app/assets/javascripts/ckeditor/filebrowser/javascripts/fileuploader.js
/**
* http://github.com/valums/file-uploader
*
* Multiple file upload component with progress-bar, drag-and-drop.
* © 2010 Andrew Valums ( andrew(at)valums.com )
*
* Licensed under GNU GPL 2 or later, see license.txt.
*/
//
// Helper functions
//
var qq = qq || {};
/**
* Adds all missing properties from second obj to first obj
*/
qq.extend = function(first, second){
for (var prop in second){
first[prop] = second[prop];
}
};
/**
* Searches for a given element in the array, returns -1 if it is not present.
* @param {Number} [from] The index at which to begin the search
*/
qq.indexOf = function(arr, elt, from){
if (arr.indexOf) return arr.indexOf(elt, from);
from = from || 0;
var len = arr.length;
if (from < 0) from += len;
for (; from < len; from++){
if (from in arr && arr[from] === elt){
return from;
}
}
return -1;
};
qq.getUniqueId = (function(){
var id = 0;
return function(){ return id++; };
})();
//
// Events
qq.attach = function(element, type, fn){
if (element.addEventListener){
element.addEventListener(type, fn, false);
} else if (element.attachEvent){
element.attachEvent('on' + type, fn);
}
};
qq.detach = function(element, type, fn){
if (element.removeEventListener){
element.removeEventListener(type, fn, false);
} else if (element.attachEvent){
element.detachEvent('on' + type, fn);
}
};
qq.preventDefault = function(e){
if (e.preventDefault){
e.preventDefault();
} else{
e.returnValue = false;
}
};
//
// Node manipulations
/**
* Insert node a before node b.
*/
qq.insertBefore = function(a, b){
b.parentNode.insertBefore(a, b);
};
qq.remove = function(element){
element.parentNode.removeChild(element);
};
qq.contains = function(parent, descendant){
// compareposition returns false in this case
if (parent == descendant) return true;
if (parent.contains){
return parent.contains(descendant);
} else {
return !!(descendant.compareDocumentPosition(parent) & 8);
}
};
/**
* Creates and returns element from html string
* Uses innerHTML to create an element
*/
qq.toElement = (function(){
var div = document.createElement('div');
return function(html){
div.innerHTML = html;
var element = div.firstChild;
div.removeChild(element);
return element;
};
})();
//
// Node properties and attributes
/**
* Sets styles for an element.
* Fixes opacity in IE6-8.
*/
qq.css = function(element, styles){
if (styles.opacity != null){
if (typeof element.style.opacity != 'string' && typeof(element.filters) != 'undefined'){
styles.filter = 'alpha(opacity=' + Math.round(100 * styles.opacity) + ')';
}
}
qq.extend(element.style, styles);
};
qq.hasClass = function(element, name){
var re = new RegExp('(^| )' + name + '( |$)');
return re.test(element.className);
};
qq.addClass = function(element, name){
if (!qq.hasClass(element, name)){
element.className += ' ' + name;
}
};
qq.removeClass = function(element, name){
var re = new RegExp('(^| )' + name + '( |$)');
element.className = element.className.replace(re, ' ').replace(/^\s+|\s+$/g, "");
};
qq.setText = function(element, text){
element.innerText = text;
element.textContent = text;
};
//
// Selecting elements
qq.children = function(element){
var children = [],
child = element.firstChild;
while (child){
if (child.nodeType == 1){
children.push(child);
}
child = child.nextSibling;
}
return children;
};
qq.getByClass = function(element, className){
if (element.querySelectorAll){
return element.querySelectorAll('.' + className);
}
var result = [];
var candidates = element.getElementsByTagName("*");
var len = candidates.length;
for (var i = 0; i < len; i++){
if (qq.hasClass(candidates[i], className)){
result.push(candidates[i]);
}
}
return result;
};
/**
* obj2url() takes a json-object as argument and generates
* a querystring. pretty much like jQuery.param()
*
* how to use:
*
* `qq.obj2url({a:'b',c:'d'},'http://any.url/upload?otherParam=value');`
*
* will result in:
*
* `http://any.url/upload?otherParam=value&a=b&c=d`
*
* @param Object JSON-Object
* @param String current querystring-part
* @return String encoded querystring
*/
qq.obj2url = function(obj, temp, prefixDone){
var uristrings = [],
prefix = '&',
add = function(nextObj, i){
var nextTemp = temp
? (/\[\]$/.test(temp)) // prevent double-encoding
? temp
: temp+'['+i+']'
: i;
if ((nextTemp != 'undefined') && (i != 'undefined')) {
uristrings.push(
(typeof nextObj === 'object')
? qq.obj2url(nextObj, nextTemp, true)
: (Object.prototype.toString.call(nextObj) === '[object Function]')
? encodeURIComponent(nextTemp) + '=' + encodeURIComponent(nextObj())
: encodeURIComponent(nextTemp) + '=' + encodeURIComponent(nextObj)
);
}
};
if (!prefixDone && temp) {
prefix = (/\?/.test(temp)) ? (/\?$/.test(temp)) ? '' : '&' : '?';
uristrings.push(temp);
uristrings.push(qq.obj2url(obj));
} else if ((Object.prototype.toString.call(obj) === '[object Array]') && (typeof obj != 'undefined') ) {
// we wont use a for-in-loop on an array (performance)
for (var i = 0, len = obj.length; i < len; ++i){
add(obj[i], i);
}
} else if ((typeof obj != 'undefined') && (obj !== null) && (typeof obj === "object")){
// for anything else but a scalar, we will use for-in-loop
for (var i in obj){
add(obj[i], i);
}
} else {
uristrings.push(encodeURIComponent(temp) + '=' + encodeURIComponent(obj));
}
return uristrings.join(prefix)
.replace(/^&/, '')
.replace(/%20/g, '+');
};
//
//
// Uploader Classes
//
//
var qq = qq || {};
/**
* Creates upload button, validates upload, but doesn't create file list or dd.
*/
qq.FileUploaderBasic = function(o){
this._options = {
// set to true to see the server response
debug: false,
action: '/server/upload',
params: {},
button: null,
multiple: true,
maxConnections: 3,
method: 'POST',
fieldName: 'qqfile',
// validation
allowedExtensions: [],
sizeLimit: 0,
minSizeLimit: 0,
maxFilesCount: 0, // 0 - no limit, works only in multiple mode
minFilesCount: 0, // 0 - no limit, works only in multiple mode
// events
// return false to cancel submit
onSubmit: function(id, fileName){},
onProgress: function(id, fileName, loaded, total){},
onComplete: function(id, fileName, responseJSON){},
onCancel: function(id, fileName){},
// messages
messages: {
typeError: "{file} has invalid extension. Only {extensions} are allowed.",
sizeError: "{file} is too large, maximum file size is {sizeLimit}.",
minSizeError: "{file} is too small, minimum file size is {minSizeLimit}.",
emptyError: "{file} is empty, please select files again without it.",
onLeave: "The files are being uploaded, if you leave now the upload will be cancelled.",
maxFilesError: "You must select less then {maxFilesCount} files.",
minFilesError: "You must select more then {minFilesCount} files."
},
showMessage: function(message){
alert(message);
}
};
qq.extend(this._options, o);
// number of files being uploaded
this._filesInProgress = 0;
// number of files was processed
this._filesUploaded = 0;
this._handler = this._createUploadHandler();
if (this._options.button){
this._button = this._createUploadButton(this._options.button);
}
this._preventLeaveInProgress();
};
qq.FileUploaderBasic.prototype = {
setParams: function(params){
this._options.params = params;
},
getInProgress: function(){
return this._filesInProgress;
},
_createUploadButton: function(element){
var self = this;
return new qq.UploadButton({
element: element,
multiple: this._options.multiple && qq.UploadHandlerXhr.isSupported(),
onChange: function(input){
self._onInputChange(input);
}
});
},
_createUploadHandler: function(){
var self = this,
handlerClass;
if(qq.UploadHandlerXhr.isSupported()){
handlerClass = 'UploadHandlerXhr';
} else {
handlerClass = 'UploadHandlerForm';
}
var handler = new qq[handlerClass]({
debug: this._options.debug,
action: this._options.action,
maxConnections: this._options.maxConnections,
fieldName: this._options.fieldName,
method: this._options.method,
onProgress: function(id, fileName, loaded, total){
self._onProgress(id, fileName, loaded, total);
self._options.onProgress(id, fileName, loaded, total);
},
onComplete: function(id, fileName, result){
self._onComplete(id, fileName, result);
self._options.onComplete(id, fileName, result);
},
onCancel: function(id, fileName){
self._onCancel(id, fileName);
self._options.onCancel(id, fileName);
}
});
return handler;
},
_preventLeaveInProgress: function(){
var self = this;
qq.attach(window, 'beforeunload', function(e){
if (!self._filesInProgress){return;}
var e = e || window.event;
// for ie, ff
e.returnValue = self._options.messages.onLeave;
// for webkit
return self._options.messages.onLeave;
});
},
_onSubmit: function(id, fileName){
this._filesInProgress++;
},
_onProgress: function(id, fileName, loaded, total){
},
_onComplete: function(id, fileName, result){
this._filesInProgress--;
if (result.error){
this._options.showMessage(result.error);
} else {
this._filesUploaded++;
}
},
_onCancel: function(id, fileName){
this._filesInProgress--;
},
_onInputChange: function(input){
if (this._handler instanceof qq.UploadHandlerXhr){
this._uploadFileList(input.files);
} else {
if (this._validateFile(input)){
this._uploadFile(input);
}
}
this._button.reset();
},
_uploadFileList: function(files){
if ( this._validateFiles(files) ) {
for (var i=0; i<files.length; i++){
this._uploadFile(files[i]);
}
}
},
_uploadFile: function(fileContainer){
var id = this._handler.add(fileContainer);
var fileName = this._handler.getName(id);
if (this._options.onSubmit(id, fileName) !== false){
this._onSubmit(id, fileName);
this._handler.upload(id, this._options.params);
}
},
_validateFiles: function(files){
var uploadedCount = this._filesUploaded + files.length;
if (this._options.maxFilesCount > 0) {
if ( uploadedCount > this._options.maxFilesCount) {
this._error('maxFilesError', 'name');
return false;
}
}
if (this._options.minFilesCount > 0) {
if ( uploadedCount < this._options.minFilesCount) {
this._error('minFilesError', 'name');
return false;
}
}
for (var i=0; i<files.length; i++){
if ( !this._validateFile(files[i])){
return false;
}
}
return true;
},
_validateFile: function(file){
var name, size;
if (file.value){
// it is a file input
// get input value and remove path to normalize
name = file.value.replace(/.*(\/|\\)/, "");
} else {
// fix missing properties in Safari
name = file.fileName != null ? file.fileName : file.name;
size = file.fileSize != null ? file.fileSize : file.size;
}
if (! this._isAllowedExtension(name)){
this._error('typeError', name);
return false;
} else if (size === 0){
this._error('emptyError', name);
return false;
} else if (size && this._options.sizeLimit && size > this._options.sizeLimit){
this._error('sizeError', name);
return false;
} else if (size && size < this._options.minSizeLimit){
this._error('minSizeError', name);
return false;
}
return true;
},
_error: function(code, fileName){
var message = this._options.messages[code];
function r(name, replacement){ message = message.replace(name, replacement); }
r('{file}', this._formatFileName(fileName));
r('{extensions}', this._options.allowedExtensions.join(', '));
r('{sizeLimit}', this._formatSize(this._options.sizeLimit));
r('{minSizeLimit}', this._formatSize(this._options.minSizeLimit));
r('{maxFilesCount}', this._options.maxFilesCount);
r('{minFilesCount}', this._options.minFilesCount);
this._options.showMessage(message);
},
_formatFileName: function(name){
if (name.length > 33){
name = name.slice(0, 19) + '...' + name.slice(-13);
}
return name;
},
_isAllowedExtension: function(fileName){
var ext = (-1 !== fileName.indexOf('.')) ? fileName.replace(/.*[.]/, '').toLowerCase() : '';
var allowed = this._options.allowedExtensions;
if (!allowed.length){return true;}
for (var i=0; i<allowed.length; i++){
if (allowed[i].toLowerCase() == ext){ return true;}
}
return false;
},
_formatSize: function(bytes){
var i = -1;
do {
bytes = bytes / 1024;
i++;
} while (bytes > 99);
return Math.max(bytes, 0.1).toFixed(1) + ['kB', 'MB', 'GB', 'TB', 'PB', 'EB'][i];
}
};
/**
* Class that creates upload widget with drag-and-drop and file list
* @inherits qq.FileUploaderBasic
*/
qq.FileUploader = function(o){
// call parent constructor
qq.FileUploaderBasic.apply(this, arguments);
// additional options
qq.extend(this._options, {
element: null,
// if set, will be used instead of qq-upload-list in template
listElement: null,
template: '<div class="qq-uploader">' +
'<div class="qq-upload-drop-area"><span>Drop files here to upload</span></div>' +
'<div class="qq-upload-button">Upload a file</div>' +
'<ul class="qq-upload-list"></ul>' +
'</div>',
// template for one item in file list
fileTemplate: '<li>' +
'<span class="qq-upload-file"></span>' +
'<span class="qq-upload-spinner"></span>' +
'<span class="qq-upload-size"></span>' +
'<a class="qq-upload-cancel" href="#">Cancel</a>' +
'<span class="qq-upload-failed-text">Failed</span>' +
'</li>',
classes: {
// used to get elements from templates
button: 'qq-upload-button',
drop: 'qq-upload-drop-area',
dropActive: 'qq-upload-drop-area-active',
list: 'qq-upload-list',
file: 'qq-upload-file',
spinner: 'qq-upload-spinner',
size: 'qq-upload-size',
cancel: 'qq-upload-cancel',
// added to list item when upload completes
// used in css to hide progress spinner
success: 'qq-upload-success',
fail: 'qq-upload-fail'
}
});
// overwrite options with user supplied
qq.extend(this._options, o);
this._element = this._options.element;
this._element.innerHTML = this._options.template;
this._listElement = this._options.listElement || this._find(this._element, 'list');
this._classes = this._options.classes;
this._button = this._createUploadButton(this._find(this._element, 'button'));
this._bindCancelEvent();
this._setupDragDrop();
};
// inherit from Basic Uploader
qq.extend(qq.FileUploader.prototype, qq.FileUploaderBasic.prototype);
qq.extend(qq.FileUploader.prototype, {
/**
* Gets one of the elements listed in this._options.classes
**/
_find: function(parent, type){
var element = qq.getByClass(parent, this._options.classes[type])[0];
if (!element){
throw new Error('element not found ' + type);
}
return element;
},
_setupDragDrop: function(){
var self = this,
dropArea = this._find(this._element, 'drop');
var dz = new qq.UploadDropZone({
element: dropArea,
onEnter: function(e){
qq.addClass(dropArea, self._classes.dropActive);
e.stopPropagation();
},
onLeave: function(e){
e.stopPropagation();
},
onLeaveNotDescendants: function(e){
qq.removeClass(dropArea, self._classes.dropActive);
},
onDrop: function(e){
dropArea.style.display = 'none';
qq.removeClass(dropArea, self._classes.dropActive);
self._uploadFileList(e.dataTransfer.files);
}
});
dropArea.style.display = 'none';
qq.attach(document, 'dragenter', function(e){
if (!dz._isValidFileDrag(e)) return;
dropArea.style.display = 'block';
});
qq.attach(document, 'dragleave', function(e){
if (!dz._isValidFileDrag(e)) return;
var relatedTarget = document.elementFromPoint(e.clientX, e.clientY);
// only fire when leaving document out
if ( ! relatedTarget || relatedTarget.nodeName == "HTML"){
dropArea.style.display = 'none';
}
});
},
_onSubmit: function(id, fileName){
qq.FileUploaderBasic.prototype._onSubmit.apply(this, arguments);
this._addToList(id, fileName);
},
_onProgress: function(id, fileName, loaded, total){
qq.FileUploaderBasic.prototype._onProgress.apply(this, arguments);
var item = this._getItemByFileId(id);
var size = this._find(item, 'size');
size.style.display = 'inline';
var text;
if (loaded != total){
text = Math.round(loaded / total * 100) + '% from ' + this._formatSize(total);
} else {
text = this._formatSize(total);
}
qq.setText(size, text);
},
_onComplete: function(id, fileName, result){
qq.FileUploaderBasic.prototype._onComplete.apply(this, arguments);
// mark completed
var item = this._getItemByFileId(id);
qq.remove(this._find(item, 'cancel'));
qq.remove(this._find(item, 'spinner'));
if (result.success){
qq.addClass(item, this._classes.success);
} else {
qq.addClass(item, this._classes.fail);
}
},
_addToList: function(id, fileName){
var item = qq.toElement(this._options.fileTemplate);
item.qqFileId = id;
var fileElement = this._find(item, 'file');
qq.setText(fileElement, this._formatFileName(fileName));
this._find(item, 'size').style.display = 'none';
this._listElement.appendChild(item);
},
_getItemByFileId: function(id){
var item = this._listElement.firstChild;
// there can't be txt nodes in dynamically created list
// and we can use nextSibling
while (item){
if (item.qqFileId == id) return item;
item = item.nextSibling;
}
},
/**
* delegate click event for cancel link
**/
_bindCancelEvent: function(){
var self = this,
list = this._listElement;
qq.attach(list, 'click', function(e){
e = e || window.event;
var target = e.target || e.srcElement;
if (qq.hasClass(target, self._classes.cancel)){
qq.preventDefault(e);
var item = target.parentNode;
self._handler.cancel(item.qqFileId);
qq.remove(item);
}
});
}
});
qq.UploadDropZone = function(o){
this._options = {
element: null,
onEnter: function(e){},
onLeave: function(e){},
// is not fired when leaving element by hovering descendants
onLeaveNotDescendants: function(e){},
onDrop: function(e){}
};
qq.extend(this._options, o);
this._element = this._options.element;
this._disableDropOutside();
this._attachEvents();
};
qq.UploadDropZone.prototype = {
_disableDropOutside: function(e){
// run only once for all instances
if (!qq.UploadDropZone.dropOutsideDisabled ){
qq.attach(document, 'dragover', function(e){
if (e.dataTransfer){
e.dataTransfer.dropEffect = 'none';
e.preventDefault();
}
});
qq.UploadDropZone.dropOutsideDisabled = true;
}
},
_attachEvents: function(){
var self = this;
qq.attach(self._element, 'dragover', function(e){
if (!self._isValidFileDrag(e)) return;
var effect = e.dataTransfer.effectAllowed;
if (effect == 'move' || effect == 'linkMove'){
e.dataTransfer.dropEffect = 'move'; // for FF (only move allowed)
} else {
e.dataTransfer.dropEffect = 'copy'; // for Chrome
}
e.stopPropagation();
e.preventDefault();
});
qq.attach(self._element, 'dragenter', function(e){
if (!self._isValidFileDrag(e)) return;
self._options.onEnter(e);
});
qq.attach(self._element, 'dragleave', function(e){
if (!self._isValidFileDrag(e)) return;
self._options.onLeave(e);
var relatedTarget = document.elementFromPoint(e.clientX, e.clientY);
// do not fire when moving a mouse over a descendant
if (qq.contains(this, relatedTarget)) return;
self._options.onLeaveNotDescendants(e);
});
qq.attach(self._element, 'drop', function(e){
if (!self._isValidFileDrag(e)) return;
e.preventDefault();
self._options.onDrop(e);
});
},
_isValidFileDrag: function(e){
var dt = e.dataTransfer,
// do not check dt.types.contains in webkit, because it crashes safari 4
isWebkit = navigator.userAgent.indexOf("AppleWebKit") > -1;
// dt.effectAllowed is none in Safari 5
// dt.types.contains check is for firefox
return dt && dt.effectAllowed != 'none' &&
(dt.files || (!isWebkit && dt.types.contains && dt.types.contains('Files')));
}
};
qq.UploadButton = function(o){
this._options = {
element: null,
// if set to true adds multiple attribute to file input
multiple: false,
// name attribute of file input
name: 'file',
onChange: function(input){},
hoverClass: 'qq-upload-button-hover',
focusClass: 'qq-upload-button-focus'
};
qq.extend(this._options, o);
this._element = this._options.element;
// make button suitable container for input
qq.css(this._element, {
position: 'relative',
overflow: 'hidden',
// Make sure browse button is in the right side
// in Internet Explorer
direction: 'ltr'
});
this._input = this._createInput();
};
qq.UploadButton.prototype = {
/* returns file input element */
getInput: function(){
return this._input;
},
/* cleans/recreates the file input */
reset: function(){
if (this._input.parentNode){
qq.remove(this._input);
}
qq.removeClass(this._element, this._options.focusClass);
this._input = this._createInput();
},
_createInput: function(){
var input = document.createElement("input");
if (this._options.multiple){
input.setAttribute("multiple", "multiple");
}
input.setAttribute("type", "file");
input.setAttribute("name", this._options.name);
qq.css(input, {
position: 'absolute',
// in Opera only 'browse' button
// is clickable and it is located at
// the right side of the input
right: 0,
top: 0,
fontFamily: 'Arial',
// 4 persons reported this, the max values that worked for them were 243, 236, 236, 118
fontSize: '118px',
margin: 0,
padding: 0,
cursor: 'pointer',
opacity: 0
});
this._element.appendChild(input);
var self = this;
qq.attach(input, 'change', function(){
self._options.onChange(input);
});
qq.attach(input, 'mouseover', function(){
qq.addClass(self._element, self._options.hoverClass);
});
qq.attach(input, 'mouseout', function(){
qq.removeClass(self._element, self._options.hoverClass);
});
qq.attach(input, 'focus', function(){
qq.addClass(self._element, self._options.focusClass);
});
qq.attach(input, 'blur', function(){
qq.removeClass(self._element, self._options.focusClass);
});
// IE and Opera, unfortunately have 2 tab stops on file input
// which is unacceptable in our case, disable keyboard access
if (window.attachEvent){
// it is IE or Opera
input.setAttribute('tabIndex', "-1");
}
return input;
}
};
/**
* Class for uploading files, uploading itself is handled by child classes
*/
qq.UploadHandlerAbstract = function(o){
this._options = {
debug: false,
action: '/upload.php',
method: 'POST',
fieldName: 'qqfile',
// maximum number of concurrent uploads
maxConnections: 999,
onProgress: function(id, fileName, loaded, total){},
onComplete: function(id, fileName, response){},
onCancel: function(id, fileName){}
};
qq.extend(this._options, o);
this._queue = [];
// params for files in queue
this._params = [];
};
qq.UploadHandlerAbstract.prototype = {
log: function(str){
if (this._options.debug && window.console) console.log('[uploader] ' + str);
},
/**
* Adds file or file input to the queue
* @returns id
**/
add: function(file){},
/**
* Sends the file identified by id and additional query params to the server
*/
upload: function(id, params){
var len = this._queue.push(id);
var copy = {};
qq.extend(copy, params);
this._params[id] = copy;
// if too many active uploads, wait...
if (len <= this._options.maxConnections){
this._upload(id, this._params[id]);
}
},
/**
* Cancels file upload by id
*/
cancel: function(id){
this._cancel(id);
this._dequeue(id);
},
/**
* Cancells all uploads
*/
cancelAll: function(){
for (var i=0; i<this._queue.length; i++){
this._cancel(this._queue[i]);
}
this._queue = [];
},
/**
* Returns name of the file identified by id
*/
getName: function(id){},
/**
* Returns size of the file identified by id
*/
getSize: function(id){},
/**
* Returns id of files being uploaded or
* waiting for their turn
*/
getQueue: function(){
return this._queue;
},
/**
* Actual upload method
*/
_upload: function(id){},
/**
* Actual cancel method
*/
_cancel: function(id){},
/**
* Removes element from queue, starts upload of next
*/
_dequeue: function(id){
var i = qq.indexOf(this._queue, id);
this._queue.splice(i, 1);
var max = this._options.maxConnections;
if (this._queue.length >= max && i < max){
var nextId = this._queue[max-1];
this._upload(nextId, this._params[nextId]);
}
}
};
/**
* Class for uploading files using form and iframe
* @inherits qq.UploadHandlerAbstract
*/
qq.UploadHandlerForm = function(o){
qq.UploadHandlerAbstract.apply(this, arguments);
this._inputs = {};
};
// @inherits qq.UploadHandlerAbstract
qq.extend(qq.UploadHandlerForm.prototype, qq.UploadHandlerAbstract.prototype);
qq.extend(qq.UploadHandlerForm.prototype, {
add: function(fileInput){
fileInput.setAttribute('name', this._options.fieldName);
var id = 'qq-upload-handler-iframe' + qq.getUniqueId();
this._inputs[id] = fileInput;
// remove file input from DOM
if (fileInput.parentNode){
qq.remove(fileInput);
}
return id;
},
getName: function(id){
// get input value and remove path to normalize
return this._inputs[id].value.replace(/.*(\/|\\)/, "");
},
_cancel: function(id){
this._options.onCancel(id, this.getName(id));
delete this._inputs[id];
var iframe = document.getElementById(id);
if (iframe){
// to cancel request set src to something else
// we use src="javascript:false;" because it doesn't
// trigger ie6 prompt on https
iframe.setAttribute('src', 'javascript:false;');
qq.remove(iframe);
}
},
_upload: function(id, params){
var input = this._inputs[id];
if (!input){
throw new Error('file with passed id was not added, or already uploaded or cancelled');
}
var fileName = this.getName(id);
var iframe = this._createIframe(id);
var form = this._createForm(iframe, params);
form.appendChild(input);
var self = this;
this._attachLoadEvent(iframe, function(){
self.log('iframe loaded');
var response = self._getIframeContentJSON(iframe);
self._options.onComplete(id, fileName, response);
self._dequeue(id);
delete self._inputs[id];
// timeout added to fix busy state in FF3.6
setTimeout(function(){
qq.remove(iframe);
}, 1);
});
form.submit();
qq.remove(form);
return id;
},
_attachLoadEvent: function(iframe, callback){
qq.attach(iframe, 'load', function(){
// when we remove iframe from dom
// the request stops, but in IE load
// event fires
if (!iframe.parentNode){
return;
}
// fixing Opera 10.53
if (iframe.contentDocument &&
iframe.contentDocument.body &&
iframe.contentDocument.body.innerHTML == "false"){
// In Opera event is fired second time
// when body.innerHTML changed from false
// to server response approx. after 1 sec
// when we upload file with iframe
return;
}
callback();
});
},
/**
* Returns json object received by iframe from server.
*/
_getIframeContentJSON: function(iframe){
// iframe.contentWindow.document - for IE<7
var doc = iframe.contentDocument ? iframe.contentDocument: iframe.contentWindow.document,
response;
this.log("converting iframe's innerHTML to JSON");
this.log("innerHTML = " + doc.body.innerHTML);
try {
response = eval("(" + doc.body.innerHTML + ")");
} catch(err){
response = {};
}
return response;
},
/**
* Creates iframe with unique name
*/
_createIframe: function(id){
// We can't use following code as the name attribute
// won't be properly registered in IE6, and new window
// on form submit will open
// var iframe = document.createElement('iframe');
// iframe.setAttribute('name', id);
var iframe = qq.toElement('<iframe src="javascript:false;" name="' + id + '" />');
// src="javascript:false;" removes ie6 prompt on https
iframe.setAttribute('id', id);
iframe.style.display = 'none';
document.body.appendChild(iframe);
return iframe;
},
/**
* Creates form, that will be submitted to iframe
*/
_createForm: function(iframe, params){
// We can't use the following code in IE6
// var form = document.createElement('form');
// form.setAttribute('method', 'post');
// form.setAttribute('enctype', 'multipart/form-data');
// Because in this case file won't be attached to request
var form = qq.toElement('<form enctype="multipart/form-data"></form>');
var queryString = qq.obj2url(params, this._options.action);
form.setAttribute('method', this._options.method);
form.setAttribute('action', queryString);
form.setAttribute('target', iframe.name);
form.style.display = 'none';
// Rails CSRFProtection
var token = $('meta[name="csrf-token"]').attr('content');
var param = $('meta[name="csrf-param"]').attr('content');
var input = qq.toElement('<input type="hidden" />');
input.setAttribute('name', param);
input.setAttribute('value', token);
form.appendChild(input);
document.body.appendChild(form);
return form;
}
});
/**
* Class for uploading files using xhr
* @inherits qq.UploadHandlerAbstract
*/
qq.UploadHandlerXhr = function(o){
qq.UploadHandlerAbstract.apply(this, arguments);
this._files = [];
this._xhrs = [];
// current loaded size in bytes for each file
this._loaded = [];
};
// static method
qq.UploadHandlerXhr.isSupported = function(){
var input = document.createElement('input');
input.type = 'file';
return (
'multiple' in input &&
typeof File != "undefined" &&
typeof (new XMLHttpRequest()).upload != "undefined" );
};
// @inherits qq.UploadHandlerAbstract
qq.extend(qq.UploadHandlerXhr.prototype, qq.UploadHandlerAbstract.prototype)
qq.extend(qq.UploadHandlerXhr.prototype, {
/**
* Adds file to the queue
* Returns id to use with upload, cancel
**/
add: function(file){
if (!(file instanceof File)){
throw new Error('Passed obj in not a File (in qq.UploadHandlerXhr)');
}
return this._files.push(file) - 1;
},
getName: function(id){
var file = this._files[id];
// fix missing name in Safari 4
return file.fileName != null ? file.fileName : file.name;
},
getSize: function(id){
var file = this._files[id];
return file.fileSize != null ? file.fileSize : file.size;
},
/**
* Returns uploaded bytes for file identified by id
*/
getLoaded: function(id){
return this._loaded[id] || 0;
},
/**
* Sends the file identified by id and additional query params to the server
* @param {Object} params name-value string pairs
*/
_upload: function(id, params){
var file = this._files[id],
name = this.getName(id),
size = this.getSize(id);
this._loaded[id] = 0;
var xhr = this._xhrs[id] = new XMLHttpRequest();
var self = this;
xhr.upload.onprogress = function(e){
if (e.lengthComputable){
self._loaded[id] = e.loaded;
self._options.onProgress(id, name, e.loaded, e.total);
}
};
xhr.onreadystatechange = function(){
if (xhr.readyState == 4){
self._onComplete(id, xhr);
}
};
// build query string
params = params || {};
params[this._options.fieldName] = name;
var queryString = qq.obj2url(params, this._options.action);
xhr.open(this._options.method, queryString, true);
xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
xhr.setRequestHeader("X-File-Name", encodeURIComponent(name));
xhr.setRequestHeader('X-File-Size', size);
xhr.setRequestHeader('X-File-Type', file.type);
xhr.setRequestHeader("Content-Type", "application/octet-stream");
// Rails CSRFProtection
if ($.rails) $.rails.CSRFProtection(xhr);
xhr.send(file);
},
_onComplete: function(id, xhr){
// the request was aborted/cancelled
if (!this._files[id]) return;
var name = this.getName(id);
var size = this.getSize(id);
this._options.onProgress(id, name, size, size);
if ([200, 201].indexOf( xhr.status ) > -1){
this.log("xhr - server response received");
this.log("responseText = " + xhr.responseText);
var response;
try {
response = eval("(" + xhr.responseText + ")");
} catch(err){
response = {};
}
this._options.onComplete(id, name, response);
} else {
this._options.onComplete(id, name, {});
}
this._files[id] = null;
this._xhrs[id] = null;
this._dequeue(id);
},
_cancel: function(id){
this._options.onCancel(id, this.getName(id));
this._files[id] = null;
if (this._xhrs[id]){
this._xhrs[id].abort();
this._xhrs[id] = null;
}
}
});