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    eval("/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\nvar logging = __webpack_require__(460).log;\n\n// Expose public methods.\nmodule.exports = function() {\n  var constraintsToChrome_ = function(c) {\n    if (typeof c !== 'object' || c.mandatory || c.optional) {\n      return c;\n    }\n    var cc = {};\n    Object.keys(c).forEach(function(key) {\n      if (key === 'require' || key === 'advanced' || key === 'mediaSource') {\n        return;\n      }\n      var r = (typeof c[key] === 'object') ? c[key] : {ideal: c[key]};\n      if (r.exact !== undefined && typeof r.exact === 'number') {\n        r.min = r.max = r.exact;\n      }\n      var oldname_ = function(prefix, name) {\n        if (prefix) {\n          return prefix + name.charAt(0).toUpperCase() + name.slice(1);\n        }\n        return (name === 'deviceId') ? 'sourceId' : name;\n      };\n      if (r.ideal !== undefined) {\n        cc.optional = cc.optional || [];\n        var oc = {};\n        if (typeof r.ideal === 'number') {\n          oc[oldname_('min', key)] = r.ideal;\n          cc.optional.push(oc);\n          oc = {};\n          oc[oldname_('max', key)] = r.ideal;\n          cc.optional.push(oc);\n        } else {\n          oc[oldname_('', key)] = r.ideal;\n          cc.optional.push(oc);\n        }\n      }\n      if (r.exact !== undefined && typeof r.exact !== 'number') {\n        cc.mandatory = cc.mandatory || {};\n        cc.mandatory[oldname_('', key)] = r.exact;\n      } else {\n        ['min', 'max'].forEach(function(mix) {\n          if (r[mix] !== undefined) {\n            cc.mandatory = cc.mandatory || {};\n            cc.mandatory[oldname_(mix, key)] = r[mix];\n          }\n        });\n      }\n    });\n    if (c.advanced) {\n      cc.optional = (cc.optional || []).concat(c.advanced);\n    }\n    return cc;\n  };\n\n  var shimConstraints_ = function(constraints, func) {\n    constraints = JSON.parse(JSON.stringify(constraints));\n    if (constraints && constraints.audio) {\n      constraints.audio = constraintsToChrome_(constraints.audio);\n    }\n    if (constraints && typeof constraints.video === 'object') {\n      // Shim facingMode for mobile, where it defaults to \"user\".\n      var face = constraints.video.facingMode;\n      face = face && ((typeof face === 'object') ? face : {ideal: face});\n\n      if ((face && (face.exact === 'user' || face.exact === 'environment' ||\n                    face.ideal === 'user' || face.ideal === 'environment')) &&\n          !(navigator.mediaDevices.getSupportedConstraints &&\n            navigator.mediaDevices.getSupportedConstraints().facingMode)) {\n        delete constraints.video.facingMode;\n        if (face.exact === 'environment' || face.ideal === 'environment') {\n          // Look for \"back\" in label, or use last cam (typically back cam).\n          return navigator.mediaDevices.enumerateDevices()\n          .then(function(devices) {\n            devices = devices.filter(function(d) {\n              return d.kind === 'videoinput';\n            });\n            var back = devices.find(function(d) {\n              return d.label.toLowerCase().indexOf('back') !== -1;\n            }) || (devices.length && devices[devices.length - 1]);\n            if (back) {\n              constraints.video.deviceId = face.exact ? {exact: back.deviceId} :\n                                                        {ideal: back.deviceId};\n            }\n            constraints.video = constraintsToChrome_(constraints.video);\n            logging('chrome: ' + JSON.stringify(constraints));\n            return func(constraints);\n          });\n        }\n      }\n      constraints.video = constraintsToChrome_(constraints.video);\n    }\n    logging('chrome: ' + JSON.stringify(constraints));\n    return func(constraints);\n  };\n\n  var shimError_ = function(e) {\n    return {\n      name: {\n        PermissionDeniedError: 'NotAllowedError',\n        ConstraintNotSatisfiedError: 'OverconstrainedError'\n      }[e.name] || e.name,\n      message: e.message,\n      constraint: e.constraintName,\n      toString: function() {\n        return this.name + (this.message && ': ') + this.message;\n      }\n    };\n  };\n\n  var getUserMedia_ = function(constraints, onSuccess, onError) {\n    shimConstraints_(constraints, function(c) {\n      navigator.webkitGetUserMedia(c, onSuccess, function(e) {\n        onError(shimError_(e));\n      });\n    });\n  };\n\n  navigator.getUserMedia = getUserMedia_;\n\n  // Returns the result of getUserMedia as a Promise.\n  var getUserMediaPromise_ = function(constraints) {\n    return new Promise(function(resolve, reject) {\n      navigator.getUserMedia(constraints, resolve, reject);\n    });\n  };\n\n  if (!navigator.mediaDevices) {\n    navigator.mediaDevices = {\n      getUserMedia: getUserMediaPromise_,\n      enumerateDevices: function() {\n        return new Promise(function(resolve) {\n          var kinds = {audio: 'audioinput', video: 'videoinput'};\n          return MediaStreamTrack.getSources(function(devices) {\n            resolve(devices.map(function(device) {\n              return {label: device.label,\n                      kind: kinds[device.kind],\n                      deviceId: device.id,\n                      groupId: ''};\n            }));\n          });\n        });\n      }\n    };\n  }\n\n  // A shim for getUserMedia method on the mediaDevices object.\n  // TODO(KaptenJansson) remove once implemented in Chrome stable.\n  if (!navigator.mediaDevices.getUserMedia) {\n    navigator.mediaDevices.getUserMedia = function(constraints) {\n      return getUserMediaPromise_(constraints);\n    };\n  } else {\n    // Even though Chrome 45 has navigator.mediaDevices and a getUserMedia\n    // function which returns a Promise, it does not accept spec-style\n    // constraints.\n    var origGetUserMedia = navigator.mediaDevices.getUserMedia.\n        bind(navigator.mediaDevices);\n    navigator.mediaDevices.getUserMedia = function(cs) {\n      return shimConstraints_(cs, function(c) {\n        return origGetUserMedia(c).then(function(stream) {\n          if (c.audio && !stream.getAudioTracks().length ||\n              c.video && !stream.getVideoTracks().length) {\n            stream.getTracks().forEach(function(track) {\n              track.stop();\n            });\n            throw new DOMException('', 'NotFoundError');\n          }\n          return stream;\n        }, function(e) {\n          return Promise.reject(shimError_(e));\n        });\n      });\n    };\n  }\n\n  // Dummy devicechange event methods.\n  // TODO(KaptenJansson) remove once implemented in Chrome stable.\n  if (typeof navigator.mediaDevices.addEventListener === 'undefined') {\n    navigator.mediaDevices.addEventListener = function() {\n      logging('Dummy mediaDevices.addEventListener called.');\n    };\n  }\n  if (typeof navigator.mediaDevices.removeEventListener === 'undefined') {\n    navigator.mediaDevices.removeEventListener = function() {\n      logging('Dummy mediaDevices.removeEventListener called.');\n    };\n  }\n};\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"462.js","sources":["/home/ubuntu/workspace/node_modules/webrtc-adapter/src/js/chrome/getusermedia.js"],"sourcesContent":["/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\nvar logging = require('../utils.js').log;\n\n// Expose public methods.\nmodule.exports = function() {\n  var constraintsToChrome_ = function(c) {\n    if (typeof c !== 'object' || c.mandatory || c.optional) {\n      return c;\n    }\n    var cc = {};\n    Object.keys(c).forEach(function(key) {\n      if (key === 'require' || key === 'advanced' || key === 'mediaSource') {\n        return;\n      }\n      var r = (typeof c[key] === 'object') ? c[key] : {ideal: c[key]};\n      if (r.exact !== undefined && typeof r.exact === 'number') {\n        r.min = r.max = r.exact;\n      }\n      var oldname_ = function(prefix, name) {\n        if (prefix) {\n          return prefix + name.charAt(0).toUpperCase() + name.slice(1);\n        }\n        return (name === 'deviceId') ? 'sourceId' : name;\n      };\n      if (r.ideal !== undefined) {\n        cc.optional = cc.optional || [];\n        var oc = {};\n        if (typeof r.ideal === 'number') {\n          oc[oldname_('min', key)] = r.ideal;\n          cc.optional.push(oc);\n          oc = {};\n          oc[oldname_('max', key)] = r.ideal;\n          cc.optional.push(oc);\n        } else {\n          oc[oldname_('', key)] = r.ideal;\n          cc.optional.push(oc);\n        }\n      }\n      if (r.exact !== undefined && typeof r.exact !== 'number') {\n        cc.mandatory = cc.mandatory || {};\n        cc.mandatory[oldname_('', key)] = r.exact;\n      } else {\n        ['min', 'max'].forEach(function(mix) {\n          if (r[mix] !== undefined) {\n            cc.mandatory = cc.mandatory || {};\n            cc.mandatory[oldname_(mix, key)] = r[mix];\n          }\n        });\n      }\n    });\n    if (c.advanced) {\n      cc.optional = (cc.optional || []).concat(c.advanced);\n    }\n    return cc;\n  };\n\n  var shimConstraints_ = function(constraints, func) {\n    constraints = JSON.parse(JSON.stringify(constraints));\n    if (constraints && constraints.audio) {\n      constraints.audio = constraintsToChrome_(constraints.audio);\n    }\n    if (constraints && typeof constraints.video === 'object') {\n      // Shim facingMode for mobile, where it defaults to \"user\".\n      var face = constraints.video.facingMode;\n      face = face && ((typeof face === 'object') ? face : {ideal: face});\n\n      if ((face && (face.exact === 'user' || face.exact === 'environment' ||\n                    face.ideal === 'user' || face.ideal === 'environment')) &&\n          !(navigator.mediaDevices.getSupportedConstraints &&\n            navigator.mediaDevices.getSupportedConstraints().facingMode)) {\n        delete constraints.video.facingMode;\n        if (face.exact === 'environment' || face.ideal === 'environment') {\n          // Look for \"back\" in label, or use last cam (typically back cam).\n          return navigator.mediaDevices.enumerateDevices()\n          .then(function(devices) {\n            devices = devices.filter(function(d) {\n              return d.kind === 'videoinput';\n            });\n            var back = devices.find(function(d) {\n              return d.label.toLowerCase().indexOf('back') !== -1;\n            }) || (devices.length && devices[devices.length - 1]);\n            if (back) {\n              constraints.video.deviceId = face.exact ? {exact: back.deviceId} :\n                                                        {ideal: back.deviceId};\n            }\n            constraints.video = constraintsToChrome_(constraints.video);\n            logging('chrome: ' + JSON.stringify(constraints));\n            return func(constraints);\n          });\n        }\n      }\n      constraints.video = constraintsToChrome_(constraints.video);\n    }\n    logging('chrome: ' + JSON.stringify(constraints));\n    return func(constraints);\n  };\n\n  var shimError_ = function(e) {\n    return {\n      name: {\n        PermissionDeniedError: 'NotAllowedError',\n        ConstraintNotSatisfiedError: 'OverconstrainedError'\n      }[e.name] || e.name,\n      message: e.message,\n      constraint: e.constraintName,\n      toString: function() {\n        return this.name + (this.message && ': ') + this.message;\n      }\n    };\n  };\n\n  var getUserMedia_ = function(constraints, onSuccess, onError) {\n    shimConstraints_(constraints, function(c) {\n      navigator.webkitGetUserMedia(c, onSuccess, function(e) {\n        onError(shimError_(e));\n      });\n    });\n  };\n\n  navigator.getUserMedia = getUserMedia_;\n\n  // Returns the result of getUserMedia as a Promise.\n  var getUserMediaPromise_ = function(constraints) {\n    return new Promise(function(resolve, reject) {\n      navigator.getUserMedia(constraints, resolve, reject);\n    });\n  };\n\n  if (!navigator.mediaDevices) {\n    navigator.mediaDevices = {\n      getUserMedia: getUserMediaPromise_,\n      enumerateDevices: function() {\n        return new Promise(function(resolve) {\n          var kinds = {audio: 'audioinput', video: 'videoinput'};\n          return MediaStreamTrack.getSources(function(devices) {\n            resolve(devices.map(function(device) {\n              return {label: device.label,\n                      kind: kinds[device.kind],\n                      deviceId: device.id,\n                      groupId: ''};\n            }));\n          });\n        });\n      }\n    };\n  }\n\n  // A shim for getUserMedia method on the mediaDevices object.\n  // TODO(KaptenJansson) remove once implemented in Chrome stable.\n  if (!navigator.mediaDevices.getUserMedia) {\n    navigator.mediaDevices.getUserMedia = function(constraints) {\n      return getUserMediaPromise_(constraints);\n    };\n  } else {\n    // Even though Chrome 45 has navigator.mediaDevices and a getUserMedia\n    // function which returns a Promise, it does not accept spec-style\n    // constraints.\n    var origGetUserMedia = navigator.mediaDevices.getUserMedia.\n        bind(navigator.mediaDevices);\n    navigator.mediaDevices.getUserMedia = function(cs) {\n      return shimConstraints_(cs, function(c) {\n        return origGetUserMedia(c).then(function(stream) {\n          if (c.audio && !stream.getAudioTracks().length ||\n              c.video && !stream.getVideoTracks().length) {\n            stream.getTracks().forEach(function(track) {\n              track.stop();\n            });\n            throw new DOMException('', 'NotFoundError');\n          }\n          return stream;\n        }, function(e) {\n          return Promise.reject(shimError_(e));\n        });\n      });\n    };\n  }\n\n  // Dummy devicechange event methods.\n  // TODO(KaptenJansson) remove once implemented in Chrome stable.\n  if (typeof navigator.mediaDevices.addEventListener === 'undefined') {\n    navigator.mediaDevices.addEventListener = function() {\n      logging('Dummy mediaDevices.addEventListener called.');\n    };\n  }\n  if (typeof navigator.mediaDevices.removeEventListener === 'undefined') {\n    navigator.mediaDevices.removeEventListener = function() {\n      logging('Dummy mediaDevices.removeEventListener called.');\n    };\n  }\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/webrtc-adapter/src/js/chrome/getusermedia.js\n// module id = 462\n// module chunks = 0"],"mappings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sourceRoot":""}");
Severity: Minor
Found in app/assets/javascripts/metamaps.secret.bundle.js by fixme

TODO found
Open

    // TODO: make these dynamic values so that the ContextMenu can
Severity: Minor
Found in frontend/src/components/ContextMenu.js by fixme

TODO found
Open

    eval("/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n/* global hasOwnProperty:true */\n\n'use strict';\n\nvar _prodInvariant = __webpack_require__(208),\n    _assign = __webpack_require__(176);\n\nvar AutoFocusUtils = __webpack_require__(266);\nvar CSSPropertyOperations = __webpack_require__(268);\nvar DOMLazyTree = __webpack_require__(254);\nvar DOMNamespaces = __webpack_require__(255);\nvar DOMProperty = __webpack_require__(209);\nvar DOMPropertyOperations = __webpack_require__(276);\nvar EventPluginHub = __webpack_require__(215);\nvar EventPluginRegistry = __webpack_require__(216);\nvar ReactBrowserEventEmitter = __webpack_require__(278);\nvar ReactDOMComponentFlags = __webpack_require__(210);\nvar ReactDOMComponentTree = __webpack_require__(207);\nvar ReactDOMInput = __webpack_require__(281);\nvar ReactDOMOption = __webpack_require__(284);\nvar ReactDOMSelect = __webpack_require__(285);\nvar ReactDOMTextarea = __webpack_require__(286);\nvar ReactInstrumentation = __webpack_require__(235);\nvar ReactMultiChild = __webpack_require__(287);\nvar ReactServerRenderingTransaction = __webpack_require__(306);\n\nvar emptyFunction = __webpack_require__(184);\nvar escapeTextContentForBrowser = __webpack_require__(259);\nvar invariant = __webpack_require__(180);\nvar isEventSupported = __webpack_require__(243);\nvar shallowEqual = __webpack_require__(296);\nvar validateDOMNesting = __webpack_require__(309);\nvar warning = __webpack_require__(183);\n\nvar Flags = ReactDOMComponentFlags;\nvar deleteListener = EventPluginHub.deleteListener;\nvar getNode = ReactDOMComponentTree.getNodeFromInstance;\nvar listenTo = ReactBrowserEventEmitter.listenTo;\nvar registrationNameModules = EventPluginRegistry.registrationNameModules;\n\n// For quickly matching children type, to test if can be treated as content.\nvar CONTENT_TYPES = { 'string': true, 'number': true };\n\nvar STYLE = 'style';\nvar HTML = '__html';\nvar RESERVED_PROPS = {\n  children: null,\n  dangerouslySetInnerHTML: null,\n  suppressContentEditableWarning: null\n};\n\n// Node type for document fragments (Node.DOCUMENT_FRAGMENT_NODE).\nvar DOC_FRAGMENT_TYPE = 11;\n\nfunction getDeclarationErrorAddendum(internalInstance) {\n  if (internalInstance) {\n    var owner = internalInstance._currentElement._owner || null;\n    if (owner) {\n      var name = owner.getName();\n      if (name) {\n        return ' This DOM node was rendered by `' + name + '`.';\n      }\n    }\n  }\n  return '';\n}\n\nfunction friendlyStringify(obj) {\n  if (typeof obj === 'object') {\n    if (Array.isArray(obj)) {\n      return '[' + obj.map(friendlyStringify).join(', ') + ']';\n    } else {\n      var pairs = [];\n      for (var key in obj) {\n        if (Object.prototype.hasOwnProperty.call(obj, key)) {\n          var keyEscaped = /^[a-z$_][\\w$_]*$/i.test(key) ? key : JSON.stringify(key);\n          pairs.push(keyEscaped + ': ' + friendlyStringify(obj[key]));\n        }\n      }\n      return '{' + pairs.join(', ') + '}';\n    }\n  } else if (typeof obj === 'string') {\n    return JSON.stringify(obj);\n  } else if (typeof obj === 'function') {\n    return '[function object]';\n  }\n  // Differs from JSON.stringify in that undefined because undefined and that\n  // inf and nan don't become null\n  return String(obj);\n}\n\nvar styleMutationWarning = {};\n\nfunction checkAndWarnForMutatedStyle(style1, style2, component) {\n  if (style1 == null || style2 == null) {\n    return;\n  }\n  if (shallowEqual(style1, style2)) {\n    return;\n  }\n\n  var componentName = component._tag;\n  var owner = component._currentElement._owner;\n  var ownerName;\n  if (owner) {\n    ownerName = owner.getName();\n  }\n\n  var hash = ownerName + '|' + componentName;\n\n  if (styleMutationWarning.hasOwnProperty(hash)) {\n    return;\n  }\n\n  styleMutationWarning[hash] = true;\n\n   true ? warning(false, '`%s` was passed a style object that has previously been mutated. ' + 'Mutating `style` is deprecated. Consider cloning it beforehand. Check ' + 'the `render` %s. Previous style: %s. Mutated style: %s.', componentName, owner ? 'of `' + ownerName + '`' : 'using <' + componentName + '>', friendlyStringify(style1), friendlyStringify(style2)) : void 0;\n}\n\n/**\n * @param {object} component\n * @param {?object} props\n */\nfunction assertValidProps(component, props) {\n  if (!props) {\n    return;\n  }\n  // Note the use of `==` which checks for null or undefined.\n  if (voidElementTags[component._tag]) {\n    !(props.children == null && props.dangerouslySetInnerHTML == null) ?  true ? invariant(false, '%s is a void element tag and must neither have `children` nor use `dangerouslySetInnerHTML`.%s', component._tag, component._currentElement._owner ? ' Check the render method of ' + component._currentElement._owner.getName() + '.' : '') : _prodInvariant('137', component._tag, component._currentElement._owner ? ' Check the render method of ' + component._currentElement._owner.getName() + '.' : '') : void 0;\n  }\n  if (props.dangerouslySetInnerHTML != null) {\n    !(props.children == null) ?  true ? invariant(false, 'Can only set one of `children` or `props.dangerouslySetInnerHTML`.') : _prodInvariant('60') : void 0;\n    !(typeof props.dangerouslySetInnerHTML === 'object' && HTML in props.dangerouslySetInnerHTML) ?  true ? invariant(false, '`props.dangerouslySetInnerHTML` must be in the form `{__html: ...}`. Please visit https://fb.me/react-invariant-dangerously-set-inner-html for more information.') : _prodInvariant('61') : void 0;\n  }\n  if (true) {\n     true ? warning(props.innerHTML == null, 'Directly setting property `innerHTML` is not permitted. ' + 'For more information, lookup documentation on `dangerouslySetInnerHTML`.') : void 0;\n     true ? warning(props.suppressContentEditableWarning || !props.contentEditable || props.children == null, 'A component is `contentEditable` and contains `children` managed by ' + 'React. It is now your responsibility to guarantee that none of ' + 'those nodes are unexpectedly modified or duplicated. This is ' + 'probably not intentional.') : void 0;\n     true ? warning(props.onFocusIn == null && props.onFocusOut == null, 'React uses onFocus and onBlur instead of onFocusIn and onFocusOut. ' + 'All React events are normalized to bubble, so onFocusIn and onFocusOut ' + 'are not needed/supported by React.') : void 0;\n  }\n  !(props.style == null || typeof props.style === 'object') ?  true ? invariant(false, 'The `style` prop expects a mapping from style properties to values, not a string. For example, style={{marginRight: spacing + \\'em\\'}} when using JSX.%s', getDeclarationErrorAddendum(component)) : _prodInvariant('62', getDeclarationErrorAddendum(component)) : void 0;\n}\n\nfunction enqueuePutListener(inst, registrationName, listener, transaction) {\n  if (transaction instanceof ReactServerRenderingTransaction) {\n    return;\n  }\n  if (true) {\n    // IE8 has no API for event capturing and the `onScroll` event doesn't\n    // bubble.\n     true ? warning(registrationName !== 'onScroll' || isEventSupported('scroll', true), 'This browser doesn\\'t support the `onScroll` event') : void 0;\n  }\n  var containerInfo = inst._hostContainerInfo;\n  var isDocumentFragment = containerInfo._node && containerInfo._node.nodeType === DOC_FRAGMENT_TYPE;\n  var doc = isDocumentFragment ? containerInfo._node : containerInfo._ownerDocument;\n  listenTo(registrationName, doc);\n  transaction.getReactMountReady().enqueue(putListener, {\n    inst: inst,\n    registrationName: registrationName,\n    listener: listener\n  });\n}\n\nfunction putListener() {\n  var listenerToPut = this;\n  EventPluginHub.putListener(listenerToPut.inst, listenerToPut.registrationName, listenerToPut.listener);\n}\n\nfunction inputPostMount() {\n  var inst = this;\n  ReactDOMInput.postMountWrapper(inst);\n}\n\nfunction textareaPostMount() {\n  var inst = this;\n  ReactDOMTextarea.postMountWrapper(inst);\n}\n\nfunction optionPostMount() {\n  var inst = this;\n  ReactDOMOption.postMountWrapper(inst);\n}\n\nvar setAndValidateContentChildDev = emptyFunction;\nif (true) {\n  setAndValidateContentChildDev = function (content) {\n    var hasExistingContent = this._contentDebugID != null;\n    var debugID = this._debugID;\n    // This ID represents the inlined child that has no backing instance:\n    var contentDebugID = -debugID;\n\n    if (content == null) {\n      if (hasExistingContent) {\n        ReactInstrumentation.debugTool.onUnmountComponent(this._contentDebugID);\n      }\n      this._contentDebugID = null;\n      return;\n    }\n\n    validateDOMNesting(null, String(content), this, this._ancestorInfo);\n    this._contentDebugID = contentDebugID;\n    if (hasExistingContent) {\n      ReactInstrumentation.debugTool.onBeforeUpdateComponent(contentDebugID, content);\n      ReactInstrumentation.debugTool.onUpdateComponent(contentDebugID);\n    } else {\n      ReactInstrumentation.debugTool.onBeforeMountComponent(contentDebugID, content, debugID);\n      ReactInstrumentation.debugTool.onMountComponent(contentDebugID);\n      ReactInstrumentation.debugTool.onSetChildren(debugID, [contentDebugID]);\n    }\n  };\n}\n\n// There are so many media events, it makes sense to just\n// maintain a list rather than create a `trapBubbledEvent` for each\nvar mediaEvents = {\n  topAbort: 'abort',\n  topCanPlay: 'canplay',\n  topCanPlayThrough: 'canplaythrough',\n  topDurationChange: 'durationchange',\n  topEmptied: 'emptied',\n  topEncrypted: 'encrypted',\n  topEnded: 'ended',\n  topError: 'error',\n  topLoadedData: 'loadeddata',\n  topLoadedMetadata: 'loadedmetadata',\n  topLoadStart: 'loadstart',\n  topPause: 'pause',\n  topPlay: 'play',\n  topPlaying: 'playing',\n  topProgress: 'progress',\n  topRateChange: 'ratechange',\n  topSeeked: 'seeked',\n  topSeeking: 'seeking',\n  topStalled: 'stalled',\n  topSuspend: 'suspend',\n  topTimeUpdate: 'timeupdate',\n  topVolumeChange: 'volumechange',\n  topWaiting: 'waiting'\n};\n\nfunction trapBubbledEventsLocal() {\n  var inst = this;\n  // If a component renders to null or if another component fatals and causes\n  // the state of the tree to be corrupted, `node` here can be null.\n  !inst._rootNodeID ?  true ? invariant(false, 'Must be mounted to trap events') : _prodInvariant('63') : void 0;\n  var node = getNode(inst);\n  !node ?  true ? invariant(false, 'trapBubbledEvent(...): Requires node to be rendered.') : _prodInvariant('64') : void 0;\n\n  switch (inst._tag) {\n    case 'iframe':\n    case 'object':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topLoad', 'load', node)];\n      break;\n    case 'video':\n    case 'audio':\n\n      inst._wrapperState.listeners = [];\n      // Create listener for each media event\n      for (var event in mediaEvents) {\n        if (mediaEvents.hasOwnProperty(event)) {\n          inst._wrapperState.listeners.push(ReactBrowserEventEmitter.trapBubbledEvent(event, mediaEvents[event], node));\n        }\n      }\n      break;\n    case 'source':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topError', 'error', node)];\n      break;\n    case 'img':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topError', 'error', node), ReactBrowserEventEmitter.trapBubbledEvent('topLoad', 'load', node)];\n      break;\n    case 'form':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topReset', 'reset', node), ReactBrowserEventEmitter.trapBubbledEvent('topSubmit', 'submit', node)];\n      break;\n    case 'input':\n    case 'select':\n    case 'textarea':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topInvalid', 'invalid', node)];\n      break;\n  }\n}\n\nfunction postUpdateSelectWrapper() {\n  ReactDOMSelect.postUpdateWrapper(this);\n}\n\n// For HTML, certain tags should omit their close tag. We keep a whitelist for\n// those special-case tags.\n\nvar omittedCloseTags = {\n  'area': true,\n  'base': true,\n  'br': true,\n  'col': true,\n  'embed': true,\n  'hr': true,\n  'img': true,\n  'input': true,\n  'keygen': true,\n  'link': true,\n  'meta': true,\n  'param': true,\n  'source': true,\n  'track': true,\n  'wbr': true\n};\n\nvar newlineEatingTags = {\n  'listing': true,\n  'pre': true,\n  'textarea': true\n};\n\n// For HTML, certain tags cannot have children. This has the same purpose as\n// `omittedCloseTags` except that `menuitem` should still have its closing tag.\n\nvar voidElementTags = _assign({\n  'menuitem': true\n}, omittedCloseTags);\n\n// We accept any tag to be rendered but since this gets injected into arbitrary\n// HTML, we want to make sure that it's a safe tag.\n// http://www.w3.org/TR/REC-xml/#NT-Name\n\nvar VALID_TAG_REGEX = /^[a-zA-Z][a-zA-Z:_\\.\\-\\d]*$/; // Simplified subset\nvar validatedTagCache = {};\nvar hasOwnProperty = {}.hasOwnProperty;\n\nfunction validateDangerousTag(tag) {\n  if (!hasOwnProperty.call(validatedTagCache, tag)) {\n    !VALID_TAG_REGEX.test(tag) ?  true ? invariant(false, 'Invalid tag: %s', tag) : _prodInvariant('65', tag) : void 0;\n    validatedTagCache[tag] = true;\n  }\n}\n\nfunction isCustomComponent(tagName, props) {\n  return tagName.indexOf('-') >= 0 || props.is != null;\n}\n\nvar globalIdCounter = 1;\n\n/**\n * Creates a new React class that is idempotent and capable of containing other\n * React components. It accepts event listeners and DOM properties that are\n * valid according to `DOMProperty`.\n *\n *  - Event listeners: `onClick`, `onMouseDown`, etc.\n *  - DOM properties: `className`, `name`, `title`, etc.\n *\n * The `style` property functions differently from the DOM API. It accepts an\n * object mapping of style properties to values.\n *\n * @constructor ReactDOMComponent\n * @extends ReactMultiChild\n */\nfunction ReactDOMComponent(element) {\n  var tag = element.type;\n  validateDangerousTag(tag);\n  this._currentElement = element;\n  this._tag = tag.toLowerCase();\n  this._namespaceURI = null;\n  this._renderedChildren = null;\n  this._previousStyle = null;\n  this._previousStyleCopy = null;\n  this._hostNode = null;\n  this._hostParent = null;\n  this._rootNodeID = 0;\n  this._domID = 0;\n  this._hostContainerInfo = null;\n  this._wrapperState = null;\n  this._topLevelWrapper = null;\n  this._flags = 0;\n  if (true) {\n    this._ancestorInfo = null;\n    setAndValidateContentChildDev.call(this, null);\n  }\n}\n\nReactDOMComponent.displayName = 'ReactDOMComponent';\n\nReactDOMComponent.Mixin = {\n\n  /**\n   * Generates root tag markup then recurses. This method has side effects and\n   * is not idempotent.\n   *\n   * @internal\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {?ReactDOMComponent} the parent component instance\n   * @param {?object} info about the host container\n   * @param {object} context\n   * @return {string} The computed markup.\n   */\n  mountComponent: function (transaction, hostParent, hostContainerInfo, context) {\n    this._rootNodeID = globalIdCounter++;\n    this._domID = hostContainerInfo._idCounter++;\n    this._hostParent = hostParent;\n    this._hostContainerInfo = hostContainerInfo;\n\n    var props = this._currentElement.props;\n\n    switch (this._tag) {\n      case 'audio':\n      case 'form':\n      case 'iframe':\n      case 'img':\n      case 'link':\n      case 'object':\n      case 'source':\n      case 'video':\n        this._wrapperState = {\n          listeners: null\n        };\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n      case 'input':\n        ReactDOMInput.mountWrapper(this, props, hostParent);\n        props = ReactDOMInput.getHostProps(this, props);\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n      case 'option':\n        ReactDOMOption.mountWrapper(this, props, hostParent);\n        props = ReactDOMOption.getHostProps(this, props);\n        break;\n      case 'select':\n        ReactDOMSelect.mountWrapper(this, props, hostParent);\n        props = ReactDOMSelect.getHostProps(this, props);\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n      case 'textarea':\n        ReactDOMTextarea.mountWrapper(this, props, hostParent);\n        props = ReactDOMTextarea.getHostProps(this, props);\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n    }\n\n    assertValidProps(this, props);\n\n    // We create tags in the namespace of their parent container, except HTML\n    // tags get no namespace.\n    var namespaceURI;\n    var parentTag;\n    if (hostParent != null) {\n      namespaceURI = hostParent._namespaceURI;\n      parentTag = hostParent._tag;\n    } else if (hostContainerInfo._tag) {\n      namespaceURI = hostContainerInfo._namespaceURI;\n      parentTag = hostContainerInfo._tag;\n    }\n    if (namespaceURI == null || namespaceURI === DOMNamespaces.svg && parentTag === 'foreignobject') {\n      namespaceURI = DOMNamespaces.html;\n    }\n    if (namespaceURI === DOMNamespaces.html) {\n      if (this._tag === 'svg') {\n        namespaceURI = DOMNamespaces.svg;\n      } else if (this._tag === 'math') {\n        namespaceURI = DOMNamespaces.mathml;\n      }\n    }\n    this._namespaceURI = namespaceURI;\n\n    if (true) {\n      var parentInfo;\n      if (hostParent != null) {\n        parentInfo = hostParent._ancestorInfo;\n      } else if (hostContainerInfo._tag) {\n        parentInfo = hostContainerInfo._ancestorInfo;\n      }\n      if (parentInfo) {\n        // parentInfo should always be present except for the top-level\n        // component when server rendering\n        validateDOMNesting(this._tag, null, this, parentInfo);\n      }\n      this._ancestorInfo = validateDOMNesting.updatedAncestorInfo(parentInfo, this._tag, this);\n    }\n\n    var mountImage;\n    if (transaction.useCreateElement) {\n      var ownerDocument = hostContainerInfo._ownerDocument;\n      var el;\n      if (namespaceURI === DOMNamespaces.html) {\n        if (this._tag === 'script') {\n          // Create the script via .innerHTML so its \"parser-inserted\" flag is\n          // set to true and it does not execute\n          var div = ownerDocument.createElement('div');\n          var type = this._currentElement.type;\n          div.innerHTML = '<' + type + '></' + type + '>';\n          el = div.removeChild(div.firstChild);\n        } else if (props.is) {\n          el = ownerDocument.createElement(this._currentElement.type, props.is);\n        } else {\n          // Separate else branch instead of using `props.is || undefined` above becuase of a Firefox bug.\n          // See discussion in https://github.com/facebook/react/pull/6896\n          // and discussion in https://bugzilla.mozilla.org/show_bug.cgi?id=1276240\n          el = ownerDocument.createElement(this._currentElement.type);\n        }\n      } else {\n        el = ownerDocument.createElementNS(namespaceURI, this._currentElement.type);\n      }\n      ReactDOMComponentTree.precacheNode(this, el);\n      this._flags |= Flags.hasCachedChildNodes;\n      if (!this._hostParent) {\n        DOMPropertyOperations.setAttributeForRoot(el);\n      }\n      this._updateDOMProperties(null, props, transaction);\n      var lazyTree = DOMLazyTree(el);\n      this._createInitialChildren(transaction, props, context, lazyTree);\n      mountImage = lazyTree;\n    } else {\n      var tagOpen = this._createOpenTagMarkupAndPutListeners(transaction, props);\n      var tagContent = this._createContentMarkup(transaction, props, context);\n      if (!tagContent && omittedCloseTags[this._tag]) {\n        mountImage = tagOpen + '/>';\n      } else {\n        mountImage = tagOpen + '>' + tagContent + '</' + this._currentElement.type + '>';\n      }\n    }\n\n    switch (this._tag) {\n      case 'input':\n        transaction.getReactMountReady().enqueue(inputPostMount, this);\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'textarea':\n        transaction.getReactMountReady().enqueue(textareaPostMount, this);\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'select':\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'button':\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'option':\n        transaction.getReactMountReady().enqueue(optionPostMount, this);\n        break;\n    }\n\n    return mountImage;\n  },\n\n  /**\n   * Creates markup for the open tag and all attributes.\n   *\n   * This method has side effects because events get registered.\n   *\n   * Iterating over object properties is faster than iterating over arrays.\n   * @see http://jsperf.com/obj-vs-arr-iteration\n   *\n   * @private\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {object} props\n   * @return {string} Markup of opening tag.\n   */\n  _createOpenTagMarkupAndPutListeners: function (transaction, props) {\n    var ret = '<' + this._currentElement.type;\n\n    for (var propKey in props) {\n      if (!props.hasOwnProperty(propKey)) {\n        continue;\n      }\n      var propValue = props[propKey];\n      if (propValue == null) {\n        continue;\n      }\n      if (registrationNameModules.hasOwnProperty(propKey)) {\n        if (propValue) {\n          enqueuePutListener(this, propKey, propValue, transaction);\n        }\n      } else {\n        if (propKey === STYLE) {\n          if (propValue) {\n            if (true) {\n              // See `_updateDOMProperties`. style block\n              this._previousStyle = propValue;\n            }\n            propValue = this._previousStyleCopy = _assign({}, props.style);\n          }\n          propValue = CSSPropertyOperations.createMarkupForStyles(propValue, this);\n        }\n        var markup = null;\n        if (this._tag != null && isCustomComponent(this._tag, props)) {\n          if (!RESERVED_PROPS.hasOwnProperty(propKey)) {\n            markup = DOMPropertyOperations.createMarkupForCustomAttribute(propKey, propValue);\n          }\n        } else {\n          markup = DOMPropertyOperations.createMarkupForProperty(propKey, propValue);\n        }\n        if (markup) {\n          ret += ' ' + markup;\n        }\n      }\n    }\n\n    // For static pages, no need to put React ID and checksum. Saves lots of\n    // bytes.\n    if (transaction.renderToStaticMarkup) {\n      return ret;\n    }\n\n    if (!this._hostParent) {\n      ret += ' ' + DOMPropertyOperations.createMarkupForRoot();\n    }\n    ret += ' ' + DOMPropertyOperations.createMarkupForID(this._domID);\n    return ret;\n  },\n\n  /**\n   * Creates markup for the content between the tags.\n   *\n   * @private\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {object} props\n   * @param {object} context\n   * @return {string} Content markup.\n   */\n  _createContentMarkup: function (transaction, props, context) {\n    var ret = '';\n\n    // Intentional use of != to avoid catching zero/false.\n    var innerHTML = props.dangerouslySetInnerHTML;\n    if (innerHTML != null) {\n      if (innerHTML.__html != null) {\n        ret = innerHTML.__html;\n      }\n    } else {\n      var contentToUse = CONTENT_TYPES[typeof props.children] ? props.children : null;\n      var childrenToUse = contentToUse != null ? null : props.children;\n      if (contentToUse != null) {\n        // TODO: Validate that text is allowed as a child of this node\n        ret = escapeTextContentForBrowser(contentToUse);\n        if (true) {\n          setAndValidateContentChildDev.call(this, contentToUse);\n        }\n      } else if (childrenToUse != null) {\n        var mountImages = this.mountChildren(childrenToUse, transaction, context);\n        ret = mountImages.join('');\n      }\n    }\n    if (newlineEatingTags[this._tag] && ret.charAt(0) === '\\n') {\n      // text/html ignores the first character in these tags if it's a newline\n      // Prefer to break application/xml over text/html (for now) by adding\n      // a newline specifically to get eaten by the parser. (Alternately for\n      // textareas, replacing \"^\\n\" with \"\\r\\n\" doesn't get eaten, and the first\n      // \\r is normalized out by HTMLTextAreaElement#value.)\n      // See: <http://www.w3.org/TR/html-polyglot/#newlines-in-textarea-and-pre>\n      // See: <http://www.w3.org/TR/html5/syntax.html#element-restrictions>\n      // See: <http://www.w3.org/TR/html5/syntax.html#newlines>\n      // See: Parsing of \"textarea\" \"listing\" and \"pre\" elements\n      //  from <http://www.w3.org/TR/html5/syntax.html#parsing-main-inbody>\n      return '\\n' + ret;\n    } else {\n      return ret;\n    }\n  },\n\n  _createInitialChildren: function (transaction, props, context, lazyTree) {\n    // Intentional use of != to avoid catching zero/false.\n    var innerHTML = props.dangerouslySetInnerHTML;\n    if (innerHTML != null) {\n      if (innerHTML.__html != null) {\n        DOMLazyTree.queueHTML(lazyTree, innerHTML.__html);\n      }\n    } else {\n      var contentToUse = CONTENT_TYPES[typeof props.children] ? props.children : null;\n      var childrenToUse = contentToUse != null ? null : props.children;\n      // TODO: Validate that text is allowed as a child of this node\n      if (contentToUse != null) {\n        // Avoid setting textContent when the text is empty. In IE11 setting\n        // textContent on a text area will cause the placeholder to not\n        // show within the textarea until it has been focused and blurred again.\n        // https://github.com/facebook/react/issues/6731#issuecomment-254874553\n        if (contentToUse !== '') {\n          if (true) {\n            setAndValidateContentChildDev.call(this, contentToUse);\n          }\n          DOMLazyTree.queueText(lazyTree, contentToUse);\n        }\n      } else if (childrenToUse != null) {\n        var mountImages = this.mountChildren(childrenToUse, transaction, context);\n        for (var i = 0; i < mountImages.length; i++) {\n          DOMLazyTree.queueChild(lazyTree, mountImages[i]);\n        }\n      }\n    }\n  },\n\n  /**\n   * Receives a next element and updates the component.\n   *\n   * @internal\n   * @param {ReactElement} nextElement\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {object} context\n   */\n  receiveComponent: function (nextElement, transaction, context) {\n    var prevElement = this._currentElement;\n    this._currentElement = nextElement;\n    this.updateComponent(transaction, prevElement, nextElement, context);\n  },\n\n  /**\n   * Updates a DOM component after it has already been allocated and\n   * attached to the DOM. Reconciles the root DOM node, then recurses.\n   *\n   * @param {ReactReconcileTransaction} transaction\n   * @param {ReactElement} prevElement\n   * @param {ReactElement} nextElement\n   * @internal\n   * @overridable\n   */\n  updateComponent: function (transaction, prevElement, nextElement, context) {\n    var lastProps = prevElement.props;\n    var nextProps = this._currentElement.props;\n\n    switch (this._tag) {\n      case 'input':\n        lastProps = ReactDOMInput.getHostProps(this, lastProps);\n        nextProps = ReactDOMInput.getHostProps(this, nextProps);\n        break;\n      case 'option':\n        lastProps = ReactDOMOption.getHostProps(this, lastProps);\n        nextProps = ReactDOMOption.getHostProps(this, nextProps);\n        break;\n      case 'select':\n        lastProps = ReactDOMSelect.getHostProps(this, lastProps);\n        nextProps = ReactDOMSelect.getHostProps(this, nextProps);\n        break;\n      case 'textarea':\n        lastProps = ReactDOMTextarea.getHostProps(this, lastProps);\n        nextProps = ReactDOMTextarea.getHostProps(this, nextProps);\n        break;\n    }\n\n    assertValidProps(this, nextProps);\n    this._updateDOMProperties(lastProps, nextProps, transaction);\n    this._updateDOMChildren(lastProps, nextProps, transaction, context);\n\n    switch (this._tag) {\n      case 'input':\n        // Update the wrapper around inputs *after* updating props. This has to\n        // happen after `_updateDOMProperties`. Otherwise HTML5 input validations\n        // raise warnings and prevent the new value from being assigned.\n        ReactDOMInput.updateWrapper(this);\n        break;\n      case 'textarea':\n        ReactDOMTextarea.updateWrapper(this);\n        break;\n      case 'select':\n        // <select> value update needs to occur after <option> children\n        // reconciliation\n        transaction.getReactMountReady().enqueue(postUpdateSelectWrapper, this);\n        break;\n    }\n  },\n\n  /**\n   * Reconciles the properties by detecting differences in property values and\n   * updating the DOM as necessary. This function is probably the single most\n   * critical path for performance optimization.\n   *\n   * TODO: Benchmark whether checking for changed values in memory actually\n   *       improves performance (especially statically positioned elements).\n   * TODO: Benchmark the effects of putting this at the top since 99% of props\n   *       do not change for a given reconciliation.\n   * TODO: Benchmark areas that can be improved with caching.\n   *\n   * @private\n   * @param {object} lastProps\n   * @param {object} nextProps\n   * @param {?DOMElement} node\n   */\n  _updateDOMProperties: function (lastProps, nextProps, transaction) {\n    var propKey;\n    var styleName;\n    var styleUpdates;\n    for (propKey in lastProps) {\n      if (nextProps.hasOwnProperty(propKey) || !lastProps.hasOwnProperty(propKey) || lastProps[propKey] == null) {\n        continue;\n      }\n      if (propKey === STYLE) {\n        var lastStyle = this._previousStyleCopy;\n        for (styleName in lastStyle) {\n          if (lastStyle.hasOwnProperty(styleName)) {\n            styleUpdates = styleUpdates || {};\n            styleUpdates[styleName] = '';\n          }\n        }\n        this._previousStyleCopy = null;\n      } else if (registrationNameModules.hasOwnProperty(propKey)) {\n        if (lastProps[propKey]) {\n          // Only call deleteListener if there was a listener previously or\n          // else willDeleteListener gets called when there wasn't actually a\n          // listener (e.g., onClick={null})\n          deleteListener(this, propKey);\n        }\n      } else if (isCustomComponent(this._tag, lastProps)) {\n        if (!RESERVED_PROPS.hasOwnProperty(propKey)) {\n          DOMPropertyOperations.deleteValueForAttribute(getNode(this), propKey);\n        }\n      } else if (DOMProperty.properties[propKey] || DOMProperty.isCustomAttribute(propKey)) {\n        DOMPropertyOperations.deleteValueForProperty(getNode(this), propKey);\n      }\n    }\n    for (propKey in nextProps) {\n      var nextProp = nextProps[propKey];\n      var lastProp = propKey === STYLE ? this._previousStyleCopy : lastProps != null ? lastProps[propKey] : undefined;\n      if (!nextProps.hasOwnProperty(propKey) || nextProp === lastProp || nextProp == null && lastProp == null) {\n        continue;\n      }\n      if (propKey === STYLE) {\n        if (nextProp) {\n          if (true) {\n            checkAndWarnForMutatedStyle(this._previousStyleCopy, this._previousStyle, this);\n            this._previousStyle = nextProp;\n          }\n          nextProp = this._previousStyleCopy = _assign({}, nextProp);\n        } else {\n          this._previousStyleCopy = null;\n        }\n        if (lastProp) {\n          // Unset styles on `lastProp` but not on `nextProp`.\n          for (styleName in lastProp) {\n            if (lastProp.hasOwnProperty(styleName) && (!nextProp || !nextProp.hasOwnProperty(styleName))) {\n              styleUpdates = styleUpdates || {};\n              styleUpdates[styleName] = '';\n            }\n          }\n          // Update styles that changed since `lastProp`.\n          for (styleName in nextProp) {\n            if (nextProp.hasOwnProperty(styleName) && lastProp[styleName] !== nextProp[styleName]) {\n              styleUpdates = styleUpdates || {};\n              styleUpdates[styleName] = nextProp[styleName];\n            }\n          }\n        } else {\n          // Relies on `updateStylesByID` not mutating `styleUpdates`.\n          styleUpdates = nextProp;\n        }\n      } else if (registrationNameModules.hasOwnProperty(propKey)) {\n        if (nextProp) {\n          enqueuePutListener(this, propKey, nextProp, transaction);\n        } else if (lastProp) {\n          deleteListener(this, propKey);\n        }\n      } else if (isCustomComponent(this._tag, nextProps)) {\n        if (!RESERVED_PROPS.hasOwnProperty(propKey)) {\n          DOMPropertyOperations.setValueForAttribute(getNode(this), propKey, nextProp);\n        }\n      } else if (DOMProperty.properties[propKey] || DOMProperty.isCustomAttribute(propKey)) {\n        var node = getNode(this);\n        // If we're updating to null or undefined, we should remove the property\n        // from the DOM node instead of inadvertently setting to a string. This\n        // brings us in line with the same behavior we have on initial render.\n        if (nextProp != null) {\n          DOMPropertyOperations.setValueForProperty(node, propKey, nextProp);\n        } else {\n          DOMPropertyOperations.deleteValueForProperty(node, propKey);\n        }\n      }\n    }\n    if (styleUpdates) {\n      CSSPropertyOperations.setValueForStyles(getNode(this), styleUpdates, this);\n    }\n  },\n\n  /**\n   * Reconciles the children with the various properties that affect the\n   * children content.\n   *\n   * @param {object} lastProps\n   * @param {object} nextProps\n   * @param {ReactReconcileTransaction} transaction\n   * @param {object} context\n   */\n  _updateDOMChildren: function (lastProps, nextProps, transaction, context) {\n    var lastContent = CONTENT_TYPES[typeof lastProps.children] ? lastProps.children : null;\n    var nextContent = CONTENT_TYPES[typeof nextProps.children] ? nextProps.children : null;\n\n    var lastHtml = lastProps.dangerouslySetInnerHTML && lastProps.dangerouslySetInnerHTML.__html;\n    var nextHtml = nextProps.dangerouslySetInnerHTML && nextProps.dangerouslySetInnerHTML.__html;\n\n    // Note the use of `!=` which checks for null or undefined.\n    var lastChildren = lastContent != null ? null : lastProps.children;\n    var nextChildren = nextContent != null ? null : nextProps.children;\n\n    // If we're switching from children to content/html or vice versa, remove\n    // the old content\n    var lastHasContentOrHtml = lastContent != null || lastHtml != null;\n    var nextHasContentOrHtml = nextContent != null || nextHtml != null;\n    if (lastChildren != null && nextChildren == null) {\n      this.updateChildren(null, transaction, context);\n    } else if (lastHasContentOrHtml && !nextHasContentOrHtml) {\n      this.updateTextContent('');\n      if (true) {\n        ReactInstrumentation.debugTool.onSetChildren(this._debugID, []);\n      }\n    }\n\n    if (nextContent != null) {\n      if (lastContent !== nextContent) {\n        this.updateTextContent('' + nextContent);\n        if (true) {\n          setAndValidateContentChildDev.call(this, nextContent);\n        }\n      }\n    } else if (nextHtml != null) {\n      if (lastHtml !== nextHtml) {\n        this.updateMarkup('' + nextHtml);\n      }\n      if (true) {\n        ReactInstrumentation.debugTool.onSetChildren(this._debugID, []);\n      }\n    } else if (nextChildren != null) {\n      if (true) {\n        setAndValidateContentChildDev.call(this, null);\n      }\n\n      this.updateChildren(nextChildren, transaction, context);\n    }\n  },\n\n  getHostNode: function () {\n    return getNode(this);\n  },\n\n  /**\n   * Destroys all event registrations for this instance. Does not remove from\n   * the DOM. That must be done by the parent.\n   *\n   * @internal\n   */\n  unmountComponent: function (safely) {\n    switch (this._tag) {\n      case 'audio':\n      case 'form':\n      case 'iframe':\n      case 'img':\n      case 'link':\n      case 'object':\n      case 'source':\n      case 'video':\n        var listeners = this._wrapperState.listeners;\n        if (listeners) {\n          for (var i = 0; i < listeners.length; i++) {\n            listeners[i].remove();\n          }\n        }\n        break;\n      case 'html':\n      case 'head':\n      case 'body':\n        /**\n         * Components like <html> <head> and <body> can't be removed or added\n         * easily in a cross-browser way, however it's valuable to be able to\n         * take advantage of React's reconciliation for styling and <title>\n         * management. So we just document it and throw in dangerous cases.\n         */\n         true ?  true ? invariant(false, '<%s> tried to unmount. Because of cross-browser quirks it is impossible to unmount some top-level components (eg <html>, <head>, and <body>) reliably and efficiently. To fix this, have a single top-level component that never unmounts render these elements.', this._tag) : _prodInvariant('66', this._tag) : void 0;\n        break;\n    }\n\n    this.unmountChildren(safely);\n    ReactDOMComponentTree.uncacheNode(this);\n    EventPluginHub.deleteAllListeners(this);\n    this._rootNodeID = 0;\n    this._domID = 0;\n    this._wrapperState = null;\n\n    if (true) {\n      setAndValidateContentChildDev.call(this, null);\n    }\n  },\n\n  getPublicInstance: function () {\n    return getNode(this);\n  }\n\n};\n\n_assign(ReactDOMComponent.prototype, ReactDOMComponent.Mixin, ReactMultiChild.Mixin);\n\nmodule.exports = ReactDOMComponent;//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"265.js","sources":["/home/ubuntu/workspace/node_modules/react-dom/lib/ReactDOMComponent.js"],"sourcesContent":["/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n/* global hasOwnProperty:true */\n\n'use strict';\n\nvar _prodInvariant = require('./reactProdInvariant'),\n    _assign = require('object-assign');\n\nvar AutoFocusUtils = require('./AutoFocusUtils');\nvar CSSPropertyOperations = require('./CSSPropertyOperations');\nvar DOMLazyTree = require('./DOMLazyTree');\nvar DOMNamespaces = require('./DOMNamespaces');\nvar DOMProperty = require('./DOMProperty');\nvar DOMPropertyOperations = require('./DOMPropertyOperations');\nvar EventPluginHub = require('./EventPluginHub');\nvar EventPluginRegistry = require('./EventPluginRegistry');\nvar ReactBrowserEventEmitter = require('./ReactBrowserEventEmitter');\nvar ReactDOMComponentFlags = require('./ReactDOMComponentFlags');\nvar ReactDOMComponentTree = require('./ReactDOMComponentTree');\nvar ReactDOMInput = require('./ReactDOMInput');\nvar ReactDOMOption = require('./ReactDOMOption');\nvar ReactDOMSelect = require('./ReactDOMSelect');\nvar ReactDOMTextarea = require('./ReactDOMTextarea');\nvar ReactInstrumentation = require('./ReactInstrumentation');\nvar ReactMultiChild = require('./ReactMultiChild');\nvar ReactServerRenderingTransaction = require('./ReactServerRenderingTransaction');\n\nvar emptyFunction = require('fbjs/lib/emptyFunction');\nvar escapeTextContentForBrowser = require('./escapeTextContentForBrowser');\nvar invariant = require('fbjs/lib/invariant');\nvar isEventSupported = require('./isEventSupported');\nvar shallowEqual = require('fbjs/lib/shallowEqual');\nvar validateDOMNesting = require('./validateDOMNesting');\nvar warning = require('fbjs/lib/warning');\n\nvar Flags = ReactDOMComponentFlags;\nvar deleteListener = EventPluginHub.deleteListener;\nvar getNode = ReactDOMComponentTree.getNodeFromInstance;\nvar listenTo = ReactBrowserEventEmitter.listenTo;\nvar registrationNameModules = EventPluginRegistry.registrationNameModules;\n\n// For quickly matching children type, to test if can be treated as content.\nvar CONTENT_TYPES = { 'string': true, 'number': true };\n\nvar STYLE = 'style';\nvar HTML = '__html';\nvar RESERVED_PROPS = {\n  children: null,\n  dangerouslySetInnerHTML: null,\n  suppressContentEditableWarning: null\n};\n\n// Node type for document fragments (Node.DOCUMENT_FRAGMENT_NODE).\nvar DOC_FRAGMENT_TYPE = 11;\n\nfunction getDeclarationErrorAddendum(internalInstance) {\n  if (internalInstance) {\n    var owner = internalInstance._currentElement._owner || null;\n    if (owner) {\n      var name = owner.getName();\n      if (name) {\n        return ' This DOM node was rendered by `' + name + '`.';\n      }\n    }\n  }\n  return '';\n}\n\nfunction friendlyStringify(obj) {\n  if (typeof obj === 'object') {\n    if (Array.isArray(obj)) {\n      return '[' + obj.map(friendlyStringify).join(', ') + ']';\n    } else {\n      var pairs = [];\n      for (var key in obj) {\n        if (Object.prototype.hasOwnProperty.call(obj, key)) {\n          var keyEscaped = /^[a-z$_][\\w$_]*$/i.test(key) ? key : JSON.stringify(key);\n          pairs.push(keyEscaped + ': ' + friendlyStringify(obj[key]));\n        }\n      }\n      return '{' + pairs.join(', ') + '}';\n    }\n  } else if (typeof obj === 'string') {\n    return JSON.stringify(obj);\n  } else if (typeof obj === 'function') {\n    return '[function object]';\n  }\n  // Differs from JSON.stringify in that undefined because undefined and that\n  // inf and nan don't become null\n  return String(obj);\n}\n\nvar styleMutationWarning = {};\n\nfunction checkAndWarnForMutatedStyle(style1, style2, component) {\n  if (style1 == null || style2 == null) {\n    return;\n  }\n  if (shallowEqual(style1, style2)) {\n    return;\n  }\n\n  var componentName = component._tag;\n  var owner = component._currentElement._owner;\n  var ownerName;\n  if (owner) {\n    ownerName = owner.getName();\n  }\n\n  var hash = ownerName + '|' + componentName;\n\n  if (styleMutationWarning.hasOwnProperty(hash)) {\n    return;\n  }\n\n  styleMutationWarning[hash] = true;\n\n  process.env.NODE_ENV !== 'production' ? warning(false, '`%s` was passed a style object that has previously been mutated. ' + 'Mutating `style` is deprecated. Consider cloning it beforehand. Check ' + 'the `render` %s. Previous style: %s. Mutated style: %s.', componentName, owner ? 'of `' + ownerName + '`' : 'using <' + componentName + '>', friendlyStringify(style1), friendlyStringify(style2)) : void 0;\n}\n\n/**\n * @param {object} component\n * @param {?object} props\n */\nfunction assertValidProps(component, props) {\n  if (!props) {\n    return;\n  }\n  // Note the use of `==` which checks for null or undefined.\n  if (voidElementTags[component._tag]) {\n    !(props.children == null && props.dangerouslySetInnerHTML == null) ? process.env.NODE_ENV !== 'production' ? invariant(false, '%s is a void element tag and must neither have `children` nor use `dangerouslySetInnerHTML`.%s', component._tag, component._currentElement._owner ? ' Check the render method of ' + component._currentElement._owner.getName() + '.' : '') : _prodInvariant('137', component._tag, component._currentElement._owner ? ' Check the render method of ' + component._currentElement._owner.getName() + '.' : '') : void 0;\n  }\n  if (props.dangerouslySetInnerHTML != null) {\n    !(props.children == null) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Can only set one of `children` or `props.dangerouslySetInnerHTML`.') : _prodInvariant('60') : void 0;\n    !(typeof props.dangerouslySetInnerHTML === 'object' && HTML in props.dangerouslySetInnerHTML) ? process.env.NODE_ENV !== 'production' ? invariant(false, '`props.dangerouslySetInnerHTML` must be in the form `{__html: ...}`. Please visit https://fb.me/react-invariant-dangerously-set-inner-html for more information.') : _prodInvariant('61') : void 0;\n  }\n  if (process.env.NODE_ENV !== 'production') {\n    process.env.NODE_ENV !== 'production' ? warning(props.innerHTML == null, 'Directly setting property `innerHTML` is not permitted. ' + 'For more information, lookup documentation on `dangerouslySetInnerHTML`.') : void 0;\n    process.env.NODE_ENV !== 'production' ? warning(props.suppressContentEditableWarning || !props.contentEditable || props.children == null, 'A component is `contentEditable` and contains `children` managed by ' + 'React. It is now your responsibility to guarantee that none of ' + 'those nodes are unexpectedly modified or duplicated. This is ' + 'probably not intentional.') : void 0;\n    process.env.NODE_ENV !== 'production' ? warning(props.onFocusIn == null && props.onFocusOut == null, 'React uses onFocus and onBlur instead of onFocusIn and onFocusOut. ' + 'All React events are normalized to bubble, so onFocusIn and onFocusOut ' + 'are not needed/supported by React.') : void 0;\n  }\n  !(props.style == null || typeof props.style === 'object') ? process.env.NODE_ENV !== 'production' ? invariant(false, 'The `style` prop expects a mapping from style properties to values, not a string. For example, style={{marginRight: spacing + \\'em\\'}} when using JSX.%s', getDeclarationErrorAddendum(component)) : _prodInvariant('62', getDeclarationErrorAddendum(component)) : void 0;\n}\n\nfunction enqueuePutListener(inst, registrationName, listener, transaction) {\n  if (transaction instanceof ReactServerRenderingTransaction) {\n    return;\n  }\n  if (process.env.NODE_ENV !== 'production') {\n    // IE8 has no API for event capturing and the `onScroll` event doesn't\n    // bubble.\n    process.env.NODE_ENV !== 'production' ? warning(registrationName !== 'onScroll' || isEventSupported('scroll', true), 'This browser doesn\\'t support the `onScroll` event') : void 0;\n  }\n  var containerInfo = inst._hostContainerInfo;\n  var isDocumentFragment = containerInfo._node && containerInfo._node.nodeType === DOC_FRAGMENT_TYPE;\n  var doc = isDocumentFragment ? containerInfo._node : containerInfo._ownerDocument;\n  listenTo(registrationName, doc);\n  transaction.getReactMountReady().enqueue(putListener, {\n    inst: inst,\n    registrationName: registrationName,\n    listener: listener\n  });\n}\n\nfunction putListener() {\n  var listenerToPut = this;\n  EventPluginHub.putListener(listenerToPut.inst, listenerToPut.registrationName, listenerToPut.listener);\n}\n\nfunction inputPostMount() {\n  var inst = this;\n  ReactDOMInput.postMountWrapper(inst);\n}\n\nfunction textareaPostMount() {\n  var inst = this;\n  ReactDOMTextarea.postMountWrapper(inst);\n}\n\nfunction optionPostMount() {\n  var inst = this;\n  ReactDOMOption.postMountWrapper(inst);\n}\n\nvar setAndValidateContentChildDev = emptyFunction;\nif (process.env.NODE_ENV !== 'production') {\n  setAndValidateContentChildDev = function (content) {\n    var hasExistingContent = this._contentDebugID != null;\n    var debugID = this._debugID;\n    // This ID represents the inlined child that has no backing instance:\n    var contentDebugID = -debugID;\n\n    if (content == null) {\n      if (hasExistingContent) {\n        ReactInstrumentation.debugTool.onUnmountComponent(this._contentDebugID);\n      }\n      this._contentDebugID = null;\n      return;\n    }\n\n    validateDOMNesting(null, String(content), this, this._ancestorInfo);\n    this._contentDebugID = contentDebugID;\n    if (hasExistingContent) {\n      ReactInstrumentation.debugTool.onBeforeUpdateComponent(contentDebugID, content);\n      ReactInstrumentation.debugTool.onUpdateComponent(contentDebugID);\n    } else {\n      ReactInstrumentation.debugTool.onBeforeMountComponent(contentDebugID, content, debugID);\n      ReactInstrumentation.debugTool.onMountComponent(contentDebugID);\n      ReactInstrumentation.debugTool.onSetChildren(debugID, [contentDebugID]);\n    }\n  };\n}\n\n// There are so many media events, it makes sense to just\n// maintain a list rather than create a `trapBubbledEvent` for each\nvar mediaEvents = {\n  topAbort: 'abort',\n  topCanPlay: 'canplay',\n  topCanPlayThrough: 'canplaythrough',\n  topDurationChange: 'durationchange',\n  topEmptied: 'emptied',\n  topEncrypted: 'encrypted',\n  topEnded: 'ended',\n  topError: 'error',\n  topLoadedData: 'loadeddata',\n  topLoadedMetadata: 'loadedmetadata',\n  topLoadStart: 'loadstart',\n  topPause: 'pause',\n  topPlay: 'play',\n  topPlaying: 'playing',\n  topProgress: 'progress',\n  topRateChange: 'ratechange',\n  topSeeked: 'seeked',\n  topSeeking: 'seeking',\n  topStalled: 'stalled',\n  topSuspend: 'suspend',\n  topTimeUpdate: 'timeupdate',\n  topVolumeChange: 'volumechange',\n  topWaiting: 'waiting'\n};\n\nfunction trapBubbledEventsLocal() {\n  var inst = this;\n  // If a component renders to null or if another component fatals and causes\n  // the state of the tree to be corrupted, `node` here can be null.\n  !inst._rootNodeID ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Must be mounted to trap events') : _prodInvariant('63') : void 0;\n  var node = getNode(inst);\n  !node ? process.env.NODE_ENV !== 'production' ? invariant(false, 'trapBubbledEvent(...): Requires node to be rendered.') : _prodInvariant('64') : void 0;\n\n  switch (inst._tag) {\n    case 'iframe':\n    case 'object':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topLoad', 'load', node)];\n      break;\n    case 'video':\n    case 'audio':\n\n      inst._wrapperState.listeners = [];\n      // Create listener for each media event\n      for (var event in mediaEvents) {\n        if (mediaEvents.hasOwnProperty(event)) {\n          inst._wrapperState.listeners.push(ReactBrowserEventEmitter.trapBubbledEvent(event, mediaEvents[event], node));\n        }\n      }\n      break;\n    case 'source':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topError', 'error', node)];\n      break;\n    case 'img':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topError', 'error', node), ReactBrowserEventEmitter.trapBubbledEvent('topLoad', 'load', node)];\n      break;\n    case 'form':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topReset', 'reset', node), ReactBrowserEventEmitter.trapBubbledEvent('topSubmit', 'submit', node)];\n      break;\n    case 'input':\n    case 'select':\n    case 'textarea':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topInvalid', 'invalid', node)];\n      break;\n  }\n}\n\nfunction postUpdateSelectWrapper() {\n  ReactDOMSelect.postUpdateWrapper(this);\n}\n\n// For HTML, certain tags should omit their close tag. We keep a whitelist for\n// those special-case tags.\n\nvar omittedCloseTags = {\n  'area': true,\n  'base': true,\n  'br': true,\n  'col': true,\n  'embed': true,\n  'hr': true,\n  'img': true,\n  'input': true,\n  'keygen': true,\n  'link': true,\n  'meta': true,\n  'param': true,\n  'source': true,\n  'track': true,\n  'wbr': true\n};\n\nvar newlineEatingTags = {\n  'listing': true,\n  'pre': true,\n  'textarea': true\n};\n\n// For HTML, certain tags cannot have children. This has the same purpose as\n// `omittedCloseTags` except that `menuitem` should still have its closing tag.\n\nvar voidElementTags = _assign({\n  'menuitem': true\n}, omittedCloseTags);\n\n// We accept any tag to be rendered but since this gets injected into arbitrary\n// HTML, we want to make sure that it's a safe tag.\n// http://www.w3.org/TR/REC-xml/#NT-Name\n\nvar VALID_TAG_REGEX = /^[a-zA-Z][a-zA-Z:_\\.\\-\\d]*$/; // Simplified subset\nvar validatedTagCache = {};\nvar hasOwnProperty = {}.hasOwnProperty;\n\nfunction validateDangerousTag(tag) {\n  if (!hasOwnProperty.call(validatedTagCache, tag)) {\n    !VALID_TAG_REGEX.test(tag) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Invalid tag: %s', tag) : _prodInvariant('65', tag) : void 0;\n    validatedTagCache[tag] = true;\n  }\n}\n\nfunction isCustomComponent(tagName, props) {\n  return tagName.indexOf('-') >= 0 || props.is != null;\n}\n\nvar globalIdCounter = 1;\n\n/**\n * Creates a new React class that is idempotent and capable of containing other\n * React components. It accepts event listeners and DOM properties that are\n * valid according to `DOMProperty`.\n *\n *  - Event listeners: `onClick`, `onMouseDown`, etc.\n *  - DOM properties: `className`, `name`, `title`, etc.\n *\n * The `style` property functions differently from the DOM API. It accepts an\n * object mapping of style properties to values.\n *\n * @constructor ReactDOMComponent\n * @extends ReactMultiChild\n */\nfunction ReactDOMComponent(element) {\n  var tag = element.type;\n  validateDangerousTag(tag);\n  this._currentElement = element;\n  this._tag = tag.toLowerCase();\n  this._namespaceURI = null;\n  this._renderedChildren = null;\n  this._previousStyle = null;\n  this._previousStyleCopy = null;\n  this._hostNode = null;\n  this._hostParent = null;\n  this._rootNodeID = 0;\n  this._domID = 0;\n  this._hostContainerInfo = null;\n  this._wrapperState = null;\n  this._topLevelWrapper = null;\n  this._flags = 0;\n  if (process.env.NODE_ENV !== 'production') {\n    this._ancestorInfo = null;\n    setAndValidateContentChildDev.call(this, null);\n  }\n}\n\nReactDOMComponent.displayName = 'ReactDOMComponent';\n\nReactDOMComponent.Mixin = {\n\n  /**\n   * Generates root tag markup then recurses. This method has side effects and\n   * is not idempotent.\n   *\n   * @internal\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {?ReactDOMComponent} the parent component instance\n   * @param {?object} info about the host container\n   * @param {object} context\n   * @return {string} The computed markup.\n   */\n  mountComponent: function (transaction, hostParent, hostContainerInfo, context) {\n    this._rootNodeID = globalIdCounter++;\n    this._domID = hostContainerInfo._idCounter++;\n    this._hostParent = hostParent;\n    this._hostContainerInfo = hostContainerInfo;\n\n    var props = this._currentElement.props;\n\n    switch (this._tag) {\n      case 'audio':\n      case 'form':\n      case 'iframe':\n      case 'img':\n      case 'link':\n      case 'object':\n      case 'source':\n      case 'video':\n        this._wrapperState = {\n          listeners: null\n        };\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n      case 'input':\n        ReactDOMInput.mountWrapper(this, props, hostParent);\n        props = ReactDOMInput.getHostProps(this, props);\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n      case 'option':\n        ReactDOMOption.mountWrapper(this, props, hostParent);\n        props = ReactDOMOption.getHostProps(this, props);\n        break;\n      case 'select':\n        ReactDOMSelect.mountWrapper(this, props, hostParent);\n        props = ReactDOMSelect.getHostProps(this, props);\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n      case 'textarea':\n        ReactDOMTextarea.mountWrapper(this, props, hostParent);\n        props = ReactDOMTextarea.getHostProps(this, props);\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n    }\n\n    assertValidProps(this, props);\n\n    // We create tags in the namespace of their parent container, except HTML\n    // tags get no namespace.\n    var namespaceURI;\n    var parentTag;\n    if (hostParent != null) {\n      namespaceURI = hostParent._namespaceURI;\n      parentTag = hostParent._tag;\n    } else if (hostContainerInfo._tag) {\n      namespaceURI = hostContainerInfo._namespaceURI;\n      parentTag = hostContainerInfo._tag;\n    }\n    if (namespaceURI == null || namespaceURI === DOMNamespaces.svg && parentTag === 'foreignobject') {\n      namespaceURI = DOMNamespaces.html;\n    }\n    if (namespaceURI === DOMNamespaces.html) {\n      if (this._tag === 'svg') {\n        namespaceURI = DOMNamespaces.svg;\n      } else if (this._tag === 'math') {\n        namespaceURI = DOMNamespaces.mathml;\n      }\n    }\n    this._namespaceURI = namespaceURI;\n\n    if (process.env.NODE_ENV !== 'production') {\n      var parentInfo;\n      if (hostParent != null) {\n        parentInfo = hostParent._ancestorInfo;\n      } else if (hostContainerInfo._tag) {\n        parentInfo = hostContainerInfo._ancestorInfo;\n      }\n      if (parentInfo) {\n        // parentInfo should always be present except for the top-level\n        // component when server rendering\n        validateDOMNesting(this._tag, null, this, parentInfo);\n      }\n      this._ancestorInfo = validateDOMNesting.updatedAncestorInfo(parentInfo, this._tag, this);\n    }\n\n    var mountImage;\n    if (transaction.useCreateElement) {\n      var ownerDocument = hostContainerInfo._ownerDocument;\n      var el;\n      if (namespaceURI === DOMNamespaces.html) {\n        if (this._tag === 'script') {\n          // Create the script via .innerHTML so its \"parser-inserted\" flag is\n          // set to true and it does not execute\n          var div = ownerDocument.createElement('div');\n          var type = this._currentElement.type;\n          div.innerHTML = '<' + type + '></' + type + '>';\n          el = div.removeChild(div.firstChild);\n        } else if (props.is) {\n          el = ownerDocument.createElement(this._currentElement.type, props.is);\n        } else {\n          // Separate else branch instead of using `props.is || undefined` above becuase of a Firefox bug.\n          // See discussion in https://github.com/facebook/react/pull/6896\n          // and discussion in https://bugzilla.mozilla.org/show_bug.cgi?id=1276240\n          el = ownerDocument.createElement(this._currentElement.type);\n        }\n      } else {\n        el = ownerDocument.createElementNS(namespaceURI, this._currentElement.type);\n      }\n      ReactDOMComponentTree.precacheNode(this, el);\n      this._flags |= Flags.hasCachedChildNodes;\n      if (!this._hostParent) {\n        DOMPropertyOperations.setAttributeForRoot(el);\n      }\n      this._updateDOMProperties(null, props, transaction);\n      var lazyTree = DOMLazyTree(el);\n      this._createInitialChildren(transaction, props, context, lazyTree);\n      mountImage = lazyTree;\n    } else {\n      var tagOpen = this._createOpenTagMarkupAndPutListeners(transaction, props);\n      var tagContent = this._createContentMarkup(transaction, props, context);\n      if (!tagContent && omittedCloseTags[this._tag]) {\n        mountImage = tagOpen + '/>';\n      } else {\n        mountImage = tagOpen + '>' + tagContent + '</' + this._currentElement.type + '>';\n      }\n    }\n\n    switch (this._tag) {\n      case 'input':\n        transaction.getReactMountReady().enqueue(inputPostMount, this);\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'textarea':\n        transaction.getReactMountReady().enqueue(textareaPostMount, this);\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'select':\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'button':\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'option':\n        transaction.getReactMountReady().enqueue(optionPostMount, this);\n        break;\n    }\n\n    return mountImage;\n  },\n\n  /**\n   * Creates markup for the open tag and all attributes.\n   *\n   * This method has side effects because events get registered.\n   *\n   * Iterating over object properties is faster than iterating over arrays.\n   * @see http://jsperf.com/obj-vs-arr-iteration\n   *\n   * @private\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {object} props\n   * @return {string} Markup of opening tag.\n   */\n  _createOpenTagMarkupAndPutListeners: function (transaction, props) {\n    var ret = '<' + this._currentElement.type;\n\n    for (var propKey in props) {\n      if (!props.hasOwnProperty(propKey)) {\n        continue;\n      }\n      var propValue = props[propKey];\n      if (propValue == null) {\n        continue;\n      }\n      if (registrationNameModules.hasOwnProperty(propKey)) {\n        if (propValue) {\n          enqueuePutListener(this, propKey, propValue, transaction);\n        }\n      } else {\n        if (propKey === STYLE) {\n          if (propValue) {\n            if (process.env.NODE_ENV !== 'production') {\n              // See `_updateDOMProperties`. style block\n              this._previousStyle = propValue;\n            }\n            propValue = this._previousStyleCopy = _assign({}, props.style);\n          }\n          propValue = CSSPropertyOperations.createMarkupForStyles(propValue, this);\n        }\n        var markup = null;\n        if (this._tag != null && isCustomComponent(this._tag, props)) {\n          if (!RESERVED_PROPS.hasOwnProperty(propKey)) {\n            markup = DOMPropertyOperations.createMarkupForCustomAttribute(propKey, propValue);\n          }\n        } else {\n          markup = DOMPropertyOperations.createMarkupForProperty(propKey, propValue);\n        }\n        if (markup) {\n          ret += ' ' + markup;\n        }\n      }\n    }\n\n    // For static pages, no need to put React ID and checksum. Saves lots of\n    // bytes.\n    if (transaction.renderToStaticMarkup) {\n      return ret;\n    }\n\n    if (!this._hostParent) {\n      ret += ' ' + DOMPropertyOperations.createMarkupForRoot();\n    }\n    ret += ' ' + DOMPropertyOperations.createMarkupForID(this._domID);\n    return ret;\n  },\n\n  /**\n   * Creates markup for the content between the tags.\n   *\n   * @private\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {object} props\n   * @param {object} context\n   * @return {string} Content markup.\n   */\n  _createContentMarkup: function (transaction, props, context) {\n    var ret = '';\n\n    // Intentional use of != to avoid catching zero/false.\n    var innerHTML = props.dangerouslySetInnerHTML;\n    if (innerHTML != null) {\n      if (innerHTML.__html != null) {\n        ret = innerHTML.__html;\n      }\n    } else {\n      var contentToUse = CONTENT_TYPES[typeof props.children] ? props.children : null;\n      var childrenToUse = contentToUse != null ? null : props.children;\n      if (contentToUse != null) {\n        // TODO: Validate that text is allowed as a child of this node\n        ret = escapeTextContentForBrowser(contentToUse);\n        if (process.env.NODE_ENV !== 'production') {\n          setAndValidateContentChildDev.call(this, contentToUse);\n        }\n      } else if (childrenToUse != null) {\n        var mountImages = this.mountChildren(childrenToUse, transaction, context);\n        ret = mountImages.join('');\n      }\n    }\n    if (newlineEatingTags[this._tag] && ret.charAt(0) === '\\n') {\n      // text/html ignores the first character in these tags if it's a newline\n      // Prefer to break application/xml over text/html (for now) by adding\n      // a newline specifically to get eaten by the parser. (Alternately for\n      // textareas, replacing \"^\\n\" with \"\\r\\n\" doesn't get eaten, and the first\n      // \\r is normalized out by HTMLTextAreaElement#value.)\n      // See: <http://www.w3.org/TR/html-polyglot/#newlines-in-textarea-and-pre>\n      // See: <http://www.w3.org/TR/html5/syntax.html#element-restrictions>\n      // See: <http://www.w3.org/TR/html5/syntax.html#newlines>\n      // See: Parsing of \"textarea\" \"listing\" and \"pre\" elements\n      //  from <http://www.w3.org/TR/html5/syntax.html#parsing-main-inbody>\n      return '\\n' + ret;\n    } else {\n      return ret;\n    }\n  },\n\n  _createInitialChildren: function (transaction, props, context, lazyTree) {\n    // Intentional use of != to avoid catching zero/false.\n    var innerHTML = props.dangerouslySetInnerHTML;\n    if (innerHTML != null) {\n      if (innerHTML.__html != null) {\n        DOMLazyTree.queueHTML(lazyTree, innerHTML.__html);\n      }\n    } else {\n      var contentToUse = CONTENT_TYPES[typeof props.children] ? props.children : null;\n      var childrenToUse = contentToUse != null ? null : props.children;\n      // TODO: Validate that text is allowed as a child of this node\n      if (contentToUse != null) {\n        // Avoid setting textContent when the text is empty. In IE11 setting\n        // textContent on a text area will cause the placeholder to not\n        // show within the textarea until it has been focused and blurred again.\n        // https://github.com/facebook/react/issues/6731#issuecomment-254874553\n        if (contentToUse !== '') {\n          if (process.env.NODE_ENV !== 'production') {\n            setAndValidateContentChildDev.call(this, contentToUse);\n          }\n          DOMLazyTree.queueText(lazyTree, contentToUse);\n        }\n      } else if (childrenToUse != null) {\n        var mountImages = this.mountChildren(childrenToUse, transaction, context);\n        for (var i = 0; i < mountImages.length; i++) {\n          DOMLazyTree.queueChild(lazyTree, mountImages[i]);\n        }\n      }\n    }\n  },\n\n  /**\n   * Receives a next element and updates the component.\n   *\n   * @internal\n   * @param {ReactElement} nextElement\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {object} context\n   */\n  receiveComponent: function (nextElement, transaction, context) {\n    var prevElement = this._currentElement;\n    this._currentElement = nextElement;\n    this.updateComponent(transaction, prevElement, nextElement, context);\n  },\n\n  /**\n   * Updates a DOM component after it has already been allocated and\n   * attached to the DOM. Reconciles the root DOM node, then recurses.\n   *\n   * @param {ReactReconcileTransaction} transaction\n   * @param {ReactElement} prevElement\n   * @param {ReactElement} nextElement\n   * @internal\n   * @overridable\n   */\n  updateComponent: function (transaction, prevElement, nextElement, context) {\n    var lastProps = prevElement.props;\n    var nextProps = this._currentElement.props;\n\n    switch (this._tag) {\n      case 'input':\n        lastProps = ReactDOMInput.getHostProps(this, lastProps);\n        nextProps = ReactDOMInput.getHostProps(this, nextProps);\n        break;\n      case 'option':\n        lastProps = ReactDOMOption.getHostProps(this, lastProps);\n        nextProps = ReactDOMOption.getHostProps(this, nextProps);\n        break;\n      case 'select':\n        lastProps = ReactDOMSelect.getHostProps(this, lastProps);\n        nextProps = ReactDOMSelect.getHostProps(this, nextProps);\n        break;\n      case 'textarea':\n        lastProps = ReactDOMTextarea.getHostProps(this, lastProps);\n        nextProps = ReactDOMTextarea.getHostProps(this, nextProps);\n        break;\n    }\n\n    assertValidProps(this, nextProps);\n    this._updateDOMProperties(lastProps, nextProps, transaction);\n    this._updateDOMChildren(lastProps, nextProps, transaction, context);\n\n    switch (this._tag) {\n      case 'input':\n        // Update the wrapper around inputs *after* updating props. This has to\n        // happen after `_updateDOMProperties`. Otherwise HTML5 input validations\n        // raise warnings and prevent the new value from being assigned.\n        ReactDOMInput.updateWrapper(this);\n        break;\n      case 'textarea':\n        ReactDOMTextarea.updateWrapper(this);\n        break;\n      case 'select':\n        // <select> value update needs to occur after <option> children\n        // reconciliation\n        transaction.getReactMountReady().enqueue(postUpdateSelectWrapper, this);\n        break;\n    }\n  },\n\n  /**\n   * Reconciles the properties by detecting differences in property values and\n   * updating the DOM as necessary. This function is probably the single most\n   * critical path for performance optimization.\n   *\n   * TODO: Benchmark whether checking for changed values in memory actually\n   *       improves performance (especially statically positioned elements).\n   * TODO: Benchmark the effects of putting this at the top since 99% of props\n   *       do not change for a given reconciliation.\n   * TODO: Benchmark areas that can be improved with caching.\n   *\n   * @private\n   * @param {object} lastProps\n   * @param {object} nextProps\n   * @param {?DOMElement} node\n   */\n  _updateDOMProperties: function (lastProps, nextProps, transaction) {\n    var propKey;\n    var styleName;\n    var styleUpdates;\n    for (propKey in lastProps) {\n      if (nextProps.hasOwnProperty(propKey) || !lastProps.hasOwnProperty(propKey) || lastProps[propKey] == null) {\n        continue;\n      }\n      if (propKey === STYLE) {\n        var lastStyle = this._previousStyleCopy;\n        for (styleName in lastStyle) {\n          if (lastStyle.hasOwnProperty(styleName)) {\n            styleUpdates = styleUpdates || {};\n            styleUpdates[styleName] = '';\n          }\n        }\n        this._previousStyleCopy = null;\n      } else if (registrationNameModules.hasOwnProperty(propKey)) {\n        if (lastProps[propKey]) {\n          // Only call deleteListener if there was a listener previously or\n          // else willDeleteListener gets called when there wasn't actually a\n          // listener (e.g., onClick={null})\n          deleteListener(this, propKey);\n        }\n      } else if (isCustomComponent(this._tag, lastProps)) {\n        if (!RESERVED_PROPS.hasOwnProperty(propKey)) {\n          DOMPropertyOperations.deleteValueForAttribute(getNode(this), propKey);\n        }\n      } else if (DOMProperty.properties[propKey] || DOMProperty.isCustomAttribute(propKey)) {\n        DOMPropertyOperations.deleteValueForProperty(getNode(this), propKey);\n      }\n    }\n    for (propKey in nextProps) {\n      var nextProp = nextProps[propKey];\n      var lastProp = propKey === STYLE ? this._previousStyleCopy : lastProps != null ? lastProps[propKey] : undefined;\n      if (!nextProps.hasOwnProperty(propKey) || nextProp === lastProp || nextProp == null && lastProp == null) {\n        continue;\n      }\n      if (propKey === STYLE) {\n        if (nextProp) {\n          if (process.env.NODE_ENV !== 'production') {\n            checkAndWarnForMutatedStyle(this._previousStyleCopy, this._previousStyle, this);\n            this._previousStyle = nextProp;\n          }\n          nextProp = this._previousStyleCopy = _assign({}, nextProp);\n        } else {\n          this._previousStyleCopy = null;\n        }\n        if (lastProp) {\n          // Unset styles on `lastProp` but not on `nextProp`.\n          for (styleName in lastProp) {\n            if (lastProp.hasOwnProperty(styleName) && (!nextProp || !nextProp.hasOwnProperty(styleName))) {\n              styleUpdates = styleUpdates || {};\n              styleUpdates[styleName] = '';\n            }\n          }\n          // Update styles that changed since `lastProp`.\n          for (styleName in nextProp) {\n            if (nextProp.hasOwnProperty(styleName) && lastProp[styleName] !== nextProp[styleName]) {\n              styleUpdates = styleUpdates || {};\n              styleUpdates[styleName] = nextProp[styleName];\n            }\n          }\n        } else {\n          // Relies on `updateStylesByID` not mutating `styleUpdates`.\n          styleUpdates = nextProp;\n        }\n      } else if (registrationNameModules.hasOwnProperty(propKey)) {\n        if (nextProp) {\n          enqueuePutListener(this, propKey, nextProp, transaction);\n        } else if (lastProp) {\n          deleteListener(this, propKey);\n        }\n      } else if (isCustomComponent(this._tag, nextProps)) {\n        if (!RESERVED_PROPS.hasOwnProperty(propKey)) {\n          DOMPropertyOperations.setValueForAttribute(getNode(this), propKey, nextProp);\n        }\n      } else if (DOMProperty.properties[propKey] || DOMProperty.isCustomAttribute(propKey)) {\n        var node = getNode(this);\n        // If we're updating to null or undefined, we should remove the property\n        // from the DOM node instead of inadvertently setting to a string. This\n        // brings us in line with the same behavior we have on initial render.\n        if (nextProp != null) {\n          DOMPropertyOperations.setValueForProperty(node, propKey, nextProp);\n        } else {\n          DOMPropertyOperations.deleteValueForProperty(node, propKey);\n        }\n      }\n    }\n    if (styleUpdates) {\n      CSSPropertyOperations.setValueForStyles(getNode(this), styleUpdates, this);\n    }\n  },\n\n  /**\n   * Reconciles the children with the various properties that affect the\n   * children content.\n   *\n   * @param {object} lastProps\n   * @param {object} nextProps\n   * @param {ReactReconcileTransaction} transaction\n   * @param {object} context\n   */\n  _updateDOMChildren: function (lastProps, nextProps, transaction, context) {\n    var lastContent = CONTENT_TYPES[typeof lastProps.children] ? lastProps.children : null;\n    var nextContent = CONTENT_TYPES[typeof nextProps.children] ? nextProps.children : null;\n\n    var lastHtml = lastProps.dangerouslySetInnerHTML && lastProps.dangerouslySetInnerHTML.__html;\n    var nextHtml = nextProps.dangerouslySetInnerHTML && nextProps.dangerouslySetInnerHTML.__html;\n\n    // Note the use of `!=` which checks for null or undefined.\n    var lastChildren = lastContent != null ? null : lastProps.children;\n    var nextChildren = nextContent != null ? null : nextProps.children;\n\n    // If we're switching from children to content/html or vice versa, remove\n    // the old content\n    var lastHasContentOrHtml = lastContent != null || lastHtml != null;\n    var nextHasContentOrHtml = nextContent != null || nextHtml != null;\n    if (lastChildren != null && nextChildren == null) {\n      this.updateChildren(null, transaction, context);\n    } else if (lastHasContentOrHtml && !nextHasContentOrHtml) {\n      this.updateTextContent('');\n      if (process.env.NODE_ENV !== 'production') {\n        ReactInstrumentation.debugTool.onSetChildren(this._debugID, []);\n      }\n    }\n\n    if (nextContent != null) {\n      if (lastContent !== nextContent) {\n        this.updateTextContent('' + nextContent);\n        if (process.env.NODE_ENV !== 'production') {\n          setAndValidateContentChildDev.call(this, nextContent);\n        }\n      }\n    } else if (nextHtml != null) {\n      if (lastHtml !== nextHtml) {\n        this.updateMarkup('' + nextHtml);\n      }\n      if (process.env.NODE_ENV !== 'production') {\n        ReactInstrumentation.debugTool.onSetChildren(this._debugID, []);\n      }\n    } else if (nextChildren != null) {\n      if (process.env.NODE_ENV !== 'production') {\n        setAndValidateContentChildDev.call(this, null);\n      }\n\n      this.updateChildren(nextChildren, transaction, context);\n    }\n  },\n\n  getHostNode: function () {\n    return getNode(this);\n  },\n\n  /**\n   * Destroys all event registrations for this instance. Does not remove from\n   * the DOM. That must be done by the parent.\n   *\n   * @internal\n   */\n  unmountComponent: function (safely) {\n    switch (this._tag) {\n      case 'audio':\n      case 'form':\n      case 'iframe':\n      case 'img':\n      case 'link':\n      case 'object':\n      case 'source':\n      case 'video':\n        var listeners = this._wrapperState.listeners;\n        if (listeners) {\n          for (var i = 0; i < listeners.length; i++) {\n            listeners[i].remove();\n          }\n        }\n        break;\n      case 'html':\n      case 'head':\n      case 'body':\n        /**\n         * Components like <html> <head> and <body> can't be removed or added\n         * easily in a cross-browser way, however it's valuable to be able to\n         * take advantage of React's reconciliation for styling and <title>\n         * management. So we just document it and throw in dangerous cases.\n         */\n        !false ? process.env.NODE_ENV !== 'production' ? invariant(false, '<%s> tried to unmount. Because of cross-browser quirks it is impossible to unmount some top-level components (eg <html>, <head>, and <body>) reliably and efficiently. To fix this, have a single top-level component that never unmounts render these elements.', this._tag) : _prodInvariant('66', this._tag) : void 0;\n        break;\n    }\n\n    this.unmountChildren(safely);\n    ReactDOMComponentTree.uncacheNode(this);\n    EventPluginHub.deleteAllListeners(this);\n    this._rootNodeID = 0;\n    this._domID = 0;\n    this._wrapperState = null;\n\n    if (process.env.NODE_ENV !== 'production') {\n      setAndValidateContentChildDev.call(this, null);\n    }\n  },\n\n  getPublicInstance: function () {\n    return getNode(this);\n  }\n\n};\n\n_assign(ReactDOMComponent.prototype, ReactDOMComponent.Mixin, ReactMultiChild.Mixin);\n\nmodule.exports = ReactDOMComponent;\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/react-dom/lib/ReactDOMComponent.js\n// module id = 265\n// module chunks = 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Severity: Minor
Found in app/assets/javascripts/metamaps.secret.bundle.js by fixme

FIXME found
Open

    eval(" /* eslint-env node */\n'use strict';\n\n// SDP helpers.\nvar SDPUtils = {};\n\n// Generate an alphanumeric identifier for cname or mids.\n// TODO: use UUIDs instead? https://gist.github.com/jed/982883\nSDPUtils.generateIdentifier = function() {\n  return Math.random().toString(36).substr(2, 10);\n};\n\n// The RTCP CNAME used by all peerconnections from the same JS.\nSDPUtils.localCName = SDPUtils.generateIdentifier();\n\n// Splits SDP into lines, dealing with both CRLF and LF.\nSDPUtils.splitLines = function(blob) {\n  return blob.trim().split('\\n').map(function(line) {\n    return line.trim();\n  });\n};\n// Splits SDP into sessionpart and mediasections. Ensures CRLF.\nSDPUtils.splitSections = function(blob) {\n  var parts = blob.split('\\nm=');\n  return parts.map(function(part, index) {\n    return (index > 0 ? 'm=' + part : part).trim() + '\\r\\n';\n  });\n};\n\n// Returns lines that start with a certain prefix.\nSDPUtils.matchPrefix = function(blob, prefix) {\n  return SDPUtils.splitLines(blob).filter(function(line) {\n    return line.indexOf(prefix) === 0;\n  });\n};\n\n// Parses an ICE candidate line. Sample input:\n// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8\n// rport 55996\"\nSDPUtils.parseCandidate = function(line) {\n  var parts;\n  // Parse both variants.\n  if (line.indexOf('a=candidate:') === 0) {\n    parts = line.substring(12).split(' ');\n  } else {\n    parts = line.substring(10).split(' ');\n  }\n\n  var candidate = {\n    foundation: parts[0],\n    component: parts[1],\n    protocol: parts[2].toLowerCase(),\n    priority: parseInt(parts[3], 10),\n    ip: parts[4],\n    port: parseInt(parts[5], 10),\n    // skip parts[6] == 'typ'\n    type: parts[7]\n  };\n\n  for (var i = 8; i < parts.length; i += 2) {\n    switch (parts[i]) {\n      case 'raddr':\n        candidate.relatedAddress = parts[i + 1];\n        break;\n      case 'rport':\n        candidate.relatedPort = parseInt(parts[i + 1], 10);\n        break;\n      case 'tcptype':\n        candidate.tcpType = parts[i + 1];\n        break;\n      default: // Unknown extensions are silently ignored.\n        break;\n    }\n  }\n  return candidate;\n};\n\n// Translates a candidate object into SDP candidate attribute.\nSDPUtils.writeCandidate = function(candidate) {\n  var sdp = [];\n  sdp.push(candidate.foundation);\n  sdp.push(candidate.component);\n  sdp.push(candidate.protocol.toUpperCase());\n  sdp.push(candidate.priority);\n  sdp.push(candidate.ip);\n  sdp.push(candidate.port);\n\n  var type = candidate.type;\n  sdp.push('typ');\n  sdp.push(type);\n  if (type !== 'host' && candidate.relatedAddress &&\n      candidate.relatedPort) {\n    sdp.push('raddr');\n    sdp.push(candidate.relatedAddress); // was: relAddr\n    sdp.push('rport');\n    sdp.push(candidate.relatedPort); // was: relPort\n  }\n  if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') {\n    sdp.push('tcptype');\n    sdp.push(candidate.tcpType);\n  }\n  return 'candidate:' + sdp.join(' ');\n};\n\n// Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input:\n// a=rtpmap:111 opus/48000/2\nSDPUtils.parseRtpMap = function(line) {\n  var parts = line.substr(9).split(' ');\n  var parsed = {\n    payloadType: parseInt(parts.shift(), 10) // was: id\n  };\n\n  parts = parts[0].split('/');\n\n  parsed.name = parts[0];\n  parsed.clockRate = parseInt(parts[1], 10); // was: clockrate\n  // was: channels\n  parsed.numChannels = parts.length === 3 ? parseInt(parts[2], 10) : 1;\n  return parsed;\n};\n\n// Generate an a=rtpmap line from RTCRtpCodecCapability or\n// RTCRtpCodecParameters.\nSDPUtils.writeRtpMap = function(codec) {\n  var pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate +\n      (codec.numChannels !== 1 ? '/' + codec.numChannels : '') + '\\r\\n';\n};\n\n// Parses an a=extmap line (headerextension from RFC 5285). Sample input:\n// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset\nSDPUtils.parseExtmap = function(line) {\n  var parts = line.substr(9).split(' ');\n  return {\n    id: parseInt(parts[0], 10),\n    uri: parts[1]\n  };\n};\n\n// Generates a=extmap line from RTCRtpHeaderExtensionParameters or\n// RTCRtpHeaderExtension.\nSDPUtils.writeExtmap = function(headerExtension) {\n  return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) +\n       ' ' + headerExtension.uri + '\\r\\n';\n};\n\n// Parses an ftmp line, returns dictionary. Sample input:\n// a=fmtp:96 vbr=on;cng=on\n// Also deals with vbr=on; cng=on\nSDPUtils.parseFmtp = function(line) {\n  var parsed = {};\n  var kv;\n  var parts = line.substr(line.indexOf(' ') + 1).split(';');\n  for (var j = 0; j < parts.length; j++) {\n    kv = parts[j].trim().split('=');\n    parsed[kv[0].trim()] = kv[1];\n  }\n  return parsed;\n};\n\n// Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeFmtp = function(codec) {\n  var line = '';\n  var pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  if (codec.parameters && Object.keys(codec.parameters).length) {\n    var params = [];\n    Object.keys(codec.parameters).forEach(function(param) {\n      params.push(param + '=' + codec.parameters[param]);\n    });\n    line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\\r\\n';\n  }\n  return line;\n};\n\n// Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input:\n// a=rtcp-fb:98 nack rpsi\nSDPUtils.parseRtcpFb = function(line) {\n  var parts = line.substr(line.indexOf(' ') + 1).split(' ');\n  return {\n    type: parts.shift(),\n    parameter: parts.join(' ')\n  };\n};\n// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeRtcpFb = function(codec) {\n  var lines = '';\n  var pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  if (codec.rtcpFeedback && codec.rtcpFeedback.length) {\n    // FIXME: special handling for trr-int?\n    codec.rtcpFeedback.forEach(function(fb) {\n      lines += 'a=rtcp-fb:' + pt + ' ' + fb.type +\n      (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') +\n          '\\r\\n';\n    });\n  }\n  return lines;\n};\n\n// Parses an RFC 5576 ssrc media attribute. Sample input:\n// a=ssrc:3735928559 cname:something\nSDPUtils.parseSsrcMedia = function(line) {\n  var sp = line.indexOf(' ');\n  var parts = {\n    ssrc: parseInt(line.substr(7, sp - 7), 10)\n  };\n  var colon = line.indexOf(':', sp);\n  if (colon > -1) {\n    parts.attribute = line.substr(sp + 1, colon - sp - 1);\n    parts.value = line.substr(colon + 1);\n  } else {\n    parts.attribute = line.substr(sp + 1);\n  }\n  return parts;\n};\n\n// Extracts DTLS parameters from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n//   get the fingerprint line as input. See also getIceParameters.\nSDPUtils.getDtlsParameters = function(mediaSection, sessionpart) {\n  var lines = SDPUtils.splitLines(mediaSection);\n  // Search in session part, too.\n  lines = lines.concat(SDPUtils.splitLines(sessionpart));\n  var fpLine = lines.filter(function(line) {\n    return line.indexOf('a=fingerprint:') === 0;\n  })[0].substr(14);\n  // Note: a=setup line is ignored since we use the 'auto' role.\n  var dtlsParameters = {\n    role: 'auto',\n    fingerprints: [{\n      algorithm: fpLine.split(' ')[0],\n      value: fpLine.split(' ')[1]\n    }]\n  };\n  return dtlsParameters;\n};\n\n// Serializes DTLS parameters to SDP.\nSDPUtils.writeDtlsParameters = function(params, setupType) {\n  var sdp = 'a=setup:' + setupType + '\\r\\n';\n  params.fingerprints.forEach(function(fp) {\n    sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\\r\\n';\n  });\n  return sdp;\n};\n// Parses ICE information from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n//   get the ice-ufrag and ice-pwd lines as input.\nSDPUtils.getIceParameters = function(mediaSection, sessionpart) {\n  var lines = SDPUtils.splitLines(mediaSection);\n  // Search in session part, too.\n  lines = lines.concat(SDPUtils.splitLines(sessionpart));\n  var iceParameters = {\n    usernameFragment: lines.filter(function(line) {\n      return line.indexOf('a=ice-ufrag:') === 0;\n    })[0].substr(12),\n    password: lines.filter(function(line) {\n      return line.indexOf('a=ice-pwd:') === 0;\n    })[0].substr(10)\n  };\n  return iceParameters;\n};\n\n// Serializes ICE parameters to SDP.\nSDPUtils.writeIceParameters = function(params) {\n  return 'a=ice-ufrag:' + params.usernameFragment + '\\r\\n' +\n      'a=ice-pwd:' + params.password + '\\r\\n';\n};\n\n// Parses the SDP media section and returns RTCRtpParameters.\nSDPUtils.parseRtpParameters = function(mediaSection) {\n  var description = {\n    codecs: [],\n    headerExtensions: [],\n    fecMechanisms: [],\n    rtcp: []\n  };\n  var lines = SDPUtils.splitLines(mediaSection);\n  var mline = lines[0].split(' ');\n  for (var i = 3; i < mline.length; i++) { // find all codecs from mline[3..]\n    var pt = mline[i];\n    var rtpmapline = SDPUtils.matchPrefix(\n        mediaSection, 'a=rtpmap:' + pt + ' ')[0];\n    if (rtpmapline) {\n      var codec = SDPUtils.parseRtpMap(rtpmapline);\n      var fmtps = SDPUtils.matchPrefix(\n          mediaSection, 'a=fmtp:' + pt + ' ');\n      // Only the first a=fmtp:<pt> is considered.\n      codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};\n      codec.rtcpFeedback = SDPUtils.matchPrefix(\n          mediaSection, 'a=rtcp-fb:' + pt + ' ')\n        .map(SDPUtils.parseRtcpFb);\n      description.codecs.push(codec);\n      // parse FEC mechanisms from rtpmap lines.\n      switch (codec.name.toUpperCase()) {\n        case 'RED':\n        case 'ULPFEC':\n          description.fecMechanisms.push(codec.name.toUpperCase());\n          break;\n        default: // only RED and ULPFEC are recognized as FEC mechanisms.\n          break;\n      }\n    }\n  }\n  SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function(line) {\n    description.headerExtensions.push(SDPUtils.parseExtmap(line));\n  });\n  // FIXME: parse rtcp.\n  return description;\n};\n\n// Generates parts of the SDP media section describing the capabilities /\n// parameters.\nSDPUtils.writeRtpDescription = function(kind, caps) {\n  var sdp = '';\n\n  // Build the mline.\n  sdp += 'm=' + kind + ' ';\n  sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs.\n  sdp += ' UDP/TLS/RTP/SAVPF ';\n  sdp += caps.codecs.map(function(codec) {\n    if (codec.preferredPayloadType !== undefined) {\n      return codec.preferredPayloadType;\n    }\n    return codec.payloadType;\n  }).join(' ') + '\\r\\n';\n\n  sdp += 'c=IN IP4 0.0.0.0\\r\\n';\n  sdp += 'a=rtcp:9 IN IP4 0.0.0.0\\r\\n';\n\n  // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb.\n  caps.codecs.forEach(function(codec) {\n    sdp += SDPUtils.writeRtpMap(codec);\n    sdp += SDPUtils.writeFmtp(codec);\n    sdp += SDPUtils.writeRtcpFb(codec);\n  });\n  sdp += 'a=rtcp-mux\\r\\n';\n\n  caps.headerExtensions.forEach(function(extension) {\n    sdp += SDPUtils.writeExtmap(extension);\n  });\n  // FIXME: write fecMechanisms.\n  return sdp;\n};\n\n// Parses the SDP media section and returns an array of\n// RTCRtpEncodingParameters.\nSDPUtils.parseRtpEncodingParameters = function(mediaSection) {\n  var encodingParameters = [];\n  var description = SDPUtils.parseRtpParameters(mediaSection);\n  var hasRed = description.fecMechanisms.indexOf('RED') !== -1;\n  var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1;\n\n  // filter a=ssrc:... cname:, ignore PlanB-msid\n  var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n  .map(function(line) {\n    return SDPUtils.parseSsrcMedia(line);\n  })\n  .filter(function(parts) {\n    return parts.attribute === 'cname';\n  });\n  var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc;\n  var secondarySsrc;\n\n  var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID')\n  .map(function(line) {\n    var parts = line.split(' ');\n    parts.shift();\n    return parts.map(function(part) {\n      return parseInt(part, 10);\n    });\n  });\n  if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) {\n    secondarySsrc = flows[0][1];\n  }\n\n  description.codecs.forEach(function(codec) {\n    if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) {\n      var encParam = {\n        ssrc: primarySsrc,\n        codecPayloadType: parseInt(codec.parameters.apt, 10),\n        rtx: {\n          payloadType: codec.payloadType,\n          ssrc: secondarySsrc\n        }\n      };\n      encodingParameters.push(encParam);\n      if (hasRed) {\n        encParam = JSON.parse(JSON.stringify(encParam));\n        encParam.fec = {\n          ssrc: secondarySsrc,\n          mechanism: hasUlpfec ? 'red+ulpfec' : 'red'\n        };\n        encodingParameters.push(encParam);\n      }\n    }\n  });\n  if (encodingParameters.length === 0 && primarySsrc) {\n    encodingParameters.push({\n      ssrc: primarySsrc\n    });\n  }\n\n  // we support both b=AS and b=TIAS but interpret AS as TIAS.\n  var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b=');\n  if (bandwidth.length) {\n    if (bandwidth[0].indexOf('b=TIAS:') === 0) {\n      bandwidth = parseInt(bandwidth[0].substr(7), 10);\n    } else if (bandwidth[0].indexOf('b=AS:') === 0) {\n      bandwidth = parseInt(bandwidth[0].substr(5), 10);\n    }\n    encodingParameters.forEach(function(params) {\n      params.maxBitrate = bandwidth;\n    });\n  }\n  return encodingParameters;\n};\n\nSDPUtils.writeSessionBoilerplate = function() {\n  // FIXME: sess-id should be an NTP timestamp.\n  return 'v=0\\r\\n' +\n      'o=thisisadapterortc 8169639915646943137 2 IN IP4 127.0.0.1\\r\\n' +\n      's=-\\r\\n' +\n      't=0 0\\r\\n';\n};\n\nSDPUtils.writeMediaSection = function(transceiver, caps, type, stream) {\n  var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);\n\n  // Map ICE parameters (ufrag, pwd) to SDP.\n  sdp += SDPUtils.writeIceParameters(\n      transceiver.iceGatherer.getLocalParameters());\n\n  // Map DTLS parameters to SDP.\n  sdp += SDPUtils.writeDtlsParameters(\n      transceiver.dtlsTransport.getLocalParameters(),\n      type === 'offer' ? 'actpass' : 'active');\n\n  sdp += 'a=mid:' + transceiver.mid + '\\r\\n';\n\n  if (transceiver.rtpSender && transceiver.rtpReceiver) {\n    sdp += 'a=sendrecv\\r\\n';\n  } else if (transceiver.rtpSender) {\n    sdp += 'a=sendonly\\r\\n';\n  } else if (transceiver.rtpReceiver) {\n    sdp += 'a=recvonly\\r\\n';\n  } else {\n    sdp += 'a=inactive\\r\\n';\n  }\n\n  // FIXME: for RTX there might be multiple SSRCs. Not implemented in Edge yet.\n  if (transceiver.rtpSender) {\n    var msid = 'msid:' + stream.id + ' ' +\n        transceiver.rtpSender.track.id + '\\r\\n';\n    sdp += 'a=' + msid;\n    sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n        ' ' + msid;\n  }\n  // FIXME: this should be written by writeRtpDescription.\n  sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n      ' cname:' + SDPUtils.localCName + '\\r\\n';\n  return sdp;\n};\n\n// Gets the direction from the mediaSection or the sessionpart.\nSDPUtils.getDirection = function(mediaSection, sessionpart) {\n  // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv.\n  var lines = SDPUtils.splitLines(mediaSection);\n  for (var i = 0; i < lines.length; i++) {\n    switch (lines[i]) {\n      case 'a=sendrecv':\n      case 'a=sendonly':\n      case 'a=recvonly':\n      case 'a=inactive':\n        return lines[i].substr(2);\n      default:\n        // FIXME: What should happen here?\n    }\n  }\n  if (sessionpart) {\n    return SDPUtils.getDirection(sessionpart);\n  }\n  return 'sendrecv';\n};\n\n// Expose public methods.\nmodule.exports = SDPUtils;\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"452.js","sources":["/home/ubuntu/workspace/node_modules/sdp/sdp.js"],"sourcesContent":[" /* eslint-env node */\n'use strict';\n\n// SDP helpers.\nvar SDPUtils = {};\n\n// Generate an alphanumeric identifier for cname or mids.\n// TODO: use UUIDs instead? https://gist.github.com/jed/982883\nSDPUtils.generateIdentifier = function() {\n  return Math.random().toString(36).substr(2, 10);\n};\n\n// The RTCP CNAME used by all peerconnections from the same JS.\nSDPUtils.localCName = SDPUtils.generateIdentifier();\n\n// Splits SDP into lines, dealing with both CRLF and LF.\nSDPUtils.splitLines = function(blob) {\n  return blob.trim().split('\\n').map(function(line) {\n    return line.trim();\n  });\n};\n// Splits SDP into sessionpart and mediasections. Ensures CRLF.\nSDPUtils.splitSections = function(blob) {\n  var parts = blob.split('\\nm=');\n  return parts.map(function(part, index) {\n    return (index > 0 ? 'm=' + part : part).trim() + '\\r\\n';\n  });\n};\n\n// Returns lines that start with a certain prefix.\nSDPUtils.matchPrefix = function(blob, prefix) {\n  return SDPUtils.splitLines(blob).filter(function(line) {\n    return line.indexOf(prefix) === 0;\n  });\n};\n\n// Parses an ICE candidate line. Sample input:\n// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8\n// rport 55996\"\nSDPUtils.parseCandidate = function(line) {\n  var parts;\n  // Parse both variants.\n  if (line.indexOf('a=candidate:') === 0) {\n    parts = line.substring(12).split(' ');\n  } else {\n    parts = line.substring(10).split(' ');\n  }\n\n  var candidate = {\n    foundation: parts[0],\n    component: parts[1],\n    protocol: parts[2].toLowerCase(),\n    priority: parseInt(parts[3], 10),\n    ip: parts[4],\n    port: parseInt(parts[5], 10),\n    // skip parts[6] == 'typ'\n    type: parts[7]\n  };\n\n  for (var i = 8; i < parts.length; i += 2) {\n    switch (parts[i]) {\n      case 'raddr':\n        candidate.relatedAddress = parts[i + 1];\n        break;\n      case 'rport':\n        candidate.relatedPort = parseInt(parts[i + 1], 10);\n        break;\n      case 'tcptype':\n        candidate.tcpType = parts[i + 1];\n        break;\n      default: // Unknown extensions are silently ignored.\n        break;\n    }\n  }\n  return candidate;\n};\n\n// Translates a candidate object into SDP candidate attribute.\nSDPUtils.writeCandidate = function(candidate) {\n  var sdp = [];\n  sdp.push(candidate.foundation);\n  sdp.push(candidate.component);\n  sdp.push(candidate.protocol.toUpperCase());\n  sdp.push(candidate.priority);\n  sdp.push(candidate.ip);\n  sdp.push(candidate.port);\n\n  var type = candidate.type;\n  sdp.push('typ');\n  sdp.push(type);\n  if (type !== 'host' && candidate.relatedAddress &&\n      candidate.relatedPort) {\n    sdp.push('raddr');\n    sdp.push(candidate.relatedAddress); // was: relAddr\n    sdp.push('rport');\n    sdp.push(candidate.relatedPort); // was: relPort\n  }\n  if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') {\n    sdp.push('tcptype');\n    sdp.push(candidate.tcpType);\n  }\n  return 'candidate:' + sdp.join(' ');\n};\n\n// Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input:\n// a=rtpmap:111 opus/48000/2\nSDPUtils.parseRtpMap = function(line) {\n  var parts = line.substr(9).split(' ');\n  var parsed = {\n    payloadType: parseInt(parts.shift(), 10) // was: id\n  };\n\n  parts = parts[0].split('/');\n\n  parsed.name = parts[0];\n  parsed.clockRate = parseInt(parts[1], 10); // was: clockrate\n  // was: channels\n  parsed.numChannels = parts.length === 3 ? parseInt(parts[2], 10) : 1;\n  return parsed;\n};\n\n// Generate an a=rtpmap line from RTCRtpCodecCapability or\n// RTCRtpCodecParameters.\nSDPUtils.writeRtpMap = function(codec) {\n  var pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate +\n      (codec.numChannels !== 1 ? '/' + codec.numChannels : '') + '\\r\\n';\n};\n\n// Parses an a=extmap line (headerextension from RFC 5285). Sample input:\n// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset\nSDPUtils.parseExtmap = function(line) {\n  var parts = line.substr(9).split(' ');\n  return {\n    id: parseInt(parts[0], 10),\n    uri: parts[1]\n  };\n};\n\n// Generates a=extmap line from RTCRtpHeaderExtensionParameters or\n// RTCRtpHeaderExtension.\nSDPUtils.writeExtmap = function(headerExtension) {\n  return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) +\n       ' ' + headerExtension.uri + '\\r\\n';\n};\n\n// Parses an ftmp line, returns dictionary. Sample input:\n// a=fmtp:96 vbr=on;cng=on\n// Also deals with vbr=on; cng=on\nSDPUtils.parseFmtp = function(line) {\n  var parsed = {};\n  var kv;\n  var parts = line.substr(line.indexOf(' ') + 1).split(';');\n  for (var j = 0; j < parts.length; j++) {\n    kv = parts[j].trim().split('=');\n    parsed[kv[0].trim()] = kv[1];\n  }\n  return parsed;\n};\n\n// Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeFmtp = function(codec) {\n  var line = '';\n  var pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  if (codec.parameters && Object.keys(codec.parameters).length) {\n    var params = [];\n    Object.keys(codec.parameters).forEach(function(param) {\n      params.push(param + '=' + codec.parameters[param]);\n    });\n    line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\\r\\n';\n  }\n  return line;\n};\n\n// Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input:\n// a=rtcp-fb:98 nack rpsi\nSDPUtils.parseRtcpFb = function(line) {\n  var parts = line.substr(line.indexOf(' ') + 1).split(' ');\n  return {\n    type: parts.shift(),\n    parameter: parts.join(' ')\n  };\n};\n// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeRtcpFb = function(codec) {\n  var lines = '';\n  var pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  if (codec.rtcpFeedback && codec.rtcpFeedback.length) {\n    // FIXME: special handling for trr-int?\n    codec.rtcpFeedback.forEach(function(fb) {\n      lines += 'a=rtcp-fb:' + pt + ' ' + fb.type +\n      (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') +\n          '\\r\\n';\n    });\n  }\n  return lines;\n};\n\n// Parses an RFC 5576 ssrc media attribute. Sample input:\n// a=ssrc:3735928559 cname:something\nSDPUtils.parseSsrcMedia = function(line) {\n  var sp = line.indexOf(' ');\n  var parts = {\n    ssrc: parseInt(line.substr(7, sp - 7), 10)\n  };\n  var colon = line.indexOf(':', sp);\n  if (colon > -1) {\n    parts.attribute = line.substr(sp + 1, colon - sp - 1);\n    parts.value = line.substr(colon + 1);\n  } else {\n    parts.attribute = line.substr(sp + 1);\n  }\n  return parts;\n};\n\n// Extracts DTLS parameters from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n//   get the fingerprint line as input. See also getIceParameters.\nSDPUtils.getDtlsParameters = function(mediaSection, sessionpart) {\n  var lines = SDPUtils.splitLines(mediaSection);\n  // Search in session part, too.\n  lines = lines.concat(SDPUtils.splitLines(sessionpart));\n  var fpLine = lines.filter(function(line) {\n    return line.indexOf('a=fingerprint:') === 0;\n  })[0].substr(14);\n  // Note: a=setup line is ignored since we use the 'auto' role.\n  var dtlsParameters = {\n    role: 'auto',\n    fingerprints: [{\n      algorithm: fpLine.split(' ')[0],\n      value: fpLine.split(' ')[1]\n    }]\n  };\n  return dtlsParameters;\n};\n\n// Serializes DTLS parameters to SDP.\nSDPUtils.writeDtlsParameters = function(params, setupType) {\n  var sdp = 'a=setup:' + setupType + '\\r\\n';\n  params.fingerprints.forEach(function(fp) {\n    sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\\r\\n';\n  });\n  return sdp;\n};\n// Parses ICE information from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n//   get the ice-ufrag and ice-pwd lines as input.\nSDPUtils.getIceParameters = function(mediaSection, sessionpart) {\n  var lines = SDPUtils.splitLines(mediaSection);\n  // Search in session part, too.\n  lines = lines.concat(SDPUtils.splitLines(sessionpart));\n  var iceParameters = {\n    usernameFragment: lines.filter(function(line) {\n      return line.indexOf('a=ice-ufrag:') === 0;\n    })[0].substr(12),\n    password: lines.filter(function(line) {\n      return line.indexOf('a=ice-pwd:') === 0;\n    })[0].substr(10)\n  };\n  return iceParameters;\n};\n\n// Serializes ICE parameters to SDP.\nSDPUtils.writeIceParameters = function(params) {\n  return 'a=ice-ufrag:' + params.usernameFragment + '\\r\\n' +\n      'a=ice-pwd:' + params.password + '\\r\\n';\n};\n\n// Parses the SDP media section and returns RTCRtpParameters.\nSDPUtils.parseRtpParameters = function(mediaSection) {\n  var description = {\n    codecs: [],\n    headerExtensions: [],\n    fecMechanisms: [],\n    rtcp: []\n  };\n  var lines = SDPUtils.splitLines(mediaSection);\n  var mline = lines[0].split(' ');\n  for (var i = 3; i < mline.length; i++) { // find all codecs from mline[3..]\n    var pt = mline[i];\n    var rtpmapline = SDPUtils.matchPrefix(\n        mediaSection, 'a=rtpmap:' + pt + ' ')[0];\n    if (rtpmapline) {\n      var codec = SDPUtils.parseRtpMap(rtpmapline);\n      var fmtps = SDPUtils.matchPrefix(\n          mediaSection, 'a=fmtp:' + pt + ' ');\n      // Only the first a=fmtp:<pt> is considered.\n      codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};\n      codec.rtcpFeedback = SDPUtils.matchPrefix(\n          mediaSection, 'a=rtcp-fb:' + pt + ' ')\n        .map(SDPUtils.parseRtcpFb);\n      description.codecs.push(codec);\n      // parse FEC mechanisms from rtpmap lines.\n      switch (codec.name.toUpperCase()) {\n        case 'RED':\n        case 'ULPFEC':\n          description.fecMechanisms.push(codec.name.toUpperCase());\n          break;\n        default: // only RED and ULPFEC are recognized as FEC mechanisms.\n          break;\n      }\n    }\n  }\n  SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function(line) {\n    description.headerExtensions.push(SDPUtils.parseExtmap(line));\n  });\n  // FIXME: parse rtcp.\n  return description;\n};\n\n// Generates parts of the SDP media section describing the capabilities /\n// parameters.\nSDPUtils.writeRtpDescription = function(kind, caps) {\n  var sdp = '';\n\n  // Build the mline.\n  sdp += 'm=' + kind + ' ';\n  sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs.\n  sdp += ' UDP/TLS/RTP/SAVPF ';\n  sdp += caps.codecs.map(function(codec) {\n    if (codec.preferredPayloadType !== undefined) {\n      return codec.preferredPayloadType;\n    }\n    return codec.payloadType;\n  }).join(' ') + '\\r\\n';\n\n  sdp += 'c=IN IP4 0.0.0.0\\r\\n';\n  sdp += 'a=rtcp:9 IN IP4 0.0.0.0\\r\\n';\n\n  // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb.\n  caps.codecs.forEach(function(codec) {\n    sdp += SDPUtils.writeRtpMap(codec);\n    sdp += SDPUtils.writeFmtp(codec);\n    sdp += SDPUtils.writeRtcpFb(codec);\n  });\n  sdp += 'a=rtcp-mux\\r\\n';\n\n  caps.headerExtensions.forEach(function(extension) {\n    sdp += SDPUtils.writeExtmap(extension);\n  });\n  // FIXME: write fecMechanisms.\n  return sdp;\n};\n\n// Parses the SDP media section and returns an array of\n// RTCRtpEncodingParameters.\nSDPUtils.parseRtpEncodingParameters = function(mediaSection) {\n  var encodingParameters = [];\n  var description = SDPUtils.parseRtpParameters(mediaSection);\n  var hasRed = description.fecMechanisms.indexOf('RED') !== -1;\n  var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1;\n\n  // filter a=ssrc:... cname:, ignore PlanB-msid\n  var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n  .map(function(line) {\n    return SDPUtils.parseSsrcMedia(line);\n  })\n  .filter(function(parts) {\n    return parts.attribute === 'cname';\n  });\n  var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc;\n  var secondarySsrc;\n\n  var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID')\n  .map(function(line) {\n    var parts = line.split(' ');\n    parts.shift();\n    return parts.map(function(part) {\n      return parseInt(part, 10);\n    });\n  });\n  if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) {\n    secondarySsrc = flows[0][1];\n  }\n\n  description.codecs.forEach(function(codec) {\n    if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) {\n      var encParam = {\n        ssrc: primarySsrc,\n        codecPayloadType: parseInt(codec.parameters.apt, 10),\n        rtx: {\n          payloadType: codec.payloadType,\n          ssrc: secondarySsrc\n        }\n      };\n      encodingParameters.push(encParam);\n      if (hasRed) {\n        encParam = JSON.parse(JSON.stringify(encParam));\n        encParam.fec = {\n          ssrc: secondarySsrc,\n          mechanism: hasUlpfec ? 'red+ulpfec' : 'red'\n        };\n        encodingParameters.push(encParam);\n      }\n    }\n  });\n  if (encodingParameters.length === 0 && primarySsrc) {\n    encodingParameters.push({\n      ssrc: primarySsrc\n    });\n  }\n\n  // we support both b=AS and b=TIAS but interpret AS as TIAS.\n  var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b=');\n  if (bandwidth.length) {\n    if (bandwidth[0].indexOf('b=TIAS:') === 0) {\n      bandwidth = parseInt(bandwidth[0].substr(7), 10);\n    } else if (bandwidth[0].indexOf('b=AS:') === 0) {\n      bandwidth = parseInt(bandwidth[0].substr(5), 10);\n    }\n    encodingParameters.forEach(function(params) {\n      params.maxBitrate = bandwidth;\n    });\n  }\n  return encodingParameters;\n};\n\nSDPUtils.writeSessionBoilerplate = function() {\n  // FIXME: sess-id should be an NTP timestamp.\n  return 'v=0\\r\\n' +\n      'o=thisisadapterortc 8169639915646943137 2 IN IP4 127.0.0.1\\r\\n' +\n      's=-\\r\\n' +\n      't=0 0\\r\\n';\n};\n\nSDPUtils.writeMediaSection = function(transceiver, caps, type, stream) {\n  var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);\n\n  // Map ICE parameters (ufrag, pwd) to SDP.\n  sdp += SDPUtils.writeIceParameters(\n      transceiver.iceGatherer.getLocalParameters());\n\n  // Map DTLS parameters to SDP.\n  sdp += SDPUtils.writeDtlsParameters(\n      transceiver.dtlsTransport.getLocalParameters(),\n      type === 'offer' ? 'actpass' : 'active');\n\n  sdp += 'a=mid:' + transceiver.mid + '\\r\\n';\n\n  if (transceiver.rtpSender && transceiver.rtpReceiver) {\n    sdp += 'a=sendrecv\\r\\n';\n  } else if (transceiver.rtpSender) {\n    sdp += 'a=sendonly\\r\\n';\n  } else if (transceiver.rtpReceiver) {\n    sdp += 'a=recvonly\\r\\n';\n  } else {\n    sdp += 'a=inactive\\r\\n';\n  }\n\n  // FIXME: for RTX there might be multiple SSRCs. Not implemented in Edge yet.\n  if (transceiver.rtpSender) {\n    var msid = 'msid:' + stream.id + ' ' +\n        transceiver.rtpSender.track.id + '\\r\\n';\n    sdp += 'a=' + msid;\n    sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n        ' ' + msid;\n  }\n  // FIXME: this should be written by writeRtpDescription.\n  sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n      ' cname:' + SDPUtils.localCName + '\\r\\n';\n  return sdp;\n};\n\n// Gets the direction from the mediaSection or the sessionpart.\nSDPUtils.getDirection = function(mediaSection, sessionpart) {\n  // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv.\n  var lines = SDPUtils.splitLines(mediaSection);\n  for (var i = 0; i < lines.length; i++) {\n    switch (lines[i]) {\n      case 'a=sendrecv':\n      case 'a=sendonly':\n      case 'a=recvonly':\n      case 'a=inactive':\n        return lines[i].substr(2);\n      default:\n        // FIXME: What should happen here?\n    }\n  }\n  if (sessionpart) {\n    return SDPUtils.getDirection(sessionpart);\n  }\n  return 'sendrecv';\n};\n\n// Expose public methods.\nmodule.exports = SDPUtils;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/sdp/sdp.js\n// module id = 452\n// module chunks = 0"],"mappings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sourceRoot":""}");
Severity: Minor
Found in app/assets/javascripts/metamaps.secret.bundle.js by fixme

FIXME found
Open

    eval(" /* eslint-env node */\n'use strict';\n\n// SDP helpers.\nvar SDPUtils = {};\n\n// Generate an alphanumeric identifier for cname or mids.\n// TODO: use UUIDs instead? https://gist.github.com/jed/982883\nSDPUtils.generateIdentifier = function() {\n  return Math.random().toString(36).substr(2, 10);\n};\n\n// The RTCP CNAME used by all peerconnections from the same JS.\nSDPUtils.localCName = SDPUtils.generateIdentifier();\n\n// Splits SDP into lines, dealing with both CRLF and LF.\nSDPUtils.splitLines = function(blob) {\n  return blob.trim().split('\\n').map(function(line) {\n    return line.trim();\n  });\n};\n// Splits SDP into sessionpart and mediasections. Ensures CRLF.\nSDPUtils.splitSections = function(blob) {\n  var parts = blob.split('\\nm=');\n  return parts.map(function(part, index) {\n    return (index > 0 ? 'm=' + part : part).trim() + '\\r\\n';\n  });\n};\n\n// Returns lines that start with a certain prefix.\nSDPUtils.matchPrefix = function(blob, prefix) {\n  return SDPUtils.splitLines(blob).filter(function(line) {\n    return line.indexOf(prefix) === 0;\n  });\n};\n\n// Parses an ICE candidate line. Sample input:\n// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8\n// rport 55996\"\nSDPUtils.parseCandidate = function(line) {\n  var parts;\n  // Parse both variants.\n  if (line.indexOf('a=candidate:') === 0) {\n    parts = line.substring(12).split(' ');\n  } else {\n    parts = line.substring(10).split(' ');\n  }\n\n  var candidate = {\n    foundation: parts[0],\n    component: parts[1],\n    protocol: parts[2].toLowerCase(),\n    priority: parseInt(parts[3], 10),\n    ip: parts[4],\n    port: parseInt(parts[5], 10),\n    // skip parts[6] == 'typ'\n    type: parts[7]\n  };\n\n  for (var i = 8; i < parts.length; i += 2) {\n    switch (parts[i]) {\n      case 'raddr':\n        candidate.relatedAddress = parts[i + 1];\n        break;\n      case 'rport':\n        candidate.relatedPort = parseInt(parts[i + 1], 10);\n        break;\n      case 'tcptype':\n        candidate.tcpType = parts[i + 1];\n        break;\n      default: // Unknown extensions are silently ignored.\n        break;\n    }\n  }\n  return candidate;\n};\n\n// Translates a candidate object into SDP candidate attribute.\nSDPUtils.writeCandidate = function(candidate) {\n  var sdp = [];\n  sdp.push(candidate.foundation);\n  sdp.push(candidate.component);\n  sdp.push(candidate.protocol.toUpperCase());\n  sdp.push(candidate.priority);\n  sdp.push(candidate.ip);\n  sdp.push(candidate.port);\n\n  var type = candidate.type;\n  sdp.push('typ');\n  sdp.push(type);\n  if (type !== 'host' && candidate.relatedAddress &&\n      candidate.relatedPort) {\n    sdp.push('raddr');\n    sdp.push(candidate.relatedAddress); // was: relAddr\n    sdp.push('rport');\n    sdp.push(candidate.relatedPort); // was: relPort\n  }\n  if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') {\n    sdp.push('tcptype');\n    sdp.push(candidate.tcpType);\n  }\n  return 'candidate:' + sdp.join(' ');\n};\n\n// Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input:\n// a=rtpmap:111 opus/48000/2\nSDPUtils.parseRtpMap = function(line) {\n  var parts = line.substr(9).split(' ');\n  var parsed = {\n    payloadType: parseInt(parts.shift(), 10) // was: id\n  };\n\n  parts = parts[0].split('/');\n\n  parsed.name = parts[0];\n  parsed.clockRate = parseInt(parts[1], 10); // was: clockrate\n  // was: channels\n  parsed.numChannels = parts.length === 3 ? parseInt(parts[2], 10) : 1;\n  return parsed;\n};\n\n// Generate an a=rtpmap line from RTCRtpCodecCapability or\n// RTCRtpCodecParameters.\nSDPUtils.writeRtpMap = function(codec) {\n  var pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate +\n      (codec.numChannels !== 1 ? '/' + codec.numChannels : '') + '\\r\\n';\n};\n\n// Parses an a=extmap line (headerextension from RFC 5285). Sample input:\n// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset\nSDPUtils.parseExtmap = function(line) {\n  var parts = line.substr(9).split(' ');\n  return {\n    id: parseInt(parts[0], 10),\n    uri: parts[1]\n  };\n};\n\n// Generates a=extmap line from RTCRtpHeaderExtensionParameters or\n// RTCRtpHeaderExtension.\nSDPUtils.writeExtmap = function(headerExtension) {\n  return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) +\n       ' ' + headerExtension.uri + '\\r\\n';\n};\n\n// Parses an ftmp line, returns dictionary. Sample input:\n// a=fmtp:96 vbr=on;cng=on\n// Also deals with vbr=on; cng=on\nSDPUtils.parseFmtp = function(line) {\n  var parsed = {};\n  var kv;\n  var parts = line.substr(line.indexOf(' ') + 1).split(';');\n  for (var j = 0; j < parts.length; j++) {\n    kv = parts[j].trim().split('=');\n    parsed[kv[0].trim()] = kv[1];\n  }\n  return parsed;\n};\n\n// Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeFmtp = function(codec) {\n  var line = '';\n  var pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  if (codec.parameters && Object.keys(codec.parameters).length) {\n    var params = [];\n    Object.keys(codec.parameters).forEach(function(param) {\n      params.push(param + '=' + codec.parameters[param]);\n    });\n    line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\\r\\n';\n  }\n  return line;\n};\n\n// Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input:\n// a=rtcp-fb:98 nack rpsi\nSDPUtils.parseRtcpFb = function(line) {\n  var parts = line.substr(line.indexOf(' ') + 1).split(' ');\n  return {\n    type: parts.shift(),\n    parameter: parts.join(' ')\n  };\n};\n// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeRtcpFb = function(codec) {\n  var lines = '';\n  var pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  if (codec.rtcpFeedback && codec.rtcpFeedback.length) {\n    // FIXME: special handling for trr-int?\n    codec.rtcpFeedback.forEach(function(fb) {\n      lines += 'a=rtcp-fb:' + pt + ' ' + fb.type +\n      (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') +\n          '\\r\\n';\n    });\n  }\n  return lines;\n};\n\n// Parses an RFC 5576 ssrc media attribute. Sample input:\n// a=ssrc:3735928559 cname:something\nSDPUtils.parseSsrcMedia = function(line) {\n  var sp = line.indexOf(' ');\n  var parts = {\n    ssrc: parseInt(line.substr(7, sp - 7), 10)\n  };\n  var colon = line.indexOf(':', sp);\n  if (colon > -1) {\n    parts.attribute = line.substr(sp + 1, colon - sp - 1);\n    parts.value = line.substr(colon + 1);\n  } else {\n    parts.attribute = line.substr(sp + 1);\n  }\n  return parts;\n};\n\n// Extracts DTLS parameters from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n//   get the fingerprint line as input. See also getIceParameters.\nSDPUtils.getDtlsParameters = function(mediaSection, sessionpart) {\n  var lines = SDPUtils.splitLines(mediaSection);\n  // Search in session part, too.\n  lines = lines.concat(SDPUtils.splitLines(sessionpart));\n  var fpLine = lines.filter(function(line) {\n    return line.indexOf('a=fingerprint:') === 0;\n  })[0].substr(14);\n  // Note: a=setup line is ignored since we use the 'auto' role.\n  var dtlsParameters = {\n    role: 'auto',\n    fingerprints: [{\n      algorithm: fpLine.split(' ')[0],\n      value: fpLine.split(' ')[1]\n    }]\n  };\n  return dtlsParameters;\n};\n\n// Serializes DTLS parameters to SDP.\nSDPUtils.writeDtlsParameters = function(params, setupType) {\n  var sdp = 'a=setup:' + setupType + '\\r\\n';\n  params.fingerprints.forEach(function(fp) {\n    sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\\r\\n';\n  });\n  return sdp;\n};\n// Parses ICE information from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n//   get the ice-ufrag and ice-pwd lines as input.\nSDPUtils.getIceParameters = function(mediaSection, sessionpart) {\n  var lines = SDPUtils.splitLines(mediaSection);\n  // Search in session part, too.\n  lines = lines.concat(SDPUtils.splitLines(sessionpart));\n  var iceParameters = {\n    usernameFragment: lines.filter(function(line) {\n      return line.indexOf('a=ice-ufrag:') === 0;\n    })[0].substr(12),\n    password: lines.filter(function(line) {\n      return line.indexOf('a=ice-pwd:') === 0;\n    })[0].substr(10)\n  };\n  return iceParameters;\n};\n\n// Serializes ICE parameters to SDP.\nSDPUtils.writeIceParameters = function(params) {\n  return 'a=ice-ufrag:' + params.usernameFragment + '\\r\\n' +\n      'a=ice-pwd:' + params.password + '\\r\\n';\n};\n\n// Parses the SDP media section and returns RTCRtpParameters.\nSDPUtils.parseRtpParameters = function(mediaSection) {\n  var description = {\n    codecs: [],\n    headerExtensions: [],\n    fecMechanisms: [],\n    rtcp: []\n  };\n  var lines = SDPUtils.splitLines(mediaSection);\n  var mline = lines[0].split(' ');\n  for (var i = 3; i < mline.length; i++) { // find all codecs from mline[3..]\n    var pt = mline[i];\n    var rtpmapline = SDPUtils.matchPrefix(\n        mediaSection, 'a=rtpmap:' + pt + ' ')[0];\n    if (rtpmapline) {\n      var codec = SDPUtils.parseRtpMap(rtpmapline);\n      var fmtps = SDPUtils.matchPrefix(\n          mediaSection, 'a=fmtp:' + pt + ' ');\n      // Only the first a=fmtp:<pt> is considered.\n      codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};\n      codec.rtcpFeedback = SDPUtils.matchPrefix(\n          mediaSection, 'a=rtcp-fb:' + pt + ' ')\n        .map(SDPUtils.parseRtcpFb);\n      description.codecs.push(codec);\n      // parse FEC mechanisms from rtpmap lines.\n      switch (codec.name.toUpperCase()) {\n        case 'RED':\n        case 'ULPFEC':\n          description.fecMechanisms.push(codec.name.toUpperCase());\n          break;\n        default: // only RED and ULPFEC are recognized as FEC mechanisms.\n          break;\n      }\n    }\n  }\n  SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function(line) {\n    description.headerExtensions.push(SDPUtils.parseExtmap(line));\n  });\n  // FIXME: parse rtcp.\n  return description;\n};\n\n// Generates parts of the SDP media section describing the capabilities /\n// parameters.\nSDPUtils.writeRtpDescription = function(kind, caps) {\n  var sdp = '';\n\n  // Build the mline.\n  sdp += 'm=' + kind + ' ';\n  sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs.\n  sdp += ' UDP/TLS/RTP/SAVPF ';\n  sdp += caps.codecs.map(function(codec) {\n    if (codec.preferredPayloadType !== undefined) {\n      return codec.preferredPayloadType;\n    }\n    return codec.payloadType;\n  }).join(' ') + '\\r\\n';\n\n  sdp += 'c=IN IP4 0.0.0.0\\r\\n';\n  sdp += 'a=rtcp:9 IN IP4 0.0.0.0\\r\\n';\n\n  // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb.\n  caps.codecs.forEach(function(codec) {\n    sdp += SDPUtils.writeRtpMap(codec);\n    sdp += SDPUtils.writeFmtp(codec);\n    sdp += SDPUtils.writeRtcpFb(codec);\n  });\n  sdp += 'a=rtcp-mux\\r\\n';\n\n  caps.headerExtensions.forEach(function(extension) {\n    sdp += SDPUtils.writeExtmap(extension);\n  });\n  // FIXME: write fecMechanisms.\n  return sdp;\n};\n\n// Parses the SDP media section and returns an array of\n// RTCRtpEncodingParameters.\nSDPUtils.parseRtpEncodingParameters = function(mediaSection) {\n  var encodingParameters = [];\n  var description = SDPUtils.parseRtpParameters(mediaSection);\n  var hasRed = description.fecMechanisms.indexOf('RED') !== -1;\n  var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1;\n\n  // filter a=ssrc:... cname:, ignore PlanB-msid\n  var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n  .map(function(line) {\n    return SDPUtils.parseSsrcMedia(line);\n  })\n  .filter(function(parts) {\n    return parts.attribute === 'cname';\n  });\n  var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc;\n  var secondarySsrc;\n\n  var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID')\n  .map(function(line) {\n    var parts = line.split(' ');\n    parts.shift();\n    return parts.map(function(part) {\n      return parseInt(part, 10);\n    });\n  });\n  if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) {\n    secondarySsrc = flows[0][1];\n  }\n\n  description.codecs.forEach(function(codec) {\n    if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) {\n      var encParam = {\n        ssrc: primarySsrc,\n        codecPayloadType: parseInt(codec.parameters.apt, 10),\n        rtx: {\n          payloadType: codec.payloadType,\n          ssrc: secondarySsrc\n        }\n      };\n      encodingParameters.push(encParam);\n      if (hasRed) {\n        encParam = JSON.parse(JSON.stringify(encParam));\n        encParam.fec = {\n          ssrc: secondarySsrc,\n          mechanism: hasUlpfec ? 'red+ulpfec' : 'red'\n        };\n        encodingParameters.push(encParam);\n      }\n    }\n  });\n  if (encodingParameters.length === 0 && primarySsrc) {\n    encodingParameters.push({\n      ssrc: primarySsrc\n    });\n  }\n\n  // we support both b=AS and b=TIAS but interpret AS as TIAS.\n  var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b=');\n  if (bandwidth.length) {\n    if (bandwidth[0].indexOf('b=TIAS:') === 0) {\n      bandwidth = parseInt(bandwidth[0].substr(7), 10);\n    } else if (bandwidth[0].indexOf('b=AS:') === 0) {\n      bandwidth = parseInt(bandwidth[0].substr(5), 10);\n    }\n    encodingParameters.forEach(function(params) {\n      params.maxBitrate = bandwidth;\n    });\n  }\n  return encodingParameters;\n};\n\nSDPUtils.writeSessionBoilerplate = function() {\n  // FIXME: sess-id should be an NTP timestamp.\n  return 'v=0\\r\\n' +\n      'o=thisisadapterortc 8169639915646943137 2 IN IP4 127.0.0.1\\r\\n' +\n      's=-\\r\\n' +\n      't=0 0\\r\\n';\n};\n\nSDPUtils.writeMediaSection = function(transceiver, caps, type, stream) {\n  var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);\n\n  // Map ICE parameters (ufrag, pwd) to SDP.\n  sdp += SDPUtils.writeIceParameters(\n      transceiver.iceGatherer.getLocalParameters());\n\n  // Map DTLS parameters to SDP.\n  sdp += SDPUtils.writeDtlsParameters(\n      transceiver.dtlsTransport.getLocalParameters(),\n      type === 'offer' ? 'actpass' : 'active');\n\n  sdp += 'a=mid:' + transceiver.mid + '\\r\\n';\n\n  if (transceiver.rtpSender && transceiver.rtpReceiver) {\n    sdp += 'a=sendrecv\\r\\n';\n  } else if (transceiver.rtpSender) {\n    sdp += 'a=sendonly\\r\\n';\n  } else if (transceiver.rtpReceiver) {\n    sdp += 'a=recvonly\\r\\n';\n  } else {\n    sdp += 'a=inactive\\r\\n';\n  }\n\n  // FIXME: for RTX there might be multiple SSRCs. Not implemented in Edge yet.\n  if (transceiver.rtpSender) {\n    var msid = 'msid:' + stream.id + ' ' +\n        transceiver.rtpSender.track.id + '\\r\\n';\n    sdp += 'a=' + msid;\n    sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n        ' ' + msid;\n  }\n  // FIXME: this should be written by writeRtpDescription.\n  sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n      ' cname:' + SDPUtils.localCName + '\\r\\n';\n  return sdp;\n};\n\n// Gets the direction from the mediaSection or the sessionpart.\nSDPUtils.getDirection = function(mediaSection, sessionpart) {\n  // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv.\n  var lines = SDPUtils.splitLines(mediaSection);\n  for (var i = 0; i < lines.length; i++) {\n    switch (lines[i]) {\n      case 'a=sendrecv':\n      case 'a=sendonly':\n      case 'a=recvonly':\n      case 'a=inactive':\n        return lines[i].substr(2);\n      default:\n        // FIXME: What should happen here?\n    }\n  }\n  if (sessionpart) {\n    return SDPUtils.getDirection(sessionpart);\n  }\n  return 'sendrecv';\n};\n\n// Expose public methods.\nmodule.exports = SDPUtils;\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"452.js","sources":["/home/ubuntu/workspace/node_modules/sdp/sdp.js"],"sourcesContent":[" /* eslint-env node */\n'use strict';\n\n// SDP helpers.\nvar SDPUtils = {};\n\n// Generate an alphanumeric identifier for cname or mids.\n// TODO: use UUIDs instead? https://gist.github.com/jed/982883\nSDPUtils.generateIdentifier = function() {\n  return Math.random().toString(36).substr(2, 10);\n};\n\n// The RTCP CNAME used by all peerconnections from the same JS.\nSDPUtils.localCName = SDPUtils.generateIdentifier();\n\n// Splits SDP into lines, dealing with both CRLF and LF.\nSDPUtils.splitLines = function(blob) {\n  return blob.trim().split('\\n').map(function(line) {\n    return line.trim();\n  });\n};\n// Splits SDP into sessionpart and mediasections. Ensures CRLF.\nSDPUtils.splitSections = function(blob) {\n  var parts = blob.split('\\nm=');\n  return parts.map(function(part, index) {\n    return (index > 0 ? 'm=' + part : part).trim() + '\\r\\n';\n  });\n};\n\n// Returns lines that start with a certain prefix.\nSDPUtils.matchPrefix = function(blob, prefix) {\n  return SDPUtils.splitLines(blob).filter(function(line) {\n    return line.indexOf(prefix) === 0;\n  });\n};\n\n// Parses an ICE candidate line. Sample input:\n// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8\n// rport 55996\"\nSDPUtils.parseCandidate = function(line) {\n  var parts;\n  // Parse both variants.\n  if (line.indexOf('a=candidate:') === 0) {\n    parts = line.substring(12).split(' ');\n  } else {\n    parts = line.substring(10).split(' ');\n  }\n\n  var candidate = {\n    foundation: parts[0],\n    component: parts[1],\n    protocol: parts[2].toLowerCase(),\n    priority: parseInt(parts[3], 10),\n    ip: parts[4],\n    port: parseInt(parts[5], 10),\n    // skip parts[6] == 'typ'\n    type: parts[7]\n  };\n\n  for (var i = 8; i < parts.length; i += 2) {\n    switch (parts[i]) {\n      case 'raddr':\n        candidate.relatedAddress = parts[i + 1];\n        break;\n      case 'rport':\n        candidate.relatedPort = parseInt(parts[i + 1], 10);\n        break;\n      case 'tcptype':\n        candidate.tcpType = parts[i + 1];\n        break;\n      default: // Unknown extensions are silently ignored.\n        break;\n    }\n  }\n  return candidate;\n};\n\n// Translates a candidate object into SDP candidate attribute.\nSDPUtils.writeCandidate = function(candidate) {\n  var sdp = [];\n  sdp.push(candidate.foundation);\n  sdp.push(candidate.component);\n  sdp.push(candidate.protocol.toUpperCase());\n  sdp.push(candidate.priority);\n  sdp.push(candidate.ip);\n  sdp.push(candidate.port);\n\n  var type = candidate.type;\n  sdp.push('typ');\n  sdp.push(type);\n  if (type !== 'host' && candidate.relatedAddress &&\n      candidate.relatedPort) {\n    sdp.push('raddr');\n    sdp.push(candidate.relatedAddress); // was: relAddr\n    sdp.push('rport');\n    sdp.push(candidate.relatedPort); // was: relPort\n  }\n  if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') {\n    sdp.push('tcptype');\n    sdp.push(candidate.tcpType);\n  }\n  return 'candidate:' + sdp.join(' ');\n};\n\n// Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input:\n// a=rtpmap:111 opus/48000/2\nSDPUtils.parseRtpMap = function(line) {\n  var parts = line.substr(9).split(' ');\n  var parsed = {\n    payloadType: parseInt(parts.shift(), 10) // was: id\n  };\n\n  parts = parts[0].split('/');\n\n  parsed.name = parts[0];\n  parsed.clockRate = parseInt(parts[1], 10); // was: clockrate\n  // was: channels\n  parsed.numChannels = parts.length === 3 ? parseInt(parts[2], 10) : 1;\n  return parsed;\n};\n\n// Generate an a=rtpmap line from RTCRtpCodecCapability or\n// RTCRtpCodecParameters.\nSDPUtils.writeRtpMap = function(codec) {\n  var pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate +\n      (codec.numChannels !== 1 ? '/' + codec.numChannels : '') + '\\r\\n';\n};\n\n// Parses an a=extmap line (headerextension from RFC 5285). Sample input:\n// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset\nSDPUtils.parseExtmap = function(line) {\n  var parts = line.substr(9).split(' ');\n  return {\n    id: parseInt(parts[0], 10),\n    uri: parts[1]\n  };\n};\n\n// Generates a=extmap line from RTCRtpHeaderExtensionParameters or\n// RTCRtpHeaderExtension.\nSDPUtils.writeExtmap = function(headerExtension) {\n  return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) +\n       ' ' + headerExtension.uri + '\\r\\n';\n};\n\n// Parses an ftmp line, returns dictionary. Sample input:\n// a=fmtp:96 vbr=on;cng=on\n// Also deals with vbr=on; cng=on\nSDPUtils.parseFmtp = function(line) {\n  var parsed = {};\n  var kv;\n  var parts = line.substr(line.indexOf(' ') + 1).split(';');\n  for (var j = 0; j < parts.length; j++) {\n    kv = parts[j].trim().split('=');\n    parsed[kv[0].trim()] = kv[1];\n  }\n  return parsed;\n};\n\n// Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeFmtp = function(codec) {\n  var line = '';\n  var pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  if (codec.parameters && Object.keys(codec.parameters).length) {\n    var params = [];\n    Object.keys(codec.parameters).forEach(function(param) {\n      params.push(param + '=' + codec.parameters[param]);\n    });\n    line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\\r\\n';\n  }\n  return line;\n};\n\n// Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input:\n// a=rtcp-fb:98 nack rpsi\nSDPUtils.parseRtcpFb = function(line) {\n  var parts = line.substr(line.indexOf(' ') + 1).split(' ');\n  return {\n    type: parts.shift(),\n    parameter: parts.join(' ')\n  };\n};\n// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeRtcpFb = function(codec) {\n  var lines = '';\n  var pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  if (codec.rtcpFeedback && codec.rtcpFeedback.length) {\n    // FIXME: special handling for trr-int?\n    codec.rtcpFeedback.forEach(function(fb) {\n      lines += 'a=rtcp-fb:' + pt + ' ' + fb.type +\n      (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') +\n          '\\r\\n';\n    });\n  }\n  return lines;\n};\n\n// Parses an RFC 5576 ssrc media attribute. Sample input:\n// a=ssrc:3735928559 cname:something\nSDPUtils.parseSsrcMedia = function(line) {\n  var sp = line.indexOf(' ');\n  var parts = {\n    ssrc: parseInt(line.substr(7, sp - 7), 10)\n  };\n  var colon = line.indexOf(':', sp);\n  if (colon > -1) {\n    parts.attribute = line.substr(sp + 1, colon - sp - 1);\n    parts.value = line.substr(colon + 1);\n  } else {\n    parts.attribute = line.substr(sp + 1);\n  }\n  return parts;\n};\n\n// Extracts DTLS parameters from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n//   get the fingerprint line as input. See also getIceParameters.\nSDPUtils.getDtlsParameters = function(mediaSection, sessionpart) {\n  var lines = SDPUtils.splitLines(mediaSection);\n  // Search in session part, too.\n  lines = lines.concat(SDPUtils.splitLines(sessionpart));\n  var fpLine = lines.filter(function(line) {\n    return line.indexOf('a=fingerprint:') === 0;\n  })[0].substr(14);\n  // Note: a=setup line is ignored since we use the 'auto' role.\n  var dtlsParameters = {\n    role: 'auto',\n    fingerprints: [{\n      algorithm: fpLine.split(' ')[0],\n      value: fpLine.split(' ')[1]\n    }]\n  };\n  return dtlsParameters;\n};\n\n// Serializes DTLS parameters to SDP.\nSDPUtils.writeDtlsParameters = function(params, setupType) {\n  var sdp = 'a=setup:' + setupType + '\\r\\n';\n  params.fingerprints.forEach(function(fp) {\n    sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\\r\\n';\n  });\n  return sdp;\n};\n// Parses ICE information from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n//   get the ice-ufrag and ice-pwd lines as input.\nSDPUtils.getIceParameters = function(mediaSection, sessionpart) {\n  var lines = SDPUtils.splitLines(mediaSection);\n  // Search in session part, too.\n  lines = lines.concat(SDPUtils.splitLines(sessionpart));\n  var iceParameters = {\n    usernameFragment: lines.filter(function(line) {\n      return line.indexOf('a=ice-ufrag:') === 0;\n    })[0].substr(12),\n    password: lines.filter(function(line) {\n      return line.indexOf('a=ice-pwd:') === 0;\n    })[0].substr(10)\n  };\n  return iceParameters;\n};\n\n// Serializes ICE parameters to SDP.\nSDPUtils.writeIceParameters = function(params) {\n  return 'a=ice-ufrag:' + params.usernameFragment + '\\r\\n' +\n      'a=ice-pwd:' + params.password + '\\r\\n';\n};\n\n// Parses the SDP media section and returns RTCRtpParameters.\nSDPUtils.parseRtpParameters = function(mediaSection) {\n  var description = {\n    codecs: [],\n    headerExtensions: [],\n    fecMechanisms: [],\n    rtcp: []\n  };\n  var lines = SDPUtils.splitLines(mediaSection);\n  var mline = lines[0].split(' ');\n  for (var i = 3; i < mline.length; i++) { // find all codecs from mline[3..]\n    var pt = mline[i];\n    var rtpmapline = SDPUtils.matchPrefix(\n        mediaSection, 'a=rtpmap:' + pt + ' ')[0];\n    if (rtpmapline) {\n      var codec = SDPUtils.parseRtpMap(rtpmapline);\n      var fmtps = SDPUtils.matchPrefix(\n          mediaSection, 'a=fmtp:' + pt + ' ');\n      // Only the first a=fmtp:<pt> is considered.\n      codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};\n      codec.rtcpFeedback = SDPUtils.matchPrefix(\n          mediaSection, 'a=rtcp-fb:' + pt + ' ')\n        .map(SDPUtils.parseRtcpFb);\n      description.codecs.push(codec);\n      // parse FEC mechanisms from rtpmap lines.\n      switch (codec.name.toUpperCase()) {\n        case 'RED':\n        case 'ULPFEC':\n          description.fecMechanisms.push(codec.name.toUpperCase());\n          break;\n        default: // only RED and ULPFEC are recognized as FEC mechanisms.\n          break;\n      }\n    }\n  }\n  SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function(line) {\n    description.headerExtensions.push(SDPUtils.parseExtmap(line));\n  });\n  // FIXME: parse rtcp.\n  return description;\n};\n\n// Generates parts of the SDP media section describing the capabilities /\n// parameters.\nSDPUtils.writeRtpDescription = function(kind, caps) {\n  var sdp = '';\n\n  // Build the mline.\n  sdp += 'm=' + kind + ' ';\n  sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs.\n  sdp += ' UDP/TLS/RTP/SAVPF ';\n  sdp += caps.codecs.map(function(codec) {\n    if (codec.preferredPayloadType !== undefined) {\n      return codec.preferredPayloadType;\n    }\n    return codec.payloadType;\n  }).join(' ') + '\\r\\n';\n\n  sdp += 'c=IN IP4 0.0.0.0\\r\\n';\n  sdp += 'a=rtcp:9 IN IP4 0.0.0.0\\r\\n';\n\n  // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb.\n  caps.codecs.forEach(function(codec) {\n    sdp += SDPUtils.writeRtpMap(codec);\n    sdp += SDPUtils.writeFmtp(codec);\n    sdp += SDPUtils.writeRtcpFb(codec);\n  });\n  sdp += 'a=rtcp-mux\\r\\n';\n\n  caps.headerExtensions.forEach(function(extension) {\n    sdp += SDPUtils.writeExtmap(extension);\n  });\n  // FIXME: write fecMechanisms.\n  return sdp;\n};\n\n// Parses the SDP media section and returns an array of\n// RTCRtpEncodingParameters.\nSDPUtils.parseRtpEncodingParameters = function(mediaSection) {\n  var encodingParameters = [];\n  var description = SDPUtils.parseRtpParameters(mediaSection);\n  var hasRed = description.fecMechanisms.indexOf('RED') !== -1;\n  var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1;\n\n  // filter a=ssrc:... cname:, ignore PlanB-msid\n  var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n  .map(function(line) {\n    return SDPUtils.parseSsrcMedia(line);\n  })\n  .filter(function(parts) {\n    return parts.attribute === 'cname';\n  });\n  var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc;\n  var secondarySsrc;\n\n  var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID')\n  .map(function(line) {\n    var parts = line.split(' ');\n    parts.shift();\n    return parts.map(function(part) {\n      return parseInt(part, 10);\n    });\n  });\n  if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) {\n    secondarySsrc = flows[0][1];\n  }\n\n  description.codecs.forEach(function(codec) {\n    if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) {\n      var encParam = {\n        ssrc: primarySsrc,\n        codecPayloadType: parseInt(codec.parameters.apt, 10),\n        rtx: {\n          payloadType: codec.payloadType,\n          ssrc: secondarySsrc\n        }\n      };\n      encodingParameters.push(encParam);\n      if (hasRed) {\n        encParam = JSON.parse(JSON.stringify(encParam));\n        encParam.fec = {\n          ssrc: secondarySsrc,\n          mechanism: hasUlpfec ? 'red+ulpfec' : 'red'\n        };\n        encodingParameters.push(encParam);\n      }\n    }\n  });\n  if (encodingParameters.length === 0 && primarySsrc) {\n    encodingParameters.push({\n      ssrc: primarySsrc\n    });\n  }\n\n  // we support both b=AS and b=TIAS but interpret AS as TIAS.\n  var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b=');\n  if (bandwidth.length) {\n    if (bandwidth[0].indexOf('b=TIAS:') === 0) {\n      bandwidth = parseInt(bandwidth[0].substr(7), 10);\n    } else if (bandwidth[0].indexOf('b=AS:') === 0) {\n      bandwidth = parseInt(bandwidth[0].substr(5), 10);\n    }\n    encodingParameters.forEach(function(params) {\n      params.maxBitrate = bandwidth;\n    });\n  }\n  return encodingParameters;\n};\n\nSDPUtils.writeSessionBoilerplate = function() {\n  // FIXME: sess-id should be an NTP timestamp.\n  return 'v=0\\r\\n' +\n      'o=thisisadapterortc 8169639915646943137 2 IN IP4 127.0.0.1\\r\\n' +\n      's=-\\r\\n' +\n      't=0 0\\r\\n';\n};\n\nSDPUtils.writeMediaSection = function(transceiver, caps, type, stream) {\n  var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);\n\n  // Map ICE parameters (ufrag, pwd) to SDP.\n  sdp += SDPUtils.writeIceParameters(\n      transceiver.iceGatherer.getLocalParameters());\n\n  // Map DTLS parameters to SDP.\n  sdp += SDPUtils.writeDtlsParameters(\n      transceiver.dtlsTransport.getLocalParameters(),\n      type === 'offer' ? 'actpass' : 'active');\n\n  sdp += 'a=mid:' + transceiver.mid + '\\r\\n';\n\n  if (transceiver.rtpSender && transceiver.rtpReceiver) {\n    sdp += 'a=sendrecv\\r\\n';\n  } else if (transceiver.rtpSender) {\n    sdp += 'a=sendonly\\r\\n';\n  } else if (transceiver.rtpReceiver) {\n    sdp += 'a=recvonly\\r\\n';\n  } else {\n    sdp += 'a=inactive\\r\\n';\n  }\n\n  // FIXME: for RTX there might be multiple SSRCs. Not implemented in Edge yet.\n  if (transceiver.rtpSender) {\n    var msid = 'msid:' + stream.id + ' ' +\n        transceiver.rtpSender.track.id + '\\r\\n';\n    sdp += 'a=' + msid;\n    sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n        ' ' + msid;\n  }\n  // FIXME: this should be written by writeRtpDescription.\n  sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n      ' cname:' + SDPUtils.localCName + '\\r\\n';\n  return sdp;\n};\n\n// Gets the direction from the mediaSection or the sessionpart.\nSDPUtils.getDirection = function(mediaSection, sessionpart) {\n  // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv.\n  var lines = SDPUtils.splitLines(mediaSection);\n  for (var i = 0; i < lines.length; i++) {\n    switch (lines[i]) {\n      case 'a=sendrecv':\n      case 'a=sendonly':\n      case 'a=recvonly':\n      case 'a=inactive':\n        return lines[i].substr(2);\n      default:\n        // FIXME: What should happen here?\n    }\n  }\n  if (sessionpart) {\n    return SDPUtils.getDirection(sessionpart);\n  }\n  return 'sendrecv';\n};\n\n// Expose public methods.\nmodule.exports = SDPUtils;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/sdp/sdp.js\n// module id = 452\n// module chunks = 0"],"mappings":"AAAA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;","sourceRoot":""}");
Severity: Minor
Found in app/assets/javascripts/metamaps.secret.bundle.js by fixme

FIXME found
Open

    eval("/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = __webpack_require__(452);\nvar browserDetails = __webpack_require__(460).browserDetails;\n\nvar edgeShim = {\n  shimPeerConnection: function() {\n    if (window.RTCIceGatherer) {\n      // ORTC defines an RTCIceCandidate object but no constructor.\n      // Not implemented in Edge.\n      if (!window.RTCIceCandidate) {\n        window.RTCIceCandidate = function(args) {\n          return args;\n        };\n      }\n      // ORTC does not have a session description object but\n      // other browsers (i.e. Chrome) that will support both PC and ORTC\n      // in the future might have this defined already.\n      if (!window.RTCSessionDescription) {\n        window.RTCSessionDescription = function(args) {\n          return args;\n        };\n      }\n      // this adds an additional event listener to MediaStrackTrack that signals\n      // when a tracks enabled property was changed.\n      var origMSTEnabled = Object.getOwnPropertyDescriptor(\n          MediaStreamTrack.prototype, 'enabled');\n      Object.defineProperty(MediaStreamTrack.prototype, 'enabled', {\n        set: function(value) {\n          origMSTEnabled.set.call(this, value);\n          var ev = new Event('enabled');\n          ev.enabled = value;\n          this.dispatchEvent(ev);\n        }\n      });\n    }\n\n    window.RTCPeerConnection = function(config) {\n      var self = this;\n\n      var _eventTarget = document.createDocumentFragment();\n      ['addEventListener', 'removeEventListener', 'dispatchEvent']\n          .forEach(function(method) {\n            self[method] = _eventTarget[method].bind(_eventTarget);\n          });\n\n      this.onicecandidate = null;\n      this.onaddstream = null;\n      this.ontrack = null;\n      this.onremovestream = null;\n      this.onsignalingstatechange = null;\n      this.oniceconnectionstatechange = null;\n      this.onnegotiationneeded = null;\n      this.ondatachannel = null;\n\n      this.localStreams = [];\n      this.remoteStreams = [];\n      this.getLocalStreams = function() {\n        return self.localStreams;\n      };\n      this.getRemoteStreams = function() {\n        return self.remoteStreams;\n      };\n\n      this.localDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.remoteDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.signalingState = 'stable';\n      this.iceConnectionState = 'new';\n      this.iceGatheringState = 'new';\n\n      this.iceOptions = {\n        gatherPolicy: 'all',\n        iceServers: []\n      };\n      if (config && config.iceTransportPolicy) {\n        switch (config.iceTransportPolicy) {\n          case 'all':\n          case 'relay':\n            this.iceOptions.gatherPolicy = config.iceTransportPolicy;\n            break;\n          case 'none':\n            // FIXME: remove once implementation and spec have added this.\n            throw new TypeError('iceTransportPolicy \"none\" not supported');\n          default:\n            // don't set iceTransportPolicy.\n            break;\n        }\n      }\n      this.usingBundle = config && config.bundlePolicy === 'max-bundle';\n\n      if (config && config.iceServers) {\n        // Edge does not like\n        // 1) stun:\n        // 2) turn: that does not have all of turn:host:port?transport=udp\n        // 3) turn: with ipv6 addresses\n        var iceServers = JSON.parse(JSON.stringify(config.iceServers));\n        this.iceOptions.iceServers = iceServers.filter(function(server) {\n          if (server && server.urls) {\n            var urls = server.urls;\n            if (typeof urls === 'string') {\n              urls = [urls];\n            }\n            urls = urls.filter(function(url) {\n              return (url.indexOf('turn:') === 0 &&\n                  url.indexOf('transport=udp') !== -1 &&\n                  url.indexOf('turn:[') === -1) ||\n                  (url.indexOf('stun:') === 0 &&\n                    browserDetails.version >= 14393);\n            })[0];\n            return !!urls;\n          }\n          return false;\n        });\n      }\n      this._config = config;\n\n      // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n      // everything that is needed to describe a SDP m-line.\n      this.transceivers = [];\n\n      // since the iceGatherer is currently created in createOffer but we\n      // must not emit candidates until after setLocalDescription we buffer\n      // them in this array.\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype._emitBufferedCandidates = function() {\n      var self = this;\n      var sections = SDPUtils.splitSections(self.localDescription.sdp);\n      // FIXME: need to apply ice candidates in a way which is async but\n      // in-order\n      this._localIceCandidatesBuffer.forEach(function(event) {\n        var end = !event.candidate || Object.keys(event.candidate).length === 0;\n        if (end) {\n          for (var j = 1; j < sections.length; j++) {\n            if (sections[j].indexOf('\\r\\na=end-of-candidates\\r\\n') === -1) {\n              sections[j] += 'a=end-of-candidates\\r\\n';\n            }\n          }\n        } else if (event.candidate.candidate.indexOf('typ endOfCandidates')\n            === -1) {\n          sections[event.candidate.sdpMLineIndex + 1] +=\n              'a=' + event.candidate.candidate + '\\r\\n';\n        }\n        self.localDescription.sdp = sections.join('');\n        self.dispatchEvent(event);\n        if (self.onicecandidate !== null) {\n          self.onicecandidate(event);\n        }\n        if (!event.candidate && self.iceGatheringState !== 'complete') {\n          var complete = self.transceivers.every(function(transceiver) {\n            return transceiver.iceGatherer &&\n                transceiver.iceGatherer.state === 'completed';\n          });\n          if (complete) {\n            self.iceGatheringState = 'complete';\n          }\n        }\n      });\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype.getConfiguration = function() {\n      return this._config;\n    };\n\n    window.RTCPeerConnection.prototype.addStream = function(stream) {\n      // Clone is necessary for local demos mostly, attaching directly\n      // to two different senders does not work (build 10547).\n      var clonedStream = stream.clone();\n      stream.getTracks().forEach(function(track, idx) {\n        var clonedTrack = clonedStream.getTracks()[idx];\n        track.addEventListener('enabled', function(event) {\n          clonedTrack.enabled = event.enabled;\n        });\n      });\n      this.localStreams.push(clonedStream);\n      this._maybeFireNegotiationNeeded();\n    };\n\n    window.RTCPeerConnection.prototype.removeStream = function(stream) {\n      var idx = this.localStreams.indexOf(stream);\n      if (idx > -1) {\n        this.localStreams.splice(idx, 1);\n        this._maybeFireNegotiationNeeded();\n      }\n    };\n\n    window.RTCPeerConnection.prototype.getSenders = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpSender;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpSender;\n      });\n    };\n\n    window.RTCPeerConnection.prototype.getReceivers = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpReceiver;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpReceiver;\n      });\n    };\n\n    // Determines the intersection of local and remote capabilities.\n    window.RTCPeerConnection.prototype._getCommonCapabilities =\n        function(localCapabilities, remoteCapabilities) {\n          var commonCapabilities = {\n            codecs: [],\n            headerExtensions: [],\n            fecMechanisms: []\n          };\n          localCapabilities.codecs.forEach(function(lCodec) {\n            for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n              var rCodec = remoteCapabilities.codecs[i];\n              if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n                  lCodec.clockRate === rCodec.clockRate) {\n                // number of channels is the highest common number of channels\n                rCodec.numChannels = Math.min(lCodec.numChannels,\n                    rCodec.numChannels);\n                // push rCodec so we reply with offerer payload type\n                commonCapabilities.codecs.push(rCodec);\n\n                // determine common feedback mechanisms\n                rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function(fb) {\n                  for (var j = 0; j < lCodec.rtcpFeedback.length; j++) {\n                    if (lCodec.rtcpFeedback[j].type === fb.type &&\n                        lCodec.rtcpFeedback[j].parameter === fb.parameter) {\n                      return true;\n                    }\n                  }\n                  return false;\n                });\n                // FIXME: also need to determine .parameters\n                //  see https://github.com/openpeer/ortc/issues/569\n                break;\n              }\n            }\n          });\n\n          localCapabilities.headerExtensions\n              .forEach(function(lHeaderExtension) {\n                for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n                     i++) {\n                  var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n                  if (lHeaderExtension.uri === rHeaderExtension.uri) {\n                    commonCapabilities.headerExtensions.push(rHeaderExtension);\n                    break;\n                  }\n                }\n              });\n\n          // FIXME: fecMechanisms\n          return commonCapabilities;\n        };\n\n    // Create ICE gatherer, ICE transport and DTLS transport.\n    window.RTCPeerConnection.prototype._createIceAndDtlsTransports =\n        function(mid, sdpMLineIndex) {\n          var self = this;\n          var iceGatherer = new RTCIceGatherer(self.iceOptions);\n          var iceTransport = new RTCIceTransport(iceGatherer);\n          iceGatherer.onlocalcandidate = function(evt) {\n            var event = new Event('icecandidate');\n            event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n            var cand = evt.candidate;\n            var end = !cand || Object.keys(cand).length === 0;\n            // Edge emits an empty object for RTCIceCandidateComplete‥\n            if (end) {\n              // polyfill since RTCIceGatherer.state is not implemented in\n              // Edge 10547 yet.\n              if (iceGatherer.state === undefined) {\n                iceGatherer.state = 'completed';\n              }\n\n              // Emit a candidate with type endOfCandidates to make the samples\n              // work. Edge requires addIceCandidate with this empty candidate\n              // to start checking. The real solution is to signal\n              // end-of-candidates to the other side when getting the null\n              // candidate but some apps (like the samples) don't do that.\n              event.candidate.candidate =\n                  'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates';\n            } else {\n              // RTCIceCandidate doesn't have a component, needs to be added\n              cand.component = iceTransport.component === 'RTCP' ? 2 : 1;\n              event.candidate.candidate = SDPUtils.writeCandidate(cand);\n            }\n\n            // update local description.\n            var sections = SDPUtils.splitSections(self.localDescription.sdp);\n            if (event.candidate.candidate.indexOf('typ endOfCandidates')\n                === -1) {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=' + event.candidate.candidate + '\\r\\n';\n            } else {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=end-of-candidates\\r\\n';\n            }\n            self.localDescription.sdp = sections.join('');\n\n            var complete = self.transceivers.every(function(transceiver) {\n              return transceiver.iceGatherer &&\n                  transceiver.iceGatherer.state === 'completed';\n            });\n\n            // Emit candidate if localDescription is set.\n            // Also emits null candidate when all gatherers are complete.\n            switch (self.iceGatheringState) {\n              case 'new':\n                self._localIceCandidatesBuffer.push(event);\n                if (end && complete) {\n                  self._localIceCandidatesBuffer.push(\n                      new Event('icecandidate'));\n                }\n                break;\n              case 'gathering':\n                self._emitBufferedCandidates();\n                self.dispatchEvent(event);\n                if (self.onicecandidate !== null) {\n                  self.onicecandidate(event);\n                }\n                if (complete) {\n                  self.dispatchEvent(new Event('icecandidate'));\n                  if (self.onicecandidate !== null) {\n                    self.onicecandidate(new Event('icecandidate'));\n                  }\n                  self.iceGatheringState = 'complete';\n                }\n                break;\n              case 'complete':\n                // should not happen... currently!\n                break;\n              default: // no-op.\n                break;\n            }\n          };\n          iceTransport.onicestatechange = function() {\n            self._updateConnectionState();\n          };\n\n          var dtlsTransport = new RTCDtlsTransport(iceTransport);\n          dtlsTransport.ondtlsstatechange = function() {\n            self._updateConnectionState();\n          };\n          dtlsTransport.onerror = function() {\n            // onerror does not set state to failed by itself.\n            dtlsTransport.state = 'failed';\n            self._updateConnectionState();\n          };\n\n          return {\n            iceGatherer: iceGatherer,\n            iceTransport: iceTransport,\n            dtlsTransport: dtlsTransport\n          };\n        };\n\n    // Start the RTP Sender and Receiver for a transceiver.\n    window.RTCPeerConnection.prototype._transceive = function(transceiver,\n        send, recv) {\n      var params = this._getCommonCapabilities(transceiver.localCapabilities,\n          transceiver.remoteCapabilities);\n      if (send && transceiver.rtpSender) {\n        params.encodings = transceiver.sendEncodingParameters;\n        params.rtcp = {\n          cname: SDPUtils.localCName\n        };\n        if (transceiver.recvEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpSender.send(params);\n      }\n      if (recv && transceiver.rtpReceiver) {\n        // remove RTX field in Edge 14942\n        if (transceiver.kind === 'video'\n            && transceiver.recvEncodingParameters) {\n          transceiver.recvEncodingParameters.forEach(function(p) {\n            delete p.rtx;\n          });\n        }\n        params.encodings = transceiver.recvEncodingParameters;\n        params.rtcp = {\n          cname: transceiver.cname\n        };\n        if (transceiver.sendEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpReceiver.receive(params);\n      }\n    };\n\n    window.RTCPeerConnection.prototype.setLocalDescription =\n        function(description) {\n          var self = this;\n          var sections;\n          var sessionpart;\n          if (description.type === 'offer') {\n            // FIXME: What was the purpose of this empty if statement?\n            // if (!this._pendingOffer) {\n            // } else {\n            if (this._pendingOffer) {\n              // VERY limited support for SDP munging. Limited to:\n              // * changing the order of codecs\n              sections = SDPUtils.splitSections(description.sdp);\n              sessionpart = sections.shift();\n              sections.forEach(function(mediaSection, sdpMLineIndex) {\n                var caps = SDPUtils.parseRtpParameters(mediaSection);\n                self._pendingOffer[sdpMLineIndex].localCapabilities = caps;\n              });\n              this.transceivers = this._pendingOffer;\n              delete this._pendingOffer;\n            }\n          } else if (description.type === 'answer') {\n            sections = SDPUtils.splitSections(self.remoteDescription.sdp);\n            sessionpart = sections.shift();\n            var isIceLite = SDPUtils.matchPrefix(sessionpart,\n                'a=ice-lite').length > 0;\n            sections.forEach(function(mediaSection, sdpMLineIndex) {\n              var transceiver = self.transceivers[sdpMLineIndex];\n              var iceGatherer = transceiver.iceGatherer;\n              var iceTransport = transceiver.iceTransport;\n              var dtlsTransport = transceiver.dtlsTransport;\n              var localCapabilities = transceiver.localCapabilities;\n              var remoteCapabilities = transceiver.remoteCapabilities;\n\n              var rejected = mediaSection.split('\\n', 1)[0]\n                  .split(' ', 2)[1] === '0';\n\n              if (!rejected && !transceiver.isDatachannel) {\n                var remoteIceParameters = SDPUtils.getIceParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                  .map(function(cand) {\n                    return SDPUtils.parseCandidate(cand);\n                  })\n                  .filter(function(cand) {\n                    return cand.component === '1';\n                  });\n                  // ice-lite only includes host candidates in the SDP so we can\n                  // use setRemoteCandidates (which implies an\n                  // RTCIceCandidateComplete)\n                  if (cands.length) {\n                    iceTransport.setRemoteCandidates(cands);\n                  }\n                }\n                var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  remoteDtlsParameters.role = 'server';\n                }\n\n                if (!self.usingBundle || sdpMLineIndex === 0) {\n                  iceTransport.start(iceGatherer, remoteIceParameters,\n                      isIceLite ? 'controlling' : 'controlled');\n                  dtlsTransport.start(remoteDtlsParameters);\n                }\n\n                // Calculate intersection of capabilities.\n                var params = self._getCommonCapabilities(localCapabilities,\n                    remoteCapabilities);\n\n                // Start the RTCRtpSender. The RTCRtpReceiver for this\n                // transceiver has already been started in setRemoteDescription.\n                self._transceive(transceiver,\n                    params.codecs.length > 0,\n                    false);\n              }\n            });\n          }\n\n          this.localDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-local-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n\n          // If a success callback was provided, emit ICE candidates after it\n          // has been executed. Otherwise, emit callback after the Promise is\n          // resolved.\n          var hasCallback = arguments.length > 1 &&\n            typeof arguments[1] === 'function';\n          if (hasCallback) {\n            var cb = arguments[1];\n            window.setTimeout(function() {\n              cb();\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              self._emitBufferedCandidates();\n            }, 0);\n          }\n          var p = Promise.resolve();\n          p.then(function() {\n            if (!hasCallback) {\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              // Usually candidates will be emitted earlier.\n              window.setTimeout(self._emitBufferedCandidates.bind(self), 500);\n            }\n          });\n          return p;\n        };\n\n    window.RTCPeerConnection.prototype.setRemoteDescription =\n        function(description) {\n          var self = this;\n          var stream = new MediaStream();\n          var receiverList = [];\n          var sections = SDPUtils.splitSections(description.sdp);\n          var sessionpart = sections.shift();\n          var isIceLite = SDPUtils.matchPrefix(sessionpart,\n              'a=ice-lite').length > 0;\n          this.usingBundle = SDPUtils.matchPrefix(sessionpart,\n              'a=group:BUNDLE ').length > 0;\n          sections.forEach(function(mediaSection, sdpMLineIndex) {\n            var lines = SDPUtils.splitLines(mediaSection);\n            var mline = lines[0].substr(2).split(' ');\n            var kind = mline[0];\n            var rejected = mline[1] === '0';\n            var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n\n            var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:');\n            if (mid.length) {\n              mid = mid[0].substr(6);\n            } else {\n              mid = SDPUtils.generateIdentifier();\n            }\n\n            // Reject datachannels which are not implemented yet.\n            if (kind === 'application' && mline[2] === 'DTLS/SCTP') {\n              self.transceivers[sdpMLineIndex] = {\n                mid: mid,\n                isDatachannel: true\n              };\n              return;\n            }\n\n            var transceiver;\n            var iceGatherer;\n            var iceTransport;\n            var dtlsTransport;\n            var rtpSender;\n            var rtpReceiver;\n            var sendEncodingParameters;\n            var recvEncodingParameters;\n            var localCapabilities;\n\n            var track;\n            // FIXME: ensure the mediaSection has rtcp-mux set.\n            var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n            var remoteIceParameters;\n            var remoteDtlsParameters;\n            if (!rejected) {\n              remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters.role = 'client';\n            }\n            recvEncodingParameters =\n                SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n            var cname;\n            // Gets the first SSRC. Note that with RTX there might be multiple\n            // SSRCs.\n            var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n                .map(function(line) {\n                  return SDPUtils.parseSsrcMedia(line);\n                })\n                .filter(function(obj) {\n                  return obj.attribute === 'cname';\n                })[0];\n            if (remoteSsrc) {\n              cname = remoteSsrc.value;\n            }\n\n            var isComplete = SDPUtils.matchPrefix(mediaSection,\n                'a=end-of-candidates', sessionpart).length > 0;\n            var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                .map(function(cand) {\n                  return SDPUtils.parseCandidate(cand);\n                })\n                .filter(function(cand) {\n                  return cand.component === '1';\n                });\n            if (description.type === 'offer' && !rejected) {\n              var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n                iceGatherer: self.transceivers[0].iceGatherer,\n                iceTransport: self.transceivers[0].iceTransport,\n                dtlsTransport: self.transceivers[0].dtlsTransport\n              } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n              if (isComplete) {\n                transports.iceTransport.setRemoteCandidates(cands);\n              }\n\n              localCapabilities = RTCRtpReceiver.getCapabilities(kind);\n\n              // filter RTX until additional stuff needed for RTX is implemented\n              // in adapter.js\n              localCapabilities.codecs = localCapabilities.codecs.filter(\n                  function(codec) {\n                    return codec.name !== 'rtx';\n                  });\n\n              sendEncodingParameters = [{\n                ssrc: (2 * sdpMLineIndex + 2) * 1001\n              }];\n\n              rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n\n              track = rtpReceiver.track;\n              receiverList.push([track, rtpReceiver]);\n              // FIXME: not correct when there are multiple streams but that is\n              // not currently supported in this shim.\n              stream.addTrack(track);\n\n              // FIXME: look at direction.\n              if (self.localStreams.length > 0 &&\n                  self.localStreams[0].getTracks().length >= sdpMLineIndex) {\n                var localTrack;\n                if (kind === 'audio') {\n                  localTrack = self.localStreams[0].getAudioTracks()[0];\n                } else if (kind === 'video') {\n                  localTrack = self.localStreams[0].getVideoTracks()[0];\n                }\n                if (localTrack) {\n                  rtpSender = new RTCRtpSender(localTrack,\n                      transports.dtlsTransport);\n                }\n              }\n\n              self.transceivers[sdpMLineIndex] = {\n                iceGatherer: transports.iceGatherer,\n                iceTransport: transports.iceTransport,\n                dtlsTransport: transports.dtlsTransport,\n                localCapabilities: localCapabilities,\n                remoteCapabilities: remoteCapabilities,\n                rtpSender: rtpSender,\n                rtpReceiver: rtpReceiver,\n                kind: kind,\n                mid: mid,\n                cname: cname,\n                sendEncodingParameters: sendEncodingParameters,\n                recvEncodingParameters: recvEncodingParameters\n              };\n              // Start the RTCRtpReceiver now. The RTPSender is started in\n              // setLocalDescription.\n              self._transceive(self.transceivers[sdpMLineIndex],\n                  false,\n                  direction === 'sendrecv' || direction === 'sendonly');\n            } else if (description.type === 'answer' && !rejected) {\n              transceiver = self.transceivers[sdpMLineIndex];\n              iceGatherer = transceiver.iceGatherer;\n              iceTransport = transceiver.iceTransport;\n              dtlsTransport = transceiver.dtlsTransport;\n              rtpSender = transceiver.rtpSender;\n              rtpReceiver = transceiver.rtpReceiver;\n              sendEncodingParameters = transceiver.sendEncodingParameters;\n              localCapabilities = transceiver.localCapabilities;\n\n              self.transceivers[sdpMLineIndex].recvEncodingParameters =\n                  recvEncodingParameters;\n              self.transceivers[sdpMLineIndex].remoteCapabilities =\n                  remoteCapabilities;\n              self.transceivers[sdpMLineIndex].cname = cname;\n\n              if ((isIceLite || isComplete) && cands.length) {\n                iceTransport.setRemoteCandidates(cands);\n              }\n              if (!self.usingBundle || sdpMLineIndex === 0) {\n                iceTransport.start(iceGatherer, remoteIceParameters,\n                    'controlling');\n                dtlsTransport.start(remoteDtlsParameters);\n              }\n\n              self._transceive(transceiver,\n                  direction === 'sendrecv' || direction === 'recvonly',\n                  direction === 'sendrecv' || direction === 'sendonly');\n\n              if (rtpReceiver &&\n                  (direction === 'sendrecv' || direction === 'sendonly')) {\n                track = rtpReceiver.track;\n                receiverList.push([track, rtpReceiver]);\n                stream.addTrack(track);\n              } else {\n                // FIXME: actually the receiver should be created later.\n                delete transceiver.rtpReceiver;\n              }\n            }\n          });\n\n          this.remoteDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-remote-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n          if (stream.getTracks().length) {\n            self.remoteStreams.push(stream);\n            window.setTimeout(function() {\n              var event = new Event('addstream');\n              event.stream = stream;\n              self.dispatchEvent(event);\n              if (self.onaddstream !== null) {\n                window.setTimeout(function() {\n                  self.onaddstream(event);\n                }, 0);\n              }\n\n              receiverList.forEach(function(item) {\n                var track = item[0];\n                var receiver = item[1];\n                var trackEvent = new Event('track');\n                trackEvent.track = track;\n                trackEvent.receiver = receiver;\n                trackEvent.streams = [stream];\n                self.dispatchEvent(event);\n                if (self.ontrack !== null) {\n                  window.setTimeout(function() {\n                    self.ontrack(trackEvent);\n                  }, 0);\n                }\n              });\n            }, 0);\n          }\n          if (arguments.length > 1 && typeof arguments[1] === 'function') {\n            window.setTimeout(arguments[1], 0);\n          }\n          return Promise.resolve();\n        };\n\n    window.RTCPeerConnection.prototype.close = function() {\n      this.transceivers.forEach(function(transceiver) {\n        /* not yet\n        if (transceiver.iceGatherer) {\n          transceiver.iceGatherer.close();\n        }\n        */\n        if (transceiver.iceTransport) {\n          transceiver.iceTransport.stop();\n        }\n        if (transceiver.dtlsTransport) {\n          transceiver.dtlsTransport.stop();\n        }\n        if (transceiver.rtpSender) {\n          transceiver.rtpSender.stop();\n        }\n        if (transceiver.rtpReceiver) {\n          transceiver.rtpReceiver.stop();\n        }\n      });\n      // FIXME: clean up tracks, local streams, remote streams, etc\n      this._updateSignalingState('closed');\n    };\n\n    // Update the signaling state.\n    window.RTCPeerConnection.prototype._updateSignalingState =\n        function(newState) {\n          this.signalingState = newState;\n          var event = new Event('signalingstatechange');\n          this.dispatchEvent(event);\n          if (this.onsignalingstatechange !== null) {\n            this.onsignalingstatechange(event);\n          }\n        };\n\n    // Determine whether to fire the negotiationneeded event.\n    window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded =\n        function() {\n          // Fire away (for now).\n          var event = new Event('negotiationneeded');\n          this.dispatchEvent(event);\n          if (this.onnegotiationneeded !== null) {\n            this.onnegotiationneeded(event);\n          }\n        };\n\n    // Update the connection state.\n    window.RTCPeerConnection.prototype._updateConnectionState = function() {\n      var self = this;\n      var newState;\n      var states = {\n        'new': 0,\n        closed: 0,\n        connecting: 0,\n        checking: 0,\n        connected: 0,\n        completed: 0,\n        failed: 0\n      };\n      this.transceivers.forEach(function(transceiver) {\n        states[transceiver.iceTransport.state]++;\n        states[transceiver.dtlsTransport.state]++;\n      });\n      // ICETransport.completed and connected are the same for this purpose.\n      states.connected += states.completed;\n\n      newState = 'new';\n      if (states.failed > 0) {\n        newState = 'failed';\n      } else if (states.connecting > 0 || states.checking > 0) {\n        newState = 'connecting';\n      } else if (states.disconnected > 0) {\n        newState = 'disconnected';\n      } else if (states.new > 0) {\n        newState = 'new';\n      } else if (states.connected > 0 || states.completed > 0) {\n        newState = 'connected';\n      }\n\n      if (newState !== self.iceConnectionState) {\n        self.iceConnectionState = newState;\n        var event = new Event('iceconnectionstatechange');\n        this.dispatchEvent(event);\n        if (this.oniceconnectionstatechange !== null) {\n          this.oniceconnectionstatechange(event);\n        }\n      }\n    };\n\n    window.RTCPeerConnection.prototype.createOffer = function() {\n      var self = this;\n      if (this._pendingOffer) {\n        throw new Error('createOffer called while there is a pending offer.');\n      }\n      var offerOptions;\n      if (arguments.length === 1 && typeof arguments[0] !== 'function') {\n        offerOptions = arguments[0];\n      } else if (arguments.length === 3) {\n        offerOptions = arguments[2];\n      }\n\n      var tracks = [];\n      var numAudioTracks = 0;\n      var numVideoTracks = 0;\n      // Default to sendrecv.\n      if (this.localStreams.length) {\n        numAudioTracks = this.localStreams[0].getAudioTracks().length;\n        numVideoTracks = this.localStreams[0].getVideoTracks().length;\n      }\n      // Determine number of audio and video tracks we need to send/recv.\n      if (offerOptions) {\n        // Reject Chrome legacy constraints.\n        if (offerOptions.mandatory || offerOptions.optional) {\n          throw new TypeError(\n              'Legacy mandatory/optional constraints not supported.');\n        }\n        if (offerOptions.offerToReceiveAudio !== undefined) {\n          numAudioTracks = offerOptions.offerToReceiveAudio;\n        }\n        if (offerOptions.offerToReceiveVideo !== undefined) {\n          numVideoTracks = offerOptions.offerToReceiveVideo;\n        }\n      }\n      if (this.localStreams.length) {\n        // Push local streams.\n        this.localStreams[0].getTracks().forEach(function(track) {\n          tracks.push({\n            kind: track.kind,\n            track: track,\n            wantReceive: track.kind === 'audio' ?\n                numAudioTracks > 0 : numVideoTracks > 0\n          });\n          if (track.kind === 'audio') {\n            numAudioTracks--;\n          } else if (track.kind === 'video') {\n            numVideoTracks--;\n          }\n        });\n      }\n      // Create M-lines for recvonly streams.\n      while (numAudioTracks > 0 || numVideoTracks > 0) {\n        if (numAudioTracks > 0) {\n          tracks.push({\n            kind: 'audio',\n            wantReceive: true\n          });\n          numAudioTracks--;\n        }\n        if (numVideoTracks > 0) {\n          tracks.push({\n            kind: 'video',\n            wantReceive: true\n          });\n          numVideoTracks--;\n        }\n      }\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      var transceivers = [];\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        // For each track, create an ice gatherer, ice transport,\n        // dtls transport, potentially rtpsender and rtpreceiver.\n        var track = mline.track;\n        var kind = mline.kind;\n        var mid = SDPUtils.generateIdentifier();\n\n        var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n          iceGatherer: transceivers[0].iceGatherer,\n          iceTransport: transceivers[0].iceTransport,\n          dtlsTransport: transceivers[0].dtlsTransport\n        } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n        var localCapabilities = RTCRtpSender.getCapabilities(kind);\n        // filter RTX until additional stuff needed for RTX is implemented\n        // in adapter.js\n        localCapabilities.codecs = localCapabilities.codecs.filter(\n            function(codec) {\n              return codec.name !== 'rtx';\n            });\n        localCapabilities.codecs.forEach(function(codec) {\n          // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552\n          // by adding level-asymmetry-allowed=1\n          if (codec.name === 'H264' &&\n              codec.parameters['level-asymmetry-allowed'] === undefined) {\n            codec.parameters['level-asymmetry-allowed'] = '1';\n          }\n        });\n\n        var rtpSender;\n        var rtpReceiver;\n\n        // generate an ssrc now, to be used later in rtpSender.send\n        var sendEncodingParameters = [{\n          ssrc: (2 * sdpMLineIndex + 1) * 1001\n        }];\n        if (track) {\n          rtpSender = new RTCRtpSender(track, transports.dtlsTransport);\n        }\n\n        if (mline.wantReceive) {\n          rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n        }\n\n        transceivers[sdpMLineIndex] = {\n          iceGatherer: transports.iceGatherer,\n          iceTransport: transports.iceTransport,\n          dtlsTransport: transports.dtlsTransport,\n          localCapabilities: localCapabilities,\n          remoteCapabilities: null,\n          rtpSender: rtpSender,\n          rtpReceiver: rtpReceiver,\n          kind: kind,\n          mid: mid,\n          sendEncodingParameters: sendEncodingParameters,\n          recvEncodingParameters: null\n        };\n      });\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        var transceiver = transceivers[sdpMLineIndex];\n        sdp += SDPUtils.writeMediaSection(transceiver,\n            transceiver.localCapabilities, 'offer', self.localStreams[0]);\n      });\n\n      this._pendingOffer = transceivers;\n      var desc = new RTCSessionDescription({\n        type: 'offer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.createAnswer = function() {\n      var self = this;\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      this.transceivers.forEach(function(transceiver) {\n        if (transceiver.isDatachannel) {\n          sdp += 'm=application 0 DTLS/SCTP 5000\\r\\n' +\n              'c=IN IP4 0.0.0.0\\r\\n' +\n              'a=mid:' + transceiver.mid + '\\r\\n';\n          return;\n        }\n        // Calculate intersection of capabilities.\n        var commonCapabilities = self._getCommonCapabilities(\n            transceiver.localCapabilities,\n            transceiver.remoteCapabilities);\n\n        sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities,\n            'answer', self.localStreams[0]);\n      });\n\n      var desc = new RTCSessionDescription({\n        type: 'answer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n      if (!candidate) {\n        this.transceivers.forEach(function(transceiver) {\n          transceiver.iceTransport.addRemoteCandidate({});\n        });\n      } else {\n        var mLineIndex = candidate.sdpMLineIndex;\n        if (candidate.sdpMid) {\n          for (var i = 0; i < this.transceivers.length; i++) {\n            if (this.transceivers[i].mid === candidate.sdpMid) {\n              mLineIndex = i;\n              break;\n            }\n          }\n        }\n        var transceiver = this.transceivers[mLineIndex];\n        if (transceiver) {\n          var cand = Object.keys(candidate.candidate).length > 0 ?\n              SDPUtils.parseCandidate(candidate.candidate) : {};\n          // Ignore Chrome's invalid candidates since Edge does not like them.\n          if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) {\n            return;\n          }\n          // Ignore RTCP candidates, we assume RTCP-MUX.\n          if (cand.component !== '1') {\n            return;\n          }\n          // A dirty hack to make samples work.\n          if (cand.type === 'endOfCandidates') {\n            cand = {};\n          }\n          transceiver.iceTransport.addRemoteCandidate(cand);\n\n          // update the remoteDescription.\n          var sections = SDPUtils.splitSections(this.remoteDescription.sdp);\n          sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim()\n              : 'a=end-of-candidates') + '\\r\\n';\n          this.remoteDescription.sdp = sections.join('');\n        }\n      }\n      if (arguments.length > 1 && typeof arguments[1] === 'function') {\n        window.setTimeout(arguments[1], 0);\n      }\n      return Promise.resolve();\n    };\n\n    window.RTCPeerConnection.prototype.getStats = function() {\n      var promises = [];\n      this.transceivers.forEach(function(transceiver) {\n        ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n            'dtlsTransport'].forEach(function(method) {\n              if (transceiver[method]) {\n                promises.push(transceiver[method].getStats());\n              }\n            });\n      });\n      var cb = arguments.length > 1 && typeof arguments[1] === 'function' &&\n          arguments[1];\n      return new Promise(function(resolve) {\n        // shim getStats with maplike support\n        var results = new Map();\n        Promise.all(promises).then(function(res) {\n          res.forEach(function(result) {\n            Object.keys(result).forEach(function(id) {\n              results.set(id, result[id]);\n              results[id] = result[id];\n            });\n          });\n          if (cb) {\n            window.setTimeout(cb, 0, results);\n          }\n          resolve(results);\n        });\n      });\n    };\n  }\n};\n\n// Expose public methods.\nmodule.exports = {\n  shimPeerConnection: edgeShim.shimPeerConnection,\n  shimGetUserMedia: __webpack_require__(464)\n};\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"463.js","sources":["/home/ubuntu/workspace/node_modules/webrtc-adapter/src/js/edge/edge_shim.js"],"sourcesContent":["/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = require('sdp');\nvar browserDetails = require('../utils').browserDetails;\n\nvar edgeShim = {\n  shimPeerConnection: function() {\n    if (window.RTCIceGatherer) {\n      // ORTC defines an RTCIceCandidate object but no constructor.\n      // Not implemented in Edge.\n      if (!window.RTCIceCandidate) {\n        window.RTCIceCandidate = function(args) {\n          return args;\n        };\n      }\n      // ORTC does not have a session description object but\n      // other browsers (i.e. Chrome) that will support both PC and ORTC\n      // in the future might have this defined already.\n      if (!window.RTCSessionDescription) {\n        window.RTCSessionDescription = function(args) {\n          return args;\n        };\n      }\n      // this adds an additional event listener to MediaStrackTrack that signals\n      // when a tracks enabled property was changed.\n      var origMSTEnabled = Object.getOwnPropertyDescriptor(\n          MediaStreamTrack.prototype, 'enabled');\n      Object.defineProperty(MediaStreamTrack.prototype, 'enabled', {\n        set: function(value) {\n          origMSTEnabled.set.call(this, value);\n          var ev = new Event('enabled');\n          ev.enabled = value;\n          this.dispatchEvent(ev);\n        }\n      });\n    }\n\n    window.RTCPeerConnection = function(config) {\n      var self = this;\n\n      var _eventTarget = document.createDocumentFragment();\n      ['addEventListener', 'removeEventListener', 'dispatchEvent']\n          .forEach(function(method) {\n            self[method] = _eventTarget[method].bind(_eventTarget);\n          });\n\n      this.onicecandidate = null;\n      this.onaddstream = null;\n      this.ontrack = null;\n      this.onremovestream = null;\n      this.onsignalingstatechange = null;\n      this.oniceconnectionstatechange = null;\n      this.onnegotiationneeded = null;\n      this.ondatachannel = null;\n\n      this.localStreams = [];\n      this.remoteStreams = [];\n      this.getLocalStreams = function() {\n        return self.localStreams;\n      };\n      this.getRemoteStreams = function() {\n        return self.remoteStreams;\n      };\n\n      this.localDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.remoteDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.signalingState = 'stable';\n      this.iceConnectionState = 'new';\n      this.iceGatheringState = 'new';\n\n      this.iceOptions = {\n        gatherPolicy: 'all',\n        iceServers: []\n      };\n      if (config && config.iceTransportPolicy) {\n        switch (config.iceTransportPolicy) {\n          case 'all':\n          case 'relay':\n            this.iceOptions.gatherPolicy = config.iceTransportPolicy;\n            break;\n          case 'none':\n            // FIXME: remove once implementation and spec have added this.\n            throw new TypeError('iceTransportPolicy \"none\" not supported');\n          default:\n            // don't set iceTransportPolicy.\n            break;\n        }\n      }\n      this.usingBundle = config && config.bundlePolicy === 'max-bundle';\n\n      if (config && config.iceServers) {\n        // Edge does not like\n        // 1) stun:\n        // 2) turn: that does not have all of turn:host:port?transport=udp\n        // 3) turn: with ipv6 addresses\n        var iceServers = JSON.parse(JSON.stringify(config.iceServers));\n        this.iceOptions.iceServers = iceServers.filter(function(server) {\n          if (server && server.urls) {\n            var urls = server.urls;\n            if (typeof urls === 'string') {\n              urls = [urls];\n            }\n            urls = urls.filter(function(url) {\n              return (url.indexOf('turn:') === 0 &&\n                  url.indexOf('transport=udp') !== -1 &&\n                  url.indexOf('turn:[') === -1) ||\n                  (url.indexOf('stun:') === 0 &&\n                    browserDetails.version >= 14393);\n            })[0];\n            return !!urls;\n          }\n          return false;\n        });\n      }\n      this._config = config;\n\n      // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n      // everything that is needed to describe a SDP m-line.\n      this.transceivers = [];\n\n      // since the iceGatherer is currently created in createOffer but we\n      // must not emit candidates until after setLocalDescription we buffer\n      // them in this array.\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype._emitBufferedCandidates = function() {\n      var self = this;\n      var sections = SDPUtils.splitSections(self.localDescription.sdp);\n      // FIXME: need to apply ice candidates in a way which is async but\n      // in-order\n      this._localIceCandidatesBuffer.forEach(function(event) {\n        var end = !event.candidate || Object.keys(event.candidate).length === 0;\n        if (end) {\n          for (var j = 1; j < sections.length; j++) {\n            if (sections[j].indexOf('\\r\\na=end-of-candidates\\r\\n') === -1) {\n              sections[j] += 'a=end-of-candidates\\r\\n';\n            }\n          }\n        } else if (event.candidate.candidate.indexOf('typ endOfCandidates')\n            === -1) {\n          sections[event.candidate.sdpMLineIndex + 1] +=\n              'a=' + event.candidate.candidate + '\\r\\n';\n        }\n        self.localDescription.sdp = sections.join('');\n        self.dispatchEvent(event);\n        if (self.onicecandidate !== null) {\n          self.onicecandidate(event);\n        }\n        if (!event.candidate && self.iceGatheringState !== 'complete') {\n          var complete = self.transceivers.every(function(transceiver) {\n            return transceiver.iceGatherer &&\n                transceiver.iceGatherer.state === 'completed';\n          });\n          if (complete) {\n            self.iceGatheringState = 'complete';\n          }\n        }\n      });\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype.getConfiguration = function() {\n      return this._config;\n    };\n\n    window.RTCPeerConnection.prototype.addStream = function(stream) {\n      // Clone is necessary for local demos mostly, attaching directly\n      // to two different senders does not work (build 10547).\n      var clonedStream = stream.clone();\n      stream.getTracks().forEach(function(track, idx) {\n        var clonedTrack = clonedStream.getTracks()[idx];\n        track.addEventListener('enabled', function(event) {\n          clonedTrack.enabled = event.enabled;\n        });\n      });\n      this.localStreams.push(clonedStream);\n      this._maybeFireNegotiationNeeded();\n    };\n\n    window.RTCPeerConnection.prototype.removeStream = function(stream) {\n      var idx = this.localStreams.indexOf(stream);\n      if (idx > -1) {\n        this.localStreams.splice(idx, 1);\n        this._maybeFireNegotiationNeeded();\n      }\n    };\n\n    window.RTCPeerConnection.prototype.getSenders = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpSender;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpSender;\n      });\n    };\n\n    window.RTCPeerConnection.prototype.getReceivers = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpReceiver;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpReceiver;\n      });\n    };\n\n    // Determines the intersection of local and remote capabilities.\n    window.RTCPeerConnection.prototype._getCommonCapabilities =\n        function(localCapabilities, remoteCapabilities) {\n          var commonCapabilities = {\n            codecs: [],\n            headerExtensions: [],\n            fecMechanisms: []\n          };\n          localCapabilities.codecs.forEach(function(lCodec) {\n            for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n              var rCodec = remoteCapabilities.codecs[i];\n              if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n                  lCodec.clockRate === rCodec.clockRate) {\n                // number of channels is the highest common number of channels\n                rCodec.numChannels = Math.min(lCodec.numChannels,\n                    rCodec.numChannels);\n                // push rCodec so we reply with offerer payload type\n                commonCapabilities.codecs.push(rCodec);\n\n                // determine common feedback mechanisms\n                rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function(fb) {\n                  for (var j = 0; j < lCodec.rtcpFeedback.length; j++) {\n                    if (lCodec.rtcpFeedback[j].type === fb.type &&\n                        lCodec.rtcpFeedback[j].parameter === fb.parameter) {\n                      return true;\n                    }\n                  }\n                  return false;\n                });\n                // FIXME: also need to determine .parameters\n                //  see https://github.com/openpeer/ortc/issues/569\n                break;\n              }\n            }\n          });\n\n          localCapabilities.headerExtensions\n              .forEach(function(lHeaderExtension) {\n                for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n                     i++) {\n                  var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n                  if (lHeaderExtension.uri === rHeaderExtension.uri) {\n                    commonCapabilities.headerExtensions.push(rHeaderExtension);\n                    break;\n                  }\n                }\n              });\n\n          // FIXME: fecMechanisms\n          return commonCapabilities;\n        };\n\n    // Create ICE gatherer, ICE transport and DTLS transport.\n    window.RTCPeerConnection.prototype._createIceAndDtlsTransports =\n        function(mid, sdpMLineIndex) {\n          var self = this;\n          var iceGatherer = new RTCIceGatherer(self.iceOptions);\n          var iceTransport = new RTCIceTransport(iceGatherer);\n          iceGatherer.onlocalcandidate = function(evt) {\n            var event = new Event('icecandidate');\n            event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n            var cand = evt.candidate;\n            var end = !cand || Object.keys(cand).length === 0;\n            // Edge emits an empty object for RTCIceCandidateComplete‥\n            if (end) {\n              // polyfill since RTCIceGatherer.state is not implemented in\n              // Edge 10547 yet.\n              if (iceGatherer.state === undefined) {\n                iceGatherer.state = 'completed';\n              }\n\n              // Emit a candidate with type endOfCandidates to make the samples\n              // work. Edge requires addIceCandidate with this empty candidate\n              // to start checking. The real solution is to signal\n              // end-of-candidates to the other side when getting the null\n              // candidate but some apps (like the samples) don't do that.\n              event.candidate.candidate =\n                  'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates';\n            } else {\n              // RTCIceCandidate doesn't have a component, needs to be added\n              cand.component = iceTransport.component === 'RTCP' ? 2 : 1;\n              event.candidate.candidate = SDPUtils.writeCandidate(cand);\n            }\n\n            // update local description.\n            var sections = SDPUtils.splitSections(self.localDescription.sdp);\n            if (event.candidate.candidate.indexOf('typ endOfCandidates')\n                === -1) {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=' + event.candidate.candidate + '\\r\\n';\n            } else {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=end-of-candidates\\r\\n';\n            }\n            self.localDescription.sdp = sections.join('');\n\n            var complete = self.transceivers.every(function(transceiver) {\n              return transceiver.iceGatherer &&\n                  transceiver.iceGatherer.state === 'completed';\n            });\n\n            // Emit candidate if localDescription is set.\n            // Also emits null candidate when all gatherers are complete.\n            switch (self.iceGatheringState) {\n              case 'new':\n                self._localIceCandidatesBuffer.push(event);\n                if (end && complete) {\n                  self._localIceCandidatesBuffer.push(\n                      new Event('icecandidate'));\n                }\n                break;\n              case 'gathering':\n                self._emitBufferedCandidates();\n                self.dispatchEvent(event);\n                if (self.onicecandidate !== null) {\n                  self.onicecandidate(event);\n                }\n                if (complete) {\n                  self.dispatchEvent(new Event('icecandidate'));\n                  if (self.onicecandidate !== null) {\n                    self.onicecandidate(new Event('icecandidate'));\n                  }\n                  self.iceGatheringState = 'complete';\n                }\n                break;\n              case 'complete':\n                // should not happen... currently!\n                break;\n              default: // no-op.\n                break;\n            }\n          };\n          iceTransport.onicestatechange = function() {\n            self._updateConnectionState();\n          };\n\n          var dtlsTransport = new RTCDtlsTransport(iceTransport);\n          dtlsTransport.ondtlsstatechange = function() {\n            self._updateConnectionState();\n          };\n          dtlsTransport.onerror = function() {\n            // onerror does not set state to failed by itself.\n            dtlsTransport.state = 'failed';\n            self._updateConnectionState();\n          };\n\n          return {\n            iceGatherer: iceGatherer,\n            iceTransport: iceTransport,\n            dtlsTransport: dtlsTransport\n          };\n        };\n\n    // Start the RTP Sender and Receiver for a transceiver.\n    window.RTCPeerConnection.prototype._transceive = function(transceiver,\n        send, recv) {\n      var params = this._getCommonCapabilities(transceiver.localCapabilities,\n          transceiver.remoteCapabilities);\n      if (send && transceiver.rtpSender) {\n        params.encodings = transceiver.sendEncodingParameters;\n        params.rtcp = {\n          cname: SDPUtils.localCName\n        };\n        if (transceiver.recvEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpSender.send(params);\n      }\n      if (recv && transceiver.rtpReceiver) {\n        // remove RTX field in Edge 14942\n        if (transceiver.kind === 'video'\n            && transceiver.recvEncodingParameters) {\n          transceiver.recvEncodingParameters.forEach(function(p) {\n            delete p.rtx;\n          });\n        }\n        params.encodings = transceiver.recvEncodingParameters;\n        params.rtcp = {\n          cname: transceiver.cname\n        };\n        if (transceiver.sendEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpReceiver.receive(params);\n      }\n    };\n\n    window.RTCPeerConnection.prototype.setLocalDescription =\n        function(description) {\n          var self = this;\n          var sections;\n          var sessionpart;\n          if (description.type === 'offer') {\n            // FIXME: What was the purpose of this empty if statement?\n            // if (!this._pendingOffer) {\n            // } else {\n            if (this._pendingOffer) {\n              // VERY limited support for SDP munging. Limited to:\n              // * changing the order of codecs\n              sections = SDPUtils.splitSections(description.sdp);\n              sessionpart = sections.shift();\n              sections.forEach(function(mediaSection, sdpMLineIndex) {\n                var caps = SDPUtils.parseRtpParameters(mediaSection);\n                self._pendingOffer[sdpMLineIndex].localCapabilities = caps;\n              });\n              this.transceivers = this._pendingOffer;\n              delete this._pendingOffer;\n            }\n          } else if (description.type === 'answer') {\n            sections = SDPUtils.splitSections(self.remoteDescription.sdp);\n            sessionpart = sections.shift();\n            var isIceLite = SDPUtils.matchPrefix(sessionpart,\n                'a=ice-lite').length > 0;\n            sections.forEach(function(mediaSection, sdpMLineIndex) {\n              var transceiver = self.transceivers[sdpMLineIndex];\n              var iceGatherer = transceiver.iceGatherer;\n              var iceTransport = transceiver.iceTransport;\n              var dtlsTransport = transceiver.dtlsTransport;\n              var localCapabilities = transceiver.localCapabilities;\n              var remoteCapabilities = transceiver.remoteCapabilities;\n\n              var rejected = mediaSection.split('\\n', 1)[0]\n                  .split(' ', 2)[1] === '0';\n\n              if (!rejected && !transceiver.isDatachannel) {\n                var remoteIceParameters = SDPUtils.getIceParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                  .map(function(cand) {\n                    return SDPUtils.parseCandidate(cand);\n                  })\n                  .filter(function(cand) {\n                    return cand.component === '1';\n                  });\n                  // ice-lite only includes host candidates in the SDP so we can\n                  // use setRemoteCandidates (which implies an\n                  // RTCIceCandidateComplete)\n                  if (cands.length) {\n                    iceTransport.setRemoteCandidates(cands);\n                  }\n                }\n                var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  remoteDtlsParameters.role = 'server';\n                }\n\n                if (!self.usingBundle || sdpMLineIndex === 0) {\n                  iceTransport.start(iceGatherer, remoteIceParameters,\n                      isIceLite ? 'controlling' : 'controlled');\n                  dtlsTransport.start(remoteDtlsParameters);\n                }\n\n                // Calculate intersection of capabilities.\n                var params = self._getCommonCapabilities(localCapabilities,\n                    remoteCapabilities);\n\n                // Start the RTCRtpSender. The RTCRtpReceiver for this\n                // transceiver has already been started in setRemoteDescription.\n                self._transceive(transceiver,\n                    params.codecs.length > 0,\n                    false);\n              }\n            });\n          }\n\n          this.localDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-local-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n\n          // If a success callback was provided, emit ICE candidates after it\n          // has been executed. Otherwise, emit callback after the Promise is\n          // resolved.\n          var hasCallback = arguments.length > 1 &&\n            typeof arguments[1] === 'function';\n          if (hasCallback) {\n            var cb = arguments[1];\n            window.setTimeout(function() {\n              cb();\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              self._emitBufferedCandidates();\n            }, 0);\n          }\n          var p = Promise.resolve();\n          p.then(function() {\n            if (!hasCallback) {\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              // Usually candidates will be emitted earlier.\n              window.setTimeout(self._emitBufferedCandidates.bind(self), 500);\n            }\n          });\n          return p;\n        };\n\n    window.RTCPeerConnection.prototype.setRemoteDescription =\n        function(description) {\n          var self = this;\n          var stream = new MediaStream();\n          var receiverList = [];\n          var sections = SDPUtils.splitSections(description.sdp);\n          var sessionpart = sections.shift();\n          var isIceLite = SDPUtils.matchPrefix(sessionpart,\n              'a=ice-lite').length > 0;\n          this.usingBundle = SDPUtils.matchPrefix(sessionpart,\n              'a=group:BUNDLE ').length > 0;\n          sections.forEach(function(mediaSection, sdpMLineIndex) {\n            var lines = SDPUtils.splitLines(mediaSection);\n            var mline = lines[0].substr(2).split(' ');\n            var kind = mline[0];\n            var rejected = mline[1] === '0';\n            var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n\n            var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:');\n            if (mid.length) {\n              mid = mid[0].substr(6);\n            } else {\n              mid = SDPUtils.generateIdentifier();\n            }\n\n            // Reject datachannels which are not implemented yet.\n            if (kind === 'application' && mline[2] === 'DTLS/SCTP') {\n              self.transceivers[sdpMLineIndex] = {\n                mid: mid,\n                isDatachannel: true\n              };\n              return;\n            }\n\n            var transceiver;\n            var iceGatherer;\n            var iceTransport;\n            var dtlsTransport;\n            var rtpSender;\n            var rtpReceiver;\n            var sendEncodingParameters;\n            var recvEncodingParameters;\n            var localCapabilities;\n\n            var track;\n            // FIXME: ensure the mediaSection has rtcp-mux set.\n            var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n            var remoteIceParameters;\n            var remoteDtlsParameters;\n            if (!rejected) {\n              remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters.role = 'client';\n            }\n            recvEncodingParameters =\n                SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n            var cname;\n            // Gets the first SSRC. Note that with RTX there might be multiple\n            // SSRCs.\n            var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n                .map(function(line) {\n                  return SDPUtils.parseSsrcMedia(line);\n                })\n                .filter(function(obj) {\n                  return obj.attribute === 'cname';\n                })[0];\n            if (remoteSsrc) {\n              cname = remoteSsrc.value;\n            }\n\n            var isComplete = SDPUtils.matchPrefix(mediaSection,\n                'a=end-of-candidates', sessionpart).length > 0;\n            var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                .map(function(cand) {\n                  return SDPUtils.parseCandidate(cand);\n                })\n                .filter(function(cand) {\n                  return cand.component === '1';\n                });\n            if (description.type === 'offer' && !rejected) {\n              var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n                iceGatherer: self.transceivers[0].iceGatherer,\n                iceTransport: self.transceivers[0].iceTransport,\n                dtlsTransport: self.transceivers[0].dtlsTransport\n              } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n              if (isComplete) {\n                transports.iceTransport.setRemoteCandidates(cands);\n              }\n\n              localCapabilities = RTCRtpReceiver.getCapabilities(kind);\n\n              // filter RTX until additional stuff needed for RTX is implemented\n              // in adapter.js\n              localCapabilities.codecs = localCapabilities.codecs.filter(\n                  function(codec) {\n                    return codec.name !== 'rtx';\n                  });\n\n              sendEncodingParameters = [{\n                ssrc: (2 * sdpMLineIndex + 2) * 1001\n              }];\n\n              rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n\n              track = rtpReceiver.track;\n              receiverList.push([track, rtpReceiver]);\n              // FIXME: not correct when there are multiple streams but that is\n              // not currently supported in this shim.\n              stream.addTrack(track);\n\n              // FIXME: look at direction.\n              if (self.localStreams.length > 0 &&\n                  self.localStreams[0].getTracks().length >= sdpMLineIndex) {\n                var localTrack;\n                if (kind === 'audio') {\n                  localTrack = self.localStreams[0].getAudioTracks()[0];\n                } else if (kind === 'video') {\n                  localTrack = self.localStreams[0].getVideoTracks()[0];\n                }\n                if (localTrack) {\n                  rtpSender = new RTCRtpSender(localTrack,\n                      transports.dtlsTransport);\n                }\n              }\n\n              self.transceivers[sdpMLineIndex] = {\n                iceGatherer: transports.iceGatherer,\n                iceTransport: transports.iceTransport,\n                dtlsTransport: transports.dtlsTransport,\n                localCapabilities: localCapabilities,\n                remoteCapabilities: remoteCapabilities,\n                rtpSender: rtpSender,\n                rtpReceiver: rtpReceiver,\n                kind: kind,\n                mid: mid,\n                cname: cname,\n                sendEncodingParameters: sendEncodingParameters,\n                recvEncodingParameters: recvEncodingParameters\n              };\n              // Start the RTCRtpReceiver now. The RTPSender is started in\n              // setLocalDescription.\n              self._transceive(self.transceivers[sdpMLineIndex],\n                  false,\n                  direction === 'sendrecv' || direction === 'sendonly');\n            } else if (description.type === 'answer' && !rejected) {\n              transceiver = self.transceivers[sdpMLineIndex];\n              iceGatherer = transceiver.iceGatherer;\n              iceTransport = transceiver.iceTransport;\n              dtlsTransport = transceiver.dtlsTransport;\n              rtpSender = transceiver.rtpSender;\n              rtpReceiver = transceiver.rtpReceiver;\n              sendEncodingParameters = transceiver.sendEncodingParameters;\n              localCapabilities = transceiver.localCapabilities;\n\n              self.transceivers[sdpMLineIndex].recvEncodingParameters =\n                  recvEncodingParameters;\n              self.transceivers[sdpMLineIndex].remoteCapabilities =\n                  remoteCapabilities;\n              self.transceivers[sdpMLineIndex].cname = cname;\n\n              if ((isIceLite || isComplete) && cands.length) {\n                iceTransport.setRemoteCandidates(cands);\n              }\n              if (!self.usingBundle || sdpMLineIndex === 0) {\n                iceTransport.start(iceGatherer, remoteIceParameters,\n                    'controlling');\n                dtlsTransport.start(remoteDtlsParameters);\n              }\n\n              self._transceive(transceiver,\n                  direction === 'sendrecv' || direction === 'recvonly',\n                  direction === 'sendrecv' || direction === 'sendonly');\n\n              if (rtpReceiver &&\n                  (direction === 'sendrecv' || direction === 'sendonly')) {\n                track = rtpReceiver.track;\n                receiverList.push([track, rtpReceiver]);\n                stream.addTrack(track);\n              } else {\n                // FIXME: actually the receiver should be created later.\n                delete transceiver.rtpReceiver;\n              }\n            }\n          });\n\n          this.remoteDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-remote-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n          if (stream.getTracks().length) {\n            self.remoteStreams.push(stream);\n            window.setTimeout(function() {\n              var event = new Event('addstream');\n              event.stream = stream;\n              self.dispatchEvent(event);\n              if (self.onaddstream !== null) {\n                window.setTimeout(function() {\n                  self.onaddstream(event);\n                }, 0);\n              }\n\n              receiverList.forEach(function(item) {\n                var track = item[0];\n                var receiver = item[1];\n                var trackEvent = new Event('track');\n                trackEvent.track = track;\n                trackEvent.receiver = receiver;\n                trackEvent.streams = [stream];\n                self.dispatchEvent(event);\n                if (self.ontrack !== null) {\n                  window.setTimeout(function() {\n                    self.ontrack(trackEvent);\n                  }, 0);\n                }\n              });\n            }, 0);\n          }\n          if (arguments.length > 1 && typeof arguments[1] === 'function') {\n            window.setTimeout(arguments[1], 0);\n          }\n          return Promise.resolve();\n        };\n\n    window.RTCPeerConnection.prototype.close = function() {\n      this.transceivers.forEach(function(transceiver) {\n        /* not yet\n        if (transceiver.iceGatherer) {\n          transceiver.iceGatherer.close();\n        }\n        */\n        if (transceiver.iceTransport) {\n          transceiver.iceTransport.stop();\n        }\n        if (transceiver.dtlsTransport) {\n          transceiver.dtlsTransport.stop();\n        }\n        if (transceiver.rtpSender) {\n          transceiver.rtpSender.stop();\n        }\n        if (transceiver.rtpReceiver) {\n          transceiver.rtpReceiver.stop();\n        }\n      });\n      // FIXME: clean up tracks, local streams, remote streams, etc\n      this._updateSignalingState('closed');\n    };\n\n    // Update the signaling state.\n    window.RTCPeerConnection.prototype._updateSignalingState =\n        function(newState) {\n          this.signalingState = newState;\n          var event = new Event('signalingstatechange');\n          this.dispatchEvent(event);\n          if (this.onsignalingstatechange !== null) {\n            this.onsignalingstatechange(event);\n          }\n        };\n\n    // Determine whether to fire the negotiationneeded event.\n    window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded =\n        function() {\n          // Fire away (for now).\n          var event = new Event('negotiationneeded');\n          this.dispatchEvent(event);\n          if (this.onnegotiationneeded !== null) {\n            this.onnegotiationneeded(event);\n          }\n        };\n\n    // Update the connection state.\n    window.RTCPeerConnection.prototype._updateConnectionState = function() {\n      var self = this;\n      var newState;\n      var states = {\n        'new': 0,\n        closed: 0,\n        connecting: 0,\n        checking: 0,\n        connected: 0,\n        completed: 0,\n        failed: 0\n      };\n      this.transceivers.forEach(function(transceiver) {\n        states[transceiver.iceTransport.state]++;\n        states[transceiver.dtlsTransport.state]++;\n      });\n      // ICETransport.completed and connected are the same for this purpose.\n      states.connected += states.completed;\n\n      newState = 'new';\n      if (states.failed > 0) {\n        newState = 'failed';\n      } else if (states.connecting > 0 || states.checking > 0) {\n        newState = 'connecting';\n      } else if (states.disconnected > 0) {\n        newState = 'disconnected';\n      } else if (states.new > 0) {\n        newState = 'new';\n      } else if (states.connected > 0 || states.completed > 0) {\n        newState = 'connected';\n      }\n\n      if (newState !== self.iceConnectionState) {\n        self.iceConnectionState = newState;\n        var event = new Event('iceconnectionstatechange');\n        this.dispatchEvent(event);\n        if (this.oniceconnectionstatechange !== null) {\n          this.oniceconnectionstatechange(event);\n        }\n      }\n    };\n\n    window.RTCPeerConnection.prototype.createOffer = function() {\n      var self = this;\n      if (this._pendingOffer) {\n        throw new Error('createOffer called while there is a pending offer.');\n      }\n      var offerOptions;\n      if (arguments.length === 1 && typeof arguments[0] !== 'function') {\n        offerOptions = arguments[0];\n      } else if (arguments.length === 3) {\n        offerOptions = arguments[2];\n      }\n\n      var tracks = [];\n      var numAudioTracks = 0;\n      var numVideoTracks = 0;\n      // Default to sendrecv.\n      if (this.localStreams.length) {\n        numAudioTracks = this.localStreams[0].getAudioTracks().length;\n        numVideoTracks = this.localStreams[0].getVideoTracks().length;\n      }\n      // Determine number of audio and video tracks we need to send/recv.\n      if (offerOptions) {\n        // Reject Chrome legacy constraints.\n        if (offerOptions.mandatory || offerOptions.optional) {\n          throw new TypeError(\n              'Legacy mandatory/optional constraints not supported.');\n        }\n        if (offerOptions.offerToReceiveAudio !== undefined) {\n          numAudioTracks = offerOptions.offerToReceiveAudio;\n        }\n        if (offerOptions.offerToReceiveVideo !== undefined) {\n          numVideoTracks = offerOptions.offerToReceiveVideo;\n        }\n      }\n      if (this.localStreams.length) {\n        // Push local streams.\n        this.localStreams[0].getTracks().forEach(function(track) {\n          tracks.push({\n            kind: track.kind,\n            track: track,\n            wantReceive: track.kind === 'audio' ?\n                numAudioTracks > 0 : numVideoTracks > 0\n          });\n          if (track.kind === 'audio') {\n            numAudioTracks--;\n          } else if (track.kind === 'video') {\n            numVideoTracks--;\n          }\n        });\n      }\n      // Create M-lines for recvonly streams.\n      while (numAudioTracks > 0 || numVideoTracks > 0) {\n        if (numAudioTracks > 0) {\n          tracks.push({\n            kind: 'audio',\n            wantReceive: true\n          });\n          numAudioTracks--;\n        }\n        if (numVideoTracks > 0) {\n          tracks.push({\n            kind: 'video',\n            wantReceive: true\n          });\n          numVideoTracks--;\n        }\n      }\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      var transceivers = [];\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        // For each track, create an ice gatherer, ice transport,\n        // dtls transport, potentially rtpsender and rtpreceiver.\n        var track = mline.track;\n        var kind = mline.kind;\n        var mid = SDPUtils.generateIdentifier();\n\n        var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n          iceGatherer: transceivers[0].iceGatherer,\n          iceTransport: transceivers[0].iceTransport,\n          dtlsTransport: transceivers[0].dtlsTransport\n        } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n        var localCapabilities = RTCRtpSender.getCapabilities(kind);\n        // filter RTX until additional stuff needed for RTX is implemented\n        // in adapter.js\n        localCapabilities.codecs = localCapabilities.codecs.filter(\n            function(codec) {\n              return codec.name !== 'rtx';\n            });\n        localCapabilities.codecs.forEach(function(codec) {\n          // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552\n          // by adding level-asymmetry-allowed=1\n          if (codec.name === 'H264' &&\n              codec.parameters['level-asymmetry-allowed'] === undefined) {\n            codec.parameters['level-asymmetry-allowed'] = '1';\n          }\n        });\n\n        var rtpSender;\n        var rtpReceiver;\n\n        // generate an ssrc now, to be used later in rtpSender.send\n        var sendEncodingParameters = [{\n          ssrc: (2 * sdpMLineIndex + 1) * 1001\n        }];\n        if (track) {\n          rtpSender = new RTCRtpSender(track, transports.dtlsTransport);\n        }\n\n        if (mline.wantReceive) {\n          rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n        }\n\n        transceivers[sdpMLineIndex] = {\n          iceGatherer: transports.iceGatherer,\n          iceTransport: transports.iceTransport,\n          dtlsTransport: transports.dtlsTransport,\n          localCapabilities: localCapabilities,\n          remoteCapabilities: null,\n          rtpSender: rtpSender,\n          rtpReceiver: rtpReceiver,\n          kind: kind,\n          mid: mid,\n          sendEncodingParameters: sendEncodingParameters,\n          recvEncodingParameters: null\n        };\n      });\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        var transceiver = transceivers[sdpMLineIndex];\n        sdp += SDPUtils.writeMediaSection(transceiver,\n            transceiver.localCapabilities, 'offer', self.localStreams[0]);\n      });\n\n      this._pendingOffer = transceivers;\n      var desc = new RTCSessionDescription({\n        type: 'offer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.createAnswer = function() {\n      var self = this;\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      this.transceivers.forEach(function(transceiver) {\n        if (transceiver.isDatachannel) {\n          sdp += 'm=application 0 DTLS/SCTP 5000\\r\\n' +\n              'c=IN IP4 0.0.0.0\\r\\n' +\n              'a=mid:' + transceiver.mid + '\\r\\n';\n          return;\n        }\n        // Calculate intersection of capabilities.\n        var commonCapabilities = self._getCommonCapabilities(\n            transceiver.localCapabilities,\n            transceiver.remoteCapabilities);\n\n        sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities,\n            'answer', self.localStreams[0]);\n      });\n\n      var desc = new RTCSessionDescription({\n        type: 'answer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n      if (!candidate) {\n        this.transceivers.forEach(function(transceiver) {\n          transceiver.iceTransport.addRemoteCandidate({});\n        });\n      } else {\n        var mLineIndex = candidate.sdpMLineIndex;\n        if (candidate.sdpMid) {\n          for (var i = 0; i < this.transceivers.length; i++) {\n            if (this.transceivers[i].mid === candidate.sdpMid) {\n              mLineIndex = i;\n              break;\n            }\n          }\n        }\n        var transceiver = this.transceivers[mLineIndex];\n        if (transceiver) {\n          var cand = Object.keys(candidate.candidate).length > 0 ?\n              SDPUtils.parseCandidate(candidate.candidate) : {};\n          // Ignore Chrome's invalid candidates since Edge does not like them.\n          if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) {\n            return;\n          }\n          // Ignore RTCP candidates, we assume RTCP-MUX.\n          if (cand.component !== '1') {\n            return;\n          }\n          // A dirty hack to make samples work.\n          if (cand.type === 'endOfCandidates') {\n            cand = {};\n          }\n          transceiver.iceTransport.addRemoteCandidate(cand);\n\n          // update the remoteDescription.\n          var sections = SDPUtils.splitSections(this.remoteDescription.sdp);\n          sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim()\n              : 'a=end-of-candidates') + '\\r\\n';\n          this.remoteDescription.sdp = sections.join('');\n        }\n      }\n      if (arguments.length > 1 && typeof arguments[1] === 'function') {\n        window.setTimeout(arguments[1], 0);\n      }\n      return Promise.resolve();\n    };\n\n    window.RTCPeerConnection.prototype.getStats = function() {\n      var promises = [];\n      this.transceivers.forEach(function(transceiver) {\n        ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n            'dtlsTransport'].forEach(function(method) {\n              if (transceiver[method]) {\n                promises.push(transceiver[method].getStats());\n              }\n            });\n      });\n      var cb = arguments.length > 1 && typeof arguments[1] === 'function' &&\n          arguments[1];\n      return new Promise(function(resolve) {\n        // shim getStats with maplike support\n        var results = new Map();\n        Promise.all(promises).then(function(res) {\n          res.forEach(function(result) {\n            Object.keys(result).forEach(function(id) {\n              results.set(id, result[id]);\n              results[id] = result[id];\n            });\n          });\n          if (cb) {\n            window.setTimeout(cb, 0, results);\n          }\n          resolve(results);\n        });\n      });\n    };\n  }\n};\n\n// Expose public methods.\nmodule.exports = {\n  shimPeerConnection: edgeShim.shimPeerConnection,\n  shimGetUserMedia: require('./getusermedia')\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/webrtc-adapter/src/js/edge/edge_shim.js\n// module id = 463\n// module chunks = 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Severity: Minor
Found in app/assets/javascripts/metamaps.secret.bundle.js by fixme

FIXME found
Open

    eval("/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = __webpack_require__(452);\nvar logging = __webpack_require__(479).log;\n\nvar edgeShim = {\n  shimPeerConnection: function() {\n    if (window.RTCIceGatherer) {\n      // ORTC defines an RTCIceCandidate object but no constructor.\n      // Not implemented in Edge.\n      if (!window.RTCIceCandidate) {\n        window.RTCIceCandidate = function(args) {\n          return args;\n        };\n      }\n      // ORTC does not have a session description object but\n      // other browsers (i.e. Chrome) that will support both PC and ORTC\n      // in the future might have this defined already.\n      if (!window.RTCSessionDescription) {\n        window.RTCSessionDescription = function(args) {\n          return args;\n        };\n      }\n    }\n\n    window.RTCPeerConnection = function(config) {\n      var self = this;\n\n      var _eventTarget = document.createDocumentFragment();\n      ['addEventListener', 'removeEventListener', 'dispatchEvent']\n          .forEach(function(method) {\n            self[method] = _eventTarget[method].bind(_eventTarget);\n          });\n\n      this.onicecandidate = null;\n      this.onaddstream = null;\n      this.ontrack = null;\n      this.onremovestream = null;\n      this.onsignalingstatechange = null;\n      this.oniceconnectionstatechange = null;\n      this.onnegotiationneeded = null;\n      this.ondatachannel = null;\n\n      this.localStreams = [];\n      this.remoteStreams = [];\n      this.getLocalStreams = function() {\n        return self.localStreams;\n      };\n      this.getRemoteStreams = function() {\n        return self.remoteStreams;\n      };\n\n      this.localDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.remoteDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.signalingState = 'stable';\n      this.iceConnectionState = 'new';\n      this.iceGatheringState = 'new';\n\n      this.iceOptions = {\n        gatherPolicy: 'all',\n        iceServers: []\n      };\n      if (config && config.iceTransportPolicy) {\n        switch (config.iceTransportPolicy) {\n          case 'all':\n          case 'relay':\n            this.iceOptions.gatherPolicy = config.iceTransportPolicy;\n            break;\n          case 'none':\n            // FIXME: remove once implementation and spec have added this.\n            throw new TypeError('iceTransportPolicy \"none\" not supported');\n          default:\n            // don't set iceTransportPolicy.\n            break;\n        }\n      }\n      this.usingBundle = config && config.bundlePolicy === 'max-bundle';\n\n      if (config && config.iceServers) {\n        // Edge does not like\n        // 1) stun:\n        // 2) turn: that does not have all of turn:host:port?transport=udp\n        var iceServers = JSON.parse(JSON.stringify(config.iceServers));\n        this.iceOptions.iceServers = iceServers.filter(function(server) {\n          if (server && server.urls) {\n            var urls = server.urls;\n            if (typeof urls === 'string') {\n              urls = [urls];\n            }\n            urls = urls.filter(function(url) {\n              return url.indexOf('turn:') === 0 &&\n                  url.indexOf('transport=udp') !== -1;\n            })[0];\n            return !!urls;\n          }\n          return false;\n        });\n      }\n\n      // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n      // everything that is needed to describe a SDP m-line.\n      this.transceivers = [];\n\n      // since the iceGatherer is currently created in createOffer but we\n      // must not emit candidates until after setLocalDescription we buffer\n      // them in this array.\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype._emitBufferedCandidates = function() {\n      var self = this;\n      var sections = SDPUtils.splitSections(self.localDescription.sdp);\n      // FIXME: need to apply ice candidates in a way which is async but\n      // in-order\n      this._localIceCandidatesBuffer.forEach(function(event) {\n        var end = !event.candidate || Object.keys(event.candidate).length === 0;\n        if (end) {\n          for (var j = 1; j < sections.length; j++) {\n            if (sections[j].indexOf('\\r\\na=end-of-candidates\\r\\n') === -1) {\n              sections[j] += 'a=end-of-candidates\\r\\n';\n            }\n          }\n        } else if (event.candidate.candidate.indexOf('typ endOfCandidates')\n            === -1) {\n          sections[event.candidate.sdpMLineIndex + 1] +=\n              'a=' + event.candidate.candidate + '\\r\\n';\n        }\n        self.localDescription.sdp = sections.join('');\n        self.dispatchEvent(event);\n        if (self.onicecandidate !== null) {\n          self.onicecandidate(event);\n        }\n        if (!event.candidate && self.iceGatheringState !== 'complete') {\n          var complete = self.transceivers.every(function(transceiver) {\n            return transceiver.iceGatherer &&\n                transceiver.iceGatherer.state === 'completed';\n          });\n          if (complete) {\n            self.iceGatheringState = 'complete';\n          }\n        }\n      });\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype.addStream = function(stream) {\n      // Clone is necessary for local demos mostly, attaching directly\n      // to two different senders does not work (build 10547).\n      this.localStreams.push(stream.clone());\n      this._maybeFireNegotiationNeeded();\n    };\n\n    window.RTCPeerConnection.prototype.removeStream = function(stream) {\n      var idx = this.localStreams.indexOf(stream);\n      if (idx > -1) {\n        this.localStreams.splice(idx, 1);\n        this._maybeFireNegotiationNeeded();\n      }\n    };\n\n    window.RTCPeerConnection.prototype.getSenders = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpSender;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpSender;\n      });\n    };\n\n    window.RTCPeerConnection.prototype.getReceivers = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpReceiver;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpReceiver;\n      });\n    };\n\n    // Determines the intersection of local and remote capabilities.\n    window.RTCPeerConnection.prototype._getCommonCapabilities =\n        function(localCapabilities, remoteCapabilities) {\n          var commonCapabilities = {\n            codecs: [],\n            headerExtensions: [],\n            fecMechanisms: []\n          };\n          localCapabilities.codecs.forEach(function(lCodec) {\n            for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n              var rCodec = remoteCapabilities.codecs[i];\n              if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n                  lCodec.clockRate === rCodec.clockRate &&\n                  lCodec.numChannels === rCodec.numChannels) {\n                // push rCodec so we reply with offerer payload type\n                commonCapabilities.codecs.push(rCodec);\n\n                // FIXME: also need to determine intersection between\n                // .rtcpFeedback and .parameters\n                break;\n              }\n            }\n          });\n\n          localCapabilities.headerExtensions\n              .forEach(function(lHeaderExtension) {\n                for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n                     i++) {\n                  var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n                  if (lHeaderExtension.uri === rHeaderExtension.uri) {\n                    commonCapabilities.headerExtensions.push(rHeaderExtension);\n                    break;\n                  }\n                }\n              });\n\n          // FIXME: fecMechanisms\n          return commonCapabilities;\n        };\n\n    // Create ICE gatherer, ICE transport and DTLS transport.\n    window.RTCPeerConnection.prototype._createIceAndDtlsTransports =\n        function(mid, sdpMLineIndex) {\n          var self = this;\n          var iceGatherer = new RTCIceGatherer(self.iceOptions);\n          var iceTransport = new RTCIceTransport(iceGatherer);\n          iceGatherer.onlocalcandidate = function(evt) {\n            var event = new Event('icecandidate');\n            event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n            var cand = evt.candidate;\n            var end = !cand || Object.keys(cand).length === 0;\n            // Edge emits an empty object for RTCIceCandidateComplete‥\n            if (end) {\n              // polyfill since RTCIceGatherer.state is not implemented in\n              // Edge 10547 yet.\n              if (iceGatherer.state === undefined) {\n                iceGatherer.state = 'completed';\n              }\n\n              // Emit a candidate with type endOfCandidates to make the samples\n              // work. Edge requires addIceCandidate with this empty candidate\n              // to start checking. The real solution is to signal\n              // end-of-candidates to the other side when getting the null\n              // candidate but some apps (like the samples) don't do that.\n              event.candidate.candidate =\n                  'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates';\n            } else {\n              // RTCIceCandidate doesn't have a component, needs to be added\n              cand.component = iceTransport.component === 'RTCP' ? 2 : 1;\n              event.candidate.candidate = SDPUtils.writeCandidate(cand);\n            }\n\n            // update local description.\n            var sections = SDPUtils.splitSections(self.localDescription.sdp);\n            if (event.candidate.candidate.indexOf('typ endOfCandidates')\n                === -1) {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=' + event.candidate.candidate + '\\r\\n';\n            } else {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=end-of-candidates\\r\\n';\n            }\n            self.localDescription.sdp = sections.join('');\n\n            var complete = self.transceivers.every(function(transceiver) {\n              return transceiver.iceGatherer &&\n                  transceiver.iceGatherer.state === 'completed';\n            });\n\n            // Emit candidate if localDescription is set.\n            // Also emits null candidate when all gatherers are complete.\n            switch (self.iceGatheringState) {\n              case 'new':\n                self._localIceCandidatesBuffer.push(event);\n                if (end && complete) {\n                  self._localIceCandidatesBuffer.push(\n                      new Event('icecandidate'));\n                }\n                break;\n              case 'gathering':\n                self._emitBufferedCandidates();\n                self.dispatchEvent(event);\n                if (self.onicecandidate !== null) {\n                  self.onicecandidate(event);\n                }\n                if (complete) {\n                  self.dispatchEvent(new Event('icecandidate'));\n                  if (self.onicecandidate !== null) {\n                    self.onicecandidate(new Event('icecandidate'));\n                  }\n                  self.iceGatheringState = 'complete';\n                }\n                break;\n              case 'complete':\n                // should not happen... currently!\n                break;\n              default: // no-op.\n                break;\n            }\n          };\n          iceTransport.onicestatechange = function() {\n            self._updateConnectionState();\n          };\n\n          var dtlsTransport = new RTCDtlsTransport(iceTransport);\n          dtlsTransport.ondtlsstatechange = function() {\n            self._updateConnectionState();\n          };\n          dtlsTransport.onerror = function() {\n            // onerror does not set state to failed by itself.\n            dtlsTransport.state = 'failed';\n            self._updateConnectionState();\n          };\n\n          return {\n            iceGatherer: iceGatherer,\n            iceTransport: iceTransport,\n            dtlsTransport: dtlsTransport\n          };\n        };\n\n    // Start the RTP Sender and Receiver for a transceiver.\n    window.RTCPeerConnection.prototype._transceive = function(transceiver,\n        send, recv) {\n      var params = this._getCommonCapabilities(transceiver.localCapabilities,\n          transceiver.remoteCapabilities);\n      if (send && transceiver.rtpSender) {\n        params.encodings = transceiver.sendEncodingParameters;\n        params.rtcp = {\n          cname: SDPUtils.localCName\n        };\n        if (transceiver.recvEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpSender.send(params);\n      }\n      if (recv && transceiver.rtpReceiver) {\n        params.encodings = transceiver.recvEncodingParameters;\n        params.rtcp = {\n          cname: transceiver.cname\n        };\n        if (transceiver.sendEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpReceiver.receive(params);\n      }\n    };\n\n    window.RTCPeerConnection.prototype.setLocalDescription =\n        function(description) {\n          var self = this;\n          var sections;\n          var sessionpart;\n          if (description.type === 'offer') {\n            // FIXME: What was the purpose of this empty if statement?\n            // if (!this._pendingOffer) {\n            // } else {\n            if (this._pendingOffer) {\n              // VERY limited support for SDP munging. Limited to:\n              // * changing the order of codecs\n              sections = SDPUtils.splitSections(description.sdp);\n              sessionpart = sections.shift();\n              sections.forEach(function(mediaSection, sdpMLineIndex) {\n                var caps = SDPUtils.parseRtpParameters(mediaSection);\n                self._pendingOffer[sdpMLineIndex].localCapabilities = caps;\n              });\n              this.transceivers = this._pendingOffer;\n              delete this._pendingOffer;\n            }\n          } else if (description.type === 'answer') {\n            sections = SDPUtils.splitSections(self.remoteDescription.sdp);\n            sessionpart = sections.shift();\n            var isIceLite = SDPUtils.matchPrefix(sessionpart,\n                'a=ice-lite').length > 0;\n            sections.forEach(function(mediaSection, sdpMLineIndex) {\n              var transceiver = self.transceivers[sdpMLineIndex];\n              var iceGatherer = transceiver.iceGatherer;\n              var iceTransport = transceiver.iceTransport;\n              var dtlsTransport = transceiver.dtlsTransport;\n              var localCapabilities = transceiver.localCapabilities;\n              var remoteCapabilities = transceiver.remoteCapabilities;\n              var rejected = mediaSection.split('\\n', 1)[0]\n                  .split(' ', 2)[1] === '0';\n\n              if (!rejected) {\n                var remoteIceParameters = SDPUtils.getIceParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                  .map(function(cand) {\n                    return SDPUtils.parseCandidate(cand);\n                  })\n                  .filter(function(cand) {\n                    return cand.component === '1';\n                  });\n                  // ice-lite only includes host candidates in the SDP so we can\n                  // use setRemoteCandidates (which implies an\n                  // RTCIceCandidateComplete)\n                  if (cands.length) {\n                    iceTransport.setRemoteCandidates(cands);\n                  }\n                }\n                var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  remoteDtlsParameters.role = 'server';\n                }\n\n                if (!self.usingBundle || sdpMLineIndex === 0) {\n                  iceTransport.start(iceGatherer, remoteIceParameters,\n                      isIceLite ? 'controlling' : 'controlled');\n                  dtlsTransport.start(remoteDtlsParameters);\n                }\n\n                // Calculate intersection of capabilities.\n                var params = self._getCommonCapabilities(localCapabilities,\n                    remoteCapabilities);\n\n                // Start the RTCRtpSender. The RTCRtpReceiver for this\n                // transceiver has already been started in setRemoteDescription.\n                self._transceive(transceiver,\n                    params.codecs.length > 0,\n                    false);\n              }\n            });\n          }\n\n          this.localDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-local-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n\n          // If a success callback was provided, emit ICE candidates after it\n          // has been executed. Otherwise, emit callback after the Promise is\n          // resolved.\n          var hasCallback = arguments.length > 1 &&\n            typeof arguments[1] === 'function';\n          if (hasCallback) {\n            var cb = arguments[1];\n            window.setTimeout(function() {\n              cb();\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              self._emitBufferedCandidates();\n            }, 0);\n          }\n          var p = Promise.resolve();\n          p.then(function() {\n            if (!hasCallback) {\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              // Usually candidates will be emitted earlier.\n              window.setTimeout(self._emitBufferedCandidates.bind(self), 500);\n            }\n          });\n          return p;\n        };\n\n    window.RTCPeerConnection.prototype.setRemoteDescription =\n        function(description) {\n          var self = this;\n          var stream = new MediaStream();\n          var receiverList = [];\n          var sections = SDPUtils.splitSections(description.sdp);\n          var sessionpart = sections.shift();\n          var isIceLite = SDPUtils.matchPrefix(sessionpart,\n              'a=ice-lite').length > 0;\n          this.usingBundle = SDPUtils.matchPrefix(sessionpart,\n              'a=group:BUNDLE ').length > 0;\n          sections.forEach(function(mediaSection, sdpMLineIndex) {\n            var lines = SDPUtils.splitLines(mediaSection);\n            var mline = lines[0].substr(2).split(' ');\n            var kind = mline[0];\n            var rejected = mline[1] === '0';\n            var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n\n            var transceiver;\n            var iceGatherer;\n            var iceTransport;\n            var dtlsTransport;\n            var rtpSender;\n            var rtpReceiver;\n            var sendEncodingParameters;\n            var recvEncodingParameters;\n            var localCapabilities;\n\n            var track;\n            // FIXME: ensure the mediaSection has rtcp-mux set.\n            var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n            var remoteIceParameters;\n            var remoteDtlsParameters;\n            if (!rejected) {\n              remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters.role = 'client';\n            }\n            recvEncodingParameters =\n                SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n            var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:');\n            if (mid.length) {\n              mid = mid[0].substr(6);\n            } else {\n              mid = SDPUtils.generateIdentifier();\n            }\n\n            var cname;\n            // Gets the first SSRC. Note that with RTX there might be multiple\n            // SSRCs.\n            var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n                .map(function(line) {\n                  return SDPUtils.parseSsrcMedia(line);\n                })\n                .filter(function(obj) {\n                  return obj.attribute === 'cname';\n                })[0];\n            if (remoteSsrc) {\n              cname = remoteSsrc.value;\n            }\n\n            var isComplete = SDPUtils.matchPrefix(mediaSection,\n                'a=end-of-candidates').length > 0;\n            var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                .map(function(cand) {\n                  return SDPUtils.parseCandidate(cand);\n                })\n                .filter(function(cand) {\n                  return cand.component === '1';\n                });\n            if (description.type === 'offer' && !rejected) {\n              var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n                iceGatherer: self.transceivers[0].iceGatherer,\n                iceTransport: self.transceivers[0].iceTransport,\n                dtlsTransport: self.transceivers[0].dtlsTransport\n              } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n              if (isComplete) {\n                transports.iceTransport.setRemoteCandidates(cands);\n              }\n\n              localCapabilities = RTCRtpReceiver.getCapabilities(kind);\n              sendEncodingParameters = [{\n                ssrc: (2 * sdpMLineIndex + 2) * 1001\n              }];\n\n              rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n\n              track = rtpReceiver.track;\n              receiverList.push([track, rtpReceiver]);\n              // FIXME: not correct when there are multiple streams but that is\n              // not currently supported in this shim.\n              stream.addTrack(track);\n\n              // FIXME: look at direction.\n              if (self.localStreams.length > 0 &&\n                  self.localStreams[0].getTracks().length >= sdpMLineIndex) {\n                // FIXME: actually more complicated, needs to match types etc\n                var localtrack = self.localStreams[0]\n                    .getTracks()[sdpMLineIndex];\n                rtpSender = new RTCRtpSender(localtrack,\n                    transports.dtlsTransport);\n              }\n\n              self.transceivers[sdpMLineIndex] = {\n                iceGatherer: transports.iceGatherer,\n                iceTransport: transports.iceTransport,\n                dtlsTransport: transports.dtlsTransport,\n                localCapabilities: localCapabilities,\n                remoteCapabilities: remoteCapabilities,\n                rtpSender: rtpSender,\n                rtpReceiver: rtpReceiver,\n                kind: kind,\n                mid: mid,\n                cname: cname,\n                sendEncodingParameters: sendEncodingParameters,\n                recvEncodingParameters: recvEncodingParameters\n              };\n              // Start the RTCRtpReceiver now. The RTPSender is started in\n              // setLocalDescription.\n              self._transceive(self.transceivers[sdpMLineIndex],\n                  false,\n                  direction === 'sendrecv' || direction === 'sendonly');\n            } else if (description.type === 'answer' && !rejected) {\n              transceiver = self.transceivers[sdpMLineIndex];\n              iceGatherer = transceiver.iceGatherer;\n              iceTransport = transceiver.iceTransport;\n              dtlsTransport = transceiver.dtlsTransport;\n              rtpSender = transceiver.rtpSender;\n              rtpReceiver = transceiver.rtpReceiver;\n              sendEncodingParameters = transceiver.sendEncodingParameters;\n              localCapabilities = transceiver.localCapabilities;\n\n              self.transceivers[sdpMLineIndex].recvEncodingParameters =\n                  recvEncodingParameters;\n              self.transceivers[sdpMLineIndex].remoteCapabilities =\n                  remoteCapabilities;\n              self.transceivers[sdpMLineIndex].cname = cname;\n\n              if ((isIceLite || isComplete) && cands.length) {\n                iceTransport.setRemoteCandidates(cands);\n              }\n              if (!self.usingBundle || sdpMLineIndex === 0) {\n                iceTransport.start(iceGatherer, remoteIceParameters,\n                    'controlling');\n                dtlsTransport.start(remoteDtlsParameters);\n              }\n\n              self._transceive(transceiver,\n                  direction === 'sendrecv' || direction === 'recvonly',\n                  direction === 'sendrecv' || direction === 'sendonly');\n\n              if (rtpReceiver &&\n                  (direction === 'sendrecv' || direction === 'sendonly')) {\n                track = rtpReceiver.track;\n                receiverList.push([track, rtpReceiver]);\n                stream.addTrack(track);\n              } else {\n                // FIXME: actually the receiver should be created later.\n                delete transceiver.rtpReceiver;\n              }\n            }\n          });\n\n          this.remoteDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-remote-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n          if (stream.getTracks().length) {\n            self.remoteStreams.push(stream);\n            window.setTimeout(function() {\n              var event = new Event('addstream');\n              event.stream = stream;\n              self.dispatchEvent(event);\n              if (self.onaddstream !== null) {\n                window.setTimeout(function() {\n                  self.onaddstream(event);\n                }, 0);\n              }\n\n              receiverList.forEach(function(item) {\n                var track = item[0];\n                var receiver = item[1];\n                var trackEvent = new Event('track');\n                trackEvent.track = track;\n                trackEvent.receiver = receiver;\n                trackEvent.streams = [stream];\n                self.dispatchEvent(event);\n                if (self.ontrack !== null) {\n                  window.setTimeout(function() {\n                    self.ontrack(trackEvent);\n                  }, 0);\n                }\n              });\n            }, 0);\n          }\n          if (arguments.length > 1 && typeof arguments[1] === 'function') {\n            window.setTimeout(arguments[1], 0);\n          }\n          return Promise.resolve();\n        };\n\n    window.RTCPeerConnection.prototype.close = function() {\n      this.transceivers.forEach(function(transceiver) {\n        /* not yet\n        if (transceiver.iceGatherer) {\n          transceiver.iceGatherer.close();\n        }\n        */\n        if (transceiver.iceTransport) {\n          transceiver.iceTransport.stop();\n        }\n        if (transceiver.dtlsTransport) {\n          transceiver.dtlsTransport.stop();\n        }\n        if (transceiver.rtpSender) {\n          transceiver.rtpSender.stop();\n        }\n        if (transceiver.rtpReceiver) {\n          transceiver.rtpReceiver.stop();\n        }\n      });\n      // FIXME: clean up tracks, local streams, remote streams, etc\n      this._updateSignalingState('closed');\n    };\n\n    // Update the signaling state.\n    window.RTCPeerConnection.prototype._updateSignalingState =\n        function(newState) {\n          this.signalingState = newState;\n          var event = new Event('signalingstatechange');\n          this.dispatchEvent(event);\n          if (this.onsignalingstatechange !== null) {\n            this.onsignalingstatechange(event);\n          }\n        };\n\n    // Determine whether to fire the negotiationneeded event.\n    window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded =\n        function() {\n          // Fire away (for now).\n          var event = new Event('negotiationneeded');\n          this.dispatchEvent(event);\n          if (this.onnegotiationneeded !== null) {\n            this.onnegotiationneeded(event);\n          }\n        };\n\n    // Update the connection state.\n    window.RTCPeerConnection.prototype._updateConnectionState = function() {\n      var self = this;\n      var newState;\n      var states = {\n        'new': 0,\n        closed: 0,\n        connecting: 0,\n        checking: 0,\n        connected: 0,\n        completed: 0,\n        failed: 0\n      };\n      this.transceivers.forEach(function(transceiver) {\n        states[transceiver.iceTransport.state]++;\n        states[transceiver.dtlsTransport.state]++;\n      });\n      // ICETransport.completed and connected are the same for this purpose.\n      states.connected += states.completed;\n\n      newState = 'new';\n      if (states.failed > 0) {\n        newState = 'failed';\n      } else if (states.connecting > 0 || states.checking > 0) {\n        newState = 'connecting';\n      } else if (states.disconnected > 0) {\n        newState = 'disconnected';\n      } else if (states.new > 0) {\n        newState = 'new';\n      } else if (states.connected > 0 || states.completed > 0) {\n        newState = 'connected';\n      }\n\n      if (newState !== self.iceConnectionState) {\n        self.iceConnectionState = newState;\n        var event = new Event('iceconnectionstatechange');\n        this.dispatchEvent(event);\n        if (this.oniceconnectionstatechange !== null) {\n          this.oniceconnectionstatechange(event);\n        }\n      }\n    };\n\n    window.RTCPeerConnection.prototype.createOffer = function() {\n      var self = this;\n      if (this._pendingOffer) {\n        throw new Error('createOffer called while there is a pending offer.');\n      }\n      var offerOptions;\n      if (arguments.length === 1 && typeof arguments[0] !== 'function') {\n        offerOptions = arguments[0];\n      } else if (arguments.length === 3) {\n        offerOptions = arguments[2];\n      }\n\n      var tracks = [];\n      var numAudioTracks = 0;\n      var numVideoTracks = 0;\n      // Default to sendrecv.\n      if (this.localStreams.length) {\n        numAudioTracks = this.localStreams[0].getAudioTracks().length;\n        numVideoTracks = this.localStreams[0].getVideoTracks().length;\n      }\n      // Determine number of audio and video tracks we need to send/recv.\n      if (offerOptions) {\n        // Reject Chrome legacy constraints.\n        if (offerOptions.mandatory || offerOptions.optional) {\n          throw new TypeError(\n              'Legacy mandatory/optional constraints not supported.');\n        }\n        if (offerOptions.offerToReceiveAudio !== undefined) {\n          numAudioTracks = offerOptions.offerToReceiveAudio;\n        }\n        if (offerOptions.offerToReceiveVideo !== undefined) {\n          numVideoTracks = offerOptions.offerToReceiveVideo;\n        }\n      }\n      if (this.localStreams.length) {\n        // Push local streams.\n        this.localStreams[0].getTracks().forEach(function(track) {\n          tracks.push({\n            kind: track.kind,\n            track: track,\n            wantReceive: track.kind === 'audio' ?\n                numAudioTracks > 0 : numVideoTracks > 0\n          });\n          if (track.kind === 'audio') {\n            numAudioTracks--;\n          } else if (track.kind === 'video') {\n            numVideoTracks--;\n          }\n        });\n      }\n      // Create M-lines for recvonly streams.\n      while (numAudioTracks > 0 || numVideoTracks > 0) {\n        if (numAudioTracks > 0) {\n          tracks.push({\n            kind: 'audio',\n            wantReceive: true\n          });\n          numAudioTracks--;\n        }\n        if (numVideoTracks > 0) {\n          tracks.push({\n            kind: 'video',\n            wantReceive: true\n          });\n          numVideoTracks--;\n        }\n      }\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      var transceivers = [];\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        // For each track, create an ice gatherer, ice transport,\n        // dtls transport, potentially rtpsender and rtpreceiver.\n        var track = mline.track;\n        var kind = mline.kind;\n        var mid = SDPUtils.generateIdentifier();\n\n        var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n          iceGatherer: transceivers[0].iceGatherer,\n          iceTransport: transceivers[0].iceTransport,\n          dtlsTransport: transceivers[0].dtlsTransport\n        } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n        var localCapabilities = RTCRtpSender.getCapabilities(kind);\n        var rtpSender;\n        var rtpReceiver;\n\n        // generate an ssrc now, to be used later in rtpSender.send\n        var sendEncodingParameters = [{\n          ssrc: (2 * sdpMLineIndex + 1) * 1001\n        }];\n        if (track) {\n          rtpSender = new RTCRtpSender(track, transports.dtlsTransport);\n        }\n\n        if (mline.wantReceive) {\n          rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n        }\n\n        transceivers[sdpMLineIndex] = {\n          iceGatherer: transports.iceGatherer,\n          iceTransport: transports.iceTransport,\n          dtlsTransport: transports.dtlsTransport,\n          localCapabilities: localCapabilities,\n          remoteCapabilities: null,\n          rtpSender: rtpSender,\n          rtpReceiver: rtpReceiver,\n          kind: kind,\n          mid: mid,\n          sendEncodingParameters: sendEncodingParameters,\n          recvEncodingParameters: null\n        };\n      });\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        var transceiver = transceivers[sdpMLineIndex];\n        sdp += SDPUtils.writeMediaSection(transceiver,\n            transceiver.localCapabilities, 'offer', self.localStreams[0]);\n      });\n\n      this._pendingOffer = transceivers;\n      var desc = new RTCSessionDescription({\n        type: 'offer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.createAnswer = function() {\n      var self = this;\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      this.transceivers.forEach(function(transceiver) {\n        // Calculate intersection of capabilities.\n        var commonCapabilities = self._getCommonCapabilities(\n            transceiver.localCapabilities,\n            transceiver.remoteCapabilities);\n\n        sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities,\n            'answer', self.localStreams[0]);\n      });\n\n      var desc = new RTCSessionDescription({\n        type: 'answer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n      if (candidate === null) {\n        this.transceivers.forEach(function(transceiver) {\n          transceiver.iceTransport.addRemoteCandidate({});\n        });\n      } else {\n        var mLineIndex = candidate.sdpMLineIndex;\n        if (candidate.sdpMid) {\n          for (var i = 0; i < this.transceivers.length; i++) {\n            if (this.transceivers[i].mid === candidate.sdpMid) {\n              mLineIndex = i;\n              break;\n            }\n          }\n        }\n        var transceiver = this.transceivers[mLineIndex];\n        if (transceiver) {\n          var cand = Object.keys(candidate.candidate).length > 0 ?\n              SDPUtils.parseCandidate(candidate.candidate) : {};\n          // Ignore Chrome's invalid candidates since Edge does not like them.\n          if (cand.protocol === 'tcp' && cand.port === 0) {\n            return;\n          }\n          // Ignore RTCP candidates, we assume RTCP-MUX.\n          if (cand.component !== '1') {\n            return;\n          }\n          // A dirty hack to make samples work.\n          if (cand.type === 'endOfCandidates') {\n            cand = {};\n          }\n          transceiver.iceTransport.addRemoteCandidate(cand);\n\n          // update the remoteDescription.\n          var sections = SDPUtils.splitSections(this.remoteDescription.sdp);\n          sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim()\n              : 'a=end-of-candidates') + '\\r\\n';\n          this.remoteDescription.sdp = sections.join('');\n        }\n      }\n      if (arguments.length > 1 && typeof arguments[1] === 'function') {\n        window.setTimeout(arguments[1], 0);\n      }\n      return Promise.resolve();\n    };\n\n    window.RTCPeerConnection.prototype.getStats = function() {\n      var promises = [];\n      this.transceivers.forEach(function(transceiver) {\n        ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n            'dtlsTransport'].forEach(function(method) {\n              if (transceiver[method]) {\n                promises.push(transceiver[method].getStats());\n              }\n            });\n      });\n      var cb = arguments.length > 1 && typeof arguments[1] === 'function' &&\n          arguments[1];\n      return new Promise(function(resolve) {\n        // shim getStats with maplike support\n        var results = new Map();\n        Promise.all(promises).then(function(res) {\n          res.forEach(function(result) {\n            Object.keys(result).forEach(function(id) {\n              results.set(id, result[id]);\n              results[id] = result[id];\n            });\n          });\n          if (cb) {\n            window.setTimeout(cb, 0, results);\n          }\n          resolve(results);\n        });\n      });\n    };\n  },\n\n  // Attach a media stream to an element.\n  attachMediaStream: function(element, stream) {\n    logging('DEPRECATED, attachMediaStream will soon be removed.');\n    element.srcObject = stream;\n  },\n\n  reattachMediaStream: function(to, from) {\n    logging('DEPRECATED, reattachMediaStream will soon be removed.');\n    to.srcObject = from.srcObject;\n  }\n};\n\n// Expose public methods.\nmodule.exports = {\n  shimPeerConnection: edgeShim.shimPeerConnection,\n  shimGetUserMedia: __webpack_require__(483),\n  attachMediaStream: edgeShim.attachMediaStream,\n  reattachMediaStream: edgeShim.reattachMediaStream\n};\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"482.js","sources":["/home/ubuntu/workspace/node_modules/traceablepeerconnection/node_modules/webrtc-adapter/src/js/edge/edge_shim.js"],"sourcesContent":["/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = require('sdp');\nvar logging = require('../utils').log;\n\nvar edgeShim = {\n  shimPeerConnection: function() {\n    if (window.RTCIceGatherer) {\n      // ORTC defines an RTCIceCandidate object but no constructor.\n      // Not implemented in Edge.\n      if (!window.RTCIceCandidate) {\n        window.RTCIceCandidate = function(args) {\n          return args;\n        };\n      }\n      // ORTC does not have a session description object but\n      // other browsers (i.e. Chrome) that will support both PC and ORTC\n      // in the future might have this defined already.\n      if (!window.RTCSessionDescription) {\n        window.RTCSessionDescription = function(args) {\n          return args;\n        };\n      }\n    }\n\n    window.RTCPeerConnection = function(config) {\n      var self = this;\n\n      var _eventTarget = document.createDocumentFragment();\n      ['addEventListener', 'removeEventListener', 'dispatchEvent']\n          .forEach(function(method) {\n            self[method] = _eventTarget[method].bind(_eventTarget);\n          });\n\n      this.onicecandidate = null;\n      this.onaddstream = null;\n      this.ontrack = null;\n      this.onremovestream = null;\n      this.onsignalingstatechange = null;\n      this.oniceconnectionstatechange = null;\n      this.onnegotiationneeded = null;\n      this.ondatachannel = null;\n\n      this.localStreams = [];\n      this.remoteStreams = [];\n      this.getLocalStreams = function() {\n        return self.localStreams;\n      };\n      this.getRemoteStreams = function() {\n        return self.remoteStreams;\n      };\n\n      this.localDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.remoteDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.signalingState = 'stable';\n      this.iceConnectionState = 'new';\n      this.iceGatheringState = 'new';\n\n      this.iceOptions = {\n        gatherPolicy: 'all',\n        iceServers: []\n      };\n      if (config && config.iceTransportPolicy) {\n        switch (config.iceTransportPolicy) {\n          case 'all':\n          case 'relay':\n            this.iceOptions.gatherPolicy = config.iceTransportPolicy;\n            break;\n          case 'none':\n            // FIXME: remove once implementation and spec have added this.\n            throw new TypeError('iceTransportPolicy \"none\" not supported');\n          default:\n            // don't set iceTransportPolicy.\n            break;\n        }\n      }\n      this.usingBundle = config && config.bundlePolicy === 'max-bundle';\n\n      if (config && config.iceServers) {\n        // Edge does not like\n        // 1) stun:\n        // 2) turn: that does not have all of turn:host:port?transport=udp\n        var iceServers = JSON.parse(JSON.stringify(config.iceServers));\n        this.iceOptions.iceServers = iceServers.filter(function(server) {\n          if (server && server.urls) {\n            var urls = server.urls;\n            if (typeof urls === 'string') {\n              urls = [urls];\n            }\n            urls = urls.filter(function(url) {\n              return url.indexOf('turn:') === 0 &&\n                  url.indexOf('transport=udp') !== -1;\n            })[0];\n            return !!urls;\n          }\n          return false;\n        });\n      }\n\n      // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n      // everything that is needed to describe a SDP m-line.\n      this.transceivers = [];\n\n      // since the iceGatherer is currently created in createOffer but we\n      // must not emit candidates until after setLocalDescription we buffer\n      // them in this array.\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype._emitBufferedCandidates = function() {\n      var self = this;\n      var sections = SDPUtils.splitSections(self.localDescription.sdp);\n      // FIXME: need to apply ice candidates in a way which is async but\n      // in-order\n      this._localIceCandidatesBuffer.forEach(function(event) {\n        var end = !event.candidate || Object.keys(event.candidate).length === 0;\n        if (end) {\n          for (var j = 1; j < sections.length; j++) {\n            if (sections[j].indexOf('\\r\\na=end-of-candidates\\r\\n') === -1) {\n              sections[j] += 'a=end-of-candidates\\r\\n';\n            }\n          }\n        } else if (event.candidate.candidate.indexOf('typ endOfCandidates')\n            === -1) {\n          sections[event.candidate.sdpMLineIndex + 1] +=\n              'a=' + event.candidate.candidate + '\\r\\n';\n        }\n        self.localDescription.sdp = sections.join('');\n        self.dispatchEvent(event);\n        if (self.onicecandidate !== null) {\n          self.onicecandidate(event);\n        }\n        if (!event.candidate && self.iceGatheringState !== 'complete') {\n          var complete = self.transceivers.every(function(transceiver) {\n            return transceiver.iceGatherer &&\n                transceiver.iceGatherer.state === 'completed';\n          });\n          if (complete) {\n            self.iceGatheringState = 'complete';\n          }\n        }\n      });\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype.addStream = function(stream) {\n      // Clone is necessary for local demos mostly, attaching directly\n      // to two different senders does not work (build 10547).\n      this.localStreams.push(stream.clone());\n      this._maybeFireNegotiationNeeded();\n    };\n\n    window.RTCPeerConnection.prototype.removeStream = function(stream) {\n      var idx = this.localStreams.indexOf(stream);\n      if (idx > -1) {\n        this.localStreams.splice(idx, 1);\n        this._maybeFireNegotiationNeeded();\n      }\n    };\n\n    window.RTCPeerConnection.prototype.getSenders = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpSender;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpSender;\n      });\n    };\n\n    window.RTCPeerConnection.prototype.getReceivers = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpReceiver;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpReceiver;\n      });\n    };\n\n    // Determines the intersection of local and remote capabilities.\n    window.RTCPeerConnection.prototype._getCommonCapabilities =\n        function(localCapabilities, remoteCapabilities) {\n          var commonCapabilities = {\n            codecs: [],\n            headerExtensions: [],\n            fecMechanisms: []\n          };\n          localCapabilities.codecs.forEach(function(lCodec) {\n            for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n              var rCodec = remoteCapabilities.codecs[i];\n              if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n                  lCodec.clockRate === rCodec.clockRate &&\n                  lCodec.numChannels === rCodec.numChannels) {\n                // push rCodec so we reply with offerer payload type\n                commonCapabilities.codecs.push(rCodec);\n\n                // FIXME: also need to determine intersection between\n                // .rtcpFeedback and .parameters\n                break;\n              }\n            }\n          });\n\n          localCapabilities.headerExtensions\n              .forEach(function(lHeaderExtension) {\n                for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n                     i++) {\n                  var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n                  if (lHeaderExtension.uri === rHeaderExtension.uri) {\n                    commonCapabilities.headerExtensions.push(rHeaderExtension);\n                    break;\n                  }\n                }\n              });\n\n          // FIXME: fecMechanisms\n          return commonCapabilities;\n        };\n\n    // Create ICE gatherer, ICE transport and DTLS transport.\n    window.RTCPeerConnection.prototype._createIceAndDtlsTransports =\n        function(mid, sdpMLineIndex) {\n          var self = this;\n          var iceGatherer = new RTCIceGatherer(self.iceOptions);\n          var iceTransport = new RTCIceTransport(iceGatherer);\n          iceGatherer.onlocalcandidate = function(evt) {\n            var event = new Event('icecandidate');\n            event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n            var cand = evt.candidate;\n            var end = !cand || Object.keys(cand).length === 0;\n            // Edge emits an empty object for RTCIceCandidateComplete‥\n            if (end) {\n              // polyfill since RTCIceGatherer.state is not implemented in\n              // Edge 10547 yet.\n              if (iceGatherer.state === undefined) {\n                iceGatherer.state = 'completed';\n              }\n\n              // Emit a candidate with type endOfCandidates to make the samples\n              // work. Edge requires addIceCandidate with this empty candidate\n              // to start checking. The real solution is to signal\n              // end-of-candidates to the other side when getting the null\n              // candidate but some apps (like the samples) don't do that.\n              event.candidate.candidate =\n                  'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates';\n            } else {\n              // RTCIceCandidate doesn't have a component, needs to be added\n              cand.component = iceTransport.component === 'RTCP' ? 2 : 1;\n              event.candidate.candidate = SDPUtils.writeCandidate(cand);\n            }\n\n            // update local description.\n            var sections = SDPUtils.splitSections(self.localDescription.sdp);\n            if (event.candidate.candidate.indexOf('typ endOfCandidates')\n                === -1) {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=' + event.candidate.candidate + '\\r\\n';\n            } else {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=end-of-candidates\\r\\n';\n            }\n            self.localDescription.sdp = sections.join('');\n\n            var complete = self.transceivers.every(function(transceiver) {\n              return transceiver.iceGatherer &&\n                  transceiver.iceGatherer.state === 'completed';\n            });\n\n            // Emit candidate if localDescription is set.\n            // Also emits null candidate when all gatherers are complete.\n            switch (self.iceGatheringState) {\n              case 'new':\n                self._localIceCandidatesBuffer.push(event);\n                if (end && complete) {\n                  self._localIceCandidatesBuffer.push(\n                      new Event('icecandidate'));\n                }\n                break;\n              case 'gathering':\n                self._emitBufferedCandidates();\n                self.dispatchEvent(event);\n                if (self.onicecandidate !== null) {\n                  self.onicecandidate(event);\n                }\n                if (complete) {\n                  self.dispatchEvent(new Event('icecandidate'));\n                  if (self.onicecandidate !== null) {\n                    self.onicecandidate(new Event('icecandidate'));\n                  }\n                  self.iceGatheringState = 'complete';\n                }\n                break;\n              case 'complete':\n                // should not happen... currently!\n                break;\n              default: // no-op.\n                break;\n            }\n          };\n          iceTransport.onicestatechange = function() {\n            self._updateConnectionState();\n          };\n\n          var dtlsTransport = new RTCDtlsTransport(iceTransport);\n          dtlsTransport.ondtlsstatechange = function() {\n            self._updateConnectionState();\n          };\n          dtlsTransport.onerror = function() {\n            // onerror does not set state to failed by itself.\n            dtlsTransport.state = 'failed';\n            self._updateConnectionState();\n          };\n\n          return {\n            iceGatherer: iceGatherer,\n            iceTransport: iceTransport,\n            dtlsTransport: dtlsTransport\n          };\n        };\n\n    // Start the RTP Sender and Receiver for a transceiver.\n    window.RTCPeerConnection.prototype._transceive = function(transceiver,\n        send, recv) {\n      var params = this._getCommonCapabilities(transceiver.localCapabilities,\n          transceiver.remoteCapabilities);\n      if (send && transceiver.rtpSender) {\n        params.encodings = transceiver.sendEncodingParameters;\n        params.rtcp = {\n          cname: SDPUtils.localCName\n        };\n        if (transceiver.recvEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpSender.send(params);\n      }\n      if (recv && transceiver.rtpReceiver) {\n        params.encodings = transceiver.recvEncodingParameters;\n        params.rtcp = {\n          cname: transceiver.cname\n        };\n        if (transceiver.sendEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpReceiver.receive(params);\n      }\n    };\n\n    window.RTCPeerConnection.prototype.setLocalDescription =\n        function(description) {\n          var self = this;\n          var sections;\n          var sessionpart;\n          if (description.type === 'offer') {\n            // FIXME: What was the purpose of this empty if statement?\n            // if (!this._pendingOffer) {\n            // } else {\n            if (this._pendingOffer) {\n              // VERY limited support for SDP munging. Limited to:\n              // * changing the order of codecs\n              sections = SDPUtils.splitSections(description.sdp);\n              sessionpart = sections.shift();\n              sections.forEach(function(mediaSection, sdpMLineIndex) {\n                var caps = SDPUtils.parseRtpParameters(mediaSection);\n                self._pendingOffer[sdpMLineIndex].localCapabilities = caps;\n              });\n              this.transceivers = this._pendingOffer;\n              delete this._pendingOffer;\n            }\n          } else if (description.type === 'answer') {\n            sections = SDPUtils.splitSections(self.remoteDescription.sdp);\n            sessionpart = sections.shift();\n            var isIceLite = SDPUtils.matchPrefix(sessionpart,\n                'a=ice-lite').length > 0;\n            sections.forEach(function(mediaSection, sdpMLineIndex) {\n              var transceiver = self.transceivers[sdpMLineIndex];\n              var iceGatherer = transceiver.iceGatherer;\n              var iceTransport = transceiver.iceTransport;\n              var dtlsTransport = transceiver.dtlsTransport;\n              var localCapabilities = transceiver.localCapabilities;\n              var remoteCapabilities = transceiver.remoteCapabilities;\n              var rejected = mediaSection.split('\\n', 1)[0]\n                  .split(' ', 2)[1] === '0';\n\n              if (!rejected) {\n                var remoteIceParameters = SDPUtils.getIceParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                  .map(function(cand) {\n                    return SDPUtils.parseCandidate(cand);\n                  })\n                  .filter(function(cand) {\n                    return cand.component === '1';\n                  });\n                  // ice-lite only includes host candidates in the SDP so we can\n                  // use setRemoteCandidates (which implies an\n                  // RTCIceCandidateComplete)\n                  if (cands.length) {\n                    iceTransport.setRemoteCandidates(cands);\n                  }\n                }\n                var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  remoteDtlsParameters.role = 'server';\n                }\n\n                if (!self.usingBundle || sdpMLineIndex === 0) {\n                  iceTransport.start(iceGatherer, remoteIceParameters,\n                      isIceLite ? 'controlling' : 'controlled');\n                  dtlsTransport.start(remoteDtlsParameters);\n                }\n\n                // Calculate intersection of capabilities.\n                var params = self._getCommonCapabilities(localCapabilities,\n                    remoteCapabilities);\n\n                // Start the RTCRtpSender. The RTCRtpReceiver for this\n                // transceiver has already been started in setRemoteDescription.\n                self._transceive(transceiver,\n                    params.codecs.length > 0,\n                    false);\n              }\n            });\n          }\n\n          this.localDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-local-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n\n          // If a success callback was provided, emit ICE candidates after it\n          // has been executed. Otherwise, emit callback after the Promise is\n          // resolved.\n          var hasCallback = arguments.length > 1 &&\n            typeof arguments[1] === 'function';\n          if (hasCallback) {\n            var cb = arguments[1];\n            window.setTimeout(function() {\n              cb();\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              self._emitBufferedCandidates();\n            }, 0);\n          }\n          var p = Promise.resolve();\n          p.then(function() {\n            if (!hasCallback) {\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              // Usually candidates will be emitted earlier.\n              window.setTimeout(self._emitBufferedCandidates.bind(self), 500);\n            }\n          });\n          return p;\n        };\n\n    window.RTCPeerConnection.prototype.setRemoteDescription =\n        function(description) {\n          var self = this;\n          var stream = new MediaStream();\n          var receiverList = [];\n          var sections = SDPUtils.splitSections(description.sdp);\n          var sessionpart = sections.shift();\n          var isIceLite = SDPUtils.matchPrefix(sessionpart,\n              'a=ice-lite').length > 0;\n          this.usingBundle = SDPUtils.matchPrefix(sessionpart,\n              'a=group:BUNDLE ').length > 0;\n          sections.forEach(function(mediaSection, sdpMLineIndex) {\n            var lines = SDPUtils.splitLines(mediaSection);\n            var mline = lines[0].substr(2).split(' ');\n            var kind = mline[0];\n            var rejected = mline[1] === '0';\n            var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n\n            var transceiver;\n            var iceGatherer;\n            var iceTransport;\n            var dtlsTransport;\n            var rtpSender;\n            var rtpReceiver;\n            var sendEncodingParameters;\n            var recvEncodingParameters;\n            var localCapabilities;\n\n            var track;\n            // FIXME: ensure the mediaSection has rtcp-mux set.\n            var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n            var remoteIceParameters;\n            var remoteDtlsParameters;\n            if (!rejected) {\n              remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters.role = 'client';\n            }\n            recvEncodingParameters =\n                SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n            var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:');\n            if (mid.length) {\n              mid = mid[0].substr(6);\n            } else {\n              mid = SDPUtils.generateIdentifier();\n            }\n\n            var cname;\n            // Gets the first SSRC. Note that with RTX there might be multiple\n            // SSRCs.\n            var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n                .map(function(line) {\n                  return SDPUtils.parseSsrcMedia(line);\n                })\n                .filter(function(obj) {\n                  return obj.attribute === 'cname';\n                })[0];\n            if (remoteSsrc) {\n              cname = remoteSsrc.value;\n            }\n\n            var isComplete = SDPUtils.matchPrefix(mediaSection,\n                'a=end-of-candidates').length > 0;\n            var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                .map(function(cand) {\n                  return SDPUtils.parseCandidate(cand);\n                })\n                .filter(function(cand) {\n                  return cand.component === '1';\n                });\n            if (description.type === 'offer' && !rejected) {\n              var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n                iceGatherer: self.transceivers[0].iceGatherer,\n                iceTransport: self.transceivers[0].iceTransport,\n                dtlsTransport: self.transceivers[0].dtlsTransport\n              } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n              if (isComplete) {\n                transports.iceTransport.setRemoteCandidates(cands);\n              }\n\n              localCapabilities = RTCRtpReceiver.getCapabilities(kind);\n              sendEncodingParameters = [{\n                ssrc: (2 * sdpMLineIndex + 2) * 1001\n              }];\n\n              rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n\n              track = rtpReceiver.track;\n              receiverList.push([track, rtpReceiver]);\n              // FIXME: not correct when there are multiple streams but that is\n              // not currently supported in this shim.\n              stream.addTrack(track);\n\n              // FIXME: look at direction.\n              if (self.localStreams.length > 0 &&\n                  self.localStreams[0].getTracks().length >= sdpMLineIndex) {\n                // FIXME: actually more complicated, needs to match types etc\n                var localtrack = self.localStreams[0]\n                    .getTracks()[sdpMLineIndex];\n                rtpSender = new RTCRtpSender(localtrack,\n                    transports.dtlsTransport);\n              }\n\n              self.transceivers[sdpMLineIndex] = {\n                iceGatherer: transports.iceGatherer,\n                iceTransport: transports.iceTransport,\n                dtlsTransport: transports.dtlsTransport,\n                localCapabilities: localCapabilities,\n                remoteCapabilities: remoteCapabilities,\n                rtpSender: rtpSender,\n                rtpReceiver: rtpReceiver,\n                kind: kind,\n                mid: mid,\n                cname: cname,\n                sendEncodingParameters: sendEncodingParameters,\n                recvEncodingParameters: recvEncodingParameters\n              };\n              // Start the RTCRtpReceiver now. The RTPSender is started in\n              // setLocalDescription.\n              self._transceive(self.transceivers[sdpMLineIndex],\n                  false,\n                  direction === 'sendrecv' || direction === 'sendonly');\n            } else if (description.type === 'answer' && !rejected) {\n              transceiver = self.transceivers[sdpMLineIndex];\n              iceGatherer = transceiver.iceGatherer;\n              iceTransport = transceiver.iceTransport;\n              dtlsTransport = transceiver.dtlsTransport;\n              rtpSender = transceiver.rtpSender;\n              rtpReceiver = transceiver.rtpReceiver;\n              sendEncodingParameters = transceiver.sendEncodingParameters;\n              localCapabilities = transceiver.localCapabilities;\n\n              self.transceivers[sdpMLineIndex].recvEncodingParameters =\n                  recvEncodingParameters;\n              self.transceivers[sdpMLineIndex].remoteCapabilities =\n                  remoteCapabilities;\n              self.transceivers[sdpMLineIndex].cname = cname;\n\n              if ((isIceLite || isComplete) && cands.length) {\n                iceTransport.setRemoteCandidates(cands);\n              }\n              if (!self.usingBundle || sdpMLineIndex === 0) {\n                iceTransport.start(iceGatherer, remoteIceParameters,\n                    'controlling');\n                dtlsTransport.start(remoteDtlsParameters);\n              }\n\n              self._transceive(transceiver,\n                  direction === 'sendrecv' || direction === 'recvonly',\n                  direction === 'sendrecv' || direction === 'sendonly');\n\n              if (rtpReceiver &&\n                  (direction === 'sendrecv' || direction === 'sendonly')) {\n                track = rtpReceiver.track;\n                receiverList.push([track, rtpReceiver]);\n                stream.addTrack(track);\n              } else {\n                // FIXME: actually the receiver should be created later.\n                delete transceiver.rtpReceiver;\n              }\n            }\n          });\n\n          this.remoteDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-remote-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n          if (stream.getTracks().length) {\n            self.remoteStreams.push(stream);\n            window.setTimeout(function() {\n              var event = new Event('addstream');\n              event.stream = stream;\n              self.dispatchEvent(event);\n              if (self.onaddstream !== null) {\n                window.setTimeout(function() {\n                  self.onaddstream(event);\n                }, 0);\n              }\n\n              receiverList.forEach(function(item) {\n                var track = item[0];\n                var receiver = item[1];\n                var trackEvent = new Event('track');\n                trackEvent.track = track;\n                trackEvent.receiver = receiver;\n                trackEvent.streams = [stream];\n                self.dispatchEvent(event);\n                if (self.ontrack !== null) {\n                  window.setTimeout(function() {\n                    self.ontrack(trackEvent);\n                  }, 0);\n                }\n              });\n            }, 0);\n          }\n          if (arguments.length > 1 && typeof arguments[1] === 'function') {\n            window.setTimeout(arguments[1], 0);\n          }\n          return Promise.resolve();\n        };\n\n    window.RTCPeerConnection.prototype.close = function() {\n      this.transceivers.forEach(function(transceiver) {\n        /* not yet\n        if (transceiver.iceGatherer) {\n          transceiver.iceGatherer.close();\n        }\n        */\n        if (transceiver.iceTransport) {\n          transceiver.iceTransport.stop();\n        }\n        if (transceiver.dtlsTransport) {\n          transceiver.dtlsTransport.stop();\n        }\n        if (transceiver.rtpSender) {\n          transceiver.rtpSender.stop();\n        }\n        if (transceiver.rtpReceiver) {\n          transceiver.rtpReceiver.stop();\n        }\n      });\n      // FIXME: clean up tracks, local streams, remote streams, etc\n      this._updateSignalingState('closed');\n    };\n\n    // Update the signaling state.\n    window.RTCPeerConnection.prototype._updateSignalingState =\n        function(newState) {\n          this.signalingState = newState;\n          var event = new Event('signalingstatechange');\n          this.dispatchEvent(event);\n          if (this.onsignalingstatechange !== null) {\n            this.onsignalingstatechange(event);\n          }\n        };\n\n    // Determine whether to fire the negotiationneeded event.\n    window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded =\n        function() {\n          // Fire away (for now).\n          var event = new Event('negotiationneeded');\n          this.dispatchEvent(event);\n          if (this.onnegotiationneeded !== null) {\n            this.onnegotiationneeded(event);\n          }\n        };\n\n    // Update the connection state.\n    window.RTCPeerConnection.prototype._updateConnectionState = function() {\n      var self = this;\n      var newState;\n      var states = {\n        'new': 0,\n        closed: 0,\n        connecting: 0,\n        checking: 0,\n        connected: 0,\n        completed: 0,\n        failed: 0\n      };\n      this.transceivers.forEach(function(transceiver) {\n        states[transceiver.iceTransport.state]++;\n        states[transceiver.dtlsTransport.state]++;\n      });\n      // ICETransport.completed and connected are the same for this purpose.\n      states.connected += states.completed;\n\n      newState = 'new';\n      if (states.failed > 0) {\n        newState = 'failed';\n      } else if (states.connecting > 0 || states.checking > 0) {\n        newState = 'connecting';\n      } else if (states.disconnected > 0) {\n        newState = 'disconnected';\n      } else if (states.new > 0) {\n        newState = 'new';\n      } else if (states.connected > 0 || states.completed > 0) {\n        newState = 'connected';\n      }\n\n      if (newState !== self.iceConnectionState) {\n        self.iceConnectionState = newState;\n        var event = new Event('iceconnectionstatechange');\n        this.dispatchEvent(event);\n        if (this.oniceconnectionstatechange !== null) {\n          this.oniceconnectionstatechange(event);\n        }\n      }\n    };\n\n    window.RTCPeerConnection.prototype.createOffer = function() {\n      var self = this;\n      if (this._pendingOffer) {\n        throw new Error('createOffer called while there is a pending offer.');\n      }\n      var offerOptions;\n      if (arguments.length === 1 && typeof arguments[0] !== 'function') {\n        offerOptions = arguments[0];\n      } else if (arguments.length === 3) {\n        offerOptions = arguments[2];\n      }\n\n      var tracks = [];\n      var numAudioTracks = 0;\n      var numVideoTracks = 0;\n      // Default to sendrecv.\n      if (this.localStreams.length) {\n        numAudioTracks = this.localStreams[0].getAudioTracks().length;\n        numVideoTracks = this.localStreams[0].getVideoTracks().length;\n      }\n      // Determine number of audio and video tracks we need to send/recv.\n      if (offerOptions) {\n        // Reject Chrome legacy constraints.\n        if (offerOptions.mandatory || offerOptions.optional) {\n          throw new TypeError(\n              'Legacy mandatory/optional constraints not supported.');\n        }\n        if (offerOptions.offerToReceiveAudio !== undefined) {\n          numAudioTracks = offerOptions.offerToReceiveAudio;\n        }\n        if (offerOptions.offerToReceiveVideo !== undefined) {\n          numVideoTracks = offerOptions.offerToReceiveVideo;\n        }\n      }\n      if (this.localStreams.length) {\n        // Push local streams.\n        this.localStreams[0].getTracks().forEach(function(track) {\n          tracks.push({\n            kind: track.kind,\n            track: track,\n            wantReceive: track.kind === 'audio' ?\n                numAudioTracks > 0 : numVideoTracks > 0\n          });\n          if (track.kind === 'audio') {\n            numAudioTracks--;\n          } else if (track.kind === 'video') {\n            numVideoTracks--;\n          }\n        });\n      }\n      // Create M-lines for recvonly streams.\n      while (numAudioTracks > 0 || numVideoTracks > 0) {\n        if (numAudioTracks > 0) {\n          tracks.push({\n            kind: 'audio',\n            wantReceive: true\n          });\n          numAudioTracks--;\n        }\n        if (numVideoTracks > 0) {\n          tracks.push({\n            kind: 'video',\n            wantReceive: true\n          });\n          numVideoTracks--;\n        }\n      }\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      var transceivers = [];\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        // For each track, create an ice gatherer, ice transport,\n        // dtls transport, potentially rtpsender and rtpreceiver.\n        var track = mline.track;\n        var kind = mline.kind;\n        var mid = SDPUtils.generateIdentifier();\n\n        var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n          iceGatherer: transceivers[0].iceGatherer,\n          iceTransport: transceivers[0].iceTransport,\n          dtlsTransport: transceivers[0].dtlsTransport\n        } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n        var localCapabilities = RTCRtpSender.getCapabilities(kind);\n        var rtpSender;\n        var rtpReceiver;\n\n        // generate an ssrc now, to be used later in rtpSender.send\n        var sendEncodingParameters = [{\n          ssrc: (2 * sdpMLineIndex + 1) * 1001\n        }];\n        if (track) {\n          rtpSender = new RTCRtpSender(track, transports.dtlsTransport);\n        }\n\n        if (mline.wantReceive) {\n          rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n        }\n\n        transceivers[sdpMLineIndex] = {\n          iceGatherer: transports.iceGatherer,\n          iceTransport: transports.iceTransport,\n          dtlsTransport: transports.dtlsTransport,\n          localCapabilities: localCapabilities,\n          remoteCapabilities: null,\n          rtpSender: rtpSender,\n          rtpReceiver: rtpReceiver,\n          kind: kind,\n          mid: mid,\n          sendEncodingParameters: sendEncodingParameters,\n          recvEncodingParameters: null\n        };\n      });\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        var transceiver = transceivers[sdpMLineIndex];\n        sdp += SDPUtils.writeMediaSection(transceiver,\n            transceiver.localCapabilities, 'offer', self.localStreams[0]);\n      });\n\n      this._pendingOffer = transceivers;\n      var desc = new RTCSessionDescription({\n        type: 'offer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.createAnswer = function() {\n      var self = this;\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      this.transceivers.forEach(function(transceiver) {\n        // Calculate intersection of capabilities.\n        var commonCapabilities = self._getCommonCapabilities(\n            transceiver.localCapabilities,\n            transceiver.remoteCapabilities);\n\n        sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities,\n            'answer', self.localStreams[0]);\n      });\n\n      var desc = new RTCSessionDescription({\n        type: 'answer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n      if (candidate === null) {\n        this.transceivers.forEach(function(transceiver) {\n          transceiver.iceTransport.addRemoteCandidate({});\n        });\n      } else {\n        var mLineIndex = candidate.sdpMLineIndex;\n        if (candidate.sdpMid) {\n          for (var i = 0; i < this.transceivers.length; i++) {\n            if (this.transceivers[i].mid === candidate.sdpMid) {\n              mLineIndex = i;\n              break;\n            }\n          }\n        }\n        var transceiver = this.transceivers[mLineIndex];\n        if (transceiver) {\n          var cand = Object.keys(candidate.candidate).length > 0 ?\n              SDPUtils.parseCandidate(candidate.candidate) : {};\n          // Ignore Chrome's invalid candidates since Edge does not like them.\n          if (cand.protocol === 'tcp' && cand.port === 0) {\n            return;\n          }\n          // Ignore RTCP candidates, we assume RTCP-MUX.\n          if (cand.component !== '1') {\n            return;\n          }\n          // A dirty hack to make samples work.\n          if (cand.type === 'endOfCandidates') {\n            cand = {};\n          }\n          transceiver.iceTransport.addRemoteCandidate(cand);\n\n          // update the remoteDescription.\n          var sections = SDPUtils.splitSections(this.remoteDescription.sdp);\n          sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim()\n              : 'a=end-of-candidates') + '\\r\\n';\n          this.remoteDescription.sdp = sections.join('');\n        }\n      }\n      if (arguments.length > 1 && typeof arguments[1] === 'function') {\n        window.setTimeout(arguments[1], 0);\n      }\n      return Promise.resolve();\n    };\n\n    window.RTCPeerConnection.prototype.getStats = function() {\n      var promises = [];\n      this.transceivers.forEach(function(transceiver) {\n        ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n            'dtlsTransport'].forEach(function(method) {\n              if (transceiver[method]) {\n                promises.push(transceiver[method].getStats());\n              }\n            });\n      });\n      var cb = arguments.length > 1 && typeof arguments[1] === 'function' &&\n          arguments[1];\n      return new Promise(function(resolve) {\n        // shim getStats with maplike support\n        var results = new Map();\n        Promise.all(promises).then(function(res) {\n          res.forEach(function(result) {\n            Object.keys(result).forEach(function(id) {\n              results.set(id, result[id]);\n              results[id] = result[id];\n            });\n          });\n          if (cb) {\n            window.setTimeout(cb, 0, results);\n          }\n          resolve(results);\n        });\n      });\n    };\n  },\n\n  // Attach a media stream to an element.\n  attachMediaStream: function(element, stream) {\n    logging('DEPRECATED, attachMediaStream will soon be removed.');\n    element.srcObject = stream;\n  },\n\n  reattachMediaStream: function(to, from) {\n    logging('DEPRECATED, reattachMediaStream will soon be removed.');\n    to.srcObject = from.srcObject;\n  }\n};\n\n// Expose public methods.\nmodule.exports = {\n  shimPeerConnection: edgeShim.shimPeerConnection,\n  shimGetUserMedia: require('./getusermedia'),\n  attachMediaStream: edgeShim.attachMediaStream,\n  reattachMediaStream: edgeShim.reattachMediaStream\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/traceablepeerconnection/~/webrtc-adapter/src/js/edge/edge_shim.js\n// module id = 482\n// module chunks = 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Severity: Minor
Found in app/assets/javascripts/metamaps.secret.bundle.js by fixme

FIXME found
Open

    eval("/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = __webpack_require__(452);\nvar logging = __webpack_require__(479).log;\n\nvar edgeShim = {\n  shimPeerConnection: function() {\n    if (window.RTCIceGatherer) {\n      // ORTC defines an RTCIceCandidate object but no constructor.\n      // Not implemented in Edge.\n      if (!window.RTCIceCandidate) {\n        window.RTCIceCandidate = function(args) {\n          return args;\n        };\n      }\n      // ORTC does not have a session description object but\n      // other browsers (i.e. Chrome) that will support both PC and ORTC\n      // in the future might have this defined already.\n      if (!window.RTCSessionDescription) {\n        window.RTCSessionDescription = function(args) {\n          return args;\n        };\n      }\n    }\n\n    window.RTCPeerConnection = function(config) {\n      var self = this;\n\n      var _eventTarget = document.createDocumentFragment();\n      ['addEventListener', 'removeEventListener', 'dispatchEvent']\n          .forEach(function(method) {\n            self[method] = _eventTarget[method].bind(_eventTarget);\n          });\n\n      this.onicecandidate = null;\n      this.onaddstream = null;\n      this.ontrack = null;\n      this.onremovestream = null;\n      this.onsignalingstatechange = null;\n      this.oniceconnectionstatechange = null;\n      this.onnegotiationneeded = null;\n      this.ondatachannel = null;\n\n      this.localStreams = [];\n      this.remoteStreams = [];\n      this.getLocalStreams = function() {\n        return self.localStreams;\n      };\n      this.getRemoteStreams = function() {\n        return self.remoteStreams;\n      };\n\n      this.localDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.remoteDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.signalingState = 'stable';\n      this.iceConnectionState = 'new';\n      this.iceGatheringState = 'new';\n\n      this.iceOptions = {\n        gatherPolicy: 'all',\n        iceServers: []\n      };\n      if (config && config.iceTransportPolicy) {\n        switch (config.iceTransportPolicy) {\n          case 'all':\n          case 'relay':\n            this.iceOptions.gatherPolicy = config.iceTransportPolicy;\n            break;\n          case 'none':\n            // FIXME: remove once implementation and spec have added this.\n            throw new TypeError('iceTransportPolicy \"none\" not supported');\n          default:\n            // don't set iceTransportPolicy.\n            break;\n        }\n      }\n      this.usingBundle = config && config.bundlePolicy === 'max-bundle';\n\n      if (config && config.iceServers) {\n        // Edge does not like\n        // 1) stun:\n        // 2) turn: that does not have all of turn:host:port?transport=udp\n        var iceServers = JSON.parse(JSON.stringify(config.iceServers));\n        this.iceOptions.iceServers = iceServers.filter(function(server) {\n          if (server && server.urls) {\n            var urls = server.urls;\n            if (typeof urls === 'string') {\n              urls = [urls];\n            }\n            urls = urls.filter(function(url) {\n              return url.indexOf('turn:') === 0 &&\n                  url.indexOf('transport=udp') !== -1;\n            })[0];\n            return !!urls;\n          }\n          return false;\n        });\n      }\n\n      // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n      // everything that is needed to describe a SDP m-line.\n      this.transceivers = [];\n\n      // since the iceGatherer is currently created in createOffer but we\n      // must not emit candidates until after setLocalDescription we buffer\n      // them in this array.\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype._emitBufferedCandidates = function() {\n      var self = this;\n      var sections = SDPUtils.splitSections(self.localDescription.sdp);\n      // FIXME: need to apply ice candidates in a way which is async but\n      // in-order\n      this._localIceCandidatesBuffer.forEach(function(event) {\n        var end = !event.candidate || Object.keys(event.candidate).length === 0;\n        if (end) {\n          for (var j = 1; j < sections.length; j++) {\n            if (sections[j].indexOf('\\r\\na=end-of-candidates\\r\\n') === -1) {\n              sections[j] += 'a=end-of-candidates\\r\\n';\n            }\n          }\n        } else if (event.candidate.candidate.indexOf('typ endOfCandidates')\n            === -1) {\n          sections[event.candidate.sdpMLineIndex + 1] +=\n              'a=' + event.candidate.candidate + '\\r\\n';\n        }\n        self.localDescription.sdp = sections.join('');\n        self.dispatchEvent(event);\n        if (self.onicecandidate !== null) {\n          self.onicecandidate(event);\n        }\n        if (!event.candidate && self.iceGatheringState !== 'complete') {\n          var complete = self.transceivers.every(function(transceiver) {\n            return transceiver.iceGatherer &&\n                transceiver.iceGatherer.state === 'completed';\n          });\n          if (complete) {\n            self.iceGatheringState = 'complete';\n          }\n        }\n      });\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype.addStream = function(stream) {\n      // Clone is necessary for local demos mostly, attaching directly\n      // to two different senders does not work (build 10547).\n      this.localStreams.push(stream.clone());\n      this._maybeFireNegotiationNeeded();\n    };\n\n    window.RTCPeerConnection.prototype.removeStream = function(stream) {\n      var idx = this.localStreams.indexOf(stream);\n      if (idx > -1) {\n        this.localStreams.splice(idx, 1);\n        this._maybeFireNegotiationNeeded();\n      }\n    };\n\n    window.RTCPeerConnection.prototype.getSenders = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpSender;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpSender;\n      });\n    };\n\n    window.RTCPeerConnection.prototype.getReceivers = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpReceiver;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpReceiver;\n      });\n    };\n\n    // Determines the intersection of local and remote capabilities.\n    window.RTCPeerConnection.prototype._getCommonCapabilities =\n        function(localCapabilities, remoteCapabilities) {\n          var commonCapabilities = {\n            codecs: [],\n            headerExtensions: [],\n            fecMechanisms: []\n          };\n          localCapabilities.codecs.forEach(function(lCodec) {\n            for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n              var rCodec = remoteCapabilities.codecs[i];\n              if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n                  lCodec.clockRate === rCodec.clockRate &&\n                  lCodec.numChannels === rCodec.numChannels) {\n                // push rCodec so we reply with offerer payload type\n                commonCapabilities.codecs.push(rCodec);\n\n                // FIXME: also need to determine intersection between\n                // .rtcpFeedback and .parameters\n                break;\n              }\n            }\n          });\n\n          localCapabilities.headerExtensions\n              .forEach(function(lHeaderExtension) {\n                for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n                     i++) {\n                  var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n                  if (lHeaderExtension.uri === rHeaderExtension.uri) {\n                    commonCapabilities.headerExtensions.push(rHeaderExtension);\n                    break;\n                  }\n                }\n              });\n\n          // FIXME: fecMechanisms\n          return commonCapabilities;\n        };\n\n    // Create ICE gatherer, ICE transport and DTLS transport.\n    window.RTCPeerConnection.prototype._createIceAndDtlsTransports =\n        function(mid, sdpMLineIndex) {\n          var self = this;\n          var iceGatherer = new RTCIceGatherer(self.iceOptions);\n          var iceTransport = new RTCIceTransport(iceGatherer);\n          iceGatherer.onlocalcandidate = function(evt) {\n            var event = new Event('icecandidate');\n            event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n            var cand = evt.candidate;\n            var end = !cand || Object.keys(cand).length === 0;\n            // Edge emits an empty object for RTCIceCandidateComplete‥\n            if (end) {\n              // polyfill since RTCIceGatherer.state is not implemented in\n              // Edge 10547 yet.\n              if (iceGatherer.state === undefined) {\n                iceGatherer.state = 'completed';\n              }\n\n              // Emit a candidate with type endOfCandidates to make the samples\n              // work. Edge requires addIceCandidate with this empty candidate\n              // to start checking. The real solution is to signal\n              // end-of-candidates to the other side when getting the null\n              // candidate but some apps (like the samples) don't do that.\n              event.candidate.candidate =\n                  'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates';\n            } else {\n              // RTCIceCandidate doesn't have a component, needs to be added\n              cand.component = iceTransport.component === 'RTCP' ? 2 : 1;\n              event.candidate.candidate = SDPUtils.writeCandidate(cand);\n            }\n\n            // update local description.\n            var sections = SDPUtils.splitSections(self.localDescription.sdp);\n            if (event.candidate.candidate.indexOf('typ endOfCandidates')\n                === -1) {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=' + event.candidate.candidate + '\\r\\n';\n            } else {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=end-of-candidates\\r\\n';\n            }\n            self.localDescription.sdp = sections.join('');\n\n            var complete = self.transceivers.every(function(transceiver) {\n              return transceiver.iceGatherer &&\n                  transceiver.iceGatherer.state === 'completed';\n            });\n\n            // Emit candidate if localDescription is set.\n            // Also emits null candidate when all gatherers are complete.\n            switch (self.iceGatheringState) {\n              case 'new':\n                self._localIceCandidatesBuffer.push(event);\n                if (end && complete) {\n                  self._localIceCandidatesBuffer.push(\n                      new Event('icecandidate'));\n                }\n                break;\n              case 'gathering':\n                self._emitBufferedCandidates();\n                self.dispatchEvent(event);\n                if (self.onicecandidate !== null) {\n                  self.onicecandidate(event);\n                }\n                if (complete) {\n                  self.dispatchEvent(new Event('icecandidate'));\n                  if (self.onicecandidate !== null) {\n                    self.onicecandidate(new Event('icecandidate'));\n                  }\n                  self.iceGatheringState = 'complete';\n                }\n                break;\n              case 'complete':\n                // should not happen... currently!\n                break;\n              default: // no-op.\n                break;\n            }\n          };\n          iceTransport.onicestatechange = function() {\n            self._updateConnectionState();\n          };\n\n          var dtlsTransport = new RTCDtlsTransport(iceTransport);\n          dtlsTransport.ondtlsstatechange = function() {\n            self._updateConnectionState();\n          };\n          dtlsTransport.onerror = function() {\n            // onerror does not set state to failed by itself.\n            dtlsTransport.state = 'failed';\n            self._updateConnectionState();\n          };\n\n          return {\n            iceGatherer: iceGatherer,\n            iceTransport: iceTransport,\n            dtlsTransport: dtlsTransport\n          };\n        };\n\n    // Start the RTP Sender and Receiver for a transceiver.\n    window.RTCPeerConnection.prototype._transceive = function(transceiver,\n        send, recv) {\n      var params = this._getCommonCapabilities(transceiver.localCapabilities,\n          transceiver.remoteCapabilities);\n      if (send && transceiver.rtpSender) {\n        params.encodings = transceiver.sendEncodingParameters;\n        params.rtcp = {\n          cname: SDPUtils.localCName\n        };\n        if (transceiver.recvEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpSender.send(params);\n      }\n      if (recv && transceiver.rtpReceiver) {\n        params.encodings = transceiver.recvEncodingParameters;\n        params.rtcp = {\n          cname: transceiver.cname\n        };\n        if (transceiver.sendEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpReceiver.receive(params);\n      }\n    };\n\n    window.RTCPeerConnection.prototype.setLocalDescription =\n        function(description) {\n          var self = this;\n          var sections;\n          var sessionpart;\n          if (description.type === 'offer') {\n            // FIXME: What was the purpose of this empty if statement?\n            // if (!this._pendingOffer) {\n            // } else {\n            if (this._pendingOffer) {\n              // VERY limited support for SDP munging. Limited to:\n              // * changing the order of codecs\n              sections = SDPUtils.splitSections(description.sdp);\n              sessionpart = sections.shift();\n              sections.forEach(function(mediaSection, sdpMLineIndex) {\n                var caps = SDPUtils.parseRtpParameters(mediaSection);\n                self._pendingOffer[sdpMLineIndex].localCapabilities = caps;\n              });\n              this.transceivers = this._pendingOffer;\n              delete this._pendingOffer;\n            }\n          } else if (description.type === 'answer') {\n            sections = SDPUtils.splitSections(self.remoteDescription.sdp);\n            sessionpart = sections.shift();\n            var isIceLite = SDPUtils.matchPrefix(sessionpart,\n                'a=ice-lite').length > 0;\n            sections.forEach(function(mediaSection, sdpMLineIndex) {\n              var transceiver = self.transceivers[sdpMLineIndex];\n              var iceGatherer = transceiver.iceGatherer;\n              var iceTransport = transceiver.iceTransport;\n              var dtlsTransport = transceiver.dtlsTransport;\n              var localCapabilities = transceiver.localCapabilities;\n              var remoteCapabilities = transceiver.remoteCapabilities;\n              var rejected = mediaSection.split('\\n', 1)[0]\n                  .split(' ', 2)[1] === '0';\n\n              if (!rejected) {\n                var remoteIceParameters = SDPUtils.getIceParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                  .map(function(cand) {\n                    return SDPUtils.parseCandidate(cand);\n                  })\n                  .filter(function(cand) {\n                    return cand.component === '1';\n                  });\n                  // ice-lite only includes host candidates in the SDP so we can\n                  // use setRemoteCandidates (which implies an\n                  // RTCIceCandidateComplete)\n                  if (cands.length) {\n                    iceTransport.setRemoteCandidates(cands);\n                  }\n                }\n                var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  remoteDtlsParameters.role = 'server';\n                }\n\n                if (!self.usingBundle || sdpMLineIndex === 0) {\n                  iceTransport.start(iceGatherer, remoteIceParameters,\n                      isIceLite ? 'controlling' : 'controlled');\n                  dtlsTransport.start(remoteDtlsParameters);\n                }\n\n                // Calculate intersection of capabilities.\n                var params = self._getCommonCapabilities(localCapabilities,\n                    remoteCapabilities);\n\n                // Start the RTCRtpSender. The RTCRtpReceiver for this\n                // transceiver has already been started in setRemoteDescription.\n                self._transceive(transceiver,\n                    params.codecs.length > 0,\n                    false);\n              }\n            });\n          }\n\n          this.localDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-local-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n\n          // If a success callback was provided, emit ICE candidates after it\n          // has been executed. Otherwise, emit callback after the Promise is\n          // resolved.\n          var hasCallback = arguments.length > 1 &&\n            typeof arguments[1] === 'function';\n          if (hasCallback) {\n            var cb = arguments[1];\n            window.setTimeout(function() {\n              cb();\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              self._emitBufferedCandidates();\n            }, 0);\n          }\n          var p = Promise.resolve();\n          p.then(function() {\n            if (!hasCallback) {\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              // Usually candidates will be emitted earlier.\n              window.setTimeout(self._emitBufferedCandidates.bind(self), 500);\n            }\n          });\n          return p;\n        };\n\n    window.RTCPeerConnection.prototype.setRemoteDescription =\n        function(description) {\n          var self = this;\n          var stream = new MediaStream();\n          var receiverList = [];\n          var sections = SDPUtils.splitSections(description.sdp);\n          var sessionpart = sections.shift();\n          var isIceLite = SDPUtils.matchPrefix(sessionpart,\n              'a=ice-lite').length > 0;\n          this.usingBundle = SDPUtils.matchPrefix(sessionpart,\n              'a=group:BUNDLE ').length > 0;\n          sections.forEach(function(mediaSection, sdpMLineIndex) {\n            var lines = SDPUtils.splitLines(mediaSection);\n            var mline = lines[0].substr(2).split(' ');\n            var kind = mline[0];\n            var rejected = mline[1] === '0';\n            var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n\n            var transceiver;\n            var iceGatherer;\n            var iceTransport;\n            var dtlsTransport;\n            var rtpSender;\n            var rtpReceiver;\n            var sendEncodingParameters;\n            var recvEncodingParameters;\n            var localCapabilities;\n\n            var track;\n            // FIXME: ensure the mediaSection has rtcp-mux set.\n            var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n            var remoteIceParameters;\n            var remoteDtlsParameters;\n            if (!rejected) {\n              remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters.role = 'client';\n            }\n            recvEncodingParameters =\n                SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n            var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:');\n            if (mid.length) {\n              mid = mid[0].substr(6);\n            } else {\n              mid = SDPUtils.generateIdentifier();\n            }\n\n            var cname;\n            // Gets the first SSRC. Note that with RTX there might be multiple\n            // SSRCs.\n            var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n                .map(function(line) {\n                  return SDPUtils.parseSsrcMedia(line);\n                })\n                .filter(function(obj) {\n                  return obj.attribute === 'cname';\n                })[0];\n            if (remoteSsrc) {\n              cname = remoteSsrc.value;\n            }\n\n            var isComplete = SDPUtils.matchPrefix(mediaSection,\n                'a=end-of-candidates').length > 0;\n            var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                .map(function(cand) {\n                  return SDPUtils.parseCandidate(cand);\n                })\n                .filter(function(cand) {\n                  return cand.component === '1';\n                });\n            if (description.type === 'offer' && !rejected) {\n              var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n                iceGatherer: self.transceivers[0].iceGatherer,\n                iceTransport: self.transceivers[0].iceTransport,\n                dtlsTransport: self.transceivers[0].dtlsTransport\n              } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n              if (isComplete) {\n                transports.iceTransport.setRemoteCandidates(cands);\n              }\n\n              localCapabilities = RTCRtpReceiver.getCapabilities(kind);\n              sendEncodingParameters = [{\n                ssrc: (2 * sdpMLineIndex + 2) * 1001\n              }];\n\n              rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n\n              track = rtpReceiver.track;\n              receiverList.push([track, rtpReceiver]);\n              // FIXME: not correct when there are multiple streams but that is\n              // not currently supported in this shim.\n              stream.addTrack(track);\n\n              // FIXME: look at direction.\n              if (self.localStreams.length > 0 &&\n                  self.localStreams[0].getTracks().length >= sdpMLineIndex) {\n                // FIXME: actually more complicated, needs to match types etc\n                var localtrack = self.localStreams[0]\n                    .getTracks()[sdpMLineIndex];\n                rtpSender = new RTCRtpSender(localtrack,\n                    transports.dtlsTransport);\n              }\n\n              self.transceivers[sdpMLineIndex] = {\n                iceGatherer: transports.iceGatherer,\n                iceTransport: transports.iceTransport,\n                dtlsTransport: transports.dtlsTransport,\n                localCapabilities: localCapabilities,\n                remoteCapabilities: remoteCapabilities,\n                rtpSender: rtpSender,\n                rtpReceiver: rtpReceiver,\n                kind: kind,\n                mid: mid,\n                cname: cname,\n                sendEncodingParameters: sendEncodingParameters,\n                recvEncodingParameters: recvEncodingParameters\n              };\n              // Start the RTCRtpReceiver now. The RTPSender is started in\n              // setLocalDescription.\n              self._transceive(self.transceivers[sdpMLineIndex],\n                  false,\n                  direction === 'sendrecv' || direction === 'sendonly');\n            } else if (description.type === 'answer' && !rejected) {\n              transceiver = self.transceivers[sdpMLineIndex];\n              iceGatherer = transceiver.iceGatherer;\n              iceTransport = transceiver.iceTransport;\n              dtlsTransport = transceiver.dtlsTransport;\n              rtpSender = transceiver.rtpSender;\n              rtpReceiver = transceiver.rtpReceiver;\n              sendEncodingParameters = transceiver.sendEncodingParameters;\n              localCapabilities = transceiver.localCapabilities;\n\n              self.transceivers[sdpMLineIndex].recvEncodingParameters =\n                  recvEncodingParameters;\n              self.transceivers[sdpMLineIndex].remoteCapabilities =\n                  remoteCapabilities;\n              self.transceivers[sdpMLineIndex].cname = cname;\n\n              if ((isIceLite || isComplete) && cands.length) {\n                iceTransport.setRemoteCandidates(cands);\n              }\n              if (!self.usingBundle || sdpMLineIndex === 0) {\n                iceTransport.start(iceGatherer, remoteIceParameters,\n                    'controlling');\n                dtlsTransport.start(remoteDtlsParameters);\n              }\n\n              self._transceive(transceiver,\n                  direction === 'sendrecv' || direction === 'recvonly',\n                  direction === 'sendrecv' || direction === 'sendonly');\n\n              if (rtpReceiver &&\n                  (direction === 'sendrecv' || direction === 'sendonly')) {\n                track = rtpReceiver.track;\n                receiverList.push([track, rtpReceiver]);\n                stream.addTrack(track);\n              } else {\n                // FIXME: actually the receiver should be created later.\n                delete transceiver.rtpReceiver;\n              }\n            }\n          });\n\n          this.remoteDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-remote-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n          if (stream.getTracks().length) {\n            self.remoteStreams.push(stream);\n            window.setTimeout(function() {\n              var event = new Event('addstream');\n              event.stream = stream;\n              self.dispatchEvent(event);\n              if (self.onaddstream !== null) {\n                window.setTimeout(function() {\n                  self.onaddstream(event);\n                }, 0);\n              }\n\n              receiverList.forEach(function(item) {\n                var track = item[0];\n                var receiver = item[1];\n                var trackEvent = new Event('track');\n                trackEvent.track = track;\n                trackEvent.receiver = receiver;\n                trackEvent.streams = [stream];\n                self.dispatchEvent(event);\n                if (self.ontrack !== null) {\n                  window.setTimeout(function() {\n                    self.ontrack(trackEvent);\n                  }, 0);\n                }\n              });\n            }, 0);\n          }\n          if (arguments.length > 1 && typeof arguments[1] === 'function') {\n            window.setTimeout(arguments[1], 0);\n          }\n          return Promise.resolve();\n        };\n\n    window.RTCPeerConnection.prototype.close = function() {\n      this.transceivers.forEach(function(transceiver) {\n        /* not yet\n        if (transceiver.iceGatherer) {\n          transceiver.iceGatherer.close();\n        }\n        */\n        if (transceiver.iceTransport) {\n          transceiver.iceTransport.stop();\n        }\n        if (transceiver.dtlsTransport) {\n          transceiver.dtlsTransport.stop();\n        }\n        if (transceiver.rtpSender) {\n          transceiver.rtpSender.stop();\n        }\n        if (transceiver.rtpReceiver) {\n          transceiver.rtpReceiver.stop();\n        }\n      });\n      // FIXME: clean up tracks, local streams, remote streams, etc\n      this._updateSignalingState('closed');\n    };\n\n    // Update the signaling state.\n    window.RTCPeerConnection.prototype._updateSignalingState =\n        function(newState) {\n          this.signalingState = newState;\n          var event = new Event('signalingstatechange');\n          this.dispatchEvent(event);\n          if (this.onsignalingstatechange !== null) {\n            this.onsignalingstatechange(event);\n          }\n        };\n\n    // Determine whether to fire the negotiationneeded event.\n    window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded =\n        function() {\n          // Fire away (for now).\n          var event = new Event('negotiationneeded');\n          this.dispatchEvent(event);\n          if (this.onnegotiationneeded !== null) {\n            this.onnegotiationneeded(event);\n          }\n        };\n\n    // Update the connection state.\n    window.RTCPeerConnection.prototype._updateConnectionState = function() {\n      var self = this;\n      var newState;\n      var states = {\n        'new': 0,\n        closed: 0,\n        connecting: 0,\n        checking: 0,\n        connected: 0,\n        completed: 0,\n        failed: 0\n      };\n      this.transceivers.forEach(function(transceiver) {\n        states[transceiver.iceTransport.state]++;\n        states[transceiver.dtlsTransport.state]++;\n      });\n      // ICETransport.completed and connected are the same for this purpose.\n      states.connected += states.completed;\n\n      newState = 'new';\n      if (states.failed > 0) {\n        newState = 'failed';\n      } else if (states.connecting > 0 || states.checking > 0) {\n        newState = 'connecting';\n      } else if (states.disconnected > 0) {\n        newState = 'disconnected';\n      } else if (states.new > 0) {\n        newState = 'new';\n      } else if (states.connected > 0 || states.completed > 0) {\n        newState = 'connected';\n      }\n\n      if (newState !== self.iceConnectionState) {\n        self.iceConnectionState = newState;\n        var event = new Event('iceconnectionstatechange');\n        this.dispatchEvent(event);\n        if (this.oniceconnectionstatechange !== null) {\n          this.oniceconnectionstatechange(event);\n        }\n      }\n    };\n\n    window.RTCPeerConnection.prototype.createOffer = function() {\n      var self = this;\n      if (this._pendingOffer) {\n        throw new Error('createOffer called while there is a pending offer.');\n      }\n      var offerOptions;\n      if (arguments.length === 1 && typeof arguments[0] !== 'function') {\n        offerOptions = arguments[0];\n      } else if (arguments.length === 3) {\n        offerOptions = arguments[2];\n      }\n\n      var tracks = [];\n      var numAudioTracks = 0;\n      var numVideoTracks = 0;\n      // Default to sendrecv.\n      if (this.localStreams.length) {\n        numAudioTracks = this.localStreams[0].getAudioTracks().length;\n        numVideoTracks = this.localStreams[0].getVideoTracks().length;\n      }\n      // Determine number of audio and video tracks we need to send/recv.\n      if (offerOptions) {\n        // Reject Chrome legacy constraints.\n        if (offerOptions.mandatory || offerOptions.optional) {\n          throw new TypeError(\n              'Legacy mandatory/optional constraints not supported.');\n        }\n        if (offerOptions.offerToReceiveAudio !== undefined) {\n          numAudioTracks = offerOptions.offerToReceiveAudio;\n        }\n        if (offerOptions.offerToReceiveVideo !== undefined) {\n          numVideoTracks = offerOptions.offerToReceiveVideo;\n        }\n      }\n      if (this.localStreams.length) {\n        // Push local streams.\n        this.localStreams[0].getTracks().forEach(function(track) {\n          tracks.push({\n            kind: track.kind,\n            track: track,\n            wantReceive: track.kind === 'audio' ?\n                numAudioTracks > 0 : numVideoTracks > 0\n          });\n          if (track.kind === 'audio') {\n            numAudioTracks--;\n          } else if (track.kind === 'video') {\n            numVideoTracks--;\n          }\n        });\n      }\n      // Create M-lines for recvonly streams.\n      while (numAudioTracks > 0 || numVideoTracks > 0) {\n        if (numAudioTracks > 0) {\n          tracks.push({\n            kind: 'audio',\n            wantReceive: true\n          });\n          numAudioTracks--;\n        }\n        if (numVideoTracks > 0) {\n          tracks.push({\n            kind: 'video',\n            wantReceive: true\n          });\n          numVideoTracks--;\n        }\n      }\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      var transceivers = [];\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        // For each track, create an ice gatherer, ice transport,\n        // dtls transport, potentially rtpsender and rtpreceiver.\n        var track = mline.track;\n        var kind = mline.kind;\n        var mid = SDPUtils.generateIdentifier();\n\n        var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n          iceGatherer: transceivers[0].iceGatherer,\n          iceTransport: transceivers[0].iceTransport,\n          dtlsTransport: transceivers[0].dtlsTransport\n        } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n        var localCapabilities = RTCRtpSender.getCapabilities(kind);\n        var rtpSender;\n        var rtpReceiver;\n\n        // generate an ssrc now, to be used later in rtpSender.send\n        var sendEncodingParameters = [{\n          ssrc: (2 * sdpMLineIndex + 1) * 1001\n        }];\n        if (track) {\n          rtpSender = new RTCRtpSender(track, transports.dtlsTransport);\n        }\n\n        if (mline.wantReceive) {\n          rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n        }\n\n        transceivers[sdpMLineIndex] = {\n          iceGatherer: transports.iceGatherer,\n          iceTransport: transports.iceTransport,\n          dtlsTransport: transports.dtlsTransport,\n          localCapabilities: localCapabilities,\n          remoteCapabilities: null,\n          rtpSender: rtpSender,\n          rtpReceiver: rtpReceiver,\n          kind: kind,\n          mid: mid,\n          sendEncodingParameters: sendEncodingParameters,\n          recvEncodingParameters: null\n        };\n      });\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        var transceiver = transceivers[sdpMLineIndex];\n        sdp += SDPUtils.writeMediaSection(transceiver,\n            transceiver.localCapabilities, 'offer', self.localStreams[0]);\n      });\n\n      this._pendingOffer = transceivers;\n      var desc = new RTCSessionDescription({\n        type: 'offer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.createAnswer = function() {\n      var self = this;\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      this.transceivers.forEach(function(transceiver) {\n        // Calculate intersection of capabilities.\n        var commonCapabilities = self._getCommonCapabilities(\n            transceiver.localCapabilities,\n            transceiver.remoteCapabilities);\n\n        sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities,\n            'answer', self.localStreams[0]);\n      });\n\n      var desc = new RTCSessionDescription({\n        type: 'answer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n      if (candidate === null) {\n        this.transceivers.forEach(function(transceiver) {\n          transceiver.iceTransport.addRemoteCandidate({});\n        });\n      } else {\n        var mLineIndex = candidate.sdpMLineIndex;\n        if (candidate.sdpMid) {\n          for (var i = 0; i < this.transceivers.length; i++) {\n            if (this.transceivers[i].mid === candidate.sdpMid) {\n              mLineIndex = i;\n              break;\n            }\n          }\n        }\n        var transceiver = this.transceivers[mLineIndex];\n        if (transceiver) {\n          var cand = Object.keys(candidate.candidate).length > 0 ?\n              SDPUtils.parseCandidate(candidate.candidate) : {};\n          // Ignore Chrome's invalid candidates since Edge does not like them.\n          if (cand.protocol === 'tcp' && cand.port === 0) {\n            return;\n          }\n          // Ignore RTCP candidates, we assume RTCP-MUX.\n          if (cand.component !== '1') {\n            return;\n          }\n          // A dirty hack to make samples work.\n          if (cand.type === 'endOfCandidates') {\n            cand = {};\n          }\n          transceiver.iceTransport.addRemoteCandidate(cand);\n\n          // update the remoteDescription.\n          var sections = SDPUtils.splitSections(this.remoteDescription.sdp);\n          sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim()\n              : 'a=end-of-candidates') + '\\r\\n';\n          this.remoteDescription.sdp = sections.join('');\n        }\n      }\n      if (arguments.length > 1 && typeof arguments[1] === 'function') {\n        window.setTimeout(arguments[1], 0);\n      }\n      return Promise.resolve();\n    };\n\n    window.RTCPeerConnection.prototype.getStats = function() {\n      var promises = [];\n      this.transceivers.forEach(function(transceiver) {\n        ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n            'dtlsTransport'].forEach(function(method) {\n              if (transceiver[method]) {\n                promises.push(transceiver[method].getStats());\n              }\n            });\n      });\n      var cb = arguments.length > 1 && typeof arguments[1] === 'function' &&\n          arguments[1];\n      return new Promise(function(resolve) {\n        // shim getStats with maplike support\n        var results = new Map();\n        Promise.all(promises).then(function(res) {\n          res.forEach(function(result) {\n            Object.keys(result).forEach(function(id) {\n              results.set(id, result[id]);\n              results[id] = result[id];\n            });\n          });\n          if (cb) {\n            window.setTimeout(cb, 0, results);\n          }\n          resolve(results);\n        });\n      });\n    };\n  },\n\n  // Attach a media stream to an element.\n  attachMediaStream: function(element, stream) {\n    logging('DEPRECATED, attachMediaStream will soon be removed.');\n    element.srcObject = stream;\n  },\n\n  reattachMediaStream: function(to, from) {\n    logging('DEPRECATED, reattachMediaStream will soon be removed.');\n    to.srcObject = from.srcObject;\n  }\n};\n\n// Expose public methods.\nmodule.exports = {\n  shimPeerConnection: edgeShim.shimPeerConnection,\n  shimGetUserMedia: __webpack_require__(483),\n  attachMediaStream: edgeShim.attachMediaStream,\n  reattachMediaStream: edgeShim.reattachMediaStream\n};\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"482.js","sources":["/home/ubuntu/workspace/node_modules/traceablepeerconnection/node_modules/webrtc-adapter/src/js/edge/edge_shim.js"],"sourcesContent":["/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = require('sdp');\nvar logging = require('../utils').log;\n\nvar edgeShim = {\n  shimPeerConnection: function() {\n    if (window.RTCIceGatherer) {\n      // ORTC defines an RTCIceCandidate object but no constructor.\n      // Not implemented in Edge.\n      if (!window.RTCIceCandidate) {\n        window.RTCIceCandidate = function(args) {\n          return args;\n        };\n      }\n      // ORTC does not have a session description object but\n      // other browsers (i.e. Chrome) that will support both PC and ORTC\n      // in the future might have this defined already.\n      if (!window.RTCSessionDescription) {\n        window.RTCSessionDescription = function(args) {\n          return args;\n        };\n      }\n    }\n\n    window.RTCPeerConnection = function(config) {\n      var self = this;\n\n      var _eventTarget = document.createDocumentFragment();\n      ['addEventListener', 'removeEventListener', 'dispatchEvent']\n          .forEach(function(method) {\n            self[method] = _eventTarget[method].bind(_eventTarget);\n          });\n\n      this.onicecandidate = null;\n      this.onaddstream = null;\n      this.ontrack = null;\n      this.onremovestream = null;\n      this.onsignalingstatechange = null;\n      this.oniceconnectionstatechange = null;\n      this.onnegotiationneeded = null;\n      this.ondatachannel = null;\n\n      this.localStreams = [];\n      this.remoteStreams = [];\n      this.getLocalStreams = function() {\n        return self.localStreams;\n      };\n      this.getRemoteStreams = function() {\n        return self.remoteStreams;\n      };\n\n      this.localDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.remoteDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.signalingState = 'stable';\n      this.iceConnectionState = 'new';\n      this.iceGatheringState = 'new';\n\n      this.iceOptions = {\n        gatherPolicy: 'all',\n        iceServers: []\n      };\n      if (config && config.iceTransportPolicy) {\n        switch (config.iceTransportPolicy) {\n          case 'all':\n          case 'relay':\n            this.iceOptions.gatherPolicy = config.iceTransportPolicy;\n            break;\n          case 'none':\n            // FIXME: remove once implementation and spec have added this.\n            throw new TypeError('iceTransportPolicy \"none\" not supported');\n          default:\n            // don't set iceTransportPolicy.\n            break;\n        }\n      }\n      this.usingBundle = config && config.bundlePolicy === 'max-bundle';\n\n      if (config && config.iceServers) {\n        // Edge does not like\n        // 1) stun:\n        // 2) turn: that does not have all of turn:host:port?transport=udp\n        var iceServers = JSON.parse(JSON.stringify(config.iceServers));\n        this.iceOptions.iceServers = iceServers.filter(function(server) {\n          if (server && server.urls) {\n            var urls = server.urls;\n            if (typeof urls === 'string') {\n              urls = [urls];\n            }\n            urls = urls.filter(function(url) {\n              return url.indexOf('turn:') === 0 &&\n                  url.indexOf('transport=udp') !== -1;\n            })[0];\n            return !!urls;\n          }\n          return false;\n        });\n      }\n\n      // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n      // everything that is needed to describe a SDP m-line.\n      this.transceivers = [];\n\n      // since the iceGatherer is currently created in createOffer but we\n      // must not emit candidates until after setLocalDescription we buffer\n      // them in this array.\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype._emitBufferedCandidates = function() {\n      var self = this;\n      var sections = SDPUtils.splitSections(self.localDescription.sdp);\n      // FIXME: need to apply ice candidates in a way which is async but\n      // in-order\n      this._localIceCandidatesBuffer.forEach(function(event) {\n        var end = !event.candidate || Object.keys(event.candidate).length === 0;\n        if (end) {\n          for (var j = 1; j < sections.length; j++) {\n            if (sections[j].indexOf('\\r\\na=end-of-candidates\\r\\n') === -1) {\n              sections[j] += 'a=end-of-candidates\\r\\n';\n            }\n          }\n        } else if (event.candidate.candidate.indexOf('typ endOfCandidates')\n            === -1) {\n          sections[event.candidate.sdpMLineIndex + 1] +=\n              'a=' + event.candidate.candidate + '\\r\\n';\n        }\n        self.localDescription.sdp = sections.join('');\n        self.dispatchEvent(event);\n        if (self.onicecandidate !== null) {\n          self.onicecandidate(event);\n        }\n        if (!event.candidate && self.iceGatheringState !== 'complete') {\n          var complete = self.transceivers.every(function(transceiver) {\n            return transceiver.iceGatherer &&\n                transceiver.iceGatherer.state === 'completed';\n          });\n          if (complete) {\n            self.iceGatheringState = 'complete';\n          }\n        }\n      });\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype.addStream = function(stream) {\n      // Clone is necessary for local demos mostly, attaching directly\n      // to two different senders does not work (build 10547).\n      this.localStreams.push(stream.clone());\n      this._maybeFireNegotiationNeeded();\n    };\n\n    window.RTCPeerConnection.prototype.removeStream = function(stream) {\n      var idx = this.localStreams.indexOf(stream);\n      if (idx > -1) {\n        this.localStreams.splice(idx, 1);\n        this._maybeFireNegotiationNeeded();\n      }\n    };\n\n    window.RTCPeerConnection.prototype.getSenders = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpSender;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpSender;\n      });\n    };\n\n    window.RTCPeerConnection.prototype.getReceivers = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpReceiver;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpReceiver;\n      });\n    };\n\n    // Determines the intersection of local and remote capabilities.\n    window.RTCPeerConnection.prototype._getCommonCapabilities =\n        function(localCapabilities, remoteCapabilities) {\n          var commonCapabilities = {\n            codecs: [],\n            headerExtensions: [],\n            fecMechanisms: []\n          };\n          localCapabilities.codecs.forEach(function(lCodec) {\n            for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n              var rCodec = remoteCapabilities.codecs[i];\n              if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n                  lCodec.clockRate === rCodec.clockRate &&\n                  lCodec.numChannels === rCodec.numChannels) {\n                // push rCodec so we reply with offerer payload type\n                commonCapabilities.codecs.push(rCodec);\n\n                // FIXME: also need to determine intersection between\n                // .rtcpFeedback and .parameters\n                break;\n              }\n            }\n          });\n\n          localCapabilities.headerExtensions\n              .forEach(function(lHeaderExtension) {\n                for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n                     i++) {\n                  var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n                  if (lHeaderExtension.uri === rHeaderExtension.uri) {\n                    commonCapabilities.headerExtensions.push(rHeaderExtension);\n                    break;\n                  }\n                }\n              });\n\n          // FIXME: fecMechanisms\n          return commonCapabilities;\n        };\n\n    // Create ICE gatherer, ICE transport and DTLS transport.\n    window.RTCPeerConnection.prototype._createIceAndDtlsTransports =\n        function(mid, sdpMLineIndex) {\n          var self = this;\n          var iceGatherer = new RTCIceGatherer(self.iceOptions);\n          var iceTransport = new RTCIceTransport(iceGatherer);\n          iceGatherer.onlocalcandidate = function(evt) {\n            var event = new Event('icecandidate');\n            event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n            var cand = evt.candidate;\n            var end = !cand || Object.keys(cand).length === 0;\n            // Edge emits an empty object for RTCIceCandidateComplete‥\n            if (end) {\n              // polyfill since RTCIceGatherer.state is not implemented in\n              // Edge 10547 yet.\n              if (iceGatherer.state === undefined) {\n                iceGatherer.state = 'completed';\n              }\n\n              // Emit a candidate with type endOfCandidates to make the samples\n              // work. Edge requires addIceCandidate with this empty candidate\n              // to start checking. The real solution is to signal\n              // end-of-candidates to the other side when getting the null\n              // candidate but some apps (like the samples) don't do that.\n              event.candidate.candidate =\n                  'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates';\n            } else {\n              // RTCIceCandidate doesn't have a component, needs to be added\n              cand.component = iceTransport.component === 'RTCP' ? 2 : 1;\n              event.candidate.candidate = SDPUtils.writeCandidate(cand);\n            }\n\n            // update local description.\n            var sections = SDPUtils.splitSections(self.localDescription.sdp);\n            if (event.candidate.candidate.indexOf('typ endOfCandidates')\n                === -1) {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=' + event.candidate.candidate + '\\r\\n';\n            } else {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=end-of-candidates\\r\\n';\n            }\n            self.localDescription.sdp = sections.join('');\n\n            var complete = self.transceivers.every(function(transceiver) {\n              return transceiver.iceGatherer &&\n                  transceiver.iceGatherer.state === 'completed';\n            });\n\n            // Emit candidate if localDescription is set.\n            // Also emits null candidate when all gatherers are complete.\n            switch (self.iceGatheringState) {\n              case 'new':\n                self._localIceCandidatesBuffer.push(event);\n                if (end && complete) {\n                  self._localIceCandidatesBuffer.push(\n                      new Event('icecandidate'));\n                }\n                break;\n              case 'gathering':\n                self._emitBufferedCandidates();\n                self.dispatchEvent(event);\n                if (self.onicecandidate !== null) {\n                  self.onicecandidate(event);\n                }\n                if (complete) {\n                  self.dispatchEvent(new Event('icecandidate'));\n                  if (self.onicecandidate !== null) {\n                    self.onicecandidate(new Event('icecandidate'));\n                  }\n                  self.iceGatheringState = 'complete';\n                }\n                break;\n              case 'complete':\n                // should not happen... currently!\n                break;\n              default: // no-op.\n                break;\n            }\n          };\n          iceTransport.onicestatechange = function() {\n            self._updateConnectionState();\n          };\n\n          var dtlsTransport = new RTCDtlsTransport(iceTransport);\n          dtlsTransport.ondtlsstatechange = function() {\n            self._updateConnectionState();\n          };\n          dtlsTransport.onerror = function() {\n            // onerror does not set state to failed by itself.\n            dtlsTransport.state = 'failed';\n            self._updateConnectionState();\n          };\n\n          return {\n            iceGatherer: iceGatherer,\n            iceTransport: iceTransport,\n            dtlsTransport: dtlsTransport\n          };\n        };\n\n    // Start the RTP Sender and Receiver for a transceiver.\n    window.RTCPeerConnection.prototype._transceive = function(transceiver,\n        send, recv) {\n      var params = this._getCommonCapabilities(transceiver.localCapabilities,\n          transceiver.remoteCapabilities);\n      if (send && transceiver.rtpSender) {\n        params.encodings = transceiver.sendEncodingParameters;\n        params.rtcp = {\n          cname: SDPUtils.localCName\n        };\n        if (transceiver.recvEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpSender.send(params);\n      }\n      if (recv && transceiver.rtpReceiver) {\n        params.encodings = transceiver.recvEncodingParameters;\n        params.rtcp = {\n          cname: transceiver.cname\n        };\n        if (transceiver.sendEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpReceiver.receive(params);\n      }\n    };\n\n    window.RTCPeerConnection.prototype.setLocalDescription =\n        function(description) {\n          var self = this;\n          var sections;\n          var sessionpart;\n          if (description.type === 'offer') {\n            // FIXME: What was the purpose of this empty if statement?\n            // if (!this._pendingOffer) {\n            // } else {\n            if (this._pendingOffer) {\n              // VERY limited support for SDP munging. Limited to:\n              // * changing the order of codecs\n              sections = SDPUtils.splitSections(description.sdp);\n              sessionpart = sections.shift();\n              sections.forEach(function(mediaSection, sdpMLineIndex) {\n                var caps = SDPUtils.parseRtpParameters(mediaSection);\n                self._pendingOffer[sdpMLineIndex].localCapabilities = caps;\n              });\n              this.transceivers = this._pendingOffer;\n              delete this._pendingOffer;\n            }\n          } else if (description.type === 'answer') {\n            sections = SDPUtils.splitSections(self.remoteDescription.sdp);\n            sessionpart = sections.shift();\n            var isIceLite = SDPUtils.matchPrefix(sessionpart,\n                'a=ice-lite').length > 0;\n            sections.forEach(function(mediaSection, sdpMLineIndex) {\n              var transceiver = self.transceivers[sdpMLineIndex];\n              var iceGatherer = transceiver.iceGatherer;\n              var iceTransport = transceiver.iceTransport;\n              var dtlsTransport = transceiver.dtlsTransport;\n              var localCapabilities = transceiver.localCapabilities;\n              var remoteCapabilities = transceiver.remoteCapabilities;\n              var rejected = mediaSection.split('\\n', 1)[0]\n                  .split(' ', 2)[1] === '0';\n\n              if (!rejected) {\n                var remoteIceParameters = SDPUtils.getIceParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                  .map(function(cand) {\n                    return SDPUtils.parseCandidate(cand);\n                  })\n                  .filter(function(cand) {\n                    return cand.component === '1';\n                  });\n                  // ice-lite only includes host candidates in the SDP so we can\n                  // use setRemoteCandidates (which implies an\n                  // RTCIceCandidateComplete)\n                  if (cands.length) {\n                    iceTransport.setRemoteCandidates(cands);\n                  }\n                }\n                var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  remoteDtlsParameters.role = 'server';\n                }\n\n                if (!self.usingBundle || sdpMLineIndex === 0) {\n                  iceTransport.start(iceGatherer, remoteIceParameters,\n                      isIceLite ? 'controlling' : 'controlled');\n                  dtlsTransport.start(remoteDtlsParameters);\n                }\n\n                // Calculate intersection of capabilities.\n                var params = self._getCommonCapabilities(localCapabilities,\n                    remoteCapabilities);\n\n                // Start the RTCRtpSender. The RTCRtpReceiver for this\n                // transceiver has already been started in setRemoteDescription.\n                self._transceive(transceiver,\n                    params.codecs.length > 0,\n                    false);\n              }\n            });\n          }\n\n          this.localDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-local-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n\n          // If a success callback was provided, emit ICE candidates after it\n          // has been executed. Otherwise, emit callback after the Promise is\n          // resolved.\n          var hasCallback = arguments.length > 1 &&\n            typeof arguments[1] === 'function';\n          if (hasCallback) {\n            var cb = arguments[1];\n            window.setTimeout(function() {\n              cb();\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              self._emitBufferedCandidates();\n            }, 0);\n          }\n          var p = Promise.resolve();\n          p.then(function() {\n            if (!hasCallback) {\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              // Usually candidates will be emitted earlier.\n              window.setTimeout(self._emitBufferedCandidates.bind(self), 500);\n            }\n          });\n          return p;\n        };\n\n    window.RTCPeerConnection.prototype.setRemoteDescription =\n        function(description) {\n          var self = this;\n          var stream = new MediaStream();\n          var receiverList = [];\n          var sections = SDPUtils.splitSections(description.sdp);\n          var sessionpart = sections.shift();\n          var isIceLite = SDPUtils.matchPrefix(sessionpart,\n              'a=ice-lite').length > 0;\n          this.usingBundle = SDPUtils.matchPrefix(sessionpart,\n              'a=group:BUNDLE ').length > 0;\n          sections.forEach(function(mediaSection, sdpMLineIndex) {\n            var lines = SDPUtils.splitLines(mediaSection);\n            var mline = lines[0].substr(2).split(' ');\n            var kind = mline[0];\n            var rejected = mline[1] === '0';\n            var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n\n            var transceiver;\n            var iceGatherer;\n            var iceTransport;\n            var dtlsTransport;\n            var rtpSender;\n            var rtpReceiver;\n            var sendEncodingParameters;\n            var recvEncodingParameters;\n            var localCapabilities;\n\n            var track;\n            // FIXME: ensure the mediaSection has rtcp-mux set.\n            var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n            var remoteIceParameters;\n            var remoteDtlsParameters;\n            if (!rejected) {\n              remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters.role = 'client';\n            }\n            recvEncodingParameters =\n                SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n            var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:');\n            if (mid.length) {\n              mid = mid[0].substr(6);\n            } else {\n              mid = SDPUtils.generateIdentifier();\n            }\n\n            var cname;\n            // Gets the first SSRC. Note that with RTX there might be multiple\n            // SSRCs.\n            var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n                .map(function(line) {\n                  return SDPUtils.parseSsrcMedia(line);\n                })\n                .filter(function(obj) {\n                  return obj.attribute === 'cname';\n                })[0];\n            if (remoteSsrc) {\n              cname = remoteSsrc.value;\n            }\n\n            var isComplete = SDPUtils.matchPrefix(mediaSection,\n                'a=end-of-candidates').length > 0;\n            var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                .map(function(cand) {\n                  return SDPUtils.parseCandidate(cand);\n                })\n                .filter(function(cand) {\n                  return cand.component === '1';\n                });\n            if (description.type === 'offer' && !rejected) {\n              var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n                iceGatherer: self.transceivers[0].iceGatherer,\n                iceTransport: self.transceivers[0].iceTransport,\n                dtlsTransport: self.transceivers[0].dtlsTransport\n              } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n              if (isComplete) {\n                transports.iceTransport.setRemoteCandidates(cands);\n              }\n\n              localCapabilities = RTCRtpReceiver.getCapabilities(kind);\n              sendEncodingParameters = [{\n                ssrc: (2 * sdpMLineIndex + 2) * 1001\n              }];\n\n              rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n\n              track = rtpReceiver.track;\n              receiverList.push([track, rtpReceiver]);\n              // FIXME: not correct when there are multiple streams but that is\n              // not currently supported in this shim.\n              stream.addTrack(track);\n\n              // FIXME: look at direction.\n              if (self.localStreams.length > 0 &&\n                  self.localStreams[0].getTracks().length >= sdpMLineIndex) {\n                // FIXME: actually more complicated, needs to match types etc\n                var localtrack = self.localStreams[0]\n                    .getTracks()[sdpMLineIndex];\n                rtpSender = new RTCRtpSender(localtrack,\n                    transports.dtlsTransport);\n              }\n\n              self.transceivers[sdpMLineIndex] = {\n                iceGatherer: transports.iceGatherer,\n                iceTransport: transports.iceTransport,\n                dtlsTransport: transports.dtlsTransport,\n                localCapabilities: localCapabilities,\n                remoteCapabilities: remoteCapabilities,\n                rtpSender: rtpSender,\n                rtpReceiver: rtpReceiver,\n                kind: kind,\n                mid: mid,\n                cname: cname,\n                sendEncodingParameters: sendEncodingParameters,\n                recvEncodingParameters: recvEncodingParameters\n              };\n              // Start the RTCRtpReceiver now. The RTPSender is started in\n              // setLocalDescription.\n              self._transceive(self.transceivers[sdpMLineIndex],\n                  false,\n                  direction === 'sendrecv' || direction === 'sendonly');\n            } else if (description.type === 'answer' && !rejected) {\n              transceiver = self.transceivers[sdpMLineIndex];\n              iceGatherer = transceiver.iceGatherer;\n              iceTransport = transceiver.iceTransport;\n              dtlsTransport = transceiver.dtlsTransport;\n              rtpSender = transceiver.rtpSender;\n              rtpReceiver = transceiver.rtpReceiver;\n              sendEncodingParameters = transceiver.sendEncodingParameters;\n              localCapabilities = transceiver.localCapabilities;\n\n              self.transceivers[sdpMLineIndex].recvEncodingParameters =\n                  recvEncodingParameters;\n              self.transceivers[sdpMLineIndex].remoteCapabilities =\n                  remoteCapabilities;\n              self.transceivers[sdpMLineIndex].cname = cname;\n\n              if ((isIceLite || isComplete) && cands.length) {\n                iceTransport.setRemoteCandidates(cands);\n              }\n              if (!self.usingBundle || sdpMLineIndex === 0) {\n                iceTransport.start(iceGatherer, remoteIceParameters,\n                    'controlling');\n                dtlsTransport.start(remoteDtlsParameters);\n              }\n\n              self._transceive(transceiver,\n                  direction === 'sendrecv' || direction === 'recvonly',\n                  direction === 'sendrecv' || direction === 'sendonly');\n\n              if (rtpReceiver &&\n                  (direction === 'sendrecv' || direction === 'sendonly')) {\n                track = rtpReceiver.track;\n                receiverList.push([track, rtpReceiver]);\n                stream.addTrack(track);\n              } else {\n                // FIXME: actually the receiver should be created later.\n                delete transceiver.rtpReceiver;\n              }\n            }\n          });\n\n          this.remoteDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-remote-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n          if (stream.getTracks().length) {\n            self.remoteStreams.push(stream);\n            window.setTimeout(function() {\n              var event = new Event('addstream');\n              event.stream = stream;\n              self.dispatchEvent(event);\n              if (self.onaddstream !== null) {\n                window.setTimeout(function() {\n                  self.onaddstream(event);\n                }, 0);\n              }\n\n              receiverList.forEach(function(item) {\n                var track = item[0];\n                var receiver = item[1];\n                var trackEvent = new Event('track');\n                trackEvent.track = track;\n                trackEvent.receiver = receiver;\n                trackEvent.streams = [stream];\n                self.dispatchEvent(event);\n                if (self.ontrack !== null) {\n                  window.setTimeout(function() {\n                    self.ontrack(trackEvent);\n                  }, 0);\n                }\n              });\n            }, 0);\n          }\n          if (arguments.length > 1 && typeof arguments[1] === 'function') {\n            window.setTimeout(arguments[1], 0);\n          }\n          return Promise.resolve();\n        };\n\n    window.RTCPeerConnection.prototype.close = function() {\n      this.transceivers.forEach(function(transceiver) {\n        /* not yet\n        if (transceiver.iceGatherer) {\n          transceiver.iceGatherer.close();\n        }\n        */\n        if (transceiver.iceTransport) {\n          transceiver.iceTransport.stop();\n        }\n        if (transceiver.dtlsTransport) {\n          transceiver.dtlsTransport.stop();\n        }\n        if (transceiver.rtpSender) {\n          transceiver.rtpSender.stop();\n        }\n        if (transceiver.rtpReceiver) {\n          transceiver.rtpReceiver.stop();\n        }\n      });\n      // FIXME: clean up tracks, local streams, remote streams, etc\n      this._updateSignalingState('closed');\n    };\n\n    // Update the signaling state.\n    window.RTCPeerConnection.prototype._updateSignalingState =\n        function(newState) {\n          this.signalingState = newState;\n          var event = new Event('signalingstatechange');\n          this.dispatchEvent(event);\n          if (this.onsignalingstatechange !== null) {\n            this.onsignalingstatechange(event);\n          }\n        };\n\n    // Determine whether to fire the negotiationneeded event.\n    window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded =\n        function() {\n          // Fire away (for now).\n          var event = new Event('negotiationneeded');\n          this.dispatchEvent(event);\n          if (this.onnegotiationneeded !== null) {\n            this.onnegotiationneeded(event);\n          }\n        };\n\n    // Update the connection state.\n    window.RTCPeerConnection.prototype._updateConnectionState = function() {\n      var self = this;\n      var newState;\n      var states = {\n        'new': 0,\n        closed: 0,\n        connecting: 0,\n        checking: 0,\n        connected: 0,\n        completed: 0,\n        failed: 0\n      };\n      this.transceivers.forEach(function(transceiver) {\n        states[transceiver.iceTransport.state]++;\n        states[transceiver.dtlsTransport.state]++;\n      });\n      // ICETransport.completed and connected are the same for this purpose.\n      states.connected += states.completed;\n\n      newState = 'new';\n      if (states.failed > 0) {\n        newState = 'failed';\n      } else if (states.connecting > 0 || states.checking > 0) {\n        newState = 'connecting';\n      } else if (states.disconnected > 0) {\n        newState = 'disconnected';\n      } else if (states.new > 0) {\n        newState = 'new';\n      } else if (states.connected > 0 || states.completed > 0) {\n        newState = 'connected';\n      }\n\n      if (newState !== self.iceConnectionState) {\n        self.iceConnectionState = newState;\n        var event = new Event('iceconnectionstatechange');\n        this.dispatchEvent(event);\n        if (this.oniceconnectionstatechange !== null) {\n          this.oniceconnectionstatechange(event);\n        }\n      }\n    };\n\n    window.RTCPeerConnection.prototype.createOffer = function() {\n      var self = this;\n      if (this._pendingOffer) {\n        throw new Error('createOffer called while there is a pending offer.');\n      }\n      var offerOptions;\n      if (arguments.length === 1 && typeof arguments[0] !== 'function') {\n        offerOptions = arguments[0];\n      } else if (arguments.length === 3) {\n        offerOptions = arguments[2];\n      }\n\n      var tracks = [];\n      var numAudioTracks = 0;\n      var numVideoTracks = 0;\n      // Default to sendrecv.\n      if (this.localStreams.length) {\n        numAudioTracks = this.localStreams[0].getAudioTracks().length;\n        numVideoTracks = this.localStreams[0].getVideoTracks().length;\n      }\n      // Determine number of audio and video tracks we need to send/recv.\n      if (offerOptions) {\n        // Reject Chrome legacy constraints.\n        if (offerOptions.mandatory || offerOptions.optional) {\n          throw new TypeError(\n              'Legacy mandatory/optional constraints not supported.');\n        }\n        if (offerOptions.offerToReceiveAudio !== undefined) {\n          numAudioTracks = offerOptions.offerToReceiveAudio;\n        }\n        if (offerOptions.offerToReceiveVideo !== undefined) {\n          numVideoTracks = offerOptions.offerToReceiveVideo;\n        }\n      }\n      if (this.localStreams.length) {\n        // Push local streams.\n        this.localStreams[0].getTracks().forEach(function(track) {\n          tracks.push({\n            kind: track.kind,\n            track: track,\n            wantReceive: track.kind === 'audio' ?\n                numAudioTracks > 0 : numVideoTracks > 0\n          });\n          if (track.kind === 'audio') {\n            numAudioTracks--;\n          } else if (track.kind === 'video') {\n            numVideoTracks--;\n          }\n        });\n      }\n      // Create M-lines for recvonly streams.\n      while (numAudioTracks > 0 || numVideoTracks > 0) {\n        if (numAudioTracks > 0) {\n          tracks.push({\n            kind: 'audio',\n            wantReceive: true\n          });\n          numAudioTracks--;\n        }\n        if (numVideoTracks > 0) {\n          tracks.push({\n            kind: 'video',\n            wantReceive: true\n          });\n          numVideoTracks--;\n        }\n      }\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      var transceivers = [];\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        // For each track, create an ice gatherer, ice transport,\n        // dtls transport, potentially rtpsender and rtpreceiver.\n        var track = mline.track;\n        var kind = mline.kind;\n        var mid = SDPUtils.generateIdentifier();\n\n        var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n          iceGatherer: transceivers[0].iceGatherer,\n          iceTransport: transceivers[0].iceTransport,\n          dtlsTransport: transceivers[0].dtlsTransport\n        } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n        var localCapabilities = RTCRtpSender.getCapabilities(kind);\n        var rtpSender;\n        var rtpReceiver;\n\n        // generate an ssrc now, to be used later in rtpSender.send\n        var sendEncodingParameters = [{\n          ssrc: (2 * sdpMLineIndex + 1) * 1001\n        }];\n        if (track) {\n          rtpSender = new RTCRtpSender(track, transports.dtlsTransport);\n        }\n\n        if (mline.wantReceive) {\n          rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n        }\n\n        transceivers[sdpMLineIndex] = {\n          iceGatherer: transports.iceGatherer,\n          iceTransport: transports.iceTransport,\n          dtlsTransport: transports.dtlsTransport,\n          localCapabilities: localCapabilities,\n          remoteCapabilities: null,\n          rtpSender: rtpSender,\n          rtpReceiver: rtpReceiver,\n          kind: kind,\n          mid: mid,\n          sendEncodingParameters: sendEncodingParameters,\n          recvEncodingParameters: null\n        };\n      });\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        var transceiver = transceivers[sdpMLineIndex];\n        sdp += SDPUtils.writeMediaSection(transceiver,\n            transceiver.localCapabilities, 'offer', self.localStreams[0]);\n      });\n\n      this._pendingOffer = transceivers;\n      var desc = new RTCSessionDescription({\n        type: 'offer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.createAnswer = function() {\n      var self = this;\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      this.transceivers.forEach(function(transceiver) {\n        // Calculate intersection of capabilities.\n        var commonCapabilities = self._getCommonCapabilities(\n            transceiver.localCapabilities,\n            transceiver.remoteCapabilities);\n\n        sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities,\n            'answer', self.localStreams[0]);\n      });\n\n      var desc = new RTCSessionDescription({\n        type: 'answer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n      if (candidate === null) {\n        this.transceivers.forEach(function(transceiver) {\n          transceiver.iceTransport.addRemoteCandidate({});\n        });\n      } else {\n        var mLineIndex = candidate.sdpMLineIndex;\n        if (candidate.sdpMid) {\n          for (var i = 0; i < this.transceivers.length; i++) {\n            if (this.transceivers[i].mid === candidate.sdpMid) {\n              mLineIndex = i;\n              break;\n            }\n          }\n        }\n        var transceiver = this.transceivers[mLineIndex];\n        if (transceiver) {\n          var cand = Object.keys(candidate.candidate).length > 0 ?\n              SDPUtils.parseCandidate(candidate.candidate) : {};\n          // Ignore Chrome's invalid candidates since Edge does not like them.\n          if (cand.protocol === 'tcp' && cand.port === 0) {\n            return;\n          }\n          // Ignore RTCP candidates, we assume RTCP-MUX.\n          if (cand.component !== '1') {\n            return;\n          }\n          // A dirty hack to make samples work.\n          if (cand.type === 'endOfCandidates') {\n            cand = {};\n          }\n          transceiver.iceTransport.addRemoteCandidate(cand);\n\n          // update the remoteDescription.\n          var sections = SDPUtils.splitSections(this.remoteDescription.sdp);\n          sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim()\n              : 'a=end-of-candidates') + '\\r\\n';\n          this.remoteDescription.sdp = sections.join('');\n        }\n      }\n      if (arguments.length > 1 && typeof arguments[1] === 'function') {\n        window.setTimeout(arguments[1], 0);\n      }\n      return Promise.resolve();\n    };\n\n    window.RTCPeerConnection.prototype.getStats = function() {\n      var promises = [];\n      this.transceivers.forEach(function(transceiver) {\n        ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n            'dtlsTransport'].forEach(function(method) {\n              if (transceiver[method]) {\n                promises.push(transceiver[method].getStats());\n              }\n            });\n      });\n      var cb = arguments.length > 1 && typeof arguments[1] === 'function' &&\n          arguments[1];\n      return new Promise(function(resolve) {\n        // shim getStats with maplike support\n        var results = new Map();\n        Promise.all(promises).then(function(res) {\n          res.forEach(function(result) {\n            Object.keys(result).forEach(function(id) {\n              results.set(id, result[id]);\n              results[id] = result[id];\n            });\n          });\n          if (cb) {\n            window.setTimeout(cb, 0, results);\n          }\n          resolve(results);\n        });\n      });\n    };\n  },\n\n  // Attach a media stream to an element.\n  attachMediaStream: function(element, stream) {\n    logging('DEPRECATED, attachMediaStream will soon be removed.');\n    element.srcObject = stream;\n  },\n\n  reattachMediaStream: function(to, from) {\n    logging('DEPRECATED, reattachMediaStream will soon be removed.');\n    to.srcObject = from.srcObject;\n  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Severity: Minor
Found in app/assets/javascripts/metamaps.secret.bundle.js by fixme

TODO found
Open

      // TODO fix tests so we don't need _.get
Severity: Minor
Found in frontend/src/Metamaps/JIT.js by fixme

TODO found
Open

    eval("'use strict';Object.defineProperty(exports,\"__esModule\",{value:true});var _typeof=typeof Symbol===\"function\"&&typeof Symbol.iterator===\"symbol\"?function(obj){return typeof obj;}:function(obj){return obj&&typeof Symbol===\"function\"&&obj.constructor===Symbol?\"symbol\":typeof obj;};/*\nCopyright (c) 2011 Sencha Inc. - Author: Nicolas Garcia Belmonte (http://philogb.github.com/)\n\nPermission is hereby granted, free of charge, to any person obtaining a copy\nof this software and associated documentation files (the \"Software\"), to deal\nin the Software without restriction, including without limitation the rights\nto use, copy, modify, merge, publish, distribute, sublicense, and/or sell\ncopies of the Software, and to permit persons to whom the Software is\nfurnished to do so, subject to the following conditions:\n\nThe above copyright notice and this permission notice shall be included in\nall copies or substantial portions of the Software.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\nIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\nFITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\nAUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\nLIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\nOUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\nTHE SOFTWARE.\n\n */\n\n/*\n  File: Core.js\n\n */\n\n/*\n Object: $jit\n \n Defines the namespace for all library Classes and Objects. \n This variable is the *only* global variable defined in the Toolkit. \n There are also other interesting properties attached to this variable described below.\n */\n// START METAMAPS CODE\nvar $jit=function $jit(w){\n// ORIGINAL:\n// window.$jit = function(w) {\n// END METAMAPS CODE\nw=w||window;\nfor(var k in $jit){\nif($jit[k].$extend){\nw[k]=$jit[k];\n}\n}\n};\n\n$jit.version='2.0.1';\n/*\n  Object: $jit.id\n  \n  Works just like *document.getElementById*\n  \n  Example:\n  (start code js)\n  var element = $jit.id('elementId');\n  (end code)\n\n*/\n\n/*\n Object: $jit.util\n \n Contains utility functions.\n \n Some of the utility functions and the Class system were based in the MooTools Framework \n <http://mootools.net>. Copyright (c) 2006-2010 Valerio Proietti, <http://mad4milk.net/>. \n MIT license <http://mootools.net/license.txt>.\n \n These methods are generally also implemented in DOM manipulation frameworks like JQuery, MooTools and Prototype.\n I'd suggest you to use the functions from those libraries instead of using these, since their functions \n are widely used and tested in many different platforms/browsers. Use these functions only if you have to.\n \n */\nvar $=function $(d){\nreturn document.getElementById(d);\n};\n\n$.empty=function(){\n};\n\n/*\n  Method: extend\n  \n  Augment an object by appending another object's properties.\n  \n  Parameters:\n  \n  original - (object) The object to be extended.\n  extended - (object) An object which properties are going to be appended to the original object.\n  \n  Example:\n  (start code js)\n  $jit.util.extend({ 'a': 1, 'b': 2 }, { 'b': 3, 'c': 4 }); //{ 'a':1, 'b': 3, 'c': 4 }\n  (end code)\n*/\n$.extend=function(original,extended){\nfor(var key in extended||{}){\noriginal[key]=extended[key];}\nreturn original;\n};\n\n$.lambda=function(value){\nreturn typeof value=='function'?value:function(){\nreturn value;\n};\n};\n\n$.time=Date.now||function(){\nreturn+new Date();\n};\n\n/*\n  Method: splat\n  \n  Returns an array wrapping *obj* if *obj* is not an array. Returns *obj* otherwise.\n  \n  Parameters:\n  \n  obj - (mixed) The object to be wrapped in an array.\n  \n  Example:\n  (start code js)\n  $jit.util.splat(3);   //[3]\n  $jit.util.splat([3]); //[3]\n  (end code)\n*/\n$.splat=function(obj){\nvar type=$.type(obj);\nreturn type?type!='array'?[obj]:obj:[];\n};\n\n$.type=function(elem){\nvar type=$.type.s.call(elem).match(/^\\[object\\s(.*)\\]$/)[1].toLowerCase();\nif(type!='object')return type;\nif(elem&&elem.$$family)return elem.$$family;\nreturn elem&&elem.nodeName&&elem.nodeType==1?'element':type;\n};\n$.type.s=Object.prototype.toString;\n\n/*\n  Method: each\n  \n  Iterates through an iterable applying *f*.\n  \n  Parameters:\n  \n  iterable - (array) The original array.\n  fn - (function) The function to apply to the array elements.\n  \n  Example:\n  (start code js)\n  $jit.util.each([3, 4, 5], function(n) { alert('number ' + n); });\n  (end code)\n*/\n$.each=function(iterable,fn){\nvar type=$.type(iterable);\nif(type=='object'){\nfor(var key in iterable){\nfn(iterable[key],key);}\n}else{\nfor(var i=0,l=iterable.length;i<l;i++){\nfn(iterable[i],i);}\n}\n};\n\n$.indexOf=function(array,item){\nif(Array.indexOf)return array.indexOf(item);\nfor(var i=0,l=array.length;i<l;i++){\nif(array[i]===item)return i;\n}\nreturn-1;\n};\n\n/*\n  Method: map\n  \n  Maps or collects an array by applying *f*.\n  \n  Parameters:\n  \n  array - (array) The original array.\n  f - (function) The function to apply to the array elements.\n  \n  Example:\n  (start code js)\n  $jit.util.map([3, 4, 5], function(n) { return n*n; }); //[9, 16, 25]\n  (end code)\n*/\n$.map=function(array,f){\nvar ans=[];\n$.each(array,function(elem,i){\nans.push(f(elem,i));\n});\nreturn ans;\n};\n\n/*\n  Method: reduce\n  \n  Iteratively applies the binary function *f* storing the result in an accumulator.\n  \n  Parameters:\n  \n  array - (array) The original array.\n  f - (function) The function to apply to the array elements.\n  opt - (optional|mixed) The starting value for the acumulator.\n  \n  Example:\n  (start code js)\n  $jit.util.reduce([3, 4, 5], function(x, y) { return x + y; }, 0); //12\n  (end code)\n*/\n$.reduce=function(array,f,opt){\nvar l=array.length;\nif(l==0)return opt;\nvar acum=arguments.length==3?opt:array[--l];\nwhile(l--){\nacum=f(acum,array[l]);\n}\nreturn acum;\n};\n\n/*\n  Method: merge\n  \n  Merges n-objects and their sub-objects creating a new, fresh object.\n  \n  Parameters:\n  \n  An arbitrary number of objects.\n  \n  Example:\n  (start code js)\n  $jit.util.merge({ 'a': 1, 'b': 2 }, { 'b': 3, 'c': 4 }); //{ 'a':1, 'b': 3, 'c': 4 }\n  (end code)\n*/\n$.merge=function(){\nvar mix={};\nfor(var i=0,l=arguments.length;i<l;i++){\nvar object=arguments[i];\nif($.type(object)!='object')\ncontinue;\nfor(var key in object){\nvar op=object[key],mp=mix[key];\nmix[key]=mp&&$.type(op)=='object'&&$.type(mp)=='object'?$.\nmerge(mp,op):$.unlink(op);\n}\n}\nreturn mix;\n};\n\n$.unlink=function(object){\nvar unlinked;\nswitch($.type(object)){\ncase'object':\nunlinked={};\nfor(var p in object){\nunlinked[p]=$.unlink(object[p]);}\nbreak;\ncase'array':\nunlinked=[];\nfor(var i=0,l=object.length;i<l;i++){\nunlinked[i]=$.unlink(object[i]);}\nbreak;\ndefault:\nreturn object;}\n\nreturn unlinked;\n};\n\n$.zip=function(){\nif(arguments.length===0)return[];\nfor(var j=0,ans=[],l=arguments.length,ml=arguments[0].length;j<ml;j++){\nfor(var i=0,row=[];i<l;i++){\nrow.push(arguments[i][j]);\n}\nans.push(row);\n}\nreturn ans;\n};\n\n/*\n  Method: rgbToHex\n  \n  Converts an RGB array into a Hex string.\n  \n  Parameters:\n  \n  srcArray - (array) An array with R, G and B values\n  \n  Example:\n  (start code js)\n  $jit.util.rgbToHex([255, 255, 255]); //'#ffffff'\n  (end code)\n*/\n$.rgbToHex=function(srcArray,array){\nif(srcArray.length<3)\nreturn null;\nif(srcArray.length==4&&srcArray[3]==0&&!array)\nreturn'transparent';\nvar hex=[];\nfor(var i=0;i<3;i++){\nvar bit=(srcArray[i]-0).toString(16);\nhex.push(bit.length==1?'0'+bit:bit);\n}\nreturn array?hex:'#'+hex.join('');\n};\n\n/*\n  Method: hexToRgb\n  \n  Converts an Hex color string into an RGB array.\n  \n  Parameters:\n  \n  hex - (string) A color hex string.\n  \n  Example:\n  (start code js)\n  $jit.util.hexToRgb('#fff'); //[255, 255, 255]\n  (end code)\n*/\n$.hexToRgb=function(hex){\nif(hex.length!=7){\nhex=hex.match(/^#?(\\w{1,2})(\\w{1,2})(\\w{1,2})$/);\nhex.shift();\nif(hex.length!=3)\nreturn null;\nvar rgb=[];\nfor(var i=0;i<3;i++){\nvar value=hex[i];\nif(value.length==1)\nvalue+=value;\nrgb.push(parseInt(value,16));\n}\nreturn rgb;\n}else{\nhex=parseInt(hex.slice(1),16);\nreturn[hex>>16,hex>>8&0xff,hex&0xff];\n}\n};\n\n$.destroy=function(elem){\n$.clean(elem);\nif(elem.parentNode)\nelem.parentNode.removeChild(elem);\nif(elem.clearAttributes)\nelem.clearAttributes();\n};\n\n$.clean=function(elem){\nfor(var ch=elem.childNodes,i=0,l=ch.length;i<l;i++){\n$.destroy(ch[i]);\n}\n};\n\n/*\n  Method: addEvent\n  \n  Cross-browser add event listener.\n  \n  Parameters:\n  \n  obj - (obj) The Element to attach the listener to.\n  type - (string) The listener type. For example 'click', or 'mousemove'.\n  fn - (function) The callback function to be used when the event is fired.\n  \n  Example:\n  (start code js)\n  $jit.util.addEvent(elem, 'click', function(){ alert('hello'); });\n  (end code)\n*/\n$.addEvent=function(obj,type,fn){\nif(obj.addEventListener)\nobj.addEventListener(type,fn,false);else\n\nobj.attachEvent('on'+type,fn);\n};\n\n$.addEvents=function(obj,typeObj){\nfor(var type in typeObj){\n$.addEvent(obj,type,typeObj[type]);\n}\n};\n\n$.hasClass=function(obj,klass){\nreturn(' '+obj.className+' ').indexOf(' '+klass+' ')>-1;\n};\n\n$.addClass=function(obj,klass){\nif(!$.hasClass(obj,klass))\nobj.className=obj.className+\" \"+klass;\n};\n\n$.removeClass=function(obj,klass){\nobj.className=obj.className.replace(new RegExp(\n'(^|\\\\s)'+klass+'(?:\\\\s|$)'),'$1');\n};\n\n$.getPos=function(elem){\nvar offset=getOffsets(elem);\nvar scroll=getScrolls(elem);\nreturn{\nx:offset.x-scroll.x,\ny:offset.y-scroll.y};\n\n\nfunction getOffsets(elem){\nvar position={\nx:0,\ny:0};\n\nwhile(elem&&!isBody(elem)){\nposition.x+=elem.offsetLeft;\nposition.y+=elem.offsetTop;\nelem=elem.offsetParent;\n}\nreturn position;\n}\n\nfunction getScrolls(elem){\nvar position={\nx:0,\ny:0};\n\nwhile(elem&&!isBody(elem)){\nposition.x+=elem.scrollLeft;\nposition.y+=elem.scrollTop;\nelem=elem.parentNode;\n}\nreturn position;\n}\n\nfunction isBody(element){\nreturn /^(?:body|html)$/i.test(element.tagName);\n}\n};\n\n$.event={\nget:function get(e,win){\nwin=win||window;\nreturn e||win.event;\n},\ngetWheel:function getWheel(e){\nreturn e.wheelDelta?e.wheelDelta/120:-(e.detail||0)/3;\n},\nisRightClick:function isRightClick(e){\nreturn e.which==3||e.button==2;\n},\ngetPos:function getPos(e,win){\n// get mouse position\nwin=win||window;\ne=e||win.event;\nvar doc=win.document;\ndoc=doc.documentElement||doc.body;\n//TODO(nico): make touch event handling better\nif(e.touches&&e.touches.length){\ne=e.touches[0];\n}\nvar page={\nx:e.pageX||e.clientX+doc.scrollLeft,\ny:e.pageY||e.clientY+doc.scrollTop};\n\nreturn page;\n},\nstop:function stop(e){\nif(e.stopPropagation)e.stopPropagation();\ne.cancelBubble=true;\nif(e.preventDefault)e.preventDefault();else\ne.returnValue=false;\n}};\n\n\n$jit.util=$jit.id=$;\n\nvar Class=function Class(properties){\nproperties=properties||{};\nvar klass=function klass(){\nfor(var key in this){\nif(typeof this[key]!='function')\nthis[key]=$.unlink(this[key]);\n}\nthis.constructor=klass;\nif(Class.prototyping)\nreturn this;\nvar instance=this.initialize?this.initialize.apply(this,arguments):\nthis;\n//typize\nthis.$$family='class';\nreturn instance;\n};\n\nfor(var mutator in Class.Mutators){\nif(!properties[mutator])\ncontinue;\nproperties=Class.Mutators[mutator](properties,properties[mutator]);\ndelete properties[mutator];\n}\n\n$.extend(klass,this);\nklass.constructor=Class;\nklass.prototype=properties;\nreturn klass;\n};\n\nClass.Mutators={\n\nImplements:function Implements(self,klasses){\n$.each($.splat(klasses),function(klass){\nClass.prototyping=klass;\nvar instance=typeof klass=='function'?new klass():klass;\nfor(var prop in instance){\nif(!(prop in self)){\nself[prop]=instance[prop];\n}\n}\ndelete Class.prototyping;\n});\nreturn self;\n}};\n\n\n\n$.extend(Class,{\n\ninherit:function inherit(object,properties){\nfor(var key in properties){\nvar override=properties[key];\nvar previous=object[key];\nvar type=$.type(override);\nif(previous&&type=='function'){\nif(override!=previous){\nClass.override(object,key,override);\n}\n}else if(type=='object'){\nobject[key]=$.merge(previous,override);\n}else{\nobject[key]=override;\n}\n}\nreturn object;\n},\n\noverride:function override(object,name,method){\nvar parent=Class.prototyping;\nif(parent&&object[name]!=parent[name])\nparent=null;\nvar override=function override(){\nvar previous=this.parent;\nthis.parent=parent?parent[name]:object[name];\nvar value=method.apply(this,arguments);\nthis.parent=previous;\nreturn value;\n};\nobject[name]=override;\n}});\n\n\n\nClass.prototype.implement=function(){\nvar proto=this.prototype;\n$.each(Array.prototype.slice.call(arguments||[]),function(properties){\nClass.inherit(proto,properties);\n});\nreturn this;\n};\n\n$jit.Class=Class;\n\n/*\n  Object: $jit.json\n  \n  Provides JSON utility functions.\n  \n  Most of these functions are JSON-tree traversal and manipulation functions.\n*/\n$jit.json={\n/*\n     Method: prune\n  \n     Clears all tree nodes having depth greater than maxLevel.\n  \n     Parameters:\n  \n        tree - (object) A JSON tree object. For more information please see <Loader.loadJSON>.\n        maxLevel - (number) An integer specifying the maximum level allowed for this tree. All nodes having depth greater than max level will be deleted.\n\n  */\nprune:function prune(tree,maxLevel){\nthis.each(tree,function(elem,i){\nif(i==maxLevel&&elem.children){\ndelete elem.children;\nelem.children=[];\n}\n});\n},\n/*\n     Method: getParent\n  \n     Returns the parent node of the node having _id_ as id.\n  \n     Parameters:\n  \n        tree - (object) A JSON tree object. See also <Loader.loadJSON>.\n        id - (string) The _id_ of the child node whose parent will be returned.\n\n    Returns:\n\n        A tree JSON node if any, or false otherwise.\n  \n  */\ngetParent:function getParent(tree,id){\nif(tree.id==id)\nreturn false;\nvar ch=tree.children;\nif(ch&&ch.length>0){\nfor(var i=0;i<ch.length;i++){\nif(ch[i].id==id)\nreturn tree;else\n{\nvar ans=this.getParent(ch[i],id);\nif(ans)\nreturn ans;\n}\n}\n}\nreturn false;\n},\n/*\n     Method: getSubtree\n  \n     Returns the subtree that matches the given id.\n  \n     Parameters:\n  \n        tree - (object) A JSON tree object. See also <Loader.loadJSON>.\n        id - (string) A node *unique* identifier.\n  \n     Returns:\n  \n        A subtree having a root node matching the given id. Returns null if no subtree matching the id is found.\n\n  */\ngetSubtree:function getSubtree(tree,id){\nif(tree.id==id)\nreturn tree;\nfor(var i=0,ch=tree.children;ch&&i<ch.length;i++){\nvar t=this.getSubtree(ch[i],id);\nif(t!=null)\nreturn t;\n}\nreturn null;\n},\n/*\n     Method: eachLevel\n  \n      Iterates on tree nodes with relative depth less or equal than a specified level.\n  \n     Parameters:\n  \n        tree - (object) A JSON tree or subtree. See also <Loader.loadJSON>.\n        initLevel - (number) An integer specifying the initial relative level. Usually zero.\n        toLevel - (number) An integer specifying a top level. This method will iterate only through nodes with depth less than or equal this number.\n        action - (function) A function that receives a node and an integer specifying the actual level of the node.\n          \n    Example:\n   (start code js)\n     $jit.json.eachLevel(tree, 0, 3, function(node, depth) {\n        alert(node.name + ' ' + depth);\n     });\n   (end code)\n  */\neachLevel:function eachLevel(tree,initLevel,toLevel,action){\nif(initLevel<=toLevel){\naction(tree,initLevel);\nif(!tree.children)return;\nfor(var i=0,ch=tree.children;i<ch.length;i++){\nthis.eachLevel(ch[i],initLevel+1,toLevel,action);\n}\n}\n},\n/*\n     Method: each\n  \n      A JSON tree iterator.\n  \n     Parameters:\n  \n        tree - (object) A JSON tree or subtree. See also <Loader.loadJSON>.\n        action - (function) A function that receives a node.\n\n    Example:\n    (start code js)\n      $jit.json.each(tree, function(node) {\n        alert(node.name);\n      });\n    (end code)\n          \n  */\neach:function each(tree,action){\nthis.eachLevel(tree,0,Number.MAX_VALUE,action);\n}};\n\n\n\n/*\n     An object containing multiple type of transformations. \n*/\n\n$jit.Trans={\n$extend:true,\n\nlinear:function linear(p){\nreturn p;\n}};\n\n\nvar Trans=$jit.Trans;\n\n(function(){\n\nvar makeTrans=function makeTrans(transition,params){\nparams=$.splat(params);\nreturn $.extend(transition,{\neaseIn:function easeIn(pos){\nreturn transition(pos,params);\n},\neaseOut:function easeOut(pos){\nreturn 1-transition(1-pos,params);\n},\neaseInOut:function easeInOut(pos){\nreturn pos<=0.5?transition(2*pos,params)/2:(2-transition(\n2*(1-pos),params))/2;\n}});\n\n};\n\nvar transitions={\n\nPow:function Pow(p,x){\nreturn Math.pow(p,x[0]||6);\n},\n\nExpo:function Expo(p){\nreturn Math.pow(2,8*(p-1));\n},\n\nCirc:function Circ(p){\nreturn 1-Math.sin(Math.acos(p));\n},\n\nSine:function Sine(p){\nreturn 1-Math.sin((1-p)*Math.PI/2);\n},\n\nBack:function Back(p,x){\nx=x[0]||1.618;\nreturn Math.pow(p,2)*((x+1)*p-x);\n},\n\nBounce:function Bounce(p){\nvar value;\nfor(var a=0,b=1;1;a+=b,b/=2){\nif(p>=(7-4*a)/11){\nvalue=b*b-Math.pow((11-6*a-11*p)/4,2);\nbreak;\n}\n}\nreturn value;\n},\n\nElastic:function Elastic(p,x){\nreturn Math.pow(2,10*--p)*\nMath.cos(20*p*Math.PI*(x[0]||1)/3);\n}};\n\n\n\n$.each(transitions,function(val,key){\nTrans[key]=makeTrans(val);\n});\n\n$.each([\n'Quad','Cubic','Quart','Quint'],\nfunction(elem,i){\nTrans[elem]=makeTrans(function(p){\nreturn Math.pow(p,[\ni+2]);\n\n});\n});\n\n})();\n\n/*\n   A Class that can perform animations for generic objects.\n\n   If you are looking for animation transitions please take a look at the <Trans> object.\n\n   Used by:\n\n   <Graph.Plot>\n   \n   Based on:\n   \n   The Animation class is based in the MooTools Framework <http://mootools.net>. Copyright (c) 2006-2009 Valerio Proietti, <http://mad4milk.net/>. MIT license <http://mootools.net/license.txt>.\n\n*/\n\nvar Animation=new Class({\n\ninitialize:function initialize(options){\nthis.setOptions(options);\n},\n\nsetOptions:function setOptions(options){\nvar opt={\nduration:2500,\nfps:40,\ntransition:Trans.Quart.easeInOut,\ncompute:$.empty,\ncomplete:$.empty,\nlink:'ignore'};\n\nthis.opt=$.merge(opt,options||{});\nreturn this;\n},\n\nstep:function step(){\nvar time=$.time(),opt=this.opt;\nif(time<this.time+opt.duration){\nvar delta=opt.transition((time-this.time)/opt.duration);\nopt.compute(delta);\n}else{\nthis.timer=clearInterval(this.timer);\nopt.compute(1);\nopt.complete();\n}\n},\n\nstart:function start(){\nif(!this.check())\nreturn this;\nthis.time=0;\nthis.startTimer();\nreturn this;\n},\n\nstartTimer:function startTimer(){\nvar that=this,fps=this.opt.fps;\nif(this.timer)\nreturn false;\nthis.time=$.time()-this.time;\nthis.timer=setInterval(function(){\nthat.step();\n},Math.round(1000/fps));\nreturn true;\n},\n\npause:function pause(){\nthis.stopTimer();\nreturn this;\n},\n\nresume:function resume(){\nthis.startTimer();\nreturn this;\n},\n\nstopTimer:function stopTimer(){\nif(!this.timer)\nreturn false;\nthis.time=$.time()-this.time;\nthis.timer=clearInterval(this.timer);\nreturn true;\n},\n\ncheck:function check(){\nif(!this.timer)\nreturn true;\nif(this.opt.link=='cancel'){\nthis.stopTimer();\nreturn true;\n}\nreturn false;\n}});\n\n\n\nvar Options=function Options(){\nvar args=arguments;\nfor(var i=0,l=args.length,ans={};i<l;i++){\nvar opt=Options[args[i]];\nif(opt.$extend){\n$.extend(ans,opt);\n}else{\nans[args[i]]=opt;\n}\n}\nreturn ans;\n};\n\n/*\n * File: Options.Canvas.js\n *\n*/\n\n/*\n  Object: Options.Canvas\n  \n  These are Canvas general options, like where to append it in the DOM, its dimensions, background, \n  and other more advanced options.\n  \n  Syntax:\n  \n  (start code js)\n\n  Options.Canvas = {\n    injectInto: 'id',\n    type: '2D', //'3D'\n    width: false,\n    height: false,\n    useCanvas: false,\n    withLabels: true,\n    background: false\n  };  \n  (end code)\n  \n  Example:\n  \n  (start code js)\n  var viz = new $jit.Viz({\n    injectInto: 'someContainerId',\n    width: 500,\n    height: 700\n  });\n  (end code)\n  \n  Parameters:\n  \n  injectInto - *required* (string|element) The id of the DOM container for the visualization. It can also be an Element provided that it has an id.\n  type - (string) Context type. Default's 2D but can be 3D for webGL enabled browsers.\n  width - (number) Default's to the *container's offsetWidth*. The width of the canvas.\n  height - (number) Default's to the *container's offsetHeight*. The height of the canvas.\n  useCanvas - (boolean|object) Default's *false*. You can pass another <Canvas> instance to be used by the visualization.\n  withLabels - (boolean) Default's *true*. Whether to use a label container for the visualization.\n  background - (boolean|object) Default's *false*. An object containing information about the rendering of a background canvas.\n*/\n\nOptions.Canvas={\n$extend:true,\n\ninjectInto:'id',\ntype:'2D',\nwidth:false,\nheight:false,\nuseCanvas:false,\nwithLabels:true,\nbackground:false,\n\nScene:{\nLighting:{\nenable:false,\nambient:[1,1,1],\ndirectional:{\ndirection:{x:-100,y:-100,z:-100},\ncolor:[0.5,0.3,0.1]}}}};\n\n\n\n\n\n/*\n * File: Options.Node.js\n *\n*/\n\n/*\n  Object: Options.Node\n\n  Provides Node rendering options for Tree and Graph based visualizations.\n\n  Syntax:\n    \n  (start code js)\n  Options.Node = {\n    overridable: false,\n    type: 'circle',\n    color: '#ccb',\n    alpha: 1,\n    dim: 3,\n    height: 20,\n    width: 90,\n    autoHeight: false,\n    autoWidth: false,\n    lineWidth: 1,\n    transform: true,\n    align: \"center\",\n    angularWidth:1,\n    span:1,\n    CanvasStyles: {}\n  };\n  (end code)\n  \n  Example:\n  \n  (start code js)\n  var viz = new $jit.Viz({\n    Node: {\n      overridable: true,\n      width: 30,\n      autoHeight: true,\n      type: 'rectangle'\n    }\n  });\n  (end code)\n  \n  Parameters:\n\n  overridable - (boolean) Default's *false*. Determine whether or not general node properties can be overridden by a particular <Graph.Node>.\n  type - (string) Default's *circle*. Node's shape. Node built-in types include 'circle', 'rectangle', 'square', 'ellipse', 'triangle', 'star'. The default Node type might vary in each visualization. You can also implement (non built-in) custom Node types into your visualizations.\n  color - (string) Default's *#ccb*. Node color.\n  alpha - (number) Default's *1*. The Node's alpha value. *1* is for full opacity.\n  dim - (number) Default's *3*. An extra parameter used by 'circle', 'square', 'triangle' and 'star' node types. Depending on each shape, this parameter can set the radius of a circle, half the length of the side of a square, half the base and half the height of a triangle or the length of a side of a star (concave decagon).\n  height - (number) Default's *20*. Used by 'rectangle' and 'ellipse' node types. The height of the node shape.\n  width - (number) Default's *90*. Used by 'rectangle' and 'ellipse' node types. The width of the node shape.\n  autoHeight - (boolean) Default's *false*. Whether to set an auto height for the node depending on the content of the Node's label.\n  autoWidth - (boolean) Default's *false*. Whether to set an auto width for the node depending on the content of the Node's label.\n  lineWidth - (number) Default's *1*. Used only by some Node shapes. The line width of the strokes of a node.\n  transform - (boolean) Default's *true*. Only used by the <Hypertree> visualization. Whether to scale the nodes according to the moebius transformation.\n  align - (string) Default's *center*. Possible values are 'center', 'left' or 'right'. Used only by the <ST> visualization, these parameters are used for aligning nodes when some of they dimensions vary.\n  angularWidth - (number) Default's *1*. Used in radial layouts (like <RGraph> or <Sunburst> visualizations). The amount of relative 'space' set for a node.\n  span - (number) Default's *1*. Used in radial layouts (like <RGraph> or <Sunburst> visualizations). The angle span amount set for a node.\n  CanvasStyles - (object) Default's an empty object (i.e. {}). Attach any other canvas specific property that you'd set to the canvas context before plotting a Node.\n\n*/\nOptions.Node={\n$extend:false,\n\noverridable:false,\ntype:'circle',\ncolor:'#ccb',\nalpha:1,\ndim:3,\nheight:20,\nwidth:90,\nautoHeight:false,\nautoWidth:false,\nlineWidth:1,\ntransform:true,\nalign:\"center\",\nangularWidth:1,\nspan:1,\n//Raw canvas styles to be\n//applied to the context instance\n//before plotting a node\nCanvasStyles:{}};\n\n\n\n/*\n * File: Options.Edge.js\n *\n*/\n\n/*\n  Object: Options.Edge\n\n  Provides Edge rendering options for Tree and Graph based visualizations.\n\n  Syntax:\n    \n  (start code js)\n  Options.Edge = {\n    overridable: false,\n    type: 'line',\n    color: '#ccb',\n    lineWidth: 1,\n    dim:15,\n    alpha: 1,\n    CanvasStyles: {}\n  };\n  (end code)\n  \n  Example:\n  \n  (start code js)\n  var viz = new $jit.Viz({\n    Edge: {\n      overridable: true,\n      type: 'line',\n      color: '#fff',\n      CanvasStyles: {\n        shadowColor: '#ccc',\n        shadowBlur: 10\n      }\n    }\n  });\n  (end code)\n  \n  Parameters:\n    \n   overridable - (boolean) Default's *false*. Determine whether or not general edges properties can be overridden by a particular <Graph.Adjacence>.\n   type - (string) Default's 'line'. Edge styles include 'line', 'hyperline', 'arrow'. The default Edge type might vary in each visualization. You can also implement custom Edge types.\n   color - (string) Default's '#ccb'. Edge color.\n   lineWidth - (number) Default's *1*. Line/Edge width.\n   alpha - (number) Default's *1*. The Edge's alpha value. *1* is for full opacity.\n   dim - (number) Default's *15*. An extra parameter used by other complex shapes such as quadratic, bezier or arrow, to determine the shape's diameter.\n   epsilon - (number) Default's *7*. Only used when using *enableForEdges* in <Options.Events>. This dimension is used to create an area for the line where the contains method for the edge returns *true*.\n   CanvasStyles - (object) Default's an empty object (i.e. {}). Attach any other canvas specific property that you'd set to the canvas context before plotting an Edge.\n\n  See also:\n   \n   If you want to know more about how to customize Node/Edge data per element, in the JSON or programmatically, take a look at this article.\n*/\nOptions.Edge={\n$extend:false,\n\noverridable:false,\ntype:'line',\ncolor:'#ccb',\nlineWidth:1,\ndim:15,\nalpha:1,\nepsilon:7,\n\n//Raw canvas styles to be\n//applied to the context instance\n//before plotting an edge\nCanvasStyles:{}};\n\n\n\n/*\n * File: Options.Fx.js\n *\n*/\n\n/*\n  Object: Options.Fx\n\n  Provides animation options like duration of the animations, frames per second and animation transitions.  \n\n  Syntax:\n  \n  (start code js)\n    Options.Fx = {\n      fps:40,\n      duration: 2500,\n      transition: $jit.Trans.Quart.easeInOut,\n      clearCanvas: true\n    };\n  (end code)\n  \n  Example:\n  \n  (start code js)\n  var viz = new $jit.Viz({\n    duration: 1000,\n    fps: 35,\n    transition: $jit.Trans.linear\n  });\n  (end code)\n  \n  Parameters:\n  \n  clearCanvas - (boolean) Default's *true*. Whether to clear the frame/canvas when the viz is plotted or animated.\n  duration - (number) Default's *2500*. Duration of the animation in milliseconds.\n  fps - (number) Default's *40*. Frames per second.\n  transition - (object) Default's *$jit.Trans.Quart.easeInOut*. The transition used for the animations. See below for a more detailed explanation.\n  \n  Object: $jit.Trans\n  \n  This object is used for specifying different animation transitions in all visualizations.\n\n  There are many different type of animation transitions.\n\n  linear:\n\n  Displays a linear transition\n\n  >Trans.linear\n  \n  (see Linear.png)\n\n  Quad:\n\n  Displays a Quadratic transition.\n\n  >Trans.Quad.easeIn\n  >Trans.Quad.easeOut\n  >Trans.Quad.easeInOut\n  \n (see Quad.png)\n\n Cubic:\n\n Displays a Cubic transition.\n\n >Trans.Cubic.easeIn\n >Trans.Cubic.easeOut\n >Trans.Cubic.easeInOut\n\n (see Cubic.png)\n\n Quart:\n\n Displays a Quartetic transition.\n\n >Trans.Quart.easeIn\n >Trans.Quart.easeOut\n >Trans.Quart.easeInOut\n\n (see Quart.png)\n\n Quint:\n\n Displays a Quintic transition.\n\n >Trans.Quint.easeIn\n >Trans.Quint.easeOut\n >Trans.Quint.easeInOut\n\n (see Quint.png)\n\n Expo:\n\n Displays an Exponential transition.\n\n >Trans.Expo.easeIn\n >Trans.Expo.easeOut\n >Trans.Expo.easeInOut\n\n (see Expo.png)\n\n Circ:\n\n Displays a Circular transition.\n\n >Trans.Circ.easeIn\n >Trans.Circ.easeOut\n >Trans.Circ.easeInOut\n\n (see Circ.png)\n\n Sine:\n\n Displays a Sineousidal transition.\n\n >Trans.Sine.easeIn\n >Trans.Sine.easeOut\n >Trans.Sine.easeInOut\n\n (see Sine.png)\n\n Back:\n\n >Trans.Back.easeIn\n >Trans.Back.easeOut\n >Trans.Back.easeInOut\n\n (see Back.png)\n\n Bounce:\n\n Bouncy transition.\n\n >Trans.Bounce.easeIn\n >Trans.Bounce.easeOut\n >Trans.Bounce.easeInOut\n\n (see Bounce.png)\n\n Elastic:\n\n Elastic curve.\n\n >Trans.Elastic.easeIn\n >Trans.Elastic.easeOut\n >Trans.Elastic.easeInOut\n\n (see Elastic.png)\n \n Based on:\n     \n Easing and Transition animation methods are based in the MooTools Framework <http://mootools.net>. Copyright (c) 2006-2010 Valerio Proietti, <http://mad4milk.net/>. MIT license <http://mootools.net/license.txt>.\n\n\n*/\nOptions.Fx={\n$extend:true,\n\nfps:40,\nduration:2500,\ntransition:$jit.Trans.Quart.easeInOut,\nclearCanvas:true};\n\n\n/*\n * File: Options.Label.js\n *\n*/\n/*\n  Object: Options.Label\n\n  Provides styling for Labels such as font size, family, etc. Also sets Node labels as HTML, SVG or Native canvas elements.  \n\n  Syntax:\n  \n  (start code js)\n    Options.Label = {\n      overridable: false,\n      type: 'HTML', //'SVG', 'Native'\n      style: ' ',\n      size: 10,\n      family: 'sans-serif',\n      textAlign: 'center',\n      textBaseline: 'alphabetic',\n      color: '#fff'\n    };\n  (end code)\n  \n  Example:\n  \n  (start code js)\n  var viz = new $jit.Viz({\n    Label: {\n      type: 'Native',\n      size: 11,\n      color: '#ccc'\n    }\n  });\n  (end code)\n  \n  Parameters:\n    \n  overridable - (boolean) Default's *false*. Determine whether or not general label properties can be overridden by a particular <Graph.Node>.\n  type - (string) Default's *HTML*. The type for the labels. Can be 'HTML', 'SVG' or 'Native' canvas labels.\n  style - (string) Default's *empty string*. Can be 'italic' or 'bold'. This parameter is only taken into account when using 'Native' canvas labels. For DOM based labels the className *node* is added to the DOM element for styling via CSS. You can also use <Options.Controller> methods to style individual labels.\n  size - (number) Default's *10*. The font's size. This parameter is only taken into account when using 'Native' canvas labels. For DOM based labels the className *node* is added to the DOM element for styling via CSS. You can also use <Options.Controller> methods to style individual labels.\n  family - (string) Default's *sans-serif*. The font's family. This parameter is only taken into account when using 'Native' canvas labels. For DOM based labels the className *node* is added to the DOM element for styling via CSS. You can also use <Options.Controller> methods to style individual labels.\n  color - (string) Default's *#fff*. The font's color. This parameter is only taken into account when using 'Native' canvas labels. For DOM based labels the className *node* is added to the DOM element for styling via CSS. You can also use <Options.Controller> methods to style individual labels.\n*/\nOptions.Label={\n$extend:false,\n\noverridable:false,\ntype:'HTML',//'SVG', 'Native'\nstyle:' ',\nsize:10,\nfamily:'sans-serif',\ntextAlign:'center',\ntextBaseline:'alphabetic',\ncolor:'#fff'};\n\n\n\n/*\n * File: Options.Tips.js\n *\n */\n\n/*\n  Object: Options.Tips\n  \n  Tips options\n  \n  Syntax:\n    \n  (start code js)\n  Options.Tips = {\n    enable: false,\n    type: 'auto',\n    offsetX: 20,\n    offsetY: 20,\n    onShow: $.empty,\n    onHide: $.empty\n  };\n  (end code)\n  \n  Example:\n  \n  (start code js)\n  var viz = new $jit.Viz({\n    Tips: {\n      enable: true,\n      type: 'Native',\n      offsetX: 10,\n      offsetY: 10,\n      onShow: function(tip, node) {\n        tip.innerHTML = node.name;\n      }\n    }\n  });\n  (end code)\n\n  Parameters:\n\n  enable - (boolean) Default's *false*. If *true*, a tooltip will be shown when a node is hovered. The tooltip is a div DOM element having \"tip\" as CSS class. \n  type - (string) Default's *auto*. Defines where to attach the MouseEnter/Leave tooltip events. Possible values are 'Native' to attach them to the canvas or 'HTML' to attach them to DOM label elements (if defined). 'auto' sets this property to the value of <Options.Label>'s *type* property.\n  offsetX - (number) Default's *20*. An offset added to the current tooltip x-position (which is the same as the current mouse position). Default's 20.\n  offsetY - (number) Default's *20*. An offset added to the current tooltip y-position (which is the same as the current mouse position). Default's 20.\n  onShow(tip, node) - This callack is used right before displaying a tooltip. The first formal parameter is the tip itself (which is a DivElement). The second parameter may be a <Graph.Node> for graph based visualizations or an object with label, value properties for charts.\n  onHide() - This callack is used when hiding a tooltip.\n\n*/\nOptions.Tips={\n$extend:false,\n\nenable:false,\ntype:'auto',\noffsetX:20,\noffsetY:20,\nforce:false,\nonShow:$.empty,\nonHide:$.empty};\n\n\n\n/*\n * File: Options.NodeStyles.js\n *\n */\n\n/*\n  Object: Options.NodeStyles\n  \n  Apply different styles when a node is hovered or selected.\n  \n  Syntax:\n    \n  (start code js)\n  Options.NodeStyles = {\n    enable: false,\n    type: 'auto',\n    stylesHover: false,\n    stylesClick: false\n  };\n  (end code)\n  \n  Example:\n  \n  (start code js)\n  var viz = new $jit.Viz({\n    NodeStyles: {\n      enable: true,\n      type: 'Native',\n      stylesHover: {\n        dim: 30,\n        color: '#fcc'\n      },\n      duration: 600\n    }\n  });\n  (end code)\n\n  Parameters:\n  \n  enable - (boolean) Default's *false*. Whether to enable this option.\n  type - (string) Default's *auto*. Use this to attach the hover/click events in the nodes or the nodes labels (if they have been defined as DOM elements: 'HTML' or 'SVG', see <Options.Label> for more details). The default 'auto' value will set NodeStyles to the same type defined for <Options.Label>.\n  stylesHover - (boolean|object) Default's *false*. An object with node styles just like the ones defined for <Options.Node> or *false* otherwise.\n  stylesClick - (boolean|object) Default's *false*. An object with node styles just like the ones defined for <Options.Node> or *false* otherwise.\n*/\n\nOptions.NodeStyles={\n$extend:false,\n\nenable:false,\ntype:'auto',\nstylesHover:false,\nstylesClick:false};\n\n\n\n/*\n * File: Options.Events.js\n *\n*/\n\n/*\n  Object: Options.Events\n  \n  Configuration for adding mouse/touch event handlers to Nodes.\n  \n  Syntax:\n  \n  (start code js)\n  Options.Events = {\n    enable: false,\n    enableForEdges: false,\n    type: 'auto',\n    onClick: $.empty,\n    onRightClick: $.empty,\n    onMouseMove: $.empty,\n    onMouseEnter: $.empty,\n    onMouseLeave: $.empty,\n    onDragStart: $.empty,\n    onDragMove: $.empty,\n    onDragCancel: $.empty,\n    onDragEnd: $.empty,\n    onTouchStart: $.empty,\n    onTouchMove: $.empty,\n    onTouchEnd: $.empty,\n    onTouchCancel: $.empty,\n    onMouseWheel: $.empty\n  };\n  (end code)\n  \n  Example:\n  \n  (start code js)\n  var viz = new $jit.Viz({\n    Events: {\n      enable: true,\n      onClick: function(node, eventInfo, e) {\n        viz.doSomething();\n      },\n      onMouseEnter: function(node, eventInfo, e) {\n        viz.canvas.getElement().style.cursor = 'pointer';\n      },\n      onMouseLeave: function(node, eventInfo, e) {\n        viz.canvas.getElement().style.cursor = '';\n      }\n    }\n  });\n  (end code)\n  \n  Parameters:\n  \n  enable - (boolean) Default's *false*. Whether to enable the Event system.\n  enableForEdges - (boolean) Default's *false*. Whether to track events also in arcs. If *true* the same callbacks -described below- are used for nodes *and* edges. A simple duck type check for edges is to check for *node.nodeFrom*.\n  type - (string) Default's 'auto'. Whether to attach the events onto the HTML labels (via event delegation) or to use the custom 'Native' canvas Event System of the library. 'auto' is set when you let the <Options.Label> *type* parameter decide this.\n  onClick(node, eventInfo, e) - Triggered when a user performs a click in the canvas. *node* is the <Graph.Node> clicked or false if no node has been clicked. *e* is the grabbed event (should return the native event in a cross-browser manner). *eventInfo* is an object containing useful methods like *getPos* to get the mouse position relative to the canvas. \n  onRightClick(node, eventInfo, e) - Triggered when a user performs a right click in the canvas. *node* is the <Graph.Node> right clicked or false if no node has been clicked. *e* is the grabbed event (should return the native event in a cross-browser manner). *eventInfo* is an object containing useful methods like *getPos* to get the mouse position relative to the canvas. \n  onMouseMove(node, eventInfo, e) - Triggered when the user moves the mouse. *node* is the <Graph.Node> under the cursor as it's moving over the canvas or false if no node has been clicked. *e* is the grabbed event (should return the native event in a cross-browser manner).  *eventInfo* is an object containing useful methods like *getPos* to get the mouse position relative to the canvas.\n  onMouseEnter(node, eventInfo, e) - Triggered when a user moves the mouse over a node. *node* is the <Graph.Node> that the mouse just entered. *e* is the grabbed event (should return the native event in a cross-browser manner). *eventInfo* is an object containing useful methods like *getPos* to get the mouse position relative to the canvas. \n  onMouseLeave(node, eventInfo, e) - Triggered when the user mouse-outs a node. *node* is the <Graph.Node> 'mouse-outed'. *e* is the grabbed event (should return the native event in a cross-browser manner). *eventInfo* is an object containing useful methods like *getPos* to get the mouse position relative to the canvas. \n  onDragStart(node, eventInfo, e) - Triggered when the user mouse-downs over a node. *node* is the <Graph.Node> being pressed. *e* is the grabbed event (should return the native event in a cross-browser manner). *eventInfo* is an object containing useful methods like *getPos* to get the mouse position relative to the canvas. \n  onDragMove(node, eventInfo, e) - Triggered when a user, after pressing the mouse button over a node, moves the mouse around. *node* is the <Graph.Node> being dragged. *e* is the grabbed event (should return the native event in a cross-browser manner). *eventInfo* is an object containing useful methods like *getPos* to get the mouse position relative to the canvas. \n  onDragEnd(node, eventInfo, e) - Triggered when a user finished dragging a node. *node* is the <Graph.Node> being dragged. *e* is the grabbed event (should return the native event in a cross-browser manner). *eventInfo* is an object containing useful methods like *getPos* to get the mouse position relative to the canvas. \n  onDragCancel(node, eventInfo, e) - Triggered when the user releases the mouse button over a <Graph.Node> that wasn't dragged (i.e. the user didn't perform any mouse movement after pressing the mouse button). *node* is the <Graph.Node> being dragged. *e* is the grabbed event (should return the native event in a cross-browser manner). *eventInfo* is an object containing useful methods like *getPos* to get the mouse position relative to the canvas. \n  onTouchStart(node, eventInfo, e) - Behaves just like onDragStart. \n  onTouchMove(node, eventInfo, e) - Behaves just like onDragMove. \n  onTouchEnd(node, eventInfo, e) - Behaves just like onDragEnd. \n  onTouchCancel(node, eventInfo, e) - Behaves just like onDragCancel.\n  onMouseWheel(delta, e) - Triggered when the user uses the mouse scroll over the canvas. *delta* is 1 or -1 depending on the sense of the mouse scroll.\n*/\n\nOptions.Events={\n$extend:false,\n\nenable:false,\nenableForEdges:false,\ntype:'auto',\nonClick:$.empty,\nonRightClick:$.empty,\nonMouseMove:$.empty,\nonMouseEnter:$.empty,\nonMouseLeave:$.empty,\nonDragStart:$.empty,\nonDragMove:$.empty,\nonDragCancel:$.empty,\nonDragEnd:$.empty,\nonTouchStart:$.empty,\nonTouchMove:$.empty,\nonTouchEnd:$.empty,\nonMouseWheel:$.empty};\n\n\n/*\n * File: Options.Navigation.js\n *\n*/\n\n/*\n  Object: Options.Navigation\n  \n  Panning and zooming options for Graph/Tree based visualizations. These options are implemented \n  by all visualizations except charts (<AreaChart>, <BarChart> and <PieChart>).\n  \n  Syntax:\n  \n  (start code js)\n\n  Options.Navigation = {\n    enable: false,\n    type: 'auto',\n    panning: false, //true, 'avoid nodes'\n    zooming: false\n  };\n  \n  (end code)\n  \n  Example:\n    \n  (start code js)\n  var viz = new $jit.Viz({\n    Navigation: {\n      enable: true,\n      panning: 'avoid nodes',\n      zooming: 20\n    }\n  });\n  (end code)\n  \n  Parameters:\n  \n  enable - (boolean) Default's *false*. Whether to enable Navigation capabilities.\n  type - (string) Default's 'auto'. Whether to attach the navigation events onto the HTML labels (via event delegation) or to use the custom 'Native' canvas Event System of the library. When 'auto' set when you let the <Options.Label> *type* parameter decide this.\n  panning - (boolean|string) Default's *false*. Set this property to *true* if you want to add Drag and Drop panning support to the visualization. You can also set this parameter to 'avoid nodes' to enable DnD panning but disable it if the DnD is taking place over a node. This is useful when some other events like Drag & Drop for nodes are added to <Graph.Nodes>.\n  zooming - (boolean|number) Default's *false*. Set this property to a numeric value to turn mouse-scroll zooming on. The number will be proportional to the mouse-scroll sensitivity.\n  \n*/\n\nOptions.Navigation={\n$extend:false,\n\nenable:false,\ntype:'auto',\npanning:false,//true | 'avoid nodes'\nzooming:false};\n\n\n/*\n * File: Options.Controller.js\n *\n*/\n\n/*\n  Object: Options.Controller\n  \n  Provides controller methods. Controller methods are callback functions that get called at different stages \n  of the animation, computing or plotting of the visualization.\n  \n  Implemented by:\n    \n  All visualizations except charts (<AreaChart>, <BarChart> and <PieChart>).\n  \n  Syntax:\n  \n  (start code js)\n\n  Options.Controller = {\n    onBeforeCompute: $.empty,\n    onAfterCompute:  $.empty,\n    onCreateLabel:   $.empty,\n    onPlaceLabel:    $.empty,\n    onComplete:      $.empty,\n    onBeforePlotLine:$.empty,\n    onAfterPlotLine: $.empty,\n    onBeforePlotNode:$.empty,\n    onAfterPlotNode: $.empty,\n    request:         false\n  };\n  \n  (end code)\n  \n  Example:\n    \n  (start code js)\n  var viz = new $jit.Viz({\n    onBeforePlotNode: function(node) {\n      if(node.selected) {\n        node.setData('color', '#ffc');\n      } else {\n        node.removeData('color');\n      }\n    },\n    onBeforePlotLine: function(adj) {\n      if(adj.nodeFrom.selected && adj.nodeTo.selected) {\n        adj.setData('color', '#ffc');\n      } else {\n        adj.removeData('color');\n      }\n    },\n    onAfterCompute: function() {\n      alert(\"computed!\");\n    }\n  });\n  (end code)\n  \n  Parameters:\n\n   onBeforeCompute(node) - This method is called right before performing all computations and animations. The selected <Graph.Node> is passed as parameter.\n   onAfterCompute() - This method is triggered after all animations or computations ended.\n   onCreateLabel(domElement, node) - This method receives a new label DIV element as first parameter, and the corresponding <Graph.Node> as second parameter. This method will only be called once for each label. This method is useful when adding events or styles to the labels used by the JIT.\n   onPlaceLabel(domElement, node) - This method receives a label DIV element as first parameter and the corresponding <Graph.Node> as second parameter. This method is called each time a label has been placed in the visualization, for example at each step of an animation, and thus it allows you to update the labels properties, such as size or position. Note that onPlaceLabel will be triggered after updating the labels positions. That means that, for example, the left and top css properties are already updated to match the nodes positions. Width and height properties are not set however.\n   onBeforePlotNode(node) - This method is triggered right before plotting each <Graph.Node>. This method is useful for changing a node style right before plotting it.\n   onAfterPlotNode(node) - This method is triggered right after plotting each <Graph.Node>.\n   onBeforePlotLine(adj) - This method is triggered right before plotting a <Graph.Adjacence>. This method is useful for adding some styles to a particular edge before being plotted.\n   onAfterPlotLine(adj) - This method is triggered right after plotting a <Graph.Adjacence>.\n\n    *Used in <ST>, <TM.Base> and <Icicle> visualizations*\n    \n    request(nodeId, level, onComplete) - This method is used for buffering information into the visualization. When clicking on an empty node, the visualization will make a request for this node's subtrees, specifying a given level for this subtree (defined by _levelsToShow_). Once the request is completed, the onComplete callback should be called with the given result. This is useful to provide on-demand information into the visualizations withought having to load the entire information from start. The parameters used by this method are _nodeId_, which is the id of the root of the subtree to request, _level_ which is the depth of the subtree to be requested (0 would mean just the root node). _onComplete_ is an object having the callback method _onComplete.onComplete(json)_ that should be called once the json has been retrieved.  \n \n */\nOptions.Controller={\n$extend:true,\n\nonBeforeCompute:$.empty,\nonAfterCompute:$.empty,\nonCreateLabel:$.empty,\nonPlaceLabel:$.empty,\nonComplete:$.empty,\nonBeforePlotLine:$.empty,\nonAfterPlotLine:$.empty,\nonBeforePlotNode:$.empty,\nonAfterPlotNode:$.empty,\nrequest:false};\n\n\n\n/*\n * File: Extras.js\n * \n * Provides Extras such as Tips and Style Effects.\n * \n * Description:\n * \n * Provides the <Tips> and <NodeStyles> classes and functions.\n *\n */\n\n/*\n * Manager for mouse events (clicking and mouse moving).\n * \n * This class is used for registering objects implementing onClick\n * and onMousemove methods. These methods are called when clicking or\n * moving the mouse around  the Canvas.\n * For now, <Tips> and <NodeStyles> are classes implementing these methods.\n * \n */\nvar ExtrasInitializer={\ninitialize:function initialize(className,viz){\nthis.viz=viz;\nthis.canvas=viz.canvas;\nthis.config=viz.config[className];\nthis.nodeTypes=viz.fx.nodeTypes;\nvar type=this.config.type;\nthis.dom=type=='auto'?viz.config.Label.type!='Native':type!='Native';\nthis.labelContainer=this.dom&&viz.labels.getLabelContainer();\nthis.isEnabled()&&this.initializePost();\n},\ninitializePost:$.empty,\nsetAsProperty:$.lambda(false),\nisEnabled:function isEnabled(){\nreturn this.config.enable;\n},\nisLabel:function isLabel(e,win,group){\ne=$.event.get(e,win);\nvar labelContainer=this.labelContainer,\ntarget=e.target||e.srcElement,\nrelated=e.relatedTarget;\nif(group){\nreturn related&&related==this.viz.canvas.getCtx().canvas&&\n!!target&&this.isDescendantOf(target,labelContainer);\n}else{\nreturn this.isDescendantOf(target,labelContainer);\n}\n},\nisDescendantOf:function isDescendantOf(elem,par){\nwhile(elem&&elem.parentNode){\nif(elem.parentNode==par)\nreturn elem;\nelem=elem.parentNode;\n}\nreturn false;\n}};\n\n\nvar EventsInterface={\nonMouseUp:$.empty,\nonMouseDown:$.empty,\nonMouseMove:$.empty,\nonMouseOver:$.empty,\nonMouseOut:$.empty,\nonMouseWheel:$.empty,\nonTouchStart:$.empty,\nonTouchMove:$.empty,\nonTouchEnd:$.empty,\nonTouchCancel:$.empty};\n\n\nvar MouseEventsManager=new Class({\ninitialize:function initialize(viz){\nthis.viz=viz;\nthis.canvas=viz.canvas;\nthis.node=false;\nthis.edge=false;\nthis.registeredObjects=[];\nthis.attachEvents();\n},\n\nattachEvents:function attachEvents(){\nvar htmlCanvas=this.canvas.getElement(),\nthat=this;\nhtmlCanvas.oncontextmenu=$.lambda(false);\n$.addEvents(htmlCanvas,{\n'mouseup':function mouseup(e,win){\nvar event=$.event.get(e,win);\nthat.handleEvent('MouseUp',e,win,\nthat.makeEventObject(e,win),\n$.event.isRightClick(event));\n},\n'mousedown':function mousedown(e,win){\nvar event=$.event.get(e,win);\nthat.handleEvent('MouseDown',e,win,that.makeEventObject(e,win),\n$.event.isRightClick(event));\n},\n'mousemove':function mousemove(e,win){\nthat.handleEvent('MouseMove',e,win,that.makeEventObject(e,win));\n},\n'mouseover':function mouseover(e,win){\nthat.handleEvent('MouseOver',e,win,that.makeEventObject(e,win));\n},\n'mouseout':function mouseout(e,win){\nthat.handleEvent('MouseOut',e,win,that.makeEventObject(e,win));\n},\n'touchstart':function touchstart(e,win){\nthat.handleEvent('TouchStart',e,win,that.makeEventObject(e,win));\n},\n'touchmove':function touchmove(e,win){\nthat.handleEvent('TouchMove',e,win,that.makeEventObject(e,win));\n},\n'touchend':function touchend(e,win){\nthat.handleEvent('TouchEnd',e,win,that.makeEventObject(e,win));\n}});\n\n//attach mousewheel event\nvar handleMouseWheel=function handleMouseWheel(e,win){\nvar event=$.event.get(e,win);\nvar wheel=$.event.getWheel(event);\nthat.handleEvent('MouseWheel',e,win,wheel);\n};\n//TODO(nico): this is a horrible check for non-gecko browsers!\nif(!document.getBoxObjectFor&&window.mozInnerScreenX==null){\n$.addEvent(htmlCanvas,'mousewheel',handleMouseWheel);\n}else{\nhtmlCanvas.addEventListener('DOMMouseScroll',handleMouseWheel,false);\n}\n},\n\nregister:function register(obj){\nthis.registeredObjects.push(obj);\n},\n\nhandleEvent:function handleEvent(){\nvar args=Array.prototype.slice.call(arguments),\ntype=args.shift();\nfor(var i=0,regs=this.registeredObjects,l=regs.length;i<l;i++){\nregs[i]['on'+type].apply(regs[i],args);\n}\n},\n\nmakeEventObject:function makeEventObject(e,win){\nvar that=this,\ngraph=this.viz.graph,\nfx=this.viz.fx,\nntypes=fx.nodeTypes,\netypes=fx.edgeTypes;\nreturn{\npos:false,\nnode:false,\nedge:false,\ncontains:false,\ngetNodeCalled:false,\ngetEdgeCalled:false,\ngetPos:function getPos(){\n//TODO(nico): check why this can't be cache anymore when using edge detection\n//if(this.pos) return this.pos;\nvar canvas=that.viz.canvas,\ns=canvas.getSize(),\np=canvas.getPos(),\nox=canvas.translateOffsetX,\noy=canvas.translateOffsetY,\nsx=canvas.scaleOffsetX,\nsy=canvas.scaleOffsetY,\npos=$.event.getPos(e,win);\nthis.pos={\nx:(pos.x-p.x-s.width/2-ox)*1/sx,\ny:(pos.y-p.y-s.height/2-oy)*1/sy};\n\nreturn this.pos;\n},\ngetNode:function getNode(){\nif(this.getNodeCalled)return this.node;\nthis.getNodeCalled=true;\nfor(var id in graph.nodes){\nvar n=graph.nodes[id],\ngeom=n&&ntypes[n.getData('type')],\n\n// START METAMAPS CODE\ncontains=n.getData('alpha')!==0&&geom&&geom.contains&&geom.contains.call(fx,n,this.getPos());\n// END METAMAPS CODE\n// ORIGINAL CODE contains = geom && geom.contains && geom.contains.call(fx, n, this.getPos());\n\nif(contains){\nthis.contains=contains;\nreturn that.node=this.node=n;\n}\n}\nreturn that.node=this.node=false;\n},\ngetEdge:function getEdge(){\nif(this.getEdgeCalled)return this.edge;\nthis.getEdgeCalled=true;\nvar hashset={};\nfor(var id in graph.edges){\nvar edgeFrom=graph.edges[id];\nhashset[id]=true;\nfor(var edgeId in edgeFrom){\nif(edgeId in hashset)continue;\nvar e=edgeFrom[edgeId],\ngeom=e&&etypes[e.getData('type')],\n\n// START METAMAPS CODE\ncontains=e.getData('alpha')!==0&&geom&&geom.contains&&geom.contains.call(fx,e,this.getPos());\n// END METAMAPS CODE\n// ORIGINAL CODE contains = geom && geom.contains && geom.contains.call(fx, n, this.getPos());\nif(contains){\nthis.contains=contains;\nreturn that.edge=this.edge=e;\n}\n}\n}\nreturn that.edge=this.edge=false;\n},\ngetContains:function getContains(){\nif(this.getNodeCalled)return this.contains;\nthis.getNode();\nreturn this.contains;\n}};\n\n}});\n\n\n/* \n * Provides the initialization function for <NodeStyles> and <Tips> implemented \n * by all main visualizations.\n *\n */\nvar Extras={\ninitializeExtras:function initializeExtras(){\nvar mem=new MouseEventsManager(this),that=this;\n$.each(['NodeStyles','Tips','Navigation','Events'],function(k){\nvar obj=new Extras.Classes[k](k,that);\nif(obj.isEnabled()){\nmem.register(obj);\n}\nif(obj.setAsProperty()){\nthat[k.toLowerCase()]=obj;\n}\n});\n}};\n\n\nExtras.Classes={};\n/*\n  Class: Events\n   \n  This class defines an Event API to be accessed by the user.\n  The methods implemented are the ones defined in the <Options.Events> object.\n*/\n\nExtras.Classes.Events=new Class({\nImplements:[ExtrasInitializer,EventsInterface],\n\ninitializePost:function initializePost(){\nthis.fx=this.viz.fx;\nthis.ntypes=this.viz.fx.nodeTypes;\nthis.etypes=this.viz.fx.edgeTypes;\n\nthis.hovered=false;\nthis.pressed=false;\nthis.touched=false;\n\nthis.touchMoved=false;\nthis.moved=false;\n\n},\n\nsetAsProperty:$.lambda(true),\n\nonMouseUp:function onMouseUp(e,win,event,isRightClick){\nvar evt=$.event.get(e,win);\nif(!this.moved){\nif(isRightClick){\nthis.config.onRightClick(this.hovered,event,evt);\n}else{\nthis.config.onClick(this.pressed,event,evt);\n}\n}\nif(this.pressed){\nif(this.moved){\nthis.config.onDragEnd(this.pressed,event,evt);\n}else{\nthis.config.onDragCancel(this.pressed,event,evt);\n}\nthis.pressed=this.moved=false;\n}\n},\n\nonMouseOut:function onMouseOut(e,win,event){\n//mouseout a label\nvar evt=$.event.get(e,win),label;\nif(this.dom&&(label=this.isLabel(e,win,true))){\nthis.config.onMouseLeave(this.viz.graph.getNode(label.id),\nevent,evt);\nthis.hovered=false;\nreturn;\n}\n//mouseout canvas\nvar rt=evt.relatedTarget,\ncanvasWidget=this.canvas.getElement();\nwhile(rt&&rt.parentNode){\nif(canvasWidget==rt.parentNode)return;\nrt=rt.parentNode;\n}\nif(this.hovered){\nthis.config.onMouseLeave(this.hovered,\nevent,evt);\nthis.hovered=false;\n}\n},\n\nonMouseOver:function onMouseOver(e,win,event){\n//mouseover a label\nvar evt=$.event.get(e,win),label;\nif(this.dom&&(label=this.isLabel(e,win,true))){\nthis.hovered=this.viz.graph.getNode(label.id);\nthis.config.onMouseEnter(this.hovered,\nevent,evt);\n}\n},\n\nonMouseMove:function onMouseMove(e,win,event){\nvar label,evt=$.event.get(e,win);\nif(this.pressed){\nthis.moved=true;\nthis.config.onDragMove(this.pressed,event,evt);\nreturn;\n}\nif(this.dom){\nthis.config.onMouseMove(this.hovered,\nevent,evt);\n}else{\nif(this.hovered){\nvar hn=this.hovered;\nvar geom=hn.nodeFrom?this.etypes[hn.getData('type')]:this.ntypes[hn.getData('type')];\nvar contains=geom&&geom.contains&&\ngeom.contains.call(this.fx,hn,event.getPos());\nif(contains){\nthis.config.onMouseMove(hn,event,evt);\nreturn;\n}else{\nthis.config.onMouseLeave(hn,event,evt);\nthis.hovered=false;\n}\n}\nif(this.hovered=event.getNode()||this.config.enableForEdges&&event.getEdge()){\nthis.config.onMouseEnter(this.hovered,event,evt);\n}else{\nthis.config.onMouseMove(false,event,evt);\n}\n}\n},\n\nonMouseWheel:function onMouseWheel(e,win,delta){\nthis.config.onMouseWheel(delta,$.event.get(e,win));\n},\n\nonMouseDown:function onMouseDown(e,win,event){\n\n// START METAMAPS CODE\nvar evt=$.event.get(e,win);\nthis.pressed=event.getNode()||this.config.enableForEdges&&event.getEdge();\n// END METAMAPS CODE    \n// ORIGINAL CODE\n/*var evt = $.event.get(e, win), label;\n    if(this.dom) {\n      if(label = this.isLabel(e, win)) {\n        this.pressed = this.viz.graph.getNode(label.id);\n      }\n    } else {\n      this.pressed = event.getNode() || (this.config.enableForEdges && event.getEdge());\n    } */\nthis.pressed&&this.config.onDragStart(this.pressed,event,evt);\n},\n\nonTouchStart:function onTouchStart(e,win,event){\nvar evt=$.event.get(e,win),label;\nif(this.dom&&(label=this.isLabel(e,win))){\nthis.touched=this.viz.graph.getNode(label.id);\n}else{\nthis.touched=event.getNode()||this.config.enableForEdges&&event.getEdge();\n}\nthis.touched&&this.config.onTouchStart(this.touched,event,evt);\n},\n\nonTouchMove:function onTouchMove(e,win,event){\nvar evt=$.event.get(e,win);\nif(this.touched){\nthis.touchMoved=true;\nthis.config.onTouchMove(this.touched,event,evt);\n}\n},\n\nonTouchEnd:function onTouchEnd(e,win,event){\nvar evt=$.event.get(e,win);\nif(this.touched){\nif(this.touchMoved){\nthis.config.onTouchEnd(this.touched,event,evt);\n}else{\nthis.config.onTouchCancel(this.touched,event,evt);\n}\nthis.touched=this.touchMoved=false;\n}\n}});\n\n\n/*\n   Class: Tips\n    \n   A class containing tip related functions. This class is used internally.\n   \n   Used by:\n   \n   <ST>, <Sunburst>, <Hypertree>, <RGraph>, <TM>, <ForceDirected>, <Icicle>\n   \n   See also:\n   \n   <Options.Tips>\n*/\n\nExtras.Classes.Tips=new Class({\nImplements:[ExtrasInitializer,EventsInterface],\n\ninitializePost:function initializePost(){\n//add DOM tooltip\nif(document.body){\nvar tip=$('_tooltip')||document.createElement('div');\ntip.id='_tooltip';\ntip.className='tip';\n$.extend(tip.style,{\nposition:'absolute',\ndisplay:'none',\nzIndex:13000});\n\ndocument.body.appendChild(tip);\nthis.tip=tip;\nthis.node=false;\n}\n},\n\nsetAsProperty:$.lambda(true),\n\nonMouseOut:function onMouseOut(e,win){\n//mouseout a label\nvar evt=$.event.get(e,win);\nif(this.dom&&this.isLabel(e,win,true)){\nthis.hide(true);\nreturn;\n}\n//mouseout canvas\nvar rt=e.relatedTarget,\ncanvasWidget=this.canvas.getElement();\nwhile(rt&&rt.parentNode){\nif(canvasWidget==rt.parentNode)return;\nrt=rt.parentNode;\n}\nthis.hide(false);\n},\n\nonMouseOver:function onMouseOver(e,win){\n//mouseover a label\nvar label;\nif(this.dom&&(label=this.isLabel(e,win,false))){\nthis.node=this.viz.graph.getNode(label.id);\nthis.config.onShow(this.tip,this.node,label);\n}\n},\n\nonMouseMove:function onMouseMove(e,win,opt){\nif(this.dom&&this.isLabel(e,win)){\nthis.setTooltipPosition($.event.getPos(e,win));\n}\nif(!this.dom){\nvar node=opt.getNode();\nif(!node){\nthis.hide(true);\nreturn;\n}\nif(this.config.force||!this.node||this.node.id!=node.id){\nthis.node=node;\nthis.config.onShow(this.tip,node,opt.getContains());\n}\nthis.setTooltipPosition($.event.getPos(e,win));\n}\n},\n\nsetTooltipPosition:function setTooltipPosition(pos){\nvar tip=this.tip,\nstyle=tip.style,\ncont=this.config;\nstyle.display='';\n//get window dimensions\nvar win={\n'height':document.body.clientHeight,\n'width':document.body.clientWidth};\n\n//get tooltip dimensions\nvar obj={\n'width':tip.offsetWidth,\n'height':tip.offsetHeight};\n\n//set tooltip position\nvar x=cont.offsetX,y=cont.offsetY;\nstyle.top=(pos.y+y+obj.height>win.height?\npos.y-obj.height-y:pos.y+y)+'px';\nstyle.left=(pos.x+obj.width+x>win.width?\npos.x-obj.width-x:pos.x+x)+'px';\n},\n\nhide:function hide(triggerCallback){\nthis.tip.style.display='none';\ntriggerCallback&&this.config.onHide();\n}});\n\n\n/*\n  Class: NodeStyles\n   \n  Change node styles when clicking or hovering a node. This class is used internally.\n  \n  Used by:\n  \n  <ST>, <Sunburst>, <Hypertree>, <RGraph>, <TM>, <ForceDirected>, <Icicle>\n  \n  See also:\n  \n  <Options.NodeStyles>\n*/\nExtras.Classes.NodeStyles=new Class({\nImplements:[ExtrasInitializer,EventsInterface],\n\ninitializePost:function initializePost(){\nthis.fx=this.viz.fx;\nthis.types=this.viz.fx.nodeTypes;\nthis.nStyles=this.config;\nthis.nodeStylesOnHover=this.nStyles.stylesHover;\nthis.nodeStylesOnClick=this.nStyles.stylesClick;\nthis.hoveredNode=false;\nthis.fx.nodeFxAnimation=new Animation();\n\nthis.down=false;\nthis.move=false;\n},\n\nonMouseOut:function onMouseOut(e,win){\nthis.down=this.move=false;\nif(!this.hoveredNode)return;\n//mouseout a label\nif(this.dom&&this.isLabel(e,win,true)){\nthis.toggleStylesOnHover(this.hoveredNode,false);\n}\n//mouseout canvas\nvar rt=e.relatedTarget,\ncanvasWidget=this.canvas.getElement();\nwhile(rt&&rt.parentNode){\nif(canvasWidget==rt.parentNode)return;\nrt=rt.parentNode;\n}\nthis.toggleStylesOnHover(this.hoveredNode,false);\nthis.hoveredNode=false;\n},\n\nonMouseOver:function onMouseOver(e,win){\n//mouseover a label\nvar label;\nif(this.dom&&(label=this.isLabel(e,win,true))){\nvar node=this.viz.graph.getNode(label.id);\nif(node.selected)return;\nthis.hoveredNode=node;\nthis.toggleStylesOnHover(this.hoveredNode,true);\n}\n},\n\nonMouseDown:function onMouseDown(e,win,event,isRightClick){\nif(isRightClick)return;\nvar label;\nif(this.dom&&(label=this.isLabel(e,win))){\nthis.down=this.viz.graph.getNode(label.id);\n}else if(!this.dom){\nthis.down=event.getNode();\n}\nthis.move=false;\n},\n\nonMouseUp:function onMouseUp(e,win,event,isRightClick){\nif(isRightClick)return;\nif(!this.move){\nthis.onClick(event.getNode());\n}\nthis.down=this.move=false;\n},\n\ngetRestoredStyles:function getRestoredStyles(node,type){\nvar restoredStyles={},\nnStyles=this['nodeStylesOn'+type];\nfor(var prop in nStyles){\nrestoredStyles[prop]=node.styles['$'+prop];\n}\nreturn restoredStyles;\n},\n\ntoggleStylesOnHover:function toggleStylesOnHover(node,set){\nif(this.nodeStylesOnHover){\nthis.toggleStylesOn('Hover',node,set);\n}\n},\n\ntoggleStylesOnClick:function toggleStylesOnClick(node,set){\nif(this.nodeStylesOnClick){\nthis.toggleStylesOn('Click',node,set);\n}\n},\n\ntoggleStylesOn:function toggleStylesOn(type,node,set){\nvar viz=this.viz;\nvar nStyles=this.nStyles;\nif(set){\nvar that=this;\nif(!node.styles){\nnode.styles=$.merge(node.data,{});\n}\nfor(var s in this['nodeStylesOn'+type]){\nvar $s='$'+s;\nif(!($s in node.styles)){\nnode.styles[$s]=node.getData(s);\n}\n}\nviz.fx.nodeFx($.extend({\n'elements':{\n'id':node.id,\n'properties':that['nodeStylesOn'+type]},\n\ntransition:Trans.Quart.easeOut,\nduration:300,\nfps:40},\nthis.config));\n}else{\nvar restoredStyles=this.getRestoredStyles(node,type);\nviz.fx.nodeFx($.extend({\n'elements':{\n'id':node.id,\n'properties':restoredStyles},\n\ntransition:Trans.Quart.easeOut,\nduration:300,\nfps:40},\nthis.config));\n}\n},\n\nonClick:function onClick(node){\nif(!node)return;\nvar nStyles=this.nodeStylesOnClick;\nif(!nStyles)return;\n//if the node is selected then unselect it\nif(node.selected){\nthis.toggleStylesOnClick(node,false);\ndelete node.selected;\n}else{\n//unselect all selected nodes...\nthis.viz.graph.eachNode(function(n){\nif(n.selected){\nfor(var s in nStyles){\nn.setData(s,n.styles['$'+s],'end');\n}\ndelete n.selected;\n}\n});\n//select clicked node\nthis.toggleStylesOnClick(node,true);\nnode.selected=true;\ndelete node.hovered;\nthis.hoveredNode=false;\n}\n},\n\nonMouseMove:function onMouseMove(e,win,event){\n//if mouse button is down and moving set move=true\nif(this.down)this.move=true;\n//already handled by mouseover/out\nif(this.dom&&this.isLabel(e,win))return;\nvar nStyles=this.nodeStylesOnHover;\nif(!nStyles)return;\n\nif(!this.dom){\nif(this.hoveredNode){\nvar geom=this.types[this.hoveredNode.getData('type')];\nvar contains=geom&&geom.contains&&geom.contains.call(this.fx,\nthis.hoveredNode,event.getPos());\nif(contains)return;\n}\nvar node=event.getNode();\n//if no node is being hovered then just exit\nif(!this.hoveredNode&&!node)return;\n//if the node is hovered then exit\nif(node.hovered)return;\n//select hovered node\nif(node&&!node.selected){\n//check if an animation is running and exit it\nthis.fx.nodeFxAnimation.stopTimer();\n//unselect all hovered nodes...\nthis.viz.graph.eachNode(function(n){\nif(n.hovered&&!n.selected){\nfor(var s in nStyles){\nn.setData(s,n.styles['$'+s],'end');\n}\ndelete n.hovered;\n}\n});\n//select hovered node\nnode.hovered=true;\nthis.hoveredNode=node;\nthis.toggleStylesOnHover(node,true);\n}else if(this.hoveredNode&&!this.hoveredNode.selected){\n//check if an animation is running and exit it\nthis.fx.nodeFxAnimation.stopTimer();\n//unselect hovered node\nthis.toggleStylesOnHover(this.hoveredNode,false);\ndelete this.hoveredNode.hovered;\nthis.hoveredNode=false;\n}\n}\n}});\n\n\nExtras.Classes.Navigation=new Class({\nImplements:[ExtrasInitializer,EventsInterface],\n\ninitializePost:function initializePost(){\nthis.pos=false;\nthis.pressed=false;\n// START METAMAPS CODE\nthis.initDist=false;\n// END METAMAPS CODE\n},\n\nonMouseWheel:function onMouseWheel(e,win,scroll){\nif(!this.config.zooming)return;\n\n// START METAMAPS CODE\ne.preventDefault();\nif(e.target.id!='infovis-canvas')return;\nif(Metamaps.Create.newTopic.beingCreated&&!Metamaps.Create.newTopic.pinned)return;\n// END METAMAPS CODE\n\n//$.event.stop($.event.get(e, win));\n// END METAMAPS CODE\n// ORIGINAL CODE $.event.stop($.event.get(e, win));\n\nvar val=this.config.zooming/1000,\nans=1+scroll*val;\n\n// START METAMAPS CODE\nif(ans>1&&5>=this.canvas.scaleOffsetX||ans<1&&this.canvas.scaleOffsetX>=0.2){\nvar s=this.canvas.getSize(),\np=this.canvas.getPos(),\nox=this.canvas.translateOffsetX,\noy=this.canvas.translateOffsetY,\nsx=this.canvas.scaleOffsetX,\nsy=this.canvas.scaleOffsetY;\n\n//Basically this is just a duplication of the Util function pixelsToCoords, it finds the canvas coordinate of the mouse pointer\nvar pointerCoordX=(e.pageX-p.x-s.width/2-ox)*(1/sx),\npointerCoordY=(e.pageY-p.y-s.height/2-oy)*(1/sy);\n\n//This translates the canvas to be centred over the mouse pointer, then the canvas is zoomed as intended.\nthis.canvas.translate(-pointerCoordX,-pointerCoordY);\nthis.canvas.scale(ans,ans);\n\n//Get the canvas attributes again now that is has changed\ns=this.canvas.getSize(),\np=this.canvas.getPos(),\nox=this.canvas.translateOffsetX,\noy=this.canvas.translateOffsetY,\nsx=this.canvas.scaleOffsetX,\nsy=this.canvas.scaleOffsetY;\nvar newX=(e.pageX-p.x-s.width/2-ox)*(1/sx),\nnewY=(e.pageY-p.y-s.height/2-oy)*(1/sy);\n\n//Translate the canvas to put the pointer back over top the same coordinate it was over before\nthis.canvas.translate(newX-pointerCoordX,newY-pointerCoordY);\n}\n\n// END METAMAPS CODE\n// ORIGINAL CODE this.canvas.scale(ans, ans);\n\n// START METAMAPS CODE\njQuery(document).trigger(Metamaps.JIT.events.zoom,[e]);\n// END METAMAPS CODE\n},\n\nonMouseDown:function onMouseDown(e,win,eventInfo){\n///console.log('mouse down!!!!');\nif(!this.config.panning)return;\n\n//START METAMAPS CODE\nMetamaps.Mouse.changeInX=0;\nMetamaps.Mouse.changeInY=0;\nif(this.config.panning=='avoid nodes'&&eventInfo.getNode()||eventInfo.getEdge())return;\n// END METAMAPS CODE\n// ORIGINAl CODE if(this.config.panning == 'avoid nodes' && (this.dom? this.isLabel(e, win) : eventInfo.getNode())) return;\n\nthis.pressed=true;\n\n//START METAMAPS CODE\nvar rightClick=e.button==2||navigator.platform.indexOf(\"Mac\")!=-1&&e.ctrlKey;\n// TODO make sure this works across browsers  \nif(!Metamaps.Mouse.boxStartCoordinates&&(e.button==0&&e.shiftKey||e.button==0&&e.ctrlKey||rightClick)){\nMetamaps.Mouse.boxStartCoordinates=eventInfo.getPos();\n//console.log('mouse down');\n}\n\nMetamaps.Mouse.didPan=false;\n\n\n\n// END METAMAPS CODE\n\nthis.pos=eventInfo.getPos();\nvar canvas=this.canvas,\nox=canvas.translateOffsetX,\noy=canvas.translateOffsetY,\nsx=canvas.scaleOffsetX,\nsy=canvas.scaleOffsetY;\nthis.pos.x*=sx;\nthis.pos.x+=ox;\nthis.pos.y*=sy;\nthis.pos.y+=oy;\n},\n\nonMouseMove:function onMouseMove(e,win,eventInfo){\nif(!this.config.panning)return;\nif(!this.pressed)return;\nif(this.config.panning=='avoid nodes'&&(this.dom?this.isLabel(e,win):eventInfo.getNode()))return;\n\n// START METAMAPS CODE\nvar rightClick=e.button==2||navigator.platform.indexOf(\"Mac\")!=-1&&e.ctrlKey;\nif(!Metamaps.Mouse.boxStartCoordinates&&(e.button==0&&e.shiftKey||e.button==0&&e.ctrlKey||rightClick)){\nMetamaps.Visualize.mGraph.busy=true;\nMetamaps.boxStartCoordinates=eventInfo.getPos();\n//console.log('mouse move');\nreturn;\n}\nif(Metamaps.Mouse.boxStartCoordinates&&(e.button==0&&e.shiftKey||e.button==0&&e.ctrlKey||rightClick)){\nMetamaps.Visualize.mGraph.busy=true;\nMetamaps.Mouse.boxEndCoordinates={\nx:eventInfo.getPos().x,\ny:eventInfo.getPos().y};\n\nMetamaps.Visualize.mGraph.plot();\n//console.log('mouse move');\nreturn;\n}\nif(rightClick){\nreturn;\n}\nif(e.target.id!='infovis-canvas'){\nthis.pressed=false;\nreturn;\n}\nMetamaps.Mouse.didPan=true;\n// END METAMAPS CODE\n\nvar thispos=this.pos,\ncurrentPos=eventInfo.getPos(),\ncanvas=this.canvas,\nox=canvas.translateOffsetX,\noy=canvas.translateOffsetY,\nsx=canvas.scaleOffsetX,\nsy=canvas.scaleOffsetY;\ncurrentPos.x*=sx;\ncurrentPos.y*=sy;\ncurrentPos.x+=ox;\ncurrentPos.y+=oy;\nvar x=currentPos.x-thispos.x,\ny=currentPos.y-thispos.y;\n\n// START METAMAPS CODE\nMetamaps.Mouse.changeInX=x;\nMetamaps.Mouse.changeInY=y;\n// END METAMAPS CODE\n\nthis.pos=currentPos;\nthis.canvas.translate(x*1/sx,y*1/sy);\n\n// START METAMAPS CODE\njQuery(document).trigger(Metamaps.JIT.events.pan);\n// END METAMAPS CODE\n},\n\nonMouseUp:function onMouseUp(e,win,eventInfo,isRightClick){\nif(!this.config.panning)return;\nthis.pressed=false;\n\n// START METAMAPS CODE\nif(Metamaps.Mouse.didPan)Metamaps.JIT.SmoothPanning();\n// END METAMAPS CODE\n\n},\n\n// START METAMAPS CODE\nonTouchStart:function onTouchStart(e,win,eventInfo){\nif(!this.config.panning)return;\nMetamaps.Mouse.changeInX=0;\nMetamaps.Mouse.changeInY=0;\nif(this.config.panning=='avoid nodes'&&eventInfo.getNode()||eventInfo.getEdge())return;\nthis.pressed=true;\nvar rightClick=e.button==2||navigator.platform.indexOf(\"Mac\")!=-1&&e.ctrlKey;\nif(!Metamaps.Mouse.boxStartCoordinates&&(e.button==0&&e.shiftKey||e.button==0&&e.ctrlKey||rightClick)){\nMetamaps.Mouse.boxStartCoordinates=eventInfo.getPos();\n}\nMetamaps.Mouse.didPan=false;\nthis.pos=eventInfo.getPos();\nvar canvas=this.canvas,\nox=canvas.translateOffsetX,\noy=canvas.translateOffsetY,\nsx=canvas.scaleOffsetX,\nsy=canvas.scaleOffsetY;\nthis.pos.x*=sx;\nthis.pos.x+=ox;\nthis.pos.y*=sy;\nthis.pos.y+=oy;\n},\n\nonTouchMove:function onTouchMove(e,win,eventInfo){\nif(!this.config.panning)return;\nif(!this.pressed)return;\nif(this.config.panning=='avoid nodes'&&(this.dom?this.isLabel(e,win):eventInfo.getNode()))return;\n\nif(e.touches.length==1){\nvar rightClick=e.button==2||navigator.platform.indexOf(\"Mac\")!=-1&&e.ctrlKey;\nif(!Metamaps.Mouse.boxStartCoordinates&&(e.button==0&&e.shiftKey||e.button==0&&e.ctrlKey||rightClick)){\nMetamaps.Visualize.mGraph.busy=true;\nMetamaps.boxStartCoordinates=eventInfo.getPos();\nreturn;\n}\nif(Metamaps.Mouse.boxStartCoordinates&&(e.button==0&&e.shiftKey||e.button==0&&e.ctrlKey||rightClick)){\nMetamaps.Visualize.mGraph.busy=true;\nMetamaps.Mouse.boxEndCoordinates={\nx:eventInfo.getPos().x,\ny:eventInfo.getPos().y};\n\nreturn;\n}\nif(rightClick){\nreturn;\n}\nif(e.target.id!='infovis-canvas'){\nthis.pressed=false;\nreturn;\n}\nMetamaps.Mouse.didPan=true;\nvar thispos=this.pos,\ncurrentPos=eventInfo.getPos(),\ncanvas=this.canvas,\nox=canvas.translateOffsetX,\noy=canvas.translateOffsetY,\nsx=canvas.scaleOffsetX,\nsy=canvas.scaleOffsetY;\ncurrentPos.x*=sx;\ncurrentPos.y*=sy;\ncurrentPos.x+=ox;\ncurrentPos.y+=oy;\nvar x=currentPos.x-thispos.x,\ny=currentPos.y-thispos.y;\nMetamaps.Mouse.changeInX=x;\nMetamaps.Mouse.changeInY=y;\nthis.pos=currentPos;\nthis.canvas.translate(x*1/sx,y*1/sy);\njQuery(document).trigger(Metamaps.JIT.events.pan);\n}\n/*\n    else if (e.touches.length == 2) {\n      var touch1 = e.touches[0]\n      var touch2 = e.touches[1]\n      var canvas = this.canvas\n      \n      callCount++;\n\n      var dist = Metamaps.Util.getDistance({\n        x: touch1.clientX,\n        y: touch1.clientY\n      }, {\n        x: touch2.clientX,\n        y: touch2.clientY\n      })\n\n      if (!this.initDist) {\n        this.initDist = dist\n        this.initScale = canvas.scaleOffsetX\n      }\n      var scale = (dist / this.initDist)\n      \n      document.getElementById(\"header_content\").innerHTML = scale + ' ' + canvas.scaleOffsetX\n      if (30 >= this.initScale * scale && this.initScale * scale >= 0.2) {\n        canvas.scale(this.initScale * scale, this.initScale * scale)\n      }\n      if (canvas.scaleOffsetX < 0.5) {\n        canvas.viz.labels.hideLabels(true)\n      } else if (canvas.scaleOffsetX > 0.5) {\n        canvas.viz.labels.hideLabels(false)\n      }\n      \n      jQuery(document).trigger(Metamaps.JIT.events.zoom);\n    }\n    */\n},\n\nonTouchEnd:function onTouchEnd(e,win,eventInfo,isRightClick){\nif(!this.config.panning)return;\nthis.pressed=false;\nif(Metamaps.Mouse.didPan)Metamaps.JIT.SmoothPanning();\nthis.initDist=false;\n}\n// END METAMAPS CODE\n});\n\n\n/*\n * File: Canvas.js\n *\n */\n\n/*\n Class: Canvas\n \n \tA canvas widget used by all visualizations. The canvas object can be accessed by doing *viz.canvas*. If you want to \n \tknow more about <Canvas> options take a look at <Options.Canvas>.\n \n A canvas widget is a set of DOM elements that wrap the native canvas DOM Element providing a consistent API and behavior \n across all browsers. It can also include Elements to add DOM (SVG or HTML) label support to all visualizations.\n \n Example:\n \n Suppose we have this HTML\n \n (start code xml)\n \t<div id=\"infovis\"></div>\n (end code)\n \n Now we create a new Visualization\n \n (start code js)\n \tvar viz = new $jit.Viz({\n \t\t//Where to inject the canvas. Any div container will do.\n \t\t'injectInto':'infovis',\n\t\t //width and height for canvas. \n\t\t //Default's to the container offsetWidth and Height.\n\t\t 'width': 900,\n\t\t 'height':500\n\t });\n (end code)\n\n The generated HTML will look like this\n \n (start code xml)\n <div id=\"infovis\">\n \t<div id=\"infovis-canvaswidget\" style=\"position:relative;\">\n \t<canvas id=\"infovis-canvas\" width=900 height=500\n \tstyle=\"position:absolute; top:0; left:0; width:900px; height:500px;\" />\n \t<div id=\"infovis-label\"\n \tstyle=\"overflow:visible; position:absolute; top:0; left:0; width:900px; height:0px\">\n \t</div>\n \t</div>\n </div>\n (end code)\n \n As you can see, the generated HTML consists of a canvas DOM Element of id *infovis-canvas* and a div label container\n of id *infovis-label*, wrapped in a main div container of id *infovis-canvaswidget*.\n */\n\nvar Canvas;\n(function(){\n//check for native canvas support\nvar canvasType=typeof HTMLCanvasElement==='undefined'?'undefined':_typeof(HTMLCanvasElement),\nsupportsCanvas=canvasType=='object'||canvasType=='function';\n//create element function\nfunction $E(tag,props){\nvar elem=document.createElement(tag);\nfor(var p in props){\nif(_typeof(props[p])==\"object\"){\n$.extend(elem[p],props[p]);\n}else{\nelem[p]=props[p];\n}\n}\nif(tag==\"canvas\"&&!supportsCanvas&&G_vmlCanvasManager){\nelem=G_vmlCanvasManager.initElement(document.body.appendChild(elem));\n}\nreturn elem;\n}\n//canvas widget which we will call just Canvas\n$jit.Canvas=Canvas=new Class({\ncanvases:[],\npos:false,\nelement:false,\nlabelContainer:false,\ntranslateOffsetX:0,\ntranslateOffsetY:0,\nscaleOffsetX:1,\nscaleOffsetY:1,\n\ninitialize:function initialize(viz,opt){\nthis.viz=viz;\nthis.opt=this.config=opt;\nvar id=$.type(opt.injectInto)=='string'?\nopt.injectInto:opt.injectInto.id,\ntype=opt.type,\nidLabel=id+\"-label\",\nwrapper=$(id),\nwidth=opt.width,// || wrapper.offsetWidth,\nheight=opt.height;// || wrapper.offsetHeight;\nthis.id=id;\n//canvas options\nvar canvasOptions={\ninjectInto:id,\nwidth:width,\nheight:height};\n\n//create main wrapper\nthis.element=$E('div',{\n'id':id+'-canvaswidget',\n'style':{\n'position':'relative',\n'width':width+'px',\n'height':height+'px'}});\n\n\n//create label container\nthis.labelContainer=this.createLabelContainer(opt.Label.type,\nidLabel,canvasOptions);\n//create primary canvas\nthis.canvases.push(new Canvas.Base[type]({\nconfig:$.extend({idSuffix:'-canvas'},canvasOptions),\nplot:function plot(base){\nviz.fx.plot();\n},\nresize:function resize(){\nviz.refresh();\n}}));\n\n//create secondary canvas\nvar back=opt.background;\nif(back){\nvar backCanvas=new Canvas.Background[back.type](viz,$.extend(back,canvasOptions));\nthis.canvases.push(new Canvas.Base[type](backCanvas));\n}\n//insert canvases\nvar len=this.canvases.length;\nwhile(len--){\nthis.element.appendChild(this.canvases[len].canvas);\nif(len>0){\nthis.canvases[len].plot();\n}\n}\nthis.element.appendChild(this.labelContainer);\nwrapper.appendChild(this.element);\n\n//Update canvas position when the page is scrolled.\nvar timer=null,that=this;\n$.addEvent(window,'scroll',function(){\nclearTimeout(timer);\ntimer=setTimeout(function(){\nthat.getPos(true);//update canvas position\n},500);\n});\n},\n/*\n      Method: getCtx\n      \n      Returns the main canvas context object\n      \n      Example:\n      \n      (start code js)\n       var ctx = canvas.getCtx();\n       //Now I can use the native canvas context\n       //and for example change some canvas styles\n       ctx.globalAlpha = 1;\n      (end code)\n    */\ngetCtx:function getCtx(i){\nreturn this.canvases[i||0].getCtx();\n},\n/*\n      Method: getConfig\n      \n      Returns the current Configuration for this Canvas Widget.\n      \n      Example:\n      \n      (start code js)\n       var config = canvas.getConfig();\n      (end code)\n    */\ngetConfig:function getConfig(){\nreturn this.opt;\n},\n/*\n      Method: getElement\n\n      Returns the main Canvas DOM wrapper\n      \n      Example:\n      \n      (start code js)\n       var wrapper = canvas.getElement();\n       //Returns <div id=\"infovis-canvaswidget\" ... >...</div> as element\n      (end code)\n    */\ngetElement:function getElement(){\nreturn this.element;\n},\n/*\n      Method: getSize\n      \n      Returns canvas dimensions.\n      \n      Returns:\n      \n      An object with *width* and *height* properties.\n      \n      Example:\n      (start code js)\n      canvas.getSize(); //returns { width: 900, height: 500 }\n      (end code)\n    */\ngetSize:function getSize(i){\nreturn this.canvases[i||0].getSize();\n},\n/*\n      Method: resize\n      \n      Resizes the canvas.\n      \n      Parameters:\n      \n      width - New canvas width.\n      height - New canvas height.\n      \n      Example:\n      \n      (start code js)\n       canvas.resize(width, height);\n      (end code)\n    \n    */\nresize:function resize(width,height){\nthis.getPos(true);\nthis.translateOffsetX=this.translateOffsetY=0;\nthis.scaleOffsetX=this.scaleOffsetY=1;\n\nfor(var i=0,l=this.canvases.length;i<l;i++){\nthis.canvases[i].resize(width,height);\n}\nvar style=this.element.style;\nstyle.width=width+'px';\nstyle.height=height+'px';\nif(this.labelContainer)\nthis.labelContainer.style.width=width+'px';\n},\n/*\n      Method: translate\n      \n      Applies a translation to the canvas.\n      \n      Parameters:\n      \n      x - (number) x offset.\n      y - (number) y offset.\n      disablePlot - (boolean) Default's *false*. Set this to *true* if you don't want to refresh the visualization.\n      \n      Example:\n      \n      (start code js)\n       canvas.translate(30, 30);\n      (end code)\n    \n    */\ntranslate:function translate(x,y,disablePlot){\nthis.translateOffsetX+=x*this.scaleOffsetX;\nthis.translateOffsetY+=y*this.scaleOffsetY;\nfor(var i=0,l=this.canvases.length;i<l;i++){\nthis.canvases[i].translate(x,y,disablePlot);\n}\n},\n/*\n      Method: scale\n      \n      Scales the canvas.\n      \n      Parameters:\n      \n      x - (number) scale value.\n      y - (number) scale value.\n      disablePlot - (boolean) Default's *false*. Set this to *true* if you don't want to refresh the visualization.\n      \n      Example:\n      \n      (start code js)\n       canvas.scale(0.5, 0.5);\n      (end code)\n    \n    */\nscale:function scale(x,y,disablePlot){\nvar px=this.scaleOffsetX*x,\npy=this.scaleOffsetY*y;\nvar dx=this.translateOffsetX*(x-1)/px,\ndy=this.translateOffsetY*(y-1)/py;\nthis.scaleOffsetX=px;\nthis.scaleOffsetY=py;\nfor(var i=0,l=this.canvases.length;i<l;i++){\nthis.canvases[i].scale(x,y,true);\n}\nthis.translate(dx,dy,false);\n},\n/*\n      Method: getPos\n      \n      Returns the canvas position as an *x, y* object.\n      \n      Parameters:\n      \n      force - (boolean) Default's *false*. Set this to *true* if you want to recalculate the position without using any cache information.\n      \n      Returns:\n      \n      An object with *x* and *y* properties.\n      \n      Example:\n      (start code js)\n      canvas.getPos(true); //returns { x: 900, y: 500 }\n      (end code)\n    */\ngetPos:function getPos(force){\nif(force||!this.pos){\nreturn this.pos=$.getPos(this.getElement());\n}\nreturn this.pos;\n},\n/*\n       Method: clear\n       \n       Clears the canvas.\n    */\nclear:function clear(i){\nthis.canvases[i||0].clear();\n},\n\npath:function path(type,action){\nvar ctx=this.canvases[0].getCtx();\nctx.beginPath();\naction(ctx);\nctx[type]();\nctx.closePath();\n},\n\ncreateLabelContainer:function createLabelContainer(type,idLabel,dim){\nvar NS='http://www.w3.org/2000/svg';\nif(type=='HTML'||type=='Native'){\nreturn $E('div',{\n'id':idLabel,\n'style':{\n'overflow':'visible',\n'position':'absolute',\n'top':0,\n'left':0,\n'width':dim.width+'px',\n'height':0}});\n\n\n}else if(type=='SVG'){\nvar svgContainer=document.createElementNS(NS,'svg:svg');\nsvgContainer.setAttribute(\"width\",dim.width);\nsvgContainer.setAttribute('height',dim.height);\nvar style=svgContainer.style;\nstyle.position='absolute';\nstyle.left=style.top='0px';\nvar labelContainer=document.createElementNS(NS,'svg:g');\nlabelContainer.setAttribute('width',dim.width);\nlabelContainer.setAttribute('height',dim.height);\nlabelContainer.setAttribute('x',0);\nlabelContainer.setAttribute('y',0);\nlabelContainer.setAttribute('id',idLabel);\nsvgContainer.appendChild(labelContainer);\nreturn svgContainer;\n}\n}});\n\n//base canvas wrapper\nCanvas.Base={};\nCanvas.Base['2D']=new Class({\ntranslateOffsetX:0,\ntranslateOffsetY:0,\nscaleOffsetX:1,\nscaleOffsetY:1,\n\ninitialize:function initialize(viz){\nthis.viz=viz;\nthis.opt=viz.config;\nthis.size=false;\nthis.createCanvas();\nthis.translateToCenter();\n},\ncreateCanvas:function createCanvas(){\nvar opt=this.opt,\nwidth=opt.width,\nheight=opt.height;\nthis.canvas=$E('canvas',{\n'id':opt.injectInto+opt.idSuffix,\n'width':width,\n'height':height,\n'style':{\n'position':'absolute',\n'top':0,\n'left':0,\n'width':width+'px',\n'height':height+'px'}});\n\n\n},\ngetCtx:function getCtx(){\nif(!this.ctx)\nreturn this.ctx=this.canvas.getContext('2d');\nreturn this.ctx;\n},\ngetSize:function getSize(){\nif(this.size)return this.size;\nvar canvas=this.canvas;\nreturn this.size={\nwidth:canvas.width,\nheight:canvas.height};\n\n},\ntranslateToCenter:function translateToCenter(ps){\n// START METAMAPS CODE\nvar size=this.getSize();\nvar width=ps?size.width-ps.width-this.translateOffsetX*2:size.width;\nvar height=ps?size.height-ps.height-this.translateOffsetY*2:size.height;\n// ORIGINAL CODE\n// var size = this.getSize(),\n//     width = ps? (size.width - ps.width - this.translateOffsetX*2) : size.width;\n//     height = ps? (size.height - ps.height - this.translateOffsetY*2) : size.height;\n// END METAMAPS CODE\nvar ctx=this.getCtx();\nps&&ctx.scale(1/this.scaleOffsetX,1/this.scaleOffsetY);\nctx.translate(width/2,height/2);\n},\nresize:function resize(width,height){\nvar size=this.getSize(),\ncanvas=this.canvas,\nstyles=canvas.style;\nthis.size=false;\ncanvas.width=width;\ncanvas.height=height;\nstyles.width=width+\"px\";\nstyles.height=height+\"px\";\n\n//small ExCanvas fix\nif(!supportsCanvas){\nthis.translateToCenter(size);\n}else{\nthis.translateToCenter();\n}\nthis.translateOffsetX=\nthis.translateOffsetY=0;\nthis.scaleOffsetX=\nthis.scaleOffsetY=1;\n\nthis.clear();\nthis.viz.resize(width,height,this);\n},\ntranslate:function translate(x,y,disablePlot){\nvar sx=this.scaleOffsetX,\nsy=this.scaleOffsetY;\nthis.translateOffsetX+=x*sx;\nthis.translateOffsetY+=y*sy;\nthis.getCtx().translate(x,y);\n!disablePlot&&this.plot();\n},\nscale:function scale(x,y,disablePlot){\nthis.scaleOffsetX*=x;\nthis.scaleOffsetY*=y;\nthis.getCtx().scale(x,y);\n!disablePlot&&this.plot();\n},\nclear:function clear(){\nvar size=this.getSize(),\nox=this.translateOffsetX,\noy=this.translateOffsetY,\nsx=this.scaleOffsetX,\nsy=this.scaleOffsetY;\nthis.getCtx().clearRect((-size.width/2-ox)*1/sx,\n(-size.height/2-oy)*1/sy,\nsize.width*1/sx,size.height*1/sy);\n},\nplot:function plot(){\nthis.clear();\nthis.viz.plot(this);\n}});\n\n//background canvases\n//TODO(nico): document this!\nCanvas.Background={};\nCanvas.Background.Circles=new Class({\ninitialize:function initialize(viz,options){\nthis.viz=viz;\nthis.config=$.merge({\nidSuffix:'-bkcanvas',\nlevelDistance:100,\nnumberOfCircles:6,\nCanvasStyles:{},\noffset:0},\noptions);\n},\nresize:function resize(width,height,base){\nthis.plot(base);\n},\nplot:function plot(base){\nvar canvas=base.canvas,\nctx=base.getCtx(),\nconf=this.config,\nstyles=conf.CanvasStyles;\n//set canvas styles\nfor(var s in styles){ctx[s]=styles[s];}\nvar n=conf.numberOfCircles,\nrho=conf.levelDistance;\nfor(var i=1;i<=n;i++){\nctx.beginPath();\nctx.arc(0,0,rho*i,0,2*Math.PI,false);\nctx.stroke();\nctx.closePath();\n}\n//TODO(nico): print labels too!\n}});\n\n\n// START METAMAPS CODE\nCanvas.Background.Metamaps=new Class({\ninitialize:function initialize(viz,options){\nthis.viz=viz;\nthis.config=options;\n},\nresize:function resize(width,height,base){\nthis.plot(base);\n},\nplot:function plot(base){\nvar canvas=base.canvas,\nctx=base.getCtx(),\nscale=base.scaleOffsetX;\n//var pattern = new Image();\n//pattern.src = Metamaps.ServerData['cubes.png']\n//var ptrn = ctx.createPattern(pattern, 'repeat');\n//ctx.fillStyle = ptrn;\nctx.fillStyle=Metamaps.Settings.colors.background;\nvar xPoint=-(canvas.width/scale)/2-base.translateOffsetX/scale,\nyPoint=-(canvas.height/scale)/2-base.translateOffsetY/scale;\n//ctx.fillRect(xPoint,yPoint,canvas.width/scale,canvas.height/scale);\n}});\n\n// END METAMAPS CODE\n})();\n\n\n/*\n * File: Polar.js\n * \n * Defines the <Polar> class.\n *\n * Description:\n *\n * The <Polar> class, just like the <Complex> class, is used by the <Hypertree>, <ST> and <RGraph> as a 2D point representation.\n *\n * See also:\n *\n * <http://en.wikipedia.org/wiki/Polar_coordinates>\n *\n*/\n\n/*\n   Class: Polar\n\n   A multi purpose polar representation.\n\n   Description:\n \n   The <Polar> class, just like the <Complex> class, is used by the <Hypertree>, <ST> and <RGraph> as a 2D point representation.\n \n   See also:\n \n   <http://en.wikipedia.org/wiki/Polar_coordinates>\n \n   Parameters:\n\n      theta - An angle.\n      rho - The norm.\n*/\n\nvar Polar=function Polar(theta,rho){\nthis.theta=theta||0;\nthis.rho=rho||0;\n};\n\n$jit.Polar=Polar;\n\nPolar.prototype={\n/*\n       Method: getc\n    \n       Returns a complex number.\n    \n       Parameters:\n\n       simple - _optional_ If *true*, this method will return only an object holding x and y properties and not a <Complex> instance. Default's *false*.\n\n      Returns:\n    \n          A complex number.\n    */\ngetc:function getc(simple){\nreturn this.toComplex(simple);\n},\n\n/*\n       Method: getp\n    \n       Returns a <Polar> representation.\n    \n       Returns:\n    \n          A variable in polar coordinates.\n    */\ngetp:function getp(){\nreturn this;\n},\n\n\n/*\n       Method: set\n    \n       Sets a number.\n\n       Parameters:\n\n       v - A <Complex> or <Polar> instance.\n    \n    */\nset:function set(v){\nv=v.getp();\nthis.theta=v.theta;this.rho=v.rho;\n},\n\n/*\n       Method: setc\n    \n       Sets a <Complex> number.\n\n       Parameters:\n\n       x - A <Complex> number real part.\n       y - A <Complex> number imaginary part.\n    \n    */\nsetc:function setc(x,y){\nthis.rho=Math.sqrt(x*x+y*y);\nthis.theta=Math.atan2(y,x);\nif(this.theta<0)this.theta+=Math.PI*2;\n},\n\n/*\n       Method: setp\n    \n       Sets a polar number.\n\n       Parameters:\n\n       theta - A <Polar> number angle property.\n       rho - A <Polar> number rho property.\n    \n    */\nsetp:function setp(theta,rho){\nthis.theta=theta;\nthis.rho=rho;\n},\n\n/*\n       Method: clone\n    \n       Returns a copy of the current object.\n    \n       Returns:\n    \n          A copy of the real object.\n    */\nclone:function clone(){\nreturn new Polar(this.theta,this.rho);\n},\n\n/*\n       Method: toComplex\n    \n        Translates from polar to cartesian coordinates and returns a new <Complex> instance.\n    \n        Parameters:\n\n        simple - _optional_ If *true* this method will only return an object with x and y properties (and not the whole <Complex> instance). Default's *false*.\n \n        Returns:\n    \n          A new <Complex> instance.\n    */\ntoComplex:function toComplex(simple){\nvar x=Math.cos(this.theta)*this.rho;\nvar y=Math.sin(this.theta)*this.rho;\nif(simple)return{'x':x,'y':y};\nreturn new Complex(x,y);\n},\n\n/*\n       Method: add\n    \n        Adds two <Polar> instances.\n    \n       Parameters:\n\n       polar - A <Polar> number.\n\n       Returns:\n    \n          A new Polar instance.\n    */\nadd:function add(polar){\nreturn new Polar(this.theta+polar.theta,this.rho+polar.rho);\n},\n\n/*\n       Method: scale\n    \n        Scales a polar norm.\n    \n        Parameters:\n\n        number - A scale factor.\n        \n        Returns:\n    \n          A new Polar instance.\n    */\nscale:function scale(number){\nreturn new Polar(this.theta,this.rho*number);\n},\n\n/*\n       Method: equals\n    \n       Comparison method.\n\n       Returns *true* if the theta and rho properties are equal.\n\n       Parameters:\n\n       c - A <Polar> number.\n\n       Returns:\n\n       *true* if the theta and rho parameters for these objects are equal. *false* otherwise.\n    */\nequals:function equals(c){\nreturn this.theta==c.theta&&this.rho==c.rho;\n},\n\n/*\n       Method: $add\n    \n        Adds two <Polar> instances affecting the current object.\n    \n       Paramters:\n\n       polar - A <Polar> instance.\n\n       Returns:\n    \n          The changed object.\n    */\n$add:function $add(polar){\nthis.theta=this.theta+polar.theta;this.rho+=polar.rho;\nreturn this;\n},\n\n/*\n       Method: $madd\n    \n        Adds two <Polar> instances affecting the current object. The resulting theta angle is modulo 2pi.\n    \n       Parameters:\n\n       polar - A <Polar> instance.\n\n       Returns:\n    \n          The changed object.\n    */\n$madd:function $madd(polar){\nthis.theta=(this.theta+polar.theta)%(Math.PI*2);this.rho+=polar.rho;\nreturn this;\n},\n\n\n/*\n       Method: $scale\n    \n        Scales a polar instance affecting the object.\n    \n      Parameters:\n\n      number - A scaling factor.\n\n      Returns:\n    \n          The changed object.\n    */\n$scale:function $scale(number){\nthis.rho*=number;\nreturn this;\n},\n\n/*\n      Method: isZero\n   \n      Returns *true* if the number is zero.\n   \n   */\nisZero:function isZero(){\nvar almostZero=0.0001,abs=Math.abs;\nreturn abs(this.theta)<almostZero&&abs(this.rho)<almostZero;\n},\n\n/*\n       Method: interpolate\n    \n        Calculates a polar interpolation between two points at a given delta moment.\n\n        Parameters:\n      \n        elem - A <Polar> instance.\n        delta - A delta factor ranging [0, 1].\n    \n       Returns:\n    \n          A new <Polar> instance representing an interpolation between _this_ and _elem_\n    */\ninterpolate:function interpolate(elem,delta){\nvar pi=Math.PI,pi2=pi*2;\nvar ch=function ch(t){\nvar a=t<0?t%pi2+pi2:t%pi2;\nreturn a;\n};\nvar tt=this.theta,et=elem.theta;\nvar sum,diff=Math.abs(tt-et);\nif(diff==pi){\nif(tt>et){\nsum=ch(et+(tt-pi2-et)*delta);\n}else{\nsum=ch(et-pi2+(tt-et)*delta);\n}\n}else if(diff>=pi){\nif(tt>et){\nsum=ch(et+(tt-pi2-et)*delta);\n}else{\nsum=ch(et-pi2+(tt-(et-pi2))*delta);\n}\n}else{\nsum=ch(et+(tt-et)*delta);\n}\nvar r=(this.rho-elem.rho)*delta+elem.rho;\nreturn{\n'theta':sum,\n'rho':r};\n\n}};\n\n\n\nvar $P=function $P(a,b){return new Polar(a,b);};\n\nPolar.KER=$P(0,0);\n\n\n\n/*\n * File: Complex.js\n * \n * Defines the <Complex> class.\n *\n * Description:\n *\n * The <Complex> class, just like the <Polar> class, is used by the <Hypertree>, <ST> and <RGraph> as a 2D point representation.\n *\n * See also:\n *\n * <http://en.wikipedia.org/wiki/Complex_number>\n *\n*/\n\n/*\n   Class: Complex\n    \n   A multi-purpose Complex Class with common methods.\n \n   Description:\n \n   The <Complex> class, just like the <Polar> class, is used by the <Hypertree>, <ST> and <RGraph> as a 2D point representation.\n \n   See also:\n \n   <http://en.wikipedia.org/wiki/Complex_number>\n\n   Parameters:\n\n   x - _optional_ A Complex number real part.\n   y - _optional_ A Complex number imaginary part.\n \n*/\n\nvar Complex=function Complex(x,y){\nthis.x=x||0;\nthis.y=y||0;\n};\n\n$jit.Complex=Complex;\n\nComplex.prototype={\n/*\n       Method: getc\n    \n       Returns a complex number.\n    \n       Returns:\n    \n          A complex number.\n    */\ngetc:function getc(){\nreturn this;\n},\n\n/*\n       Method: getp\n    \n       Returns a <Polar> representation of this number.\n    \n       Parameters:\n\n       simple - _optional_ If *true*, this method will return only an object holding theta and rho properties and not a <Polar> instance. Default's *false*.\n\n       Returns:\n    \n          A variable in <Polar> coordinates.\n    */\ngetp:function getp(simple){\nreturn this.toPolar(simple);\n},\n\n\n/*\n       Method: set\n    \n       Sets a number.\n\n       Parameters:\n\n       c - A <Complex> or <Polar> instance.\n    \n    */\nset:function set(c){\nc=c.getc(true);\nthis.x=c.x;\nthis.y=c.y;\n},\n\n/*\n       Method: setc\n    \n       Sets a complex number.\n\n       Parameters:\n\n       x - A <Complex> number Real part.\n       y - A <Complex> number Imaginary part.\n    \n    */\nsetc:function setc(x,y){\nthis.x=x;\nthis.y=y;\n},\n\n/*\n       Method: setp\n    \n       Sets a polar number.\n\n       Parameters:\n\n       theta - A <Polar> number theta property.\n       rho - A <Polar> number rho property.\n    \n    */\nsetp:function setp(theta,rho){\nthis.x=Math.cos(theta)*rho;\nthis.y=Math.sin(theta)*rho;\n},\n\n/*\n       Method: clone\n    \n       Returns a copy of the current object.\n    \n       Returns:\n    \n          A copy of the real object.\n    */\nclone:function clone(){\nreturn new Complex(this.x,this.y);\n},\n\n/*\n       Method: toPolar\n    \n       Transforms cartesian to polar coordinates.\n    \n       Parameters:\n\n       simple - _optional_ If *true* this method will only return an object with theta and rho properties (and not the whole <Polar> instance). Default's *false*.\n       \n       Returns:\n    \n          A new <Polar> instance.\n    */\n\ntoPolar:function toPolar(simple){\nvar rho=this.norm();\nvar atan=Math.atan2(this.y,this.x);\nif(atan<0)atan+=Math.PI*2;\nif(simple)return{'theta':atan,'rho':rho};\nreturn new Polar(atan,rho);\n},\n/*\n       Method: norm\n    \n       Calculates a <Complex> number norm.\n    \n       Returns:\n    \n          A real number representing the complex norm.\n    */\nnorm:function norm(){\nreturn Math.sqrt(this.squaredNorm());\n},\n\n/*\n       Method: squaredNorm\n    \n       Calculates a <Complex> number squared norm.\n    \n       Returns:\n    \n          A real number representing the complex squared norm.\n    */\nsquaredNorm:function squaredNorm(){\nreturn this.x*this.x+this.y*this.y;\n},\n\n/*\n       Method: add\n    \n       Returns the result of adding two complex numbers.\n       \n       Does not alter the original object.\n\n       Parameters:\n    \n          pos - A <Complex> instance.\n    \n       Returns:\n    \n         The result of adding two complex numbers.\n    */\nadd:function add(pos){\nreturn new Complex(this.x+pos.x,this.y+pos.y);\n},\n\n/*\n       Method: prod\n    \n       Returns the result of multiplying two <Complex> numbers.\n       \n       Does not alter the original object.\n\n       Parameters:\n    \n          pos - A <Complex> instance.\n    \n       Returns:\n    \n         The result of multiplying two complex numbers.\n    */\nprod:function prod(pos){\nreturn new Complex(this.x*pos.x-this.y*pos.y,this.y*pos.x+this.x*pos.y);\n},\n\n/*\n       Method: conjugate\n    \n       Returns the conjugate of this <Complex> number.\n\n       Does not alter the original object.\n\n       Returns:\n    \n         The conjugate of this <Complex> number.\n    */\nconjugate:function conjugate(){\nreturn new Complex(this.x,-this.y);\n},\n\n\n/*\n       Method: scale\n    \n       Returns the result of scaling a <Complex> instance.\n       \n       Does not alter the original object.\n\n       Parameters:\n    \n          factor - A scale factor.\n    \n       Returns:\n    \n         The result of scaling this complex to a factor.\n    */\nscale:function scale(factor){\nreturn new Complex(this.x*factor,this.y*factor);\n},\n\n/*\n       Method: equals\n    \n       Comparison method.\n\n       Returns *true* if both real and imaginary parts are equal.\n\n       Parameters:\n\n       c - A <Complex> instance.\n\n       Returns:\n\n       A boolean instance indicating if both <Complex> numbers are equal.\n    */\nequals:function equals(c){\nreturn this.x==c.x&&this.y==c.y;\n},\n\n/*\n       Method: $add\n    \n       Returns the result of adding two <Complex> numbers.\n       \n       Alters the original object.\n\n       Parameters:\n    \n          pos - A <Complex> instance.\n    \n       Returns:\n    \n         The result of adding two complex numbers.\n    */\n$add:function $add(pos){\nthis.x+=pos.x;this.y+=pos.y;\nreturn this;\n},\n\n/*\n       Method: $prod\n    \n       Returns the result of multiplying two <Complex> numbers.\n       \n       Alters the original object.\n\n       Parameters:\n    \n          pos - A <Complex> instance.\n    \n       Returns:\n    \n         The result of multiplying two complex numbers.\n    */\n$prod:function $prod(pos){\nvar x=this.x,y=this.y;\nthis.x=x*pos.x-y*pos.y;\nthis.y=y*pos.x+x*pos.y;\nreturn this;\n},\n\n/*\n       Method: $conjugate\n    \n       Returns the conjugate for this <Complex>.\n       \n       Alters the original object.\n\n       Returns:\n    \n         The conjugate for this complex.\n    */\n$conjugate:function $conjugate(){\nthis.y=-this.y;\nreturn this;\n},\n\n/*\n       Method: $scale\n    \n       Returns the result of scaling a <Complex> instance.\n       \n       Alters the original object.\n\n       Parameters:\n    \n          factor - A scale factor.\n    \n       Returns:\n    \n         The result of scaling this complex to a factor.\n    */\n$scale:function $scale(factor){\nthis.x*=factor;this.y*=factor;\nreturn this;\n},\n\n/*\n       Method: $div\n    \n       Returns the division of two <Complex> numbers.\n       \n       Alters the original object.\n\n       Parameters:\n    \n          pos - A <Complex> number.\n    \n       Returns:\n    \n         The result of scaling this complex to a factor.\n    */\n$div:function $div(pos){\nvar x=this.x,y=this.y;\nvar sq=pos.squaredNorm();\nthis.x=x*pos.x+y*pos.y;this.y=y*pos.x-x*pos.y;\nreturn this.$scale(1/sq);\n},\n\n/*\n      Method: isZero\n   \n      Returns *true* if the number is zero.\n   \n   */\nisZero:function isZero(){\nvar almostZero=0.0001,abs=Math.abs;\nreturn abs(this.x)<almostZero&&abs(this.y)<almostZero;\n}};\n\n\nvar $C=function $C(a,b){return new Complex(a,b);};\n\nComplex.KER=$C(0,0);\n\n\n\n/*\n * File: Graph.js\n *\n*/\n\n/*\n Class: Graph\n\n A Graph Class that provides useful manipulation functions. You can find more manipulation methods in the <Graph.Util> object.\n\n An instance of this class can be accessed by using the *graph* parameter of any tree or graph visualization.\n \n Example:\n\n (start code js)\n   //create new visualization\n   var viz = new $jit.Viz(options);\n   //load JSON data\n   viz.loadJSON(json);\n   //access model\n   viz.graph; //<Graph> instance\n (end code)\n \n Implements:\n \n The following <Graph.Util> methods are implemented in <Graph>\n \n  - <Graph.Util.getNode>\n  - <Graph.Util.eachNode>\n  - <Graph.Util.computeLevels>\n  - <Graph.Util.eachBFS>\n  - <Graph.Util.clean>\n  - <Graph.Util.getClosestNodeToPos>\n  - <Graph.Util.getClosestNodeToOrigin>\n \n*/\n\n$jit.Graph=new Class({\n\ninitialize:function initialize(opt,Node,Edge,Label){\nvar innerOptions={\n'klass':Complex,\n'Node':{}};\n\nthis.Node=Node;\nthis.Edge=Edge;\nthis.Label=Label;\nthis.opt=$.merge(innerOptions,opt||{});\nthis.nodes={};\nthis.edges={};\n\n//add nodeList methods\nvar that=this;\nthis.nodeList={};\nfor(var p in Accessors){\nthat.nodeList[p]=function(p){\nreturn function(){\nvar args=Array.prototype.slice.call(arguments);\nthat.eachNode(function(n){\nn[p].apply(n,args);\n});\n};\n}(p);\n}\n\n},\n\n/*\n     Method: getNode\n    \n     Returns a <Graph.Node> by *id*.\n\n     Parameters:\n\n     id - (string) A <Graph.Node> id.\n\n     Example:\n\n     (start code js)\n       var node = graph.getNode('nodeId');\n     (end code)\n*/\ngetNode:function getNode(id){\nif(this.hasNode(id))return this.nodes[id];\nreturn false;\n},\n\n/*\n     Method: get\n    \n     An alias for <Graph.Util.getNode>. Returns a node by *id*.\n    \n     Parameters:\n    \n     id - (string) A <Graph.Node> id.\n    \n     Example:\n    \n     (start code js)\n       var node = graph.get('nodeId');\n     (end code)\n*/\nget:function get(id){\nreturn this.getNode(id);\n},\n\n/*\n   Method: getByName\n  \n   Returns a <Graph.Node> by *name*.\n  \n   Parameters:\n  \n   name - (string) A <Graph.Node> name.\n  \n   Example:\n  \n   (start code js)\n     var node = graph.getByName('someName');\n   (end code)\n  */\ngetByName:function getByName(name){\nfor(var id in this.nodes){\nvar n=this.nodes[id];\nif(n.name==name)return n;\n}\nreturn false;\n},\n\n/*\n   Method: getAdjacence\n  \n   Returns a <Graph.Adjacence> object connecting nodes with ids *id* and *id2*.\n\n   Parameters:\n\n   id - (string) A <Graph.Node> id.\n   id2 - (string) A <Graph.Node> id.\n*/\ngetAdjacence:function getAdjacence(id,id2){\nif(id in this.edges){\nreturn this.edges[id][id2];\n}\nreturn false;\n},\n\n/*\n     Method: addNode\n    \n     Adds a node.\n     \n     Parameters:\n    \n      obj - An object with the properties described below\n\n      id - (string) A node id\n      name - (string) A node's name\n      data - (object) A node's data hash\n\n    See also:\n    <Graph.Node>\n\n  */\naddNode:function addNode(obj){\nif(!this.nodes[obj.id]){\nvar edges=this.edges[obj.id]={};\nthis.nodes[obj.id]=new Graph.Node($.extend({\n'id':obj.id,\n'name':obj.name,\n'data':$.merge(obj.data||{},{}),\n'adjacencies':edges},\nthis.opt.Node),\nthis.opt.klass,\nthis.Node,\nthis.Edge,\nthis.Label);\n}\nreturn this.nodes[obj.id];\n},\n\n/*\n     Method: addAdjacence\n    \n     Connects nodes specified by *obj* and *obj2*. If not found, nodes are created.\n     \n     Parameters:\n    \n      obj - (object) A <Graph.Node> object.\n      obj2 - (object) Another <Graph.Node> object.\n      data - (object) A data object. Used to store some extra information in the <Graph.Adjacence> object created.\n\n    See also:\n\n    <Graph.Node>, <Graph.Adjacence>\n    */\naddAdjacence:function addAdjacence(obj,obj2,data){\nif(!this.hasNode(obj.id)){this.addNode(obj);}\nif(!this.hasNode(obj2.id)){this.addNode(obj2);}\nobj=this.nodes[obj.id];obj2=this.nodes[obj2.id];\nif(!obj.adjacentTo(obj2)){\nvar adjsObj=this.edges[obj.id]=this.edges[obj.id]||{};\nvar adjsObj2=this.edges[obj2.id]=this.edges[obj2.id]||{};\nadjsObj[obj2.id]=adjsObj2[obj.id]=new Graph.Adjacence(obj,obj2,data,this.Edge,this.Label);\nreturn adjsObj[obj2.id];\n}\nreturn this.edges[obj.id][obj2.id];\n},\n\n/*\n     Method: removeNode\n    \n     Removes a <Graph.Node> matching the specified *id*.\n\n     Parameters:\n\n     id - (string) A node's id.\n\n    */\nremoveNode:function removeNode(id){\nif(this.hasNode(id)){\ndelete this.nodes[id];\nvar adjs=this.edges[id];\nfor(var to in adjs){\ndelete this.edges[to][id];\n}\ndelete this.edges[id];\n}\n},\n\n/*\n     Method: removeAdjacence\n    \n     Removes a <Graph.Adjacence> matching *id1* and *id2*.\n\n     Parameters:\n\n     id1 - (string) A <Graph.Node> id.\n     id2 - (string) A <Graph.Node> id.\n*/\nremoveAdjacence:function removeAdjacence(id1,id2){\ndelete this.edges[id1][id2];\ndelete this.edges[id2][id1];\n},\n\n/*\n     Method: hasNode\n    \n     Returns a boolean indicating if the node belongs to the <Graph> or not.\n     \n     Parameters:\n    \n        id - (string) Node id.\n   */\nhasNode:function hasNode(id){\nreturn id in this.nodes;\n},\n\n/*\n    Method: empty\n\n    Empties the Graph\n\n  */\nempty:function empty(){this.nodes={};this.edges={};}});\n\n\n\nvar Graph=$jit.Graph;\n\n/*\n Object: Accessors\n \n Defines a set of methods for data, canvas and label styles manipulation implemented by <Graph.Node> and <Graph.Adjacence> instances.\n \n */\nvar Accessors;\n\n(function(){\nvar getDataInternal=function getDataInternal(prefix,prop,type,force,prefixConfig){\nvar data;\ntype=type||'current';\nprefix=\"$\"+(prefix?prefix+\"-\":\"\");\n\nif(type=='current'){\ndata=this.data;\n}else if(type=='start'){\ndata=this.startData;\n}else if(type=='end'){\ndata=this.endData;\n}\n\nvar dollar=prefix+prop;\n\nif(force){\nreturn data[dollar];\n}\n\nif(!this.Config.overridable)\nreturn prefixConfig[prop]||0;\n\nreturn dollar in data?\ndata[dollar]:dollar in this.data?this.data[dollar]:prefixConfig[prop]||0;\n};\n\nvar setDataInternal=function setDataInternal(prefix,prop,value,type){\ntype=type||'current';\nprefix='$'+(prefix?prefix+'-':'');\n\nvar data;\n\nif(type=='current'){\ndata=this.data;\n}else if(type=='start'){\ndata=this.startData;\n}else if(type=='end'){\ndata=this.endData;\n}\n\ndata[prefix+prop]=value;\n};\n\nvar removeDataInternal=function removeDataInternal(prefix,properties){\nprefix='$'+(prefix?prefix+'-':'');\nvar that=this;\n$.each(properties,function(prop){\nvar pref=prefix+prop;\ndelete that.data[pref];\ndelete that.endData[pref];\ndelete that.startData[pref];\n});\n};\n\nAccessors={\n/*\n    Method: getData\n\n    Returns the specified data value property.\n    This is useful for querying special/reserved <Graph.Node> data properties\n    (i.e dollar prefixed properties).\n\n    Parameters:\n\n      prop  - (string) The name of the property. The dollar sign is not needed. For\n              example *getData(width)* will return *data.$width*.\n      type  - (string) The type of the data property queried. Default's \"current\". You can access *start* and *end* \n              data properties also. These properties are used when making animations.\n      force - (boolean) Whether to obtain the true value of the property (equivalent to\n              *data.$prop*) or to check for *node.overridable = true* first.\n\n    Returns:\n\n      The value of the dollar prefixed property or the global Node/Edge property\n      value if *overridable=false*\n\n    Example:\n    (start code js)\n     node.getData('width'); //will return node.data.$width if Node.overridable=true;\n    (end code)\n    */\ngetData:function getData(prop,type,force){\nreturn getDataInternal.call(this,\"\",prop,type,force,this.Config);\n},\n\n\n/*\n    Method: setData\n\n    Sets the current data property with some specific value.\n    This method is only useful for reserved (dollar prefixed) properties.\n\n    Parameters:\n\n      prop  - (string) The name of the property. The dollar sign is not necessary. For\n              example *setData(width)* will set *data.$width*.\n      value - (mixed) The value to store.\n      type  - (string) The type of the data property to store. Default's \"current\" but\n              can also be \"start\" or \"end\".\n\n    Example:\n    \n    (start code js)\n     node.setData('width', 30);\n    (end code)\n    \n    If we were to make an animation of a node/edge width then we could do\n    \n    (start code js)\n      var node = viz.getNode('nodeId');\n      //set start and end values\n      node.setData('width', 10, 'start');\n      node.setData('width', 30, 'end');\n      //will animate nodes width property\n      viz.fx.animate({\n        modes: ['node-property:width'],\n        duration: 1000\n      });\n    (end code)\n    */\nsetData:function setData(prop,value,type){\nsetDataInternal.call(this,\"\",prop,value,type);\n},\n\n/*\n    Method: setDataset\n\n    Convenience method to set multiple data values at once.\n    \n    Parameters:\n    \n    types - (array|string) A set of 'current', 'end' or 'start' values.\n    obj - (object) A hash containing the names and values of the properties to be altered.\n\n    Example:\n    (start code js)\n      node.setDataset(['current', 'end'], {\n        'width': [100, 5],\n        'color': ['#fff', '#ccc']\n      });\n      //...or also\n      node.setDataset('end', {\n        'width': 5,\n        'color': '#ccc'\n      });\n    (end code)\n    \n    See also: \n    \n    <Accessors.setData>\n    \n    */\nsetDataset:function setDataset(types,obj){\ntypes=$.splat(types);\nfor(var attr in obj){\nfor(var i=0,val=$.splat(obj[attr]),l=types.length;i<l;i++){\nthis.setData(attr,val[i],types[i]);\n}\n}\n},\n\n/*\n    Method: removeData\n\n    Remove data properties.\n\n    Parameters:\n\n    One or more property names as arguments. The dollar sign is not needed.\n\n    Example:\n    (start code js)\n    node.removeData('width'); //now the default width value is returned\n    (end code)\n    */\nremoveData:function removeData(){\nremoveDataInternal.call(this,\"\",Array.prototype.slice.call(arguments));\n},\n\n/*\n    Method: getCanvasStyle\n\n    Returns the specified canvas style data value property. This is useful for\n    querying special/reserved <Graph.Node> canvas style data properties (i.e.\n    dollar prefixed properties that match with $canvas-<name of canvas style>).\n\n    Parameters:\n\n      prop  - (string) The name of the property. The dollar sign is not needed. For\n              example *getCanvasStyle(shadowBlur)* will return *data[$canvas-shadowBlur]*.\n      type  - (string) The type of the data property queried. Default's *current*. You can access *start* and *end* \n              data properties also.\n              \n    Example:\n    (start code js)\n      node.getCanvasStyle('shadowBlur');\n    (end code)\n    \n    See also:\n    \n    <Accessors.getData>\n    */\ngetCanvasStyle:function getCanvasStyle(prop,type,force){\nreturn getDataInternal.call(\nthis,'canvas',prop,type,force,this.Config.CanvasStyles);\n},\n\n/*\n    Method: setCanvasStyle\n\n    Sets the canvas style data property with some specific value.\n    This method is only useful for reserved (dollar prefixed) properties.\n    \n    Parameters:\n    \n    prop - (string) Name of the property. Can be any canvas property like 'shadowBlur', 'shadowColor', 'strokeStyle', etc.\n    value - (mixed) The value to set to the property.\n    type - (string) Default's *current*. Whether to set *start*, *current* or *end* type properties.\n    \n    Example:\n    \n    (start code js)\n     node.setCanvasStyle('shadowBlur', 30);\n    (end code)\n    \n    If we were to make an animation of a node/edge shadowBlur canvas style then we could do\n    \n    (start code js)\n      var node = viz.getNode('nodeId');\n      //set start and end values\n      node.setCanvasStyle('shadowBlur', 10, 'start');\n      node.setCanvasStyle('shadowBlur', 30, 'end');\n      //will animate nodes canvas style property for nodes\n      viz.fx.animate({\n        modes: ['node-style:shadowBlur'],\n        duration: 1000\n      });\n    (end code)\n    \n    See also:\n    \n    <Accessors.setData>.\n    */\nsetCanvasStyle:function setCanvasStyle(prop,value,type){\nsetDataInternal.call(this,'canvas',prop,value,type);\n},\n\n/*\n    Method: setCanvasStyles\n\n    Convenience method to set multiple styles at once.\n\n    Parameters:\n    \n    types - (array|string) A set of 'current', 'end' or 'start' values.\n    obj - (object) A hash containing the names and values of the properties to be altered.\n\n    See also:\n    \n    <Accessors.setDataset>.\n    */\nsetCanvasStyles:function setCanvasStyles(types,obj){\ntypes=$.splat(types);\nfor(var attr in obj){\nfor(var i=0,val=$.splat(obj[attr]),l=types.length;i<l;i++){\nthis.setCanvasStyle(attr,val[i],types[i]);\n}\n}\n},\n\n/*\n    Method: removeCanvasStyle\n\n    Remove canvas style properties from data.\n\n    Parameters:\n    \n    A variable number of canvas style strings.\n\n    See also:\n    \n    <Accessors.removeData>.\n    */\nremoveCanvasStyle:function removeCanvasStyle(){\nremoveDataInternal.call(this,'canvas',Array.prototype.slice.call(arguments));\n},\n\n/*\n    Method: getLabelData\n\n    Returns the specified label data value property. This is useful for\n    querying special/reserved <Graph.Node> label options (i.e.\n    dollar prefixed properties that match with $label-<name of label style>).\n\n    Parameters:\n\n      prop  - (string) The name of the property. The dollar sign prefix is not needed. For\n              example *getLabelData(size)* will return *data[$label-size]*.\n      type  - (string) The type of the data property queried. Default's *current*. You can access *start* and *end* \n              data properties also.\n              \n    See also:\n    \n    <Accessors.getData>.\n    */\ngetLabelData:function getLabelData(prop,type,force){\nreturn getDataInternal.call(\nthis,'label',prop,type,force,this.Label);\n},\n\n/*\n    Method: setLabelData\n\n    Sets the current label data with some specific value.\n    This method is only useful for reserved (dollar prefixed) properties.\n\n    Parameters:\n    \n    prop - (string) Name of the property. Can be any canvas property like 'shadowBlur', 'shadowColor', 'strokeStyle', etc.\n    value - (mixed) The value to set to the property.\n    type - (string) Default's *current*. Whether to set *start*, *current* or *end* type properties.\n    \n    Example:\n    \n    (start code js)\n     node.setLabelData('size', 30);\n    (end code)\n    \n    If we were to make an animation of a node label size then we could do\n    \n    (start code js)\n      var node = viz.getNode('nodeId');\n      //set start and end values\n      node.setLabelData('size', 10, 'start');\n      node.setLabelData('size', 30, 'end');\n      //will animate nodes label size\n      viz.fx.animate({\n        modes: ['label-property:size'],\n        duration: 1000\n      });\n    (end code)\n    \n    See also:\n    \n    <Accessors.setData>.\n    */\nsetLabelData:function setLabelData(prop,value,type){\nsetDataInternal.call(this,'label',prop,value,type);\n},\n\n/*\n    Method: setLabelDataset\n\n    Convenience function to set multiple label data at once.\n\n    Parameters:\n    \n    types - (array|string) A set of 'current', 'end' or 'start' values.\n    obj - (object) A hash containing the names and values of the properties to be altered.\n\n    See also:\n    \n    <Accessors.setDataset>.\n    */\nsetLabelDataset:function setLabelDataset(types,obj){\ntypes=$.splat(types);\nfor(var attr in obj){\nfor(var i=0,val=$.splat(obj[attr]),l=types.length;i<l;i++){\nthis.setLabelData(attr,val[i],types[i]);\n}\n}\n},\n\n/*\n    Method: removeLabelData\n\n    Remove label properties from data.\n    \n    Parameters:\n    \n    A variable number of label property strings.\n\n    See also:\n    \n    <Accessors.removeData>.\n    */\nremoveLabelData:function removeLabelData(){\nremoveDataInternal.call(this,'label',Array.prototype.slice.call(arguments));\n}};\n\n})();\n\n/*\n     Class: Graph.Node\n\n     A <Graph> node.\n     \n     Implements:\n     \n     <Accessors> methods.\n     \n     The following <Graph.Util> methods are implemented by <Graph.Node>\n     \n    - <Graph.Util.eachAdjacency>\n    - <Graph.Util.eachLevel>\n    - <Graph.Util.eachSubgraph>\n    - <Graph.Util.eachSubnode>\n    - <Graph.Util.anySubnode>\n    - <Graph.Util.getSubnodes>\n    - <Graph.Util.getParents>\n    - <Graph.Util.isDescendantOf>     \n*/\nGraph.Node=new Class({\n\ninitialize:function initialize(opt,klass,Node,Edge,Label){\nvar innerOptions={\n'id':'',\n'name':'',\n'data':{},\n'startData':{},\n'endData':{},\n'adjacencies':{},\n\n'selected':false,\n'drawn':false,\n'exist':false,\n\n'angleSpan':{\n'begin':0,\n'end':0},\n\n\n'pos':new klass(),\n'startPos':new klass(),\n'endPos':new klass()};\n\n\n$.extend(this,$.extend(innerOptions,opt));\nthis.Config=this.Node=Node;\nthis.Edge=Edge;\nthis.Label=Label;\n},\n\n/*\n       Method: adjacentTo\n    \n       Indicates if the node is adjacent to the node specified by id\n\n       Parameters:\n    \n          id - (string) A node id.\n    \n       Example:\n       (start code js)\n        node.adjacentTo('nodeId') == true;\n       (end code)\n    */\nadjacentTo:function adjacentTo(node){\nreturn node.id in this.adjacencies;\n},\n\n/*\n       Method: getAdjacency\n    \n       Returns a <Graph.Adjacence> object connecting the current <Graph.Node> and the node having *id* as id.\n\n       Parameters:\n    \n          id - (string) A node id.\n    */\ngetAdjacency:function getAdjacency(id){\nreturn this.adjacencies[id];\n},\n\n/*\n      Method: getPos\n   \n      Returns the position of the node.\n  \n      Parameters:\n   \n         type - (string) Default's *current*. Possible values are \"start\", \"end\" or \"current\".\n   \n      Returns:\n   \n        A <Complex> or <Polar> instance.\n  \n      Example:\n      (start code js)\n       var pos = node.getPos('end');\n      (end code)\n   */\ngetPos:function getPos(type){\ntype=type||\"current\";\nif(type==\"current\"){\nreturn this.pos;\n}else if(type==\"end\"){\nreturn this.endPos;\n}else if(type==\"start\"){\nreturn this.startPos;\n}\n},\n/*\n     Method: setPos\n  \n     Sets the node's position.\n  \n     Parameters:\n  \n        value - (object) A <Complex> or <Polar> instance.\n        type - (string) Default's *current*. Possible values are \"start\", \"end\" or \"current\".\n  \n     Example:\n     (start code js)\n      node.setPos(new $jit.Complex(0, 0), 'end');\n     (end code)\n  */\nsetPos:function setPos(value,type){\ntype=type||\"current\";\nvar pos;\nif(type==\"current\"){\npos=this.pos;\n}else if(type==\"end\"){\npos=this.endPos;\n}else if(type==\"start\"){\npos=this.startPos;\n}\npos.set(value);\n}});\n\n\nGraph.Node.implement(Accessors);\n\n/*\n     Class: Graph.Adjacence\n\n     A <Graph> adjacence (or edge) connecting two <Graph.Nodes>.\n     \n     Implements:\n     \n     <Accessors> methods.\n\n     See also:\n\n     <Graph>, <Graph.Node>\n\n     Properties:\n     \n      nodeFrom - A <Graph.Node> connected by this edge.\n      nodeTo - Another  <Graph.Node> connected by this edge.\n      data - Node data property containing a hash (i.e {}) with custom options.\n*/\nGraph.Adjacence=new Class({\n\ninitialize:function initialize(nodeFrom,nodeTo,data,Edge,Label){\nthis.nodeFrom=nodeFrom;\nthis.nodeTo=nodeTo;\nthis.data=data||{};\nthis.startData={};\nthis.endData={};\nthis.Config=this.Edge=Edge;\nthis.Label=Label;\n}});\n\n\nGraph.Adjacence.implement(Accessors);\n\n/*\n   Object: Graph.Util\n\n   <Graph> traversal and processing utility object.\n   \n   Note:\n   \n   For your convenience some of these methods have also been appended to <Graph> and <Graph.Node> classes.\n*/\nGraph.Util={\n/*\n       filter\n    \n       For internal use only. Provides a filtering function based on flags.\n    */\nfilter:function filter(param){\nif(!param||!($.type(param)=='string'))return function(){return true;};\nvar props=param.split(\" \");\nreturn function(elem){\nfor(var i=0;i<props.length;i++){\nif(elem[props[i]]){\nreturn false;\n}\n}\nreturn true;\n};\n},\n/*\n       Method: getNode\n    \n       Returns a <Graph.Node> by *id*.\n       \n       Also implemented by:\n       \n       <Graph>\n\n       Parameters:\n\n       graph - (object) A <Graph> instance.\n       id - (string) A <Graph.Node> id.\n\n       Example:\n\n       (start code js)\n         $jit.Graph.Util.getNode(graph, 'nodeid');\n         //or...\n         graph.getNode('nodeid');\n       (end code)\n    */\ngetNode:function getNode(graph,id){\nreturn graph.nodes[id];\n},\n\n/*\n       Method: eachNode\n    \n       Iterates over <Graph> nodes performing an *action*.\n       \n       Also implemented by:\n       \n       <Graph>.\n\n       Parameters:\n\n       graph - (object) A <Graph> instance.\n       action - (function) A callback function having a <Graph.Node> as first formal parameter.\n\n       Example:\n       (start code js)\n         $jit.Graph.Util.eachNode(graph, function(node) {\n          alert(node.name);\n         });\n         //or...\n         graph.eachNode(function(node) {\n           alert(node.name);\n         });\n       (end code)\n    */\neachNode:function eachNode(graph,action,flags){\nvar filter=this.filter(flags);\nfor(var i in graph.nodes){\nif(filter(graph.nodes[i]))action(graph.nodes[i]);\n}\n},\n\n/*\n      Method: each\n   \n      Iterates over <Graph> nodes performing an *action*. It's an alias for <Graph.Util.eachNode>.\n      \n      Also implemented by:\n      \n      <Graph>.\n  \n      Parameters:\n  \n      graph - (object) A <Graph> instance.\n      action - (function) A callback function having a <Graph.Node> as first formal parameter.\n  \n      Example:\n      (start code js)\n        $jit.Graph.Util.each(graph, function(node) {\n         alert(node.name);\n        });\n        //or...\n        graph.each(function(node) {\n          alert(node.name);\n        });\n      (end code)\n   */\neach:function each(graph,action,flags){\nthis.eachNode(graph,action,flags);\n},\n\n/*\n       Method: eachAdjacency\n    \n       Iterates over <Graph.Node> adjacencies applying the *action* function.\n       \n       Also implemented by:\n       \n       <Graph.Node>.\n\n       Parameters:\n\n       node - (object) A <Graph.Node>.\n       action - (function) A callback function having <Graph.Adjacence> as first formal parameter.\n\n       Example:\n       (start code js)\n         $jit.Graph.Util.eachAdjacency(node, function(adj) {\n          alert(adj.nodeTo.name);\n         });\n         //or...\n         node.eachAdjacency(function(adj) {\n           alert(adj.nodeTo.name);\n         });\n       (end code)\n    */\neachAdjacency:function eachAdjacency(node,action,flags){\nvar adj=node.adjacencies,filter=this.filter(flags);\nfor(var id in adj){\nvar a=adj[id];\nif(filter(a)){\nif(a.nodeFrom!=node){\nvar tmp=a.nodeFrom;\na.nodeFrom=a.nodeTo;\na.nodeTo=tmp;\n}\naction(a,id);\n}\n}\n},\n\n/*\n       Method: computeLevels\n    \n       Performs a BFS traversal setting the correct depth for each node.\n        \n       Also implemented by:\n       \n       <Graph>.\n       \n       Note:\n       \n       The depth of each node can then be accessed by \n       >node._depth\n\n       Parameters:\n\n       graph - (object) A <Graph>.\n       id - (string) A starting node id for the BFS traversal.\n       startDepth - (optional|number) A minimum depth value. Default's 0.\n\n    */\ncomputeLevels:function computeLevels(graph,id,startDepth,flags){\nstartDepth=startDepth||0;\nvar filter=this.filter(flags);\nthis.eachNode(graph,function(elem){\nelem._flag=false;\nelem._depth=-1;\n},flags);\nvar root=graph.getNode(id);\nroot._depth=startDepth;\nvar queue=[root];\nwhile(queue.length!=0){\nvar node=queue.pop();\nnode._flag=true;\nthis.eachAdjacency(node,function(adj){\nvar n=adj.nodeTo;\nif(n._flag==false&&filter(n)){\nif(n._depth<0)n._depth=node._depth+1+startDepth;\nqueue.unshift(n);\n}\n},flags);\n}\n},\n\n/*\n       Method: eachBFS\n    \n       Performs a BFS traversal applying *action* to each <Graph.Node>.\n       \n       Also implemented by:\n       \n       <Graph>.\n\n       Parameters:\n\n       graph - (object) A <Graph>.\n       id - (string) A starting node id for the BFS traversal.\n       action - (function) A callback function having a <Graph.Node> as first formal parameter.\n\n       Example:\n       (start code js)\n         $jit.Graph.Util.eachBFS(graph, 'mynodeid', function(node) {\n          alert(node.name);\n         });\n         //or...\n         graph.eachBFS('mynodeid', function(node) {\n           alert(node.name);\n         });\n       (end code)\n    */\neachBFS:function eachBFS(graph,id,action,flags){\nvar filter=this.filter(flags);\nthis.clean(graph);\nvar queue=[graph.getNode(id)];\nwhile(queue.length!=0){\nvar node=queue.pop();\nnode._flag=true;\naction(node,node._depth);\nthis.eachAdjacency(node,function(adj){\nvar n=adj.nodeTo;\nif(n._flag==false&&filter(n)){\nn._flag=true;\nqueue.unshift(n);\n}\n},flags);\n}\n},\n\n/*\n       Method: eachLevel\n    \n       Iterates over a node's subgraph applying *action* to the nodes of relative depth between *levelBegin* and *levelEnd*.\n       \n       Also implemented by:\n       \n       <Graph.Node>.\n\n       Parameters:\n       \n       node - (object) A <Graph.Node>.\n       levelBegin - (number) A relative level value.\n       levelEnd - (number) A relative level value.\n       action - (function) A callback function having a <Graph.Node> as first formal parameter.\n\n    */\neachLevel:function eachLevel(node,levelBegin,levelEnd,action,flags){\nvar d=node._depth,filter=this.filter(flags),that=this;\nlevelEnd=levelEnd===false?Number.MAX_VALUE-d:levelEnd;\n(function loopLevel(node,levelBegin,levelEnd){\nvar d=node._depth;\nif(d>=levelBegin&&d<=levelEnd&&filter(node))action(node,d);\nif(d<levelEnd){\nthat.eachAdjacency(node,function(adj){\nvar n=adj.nodeTo;\nif(n._depth>d)loopLevel(n,levelBegin,levelEnd);\n});\n}\n})(node,levelBegin+d,levelEnd+d);\n},\n\n/*\n       Method: eachSubgraph\n    \n       Iterates over a node's children recursively.\n       \n       Also implemented by:\n       \n       <Graph.Node>.\n\n       Parameters:\n       node - (object) A <Graph.Node>.\n       action - (function) A callback function having a <Graph.Node> as first formal parameter.\n\n       Example:\n       (start code js)\n         $jit.Graph.Util.eachSubgraph(node, function(node) {\n           alert(node.name);\n         });\n         //or...\n         node.eachSubgraph(function(node) {\n           alert(node.name);\n         });\n       (end code)\n    */\neachSubgraph:function eachSubgraph(node,action,flags){\nthis.eachLevel(node,0,false,action,flags);\n},\n\n/*\n       Method: eachSubnode\n    \n       Iterates over a node's children (without deeper recursion).\n       \n       Also implemented by:\n       \n       <Graph.Node>.\n       \n       Parameters:\n       node - (object) A <Graph.Node>.\n       action - (function) A callback function having a <Graph.Node> as first formal parameter.\n\n       Example:\n       (start code js)\n         $jit.Graph.Util.eachSubnode(node, function(node) {\n          alert(node.name);\n         });\n         //or...\n         node.eachSubnode(function(node) {\n           alert(node.name);\n         });\n       (end code)\n    */\neachSubnode:function eachSubnode(node,action,flags){\nthis.eachLevel(node,1,1,action,flags);\n},\n\n/*\n       Method: anySubnode\n    \n       Returns *true* if any subnode matches the given condition.\n       \n       Also implemented by:\n       \n       <Graph.Node>.\n\n       Parameters:\n       node - (object) A <Graph.Node>.\n       cond - (function) A callback function returning a Boolean instance. This function has as first formal parameter a <Graph.Node>.\n\n       Example:\n       (start code js)\n         $jit.Graph.Util.anySubnode(node, function(node) { return node.name == \"mynodename\"; });\n         //or...\n         node.anySubnode(function(node) { return node.name == 'mynodename'; });\n       (end code)\n    */\nanySubnode:function anySubnode(node,cond,flags){\nvar flag=false;\ncond=cond||$.lambda(true);\nvar c=$.type(cond)=='string'?function(n){return n[cond];}:cond;\nthis.eachSubnode(node,function(elem){\nif(c(elem))flag=true;\n},flags);\nreturn flag;\n},\n\n/*\n       Method: getSubnodes\n    \n       Collects all subnodes for a specified node. \n       The *level* parameter filters nodes having relative depth of *level* from the root node. \n       \n       Also implemented by:\n       \n       <Graph.Node>.\n\n       Parameters:\n       node - (object) A <Graph.Node>.\n       level - (optional|number) Default's *0*. A starting relative depth for collecting nodes.\n\n       Returns:\n       An array of nodes.\n\n    */\ngetSubnodes:function getSubnodes(node,level,flags){\nvar ans=[],that=this;\nlevel=level||0;\nvar levelStart,levelEnd;\nif($.type(level)=='array'){\nlevelStart=level[0];\nlevelEnd=level[1];\n}else{\nlevelStart=level;\nlevelEnd=Number.MAX_VALUE-node._depth;\n}\nthis.eachLevel(node,levelStart,levelEnd,function(n){\nans.push(n);\n},flags);\nreturn ans;\n},\n\n\n/*\n       Method: getParents\n    \n       Returns an Array of <Graph.Nodes> which are parents of the given node.\n       \n       Also implemented by:\n       \n       <Graph.Node>.\n\n       Parameters:\n       node - (object) A <Graph.Node>.\n\n       Returns:\n       An Array of <Graph.Nodes>.\n\n       Example:\n       (start code js)\n         var pars = $jit.Graph.Util.getParents(node);\n         //or...\n         var pars = node.getParents();\n         \n         if(pars.length > 0) {\n           //do stuff with parents\n         }\n       (end code)\n    */\ngetParents:function getParents(node){\nvar ans=[];\nthis.eachAdjacency(node,function(adj){\nvar n=adj.nodeTo;\nif(n._depth<node._depth)ans.push(n);\n});\nreturn ans;\n},\n\n/*\n    Method: isDescendantOf\n \n    Returns a boolean indicating if some node is descendant of the node with the given id. \n\n    Also implemented by:\n    \n    <Graph.Node>.\n    \n    \n    Parameters:\n    node - (object) A <Graph.Node>.\n    id - (string) A <Graph.Node> id.\n\n    Example:\n    (start code js)\n      $jit.Graph.Util.isDescendantOf(node, \"nodeid\"); //true|false\n      //or...\n      node.isDescendantOf('nodeid');//true|false\n    (end code)\n */\nisDescendantOf:function isDescendantOf(node,id){\nif(node.id==id)return true;\nvar pars=this.getParents(node),ans=false;\nfor(var i=0;!ans&&i<pars.length;i++){\nans=ans||this.isDescendantOf(pars[i],id);\n}\nreturn ans;\n},\n\n/*\n     Method: clean\n  \n     Cleans flags from nodes.\n\n     Also implemented by:\n     \n     <Graph>.\n     \n     Parameters:\n     graph - A <Graph> instance.\n  */\nclean:function clean(graph){this.eachNode(graph,function(elem){elem._flag=false;});},\n\n/* \n    Method: getClosestNodeToOrigin \n  \n    Returns the closest node to the center of canvas.\n  \n    Also implemented by:\n    \n    <Graph>.\n    \n    Parameters:\n   \n     graph - (object) A <Graph> instance.\n     prop - (optional|string) Default's 'current'. A <Graph.Node> position property. Possible properties are 'start', 'current' or 'end'.\n  \n  */\ngetClosestNodeToOrigin:function getClosestNodeToOrigin(graph,prop,flags){\nreturn this.getClosestNodeToPos(graph,Polar.KER,prop,flags);\n},\n\n/* \n    Method: getClosestNodeToPos\n  \n    Returns the closest node to the given position.\n  \n    Also implemented by:\n    \n    <Graph>.\n    \n    Parameters:\n   \n     graph - (object) A <Graph> instance.\n     pos - (object) A <Complex> or <Polar> instance.\n     prop - (optional|string) Default's *current*. A <Graph.Node> position property. Possible properties are 'start', 'current' or 'end'.\n  \n  */\ngetClosestNodeToPos:function getClosestNodeToPos(graph,pos,prop,flags){\nvar node=null;\nprop=prop||'current';\npos=pos&&pos.getc(true)||Complex.KER;\nvar distance=function distance(a,b){\nvar d1=a.x-b.x,d2=a.y-b.y;\nreturn d1*d1+d2*d2;\n};\nthis.eachNode(graph,function(elem){\nnode=node==null||distance(elem.getPos(prop).getc(true),pos)<distance(\nnode.getPos(prop).getc(true),pos)?elem:node;\n},flags);\nreturn node;\n}};\n\n\n//Append graph methods to <Graph>\n$.each(['get','getNode','each','eachNode','computeLevels','eachBFS','clean','getClosestNodeToPos','getClosestNodeToOrigin'],function(m){\nGraph.prototype[m]=function(){\nreturn Graph.Util[m].apply(Graph.Util,[this].concat(Array.prototype.slice.call(arguments)));\n};\n});\n\n//Append node methods to <Graph.Node>\n$.each(['eachAdjacency','eachLevel','eachSubgraph','eachSubnode','anySubnode','getSubnodes','getParents','isDescendantOf'],function(m){\nGraph.Node.prototype[m]=function(){\nreturn Graph.Util[m].apply(Graph.Util,[this].concat(Array.prototype.slice.call(arguments)));\n};\n});\n\n/*\n * File: Graph.Op.js\n *\n*/\n\n/*\n   Object: Graph.Op\n\n   Perform <Graph> operations like adding/removing <Graph.Nodes> or <Graph.Adjacences>, \n   morphing a <Graph> into another <Graph>, contracting or expanding subtrees, etc.\n\n*/\nGraph.Op={\n\noptions:{\ntype:'nothing',\nduration:2000,\nhideLabels:true,\nfps:30},\n\n\ninitialize:function initialize(viz){\nthis.viz=viz;\n},\n\n/*\n       Method: removeNode\n    \n       Removes one or more <Graph.Nodes> from the visualization. \n       It can also perform several animations like fading sequentially, fading concurrently, iterating or replotting.\n\n       Parameters:\n    \n        node - (string|array) The node's id. Can also be an array having many ids.\n        opt - (object) Animation options. It's an object with optional properties described below\n        type - (string) Default's *nothing*. Type of the animation. Can be \"nothing\", \"replot\", \"fade:seq\",  \"fade:con\" or \"iter\".\n        duration - Described in <Options.Fx>.\n        fps - Described in <Options.Fx>.\n        transition - Described in <Options.Fx>.\n        hideLabels - (boolean) Default's *true*. Hide labels during the animation.\n   \n      Example:\n      (start code js)\n        var viz = new $jit.Viz(options);\n        viz.op.removeNode('nodeId', {\n          type: 'fade:seq',\n          duration: 1000,\n          hideLabels: false,\n          transition: $jit.Trans.Quart.easeOut\n        });\n        //or also\n        viz.op.removeNode(['someId', 'otherId'], {\n          type: 'fade:con',\n          duration: 1500\n        });\n      (end code)\n    */\n\nremoveNode:function removeNode(node,opt){\nvar viz=this.viz;\nvar options=$.merge(this.options,viz.controller,opt);\nvar n=$.splat(node);\nvar i,that,nodeObj;\nswitch(options.type){\ncase'nothing':\nfor(i=0;i<n.length;i++){viz.graph.removeNode(n[i]);}\nbreak;\n\ncase'replot':\nthis.removeNode(n,{type:'nothing'});\nviz.labels.clearLabels();\nviz.refresh(true);\nbreak;\n\ncase'fade:seq':case'fade':\nthat=this;\n//set alpha to 0 for nodes to remove.\nfor(i=0;i<n.length;i++){\nnodeObj=viz.graph.getNode(n[i]);\nnodeObj.setData('alpha',0,'end');\n}\nviz.fx.animate($.merge(options,{\nmodes:['node-property:alpha'],\nonComplete:function onComplete(){\nthat.removeNode(n,{type:'nothing'});\nviz.labels.clearLabels();\nviz.reposition();\nviz.fx.animate($.merge(options,{\nmodes:['linear']}));\n\n}}));\n\nbreak;\n\ncase'fade:con':\nthat=this;\n//set alpha to 0 for nodes to remove. Tag them for being ignored on computing positions.\nfor(i=0;i<n.length;i++){\nnodeObj=viz.graph.getNode(n[i]);\nnodeObj.setData('alpha',0,'end');\nnodeObj.ignore=true;\n}\nviz.reposition();\nviz.fx.animate($.merge(options,{\nmodes:['node-property:alpha','linear'],\nonComplete:function onComplete(){\nthat.removeNode(n,{type:'nothing'});\noptions.onComplete&&options.onComplete();\n}}));\n\nbreak;\n\ncase'iter':\nthat=this;\nviz.fx.sequence({\ncondition:function condition(){return n.length!=0;},\nstep:function step(){that.removeNode(n.shift(),{type:'nothing'});viz.labels.clearLabels();},\nonComplete:function onComplete(){options.onComplete&&options.onComplete();},\nduration:Math.ceil(options.duration/n.length)});\n\nbreak;\n\ndefault:this.doError();}\n\n},\n\n/*\n       Method: removeEdge\n    \n       Removes one or more <Graph.Adjacences> from the visualization. \n       It can also perform several animations like fading sequentially, fading concurrently, iterating or replotting.\n\n       Parameters:\n    \n       vertex - (array) An array having two strings which are the ids of the nodes connected by this edge (i.e ['id1', 'id2']). Can also be a two dimensional array holding many edges (i.e [['id1', 'id2'], ['id3', 'id4'], ...]).\n       opt - (object) Animation options. It's an object with optional properties described below\n       type - (string) Default's *nothing*. Type of the animation. Can be \"nothing\", \"replot\", \"fade:seq\",  \"fade:con\" or \"iter\".\n       duration - Described in <Options.Fx>.\n       fps - Described in <Options.Fx>.\n       transition - Described in <Options.Fx>.\n       hideLabels - (boolean) Default's *true*. Hide labels during the animation.\n   \n      Example:\n      (start code js)\n        var viz = new $jit.Viz(options);\n        viz.op.removeEdge(['nodeId', 'otherId'], {\n          type: 'fade:seq',\n          duration: 1000,\n          hideLabels: false,\n          transition: $jit.Trans.Quart.easeOut\n        });\n        //or also\n        viz.op.removeEdge([['someId', 'otherId'], ['id3', 'id4']], {\n          type: 'fade:con',\n          duration: 1500\n        });\n      (end code)\n    \n    */\nremoveEdge:function removeEdge(vertex,opt){\nvar viz=this.viz;\nvar options=$.merge(this.options,viz.controller,opt);\nvar v=$.type(vertex[0])=='string'?[vertex]:vertex;\nvar i,that,adj;\nswitch(options.type){\ncase'nothing':\nfor(i=0;i<v.length;i++){viz.graph.removeAdjacence(v[i][0],v[i][1]);}\nbreak;\n\ncase'replot':\nthis.removeEdge(v,{type:'nothing'});\nviz.refresh(true);\nbreak;\n\ncase'fade:seq':case'fade':\nthat=this;\n//set alpha to 0 for edges to remove.\nfor(i=0;i<v.length;i++){\nadj=viz.graph.getAdjacence(v[i][0],v[i][1]);\nif(adj){\nadj.setData('alpha',0,'end');\n}\n}\nviz.fx.animate($.merge(options,{\nmodes:['edge-property:alpha'],\nonComplete:function onComplete(){\nthat.removeEdge(v,{type:'nothing'});\nviz.reposition();\nviz.fx.animate($.merge(options,{\nmodes:['linear']}));\n\n}}));\n\nbreak;\n\ncase'fade:con':\nthat=this;\n//set alpha to 0 for nodes to remove. Tag them for being ignored when computing positions.\nfor(i=0;i<v.length;i++){\nadj=viz.graph.getAdjacence(v[i][0],v[i][1]);\nif(adj){\nadj.setData('alpha',0,'end');\nadj.ignore=true;\n}\n}\nviz.reposition();\nviz.fx.animate($.merge(options,{\nmodes:['edge-property:alpha','linear'],\nonComplete:function onComplete(){\nthat.removeEdge(v,{type:'nothing'});\noptions.onComplete&&options.onComplete();\n}}));\n\nbreak;\n\ncase'iter':\nthat=this;\nviz.fx.sequence({\ncondition:function condition(){return v.length!=0;},\nstep:function step(){that.removeEdge(v.shift(),{type:'nothing'});viz.labels.clearLabels();},\nonComplete:function onComplete(){options.onComplete();},\nduration:Math.ceil(options.duration/v.length)});\n\nbreak;\n\ndefault:this.doError();}\n\n},\n\n/*\n       Method: sum\n    \n       Adds a new graph to the visualization. \n       The JSON graph (or tree) must at least have a common node with the current graph plotted by the visualization. \n       The resulting graph can be defined as follows <http://mathworld.wolfram.com/GraphSum.html>\n\n       Parameters:\n    \n       json - (object) A json tree or graph structure. See also <Loader.loadJSON>.\n       opt - (object) Animation options. It's an object with optional properties described below\n       type - (string) Default's *nothing*. Type of the animation. Can be \"nothing\", \"replot\", \"fade:seq\",  \"fade:con\".\n       duration - Described in <Options.Fx>.\n       fps - Described in <Options.Fx>.\n       transition - Described in <Options.Fx>.\n       hideLabels - (boolean) Default's *true*. Hide labels during the animation.\n   \n      Example:\n      (start code js)\n        //...json contains a tree or graph structure...\n\n        var viz = new $jit.Viz(options);\n        viz.op.sum(json, {\n          type: 'fade:seq',\n          duration: 1000,\n          hideLabels: false,\n          transition: $jit.Trans.Quart.easeOut\n        });\n        //or also\n        viz.op.sum(json, {\n          type: 'fade:con',\n          duration: 1500\n        });\n      (end code)\n    \n    */\nsum:function sum(json,opt){\nvar viz=this.viz;\nvar options=$.merge(this.options,viz.controller,opt),root=viz.root;\nvar graph;\nviz.root=opt.id||viz.root;\nswitch(options.type){\ncase'nothing':\ngraph=viz.construct(json);\ngraph.eachNode(function(elem){\nelem.eachAdjacency(function(adj){\nviz.graph.addAdjacence(adj.nodeFrom,adj.nodeTo,adj.data);\n});\n});\nbreak;\n\ncase'replot':\nviz.refresh(true);\nthis.sum(json,{type:'nothing'});\nviz.refresh(true);\nbreak;\n\ncase'fade:seq':case'fade':case'fade:con':\n// START METAMAPS CODE\nvar that=this;\n// ORIGINAL CODE:\n// that = this;\n// END METAMAPS CODE\ngraph=viz.construct(json);\n\n//set alpha to 0 for nodes to add.\nvar fadeEdges=this.preprocessSum(graph);\nvar modes=!fadeEdges?['node-property:alpha']:['node-property:alpha','edge-property:alpha'];\nviz.reposition();\nif(options.type!='fade:con'){\nviz.fx.animate($.merge(options,{\nmodes:['linear'],\nonComplete:function onComplete(){\nviz.fx.animate($.merge(options,{\nmodes:modes,\nonComplete:function onComplete(){\noptions.onComplete();\n}}));\n\n}}));\n\n}else{\nviz.graph.eachNode(function(elem){\nif(elem.id!=root&&elem.pos.isZero()){\nelem.pos.set(elem.endPos);\nelem.startPos.set(elem.endPos);\n}\n});\nviz.fx.animate($.merge(options,{\nmodes:['linear'].concat(modes)}));\n\n}\nbreak;\n\ndefault:this.doError();}\n\n},\n\n/*\n       Method: morph\n    \n       This method will transform the current visualized graph into the new JSON representation passed in the method. \n       The JSON object must at least have the root node in common with the current visualized graph.\n\n       Parameters:\n    \n       json - (object) A json tree or graph structure. See also <Loader.loadJSON>.\n       opt - (object) Animation options. It's an object with optional properties described below\n       type - (string) Default's *nothing*. Type of the animation. Can be \"nothing\", \"replot\", \"fade:con\".\n       duration - Described in <Options.Fx>.\n       fps - Described in <Options.Fx>.\n       transition - Described in <Options.Fx>.\n       hideLabels - (boolean) Default's *true*. Hide labels during the animation.\n       id - (string) The shared <Graph.Node> id between both graphs.\n       \n       extraModes - (optional|object) When morphing with an animation, dollar prefixed data parameters are added to \n                    *endData* and not *data* itself. This way you can animate dollar prefixed parameters during your morphing operation. \n                    For animating these extra-parameters you have to specify an object that has animation groups as keys and animation \n                    properties as values, just like specified in <Graph.Plot.animate>.\n   \n      Example:\n      (start code js)\n        //...json contains a tree or graph structure...\n\n        var viz = new $jit.Viz(options);\n        viz.op.morph(json, {\n          type: 'fade',\n          duration: 1000,\n          hideLabels: false,\n          transition: $jit.Trans.Quart.easeOut\n        });\n        //or also\n        viz.op.morph(json, {\n          type: 'fade',\n          duration: 1500\n        });\n        //if the json data contains dollar prefixed params\n        //like $width or $height these too can be animated\n        viz.op.morph(json, {\n          type: 'fade',\n          duration: 1500\n        }, {\n          'node-property': ['width', 'height']\n        });\n      (end code)\n    \n    */\nmorph:function morph(json,opt,extraModes){\nextraModes=extraModes||{};\nvar viz=this.viz;\nvar options=$.merge(this.options,viz.controller,opt),root=viz.root;\nvar graph;\n//TODO(nico) this hack makes morphing work with the Hypertree. \n//Need to check if it has been solved and this can be removed.\nviz.root=opt.id||viz.root;\nswitch(options.type){\ncase'nothing':\ngraph=viz.construct(json);\ngraph.eachNode(function(elem){\nvar nodeExists=viz.graph.hasNode(elem.id);\nelem.eachAdjacency(function(adj){\nvar adjExists=!!viz.graph.getAdjacence(adj.nodeFrom.id,adj.nodeTo.id);\nviz.graph.addAdjacence(adj.nodeFrom,adj.nodeTo,adj.data);\n//Update data properties if the node existed\nif(adjExists){\nvar addedAdj=viz.graph.getAdjacence(adj.nodeFrom.id,adj.nodeTo.id);\nfor(var prop in adj.data||{}){\naddedAdj.data[prop]=adj.data[prop];\n}\n}\n});\n//Update data properties if the node existed\nif(nodeExists){\nvar addedNode=viz.graph.getNode(elem.id);\nfor(var prop in elem.data||{}){\naddedNode.data[prop]=elem.data[prop];\n}\n}\n});\nviz.graph.eachNode(function(elem){\nelem.eachAdjacency(function(adj){\nif(!graph.getAdjacence(adj.nodeFrom.id,adj.nodeTo.id)){\nviz.graph.removeAdjacence(adj.nodeFrom.id,adj.nodeTo.id);\n}\n});\nif(!graph.hasNode(elem.id))viz.graph.removeNode(elem.id);\n});\n\nbreak;\n\ncase'replot':\nviz.labels.clearLabels(true);\nthis.morph(json,{type:'nothing'});\nviz.refresh(true);\nviz.refresh(true);\nbreak;\n\ncase'fade:seq':case'fade':case'fade:con':\n// START METAMAPS CODE\nvar that=this;\n// ORIGINAL CODE:\n// that = this;\n// END METAMAPS CODE\ngraph=viz.construct(json);\n//preprocessing for nodes to delete.\n//get node property modes to interpolate\nvar nodeModes='node-property'in extraModes&&\n$.map($.splat(extraModes['node-property']),\nfunction(n){return'$'+n;});\nviz.graph.eachNode(function(elem){\nvar graphNode=graph.getNode(elem.id);\nif(!graphNode){\nelem.setData('alpha',1);\nelem.setData('alpha',1,'start');\nelem.setData('alpha',0,'end');\nelem.ignore=true;\n}else{\n//Update node data information\nvar graphNodeData=graphNode.data;\nfor(var prop in graphNodeData){\nif(nodeModes&&$.indexOf(nodeModes,prop)>-1){\nelem.endData[prop]=graphNodeData[prop];\n}else{\nelem.data[prop]=graphNodeData[prop];\n}\n}\n}\n});\nviz.graph.eachNode(function(elem){\nif(elem.ignore)return;\nelem.eachAdjacency(function(adj){\nif(adj.nodeFrom.ignore||adj.nodeTo.ignore)return;\nvar nodeFrom=graph.getNode(adj.nodeFrom.id);\nvar nodeTo=graph.getNode(adj.nodeTo.id);\nif(!nodeFrom.adjacentTo(nodeTo)){\nvar adj=viz.graph.getAdjacence(nodeFrom.id,nodeTo.id);\nfadeEdges=true;\nadj.setData('alpha',1);\nadj.setData('alpha',1,'start');\nadj.setData('alpha',0,'end');\n}\n});\n});\n//preprocessing for adding nodes.\nvar fadeEdges=this.preprocessSum(graph);\n\nvar modes=!fadeEdges?['node-property:alpha']:\n['node-property:alpha',\n'edge-property:alpha'];\n//Append extra node-property animations (if any)\nmodes[0]=modes[0]+('node-property'in extraModes?\n':'+$.splat(extraModes['node-property']).join(':'):'');\n//Append extra edge-property animations (if any)\nmodes[1]=(modes[1]||'edge-property:alpha')+('edge-property'in extraModes?\n':'+$.splat(extraModes['edge-property']).join(':'):'');\n//Add label-property animations (if any)\nif('label-property'in extraModes){\nmodes.push('label-property:'+$.splat(extraModes['label-property']).join(':'));\n}\n//only use reposition if its implemented.\nif(viz.reposition){\nviz.reposition();\n}else{\nviz.compute('end');\n}\nviz.graph.eachNode(function(elem){\nif(elem.id!=root&&elem.pos.getp().equals(Polar.KER)){\nelem.pos.set(elem.endPos);elem.startPos.set(elem.endPos);\n}\n});\nviz.fx.animate($.merge(options,{\nmodes:[extraModes.position||'polar'].concat(modes),\nonComplete:function onComplete(){\nviz.graph.eachNode(function(elem){\nif(elem.ignore)viz.graph.removeNode(elem.id);\n});\nviz.graph.eachNode(function(elem){\nelem.eachAdjacency(function(adj){\nif(adj.ignore)viz.graph.removeAdjacence(adj.nodeFrom.id,adj.nodeTo.id);\n});\n});\noptions.onComplete();\n}}));\n\nbreak;\n\ndefault:;}\n\n},\n\n\n/*\n    Method: contract\n \n    Collapses the subtree of the given node. The node will have a _collapsed=true_ property.\n    \n    Parameters:\n \n    node - (object) A <Graph.Node>.\n    opt - (object) An object containing options described below\n    type - (string) Whether to 'replot' or 'animate' the contraction.\n   \n    There are also a number of Animation options. For more information see <Options.Fx>.\n\n    Example:\n    (start code js)\n     var viz = new $jit.Viz(options);\n     viz.op.contract(node, {\n       type: 'animate',\n       duration: 1000,\n       hideLabels: true,\n       transition: $jit.Trans.Quart.easeOut\n     });\n   (end code)\n \n   */\ncontract:function contract(node,opt){\nvar viz=this.viz;\nif(node.collapsed||!node.anySubnode($.lambda(true)))return;\nopt=$.merge(this.options,viz.config,opt||{},{\n'modes':['node-property:alpha:span','linear']});\n\nnode.collapsed=true;\n(function subn(n){\nn.eachSubnode(function(ch){\nch.ignore=true;\nch.setData('alpha',0,opt.type=='animate'?'end':'current');\nsubn(ch);\n});\n})(node);\nif(opt.type=='animate'){\nviz.compute('end');\nif(viz.rotated){\nviz.rotate(viz.rotated,'none',{\n'property':'end'});\n\n}\n(function subn(n){\nn.eachSubnode(function(ch){\nch.setPos(node.getPos('end'),'end');\nsubn(ch);\n});\n})(node);\nviz.fx.animate(opt);\n}else if(opt.type=='replot'){\nviz.refresh();\n}\n},\n\n/*\n    Method: expand\n \n    Expands the previously contracted subtree. The given node must have the _collapsed=true_ property.\n    \n    Parameters:\n \n    node - (object) A <Graph.Node>.\n    opt - (object) An object containing options described below\n    type - (string) Whether to 'replot' or 'animate'.\n     \n    There are also a number of Animation options. For more information see <Options.Fx>.\n\n    Example:\n    (start code js)\n      var viz = new $jit.Viz(options);\n      viz.op.expand(node, {\n        type: 'animate',\n        duration: 1000,\n        hideLabels: true,\n        transition: $jit.Trans.Quart.easeOut\n      });\n    (end code)\n \n   */\nexpand:function expand(node,opt){\nif(!('collapsed'in node))return;\nvar viz=this.viz;\nopt=$.merge(this.options,viz.config,opt||{},{\n'modes':['node-property:alpha:span','linear']});\n\ndelete node.collapsed;\n(function subn(n){\nn.eachSubnode(function(ch){\ndelete ch.ignore;\nch.setData('alpha',1,opt.type=='animate'?'end':'current');\nsubn(ch);\n});\n})(node);\nif(opt.type=='animate'){\nviz.compute('end');\nif(viz.rotated){\nviz.rotate(viz.rotated,'none',{\n'property':'end'});\n\n}\nviz.fx.animate(opt);\n}else if(opt.type=='replot'){\nviz.refresh();\n}\n},\n\npreprocessSum:function preprocessSum(graph){\nvar viz=this.viz;\ngraph.eachNode(function(elem){\nif(!viz.graph.hasNode(elem.id)){\nviz.graph.addNode(elem);\nvar n=viz.graph.getNode(elem.id);\nn.setData('alpha',0);\nn.setData('alpha',0,'start');\nn.setData('alpha',1,'end');\n}\n});\nvar fadeEdges=false;\ngraph.eachNode(function(elem){\nelem.eachAdjacency(function(adj){\nvar nodeFrom=viz.graph.getNode(adj.nodeFrom.id);\nvar nodeTo=viz.graph.getNode(adj.nodeTo.id);\nif(!nodeFrom.adjacentTo(nodeTo)){\nvar adj=viz.graph.addAdjacence(nodeFrom,nodeTo,adj.data);\nif(nodeFrom.startAlpha==nodeFrom.endAlpha&&\nnodeTo.startAlpha==nodeTo.endAlpha){\nfadeEdges=true;\nadj.setData('alpha',0);\nadj.setData('alpha',0,'start');\nadj.setData('alpha',1,'end');\n}\n}\n});\n});\nreturn fadeEdges;\n}};\n\n\n\n\n/*\n   File: Helpers.js\n \n   Helpers are objects that contain rendering primitives (like rectangles, ellipses, etc), for plotting nodes and edges.\n   Helpers also contain implementations of the *contains* method, a method returning a boolean indicating whether the mouse\n   position is over the rendered shape.\n   \n   Helpers are very useful when implementing new NodeTypes, since you can access them through *this.nodeHelper* and \n   *this.edgeHelper* <Graph.Plot> properties, providing you with simple primitives and mouse-position check functions.\n   \n   Example:\n   (start code js)\n   //implement a new node type\n   $jit.Viz.Plot.NodeTypes.implement({\n     'customNodeType': {\n       'render': function(node, canvas) {\n         this.nodeHelper.circle.render ...\n       },\n       'contains': function(node, pos) {\n         this.nodeHelper.circle.contains ...\n       }\n     }\n   });\n   //implement an edge type\n   $jit.Viz.Plot.EdgeTypes.implement({\n     'customNodeType': {\n       'render': function(node, canvas) {\n         this.edgeHelper.circle.render ...\n       },\n       //optional\n       'contains': function(node, pos) {\n         this.edgeHelper.circle.contains ...\n       }\n     }\n   });\n   (end code)\n\n*/\n\n/*\n   Object: NodeHelper\n   \n   Contains rendering and other type of primitives for simple shapes.\n */\nvar NodeHelper={\n'none':{\n'render':$.empty,\n'contains':$.lambda(false)},\n\n/*\n   Object: NodeHelper.circle\n   */\n'circle':{\n/*\n     Method: render\n     \n     Renders a circle into the canvas.\n     \n     Parameters:\n     \n     type - (string) Possible options are 'fill' or 'stroke'.\n     pos - (object) An *x*, *y* object with the position of the center of the circle.\n     radius - (number) The radius of the circle to be rendered.\n     canvas - (object) A <Canvas> instance.\n     \n     Example:\n     (start code js)\n     NodeHelper.circle.render('fill', { x: 10, y: 30 }, 30, viz.canvas);\n     (end code)\n     */\n'render':function render(type,pos,radius,canvas){\nvar ctx=canvas.getCtx();\nctx.beginPath();\nctx.arc(pos.x,pos.y,radius,0,Math.PI*2,true);\nctx.closePath();\nctx[type]();\n},\n/*\n    Method: contains\n    \n    Returns *true* if *pos* is contained in the area of the shape. Returns *false* otherwise.\n    \n    Parameters:\n    \n    npos - (object) An *x*, *y* object with the <Graph.Node> position.\n    pos - (object) An *x*, *y* object with the position to check.\n    radius - (number) The radius of the rendered circle.\n    \n    Example:\n    (start code js)\n    NodeHelper.circle.contains({ x: 10, y: 30 }, { x: 15, y: 35 }, 30); //true\n    (end code)\n    */\n'contains':function contains(npos,pos,radius){\nvar diffx=npos.x-pos.x,\ndiffy=npos.y-pos.y,\ndiff=diffx*diffx+diffy*diffy;\nreturn diff<=radius*radius;\n}},\n\n/*\n  Object: NodeHelper.ellipse\n  */\n'ellipse':{\n/*\n    Method: render\n    \n    Renders an ellipse into the canvas.\n    \n    Parameters:\n    \n    type - (string) Possible options are 'fill' or 'stroke'.\n    pos - (object) An *x*, *y* object with the position of the center of the ellipse.\n    width - (number) The width of the ellipse.\n    height - (number) The height of the ellipse.\n    canvas - (object) A <Canvas> instance.\n    \n    Example:\n    (start code js)\n    NodeHelper.ellipse.render('fill', { x: 10, y: 30 }, 30, 40, viz.canvas);\n    (end code)\n    */\n'render':function render(type,pos,width,height,canvas){\nvar ctx=canvas.getCtx(),\nscalex=1,\nscaley=1,\nscaleposx=1,\nscaleposy=1,\nradius=0;\n\nif(width>height){\nradius=width/2;\nscaley=height/width;\nscaleposy=width/height;\n}else{\nradius=height/2;\nscalex=width/height;\nscaleposx=height/width;\n}\n\nctx.save();\nctx.scale(scalex,scaley);\nctx.beginPath();\nctx.arc(pos.x*scaleposx,pos.y*scaleposy,radius,0,Math.PI*2,true);\nctx.closePath();\nctx[type]();\nctx.restore();\n},\n/*\n    Method: contains\n    \n    Returns *true* if *pos* is contained in the area of the shape. Returns *false* otherwise.\n    \n    Parameters:\n    \n    npos - (object) An *x*, *y* object with the <Graph.Node> position.\n    pos - (object) An *x*, *y* object with the position to check.\n    width - (number) The width of the rendered ellipse.\n    height - (number) The height of the rendered ellipse.\n    \n    Example:\n    (start code js)\n    NodeHelper.ellipse.contains({ x: 10, y: 30 }, { x: 15, y: 35 }, 30, 40);\n    (end code)\n    */\n'contains':function contains(npos,pos,width,height){\nvar radius=0,\nscalex=1,\nscaley=1,\ndiffx=0,\ndiffy=0,\ndiff=0;\n\nif(width>height){\nradius=width/2;\nscaley=height/width;\n}else{\nradius=height/2;\nscalex=width/height;\n}\n\ndiffx=(npos.x-pos.x)*(1/scalex);\ndiffy=(npos.y-pos.y)*(1/scaley);\ndiff=diffx*diffx+diffy*diffy;\nreturn diff<=radius*radius;\n}},\n\n/*\n  Object: NodeHelper.square\n  */\n'square':{\n/*\n    Method: render\n    \n    Renders a square into the canvas.\n    \n    Parameters:\n    \n    type - (string) Possible options are 'fill' or 'stroke'.\n    pos - (object) An *x*, *y* object with the position of the center of the square.\n    dim - (number) The radius (or half-diameter) of the square.\n    canvas - (object) A <Canvas> instance.\n    \n    Example:\n    (start code js)\n    NodeHelper.square.render('stroke', { x: 10, y: 30 }, 40, viz.canvas);\n    (end code)\n    */\n'render':function render(type,pos,dim,canvas){\ncanvas.getCtx()[type+\"Rect\"](pos.x-dim,pos.y-dim,2*dim,2*dim);\n},\n/*\n    Method: contains\n    \n    Returns *true* if *pos* is contained in the area of the shape. Returns *false* otherwise.\n    \n    Parameters:\n    \n    npos - (object) An *x*, *y* object with the <Graph.Node> position.\n    pos - (object) An *x*, *y* object with the position to check.\n    dim - (number) The radius (or half-diameter) of the square.\n    \n    Example:\n    (start code js)\n    NodeHelper.square.contains({ x: 10, y: 30 }, { x: 15, y: 35 }, 30);\n    (end code)\n    */\n'contains':function contains(npos,pos,dim){\nreturn Math.abs(pos.x-npos.x)<=dim&&Math.abs(pos.y-npos.y)<=dim;\n}},\n\n/*\n  Object: NodeHelper.rectangle\n  */\n'rectangle':{\n/*\n    Method: render\n    \n    Renders a rectangle into the canvas.\n    \n    Parameters:\n    \n    type - (string) Possible options are 'fill' or 'stroke'.\n    pos - (object) An *x*, *y* object with the position of the center of the rectangle.\n    width - (number) The width of the rectangle.\n    height - (number) The height of the rectangle.\n    canvas - (object) A <Canvas> instance.\n    \n    Example:\n    (start code js)\n    NodeHelper.rectangle.render('fill', { x: 10, y: 30 }, 30, 40, viz.canvas);\n    (end code)\n    */\n'render':function render(type,pos,width,height,canvas){\ncanvas.getCtx()[type+\"Rect\"](pos.x-width/2,pos.y-height/2,\nwidth,height);\n},\n/*\n    Method: contains\n    \n    Returns *true* if *pos* is contained in the area of the shape. Returns *false* otherwise.\n    \n    Parameters:\n    \n    npos - (object) An *x*, *y* object with the <Graph.Node> position.\n    pos - (object) An *x*, *y* object with the position to check.\n    width - (number) The width of the rendered rectangle.\n    height - (number) The height of the rendered rectangle.\n    \n    Example:\n    (start code js)\n    NodeHelper.rectangle.contains({ x: 10, y: 30 }, { x: 15, y: 35 }, 30, 40);\n    (end code)\n    */\n'contains':function contains(npos,pos,width,height){\nreturn Math.abs(pos.x-npos.x)<=width/2&&\nMath.abs(pos.y-npos.y)<=height/2;\n}},\n\n/*\n  Object: NodeHelper.triangle\n  */\n'triangle':{\n/*\n    Method: render\n    \n    Renders a triangle into the canvas.\n    \n    Parameters:\n    \n    type - (string) Possible options are 'fill' or 'stroke'.\n    pos - (object) An *x*, *y* object with the position of the center of the triangle.\n    dim - (number) Half the base and half the height of the triangle.\n    canvas - (object) A <Canvas> instance.\n    \n    Example:\n    (start code js)\n    NodeHelper.triangle.render('stroke', { x: 10, y: 30 }, 40, viz.canvas);\n    (end code)\n    */\n'render':function render(type,pos,dim,canvas){\nvar ctx=canvas.getCtx(),\nc1x=pos.x,\nc1y=pos.y-dim,\nc2x=c1x-dim,\nc2y=pos.y+dim,\nc3x=c1x+dim,\nc3y=c2y;\nctx.beginPath();\nctx.moveTo(c1x,c1y);\nctx.lineTo(c2x,c2y);\nctx.lineTo(c3x,c3y);\nctx.closePath();\nctx[type]();\n},\n/*\n    Method: contains\n    \n    Returns *true* if *pos* is contained in the area of the shape. Returns *false* otherwise.\n    \n    Parameters:\n    \n    npos - (object) An *x*, *y* object with the <Graph.Node> position.\n    pos - (object) An *x*, *y* object with the position to check.\n    dim - (number) Half the base and half the height of the triangle.\n    \n    Example:\n    (start code js)\n    NodeHelper.triangle.contains({ x: 10, y: 30 }, { x: 15, y: 35 }, 30);\n    (end code)\n    */\n'contains':function contains(npos,pos,dim){\nreturn NodeHelper.circle.contains(npos,pos,dim);\n}},\n\n/*\n  Object: NodeHelper.star\n  */\n'star':{\n/*\n    Method: render\n    \n    Renders a star (concave decagon) into the canvas.\n    \n    Parameters:\n    \n    type - (string) Possible options are 'fill' or 'stroke'.\n    pos - (object) An *x*, *y* object with the position of the center of the star.\n    dim - (number) The length of a side of a concave decagon.\n    canvas - (object) A <Canvas> instance.\n    \n    Example:\n    (start code js)\n    NodeHelper.star.render('stroke', { x: 10, y: 30 }, 40, viz.canvas);\n    (end code)\n    */\n'render':function render(type,pos,dim,canvas){\nvar ctx=canvas.getCtx(),\npi5=Math.PI/5;\nctx.save();\nctx.translate(pos.x,pos.y);\nctx.beginPath();\nctx.moveTo(dim,0);\nfor(var i=0;i<9;i++){\nctx.rotate(pi5);\nif(i%2==0){\nctx.lineTo(dim/0.525731*0.200811,0);\n}else{\nctx.lineTo(dim,0);\n}\n}\nctx.closePath();\nctx[type]();\nctx.restore();\n},\n/*\n    Method: contains\n    \n    Returns *true* if *pos* is contained in the area of the shape. Returns *false* otherwise.\n    \n    Parameters:\n    \n    npos - (object) An *x*, *y* object with the <Graph.Node> position.\n    pos - (object) An *x*, *y* object with the position to check.\n    dim - (number) The length of a side of a concave decagon.\n    \n    Example:\n    (start code js)\n    NodeHelper.star.contains({ x: 10, y: 30 }, { x: 15, y: 35 }, 30);\n    (end code)\n    */\n'contains':function contains(npos,pos,dim){\nreturn NodeHelper.circle.contains(npos,pos,dim);\n}}};\n\n\n\n/*\n  Object: EdgeHelper\n  \n  Contains rendering primitives for simple edge shapes.\n*/\nvar EdgeHelper={\n/*\n    Object: EdgeHelper.line\n  */\n'line':{\n/*\n      Method: render\n      \n      Renders a line into the canvas.\n      \n      Parameters:\n      \n      from - (object) An *x*, *y* object with the starting position of the line.\n      to - (object) An *x*, *y* object with the ending position of the line.\n      canvas - (object) A <Canvas> instance.\n      \n      Example:\n      (start code js)\n      EdgeHelper.line.render({ x: 10, y: 30 }, { x: 10, y: 50 }, viz.canvas);\n      (end code)\n      */\n'render':function render(from,to,canvas){\nvar ctx=canvas.getCtx();\nctx.beginPath();\nctx.moveTo(from.x,from.y);\nctx.lineTo(to.x,to.y);\nctx.stroke();\n},\n/*\n      Method: contains\n      \n      Returns *true* if *pos* is contained in the area of the shape. Returns *false* otherwise.\n      \n      Parameters:\n      \n      posFrom - (object) An *x*, *y* object with a <Graph.Node> position.\n      posTo - (object) An *x*, *y* object with a <Graph.Node> position.\n      pos - (object) An *x*, *y* object with the position to check.\n      epsilon - (number) The dimension of the shape.\n      \n      Example:\n      (start code js)\n      EdgeHelper.line.contains({ x: 10, y: 30 }, { x: 15, y: 35 }, { x: 15, y: 35 }, 30);\n      (end code)\n      */\n'contains':function contains(posFrom,posTo,pos,epsilon){\nvar min=Math.min,\nmax=Math.max,\nminPosX=min(posFrom.x,posTo.x),\nmaxPosX=max(posFrom.x,posTo.x),\nminPosY=min(posFrom.y,posTo.y),\nmaxPosY=max(posFrom.y,posTo.y);\n\nif(pos.x>=minPosX&&pos.x<=maxPosX&&\npos.y>=minPosY&&pos.y<=maxPosY){\nif(Math.abs(posTo.x-posFrom.x)<=epsilon){\n\nreturn true;\n}\nvar dist=(posTo.y-posFrom.y)/(posTo.x-posFrom.x)*(pos.x-posFrom.x)+posFrom.y;\n\nreturn Math.abs(dist-pos.y)<=epsilon;\n}\nreturn false;\n}},\n\n/*\n    Object: EdgeHelper.arrow\n  */\n'arrow':{\n/*\n      Method: render\n      \n      Renders an arrow into the canvas.\n      \n      Parameters:\n      \n      from - (object) An *x*, *y* object with the starting position of the arrow.\n      to - (object) An *x*, *y* object with the ending position of the arrow.\n      dim - (number) The dimension of the arrow.\n      swap - (boolean) Whether to set the arrow pointing to the starting position or the ending position.\n      canvas - (object) A <Canvas> instance.\n      \n      Example:\n      (start code js)\n      EdgeHelper.arrow.render({ x: 10, y: 30 }, { x: 10, y: 50 }, 13, false, viz.canvas);\n      (end code)\n      */\n'render':function render(from,to,dim,swap,canvas){\nvar ctx=canvas.getCtx();\n// invert edge direction\nif(swap){\nvar tmp=from;\nfrom=to;\nto=tmp;\n}\nvar vect=new Complex(to.x-from.x,to.y-from.y);\nvect.$scale(dim/vect.norm());\nvar intermediatePoint=new Complex(to.x-vect.x,to.y-vect.y),\nnormal=new Complex(-vect.y/2,vect.x/2),\nv1=intermediatePoint.add(normal),\nv2=intermediatePoint.$add(normal.$scale(-1));\n\nctx.beginPath();\nctx.moveTo(from.x,from.y);\nctx.lineTo(to.x,to.y);\nctx.stroke();\nctx.beginPath();\nctx.moveTo(v1.x,v1.y);\nctx.lineTo(v2.x,v2.y);\nctx.lineTo(to.x,to.y);\nctx.closePath();\nctx.fill();\n},\n/*\n    Method: contains\n    \n    Returns *true* if *pos* is contained in the area of the shape. Returns *false* otherwise.\n    \n    Parameters:\n    \n    posFrom - (object) An *x*, *y* object with a <Graph.Node> position.\n    posTo - (object) An *x*, *y* object with a <Graph.Node> position.\n    pos - (object) An *x*, *y* object with the position to check.\n    epsilon - (number) The dimension of the shape.\n    \n    Example:\n    (start code js)\n    EdgeHelper.arrow.contains({ x: 10, y: 30 }, { x: 15, y: 35 }, { x: 15, y: 35 }, 30);\n    (end code)\n    */\n'contains':function contains(posFrom,posTo,pos,epsilon){\nreturn EdgeHelper.line.contains(posFrom,posTo,pos,epsilon);\n}},\n\n/*\n    Object: EdgeHelper.hyperline\n  */\n'hyperline':{\n/*\n    Method: render\n    \n    Renders a hyperline into the canvas. A hyperline are the lines drawn for the <Hypertree> visualization.\n    \n    Parameters:\n    \n    from - (object) An *x*, *y* object with the starting position of the hyperline. *x* and *y* must belong to [0, 1).\n    to - (object) An *x*, *y* object with the ending position of the hyperline. *x* and *y* must belong to [0, 1).\n    r - (number) The scaling factor.\n    canvas - (object) A <Canvas> instance.\n    \n    Example:\n    (start code js)\n    EdgeHelper.hyperline.render({ x: 10, y: 30 }, { x: 10, y: 50 }, 100, viz.canvas);\n    (end code)\n    */\n'render':function render(from,to,r,canvas){\nvar ctx=canvas.getCtx();\nvar centerOfCircle=computeArcThroughTwoPoints(from,to);\nif(centerOfCircle.a>1000||centerOfCircle.b>1000||\ncenterOfCircle.ratio<0){\nctx.beginPath();\nctx.moveTo(from.x*r,from.y*r);\nctx.lineTo(to.x*r,to.y*r);\nctx.stroke();\n}else{\nvar angleBegin=Math.atan2(to.y-centerOfCircle.y,to.x-\ncenterOfCircle.x);\nvar angleEnd=Math.atan2(from.y-centerOfCircle.y,from.x-\ncenterOfCircle.x);\nvar sense=sense(angleBegin,angleEnd);\nctx.beginPath();\nctx.arc(centerOfCircle.x*r,centerOfCircle.y*r,centerOfCircle.ratio*\nr,angleBegin,angleEnd,sense);\nctx.stroke();\n}\n/*      \n        Calculates the arc parameters through two points.\n        \n        More information in <http://en.wikipedia.org/wiki/Poincar%C3%A9_disc_model#Analytic_geometry_constructions_in_the_hyperbolic_plane> \n      \n        Parameters:\n      \n        p1 - A <Complex> instance.\n        p2 - A <Complex> instance.\n        scale - The Disk's diameter.\n      \n        Returns:\n      \n        An object containing some arc properties.\n      */\nfunction computeArcThroughTwoPoints(p1,p2){\nvar aDen=p1.x*p2.y-p1.y*p2.x,bDen=aDen;\nvar sq1=p1.squaredNorm(),sq2=p2.squaredNorm();\n// Fall back to a straight line\nif(aDen==0)\nreturn{\nx:0,\ny:0,\nratio:-1};\n\n\nvar a=(p1.y*sq2-p2.y*sq1+p1.y-p2.y)/aDen;\nvar b=(p2.x*sq1-p1.x*sq2+p2.x-p1.x)/bDen;\nvar x=-a/2;\nvar y=-b/2;\nvar squaredRatio=(a*a+b*b)/4-1;\n// Fall back to a straight line\nif(squaredRatio<0)\nreturn{\nx:0,\ny:0,\nratio:-1};\n\nvar ratio=Math.sqrt(squaredRatio);\nvar out={\nx:x,\ny:y,\nratio:ratio>1000?-1:ratio,\na:a,\nb:b};\n\n\nreturn out;\n}\n/*      \n        Sets angle direction to clockwise (true) or counterclockwise (false). \n         \n        Parameters: \n      \n           angleBegin - Starting angle for drawing the arc. \n           angleEnd - The HyperLine will be drawn from angleBegin to angleEnd. \n      \n        Returns: \n      \n           A Boolean instance describing the sense for drawing the HyperLine. \n      */\nfunction sense(angleBegin,angleEnd){\nreturn angleBegin<angleEnd?angleBegin+Math.PI>angleEnd?false:\ntrue:angleEnd+Math.PI>angleBegin?true:false;\n}\n},\n/*\n    Method: contains\n    \n    Not Implemented\n    \n    Returns *true* if *pos* is contained in the area of the shape. Returns *false* otherwise.\n    \n    Parameters:\n    \n    posFrom - (object) An *x*, *y* object with a <Graph.Node> position.\n    posTo - (object) An *x*, *y* object with a <Graph.Node> position.\n    pos - (object) An *x*, *y* object with the position to check.\n    epsilon - (number) The dimension of the shape.\n    \n    Example:\n    (start code js)\n    EdgeHelper.hyperline.contains({ x: 10, y: 30 }, { x: 15, y: 35 }, { x: 15, y: 35 }, 30);\n    (end code)\n    */\n'contains':$.lambda(false)}};\n\n\n\n\n/*\n * File: Graph.Plot.js\n */\n\n/*\n   Object: Graph.Plot\n\n   <Graph> rendering and animation methods.\n   \n   Properties:\n   \n   nodeHelper - <NodeHelper> object.\n   edgeHelper - <EdgeHelper> object.\n*/\nGraph.Plot={\n//Default initializer\ninitialize:function initialize(viz,klass){\nthis.viz=viz;\nthis.config=viz.config;\nthis.node=viz.config.Node;\nthis.edge=viz.config.Edge;\nthis.animation=new Animation();\nthis.nodeTypes=new klass.Plot.NodeTypes();\nthis.edgeTypes=new klass.Plot.EdgeTypes();\nthis.labels=viz.labels;\n},\n\n//Add helpers\nnodeHelper:NodeHelper,\nedgeHelper:EdgeHelper,\n\nInterpolator:{\n//node/edge property parsers\n'map':{\n'border':'color',\n'color':'color',\n'width':'number',\n'height':'number',\n'dim':'number',\n'alpha':'number',\n'lineWidth':'number',\n'angularWidth':'number',\n'span':'number',\n'valueArray':'array-number',\n'dimArray':'array-number'\n//'colorArray':'array-color'\n},\n\n//canvas specific parsers\n'canvas':{\n'globalAlpha':'number',\n'fillStyle':'color',\n'strokeStyle':'color',\n'lineWidth':'number',\n'shadowBlur':'number',\n'shadowColor':'color',\n'shadowOffsetX':'number',\n'shadowOffsetY':'number',\n'miterLimit':'number'},\n\n\n//label parsers\n'label':{\n'size':'number',\n'color':'color'},\n\n\n//Number interpolator\n'compute':function compute(from,to,delta){\nreturn from+(to-from)*delta;\n},\n\n//Position interpolators\n'moebius':function moebius(elem,props,delta,vector){\nvar v=vector.scale(-delta);\nif(v.norm()<1){\nvar x=v.x,y=v.y;\nvar ans=elem.startPos.\ngetc().moebiusTransformation(v);\nelem.pos.setc(ans.x,ans.y);\nv.x=x;v.y=y;\n}\n},\n\n'linear':function linear(elem,props,delta){\nvar from=elem.startPos.getc(true);\nvar to=elem.endPos.getc(true);\nelem.pos.setc(this.compute(from.x,to.x,delta),\nthis.compute(from.y,to.y,delta));\n},\n\n'polar':function polar(elem,props,delta){\nvar from=elem.startPos.getp(true);\nvar to=elem.endPos.getp();\nvar ans=to.interpolate(from,delta);\nelem.pos.setp(ans.theta,ans.rho);\n},\n\n//Graph's Node/Edge interpolators\n'number':function number(elem,prop,delta,getter,setter){\nvar from=elem[getter](prop,'start');\nvar to=elem[getter](prop,'end');\nelem[setter](prop,this.compute(from,to,delta));\n},\n\n'color':function color(elem,prop,delta,getter,setter){\nvar from=$.hexToRgb(elem[getter](prop,'start'));\nvar to=$.hexToRgb(elem[getter](prop,'end'));\nvar comp=this.compute;\nvar val=$.rgbToHex([parseInt(comp(from[0],to[0],delta)),\nparseInt(comp(from[1],to[1],delta)),\nparseInt(comp(from[2],to[2],delta))]);\n\nelem[setter](prop,val);\n},\n\n'array-number':function arrayNumber(elem,prop,delta,getter,setter){\nvar from=elem[getter](prop,'start'),\nto=elem[getter](prop,'end'),\ncur=[];\nfor(var i=0,l=from.length;i<l;i++){\nvar fromi=from[i],toi=to[i];\nif(fromi.length){\nfor(var j=0,len=fromi.length,curi=[];j<len;j++){\ncuri.push(this.compute(fromi[j],toi[j],delta));\n}\ncur.push(curi);\n}else{\ncur.push(this.compute(fromi,toi,delta));\n}\n}\nelem[setter](prop,cur);\n},\n\n'node':function node(elem,props,delta,map,getter,setter){\nmap=this[map];\nif(props){\nvar len=props.length;\nfor(var i=0;i<len;i++){\nvar pi=props[i];\nthis[map[pi]](elem,pi,delta,getter,setter);\n}\n}else{\nfor(var pi in map){\nthis[map[pi]](elem,pi,delta,getter,setter);\n}\n}\n},\n\n'edge':function edge(elem,props,delta,mapKey,getter,setter){\nvar adjs=elem.adjacencies;\nfor(var id in adjs){this['node'](adjs[id],props,delta,mapKey,getter,setter);}\n},\n\n'node-property':function nodeProperty(elem,props,delta){\nthis['node'](elem,props,delta,'map','getData','setData');\n},\n\n'edge-property':function edgeProperty(elem,props,delta){\nthis['edge'](elem,props,delta,'map','getData','setData');\n},\n\n'label-property':function labelProperty(elem,props,delta){\nthis['node'](elem,props,delta,'label','getLabelData','setLabelData');\n},\n\n'node-style':function nodeStyle(elem,props,delta){\nthis['node'](elem,props,delta,'canvas','getCanvasStyle','setCanvasStyle');\n},\n\n'edge-style':function edgeStyle(elem,props,delta){\nthis['edge'](elem,props,delta,'canvas','getCanvasStyle','setCanvasStyle');\n}},\n\n\n\n/*\n       sequence\n    \n       Iteratively performs an action while refreshing the state of the visualization.\n\n       Parameters:\n\n       options - (object) An object containing some sequence options described below\n       condition - (function) A function returning a boolean instance in order to stop iterations.\n       step - (function) A function to execute on each step of the iteration.\n       onComplete - (function) A function to execute when the sequence finishes.\n       duration - (number) Duration (in milliseconds) of each step.\n\n      Example:\n       (start code js)\n        var rg = new $jit.RGraph(options);\n        var i = 0;\n        rg.fx.sequence({\n          condition: function() {\n           return i == 10;\n          },\n          step: function() {\n            alert(i++);\n          },\n          onComplete: function() {\n           alert('done!');\n          }\n        });\n       (end code)\n\n    */\nsequence:function sequence(options){\nvar that=this;\noptions=$.merge({\ncondition:$.lambda(false),\nstep:$.empty,\nonComplete:$.empty,\nduration:200},\noptions||{});\n\nvar interval=setInterval(function(){\nif(options.condition()){\noptions.step();\n}else{\nclearInterval(interval);\noptions.onComplete();\n}\nthat.viz.refresh(true);\n},options.duration);\n},\n\n/*\n      prepare\n \n      Prepare graph position and other attribute values before performing an Animation. \n      This method is used internally by the Toolkit.\n      \n      See also:\n       \n       <Animation>, <Graph.Plot.animate>\n\n    */\nprepare:function prepare(modes){\nvar graph=this.viz.graph,\naccessors={\n'node-property':{\n'getter':'getData',\n'setter':'setData'},\n\n'edge-property':{\n'getter':'getData',\n'setter':'setData'},\n\n'node-style':{\n'getter':'getCanvasStyle',\n'setter':'setCanvasStyle'},\n\n'edge-style':{\n'getter':'getCanvasStyle',\n'setter':'setCanvasStyle'}};\n\n\n\n//parse modes\nvar m={};\nif($.type(modes)=='array'){\nfor(var i=0,len=modes.length;i<len;i++){\nvar elems=modes[i].split(':');\nm[elems.shift()]=elems;\n}\n}else{\nfor(var p in modes){\nif(p=='position'){\nm[modes.position]=[];\n}else{\nm[p]=$.splat(modes[p]);\n}\n}\n}\n\ngraph.eachNode(function(node){\nnode.startPos.set(node.pos);\n$.each(['node-property','node-style'],function(p){\nif(p in m){\nvar prop=m[p];\nfor(var i=0,l=prop.length;i<l;i++){\nnode[accessors[p].setter](prop[i],node[accessors[p].getter](prop[i]),'start');\n}\n}\n});\n$.each(['edge-property','edge-style'],function(p){\nif(p in m){\nvar prop=m[p];\nnode.eachAdjacency(function(adj){\nfor(var i=0,l=prop.length;i<l;i++){\nadj[accessors[p].setter](prop[i],adj[accessors[p].getter](prop[i]),'start');\n}\n});\n}\n});\n});\nreturn m;\n},\n\n/*\n       Method: animate\n    \n       Animates a <Graph> by interpolating some <Graph.Node>, <Graph.Adjacence> or <Graph.Label> properties.\n\n       Parameters:\n\n       opt - (object) Animation options. The object properties are described below\n       duration - (optional) Described in <Options.Fx>.\n       fps - (optional) Described in <Options.Fx>.\n       hideLabels - (optional|boolean) Whether to hide labels during the animation.\n       modes - (required|object) An object with animation modes (described below).\n\n       Animation modes:\n       \n       Animation modes are strings representing different node/edge and graph properties that you'd like to animate. \n       They are represented by an object that has as keys main categories of properties to animate and as values a list \n       of these specific properties. The properties are described below\n       \n       position - Describes the way nodes' positions must be interpolated. Possible values are 'linear', 'polar' or 'moebius'.\n       node-property - Describes which Node properties will be interpolated. These properties can be any of the ones defined in <Options.Node>.\n       edge-property - Describes which Edge properties will be interpolated. These properties can be any the ones defined in <Options.Edge>.\n       label-property - Describes which Label properties will be interpolated. These properties can be any of the ones defined in <Options.Label> like color or size.\n       node-style - Describes which Node Canvas Styles will be interpolated. These are specific canvas properties like fillStyle, strokeStyle, lineWidth, shadowBlur, shadowColor, shadowOffsetX, shadowOffsetY, etc.\n       edge-style - Describes which Edge Canvas Styles will be interpolated. These are specific canvas properties like fillStyle, strokeStyle, lineWidth, shadowBlur, shadowColor, shadowOffsetX, shadowOffsetY, etc.\n\n       Example:\n       (start code js)\n       var viz = new $jit.Viz(options);\n       //...tweak some Data, CanvasStyles or LabelData properties...\n       viz.fx.animate({\n         modes: {\n           'position': 'linear',\n           'node-property': ['width', 'height'],\n           'node-style': 'shadowColor',\n           'label-property': 'size'\n         },\n         hideLabels: false\n       });\n       //...can also be written like this...\n       viz.fx.animate({\n         modes: ['linear',\n                 'node-property:width:height',\n                 'node-style:shadowColor',\n                 'label-property:size'],\n         hideLabels: false\n       });\n       (end code)\n    */\nanimate:function animate(opt,versor){\nopt=$.merge(this.viz.config,opt||{});\nvar that=this,\nviz=this.viz,\ngraph=viz.graph,\ninterp=this.Interpolator,\nanimation=opt.type==='nodefx'?this.nodeFxAnimation:this.animation;\n//prepare graph values\nvar m=this.prepare(opt.modes);\n\n//animate\nif(opt.hideLabels)this.labels.hideLabels(true);\nanimation.setOptions($.extend(opt,{\n$animating:false,\ncompute:function compute(delta){\ngraph.eachNode(function(node){\nfor(var p in m){\ninterp[p](node,m[p],delta,versor);\n}\n});\nthat.plot(opt,this.$animating,delta);\nthis.$animating=true;\n},\ncomplete:function complete(){\nif(opt.hideLabels)that.labels.hideLabels(false);\nthat.plot(opt);\nopt.onComplete();\n//TODO(nico): This shouldn't be here!\n//opt.onAfterCompute();\n}})).\nstart();\n},\n\n/*\n      nodeFx\n   \n      Apply animation to node properties like color, width, height, dim, etc.\n  \n      Parameters:\n  \n      options - Animation options. This object properties is described below\n      elements - The Elements to be transformed. This is an object that has a properties\n      \n      (start code js)\n      'elements': {\n        //can also be an array of ids\n        'id': 'id-of-node-to-transform',\n        //properties to be modified. All properties are optional.\n        'properties': {\n          'color': '#ccc', //some color\n          'width': 10, //some width\n          'height': 10, //some height\n          'dim': 20, //some dim\n          'lineWidth': 10 //some line width\n        } \n      }\n      (end code)\n      \n      - _reposition_ Whether to recalculate positions and add a motion animation. \n      This might be used when changing _width_ or _height_ properties in a <Layouts.Tree> like layout. Default's *false*.\n      \n      - _onComplete_ A method that is called when the animation completes.\n      \n      ...and all other <Graph.Plot.animate> options like _duration_, _fps_, _transition_, etc.\n  \n      Example:\n      (start code js)\n       var rg = new RGraph(canvas, config); //can be also Hypertree or ST\n       rg.fx.nodeFx({\n         'elements': {\n           'id':'mynodeid',\n           'properties': {\n             'color':'#ccf'\n           },\n           'transition': Trans.Quart.easeOut\n         }\n       });\n      (end code)    \n   */\nnodeFx:function nodeFx(opt){\nvar viz=this.viz,\ngraph=viz.graph,\nanimation=this.nodeFxAnimation,\noptions=$.merge(this.viz.config,{\n'elements':{\n'id':false,\n'properties':{}},\n\n'reposition':false});\n\nopt=$.merge(options,opt||{},{\nonBeforeCompute:$.empty,\nonAfterCompute:$.empty});\n\n//check if an animation is running\nanimation.stopTimer();\nvar props=opt.elements.properties;\n//set end values for nodes\nif(!opt.elements.id){\ngraph.eachNode(function(n){\nfor(var prop in props){\nn.setData(prop,props[prop],'end');\n}\n});\n}else{\nvar ids=$.splat(opt.elements.id);\n$.each(ids,function(id){\nvar n=graph.getNode(id);\nif(n){\nfor(var prop in props){\nn.setData(prop,props[prop],'end');\n}\n}\n});\n}\n//get keys\nvar propnames=[];\nfor(var prop in props){propnames.push(prop);}\n//add node properties modes\nvar modes=['node-property:'+propnames.join(':')];\n//set new node positions\nif(opt.reposition){\nmodes.push('linear');\nviz.compute('end');\n}\n//animate\nthis.animate($.merge(opt,{\nmodes:modes,\ntype:'nodefx'}));\n\n},\n\n\n/*\n       Method: plot\n    \n       Plots a <Graph>.\n\n       Parameters:\n\n       opt - (optional) Plotting options. Most of them are described in <Options.Fx>.\n\n       Example:\n\n       (start code js)\n       var viz = new $jit.Viz(options);\n       viz.fx.plot(); \n       (end code)\n\n    */\nplot:function plot(opt,animating){\nvar viz=this.viz,\naGraph=viz.graph,\ncanvas=viz.canvas,\nid=viz.root,\nthat=this,\nctx=canvas.getCtx(),\nmin=Math.min,\nopt=opt||this.viz.controller;\n\nopt.clearCanvas&&canvas.clear();\n\nvar root=aGraph.getNode(id);\nif(!root)return;\n\nvar T=!!root.visited;\n\n//START METAMAPS CODE\nif(Metamaps.Mouse.synapseStartCoordinates.length>0&&Metamaps.Mouse.synapseEndCoordinates){\nctx.save();\nvar start;\nvar end=Metamaps.Mouse.synapseEndCoordinates;\n\nvar l=Metamaps.Mouse.synapseStartCoordinates.length;\nfor(var i=l-1;i>=0;i-=1){\nstart=Metamaps.Mouse.synapseStartCoordinates[i];\nMetamaps.JIT.renderMidArrow(start,end,13,false,canvas,0.3,true);\nMetamaps.JIT.renderMidArrow(start,end,13,false,canvas,0.7,true);\n}\nctx.restore();\n}\n\nif(Metamaps.Mouse.focusNodeCoords){\nctx.save();\nMetamaps.JIT.renderMidArrow(Metamaps.Mouse.focusNodeCoords,Metamaps.Mouse.newNodeCoords,13,false,canvas,0.3,true);\nMetamaps.JIT.renderMidArrow(Metamaps.Mouse.focusNodeCoords,Metamaps.Mouse.newNodeCoords,13,false,canvas,0.7,true);\nctx.restore();\n}\n\nif(Metamaps.Mouse.boxStartCoordinates&&Metamaps.Mouse.boxEndCoordinates){\nctx.save();\nctx.beginPath();\nctx.moveTo(Metamaps.Mouse.boxStartCoordinates.x,Metamaps.Mouse.boxStartCoordinates.y);\nctx.lineTo(Metamaps.Mouse.boxStartCoordinates.x,Metamaps.Mouse.boxEndCoordinates.y);\nctx.lineTo(Metamaps.Mouse.boxEndCoordinates.x,Metamaps.Mouse.boxEndCoordinates.y);\nctx.lineTo(Metamaps.Mouse.boxEndCoordinates.x,Metamaps.Mouse.boxStartCoordinates.y);\nctx.lineTo(Metamaps.Mouse.boxStartCoordinates.x,Metamaps.Mouse.boxStartCoordinates.y);\nctx.strokeStyle='black';\nctx.stroke();\nctx.restore();\n}\n//END METAMAPS CODE  \n\naGraph.eachNode(function(node){\nvar nodeAlpha=node.getData('alpha');\nnode.eachAdjacency(function(adj){\nvar nodeTo=adj.nodeTo;\nif(!!nodeTo.visited===T&&node.drawn&&nodeTo.drawn){\n!animating&&opt.onBeforePlotLine(adj);\nthat.plotLine(adj,canvas,animating);\n!animating&&opt.onAfterPlotLine(adj);\n}\n});\nif(node.drawn){\n!animating&&opt.onBeforePlotNode(node);\nthat.plotNode(node,canvas,animating);\n!animating&&opt.onAfterPlotNode(node);\n}\nif(!that.labelsHidden&&opt.withLabels){\nif(node.drawn&&nodeAlpha>=0.95){\nthat.labels.plotLabel(canvas,node,opt);\n}else{\nthat.labels.hideLabel(node,false);\n}\n}\nnode.visited=!T;\n});\n},\n\n/*\n      Plots a Subtree.\n   */\nplotTree:function plotTree(node,opt,animating){\nvar that=this,\nviz=this.viz,\ncanvas=viz.canvas,\nconfig=this.config,\nctx=canvas.getCtx();\nvar nodeAlpha=node.getData('alpha');\nnode.eachSubnode(function(elem){\nif(opt.plotSubtree(node,elem)&&elem.exist&&elem.drawn){\nvar adj=node.getAdjacency(elem.id);\n!animating&&opt.onBeforePlotLine(adj);\nthat.plotLine(adj,canvas,animating);\n!animating&&opt.onAfterPlotLine(adj);\nthat.plotTree(elem,opt,animating);\n}\n});\nif(node.drawn){\n!animating&&opt.onBeforePlotNode(node);\nthis.plotNode(node,canvas,animating);\n!animating&&opt.onAfterPlotNode(node);\nif(!opt.hideLabels&&opt.withLabels&&nodeAlpha>=0.95)\nthis.labels.plotLabel(canvas,node,opt);else\n\nthis.labels.hideLabel(node,false);\n}else{\nthis.labels.hideLabel(node,true);\n}\n},\n\n/*\n       Method: plotNode\n    \n       Plots a <Graph.Node>.\n\n       Parameters:\n       \n       node - (object) A <Graph.Node>.\n       canvas - (object) A <Canvas> element.\n\n    */\nplotNode:function plotNode(node,canvas,animating){\nvar f=node.getData('type'),\nctxObj=this.node.CanvasStyles;\nif(f!='none'){\nvar width=node.getData('lineWidth'),\ncolor=node.getData('color'),\nalpha=node.getData('alpha'),\nctx=canvas.getCtx();\nctx.save();\nctx.lineWidth=width;\nctx.fillStyle=ctx.strokeStyle=color;\nctx.globalAlpha=alpha;\n\nfor(var s in ctxObj){\nctx[s]=node.getCanvasStyle(s);\n}\n\nthis.nodeTypes[f].render.call(this,node,canvas,animating);\nctx.restore();\n}\n},\n\n/*\n       Method: plotLine\n    \n       Plots a <Graph.Adjacence>.\n\n       Parameters:\n\n       adj - (object) A <Graph.Adjacence>.\n       canvas - (object) A <Canvas> instance.\n\n    */\nplotLine:function plotLine(adj,canvas,animating){\nvar f=adj.getData('type'),\nctxObj=this.edge.CanvasStyles;\nif(f!='none'){\nvar width=adj.getData('lineWidth'),\ncolor=adj.getData('color'),\nctx=canvas.getCtx(),\nnodeFrom=adj.nodeFrom,\nnodeTo=adj.nodeTo;\n\nctx.save();\nctx.lineWidth=width;\nctx.fillStyle=ctx.strokeStyle=color;\nctx.globalAlpha=Math.min(nodeFrom.getData('alpha'),\nnodeTo.getData('alpha'),\nadj.getData('alpha'));\n\nfor(var s in ctxObj){\nctx[s]=adj.getCanvasStyle(s);\n}\n\nthis.edgeTypes[f].render.call(this,adj,canvas,animating);\nctx.restore();\n}\n}};\n\n\n\n/*\n  Object: Graph.Plot3D\n  \n  <Graph> 3D rendering and animation methods.\n  \n  Properties:\n  \n  nodeHelper - <NodeHelper> object.\n  edgeHelper - <EdgeHelper> object.\n\n*/\nGraph.Plot3D=$.merge(Graph.Plot,{\nInterpolator:{\n'linear':function linear(elem,props,delta){\nvar from=elem.startPos.getc(true);\nvar to=elem.endPos.getc(true);\nelem.pos.setc(this.compute(from.x,to.x,delta),\nthis.compute(from.y,to.y,delta),\nthis.compute(from.z,to.z,delta));\n}},\n\n\nplotNode:function plotNode(node,canvas){\nif(node.getData('type')=='none')return;\nthis.plotElement(node,canvas,{\ngetAlpha:function getAlpha(){\nreturn node.getData('alpha');\n}});\n\n},\n\nplotLine:function plotLine(adj,canvas){\nif(adj.getData('type')=='none')return;\nthis.plotElement(adj,canvas,{\ngetAlpha:function getAlpha(){\nreturn Math.min(adj.nodeFrom.getData('alpha'),\nadj.nodeTo.getData('alpha'),\nadj.getData('alpha'));\n}});\n\n},\n\nplotElement:function plotElement(elem,canvas,opt){\nvar gl=canvas.getCtx(),\nviewMatrix=new Matrix4(),\nlighting=canvas.config.Scene.Lighting,\nwcanvas=canvas.canvases[0],\nprogram=wcanvas.program,\ncamera=wcanvas.camera;\n\nif(!elem.geometry){\nelem.geometry=new O3D[elem.getData('type')]();\n}\nelem.geometry.update(elem);\nif(!elem.webGLVertexBuffer){\nvar vertices=[],\nfaces=[],\nnormals=[],\nvertexIndex=0,\ngeom=elem.geometry;\n\nfor(var i=0,vs=geom.vertices,fs=geom.faces,fsl=fs.length;i<fsl;i++){\nvar face=fs[i],\nv1=vs[face.a],\nv2=vs[face.b],\nv3=vs[face.c],\nv4=face.d?vs[face.d]:false,\nn=face.normal;\n\nvertices.push(v1.x,v1.y,v1.z);\nvertices.push(v2.x,v2.y,v2.z);\nvertices.push(v3.x,v3.y,v3.z);\nif(v4)vertices.push(v4.x,v4.y,v4.z);\n\nnormals.push(n.x,n.y,n.z);\nnormals.push(n.x,n.y,n.z);\nnormals.push(n.x,n.y,n.z);\nif(v4)normals.push(n.x,n.y,n.z);\n\nfaces.push(vertexIndex,vertexIndex+1,vertexIndex+2);\nif(v4){\nfaces.push(vertexIndex,vertexIndex+2,vertexIndex+3);\nvertexIndex+=4;\n}else{\nvertexIndex+=3;\n}\n}\n//create and store vertex data\nelem.webGLVertexBuffer=gl.createBuffer();\ngl.bindBuffer(gl.ARRAY_BUFFER,elem.webGLVertexBuffer);\ngl.bufferData(gl.ARRAY_BUFFER,new Float32Array(vertices),gl.STATIC_DRAW);\n//create and store faces index data\nelem.webGLFaceBuffer=gl.createBuffer();\ngl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER,elem.webGLFaceBuffer);\ngl.bufferData(gl.ELEMENT_ARRAY_BUFFER,new Uint16Array(faces),gl.STATIC_DRAW);\nelem.webGLFaceCount=faces.length;\n//calculate vertex normals and store them\nelem.webGLNormalBuffer=gl.createBuffer();\ngl.bindBuffer(gl.ARRAY_BUFFER,elem.webGLNormalBuffer);\ngl.bufferData(gl.ARRAY_BUFFER,new Float32Array(normals),gl.STATIC_DRAW);\n}\nviewMatrix.multiply(camera.matrix,elem.geometry.matrix);\n//send matrix data\ngl.uniformMatrix4fv(program.viewMatrix,false,viewMatrix.flatten());\ngl.uniformMatrix4fv(program.projectionMatrix,false,camera.projectionMatrix.flatten());\n//send normal matrix for lighting\nvar normalMatrix=Matrix4.makeInvert(viewMatrix);\nnormalMatrix.$transpose();\ngl.uniformMatrix4fv(program.normalMatrix,false,normalMatrix.flatten());\n//send color data\nvar color=$.hexToRgb(elem.getData('color'));\ncolor.push(opt.getAlpha());\ngl.uniform4f(program.color,color[0]/255,color[1]/255,color[2]/255,color[3]);\n//send lighting data\ngl.uniform1i(program.enableLighting,lighting.enable);\nif(lighting.enable){\n//set ambient light color\nif(lighting.ambient){\nvar acolor=lighting.ambient;\ngl.uniform3f(program.ambientColor,acolor[0],acolor[1],acolor[2]);\n}\n//set directional light\nif(lighting.directional){\nvar dir=lighting.directional,\ncolor=dir.color,\npos=dir.direction,\nvd=new Vector3(pos.x,pos.y,pos.z).normalize().$scale(-1);\ngl.uniform3f(program.lightingDirection,vd.x,vd.y,vd.z);\ngl.uniform3f(program.directionalColor,color[0],color[1],color[2]);\n}\n}\n//send vertices data\ngl.bindBuffer(gl.ARRAY_BUFFER,elem.webGLVertexBuffer);\ngl.vertexAttribPointer(program.position,3,gl.FLOAT,false,0,0);\n//send normals data\ngl.bindBuffer(gl.ARRAY_BUFFER,elem.webGLNormalBuffer);\ngl.vertexAttribPointer(program.normal,3,gl.FLOAT,false,0,0);\n//draw!\ngl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER,elem.webGLFaceBuffer);\ngl.drawElements(gl.TRIANGLES,elem.webGLFaceCount,gl.UNSIGNED_SHORT,0);\n}});\n\n\n\n/*\n * File: Graph.Label.js\n *\n*/\n\n/*\n   Object: Graph.Label\n\n   An interface for plotting/hiding/showing labels.\n\n   Description:\n\n   This is a generic interface for plotting/hiding/showing labels.\n   The <Graph.Label> interface is implemented in multiple ways to provide\n   different label types.\n\n   For example, the Graph.Label interface is implemented as <Graph.Label.HTML> to provide\n   HTML label elements. Also we provide the <Graph.Label.SVG> interface for SVG type labels. \n   The <Graph.Label.Native> interface implements these methods with the native Canvas text rendering functions.\n   \n   All subclasses (<Graph.Label.HTML>, <Graph.Label.SVG> and <Graph.Label.Native>) implement the method plotLabel.\n*/\n\nGraph.Label={};\n\n/*\n   Class: Graph.Label.Native\n\n   Implements labels natively, using the Canvas text API.\n*/\nGraph.Label.Native=new Class({\ninitialize:function initialize(viz){\nthis.viz=viz;\n},\n\n/*\n       Method: plotLabel\n\n       Plots a label for a given node.\n\n       Parameters:\n\n       canvas - (object) A <Canvas> instance.\n       node - (object) A <Graph.Node>.\n       controller - (object) A configuration object.\n       \n       Example:\n       \n       (start code js)\n       var viz = new $jit.Viz(options);\n       var node = viz.graph.getNode('nodeId');\n       viz.labels.plotLabel(viz.canvas, node, viz.config);\n       (end code)\n    */\nplotLabel:function plotLabel(canvas,node,controller){\n\nvar ctx=canvas.getCtx();\nvar pos=node.pos.getc(true);\n\nctx.font=node.getLabelData('style')+' '+node.getLabelData('size')+'px '+node.getLabelData('family');\nctx.textAlign=node.getLabelData('textAlign');\n// ORIGINAL CODE ctx.fillStyle = ctx.strokeStyle = node.getLabelData('color');\nctx.textBaseline=node.getLabelData('textBaseline');\n\n//START METAMAPS CODE\n\nvar arrayOfLabelLines=Metamaps.Util.splitLine(node.name,25).split('\\n');\n//render background\nctx.fillStyle=ctx.strokeStyle=Metamaps.Settings.colors.labels.background;\nctx.lineWidth=2;\nvar height=25*arrayOfLabelLines.length;//font size + margin\n\nvar index,lineWidths=[];\nfor(index=0;index<arrayOfLabelLines.length;++index){\nlineWidths.push(ctx.measureText(arrayOfLabelLines[index]).width);\n}\nvar width=Math.max.apply(null,lineWidths)+8;\nvar x=pos.x-width/2;\nvar y=pos.y+node.getData(\"height\")+5;\nvar radius=5;\n\nctx.beginPath();\nctx.moveTo(x+radius,y);\nctx.lineTo(x+width-radius,y);\nctx.quadraticCurveTo(x+width,y,x+width,y+radius);\nctx.lineTo(x+width,y+height-radius);\nctx.quadraticCurveTo(x+width,y+height,x+width-radius,y+height);\nctx.lineTo(x+radius,y+height);\nctx.quadraticCurveTo(x,y+height,x,y+height-radius);\nctx.lineTo(x,y+radius);\nctx.quadraticCurveTo(x,y,x+radius,y);\nctx.closePath();\nctx.fill();\n//ctx.stroke();\n\nctx.fillStyle=ctx.strokeStyle=node.getLabelData('color');\n\nthis.renderLabel(arrayOfLabelLines,canvas,node,controller);\n// END METAMAPS CODE\n// ORIGINAL CODE  this.renderLabel(canvas, node, controller);\n},\n\n/*\n       renderLabel\n\n       Does the actual rendering of the label in the canvas. The default\n       implementation renders the label close to the position of the node, this\n       method should be overriden to position the labels differently.\n\n       Parameters:\n\n       canvas - A <Canvas> instance.\n       node - A <Graph.Node>.\n       controller - A configuration object. See also <Hypertree>, <RGraph>, <ST>.\n    */\nrenderLabel:function renderLabel(customLabel,canvas,node,controller){\nvar ctx=canvas.getCtx();\nvar pos=node.pos.getc(true);\n//ctx.fillText(node.name, pos.x, pos.y + node.getData(\"height\") / 2);\n// START METAMAPS CODE\nvar index;\nfor(index=0;index<customLabel.length;++index){\nctx.fillText(customLabel[index],pos.x,pos.y+node.getData(\"height\")+23+25*index);\n}\n// END METAMAPS CODE\n},\n\nhideLabel:$.empty,\nhideLabels:$.empty});\n\n\n/*\n   Class: Graph.Label.DOM\n\n   Abstract Class implementing some DOM label methods.\n\n   Implemented by:\n\n   <Graph.Label.HTML> and <Graph.Label.SVG>.\n\n*/\nGraph.Label.DOM=new Class({\n//A flag value indicating if node labels are being displayed or not.\nlabelsHidden:false,\n//Label container\nlabelContainer:false,\n//Label elements hash.\nlabels:{},\n\n/*\n       Method: getLabelContainer\n\n       Lazy fetcher for the label container.\n\n       Returns:\n\n       The label container DOM element.\n\n       Example:\n\n      (start code js)\n        var viz = new $jit.Viz(options);\n        var labelContainer = viz.labels.getLabelContainer();\n        alert(labelContainer.innerHTML);\n      (end code)\n    */\ngetLabelContainer:function getLabelContainer(){\nreturn this.labelContainer?\nthis.labelContainer:\nthis.labelContainer=document.getElementById(this.viz.config.labelContainer);\n},\n\n/*\n       Method: getLabel\n\n       Lazy fetcher for the label element.\n\n       Parameters:\n\n       id - (string) The label id (which is also a <Graph.Node> id).\n\n       Returns:\n\n       The label element.\n\n       Example:\n\n      (start code js)\n        var viz = new $jit.Viz(options);\n        var label = viz.labels.getLabel('someid');\n        alert(label.innerHTML);\n      (end code)\n\n    */\ngetLabel:function getLabel(id){\nreturn id in this.labels&&this.labels[id]!=null?\nthis.labels[id]:\nthis.labels[id]=document.getElementById(id);\n},\n\n/*\n       Method: hideLabels\n\n       Hides all labels (by hiding the label container).\n\n       Parameters:\n\n       hide - (boolean) A boolean value indicating if the label container must be hidden or not.\n\n       Example:\n       (start code js)\n        var viz = new $jit.Viz(options);\n        rg.labels.hideLabels(true);\n       (end code)\n\n    */\nhideLabels:function hideLabels(hide){\nvar container=this.getLabelContainer();\nif(hide)\ncontainer.style.display='none';else\n\ncontainer.style.display='';\nthis.labelsHidden=hide;\n},\n\n/*\n       Method: clearLabels\n\n       Clears the label container.\n\n       Useful when using a new visualization with the same canvas element/widget.\n\n       Parameters:\n\n       force - (boolean) Forces deletion of all labels.\n\n       Example:\n       (start code js)\n        var viz = new $jit.Viz(options);\n        viz.labels.clearLabels();\n        (end code)\n    */\nclearLabels:function clearLabels(force){\nfor(var id in this.labels){\nif(force||!this.viz.graph.hasNode(id)){\nthis.disposeLabel(id);\ndelete this.labels[id];\n}\n}\n},\n\n/*\n       Method: disposeLabel\n\n       Removes a label.\n\n       Parameters:\n\n       id - (string) A label id (which generally is also a <Graph.Node> id).\n\n       Example:\n       (start code js)\n        var viz = new $jit.Viz(options);\n        viz.labels.disposeLabel('labelid');\n       (end code)\n    */\ndisposeLabel:function disposeLabel(id){\nvar elem=this.getLabel(id);\nif(elem&&elem.parentNode){\nelem.parentNode.removeChild(elem);\n}\n},\n\n/*\n       Method: hideLabel\n\n       Hides the corresponding <Graph.Node> label.\n\n       Parameters:\n\n       node - (object) A <Graph.Node>. Can also be an array of <Graph.Nodes>.\n       show - (boolean) If *true*, nodes will be shown. Otherwise nodes will be hidden.\n\n       Example:\n       (start code js)\n        var rg = new $jit.Viz(options);\n        viz.labels.hideLabel(viz.graph.getNode('someid'), false);\n       (end code)\n    */\nhideLabel:function hideLabel(node,show){\nnode=$.splat(node);\nvar st=show?\"\":\"none\",lab,that=this;\n$.each(node,function(n){\nvar lab=that.getLabel(n.id);\nif(lab){\nlab.style.display=st;\n}\n});\n},\n\n/*\n       fitsInCanvas\n\n       Returns _true_ or _false_ if the label for the node is contained in the canvas dom element or not.\n\n       Parameters:\n\n       pos - A <Complex> instance (I'm doing duck typing here so any object with _x_ and _y_ parameters will do).\n       canvas - A <Canvas> instance.\n\n       Returns:\n\n       A boolean value specifying if the label is contained in the <Canvas> DOM element or not.\n\n    */\nfitsInCanvas:function fitsInCanvas(pos,canvas){\nvar size=canvas.getSize();\nif(pos.x>=size.width||pos.x<0||\npos.y>=size.height||pos.y<0)return false;\nreturn true;\n}});\n\n\n/*\n   Class: Graph.Label.HTML\n\n   Implements HTML labels.\n\n   Extends:\n\n   All <Graph.Label.DOM> methods.\n\n*/\nGraph.Label.HTML=new Class({\nImplements:Graph.Label.DOM,\n\n/*\n       Method: plotLabel\n\n       Plots a label for a given node.\n\n       Parameters:\n\n       canvas - (object) A <Canvas> instance.\n       node - (object) A <Graph.Node>.\n       controller - (object) A configuration object.\n       \n      Example:\n       \n       (start code js)\n       var viz = new $jit.Viz(options);\n       var node = viz.graph.getNode('nodeId');\n       viz.labels.plotLabel(viz.canvas, node, viz.config);\n       (end code)\n\n\n    */\nplotLabel:function plotLabel(canvas,node,controller){\nvar id=node.id,tag=this.getLabel(id);\n\nif(!tag&&!(tag=document.getElementById(id))){\ntag=document.createElement('div');\nvar container=this.getLabelContainer();\ntag.id=id;\ntag.className='node';\ntag.style.position='absolute';\ncontroller.onCreateLabel(tag,node);\ncontainer.appendChild(tag);\nthis.labels[node.id]=tag;\n}\n\nthis.placeLabel(tag,node,controller);\n}});\n\n\n/*\n   Class: Graph.Label.SVG\n\n   Implements SVG labels.\n\n   Extends:\n\n   All <Graph.Label.DOM> methods.\n*/\nGraph.Label.SVG=new Class({\nImplements:Graph.Label.DOM,\n\n/*\n       Method: plotLabel\n\n       Plots a label for a given node.\n\n       Parameters:\n\n       canvas - (object) A <Canvas> instance.\n       node - (object) A <Graph.Node>.\n       controller - (object) A configuration object.\n       \n       Example:\n       \n       (start code js)\n       var viz = new $jit.Viz(options);\n       var node = viz.graph.getNode('nodeId');\n       viz.labels.plotLabel(viz.canvas, node, viz.config);\n       (end code)\n\n\n    */\nplotLabel:function plotLabel(canvas,node,controller){\nvar id=node.id,tag=this.getLabel(id);\nif(!tag&&!(tag=document.getElementById(id))){\nvar ns='http://www.w3.org/2000/svg';\ntag=document.createElementNS(ns,'svg:text');\nvar tspan=document.createElementNS(ns,'svg:tspan');\ntag.appendChild(tspan);\nvar container=this.getLabelContainer();\ntag.setAttribute('id',id);\ntag.setAttribute('class','node');\ncontainer.appendChild(tag);\ncontroller.onCreateLabel(tag,node);\nthis.labels[node.id]=tag;\n}\nthis.placeLabel(tag,node,controller);\n}});\n\n\n\n\n/*\n * File: Loader.js\n * \n */\n\n/*\n   Object: Loader\n\n   Provides methods for loading and serving JSON data.\n*/\nvar Loader={\nconstruct:function construct(json){\nvar isGraph=$.type(json)=='array';\nvar ans=new Graph(this.graphOptions,this.config.Node,this.config.Edge,this.config.Label);\nif(!isGraph)\n//make tree\n(function(ans,json){\nans.addNode(json);\nif(json.children){\nfor(var i=0,ch=json.children;i<ch.length;i++){\nans.addAdjacence(json,ch[i]);\narguments.callee(ans,ch[i]);\n}\n}\n})(ans,json);else\n\n//make graph\n(function(ans,json){\nvar getNode=function getNode(id){\nfor(var i=0,l=json.length;i<l;i++){\nif(json[i].id==id){\nreturn json[i];\n}\n}\n// The node was not defined in the JSON\n// Let's create it\nvar newNode={\n\"id\":id,\n\"name\":id};\n\nreturn ans.addNode(newNode);\n};\n\nfor(var i=0,l=json.length;i<l;i++){\nans.addNode(json[i]);\nvar adj=json[i].adjacencies;\nif(adj){\nfor(var j=0,lj=adj.length;j<lj;j++){\nvar node=adj[j],data={};\nif(typeof adj[j]!='string'){\ndata=$.merge(node.data,{});\nnode=node.nodeTo;\n}\nans.addAdjacence(json[i],getNode(node),data);\n}\n}\n}\n})(ans,json);\n\nreturn ans;\n},\n\n/*\n     Method: loadJSON\n    \n     Loads a JSON structure to the visualization. The JSON structure can be a JSON *tree* or *graph* structure.\n     \n      A JSON tree or graph structure consists of nodes, each having as properties\n       \n       id - (string) A unique identifier for the node\n       name - (string) A node's name\n       data - (object) The data optional property contains a hash (i.e {}) \n       where you can store all the information you want about this node.\n        \n      For JSON *Tree* structures, there's an extra optional property *children* of type Array which contains the node's children.\n      \n      Example:\n\n      (start code js)\n        var json = {  \n          \"id\": \"aUniqueIdentifier\",  \n          \"name\": \"usually a nodes name\",  \n          \"data\": {\n            \"some key\": \"some value\",\n            \"some other key\": \"some other value\"\n           },  \n          \"children\": [ *other nodes or empty* ]  \n        };  \n      (end code)\n        \n        JSON *Graph* structures consist of an array of nodes, each specifying the nodes to which the current node is connected. \n        For JSON *Graph* structures, the *children* property is replaced by the *adjacencies* property.\n        \n        There are two types of *Graph* structures, *simple* and *extended* graph structures.\n        \n        For *simple* Graph structures, the adjacencies property contains an array of strings, each specifying the \n        id of the node connected to the main node.\n        \n        Example:\n        \n        (start code js)\n        var json = [  \n          {  \n            \"id\": \"aUniqueIdentifier\",  \n            \"name\": \"usually a nodes name\",  \n            \"data\": {\n              \"some key\": \"some value\",\n              \"some other key\": \"some other value\"\n             },  \n            \"adjacencies\": [\"anotherUniqueIdentifier\", \"yetAnotherUniqueIdentifier\", 'etc']  \n          },\n\n          'other nodes go here...' \n        ];          \n        (end code)\n        \n        For *extended Graph structures*, the adjacencies property contains an array of Adjacency objects that have as properties\n        \n        nodeTo - (string) The other node connected by this adjacency.\n        data - (object) A data property, where we can store custom key/value information.\n        \n        Example:\n        \n        (start code js)\n        var json = [  \n          {  \n            \"id\": \"aUniqueIdentifier\",  \n            \"name\": \"usually a nodes name\",  \n            \"data\": {\n              \"some key\": \"some value\",\n              \"some other key\": \"some other value\"\n             },  \n            \"adjacencies\": [  \n            {  \n              nodeTo:\"aNodeId\",  \n              data: {} //put whatever you want here  \n            },\n            'other adjacencies go here...'  \n          },\n\n          'other nodes go here...' \n        ];          \n        (end code)\n       \n       About the data property:\n       \n       As described before, you can store custom data in the *data* property of JSON *nodes* and *adjacencies*. \n       You can use almost any string as key for the data object. Some keys though are reserved by the toolkit, and \n       have special meanings. This is the case for keys starting with a dollar sign, for example, *$width*.\n       \n       For JSON *node* objects, adding dollar prefixed properties that match the names of the options defined in \n       <Options.Node> will override the general value for that option with that particular value. For this to work \n       however, you do have to set *overridable = true* in <Options.Node>.\n       \n       The same thing is true for JSON adjacencies. Dollar prefixed data properties will alter values set in <Options.Edge> \n       if <Options.Edge> has *overridable = true*.\n       \n       When loading JSON data into TreeMaps, the *data* property must contain a value for the *$area* key, \n       since this is the value which will be taken into account when creating the layout. \n       The same thing goes for the *$color* parameter.\n       \n       In JSON Nodes you can use also *$label-* prefixed properties to refer to <Options.Label> properties. For example, \n       *$label-size* will refer to <Options.Label> size property. Also, in JSON nodes and adjacencies you can set \n       canvas specific properties individually by using the *$canvas-* prefix. For example, *$canvas-shadowBlur* will refer \n       to the *shadowBlur* property.\n       \n       These properties can also be accessed after loading the JSON data from <Graph.Nodes> and <Graph.Adjacences> \n       by using <Accessors>. For more information take a look at the <Graph> and <Accessors> documentation.\n       \n       Finally, these properties can also be used to create advanced animations like with <Options.NodeStyles>. For more \n       information about creating animations please take a look at the <Graph.Plot> and <Graph.Plot.animate> documentation.\n       \n       loadJSON Parameters:\n    \n        json - A JSON Tree or Graph structure.\n        i - For Graph structures only. Sets the indexed node as root for the visualization.\n\n    */\nloadJSON:function loadJSON(json,i){\nthis.json=json;\n//if they're canvas labels erase them.\nif(this.labels&&this.labels.clearLabels){\nthis.labels.clearLabels(true);\n}\nthis.graph=this.construct(json);\nif($.type(json)!='array'){\nthis.root=json.id;\n}else{\nthis.root=json[i?i:0].id;\n}\n},\n\n/*\n      Method: toJSON\n   \n      Returns a JSON tree/graph structure from the visualization's <Graph>. \n      See <Loader.loadJSON> for the graph formats available.\n      \n      See also:\n      \n      <Loader.loadJSON>\n      \n      Parameters:\n      \n      type - (string) Default's \"tree\". The type of the JSON structure to be returned. \n      Possible options are \"tree\" or \"graph\".\n    */\ntoJSON:function toJSON(type){\ntype=type||\"tree\";\nif(type=='tree'){\nvar ans={};\nvar rootNode=this.graph.getNode(this.root);\nvar ans=function recTree(node){\nvar ans={};\nans.id=node.id;\nans.name=node.name;\nans.data=node.data;\nvar ch=[];\nnode.eachSubnode(function(n){\nch.push(recTree(n));\n});\nans.children=ch;\nreturn ans;\n}(rootNode);\nreturn ans;\n}else{\nvar ans=[];\nvar T=!!this.graph.getNode(this.root).visited;\nthis.graph.eachNode(function(node){\nvar ansNode={};\nansNode.id=node.id;\nansNode.name=node.name;\nansNode.data=node.data;\nvar adjs=[];\nnode.eachAdjacency(function(adj){\nvar nodeTo=adj.nodeTo;\nif(!!nodeTo.visited===T){\nvar ansAdj={};\nansAdj.nodeTo=nodeTo.id;\nansAdj.data=adj.data;\nadjs.push(ansAdj);\n}\n});\nansNode.adjacencies=adjs;\nans.push(ansNode);\nnode.visited=!T;\n});\nreturn ans;\n}\n}};\n\n\n\n\n/*\n * File: Layouts.js\n * \n * Implements base Tree and Graph layouts.\n *\n * Description:\n *\n * Implements base Tree and Graph layouts like Radial, Tree, etc.\n * \n */\n\n/*\n * Object: Layouts\n * \n * Parent object for common layouts.\n *\n */\nvar Layouts=$jit.Layouts={};\n\n\n//Some util shared layout functions are defined here.\nvar NodeDim={\nlabel:null,\n\ncompute:function compute(graph,prop,opt){\nthis.initializeLabel(opt);\nvar label=this.label,style=label.style;\ngraph.eachNode(function(n){\nvar autoWidth=n.getData('autoWidth'),\nautoHeight=n.getData('autoHeight');\nif(autoWidth||autoHeight){\n//delete dimensions since these are\n//going to be overridden now.\ndelete n.data.$width;\ndelete n.data.$height;\ndelete n.data.$dim;\n\nvar width=n.getData('width'),\nheight=n.getData('height');\n//reset label dimensions\nstyle.width=autoWidth?'auto':width+'px';\nstyle.height=autoHeight?'auto':height+'px';\n\n//TODO(nico) should let the user choose what to insert here.\nlabel.innerHTML=n.name;\n\nvar offsetWidth=label.offsetWidth,\noffsetHeight=label.offsetHeight;\nvar type=n.getData('type');\nif($.indexOf(['circle','square','triangle','star'],type)===-1){\nn.setData('width',offsetWidth);\nn.setData('height',offsetHeight);\n}else{\nvar dim=offsetWidth>offsetHeight?offsetWidth:offsetHeight;\nn.setData('width',dim);\nn.setData('height',dim);\nn.setData('dim',dim);\n}\n}\n});\n},\n\ninitializeLabel:function initializeLabel(opt){\nif(!this.label){\nthis.label=document.createElement('div');\ndocument.body.appendChild(this.label);\n}\nthis.setLabelStyles(opt);\n},\n\nsetLabelStyles:function setLabelStyles(opt){\n$.extend(this.label.style,{\n'visibility':'hidden',\n'position':'absolute',\n'width':'auto',\n'height':'auto'});\n\nthis.label.className='jit-autoadjust-label';\n}};\n\n\n\n/*\n * Class: Layouts.Radial\n * \n * Implements a Radial Layout.\n * \n * Implemented By:\n * \n * <RGraph>, <Hypertree>\n * \n */\nLayouts.Radial=new Class({\n\n/*\n   * Method: compute\n   * \n   * Computes nodes' positions.\n   * \n   * Parameters:\n   * \n   * property - _optional_ A <Graph.Node> position property to store the new\n   * positions. Possible values are 'pos', 'end' or 'start'.\n   * \n   */\ncompute:function compute(property){\nvar prop=$.splat(property||['current','start','end']);\nNodeDim.compute(this.graph,prop,this.config);\nthis.graph.computeLevels(this.root,0,\"ignore\");\nvar lengthFunc=this.createLevelDistanceFunc();\nthis.computeAngularWidths(prop);\nthis.computePositions(prop,lengthFunc);\n},\n\n/*\n   * computePositions\n   * \n   * Performs the main algorithm for computing node positions.\n   */\ncomputePositions:function computePositions(property,getLength){\nvar propArray=property;\nvar graph=this.graph;\nvar root=graph.getNode(this.root);\nvar parent=this.parent;\nvar config=this.config;\n\nfor(var i=0,l=propArray.length;i<l;i++){\nvar pi=propArray[i];\nroot.setPos($P(0,0),pi);\nroot.setData('span',Math.PI*2,pi);\n}\n\nroot.angleSpan={\nbegin:0,\nend:2*Math.PI};\n\n\ngraph.eachBFS(this.root,function(elem){\nvar angleSpan=elem.angleSpan.end-elem.angleSpan.begin;\nvar angleInit=elem.angleSpan.begin;\nvar len=getLength(elem);\n//Calculate the sum of all angular widths\nvar totalAngularWidths=0,subnodes=[],maxDim={};\nelem.eachSubnode(function(sib){\ntotalAngularWidths+=sib._treeAngularWidth;\n//get max dim\nfor(var i=0,l=propArray.length;i<l;i++){\nvar pi=propArray[i],dim=sib.getData('dim',pi);\nmaxDim[pi]=pi in maxDim?dim>maxDim[pi]?dim:maxDim[pi]:dim;\n}\nsubnodes.push(sib);\n},\"ignore\");\n//Maintain children order\n//Second constraint for <http://bailando.sims.berkeley.edu/papers/infovis01.htm>\nif(parent&&parent.id==elem.id&&subnodes.length>0&&\nsubnodes[0].dist){\nsubnodes.sort(function(a,b){\nreturn(a.dist>=b.dist)-(a.dist<=b.dist);\n});\n}\n//Calculate nodes positions.\nfor(var k=0,ls=subnodes.length;k<ls;k++){\nvar child=subnodes[k];\nif(!child._flag){\nvar angleProportion=child._treeAngularWidth/totalAngularWidths*angleSpan;\nvar theta=angleInit+angleProportion/2;\n\nfor(var i=0,l=propArray.length;i<l;i++){\nvar pi=propArray[i];\nchild.setPos($P(theta,len),pi);\nchild.setData('span',angleProportion,pi);\nchild.setData('dim-quotient',child.getData('dim',pi)/maxDim[pi],pi);\n}\n\nchild.angleSpan={\nbegin:angleInit,\nend:angleInit+angleProportion};\n\nangleInit+=angleProportion;\n}\n}\n},\"ignore\");\n},\n\n/*\n   * Method: setAngularWidthForNodes\n   * \n   * Sets nodes angular widths.\n   */\nsetAngularWidthForNodes:function setAngularWidthForNodes(prop){\nthis.graph.eachBFS(this.root,function(elem,i){\nvar diamValue=elem.getData('angularWidth',prop[0])||5;\nelem._angularWidth=diamValue/i;\n},\"ignore\");\n},\n\n/*\n   * Method: setSubtreesAngularWidth\n   * \n   * Sets subtrees angular widths.\n   */\nsetSubtreesAngularWidth:function setSubtreesAngularWidth(){\nvar that=this;\nthis.graph.eachNode(function(elem){\nthat.setSubtreeAngularWidth(elem);\n},\"ignore\");\n},\n\n/*\n   * Method: setSubtreeAngularWidth\n   * \n   * Sets the angular width for a subtree.\n   */\nsetSubtreeAngularWidth:function setSubtreeAngularWidth(elem){\nvar that=this,nodeAW=elem._angularWidth,sumAW=0;\nelem.eachSubnode(function(child){\nthat.setSubtreeAngularWidth(child);\nsumAW+=child._treeAngularWidth;\n},\"ignore\");\nelem._treeAngularWidth=Math.max(nodeAW,sumAW);\n},\n\n/*\n   * Method: computeAngularWidths\n   * \n   * Computes nodes and subtrees angular widths.\n   */\ncomputeAngularWidths:function computeAngularWidths(prop){\nthis.setAngularWidthForNodes(prop);\nthis.setSubtreesAngularWidth();\n}});\n\n\n\n\n/*\n * File: RGraph.js\n *\n */\n\n/*\n   Class: RGraph\n   \n   A radial graph visualization with advanced animations.\n   \n   Inspired by:\n \n   Animated Exploration of Dynamic Graphs with Radial Layout (Ka-Ping Yee, Danyel Fisher, Rachna Dhamija, Marti Hearst) <http://bailando.sims.berkeley.edu/papers/infovis01.htm>\n   \n   Note:\n   \n   This visualization was built and engineered from scratch, taking only the paper as inspiration, and only shares some features with the visualization described in the paper.\n   \n  Implements:\n  \n  All <Loader> methods\n  \n   Constructor Options:\n   \n   Inherits options from\n   \n   - <Options.Canvas>\n   - <Options.Controller>\n   - <Options.Node>\n   - <Options.Edge>\n   - <Options.Label>\n   - <Options.Events>\n   - <Options.Tips>\n   - <Options.NodeStyles>\n   - <Options.Navigation>\n   \n   Additionally, there are other parameters and some default values changed\n   \n   interpolation - (string) Default's *linear*. Describes the way nodes are interpolated. Possible values are 'linear' and 'polar'.\n   levelDistance - (number) Default's *100*. The distance between levels of the tree. \n     \n   Instance Properties:\n\n   canvas - Access a <Canvas> instance.\n   graph - Access a <Graph> instance.\n   op - Access a <RGraph.Op> instance.\n   fx - Access a <RGraph.Plot> instance.\n   labels - Access a <RGraph.Label> interface implementation.   \n*/\n\n$jit.RGraph=new Class({\n\nImplements:[\nLoader,Extras,Layouts.Radial],\n\n\ninitialize:function initialize(controller){\nvar $RGraph=$jit.RGraph;\n\nvar config={\ninterpolation:'linear',\nlevelDistance:100};\n\n\nthis.controller=this.config=$.merge(Options(\"Canvas\",\"Node\",\"Edge\",\n\"Fx\",\"Controller\",\"Tips\",\"NodeStyles\",\"Events\",\"Navigation\",\"Label\"),config,controller);\n\nvar canvasConfig=this.config;\nif(canvasConfig.useCanvas){\nthis.canvas=canvasConfig.useCanvas;\nthis.config.labelContainer=this.canvas.id+'-label';\n}else{\nif(canvasConfig.background){\ncanvasConfig.background=$.merge({\ntype:'Circles'},\ncanvasConfig.background);\n}\nthis.canvas=new Canvas(this,canvasConfig);\nthis.config.labelContainer=(typeof canvasConfig.injectInto=='string'?canvasConfig.injectInto:canvasConfig.injectInto.id)+'-label';\n}\n\nthis.graphOptions={\n'klass':Polar,\n'Node':{\n'selected':false,\n'exist':true,\n'drawn':true}};\n\n\nthis.graph=new Graph(this.graphOptions,this.config.Node,\nthis.config.Edge);\nthis.labels=new $RGraph.Label[canvasConfig.Label.type](this);\nthis.fx=new $RGraph.Plot(this,$RGraph);\nthis.op=new $RGraph.Op(this);\nthis.json=null;\nthis.root=null;\nthis.busy=false;\nthis.parent=false;\n// initialize extras\nthis.initializeExtras();\n},\n\n/* \n  \n    createLevelDistanceFunc \n  \n    Returns the levelDistance function used for calculating a node distance \n    to its origin. This function returns a function that is computed \n    per level and not per node, such that all nodes with the same depth will have the \n    same distance to the origin. The resulting function gets the \n    parent node as parameter and returns a float.\n\n   */\ncreateLevelDistanceFunc:function createLevelDistanceFunc(){\nvar ld=this.config.levelDistance;\nreturn function(elem){\nreturn(elem._depth+1)*ld;\n};\n},\n\n/* \n     Method: refresh \n     \n     Computes positions and plots the tree.\n\n   */\nrefresh:function refresh(){\n\n// START METAMAPS CODE\n// this.compute();\n// END METAMAPS CODE\n// ORIGINAL CODE: this.compute();\nthis.plot();\n},\n\nreposition:function reposition(){\nthis.compute('end');\n},\n\n/*\n   Method: plot\n  \n   Plots the RGraph. This is a shortcut to *fx.plot*.\n  */\nplot:function plot(){\nthis.fx.plot();\n},\n/*\n   getNodeAndParentAngle\n  \n   Returns the _parent_ of the given node, also calculating its angle span.\n  */\ngetNodeAndParentAngle:function getNodeAndParentAngle(id){\nvar theta=false;\nvar n=this.graph.getNode(id);\nvar ps=n.getParents();\nvar p=ps.length>0?ps[0]:false;\nif(p){\nvar posParent=p.pos.getc(),posChild=n.pos.getc();\nvar newPos=posParent.add(posChild.scale(-1));\ntheta=Math.atan2(newPos.y,newPos.x);\nif(theta<0)\ntheta+=2*Math.PI;\n}\nreturn{\nparent:p,\ntheta:theta};\n\n},\n/*\n   tagChildren\n  \n   Enumerates the children in order to maintain child ordering (second constraint of the paper).\n  */\ntagChildren:function tagChildren(par,id){\nif(par.angleSpan){\nvar adjs=[];\npar.eachAdjacency(function(elem){\nadjs.push(elem.nodeTo);\n},\"ignore\");\nvar len=adjs.length;\nfor(var i=0;i<len&&id!=adjs[i].id;i++){}\n\nfor(var j=(i+1)%len,k=0;id!=adjs[j].id;j=(j+1)%len){\nadjs[j].dist=k++;\n}\n}\n},\n/* \n  Method: onClick \n  \n  Animates the <RGraph> to center the node specified by *id*.\n\n   Parameters:\n\n   id - A <Graph.Node> id.\n   opt - (optional|object) An object containing some extra properties described below\n   hideLabels - (boolean) Default's *true*. Hide labels when performing the animation.\n\n   Example:\n\n   (start code js)\n     rgraph.onClick('someid');\n     //or also...\n     rgraph.onClick('someid', {\n      hideLabels: false\n     });\n    (end code)\n    \n  */\nonClick:function onClick(id,opt){\nif(this.root!=id&&!this.busy){\nthis.busy=true;\nthis.root=id;\nvar that=this;\nthis.controller.onBeforeCompute(this.graph.getNode(id));\nvar obj=this.getNodeAndParentAngle(id);\n\n// second constraint\nthis.tagChildren(obj.parent,id);\nthis.parent=obj.parent;\nthis.compute('end');\n\n// first constraint\nvar thetaDiff=obj.theta-obj.parent.endPos.theta;\nthis.graph.eachNode(function(elem){\nelem.endPos.set(elem.endPos.getp().add($P(thetaDiff,0)));\n});\n\nvar mode=this.config.interpolation;\nopt=$.merge({\nonComplete:$.empty},\nopt||{});\n\nthis.fx.animate($.merge({\nhideLabels:true,\nmodes:[\nmode]},\n\nopt,{\nonComplete:function onComplete(){\nthat.busy=false;\nopt.onComplete();\n}}));\n\n}\n}});\n\n\n$jit.RGraph.$extend=true;\n\n(function(RGraph){\n\n/*\n     Class: RGraph.Op\n     \n     Custom extension of <Graph.Op>.\n\n     Extends:\n\n     All <Graph.Op> methods\n     \n     See also:\n     \n     <Graph.Op>\n\n  */\nRGraph.Op=new Class({\n\nImplements:Graph.Op});\n\n\n\n/*\n     Class: RGraph.Plot\n    \n    Custom extension of <Graph.Plot>.\n  \n    Extends:\n  \n    All <Graph.Plot> methods\n    \n    See also:\n    \n    <Graph.Plot>\n  \n  */\nRGraph.Plot=new Class({\n\nImplements:Graph.Plot});\n\n\n\n/*\n    Object: RGraph.Label\n\n    Custom extension of <Graph.Label>. \n    Contains custom <Graph.Label.SVG>, <Graph.Label.HTML> and <Graph.Label.Native> extensions.\n  \n    Extends:\n  \n    All <Graph.Label> methods and subclasses.\n  \n    See also:\n  \n    <Graph.Label>, <Graph.Label.Native>, <Graph.Label.HTML>, <Graph.Label.SVG>.\n  \n   */\nRGraph.Label={};\n\n/*\n     RGraph.Label.Native\n\n     Custom extension of <Graph.Label.Native>.\n\n     Extends:\n\n     All <Graph.Label.Native> methods\n\n     See also:\n\n     <Graph.Label.Native>\n\n  */\nRGraph.Label.Native=new Class({\nImplements:Graph.Label.Native});\n\n\n/*\n     RGraph.Label.SVG\n    \n    Custom extension of <Graph.Label.SVG>.\n  \n    Extends:\n  \n    All <Graph.Label.SVG> methods\n  \n    See also:\n  \n    <Graph.Label.SVG>\n  \n  */\nRGraph.Label.SVG=new Class({\nImplements:Graph.Label.SVG,\n\ninitialize:function initialize(viz){\nthis.viz=viz;\n},\n\n/* \n       placeLabel\n\n       Overrides abstract method placeLabel in <Graph.Plot>.\n\n       Parameters:\n\n       tag - A DOM label element.\n       node - A <Graph.Node>.\n       controller - A configuration/controller object passed to the visualization.\n      \n     */\nplaceLabel:function placeLabel(tag,node,controller){\nvar pos=node.pos.getc(true),\ncanvas=this.viz.canvas,\nox=canvas.translateOffsetX,\noy=canvas.translateOffsetY,\nsx=canvas.scaleOffsetX,\nsy=canvas.scaleOffsetY,\nradius=canvas.getSize();\nvar labelPos={\nx:Math.round(pos.x*sx+ox+radius.width/2),\ny:Math.round(pos.y*sy+oy+radius.height/2)};\n\ntag.setAttribute('x',labelPos.x);\ntag.setAttribute('y',labelPos.y);\n\ncontroller.onPlaceLabel(tag,node);\n}});\n\n\n/*\n     RGraph.Label.HTML\n\n     Custom extension of <Graph.Label.HTML>.\n\n     Extends:\n\n     All <Graph.Label.HTML> methods.\n\n     See also:\n\n     <Graph.Label.HTML>\n\n  */\nRGraph.Label.HTML=new Class({\nImplements:Graph.Label.HTML,\n\ninitialize:function initialize(viz){\nthis.viz=viz;\n},\n/* \n       placeLabel\n\n       Overrides abstract method placeLabel in <Graph.Plot>.\n\n       Parameters:\n\n       tag - A DOM label element.\n       node - A <Graph.Node>.\n       controller - A configuration/controller object passed to the visualization.\n      \n     */\nplaceLabel:function placeLabel(tag,node,controller){\nvar pos=node.pos.getc(true),\ncanvas=this.viz.canvas,\nox=canvas.translateOffsetX,\noy=canvas.translateOffsetY,\nsx=canvas.scaleOffsetX,\nsy=canvas.scaleOffsetY,\nradius=canvas.getSize();\nvar labelPos={\nx:Math.round(pos.x*sx+ox+radius.width/2),\ny:Math.round(pos.y*sy+oy+radius.height/2)};\n\n\nvar style=tag.style;\nstyle.left=labelPos.x+'px';\nstyle.top=labelPos.y+'px';\nstyle.display=this.fitsInCanvas(labelPos,canvas)?'':'none';\n\ncontroller.onPlaceLabel(tag,node);\n}});\n\n\n/*\n    Class: RGraph.Plot.NodeTypes\n\n    This class contains a list of <Graph.Node> built-in types. \n    Node types implemented are 'none', 'circle', 'triangle', 'rectangle', 'star', 'ellipse' and 'square'.\n\n    You can add your custom node types, customizing your visualization to the extreme.\n\n    Example:\n\n    (start code js)\n      RGraph.Plot.NodeTypes.implement({\n        'mySpecialType': {\n          'render': function(node, canvas) {\n            //print your custom node to canvas\n          },\n          //optional\n          'contains': function(node, pos) {\n            //return true if pos is inside the node or false otherwise\n          }\n        }\n      });\n    (end code)\n\n  */\nRGraph.Plot.NodeTypes=new Class({\n'none':{\n'render':$.empty,\n'contains':$.lambda(false)},\n\n'circle':{\n'render':function render(node,canvas){\nvar pos=node.pos.getc(true),\ndim=node.getData('dim');\nthis.nodeHelper.circle.render('fill',pos,dim,canvas);\n},\n'contains':function contains(node,pos){\nvar npos=node.pos.getc(true),\ndim=node.getData('dim');\nreturn this.nodeHelper.circle.contains(npos,pos,dim);\n}},\n\n'ellipse':{\n'render':function render(node,canvas){\nvar pos=node.pos.getc(true),\nwidth=node.getData('width'),\nheight=node.getData('height');\nthis.nodeHelper.ellipse.render('fill',pos,width,height,canvas);\n},\n'contains':function contains(node,pos){\nvar npos=node.pos.getc(true),\nwidth=node.getData('width'),\nheight=node.getData('height');\nreturn this.nodeHelper.ellipse.contains(npos,pos,width,height);\n}},\n\n'square':{\n'render':function render(node,canvas){\nvar pos=node.pos.getc(true),\ndim=node.getData('dim');\nthis.nodeHelper.square.render('fill',pos,dim,canvas);\n},\n'contains':function contains(node,pos){\nvar npos=node.pos.getc(true),\ndim=node.getData('dim');\nreturn this.nodeHelper.square.contains(npos,pos,dim);\n}},\n\n'rectangle':{\n'render':function render(node,canvas){\nvar pos=node.pos.getc(true),\nwidth=node.getData('width'),\nheight=node.getData('height');\nthis.nodeHelper.rectangle.render('fill',pos,width,height,canvas);\n},\n'contains':function contains(node,pos){\nvar npos=node.pos.getc(true),\nwidth=node.getData('width'),\nheight=node.getData('height');\nreturn this.nodeHelper.rectangle.contains(npos,pos,width,height);\n}},\n\n'triangle':{\n'render':function render(node,canvas){\nvar pos=node.pos.getc(true),\ndim=node.getData('dim');\nthis.nodeHelper.triangle.render('fill',pos,dim,canvas);\n},\n'contains':function contains(node,pos){\nvar npos=node.pos.getc(true),\ndim=node.getData('dim');\nreturn this.nodeHelper.triangle.contains(npos,pos,dim);\n}},\n\n'star':{\n'render':function render(node,canvas){\nvar pos=node.pos.getc(true),\ndim=node.getData('dim');\nthis.nodeHelper.star.render('fill',pos,dim,canvas);\n},\n'contains':function contains(node,pos){\nvar npos=node.pos.getc(true),\ndim=node.getData('dim');\nreturn this.nodeHelper.star.contains(npos,pos,dim);\n}}});\n\n\n\n/*\n    Class: RGraph.Plot.EdgeTypes\n\n    This class contains a list of <Graph.Adjacence> built-in types. \n    Edge types implemented are 'none', 'line' and 'arrow'.\n  \n    You can add your custom edge types, customizing your visualization to the extreme.\n  \n    Example:\n  \n    (start code js)\n      RGraph.Plot.EdgeTypes.implement({\n        'mySpecialType': {\n          'render': function(adj, canvas) {\n            //print your custom edge to canvas\n          },\n          //optional\n          'contains': function(adj, pos) {\n            //return true if pos is inside the arc or false otherwise\n          }\n        }\n      });\n    (end code)\n  \n  */\nRGraph.Plot.EdgeTypes=new Class({\n'none':$.empty,\n'line':{\n'render':function render(adj,canvas){\nvar from=adj.nodeFrom.pos.getc(true),\nto=adj.nodeTo.pos.getc(true);\nthis.edgeHelper.line.render(from,to,canvas);\n},\n'contains':function contains(adj,pos){\nvar from=adj.nodeFrom.pos.getc(true),\nto=adj.nodeTo.pos.getc(true);\nreturn this.edgeHelper.line.contains(from,to,pos,this.edge.epsilon);\n}},\n\n'arrow':{\n'render':function render(adj,canvas){\nvar from=adj.nodeFrom.pos.getc(true),\nto=adj.nodeTo.pos.getc(true),\ndim=adj.getData('dim'),\ndirection=adj.data.$direction,\ninv=direction&&direction.length>1&&direction[0]!=adj.nodeFrom.id;\nthis.edgeHelper.arrow.render(from,to,dim,inv,canvas);\n},\n'contains':function contains(adj,pos){\nvar from=adj.nodeFrom.pos.getc(true),\nto=adj.nodeTo.pos.getc(true);\nreturn this.edgeHelper.arrow.contains(from,to,pos,this.edge.epsilon);\n}}});\n\n\n\n})($jit.RGraph);\n\n\n/*\n * File: Layouts.ForceDirected.js\n *\n*/\n\n/*\n * Class: Layouts.ForceDirected\n * \n * Implements a Force Directed Layout.\n * \n * Implemented By:\n * \n * <ForceDirected>\n * \n * Credits:\n * \n * Marcus Cobden <http://marcuscobden.co.uk>\n * \n */\nLayouts.ForceDirected=new Class({\n\ngetOptions:function getOptions(random){\nvar s=this.canvas.getSize();\nvar w=s.width,h=s.height;\n//count nodes\nvar count=0;\nthis.graph.eachNode(function(n){\ncount++;\n});\nvar k2=w*h/count,k=Math.sqrt(k2);\nvar l=this.config.levelDistance;\n\nreturn{\nwidth:w,\nheight:h,\ntstart:w*0.1,\nnodef:function nodef(x){return k2/(x||1);},\nedgef:function edgef(x){return(/* x * x / k; */k*(x-l));}};\n\n},\n\ncompute:function compute(property,incremental){\nvar prop=$.splat(property||['current','start','end']);\nvar opt=this.getOptions();\nNodeDim.compute(this.graph,prop,this.config);\nthis.graph.computeLevels(this.root,0,\"ignore\");\nthis.graph.eachNode(function(n){\n$.each(prop,function(p){\nvar pos=n.getPos(p);\nif(pos.equals(Complex.KER)){\npos.x=opt.width/5*(Math.random()-0.5);\npos.y=opt.height/5*(Math.random()-0.5);\n}\n//initialize disp vector\nn.disp={};\n$.each(prop,function(p){\nn.disp[p]=$C(0,0);\n});\n});\n});\nthis.computePositions(prop,opt,incremental);\n},\n\ncomputePositions:function computePositions(property,opt,incremental){\nvar times=this.config.iterations,i=0,that=this;\nif(incremental){\n(function iter(){\nfor(var total=incremental.iter,j=0;j<total;j++){\nopt.t=opt.tstart;\nif(times)opt.t*=1-i++/(times-1);\nthat.computePositionStep(property,opt);\nif(times&&i>=times){\nincremental.onComplete();\nreturn;\n}\n}\nincremental.onStep(Math.round(i/(times-1)*100));\nsetTimeout(iter,1);\n})();\n}else{\nfor(;i<times;i++){\nopt.t=opt.tstart*(1-i/(times-1));\nthis.computePositionStep(property,opt);\n}\n}\n},\n\ncomputePositionStep:function computePositionStep(property,opt){\nvar graph=this.graph;\nvar min=Math.min,max=Math.max;\nvar dpos=$C(0,0);\n//calculate repulsive forces\ngraph.eachNode(function(v){\n//initialize disp\n$.each(property,function(p){\nv.disp[p].x=0;v.disp[p].y=0;\n});\ngraph.eachNode(function(u){\nif(u.id!=v.id){\n$.each(property,function(p){\nvar vp=v.getPos(p),up=u.getPos(p);\ndpos.x=vp.x-up.x;\ndpos.y=vp.y-up.y;\nvar norm=dpos.norm()||1;\nv.disp[p].$add(dpos.\n$scale(opt.nodef(norm)/norm));\n});\n}\n});\n});\n//calculate attractive forces\nvar T=!!graph.getNode(this.root).visited;\ngraph.eachNode(function(node){\nnode.eachAdjacency(function(adj){\nvar nodeTo=adj.nodeTo;\nif(!!nodeTo.visited===T){\n$.each(property,function(p){\nvar vp=node.getPos(p),up=nodeTo.getPos(p);\ndpos.x=vp.x-up.x;\ndpos.y=vp.y-up.y;\nvar norm=dpos.norm()||1;\nnode.disp[p].$add(dpos.$scale(-opt.edgef(norm)/norm));\nnodeTo.disp[p].$add(dpos.$scale(-1));\n});\n}\n});\nnode.visited=!T;\n});\n//arrange positions to fit the canvas\nvar t=opt.t,w2=opt.width/2,h2=opt.height/2;\ngraph.eachNode(function(u){\n$.each(property,function(p){\nvar disp=u.disp[p];\nvar norm=disp.norm()||1;\nvar p=u.getPos(p);\np.$add($C(disp.x*min(Math.abs(disp.x),t)/norm,\ndisp.y*min(Math.abs(disp.y),t)/norm));\np.x=min(w2,max(-w2,p.x));\np.y=min(h2,max(-h2,p.y));\n});\n});\n}});\n\n\n/*\n * File: ForceDirected.js\n */\n\n/*\n   Class: ForceDirected\n      \n   A visualization that lays graphs using a Force-Directed layout algorithm.\n   \n   Inspired by:\n  \n   Force-Directed Drawing Algorithms (Stephen G. Kobourov) <http://www.cs.brown.edu/~rt/gdhandbook/chapters/force-directed.pdf>\n   \n  Implements:\n  \n  All <Loader> methods\n  \n   Constructor Options:\n   \n   Inherits options from\n   \n   - <Options.Canvas>\n   - <Options.Controller>\n   - <Options.Node>\n   - <Options.Edge>\n   - <Options.Label>\n   - <Options.Events>\n   - <Options.Tips>\n   - <Options.NodeStyles>\n   - <Options.Navigation>\n   \n   Additionally, there are two parameters\n   \n   levelDistance - (number) Default's *50*. The natural length desired for the edges.\n   iterations - (number) Default's *50*. The number of iterations for the spring layout simulation. Depending on the browser's speed you could set this to a more 'interesting' number, like *200*. \n     \n   Instance Properties:\n\n   canvas - Access a <Canvas> instance.\n   graph - Access a <Graph> instance.\n   op - Access a <ForceDirected.Op> instance.\n   fx - Access a <ForceDirected.Plot> instance.\n   labels - Access a <ForceDirected.Label> interface implementation.\n\n*/\n\n$jit.ForceDirected=new Class({\n\nImplements:[Loader,Extras,Layouts.ForceDirected],\n\ninitialize:function initialize(controller){\nvar $ForceDirected=$jit.ForceDirected;\n\nvar config={\niterations:50,\nlevelDistance:50};\n\n\nthis.controller=this.config=$.merge(Options(\"Canvas\",\"Node\",\"Edge\",\n\"Fx\",\"Tips\",\"NodeStyles\",\"Events\",\"Navigation\",\"Controller\",\"Label\"),config,controller);\n\nvar canvasConfig=this.config;\nif(canvasConfig.useCanvas){\nthis.canvas=canvasConfig.useCanvas;\nthis.config.labelContainer=this.canvas.id+'-label';\n}else{\nif(canvasConfig.background){\ncanvasConfig.background=$.merge({\ntype:'Circles'},\ncanvasConfig.background);\n}\nthis.canvas=new Canvas(this,canvasConfig);\nthis.config.labelContainer=(typeof canvasConfig.injectInto=='string'?canvasConfig.injectInto:canvasConfig.injectInto.id)+'-label';\n}\n\nthis.graphOptions={\n'klass':Complex,\n'Node':{\n'selected':false,\n'exist':true,\n'drawn':true}};\n\n\nthis.graph=new Graph(this.graphOptions,this.config.Node,\nthis.config.Edge);\nthis.labels=new $ForceDirected.Label[canvasConfig.Label.type](this);\nthis.fx=new $ForceDirected.Plot(this,$ForceDirected);\nthis.op=new $ForceDirected.Op(this);\nthis.json=null;\nthis.busy=false;\n// initialize extras\nthis.initializeExtras();\n},\n\n/* \n    Method: refresh \n    \n    Computes positions and plots the tree.\n  */\nrefresh:function refresh(){\n// START METAMAPS CODE\n// this.compute();\n// END METAMAPS CODE\n// ORIGINAL CODE: this.compute();\nthis.plot();\n},\n\nreposition:function reposition(){\nthis.compute('end');\n},\n\n/*\n  Method: computeIncremental\n  \n  Performs the Force Directed algorithm incrementally.\n  \n  Description:\n  \n  ForceDirected algorithms can perform many computations and lead to JavaScript taking too much time to complete. \n  This method splits the algorithm into smaller parts allowing the user to track the evolution of the algorithm and \n  avoiding browser messages such as \"This script is taking too long to complete\".\n  \n  Parameters:\n  \n  opt - (object) The object properties are described below\n  \n  iter - (number) Default's *20*. Split the algorithm into pieces of _iter_ iterations. For example, if the _iterations_ configuration property \n  of your <ForceDirected> class is 100, then you could set _iter_ to 20 to split the main algorithm into 5 smaller pieces.\n  \n  property - (string) Default's *end*. Whether to update starting, current or ending node positions. Possible values are 'end', 'start', 'current'. \n  You can also set an array of these properties. If you'd like to keep the current node positions but to perform these \n  computations for final animation positions then you can just choose 'end'.\n  \n  onStep - (function) A callback function called when each \"small part\" of the algorithm completed. This function gets as first formal \n  parameter a percentage value.\n  \n  onComplete - A callback function called when the algorithm completed.\n  \n  Example:\n  \n  In this example I calculate the end positions and then animate the graph to those positions\n  \n  (start code js)\n  var fd = new $jit.ForceDirected(...);\n  fd.computeIncremental({\n    iter: 20,\n    property: 'end',\n    onStep: function(perc) {\n      Log.write(\"loading \" + perc + \"%\");\n    },\n    onComplete: function() {\n      Log.write(\"done\");\n      fd.animate();\n    }\n  });\n  (end code)\n  \n  In this example I calculate all positions and (re)plot the graph\n  \n  (start code js)\n  var fd = new ForceDirected(...);\n  fd.computeIncremental({\n    iter: 20,\n    property: ['end', 'start', 'current'],\n    onStep: function(perc) {\n      Log.write(\"loading \" + perc + \"%\");\n    },\n    onComplete: function() {\n      Log.write(\"done\");\n      fd.plot();\n    }\n  });\n  (end code)\n  \n  */\ncomputeIncremental:function computeIncremental(opt){\nopt=$.merge({\niter:20,\nproperty:'end',\nonStep:$.empty,\nonComplete:$.empty},\nopt||{});\n\nthis.config.onBeforeCompute(this.graph.getNode(this.root));\nthis.compute(opt.property,opt);\n},\n\n/*\n    Method: plot\n   \n    Plots the ForceDirected graph. This is a shortcut to *fx.plot*.\n   */\nplot:function plot(){\nthis.fx.plot();\n},\n\n/*\n     Method: animate\n    \n     Animates the graph from the current positions to the 'end' node positions.\n  */\nanimate:function animate(opt){\nthis.fx.animate($.merge({\nmodes:['linear']},\nopt||{}));\n}});\n\n\n$jit.ForceDirected.$extend=true;\n\n(function(ForceDirected){\n\n/*\n     Class: ForceDirected.Op\n     \n     Custom extension of <Graph.Op>.\n\n     Extends:\n\n     All <Graph.Op> methods\n     \n     See also:\n     \n     <Graph.Op>\n\n  */\nForceDirected.Op=new Class({\n\nImplements:Graph.Op});\n\n\n\n/*\n    Class: ForceDirected.Plot\n    \n    Custom extension of <Graph.Plot>.\n  \n    Extends:\n  \n    All <Graph.Plot> methods\n    \n    See also:\n    \n    <Graph.Plot>\n  \n  */\nForceDirected.Plot=new Class({\n\nImplements:Graph.Plot});\n\n\n\n/*\n    Class: ForceDirected.Label\n    \n    Custom extension of <Graph.Label>. \n    Contains custom <Graph.Label.SVG>, <Graph.Label.HTML> and <Graph.Label.Native> extensions.\n  \n    Extends:\n  \n    All <Graph.Label> methods and subclasses.\n  \n    See also:\n  \n    <Graph.Label>, <Graph.Label.Native>, <Graph.Label.HTML>, <Graph.Label.SVG>.\n  \n  */\nForceDirected.Label={};\n\n/*\n     ForceDirected.Label.Native\n     \n     Custom extension of <Graph.Label.Native>.\n\n     Extends:\n\n     All <Graph.Label.Native> methods\n\n     See also:\n\n     <Graph.Label.Native>\n\n  */\nForceDirected.Label.Native=new Class({\nImplements:Graph.Label.Native});\n\n\n/*\n    ForceDirected.Label.SVG\n    \n    Custom extension of <Graph.Label.SVG>.\n  \n    Extends:\n  \n    All <Graph.Label.SVG> methods\n  \n    See also:\n  \n    <Graph.Label.SVG>\n  \n  */\nForceDirected.Label.SVG=new Class({\nImplements:Graph.Label.SVG,\n\ninitialize:function initialize(viz){\nthis.viz=viz;\n},\n\n/* \n       placeLabel\n\n       Overrides abstract method placeLabel in <Graph.Label>.\n\n       Parameters:\n\n       tag - A DOM label element.\n       node - A <Graph.Node>.\n       controller - A configuration/controller object passed to the visualization.\n      \n     */\nplaceLabel:function placeLabel(tag,node,controller){\nvar pos=node.pos.getc(true),\ncanvas=this.viz.canvas,\nox=canvas.translateOffsetX,\noy=canvas.translateOffsetY,\nsx=canvas.scaleOffsetX,\nsy=canvas.scaleOffsetY,\nradius=canvas.getSize();\nvar labelPos={\nx:Math.round(pos.x*sx+ox+radius.width/2),\ny:Math.round(pos.y*sy+oy+radius.height/2)};\n\ntag.setAttribute('x',labelPos.x);\ntag.setAttribute('y',labelPos.y);\n\ncontroller.onPlaceLabel(tag,node);\n}});\n\n\n/*\n     ForceDirected.Label.HTML\n     \n     Custom extension of <Graph.Label.HTML>.\n\n     Extends:\n\n     All <Graph.Label.HTML> methods.\n\n     See also:\n\n     <Graph.Label.HTML>\n\n  */\nForceDirected.Label.HTML=new Class({\nImplements:Graph.Label.HTML,\n\ninitialize:function initialize(viz){\nthis.viz=viz;\n},\n/* \n       placeLabel\n\n       Overrides abstract method placeLabel in <Graph.Plot>.\n\n       Parameters:\n\n       tag - A DOM label element.\n       node - A <Graph.Node>.\n       controller - A configuration/controller object passed to the visualization.\n      \n     */\nplaceLabel:function placeLabel(tag,node,controller){\nvar pos=node.pos.getc(true),\ncanvas=this.viz.canvas,\nox=canvas.translateOffsetX,\noy=canvas.translateOffsetY,\nsx=canvas.scaleOffsetX,\nsy=canvas.scaleOffsetY,\nradius=canvas.getSize();\nvar labelPos={\nx:Math.round(pos.x*sx+ox+radius.width/2),\ny:Math.round(pos.y*sy+oy+radius.height/2)};\n\nvar style=tag.style;\nstyle.left=labelPos.x+'px';\nstyle.top=labelPos.y+'px';\nstyle.display=this.fitsInCanvas(labelPos,canvas)?'':'none';\n\ncontroller.onPlaceLabel(tag,node);\n}});\n\n\n/*\n    Class: ForceDirected.Plot.NodeTypes\n\n    This class contains a list of <Graph.Node> built-in types. \n    Node types implemented are 'none', 'circle', 'triangle', 'rectangle', 'star', 'ellipse' and 'square'.\n\n    You can add your custom node types, customizing your visualization to the extreme.\n\n    Example:\n\n    (start code js)\n      ForceDirected.Plot.NodeTypes.implement({\n        'mySpecialType': {\n          'render': function(node, canvas) {\n            //print your custom node to canvas\n          },\n          //optional\n          'contains': function(node, pos) {\n            //return true if pos is inside the node or false otherwise\n          }\n        }\n      });\n    (end code)\n\n  */\nForceDirected.Plot.NodeTypes=new Class({\n'none':{\n'render':$.empty,\n'contains':$.lambda(false)},\n\n'circle':{\n'render':function render(node,canvas){\nvar pos=node.pos.getc(true),\ndim=node.getData('dim');\nthis.nodeHelper.circle.render('fill',pos,dim,canvas);\n},\n'contains':function contains(node,pos){\nvar npos=node.pos.getc(true),\ndim=node.getData('dim');\nreturn this.nodeHelper.circle.contains(npos,pos,dim);\n}},\n\n'ellipse':{\n'render':function render(node,canvas){\nvar pos=node.pos.getc(true),\nwidth=node.getData('width'),\nheight=node.getData('height');\nthis.nodeHelper.ellipse.render('fill',pos,width,height,canvas);\n},\n'contains':function contains(node,pos){\nvar npos=node.pos.getc(true),\nwidth=node.getData('width'),\nheight=node.getData('height');\nreturn this.nodeHelper.ellipse.contains(npos,pos,width,height);\n}},\n\n'square':{\n'render':function render(node,canvas){\nvar pos=node.pos.getc(true),\ndim=node.getData('dim');\nthis.nodeHelper.square.render('fill',pos,dim,canvas);\n},\n'contains':function contains(node,pos){\nvar npos=node.pos.getc(true),\ndim=node.getData('dim');\nreturn this.nodeHelper.square.contains(npos,pos,dim);\n}},\n\n'rectangle':{\n'render':function render(node,canvas){\nvar pos=node.pos.getc(true),\nwidth=node.getData('width'),\nheight=node.getData('height');\nthis.nodeHelper.rectangle.render('fill',pos,width,height,canvas);\n},\n'contains':function contains(node,pos){\nvar npos=node.pos.getc(true),\nwidth=node.getData('width'),\nheight=node.getData('height');\nreturn this.nodeHelper.rectangle.contains(npos,pos,width,height);\n}},\n\n'triangle':{\n'render':function render(node,canvas){\nvar pos=node.pos.getc(true),\ndim=node.getData('dim');\nthis.nodeHelper.triangle.render('fill',pos,dim,canvas);\n},\n'contains':function contains(node,pos){\nvar npos=node.pos.getc(true),\ndim=node.getData('dim');\nreturn this.nodeHelper.triangle.contains(npos,pos,dim);\n}},\n\n'star':{\n'render':function render(node,canvas){\nvar pos=node.pos.getc(true),\ndim=node.getData('dim');\nthis.nodeHelper.star.render('fill',pos,dim,canvas);\n},\n'contains':function contains(node,pos){\nvar npos=node.pos.getc(true),\ndim=node.getData('dim');\nreturn this.nodeHelper.star.contains(npos,pos,dim);\n}}});\n\n\n\n/*\n    Class: ForceDirected.Plot.EdgeTypes\n  \n    This class contains a list of <Graph.Adjacence> built-in types. \n    Edge types implemented are 'none', 'line' and 'arrow'.\n  \n    You can add your custom edge types, customizing your visualization to the extreme.\n  \n    Example:\n  \n    (start code js)\n      ForceDirected.Plot.EdgeTypes.implement({\n        'mySpecialType': {\n          'render': function(adj, canvas) {\n            //print your custom edge to canvas\n          },\n          //optional\n          'contains': function(adj, pos) {\n            //return true if pos is inside the arc or false otherwise\n          }\n        }\n      });\n    (end code)\n  \n  */\nForceDirected.Plot.EdgeTypes=new Class({\n'none':$.empty,\n'line':{\n'render':function render(adj,canvas){\nvar from=adj.nodeFrom.pos.getc(true),\nto=adj.nodeTo.pos.getc(true);\nthis.edgeHelper.line.render(from,to,canvas);\n},\n'contains':function contains(adj,pos){\nvar from=adj.nodeFrom.pos.getc(true),\nto=adj.nodeTo.pos.getc(true);\nreturn this.edgeHelper.line.contains(from,to,pos,this.edge.epsilon);\n}},\n\n'arrow':{\n'render':function render(adj,canvas){\nvar from=adj.nodeFrom.pos.getc(true),\nto=adj.nodeTo.pos.getc(true),\ndim=adj.getData('dim'),\ndirection=adj.data.$direction,\ninv=direction&&direction.length>1&&direction[0]!=adj.nodeFrom.id;\nthis.edgeHelper.arrow.render(from,to,dim,inv,canvas);\n},\n'contains':function contains(adj,pos){\nvar from=adj.nodeFrom.pos.getc(true),\nto=adj.nodeTo.pos.getc(true);\nreturn this.edgeHelper.arrow.contains(from,to,pos,this.edge.epsilon);\n}}});\n\n\n\n})($jit.ForceDirected);\n\n\n/*\n * Vector3 class based on three.js http://github.com/mrdoob/three.js, Copyright (c) Mr.doob http://mrdoob.com/, MIT License http://github.com/mrdoob/three.js/blob/master/LICENSE \n */\n\nvar Vector3=function Vector3(x,y,z){\nthis.x=x||0;\nthis.y=y||0;\nthis.z=z||0;\n};\n\n$jit.Vector3=Vector3;\n\nVector3.prototype={\nset:function set(v){\nthis.x=v.x;\nthis.y=v.y;\nthis.z=v.z;\n},\n\nsetc:function setc(x,y,z){\nthis.x=x;\nthis.y=y;\nthis.z=z;\n},\n\ngetc:function getc(){\nreturn this;\n},\n\n//TODO(nico): getp\n\nadd:function add(v1,v2){\nthis.x=v1.x+v2.x;\nthis.y=v1.y+v2.y;\nthis.z=v1.z+v2.z;\nreturn this;\n},\n\n$add:function $add(v){\nthis.x+=v.x;\nthis.y+=v.y;\nthis.z+=v.z;\nreturn this;\n},\n\naddScalar:function addScalar(s){\nthis.x+=s;\nthis.y+=s;\nthis.z+=s;\nreturn this;\n},\n\nsub:function sub(v1,v2){\nthis.x=v1.x-v2.x;\nthis.y=v1.y-v2.y;\nthis.z=v1.z-v2.z;\nreturn this;\n},\n\n$sub:function $sub(v){\nthis.x-=v.x;\nthis.y-=v.y;\nthis.z-=v.z;\nreturn this;\n},\n\ncross:function cross(v1,v2){\nthis.x=v1.y*v2.z-v1.z*v2.y;\nthis.y=v1.z*v2.x-v1.x*v2.z;\nthis.z=v1.x*v2.y-v1.y*v2.x;\nreturn this;\n},\n\n$cross:function $cross(v){\nvar tx=this.x,ty=this.y,tz=this.z;\n\nthis.x=ty*v.z-tz*v.y;\nthis.y=tz*v.x-tx*v.z;\nthis.z=tx*v.y-ty*v.x;\nreturn this;\n},\n\n$multiply:function $multiply(v){\nthis.x*=v.x;\nthis.y*=v.y;\nthis.z*=v.z;\nreturn this;\n},\n\n$scale:function $scale(s){\nthis.x*=s;\nthis.y*=s;\nthis.z*=s;\nreturn this;\n},\n\ndot:function dot(v){\nreturn this.x*v.x+this.y*v.y+this.z*v.z;\n},\n\ndistanceTo:function distanceTo(v){\nreturn Math.sqrt(this.distanceToSquared(v));\n},\n\ndistanceToSquared:function distanceToSquared(v){\nvar dx=this.x-v.x,dy=this.y-v.y,dz=this.z-v.z;\nreturn dx*dx+dy*dy+dz*dz;\n},\n\nnorm:function norm(){\nreturn Math.sqrt(this.x*this.x+this.y*this.y+this.z*this.z);\n},\n\nnormSquared:function normSquared(){\nreturn this.x*this.x+this.y*this.y+this.z*this.z;\n},\n\nnegate:function negate(){\nthis.x=-this.x;\nthis.y=-this.y;\nthis.z=-this.z;\nreturn this;\n},\n\nnormalize:function normalize(){\nvar len=this.norm();\nif(len>0){\nthis.$scale(1/len);\n}\nreturn this;\n},\n\nisZero:function isZero(){\nvar almostZero=0.0001,\nabs=Math.abs;\n\nreturn abs(this.x)<almostZero&&abs(this.y)<almostZero&&abs(this.z)<almostZero;\n},\n\nclone:function clone(){\nreturn new Vector3(this.x,this.y,this.z);\n}};\n\n\nvar $V3=function $V3(a,b,c){return new Vector3(a,b,c);};\n\n/*\n * Matrix4 class based on three.js http://github.com/mrdoob/three.js, Copyright (c) Mr.doob http://mrdoob.com/, MIT License http://github.com/mrdoob/three.js/blob/master/LICENSE \n */\n\nvar Matrix4=function Matrix4(){\nthis._x=new Vector3();\nthis._y=new Vector3();\nthis._z=new Vector3();\n};\n\n$jit.Matrix4=Matrix4;\n\nMatrix4.prototype={\n\nn11:1,n12:0,n13:0,n14:0,\nn21:0,n22:1,n23:0,n24:0,\nn31:0,n32:0,n33:1,n34:0,\nn41:0,n42:0,n43:0,n44:1,\n\nidentity:function identity(){\nthis.n11=1;this.n12=0;this.n13=0;this.n14=0;\nthis.n21=0;this.n22=1;this.n23=0;this.n24=0;\nthis.n31=0;this.n32=0;this.n33=1;this.n34=0;\nthis.n41=0;this.n42=0;this.n43=0;this.n44=1;\n},\n\nlookAt:function lookAt(eye,center,up){\nvar x=this._x,y=this._y,z=this._z;\n\nz.sub(eye,center);\nz.normalize();\n\nx.cross(up,z);\nx.normalize();\n\ny.cross(z,x);\ny.normalize();\n\nthis.n11=x.x;this.n12=x.y;this.n13=x.z;this.n14=-x.dot(eye);\nthis.n21=y.x;this.n22=y.y;this.n23=y.z;this.n24=-y.dot(eye);\nthis.n31=z.x;this.n32=z.y;this.n33=z.z;this.n34=-z.dot(eye);\n},\n\ntransform:function transform(v){\nvar vx=v.x,vy=v.y,vz=v.z,vw=v.w?v.w:1.0;\n\nv.x=this.n11*vx+this.n12*vy+this.n13*vz+this.n14*vw;\nv.y=this.n21*vx+this.n22*vy+this.n23*vz+this.n24*vw;\nv.z=this.n31*vx+this.n32*vy+this.n33*vz+this.n34*vw;\n\nvw=this.n41*vx+this.n42*vy+this.n43*vz+this.n44*vw;\n\nif(v.w){\nv.w=vw;\n}else{\nv.x=v.x/vw;\nv.y=v.y/vw;\nv.z=v.z/vw;\n}\n},\n\nmultiply:function multiply(a,b){\nthis.n11=a.n11*b.n11+a.n12*b.n21+a.n13*b.n31+a.n14*b.n41;\nthis.n12=a.n11*b.n12+a.n12*b.n22+a.n13*b.n32+a.n14*b.n42;\nthis.n13=a.n11*b.n13+a.n12*b.n23+a.n13*b.n33+a.n14*b.n43;\nthis.n14=a.n11*b.n14+a.n12*b.n24+a.n13*b.n34+a.n14*b.n44;\n\nthis.n21=a.n21*b.n11+a.n22*b.n21+a.n23*b.n31+a.n24*b.n41;\nthis.n22=a.n21*b.n12+a.n22*b.n22+a.n23*b.n32+a.n24*b.n42;\nthis.n23=a.n21*b.n13+a.n22*b.n23+a.n23*b.n33+a.n24*b.n43;\nthis.n24=a.n21*b.n14+a.n22*b.n24+a.n23*b.n34+a.n24*b.n44;\n\nthis.n31=a.n31*b.n11+a.n32*b.n21+a.n33*b.n31+a.n34*b.n41;\nthis.n32=a.n31*b.n12+a.n32*b.n22+a.n33*b.n32+a.n34*b.n42;\nthis.n33=a.n31*b.n13+a.n32*b.n23+a.n33*b.n33+a.n34*b.n43;\nthis.n34=a.n31*b.n14+a.n32*b.n24+a.n33*b.n34+a.n34*b.n44;\n\nthis.n41=a.n41*b.n11+a.n42*b.n21+a.n43*b.n31+a.n44*b.n41;\nthis.n42=a.n41*b.n12+a.n42*b.n22+a.n43*b.n32+a.n44*b.n42;\nthis.n43=a.n41*b.n13+a.n42*b.n23+a.n43*b.n33+a.n44*b.n43;\nthis.n44=a.n41*b.n14+a.n42*b.n24+a.n43*b.n34+a.n44*b.n44;\n},\n\n$multiply:function $multiply(m){\nvar n11=this.n11,n12=this.n12,n13=this.n13,n14=this.n14,\nn21=this.n21,n22=this.n22,n23=this.n23,n24=this.n24,\nn31=this.n31,n32=this.n32,n33=this.n33,n34=this.n34,\nn41=this.n41,n42=this.n42,n43=this.n43,n44=this.n44;\n\nthis.n11=n11*m.n11+n12*m.n21+n13*m.n31+n14*m.n41;\nthis.n12=n11*m.n12+n12*m.n22+n13*m.n32+n14*m.n42;\nthis.n13=n11*m.n13+n12*m.n23+n13*m.n33+n14*m.n43;\nthis.n14=n11*m.n14+n12*m.n24+n13*m.n34+n14*m.n44;\n\nthis.n21=n21*m.n11+n22*m.n21+n23*m.n31+n24*m.n41;\nthis.n22=n21*m.n12+n22*m.n22+n23*m.n32+n24*m.n42;\nthis.n23=n21*m.n13+n22*m.n23+n23*m.n33+n24*m.n43;\nthis.n24=n21*m.n14+n22*m.n24+n23*m.n34+n24*m.n44;\n\nthis.n31=n31*m.n11+n32*m.n21+n33*m.n31+n34*m.n41;\nthis.n32=n31*m.n12+n32*m.n22+n33*m.n32+n34*m.n42;\nthis.n33=n31*m.n13+n32*m.n23+n33*m.n33+n34*m.n43;\nthis.n34=n31*m.n14+n32*m.n24+n33*m.n34+n34*m.n44;\n\nthis.n41=n41*m.n11+n42*m.n21+n43*m.n31+n44*m.n41;\nthis.n42=n41*m.n12+n42*m.n22+n43*m.n32+n44*m.n42;\nthis.n43=n41*m.n13+n42*m.n23+n43*m.n33+n44*m.n43;\nthis.n44=n41*m.n14+n42*m.n24+n43*m.n34+n44*m.n44;\n},\n\n$scale:function $scale(s){\nthis.n11*=s;this.n12*=s;this.n13*=s;this.n14*=s;\nthis.n21*=s;this.n22*=s;this.n23*=s;this.n24*=s;\nthis.n31*=s;this.n32*=s;this.n33*=s;this.n34*=s;\nthis.n41*=s;this.n42*=s;this.n43*=s;this.n44*=s;\nreturn this;\n},\n\n$add:function $add(m){\nthis.n11+=m.n11;\nthis.n12+=m.n12;\nthis.n13+=m.n13;\nthis.n14+=m.n14;\nthis.n21+=m.n21;\nthis.n22+=m.n22;\nthis.n23+=m.n23;\nthis.n24+=m.n24;\nthis.n31+=m.n31;\nthis.n32+=m.n32;\nthis.n33+=m.n33;\nthis.n34+=m.n34;\nthis.n41+=m.n41;\nthis.n42+=m.n42;\nthis.n43+=m.n43;\nthis.n44+=m.n44;\nreturn this;\n},\n\ndeterminant:function determinant(){\nreturn(\nthis.n14*this.n23*this.n32*this.n41-\nthis.n13*this.n24*this.n32*this.n41-\nthis.n14*this.n22*this.n33*this.n41+\nthis.n12*this.n24*this.n33*this.n41+\n\nthis.n13*this.n22*this.n34*this.n41-\nthis.n12*this.n23*this.n34*this.n41-\nthis.n14*this.n23*this.n31*this.n42+\nthis.n13*this.n24*this.n31*this.n42+\n\nthis.n14*this.n21*this.n33*this.n42-\nthis.n11*this.n24*this.n33*this.n42-\nthis.n13*this.n21*this.n34*this.n42+\nthis.n11*this.n23*this.n34*this.n42+\n\nthis.n14*this.n22*this.n31*this.n43-\nthis.n12*this.n24*this.n31*this.n43-\nthis.n14*this.n21*this.n32*this.n43+\nthis.n11*this.n24*this.n32*this.n43+\n\nthis.n12*this.n21*this.n34*this.n43-\nthis.n11*this.n22*this.n34*this.n43-\nthis.n13*this.n22*this.n31*this.n44+\nthis.n12*this.n23*this.n31*this.n44+\n\nthis.n13*this.n21*this.n32*this.n44-\nthis.n11*this.n23*this.n32*this.n44-\nthis.n12*this.n21*this.n33*this.n44+\nthis.n11*this.n22*this.n33*this.n44);\n},\n\n$transpose:function $transpose(){\nfunction swap(obj,p1,p2){\nvar aux=obj[p1];\nobj[p1]=obj[p2];\nobj[p2]=aux;\n}\n\nswap(this,'n21','n12');\nswap(this,'n31','n13');\nswap(this,'n32','n23');\nswap(this,'n41','n14');\nswap(this,'n42','n24');\nswap(this,'n43','n34');\nreturn this;\n},\n\nclone:function clone(){\nvar m=new Matrix4();\nm.n11=this.n11;m.n12=this.n12;m.n13=this.n13;m.n14=this.n14;\nm.n21=this.n21;m.n22=this.n22;m.n23=this.n23;m.n24=this.n24;\nm.n31=this.n31;m.n32=this.n32;m.n33=this.n33;m.n34=this.n34;\nm.n41=this.n41;m.n42=this.n42;m.n43=this.n43;m.n44=this.n44;\nreturn m;\n},\n\nflatten:function flatten(){\nreturn[this.n11,this.n21,this.n31,this.n41,\nthis.n12,this.n22,this.n32,this.n42,\nthis.n13,this.n23,this.n33,this.n43,\nthis.n14,this.n24,this.n34,this.n44];\n}};\n\n\nMatrix4.translationMatrix=function(x,y,z){\nvar m=new Matrix4();\n\nm.n14=x;\nm.n24=y;\nm.n34=z;\n\nreturn m;\n};\n\nMatrix4.scaleMatrix=function(x,y,z){\nvar m=new Matrix4();\n\nm.n11=x;\nm.n22=y;\nm.n33=z;\n\nreturn m;\n};\n\nMatrix4.rotationXMatrix=function(theta){\nvar rot=new Matrix4();\n\nrot.n22=rot.n33=Math.cos(theta);\nrot.n32=Math.sin(theta);\nrot.n23=-rot.n32;\n\nreturn rot;\n};\n\nMatrix4.rotationYMatrix=function(theta){\nvar rot=new Matrix4();\n\nrot.n11=rot.n33=Math.cos(theta);\nrot.n13=Math.sin(theta);\nrot.n31=-rot.n13;\n\nreturn rot;\n};\n\nMatrix4.rotationZMatrix=function(theta){\nvar rot=new Matrix4();\n\nrot.n11=rot.n22=Math.cos(theta);\nrot.n21=Math.sin(theta);\nrot.n12=-rot.n21;\n\nreturn rot;\n};\n\nMatrix4.makeInvert=function(m1){\nvar m2=new Matrix4();\n\nm2.n11=m1.n23*m1.n34*m1.n42-m1.n24*m1.n33*m1.n42+m1.n24*m1.n32*m1.n43-m1.n22*m1.n34*m1.n43-m1.n23*m1.n32*m1.n44+m1.n22*m1.n33*m1.n44;\nm2.n12=m1.n14*m1.n33*m1.n42-m1.n13*m1.n34*m1.n42-m1.n14*m1.n32*m1.n43+m1.n12*m1.n34*m1.n43+m1.n13*m1.n32*m1.n44-m1.n12*m1.n33*m1.n44;\nm2.n13=m1.n13*m1.n24*m1.n42-m1.n14*m1.n23*m1.n42+m1.n14*m1.n22*m1.n43-m1.n12*m1.n24*m1.n43-m1.n13*m1.n22*m1.n44+m1.n12*m1.n23*m1.n44;\nm2.n14=m1.n14*m1.n23*m1.n32-m1.n13*m1.n24*m1.n32-m1.n14*m1.n22*m1.n33+m1.n12*m1.n24*m1.n33+m1.n13*m1.n22*m1.n34-m1.n12*m1.n23*m1.n34;\nm2.n21=m1.n24*m1.n33*m1.n41-m1.n23*m1.n34*m1.n41-m1.n24*m1.n31*m1.n43+m1.n21*m1.n34*m1.n43+m1.n23*m1.n31*m1.n44-m1.n21*m1.n33*m1.n44;\nm2.n22=m1.n13*m1.n34*m1.n41-m1.n14*m1.n33*m1.n41+m1.n14*m1.n31*m1.n43-m1.n11*m1.n34*m1.n43-m1.n13*m1.n31*m1.n44+m1.n11*m1.n33*m1.n44;\nm2.n23=m1.n14*m1.n23*m1.n41-m1.n13*m1.n24*m1.n41-m1.n14*m1.n21*m1.n43+m1.n11*m1.n24*m1.n43+m1.n13*m1.n21*m1.n44-m1.n11*m1.n23*m1.n44;\nm2.n24=m1.n13*m1.n24*m1.n31-m1.n14*m1.n23*m1.n31+m1.n14*m1.n21*m1.n33-m1.n11*m1.n24*m1.n33-m1.n13*m1.n21*m1.n34+m1.n11*m1.n23*m1.n34;\nm2.n31=m1.n22*m1.n34*m1.n41-m1.n24*m1.n32*m1.n41+m1.n24*m1.n31*m1.n42-m1.n21*m1.n34*m1.n42-m1.n22*m1.n31*m1.n44+m1.n21*m1.n32*m1.n44;\nm2.n32=m1.n14*m1.n32*m1.n41-m1.n12*m1.n34*m1.n41-m1.n14*m1.n31*m1.n42+m1.n11*m1.n34*m1.n42+m1.n12*m1.n31*m1.n44-m1.n11*m1.n32*m1.n44;\nm2.n33=m1.n13*m1.n24*m1.n41-m1.n14*m1.n22*m1.n41+m1.n14*m1.n21*m1.n42-m1.n11*m1.n24*m1.n42-m1.n12*m1.n21*m1.n44+m1.n11*m1.n22*m1.n44;\nm2.n34=m1.n14*m1.n22*m1.n31-m1.n12*m1.n24*m1.n31-m1.n14*m1.n21*m1.n32+m1.n11*m1.n24*m1.n32+m1.n12*m1.n21*m1.n34-m1.n11*m1.n22*m1.n34;\nm2.n41=m1.n23*m1.n32*m1.n41-m1.n22*m1.n33*m1.n41-m1.n23*m1.n31*m1.n42+m1.n21*m1.n33*m1.n42+m1.n22*m1.n31*m1.n43-m1.n21*m1.n32*m1.n43;\nm2.n42=m1.n12*m1.n33*m1.n41-m1.n13*m1.n32*m1.n41+m1.n13*m1.n31*m1.n42-m1.n11*m1.n33*m1.n42-m1.n12*m1.n31*m1.n43+m1.n11*m1.n32*m1.n43;\nm2.n43=m1.n13*m1.n22*m1.n41-m1.n12*m1.n23*m1.n41-m1.n13*m1.n21*m1.n42+m1.n11*m1.n23*m1.n42+m1.n12*m1.n21*m1.n43-m1.n11*m1.n22*m1.n43;\nm2.n44=m1.n12*m1.n23*m1.n31-m1.n13*m1.n22*m1.n31+m1.n13*m1.n21*m1.n32-m1.n11*m1.n23*m1.n32-m1.n12*m1.n21*m1.n33+m1.n11*m1.n22*m1.n33;\nm2.$scale(1/m1.determinant());\n\nreturn m2;\n};\n\nMatrix4.makeFrustum=function(left,right,bottom,top,near,far){\nvar m,x,y,a,b,c,d;\n\nm=new Matrix4();\nx=2*near/(right-left);\ny=2*near/(top-bottom);\na=(right+left)/(right-left);\nb=(top+bottom)/(top-bottom);\nc=-(far+near)/(far-near);\nd=-2*far*near/(far-near);\n\nm.n11=x;m.n12=0;m.n13=a;m.n14=0;\nm.n21=0;m.n22=y;m.n23=b;m.n24=0;\nm.n31=0;m.n32=0;m.n33=c;m.n34=d;\nm.n41=0;m.n42=0;m.n43=-1;m.n44=0;\n\nreturn m;\n};\n\nMatrix4.makePerspective=function(fov,aspect,near,far){\nvar ymax,ymin,xmin,xmax;\n\nymax=near*Math.tan(fov*Math.PI/360);\nymin=-ymax;\nxmin=ymin*aspect;\nxmax=ymax*aspect;\n\nreturn Matrix4.makeFrustum(xmin,xmax,ymin,ymax,near,far);\n};\n\nMatrix4.makeOrtho=function(left,right,top,bottom,near,far){\nvar m,x,y,z,w,h,p;\n\nm=new Matrix4();\nw=right-left;\nh=bottom-top;\np=far-near;\nx=(right+left)/w;\ny=(bottom+top)/h;\nz=(far+near)/p;\n\nm.n11=2/w;m.n12=0;m.n13=0;m.n14=-x;\nm.n21=0;m.n22=2/h;m.n23=0;m.n24=-y;\nm.n31=0;m.n32=0;m.n33=-2/p;m.n34=-z;\nm.n41=0;m.n42=0;m.n43=0;m.n44=1;\n\nreturn m;\n};\n\n\n/*\n * Camera class based on three.js http://github.com/mrdoob/three.js, Copyright (c) Mr.doob http://mrdoob.com/, MIT License http://github.com/mrdoob/three.js/blob/master/LICENSE \n */\n\nvar Camera=function Camera(fov,aspect,near,far){\nthis.projectionMatrix=Matrix4.makePerspective(fov,aspect,near,far);\n};\n\nCamera.prototype={\nposition:new Vector3(),\ntarget:{\nposition:new Vector3()},\n\nup:new Vector3(0,1,0),\nmatrix:new Matrix4(),\n\nupdateMatrix:function updateMatrix(){\nthis.matrix.lookAt(this.position,this.target.position,this.up);\n}};\n\n\n\nCanvas.Base['3D']=new Class({\nImplements:Canvas.Base['2D'],\n\nprogram:null,\ncamera:null,\n\ninitialize:function initialize(viz){\nthis.viz=viz;\nthis.opt=viz.config;\nthis.size=false;\nthis.createCanvas();\nthis.initWebGL();\nthis.initCamera();\n},\n\ninitWebGL:function initWebGL(){\n//initialize context\nvar gl=this.getCtx();\n//get viewport size\nvar size=this.getSize();\n//compile and get shaders\nvar fragmentShader=this.getShader(Canvas.Base['3D'].FragmentShader,gl.FRAGMENT_SHADER);\nvar vertexShader=this.getShader(Canvas.Base['3D'].VertexShader,gl.VERTEX_SHADER);\n//create program and link shaders\nvar program=gl.createProgram();\ngl.attachShader(program,vertexShader);\ngl.attachShader(program,fragmentShader);\ngl.linkProgram(program);\nif(!gl.getProgramParameter(program,gl.LINK_STATUS)){\nthrow\"Could not link shaders\";\n}\ngl.useProgram(program);\n//bind name to variable location in shaders\n$.extend(program,{\n'viewMatrix':gl.getUniformLocation(program,'viewMatrix'),\n'projectionMatrix':gl.getUniformLocation(program,'projectionMatrix'),\n'normalMatrix':gl.getUniformLocation(program,'normalMatrix'),\n'color':gl.getUniformLocation(program,'color'),\n\n'enableLighting':gl.getUniformLocation(program,'enableLighting'),\n'ambientColor':gl.getUniformLocation(program,'ambientColor'),\n'directionalColor':gl.getUniformLocation(program,'directionalColor'),\n'lightingDirection':gl.getUniformLocation(program,'lightingDirection'),\n\n'position':gl.getAttribLocation(program,'position'),\n'normal':gl.getAttribLocation(program,'normal')});\n\ngl.enableVertexAttribArray(program.position);\ngl.enableVertexAttribArray(program.normal);\nthis.program=program;\n//set general rendering options\ngl.clearColor(0,0,0,0);\ngl.clearDepth(1);\n\ngl.enable(gl.DEPTH_TEST);\ngl.depthFunc(gl.LEQUAL);\n\ngl.enable(gl.BLEND);\ngl.blendFunc(gl.SRC_ALPHA,gl.ONE_MINUS_SRC_ALPHA);\n\ngl.viewport(0,0,size.width,size.height);\n},\n\ninitCamera:function initCamera(){\nvar size=this.getSize();\nvar camera=new Camera(75,size.width/size.height,1,1000);\ncamera.position.z=500;\nthis.camera=camera;\n},\n\ngetShader:function getShader(src,type){\nvar gl=this.ctx;\nvar shader=gl.createShader(type);\ngl.shaderSource(shader,src);\ngl.compileShader(shader);\nif(!gl.getShaderParameter(shader,gl.COMPILE_STATUS)){\nvar info=gl.getShaderInfoLog(shader);\nthrow\"Could not compile shader src: \"+info;\n}\nreturn shader;\n},\n\ngetCtx:function getCtx(){\nif(!this.ctx)\nreturn this.ctx=this.canvas.getContext('experimental-webgl');\nreturn this.ctx;\n},\n\nresize:function resize(width,height){\nvar size=this.getSize(),\ncanvas=this.canvas,\nstyles=canvas.style,\ngl=this.getCtx();\nthis.size=false;\ncanvas.width=width;\ncanvas.height=height;\nstyles.width=width+\"px\";\nstyles.height=height+\"px\";\ngl.viewport(0,0,width,height);\n\nthis.translateOffsetX=\nthis.translateOffsetY=0;\nthis.scaleOffsetX=\nthis.scaleOffsetY=1;\nthis.clear();\nthis.viz.resize(width,height,this);\n},\n\ntranslateToCenter:$.empty,\nscale:$.empty,\n\ntranslate:function translate(x,y,z,disablePlot){\nvar sx=this.scaleOffsetX,\nsy=this.scaleOffsetY;\nthis.translateOffsetX+=x*sx;\nthis.translateOffsetY+=y*sy;\nvar pos=this.camera.position;\npos.x+=x;\npos.y+=y;\npos.z+=z;\n!disablePlot&&this.plot();\n},\n\nclear:function clear(){\nvar gl=this.getCtx();\ngl.clear(gl.COLOR_BUFFER_BIT|gl.DEPTH_BUFFER_BIT);\n//TODO(nico) is this OK? I mean, to put this line here.\nthis.camera.updateMatrix();\n},\n\nplot:function plot(){\nthis.clear();\nthis.viz.plot(this);\n}});\n\n\n//Shaders code\nCanvas.Base['3D'].FragmentShader=[\n\"#ifdef GL_ES\",\n\"precision highp float;\",\n\"#endif\",\n\n\"varying vec4 vcolor;\",\n\"varying vec3 lightWeighting;\",\n\n\"void main(){\",\n\n\"gl_FragColor = vec4(vcolor.rgb * lightWeighting, vcolor.a);\",\n\n\"}\"].\njoin(\"\\n\");\n\nCanvas.Base['3D'].VertexShader=[\n\"attribute vec3 position;\",\n\"attribute vec3 normal;\",\n\"uniform vec4 color;\",\n\n\"uniform mat4 viewMatrix;\",\n\"uniform mat4 projectionMatrix;\",\n\"uniform mat4 normalMatrix;\",\n\n\"uniform bool enableLighting;\",\n\"uniform vec3 ambientColor;\",\n\"uniform vec3 directionalColor;\",\n\"uniform vec3 lightingDirection;\",\n\n\"varying vec4 vcolor;\",\n\"varying vec3 lightWeighting;\",\n\n\"void main(void) {\",\n\n\"if(!enableLighting) {\",\n\"lightWeighting = vec3(1.0, 1.0, 1.0);\",\n\"} else {\",\n\"vec4 transformedNormal = normalMatrix * vec4(normal, 1.0);\",\n\"float directionalLightWeighting = max(dot(transformedNormal.xyz, lightingDirection), 0.0);\",\n\"lightWeighting = ambientColor + directionalColor * directionalLightWeighting;\",\n\"}\",\n\n\"vcolor = color;\",\n\"gl_Position = projectionMatrix * viewMatrix * vec4( position, 1.0 );\",\n\n\"}\"].\njoin(\"\\n\");\n\n/*\n * Some of the geometries where inspired by three.js http://github.com/mrdoob/three.js, Copyright (c) Mr.doob http://mrdoob.com/, MIT License http://github.com/mrdoob/three.js/blob/master/LICENSE \n */\n\nvar O3D={};\n\n$jit.O3D=O3D;\n\nO3D.base=new Class({\n//array of { x, y, z } of float\nvertices:[],\n//array of { a, b, c, d? } of int\nfaces:[],\n//updated on plotNode/plotEdge\nposition:new Vector3(),\nrotation:new Vector3(),\nscale:new Vector3(1,1,1),\n//intrinsic coordinates\nmatrix:new Matrix4(),\n\nupdate:function update(elem){\nif(elem.nodeFrom&&elem.nodeTo){\nthis.updateEdge(elem);\n}else{\nthis.updateNode(elem);\n}\n},\n\nupdateNode:$.empty,\n\nupdateEdge:function updateEdge(elem){\nthis.updateNode(elem);\n},\n\nupdateMatrix:function updateMatrix(){\nvar pos=this.position,\nrot=this.rotation,\nscale=this.scale,\nmatrix=this.matrix;\n\nmatrix.identity();\n\nmatrix.$multiply(Matrix4.translationMatrix(pos.x,pos.y,pos.z));\nmatrix.$multiply(Matrix4.rotationXMatrix(rot.x));\nmatrix.$multiply(Matrix4.rotationYMatrix(rot.y));\nmatrix.$multiply(Matrix4.rotationZMatrix(rot.z));\nmatrix.$multiply(Matrix4.scaleMatrix(scale.x,scale.y,scale.z));\n},\n//compute faces normals\ncomputeNormals:function computeNormals(){\nfor(var f=0,vs=this.vertices,fs=this.faces,len=fs.length;f<len;f++){\nvar va=vs[fs[f].a],\nvb=vs[fs[f].b],\nvc=vs[fs[f].c],\ncb=new Vector3(),\nab=new Vector3();\n\ncb.sub(vc,vb);\nab.sub(va,vb);\ncb.$cross(ab);\n\nif(!cb.isZero())cb.normalize();\n\nfs[f].normal=cb;\n}\n}});\n\n\n//IsoCube\nfunction IsoCube(){\nvar vs=this.vertices,\nf4=this.faces,\nvsp=function vsp(x,y,z){vs.push({x:x,y:y,z:z});},\nf4p=function f4p(a,b,c,d){f4.push({a:a,b:b,c:c,d:d});};\n\nvsp(1,1,-1);\nvsp(1,-1,-1);\nvsp(-1,-1,-1);\nvsp(-1,1,-1);\nvsp(1,1,1);\nvsp(1,-1,1);\nvsp(-1,-1,1);\nvsp(-1,1,1);\n\nf4p(0,1,2,3);\nf4p(4,7,6,5);\nf4p(0,4,5,1);\nf4p(1,5,6,2);\nf4p(2,6,7,3);\nf4p(4,0,3,7);\n}\n\n//Cube\nO3D.cube=new Class({\nImplements:O3D.base,\n\ninitialize:function initialize(){\nIsoCube.call(this);\nthis.computeNormals();\n},\n\nupdateNode:function updateNode(obj){\nvar dim=obj.getData('dim'),\npos=obj.pos;\n\nthis.position.setc(pos.x,pos.y,pos.z);\nthis.scale.setc(dim,dim,dim);\nthis.updateMatrix();\n}});\n\n\nO3D.sphere=new Class({\nImplements:O3D.base,\n\nradius:1,\nsegments_width:10,\nsegments_height:10,\n\ninitialize:function initialize(){\nvar radius=this.radius,\nsegments_width=this.segments_width,\nsegments_height=this.segments_height,\ngridX=segments_width||8,\ngridY=segments_height||6,\ncos=Math.cos,\nsin=Math.sin,\nmax=Math.max,\npi=Math.PI;\n\nvar iHor=max(3,gridX),\niVer=max(2,gridY),\naVtc=[];\n\nfor(var j=0;j<iVer+1;j++){\nvar fRad1=j/iVer,\nfZ=radius*cos(fRad1*pi),\nfRds=radius*sin(fRad1*pi),\naRow=[],\noVtx=0;\n\nfor(var i=0;i<iHor;i++){\nvar fRad2=2*i/iHor,\nfX=fRds*Math.sin(fRad2*pi),\nfY=fRds*Math.cos(fRad2*pi);\nif(!((j==0||j==iVer)&&i>0)){\noVtx=this.vertices.push({x:fY,y:fZ,z:fX})-1;\n}\naRow.push(oVtx);\n}\naVtc.push(aRow);\n}\n\nvar iVerNum=aVtc.length;\nfor(var j=0;j<iVerNum;j++){\nvar iHorNum=aVtc[j].length;\nif(j>0){\nfor(var i=0;i<iHorNum;i++){\nvar bEnd=i==iHorNum-1;\nvar aP1=aVtc[j][bEnd?0:i+1];\nvar aP2=aVtc[j][bEnd?iHorNum-1:i];\nvar aP3=aVtc[j-1][bEnd?iHorNum-1:i];\nvar aP4=aVtc[j-1][bEnd?0:i+1];\n\nif(j<aVtc.length-1){\nthis.faces.push({a:aP1,b:aP2,c:aP3});\n}\nif(j>1){\nthis.faces.push({a:aP1,b:aP3,c:aP4});\n}\n}\n}\n}\nthis.computeNormals();\n},\n\nupdateNode:function updateNode(obj){\nvar dim=obj.getData('dim'),\npos=obj.pos;\n\nthis.position.setc(pos.x,pos.y,pos.z);\nthis.scale.setc(dim,dim,dim);\nthis.updateMatrix();\n}});\n\n\n\n\nO3D.tube=new Class({\nImplements:O3D.base,\n\nnumSegs:10,\ndim:1,\ninitialize:function initialize(){\nvar vs=this.vertices,\nf4=this.faces,\nvsp=function vsp(x,y,z){vs.push({x:x,y:y,z:z});},\nf4p=function f4p(a,b,c,d){f4.push({a:a,b:b,c:c,d:d});};\n\nvar scope=this,\nsin=Math.sin,\ncos=Math.cos,\npi=Math.PI,\npi2=pi*2,\nnumSegs=this.numSegs,\ntopRad=this.dim,\nbotRad=this.dim;\n\n// Top circle vertices\nfor(var i=0;i<numSegs;i++){\nvsp(sin(pi2*i/numSegs)*topRad,cos(pi2*i/numSegs)*topRad,-0.5);\n}\n// Bottom circle vertices\nfor(var i=0;i<numSegs;i++){\nvsp(sin(pi2*i/numSegs)*botRad,cos(pi2*i/numSegs)*botRad,0.5);\n}\n// Body \nfor(var i=0;i<numSegs;i++){\nf4p(i,(i+1)%numSegs,numSegs+(i+1)%numSegs,i+numSegs);\n}\nthis.computeNormals();\n},\n\nupdateEdge:function updateEdge(obj){\nvar lineWidth=obj.getData('lineWidth'),\nnodeFrom=obj.nodeFrom,\nnodeTo=obj.nodeTo,\nnodeFromPos=nodeFrom.pos,\nnodeToPos=nodeTo.pos,\ndist=nodeFromPos.distanceTo(nodeToPos),\nmiddle=new Vector3(),\ncurrentDir=new Vector3(0,0,1),\ndvec=new Vector3();\n\nmiddle.add(nodeFromPos,nodeToPos).$scale(0.5);\ndvec.sub(nodeToPos,nodeFromPos).normalize();\n\nvar c=dvec.dot(currentDir),\nxc=dvec.dot(new Vector3(1,0,0)),\nyc=dvec.dot(new Vector3(0,1,0)),\nt=1-c,\nrotAngle=Math.acos(c),\ns=Math.sin(rotAngle),\nrotAxis=currentDir.$cross(dvec).normalize(),\nx=rotAxis.x,\ny=rotAxis.y,\nz=rotAxis.z;\n\nvar rot=new Matrix4();\nrot.n11=t*x*x+c;\nrot.n12=t*x*y-s*z;\nrot.n13=t*x*z+s*y;\nrot.n21=t*x*y+s*z;\nrot.n22=t*y*y+c;\nrot.n23=t*y*z-s*x;\nrot.n31=t*x*z-s*y;\nrot.n32=t*y*z+s*x;\nrot.n33=t*z*z+c;\nthis.rotationMatrix=rot;\nthis.scale.setc(lineWidth,lineWidth,dist);\nthis.position.setc(middle.x,middle.y,middle.z);\nthis.updateMatrix();\n},\n\nupdateMatrix:function updateMatrix(){\nvar pos=this.position,\nscale=this.scale,\nmatrix=this.matrix;\n\nmatrix.identity();\n\nmatrix.$multiply(Matrix4.translationMatrix(pos.x,pos.y,pos.z));\nmatrix.$multiply(this.rotationMatrix);\nmatrix.$multiply(Matrix4.scaleMatrix(scale.x,scale.y,scale.z));\n}});\n\n\n\n\n/*\n * File: Layouts.ForceDirected3D.js\n *\n*/\n\n/*\n * Class: Layouts.ForceDirected3D\n * \n * Implements a Force Directed Layout.\n * \n * Implemented By:\n * \n * <ForceDirected3D>\n * \n */\nLayouts.ForceDirected3D=new Class({\n\ngetOptions:function getOptions(){\nvar s=this.canvas.getSize();\nvar w=s.width,h=s.height;\n//count nodes\nvar count=0;\nthis.graph.eachNode(function(n){\ncount++;\n});\nvar k2=w*h/count,k=Math.sqrt(k2);\nvar l=this.config.levelDistance;\n\nreturn{\nwidth:w,\nheight:h,\ntstart:w*0.1,\nnodef:function nodef(x){return k2/(x||1);},\nedgef:function edgef(x){return(/* x * x / k; */k*(x-l));}};\n\n},\n\ncompute:function compute(property,incremental){\nvar prop=$.splat(property||['current','start','end']);\nvar opt=this.getOptions();\nNodeDim.compute(this.graph,prop,this.config);\nthis.graph.computeLevels(this.root,0,\"ignore\");\nthis.graph.eachNode(function(n){\n$.each(prop,function(p){\nvar pos=n.getPos(p);\nif(pos.isZero()){\npos.x=opt.width/5*(Math.random()-0.5);\npos.y=opt.height/5*(Math.random()-0.5);\npos.z=200*(Math.random()-0.5);\n}\n//initialize disp vector\nn.disp={};\n$.each(prop,function(p){\nn.disp[p]=$V3(0,0,0);\n});\n});\n});\nthis.computePositions(prop,opt,incremental);\n},\n\ncomputePositions:function computePositions(property,opt,incremental){\nvar times=this.config.iterations,i=0,that=this;\nif(incremental){\n(function iter(){\nfor(var total=incremental.iter,j=0;j<total;j++){\nopt.t=opt.tstart*(1-i++/(times-1));\nthat.computePositionStep(property,opt);\nif(i>=times){\nincremental.onComplete();\nreturn;\n}\n}\nincremental.onStep(Math.round(i/(times-1)*100));\nsetTimeout(iter,1);\n})();\n}else{\nfor(;i<times;i++){\nopt.t=opt.tstart*(1-i/(times-1));\nthis.computePositionStep(property,opt);\n}\n}\n},\n\ncomputePositionStep:function computePositionStep(property,opt){\nvar graph=this.graph;\nvar min=Math.min,max=Math.max;\nvar dpos=$V3(0,0,0);\n//calculate repulsive forces\ngraph.eachNode(function(v){\n//initialize disp\n$.each(property,function(p){\nv.disp[p].x=0;\nv.disp[p].y=0;\nv.disp[p].z=0;\n});\ngraph.eachNode(function(u){\nif(u.id!=v.id){\n$.each(property,function(p){\nvar vp=v.getPos(p),up=u.getPos(p);\ndpos.x=vp.x-up.x;\ndpos.y=vp.y-up.y;\ndpos.z=vp.z-up.z;\nvar norm=dpos.norm()||1;\nv.disp[p].$add(dpos.\n$scale(opt.nodef(norm)/norm));\n});\n}\n});\n});\n//calculate attractive forces\nvar T=!!graph.getNode(this.root).visited;\ngraph.eachNode(function(node){\nnode.eachAdjacency(function(adj){\nvar nodeTo=adj.nodeTo;\nif(!!nodeTo.visited===T){\n$.each(property,function(p){\nvar vp=node.getPos(p),up=nodeTo.getPos(p);\ndpos.x=vp.x-up.x;\ndpos.y=vp.y-up.y;\ndpos.z=vp.z-up.z;\nvar norm=dpos.norm()||1;\nnode.disp[p].$add(dpos.$scale(-opt.edgef(norm)/norm));\nnodeTo.disp[p].$add(dpos.$scale(-1));\n});\n}\n});\nnode.visited=!T;\n});\n//arrange positions to fit the canvas\nvar t=opt.t,w2=opt.width/2,h2=opt.height/2;\ngraph.eachNode(function(u){\n$.each(property,function(p){\nvar disp=u.disp[p];\nvar norm=disp.norm()||1;\nvar p=u.getPos(p);\np.$add($V3(disp.x*min(Math.abs(disp.x),t)/norm,\ndisp.y*min(Math.abs(disp.y),t)/norm,\ndisp.z*min(Math.abs(disp.z),t)/norm));\np.x=min(w2,max(-w2,p.x));\np.y=min(h2,max(-h2,p.y));\np.z=min(h2,max(-h2,p.z));\n});\n});\n}});\n\n\n$jit.ForceDirected3D=new Class({\n\nImplements:[Loader,Extras,Layouts.ForceDirected3D],\n\ninitialize:function initialize(controller){\nvar $ForceDirected3D=$jit.ForceDirected3D;\n\nvar config={\niterations:50,\nlevelDistance:50};\n\n\nthis.controller=this.config=$.merge(Options(\"Canvas\",\"Node\",\"Edge\",\n\"Fx\",\"Tips\",\"NodeStyles\",\"Events\",\"Navigation\",\"Controller\",\"Label\"),config,controller);\n\nvar canvasConfig=this.config;\nif(canvasConfig.useCanvas){\nthis.canvas=canvasConfig.useCanvas;\nthis.config.labelContainer=this.canvas.id+'-label';\n}else{\nif(canvasConfig.background){\ncanvasConfig.background=$.merge({\ntype:'Circles'},\ncanvasConfig.background);\n}\nthis.canvas=new Canvas(this,canvasConfig);\nthis.config.labelContainer=(typeof canvasConfig.injectInto=='string'?canvasConfig.injectInto:canvasConfig.injectInto.id)+'-label';\n}\n\nthis.graphOptions={\n'klass':Vector3,\n'Node':{\n'selected':false,\n'exist':true,\n'drawn':true}};\n\n\nthis.graph=new Graph(this.graphOptions,this.config.Node,\nthis.config.Edge);\nthis.labels=new $ForceDirected3D.Label[canvasConfig.Label.type](this);\nthis.fx=new $ForceDirected3D.Plot(this,$ForceDirected3D);\nthis.op=new $ForceDirected3D.Op(this);\nthis.json=null;\nthis.busy=false;\n// initialize extras\nthis.initializeExtras();\n},\n\n/* \n    refresh \n    \n    Computes positions and plots the tree.\n  */\nrefresh:function refresh(){\nthis.compute();\nthis.plot();\n},\n\nreposition:function reposition(){\nthis.compute('end');\n},\n\n/*\n  computeIncremental\n  \n  Performs the Force Directed algorithm incrementally.\n  \n  Description:\n  \n  ForceDirected3D algorithms can perform many computations and lead to JavaScript taking too much time to complete. \n  This method splits the algorithm into smaller parts allowing the user to track the evolution of the algorithm and \n  avoiding browser messages such as \"This script is taking too long to complete\".\n  \n  Parameters:\n  \n  opt - (object) The object properties are described below\n  \n  iter - (number) Default's *20*. Split the algorithm into pieces of _iter_ iterations. For example, if the _iterations_ configuration property \n  of your <ForceDirected3D> class is 100, then you could set _iter_ to 20 to split the main algorithm into 5 smaller pieces.\n  \n  property - (string) Default's *end*. Whether to update starting, current or ending node positions. Possible values are 'end', 'start', 'current'. \n  You can also set an array of these properties. If you'd like to keep the current node positions but to perform these \n  computations for final animation positions then you can just choose 'end'.\n  \n  onStep - (function) A callback function called when each \"small part\" of the algorithm completed. This function gets as first formal \n  parameter a percentage value.\n  \n  onComplete - A callback function called when the algorithm completed.\n  \n  Example:\n  \n  In this example I calculate the end positions and then animate the graph to those positions\n  \n  (start code js)\n  var fd = new $jit.ForceDirected3D(...);\n  fd.computeIncremental({\n    iter: 20,\n    property: 'end',\n    onStep: function(perc) {\n      Log.write(\"loading \" + perc + \"%\");\n    },\n    onComplete: function() {\n      Log.write(\"done\");\n      fd.animate();\n    }\n  });\n  (end code)\n  \n  In this example I calculate all positions and (re)plot the graph\n  \n  (start code js)\n  var fd = new ForceDirected3D(...);\n  fd.computeIncremental({\n    iter: 20,\n    property: ['end', 'start', 'current'],\n    onStep: function(perc) {\n      Log.write(\"loading \" + perc + \"%\");\n    },\n    onComplete: function() {\n      Log.write(\"done\");\n      fd.plot();\n    }\n  });\n  (end code)\n  \n  */\ncomputeIncremental:function computeIncremental(opt){\nopt=$.merge({\niter:20,\nproperty:'end',\nonStep:$.empty,\nonComplete:$.empty},\nopt||{});\n\nthis.config.onBeforeCompute(this.graph.getNode(this.root));\nthis.compute(opt.property,opt);\n},\n\n/*\n    plot\n   \n    Plots the ForceDirected3D graph. This is a shortcut to *fx.plot*.\n   */\nplot:function plot(){\nthis.fx.plot();\n},\n\n/*\n     animate\n    \n     Animates the graph from the current positions to the 'end' node positions.\n  */\nanimate:function animate(opt){\nthis.fx.animate($.merge({\nmodes:['linear']},\nopt||{}));\n}});\n\n\n$jit.ForceDirected3D.$extend=true;\n\n(function(ForceDirected3D){\n\n/*\n     ForceDirected3D.Op\n     \n     Custom extension of <Graph.Op>.\n\n     Extends:\n\n     All <Graph.Op> methods\n     \n     See also:\n     \n     <Graph.Op>\n\n  */\nForceDirected3D.Op=new Class({\n\nImplements:Graph.Op});\n\n\n\n/*\n    ForceDirected3D.Plot\n    \n    Custom extension of <Graph.Plot>.\n  \n    Extends:\n  \n    All <Graph.Plot> methods\n    \n    See also:\n    \n    <Graph.Plot>\n  \n  */\nForceDirected3D.Plot=new Class({\n\nImplements:Graph.Plot3D});\n\n\n\n/*\n    ForceDirected3D.Label\n    \n    Custom extension of <Graph.Label>. \n    Contains custom <Graph.Label.SVG>, <Graph.Label.HTML> and <Graph.Label.Native> extensions.\n  \n    Extends:\n  \n    All <Graph.Label> methods and subclasses.\n  \n    See also:\n  \n    <Graph.Label>, <Graph.Label.Native>, <Graph.Label.HTML>, <Graph.Label.SVG>.\n  \n  */\nForceDirected3D.Label={};\n\n/*\n     ForceDirected3D.Label.Native\n     \n     Custom extension of <Graph.Label.Native>.\n\n     Extends:\n\n     All <Graph.Label.Native> methods\n\n     See also:\n\n     <Graph.Label.Native>\n\n  */\nForceDirected3D.Label.Native=new Class({\nImplements:Graph.Label.Native});\n\n\n/*\n    ForceDirected3D.Label.SVG\n    \n    Custom extension of <Graph.Label.SVG>.\n  \n    Extends:\n  \n    All <Graph.Label.SVG> methods\n  \n    See also:\n  \n    <Graph.Label.SVG>\n  \n  */\nForceDirected3D.Label.SVG=new Class({\nImplements:Graph.Label.SVG,\n\ninitialize:function initialize(viz){\nthis.viz=viz;\n},\n\n/* \n       placeLabel\n\n       Overrides abstract method placeLabel in <Graph.Label>.\n\n       Parameters:\n\n       tag - A DOM label element.\n       node - A <Graph.Node>.\n       controller - A configuration/controller object passed to the visualization.\n      \n     */\nplaceLabel:function placeLabel(tag,node,controller){\nvar pos=node.pos.getc(true),\ncanvas=this.viz.canvas,\nox=canvas.translateOffsetX,\noy=canvas.translateOffsetY,\nsx=canvas.scaleOffsetX,\nsy=canvas.scaleOffsetY,\nradius=canvas.getSize();\nvar labelPos={\nx:Math.round(pos.x*sx+ox+radius.width/2),\ny:Math.round(pos.y*sy+oy+radius.height/2)};\n\ntag.setAttribute('x',labelPos.x);\ntag.setAttribute('y',labelPos.y);\n\ncontroller.onPlaceLabel(tag,node);\n}});\n\n\n/*\n     ForceDirected3D.Label.HTML\n     \n     Custom extension of <Graph.Label.HTML>.\n\n     Extends:\n\n     All <Graph.Label.HTML> methods.\n\n     See also:\n\n     <Graph.Label.HTML>\n\n  */\nForceDirected3D.Label.HTML=new Class({\nImplements:Graph.Label.HTML,\n\ninitialize:function initialize(viz){\nthis.viz=viz;\n},\n/* \n       placeLabel\n\n       Overrides abstract method placeLabel in <Graph.Plot>.\n\n       Parameters:\n\n       tag - A DOM label element.\n       node - A <Graph.Node>.\n       controller - A configuration/controller object passed to the visualization.\n      \n     */\nplaceLabel:function placeLabel(tag,node,controller){\nvar pos=node.pos.getc(true),\ncanvas=this.viz.canvas,\nox=canvas.translateOffsetX,\noy=canvas.translateOffsetY,\nsx=canvas.scaleOffsetX,\nsy=canvas.scaleOffsetY,\nradius=canvas.getSize();\nvar labelPos={\nx:Math.round(pos.x*sx+ox+radius.width/2),\ny:Math.round(pos.y*sy+oy+radius.height/2)};\n\nvar style=tag.style;\nstyle.left=labelPos.x+'px';\nstyle.top=labelPos.y+'px';\nstyle.display=this.fitsInCanvas(labelPos,canvas)?'':'none';\n\ncontroller.onPlaceLabel(tag,node);\n}});\n\n\n/*\n    ForceDirected3D.Plot.NodeTypes\n\n    This class contains a list of <Graph.Node> built-in types. \n    Node types implemented are 'none', 'circle', 'triangle', 'rectangle', 'star', 'ellipse' and 'square'.\n\n    You can add your custom node types, customizing your visualization to the extreme.\n\n    Example:\n\n    (start code js)\n      ForceDirected3D.Plot.NodeTypes.implement({\n        'mySpecialType': {\n          'render': function(node, canvas) {\n            //print your custom node to canvas\n          },\n          //optional\n          'contains': function(node, pos) {\n            //return true if pos is inside the node or false otherwise\n          }\n        }\n      });\n    (end code)\n\n  */\nForceDirected3D.Plot.NodeTypes=new Class({\n'none':{\n'render':$.empty,\n'contains':$.lambda(false)},\n\n'circle':{\n'render':function render(node,canvas){\nvar pos=node.pos.getc(true),\ndim=node.getData('dim');\nthis.nodeHelper.circle.render('fill',pos,dim,canvas);\n},\n'contains':function contains(node,pos){\nvar npos=node.pos.getc(true),\ndim=node.getData('dim');\nreturn this.nodeHelper.circle.contains(npos,pos,dim);\n}},\n\n'ellipse':{\n'render':function render(node,canvas){\nvar pos=node.pos.getc(true),\nwidth=node.getData('width'),\nheight=node.getData('height');\nthis.nodeHelper.ellipse.render('fill',pos,width,height,canvas);\n},\n'contains':function contains(node,pos){\nvar npos=node.pos.getc(true),\nwidth=node.getData('width'),\nheight=node.getData('height');\nreturn this.nodeHelper.ellipse.contains(npos,pos,width,height);\n}},\n\n'square':{\n'render':function render(node,canvas){\nvar pos=node.pos.getc(true),\ndim=node.getData('dim');\nthis.nodeHelper.square.render('fill',pos,dim,canvas);\n},\n'contains':function contains(node,pos){\nvar npos=node.pos.getc(true),\ndim=node.getData('dim');\nreturn this.nodeHelper.square.contains(npos,pos,dim);\n}},\n\n'rectangle':{\n'render':function render(node,canvas){\nvar pos=node.pos.getc(true),\nwidth=node.getData('width'),\nheight=node.getData('height');\nthis.nodeHelper.rectangle.render('fill',pos,width,height,canvas);\n},\n'contains':function contains(node,pos){\nvar npos=node.pos.getc(true),\nwidth=node.getData('width'),\nheight=node.getData('height');\nreturn this.nodeHelper.rectangle.contains(npos,pos,width,height);\n}},\n\n'triangle':{\n'render':function render(node,canvas){\nvar pos=node.pos.getc(true),\ndim=node.getData('dim');\nthis.nodeHelper.triangle.render('fill',pos,dim,canvas);\n},\n'contains':function contains(node,pos){\nvar npos=node.pos.getc(true),\ndim=node.getData('dim');\nreturn this.nodeHelper.triangle.contains(npos,pos,dim);\n}},\n\n'star':{\n'render':function render(node,canvas){\nvar pos=node.pos.getc(true),\ndim=node.getData('dim');\nthis.nodeHelper.star.render('fill',pos,dim,canvas);\n},\n'contains':function contains(node,pos){\nvar npos=node.pos.getc(true),\ndim=node.getData('dim');\nreturn this.nodeHelper.star.contains(npos,pos,dim);\n}}});\n\n\n\n/*\n    ForceDirected3D.Plot.EdgeTypes\n  \n    This class contains a list of <Graph.Adjacence> built-in types. \n    Edge types implemented are 'none', 'line' and 'arrow'.\n  \n    You can add your custom edge types, customizing your visualization to the extreme.\n  \n    Example:\n  \n    (start code js)\n      ForceDirected3D.Plot.EdgeTypes.implement({\n        'mySpecialType': {\n          'render': function(adj, canvas) {\n            //print your custom edge to canvas\n          },\n          //optional\n          'contains': function(adj, pos) {\n            //return true if pos is inside the arc or false otherwise\n          }\n        }\n      });\n    (end code)\n  \n  */\nForceDirected3D.Plot.EdgeTypes=new Class({\n'none':$.empty,\n'line':{\n'render':function render(adj,canvas){\nvar from=adj.nodeFrom.pos.getc(true),\nto=adj.nodeTo.pos.getc(true);\nthis.edgeHelper.line.render(from,to,canvas);\n},\n'contains':function contains(adj,pos){\nvar from=adj.nodeFrom.pos.getc(true),\nto=adj.nodeTo.pos.getc(true);\nreturn this.edgeHelper.line.contains(from,to,pos,this.edge.epsilon);\n}},\n\n'arrow':{\n'render':function render(adj,canvas){\nvar from=adj.nodeFrom.pos.getc(true),\nto=adj.nodeTo.pos.getc(true),\ndim=adj.getData('dim'),\ndirection=adj.data.$direction,\ninv=direction&&direction.length>1&&direction[0]!=adj.nodeFrom.id;\nthis.edgeHelper.arrow.render(from,to,dim,inv,canvas);\n},\n'contains':function contains(adj,pos){\nvar from=adj.nodeFrom.pos.getc(true),\nto=adj.nodeTo.pos.getc(true);\nreturn this.edgeHelper.arrow.contains(from,to,pos,this.edge.epsilon);\n}}});\n\n\n\n})($jit.ForceDirected3D);\n\n// START METAMAPS CODE\nexports.default=$jit;\n// END METAMAPS CODE//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"170.js","sources":["frontend/src/patched/JIT.js"],"sourcesContent":["/*\nCopyright (c) 2011 Sencha Inc. - Author: Nicolas Garcia Belmonte (http://philogb.github.com/)\n\nPermission is hereby granted, free of charge, to any person obtaining a copy\nof this software and associated documentation files (the \"Software\"), to deal\nin the Software without restriction, including without limitation the rights\nto use, copy, modify, merge, publish, distribute, sublicense, and/or sell\ncopies of the Software, and to permit persons to whom the Software is\nfurnished to do so, subject to the following conditions:\n\nThe above copyright notice and this permission notice shall be included in\nall copies or substantial portions of the Software.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\nIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\nFITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\nAUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\nLIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\nOUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\nTHE SOFTWARE.\n\n */\n\n/*\n  File: Core.js\n\n */\n\n/*\n Object: $jit\n \n Defines the namespace for all library Classes and Objects. \n This variable is the *only* global variable defined in the Toolkit. \n There are also other interesting properties attached to this variable described below.\n */\n// START METAMAPS CODE\nconst $jit = function(w) {\n// ORIGINAL:\n// window.$jit = function(w) {\n// END METAMAPS CODE\n  w = w || window;\n  for(var k in $jit) {\n    if($jit[k].$extend) {\n      w[k] = $jit[k];\n    }\n  }\n};\n\n$jit.version = '2.0.1';\n/*\n  Object: $jit.id\n  \n  Works just like *document.getElementById*\n  \n  Example:\n  (start code js)\n  var element = $jit.id('elementId');\n  (end code)\n\n*/\n\n/*\n Object: $jit.util\n \n Contains utility functions.\n \n Some of the utility functions and the Class system were based in the MooTools Framework \n <http://mootools.net>. Copyright (c) 2006-2010 Valerio Proietti, <http://mad4milk.net/>. \n MIT license <http://mootools.net/license.txt>.\n \n These methods are generally also implemented in DOM manipulation frameworks like JQuery, MooTools and Prototype.\n I'd suggest you to use the functions from those libraries instead of using these, since their functions \n are widely used and tested in many different platforms/browsers. Use these functions only if you have to.\n \n */\nvar $ = function(d) {\n  return document.getElementById(d);\n};\n\n$.empty = function() {\n};\n\n/*\n  Method: extend\n  \n  Augment an object by appending another object's properties.\n  \n  Parameters:\n  \n  original - (object) The object to be extended.\n  extended - (object) An object which properties are going to be appended to the original object.\n  \n  Example:\n  (start code js)\n  $jit.util.extend({ 'a': 1, 'b': 2 }, { 'b': 3, 'c': 4 }); //{ 'a':1, 'b': 3, 'c': 4 }\n  (end code)\n*/\n$.extend = function(original, extended) {\n  for ( var key in (extended || {}))\n    original[key] = extended[key];\n  return original;\n};\n\n$.lambda = function(value) {\n  return (typeof value == 'function') ? value : function() {\n    return value;\n  };\n};\n\n$.time = Date.now || function() {\n  return +new Date;\n};\n\n/*\n  Method: splat\n  \n  Returns an array wrapping *obj* if *obj* is not an array. Returns *obj* otherwise.\n  \n  Parameters:\n  \n  obj - (mixed) The object to be wrapped in an array.\n  \n  Example:\n  (start code js)\n  $jit.util.splat(3);   //[3]\n  $jit.util.splat([3]); //[3]\n  (end code)\n*/\n$.splat = function(obj) {\n  var type = $.type(obj);\n  return type ? ((type != 'array') ? [ obj ] : obj) : [];\n};\n\n$.type = function(elem) {\n  var type = $.type.s.call(elem).match(/^\\[object\\s(.*)\\]$/)[1].toLowerCase();\n  if(type != 'object') return type;\n  if(elem && elem.$$family) return elem.$$family;\n  return (elem && elem.nodeName && elem.nodeType == 1)? 'element' : type;\n};\n$.type.s = Object.prototype.toString;\n\n/*\n  Method: each\n  \n  Iterates through an iterable applying *f*.\n  \n  Parameters:\n  \n  iterable - (array) The original array.\n  fn - (function) The function to apply to the array elements.\n  \n  Example:\n  (start code js)\n  $jit.util.each([3, 4, 5], function(n) { alert('number ' + n); });\n  (end code)\n*/\n$.each = function(iterable, fn) {\n  var type = $.type(iterable);\n  if (type == 'object') {\n    for ( var key in iterable)\n      fn(iterable[key], key);\n  } else {\n    for ( var i = 0, l = iterable.length; i < l; i++)\n      fn(iterable[i], i);\n  }\n};\n\n$.indexOf = function(array, item) {\n  if(Array.indexOf) return array.indexOf(item);\n  for(var i=0,l=array.length; i<l; i++) {\n    if(array[i] === item) return i;\n  }\n  return -1;\n};\n\n/*\n  Method: map\n  \n  Maps or collects an array by applying *f*.\n  \n  Parameters:\n  \n  array - (array) The original array.\n  f - (function) The function to apply to the array elements.\n  \n  Example:\n  (start code js)\n  $jit.util.map([3, 4, 5], function(n) { return n*n; }); //[9, 16, 25]\n  (end code)\n*/\n$.map = function(array, f) {\n  var ans = [];\n  $.each(array, function(elem, i) {\n    ans.push(f(elem, i));\n  });\n  return ans;\n};\n\n/*\n  Method: reduce\n  \n  Iteratively applies the binary function *f* storing the result in an accumulator.\n  \n  Parameters:\n  \n  array - (array) The original array.\n  f - (function) The function to apply to the array elements.\n  opt - (optional|mixed) The starting value for the acumulator.\n  \n  Example:\n  (start code js)\n  $jit.util.reduce([3, 4, 5], function(x, y) { return x + y; }, 0); //12\n  (end code)\n*/\n$.reduce = function(array, f, opt) {\n  var l = array.length;\n  if(l==0) return opt;\n  var acum = arguments.length == 3? opt : array[--l];\n  while(l--) {\n    acum = f(acum, array[l]);\n  }\n  return acum;\n};\n\n/*\n  Method: merge\n  \n  Merges n-objects and their sub-objects creating a new, fresh object.\n  \n  Parameters:\n  \n  An arbitrary number of objects.\n  \n  Example:\n  (start code js)\n  $jit.util.merge({ 'a': 1, 'b': 2 }, { 'b': 3, 'c': 4 }); //{ 'a':1, 'b': 3, 'c': 4 }\n  (end code)\n*/\n$.merge = function() {\n  var mix = {};\n  for ( var i = 0, l = arguments.length; i < l; i++) {\n    var object = arguments[i];\n    if ($.type(object) != 'object')\n      continue;\n    for ( var key in object) {\n      var op = object[key], mp = mix[key];\n      mix[key] = (mp && $.type(op) == 'object' && $.type(mp) == 'object') ? $\n          .merge(mp, op) : $.unlink(op);\n    }\n  }\n  return mix;\n};\n\n$.unlink = function(object) {\n  var unlinked;\n  switch ($.type(object)) {\n  case 'object':\n    unlinked = {};\n    for ( var p in object)\n      unlinked[p] = $.unlink(object[p]);\n    break;\n  case 'array':\n    unlinked = [];\n    for ( var i = 0, l = object.length; i < l; i++)\n      unlinked[i] = $.unlink(object[i]);\n    break;\n  default:\n    return object;\n  }\n  return unlinked;\n};\n\n$.zip = function() {\n  if(arguments.length === 0) return [];\n  for(var j=0, ans=[], l=arguments.length, ml=arguments[0].length; j<ml; j++) {\n    for(var i=0, row=[]; i<l; i++) {\n      row.push(arguments[i][j]);\n    }\n    ans.push(row);\n  }\n  return ans;\n};\n\n/*\n  Method: rgbToHex\n  \n  Converts an RGB array into a Hex string.\n  \n  Parameters:\n  \n  srcArray - (array) An array with R, G and B values\n  \n  Example:\n  (start code js)\n  $jit.util.rgbToHex([255, 255, 255]); //'#ffffff'\n  (end code)\n*/\n$.rgbToHex = function(srcArray, array) {\n  if (srcArray.length < 3)\n    return null;\n  if (srcArray.length == 4 && srcArray[3] == 0 && !array)\n    return 'transparent';\n  var hex = [];\n  for ( var i = 0; i < 3; i++) {\n    var bit = (srcArray[i] - 0).toString(16);\n    hex.push(bit.length == 1 ? '0' + bit : bit);\n  }\n  return array ? hex : '#' + hex.join('');\n};\n\n/*\n  Method: hexToRgb\n  \n  Converts an Hex color string into an RGB array.\n  \n  Parameters:\n  \n  hex - (string) A color hex string.\n  \n  Example:\n  (start code js)\n  $jit.util.hexToRgb('#fff'); //[255, 255, 255]\n  (end code)\n*/\n$.hexToRgb = function(hex) {\n  if (hex.length != 7) {\n    hex = hex.match(/^#?(\\w{1,2})(\\w{1,2})(\\w{1,2})$/);\n    hex.shift();\n    if (hex.length != 3)\n      return null;\n    var rgb = [];\n    for ( var i = 0; i < 3; i++) {\n      var value = hex[i];\n      if (value.length == 1)\n        value += value;\n      rgb.push(parseInt(value, 16));\n    }\n    return rgb;\n  } else {\n    hex = parseInt(hex.slice(1), 16);\n    return [ hex >> 16, hex >> 8 & 0xff, hex & 0xff ];\n  }\n};\n\n$.destroy = function(elem) {\n  $.clean(elem);\n  if (elem.parentNode)\n    elem.parentNode.removeChild(elem);\n  if (elem.clearAttributes)\n    elem.clearAttributes();\n};\n\n$.clean = function(elem) {\n  for (var ch = elem.childNodes, i = 0, l = ch.length; i < l; i++) {\n    $.destroy(ch[i]);\n  }\n};\n\n/*\n  Method: addEvent\n  \n  Cross-browser add event listener.\n  \n  Parameters:\n  \n  obj - (obj) The Element to attach the listener to.\n  type - (string) The listener type. For example 'click', or 'mousemove'.\n  fn - (function) The callback function to be used when the event is fired.\n  \n  Example:\n  (start code js)\n  $jit.util.addEvent(elem, 'click', function(){ alert('hello'); });\n  (end code)\n*/\n$.addEvent = function(obj, type, fn) {\n  if (obj.addEventListener)\n    obj.addEventListener(type, fn, false);\n  else\n    obj.attachEvent('on' + type, fn);\n};\n\n$.addEvents = function(obj, typeObj) {\n  for(var type in typeObj) {\n    $.addEvent(obj, type, typeObj[type]);\n  }\n};\n\n$.hasClass = function(obj, klass) {\n  return (' ' + obj.className + ' ').indexOf(' ' + klass + ' ') > -1;\n};\n\n$.addClass = function(obj, klass) {\n  if (!$.hasClass(obj, klass))\n    obj.className = (obj.className + \" \" + klass);\n};\n\n$.removeClass = function(obj, klass) {\n  obj.className = obj.className.replace(new RegExp(\n      '(^|\\\\s)' + klass + '(?:\\\\s|$)'), '$1');\n};\n\n$.getPos = function(elem) {\n  var offset = getOffsets(elem);\n  var scroll = getScrolls(elem);\n  return {\n    x: offset.x - scroll.x,\n    y: offset.y - scroll.y\n  };\n\n  function getOffsets(elem) {\n    var position = {\n      x: 0,\n      y: 0\n    };\n    while (elem && !isBody(elem)) {\n      position.x += elem.offsetLeft;\n      position.y += elem.offsetTop;\n      elem = elem.offsetParent;\n    }\n    return position;\n  }\n\n  function getScrolls(elem) {\n    var position = {\n      x: 0,\n      y: 0\n    };\n    while (elem && !isBody(elem)) {\n      position.x += elem.scrollLeft;\n      position.y += elem.scrollTop;\n      elem = elem.parentNode;\n    }\n    return position;\n  }\n\n  function isBody(element) {\n    return (/^(?:body|html)$/i).test(element.tagName);\n  }\n};\n\n$.event = {\n  get: function(e, win) {\n    win = win || window;\n    return e || win.event;\n  },\n  getWheel: function(e) {\n    return e.wheelDelta? e.wheelDelta / 120 : -(e.detail || 0) / 3;\n  },\n  isRightClick: function(e) {\n    return (e.which == 3 || e.button == 2);\n  },\n  getPos: function(e, win) {\n    // get mouse position\n    win = win || window;\n    e = e || win.event;\n    var doc = win.document;\n    doc = doc.documentElement || doc.body;\n    //TODO(nico): make touch event handling better\n    if(e.touches && e.touches.length) {\n      e = e.touches[0];\n    }\n    var page = {\n      x: e.pageX || (e.clientX + doc.scrollLeft),\n      y: e.pageY || (e.clientY + doc.scrollTop)\n    };\n    return page;\n  },\n  stop: function(e) {\n    if (e.stopPropagation) e.stopPropagation();\n    e.cancelBubble = true;\n    if (e.preventDefault) e.preventDefault();\n    else e.returnValue = false;\n  }\n};\n\n$jit.util = $jit.id = $;\n\nvar Class = function(properties) {\n  properties = properties || {};\n  var klass = function() {\n    for ( var key in this) {\n      if (typeof this[key] != 'function')\n        this[key] = $.unlink(this[key]);\n    }\n    this.constructor = klass;\n    if (Class.prototyping)\n      return this;\n    var instance = this.initialize ? this.initialize.apply(this, arguments)\n        : this;\n    //typize\n    this.$$family = 'class';\n    return instance;\n  };\n\n  for ( var mutator in Class.Mutators) {\n    if (!properties[mutator])\n      continue;\n    properties = Class.Mutators[mutator](properties, properties[mutator]);\n    delete properties[mutator];\n  }\n\n  $.extend(klass, this);\n  klass.constructor = Class;\n  klass.prototype = properties;\n  return klass;\n};\n\nClass.Mutators = {\n\n  Implements: function(self, klasses) {\n    $.each($.splat(klasses), function(klass) {\n      Class.prototyping = klass;\n      var instance = (typeof klass == 'function') ? new klass : klass;\n      for ( var prop in instance) {\n        if (!(prop in self)) {\n          self[prop] = instance[prop];\n        }\n      }\n      delete Class.prototyping;\n    });\n    return self;\n  }\n\n};\n\n$.extend(Class, {\n\n  inherit: function(object, properties) {\n    for ( var key in properties) {\n      var override = properties[key];\n      var previous = object[key];\n      var type = $.type(override);\n      if (previous && type == 'function') {\n        if (override != previous) {\n          Class.override(object, key, override);\n        }\n      } else if (type == 'object') {\n        object[key] = $.merge(previous, override);\n      } else {\n        object[key] = override;\n      }\n    }\n    return object;\n  },\n\n  override: function(object, name, method) {\n    var parent = Class.prototyping;\n    if (parent && object[name] != parent[name])\n      parent = null;\n    var override = function() {\n      var previous = this.parent;\n      this.parent = parent ? parent[name] : object[name];\n      var value = method.apply(this, arguments);\n      this.parent = previous;\n      return value;\n    };\n    object[name] = override;\n  }\n\n});\n\nClass.prototype.implement = function() {\n  var proto = this.prototype;\n  $.each(Array.prototype.slice.call(arguments || []), function(properties) {\n    Class.inherit(proto, properties);\n  });\n  return this;\n};\n\n$jit.Class = Class;\n\n/*\n  Object: $jit.json\n  \n  Provides JSON utility functions.\n  \n  Most of these functions are JSON-tree traversal and manipulation functions.\n*/\n$jit.json = {\n  /*\n     Method: prune\n  \n     Clears all tree nodes having depth greater than maxLevel.\n  \n     Parameters:\n  \n        tree - (object) A JSON tree object. For more information please see <Loader.loadJSON>.\n        maxLevel - (number) An integer specifying the maximum level allowed for this tree. All nodes having depth greater than max level will be deleted.\n\n  */\n  prune: function(tree, maxLevel) {\n    this.each(tree, function(elem, i) {\n      if (i == maxLevel && elem.children) {\n        delete elem.children;\n        elem.children = [];\n      }\n    });\n  },\n  /*\n     Method: getParent\n  \n     Returns the parent node of the node having _id_ as id.\n  \n     Parameters:\n  \n        tree - (object) A JSON tree object. See also <Loader.loadJSON>.\n        id - (string) The _id_ of the child node whose parent will be returned.\n\n    Returns:\n\n        A tree JSON node if any, or false otherwise.\n  \n  */\n  getParent: function(tree, id) {\n    if (tree.id == id)\n      return false;\n    var ch = tree.children;\n    if (ch && ch.length > 0) {\n      for ( var i = 0; i < ch.length; i++) {\n        if (ch[i].id == id)\n          return tree;\n        else {\n          var ans = this.getParent(ch[i], id);\n          if (ans)\n            return ans;\n        }\n      }\n    }\n    return false;\n  },\n  /*\n     Method: getSubtree\n  \n     Returns the subtree that matches the given id.\n  \n     Parameters:\n  \n        tree - (object) A JSON tree object. See also <Loader.loadJSON>.\n        id - (string) A node *unique* identifier.\n  \n     Returns:\n  \n        A subtree having a root node matching the given id. Returns null if no subtree matching the id is found.\n\n  */\n  getSubtree: function(tree, id) {\n    if (tree.id == id)\n      return tree;\n    for ( var i = 0, ch = tree.children; ch && i < ch.length; i++) {\n      var t = this.getSubtree(ch[i], id);\n      if (t != null)\n        return t;\n    }\n    return null;\n  },\n  /*\n     Method: eachLevel\n  \n      Iterates on tree nodes with relative depth less or equal than a specified level.\n  \n     Parameters:\n  \n        tree - (object) A JSON tree or subtree. See also <Loader.loadJSON>.\n        initLevel - (number) An integer specifying the initial relative level. Usually zero.\n        toLevel - (number) An integer specifying a top level. This method will iterate only through nodes with depth less than or equal this number.\n        action - (function) A function that receives a node and an integer specifying the actual level of the node.\n          \n    Example:\n   (start code js)\n     $jit.json.eachLevel(tree, 0, 3, function(node, depth) {\n        alert(node.name + ' ' + depth);\n     });\n   (end code)\n  */\n  eachLevel: function(tree, initLevel, toLevel, action) {\n    if (initLevel <= toLevel) {\n      action(tree, initLevel);\n      if(!tree.children) return;\n      for ( var i = 0, ch = tree.children; i < ch.length; i++) {\n        this.eachLevel(ch[i], initLevel + 1, toLevel, action);\n      }\n    }\n  },\n  /*\n     Method: each\n  \n      A JSON tree iterator.\n  \n     Parameters:\n  \n        tree - (object) A JSON tree or subtree. See also <Loader.loadJSON>.\n        action - (function) A function that receives a node.\n\n    Example:\n    (start code js)\n      $jit.json.each(tree, function(node) {\n        alert(node.name);\n      });\n    (end code)\n          \n  */\n  each: function(tree, action) {\n    this.eachLevel(tree, 0, Number.MAX_VALUE, action);\n  }\n};\n\n\n/*\n     An object containing multiple type of transformations. \n*/\n\n$jit.Trans = {\n  $extend: true,\n  \n  linear: function(p){\n    return p;\n  }\n};\n\nvar Trans = $jit.Trans;\n\n(function(){\n\n  var makeTrans = function(transition, params){\n    params = $.splat(params);\n    return $.extend(transition, {\n      easeIn: function(pos){\n        return transition(pos, params);\n      },\n      easeOut: function(pos){\n        return 1 - transition(1 - pos, params);\n      },\n      easeInOut: function(pos){\n        return (pos <= 0.5)? transition(2 * pos, params) / 2 : (2 - transition(\n            2 * (1 - pos), params)) / 2;\n      }\n    });\n  };\n\n  var transitions = {\n\n    Pow: function(p, x){\n      return Math.pow(p, x[0] || 6);\n    },\n\n    Expo: function(p){\n      return Math.pow(2, 8 * (p - 1));\n    },\n\n    Circ: function(p){\n      return 1 - Math.sin(Math.acos(p));\n    },\n\n    Sine: function(p){\n      return 1 - Math.sin((1 - p) * Math.PI / 2);\n    },\n\n    Back: function(p, x){\n      x = x[0] || 1.618;\n      return Math.pow(p, 2) * ((x + 1) * p - x);\n    },\n\n    Bounce: function(p){\n      var value;\n      for ( var a = 0, b = 1; 1; a += b, b /= 2) {\n        if (p >= (7 - 4 * a) / 11) {\n          value = b * b - Math.pow((11 - 6 * a - 11 * p) / 4, 2);\n          break;\n        }\n      }\n      return value;\n    },\n\n    Elastic: function(p, x){\n      return Math.pow(2, 10 * --p)\n          * Math.cos(20 * p * Math.PI * (x[0] || 1) / 3);\n    }\n\n  };\n\n  $.each(transitions, function(val, key){\n    Trans[key] = makeTrans(val);\n  });\n\n  $.each( [\n      'Quad', 'Cubic', 'Quart', 'Quint'\n  ], function(elem, i){\n    Trans[elem] = makeTrans(function(p){\n      return Math.pow(p, [\n        i + 2\n      ]);\n    });\n  });\n\n})();\n\n/*\n   A Class that can perform animations for generic objects.\n\n   If you are looking for animation transitions please take a look at the <Trans> object.\n\n   Used by:\n\n   <Graph.Plot>\n   \n   Based on:\n   \n   The Animation class is based in the MooTools Framework <http://mootools.net>. Copyright (c) 2006-2009 Valerio Proietti, <http://mad4milk.net/>. MIT license <http://mootools.net/license.txt>.\n\n*/\n\nvar Animation = new Class( {\n\n  initialize: function(options){\n    this.setOptions(options);\n  },\n\n  setOptions: function(options){\n    var opt = {\n      duration: 2500,\n      fps: 40,\n      transition: Trans.Quart.easeInOut,\n      compute: $.empty,\n      complete: $.empty,\n      link: 'ignore'\n    };\n    this.opt = $.merge(opt, options || {});\n    return this;\n  },\n\n  step: function(){\n    var time = $.time(), opt = this.opt;\n    if (time < this.time + opt.duration) {\n      var delta = opt.transition((time - this.time) / opt.duration);\n      opt.compute(delta);\n    } else {\n      this.timer = clearInterval(this.timer);\n      opt.compute(1);\n      opt.complete();\n    }\n  },\n\n  start: function(){\n    if (!this.check())\n      return this;\n    this.time = 0;\n    this.startTimer();\n    return this;\n  },\n\n  startTimer: function(){\n    var that = this, fps = this.opt.fps;\n    if (this.timer)\n      return false;\n    this.time = $.time() - this.time;\n    this.timer = setInterval((function(){\n      that.step();\n    }), Math.round(1000 / fps));\n    return true;\n  },\n\n  pause: function(){\n    this.stopTimer();\n    return this;\n  },\n\n  resume: function(){\n    this.startTimer();\n    return this;\n  },\n\n  stopTimer: function(){\n    if (!this.timer)\n      return false;\n    this.time = $.time() - this.time;\n    this.timer = clearInterval(this.timer);\n    return true;\n  },\n\n  check: function(){\n    if (!this.timer)\n      return true;\n    if (this.opt.link == 'cancel') {\n      this.stopTimer();\n      return true;\n    }\n    return false;\n  }\n});\n\n\nvar Options = function() {\n  var args = arguments;\n  for(var i=0, l=args.length, ans={}; i<l; i++) {\n    var opt = Options[args[i]];\n    if(opt.$extend) {\n      $.extend(ans, opt);\n    } else {\n      ans[args[i]] = opt;  \n    }\n  }\n  return ans;\n};\n\n/*\n * File: Options.Canvas.js\n *\n*/\n\n/*\n  Object: Options.Canvas\n  \n  These are Canvas general options, like where to append it in the DOM, its dimensions, background, \n  and other more advanced options.\n  \n  Syntax:\n  \n  (start code js)\n\n  Options.Canvas = {\n    injectInto: 'id',\n    type: '2D', //'3D'\n    width: false,\n    height: false,\n    useCanvas: false,\n    withLabels: true,\n    background: false\n  };  \n  (end code)\n  \n  Example:\n  \n  (start code js)\n  var viz = new $jit.Viz({\n    injectInto: 'someContainerId',\n    width: 500,\n    height: 700\n  });\n  (end code)\n  \n  Parameters:\n  \n  injectInto - *required* (string|element) The id of the DOM container for the visualization. It can also be an Element provided that it has an id.\n  type - (string) Context type. Default's 2D but can be 3D for webGL enabled browsers.\n  width - (number) Default's to the *container's offsetWidth*. The width of the canvas.\n  height - (number) Default's to the *container's offsetHeight*. The height of the canvas.\n  useCanvas - (boolean|object) Default's *false*. You can pass another <Canvas> instance to be used by the visualization.\n  withLabels - (boolean) Default's *true*. Whether to use a label container for the visualization.\n  background - (boolean|object) Default's *false*. An object containing information about the rendering of a background canvas.\n*/\n\nOptions.Canvas = {\n    $extend: true,\n    \n    injectInto: 'id',\n    type: '2D',\n    width: false,\n    height: false,\n    useCanvas: false,\n    withLabels: true,\n    background: false,\n    \n    Scene: {\n      Lighting: {\n        enable: false,\n        ambient: [1, 1, 1],\n        directional: {\n          direction: { x: -100, y: -100, z: -100 },\n          color: [0.5, 0.3, 0.1]\n        }\n      }\n    }\n};\n\n/*\n * File: Options.Node.js\n *\n*/\n\n/*\n  Object: Options.Node\n\n  Provides Node rendering options for Tree and Graph based visualizations.\n\n  Syntax:\n    \n  (start code js)\n  Options.Node = {\n    overridable: false,\n    type: 'circle',\n    color: '#ccb',\n    alpha: 1,\n    dim: 3,\n    height: 20,\n    width: 90,\n    autoHeight: false,\n    autoWidth: false,\n    lineWidth: 1,\n    transform: true,\n    align: \"center\",\n    angularWidth:1,\n    span:1,\n    CanvasStyles: {}\n  };\n  (end code)\n  \n  Example:\n  \n  (start code js)\n  var viz = new $jit.Viz({\n    Node: {\n      overridable: true,\n      width: 30,\n      autoHeight: true,\n      type: 'rectangle'\n    }\n  });\n  (end code)\n  \n  Parameters:\n\n  overridable - (boolean) Default's *false*. Determine whether or not general node properties can be overridden by a particular <Graph.Node>.\n  type - (string) Default's *circle*. Node's shape. Node built-in types include 'circle', 'rectangle', 'square', 'ellipse', 'triangle', 'star'. The default Node type might vary in each visualization. You can also implement (non built-in) custom Node types into your visualizations.\n  color - (string) Default's *#ccb*. Node color.\n  alpha - (number) Default's *1*. The Node's alpha value. *1* is for full opacity.\n  dim - (number) Default's *3*. An extra parameter used by 'circle', 'square', 'triangle' and 'star' node types. Depending on each shape, this parameter can set the radius of a circle, half the length of the side of a square, half the base and half the height of a triangle or the length of a side of a star (concave decagon).\n  height - (number) Default's *20*. Used by 'rectangle' and 'ellipse' node types. The height of the node shape.\n  width - (number) Default's *90*. Used by 'rectangle' and 'ellipse' node types. The width of the node shape.\n  autoHeight - (boolean) Default's *false*. Whether to set an auto height for the node depending on the content of the Node's label.\n  autoWidth - (boolean) Default's *false*. Whether to set an auto width for the node depending on the content of the Node's label.\n  lineWidth - (number) Default's *1*. Used only by some Node shapes. The line width of the strokes of a node.\n  transform - (boolean) Default's *true*. Only used by the <Hypertree> visualization. Whether to scale the nodes according to the moebius transformation.\n  align - (string) Default's *center*. Possible values are 'center', 'left' or 'right'. Used only by the <ST> visualization, these parameters are used for aligning nodes when some of they dimensions vary.\n  angularWidth - (number) Default's *1*. Used in radial layouts (like <RGraph> or <Sunburst> visualizations). The amount of relative 'space' set for a node.\n  span - (number) Default's *1*. Used in radial layouts (like <RGraph> or <Sunburst> visualizations). The angle span amount set for a node.\n  CanvasStyles - (object) Default's an empty object (i.e. {}). Attach any other canvas specific property that you'd set to the canvas context before plotting a Node.\n\n*/\nOptions.Node = {\n  $extend: false,\n  \n  overridable: false,\n  type: 'circle',\n  color: '#ccb',\n  alpha: 1,\n  dim: 3,\n  height: 20,\n  width: 90,\n  autoHeight: false,\n  autoWidth: false,\n  lineWidth: 1,\n  transform: true,\n  align: \"center\",\n  angularWidth:1,\n  span:1,\n  //Raw canvas styles to be\n  //applied to the context instance\n  //before plotting a node\n  CanvasStyles: {}\n};\n\n\n/*\n * File: Options.Edge.js\n *\n*/\n\n/*\n  Object: Options.Edge\n\n  Provides Edge rendering options for Tree and Graph based visualizations.\n\n  Syntax:\n    \n  (start code js)\n  Options.Edge = {\n    overridable: false,\n    type: 'line',\n    color: '#ccb',\n    lineWidth: 1,\n    dim:15,\n    alpha: 1,\n    CanvasStyles: {}\n  };\n  (end code)\n  \n  Example:\n  \n  (start code js)\n  var viz = new $jit.Viz({\n    Edge: {\n      overridable: true,\n      type: 'line',\n      color: '#fff',\n      CanvasStyles: {\n        shadowColor: '#ccc',\n        shadowBlur: 10\n      }\n    }\n  });\n  (end code)\n  \n  Parameters:\n    \n   overridable - (boolean) Default's *false*. Determine whether or not general edges properties can be overridden by a particular <Graph.Adjacence>.\n   type - (string) Default's 'line'. Edge styles include 'line', 'hyperline', 'arrow'. The default Edge type might vary in each visualization. You can also implement custom Edge types.\n   color - (string) Default's '#ccb'. Edge color.\n   lineWidth - (number) Default's *1*. Line/Edge width.\n   alpha - (number) Default's *1*. The Edge's alpha value. *1* is for full opacity.\n   dim - (number) Default's *15*. An extra parameter used by other complex shapes such as quadratic, bezier or arrow, to determine the shape's diameter.\n   epsilon - (number) Default's *7*. Only used when using *enableForEdges* in <Options.Events>. This dimension is used to create an area for the line where the contains method for the edge returns *true*.\n   CanvasStyles - (object) Default's an empty object (i.e. {}). Attach any other canvas specific property that you'd set to the canvas context before plotting an Edge.\n\n  See also:\n   \n   If you want to know more about how to customize Node/Edge data per element, in the JSON or programmatically, take a look at this article.\n*/\nOptions.Edge = {\n  $extend: false,\n  \n  overridable: false,\n  type: 'line',\n  color: '#ccb',\n  lineWidth: 1,\n  dim:15,\n  alpha: 1,\n  epsilon: 7,\n\n  //Raw canvas styles to be\n  //applied to the context instance\n  //before plotting an edge\n  CanvasStyles: {}\n};\n\n\n/*\n * File: Options.Fx.js\n *\n*/\n\n/*\n  Object: Options.Fx\n\n  Provides animation options like duration of the animations, frames per second and animation transitions.  \n\n  Syntax:\n  \n  (start code js)\n    Options.Fx = {\n      fps:40,\n      duration: 2500,\n      transition: $jit.Trans.Quart.easeInOut,\n      clearCanvas: true\n    };\n  (end code)\n  \n  Example:\n  \n  (start code js)\n  var viz = new $jit.Viz({\n    duration: 1000,\n    fps: 35,\n    transition: $jit.Trans.linear\n  });\n  (end code)\n  \n  Parameters:\n  \n  clearCanvas - (boolean) Default's *true*. Whether to clear the frame/canvas when the viz is plotted or animated.\n  duration - (number) Default's *2500*. Duration of the animation in milliseconds.\n  fps - (number) Default's *40*. Frames per second.\n  transition - (object) Default's *$jit.Trans.Quart.easeInOut*. The transition used for the animations. See below for a more detailed explanation.\n  \n  Object: $jit.Trans\n  \n  This object is used for specifying different animation transitions in all visualizations.\n\n  There are many different type of animation transitions.\n\n  linear:\n\n  Displays a linear transition\n\n  >Trans.linear\n  \n  (see Linear.png)\n\n  Quad:\n\n  Displays a Quadratic transition.\n\n  >Trans.Quad.easeIn\n  >Trans.Quad.easeOut\n  >Trans.Quad.easeInOut\n  \n (see Quad.png)\n\n Cubic:\n\n Displays a Cubic transition.\n\n >Trans.Cubic.easeIn\n >Trans.Cubic.easeOut\n >Trans.Cubic.easeInOut\n\n (see Cubic.png)\n\n Quart:\n\n Displays a Quartetic transition.\n\n >Trans.Quart.easeIn\n >Trans.Quart.easeOut\n >Trans.Quart.easeInOut\n\n (see Quart.png)\n\n Quint:\n\n Displays a Quintic transition.\n\n >Trans.Quint.easeIn\n >Trans.Quint.easeOut\n >Trans.Quint.easeInOut\n\n (see Quint.png)\n\n Expo:\n\n Displays an Exponential transition.\n\n >Trans.Expo.easeIn\n >Trans.Expo.easeOut\n >Trans.Expo.easeInOut\n\n (see Expo.png)\n\n Circ:\n\n Displays a Circular transition.\n\n >Trans.Circ.easeIn\n >Trans.Circ.easeOut\n >Trans.Circ.easeInOut\n\n (see Circ.png)\n\n Sine:\n\n Displays a Sineousidal transition.\n\n >Trans.Sine.easeIn\n >Trans.Sine.easeOut\n >Trans.Sine.easeInOut\n\n (see Sine.png)\n\n Back:\n\n >Trans.Back.easeIn\n >Trans.Back.easeOut\n >Trans.Back.easeInOut\n\n (see Back.png)\n\n Bounce:\n\n Bouncy transition.\n\n >Trans.Bounce.easeIn\n >Trans.Bounce.easeOut\n >Trans.Bounce.easeInOut\n\n (see Bounce.png)\n\n Elastic:\n\n Elastic curve.\n\n >Trans.Elastic.easeIn\n >Trans.Elastic.easeOut\n >Trans.Elastic.easeInOut\n\n (see Elastic.png)\n \n Based on:\n     \n Easing and Transition animation methods are based in the MooTools Framework <http://mootools.net>. Copyright (c) 2006-2010 Valerio Proietti, <http://mad4milk.net/>. MIT license <http://mootools.net/license.txt>.\n\n\n*/\nOptions.Fx = {\n  $extend: true,\n  \n  fps:40,\n  duration: 2500,\n  transition: $jit.Trans.Quart.easeInOut,\n  clearCanvas: true\n};\n\n/*\n * File: Options.Label.js\n *\n*/\n/*\n  Object: Options.Label\n\n  Provides styling for Labels such as font size, family, etc. Also sets Node labels as HTML, SVG or Native canvas elements.  \n\n  Syntax:\n  \n  (start code js)\n    Options.Label = {\n      overridable: false,\n      type: 'HTML', //'SVG', 'Native'\n      style: ' ',\n      size: 10,\n      family: 'sans-serif',\n      textAlign: 'center',\n      textBaseline: 'alphabetic',\n      color: '#fff'\n    };\n  (end code)\n  \n  Example:\n  \n  (start code js)\n  var viz = new $jit.Viz({\n    Label: {\n      type: 'Native',\n      size: 11,\n      color: '#ccc'\n    }\n  });\n  (end code)\n  \n  Parameters:\n    \n  overridable - (boolean) Default's *false*. Determine whether or not general label properties can be overridden by a particular <Graph.Node>.\n  type - (string) Default's *HTML*. The type for the labels. Can be 'HTML', 'SVG' or 'Native' canvas labels.\n  style - (string) Default's *empty string*. Can be 'italic' or 'bold'. This parameter is only taken into account when using 'Native' canvas labels. For DOM based labels the className *node* is added to the DOM element for styling via CSS. You can also use <Options.Controller> methods to style individual labels.\n  size - (number) Default's *10*. The font's size. This parameter is only taken into account when using 'Native' canvas labels. For DOM based labels the className *node* is added to the DOM element for styling via CSS. You can also use <Options.Controller> methods to style individual labels.\n  family - (string) Default's *sans-serif*. The font's family. This parameter is only taken into account when using 'Native' canvas labels. For DOM based labels the className *node* is added to the DOM element for styling via CSS. You can also use <Options.Controller> methods to style individual labels.\n  color - (string) Default's *#fff*. The font's color. This parameter is only taken into account when using 'Native' canvas labels. For DOM based labels the className *node* is added to the DOM element for styling via CSS. You can also use <Options.Controller> methods to style individual labels.\n*/\nOptions.Label = {\n  $extend: false,\n  \n  overridable: false,\n  type: 'HTML', //'SVG', 'Native'\n  style: ' ',\n  size: 10,\n  family: 'sans-serif',\n  textAlign: 'center',\n  textBaseline: 'alphabetic',\n  color: '#fff'\n};\n\n\n/*\n * File: Options.Tips.js\n *\n */\n\n/*\n  Object: Options.Tips\n  \n  Tips options\n  \n  Syntax:\n    \n  (start code js)\n  Options.Tips = {\n    enable: false,\n    type: 'auto',\n    offsetX: 20,\n    offsetY: 20,\n    onShow: $.empty,\n    onHide: $.empty\n  };\n  (end code)\n  \n  Example:\n  \n  (start code js)\n  var viz = new $jit.Viz({\n    Tips: {\n      enable: true,\n      type: 'Native',\n      offsetX: 10,\n      offsetY: 10,\n      onShow: function(tip, node) {\n        tip.innerHTML = node.name;\n      }\n    }\n  });\n  (end code)\n\n  Parameters:\n\n  enable - (boolean) Default's *false*. If *true*, a tooltip will be shown when a node is hovered. The tooltip is a div DOM element having \"tip\" as CSS class. \n  type - (string) Default's *auto*. Defines where to attach the MouseEnter/Leave tooltip events. Possible values are 'Native' to attach them to the canvas or 'HTML' to attach them to DOM label elements (if defined). 'auto' sets this property to the value of <Options.Label>'s *type* property.\n  offsetX - (number) Default's *20*. An offset added to the current tooltip x-position (which is the same as the current mouse position). Default's 20.\n  offsetY - (number) Default's *20*. An offset added to the current tooltip y-position (which is the same as the current mouse position). Default's 20.\n  onShow(tip, node) - This callack is used right before displaying a tooltip. The first formal parameter is the tip itself (which is a DivElement). The second parameter may be a <Graph.Node> for graph based visualizations or an object with label, value properties for charts.\n  onHide() - This callack is used when hiding a tooltip.\n\n*/\nOptions.Tips = {\n  $extend: false,\n  \n  enable: false,\n  type: 'auto',\n  offsetX: 20,\n  offsetY: 20,\n  force: false,\n  onShow: $.empty,\n  onHide: $.empty\n};\n\n\n/*\n * File: Options.NodeStyles.js\n *\n */\n\n/*\n  Object: Options.NodeStyles\n  \n  Apply different styles when a node is hovered or selected.\n  \n  Syntax:\n    \n  (start code js)\n  Options.NodeStyles = {\n    enable: false,\n    type: 'auto',\n    stylesHover: false,\n    stylesClick: false\n  };\n  (end code)\n  \n  Example:\n  \n  (start code js)\n  var viz = new $jit.Viz({\n    NodeStyles: {\n      enable: true,\n      type: 'Native',\n      stylesHover: {\n        dim: 30,\n        color: '#fcc'\n      },\n      duration: 600\n    }\n  });\n  (end code)\n\n  Parameters:\n  \n  enable - (boolean) Default's *false*. Whether to enable this option.\n  type - (string) Default's *auto*. Use this to attach the hover/click events in the nodes or the nodes labels (if they have been defined as DOM elements: 'HTML' or 'SVG', see <Options.Label> for more details). The default 'auto' value will set NodeStyles to the same type defined for <Options.Label>.\n  stylesHover - (boolean|object) Default's *false*. An object with node styles just like the ones defined for <Options.Node> or *false* otherwise.\n  stylesClick - (boolean|object) Default's *false*. An object with node styles just like the ones defined for <Options.Node> or *false* otherwise.\n*/\n\nOptions.NodeStyles = {\n  $extend: false,\n  \n  enable: false,\n  type: 'auto',\n  stylesHover: false,\n  stylesClick: false\n};\n\n\n/*\n * File: Options.Events.js\n *\n*/\n\n/*\n  Object: Options.Events\n  \n  Configuration for adding mouse/touch event handlers to Nodes.\n  \n  Syntax:\n  \n  (start code js)\n  Options.Events = {\n    enable: false,\n    enableForEdges: false,\n    type: 'auto',\n    onClick: $.empty,\n    onRightClick: $.empty,\n    onMouseMove: $.empty,\n    onMouseEnter: $.empty,\n    onMouseLeave: $.empty,\n    onDragStart: $.empty,\n    onDragMove: $.empty,\n    onDragCancel: $.empty,\n    onDragEnd: $.empty,\n    onTouchStart: $.empty,\n    onTouchMove: $.empty,\n    onTouchEnd: $.empty,\n    onTouchCancel: $.empty,\n    onMouseWheel: $.empty\n  };\n  (end code)\n  \n  Example:\n  \n  (start code js)\n  var viz = new $jit.Viz({\n    Events: {\n      enable: true,\n      onClick: function(node, eventInfo, e) {\n        viz.doSomething();\n      },\n      onMouseEnter: function(node, eventInfo, e) {\n        viz.canvas.getElement().style.cursor = 'pointer';\n      },\n      onMouseLeave: function(node, eventInfo, e) {\n        viz.canvas.getElement().style.cursor = '';\n      }\n    }\n  });\n  (end code)\n  \n  Parameters:\n  \n  enable - (boolean) Default's *false*. Whether to enable the Event system.\n  enableForEdges - (boolean) Default's *false*. Whether to track events also in arcs. If *true* the same callbacks -described below- are used for nodes *and* edges. A simple duck type check for edges is to check for *node.nodeFrom*.\n  type - (string) Default's 'auto'. Whether to attach the events onto the HTML labels (via event delegation) or to use the custom 'Native' canvas Event System of the library. 'auto' is set when you let the <Options.Label> *type* parameter decide this.\n  onClick(node, eventInfo, e) - Triggered when a user performs a click in the canvas. *node* is the <Graph.Node> clicked or false if no node has been clicked. *e* is the grabbed event (should return the native event in a cross-browser manner). *eventInfo* is an object containing useful methods like *getPos* to get the mouse position relative to the canvas. \n  onRightClick(node, eventInfo, e) - Triggered when a user performs a right click in the canvas. *node* is the <Graph.Node> right clicked or false if no node has been clicked. *e* is the grabbed event (should return the native event in a cross-browser manner). *eventInfo* is an object containing useful methods like *getPos* to get the mouse position relative to the canvas. \n  onMouseMove(node, eventInfo, e) - Triggered when the user moves the mouse. *node* is the <Graph.Node> under the cursor as it's moving over the canvas or false if no node has been clicked. *e* is the grabbed event (should return the native event in a cross-browser manner).  *eventInfo* is an object containing useful methods like *getPos* to get the mouse position relative to the canvas.\n  onMouseEnter(node, eventInfo, e) - Triggered when a user moves the mouse over a node. *node* is the <Graph.Node> that the mouse just entered. *e* is the grabbed event (should return the native event in a cross-browser manner). *eventInfo* is an object containing useful methods like *getPos* to get the mouse position relative to the canvas. \n  onMouseLeave(node, eventInfo, e) - Triggered when the user mouse-outs a node. *node* is the <Graph.Node> 'mouse-outed'. *e* is the grabbed event (should return the native event in a cross-browser manner). *eventInfo* is an object containing useful methods like *getPos* to get the mouse position relative to the canvas. \n  onDragStart(node, eventInfo, e) - Triggered when the user mouse-downs over a node. *node* is the <Graph.Node> being pressed. *e* is the grabbed event (should return the native event in a cross-browser manner). *eventInfo* is an object containing useful methods like *getPos* to get the mouse position relative to the canvas. \n  onDragMove(node, eventInfo, e) - Triggered when a user, after pressing the mouse button over a node, moves the mouse around. *node* is the <Graph.Node> being dragged. *e* is the grabbed event (should return the native event in a cross-browser manner). *eventInfo* is an object containing useful methods like *getPos* to get the mouse position relative to the canvas. \n  onDragEnd(node, eventInfo, e) - Triggered when a user finished dragging a node. *node* is the <Graph.Node> being dragged. *e* is the grabbed event (should return the native event in a cross-browser manner). *eventInfo* is an object containing useful methods like *getPos* to get the mouse position relative to the canvas. \n  onDragCancel(node, eventInfo, e) - Triggered when the user releases the mouse button over a <Graph.Node> that wasn't dragged (i.e. the user didn't perform any mouse movement after pressing the mouse button). *node* is the <Graph.Node> being dragged. *e* is the grabbed event (should return the native event in a cross-browser manner). *eventInfo* is an object containing useful methods like *getPos* to get the mouse position relative to the canvas. \n  onTouchStart(node, eventInfo, e) - Behaves just like onDragStart. \n  onTouchMove(node, eventInfo, e) - Behaves just like onDragMove. \n  onTouchEnd(node, eventInfo, e) - Behaves just like onDragEnd. \n  onTouchCancel(node, eventInfo, e) - Behaves just like onDragCancel.\n  onMouseWheel(delta, e) - Triggered when the user uses the mouse scroll over the canvas. *delta* is 1 or -1 depending on the sense of the mouse scroll.\n*/\n\nOptions.Events = {\n  $extend: false,\n  \n  enable: false,\n  enableForEdges: false,\n  type: 'auto',\n  onClick: $.empty,\n  onRightClick: $.empty,\n  onMouseMove: $.empty,\n  onMouseEnter: $.empty,\n  onMouseLeave: $.empty,\n  onDragStart: $.empty,\n  onDragMove: $.empty,\n  onDragCancel: $.empty,\n  onDragEnd: $.empty,\n  onTouchStart: $.empty,\n  onTouchMove: $.empty,\n  onTouchEnd: $.empty,\n  onMouseWheel: $.empty\n};\n\n/*\n * File: Options.Navigation.js\n *\n*/\n\n/*\n  Object: Options.Navigation\n  \n  Panning and zooming options for Graph/Tree based visualizations. These options are implemented \n  by all visualizations except charts (<AreaChart>, <BarChart> and <PieChart>).\n  \n  Syntax:\n  \n  (start code js)\n\n  Options.Navigation = {\n    enable: false,\n    type: 'auto',\n    panning: false, //true, 'avoid nodes'\n    zooming: false\n  };\n  \n  (end code)\n  \n  Example:\n    \n  (start code js)\n  var viz = new $jit.Viz({\n    Navigation: {\n      enable: true,\n      panning: 'avoid nodes',\n      zooming: 20\n    }\n  });\n  (end code)\n  \n  Parameters:\n  \n  enable - (boolean) Default's *false*. Whether to enable Navigation capabilities.\n  type - (string) Default's 'auto'. Whether to attach the navigation events onto the HTML labels (via event delegation) or to use the custom 'Native' canvas Event System of the library. When 'auto' set when you let the <Options.Label> *type* parameter decide this.\n  panning - (boolean|string) Default's *false*. Set this property to *true* if you want to add Drag and Drop panning support to the visualization. You can also set this parameter to 'avoid nodes' to enable DnD panning but disable it if the DnD is taking place over a node. This is useful when some other events like Drag & Drop for nodes are added to <Graph.Nodes>.\n  zooming - (boolean|number) Default's *false*. Set this property to a numeric value to turn mouse-scroll zooming on. The number will be proportional to the mouse-scroll sensitivity.\n  \n*/\n\nOptions.Navigation = {\n  $extend: false,\n  \n  enable: false,\n  type: 'auto',\n  panning: false, //true | 'avoid nodes'\n  zooming: false\n};\n\n/*\n * File: Options.Controller.js\n *\n*/\n\n/*\n  Object: Options.Controller\n  \n  Provides controller methods. Controller methods are callback functions that get called at different stages \n  of the animation, computing or plotting of the visualization.\n  \n  Implemented by:\n    \n  All visualizations except charts (<AreaChart>, <BarChart> and <PieChart>).\n  \n  Syntax:\n  \n  (start code js)\n\n  Options.Controller = {\n    onBeforeCompute: $.empty,\n    onAfterCompute:  $.empty,\n    onCreateLabel:   $.empty,\n    onPlaceLabel:    $.empty,\n    onComplete:      $.empty,\n    onBeforePlotLine:$.empty,\n    onAfterPlotLine: $.empty,\n    onBeforePlotNode:$.empty,\n    onAfterPlotNode: $.empty,\n    request:         false\n  };\n  \n  (end code)\n  \n  Example:\n    \n  (start code js)\n  var viz = new $jit.Viz({\n    onBeforePlotNode: function(node) {\n      if(node.selected) {\n        node.setData('color', '#ffc');\n      } else {\n        node.removeData('color');\n      }\n    },\n    onBeforePlotLine: function(adj) {\n      if(adj.nodeFrom.selected && adj.nodeTo.selected) {\n        adj.setData('color', '#ffc');\n      } else {\n        adj.removeData('color');\n      }\n    },\n    onAfterCompute: function() {\n      alert(\"computed!\");\n    }\n  });\n  (end code)\n  \n  Parameters:\n\n   onBeforeCompute(node) - This method is called right before performing all computations and animations. The selected <Graph.Node> is passed as parameter.\n   onAfterCompute() - This method is triggered after all animations or computations ended.\n   onCreateLabel(domElement, node) - This method receives a new label DIV element as first parameter, and the corresponding <Graph.Node> as second parameter. This method will only be called once for each label. This method is useful when adding events or styles to the labels used by the JIT.\n   onPlaceLabel(domElement, node) - This method receives a label DIV element as first parameter and the corresponding <Graph.Node> as second parameter. This method is called each time a label has been placed in the visualization, for example at each step of an animation, and thus it allows you to update the labels properties, such as size or position. Note that onPlaceLabel will be triggered after updating the labels positions. That means that, for example, the left and top css properties are already updated to match the nodes positions. Width and height properties are not set however.\n   onBeforePlotNode(node) - This method is triggered right before plotting each <Graph.Node>. This method is useful for changing a node style right before plotting it.\n   onAfterPlotNode(node) - This method is triggered right after plotting each <Graph.Node>.\n   onBeforePlotLine(adj) - This method is triggered right before plotting a <Graph.Adjacence>. This method is useful for adding some styles to a particular edge before being plotted.\n   onAfterPlotLine(adj) - This method is triggered right after plotting a <Graph.Adjacence>.\n\n    *Used in <ST>, <TM.Base> and <Icicle> visualizations*\n    \n    request(nodeId, level, onComplete) - This method is used for buffering information into the visualization. When clicking on an empty node, the visualization will make a request for this node's subtrees, specifying a given level for this subtree (defined by _levelsToShow_). Once the request is completed, the onComplete callback should be called with the given result. This is useful to provide on-demand information into the visualizations withought having to load the entire information from start. The parameters used by this method are _nodeId_, which is the id of the root of the subtree to request, _level_ which is the depth of the subtree to be requested (0 would mean just the root node). _onComplete_ is an object having the callback method _onComplete.onComplete(json)_ that should be called once the json has been retrieved.  \n \n */\nOptions.Controller = {\n  $extend: true,\n  \n  onBeforeCompute: $.empty,\n  onAfterCompute:  $.empty,\n  onCreateLabel:   $.empty,\n  onPlaceLabel:    $.empty,\n  onComplete:      $.empty,\n  onBeforePlotLine:$.empty,\n  onAfterPlotLine: $.empty,\n  onBeforePlotNode:$.empty,\n  onAfterPlotNode: $.empty,\n  request:         false\n};\n\n\n/*\n * File: Extras.js\n * \n * Provides Extras such as Tips and Style Effects.\n * \n * Description:\n * \n * Provides the <Tips> and <NodeStyles> classes and functions.\n *\n */\n\n/*\n * Manager for mouse events (clicking and mouse moving).\n * \n * This class is used for registering objects implementing onClick\n * and onMousemove methods. These methods are called when clicking or\n * moving the mouse around  the Canvas.\n * For now, <Tips> and <NodeStyles> are classes implementing these methods.\n * \n */\nvar ExtrasInitializer = {\n  initialize: function(className, viz) {\n    this.viz = viz;\n    this.canvas = viz.canvas;\n    this.config = viz.config[className];\n    this.nodeTypes = viz.fx.nodeTypes;\n    var type = this.config.type;\n    this.dom = type == 'auto'? (viz.config.Label.type != 'Native') : (type != 'Native');\n    this.labelContainer = this.dom && viz.labels.getLabelContainer();\n    this.isEnabled() && this.initializePost();\n  },\n  initializePost: $.empty,\n  setAsProperty: $.lambda(false),\n  isEnabled: function() {\n    return this.config.enable;\n  },\n  isLabel: function(e, win, group) {\n    e = $.event.get(e, win);\n    var labelContainer = this.labelContainer,\n        target = e.target || e.srcElement,\n        related = e.relatedTarget;\n    if(group) {\n      return related && related == this.viz.canvas.getCtx().canvas \n          && !!target && this.isDescendantOf(target, labelContainer);\n    } else {\n      return this.isDescendantOf(target, labelContainer);\n    }\n  },\n  isDescendantOf: function(elem, par) {\n    while(elem && elem.parentNode) {\n      if(elem.parentNode == par)\n        return elem;\n      elem = elem.parentNode;\n    }\n    return false;\n  }\n};\n\nvar EventsInterface = {\n  onMouseUp: $.empty,\n  onMouseDown: $.empty,\n  onMouseMove: $.empty,\n  onMouseOver: $.empty,\n  onMouseOut: $.empty,\n  onMouseWheel: $.empty,\n  onTouchStart: $.empty,\n  onTouchMove: $.empty,\n  onTouchEnd: $.empty,\n  onTouchCancel: $.empty\n};\n\nvar MouseEventsManager = new Class({\n  initialize: function(viz) {\n    this.viz = viz;\n    this.canvas = viz.canvas;\n    this.node = false;\n    this.edge = false;\n    this.registeredObjects = [];\n    this.attachEvents();\n  },\n  \n  attachEvents: function() {\n    var htmlCanvas = this.canvas.getElement(), \n        that = this;\n    htmlCanvas.oncontextmenu = $.lambda(false);\n    $.addEvents(htmlCanvas, {\n      'mouseup': function(e, win) {\n        var event = $.event.get(e, win);\n        that.handleEvent('MouseUp', e, win, \n            that.makeEventObject(e, win), \n            $.event.isRightClick(event));\n      },\n      'mousedown': function(e, win) {\n        var event = $.event.get(e, win);\n        that.handleEvent('MouseDown', e, win, that.makeEventObject(e, win), \n            $.event.isRightClick(event));\n      },\n      'mousemove': function(e, win) {\n        that.handleEvent('MouseMove', e, win, that.makeEventObject(e, win));\n      },\n      'mouseover': function(e, win) {\n        that.handleEvent('MouseOver', e, win, that.makeEventObject(e, win));\n      },\n      'mouseout': function(e, win) {\n        that.handleEvent('MouseOut', e, win, that.makeEventObject(e, win));\n      },\n      'touchstart': function(e, win) {\n        that.handleEvent('TouchStart', e, win, that.makeEventObject(e, win));\n      },\n      'touchmove': function(e, win) {\n        that.handleEvent('TouchMove', e, win, that.makeEventObject(e, win));\n      },\n      'touchend': function(e, win) {\n        that.handleEvent('TouchEnd', e, win, that.makeEventObject(e, win));\n      }\n    });\n    //attach mousewheel event\n    var handleMouseWheel = function(e, win) {\n      var event = $.event.get(e, win);\n      var wheel = $.event.getWheel(event);\n      that.handleEvent('MouseWheel', e, win, wheel);\n    };\n    //TODO(nico): this is a horrible check for non-gecko browsers!\n    if(!document.getBoxObjectFor && window.mozInnerScreenX == null) {\n      $.addEvent(htmlCanvas, 'mousewheel', handleMouseWheel);\n    } else {\n      htmlCanvas.addEventListener('DOMMouseScroll', handleMouseWheel, false);\n    }\n  },\n  \n  register: function(obj) {\n    this.registeredObjects.push(obj);\n  },\n  \n  handleEvent: function() {\n    var args = Array.prototype.slice.call(arguments),\n        type = args.shift();\n    for(var i=0, regs=this.registeredObjects, l=regs.length; i<l; i++) {\n      regs[i]['on' + type].apply(regs[i], args);\n    }\n  },\n  \n  makeEventObject: function(e, win) {\n    var that = this,\n        graph = this.viz.graph,\n        fx = this.viz.fx,\n        ntypes = fx.nodeTypes,\n        etypes = fx.edgeTypes;\n    return {\n      pos: false,\n      node: false,\n      edge: false,\n      contains: false,\n      getNodeCalled: false,\n      getEdgeCalled: false,\n      getPos: function() {\n        //TODO(nico): check why this can't be cache anymore when using edge detection\n        //if(this.pos) return this.pos;\n        var canvas = that.viz.canvas,\n            s = canvas.getSize(),\n            p = canvas.getPos(),\n            ox = canvas.translateOffsetX,\n            oy = canvas.translateOffsetY,\n            sx = canvas.scaleOffsetX,\n            sy = canvas.scaleOffsetY,\n            pos = $.event.getPos(e, win);\n        this.pos = {\n          x: (pos.x - p.x - s.width/2 - ox) * 1/sx,\n          y: (pos.y - p.y - s.height/2 - oy) * 1/sy\n        };\n        return this.pos;\n      },\n      getNode: function() {\n        if(this.getNodeCalled) return this.node;\n        this.getNodeCalled = true;\n        for(var id in graph.nodes) {\n          var n = graph.nodes[id],\n              geom = n && ntypes[n.getData('type')],\n              \n              // START METAMAPS CODE\n              contains = n.getData('alpha') !== 0 && geom && geom.contains && geom.contains.call(fx, n, this.getPos());\n              // END METAMAPS CODE\n              // ORIGINAL CODE contains = geom && geom.contains && geom.contains.call(fx, n, this.getPos());\n\n          if(contains) {\n            this.contains = contains;\n            return that.node = this.node = n;\n          }\n        }\n        return that.node = this.node = false;\n      },\n      getEdge: function() {\n        if(this.getEdgeCalled) return this.edge;\n        this.getEdgeCalled = true;\n        var hashset = {};\n        for(var id in graph.edges) {\n          var edgeFrom = graph.edges[id];\n          hashset[id] = true;\n          for(var edgeId in edgeFrom) {\n            if(edgeId in hashset) continue;\n            var e = edgeFrom[edgeId],\n                geom = e && etypes[e.getData('type')],\n\n                // START METAMAPS CODE\n                contains = e.getData('alpha') !== 0 && geom && geom.contains && geom.contains.call(fx, e, this.getPos());\n                // END METAMAPS CODE\n                // ORIGINAL CODE contains = geom && geom.contains && geom.contains.call(fx, n, this.getPos());\n            if(contains) {\n              this.contains = contains;\n              return that.edge = this.edge = e;\n            }\n          }\n        }\n        return that.edge = this.edge = false;\n      },\n      getContains: function() {\n        if(this.getNodeCalled) return this.contains;\n        this.getNode();\n        return this.contains;\n      }\n    };\n  }\n});\n\n/* \n * Provides the initialization function for <NodeStyles> and <Tips> implemented \n * by all main visualizations.\n *\n */\nvar Extras = {\n  initializeExtras: function() {\n    var mem = new MouseEventsManager(this), that = this;\n    $.each(['NodeStyles', 'Tips', 'Navigation', 'Events'], function(k) {\n      var obj = new Extras.Classes[k](k, that);\n      if(obj.isEnabled()) {\n        mem.register(obj);\n      }\n      if(obj.setAsProperty()) {\n        that[k.toLowerCase()] = obj;\n      }\n    });\n  }   \n};\n\nExtras.Classes = {};\n/*\n  Class: Events\n   \n  This class defines an Event API to be accessed by the user.\n  The methods implemented are the ones defined in the <Options.Events> object.\n*/\n\nExtras.Classes.Events = new Class({\n  Implements: [ExtrasInitializer, EventsInterface],\n  \n  initializePost: function() {\n    this.fx = this.viz.fx;\n    this.ntypes = this.viz.fx.nodeTypes;\n    this.etypes = this.viz.fx.edgeTypes;\n    \n    this.hovered = false;\n    this.pressed = false;\n    this.touched = false;\n\n    this.touchMoved = false;\n    this.moved = false;\n    \n  },\n  \n  setAsProperty: $.lambda(true),\n  \n  onMouseUp: function(e, win, event, isRightClick) {\n    var evt = $.event.get(e, win);\n    if(!this.moved) {\n      if(isRightClick) {\n        this.config.onRightClick(this.hovered, event, evt);\n      } else {\n        this.config.onClick(this.pressed, event, evt);\n      }\n    }\n    if(this.pressed) {\n      if(this.moved) {\n        this.config.onDragEnd(this.pressed, event, evt);\n      } else {\n        this.config.onDragCancel(this.pressed, event, evt);\n      }\n      this.pressed = this.moved = false;\n    }\n  },\n\n  onMouseOut: function(e, win, event) {\n   //mouseout a label\n   var evt = $.event.get(e, win), label;\n   if(this.dom && (label = this.isLabel(e, win, true))) {\n     this.config.onMouseLeave(this.viz.graph.getNode(label.id),\n                              event, evt);\n     this.hovered = false;\n     return;\n   }\n   //mouseout canvas\n   var rt = evt.relatedTarget,\n       canvasWidget = this.canvas.getElement();\n   while(rt && rt.parentNode) {\n     if(canvasWidget == rt.parentNode) return;\n     rt = rt.parentNode;\n   }\n   if(this.hovered) {\n     this.config.onMouseLeave(this.hovered,\n         event, evt);\n     this.hovered = false;\n   }\n  },\n  \n  onMouseOver: function(e, win, event) {\n    //mouseover a label\n    var evt = $.event.get(e, win), label;\n    if(this.dom && (label = this.isLabel(e, win, true))) {\n      this.hovered = this.viz.graph.getNode(label.id);\n      this.config.onMouseEnter(this.hovered,\n                               event, evt);\n    }\n  },\n  \n  onMouseMove: function(e, win, event) {\n   var label, evt = $.event.get(e, win);\n   if(this.pressed) {\n     this.moved = true;\n     this.config.onDragMove(this.pressed, event, evt);\n     return;\n   }\n   if(this.dom) {\n     this.config.onMouseMove(this.hovered,\n         event, evt);\n   } else {\n     if(this.hovered) {\n       var hn = this.hovered;\n       var geom = hn.nodeFrom? this.etypes[hn.getData('type')] : this.ntypes[hn.getData('type')];\n       var contains = geom && geom.contains \n         && geom.contains.call(this.fx, hn, event.getPos());\n       if(contains) {\n         this.config.onMouseMove(hn, event, evt);\n         return;\n       } else {\n         this.config.onMouseLeave(hn, event, evt);\n         this.hovered = false;\n       }\n     }\n     if(this.hovered = (event.getNode() || (this.config.enableForEdges && event.getEdge()))) {\n       this.config.onMouseEnter(this.hovered, event, evt);\n     } else {\n       this.config.onMouseMove(false, event, evt);\n     }\n   }\n  },\n  \n  onMouseWheel: function(e, win, delta) {\n    this.config.onMouseWheel(delta, $.event.get(e, win));\n  },\n  \n  onMouseDown: function(e, win, event) {\n    \n    // START METAMAPS CODE\n    var evt = $.event.get(e, win);\n    this.pressed = event.getNode() || (this.config.enableForEdges && event.getEdge());\n    // END METAMAPS CODE    \n    // ORIGINAL CODE\n    /*var evt = $.event.get(e, win), label;\n    if(this.dom) {\n      if(label = this.isLabel(e, win)) {\n        this.pressed = this.viz.graph.getNode(label.id);\n      }\n    } else {\n      this.pressed = event.getNode() || (this.config.enableForEdges && event.getEdge());\n    } */\n    this.pressed && this.config.onDragStart(this.pressed, event, evt);\n  },\n  \n  onTouchStart: function(e, win, event) {\n    var evt = $.event.get(e, win), label;\n    if(this.dom && (label = this.isLabel(e, win))) {\n      this.touched = this.viz.graph.getNode(label.id);\n    } else {\n      this.touched = event.getNode() || (this.config.enableForEdges && event.getEdge());\n    }\n    this.touched && this.config.onTouchStart(this.touched, event, evt);\n  },\n  \n  onTouchMove: function(e, win, event) {\n    var evt = $.event.get(e, win);\n    if(this.touched) {\n      this.touchMoved = true;\n      this.config.onTouchMove(this.touched, event, evt);\n    }\n  },\n  \n  onTouchEnd: function(e, win, event) {\n    var evt = $.event.get(e, win);\n    if(this.touched) {\n      if(this.touchMoved) {\n        this.config.onTouchEnd(this.touched, event, evt);\n      } else {\n        this.config.onTouchCancel(this.touched, event, evt);\n      }\n      this.touched = this.touchMoved = false;\n    }\n  }\n});\n\n/*\n   Class: Tips\n    \n   A class containing tip related functions. This class is used internally.\n   \n   Used by:\n   \n   <ST>, <Sunburst>, <Hypertree>, <RGraph>, <TM>, <ForceDirected>, <Icicle>\n   \n   See also:\n   \n   <Options.Tips>\n*/\n\nExtras.Classes.Tips = new Class({\n  Implements: [ExtrasInitializer, EventsInterface],\n  \n  initializePost: function() {\n    //add DOM tooltip\n    if(document.body) {\n      var tip = $('_tooltip') || document.createElement('div');\n      tip.id = '_tooltip';\n      tip.className = 'tip';\n      $.extend(tip.style, {\n        position: 'absolute',\n        display: 'none',\n        zIndex: 13000\n      });\n      document.body.appendChild(tip);\n      this.tip = tip;\n      this.node = false;\n    }\n  },\n  \n  setAsProperty: $.lambda(true),\n  \n  onMouseOut: function(e, win) {\n    //mouseout a label\n    var evt = $.event.get(e, win);\n    if(this.dom && this.isLabel(e, win, true)) {\n      this.hide(true);\n      return;\n    }\n    //mouseout canvas\n    var rt = e.relatedTarget,\n        canvasWidget = this.canvas.getElement();\n    while(rt && rt.parentNode) {\n      if(canvasWidget == rt.parentNode) return;\n      rt = rt.parentNode;\n    }\n    this.hide(false);\n  },\n  \n  onMouseOver: function(e, win) {\n    //mouseover a label\n    var label;\n    if(this.dom && (label = this.isLabel(e, win, false))) {\n      this.node = this.viz.graph.getNode(label.id);\n      this.config.onShow(this.tip, this.node, label);\n    }\n  },\n  \n  onMouseMove: function(e, win, opt) {\n    if(this.dom && this.isLabel(e, win)) {\n      this.setTooltipPosition($.event.getPos(e, win));\n    }\n    if(!this.dom) {\n      var node = opt.getNode();\n      if(!node) {\n        this.hide(true);\n        return;\n      }\n      if(this.config.force || !this.node || this.node.id != node.id) {\n        this.node = node;\n        this.config.onShow(this.tip, node, opt.getContains());\n      }\n      this.setTooltipPosition($.event.getPos(e, win));\n    }\n  },\n  \n  setTooltipPosition: function(pos) {\n    var tip = this.tip, \n        style = tip.style, \n        cont = this.config;\n    style.display = '';\n    //get window dimensions\n    var win = {\n      'height': document.body.clientHeight,\n      'width': document.body.clientWidth\n    };\n    //get tooltip dimensions\n    var obj = {\n      'width': tip.offsetWidth,\n      'height': tip.offsetHeight  \n    };\n    //set tooltip position\n    var x = cont.offsetX, y = cont.offsetY;\n    style.top = ((pos.y + y + obj.height > win.height)?  \n        (pos.y - obj.height - y) : pos.y + y) + 'px';\n    style.left = ((pos.x + obj.width + x > win.width)? \n        (pos.x - obj.width - x) : pos.x + x) + 'px';\n  },\n  \n  hide: function(triggerCallback) {\n    this.tip.style.display = 'none';\n    triggerCallback && this.config.onHide();\n  }\n});\n\n/*\n  Class: NodeStyles\n   \n  Change node styles when clicking or hovering a node. This class is used internally.\n  \n  Used by:\n  \n  <ST>, <Sunburst>, <Hypertree>, <RGraph>, <TM>, <ForceDirected>, <Icicle>\n  \n  See also:\n  \n  <Options.NodeStyles>\n*/\nExtras.Classes.NodeStyles = new Class({\n  Implements: [ExtrasInitializer, EventsInterface],\n  \n  initializePost: function() {\n    this.fx = this.viz.fx;\n    this.types = this.viz.fx.nodeTypes;\n    this.nStyles = this.config;\n    this.nodeStylesOnHover = this.nStyles.stylesHover;\n    this.nodeStylesOnClick = this.nStyles.stylesClick;\n    this.hoveredNode = false;\n    this.fx.nodeFxAnimation = new Animation();\n    \n    this.down = false;\n    this.move = false;\n  },\n  \n  onMouseOut: function(e, win) {\n    this.down = this.move = false;\n    if(!this.hoveredNode) return;\n    //mouseout a label\n    if(this.dom && this.isLabel(e, win, true)) {\n      this.toggleStylesOnHover(this.hoveredNode, false);\n    }\n    //mouseout canvas\n    var rt = e.relatedTarget,\n        canvasWidget = this.canvas.getElement();\n    while(rt && rt.parentNode) {\n      if(canvasWidget == rt.parentNode) return;\n      rt = rt.parentNode;\n    }\n    this.toggleStylesOnHover(this.hoveredNode, false);\n    this.hoveredNode = false;\n  },\n  \n  onMouseOver: function(e, win) {\n    //mouseover a label\n    var label;\n    if(this.dom && (label = this.isLabel(e, win, true))) {\n      var node = this.viz.graph.getNode(label.id);\n      if(node.selected) return;\n      this.hoveredNode = node;\n      this.toggleStylesOnHover(this.hoveredNode, true);\n    }\n  },\n  \n  onMouseDown: function(e, win, event, isRightClick) {\n    if(isRightClick) return;\n    var label;\n    if(this.dom && (label = this.isLabel(e, win))) {\n      this.down = this.viz.graph.getNode(label.id);\n    } else if(!this.dom) {\n      this.down = event.getNode();\n    }\n    this.move = false;\n  },\n  \n  onMouseUp: function(e, win, event, isRightClick) {\n    if(isRightClick) return;\n    if(!this.move) {\n      this.onClick(event.getNode());\n    }\n    this.down = this.move = false;\n  },\n  \n  getRestoredStyles: function(node, type) {\n    var restoredStyles = {}, \n        nStyles = this['nodeStylesOn' + type];\n    for(var prop in nStyles) {\n      restoredStyles[prop] = node.styles['$' + prop];\n    }\n    return restoredStyles;\n  },\n  \n  toggleStylesOnHover: function(node, set) {\n    if(this.nodeStylesOnHover) {\n      this.toggleStylesOn('Hover', node, set);\n    }\n  },\n\n  toggleStylesOnClick: function(node, set) {\n    if(this.nodeStylesOnClick) {\n      this.toggleStylesOn('Click', node, set);\n    }\n  },\n  \n  toggleStylesOn: function(type, node, set) {\n    var viz = this.viz;\n    var nStyles = this.nStyles;\n    if(set) {\n      var that = this;\n      if(!node.styles) {\n        node.styles = $.merge(node.data, {});\n      }\n      for(var s in this['nodeStylesOn' + type]) {\n        var $s = '$' + s;\n        if(!($s in node.styles)) {\n            node.styles[$s] = node.getData(s); \n        }\n      }\n      viz.fx.nodeFx($.extend({\n        'elements': {\n          'id': node.id,\n          'properties': that['nodeStylesOn' + type]\n         },\n         transition: Trans.Quart.easeOut,\n         duration:300,\n         fps:40\n      }, this.config));\n    } else {\n      var restoredStyles = this.getRestoredStyles(node, type);\n      viz.fx.nodeFx($.extend({\n        'elements': {\n          'id': node.id,\n          'properties': restoredStyles\n         },\n         transition: Trans.Quart.easeOut,\n         duration:300,\n         fps:40\n      }, this.config));\n    }\n  },\n\n  onClick: function(node) {\n    if(!node) return;\n    var nStyles = this.nodeStylesOnClick;\n    if(!nStyles) return;\n    //if the node is selected then unselect it\n    if(node.selected) {\n      this.toggleStylesOnClick(node, false);\n      delete node.selected;\n    } else {\n      //unselect all selected nodes...\n      this.viz.graph.eachNode(function(n) {\n        if(n.selected) {\n          for(var s in nStyles) {\n            n.setData(s, n.styles['$' + s], 'end');\n          }\n          delete n.selected;\n        }\n      });\n      //select clicked node\n      this.toggleStylesOnClick(node, true);\n      node.selected = true;\n      delete node.hovered;\n      this.hoveredNode = false;\n    }\n  },\n  \n  onMouseMove: function(e, win, event) {\n    //if mouse button is down and moving set move=true\n    if(this.down) this.move = true;\n    //already handled by mouseover/out\n    if(this.dom && this.isLabel(e, win)) return;\n    var nStyles = this.nodeStylesOnHover;\n    if(!nStyles) return;\n    \n    if(!this.dom) {\n      if(this.hoveredNode) {\n        var geom = this.types[this.hoveredNode.getData('type')];\n        var contains = geom && geom.contains && geom.contains.call(this.fx, \n            this.hoveredNode, event.getPos());\n        if(contains) return;\n      }\n      var node = event.getNode();\n      //if no node is being hovered then just exit\n      if(!this.hoveredNode && !node) return;\n      //if the node is hovered then exit\n      if(node.hovered) return;\n      //select hovered node\n      if(node && !node.selected) {\n        //check if an animation is running and exit it\n        this.fx.nodeFxAnimation.stopTimer();\n        //unselect all hovered nodes...\n        this.viz.graph.eachNode(function(n) {\n          if(n.hovered && !n.selected) {\n            for(var s in nStyles) {\n              n.setData(s, n.styles['$' + s], 'end');\n            }\n            delete n.hovered;\n          }\n        });\n        //select hovered node\n        node.hovered = true;\n        this.hoveredNode = node;\n        this.toggleStylesOnHover(node, true);\n      } else if(this.hoveredNode && !this.hoveredNode.selected) {\n        //check if an animation is running and exit it\n        this.fx.nodeFxAnimation.stopTimer();\n        //unselect hovered node\n        this.toggleStylesOnHover(this.hoveredNode, false);\n        delete this.hoveredNode.hovered;\n        this.hoveredNode = false;\n      }\n    }\n  }\n});\n\nExtras.Classes.Navigation = new Class({\n  Implements: [ExtrasInitializer, EventsInterface],\n  \n  initializePost: function() {\n    this.pos = false;\n    this.pressed = false;\n    // START METAMAPS CODE\n    this.initDist = false;\n    // END METAMAPS CODE\n  },\n  \n  onMouseWheel: function(e, win, scroll) {      \n    if(!this.config.zooming) return;\n    \n    // START METAMAPS CODE\n    e.preventDefault();\n\t  if (e.target.id != 'infovis-canvas') return;\n    if (Metamaps.Create.newTopic.beingCreated && !Metamaps.Create.newTopic.pinned) return;\n\t  // END METAMAPS CODE\n  \n    //$.event.stop($.event.get(e, win));\n    // END METAMAPS CODE\n    // ORIGINAL CODE $.event.stop($.event.get(e, win));\n\n    var val = this.config.zooming / 1000,\n        ans = 1 + scroll * val;\n        \n    // START METAMAPS CODE\n\t  if (((ans > 1) && (5 >= this.canvas.scaleOffsetX)) || ((ans < 1) && (this.canvas.scaleOffsetX >= 0.2))) {\n\t    var s = this.canvas.getSize(),\n          p = this.canvas.getPos(),\n          ox = this.canvas.translateOffsetX,\n          oy = this.canvas.translateOffsetY,\n          sx = this.canvas.scaleOffsetX,\n          sy = this.canvas.scaleOffsetY;\n\t    \n\t    //Basically this is just a duplication of the Util function pixelsToCoords, it finds the canvas coordinate of the mouse pointer\n      var pointerCoordX = (e.pageX - p.x - s.width / 2 - ox) * (1 / sx),\n          pointerCoordY = (e.pageY - p.y - s.height / 2 - oy) * (1 / sy);\n\n      //This translates the canvas to be centred over the mouse pointer, then the canvas is zoomed as intended.\n      this.canvas.translate(-pointerCoordX,-pointerCoordY);\n      this.canvas.scale(ans, ans);\n      \n      //Get the canvas attributes again now that is has changed\n      s = this.canvas.getSize(),\n      p = this.canvas.getPos(),\n      ox = this.canvas.translateOffsetX,\n      oy = this.canvas.translateOffsetY,\n      sx = this.canvas.scaleOffsetX,\n      sy = this.canvas.scaleOffsetY;\n      var newX = (e.pageX - p.x - s.width / 2 - ox) * (1 / sx),\n          newY = (e.pageY - p.y - s.height / 2 - oy) * (1 / sy);\n          \n      //Translate the canvas to put the pointer back over top the same coordinate it was over before\n      this.canvas.translate(newX-pointerCoordX,newY-pointerCoordY);\n\t  }\n\t  \n    // END METAMAPS CODE\n    // ORIGINAL CODE this.canvas.scale(ans, ans);\n\n    // START METAMAPS CODE\n      jQuery(document).trigger(Metamaps.JIT.events.zoom, [e]);\n    // END METAMAPS CODE\n  },\n  \n  onMouseDown: function(e, win, eventInfo) {\n    ///console.log('mouse down!!!!');\n    if(!this.config.panning) return;\n    \n    //START METAMAPS CODE\n    Metamaps.Mouse.changeInX = 0;\n    Metamaps.Mouse.changeInY = 0;\n    if((this.config.panning == 'avoid nodes' && eventInfo.getNode()) || eventInfo.getEdge()) return;\n    // END METAMAPS CODE\n    // ORIGINAl CODE if(this.config.panning == 'avoid nodes' && (this.dom? this.isLabel(e, win) : eventInfo.getNode())) return;\n    \n    this.pressed = true;\n    \n    //START METAMAPS CODE\n    var rightClick = e.button == 2 || (navigator.platform.indexOf(\"Mac\") != -1 && e.ctrlKey); \n    // TODO make sure this works across browsers  \n    if (!Metamaps.Mouse.boxStartCoordinates && ((e.button == 0 && e.shiftKey) || (e.button == 0 && e.ctrlKey)  || rightClick)) {\n      Metamaps.Mouse.boxStartCoordinates = eventInfo.getPos();\n      //console.log('mouse down');\n    }\n\n    Metamaps.Mouse.didPan = false;\n    \n\n    \n    // END METAMAPS CODE\n    \n    this.pos = eventInfo.getPos();\n    var canvas = this.canvas,\n        ox = canvas.translateOffsetX,\n        oy = canvas.translateOffsetY,\n        sx = canvas.scaleOffsetX,\n        sy = canvas.scaleOffsetY;\n    this.pos.x *= sx;\n    this.pos.x += ox;\n    this.pos.y *= sy;\n    this.pos.y += oy;\n  },\n  \n  onMouseMove: function(e, win, eventInfo) {\n    if(!this.config.panning) return;\n    if(!this.pressed) return;\n    if(this.config.panning == 'avoid nodes' && (this.dom? this.isLabel(e, win) : eventInfo.getNode())) return;\n    \n    // START METAMAPS CODE\n    var rightClick = e.button == 2 || (navigator.platform.indexOf(\"Mac\") != -1 && e.ctrlKey);\n    if (!Metamaps.Mouse.boxStartCoordinates && ((e.button == 0 && e.shiftKey) || (e.button == 0 && e.ctrlKey)  || rightClick)) {\n      Metamaps.Visualize.mGraph.busy = true;\n      Metamaps.boxStartCoordinates = eventInfo.getPos();\n      //console.log('mouse move');\n      return;\n    }\n    if (Metamaps.Mouse.boxStartCoordinates && ((e.button == 0 && e.shiftKey) || (e.button == 0 && e.ctrlKey)  || rightClick)) {\n      Metamaps.Visualize.mGraph.busy = true;\n      Metamaps.Mouse.boxEndCoordinates = {\n        x: eventInfo.getPos().x,\n        y: eventInfo.getPos().y\n      }\n      Metamaps.Visualize.mGraph.plot()\n      //console.log('mouse move');\n      return;\n    }\n    if (rightClick){\n      return;\n    }\n    if (e.target.id != 'infovis-canvas') { \n      this.pressed = false;\n      return;\n    }\n    Metamaps.Mouse.didPan = true;\n    // END METAMAPS CODE\n    \n    var thispos = this.pos, \n        currentPos = eventInfo.getPos(),\n        canvas = this.canvas,\n        ox = canvas.translateOffsetX,\n        oy = canvas.translateOffsetY,\n        sx = canvas.scaleOffsetX,\n        sy = canvas.scaleOffsetY;\n    currentPos.x *= sx;\n    currentPos.y *= sy;\n    currentPos.x += ox;\n    currentPos.y += oy;\n    var x = currentPos.x - thispos.x,\n        y = currentPos.y - thispos.y;\n    \n    // START METAMAPS CODE\n    Metamaps.Mouse.changeInX = x;\n    Metamaps.Mouse.changeInY = y;\n    // END METAMAPS CODE\n    \n    this.pos = currentPos;\n    this.canvas.translate(x * 1/sx, y * 1/sy);\n\n    // START METAMAPS CODE\n      jQuery(document).trigger(Metamaps.JIT.events.pan);\n    // END METAMAPS CODE\n  },\n  \n  onMouseUp: function(e, win, eventInfo, isRightClick) {\n    if(!this.config.panning) return;\n    this.pressed = false;\n    \n    // START METAMAPS CODE\n    if (Metamaps.Mouse.didPan) Metamaps.JIT.SmoothPanning(); \n    // END METAMAPS CODE\n    \n  },\n  \n  // START METAMAPS CODE\n  onTouchStart: function(e, win, eventInfo) {\n    if(!this.config.panning) return;\n    Metamaps.Mouse.changeInX = 0;\n    Metamaps.Mouse.changeInY = 0;\n    if((this.config.panning == 'avoid nodes' && eventInfo.getNode()) || eventInfo.getEdge()) return;\n    this.pressed = true;\n    var rightClick = e.button == 2 || (navigator.platform.indexOf(\"Mac\") != -1 && e.ctrlKey); \n    if (!Metamaps.Mouse.boxStartCoordinates && ((e.button == 0 && e.shiftKey) || (e.button == 0 && e.ctrlKey)  || rightClick)) {\n      Metamaps.Mouse.boxStartCoordinates = eventInfo.getPos();\n    }\n    Metamaps.Mouse.didPan = false;\n    this.pos = eventInfo.getPos();\n    var canvas = this.canvas,\n        ox = canvas.translateOffsetX,\n        oy = canvas.translateOffsetY,\n        sx = canvas.scaleOffsetX,\n        sy = canvas.scaleOffsetY;\n    this.pos.x *= sx;\n    this.pos.x += ox;\n    this.pos.y *= sy;\n    this.pos.y += oy;\n  },\n  \n  onTouchMove: function(e, win, eventInfo) {\n    if(!this.config.panning) return;\n    if(!this.pressed) return;\n    if(this.config.panning == 'avoid nodes' && (this.dom? this.isLabel(e, win) : eventInfo.getNode())) return;\n    \n    if (e.touches.length == 1) {\n      var rightClick = e.button == 2 || (navigator.platform.indexOf(\"Mac\") != -1 && e.ctrlKey);\n      if (!Metamaps.Mouse.boxStartCoordinates && ((e.button == 0 && e.shiftKey) || (e.button == 0 && e.ctrlKey)  || rightClick)) {\n        Metamaps.Visualize.mGraph.busy = true;\n        Metamaps.boxStartCoordinates = eventInfo.getPos();\n        return;\n      }\n      if (Metamaps.Mouse.boxStartCoordinates && ((e.button == 0 && e.shiftKey) || (e.button == 0 && e.ctrlKey)  || rightClick)) {\n        Metamaps.Visualize.mGraph.busy = true;\n        Metamaps.Mouse.boxEndCoordinates = {\n          x: eventInfo.getPos().x,\n          y: eventInfo.getPos().y\n        }\n        return;\n      }\n      if (rightClick){\n        return;\n      }\n      if (e.target.id != 'infovis-canvas') { \n        this.pressed = false;\n        return;\n      }\n      Metamaps.Mouse.didPan = true;\n      var thispos = this.pos, \n          currentPos = eventInfo.getPos(),\n          canvas = this.canvas,\n          ox = canvas.translateOffsetX,\n          oy = canvas.translateOffsetY,\n          sx = canvas.scaleOffsetX,\n          sy = canvas.scaleOffsetY;\n      currentPos.x *= sx;\n      currentPos.y *= sy;\n      currentPos.x += ox;\n      currentPos.y += oy;\n      var x = currentPos.x - thispos.x,\n          y = currentPos.y - thispos.y;\n      Metamaps.Mouse.changeInX = x;\n      Metamaps.Mouse.changeInY = y;\n      this.pos = currentPos;\n      this.canvas.translate(x * 1/sx, y * 1/sy);\n      jQuery(document).trigger(Metamaps.JIT.events.pan);\n    } \n    /*\n    else if (e.touches.length == 2) {\n      var touch1 = e.touches[0]\n      var touch2 = e.touches[1]\n      var canvas = this.canvas\n      \n      callCount++;\n\n      var dist = Metamaps.Util.getDistance({\n        x: touch1.clientX,\n        y: touch1.clientY\n      }, {\n        x: touch2.clientX,\n        y: touch2.clientY\n      })\n\n      if (!this.initDist) {\n        this.initDist = dist\n        this.initScale = canvas.scaleOffsetX\n      }\n      var scale = (dist / this.initDist)\n      \n      document.getElementById(\"header_content\").innerHTML = scale + ' ' + canvas.scaleOffsetX\n      if (30 >= this.initScale * scale && this.initScale * scale >= 0.2) {\n        canvas.scale(this.initScale * scale, this.initScale * scale)\n      }\n      if (canvas.scaleOffsetX < 0.5) {\n        canvas.viz.labels.hideLabels(true)\n      } else if (canvas.scaleOffsetX > 0.5) {\n        canvas.viz.labels.hideLabels(false)\n      }\n      \n      jQuery(document).trigger(Metamaps.JIT.events.zoom);\n    }\n    */\n  },\n  \n  onTouchEnd: function(e, win, eventInfo, isRightClick) {\n    if(!this.config.panning) return;\n    this.pressed = false;\n    if (Metamaps.Mouse.didPan) Metamaps.JIT.SmoothPanning();\n    this.initDist = false\n  }\n  // END METAMAPS CODE\n});\n\n\n/*\n * File: Canvas.js\n *\n */\n\n/*\n Class: Canvas\n \n \tA canvas widget used by all visualizations. The canvas object can be accessed by doing *viz.canvas*. If you want to \n \tknow more about <Canvas> options take a look at <Options.Canvas>.\n \n A canvas widget is a set of DOM elements that wrap the native canvas DOM Element providing a consistent API and behavior \n across all browsers. It can also include Elements to add DOM (SVG or HTML) label support to all visualizations.\n \n Example:\n \n Suppose we have this HTML\n \n (start code xml)\n \t<div id=\"infovis\"></div>\n (end code)\n \n Now we create a new Visualization\n \n (start code js)\n \tvar viz = new $jit.Viz({\n \t\t//Where to inject the canvas. Any div container will do.\n \t\t'injectInto':'infovis',\n\t\t //width and height for canvas. \n\t\t //Default's to the container offsetWidth and Height.\n\t\t 'width': 900,\n\t\t 'height':500\n\t });\n (end code)\n\n The generated HTML will look like this\n \n (start code xml)\n <div id=\"infovis\">\n \t<div id=\"infovis-canvaswidget\" style=\"position:relative;\">\n \t<canvas id=\"infovis-canvas\" width=900 height=500\n \tstyle=\"position:absolute; top:0; left:0; width:900px; height:500px;\" />\n \t<div id=\"infovis-label\"\n \tstyle=\"overflow:visible; position:absolute; top:0; left:0; width:900px; height:0px\">\n \t</div>\n \t</div>\n </div>\n (end code)\n \n As you can see, the generated HTML consists of a canvas DOM Element of id *infovis-canvas* and a div label container\n of id *infovis-label*, wrapped in a main div container of id *infovis-canvaswidget*.\n */\n\nvar Canvas;\n(function() {\n  //check for native canvas support\n  var canvasType = typeof HTMLCanvasElement,\n      supportsCanvas = (canvasType == 'object' || canvasType == 'function');\n  //create element function\n  function $E(tag, props) {\n    var elem = document.createElement(tag);\n    for(var p in props) {\n      if(typeof props[p] == \"object\") {\n        $.extend(elem[p], props[p]);\n      } else {\n        elem[p] = props[p];\n      }\n    }\n    if (tag == \"canvas\" && !supportsCanvas && G_vmlCanvasManager) {\n      elem = G_vmlCanvasManager.initElement(document.body.appendChild(elem));\n    }\n    return elem;\n  }\n  //canvas widget which we will call just Canvas\n  $jit.Canvas = Canvas = new Class({\n    canvases: [],\n    pos: false,\n    element: false,\n    labelContainer: false,\n    translateOffsetX: 0,\n    translateOffsetY: 0,\n    scaleOffsetX: 1,\n    scaleOffsetY: 1,\n    \n    initialize: function(viz, opt) {\n      this.viz = viz;\n      this.opt = this.config = opt;\n      var id = $.type(opt.injectInto) == 'string'? \n          opt.injectInto:opt.injectInto.id,\n          type = opt.type,\n          idLabel = id + \"-label\", \n          wrapper = $(id),\n          width = opt.width, // || wrapper.offsetWidth,\n          height = opt.height; // || wrapper.offsetHeight;\n      this.id = id;\n      //canvas options\n      var canvasOptions = {\n        injectInto: id,\n        width: width,\n        height: height\n      };\n      //create main wrapper\n      this.element = $E('div', {\n        'id': id + '-canvaswidget',\n        'style': {\n          'position': 'relative',\n          'width': width + 'px',\n          'height': height + 'px'\n        }\n      });\n      //create label container\n      this.labelContainer = this.createLabelContainer(opt.Label.type, \n          idLabel, canvasOptions);\n      //create primary canvas\n      this.canvases.push(new Canvas.Base[type]({\n        config: $.extend({idSuffix: '-canvas'}, canvasOptions),\n        plot: function(base) {\n          viz.fx.plot();\n        },\n        resize: function() {\n          viz.refresh();\n        }\n      }));\n      //create secondary canvas\n      var back = opt.background;\n      if(back) {\n        var backCanvas = new Canvas.Background[back.type](viz, $.extend(back, canvasOptions));\n        this.canvases.push(new Canvas.Base[type](backCanvas));\n      }\n      //insert canvases\n      var len = this.canvases.length;\n      while(len--) {\n        this.element.appendChild(this.canvases[len].canvas);\n        if(len > 0) {\n          this.canvases[len].plot();\n        }\n      }\n      this.element.appendChild(this.labelContainer);\n      wrapper.appendChild(this.element);\n\n      //Update canvas position when the page is scrolled.\n      var timer = null, that = this;\n      $.addEvent(window, 'scroll', function() {\n        clearTimeout(timer);\n        timer = setTimeout(function() {\n          that.getPos(true); //update canvas position\n        }, 500);\n      });\n    },\n    /*\n      Method: getCtx\n      \n      Returns the main canvas context object\n      \n      Example:\n      \n      (start code js)\n       var ctx = canvas.getCtx();\n       //Now I can use the native canvas context\n       //and for example change some canvas styles\n       ctx.globalAlpha = 1;\n      (end code)\n    */\n    getCtx: function(i) {\n      return this.canvases[i || 0].getCtx();\n    },\n    /*\n      Method: getConfig\n      \n      Returns the current Configuration for this Canvas Widget.\n      \n      Example:\n      \n      (start code js)\n       var config = canvas.getConfig();\n      (end code)\n    */\n    getConfig: function() {\n      return this.opt;\n    },\n    /*\n      Method: getElement\n\n      Returns the main Canvas DOM wrapper\n      \n      Example:\n      \n      (start code js)\n       var wrapper = canvas.getElement();\n       //Returns <div id=\"infovis-canvaswidget\" ... >...</div> as element\n      (end code)\n    */\n    getElement: function() {\n      return this.element;\n    },\n    /*\n      Method: getSize\n      \n      Returns canvas dimensions.\n      \n      Returns:\n      \n      An object with *width* and *height* properties.\n      \n      Example:\n      (start code js)\n      canvas.getSize(); //returns { width: 900, height: 500 }\n      (end code)\n    */\n    getSize: function(i) {\n      return this.canvases[i || 0].getSize();\n    },\n    /*\n      Method: resize\n      \n      Resizes the canvas.\n      \n      Parameters:\n      \n      width - New canvas width.\n      height - New canvas height.\n      \n      Example:\n      \n      (start code js)\n       canvas.resize(width, height);\n      (end code)\n    \n    */\n    resize: function(width, height) {\n      this.getPos(true);\n      this.translateOffsetX = this.translateOffsetY = 0;\n      this.scaleOffsetX = this.scaleOffsetY = 1;\n\n      for(var i=0, l=this.canvases.length; i<l; i++) {\n        this.canvases[i].resize(width, height);\n      }\n      var style = this.element.style;\n      style.width = width + 'px';\n      style.height = height + 'px';\n      if(this.labelContainer)\n        this.labelContainer.style.width = width + 'px';\n    },\n    /*\n      Method: translate\n      \n      Applies a translation to the canvas.\n      \n      Parameters:\n      \n      x - (number) x offset.\n      y - (number) y offset.\n      disablePlot - (boolean) Default's *false*. Set this to *true* if you don't want to refresh the visualization.\n      \n      Example:\n      \n      (start code js)\n       canvas.translate(30, 30);\n      (end code)\n    \n    */\n    translate: function(x, y, disablePlot) {\n      this.translateOffsetX += x*this.scaleOffsetX;\n      this.translateOffsetY += y*this.scaleOffsetY;\n      for(var i=0, l=this.canvases.length; i<l; i++) {\n        this.canvases[i].translate(x, y, disablePlot);\n      }\n    },\n    /*\n      Method: scale\n      \n      Scales the canvas.\n      \n      Parameters:\n      \n      x - (number) scale value.\n      y - (number) scale value.\n      disablePlot - (boolean) Default's *false*. Set this to *true* if you don't want to refresh the visualization.\n      \n      Example:\n      \n      (start code js)\n       canvas.scale(0.5, 0.5);\n      (end code)\n    \n    */\n    scale: function(x, y, disablePlot) {\n      var px = this.scaleOffsetX * x,\n          py = this.scaleOffsetY * y;\n      var dx = this.translateOffsetX * (x -1) / px,\n          dy = this.translateOffsetY * (y -1) / py;\n      this.scaleOffsetX = px;\n      this.scaleOffsetY = py;\n      for(var i=0, l=this.canvases.length; i<l; i++) {\n        this.canvases[i].scale(x, y, true);\n      }\n      this.translate(dx, dy, false);\n    },\n    /*\n      Method: getPos\n      \n      Returns the canvas position as an *x, y* object.\n      \n      Parameters:\n      \n      force - (boolean) Default's *false*. Set this to *true* if you want to recalculate the position without using any cache information.\n      \n      Returns:\n      \n      An object with *x* and *y* properties.\n      \n      Example:\n      (start code js)\n      canvas.getPos(true); //returns { x: 900, y: 500 }\n      (end code)\n    */\n    getPos: function(force){\n      if(force || !this.pos) {\n        return this.pos = $.getPos(this.getElement());\n      }\n      return this.pos;\n    },\n    /*\n       Method: clear\n       \n       Clears the canvas.\n    */\n    clear: function(i){\n      this.canvases[i||0].clear();\n    },\n    \n    path: function(type, action){\n      var ctx = this.canvases[0].getCtx();\n      ctx.beginPath();\n      action(ctx);\n      ctx[type]();\n      ctx.closePath();\n    },\n    \n    createLabelContainer: function(type, idLabel, dim) {\n      var NS = 'http://www.w3.org/2000/svg';\n      if(type == 'HTML' || type == 'Native') {\n        return $E('div', {\n          'id': idLabel,\n          'style': {\n            'overflow': 'visible',\n            'position': 'absolute',\n            'top': 0,\n            'left': 0,\n            'width': dim.width + 'px',\n            'height': 0\n          }\n        });\n      } else if(type == 'SVG') {\n        var svgContainer = document.createElementNS(NS, 'svg:svg');\n        svgContainer.setAttribute(\"width\", dim.width);\n        svgContainer.setAttribute('height', dim.height);\n        var style = svgContainer.style;\n        style.position = 'absolute';\n        style.left = style.top = '0px';\n        var labelContainer = document.createElementNS(NS, 'svg:g');\n        labelContainer.setAttribute('width', dim.width);\n        labelContainer.setAttribute('height', dim.height);\n        labelContainer.setAttribute('x', 0);\n        labelContainer.setAttribute('y', 0);\n        labelContainer.setAttribute('id', idLabel);\n        svgContainer.appendChild(labelContainer);\n        return svgContainer;\n      }\n    }\n  });\n  //base canvas wrapper\n  Canvas.Base = {};\n  Canvas.Base['2D'] = new Class({\n    translateOffsetX: 0,\n    translateOffsetY: 0,\n    scaleOffsetX: 1,\n    scaleOffsetY: 1,\n\n    initialize: function(viz) {\n      this.viz = viz;\n      this.opt = viz.config;\n      this.size = false;\n      this.createCanvas();\n      this.translateToCenter();\n    },\n    createCanvas: function() {\n      var opt = this.opt,\n          width = opt.width,\n          height = opt.height;\n      this.canvas = $E('canvas', {\n        'id': opt.injectInto + opt.idSuffix,\n        'width': width,\n        'height': height,\n        'style': {\n          'position': 'absolute',\n          'top': 0,\n          'left': 0,\n          'width': width + 'px',\n          'height': height + 'px'\n        }\n      });\n    },\n    getCtx: function() {\n      if(!this.ctx) \n        return this.ctx = this.canvas.getContext('2d');\n      return this.ctx;\n    },\n    getSize: function() {\n      if(this.size) return this.size;\n      var canvas = this.canvas;\n      return this.size = {\n        width: canvas.width,\n        height: canvas.height\n      };\n    },\n    translateToCenter: function(ps) {\n      // START METAMAPS CODE\n      var size = this.getSize();\n      var width = ps ? (size.width - ps.width - this.translateOffsetX*2) : size.width;\n      var height = ps ? (size.height - ps.height - this.translateOffsetY*2) : size.height;\n      // ORIGINAL CODE\n      // var size = this.getSize(),\n      //     width = ps? (size.width - ps.width - this.translateOffsetX*2) : size.width;\n      //     height = ps? (size.height - ps.height - this.translateOffsetY*2) : size.height;\n      // END METAMAPS CODE\n      var ctx = this.getCtx();\n      ps && ctx.scale(1/this.scaleOffsetX, 1/this.scaleOffsetY);\n      ctx.translate(width/2, height/2);\n    },\n    resize: function(width, height) {\n      var size = this.getSize(),\n          canvas = this.canvas,\n          styles = canvas.style;\n      this.size = false;\n      canvas.width = width;\n      canvas.height = height;\n      styles.width = width + \"px\";\n      styles.height = height + \"px\";\n\n      //small ExCanvas fix\n      if(!supportsCanvas) {\n        this.translateToCenter(size);\n      } else {\n        this.translateToCenter();\n      }\n      this.translateOffsetX =\n        this.translateOffsetY = 0;\n      this.scaleOffsetX = \n        this.scaleOffsetY = 1;\n\n      this.clear();\n      this.viz.resize(width, height, this);\n    },\n    translate: function(x, y, disablePlot) {\n      var sx = this.scaleOffsetX,\n          sy = this.scaleOffsetY;\n      this.translateOffsetX += x*sx;\n      this.translateOffsetY += y*sy;\n      this.getCtx().translate(x, y);\n      !disablePlot && this.plot();\n    },\n    scale: function(x, y, disablePlot) {\n      this.scaleOffsetX *= x;\n      this.scaleOffsetY *= y;\n      this.getCtx().scale(x, y);\n      !disablePlot && this.plot();\n    },\n    clear: function(){\n      var size = this.getSize(),\n          ox = this.translateOffsetX,\n          oy = this.translateOffsetY,\n          sx = this.scaleOffsetX,\n          sy = this.scaleOffsetY;\n      this.getCtx().clearRect((-size.width / 2 - ox) * 1/sx, \n                              (-size.height / 2 - oy) * 1/sy, \n                              size.width * 1/sx, size.height * 1/sy);\n    },\n    plot: function() {\n      this.clear();\n      this.viz.plot(this);\n    }\n  });\n  //background canvases\n  //TODO(nico): document this!\n  Canvas.Background = {};\n  Canvas.Background.Circles = new Class({\n    initialize: function(viz, options) {\n      this.viz = viz;\n      this.config = $.merge({\n        idSuffix: '-bkcanvas',\n        levelDistance: 100,\n        numberOfCircles: 6,\n        CanvasStyles: {},\n        offset: 0\n      }, options);\n    },\n    resize: function(width, height, base) {\n      this.plot(base);\n    },\n    plot: function(base) {\n      var canvas = base.canvas,\n          ctx = base.getCtx(),\n          conf = this.config,\n          styles = conf.CanvasStyles;\n      //set canvas styles\n      for(var s in styles) ctx[s] = styles[s];\n      var n = conf.numberOfCircles,\n          rho = conf.levelDistance;\n      for(var i=1; i<=n; i++) {\n        ctx.beginPath();\n        ctx.arc(0, 0, rho * i, 0, 2 * Math.PI, false);\n        ctx.stroke();\n        ctx.closePath();\n      }\n      //TODO(nico): print labels too!\n    }\n  });\n  \n  // START METAMAPS CODE\n  Canvas.Background.Metamaps = new Class({\n    initialize: function(viz, options) {\n      this.viz = viz;\n      this.config = options;\n    },\n    resize: function(width, height, base) {\n      this.plot(base);\n    },\n    plot: function(base) {\n      var canvas = base.canvas,\n          ctx = base.getCtx(),\n          scale = base.scaleOffsetX;\n      //var pattern = new Image();\n      //pattern.src = Metamaps.ServerData['cubes.png']\n      //var ptrn = ctx.createPattern(pattern, 'repeat');\n      //ctx.fillStyle = ptrn;\n      ctx.fillStyle = Metamaps.Settings.colors.background;\n      var xPoint = (-(canvas.width/scale)/2) - (base.translateOffsetX/scale),\n        yPoint = (-(canvas.height/scale)/2) - (base.translateOffsetY/scale);\n      //ctx.fillRect(xPoint,yPoint,canvas.width/scale,canvas.height/scale);\n    }\n  });\n  // END METAMAPS CODE\n})();\n\n\n/*\n * File: Polar.js\n * \n * Defines the <Polar> class.\n *\n * Description:\n *\n * The <Polar> class, just like the <Complex> class, is used by the <Hypertree>, <ST> and <RGraph> as a 2D point representation.\n *\n * See also:\n *\n * <http://en.wikipedia.org/wiki/Polar_coordinates>\n *\n*/\n\n/*\n   Class: Polar\n\n   A multi purpose polar representation.\n\n   Description:\n \n   The <Polar> class, just like the <Complex> class, is used by the <Hypertree>, <ST> and <RGraph> as a 2D point representation.\n \n   See also:\n \n   <http://en.wikipedia.org/wiki/Polar_coordinates>\n \n   Parameters:\n\n      theta - An angle.\n      rho - The norm.\n*/\n\nvar Polar = function(theta, rho) {\n  this.theta = theta || 0;\n  this.rho = rho || 0;\n};\n\n$jit.Polar = Polar;\n\nPolar.prototype = {\n    /*\n       Method: getc\n    \n       Returns a complex number.\n    \n       Parameters:\n\n       simple - _optional_ If *true*, this method will return only an object holding x and y properties and not a <Complex> instance. Default's *false*.\n\n      Returns:\n    \n          A complex number.\n    */\n    getc: function(simple) {\n        return this.toComplex(simple);\n    },\n\n    /*\n       Method: getp\n    \n       Returns a <Polar> representation.\n    \n       Returns:\n    \n          A variable in polar coordinates.\n    */\n    getp: function() {\n        return this;\n    },\n\n\n    /*\n       Method: set\n    \n       Sets a number.\n\n       Parameters:\n\n       v - A <Complex> or <Polar> instance.\n    \n    */\n    set: function(v) {\n        v = v.getp();\n        this.theta = v.theta; this.rho = v.rho;\n    },\n\n    /*\n       Method: setc\n    \n       Sets a <Complex> number.\n\n       Parameters:\n\n       x - A <Complex> number real part.\n       y - A <Complex> number imaginary part.\n    \n    */\n    setc: function(x, y) {\n        this.rho = Math.sqrt(x * x + y * y);\n        this.theta = Math.atan2(y, x);\n        if(this.theta < 0) this.theta += Math.PI * 2;\n    },\n\n    /*\n       Method: setp\n    \n       Sets a polar number.\n\n       Parameters:\n\n       theta - A <Polar> number angle property.\n       rho - A <Polar> number rho property.\n    \n    */\n    setp: function(theta, rho) {\n        this.theta = theta; \n        this.rho = rho;\n    },\n\n    /*\n       Method: clone\n    \n       Returns a copy of the current object.\n    \n       Returns:\n    \n          A copy of the real object.\n    */\n    clone: function() {\n        return new Polar(this.theta, this.rho);\n    },\n\n    /*\n       Method: toComplex\n    \n        Translates from polar to cartesian coordinates and returns a new <Complex> instance.\n    \n        Parameters:\n\n        simple - _optional_ If *true* this method will only return an object with x and y properties (and not the whole <Complex> instance). Default's *false*.\n \n        Returns:\n    \n          A new <Complex> instance.\n    */\n    toComplex: function(simple) {\n        var x = Math.cos(this.theta) * this.rho;\n        var y = Math.sin(this.theta) * this.rho;\n        if(simple) return { 'x': x, 'y': y};\n        return new Complex(x, y);\n    },\n\n    /*\n       Method: add\n    \n        Adds two <Polar> instances.\n    \n       Parameters:\n\n       polar - A <Polar> number.\n\n       Returns:\n    \n          A new Polar instance.\n    */\n    add: function(polar) {\n        return new Polar(this.theta + polar.theta, this.rho + polar.rho);\n    },\n    \n    /*\n       Method: scale\n    \n        Scales a polar norm.\n    \n        Parameters:\n\n        number - A scale factor.\n        \n        Returns:\n    \n          A new Polar instance.\n    */\n    scale: function(number) {\n        return new Polar(this.theta, this.rho * number);\n    },\n    \n    /*\n       Method: equals\n    \n       Comparison method.\n\n       Returns *true* if the theta and rho properties are equal.\n\n       Parameters:\n\n       c - A <Polar> number.\n\n       Returns:\n\n       *true* if the theta and rho parameters for these objects are equal. *false* otherwise.\n    */\n    equals: function(c) {\n        return this.theta == c.theta && this.rho == c.rho;\n    },\n    \n    /*\n       Method: $add\n    \n        Adds two <Polar> instances affecting the current object.\n    \n       Paramters:\n\n       polar - A <Polar> instance.\n\n       Returns:\n    \n          The changed object.\n    */\n    $add: function(polar) {\n        this.theta = this.theta + polar.theta; this.rho += polar.rho;\n        return this;\n    },\n\n    /*\n       Method: $madd\n    \n        Adds two <Polar> instances affecting the current object. The resulting theta angle is modulo 2pi.\n    \n       Parameters:\n\n       polar - A <Polar> instance.\n\n       Returns:\n    \n          The changed object.\n    */\n    $madd: function(polar) {\n        this.theta = (this.theta + polar.theta) % (Math.PI * 2); this.rho += polar.rho;\n        return this;\n    },\n\n    \n    /*\n       Method: $scale\n    \n        Scales a polar instance affecting the object.\n    \n      Parameters:\n\n      number - A scaling factor.\n\n      Returns:\n    \n          The changed object.\n    */\n    $scale: function(number) {\n        this.rho *= number;\n        return this;\n    },\n    \n    /*\n      Method: isZero\n   \n      Returns *true* if the number is zero.\n   \n   */\n    isZero: function () {\n      var almostZero = 0.0001, abs = Math.abs;\n      return abs(this.theta) < almostZero && abs(this.rho) < almostZero;\n    },\n\n    /*\n       Method: interpolate\n    \n        Calculates a polar interpolation between two points at a given delta moment.\n\n        Parameters:\n      \n        elem - A <Polar> instance.\n        delta - A delta factor ranging [0, 1].\n    \n       Returns:\n    \n          A new <Polar> instance representing an interpolation between _this_ and _elem_\n    */\n    interpolate: function(elem, delta) {\n        var pi = Math.PI, pi2 = pi * 2;\n        var ch = function(t) {\n            var a =  (t < 0)? (t % pi2) + pi2 : t % pi2;\n            return a;\n        };\n        var tt = this.theta, et = elem.theta;\n        var sum, diff = Math.abs(tt - et);\n        if(diff == pi) {\n          if(tt > et) {\n            sum = ch((et + ((tt - pi2) - et) * delta)) ;\n          } else {\n            sum = ch((et - pi2 + (tt - (et)) * delta));\n          }\n        } else if(diff >= pi) {\n          if(tt > et) {\n            sum = ch((et + ((tt - pi2) - et) * delta)) ;\n          } else {\n            sum = ch((et - pi2 + (tt - (et - pi2)) * delta));\n          }\n        } else {  \n          sum = ch((et + (tt - et) * delta)) ;\n        }\n        var r = (this.rho - elem.rho) * delta + elem.rho;\n        return {\n          'theta': sum,\n          'rho': r\n        };\n    }\n};\n\n\nvar $P = function(a, b) { return new Polar(a, b); };\n\nPolar.KER = $P(0, 0);\n\n\n\n/*\n * File: Complex.js\n * \n * Defines the <Complex> class.\n *\n * Description:\n *\n * The <Complex> class, just like the <Polar> class, is used by the <Hypertree>, <ST> and <RGraph> as a 2D point representation.\n *\n * See also:\n *\n * <http://en.wikipedia.org/wiki/Complex_number>\n *\n*/\n\n/*\n   Class: Complex\n    \n   A multi-purpose Complex Class with common methods.\n \n   Description:\n \n   The <Complex> class, just like the <Polar> class, is used by the <Hypertree>, <ST> and <RGraph> as a 2D point representation.\n \n   See also:\n \n   <http://en.wikipedia.org/wiki/Complex_number>\n\n   Parameters:\n\n   x - _optional_ A Complex number real part.\n   y - _optional_ A Complex number imaginary part.\n \n*/\n\nvar Complex = function(x, y) {\n  this.x = x || 0;\n  this.y = y || 0;\n};\n\n$jit.Complex = Complex;\n\nComplex.prototype = {\n    /*\n       Method: getc\n    \n       Returns a complex number.\n    \n       Returns:\n    \n          A complex number.\n    */\n    getc: function() {\n        return this;\n    },\n\n    /*\n       Method: getp\n    \n       Returns a <Polar> representation of this number.\n    \n       Parameters:\n\n       simple - _optional_ If *true*, this method will return only an object holding theta and rho properties and not a <Polar> instance. Default's *false*.\n\n       Returns:\n    \n          A variable in <Polar> coordinates.\n    */\n    getp: function(simple) {\n        return this.toPolar(simple);\n    },\n\n\n    /*\n       Method: set\n    \n       Sets a number.\n\n       Parameters:\n\n       c - A <Complex> or <Polar> instance.\n    \n    */\n    set: function(c) {\n      c = c.getc(true);\n      this.x = c.x; \n      this.y = c.y;\n    },\n\n    /*\n       Method: setc\n    \n       Sets a complex number.\n\n       Parameters:\n\n       x - A <Complex> number Real part.\n       y - A <Complex> number Imaginary part.\n    \n    */\n    setc: function(x, y) {\n        this.x = x; \n        this.y = y;\n    },\n\n    /*\n       Method: setp\n    \n       Sets a polar number.\n\n       Parameters:\n\n       theta - A <Polar> number theta property.\n       rho - A <Polar> number rho property.\n    \n    */\n    setp: function(theta, rho) {\n        this.x = Math.cos(theta) * rho;\n        this.y = Math.sin(theta) * rho;\n    },\n\n    /*\n       Method: clone\n    \n       Returns a copy of the current object.\n    \n       Returns:\n    \n          A copy of the real object.\n    */\n    clone: function() {\n        return new Complex(this.x, this.y);\n    },\n\n    /*\n       Method: toPolar\n    \n       Transforms cartesian to polar coordinates.\n    \n       Parameters:\n\n       simple - _optional_ If *true* this method will only return an object with theta and rho properties (and not the whole <Polar> instance). Default's *false*.\n       \n       Returns:\n    \n          A new <Polar> instance.\n    */\n    \n    toPolar: function(simple) {\n        var rho = this.norm();\n        var atan = Math.atan2(this.y, this.x);\n        if(atan < 0) atan += Math.PI * 2;\n        if(simple) return { 'theta': atan, 'rho': rho };\n        return new Polar(atan, rho);\n    },\n    /*\n       Method: norm\n    \n       Calculates a <Complex> number norm.\n    \n       Returns:\n    \n          A real number representing the complex norm.\n    */\n    norm: function () {\n        return Math.sqrt(this.squaredNorm());\n    },\n    \n    /*\n       Method: squaredNorm\n    \n       Calculates a <Complex> number squared norm.\n    \n       Returns:\n    \n          A real number representing the complex squared norm.\n    */\n    squaredNorm: function () {\n        return this.x*this.x + this.y*this.y;\n    },\n\n    /*\n       Method: add\n    \n       Returns the result of adding two complex numbers.\n       \n       Does not alter the original object.\n\n       Parameters:\n    \n          pos - A <Complex> instance.\n    \n       Returns:\n    \n         The result of adding two complex numbers.\n    */\n    add: function(pos) {\n        return new Complex(this.x + pos.x, this.y + pos.y);\n    },\n\n    /*\n       Method: prod\n    \n       Returns the result of multiplying two <Complex> numbers.\n       \n       Does not alter the original object.\n\n       Parameters:\n    \n          pos - A <Complex> instance.\n    \n       Returns:\n    \n         The result of multiplying two complex numbers.\n    */\n    prod: function(pos) {\n        return new Complex(this.x*pos.x - this.y*pos.y, this.y*pos.x + this.x*pos.y);\n    },\n\n    /*\n       Method: conjugate\n    \n       Returns the conjugate of this <Complex> number.\n\n       Does not alter the original object.\n\n       Returns:\n    \n         The conjugate of this <Complex> number.\n    */\n    conjugate: function() {\n        return new Complex(this.x, -this.y);\n    },\n\n\n    /*\n       Method: scale\n    \n       Returns the result of scaling a <Complex> instance.\n       \n       Does not alter the original object.\n\n       Parameters:\n    \n          factor - A scale factor.\n    \n       Returns:\n    \n         The result of scaling this complex to a factor.\n    */\n    scale: function(factor) {\n        return new Complex(this.x * factor, this.y * factor);\n    },\n\n    /*\n       Method: equals\n    \n       Comparison method.\n\n       Returns *true* if both real and imaginary parts are equal.\n\n       Parameters:\n\n       c - A <Complex> instance.\n\n       Returns:\n\n       A boolean instance indicating if both <Complex> numbers are equal.\n    */\n    equals: function(c) {\n        return this.x == c.x && this.y == c.y;\n    },\n\n    /*\n       Method: $add\n    \n       Returns the result of adding two <Complex> numbers.\n       \n       Alters the original object.\n\n       Parameters:\n    \n          pos - A <Complex> instance.\n    \n       Returns:\n    \n         The result of adding two complex numbers.\n    */\n    $add: function(pos) {\n        this.x += pos.x; this.y += pos.y;\n        return this;    \n    },\n    \n    /*\n       Method: $prod\n    \n       Returns the result of multiplying two <Complex> numbers.\n       \n       Alters the original object.\n\n       Parameters:\n    \n          pos - A <Complex> instance.\n    \n       Returns:\n    \n         The result of multiplying two complex numbers.\n    */\n    $prod:function(pos) {\n        var x = this.x, y = this.y;\n        this.x = x*pos.x - y*pos.y;\n        this.y = y*pos.x + x*pos.y;\n        return this;\n    },\n    \n    /*\n       Method: $conjugate\n    \n       Returns the conjugate for this <Complex>.\n       \n       Alters the original object.\n\n       Returns:\n    \n         The conjugate for this complex.\n    */\n    $conjugate: function() {\n        this.y = -this.y;\n        return this;\n    },\n    \n    /*\n       Method: $scale\n    \n       Returns the result of scaling a <Complex> instance.\n       \n       Alters the original object.\n\n       Parameters:\n    \n          factor - A scale factor.\n    \n       Returns:\n    \n         The result of scaling this complex to a factor.\n    */\n    $scale: function(factor) {\n        this.x *= factor; this.y *= factor;\n        return this;\n    },\n    \n    /*\n       Method: $div\n    \n       Returns the division of two <Complex> numbers.\n       \n       Alters the original object.\n\n       Parameters:\n    \n          pos - A <Complex> number.\n    \n       Returns:\n    \n         The result of scaling this complex to a factor.\n    */\n    $div: function(pos) {\n        var x = this.x, y = this.y;\n        var sq = pos.squaredNorm();\n        this.x = x * pos.x + y * pos.y; this.y = y * pos.x - x * pos.y;\n        return this.$scale(1 / sq);\n    },\n\n    /*\n      Method: isZero\n   \n      Returns *true* if the number is zero.\n   \n   */\n    isZero: function () {\n      var almostZero = 0.0001, abs = Math.abs;\n      return abs(this.x) < almostZero && abs(this.y) < almostZero;\n    }\n};\n\nvar $C = function(a, b) { return new Complex(a, b); };\n\nComplex.KER = $C(0, 0);\n\n\n\n/*\n * File: Graph.js\n *\n*/\n\n/*\n Class: Graph\n\n A Graph Class that provides useful manipulation functions. You can find more manipulation methods in the <Graph.Util> object.\n\n An instance of this class can be accessed by using the *graph* parameter of any tree or graph visualization.\n \n Example:\n\n (start code js)\n   //create new visualization\n   var viz = new $jit.Viz(options);\n   //load JSON data\n   viz.loadJSON(json);\n   //access model\n   viz.graph; //<Graph> instance\n (end code)\n \n Implements:\n \n The following <Graph.Util> methods are implemented in <Graph>\n \n  - <Graph.Util.getNode>\n  - <Graph.Util.eachNode>\n  - <Graph.Util.computeLevels>\n  - <Graph.Util.eachBFS>\n  - <Graph.Util.clean>\n  - <Graph.Util.getClosestNodeToPos>\n  - <Graph.Util.getClosestNodeToOrigin>\n \n*/  \n\n$jit.Graph = new Class({\n\n  initialize: function(opt, Node, Edge, Label) {\n    var innerOptions = {\n    'klass': Complex,\n    'Node': {}\n    };\n    this.Node = Node;\n    this.Edge = Edge;\n    this.Label = Label;\n    this.opt = $.merge(innerOptions, opt || {});\n    this.nodes = {};\n    this.edges = {};\n    \n    //add nodeList methods\n    var that = this;\n    this.nodeList = {};\n    for(var p in Accessors) {\n      that.nodeList[p] = (function(p) {\n        return function() {\n          var args = Array.prototype.slice.call(arguments);\n          that.eachNode(function(n) {\n            n[p].apply(n, args);\n          });\n        };\n      })(p);\n    }\n\n },\n\n/*\n     Method: getNode\n    \n     Returns a <Graph.Node> by *id*.\n\n     Parameters:\n\n     id - (string) A <Graph.Node> id.\n\n     Example:\n\n     (start code js)\n       var node = graph.getNode('nodeId');\n     (end code)\n*/  \n getNode: function(id) {\n    if(this.hasNode(id)) return this.nodes[id];\n    return false;\n },\n\n /*\n     Method: get\n    \n     An alias for <Graph.Util.getNode>. Returns a node by *id*.\n    \n     Parameters:\n    \n     id - (string) A <Graph.Node> id.\n    \n     Example:\n    \n     (start code js)\n       var node = graph.get('nodeId');\n     (end code)\n*/  \n  get: function(id) {\n    return this.getNode(id);\n  },\n\n /*\n   Method: getByName\n  \n   Returns a <Graph.Node> by *name*.\n  \n   Parameters:\n  \n   name - (string) A <Graph.Node> name.\n  \n   Example:\n  \n   (start code js)\n     var node = graph.getByName('someName');\n   (end code)\n  */  \n  getByName: function(name) {\n    for(var id in this.nodes) {\n      var n = this.nodes[id];\n      if(n.name == name) return n;\n    }\n    return false;\n  },\n\n/*\n   Method: getAdjacence\n  \n   Returns a <Graph.Adjacence> object connecting nodes with ids *id* and *id2*.\n\n   Parameters:\n\n   id - (string) A <Graph.Node> id.\n   id2 - (string) A <Graph.Node> id.\n*/  \n  getAdjacence: function (id, id2) {\n    if(id in this.edges) {\n      return this.edges[id][id2];\n    }\n    return false;\n },\n\n    /*\n     Method: addNode\n    \n     Adds a node.\n     \n     Parameters:\n    \n      obj - An object with the properties described below\n\n      id - (string) A node id\n      name - (string) A node's name\n      data - (object) A node's data hash\n\n    See also:\n    <Graph.Node>\n\n  */  \n  addNode: function(obj) { \n   if(!this.nodes[obj.id]) {  \n     var edges = this.edges[obj.id] = {};\n     this.nodes[obj.id] = new Graph.Node($.extend({\n        'id': obj.id,\n        'name': obj.name,\n        'data': $.merge(obj.data || {}, {}),\n        'adjacencies': edges \n      }, this.opt.Node), \n      this.opt.klass, \n      this.Node, \n      this.Edge,\n      this.Label);\n    }\n    return this.nodes[obj.id];\n  },\n  \n    /*\n     Method: addAdjacence\n    \n     Connects nodes specified by *obj* and *obj2*. If not found, nodes are created.\n     \n     Parameters:\n    \n      obj - (object) A <Graph.Node> object.\n      obj2 - (object) Another <Graph.Node> object.\n      data - (object) A data object. Used to store some extra information in the <Graph.Adjacence> object created.\n\n    See also:\n\n    <Graph.Node>, <Graph.Adjacence>\n    */  \n  addAdjacence: function (obj, obj2, data) {\n    if(!this.hasNode(obj.id)) { this.addNode(obj); }\n    if(!this.hasNode(obj2.id)) { this.addNode(obj2); }\n    obj = this.nodes[obj.id]; obj2 = this.nodes[obj2.id];\n    if(!obj.adjacentTo(obj2)) {\n      var adjsObj = this.edges[obj.id] = this.edges[obj.id] || {};\n      var adjsObj2 = this.edges[obj2.id] = this.edges[obj2.id] || {};\n      adjsObj[obj2.id] = adjsObj2[obj.id] = new Graph.Adjacence(obj, obj2, data, this.Edge, this.Label);\n      return adjsObj[obj2.id];\n    }\n    return this.edges[obj.id][obj2.id];\n },\n\n    /*\n     Method: removeNode\n    \n     Removes a <Graph.Node> matching the specified *id*.\n\n     Parameters:\n\n     id - (string) A node's id.\n\n    */  \n  removeNode: function(id) {\n    if(this.hasNode(id)) {\n      delete this.nodes[id];\n      var adjs = this.edges[id];\n      for(var to in adjs) {\n        delete this.edges[to][id];\n      }\n      delete this.edges[id];\n    }\n  },\n  \n/*\n     Method: removeAdjacence\n    \n     Removes a <Graph.Adjacence> matching *id1* and *id2*.\n\n     Parameters:\n\n     id1 - (string) A <Graph.Node> id.\n     id2 - (string) A <Graph.Node> id.\n*/  \n  removeAdjacence: function(id1, id2) {\n    delete this.edges[id1][id2];\n    delete this.edges[id2][id1];\n  },\n\n   /*\n     Method: hasNode\n    \n     Returns a boolean indicating if the node belongs to the <Graph> or not.\n     \n     Parameters:\n    \n        id - (string) Node id.\n   */  \n  hasNode: function(id) {\n    return id in this.nodes;\n  },\n  \n  /*\n    Method: empty\n\n    Empties the Graph\n\n  */\n  empty: function() { this.nodes = {}; this.edges = {};}\n\n});\n\nvar Graph = $jit.Graph;\n\n/*\n Object: Accessors\n \n Defines a set of methods for data, canvas and label styles manipulation implemented by <Graph.Node> and <Graph.Adjacence> instances.\n \n */\nvar Accessors;\n\n(function () {\n  var getDataInternal = function(prefix, prop, type, force, prefixConfig) {\n    var data;\n    type = type || 'current';\n    prefix = \"$\" + (prefix ? prefix + \"-\" : \"\");\n\n    if(type == 'current') {\n      data = this.data;\n    } else if(type == 'start') {\n      data = this.startData;\n    } else if(type == 'end') {\n      data = this.endData;\n    }\n\n    var dollar = prefix + prop;\n\n    if(force) {\n      return data[dollar];\n    }\n\n    if(!this.Config.overridable)\n      return prefixConfig[prop] || 0;\n\n    return (dollar in data) ?\n      data[dollar] : ((dollar in this.data) ? this.data[dollar] : (prefixConfig[prop] || 0));\n  }\n\n  var setDataInternal = function(prefix, prop, value, type) {\n    type = type || 'current';\n    prefix = '$' + (prefix ? prefix + '-' : '');\n\n    var data;\n\n    if(type == 'current') {\n      data = this.data;\n    } else if(type == 'start') {\n      data = this.startData;\n    } else if(type == 'end') {\n      data = this.endData;\n    }\n\n    data[prefix + prop] = value;\n  }\n\n  var removeDataInternal = function(prefix, properties) {\n    prefix = '$' + (prefix ? prefix + '-' : '');\n    var that = this;\n    $.each(properties, function(prop) {\n      var pref = prefix + prop;\n      delete that.data[pref];\n      delete that.endData[pref];\n      delete that.startData[pref];\n    });\n  }\n\n  Accessors = {\n    /*\n    Method: getData\n\n    Returns the specified data value property.\n    This is useful for querying special/reserved <Graph.Node> data properties\n    (i.e dollar prefixed properties).\n\n    Parameters:\n\n      prop  - (string) The name of the property. The dollar sign is not needed. For\n              example *getData(width)* will return *data.$width*.\n      type  - (string) The type of the data property queried. Default's \"current\". You can access *start* and *end* \n              data properties also. These properties are used when making animations.\n      force - (boolean) Whether to obtain the true value of the property (equivalent to\n              *data.$prop*) or to check for *node.overridable = true* first.\n\n    Returns:\n\n      The value of the dollar prefixed property or the global Node/Edge property\n      value if *overridable=false*\n\n    Example:\n    (start code js)\n     node.getData('width'); //will return node.data.$width if Node.overridable=true;\n    (end code)\n    */\n    getData: function(prop, type, force) {\n      return getDataInternal.call(this, \"\", prop, type, force, this.Config);\n    },\n\n\n    /*\n    Method: setData\n\n    Sets the current data property with some specific value.\n    This method is only useful for reserved (dollar prefixed) properties.\n\n    Parameters:\n\n      prop  - (string) The name of the property. The dollar sign is not necessary. For\n              example *setData(width)* will set *data.$width*.\n      value - (mixed) The value to store.\n      type  - (string) The type of the data property to store. Default's \"current\" but\n              can also be \"start\" or \"end\".\n\n    Example:\n    \n    (start code js)\n     node.setData('width', 30);\n    (end code)\n    \n    If we were to make an animation of a node/edge width then we could do\n    \n    (start code js)\n      var node = viz.getNode('nodeId');\n      //set start and end values\n      node.setData('width', 10, 'start');\n      node.setData('width', 30, 'end');\n      //will animate nodes width property\n      viz.fx.animate({\n        modes: ['node-property:width'],\n        duration: 1000\n      });\n    (end code)\n    */\n    setData: function(prop, value, type) {\n      setDataInternal.call(this, \"\", prop, value, type);\n    },\n\n    /*\n    Method: setDataset\n\n    Convenience method to set multiple data values at once.\n    \n    Parameters:\n    \n    types - (array|string) A set of 'current', 'end' or 'start' values.\n    obj - (object) A hash containing the names and values of the properties to be altered.\n\n    Example:\n    (start code js)\n      node.setDataset(['current', 'end'], {\n        'width': [100, 5],\n        'color': ['#fff', '#ccc']\n      });\n      //...or also\n      node.setDataset('end', {\n        'width': 5,\n        'color': '#ccc'\n      });\n    (end code)\n    \n    See also: \n    \n    <Accessors.setData>\n    \n    */\n    setDataset: function(types, obj) {\n      types = $.splat(types);\n      for(var attr in obj) {\n        for(var i=0, val = $.splat(obj[attr]), l=types.length; i<l; i++) {\n          this.setData(attr, val[i], types[i]);\n        }\n      }\n    },\n    \n    /*\n    Method: removeData\n\n    Remove data properties.\n\n    Parameters:\n\n    One or more property names as arguments. The dollar sign is not needed.\n\n    Example:\n    (start code js)\n    node.removeData('width'); //now the default width value is returned\n    (end code)\n    */\n    removeData: function() {\n      removeDataInternal.call(this, \"\", Array.prototype.slice.call(arguments));\n    },\n\n    /*\n    Method: getCanvasStyle\n\n    Returns the specified canvas style data value property. This is useful for\n    querying special/reserved <Graph.Node> canvas style data properties (i.e.\n    dollar prefixed properties that match with $canvas-<name of canvas style>).\n\n    Parameters:\n\n      prop  - (string) The name of the property. The dollar sign is not needed. For\n              example *getCanvasStyle(shadowBlur)* will return *data[$canvas-shadowBlur]*.\n      type  - (string) The type of the data property queried. Default's *current*. You can access *start* and *end* \n              data properties also.\n              \n    Example:\n    (start code js)\n      node.getCanvasStyle('shadowBlur');\n    (end code)\n    \n    See also:\n    \n    <Accessors.getData>\n    */\n    getCanvasStyle: function(prop, type, force) {\n      return getDataInternal.call(\n          this, 'canvas', prop, type, force, this.Config.CanvasStyles);\n    },\n\n    /*\n    Method: setCanvasStyle\n\n    Sets the canvas style data property with some specific value.\n    This method is only useful for reserved (dollar prefixed) properties.\n    \n    Parameters:\n    \n    prop - (string) Name of the property. Can be any canvas property like 'shadowBlur', 'shadowColor', 'strokeStyle', etc.\n    value - (mixed) The value to set to the property.\n    type - (string) Default's *current*. Whether to set *start*, *current* or *end* type properties.\n    \n    Example:\n    \n    (start code js)\n     node.setCanvasStyle('shadowBlur', 30);\n    (end code)\n    \n    If we were to make an animation of a node/edge shadowBlur canvas style then we could do\n    \n    (start code js)\n      var node = viz.getNode('nodeId');\n      //set start and end values\n      node.setCanvasStyle('shadowBlur', 10, 'start');\n      node.setCanvasStyle('shadowBlur', 30, 'end');\n      //will animate nodes canvas style property for nodes\n      viz.fx.animate({\n        modes: ['node-style:shadowBlur'],\n        duration: 1000\n      });\n    (end code)\n    \n    See also:\n    \n    <Accessors.setData>.\n    */\n    setCanvasStyle: function(prop, value, type) {\n      setDataInternal.call(this, 'canvas', prop, value, type);\n    },\n\n    /*\n    Method: setCanvasStyles\n\n    Convenience method to set multiple styles at once.\n\n    Parameters:\n    \n    types - (array|string) A set of 'current', 'end' or 'start' values.\n    obj - (object) A hash containing the names and values of the properties to be altered.\n\n    See also:\n    \n    <Accessors.setDataset>.\n    */\n    setCanvasStyles: function(types, obj) {\n      types = $.splat(types);\n      for(var attr in obj) {\n        for(var i=0, val = $.splat(obj[attr]), l=types.length; i<l; i++) {\n          this.setCanvasStyle(attr, val[i], types[i]);\n        }\n      }\n    },\n\n    /*\n    Method: removeCanvasStyle\n\n    Remove canvas style properties from data.\n\n    Parameters:\n    \n    A variable number of canvas style strings.\n\n    See also:\n    \n    <Accessors.removeData>.\n    */\n    removeCanvasStyle: function() {\n      removeDataInternal.call(this, 'canvas', Array.prototype.slice.call(arguments));\n    },\n\n    /*\n    Method: getLabelData\n\n    Returns the specified label data value property. This is useful for\n    querying special/reserved <Graph.Node> label options (i.e.\n    dollar prefixed properties that match with $label-<name of label style>).\n\n    Parameters:\n\n      prop  - (string) The name of the property. The dollar sign prefix is not needed. For\n              example *getLabelData(size)* will return *data[$label-size]*.\n      type  - (string) The type of the data property queried. Default's *current*. You can access *start* and *end* \n              data properties also.\n              \n    See also:\n    \n    <Accessors.getData>.\n    */\n    getLabelData: function(prop, type, force) {\n      return getDataInternal.call(\n          this, 'label', prop, type, force, this.Label);\n    },\n\n    /*\n    Method: setLabelData\n\n    Sets the current label data with some specific value.\n    This method is only useful for reserved (dollar prefixed) properties.\n\n    Parameters:\n    \n    prop - (string) Name of the property. Can be any canvas property like 'shadowBlur', 'shadowColor', 'strokeStyle', etc.\n    value - (mixed) The value to set to the property.\n    type - (string) Default's *current*. Whether to set *start*, *current* or *end* type properties.\n    \n    Example:\n    \n    (start code js)\n     node.setLabelData('size', 30);\n    (end code)\n    \n    If we were to make an animation of a node label size then we could do\n    \n    (start code js)\n      var node = viz.getNode('nodeId');\n      //set start and end values\n      node.setLabelData('size', 10, 'start');\n      node.setLabelData('size', 30, 'end');\n      //will animate nodes label size\n      viz.fx.animate({\n        modes: ['label-property:size'],\n        duration: 1000\n      });\n    (end code)\n    \n    See also:\n    \n    <Accessors.setData>.\n    */\n    setLabelData: function(prop, value, type) {\n      setDataInternal.call(this, 'label', prop, value, type);\n    },\n\n    /*\n    Method: setLabelDataset\n\n    Convenience function to set multiple label data at once.\n\n    Parameters:\n    \n    types - (array|string) A set of 'current', 'end' or 'start' values.\n    obj - (object) A hash containing the names and values of the properties to be altered.\n\n    See also:\n    \n    <Accessors.setDataset>.\n    */\n    setLabelDataset: function(types, obj) {\n      types = $.splat(types);\n      for(var attr in obj) {\n        for(var i=0, val = $.splat(obj[attr]), l=types.length; i<l; i++) {\n          this.setLabelData(attr, val[i], types[i]);\n        }\n      }\n    },\n\n    /*\n    Method: removeLabelData\n\n    Remove label properties from data.\n    \n    Parameters:\n    \n    A variable number of label property strings.\n\n    See also:\n    \n    <Accessors.removeData>.\n    */\n    removeLabelData: function() {\n      removeDataInternal.call(this, 'label', Array.prototype.slice.call(arguments));\n    }\n  };\n})();\n\n/*\n     Class: Graph.Node\n\n     A <Graph> node.\n     \n     Implements:\n     \n     <Accessors> methods.\n     \n     The following <Graph.Util> methods are implemented by <Graph.Node>\n     \n    - <Graph.Util.eachAdjacency>\n    - <Graph.Util.eachLevel>\n    - <Graph.Util.eachSubgraph>\n    - <Graph.Util.eachSubnode>\n    - <Graph.Util.anySubnode>\n    - <Graph.Util.getSubnodes>\n    - <Graph.Util.getParents>\n    - <Graph.Util.isDescendantOf>     \n*/\nGraph.Node = new Class({\n    \n  initialize: function(opt, klass, Node, Edge, Label) {\n    var innerOptions = {\n      'id': '',\n      'name': '',\n      'data': {},\n      'startData': {},\n      'endData': {},\n      'adjacencies': {},\n\n      'selected': false,\n      'drawn': false,\n      'exist': false,\n\n      'angleSpan': {\n        'begin': 0,\n        'end' : 0\n      },\n\n      'pos': new klass,\n      'startPos': new klass,\n      'endPos': new klass\n    };\n    \n    $.extend(this, $.extend(innerOptions, opt));\n    this.Config = this.Node = Node;\n    this.Edge = Edge;\n    this.Label = Label;\n  },\n\n    /*\n       Method: adjacentTo\n    \n       Indicates if the node is adjacent to the node specified by id\n\n       Parameters:\n    \n          id - (string) A node id.\n    \n       Example:\n       (start code js)\n        node.adjacentTo('nodeId') == true;\n       (end code)\n    */\n    adjacentTo: function(node) {\n        return node.id in this.adjacencies;\n    },\n\n    /*\n       Method: getAdjacency\n    \n       Returns a <Graph.Adjacence> object connecting the current <Graph.Node> and the node having *id* as id.\n\n       Parameters:\n    \n          id - (string) A node id.\n    */  \n    getAdjacency: function(id) {\n        return this.adjacencies[id];\n    },\n\n    /*\n      Method: getPos\n   \n      Returns the position of the node.\n  \n      Parameters:\n   \n         type - (string) Default's *current*. Possible values are \"start\", \"end\" or \"current\".\n   \n      Returns:\n   \n        A <Complex> or <Polar> instance.\n  \n      Example:\n      (start code js)\n       var pos = node.getPos('end');\n      (end code)\n   */\n   getPos: function(type) {\n       type = type || \"current\";\n       if(type == \"current\") {\n         return this.pos;\n       } else if(type == \"end\") {\n         return this.endPos;\n       } else if(type == \"start\") {\n         return this.startPos;\n       }\n   },\n   /*\n     Method: setPos\n  \n     Sets the node's position.\n  \n     Parameters:\n  \n        value - (object) A <Complex> or <Polar> instance.\n        type - (string) Default's *current*. Possible values are \"start\", \"end\" or \"current\".\n  \n     Example:\n     (start code js)\n      node.setPos(new $jit.Complex(0, 0), 'end');\n     (end code)\n  */\n  setPos: function(value, type) {\n      type = type || \"current\";\n      var pos;\n      if(type == \"current\") {\n        pos = this.pos;\n      } else if(type == \"end\") {\n        pos = this.endPos;\n      } else if(type == \"start\") {\n        pos = this.startPos;\n      }\n      pos.set(value);\n  }\n});\n\nGraph.Node.implement(Accessors);\n\n/*\n     Class: Graph.Adjacence\n\n     A <Graph> adjacence (or edge) connecting two <Graph.Nodes>.\n     \n     Implements:\n     \n     <Accessors> methods.\n\n     See also:\n\n     <Graph>, <Graph.Node>\n\n     Properties:\n     \n      nodeFrom - A <Graph.Node> connected by this edge.\n      nodeTo - Another  <Graph.Node> connected by this edge.\n      data - Node data property containing a hash (i.e {}) with custom options.\n*/\nGraph.Adjacence = new Class({\n  \n  initialize: function(nodeFrom, nodeTo, data, Edge, Label) {\n    this.nodeFrom = nodeFrom;\n    this.nodeTo = nodeTo;\n    this.data = data || {};\n    this.startData = {};\n    this.endData = {};\n    this.Config = this.Edge = Edge;\n    this.Label = Label;\n  }\n});\n\nGraph.Adjacence.implement(Accessors);\n\n/*\n   Object: Graph.Util\n\n   <Graph> traversal and processing utility object.\n   \n   Note:\n   \n   For your convenience some of these methods have also been appended to <Graph> and <Graph.Node> classes.\n*/\nGraph.Util = {\n    /*\n       filter\n    \n       For internal use only. Provides a filtering function based on flags.\n    */\n    filter: function(param) {\n        if(!param || !($.type(param) == 'string')) return function() { return true; };\n        var props = param.split(\" \");\n        return function(elem) {\n            for(var i=0; i<props.length; i++) { \n              if(elem[props[i]]) { \n                return false; \n              }\n            }\n            return true;\n        };\n    },\n    /*\n       Method: getNode\n    \n       Returns a <Graph.Node> by *id*.\n       \n       Also implemented by:\n       \n       <Graph>\n\n       Parameters:\n\n       graph - (object) A <Graph> instance.\n       id - (string) A <Graph.Node> id.\n\n       Example:\n\n       (start code js)\n         $jit.Graph.Util.getNode(graph, 'nodeid');\n         //or...\n         graph.getNode('nodeid');\n       (end code)\n    */\n    getNode: function(graph, id) {\n        return graph.nodes[id];\n    },\n    \n    /*\n       Method: eachNode\n    \n       Iterates over <Graph> nodes performing an *action*.\n       \n       Also implemented by:\n       \n       <Graph>.\n\n       Parameters:\n\n       graph - (object) A <Graph> instance.\n       action - (function) A callback function having a <Graph.Node> as first formal parameter.\n\n       Example:\n       (start code js)\n         $jit.Graph.Util.eachNode(graph, function(node) {\n          alert(node.name);\n         });\n         //or...\n         graph.eachNode(function(node) {\n           alert(node.name);\n         });\n       (end code)\n    */\n    eachNode: function(graph, action, flags) {\n        var filter = this.filter(flags);\n        for(var i in graph.nodes) {\n          if(filter(graph.nodes[i])) action(graph.nodes[i]);\n        } \n    },\n    \n    /*\n      Method: each\n   \n      Iterates over <Graph> nodes performing an *action*. It's an alias for <Graph.Util.eachNode>.\n      \n      Also implemented by:\n      \n      <Graph>.\n  \n      Parameters:\n  \n      graph - (object) A <Graph> instance.\n      action - (function) A callback function having a <Graph.Node> as first formal parameter.\n  \n      Example:\n      (start code js)\n        $jit.Graph.Util.each(graph, function(node) {\n         alert(node.name);\n        });\n        //or...\n        graph.each(function(node) {\n          alert(node.name);\n        });\n      (end code)\n   */\n   each: function(graph, action, flags) {\n      this.eachNode(graph, action, flags); \n   },\n\n /*\n       Method: eachAdjacency\n    \n       Iterates over <Graph.Node> adjacencies applying the *action* function.\n       \n       Also implemented by:\n       \n       <Graph.Node>.\n\n       Parameters:\n\n       node - (object) A <Graph.Node>.\n       action - (function) A callback function having <Graph.Adjacence> as first formal parameter.\n\n       Example:\n       (start code js)\n         $jit.Graph.Util.eachAdjacency(node, function(adj) {\n          alert(adj.nodeTo.name);\n         });\n         //or...\n         node.eachAdjacency(function(adj) {\n           alert(adj.nodeTo.name);\n         });\n       (end code)\n    */\n    eachAdjacency: function(node, action, flags) {\n        var adj = node.adjacencies, filter = this.filter(flags);\n        for(var id in adj) {\n          var a = adj[id];\n          if(filter(a)) {\n            if(a.nodeFrom != node) {\n              var tmp = a.nodeFrom;\n              a.nodeFrom = a.nodeTo;\n              a.nodeTo = tmp;\n            }\n            action(a, id);\n          }\n        }\n    },\n\n     /*\n       Method: computeLevels\n    \n       Performs a BFS traversal setting the correct depth for each node.\n        \n       Also implemented by:\n       \n       <Graph>.\n       \n       Note:\n       \n       The depth of each node can then be accessed by \n       >node._depth\n\n       Parameters:\n\n       graph - (object) A <Graph>.\n       id - (string) A starting node id for the BFS traversal.\n       startDepth - (optional|number) A minimum depth value. Default's 0.\n\n    */\n    computeLevels: function(graph, id, startDepth, flags) {\n        startDepth = startDepth || 0;\n        var filter = this.filter(flags);\n        this.eachNode(graph, function(elem) {\n            elem._flag = false;\n            elem._depth = -1;\n        }, flags);\n        var root = graph.getNode(id);\n        root._depth = startDepth;\n        var queue = [root];\n        while(queue.length != 0) {\n            var node = queue.pop();\n            node._flag = true;\n            this.eachAdjacency(node, function(adj) {\n                var n = adj.nodeTo;\n                if(n._flag == false && filter(n)) {\n                    if(n._depth < 0) n._depth = node._depth + 1 + startDepth;\n                    queue.unshift(n);\n                }\n            }, flags);\n        }\n    },\n\n    /*\n       Method: eachBFS\n    \n       Performs a BFS traversal applying *action* to each <Graph.Node>.\n       \n       Also implemented by:\n       \n       <Graph>.\n\n       Parameters:\n\n       graph - (object) A <Graph>.\n       id - (string) A starting node id for the BFS traversal.\n       action - (function) A callback function having a <Graph.Node> as first formal parameter.\n\n       Example:\n       (start code js)\n         $jit.Graph.Util.eachBFS(graph, 'mynodeid', function(node) {\n          alert(node.name);\n         });\n         //or...\n         graph.eachBFS('mynodeid', function(node) {\n           alert(node.name);\n         });\n       (end code)\n    */\n    eachBFS: function(graph, id, action, flags) {\n        var filter = this.filter(flags);\n        this.clean(graph);\n        var queue = [graph.getNode(id)];\n        while(queue.length != 0) {\n            var node = queue.pop();\n            node._flag = true;\n            action(node, node._depth);\n            this.eachAdjacency(node, function(adj) {\n                var n = adj.nodeTo;\n                if(n._flag == false && filter(n)) {\n                    n._flag = true;\n                    queue.unshift(n);\n                }\n            }, flags);\n        }\n    },\n    \n    /*\n       Method: eachLevel\n    \n       Iterates over a node's subgraph applying *action* to the nodes of relative depth between *levelBegin* and *levelEnd*.\n       \n       Also implemented by:\n       \n       <Graph.Node>.\n\n       Parameters:\n       \n       node - (object) A <Graph.Node>.\n       levelBegin - (number) A relative level value.\n       levelEnd - (number) A relative level value.\n       action - (function) A callback function having a <Graph.Node> as first formal parameter.\n\n    */\n    eachLevel: function(node, levelBegin, levelEnd, action, flags) {\n        var d = node._depth, filter = this.filter(flags), that = this;\n        levelEnd = levelEnd === false? Number.MAX_VALUE -d : levelEnd;\n        (function loopLevel(node, levelBegin, levelEnd) {\n            var d = node._depth;\n            if(d >= levelBegin && d <= levelEnd && filter(node)) action(node, d);\n            if(d < levelEnd) {\n                that.eachAdjacency(node, function(adj) {\n                    var n = adj.nodeTo;\n                    if(n._depth > d) loopLevel(n, levelBegin, levelEnd);\n                });\n            }\n        })(node, levelBegin + d, levelEnd + d);      \n    },\n\n    /*\n       Method: eachSubgraph\n    \n       Iterates over a node's children recursively.\n       \n       Also implemented by:\n       \n       <Graph.Node>.\n\n       Parameters:\n       node - (object) A <Graph.Node>.\n       action - (function) A callback function having a <Graph.Node> as first formal parameter.\n\n       Example:\n       (start code js)\n         $jit.Graph.Util.eachSubgraph(node, function(node) {\n           alert(node.name);\n         });\n         //or...\n         node.eachSubgraph(function(node) {\n           alert(node.name);\n         });\n       (end code)\n    */\n    eachSubgraph: function(node, action, flags) {\n      this.eachLevel(node, 0, false, action, flags);\n    },\n\n    /*\n       Method: eachSubnode\n    \n       Iterates over a node's children (without deeper recursion).\n       \n       Also implemented by:\n       \n       <Graph.Node>.\n       \n       Parameters:\n       node - (object) A <Graph.Node>.\n       action - (function) A callback function having a <Graph.Node> as first formal parameter.\n\n       Example:\n       (start code js)\n         $jit.Graph.Util.eachSubnode(node, function(node) {\n          alert(node.name);\n         });\n         //or...\n         node.eachSubnode(function(node) {\n           alert(node.name);\n         });\n       (end code)\n    */\n    eachSubnode: function(node, action, flags) {\n        this.eachLevel(node, 1, 1, action, flags);\n    },\n\n    /*\n       Method: anySubnode\n    \n       Returns *true* if any subnode matches the given condition.\n       \n       Also implemented by:\n       \n       <Graph.Node>.\n\n       Parameters:\n       node - (object) A <Graph.Node>.\n       cond - (function) A callback function returning a Boolean instance. This function has as first formal parameter a <Graph.Node>.\n\n       Example:\n       (start code js)\n         $jit.Graph.Util.anySubnode(node, function(node) { return node.name == \"mynodename\"; });\n         //or...\n         node.anySubnode(function(node) { return node.name == 'mynodename'; });\n       (end code)\n    */\n    anySubnode: function(node, cond, flags) {\n      var flag = false;\n      cond = cond || $.lambda(true);\n      var c = $.type(cond) == 'string'? function(n) { return n[cond]; } : cond;\n      this.eachSubnode(node, function(elem) {\n        if(c(elem)) flag = true;\n      }, flags);\n      return flag;\n    },\n  \n    /*\n       Method: getSubnodes\n    \n       Collects all subnodes for a specified node. \n       The *level* parameter filters nodes having relative depth of *level* from the root node. \n       \n       Also implemented by:\n       \n       <Graph.Node>.\n\n       Parameters:\n       node - (object) A <Graph.Node>.\n       level - (optional|number) Default's *0*. A starting relative depth for collecting nodes.\n\n       Returns:\n       An array of nodes.\n\n    */\n    getSubnodes: function(node, level, flags) {\n        var ans = [], that = this;\n        level = level || 0;\n        var levelStart, levelEnd;\n        if($.type(level) == 'array') {\n            levelStart = level[0];\n            levelEnd = level[1];\n        } else {\n            levelStart = level;\n            levelEnd = Number.MAX_VALUE - node._depth;\n        }\n        this.eachLevel(node, levelStart, levelEnd, function(n) {\n            ans.push(n);\n        }, flags);\n        return ans;\n    },\n  \n  \n    /*\n       Method: getParents\n    \n       Returns an Array of <Graph.Nodes> which are parents of the given node.\n       \n       Also implemented by:\n       \n       <Graph.Node>.\n\n       Parameters:\n       node - (object) A <Graph.Node>.\n\n       Returns:\n       An Array of <Graph.Nodes>.\n\n       Example:\n       (start code js)\n         var pars = $jit.Graph.Util.getParents(node);\n         //or...\n         var pars = node.getParents();\n         \n         if(pars.length > 0) {\n           //do stuff with parents\n         }\n       (end code)\n    */\n    getParents: function(node) {\n        var ans = [];\n        this.eachAdjacency(node, function(adj) {\n            var n = adj.nodeTo;\n            if(n._depth < node._depth) ans.push(n);\n        });\n        return ans;\n    },\n    \n    /*\n    Method: isDescendantOf\n \n    Returns a boolean indicating if some node is descendant of the node with the given id. \n\n    Also implemented by:\n    \n    <Graph.Node>.\n    \n    \n    Parameters:\n    node - (object) A <Graph.Node>.\n    id - (string) A <Graph.Node> id.\n\n    Example:\n    (start code js)\n      $jit.Graph.Util.isDescendantOf(node, \"nodeid\"); //true|false\n      //or...\n      node.isDescendantOf('nodeid');//true|false\n    (end code)\n */\n isDescendantOf: function(node, id) {\n    if(node.id == id) return true;\n    var pars = this.getParents(node), ans = false;\n    for ( var i = 0; !ans && i < pars.length; i++) {\n    ans = ans || this.isDescendantOf(pars[i], id);\n  }\n    return ans;\n },\n\n /*\n     Method: clean\n  \n     Cleans flags from nodes.\n\n     Also implemented by:\n     \n     <Graph>.\n     \n     Parameters:\n     graph - A <Graph> instance.\n  */\n  clean: function(graph) { this.eachNode(graph, function(elem) { elem._flag = false; }); },\n  \n  /* \n    Method: getClosestNodeToOrigin \n  \n    Returns the closest node to the center of canvas.\n  \n    Also implemented by:\n    \n    <Graph>.\n    \n    Parameters:\n   \n     graph - (object) A <Graph> instance.\n     prop - (optional|string) Default's 'current'. A <Graph.Node> position property. Possible properties are 'start', 'current' or 'end'.\n  \n  */\n  getClosestNodeToOrigin: function(graph, prop, flags) {\n   return this.getClosestNodeToPos(graph, Polar.KER, prop, flags);\n  },\n  \n  /* \n    Method: getClosestNodeToPos\n  \n    Returns the closest node to the given position.\n  \n    Also implemented by:\n    \n    <Graph>.\n    \n    Parameters:\n   \n     graph - (object) A <Graph> instance.\n     pos - (object) A <Complex> or <Polar> instance.\n     prop - (optional|string) Default's *current*. A <Graph.Node> position property. Possible properties are 'start', 'current' or 'end'.\n  \n  */\n  getClosestNodeToPos: function(graph, pos, prop, flags) {\n   var node = null;\n   prop = prop || 'current';\n   pos = pos && pos.getc(true) || Complex.KER;\n   var distance = function(a, b) {\n     var d1 = a.x - b.x, d2 = a.y - b.y;\n     return d1 * d1 + d2 * d2;\n   };\n   this.eachNode(graph, function(elem) {\n     node = (node == null || distance(elem.getPos(prop).getc(true), pos) < distance(\n         node.getPos(prop).getc(true), pos)) ? elem : node;\n   }, flags);\n   return node;\n  } \n};\n\n//Append graph methods to <Graph>\n$.each(['get', 'getNode', 'each', 'eachNode', 'computeLevels', 'eachBFS', 'clean', 'getClosestNodeToPos', 'getClosestNodeToOrigin'], function(m) {\n  Graph.prototype[m] = function() {\n    return Graph.Util[m].apply(Graph.Util, [this].concat(Array.prototype.slice.call(arguments)));\n  };\n});\n\n//Append node methods to <Graph.Node>\n$.each(['eachAdjacency', 'eachLevel', 'eachSubgraph', 'eachSubnode', 'anySubnode', 'getSubnodes', 'getParents', 'isDescendantOf'], function(m) {\n  Graph.Node.prototype[m] = function() {\n    return Graph.Util[m].apply(Graph.Util, [this].concat(Array.prototype.slice.call(arguments)));\n  };\n});\n\n/*\n * File: Graph.Op.js\n *\n*/\n\n/*\n   Object: Graph.Op\n\n   Perform <Graph> operations like adding/removing <Graph.Nodes> or <Graph.Adjacences>, \n   morphing a <Graph> into another <Graph>, contracting or expanding subtrees, etc.\n\n*/\nGraph.Op = {\n\n    options: {\n      type: 'nothing',\n      duration: 2000,\n      hideLabels: true,\n      fps:30\n    },\n    \n    initialize: function(viz) {\n      this.viz = viz;\n    },\n\n    /*\n       Method: removeNode\n    \n       Removes one or more <Graph.Nodes> from the visualization. \n       It can also perform several animations like fading sequentially, fading concurrently, iterating or replotting.\n\n       Parameters:\n    \n        node - (string|array) The node's id. Can also be an array having many ids.\n        opt - (object) Animation options. It's an object with optional properties described below\n        type - (string) Default's *nothing*. Type of the animation. Can be \"nothing\", \"replot\", \"fade:seq\",  \"fade:con\" or \"iter\".\n        duration - Described in <Options.Fx>.\n        fps - Described in <Options.Fx>.\n        transition - Described in <Options.Fx>.\n        hideLabels - (boolean) Default's *true*. Hide labels during the animation.\n   \n      Example:\n      (start code js)\n        var viz = new $jit.Viz(options);\n        viz.op.removeNode('nodeId', {\n          type: 'fade:seq',\n          duration: 1000,\n          hideLabels: false,\n          transition: $jit.Trans.Quart.easeOut\n        });\n        //or also\n        viz.op.removeNode(['someId', 'otherId'], {\n          type: 'fade:con',\n          duration: 1500\n        });\n      (end code)\n    */\n  \n    removeNode: function(node, opt) {\n        var viz = this.viz;\n        var options = $.merge(this.options, viz.controller, opt);\n        var n = $.splat(node);\n        var i, that, nodeObj;\n        switch(options.type) {\n            case 'nothing':\n                for(i=0; i<n.length; i++) viz.graph.removeNode(n[i]);\n                break;\n            \n            case 'replot':\n                this.removeNode(n, { type: 'nothing' });\n                viz.labels.clearLabels();\n                viz.refresh(true);\n                break;\n            \n            case 'fade:seq': case 'fade':\n                that = this;\n                //set alpha to 0 for nodes to remove.\n                for(i=0; i<n.length; i++) {\n                    nodeObj = viz.graph.getNode(n[i]);\n                    nodeObj.setData('alpha', 0, 'end');\n                }\n                viz.fx.animate($.merge(options, {\n                    modes: ['node-property:alpha'],\n                    onComplete: function() {\n                        that.removeNode(n, { type: 'nothing' });\n                        viz.labels.clearLabels();\n                        viz.reposition();\n                        viz.fx.animate($.merge(options, {\n                            modes: ['linear']\n                        }));\n                    }\n                }));\n                break;\n            \n            case 'fade:con':\n                that = this;\n                //set alpha to 0 for nodes to remove. Tag them for being ignored on computing positions.\n                for(i=0; i<n.length; i++) {\n                    nodeObj = viz.graph.getNode(n[i]);\n                    nodeObj.setData('alpha', 0, 'end');\n                    nodeObj.ignore = true;\n                }\n                viz.reposition();\n                viz.fx.animate($.merge(options, {\n                    modes: ['node-property:alpha', 'linear'],\n                    onComplete: function() {\n                        that.removeNode(n, { type: 'nothing' });\n                        options.onComplete && options.onComplete();\n                    }\n                }));\n                break;\n            \n            case 'iter':\n                that = this;\n                viz.fx.sequence({\n                    condition: function() { return n.length != 0; },\n                    step: function() { that.removeNode(n.shift(), { type: 'nothing' });  viz.labels.clearLabels(); },\n                    onComplete: function() { options.onComplete && options.onComplete(); },\n                    duration: Math.ceil(options.duration / n.length)\n                });\n                break;\n                \n            default: this.doError();\n        }\n    },\n    \n    /*\n       Method: removeEdge\n    \n       Removes one or more <Graph.Adjacences> from the visualization. \n       It can also perform several animations like fading sequentially, fading concurrently, iterating or replotting.\n\n       Parameters:\n    \n       vertex - (array) An array having two strings which are the ids of the nodes connected by this edge (i.e ['id1', 'id2']). Can also be a two dimensional array holding many edges (i.e [['id1', 'id2'], ['id3', 'id4'], ...]).\n       opt - (object) Animation options. It's an object with optional properties described below\n       type - (string) Default's *nothing*. Type of the animation. Can be \"nothing\", \"replot\", \"fade:seq\",  \"fade:con\" or \"iter\".\n       duration - Described in <Options.Fx>.\n       fps - Described in <Options.Fx>.\n       transition - Described in <Options.Fx>.\n       hideLabels - (boolean) Default's *true*. Hide labels during the animation.\n   \n      Example:\n      (start code js)\n        var viz = new $jit.Viz(options);\n        viz.op.removeEdge(['nodeId', 'otherId'], {\n          type: 'fade:seq',\n          duration: 1000,\n          hideLabels: false,\n          transition: $jit.Trans.Quart.easeOut\n        });\n        //or also\n        viz.op.removeEdge([['someId', 'otherId'], ['id3', 'id4']], {\n          type: 'fade:con',\n          duration: 1500\n        });\n      (end code)\n    \n    */\n    removeEdge: function(vertex, opt) {\n        var viz = this.viz;\n        var options = $.merge(this.options, viz.controller, opt);\n        var v = ($.type(vertex[0]) == 'string')? [vertex] : vertex;\n        var i, that, adj;\n        switch(options.type) {\n            case 'nothing':\n                for(i=0; i<v.length; i++)   viz.graph.removeAdjacence(v[i][0], v[i][1]);\n                break;\n            \n            case 'replot':\n                this.removeEdge(v, { type: 'nothing' });\n                viz.refresh(true);\n                break;\n            \n            case 'fade:seq': case 'fade':\n                that = this;\n                //set alpha to 0 for edges to remove.\n                for(i=0; i<v.length; i++) {\n                    adj = viz.graph.getAdjacence(v[i][0], v[i][1]);\n                    if(adj) {\n                        adj.setData('alpha', 0,'end');\n                    }\n                }\n                viz.fx.animate($.merge(options, {\n                    modes: ['edge-property:alpha'],\n                    onComplete: function() {\n                        that.removeEdge(v, { type: 'nothing' });\n                        viz.reposition();\n                        viz.fx.animate($.merge(options, {\n                            modes: ['linear']\n                        }));\n                    }\n                }));\n                break;\n            \n            case 'fade:con':\n                that = this;\n                //set alpha to 0 for nodes to remove. Tag them for being ignored when computing positions.\n                for(i=0; i<v.length; i++) {\n                    adj = viz.graph.getAdjacence(v[i][0], v[i][1]);\n                    if(adj) {\n                        adj.setData('alpha',0 ,'end');\n                        adj.ignore = true;\n                    }\n                }\n                viz.reposition();\n                viz.fx.animate($.merge(options, {\n                    modes: ['edge-property:alpha', 'linear'],\n                    onComplete: function() {\n                        that.removeEdge(v, { type: 'nothing' });\n                        options.onComplete && options.onComplete();\n                    }\n                }));\n                break;\n            \n            case 'iter':\n                that = this;\n                viz.fx.sequence({\n                    condition: function() { return v.length != 0; },\n                    step: function() { that.removeEdge(v.shift(), { type: 'nothing' }); viz.labels.clearLabels(); },\n                    onComplete: function() { options.onComplete(); },\n                    duration: Math.ceil(options.duration / v.length)\n                });\n                break;\n                \n            default: this.doError();\n        }\n    },\n    \n    /*\n       Method: sum\n    \n       Adds a new graph to the visualization. \n       The JSON graph (or tree) must at least have a common node with the current graph plotted by the visualization. \n       The resulting graph can be defined as follows <http://mathworld.wolfram.com/GraphSum.html>\n\n       Parameters:\n    \n       json - (object) A json tree or graph structure. See also <Loader.loadJSON>.\n       opt - (object) Animation options. It's an object with optional properties described below\n       type - (string) Default's *nothing*. Type of the animation. Can be \"nothing\", \"replot\", \"fade:seq\",  \"fade:con\".\n       duration - Described in <Options.Fx>.\n       fps - Described in <Options.Fx>.\n       transition - Described in <Options.Fx>.\n       hideLabels - (boolean) Default's *true*. Hide labels during the animation.\n   \n      Example:\n      (start code js)\n        //...json contains a tree or graph structure...\n\n        var viz = new $jit.Viz(options);\n        viz.op.sum(json, {\n          type: 'fade:seq',\n          duration: 1000,\n          hideLabels: false,\n          transition: $jit.Trans.Quart.easeOut\n        });\n        //or also\n        viz.op.sum(json, {\n          type: 'fade:con',\n          duration: 1500\n        });\n      (end code)\n    \n    */\n    sum: function(json, opt) {\n        var viz = this.viz;\n        var options = $.merge(this.options, viz.controller, opt), root = viz.root;\n        var graph;\n        viz.root = opt.id || viz.root;\n        switch(options.type) {\n            case 'nothing':\n                graph = viz.construct(json);\n                graph.eachNode(function(elem) {\n                    elem.eachAdjacency(function(adj) {\n                        viz.graph.addAdjacence(adj.nodeFrom, adj.nodeTo, adj.data);\n                    });\n                });\n                break;\n            \n            case 'replot':\n                viz.refresh(true);\n                this.sum(json, { type: 'nothing' });\n                viz.refresh(true);\n                break;\n            \n            case 'fade:seq': case 'fade': case 'fade:con':\n                // START METAMAPS CODE\n                var that = this;\n                // ORIGINAL CODE:\n                // that = this;\n                // END METAMAPS CODE\n                graph = viz.construct(json);\n\n                //set alpha to 0 for nodes to add.\n                var fadeEdges = this.preprocessSum(graph);\n                var modes = !fadeEdges? ['node-property:alpha'] : ['node-property:alpha', 'edge-property:alpha'];\n                viz.reposition();\n                if(options.type != 'fade:con') {\n                    viz.fx.animate($.merge(options, {\n                        modes: ['linear'],\n                        onComplete: function() {\n                            viz.fx.animate($.merge(options, {\n                                modes: modes,\n                                onComplete: function() {\n                                    options.onComplete();\n                                }\n                            }));\n                        }\n                    }));\n                } else {\n                    viz.graph.eachNode(function(elem) {\n                        if (elem.id != root && elem.pos.isZero()) {\n                          elem.pos.set(elem.endPos); \n                          elem.startPos.set(elem.endPos);\n                        }\n                    });\n                    viz.fx.animate($.merge(options, {\n                        modes: ['linear'].concat(modes)\n                    }));\n                }\n                break;\n\n            default: this.doError();\n        }\n    },\n    \n    /*\n       Method: morph\n    \n       This method will transform the current visualized graph into the new JSON representation passed in the method. \n       The JSON object must at least have the root node in common with the current visualized graph.\n\n       Parameters:\n    \n       json - (object) A json tree or graph structure. See also <Loader.loadJSON>.\n       opt - (object) Animation options. It's an object with optional properties described below\n       type - (string) Default's *nothing*. Type of the animation. Can be \"nothing\", \"replot\", \"fade:con\".\n       duration - Described in <Options.Fx>.\n       fps - Described in <Options.Fx>.\n       transition - Described in <Options.Fx>.\n       hideLabels - (boolean) Default's *true*. Hide labels during the animation.\n       id - (string) The shared <Graph.Node> id between both graphs.\n       \n       extraModes - (optional|object) When morphing with an animation, dollar prefixed data parameters are added to \n                    *endData* and not *data* itself. This way you can animate dollar prefixed parameters during your morphing operation. \n                    For animating these extra-parameters you have to specify an object that has animation groups as keys and animation \n                    properties as values, just like specified in <Graph.Plot.animate>.\n   \n      Example:\n      (start code js)\n        //...json contains a tree or graph structure...\n\n        var viz = new $jit.Viz(options);\n        viz.op.morph(json, {\n          type: 'fade',\n          duration: 1000,\n          hideLabels: false,\n          transition: $jit.Trans.Quart.easeOut\n        });\n        //or also\n        viz.op.morph(json, {\n          type: 'fade',\n          duration: 1500\n        });\n        //if the json data contains dollar prefixed params\n        //like $width or $height these too can be animated\n        viz.op.morph(json, {\n          type: 'fade',\n          duration: 1500\n        }, {\n          'node-property': ['width', 'height']\n        });\n      (end code)\n    \n    */\n    morph: function(json, opt, extraModes) {\n        extraModes = extraModes || {};\n        var viz = this.viz;\n        var options = $.merge(this.options, viz.controller, opt), root = viz.root;\n        var graph;\n        //TODO(nico) this hack makes morphing work with the Hypertree. \n        //Need to check if it has been solved and this can be removed.\n        viz.root = opt.id || viz.root;\n        switch(options.type) {\n            case 'nothing':\n                graph = viz.construct(json);\n                graph.eachNode(function(elem) {\n                  var nodeExists = viz.graph.hasNode(elem.id);  \n                  elem.eachAdjacency(function(adj) {\n                    var adjExists = !!viz.graph.getAdjacence(adj.nodeFrom.id, adj.nodeTo.id);\n                    viz.graph.addAdjacence(adj.nodeFrom, adj.nodeTo, adj.data);\n                    //Update data properties if the node existed\n                    if(adjExists) {\n                      var addedAdj = viz.graph.getAdjacence(adj.nodeFrom.id, adj.nodeTo.id);\n                      for(var prop in (adj.data || {})) {\n                        addedAdj.data[prop] = adj.data[prop];\n                      }\n                    }\n                  });\n                  //Update data properties if the node existed\n                  if(nodeExists) {\n                    var addedNode = viz.graph.getNode(elem.id);\n                    for(var prop in (elem.data || {})) {\n                      addedNode.data[prop] = elem.data[prop];\n                    }\n                  }\n                });\n                viz.graph.eachNode(function(elem) {\n                    elem.eachAdjacency(function(adj) {\n                        if(!graph.getAdjacence(adj.nodeFrom.id, adj.nodeTo.id)) {\n                            viz.graph.removeAdjacence(adj.nodeFrom.id, adj.nodeTo.id);\n                        }\n                    });\n                    if(!graph.hasNode(elem.id)) viz.graph.removeNode(elem.id);\n                });\n                \n                break;\n            \n            case 'replot':\n                viz.labels.clearLabels(true);\n                this.morph(json, { type: 'nothing' });\n                viz.refresh(true);\n                viz.refresh(true);\n                break;\n                \n            case 'fade:seq': case 'fade': case 'fade:con':\n                // START METAMAPS CODE\n                var that = this;\n                // ORIGINAL CODE:\n                // that = this;\n                // END METAMAPS CODE\n                graph = viz.construct(json);\n                //preprocessing for nodes to delete.\n                //get node property modes to interpolate\n                var nodeModes = ('node-property' in extraModes) \n                  && $.map($.splat(extraModes['node-property']), \n                      function(n) { return '$' + n; });\n                viz.graph.eachNode(function(elem) {\n                  var graphNode = graph.getNode(elem.id);   \n                  if(!graphNode) {\n                      elem.setData('alpha', 1);\n                      elem.setData('alpha', 1, 'start');\n                      elem.setData('alpha', 0, 'end');\n                      elem.ignore = true;\n                    } else {\n                      //Update node data information\n                      var graphNodeData = graphNode.data;\n                      for(var prop in graphNodeData) {\n                        if(nodeModes && ($.indexOf(nodeModes, prop) > -1)) {\n                          elem.endData[prop] = graphNodeData[prop];\n                        } else {\n                          elem.data[prop] = graphNodeData[prop];\n                        }\n                      }\n                    }\n                }); \n                viz.graph.eachNode(function(elem) {\n                    if(elem.ignore) return;\n                    elem.eachAdjacency(function(adj) {\n                        if(adj.nodeFrom.ignore || adj.nodeTo.ignore) return;\n                        var nodeFrom = graph.getNode(adj.nodeFrom.id);\n                        var nodeTo = graph.getNode(adj.nodeTo.id);\n                        if(!nodeFrom.adjacentTo(nodeTo)) {\n                            var adj = viz.graph.getAdjacence(nodeFrom.id, nodeTo.id);\n                            fadeEdges = true;\n                            adj.setData('alpha', 1);\n                            adj.setData('alpha', 1, 'start');\n                            adj.setData('alpha', 0, 'end');\n                        }\n                    });\n                }); \n                //preprocessing for adding nodes.\n                var fadeEdges = this.preprocessSum(graph);\n\n                var modes = !fadeEdges? ['node-property:alpha'] : \n                                        ['node-property:alpha', \n                                         'edge-property:alpha'];\n                //Append extra node-property animations (if any)\n                modes[0] = modes[0] + (('node-property' in extraModes)? \n                    (':' + $.splat(extraModes['node-property']).join(':')) : '');\n                //Append extra edge-property animations (if any)\n                modes[1] = (modes[1] || 'edge-property:alpha') + (('edge-property' in extraModes)? \n                    (':' + $.splat(extraModes['edge-property']).join(':')) : '');\n                //Add label-property animations (if any)\n                if('label-property' in extraModes) {\n                  modes.push('label-property:' + $.splat(extraModes['label-property']).join(':'))\n                }\n                //only use reposition if its implemented.\n                if (viz.reposition) {\n                  viz.reposition();\n                } else {\n                  viz.compute('end');\n                }\n                viz.graph.eachNode(function(elem) {\n                    if (elem.id != root && elem.pos.getp().equals(Polar.KER)) {\n                      elem.pos.set(elem.endPos); elem.startPos.set(elem.endPos);\n                    }\n                });\n                viz.fx.animate($.merge(options, {\n                    modes: [extraModes.position || 'polar'].concat(modes),\n                    onComplete: function() {\n                        viz.graph.eachNode(function(elem) {\n                            if(elem.ignore) viz.graph.removeNode(elem.id);\n                        });\n                        viz.graph.eachNode(function(elem) {\n                            elem.eachAdjacency(function(adj) {\n                                if(adj.ignore) viz.graph.removeAdjacence(adj.nodeFrom.id, adj.nodeTo.id);\n                            });\n                        });\n                        options.onComplete();\n                    }\n                }));\n                break;\n\n            default:;\n        }\n    },\n\n    \n  /*\n    Method: contract\n \n    Collapses the subtree of the given node. The node will have a _collapsed=true_ property.\n    \n    Parameters:\n \n    node - (object) A <Graph.Node>.\n    opt - (object) An object containing options described below\n    type - (string) Whether to 'replot' or 'animate' the contraction.\n   \n    There are also a number of Animation options. For more information see <Options.Fx>.\n\n    Example:\n    (start code js)\n     var viz = new $jit.Viz(options);\n     viz.op.contract(node, {\n       type: 'animate',\n       duration: 1000,\n       hideLabels: true,\n       transition: $jit.Trans.Quart.easeOut\n     });\n   (end code)\n \n   */\n    contract: function(node, opt) {\n      var viz = this.viz;\n      if(node.collapsed || !node.anySubnode($.lambda(true))) return;\n      opt = $.merge(this.options, viz.config, opt || {}, {\n        'modes': ['node-property:alpha:span', 'linear']\n      });\n      node.collapsed = true;\n      (function subn(n) {\n        n.eachSubnode(function(ch) {\n          ch.ignore = true;\n          ch.setData('alpha', 0, opt.type == 'animate'? 'end' : 'current');\n          subn(ch);\n        });\n      })(node);\n      if(opt.type == 'animate') {\n        viz.compute('end');\n        if(viz.rotated) {\n          viz.rotate(viz.rotated, 'none', {\n            'property':'end'\n          });\n        }\n        (function subn(n) {\n          n.eachSubnode(function(ch) {\n            ch.setPos(node.getPos('end'), 'end');\n            subn(ch);\n          });\n        })(node);\n        viz.fx.animate(opt);\n      } else if(opt.type == 'replot'){\n        viz.refresh();\n      }\n    },\n    \n    /*\n    Method: expand\n \n    Expands the previously contracted subtree. The given node must have the _collapsed=true_ property.\n    \n    Parameters:\n \n    node - (object) A <Graph.Node>.\n    opt - (object) An object containing options described below\n    type - (string) Whether to 'replot' or 'animate'.\n     \n    There are also a number of Animation options. For more information see <Options.Fx>.\n\n    Example:\n    (start code js)\n      var viz = new $jit.Viz(options);\n      viz.op.expand(node, {\n        type: 'animate',\n        duration: 1000,\n        hideLabels: true,\n        transition: $jit.Trans.Quart.easeOut\n      });\n    (end code)\n \n   */\n    expand: function(node, opt) {\n      if(!('collapsed' in node)) return;\n      var viz = this.viz;\n      opt = $.merge(this.options, viz.config, opt || {}, {\n        'modes': ['node-property:alpha:span', 'linear']\n      });\n      delete node.collapsed;\n      (function subn(n) {\n        n.eachSubnode(function(ch) {\n          delete ch.ignore;\n          ch.setData('alpha', 1, opt.type == 'animate'? 'end' : 'current');\n          subn(ch);\n        });\n      })(node);\n      if(opt.type == 'animate') {\n        viz.compute('end');\n        if(viz.rotated) {\n          viz.rotate(viz.rotated, 'none', {\n            'property':'end'\n          });\n        }\n        viz.fx.animate(opt);\n      } else if(opt.type == 'replot'){\n        viz.refresh();\n      }\n    },\n\n    preprocessSum: function(graph) {\n        var viz = this.viz;\n        graph.eachNode(function(elem) {\n            if(!viz.graph.hasNode(elem.id)) {\n                viz.graph.addNode(elem);\n                var n = viz.graph.getNode(elem.id);\n                n.setData('alpha', 0);\n                n.setData('alpha', 0, 'start');\n                n.setData('alpha', 1, 'end');\n            }\n        }); \n        var fadeEdges = false;\n        graph.eachNode(function(elem) {\n            elem.eachAdjacency(function(adj) {\n                var nodeFrom = viz.graph.getNode(adj.nodeFrom.id);\n                var nodeTo = viz.graph.getNode(adj.nodeTo.id);\n                if(!nodeFrom.adjacentTo(nodeTo)) {\n                    var adj = viz.graph.addAdjacence(nodeFrom, nodeTo, adj.data);\n                    if(nodeFrom.startAlpha == nodeFrom.endAlpha \n                    && nodeTo.startAlpha == nodeTo.endAlpha) {\n                        fadeEdges = true;\n                        adj.setData('alpha', 0);\n                        adj.setData('alpha', 0, 'start');\n                        adj.setData('alpha', 1, 'end');\n                    } \n                }\n            });\n        }); \n        return fadeEdges;\n    }\n};\n\n\n\n/*\n   File: Helpers.js\n \n   Helpers are objects that contain rendering primitives (like rectangles, ellipses, etc), for plotting nodes and edges.\n   Helpers also contain implementations of the *contains* method, a method returning a boolean indicating whether the mouse\n   position is over the rendered shape.\n   \n   Helpers are very useful when implementing new NodeTypes, since you can access them through *this.nodeHelper* and \n   *this.edgeHelper* <Graph.Plot> properties, providing you with simple primitives and mouse-position check functions.\n   \n   Example:\n   (start code js)\n   //implement a new node type\n   $jit.Viz.Plot.NodeTypes.implement({\n     'customNodeType': {\n       'render': function(node, canvas) {\n         this.nodeHelper.circle.render ...\n       },\n       'contains': function(node, pos) {\n         this.nodeHelper.circle.contains ...\n       }\n     }\n   });\n   //implement an edge type\n   $jit.Viz.Plot.EdgeTypes.implement({\n     'customNodeType': {\n       'render': function(node, canvas) {\n         this.edgeHelper.circle.render ...\n       },\n       //optional\n       'contains': function(node, pos) {\n         this.edgeHelper.circle.contains ...\n       }\n     }\n   });\n   (end code)\n\n*/\n\n/*\n   Object: NodeHelper\n   \n   Contains rendering and other type of primitives for simple shapes.\n */\nvar NodeHelper = {\n  'none': {\n    'render': $.empty,\n    'contains': $.lambda(false)\n  },\n  /*\n   Object: NodeHelper.circle\n   */\n  'circle': {\n    /*\n     Method: render\n     \n     Renders a circle into the canvas.\n     \n     Parameters:\n     \n     type - (string) Possible options are 'fill' or 'stroke'.\n     pos - (object) An *x*, *y* object with the position of the center of the circle.\n     radius - (number) The radius of the circle to be rendered.\n     canvas - (object) A <Canvas> instance.\n     \n     Example:\n     (start code js)\n     NodeHelper.circle.render('fill', { x: 10, y: 30 }, 30, viz.canvas);\n     (end code)\n     */\n    'render': function(type, pos, radius, canvas){\n      var ctx = canvas.getCtx();\n      ctx.beginPath();\n      ctx.arc(pos.x, pos.y, radius, 0, Math.PI * 2, true);\n      ctx.closePath();\n      ctx[type]();\n    },\n    /*\n    Method: contains\n    \n    Returns *true* if *pos* is contained in the area of the shape. Returns *false* otherwise.\n    \n    Parameters:\n    \n    npos - (object) An *x*, *y* object with the <Graph.Node> position.\n    pos - (object) An *x*, *y* object with the position to check.\n    radius - (number) The radius of the rendered circle.\n    \n    Example:\n    (start code js)\n    NodeHelper.circle.contains({ x: 10, y: 30 }, { x: 15, y: 35 }, 30); //true\n    (end code)\n    */\n    'contains': function(npos, pos, radius){\n      var diffx = npos.x - pos.x, \n          diffy = npos.y - pos.y, \n          diff = diffx * diffx + diffy * diffy;\n      return diff <= radius * radius;\n    }\n  },\n  /*\n  Object: NodeHelper.ellipse\n  */\n  'ellipse': {\n    /*\n    Method: render\n    \n    Renders an ellipse into the canvas.\n    \n    Parameters:\n    \n    type - (string) Possible options are 'fill' or 'stroke'.\n    pos - (object) An *x*, *y* object with the position of the center of the ellipse.\n    width - (number) The width of the ellipse.\n    height - (number) The height of the ellipse.\n    canvas - (object) A <Canvas> instance.\n    \n    Example:\n    (start code js)\n    NodeHelper.ellipse.render('fill', { x: 10, y: 30 }, 30, 40, viz.canvas);\n    (end code)\n    */\n    'render': function(type, pos, width, height, canvas){\n      var ctx = canvas.getCtx(),\n          scalex = 1,\n          scaley = 1,\n          scaleposx = 1,\n          scaleposy = 1,\n          radius = 0;\n\n      if (width > height) {\n          radius = width / 2;\n          scaley = height / width;\n          scaleposy = width / height;\n      } else {\n          radius = height / 2;\n          scalex = width / height;\n          scaleposx = height / width;\n      }\n\n      ctx.save();\n      ctx.scale(scalex, scaley);\n      ctx.beginPath();\n      ctx.arc(pos.x * scaleposx, pos.y * scaleposy, radius, 0, Math.PI * 2, true);\n      ctx.closePath();\n      ctx[type]();\n      ctx.restore();\n    },\n    /*\n    Method: contains\n    \n    Returns *true* if *pos* is contained in the area of the shape. Returns *false* otherwise.\n    \n    Parameters:\n    \n    npos - (object) An *x*, *y* object with the <Graph.Node> position.\n    pos - (object) An *x*, *y* object with the position to check.\n    width - (number) The width of the rendered ellipse.\n    height - (number) The height of the rendered ellipse.\n    \n    Example:\n    (start code js)\n    NodeHelper.ellipse.contains({ x: 10, y: 30 }, { x: 15, y: 35 }, 30, 40);\n    (end code)\n    */\n    'contains': function(npos, pos, width, height){\n      var radius = 0,\n          scalex = 1,\n          scaley = 1,\n          diffx = 0,\n          diffy = 0,\n          diff = 0;\n\n      if (width > height) {\n\t      radius = width / 2;\n\t      scaley = height / width;\n      } else {\n          radius = height / 2;\n          scalex = width / height;\n      }\n\n      diffx = (npos.x - pos.x) * (1 / scalex);\n      diffy = (npos.y - pos.y) * (1 / scaley);\n      diff = diffx * diffx + diffy * diffy;\n      return diff <= radius * radius;\n    }\n  },\n  /*\n  Object: NodeHelper.square\n  */\n  'square': {\n    /*\n    Method: render\n    \n    Renders a square into the canvas.\n    \n    Parameters:\n    \n    type - (string) Possible options are 'fill' or 'stroke'.\n    pos - (object) An *x*, *y* object with the position of the center of the square.\n    dim - (number) The radius (or half-diameter) of the square.\n    canvas - (object) A <Canvas> instance.\n    \n    Example:\n    (start code js)\n    NodeHelper.square.render('stroke', { x: 10, y: 30 }, 40, viz.canvas);\n    (end code)\n    */\n    'render': function(type, pos, dim, canvas){\n      canvas.getCtx()[type + \"Rect\"](pos.x - dim, pos.y - dim, 2*dim, 2*dim);\n    },\n    /*\n    Method: contains\n    \n    Returns *true* if *pos* is contained in the area of the shape. Returns *false* otherwise.\n    \n    Parameters:\n    \n    npos - (object) An *x*, *y* object with the <Graph.Node> position.\n    pos - (object) An *x*, *y* object with the position to check.\n    dim - (number) The radius (or half-diameter) of the square.\n    \n    Example:\n    (start code js)\n    NodeHelper.square.contains({ x: 10, y: 30 }, { x: 15, y: 35 }, 30);\n    (end code)\n    */\n    'contains': function(npos, pos, dim){\n      return Math.abs(pos.x - npos.x) <= dim && Math.abs(pos.y - npos.y) <= dim;\n    }\n  },\n  /*\n  Object: NodeHelper.rectangle\n  */\n  'rectangle': {\n    /*\n    Method: render\n    \n    Renders a rectangle into the canvas.\n    \n    Parameters:\n    \n    type - (string) Possible options are 'fill' or 'stroke'.\n    pos - (object) An *x*, *y* object with the position of the center of the rectangle.\n    width - (number) The width of the rectangle.\n    height - (number) The height of the rectangle.\n    canvas - (object) A <Canvas> instance.\n    \n    Example:\n    (start code js)\n    NodeHelper.rectangle.render('fill', { x: 10, y: 30 }, 30, 40, viz.canvas);\n    (end code)\n    */\n    'render': function(type, pos, width, height, canvas){\n      canvas.getCtx()[type + \"Rect\"](pos.x - width / 2, pos.y - height / 2, \n                                      width, height);\n    },\n    /*\n    Method: contains\n    \n    Returns *true* if *pos* is contained in the area of the shape. Returns *false* otherwise.\n    \n    Parameters:\n    \n    npos - (object) An *x*, *y* object with the <Graph.Node> position.\n    pos - (object) An *x*, *y* object with the position to check.\n    width - (number) The width of the rendered rectangle.\n    height - (number) The height of the rendered rectangle.\n    \n    Example:\n    (start code js)\n    NodeHelper.rectangle.contains({ x: 10, y: 30 }, { x: 15, y: 35 }, 30, 40);\n    (end code)\n    */\n    'contains': function(npos, pos, width, height){\n      return Math.abs(pos.x - npos.x) <= width / 2\n          && Math.abs(pos.y - npos.y) <= height / 2;\n    }\n  },\n  /*\n  Object: NodeHelper.triangle\n  */\n  'triangle': {\n    /*\n    Method: render\n    \n    Renders a triangle into the canvas.\n    \n    Parameters:\n    \n    type - (string) Possible options are 'fill' or 'stroke'.\n    pos - (object) An *x*, *y* object with the position of the center of the triangle.\n    dim - (number) Half the base and half the height of the triangle.\n    canvas - (object) A <Canvas> instance.\n    \n    Example:\n    (start code js)\n    NodeHelper.triangle.render('stroke', { x: 10, y: 30 }, 40, viz.canvas);\n    (end code)\n    */\n    'render': function(type, pos, dim, canvas){\n      var ctx = canvas.getCtx(), \n          c1x = pos.x, \n          c1y = pos.y - dim, \n          c2x = c1x - dim, \n          c2y = pos.y + dim, \n          c3x = c1x + dim, \n          c3y = c2y;\n      ctx.beginPath();\n      ctx.moveTo(c1x, c1y);\n      ctx.lineTo(c2x, c2y);\n      ctx.lineTo(c3x, c3y);\n      ctx.closePath();\n      ctx[type]();\n    },\n    /*\n    Method: contains\n    \n    Returns *true* if *pos* is contained in the area of the shape. Returns *false* otherwise.\n    \n    Parameters:\n    \n    npos - (object) An *x*, *y* object with the <Graph.Node> position.\n    pos - (object) An *x*, *y* object with the position to check.\n    dim - (number) Half the base and half the height of the triangle.\n    \n    Example:\n    (start code js)\n    NodeHelper.triangle.contains({ x: 10, y: 30 }, { x: 15, y: 35 }, 30);\n    (end code)\n    */\n    'contains': function(npos, pos, dim) {\n      return NodeHelper.circle.contains(npos, pos, dim);\n    }\n  },\n  /*\n  Object: NodeHelper.star\n  */\n  'star': {\n    /*\n    Method: render\n    \n    Renders a star (concave decagon) into the canvas.\n    \n    Parameters:\n    \n    type - (string) Possible options are 'fill' or 'stroke'.\n    pos - (object) An *x*, *y* object with the position of the center of the star.\n    dim - (number) The length of a side of a concave decagon.\n    canvas - (object) A <Canvas> instance.\n    \n    Example:\n    (start code js)\n    NodeHelper.star.render('stroke', { x: 10, y: 30 }, 40, viz.canvas);\n    (end code)\n    */\n    'render': function(type, pos, dim, canvas){\n      var ctx = canvas.getCtx(), \n          pi5 = Math.PI / 5;\n      ctx.save();\n      ctx.translate(pos.x, pos.y);\n      ctx.beginPath();\n      ctx.moveTo(dim, 0);\n      for (var i = 0; i < 9; i++) {\n        ctx.rotate(pi5);\n        if (i % 2 == 0) {\n          ctx.lineTo((dim / 0.525731) * 0.200811, 0);\n        } else {\n          ctx.lineTo(dim, 0);\n        }\n      }\n      ctx.closePath();\n      ctx[type]();\n      ctx.restore();\n    },\n    /*\n    Method: contains\n    \n    Returns *true* if *pos* is contained in the area of the shape. Returns *false* otherwise.\n    \n    Parameters:\n    \n    npos - (object) An *x*, *y* object with the <Graph.Node> position.\n    pos - (object) An *x*, *y* object with the position to check.\n    dim - (number) The length of a side of a concave decagon.\n    \n    Example:\n    (start code js)\n    NodeHelper.star.contains({ x: 10, y: 30 }, { x: 15, y: 35 }, 30);\n    (end code)\n    */\n    'contains': function(npos, pos, dim) {\n      return NodeHelper.circle.contains(npos, pos, dim);\n    }\n  }\n};\n\n/*\n  Object: EdgeHelper\n  \n  Contains rendering primitives for simple edge shapes.\n*/\nvar EdgeHelper = {\n  /*\n    Object: EdgeHelper.line\n  */\n  'line': {\n      /*\n      Method: render\n      \n      Renders a line into the canvas.\n      \n      Parameters:\n      \n      from - (object) An *x*, *y* object with the starting position of the line.\n      to - (object) An *x*, *y* object with the ending position of the line.\n      canvas - (object) A <Canvas> instance.\n      \n      Example:\n      (start code js)\n      EdgeHelper.line.render({ x: 10, y: 30 }, { x: 10, y: 50 }, viz.canvas);\n      (end code)\n      */\n      'render': function(from, to, canvas){\n        var ctx = canvas.getCtx();\n        ctx.beginPath();\n        ctx.moveTo(from.x, from.y);\n        ctx.lineTo(to.x, to.y);\n        ctx.stroke();\n      },\n      /*\n      Method: contains\n      \n      Returns *true* if *pos* is contained in the area of the shape. Returns *false* otherwise.\n      \n      Parameters:\n      \n      posFrom - (object) An *x*, *y* object with a <Graph.Node> position.\n      posTo - (object) An *x*, *y* object with a <Graph.Node> position.\n      pos - (object) An *x*, *y* object with the position to check.\n      epsilon - (number) The dimension of the shape.\n      \n      Example:\n      (start code js)\n      EdgeHelper.line.contains({ x: 10, y: 30 }, { x: 15, y: 35 }, { x: 15, y: 35 }, 30);\n      (end code)\n      */\n      'contains': function(posFrom, posTo, pos, epsilon) {\n        var min = Math.min, \n            max = Math.max,\n            minPosX = min(posFrom.x, posTo.x),\n            maxPosX = max(posFrom.x, posTo.x),\n            minPosY = min(posFrom.y, posTo.y),\n            maxPosY = max(posFrom.y, posTo.y);\n          \n        if(pos.x >= minPosX && pos.x <= maxPosX \n            && pos.y >= minPosY && pos.y <= maxPosY) {\n          if(Math.abs(posTo.x - posFrom.x) <= epsilon) {\n            \n            return true;\n          }\n          var dist = (posTo.y - posFrom.y) / (posTo.x - posFrom.x) * (pos.x - posFrom.x) + posFrom.y;\n            \n          return Math.abs(dist - pos.y) <= epsilon;\n        }\n        return false;\n      }\n    },\n  /*\n    Object: EdgeHelper.arrow\n  */\n  'arrow': {\n      /*\n      Method: render\n      \n      Renders an arrow into the canvas.\n      \n      Parameters:\n      \n      from - (object) An *x*, *y* object with the starting position of the arrow.\n      to - (object) An *x*, *y* object with the ending position of the arrow.\n      dim - (number) The dimension of the arrow.\n      swap - (boolean) Whether to set the arrow pointing to the starting position or the ending position.\n      canvas - (object) A <Canvas> instance.\n      \n      Example:\n      (start code js)\n      EdgeHelper.arrow.render({ x: 10, y: 30 }, { x: 10, y: 50 }, 13, false, viz.canvas);\n      (end code)\n      */\n    'render': function(from, to, dim, swap, canvas){\n        var ctx = canvas.getCtx();\n        // invert edge direction\n        if (swap) {\n          var tmp = from;\n          from = to;\n          to = tmp;\n        }\n        var vect = new Complex(to.x - from.x, to.y - from.y);\n        vect.$scale(dim / vect.norm());\n        var intermediatePoint = new Complex(to.x - vect.x, to.y - vect.y),\n            normal = new Complex(-vect.y / 2, vect.x / 2),\n            v1 = intermediatePoint.add(normal), \n            v2 = intermediatePoint.$add(normal.$scale(-1));\n        \n        ctx.beginPath();\n        ctx.moveTo(from.x, from.y);\n        ctx.lineTo(to.x, to.y);\n        ctx.stroke();\n        ctx.beginPath();\n        ctx.moveTo(v1.x, v1.y);\n        ctx.lineTo(v2.x, v2.y);\n        ctx.lineTo(to.x, to.y);\n        ctx.closePath();\n        ctx.fill();\n    },\n    /*\n    Method: contains\n    \n    Returns *true* if *pos* is contained in the area of the shape. Returns *false* otherwise.\n    \n    Parameters:\n    \n    posFrom - (object) An *x*, *y* object with a <Graph.Node> position.\n    posTo - (object) An *x*, *y* object with a <Graph.Node> position.\n    pos - (object) An *x*, *y* object with the position to check.\n    epsilon - (number) The dimension of the shape.\n    \n    Example:\n    (start code js)\n    EdgeHelper.arrow.contains({ x: 10, y: 30 }, { x: 15, y: 35 }, { x: 15, y: 35 }, 30);\n    (end code)\n    */\n    'contains': function(posFrom, posTo, pos, epsilon) {\n      return EdgeHelper.line.contains(posFrom, posTo, pos, epsilon);\n    }\n  },\n  /*\n    Object: EdgeHelper.hyperline\n  */\n  'hyperline': {\n    /*\n    Method: render\n    \n    Renders a hyperline into the canvas. A hyperline are the lines drawn for the <Hypertree> visualization.\n    \n    Parameters:\n    \n    from - (object) An *x*, *y* object with the starting position of the hyperline. *x* and *y* must belong to [0, 1).\n    to - (object) An *x*, *y* object with the ending position of the hyperline. *x* and *y* must belong to [0, 1).\n    r - (number) The scaling factor.\n    canvas - (object) A <Canvas> instance.\n    \n    Example:\n    (start code js)\n    EdgeHelper.hyperline.render({ x: 10, y: 30 }, { x: 10, y: 50 }, 100, viz.canvas);\n    (end code)\n    */\n    'render': function(from, to, r, canvas){\n      var ctx = canvas.getCtx();  \n      var centerOfCircle = computeArcThroughTwoPoints(from, to);\n      if (centerOfCircle.a > 1000 || centerOfCircle.b > 1000\n          || centerOfCircle.ratio < 0) {\n        ctx.beginPath();\n        ctx.moveTo(from.x * r, from.y * r);\n        ctx.lineTo(to.x * r, to.y * r);\n        ctx.stroke();\n      } else {\n        var angleBegin = Math.atan2(to.y - centerOfCircle.y, to.x\n            - centerOfCircle.x);\n        var angleEnd = Math.atan2(from.y - centerOfCircle.y, from.x\n            - centerOfCircle.x);\n        var sense = sense(angleBegin, angleEnd);\n        ctx.beginPath();\n        ctx.arc(centerOfCircle.x * r, centerOfCircle.y * r, centerOfCircle.ratio\n            * r, angleBegin, angleEnd, sense);\n        ctx.stroke();\n      }\n      /*      \n        Calculates the arc parameters through two points.\n        \n        More information in <http://en.wikipedia.org/wiki/Poincar%C3%A9_disc_model#Analytic_geometry_constructions_in_the_hyperbolic_plane> \n      \n        Parameters:\n      \n        p1 - A <Complex> instance.\n        p2 - A <Complex> instance.\n        scale - The Disk's diameter.\n      \n        Returns:\n      \n        An object containing some arc properties.\n      */\n      function computeArcThroughTwoPoints(p1, p2){\n        var aDen = (p1.x * p2.y - p1.y * p2.x), bDen = aDen;\n        var sq1 = p1.squaredNorm(), sq2 = p2.squaredNorm();\n        // Fall back to a straight line\n        if (aDen == 0)\n          return {\n            x: 0,\n            y: 0,\n            ratio: -1\n          };\n    \n        var a = (p1.y * sq2 - p2.y * sq1 + p1.y - p2.y) / aDen;\n        var b = (p2.x * sq1 - p1.x * sq2 + p2.x - p1.x) / bDen;\n        var x = -a / 2;\n        var y = -b / 2;\n        var squaredRatio = (a * a + b * b) / 4 - 1;\n        // Fall back to a straight line\n        if (squaredRatio < 0)\n          return {\n            x: 0,\n            y: 0,\n            ratio: -1\n          };\n        var ratio = Math.sqrt(squaredRatio);\n        var out = {\n          x: x,\n          y: y,\n          ratio: ratio > 1000? -1 : ratio,\n          a: a,\n          b: b\n        };\n    \n        return out;\n      }\n      /*      \n        Sets angle direction to clockwise (true) or counterclockwise (false). \n         \n        Parameters: \n      \n           angleBegin - Starting angle for drawing the arc. \n           angleEnd - The HyperLine will be drawn from angleBegin to angleEnd. \n      \n        Returns: \n      \n           A Boolean instance describing the sense for drawing the HyperLine. \n      */\n      function sense(angleBegin, angleEnd){\n        return (angleBegin < angleEnd)? ((angleBegin + Math.PI > angleEnd)? false\n            : true) : ((angleEnd + Math.PI > angleBegin)? true : false);\n      }\n    },\n    /*\n    Method: contains\n    \n    Not Implemented\n    \n    Returns *true* if *pos* is contained in the area of the shape. Returns *false* otherwise.\n    \n    Parameters:\n    \n    posFrom - (object) An *x*, *y* object with a <Graph.Node> position.\n    posTo - (object) An *x*, *y* object with a <Graph.Node> position.\n    pos - (object) An *x*, *y* object with the position to check.\n    epsilon - (number) The dimension of the shape.\n    \n    Example:\n    (start code js)\n    EdgeHelper.hyperline.contains({ x: 10, y: 30 }, { x: 15, y: 35 }, { x: 15, y: 35 }, 30);\n    (end code)\n    */\n    'contains': $.lambda(false)\n  }\n};\n\n\n/*\n * File: Graph.Plot.js\n */\n\n/*\n   Object: Graph.Plot\n\n   <Graph> rendering and animation methods.\n   \n   Properties:\n   \n   nodeHelper - <NodeHelper> object.\n   edgeHelper - <EdgeHelper> object.\n*/\nGraph.Plot = {\n    //Default initializer\n    initialize: function(viz, klass){\n      this.viz = viz;\n      this.config = viz.config;\n      this.node = viz.config.Node;\n      this.edge = viz.config.Edge;\n      this.animation = new Animation;\n      this.nodeTypes = new klass.Plot.NodeTypes;\n      this.edgeTypes = new klass.Plot.EdgeTypes;\n      this.labels = viz.labels;\n   },\n\n    //Add helpers\n    nodeHelper: NodeHelper,\n    edgeHelper: EdgeHelper,\n    \n    Interpolator: {\n        //node/edge property parsers\n        'map': {\n          'border': 'color',\n          'color': 'color',\n          'width': 'number',\n          'height': 'number',\n          'dim': 'number',\n          'alpha': 'number',\n          'lineWidth': 'number',\n          'angularWidth':'number',\n          'span':'number',\n          'valueArray':'array-number',\n          'dimArray':'array-number'\n          //'colorArray':'array-color'\n        },\n        \n        //canvas specific parsers\n        'canvas': {\n          'globalAlpha': 'number',\n          'fillStyle': 'color',\n          'strokeStyle': 'color',\n          'lineWidth': 'number',\n          'shadowBlur': 'number',\n          'shadowColor': 'color',\n          'shadowOffsetX': 'number',\n          'shadowOffsetY': 'number',\n          'miterLimit': 'number'\n        },\n  \n        //label parsers\n        'label': {\n          'size': 'number',\n          'color': 'color'\n        },\n  \n        //Number interpolator\n        'compute': function(from, to, delta) {\n          return from + (to - from) * delta;\n        },\n        \n        //Position interpolators\n        'moebius': function(elem, props, delta, vector) {\n          var v = vector.scale(-delta);  \n          if(v.norm() < 1) {\n              var x = v.x, y = v.y;\n              var ans = elem.startPos\n                .getc().moebiusTransformation(v);\n              elem.pos.setc(ans.x, ans.y);\n              v.x = x; v.y = y;\n            }           \n        },\n\n        'linear': function(elem, props, delta) {\n            var from = elem.startPos.getc(true);\n            var to = elem.endPos.getc(true);\n            elem.pos.setc(this.compute(from.x, to.x, delta), \n                          this.compute(from.y, to.y, delta));\n        },\n\n        'polar': function(elem, props, delta) {\n          var from = elem.startPos.getp(true);\n          var to = elem.endPos.getp();\n          var ans = to.interpolate(from, delta);\n          elem.pos.setp(ans.theta, ans.rho);\n        },\n        \n        //Graph's Node/Edge interpolators\n        'number': function(elem, prop, delta, getter, setter) {\n          var from = elem[getter](prop, 'start');\n          var to = elem[getter](prop, 'end');\n          elem[setter](prop, this.compute(from, to, delta));\n        },\n\n        'color': function(elem, prop, delta, getter, setter) {\n          var from = $.hexToRgb(elem[getter](prop, 'start'));\n          var to = $.hexToRgb(elem[getter](prop, 'end'));\n          var comp = this.compute;\n          var val = $.rgbToHex([parseInt(comp(from[0], to[0], delta)),\n                                parseInt(comp(from[1], to[1], delta)),\n                                parseInt(comp(from[2], to[2], delta))]);\n          \n          elem[setter](prop, val);\n        },\n        \n        'array-number': function(elem, prop, delta, getter, setter) {\n          var from = elem[getter](prop, 'start'),\n              to = elem[getter](prop, 'end'),\n              cur = [];\n          for(var i=0, l=from.length; i<l; i++) {\n            var fromi = from[i], toi = to[i];\n            if(fromi.length) {\n              for(var j=0, len=fromi.length, curi=[]; j<len; j++) {\n                curi.push(this.compute(fromi[j], toi[j], delta));\n              }\n              cur.push(curi);\n            } else {\n              cur.push(this.compute(fromi, toi, delta));\n            }\n          }\n          elem[setter](prop, cur);\n        },\n        \n        'node': function(elem, props, delta, map, getter, setter) {\n          map = this[map];\n          if(props) {\n            var len = props.length;\n            for(var i=0; i<len; i++) {\n              var pi = props[i];\n              this[map[pi]](elem, pi, delta, getter, setter);\n            }\n          } else {\n            for(var pi in map) {\n              this[map[pi]](elem, pi, delta, getter, setter);\n            }\n          }\n        },\n        \n        'edge': function(elem, props, delta, mapKey, getter, setter) {\n            var adjs = elem.adjacencies;\n            for(var id in adjs) this['node'](adjs[id], props, delta, mapKey, getter, setter);\n        },\n        \n        'node-property': function(elem, props, delta) {\n          this['node'](elem, props, delta, 'map', 'getData', 'setData');\n        },\n        \n        'edge-property': function(elem, props, delta) {\n          this['edge'](elem, props, delta, 'map', 'getData', 'setData');  \n        },\n\n        'label-property': function(elem, props, delta) {\n          this['node'](elem, props, delta, 'label', 'getLabelData', 'setLabelData');\n        },\n        \n        'node-style': function(elem, props, delta) {\n          this['node'](elem, props, delta, 'canvas', 'getCanvasStyle', 'setCanvasStyle');\n        },\n        \n        'edge-style': function(elem, props, delta) {\n          this['edge'](elem, props, delta, 'canvas', 'getCanvasStyle', 'setCanvasStyle');  \n        }\n    },\n    \n  \n    /*\n       sequence\n    \n       Iteratively performs an action while refreshing the state of the visualization.\n\n       Parameters:\n\n       options - (object) An object containing some sequence options described below\n       condition - (function) A function returning a boolean instance in order to stop iterations.\n       step - (function) A function to execute on each step of the iteration.\n       onComplete - (function) A function to execute when the sequence finishes.\n       duration - (number) Duration (in milliseconds) of each step.\n\n      Example:\n       (start code js)\n        var rg = new $jit.RGraph(options);\n        var i = 0;\n        rg.fx.sequence({\n          condition: function() {\n           return i == 10;\n          },\n          step: function() {\n            alert(i++);\n          },\n          onComplete: function() {\n           alert('done!');\n          }\n        });\n       (end code)\n\n    */\n    sequence: function(options) {\n        var that = this;\n        options = $.merge({\n          condition: $.lambda(false),\n          step: $.empty,\n          onComplete: $.empty,\n          duration: 200\n        }, options || {});\n\n        var interval = setInterval(function() {\n          if(options.condition()) {\n            options.step();\n          } else {\n            clearInterval(interval);\n            options.onComplete();\n          }\n          that.viz.refresh(true);\n        }, options.duration);\n    },\n    \n    /*\n      prepare\n \n      Prepare graph position and other attribute values before performing an Animation. \n      This method is used internally by the Toolkit.\n      \n      See also:\n       \n       <Animation>, <Graph.Plot.animate>\n\n    */\n    prepare: function(modes) {\n      var graph = this.viz.graph,\n          accessors = {\n            'node-property': {\n              'getter': 'getData',\n              'setter': 'setData'\n            },\n            'edge-property': {\n              'getter': 'getData',\n              'setter': 'setData'\n            },\n            'node-style': {\n              'getter': 'getCanvasStyle',\n              'setter': 'setCanvasStyle'\n            },\n            'edge-style': {\n              'getter': 'getCanvasStyle',\n              'setter': 'setCanvasStyle'\n            }\n          };\n\n      //parse modes\n      var m = {};\n      if($.type(modes) == 'array') {\n        for(var i=0, len=modes.length; i < len; i++) {\n          var elems = modes[i].split(':');\n          m[elems.shift()] = elems;\n        }\n      } else {\n        for(var p in modes) {\n          if(p == 'position') {\n            m[modes.position] = [];\n          } else {\n            m[p] = $.splat(modes[p]);\n          }\n        }\n      }\n      \n      graph.eachNode(function(node) { \n        node.startPos.set(node.pos);\n        $.each(['node-property', 'node-style'], function(p) {\n          if(p in m) {\n            var prop = m[p];\n            for(var i=0, l=prop.length; i < l; i++) {\n              node[accessors[p].setter](prop[i], node[accessors[p].getter](prop[i]), 'start');\n            }\n          }\n        });\n        $.each(['edge-property', 'edge-style'], function(p) {\n          if(p in m) {\n            var prop = m[p];\n            node.eachAdjacency(function(adj) {\n              for(var i=0, l=prop.length; i < l; i++) {\n                adj[accessors[p].setter](prop[i], adj[accessors[p].getter](prop[i]), 'start');\n              }\n            });\n          }\n        });\n      });\n      return m;\n    },\n    \n    /*\n       Method: animate\n    \n       Animates a <Graph> by interpolating some <Graph.Node>, <Graph.Adjacence> or <Graph.Label> properties.\n\n       Parameters:\n\n       opt - (object) Animation options. The object properties are described below\n       duration - (optional) Described in <Options.Fx>.\n       fps - (optional) Described in <Options.Fx>.\n       hideLabels - (optional|boolean) Whether to hide labels during the animation.\n       modes - (required|object) An object with animation modes (described below).\n\n       Animation modes:\n       \n       Animation modes are strings representing different node/edge and graph properties that you'd like to animate. \n       They are represented by an object that has as keys main categories of properties to animate and as values a list \n       of these specific properties. The properties are described below\n       \n       position - Describes the way nodes' positions must be interpolated. Possible values are 'linear', 'polar' or 'moebius'.\n       node-property - Describes which Node properties will be interpolated. These properties can be any of the ones defined in <Options.Node>.\n       edge-property - Describes which Edge properties will be interpolated. These properties can be any the ones defined in <Options.Edge>.\n       label-property - Describes which Label properties will be interpolated. These properties can be any of the ones defined in <Options.Label> like color or size.\n       node-style - Describes which Node Canvas Styles will be interpolated. These are specific canvas properties like fillStyle, strokeStyle, lineWidth, shadowBlur, shadowColor, shadowOffsetX, shadowOffsetY, etc.\n       edge-style - Describes which Edge Canvas Styles will be interpolated. These are specific canvas properties like fillStyle, strokeStyle, lineWidth, shadowBlur, shadowColor, shadowOffsetX, shadowOffsetY, etc.\n\n       Example:\n       (start code js)\n       var viz = new $jit.Viz(options);\n       //...tweak some Data, CanvasStyles or LabelData properties...\n       viz.fx.animate({\n         modes: {\n           'position': 'linear',\n           'node-property': ['width', 'height'],\n           'node-style': 'shadowColor',\n           'label-property': 'size'\n         },\n         hideLabels: false\n       });\n       //...can also be written like this...\n       viz.fx.animate({\n         modes: ['linear',\n                 'node-property:width:height',\n                 'node-style:shadowColor',\n                 'label-property:size'],\n         hideLabels: false\n       });\n       (end code)\n    */\n    animate: function(opt, versor) {\n      opt = $.merge(this.viz.config, opt || {});\n      var that = this,\n          viz = this.viz,\n          graph  = viz.graph,\n          interp = this.Interpolator,\n          animation =  opt.type === 'nodefx'? this.nodeFxAnimation : this.animation;\n      //prepare graph values\n      var m = this.prepare(opt.modes);\n      \n      //animate\n      if(opt.hideLabels) this.labels.hideLabels(true);\n      animation.setOptions($.extend(opt, {\n        $animating: false,\n        compute: function(delta) {\n          graph.eachNode(function(node) { \n            for(var p in m) {\n              interp[p](node, m[p], delta, versor);\n            }\n          });\n          that.plot(opt, this.$animating, delta);\n          this.$animating = true;\n        },\n        complete: function() {\n          if(opt.hideLabels) that.labels.hideLabels(false);\n          that.plot(opt);\n          opt.onComplete();\n          //TODO(nico): This shouldn't be here!\n          //opt.onAfterCompute();\n        }       \n      })).start();\n    },\n    \n    /*\n      nodeFx\n   \n      Apply animation to node properties like color, width, height, dim, etc.\n  \n      Parameters:\n  \n      options - Animation options. This object properties is described below\n      elements - The Elements to be transformed. This is an object that has a properties\n      \n      (start code js)\n      'elements': {\n        //can also be an array of ids\n        'id': 'id-of-node-to-transform',\n        //properties to be modified. All properties are optional.\n        'properties': {\n          'color': '#ccc', //some color\n          'width': 10, //some width\n          'height': 10, //some height\n          'dim': 20, //some dim\n          'lineWidth': 10 //some line width\n        } \n      }\n      (end code)\n      \n      - _reposition_ Whether to recalculate positions and add a motion animation. \n      This might be used when changing _width_ or _height_ properties in a <Layouts.Tree> like layout. Default's *false*.\n      \n      - _onComplete_ A method that is called when the animation completes.\n      \n      ...and all other <Graph.Plot.animate> options like _duration_, _fps_, _transition_, etc.\n  \n      Example:\n      (start code js)\n       var rg = new RGraph(canvas, config); //can be also Hypertree or ST\n       rg.fx.nodeFx({\n         'elements': {\n           'id':'mynodeid',\n           'properties': {\n             'color':'#ccf'\n           },\n           'transition': Trans.Quart.easeOut\n         }\n       });\n      (end code)    \n   */\n   nodeFx: function(opt) {\n     var viz = this.viz,\n         graph  = viz.graph,\n         animation = this.nodeFxAnimation,\n         options = $.merge(this.viz.config, {\n           'elements': {\n             'id': false,\n             'properties': {}\n           },\n           'reposition': false\n         });\n     opt = $.merge(options, opt || {}, {\n       onBeforeCompute: $.empty,\n       onAfterCompute: $.empty\n     });\n     //check if an animation is running\n     animation.stopTimer();\n     var props = opt.elements.properties;\n     //set end values for nodes\n     if(!opt.elements.id) {\n       graph.eachNode(function(n) {\n         for(var prop in props) {\n           n.setData(prop, props[prop], 'end');\n         }\n       });\n     } else {\n       var ids = $.splat(opt.elements.id);\n       $.each(ids, function(id) {\n         var n = graph.getNode(id);\n         if(n) {\n           for(var prop in props) {\n             n.setData(prop, props[prop], 'end');\n           }\n         }\n       });\n     }\n     //get keys\n     var propnames = [];\n     for(var prop in props) propnames.push(prop);\n     //add node properties modes\n     var modes = ['node-property:' + propnames.join(':')];\n     //set new node positions\n     if(opt.reposition) {\n       modes.push('linear');\n       viz.compute('end');\n     }\n     //animate\n     this.animate($.merge(opt, {\n       modes: modes,\n       type: 'nodefx'\n     }));\n   },\n\n    \n    /*\n       Method: plot\n    \n       Plots a <Graph>.\n\n       Parameters:\n\n       opt - (optional) Plotting options. Most of them are described in <Options.Fx>.\n\n       Example:\n\n       (start code js)\n       var viz = new $jit.Viz(options);\n       viz.fx.plot(); \n       (end code)\n\n    */\n   plot: function(opt, animating) {\n     var viz = this.viz, \n         aGraph = viz.graph, \n         canvas = viz.canvas, \n         id = viz.root, \n         that = this, \n         ctx = canvas.getCtx(), \n         min = Math.min,\n         opt = opt || this.viz.controller;\n     \n     opt.clearCanvas && canvas.clear();\n       \n     var root = aGraph.getNode(id);\n     if(!root) return;\n     \n     var T = !!root.visited;\n    \n    //START METAMAPS CODE\n    if (Metamaps.Mouse.synapseStartCoordinates.length > 0 && Metamaps.Mouse.synapseEndCoordinates) {\n        ctx.save();\n        var start;\n        var end = Metamaps.Mouse.synapseEndCoordinates;\n        \n        var l = Metamaps.Mouse.synapseStartCoordinates.length;\n        for (var i = l - 1; i >= 0; i -= 1) {\n            start = Metamaps.Mouse.synapseStartCoordinates[i];\n            Metamaps.JIT.renderMidArrow(start, end, 13, false, canvas, 0.3, true);\n            Metamaps.JIT.renderMidArrow(start, end, 13, false, canvas, 0.7, true);\n        }\n        ctx.restore();\n    }\n\n    if (Metamaps.Mouse.focusNodeCoords) {\n        ctx.save();\n        Metamaps.JIT.renderMidArrow(Metamaps.Mouse.focusNodeCoords, Metamaps.Mouse.newNodeCoords, 13, false, canvas, 0.3, true);\n        Metamaps.JIT.renderMidArrow(Metamaps.Mouse.focusNodeCoords, Metamaps.Mouse.newNodeCoords, 13, false, canvas, 0.7, true);\n        ctx.restore();\n    }\n\n    if (Metamaps.Mouse.boxStartCoordinates && Metamaps.Mouse.boxEndCoordinates) {\n      ctx.save();\n      ctx.beginPath()\n      ctx.moveTo(Metamaps.Mouse.boxStartCoordinates.x, Metamaps.Mouse.boxStartCoordinates.y)\n      ctx.lineTo(Metamaps.Mouse.boxStartCoordinates.x, Metamaps.Mouse.boxEndCoordinates.y)\n      ctx.lineTo(Metamaps.Mouse.boxEndCoordinates.x, Metamaps.Mouse.boxEndCoordinates.y)\n      ctx.lineTo(Metamaps.Mouse.boxEndCoordinates.x, Metamaps.Mouse.boxStartCoordinates.y)\n      ctx.lineTo(Metamaps.Mouse.boxStartCoordinates.x, Metamaps.Mouse.boxStartCoordinates.y)\n      ctx.strokeStyle = 'black'\n      ctx.stroke()\n      ctx.restore()\n    }\n    //END METAMAPS CODE  \n\n     aGraph.eachNode(function(node) {\n       var nodeAlpha = node.getData('alpha');\n       node.eachAdjacency(function(adj) {\n         var nodeTo = adj.nodeTo;\n         if(!!nodeTo.visited === T && node.drawn && nodeTo.drawn) {\n           !animating && opt.onBeforePlotLine(adj);\n           that.plotLine(adj, canvas, animating);\n           !animating && opt.onAfterPlotLine(adj);\n         }\n       });\n       if(node.drawn) {\n         !animating && opt.onBeforePlotNode(node);\n         that.plotNode(node, canvas, animating);\n         !animating && opt.onAfterPlotNode(node);\n       }\n       if(!that.labelsHidden && opt.withLabels) {\n         if(node.drawn && nodeAlpha >= 0.95) {\n           that.labels.plotLabel(canvas, node, opt);\n         } else {\n           that.labels.hideLabel(node, false);\n         }\n       }\n       node.visited = !T;\n     });\n    },\n\n  /*\n      Plots a Subtree.\n   */\n   plotTree: function(node, opt, animating) {\n       var that = this, \n       viz = this.viz, \n       canvas = viz.canvas,\n       config = this.config,\n       ctx = canvas.getCtx();\n       var nodeAlpha = node.getData('alpha');\n       node.eachSubnode(function(elem) {\n         if(opt.plotSubtree(node, elem) && elem.exist && elem.drawn) {\n             var adj = node.getAdjacency(elem.id);\n             !animating && opt.onBeforePlotLine(adj);\n             that.plotLine(adj, canvas, animating);\n             !animating && opt.onAfterPlotLine(adj);\n             that.plotTree(elem, opt, animating);\n         }\n       });\n       if(node.drawn) {\n           !animating && opt.onBeforePlotNode(node);\n           this.plotNode(node, canvas, animating);\n           !animating && opt.onAfterPlotNode(node);\n           if(!opt.hideLabels && opt.withLabels && nodeAlpha >= 0.95) \n               this.labels.plotLabel(canvas, node, opt);\n           else \n               this.labels.hideLabel(node, false);\n       } else {\n           this.labels.hideLabel(node, true);\n       }\n   },\n\n  /*\n       Method: plotNode\n    \n       Plots a <Graph.Node>.\n\n       Parameters:\n       \n       node - (object) A <Graph.Node>.\n       canvas - (object) A <Canvas> element.\n\n    */\n    plotNode: function(node, canvas, animating) {\n        var f = node.getData('type'), \n            ctxObj = this.node.CanvasStyles;\n        if(f != 'none') {\n          var width = node.getData('lineWidth'),\n              color = node.getData('color'),\n              alpha = node.getData('alpha'),\n              ctx = canvas.getCtx();\n          ctx.save();\n          ctx.lineWidth = width;\n          ctx.fillStyle = ctx.strokeStyle = color;\n          ctx.globalAlpha = alpha;\n          \n          for(var s in ctxObj) {\n            ctx[s] = node.getCanvasStyle(s);\n          }\n\n          this.nodeTypes[f].render.call(this, node, canvas, animating);\n          ctx.restore();\n        }\n    },\n    \n    /*\n       Method: plotLine\n    \n       Plots a <Graph.Adjacence>.\n\n       Parameters:\n\n       adj - (object) A <Graph.Adjacence>.\n       canvas - (object) A <Canvas> instance.\n\n    */\n    plotLine: function(adj, canvas, animating) {\n      var f = adj.getData('type'),\n          ctxObj = this.edge.CanvasStyles;\n      if(f != 'none') {\n        var width = adj.getData('lineWidth'),\n            color = adj.getData('color'),\n            ctx = canvas.getCtx(),\n            nodeFrom = adj.nodeFrom,\n            nodeTo = adj.nodeTo;\n        \n        ctx.save();\n        ctx.lineWidth = width;\n        ctx.fillStyle = ctx.strokeStyle = color;\n        ctx.globalAlpha = Math.min(nodeFrom.getData('alpha'), \n            nodeTo.getData('alpha'), \n            adj.getData('alpha'));\n        \n        for(var s in ctxObj) {\n          ctx[s] = adj.getCanvasStyle(s);\n        }\n\n        this.edgeTypes[f].render.call(this, adj, canvas, animating);\n        ctx.restore();\n      }\n    }    \n  \n};\n\n/*\n  Object: Graph.Plot3D\n  \n  <Graph> 3D rendering and animation methods.\n  \n  Properties:\n  \n  nodeHelper - <NodeHelper> object.\n  edgeHelper - <EdgeHelper> object.\n\n*/\nGraph.Plot3D = $.merge(Graph.Plot, {\n  Interpolator: {\n    'linear': function(elem, props, delta) {\n      var from = elem.startPos.getc(true);\n      var to = elem.endPos.getc(true);\n      elem.pos.setc(this.compute(from.x, to.x, delta), \n                    this.compute(from.y, to.y, delta),\n                    this.compute(from.z, to.z, delta));\n    }\n  },\n  \n  plotNode: function(node, canvas) {\n    if(node.getData('type') == 'none') return;\n    this.plotElement(node, canvas, {\n      getAlpha: function() {\n        return node.getData('alpha');\n      }\n    });\n  },\n  \n  plotLine: function(adj, canvas) {\n    if(adj.getData('type') == 'none') return;\n    this.plotElement(adj, canvas, {\n      getAlpha: function() {\n        return Math.min(adj.nodeFrom.getData('alpha'),\n                        adj.nodeTo.getData('alpha'),\n                        adj.getData('alpha'));\n      }\n    });\n  },\n  \n  plotElement: function(elem, canvas, opt) {\n    var gl = canvas.getCtx(),\n        viewMatrix = new Matrix4,\n        lighting = canvas.config.Scene.Lighting,\n        wcanvas = canvas.canvases[0],\n        program = wcanvas.program,\n        camera = wcanvas.camera;\n    \n    if(!elem.geometry) {\n      elem.geometry = new O3D[elem.getData('type')];\n    }\n    elem.geometry.update(elem);\n    if(!elem.webGLVertexBuffer) {\n      var vertices = [],\n          faces = [],\n          normals = [],\n          vertexIndex = 0,\n          geom = elem.geometry;\n      \n      for(var i=0, vs=geom.vertices, fs=geom.faces, fsl=fs.length; i<fsl; i++) {\n        var face = fs[i],\n            v1 = vs[face.a],\n            v2 = vs[face.b],\n            v3 = vs[face.c],\n            v4 = face.d? vs[face.d] : false,\n            n = face.normal;\n        \n        vertices.push(v1.x, v1.y, v1.z);\n        vertices.push(v2.x, v2.y, v2.z);\n        vertices.push(v3.x, v3.y, v3.z);\n        if(v4) vertices.push(v4.x, v4.y, v4.z);\n            \n        normals.push(n.x, n.y, n.z);\n        normals.push(n.x, n.y, n.z);\n        normals.push(n.x, n.y, n.z);\n        if(v4) normals.push(n.x, n.y, n.z);\n            \n        faces.push(vertexIndex, vertexIndex +1, vertexIndex +2);\n        if(v4) {\n          faces.push(vertexIndex, vertexIndex +2, vertexIndex +3);\n          vertexIndex += 4;\n        } else {\n          vertexIndex += 3;\n        }\n      }\n      //create and store vertex data\n      elem.webGLVertexBuffer = gl.createBuffer();\n      gl.bindBuffer(gl.ARRAY_BUFFER, elem.webGLVertexBuffer);\n      gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(vertices), gl.STATIC_DRAW);\n      //create and store faces index data\n      elem.webGLFaceBuffer = gl.createBuffer();\n      gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, elem.webGLFaceBuffer);\n      gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, new Uint16Array(faces), gl.STATIC_DRAW);\n      elem.webGLFaceCount = faces.length;\n      //calculate vertex normals and store them\n      elem.webGLNormalBuffer = gl.createBuffer();\n      gl.bindBuffer(gl.ARRAY_BUFFER, elem.webGLNormalBuffer);\n      gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(normals), gl.STATIC_DRAW);\n    }\n    viewMatrix.multiply(camera.matrix, elem.geometry.matrix);\n    //send matrix data\n    gl.uniformMatrix4fv(program.viewMatrix, false, viewMatrix.flatten());\n    gl.uniformMatrix4fv(program.projectionMatrix, false, camera.projectionMatrix.flatten());\n    //send normal matrix for lighting\n    var normalMatrix = Matrix4.makeInvert(viewMatrix);\n    normalMatrix.$transpose();\n    gl.uniformMatrix4fv(program.normalMatrix, false, normalMatrix.flatten());\n    //send color data\n    var color = $.hexToRgb(elem.getData('color'));\n    color.push(opt.getAlpha());\n    gl.uniform4f(program.color, color[0] / 255, color[1] / 255, color[2] / 255, color[3]);\n    //send lighting data\n    gl.uniform1i(program.enableLighting, lighting.enable);\n    if(lighting.enable) {\n      //set ambient light color\n      if(lighting.ambient) {\n        var acolor = lighting.ambient;\n        gl.uniform3f(program.ambientColor, acolor[0], acolor[1], acolor[2]);\n      }\n      //set directional light\n      if(lighting.directional) {\n        var dir = lighting.directional,\n            color = dir.color,\n            pos = dir.direction,\n            vd = new Vector3(pos.x, pos.y, pos.z).normalize().$scale(-1);\n        gl.uniform3f(program.lightingDirection, vd.x, vd.y, vd.z);\n        gl.uniform3f(program.directionalColor, color[0], color[1], color[2]);\n      }\n    }\n    //send vertices data\n    gl.bindBuffer(gl.ARRAY_BUFFER, elem.webGLVertexBuffer);\n    gl.vertexAttribPointer(program.position, 3, gl.FLOAT, false, 0, 0);\n    //send normals data\n    gl.bindBuffer(gl.ARRAY_BUFFER, elem.webGLNormalBuffer);\n    gl.vertexAttribPointer(program.normal, 3, gl.FLOAT, false, 0, 0);\n    //draw!\n    gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, elem.webGLFaceBuffer );\n    gl.drawElements(gl.TRIANGLES, elem.webGLFaceCount, gl.UNSIGNED_SHORT, 0);\n  }\n});\n\n\n/*\n * File: Graph.Label.js\n *\n*/\n\n/*\n   Object: Graph.Label\n\n   An interface for plotting/hiding/showing labels.\n\n   Description:\n\n   This is a generic interface for plotting/hiding/showing labels.\n   The <Graph.Label> interface is implemented in multiple ways to provide\n   different label types.\n\n   For example, the Graph.Label interface is implemented as <Graph.Label.HTML> to provide\n   HTML label elements. Also we provide the <Graph.Label.SVG> interface for SVG type labels. \n   The <Graph.Label.Native> interface implements these methods with the native Canvas text rendering functions.\n   \n   All subclasses (<Graph.Label.HTML>, <Graph.Label.SVG> and <Graph.Label.Native>) implement the method plotLabel.\n*/\n\nGraph.Label = {};\n\n/*\n   Class: Graph.Label.Native\n\n   Implements labels natively, using the Canvas text API.\n*/\nGraph.Label.Native = new Class({\n    initialize: function(viz) {\n      this.viz = viz;\n    },\n\n    /*\n       Method: plotLabel\n\n       Plots a label for a given node.\n\n       Parameters:\n\n       canvas - (object) A <Canvas> instance.\n       node - (object) A <Graph.Node>.\n       controller - (object) A configuration object.\n       \n       Example:\n       \n       (start code js)\n       var viz = new $jit.Viz(options);\n       var node = viz.graph.getNode('nodeId');\n       viz.labels.plotLabel(viz.canvas, node, viz.config);\n       (end code)\n    */\n    plotLabel: function(canvas, node, controller) {\n      \n      var ctx = canvas.getCtx();\n      var pos = node.pos.getc(true);\n\n      ctx.font = node.getLabelData('style') + ' ' + node.getLabelData('size') + 'px ' + node.getLabelData('family');\n      ctx.textAlign = node.getLabelData('textAlign');\n      // ORIGINAL CODE ctx.fillStyle = ctx.strokeStyle = node.getLabelData('color');\n      ctx.textBaseline = node.getLabelData('textBaseline');\n      \n      //START METAMAPS CODE\n      \n      var arrayOfLabelLines = Metamaps.Util.splitLine(node.name, 25).split('\\n');\n      //render background\n            ctx.fillStyle = ctx.strokeStyle = Metamaps.Settings.colors.labels.background;\n            ctx.lineWidth = 2;\n            var height = 25 * arrayOfLabelLines.length; //font size + margin\n            \n            var index, lineWidths = [];\n            for (index = 0; index < arrayOfLabelLines.length; ++index) {\n              lineWidths.push( ctx.measureText( arrayOfLabelLines[index] ).width )\n            }\n            var width = Math.max.apply(null, lineWidths) + 8;\n            var x = pos.x - width/2;\n            var y = pos.y + node.getData(\"height\") + 5;\n            var radius = 5;\n            \n              ctx.beginPath();\n              ctx.moveTo(x + radius, y);\n              ctx.lineTo(x + width - radius, y);\n              ctx.quadraticCurveTo(x + width, y, x + width, y + radius);\n              ctx.lineTo(x + width, y + height - radius);\n              ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);\n              ctx.lineTo(x + radius, y + height);\n              ctx.quadraticCurveTo(x, y + height, x, y + height - radius);\n              ctx.lineTo(x, y + radius);\n              ctx.quadraticCurveTo(x, y, x + radius, y);\n              ctx.closePath();\n              ctx.fill();\n              //ctx.stroke();\n       \n       ctx.fillStyle = ctx.strokeStyle = node.getLabelData('color');\n\n      this.renderLabel(arrayOfLabelLines, canvas, node, controller);\n      // END METAMAPS CODE\n      // ORIGINAL CODE  this.renderLabel(canvas, node, controller);\n    },\n\n    /*\n       renderLabel\n\n       Does the actual rendering of the label in the canvas. The default\n       implementation renders the label close to the position of the node, this\n       method should be overriden to position the labels differently.\n\n       Parameters:\n\n       canvas - A <Canvas> instance.\n       node - A <Graph.Node>.\n       controller - A configuration object. See also <Hypertree>, <RGraph>, <ST>.\n    */\n    renderLabel: function(customLabel, canvas, node, controller) {\n      var ctx = canvas.getCtx();\n      var pos = node.pos.getc(true);\n      //ctx.fillText(node.name, pos.x, pos.y + node.getData(\"height\") / 2);\n      // START METAMAPS CODE\n      var index;\n      for (index = 0; index < customLabel.length; ++index) {\n        ctx.fillText(customLabel[index], pos.x, pos.y + node.getData(\"height\") + 23 + (25*index));\n      }\n      // END METAMAPS CODE\n    },\n\n    hideLabel: $.empty,\n    hideLabels: $.empty\n});\n\n/*\n   Class: Graph.Label.DOM\n\n   Abstract Class implementing some DOM label methods.\n\n   Implemented by:\n\n   <Graph.Label.HTML> and <Graph.Label.SVG>.\n\n*/\nGraph.Label.DOM = new Class({\n    //A flag value indicating if node labels are being displayed or not.\n    labelsHidden: false,\n    //Label container\n    labelContainer: false,\n    //Label elements hash.\n    labels: {},\n\n    /*\n       Method: getLabelContainer\n\n       Lazy fetcher for the label container.\n\n       Returns:\n\n       The label container DOM element.\n\n       Example:\n\n      (start code js)\n        var viz = new $jit.Viz(options);\n        var labelContainer = viz.labels.getLabelContainer();\n        alert(labelContainer.innerHTML);\n      (end code)\n    */\n    getLabelContainer: function() {\n      return this.labelContainer ?\n        this.labelContainer :\n        this.labelContainer = document.getElementById(this.viz.config.labelContainer);\n    },\n\n    /*\n       Method: getLabel\n\n       Lazy fetcher for the label element.\n\n       Parameters:\n\n       id - (string) The label id (which is also a <Graph.Node> id).\n\n       Returns:\n\n       The label element.\n\n       Example:\n\n      (start code js)\n        var viz = new $jit.Viz(options);\n        var label = viz.labels.getLabel('someid');\n        alert(label.innerHTML);\n      (end code)\n\n    */\n    getLabel: function(id) {\n      return (id in this.labels && this.labels[id] != null) ?\n        this.labels[id] :\n        this.labels[id] = document.getElementById(id);\n    },\n\n    /*\n       Method: hideLabels\n\n       Hides all labels (by hiding the label container).\n\n       Parameters:\n\n       hide - (boolean) A boolean value indicating if the label container must be hidden or not.\n\n       Example:\n       (start code js)\n        var viz = new $jit.Viz(options);\n        rg.labels.hideLabels(true);\n       (end code)\n\n    */\n    hideLabels: function (hide) {\n      var container = this.getLabelContainer();\n      if(hide)\n        container.style.display = 'none';\n      else\n        container.style.display = '';\n      this.labelsHidden = hide;\n    },\n\n    /*\n       Method: clearLabels\n\n       Clears the label container.\n\n       Useful when using a new visualization with the same canvas element/widget.\n\n       Parameters:\n\n       force - (boolean) Forces deletion of all labels.\n\n       Example:\n       (start code js)\n        var viz = new $jit.Viz(options);\n        viz.labels.clearLabels();\n        (end code)\n    */\n    clearLabels: function(force) {\n      for(var id in this.labels) {\n        if (force || !this.viz.graph.hasNode(id)) {\n          this.disposeLabel(id);\n          delete this.labels[id];\n        }\n      }\n    },\n\n    /*\n       Method: disposeLabel\n\n       Removes a label.\n\n       Parameters:\n\n       id - (string) A label id (which generally is also a <Graph.Node> id).\n\n       Example:\n       (start code js)\n        var viz = new $jit.Viz(options);\n        viz.labels.disposeLabel('labelid');\n       (end code)\n    */\n    disposeLabel: function(id) {\n      var elem = this.getLabel(id);\n      if(elem && elem.parentNode) {\n        elem.parentNode.removeChild(elem);\n      }\n    },\n\n    /*\n       Method: hideLabel\n\n       Hides the corresponding <Graph.Node> label.\n\n       Parameters:\n\n       node - (object) A <Graph.Node>. Can also be an array of <Graph.Nodes>.\n       show - (boolean) If *true*, nodes will be shown. Otherwise nodes will be hidden.\n\n       Example:\n       (start code js)\n        var rg = new $jit.Viz(options);\n        viz.labels.hideLabel(viz.graph.getNode('someid'), false);\n       (end code)\n    */\n    hideLabel: function(node, show) {\n      node = $.splat(node);\n      var st = show ? \"\" : \"none\", lab, that = this;\n      $.each(node, function(n) {\n        var lab = that.getLabel(n.id);\n        if (lab) {\n          lab.style.display = st;\n        }\n      });\n    },\n\n    /*\n       fitsInCanvas\n\n       Returns _true_ or _false_ if the label for the node is contained in the canvas dom element or not.\n\n       Parameters:\n\n       pos - A <Complex> instance (I'm doing duck typing here so any object with _x_ and _y_ parameters will do).\n       canvas - A <Canvas> instance.\n\n       Returns:\n\n       A boolean value specifying if the label is contained in the <Canvas> DOM element or not.\n\n    */\n    fitsInCanvas: function(pos, canvas) {\n      var size = canvas.getSize();\n      if(pos.x >= size.width || pos.x < 0\n         || pos.y >= size.height || pos.y < 0) return false;\n       return true;\n    }\n});\n\n/*\n   Class: Graph.Label.HTML\n\n   Implements HTML labels.\n\n   Extends:\n\n   All <Graph.Label.DOM> methods.\n\n*/\nGraph.Label.HTML = new Class({\n    Implements: Graph.Label.DOM,\n\n    /*\n       Method: plotLabel\n\n       Plots a label for a given node.\n\n       Parameters:\n\n       canvas - (object) A <Canvas> instance.\n       node - (object) A <Graph.Node>.\n       controller - (object) A configuration object.\n       \n      Example:\n       \n       (start code js)\n       var viz = new $jit.Viz(options);\n       var node = viz.graph.getNode('nodeId');\n       viz.labels.plotLabel(viz.canvas, node, viz.config);\n       (end code)\n\n\n    */\n    plotLabel: function(canvas, node, controller) {\n      var id = node.id, tag = this.getLabel(id);\n\n      if(!tag && !(tag = document.getElementById(id))) {\n        tag = document.createElement('div');\n        var container = this.getLabelContainer();\n        tag.id = id;\n        tag.className = 'node';\n        tag.style.position = 'absolute';\n        controller.onCreateLabel(tag, node);\n        container.appendChild(tag);\n        this.labels[node.id] = tag;\n      }\n\n      this.placeLabel(tag, node, controller);\n    }\n});\n\n/*\n   Class: Graph.Label.SVG\n\n   Implements SVG labels.\n\n   Extends:\n\n   All <Graph.Label.DOM> methods.\n*/\nGraph.Label.SVG = new Class({\n    Implements: Graph.Label.DOM,\n\n    /*\n       Method: plotLabel\n\n       Plots a label for a given node.\n\n       Parameters:\n\n       canvas - (object) A <Canvas> instance.\n       node - (object) A <Graph.Node>.\n       controller - (object) A configuration object.\n       \n       Example:\n       \n       (start code js)\n       var viz = new $jit.Viz(options);\n       var node = viz.graph.getNode('nodeId');\n       viz.labels.plotLabel(viz.canvas, node, viz.config);\n       (end code)\n\n\n    */\n    plotLabel: function(canvas, node, controller) {\n      var id = node.id, tag = this.getLabel(id);\n      if(!tag && !(tag = document.getElementById(id))) {\n        var ns = 'http://www.w3.org/2000/svg';\n          tag = document.createElementNS(ns, 'svg:text');\n        var tspan = document.createElementNS(ns, 'svg:tspan');\n        tag.appendChild(tspan);\n        var container = this.getLabelContainer();\n        tag.setAttribute('id', id);\n        tag.setAttribute('class', 'node');\n        container.appendChild(tag);\n        controller.onCreateLabel(tag, node);\n        this.labels[node.id] = tag;\n      }\n      this.placeLabel(tag, node, controller);\n    }\n});\n\n\n\n/*\n * File: Loader.js\n * \n */\n\n/*\n   Object: Loader\n\n   Provides methods for loading and serving JSON data.\n*/\nvar Loader = {\n     construct: function(json) {\n        var isGraph = ($.type(json) == 'array');\n        var ans = new Graph(this.graphOptions, this.config.Node, this.config.Edge, this.config.Label);\n        if(!isGraph) \n            //make tree\n            (function (ans, json) {\n                ans.addNode(json);\n                if(json.children) {\n                  for(var i=0, ch = json.children; i<ch.length; i++) {\n                    ans.addAdjacence(json, ch[i]);\n                    arguments.callee(ans, ch[i]);\n                  }\n                }\n            })(ans, json);\n        else\n            //make graph\n            (function (ans, json) {\n                var getNode = function(id) {\n                  for(var i=0, l=json.length; i<l; i++) {\n                    if(json[i].id == id) {\n                      return json[i];\n                    }\n                  }\n                  // The node was not defined in the JSON\n                  // Let's create it\n                  var newNode = {\n                \t\t\"id\" : id,\n                \t\t\"name\" : id\n                \t};\n                  return ans.addNode(newNode);\n                };\n\n                for(var i=0, l=json.length; i<l; i++) {\n                  ans.addNode(json[i]);\n                  var adj = json[i].adjacencies;\n                  if (adj) {\n                    for(var j=0, lj=adj.length; j<lj; j++) {\n                      var node = adj[j], data = {};\n                      if(typeof adj[j] != 'string') {\n                        data = $.merge(node.data, {});\n                        node = node.nodeTo;\n                      }\n                      ans.addAdjacence(json[i], getNode(node), data);\n                    }\n                  }\n                }\n            })(ans, json);\n\n        return ans;\n    },\n\n    /*\n     Method: loadJSON\n    \n     Loads a JSON structure to the visualization. The JSON structure can be a JSON *tree* or *graph* structure.\n     \n      A JSON tree or graph structure consists of nodes, each having as properties\n       \n       id - (string) A unique identifier for the node\n       name - (string) A node's name\n       data - (object) The data optional property contains a hash (i.e {}) \n       where you can store all the information you want about this node.\n        \n      For JSON *Tree* structures, there's an extra optional property *children* of type Array which contains the node's children.\n      \n      Example:\n\n      (start code js)\n        var json = {  \n          \"id\": \"aUniqueIdentifier\",  \n          \"name\": \"usually a nodes name\",  \n          \"data\": {\n            \"some key\": \"some value\",\n            \"some other key\": \"some other value\"\n           },  \n          \"children\": [ *other nodes or empty* ]  \n        };  \n      (end code)\n        \n        JSON *Graph* structures consist of an array of nodes, each specifying the nodes to which the current node is connected. \n        For JSON *Graph* structures, the *children* property is replaced by the *adjacencies* property.\n        \n        There are two types of *Graph* structures, *simple* and *extended* graph structures.\n        \n        For *simple* Graph structures, the adjacencies property contains an array of strings, each specifying the \n        id of the node connected to the main node.\n        \n        Example:\n        \n        (start code js)\n        var json = [  \n          {  \n            \"id\": \"aUniqueIdentifier\",  \n            \"name\": \"usually a nodes name\",  \n            \"data\": {\n              \"some key\": \"some value\",\n              \"some other key\": \"some other value\"\n             },  \n            \"adjacencies\": [\"anotherUniqueIdentifier\", \"yetAnotherUniqueIdentifier\", 'etc']  \n          },\n\n          'other nodes go here...' \n        ];          \n        (end code)\n        \n        For *extended Graph structures*, the adjacencies property contains an array of Adjacency objects that have as properties\n        \n        nodeTo - (string) The other node connected by this adjacency.\n        data - (object) A data property, where we can store custom key/value information.\n        \n        Example:\n        \n        (start code js)\n        var json = [  \n          {  \n            \"id\": \"aUniqueIdentifier\",  \n            \"name\": \"usually a nodes name\",  \n            \"data\": {\n              \"some key\": \"some value\",\n              \"some other key\": \"some other value\"\n             },  \n            \"adjacencies\": [  \n            {  \n              nodeTo:\"aNodeId\",  \n              data: {} //put whatever you want here  \n            },\n            'other adjacencies go here...'  \n          },\n\n          'other nodes go here...' \n        ];          \n        (end code)\n       \n       About the data property:\n       \n       As described before, you can store custom data in the *data* property of JSON *nodes* and *adjacencies*. \n       You can use almost any string as key for the data object. Some keys though are reserved by the toolkit, and \n       have special meanings. This is the case for keys starting with a dollar sign, for example, *$width*.\n       \n       For JSON *node* objects, adding dollar prefixed properties that match the names of the options defined in \n       <Options.Node> will override the general value for that option with that particular value. For this to work \n       however, you do have to set *overridable = true* in <Options.Node>.\n       \n       The same thing is true for JSON adjacencies. Dollar prefixed data properties will alter values set in <Options.Edge> \n       if <Options.Edge> has *overridable = true*.\n       \n       When loading JSON data into TreeMaps, the *data* property must contain a value for the *$area* key, \n       since this is the value which will be taken into account when creating the layout. \n       The same thing goes for the *$color* parameter.\n       \n       In JSON Nodes you can use also *$label-* prefixed properties to refer to <Options.Label> properties. For example, \n       *$label-size* will refer to <Options.Label> size property. Also, in JSON nodes and adjacencies you can set \n       canvas specific properties individually by using the *$canvas-* prefix. For example, *$canvas-shadowBlur* will refer \n       to the *shadowBlur* property.\n       \n       These properties can also be accessed after loading the JSON data from <Graph.Nodes> and <Graph.Adjacences> \n       by using <Accessors>. For more information take a look at the <Graph> and <Accessors> documentation.\n       \n       Finally, these properties can also be used to create advanced animations like with <Options.NodeStyles>. For more \n       information about creating animations please take a look at the <Graph.Plot> and <Graph.Plot.animate> documentation.\n       \n       loadJSON Parameters:\n    \n        json - A JSON Tree or Graph structure.\n        i - For Graph structures only. Sets the indexed node as root for the visualization.\n\n    */\n    loadJSON: function(json, i) {\n      this.json = json;\n      //if they're canvas labels erase them.\n      if(this.labels && this.labels.clearLabels) {\n        this.labels.clearLabels(true);\n      }\n      this.graph = this.construct(json);\n      if($.type(json) != 'array'){\n        this.root = json.id;\n      } else {\n        this.root = json[i? i : 0].id;\n      }\n    },\n    \n    /*\n      Method: toJSON\n   \n      Returns a JSON tree/graph structure from the visualization's <Graph>. \n      See <Loader.loadJSON> for the graph formats available.\n      \n      See also:\n      \n      <Loader.loadJSON>\n      \n      Parameters:\n      \n      type - (string) Default's \"tree\". The type of the JSON structure to be returned. \n      Possible options are \"tree\" or \"graph\".\n    */    \n    toJSON: function(type) {\n      type = type || \"tree\";\n      if(type == 'tree') {\n        var ans = {};\n        var rootNode = this.graph.getNode(this.root);\n        var ans = (function recTree(node) {\n          var ans = {};\n          ans.id = node.id;\n          ans.name = node.name;\n          ans.data = node.data;\n          var ch =[];\n          node.eachSubnode(function(n) {\n            ch.push(recTree(n));\n          });\n          ans.children = ch;\n          return ans;\n        })(rootNode);\n        return ans;\n      } else {\n        var ans = [];\n        var T = !!this.graph.getNode(this.root).visited;\n        this.graph.eachNode(function(node) {\n          var ansNode = {};\n          ansNode.id = node.id;\n          ansNode.name = node.name;\n          ansNode.data = node.data;\n          var adjs = [];\n          node.eachAdjacency(function(adj) {\n            var nodeTo = adj.nodeTo;\n            if(!!nodeTo.visited === T) {\n              var ansAdj = {};\n              ansAdj.nodeTo = nodeTo.id;\n              ansAdj.data = adj.data;\n              adjs.push(ansAdj);\n            }\n          });\n          ansNode.adjacencies = adjs;\n          ans.push(ansNode);\n          node.visited = !T;\n        });\n        return ans;\n      }\n    }\n};\n\n\n\n/*\n * File: Layouts.js\n * \n * Implements base Tree and Graph layouts.\n *\n * Description:\n *\n * Implements base Tree and Graph layouts like Radial, Tree, etc.\n * \n */\n\n/*\n * Object: Layouts\n * \n * Parent object for common layouts.\n *\n */\nvar Layouts = $jit.Layouts = {};\n\n\n//Some util shared layout functions are defined here.\nvar NodeDim = {\n  label: null,\n  \n  compute: function(graph, prop, opt) {\n    this.initializeLabel(opt);\n    var label = this.label, style = label.style;\n    graph.eachNode(function(n) {\n      var autoWidth  = n.getData('autoWidth'),\n          autoHeight = n.getData('autoHeight');\n      if(autoWidth || autoHeight) {\n        //delete dimensions since these are\n        //going to be overridden now.\n        delete n.data.$width;\n        delete n.data.$height;\n        delete n.data.$dim;\n        \n        var width  = n.getData('width'),\n            height = n.getData('height');\n        //reset label dimensions\n        style.width  = autoWidth? 'auto' : width + 'px';\n        style.height = autoHeight? 'auto' : height + 'px';\n        \n        //TODO(nico) should let the user choose what to insert here.\n        label.innerHTML = n.name;\n        \n        var offsetWidth  = label.offsetWidth,\n            offsetHeight = label.offsetHeight;\n        var type = n.getData('type');\n        if($.indexOf(['circle', 'square', 'triangle', 'star'], type) === -1) {\n          n.setData('width', offsetWidth);\n          n.setData('height', offsetHeight);\n        } else {\n          var dim = offsetWidth > offsetHeight? offsetWidth : offsetHeight;\n          n.setData('width', dim);\n          n.setData('height', dim);\n          n.setData('dim', dim); \n        }\n      }\n    });\n  },\n  \n  initializeLabel: function(opt) {\n    if(!this.label) {\n      this.label = document.createElement('div');\n      document.body.appendChild(this.label);\n    }\n    this.setLabelStyles(opt);\n  },\n  \n  setLabelStyles: function(opt) {\n    $.extend(this.label.style, {\n      'visibility': 'hidden',\n      'position': 'absolute',\n      'width': 'auto',\n      'height': 'auto'\n    });\n    this.label.className = 'jit-autoadjust-label';\n  }\n};\n\n\n/*\n * Class: Layouts.Radial\n * \n * Implements a Radial Layout.\n * \n * Implemented By:\n * \n * <RGraph>, <Hypertree>\n * \n */\nLayouts.Radial = new Class({\n\n  /*\n   * Method: compute\n   * \n   * Computes nodes' positions.\n   * \n   * Parameters:\n   * \n   * property - _optional_ A <Graph.Node> position property to store the new\n   * positions. Possible values are 'pos', 'end' or 'start'.\n   * \n   */\n  compute : function(property) {\n    var prop = $.splat(property || [ 'current', 'start', 'end' ]);\n    NodeDim.compute(this.graph, prop, this.config);\n    this.graph.computeLevels(this.root, 0, \"ignore\");\n    var lengthFunc = this.createLevelDistanceFunc(); \n    this.computeAngularWidths(prop);\n    this.computePositions(prop, lengthFunc);\n  },\n\n  /*\n   * computePositions\n   * \n   * Performs the main algorithm for computing node positions.\n   */\n  computePositions : function(property, getLength) {\n    var propArray = property;\n    var graph = this.graph;\n    var root = graph.getNode(this.root);\n    var parent = this.parent;\n    var config = this.config;\n\n    for ( var i=0, l=propArray.length; i < l; i++) {\n      var pi = propArray[i];\n      root.setPos($P(0, 0), pi);\n      root.setData('span', Math.PI * 2, pi);\n    }\n\n    root.angleSpan = {\n      begin : 0,\n      end : 2 * Math.PI\n    };\n\n    graph.eachBFS(this.root, function(elem) {\n      var angleSpan = elem.angleSpan.end - elem.angleSpan.begin;\n      var angleInit = elem.angleSpan.begin;\n      var len = getLength(elem);\n      //Calculate the sum of all angular widths\n      var totalAngularWidths = 0, subnodes = [], maxDim = {};\n      elem.eachSubnode(function(sib) {\n        totalAngularWidths += sib._treeAngularWidth;\n        //get max dim\n        for ( var i=0, l=propArray.length; i < l; i++) {\n          var pi = propArray[i], dim = sib.getData('dim', pi);\n          maxDim[pi] = (pi in maxDim)? (dim > maxDim[pi]? dim : maxDim[pi]) : dim;\n        }\n        subnodes.push(sib);\n      }, \"ignore\");\n      //Maintain children order\n      //Second constraint for <http://bailando.sims.berkeley.edu/papers/infovis01.htm>\n      if (parent && parent.id == elem.id && subnodes.length > 0\n          && subnodes[0].dist) {\n        subnodes.sort(function(a, b) {\n          return (a.dist >= b.dist) - (a.dist <= b.dist);\n        });\n      }\n      //Calculate nodes positions.\n      for (var k = 0, ls=subnodes.length; k < ls; k++) {\n        var child = subnodes[k];\n        if (!child._flag) {\n          var angleProportion = child._treeAngularWidth / totalAngularWidths * angleSpan;\n          var theta = angleInit + angleProportion / 2;\n\n          for ( var i=0, l=propArray.length; i < l; i++) {\n            var pi = propArray[i];\n            child.setPos($P(theta, len), pi);\n            child.setData('span', angleProportion, pi);\n            child.setData('dim-quotient', child.getData('dim', pi) / maxDim[pi], pi);\n          }\n\n          child.angleSpan = {\n            begin : angleInit,\n            end : angleInit + angleProportion\n          };\n          angleInit += angleProportion;\n        }\n      }\n    }, \"ignore\");\n  },\n\n  /*\n   * Method: setAngularWidthForNodes\n   * \n   * Sets nodes angular widths.\n   */\n  setAngularWidthForNodes : function(prop) {\n    this.graph.eachBFS(this.root, function(elem, i) {\n      var diamValue = elem.getData('angularWidth', prop[0]) || 5;\n      elem._angularWidth = diamValue / i;\n    }, \"ignore\");\n  },\n\n  /*\n   * Method: setSubtreesAngularWidth\n   * \n   * Sets subtrees angular widths.\n   */\n  setSubtreesAngularWidth : function() {\n    var that = this;\n    this.graph.eachNode(function(elem) {\n      that.setSubtreeAngularWidth(elem);\n    }, \"ignore\");\n  },\n\n  /*\n   * Method: setSubtreeAngularWidth\n   * \n   * Sets the angular width for a subtree.\n   */\n  setSubtreeAngularWidth : function(elem) {\n    var that = this, nodeAW = elem._angularWidth, sumAW = 0;\n    elem.eachSubnode(function(child) {\n      that.setSubtreeAngularWidth(child);\n      sumAW += child._treeAngularWidth;\n    }, \"ignore\");\n    elem._treeAngularWidth = Math.max(nodeAW, sumAW);\n  },\n\n  /*\n   * Method: computeAngularWidths\n   * \n   * Computes nodes and subtrees angular widths.\n   */\n  computeAngularWidths : function(prop) {\n    this.setAngularWidthForNodes(prop);\n    this.setSubtreesAngularWidth();\n  }\n\n});\n\n\n/*\n * File: RGraph.js\n *\n */\n\n/*\n   Class: RGraph\n   \n   A radial graph visualization with advanced animations.\n   \n   Inspired by:\n \n   Animated Exploration of Dynamic Graphs with Radial Layout (Ka-Ping Yee, Danyel Fisher, Rachna Dhamija, Marti Hearst) <http://bailando.sims.berkeley.edu/papers/infovis01.htm>\n   \n   Note:\n   \n   This visualization was built and engineered from scratch, taking only the paper as inspiration, and only shares some features with the visualization described in the paper.\n   \n  Implements:\n  \n  All <Loader> methods\n  \n   Constructor Options:\n   \n   Inherits options from\n   \n   - <Options.Canvas>\n   - <Options.Controller>\n   - <Options.Node>\n   - <Options.Edge>\n   - <Options.Label>\n   - <Options.Events>\n   - <Options.Tips>\n   - <Options.NodeStyles>\n   - <Options.Navigation>\n   \n   Additionally, there are other parameters and some default values changed\n   \n   interpolation - (string) Default's *linear*. Describes the way nodes are interpolated. Possible values are 'linear' and 'polar'.\n   levelDistance - (number) Default's *100*. The distance between levels of the tree. \n     \n   Instance Properties:\n\n   canvas - Access a <Canvas> instance.\n   graph - Access a <Graph> instance.\n   op - Access a <RGraph.Op> instance.\n   fx - Access a <RGraph.Plot> instance.\n   labels - Access a <RGraph.Label> interface implementation.   \n*/\n\n$jit.RGraph = new Class( {\n\n  Implements: [\n      Loader, Extras, Layouts.Radial\n  ],\n\n  initialize: function(controller){\n    var $RGraph = $jit.RGraph;\n\n    var config = {\n      interpolation: 'linear',\n      levelDistance: 100\n    };\n\n    this.controller = this.config = $.merge(Options(\"Canvas\", \"Node\", \"Edge\",\n        \"Fx\", \"Controller\", \"Tips\", \"NodeStyles\", \"Events\", \"Navigation\", \"Label\"), config, controller);\n\n    var canvasConfig = this.config;\n    if(canvasConfig.useCanvas) {\n      this.canvas = canvasConfig.useCanvas;\n      this.config.labelContainer = this.canvas.id + '-label';\n    } else {\n      if(canvasConfig.background) {\n        canvasConfig.background = $.merge({\n          type: 'Circles'\n        }, canvasConfig.background);\n      }\n      this.canvas = new Canvas(this, canvasConfig);\n      this.config.labelContainer = (typeof canvasConfig.injectInto == 'string'? canvasConfig.injectInto : canvasConfig.injectInto.id) + '-label';\n    }\n\n    this.graphOptions = {\n      'klass': Polar,\n      'Node': {\n        'selected': false,\n        'exist': true,\n        'drawn': true\n      }\n    };\n    this.graph = new Graph(this.graphOptions, this.config.Node,\n        this.config.Edge);\n    this.labels = new $RGraph.Label[canvasConfig.Label.type](this);\n    this.fx = new $RGraph.Plot(this, $RGraph);\n    this.op = new $RGraph.Op(this);\n    this.json = null;\n    this.root = null;\n    this.busy = false;\n    this.parent = false;\n    // initialize extras\n    this.initializeExtras();\n  },\n\n  /* \n  \n    createLevelDistanceFunc \n  \n    Returns the levelDistance function used for calculating a node distance \n    to its origin. This function returns a function that is computed \n    per level and not per node, such that all nodes with the same depth will have the \n    same distance to the origin. The resulting function gets the \n    parent node as parameter and returns a float.\n\n   */\n  createLevelDistanceFunc: function(){\n    var ld = this.config.levelDistance;\n    return function(elem){\n      return (elem._depth + 1) * ld;\n    };\n  },\n\n  /* \n     Method: refresh \n     \n     Computes positions and plots the tree.\n\n   */\n  refresh: function(){\n    \n    // START METAMAPS CODE\n    // this.compute();\n    // END METAMAPS CODE\n    // ORIGINAL CODE: this.compute();\n    this.plot();\n  },\n\n  reposition: function(){\n    this.compute('end');\n  },\n\n  /*\n   Method: plot\n  \n   Plots the RGraph. This is a shortcut to *fx.plot*.\n  */\n  plot: function(){\n    this.fx.plot();\n  },\n  /*\n   getNodeAndParentAngle\n  \n   Returns the _parent_ of the given node, also calculating its angle span.\n  */\n  getNodeAndParentAngle: function(id){\n    var theta = false;\n    var n = this.graph.getNode(id);\n    var ps = n.getParents();\n    var p = (ps.length > 0)? ps[0] : false;\n    if (p) {\n      var posParent = p.pos.getc(), posChild = n.pos.getc();\n      var newPos = posParent.add(posChild.scale(-1));\n      theta = Math.atan2(newPos.y, newPos.x);\n      if (theta < 0)\n        theta += 2 * Math.PI;\n    }\n    return {\n      parent: p,\n      theta: theta\n    };\n  },\n  /*\n   tagChildren\n  \n   Enumerates the children in order to maintain child ordering (second constraint of the paper).\n  */\n  tagChildren: function(par, id){\n    if (par.angleSpan) {\n      var adjs = [];\n      par.eachAdjacency(function(elem){\n        adjs.push(elem.nodeTo);\n      }, \"ignore\");\n      var len = adjs.length;\n      for ( var i = 0; i < len && id != adjs[i].id; i++)\n        ;\n      for ( var j = (i + 1) % len, k = 0; id != adjs[j].id; j = (j + 1) % len) {\n        adjs[j].dist = k++;\n      }\n    }\n  },\n  /* \n  Method: onClick \n  \n  Animates the <RGraph> to center the node specified by *id*.\n\n   Parameters:\n\n   id - A <Graph.Node> id.\n   opt - (optional|object) An object containing some extra properties described below\n   hideLabels - (boolean) Default's *true*. Hide labels when performing the animation.\n\n   Example:\n\n   (start code js)\n     rgraph.onClick('someid');\n     //or also...\n     rgraph.onClick('someid', {\n      hideLabels: false\n     });\n    (end code)\n    \n  */\n  onClick: function(id, opt){\n    if (this.root != id && !this.busy) {\n      this.busy = true;\n      this.root = id;\n      var that = this;\n      this.controller.onBeforeCompute(this.graph.getNode(id));\n      var obj = this.getNodeAndParentAngle(id);\n\n      // second constraint\n      this.tagChildren(obj.parent, id);\n      this.parent = obj.parent;\n      this.compute('end');\n\n      // first constraint\n      var thetaDiff = obj.theta - obj.parent.endPos.theta;\n      this.graph.eachNode(function(elem){\n        elem.endPos.set(elem.endPos.getp().add($P(thetaDiff, 0)));\n      });\n\n      var mode = this.config.interpolation;\n      opt = $.merge( {\n        onComplete: $.empty\n      }, opt || {});\n\n      this.fx.animate($.merge( {\n        hideLabels: true,\n        modes: [\n          mode\n        ]\n      }, opt, {\n        onComplete: function(){\n          that.busy = false;\n          opt.onComplete();\n        }\n      }));\n    }\n  }\n});\n\n$jit.RGraph.$extend = true;\n\n(function(RGraph){\n\n  /*\n     Class: RGraph.Op\n     \n     Custom extension of <Graph.Op>.\n\n     Extends:\n\n     All <Graph.Op> methods\n     \n     See also:\n     \n     <Graph.Op>\n\n  */\n  RGraph.Op = new Class( {\n\n    Implements: Graph.Op\n\n  });\n\n  /*\n     Class: RGraph.Plot\n    \n    Custom extension of <Graph.Plot>.\n  \n    Extends:\n  \n    All <Graph.Plot> methods\n    \n    See also:\n    \n    <Graph.Plot>\n  \n  */\n  RGraph.Plot = new Class( {\n\n    Implements: Graph.Plot\n\n  });\n\n  /*\n    Object: RGraph.Label\n\n    Custom extension of <Graph.Label>. \n    Contains custom <Graph.Label.SVG>, <Graph.Label.HTML> and <Graph.Label.Native> extensions.\n  \n    Extends:\n  \n    All <Graph.Label> methods and subclasses.\n  \n    See also:\n  \n    <Graph.Label>, <Graph.Label.Native>, <Graph.Label.HTML>, <Graph.Label.SVG>.\n  \n   */\n  RGraph.Label = {};\n\n  /*\n     RGraph.Label.Native\n\n     Custom extension of <Graph.Label.Native>.\n\n     Extends:\n\n     All <Graph.Label.Native> methods\n\n     See also:\n\n     <Graph.Label.Native>\n\n  */\n  RGraph.Label.Native = new Class( {\n    Implements: Graph.Label.Native\n  });\n\n  /*\n     RGraph.Label.SVG\n    \n    Custom extension of <Graph.Label.SVG>.\n  \n    Extends:\n  \n    All <Graph.Label.SVG> methods\n  \n    See also:\n  \n    <Graph.Label.SVG>\n  \n  */\n  RGraph.Label.SVG = new Class( {\n    Implements: Graph.Label.SVG,\n\n    initialize: function(viz){\n      this.viz = viz;\n    },\n\n    /* \n       placeLabel\n\n       Overrides abstract method placeLabel in <Graph.Plot>.\n\n       Parameters:\n\n       tag - A DOM label element.\n       node - A <Graph.Node>.\n       controller - A configuration/controller object passed to the visualization.\n      \n     */\n    placeLabel: function(tag, node, controller){\n      var pos = node.pos.getc(true), \n          canvas = this.viz.canvas,\n          ox = canvas.translateOffsetX,\n          oy = canvas.translateOffsetY,\n          sx = canvas.scaleOffsetX,\n          sy = canvas.scaleOffsetY,\n          radius = canvas.getSize();\n      var labelPos = {\n        x: Math.round(pos.x * sx + ox + radius.width / 2),\n        y: Math.round(pos.y * sy + oy + radius.height / 2)\n      };\n      tag.setAttribute('x', labelPos.x);\n      tag.setAttribute('y', labelPos.y);\n\n      controller.onPlaceLabel(tag, node);\n    }\n  });\n\n  /*\n     RGraph.Label.HTML\n\n     Custom extension of <Graph.Label.HTML>.\n\n     Extends:\n\n     All <Graph.Label.HTML> methods.\n\n     See also:\n\n     <Graph.Label.HTML>\n\n  */\n  RGraph.Label.HTML = new Class( {\n    Implements: Graph.Label.HTML,\n\n    initialize: function(viz){\n      this.viz = viz;\n    },\n    /* \n       placeLabel\n\n       Overrides abstract method placeLabel in <Graph.Plot>.\n\n       Parameters:\n\n       tag - A DOM label element.\n       node - A <Graph.Node>.\n       controller - A configuration/controller object passed to the visualization.\n      \n     */\n    placeLabel: function(tag, node, controller){\n      var pos = node.pos.getc(true), \n          canvas = this.viz.canvas,\n          ox = canvas.translateOffsetX,\n          oy = canvas.translateOffsetY,\n          sx = canvas.scaleOffsetX,\n          sy = canvas.scaleOffsetY,\n          radius = canvas.getSize();\n      var labelPos = {\n        x: Math.round(pos.x * sx + ox + radius.width / 2),\n        y: Math.round(pos.y * sy + oy + radius.height / 2)\n      };\n\n      var style = tag.style;\n      style.left = labelPos.x + 'px';\n      style.top = labelPos.y + 'px';\n      style.display = this.fitsInCanvas(labelPos, canvas)? '' : 'none';\n\n      controller.onPlaceLabel(tag, node);\n    }\n  });\n\n  /*\n    Class: RGraph.Plot.NodeTypes\n\n    This class contains a list of <Graph.Node> built-in types. \n    Node types implemented are 'none', 'circle', 'triangle', 'rectangle', 'star', 'ellipse' and 'square'.\n\n    You can add your custom node types, customizing your visualization to the extreme.\n\n    Example:\n\n    (start code js)\n      RGraph.Plot.NodeTypes.implement({\n        'mySpecialType': {\n          'render': function(node, canvas) {\n            //print your custom node to canvas\n          },\n          //optional\n          'contains': function(node, pos) {\n            //return true if pos is inside the node or false otherwise\n          }\n        }\n      });\n    (end code)\n\n  */\n  RGraph.Plot.NodeTypes = new Class({\n    'none': {\n      'render': $.empty,\n      'contains': $.lambda(false)\n    },\n    'circle': {\n      'render': function(node, canvas){\n        var pos = node.pos.getc(true), \n            dim = node.getData('dim');\n        this.nodeHelper.circle.render('fill', pos, dim, canvas);\n      },\n      'contains': function(node, pos){\n        var npos = node.pos.getc(true), \n            dim = node.getData('dim');\n        return this.nodeHelper.circle.contains(npos, pos, dim);\n      }\n    },\n    'ellipse': {\n      'render': function(node, canvas){\n        var pos = node.pos.getc(true), \n            width = node.getData('width'), \n            height = node.getData('height');\n        this.nodeHelper.ellipse.render('fill', pos, width, height, canvas);\n        },\n      'contains': function(node, pos){\n        var npos = node.pos.getc(true), \n            width = node.getData('width'), \n            height = node.getData('height');\n        return this.nodeHelper.ellipse.contains(npos, pos, width, height);\n      }\n    },\n    'square': {\n      'render': function(node, canvas){\n        var pos = node.pos.getc(true), \n            dim = node.getData('dim');\n        this.nodeHelper.square.render('fill', pos, dim, canvas);\n      },\n      'contains': function(node, pos){\n        var npos = node.pos.getc(true), \n            dim = node.getData('dim');\n        return this.nodeHelper.square.contains(npos, pos, dim);\n      }\n    },\n    'rectangle': {\n      'render': function(node, canvas){\n        var pos = node.pos.getc(true), \n            width = node.getData('width'), \n            height = node.getData('height');\n        this.nodeHelper.rectangle.render('fill', pos, width, height, canvas);\n      },\n      'contains': function(node, pos){\n        var npos = node.pos.getc(true), \n            width = node.getData('width'), \n            height = node.getData('height');\n        return this.nodeHelper.rectangle.contains(npos, pos, width, height);\n      }\n    },\n    'triangle': {\n      'render': function(node, canvas){\n        var pos = node.pos.getc(true), \n            dim = node.getData('dim');\n        this.nodeHelper.triangle.render('fill', pos, dim, canvas);\n      },\n      'contains': function(node, pos) {\n        var npos = node.pos.getc(true), \n            dim = node.getData('dim');\n        return this.nodeHelper.triangle.contains(npos, pos, dim);\n      }\n    },\n    'star': {\n      'render': function(node, canvas){\n        var pos = node.pos.getc(true),\n            dim = node.getData('dim');\n        this.nodeHelper.star.render('fill', pos, dim, canvas);\n      },\n      'contains': function(node, pos) {\n        var npos = node.pos.getc(true),\n            dim = node.getData('dim');\n        return this.nodeHelper.star.contains(npos, pos, dim);\n      }\n    }\n  });\n\n  /*\n    Class: RGraph.Plot.EdgeTypes\n\n    This class contains a list of <Graph.Adjacence> built-in types. \n    Edge types implemented are 'none', 'line' and 'arrow'.\n  \n    You can add your custom edge types, customizing your visualization to the extreme.\n  \n    Example:\n  \n    (start code js)\n      RGraph.Plot.EdgeTypes.implement({\n        'mySpecialType': {\n          'render': function(adj, canvas) {\n            //print your custom edge to canvas\n          },\n          //optional\n          'contains': function(adj, pos) {\n            //return true if pos is inside the arc or false otherwise\n          }\n        }\n      });\n    (end code)\n  \n  */\n  RGraph.Plot.EdgeTypes = new Class({\n    'none': $.empty,\n    'line': {\n      'render': function(adj, canvas) {\n        var from = adj.nodeFrom.pos.getc(true),\n            to = adj.nodeTo.pos.getc(true);\n        this.edgeHelper.line.render(from, to, canvas);\n      },\n      'contains': function(adj, pos) {\n        var from = adj.nodeFrom.pos.getc(true),\n            to = adj.nodeTo.pos.getc(true);\n        return this.edgeHelper.line.contains(from, to, pos, this.edge.epsilon);\n      }\n    },\n    'arrow': {\n      'render': function(adj, canvas) {\n        var from = adj.nodeFrom.pos.getc(true),\n            to = adj.nodeTo.pos.getc(true),\n            dim = adj.getData('dim'),\n            direction = adj.data.$direction,\n            inv = (direction && direction.length>1 && direction[0] != adj.nodeFrom.id);\n        this.edgeHelper.arrow.render(from, to, dim, inv, canvas);\n      },\n      'contains': function(adj, pos) {\n        var from = adj.nodeFrom.pos.getc(true),\n            to = adj.nodeTo.pos.getc(true);\n        return this.edgeHelper.arrow.contains(from, to, pos, this.edge.epsilon);\n      }\n    }\n  });\n\n})($jit.RGraph);\n\n\n/*\n * File: Layouts.ForceDirected.js\n *\n*/\n\n/*\n * Class: Layouts.ForceDirected\n * \n * Implements a Force Directed Layout.\n * \n * Implemented By:\n * \n * <ForceDirected>\n * \n * Credits:\n * \n * Marcus Cobden <http://marcuscobden.co.uk>\n * \n */\nLayouts.ForceDirected = new Class({\n\n  getOptions: function(random) {\n    var s = this.canvas.getSize();\n    var w = s.width, h = s.height;\n    //count nodes\n    var count = 0;\n    this.graph.eachNode(function(n) { \n      count++;\n    });\n    var k2 = w * h / count, k = Math.sqrt(k2);\n    var l = this.config.levelDistance;\n    \n    return {\n      width: w,\n      height: h,\n      tstart: w * 0.1,\n      nodef: function(x) { return k2 / (x || 1); },\n      edgef: function(x) { return /* x * x / k; */ k * (x - l); }\n    };\n  },\n  \n  compute: function(property, incremental) {\n    var prop = $.splat(property || ['current', 'start', 'end']);\n    var opt = this.getOptions();\n    NodeDim.compute(this.graph, prop, this.config);\n    this.graph.computeLevels(this.root, 0, \"ignore\");\n    this.graph.eachNode(function(n) {\n      $.each(prop, function(p) {\n        var pos = n.getPos(p);\n        if(pos.equals(Complex.KER)) {\n          pos.x = opt.width/5 * (Math.random() - 0.5);\n          pos.y = opt.height/5 * (Math.random() - 0.5);\n        }\n        //initialize disp vector\n        n.disp = {};\n        $.each(prop, function(p) {\n          n.disp[p] = $C(0, 0);\n        });\n      });\n    });\n    this.computePositions(prop, opt, incremental);\n  },\n  \n  computePositions: function(property, opt, incremental) {\n    var times = this.config.iterations, i = 0, that = this;\n    if(incremental) {\n      (function iter() {\n        for(var total=incremental.iter, j=0; j<total; j++) {\n          opt.t = opt.tstart;\n          if(times) opt.t *= (1 - i++/(times -1));\n          that.computePositionStep(property, opt);\n          if(times && i >= times) {\n            incremental.onComplete();\n            return;\n          }\n        }\n        incremental.onStep(Math.round(i / (times -1) * 100));\n        setTimeout(iter, 1);\n      })();\n    } else {\n      for(; i < times; i++) {\n        opt.t = opt.tstart * (1 - i/(times -1));\n        this.computePositionStep(property, opt);\n      }\n    }\n  },\n  \n  computePositionStep: function(property, opt) {\n    var graph = this.graph;\n    var min = Math.min, max = Math.max;\n    var dpos = $C(0, 0);\n    //calculate repulsive forces\n    graph.eachNode(function(v) {\n      //initialize disp\n      $.each(property, function(p) {\n        v.disp[p].x = 0; v.disp[p].y = 0;\n      });\n      graph.eachNode(function(u) {\n        if(u.id != v.id) {\n          $.each(property, function(p) {\n            var vp = v.getPos(p), up = u.getPos(p);\n            dpos.x = vp.x - up.x;\n            dpos.y = vp.y - up.y;\n            var norm = dpos.norm() || 1;\n            v.disp[p].$add(dpos\n                .$scale(opt.nodef(norm) / norm));\n          });\n        }\n      });\n    });\n    //calculate attractive forces\n    var T = !!graph.getNode(this.root).visited;\n    graph.eachNode(function(node) {\n      node.eachAdjacency(function(adj) {\n        var nodeTo = adj.nodeTo;\n        if(!!nodeTo.visited === T) {\n          $.each(property, function(p) {\n            var vp = node.getPos(p), up = nodeTo.getPos(p);\n            dpos.x = vp.x - up.x;\n            dpos.y = vp.y - up.y;\n            var norm = dpos.norm() || 1;\n            node.disp[p].$add(dpos.$scale(-opt.edgef(norm) / norm));\n            nodeTo.disp[p].$add(dpos.$scale(-1));\n          });\n        }\n      });\n      node.visited = !T;\n    });\n    //arrange positions to fit the canvas\n    var t = opt.t, w2 = opt.width / 2, h2 = opt.height / 2;\n    graph.eachNode(function(u) {\n      $.each(property, function(p) {\n        var disp = u.disp[p];\n        var norm = disp.norm() || 1;\n        var p = u.getPos(p);\n        p.$add($C(disp.x * min(Math.abs(disp.x), t) / norm, \n            disp.y * min(Math.abs(disp.y), t) / norm));\n        p.x = min(w2, max(-w2, p.x));\n        p.y = min(h2, max(-h2, p.y));\n      });\n    });\n  }\n});\n\n/*\n * File: ForceDirected.js\n */\n\n/*\n   Class: ForceDirected\n      \n   A visualization that lays graphs using a Force-Directed layout algorithm.\n   \n   Inspired by:\n  \n   Force-Directed Drawing Algorithms (Stephen G. Kobourov) <http://www.cs.brown.edu/~rt/gdhandbook/chapters/force-directed.pdf>\n   \n  Implements:\n  \n  All <Loader> methods\n  \n   Constructor Options:\n   \n   Inherits options from\n   \n   - <Options.Canvas>\n   - <Options.Controller>\n   - <Options.Node>\n   - <Options.Edge>\n   - <Options.Label>\n   - <Options.Events>\n   - <Options.Tips>\n   - <Options.NodeStyles>\n   - <Options.Navigation>\n   \n   Additionally, there are two parameters\n   \n   levelDistance - (number) Default's *50*. The natural length desired for the edges.\n   iterations - (number) Default's *50*. The number of iterations for the spring layout simulation. Depending on the browser's speed you could set this to a more 'interesting' number, like *200*. \n     \n   Instance Properties:\n\n   canvas - Access a <Canvas> instance.\n   graph - Access a <Graph> instance.\n   op - Access a <ForceDirected.Op> instance.\n   fx - Access a <ForceDirected.Plot> instance.\n   labels - Access a <ForceDirected.Label> interface implementation.\n\n*/\n\n$jit.ForceDirected = new Class( {\n\n  Implements: [ Loader, Extras, Layouts.ForceDirected ],\n\n  initialize: function(controller) {\n    var $ForceDirected = $jit.ForceDirected;\n\n    var config = {\n      iterations: 50,\n      levelDistance: 50\n    };\n\n    this.controller = this.config = $.merge(Options(\"Canvas\", \"Node\", \"Edge\",\n        \"Fx\", \"Tips\", \"NodeStyles\", \"Events\", \"Navigation\", \"Controller\", \"Label\"), config, controller);\n\n    var canvasConfig = this.config;\n    if(canvasConfig.useCanvas) {\n      this.canvas = canvasConfig.useCanvas;\n      this.config.labelContainer = this.canvas.id + '-label';\n    } else {\n      if(canvasConfig.background) {\n        canvasConfig.background = $.merge({\n          type: 'Circles'\n        }, canvasConfig.background);\n      }\n      this.canvas = new Canvas(this, canvasConfig);\n      this.config.labelContainer = (typeof canvasConfig.injectInto == 'string'? canvasConfig.injectInto : canvasConfig.injectInto.id) + '-label';\n    }\n\n    this.graphOptions = {\n      'klass': Complex,\n      'Node': {\n        'selected': false,\n        'exist': true,\n        'drawn': true\n      }\n    };\n    this.graph = new Graph(this.graphOptions, this.config.Node,\n        this.config.Edge);\n    this.labels = new $ForceDirected.Label[canvasConfig.Label.type](this);\n    this.fx = new $ForceDirected.Plot(this, $ForceDirected);\n    this.op = new $ForceDirected.Op(this);\n    this.json = null;\n    this.busy = false;\n    // initialize extras\n    this.initializeExtras();\n  },\n\n  /* \n    Method: refresh \n    \n    Computes positions and plots the tree.\n  */\n  refresh: function() {\n    // START METAMAPS CODE\n    // this.compute();\n    // END METAMAPS CODE\n    // ORIGINAL CODE: this.compute();\n    this.plot();\n  },\n\n  reposition: function() {\n    this.compute('end');\n  },\n\n/*\n  Method: computeIncremental\n  \n  Performs the Force Directed algorithm incrementally.\n  \n  Description:\n  \n  ForceDirected algorithms can perform many computations and lead to JavaScript taking too much time to complete. \n  This method splits the algorithm into smaller parts allowing the user to track the evolution of the algorithm and \n  avoiding browser messages such as \"This script is taking too long to complete\".\n  \n  Parameters:\n  \n  opt - (object) The object properties are described below\n  \n  iter - (number) Default's *20*. Split the algorithm into pieces of _iter_ iterations. For example, if the _iterations_ configuration property \n  of your <ForceDirected> class is 100, then you could set _iter_ to 20 to split the main algorithm into 5 smaller pieces.\n  \n  property - (string) Default's *end*. Whether to update starting, current or ending node positions. Possible values are 'end', 'start', 'current'. \n  You can also set an array of these properties. If you'd like to keep the current node positions but to perform these \n  computations for final animation positions then you can just choose 'end'.\n  \n  onStep - (function) A callback function called when each \"small part\" of the algorithm completed. This function gets as first formal \n  parameter a percentage value.\n  \n  onComplete - A callback function called when the algorithm completed.\n  \n  Example:\n  \n  In this example I calculate the end positions and then animate the graph to those positions\n  \n  (start code js)\n  var fd = new $jit.ForceDirected(...);\n  fd.computeIncremental({\n    iter: 20,\n    property: 'end',\n    onStep: function(perc) {\n      Log.write(\"loading \" + perc + \"%\");\n    },\n    onComplete: function() {\n      Log.write(\"done\");\n      fd.animate();\n    }\n  });\n  (end code)\n  \n  In this example I calculate all positions and (re)plot the graph\n  \n  (start code js)\n  var fd = new ForceDirected(...);\n  fd.computeIncremental({\n    iter: 20,\n    property: ['end', 'start', 'current'],\n    onStep: function(perc) {\n      Log.write(\"loading \" + perc + \"%\");\n    },\n    onComplete: function() {\n      Log.write(\"done\");\n      fd.plot();\n    }\n  });\n  (end code)\n  \n  */\n  computeIncremental: function(opt) {\n    opt = $.merge( {\n      iter: 20,\n      property: 'end',\n      onStep: $.empty,\n      onComplete: $.empty\n    }, opt || {});\n\n    this.config.onBeforeCompute(this.graph.getNode(this.root));\n    this.compute(opt.property, opt);\n  },\n\n  /*\n    Method: plot\n   \n    Plots the ForceDirected graph. This is a shortcut to *fx.plot*.\n   */\n  plot: function() {\n    this.fx.plot();\n  },\n\n  /*\n     Method: animate\n    \n     Animates the graph from the current positions to the 'end' node positions.\n  */\n  animate: function(opt) {\n    this.fx.animate($.merge( {\n      modes: [ 'linear' ]\n    }, opt || {}));\n  }\n});\n\n$jit.ForceDirected.$extend = true;\n\n(function(ForceDirected) {\n\n  /*\n     Class: ForceDirected.Op\n     \n     Custom extension of <Graph.Op>.\n\n     Extends:\n\n     All <Graph.Op> methods\n     \n     See also:\n     \n     <Graph.Op>\n\n  */\n  ForceDirected.Op = new Class( {\n\n    Implements: Graph.Op\n\n  });\n\n  /*\n    Class: ForceDirected.Plot\n    \n    Custom extension of <Graph.Plot>.\n  \n    Extends:\n  \n    All <Graph.Plot> methods\n    \n    See also:\n    \n    <Graph.Plot>\n  \n  */\n  ForceDirected.Plot = new Class( {\n\n    Implements: Graph.Plot\n\n  });\n\n  /*\n    Class: ForceDirected.Label\n    \n    Custom extension of <Graph.Label>. \n    Contains custom <Graph.Label.SVG>, <Graph.Label.HTML> and <Graph.Label.Native> extensions.\n  \n    Extends:\n  \n    All <Graph.Label> methods and subclasses.\n  \n    See also:\n  \n    <Graph.Label>, <Graph.Label.Native>, <Graph.Label.HTML>, <Graph.Label.SVG>.\n  \n  */\n  ForceDirected.Label = {};\n\n  /*\n     ForceDirected.Label.Native\n     \n     Custom extension of <Graph.Label.Native>.\n\n     Extends:\n\n     All <Graph.Label.Native> methods\n\n     See also:\n\n     <Graph.Label.Native>\n\n  */\n  ForceDirected.Label.Native = new Class( {\n    Implements: Graph.Label.Native\n  });\n\n  /*\n    ForceDirected.Label.SVG\n    \n    Custom extension of <Graph.Label.SVG>.\n  \n    Extends:\n  \n    All <Graph.Label.SVG> methods\n  \n    See also:\n  \n    <Graph.Label.SVG>\n  \n  */\n  ForceDirected.Label.SVG = new Class( {\n    Implements: Graph.Label.SVG,\n\n    initialize: function(viz) {\n      this.viz = viz;\n    },\n\n    /* \n       placeLabel\n\n       Overrides abstract method placeLabel in <Graph.Label>.\n\n       Parameters:\n\n       tag - A DOM label element.\n       node - A <Graph.Node>.\n       controller - A configuration/controller object passed to the visualization.\n      \n     */\n    placeLabel: function(tag, node, controller) {\n      var pos = node.pos.getc(true), \n          canvas = this.viz.canvas,\n          ox = canvas.translateOffsetX,\n          oy = canvas.translateOffsetY,\n          sx = canvas.scaleOffsetX,\n          sy = canvas.scaleOffsetY,\n          radius = canvas.getSize();\n      var labelPos = {\n        x: Math.round(pos.x * sx + ox + radius.width / 2),\n        y: Math.round(pos.y * sy + oy + radius.height / 2)\n      };\n      tag.setAttribute('x', labelPos.x);\n      tag.setAttribute('y', labelPos.y);\n\n      controller.onPlaceLabel(tag, node);\n    }\n  });\n\n  /*\n     ForceDirected.Label.HTML\n     \n     Custom extension of <Graph.Label.HTML>.\n\n     Extends:\n\n     All <Graph.Label.HTML> methods.\n\n     See also:\n\n     <Graph.Label.HTML>\n\n  */\n  ForceDirected.Label.HTML = new Class( {\n    Implements: Graph.Label.HTML,\n\n    initialize: function(viz) {\n      this.viz = viz;\n    },\n    /* \n       placeLabel\n\n       Overrides abstract method placeLabel in <Graph.Plot>.\n\n       Parameters:\n\n       tag - A DOM label element.\n       node - A <Graph.Node>.\n       controller - A configuration/controller object passed to the visualization.\n      \n     */\n    placeLabel: function(tag, node, controller) {\n      var pos = node.pos.getc(true), \n          canvas = this.viz.canvas,\n          ox = canvas.translateOffsetX,\n          oy = canvas.translateOffsetY,\n          sx = canvas.scaleOffsetX,\n          sy = canvas.scaleOffsetY,\n          radius = canvas.getSize();\n      var labelPos = {\n        x: Math.round(pos.x * sx + ox + radius.width / 2),\n        y: Math.round(pos.y * sy + oy + radius.height / 2)\n      };\n      var style = tag.style;\n      style.left = labelPos.x + 'px';\n      style.top = labelPos.y + 'px';\n      style.display = this.fitsInCanvas(labelPos, canvas) ? '' : 'none';\n\n      controller.onPlaceLabel(tag, node);\n    }\n  });\n\n  /*\n    Class: ForceDirected.Plot.NodeTypes\n\n    This class contains a list of <Graph.Node> built-in types. \n    Node types implemented are 'none', 'circle', 'triangle', 'rectangle', 'star', 'ellipse' and 'square'.\n\n    You can add your custom node types, customizing your visualization to the extreme.\n\n    Example:\n\n    (start code js)\n      ForceDirected.Plot.NodeTypes.implement({\n        'mySpecialType': {\n          'render': function(node, canvas) {\n            //print your custom node to canvas\n          },\n          //optional\n          'contains': function(node, pos) {\n            //return true if pos is inside the node or false otherwise\n          }\n        }\n      });\n    (end code)\n\n  */\n  ForceDirected.Plot.NodeTypes = new Class({\n    'none': {\n      'render': $.empty,\n      'contains': $.lambda(false)\n    },\n    'circle': {\n      'render': function(node, canvas){\n        var pos = node.pos.getc(true), \n            dim = node.getData('dim');\n        this.nodeHelper.circle.render('fill', pos, dim, canvas);\n      },\n      'contains': function(node, pos){\n        var npos = node.pos.getc(true), \n            dim = node.getData('dim');\n        return this.nodeHelper.circle.contains(npos, pos, dim);\n      }\n    },\n    'ellipse': {\n      'render': function(node, canvas){\n        var pos = node.pos.getc(true), \n            width = node.getData('width'), \n            height = node.getData('height');\n        this.nodeHelper.ellipse.render('fill', pos, width, height, canvas);\n        },\n      'contains': function(node, pos){\n        var npos = node.pos.getc(true), \n            width = node.getData('width'), \n            height = node.getData('height');\n        return this.nodeHelper.ellipse.contains(npos, pos, width, height);\n      }\n    },\n    'square': {\n      'render': function(node, canvas){\n        var pos = node.pos.getc(true), \n            dim = node.getData('dim');\n        this.nodeHelper.square.render('fill', pos, dim, canvas);\n      },\n      'contains': function(node, pos){\n        var npos = node.pos.getc(true), \n            dim = node.getData('dim');\n        return this.nodeHelper.square.contains(npos, pos, dim);\n      }\n    },\n    'rectangle': {\n      'render': function(node, canvas){\n        var pos = node.pos.getc(true), \n            width = node.getData('width'), \n            height = node.getData('height');\n        this.nodeHelper.rectangle.render('fill', pos, width, height, canvas);\n      },\n      'contains': function(node, pos){\n        var npos = node.pos.getc(true), \n            width = node.getData('width'), \n            height = node.getData('height');\n        return this.nodeHelper.rectangle.contains(npos, pos, width, height);\n      }\n    },\n    'triangle': {\n      'render': function(node, canvas){\n        var pos = node.pos.getc(true), \n            dim = node.getData('dim');\n        this.nodeHelper.triangle.render('fill', pos, dim, canvas);\n      },\n      'contains': function(node, pos) {\n        var npos = node.pos.getc(true), \n            dim = node.getData('dim');\n        return this.nodeHelper.triangle.contains(npos, pos, dim);\n      }\n    },\n    'star': {\n      'render': function(node, canvas){\n        var pos = node.pos.getc(true),\n            dim = node.getData('dim');\n        this.nodeHelper.star.render('fill', pos, dim, canvas);\n      },\n      'contains': function(node, pos) {\n        var npos = node.pos.getc(true),\n            dim = node.getData('dim');\n        return this.nodeHelper.star.contains(npos, pos, dim);\n      }\n    }\n  });\n\n  /*\n    Class: ForceDirected.Plot.EdgeTypes\n  \n    This class contains a list of <Graph.Adjacence> built-in types. \n    Edge types implemented are 'none', 'line' and 'arrow'.\n  \n    You can add your custom edge types, customizing your visualization to the extreme.\n  \n    Example:\n  \n    (start code js)\n      ForceDirected.Plot.EdgeTypes.implement({\n        'mySpecialType': {\n          'render': function(adj, canvas) {\n            //print your custom edge to canvas\n          },\n          //optional\n          'contains': function(adj, pos) {\n            //return true if pos is inside the arc or false otherwise\n          }\n        }\n      });\n    (end code)\n  \n  */\n  ForceDirected.Plot.EdgeTypes = new Class({\n    'none': $.empty,\n    'line': {\n      'render': function(adj, canvas) {\n        var from = adj.nodeFrom.pos.getc(true),\n            to = adj.nodeTo.pos.getc(true);\n        this.edgeHelper.line.render(from, to, canvas);\n      },\n      'contains': function(adj, pos) {\n        var from = adj.nodeFrom.pos.getc(true),\n            to = adj.nodeTo.pos.getc(true);\n        return this.edgeHelper.line.contains(from, to, pos, this.edge.epsilon);\n      }\n    },\n    'arrow': {\n      'render': function(adj, canvas) {\n        var from = adj.nodeFrom.pos.getc(true),\n            to = adj.nodeTo.pos.getc(true),\n            dim = adj.getData('dim'),\n            direction = adj.data.$direction,\n            inv = (direction && direction.length>1 && direction[0] != adj.nodeFrom.id);\n        this.edgeHelper.arrow.render(from, to, dim, inv, canvas);\n      },\n      'contains': function(adj, pos) {\n        var from = adj.nodeFrom.pos.getc(true),\n            to = adj.nodeTo.pos.getc(true);\n        return this.edgeHelper.arrow.contains(from, to, pos, this.edge.epsilon);\n      }\n    }\n  });\n\n})($jit.ForceDirected);\n\n\n/*\n * Vector3 class based on three.js http://github.com/mrdoob/three.js, Copyright (c) Mr.doob http://mrdoob.com/, MIT License http://github.com/mrdoob/three.js/blob/master/LICENSE \n */\n\nvar Vector3 = function(x, y, z) {\n\tthis.x = x || 0;\n\tthis.y = y || 0;\n\tthis.z = z || 0;\n};\n\n$jit.Vector3 = Vector3;\n\nVector3.prototype = {\n  set: function(v) {\n    this.x = v.x;\n    this.y = v.y;\n    this.z = v.z;\n  },\n\n  setc: function(x, y, z) {\n\t\tthis.x = x;\n\t\tthis.y = y;\n\t\tthis.z = z;\n\t},\n\t\n\tgetc: function() {\n\t  return this;\n\t},\n\t\n\t//TODO(nico): getp\n\n\tadd: function(v1, v2) {\n\t\tthis.x = v1.x + v2.x;\n\t\tthis.y = v1.y + v2.y;\n\t\tthis.z = v1.z + v2.z;\n\t\treturn this;\n\t},\n\n\t$add: function(v) {\n\t\tthis.x += v.x;\n\t\tthis.y += v.y;\n\t\tthis.z += v.z;\n\t\treturn this;\n\t},\n\n\taddScalar: function(s) {\n\t\tthis.x += s;\n\t\tthis.y += s;\n\t\tthis.z += s;\n\t\treturn this;\n\t},\n\n\tsub: function(v1, v2) {\n\t\tthis.x = v1.x - v2.x;\n\t\tthis.y = v1.y - v2.y;\n\t\tthis.z = v1.z - v2.z;\n\t\treturn this;\n\t},\n\n\t$sub: function(v) {\n\t\tthis.x -= v.x;\n\t\tthis.y -= v.y;\n\t\tthis.z -= v.z;\n\t\treturn this;\n\t},\n\n\tcross: function(v1, v2) {\n\t\tthis.x = v1.y * v2.z - v1.z * v2.y;\n\t\tthis.y = v1.z * v2.x - v1.x * v2.z;\n\t\tthis.z = v1.x * v2.y - v1.y * v2.x;\n\t\treturn this;\n\t},\n\n\t$cross: function(v) {\n\t\tvar tx = this.x, ty = this.y, tz = this.z;\n\n\t\tthis.x = ty * v.z - tz * v.y;\n\t\tthis.y = tz * v.x - tx * v.z;\n\t\tthis.z = tx * v.y - ty * v.x;\n\t\treturn this;\n\t},\n\n\t$multiply: function(v) {\n\t\tthis.x *= v.x;\n\t\tthis.y *= v.y;\n\t\tthis.z *= v.z;\n\t\treturn this;\n\t},\n\n\t$scale: function(s) {\n\t\tthis.x *= s;\n\t\tthis.y *= s;\n\t\tthis.z *= s;\n\t\treturn this;\n\t},\n\n\tdot: function(v) {\n\t\treturn this.x * v.x + this.y * v.y + this.z * v.z;\n\t},\n\n\tdistanceTo: function(v) {\n\t\treturn Math.sqrt(this.distanceToSquared(v));\n\t},\n\n\tdistanceToSquared: function(v) {\n\t\tvar dx = this.x - v.x, dy = this.y - v.y, dz = this.z - v.z;\n\t\treturn dx * dx + dy * dy + dz * dz;\n\t},\n\n\tnorm: function() {\n\t\treturn Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z );\n\t},\n\n\tnormSquared: function() {\n\t\treturn this.x * this.x + this.y * this.y + this.z * this.z;\n\t},\n\n\tnegate: function() {\n\t\tthis.x = - this.x;\n\t\tthis.y = - this.y;\n\t\tthis.z = - this.z;\n\t\treturn this;\n\t},\n\n\tnormalize: function() {\n\t  var len = this.norm();\n\t\tif ( len > 0 ) {\n\t\t\tthis.$scale(1 / len);\n\t\t} \n\t\treturn this;\n\t},\n\n\tisZero: function() {\n\t\tvar almostZero = 0.0001,\n\t\t    abs = Math.abs;\n\t\t\n\t\treturn abs(this.x) < almostZero && abs(this.y) < almostZero && abs(this.z) < almostZero;\n\t},\n\n\tclone: function() {\n\t\treturn new Vector3(this.x, this.y, this.z);\n\t}\n};\n\nvar $V3 = function(a, b, c) { return new Vector3(a, b, c); };\n\n/*\n * Matrix4 class based on three.js http://github.com/mrdoob/three.js, Copyright (c) Mr.doob http://mrdoob.com/, MIT License http://github.com/mrdoob/three.js/blob/master/LICENSE \n */\n\nvar Matrix4 = function() {\n\tthis._x = new Vector3();\n\tthis._y = new Vector3();\n\tthis._z = new Vector3();\n};\n\n$jit.Matrix4 = Matrix4;\n\nMatrix4.prototype = {\n\n\tn11: 1, n12: 0, n13: 0, n14: 0,\n\tn21: 0, n22: 1, n23: 0, n24: 0,\n\tn31: 0, n32: 0, n33: 1, n34: 0,\n\tn41: 0, n42: 0, n43: 0, n44: 1,\n\n\tidentity: function() {\n\t\tthis.n11 = 1; this.n12 = 0; this.n13 = 0; this.n14 = 0;\n\t\tthis.n21 = 0; this.n22 = 1; this.n23 = 0; this.n24 = 0;\n\t\tthis.n31 = 0; this.n32 = 0; this.n33 = 1; this.n34 = 0;\n\t\tthis.n41 = 0; this.n42 = 0; this.n43 = 0; this.n44 = 1;\n\t},\n\n\tlookAt: function(eye, center, up) {\n\t\tvar x = this._x, y = this._y, z = this._z;\n\n\t\tz.sub(eye, center);\n\t\tz.normalize();\n\n\t\tx.cross(up, z);\n\t\tx.normalize();\n\n\t\ty.cross(z, x);\n\t\ty.normalize();\n\n\t\tthis.n11 = x.x; this.n12 = x.y; this.n13 = x.z; this.n14 = - x.dot( eye );\n\t\tthis.n21 = y.x; this.n22 = y.y; this.n23 = y.z; this.n24 = - y.dot( eye );\n\t\tthis.n31 = z.x; this.n32 = z.y; this.n33 = z.z; this.n34 = - z.dot( eye );\n\t},\n\n\ttransform: function(v) {\n\t\tvar vx = v.x, vy = v.y, vz = v.z, vw = v.w ? v.w : 1.0;\n\n\t\tv.x = this.n11 * vx + this.n12 * vy + this.n13 * vz + this.n14 * vw;\n\t\tv.y = this.n21 * vx + this.n22 * vy + this.n23 * vz + this.n24 * vw;\n\t\tv.z = this.n31 * vx + this.n32 * vy + this.n33 * vz + this.n34 * vw;\n\n\t\tvw = this.n41 * vx + this.n42 * vy + this.n43 * vz + this.n44 * vw;\n\n\t\tif(v.w) {\n\t\t\tv.w = vw;\n\t\t} else {\n\t\t\tv.x = v.x / vw;\n\t\t\tv.y = v.y / vw;\n\t\t\tv.z = v.z / vw;\n\t\t}\n\t},\n\n\tmultiply: function(a, b) {\n\t\tthis.n11 = a.n11 * b.n11 + a.n12 * b.n21 + a.n13 * b.n31 + a.n14 * b.n41;\n\t\tthis.n12 = a.n11 * b.n12 + a.n12 * b.n22 + a.n13 * b.n32 + a.n14 * b.n42;\n\t\tthis.n13 = a.n11 * b.n13 + a.n12 * b.n23 + a.n13 * b.n33 + a.n14 * b.n43;\n\t\tthis.n14 = a.n11 * b.n14 + a.n12 * b.n24 + a.n13 * b.n34 + a.n14 * b.n44;\n\n\t\tthis.n21 = a.n21 * b.n11 + a.n22 * b.n21 + a.n23 * b.n31 + a.n24 * b.n41;\n\t\tthis.n22 = a.n21 * b.n12 + a.n22 * b.n22 + a.n23 * b.n32 + a.n24 * b.n42;\n\t\tthis.n23 = a.n21 * b.n13 + a.n22 * b.n23 + a.n23 * b.n33 + a.n24 * b.n43;\n\t\tthis.n24 = a.n21 * b.n14 + a.n22 * b.n24 + a.n23 * b.n34 + a.n24 * b.n44;\n\n\t\tthis.n31 = a.n31 * b.n11 + a.n32 * b.n21 + a.n33 * b.n31 + a.n34 * b.n41;\n\t\tthis.n32 = a.n31 * b.n12 + a.n32 * b.n22 + a.n33 * b.n32 + a.n34 * b.n42;\n\t\tthis.n33 = a.n31 * b.n13 + a.n32 * b.n23 + a.n33 * b.n33 + a.n34 * b.n43;\n\t\tthis.n34 = a.n31 * b.n14 + a.n32 * b.n24 + a.n33 * b.n34 + a.n34 * b.n44;\n\n\t\tthis.n41 = a.n41 * b.n11 + a.n42 * b.n21 + a.n43 * b.n31 + a.n44 * b.n41;\n\t\tthis.n42 = a.n41 * b.n12 + a.n42 * b.n22 + a.n43 * b.n32 + a.n44 * b.n42;\n\t\tthis.n43 = a.n41 * b.n13 + a.n42 * b.n23 + a.n43 * b.n33 + a.n44 * b.n43;\n\t\tthis.n44 = a.n41 * b.n14 + a.n42 * b.n24 + a.n43 * b.n34 + a.n44 * b.n44;\n\t},\n\n\t$multiply: function(m) {\n\t\tvar n11 = this.n11, n12 = this.n12, n13 = this.n13, n14 = this.n14,\n    \t\tn21 = this.n21, n22 = this.n22, n23 = this.n23, n24 = this.n24,\n    \t\tn31 = this.n31, n32 = this.n32, n33 = this.n33, n34 = this.n34,\n    \t\tn41 = this.n41, n42 = this.n42, n43 = this.n43, n44 = this.n44;\n\n\t\tthis.n11 = n11 * m.n11 + n12 * m.n21 + n13 * m.n31 + n14 * m.n41;\n\t\tthis.n12 = n11 * m.n12 + n12 * m.n22 + n13 * m.n32 + n14 * m.n42;\n\t\tthis.n13 = n11 * m.n13 + n12 * m.n23 + n13 * m.n33 + n14 * m.n43;\n\t\tthis.n14 = n11 * m.n14 + n12 * m.n24 + n13 * m.n34 + n14 * m.n44;\n\n\t\tthis.n21 = n21 * m.n11 + n22 * m.n21 + n23 * m.n31 + n24 * m.n41;\n\t\tthis.n22 = n21 * m.n12 + n22 * m.n22 + n23 * m.n32 + n24 * m.n42;\n\t\tthis.n23 = n21 * m.n13 + n22 * m.n23 + n23 * m.n33 + n24 * m.n43;\n\t\tthis.n24 = n21 * m.n14 + n22 * m.n24 + n23 * m.n34 + n24 * m.n44;\n\n\t\tthis.n31 = n31 * m.n11 + n32 * m.n21 + n33 * m.n31 + n34 * m.n41;\n\t\tthis.n32 = n31 * m.n12 + n32 * m.n22 + n33 * m.n32 + n34 * m.n42;\n\t\tthis.n33 = n31 * m.n13 + n32 * m.n23 + n33 * m.n33 + n34 * m.n43;\n\t\tthis.n34 = n31 * m.n14 + n32 * m.n24 + n33 * m.n34 + n34 * m.n44;\n\n\t\tthis.n41 = n41 * m.n11 + n42 * m.n21 + n43 * m.n31 + n44 * m.n41;\n\t\tthis.n42 = n41 * m.n12 + n42 * m.n22 + n43 * m.n32 + n44 * m.n42;\n\t\tthis.n43 = n41 * m.n13 + n42 * m.n23 + n43 * m.n33 + n44 * m.n43;\n\t\tthis.n44 = n41 * m.n14 + n42 * m.n24 + n43 * m.n34 + n44 * m.n44;\n\t},\n\n\t$scale: function(s) {\n\t\tthis.n11 *= s; this.n12 *= s; this.n13 *= s; this.n14 *= s;\n\t\tthis.n21 *= s; this.n22 *= s; this.n23 *= s; this.n24 *= s;\n\t\tthis.n31 *= s; this.n32 *= s; this.n33 *= s; this.n34 *= s;\n\t\tthis.n41 *= s; this.n42 *= s; this.n43 *= s; this.n44 *= s;\n\t\treturn this;\n\t},\n\t\n\t$add: function(m) {\n\t  this.n11 += m.n11;\n\t  this.n12 += m.n12;\n\t  this.n13 += m.n13;\n\t  this.n14 += m.n14;\n\t  this.n21 += m.n21;\n\t  this.n22 += m.n22;\n\t  this.n23 += m.n23;\n\t  this.n24 += m.n24;\n\t  this.n31 += m.n31;\n\t  this.n32 += m.n32;\n\t  this.n33 += m.n33;\n\t  this.n34 += m.n34;\n\t  this.n41 += m.n41;\n\t  this.n42 += m.n42;\n\t  this.n43 += m.n43;\n\t  this.n44 += m.n44;\n\t  return this;\n\t},\n\n\tdeterminant: function() {\n\t\treturn (\n\t\t\tthis.n14 * this.n23 * this.n32 * this.n41-\n\t\t\tthis.n13 * this.n24 * this.n32 * this.n41-\n\t\t\tthis.n14 * this.n22 * this.n33 * this.n41+\n\t\t\tthis.n12 * this.n24 * this.n33 * this.n41+\n\n\t\t\tthis.n13 * this.n22 * this.n34 * this.n41-\n\t\t\tthis.n12 * this.n23 * this.n34 * this.n41-\n\t\t\tthis.n14 * this.n23 * this.n31 * this.n42+\n\t\t\tthis.n13 * this.n24 * this.n31 * this.n42+\n\n\t\t\tthis.n14 * this.n21 * this.n33 * this.n42-\n\t\t\tthis.n11 * this.n24 * this.n33 * this.n42-\n\t\t\tthis.n13 * this.n21 * this.n34 * this.n42+\n\t\t\tthis.n11 * this.n23 * this.n34 * this.n42+\n\n\t\t\tthis.n14 * this.n22 * this.n31 * this.n43-\n\t\t\tthis.n12 * this.n24 * this.n31 * this.n43-\n\t\t\tthis.n14 * this.n21 * this.n32 * this.n43+\n\t\t\tthis.n11 * this.n24 * this.n32 * this.n43+\n\n\t\t\tthis.n12 * this.n21 * this.n34 * this.n43-\n\t\t\tthis.n11 * this.n22 * this.n34 * this.n43-\n\t\t\tthis.n13 * this.n22 * this.n31 * this.n44+\n\t\t\tthis.n12 * this.n23 * this.n31 * this.n44+\n\n\t\t\tthis.n13 * this.n21 * this.n32 * this.n44-\n\t\t\tthis.n11 * this.n23 * this.n32 * this.n44-\n\t\t\tthis.n12 * this.n21 * this.n33 * this.n44+\n\t\t\tthis.n11 * this.n22 * this.n33 * this.n44 );\n\t},\n\n  $transpose: function() {\n\t  function swap(obj, p1, p2) {\n\t    var aux = obj[p1];\n\t    obj[p1] = obj[p2];\n\t    obj[p2] = aux;\n\t  }\n\t  \n\t  swap(this, 'n21', 'n12');\n\t  swap(this, 'n31', 'n13');\n\t  swap(this, 'n32', 'n23');\n\t  swap(this, 'n41', 'n14');\n\t  swap(this, 'n42', 'n24');\n\t  swap(this, 'n43', 'n34');\n\t  return this;\n  },\n  \n\tclone: function() {\n\t\tvar m = new Matrix4();\n\t\tm.n11 = this.n11; m.n12 = this.n12; m.n13 = this.n13; m.n14 = this.n14;\n\t\tm.n21 = this.n21; m.n22 = this.n22; m.n23 = this.n23; m.n24 = this.n24;\n\t\tm.n31 = this.n31; m.n32 = this.n32; m.n33 = this.n33; m.n34 = this.n34;\n\t\tm.n41 = this.n41; m.n42 = this.n42; m.n43 = this.n43; m.n44 = this.n44;\n\t\treturn m;\n\t},\n\t\n\tflatten: function() {\n\t  return [this.n11, this.n21, this.n31, this.n41,\n\t      this.n12, this.n22, this.n32, this.n42,\n\t      this.n13, this.n23, this.n33, this.n43,\n\t      this.n14, this.n24, this.n34, this.n44];\n\t}\n};\n\nMatrix4.translationMatrix = function(x, y, z) {\n\tvar m = new Matrix4();\n\n\tm.n14 = x;\n\tm.n24 = y;\n\tm.n34 = z;\n\n\treturn m;\n};\n\nMatrix4.scaleMatrix = function(x, y, z) {\n\tvar m = new Matrix4();\n\n\tm.n11 = x;\n\tm.n22 = y;\n\tm.n33 = z;\n\n\treturn m;\n};\n\nMatrix4.rotationXMatrix = function(theta) {\n\tvar rot = new Matrix4();\n\n\trot.n22 = rot.n33 = Math.cos( theta );\n\trot.n32 = Math.sin( theta );\n\trot.n23 = - rot.n32;\n\n\treturn rot;\n};\n\nMatrix4.rotationYMatrix = function(theta) {\n\tvar rot = new Matrix4();\n\n\trot.n11 = rot.n33 = Math.cos( theta );\n\trot.n13 = Math.sin( theta );\n\trot.n31 = - rot.n13;\n\n\treturn rot;\n};\n\nMatrix4.rotationZMatrix = function(theta) {\n\tvar rot = new Matrix4();\n\n\trot.n11 = rot.n22 = Math.cos( theta );\n\trot.n21 = Math.sin( theta );\n\trot.n12 = - rot.n21;\n\n\treturn rot;\n};\n\nMatrix4.makeInvert = function(m1) {\n\tvar m2 = new Matrix4();\n\n\tm2.n11 = m1.n23*m1.n34*m1.n42 - m1.n24*m1.n33*m1.n42 + m1.n24*m1.n32*m1.n43 - m1.n22*m1.n34*m1.n43 - m1.n23*m1.n32*m1.n44 + m1.n22*m1.n33*m1.n44;\n\tm2.n12 = m1.n14*m1.n33*m1.n42 - m1.n13*m1.n34*m1.n42 - m1.n14*m1.n32*m1.n43 + m1.n12*m1.n34*m1.n43 + m1.n13*m1.n32*m1.n44 - m1.n12*m1.n33*m1.n44;\n\tm2.n13 = m1.n13*m1.n24*m1.n42 - m1.n14*m1.n23*m1.n42 + m1.n14*m1.n22*m1.n43 - m1.n12*m1.n24*m1.n43 - m1.n13*m1.n22*m1.n44 + m1.n12*m1.n23*m1.n44;\n\tm2.n14 = m1.n14*m1.n23*m1.n32 - m1.n13*m1.n24*m1.n32 - m1.n14*m1.n22*m1.n33 + m1.n12*m1.n24*m1.n33 + m1.n13*m1.n22*m1.n34 - m1.n12*m1.n23*m1.n34;\n\tm2.n21 = m1.n24*m1.n33*m1.n41 - m1.n23*m1.n34*m1.n41 - m1.n24*m1.n31*m1.n43 + m1.n21*m1.n34*m1.n43 + m1.n23*m1.n31*m1.n44 - m1.n21*m1.n33*m1.n44;\n\tm2.n22 = m1.n13*m1.n34*m1.n41 - m1.n14*m1.n33*m1.n41 + m1.n14*m1.n31*m1.n43 - m1.n11*m1.n34*m1.n43 - m1.n13*m1.n31*m1.n44 + m1.n11*m1.n33*m1.n44;\n\tm2.n23 = m1.n14*m1.n23*m1.n41 - m1.n13*m1.n24*m1.n41 - m1.n14*m1.n21*m1.n43 + m1.n11*m1.n24*m1.n43 + m1.n13*m1.n21*m1.n44 - m1.n11*m1.n23*m1.n44;\n\tm2.n24 = m1.n13*m1.n24*m1.n31 - m1.n14*m1.n23*m1.n31 + m1.n14*m1.n21*m1.n33 - m1.n11*m1.n24*m1.n33 - m1.n13*m1.n21*m1.n34 + m1.n11*m1.n23*m1.n34;\n\tm2.n31 = m1.n22*m1.n34*m1.n41 - m1.n24*m1.n32*m1.n41 + m1.n24*m1.n31*m1.n42 - m1.n21*m1.n34*m1.n42 - m1.n22*m1.n31*m1.n44 + m1.n21*m1.n32*m1.n44;\n\tm2.n32 = m1.n14*m1.n32*m1.n41 - m1.n12*m1.n34*m1.n41 - m1.n14*m1.n31*m1.n42 + m1.n11*m1.n34*m1.n42 + m1.n12*m1.n31*m1.n44 - m1.n11*m1.n32*m1.n44;\n\tm2.n33 = m1.n13*m1.n24*m1.n41 - m1.n14*m1.n22*m1.n41 + m1.n14*m1.n21*m1.n42 - m1.n11*m1.n24*m1.n42 - m1.n12*m1.n21*m1.n44 + m1.n11*m1.n22*m1.n44;\n\tm2.n34 = m1.n14*m1.n22*m1.n31 - m1.n12*m1.n24*m1.n31 - m1.n14*m1.n21*m1.n32 + m1.n11*m1.n24*m1.n32 + m1.n12*m1.n21*m1.n34 - m1.n11*m1.n22*m1.n34;\n\tm2.n41 = m1.n23*m1.n32*m1.n41 - m1.n22*m1.n33*m1.n41 - m1.n23*m1.n31*m1.n42 + m1.n21*m1.n33*m1.n42 + m1.n22*m1.n31*m1.n43 - m1.n21*m1.n32*m1.n43;\n\tm2.n42 = m1.n12*m1.n33*m1.n41 - m1.n13*m1.n32*m1.n41 + m1.n13*m1.n31*m1.n42 - m1.n11*m1.n33*m1.n42 - m1.n12*m1.n31*m1.n43 + m1.n11*m1.n32*m1.n43;\n\tm2.n43 = m1.n13*m1.n22*m1.n41 - m1.n12*m1.n23*m1.n41 - m1.n13*m1.n21*m1.n42 + m1.n11*m1.n23*m1.n42 + m1.n12*m1.n21*m1.n43 - m1.n11*m1.n22*m1.n43;\n\tm2.n44 = m1.n12*m1.n23*m1.n31 - m1.n13*m1.n22*m1.n31 + m1.n13*m1.n21*m1.n32 - m1.n11*m1.n23*m1.n32 - m1.n12*m1.n21*m1.n33 + m1.n11*m1.n22*m1.n33;\n\tm2.$scale(1 / m1.determinant());\n\n\treturn m2;\n};\n\nMatrix4.makeFrustum = function( left, right, bottom, top, near, far ) {\n\tvar m, x, y, a, b, c, d;\n\n\tm = new Matrix4();\n\tx = 2 * near / ( right - left );\n\ty = 2 * near / ( top - bottom );\n\ta = ( right + left ) / ( right - left );\n\tb = ( top + bottom ) / ( top - bottom );\n\tc = - ( far + near ) / ( far - near );\n\td = - 2 * far * near / ( far - near );\n\n\tm.n11 = x;  m.n12 = 0;  m.n13 = a;   m.n14 = 0;\n\tm.n21 = 0;  m.n22 = y;  m.n23 = b;   m.n24 = 0;\n\tm.n31 = 0;  m.n32 = 0;  m.n33 = c;   m.n34 = d;\n\tm.n41 = 0;  m.n42 = 0;  m.n43 = - 1; m.n44 = 0;\n\n\treturn m;\n};\n\nMatrix4.makePerspective = function( fov, aspect, near, far ) {\n\tvar ymax, ymin, xmin, xmax;\n\n\tymax = near * Math.tan( fov * Math.PI / 360 );\n\tymin = - ymax;\n\txmin = ymin * aspect;\n\txmax = ymax * aspect;\n\n\treturn Matrix4.makeFrustum( xmin, xmax, ymin, ymax, near, far );\n};\n\nMatrix4.makeOrtho = function( left, right, top, bottom, near, far ) {\n\tvar m, x, y, z, w, h, p;\n\n\tm = new Matrix4();\n\tw = right - left;\n\th = bottom - top;\n\tp = far - near;\n\tx = ( right + left ) / w;\n\ty = ( bottom + top ) / h;\n\tz = ( far + near ) / p;\n\n\tm.n11 = 2 / w; m.n12 = 0;     m.n13 = 0;      m.n14 = -x;\n\tm.n21 = 0;     m.n22 = 2 / h; m.n23 = 0;      m.n24 = -y;\n\tm.n31 = 0;     m.n32 = 0;     m.n33 = -2 / p; m.n34 = -z;\n\tm.n41 = 0;     m.n42 = 0;     m.n43 = 0;      m.n44 = 1;\n\n\treturn m;\n};\n\n\n/*\n * Camera class based on three.js http://github.com/mrdoob/three.js, Copyright (c) Mr.doob http://mrdoob.com/, MIT License http://github.com/mrdoob/three.js/blob/master/LICENSE \n */\n\nvar Camera = function (fov, aspect, near, far) {\n\tthis.projectionMatrix = Matrix4.makePerspective(fov, aspect, near, far);\n};\n\nCamera.prototype = {\n  position: new Vector3,\n  target: {\n    position: new Vector3\n  },\n  up: new Vector3(0, 1, 0),\n  matrix: new Matrix4,\n  \n  updateMatrix: function() {\n    this.matrix.lookAt(this.position, this.target.position, this.up);\n  }\n};\n\n\nCanvas.Base['3D'] = new Class({\n  Implements: Canvas.Base['2D'],\n  \n  program: null,\n  camera: null,\n  \n  initialize: function(viz) {\n    this.viz = viz;\n    this.opt = viz.config;\n    this.size = false;\n    this.createCanvas();\n    this.initWebGL();\n    this.initCamera();\n  },\n  \n  initWebGL: function() {\n    //initialize context\n    var gl = this.getCtx();\n    //get viewport size\n    var size = this.getSize();\n    //compile and get shaders\n    var fragmentShader = this.getShader(Canvas.Base['3D'].FragmentShader, gl.FRAGMENT_SHADER);\n    var vertexShader = this.getShader(Canvas.Base['3D'].VertexShader, gl.VERTEX_SHADER);\n    //create program and link shaders\n    var program = gl.createProgram();\n    gl.attachShader(program, vertexShader);\n    gl.attachShader(program, fragmentShader);\n    gl.linkProgram(program);\n    if (!gl.getProgramParameter(program, gl.LINK_STATUS)) {\n      throw \"Could not link shaders\";\n    }\n    gl.useProgram(program);\n    //bind name to variable location in shaders\n    $.extend(program, {\n      'viewMatrix': gl.getUniformLocation(program, 'viewMatrix'),\n      'projectionMatrix': gl.getUniformLocation(program, 'projectionMatrix'),\n      'normalMatrix': gl.getUniformLocation(program, 'normalMatrix'),\n      'color': gl.getUniformLocation(program, 'color'),\n      \n      'enableLighting': gl.getUniformLocation(program, 'enableLighting'),\n      'ambientColor': gl.getUniformLocation(program, 'ambientColor'),\n      'directionalColor': gl.getUniformLocation(program, 'directionalColor'),\n      'lightingDirection': gl.getUniformLocation(program, 'lightingDirection'),\n      \n      'position': gl.getAttribLocation(program, 'position'),\n      'normal': gl.getAttribLocation(program, 'normal'),\n    });\n    gl.enableVertexAttribArray(program.position);\n    gl.enableVertexAttribArray(program.normal);\n    this.program = program;\n    //set general rendering options\n    gl.clearColor(0, 0, 0, 0);\n    gl.clearDepth(1);\n\n    gl.enable(gl.DEPTH_TEST);\n    gl.depthFunc(gl.LEQUAL);\n\n    gl.enable(gl.BLEND);\n    gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);\n    \n    gl.viewport(0, 0, size.width, size.height);\n  },\n  \n  initCamera: function() {\n    var size = this.getSize();\n    var camera = new Camera(75, size.width / size.height, 1, 1000);\n    camera.position.z = 500;\n    this.camera = camera;\n  },\n  \n  getShader: function(src, type) {\n    var gl = this.ctx;\n    var shader = gl.createShader(type);\n    gl.shaderSource(shader, src);\n    gl.compileShader(shader);\n    if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {\n      var info = gl.getShaderInfoLog(shader);\n      throw \"Could not compile shader src: \" + info;\n    }\n    return shader;\n  },\n\n  getCtx: function() {\n    if(!this.ctx) \n      return this.ctx = this.canvas.getContext('experimental-webgl');\n    return this.ctx;\n  },\n  \n  resize: function(width, height) {\n    var size = this.getSize(),\n        canvas = this.canvas,\n        styles = canvas.style,\n        gl = this.getCtx();\n    this.size = false;\n    canvas.width = width;\n    canvas.height = height;\n    styles.width = width + \"px\";\n    styles.height = height + \"px\";\n    gl.viewport(0, 0, width, height);\n\n    this.translateOffsetX =\n      this.translateOffsetY = 0;\n    this.scaleOffsetX = \n      this.scaleOffsetY = 1;\n    this.clear();\n    this.viz.resize(width, height, this);\n  },\n\n  translateToCenter: $.empty,\n  scale: $.empty,\n  \n  translate: function(x, y, z, disablePlot) {\n    var sx = this.scaleOffsetX,\n        sy = this.scaleOffsetY;\n    this.translateOffsetX += x*sx;\n    this.translateOffsetY += y*sy;\n    var pos = this.camera.position;\n    pos.x += x;\n    pos.y += y;\n    pos.z += z;\n    !disablePlot && this.plot();\n  },\n\n  clear: function(){\n    var gl = this.getCtx();\n    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);\n    //TODO(nico) is this OK? I mean, to put this line here.\n    this.camera.updateMatrix();\n  },\n  \n  plot: function() {\n    this.clear();\n    this.viz.plot(this);\n  }\n});\n\n//Shaders code\nCanvas.Base['3D'].FragmentShader = [\n  \"#ifdef GL_ES\",\n  \"precision highp float;\",\n  \"#endif\",\n  \n  \"varying vec4 vcolor;\",\n  \"varying vec3 lightWeighting;\",\n  \n  \"void main(){\",\n  \n    \"gl_FragColor = vec4(vcolor.rgb * lightWeighting, vcolor.a);\",\n  \n  \"}\"\n].join(\"\\n\");\n\nCanvas.Base['3D'].VertexShader = [\n  \"attribute vec3 position;\",\n  \"attribute vec3 normal;\",\n  \"uniform vec4 color;\",\n  \n  \"uniform mat4 viewMatrix;\",\n  \"uniform mat4 projectionMatrix;\",\n  \"uniform mat4 normalMatrix;\",\n\n  \"uniform bool enableLighting;\",\n  \"uniform vec3 ambientColor;\",\n  \"uniform vec3 directionalColor;\",\n  \"uniform vec3 lightingDirection;\",\n  \n  \"varying vec4 vcolor;\",\n  \"varying vec3 lightWeighting;\",\n  \n  \"void main(void) {\",\n  \n    \"if(!enableLighting) {\",\n      \"lightWeighting = vec3(1.0, 1.0, 1.0);\",\n    \"} else {\",\n      \"vec4 transformedNormal = normalMatrix * vec4(normal, 1.0);\",\n      \"float directionalLightWeighting = max(dot(transformedNormal.xyz, lightingDirection), 0.0);\",\n      \"lightWeighting = ambientColor + directionalColor * directionalLightWeighting;\",\n    \"}\",\n    \n    \"vcolor = color;\",\n    \"gl_Position = projectionMatrix * viewMatrix * vec4( position, 1.0 );\",\n  \n  \"}\"\n].join(\"\\n\");\n\n/*\n * Some of the geometries where inspired by three.js http://github.com/mrdoob/three.js, Copyright (c) Mr.doob http://mrdoob.com/, MIT License http://github.com/mrdoob/three.js/blob/master/LICENSE \n */\n\nvar O3D = {};\n\n$jit.O3D = O3D;\n\nO3D.base = new Class({\n  //array of { x, y, z } of float\n  vertices: [],\n  //array of { a, b, c, d? } of int\n  faces: [],\n  //updated on plotNode/plotEdge\n  position: new Vector3,\n  rotation: new Vector3,\n  scale: new Vector3(1, 1, 1),\n  //intrinsic coordinates\n  matrix: new Matrix4,\n  \n  update: function(elem) {\n    if(elem.nodeFrom && elem.nodeTo) {\n      this.updateEdge(elem);\n    } else {\n      this.updateNode(elem);\n    }\n  },\n  \n  updateNode: $.empty,\n  \n  updateEdge: function(elem) {\n    this.updateNode(elem);\n  },\n\n  updateMatrix: function() {\n    var pos = this.position,\n        rot = this.rotation,\n        scale = this.scale,\n        matrix = this.matrix;\n    \n    matrix.identity();\n  \n    matrix.$multiply( Matrix4.translationMatrix( pos.x, pos.y, pos.z ) );\n    matrix.$multiply( Matrix4.rotationXMatrix( rot.x ) );\n    matrix.$multiply( Matrix4.rotationYMatrix( rot.y ) );\n    matrix.$multiply( Matrix4.rotationZMatrix( rot.z ) );\n    matrix.$multiply( Matrix4.scaleMatrix( scale.x, scale.y, scale.z ) );\n  },\n  //compute faces normals\n  computeNormals: function () {\n    for (var f=0, vs=this.vertices, fs=this.faces, len=fs.length; f < len; f++) {\n      var va = vs[fs[f].a],\n          vb = vs[fs[f].b],\n          vc = vs[fs[f].c],\n          cb = new Vector3,\n          ab = new Vector3;\n      \n      cb.sub(vc, vb);\n      ab.sub(va, vb);\n      cb.$cross(ab);\n\n      if (!cb.isZero()) cb.normalize();\n      \n      fs[f].normal = cb;\n    }\n  }\n});\n\n//IsoCube\nfunction IsoCube() {\n  var vs = this.vertices,\n      f4 = this.faces,\n      vsp = function(x, y, z) { vs.push({ x: x, y: y, z: z }); },\n      f4p = function(a, b, c, d) { f4.push({ a: a, b: b, c: c, d: d }); };\n  \n  vsp( 1,  1, -1);\n  vsp( 1, -1, -1);\n  vsp(-1, -1, -1);\n  vsp(-1,  1, -1);\n  vsp( 1,  1,  1);\n  vsp( 1, -1,  1);\n  vsp(-1, -1,  1);\n  vsp(-1,  1,  1);\n  \n  f4p(0, 1, 2, 3);\n  f4p(4, 7, 6, 5);\n  f4p(0, 4, 5, 1);\n  f4p(1, 5, 6, 2);\n  f4p(2, 6, 7, 3);\n  f4p(4, 0, 3, 7);\n}\n\n//Cube\nO3D.cube = new Class({\n  Implements: O3D.base,\n  \n  initialize: function() {\n    IsoCube.call(this);\n    this.computeNormals();\n  },\n  \n  updateNode: function(obj) {\n    var dim = obj.getData('dim'),\n        pos = obj.pos;\n    \n    this.position.setc(pos.x, pos.y, pos.z);\n    this.scale.setc(dim, dim, dim);\n    this.updateMatrix();\n  }\n});\n\nO3D.sphere = new Class({\n  Implements: O3D.base,\n  \n  radius: 1,\n  segments_width: 10,\n  segments_height: 10,\n  \n  initialize: function() {\n    var radius = this.radius,\n        segments_width = this.segments_width,\n        segments_height = this.segments_height,\n        gridX = segments_width || 8,\n        gridY = segments_height || 6,\n        cos = Math.cos,\n        sin = Math.sin,\n        max = Math.max,\n        pi = Math.PI;\n  \n    var iHor = max(3, gridX),\n        iVer = max(2, gridY),\n        aVtc = [];\n  \n    for(var j=0; j < (iVer + 1) ; j++) {\n      var fRad1 = j / iVer,\n          fZ = radius * cos(fRad1 * pi),\n          fRds = radius * sin(fRad1 * pi),\n          aRow = [],\n          oVtx = 0;\n\n      for(var i=0; i<iHor; i++) {\n        var fRad2 = 2 * i / iHor,\n            fX = fRds * Math.sin(fRad2 * pi),\n            fY = fRds * Math.cos(fRad2 * pi);\n        if (!(( j == 0 || j == iVer) && i > 0)) {\n          oVtx = this.vertices.push({ x: fY, y: fZ, z: fX}) - 1;\n        }\n        aRow.push(oVtx);\n      }\n      aVtc.push(aRow);\n    }\n  \n    var iVerNum = aVtc.length;\n    for (var j=0; j<iVerNum; j++) {\n      var iHorNum = aVtc[j].length;\n      if (j > 0) {\n        for (var i = 0; i<iHorNum; i++ ) {\n          var bEnd = i == ( iHorNum - 1 );\n          var aP1 = aVtc[j][ bEnd ? 0 : i + 1 ];\n          var aP2 = aVtc[j][ ( bEnd ? iHorNum - 1 : i ) ];\n          var aP3 = aVtc[j -1][ ( bEnd ? iHorNum - 1 : i ) ];\n          var aP4 = aVtc[j -1][ bEnd ? 0 : i + 1 ];\n  \n          if(j < ( aVtc.length - 1)) {\n            this.faces.push({ a: aP1, b: aP2, c: aP3 });\n          }\n          if(j > 1) {\n            this.faces.push({ a: aP1, b: aP3, c: aP4 });\n          }\n        }\n      }\n    }\n    this.computeNormals();\n  },\n  \n  updateNode: function(obj) {\n    var dim = obj.getData('dim'),\n        pos = obj.pos;\n    \n    this.position.setc(pos.x, pos.y, pos.z);\n    this.scale.setc(dim, dim, dim);\n    this.updateMatrix();\n  }\n\n});\n\n\nO3D.tube = new Class({\n  Implements: O3D.base,\n  \n  numSegs: 10,\n  dim: 1,\n  initialize: function() {\n    var vs = this.vertices,\n        f4 = this.faces,\n        vsp = function(x, y, z) { vs.push({ x: x, y: y, z: z }); },\n        f4p = function(a, b, c, d) { f4.push({ a: a, b: b, c: c, d: d }); };\n\n    var scope = this,\n        sin = Math.sin,\n        cos = Math.cos,\n        pi = Math.PI,\n        pi2 = pi * 2,\n        numSegs = this.numSegs,\n        topRad = this.dim,\n        botRad = this.dim;\n  \n    // Top circle vertices\n    for (var i = 0; i < numSegs; i++) {\n      vsp(sin(pi2 * i / numSegs) * topRad, cos(pi2 * i / numSegs) * topRad, -0.5);\n    }\n    // Bottom circle vertices\n    for (var i = 0; i < numSegs; i++) {\n      vsp(sin(pi2 * i / numSegs) * botRad, cos(pi2 * i / numSegs) * botRad, 0.5);\n    }\n    // Body \n    for (var i = 0; i < numSegs; i++) {\n      f4p(i, (i + 1) % numSegs, numSegs + (i + 1) % numSegs, i + numSegs);\n    }\n    this.computeNormals();\n  },\n  \n  updateEdge: function(obj) {\n    var lineWidth = obj.getData('lineWidth'),\n        nodeFrom = obj.nodeFrom,\n        nodeTo = obj.nodeTo,\n        nodeFromPos = nodeFrom.pos,\n        nodeToPos = nodeTo.pos,\n        dist = nodeFromPos.distanceTo(nodeToPos),\n        middle = new Vector3,\n        currentDir = new Vector3(0, 0, 1),\n        dvec = new Vector3;\n    \n    middle.add(nodeFromPos, nodeToPos).$scale(0.5);\n    dvec.sub(nodeToPos, nodeFromPos).normalize();\n    \n    var c = dvec.dot(currentDir),\n        xc = dvec.dot(new Vector3(1, 0, 0)),\n        yc = dvec.dot(new Vector3(0, 1, 0)),\n        t = 1 - c,\n        rotAngle = Math.acos(c),\n        s = Math.sin(rotAngle),\n        rotAxis = currentDir.$cross(dvec).normalize(),\n        x = rotAxis.x,\n        y = rotAxis.y,\n        z = rotAxis.z;\n    \n    var rot = new Matrix4();\n    rot.n11 = t * x * x + c;\n    rot.n12 = t * x * y - s * z;\n    rot.n13 = t * x * z + s * y;\n    rot.n21 = t * x * y + s * z;\n    rot.n22 = t * y * y + c;\n    rot.n23 = t * y * z - s * x;\n    rot.n31 = t * x * z - s * y;\n    rot.n32 = t * y * z + s * x;\n    rot.n33 = t * z * z + c;\n    this.rotationMatrix = rot;\n    this.scale.setc(lineWidth, lineWidth, dist);\n    this.position.setc(middle.x, middle.y, middle.z);\n    this.updateMatrix();\n  },\n  \n  updateMatrix: function() {\n    var pos = this.position,\n        scale = this.scale,\n        matrix = this.matrix;\n    \n    matrix.identity();\n  \n    matrix.$multiply( Matrix4.translationMatrix( pos.x, pos.y, pos.z ) );\n    matrix.$multiply( this.rotationMatrix );\n    matrix.$multiply( Matrix4.scaleMatrix( scale.x, scale.y, scale.z ) );\n  }\n\n}); \n\n\n/*\n * File: Layouts.ForceDirected3D.js\n *\n*/\n\n/*\n * Class: Layouts.ForceDirected3D\n * \n * Implements a Force Directed Layout.\n * \n * Implemented By:\n * \n * <ForceDirected3D>\n * \n */\nLayouts.ForceDirected3D = new Class({\n\n  getOptions: function() {\n    var s = this.canvas.getSize();\n    var w = s.width, h = s.height;\n    //count nodes\n    var count = 0;\n    this.graph.eachNode(function(n) { \n      count++;\n    });\n    var k2 = w * h / count, k = Math.sqrt(k2);\n    var l = this.config.levelDistance;\n    \n    return {\n      width: w,\n      height: h,\n      tstart: w * 0.1,\n      nodef: function(x) { return k2 / (x || 1); },\n      edgef: function(x) { return /* x * x / k; */ k * (x - l); }\n    };\n  },\n  \n  compute: function(property, incremental) {\n    var prop = $.splat(property || ['current', 'start', 'end']);\n    var opt = this.getOptions();\n    NodeDim.compute(this.graph, prop, this.config);\n    this.graph.computeLevels(this.root, 0, \"ignore\");\n    this.graph.eachNode(function(n) {\n      $.each(prop, function(p) {\n        var pos = n.getPos(p);\n        if(pos.isZero()) {\n          pos.x = opt.width/5 * (Math.random() - 0.5);\n          pos.y = opt.height/5 * (Math.random() - 0.5);\n          pos.z = 200 * (Math.random() - 0.5);\n        }\n        //initialize disp vector\n        n.disp = {};\n        $.each(prop, function(p) {\n          n.disp[p] = $V3(0, 0, 0);\n        });\n      });\n    });\n    this.computePositions(prop, opt, incremental);\n  },\n  \n  computePositions: function(property, opt, incremental) {\n    var times = this.config.iterations, i = 0, that = this;\n    if(incremental) {\n      (function iter() {\n        for(var total=incremental.iter, j=0; j<total; j++) {\n          opt.t = opt.tstart * (1 - i++/(times -1));\n          that.computePositionStep(property, opt);\n          if(i >= times) {\n            incremental.onComplete();\n            return;\n          }\n        }\n        incremental.onStep(Math.round(i / (times -1) * 100));\n        setTimeout(iter, 1);\n      })();\n    } else {\n      for(; i < times; i++) {\n        opt.t = opt.tstart * (1 - i/(times -1));\n        this.computePositionStep(property, opt);\n      }\n    }\n  },\n  \n  computePositionStep: function(property, opt) {\n    var graph = this.graph;\n    var min = Math.min, max = Math.max;\n    var dpos = $V3(0, 0, 0);\n    //calculate repulsive forces\n    graph.eachNode(function(v) {\n      //initialize disp\n      $.each(property, function(p) {\n        v.disp[p].x = 0; \n        v.disp[p].y = 0;\n        v.disp[p].z = 0;\n      });\n      graph.eachNode(function(u) {\n        if(u.id != v.id) {\n          $.each(property, function(p) {\n            var vp = v.getPos(p), up = u.getPos(p);\n            dpos.x = vp.x - up.x;\n            dpos.y = vp.y - up.y;\n            dpos.z = vp.z - up.z;\n            var norm = dpos.norm() || 1;\n            v.disp[p].$add(dpos\n                .$scale(opt.nodef(norm) / norm));\n          });\n        }\n      });\n    });\n    //calculate attractive forces\n    var T = !!graph.getNode(this.root).visited;\n    graph.eachNode(function(node) {\n      node.eachAdjacency(function(adj) {\n        var nodeTo = adj.nodeTo;\n        if(!!nodeTo.visited === T) {\n          $.each(property, function(p) {\n            var vp = node.getPos(p), up = nodeTo.getPos(p);\n            dpos.x = vp.x - up.x;\n            dpos.y = vp.y - up.y;\n            dpos.z = vp.z - up.z;\n            var norm = dpos.norm() || 1;\n            node.disp[p].$add(dpos.$scale(-opt.edgef(norm) / norm));\n            nodeTo.disp[p].$add(dpos.$scale(-1));\n          });\n        }\n      });\n      node.visited = !T;\n    });\n    //arrange positions to fit the canvas\n    var t = opt.t, w2 = opt.width / 2, h2 = opt.height / 2;\n    graph.eachNode(function(u) {\n      $.each(property, function(p) {\n        var disp = u.disp[p];\n        var norm = disp.norm() || 1;\n        var p = u.getPos(p);\n        p.$add($V3(disp.x * min(Math.abs(disp.x), t) / norm, \n                   disp.y * min(Math.abs(disp.y), t) / norm,\n                   disp.z * min(Math.abs(disp.z), t) / norm));\n        p.x = min(w2, max(-w2, p.x));\n        p.y = min(h2, max(-h2, p.y));\n        p.z = min(h2, max(-h2, p.z));\n      });\n    });\n  }\n});\n\n$jit.ForceDirected3D = new Class( {\n\n  Implements: [ Loader, Extras, Layouts.ForceDirected3D ],\n\n  initialize: function(controller) {\n    var $ForceDirected3D = $jit.ForceDirected3D;\n\n    var config = {\n      iterations: 50,\n      levelDistance: 50\n    };\n\n    this.controller = this.config = $.merge(Options(\"Canvas\", \"Node\", \"Edge\",\n        \"Fx\", \"Tips\", \"NodeStyles\", \"Events\", \"Navigation\", \"Controller\", \"Label\"), config, controller);\n\n    var canvasConfig = this.config;\n    if(canvasConfig.useCanvas) {\n      this.canvas = canvasConfig.useCanvas;\n      this.config.labelContainer = this.canvas.id + '-label';\n    } else {\n      if(canvasConfig.background) {\n        canvasConfig.background = $.merge({\n          type: 'Circles'\n        }, canvasConfig.background);\n      }\n      this.canvas = new Canvas(this, canvasConfig);\n      this.config.labelContainer = (typeof canvasConfig.injectInto == 'string'? canvasConfig.injectInto : canvasConfig.injectInto.id) + '-label';\n    }\n\n    this.graphOptions = {\n      'klass': Vector3,\n      'Node': {\n        'selected': false,\n        'exist': true,\n        'drawn': true\n      }\n    };\n    this.graph = new Graph(this.graphOptions, this.config.Node,\n        this.config.Edge);\n    this.labels = new $ForceDirected3D.Label[canvasConfig.Label.type](this);\n    this.fx = new $ForceDirected3D.Plot(this, $ForceDirected3D);\n    this.op = new $ForceDirected3D.Op(this);\n    this.json = null;\n    this.busy = false;\n    // initialize extras\n    this.initializeExtras();\n  },\n\n  /* \n    refresh \n    \n    Computes positions and plots the tree.\n  */\n  refresh: function() {\n    this.compute();\n    this.plot();\n  },\n\n  reposition: function() {\n    this.compute('end');\n  },\n\n/*\n  computeIncremental\n  \n  Performs the Force Directed algorithm incrementally.\n  \n  Description:\n  \n  ForceDirected3D algorithms can perform many computations and lead to JavaScript taking too much time to complete. \n  This method splits the algorithm into smaller parts allowing the user to track the evolution of the algorithm and \n  avoiding browser messages such as \"This script is taking too long to complete\".\n  \n  Parameters:\n  \n  opt - (object) The object properties are described below\n  \n  iter - (number) Default's *20*. Split the algorithm into pieces of _iter_ iterations. For example, if the _iterations_ configuration property \n  of your <ForceDirected3D> class is 100, then you could set _iter_ to 20 to split the main algorithm into 5 smaller pieces.\n  \n  property - (string) Default's *end*. Whether to update starting, current or ending node positions. Possible values are 'end', 'start', 'current'. \n  You can also set an array of these properties. If you'd like to keep the current node positions but to perform these \n  computations for final animation positions then you can just choose 'end'.\n  \n  onStep - (function) A callback function called when each \"small part\" of the algorithm completed. This function gets as first formal \n  parameter a percentage value.\n  \n  onComplete - A callback function called when the algorithm completed.\n  \n  Example:\n  \n  In this example I calculate the end positions and then animate the graph to those positions\n  \n  (start code js)\n  var fd = new $jit.ForceDirected3D(...);\n  fd.computeIncremental({\n    iter: 20,\n    property: 'end',\n    onStep: function(perc) {\n      Log.write(\"loading \" + perc + \"%\");\n    },\n    onComplete: function() {\n      Log.write(\"done\");\n      fd.animate();\n    }\n  });\n  (end code)\n  \n  In this example I calculate all positions and (re)plot the graph\n  \n  (start code js)\n  var fd = new ForceDirected3D(...);\n  fd.computeIncremental({\n    iter: 20,\n    property: ['end', 'start', 'current'],\n    onStep: function(perc) {\n      Log.write(\"loading \" + perc + \"%\");\n    },\n    onComplete: function() {\n      Log.write(\"done\");\n      fd.plot();\n    }\n  });\n  (end code)\n  \n  */\n  computeIncremental: function(opt) {\n    opt = $.merge( {\n      iter: 20,\n      property: 'end',\n      onStep: $.empty,\n      onComplete: $.empty\n    }, opt || {});\n\n    this.config.onBeforeCompute(this.graph.getNode(this.root));\n    this.compute(opt.property, opt);\n  },\n\n  /*\n    plot\n   \n    Plots the ForceDirected3D graph. This is a shortcut to *fx.plot*.\n   */\n  plot: function() {\n    this.fx.plot();\n  },\n\n  /*\n     animate\n    \n     Animates the graph from the current positions to the 'end' node positions.\n  */\n  animate: function(opt) {\n    this.fx.animate($.merge( {\n      modes: [ 'linear' ]\n    }, opt || {}));\n  }\n});\n\n$jit.ForceDirected3D.$extend = true;\n\n(function(ForceDirected3D) {\n\n  /*\n     ForceDirected3D.Op\n     \n     Custom extension of <Graph.Op>.\n\n     Extends:\n\n     All <Graph.Op> methods\n     \n     See also:\n     \n     <Graph.Op>\n\n  */\n  ForceDirected3D.Op = new Class( {\n\n    Implements: Graph.Op\n\n  });\n\n  /*\n    ForceDirected3D.Plot\n    \n    Custom extension of <Graph.Plot>.\n  \n    Extends:\n  \n    All <Graph.Plot> methods\n    \n    See also:\n    \n    <Graph.Plot>\n  \n  */\n  ForceDirected3D.Plot = new Class( {\n\n    Implements: Graph.Plot3D\n\n  });\n\n  /*\n    ForceDirected3D.Label\n    \n    Custom extension of <Graph.Label>. \n    Contains custom <Graph.Label.SVG>, <Graph.Label.HTML> and <Graph.Label.Native> extensions.\n  \n    Extends:\n  \n    All <Graph.Label> methods and subclasses.\n  \n    See also:\n  \n    <Graph.Label>, <Graph.Label.Native>, <Graph.Label.HTML>, <Graph.Label.SVG>.\n  \n  */\n  ForceDirected3D.Label = {};\n\n  /*\n     ForceDirected3D.Label.Native\n     \n     Custom extension of <Graph.Label.Native>.\n\n     Extends:\n\n     All <Graph.Label.Native> methods\n\n     See also:\n\n     <Graph.Label.Native>\n\n  */\n  ForceDirected3D.Label.Native = new Class( {\n    Implements: Graph.Label.Native\n  });\n\n  /*\n    ForceDirected3D.Label.SVG\n    \n    Custom extension of <Graph.Label.SVG>.\n  \n    Extends:\n  \n    All <Graph.Label.SVG> methods\n  \n    See also:\n  \n    <Graph.Label.SVG>\n  \n  */\n  ForceDirected3D.Label.SVG = new Class( {\n    Implements: Graph.Label.SVG,\n\n    initialize: function(viz) {\n      this.viz = viz;\n    },\n\n    /* \n       placeLabel\n\n       Overrides abstract method placeLabel in <Graph.Label>.\n\n       Parameters:\n\n       tag - A DOM label element.\n       node - A <Graph.Node>.\n       controller - A configuration/controller object passed to the visualization.\n      \n     */\n    placeLabel: function(tag, node, controller) {\n      var pos = node.pos.getc(true), \n          canvas = this.viz.canvas,\n          ox = canvas.translateOffsetX,\n          oy = canvas.translateOffsetY,\n          sx = canvas.scaleOffsetX,\n          sy = canvas.scaleOffsetY,\n          radius = canvas.getSize();\n      var labelPos = {\n        x: Math.round(pos.x * sx + ox + radius.width / 2),\n        y: Math.round(pos.y * sy + oy + radius.height / 2)\n      };\n      tag.setAttribute('x', labelPos.x);\n      tag.setAttribute('y', labelPos.y);\n\n      controller.onPlaceLabel(tag, node);\n    }\n  });\n\n  /*\n     ForceDirected3D.Label.HTML\n     \n     Custom extension of <Graph.Label.HTML>.\n\n     Extends:\n\n     All <Graph.Label.HTML> methods.\n\n     See also:\n\n     <Graph.Label.HTML>\n\n  */\n  ForceDirected3D.Label.HTML = new Class( {\n    Implements: Graph.Label.HTML,\n\n    initialize: function(viz) {\n      this.viz = viz;\n    },\n    /* \n       placeLabel\n\n       Overrides abstract method placeLabel in <Graph.Plot>.\n\n       Parameters:\n\n       tag - A DOM label element.\n       node - A <Graph.Node>.\n       controller - A configuration/controller object passed to the visualization.\n      \n     */\n    placeLabel: function(tag, node, controller) {\n      var pos = node.pos.getc(true), \n          canvas = this.viz.canvas,\n          ox = canvas.translateOffsetX,\n          oy = canvas.translateOffsetY,\n          sx = canvas.scaleOffsetX,\n          sy = canvas.scaleOffsetY,\n          radius = canvas.getSize();\n      var labelPos = {\n        x: Math.round(pos.x * sx + ox + radius.width / 2),\n        y: Math.round(pos.y * sy + oy + radius.height / 2)\n      };\n      var style = tag.style;\n      style.left = labelPos.x + 'px';\n      style.top = labelPos.y + 'px';\n      style.display = this.fitsInCanvas(labelPos, canvas) ? '' : 'none';\n\n      controller.onPlaceLabel(tag, node);\n    }\n  });\n\n  /*\n    ForceDirected3D.Plot.NodeTypes\n\n    This class contains a list of <Graph.Node> built-in types. \n    Node types implemented are 'none', 'circle', 'triangle', 'rectangle', 'star', 'ellipse' and 'square'.\n\n    You can add your custom node types, customizing your visualization to the extreme.\n\n    Example:\n\n    (start code js)\n      ForceDirected3D.Plot.NodeTypes.implement({\n        'mySpecialType': {\n          'render': function(node, canvas) {\n            //print your custom node to canvas\n          },\n          //optional\n          'contains': function(node, pos) {\n            //return true if pos is inside the node or false otherwise\n          }\n        }\n      });\n    (end code)\n\n  */\n  ForceDirected3D.Plot.NodeTypes = new Class({\n    'none': {\n      'render': $.empty,\n      'contains': $.lambda(false)\n    },\n    'circle': {\n      'render': function(node, canvas){\n        var pos = node.pos.getc(true), \n            dim = node.getData('dim');\n        this.nodeHelper.circle.render('fill', pos, dim, canvas);\n      },\n      'contains': function(node, pos){\n        var npos = node.pos.getc(true), \n            dim = node.getData('dim');\n        return this.nodeHelper.circle.contains(npos, pos, dim);\n      }\n    },\n    'ellipse': {\n      'render': function(node, canvas){\n        var pos = node.pos.getc(true), \n            width = node.getData('width'), \n            height = node.getData('height');\n        this.nodeHelper.ellipse.render('fill', pos, width, height, canvas);\n        },\n      'contains': function(node, pos){\n        var npos = node.pos.getc(true), \n            width = node.getData('width'), \n            height = node.getData('height');\n        return this.nodeHelper.ellipse.contains(npos, pos, width, height);\n      }\n    },\n    'square': {\n      'render': function(node, canvas){\n        var pos = node.pos.getc(true), \n            dim = node.getData('dim');\n        this.nodeHelper.square.render('fill', pos, dim, canvas);\n      },\n      'contains': function(node, pos){\n        var npos = node.pos.getc(true), \n            dim = node.getData('dim');\n        return this.nodeHelper.square.contains(npos, pos, dim);\n      }\n    },\n    'rectangle': {\n      'render': function(node, canvas){\n        var pos = node.pos.getc(true), \n            width = node.getData('width'), \n            height = node.getData('height');\n        this.nodeHelper.rectangle.render('fill', pos, width, height, canvas);\n      },\n      'contains': function(node, pos){\n        var npos = node.pos.getc(true), \n            width = node.getData('width'), \n            height = node.getData('height');\n        return this.nodeHelper.rectangle.contains(npos, pos, width, height);\n      }\n    },\n    'triangle': {\n      'render': function(node, canvas){\n        var pos = node.pos.getc(true), \n            dim = node.getData('dim');\n        this.nodeHelper.triangle.render('fill', pos, dim, canvas);\n      },\n      'contains': function(node, pos) {\n        var npos = node.pos.getc(true), \n            dim = node.getData('dim');\n        return this.nodeHelper.triangle.contains(npos, pos, dim);\n      }\n    },\n    'star': {\n      'render': function(node, canvas){\n        var pos = node.pos.getc(true),\n            dim = node.getData('dim');\n        this.nodeHelper.star.render('fill', pos, dim, canvas);\n      },\n      'contains': function(node, pos) {\n        var npos = node.pos.getc(true),\n            dim = node.getData('dim');\n        return this.nodeHelper.star.contains(npos, pos, dim);\n      }\n    }\n  });\n\n  /*\n    ForceDirected3D.Plot.EdgeTypes\n  \n    This class contains a list of <Graph.Adjacence> built-in types. \n    Edge types implemented are 'none', 'line' and 'arrow'.\n  \n    You can add your custom edge types, customizing your visualization to the extreme.\n  \n    Example:\n  \n    (start code js)\n      ForceDirected3D.Plot.EdgeTypes.implement({\n        'mySpecialType': {\n          'render': function(adj, canvas) {\n            //print your custom edge to canvas\n          },\n          //optional\n          'contains': function(adj, pos) {\n            //return true if pos is inside the arc or false otherwise\n          }\n        }\n      });\n    (end code)\n  \n  */\n  ForceDirected3D.Plot.EdgeTypes = new Class({\n    'none': $.empty,\n    'line': {\n      'render': function(adj, canvas) {\n        var from = adj.nodeFrom.pos.getc(true),\n            to = adj.nodeTo.pos.getc(true);\n        this.edgeHelper.line.render(from, to, canvas);\n      },\n      'contains': function(adj, pos) {\n        var from = adj.nodeFrom.pos.getc(true),\n            to = adj.nodeTo.pos.getc(true);\n        return this.edgeHelper.line.contains(from, to, pos, this.edge.epsilon);\n      }\n    },\n    'arrow': {\n      'render': function(adj, canvas) {\n        var from = adj.nodeFrom.pos.getc(true),\n            to = adj.nodeTo.pos.getc(true),\n            dim = adj.getData('dim'),\n            direction = adj.data.$direction,\n            inv = (direction && direction.length>1 && direction[0] != adj.nodeFrom.id);\n        this.edgeHelper.arrow.render(from, to, dim, inv, canvas);\n      },\n      'contains': function(adj, pos) {\n        var from = adj.nodeFrom.pos.getc(true),\n            to = adj.nodeTo.pos.getc(true);\n        return this.edgeHelper.arrow.contains(from, to, pos, this.edge.epsilon);\n      }\n    }\n  });\n\n})($jit.ForceDirected3D);\n\n// START METAMAPS CODE\nexport default $jit\n// END METAMAPS CODE\n\n\n\n// WEBPACK FOOTER //\n// 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Severity: Minor
Found in app/assets/javascripts/metamaps.secret.bundle.js by fixme

TODO found
Open

    eval("/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n'use strict';\n\nvar ReactRef = __webpack_require__(233);\nvar ReactInstrumentation = __webpack_require__(235);\n\nvar warning = __webpack_require__(183);\n\n/**\n * Helper to call ReactRef.attachRefs with this composite component, split out\n * to avoid allocations in the transaction mount-ready queue.\n */\nfunction attachRefs() {\n  ReactRef.attachRefs(this, this._currentElement);\n}\n\nvar ReactReconciler = {\n\n  /**\n   * Initializes the component, renders markup, and registers event listeners.\n   *\n   * @param {ReactComponent} internalInstance\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {?object} the containing host component instance\n   * @param {?object} info about the host container\n   * @return {?string} Rendered markup to be inserted into the DOM.\n   * @final\n   * @internal\n   */\n  mountComponent: function (internalInstance, transaction, hostParent, hostContainerInfo, context, parentDebugID // 0 in production and for roots\n  ) {\n    if (true) {\n      if (internalInstance._debugID !== 0) {\n        ReactInstrumentation.debugTool.onBeforeMountComponent(internalInstance._debugID, internalInstance._currentElement, parentDebugID);\n      }\n    }\n    var markup = internalInstance.mountComponent(transaction, hostParent, hostContainerInfo, context, parentDebugID);\n    if (internalInstance._currentElement && internalInstance._currentElement.ref != null) {\n      transaction.getReactMountReady().enqueue(attachRefs, internalInstance);\n    }\n    if (true) {\n      if (internalInstance._debugID !== 0) {\n        ReactInstrumentation.debugTool.onMountComponent(internalInstance._debugID);\n      }\n    }\n    return markup;\n  },\n\n  /**\n   * Returns a value that can be passed to\n   * ReactComponentEnvironment.replaceNodeWithMarkup.\n   */\n  getHostNode: function (internalInstance) {\n    return internalInstance.getHostNode();\n  },\n\n  /**\n   * Releases any resources allocated by `mountComponent`.\n   *\n   * @final\n   * @internal\n   */\n  unmountComponent: function (internalInstance, safely) {\n    if (true) {\n      if (internalInstance._debugID !== 0) {\n        ReactInstrumentation.debugTool.onBeforeUnmountComponent(internalInstance._debugID);\n      }\n    }\n    ReactRef.detachRefs(internalInstance, internalInstance._currentElement);\n    internalInstance.unmountComponent(safely);\n    if (true) {\n      if (internalInstance._debugID !== 0) {\n        ReactInstrumentation.debugTool.onUnmountComponent(internalInstance._debugID);\n      }\n    }\n  },\n\n  /**\n   * Update a component using a new element.\n   *\n   * @param {ReactComponent} internalInstance\n   * @param {ReactElement} nextElement\n   * @param {ReactReconcileTransaction} transaction\n   * @param {object} context\n   * @internal\n   */\n  receiveComponent: function (internalInstance, nextElement, transaction, context) {\n    var prevElement = internalInstance._currentElement;\n\n    if (nextElement === prevElement && context === internalInstance._context) {\n      // Since elements are immutable after the owner is rendered,\n      // we can do a cheap identity compare here to determine if this is a\n      // superfluous reconcile. It's possible for state to be mutable but such\n      // change should trigger an update of the owner which would recreate\n      // the element. We explicitly check for the existence of an owner since\n      // it's possible for an element created outside a composite to be\n      // deeply mutated and reused.\n\n      // TODO: Bailing out early is just a perf optimization right?\n      // TODO: Removing the return statement should affect correctness?\n      return;\n    }\n\n    if (true) {\n      if (internalInstance._debugID !== 0) {\n        ReactInstrumentation.debugTool.onBeforeUpdateComponent(internalInstance._debugID, nextElement);\n      }\n    }\n\n    var refsChanged = ReactRef.shouldUpdateRefs(prevElement, nextElement);\n\n    if (refsChanged) {\n      ReactRef.detachRefs(internalInstance, prevElement);\n    }\n\n    internalInstance.receiveComponent(nextElement, transaction, context);\n\n    if (refsChanged && internalInstance._currentElement && internalInstance._currentElement.ref != null) {\n      transaction.getReactMountReady().enqueue(attachRefs, internalInstance);\n    }\n\n    if (true) {\n      if (internalInstance._debugID !== 0) {\n        ReactInstrumentation.debugTool.onUpdateComponent(internalInstance._debugID);\n      }\n    }\n  },\n\n  /**\n   * Flush any dirty changes in a component.\n   *\n   * @param {ReactComponent} internalInstance\n   * @param {ReactReconcileTransaction} transaction\n   * @internal\n   */\n  performUpdateIfNecessary: function (internalInstance, transaction, updateBatchNumber) {\n    if (internalInstance._updateBatchNumber !== updateBatchNumber) {\n      // The component's enqueued batch number should always be the current\n      // batch or the following one.\n       true ? warning(internalInstance._updateBatchNumber == null || internalInstance._updateBatchNumber === updateBatchNumber + 1, 'performUpdateIfNecessary: Unexpected batch number (current %s, ' + 'pending %s)', updateBatchNumber, internalInstance._updateBatchNumber) : void 0;\n      return;\n    }\n    if (true) {\n      if (internalInstance._debugID !== 0) {\n        ReactInstrumentation.debugTool.onBeforeUpdateComponent(internalInstance._debugID, internalInstance._currentElement);\n      }\n    }\n    internalInstance.performUpdateIfNecessary(transaction);\n    if (true) {\n      if (internalInstance._debugID !== 0) {\n        ReactInstrumentation.debugTool.onUpdateComponent(internalInstance._debugID);\n      }\n    }\n  }\n\n};\n\nmodule.exports = ReactReconciler;//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"232.js","sources":["/home/ubuntu/workspace/node_modules/react-dom/lib/ReactReconciler.js"],"sourcesContent":["/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n'use strict';\n\nvar ReactRef = require('./ReactRef');\nvar ReactInstrumentation = require('./ReactInstrumentation');\n\nvar warning = require('fbjs/lib/warning');\n\n/**\n * Helper to call ReactRef.attachRefs with this composite component, split out\n * to avoid allocations in the transaction mount-ready queue.\n */\nfunction attachRefs() {\n  ReactRef.attachRefs(this, this._currentElement);\n}\n\nvar ReactReconciler = {\n\n  /**\n   * Initializes the component, renders markup, and registers event listeners.\n   *\n   * @param {ReactComponent} internalInstance\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {?object} the containing host component instance\n   * @param {?object} info about the host container\n   * @return {?string} Rendered markup to be inserted into the DOM.\n   * @final\n   * @internal\n   */\n  mountComponent: function (internalInstance, transaction, hostParent, hostContainerInfo, context, parentDebugID // 0 in production and for roots\n  ) {\n    if (process.env.NODE_ENV !== 'production') {\n      if (internalInstance._debugID !== 0) {\n        ReactInstrumentation.debugTool.onBeforeMountComponent(internalInstance._debugID, internalInstance._currentElement, parentDebugID);\n      }\n    }\n    var markup = internalInstance.mountComponent(transaction, hostParent, hostContainerInfo, context, parentDebugID);\n    if (internalInstance._currentElement && internalInstance._currentElement.ref != null) {\n      transaction.getReactMountReady().enqueue(attachRefs, internalInstance);\n    }\n    if (process.env.NODE_ENV !== 'production') {\n      if (internalInstance._debugID !== 0) {\n        ReactInstrumentation.debugTool.onMountComponent(internalInstance._debugID);\n      }\n    }\n    return markup;\n  },\n\n  /**\n   * Returns a value that can be passed to\n   * ReactComponentEnvironment.replaceNodeWithMarkup.\n   */\n  getHostNode: function (internalInstance) {\n    return internalInstance.getHostNode();\n  },\n\n  /**\n   * Releases any resources allocated by `mountComponent`.\n   *\n   * @final\n   * @internal\n   */\n  unmountComponent: function (internalInstance, safely) {\n    if (process.env.NODE_ENV !== 'production') {\n      if (internalInstance._debugID !== 0) {\n        ReactInstrumentation.debugTool.onBeforeUnmountComponent(internalInstance._debugID);\n      }\n    }\n    ReactRef.detachRefs(internalInstance, internalInstance._currentElement);\n    internalInstance.unmountComponent(safely);\n    if (process.env.NODE_ENV !== 'production') {\n      if (internalInstance._debugID !== 0) {\n        ReactInstrumentation.debugTool.onUnmountComponent(internalInstance._debugID);\n      }\n    }\n  },\n\n  /**\n   * Update a component using a new element.\n   *\n   * @param {ReactComponent} internalInstance\n   * @param {ReactElement} nextElement\n   * @param {ReactReconcileTransaction} transaction\n   * @param {object} context\n   * @internal\n   */\n  receiveComponent: function (internalInstance, nextElement, transaction, context) {\n    var prevElement = internalInstance._currentElement;\n\n    if (nextElement === prevElement && context === internalInstance._context) {\n      // Since elements are immutable after the owner is rendered,\n      // we can do a cheap identity compare here to determine if this is a\n      // superfluous reconcile. It's possible for state to be mutable but such\n      // change should trigger an update of the owner which would recreate\n      // the element. We explicitly check for the existence of an owner since\n      // it's possible for an element created outside a composite to be\n      // deeply mutated and reused.\n\n      // TODO: Bailing out early is just a perf optimization right?\n      // TODO: Removing the return statement should affect correctness?\n      return;\n    }\n\n    if (process.env.NODE_ENV !== 'production') {\n      if (internalInstance._debugID !== 0) {\n        ReactInstrumentation.debugTool.onBeforeUpdateComponent(internalInstance._debugID, nextElement);\n      }\n    }\n\n    var refsChanged = ReactRef.shouldUpdateRefs(prevElement, nextElement);\n\n    if (refsChanged) {\n      ReactRef.detachRefs(internalInstance, prevElement);\n    }\n\n    internalInstance.receiveComponent(nextElement, transaction, context);\n\n    if (refsChanged && internalInstance._currentElement && internalInstance._currentElement.ref != null) {\n      transaction.getReactMountReady().enqueue(attachRefs, internalInstance);\n    }\n\n    if (process.env.NODE_ENV !== 'production') {\n      if (internalInstance._debugID !== 0) {\n        ReactInstrumentation.debugTool.onUpdateComponent(internalInstance._debugID);\n      }\n    }\n  },\n\n  /**\n   * Flush any dirty changes in a component.\n   *\n   * @param {ReactComponent} internalInstance\n   * @param {ReactReconcileTransaction} transaction\n   * @internal\n   */\n  performUpdateIfNecessary: function (internalInstance, transaction, updateBatchNumber) {\n    if (internalInstance._updateBatchNumber !== updateBatchNumber) {\n      // The component's enqueued batch number should always be the current\n      // batch or the following one.\n      process.env.NODE_ENV !== 'production' ? warning(internalInstance._updateBatchNumber == null || internalInstance._updateBatchNumber === updateBatchNumber + 1, 'performUpdateIfNecessary: Unexpected batch number (current %s, ' + 'pending %s)', updateBatchNumber, internalInstance._updateBatchNumber) : void 0;\n      return;\n    }\n    if (process.env.NODE_ENV !== 'production') {\n      if (internalInstance._debugID !== 0) {\n        ReactInstrumentation.debugTool.onBeforeUpdateComponent(internalInstance._debugID, internalInstance._currentElement);\n      }\n    }\n    internalInstance.performUpdateIfNecessary(transaction);\n    if (process.env.NODE_ENV !== 'production') {\n      if (internalInstance._debugID !== 0) {\n        ReactInstrumentation.debugTool.onUpdateComponent(internalInstance._debugID);\n      }\n    }\n  }\n\n};\n\nmodule.exports = ReactReconciler;\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/react-dom/lib/ReactReconciler.js\n// module id = 232\n// module chunks = 0"],"mappings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sourceRoot":""}");
Severity: Minor
Found in app/assets/javascripts/metamaps.secret.bundle.js by fixme

TODO found
Open

    eval("/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n/* global hasOwnProperty:true */\n\n'use strict';\n\nvar _prodInvariant = __webpack_require__(208),\n    _assign = __webpack_require__(176);\n\nvar AutoFocusUtils = __webpack_require__(266);\nvar CSSPropertyOperations = __webpack_require__(268);\nvar DOMLazyTree = __webpack_require__(254);\nvar DOMNamespaces = __webpack_require__(255);\nvar DOMProperty = __webpack_require__(209);\nvar DOMPropertyOperations = __webpack_require__(276);\nvar EventPluginHub = __webpack_require__(215);\nvar EventPluginRegistry = __webpack_require__(216);\nvar ReactBrowserEventEmitter = __webpack_require__(278);\nvar ReactDOMComponentFlags = __webpack_require__(210);\nvar ReactDOMComponentTree = __webpack_require__(207);\nvar ReactDOMInput = __webpack_require__(281);\nvar ReactDOMOption = __webpack_require__(284);\nvar ReactDOMSelect = __webpack_require__(285);\nvar ReactDOMTextarea = __webpack_require__(286);\nvar ReactInstrumentation = __webpack_require__(235);\nvar ReactMultiChild = __webpack_require__(287);\nvar ReactServerRenderingTransaction = __webpack_require__(306);\n\nvar emptyFunction = __webpack_require__(184);\nvar escapeTextContentForBrowser = __webpack_require__(259);\nvar invariant = __webpack_require__(180);\nvar isEventSupported = __webpack_require__(243);\nvar shallowEqual = __webpack_require__(296);\nvar validateDOMNesting = __webpack_require__(309);\nvar warning = __webpack_require__(183);\n\nvar Flags = ReactDOMComponentFlags;\nvar deleteListener = EventPluginHub.deleteListener;\nvar getNode = ReactDOMComponentTree.getNodeFromInstance;\nvar listenTo = ReactBrowserEventEmitter.listenTo;\nvar registrationNameModules = EventPluginRegistry.registrationNameModules;\n\n// For quickly matching children type, to test if can be treated as content.\nvar CONTENT_TYPES = { 'string': true, 'number': true };\n\nvar STYLE = 'style';\nvar HTML = '__html';\nvar RESERVED_PROPS = {\n  children: null,\n  dangerouslySetInnerHTML: null,\n  suppressContentEditableWarning: null\n};\n\n// Node type for document fragments (Node.DOCUMENT_FRAGMENT_NODE).\nvar DOC_FRAGMENT_TYPE = 11;\n\nfunction getDeclarationErrorAddendum(internalInstance) {\n  if (internalInstance) {\n    var owner = internalInstance._currentElement._owner || null;\n    if (owner) {\n      var name = owner.getName();\n      if (name) {\n        return ' This DOM node was rendered by `' + name + '`.';\n      }\n    }\n  }\n  return '';\n}\n\nfunction friendlyStringify(obj) {\n  if (typeof obj === 'object') {\n    if (Array.isArray(obj)) {\n      return '[' + obj.map(friendlyStringify).join(', ') + ']';\n    } else {\n      var pairs = [];\n      for (var key in obj) {\n        if (Object.prototype.hasOwnProperty.call(obj, key)) {\n          var keyEscaped = /^[a-z$_][\\w$_]*$/i.test(key) ? key : JSON.stringify(key);\n          pairs.push(keyEscaped + ': ' + friendlyStringify(obj[key]));\n        }\n      }\n      return '{' + pairs.join(', ') + '}';\n    }\n  } else if (typeof obj === 'string') {\n    return JSON.stringify(obj);\n  } else if (typeof obj === 'function') {\n    return '[function object]';\n  }\n  // Differs from JSON.stringify in that undefined because undefined and that\n  // inf and nan don't become null\n  return String(obj);\n}\n\nvar styleMutationWarning = {};\n\nfunction checkAndWarnForMutatedStyle(style1, style2, component) {\n  if (style1 == null || style2 == null) {\n    return;\n  }\n  if (shallowEqual(style1, style2)) {\n    return;\n  }\n\n  var componentName = component._tag;\n  var owner = component._currentElement._owner;\n  var ownerName;\n  if (owner) {\n    ownerName = owner.getName();\n  }\n\n  var hash = ownerName + '|' + componentName;\n\n  if (styleMutationWarning.hasOwnProperty(hash)) {\n    return;\n  }\n\n  styleMutationWarning[hash] = true;\n\n   true ? warning(false, '`%s` was passed a style object that has previously been mutated. ' + 'Mutating `style` is deprecated. Consider cloning it beforehand. Check ' + 'the `render` %s. Previous style: %s. Mutated style: %s.', componentName, owner ? 'of `' + ownerName + '`' : 'using <' + componentName + '>', friendlyStringify(style1), friendlyStringify(style2)) : void 0;\n}\n\n/**\n * @param {object} component\n * @param {?object} props\n */\nfunction assertValidProps(component, props) {\n  if (!props) {\n    return;\n  }\n  // Note the use of `==` which checks for null or undefined.\n  if (voidElementTags[component._tag]) {\n    !(props.children == null && props.dangerouslySetInnerHTML == null) ?  true ? invariant(false, '%s is a void element tag and must neither have `children` nor use `dangerouslySetInnerHTML`.%s', component._tag, component._currentElement._owner ? ' Check the render method of ' + component._currentElement._owner.getName() + '.' : '') : _prodInvariant('137', component._tag, component._currentElement._owner ? ' Check the render method of ' + component._currentElement._owner.getName() + '.' : '') : void 0;\n  }\n  if (props.dangerouslySetInnerHTML != null) {\n    !(props.children == null) ?  true ? invariant(false, 'Can only set one of `children` or `props.dangerouslySetInnerHTML`.') : _prodInvariant('60') : void 0;\n    !(typeof props.dangerouslySetInnerHTML === 'object' && HTML in props.dangerouslySetInnerHTML) ?  true ? invariant(false, '`props.dangerouslySetInnerHTML` must be in the form `{__html: ...}`. Please visit https://fb.me/react-invariant-dangerously-set-inner-html for more information.') : _prodInvariant('61') : void 0;\n  }\n  if (true) {\n     true ? warning(props.innerHTML == null, 'Directly setting property `innerHTML` is not permitted. ' + 'For more information, lookup documentation on `dangerouslySetInnerHTML`.') : void 0;\n     true ? warning(props.suppressContentEditableWarning || !props.contentEditable || props.children == null, 'A component is `contentEditable` and contains `children` managed by ' + 'React. It is now your responsibility to guarantee that none of ' + 'those nodes are unexpectedly modified or duplicated. This is ' + 'probably not intentional.') : void 0;\n     true ? warning(props.onFocusIn == null && props.onFocusOut == null, 'React uses onFocus and onBlur instead of onFocusIn and onFocusOut. ' + 'All React events are normalized to bubble, so onFocusIn and onFocusOut ' + 'are not needed/supported by React.') : void 0;\n  }\n  !(props.style == null || typeof props.style === 'object') ?  true ? invariant(false, 'The `style` prop expects a mapping from style properties to values, not a string. For example, style={{marginRight: spacing + \\'em\\'}} when using JSX.%s', getDeclarationErrorAddendum(component)) : _prodInvariant('62', getDeclarationErrorAddendum(component)) : void 0;\n}\n\nfunction enqueuePutListener(inst, registrationName, listener, transaction) {\n  if (transaction instanceof ReactServerRenderingTransaction) {\n    return;\n  }\n  if (true) {\n    // IE8 has no API for event capturing and the `onScroll` event doesn't\n    // bubble.\n     true ? warning(registrationName !== 'onScroll' || isEventSupported('scroll', true), 'This browser doesn\\'t support the `onScroll` event') : void 0;\n  }\n  var containerInfo = inst._hostContainerInfo;\n  var isDocumentFragment = containerInfo._node && containerInfo._node.nodeType === DOC_FRAGMENT_TYPE;\n  var doc = isDocumentFragment ? containerInfo._node : containerInfo._ownerDocument;\n  listenTo(registrationName, doc);\n  transaction.getReactMountReady().enqueue(putListener, {\n    inst: inst,\n    registrationName: registrationName,\n    listener: listener\n  });\n}\n\nfunction putListener() {\n  var listenerToPut = this;\n  EventPluginHub.putListener(listenerToPut.inst, listenerToPut.registrationName, listenerToPut.listener);\n}\n\nfunction inputPostMount() {\n  var inst = this;\n  ReactDOMInput.postMountWrapper(inst);\n}\n\nfunction textareaPostMount() {\n  var inst = this;\n  ReactDOMTextarea.postMountWrapper(inst);\n}\n\nfunction optionPostMount() {\n  var inst = this;\n  ReactDOMOption.postMountWrapper(inst);\n}\n\nvar setAndValidateContentChildDev = emptyFunction;\nif (true) {\n  setAndValidateContentChildDev = function (content) {\n    var hasExistingContent = this._contentDebugID != null;\n    var debugID = this._debugID;\n    // This ID represents the inlined child that has no backing instance:\n    var contentDebugID = -debugID;\n\n    if (content == null) {\n      if (hasExistingContent) {\n        ReactInstrumentation.debugTool.onUnmountComponent(this._contentDebugID);\n      }\n      this._contentDebugID = null;\n      return;\n    }\n\n    validateDOMNesting(null, String(content), this, this._ancestorInfo);\n    this._contentDebugID = contentDebugID;\n    if (hasExistingContent) {\n      ReactInstrumentation.debugTool.onBeforeUpdateComponent(contentDebugID, content);\n      ReactInstrumentation.debugTool.onUpdateComponent(contentDebugID);\n    } else {\n      ReactInstrumentation.debugTool.onBeforeMountComponent(contentDebugID, content, debugID);\n      ReactInstrumentation.debugTool.onMountComponent(contentDebugID);\n      ReactInstrumentation.debugTool.onSetChildren(debugID, [contentDebugID]);\n    }\n  };\n}\n\n// There are so many media events, it makes sense to just\n// maintain a list rather than create a `trapBubbledEvent` for each\nvar mediaEvents = {\n  topAbort: 'abort',\n  topCanPlay: 'canplay',\n  topCanPlayThrough: 'canplaythrough',\n  topDurationChange: 'durationchange',\n  topEmptied: 'emptied',\n  topEncrypted: 'encrypted',\n  topEnded: 'ended',\n  topError: 'error',\n  topLoadedData: 'loadeddata',\n  topLoadedMetadata: 'loadedmetadata',\n  topLoadStart: 'loadstart',\n  topPause: 'pause',\n  topPlay: 'play',\n  topPlaying: 'playing',\n  topProgress: 'progress',\n  topRateChange: 'ratechange',\n  topSeeked: 'seeked',\n  topSeeking: 'seeking',\n  topStalled: 'stalled',\n  topSuspend: 'suspend',\n  topTimeUpdate: 'timeupdate',\n  topVolumeChange: 'volumechange',\n  topWaiting: 'waiting'\n};\n\nfunction trapBubbledEventsLocal() {\n  var inst = this;\n  // If a component renders to null or if another component fatals and causes\n  // the state of the tree to be corrupted, `node` here can be null.\n  !inst._rootNodeID ?  true ? invariant(false, 'Must be mounted to trap events') : _prodInvariant('63') : void 0;\n  var node = getNode(inst);\n  !node ?  true ? invariant(false, 'trapBubbledEvent(...): Requires node to be rendered.') : _prodInvariant('64') : void 0;\n\n  switch (inst._tag) {\n    case 'iframe':\n    case 'object':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topLoad', 'load', node)];\n      break;\n    case 'video':\n    case 'audio':\n\n      inst._wrapperState.listeners = [];\n      // Create listener for each media event\n      for (var event in mediaEvents) {\n        if (mediaEvents.hasOwnProperty(event)) {\n          inst._wrapperState.listeners.push(ReactBrowserEventEmitter.trapBubbledEvent(event, mediaEvents[event], node));\n        }\n      }\n      break;\n    case 'source':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topError', 'error', node)];\n      break;\n    case 'img':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topError', 'error', node), ReactBrowserEventEmitter.trapBubbledEvent('topLoad', 'load', node)];\n      break;\n    case 'form':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topReset', 'reset', node), ReactBrowserEventEmitter.trapBubbledEvent('topSubmit', 'submit', node)];\n      break;\n    case 'input':\n    case 'select':\n    case 'textarea':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topInvalid', 'invalid', node)];\n      break;\n  }\n}\n\nfunction postUpdateSelectWrapper() {\n  ReactDOMSelect.postUpdateWrapper(this);\n}\n\n// For HTML, certain tags should omit their close tag. We keep a whitelist for\n// those special-case tags.\n\nvar omittedCloseTags = {\n  'area': true,\n  'base': true,\n  'br': true,\n  'col': true,\n  'embed': true,\n  'hr': true,\n  'img': true,\n  'input': true,\n  'keygen': true,\n  'link': true,\n  'meta': true,\n  'param': true,\n  'source': true,\n  'track': true,\n  'wbr': true\n};\n\nvar newlineEatingTags = {\n  'listing': true,\n  'pre': true,\n  'textarea': true\n};\n\n// For HTML, certain tags cannot have children. This has the same purpose as\n// `omittedCloseTags` except that `menuitem` should still have its closing tag.\n\nvar voidElementTags = _assign({\n  'menuitem': true\n}, omittedCloseTags);\n\n// We accept any tag to be rendered but since this gets injected into arbitrary\n// HTML, we want to make sure that it's a safe tag.\n// http://www.w3.org/TR/REC-xml/#NT-Name\n\nvar VALID_TAG_REGEX = /^[a-zA-Z][a-zA-Z:_\\.\\-\\d]*$/; // Simplified subset\nvar validatedTagCache = {};\nvar hasOwnProperty = {}.hasOwnProperty;\n\nfunction validateDangerousTag(tag) {\n  if (!hasOwnProperty.call(validatedTagCache, tag)) {\n    !VALID_TAG_REGEX.test(tag) ?  true ? invariant(false, 'Invalid tag: %s', tag) : _prodInvariant('65', tag) : void 0;\n    validatedTagCache[tag] = true;\n  }\n}\n\nfunction isCustomComponent(tagName, props) {\n  return tagName.indexOf('-') >= 0 || props.is != null;\n}\n\nvar globalIdCounter = 1;\n\n/**\n * Creates a new React class that is idempotent and capable of containing other\n * React components. It accepts event listeners and DOM properties that are\n * valid according to `DOMProperty`.\n *\n *  - Event listeners: `onClick`, `onMouseDown`, etc.\n *  - DOM properties: `className`, `name`, `title`, etc.\n *\n * The `style` property functions differently from the DOM API. It accepts an\n * object mapping of style properties to values.\n *\n * @constructor ReactDOMComponent\n * @extends ReactMultiChild\n */\nfunction ReactDOMComponent(element) {\n  var tag = element.type;\n  validateDangerousTag(tag);\n  this._currentElement = element;\n  this._tag = tag.toLowerCase();\n  this._namespaceURI = null;\n  this._renderedChildren = null;\n  this._previousStyle = null;\n  this._previousStyleCopy = null;\n  this._hostNode = null;\n  this._hostParent = null;\n  this._rootNodeID = 0;\n  this._domID = 0;\n  this._hostContainerInfo = null;\n  this._wrapperState = null;\n  this._topLevelWrapper = null;\n  this._flags = 0;\n  if (true) {\n    this._ancestorInfo = null;\n    setAndValidateContentChildDev.call(this, null);\n  }\n}\n\nReactDOMComponent.displayName = 'ReactDOMComponent';\n\nReactDOMComponent.Mixin = {\n\n  /**\n   * Generates root tag markup then recurses. This method has side effects and\n   * is not idempotent.\n   *\n   * @internal\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {?ReactDOMComponent} the parent component instance\n   * @param {?object} info about the host container\n   * @param {object} context\n   * @return {string} The computed markup.\n   */\n  mountComponent: function (transaction, hostParent, hostContainerInfo, context) {\n    this._rootNodeID = globalIdCounter++;\n    this._domID = hostContainerInfo._idCounter++;\n    this._hostParent = hostParent;\n    this._hostContainerInfo = hostContainerInfo;\n\n    var props = this._currentElement.props;\n\n    switch (this._tag) {\n      case 'audio':\n      case 'form':\n      case 'iframe':\n      case 'img':\n      case 'link':\n      case 'object':\n      case 'source':\n      case 'video':\n        this._wrapperState = {\n          listeners: null\n        };\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n      case 'input':\n        ReactDOMInput.mountWrapper(this, props, hostParent);\n        props = ReactDOMInput.getHostProps(this, props);\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n      case 'option':\n        ReactDOMOption.mountWrapper(this, props, hostParent);\n        props = ReactDOMOption.getHostProps(this, props);\n        break;\n      case 'select':\n        ReactDOMSelect.mountWrapper(this, props, hostParent);\n        props = ReactDOMSelect.getHostProps(this, props);\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n      case 'textarea':\n        ReactDOMTextarea.mountWrapper(this, props, hostParent);\n        props = ReactDOMTextarea.getHostProps(this, props);\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n    }\n\n    assertValidProps(this, props);\n\n    // We create tags in the namespace of their parent container, except HTML\n    // tags get no namespace.\n    var namespaceURI;\n    var parentTag;\n    if (hostParent != null) {\n      namespaceURI = hostParent._namespaceURI;\n      parentTag = hostParent._tag;\n    } else if (hostContainerInfo._tag) {\n      namespaceURI = hostContainerInfo._namespaceURI;\n      parentTag = hostContainerInfo._tag;\n    }\n    if (namespaceURI == null || namespaceURI === DOMNamespaces.svg && parentTag === 'foreignobject') {\n      namespaceURI = DOMNamespaces.html;\n    }\n    if (namespaceURI === DOMNamespaces.html) {\n      if (this._tag === 'svg') {\n        namespaceURI = DOMNamespaces.svg;\n      } else if (this._tag === 'math') {\n        namespaceURI = DOMNamespaces.mathml;\n      }\n    }\n    this._namespaceURI = namespaceURI;\n\n    if (true) {\n      var parentInfo;\n      if (hostParent != null) {\n        parentInfo = hostParent._ancestorInfo;\n      } else if (hostContainerInfo._tag) {\n        parentInfo = hostContainerInfo._ancestorInfo;\n      }\n      if (parentInfo) {\n        // parentInfo should always be present except for the top-level\n        // component when server rendering\n        validateDOMNesting(this._tag, null, this, parentInfo);\n      }\n      this._ancestorInfo = validateDOMNesting.updatedAncestorInfo(parentInfo, this._tag, this);\n    }\n\n    var mountImage;\n    if (transaction.useCreateElement) {\n      var ownerDocument = hostContainerInfo._ownerDocument;\n      var el;\n      if (namespaceURI === DOMNamespaces.html) {\n        if (this._tag === 'script') {\n          // Create the script via .innerHTML so its \"parser-inserted\" flag is\n          // set to true and it does not execute\n          var div = ownerDocument.createElement('div');\n          var type = this._currentElement.type;\n          div.innerHTML = '<' + type + '></' + type + '>';\n          el = div.removeChild(div.firstChild);\n        } else if (props.is) {\n          el = ownerDocument.createElement(this._currentElement.type, props.is);\n        } else {\n          // Separate else branch instead of using `props.is || undefined` above becuase of a Firefox bug.\n          // See discussion in https://github.com/facebook/react/pull/6896\n          // and discussion in https://bugzilla.mozilla.org/show_bug.cgi?id=1276240\n          el = ownerDocument.createElement(this._currentElement.type);\n        }\n      } else {\n        el = ownerDocument.createElementNS(namespaceURI, this._currentElement.type);\n      }\n      ReactDOMComponentTree.precacheNode(this, el);\n      this._flags |= Flags.hasCachedChildNodes;\n      if (!this._hostParent) {\n        DOMPropertyOperations.setAttributeForRoot(el);\n      }\n      this._updateDOMProperties(null, props, transaction);\n      var lazyTree = DOMLazyTree(el);\n      this._createInitialChildren(transaction, props, context, lazyTree);\n      mountImage = lazyTree;\n    } else {\n      var tagOpen = this._createOpenTagMarkupAndPutListeners(transaction, props);\n      var tagContent = this._createContentMarkup(transaction, props, context);\n      if (!tagContent && omittedCloseTags[this._tag]) {\n        mountImage = tagOpen + '/>';\n      } else {\n        mountImage = tagOpen + '>' + tagContent + '</' + this._currentElement.type + '>';\n      }\n    }\n\n    switch (this._tag) {\n      case 'input':\n        transaction.getReactMountReady().enqueue(inputPostMount, this);\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'textarea':\n        transaction.getReactMountReady().enqueue(textareaPostMount, this);\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'select':\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'button':\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'option':\n        transaction.getReactMountReady().enqueue(optionPostMount, this);\n        break;\n    }\n\n    return mountImage;\n  },\n\n  /**\n   * Creates markup for the open tag and all attributes.\n   *\n   * This method has side effects because events get registered.\n   *\n   * Iterating over object properties is faster than iterating over arrays.\n   * @see http://jsperf.com/obj-vs-arr-iteration\n   *\n   * @private\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {object} props\n   * @return {string} Markup of opening tag.\n   */\n  _createOpenTagMarkupAndPutListeners: function (transaction, props) {\n    var ret = '<' + this._currentElement.type;\n\n    for (var propKey in props) {\n      if (!props.hasOwnProperty(propKey)) {\n        continue;\n      }\n      var propValue = props[propKey];\n      if (propValue == null) {\n        continue;\n      }\n      if (registrationNameModules.hasOwnProperty(propKey)) {\n        if (propValue) {\n          enqueuePutListener(this, propKey, propValue, transaction);\n        }\n      } else {\n        if (propKey === STYLE) {\n          if (propValue) {\n            if (true) {\n              // See `_updateDOMProperties`. style block\n              this._previousStyle = propValue;\n            }\n            propValue = this._previousStyleCopy = _assign({}, props.style);\n          }\n          propValue = CSSPropertyOperations.createMarkupForStyles(propValue, this);\n        }\n        var markup = null;\n        if (this._tag != null && isCustomComponent(this._tag, props)) {\n          if (!RESERVED_PROPS.hasOwnProperty(propKey)) {\n            markup = DOMPropertyOperations.createMarkupForCustomAttribute(propKey, propValue);\n          }\n        } else {\n          markup = DOMPropertyOperations.createMarkupForProperty(propKey, propValue);\n        }\n        if (markup) {\n          ret += ' ' + markup;\n        }\n      }\n    }\n\n    // For static pages, no need to put React ID and checksum. Saves lots of\n    // bytes.\n    if (transaction.renderToStaticMarkup) {\n      return ret;\n    }\n\n    if (!this._hostParent) {\n      ret += ' ' + DOMPropertyOperations.createMarkupForRoot();\n    }\n    ret += ' ' + DOMPropertyOperations.createMarkupForID(this._domID);\n    return ret;\n  },\n\n  /**\n   * Creates markup for the content between the tags.\n   *\n   * @private\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {object} props\n   * @param {object} context\n   * @return {string} Content markup.\n   */\n  _createContentMarkup: function (transaction, props, context) {\n    var ret = '';\n\n    // Intentional use of != to avoid catching zero/false.\n    var innerHTML = props.dangerouslySetInnerHTML;\n    if (innerHTML != null) {\n      if (innerHTML.__html != null) {\n        ret = innerHTML.__html;\n      }\n    } else {\n      var contentToUse = CONTENT_TYPES[typeof props.children] ? props.children : null;\n      var childrenToUse = contentToUse != null ? null : props.children;\n      if (contentToUse != null) {\n        // TODO: Validate that text is allowed as a child of this node\n        ret = escapeTextContentForBrowser(contentToUse);\n        if (true) {\n          setAndValidateContentChildDev.call(this, contentToUse);\n        }\n      } else if (childrenToUse != null) {\n        var mountImages = this.mountChildren(childrenToUse, transaction, context);\n        ret = mountImages.join('');\n      }\n    }\n    if (newlineEatingTags[this._tag] && ret.charAt(0) === '\\n') {\n      // text/html ignores the first character in these tags if it's a newline\n      // Prefer to break application/xml over text/html (for now) by adding\n      // a newline specifically to get eaten by the parser. (Alternately for\n      // textareas, replacing \"^\\n\" with \"\\r\\n\" doesn't get eaten, and the first\n      // \\r is normalized out by HTMLTextAreaElement#value.)\n      // See: <http://www.w3.org/TR/html-polyglot/#newlines-in-textarea-and-pre>\n      // See: <http://www.w3.org/TR/html5/syntax.html#element-restrictions>\n      // See: <http://www.w3.org/TR/html5/syntax.html#newlines>\n      // See: Parsing of \"textarea\" \"listing\" and \"pre\" elements\n      //  from <http://www.w3.org/TR/html5/syntax.html#parsing-main-inbody>\n      return '\\n' + ret;\n    } else {\n      return ret;\n    }\n  },\n\n  _createInitialChildren: function (transaction, props, context, lazyTree) {\n    // Intentional use of != to avoid catching zero/false.\n    var innerHTML = props.dangerouslySetInnerHTML;\n    if (innerHTML != null) {\n      if (innerHTML.__html != null) {\n        DOMLazyTree.queueHTML(lazyTree, innerHTML.__html);\n      }\n    } else {\n      var contentToUse = CONTENT_TYPES[typeof props.children] ? props.children : null;\n      var childrenToUse = contentToUse != null ? null : props.children;\n      // TODO: Validate that text is allowed as a child of this node\n      if (contentToUse != null) {\n        // Avoid setting textContent when the text is empty. In IE11 setting\n        // textContent on a text area will cause the placeholder to not\n        // show within the textarea until it has been focused and blurred again.\n        // https://github.com/facebook/react/issues/6731#issuecomment-254874553\n        if (contentToUse !== '') {\n          if (true) {\n            setAndValidateContentChildDev.call(this, contentToUse);\n          }\n          DOMLazyTree.queueText(lazyTree, contentToUse);\n        }\n      } else if (childrenToUse != null) {\n        var mountImages = this.mountChildren(childrenToUse, transaction, context);\n        for (var i = 0; i < mountImages.length; i++) {\n          DOMLazyTree.queueChild(lazyTree, mountImages[i]);\n        }\n      }\n    }\n  },\n\n  /**\n   * Receives a next element and updates the component.\n   *\n   * @internal\n   * @param {ReactElement} nextElement\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {object} context\n   */\n  receiveComponent: function (nextElement, transaction, context) {\n    var prevElement = this._currentElement;\n    this._currentElement = nextElement;\n    this.updateComponent(transaction, prevElement, nextElement, context);\n  },\n\n  /**\n   * Updates a DOM component after it has already been allocated and\n   * attached to the DOM. Reconciles the root DOM node, then recurses.\n   *\n   * @param {ReactReconcileTransaction} transaction\n   * @param {ReactElement} prevElement\n   * @param {ReactElement} nextElement\n   * @internal\n   * @overridable\n   */\n  updateComponent: function (transaction, prevElement, nextElement, context) {\n    var lastProps = prevElement.props;\n    var nextProps = this._currentElement.props;\n\n    switch (this._tag) {\n      case 'input':\n        lastProps = ReactDOMInput.getHostProps(this, lastProps);\n        nextProps = ReactDOMInput.getHostProps(this, nextProps);\n        break;\n      case 'option':\n        lastProps = ReactDOMOption.getHostProps(this, lastProps);\n        nextProps = ReactDOMOption.getHostProps(this, nextProps);\n        break;\n      case 'select':\n        lastProps = ReactDOMSelect.getHostProps(this, lastProps);\n        nextProps = ReactDOMSelect.getHostProps(this, nextProps);\n        break;\n      case 'textarea':\n        lastProps = ReactDOMTextarea.getHostProps(this, lastProps);\n        nextProps = ReactDOMTextarea.getHostProps(this, nextProps);\n        break;\n    }\n\n    assertValidProps(this, nextProps);\n    this._updateDOMProperties(lastProps, nextProps, transaction);\n    this._updateDOMChildren(lastProps, nextProps, transaction, context);\n\n    switch (this._tag) {\n      case 'input':\n        // Update the wrapper around inputs *after* updating props. This has to\n        // happen after `_updateDOMProperties`. Otherwise HTML5 input validations\n        // raise warnings and prevent the new value from being assigned.\n        ReactDOMInput.updateWrapper(this);\n        break;\n      case 'textarea':\n        ReactDOMTextarea.updateWrapper(this);\n        break;\n      case 'select':\n        // <select> value update needs to occur after <option> children\n        // reconciliation\n        transaction.getReactMountReady().enqueue(postUpdateSelectWrapper, this);\n        break;\n    }\n  },\n\n  /**\n   * Reconciles the properties by detecting differences in property values and\n   * updating the DOM as necessary. This function is probably the single most\n   * critical path for performance optimization.\n   *\n   * TODO: Benchmark whether checking for changed values in memory actually\n   *       improves performance (especially statically positioned elements).\n   * TODO: Benchmark the effects of putting this at the top since 99% of props\n   *       do not change for a given reconciliation.\n   * TODO: Benchmark areas that can be improved with caching.\n   *\n   * @private\n   * @param {object} lastProps\n   * @param {object} nextProps\n   * @param {?DOMElement} node\n   */\n  _updateDOMProperties: function (lastProps, nextProps, transaction) {\n    var propKey;\n    var styleName;\n    var styleUpdates;\n    for (propKey in lastProps) {\n      if (nextProps.hasOwnProperty(propKey) || !lastProps.hasOwnProperty(propKey) || lastProps[propKey] == null) {\n        continue;\n      }\n      if (propKey === STYLE) {\n        var lastStyle = this._previousStyleCopy;\n        for (styleName in lastStyle) {\n          if (lastStyle.hasOwnProperty(styleName)) {\n            styleUpdates = styleUpdates || {};\n            styleUpdates[styleName] = '';\n          }\n        }\n        this._previousStyleCopy = null;\n      } else if (registrationNameModules.hasOwnProperty(propKey)) {\n        if (lastProps[propKey]) {\n          // Only call deleteListener if there was a listener previously or\n          // else willDeleteListener gets called when there wasn't actually a\n          // listener (e.g., onClick={null})\n          deleteListener(this, propKey);\n        }\n      } else if (isCustomComponent(this._tag, lastProps)) {\n        if (!RESERVED_PROPS.hasOwnProperty(propKey)) {\n          DOMPropertyOperations.deleteValueForAttribute(getNode(this), propKey);\n        }\n      } else if (DOMProperty.properties[propKey] || DOMProperty.isCustomAttribute(propKey)) {\n        DOMPropertyOperations.deleteValueForProperty(getNode(this), propKey);\n      }\n    }\n    for (propKey in nextProps) {\n      var nextProp = nextProps[propKey];\n      var lastProp = propKey === STYLE ? this._previousStyleCopy : lastProps != null ? lastProps[propKey] : undefined;\n      if (!nextProps.hasOwnProperty(propKey) || nextProp === lastProp || nextProp == null && lastProp == null) {\n        continue;\n      }\n      if (propKey === STYLE) {\n        if (nextProp) {\n          if (true) {\n            checkAndWarnForMutatedStyle(this._previousStyleCopy, this._previousStyle, this);\n            this._previousStyle = nextProp;\n          }\n          nextProp = this._previousStyleCopy = _assign({}, nextProp);\n        } else {\n          this._previousStyleCopy = null;\n        }\n        if (lastProp) {\n          // Unset styles on `lastProp` but not on `nextProp`.\n          for (styleName in lastProp) {\n            if (lastProp.hasOwnProperty(styleName) && (!nextProp || !nextProp.hasOwnProperty(styleName))) {\n              styleUpdates = styleUpdates || {};\n              styleUpdates[styleName] = '';\n            }\n          }\n          // Update styles that changed since `lastProp`.\n          for (styleName in nextProp) {\n            if (nextProp.hasOwnProperty(styleName) && lastProp[styleName] !== nextProp[styleName]) {\n              styleUpdates = styleUpdates || {};\n              styleUpdates[styleName] = nextProp[styleName];\n            }\n          }\n        } else {\n          // Relies on `updateStylesByID` not mutating `styleUpdates`.\n          styleUpdates = nextProp;\n        }\n      } else if (registrationNameModules.hasOwnProperty(propKey)) {\n        if (nextProp) {\n          enqueuePutListener(this, propKey, nextProp, transaction);\n        } else if (lastProp) {\n          deleteListener(this, propKey);\n        }\n      } else if (isCustomComponent(this._tag, nextProps)) {\n        if (!RESERVED_PROPS.hasOwnProperty(propKey)) {\n          DOMPropertyOperations.setValueForAttribute(getNode(this), propKey, nextProp);\n        }\n      } else if (DOMProperty.properties[propKey] || DOMProperty.isCustomAttribute(propKey)) {\n        var node = getNode(this);\n        // If we're updating to null or undefined, we should remove the property\n        // from the DOM node instead of inadvertently setting to a string. This\n        // brings us in line with the same behavior we have on initial render.\n        if (nextProp != null) {\n          DOMPropertyOperations.setValueForProperty(node, propKey, nextProp);\n        } else {\n          DOMPropertyOperations.deleteValueForProperty(node, propKey);\n        }\n      }\n    }\n    if (styleUpdates) {\n      CSSPropertyOperations.setValueForStyles(getNode(this), styleUpdates, this);\n    }\n  },\n\n  /**\n   * Reconciles the children with the various properties that affect the\n   * children content.\n   *\n   * @param {object} lastProps\n   * @param {object} nextProps\n   * @param {ReactReconcileTransaction} transaction\n   * @param {object} context\n   */\n  _updateDOMChildren: function (lastProps, nextProps, transaction, context) {\n    var lastContent = CONTENT_TYPES[typeof lastProps.children] ? lastProps.children : null;\n    var nextContent = CONTENT_TYPES[typeof nextProps.children] ? nextProps.children : null;\n\n    var lastHtml = lastProps.dangerouslySetInnerHTML && lastProps.dangerouslySetInnerHTML.__html;\n    var nextHtml = nextProps.dangerouslySetInnerHTML && nextProps.dangerouslySetInnerHTML.__html;\n\n    // Note the use of `!=` which checks for null or undefined.\n    var lastChildren = lastContent != null ? null : lastProps.children;\n    var nextChildren = nextContent != null ? null : nextProps.children;\n\n    // If we're switching from children to content/html or vice versa, remove\n    // the old content\n    var lastHasContentOrHtml = lastContent != null || lastHtml != null;\n    var nextHasContentOrHtml = nextContent != null || nextHtml != null;\n    if (lastChildren != null && nextChildren == null) {\n      this.updateChildren(null, transaction, context);\n    } else if (lastHasContentOrHtml && !nextHasContentOrHtml) {\n      this.updateTextContent('');\n      if (true) {\n        ReactInstrumentation.debugTool.onSetChildren(this._debugID, []);\n      }\n    }\n\n    if (nextContent != null) {\n      if (lastContent !== nextContent) {\n        this.updateTextContent('' + nextContent);\n        if (true) {\n          setAndValidateContentChildDev.call(this, nextContent);\n        }\n      }\n    } else if (nextHtml != null) {\n      if (lastHtml !== nextHtml) {\n        this.updateMarkup('' + nextHtml);\n      }\n      if (true) {\n        ReactInstrumentation.debugTool.onSetChildren(this._debugID, []);\n      }\n    } else if (nextChildren != null) {\n      if (true) {\n        setAndValidateContentChildDev.call(this, null);\n      }\n\n      this.updateChildren(nextChildren, transaction, context);\n    }\n  },\n\n  getHostNode: function () {\n    return getNode(this);\n  },\n\n  /**\n   * Destroys all event registrations for this instance. Does not remove from\n   * the DOM. That must be done by the parent.\n   *\n   * @internal\n   */\n  unmountComponent: function (safely) {\n    switch (this._tag) {\n      case 'audio':\n      case 'form':\n      case 'iframe':\n      case 'img':\n      case 'link':\n      case 'object':\n      case 'source':\n      case 'video':\n        var listeners = this._wrapperState.listeners;\n        if (listeners) {\n          for (var i = 0; i < listeners.length; i++) {\n            listeners[i].remove();\n          }\n        }\n        break;\n      case 'html':\n      case 'head':\n      case 'body':\n        /**\n         * Components like <html> <head> and <body> can't be removed or added\n         * easily in a cross-browser way, however it's valuable to be able to\n         * take advantage of React's reconciliation for styling and <title>\n         * management. So we just document it and throw in dangerous cases.\n         */\n         true ?  true ? invariant(false, '<%s> tried to unmount. Because of cross-browser quirks it is impossible to unmount some top-level components (eg <html>, <head>, and <body>) reliably and efficiently. To fix this, have a single top-level component that never unmounts render these elements.', this._tag) : _prodInvariant('66', this._tag) : void 0;\n        break;\n    }\n\n    this.unmountChildren(safely);\n    ReactDOMComponentTree.uncacheNode(this);\n    EventPluginHub.deleteAllListeners(this);\n    this._rootNodeID = 0;\n    this._domID = 0;\n    this._wrapperState = null;\n\n    if (true) {\n      setAndValidateContentChildDev.call(this, null);\n    }\n  },\n\n  getPublicInstance: function () {\n    return getNode(this);\n  }\n\n};\n\n_assign(ReactDOMComponent.prototype, ReactDOMComponent.Mixin, ReactMultiChild.Mixin);\n\nmodule.exports = ReactDOMComponent;//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"265.js","sources":["/home/ubuntu/workspace/node_modules/react-dom/lib/ReactDOMComponent.js"],"sourcesContent":["/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n/* global hasOwnProperty:true */\n\n'use strict';\n\nvar _prodInvariant = require('./reactProdInvariant'),\n    _assign = require('object-assign');\n\nvar AutoFocusUtils = require('./AutoFocusUtils');\nvar CSSPropertyOperations = require('./CSSPropertyOperations');\nvar DOMLazyTree = require('./DOMLazyTree');\nvar DOMNamespaces = require('./DOMNamespaces');\nvar DOMProperty = require('./DOMProperty');\nvar DOMPropertyOperations = require('./DOMPropertyOperations');\nvar EventPluginHub = require('./EventPluginHub');\nvar EventPluginRegistry = require('./EventPluginRegistry');\nvar ReactBrowserEventEmitter = require('./ReactBrowserEventEmitter');\nvar ReactDOMComponentFlags = require('./ReactDOMComponentFlags');\nvar ReactDOMComponentTree = require('./ReactDOMComponentTree');\nvar ReactDOMInput = require('./ReactDOMInput');\nvar ReactDOMOption = require('./ReactDOMOption');\nvar ReactDOMSelect = require('./ReactDOMSelect');\nvar ReactDOMTextarea = require('./ReactDOMTextarea');\nvar ReactInstrumentation = require('./ReactInstrumentation');\nvar ReactMultiChild = require('./ReactMultiChild');\nvar ReactServerRenderingTransaction = require('./ReactServerRenderingTransaction');\n\nvar emptyFunction = require('fbjs/lib/emptyFunction');\nvar escapeTextContentForBrowser = require('./escapeTextContentForBrowser');\nvar invariant = require('fbjs/lib/invariant');\nvar isEventSupported = require('./isEventSupported');\nvar shallowEqual = require('fbjs/lib/shallowEqual');\nvar validateDOMNesting = require('./validateDOMNesting');\nvar warning = require('fbjs/lib/warning');\n\nvar Flags = ReactDOMComponentFlags;\nvar deleteListener = EventPluginHub.deleteListener;\nvar getNode = ReactDOMComponentTree.getNodeFromInstance;\nvar listenTo = ReactBrowserEventEmitter.listenTo;\nvar registrationNameModules = EventPluginRegistry.registrationNameModules;\n\n// For quickly matching children type, to test if can be treated as content.\nvar CONTENT_TYPES = { 'string': true, 'number': true };\n\nvar STYLE = 'style';\nvar HTML = '__html';\nvar RESERVED_PROPS = {\n  children: null,\n  dangerouslySetInnerHTML: null,\n  suppressContentEditableWarning: null\n};\n\n// Node type for document fragments (Node.DOCUMENT_FRAGMENT_NODE).\nvar DOC_FRAGMENT_TYPE = 11;\n\nfunction getDeclarationErrorAddendum(internalInstance) {\n  if (internalInstance) {\n    var owner = internalInstance._currentElement._owner || null;\n    if (owner) {\n      var name = owner.getName();\n      if (name) {\n        return ' This DOM node was rendered by `' + name + '`.';\n      }\n    }\n  }\n  return '';\n}\n\nfunction friendlyStringify(obj) {\n  if (typeof obj === 'object') {\n    if (Array.isArray(obj)) {\n      return '[' + obj.map(friendlyStringify).join(', ') + ']';\n    } else {\n      var pairs = [];\n      for (var key in obj) {\n        if (Object.prototype.hasOwnProperty.call(obj, key)) {\n          var keyEscaped = /^[a-z$_][\\w$_]*$/i.test(key) ? key : JSON.stringify(key);\n          pairs.push(keyEscaped + ': ' + friendlyStringify(obj[key]));\n        }\n      }\n      return '{' + pairs.join(', ') + '}';\n    }\n  } else if (typeof obj === 'string') {\n    return JSON.stringify(obj);\n  } else if (typeof obj === 'function') {\n    return '[function object]';\n  }\n  // Differs from JSON.stringify in that undefined because undefined and that\n  // inf and nan don't become null\n  return String(obj);\n}\n\nvar styleMutationWarning = {};\n\nfunction checkAndWarnForMutatedStyle(style1, style2, component) {\n  if (style1 == null || style2 == null) {\n    return;\n  }\n  if (shallowEqual(style1, style2)) {\n    return;\n  }\n\n  var componentName = component._tag;\n  var owner = component._currentElement._owner;\n  var ownerName;\n  if (owner) {\n    ownerName = owner.getName();\n  }\n\n  var hash = ownerName + '|' + componentName;\n\n  if (styleMutationWarning.hasOwnProperty(hash)) {\n    return;\n  }\n\n  styleMutationWarning[hash] = true;\n\n  process.env.NODE_ENV !== 'production' ? warning(false, '`%s` was passed a style object that has previously been mutated. ' + 'Mutating `style` is deprecated. Consider cloning it beforehand. Check ' + 'the `render` %s. Previous style: %s. Mutated style: %s.', componentName, owner ? 'of `' + ownerName + '`' : 'using <' + componentName + '>', friendlyStringify(style1), friendlyStringify(style2)) : void 0;\n}\n\n/**\n * @param {object} component\n * @param {?object} props\n */\nfunction assertValidProps(component, props) {\n  if (!props) {\n    return;\n  }\n  // Note the use of `==` which checks for null or undefined.\n  if (voidElementTags[component._tag]) {\n    !(props.children == null && props.dangerouslySetInnerHTML == null) ? process.env.NODE_ENV !== 'production' ? invariant(false, '%s is a void element tag and must neither have `children` nor use `dangerouslySetInnerHTML`.%s', component._tag, component._currentElement._owner ? ' Check the render method of ' + component._currentElement._owner.getName() + '.' : '') : _prodInvariant('137', component._tag, component._currentElement._owner ? ' Check the render method of ' + component._currentElement._owner.getName() + '.' : '') : void 0;\n  }\n  if (props.dangerouslySetInnerHTML != null) {\n    !(props.children == null) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Can only set one of `children` or `props.dangerouslySetInnerHTML`.') : _prodInvariant('60') : void 0;\n    !(typeof props.dangerouslySetInnerHTML === 'object' && HTML in props.dangerouslySetInnerHTML) ? process.env.NODE_ENV !== 'production' ? invariant(false, '`props.dangerouslySetInnerHTML` must be in the form `{__html: ...}`. Please visit https://fb.me/react-invariant-dangerously-set-inner-html for more information.') : _prodInvariant('61') : void 0;\n  }\n  if (process.env.NODE_ENV !== 'production') {\n    process.env.NODE_ENV !== 'production' ? warning(props.innerHTML == null, 'Directly setting property `innerHTML` is not permitted. ' + 'For more information, lookup documentation on `dangerouslySetInnerHTML`.') : void 0;\n    process.env.NODE_ENV !== 'production' ? warning(props.suppressContentEditableWarning || !props.contentEditable || props.children == null, 'A component is `contentEditable` and contains `children` managed by ' + 'React. It is now your responsibility to guarantee that none of ' + 'those nodes are unexpectedly modified or duplicated. This is ' + 'probably not intentional.') : void 0;\n    process.env.NODE_ENV !== 'production' ? warning(props.onFocusIn == null && props.onFocusOut == null, 'React uses onFocus and onBlur instead of onFocusIn and onFocusOut. ' + 'All React events are normalized to bubble, so onFocusIn and onFocusOut ' + 'are not needed/supported by React.') : void 0;\n  }\n  !(props.style == null || typeof props.style === 'object') ? process.env.NODE_ENV !== 'production' ? invariant(false, 'The `style` prop expects a mapping from style properties to values, not a string. For example, style={{marginRight: spacing + \\'em\\'}} when using JSX.%s', getDeclarationErrorAddendum(component)) : _prodInvariant('62', getDeclarationErrorAddendum(component)) : void 0;\n}\n\nfunction enqueuePutListener(inst, registrationName, listener, transaction) {\n  if (transaction instanceof ReactServerRenderingTransaction) {\n    return;\n  }\n  if (process.env.NODE_ENV !== 'production') {\n    // IE8 has no API for event capturing and the `onScroll` event doesn't\n    // bubble.\n    process.env.NODE_ENV !== 'production' ? warning(registrationName !== 'onScroll' || isEventSupported('scroll', true), 'This browser doesn\\'t support the `onScroll` event') : void 0;\n  }\n  var containerInfo = inst._hostContainerInfo;\n  var isDocumentFragment = containerInfo._node && containerInfo._node.nodeType === DOC_FRAGMENT_TYPE;\n  var doc = isDocumentFragment ? containerInfo._node : containerInfo._ownerDocument;\n  listenTo(registrationName, doc);\n  transaction.getReactMountReady().enqueue(putListener, {\n    inst: inst,\n    registrationName: registrationName,\n    listener: listener\n  });\n}\n\nfunction putListener() {\n  var listenerToPut = this;\n  EventPluginHub.putListener(listenerToPut.inst, listenerToPut.registrationName, listenerToPut.listener);\n}\n\nfunction inputPostMount() {\n  var inst = this;\n  ReactDOMInput.postMountWrapper(inst);\n}\n\nfunction textareaPostMount() {\n  var inst = this;\n  ReactDOMTextarea.postMountWrapper(inst);\n}\n\nfunction optionPostMount() {\n  var inst = this;\n  ReactDOMOption.postMountWrapper(inst);\n}\n\nvar setAndValidateContentChildDev = emptyFunction;\nif (process.env.NODE_ENV !== 'production') {\n  setAndValidateContentChildDev = function (content) {\n    var hasExistingContent = this._contentDebugID != null;\n    var debugID = this._debugID;\n    // This ID represents the inlined child that has no backing instance:\n    var contentDebugID = -debugID;\n\n    if (content == null) {\n      if (hasExistingContent) {\n        ReactInstrumentation.debugTool.onUnmountComponent(this._contentDebugID);\n      }\n      this._contentDebugID = null;\n      return;\n    }\n\n    validateDOMNesting(null, String(content), this, this._ancestorInfo);\n    this._contentDebugID = contentDebugID;\n    if (hasExistingContent) {\n      ReactInstrumentation.debugTool.onBeforeUpdateComponent(contentDebugID, content);\n      ReactInstrumentation.debugTool.onUpdateComponent(contentDebugID);\n    } else {\n      ReactInstrumentation.debugTool.onBeforeMountComponent(contentDebugID, content, debugID);\n      ReactInstrumentation.debugTool.onMountComponent(contentDebugID);\n      ReactInstrumentation.debugTool.onSetChildren(debugID, [contentDebugID]);\n    }\n  };\n}\n\n// There are so many media events, it makes sense to just\n// maintain a list rather than create a `trapBubbledEvent` for each\nvar mediaEvents = {\n  topAbort: 'abort',\n  topCanPlay: 'canplay',\n  topCanPlayThrough: 'canplaythrough',\n  topDurationChange: 'durationchange',\n  topEmptied: 'emptied',\n  topEncrypted: 'encrypted',\n  topEnded: 'ended',\n  topError: 'error',\n  topLoadedData: 'loadeddata',\n  topLoadedMetadata: 'loadedmetadata',\n  topLoadStart: 'loadstart',\n  topPause: 'pause',\n  topPlay: 'play',\n  topPlaying: 'playing',\n  topProgress: 'progress',\n  topRateChange: 'ratechange',\n  topSeeked: 'seeked',\n  topSeeking: 'seeking',\n  topStalled: 'stalled',\n  topSuspend: 'suspend',\n  topTimeUpdate: 'timeupdate',\n  topVolumeChange: 'volumechange',\n  topWaiting: 'waiting'\n};\n\nfunction trapBubbledEventsLocal() {\n  var inst = this;\n  // If a component renders to null or if another component fatals and causes\n  // the state of the tree to be corrupted, `node` here can be null.\n  !inst._rootNodeID ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Must be mounted to trap events') : _prodInvariant('63') : void 0;\n  var node = getNode(inst);\n  !node ? process.env.NODE_ENV !== 'production' ? invariant(false, 'trapBubbledEvent(...): Requires node to be rendered.') : _prodInvariant('64') : void 0;\n\n  switch (inst._tag) {\n    case 'iframe':\n    case 'object':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topLoad', 'load', node)];\n      break;\n    case 'video':\n    case 'audio':\n\n      inst._wrapperState.listeners = [];\n      // Create listener for each media event\n      for (var event in mediaEvents) {\n        if (mediaEvents.hasOwnProperty(event)) {\n          inst._wrapperState.listeners.push(ReactBrowserEventEmitter.trapBubbledEvent(event, mediaEvents[event], node));\n        }\n      }\n      break;\n    case 'source':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topError', 'error', node)];\n      break;\n    case 'img':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topError', 'error', node), ReactBrowserEventEmitter.trapBubbledEvent('topLoad', 'load', node)];\n      break;\n    case 'form':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topReset', 'reset', node), ReactBrowserEventEmitter.trapBubbledEvent('topSubmit', 'submit', node)];\n      break;\n    case 'input':\n    case 'select':\n    case 'textarea':\n      inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topInvalid', 'invalid', node)];\n      break;\n  }\n}\n\nfunction postUpdateSelectWrapper() {\n  ReactDOMSelect.postUpdateWrapper(this);\n}\n\n// For HTML, certain tags should omit their close tag. We keep a whitelist for\n// those special-case tags.\n\nvar omittedCloseTags = {\n  'area': true,\n  'base': true,\n  'br': true,\n  'col': true,\n  'embed': true,\n  'hr': true,\n  'img': true,\n  'input': true,\n  'keygen': true,\n  'link': true,\n  'meta': true,\n  'param': true,\n  'source': true,\n  'track': true,\n  'wbr': true\n};\n\nvar newlineEatingTags = {\n  'listing': true,\n  'pre': true,\n  'textarea': true\n};\n\n// For HTML, certain tags cannot have children. This has the same purpose as\n// `omittedCloseTags` except that `menuitem` should still have its closing tag.\n\nvar voidElementTags = _assign({\n  'menuitem': true\n}, omittedCloseTags);\n\n// We accept any tag to be rendered but since this gets injected into arbitrary\n// HTML, we want to make sure that it's a safe tag.\n// http://www.w3.org/TR/REC-xml/#NT-Name\n\nvar VALID_TAG_REGEX = /^[a-zA-Z][a-zA-Z:_\\.\\-\\d]*$/; // Simplified subset\nvar validatedTagCache = {};\nvar hasOwnProperty = {}.hasOwnProperty;\n\nfunction validateDangerousTag(tag) {\n  if (!hasOwnProperty.call(validatedTagCache, tag)) {\n    !VALID_TAG_REGEX.test(tag) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Invalid tag: %s', tag) : _prodInvariant('65', tag) : void 0;\n    validatedTagCache[tag] = true;\n  }\n}\n\nfunction isCustomComponent(tagName, props) {\n  return tagName.indexOf('-') >= 0 || props.is != null;\n}\n\nvar globalIdCounter = 1;\n\n/**\n * Creates a new React class that is idempotent and capable of containing other\n * React components. It accepts event listeners and DOM properties that are\n * valid according to `DOMProperty`.\n *\n *  - Event listeners: `onClick`, `onMouseDown`, etc.\n *  - DOM properties: `className`, `name`, `title`, etc.\n *\n * The `style` property functions differently from the DOM API. It accepts an\n * object mapping of style properties to values.\n *\n * @constructor ReactDOMComponent\n * @extends ReactMultiChild\n */\nfunction ReactDOMComponent(element) {\n  var tag = element.type;\n  validateDangerousTag(tag);\n  this._currentElement = element;\n  this._tag = tag.toLowerCase();\n  this._namespaceURI = null;\n  this._renderedChildren = null;\n  this._previousStyle = null;\n  this._previousStyleCopy = null;\n  this._hostNode = null;\n  this._hostParent = null;\n  this._rootNodeID = 0;\n  this._domID = 0;\n  this._hostContainerInfo = null;\n  this._wrapperState = null;\n  this._topLevelWrapper = null;\n  this._flags = 0;\n  if (process.env.NODE_ENV !== 'production') {\n    this._ancestorInfo = null;\n    setAndValidateContentChildDev.call(this, null);\n  }\n}\n\nReactDOMComponent.displayName = 'ReactDOMComponent';\n\nReactDOMComponent.Mixin = {\n\n  /**\n   * Generates root tag markup then recurses. This method has side effects and\n   * is not idempotent.\n   *\n   * @internal\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {?ReactDOMComponent} the parent component instance\n   * @param {?object} info about the host container\n   * @param {object} context\n   * @return {string} The computed markup.\n   */\n  mountComponent: function (transaction, hostParent, hostContainerInfo, context) {\n    this._rootNodeID = globalIdCounter++;\n    this._domID = hostContainerInfo._idCounter++;\n    this._hostParent = hostParent;\n    this._hostContainerInfo = hostContainerInfo;\n\n    var props = this._currentElement.props;\n\n    switch (this._tag) {\n      case 'audio':\n      case 'form':\n      case 'iframe':\n      case 'img':\n      case 'link':\n      case 'object':\n      case 'source':\n      case 'video':\n        this._wrapperState = {\n          listeners: null\n        };\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n      case 'input':\n        ReactDOMInput.mountWrapper(this, props, hostParent);\n        props = ReactDOMInput.getHostProps(this, props);\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n      case 'option':\n        ReactDOMOption.mountWrapper(this, props, hostParent);\n        props = ReactDOMOption.getHostProps(this, props);\n        break;\n      case 'select':\n        ReactDOMSelect.mountWrapper(this, props, hostParent);\n        props = ReactDOMSelect.getHostProps(this, props);\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n      case 'textarea':\n        ReactDOMTextarea.mountWrapper(this, props, hostParent);\n        props = ReactDOMTextarea.getHostProps(this, props);\n        transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);\n        break;\n    }\n\n    assertValidProps(this, props);\n\n    // We create tags in the namespace of their parent container, except HTML\n    // tags get no namespace.\n    var namespaceURI;\n    var parentTag;\n    if (hostParent != null) {\n      namespaceURI = hostParent._namespaceURI;\n      parentTag = hostParent._tag;\n    } else if (hostContainerInfo._tag) {\n      namespaceURI = hostContainerInfo._namespaceURI;\n      parentTag = hostContainerInfo._tag;\n    }\n    if (namespaceURI == null || namespaceURI === DOMNamespaces.svg && parentTag === 'foreignobject') {\n      namespaceURI = DOMNamespaces.html;\n    }\n    if (namespaceURI === DOMNamespaces.html) {\n      if (this._tag === 'svg') {\n        namespaceURI = DOMNamespaces.svg;\n      } else if (this._tag === 'math') {\n        namespaceURI = DOMNamespaces.mathml;\n      }\n    }\n    this._namespaceURI = namespaceURI;\n\n    if (process.env.NODE_ENV !== 'production') {\n      var parentInfo;\n      if (hostParent != null) {\n        parentInfo = hostParent._ancestorInfo;\n      } else if (hostContainerInfo._tag) {\n        parentInfo = hostContainerInfo._ancestorInfo;\n      }\n      if (parentInfo) {\n        // parentInfo should always be present except for the top-level\n        // component when server rendering\n        validateDOMNesting(this._tag, null, this, parentInfo);\n      }\n      this._ancestorInfo = validateDOMNesting.updatedAncestorInfo(parentInfo, this._tag, this);\n    }\n\n    var mountImage;\n    if (transaction.useCreateElement) {\n      var ownerDocument = hostContainerInfo._ownerDocument;\n      var el;\n      if (namespaceURI === DOMNamespaces.html) {\n        if (this._tag === 'script') {\n          // Create the script via .innerHTML so its \"parser-inserted\" flag is\n          // set to true and it does not execute\n          var div = ownerDocument.createElement('div');\n          var type = this._currentElement.type;\n          div.innerHTML = '<' + type + '></' + type + '>';\n          el = div.removeChild(div.firstChild);\n        } else if (props.is) {\n          el = ownerDocument.createElement(this._currentElement.type, props.is);\n        } else {\n          // Separate else branch instead of using `props.is || undefined` above becuase of a Firefox bug.\n          // See discussion in https://github.com/facebook/react/pull/6896\n          // and discussion in https://bugzilla.mozilla.org/show_bug.cgi?id=1276240\n          el = ownerDocument.createElement(this._currentElement.type);\n        }\n      } else {\n        el = ownerDocument.createElementNS(namespaceURI, this._currentElement.type);\n      }\n      ReactDOMComponentTree.precacheNode(this, el);\n      this._flags |= Flags.hasCachedChildNodes;\n      if (!this._hostParent) {\n        DOMPropertyOperations.setAttributeForRoot(el);\n      }\n      this._updateDOMProperties(null, props, transaction);\n      var lazyTree = DOMLazyTree(el);\n      this._createInitialChildren(transaction, props, context, lazyTree);\n      mountImage = lazyTree;\n    } else {\n      var tagOpen = this._createOpenTagMarkupAndPutListeners(transaction, props);\n      var tagContent = this._createContentMarkup(transaction, props, context);\n      if (!tagContent && omittedCloseTags[this._tag]) {\n        mountImage = tagOpen + '/>';\n      } else {\n        mountImage = tagOpen + '>' + tagContent + '</' + this._currentElement.type + '>';\n      }\n    }\n\n    switch (this._tag) {\n      case 'input':\n        transaction.getReactMountReady().enqueue(inputPostMount, this);\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'textarea':\n        transaction.getReactMountReady().enqueue(textareaPostMount, this);\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'select':\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'button':\n        if (props.autoFocus) {\n          transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);\n        }\n        break;\n      case 'option':\n        transaction.getReactMountReady().enqueue(optionPostMount, this);\n        break;\n    }\n\n    return mountImage;\n  },\n\n  /**\n   * Creates markup for the open tag and all attributes.\n   *\n   * This method has side effects because events get registered.\n   *\n   * Iterating over object properties is faster than iterating over arrays.\n   * @see http://jsperf.com/obj-vs-arr-iteration\n   *\n   * @private\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {object} props\n   * @return {string} Markup of opening tag.\n   */\n  _createOpenTagMarkupAndPutListeners: function (transaction, props) {\n    var ret = '<' + this._currentElement.type;\n\n    for (var propKey in props) {\n      if (!props.hasOwnProperty(propKey)) {\n        continue;\n      }\n      var propValue = props[propKey];\n      if (propValue == null) {\n        continue;\n      }\n      if (registrationNameModules.hasOwnProperty(propKey)) {\n        if (propValue) {\n          enqueuePutListener(this, propKey, propValue, transaction);\n        }\n      } else {\n        if (propKey === STYLE) {\n          if (propValue) {\n            if (process.env.NODE_ENV !== 'production') {\n              // See `_updateDOMProperties`. style block\n              this._previousStyle = propValue;\n            }\n            propValue = this._previousStyleCopy = _assign({}, props.style);\n          }\n          propValue = CSSPropertyOperations.createMarkupForStyles(propValue, this);\n        }\n        var markup = null;\n        if (this._tag != null && isCustomComponent(this._tag, props)) {\n          if (!RESERVED_PROPS.hasOwnProperty(propKey)) {\n            markup = DOMPropertyOperations.createMarkupForCustomAttribute(propKey, propValue);\n          }\n        } else {\n          markup = DOMPropertyOperations.createMarkupForProperty(propKey, propValue);\n        }\n        if (markup) {\n          ret += ' ' + markup;\n        }\n      }\n    }\n\n    // For static pages, no need to put React ID and checksum. Saves lots of\n    // bytes.\n    if (transaction.renderToStaticMarkup) {\n      return ret;\n    }\n\n    if (!this._hostParent) {\n      ret += ' ' + DOMPropertyOperations.createMarkupForRoot();\n    }\n    ret += ' ' + DOMPropertyOperations.createMarkupForID(this._domID);\n    return ret;\n  },\n\n  /**\n   * Creates markup for the content between the tags.\n   *\n   * @private\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {object} props\n   * @param {object} context\n   * @return {string} Content markup.\n   */\n  _createContentMarkup: function (transaction, props, context) {\n    var ret = '';\n\n    // Intentional use of != to avoid catching zero/false.\n    var innerHTML = props.dangerouslySetInnerHTML;\n    if (innerHTML != null) {\n      if (innerHTML.__html != null) {\n        ret = innerHTML.__html;\n      }\n    } else {\n      var contentToUse = CONTENT_TYPES[typeof props.children] ? props.children : null;\n      var childrenToUse = contentToUse != null ? null : props.children;\n      if (contentToUse != null) {\n        // TODO: Validate that text is allowed as a child of this node\n        ret = escapeTextContentForBrowser(contentToUse);\n        if (process.env.NODE_ENV !== 'production') {\n          setAndValidateContentChildDev.call(this, contentToUse);\n        }\n      } else if (childrenToUse != null) {\n        var mountImages = this.mountChildren(childrenToUse, transaction, context);\n        ret = mountImages.join('');\n      }\n    }\n    if (newlineEatingTags[this._tag] && ret.charAt(0) === '\\n') {\n      // text/html ignores the first character in these tags if it's a newline\n      // Prefer to break application/xml over text/html (for now) by adding\n      // a newline specifically to get eaten by the parser. (Alternately for\n      // textareas, replacing \"^\\n\" with \"\\r\\n\" doesn't get eaten, and the first\n      // \\r is normalized out by HTMLTextAreaElement#value.)\n      // See: <http://www.w3.org/TR/html-polyglot/#newlines-in-textarea-and-pre>\n      // See: <http://www.w3.org/TR/html5/syntax.html#element-restrictions>\n      // See: <http://www.w3.org/TR/html5/syntax.html#newlines>\n      // See: Parsing of \"textarea\" \"listing\" and \"pre\" elements\n      //  from <http://www.w3.org/TR/html5/syntax.html#parsing-main-inbody>\n      return '\\n' + ret;\n    } else {\n      return ret;\n    }\n  },\n\n  _createInitialChildren: function (transaction, props, context, lazyTree) {\n    // Intentional use of != to avoid catching zero/false.\n    var innerHTML = props.dangerouslySetInnerHTML;\n    if (innerHTML != null) {\n      if (innerHTML.__html != null) {\n        DOMLazyTree.queueHTML(lazyTree, innerHTML.__html);\n      }\n    } else {\n      var contentToUse = CONTENT_TYPES[typeof props.children] ? props.children : null;\n      var childrenToUse = contentToUse != null ? null : props.children;\n      // TODO: Validate that text is allowed as a child of this node\n      if (contentToUse != null) {\n        // Avoid setting textContent when the text is empty. In IE11 setting\n        // textContent on a text area will cause the placeholder to not\n        // show within the textarea until it has been focused and blurred again.\n        // https://github.com/facebook/react/issues/6731#issuecomment-254874553\n        if (contentToUse !== '') {\n          if (process.env.NODE_ENV !== 'production') {\n            setAndValidateContentChildDev.call(this, contentToUse);\n          }\n          DOMLazyTree.queueText(lazyTree, contentToUse);\n        }\n      } else if (childrenToUse != null) {\n        var mountImages = this.mountChildren(childrenToUse, transaction, context);\n        for (var i = 0; i < mountImages.length; i++) {\n          DOMLazyTree.queueChild(lazyTree, mountImages[i]);\n        }\n      }\n    }\n  },\n\n  /**\n   * Receives a next element and updates the component.\n   *\n   * @internal\n   * @param {ReactElement} nextElement\n   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction\n   * @param {object} context\n   */\n  receiveComponent: function (nextElement, transaction, context) {\n    var prevElement = this._currentElement;\n    this._currentElement = nextElement;\n    this.updateComponent(transaction, prevElement, nextElement, context);\n  },\n\n  /**\n   * Updates a DOM component after it has already been allocated and\n   * attached to the DOM. Reconciles the root DOM node, then recurses.\n   *\n   * @param {ReactReconcileTransaction} transaction\n   * @param {ReactElement} prevElement\n   * @param {ReactElement} nextElement\n   * @internal\n   * @overridable\n   */\n  updateComponent: function (transaction, prevElement, nextElement, context) {\n    var lastProps = prevElement.props;\n    var nextProps = this._currentElement.props;\n\n    switch (this._tag) {\n      case 'input':\n        lastProps = ReactDOMInput.getHostProps(this, lastProps);\n        nextProps = ReactDOMInput.getHostProps(this, nextProps);\n        break;\n      case 'option':\n        lastProps = ReactDOMOption.getHostProps(this, lastProps);\n        nextProps = ReactDOMOption.getHostProps(this, nextProps);\n        break;\n      case 'select':\n        lastProps = ReactDOMSelect.getHostProps(this, lastProps);\n        nextProps = ReactDOMSelect.getHostProps(this, nextProps);\n        break;\n      case 'textarea':\n        lastProps = ReactDOMTextarea.getHostProps(this, lastProps);\n        nextProps = ReactDOMTextarea.getHostProps(this, nextProps);\n        break;\n    }\n\n    assertValidProps(this, nextProps);\n    this._updateDOMProperties(lastProps, nextProps, transaction);\n    this._updateDOMChildren(lastProps, nextProps, transaction, context);\n\n    switch (this._tag) {\n      case 'input':\n        // Update the wrapper around inputs *after* updating props. This has to\n        // happen after `_updateDOMProperties`. Otherwise HTML5 input validations\n        // raise warnings and prevent the new value from being assigned.\n        ReactDOMInput.updateWrapper(this);\n        break;\n      case 'textarea':\n        ReactDOMTextarea.updateWrapper(this);\n        break;\n      case 'select':\n        // <select> value update needs to occur after <option> children\n        // reconciliation\n        transaction.getReactMountReady().enqueue(postUpdateSelectWrapper, this);\n        break;\n    }\n  },\n\n  /**\n   * Reconciles the properties by detecting differences in property values and\n   * updating the DOM as necessary. This function is probably the single most\n   * critical path for performance optimization.\n   *\n   * TODO: Benchmark whether checking for changed values in memory actually\n   *       improves performance (especially statically positioned elements).\n   * TODO: Benchmark the effects of putting this at the top since 99% of props\n   *       do not change for a given reconciliation.\n   * TODO: Benchmark areas that can be improved with caching.\n   *\n   * @private\n   * @param {object} lastProps\n   * @param {object} nextProps\n   * @param {?DOMElement} node\n   */\n  _updateDOMProperties: function (lastProps, nextProps, transaction) {\n    var propKey;\n    var styleName;\n    var styleUpdates;\n    for (propKey in lastProps) {\n      if (nextProps.hasOwnProperty(propKey) || !lastProps.hasOwnProperty(propKey) || lastProps[propKey] == null) {\n        continue;\n      }\n      if (propKey === STYLE) {\n        var lastStyle = this._previousStyleCopy;\n        for (styleName in lastStyle) {\n          if (lastStyle.hasOwnProperty(styleName)) {\n            styleUpdates = styleUpdates || {};\n            styleUpdates[styleName] = '';\n          }\n        }\n        this._previousStyleCopy = null;\n      } else if (registrationNameModules.hasOwnProperty(propKey)) {\n        if (lastProps[propKey]) {\n          // Only call deleteListener if there was a listener previously or\n          // else willDeleteListener gets called when there wasn't actually a\n          // listener (e.g., onClick={null})\n          deleteListener(this, propKey);\n        }\n      } else if (isCustomComponent(this._tag, lastProps)) {\n        if (!RESERVED_PROPS.hasOwnProperty(propKey)) {\n          DOMPropertyOperations.deleteValueForAttribute(getNode(this), propKey);\n        }\n      } else if (DOMProperty.properties[propKey] || DOMProperty.isCustomAttribute(propKey)) {\n        DOMPropertyOperations.deleteValueForProperty(getNode(this), propKey);\n      }\n    }\n    for (propKey in nextProps) {\n      var nextProp = nextProps[propKey];\n      var lastProp = propKey === STYLE ? this._previousStyleCopy : lastProps != null ? lastProps[propKey] : undefined;\n      if (!nextProps.hasOwnProperty(propKey) || nextProp === lastProp || nextProp == null && lastProp == null) {\n        continue;\n      }\n      if (propKey === STYLE) {\n        if (nextProp) {\n          if (process.env.NODE_ENV !== 'production') {\n            checkAndWarnForMutatedStyle(this._previousStyleCopy, this._previousStyle, this);\n            this._previousStyle = nextProp;\n          }\n          nextProp = this._previousStyleCopy = _assign({}, nextProp);\n        } else {\n          this._previousStyleCopy = null;\n        }\n        if (lastProp) {\n          // Unset styles on `lastProp` but not on `nextProp`.\n          for (styleName in lastProp) {\n            if (lastProp.hasOwnProperty(styleName) && (!nextProp || !nextProp.hasOwnProperty(styleName))) {\n              styleUpdates = styleUpdates || {};\n              styleUpdates[styleName] = '';\n            }\n          }\n          // Update styles that changed since `lastProp`.\n          for (styleName in nextProp) {\n            if (nextProp.hasOwnProperty(styleName) && lastProp[styleName] !== nextProp[styleName]) {\n              styleUpdates = styleUpdates || {};\n              styleUpdates[styleName] = nextProp[styleName];\n            }\n          }\n        } else {\n          // Relies on `updateStylesByID` not mutating `styleUpdates`.\n          styleUpdates = nextProp;\n        }\n      } else if (registrationNameModules.hasOwnProperty(propKey)) {\n        if (nextProp) {\n          enqueuePutListener(this, propKey, nextProp, transaction);\n        } else if (lastProp) {\n          deleteListener(this, propKey);\n        }\n      } else if (isCustomComponent(this._tag, nextProps)) {\n        if (!RESERVED_PROPS.hasOwnProperty(propKey)) {\n          DOMPropertyOperations.setValueForAttribute(getNode(this), propKey, nextProp);\n        }\n      } else if (DOMProperty.properties[propKey] || DOMProperty.isCustomAttribute(propKey)) {\n        var node = getNode(this);\n        // If we're updating to null or undefined, we should remove the property\n        // from the DOM node instead of inadvertently setting to a string. This\n        // brings us in line with the same behavior we have on initial render.\n        if (nextProp != null) {\n          DOMPropertyOperations.setValueForProperty(node, propKey, nextProp);\n        } else {\n          DOMPropertyOperations.deleteValueForProperty(node, propKey);\n        }\n      }\n    }\n    if (styleUpdates) {\n      CSSPropertyOperations.setValueForStyles(getNode(this), styleUpdates, this);\n    }\n  },\n\n  /**\n   * Reconciles the children with the various properties that affect the\n   * children content.\n   *\n   * @param {object} lastProps\n   * @param {object} nextProps\n   * @param {ReactReconcileTransaction} transaction\n   * @param {object} context\n   */\n  _updateDOMChildren: function (lastProps, nextProps, transaction, context) {\n    var lastContent = CONTENT_TYPES[typeof lastProps.children] ? lastProps.children : null;\n    var nextContent = CONTENT_TYPES[typeof nextProps.children] ? nextProps.children : null;\n\n    var lastHtml = lastProps.dangerouslySetInnerHTML && lastProps.dangerouslySetInnerHTML.__html;\n    var nextHtml = nextProps.dangerouslySetInnerHTML && nextProps.dangerouslySetInnerHTML.__html;\n\n    // Note the use of `!=` which checks for null or undefined.\n    var lastChildren = lastContent != null ? null : lastProps.children;\n    var nextChildren = nextContent != null ? null : nextProps.children;\n\n    // If we're switching from children to content/html or vice versa, remove\n    // the old content\n    var lastHasContentOrHtml = lastContent != null || lastHtml != null;\n    var nextHasContentOrHtml = nextContent != null || nextHtml != null;\n    if (lastChildren != null && nextChildren == null) {\n      this.updateChildren(null, transaction, context);\n    } else if (lastHasContentOrHtml && !nextHasContentOrHtml) {\n      this.updateTextContent('');\n      if (process.env.NODE_ENV !== 'production') {\n        ReactInstrumentation.debugTool.onSetChildren(this._debugID, []);\n      }\n    }\n\n    if (nextContent != null) {\n      if (lastContent !== nextContent) {\n        this.updateTextContent('' + nextContent);\n        if (process.env.NODE_ENV !== 'production') {\n          setAndValidateContentChildDev.call(this, nextContent);\n        }\n      }\n    } else if (nextHtml != null) {\n      if (lastHtml !== nextHtml) {\n        this.updateMarkup('' + nextHtml);\n      }\n      if (process.env.NODE_ENV !== 'production') {\n        ReactInstrumentation.debugTool.onSetChildren(this._debugID, []);\n      }\n    } else if (nextChildren != null) {\n      if (process.env.NODE_ENV !== 'production') {\n        setAndValidateContentChildDev.call(this, null);\n      }\n\n      this.updateChildren(nextChildren, transaction, context);\n    }\n  },\n\n  getHostNode: function () {\n    return getNode(this);\n  },\n\n  /**\n   * Destroys all event registrations for this instance. Does not remove from\n   * the DOM. That must be done by the parent.\n   *\n   * @internal\n   */\n  unmountComponent: function (safely) {\n    switch (this._tag) {\n      case 'audio':\n      case 'form':\n      case 'iframe':\n      case 'img':\n      case 'link':\n      case 'object':\n      case 'source':\n      case 'video':\n        var listeners = this._wrapperState.listeners;\n        if (listeners) {\n          for (var i = 0; i < listeners.length; i++) {\n            listeners[i].remove();\n          }\n        }\n        break;\n      case 'html':\n      case 'head':\n      case 'body':\n        /**\n         * Components like <html> <head> and <body> can't be removed or added\n         * easily in a cross-browser way, however it's valuable to be able to\n         * take advantage of React's reconciliation for styling and <title>\n         * management. So we just document it and throw in dangerous cases.\n         */\n        !false ? process.env.NODE_ENV !== 'production' ? invariant(false, '<%s> tried to unmount. Because of cross-browser quirks it is impossible to unmount some top-level components (eg <html>, <head>, and <body>) reliably and efficiently. To fix this, have a single top-level component that never unmounts render these elements.', this._tag) : _prodInvariant('66', this._tag) : void 0;\n        break;\n    }\n\n    this.unmountChildren(safely);\n    ReactDOMComponentTree.uncacheNode(this);\n    EventPluginHub.deleteAllListeners(this);\n    this._rootNodeID = 0;\n    this._domID = 0;\n    this._wrapperState = null;\n\n    if (process.env.NODE_ENV !== 'production') {\n      setAndValidateContentChildDev.call(this, null);\n    }\n  },\n\n  getPublicInstance: function () {\n    return getNode(this);\n  }\n\n};\n\n_assign(ReactDOMComponent.prototype, ReactDOMComponent.Mixin, ReactMultiChild.Mixin);\n\nmodule.exports = ReactDOMComponent;\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/react-dom/lib/ReactDOMComponent.js\n// module id = 265\n// module chunks = 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Severity: Minor
Found in app/assets/javascripts/metamaps.secret.bundle.js by fixme

FIXME found
Open

    eval("/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = __webpack_require__(452);\nvar logging = __webpack_require__(448).log;\n\nvar edgeShim = {\n  shimPeerConnection: function() {\n    if (window.RTCIceGatherer) {\n      // ORTC defines an RTCIceCandidate object but no constructor.\n      // Not implemented in Edge.\n      if (!window.RTCIceCandidate) {\n        window.RTCIceCandidate = function(args) {\n          return args;\n        };\n      }\n      // ORTC does not have a session description object but\n      // other browsers (i.e. Chrome) that will support both PC and ORTC\n      // in the future might have this defined already.\n      if (!window.RTCSessionDescription) {\n        window.RTCSessionDescription = function(args) {\n          return args;\n        };\n      }\n    }\n\n    window.RTCPeerConnection = function(config) {\n      var self = this;\n\n      var _eventTarget = document.createDocumentFragment();\n      ['addEventListener', 'removeEventListener', 'dispatchEvent']\n          .forEach(function(method) {\n            self[method] = _eventTarget[method].bind(_eventTarget);\n          });\n\n      this.onicecandidate = null;\n      this.onaddstream = null;\n      this.ontrack = null;\n      this.onremovestream = null;\n      this.onsignalingstatechange = null;\n      this.oniceconnectionstatechange = null;\n      this.onnegotiationneeded = null;\n      this.ondatachannel = null;\n\n      this.localStreams = [];\n      this.remoteStreams = [];\n      this.getLocalStreams = function() {\n        return self.localStreams;\n      };\n      this.getRemoteStreams = function() {\n        return self.remoteStreams;\n      };\n\n      this.localDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.remoteDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.signalingState = 'stable';\n      this.iceConnectionState = 'new';\n      this.iceGatheringState = 'new';\n\n      this.iceOptions = {\n        gatherPolicy: 'all',\n        iceServers: []\n      };\n      if (config && config.iceTransportPolicy) {\n        switch (config.iceTransportPolicy) {\n          case 'all':\n          case 'relay':\n            this.iceOptions.gatherPolicy = config.iceTransportPolicy;\n            break;\n          case 'none':\n            // FIXME: remove once implementation and spec have added this.\n            throw new TypeError('iceTransportPolicy \"none\" not supported');\n          default:\n            // don't set iceTransportPolicy.\n            break;\n        }\n      }\n      this.usingBundle = config && config.bundlePolicy === 'max-bundle';\n\n      if (config && config.iceServers) {\n        // Edge does not like\n        // 1) stun:\n        // 2) turn: that does not have all of turn:host:port?transport=udp\n        var iceServers = JSON.parse(JSON.stringify(config.iceServers));\n        this.iceOptions.iceServers = iceServers.filter(function(server) {\n          if (server && server.urls) {\n            var urls = server.urls;\n            if (typeof urls === 'string') {\n              urls = [urls];\n            }\n            urls = urls.filter(function(url) {\n              return url.indexOf('turn:') === 0 &&\n                  url.indexOf('transport=udp') !== -1;\n            })[0];\n            return !!urls;\n          }\n          return false;\n        });\n      }\n\n      // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n      // everything that is needed to describe a SDP m-line.\n      this.transceivers = [];\n\n      // since the iceGatherer is currently created in createOffer but we\n      // must not emit candidates until after setLocalDescription we buffer\n      // them in this array.\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype._emitBufferedCandidates = function() {\n      var self = this;\n      var sections = SDPUtils.splitSections(self.localDescription.sdp);\n      // FIXME: need to apply ice candidates in a way which is async but\n      // in-order\n      this._localIceCandidatesBuffer.forEach(function(event) {\n        var end = !event.candidate || Object.keys(event.candidate).length === 0;\n        if (end) {\n          for (var j = 1; j < sections.length; j++) {\n            if (sections[j].indexOf('\\r\\na=end-of-candidates\\r\\n') === -1) {\n              sections[j] += 'a=end-of-candidates\\r\\n';\n            }\n          }\n        } else if (event.candidate.candidate.indexOf('typ endOfCandidates')\n            === -1) {\n          sections[event.candidate.sdpMLineIndex + 1] +=\n              'a=' + event.candidate.candidate + '\\r\\n';\n        }\n        self.localDescription.sdp = sections.join('');\n        self.dispatchEvent(event);\n        if (self.onicecandidate !== null) {\n          self.onicecandidate(event);\n        }\n        if (!event.candidate && self.iceGatheringState !== 'complete') {\n          var complete = self.transceivers.every(function(transceiver) {\n            return transceiver.iceGatherer &&\n                transceiver.iceGatherer.state === 'completed';\n          });\n          if (complete) {\n            self.iceGatheringState = 'complete';\n          }\n        }\n      });\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype.addStream = function(stream) {\n      // Clone is necessary for local demos mostly, attaching directly\n      // to two different senders does not work (build 10547).\n      this.localStreams.push(stream.clone());\n      this._maybeFireNegotiationNeeded();\n    };\n\n    window.RTCPeerConnection.prototype.removeStream = function(stream) {\n      var idx = this.localStreams.indexOf(stream);\n      if (idx > -1) {\n        this.localStreams.splice(idx, 1);\n        this._maybeFireNegotiationNeeded();\n      }\n    };\n\n    window.RTCPeerConnection.prototype.getSenders = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpSender;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpSender;\n      });\n    };\n\n    window.RTCPeerConnection.prototype.getReceivers = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpReceiver;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpReceiver;\n      });\n    };\n\n    // Determines the intersection of local and remote capabilities.\n    window.RTCPeerConnection.prototype._getCommonCapabilities =\n        function(localCapabilities, remoteCapabilities) {\n          var commonCapabilities = {\n            codecs: [],\n            headerExtensions: [],\n            fecMechanisms: []\n          };\n          localCapabilities.codecs.forEach(function(lCodec) {\n            for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n              var rCodec = remoteCapabilities.codecs[i];\n              if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n                  lCodec.clockRate === rCodec.clockRate &&\n                  lCodec.numChannels === rCodec.numChannels) {\n                // push rCodec so we reply with offerer payload type\n                commonCapabilities.codecs.push(rCodec);\n\n                // FIXME: also need to determine intersection between\n                // .rtcpFeedback and .parameters\n                break;\n              }\n            }\n          });\n\n          localCapabilities.headerExtensions\n              .forEach(function(lHeaderExtension) {\n                for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n                     i++) {\n                  var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n                  if (lHeaderExtension.uri === rHeaderExtension.uri) {\n                    commonCapabilities.headerExtensions.push(rHeaderExtension);\n                    break;\n                  }\n                }\n              });\n\n          // FIXME: fecMechanisms\n          return commonCapabilities;\n        };\n\n    // Create ICE gatherer, ICE transport and DTLS transport.\n    window.RTCPeerConnection.prototype._createIceAndDtlsTransports =\n        function(mid, sdpMLineIndex) {\n          var self = this;\n          var iceGatherer = new RTCIceGatherer(self.iceOptions);\n          var iceTransport = new RTCIceTransport(iceGatherer);\n          iceGatherer.onlocalcandidate = function(evt) {\n            var event = new Event('icecandidate');\n            event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n            var cand = evt.candidate;\n            var end = !cand || Object.keys(cand).length === 0;\n            // Edge emits an empty object for RTCIceCandidateComplete‥\n            if (end) {\n              // polyfill since RTCIceGatherer.state is not implemented in\n              // Edge 10547 yet.\n              if (iceGatherer.state === undefined) {\n                iceGatherer.state = 'completed';\n              }\n\n              // Emit a candidate with type endOfCandidates to make the samples\n              // work. Edge requires addIceCandidate with this empty candidate\n              // to start checking. The real solution is to signal\n              // end-of-candidates to the other side when getting the null\n              // candidate but some apps (like the samples) don't do that.\n              event.candidate.candidate =\n                  'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates';\n            } else {\n              // RTCIceCandidate doesn't have a component, needs to be added\n              cand.component = iceTransport.component === 'RTCP' ? 2 : 1;\n              event.candidate.candidate = SDPUtils.writeCandidate(cand);\n            }\n\n            // update local description.\n            var sections = SDPUtils.splitSections(self.localDescription.sdp);\n            if (event.candidate.candidate.indexOf('typ endOfCandidates')\n                === -1) {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=' + event.candidate.candidate + '\\r\\n';\n            } else {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=end-of-candidates\\r\\n';\n            }\n            self.localDescription.sdp = sections.join('');\n\n            var complete = self.transceivers.every(function(transceiver) {\n              return transceiver.iceGatherer &&\n                  transceiver.iceGatherer.state === 'completed';\n            });\n\n            // Emit candidate if localDescription is set.\n            // Also emits null candidate when all gatherers are complete.\n            switch (self.iceGatheringState) {\n              case 'new':\n                self._localIceCandidatesBuffer.push(event);\n                if (end && complete) {\n                  self._localIceCandidatesBuffer.push(\n                      new Event('icecandidate'));\n                }\n                break;\n              case 'gathering':\n                self._emitBufferedCandidates();\n                self.dispatchEvent(event);\n                if (self.onicecandidate !== null) {\n                  self.onicecandidate(event);\n                }\n                if (complete) {\n                  self.dispatchEvent(new Event('icecandidate'));\n                  if (self.onicecandidate !== null) {\n                    self.onicecandidate(new Event('icecandidate'));\n                  }\n                  self.iceGatheringState = 'complete';\n                }\n                break;\n              case 'complete':\n                // should not happen... currently!\n                break;\n              default: // no-op.\n                break;\n            }\n          };\n          iceTransport.onicestatechange = function() {\n            self._updateConnectionState();\n          };\n\n          var dtlsTransport = new RTCDtlsTransport(iceTransport);\n          dtlsTransport.ondtlsstatechange = function() {\n            self._updateConnectionState();\n          };\n          dtlsTransport.onerror = function() {\n            // onerror does not set state to failed by itself.\n            dtlsTransport.state = 'failed';\n            self._updateConnectionState();\n          };\n\n          return {\n            iceGatherer: iceGatherer,\n            iceTransport: iceTransport,\n            dtlsTransport: dtlsTransport\n          };\n        };\n\n    // Start the RTP Sender and Receiver for a transceiver.\n    window.RTCPeerConnection.prototype._transceive = function(transceiver,\n        send, recv) {\n      var params = this._getCommonCapabilities(transceiver.localCapabilities,\n          transceiver.remoteCapabilities);\n      if (send && transceiver.rtpSender) {\n        params.encodings = transceiver.sendEncodingParameters;\n        params.rtcp = {\n          cname: SDPUtils.localCName\n        };\n        if (transceiver.recvEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpSender.send(params);\n      }\n      if (recv && transceiver.rtpReceiver) {\n        params.encodings = transceiver.recvEncodingParameters;\n        params.rtcp = {\n          cname: transceiver.cname\n        };\n        if (transceiver.sendEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpReceiver.receive(params);\n      }\n    };\n\n    window.RTCPeerConnection.prototype.setLocalDescription =\n        function(description) {\n          var self = this;\n          var sections;\n          var sessionpart;\n          if (description.type === 'offer') {\n            // FIXME: What was the purpose of this empty if statement?\n            // if (!this._pendingOffer) {\n            // } else {\n            if (this._pendingOffer) {\n              // VERY limited support for SDP munging. Limited to:\n              // * changing the order of codecs\n              sections = SDPUtils.splitSections(description.sdp);\n              sessionpart = sections.shift();\n              sections.forEach(function(mediaSection, sdpMLineIndex) {\n                var caps = SDPUtils.parseRtpParameters(mediaSection);\n                self._pendingOffer[sdpMLineIndex].localCapabilities = caps;\n              });\n              this.transceivers = this._pendingOffer;\n              delete this._pendingOffer;\n            }\n          } else if (description.type === 'answer') {\n            sections = SDPUtils.splitSections(self.remoteDescription.sdp);\n            sessionpart = sections.shift();\n            var isIceLite = SDPUtils.matchPrefix(sessionpart,\n                'a=ice-lite').length > 0;\n            sections.forEach(function(mediaSection, sdpMLineIndex) {\n              var transceiver = self.transceivers[sdpMLineIndex];\n              var iceGatherer = transceiver.iceGatherer;\n              var iceTransport = transceiver.iceTransport;\n              var dtlsTransport = transceiver.dtlsTransport;\n              var localCapabilities = transceiver.localCapabilities;\n              var remoteCapabilities = transceiver.remoteCapabilities;\n              var rejected = mediaSection.split('\\n', 1)[0]\n                  .split(' ', 2)[1] === '0';\n\n              if (!rejected) {\n                var remoteIceParameters = SDPUtils.getIceParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                  .map(function(cand) {\n                    return SDPUtils.parseCandidate(cand);\n                  })\n                  .filter(function(cand) {\n                    return cand.component === '1';\n                  });\n                  // ice-lite only includes host candidates in the SDP so we can\n                  // use setRemoteCandidates (which implies an\n                  // RTCIceCandidateComplete)\n                  if (cands.length) {\n                    iceTransport.setRemoteCandidates(cands);\n                  }\n                }\n                var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  remoteDtlsParameters.role = 'server';\n                }\n\n                if (!self.usingBundle || sdpMLineIndex === 0) {\n                  iceTransport.start(iceGatherer, remoteIceParameters,\n                      isIceLite ? 'controlling' : 'controlled');\n                  dtlsTransport.start(remoteDtlsParameters);\n                }\n\n                // Calculate intersection of capabilities.\n                var params = self._getCommonCapabilities(localCapabilities,\n                    remoteCapabilities);\n\n                // Start the RTCRtpSender. The RTCRtpReceiver for this\n                // transceiver has already been started in setRemoteDescription.\n                self._transceive(transceiver,\n                    params.codecs.length > 0,\n                    false);\n              }\n            });\n          }\n\n          this.localDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-local-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n\n          // If a success callback was provided, emit ICE candidates after it\n          // has been executed. Otherwise, emit callback after the Promise is\n          // resolved.\n          var hasCallback = arguments.length > 1 &&\n            typeof arguments[1] === 'function';\n          if (hasCallback) {\n            var cb = arguments[1];\n            window.setTimeout(function() {\n              cb();\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              self._emitBufferedCandidates();\n            }, 0);\n          }\n          var p = Promise.resolve();\n          p.then(function() {\n            if (!hasCallback) {\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              // Usually candidates will be emitted earlier.\n              window.setTimeout(self._emitBufferedCandidates.bind(self), 500);\n            }\n          });\n          return p;\n        };\n\n    window.RTCPeerConnection.prototype.setRemoteDescription =\n        function(description) {\n          var self = this;\n          var stream = new MediaStream();\n          var receiverList = [];\n          var sections = SDPUtils.splitSections(description.sdp);\n          var sessionpart = sections.shift();\n          var isIceLite = SDPUtils.matchPrefix(sessionpart,\n              'a=ice-lite').length > 0;\n          this.usingBundle = SDPUtils.matchPrefix(sessionpart,\n              'a=group:BUNDLE ').length > 0;\n          sections.forEach(function(mediaSection, sdpMLineIndex) {\n            var lines = SDPUtils.splitLines(mediaSection);\n            var mline = lines[0].substr(2).split(' ');\n            var kind = mline[0];\n            var rejected = mline[1] === '0';\n            var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n\n            var transceiver;\n            var iceGatherer;\n            var iceTransport;\n            var dtlsTransport;\n            var rtpSender;\n            var rtpReceiver;\n            var sendEncodingParameters;\n            var recvEncodingParameters;\n            var localCapabilities;\n\n            var track;\n            // FIXME: ensure the mediaSection has rtcp-mux set.\n            var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n            var remoteIceParameters;\n            var remoteDtlsParameters;\n            if (!rejected) {\n              remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters.role = 'client';\n            }\n            recvEncodingParameters =\n                SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n            var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:');\n            if (mid.length) {\n              mid = mid[0].substr(6);\n            } else {\n              mid = SDPUtils.generateIdentifier();\n            }\n\n            var cname;\n            // Gets the first SSRC. Note that with RTX there might be multiple\n            // SSRCs.\n            var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n                .map(function(line) {\n                  return SDPUtils.parseSsrcMedia(line);\n                })\n                .filter(function(obj) {\n                  return obj.attribute === 'cname';\n                })[0];\n            if (remoteSsrc) {\n              cname = remoteSsrc.value;\n            }\n\n            var isComplete = SDPUtils.matchPrefix(mediaSection,\n                'a=end-of-candidates').length > 0;\n            var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                .map(function(cand) {\n                  return SDPUtils.parseCandidate(cand);\n                })\n                .filter(function(cand) {\n                  return cand.component === '1';\n                });\n            if (description.type === 'offer' && !rejected) {\n              var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n                iceGatherer: self.transceivers[0].iceGatherer,\n                iceTransport: self.transceivers[0].iceTransport,\n                dtlsTransport: self.transceivers[0].dtlsTransport\n              } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n              if (isComplete) {\n                transports.iceTransport.setRemoteCandidates(cands);\n              }\n\n              localCapabilities = RTCRtpReceiver.getCapabilities(kind);\n              sendEncodingParameters = [{\n                ssrc: (2 * sdpMLineIndex + 2) * 1001\n              }];\n\n              rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n\n              track = rtpReceiver.track;\n              receiverList.push([track, rtpReceiver]);\n              // FIXME: not correct when there are multiple streams but that is\n              // not currently supported in this shim.\n              stream.addTrack(track);\n\n              // FIXME: look at direction.\n              if (self.localStreams.length > 0 &&\n                  self.localStreams[0].getTracks().length >= sdpMLineIndex) {\n                // FIXME: actually more complicated, needs to match types etc\n                var localtrack = self.localStreams[0]\n                    .getTracks()[sdpMLineIndex];\n                rtpSender = new RTCRtpSender(localtrack,\n                    transports.dtlsTransport);\n              }\n\n              self.transceivers[sdpMLineIndex] = {\n                iceGatherer: transports.iceGatherer,\n                iceTransport: transports.iceTransport,\n                dtlsTransport: transports.dtlsTransport,\n                localCapabilities: localCapabilities,\n                remoteCapabilities: remoteCapabilities,\n                rtpSender: rtpSender,\n                rtpReceiver: rtpReceiver,\n                kind: kind,\n                mid: mid,\n                cname: cname,\n                sendEncodingParameters: sendEncodingParameters,\n                recvEncodingParameters: recvEncodingParameters\n              };\n              // Start the RTCRtpReceiver now. The RTPSender is started in\n              // setLocalDescription.\n              self._transceive(self.transceivers[sdpMLineIndex],\n                  false,\n                  direction === 'sendrecv' || direction === 'sendonly');\n            } else if (description.type === 'answer' && !rejected) {\n              transceiver = self.transceivers[sdpMLineIndex];\n              iceGatherer = transceiver.iceGatherer;\n              iceTransport = transceiver.iceTransport;\n              dtlsTransport = transceiver.dtlsTransport;\n              rtpSender = transceiver.rtpSender;\n              rtpReceiver = transceiver.rtpReceiver;\n              sendEncodingParameters = transceiver.sendEncodingParameters;\n              localCapabilities = transceiver.localCapabilities;\n\n              self.transceivers[sdpMLineIndex].recvEncodingParameters =\n                  recvEncodingParameters;\n              self.transceivers[sdpMLineIndex].remoteCapabilities =\n                  remoteCapabilities;\n              self.transceivers[sdpMLineIndex].cname = cname;\n\n              if ((isIceLite || isComplete) && cands.length) {\n                iceTransport.setRemoteCandidates(cands);\n              }\n              if (!self.usingBundle || sdpMLineIndex === 0) {\n                iceTransport.start(iceGatherer, remoteIceParameters,\n                    'controlling');\n                dtlsTransport.start(remoteDtlsParameters);\n              }\n\n              self._transceive(transceiver,\n                  direction === 'sendrecv' || direction === 'recvonly',\n                  direction === 'sendrecv' || direction === 'sendonly');\n\n              if (rtpReceiver &&\n                  (direction === 'sendrecv' || direction === 'sendonly')) {\n                track = rtpReceiver.track;\n                receiverList.push([track, rtpReceiver]);\n                stream.addTrack(track);\n              } else {\n                // FIXME: actually the receiver should be created later.\n                delete transceiver.rtpReceiver;\n              }\n            }\n          });\n\n          this.remoteDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-remote-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n          if (stream.getTracks().length) {\n            self.remoteStreams.push(stream);\n            window.setTimeout(function() {\n              var event = new Event('addstream');\n              event.stream = stream;\n              self.dispatchEvent(event);\n              if (self.onaddstream !== null) {\n                window.setTimeout(function() {\n                  self.onaddstream(event);\n                }, 0);\n              }\n\n              receiverList.forEach(function(item) {\n                var track = item[0];\n                var receiver = item[1];\n                var trackEvent = new Event('track');\n                trackEvent.track = track;\n                trackEvent.receiver = receiver;\n                trackEvent.streams = [stream];\n                self.dispatchEvent(event);\n                if (self.ontrack !== null) {\n                  window.setTimeout(function() {\n                    self.ontrack(trackEvent);\n                  }, 0);\n                }\n              });\n            }, 0);\n          }\n          if (arguments.length > 1 && typeof arguments[1] === 'function') {\n            window.setTimeout(arguments[1], 0);\n          }\n          return Promise.resolve();\n        };\n\n    window.RTCPeerConnection.prototype.close = function() {\n      this.transceivers.forEach(function(transceiver) {\n        /* not yet\n        if (transceiver.iceGatherer) {\n          transceiver.iceGatherer.close();\n        }\n        */\n        if (transceiver.iceTransport) {\n          transceiver.iceTransport.stop();\n        }\n        if (transceiver.dtlsTransport) {\n          transceiver.dtlsTransport.stop();\n        }\n        if (transceiver.rtpSender) {\n          transceiver.rtpSender.stop();\n        }\n        if (transceiver.rtpReceiver) {\n          transceiver.rtpReceiver.stop();\n        }\n      });\n      // FIXME: clean up tracks, local streams, remote streams, etc\n      this._updateSignalingState('closed');\n    };\n\n    // Update the signaling state.\n    window.RTCPeerConnection.prototype._updateSignalingState =\n        function(newState) {\n          this.signalingState = newState;\n          var event = new Event('signalingstatechange');\n          this.dispatchEvent(event);\n          if (this.onsignalingstatechange !== null) {\n            this.onsignalingstatechange(event);\n          }\n        };\n\n    // Determine whether to fire the negotiationneeded event.\n    window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded =\n        function() {\n          // Fire away (for now).\n          var event = new Event('negotiationneeded');\n          this.dispatchEvent(event);\n          if (this.onnegotiationneeded !== null) {\n            this.onnegotiationneeded(event);\n          }\n        };\n\n    // Update the connection state.\n    window.RTCPeerConnection.prototype._updateConnectionState = function() {\n      var self = this;\n      var newState;\n      var states = {\n        'new': 0,\n        closed: 0,\n        connecting: 0,\n        checking: 0,\n        connected: 0,\n        completed: 0,\n        failed: 0\n      };\n      this.transceivers.forEach(function(transceiver) {\n        states[transceiver.iceTransport.state]++;\n        states[transceiver.dtlsTransport.state]++;\n      });\n      // ICETransport.completed and connected are the same for this purpose.\n      states.connected += states.completed;\n\n      newState = 'new';\n      if (states.failed > 0) {\n        newState = 'failed';\n      } else if (states.connecting > 0 || states.checking > 0) {\n        newState = 'connecting';\n      } else if (states.disconnected > 0) {\n        newState = 'disconnected';\n      } else if (states.new > 0) {\n        newState = 'new';\n      } else if (states.connected > 0 || states.completed > 0) {\n        newState = 'connected';\n      }\n\n      if (newState !== self.iceConnectionState) {\n        self.iceConnectionState = newState;\n        var event = new Event('iceconnectionstatechange');\n        this.dispatchEvent(event);\n        if (this.oniceconnectionstatechange !== null) {\n          this.oniceconnectionstatechange(event);\n        }\n      }\n    };\n\n    window.RTCPeerConnection.prototype.createOffer = function() {\n      var self = this;\n      if (this._pendingOffer) {\n        throw new Error('createOffer called while there is a pending offer.');\n      }\n      var offerOptions;\n      if (arguments.length === 1 && typeof arguments[0] !== 'function') {\n        offerOptions = arguments[0];\n      } else if (arguments.length === 3) {\n        offerOptions = arguments[2];\n      }\n\n      var tracks = [];\n      var numAudioTracks = 0;\n      var numVideoTracks = 0;\n      // Default to sendrecv.\n      if (this.localStreams.length) {\n        numAudioTracks = this.localStreams[0].getAudioTracks().length;\n        numVideoTracks = this.localStreams[0].getVideoTracks().length;\n      }\n      // Determine number of audio and video tracks we need to send/recv.\n      if (offerOptions) {\n        // Reject Chrome legacy constraints.\n        if (offerOptions.mandatory || offerOptions.optional) {\n          throw new TypeError(\n              'Legacy mandatory/optional constraints not supported.');\n        }\n        if (offerOptions.offerToReceiveAudio !== undefined) {\n          numAudioTracks = offerOptions.offerToReceiveAudio;\n        }\n        if (offerOptions.offerToReceiveVideo !== undefined) {\n          numVideoTracks = offerOptions.offerToReceiveVideo;\n        }\n      }\n      if (this.localStreams.length) {\n        // Push local streams.\n        this.localStreams[0].getTracks().forEach(function(track) {\n          tracks.push({\n            kind: track.kind,\n            track: track,\n            wantReceive: track.kind === 'audio' ?\n                numAudioTracks > 0 : numVideoTracks > 0\n          });\n          if (track.kind === 'audio') {\n            numAudioTracks--;\n          } else if (track.kind === 'video') {\n            numVideoTracks--;\n          }\n        });\n      }\n      // Create M-lines for recvonly streams.\n      while (numAudioTracks > 0 || numVideoTracks > 0) {\n        if (numAudioTracks > 0) {\n          tracks.push({\n            kind: 'audio',\n            wantReceive: true\n          });\n          numAudioTracks--;\n        }\n        if (numVideoTracks > 0) {\n          tracks.push({\n            kind: 'video',\n            wantReceive: true\n          });\n          numVideoTracks--;\n        }\n      }\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      var transceivers = [];\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        // For each track, create an ice gatherer, ice transport,\n        // dtls transport, potentially rtpsender and rtpreceiver.\n        var track = mline.track;\n        var kind = mline.kind;\n        var mid = SDPUtils.generateIdentifier();\n\n        var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n          iceGatherer: transceivers[0].iceGatherer,\n          iceTransport: transceivers[0].iceTransport,\n          dtlsTransport: transceivers[0].dtlsTransport\n        } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n        var localCapabilities = RTCRtpSender.getCapabilities(kind);\n        var rtpSender;\n        var rtpReceiver;\n\n        // generate an ssrc now, to be used later in rtpSender.send\n        var sendEncodingParameters = [{\n          ssrc: (2 * sdpMLineIndex + 1) * 1001\n        }];\n        if (track) {\n          rtpSender = new RTCRtpSender(track, transports.dtlsTransport);\n        }\n\n        if (mline.wantReceive) {\n          rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n        }\n\n        transceivers[sdpMLineIndex] = {\n          iceGatherer: transports.iceGatherer,\n          iceTransport: transports.iceTransport,\n          dtlsTransport: transports.dtlsTransport,\n          localCapabilities: localCapabilities,\n          remoteCapabilities: null,\n          rtpSender: rtpSender,\n          rtpReceiver: rtpReceiver,\n          kind: kind,\n          mid: mid,\n          sendEncodingParameters: sendEncodingParameters,\n          recvEncodingParameters: null\n        };\n      });\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        var transceiver = transceivers[sdpMLineIndex];\n        sdp += SDPUtils.writeMediaSection(transceiver,\n            transceiver.localCapabilities, 'offer', self.localStreams[0]);\n      });\n\n      this._pendingOffer = transceivers;\n      var desc = new RTCSessionDescription({\n        type: 'offer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.createAnswer = function() {\n      var self = this;\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      this.transceivers.forEach(function(transceiver) {\n        // Calculate intersection of capabilities.\n        var commonCapabilities = self._getCommonCapabilities(\n            transceiver.localCapabilities,\n            transceiver.remoteCapabilities);\n\n        sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities,\n            'answer', self.localStreams[0]);\n      });\n\n      var desc = new RTCSessionDescription({\n        type: 'answer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n      if (candidate === null) {\n        this.transceivers.forEach(function(transceiver) {\n          transceiver.iceTransport.addRemoteCandidate({});\n        });\n      } else {\n        var mLineIndex = candidate.sdpMLineIndex;\n        if (candidate.sdpMid) {\n          for (var i = 0; i < this.transceivers.length; i++) {\n            if (this.transceivers[i].mid === candidate.sdpMid) {\n              mLineIndex = i;\n              break;\n            }\n          }\n        }\n        var transceiver = this.transceivers[mLineIndex];\n        if (transceiver) {\n          var cand = Object.keys(candidate.candidate).length > 0 ?\n              SDPUtils.parseCandidate(candidate.candidate) : {};\n          // Ignore Chrome's invalid candidates since Edge does not like them.\n          if (cand.protocol === 'tcp' && cand.port === 0) {\n            return;\n          }\n          // Ignore RTCP candidates, we assume RTCP-MUX.\n          if (cand.component !== '1') {\n            return;\n          }\n          // A dirty hack to make samples work.\n          if (cand.type === 'endOfCandidates') {\n            cand = {};\n          }\n          transceiver.iceTransport.addRemoteCandidate(cand);\n\n          // update the remoteDescription.\n          var sections = SDPUtils.splitSections(this.remoteDescription.sdp);\n          sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim()\n              : 'a=end-of-candidates') + '\\r\\n';\n          this.remoteDescription.sdp = sections.join('');\n        }\n      }\n      if (arguments.length > 1 && typeof arguments[1] === 'function') {\n        window.setTimeout(arguments[1], 0);\n      }\n      return Promise.resolve();\n    };\n\n    window.RTCPeerConnection.prototype.getStats = function() {\n      var promises = [];\n      this.transceivers.forEach(function(transceiver) {\n        ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n            'dtlsTransport'].forEach(function(method) {\n              if (transceiver[method]) {\n                promises.push(transceiver[method].getStats());\n              }\n            });\n      });\n      var cb = arguments.length > 1 && typeof arguments[1] === 'function' &&\n          arguments[1];\n      return new Promise(function(resolve) {\n        // shim getStats with maplike support\n        var results = new Map();\n        Promise.all(promises).then(function(res) {\n          res.forEach(function(result) {\n            Object.keys(result).forEach(function(id) {\n              results.set(id, result[id]);\n              results[id] = result[id];\n            });\n          });\n          if (cb) {\n            window.setTimeout(cb, 0, results);\n          }\n          resolve(results);\n        });\n      });\n    };\n  },\n\n  // Attach a media stream to an element.\n  attachMediaStream: function(element, stream) {\n    logging('DEPRECATED, attachMediaStream will soon be removed.');\n    element.srcObject = stream;\n  },\n\n  reattachMediaStream: function(to, from) {\n    logging('DEPRECATED, reattachMediaStream will soon be removed.');\n    to.srcObject = from.srcObject;\n  }\n};\n\n// Expose public methods.\nmodule.exports = {\n  shimPeerConnection: edgeShim.shimPeerConnection,\n  shimGetUserMedia: __webpack_require__(453),\n  attachMediaStream: edgeShim.attachMediaStream,\n  reattachMediaStream: edgeShim.reattachMediaStream\n};\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"451.js","sources":["/home/ubuntu/workspace/node_modules/localmedia/node_modules/webrtc-adapter/src/js/edge/edge_shim.js"],"sourcesContent":["/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = require('sdp');\nvar logging = require('../utils').log;\n\nvar edgeShim = {\n  shimPeerConnection: function() {\n    if (window.RTCIceGatherer) {\n      // ORTC defines an RTCIceCandidate object but no constructor.\n      // Not implemented in Edge.\n      if (!window.RTCIceCandidate) {\n        window.RTCIceCandidate = function(args) {\n          return args;\n        };\n      }\n      // ORTC does not have a session description object but\n      // other browsers (i.e. Chrome) that will support both PC and ORTC\n      // in the future might have this defined already.\n      if (!window.RTCSessionDescription) {\n        window.RTCSessionDescription = function(args) {\n          return args;\n        };\n      }\n    }\n\n    window.RTCPeerConnection = function(config) {\n      var self = this;\n\n      var _eventTarget = document.createDocumentFragment();\n      ['addEventListener', 'removeEventListener', 'dispatchEvent']\n          .forEach(function(method) {\n            self[method] = _eventTarget[method].bind(_eventTarget);\n          });\n\n      this.onicecandidate = null;\n      this.onaddstream = null;\n      this.ontrack = null;\n      this.onremovestream = null;\n      this.onsignalingstatechange = null;\n      this.oniceconnectionstatechange = null;\n      this.onnegotiationneeded = null;\n      this.ondatachannel = null;\n\n      this.localStreams = [];\n      this.remoteStreams = [];\n      this.getLocalStreams = function() {\n        return self.localStreams;\n      };\n      this.getRemoteStreams = function() {\n        return self.remoteStreams;\n      };\n\n      this.localDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.remoteDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.signalingState = 'stable';\n      this.iceConnectionState = 'new';\n      this.iceGatheringState = 'new';\n\n      this.iceOptions = {\n        gatherPolicy: 'all',\n        iceServers: []\n      };\n      if (config && config.iceTransportPolicy) {\n        switch (config.iceTransportPolicy) {\n          case 'all':\n          case 'relay':\n            this.iceOptions.gatherPolicy = config.iceTransportPolicy;\n            break;\n          case 'none':\n            // FIXME: remove once implementation and spec have added this.\n            throw new TypeError('iceTransportPolicy \"none\" not supported');\n          default:\n            // don't set iceTransportPolicy.\n            break;\n        }\n      }\n      this.usingBundle = config && config.bundlePolicy === 'max-bundle';\n\n      if (config && config.iceServers) {\n        // Edge does not like\n        // 1) stun:\n        // 2) turn: that does not have all of turn:host:port?transport=udp\n        var iceServers = JSON.parse(JSON.stringify(config.iceServers));\n        this.iceOptions.iceServers = iceServers.filter(function(server) {\n          if (server && server.urls) {\n            var urls = server.urls;\n            if (typeof urls === 'string') {\n              urls = [urls];\n            }\n            urls = urls.filter(function(url) {\n              return url.indexOf('turn:') === 0 &&\n                  url.indexOf('transport=udp') !== -1;\n            })[0];\n            return !!urls;\n          }\n          return false;\n        });\n      }\n\n      // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n      // everything that is needed to describe a SDP m-line.\n      this.transceivers = [];\n\n      // since the iceGatherer is currently created in createOffer but we\n      // must not emit candidates until after setLocalDescription we buffer\n      // them in this array.\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype._emitBufferedCandidates = function() {\n      var self = this;\n      var sections = SDPUtils.splitSections(self.localDescription.sdp);\n      // FIXME: need to apply ice candidates in a way which is async but\n      // in-order\n      this._localIceCandidatesBuffer.forEach(function(event) {\n        var end = !event.candidate || Object.keys(event.candidate).length === 0;\n        if (end) {\n          for (var j = 1; j < sections.length; j++) {\n            if (sections[j].indexOf('\\r\\na=end-of-candidates\\r\\n') === -1) {\n              sections[j] += 'a=end-of-candidates\\r\\n';\n            }\n          }\n        } else if (event.candidate.candidate.indexOf('typ endOfCandidates')\n            === -1) {\n          sections[event.candidate.sdpMLineIndex + 1] +=\n              'a=' + event.candidate.candidate + '\\r\\n';\n        }\n        self.localDescription.sdp = sections.join('');\n        self.dispatchEvent(event);\n        if (self.onicecandidate !== null) {\n          self.onicecandidate(event);\n        }\n        if (!event.candidate && self.iceGatheringState !== 'complete') {\n          var complete = self.transceivers.every(function(transceiver) {\n            return transceiver.iceGatherer &&\n                transceiver.iceGatherer.state === 'completed';\n          });\n          if (complete) {\n            self.iceGatheringState = 'complete';\n          }\n        }\n      });\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype.addStream = function(stream) {\n      // Clone is necessary for local demos mostly, attaching directly\n      // to two different senders does not work (build 10547).\n      this.localStreams.push(stream.clone());\n      this._maybeFireNegotiationNeeded();\n    };\n\n    window.RTCPeerConnection.prototype.removeStream = function(stream) {\n      var idx = this.localStreams.indexOf(stream);\n      if (idx > -1) {\n        this.localStreams.splice(idx, 1);\n        this._maybeFireNegotiationNeeded();\n      }\n    };\n\n    window.RTCPeerConnection.prototype.getSenders = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpSender;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpSender;\n      });\n    };\n\n    window.RTCPeerConnection.prototype.getReceivers = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpReceiver;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpReceiver;\n      });\n    };\n\n    // Determines the intersection of local and remote capabilities.\n    window.RTCPeerConnection.prototype._getCommonCapabilities =\n        function(localCapabilities, remoteCapabilities) {\n          var commonCapabilities = {\n            codecs: [],\n            headerExtensions: [],\n            fecMechanisms: []\n          };\n          localCapabilities.codecs.forEach(function(lCodec) {\n            for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n              var rCodec = remoteCapabilities.codecs[i];\n              if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n                  lCodec.clockRate === rCodec.clockRate &&\n                  lCodec.numChannels === rCodec.numChannels) {\n                // push rCodec so we reply with offerer payload type\n                commonCapabilities.codecs.push(rCodec);\n\n                // FIXME: also need to determine intersection between\n                // .rtcpFeedback and .parameters\n                break;\n              }\n            }\n          });\n\n          localCapabilities.headerExtensions\n              .forEach(function(lHeaderExtension) {\n                for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n                     i++) {\n                  var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n                  if (lHeaderExtension.uri === rHeaderExtension.uri) {\n                    commonCapabilities.headerExtensions.push(rHeaderExtension);\n                    break;\n                  }\n                }\n              });\n\n          // FIXME: fecMechanisms\n          return commonCapabilities;\n        };\n\n    // Create ICE gatherer, ICE transport and DTLS transport.\n    window.RTCPeerConnection.prototype._createIceAndDtlsTransports =\n        function(mid, sdpMLineIndex) {\n          var self = this;\n          var iceGatherer = new RTCIceGatherer(self.iceOptions);\n          var iceTransport = new RTCIceTransport(iceGatherer);\n          iceGatherer.onlocalcandidate = function(evt) {\n            var event = new Event('icecandidate');\n            event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n            var cand = evt.candidate;\n            var end = !cand || Object.keys(cand).length === 0;\n            // Edge emits an empty object for RTCIceCandidateComplete‥\n            if (end) {\n              // polyfill since RTCIceGatherer.state is not implemented in\n              // Edge 10547 yet.\n              if (iceGatherer.state === undefined) {\n                iceGatherer.state = 'completed';\n              }\n\n              // Emit a candidate with type endOfCandidates to make the samples\n              // work. Edge requires addIceCandidate with this empty candidate\n              // to start checking. The real solution is to signal\n              // end-of-candidates to the other side when getting the null\n              // candidate but some apps (like the samples) don't do that.\n              event.candidate.candidate =\n                  'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates';\n            } else {\n              // RTCIceCandidate doesn't have a component, needs to be added\n              cand.component = iceTransport.component === 'RTCP' ? 2 : 1;\n              event.candidate.candidate = SDPUtils.writeCandidate(cand);\n            }\n\n            // update local description.\n            var sections = SDPUtils.splitSections(self.localDescription.sdp);\n            if (event.candidate.candidate.indexOf('typ endOfCandidates')\n                === -1) {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=' + event.candidate.candidate + '\\r\\n';\n            } else {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=end-of-candidates\\r\\n';\n            }\n            self.localDescription.sdp = sections.join('');\n\n            var complete = self.transceivers.every(function(transceiver) {\n              return transceiver.iceGatherer &&\n                  transceiver.iceGatherer.state === 'completed';\n            });\n\n            // Emit candidate if localDescription is set.\n            // Also emits null candidate when all gatherers are complete.\n            switch (self.iceGatheringState) {\n              case 'new':\n                self._localIceCandidatesBuffer.push(event);\n                if (end && complete) {\n                  self._localIceCandidatesBuffer.push(\n                      new Event('icecandidate'));\n                }\n                break;\n              case 'gathering':\n                self._emitBufferedCandidates();\n                self.dispatchEvent(event);\n                if (self.onicecandidate !== null) {\n                  self.onicecandidate(event);\n                }\n                if (complete) {\n                  self.dispatchEvent(new Event('icecandidate'));\n                  if (self.onicecandidate !== null) {\n                    self.onicecandidate(new Event('icecandidate'));\n                  }\n                  self.iceGatheringState = 'complete';\n                }\n                break;\n              case 'complete':\n                // should not happen... currently!\n                break;\n              default: // no-op.\n                break;\n            }\n          };\n          iceTransport.onicestatechange = function() {\n            self._updateConnectionState();\n          };\n\n          var dtlsTransport = new RTCDtlsTransport(iceTransport);\n          dtlsTransport.ondtlsstatechange = function() {\n            self._updateConnectionState();\n          };\n          dtlsTransport.onerror = function() {\n            // onerror does not set state to failed by itself.\n            dtlsTransport.state = 'failed';\n            self._updateConnectionState();\n          };\n\n          return {\n            iceGatherer: iceGatherer,\n            iceTransport: iceTransport,\n            dtlsTransport: dtlsTransport\n          };\n        };\n\n    // Start the RTP Sender and Receiver for a transceiver.\n    window.RTCPeerConnection.prototype._transceive = function(transceiver,\n        send, recv) {\n      var params = this._getCommonCapabilities(transceiver.localCapabilities,\n          transceiver.remoteCapabilities);\n      if (send && transceiver.rtpSender) {\n        params.encodings = transceiver.sendEncodingParameters;\n        params.rtcp = {\n          cname: SDPUtils.localCName\n        };\n        if (transceiver.recvEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpSender.send(params);\n      }\n      if (recv && transceiver.rtpReceiver) {\n        params.encodings = transceiver.recvEncodingParameters;\n        params.rtcp = {\n          cname: transceiver.cname\n        };\n        if (transceiver.sendEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpReceiver.receive(params);\n      }\n    };\n\n    window.RTCPeerConnection.prototype.setLocalDescription =\n        function(description) {\n          var self = this;\n          var sections;\n          var sessionpart;\n          if (description.type === 'offer') {\n            // FIXME: What was the purpose of this empty if statement?\n            // if (!this._pendingOffer) {\n            // } else {\n            if (this._pendingOffer) {\n              // VERY limited support for SDP munging. Limited to:\n              // * changing the order of codecs\n              sections = SDPUtils.splitSections(description.sdp);\n              sessionpart = sections.shift();\n              sections.forEach(function(mediaSection, sdpMLineIndex) {\n                var caps = SDPUtils.parseRtpParameters(mediaSection);\n                self._pendingOffer[sdpMLineIndex].localCapabilities = caps;\n              });\n              this.transceivers = this._pendingOffer;\n              delete this._pendingOffer;\n            }\n          } else if (description.type === 'answer') {\n            sections = SDPUtils.splitSections(self.remoteDescription.sdp);\n            sessionpart = sections.shift();\n            var isIceLite = SDPUtils.matchPrefix(sessionpart,\n                'a=ice-lite').length > 0;\n            sections.forEach(function(mediaSection, sdpMLineIndex) {\n              var transceiver = self.transceivers[sdpMLineIndex];\n              var iceGatherer = transceiver.iceGatherer;\n              var iceTransport = transceiver.iceTransport;\n              var dtlsTransport = transceiver.dtlsTransport;\n              var localCapabilities = transceiver.localCapabilities;\n              var remoteCapabilities = transceiver.remoteCapabilities;\n              var rejected = mediaSection.split('\\n', 1)[0]\n                  .split(' ', 2)[1] === '0';\n\n              if (!rejected) {\n                var remoteIceParameters = SDPUtils.getIceParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                  .map(function(cand) {\n                    return SDPUtils.parseCandidate(cand);\n                  })\n                  .filter(function(cand) {\n                    return cand.component === '1';\n                  });\n                  // ice-lite only includes host candidates in the SDP so we can\n                  // use setRemoteCandidates (which implies an\n                  // RTCIceCandidateComplete)\n                  if (cands.length) {\n                    iceTransport.setRemoteCandidates(cands);\n                  }\n                }\n                var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  remoteDtlsParameters.role = 'server';\n                }\n\n                if (!self.usingBundle || sdpMLineIndex === 0) {\n                  iceTransport.start(iceGatherer, remoteIceParameters,\n                      isIceLite ? 'controlling' : 'controlled');\n                  dtlsTransport.start(remoteDtlsParameters);\n                }\n\n                // Calculate intersection of capabilities.\n                var params = self._getCommonCapabilities(localCapabilities,\n                    remoteCapabilities);\n\n                // Start the RTCRtpSender. The RTCRtpReceiver for this\n                // transceiver has already been started in setRemoteDescription.\n                self._transceive(transceiver,\n                    params.codecs.length > 0,\n                    false);\n              }\n            });\n          }\n\n          this.localDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-local-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n\n          // If a success callback was provided, emit ICE candidates after it\n          // has been executed. Otherwise, emit callback after the Promise is\n          // resolved.\n          var hasCallback = arguments.length > 1 &&\n            typeof arguments[1] === 'function';\n          if (hasCallback) {\n            var cb = arguments[1];\n            window.setTimeout(function() {\n              cb();\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              self._emitBufferedCandidates();\n            }, 0);\n          }\n          var p = Promise.resolve();\n          p.then(function() {\n            if (!hasCallback) {\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              // Usually candidates will be emitted earlier.\n              window.setTimeout(self._emitBufferedCandidates.bind(self), 500);\n            }\n          });\n          return p;\n        };\n\n    window.RTCPeerConnection.prototype.setRemoteDescription =\n        function(description) {\n          var self = this;\n          var stream = new MediaStream();\n          var receiverList = [];\n          var sections = SDPUtils.splitSections(description.sdp);\n          var sessionpart = sections.shift();\n          var isIceLite = SDPUtils.matchPrefix(sessionpart,\n              'a=ice-lite').length > 0;\n          this.usingBundle = SDPUtils.matchPrefix(sessionpart,\n              'a=group:BUNDLE ').length > 0;\n          sections.forEach(function(mediaSection, sdpMLineIndex) {\n            var lines = SDPUtils.splitLines(mediaSection);\n            var mline = lines[0].substr(2).split(' ');\n            var kind = mline[0];\n            var rejected = mline[1] === '0';\n            var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n\n            var transceiver;\n            var iceGatherer;\n            var iceTransport;\n            var dtlsTransport;\n            var rtpSender;\n            var rtpReceiver;\n            var sendEncodingParameters;\n            var recvEncodingParameters;\n            var localCapabilities;\n\n            var track;\n            // FIXME: ensure the mediaSection has rtcp-mux set.\n            var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n            var remoteIceParameters;\n            var remoteDtlsParameters;\n            if (!rejected) {\n              remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters.role = 'client';\n            }\n            recvEncodingParameters =\n                SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n            var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:');\n            if (mid.length) {\n              mid = mid[0].substr(6);\n            } else {\n              mid = SDPUtils.generateIdentifier();\n            }\n\n            var cname;\n            // Gets the first SSRC. Note that with RTX there might be multiple\n            // SSRCs.\n            var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n                .map(function(line) {\n                  return SDPUtils.parseSsrcMedia(line);\n                })\n                .filter(function(obj) {\n                  return obj.attribute === 'cname';\n                })[0];\n            if (remoteSsrc) {\n              cname = remoteSsrc.value;\n            }\n\n            var isComplete = SDPUtils.matchPrefix(mediaSection,\n                'a=end-of-candidates').length > 0;\n            var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                .map(function(cand) {\n                  return SDPUtils.parseCandidate(cand);\n                })\n                .filter(function(cand) {\n                  return cand.component === '1';\n                });\n            if (description.type === 'offer' && !rejected) {\n              var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n                iceGatherer: self.transceivers[0].iceGatherer,\n                iceTransport: self.transceivers[0].iceTransport,\n                dtlsTransport: self.transceivers[0].dtlsTransport\n              } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n              if (isComplete) {\n                transports.iceTransport.setRemoteCandidates(cands);\n              }\n\n              localCapabilities = RTCRtpReceiver.getCapabilities(kind);\n              sendEncodingParameters = [{\n                ssrc: (2 * sdpMLineIndex + 2) * 1001\n              }];\n\n              rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n\n              track = rtpReceiver.track;\n              receiverList.push([track, rtpReceiver]);\n              // FIXME: not correct when there are multiple streams but that is\n              // not currently supported in this shim.\n              stream.addTrack(track);\n\n              // FIXME: look at direction.\n              if (self.localStreams.length > 0 &&\n                  self.localStreams[0].getTracks().length >= sdpMLineIndex) {\n                // FIXME: actually more complicated, needs to match types etc\n                var localtrack = self.localStreams[0]\n                    .getTracks()[sdpMLineIndex];\n                rtpSender = new RTCRtpSender(localtrack,\n                    transports.dtlsTransport);\n              }\n\n              self.transceivers[sdpMLineIndex] = {\n                iceGatherer: transports.iceGatherer,\n                iceTransport: transports.iceTransport,\n                dtlsTransport: transports.dtlsTransport,\n                localCapabilities: localCapabilities,\n                remoteCapabilities: remoteCapabilities,\n                rtpSender: rtpSender,\n                rtpReceiver: rtpReceiver,\n                kind: kind,\n                mid: mid,\n                cname: cname,\n                sendEncodingParameters: sendEncodingParameters,\n                recvEncodingParameters: recvEncodingParameters\n              };\n              // Start the RTCRtpReceiver now. The RTPSender is started in\n              // setLocalDescription.\n              self._transceive(self.transceivers[sdpMLineIndex],\n                  false,\n                  direction === 'sendrecv' || direction === 'sendonly');\n            } else if (description.type === 'answer' && !rejected) {\n              transceiver = self.transceivers[sdpMLineIndex];\n              iceGatherer = transceiver.iceGatherer;\n              iceTransport = transceiver.iceTransport;\n              dtlsTransport = transceiver.dtlsTransport;\n              rtpSender = transceiver.rtpSender;\n              rtpReceiver = transceiver.rtpReceiver;\n              sendEncodingParameters = transceiver.sendEncodingParameters;\n              localCapabilities = transceiver.localCapabilities;\n\n              self.transceivers[sdpMLineIndex].recvEncodingParameters =\n                  recvEncodingParameters;\n              self.transceivers[sdpMLineIndex].remoteCapabilities =\n                  remoteCapabilities;\n              self.transceivers[sdpMLineIndex].cname = cname;\n\n              if ((isIceLite || isComplete) && cands.length) {\n                iceTransport.setRemoteCandidates(cands);\n              }\n              if (!self.usingBundle || sdpMLineIndex === 0) {\n                iceTransport.start(iceGatherer, remoteIceParameters,\n                    'controlling');\n                dtlsTransport.start(remoteDtlsParameters);\n              }\n\n              self._transceive(transceiver,\n                  direction === 'sendrecv' || direction === 'recvonly',\n                  direction === 'sendrecv' || direction === 'sendonly');\n\n              if (rtpReceiver &&\n                  (direction === 'sendrecv' || direction === 'sendonly')) {\n                track = rtpReceiver.track;\n                receiverList.push([track, rtpReceiver]);\n                stream.addTrack(track);\n              } else {\n                // FIXME: actually the receiver should be created later.\n                delete transceiver.rtpReceiver;\n              }\n            }\n          });\n\n          this.remoteDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-remote-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n          if (stream.getTracks().length) {\n            self.remoteStreams.push(stream);\n            window.setTimeout(function() {\n              var event = new Event('addstream');\n              event.stream = stream;\n              self.dispatchEvent(event);\n              if (self.onaddstream !== null) {\n                window.setTimeout(function() {\n                  self.onaddstream(event);\n                }, 0);\n              }\n\n              receiverList.forEach(function(item) {\n                var track = item[0];\n                var receiver = item[1];\n                var trackEvent = new Event('track');\n                trackEvent.track = track;\n                trackEvent.receiver = receiver;\n                trackEvent.streams = [stream];\n                self.dispatchEvent(event);\n                if (self.ontrack !== null) {\n                  window.setTimeout(function() {\n                    self.ontrack(trackEvent);\n                  }, 0);\n                }\n              });\n            }, 0);\n          }\n          if (arguments.length > 1 && typeof arguments[1] === 'function') {\n            window.setTimeout(arguments[1], 0);\n          }\n          return Promise.resolve();\n        };\n\n    window.RTCPeerConnection.prototype.close = function() {\n      this.transceivers.forEach(function(transceiver) {\n        /* not yet\n        if (transceiver.iceGatherer) {\n          transceiver.iceGatherer.close();\n        }\n        */\n        if (transceiver.iceTransport) {\n          transceiver.iceTransport.stop();\n        }\n        if (transceiver.dtlsTransport) {\n          transceiver.dtlsTransport.stop();\n        }\n        if (transceiver.rtpSender) {\n          transceiver.rtpSender.stop();\n        }\n        if (transceiver.rtpReceiver) {\n          transceiver.rtpReceiver.stop();\n        }\n      });\n      // FIXME: clean up tracks, local streams, remote streams, etc\n      this._updateSignalingState('closed');\n    };\n\n    // Update the signaling state.\n    window.RTCPeerConnection.prototype._updateSignalingState =\n        function(newState) {\n          this.signalingState = newState;\n          var event = new Event('signalingstatechange');\n          this.dispatchEvent(event);\n          if (this.onsignalingstatechange !== null) {\n            this.onsignalingstatechange(event);\n          }\n        };\n\n    // Determine whether to fire the negotiationneeded event.\n    window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded =\n        function() {\n          // Fire away (for now).\n          var event = new Event('negotiationneeded');\n          this.dispatchEvent(event);\n          if (this.onnegotiationneeded !== null) {\n            this.onnegotiationneeded(event);\n          }\n        };\n\n    // Update the connection state.\n    window.RTCPeerConnection.prototype._updateConnectionState = function() {\n      var self = this;\n      var newState;\n      var states = {\n        'new': 0,\n        closed: 0,\n        connecting: 0,\n        checking: 0,\n        connected: 0,\n        completed: 0,\n        failed: 0\n      };\n      this.transceivers.forEach(function(transceiver) {\n        states[transceiver.iceTransport.state]++;\n        states[transceiver.dtlsTransport.state]++;\n      });\n      // ICETransport.completed and connected are the same for this purpose.\n      states.connected += states.completed;\n\n      newState = 'new';\n      if (states.failed > 0) {\n        newState = 'failed';\n      } else if (states.connecting > 0 || states.checking > 0) {\n        newState = 'connecting';\n      } else if (states.disconnected > 0) {\n        newState = 'disconnected';\n      } else if (states.new > 0) {\n        newState = 'new';\n      } else if (states.connected > 0 || states.completed > 0) {\n        newState = 'connected';\n      }\n\n      if (newState !== self.iceConnectionState) {\n        self.iceConnectionState = newState;\n        var event = new Event('iceconnectionstatechange');\n        this.dispatchEvent(event);\n        if (this.oniceconnectionstatechange !== null) {\n          this.oniceconnectionstatechange(event);\n        }\n      }\n    };\n\n    window.RTCPeerConnection.prototype.createOffer = function() {\n      var self = this;\n      if (this._pendingOffer) {\n        throw new Error('createOffer called while there is a pending offer.');\n      }\n      var offerOptions;\n      if (arguments.length === 1 && typeof arguments[0] !== 'function') {\n        offerOptions = arguments[0];\n      } else if (arguments.length === 3) {\n        offerOptions = arguments[2];\n      }\n\n      var tracks = [];\n      var numAudioTracks = 0;\n      var numVideoTracks = 0;\n      // Default to sendrecv.\n      if (this.localStreams.length) {\n        numAudioTracks = this.localStreams[0].getAudioTracks().length;\n        numVideoTracks = this.localStreams[0].getVideoTracks().length;\n      }\n      // Determine number of audio and video tracks we need to send/recv.\n      if (offerOptions) {\n        // Reject Chrome legacy constraints.\n        if (offerOptions.mandatory || offerOptions.optional) {\n          throw new TypeError(\n              'Legacy mandatory/optional constraints not supported.');\n        }\n        if (offerOptions.offerToReceiveAudio !== undefined) {\n          numAudioTracks = offerOptions.offerToReceiveAudio;\n        }\n        if (offerOptions.offerToReceiveVideo !== undefined) {\n          numVideoTracks = offerOptions.offerToReceiveVideo;\n        }\n      }\n      if (this.localStreams.length) {\n        // Push local streams.\n        this.localStreams[0].getTracks().forEach(function(track) {\n          tracks.push({\n            kind: track.kind,\n            track: track,\n            wantReceive: track.kind === 'audio' ?\n                numAudioTracks > 0 : numVideoTracks > 0\n          });\n          if (track.kind === 'audio') {\n            numAudioTracks--;\n          } else if (track.kind === 'video') {\n            numVideoTracks--;\n          }\n        });\n      }\n      // Create M-lines for recvonly streams.\n      while (numAudioTracks > 0 || numVideoTracks > 0) {\n        if (numAudioTracks > 0) {\n          tracks.push({\n            kind: 'audio',\n            wantReceive: true\n          });\n          numAudioTracks--;\n        }\n        if (numVideoTracks > 0) {\n          tracks.push({\n            kind: 'video',\n            wantReceive: true\n          });\n          numVideoTracks--;\n        }\n      }\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      var transceivers = [];\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        // For each track, create an ice gatherer, ice transport,\n        // dtls transport, potentially rtpsender and rtpreceiver.\n        var track = mline.track;\n        var kind = mline.kind;\n        var mid = SDPUtils.generateIdentifier();\n\n        var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n          iceGatherer: transceivers[0].iceGatherer,\n          iceTransport: transceivers[0].iceTransport,\n          dtlsTransport: transceivers[0].dtlsTransport\n        } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n        var localCapabilities = RTCRtpSender.getCapabilities(kind);\n        var rtpSender;\n        var rtpReceiver;\n\n        // generate an ssrc now, to be used later in rtpSender.send\n        var sendEncodingParameters = [{\n          ssrc: (2 * sdpMLineIndex + 1) * 1001\n        }];\n        if (track) {\n          rtpSender = new RTCRtpSender(track, transports.dtlsTransport);\n        }\n\n        if (mline.wantReceive) {\n          rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n        }\n\n        transceivers[sdpMLineIndex] = {\n          iceGatherer: transports.iceGatherer,\n          iceTransport: transports.iceTransport,\n          dtlsTransport: transports.dtlsTransport,\n          localCapabilities: localCapabilities,\n          remoteCapabilities: null,\n          rtpSender: rtpSender,\n          rtpReceiver: rtpReceiver,\n          kind: kind,\n          mid: mid,\n          sendEncodingParameters: sendEncodingParameters,\n          recvEncodingParameters: null\n        };\n      });\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        var transceiver = transceivers[sdpMLineIndex];\n        sdp += SDPUtils.writeMediaSection(transceiver,\n            transceiver.localCapabilities, 'offer', self.localStreams[0]);\n      });\n\n      this._pendingOffer = transceivers;\n      var desc = new RTCSessionDescription({\n        type: 'offer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.createAnswer = function() {\n      var self = this;\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      this.transceivers.forEach(function(transceiver) {\n        // Calculate intersection of capabilities.\n        var commonCapabilities = self._getCommonCapabilities(\n            transceiver.localCapabilities,\n            transceiver.remoteCapabilities);\n\n        sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities,\n            'answer', self.localStreams[0]);\n      });\n\n      var desc = new RTCSessionDescription({\n        type: 'answer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n      if (candidate === null) {\n        this.transceivers.forEach(function(transceiver) {\n          transceiver.iceTransport.addRemoteCandidate({});\n        });\n      } else {\n        var mLineIndex = candidate.sdpMLineIndex;\n        if (candidate.sdpMid) {\n          for (var i = 0; i < this.transceivers.length; i++) {\n            if (this.transceivers[i].mid === candidate.sdpMid) {\n              mLineIndex = i;\n              break;\n            }\n          }\n        }\n        var transceiver = this.transceivers[mLineIndex];\n        if (transceiver) {\n          var cand = Object.keys(candidate.candidate).length > 0 ?\n              SDPUtils.parseCandidate(candidate.candidate) : {};\n          // Ignore Chrome's invalid candidates since Edge does not like them.\n          if (cand.protocol === 'tcp' && cand.port === 0) {\n            return;\n          }\n          // Ignore RTCP candidates, we assume RTCP-MUX.\n          if (cand.component !== '1') {\n            return;\n          }\n          // A dirty hack to make samples work.\n          if (cand.type === 'endOfCandidates') {\n            cand = {};\n          }\n          transceiver.iceTransport.addRemoteCandidate(cand);\n\n          // update the remoteDescription.\n          var sections = SDPUtils.splitSections(this.remoteDescription.sdp);\n          sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim()\n              : 'a=end-of-candidates') + '\\r\\n';\n          this.remoteDescription.sdp = sections.join('');\n        }\n      }\n      if (arguments.length > 1 && typeof arguments[1] === 'function') {\n        window.setTimeout(arguments[1], 0);\n      }\n      return Promise.resolve();\n    };\n\n    window.RTCPeerConnection.prototype.getStats = function() {\n      var promises = [];\n      this.transceivers.forEach(function(transceiver) {\n        ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n            'dtlsTransport'].forEach(function(method) {\n              if (transceiver[method]) {\n                promises.push(transceiver[method].getStats());\n              }\n            });\n      });\n      var cb = arguments.length > 1 && typeof arguments[1] === 'function' &&\n          arguments[1];\n      return new Promise(function(resolve) {\n        // shim getStats with maplike support\n        var results = new Map();\n        Promise.all(promises).then(function(res) {\n          res.forEach(function(result) {\n            Object.keys(result).forEach(function(id) {\n              results.set(id, result[id]);\n              results[id] = result[id];\n            });\n          });\n          if (cb) {\n            window.setTimeout(cb, 0, results);\n          }\n          resolve(results);\n        });\n      });\n    };\n  },\n\n  // Attach a media stream to an element.\n  attachMediaStream: function(element, stream) {\n    logging('DEPRECATED, attachMediaStream will soon be removed.');\n    element.srcObject = stream;\n  },\n\n  reattachMediaStream: function(to, from) {\n    logging('DEPRECATED, reattachMediaStream will soon be removed.');\n    to.srcObject = from.srcObject;\n  }\n};\n\n// Expose public methods.\nmodule.exports = {\n  shimPeerConnection: edgeShim.shimPeerConnection,\n  shimGetUserMedia: require('./getusermedia'),\n  attachMediaStream: edgeShim.attachMediaStream,\n  reattachMediaStream: edgeShim.reattachMediaStream\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/localmedia/~/webrtc-adapter/src/js/edge/edge_shim.js\n// module id = 451\n// module chunks = 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Severity: Minor
Found in app/assets/javascripts/metamaps.secret.bundle.js by fixme

FIXME found
Open

    eval("/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = __webpack_require__(452);\nvar browserDetails = __webpack_require__(460).browserDetails;\n\nvar edgeShim = {\n  shimPeerConnection: function() {\n    if (window.RTCIceGatherer) {\n      // ORTC defines an RTCIceCandidate object but no constructor.\n      // Not implemented in Edge.\n      if (!window.RTCIceCandidate) {\n        window.RTCIceCandidate = function(args) {\n          return args;\n        };\n      }\n      // ORTC does not have a session description object but\n      // other browsers (i.e. Chrome) that will support both PC and ORTC\n      // in the future might have this defined already.\n      if (!window.RTCSessionDescription) {\n        window.RTCSessionDescription = function(args) {\n          return args;\n        };\n      }\n      // this adds an additional event listener to MediaStrackTrack that signals\n      // when a tracks enabled property was changed.\n      var origMSTEnabled = Object.getOwnPropertyDescriptor(\n          MediaStreamTrack.prototype, 'enabled');\n      Object.defineProperty(MediaStreamTrack.prototype, 'enabled', {\n        set: function(value) {\n          origMSTEnabled.set.call(this, value);\n          var ev = new Event('enabled');\n          ev.enabled = value;\n          this.dispatchEvent(ev);\n        }\n      });\n    }\n\n    window.RTCPeerConnection = function(config) {\n      var self = this;\n\n      var _eventTarget = document.createDocumentFragment();\n      ['addEventListener', 'removeEventListener', 'dispatchEvent']\n          .forEach(function(method) {\n            self[method] = _eventTarget[method].bind(_eventTarget);\n          });\n\n      this.onicecandidate = null;\n      this.onaddstream = null;\n      this.ontrack = null;\n      this.onremovestream = null;\n      this.onsignalingstatechange = null;\n      this.oniceconnectionstatechange = null;\n      this.onnegotiationneeded = null;\n      this.ondatachannel = null;\n\n      this.localStreams = [];\n      this.remoteStreams = [];\n      this.getLocalStreams = function() {\n        return self.localStreams;\n      };\n      this.getRemoteStreams = function() {\n        return self.remoteStreams;\n      };\n\n      this.localDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.remoteDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.signalingState = 'stable';\n      this.iceConnectionState = 'new';\n      this.iceGatheringState = 'new';\n\n      this.iceOptions = {\n        gatherPolicy: 'all',\n        iceServers: []\n      };\n      if (config && config.iceTransportPolicy) {\n        switch (config.iceTransportPolicy) {\n          case 'all':\n          case 'relay':\n            this.iceOptions.gatherPolicy = config.iceTransportPolicy;\n            break;\n          case 'none':\n            // FIXME: remove once implementation and spec have added this.\n            throw new TypeError('iceTransportPolicy \"none\" not supported');\n          default:\n            // don't set iceTransportPolicy.\n            break;\n        }\n      }\n      this.usingBundle = config && config.bundlePolicy === 'max-bundle';\n\n      if (config && config.iceServers) {\n        // Edge does not like\n        // 1) stun:\n        // 2) turn: that does not have all of turn:host:port?transport=udp\n        // 3) turn: with ipv6 addresses\n        var iceServers = JSON.parse(JSON.stringify(config.iceServers));\n        this.iceOptions.iceServers = iceServers.filter(function(server) {\n          if (server && server.urls) {\n            var urls = server.urls;\n            if (typeof urls === 'string') {\n              urls = [urls];\n            }\n            urls = urls.filter(function(url) {\n              return (url.indexOf('turn:') === 0 &&\n                  url.indexOf('transport=udp') !== -1 &&\n                  url.indexOf('turn:[') === -1) ||\n                  (url.indexOf('stun:') === 0 &&\n                    browserDetails.version >= 14393);\n            })[0];\n            return !!urls;\n          }\n          return false;\n        });\n      }\n      this._config = config;\n\n      // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n      // everything that is needed to describe a SDP m-line.\n      this.transceivers = [];\n\n      // since the iceGatherer is currently created in createOffer but we\n      // must not emit candidates until after setLocalDescription we buffer\n      // them in this array.\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype._emitBufferedCandidates = function() {\n      var self = this;\n      var sections = SDPUtils.splitSections(self.localDescription.sdp);\n      // FIXME: need to apply ice candidates in a way which is async but\n      // in-order\n      this._localIceCandidatesBuffer.forEach(function(event) {\n        var end = !event.candidate || Object.keys(event.candidate).length === 0;\n        if (end) {\n          for (var j = 1; j < sections.length; j++) {\n            if (sections[j].indexOf('\\r\\na=end-of-candidates\\r\\n') === -1) {\n              sections[j] += 'a=end-of-candidates\\r\\n';\n            }\n          }\n        } else if (event.candidate.candidate.indexOf('typ endOfCandidates')\n            === -1) {\n          sections[event.candidate.sdpMLineIndex + 1] +=\n              'a=' + event.candidate.candidate + '\\r\\n';\n        }\n        self.localDescription.sdp = sections.join('');\n        self.dispatchEvent(event);\n        if (self.onicecandidate !== null) {\n          self.onicecandidate(event);\n        }\n        if (!event.candidate && self.iceGatheringState !== 'complete') {\n          var complete = self.transceivers.every(function(transceiver) {\n            return transceiver.iceGatherer &&\n                transceiver.iceGatherer.state === 'completed';\n          });\n          if (complete) {\n            self.iceGatheringState = 'complete';\n          }\n        }\n      });\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype.getConfiguration = function() {\n      return this._config;\n    };\n\n    window.RTCPeerConnection.prototype.addStream = function(stream) {\n      // Clone is necessary for local demos mostly, attaching directly\n      // to two different senders does not work (build 10547).\n      var clonedStream = stream.clone();\n      stream.getTracks().forEach(function(track, idx) {\n        var clonedTrack = clonedStream.getTracks()[idx];\n        track.addEventListener('enabled', function(event) {\n          clonedTrack.enabled = event.enabled;\n        });\n      });\n      this.localStreams.push(clonedStream);\n      this._maybeFireNegotiationNeeded();\n    };\n\n    window.RTCPeerConnection.prototype.removeStream = function(stream) {\n      var idx = this.localStreams.indexOf(stream);\n      if (idx > -1) {\n        this.localStreams.splice(idx, 1);\n        this._maybeFireNegotiationNeeded();\n      }\n    };\n\n    window.RTCPeerConnection.prototype.getSenders = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpSender;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpSender;\n      });\n    };\n\n    window.RTCPeerConnection.prototype.getReceivers = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpReceiver;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpReceiver;\n      });\n    };\n\n    // Determines the intersection of local and remote capabilities.\n    window.RTCPeerConnection.prototype._getCommonCapabilities =\n        function(localCapabilities, remoteCapabilities) {\n          var commonCapabilities = {\n            codecs: [],\n            headerExtensions: [],\n            fecMechanisms: []\n          };\n          localCapabilities.codecs.forEach(function(lCodec) {\n            for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n              var rCodec = remoteCapabilities.codecs[i];\n              if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n                  lCodec.clockRate === rCodec.clockRate) {\n                // number of channels is the highest common number of channels\n                rCodec.numChannels = Math.min(lCodec.numChannels,\n                    rCodec.numChannels);\n                // push rCodec so we reply with offerer payload type\n                commonCapabilities.codecs.push(rCodec);\n\n                // determine common feedback mechanisms\n                rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function(fb) {\n                  for (var j = 0; j < lCodec.rtcpFeedback.length; j++) {\n                    if (lCodec.rtcpFeedback[j].type === fb.type &&\n                        lCodec.rtcpFeedback[j].parameter === fb.parameter) {\n                      return true;\n                    }\n                  }\n                  return false;\n                });\n                // FIXME: also need to determine .parameters\n                //  see https://github.com/openpeer/ortc/issues/569\n                break;\n              }\n            }\n          });\n\n          localCapabilities.headerExtensions\n              .forEach(function(lHeaderExtension) {\n                for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n                     i++) {\n                  var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n                  if (lHeaderExtension.uri === rHeaderExtension.uri) {\n                    commonCapabilities.headerExtensions.push(rHeaderExtension);\n                    break;\n                  }\n                }\n              });\n\n          // FIXME: fecMechanisms\n          return commonCapabilities;\n        };\n\n    // Create ICE gatherer, ICE transport and DTLS transport.\n    window.RTCPeerConnection.prototype._createIceAndDtlsTransports =\n        function(mid, sdpMLineIndex) {\n          var self = this;\n          var iceGatherer = new RTCIceGatherer(self.iceOptions);\n          var iceTransport = new RTCIceTransport(iceGatherer);\n          iceGatherer.onlocalcandidate = function(evt) {\n            var event = new Event('icecandidate');\n            event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n            var cand = evt.candidate;\n            var end = !cand || Object.keys(cand).length === 0;\n            // Edge emits an empty object for RTCIceCandidateComplete‥\n            if (end) {\n              // polyfill since RTCIceGatherer.state is not implemented in\n              // Edge 10547 yet.\n              if (iceGatherer.state === undefined) {\n                iceGatherer.state = 'completed';\n              }\n\n              // Emit a candidate with type endOfCandidates to make the samples\n              // work. Edge requires addIceCandidate with this empty candidate\n              // to start checking. The real solution is to signal\n              // end-of-candidates to the other side when getting the null\n              // candidate but some apps (like the samples) don't do that.\n              event.candidate.candidate =\n                  'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates';\n            } else {\n              // RTCIceCandidate doesn't have a component, needs to be added\n              cand.component = iceTransport.component === 'RTCP' ? 2 : 1;\n              event.candidate.candidate = SDPUtils.writeCandidate(cand);\n            }\n\n            // update local description.\n            var sections = SDPUtils.splitSections(self.localDescription.sdp);\n            if (event.candidate.candidate.indexOf('typ endOfCandidates')\n                === -1) {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=' + event.candidate.candidate + '\\r\\n';\n            } else {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=end-of-candidates\\r\\n';\n            }\n            self.localDescription.sdp = sections.join('');\n\n            var complete = self.transceivers.every(function(transceiver) {\n              return transceiver.iceGatherer &&\n                  transceiver.iceGatherer.state === 'completed';\n            });\n\n            // Emit candidate if localDescription is set.\n            // Also emits null candidate when all gatherers are complete.\n            switch (self.iceGatheringState) {\n              case 'new':\n                self._localIceCandidatesBuffer.push(event);\n                if (end && complete) {\n                  self._localIceCandidatesBuffer.push(\n                      new Event('icecandidate'));\n                }\n                break;\n              case 'gathering':\n                self._emitBufferedCandidates();\n                self.dispatchEvent(event);\n                if (self.onicecandidate !== null) {\n                  self.onicecandidate(event);\n                }\n                if (complete) {\n                  self.dispatchEvent(new Event('icecandidate'));\n                  if (self.onicecandidate !== null) {\n                    self.onicecandidate(new Event('icecandidate'));\n                  }\n                  self.iceGatheringState = 'complete';\n                }\n                break;\n              case 'complete':\n                // should not happen... currently!\n                break;\n              default: // no-op.\n                break;\n            }\n          };\n          iceTransport.onicestatechange = function() {\n            self._updateConnectionState();\n          };\n\n          var dtlsTransport = new RTCDtlsTransport(iceTransport);\n          dtlsTransport.ondtlsstatechange = function() {\n            self._updateConnectionState();\n          };\n          dtlsTransport.onerror = function() {\n            // onerror does not set state to failed by itself.\n            dtlsTransport.state = 'failed';\n            self._updateConnectionState();\n          };\n\n          return {\n            iceGatherer: iceGatherer,\n            iceTransport: iceTransport,\n            dtlsTransport: dtlsTransport\n          };\n        };\n\n    // Start the RTP Sender and Receiver for a transceiver.\n    window.RTCPeerConnection.prototype._transceive = function(transceiver,\n        send, recv) {\n      var params = this._getCommonCapabilities(transceiver.localCapabilities,\n          transceiver.remoteCapabilities);\n      if (send && transceiver.rtpSender) {\n        params.encodings = transceiver.sendEncodingParameters;\n        params.rtcp = {\n          cname: SDPUtils.localCName\n        };\n        if (transceiver.recvEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpSender.send(params);\n      }\n      if (recv && transceiver.rtpReceiver) {\n        // remove RTX field in Edge 14942\n        if (transceiver.kind === 'video'\n            && transceiver.recvEncodingParameters) {\n          transceiver.recvEncodingParameters.forEach(function(p) {\n            delete p.rtx;\n          });\n        }\n        params.encodings = transceiver.recvEncodingParameters;\n        params.rtcp = {\n          cname: transceiver.cname\n        };\n        if (transceiver.sendEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpReceiver.receive(params);\n      }\n    };\n\n    window.RTCPeerConnection.prototype.setLocalDescription =\n        function(description) {\n          var self = this;\n          var sections;\n          var sessionpart;\n          if (description.type === 'offer') {\n            // FIXME: What was the purpose of this empty if statement?\n            // if (!this._pendingOffer) {\n            // } else {\n            if (this._pendingOffer) {\n              // VERY limited support for SDP munging. Limited to:\n              // * changing the order of codecs\n              sections = SDPUtils.splitSections(description.sdp);\n              sessionpart = sections.shift();\n              sections.forEach(function(mediaSection, sdpMLineIndex) {\n                var caps = SDPUtils.parseRtpParameters(mediaSection);\n                self._pendingOffer[sdpMLineIndex].localCapabilities = caps;\n              });\n              this.transceivers = this._pendingOffer;\n              delete this._pendingOffer;\n            }\n          } else if (description.type === 'answer') {\n            sections = SDPUtils.splitSections(self.remoteDescription.sdp);\n            sessionpart = sections.shift();\n            var isIceLite = SDPUtils.matchPrefix(sessionpart,\n                'a=ice-lite').length > 0;\n            sections.forEach(function(mediaSection, sdpMLineIndex) {\n              var transceiver = self.transceivers[sdpMLineIndex];\n              var iceGatherer = transceiver.iceGatherer;\n              var iceTransport = transceiver.iceTransport;\n              var dtlsTransport = transceiver.dtlsTransport;\n              var localCapabilities = transceiver.localCapabilities;\n              var remoteCapabilities = transceiver.remoteCapabilities;\n\n              var rejected = mediaSection.split('\\n', 1)[0]\n                  .split(' ', 2)[1] === '0';\n\n              if (!rejected && !transceiver.isDatachannel) {\n                var remoteIceParameters = SDPUtils.getIceParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                  .map(function(cand) {\n                    return SDPUtils.parseCandidate(cand);\n                  })\n                  .filter(function(cand) {\n                    return cand.component === '1';\n                  });\n                  // ice-lite only includes host candidates in the SDP so we can\n                  // use setRemoteCandidates (which implies an\n                  // RTCIceCandidateComplete)\n                  if (cands.length) {\n                    iceTransport.setRemoteCandidates(cands);\n                  }\n                }\n                var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  remoteDtlsParameters.role = 'server';\n                }\n\n                if (!self.usingBundle || sdpMLineIndex === 0) {\n                  iceTransport.start(iceGatherer, remoteIceParameters,\n                      isIceLite ? 'controlling' : 'controlled');\n                  dtlsTransport.start(remoteDtlsParameters);\n                }\n\n                // Calculate intersection of capabilities.\n                var params = self._getCommonCapabilities(localCapabilities,\n                    remoteCapabilities);\n\n                // Start the RTCRtpSender. The RTCRtpReceiver for this\n                // transceiver has already been started in setRemoteDescription.\n                self._transceive(transceiver,\n                    params.codecs.length > 0,\n                    false);\n              }\n            });\n          }\n\n          this.localDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-local-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n\n          // If a success callback was provided, emit ICE candidates after it\n          // has been executed. Otherwise, emit callback after the Promise is\n          // resolved.\n          var hasCallback = arguments.length > 1 &&\n            typeof arguments[1] === 'function';\n          if (hasCallback) {\n            var cb = arguments[1];\n            window.setTimeout(function() {\n              cb();\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              self._emitBufferedCandidates();\n            }, 0);\n          }\n          var p = Promise.resolve();\n          p.then(function() {\n            if (!hasCallback) {\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              // Usually candidates will be emitted earlier.\n              window.setTimeout(self._emitBufferedCandidates.bind(self), 500);\n            }\n          });\n          return p;\n        };\n\n    window.RTCPeerConnection.prototype.setRemoteDescription =\n        function(description) {\n          var self = this;\n          var stream = new MediaStream();\n          var receiverList = [];\n          var sections = SDPUtils.splitSections(description.sdp);\n          var sessionpart = sections.shift();\n          var isIceLite = SDPUtils.matchPrefix(sessionpart,\n              'a=ice-lite').length > 0;\n          this.usingBundle = SDPUtils.matchPrefix(sessionpart,\n              'a=group:BUNDLE ').length > 0;\n          sections.forEach(function(mediaSection, sdpMLineIndex) {\n            var lines = SDPUtils.splitLines(mediaSection);\n            var mline = lines[0].substr(2).split(' ');\n            var kind = mline[0];\n            var rejected = mline[1] === '0';\n            var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n\n            var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:');\n            if (mid.length) {\n              mid = mid[0].substr(6);\n            } else {\n              mid = SDPUtils.generateIdentifier();\n            }\n\n            // Reject datachannels which are not implemented yet.\n            if (kind === 'application' && mline[2] === 'DTLS/SCTP') {\n              self.transceivers[sdpMLineIndex] = {\n                mid: mid,\n                isDatachannel: true\n              };\n              return;\n            }\n\n            var transceiver;\n            var iceGatherer;\n            var iceTransport;\n            var dtlsTransport;\n            var rtpSender;\n            var rtpReceiver;\n            var sendEncodingParameters;\n            var recvEncodingParameters;\n            var localCapabilities;\n\n            var track;\n            // FIXME: ensure the mediaSection has rtcp-mux set.\n            var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n            var remoteIceParameters;\n            var remoteDtlsParameters;\n            if (!rejected) {\n              remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters.role = 'client';\n            }\n            recvEncodingParameters =\n                SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n            var cname;\n            // Gets the first SSRC. Note that with RTX there might be multiple\n            // SSRCs.\n            var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n                .map(function(line) {\n                  return SDPUtils.parseSsrcMedia(line);\n                })\n                .filter(function(obj) {\n                  return obj.attribute === 'cname';\n                })[0];\n            if (remoteSsrc) {\n              cname = remoteSsrc.value;\n            }\n\n            var isComplete = SDPUtils.matchPrefix(mediaSection,\n                'a=end-of-candidates', sessionpart).length > 0;\n            var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                .map(function(cand) {\n                  return SDPUtils.parseCandidate(cand);\n                })\n                .filter(function(cand) {\n                  return cand.component === '1';\n                });\n            if (description.type === 'offer' && !rejected) {\n              var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n                iceGatherer: self.transceivers[0].iceGatherer,\n                iceTransport: self.transceivers[0].iceTransport,\n                dtlsTransport: self.transceivers[0].dtlsTransport\n              } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n              if (isComplete) {\n                transports.iceTransport.setRemoteCandidates(cands);\n              }\n\n              localCapabilities = RTCRtpReceiver.getCapabilities(kind);\n\n              // filter RTX until additional stuff needed for RTX is implemented\n              // in adapter.js\n              localCapabilities.codecs = localCapabilities.codecs.filter(\n                  function(codec) {\n                    return codec.name !== 'rtx';\n                  });\n\n              sendEncodingParameters = [{\n                ssrc: (2 * sdpMLineIndex + 2) * 1001\n              }];\n\n              rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n\n              track = rtpReceiver.track;\n              receiverList.push([track, rtpReceiver]);\n              // FIXME: not correct when there are multiple streams but that is\n              // not currently supported in this shim.\n              stream.addTrack(track);\n\n              // FIXME: look at direction.\n              if (self.localStreams.length > 0 &&\n                  self.localStreams[0].getTracks().length >= sdpMLineIndex) {\n                var localTrack;\n                if (kind === 'audio') {\n                  localTrack = self.localStreams[0].getAudioTracks()[0];\n                } else if (kind === 'video') {\n                  localTrack = self.localStreams[0].getVideoTracks()[0];\n                }\n                if (localTrack) {\n                  rtpSender = new RTCRtpSender(localTrack,\n                      transports.dtlsTransport);\n                }\n              }\n\n              self.transceivers[sdpMLineIndex] = {\n                iceGatherer: transports.iceGatherer,\n                iceTransport: transports.iceTransport,\n                dtlsTransport: transports.dtlsTransport,\n                localCapabilities: localCapabilities,\n                remoteCapabilities: remoteCapabilities,\n                rtpSender: rtpSender,\n                rtpReceiver: rtpReceiver,\n                kind: kind,\n                mid: mid,\n                cname: cname,\n                sendEncodingParameters: sendEncodingParameters,\n                recvEncodingParameters: recvEncodingParameters\n              };\n              // Start the RTCRtpReceiver now. The RTPSender is started in\n              // setLocalDescription.\n              self._transceive(self.transceivers[sdpMLineIndex],\n                  false,\n                  direction === 'sendrecv' || direction === 'sendonly');\n            } else if (description.type === 'answer' && !rejected) {\n              transceiver = self.transceivers[sdpMLineIndex];\n              iceGatherer = transceiver.iceGatherer;\n              iceTransport = transceiver.iceTransport;\n              dtlsTransport = transceiver.dtlsTransport;\n              rtpSender = transceiver.rtpSender;\n              rtpReceiver = transceiver.rtpReceiver;\n              sendEncodingParameters = transceiver.sendEncodingParameters;\n              localCapabilities = transceiver.localCapabilities;\n\n              self.transceivers[sdpMLineIndex].recvEncodingParameters =\n                  recvEncodingParameters;\n              self.transceivers[sdpMLineIndex].remoteCapabilities =\n                  remoteCapabilities;\n              self.transceivers[sdpMLineIndex].cname = cname;\n\n              if ((isIceLite || isComplete) && cands.length) {\n                iceTransport.setRemoteCandidates(cands);\n              }\n              if (!self.usingBundle || sdpMLineIndex === 0) {\n                iceTransport.start(iceGatherer, remoteIceParameters,\n                    'controlling');\n                dtlsTransport.start(remoteDtlsParameters);\n              }\n\n              self._transceive(transceiver,\n                  direction === 'sendrecv' || direction === 'recvonly',\n                  direction === 'sendrecv' || direction === 'sendonly');\n\n              if (rtpReceiver &&\n                  (direction === 'sendrecv' || direction === 'sendonly')) {\n                track = rtpReceiver.track;\n                receiverList.push([track, rtpReceiver]);\n                stream.addTrack(track);\n              } else {\n                // FIXME: actually the receiver should be created later.\n                delete transceiver.rtpReceiver;\n              }\n            }\n          });\n\n          this.remoteDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-remote-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n          if (stream.getTracks().length) {\n            self.remoteStreams.push(stream);\n            window.setTimeout(function() {\n              var event = new Event('addstream');\n              event.stream = stream;\n              self.dispatchEvent(event);\n              if (self.onaddstream !== null) {\n                window.setTimeout(function() {\n                  self.onaddstream(event);\n                }, 0);\n              }\n\n              receiverList.forEach(function(item) {\n                var track = item[0];\n                var receiver = item[1];\n                var trackEvent = new Event('track');\n                trackEvent.track = track;\n                trackEvent.receiver = receiver;\n                trackEvent.streams = [stream];\n                self.dispatchEvent(event);\n                if (self.ontrack !== null) {\n                  window.setTimeout(function() {\n                    self.ontrack(trackEvent);\n                  }, 0);\n                }\n              });\n            }, 0);\n          }\n          if (arguments.length > 1 && typeof arguments[1] === 'function') {\n            window.setTimeout(arguments[1], 0);\n          }\n          return Promise.resolve();\n        };\n\n    window.RTCPeerConnection.prototype.close = function() {\n      this.transceivers.forEach(function(transceiver) {\n        /* not yet\n        if (transceiver.iceGatherer) {\n          transceiver.iceGatherer.close();\n        }\n        */\n        if (transceiver.iceTransport) {\n          transceiver.iceTransport.stop();\n        }\n        if (transceiver.dtlsTransport) {\n          transceiver.dtlsTransport.stop();\n        }\n        if (transceiver.rtpSender) {\n          transceiver.rtpSender.stop();\n        }\n        if (transceiver.rtpReceiver) {\n          transceiver.rtpReceiver.stop();\n        }\n      });\n      // FIXME: clean up tracks, local streams, remote streams, etc\n      this._updateSignalingState('closed');\n    };\n\n    // Update the signaling state.\n    window.RTCPeerConnection.prototype._updateSignalingState =\n        function(newState) {\n          this.signalingState = newState;\n          var event = new Event('signalingstatechange');\n          this.dispatchEvent(event);\n          if (this.onsignalingstatechange !== null) {\n            this.onsignalingstatechange(event);\n          }\n        };\n\n    // Determine whether to fire the negotiationneeded event.\n    window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded =\n        function() {\n          // Fire away (for now).\n          var event = new Event('negotiationneeded');\n          this.dispatchEvent(event);\n          if (this.onnegotiationneeded !== null) {\n            this.onnegotiationneeded(event);\n          }\n        };\n\n    // Update the connection state.\n    window.RTCPeerConnection.prototype._updateConnectionState = function() {\n      var self = this;\n      var newState;\n      var states = {\n        'new': 0,\n        closed: 0,\n        connecting: 0,\n        checking: 0,\n        connected: 0,\n        completed: 0,\n        failed: 0\n      };\n      this.transceivers.forEach(function(transceiver) {\n        states[transceiver.iceTransport.state]++;\n        states[transceiver.dtlsTransport.state]++;\n      });\n      // ICETransport.completed and connected are the same for this purpose.\n      states.connected += states.completed;\n\n      newState = 'new';\n      if (states.failed > 0) {\n        newState = 'failed';\n      } else if (states.connecting > 0 || states.checking > 0) {\n        newState = 'connecting';\n      } else if (states.disconnected > 0) {\n        newState = 'disconnected';\n      } else if (states.new > 0) {\n        newState = 'new';\n      } else if (states.connected > 0 || states.completed > 0) {\n        newState = 'connected';\n      }\n\n      if (newState !== self.iceConnectionState) {\n        self.iceConnectionState = newState;\n        var event = new Event('iceconnectionstatechange');\n        this.dispatchEvent(event);\n        if (this.oniceconnectionstatechange !== null) {\n          this.oniceconnectionstatechange(event);\n        }\n      }\n    };\n\n    window.RTCPeerConnection.prototype.createOffer = function() {\n      var self = this;\n      if (this._pendingOffer) {\n        throw new Error('createOffer called while there is a pending offer.');\n      }\n      var offerOptions;\n      if (arguments.length === 1 && typeof arguments[0] !== 'function') {\n        offerOptions = arguments[0];\n      } else if (arguments.length === 3) {\n        offerOptions = arguments[2];\n      }\n\n      var tracks = [];\n      var numAudioTracks = 0;\n      var numVideoTracks = 0;\n      // Default to sendrecv.\n      if (this.localStreams.length) {\n        numAudioTracks = this.localStreams[0].getAudioTracks().length;\n        numVideoTracks = this.localStreams[0].getVideoTracks().length;\n      }\n      // Determine number of audio and video tracks we need to send/recv.\n      if (offerOptions) {\n        // Reject Chrome legacy constraints.\n        if (offerOptions.mandatory || offerOptions.optional) {\n          throw new TypeError(\n              'Legacy mandatory/optional constraints not supported.');\n        }\n        if (offerOptions.offerToReceiveAudio !== undefined) {\n          numAudioTracks = offerOptions.offerToReceiveAudio;\n        }\n        if (offerOptions.offerToReceiveVideo !== undefined) {\n          numVideoTracks = offerOptions.offerToReceiveVideo;\n        }\n      }\n      if (this.localStreams.length) {\n        // Push local streams.\n        this.localStreams[0].getTracks().forEach(function(track) {\n          tracks.push({\n            kind: track.kind,\n            track: track,\n            wantReceive: track.kind === 'audio' ?\n                numAudioTracks > 0 : numVideoTracks > 0\n          });\n          if (track.kind === 'audio') {\n            numAudioTracks--;\n          } else if (track.kind === 'video') {\n            numVideoTracks--;\n          }\n        });\n      }\n      // Create M-lines for recvonly streams.\n      while (numAudioTracks > 0 || numVideoTracks > 0) {\n        if (numAudioTracks > 0) {\n          tracks.push({\n            kind: 'audio',\n            wantReceive: true\n          });\n          numAudioTracks--;\n        }\n        if (numVideoTracks > 0) {\n          tracks.push({\n            kind: 'video',\n            wantReceive: true\n          });\n          numVideoTracks--;\n        }\n      }\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      var transceivers = [];\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        // For each track, create an ice gatherer, ice transport,\n        // dtls transport, potentially rtpsender and rtpreceiver.\n        var track = mline.track;\n        var kind = mline.kind;\n        var mid = SDPUtils.generateIdentifier();\n\n        var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n          iceGatherer: transceivers[0].iceGatherer,\n          iceTransport: transceivers[0].iceTransport,\n          dtlsTransport: transceivers[0].dtlsTransport\n        } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n        var localCapabilities = RTCRtpSender.getCapabilities(kind);\n        // filter RTX until additional stuff needed for RTX is implemented\n        // in adapter.js\n        localCapabilities.codecs = localCapabilities.codecs.filter(\n            function(codec) {\n              return codec.name !== 'rtx';\n            });\n        localCapabilities.codecs.forEach(function(codec) {\n          // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552\n          // by adding level-asymmetry-allowed=1\n          if (codec.name === 'H264' &&\n              codec.parameters['level-asymmetry-allowed'] === undefined) {\n            codec.parameters['level-asymmetry-allowed'] = '1';\n          }\n        });\n\n        var rtpSender;\n        var rtpReceiver;\n\n        // generate an ssrc now, to be used later in rtpSender.send\n        var sendEncodingParameters = [{\n          ssrc: (2 * sdpMLineIndex + 1) * 1001\n        }];\n        if (track) {\n          rtpSender = new RTCRtpSender(track, transports.dtlsTransport);\n        }\n\n        if (mline.wantReceive) {\n          rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n        }\n\n        transceivers[sdpMLineIndex] = {\n          iceGatherer: transports.iceGatherer,\n          iceTransport: transports.iceTransport,\n          dtlsTransport: transports.dtlsTransport,\n          localCapabilities: localCapabilities,\n          remoteCapabilities: null,\n          rtpSender: rtpSender,\n          rtpReceiver: rtpReceiver,\n          kind: kind,\n          mid: mid,\n          sendEncodingParameters: sendEncodingParameters,\n          recvEncodingParameters: null\n        };\n      });\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        var transceiver = transceivers[sdpMLineIndex];\n        sdp += SDPUtils.writeMediaSection(transceiver,\n            transceiver.localCapabilities, 'offer', self.localStreams[0]);\n      });\n\n      this._pendingOffer = transceivers;\n      var desc = new RTCSessionDescription({\n        type: 'offer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.createAnswer = function() {\n      var self = this;\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      this.transceivers.forEach(function(transceiver) {\n        if (transceiver.isDatachannel) {\n          sdp += 'm=application 0 DTLS/SCTP 5000\\r\\n' +\n              'c=IN IP4 0.0.0.0\\r\\n' +\n              'a=mid:' + transceiver.mid + '\\r\\n';\n          return;\n        }\n        // Calculate intersection of capabilities.\n        var commonCapabilities = self._getCommonCapabilities(\n            transceiver.localCapabilities,\n            transceiver.remoteCapabilities);\n\n        sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities,\n            'answer', self.localStreams[0]);\n      });\n\n      var desc = new RTCSessionDescription({\n        type: 'answer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n      if (!candidate) {\n        this.transceivers.forEach(function(transceiver) {\n          transceiver.iceTransport.addRemoteCandidate({});\n        });\n      } else {\n        var mLineIndex = candidate.sdpMLineIndex;\n        if (candidate.sdpMid) {\n          for (var i = 0; i < this.transceivers.length; i++) {\n            if (this.transceivers[i].mid === candidate.sdpMid) {\n              mLineIndex = i;\n              break;\n            }\n          }\n        }\n        var transceiver = this.transceivers[mLineIndex];\n        if (transceiver) {\n          var cand = Object.keys(candidate.candidate).length > 0 ?\n              SDPUtils.parseCandidate(candidate.candidate) : {};\n          // Ignore Chrome's invalid candidates since Edge does not like them.\n          if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) {\n            return;\n          }\n          // Ignore RTCP candidates, we assume RTCP-MUX.\n          if (cand.component !== '1') {\n            return;\n          }\n          // A dirty hack to make samples work.\n          if (cand.type === 'endOfCandidates') {\n            cand = {};\n          }\n          transceiver.iceTransport.addRemoteCandidate(cand);\n\n          // update the remoteDescription.\n          var sections = SDPUtils.splitSections(this.remoteDescription.sdp);\n          sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim()\n              : 'a=end-of-candidates') + '\\r\\n';\n          this.remoteDescription.sdp = sections.join('');\n        }\n      }\n      if (arguments.length > 1 && typeof arguments[1] === 'function') {\n        window.setTimeout(arguments[1], 0);\n      }\n      return Promise.resolve();\n    };\n\n    window.RTCPeerConnection.prototype.getStats = function() {\n      var promises = [];\n      this.transceivers.forEach(function(transceiver) {\n        ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n            'dtlsTransport'].forEach(function(method) {\n              if (transceiver[method]) {\n                promises.push(transceiver[method].getStats());\n              }\n            });\n      });\n      var cb = arguments.length > 1 && typeof arguments[1] === 'function' &&\n          arguments[1];\n      return new Promise(function(resolve) {\n        // shim getStats with maplike support\n        var results = new Map();\n        Promise.all(promises).then(function(res) {\n          res.forEach(function(result) {\n            Object.keys(result).forEach(function(id) {\n              results.set(id, result[id]);\n              results[id] = result[id];\n            });\n          });\n          if (cb) {\n            window.setTimeout(cb, 0, results);\n          }\n          resolve(results);\n        });\n      });\n    };\n  }\n};\n\n// Expose public methods.\nmodule.exports = {\n  shimPeerConnection: edgeShim.shimPeerConnection,\n  shimGetUserMedia: __webpack_require__(464)\n};\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"463.js","sources":["/home/ubuntu/workspace/node_modules/webrtc-adapter/src/js/edge/edge_shim.js"],"sourcesContent":["/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = require('sdp');\nvar browserDetails = require('../utils').browserDetails;\n\nvar edgeShim = {\n  shimPeerConnection: function() {\n    if (window.RTCIceGatherer) {\n      // ORTC defines an RTCIceCandidate object but no constructor.\n      // Not implemented in Edge.\n      if (!window.RTCIceCandidate) {\n        window.RTCIceCandidate = function(args) {\n          return args;\n        };\n      }\n      // ORTC does not have a session description object but\n      // other browsers (i.e. Chrome) that will support both PC and ORTC\n      // in the future might have this defined already.\n      if (!window.RTCSessionDescription) {\n        window.RTCSessionDescription = function(args) {\n          return args;\n        };\n      }\n      // this adds an additional event listener to MediaStrackTrack that signals\n      // when a tracks enabled property was changed.\n      var origMSTEnabled = Object.getOwnPropertyDescriptor(\n          MediaStreamTrack.prototype, 'enabled');\n      Object.defineProperty(MediaStreamTrack.prototype, 'enabled', {\n        set: function(value) {\n          origMSTEnabled.set.call(this, value);\n          var ev = new Event('enabled');\n          ev.enabled = value;\n          this.dispatchEvent(ev);\n        }\n      });\n    }\n\n    window.RTCPeerConnection = function(config) {\n      var self = this;\n\n      var _eventTarget = document.createDocumentFragment();\n      ['addEventListener', 'removeEventListener', 'dispatchEvent']\n          .forEach(function(method) {\n            self[method] = _eventTarget[method].bind(_eventTarget);\n          });\n\n      this.onicecandidate = null;\n      this.onaddstream = null;\n      this.ontrack = null;\n      this.onremovestream = null;\n      this.onsignalingstatechange = null;\n      this.oniceconnectionstatechange = null;\n      this.onnegotiationneeded = null;\n      this.ondatachannel = null;\n\n      this.localStreams = [];\n      this.remoteStreams = [];\n      this.getLocalStreams = function() {\n        return self.localStreams;\n      };\n      this.getRemoteStreams = function() {\n        return self.remoteStreams;\n      };\n\n      this.localDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.remoteDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.signalingState = 'stable';\n      this.iceConnectionState = 'new';\n      this.iceGatheringState = 'new';\n\n      this.iceOptions = {\n        gatherPolicy: 'all',\n        iceServers: []\n      };\n      if (config && config.iceTransportPolicy) {\n        switch (config.iceTransportPolicy) {\n          case 'all':\n          case 'relay':\n            this.iceOptions.gatherPolicy = config.iceTransportPolicy;\n            break;\n          case 'none':\n            // FIXME: remove once implementation and spec have added this.\n            throw new TypeError('iceTransportPolicy \"none\" not supported');\n          default:\n            // don't set iceTransportPolicy.\n            break;\n        }\n      }\n      this.usingBundle = config && config.bundlePolicy === 'max-bundle';\n\n      if (config && config.iceServers) {\n        // Edge does not like\n        // 1) stun:\n        // 2) turn: that does not have all of turn:host:port?transport=udp\n        // 3) turn: with ipv6 addresses\n        var iceServers = JSON.parse(JSON.stringify(config.iceServers));\n        this.iceOptions.iceServers = iceServers.filter(function(server) {\n          if (server && server.urls) {\n            var urls = server.urls;\n            if (typeof urls === 'string') {\n              urls = [urls];\n            }\n            urls = urls.filter(function(url) {\n              return (url.indexOf('turn:') === 0 &&\n                  url.indexOf('transport=udp') !== -1 &&\n                  url.indexOf('turn:[') === -1) ||\n                  (url.indexOf('stun:') === 0 &&\n                    browserDetails.version >= 14393);\n            })[0];\n            return !!urls;\n          }\n          return false;\n        });\n      }\n      this._config = config;\n\n      // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n      // everything that is needed to describe a SDP m-line.\n      this.transceivers = [];\n\n      // since the iceGatherer is currently created in createOffer but we\n      // must not emit candidates until after setLocalDescription we buffer\n      // them in this array.\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype._emitBufferedCandidates = function() {\n      var self = this;\n      var sections = SDPUtils.splitSections(self.localDescription.sdp);\n      // FIXME: need to apply ice candidates in a way which is async but\n      // in-order\n      this._localIceCandidatesBuffer.forEach(function(event) {\n        var end = !event.candidate || Object.keys(event.candidate).length === 0;\n        if (end) {\n          for (var j = 1; j < sections.length; j++) {\n            if (sections[j].indexOf('\\r\\na=end-of-candidates\\r\\n') === -1) {\n              sections[j] += 'a=end-of-candidates\\r\\n';\n            }\n          }\n        } else if (event.candidate.candidate.indexOf('typ endOfCandidates')\n            === -1) {\n          sections[event.candidate.sdpMLineIndex + 1] +=\n              'a=' + event.candidate.candidate + '\\r\\n';\n        }\n        self.localDescription.sdp = sections.join('');\n        self.dispatchEvent(event);\n        if (self.onicecandidate !== null) {\n          self.onicecandidate(event);\n        }\n        if (!event.candidate && self.iceGatheringState !== 'complete') {\n          var complete = self.transceivers.every(function(transceiver) {\n            return transceiver.iceGatherer &&\n                transceiver.iceGatherer.state === 'completed';\n          });\n          if (complete) {\n            self.iceGatheringState = 'complete';\n          }\n        }\n      });\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype.getConfiguration = function() {\n      return this._config;\n    };\n\n    window.RTCPeerConnection.prototype.addStream = function(stream) {\n      // Clone is necessary for local demos mostly, attaching directly\n      // to two different senders does not work (build 10547).\n      var clonedStream = stream.clone();\n      stream.getTracks().forEach(function(track, idx) {\n        var clonedTrack = clonedStream.getTracks()[idx];\n        track.addEventListener('enabled', function(event) {\n          clonedTrack.enabled = event.enabled;\n        });\n      });\n      this.localStreams.push(clonedStream);\n      this._maybeFireNegotiationNeeded();\n    };\n\n    window.RTCPeerConnection.prototype.removeStream = function(stream) {\n      var idx = this.localStreams.indexOf(stream);\n      if (idx > -1) {\n        this.localStreams.splice(idx, 1);\n        this._maybeFireNegotiationNeeded();\n      }\n    };\n\n    window.RTCPeerConnection.prototype.getSenders = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpSender;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpSender;\n      });\n    };\n\n    window.RTCPeerConnection.prototype.getReceivers = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpReceiver;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpReceiver;\n      });\n    };\n\n    // Determines the intersection of local and remote capabilities.\n    window.RTCPeerConnection.prototype._getCommonCapabilities =\n        function(localCapabilities, remoteCapabilities) {\n          var commonCapabilities = {\n            codecs: [],\n            headerExtensions: [],\n            fecMechanisms: []\n          };\n          localCapabilities.codecs.forEach(function(lCodec) {\n            for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n              var rCodec = remoteCapabilities.codecs[i];\n              if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n                  lCodec.clockRate === rCodec.clockRate) {\n                // number of channels is the highest common number of channels\n                rCodec.numChannels = Math.min(lCodec.numChannels,\n                    rCodec.numChannels);\n                // push rCodec so we reply with offerer payload type\n                commonCapabilities.codecs.push(rCodec);\n\n                // determine common feedback mechanisms\n                rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function(fb) {\n                  for (var j = 0; j < lCodec.rtcpFeedback.length; j++) {\n                    if (lCodec.rtcpFeedback[j].type === fb.type &&\n                        lCodec.rtcpFeedback[j].parameter === fb.parameter) {\n                      return true;\n                    }\n                  }\n                  return false;\n                });\n                // FIXME: also need to determine .parameters\n                //  see https://github.com/openpeer/ortc/issues/569\n                break;\n              }\n            }\n          });\n\n          localCapabilities.headerExtensions\n              .forEach(function(lHeaderExtension) {\n                for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n                     i++) {\n                  var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n                  if (lHeaderExtension.uri === rHeaderExtension.uri) {\n                    commonCapabilities.headerExtensions.push(rHeaderExtension);\n                    break;\n                  }\n                }\n              });\n\n          // FIXME: fecMechanisms\n          return commonCapabilities;\n        };\n\n    // Create ICE gatherer, ICE transport and DTLS transport.\n    window.RTCPeerConnection.prototype._createIceAndDtlsTransports =\n        function(mid, sdpMLineIndex) {\n          var self = this;\n          var iceGatherer = new RTCIceGatherer(self.iceOptions);\n          var iceTransport = new RTCIceTransport(iceGatherer);\n          iceGatherer.onlocalcandidate = function(evt) {\n            var event = new Event('icecandidate');\n            event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n            var cand = evt.candidate;\n            var end = !cand || Object.keys(cand).length === 0;\n            // Edge emits an empty object for RTCIceCandidateComplete‥\n            if (end) {\n              // polyfill since RTCIceGatherer.state is not implemented in\n              // Edge 10547 yet.\n              if (iceGatherer.state === undefined) {\n                iceGatherer.state = 'completed';\n              }\n\n              // Emit a candidate with type endOfCandidates to make the samples\n              // work. Edge requires addIceCandidate with this empty candidate\n              // to start checking. The real solution is to signal\n              // end-of-candidates to the other side when getting the null\n              // candidate but some apps (like the samples) don't do that.\n              event.candidate.candidate =\n                  'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates';\n            } else {\n              // RTCIceCandidate doesn't have a component, needs to be added\n              cand.component = iceTransport.component === 'RTCP' ? 2 : 1;\n              event.candidate.candidate = SDPUtils.writeCandidate(cand);\n            }\n\n            // update local description.\n            var sections = SDPUtils.splitSections(self.localDescription.sdp);\n            if (event.candidate.candidate.indexOf('typ endOfCandidates')\n                === -1) {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=' + event.candidate.candidate + '\\r\\n';\n            } else {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=end-of-candidates\\r\\n';\n            }\n            self.localDescription.sdp = sections.join('');\n\n            var complete = self.transceivers.every(function(transceiver) {\n              return transceiver.iceGatherer &&\n                  transceiver.iceGatherer.state === 'completed';\n            });\n\n            // Emit candidate if localDescription is set.\n            // Also emits null candidate when all gatherers are complete.\n            switch (self.iceGatheringState) {\n              case 'new':\n                self._localIceCandidatesBuffer.push(event);\n                if (end && complete) {\n                  self._localIceCandidatesBuffer.push(\n                      new Event('icecandidate'));\n                }\n                break;\n              case 'gathering':\n                self._emitBufferedCandidates();\n                self.dispatchEvent(event);\n                if (self.onicecandidate !== null) {\n                  self.onicecandidate(event);\n                }\n                if (complete) {\n                  self.dispatchEvent(new Event('icecandidate'));\n                  if (self.onicecandidate !== null) {\n                    self.onicecandidate(new Event('icecandidate'));\n                  }\n                  self.iceGatheringState = 'complete';\n                }\n                break;\n              case 'complete':\n                // should not happen... currently!\n                break;\n              default: // no-op.\n                break;\n            }\n          };\n          iceTransport.onicestatechange = function() {\n            self._updateConnectionState();\n          };\n\n          var dtlsTransport = new RTCDtlsTransport(iceTransport);\n          dtlsTransport.ondtlsstatechange = function() {\n            self._updateConnectionState();\n          };\n          dtlsTransport.onerror = function() {\n            // onerror does not set state to failed by itself.\n            dtlsTransport.state = 'failed';\n            self._updateConnectionState();\n          };\n\n          return {\n            iceGatherer: iceGatherer,\n            iceTransport: iceTransport,\n            dtlsTransport: dtlsTransport\n          };\n        };\n\n    // Start the RTP Sender and Receiver for a transceiver.\n    window.RTCPeerConnection.prototype._transceive = function(transceiver,\n        send, recv) {\n      var params = this._getCommonCapabilities(transceiver.localCapabilities,\n          transceiver.remoteCapabilities);\n      if (send && transceiver.rtpSender) {\n        params.encodings = transceiver.sendEncodingParameters;\n        params.rtcp = {\n          cname: SDPUtils.localCName\n        };\n        if (transceiver.recvEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpSender.send(params);\n      }\n      if (recv && transceiver.rtpReceiver) {\n        // remove RTX field in Edge 14942\n        if (transceiver.kind === 'video'\n            && transceiver.recvEncodingParameters) {\n          transceiver.recvEncodingParameters.forEach(function(p) {\n            delete p.rtx;\n          });\n        }\n        params.encodings = transceiver.recvEncodingParameters;\n        params.rtcp = {\n          cname: transceiver.cname\n        };\n        if (transceiver.sendEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpReceiver.receive(params);\n      }\n    };\n\n    window.RTCPeerConnection.prototype.setLocalDescription =\n        function(description) {\n          var self = this;\n          var sections;\n          var sessionpart;\n          if (description.type === 'offer') {\n            // FIXME: What was the purpose of this empty if statement?\n            // if (!this._pendingOffer) {\n            // } else {\n            if (this._pendingOffer) {\n              // VERY limited support for SDP munging. Limited to:\n              // * changing the order of codecs\n              sections = SDPUtils.splitSections(description.sdp);\n              sessionpart = sections.shift();\n              sections.forEach(function(mediaSection, sdpMLineIndex) {\n                var caps = SDPUtils.parseRtpParameters(mediaSection);\n                self._pendingOffer[sdpMLineIndex].localCapabilities = caps;\n              });\n              this.transceivers = this._pendingOffer;\n              delete this._pendingOffer;\n            }\n          } else if (description.type === 'answer') {\n            sections = SDPUtils.splitSections(self.remoteDescription.sdp);\n            sessionpart = sections.shift();\n            var isIceLite = SDPUtils.matchPrefix(sessionpart,\n                'a=ice-lite').length > 0;\n            sections.forEach(function(mediaSection, sdpMLineIndex) {\n              var transceiver = self.transceivers[sdpMLineIndex];\n              var iceGatherer = transceiver.iceGatherer;\n              var iceTransport = transceiver.iceTransport;\n              var dtlsTransport = transceiver.dtlsTransport;\n              var localCapabilities = transceiver.localCapabilities;\n              var remoteCapabilities = transceiver.remoteCapabilities;\n\n              var rejected = mediaSection.split('\\n', 1)[0]\n                  .split(' ', 2)[1] === '0';\n\n              if (!rejected && !transceiver.isDatachannel) {\n                var remoteIceParameters = SDPUtils.getIceParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                  .map(function(cand) {\n                    return SDPUtils.parseCandidate(cand);\n                  })\n                  .filter(function(cand) {\n                    return cand.component === '1';\n                  });\n                  // ice-lite only includes host candidates in the SDP so we can\n                  // use setRemoteCandidates (which implies an\n                  // RTCIceCandidateComplete)\n                  if (cands.length) {\n                    iceTransport.setRemoteCandidates(cands);\n                  }\n                }\n                var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  remoteDtlsParameters.role = 'server';\n                }\n\n                if (!self.usingBundle || sdpMLineIndex === 0) {\n                  iceTransport.start(iceGatherer, remoteIceParameters,\n                      isIceLite ? 'controlling' : 'controlled');\n                  dtlsTransport.start(remoteDtlsParameters);\n                }\n\n                // Calculate intersection of capabilities.\n                var params = self._getCommonCapabilities(localCapabilities,\n                    remoteCapabilities);\n\n                // Start the RTCRtpSender. The RTCRtpReceiver for this\n                // transceiver has already been started in setRemoteDescription.\n                self._transceive(transceiver,\n                    params.codecs.length > 0,\n                    false);\n              }\n            });\n          }\n\n          this.localDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-local-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n\n          // If a success callback was provided, emit ICE candidates after it\n          // has been executed. Otherwise, emit callback after the Promise is\n          // resolved.\n          var hasCallback = arguments.length > 1 &&\n            typeof arguments[1] === 'function';\n          if (hasCallback) {\n            var cb = arguments[1];\n            window.setTimeout(function() {\n              cb();\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              self._emitBufferedCandidates();\n            }, 0);\n          }\n          var p = Promise.resolve();\n          p.then(function() {\n            if (!hasCallback) {\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              // Usually candidates will be emitted earlier.\n              window.setTimeout(self._emitBufferedCandidates.bind(self), 500);\n            }\n          });\n          return p;\n        };\n\n    window.RTCPeerConnection.prototype.setRemoteDescription =\n        function(description) {\n          var self = this;\n          var stream = new MediaStream();\n          var receiverList = [];\n          var sections = SDPUtils.splitSections(description.sdp);\n          var sessionpart = sections.shift();\n          var isIceLite = SDPUtils.matchPrefix(sessionpart,\n              'a=ice-lite').length > 0;\n          this.usingBundle = SDPUtils.matchPrefix(sessionpart,\n              'a=group:BUNDLE ').length > 0;\n          sections.forEach(function(mediaSection, sdpMLineIndex) {\n            var lines = SDPUtils.splitLines(mediaSection);\n            var mline = lines[0].substr(2).split(' ');\n            var kind = mline[0];\n            var rejected = mline[1] === '0';\n            var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n\n            var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:');\n            if (mid.length) {\n              mid = mid[0].substr(6);\n            } else {\n              mid = SDPUtils.generateIdentifier();\n            }\n\n            // Reject datachannels which are not implemented yet.\n            if (kind === 'application' && mline[2] === 'DTLS/SCTP') {\n              self.transceivers[sdpMLineIndex] = {\n                mid: mid,\n                isDatachannel: true\n              };\n              return;\n            }\n\n            var transceiver;\n            var iceGatherer;\n            var iceTransport;\n            var dtlsTransport;\n            var rtpSender;\n            var rtpReceiver;\n            var sendEncodingParameters;\n            var recvEncodingParameters;\n            var localCapabilities;\n\n            var track;\n            // FIXME: ensure the mediaSection has rtcp-mux set.\n            var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n            var remoteIceParameters;\n            var remoteDtlsParameters;\n            if (!rejected) {\n              remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters.role = 'client';\n            }\n            recvEncodingParameters =\n                SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n            var cname;\n            // Gets the first SSRC. Note that with RTX there might be multiple\n            // SSRCs.\n            var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n                .map(function(line) {\n                  return SDPUtils.parseSsrcMedia(line);\n                })\n                .filter(function(obj) {\n                  return obj.attribute === 'cname';\n                })[0];\n            if (remoteSsrc) {\n              cname = remoteSsrc.value;\n            }\n\n            var isComplete = SDPUtils.matchPrefix(mediaSection,\n                'a=end-of-candidates', sessionpart).length > 0;\n            var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                .map(function(cand) {\n                  return SDPUtils.parseCandidate(cand);\n                })\n                .filter(function(cand) {\n                  return cand.component === '1';\n                });\n            if (description.type === 'offer' && !rejected) {\n              var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n                iceGatherer: self.transceivers[0].iceGatherer,\n                iceTransport: self.transceivers[0].iceTransport,\n                dtlsTransport: self.transceivers[0].dtlsTransport\n              } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n              if (isComplete) {\n                transports.iceTransport.setRemoteCandidates(cands);\n              }\n\n              localCapabilities = RTCRtpReceiver.getCapabilities(kind);\n\n              // filter RTX until additional stuff needed for RTX is implemented\n              // in adapter.js\n              localCapabilities.codecs = localCapabilities.codecs.filter(\n                  function(codec) {\n                    return codec.name !== 'rtx';\n                  });\n\n              sendEncodingParameters = [{\n                ssrc: (2 * sdpMLineIndex + 2) * 1001\n              }];\n\n              rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n\n              track = rtpReceiver.track;\n              receiverList.push([track, rtpReceiver]);\n              // FIXME: not correct when there are multiple streams but that is\n              // not currently supported in this shim.\n              stream.addTrack(track);\n\n              // FIXME: look at direction.\n              if (self.localStreams.length > 0 &&\n                  self.localStreams[0].getTracks().length >= sdpMLineIndex) {\n                var localTrack;\n                if (kind === 'audio') {\n                  localTrack = self.localStreams[0].getAudioTracks()[0];\n                } else if (kind === 'video') {\n                  localTrack = self.localStreams[0].getVideoTracks()[0];\n                }\n                if (localTrack) {\n                  rtpSender = new RTCRtpSender(localTrack,\n                      transports.dtlsTransport);\n                }\n              }\n\n              self.transceivers[sdpMLineIndex] = {\n                iceGatherer: transports.iceGatherer,\n                iceTransport: transports.iceTransport,\n                dtlsTransport: transports.dtlsTransport,\n                localCapabilities: localCapabilities,\n                remoteCapabilities: remoteCapabilities,\n                rtpSender: rtpSender,\n                rtpReceiver: rtpReceiver,\n                kind: kind,\n                mid: mid,\n                cname: cname,\n                sendEncodingParameters: sendEncodingParameters,\n                recvEncodingParameters: recvEncodingParameters\n              };\n              // Start the RTCRtpReceiver now. The RTPSender is started in\n              // setLocalDescription.\n              self._transceive(self.transceivers[sdpMLineIndex],\n                  false,\n                  direction === 'sendrecv' || direction === 'sendonly');\n            } else if (description.type === 'answer' && !rejected) {\n              transceiver = self.transceivers[sdpMLineIndex];\n              iceGatherer = transceiver.iceGatherer;\n              iceTransport = transceiver.iceTransport;\n              dtlsTransport = transceiver.dtlsTransport;\n              rtpSender = transceiver.rtpSender;\n              rtpReceiver = transceiver.rtpReceiver;\n              sendEncodingParameters = transceiver.sendEncodingParameters;\n              localCapabilities = transceiver.localCapabilities;\n\n              self.transceivers[sdpMLineIndex].recvEncodingParameters =\n                  recvEncodingParameters;\n              self.transceivers[sdpMLineIndex].remoteCapabilities =\n                  remoteCapabilities;\n              self.transceivers[sdpMLineIndex].cname = cname;\n\n              if ((isIceLite || isComplete) && cands.length) {\n                iceTransport.setRemoteCandidates(cands);\n              }\n              if (!self.usingBundle || sdpMLineIndex === 0) {\n                iceTransport.start(iceGatherer, remoteIceParameters,\n                    'controlling');\n                dtlsTransport.start(remoteDtlsParameters);\n              }\n\n              self._transceive(transceiver,\n                  direction === 'sendrecv' || direction === 'recvonly',\n                  direction === 'sendrecv' || direction === 'sendonly');\n\n              if (rtpReceiver &&\n                  (direction === 'sendrecv' || direction === 'sendonly')) {\n                track = rtpReceiver.track;\n                receiverList.push([track, rtpReceiver]);\n                stream.addTrack(track);\n              } else {\n                // FIXME: actually the receiver should be created later.\n                delete transceiver.rtpReceiver;\n              }\n            }\n          });\n\n          this.remoteDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-remote-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n          if (stream.getTracks().length) {\n            self.remoteStreams.push(stream);\n            window.setTimeout(function() {\n              var event = new Event('addstream');\n              event.stream = stream;\n              self.dispatchEvent(event);\n              if (self.onaddstream !== null) {\n                window.setTimeout(function() {\n                  self.onaddstream(event);\n                }, 0);\n              }\n\n              receiverList.forEach(function(item) {\n                var track = item[0];\n                var receiver = item[1];\n                var trackEvent = new Event('track');\n                trackEvent.track = track;\n                trackEvent.receiver = receiver;\n                trackEvent.streams = [stream];\n                self.dispatchEvent(event);\n                if (self.ontrack !== null) {\n                  window.setTimeout(function() {\n                    self.ontrack(trackEvent);\n                  }, 0);\n                }\n              });\n            }, 0);\n          }\n          if (arguments.length > 1 && typeof arguments[1] === 'function') {\n            window.setTimeout(arguments[1], 0);\n          }\n          return Promise.resolve();\n        };\n\n    window.RTCPeerConnection.prototype.close = function() {\n      this.transceivers.forEach(function(transceiver) {\n        /* not yet\n        if (transceiver.iceGatherer) {\n          transceiver.iceGatherer.close();\n        }\n        */\n        if (transceiver.iceTransport) {\n          transceiver.iceTransport.stop();\n        }\n        if (transceiver.dtlsTransport) {\n          transceiver.dtlsTransport.stop();\n        }\n        if (transceiver.rtpSender) {\n          transceiver.rtpSender.stop();\n        }\n        if (transceiver.rtpReceiver) {\n          transceiver.rtpReceiver.stop();\n        }\n      });\n      // FIXME: clean up tracks, local streams, remote streams, etc\n      this._updateSignalingState('closed');\n    };\n\n    // Update the signaling state.\n    window.RTCPeerConnection.prototype._updateSignalingState =\n        function(newState) {\n          this.signalingState = newState;\n          var event = new Event('signalingstatechange');\n          this.dispatchEvent(event);\n          if (this.onsignalingstatechange !== null) {\n            this.onsignalingstatechange(event);\n          }\n        };\n\n    // Determine whether to fire the negotiationneeded event.\n    window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded =\n        function() {\n          // Fire away (for now).\n          var event = new Event('negotiationneeded');\n          this.dispatchEvent(event);\n          if (this.onnegotiationneeded !== null) {\n            this.onnegotiationneeded(event);\n          }\n        };\n\n    // Update the connection state.\n    window.RTCPeerConnection.prototype._updateConnectionState = function() {\n      var self = this;\n      var newState;\n      var states = {\n        'new': 0,\n        closed: 0,\n        connecting: 0,\n        checking: 0,\n        connected: 0,\n        completed: 0,\n        failed: 0\n      };\n      this.transceivers.forEach(function(transceiver) {\n        states[transceiver.iceTransport.state]++;\n        states[transceiver.dtlsTransport.state]++;\n      });\n      // ICETransport.completed and connected are the same for this purpose.\n      states.connected += states.completed;\n\n      newState = 'new';\n      if (states.failed > 0) {\n        newState = 'failed';\n      } else if (states.connecting > 0 || states.checking > 0) {\n        newState = 'connecting';\n      } else if (states.disconnected > 0) {\n        newState = 'disconnected';\n      } else if (states.new > 0) {\n        newState = 'new';\n      } else if (states.connected > 0 || states.completed > 0) {\n        newState = 'connected';\n      }\n\n      if (newState !== self.iceConnectionState) {\n        self.iceConnectionState = newState;\n        var event = new Event('iceconnectionstatechange');\n        this.dispatchEvent(event);\n        if (this.oniceconnectionstatechange !== null) {\n          this.oniceconnectionstatechange(event);\n        }\n      }\n    };\n\n    window.RTCPeerConnection.prototype.createOffer = function() {\n      var self = this;\n      if (this._pendingOffer) {\n        throw new Error('createOffer called while there is a pending offer.');\n      }\n      var offerOptions;\n      if (arguments.length === 1 && typeof arguments[0] !== 'function') {\n        offerOptions = arguments[0];\n      } else if (arguments.length === 3) {\n        offerOptions = arguments[2];\n      }\n\n      var tracks = [];\n      var numAudioTracks = 0;\n      var numVideoTracks = 0;\n      // Default to sendrecv.\n      if (this.localStreams.length) {\n        numAudioTracks = this.localStreams[0].getAudioTracks().length;\n        numVideoTracks = this.localStreams[0].getVideoTracks().length;\n      }\n      // Determine number of audio and video tracks we need to send/recv.\n      if (offerOptions) {\n        // Reject Chrome legacy constraints.\n        if (offerOptions.mandatory || offerOptions.optional) {\n          throw new TypeError(\n              'Legacy mandatory/optional constraints not supported.');\n        }\n        if (offerOptions.offerToReceiveAudio !== undefined) {\n          numAudioTracks = offerOptions.offerToReceiveAudio;\n        }\n        if (offerOptions.offerToReceiveVideo !== undefined) {\n          numVideoTracks = offerOptions.offerToReceiveVideo;\n        }\n      }\n      if (this.localStreams.length) {\n        // Push local streams.\n        this.localStreams[0].getTracks().forEach(function(track) {\n          tracks.push({\n            kind: track.kind,\n            track: track,\n            wantReceive: track.kind === 'audio' ?\n                numAudioTracks > 0 : numVideoTracks > 0\n          });\n          if (track.kind === 'audio') {\n            numAudioTracks--;\n          } else if (track.kind === 'video') {\n            numVideoTracks--;\n          }\n        });\n      }\n      // Create M-lines for recvonly streams.\n      while (numAudioTracks > 0 || numVideoTracks > 0) {\n        if (numAudioTracks > 0) {\n          tracks.push({\n            kind: 'audio',\n            wantReceive: true\n          });\n          numAudioTracks--;\n        }\n        if (numVideoTracks > 0) {\n          tracks.push({\n            kind: 'video',\n            wantReceive: true\n          });\n          numVideoTracks--;\n        }\n      }\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      var transceivers = [];\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        // For each track, create an ice gatherer, ice transport,\n        // dtls transport, potentially rtpsender and rtpreceiver.\n        var track = mline.track;\n        var kind = mline.kind;\n        var mid = SDPUtils.generateIdentifier();\n\n        var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n          iceGatherer: transceivers[0].iceGatherer,\n          iceTransport: transceivers[0].iceTransport,\n          dtlsTransport: transceivers[0].dtlsTransport\n        } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n        var localCapabilities = RTCRtpSender.getCapabilities(kind);\n        // filter RTX until additional stuff needed for RTX is implemented\n        // in adapter.js\n        localCapabilities.codecs = localCapabilities.codecs.filter(\n            function(codec) {\n              return codec.name !== 'rtx';\n            });\n        localCapabilities.codecs.forEach(function(codec) {\n          // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552\n          // by adding level-asymmetry-allowed=1\n          if (codec.name === 'H264' &&\n              codec.parameters['level-asymmetry-allowed'] === undefined) {\n            codec.parameters['level-asymmetry-allowed'] = '1';\n          }\n        });\n\n        var rtpSender;\n        var rtpReceiver;\n\n        // generate an ssrc now, to be used later in rtpSender.send\n        var sendEncodingParameters = [{\n          ssrc: (2 * sdpMLineIndex + 1) * 1001\n        }];\n        if (track) {\n          rtpSender = new RTCRtpSender(track, transports.dtlsTransport);\n        }\n\n        if (mline.wantReceive) {\n          rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n        }\n\n        transceivers[sdpMLineIndex] = {\n          iceGatherer: transports.iceGatherer,\n          iceTransport: transports.iceTransport,\n          dtlsTransport: transports.dtlsTransport,\n          localCapabilities: localCapabilities,\n          remoteCapabilities: null,\n          rtpSender: rtpSender,\n          rtpReceiver: rtpReceiver,\n          kind: kind,\n          mid: mid,\n          sendEncodingParameters: sendEncodingParameters,\n          recvEncodingParameters: null\n        };\n      });\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        var transceiver = transceivers[sdpMLineIndex];\n        sdp += SDPUtils.writeMediaSection(transceiver,\n            transceiver.localCapabilities, 'offer', self.localStreams[0]);\n      });\n\n      this._pendingOffer = transceivers;\n      var desc = new RTCSessionDescription({\n        type: 'offer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.createAnswer = function() {\n      var self = this;\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      this.transceivers.forEach(function(transceiver) {\n        if (transceiver.isDatachannel) {\n          sdp += 'm=application 0 DTLS/SCTP 5000\\r\\n' +\n              'c=IN IP4 0.0.0.0\\r\\n' +\n              'a=mid:' + transceiver.mid + '\\r\\n';\n          return;\n        }\n        // Calculate intersection of capabilities.\n        var commonCapabilities = self._getCommonCapabilities(\n            transceiver.localCapabilities,\n            transceiver.remoteCapabilities);\n\n        sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities,\n            'answer', self.localStreams[0]);\n      });\n\n      var desc = new RTCSessionDescription({\n        type: 'answer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n      if (!candidate) {\n        this.transceivers.forEach(function(transceiver) {\n          transceiver.iceTransport.addRemoteCandidate({});\n        });\n      } else {\n        var mLineIndex = candidate.sdpMLineIndex;\n        if (candidate.sdpMid) {\n          for (var i = 0; i < this.transceivers.length; i++) {\n            if (this.transceivers[i].mid === candidate.sdpMid) {\n              mLineIndex = i;\n              break;\n            }\n          }\n        }\n        var transceiver = this.transceivers[mLineIndex];\n        if (transceiver) {\n          var cand = Object.keys(candidate.candidate).length > 0 ?\n              SDPUtils.parseCandidate(candidate.candidate) : {};\n          // Ignore Chrome's invalid candidates since Edge does not like them.\n          if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) {\n            return;\n          }\n          // Ignore RTCP candidates, we assume RTCP-MUX.\n          if (cand.component !== '1') {\n            return;\n          }\n          // A dirty hack to make samples work.\n          if (cand.type === 'endOfCandidates') {\n            cand = {};\n          }\n          transceiver.iceTransport.addRemoteCandidate(cand);\n\n          // update the remoteDescription.\n          var sections = SDPUtils.splitSections(this.remoteDescription.sdp);\n          sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim()\n              : 'a=end-of-candidates') + '\\r\\n';\n          this.remoteDescription.sdp = sections.join('');\n        }\n      }\n      if (arguments.length > 1 && typeof arguments[1] === 'function') {\n        window.setTimeout(arguments[1], 0);\n      }\n      return Promise.resolve();\n    };\n\n    window.RTCPeerConnection.prototype.getStats = function() {\n      var promises = [];\n      this.transceivers.forEach(function(transceiver) {\n        ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n            'dtlsTransport'].forEach(function(method) {\n              if (transceiver[method]) {\n                promises.push(transceiver[method].getStats());\n              }\n            });\n      });\n      var cb = arguments.length > 1 && typeof arguments[1] === 'function' &&\n          arguments[1];\n      return new Promise(function(resolve) {\n        // shim getStats with maplike support\n        var results = new Map();\n        Promise.all(promises).then(function(res) {\n          res.forEach(function(result) {\n            Object.keys(result).forEach(function(id) {\n              results.set(id, result[id]);\n              results[id] = result[id];\n            });\n          });\n          if (cb) {\n            window.setTimeout(cb, 0, results);\n          }\n          resolve(results);\n        });\n      });\n    };\n  }\n};\n\n// Expose public methods.\nmodule.exports = {\n  shimPeerConnection: edgeShim.shimPeerConnection,\n  shimGetUserMedia: require('./getusermedia')\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/webrtc-adapter/src/js/edge/edge_shim.js\n// module id = 463\n// module chunks = 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Severity: Minor
Found in app/assets/javascripts/metamaps.secret.bundle.js by fixme

TODO found
Open

    eval("/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n'use strict';\n\nvar _assign = __webpack_require__(176);\n\nvar CallbackQueue = __webpack_require__(230);\nvar PooledClass = __webpack_require__(223);\nvar ReactBrowserEventEmitter = __webpack_require__(278);\nvar ReactInputSelection = __webpack_require__(319);\nvar ReactInstrumentation = __webpack_require__(235);\nvar Transaction = __webpack_require__(241);\nvar ReactUpdateQueue = __webpack_require__(308);\n\n/**\n * Ensures that, when possible, the selection range (currently selected text\n * input) is not disturbed by performing the transaction.\n */\nvar SELECTION_RESTORATION = {\n  /**\n   * @return {Selection} Selection information.\n   */\n  initialize: ReactInputSelection.getSelectionInformation,\n  /**\n   * @param {Selection} sel Selection information returned from `initialize`.\n   */\n  close: ReactInputSelection.restoreSelection\n};\n\n/**\n * Suppresses events (blur/focus) that could be inadvertently dispatched due to\n * high level DOM manipulations (like temporarily removing a text input from the\n * DOM).\n */\nvar EVENT_SUPPRESSION = {\n  /**\n   * @return {boolean} The enabled status of `ReactBrowserEventEmitter` before\n   * the reconciliation.\n   */\n  initialize: function () {\n    var currentlyEnabled = ReactBrowserEventEmitter.isEnabled();\n    ReactBrowserEventEmitter.setEnabled(false);\n    return currentlyEnabled;\n  },\n\n  /**\n   * @param {boolean} previouslyEnabled Enabled status of\n   *   `ReactBrowserEventEmitter` before the reconciliation occurred. `close`\n   *   restores the previous value.\n   */\n  close: function (previouslyEnabled) {\n    ReactBrowserEventEmitter.setEnabled(previouslyEnabled);\n  }\n};\n\n/**\n * Provides a queue for collecting `componentDidMount` and\n * `componentDidUpdate` callbacks during the transaction.\n */\nvar ON_DOM_READY_QUEUEING = {\n  /**\n   * Initializes the internal `onDOMReady` queue.\n   */\n  initialize: function () {\n    this.reactMountReady.reset();\n  },\n\n  /**\n   * After DOM is flushed, invoke all registered `onDOMReady` callbacks.\n   */\n  close: function () {\n    this.reactMountReady.notifyAll();\n  }\n};\n\n/**\n * Executed within the scope of the `Transaction` instance. Consider these as\n * being member methods, but with an implied ordering while being isolated from\n * each other.\n */\nvar TRANSACTION_WRAPPERS = [SELECTION_RESTORATION, EVENT_SUPPRESSION, ON_DOM_READY_QUEUEING];\n\nif (true) {\n  TRANSACTION_WRAPPERS.push({\n    initialize: ReactInstrumentation.debugTool.onBeginFlush,\n    close: ReactInstrumentation.debugTool.onEndFlush\n  });\n}\n\n/**\n * Currently:\n * - The order that these are listed in the transaction is critical:\n * - Suppresses events.\n * - Restores selection range.\n *\n * Future:\n * - Restore document/overflow scroll positions that were unintentionally\n *   modified via DOM insertions above the top viewport boundary.\n * - Implement/integrate with customized constraint based layout system and keep\n *   track of which dimensions must be remeasured.\n *\n * @class ReactReconcileTransaction\n */\nfunction ReactReconcileTransaction(useCreateElement) {\n  this.reinitializeTransaction();\n  // Only server-side rendering really needs this option (see\n  // `ReactServerRendering`), but server-side uses\n  // `ReactServerRenderingTransaction` instead. This option is here so that it's\n  // accessible and defaults to false when `ReactDOMComponent` and\n  // `ReactDOMTextComponent` checks it in `mountComponent`.`\n  this.renderToStaticMarkup = false;\n  this.reactMountReady = CallbackQueue.getPooled(null);\n  this.useCreateElement = useCreateElement;\n}\n\nvar Mixin = {\n  /**\n   * @see Transaction\n   * @abstract\n   * @final\n   * @return {array<object>} List of operation wrap procedures.\n   *   TODO: convert to array<TransactionWrapper>\n   */\n  getTransactionWrappers: function () {\n    return TRANSACTION_WRAPPERS;\n  },\n\n  /**\n   * @return {object} The queue to collect `onDOMReady` callbacks with.\n   */\n  getReactMountReady: function () {\n    return this.reactMountReady;\n  },\n\n  /**\n   * @return {object} The queue to collect React async events.\n   */\n  getUpdateQueue: function () {\n    return ReactUpdateQueue;\n  },\n\n  /**\n   * Save current transaction state -- if the return value from this method is\n   * passed to `rollback`, the transaction will be reset to that state.\n   */\n  checkpoint: function () {\n    // reactMountReady is the our only stateful wrapper\n    return this.reactMountReady.checkpoint();\n  },\n\n  rollback: function (checkpoint) {\n    this.reactMountReady.rollback(checkpoint);\n  },\n\n  /**\n   * `PooledClass` looks for this, and will invoke this before allowing this\n   * instance to be reused.\n   */\n  destructor: function () {\n    CallbackQueue.release(this.reactMountReady);\n    this.reactMountReady = null;\n  }\n};\n\n_assign(ReactReconcileTransaction.prototype, Transaction, Mixin);\n\nPooledClass.addPoolingTo(ReactReconcileTransaction);\n\nmodule.exports = ReactReconcileTransaction;//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"318.js","sources":["/home/ubuntu/workspace/node_modules/react-dom/lib/ReactReconcileTransaction.js"],"sourcesContent":["/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n'use strict';\n\nvar _assign = require('object-assign');\n\nvar CallbackQueue = require('./CallbackQueue');\nvar PooledClass = require('./PooledClass');\nvar ReactBrowserEventEmitter = require('./ReactBrowserEventEmitter');\nvar ReactInputSelection = require('./ReactInputSelection');\nvar ReactInstrumentation = require('./ReactInstrumentation');\nvar Transaction = require('./Transaction');\nvar ReactUpdateQueue = require('./ReactUpdateQueue');\n\n/**\n * Ensures that, when possible, the selection range (currently selected text\n * input) is not disturbed by performing the transaction.\n */\nvar SELECTION_RESTORATION = {\n  /**\n   * @return {Selection} Selection information.\n   */\n  initialize: ReactInputSelection.getSelectionInformation,\n  /**\n   * @param {Selection} sel Selection information returned from `initialize`.\n   */\n  close: ReactInputSelection.restoreSelection\n};\n\n/**\n * Suppresses events (blur/focus) that could be inadvertently dispatched due to\n * high level DOM manipulations (like temporarily removing a text input from the\n * DOM).\n */\nvar EVENT_SUPPRESSION = {\n  /**\n   * @return {boolean} The enabled status of `ReactBrowserEventEmitter` before\n   * the reconciliation.\n   */\n  initialize: function () {\n    var currentlyEnabled = ReactBrowserEventEmitter.isEnabled();\n    ReactBrowserEventEmitter.setEnabled(false);\n    return currentlyEnabled;\n  },\n\n  /**\n   * @param {boolean} previouslyEnabled Enabled status of\n   *   `ReactBrowserEventEmitter` before the reconciliation occurred. `close`\n   *   restores the previous value.\n   */\n  close: function (previouslyEnabled) {\n    ReactBrowserEventEmitter.setEnabled(previouslyEnabled);\n  }\n};\n\n/**\n * Provides a queue for collecting `componentDidMount` and\n * `componentDidUpdate` callbacks during the transaction.\n */\nvar ON_DOM_READY_QUEUEING = {\n  /**\n   * Initializes the internal `onDOMReady` queue.\n   */\n  initialize: function () {\n    this.reactMountReady.reset();\n  },\n\n  /**\n   * After DOM is flushed, invoke all registered `onDOMReady` callbacks.\n   */\n  close: function () {\n    this.reactMountReady.notifyAll();\n  }\n};\n\n/**\n * Executed within the scope of the `Transaction` instance. Consider these as\n * being member methods, but with an implied ordering while being isolated from\n * each other.\n */\nvar TRANSACTION_WRAPPERS = [SELECTION_RESTORATION, EVENT_SUPPRESSION, ON_DOM_READY_QUEUEING];\n\nif (process.env.NODE_ENV !== 'production') {\n  TRANSACTION_WRAPPERS.push({\n    initialize: ReactInstrumentation.debugTool.onBeginFlush,\n    close: ReactInstrumentation.debugTool.onEndFlush\n  });\n}\n\n/**\n * Currently:\n * - The order that these are listed in the transaction is critical:\n * - Suppresses events.\n * - Restores selection range.\n *\n * Future:\n * - Restore document/overflow scroll positions that were unintentionally\n *   modified via DOM insertions above the top viewport boundary.\n * - Implement/integrate with customized constraint based layout system and keep\n *   track of which dimensions must be remeasured.\n *\n * @class ReactReconcileTransaction\n */\nfunction ReactReconcileTransaction(useCreateElement) {\n  this.reinitializeTransaction();\n  // Only server-side rendering really needs this option (see\n  // `ReactServerRendering`), but server-side uses\n  // `ReactServerRenderingTransaction` instead. This option is here so that it's\n  // accessible and defaults to false when `ReactDOMComponent` and\n  // `ReactDOMTextComponent` checks it in `mountComponent`.`\n  this.renderToStaticMarkup = false;\n  this.reactMountReady = CallbackQueue.getPooled(null);\n  this.useCreateElement = useCreateElement;\n}\n\nvar Mixin = {\n  /**\n   * @see Transaction\n   * @abstract\n   * @final\n   * @return {array<object>} List of operation wrap procedures.\n   *   TODO: convert to array<TransactionWrapper>\n   */\n  getTransactionWrappers: function () {\n    return TRANSACTION_WRAPPERS;\n  },\n\n  /**\n   * @return {object} The queue to collect `onDOMReady` callbacks with.\n   */\n  getReactMountReady: function () {\n    return this.reactMountReady;\n  },\n\n  /**\n   * @return {object} The queue to collect React async events.\n   */\n  getUpdateQueue: function () {\n    return ReactUpdateQueue;\n  },\n\n  /**\n   * Save current transaction state -- if the return value from this method is\n   * passed to `rollback`, the transaction will be reset to that state.\n   */\n  checkpoint: function () {\n    // reactMountReady is the our only stateful wrapper\n    return this.reactMountReady.checkpoint();\n  },\n\n  rollback: function (checkpoint) {\n    this.reactMountReady.rollback(checkpoint);\n  },\n\n  /**\n   * `PooledClass` looks for this, and will invoke this before allowing this\n   * instance to be reused.\n   */\n  destructor: function () {\n    CallbackQueue.release(this.reactMountReady);\n    this.reactMountReady = null;\n  }\n};\n\n_assign(ReactReconcileTransaction.prototype, Transaction, Mixin);\n\nPooledClass.addPoolingTo(ReactReconcileTransaction);\n\nmodule.exports = ReactReconcileTransaction;\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/react-dom/lib/ReactReconcileTransaction.js\n// module id = 318\n// module chunks = 0"],"mappings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sourceRoot":""}");
Severity: Minor
Found in app/assets/javascripts/metamaps.secret.bundle.js by fixme

FIXME found
Open

    eval("/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = __webpack_require__(452);\nvar browserDetails = __webpack_require__(460).browserDetails;\n\nvar edgeShim = {\n  shimPeerConnection: function() {\n    if (window.RTCIceGatherer) {\n      // ORTC defines an RTCIceCandidate object but no constructor.\n      // Not implemented in Edge.\n      if (!window.RTCIceCandidate) {\n        window.RTCIceCandidate = function(args) {\n          return args;\n        };\n      }\n      // ORTC does not have a session description object but\n      // other browsers (i.e. Chrome) that will support both PC and ORTC\n      // in the future might have this defined already.\n      if (!window.RTCSessionDescription) {\n        window.RTCSessionDescription = function(args) {\n          return args;\n        };\n      }\n      // this adds an additional event listener to MediaStrackTrack that signals\n      // when a tracks enabled property was changed.\n      var origMSTEnabled = Object.getOwnPropertyDescriptor(\n          MediaStreamTrack.prototype, 'enabled');\n      Object.defineProperty(MediaStreamTrack.prototype, 'enabled', {\n        set: function(value) {\n          origMSTEnabled.set.call(this, value);\n          var ev = new Event('enabled');\n          ev.enabled = value;\n          this.dispatchEvent(ev);\n        }\n      });\n    }\n\n    window.RTCPeerConnection = function(config) {\n      var self = this;\n\n      var _eventTarget = document.createDocumentFragment();\n      ['addEventListener', 'removeEventListener', 'dispatchEvent']\n          .forEach(function(method) {\n            self[method] = _eventTarget[method].bind(_eventTarget);\n          });\n\n      this.onicecandidate = null;\n      this.onaddstream = null;\n      this.ontrack = null;\n      this.onremovestream = null;\n      this.onsignalingstatechange = null;\n      this.oniceconnectionstatechange = null;\n      this.onnegotiationneeded = null;\n      this.ondatachannel = null;\n\n      this.localStreams = [];\n      this.remoteStreams = [];\n      this.getLocalStreams = function() {\n        return self.localStreams;\n      };\n      this.getRemoteStreams = function() {\n        return self.remoteStreams;\n      };\n\n      this.localDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.remoteDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.signalingState = 'stable';\n      this.iceConnectionState = 'new';\n      this.iceGatheringState = 'new';\n\n      this.iceOptions = {\n        gatherPolicy: 'all',\n        iceServers: []\n      };\n      if (config && config.iceTransportPolicy) {\n        switch (config.iceTransportPolicy) {\n          case 'all':\n          case 'relay':\n            this.iceOptions.gatherPolicy = config.iceTransportPolicy;\n            break;\n          case 'none':\n            // FIXME: remove once implementation and spec have added this.\n            throw new TypeError('iceTransportPolicy \"none\" not supported');\n          default:\n            // don't set iceTransportPolicy.\n            break;\n        }\n      }\n      this.usingBundle = config && config.bundlePolicy === 'max-bundle';\n\n      if (config && config.iceServers) {\n        // Edge does not like\n        // 1) stun:\n        // 2) turn: that does not have all of turn:host:port?transport=udp\n        // 3) turn: with ipv6 addresses\n        var iceServers = JSON.parse(JSON.stringify(config.iceServers));\n        this.iceOptions.iceServers = iceServers.filter(function(server) {\n          if (server && server.urls) {\n            var urls = server.urls;\n            if (typeof urls === 'string') {\n              urls = [urls];\n            }\n            urls = urls.filter(function(url) {\n              return (url.indexOf('turn:') === 0 &&\n                  url.indexOf('transport=udp') !== -1 &&\n                  url.indexOf('turn:[') === -1) ||\n                  (url.indexOf('stun:') === 0 &&\n                    browserDetails.version >= 14393);\n            })[0];\n            return !!urls;\n          }\n          return false;\n        });\n      }\n      this._config = config;\n\n      // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n      // everything that is needed to describe a SDP m-line.\n      this.transceivers = [];\n\n      // since the iceGatherer is currently created in createOffer but we\n      // must not emit candidates until after setLocalDescription we buffer\n      // them in this array.\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype._emitBufferedCandidates = function() {\n      var self = this;\n      var sections = SDPUtils.splitSections(self.localDescription.sdp);\n      // FIXME: need to apply ice candidates in a way which is async but\n      // in-order\n      this._localIceCandidatesBuffer.forEach(function(event) {\n        var end = !event.candidate || Object.keys(event.candidate).length === 0;\n        if (end) {\n          for (var j = 1; j < sections.length; j++) {\n            if (sections[j].indexOf('\\r\\na=end-of-candidates\\r\\n') === -1) {\n              sections[j] += 'a=end-of-candidates\\r\\n';\n            }\n          }\n        } else if (event.candidate.candidate.indexOf('typ endOfCandidates')\n            === -1) {\n          sections[event.candidate.sdpMLineIndex + 1] +=\n              'a=' + event.candidate.candidate + '\\r\\n';\n        }\n        self.localDescription.sdp = sections.join('');\n        self.dispatchEvent(event);\n        if (self.onicecandidate !== null) {\n          self.onicecandidate(event);\n        }\n        if (!event.candidate && self.iceGatheringState !== 'complete') {\n          var complete = self.transceivers.every(function(transceiver) {\n            return transceiver.iceGatherer &&\n                transceiver.iceGatherer.state === 'completed';\n          });\n          if (complete) {\n            self.iceGatheringState = 'complete';\n          }\n        }\n      });\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype.getConfiguration = function() {\n      return this._config;\n    };\n\n    window.RTCPeerConnection.prototype.addStream = function(stream) {\n      // Clone is necessary for local demos mostly, attaching directly\n      // to two different senders does not work (build 10547).\n      var clonedStream = stream.clone();\n      stream.getTracks().forEach(function(track, idx) {\n        var clonedTrack = clonedStream.getTracks()[idx];\n        track.addEventListener('enabled', function(event) {\n          clonedTrack.enabled = event.enabled;\n        });\n      });\n      this.localStreams.push(clonedStream);\n      this._maybeFireNegotiationNeeded();\n    };\n\n    window.RTCPeerConnection.prototype.removeStream = function(stream) {\n      var idx = this.localStreams.indexOf(stream);\n      if (idx > -1) {\n        this.localStreams.splice(idx, 1);\n        this._maybeFireNegotiationNeeded();\n      }\n    };\n\n    window.RTCPeerConnection.prototype.getSenders = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpSender;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpSender;\n      });\n    };\n\n    window.RTCPeerConnection.prototype.getReceivers = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpReceiver;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpReceiver;\n      });\n    };\n\n    // Determines the intersection of local and remote capabilities.\n    window.RTCPeerConnection.prototype._getCommonCapabilities =\n        function(localCapabilities, remoteCapabilities) {\n          var commonCapabilities = {\n            codecs: [],\n            headerExtensions: [],\n            fecMechanisms: []\n          };\n          localCapabilities.codecs.forEach(function(lCodec) {\n            for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n              var rCodec = remoteCapabilities.codecs[i];\n              if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n                  lCodec.clockRate === rCodec.clockRate) {\n                // number of channels is the highest common number of channels\n                rCodec.numChannels = Math.min(lCodec.numChannels,\n                    rCodec.numChannels);\n                // push rCodec so we reply with offerer payload type\n                commonCapabilities.codecs.push(rCodec);\n\n                // determine common feedback mechanisms\n                rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function(fb) {\n                  for (var j = 0; j < lCodec.rtcpFeedback.length; j++) {\n                    if (lCodec.rtcpFeedback[j].type === fb.type &&\n                        lCodec.rtcpFeedback[j].parameter === fb.parameter) {\n                      return true;\n                    }\n                  }\n                  return false;\n                });\n                // FIXME: also need to determine .parameters\n                //  see https://github.com/openpeer/ortc/issues/569\n                break;\n              }\n            }\n          });\n\n          localCapabilities.headerExtensions\n              .forEach(function(lHeaderExtension) {\n                for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n                     i++) {\n                  var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n                  if (lHeaderExtension.uri === rHeaderExtension.uri) {\n                    commonCapabilities.headerExtensions.push(rHeaderExtension);\n                    break;\n                  }\n                }\n              });\n\n          // FIXME: fecMechanisms\n          return commonCapabilities;\n        };\n\n    // Create ICE gatherer, ICE transport and DTLS transport.\n    window.RTCPeerConnection.prototype._createIceAndDtlsTransports =\n        function(mid, sdpMLineIndex) {\n          var self = this;\n          var iceGatherer = new RTCIceGatherer(self.iceOptions);\n          var iceTransport = new RTCIceTransport(iceGatherer);\n          iceGatherer.onlocalcandidate = function(evt) {\n            var event = new Event('icecandidate');\n            event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n            var cand = evt.candidate;\n            var end = !cand || Object.keys(cand).length === 0;\n            // Edge emits an empty object for RTCIceCandidateComplete‥\n            if (end) {\n              // polyfill since RTCIceGatherer.state is not implemented in\n              // Edge 10547 yet.\n              if (iceGatherer.state === undefined) {\n                iceGatherer.state = 'completed';\n              }\n\n              // Emit a candidate with type endOfCandidates to make the samples\n              // work. Edge requires addIceCandidate with this empty candidate\n              // to start checking. The real solution is to signal\n              // end-of-candidates to the other side when getting the null\n              // candidate but some apps (like the samples) don't do that.\n              event.candidate.candidate =\n                  'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates';\n            } else {\n              // RTCIceCandidate doesn't have a component, needs to be added\n              cand.component = iceTransport.component === 'RTCP' ? 2 : 1;\n              event.candidate.candidate = SDPUtils.writeCandidate(cand);\n            }\n\n            // update local description.\n            var sections = SDPUtils.splitSections(self.localDescription.sdp);\n            if (event.candidate.candidate.indexOf('typ endOfCandidates')\n                === -1) {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=' + event.candidate.candidate + '\\r\\n';\n            } else {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=end-of-candidates\\r\\n';\n            }\n            self.localDescription.sdp = sections.join('');\n\n            var complete = self.transceivers.every(function(transceiver) {\n              return transceiver.iceGatherer &&\n                  transceiver.iceGatherer.state === 'completed';\n            });\n\n            // Emit candidate if localDescription is set.\n            // Also emits null candidate when all gatherers are complete.\n            switch (self.iceGatheringState) {\n              case 'new':\n                self._localIceCandidatesBuffer.push(event);\n                if (end && complete) {\n                  self._localIceCandidatesBuffer.push(\n                      new Event('icecandidate'));\n                }\n                break;\n              case 'gathering':\n                self._emitBufferedCandidates();\n                self.dispatchEvent(event);\n                if (self.onicecandidate !== null) {\n                  self.onicecandidate(event);\n                }\n                if (complete) {\n                  self.dispatchEvent(new Event('icecandidate'));\n                  if (self.onicecandidate !== null) {\n                    self.onicecandidate(new Event('icecandidate'));\n                  }\n                  self.iceGatheringState = 'complete';\n                }\n                break;\n              case 'complete':\n                // should not happen... currently!\n                break;\n              default: // no-op.\n                break;\n            }\n          };\n          iceTransport.onicestatechange = function() {\n            self._updateConnectionState();\n          };\n\n          var dtlsTransport = new RTCDtlsTransport(iceTransport);\n          dtlsTransport.ondtlsstatechange = function() {\n            self._updateConnectionState();\n          };\n          dtlsTransport.onerror = function() {\n            // onerror does not set state to failed by itself.\n            dtlsTransport.state = 'failed';\n            self._updateConnectionState();\n          };\n\n          return {\n            iceGatherer: iceGatherer,\n            iceTransport: iceTransport,\n            dtlsTransport: dtlsTransport\n          };\n        };\n\n    // Start the RTP Sender and Receiver for a transceiver.\n    window.RTCPeerConnection.prototype._transceive = function(transceiver,\n        send, recv) {\n      var params = this._getCommonCapabilities(transceiver.localCapabilities,\n          transceiver.remoteCapabilities);\n      if (send && transceiver.rtpSender) {\n        params.encodings = transceiver.sendEncodingParameters;\n        params.rtcp = {\n          cname: SDPUtils.localCName\n        };\n        if (transceiver.recvEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpSender.send(params);\n      }\n      if (recv && transceiver.rtpReceiver) {\n        // remove RTX field in Edge 14942\n        if (transceiver.kind === 'video'\n            && transceiver.recvEncodingParameters) {\n          transceiver.recvEncodingParameters.forEach(function(p) {\n            delete p.rtx;\n          });\n        }\n        params.encodings = transceiver.recvEncodingParameters;\n        params.rtcp = {\n          cname: transceiver.cname\n        };\n        if (transceiver.sendEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpReceiver.receive(params);\n      }\n    };\n\n    window.RTCPeerConnection.prototype.setLocalDescription =\n        function(description) {\n          var self = this;\n          var sections;\n          var sessionpart;\n          if (description.type === 'offer') {\n            // FIXME: What was the purpose of this empty if statement?\n            // if (!this._pendingOffer) {\n            // } else {\n            if (this._pendingOffer) {\n              // VERY limited support for SDP munging. Limited to:\n              // * changing the order of codecs\n              sections = SDPUtils.splitSections(description.sdp);\n              sessionpart = sections.shift();\n              sections.forEach(function(mediaSection, sdpMLineIndex) {\n                var caps = SDPUtils.parseRtpParameters(mediaSection);\n                self._pendingOffer[sdpMLineIndex].localCapabilities = caps;\n              });\n              this.transceivers = this._pendingOffer;\n              delete this._pendingOffer;\n            }\n          } else if (description.type === 'answer') {\n            sections = SDPUtils.splitSections(self.remoteDescription.sdp);\n            sessionpart = sections.shift();\n            var isIceLite = SDPUtils.matchPrefix(sessionpart,\n                'a=ice-lite').length > 0;\n            sections.forEach(function(mediaSection, sdpMLineIndex) {\n              var transceiver = self.transceivers[sdpMLineIndex];\n              var iceGatherer = transceiver.iceGatherer;\n              var iceTransport = transceiver.iceTransport;\n              var dtlsTransport = transceiver.dtlsTransport;\n              var localCapabilities = transceiver.localCapabilities;\n              var remoteCapabilities = transceiver.remoteCapabilities;\n\n              var rejected = mediaSection.split('\\n', 1)[0]\n                  .split(' ', 2)[1] === '0';\n\n              if (!rejected && !transceiver.isDatachannel) {\n                var remoteIceParameters = SDPUtils.getIceParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                  .map(function(cand) {\n                    return SDPUtils.parseCandidate(cand);\n                  })\n                  .filter(function(cand) {\n                    return cand.component === '1';\n                  });\n                  // ice-lite only includes host candidates in the SDP so we can\n                  // use setRemoteCandidates (which implies an\n                  // RTCIceCandidateComplete)\n                  if (cands.length) {\n                    iceTransport.setRemoteCandidates(cands);\n                  }\n                }\n                var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  remoteDtlsParameters.role = 'server';\n                }\n\n                if (!self.usingBundle || sdpMLineIndex === 0) {\n                  iceTransport.start(iceGatherer, remoteIceParameters,\n                      isIceLite ? 'controlling' : 'controlled');\n                  dtlsTransport.start(remoteDtlsParameters);\n                }\n\n                // Calculate intersection of capabilities.\n                var params = self._getCommonCapabilities(localCapabilities,\n                    remoteCapabilities);\n\n                // Start the RTCRtpSender. The RTCRtpReceiver for this\n                // transceiver has already been started in setRemoteDescription.\n                self._transceive(transceiver,\n                    params.codecs.length > 0,\n                    false);\n              }\n            });\n          }\n\n          this.localDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-local-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n\n          // If a success callback was provided, emit ICE candidates after it\n          // has been executed. Otherwise, emit callback after the Promise is\n          // resolved.\n          var hasCallback = arguments.length > 1 &&\n            typeof arguments[1] === 'function';\n          if (hasCallback) {\n            var cb = arguments[1];\n            window.setTimeout(function() {\n              cb();\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              self._emitBufferedCandidates();\n            }, 0);\n          }\n          var p = Promise.resolve();\n          p.then(function() {\n            if (!hasCallback) {\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              // Usually candidates will be emitted earlier.\n              window.setTimeout(self._emitBufferedCandidates.bind(self), 500);\n            }\n          });\n          return p;\n        };\n\n    window.RTCPeerConnection.prototype.setRemoteDescription =\n        function(description) {\n          var self = this;\n          var stream = new MediaStream();\n          var receiverList = [];\n          var sections = SDPUtils.splitSections(description.sdp);\n          var sessionpart = sections.shift();\n          var isIceLite = SDPUtils.matchPrefix(sessionpart,\n              'a=ice-lite').length > 0;\n          this.usingBundle = SDPUtils.matchPrefix(sessionpart,\n              'a=group:BUNDLE ').length > 0;\n          sections.forEach(function(mediaSection, sdpMLineIndex) {\n            var lines = SDPUtils.splitLines(mediaSection);\n            var mline = lines[0].substr(2).split(' ');\n            var kind = mline[0];\n            var rejected = mline[1] === '0';\n            var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n\n            var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:');\n            if (mid.length) {\n              mid = mid[0].substr(6);\n            } else {\n              mid = SDPUtils.generateIdentifier();\n            }\n\n            // Reject datachannels which are not implemented yet.\n            if (kind === 'application' && mline[2] === 'DTLS/SCTP') {\n              self.transceivers[sdpMLineIndex] = {\n                mid: mid,\n                isDatachannel: true\n              };\n              return;\n            }\n\n            var transceiver;\n            var iceGatherer;\n            var iceTransport;\n            var dtlsTransport;\n            var rtpSender;\n            var rtpReceiver;\n            var sendEncodingParameters;\n            var recvEncodingParameters;\n            var localCapabilities;\n\n            var track;\n            // FIXME: ensure the mediaSection has rtcp-mux set.\n            var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n            var remoteIceParameters;\n            var remoteDtlsParameters;\n            if (!rejected) {\n              remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters.role = 'client';\n            }\n            recvEncodingParameters =\n                SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n            var cname;\n            // Gets the first SSRC. Note that with RTX there might be multiple\n            // SSRCs.\n            var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n                .map(function(line) {\n                  return SDPUtils.parseSsrcMedia(line);\n                })\n                .filter(function(obj) {\n                  return obj.attribute === 'cname';\n                })[0];\n            if (remoteSsrc) {\n              cname = remoteSsrc.value;\n            }\n\n            var isComplete = SDPUtils.matchPrefix(mediaSection,\n                'a=end-of-candidates', sessionpart).length > 0;\n            var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                .map(function(cand) {\n                  return SDPUtils.parseCandidate(cand);\n                })\n                .filter(function(cand) {\n                  return cand.component === '1';\n                });\n            if (description.type === 'offer' && !rejected) {\n              var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n                iceGatherer: self.transceivers[0].iceGatherer,\n                iceTransport: self.transceivers[0].iceTransport,\n                dtlsTransport: self.transceivers[0].dtlsTransport\n              } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n              if (isComplete) {\n                transports.iceTransport.setRemoteCandidates(cands);\n              }\n\n              localCapabilities = RTCRtpReceiver.getCapabilities(kind);\n\n              // filter RTX until additional stuff needed for RTX is implemented\n              // in adapter.js\n              localCapabilities.codecs = localCapabilities.codecs.filter(\n                  function(codec) {\n                    return codec.name !== 'rtx';\n                  });\n\n              sendEncodingParameters = [{\n                ssrc: (2 * sdpMLineIndex + 2) * 1001\n              }];\n\n              rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n\n              track = rtpReceiver.track;\n              receiverList.push([track, rtpReceiver]);\n              // FIXME: not correct when there are multiple streams but that is\n              // not currently supported in this shim.\n              stream.addTrack(track);\n\n              // FIXME: look at direction.\n              if (self.localStreams.length > 0 &&\n                  self.localStreams[0].getTracks().length >= sdpMLineIndex) {\n                var localTrack;\n                if (kind === 'audio') {\n                  localTrack = self.localStreams[0].getAudioTracks()[0];\n                } else if (kind === 'video') {\n                  localTrack = self.localStreams[0].getVideoTracks()[0];\n                }\n                if (localTrack) {\n                  rtpSender = new RTCRtpSender(localTrack,\n                      transports.dtlsTransport);\n                }\n              }\n\n              self.transceivers[sdpMLineIndex] = {\n                iceGatherer: transports.iceGatherer,\n                iceTransport: transports.iceTransport,\n                dtlsTransport: transports.dtlsTransport,\n                localCapabilities: localCapabilities,\n                remoteCapabilities: remoteCapabilities,\n                rtpSender: rtpSender,\n                rtpReceiver: rtpReceiver,\n                kind: kind,\n                mid: mid,\n                cname: cname,\n                sendEncodingParameters: sendEncodingParameters,\n                recvEncodingParameters: recvEncodingParameters\n              };\n              // Start the RTCRtpReceiver now. The RTPSender is started in\n              // setLocalDescription.\n              self._transceive(self.transceivers[sdpMLineIndex],\n                  false,\n                  direction === 'sendrecv' || direction === 'sendonly');\n            } else if (description.type === 'answer' && !rejected) {\n              transceiver = self.transceivers[sdpMLineIndex];\n              iceGatherer = transceiver.iceGatherer;\n              iceTransport = transceiver.iceTransport;\n              dtlsTransport = transceiver.dtlsTransport;\n              rtpSender = transceiver.rtpSender;\n              rtpReceiver = transceiver.rtpReceiver;\n              sendEncodingParameters = transceiver.sendEncodingParameters;\n              localCapabilities = transceiver.localCapabilities;\n\n              self.transceivers[sdpMLineIndex].recvEncodingParameters =\n                  recvEncodingParameters;\n              self.transceivers[sdpMLineIndex].remoteCapabilities =\n                  remoteCapabilities;\n              self.transceivers[sdpMLineIndex].cname = cname;\n\n              if ((isIceLite || isComplete) && cands.length) {\n                iceTransport.setRemoteCandidates(cands);\n              }\n              if (!self.usingBundle || sdpMLineIndex === 0) {\n                iceTransport.start(iceGatherer, remoteIceParameters,\n                    'controlling');\n                dtlsTransport.start(remoteDtlsParameters);\n              }\n\n              self._transceive(transceiver,\n                  direction === 'sendrecv' || direction === 'recvonly',\n                  direction === 'sendrecv' || direction === 'sendonly');\n\n              if (rtpReceiver &&\n                  (direction === 'sendrecv' || direction === 'sendonly')) {\n                track = rtpReceiver.track;\n                receiverList.push([track, rtpReceiver]);\n                stream.addTrack(track);\n              } else {\n                // FIXME: actually the receiver should be created later.\n                delete transceiver.rtpReceiver;\n              }\n            }\n          });\n\n          this.remoteDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-remote-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n          if (stream.getTracks().length) {\n            self.remoteStreams.push(stream);\n            window.setTimeout(function() {\n              var event = new Event('addstream');\n              event.stream = stream;\n              self.dispatchEvent(event);\n              if (self.onaddstream !== null) {\n                window.setTimeout(function() {\n                  self.onaddstream(event);\n                }, 0);\n              }\n\n              receiverList.forEach(function(item) {\n                var track = item[0];\n                var receiver = item[1];\n                var trackEvent = new Event('track');\n                trackEvent.track = track;\n                trackEvent.receiver = receiver;\n                trackEvent.streams = [stream];\n                self.dispatchEvent(event);\n                if (self.ontrack !== null) {\n                  window.setTimeout(function() {\n                    self.ontrack(trackEvent);\n                  }, 0);\n                }\n              });\n            }, 0);\n          }\n          if (arguments.length > 1 && typeof arguments[1] === 'function') {\n            window.setTimeout(arguments[1], 0);\n          }\n          return Promise.resolve();\n        };\n\n    window.RTCPeerConnection.prototype.close = function() {\n      this.transceivers.forEach(function(transceiver) {\n        /* not yet\n        if (transceiver.iceGatherer) {\n          transceiver.iceGatherer.close();\n        }\n        */\n        if (transceiver.iceTransport) {\n          transceiver.iceTransport.stop();\n        }\n        if (transceiver.dtlsTransport) {\n          transceiver.dtlsTransport.stop();\n        }\n        if (transceiver.rtpSender) {\n          transceiver.rtpSender.stop();\n        }\n        if (transceiver.rtpReceiver) {\n          transceiver.rtpReceiver.stop();\n        }\n      });\n      // FIXME: clean up tracks, local streams, remote streams, etc\n      this._updateSignalingState('closed');\n    };\n\n    // Update the signaling state.\n    window.RTCPeerConnection.prototype._updateSignalingState =\n        function(newState) {\n          this.signalingState = newState;\n          var event = new Event('signalingstatechange');\n          this.dispatchEvent(event);\n          if (this.onsignalingstatechange !== null) {\n            this.onsignalingstatechange(event);\n          }\n        };\n\n    // Determine whether to fire the negotiationneeded event.\n    window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded =\n        function() {\n          // Fire away (for now).\n          var event = new Event('negotiationneeded');\n          this.dispatchEvent(event);\n          if (this.onnegotiationneeded !== null) {\n            this.onnegotiationneeded(event);\n          }\n        };\n\n    // Update the connection state.\n    window.RTCPeerConnection.prototype._updateConnectionState = function() {\n      var self = this;\n      var newState;\n      var states = {\n        'new': 0,\n        closed: 0,\n        connecting: 0,\n        checking: 0,\n        connected: 0,\n        completed: 0,\n        failed: 0\n      };\n      this.transceivers.forEach(function(transceiver) {\n        states[transceiver.iceTransport.state]++;\n        states[transceiver.dtlsTransport.state]++;\n      });\n      // ICETransport.completed and connected are the same for this purpose.\n      states.connected += states.completed;\n\n      newState = 'new';\n      if (states.failed > 0) {\n        newState = 'failed';\n      } else if (states.connecting > 0 || states.checking > 0) {\n        newState = 'connecting';\n      } else if (states.disconnected > 0) {\n        newState = 'disconnected';\n      } else if (states.new > 0) {\n        newState = 'new';\n      } else if (states.connected > 0 || states.completed > 0) {\n        newState = 'connected';\n      }\n\n      if (newState !== self.iceConnectionState) {\n        self.iceConnectionState = newState;\n        var event = new Event('iceconnectionstatechange');\n        this.dispatchEvent(event);\n        if (this.oniceconnectionstatechange !== null) {\n          this.oniceconnectionstatechange(event);\n        }\n      }\n    };\n\n    window.RTCPeerConnection.prototype.createOffer = function() {\n      var self = this;\n      if (this._pendingOffer) {\n        throw new Error('createOffer called while there is a pending offer.');\n      }\n      var offerOptions;\n      if (arguments.length === 1 && typeof arguments[0] !== 'function') {\n        offerOptions = arguments[0];\n      } else if (arguments.length === 3) {\n        offerOptions = arguments[2];\n      }\n\n      var tracks = [];\n      var numAudioTracks = 0;\n      var numVideoTracks = 0;\n      // Default to sendrecv.\n      if (this.localStreams.length) {\n        numAudioTracks = this.localStreams[0].getAudioTracks().length;\n        numVideoTracks = this.localStreams[0].getVideoTracks().length;\n      }\n      // Determine number of audio and video tracks we need to send/recv.\n      if (offerOptions) {\n        // Reject Chrome legacy constraints.\n        if (offerOptions.mandatory || offerOptions.optional) {\n          throw new TypeError(\n              'Legacy mandatory/optional constraints not supported.');\n        }\n        if (offerOptions.offerToReceiveAudio !== undefined) {\n          numAudioTracks = offerOptions.offerToReceiveAudio;\n        }\n        if (offerOptions.offerToReceiveVideo !== undefined) {\n          numVideoTracks = offerOptions.offerToReceiveVideo;\n        }\n      }\n      if (this.localStreams.length) {\n        // Push local streams.\n        this.localStreams[0].getTracks().forEach(function(track) {\n          tracks.push({\n            kind: track.kind,\n            track: track,\n            wantReceive: track.kind === 'audio' ?\n                numAudioTracks > 0 : numVideoTracks > 0\n          });\n          if (track.kind === 'audio') {\n            numAudioTracks--;\n          } else if (track.kind === 'video') {\n            numVideoTracks--;\n          }\n        });\n      }\n      // Create M-lines for recvonly streams.\n      while (numAudioTracks > 0 || numVideoTracks > 0) {\n        if (numAudioTracks > 0) {\n          tracks.push({\n            kind: 'audio',\n            wantReceive: true\n          });\n          numAudioTracks--;\n        }\n        if (numVideoTracks > 0) {\n          tracks.push({\n            kind: 'video',\n            wantReceive: true\n          });\n          numVideoTracks--;\n        }\n      }\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      var transceivers = [];\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        // For each track, create an ice gatherer, ice transport,\n        // dtls transport, potentially rtpsender and rtpreceiver.\n        var track = mline.track;\n        var kind = mline.kind;\n        var mid = SDPUtils.generateIdentifier();\n\n        var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n          iceGatherer: transceivers[0].iceGatherer,\n          iceTransport: transceivers[0].iceTransport,\n          dtlsTransport: transceivers[0].dtlsTransport\n        } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n        var localCapabilities = RTCRtpSender.getCapabilities(kind);\n        // filter RTX until additional stuff needed for RTX is implemented\n        // in adapter.js\n        localCapabilities.codecs = localCapabilities.codecs.filter(\n            function(codec) {\n              return codec.name !== 'rtx';\n            });\n        localCapabilities.codecs.forEach(function(codec) {\n          // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552\n          // by adding level-asymmetry-allowed=1\n          if (codec.name === 'H264' &&\n              codec.parameters['level-asymmetry-allowed'] === undefined) {\n            codec.parameters['level-asymmetry-allowed'] = '1';\n          }\n        });\n\n        var rtpSender;\n        var rtpReceiver;\n\n        // generate an ssrc now, to be used later in rtpSender.send\n        var sendEncodingParameters = [{\n          ssrc: (2 * sdpMLineIndex + 1) * 1001\n        }];\n        if (track) {\n          rtpSender = new RTCRtpSender(track, transports.dtlsTransport);\n        }\n\n        if (mline.wantReceive) {\n          rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n        }\n\n        transceivers[sdpMLineIndex] = {\n          iceGatherer: transports.iceGatherer,\n          iceTransport: transports.iceTransport,\n          dtlsTransport: transports.dtlsTransport,\n          localCapabilities: localCapabilities,\n          remoteCapabilities: null,\n          rtpSender: rtpSender,\n          rtpReceiver: rtpReceiver,\n          kind: kind,\n          mid: mid,\n          sendEncodingParameters: sendEncodingParameters,\n          recvEncodingParameters: null\n        };\n      });\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        var transceiver = transceivers[sdpMLineIndex];\n        sdp += SDPUtils.writeMediaSection(transceiver,\n            transceiver.localCapabilities, 'offer', self.localStreams[0]);\n      });\n\n      this._pendingOffer = transceivers;\n      var desc = new RTCSessionDescription({\n        type: 'offer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.createAnswer = function() {\n      var self = this;\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      this.transceivers.forEach(function(transceiver) {\n        if (transceiver.isDatachannel) {\n          sdp += 'm=application 0 DTLS/SCTP 5000\\r\\n' +\n              'c=IN IP4 0.0.0.0\\r\\n' +\n              'a=mid:' + transceiver.mid + '\\r\\n';\n          return;\n        }\n        // Calculate intersection of capabilities.\n        var commonCapabilities = self._getCommonCapabilities(\n            transceiver.localCapabilities,\n            transceiver.remoteCapabilities);\n\n        sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities,\n            'answer', self.localStreams[0]);\n      });\n\n      var desc = new RTCSessionDescription({\n        type: 'answer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n      if (!candidate) {\n        this.transceivers.forEach(function(transceiver) {\n          transceiver.iceTransport.addRemoteCandidate({});\n        });\n      } else {\n        var mLineIndex = candidate.sdpMLineIndex;\n        if (candidate.sdpMid) {\n          for (var i = 0; i < this.transceivers.length; i++) {\n            if (this.transceivers[i].mid === candidate.sdpMid) {\n              mLineIndex = i;\n              break;\n            }\n          }\n        }\n        var transceiver = this.transceivers[mLineIndex];\n        if (transceiver) {\n          var cand = Object.keys(candidate.candidate).length > 0 ?\n              SDPUtils.parseCandidate(candidate.candidate) : {};\n          // Ignore Chrome's invalid candidates since Edge does not like them.\n          if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) {\n            return;\n          }\n          // Ignore RTCP candidates, we assume RTCP-MUX.\n          if (cand.component !== '1') {\n            return;\n          }\n          // A dirty hack to make samples work.\n          if (cand.type === 'endOfCandidates') {\n            cand = {};\n          }\n          transceiver.iceTransport.addRemoteCandidate(cand);\n\n          // update the remoteDescription.\n          var sections = SDPUtils.splitSections(this.remoteDescription.sdp);\n          sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim()\n              : 'a=end-of-candidates') + '\\r\\n';\n          this.remoteDescription.sdp = sections.join('');\n        }\n      }\n      if (arguments.length > 1 && typeof arguments[1] === 'function') {\n        window.setTimeout(arguments[1], 0);\n      }\n      return Promise.resolve();\n    };\n\n    window.RTCPeerConnection.prototype.getStats = function() {\n      var promises = [];\n      this.transceivers.forEach(function(transceiver) {\n        ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n            'dtlsTransport'].forEach(function(method) {\n              if (transceiver[method]) {\n                promises.push(transceiver[method].getStats());\n              }\n            });\n      });\n      var cb = arguments.length > 1 && typeof arguments[1] === 'function' &&\n          arguments[1];\n      return new Promise(function(resolve) {\n        // shim getStats with maplike support\n        var results = new Map();\n        Promise.all(promises).then(function(res) {\n          res.forEach(function(result) {\n            Object.keys(result).forEach(function(id) {\n              results.set(id, result[id]);\n              results[id] = result[id];\n            });\n          });\n          if (cb) {\n            window.setTimeout(cb, 0, results);\n          }\n          resolve(results);\n        });\n      });\n    };\n  }\n};\n\n// Expose public methods.\nmodule.exports = {\n  shimPeerConnection: edgeShim.shimPeerConnection,\n  shimGetUserMedia: __webpack_require__(464)\n};\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"463.js","sources":["/home/ubuntu/workspace/node_modules/webrtc-adapter/src/js/edge/edge_shim.js"],"sourcesContent":["/*\n *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n *  Use of this source code is governed by a BSD-style license\n *  that can be found in the LICENSE file in the root of the source\n *  tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = require('sdp');\nvar browserDetails = require('../utils').browserDetails;\n\nvar edgeShim = {\n  shimPeerConnection: function() {\n    if (window.RTCIceGatherer) {\n      // ORTC defines an RTCIceCandidate object but no constructor.\n      // Not implemented in Edge.\n      if (!window.RTCIceCandidate) {\n        window.RTCIceCandidate = function(args) {\n          return args;\n        };\n      }\n      // ORTC does not have a session description object but\n      // other browsers (i.e. Chrome) that will support both PC and ORTC\n      // in the future might have this defined already.\n      if (!window.RTCSessionDescription) {\n        window.RTCSessionDescription = function(args) {\n          return args;\n        };\n      }\n      // this adds an additional event listener to MediaStrackTrack that signals\n      // when a tracks enabled property was changed.\n      var origMSTEnabled = Object.getOwnPropertyDescriptor(\n          MediaStreamTrack.prototype, 'enabled');\n      Object.defineProperty(MediaStreamTrack.prototype, 'enabled', {\n        set: function(value) {\n          origMSTEnabled.set.call(this, value);\n          var ev = new Event('enabled');\n          ev.enabled = value;\n          this.dispatchEvent(ev);\n        }\n      });\n    }\n\n    window.RTCPeerConnection = function(config) {\n      var self = this;\n\n      var _eventTarget = document.createDocumentFragment();\n      ['addEventListener', 'removeEventListener', 'dispatchEvent']\n          .forEach(function(method) {\n            self[method] = _eventTarget[method].bind(_eventTarget);\n          });\n\n      this.onicecandidate = null;\n      this.onaddstream = null;\n      this.ontrack = null;\n      this.onremovestream = null;\n      this.onsignalingstatechange = null;\n      this.oniceconnectionstatechange = null;\n      this.onnegotiationneeded = null;\n      this.ondatachannel = null;\n\n      this.localStreams = [];\n      this.remoteStreams = [];\n      this.getLocalStreams = function() {\n        return self.localStreams;\n      };\n      this.getRemoteStreams = function() {\n        return self.remoteStreams;\n      };\n\n      this.localDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.remoteDescription = new RTCSessionDescription({\n        type: '',\n        sdp: ''\n      });\n      this.signalingState = 'stable';\n      this.iceConnectionState = 'new';\n      this.iceGatheringState = 'new';\n\n      this.iceOptions = {\n        gatherPolicy: 'all',\n        iceServers: []\n      };\n      if (config && config.iceTransportPolicy) {\n        switch (config.iceTransportPolicy) {\n          case 'all':\n          case 'relay':\n            this.iceOptions.gatherPolicy = config.iceTransportPolicy;\n            break;\n          case 'none':\n            // FIXME: remove once implementation and spec have added this.\n            throw new TypeError('iceTransportPolicy \"none\" not supported');\n          default:\n            // don't set iceTransportPolicy.\n            break;\n        }\n      }\n      this.usingBundle = config && config.bundlePolicy === 'max-bundle';\n\n      if (config && config.iceServers) {\n        // Edge does not like\n        // 1) stun:\n        // 2) turn: that does not have all of turn:host:port?transport=udp\n        // 3) turn: with ipv6 addresses\n        var iceServers = JSON.parse(JSON.stringify(config.iceServers));\n        this.iceOptions.iceServers = iceServers.filter(function(server) {\n          if (server && server.urls) {\n            var urls = server.urls;\n            if (typeof urls === 'string') {\n              urls = [urls];\n            }\n            urls = urls.filter(function(url) {\n              return (url.indexOf('turn:') === 0 &&\n                  url.indexOf('transport=udp') !== -1 &&\n                  url.indexOf('turn:[') === -1) ||\n                  (url.indexOf('stun:') === 0 &&\n                    browserDetails.version >= 14393);\n            })[0];\n            return !!urls;\n          }\n          return false;\n        });\n      }\n      this._config = config;\n\n      // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n      // everything that is needed to describe a SDP m-line.\n      this.transceivers = [];\n\n      // since the iceGatherer is currently created in createOffer but we\n      // must not emit candidates until after setLocalDescription we buffer\n      // them in this array.\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype._emitBufferedCandidates = function() {\n      var self = this;\n      var sections = SDPUtils.splitSections(self.localDescription.sdp);\n      // FIXME: need to apply ice candidates in a way which is async but\n      // in-order\n      this._localIceCandidatesBuffer.forEach(function(event) {\n        var end = !event.candidate || Object.keys(event.candidate).length === 0;\n        if (end) {\n          for (var j = 1; j < sections.length; j++) {\n            if (sections[j].indexOf('\\r\\na=end-of-candidates\\r\\n') === -1) {\n              sections[j] += 'a=end-of-candidates\\r\\n';\n            }\n          }\n        } else if (event.candidate.candidate.indexOf('typ endOfCandidates')\n            === -1) {\n          sections[event.candidate.sdpMLineIndex + 1] +=\n              'a=' + event.candidate.candidate + '\\r\\n';\n        }\n        self.localDescription.sdp = sections.join('');\n        self.dispatchEvent(event);\n        if (self.onicecandidate !== null) {\n          self.onicecandidate(event);\n        }\n        if (!event.candidate && self.iceGatheringState !== 'complete') {\n          var complete = self.transceivers.every(function(transceiver) {\n            return transceiver.iceGatherer &&\n                transceiver.iceGatherer.state === 'completed';\n          });\n          if (complete) {\n            self.iceGatheringState = 'complete';\n          }\n        }\n      });\n      this._localIceCandidatesBuffer = [];\n    };\n\n    window.RTCPeerConnection.prototype.getConfiguration = function() {\n      return this._config;\n    };\n\n    window.RTCPeerConnection.prototype.addStream = function(stream) {\n      // Clone is necessary for local demos mostly, attaching directly\n      // to two different senders does not work (build 10547).\n      var clonedStream = stream.clone();\n      stream.getTracks().forEach(function(track, idx) {\n        var clonedTrack = clonedStream.getTracks()[idx];\n        track.addEventListener('enabled', function(event) {\n          clonedTrack.enabled = event.enabled;\n        });\n      });\n      this.localStreams.push(clonedStream);\n      this._maybeFireNegotiationNeeded();\n    };\n\n    window.RTCPeerConnection.prototype.removeStream = function(stream) {\n      var idx = this.localStreams.indexOf(stream);\n      if (idx > -1) {\n        this.localStreams.splice(idx, 1);\n        this._maybeFireNegotiationNeeded();\n      }\n    };\n\n    window.RTCPeerConnection.prototype.getSenders = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpSender;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpSender;\n      });\n    };\n\n    window.RTCPeerConnection.prototype.getReceivers = function() {\n      return this.transceivers.filter(function(transceiver) {\n        return !!transceiver.rtpReceiver;\n      })\n      .map(function(transceiver) {\n        return transceiver.rtpReceiver;\n      });\n    };\n\n    // Determines the intersection of local and remote capabilities.\n    window.RTCPeerConnection.prototype._getCommonCapabilities =\n        function(localCapabilities, remoteCapabilities) {\n          var commonCapabilities = {\n            codecs: [],\n            headerExtensions: [],\n            fecMechanisms: []\n          };\n          localCapabilities.codecs.forEach(function(lCodec) {\n            for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n              var rCodec = remoteCapabilities.codecs[i];\n              if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n                  lCodec.clockRate === rCodec.clockRate) {\n                // number of channels is the highest common number of channels\n                rCodec.numChannels = Math.min(lCodec.numChannels,\n                    rCodec.numChannels);\n                // push rCodec so we reply with offerer payload type\n                commonCapabilities.codecs.push(rCodec);\n\n                // determine common feedback mechanisms\n                rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function(fb) {\n                  for (var j = 0; j < lCodec.rtcpFeedback.length; j++) {\n                    if (lCodec.rtcpFeedback[j].type === fb.type &&\n                        lCodec.rtcpFeedback[j].parameter === fb.parameter) {\n                      return true;\n                    }\n                  }\n                  return false;\n                });\n                // FIXME: also need to determine .parameters\n                //  see https://github.com/openpeer/ortc/issues/569\n                break;\n              }\n            }\n          });\n\n          localCapabilities.headerExtensions\n              .forEach(function(lHeaderExtension) {\n                for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n                     i++) {\n                  var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n                  if (lHeaderExtension.uri === rHeaderExtension.uri) {\n                    commonCapabilities.headerExtensions.push(rHeaderExtension);\n                    break;\n                  }\n                }\n              });\n\n          // FIXME: fecMechanisms\n          return commonCapabilities;\n        };\n\n    // Create ICE gatherer, ICE transport and DTLS transport.\n    window.RTCPeerConnection.prototype._createIceAndDtlsTransports =\n        function(mid, sdpMLineIndex) {\n          var self = this;\n          var iceGatherer = new RTCIceGatherer(self.iceOptions);\n          var iceTransport = new RTCIceTransport(iceGatherer);\n          iceGatherer.onlocalcandidate = function(evt) {\n            var event = new Event('icecandidate');\n            event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n            var cand = evt.candidate;\n            var end = !cand || Object.keys(cand).length === 0;\n            // Edge emits an empty object for RTCIceCandidateComplete‥\n            if (end) {\n              // polyfill since RTCIceGatherer.state is not implemented in\n              // Edge 10547 yet.\n              if (iceGatherer.state === undefined) {\n                iceGatherer.state = 'completed';\n              }\n\n              // Emit a candidate with type endOfCandidates to make the samples\n              // work. Edge requires addIceCandidate with this empty candidate\n              // to start checking. The real solution is to signal\n              // end-of-candidates to the other side when getting the null\n              // candidate but some apps (like the samples) don't do that.\n              event.candidate.candidate =\n                  'candidate:1 1 udp 1 0.0.0.0 9 typ endOfCandidates';\n            } else {\n              // RTCIceCandidate doesn't have a component, needs to be added\n              cand.component = iceTransport.component === 'RTCP' ? 2 : 1;\n              event.candidate.candidate = SDPUtils.writeCandidate(cand);\n            }\n\n            // update local description.\n            var sections = SDPUtils.splitSections(self.localDescription.sdp);\n            if (event.candidate.candidate.indexOf('typ endOfCandidates')\n                === -1) {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=' + event.candidate.candidate + '\\r\\n';\n            } else {\n              sections[event.candidate.sdpMLineIndex + 1] +=\n                  'a=end-of-candidates\\r\\n';\n            }\n            self.localDescription.sdp = sections.join('');\n\n            var complete = self.transceivers.every(function(transceiver) {\n              return transceiver.iceGatherer &&\n                  transceiver.iceGatherer.state === 'completed';\n            });\n\n            // Emit candidate if localDescription is set.\n            // Also emits null candidate when all gatherers are complete.\n            switch (self.iceGatheringState) {\n              case 'new':\n                self._localIceCandidatesBuffer.push(event);\n                if (end && complete) {\n                  self._localIceCandidatesBuffer.push(\n                      new Event('icecandidate'));\n                }\n                break;\n              case 'gathering':\n                self._emitBufferedCandidates();\n                self.dispatchEvent(event);\n                if (self.onicecandidate !== null) {\n                  self.onicecandidate(event);\n                }\n                if (complete) {\n                  self.dispatchEvent(new Event('icecandidate'));\n                  if (self.onicecandidate !== null) {\n                    self.onicecandidate(new Event('icecandidate'));\n                  }\n                  self.iceGatheringState = 'complete';\n                }\n                break;\n              case 'complete':\n                // should not happen... currently!\n                break;\n              default: // no-op.\n                break;\n            }\n          };\n          iceTransport.onicestatechange = function() {\n            self._updateConnectionState();\n          };\n\n          var dtlsTransport = new RTCDtlsTransport(iceTransport);\n          dtlsTransport.ondtlsstatechange = function() {\n            self._updateConnectionState();\n          };\n          dtlsTransport.onerror = function() {\n            // onerror does not set state to failed by itself.\n            dtlsTransport.state = 'failed';\n            self._updateConnectionState();\n          };\n\n          return {\n            iceGatherer: iceGatherer,\n            iceTransport: iceTransport,\n            dtlsTransport: dtlsTransport\n          };\n        };\n\n    // Start the RTP Sender and Receiver for a transceiver.\n    window.RTCPeerConnection.prototype._transceive = function(transceiver,\n        send, recv) {\n      var params = this._getCommonCapabilities(transceiver.localCapabilities,\n          transceiver.remoteCapabilities);\n      if (send && transceiver.rtpSender) {\n        params.encodings = transceiver.sendEncodingParameters;\n        params.rtcp = {\n          cname: SDPUtils.localCName\n        };\n        if (transceiver.recvEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpSender.send(params);\n      }\n      if (recv && transceiver.rtpReceiver) {\n        // remove RTX field in Edge 14942\n        if (transceiver.kind === 'video'\n            && transceiver.recvEncodingParameters) {\n          transceiver.recvEncodingParameters.forEach(function(p) {\n            delete p.rtx;\n          });\n        }\n        params.encodings = transceiver.recvEncodingParameters;\n        params.rtcp = {\n          cname: transceiver.cname\n        };\n        if (transceiver.sendEncodingParameters.length) {\n          params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n        }\n        transceiver.rtpReceiver.receive(params);\n      }\n    };\n\n    window.RTCPeerConnection.prototype.setLocalDescription =\n        function(description) {\n          var self = this;\n          var sections;\n          var sessionpart;\n          if (description.type === 'offer') {\n            // FIXME: What was the purpose of this empty if statement?\n            // if (!this._pendingOffer) {\n            // } else {\n            if (this._pendingOffer) {\n              // VERY limited support for SDP munging. Limited to:\n              // * changing the order of codecs\n              sections = SDPUtils.splitSections(description.sdp);\n              sessionpart = sections.shift();\n              sections.forEach(function(mediaSection, sdpMLineIndex) {\n                var caps = SDPUtils.parseRtpParameters(mediaSection);\n                self._pendingOffer[sdpMLineIndex].localCapabilities = caps;\n              });\n              this.transceivers = this._pendingOffer;\n              delete this._pendingOffer;\n            }\n          } else if (description.type === 'answer') {\n            sections = SDPUtils.splitSections(self.remoteDescription.sdp);\n            sessionpart = sections.shift();\n            var isIceLite = SDPUtils.matchPrefix(sessionpart,\n                'a=ice-lite').length > 0;\n            sections.forEach(function(mediaSection, sdpMLineIndex) {\n              var transceiver = self.transceivers[sdpMLineIndex];\n              var iceGatherer = transceiver.iceGatherer;\n              var iceTransport = transceiver.iceTransport;\n              var dtlsTransport = transceiver.dtlsTransport;\n              var localCapabilities = transceiver.localCapabilities;\n              var remoteCapabilities = transceiver.remoteCapabilities;\n\n              var rejected = mediaSection.split('\\n', 1)[0]\n                  .split(' ', 2)[1] === '0';\n\n              if (!rejected && !transceiver.isDatachannel) {\n                var remoteIceParameters = SDPUtils.getIceParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                  .map(function(cand) {\n                    return SDPUtils.parseCandidate(cand);\n                  })\n                  .filter(function(cand) {\n                    return cand.component === '1';\n                  });\n                  // ice-lite only includes host candidates in the SDP so we can\n                  // use setRemoteCandidates (which implies an\n                  // RTCIceCandidateComplete)\n                  if (cands.length) {\n                    iceTransport.setRemoteCandidates(cands);\n                  }\n                }\n                var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n                    mediaSection, sessionpart);\n                if (isIceLite) {\n                  remoteDtlsParameters.role = 'server';\n                }\n\n                if (!self.usingBundle || sdpMLineIndex === 0) {\n                  iceTransport.start(iceGatherer, remoteIceParameters,\n                      isIceLite ? 'controlling' : 'controlled');\n                  dtlsTransport.start(remoteDtlsParameters);\n                }\n\n                // Calculate intersection of capabilities.\n                var params = self._getCommonCapabilities(localCapabilities,\n                    remoteCapabilities);\n\n                // Start the RTCRtpSender. The RTCRtpReceiver for this\n                // transceiver has already been started in setRemoteDescription.\n                self._transceive(transceiver,\n                    params.codecs.length > 0,\n                    false);\n              }\n            });\n          }\n\n          this.localDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-local-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n\n          // If a success callback was provided, emit ICE candidates after it\n          // has been executed. Otherwise, emit callback after the Promise is\n          // resolved.\n          var hasCallback = arguments.length > 1 &&\n            typeof arguments[1] === 'function';\n          if (hasCallback) {\n            var cb = arguments[1];\n            window.setTimeout(function() {\n              cb();\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              self._emitBufferedCandidates();\n            }, 0);\n          }\n          var p = Promise.resolve();\n          p.then(function() {\n            if (!hasCallback) {\n              if (self.iceGatheringState === 'new') {\n                self.iceGatheringState = 'gathering';\n              }\n              // Usually candidates will be emitted earlier.\n              window.setTimeout(self._emitBufferedCandidates.bind(self), 500);\n            }\n          });\n          return p;\n        };\n\n    window.RTCPeerConnection.prototype.setRemoteDescription =\n        function(description) {\n          var self = this;\n          var stream = new MediaStream();\n          var receiverList = [];\n          var sections = SDPUtils.splitSections(description.sdp);\n          var sessionpart = sections.shift();\n          var isIceLite = SDPUtils.matchPrefix(sessionpart,\n              'a=ice-lite').length > 0;\n          this.usingBundle = SDPUtils.matchPrefix(sessionpart,\n              'a=group:BUNDLE ').length > 0;\n          sections.forEach(function(mediaSection, sdpMLineIndex) {\n            var lines = SDPUtils.splitLines(mediaSection);\n            var mline = lines[0].substr(2).split(' ');\n            var kind = mline[0];\n            var rejected = mline[1] === '0';\n            var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n\n            var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:');\n            if (mid.length) {\n              mid = mid[0].substr(6);\n            } else {\n              mid = SDPUtils.generateIdentifier();\n            }\n\n            // Reject datachannels which are not implemented yet.\n            if (kind === 'application' && mline[2] === 'DTLS/SCTP') {\n              self.transceivers[sdpMLineIndex] = {\n                mid: mid,\n                isDatachannel: true\n              };\n              return;\n            }\n\n            var transceiver;\n            var iceGatherer;\n            var iceTransport;\n            var dtlsTransport;\n            var rtpSender;\n            var rtpReceiver;\n            var sendEncodingParameters;\n            var recvEncodingParameters;\n            var localCapabilities;\n\n            var track;\n            // FIXME: ensure the mediaSection has rtcp-mux set.\n            var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n            var remoteIceParameters;\n            var remoteDtlsParameters;\n            if (!rejected) {\n              remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n                  sessionpart);\n              remoteDtlsParameters.role = 'client';\n            }\n            recvEncodingParameters =\n                SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n            var cname;\n            // Gets the first SSRC. Note that with RTX there might be multiple\n            // SSRCs.\n            var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n                .map(function(line) {\n                  return SDPUtils.parseSsrcMedia(line);\n                })\n                .filter(function(obj) {\n                  return obj.attribute === 'cname';\n                })[0];\n            if (remoteSsrc) {\n              cname = remoteSsrc.value;\n            }\n\n            var isComplete = SDPUtils.matchPrefix(mediaSection,\n                'a=end-of-candidates', sessionpart).length > 0;\n            var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n                .map(function(cand) {\n                  return SDPUtils.parseCandidate(cand);\n                })\n                .filter(function(cand) {\n                  return cand.component === '1';\n                });\n            if (description.type === 'offer' && !rejected) {\n              var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n                iceGatherer: self.transceivers[0].iceGatherer,\n                iceTransport: self.transceivers[0].iceTransport,\n                dtlsTransport: self.transceivers[0].dtlsTransport\n              } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n              if (isComplete) {\n                transports.iceTransport.setRemoteCandidates(cands);\n              }\n\n              localCapabilities = RTCRtpReceiver.getCapabilities(kind);\n\n              // filter RTX until additional stuff needed for RTX is implemented\n              // in adapter.js\n              localCapabilities.codecs = localCapabilities.codecs.filter(\n                  function(codec) {\n                    return codec.name !== 'rtx';\n                  });\n\n              sendEncodingParameters = [{\n                ssrc: (2 * sdpMLineIndex + 2) * 1001\n              }];\n\n              rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n\n              track = rtpReceiver.track;\n              receiverList.push([track, rtpReceiver]);\n              // FIXME: not correct when there are multiple streams but that is\n              // not currently supported in this shim.\n              stream.addTrack(track);\n\n              // FIXME: look at direction.\n              if (self.localStreams.length > 0 &&\n                  self.localStreams[0].getTracks().length >= sdpMLineIndex) {\n                var localTrack;\n                if (kind === 'audio') {\n                  localTrack = self.localStreams[0].getAudioTracks()[0];\n                } else if (kind === 'video') {\n                  localTrack = self.localStreams[0].getVideoTracks()[0];\n                }\n                if (localTrack) {\n                  rtpSender = new RTCRtpSender(localTrack,\n                      transports.dtlsTransport);\n                }\n              }\n\n              self.transceivers[sdpMLineIndex] = {\n                iceGatherer: transports.iceGatherer,\n                iceTransport: transports.iceTransport,\n                dtlsTransport: transports.dtlsTransport,\n                localCapabilities: localCapabilities,\n                remoteCapabilities: remoteCapabilities,\n                rtpSender: rtpSender,\n                rtpReceiver: rtpReceiver,\n                kind: kind,\n                mid: mid,\n                cname: cname,\n                sendEncodingParameters: sendEncodingParameters,\n                recvEncodingParameters: recvEncodingParameters\n              };\n              // Start the RTCRtpReceiver now. The RTPSender is started in\n              // setLocalDescription.\n              self._transceive(self.transceivers[sdpMLineIndex],\n                  false,\n                  direction === 'sendrecv' || direction === 'sendonly');\n            } else if (description.type === 'answer' && !rejected) {\n              transceiver = self.transceivers[sdpMLineIndex];\n              iceGatherer = transceiver.iceGatherer;\n              iceTransport = transceiver.iceTransport;\n              dtlsTransport = transceiver.dtlsTransport;\n              rtpSender = transceiver.rtpSender;\n              rtpReceiver = transceiver.rtpReceiver;\n              sendEncodingParameters = transceiver.sendEncodingParameters;\n              localCapabilities = transceiver.localCapabilities;\n\n              self.transceivers[sdpMLineIndex].recvEncodingParameters =\n                  recvEncodingParameters;\n              self.transceivers[sdpMLineIndex].remoteCapabilities =\n                  remoteCapabilities;\n              self.transceivers[sdpMLineIndex].cname = cname;\n\n              if ((isIceLite || isComplete) && cands.length) {\n                iceTransport.setRemoteCandidates(cands);\n              }\n              if (!self.usingBundle || sdpMLineIndex === 0) {\n                iceTransport.start(iceGatherer, remoteIceParameters,\n                    'controlling');\n                dtlsTransport.start(remoteDtlsParameters);\n              }\n\n              self._transceive(transceiver,\n                  direction === 'sendrecv' || direction === 'recvonly',\n                  direction === 'sendrecv' || direction === 'sendonly');\n\n              if (rtpReceiver &&\n                  (direction === 'sendrecv' || direction === 'sendonly')) {\n                track = rtpReceiver.track;\n                receiverList.push([track, rtpReceiver]);\n                stream.addTrack(track);\n              } else {\n                // FIXME: actually the receiver should be created later.\n                delete transceiver.rtpReceiver;\n              }\n            }\n          });\n\n          this.remoteDescription = {\n            type: description.type,\n            sdp: description.sdp\n          };\n          switch (description.type) {\n            case 'offer':\n              this._updateSignalingState('have-remote-offer');\n              break;\n            case 'answer':\n              this._updateSignalingState('stable');\n              break;\n            default:\n              throw new TypeError('unsupported type \"' + description.type +\n                  '\"');\n          }\n          if (stream.getTracks().length) {\n            self.remoteStreams.push(stream);\n            window.setTimeout(function() {\n              var event = new Event('addstream');\n              event.stream = stream;\n              self.dispatchEvent(event);\n              if (self.onaddstream !== null) {\n                window.setTimeout(function() {\n                  self.onaddstream(event);\n                }, 0);\n              }\n\n              receiverList.forEach(function(item) {\n                var track = item[0];\n                var receiver = item[1];\n                var trackEvent = new Event('track');\n                trackEvent.track = track;\n                trackEvent.receiver = receiver;\n                trackEvent.streams = [stream];\n                self.dispatchEvent(event);\n                if (self.ontrack !== null) {\n                  window.setTimeout(function() {\n                    self.ontrack(trackEvent);\n                  }, 0);\n                }\n              });\n            }, 0);\n          }\n          if (arguments.length > 1 && typeof arguments[1] === 'function') {\n            window.setTimeout(arguments[1], 0);\n          }\n          return Promise.resolve();\n        };\n\n    window.RTCPeerConnection.prototype.close = function() {\n      this.transceivers.forEach(function(transceiver) {\n        /* not yet\n        if (transceiver.iceGatherer) {\n          transceiver.iceGatherer.close();\n        }\n        */\n        if (transceiver.iceTransport) {\n          transceiver.iceTransport.stop();\n        }\n        if (transceiver.dtlsTransport) {\n          transceiver.dtlsTransport.stop();\n        }\n        if (transceiver.rtpSender) {\n          transceiver.rtpSender.stop();\n        }\n        if (transceiver.rtpReceiver) {\n          transceiver.rtpReceiver.stop();\n        }\n      });\n      // FIXME: clean up tracks, local streams, remote streams, etc\n      this._updateSignalingState('closed');\n    };\n\n    // Update the signaling state.\n    window.RTCPeerConnection.prototype._updateSignalingState =\n        function(newState) {\n          this.signalingState = newState;\n          var event = new Event('signalingstatechange');\n          this.dispatchEvent(event);\n          if (this.onsignalingstatechange !== null) {\n            this.onsignalingstatechange(event);\n          }\n        };\n\n    // Determine whether to fire the negotiationneeded event.\n    window.RTCPeerConnection.prototype._maybeFireNegotiationNeeded =\n        function() {\n          // Fire away (for now).\n          var event = new Event('negotiationneeded');\n          this.dispatchEvent(event);\n          if (this.onnegotiationneeded !== null) {\n            this.onnegotiationneeded(event);\n          }\n        };\n\n    // Update the connection state.\n    window.RTCPeerConnection.prototype._updateConnectionState = function() {\n      var self = this;\n      var newState;\n      var states = {\n        'new': 0,\n        closed: 0,\n        connecting: 0,\n        checking: 0,\n        connected: 0,\n        completed: 0,\n        failed: 0\n      };\n      this.transceivers.forEach(function(transceiver) {\n        states[transceiver.iceTransport.state]++;\n        states[transceiver.dtlsTransport.state]++;\n      });\n      // ICETransport.completed and connected are the same for this purpose.\n      states.connected += states.completed;\n\n      newState = 'new';\n      if (states.failed > 0) {\n        newState = 'failed';\n      } else if (states.connecting > 0 || states.checking > 0) {\n        newState = 'connecting';\n      } else if (states.disconnected > 0) {\n        newState = 'disconnected';\n      } else if (states.new > 0) {\n        newState = 'new';\n      } else if (states.connected > 0 || states.completed > 0) {\n        newState = 'connected';\n      }\n\n      if (newState !== self.iceConnectionState) {\n        self.iceConnectionState = newState;\n        var event = new Event('iceconnectionstatechange');\n        this.dispatchEvent(event);\n        if (this.oniceconnectionstatechange !== null) {\n          this.oniceconnectionstatechange(event);\n        }\n      }\n    };\n\n    window.RTCPeerConnection.prototype.createOffer = function() {\n      var self = this;\n      if (this._pendingOffer) {\n        throw new Error('createOffer called while there is a pending offer.');\n      }\n      var offerOptions;\n      if (arguments.length === 1 && typeof arguments[0] !== 'function') {\n        offerOptions = arguments[0];\n      } else if (arguments.length === 3) {\n        offerOptions = arguments[2];\n      }\n\n      var tracks = [];\n      var numAudioTracks = 0;\n      var numVideoTracks = 0;\n      // Default to sendrecv.\n      if (this.localStreams.length) {\n        numAudioTracks = this.localStreams[0].getAudioTracks().length;\n        numVideoTracks = this.localStreams[0].getVideoTracks().length;\n      }\n      // Determine number of audio and video tracks we need to send/recv.\n      if (offerOptions) {\n        // Reject Chrome legacy constraints.\n        if (offerOptions.mandatory || offerOptions.optional) {\n          throw new TypeError(\n              'Legacy mandatory/optional constraints not supported.');\n        }\n        if (offerOptions.offerToReceiveAudio !== undefined) {\n          numAudioTracks = offerOptions.offerToReceiveAudio;\n        }\n        if (offerOptions.offerToReceiveVideo !== undefined) {\n          numVideoTracks = offerOptions.offerToReceiveVideo;\n        }\n      }\n      if (this.localStreams.length) {\n        // Push local streams.\n        this.localStreams[0].getTracks().forEach(function(track) {\n          tracks.push({\n            kind: track.kind,\n            track: track,\n            wantReceive: track.kind === 'audio' ?\n                numAudioTracks > 0 : numVideoTracks > 0\n          });\n          if (track.kind === 'audio') {\n            numAudioTracks--;\n          } else if (track.kind === 'video') {\n            numVideoTracks--;\n          }\n        });\n      }\n      // Create M-lines for recvonly streams.\n      while (numAudioTracks > 0 || numVideoTracks > 0) {\n        if (numAudioTracks > 0) {\n          tracks.push({\n            kind: 'audio',\n            wantReceive: true\n          });\n          numAudioTracks--;\n        }\n        if (numVideoTracks > 0) {\n          tracks.push({\n            kind: 'video',\n            wantReceive: true\n          });\n          numVideoTracks--;\n        }\n      }\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      var transceivers = [];\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        // For each track, create an ice gatherer, ice transport,\n        // dtls transport, potentially rtpsender and rtpreceiver.\n        var track = mline.track;\n        var kind = mline.kind;\n        var mid = SDPUtils.generateIdentifier();\n\n        var transports = self.usingBundle && sdpMLineIndex > 0 ? {\n          iceGatherer: transceivers[0].iceGatherer,\n          iceTransport: transceivers[0].iceTransport,\n          dtlsTransport: transceivers[0].dtlsTransport\n        } : self._createIceAndDtlsTransports(mid, sdpMLineIndex);\n\n        var localCapabilities = RTCRtpSender.getCapabilities(kind);\n        // filter RTX until additional stuff needed for RTX is implemented\n        // in adapter.js\n        localCapabilities.codecs = localCapabilities.codecs.filter(\n            function(codec) {\n              return codec.name !== 'rtx';\n            });\n        localCapabilities.codecs.forEach(function(codec) {\n          // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552\n          // by adding level-asymmetry-allowed=1\n          if (codec.name === 'H264' &&\n              codec.parameters['level-asymmetry-allowed'] === undefined) {\n            codec.parameters['level-asymmetry-allowed'] = '1';\n          }\n        });\n\n        var rtpSender;\n        var rtpReceiver;\n\n        // generate an ssrc now, to be used later in rtpSender.send\n        var sendEncodingParameters = [{\n          ssrc: (2 * sdpMLineIndex + 1) * 1001\n        }];\n        if (track) {\n          rtpSender = new RTCRtpSender(track, transports.dtlsTransport);\n        }\n\n        if (mline.wantReceive) {\n          rtpReceiver = new RTCRtpReceiver(transports.dtlsTransport, kind);\n        }\n\n        transceivers[sdpMLineIndex] = {\n          iceGatherer: transports.iceGatherer,\n          iceTransport: transports.iceTransport,\n          dtlsTransport: transports.dtlsTransport,\n          localCapabilities: localCapabilities,\n          remoteCapabilities: null,\n          rtpSender: rtpSender,\n          rtpReceiver: rtpReceiver,\n          kind: kind,\n          mid: mid,\n          sendEncodingParameters: sendEncodingParameters,\n          recvEncodingParameters: null\n        };\n      });\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      tracks.forEach(function(mline, sdpMLineIndex) {\n        var transceiver = transceivers[sdpMLineIndex];\n        sdp += SDPUtils.writeMediaSection(transceiver,\n            transceiver.localCapabilities, 'offer', self.localStreams[0]);\n      });\n\n      this._pendingOffer = transceivers;\n      var desc = new RTCSessionDescription({\n        type: 'offer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.createAnswer = function() {\n      var self = this;\n\n      var sdp = SDPUtils.writeSessionBoilerplate();\n      if (this.usingBundle) {\n        sdp += 'a=group:BUNDLE ' + this.transceivers.map(function(t) {\n          return t.mid;\n        }).join(' ') + '\\r\\n';\n      }\n      this.transceivers.forEach(function(transceiver) {\n        if (transceiver.isDatachannel) {\n          sdp += 'm=application 0 DTLS/SCTP 5000\\r\\n' +\n              'c=IN IP4 0.0.0.0\\r\\n' +\n              'a=mid:' + transceiver.mid + '\\r\\n';\n          return;\n        }\n        // Calculate intersection of capabilities.\n        var commonCapabilities = self._getCommonCapabilities(\n            transceiver.localCapabilities,\n            transceiver.remoteCapabilities);\n\n        sdp += SDPUtils.writeMediaSection(transceiver, commonCapabilities,\n            'answer', self.localStreams[0]);\n      });\n\n      var desc = new RTCSessionDescription({\n        type: 'answer',\n        sdp: sdp\n      });\n      if (arguments.length && typeof arguments[0] === 'function') {\n        window.setTimeout(arguments[0], 0, desc);\n      }\n      return Promise.resolve(desc);\n    };\n\n    window.RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n      if (!candidate) {\n        this.transceivers.forEach(function(transceiver) {\n          transceiver.iceTransport.addRemoteCandidate({});\n        });\n      } else {\n        var mLineIndex = candidate.sdpMLineIndex;\n        if (candidate.sdpMid) {\n          for (var i = 0; i < this.transceivers.length; i++) {\n            if (this.transceivers[i].mid === candidate.sdpMid) {\n              mLineIndex = i;\n              break;\n            }\n          }\n        }\n        var transceiver = this.transceivers[mLineIndex];\n        if (transceiver) {\n          var cand = Object.keys(candidate.candidate).length > 0 ?\n              SDPUtils.parseCandidate(candidate.candidate) : {};\n          // Ignore Chrome's invalid candidates since Edge does not like them.\n          if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) {\n            return;\n          }\n          // Ignore RTCP candidates, we assume RTCP-MUX.\n          if (cand.component !== '1') {\n            return;\n          }\n          // A dirty hack to make samples work.\n          if (cand.type === 'endOfCandidates') {\n            cand = {};\n          }\n          transceiver.iceTransport.addRemoteCandidate(cand);\n\n          // update the remoteDescription.\n          var sections = SDPUtils.splitSections(this.remoteDescription.sdp);\n          sections[mLineIndex + 1] += (cand.type ? candidate.candidate.trim()\n              : 'a=end-of-candidates') + '\\r\\n';\n          this.remoteDescription.sdp = sections.join('');\n        }\n      }\n      if (arguments.length > 1 && typeof arguments[1] === 'function') {\n        window.setTimeout(arguments[1], 0);\n      }\n      return Promise.resolve();\n    };\n\n    window.RTCPeerConnection.prototype.getStats = function() {\n      var promises = [];\n      this.transceivers.forEach(function(transceiver) {\n        ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n            'dtlsTransport'].forEach(function(method) {\n              if (transceiver[method]) {\n                promises.push(transceiver[method].getStats());\n              }\n            });\n      });\n      var cb = arguments.length > 1 && typeof arguments[1] === 'function' &&\n          arguments[1];\n      return new Promise(function(resolve) {\n        // shim getStats with maplike support\n        var results = new Map();\n        Promise.all(promises).then(function(res) {\n          res.forEach(function(result) {\n            Object.keys(result).forEach(function(id) {\n              results.set(id, result[id]);\n              results[id] = result[id];\n            });\n          });\n          if (cb) {\n            window.setTimeout(cb, 0, results);\n          }\n          resolve(results);\n        });\n      });\n    };\n  }\n};\n\n// Expose public methods.\nmodule.exports = {\n  shimPeerConnection: edgeShim.shimPeerConnection,\n  shimGetUserMedia: require('./getusermedia')\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/webrtc-adapter/src/js/edge/edge_shim.js\n// module id = 463\n// module chunks = 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Severity: Minor
Found in app/assets/javascripts/metamaps.secret.bundle.js by fixme

FIXME found
Open

    eval("var util = __webpack_require__(438);\nvar SJJ = __webpack_require__(472);\nvar WildEmitter = __webpack_require__(445);\nvar Peerconn = __webpack_require__(477);\nvar adapter = __webpack_require__(459);\nvar cloneDeep = __webpack_require__(487);\n\nfunction PeerConnection(config, constraints) {\n    var self = this;\n    var item;\n    WildEmitter.call(this);\n\n    config = config || {};\n    config.iceServers = config.iceServers || [];\n\n    var detectedBrowser = adapter.browserDetails.browser;\n\n    // make sure this only gets enabled in Google Chrome\n    // EXPERIMENTAL FLAG, might get removed without notice\n    this.enableChromeNativeSimulcast = false;\n    if (constraints && constraints.optional &&\n            detectedBrowser === 'chrome' &&\n            navigator.appVersion.match(/Chromium\\//) === null) {\n        constraints.optional.forEach(function (constraint) {\n            if (constraint.enableChromeNativeSimulcast) {\n                self.enableChromeNativeSimulcast = true;\n            }\n        });\n    }\n\n    // EXPERIMENTAL FLAG, might get removed without notice\n    this.enableMultiStreamHacks = false;\n    if (constraints && constraints.optional &&\n            detectedBrowser === 'chrome') {\n        constraints.optional.forEach(function (constraint) {\n            if (constraint.enableMultiStreamHacks) {\n                self.enableMultiStreamHacks = true;\n            }\n        });\n    }\n    // EXPERIMENTAL FLAG, might get removed without notice\n    this.restrictBandwidth = 0;\n    if (constraints && constraints.optional) {\n        constraints.optional.forEach(function (constraint) {\n            if (constraint.andyetRestrictBandwidth) {\n                self.restrictBandwidth = constraint.andyetRestrictBandwidth;\n            }\n        });\n    }\n\n    // EXPERIMENTAL FLAG, might get removed without notice\n    // bundle up ice candidates, only works for jingle mode\n    // number > 0 is the delay to wait for additional candidates\n    // ~20ms seems good\n    this.batchIceCandidates = 0;\n    if (constraints && constraints.optional) {\n        constraints.optional.forEach(function (constraint) {\n            if (constraint.andyetBatchIce) {\n                self.batchIceCandidates = constraint.andyetBatchIce;\n            }\n        });\n    }\n    this.batchedIceCandidates = [];\n\n    // EXPERIMENTAL FLAG, might get removed without notice\n    // this attemps to strip out candidates with an already known foundation\n    // and type -- i.e. those which are gathered via the same TURN server\n    // but different transports (TURN udp, tcp and tls respectively)\n    if (constraints && constraints.optional && detectedBrowser === 'chrome') {\n        constraints.optional.forEach(function (constraint) {\n            if (constraint.andyetFasterICE) {\n                self.eliminateDuplicateCandidates = constraint.andyetFasterICE;\n            }\n        });\n    }\n    // EXPERIMENTAL FLAG, might get removed without notice\n    // when using a server such as the jitsi videobridge we don't need to signal\n    // our candidates\n    if (constraints && constraints.optional) {\n        constraints.optional.forEach(function (constraint) {\n            if (constraint.andyetDontSignalCandidates) {\n                self.dontSignalCandidates = constraint.andyetDontSignalCandidates;\n            }\n        });\n    }\n\n\n    // EXPERIMENTAL FLAG, might get removed without notice\n    this.assumeSetLocalSuccess = false;\n    if (constraints && constraints.optional) {\n        constraints.optional.forEach(function (constraint) {\n            if (constraint.andyetAssumeSetLocalSuccess) {\n                self.assumeSetLocalSuccess = constraint.andyetAssumeSetLocalSuccess;\n            }\n        });\n    }\n\n    // EXPERIMENTAL FLAG, might get removed without notice\n    // working around https://bugzilla.mozilla.org/show_bug.cgi?id=1087551\n    // pass in a timeout for this\n    if (detectedBrowser === 'firefox') {\n        if (constraints && constraints.optional) {\n            this.wtFirefox = 0;\n            constraints.optional.forEach(function (constraint) {\n                if (constraint.andyetFirefoxMakesMeSad) {\n                    self.wtFirefox = constraint.andyetFirefoxMakesMeSad;\n                    if (self.wtFirefox > 0) {\n                        self.firefoxcandidatebuffer = [];\n                    }\n                }\n            });\n        }\n    }\n\n\n    this.pc = new Peerconn(config, constraints);\n\n    this.getLocalStreams = this.pc.getLocalStreams.bind(this.pc);\n    this.getRemoteStreams = this.pc.getRemoteStreams.bind(this.pc);\n    this.addStream = this.pc.addStream.bind(this.pc);\n    this.removeStream = this.pc.removeStream.bind(this.pc);\n\n    // proxy events\n    this.pc.on('*', function () {\n        self.emit.apply(self, arguments);\n    });\n\n    // proxy some events directly\n    this.pc.onremovestream = this.emit.bind(this, 'removeStream');\n    this.pc.onaddstream = this.emit.bind(this, 'addStream');\n    this.pc.onnegotiationneeded = this.emit.bind(this, 'negotiationNeeded');\n    this.pc.oniceconnectionstatechange = this.emit.bind(this, 'iceConnectionStateChange');\n    this.pc.onsignalingstatechange = this.emit.bind(this, 'signalingStateChange');\n\n    // handle ice candidate and data channel events\n    this.pc.onicecandidate = this._onIce.bind(this);\n    this.pc.ondatachannel = this._onDataChannel.bind(this);\n\n    this.localDescription = {\n        contents: []\n    };\n    this.remoteDescription = {\n        contents: []\n    };\n\n    this.config = {\n        debug: false,\n        sid: '',\n        isInitiator: true,\n        sdpSessionID: Date.now(),\n        useJingle: false\n    };\n\n    this.iceCredentials = {\n        local: {},\n        remote: {}\n    };\n\n    // apply our config\n    for (item in config) {\n        this.config[item] = config[item];\n    }\n\n    if (this.config.debug) {\n        this.on('*', function () {\n            var logger = config.logger || console;\n            logger.log('PeerConnection event:', arguments);\n        });\n    }\n    this.hadLocalStunCandidate = false;\n    this.hadRemoteStunCandidate = false;\n    this.hadLocalRelayCandidate = false;\n    this.hadRemoteRelayCandidate = false;\n\n    this.hadLocalIPv6Candidate = false;\n    this.hadRemoteIPv6Candidate = false;\n\n    // keeping references for all our data channels\n    // so they dont get garbage collected\n    // can be removed once the following bugs have been fixed\n    // https://crbug.com/405545\n    // https://bugzilla.mozilla.org/show_bug.cgi?id=964092\n    // to be filed for opera\n    this._remoteDataChannels = [];\n    this._localDataChannels = [];\n\n    this._candidateBuffer = [];\n}\n\nutil.inherits(PeerConnection, WildEmitter);\n\nObject.defineProperty(PeerConnection.prototype, 'signalingState', {\n    get: function () {\n        return this.pc.signalingState;\n    }\n});\nObject.defineProperty(PeerConnection.prototype, 'iceConnectionState', {\n    get: function () {\n        return this.pc.iceConnectionState;\n    }\n});\n\nPeerConnection.prototype._role = function () {\n    return this.isInitiator ? 'initiator' : 'responder';\n};\n\n// Add a stream to the peer connection object\nPeerConnection.prototype.addStream = function (stream) {\n    this.localStream = stream;\n    this.pc.addStream(stream);\n};\n\n// helper function to check if a remote candidate is a stun/relay\n// candidate or an ipv6 candidate\nPeerConnection.prototype._checkLocalCandidate = function (candidate) {\n    var cand = SJJ.toCandidateJSON(candidate);\n    if (cand.type == 'srflx') {\n        this.hadLocalStunCandidate = true;\n    } else if (cand.type == 'relay') {\n        this.hadLocalRelayCandidate = true;\n    }\n    if (cand.ip.indexOf(':') != -1) {\n        this.hadLocalIPv6Candidate = true;\n    }\n};\n\n// helper function to check if a remote candidate is a stun/relay\n// candidate or an ipv6 candidate\nPeerConnection.prototype._checkRemoteCandidate = function (candidate) {\n    var cand = SJJ.toCandidateJSON(candidate);\n    if (cand.type == 'srflx') {\n        this.hadRemoteStunCandidate = true;\n    } else if (cand.type == 'relay') {\n        this.hadRemoteRelayCandidate = true;\n    }\n    if (cand.ip.indexOf(':') != -1) {\n        this.hadRemoteIPv6Candidate = true;\n    }\n};\n\n\n// Init and add ice candidate object with correct constructor\nPeerConnection.prototype.processIce = function (update, cb) {\n    cb = cb || function () {};\n    var self = this;\n\n    // ignore any added ice candidates to avoid errors. why does the\n    // spec not do this?\n    if (this.pc.signalingState === 'closed') return cb();\n\n    if (update.contents || (update.jingle && update.jingle.contents)) {\n        var contentNames = this.remoteDescription.contents.map(function (c) { return c.name; });\n        var contents = update.contents || update.jingle.contents;\n\n        contents.forEach(function (content) {\n            var transport = content.transport || {};\n            var candidates = transport.candidates || [];\n            var mline = contentNames.indexOf(content.name);\n            var mid = content.name;\n            var remoteContent = self.remoteDescription.contents.find(function (c) {\n                return c.name === content.name;\n            });\n\n            // process candidates as a callback, in case we need to\n            // update ufrag and pwd with offer/answer\n            var processCandidates = function () {\n                candidates.forEach(\n                    function (candidate) {\n                    var iceCandidate = SJJ.toCandidateSDP(candidate) + '\\r\\n';\n                    self.pc.addIceCandidate(\n                        new RTCIceCandidate({\n                            candidate: iceCandidate,\n                            sdpMLineIndex: mline,\n                            sdpMid: mid\n                        }), function () {\n                            // well, this success callback is pretty meaningless\n                        },\n                        function (err) {\n                            self.emit('error', err);\n                        }\n                    );\n                    self._checkRemoteCandidate(iceCandidate);\n                });\n                cb();\n            };\n\n            if (self.iceCredentials.remote[content.name] && transport.ufrag &&\n                self.iceCredentials.remote[content.name].ufrag !== transport.ufrag) {\n                if (remoteContent) {\n                    remoteContent.transport.ufrag = transport.ufrag;\n                    remoteContent.transport.pwd = transport.pwd;\n                    var offer = {\n                        type: 'offer',\n                        jingle: self.remoteDescription\n                    };\n                    offer.sdp = SJJ.toSessionSDP(offer.jingle, {\n                        sid: self.config.sdpSessionID,\n                        role: self._role(),\n                        direction: 'incoming'\n                    });\n                    self.pc.setRemoteDescription(new RTCSessionDescription(offer),\n                        function () {\n                            processCandidates();\n                        },\n                        function (err) {\n                            self.emit('error', err);\n                        }\n                    );\n                } else {\n                    self.emit('error', 'ice restart failed to find matching content');\n                }\n            } else {\n                processCandidates();\n            }\n        });\n    } else {\n        // working around https://code.google.com/p/webrtc/issues/detail?id=3669\n        if (update.candidate && update.candidate.candidate.indexOf('a=') !== 0) {\n            update.candidate.candidate = 'a=' + update.candidate.candidate;\n        }\n\n        if (this.wtFirefox && this.firefoxcandidatebuffer !== null) {\n            // we cant add this yet due to https://bugzilla.mozilla.org/show_bug.cgi?id=1087551\n            if (this.pc.localDescription && this.pc.localDescription.type === 'offer') {\n                this.firefoxcandidatebuffer.push(update.candidate);\n                return cb();\n            }\n        }\n\n        self.pc.addIceCandidate(\n            new RTCIceCandidate(update.candidate),\n            function () { },\n            function (err) {\n                self.emit('error', err);\n            }\n        );\n        self._checkRemoteCandidate(update.candidate.candidate);\n        cb();\n    }\n};\n\n// Generate and emit an offer with the given constraints\nPeerConnection.prototype.offer = function (constraints, cb) {\n    var self = this;\n    var hasConstraints = arguments.length === 2;\n    var mediaConstraints = hasConstraints && constraints ? constraints : {\n            offerToReceiveAudio: 1,\n            offerToReceiveVideo: 1\n        };\n    cb = hasConstraints ? cb : constraints;\n    cb = cb || function () {};\n\n    if (this.pc.signalingState === 'closed') return cb('Already closed');\n\n    // Actually generate the offer\n    this.pc.createOffer(\n        function (offer) {\n            // does not work for jingle, but jingle.js doesn't need\n            // this hack...\n            var expandedOffer = {\n                type: 'offer',\n                sdp: offer.sdp\n            };\n            if (self.assumeSetLocalSuccess) {\n                self.emit('offer', expandedOffer);\n                cb(null, expandedOffer);\n            }\n            self._candidateBuffer = [];\n            self.pc.setLocalDescription(offer,\n                function () {\n                    var jingle;\n                    if (self.config.useJingle) {\n                        jingle = SJJ.toSessionJSON(offer.sdp, {\n                            role: self._role(),\n                            direction: 'outgoing'\n                        });\n                        jingle.sid = self.config.sid;\n                        self.localDescription = jingle;\n\n                        // Save ICE credentials\n                        jingle.contents.forEach(function (content) {\n                            var transport = content.transport || {};\n                            if (transport.ufrag) {\n                                self.iceCredentials.local[content.name] = {\n                                    ufrag: transport.ufrag,\n                                    pwd: transport.pwd\n                                };\n                            }\n                        });\n\n                        expandedOffer.jingle = jingle;\n                    }\n                    expandedOffer.sdp.split('\\r\\n').forEach(function (line) {\n                        if (line.indexOf('a=candidate:') === 0) {\n                            self._checkLocalCandidate(line);\n                        }\n                    });\n\n                    if (!self.assumeSetLocalSuccess) {\n                        self.emit('offer', expandedOffer);\n                        cb(null, expandedOffer);\n                    }\n                },\n                function (err) {\n                    self.emit('error', err);\n                    cb(err);\n                }\n            );\n        },\n        function (err) {\n            self.emit('error', err);\n            cb(err);\n        },\n        mediaConstraints\n    );\n};\n\n\n// Process an incoming offer so that ICE may proceed before deciding\n// to answer the request.\nPeerConnection.prototype.handleOffer = function (offer, cb) {\n    cb = cb || function () {};\n    var self = this;\n    offer.type = 'offer';\n    if (offer.jingle) {\n        if (this.enableChromeNativeSimulcast) {\n            offer.jingle.contents.forEach(function (content) {\n                if (content.name === 'video') {\n                    content.application.googConferenceFlag = true;\n                }\n\n            });\n        }\n        if (this.enableMultiStreamHacks) {\n            // add a mixed video stream as first stream\n            offer.jingle.contents.forEach(function (content) {\n                if (content.name === 'video') {\n                    var sources = content.application.sources || [];\n                    if (sources.length === 0 || sources[0].ssrc !== \"3735928559\") {\n                        sources.unshift({\n                            ssrc: \"3735928559\", // 0xdeadbeef\n                            parameters: [\n                                {\n                                    key: \"cname\",\n                                    value: \"deadbeef\"\n                                },\n                                {\n                                    key: \"msid\",\n                                    value: \"mixyourfecintothis please\"\n                                }\n                            ]\n                        });\n                        content.application.sources = sources;\n                    }\n                }\n            });\n        }\n        if (self.restrictBandwidth > 0) {\n            if (offer.jingle.contents.length >= 2 && offer.jingle.contents[1].name === 'video') {\n                var content = offer.jingle.contents[1];\n                var hasBw = content.application && content.application.bandwidth && content.application.bandwidth.bandwidth;\n                if (!hasBw) {\n                    offer.jingle.contents[1].application.bandwidth = { type: 'AS', bandwidth: self.restrictBandwidth.toString() };\n                    offer.sdp = SJJ.toSessionSDP(offer.jingle, {\n                        sid: self.config.sdpSessionID,\n                        role: self._role(),\n                        direction: 'outgoing'\n                    });\n                }\n            }\n        }\n        // Save ICE credentials\n        offer.jingle.contents.forEach(function (content) {\n            var transport = content.transport || {};\n            if (transport.ufrag) {\n                self.iceCredentials.remote[content.name] = {\n                    ufrag: transport.ufrag,\n                    pwd: transport.pwd\n                };\n            }\n        });\n        offer.sdp = SJJ.toSessionSDP(offer.jingle, {\n            sid: self.config.sdpSessionID,\n            role: self._role(),\n            direction: 'incoming'\n        });\n        self.remoteDescription = offer.jingle;\n    }\n    offer.sdp.split('\\r\\n').forEach(function (line) {\n        if (line.indexOf('a=candidate:') === 0) {\n            self._checkRemoteCandidate(line);\n        }\n    });\n    self.pc.setRemoteDescription(new RTCSessionDescription(offer),\n        function () {\n            cb();\n        },\n        cb\n    );\n};\n\n// Answer an offer with audio only\nPeerConnection.prototype.answerAudioOnly = function (cb) {\n    var mediaConstraints = {\n            mandatory: {\n                OfferToReceiveAudio: true,\n                OfferToReceiveVideo: false\n            }\n        };\n    this._answer(mediaConstraints, cb);\n};\n\n// Answer an offer without offering to recieve\nPeerConnection.prototype.answerBroadcastOnly = function (cb) {\n    var mediaConstraints = {\n            mandatory: {\n                OfferToReceiveAudio: false,\n                OfferToReceiveVideo: false\n            }\n        };\n    this._answer(mediaConstraints, cb);\n};\n\n// Answer an offer with given constraints default is audio/video\nPeerConnection.prototype.answer = function (constraints, cb) {\n    var hasConstraints = arguments.length === 2;\n    var callback = hasConstraints ? cb : constraints;\n    var mediaConstraints = hasConstraints && constraints ? constraints : {\n            mandatory: {\n                OfferToReceiveAudio: true,\n                OfferToReceiveVideo: true\n            }\n        };\n\n    this._answer(mediaConstraints, callback);\n};\n\n// Process an answer\nPeerConnection.prototype.handleAnswer = function (answer, cb) {\n    cb = cb || function () {};\n    var self = this;\n    if (answer.jingle) {\n        answer.sdp = SJJ.toSessionSDP(answer.jingle, {\n            sid: self.config.sdpSessionID,\n            role: self._role(),\n            direction: 'incoming'\n        });\n        self.remoteDescription = answer.jingle;\n\n        // Save ICE credentials\n        answer.jingle.contents.forEach(function (content) {\n            var transport = content.transport || {};\n            if (transport.ufrag) {\n                self.iceCredentials.remote[content.name] = {\n                    ufrag: transport.ufrag,\n                    pwd: transport.pwd\n                };\n            }\n        });\n    }\n    answer.sdp.split('\\r\\n').forEach(function (line) {\n        if (line.indexOf('a=candidate:') === 0) {\n            self._checkRemoteCandidate(line);\n        }\n    });\n    self.pc.setRemoteDescription(\n        new RTCSessionDescription(answer),\n        function () {\n            if (self.wtFirefox) {\n                window.setTimeout(function () {\n                    self.firefoxcandidatebuffer.forEach(function (candidate) {\n                        // add candidates later\n                        self.pc.addIceCandidate(\n                            new RTCIceCandidate(candidate),\n                            function () { },\n                            function (err) {\n                                self.emit('error', err);\n                            }\n                        );\n                        self._checkRemoteCandidate(candidate.candidate);\n                    });\n                    self.firefoxcandidatebuffer = null;\n                }, self.wtFirefox);\n            }\n            cb(null);\n        },\n        cb\n    );\n};\n\n// Close the peer connection\nPeerConnection.prototype.close = function () {\n    this.pc.close();\n\n    this._localDataChannels = [];\n    this._remoteDataChannels = [];\n\n    this.emit('close');\n};\n\n// Internal code sharing for various types of answer methods\nPeerConnection.prototype._answer = function (constraints, cb) {\n    cb = cb || function () {};\n    var self = this;\n    if (!this.pc.remoteDescription) {\n        // the old API is used, call handleOffer\n        throw new Error('remoteDescription not set');\n    }\n\n    if (this.pc.signalingState === 'closed') return cb('Already closed');\n\n    self.pc.createAnswer(\n        function (answer) {\n            var sim = [];\n            if (self.enableChromeNativeSimulcast) {\n                // native simulcast part 1: add another SSRC\n                answer.jingle = SJJ.toSessionJSON(answer.sdp, {\n                    role: self._role(),\n                    direction: 'outgoing'\n                });\n                if (answer.jingle.contents.length >= 2 && answer.jingle.contents[1].name === 'video') {\n                    var groups = answer.jingle.contents[1].application.sourceGroups || [];\n                    var hasSim = false;\n                    groups.forEach(function (group) {\n                        if (group.semantics == 'SIM') hasSim = true;\n                    });\n                    if (!hasSim &&\n                        answer.jingle.contents[1].application.sources.length) {\n                        var newssrc = JSON.parse(JSON.stringify(answer.jingle.contents[1].application.sources[0]));\n                        newssrc.ssrc = '' + Math.floor(Math.random() * 0xffffffff); // FIXME: look for conflicts\n                        answer.jingle.contents[1].application.sources.push(newssrc);\n\n                        sim.push(answer.jingle.contents[1].application.sources[0].ssrc);\n                        sim.push(newssrc.ssrc);\n                        groups.push({\n                            semantics: 'SIM',\n                            sources: sim\n                        });\n\n                        // also create an RTX one for the SIM one\n                        var rtxssrc = JSON.parse(JSON.stringify(newssrc));\n                        rtxssrc.ssrc = '' + Math.floor(Math.random() * 0xffffffff); // FIXME: look for conflicts\n                        answer.jingle.contents[1].application.sources.push(rtxssrc);\n                        groups.push({\n                            semantics: 'FID',\n                            sources: [newssrc.ssrc, rtxssrc.ssrc]\n                        });\n\n                        answer.jingle.contents[1].application.sourceGroups = groups;\n                        answer.sdp = SJJ.toSessionSDP(answer.jingle, {\n                            sid: self.config.sdpSessionID,\n                            role: self._role(),\n                            direction: 'outgoing'\n                        });\n                    }\n                }\n            }\n            var expandedAnswer = {\n                type: 'answer',\n                sdp: answer.sdp\n            };\n            if (self.assumeSetLocalSuccess) {\n                // not safe to do when doing simulcast mangling\n                var copy = cloneDeep(expandedAnswer);\n                self.emit('answer', copy);\n                cb(null, copy);\n            }\n            self._candidateBuffer = [];\n            self.pc.setLocalDescription(answer,\n                function () {\n                    if (self.config.useJingle) {\n                        var jingle = SJJ.toSessionJSON(answer.sdp, {\n                            role: self._role(),\n                            direction: 'outgoing'\n                        });\n                        jingle.sid = self.config.sid;\n                        self.localDescription = jingle;\n                        expandedAnswer.jingle = jingle;\n                    }\n                    if (self.enableChromeNativeSimulcast) {\n                        // native simulcast part 2:\n                        // signal multiple tracks to the receiver\n                        // for anything in the SIM group\n                        if (!expandedAnswer.jingle) {\n                            expandedAnswer.jingle = SJJ.toSessionJSON(answer.sdp, {\n                                role: self._role(),\n                                direction: 'outgoing'\n                            });\n                        }\n                        expandedAnswer.jingle.contents[1].application.sources.forEach(function (source, idx) {\n                            // the floor idx/2 is a hack that relies on a particular order\n                            // of groups, alternating between sim and rtx\n                            source.parameters = source.parameters.map(function (parameter) {\n                                if (parameter.key === 'msid') {\n                                    parameter.value += '-' + Math.floor(idx / 2);\n                                }\n                                return parameter;\n                            });\n                        });\n                        expandedAnswer.sdp = SJJ.toSessionSDP(expandedAnswer.jingle, {\n                            sid: self.sdpSessionID,\n                            role: self._role(),\n                            direction: 'outgoing'\n                        });\n                    }\n                    expandedAnswer.sdp.split('\\r\\n').forEach(function (line) {\n                        if (line.indexOf('a=candidate:') === 0) {\n                            self._checkLocalCandidate(line);\n                        }\n                    });\n                    if (!self.assumeSetLocalSuccess) {\n                        var copy = cloneDeep(expandedAnswer);\n                        self.emit('answer', copy);\n                        cb(null, copy);\n                    }\n                },\n                function (err) {\n                    self.emit('error', err);\n                    cb(err);\n                }\n            );\n        },\n        function (err) {\n            self.emit('error', err);\n            cb(err);\n        },\n        constraints\n    );\n};\n\n// Internal method for emitting ice candidates on our peer object\nPeerConnection.prototype._onIce = function (event) {\n    var self = this;\n    if (event.candidate) {\n        if (this.dontSignalCandidates) return;\n        var ice = event.candidate;\n\n        var expandedCandidate = {\n            candidate: {\n                candidate: ice.candidate,\n                sdpMid: ice.sdpMid,\n                sdpMLineIndex: ice.sdpMLineIndex\n            }\n        };\n        this._checkLocalCandidate(ice.candidate);\n\n        var cand = SJJ.toCandidateJSON(ice.candidate);\n\n        var already;\n        var idx;\n        if (this.eliminateDuplicateCandidates && cand.type === 'relay') {\n            // drop candidates with same foundation, component\n            // take local type pref into account so we don't ignore udp\n            // ones when we know about a TCP one. unlikely but...\n            already = this._candidateBuffer.filter(\n                function (c) {\n                    return c.type === 'relay';\n                }).map(function (c) {\n                    return c.foundation + ':' + c.component;\n                }\n            );\n            idx = already.indexOf(cand.foundation + ':' + cand.component);\n            // remember: local type pref of udp is 0, tcp 1, tls 2\n            if (idx > -1 && ((cand.priority >> 24) >= (already[idx].priority >> 24))) {\n                // drop it, same foundation with higher (worse) type pref\n                return;\n            }\n        }\n        if (this.config.bundlePolicy === 'max-bundle') {\n            // drop candidates which are duplicate for audio/video/data\n            // duplicate means same host/port but different sdpMid\n            already = this._candidateBuffer.filter(\n                function (c) {\n                    return cand.type === c.type;\n                }).map(function (cand) {\n                    return cand.address + ':' + cand.port;\n                }\n            );\n            idx = already.indexOf(cand.address + ':' + cand.port);\n            if (idx > -1) return;\n        }\n        // also drop rtcp candidates since we know the peer supports RTCP-MUX\n        // this is a workaround until browsers implement this natively\n        if (this.config.rtcpMuxPolicy === 'require' && cand.component === '2') {\n            return;\n        }\n        this._candidateBuffer.push(cand);\n\n        if (self.config.useJingle) {\n            if (!ice.sdpMid) { // firefox doesn't set this\n                if (self.pc.remoteDescription && self.pc.remoteDescription.type === 'offer') {\n                    // preserve name from remote\n                    ice.sdpMid = self.remoteDescription.contents[ice.sdpMLineIndex].name;\n                } else {\n                    ice.sdpMid = self.localDescription.contents[ice.sdpMLineIndex].name;\n                }\n            }\n            if (!self.iceCredentials.local[ice.sdpMid]) {\n                var jingle = SJJ.toSessionJSON(self.pc.localDescription.sdp, {\n                    role: self._role(),\n                    direction: 'outgoing'\n                });\n                jingle.contents.forEach(function (content) {\n                    var transport = content.transport || {};\n                    if (transport.ufrag) {\n                        self.iceCredentials.local[content.name] = {\n                            ufrag: transport.ufrag,\n                            pwd: transport.pwd\n                        };\n                    }\n                });\n            }\n            expandedCandidate.jingle = {\n                contents: [{\n                    name: ice.sdpMid,\n                    creator: self._role(),\n                    transport: {\n                        transportType: 'iceUdp',\n                        ufrag: self.iceCredentials.local[ice.sdpMid].ufrag,\n                        pwd: self.iceCredentials.local[ice.sdpMid].pwd,\n                        candidates: [\n                            cand\n                        ]\n                    }\n                }]\n            };\n            if (self.batchIceCandidates > 0) {\n                if (self.batchedIceCandidates.length === 0) {\n                    window.setTimeout(function () {\n                        var contents = {};\n                        self.batchedIceCandidates.forEach(function (content) {\n                            content = content.contents[0];\n                            if (!contents[content.name]) contents[content.name] = content;\n                            contents[content.name].transport.candidates.push(content.transport.candidates[0]);\n                        });\n                        var newCand = {\n                            jingle: {\n                                contents: []\n                            }\n                        };\n                        Object.keys(contents).forEach(function (name) {\n                            newCand.jingle.contents.push(contents[name]);\n                        });\n                        self.batchedIceCandidates = [];\n                        self.emit('ice', newCand);\n                    }, self.batchIceCandidates);\n                }\n                self.batchedIceCandidates.push(expandedCandidate.jingle);\n                return;\n            }\n\n        }\n        this.emit('ice', expandedCandidate);\n    } else {\n        this.emit('endOfCandidates');\n    }\n};\n\n// Internal method for processing a new data channel being added by the\n// other peer.\nPeerConnection.prototype._onDataChannel = function (event) {\n    // make sure we keep a reference so this doesn't get garbage collected\n    var channel = event.channel;\n    this._remoteDataChannels.push(channel);\n\n    this.emit('addChannel', channel);\n};\n\n// Create a data channel spec reference:\n// http://dev.w3.org/2011/webrtc/editor/webrtc.html#idl-def-RTCDataChannelInit\nPeerConnection.prototype.createDataChannel = function (name, opts) {\n    var channel = this.pc.createDataChannel(name, opts);\n\n    // make sure we keep a reference so this doesn't get garbage collected\n    this._localDataChannels.push(channel);\n\n    return channel;\n};\n\nPeerConnection.prototype.getStats = function (cb) {\n    this.pc.getStats(null,\n        function (res) {\n            cb(null, res);\n        },\n        function (err) {\n            cb(err);\n        }\n    );\n};\n\nmodule.exports = PeerConnection;\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"471.js","sources":["/home/ubuntu/workspace/node_modules/rtcpeerconnection/rtcpeerconnection.js"],"sourcesContent":["var util = require('util');\nvar SJJ = require('sdp-jingle-json');\nvar WildEmitter = require('wildemitter');\nvar Peerconn = require('traceablepeerconnection');\nvar adapter = require('webrtc-adapter');\nvar cloneDeep = require('lodash.clonedeep');\n\nfunction PeerConnection(config, constraints) {\n    var self = this;\n    var item;\n    WildEmitter.call(this);\n\n    config = config || {};\n    config.iceServers = config.iceServers || [];\n\n    var detectedBrowser = adapter.browserDetails.browser;\n\n    // make sure this only gets enabled in Google Chrome\n    // EXPERIMENTAL FLAG, might get removed without notice\n    this.enableChromeNativeSimulcast = false;\n    if (constraints && constraints.optional &&\n            detectedBrowser === 'chrome' &&\n            navigator.appVersion.match(/Chromium\\//) === null) {\n        constraints.optional.forEach(function (constraint) {\n            if (constraint.enableChromeNativeSimulcast) {\n                self.enableChromeNativeSimulcast = true;\n            }\n        });\n    }\n\n    // EXPERIMENTAL FLAG, might get removed without notice\n    this.enableMultiStreamHacks = false;\n    if (constraints && constraints.optional &&\n            detectedBrowser === 'chrome') {\n        constraints.optional.forEach(function (constraint) {\n            if (constraint.enableMultiStreamHacks) {\n                self.enableMultiStreamHacks = true;\n            }\n        });\n    }\n    // EXPERIMENTAL FLAG, might get removed without notice\n    this.restrictBandwidth = 0;\n    if (constraints && constraints.optional) {\n        constraints.optional.forEach(function (constraint) {\n            if (constraint.andyetRestrictBandwidth) {\n                self.restrictBandwidth = constraint.andyetRestrictBandwidth;\n            }\n        });\n    }\n\n    // EXPERIMENTAL FLAG, might get removed without notice\n    // bundle up ice candidates, only works for jingle mode\n    // number > 0 is the delay to wait for additional candidates\n    // ~20ms seems good\n    this.batchIceCandidates = 0;\n    if (constraints && constraints.optional) {\n        constraints.optional.forEach(function (constraint) {\n            if (constraint.andyetBatchIce) {\n                self.batchIceCandidates = constraint.andyetBatchIce;\n            }\n        });\n    }\n    this.batchedIceCandidates = [];\n\n    // EXPERIMENTAL FLAG, might get removed without notice\n    // this attemps to strip out candidates with an already known foundation\n    // and type -- i.e. those which are gathered via the same TURN server\n    // but different transports (TURN udp, tcp and tls respectively)\n    if (constraints && constraints.optional && detectedBrowser === 'chrome') {\n        constraints.optional.forEach(function (constraint) {\n            if (constraint.andyetFasterICE) {\n                self.eliminateDuplicateCandidates = constraint.andyetFasterICE;\n            }\n        });\n    }\n    // EXPERIMENTAL FLAG, might get removed without notice\n    // when using a server such as the jitsi videobridge we don't need to signal\n    // our candidates\n    if (constraints && constraints.optional) {\n        constraints.optional.forEach(function (constraint) {\n            if (constraint.andyetDontSignalCandidates) {\n                self.dontSignalCandidates = constraint.andyetDontSignalCandidates;\n            }\n        });\n    }\n\n\n    // EXPERIMENTAL FLAG, might get removed without notice\n    this.assumeSetLocalSuccess = false;\n    if (constraints && constraints.optional) {\n        constraints.optional.forEach(function (constraint) {\n            if (constraint.andyetAssumeSetLocalSuccess) {\n                self.assumeSetLocalSuccess = constraint.andyetAssumeSetLocalSuccess;\n            }\n        });\n    }\n\n    // EXPERIMENTAL FLAG, might get removed without notice\n    // working around https://bugzilla.mozilla.org/show_bug.cgi?id=1087551\n    // pass in a timeout for this\n    if (detectedBrowser === 'firefox') {\n        if (constraints && constraints.optional) {\n            this.wtFirefox = 0;\n            constraints.optional.forEach(function (constraint) {\n                if (constraint.andyetFirefoxMakesMeSad) {\n                    self.wtFirefox = constraint.andyetFirefoxMakesMeSad;\n                    if (self.wtFirefox > 0) {\n                        self.firefoxcandidatebuffer = [];\n                    }\n                }\n            });\n        }\n    }\n\n\n    this.pc = new Peerconn(config, constraints);\n\n    this.getLocalStreams = this.pc.getLocalStreams.bind(this.pc);\n    this.getRemoteStreams = this.pc.getRemoteStreams.bind(this.pc);\n    this.addStream = this.pc.addStream.bind(this.pc);\n    this.removeStream = this.pc.removeStream.bind(this.pc);\n\n    // proxy events\n    this.pc.on('*', function () {\n        self.emit.apply(self, arguments);\n    });\n\n    // proxy some events directly\n    this.pc.onremovestream = this.emit.bind(this, 'removeStream');\n    this.pc.onaddstream = this.emit.bind(this, 'addStream');\n    this.pc.onnegotiationneeded = this.emit.bind(this, 'negotiationNeeded');\n    this.pc.oniceconnectionstatechange = this.emit.bind(this, 'iceConnectionStateChange');\n    this.pc.onsignalingstatechange = this.emit.bind(this, 'signalingStateChange');\n\n    // handle ice candidate and data channel events\n    this.pc.onicecandidate = this._onIce.bind(this);\n    this.pc.ondatachannel = this._onDataChannel.bind(this);\n\n    this.localDescription = {\n        contents: []\n    };\n    this.remoteDescription = {\n        contents: []\n    };\n\n    this.config = {\n        debug: false,\n        sid: '',\n        isInitiator: true,\n        sdpSessionID: Date.now(),\n        useJingle: false\n    };\n\n    this.iceCredentials = {\n        local: {},\n        remote: {}\n    };\n\n    // apply our config\n    for (item in config) {\n        this.config[item] = config[item];\n    }\n\n    if (this.config.debug) {\n        this.on('*', function () {\n            var logger = config.logger || console;\n            logger.log('PeerConnection event:', arguments);\n        });\n    }\n    this.hadLocalStunCandidate = false;\n    this.hadRemoteStunCandidate = false;\n    this.hadLocalRelayCandidate = false;\n    this.hadRemoteRelayCandidate = false;\n\n    this.hadLocalIPv6Candidate = false;\n    this.hadRemoteIPv6Candidate = false;\n\n    // keeping references for all our data channels\n    // so they dont get garbage collected\n    // can be removed once the following bugs have been fixed\n    // https://crbug.com/405545\n    // https://bugzilla.mozilla.org/show_bug.cgi?id=964092\n    // to be filed for opera\n    this._remoteDataChannels = [];\n    this._localDataChannels = [];\n\n    this._candidateBuffer = [];\n}\n\nutil.inherits(PeerConnection, WildEmitter);\n\nObject.defineProperty(PeerConnection.prototype, 'signalingState', {\n    get: function () {\n        return this.pc.signalingState;\n    }\n});\nObject.defineProperty(PeerConnection.prototype, 'iceConnectionState', {\n    get: function () {\n        return this.pc.iceConnectionState;\n    }\n});\n\nPeerConnection.prototype._role = function () {\n    return this.isInitiator ? 'initiator' : 'responder';\n};\n\n// Add a stream to the peer connection object\nPeerConnection.prototype.addStream = function (stream) {\n    this.localStream = stream;\n    this.pc.addStream(stream);\n};\n\n// helper function to check if a remote candidate is a stun/relay\n// candidate or an ipv6 candidate\nPeerConnection.prototype._checkLocalCandidate = function (candidate) {\n    var cand = SJJ.toCandidateJSON(candidate);\n    if (cand.type == 'srflx') {\n        this.hadLocalStunCandidate = true;\n    } else if (cand.type == 'relay') {\n        this.hadLocalRelayCandidate = true;\n    }\n    if (cand.ip.indexOf(':') != -1) {\n        this.hadLocalIPv6Candidate = true;\n    }\n};\n\n// helper function to check if a remote candidate is a stun/relay\n// candidate or an ipv6 candidate\nPeerConnection.prototype._checkRemoteCandidate = function (candidate) {\n    var cand = SJJ.toCandidateJSON(candidate);\n    if (cand.type == 'srflx') {\n        this.hadRemoteStunCandidate = true;\n    } else if (cand.type == 'relay') {\n        this.hadRemoteRelayCandidate = true;\n    }\n    if (cand.ip.indexOf(':') != -1) {\n        this.hadRemoteIPv6Candidate = true;\n    }\n};\n\n\n// Init and add ice candidate object with correct constructor\nPeerConnection.prototype.processIce = function (update, cb) {\n    cb = cb || function () {};\n    var self = this;\n\n    // ignore any added ice candidates to avoid errors. why does the\n    // spec not do this?\n    if (this.pc.signalingState === 'closed') return cb();\n\n    if (update.contents || (update.jingle && update.jingle.contents)) {\n        var contentNames = this.remoteDescription.contents.map(function (c) { return c.name; });\n        var contents = update.contents || update.jingle.contents;\n\n        contents.forEach(function (content) {\n            var transport = content.transport || {};\n            var candidates = transport.candidates || [];\n            var mline = contentNames.indexOf(content.name);\n            var mid = content.name;\n            var remoteContent = self.remoteDescription.contents.find(function (c) {\n                return c.name === content.name;\n            });\n\n            // process candidates as a callback, in case we need to\n            // update ufrag and pwd with offer/answer\n            var processCandidates = function () {\n                candidates.forEach(\n                    function (candidate) {\n                    var iceCandidate = SJJ.toCandidateSDP(candidate) + '\\r\\n';\n                    self.pc.addIceCandidate(\n                        new RTCIceCandidate({\n                            candidate: iceCandidate,\n                            sdpMLineIndex: mline,\n                            sdpMid: mid\n                        }), function () {\n                            // well, this success callback is pretty meaningless\n                        },\n                        function (err) {\n                            self.emit('error', err);\n                        }\n                    );\n                    self._checkRemoteCandidate(iceCandidate);\n                });\n                cb();\n            };\n\n            if (self.iceCredentials.remote[content.name] && transport.ufrag &&\n                self.iceCredentials.remote[content.name].ufrag !== transport.ufrag) {\n                if (remoteContent) {\n                    remoteContent.transport.ufrag = transport.ufrag;\n                    remoteContent.transport.pwd = transport.pwd;\n                    var offer = {\n                        type: 'offer',\n                        jingle: self.remoteDescription\n                    };\n                    offer.sdp = SJJ.toSessionSDP(offer.jingle, {\n                        sid: self.config.sdpSessionID,\n                        role: self._role(),\n                        direction: 'incoming'\n                    });\n                    self.pc.setRemoteDescription(new RTCSessionDescription(offer),\n                        function () {\n                            processCandidates();\n                        },\n                        function (err) {\n                            self.emit('error', err);\n                        }\n                    );\n                } else {\n                    self.emit('error', 'ice restart failed to find matching content');\n                }\n            } else {\n                processCandidates();\n            }\n        });\n    } else {\n        // working around https://code.google.com/p/webrtc/issues/detail?id=3669\n        if (update.candidate && update.candidate.candidate.indexOf('a=') !== 0) {\n            update.candidate.candidate = 'a=' + update.candidate.candidate;\n        }\n\n        if (this.wtFirefox && this.firefoxcandidatebuffer !== null) {\n            // we cant add this yet due to https://bugzilla.mozilla.org/show_bug.cgi?id=1087551\n            if (this.pc.localDescription && this.pc.localDescription.type === 'offer') {\n                this.firefoxcandidatebuffer.push(update.candidate);\n                return cb();\n            }\n        }\n\n        self.pc.addIceCandidate(\n            new RTCIceCandidate(update.candidate),\n            function () { },\n            function (err) {\n                self.emit('error', err);\n            }\n        );\n        self._checkRemoteCandidate(update.candidate.candidate);\n        cb();\n    }\n};\n\n// Generate and emit an offer with the given constraints\nPeerConnection.prototype.offer = function (constraints, cb) {\n    var self = this;\n    var hasConstraints = arguments.length === 2;\n    var mediaConstraints = hasConstraints && constraints ? constraints : {\n            offerToReceiveAudio: 1,\n            offerToReceiveVideo: 1\n        };\n    cb = hasConstraints ? cb : constraints;\n    cb = cb || function () {};\n\n    if (this.pc.signalingState === 'closed') return cb('Already closed');\n\n    // Actually generate the offer\n    this.pc.createOffer(\n        function (offer) {\n            // does not work for jingle, but jingle.js doesn't need\n            // this hack...\n            var expandedOffer = {\n                type: 'offer',\n                sdp: offer.sdp\n            };\n            if (self.assumeSetLocalSuccess) {\n                self.emit('offer', expandedOffer);\n                cb(null, expandedOffer);\n            }\n            self._candidateBuffer = [];\n            self.pc.setLocalDescription(offer,\n                function () {\n                    var jingle;\n                    if (self.config.useJingle) {\n                        jingle = SJJ.toSessionJSON(offer.sdp, {\n                            role: self._role(),\n                            direction: 'outgoing'\n                        });\n                        jingle.sid = self.config.sid;\n                        self.localDescription = jingle;\n\n                        // Save ICE credentials\n                        jingle.contents.forEach(function (content) {\n                            var transport = content.transport || {};\n                            if (transport.ufrag) {\n                                self.iceCredentials.local[content.name] = {\n                                    ufrag: transport.ufrag,\n                                    pwd: transport.pwd\n                                };\n                            }\n                        });\n\n                        expandedOffer.jingle = jingle;\n                    }\n                    expandedOffer.sdp.split('\\r\\n').forEach(function (line) {\n                        if (line.indexOf('a=candidate:') === 0) {\n                            self._checkLocalCandidate(line);\n                        }\n                    });\n\n                    if (!self.assumeSetLocalSuccess) {\n                        self.emit('offer', expandedOffer);\n                        cb(null, expandedOffer);\n                    }\n                },\n                function (err) {\n                    self.emit('error', err);\n                    cb(err);\n                }\n            );\n        },\n        function (err) {\n            self.emit('error', err);\n            cb(err);\n        },\n        mediaConstraints\n    );\n};\n\n\n// Process an incoming offer so that ICE may proceed before deciding\n// to answer the request.\nPeerConnection.prototype.handleOffer = function (offer, cb) {\n    cb = cb || function () {};\n    var self = this;\n    offer.type = 'offer';\n    if (offer.jingle) {\n        if (this.enableChromeNativeSimulcast) {\n            offer.jingle.contents.forEach(function (content) {\n                if (content.name === 'video') {\n                    content.application.googConferenceFlag = true;\n                }\n\n            });\n        }\n        if (this.enableMultiStreamHacks) {\n            // add a mixed video stream as first stream\n            offer.jingle.contents.forEach(function (content) {\n                if (content.name === 'video') {\n                    var sources = content.application.sources || [];\n                    if (sources.length === 0 || sources[0].ssrc !== \"3735928559\") {\n                        sources.unshift({\n                            ssrc: \"3735928559\", // 0xdeadbeef\n                            parameters: [\n                                {\n                                    key: \"cname\",\n                                    value: \"deadbeef\"\n                                },\n                                {\n                                    key: \"msid\",\n                                    value: \"mixyourfecintothis please\"\n                                }\n                            ]\n                        });\n                        content.application.sources = sources;\n                    }\n                }\n            });\n        }\n        if (self.restrictBandwidth > 0) {\n            if (offer.jingle.contents.length >= 2 && offer.jingle.contents[1].name === 'video') {\n                var content = offer.jingle.contents[1];\n                var hasBw = content.application && content.application.bandwidth && content.application.bandwidth.bandwidth;\n                if (!hasBw) {\n                    offer.jingle.contents[1].application.bandwidth = { type: 'AS', bandwidth: self.restrictBandwidth.toString() };\n                    offer.sdp = SJJ.toSessionSDP(offer.jingle, {\n                        sid: self.config.sdpSessionID,\n                        role: self._role(),\n                        direction: 'outgoing'\n                    });\n                }\n            }\n        }\n        // Save ICE credentials\n        offer.jingle.contents.forEach(function (content) {\n            var transport = content.transport || {};\n            if (transport.ufrag) {\n                self.iceCredentials.remote[content.name] = {\n                    ufrag: transport.ufrag,\n                    pwd: transport.pwd\n                };\n            }\n        });\n        offer.sdp = SJJ.toSessionSDP(offer.jingle, {\n            sid: self.config.sdpSessionID,\n            role: self._role(),\n            direction: 'incoming'\n        });\n        self.remoteDescription = offer.jingle;\n    }\n    offer.sdp.split('\\r\\n').forEach(function (line) {\n        if (line.indexOf('a=candidate:') === 0) {\n            self._checkRemoteCandidate(line);\n        }\n    });\n    self.pc.setRemoteDescription(new RTCSessionDescription(offer),\n        function () {\n            cb();\n        },\n        cb\n    );\n};\n\n// Answer an offer with audio only\nPeerConnection.prototype.answerAudioOnly = function (cb) {\n    var mediaConstraints = {\n            mandatory: {\n                OfferToReceiveAudio: true,\n                OfferToReceiveVideo: false\n            }\n        };\n    this._answer(mediaConstraints, cb);\n};\n\n// Answer an offer without offering to recieve\nPeerConnection.prototype.answerBroadcastOnly = function (cb) {\n    var mediaConstraints = {\n            mandatory: {\n                OfferToReceiveAudio: false,\n                OfferToReceiveVideo: false\n            }\n        };\n    this._answer(mediaConstraints, cb);\n};\n\n// Answer an offer with given constraints default is audio/video\nPeerConnection.prototype.answer = function (constraints, cb) {\n    var hasConstraints = arguments.length === 2;\n    var callback = hasConstraints ? cb : constraints;\n    var mediaConstraints = hasConstraints && constraints ? constraints : {\n            mandatory: {\n                OfferToReceiveAudio: true,\n                OfferToReceiveVideo: true\n            }\n        };\n\n    this._answer(mediaConstraints, callback);\n};\n\n// Process an answer\nPeerConnection.prototype.handleAnswer = function (answer, cb) {\n    cb = cb || function () {};\n    var self = this;\n    if (answer.jingle) {\n        answer.sdp = SJJ.toSessionSDP(answer.jingle, {\n            sid: self.config.sdpSessionID,\n            role: self._role(),\n            direction: 'incoming'\n        });\n        self.remoteDescription = answer.jingle;\n\n        // Save ICE credentials\n        answer.jingle.contents.forEach(function (content) {\n            var transport = content.transport || {};\n            if (transport.ufrag) {\n                self.iceCredentials.remote[content.name] = {\n                    ufrag: transport.ufrag,\n                    pwd: transport.pwd\n                };\n            }\n        });\n    }\n    answer.sdp.split('\\r\\n').forEach(function (line) {\n        if (line.indexOf('a=candidate:') === 0) {\n            self._checkRemoteCandidate(line);\n        }\n    });\n    self.pc.setRemoteDescription(\n        new RTCSessionDescription(answer),\n        function () {\n            if (self.wtFirefox) {\n                window.setTimeout(function () {\n                    self.firefoxcandidatebuffer.forEach(function (candidate) {\n                        // add candidates later\n                        self.pc.addIceCandidate(\n                            new RTCIceCandidate(candidate),\n                            function () { },\n                            function (err) {\n                                self.emit('error', err);\n                            }\n                        );\n                        self._checkRemoteCandidate(candidate.candidate);\n                    });\n                    self.firefoxcandidatebuffer = null;\n                }, self.wtFirefox);\n            }\n            cb(null);\n        },\n        cb\n    );\n};\n\n// Close the peer connection\nPeerConnection.prototype.close = function () {\n    this.pc.close();\n\n    this._localDataChannels = [];\n    this._remoteDataChannels = [];\n\n    this.emit('close');\n};\n\n// Internal code sharing for various types of answer methods\nPeerConnection.prototype._answer = function (constraints, cb) {\n    cb = cb || function () {};\n    var self = this;\n    if (!this.pc.remoteDescription) {\n        // the old API is used, call handleOffer\n        throw new Error('remoteDescription not set');\n    }\n\n    if (this.pc.signalingState === 'closed') return cb('Already closed');\n\n    self.pc.createAnswer(\n        function (answer) {\n            var sim = [];\n            if (self.enableChromeNativeSimulcast) {\n                // native simulcast part 1: add another SSRC\n                answer.jingle = SJJ.toSessionJSON(answer.sdp, {\n                    role: self._role(),\n                    direction: 'outgoing'\n                });\n                if (answer.jingle.contents.length >= 2 && answer.jingle.contents[1].name === 'video') {\n                    var groups = answer.jingle.contents[1].application.sourceGroups || [];\n                    var hasSim = false;\n                    groups.forEach(function (group) {\n                        if (group.semantics == 'SIM') hasSim = true;\n                    });\n                    if (!hasSim &&\n                        answer.jingle.contents[1].application.sources.length) {\n                        var newssrc = JSON.parse(JSON.stringify(answer.jingle.contents[1].application.sources[0]));\n                        newssrc.ssrc = '' + Math.floor(Math.random() * 0xffffffff); // FIXME: look for conflicts\n                        answer.jingle.contents[1].application.sources.push(newssrc);\n\n                        sim.push(answer.jingle.contents[1].application.sources[0].ssrc);\n                        sim.push(newssrc.ssrc);\n                        groups.push({\n                            semantics: 'SIM',\n                            sources: sim\n                        });\n\n                        // also create an RTX one for the SIM one\n                        var rtxssrc = JSON.parse(JSON.stringify(newssrc));\n                        rtxssrc.ssrc = '' + Math.floor(Math.random() * 0xffffffff); // FIXME: look for conflicts\n                        answer.jingle.contents[1].application.sources.push(rtxssrc);\n                        groups.push({\n                            semantics: 'FID',\n                            sources: [newssrc.ssrc, rtxssrc.ssrc]\n                        });\n\n                        answer.jingle.contents[1].application.sourceGroups = groups;\n                        answer.sdp = SJJ.toSessionSDP(answer.jingle, {\n                            sid: self.config.sdpSessionID,\n                            role: self._role(),\n                            direction: 'outgoing'\n                        });\n                    }\n                }\n            }\n            var expandedAnswer = {\n                type: 'answer',\n                sdp: answer.sdp\n            };\n            if (self.assumeSetLocalSuccess) {\n                // not safe to do when doing simulcast mangling\n                var copy = cloneDeep(expandedAnswer);\n                self.emit('answer', copy);\n                cb(null, copy);\n            }\n            self._candidateBuffer = [];\n            self.pc.setLocalDescription(answer,\n                function () {\n                    if (self.config.useJingle) {\n                        var jingle = SJJ.toSessionJSON(answer.sdp, {\n                            role: self._role(),\n                            direction: 'outgoing'\n                        });\n                        jingle.sid = self.config.sid;\n                        self.localDescription = jingle;\n                        expandedAnswer.jingle = jingle;\n                    }\n                    if (self.enableChromeNativeSimulcast) {\n                        // native simulcast part 2:\n                        // signal multiple tracks to the receiver\n                        // for anything in the SIM group\n                        if (!expandedAnswer.jingle) {\n                            expandedAnswer.jingle = SJJ.toSessionJSON(answer.sdp, {\n                                role: self._role(),\n                                direction: 'outgoing'\n                            });\n                        }\n                        expandedAnswer.jingle.contents[1].application.sources.forEach(function (source, idx) {\n                            // the floor idx/2 is a hack that relies on a particular order\n                            // of groups, alternating between sim and rtx\n                            source.parameters = source.parameters.map(function (parameter) {\n                                if (parameter.key === 'msid') {\n                                    parameter.value += '-' + Math.floor(idx / 2);\n                                }\n                                return parameter;\n                            });\n                        });\n                        expandedAnswer.sdp = SJJ.toSessionSDP(expandedAnswer.jingle, {\n                            sid: self.sdpSessionID,\n                            role: self._role(),\n                            direction: 'outgoing'\n                        });\n                    }\n                    expandedAnswer.sdp.split('\\r\\n').forEach(function (line) {\n                        if (line.indexOf('a=candidate:') === 0) {\n                            self._checkLocalCandidate(line);\n                        }\n                    });\n                    if (!self.assumeSetLocalSuccess) {\n                        var copy = cloneDeep(expandedAnswer);\n                        self.emit('answer', copy);\n                        cb(null, copy);\n                    }\n                },\n                function (err) {\n                    self.emit('error', err);\n                    cb(err);\n                }\n            );\n        },\n        function (err) {\n            self.emit('error', err);\n            cb(err);\n        },\n        constraints\n    );\n};\n\n// Internal method for emitting ice candidates on our peer object\nPeerConnection.prototype._onIce = function (event) {\n    var self = this;\n    if (event.candidate) {\n        if (this.dontSignalCandidates) return;\n        var ice = event.candidate;\n\n        var expandedCandidate = {\n            candidate: {\n                candidate: ice.candidate,\n                sdpMid: ice.sdpMid,\n                sdpMLineIndex: ice.sdpMLineIndex\n            }\n        };\n        this._checkLocalCandidate(ice.candidate);\n\n        var cand = SJJ.toCandidateJSON(ice.candidate);\n\n        var already;\n        var idx;\n        if (this.eliminateDuplicateCandidates && cand.type === 'relay') {\n            // drop candidates with same foundation, component\n            // take local type pref into account so we don't ignore udp\n            // ones when we know about a TCP one. unlikely but...\n            already = this._candidateBuffer.filter(\n                function (c) {\n                    return c.type === 'relay';\n                }).map(function (c) {\n                    return c.foundation + ':' + c.component;\n                }\n            );\n            idx = already.indexOf(cand.foundation + ':' + cand.component);\n            // remember: local type pref of udp is 0, tcp 1, tls 2\n            if (idx > -1 && ((cand.priority >> 24) >= (already[idx].priority >> 24))) {\n                // drop it, same foundation with higher (worse) type pref\n                return;\n            }\n        }\n        if (this.config.bundlePolicy === 'max-bundle') {\n            // drop candidates which are duplicate for audio/video/data\n            // duplicate means same host/port but different sdpMid\n            already = this._candidateBuffer.filter(\n                function (c) {\n                    return cand.type === c.type;\n                }).map(function (cand) {\n                    return cand.address + ':' + cand.port;\n                }\n            );\n            idx = already.indexOf(cand.address + ':' + cand.port);\n            if (idx > -1) return;\n        }\n        // also drop rtcp candidates since we know the peer supports RTCP-MUX\n        // this is a workaround until browsers implement this natively\n        if (this.config.rtcpMuxPolicy === 'require' && cand.component === '2') {\n            return;\n        }\n        this._candidateBuffer.push(cand);\n\n        if (self.config.useJingle) {\n            if (!ice.sdpMid) { // firefox doesn't set this\n                if (self.pc.remoteDescription && self.pc.remoteDescription.type === 'offer') {\n                    // preserve name from remote\n                    ice.sdpMid = self.remoteDescription.contents[ice.sdpMLineIndex].name;\n                } else {\n                    ice.sdpMid = self.localDescription.contents[ice.sdpMLineIndex].name;\n                }\n            }\n            if (!self.iceCredentials.local[ice.sdpMid]) {\n                var jingle = SJJ.toSessionJSON(self.pc.localDescription.sdp, {\n                    role: self._role(),\n                    direction: 'outgoing'\n                });\n                jingle.contents.forEach(function (content) {\n                    var transport = content.transport || {};\n                    if (transport.ufrag) {\n                        self.iceCredentials.local[content.name] = {\n                            ufrag: transport.ufrag,\n                            pwd: transport.pwd\n                        };\n                    }\n                });\n            }\n            expandedCandidate.jingle = {\n                contents: [{\n                    name: ice.sdpMid,\n                    creator: self._role(),\n                    transport: {\n                        transportType: 'iceUdp',\n                        ufrag: self.iceCredentials.local[ice.sdpMid].ufrag,\n                        pwd: self.iceCredentials.local[ice.sdpMid].pwd,\n                        candidates: [\n                            cand\n                        ]\n                    }\n                }]\n            };\n            if (self.batchIceCandidates > 0) {\n                if (self.batchedIceCandidates.length === 0) {\n                    window.setTimeout(function () {\n                        var contents = {};\n                        self.batchedIceCandidates.forEach(function (content) {\n                            content = content.contents[0];\n                            if (!contents[content.name]) contents[content.name] = content;\n                            contents[content.name].transport.candidates.push(content.transport.candidates[0]);\n                        });\n                        var newCand = {\n                            jingle: {\n                                contents: []\n                            }\n                        };\n                        Object.keys(contents).forEach(function (name) {\n                            newCand.jingle.contents.push(contents[name]);\n                        });\n                        self.batchedIceCandidates = [];\n                        self.emit('ice', newCand);\n                    }, self.batchIceCandidates);\n                }\n                self.batchedIceCandidates.push(expandedCandidate.jingle);\n                return;\n            }\n\n        }\n        this.emit('ice', expandedCandidate);\n    } else {\n        this.emit('endOfCandidates');\n    }\n};\n\n// Internal method for processing a new data channel being added by the\n// other peer.\nPeerConnection.prototype._onDataChannel = function (event) {\n    // make sure we keep a reference so this doesn't get garbage collected\n    var channel = event.channel;\n    this._remoteDataChannels.push(channel);\n\n    this.emit('addChannel', channel);\n};\n\n// Create a data channel spec reference:\n// 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Severity: Minor
Found in app/assets/javascripts/metamaps.secret.bundle.js by fixme

TODO found
Open

    eval("'use strict';Object.defineProperty(exports, \"__esModule\", { value: true });var _values2 = __webpack_require__(151);var _values3 = _interopRequireDefault(_values2);var _get2 = __webpack_require__(118);var _get3 = _interopRequireDefault(_get2);var _each2 = __webpack_require__(137);var _each3 = _interopRequireDefault(_each2);var _find2 = __webpack_require__(28);var _find3 = _interopRequireDefault(_find2);var _templateObject = _taggedTemplateLiteral(['\\n        <ul>\\n          <li class=\"changeP toCommons\"><div class=\"rc-perm-icon\"></div>commons</li>\\n          <li class=\"changeP toPublic\"><div class=\"rc-perm-icon\"></div>public</li>\\n          <li class=\"changeP toPrivate\"><div class=\"rc-perm-icon\"></div>private</li>\\n        </ul>'], ['\\n        <ul>\\n          <li class=\"changeP toCommons\"><div class=\"rc-perm-icon\"></div>commons</li>\\n          <li class=\"changeP toPublic\"><div class=\"rc-perm-icon\"></div>public</li>\\n          <li class=\"changeP toPrivate\"><div class=\"rc-perm-icon\"></div>private</li>\\n        </ul>']),_templateObject2 = _taggedTemplateLiteral(['\\n        <li class=\"rc-permission\">\\n          <div class=\"rc-icon\"></div>\\n          Change permissions\\n          ', '\\n          <div class=\"expandLi\"></div>\\n        </li>'], ['\\n        <li class=\"rc-permission\">\\n          <div class=\"rc-icon\"></div>\\n          Change permissions\\n          ', '\\n          <div class=\"expandLi\"></div>\\n        </li>']),_templateObject3 = _taggedTemplateLiteral(['\\n        <ul id=\"fetchSiblingList\">\\n          <li class=\"fetchAll\">All<div class=\"rc-keyboard\">Alt+R</div></li>\\n          <li id=\"loadingSiblings\"></li>\\n        </ul>'], ['\\n        <ul id=\"fetchSiblingList\">\\n          <li class=\"fetchAll\">All<div class=\"rc-keyboard\">Alt+R</div></li>\\n          <li id=\"loadingSiblings\"></li>\\n        </ul>']),_templateObject4 = _taggedTemplateLiteral(['\\n        <ul>\\n          <li class=\"changeP toCommons\"><div class=\"rc-perm-icon\"></div>commons</li>\\n          <li class=\"changeP toPublic\"><div class=\"rc-perm-icon\"></div>public</li>           <li class=\"changeP toPrivate\"><div class=\"rc-perm-icon\"></div>private</li>         </ul>'], ['\\n        <ul>\\n          <li class=\"changeP toCommons\"><div class=\"rc-perm-icon\"></div>commons</li>\\n          <li class=\"changeP toPublic\"><div class=\"rc-perm-icon\"></div>public</li>           <li class=\"changeP toPrivate\"><div class=\"rc-perm-icon\"></div>private</li>         </ul>']);\n\n\nvar _outdent = __webpack_require__(148);var _outdent2 = _interopRequireDefault(_outdent);\n\nvar _JIT = __webpack_require__(170);var _JIT2 = _interopRequireDefault(_JIT);\n\nvar _Active = __webpack_require__(6);var _Active2 = _interopRequireDefault(_Active);\nvar _Control = __webpack_require__(27);var _Control2 = _interopRequireDefault(_Control);\nvar _Create = __webpack_require__(173);var _Create2 = _interopRequireDefault(_Create);\nvar _DataModel = __webpack_require__(149);var _DataModel2 = _interopRequireDefault(_DataModel);\nvar _Engine = __webpack_require__(150);var _Engine2 = _interopRequireDefault(_Engine);\nvar _Filter = __webpack_require__(356);var _Filter2 = _interopRequireDefault(_Filter);\nvar _GlobalUI = __webpack_require__(362);var _GlobalUI2 = _interopRequireDefault(_GlobalUI);\nvar _Map = __webpack_require__(369);var _Map2 = _interopRequireDefault(_Map);\nvar _Mouse = __webpack_require__(352);var _Mouse2 = _interopRequireDefault(_Mouse);\nvar _Selected = __webpack_require__(353);var _Selected2 = _interopRequireDefault(_Selected);\nvar _Settings = __webpack_require__(572);var _Settings2 = _interopRequireDefault(_Settings);\nvar _Synapse = __webpack_require__(354);var _Synapse2 = _interopRequireDefault(_Synapse);\nvar _SynapseCard = __webpack_require__(569);var _SynapseCard2 = _interopRequireDefault(_SynapseCard);\nvar _Topic = __webpack_require__(571);var _Topic2 = _interopRequireDefault(_Topic);\nvar _TopicCard = __webpack_require__(566);var _TopicCard2 = _interopRequireDefault(_TopicCard);\nvar _Util = __webpack_require__(410);var _Util2 = _interopRequireDefault(_Util);\nvar _Visualize = __webpack_require__(561);var _Visualize2 = _interopRequireDefault(_Visualize);\nvar _clipboardJs = __webpack_require__(363);var _clipboardJs2 = _interopRequireDefault(_clipboardJs);function _interopRequireDefault(obj) {return obj && obj.__esModule ? obj : { default: obj };}function _taggedTemplateLiteral(strings, raw) {return Object.freeze(Object.defineProperties(strings, { raw: { value: Object.freeze(raw) } }));} /* global $, Image, CanvasLoader */\n\nvar panningInt = void 0;\n\nvar JIT = {\n  tempInit: false,\n  tempNode: null,\n  tempNode2: null,\n  mouseDownPix: {},\n  dragFlag: 0,\n  dragTolerance: 0,\n  virtualPointer: {},\n\n  events: {\n    topicDrag: 'Metamaps:JIT:events:topicDrag',\n    pan: 'Metamaps:JIT:events:pan',\n    zoom: 'Metamaps:JIT:events:zoom',\n    animationDone: 'Metamaps:JIT:events:animationDone' },\n\n  vizData: [], // contains the visualization-compatible graph\n  /**\n   * This method will bind the event handlers it is interested and initialize the class.\n   */\n  init: function init(serverData) {\n    var self = JIT;\n\n    $('.zoomIn').click(self.zoomIn);\n    $('.zoomOut').click(self.zoomOut);\n\n    var zoomExtents = function zoomExtents(event) {\n      self.zoomExtents(event, _Visualize2.default.mGraph.canvas);\n    };\n    $('.zoomExtents').click(zoomExtents);\n\n    $('.takeScreenshot').click(_Map2.default.exportImage);\n\n    self.topicDescImage = new Image();\n    self.topicDescImage.src = serverData['topic_description_signifier.png'];\n\n    self.topicLinkImage = new Image();\n    self.topicLinkImage.src = serverData['topic_link_signifier.png'];\n  },\n  /**\n      * convert our topic JSON into something JIT can use\n      */\n  convertModelsToJIT: function convertModelsToJIT(topics, synapses) {\n    var jitReady = [];\n\n    var synapsesToRemove = [];\n    var mapping = void 0;\n    var node = void 0;\n    var nodes = {};\n    var existingEdge = void 0;\n    var edge = void 0;\n    var edges = [];\n\n    topics.each(function (t) {\n      node = t.createNode();\n      nodes[node.id] = node;\n    });\n    synapses.each(function (s) {\n      edge = s.createEdge();\n\n      if (topics.get(s.get('topic1_id')) === undefined || topics.get(s.get('topic2_id')) === undefined) {\n        // this means it's an invalid synapse\n        synapsesToRemove.push(s);\n      } else if (nodes[edge.nodeFrom] && nodes[edge.nodeTo]) {\n        existingEdge = (0, _find3.default)(edges, {\n          nodeFrom: edge.nodeFrom,\n          nodeTo: edge.nodeTo }) ||\n\n        (0, _find3.default)(edges, {\n          nodeFrom: edge.nodeTo,\n          nodeTo: edge.nodeFrom });\n\n\n        if (existingEdge) {\n          // for when you're dealing with multiple relationships between the same two topics\n          if (_Active2.default.Map) {\n            mapping = s.getMapping();\n            existingEdge.data['$mappingIDs'].push(mapping.id);\n          }\n          existingEdge.data['$synapseIDs'].push(s.id);\n        } else {\n          // for when you're dealing with a topic that has relationships to many different nodes\n          nodes[edge.nodeFrom].adjacencies.push(edge);\n          edges.push(edge);\n        }\n      }\n    });\n\n    (0, _each3.default)(nodes, function (node) {\n      jitReady.push(node);\n    });\n\n    return [jitReady, synapsesToRemove];\n  },\n  prepareVizData: function prepareVizData() {\n    var self = JIT;\n    var mapping = void 0;\n\n    // reset/empty vizData\n    self.vizData = [];\n    _Visualize2.default.loadLater = false;\n\n    var results = self.convertModelsToJIT(_DataModel2.default.Topics, _DataModel2.default.Synapses);\n\n    self.vizData = results[0];\n\n    // clean up the synapses array in case of any faulty data\n    (0, _each3.default)(results[1], function (synapse) {\n      mapping = synapse.getMapping();\n      _DataModel2.default.Synapses.remove(synapse);\n      if (_DataModel2.default.Mappings) _DataModel2.default.Mappings.remove(mapping);\n    });\n\n    // set up addTopic instructions in case they delete all the topics\n    // i.e. if there are 0 topics at any time, it should have instructions again\n    $('#instructions div').hide();\n    if (_Active2.default.Map && _Active2.default.Map.authorizeToEdit(_Active2.default.Mapper)) {\n      $('#instructions div.addTopic').show();\n    }\n\n    if (self.vizData.length === 0) {\n      _GlobalUI2.default.showDiv('#instructions');\n      _Visualize2.default.loadLater = true;\n    } else {\n      _GlobalUI2.default.hideDiv('#instructions');\n    }\n\n    _Visualize2.default.render();\n  }, // prepareVizData\n  edgeRender: function edgeRender(adj, canvas) {\n    // get nodes cartesian coordinates\n    var pos = adj.nodeFrom.pos.getc(true);\n    var posChild = adj.nodeTo.pos.getc(true);\n\n    var synapse = void 0;\n    if (adj.getData('displayIndex')) {\n      synapse = adj.getData('synapses')[adj.getData('displayIndex')];\n      if (!synapse) {\n        delete adj.data.$displayIndex;\n        synapse = adj.getData('synapses')[0];\n      }\n    } else {\n      synapse = adj.getData('synapses')[0];\n    }\n\n    if (!synapse) return; // this means there are no corresponding synapses for\n    // this edge, don't render it\n\n    // label placement on edges\n    if (canvas.denySelected) {\n      var color = _Settings2.default.colors.synapses.normal;\n      canvas.getCtx().fillStyle = canvas.getCtx().strokeStyle = color;\n    }\n    JIT.renderEdgeArrows(_JIT2.default.Graph.Plot.edgeHelper, adj, synapse, canvas);\n\n    // check for edge label in data\n    var desc = synapse.get('desc');\n\n    var showDesc = adj.getData('showDesc');\n\n    var drawSynapseCount = function drawSynapseCount(context, x, y, count) {\n      /*\n                                                                            circle size: 16x16px\n                                                                            positioning: overlay and center on top right corner of synapse label - 8px left and 8px down\n                                                                            color: #dab539\n                                                                            border color: #424242\n                                                                            border size: 1.5px\n                                                                            font: DIN medium\n                                                                            font-size: 14pt\n                                                                            font-color: #424242\n                                                                            */\n      context.beginPath();\n      context.arc(x, y, 8, 0, 2 * Math.PI, false);\n      context.fillStyle = '#DAB539';\n      context.strokeStyle = '#424242';\n      context.lineWidth = 1.5;\n      context.closePath();\n      context.fill();\n      context.stroke();\n\n      // add the synapse count\n      context.fillStyle = '#424242';\n      context.textAlign = 'center';\n      context.font = '14px din-medium';\n\n      context.fillText(count, x, y + 5);\n    };\n\n    if (!canvas.denySelected && desc !== '' && showDesc) {\n      // '&amp;' to '&'\n      desc = _Util2.default.decodeEntities(desc);\n\n      // now adjust the label placement\n      var ctx = canvas.getCtx();\n      ctx.font = 'bold 14px arial';\n      ctx.fillStyle = '#FFF';\n      ctx.textBaseline = 'alphabetic';\n\n      var arrayOfLabelLines = _Util2.default.splitLine(desc, 25).split('\\n');\n      var lineWidths = [];\n      for (var index = 0; index < arrayOfLabelLines.length; ++index) {\n        lineWidths.push(ctx.measureText(arrayOfLabelLines[index]).width);\n      }\n      var width = Math.max.apply(null, lineWidths) + 16;\n      var height = 16 * arrayOfLabelLines.length + 8;\n\n      var x = (pos.x + posChild.x - width) / 2;\n      var y = (pos.y + posChild.y) / 2 - height / 2;\n\n      var radius = 5;\n\n      // render background\n      ctx.beginPath();\n      ctx.moveTo(x + radius, y);\n      ctx.lineTo(x + width - radius, y);\n      ctx.quadraticCurveTo(x + width, y, x + width, y + radius);\n      ctx.lineTo(x + width, y + height - radius);\n      ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);\n      ctx.lineTo(x + radius, y + height);\n      ctx.quadraticCurveTo(x, y + height, x, y + height - radius);\n      ctx.lineTo(x, y + radius);\n      ctx.quadraticCurveTo(x, y, x + radius, y);\n      ctx.closePath();\n      ctx.fill();\n\n      // get number of synapses\n      var synapseNum = adj.getData('synapses').length;\n\n      // render text\n      ctx.fillStyle = '#424242';\n      ctx.textAlign = 'center';\n      for (var _index = 0; _index < arrayOfLabelLines.length; ++_index) {\n        ctx.fillText(arrayOfLabelLines[_index], x + width / 2, y + 18 + 16 * _index);\n      }\n\n      if (synapseNum > 1) {\n        drawSynapseCount(ctx, x + width, y, synapseNum);\n      }\n    } else if (!canvas.denySelected && showDesc) {\n      // get number of synapses\n      var _synapseNum = adj.getData('synapses').length;\n\n      if (_synapseNum > 1) {\n        var _ctx = canvas.getCtx();\n        var _x = (pos.x + posChild.x) / 2;\n        var _y = (pos.y + posChild.y) / 2;\n        drawSynapseCount(_ctx, _x, _y, _synapseNum);\n      }\n    }\n  }, // edgeRender\n  ForceDirected: {\n    animateSavedLayout: {\n      modes: ['linear'],\n      // TODO fix tests so we don't need _.get\n      transition: (0, _get3.default)(_JIT2.default, 'Trans.Quad.easeInOut'),\n      duration: 800,\n      onComplete: function onComplete() {\n        _Visualize2.default.mGraph.busy = false;\n        $(document).trigger(JIT.events.animationDone);\n      } },\n\n    animateFDLayout: {\n      modes: ['linear'],\n      // TODO fix tests so we don't need _.get\n      transition: (0, _get3.default)(_JIT2.default, 'Trans.Elastic.easeOut'),\n      duration: 800,\n      onComplete: function onComplete() {\n        _Visualize2.default.mGraph.busy = false;\n      } },\n\n    graphSettings: {\n      // id of the visualization container\n      injectInto: 'infovis',\n      // Enable zooming and panning\n      // by scrolling and DnD\n      Navigation: {\n        enable: true,\n        // Enable panning events only if we're dragging the empty\n        // canvas (and not a node).\n        panning: 'avoid nodes',\n        zooming: 28 // zoom speed. higher is more sensible\n      },\n      // Change node and edge styles such as\n      // color and width.\n      // These properties are also set per node\n      // with dollar prefixed data-properties in the\n      // JSON structure.\n      Node: {\n        overridable: true,\n        color: '#2D6A5D',\n        type: 'customNode',\n        dim: 25 },\n\n      Edge: {\n        overridable: true,\n        color: _Settings2.default.colors.synapses.normal,\n        type: 'customEdge',\n        lineWidth: 2,\n        alpha: 1 },\n\n      // Native canvas text styling\n      Label: {\n        type: 'Native', // Native or HTML\n        size: 20,\n        family: 'arial',\n        textBaseline: 'alphabetic',\n        color: _Settings2.default.colors.labels.text },\n\n      // Add Tips\n      Tips: {\n        enable: false,\n        onShow: function onShow(tip, node) {} },\n\n      // Add node events\n      Events: {\n        enable: true,\n        enableForEdges: true,\n        onMouseMove: function onMouseMove(node, eventInfo, e) {\n          JIT.onMouseMoveHandler(node, eventInfo, e);\n          // console.log('called mouse move handler')\n        },\n        // Update node positions when dragged\n        onDragMove: function onDragMove(node, eventInfo, e) {\n          JIT.onDragMoveTopicHandler(node, eventInfo, e);\n          // console.log('called drag move handler')\n        },\n        onDragEnd: function onDragEnd(node, eventInfo, e) {\n          JIT.onDragEndTopicHandler(node, eventInfo, e, false);\n          // console.log('called drag end handler')\n        },\n        onDragCancel: function onDragCancel(node, eventInfo, e) {\n          JIT.onDragCancelHandler(node, eventInfo, e, false);\n        },\n        // Implement the same handler for touchscreens\n        onTouchStart: function onTouchStart(node, eventInfo, e) {},\n        // Implement the same handler for touchscreens\n        onTouchMove: function onTouchMove(node, eventInfo, e) {\n          JIT.onDragMoveTopicHandler(node, eventInfo, e);\n        },\n        // Implement the same handler for touchscreens\n        onTouchEnd: function onTouchEnd(node, eventInfo, e) {},\n        // Implement the same handler for touchscreens\n        onTouchCancel: function onTouchCancel(node, eventInfo, e) {},\n        // Add also a click handler to nodes\n        onClick: function onClick(node, eventInfo, e) {\n          // remove the rightclickmenu\n          $('.rightclickmenu').remove();\n\n          if (_Mouse2.default.boxStartCoordinates) {\n            if (e.ctrlKey) {\n              _Visualize2.default.mGraph.busy = false;\n              _Mouse2.default.boxEndCoordinates = eventInfo.getPos();\n\n              var bS = _Mouse2.default.boxStartCoordinates;\n              var bE = _Mouse2.default.boxEndCoordinates;\n              if (Math.abs(bS.x - bE.x) > 20 && Math.abs(bS.y - bE.y) > 20) {\n                JIT.zoomToBox(e);\n                return;\n              } else {\n                _Mouse2.default.boxStartCoordinates = null;\n                _Mouse2.default.boxEndCoordinates = null;\n              }\n            }\n\n            if (e.shiftKey) {\n              _Visualize2.default.mGraph.busy = false;\n              _Mouse2.default.boxEndCoordinates = eventInfo.getPos();\n              JIT.selectWithBox(e);\n              return;\n            }\n          }\n\n          if (e.target.id !== 'infovis-canvas') return false;\n\n          // clicking on a edge, node, or clicking on blank part of canvas?\n          if (node.nodeFrom) {\n            JIT.selectEdgeOnClickHandler(node, e);\n          } else if (node && !node.nodeFrom) {\n            JIT.selectNodeOnClickHandler(node, e);\n            _Engine2.default.setFocusNode(node);\n          } else {\n            JIT.canvasClickHandler(eventInfo.getPos(), e);\n          } // if\n        },\n        // Add also a click handler to nodes\n        onRightClick: function onRightClick(node, eventInfo, e) {\n          // remove the rightclickmenu\n          $('.rightclickmenu').remove();\n\n          if (_Mouse2.default.boxStartCoordinates) {\n            _Create2.default.newSynapse.hide();\n            _Visualize2.default.mGraph.busy = false;\n            _Mouse2.default.boxEndCoordinates = eventInfo.getPos();\n            JIT.selectWithBox(e);\n            return;\n          }\n\n          if (e.target.id !== 'infovis-canvas') return false;\n\n          // clicking on a edge, node, or clicking on blank part of canvas?\n          if (node.nodeFrom) {\n            JIT.selectEdgeOnRightClickHandler(node, e);\n          } else if (node && !node.nodeFrom) {\n            JIT.selectNodeOnRightClickHandler(node, e);\n          } else {\n            // right click open space\n            _Create2.default.newSynapse.hide();\n          }\n        } },\n\n      // Number of iterations for the FD algorithm\n      iterations: 200,\n      // Edge length\n      levelDistance: 200 },\n\n    nodeSettings: {\n      'customNode': {\n        'render': function render(node, canvas) {\n          var pos = node.pos.getc(true);\n          var dim = node.getData('dim');\n          var topic = node.getData('topic');\n          var metacode = topic ? topic.getMetacode() : false;\n          var ctx = canvas.getCtx();\n\n          // if the topic is selected draw a circle around it\n          if (!canvas.denySelected && node.selected) {\n            ctx.beginPath();\n            ctx.arc(pos.x, pos.y, dim + 3, 0, 2 * Math.PI, false);\n            ctx.strokeStyle = _Settings2.default.colors.topics.selected;\n            ctx.lineWidth = 2;\n            ctx.stroke();\n          }\n\n          if (!metacode ||\n          !metacode.get('image') ||\n          !metacode.get('image').complete ||\n          typeof metacode.get('image').naturalWidth !== 'undefined' &&\n          metacode.get('image').naturalWidth === 0) {\n            ctx.beginPath();\n            ctx.arc(pos.x, pos.y, dim, 0, 2 * Math.PI, false);\n            ctx.fillStyle = '#B6B2FD';\n            ctx.fill();\n          } else {\n            ctx.drawImage(metacode.get('image'), pos.x - dim, pos.y - dim, dim * 2, dim * 2);\n          }\n\n          // if the topic has a link, draw a small image to indicate that\n          var hasLink = topic && topic.get('link') !== '' && topic.get('link') !== null;\n          var linkImage = JIT.topicLinkImage;\n          var linkImageLoaded = linkImage.complete ||\n          typeof linkImage.naturalWidth !== 'undefined' &&\n          linkImage.naturalWidth !== 0;\n          if (hasLink && linkImageLoaded) {\n            ctx.drawImage(linkImage, pos.x - dim - 8, pos.y - dim - 8, 16, 16);\n          }\n\n          // if the topic has a desc, draw a small image to indicate that\n          var hasDesc = topic && topic.get('desc') !== '' && topic.get('desc') !== null;\n          var descImage = JIT.topicDescImage;\n          var descImageLoaded = descImage.complete ||\n          typeof descImage.naturalWidth !== 'undefined' &&\n          descImage.naturalWidth !== 0;\n          if (hasDesc && descImageLoaded) {\n            ctx.drawImage(descImage, pos.x + dim - 8, pos.y - dim - 8, 16, 16);\n          }\n        },\n        'contains': function contains(node, pos) {\n          var npos = node.pos.getc(true);\n          var dim = node.getData('dim');\n          var arrayOfLabelLines = _Util2.default.splitLine(node.name, 25).split('\\n');\n          var ctx = _Visualize2.default.mGraph.canvas.getCtx();\n\n          var height = 25 * arrayOfLabelLines.length;\n\n          var lineWidths = [];\n          for (var index = 0; index < arrayOfLabelLines.length; ++index) {\n            lineWidths.push(ctx.measureText(arrayOfLabelLines[index]).width);\n          }\n          var width = Math.max.apply(null, lineWidths) + 8;\n          var labely = npos.y + node.getData('height') + 5 + height / 2;\n\n          var overLabel = this.nodeHelper.rectangle.contains({\n            x: npos.x,\n            y: labely },\n          pos, width, height);\n\n          return this.nodeHelper.circle.contains(npos, pos, dim) || overLabel;\n        } } },\n\n\n    edgeSettings: {\n      'customEdge': {\n        'render': function render(adj, canvas) {\n          JIT.edgeRender(adj, canvas);\n        },\n        'contains': function contains(adj, pos) {\n          var from = adj.nodeFrom.pos.getc();\n          var to = adj.nodeTo.pos.getc();\n\n          // this fixes an issue where when edges are perfectly horizontal or perfectly vertical\n          // it becomes incredibly difficult to hover over them\n          if (-1 < pos.x && pos.x < 1) pos.x = 0;\n          if (-1 < pos.y && pos.y < 1) pos.y = 0;\n\n          return _JIT2.default.Graph.Plot.edgeHelper.line.contains(from, to, pos, adj.Edge.epsilon + 5);\n        } } } },\n\n\n  // ForceDirected\n  ForceDirected3D: {\n    animate: {\n      modes: ['linear'],\n      // TODO fix tests so we don't need _.get\n      transition: (0, _get3.default)(_JIT2.default, 'Trans.Elastic.easeOut'),\n      duration: 2500,\n      onComplete: function onComplete() {\n        _Visualize2.default.mGraph.busy = false;\n      } },\n\n    graphSettings: {\n      // id of the visualization container\n      injectInto: 'infovis',\n      type: '3D',\n      Scene: {\n        Lighting: {\n          enable: false,\n          ambient: [0.5, 0.5, 0.5],\n          directional: {\n            direction: {\n              x: 1,\n              y: 0,\n              z: -1 },\n\n            color: [0.9, 0.9, 0.9] } } },\n\n\n\n      // Enable zooming and panning\n      // by scrolling and DnD\n      Navigation: {\n        enable: false,\n        // Enable panning events only if we're dragging the empty\n        // canvas (and not a node).\n        panning: 'avoid nodes',\n        zooming: 10 // zoom speed. higher is more sensible\n      },\n      // Change node and edge styles such as\n      // color and width.\n      // These properties are also set per node\n      // with dollar prefixed data-properties in the\n      // JSON structure.\n      Node: {\n        overridable: true,\n        type: 'sphere',\n        dim: 15,\n        color: '#ffffff' },\n\n      Edge: {\n        overridable: false,\n        type: 'tube',\n        color: '#111',\n        lineWidth: 3 },\n\n      // Native canvas text styling\n      Label: {\n        type: 'HTML', // Native or HTML\n        size: 10,\n        style: 'bold' },\n\n      // Add node events\n      Events: {\n        enable: true,\n        type: 'Native',\n        i: 0,\n        onMouseMove: function onMouseMove(node, eventInfo, e) {\n          // if(this.i++ % 3) return\n          var pos = eventInfo.getPos();\n          _Visualize2.default.cameraPosition.x += (pos.x - _Visualize2.default.cameraPosition.x) * 0.5;\n          _Visualize2.default.cameraPosition.y += (-pos.y - _Visualize2.default.cameraPosition.y) * 0.5;\n          _Visualize2.default.mGraph.plot();\n        },\n        onMouseWheel: function onMouseWheel(delta) {\n          _Visualize2.default.cameraPosition.z += -delta * 20;\n          _Visualize2.default.mGraph.plot();\n        },\n        onClick: function onClick() {} },\n\n      // Number of iterations for the FD algorithm\n      iterations: 200,\n      // Edge length\n      levelDistance: 100 },\n\n    nodeSettings: {},\n\n\n    edgeSettings: {} },\n\n\n  // ForceDirected3D\n  RGraph: {\n    animate: {\n      modes: ['polar'],\n      duration: 800,\n      onComplete: function onComplete() {\n        _Visualize2.default.mGraph.busy = false;\n      } },\n\n    // this will just be used to patch the ForceDirected graphsettings with the few things which actually differ\n    background: {\n      levelDistance: 200,\n      numberOfCircles: 4,\n      CanvasStyles: {\n        strokeStyle: '#333',\n        lineWidth: 1.5 } },\n\n\n    levelDistance: 200 },\n\n  onMouseEnter: function onMouseEnter(edge) {\n    var filtered = edge.getData('alpha') === 0;\n\n    // don't do anything if the edge is filtered\n    // or if the canvas is animating\n    if (filtered || _Visualize2.default.mGraph.busy) return;\n\n    $('canvas').css('cursor', 'pointer');\n    var edgeIsSelected = _Selected2.default.Edges.indexOf(edge);\n    // following if statement only executes if the edge being hovered over is not selected\n    if (edgeIsSelected === -1) {\n      edge.setData('showDesc', true, 'current');\n    }\n\n    edge.setDataset('end', {\n      lineWidth: 4 });\n\n    _Visualize2.default.mGraph.fx.animate({\n      modes: ['edge-property:lineWidth'],\n      duration: 100 });\n\n    _Visualize2.default.mGraph.plot();\n  }, // onMouseEnter\n  onMouseLeave: function onMouseLeave(edge) {\n    if (edge.getData('alpha') === 0) return; // don't do anything if the edge is filtered\n    $('canvas').css('cursor', 'default');\n    var edgeIsSelected = _Selected2.default.Edges.indexOf(edge);\n    // following if statement only executes if the edge being hovered over is not selected\n    if (edgeIsSelected === -1) {\n      edge.setData('showDesc', false, 'current');\n    }\n\n    edge.setDataset('end', {\n      lineWidth: 2 });\n\n    _Visualize2.default.mGraph.fx.animate({\n      modes: ['edge-property:lineWidth'],\n      duration: 100 });\n\n    _Visualize2.default.mGraph.plot();\n  }, // onMouseLeave\n  onMouseMoveHandler: function onMouseMoveHandler(_node, eventInfo, e) {\n    var self = JIT;\n\n    if (_Visualize2.default.mGraph.busy) return;\n\n    var node = eventInfo.getNode();\n    var edge = eventInfo.getEdge();\n\n    // if we're on top of a node object, act like there aren't edges under it\n    if (node !== false) {\n      if (_Mouse2.default.edgeHoveringOver) {\n        self.onMouseLeave(_Mouse2.default.edgeHoveringOver);\n      }\n      $('canvas').css('cursor', 'pointer');\n      return;\n    }\n\n    if (edge === false && _Mouse2.default.edgeHoveringOver !== false) {\n      // mouse not on an edge, but we were on an edge previously\n      self.onMouseLeave(_Mouse2.default.edgeHoveringOver);\n    } else if (edge !== false && _Mouse2.default.edgeHoveringOver === false) {\n      // mouse is on an edge, but there isn't a stored edge\n      self.onMouseEnter(edge);\n    } else if (edge !== false && _Mouse2.default.edgeHoveringOver !== edge) {\n      // mouse is on an edge, but a different edge is stored\n      self.onMouseLeave(_Mouse2.default.edgeHoveringOver);\n      self.onMouseEnter(edge);\n    }\n\n    // could be false\n    _Mouse2.default.edgeHoveringOver = edge;\n\n    if (!node && !edge) {\n      $('canvas').css('cursor', 'default');\n    }\n  }, // onMouseMoveHandler\n  enterKeyHandler: function enterKeyHandler(e) {\n    var creatingMap = _GlobalUI2.default.lightbox;\n    if (creatingMap === 'newmap' || creatingMap === 'forkmap') {\n      _GlobalUI2.default.CreateMap.submit();\n    } else if (e.target.id === 'topic_name' && !_Create2.default.newTopic.metacodeSelectorOpen) {\n      _Topic2.default.createTopicLocally();\n    } else if (_Create2.default.newSynapse.beingCreated) {\n      _Synapse2.default.createSynapseLocally(_Create2.default.newSynapse.topic1id, _Create2.default.newSynapse.topic2id);\n      _Engine2.default.runLayout();\n      _Create2.default.newSynapse.hide();\n    }\n  }, // enterKeyHandler\n  escKeyHandler: function escKeyHandler() {\n    _Control2.default.deselectAllEdges();\n    _Control2.default.deselectAllNodes();\n  }, // escKeyHandler\n  onDragMoveTopicHandler: function onDragMoveTopicHandler(node, eventInfo, e) {\n    var self = JIT;\n\n    var authorized = _Active2.default.Map && _Active2.default.Map.authorizeToEdit(_Active2.default.Mapper);\n\n    if (node && !node.nodeFrom) {\n\n      var pos = eventInfo.getPos();\n      if ((e.button === 0 || e.buttons === 0) && authorized) {\n        // start synapse creation  ->second option is for firefox\n        if (JIT.tempInit === false) {\n          JIT.tempNode = node;\n          JIT.tempInit = true;\n          _Create2.default.newSynapse.hide();\n          // set the draw synapse start positions\n          _Mouse2.default.synapseStartCoordinates = [];\n          if (_Selected2.default.Nodes.length) {\n            _Selected2.default.Nodes.forEach(function (n) {\n              _Mouse2.default.synapseStartCoordinates.push({\n                x: n.pos.getc().x,\n                y: n.pos.getc().y });\n\n            });\n          } else\n          {\n            _Mouse2.default.synapseStartCoordinates = [{\n              x: node.pos.getc().x,\n              y: node.pos.getc().y }];\n\n          }\n          _Mouse2.default.synapseEndCoordinates = {\n            x: pos.x,\n            y: pos.y };\n\n        }\n        //\n        var temp = eventInfo.getNode();\n        if (temp !== false && temp.id !== node.id && _Selected2.default.Nodes.indexOf(temp) === -1) {// this means a Node has been returned\n          JIT.tempNode2 = temp;\n          _Mouse2.default.synapseEndCoordinates = {\n            x: JIT.tempNode2.pos.getc().x,\n            y: JIT.tempNode2.pos.getc().y };\n\n          // before making the highlighted one bigger, make sure all the others are regular size\n          _Visualize2.default.mGraph.graph.eachNode(function (n) {\n            n.setData('dim', 25, 'current');\n          });\n          temp.setData('dim', 35, 'current');\n        } else if (!temp) {\n          JIT.tempNode2 = null;\n          _Mouse2.default.synapseEndCoordinates = {\n            x: pos.x,\n            y: pos.y };\n\n          _Visualize2.default.mGraph.graph.eachNode(function (n) {\n            n.setData('dim', 25, 'current');\n          });\n        }\n      }\n    }\n    _Visualize2.default.mGraph.plot();\n  }, // onDragMoveTopicHandler\n  onDragCancelHandler: function onDragCancelHandler(node, eventInfo, e) {\n    JIT.tempNode = null;\n    if (JIT.tempNode2) JIT.tempNode2.setData('dim', 25, 'current');\n    JIT.tempNode2 = null;\n    JIT.tempInit = false;\n    // reset the draw synapse positions to false\n    _Mouse2.default.synapseStartCoordinates = [];\n    _Mouse2.default.synapseEndCoordinates = null;\n    _Visualize2.default.mGraph.plot();\n  }, // onDragCancelHandler\n  onDragEndTopicHandler: function onDragEndTopicHandler(node, eventInfo, e) {\n    var self = JIT;\n    var midpoint = {};\n    var pixelPos = void 0;\n    var mapping = void 0;\n\n    if (JIT.tempInit && JIT.tempNode2 === null) {\n      _Mouse2.default.synapseEndCoordinates = null;\n    } else if (JIT.tempInit && JIT.tempNode2 !== null) {\n      // this means you want to create a synapse between two existing topics\n      _Create2.default.newSynapse.topic1id = JIT.tempNode.getData('topic').id;\n      _Create2.default.newSynapse.topic2id = JIT.tempNode2.getData('topic').id;\n      _Create2.default.newSynapse.node1 = JIT.tempNode;\n      _Create2.default.newSynapse.node2 = JIT.tempNode2;\n      JIT.tempNode2.setData('dim', 25, 'current');\n      midpoint.x = JIT.tempNode.pos.getc().x + (JIT.tempNode2.pos.getc().x - JIT.tempNode.pos.getc().x) / 2;\n      midpoint.y = JIT.tempNode.pos.getc().y + (JIT.tempNode2.pos.getc().y - JIT.tempNode.pos.getc().y) / 2;\n      pixelPos = _Util2.default.coordsToPixels(_Visualize2.default.mGraph, midpoint);\n      $('#new_synapse').css('left', pixelPos.x + 'px');\n      $('#new_synapse').css('top', pixelPos.y + 'px');\n      _Create2.default.newSynapse.open();\n      JIT.tempNode = null;\n      JIT.tempNode2 = null;\n      JIT.tempInit = false;\n    }\n    _Visualize2.default.mGraph.plot();\n  }, // onDragEndTopicHandler\n  canvasClickHandler: function canvasClickHandler(canvasLoc, e) {\n    // grab the location and timestamp of the click\n    var storedTime = _Mouse2.default.lastCanvasClick;\n    var now = Date.now(); // not compatible with IE8 FYI\n    _Mouse2.default.lastCanvasClick = now;\n\n    var authorized = _Active2.default.Map && _Active2.default.Map.authorizeToEdit(_Active2.default.Mapper);\n\n    if (now - storedTime < _Mouse2.default.DOUBLE_CLICK_TOLERANCE && !_Mouse2.default.didPan) {\n      // DOUBLE CLICK\n    } else if (!_Mouse2.default.didPan) {\n      // SINGLE CLICK, no pan\n      _Filter2.default.close();\n      _TopicCard2.default.hideCard();\n      _SynapseCard2.default.hideCard();\n      $('.rightclickmenu').remove();\n      // reset the draw synapse positions to false\n      _Mouse2.default.synapseStartCoordinates = [];\n      _Mouse2.default.synapseEndCoordinates = null;\n      JIT.tempInit = false;\n      JIT.tempNode = null;\n      JIT.tempNode2 = null;\n      if (!e.ctrlKey && !e.shiftKey) {\n        _Control2.default.deselectAllEdges();\n        _Control2.default.deselectAllNodes();\n      }\n    } else {\n      // SINGLE CLICK, resulting from pan\n    }\n  }, // canvasClickHandler\n  updateTopicPositions: function updateTopicPositions(node, pos) {\n    var len = _Selected2.default.Nodes.length;\n    // this is used to send nodes that are moving to\n    // other realtime collaborators on the same map\n    var positionsToSend = {};\n\n    // first define offset for each node\n    var xOffset = [];\n    var yOffset = [];\n    for (var i = 0; i < len; i += 1) {\n      var n = _Selected2.default.Nodes[i];\n      xOffset[i] = n.pos.getc().x - node.pos.getc().x;\n      yOffset[i] = n.pos.getc().y - node.pos.getc().y;\n    } // for\n\n    for (var _i = 0; _i < len; _i += 1) {\n      var _n = _Selected2.default.Nodes[_i];\n      var x = pos.x + xOffset[_i];\n      var y = pos.y + yOffset[_i];\n      if (_n.pos.rho || _n.pos.rho === 0) {\n        // this means we're in topic view\n        var rho = Math.sqrt(x * x + y * y);\n        var theta = Math.atan2(y, x);\n        _n.pos.setp(theta, rho);\n      } else {\n        _n.pos.setc(x, y);\n      }\n\n      if (_Active2.default.Map) {\n        var topic = _n.getData('topic');\n        // we use the topic ID not the node id\n        // because we can't depend on the node id\n        // to be the same as on other collaborators\n        // maps\n        positionsToSend[topic.id] = _n.pos;\n      }\n    } // for\n\n    if (_Active2.default.Map) {\n      $(document).trigger(JIT.events.topicDrag, [positionsToSend]);\n    }\n  },\n\n  nodeDoubleClickHandler: function nodeDoubleClickHandler(node, e) {\n    _TopicCard2.default.showCard(node);\n  }, // nodeDoubleClickHandler\n  edgeDoubleClickHandler: function edgeDoubleClickHandler(adj, e) {\n    _SynapseCard2.default.showCard(adj, e);\n  }, // nodeDoubleClickHandler\n  nodeWasDoubleClicked: function nodeWasDoubleClicked() {\n    // grab the timestamp of the click\n    var storedTime = _Mouse2.default.lastNodeClick;\n    var now = Date.now(); // not compatible with IE8 FYI\n    _Mouse2.default.lastNodeClick = now;\n\n    if (now - storedTime < _Mouse2.default.DOUBLE_CLICK_TOLERANCE) {\n      return true;\n    } else {\n      return false;\n    }\n  }, // nodeWasDoubleClicked\n  handleSelectionBeforeDragging: function handleSelectionBeforeDragging(node, e) {\n    if (_Selected2.default.Nodes.length === 0) {\n      _Control2.default.selectNode(node, e);\n    }\n    if (_Selected2.default.Nodes.indexOf(node) === -1) {\n      if (e.shiftKey) {\n        _Control2.default.selectNode(node, e);\n      } else {\n        _Control2.default.deselectAllEdges();\n        _Control2.default.deselectAllNodes();\n        _Control2.default.selectNode(node, e);\n      }\n    }\n  }, //  handleSelectionBeforeDragging\n  getNodeXY: function getNodeXY(node) {\n    if (typeof node.pos.x === 'number' && typeof node.pos.y === 'number') {\n      return node.pos;\n    } else if (typeof node.pos.theta === 'number' && typeof node.pos.rho === 'number') {\n      return new _JIT2.default.Polar(node.pos.theta, node.pos.rho).getc(true);\n    } else {\n      console.error('getNodeXY: unrecognized node pos format');\n      return {};\n    }\n  },\n  selectWithBox: function selectWithBox(e) {\n    var self = this;\n    var sX = _Mouse2.default.boxStartCoordinates.x;\n    var sY = _Mouse2.default.boxStartCoordinates.y;\n    var eX = _Mouse2.default.boxEndCoordinates.x;\n    var eY = _Mouse2.default.boxEndCoordinates.y;\n\n    if (!e.shiftKey) {\n      _Control2.default.deselectAllNodes();\n      _Control2.default.deselectAllEdges();\n    }\n\n    // select all nodes that are within the box\n    _Visualize2.default.mGraph.graph.eachNode(function (n) {\n      var pos = self.getNodeXY(n);\n      var x = pos.x;\n      var y = pos.y;\n\n      // depending on which way the person dragged the box, check that\n      // x and y are between the start and end values of the box\n      if (sX < x && x < eX && sY < y && y < eY ||\n      sX > x && x > eX && sY > y && y > eY ||\n      sX > x && x > eX && sY < y && y < eY ||\n      sX < x && x < eX && sY > y && y > eY) {\n        if (e.shiftKey) {\n          if (n.selected) {\n            _Control2.default.deselectNode(n);\n          } else {\n            _Control2.default.selectNode(n, e);\n          }\n        } else {\n          _Control2.default.selectNode(n, e);\n        }\n      }\n    });\n\n    // Convert selection box coordinates to traditional coordinates (+,+) in upper right\n    sY = -1 * sY;\n    eY = -1 * eY;\n\n    var edgesToToggle = [];\n    _DataModel2.default.Synapses.each(function (synapse) {\n      var e = synapse.get('edge');\n      if (edgesToToggle.indexOf(e) === -1) {\n        edgesToToggle.push(e);\n      }\n    });\n    edgesToToggle.forEach(function (edge) {\n      var fromNodePos = self.getNodeXY(edge.nodeFrom);\n      var fromNodeX = fromNodePos.x;\n      var fromNodeY = -1 * fromNodePos.y;\n      var toNodePos = self.getNodeXY(edge.nodeTo);\n      var toNodeX = toNodePos.x;\n      var toNodeY = -1 * toNodePos.y;\n\n      var maxX = fromNodeX;\n      var maxY = fromNodeY;\n      var minX = fromNodeX;\n      var minY = fromNodeY\n\n      // Correct maxX, MaxY values\n      ;toNodeX > maxX ? maxX = toNodeX : minX = toNodeX;\n      toNodeY > maxY ? maxY = toNodeY : minY = toNodeY;\n\n      var maxBoxX = sX;\n      var maxBoxY = sY;\n      var minBoxX = sX;\n      var minBoxY = sY\n\n      // Correct maxBoxX, maxBoxY values\n      ;eX > maxBoxX ? maxBoxX = eX : minBoxX = eX;\n      eY > maxBoxY ? maxBoxY = eY : minBoxY = eY;\n\n      // Find the slopes from the synapse fromNode to the 4 corners of the selection box\n      var slopes = [];\n      slopes.push((sY - fromNodeY) / (sX - fromNodeX));\n      slopes.push((sY - fromNodeY) / (eX - fromNodeX));\n      slopes.push((eY - fromNodeY) / (eX - fromNodeX));\n      slopes.push((eY - fromNodeY) / (sX - fromNodeX));\n\n      var minSlope = slopes[0];\n      var maxSlope = slopes[0];\n      slopes.forEach(function (entry) {\n        if (entry > maxSlope) maxSlope = entry;\n        if (entry < minSlope) minSlope = entry;\n      });\n\n      // Find synapse-in-question's slope\n      var synSlope = (toNodeY - fromNodeY) / (toNodeX - fromNodeX);\n      var b = fromNodeY - synSlope * fromNodeX;\n\n      // Use the selection box edges as test cases for synapse intersection\n      var testX = sX;\n      var testY = synSlope * testX + b;\n\n      var selectTest = void 0;\n\n      if (testX >= minX && testX <= maxX && testY >= minY && testY <= maxY && testY >= minBoxY && testY <= maxBoxY) {\n        selectTest = true;\n      }\n\n      testX = eX;\n      testY = synSlope * testX + b;\n\n      if (testX >= minX && testX <= maxX && testY >= minY && testY <= maxY && testY >= minBoxY && testY <= maxBoxY) {\n        selectTest = true;\n      }\n\n      testY = sY;\n      testX = (testY - b) / synSlope;\n\n      if (testX >= minX && testX <= maxX && testY >= minY && testY <= maxY && testX >= minBoxX && testX <= maxBoxX) {\n        selectTest = true;\n      }\n\n      testY = eY;\n      testX = (testY - b) / synSlope;\n\n      if (testX >= minX && testX <= maxX && testY >= minY && testY <= maxY && testX >= minBoxX && testX <= maxBoxX) {\n        selectTest = true;\n      }\n\n      // Case where the synapse is wholly enclosed in the seldction box\n      if (fromNodeX >= minBoxX && fromNodeX <= maxBoxX && fromNodeY >= minBoxY && fromNodeY <= maxBoxY && toNodeX >= minBoxX && toNodeX <= maxBoxX && toNodeY >= minBoxY && toNodeY <= maxBoxY) {\n        selectTest = true;\n      }\n\n      // The test synapse was selected!\n\n      if (selectTest) {\n        // shiftKey = toggleSelect, otherwise\n        if (e.shiftKey) {\n          if (_Selected2.default.Edges.indexOf(edge) !== -1) {\n            _Control2.default.deselectEdge(edge);\n          } else {\n            _Control2.default.selectEdge(edge);\n          }\n        } else {\n          _Control2.default.selectEdge(edge);\n        }\n      }\n    });\n    _Mouse2.default.boxStartCoordinates = false;\n    _Mouse2.default.boxEndCoordinates = false;\n    _Visualize2.default.mGraph.plot();\n  }, // selectWithBox\n  selectNodeOnClickHandler: function selectNodeOnClickHandler(node, e) {\n    if (_Visualize2.default.mGraph.busy) return;\n\n    var self = JIT;\n\n    // Copy topic title to clipboard\n    if (e.button === 1 && e.ctrlKey) _clipboardJs2.default.copy(node.name);\n\n    // catch right click on mac, which is often like ctrl+click\n    if (navigator.platform.indexOf('Mac') !== -1 && e.ctrlKey) {\n      self.selectNodeOnRightClickHandler(node, e);\n      return;\n    }\n\n    // if on a topic page, let alt+click center you on a new topic\n    if (_Active2.default.Topic && e.altKey) {\n      JIT.RGraph.centerOn(node.id);\n      return;\n    }\n\n    var check = self.nodeWasDoubleClicked();\n    if (check) {\n      self.nodeDoubleClickHandler(node, e);\n      return;\n    } else {\n      // wait a certain length of time, then check again, then run this code\n      setTimeout(function () {\n        if (!JIT.nodeWasDoubleClicked()) {\n          if (e.button === 1 && !e.ctrlKey) {\n            var len = _Selected2.default.Nodes.length;\n\n            for (var i = 0; i < len; i += 1) {\n              var n = _Selected2.default.Nodes[i];\n              var result = _Util2.default.openLink(_DataModel2.default.Topics.get(n.id).attributes.link);\n\n              if (!result) {// if link failed to open\n                break;\n              }\n            }\n\n            if (!node.selected) _Util2.default.openLink(_DataModel2.default.Topics.get(node.id).attributes.link);\n          }\n        }\n      }, _Mouse2.default.DOUBLE_CLICK_TOLERANCE);\n    }\n  }, // selectNodeOnClickHandler\n  selectNodeOnRightClickHandler: function selectNodeOnRightClickHandler(node, e) {\n    // the 'node' variable is a JIT node, the one that was clicked on\n    // the 'e' variable is the click event\n\n    e.preventDefault();\n    e.stopPropagation();\n\n    if (_Visualize2.default.mGraph.busy) return;\n\n    // select the node\n    _Control2.default.selectNode(node, e);\n\n    // delete old right click menu\n    $('.rightclickmenu').remove();\n    // create new menu for clicked on node\n    var rightclickmenu = document.createElement('div');\n    rightclickmenu.className = 'rightclickmenu';\n    // prevent the custom context menu from immediately opening the default context menu as well\n    rightclickmenu.setAttribute('oncontextmenu', 'return false');\n\n    // add the proper options to the menu\n    var menustring = '<ul>';\n\n    var authorized = _Active2.default.Map && _Active2.default.Map.authorizeToEdit(_Active2.default.Mapper);\n\n    var disabled = authorized ? '' : 'disabled';\n\n    if (_Active2.default.Map) menustring += '<li class=\"rc-hide\"><div class=\"rc-icon\"></div>Hide until refresh<div class=\"rc-keyboard\">Ctrl+H</div></li>';\n    if (_Active2.default.Map && _Active2.default.Mapper) menustring += '<li class=\"rc-remove ' + disabled + '\"><div class=\"rc-icon\"></div>Remove from map<div class=\"rc-keyboard\">Ctrl+M</div></li>';\n    if (_Active2.default.Topic) menustring += '<li class=\"rc-remove\"><div class=\"rc-icon\"></div>Remove from view<div class=\"rc-keyboard\">Ctrl+M</div></li>';\n    if (_Active2.default.Map && _Active2.default.Mapper) menustring += '<li class=\"rc-delete ' + disabled + '\"><div class=\"rc-icon\"></div>Delete<div class=\"rc-keyboard\">Ctrl+D</div></li>';\n\n    if (_Active2.default.Topic) {\n      menustring += '<li class=\"rc-center\"><div class=\"rc-icon\"></div>Center this topic<div class=\"rc-keyboard\">Alt+E</div></li>';\n    }\n\n    menustring += '<li class=\"rc-popout\"><div class=\"rc-icon\"></div>Open in new tab</li>';\n\n    if (_Active2.default.Mapper) {\n      var options = (0, _outdent2.default)(_templateObject);\n\n\n\n\n\n\n      menustring += '<li class=\"rc-spacer\"></li>';\n\n      menustring += (0, _outdent2.default)(_templateObject2,\n\n\n\n      options);\n\n\n\n      var metacodeOptions = $('#metacodeOptions').html();\n\n      menustring += '<li class=\"rc-metacode\"><div class=\"rc-icon\"></div>Change metacode' + metacodeOptions + '<div class=\"expandLi\"></div></li>';\n    }\n    if (_Active2.default.Topic) {\n      if (!_Active2.default.Mapper) {\n        menustring += '<li class=\"rc-spacer\"></li>';\n      }\n\n      // set up the get sibling menu as a \"lazy load\"\n      // only fill in the submenu when they hover over the get siblings list item\n      var siblingMenu = (0, _outdent2.default)(_templateObject3);\n\n\n\n\n      menustring += '<li class=\"rc-siblings\"><div class=\"rc-icon\"></div>Reveal siblings' + siblingMenu + '<div class=\"expandLi\"></div></li>';\n    }\n\n    menustring += '</ul>';\n    rightclickmenu.innerHTML = menustring;\n\n    // position the menu where the click happened\n    var position = {};\n    var RIGHTCLICK_WIDTH = 300;\n    var RIGHTCLICK_HEIGHT = 144; // this does vary somewhat, but we can use static\n    var SUBMENUS_WIDTH = 256;\n    var MAX_SUBMENU_HEIGHT = 270;\n    var windowWidth = $(window).width();\n    var windowHeight = $(window).height();\n\n    if (windowWidth - e.clientX < SUBMENUS_WIDTH) {\n      position.right = windowWidth - e.clientX;\n      $(rightclickmenu).addClass('moveMenusToLeft');\n    } else if (windowWidth - e.clientX < RIGHTCLICK_WIDTH) {\n      position.right = windowWidth - e.clientX;\n    } else if (windowWidth - e.clientX < RIGHTCLICK_WIDTH + SUBMENUS_WIDTH) {\n      position.left = e.clientX;\n      $(rightclickmenu).addClass('moveMenusToLeft');\n    } else {\n      position.left = e.clientX;\n    }\n\n    if (windowHeight - e.clientY < MAX_SUBMENU_HEIGHT) {\n      position.bottom = windowHeight - e.clientY;\n      $(rightclickmenu).addClass('moveMenusUp');\n    } else if (windowHeight - e.clientY < RIGHTCLICK_HEIGHT + MAX_SUBMENU_HEIGHT) {\n      position.top = e.clientY;\n      $(rightclickmenu).addClass('moveMenusUp');\n    } else {\n      position.top = e.clientY;\n    }\n\n    $(rightclickmenu).css(position);\n    // add the menu to the page\n    $('#wrapper').append(rightclickmenu);\n\n    // attach events to clicks on the list items\n\n    // delete the selected things from the database\n    if (authorized) {\n      $('.rc-delete').click(function () {\n        $('.rightclickmenu').remove();\n        _Control2.default.deleteSelected();\n      });\n    }\n\n    // remove the selected things from the map\n    if (_Active2.default.Topic || authorized) {\n      $('.rc-remove').click(function () {\n        $('.rightclickmenu').remove();\n        _Control2.default.removeSelectedEdges();\n        _Control2.default.removeSelectedNodes();\n      });\n    }\n\n    // hide selected nodes and synapses until refresh\n    $('.rc-hide').click(function () {\n      $('.rightclickmenu').remove();\n      _Control2.default.hideSelectedEdges();\n      _Control2.default.hideSelectedNodes();\n    });\n\n    // when in radial, center on the topic you picked\n    $('.rc-center').click(function () {\n      $('.rightclickmenu').remove();\n      _Topic2.default.centerOn(node.id);\n    });\n\n    // open the entity in a new tab\n    $('.rc-popout').click(function () {\n      $('.rightclickmenu').remove();\n      var win = window.open('/topics/' + node.id, '_blank');\n      win.focus();\n    });\n\n    // change the permission of all the selected nodes and synapses that you were the originator of\n    $('.rc-permission li').click(function () {\n      $('.rightclickmenu').remove();\n      // $(this).text() will be 'commons' 'public' or 'private'\n      _Control2.default.updateSelectedPermissions($(this).text());\n    });\n\n    // change the metacode of all the selected nodes that you have edit permission for\n    $('.rc-metacode li li').click(function () {\n      $('.rightclickmenu').remove();\n      //\n      _Control2.default.updateSelectedMetacodes($(this).attr('data-id'));\n    });\n\n    // fetch relatives\n    var fetchSent = false;\n    $('.rc-siblings').hover(function () {\n      if (!fetchSent) {\n        JIT.populateRightClickSiblings(node);\n        fetchSent = true;\n      }\n    });\n    $('.rc-siblings .fetchAll').click(function () {\n      $('.rightclickmenu').remove();\n      // data-id is a metacode id\n      _Topic2.default.fetchRelatives(node);\n    });\n  }, // selectNodeOnRightClickHandler,\n  populateRightClickSiblings: function populateRightClickSiblings(node) {\n    // depending on how many topics are selected, do different things\n    var topic = node.getData('topic');\n\n    // add a loading icon for now\n    var loader = new CanvasLoader('loadingSiblings');\n    loader.setColor('#4FC059'); // default is '#000000'\n    loader.setDiameter(15); // default is 40\n    loader.setDensity(41); // default is 40\n    loader.setRange(0.9); // default is 1.3\n    loader.show(); // Hidden by default\n\n    var topics = _DataModel2.default.Topics.map(function (t) {return t.id;});\n    var topicsString = topics.join();\n\n    var successCallback = function successCallback(data) {\n      $('#loadingSiblings').remove();\n\n      for (var key in data) {\n        var string = _DataModel2.default.Metacodes.get(key).get('name') + ' (' + data[key] + ')';\n        $('#fetchSiblingList').append('<li class=\"getSiblings\" data-id=\"' + key + '\">' + string + '</li>');\n      }\n\n      $('.rc-siblings .getSiblings').click(function () {\n        $('.rightclickmenu').remove();\n        // data-id is a metacode id\n        _Topic2.default.fetchRelatives(node, $(this).attr('data-id'));\n      });\n    };\n\n    $.ajax({\n      type: 'GET',\n      url: '/topics/' + topic.id + '/relative_numbers.json?network=' + topicsString,\n      success: successCallback,\n      error: function error() {} });\n\n  },\n  selectEdgeOnClickHandler: function selectEdgeOnClickHandler(adj, e) {\n    if (_Visualize2.default.mGraph.busy) return;\n\n    var self = JIT;\n    var synapseText = adj.data.$synapses[0].attributes.desc;\n    // Copy synapse label to clipboard\n    if (e.button === 1 && e.ctrlKey && synapseText !== '') _clipboardJs2.default.copy(synapseText);\n\n    // catch right click on mac, which is often like ctrl+click\n    if (navigator.platform.indexOf('Mac') !== -1 && e.ctrlKey) {\n      self.selectEdgeOnRightClickHandler(adj, e);\n      return;\n    }\n\n    var check = self.nodeWasDoubleClicked();\n    if (check) {\n      self.edgeDoubleClickHandler(adj, e);\n      return;\n    } else {\n      // wait a certain length of time, then check again, then run this code\n      setTimeout(function () {\n        if (!JIT.nodeWasDoubleClicked()) {\n          var edgeAlreadySelected = _Selected2.default.Edges.indexOf(adj) !== -1;\n\n          if (!e.shiftKey) {\n            _Control2.default.deselectAllNodes();\n            _Control2.default.deselectAllEdges();\n          }\n\n          if (edgeAlreadySelected) {\n            _Control2.default.deselectEdge(adj);\n          } else {\n            _Control2.default.selectEdge(adj);\n          }\n\n          _Visualize2.default.mGraph.plot();\n        }\n      }, _Mouse2.default.DOUBLE_CLICK_TOLERANCE);\n    }\n  }, // selectEdgeOnClickHandler\n  selectEdgeOnRightClickHandler: function selectEdgeOnRightClickHandler(adj, e) {\n    // the 'node' variable is a JIT node, the one that was clicked on\n    // the 'e' variable is the click event\n\n    if (adj.getData('alpha') === 0) return; // don't do anything if the edge is filtered\n\n    e.preventDefault();\n    e.stopPropagation();\n\n    if (_Visualize2.default.mGraph.busy) return;\n\n    _Control2.default.selectEdge(adj);\n\n    // delete old right click menu\n    $('.rightclickmenu').remove();\n    // create new menu for clicked on node\n    var rightclickmenu = document.createElement('div');\n    rightclickmenu.className = 'rightclickmenu';\n    // prevent the custom context menu from immediately opening the default context menu as well\n    rightclickmenu.setAttribute('oncontextmenu', 'return false');\n\n    // add the proper options to the menu\n    var menustring = '<ul>';\n\n    var authorized = _Active2.default.Map && _Active2.default.Map.authorizeToEdit(_Active2.default.Mapper);\n\n    var disabled = authorized ? '' : 'disabled';\n\n    if (_Active2.default.Map) menustring += '<li class=\"rc-hide\"><div class=\"rc-icon\"></div>Hide until refresh<div class=\"rc-keyboard\">Ctrl+H</div></li>';\n    if (_Active2.default.Map && _Active2.default.Mapper) menustring += '<li class=\"rc-remove ' + disabled + '\"><div class=\"rc-icon\"></div>Remove from map<div class=\"rc-keyboard\">Ctrl+M</div></li>';\n    if (_Active2.default.Topic) menustring += '<li class=\"rc-remove\"><div class=\"rc-icon\"></div>Remove from view<div class=\"rc-keyboard\">Ctrl+M</div></li>';\n    if (_Active2.default.Map && _Active2.default.Mapper) menustring += '<li class=\"rc-delete ' + disabled + '\"><div class=\"rc-icon\"></div>Delete<div class=\"rc-keyboard\">Ctrl+D</div></li>';\n\n    if (_Active2.default.Map && _Active2.default.Mapper) menustring += '<li class=\"rc-spacer\"></li>';\n\n    if (_Active2.default.Mapper) {\n      var permOptions = (0, _outdent2.default)(_templateObject4);\n\n\n\n\n      menustring += '<li class=\"rc-permission\"><div class=\"rc-icon\"></div>Change permissions' + permOptions + '<div class=\"expandLi\"></div></li>';\n    }\n\n    menustring += '</ul>';\n    rightclickmenu.innerHTML = menustring;\n\n    // position the menu where the click happened\n    var position = {};\n    var RIGHTCLICK_WIDTH = 300;\n    var RIGHTCLICK_HEIGHT = 144; // this does vary somewhat, but we can use static\n    var SUBMENUS_WIDTH = 256;\n    var MAX_SUBMENU_HEIGHT = 270;\n    var windowWidth = $(window).width();\n    var windowHeight = $(window).height();\n\n    if (windowWidth - e.clientX < SUBMENUS_WIDTH) {\n      position.right = windowWidth - e.clientX;\n      $(rightclickmenu).addClass('moveMenusToLeft');\n    } else if (windowWidth - e.clientX < RIGHTCLICK_WIDTH) {\n      position.right = windowWidth - e.clientX;\n    } else position.left = e.clientX;\n\n    if (windowHeight - e.clientY < MAX_SUBMENU_HEIGHT) {\n      position.bottom = windowHeight - e.clientY;\n      $(rightclickmenu).addClass('moveMenusUp');\n    } else if (windowHeight - e.clientY < RIGHTCLICK_HEIGHT + MAX_SUBMENU_HEIGHT) {\n      position.top = e.clientY;\n      $(rightclickmenu).addClass('moveMenusUp');\n    } else position.top = e.clientY;\n\n    $(rightclickmenu).css(position);\n\n    // add the menu to the page\n    $('#wrapper').append(rightclickmenu);\n\n    // attach events to clicks on the list items\n\n    // delete the selected things from the database\n    if (authorized) {\n      $('.rc-delete').click(function () {\n        $('.rightclickmenu').remove();\n        _Control2.default.deleteSelected();\n      });\n    }\n\n    // remove the selected things from the map\n    if (authorized) {\n      $('.rc-remove').click(function () {\n        $('.rightclickmenu').remove();\n        _Control2.default.removeSelectedEdges();\n        _Control2.default.removeSelectedNodes();\n      });\n    }\n\n    // hide selected nodes and synapses until refresh\n    $('.rc-hide').click(function () {\n      $('.rightclickmenu').remove();\n      _Control2.default.hideSelectedEdges();\n      _Control2.default.hideSelectedNodes();\n    });\n\n    // change the permission of all the selected nodes and synapses that you were the originator of\n    $('.rc-permission li').click(function () {\n      $('.rightclickmenu').remove();\n      // $(this).text() will be 'commons' 'public' or 'private'\n      _Control2.default.updateSelectedPermissions($(this).text());\n    });\n  }, // selectEdgeOnRightClickHandler\n  SmoothPanning: function SmoothPanning() {\n    var sx = _Visualize2.default.mGraph.canvas.scaleOffsetX;\n    var sy = _Visualize2.default.mGraph.canvas.scaleOffsetY;\n    var yVelocity = _Mouse2.default.changeInY; // initial y velocity\n    var xVelocity = _Mouse2.default.changeInX; // initial x velocity\n    var easing = 1; // frictional value\n\n    window.clearInterval(panningInt);\n    panningInt = setInterval(function () {\n      myTimer();\n    }, 1);\n\n    function myTimer() {\n      _Visualize2.default.mGraph.canvas.translate(xVelocity * easing * 1 / sx, yVelocity * easing * 1 / sy);\n      $(document).trigger(JIT.events.pan);\n      easing = easing * 0.75;\n\n      if (easing < 0.1) window.clearInterval(panningInt);\n    }\n  }, // SmoothPanning\n  renderMidArrow: function renderMidArrow(from, to, dim, swap, canvas, placement, newSynapse) {\n    var ctx = canvas.getCtx();\n    // invert edge direction\n    if (swap) {\n      var tmp = from;\n      from = to;\n      to = tmp;\n    }\n    // vect represents a line from tip to tail of the arrow\n    var vect = new _JIT2.default.Complex(to.x - from.x, to.y - from.y);\n    // scale it\n    vect.$scale(dim / vect.norm());\n    // compute the midpoint of the edge line\n    var newX = (to.x - from.x) * placement + from.x;\n    var newY = (to.y - from.y) * placement + from.y;\n    var midPoint = new _JIT2.default.Complex(newX, newY);\n\n    // move midpoint by half the \"length\" of the arrow so the arrow is centered on the midpoint\n    var arrowPoint = new _JIT2.default.Complex(vect.x / 0.7 + midPoint.x, vect.y / 0.7 + midPoint.y);\n    // compute the tail intersection point with the edge line\n    var intermediatePoint = new _JIT2.default.Complex(arrowPoint.x - vect.x, arrowPoint.y - vect.y);\n    // vector perpendicular to vect\n    var normal = new _JIT2.default.Complex(-vect.y / 2, vect.x / 2);\n    var v1 = intermediatePoint.add(normal);\n    var v2 = intermediatePoint.$add(normal.$scale(-1));\n\n    if (newSynapse) {\n      ctx.strokeStyle = '#4fc059';\n      ctx.lineWidth = 2;\n      ctx.globalAlpha = 1;\n    }\n    ctx.beginPath();\n    ctx.moveTo(from.x, from.y);\n    ctx.lineTo(to.x, to.y);\n    ctx.stroke();\n    ctx.beginPath();\n    ctx.moveTo(v1.x, v1.y);\n    ctx.lineTo(arrowPoint.x, arrowPoint.y);\n    ctx.lineTo(v2.x, v2.y);\n    ctx.stroke();\n  }, // renderMidArrow\n  renderEdgeArrows: function renderEdgeArrows(edgeHelper, adj, synapse, canvas) {\n    var self = JIT;\n\n    var directionCat = synapse.get('category');\n    var direction = synapse.getDirection();\n\n    var pos = adj.nodeFrom.pos.getc(true);\n    var posChild = adj.nodeTo.pos.getc(true);\n\n    // plot arrow edge\n    if (!direction) {\n      // render nothing for this arrow if the direction couldn't be retrieved\n    } else if (directionCat === 'none') {\n      edgeHelper.line.render({\n        x: pos.x,\n        y: pos.y },\n      {\n        x: posChild.x,\n        y: posChild.y },\n      canvas);\n    } else if (directionCat === 'both') {\n      self.renderMidArrow({\n        x: pos.x,\n        y: pos.y },\n      {\n        x: posChild.x,\n        y: posChild.y },\n      13, true, canvas, 0.7);\n      self.renderMidArrow({\n        x: pos.x,\n        y: pos.y },\n      {\n        x: posChild.x,\n        y: posChild.y },\n      13, false, canvas, 0.7);\n    } else if (directionCat === 'from-to') {\n      var inv = direction[0] !== adj.nodeFrom.id;\n      self.renderMidArrow({\n        x: pos.x,\n        y: pos.y },\n      {\n        x: posChild.x,\n        y: posChild.y },\n      13, inv, canvas, 0.7);\n      self.renderMidArrow({\n        x: pos.x,\n        y: pos.y },\n      {\n        x: posChild.x,\n        y: posChild.y },\n      13, inv, canvas, 0.3);\n    }\n  }, // renderEdgeArrows\n  zoomIn: function zoomIn(event) {\n    _Visualize2.default.mGraph.canvas.scale(1.25, 1.25);\n    $(document).trigger(JIT.events.zoom, [event]);\n  },\n  zoomOut: function zoomOut(event) {\n    _Visualize2.default.mGraph.canvas.scale(0.8, 0.8);\n    $(document).trigger(JIT.events.zoom, [event]);\n  },\n  centerMap: function centerMap(canvas) {\n    var offsetScale = canvas.scaleOffsetX;\n\n    canvas.scale(1 / offsetScale, 1 / offsetScale);\n\n    var offsetX = canvas.translateOffsetX;\n    var offsetY = canvas.translateOffsetY;\n\n    canvas.translate(-1 * offsetX, -1 * offsetY);\n  },\n  zoomToBox: function zoomToBox(event) {\n    var sX = _Mouse2.default.boxStartCoordinates.x;\n    var sY = _Mouse2.default.boxStartCoordinates.y;\n    var eX = _Mouse2.default.boxEndCoordinates.x;\n    var eY = _Mouse2.default.boxEndCoordinates.y;\n\n    var canvas = _Visualize2.default.mGraph.canvas;\n    JIT.centerMap(canvas);\n\n    var height = $(document).height();\n    var width = $(document).width();\n\n    var spanX = Math.abs(sX - eX);\n    var spanY = Math.abs(sY - eY);\n    var ratioX = width / spanX;\n    var ratioY = height / spanY;\n\n    var newRatio = Math.min(ratioX, ratioY);\n\n    if (canvas.scaleOffsetX * newRatio <= 5 && canvas.scaleOffsetX * newRatio >= 0.2) {\n      canvas.scale(newRatio, newRatio);\n    } else if (canvas.scaleOffsetX * newRatio > 5) {\n      newRatio = 5 / canvas.scaleOffsetX;\n      canvas.scale(newRatio, newRatio);\n    } else {\n      newRatio = 0.2 / canvas.scaleOffsetX;\n      canvas.scale(newRatio, newRatio);\n    }\n\n    var cogX = (sX + eX) / 2;\n    var cogY = (sY + eY) / 2;\n\n    canvas.translate(-1 * cogX, -1 * cogY);\n    $(document).trigger(JIT.events.zoom, [event]);\n\n    _Mouse2.default.boxStartCoordinates = false;\n    _Mouse2.default.boxEndCoordinates = false;\n    _Visualize2.default.mGraph.plot();\n  },\n  zoomExtents: function zoomExtents(event, canvas, denySelected) {\n    JIT.centerMap(canvas);\n    var height = canvas.getSize().height;\n    var width = canvas.getSize().width;\n    var maxX = void 0;\n    var maxY = void 0;\n    var minX = void 0;\n    var minY = void 0;\n    var counter = 0;\n\n    var nodes = void 0;\n    if (!denySelected && _Selected2.default.Nodes.length > 0) {\n      nodes = _Selected2.default.Nodes;\n    } else {\n      nodes = (0, _values3.default)(_Visualize2.default.mGraph.graph.nodes);\n    }\n\n    if (nodes.length > 1) {\n      nodes.forEach(function (n) {\n        var x = n.pos.x;\n        var y = n.pos.y;\n\n        if (counter === 0 && n.getData('alpha') === 1) {\n          maxX = x;\n          minX = x;\n          maxY = y;\n          minY = y;\n        }\n\n        var arrayOfLabelLines = _Util2.default.splitLine(n.name, 25).split('\\n');\n        var dim = n.getData('dim');\n        var ctx = canvas.getCtx();\n\n        var height = 25 * arrayOfLabelLines.length;\n\n        var lineWidths = [];\n        for (var index = 0; index < arrayOfLabelLines.length; ++index) {\n          lineWidths.push(ctx.measureText(arrayOfLabelLines[index]).width);\n        }\n        var width = Math.max.apply(null, lineWidths) + 8;\n\n        // only adjust these values if the node is not filtered\n        if (n.getData('alpha') === 1) {\n          maxX = Math.max(x + width / 2, maxX);\n          maxY = Math.max(y + n.getData('height') + 5 + height, maxY);\n          minX = Math.min(x - width / 2, minX);\n          minY = Math.min(y - dim, minY);\n\n          counter++;\n        }\n      });\n\n      var spanX = maxX - minX;\n      var spanY = maxY - minY;\n      var ratioX = spanX / width;\n      var ratioY = spanY / height;\n\n      var cogX = (maxX + minX) / 2;\n      var cogY = (maxY + minY) / 2;\n\n      canvas.translate(-1 * cogX, -1 * cogY);\n\n      var newRatio = Math.max(ratioX, ratioY);\n      var scaleMultiplier = 1 / newRatio * 0.9;\n\n      if (canvas.scaleOffsetX * scaleMultiplier <= 3 && canvas.scaleOffsetX * scaleMultiplier >= 0.2) {\n        canvas.scale(scaleMultiplier, scaleMultiplier);\n      } else if (canvas.scaleOffsetX * scaleMultiplier > 3) {\n        scaleMultiplier = 3 / canvas.scaleOffsetX;\n        canvas.scale(scaleMultiplier, scaleMultiplier);\n      } else {\n        scaleMultiplier = 0.2 / canvas.scaleOffsetX;\n        canvas.scale(scaleMultiplier, scaleMultiplier);\n      }\n\n      $(document).trigger(JIT.events.zoom, [event]);\n    } else if (nodes.length === 1) {\n      nodes.forEach(function (n) {\n        var x = n.pos.x;\n        var y = n.pos.y;\n\n        canvas.translate(-1 * x, -1 * y);\n        $(document).trigger(JIT.events.zoom, [event]);\n      });\n    }\n  } };exports.default =\n\n\nJIT;//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"355.js","sources":["frontend/src/Metamaps/JIT.js"],"sourcesContent":["/* global $, Image, CanvasLoader */\n\nimport _ from 'lodash'\nimport outdent from 'outdent'\n\nimport $jit from '../patched/JIT'\n\nimport Active from './Active'\nimport Control from './Control'\nimport Create from './Create'\nimport DataModel from './DataModel'\nimport Engine from './Engine'\nimport Filter from './Filter'\nimport GlobalUI from './GlobalUI'\nimport Map from './Map'\nimport Mouse from './Mouse'\nimport Selected from './Selected'\nimport Settings from './Settings'\nimport Synapse from './Synapse'\nimport SynapseCard from './SynapseCard'\nimport Topic from './Topic'\nimport TopicCard from './TopicCard'\nimport Util from './Util'\nimport Visualize from './Visualize'\nimport clipboard from 'clipboard-js'\n\nlet panningInt\n\nconst JIT = {\n  tempInit: false,\n  tempNode: null,\n  tempNode2: null,\n  mouseDownPix: {},\n  dragFlag: 0,\n  dragTolerance: 0,\n  virtualPointer: {},\n\n  events: {\n    topicDrag: 'Metamaps:JIT:events:topicDrag',\n    pan: 'Metamaps:JIT:events:pan',\n    zoom: 'Metamaps:JIT:events:zoom',\n    animationDone: 'Metamaps:JIT:events:animationDone'\n  },\n  vizData: [], // contains the visualization-compatible graph\n  /**\n   * This method will bind the event handlers it is interested and initialize the class.\n   */\n  init: function(serverData) {\n    const self = JIT\n\n    $('.zoomIn').click(self.zoomIn)\n    $('.zoomOut').click(self.zoomOut)\n\n    const zoomExtents = function(event) {\n      self.zoomExtents(event, Visualize.mGraph.canvas)\n    }\n    $('.zoomExtents').click(zoomExtents)\n\n    $('.takeScreenshot').click(Map.exportImage)\n\n    self.topicDescImage = new Image()\n    self.topicDescImage.src = serverData['topic_description_signifier.png']\n\n    self.topicLinkImage = new Image()\n    self.topicLinkImage.src = serverData['topic_link_signifier.png']\n  },\n  /**\n   * convert our topic JSON into something JIT can use\n   */\n  convertModelsToJIT: function(topics, synapses) {\n    const jitReady = []\n\n    const synapsesToRemove = []\n    let mapping\n    let node\n    const nodes = {}\n    let existingEdge\n    let edge\n    const edges = []\n\n    topics.each(function(t) {\n      node = t.createNode()\n      nodes[node.id] = node\n    })\n    synapses.each(function(s) {\n      edge = s.createEdge()\n\n      if (topics.get(s.get('topic1_id')) === undefined || topics.get(s.get('topic2_id')) === undefined) {\n        // this means it's an invalid synapse\n        synapsesToRemove.push(s)\n      } else if (nodes[edge.nodeFrom] && nodes[edge.nodeTo]) {\n        existingEdge = _.find(edges, {\n          nodeFrom: edge.nodeFrom,\n          nodeTo: edge.nodeTo\n        }) ||\n        _.find(edges, {\n          nodeFrom: edge.nodeTo,\n          nodeTo: edge.nodeFrom\n        })\n\n        if (existingEdge) {\n          // for when you're dealing with multiple relationships between the same two topics\n          if (Active.Map) {\n            mapping = s.getMapping()\n            existingEdge.data['$mappingIDs'].push(mapping.id)\n          }\n          existingEdge.data['$synapseIDs'].push(s.id)\n        } else {\n          // for when you're dealing with a topic that has relationships to many different nodes\n          nodes[edge.nodeFrom].adjacencies.push(edge)\n          edges.push(edge)\n        }\n      }\n    })\n\n    _.each(nodes, function(node) {\n      jitReady.push(node)\n    })\n\n    return [jitReady, synapsesToRemove]\n  },\n  prepareVizData: function() {\n    const self = JIT\n    let mapping\n\n    // reset/empty vizData\n    self.vizData = []\n    Visualize.loadLater = false\n\n    const results = self.convertModelsToJIT(DataModel.Topics, DataModel.Synapses)\n\n    self.vizData = results[0]\n\n    // clean up the synapses array in case of any faulty data\n    _.each(results[1], function(synapse) {\n      mapping = synapse.getMapping()\n      DataModel.Synapses.remove(synapse)\n      if (DataModel.Mappings) DataModel.Mappings.remove(mapping)\n    })\n\n    // set up addTopic instructions in case they delete all the topics\n    // i.e. if there are 0 topics at any time, it should have instructions again\n    $('#instructions div').hide()\n    if (Active.Map && Active.Map.authorizeToEdit(Active.Mapper)) {\n      $('#instructions div.addTopic').show()\n    }\n\n    if (self.vizData.length === 0) {\n      GlobalUI.showDiv('#instructions')\n      Visualize.loadLater = true\n    } else {\n      GlobalUI.hideDiv('#instructions')\n    }\n\n    Visualize.render()\n  }, // prepareVizData\n  edgeRender: function(adj, canvas) {\n    // get nodes cartesian coordinates\n    const pos = adj.nodeFrom.pos.getc(true)\n    const posChild = adj.nodeTo.pos.getc(true)\n\n    let synapse\n    if (adj.getData('displayIndex')) {\n      synapse = adj.getData('synapses')[adj.getData('displayIndex')]\n      if (!synapse) {\n        delete adj.data.$displayIndex\n        synapse = adj.getData('synapses')[0]\n      }\n    } else {\n      synapse = adj.getData('synapses')[0]\n    }\n\n    if (!synapse) return // this means there are no corresponding synapses for\n    // this edge, don't render it\n\n    // label placement on edges\n    if (canvas.denySelected) {\n      const color = Settings.colors.synapses.normal\n      canvas.getCtx().fillStyle = canvas.getCtx().strokeStyle = color\n    }\n    JIT.renderEdgeArrows($jit.Graph.Plot.edgeHelper, adj, synapse, canvas)\n\n    // check for edge label in data\n    let desc = synapse.get('desc')\n\n    const showDesc = adj.getData('showDesc')\n\n    const drawSynapseCount = function(context, x, y, count) {\n      /*\n      circle size: 16x16px\n      positioning: overlay and center on top right corner of synapse label - 8px left and 8px down\n      color: #dab539\n      border color: #424242\n      border size: 1.5px\n      font: DIN medium\n      font-size: 14pt\n      font-color: #424242\n      */\n      context.beginPath()\n      context.arc(x, y, 8, 0, 2 * Math.PI, false)\n      context.fillStyle = '#DAB539'\n      context.strokeStyle = '#424242'\n      context.lineWidth = 1.5\n      context.closePath()\n      context.fill()\n      context.stroke()\n\n      // add the synapse count\n      context.fillStyle = '#424242'\n      context.textAlign = 'center'\n      context.font = '14px din-medium'\n\n      context.fillText(count, x, y + 5)\n    }\n\n    if (!canvas.denySelected && desc !== '' && showDesc) {\n      // '&amp;' to '&'\n      desc = Util.decodeEntities(desc)\n\n      // now adjust the label placement\n      const ctx = canvas.getCtx()\n      ctx.font = 'bold 14px arial'\n      ctx.fillStyle = '#FFF'\n      ctx.textBaseline = 'alphabetic'\n\n      const arrayOfLabelLines = Util.splitLine(desc, 25).split('\\n')\n      let lineWidths = []\n      for (let index = 0; index < arrayOfLabelLines.length; ++index) {\n        lineWidths.push(ctx.measureText(arrayOfLabelLines[index]).width)\n      }\n      const width = Math.max.apply(null, lineWidths) + 16\n      const height = (16 * arrayOfLabelLines.length) + 8\n\n      const x = (pos.x + posChild.x - width) / 2\n      const y = ((pos.y + posChild.y) / 2) - height / 2\n\n      const radius = 5\n\n      // render background\n      ctx.beginPath()\n      ctx.moveTo(x + radius, y)\n      ctx.lineTo(x + width - radius, y)\n      ctx.quadraticCurveTo(x + width, y, x + width, y + radius)\n      ctx.lineTo(x + width, y + height - radius)\n      ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height)\n      ctx.lineTo(x + radius, y + height)\n      ctx.quadraticCurveTo(x, y + height, x, y + height - radius)\n      ctx.lineTo(x, y + radius)\n      ctx.quadraticCurveTo(x, y, x + radius, y)\n      ctx.closePath()\n      ctx.fill()\n\n      // get number of synapses\n      const synapseNum = adj.getData('synapses').length\n\n      // render text\n      ctx.fillStyle = '#424242'\n      ctx.textAlign = 'center'\n      for (let index = 0; index < arrayOfLabelLines.length; ++index) {\n        ctx.fillText(arrayOfLabelLines[index], x + (width / 2), y + 18 + (16 * index))\n      }\n\n      if (synapseNum > 1) {\n        drawSynapseCount(ctx, x + width, y, synapseNum)\n      }\n    } else if (!canvas.denySelected && showDesc) {\n      // get number of synapses\n      const synapseNum = adj.getData('synapses').length\n\n      if (synapseNum > 1) {\n        const ctx = canvas.getCtx()\n        const x = (pos.x + posChild.x) / 2\n        const y = (pos.y + posChild.y) / 2\n        drawSynapseCount(ctx, x, y, synapseNum)\n      }\n    }\n  }, // edgeRender\n  ForceDirected: {\n    animateSavedLayout: {\n      modes: ['linear'],\n      // TODO fix tests so we don't need _.get\n      transition: _.get($jit, 'Trans.Quad.easeInOut'),\n      duration: 800,\n      onComplete: function() {\n        Visualize.mGraph.busy = false\n        $(document).trigger(JIT.events.animationDone)\n      }\n    },\n    animateFDLayout: {\n      modes: ['linear'],\n      // TODO fix tests so we don't need _.get\n      transition: _.get($jit, 'Trans.Elastic.easeOut'),\n      duration: 800,\n      onComplete: function() {\n        Visualize.mGraph.busy = false\n      }\n    },\n    graphSettings: {\n      // id of the visualization container\n      injectInto: 'infovis',\n      // Enable zooming and panning\n      // by scrolling and DnD\n      Navigation: {\n        enable: true,\n        // Enable panning events only if we're dragging the empty\n        // canvas (and not a node).\n        panning: 'avoid nodes',\n        zooming: 28 // zoom speed. higher is more sensible\n      },\n      // Change node and edge styles such as\n      // color and width.\n      // These properties are also set per node\n      // with dollar prefixed data-properties in the\n      // JSON structure.\n      Node: {\n        overridable: true,\n        color: '#2D6A5D',\n        type: 'customNode',\n        dim: 25\n      },\n      Edge: {\n        overridable: true,\n        color: Settings.colors.synapses.normal,\n        type: 'customEdge',\n        lineWidth: 2,\n        alpha: 1\n      },\n      // Native canvas text styling\n      Label: {\n        type: 'Native', // Native or HTML\n        size: 20,\n        family: 'arial',\n        textBaseline: 'alphabetic',\n        color: Settings.colors.labels.text\n      },\n      // Add Tips\n      Tips: {\n        enable: false,\n        onShow: function(tip, node) {}\n      },\n      // Add node events\n      Events: {\n        enable: true,\n        enableForEdges: true,\n        onMouseMove: function(node, eventInfo, e) {\n          JIT.onMouseMoveHandler(node, eventInfo, e)\n        // console.log('called mouse move handler')\n        },\n        // Update node positions when dragged\n        onDragMove: function(node, eventInfo, e) {\n          JIT.onDragMoveTopicHandler(node, eventInfo, e)\n        // console.log('called drag move handler')\n        },\n        onDragEnd: function(node, eventInfo, e) {\n          JIT.onDragEndTopicHandler(node, eventInfo, e, false)\n        // console.log('called drag end handler')\n        },\n        onDragCancel: function(node, eventInfo, e) {\n          JIT.onDragCancelHandler(node, eventInfo, e, false)\n        },\n        // Implement the same handler for touchscreens\n        onTouchStart: function(node, eventInfo, e) {},\n        // Implement the same handler for touchscreens\n        onTouchMove: function(node, eventInfo, e) {\n          JIT.onDragMoveTopicHandler(node, eventInfo, e)\n        },\n        // Implement the same handler for touchscreens\n        onTouchEnd: function(node, eventInfo, e) {},\n        // Implement the same handler for touchscreens\n        onTouchCancel: function(node, eventInfo, e) {},\n        // Add also a click handler to nodes\n        onClick: function(node, eventInfo, e) {\n          // remove the rightclickmenu\n          $('.rightclickmenu').remove()\n\n          if (Mouse.boxStartCoordinates) {\n            if (e.ctrlKey) {\n              Visualize.mGraph.busy = false\n              Mouse.boxEndCoordinates = eventInfo.getPos()\n\n              const bS = Mouse.boxStartCoordinates\n              const bE = Mouse.boxEndCoordinates\n              if (Math.abs(bS.x - bE.x) > 20 && Math.abs(bS.y - bE.y) > 20) {\n                JIT.zoomToBox(e)\n                return\n              } else {\n                Mouse.boxStartCoordinates = null\n                Mouse.boxEndCoordinates = null\n              }\n            }\n\n            if (e.shiftKey) {\n              Visualize.mGraph.busy = false\n              Mouse.boxEndCoordinates = eventInfo.getPos()\n              JIT.selectWithBox(e)\n              return\n            }\n          }\n\n          if (e.target.id !== 'infovis-canvas') return false\n\n          // clicking on a edge, node, or clicking on blank part of canvas?\n          if (node.nodeFrom) {\n            JIT.selectEdgeOnClickHandler(node, e)\n          } else if (node && !node.nodeFrom) {\n            JIT.selectNodeOnClickHandler(node, e)\n            Engine.setFocusNode(node)\n          } else {\n            JIT.canvasClickHandler(eventInfo.getPos(), e)\n          } // if\n        },\n        // Add also a click handler to nodes\n        onRightClick: function(node, eventInfo, e) {\n          // remove the rightclickmenu\n          $('.rightclickmenu').remove()\n\n          if (Mouse.boxStartCoordinates) {\n            Create.newSynapse.hide()\n            Visualize.mGraph.busy = false\n            Mouse.boxEndCoordinates = eventInfo.getPos()\n            JIT.selectWithBox(e)\n            return\n          }\n\n          if (e.target.id !== 'infovis-canvas') return false\n\n          // clicking on a edge, node, or clicking on blank part of canvas?\n          if (node.nodeFrom) {\n            JIT.selectEdgeOnRightClickHandler(node, e)\n          } else if (node && !node.nodeFrom) {\n            JIT.selectNodeOnRightClickHandler(node, e)\n          } else {\n            // right click open space\n            Create.newSynapse.hide()\n          }\n        }\n      },\n      // Number of iterations for the FD algorithm\n      iterations: 200,\n      // Edge length\n      levelDistance: 200\n    },\n    nodeSettings: {\n      'customNode': {\n        'render': function(node, canvas) {\n          const pos = node.pos.getc(true)\n          const dim = node.getData('dim')\n          const topic = node.getData('topic')\n          const metacode = topic ? topic.getMetacode() : false\n          const ctx = canvas.getCtx()\n\n          // if the topic is selected draw a circle around it\n          if (!canvas.denySelected && node.selected) {\n            ctx.beginPath()\n            ctx.arc(pos.x, pos.y, dim + 3, 0, 2 * Math.PI, false)\n            ctx.strokeStyle = Settings.colors.topics.selected\n            ctx.lineWidth = 2\n            ctx.stroke()\n          }\n\n          if (!metacode ||\n            !metacode.get('image') ||\n            !metacode.get('image').complete ||\n            (typeof metacode.get('image').naturalWidth !== 'undefined' &&\n            metacode.get('image').naturalWidth === 0)) {\n            ctx.beginPath()\n            ctx.arc(pos.x, pos.y, dim, 0, 2 * Math.PI, false)\n            ctx.fillStyle = '#B6B2FD'\n            ctx.fill()\n          } else {\n            ctx.drawImage(metacode.get('image'), pos.x - dim, pos.y - dim, dim * 2, dim * 2)\n          }\n\n          // if the topic has a link, draw a small image to indicate that\n          const hasLink = topic && topic.get('link') !== '' && topic.get('link') !== null\n          const linkImage = JIT.topicLinkImage\n          const linkImageLoaded = linkImage.complete ||\n          (typeof linkImage.naturalWidth !== 'undefined' &&\n          linkImage.naturalWidth !== 0)\n          if (hasLink && linkImageLoaded) {\n            ctx.drawImage(linkImage, pos.x - dim - 8, pos.y - dim - 8, 16, 16)\n          }\n\n          // if the topic has a desc, draw a small image to indicate that\n          const hasDesc = topic && topic.get('desc') !== '' && topic.get('desc') !== null\n          const descImage = JIT.topicDescImage\n          const descImageLoaded = descImage.complete ||\n          (typeof descImage.naturalWidth !== 'undefined' &&\n          descImage.naturalWidth !== 0)\n          if (hasDesc && descImageLoaded) {\n            ctx.drawImage(descImage, pos.x + dim - 8, pos.y - dim - 8, 16, 16)\n          }\n        },\n        'contains': function(node, pos) {\n          const npos = node.pos.getc(true)\n          const dim = node.getData('dim')\n          const arrayOfLabelLines = Util.splitLine(node.name, 25).split('\\n')\n          const ctx = Visualize.mGraph.canvas.getCtx()\n\n          const height = 25 * arrayOfLabelLines.length\n\n          let lineWidths = []\n          for (let index = 0; index < arrayOfLabelLines.length; ++index) {\n            lineWidths.push(ctx.measureText(arrayOfLabelLines[index]).width)\n          }\n          const width = Math.max.apply(null, lineWidths) + 8\n          const labely = npos.y + node.getData('height') + 5 + height / 2\n\n          const overLabel = this.nodeHelper.rectangle.contains({\n            x: npos.x,\n            y: labely\n          }, pos, width, height)\n\n          return this.nodeHelper.circle.contains(npos, pos, dim) || overLabel\n        }\n      }\n    },\n    edgeSettings: {\n      'customEdge': {\n        'render': function(adj, canvas) {\n          JIT.edgeRender(adj, canvas)\n        },\n        'contains': function(adj, pos) {\n          const from = adj.nodeFrom.pos.getc()\n          const to = adj.nodeTo.pos.getc()\n\n          // this fixes an issue where when edges are perfectly horizontal or perfectly vertical\n          // it becomes incredibly difficult to hover over them\n          if (-1 < pos.x && pos.x < 1) pos.x = 0\n          if (-1 < pos.y && pos.y < 1) pos.y = 0\n\n          return $jit.Graph.Plot.edgeHelper.line.contains(from, to, pos, adj.Edge.epsilon + 5)\n        }\n      }\n    }\n  }, // ForceDirected\n  ForceDirected3D: {\n    animate: {\n      modes: ['linear'],\n      // TODO fix tests so we don't need _.get\n      transition: _.get($jit, 'Trans.Elastic.easeOut'),\n      duration: 2500,\n      onComplete: function() {\n        Visualize.mGraph.busy = false\n      }\n    },\n    graphSettings: {\n      // id of the visualization container\n      injectInto: 'infovis',\n      type: '3D',\n      Scene: {\n        Lighting: {\n          enable: false,\n          ambient: [0.5, 0.5, 0.5],\n          directional: {\n            direction: {\n              x: 1,\n              y: 0,\n              z: -1\n            },\n            color: [0.9, 0.9, 0.9]\n          }\n        }\n      },\n      // Enable zooming and panning\n      // by scrolling and DnD\n      Navigation: {\n        enable: false,\n        // Enable panning events only if we're dragging the empty\n        // canvas (and not a node).\n        panning: 'avoid nodes',\n        zooming: 10 // zoom speed. higher is more sensible\n      },\n      // Change node and edge styles such as\n      // color and width.\n      // These properties are also set per node\n      // with dollar prefixed data-properties in the\n      // JSON structure.\n      Node: {\n        overridable: true,\n        type: 'sphere',\n        dim: 15,\n        color: '#ffffff'\n      },\n      Edge: {\n        overridable: false,\n        type: 'tube',\n        color: '#111',\n        lineWidth: 3\n      },\n      // Native canvas text styling\n      Label: {\n        type: 'HTML', // Native or HTML\n        size: 10,\n        style: 'bold'\n      },\n      // Add node events\n      Events: {\n        enable: true,\n        type: 'Native',\n        i: 0,\n        onMouseMove: function(node, eventInfo, e) {\n          // if(this.i++ % 3) return\n          const pos = eventInfo.getPos()\n          Visualize.cameraPosition.x += (pos.x - Visualize.cameraPosition.x) * 0.5\n          Visualize.cameraPosition.y += (-pos.y - Visualize.cameraPosition.y) * 0.5\n          Visualize.mGraph.plot()\n        },\n        onMouseWheel: function(delta) {\n          Visualize.cameraPosition.z += -delta * 20\n          Visualize.mGraph.plot()\n        },\n        onClick: function() {}\n      },\n      // Number of iterations for the FD algorithm\n      iterations: 200,\n      // Edge length\n      levelDistance: 100\n    },\n    nodeSettings: {\n\n    },\n    edgeSettings: {\n\n    }\n  }, // ForceDirected3D\n  RGraph: {\n    animate: {\n      modes: ['polar'],\n      duration: 800,\n      onComplete: function() {\n        Visualize.mGraph.busy = false\n      }\n    },\n    // this will just be used to patch the ForceDirected graphsettings with the few things which actually differ\n    background: {\n      levelDistance: 200,\n      numberOfCircles: 4,\n      CanvasStyles: {\n        strokeStyle: '#333',\n        lineWidth: 1.5\n      }\n    },\n    levelDistance: 200\n  },\n  onMouseEnter: function(edge) {\n    const filtered = edge.getData('alpha') === 0\n\n    // don't do anything if the edge is filtered\n    // or if the canvas is animating\n    if (filtered || Visualize.mGraph.busy) return\n\n    $('canvas').css('cursor', 'pointer')\n    const edgeIsSelected = Selected.Edges.indexOf(edge)\n    // following if statement only executes if the edge being hovered over is not selected\n    if (edgeIsSelected === -1) {\n      edge.setData('showDesc', true, 'current')\n    }\n\n    edge.setDataset('end', {\n      lineWidth: 4\n    })\n    Visualize.mGraph.fx.animate({\n      modes: ['edge-property:lineWidth'],\n      duration: 100\n    })\n    Visualize.mGraph.plot()\n  }, // onMouseEnter\n  onMouseLeave: function(edge) {\n    if (edge.getData('alpha') === 0) return // don't do anything if the edge is filtered\n    $('canvas').css('cursor', 'default')\n    const edgeIsSelected = Selected.Edges.indexOf(edge)\n    // following if statement only executes if the edge being hovered over is not selected\n    if (edgeIsSelected === -1) {\n      edge.setData('showDesc', false, 'current')\n    }\n\n    edge.setDataset('end', {\n      lineWidth: 2\n    })\n    Visualize.mGraph.fx.animate({\n      modes: ['edge-property:lineWidth'],\n      duration: 100\n    })\n    Visualize.mGraph.plot()\n  }, // onMouseLeave\n  onMouseMoveHandler: function(_node, eventInfo, e) {\n    const self = JIT\n\n    if (Visualize.mGraph.busy) return\n\n    const node = eventInfo.getNode()\n    const edge = eventInfo.getEdge()\n\n    // if we're on top of a node object, act like there aren't edges under it\n    if (node !== false) {\n      if (Mouse.edgeHoveringOver) {\n        self.onMouseLeave(Mouse.edgeHoveringOver)\n      }\n      $('canvas').css('cursor', 'pointer')\n      return\n    }\n\n    if (edge === false && Mouse.edgeHoveringOver !== false) {\n      // mouse not on an edge, but we were on an edge previously\n      self.onMouseLeave(Mouse.edgeHoveringOver)\n    } else if (edge !== false && Mouse.edgeHoveringOver === false) {\n      // mouse is on an edge, but there isn't a stored edge\n      self.onMouseEnter(edge)\n    } else if (edge !== false && Mouse.edgeHoveringOver !== edge) {\n      // mouse is on an edge, but a different edge is stored\n      self.onMouseLeave(Mouse.edgeHoveringOver)\n      self.onMouseEnter(edge)\n    }\n\n    // could be false\n    Mouse.edgeHoveringOver = edge\n\n    if (!node && !edge) {\n      $('canvas').css('cursor', 'default')\n    }\n  }, // onMouseMoveHandler\n  enterKeyHandler: function(e) {\n    const creatingMap = GlobalUI.lightbox\n    if (creatingMap === 'newmap' || creatingMap === 'forkmap') {\n      GlobalUI.CreateMap.submit()\n    } else if (e.target.id === 'topic_name' && !Create.newTopic.metacodeSelectorOpen) {\n      Topic.createTopicLocally()\n    } else if (Create.newSynapse.beingCreated) {\n      Synapse.createSynapseLocally(Create.newSynapse.topic1id, Create.newSynapse.topic2id)\n      Engine.runLayout()\n      Create.newSynapse.hide()\n    }\n  }, // enterKeyHandler\n  escKeyHandler: function() {\n    Control.deselectAllEdges()\n    Control.deselectAllNodes()\n  }, // escKeyHandler\n  onDragMoveTopicHandler: function(node, eventInfo, e) {\n    var self = JIT\n\n    var authorized = Active.Map && Active.Map.authorizeToEdit(Active.Mapper)\n\n    if (node && !node.nodeFrom) {\n\n      const pos = eventInfo.getPos()\n      if ((e.button === 0 || e.buttons === 0) && authorized) {\n        // start synapse creation  ->second option is for firefox\n        if (JIT.tempInit === false) {\n          JIT.tempNode = node\n          JIT.tempInit = true\n          Create.newSynapse.hide()\n          // set the draw synapse start positions\n          Mouse.synapseStartCoordinates = []\n          if (Selected.Nodes.length) {\n            Selected.Nodes.forEach(n => {\n              Mouse.synapseStartCoordinates.push({\n                x: n.pos.getc().x,\n                y: n.pos.getc().y\n              })\n            })\n          }\n          else {\n            Mouse.synapseStartCoordinates = [{\n              x: node.pos.getc().x,\n              y: node.pos.getc().y\n            }]\n          }\n          Mouse.synapseEndCoordinates = {\n            x: pos.x,\n            y: pos.y\n          }\n        }\n        //\n        let temp = eventInfo.getNode()\n        if (temp !== false && temp.id !== node.id && Selected.Nodes.indexOf(temp) === -1) { // this means a Node has been returned\n          JIT.tempNode2 = temp\n          Mouse.synapseEndCoordinates = {\n            x: JIT.tempNode2.pos.getc().x,\n            y: JIT.tempNode2.pos.getc().y\n          }\n          // before making the highlighted one bigger, make sure all the others are regular size\n          Visualize.mGraph.graph.eachNode(function(n) {\n            n.setData('dim', 25, 'current')\n          })\n          temp.setData('dim', 35, 'current')\n        } else if (!temp) {\n          JIT.tempNode2 = null\n          Mouse.synapseEndCoordinates = {\n            x: pos.x,\n            y: pos.y\n          }\n          Visualize.mGraph.graph.eachNode(function(n) {\n            n.setData('dim', 25, 'current')\n          })\n        }\n      }\n    }\n    Visualize.mGraph.plot()\n  }, // onDragMoveTopicHandler\n  onDragCancelHandler: function(node, eventInfo, e) {\n    JIT.tempNode = null\n    if (JIT.tempNode2) JIT.tempNode2.setData('dim', 25, 'current')\n    JIT.tempNode2 = null\n    JIT.tempInit = false\n    // reset the draw synapse positions to false\n    Mouse.synapseStartCoordinates = []\n    Mouse.synapseEndCoordinates = null\n    Visualize.mGraph.plot()\n  }, // onDragCancelHandler\n  onDragEndTopicHandler: function(node, eventInfo, e) {\n    const self = JIT\n    const midpoint = {}\n    let pixelPos\n    let mapping\n\n    if (JIT.tempInit && JIT.tempNode2 === null) {\n      Mouse.synapseEndCoordinates = null\n    } else if (JIT.tempInit && JIT.tempNode2 !== null) {\n      // this means you want to create a synapse between two existing topics\n      Create.newSynapse.topic1id = JIT.tempNode.getData('topic').id\n      Create.newSynapse.topic2id = JIT.tempNode2.getData('topic').id\n      Create.newSynapse.node1 = JIT.tempNode\n      Create.newSynapse.node2 = JIT.tempNode2\n      JIT.tempNode2.setData('dim', 25, 'current')\n      midpoint.x = JIT.tempNode.pos.getc().x + (JIT.tempNode2.pos.getc().x - JIT.tempNode.pos.getc().x) / 2\n      midpoint.y = JIT.tempNode.pos.getc().y + (JIT.tempNode2.pos.getc().y - JIT.tempNode.pos.getc().y) / 2\n      pixelPos = Util.coordsToPixels(Visualize.mGraph, midpoint)\n      $('#new_synapse').css('left', pixelPos.x + 'px')\n      $('#new_synapse').css('top', pixelPos.y + 'px')\n      Create.newSynapse.open()\n      JIT.tempNode = null\n      JIT.tempNode2 = null\n      JIT.tempInit = false\n    }\n    Visualize.mGraph.plot()\n  }, // onDragEndTopicHandler\n  canvasClickHandler: function(canvasLoc, e) {\n    // grab the location and timestamp of the click\n    const storedTime = Mouse.lastCanvasClick\n    const now = Date.now() // not compatible with IE8 FYI\n    Mouse.lastCanvasClick = now\n\n    const authorized = Active.Map && Active.Map.authorizeToEdit(Active.Mapper)\n\n    if (now - storedTime < Mouse.DOUBLE_CLICK_TOLERANCE && !Mouse.didPan) {\n      // DOUBLE CLICK\n    } else if (!Mouse.didPan) {\n      // SINGLE CLICK, no pan\n      Filter.close()\n      TopicCard.hideCard()\n      SynapseCard.hideCard()\n      $('.rightclickmenu').remove()\n      // reset the draw synapse positions to false\n      Mouse.synapseStartCoordinates = []\n      Mouse.synapseEndCoordinates = null\n      JIT.tempInit = false\n      JIT.tempNode = null\n      JIT.tempNode2 = null\n      if (!e.ctrlKey && !e.shiftKey) {\n        Control.deselectAllEdges()\n        Control.deselectAllNodes()\n      }\n    } else {\n      // SINGLE CLICK, resulting from pan\n    }\n  }, // canvasClickHandler\n  updateTopicPositions: function(node, pos) {\n    const len = Selected.Nodes.length\n    // this is used to send nodes that are moving to\n    // other realtime collaborators on the same map\n    const positionsToSend = {}\n\n    // first define offset for each node\n    var xOffset = []\n    var yOffset = []\n    for (let i = 0; i < len; i += 1) {\n      const n = Selected.Nodes[i]\n      xOffset[i] = n.pos.getc().x - node.pos.getc().x\n      yOffset[i] = n.pos.getc().y - node.pos.getc().y\n    } // for\n\n    for (let i = 0; i < len; i += 1) {\n      const n = Selected.Nodes[i]\n      const x = pos.x + xOffset[i]\n      const y = pos.y + yOffset[i]\n      if (n.pos.rho || n.pos.rho === 0) {\n        // this means we're in topic view\n        const rho = Math.sqrt(x * x + y * y)\n        const theta = Math.atan2(y, x)\n        n.pos.setp(theta, rho)\n      } else {\n        n.pos.setc(x, y)\n      }\n\n      if (Active.Map) {\n        const topic = n.getData('topic')\n        // we use the topic ID not the node id\n        // because we can't depend on the node id\n        // to be the same as on other collaborators\n        // maps\n        positionsToSend[topic.id] = n.pos\n      }\n    } // for\n\n    if (Active.Map) {\n      $(document).trigger(JIT.events.topicDrag, [positionsToSend])\n    }\n  },\n\n  nodeDoubleClickHandler: function(node, e) {\n    TopicCard.showCard(node)\n  }, // nodeDoubleClickHandler\n  edgeDoubleClickHandler: function(adj, e) {\n    SynapseCard.showCard(adj, e)\n  }, // nodeDoubleClickHandler\n  nodeWasDoubleClicked: function() {\n    // grab the timestamp of the click\n    const storedTime = Mouse.lastNodeClick\n    const now = Date.now() // not compatible with IE8 FYI\n    Mouse.lastNodeClick = now\n\n    if (now - storedTime < Mouse.DOUBLE_CLICK_TOLERANCE) {\n      return true\n    } else {\n      return false\n    }\n  }, // nodeWasDoubleClicked\n  handleSelectionBeforeDragging: function(node, e) {\n    if (Selected.Nodes.length === 0) {\n      Control.selectNode(node, e)\n    }\n    if (Selected.Nodes.indexOf(node) === -1) {\n      if (e.shiftKey) {\n        Control.selectNode(node, e)\n      } else {\n        Control.deselectAllEdges()\n        Control.deselectAllNodes()\n        Control.selectNode(node, e)\n      }\n    }\n  }, //  handleSelectionBeforeDragging\n  getNodeXY: function(node) {\n    if (typeof node.pos.x === 'number' && typeof node.pos.y === 'number') {\n      return node.pos\n    } else if (typeof node.pos.theta === 'number' && typeof node.pos.rho === 'number') {\n      return new $jit.Polar(node.pos.theta, node.pos.rho).getc(true)\n    } else {\n      console.error('getNodeXY: unrecognized node pos format')\n      return {}\n    }\n  },\n  selectWithBox: function(e) {\n    const self = this\n    let sX = Mouse.boxStartCoordinates.x\n    let sY = Mouse.boxStartCoordinates.y\n    let eX = Mouse.boxEndCoordinates.x\n    let eY = Mouse.boxEndCoordinates.y\n\n    if (!e.shiftKey) {\n      Control.deselectAllNodes()\n      Control.deselectAllEdges()\n    }\n\n    // select all nodes that are within the box\n    Visualize.mGraph.graph.eachNode(function(n) {\n      const pos = self.getNodeXY(n)\n      const x = pos.x\n      const y = pos.y\n\n      // depending on which way the person dragged the box, check that\n      // x and y are between the start and end values of the box\n      if ((sX < x && x < eX && sY < y && y < eY) ||\n        (sX > x && x > eX && sY > y && y > eY) ||\n        (sX > x && x > eX && sY < y && y < eY) ||\n        (sX < x && x < eX && sY > y && y > eY)) {\n        if (e.shiftKey) {\n          if (n.selected) {\n            Control.deselectNode(n)\n          } else {\n            Control.selectNode(n, e)\n          }\n        } else {\n          Control.selectNode(n, e)\n        }\n      }\n    })\n\n    // Convert selection box coordinates to traditional coordinates (+,+) in upper right\n    sY = -1 * sY\n    eY = -1 * eY\n\n    const edgesToToggle = []\n    DataModel.Synapses.each(function(synapse) {\n      const e = synapse.get('edge')\n      if (edgesToToggle.indexOf(e) === -1) {\n        edgesToToggle.push(e)\n      }\n    })\n    edgesToToggle.forEach(function(edge) {\n      const fromNodePos = self.getNodeXY(edge.nodeFrom)\n      const fromNodeX = fromNodePos.x\n      const fromNodeY = -1 * fromNodePos.y\n      const toNodePos = self.getNodeXY(edge.nodeTo)\n      const toNodeX = toNodePos.x\n      const toNodeY = -1 * toNodePos.y\n\n      let maxX = fromNodeX\n      let maxY = fromNodeY\n      let minX = fromNodeX\n      let minY = fromNodeY\n\n      // Correct maxX, MaxY values\n      ;(toNodeX > maxX) ? (maxX = toNodeX) : (minX = toNodeX)\n      ;(toNodeY > maxY) ? (maxY = toNodeY) : (minY = toNodeY)\n\n      let maxBoxX = sX\n      let maxBoxY = sY\n      let minBoxX = sX\n      let minBoxY = sY\n\n      // Correct maxBoxX, maxBoxY values\n      ;(eX > maxBoxX) ? (maxBoxX = eX) : (minBoxX = eX)\n      ;(eY > maxBoxY) ? (maxBoxY = eY) : (minBoxY = eY)\n\n      // Find the slopes from the synapse fromNode to the 4 corners of the selection box\n      const slopes = []\n      slopes.push((sY - fromNodeY) / (sX - fromNodeX))\n      slopes.push((sY - fromNodeY) / (eX - fromNodeX))\n      slopes.push((eY - fromNodeY) / (eX - fromNodeX))\n      slopes.push((eY - fromNodeY) / (sX - fromNodeX))\n\n      let minSlope = slopes[0]\n      let maxSlope = slopes[0]\n      slopes.forEach(function(entry) {\n        if (entry > maxSlope) maxSlope = entry\n        if (entry < minSlope) minSlope = entry\n      })\n\n      // Find synapse-in-question's slope\n      const synSlope = (toNodeY - fromNodeY) / (toNodeX - fromNodeX)\n      const b = fromNodeY - synSlope * fromNodeX\n\n      // Use the selection box edges as test cases for synapse intersection\n      let testX = sX\n      let testY = synSlope * testX + b\n\n      let selectTest\n\n      if (testX >= minX && testX <= maxX && testY >= minY && testY <= maxY && testY >= minBoxY && testY <= maxBoxY) {\n        selectTest = true\n      }\n\n      testX = eX\n      testY = synSlope * testX + b\n\n      if (testX >= minX && testX <= maxX && testY >= minY && testY <= maxY && testY >= minBoxY && testY <= maxBoxY) {\n        selectTest = true\n      }\n\n      testY = sY\n      testX = (testY - b) / synSlope\n\n      if (testX >= minX && testX <= maxX && testY >= minY && testY <= maxY && testX >= minBoxX && testX <= maxBoxX) {\n        selectTest = true\n      }\n\n      testY = eY\n      testX = (testY - b) / synSlope\n\n      if (testX >= minX && testX <= maxX && testY >= minY && testY <= maxY && testX >= minBoxX && testX <= maxBoxX) {\n        selectTest = true\n      }\n\n      // Case where the synapse is wholly enclosed in the seldction box\n      if (fromNodeX >= minBoxX && fromNodeX <= maxBoxX && fromNodeY >= minBoxY && fromNodeY <= maxBoxY && toNodeX >= minBoxX && toNodeX <= maxBoxX && toNodeY >= minBoxY && toNodeY <= maxBoxY) {\n        selectTest = true\n      }\n\n      // The test synapse was selected!\n\n      if (selectTest) {\n        // shiftKey = toggleSelect, otherwise\n        if (e.shiftKey) {\n          if (Selected.Edges.indexOf(edge) !== -1) {\n            Control.deselectEdge(edge)\n          } else {\n            Control.selectEdge(edge)\n          }\n        } else {\n          Control.selectEdge(edge)\n        }\n      }\n    })\n    Mouse.boxStartCoordinates = false\n    Mouse.boxEndCoordinates = false\n    Visualize.mGraph.plot()\n  }, // selectWithBox\n  selectNodeOnClickHandler: function(node, e) {\n    if (Visualize.mGraph.busy) return\n\n    const self = JIT\n\n    // Copy topic title to clipboard\n    if (e.button === 1 && e.ctrlKey) clipboard.copy(node.name)\n\n    // catch right click on mac, which is often like ctrl+click\n    if (navigator.platform.indexOf('Mac') !== -1 && e.ctrlKey) {\n      self.selectNodeOnRightClickHandler(node, e)\n      return\n    }\n\n    // if on a topic page, let alt+click center you on a new topic\n    if (Active.Topic && e.altKey) {\n      JIT.RGraph.centerOn(node.id)\n      return\n    }\n\n    const check = self.nodeWasDoubleClicked()\n    if (check) {\n      self.nodeDoubleClickHandler(node, e)\n      return\n    } else {\n      // wait a certain length of time, then check again, then run this code\n      setTimeout(function() {\n        if (!JIT.nodeWasDoubleClicked()) {\n          if (e.button === 1 && !e.ctrlKey) {\n            var len = Selected.Nodes.length\n\n            for (let i = 0; i < len; i += 1) {\n              let n = Selected.Nodes[i]\n              let result = Util.openLink(DataModel.Topics.get(n.id).attributes.link)\n\n              if (!result) { // if link failed to open\n                break\n              }\n            }\n\n            if (!node.selected) Util.openLink(DataModel.Topics.get(node.id).attributes.link)\n          }\n        }\n      }, Mouse.DOUBLE_CLICK_TOLERANCE)\n    }\n  }, // selectNodeOnClickHandler\n  selectNodeOnRightClickHandler: function(node, e) {\n    // the 'node' variable is a JIT node, the one that was clicked on\n    // the 'e' variable is the click event\n\n    e.preventDefault()\n    e.stopPropagation()\n\n    if (Visualize.mGraph.busy) return\n\n    // select the node\n    Control.selectNode(node, e)\n\n    // delete old right click menu\n    $('.rightclickmenu').remove()\n    // create new menu for clicked on node\n    const rightclickmenu = document.createElement('div')\n    rightclickmenu.className = 'rightclickmenu'\n    // prevent the custom context menu from immediately opening the default context menu as well\n    rightclickmenu.setAttribute('oncontextmenu', 'return false')\n\n    // add the proper options to the menu\n    let menustring = '<ul>'\n\n    const authorized = Active.Map && Active.Map.authorizeToEdit(Active.Mapper)\n\n    const disabled = authorized ? '' : 'disabled'\n\n    if (Active.Map) menustring += '<li class=\"rc-hide\"><div class=\"rc-icon\"></div>Hide until refresh<div class=\"rc-keyboard\">Ctrl+H</div></li>'\n    if (Active.Map && Active.Mapper) menustring += '<li class=\"rc-remove ' + disabled + '\"><div class=\"rc-icon\"></div>Remove from map<div class=\"rc-keyboard\">Ctrl+M</div></li>'\n    if (Active.Topic) menustring += '<li class=\"rc-remove\"><div class=\"rc-icon\"></div>Remove from view<div class=\"rc-keyboard\">Ctrl+M</div></li>'\n    if (Active.Map && Active.Mapper) menustring += '<li class=\"rc-delete ' + disabled + '\"><div class=\"rc-icon\"></div>Delete<div class=\"rc-keyboard\">Ctrl+D</div></li>'\n\n    if (Active.Topic) {\n      menustring += '<li class=\"rc-center\"><div class=\"rc-icon\"></div>Center this topic<div class=\"rc-keyboard\">Alt+E</div></li>'\n    }\n\n    menustring += '<li class=\"rc-popout\"><div class=\"rc-icon\"></div>Open in new tab</li>'\n\n    if (Active.Mapper) {\n      const options = outdent`\n        <ul>\n          <li class=\"changeP toCommons\"><div class=\"rc-perm-icon\"></div>commons</li>\n          <li class=\"changeP toPublic\"><div class=\"rc-perm-icon\"></div>public</li>\n          <li class=\"changeP toPrivate\"><div class=\"rc-perm-icon\"></div>private</li>\n        </ul>`\n\n      menustring += '<li class=\"rc-spacer\"></li>'\n\n      menustring += outdent`\n        <li class=\"rc-permission\">\n          <div class=\"rc-icon\"></div>\n          Change permissions\n          ${options}\n          <div class=\"expandLi\"></div>\n        </li>`\n\n      const metacodeOptions = $('#metacodeOptions').html()\n\n      menustring += '<li class=\"rc-metacode\"><div class=\"rc-icon\"></div>Change metacode' + metacodeOptions + '<div class=\"expandLi\"></div></li>'\n    }\n    if (Active.Topic) {\n      if (!Active.Mapper) {\n        menustring += '<li class=\"rc-spacer\"></li>'\n      }\n\n      // set up the get sibling menu as a \"lazy load\"\n      // only fill in the submenu when they hover over the get siblings list item\n      const siblingMenu = outdent`\n        <ul id=\"fetchSiblingList\">\n          <li class=\"fetchAll\">All<div class=\"rc-keyboard\">Alt+R</div></li>\n          <li id=\"loadingSiblings\"></li>\n        </ul>`\n      menustring += '<li class=\"rc-siblings\"><div class=\"rc-icon\"></div>Reveal siblings' + siblingMenu + '<div class=\"expandLi\"></div></li>'\n    }\n\n    menustring += '</ul>'\n    rightclickmenu.innerHTML = menustring\n\n    // position the menu where the click happened\n    const position = {}\n    const RIGHTCLICK_WIDTH = 300\n    const RIGHTCLICK_HEIGHT = 144 // this does vary somewhat, but we can use static\n    const SUBMENUS_WIDTH = 256\n    const MAX_SUBMENU_HEIGHT = 270\n    const windowWidth = $(window).width()\n    const windowHeight = $(window).height()\n\n    if (windowWidth - e.clientX < SUBMENUS_WIDTH) {\n      position.right = windowWidth - e.clientX\n      $(rightclickmenu).addClass('moveMenusToLeft')\n    } else if (windowWidth - e.clientX < RIGHTCLICK_WIDTH) {\n      position.right = windowWidth - e.clientX\n    } else if (windowWidth - e.clientX < RIGHTCLICK_WIDTH + SUBMENUS_WIDTH) {\n      position.left = e.clientX\n      $(rightclickmenu).addClass('moveMenusToLeft')\n    } else {\n      position.left = e.clientX\n    }\n\n    if (windowHeight - e.clientY < MAX_SUBMENU_HEIGHT) {\n      position.bottom = windowHeight - e.clientY\n      $(rightclickmenu).addClass('moveMenusUp')\n    } else if (windowHeight - e.clientY < RIGHTCLICK_HEIGHT + MAX_SUBMENU_HEIGHT) {\n      position.top = e.clientY\n      $(rightclickmenu).addClass('moveMenusUp')\n    } else {\n      position.top = e.clientY\n    }\n\n    $(rightclickmenu).css(position)\n    // add the menu to the page\n    $('#wrapper').append(rightclickmenu)\n\n    // attach events to clicks on the list items\n\n    // delete the selected things from the database\n    if (authorized) {\n      $('.rc-delete').click(function() {\n        $('.rightclickmenu').remove()\n        Control.deleteSelected()\n      })\n    }\n\n    // remove the selected things from the map\n    if (Active.Topic || authorized) {\n      $('.rc-remove').click(function() {\n        $('.rightclickmenu').remove()\n        Control.removeSelectedEdges()\n        Control.removeSelectedNodes()\n      })\n    }\n\n    // hide selected nodes and synapses until refresh\n    $('.rc-hide').click(function() {\n      $('.rightclickmenu').remove()\n      Control.hideSelectedEdges()\n      Control.hideSelectedNodes()\n    })\n\n    // when in radial, center on the topic you picked\n    $('.rc-center').click(function() {\n      $('.rightclickmenu').remove()\n      Topic.centerOn(node.id)\n    })\n\n    // open the entity in a new tab\n    $('.rc-popout').click(function() {\n      $('.rightclickmenu').remove()\n      const win = window.open('/topics/' + node.id, '_blank')\n      win.focus()\n    })\n\n    // change the permission of all the selected nodes and synapses that you were the originator of\n    $('.rc-permission li').click(function() {\n      $('.rightclickmenu').remove()\n      // $(this).text() will be 'commons' 'public' or 'private'\n      Control.updateSelectedPermissions($(this).text())\n    })\n\n    // change the metacode of all the selected nodes that you have edit permission for\n    $('.rc-metacode li li').click(function() {\n      $('.rightclickmenu').remove()\n      //\n      Control.updateSelectedMetacodes($(this).attr('data-id'))\n    })\n\n    // fetch relatives\n    let fetchSent = false\n    $('.rc-siblings').hover(function() {\n      if (!fetchSent) {\n        JIT.populateRightClickSiblings(node)\n        fetchSent = true\n      }\n    })\n    $('.rc-siblings .fetchAll').click(function() {\n      $('.rightclickmenu').remove()\n      // data-id is a metacode id\n      Topic.fetchRelatives(node)\n    })\n  }, // selectNodeOnRightClickHandler,\n  populateRightClickSiblings: function(node) {\n    // depending on how many topics are selected, do different things\n    const topic = node.getData('topic')\n\n    // add a loading icon for now\n    const loader = new CanvasLoader('loadingSiblings')\n    loader.setColor('#4FC059') // default is '#000000'\n    loader.setDiameter(15) // default is 40\n    loader.setDensity(41) // default is 40\n    loader.setRange(0.9) // default is 1.3\n    loader.show() // Hidden by default\n\n    const topics = DataModel.Topics.map(function(t) { return t.id })\n    const topicsString = topics.join()\n\n    const successCallback = function(data) {\n      $('#loadingSiblings').remove()\n\n      for (var key in data) {\n        const string = `${DataModel.Metacodes.get(key).get('name')} (${data[key]})`\n        $('#fetchSiblingList').append(`<li class=\"getSiblings\" data-id=\"${key}\">${string}</li>`)\n      }\n\n      $('.rc-siblings .getSiblings').click(function() {\n        $('.rightclickmenu').remove()\n        // data-id is a metacode id\n        Topic.fetchRelatives(node, $(this).attr('data-id'))\n      })\n    }\n\n    $.ajax({\n      type: 'GET',\n      url: '/topics/' + topic.id + '/relative_numbers.json?network=' + topicsString,\n      success: successCallback,\n      error: function() {}\n    })\n  },\n  selectEdgeOnClickHandler: function(adj, e) {\n    if (Visualize.mGraph.busy) return\n\n    const self = JIT\n    var synapseText = adj.data.$synapses[0].attributes.desc\n    // Copy synapse label to clipboard\n    if (e.button === 1 && e.ctrlKey && synapseText !== '') clipboard.copy(synapseText)\n\n    // catch right click on mac, which is often like ctrl+click\n    if (navigator.platform.indexOf('Mac') !== -1 && e.ctrlKey) {\n      self.selectEdgeOnRightClickHandler(adj, e)\n      return\n    }\n\n    const check = self.nodeWasDoubleClicked()\n    if (check) {\n      self.edgeDoubleClickHandler(adj, e)\n      return\n    } else {\n      // wait a certain length of time, then check again, then run this code\n      setTimeout(function() {\n        if (!JIT.nodeWasDoubleClicked()) {\n          const edgeAlreadySelected = Selected.Edges.indexOf(adj) !== -1\n\n          if (!e.shiftKey) {\n            Control.deselectAllNodes()\n            Control.deselectAllEdges()\n          }\n\n          if (edgeAlreadySelected) {\n            Control.deselectEdge(adj)\n          } else {\n            Control.selectEdge(adj)\n          }\n\n          Visualize.mGraph.plot()\n        }\n      }, Mouse.DOUBLE_CLICK_TOLERANCE)\n    }\n  }, // selectEdgeOnClickHandler\n  selectEdgeOnRightClickHandler: function(adj, e) {\n    // the 'node' variable is a JIT node, the one that was clicked on\n    // the 'e' variable is the click event\n\n    if (adj.getData('alpha') === 0) return // don't do anything if the edge is filtered\n\n    e.preventDefault()\n    e.stopPropagation()\n\n    if (Visualize.mGraph.busy) return\n\n    Control.selectEdge(adj)\n\n    // delete old right click menu\n    $('.rightclickmenu').remove()\n    // create new menu for clicked on node\n    const rightclickmenu = document.createElement('div')\n    rightclickmenu.className = 'rightclickmenu'\n    // prevent the custom context menu from immediately opening the default context menu as well\n    rightclickmenu.setAttribute('oncontextmenu', 'return false')\n\n    // add the proper options to the menu\n    let menustring = '<ul>'\n\n    const authorized = Active.Map && Active.Map.authorizeToEdit(Active.Mapper)\n\n    const disabled = authorized ? '' : 'disabled'\n\n    if (Active.Map) menustring += '<li class=\"rc-hide\"><div class=\"rc-icon\"></div>Hide until refresh<div class=\"rc-keyboard\">Ctrl+H</div></li>'\n    if (Active.Map && Active.Mapper) menustring += '<li class=\"rc-remove ' + disabled + '\"><div class=\"rc-icon\"></div>Remove from map<div class=\"rc-keyboard\">Ctrl+M</div></li>'\n    if (Active.Topic) menustring += '<li class=\"rc-remove\"><div class=\"rc-icon\"></div>Remove from view<div class=\"rc-keyboard\">Ctrl+M</div></li>'\n    if (Active.Map && Active.Mapper) menustring += '<li class=\"rc-delete ' + disabled + '\"><div class=\"rc-icon\"></div>Delete<div class=\"rc-keyboard\">Ctrl+D</div></li>'\n\n    if (Active.Map && Active.Mapper) menustring += '<li class=\"rc-spacer\"></li>'\n\n    if (Active.Mapper) {\n      const permOptions = outdent`\n        <ul>\n          <li class=\"changeP toCommons\"><div class=\"rc-perm-icon\"></div>commons</li>\n          <li class=\"changeP toPublic\"><div class=\"rc-perm-icon\"></div>public</li>           <li class=\"changeP toPrivate\"><div class=\"rc-perm-icon\"></div>private</li>         </ul>`\n\n      menustring += '<li class=\"rc-permission\"><div class=\"rc-icon\"></div>Change permissions' + permOptions + '<div class=\"expandLi\"></div></li>'\n    }\n\n    menustring += '</ul>'\n    rightclickmenu.innerHTML = menustring\n\n    // position the menu where the click happened\n    const position = {}\n    const RIGHTCLICK_WIDTH = 300\n    const RIGHTCLICK_HEIGHT = 144 // this does vary somewhat, but we can use static\n    const SUBMENUS_WIDTH = 256\n    const MAX_SUBMENU_HEIGHT = 270\n    const windowWidth = $(window).width()\n    const windowHeight = $(window).height()\n\n    if (windowWidth - e.clientX < SUBMENUS_WIDTH) {\n      position.right = windowWidth - e.clientX\n      $(rightclickmenu).addClass('moveMenusToLeft')\n    } else if (windowWidth - e.clientX < RIGHTCLICK_WIDTH) {\n      position.right = windowWidth - e.clientX\n    } else position.left = e.clientX\n\n    if (windowHeight - e.clientY < MAX_SUBMENU_HEIGHT) {\n      position.bottom = windowHeight - e.clientY\n      $(rightclickmenu).addClass('moveMenusUp')\n    } else if (windowHeight - e.clientY < RIGHTCLICK_HEIGHT + MAX_SUBMENU_HEIGHT) {\n      position.top = e.clientY\n      $(rightclickmenu).addClass('moveMenusUp')\n    } else position.top = e.clientY\n\n    $(rightclickmenu).css(position)\n\n    // add the menu to the page\n    $('#wrapper').append(rightclickmenu)\n\n    // attach events to clicks on the list items\n\n    // delete the selected things from the database\n    if (authorized) {\n      $('.rc-delete').click(function() {\n        $('.rightclickmenu').remove()\n        Control.deleteSelected()\n      })\n    }\n\n    // remove the selected things from the map\n    if (authorized) {\n      $('.rc-remove').click(function() {\n        $('.rightclickmenu').remove()\n        Control.removeSelectedEdges()\n        Control.removeSelectedNodes()\n      })\n    }\n\n    // hide selected nodes and synapses until refresh\n    $('.rc-hide').click(function() {\n      $('.rightclickmenu').remove()\n      Control.hideSelectedEdges()\n      Control.hideSelectedNodes()\n    })\n\n    // change the permission of all the selected nodes and synapses that you were the originator of\n    $('.rc-permission li').click(function() {\n      $('.rightclickmenu').remove()\n      // $(this).text() will be 'commons' 'public' or 'private'\n      Control.updateSelectedPermissions($(this).text())\n    })\n  }, // selectEdgeOnRightClickHandler\n  SmoothPanning: function() {\n    const sx = Visualize.mGraph.canvas.scaleOffsetX\n    const sy = Visualize.mGraph.canvas.scaleOffsetY\n    const yVelocity = Mouse.changeInY // initial y velocity\n    const xVelocity = Mouse.changeInX // initial x velocity\n    let easing = 1 // frictional value\n\n    window.clearInterval(panningInt)\n    panningInt = setInterval(function() {\n      myTimer()\n    }, 1)\n\n    function myTimer() {\n      Visualize.mGraph.canvas.translate(xVelocity * easing * 1 / sx, yVelocity * easing * 1 / sy)\n      $(document).trigger(JIT.events.pan)\n      easing = easing * 0.75\n\n      if (easing < 0.1) window.clearInterval(panningInt)\n    }\n  }, // SmoothPanning\n  renderMidArrow: function(from, to, dim, swap, canvas, placement, newSynapse) {\n    const ctx = canvas.getCtx()\n    // invert edge direction\n    if (swap) {\n      const tmp = from\n      from = to\n      to = tmp\n    }\n    // vect represents a line from tip to tail of the arrow\n    const vect = new $jit.Complex(to.x - from.x, to.y - from.y)\n    // scale it\n    vect.$scale(dim / vect.norm())\n    // compute the midpoint of the edge line\n    const newX = (to.x - from.x) * placement + from.x\n    const newY = (to.y - from.y) * placement + from.y\n    const midPoint = new $jit.Complex(newX, newY)\n\n    // move midpoint by half the \"length\" of the arrow so the arrow is centered on the midpoint\n    const arrowPoint = new $jit.Complex((vect.x / 0.7) + midPoint.x, (vect.y / 0.7) + midPoint.y)\n    // compute the tail intersection point with the edge line\n    const intermediatePoint = new $jit.Complex(arrowPoint.x - vect.x, arrowPoint.y - vect.y)\n    // vector perpendicular to vect\n    const normal = new $jit.Complex(-vect.y / 2, vect.x / 2)\n    const v1 = intermediatePoint.add(normal)\n    const v2 = intermediatePoint.$add(normal.$scale(-1))\n\n    if (newSynapse) {\n      ctx.strokeStyle = '#4fc059'\n      ctx.lineWidth = 2\n      ctx.globalAlpha = 1\n    }\n    ctx.beginPath()\n    ctx.moveTo(from.x, from.y)\n    ctx.lineTo(to.x, to.y)\n    ctx.stroke()\n    ctx.beginPath()\n    ctx.moveTo(v1.x, v1.y)\n    ctx.lineTo(arrowPoint.x, arrowPoint.y)\n    ctx.lineTo(v2.x, v2.y)\n    ctx.stroke()\n  }, // renderMidArrow\n  renderEdgeArrows: function(edgeHelper, adj, synapse, canvas) {\n    const self = JIT\n\n    const directionCat = synapse.get('category')\n    const direction = synapse.getDirection()\n\n    const pos = adj.nodeFrom.pos.getc(true)\n    const posChild = adj.nodeTo.pos.getc(true)\n\n    // plot arrow edge\n    if (!direction) {\n      // render nothing for this arrow if the direction couldn't be retrieved\n    } else if (directionCat === 'none') {\n      edgeHelper.line.render({\n        x: pos.x,\n        y: pos.y\n      }, {\n        x: posChild.x,\n        y: posChild.y\n      }, canvas)\n    } else if (directionCat === 'both') {\n      self.renderMidArrow({\n        x: pos.x,\n        y: pos.y\n      }, {\n        x: posChild.x,\n        y: posChild.y\n      }, 13, true, canvas, 0.7)\n      self.renderMidArrow({\n        x: pos.x,\n        y: pos.y\n      }, {\n        x: posChild.x,\n        y: posChild.y\n      }, 13, false, canvas, 0.7)\n    } else if (directionCat === 'from-to') {\n      const inv = (direction[0] !== adj.nodeFrom.id)\n      self.renderMidArrow({\n        x: pos.x,\n        y: pos.y\n      }, {\n        x: posChild.x,\n        y: posChild.y\n      }, 13, inv, canvas, 0.7)\n      self.renderMidArrow({\n        x: pos.x,\n        y: pos.y\n      }, {\n        x: posChild.x,\n        y: posChild.y\n      }, 13, inv, canvas, 0.3)\n    }\n  }, // renderEdgeArrows\n  zoomIn: function(event) {\n    Visualize.mGraph.canvas.scale(1.25, 1.25)\n    $(document).trigger(JIT.events.zoom, [event])\n  },\n  zoomOut: function(event) {\n    Visualize.mGraph.canvas.scale(0.8, 0.8)\n    $(document).trigger(JIT.events.zoom, [event])\n  },\n  centerMap: function(canvas) {\n    const offsetScale = canvas.scaleOffsetX\n\n    canvas.scale(1 / offsetScale, 1 / offsetScale)\n\n    const offsetX = canvas.translateOffsetX\n    const offsetY = canvas.translateOffsetY\n\n    canvas.translate(-1 * offsetX, -1 * offsetY)\n  },\n  zoomToBox: function(event) {\n    const sX = Mouse.boxStartCoordinates.x\n    const sY = Mouse.boxStartCoordinates.y\n    const eX = Mouse.boxEndCoordinates.x\n    const eY = Mouse.boxEndCoordinates.y\n\n    let canvas = Visualize.mGraph.canvas\n    JIT.centerMap(canvas)\n\n    let height = $(document).height()\n    let width = $(document).width()\n\n    let spanX = Math.abs(sX - eX)\n    let spanY = Math.abs(sY - eY)\n    let ratioX = width / spanX\n    let ratioY = height / spanY\n\n    let newRatio = Math.min(ratioX, ratioY)\n\n    if (canvas.scaleOffsetX * newRatio <= 5 && canvas.scaleOffsetX * newRatio >= 0.2) {\n      canvas.scale(newRatio, newRatio)\n    } else if (canvas.scaleOffsetX * newRatio > 5) {\n      newRatio = 5 / canvas.scaleOffsetX\n      canvas.scale(newRatio, newRatio)\n    } else {\n      newRatio = 0.2 / canvas.scaleOffsetX\n      canvas.scale(newRatio, newRatio)\n    }\n\n    const cogX = (sX + eX) / 2\n    const cogY = (sY + eY) / 2\n\n    canvas.translate(-1 * cogX, -1 * cogY)\n    $(document).trigger(JIT.events.zoom, [event])\n\n    Mouse.boxStartCoordinates = false\n    Mouse.boxEndCoordinates = false\n    Visualize.mGraph.plot()\n  },\n  zoomExtents: function(event, canvas, denySelected) {\n    JIT.centerMap(canvas)\n    let height = canvas.getSize().height\n    let width = canvas.getSize().width\n    let maxX\n    let maxY\n    let minX\n    let minY\n    let counter = 0\n\n    let nodes\n    if (!denySelected && Selected.Nodes.length > 0) {\n      nodes = Selected.Nodes\n    } else {\n      nodes = _.values(Visualize.mGraph.graph.nodes)\n    }\n\n    if (nodes.length > 1) {\n      nodes.forEach(function(n) {\n        let x = n.pos.x\n        let y = n.pos.y\n\n        if (counter === 0 && n.getData('alpha') === 1) {\n          maxX = x\n          minX = x\n          maxY = y\n          minY = y\n        }\n\n        let arrayOfLabelLines = Util.splitLine(n.name, 25).split('\\n')\n        let dim = n.getData('dim')\n        let ctx = canvas.getCtx()\n\n        let height = 25 * arrayOfLabelLines.length\n\n        let lineWidths = []\n        for (let index = 0; index < arrayOfLabelLines.length; ++index) {\n          lineWidths.push(ctx.measureText(arrayOfLabelLines[index]).width)\n        }\n        let width = Math.max.apply(null, lineWidths) + 8\n\n        // only adjust these values if the node is not filtered\n        if (n.getData('alpha') === 1) {\n          maxX = Math.max(x + width / 2, maxX)\n          maxY = Math.max(y + n.getData('height') + 5 + height, maxY)\n          minX = Math.min(x - width / 2, minX)\n          minY = Math.min(y - dim, minY)\n\n          counter++\n        }\n      })\n\n      let spanX = maxX - minX\n      let spanY = maxY - minY\n      let ratioX = spanX / width\n      let ratioY = spanY / height\n\n      let cogX = (maxX + minX) / 2\n      let cogY = (maxY + minY) / 2\n\n      canvas.translate(-1 * cogX, -1 * cogY)\n\n      let newRatio = Math.max(ratioX, ratioY)\n      let scaleMultiplier = 1 / newRatio * 0.9\n\n      if (canvas.scaleOffsetX * scaleMultiplier <= 3 && canvas.scaleOffsetX * scaleMultiplier >= 0.2) 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frontend/src/Metamaps/JIT.js"],"mappings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Severity: Minor
Found in app/assets/javascripts/metamaps.secret.bundle.js by fixme

TODO found
Open

    eval("// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\nvar Buffer = __webpack_require__(591).Buffer;\n\nvar isBufferEncoding = Buffer.isEncoding\n  || function(encoding) {\n       switch (encoding && encoding.toLowerCase()) {\n         case 'hex': case 'utf8': case 'utf-8': case 'ascii': case 'binary': case 'base64': case 'ucs2': case 'ucs-2': case 'utf16le': case 'utf-16le': case 'raw': return true;\n         default: return false;\n       }\n     }\n\n\nfunction assertEncoding(encoding) {\n  if (encoding && !isBufferEncoding(encoding)) {\n    throw new Error('Unknown encoding: ' + encoding);\n  }\n}\n\n// StringDecoder provides an interface for efficiently splitting a series of\n// buffers into a series of JS strings without breaking apart multi-byte\n// characters. CESU-8 is handled as part of the UTF-8 encoding.\n//\n// @TODO Handling all encodings inside a single object makes it very difficult\n// to reason about this code, so it should be split up in the future.\n// @TODO There should be a utf8-strict encoding that rejects invalid UTF-8 code\n// points as used by CESU-8.\nvar StringDecoder = exports.StringDecoder = function(encoding) {\n  this.encoding = (encoding || 'utf8').toLowerCase().replace(/[-_]/, '');\n  assertEncoding(encoding);\n  switch (this.encoding) {\n    case 'utf8':\n      // CESU-8 represents each of Surrogate Pair by 3-bytes\n      this.surrogateSize = 3;\n      break;\n    case 'ucs2':\n    case 'utf16le':\n      // UTF-16 represents each of Surrogate Pair by 2-bytes\n      this.surrogateSize = 2;\n      this.detectIncompleteChar = utf16DetectIncompleteChar;\n      break;\n    case 'base64':\n      // Base-64 stores 3 bytes in 4 chars, and pads the remainder.\n      this.surrogateSize = 3;\n      this.detectIncompleteChar = base64DetectIncompleteChar;\n      break;\n    default:\n      this.write = passThroughWrite;\n      return;\n  }\n\n  // Enough space to store all bytes of a single character. UTF-8 needs 4\n  // bytes, but CESU-8 may require up to 6 (3 bytes per surrogate).\n  this.charBuffer = new Buffer(6);\n  // Number of bytes received for the current incomplete multi-byte character.\n  this.charReceived = 0;\n  // Number of bytes expected for the current incomplete multi-byte character.\n  this.charLength = 0;\n};\n\n\n// write decodes the given buffer and returns it as JS string that is\n// guaranteed to not contain any partial multi-byte characters. Any partial\n// character found at the end of the buffer is buffered up, and will be\n// returned when calling write again with the remaining bytes.\n//\n// Note: Converting a Buffer containing an orphan surrogate to a String\n// currently works, but converting a String to a Buffer (via `new Buffer`, or\n// Buffer#write) will replace incomplete surrogates with the unicode\n// replacement character. See https://codereview.chromium.org/121173009/ .\nStringDecoder.prototype.write = function(buffer) {\n  var charStr = '';\n  // if our last write ended with an incomplete multibyte character\n  while (this.charLength) {\n    // determine how many remaining bytes this buffer has to offer for this char\n    var available = (buffer.length >= this.charLength - this.charReceived) ?\n        this.charLength - this.charReceived :\n        buffer.length;\n\n    // add the new bytes to the char buffer\n    buffer.copy(this.charBuffer, this.charReceived, 0, available);\n    this.charReceived += available;\n\n    if (this.charReceived < this.charLength) {\n      // still not enough chars in this buffer? wait for more ...\n      return '';\n    }\n\n    // remove bytes belonging to the current character from the buffer\n    buffer = buffer.slice(available, buffer.length);\n\n    // get the character that was split\n    charStr = this.charBuffer.slice(0, this.charLength).toString(this.encoding);\n\n    // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character\n    var charCode = charStr.charCodeAt(charStr.length - 1);\n    if (charCode >= 0xD800 && charCode <= 0xDBFF) {\n      this.charLength += this.surrogateSize;\n      charStr = '';\n      continue;\n    }\n    this.charReceived = this.charLength = 0;\n\n    // if there are no more bytes in this buffer, just emit our char\n    if (buffer.length === 0) {\n      return charStr;\n    }\n    break;\n  }\n\n  // determine and set charLength / charReceived\n  this.detectIncompleteChar(buffer);\n\n  var end = buffer.length;\n  if (this.charLength) {\n    // buffer the incomplete character bytes we got\n    buffer.copy(this.charBuffer, 0, buffer.length - this.charReceived, end);\n    end -= this.charReceived;\n  }\n\n  charStr += buffer.toString(this.encoding, 0, end);\n\n  var end = charStr.length - 1;\n  var charCode = charStr.charCodeAt(end);\n  // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character\n  if (charCode >= 0xD800 && charCode <= 0xDBFF) {\n    var size = this.surrogateSize;\n    this.charLength += size;\n    this.charReceived += size;\n    this.charBuffer.copy(this.charBuffer, size, 0, size);\n    buffer.copy(this.charBuffer, 0, 0, size);\n    return charStr.substring(0, end);\n  }\n\n  // or just emit the charStr\n  return charStr;\n};\n\n// detectIncompleteChar determines if there is an incomplete UTF-8 character at\n// the end of the given buffer. If so, it sets this.charLength to the byte\n// length that character, and sets this.charReceived to the number of bytes\n// that are available for this character.\nStringDecoder.prototype.detectIncompleteChar = function(buffer) {\n  // determine how many bytes we have to check at the end of this buffer\n  var i = (buffer.length >= 3) ? 3 : buffer.length;\n\n  // Figure out if one of the last i bytes of our buffer announces an\n  // incomplete char.\n  for (; i > 0; i--) {\n    var c = buffer[buffer.length - i];\n\n    // See http://en.wikipedia.org/wiki/UTF-8#Description\n\n    // 110XXXXX\n    if (i == 1 && c >> 5 == 0x06) {\n      this.charLength = 2;\n      break;\n    }\n\n    // 1110XXXX\n    if (i <= 2 && c >> 4 == 0x0E) {\n      this.charLength = 3;\n      break;\n    }\n\n    // 11110XXX\n    if (i <= 3 && c >> 3 == 0x1E) {\n      this.charLength = 4;\n      break;\n    }\n  }\n  this.charReceived = i;\n};\n\nStringDecoder.prototype.end = function(buffer) {\n  var res = '';\n  if (buffer && buffer.length)\n    res = this.write(buffer);\n\n  if (this.charReceived) {\n    var cr = this.charReceived;\n    var buf = this.charBuffer;\n    var enc = this.encoding;\n    res += buf.slice(0, cr).toString(enc);\n  }\n\n  return res;\n};\n\nfunction passThroughWrite(buffer) {\n  return buffer.toString(this.encoding);\n}\n\nfunction utf16DetectIncompleteChar(buffer) {\n  this.charReceived = buffer.length % 2;\n  this.charLength = this.charReceived ? 2 : 0;\n}\n\nfunction base64DetectIncompleteChar(buffer) {\n  this.charReceived = buffer.length % 3;\n  this.charLength = this.charReceived ? 3 : 0;\n}\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"file":"600.js","sources":["/home/ubuntu/workspace/node_modules/string_decoder/index.js"],"sourcesContent":["// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\nvar Buffer = require('buffer').Buffer;\n\nvar isBufferEncoding = Buffer.isEncoding\n  || function(encoding) {\n       switch (encoding && encoding.toLowerCase()) {\n         case 'hex': case 'utf8': case 'utf-8': case 'ascii': case 'binary': case 'base64': case 'ucs2': case 'ucs-2': case 'utf16le': case 'utf-16le': case 'raw': return true;\n         default: return false;\n       }\n     }\n\n\nfunction assertEncoding(encoding) {\n  if (encoding && !isBufferEncoding(encoding)) {\n    throw new Error('Unknown encoding: ' + encoding);\n  }\n}\n\n// StringDecoder provides an interface for efficiently splitting a series of\n// buffers into a series of JS strings without breaking apart multi-byte\n// characters. CESU-8 is handled as part of the UTF-8 encoding.\n//\n// @TODO Handling all encodings inside a single object makes it very difficult\n// to reason about this code, so it should be split up in the future.\n// @TODO There should be a utf8-strict encoding that rejects invalid UTF-8 code\n// points as used by CESU-8.\nvar StringDecoder = exports.StringDecoder = function(encoding) {\n  this.encoding = (encoding || 'utf8').toLowerCase().replace(/[-_]/, '');\n  assertEncoding(encoding);\n  switch (this.encoding) {\n    case 'utf8':\n      // CESU-8 represents each of Surrogate Pair by 3-bytes\n      this.surrogateSize = 3;\n      break;\n    case 'ucs2':\n    case 'utf16le':\n      // UTF-16 represents each of Surrogate Pair by 2-bytes\n      this.surrogateSize = 2;\n      this.detectIncompleteChar = utf16DetectIncompleteChar;\n      break;\n    case 'base64':\n      // Base-64 stores 3 bytes in 4 chars, and pads the remainder.\n      this.surrogateSize = 3;\n      this.detectIncompleteChar = base64DetectIncompleteChar;\n      break;\n    default:\n      this.write = passThroughWrite;\n      return;\n  }\n\n  // Enough space to store all bytes of a single character. UTF-8 needs 4\n  // bytes, but CESU-8 may require up to 6 (3 bytes per surrogate).\n  this.charBuffer = new Buffer(6);\n  // Number of bytes received for the current incomplete multi-byte character.\n  this.charReceived = 0;\n  // Number of bytes expected for the current incomplete multi-byte character.\n  this.charLength = 0;\n};\n\n\n// write decodes the given buffer and returns it as JS string that is\n// guaranteed to not contain any partial multi-byte characters. Any partial\n// character found at the end of the buffer is buffered up, and will be\n// returned when calling write again with the remaining bytes.\n//\n// Note: Converting a Buffer containing an orphan surrogate to a String\n// currently works, but converting a String to a Buffer (via `new Buffer`, or\n// Buffer#write) will replace incomplete surrogates with the unicode\n// replacement character. See https://codereview.chromium.org/121173009/ .\nStringDecoder.prototype.write = function(buffer) {\n  var charStr = '';\n  // if our last write ended with an incomplete multibyte character\n  while (this.charLength) {\n    // determine how many remaining bytes this buffer has to offer for this char\n    var available = (buffer.length >= this.charLength - this.charReceived) ?\n        this.charLength - this.charReceived :\n        buffer.length;\n\n    // add the new bytes to the char buffer\n    buffer.copy(this.charBuffer, this.charReceived, 0, available);\n    this.charReceived += available;\n\n    if (this.charReceived < this.charLength) {\n      // still not enough chars in this buffer? wait for more ...\n      return '';\n    }\n\n    // remove bytes belonging to the current character from the buffer\n    buffer = buffer.slice(available, buffer.length);\n\n    // get the character that was split\n    charStr = this.charBuffer.slice(0, this.charLength).toString(this.encoding);\n\n    // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character\n    var charCode = charStr.charCodeAt(charStr.length - 1);\n    if (charCode >= 0xD800 && charCode <= 0xDBFF) {\n      this.charLength += this.surrogateSize;\n      charStr = '';\n      continue;\n    }\n    this.charReceived = this.charLength = 0;\n\n    // if there are no more bytes in this buffer, just emit our char\n    if (buffer.length === 0) {\n      return charStr;\n    }\n    break;\n  }\n\n  // determine and set charLength / charReceived\n  this.detectIncompleteChar(buffer);\n\n  var end = buffer.length;\n  if (this.charLength) {\n    // buffer the incomplete character bytes we got\n    buffer.copy(this.charBuffer, 0, buffer.length - this.charReceived, end);\n    end -= this.charReceived;\n  }\n\n  charStr += buffer.toString(this.encoding, 0, end);\n\n  var end = charStr.length - 1;\n  var charCode = charStr.charCodeAt(end);\n  // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character\n  if (charCode >= 0xD800 && charCode <= 0xDBFF) {\n    var size = this.surrogateSize;\n    this.charLength += size;\n    this.charReceived += size;\n    this.charBuffer.copy(this.charBuffer, size, 0, size);\n    buffer.copy(this.charBuffer, 0, 0, size);\n    return charStr.substring(0, end);\n  }\n\n  // or just emit the charStr\n  return charStr;\n};\n\n// detectIncompleteChar determines if there is an incomplete UTF-8 character at\n// the end of the given buffer. If so, it sets this.charLength to the byte\n// length that character, and sets this.charReceived to the number of bytes\n// that are available for this character.\nStringDecoder.prototype.detectIncompleteChar = function(buffer) {\n  // determine how many bytes we have to check at the end of this buffer\n  var i = (buffer.length >= 3) ? 3 : buffer.length;\n\n  // Figure out if one of the last i bytes of our buffer announces an\n  // incomplete char.\n  for (; i > 0; i--) {\n    var c = buffer[buffer.length - i];\n\n    // See http://en.wikipedia.org/wiki/UTF-8#Description\n\n    // 110XXXXX\n    if (i == 1 && c >> 5 == 0x06) {\n      this.charLength = 2;\n      break;\n    }\n\n    // 1110XXXX\n    if (i <= 2 && c >> 4 == 0x0E) {\n      this.charLength = 3;\n      break;\n    }\n\n    // 11110XXX\n    if (i <= 3 && c >> 3 == 0x1E) {\n      this.charLength = 4;\n      break;\n    }\n  }\n  this.charReceived = i;\n};\n\nStringDecoder.prototype.end = function(buffer) {\n  var res = '';\n  if (buffer && buffer.length)\n    res = this.write(buffer);\n\n  if (this.charReceived) {\n    var cr = this.charReceived;\n    var buf = this.charBuffer;\n    var enc = this.encoding;\n    res += buf.slice(0, cr).toString(enc);\n  }\n\n  return res;\n};\n\nfunction passThroughWrite(buffer) {\n  return buffer.toString(this.encoding);\n}\n\nfunction utf16DetectIncompleteChar(buffer) {\n  this.charReceived = buffer.length % 2;\n  this.charLength = this.charReceived ? 2 : 0;\n}\n\nfunction base64DetectIncompleteChar(buffer) {\n  this.charReceived = buffer.length % 3;\n  this.charLength = this.charReceived ? 3 : 0;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/string_decoder/index.js\n// module id = 600\n// module chunks = 0"],"mappings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sourceRoot":""}");
Severity: Minor
Found in app/assets/javascripts/metamaps.secret.bundle.js by fixme

TODO found
Open

    // TODO: handle case where permission changed
Severity: Minor
Found in frontend/src/Metamaps/Cable.js by fixme
Severity
Category
Status
Source
Language