tangosource/knowledge_base

File foundation.js has 287 lines of code (exceeds 250 allowed). Consider refactoring.

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/*
 * Foundation Responsive Library
 * http://foundation.zurb.com
 * Copyright 2013, ZURB
 * Free to use under the MIT license.

Similar blocks of code found in 2 locations. Consider refactoring.

Open

  function FastClick(layer){'use strict';var oldOnClick,self=this;this.trackingClick=false;this.trackingClickStart=0;this.targetElement=null;this.touchStartX=0;this.touchStartY=0;this.lastTouchIdentifier=0;this.touchBoundary=10;this.layer=layer;if(!layer||!layer.nodeType){throw new TypeError('Layer must be a document node');}this.onClick=function(){return FastClick.prototype.onClick.apply(self,arguments)};this.onMouse=function(){return FastClick.prototype.onMouse.apply(self,arguments)};this.onTouchStart=function(){return FastClick.prototype.onTouchStart.apply(self,arguments)};this.onTouchMove=function(){return FastClick.prototype.onTouchMove.apply(self,arguments)};this.onTouchEnd=function(){return FastClick.prototype.onTouchEnd.apply(self,arguments)};this.onTouchCancel=function(){return FastClick.prototype.onTouchCancel.apply(self,arguments)};if(FastClick.notNeeded(layer)){return}if(this.deviceIsAndroid){layer.addEventListener('mouseover',this.onMouse,true);layer.addEventListener('mousedown',this.onMouse,true);layer.addEventListener('mouseup',this.onMouse,true)}layer.addEventListener('click',this.onClick,true);layer.addEventListener('touchstart',this.onTouchStart,false);layer.addEventListener('touchmove',this.onTouchMove,false);layer.addEventListener('touchend',this.onTouchEnd,false);layer.addEventListener('touchcancel',this.onTouchCancel,false);if(!Event.prototype.stopImmediatePropagation){layer.removeEventListener=function(type,callback,capture){var rmv=Node.prototype.removeEventListener;if(type==='click'){rmv.call(layer,type,callback.hijacked||callback,capture)}else{rmv.call(layer,type,callback,capture)}};layer.addEventListener=function(type,callback,capture){var adv=Node.prototype.addEventListener;if(type==='click'){adv.call(layer,type,callback.hijacked||(callback.hijacked=function(event){if(!event.propagationStopped){callback(event)}}),capture)}else{adv.call(layer,type,callback,capture)}}}if(typeof layer.onclick==='function'){oldOnClick=layer.onclick;layer.addEventListener('click',function(event){oldOnClick(event)},false);layer.onclick=null}}FastClick.prototype.deviceIsAndroid=navigator.userAgent.indexOf('Android')>0;FastClick.prototype.deviceIsIOS=/iP(ad|hone|od)/.test(navigator.userAgent);FastClick.prototype.deviceIsIOS4=FastClick.prototype.deviceIsIOS&&(/OS 4_\d(_\d)?/).test(navigator.userAgent);FastClick.prototype.deviceIsIOSWithBadTarget=FastClick.prototype.deviceIsIOS&&(/OS ([6-9]|\d{2})_\d/).test(navigator.userAgent);FastClick.prototype.needsClick=function(target){'use strict';switch(target.nodeName.toLowerCase()){case'button':case'select':case'textarea':if(target.disabled){return true}break;case'input':if((this.deviceIsIOS&&target.type==='file')||target.disabled){return true}break;case'label':case'video':return true}return(/\bneedsclick\b/).test(target.className)};FastClick.prototype.needsFocus=function(target){'use strict';switch(target.nodeName.toLowerCase()){case'textarea':case'select':return true;case'input':switch(target.type){case'button':case'checkbox':case'file':case'image':case'radio':case'submit':return false}return!target.disabled&&!target.readOnly;default:return(/\bneedsfocus\b/).test(target.className)}};FastClick.prototype.sendClick=function(targetElement,event){'use strict';var clickEvent,touch;if(document.activeElement&&document.activeElement!==targetElement){document.activeElement.blur()}touch=event.changedTouches[0];clickEvent=document.createEvent('MouseEvents');clickEvent.initMouseEvent('click',true,true,window,1,touch.screenX,touch.screenY,touch.clientX,touch.clientY,false,false,false,false,0,null);clickEvent.forwardedTouchEvent=true;targetElement.dispatchEvent(clickEvent)};FastClick.prototype.focus=function(targetElement){'use strict';var length;if(this.deviceIsIOS&&targetElement.setSelectionRange){length=targetElement.value.length;targetElement.setSelectionRange(length,length)}else{targetElement.focus()}};FastClick.prototype.updateScrollParent=function(targetElement){'use strict';var scrollParent,parentElement;scrollParent=targetElement.fastClickScrollParent;if(!scrollParent||!scrollParent.contains(targetElement)){parentElement=targetElement;do{if(parentElement.scrollHeight>parentElement.offsetHeight){scrollParent=parentElement;targetElement.fastClickScrollParent=parentElement;break}parentElement=parentElement.parentElement}while(parentElement)}if(scrollParent){scrollParent.fastClickLastScrollTop=scrollParent.scrollTop}};FastClick.prototype.getTargetElementFromEventTarget=function(eventTarget){'use strict';if(eventTarget.nodeType===Node.TEXT_NODE){return eventTarget.parentNode}return eventTarget};FastClick.prototype.onTouchStart=function(event){'use strict';var targetElement,touch,selection;if(event.targetTouches.length>1){return true}targetElement=this.getTargetElementFromEventTarget(event.target);touch=event.targetTouches[0];if(this.deviceIsIOS){selection=window.getSelection();if(selection.rangeCount&&!selection.isCollapsed){return true}if(!this.deviceIsIOS4){if(touch.identifier===this.lastTouchIdentifier){event.preventDefault();return false}this.lastTouchIdentifier=touch.identifier;this.updateScrollParent(targetElement)}}this.trackingClick=true;this.trackingClickStart=event.timeStamp;this.targetElement=targetElement;this.touchStartX=touch.pageX;this.touchStartY=touch.pageY;if((event.timeStamp-this.lastClickTime)<200){event.preventDefault()}return true};FastClick.prototype.touchHasMoved=function(event){'use strict';var touch=event.changedTouches[0],boundary=this.touchBoundary;if(Math.abs(touch.pageX-this.touchStartX)>boundary||Math.abs(touch.pageY-this.touchStartY)>boundary){return true}return false};FastClick.prototype.onTouchMove=function(event){'use strict';if(!this.trackingClick){return true}if(this.targetElement!==this.getTargetElementFromEventTarget(event.target)||this.touchHasMoved(event)){this.trackingClick=false;this.targetElement=null}return true};FastClick.prototype.findControl=function(labelElement){'use strict';if(labelElement.control!==undefined){return labelElement.control}if(labelElement.htmlFor){return document.getElementById(labelElement.htmlFor)}return labelElement.querySelector('button, input:not([type=hidden]), keygen, meter, output, progress, select, textarea')};FastClick.prototype.onTouchEnd=function(event){'use strict';var forElement,trackingClickStart,targetTagName,scrollParent,touch,targetElement=this.targetElement;if(!this.trackingClick){return true}if((event.timeStamp-this.lastClickTime)<200){this.cancelNextClick=true;return true}this.lastClickTime=event.timeStamp;trackingClickStart=this.trackingClickStart;this.trackingClick=false;this.trackingClickStart=0;if(this.deviceIsIOSWithBadTarget){touch=event.changedTouches[0];targetElement=document.elementFromPoint(touch.pageX-window.pageXOffset,touch.pageY-window.pageYOffset)||targetElement;targetElement.fastClickScrollParent=this.targetElement.fastClickScrollParent}targetTagName=targetElement.tagName.toLowerCase();if(targetTagName==='label'){forElement=this.findControl(targetElement);if(forElement){this.focus(targetElement);if(this.deviceIsAndroid){return false}targetElement=forElement}}else if(this.needsFocus(targetElement)){if((event.timeStamp-trackingClickStart)>100||(this.deviceIsIOS&&window.top!==window&&targetTagName==='input')){this.targetElement=null;return false}this.focus(targetElement);if(!this.deviceIsIOS4||targetTagName!=='select'){this.targetElement=null;event.preventDefault()}return false}if(this.deviceIsIOS&&!this.deviceIsIOS4){scrollParent=targetElement.fastClickScrollParent;if(scrollParent&&scrollParent.fastClickLastScrollTop!==scrollParent.scrollTop){return true}}if(!this.needsClick(targetElement)){event.preventDefault();this.sendClick(targetElement,event)}return false};FastClick.prototype.onTouchCancel=function(){'use strict';this.trackingClick=false;this.targetElement=null};FastClick.prototype.onMouse=function(event){'use strict';if(!this.targetElement){return true}if(event.forwardedTouchEvent){return true}if(!event.cancelable){return true}if(!this.needsClick(this.targetElement)||this.cancelNextClick){if(event.stopImmediatePropagation){event.stopImmediatePropagation()}else{event.propagationStopped=true}event.stopPropagation();event.preventDefault();return false}return true};FastClick.prototype.onClick=function(event){'use strict';var permitted;if(this.trackingClick){this.targetElement=null;this.trackingClick=false;return true}if(event.target.type==='submit'&&event.detail===0){return true}permitted=this.onMouse(event);if(!permitted){this.targetElement=null}return permitted};FastClick.prototype.destroy=function(){'use strict';var layer=this.layer;if(this.deviceIsAndroid){layer.removeEventListener('mouseover',this.onMouse,true);layer.removeEventListener('mousedown',this.onMouse,true);layer.removeEventListener('mouseup',this.onMouse,true)}layer.removeEventListener('click',this.onClick,true);layer.removeEventListener('touchstart',this.onTouchStart,false);layer.removeEventListener('touchmove',this.onTouchMove,false);layer.removeEventListener('touchend',this.onTouchEnd,false);layer.removeEventListener('touchcancel',this.onTouchCancel,false)};FastClick.notNeeded=function(layer){'use strict';var metaViewport;if(typeof window.ontouchstart==='undefined'){return true}if((/Chrome\/[0-9]+/).test(navigator.userAgent)){if(FastClick.prototype.deviceIsAndroid){metaViewport=document.querySelector('meta[name=viewport]');if(metaViewport&&metaViewport.content.indexOf('user-scalable=no')!==-1){return true}}else{return true}}if(layer.style.msTouchAction==='none'){return true}return false};FastClick.attach=function(layer){'use strict';return new FastClick(layer)};if(typeof define!=='undefined'&&define.amd){define(function(){'use strict';return FastClick})}else if(typeof module!=='undefined'&&module.exports){module.exports=FastClick.attach;module.exports.FastClick=FastClick}else{window.FastClick=FastClick}

• Read up
  Read up

Function init has 5 arguments (exceeds 4 allowed). Consider refactoring.

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    init : function (scope, libraries, method, options, response) {

Avoid too many return statements within this function.

Open

  function FastClick(layer){'use strict';var oldOnClick,self=this;this.trackingClick=false;this.trackingClickStart=0;this.targetElement=null;this.touchStartX=0;this.touchStartY=0;this.lastTouchIdentifier=0;this.touchBoundary=10;this.layer=layer;if(!layer||!layer.nodeType){throw new TypeError('Layer must be a document node');}this.onClick=function(){return FastClick.prototype.onClick.apply(self,arguments)};this.onMouse=function(){return FastClick.prototype.onMouse.apply(self,arguments)};this.onTouchStart=function(){return FastClick.prototype.onTouchStart.apply(self,arguments)};this.onTouchMove=function(){return FastClick.prototype.onTouchMove.apply(self,arguments)};this.onTouchEnd=function(){return FastClick.prototype.onTouchEnd.apply(self,arguments)};this.onTouchCancel=function(){return FastClick.prototype.onTouchCancel.apply(self,arguments)};if(FastClick.notNeeded(layer)){return}if(this.deviceIsAndroid){layer.addEventListener('mouseover',this.onMouse,true);layer.addEventListener('mousedown',this.onMouse,true);layer.addEventListener('mouseup',this.onMouse,true)}layer.addEventListener('click',this.onClick,true);layer.addEventListener('touchstart',this.onTouchStart,false);layer.addEventListener('touchmove',this.onTouchMove,false);layer.addEventListener('touchend',this.onTouchEnd,false);layer.addEventListener('touchcancel',this.onTouchCancel,false);if(!Event.prototype.stopImmediatePropagation){layer.removeEventListener=function(type,callback,capture){var rmv=Node.prototype.removeEventListener;if(type==='click'){rmv.call(layer,type,callback.hijacked||callback,capture)}else{rmv.call(layer,type,callback,capture)}};layer.addEventListener=function(type,callback,capture){var adv=Node.prototype.addEventListener;if(type==='click'){adv.call(layer,type,callback.hijacked||(callback.hijacked=function(event){if(!event.propagationStopped){callback(event)}}),capture)}else{adv.call(layer,type,callback,capture)}}}if(typeof layer.onclick==='function'){oldOnClick=layer.onclick;layer.addEventListener('click',function(event){oldOnClick(event)},false);layer.onclick=null}}FastClick.prototype.deviceIsAndroid=navigator.userAgent.indexOf('Android')>0;FastClick.prototype.deviceIsIOS=/iP(ad|hone|od)/.test(navigator.userAgent);FastClick.prototype.deviceIsIOS4=FastClick.prototype.deviceIsIOS&&(/OS 4_\d(_\d)?/).test(navigator.userAgent);FastClick.prototype.deviceIsIOSWithBadTarget=FastClick.prototype.deviceIsIOS&&(/OS ([6-9]|\d{2})_\d/).test(navigator.userAgent);FastClick.prototype.needsClick=function(target){'use strict';switch(target.nodeName.toLowerCase()){case'button':case'select':case'textarea':if(target.disabled){return true}break;case'input':if((this.deviceIsIOS&&target.type==='file')||target.disabled){return true}break;case'label':case'video':return true}return(/\bneedsclick\b/).test(target.className)};FastClick.prototype.needsFocus=function(target){'use strict';switch(target.nodeName.toLowerCase()){case'textarea':case'select':return true;case'input':switch(target.type){case'button':case'checkbox':case'file':case'image':case'radio':case'submit':return false}return!target.disabled&&!target.readOnly;default:return(/\bneedsfocus\b/).test(target.className)}};FastClick.prototype.sendClick=function(targetElement,event){'use strict';var clickEvent,touch;if(document.activeElement&&document.activeElement!==targetElement){document.activeElement.blur()}touch=event.changedTouches[0];clickEvent=document.createEvent('MouseEvents');clickEvent.initMouseEvent('click',true,true,window,1,touch.screenX,touch.screenY,touch.clientX,touch.clientY,false,false,false,false,0,null);clickEvent.forwardedTouchEvent=true;targetElement.dispatchEvent(clickEvent)};FastClick.prototype.focus=function(targetElement){'use strict';var length;if(this.deviceIsIOS&&targetElement.setSelectionRange){length=targetElement.value.length;targetElement.setSelectionRange(length,length)}else{targetElement.focus()}};FastClick.prototype.updateScrollParent=function(targetElement){'use strict';var scrollParent,parentElement;scrollParent=targetElement.fastClickScrollParent;if(!scrollParent||!scrollParent.contains(targetElement)){parentElement=targetElement;do{if(parentElement.scrollHeight>parentElement.offsetHeight){scrollParent=parentElement;targetElement.fastClickScrollParent=parentElement;break}parentElement=parentElement.parentElement}while(parentElement)}if(scrollParent){scrollParent.fastClickLastScrollTop=scrollParent.scrollTop}};FastClick.prototype.getTargetElementFromEventTarget=function(eventTarget){'use strict';if(eventTarget.nodeType===Node.TEXT_NODE){return eventTarget.parentNode}return eventTarget};FastClick.prototype.onTouchStart=function(event){'use strict';var targetElement,touch,selection;if(event.targetTouches.length>1){return true}targetElement=this.getTargetElementFromEventTarget(event.target);touch=event.targetTouches[0];if(this.deviceIsIOS){selection=window.getSelection();if(selection.rangeCount&&!selection.isCollapsed){return true}if(!this.deviceIsIOS4){if(touch.identifier===this.lastTouchIdentifier){event.preventDefault();return false}this.lastTouchIdentifier=touch.identifier;this.updateScrollParent(targetElement)}}this.trackingClick=true;this.trackingClickStart=event.timeStamp;this.targetElement=targetElement;this.touchStartX=touch.pageX;this.touchStartY=touch.pageY;if((event.timeStamp-this.lastClickTime)<200){event.preventDefault()}return true};FastClick.prototype.touchHasMoved=function(event){'use strict';var touch=event.changedTouches[0],boundary=this.touchBoundary;if(Math.abs(touch.pageX-this.touchStartX)>boundary||Math.abs(touch.pageY-this.touchStartY)>boundary){return true}return false};FastClick.prototype.onTouchMove=function(event){'use strict';if(!this.trackingClick){return true}if(this.targetElement!==this.getTargetElementFromEventTarget(event.target)||this.touchHasMoved(event)){this.trackingClick=false;this.targetElement=null}return true};FastClick.prototype.findControl=function(labelElement){'use strict';if(labelElement.control!==undefined){return labelElement.control}if(labelElement.htmlFor){return document.getElementById(labelElement.htmlFor)}return labelElement.querySelector('button, input:not([type=hidden]), keygen, meter, output, progress, select, textarea')};FastClick.prototype.onTouchEnd=function(event){'use strict';var forElement,trackingClickStart,targetTagName,scrollParent,touch,targetElement=this.targetElement;if(!this.trackingClick){return true}if((event.timeStamp-this.lastClickTime)<200){this.cancelNextClick=true;return true}this.lastClickTime=event.timeStamp;trackingClickStart=this.trackingClickStart;this.trackingClick=false;this.trackingClickStart=0;if(this.deviceIsIOSWithBadTarget){touch=event.changedTouches[0];targetElement=document.elementFromPoint(touch.pageX-window.pageXOffset,touch.pageY-window.pageYOffset)||targetElement;targetElement.fastClickScrollParent=this.targetElement.fastClickScrollParent}targetTagName=targetElement.tagName.toLowerCase();if(targetTagName==='label'){forElement=this.findControl(targetElement);if(forElement){this.focus(targetElement);if(this.deviceIsAndroid){return false}targetElement=forElement}}else if(this.needsFocus(targetElement)){if((event.timeStamp-trackingClickStart)>100||(this.deviceIsIOS&&window.top!==window&&targetTagName==='input')){this.targetElement=null;return false}this.focus(targetElement);if(!this.deviceIsIOS4||targetTagName!=='select'){this.targetElement=null;event.preventDefault()}return false}if(this.deviceIsIOS&&!this.deviceIsIOS4){scrollParent=targetElement.fastClickScrollParent;if(scrollParent&&scrollParent.fastClickLastScrollTop!==scrollParent.scrollTop){return true}}if(!this.needsClick(targetElement)){event.preventDefault();this.sendClick(targetElement,event)}return false};FastClick.prototype.onTouchCancel=function(){'use strict';this.trackingClick=false;this.targetElement=null};FastClick.prototype.onMouse=function(event){'use strict';if(!this.targetElement){return true}if(event.forwardedTouchEvent){return true}if(!event.cancelable){return true}if(!this.needsClick(this.targetElement)||this.cancelNextClick){if(event.stopImmediatePropagation){event.stopImmediatePropagation()}else{event.propagationStopped=true}event.stopPropagation();event.preventDefault();return false}return true};FastClick.prototype.onClick=function(event){'use strict';var permitted;if(this.trackingClick){this.targetElement=null;this.trackingClick=false;return true}if(event.target.type==='submit'&&event.detail===0){return true}permitted=this.onMouse(event);if(!permitted){this.targetElement=null}return permitted};FastClick.prototype.destroy=function(){'use strict';var layer=this.layer;if(this.deviceIsAndroid){layer.removeEventListener('mouseover',this.onMouse,true);layer.removeEventListener('mousedown',this.onMouse,true);layer.removeEventListener('mouseup',this.onMouse,true)}layer.removeEventListener('click',this.onClick,true);layer.removeEventListener('touchstart',this.onTouchStart,false);layer.removeEventListener('touchmove',this.onTouchMove,false);layer.removeEventListener('touchend',this.onTouchEnd,false);layer.removeEventListener('touchcancel',this.onTouchCancel,false)};FastClick.notNeeded=function(layer){'use strict';var metaViewport;if(typeof window.ontouchstart==='undefined'){return true}if((/Chrome\/[0-9]+/).test(navigator.userAgent)){if(FastClick.prototype.deviceIsAndroid){metaViewport=document.querySelector('meta[name=viewport]');if(metaViewport&&metaViewport.content.indexOf('user-scalable=no')!==-1){return true}}else{return true}}if(layer.style.msTouchAction==='none'){return true}return false};FastClick.attach=function(layer){'use strict';return new FastClick(layer)};if(typeof define!=='undefined'&&define.amd){define(function(){'use strict';return FastClick})}else if(typeof module!=='undefined'&&module.exports){module.exports=FastClick.attach;module.exports.FastClick=FastClick}else{window.FastClick=FastClick}

Avoid too many return statements within this function.

Open

  function FastClick(layer){'use strict';var oldOnClick,self=this;this.trackingClick=false;this.trackingClickStart=0;this.targetElement=null;this.touchStartX=0;this.touchStartY=0;this.lastTouchIdentifier=0;this.touchBoundary=10;this.layer=layer;if(!layer||!layer.nodeType){throw new TypeError('Layer must be a document node');}this.onClick=function(){return FastClick.prototype.onClick.apply(self,arguments)};this.onMouse=function(){return FastClick.prototype.onMouse.apply(self,arguments)};this.onTouchStart=function(){return FastClick.prototype.onTouchStart.apply(self,arguments)};this.onTouchMove=function(){return FastClick.prototype.onTouchMove.apply(self,arguments)};this.onTouchEnd=function(){return FastClick.prototype.onTouchEnd.apply(self,arguments)};this.onTouchCancel=function(){return FastClick.prototype.onTouchCancel.apply(self,arguments)};if(FastClick.notNeeded(layer)){return}if(this.deviceIsAndroid){layer.addEventListener('mouseover',this.onMouse,true);layer.addEventListener('mousedown',this.onMouse,true);layer.addEventListener('mouseup',this.onMouse,true)}layer.addEventListener('click',this.onClick,true);layer.addEventListener('touchstart',this.onTouchStart,false);layer.addEventListener('touchmove',this.onTouchMove,false);layer.addEventListener('touchend',this.onTouchEnd,false);layer.addEventListener('touchcancel',this.onTouchCancel,false);if(!Event.prototype.stopImmediatePropagation){layer.removeEventListener=function(type,callback,capture){var rmv=Node.prototype.removeEventListener;if(type==='click'){rmv.call(layer,type,callback.hijacked||callback,capture)}else{rmv.call(layer,type,callback,capture)}};layer.addEventListener=function(type,callback,capture){var adv=Node.prototype.addEventListener;if(type==='click'){adv.call(layer,type,callback.hijacked||(callback.hijacked=function(event){if(!event.propagationStopped){callback(event)}}),capture)}else{adv.call(layer,type,callback,capture)}}}if(typeof layer.onclick==='function'){oldOnClick=layer.onclick;layer.addEventListener('click',function(event){oldOnClick(event)},false);layer.onclick=null}}FastClick.prototype.deviceIsAndroid=navigator.userAgent.indexOf('Android')>0;FastClick.prototype.deviceIsIOS=/iP(ad|hone|od)/.test(navigator.userAgent);FastClick.prototype.deviceIsIOS4=FastClick.prototype.deviceIsIOS&&(/OS 4_\d(_\d)?/).test(navigator.userAgent);FastClick.prototype.deviceIsIOSWithBadTarget=FastClick.prototype.deviceIsIOS&&(/OS ([6-9]|\d{2})_\d/).test(navigator.userAgent);FastClick.prototype.needsClick=function(target){'use strict';switch(target.nodeName.toLowerCase()){case'button':case'select':case'textarea':if(target.disabled){return true}break;case'input':if((this.deviceIsIOS&&target.type==='file')||target.disabled){return true}break;case'label':case'video':return true}return(/\bneedsclick\b/).test(target.className)};FastClick.prototype.needsFocus=function(target){'use strict';switch(target.nodeName.toLowerCase()){case'textarea':case'select':return true;case'input':switch(target.type){case'button':case'checkbox':case'file':case'image':case'radio':case'submit':return false}return!target.disabled&&!target.readOnly;default:return(/\bneedsfocus\b/).test(target.className)}};FastClick.prototype.sendClick=function(targetElement,event){'use strict';var clickEvent,touch;if(document.activeElement&&document.activeElement!==targetElement){document.activeElement.blur()}touch=event.changedTouches[0];clickEvent=document.createEvent('MouseEvents');clickEvent.initMouseEvent('click',true,true,window,1,touch.screenX,touch.screenY,touch.clientX,touch.clientY,false,false,false,false,0,null);clickEvent.forwardedTouchEvent=true;targetElement.dispatchEvent(clickEvent)};FastClick.prototype.focus=function(targetElement){'use strict';var length;if(this.deviceIsIOS&&targetElement.setSelectionRange){length=targetElement.value.length;targetElement.setSelectionRange(length,length)}else{targetElement.focus()}};FastClick.prototype.updateScrollParent=function(targetElement){'use strict';var scrollParent,parentElement;scrollParent=targetElement.fastClickScrollParent;if(!scrollParent||!scrollParent.contains(targetElement)){parentElement=targetElement;do{if(parentElement.scrollHeight>parentElement.offsetHeight){scrollParent=parentElement;targetElement.fastClickScrollParent=parentElement;break}parentElement=parentElement.parentElement}while(parentElement)}if(scrollParent){scrollParent.fastClickLastScrollTop=scrollParent.scrollTop}};FastClick.prototype.getTargetElementFromEventTarget=function(eventTarget){'use strict';if(eventTarget.nodeType===Node.TEXT_NODE){return eventTarget.parentNode}return eventTarget};FastClick.prototype.onTouchStart=function(event){'use strict';var targetElement,touch,selection;if(event.targetTouches.length>1){return true}targetElement=this.getTargetElementFromEventTarget(event.target);touch=event.targetTouches[0];if(this.deviceIsIOS){selection=window.getSelection();if(selection.rangeCount&&!selection.isCollapsed){return true}if(!this.deviceIsIOS4){if(touch.identifier===this.lastTouchIdentifier){event.preventDefault();return false}this.lastTouchIdentifier=touch.identifier;this.updateScrollParent(targetElement)}}this.trackingClick=true;this.trackingClickStart=event.timeStamp;this.targetElement=targetElement;this.touchStartX=touch.pageX;this.touchStartY=touch.pageY;if((event.timeStamp-this.lastClickTime)<200){event.preventDefault()}return true};FastClick.prototype.touchHasMoved=function(event){'use strict';var touch=event.changedTouches[0],boundary=this.touchBoundary;if(Math.abs(touch.pageX-this.touchStartX)>boundary||Math.abs(touch.pageY-this.touchStartY)>boundary){return true}return false};FastClick.prototype.onTouchMove=function(event){'use strict';if(!this.trackingClick){return true}if(this.targetElement!==this.getTargetElementFromEventTarget(event.target)||this.touchHasMoved(event)){this.trackingClick=false;this.targetElement=null}return true};FastClick.prototype.findControl=function(labelElement){'use strict';if(labelElement.control!==undefined){return labelElement.control}if(labelElement.htmlFor){return document.getElementById(labelElement.htmlFor)}return labelElement.querySelector('button, input:not([type=hidden]), keygen, meter, output, progress, select, textarea')};FastClick.prototype.onTouchEnd=function(event){'use strict';var forElement,trackingClickStart,targetTagName,scrollParent,touch,targetElement=this.targetElement;if(!this.trackingClick){return true}if((event.timeStamp-this.lastClickTime)<200){this.cancelNextClick=true;return true}this.lastClickTime=event.timeStamp;trackingClickStart=this.trackingClickStart;this.trackingClick=false;this.trackingClickStart=0;if(this.deviceIsIOSWithBadTarget){touch=event.changedTouches[0];targetElement=document.elementFromPoint(touch.pageX-window.pageXOffset,touch.pageY-window.pageYOffset)||targetElement;targetElement.fastClickScrollParent=this.targetElement.fastClickScrollParent}targetTagName=targetElement.tagName.toLowerCase();if(targetTagName==='label'){forElement=this.findControl(targetElement);if(forElement){this.focus(targetElement);if(this.deviceIsAndroid){return false}targetElement=forElement}}else if(this.needsFocus(targetElement)){if((event.timeStamp-trackingClickStart)>100||(this.deviceIsIOS&&window.top!==window&&targetTagName==='input')){this.targetElement=null;return false}this.focus(targetElement);if(!this.deviceIsIOS4||targetTagName!=='select'){this.targetElement=null;event.preventDefault()}return false}if(this.deviceIsIOS&&!this.deviceIsIOS4){scrollParent=targetElement.fastClickScrollParent;if(scrollParent&&scrollParent.fastClickLastScrollTop!==scrollParent.scrollTop){return true}}if(!this.needsClick(targetElement)){event.preventDefault();this.sendClick(targetElement,event)}return false};FastClick.prototype.onTouchCancel=function(){'use strict';this.trackingClick=false;this.targetElement=null};FastClick.prototype.onMouse=function(event){'use strict';if(!this.targetElement){return true}if(event.forwardedTouchEvent){return true}if(!event.cancelable){return true}if(!this.needsClick(this.targetElement)||this.cancelNextClick){if(event.stopImmediatePropagation){event.stopImmediatePropagation()}else{event.propagationStopped=true}event.stopPropagation();event.preventDefault();return false}return true};FastClick.prototype.onClick=function(event){'use strict';var permitted;if(this.trackingClick){this.targetElement=null;this.trackingClick=false;return true}if(event.target.type==='submit'&&event.detail===0){return true}permitted=this.onMouse(event);if(!permitted){this.targetElement=null}return permitted};FastClick.prototype.destroy=function(){'use strict';var layer=this.layer;if(this.deviceIsAndroid){layer.removeEventListener('mouseover',this.onMouse,true);layer.removeEventListener('mousedown',this.onMouse,true);layer.removeEventListener('mouseup',this.onMouse,true)}layer.removeEventListener('click',this.onClick,true);layer.removeEventListener('touchstart',this.onTouchStart,false);layer.removeEventListener('touchmove',this.onTouchMove,false);layer.removeEventListener('touchend',this.onTouchEnd,false);layer.removeEventListener('touchcancel',this.onTouchCancel,false)};FastClick.notNeeded=function(layer){'use strict';var metaViewport;if(typeof window.ontouchstart==='undefined'){return true}if((/Chrome\/[0-9]+/).test(navigator.userAgent)){if(FastClick.prototype.deviceIsAndroid){metaViewport=document.querySelector('meta[name=viewport]');if(metaViewport&&metaViewport.content.indexOf('user-scalable=no')!==-1){return true}}else{return true}}if(layer.style.msTouchAction==='none'){return true}return false};FastClick.attach=function(layer){'use strict';return new FastClick(layer)};if(typeof define!=='undefined'&&define.amd){define(function(){'use strict';return FastClick})}else if(typeof module!=='undefined'&&module.exports){module.exports=FastClick.attach;module.exports.FastClick=FastClick}else{window.FastClick=FastClick}

Avoid too many return statements within this function.

Open

  function FastClick(layer){'use strict';var oldOnClick,self=this;this.trackingClick=false;this.trackingClickStart=0;this.targetElement=null;this.touchStartX=0;this.touchStartY=0;this.lastTouchIdentifier=0;this.touchBoundary=10;this.layer=layer;if(!layer||!layer.nodeType){throw new TypeError('Layer must be a document node');}this.onClick=function(){return FastClick.prototype.onClick.apply(self,arguments)};this.onMouse=function(){return FastClick.prototype.onMouse.apply(self,arguments)};this.onTouchStart=function(){return FastClick.prototype.onTouchStart.apply(self,arguments)};this.onTouchMove=function(){return FastClick.prototype.onTouchMove.apply(self,arguments)};this.onTouchEnd=function(){return FastClick.prototype.onTouchEnd.apply(self,arguments)};this.onTouchCancel=function(){return FastClick.prototype.onTouchCancel.apply(self,arguments)};if(FastClick.notNeeded(layer)){return}if(this.deviceIsAndroid){layer.addEventListener('mouseover',this.onMouse,true);layer.addEventListener('mousedown',this.onMouse,true);layer.addEventListener('mouseup',this.onMouse,true)}layer.addEventListener('click',this.onClick,true);layer.addEventListener('touchstart',this.onTouchStart,false);layer.addEventListener('touchmove',this.onTouchMove,false);layer.addEventListener('touchend',this.onTouchEnd,false);layer.addEventListener('touchcancel',this.onTouchCancel,false);if(!Event.prototype.stopImmediatePropagation){layer.removeEventListener=function(type,callback,capture){var rmv=Node.prototype.removeEventListener;if(type==='click'){rmv.call(layer,type,callback.hijacked||callback,capture)}else{rmv.call(layer,type,callback,capture)}};layer.addEventListener=function(type,callback,capture){var adv=Node.prototype.addEventListener;if(type==='click'){adv.call(layer,type,callback.hijacked||(callback.hijacked=function(event){if(!event.propagationStopped){callback(event)}}),capture)}else{adv.call(layer,type,callback,capture)}}}if(typeof layer.onclick==='function'){oldOnClick=layer.onclick;layer.addEventListener('click',function(event){oldOnClick(event)},false);layer.onclick=null}}FastClick.prototype.deviceIsAndroid=navigator.userAgent.indexOf('Android')>0;FastClick.prototype.deviceIsIOS=/iP(ad|hone|od)/.test(navigator.userAgent);FastClick.prototype.deviceIsIOS4=FastClick.prototype.deviceIsIOS&&(/OS 4_\d(_\d)?/).test(navigator.userAgent);FastClick.prototype.deviceIsIOSWithBadTarget=FastClick.prototype.deviceIsIOS&&(/OS ([6-9]|\d{2})_\d/).test(navigator.userAgent);FastClick.prototype.needsClick=function(target){'use strict';switch(target.nodeName.toLowerCase()){case'button':case'select':case'textarea':if(target.disabled){return true}break;case'input':if((this.deviceIsIOS&&target.type==='file')||target.disabled){return true}break;case'label':case'video':return true}return(/\bneedsclick\b/).test(target.className)};FastClick.prototype.needsFocus=function(target){'use strict';switch(target.nodeName.toLowerCase()){case'textarea':case'select':return true;case'input':switch(target.type){case'button':case'checkbox':case'file':case'image':case'radio':case'submit':return false}return!target.disabled&&!target.readOnly;default:return(/\bneedsfocus\b/).test(target.className)}};FastClick.prototype.sendClick=function(targetElement,event){'use strict';var clickEvent,touch;if(document.activeElement&&document.activeElement!==targetElement){document.activeElement.blur()}touch=event.changedTouches[0];clickEvent=document.createEvent('MouseEvents');clickEvent.initMouseEvent('click',true,true,window,1,touch.screenX,touch.screenY,touch.clientX,touch.clientY,false,false,false,false,0,null);clickEvent.forwardedTouchEvent=true;targetElement.dispatchEvent(clickEvent)};FastClick.prototype.focus=function(targetElement){'use strict';var length;if(this.deviceIsIOS&&targetElement.setSelectionRange){length=targetElement.value.length;targetElement.setSelectionRange(length,length)}else{targetElement.focus()}};FastClick.prototype.updateScrollParent=function(targetElement){'use strict';var scrollParent,parentElement;scrollParent=targetElement.fastClickScrollParent;if(!scrollParent||!scrollParent.contains(targetElement)){parentElement=targetElement;do{if(parentElement.scrollHeight>parentElement.offsetHeight){scrollParent=parentElement;targetElement.fastClickScrollParent=parentElement;break}parentElement=parentElement.parentElement}while(parentElement)}if(scrollParent){scrollParent.fastClickLastScrollTop=scrollParent.scrollTop}};FastClick.prototype.getTargetElementFromEventTarget=function(eventTarget){'use strict';if(eventTarget.nodeType===Node.TEXT_NODE){return eventTarget.parentNode}return eventTarget};FastClick.prototype.onTouchStart=function(event){'use strict';var targetElement,touch,selection;if(event.targetTouches.length>1){return true}targetElement=this.getTargetElementFromEventTarget(event.target);touch=event.targetTouches[0];if(this.deviceIsIOS){selection=window.getSelection();if(selection.rangeCount&&!selection.isCollapsed){return true}if(!this.deviceIsIOS4){if(touch.identifier===this.lastTouchIdentifier){event.preventDefault();return false}this.lastTouchIdentifier=touch.identifier;this.updateScrollParent(targetElement)}}this.trackingClick=true;this.trackingClickStart=event.timeStamp;this.targetElement=targetElement;this.touchStartX=touch.pageX;this.touchStartY=touch.pageY;if((event.timeStamp-this.lastClickTime)<200){event.preventDefault()}return true};FastClick.prototype.touchHasMoved=function(event){'use strict';var touch=event.changedTouches[0],boundary=this.touchBoundary;if(Math.abs(touch.pageX-this.touchStartX)>boundary||Math.abs(touch.pageY-this.touchStartY)>boundary){return true}return false};FastClick.prototype.onTouchMove=function(event){'use strict';if(!this.trackingClick){return true}if(this.targetElement!==this.getTargetElementFromEventTarget(event.target)||this.touchHasMoved(event)){this.trackingClick=false;this.targetElement=null}return true};FastClick.prototype.findControl=function(labelElement){'use strict';if(labelElement.control!==undefined){return labelElement.control}if(labelElement.htmlFor){return document.getElementById(labelElement.htmlFor)}return labelElement.querySelector('button, input:not([type=hidden]), keygen, meter, output, progress, select, textarea')};FastClick.prototype.onTouchEnd=function(event){'use strict';var forElement,trackingClickStart,targetTagName,scrollParent,touch,targetElement=this.targetElement;if(!this.trackingClick){return true}if((event.timeStamp-this.lastClickTime)<200){this.cancelNextClick=true;return true}this.lastClickTime=event.timeStamp;trackingClickStart=this.trackingClickStart;this.trackingClick=false;this.trackingClickStart=0;if(this.deviceIsIOSWithBadTarget){touch=event.changedTouches[0];targetElement=document.elementFromPoint(touch.pageX-window.pageXOffset,touch.pageY-window.pageYOffset)||targetElement;targetElement.fastClickScrollParent=this.targetElement.fastClickScrollParent}targetTagName=targetElement.tagName.toLowerCase();if(targetTagName==='label'){forElement=this.findControl(targetElement);if(forElement){this.focus(targetElement);if(this.deviceIsAndroid){return false}targetElement=forElement}}else if(this.needsFocus(targetElement)){if((event.timeStamp-trackingClickStart)>100||(this.deviceIsIOS&&window.top!==window&&targetTagName==='input')){this.targetElement=null;return false}this.focus(targetElement);if(!this.deviceIsIOS4||targetTagName!=='select'){this.targetElement=null;event.preventDefault()}return false}if(this.deviceIsIOS&&!this.deviceIsIOS4){scrollParent=targetElement.fastClickScrollParent;if(scrollParent&&scrollParent.fastClickLastScrollTop!==scrollParent.scrollTop){return true}}if(!this.needsClick(targetElement)){event.preventDefault();this.sendClick(targetElement,event)}return false};FastClick.prototype.onTouchCancel=function(){'use strict';this.trackingClick=false;this.targetElement=null};FastClick.prototype.onMouse=function(event){'use strict';if(!this.targetElement){return true}if(event.forwardedTouchEvent){return true}if(!event.cancelable){return true}if(!this.needsClick(this.targetElement)||this.cancelNextClick){if(event.stopImmediatePropagation){event.stopImmediatePropagation()}else{event.propagationStopped=true}event.stopPropagation();event.preventDefault();return false}return true};FastClick.prototype.onClick=function(event){'use strict';var permitted;if(this.trackingClick){this.targetElement=null;this.trackingClick=false;return true}if(event.target.type==='submit'&&event.detail===0){return true}permitted=this.onMouse(event);if(!permitted){this.targetElement=null}return permitted};FastClick.prototype.destroy=function(){'use strict';var layer=this.layer;if(this.deviceIsAndroid){layer.removeEventListener('mouseover',this.onMouse,true);layer.removeEventListener('mousedown',this.onMouse,true);layer.removeEventListener('mouseup',this.onMouse,true)}layer.removeEventListener('click',this.onClick,true);layer.removeEventListener('touchstart',this.onTouchStart,false);layer.removeEventListener('touchmove',this.onTouchMove,false);layer.removeEventListener('touchend',this.onTouchEnd,false);layer.removeEventListener('touchcancel',this.onTouchCancel,false)};FastClick.notNeeded=function(layer){'use strict';var metaViewport;if(typeof window.ontouchstart==='undefined'){return true}if((/Chrome\/[0-9]+/).test(navigator.userAgent)){if(FastClick.prototype.deviceIsAndroid){metaViewport=document.querySelector('meta[name=viewport]');if(metaViewport&&metaViewport.content.indexOf('user-scalable=no')!==-1){return true}}else{return true}}if(layer.style.msTouchAction==='none'){return true}return false};FastClick.attach=function(layer){'use strict';return new FastClick(layer)};if(typeof define!=='undefined'&&define.amd){define(function(){'use strict';return FastClick})}else if(typeof module!=='undefined'&&module.exports){module.exports=FastClick.attach;module.exports.FastClick=FastClick}else{window.FastClick=FastClick}

Avoid too many return statements within this function.

Open

  function FastClick(layer){'use strict';var oldOnClick,self=this;this.trackingClick=false;this.trackingClickStart=0;this.targetElement=null;this.touchStartX=0;this.touchStartY=0;this.lastTouchIdentifier=0;this.touchBoundary=10;this.layer=layer;if(!layer||!layer.nodeType){throw new TypeError('Layer must be a document node');}this.onClick=function(){return FastClick.prototype.onClick.apply(self,arguments)};this.onMouse=function(){return FastClick.prototype.onMouse.apply(self,arguments)};this.onTouchStart=function(){return FastClick.prototype.onTouchStart.apply(self,arguments)};this.onTouchMove=function(){return FastClick.prototype.onTouchMove.apply(self,arguments)};this.onTouchEnd=function(){return FastClick.prototype.onTouchEnd.apply(self,arguments)};this.onTouchCancel=function(){return FastClick.prototype.onTouchCancel.apply(self,arguments)};if(FastClick.notNeeded(layer)){return}if(this.deviceIsAndroid){layer.addEventListener('mouseover',this.onMouse,true);layer.addEventListener('mousedown',this.onMouse,true);layer.addEventListener('mouseup',this.onMouse,true)}layer.addEventListener('click',this.onClick,true);layer.addEventListener('touchstart',this.onTouchStart,false);layer.addEventListener('touchmove',this.onTouchMove,false);layer.addEventListener('touchend',this.onTouchEnd,false);layer.addEventListener('touchcancel',this.onTouchCancel,false);if(!Event.prototype.stopImmediatePropagation){layer.removeEventListener=function(type,callback,capture){var rmv=Node.prototype.removeEventListener;if(type==='click'){rmv.call(layer,type,callback.hijacked||callback,capture)}else{rmv.call(layer,type,callback,capture)}};layer.addEventListener=function(type,callback,capture){var adv=Node.prototype.addEventListener;if(type==='click'){adv.call(layer,type,callback.hijacked||(callback.hijacked=function(event){if(!event.propagationStopped){callback(event)}}),capture)}else{adv.call(layer,type,callback,capture)}}}if(typeof layer.onclick==='function'){oldOnClick=layer.onclick;layer.addEventListener('click',function(event){oldOnClick(event)},false);layer.onclick=null}}FastClick.prototype.deviceIsAndroid=navigator.userAgent.indexOf('Android')>0;FastClick.prototype.deviceIsIOS=/iP(ad|hone|od)/.test(navigator.userAgent);FastClick.prototype.deviceIsIOS4=FastClick.prototype.deviceIsIOS&&(/OS 4_\d(_\d)?/).test(navigator.userAgent);FastClick.prototype.deviceIsIOSWithBadTarget=FastClick.prototype.deviceIsIOS&&(/OS ([6-9]|\d{2})_\d/).test(navigator.userAgent);FastClick.prototype.needsClick=function(target){'use strict';switch(target.nodeName.toLowerCase()){case'button':case'select':case'textarea':if(target.disabled){return true}break;case'input':if((this.deviceIsIOS&&target.type==='file')||target.disabled){return true}break;case'label':case'video':return true}return(/\bneedsclick\b/).test(target.className)};FastClick.prototype.needsFocus=function(target){'use strict';switch(target.nodeName.toLowerCase()){case'textarea':case'select':return true;case'input':switch(target.type){case'button':case'checkbox':case'file':case'image':case'radio':case'submit':return false}return!target.disabled&&!target.readOnly;default:return(/\bneedsfocus\b/).test(target.className)}};FastClick.prototype.sendClick=function(targetElement,event){'use strict';var clickEvent,touch;if(document.activeElement&&document.activeElement!==targetElement){document.activeElement.blur()}touch=event.changedTouches[0];clickEvent=document.createEvent('MouseEvents');clickEvent.initMouseEvent('click',true,true,window,1,touch.screenX,touch.screenY,touch.clientX,touch.clientY,false,false,false,false,0,null);clickEvent.forwardedTouchEvent=true;targetElement.dispatchEvent(clickEvent)};FastClick.prototype.focus=function(targetElement){'use strict';var length;if(this.deviceIsIOS&&targetElement.setSelectionRange){length=targetElement.value.length;targetElement.setSelectionRange(length,length)}else{targetElement.focus()}};FastClick.prototype.updateScrollParent=function(targetElement){'use strict';var scrollParent,parentElement;scrollParent=targetElement.fastClickScrollParent;if(!scrollParent||!scrollParent.contains(targetElement)){parentElement=targetElement;do{if(parentElement.scrollHeight>parentElement.offsetHeight){scrollParent=parentElement;targetElement.fastClickScrollParent=parentElement;break}parentElement=parentElement.parentElement}while(parentElement)}if(scrollParent){scrollParent.fastClickLastScrollTop=scrollParent.scrollTop}};FastClick.prototype.getTargetElementFromEventTarget=function(eventTarget){'use strict';if(eventTarget.nodeType===Node.TEXT_NODE){return eventTarget.parentNode}return eventTarget};FastClick.prototype.onTouchStart=function(event){'use strict';var targetElement,touch,selection;if(event.targetTouches.length>1){return true}targetElement=this.getTargetElementFromEventTarget(event.target);touch=event.targetTouches[0];if(this.deviceIsIOS){selection=window.getSelection();if(selection.rangeCount&&!selection.isCollapsed){return true}if(!this.deviceIsIOS4){if(touch.identifier===this.lastTouchIdentifier){event.preventDefault();return false}this.lastTouchIdentifier=touch.identifier;this.updateScrollParent(targetElement)}}this.trackingClick=true;this.trackingClickStart=event.timeStamp;this.targetElement=targetElement;this.touchStartX=touch.pageX;this.touchStartY=touch.pageY;if((event.timeStamp-this.lastClickTime)<200){event.preventDefault()}return true};FastClick.prototype.touchHasMoved=function(event){'use strict';var touch=event.changedTouches[0],boundary=this.touchBoundary;if(Math.abs(touch.pageX-this.touchStartX)>boundary||Math.abs(touch.pageY-this.touchStartY)>boundary){return true}return false};FastClick.prototype.onTouchMove=function(event){'use strict';if(!this.trackingClick){return true}if(this.targetElement!==this.getTargetElementFromEventTarget(event.target)||this.touchHasMoved(event)){this.trackingClick=false;this.targetElement=null}return true};FastClick.prototype.findControl=function(labelElement){'use strict';if(labelElement.control!==undefined){return labelElement.control}if(labelElement.htmlFor){return document.getElementById(labelElement.htmlFor)}return labelElement.querySelector('button, input:not([type=hidden]), keygen, meter, output, progress, select, textarea')};FastClick.prototype.onTouchEnd=function(event){'use strict';var forElement,trackingClickStart,targetTagName,scrollParent,touch,targetElement=this.targetElement;if(!this.trackingClick){return true}if((event.timeStamp-this.lastClickTime)<200){this.cancelNextClick=true;return true}this.lastClickTime=event.timeStamp;trackingClickStart=this.trackingClickStart;this.trackingClick=false;this.trackingClickStart=0;if(this.deviceIsIOSWithBadTarget){touch=event.changedTouches[0];targetElement=document.elementFromPoint(touch.pageX-window.pageXOffset,touch.pageY-window.pageYOffset)||targetElement;targetElement.fastClickScrollParent=this.targetElement.fastClickScrollParent}targetTagName=targetElement.tagName.toLowerCase();if(targetTagName==='label'){forElement=this.findControl(targetElement);if(forElement){this.focus(targetElement);if(this.deviceIsAndroid){return false}targetElement=forElement}}else if(this.needsFocus(targetElement)){if((event.timeStamp-trackingClickStart)>100||(this.deviceIsIOS&&window.top!==window&&targetTagName==='input')){this.targetElement=null;return false}this.focus(targetElement);if(!this.deviceIsIOS4||targetTagName!=='select'){this.targetElement=null;event.preventDefault()}return false}if(this.deviceIsIOS&&!this.deviceIsIOS4){scrollParent=targetElement.fastClickScrollParent;if(scrollParent&&scrollParent.fastClickLastScrollTop!==scrollParent.scrollTop){return true}}if(!this.needsClick(targetElement)){event.preventDefault();this.sendClick(targetElement,event)}return false};FastClick.prototype.onTouchCancel=function(){'use strict';this.trackingClick=false;this.targetElement=null};FastClick.prototype.onMouse=function(event){'use strict';if(!this.targetElement){return true}if(event.forwardedTouchEvent){return true}if(!event.cancelable){return true}if(!this.needsClick(this.targetElement)||this.cancelNextClick){if(event.stopImmediatePropagation){event.stopImmediatePropagation()}else{event.propagationStopped=true}event.stopPropagation();event.preventDefault();return false}return true};FastClick.prototype.onClick=function(event){'use strict';var permitted;if(this.trackingClick){this.targetElement=null;this.trackingClick=false;return true}if(event.target.type==='submit'&&event.detail===0){return true}permitted=this.onMouse(event);if(!permitted){this.targetElement=null}return permitted};FastClick.prototype.destroy=function(){'use strict';var layer=this.layer;if(this.deviceIsAndroid){layer.removeEventListener('mouseover',this.onMouse,true);layer.removeEventListener('mousedown',this.onMouse,true);layer.removeEventListener('mouseup',this.onMouse,true)}layer.removeEventListener('click',this.onClick,true);layer.removeEventListener('touchstart',this.onTouchStart,false);layer.removeEventListener('touchmove',this.onTouchMove,false);layer.removeEventListener('touchend',this.onTouchEnd,false);layer.removeEventListener('touchcancel',this.onTouchCancel,false)};FastClick.notNeeded=function(layer){'use strict';var metaViewport;if(typeof window.ontouchstart==='undefined'){return true}if((/Chrome\/[0-9]+/).test(navigator.userAgent)){if(FastClick.prototype.deviceIsAndroid){metaViewport=document.querySelector('meta[name=viewport]');if(metaViewport&&metaViewport.content.indexOf('user-scalable=no')!==-1){return true}}else{return true}}if(layer.style.msTouchAction==='none'){return true}return false};FastClick.attach=function(layer){'use strict';return new FastClick(layer)};if(typeof define!=='undefined'&&define.amd){define(function(){'use strict';return FastClick})}else if(typeof module!=='undefined'&&module.exports){module.exports=FastClick.attach;module.exports.FastClick=FastClick}else{window.FastClick=FastClick}

Avoid too many return statements within this function.

Open

  function FastClick(layer){'use strict';var oldOnClick,self=this;this.trackingClick=false;this.trackingClickStart=0;this.targetElement=null;this.touchStartX=0;this.touchStartY=0;this.lastTouchIdentifier=0;this.touchBoundary=10;this.layer=layer;if(!layer||!layer.nodeType){throw new TypeError('Layer must be a document node');}this.onClick=function(){return FastClick.prototype.onClick.apply(self,arguments)};this.onMouse=function(){return FastClick.prototype.onMouse.apply(self,arguments)};this.onTouchStart=function(){return FastClick.prototype.onTouchStart.apply(self,arguments)};this.onTouchMove=function(){return FastClick.prototype.onTouchMove.apply(self,arguments)};this.onTouchEnd=function(){return FastClick.prototype.onTouchEnd.apply(self,arguments)};this.onTouchCancel=function(){return FastClick.prototype.onTouchCancel.apply(self,arguments)};if(FastClick.notNeeded(layer)){return}if(this.deviceIsAndroid){layer.addEventListener('mouseover',this.onMouse,true);layer.addEventListener('mousedown',this.onMouse,true);layer.addEventListener('mouseup',this.onMouse,true)}layer.addEventListener('click',this.onClick,true);layer.addEventListener('touchstart',this.onTouchStart,false);layer.addEventListener('touchmove',this.onTouchMove,false);layer.addEventListener('touchend',this.onTouchEnd,false);layer.addEventListener('touchcancel',this.onTouchCancel,false);if(!Event.prototype.stopImmediatePropagation){layer.removeEventListener=function(type,callback,capture){var rmv=Node.prototype.removeEventListener;if(type==='click'){rmv.call(layer,type,callback.hijacked||callback,capture)}else{rmv.call(layer,type,callback,capture)}};layer.addEventListener=function(type,callback,capture){var adv=Node.prototype.addEventListener;if(type==='click'){adv.call(layer,type,callback.hijacked||(callback.hijacked=function(event){if(!event.propagationStopped){callback(event)}}),capture)}else{adv.call(layer,type,callback,capture)}}}if(typeof layer.onclick==='function'){oldOnClick=layer.onclick;layer.addEventListener('click',function(event){oldOnClick(event)},false);layer.onclick=null}}FastClick.prototype.deviceIsAndroid=navigator.userAgent.indexOf('Android')>0;FastClick.prototype.deviceIsIOS=/iP(ad|hone|od)/.test(navigator.userAgent);FastClick.prototype.deviceIsIOS4=FastClick.prototype.deviceIsIOS&&(/OS 4_\d(_\d)?/).test(navigator.userAgent);FastClick.prototype.deviceIsIOSWithBadTarget=FastClick.prototype.deviceIsIOS&&(/OS ([6-9]|\d{2})_\d/).test(navigator.userAgent);FastClick.prototype.needsClick=function(target){'use strict';switch(target.nodeName.toLowerCase()){case'button':case'select':case'textarea':if(target.disabled){return true}break;case'input':if((this.deviceIsIOS&&target.type==='file')||target.disabled){return true}break;case'label':case'video':return true}return(/\bneedsclick\b/).test(target.className)};FastClick.prototype.needsFocus=function(target){'use strict';switch(target.nodeName.toLowerCase()){case'textarea':case'select':return true;case'input':switch(target.type){case'button':case'checkbox':case'file':case'image':case'radio':case'submit':return false}return!target.disabled&&!target.readOnly;default:return(/\bneedsfocus\b/).test(target.className)}};FastClick.prototype.sendClick=function(targetElement,event){'use strict';var clickEvent,touch;if(document.activeElement&&document.activeElement!==targetElement){document.activeElement.blur()}touch=event.changedTouches[0];clickEvent=document.createEvent('MouseEvents');clickEvent.initMouseEvent('click',true,true,window,1,touch.screenX,touch.screenY,touch.clientX,touch.clientY,false,false,false,false,0,null);clickEvent.forwardedTouchEvent=true;targetElement.dispatchEvent(clickEvent)};FastClick.prototype.focus=function(targetElement){'use strict';var length;if(this.deviceIsIOS&&targetElement.setSelectionRange){length=targetElement.value.length;targetElement.setSelectionRange(length,length)}else{targetElement.focus()}};FastClick.prototype.updateScrollParent=function(targetElement){'use strict';var scrollParent,parentElement;scrollParent=targetElement.fastClickScrollParent;if(!scrollParent||!scrollParent.contains(targetElement)){parentElement=targetElement;do{if(parentElement.scrollHeight>parentElement.offsetHeight){scrollParent=parentElement;targetElement.fastClickScrollParent=parentElement;break}parentElement=parentElement.parentElement}while(parentElement)}if(scrollParent){scrollParent.fastClickLastScrollTop=scrollParent.scrollTop}};FastClick.prototype.getTargetElementFromEventTarget=function(eventTarget){'use strict';if(eventTarget.nodeType===Node.TEXT_NODE){return eventTarget.parentNode}return eventTarget};FastClick.prototype.onTouchStart=function(event){'use strict';var targetElement,touch,selection;if(event.targetTouches.length>1){return true}targetElement=this.getTargetElementFromEventTarget(event.target);touch=event.targetTouches[0];if(this.deviceIsIOS){selection=window.getSelection();if(selection.rangeCount&&!selection.isCollapsed){return true}if(!this.deviceIsIOS4){if(touch.identifier===this.lastTouchIdentifier){event.preventDefault();return false}this.lastTouchIdentifier=touch.identifier;this.updateScrollParent(targetElement)}}this.trackingClick=true;this.trackingClickStart=event.timeStamp;this.targetElement=targetElement;this.touchStartX=touch.pageX;this.touchStartY=touch.pageY;if((event.timeStamp-this.lastClickTime)<200){event.preventDefault()}return true};FastClick.prototype.touchHasMoved=function(event){'use strict';var touch=event.changedTouches[0],boundary=this.touchBoundary;if(Math.abs(touch.pageX-this.touchStartX)>boundary||Math.abs(touch.pageY-this.touchStartY)>boundary){return true}return false};FastClick.prototype.onTouchMove=function(event){'use strict';if(!this.trackingClick){return true}if(this.targetElement!==this.getTargetElementFromEventTarget(event.target)||this.touchHasMoved(event)){this.trackingClick=false;this.targetElement=null}return true};FastClick.prototype.findControl=function(labelElement){'use strict';if(labelElement.control!==undefined){return labelElement.control}if(labelElement.htmlFor){return document.getElementById(labelElement.htmlFor)}return labelElement.querySelector('button, input:not([type=hidden]), keygen, meter, output, progress, select, textarea')};FastClick.prototype.onTouchEnd=function(event){'use strict';var forElement,trackingClickStart,targetTagName,scrollParent,touch,targetElement=this.targetElement;if(!this.trackingClick){return true}if((event.timeStamp-this.lastClickTime)<200){this.cancelNextClick=true;return true}this.lastClickTime=event.timeStamp;trackingClickStart=this.trackingClickStart;this.trackingClick=false;this.trackingClickStart=0;if(this.deviceIsIOSWithBadTarget){touch=event.changedTouches[0];targetElement=document.elementFromPoint(touch.pageX-window.pageXOffset,touch.pageY-window.pageYOffset)||targetElement;targetElement.fastClickScrollParent=this.targetElement.fastClickScrollParent}targetTagName=targetElement.tagName.toLowerCase();if(targetTagName==='label'){forElement=this.findControl(targetElement);if(forElement){this.focus(targetElement);if(this.deviceIsAndroid){return false}targetElement=forElement}}else if(this.needsFocus(targetElement)){if((event.timeStamp-trackingClickStart)>100||(this.deviceIsIOS&&window.top!==window&&targetTagName==='input')){this.targetElement=null;return false}this.focus(targetElement);if(!this.deviceIsIOS4||targetTagName!=='select'){this.targetElement=null;event.preventDefault()}return false}if(this.deviceIsIOS&&!this.deviceIsIOS4){scrollParent=targetElement.fastClickScrollParent;if(scrollParent&&scrollParent.fastClickLastScrollTop!==scrollParent.scrollTop){return true}}if(!this.needsClick(targetElement)){event.preventDefault();this.sendClick(targetElement,event)}return false};FastClick.prototype.onTouchCancel=function(){'use strict';this.trackingClick=false;this.targetElement=null};FastClick.prototype.onMouse=function(event){'use strict';if(!this.targetElement){return true}if(event.forwardedTouchEvent){return true}if(!event.cancelable){return true}if(!this.needsClick(this.targetElement)||this.cancelNextClick){if(event.stopImmediatePropagation){event.stopImmediatePropagation()}else{event.propagationStopped=true}event.stopPropagation();event.preventDefault();return false}return true};FastClick.prototype.onClick=function(event){'use strict';var permitted;if(this.trackingClick){this.targetElement=null;this.trackingClick=false;return true}if(event.target.type==='submit'&&event.detail===0){return true}permitted=this.onMouse(event);if(!permitted){this.targetElement=null}return permitted};FastClick.prototype.destroy=function(){'use strict';var layer=this.layer;if(this.deviceIsAndroid){layer.removeEventListener('mouseover',this.onMouse,true);layer.removeEventListener('mousedown',this.onMouse,true);layer.removeEventListener('mouseup',this.onMouse,true)}layer.removeEventListener('click',this.onClick,true);layer.removeEventListener('touchstart',this.onTouchStart,false);layer.removeEventListener('touchmove',this.onTouchMove,false);layer.removeEventListener('touchend',this.onTouchEnd,false);layer.removeEventListener('touchcancel',this.onTouchCancel,false)};FastClick.notNeeded=function(layer){'use strict';var metaViewport;if(typeof window.ontouchstart==='undefined'){return true}if((/Chrome\/[0-9]+/).test(navigator.userAgent)){if(FastClick.prototype.deviceIsAndroid){metaViewport=document.querySelector('meta[name=viewport]');if(metaViewport&&metaViewport.content.indexOf('user-scalable=no')!==-1){return true}}else{return true}}if(layer.style.msTouchAction==='none'){return true}return false};FastClick.attach=function(layer){'use strict';return new FastClick(layer)};if(typeof define!=='undefined'&&define.amd){define(function(){'use strict';return FastClick})}else if(typeof module!=='undefined'&&module.exports){module.exports=FastClick.attach;module.exports.FastClick=FastClick}else{window.FastClick=FastClick}