2 * http://github.com/valums/file-uploader
4 * Multiple file upload component with progress-bar, drag-and-drop.
5 * © 2010 Andrew Valums ( andrew(at)valums.com )
7 * Licensed under GNU GPL 2 or later, see license.txt.
17 * Adds all missing properties from second obj to first obj
19 qq.extend = function(first, second){
20 for (var prop in second){
21 first[prop] = second[prop];
26 * Searches for a given element in the array, returns -1 if it is not present.
27 * @param {Number} [from] The index at which to begin the search
29 qq.indexOf = function(arr, elt, from){
30 if (arr.indexOf) return arr.indexOf(elt, from);
35 if (from < 0) from += len;
37 for (; from < len; from++){
38 if (from in arr && arr[from] === elt){
45 qq.getUniqueId = (function(){
47 return function(){ return id++; };
53 qq.attach = function(element, type, fn){
54 if (element.addEventListener){
55 element.addEventListener(type, fn, false);
56 } else if (element.attachEvent){
57 element.attachEvent('on' + type, fn);
60 qq.detach = function(element, type, fn){
61 if (element.removeEventListener){
62 element.removeEventListener(type, fn, false);
63 } else if (element.attachEvent){
64 element.detachEvent('on' + type, fn);
68 qq.preventDefault = function(e){
69 if (e.preventDefault){
72 e.returnValue = false;
80 * Insert node a before node b.
82 qq.insertBefore = function(a, b){
83 b.parentNode.insertBefore(a, b);
85 qq.remove = function(element){
86 element.parentNode.removeChild(element);
89 qq.contains = function(parent, descendant){
90 // compareposition returns false in this case
91 if (parent == descendant) return true;
94 return parent.contains(descendant);
96 return !!(descendant.compareDocumentPosition(parent) & 8);
101 * Creates and returns element from html string
102 * Uses innerHTML to create an element
104 qq.toElement = (function(){
105 var div = document.createElement('div');
106 return function(html){
107 div.innerHTML = html;
108 var element = div.firstChild;
109 div.removeChild(element);
115 // Node properties and attributes
118 * Sets styles for an element.
119 * Fixes opacity in IE6-8.
121 qq.css = function(element, styles){
122 if (styles.opacity != null){
123 if (typeof element.style.opacity != 'string' && typeof(element.filters) != 'undefined'){
124 styles.filter = 'alpha(opacity=' + Math.round(100 * styles.opacity) + ')';
127 qq.extend(element.style, styles);
129 qq.hasClass = function(element, name){
130 var re = new RegExp('(^| )' + name + '( |$)');
131 return re.test(element.className);
133 qq.addClass = function(element, name){
134 if (!qq.hasClass(element, name)){
135 element.className += ' ' + name;
138 qq.removeClass = function(element, name){
139 var re = new RegExp('(^| )' + name + '( |$)');
140 element.className = element.className.replace(re, ' ').replace(/^\s+|\s+$/g, "");
142 qq.setText = function(element, text){
143 element.innerText = text;
144 element.textContent = text;
148 // Selecting elements
150 qq.children = function(element){
152 child = element.firstChild;
155 if (child.nodeType == 1){
156 children.push(child);
158 child = child.nextSibling;
164 qq.getByClass = function(element, className){
165 if (element.querySelectorAll){
166 return element.querySelectorAll('.' + className);
170 var candidates = element.getElementsByTagName("*");
171 var len = candidates.length;
173 for (var i = 0; i < len; i++){
174 if (qq.hasClass(candidates[i], className)){
175 result.push(candidates[i]);
182 * obj2url() takes a json-object as argument and generates
183 * a querystring. pretty much like jQuery.param()
187 * `qq.obj2url({a:'b',c:'d'},'http://any.url/upload?otherParam=value');`
191 * `http://any.url/upload?otherParam=value&a=b&c=d`
193 * @param Object JSON-Object
194 * @param String current querystring-part
195 * @return String encoded querystring
197 qq.obj2url = function(obj, temp, prefixDone){
200 add = function(nextObj, i){
202 ? (/\[\]$/.test(temp)) // prevent double-encoding
206 if ((nextTemp != 'undefined') && (i != 'undefined')) {
208 (typeof nextObj === 'object')
209 ? qq.obj2url(nextObj, nextTemp, true)
210 : (Object.prototype.toString.call(nextObj) === '[object Function]')
211 ? encodeURIComponent(nextTemp) + '=' + encodeURIComponent(nextObj())
212 : encodeURIComponent(nextTemp) + '=' + encodeURIComponent(nextObj)
217 if (!prefixDone && temp) {
218 prefix = (/\?/.test(temp)) ? (/\?$/.test(temp)) ? '' : '&' : '?';
219 uristrings.push(temp);
220 uristrings.push(qq.obj2url(obj));
221 } else if ((Object.prototype.toString.call(obj) === '[object Array]') && (typeof obj != 'undefined') ) {
222 // we wont use a for-in-loop on an array (performance)
223 for (var i = 0, len = obj.length; i < len; ++i){
226 } else if ((typeof obj != 'undefined') && (obj !== null) && (typeof obj === "object")){
227 // for anything else but a scalar, we will use for-in-loop
232 uristrings.push(encodeURIComponent(temp) + '=' + encodeURIComponent(obj));
235 return uristrings.join(prefix)
237 .replace(/%20/g, '+');
249 * Creates upload button, validates upload, but doesn't create file list or dd.
251 qq.FileUploaderBasic = function(o){
253 // set to true to see the server response
255 action: '/server/upload',
261 allowedExtensions: [],
265 // return false to cancel submit
266 onSubmit: function(id, fileName){},
267 onProgress: function(id, fileName, loaded, total){},
268 onComplete: function(id, fileName, responseJSON){},
269 onCancel: function(id, fileName){},
272 typeError: "{file} has invalid extension. Only {extensions} are allowed.",
273 sizeError: "{file} is too large, maximum file size is {sizeLimit}.",
274 minSizeError: "{file} is too small, minimum file size is {minSizeLimit}.",
275 emptyError: "{file} is empty, please select files again without it.",
276 onLeave: "The files are being uploaded, if you leave now the upload will be cancelled."
278 showMessage: function(message){
282 qq.extend(this._options, o);
284 // number of files being uploaded
285 this._filesInProgress = 0;
286 this._handler = this._createUploadHandler();
288 if (this._options.button){
289 this._button = this._createUploadButton(this._options.button);
292 this._preventLeaveInProgress();
295 qq.FileUploaderBasic.prototype = {
296 setParams: function(params){
297 this._options.params = params;
299 getInProgress: function(){
300 return this._filesInProgress;
302 _createUploadButton: function(element){
305 return new qq.UploadButton({
307 multiple: this._options.multiple && qq.UploadHandlerXhr.isSupported(),
308 onChange: function(input){
309 self._onInputChange(input);
313 _createUploadHandler: function(){
317 if(qq.UploadHandlerXhr.isSupported()){
318 handlerClass = 'UploadHandlerXhr';
320 handlerClass = 'UploadHandlerForm';
323 var handler = new qq[handlerClass]({
324 debug: this._options.debug,
325 action: this._options.action,
326 maxConnections: this._options.maxConnections,
327 onProgress: function(id, fileName, loaded, total){
328 self._onProgress(id, fileName, loaded, total);
329 self._options.onProgress(id, fileName, loaded, total);
331 onComplete: function(id, fileName, result){
332 self._onComplete(id, fileName, result);
333 self._options.onComplete(id, fileName, result);
335 onCancel: function(id, fileName){
336 self._onCancel(id, fileName);
337 self._options.onCancel(id, fileName);
343 _preventLeaveInProgress: function(){
346 qq.attach(window, 'beforeunload', function(e){
347 if (!self._filesInProgress){return;}
349 var e = e || window.event;
351 e.returnValue = self._options.messages.onLeave;
353 return self._options.messages.onLeave;
356 _onSubmit: function(id, fileName){
357 this._filesInProgress++;
359 _onProgress: function(id, fileName, loaded, total){
361 _onComplete: function(id, fileName, result){
362 this._filesInProgress--;
364 this._options.showMessage(result.error);
367 _onCancel: function(id, fileName){
368 this._filesInProgress--;
370 _onInputChange: function(input){
371 if (this._handler instanceof qq.UploadHandlerXhr){
372 this._uploadFileList(input.files);
374 if (this._validateFile(input)){
375 this._uploadFile(input);
378 this._button.reset();
380 _uploadFileList: function(files){
381 for (var i=0; i<files.length; i++){
382 if ( !this._validateFile(files[i])){
387 for (var i=0; i<files.length; i++){
388 this._uploadFile(files[i]);
391 _uploadFile: function(fileContainer){
392 var id = this._handler.add(fileContainer);
393 var fileName = this._handler.getName(id);
395 if (this._options.onSubmit(id, fileName) !== false){
396 this._onSubmit(id, fileName);
397 this._handler.upload(id, this._options.params);
400 _validateFile: function(file){
404 // it is a file input
405 // get input value and remove path to normalize
406 name = file.value.replace(/.*(\/|\\)/, "");
408 // fix missing properties in Safari
409 name = file.fileName != null ? file.fileName : file.name;
410 size = file.fileSize != null ? file.fileSize : file.size;
413 if (! this._isAllowedExtension(name)){
414 this._error('typeError', name);
417 } else if (size === 0){
418 this._error('emptyError', name);
421 } else if (size && this._options.sizeLimit && size > this._options.sizeLimit){
422 this._error('sizeError', name);
425 } else if (size && size < this._options.minSizeLimit){
426 this._error('minSizeError', name);
432 _error: function(code, fileName){
433 var message = this._options.messages[code];
434 function r(name, replacement){ message = message.replace(name, replacement); }
436 r('{file}', this._formatFileName(fileName));
437 r('{extensions}', this._options.allowedExtensions.join(', '));
438 r('{sizeLimit}', this._formatSize(this._options.sizeLimit));
439 r('{minSizeLimit}', this._formatSize(this._options.minSizeLimit));
441 this._options.showMessage(message);
443 _formatFileName: function(name){
444 if (name.length > 33){
445 name = name.slice(0, 19) + '...' + name.slice(-13);
449 _isAllowedExtension: function(fileName){
450 var ext = (-1 !== fileName.indexOf('.')) ? fileName.replace(/.*[.]/, '').toLowerCase() : '';
451 var allowed = this._options.allowedExtensions;
453 if (!allowed.length){return true;}
455 for (var i=0; i<allowed.length; i++){
456 if (allowed[i].toLowerCase() == ext){ return true;}
461 _formatSize: function(bytes){
464 bytes = bytes / 1024;
466 } while (bytes > 99);
468 return Math.max(bytes, 0.1).toFixed(1) + ['kB', 'MB', 'GB', 'TB', 'PB', 'EB'][i];
474 * Class that creates upload widget with drag-and-drop and file list
475 * @inherits qq.FileUploaderBasic
477 qq.FileUploader = function(o){
478 // call parent constructor
479 qq.FileUploaderBasic.apply(this, arguments);
481 // additional options
482 qq.extend(this._options, {
484 // if set, will be used instead of qq-upload-list in template
487 template: '<div class="qq-uploader">' +
488 '<div class="qq-upload-drop-area"><span>Drop files here to upload</span></div>' +
489 '<div class="qq-upload-button">Upload a file</div>' +
490 '<ul class="qq-upload-list"></ul>' +
493 // template for one item in file list
494 fileTemplate: '<li>' +
495 '<span class="qq-upload-file"></span>' +
496 '<span class="qq-upload-spinner"></span>' +
497 '<span class="qq-upload-size"></span>' +
498 '<a class="qq-upload-cancel" href="#">Cancel</a>' +
499 '<span class="qq-upload-failed-text">Failed</span>' +
503 // used to get elements from templates
504 button: 'qq-upload-button',
505 drop: 'qq-upload-drop-area',
506 dropActive: 'qq-upload-drop-area-active',
507 list: 'qq-upload-list',
509 file: 'qq-upload-file',
510 spinner: 'qq-upload-spinner',
511 size: 'qq-upload-size',
512 cancel: 'qq-upload-cancel',
514 // added to list item when upload completes
515 // used in css to hide progress spinner
516 success: 'qq-upload-success',
517 fail: 'qq-upload-fail'
520 // overwrite options with user supplied
521 qq.extend(this._options, o);
523 this._element = this._options.element;
524 this._element.innerHTML = this._options.template;
525 this._listElement = this._options.listElement || this._find(this._element, 'list');
527 this._classes = this._options.classes;
529 this._button = this._createUploadButton(this._find(this._element, 'button'));
531 this._bindCancelEvent();
532 this._setupDragDrop();
535 // inherit from Basic Uploader
536 qq.extend(qq.FileUploader.prototype, qq.FileUploaderBasic.prototype);
538 qq.extend(qq.FileUploader.prototype, {
540 * Gets one of the elements listed in this._options.classes
542 _find: function(parent, type){
543 var element = qq.getByClass(parent, this._options.classes[type])[0];
545 throw new Error('element not found ' + type);
550 _setupDragDrop: function(){
552 dropArea = this._find(this._element, 'drop');
554 var dz = new qq.UploadDropZone({
556 onEnter: function(e){
557 qq.addClass(dropArea, self._classes.dropActive);
560 onLeave: function(e){
563 onLeaveNotDescendants: function(e){
564 qq.removeClass(dropArea, self._classes.dropActive);
567 dropArea.style.display = 'none';
568 qq.removeClass(dropArea, self._classes.dropActive);
569 self._uploadFileList(e.dataTransfer.files);
573 dropArea.style.display = 'none';
575 qq.attach(document, 'dragenter', function(e){
576 if (!dz._isValidFileDrag(e)) return;
578 dropArea.style.display = 'block';
580 qq.attach(document, 'dragleave', function(e){
581 if (!dz._isValidFileDrag(e)) return;
583 var relatedTarget = document.elementFromPoint(e.clientX, e.clientY);
584 // only fire when leaving document out
585 if ( ! relatedTarget || relatedTarget.nodeName == "HTML"){
586 dropArea.style.display = 'none';
590 _onSubmit: function(id, fileName){
591 qq.FileUploaderBasic.prototype._onSubmit.apply(this, arguments);
592 this._addToList(id, fileName);
594 _onProgress: function(id, fileName, loaded, total){
595 qq.FileUploaderBasic.prototype._onProgress.apply(this, arguments);
597 var item = this._getItemByFileId(id);
598 var size = this._find(item, 'size');
599 size.style.display = 'inline';
602 if (loaded != total){
603 text = Math.round(loaded / total * 100) + '% from ' + this._formatSize(total);
605 text = this._formatSize(total);
608 qq.setText(size, text);
610 _onComplete: function(id, fileName, result){
611 qq.FileUploaderBasic.prototype._onComplete.apply(this, arguments);
614 var item = this._getItemByFileId(id);
615 qq.remove(this._find(item, 'cancel'));
616 qq.remove(this._find(item, 'spinner'));
619 qq.addClass(item, this._classes.success);
621 qq.addClass(item, this._classes.fail);
624 _addToList: function(id, fileName){
625 var item = qq.toElement(this._options.fileTemplate);
628 var fileElement = this._find(item, 'file');
629 qq.setText(fileElement, this._formatFileName(fileName));
630 this._find(item, 'size').style.display = 'none';
632 this._listElement.appendChild(item);
634 _getItemByFileId: function(id){
635 var item = this._listElement.firstChild;
637 // there can't be txt nodes in dynamically created list
638 // and we can use nextSibling
640 if (item.qqFileId == id) return item;
641 item = item.nextSibling;
645 * delegate click event for cancel link
647 _bindCancelEvent: function(){
649 list = this._listElement;
651 qq.attach(list, 'click', function(e){
652 e = e || window.event;
653 var target = e.target || e.srcElement;
655 if (qq.hasClass(target, self._classes.cancel)){
656 qq.preventDefault(e);
658 var item = target.parentNode;
659 self._handler.cancel(item.qqFileId);
666 qq.UploadDropZone = function(o){
669 onEnter: function(e){},
670 onLeave: function(e){},
671 // is not fired when leaving element by hovering descendants
672 onLeaveNotDescendants: function(e){},
673 onDrop: function(e){}
675 qq.extend(this._options, o);
677 this._element = this._options.element;
679 this._disableDropOutside();
680 this._attachEvents();
683 qq.UploadDropZone.prototype = {
684 _disableDropOutside: function(e){
685 // run only once for all instances
686 if (!qq.UploadDropZone.dropOutsideDisabled ){
688 qq.attach(document, 'dragover', function(e){
690 e.dataTransfer.dropEffect = 'none';
695 qq.UploadDropZone.dropOutsideDisabled = true;
698 _attachEvents: function(){
701 qq.attach(self._element, 'dragover', function(e){
702 if (!self._isValidFileDrag(e)) return;
704 var effect = e.dataTransfer.effectAllowed;
705 if (effect == 'move' || effect == 'linkMove'){
706 e.dataTransfer.dropEffect = 'move'; // for FF (only move allowed)
708 e.dataTransfer.dropEffect = 'copy'; // for Chrome
715 qq.attach(self._element, 'dragenter', function(e){
716 if (!self._isValidFileDrag(e)) return;
718 self._options.onEnter(e);
721 qq.attach(self._element, 'dragleave', function(e){
722 if (!self._isValidFileDrag(e)) return;
724 self._options.onLeave(e);
726 var relatedTarget = document.elementFromPoint(e.clientX, e.clientY);
727 // do not fire when moving a mouse over a descendant
728 if (qq.contains(this, relatedTarget)) return;
730 self._options.onLeaveNotDescendants(e);
733 qq.attach(self._element, 'drop', function(e){
734 if (!self._isValidFileDrag(e)) return;
737 self._options.onDrop(e);
740 _isValidFileDrag: function(e){
741 var dt = e.dataTransfer,
742 // do not check dt.types.contains in webkit, because it crashes safari 4
743 isWebkit = navigator.userAgent.indexOf("AppleWebKit") > -1;
745 // dt.effectAllowed is none in Safari 5
746 // dt.types.contains check is for firefox
747 return dt && dt.effectAllowed != 'none' &&
748 (dt.files || (!isWebkit && dt.types.contains && dt.types.contains('Files')));
753 qq.UploadButton = function(o){
756 // if set to true adds multiple attribute to file input
758 // name attribute of file input
760 onChange: function(input){},
761 hoverClass: 'qq-upload-button-hover',
762 focusClass: 'qq-upload-button-focus'
765 qq.extend(this._options, o);
767 this._element = this._options.element;
769 // make button suitable container for input
770 qq.css(this._element, {
771 position: 'relative',
773 // Make sure browse button is in the right side
774 // in Internet Explorer
778 this._input = this._createInput();
781 qq.UploadButton.prototype = {
782 /* returns file input element */
783 getInput: function(){
786 /* cleans/recreates the file input */
788 if (this._input.parentNode){
789 qq.remove(this._input);
792 qq.removeClass(this._element, this._options.focusClass);
793 this._input = this._createInput();
795 _createInput: function(){
796 var input = document.createElement("input");
798 if (this._options.multiple){
799 input.setAttribute("multiple", "multiple");
802 input.setAttribute("type", "file");
803 input.setAttribute("name", this._options.name);
806 position: 'absolute',
807 // in Opera only 'browse' button
808 // is clickable and it is located at
809 // the right side of the input
813 // 4 persons reported this, the max values that worked for them were 243, 236, 236, 118
821 this._element.appendChild(input);
824 qq.attach(input, 'change', function(){
825 self._options.onChange(input);
828 qq.attach(input, 'mouseover', function(){
829 qq.addClass(self._element, self._options.hoverClass);
831 qq.attach(input, 'mouseout', function(){
832 qq.removeClass(self._element, self._options.hoverClass);
834 qq.attach(input, 'focus', function(){
835 qq.addClass(self._element, self._options.focusClass);
837 qq.attach(input, 'blur', function(){
838 qq.removeClass(self._element, self._options.focusClass);
841 // IE and Opera, unfortunately have 2 tab stops on file input
842 // which is unacceptable in our case, disable keyboard access
843 if (window.attachEvent){
845 input.setAttribute('tabIndex', "-1");
853 * Class for uploading files, uploading itself is handled by child classes
855 qq.UploadHandlerAbstract = function(o){
858 action: '/upload.php',
859 // maximum number of concurrent uploads
861 onProgress: function(id, fileName, loaded, total){},
862 onComplete: function(id, fileName, response){},
863 onCancel: function(id, fileName){}
865 qq.extend(this._options, o);
868 // params for files in queue
871 qq.UploadHandlerAbstract.prototype = {
873 if (this._options.debug && window.console) console.log('[uploader] ' + str);
876 * Adds file or file input to the queue
879 add: function(file){},
881 * Sends the file identified by id and additional query params to the server
883 upload: function(id, params){
884 var len = this._queue.push(id);
887 qq.extend(copy, params);
888 this._params[id] = copy;
890 // if too many active uploads, wait...
891 if (len <= this._options.maxConnections){
892 this._upload(id, this._params[id]);
896 * Cancels file upload by id
898 cancel: function(id){
903 * Cancells all uploads
905 cancelAll: function(){
906 for (var i=0; i<this._queue.length; i++){
907 this._cancel(this._queue[i]);
912 * Returns name of the file identified by id
914 getName: function(id){},
916 * Returns size of the file identified by id
918 getSize: function(id){},
920 * Returns id of files being uploaded or
921 * waiting for their turn
923 getQueue: function(){
927 * Actual upload method
929 _upload: function(id){},
931 * Actual cancel method
933 _cancel: function(id){},
935 * Removes element from queue, starts upload of next
937 _dequeue: function(id){
938 var i = qq.indexOf(this._queue, id);
939 this._queue.splice(i, 1);
941 var max = this._options.maxConnections;
943 if (this._queue.length >= max){
944 var nextId = this._queue[max-1];
945 this._upload(nextId, this._params[nextId]);
951 * Class for uploading files using form and iframe
952 * @inherits qq.UploadHandlerAbstract
954 qq.UploadHandlerForm = function(o){
955 qq.UploadHandlerAbstract.apply(this, arguments);
959 // @inherits qq.UploadHandlerAbstract
960 qq.extend(qq.UploadHandlerForm.prototype, qq.UploadHandlerAbstract.prototype);
962 qq.extend(qq.UploadHandlerForm.prototype, {
963 add: function(fileInput){
964 fileInput.setAttribute('name', 'qqfile');
965 var id = 'qq-upload-handler-iframe' + qq.getUniqueId();
967 this._inputs[id] = fileInput;
969 // remove file input from DOM
970 if (fileInput.parentNode){
971 qq.remove(fileInput);
976 getName: function(id){
977 // get input value and remove path to normalize
978 return this._inputs[id].value.replace(/.*(\/|\\)/, "");
980 _cancel: function(id){
981 this._options.onCancel(id, this.getName(id));
983 delete this._inputs[id];
985 var iframe = document.getElementById(id);
987 // to cancel request set src to something else
988 // we use src="javascript:false;" because it doesn't
989 // trigger ie6 prompt on https
990 iframe.setAttribute('src', 'javascript:false;');
995 _upload: function(id, params){
996 var input = this._inputs[id];
999 throw new Error('file with passed id was not added, or already uploaded or cancelled');
1002 var fileName = this.getName(id);
1004 var iframe = this._createIframe(id);
1005 var form = this._createForm(iframe, params);
1006 form.appendChild(input);
1009 this._attachLoadEvent(iframe, function(){
1010 self.log('iframe loaded');
1012 var response = self._getIframeContentJSON(iframe);
1014 self._options.onComplete(id, fileName, response);
1017 delete self._inputs[id];
1018 // timeout added to fix busy state in FF3.6
1019 setTimeout(function(){
1029 _attachLoadEvent: function(iframe, callback){
1030 qq.attach(iframe, 'load', function(){
1031 // when we remove iframe from dom
1032 // the request stops, but in IE load
1034 if (!iframe.parentNode){
1038 // fixing Opera 10.53
1039 if (iframe.contentDocument &&
1040 iframe.contentDocument.body &&
1041 iframe.contentDocument.body.innerHTML == "false"){
1042 // In Opera event is fired second time
1043 // when body.innerHTML changed from false
1044 // to server response approx. after 1 sec
1045 // when we upload file with iframe
1053 * Returns json object received by iframe from server.
1055 _getIframeContentJSON: function(iframe){
1056 // iframe.contentWindow.document - for IE<7
1057 var doc = iframe.contentDocument ? iframe.contentDocument: iframe.contentWindow.document,
1060 this.log("converting iframe's innerHTML to JSON");
1061 this.log("innerHTML = " + doc.body.innerHTML);
1064 response = eval("(" + doc.body.innerHTML + ")");
1072 * Creates iframe with unique name
1074 _createIframe: function(id){
1075 // We can't use following code as the name attribute
1076 // won't be properly registered in IE6, and new window
1077 // on form submit will open
1078 // var iframe = document.createElement('iframe');
1079 // iframe.setAttribute('name', id);
1081 var iframe = qq.toElement('<iframe src="javascript:false;" name="' + id + '" />');
1082 // src="javascript:false;" removes ie6 prompt on https
1084 iframe.setAttribute('id', id);
1086 iframe.style.display = 'none';
1087 document.body.appendChild(iframe);
1092 * Creates form, that will be submitted to iframe
1094 _createForm: function(iframe, params){
1095 // We can't use the following code in IE6
1096 // var form = document.createElement('form');
1097 // form.setAttribute('method', 'post');
1098 // form.setAttribute('enctype', 'multipart/form-data');
1099 // Because in this case file won't be attached to request
1100 var form = qq.toElement('<form method="post" enctype="multipart/form-data"></form>');
1102 var queryString = qq.obj2url(params, this._options.action);
1104 form.setAttribute('action', queryString);
1105 form.setAttribute('target', iframe.name);
1106 form.style.display = 'none';
1107 document.body.appendChild(form);
1114 * Class for uploading files using xhr
1115 * @inherits qq.UploadHandlerAbstract
1117 qq.UploadHandlerXhr = function(o){
1118 qq.UploadHandlerAbstract.apply(this, arguments);
1123 // current loaded size in bytes for each file
1128 qq.UploadHandlerXhr.isSupported = function(){
1129 var input = document.createElement('input');
1130 input.type = 'file';
1133 'multiple' in input &&
1134 typeof File != "undefined" &&
1135 typeof (new XMLHttpRequest()).upload != "undefined" );
1138 // @inherits qq.UploadHandlerAbstract
1139 qq.extend(qq.UploadHandlerXhr.prototype, qq.UploadHandlerAbstract.prototype)
1141 qq.extend(qq.UploadHandlerXhr.prototype, {
1143 * Adds file to the queue
1144 * Returns id to use with upload, cancel
1146 add: function(file){
1147 if (!(file instanceof File)){
1148 throw new Error('Passed obj in not a File (in qq.UploadHandlerXhr)');
1151 return this._files.push(file) - 1;
1153 getName: function(id){
1154 var file = this._files[id];
1155 // fix missing name in Safari 4
1156 return file.fileName != null ? file.fileName : file.name;
1158 getSize: function(id){
1159 var file = this._files[id];
1160 return file.fileSize != null ? file.fileSize : file.size;
1163 * Returns uploaded bytes for file identified by id
1165 getLoaded: function(id){
1166 return this._loaded[id] || 0;
1169 * Sends the file identified by id and additional query params to the server
1170 * @param {Object} params name-value string pairs
1172 _upload: function(id, params){
1173 var file = this._files[id],
1174 name = this.getName(id),
1175 size = this.getSize(id);
1177 this._loaded[id] = 0;
1179 var xhr = this._xhrs[id] = new XMLHttpRequest();
1182 xhr.upload.onprogress = function(e){
1183 if (e.lengthComputable){
1184 self._loaded[id] = e.loaded;
1185 self._options.onProgress(id, name, e.loaded, e.total);
1189 xhr.onreadystatechange = function(){
1190 if (xhr.readyState == 4){
1191 self._onComplete(id, xhr);
1195 // build query string
1196 params = params || {};
1197 params['qqfile'] = name;
1198 var queryString = qq.obj2url(params, this._options.action);
1200 xhr.open("POST", queryString, true);
1201 xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
1202 xhr.setRequestHeader("X-File-Name", encodeURIComponent(name));
1203 xhr.setRequestHeader("Content-Type", "application/octet-stream");
1206 _onComplete: function(id, xhr){
1207 // the request was aborted/cancelled
1208 if (!this._files[id]) return;
1210 var name = this.getName(id);
1211 var size = this.getSize(id);
1213 this._options.onProgress(id, name, size, size);
1215 if (xhr.status == 200){
1216 this.log("xhr - server response received");
1217 this.log("responseText = " + xhr.responseText);
1222 response = eval("(" + xhr.responseText + ")");
1227 this._options.onComplete(id, name, response);
1230 this._options.onComplete(id, name, {});
1233 this._files[id] = null;
1234 this._xhrs[id] = null;
1237 _cancel: function(id){
1238 this._options.onCancel(id, this.getName(id));
1240 this._files[id] = null;
1242 if (this._xhrs[id]){
1243 this._xhrs[id].abort();
1244 this._xhrs[id] = null;