Replace previous fineuploader path with old version

services/web/public/js/libs/fineuploader.js

@@ -0,0 +1,3761 @@
+/**
+ * http://github.com/Valums-File-Uploader/file-uploader
+ *
+ * Multiple file upload component with progress-bar, drag-and-drop, support for all modern browsers.
+ *
+ * Original version: 1.0 © 2010 Andrew Valums ( andrew(at)valums.com )
+ * Current Maintainer (2.0+): © 2012, Ray Nicholus ( fineuploader(at)garstasio.com )
+ *
+ * Licensed under MIT license, GNU GPL 2 or later, GNU LGPL 2 or later, see license.txt.
+ */
+/*globals window, navigator, document, FormData, File, HTMLInputElement, XMLHttpRequest, Blob*/
+var qq = function(element) {
+    "use strict";
+
+    return {
+        hide: function() {
+            element.style.display = 'none';
+            return this;
+        },
+
+        /** Returns the function which detaches attached event */
+        attach: function(type, fn) {
+            if (element.addEventListener){
+                element.addEventListener(type, fn, false);
+            } else if (element.attachEvent){
+                element.attachEvent('on' + type, fn);
+            }
+            return function() {
+                qq(element).detach(type, fn);
+            };
+        },
+
+        detach: function(type, fn) {
+            if (element.removeEventListener){
+                element.removeEventListener(type, fn, false);
+            } else if (element.attachEvent){
+                element.detachEvent('on' + type, fn);
+            }
+            return this;
+        },
+
+        contains: function(descendant) {
+            // compareposition returns false in this case
+            if (element === descendant) {
+                return true;
+            }
+
+            if (element.contains){
+                return element.contains(descendant);
+            } else {
+                /*jslint bitwise: true*/
+                return !!(descendant.compareDocumentPosition(element) & 8);
+            }
+        },
+
+        /**
+         * Insert this element before elementB.
+         */
+        insertBefore: function(elementB) {
+            elementB.parentNode.insertBefore(element, elementB);
+            return this;
+        },
+
+        remove: function() {
+            element.parentNode.removeChild(element);
+            return this;
+        },
+
+        /**
+         * Sets styles for an element.
+         * Fixes opacity in IE6-8.
+         */
+        css: function(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);
+
+            return this;
+        },
+
+        hasClass: function(name) {
+            var re = new RegExp('(^| )' + name + '( |$)');
+            return re.test(element.className);
+        },
+
+        addClass: function(name) {
+            if (!qq(element).hasClass(name)){
+                element.className += ' ' + name;
+            }
+            return this;
+        },
+
+        removeClass: function(name) {
+            var re = new RegExp('(^| )' + name + '( |$)');
+            element.className = element.className.replace(re, ' ').replace(/^\s+|\s+$/g, "");
+            return this;
+        },
+
+        getByClass: function(className) {
+            var candidates,
+                result = [];
+
+            if (element.querySelectorAll){
+                return element.querySelectorAll('.' + className);
+            }
+
+            candidates = element.getElementsByTagName("*");
+
+            qq.each(candidates, function(idx, val) {
+                if (qq(val).hasClass(className)){
+                    result.push(val);
+                }
+            });
+            return result;
+        },
+
+        children: function() {
+            var children = [],
+                child = element.firstChild;
+
+            while (child){
+                if (child.nodeType === 1){
+                    children.push(child);
+                }
+                child = child.nextSibling;
+            }
+
+            return children;
+        },
+
+        setText: function(text) {
+            element.innerText = text;
+            element.textContent = text;
+            return this;
+        },
+
+        clearText: function() {
+            return qq(element).setText("");
+        }
+    };
+};
+
+qq.log = function(message, level) {
+    "use strict";
+
+    if (window.console) {
+        if (!level || level === 'info') {
+            window.console.log(message);
+        }
+        else
+        {
+            if (window.console[level]) {
+                window.console[level](message);
+            }
+            else {
+                window.console.log('<' + level + '> ' + message);
+            }
+        }
+    }
+};
+
+qq.isObject = function(variable) {
+    "use strict";
+    return variable !== null && variable && typeof(variable) === "object" && variable.constructor === Object;
+};
+
+qq.isFunction = function(variable) {
+    "use strict";
+    return typeof(variable) === "function";
+};
+
+qq.trimStr = function(string) {
+    if (String.prototype.trim) {
+        return string.trim();
+    }
+
+    return string.replace(/^\s+|\s+$/g,'');
+};
+
+qq.isFileOrInput = function(maybeFileOrInput) {
+    "use strict";
+    if (qq.isBlob(maybeFileOrInput) && window.File && maybeFileOrInput instanceof File) {
+        return true;
+    }
+    else if (window.HTMLInputElement) {
+        if (maybeFileOrInput instanceof HTMLInputElement) {
+            if (maybeFileOrInput.type && maybeFileOrInput.type.toLowerCase() === 'file') {
+                return true;
+            }
+        }
+    }
+    else if (maybeFileOrInput.tagName) {
+        if (maybeFileOrInput.tagName.toLowerCase() === 'input') {
+            if (maybeFileOrInput.type && maybeFileOrInput.type.toLowerCase() === 'file') {
+                return true;
+            }
+        }
+    }
+
+    return false;
+};
+
+qq.isBlob = function(maybeBlob) {
+    "use strict";
+    return window.Blob && maybeBlob instanceof Blob;
+};
+
+qq.isXhrUploadSupported = function() {
+    "use strict";
+    var input = document.createElement('input');
+    input.type = 'file';
+
+    return (
+        input.multiple !== undefined &&
+            typeof File !== "undefined" &&
+            typeof FormData !== "undefined" &&
+            typeof (new XMLHttpRequest()).upload !== "undefined" );
+};
+
+qq.isFolderDropSupported = function(dataTransfer) {
+    "use strict";
+    return (dataTransfer.items && dataTransfer.items[0].webkitGetAsEntry);
+};
+
+qq.isFileChunkingSupported = function() {
+    "use strict";
+    return !qq.android() && //android's impl of Blob.slice is broken
+        qq.isXhrUploadSupported() &&
+        (File.prototype.slice || File.prototype.webkitSlice || File.prototype.mozSlice);
+};
+
+qq.extend = function (first, second, extendNested) {
+    "use strict";
+    qq.each(second, function(prop, val) {
+        if (extendNested && qq.isObject(val)) {
+            if (first[prop] === undefined) {
+                first[prop] = {};
+            }
+            qq.extend(first[prop], val, true);
+        }
+        else {
+            first[prop] = val;
+        }
+    });
+};
+
+/**
+ * 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){
+    "use strict";
+
+    if (arr.indexOf) {
+        return arr.indexOf(elt, from);
+    }
+
+    from = from || 0;
+    var len = arr.length;
+
+    if (from < 0) {
+        from += len;
+    }
+
+    for (; from < len; from+=1){
+        if (arr.hasOwnProperty(from) && arr[from] === elt){
+            return from;
+        }
+    }
+    return -1;
+};
+
+//this is a version 4 UUID
+qq.getUniqueId = function(){
+    "use strict";
+
+    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
+        /*jslint eqeq: true, bitwise: true*/
+        var r = Math.random()*16|0, v = c == 'x' ? r : (r&0x3|0x8);
+        return v.toString(16);
+    });
+};
+
+//
+// Browsers and platforms detection
+
+qq.ie       = function(){
+    "use strict";
+    return navigator.userAgent.indexOf('MSIE') !== -1;
+};
+qq.ie10     = function(){
+    "use strict";
+    return navigator.userAgent.indexOf('MSIE 10') !== -1;
+};
+qq.safari   = function(){
+    "use strict";
+    return navigator.vendor !== undefined && navigator.vendor.indexOf("Apple") !== -1;
+};
+qq.chrome   = function(){
+    "use strict";
+    return navigator.vendor !== undefined && navigator.vendor.indexOf('Google') !== -1;
+};
+qq.firefox  = function(){
+    "use strict";
+    return (navigator.userAgent.indexOf('Mozilla') !== -1 && navigator.vendor !== undefined && navigator.vendor === '');
+};
+qq.windows  = function(){
+    "use strict";
+    return navigator.platform === "Win32";
+};
+qq.android = function(){
+    "use strict";
+    return navigator.userAgent.toLowerCase().indexOf('android') !== -1;
+};
+
+//
+// Events
+
+qq.preventDefault = function(e){
+    "use strict";
+    if (e.preventDefault){
+        e.preventDefault();
+    } else{
+        e.returnValue = false;
+    }
+};
+
+/**
+ * Creates and returns element from html string
+ * Uses innerHTML to create an element
+ */
+qq.toElement = (function(){
+    "use strict";
+    var div = document.createElement('div');
+    return function(html){
+        div.innerHTML = html;
+        var element = div.firstChild;
+        div.removeChild(element);
+        return element;
+    };
+}());
+
+//key and value are passed to callback for each item in the object or array
+qq.each = function(obj, callback) {
+    "use strict";
+    var key, retVal;
+    if (obj) {
+        for (key in obj) {
+            if (Object.prototype.hasOwnProperty.call(obj, key)) {
+                retVal = callback(key, obj[key]);
+                if (retVal === false) {
+                    break;
+                }
+            }
+        }
+    }
+};
+
+/**
+ * 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){
+    "use strict";
+    /*jshint laxbreak: true*/
+     var i, len,
+         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 (i = -1, len = obj.length; i < len; i+=1){
+            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 (i in obj){
+            if (obj.hasOwnProperty(i)) {
+                add(obj[i], i);
+            }
+        }
+    } else {
+        uristrings.push(encodeURIComponent(temp) + '=' + encodeURIComponent(obj));
+    }
+
+    if (temp) {
+        return uristrings.join(prefix);
+    } else {
+        return uristrings.join(prefix)
+            .replace(/^&/, '')
+            .replace(/%20/g, '+');
+    }
+};
+
+qq.obj2FormData = function(obj, formData, arrayKeyName) {
+    "use strict";
+    if (!formData) {
+        formData = new FormData();
+    }
+
+    qq.each(obj, function(key, val) {
+        key = arrayKeyName ? arrayKeyName + '[' + key + ']' : key;
+
+        if (qq.isObject(val)) {
+            qq.obj2FormData(val, formData, key);
+        }
+        else if (qq.isFunction(val)) {
+            formData.append(key, val());
+        }
+        else {
+            formData.append(key, val);
+        }
+    });
+
+    return formData;
+};
+
+qq.obj2Inputs = function(obj, form) {
+    "use strict";
+    var input;
+
+    if (!form) {
+        form = document.createElement('form');
+    }
+
+    qq.obj2FormData(obj, {
+        append: function(key, val) {
+            input = document.createElement('input');
+            input.setAttribute('name', key);
+            input.setAttribute('value', val);
+            form.appendChild(input);
+        }
+    });
+
+    return form;
+};
+
+qq.setCookie = function(name, value, days) {
+    var date = new Date(),
+        expires = "";
+
+	if (days) {
+		date.setTime(date.getTime()+(days*24*60*60*1000));
+		expires = "; expires="+date.toGMTString();
+	}
+
+	document.cookie = name+"="+value+expires+"; path=/";
+};
+
+qq.getCookie = function(name) {
+	var nameEQ = name + "=",
+        ca = document.cookie.split(';'),
+        c;
+
+	for(var i=0;i < ca.length;i++) {
+		c = ca[i];
+		while (c.charAt(0)==' ') {
+            c = c.substring(1,c.length);
+        }
+		if (c.indexOf(nameEQ) === 0) {
+            return c.substring(nameEQ.length,c.length);
+        }
+	}
+};
+
+qq.getCookieNames = function(regexp) {
+    var cookies = document.cookie.split(';'),
+        cookieNames = [];
+
+    qq.each(cookies, function(idx, cookie) {
+        cookie = qq.trimStr(cookie);
+
+        var equalsIdx = cookie.indexOf("=");
+
+        if (cookie.match(regexp)) {
+            cookieNames.push(cookie.substr(0, equalsIdx));
+        }
+    });
+
+    return cookieNames;
+};
+
+qq.deleteCookie = function(name) {
+	qq.setCookie(name, "", -1);
+};
+
+qq.areCookiesEnabled = function() {
+    var randNum = Math.random() * 100000,
+        name = "qqCookieTest:" + randNum;
+    qq.setCookie(name, 1);
+
+    if (qq.getCookie(name)) {
+        qq.deleteCookie(name);
+        return true;
+    }
+    return false;
+};
+
+/**
+ * Not recommended for use outside of Fine Uploader since this falls back to an unchecked eval if JSON.parse is not
+ * implemented.  For a more secure JSON.parse polyfill, use Douglas Crockford's json2.js.
+ */
+qq.parseJson = function(json) {
+    /*jshint evil: true*/
+    if (window.JSON && qq.isFunction(JSON.parse)) {
+        return JSON.parse(json);
+    } else {
+        return eval("(" + json + ")");
+    }
+};
+
+/**
+ * A generic module which supports object disposing in dispose() method.
+ * */
+qq.DisposeSupport = function() {
+    "use strict";
+    var disposers = [];
+
+    return {
+        /** Run all registered disposers */
+        dispose: function() {
+            var disposer;
+            do {
+                disposer = disposers.shift();
+                if (disposer) {
+                    disposer();
+                }
+            }
+            while (disposer);
+        },
+
+        /** Attach event handler and register de-attacher as a disposer */
+        attach: function() {
+            var args = arguments;
+            /*jslint undef:true*/
+            this.addDisposer(qq(args[0]).attach.apply(this, Array.prototype.slice.call(arguments, 1)));
+        },
+
+        /** Add disposer to the collection */
+        addDisposer: function(disposeFunction) {
+            disposers.push(disposeFunction);
+        }
+    };
+};
+qq.UploadButton = function(o){
+    this._options = {
+        element: null,
+        // if set to true adds multiple attribute to file input
+        multiple: false,
+        acceptFiles: null,
+        // 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._disposeSupport = new qq.DisposeSupport();
+
+    this._element = this._options.element;
+
+    // make button suitable container for input
+    qq(this._element).css({
+        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(this._input).remove();
+        }
+
+        qq(this._element).removeClass(this._options.focusClass);
+        this._input = this._createInput();
+    },
+    _createInput: function(){
+        var input = document.createElement("input");
+
+        if (this._options.multiple){
+            input.setAttribute("multiple", "multiple");
+        }
+
+        if (this._options.acceptFiles) input.setAttribute("accept", this._options.acceptFiles);
+
+        input.setAttribute("type", "file");
+        input.setAttribute("name", this._options.name);
+
+        qq(input).css({
+            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;
+        this._disposeSupport.attach(input, 'change', function(){
+            self._options.onChange(input);
+        });
+
+        this._disposeSupport.attach(input, 'mouseover', function(){
+            qq(self._element).addClass(self._options.hoverClass);
+        });
+        this._disposeSupport.attach(input, 'mouseout', function(){
+            qq(self._element).removeClass(self._options.hoverClass);
+        });
+        this._disposeSupport.attach(input, 'focus', function(){
+            qq(self._element).addClass(self._options.focusClass);
+        });
+        this._disposeSupport.attach(input, 'blur', function(){
+            qq(self._element).removeClass(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;
+    }
+};
+qq.FineUploaderBasic = function(o){
+    var that = this;
+    this._options = {
+        debug: false,
+        button: null,
+        multiple: true,
+        maxConnections: 3,
+        disableCancelForFormUploads: false,
+        autoUpload: true,
+        request: {
+            endpoint: '/server/upload',
+            params: {},
+            paramsInBody: true,
+            customHeaders: {},
+            forceMultipart: true,
+            inputName: 'qqfile',
+            uuidName: 'qquuid',
+            totalFileSizeName: 'qqtotalfilesize'
+        },
+        validation: {
+            allowedExtensions: [],
+            sizeLimit: 0,
+            minSizeLimit: 0,
+            stopOnFirstInvalidFile: true
+        },
+        callbacks: {
+            onSubmit: function(id, name){},
+            onComplete: function(id, name, responseJSON){},
+            onCancel: function(id, name){},
+            onUpload: function(id, name){},
+            onUploadChunk: function(id, name, chunkData){},
+            onResume: function(id, fileName, chunkData){},
+            onProgress: function(id, name, loaded, total){},
+            onError: function(id, name, reason) {},
+            onAutoRetry: function(id, name, attemptNumber) {},
+            onManualRetry: function(id, name) {},
+            onValidateBatch: function(fileOrBlobData) {},
+            onValidate: function(fileOrBlobData) {},
+            onSubmitDelete: function(id) {},
+            onDelete: function(id){},
+            onDeleteComplete: function(id, xhr, isError){}
+        },
+        messages: {
+            typeError: "{file} has an invalid extension. Valid extension(s): {extensions}.",
+            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.",
+            noFilesError: "No files to upload.",
+            onLeave: "The files are being uploaded, if you leave now the upload will be cancelled."
+        },
+        retry: {
+            enableAuto: false,
+            maxAutoAttempts: 3,
+            autoAttemptDelay: 5,
+            preventRetryResponseProperty: 'preventRetry'
+        },
+        classes: {
+            buttonHover: 'qq-upload-button-hover',
+            buttonFocus: 'qq-upload-button-focus'
+        },
+        chunking: {
+            enabled: false,
+            partSize: 2000000,
+            paramNames: {
+                partIndex: 'qqpartindex',
+                partByteOffset: 'qqpartbyteoffset',
+                chunkSize: 'qqchunksize',
+                totalFileSize: 'qqtotalfilesize',
+                totalParts: 'qqtotalparts',
+                filename: 'qqfilename'
+            }
+        },
+        resume: {
+            enabled: false,
+            id: null,
+            cookiesExpireIn: 7, //days
+            paramNames: {
+                resuming: "qqresume"
+            }
+        },
+        formatFileName: function(fileOrBlobName) {
+            if (fileOrBlobName.length > 33) {
+                fileOrBlobName = fileOrBlobName.slice(0, 19) + '...' + fileOrBlobName.slice(-14);
+            }
+            return fileOrBlobName;
+        },
+        text: {
+            sizeSymbols: ['kB', 'MB', 'GB', 'TB', 'PB', 'EB']
+        },
+        deleteFile : {
+            enabled: false,
+            endpoint: '/server/upload',
+            customHeaders: {},
+            params: {}
+        },
+        cors: {
+            expected: false,
+            sendCredentials: false
+        },
+        blobs: {
+            defaultName: 'Misc data',
+            paramNames: {
+                name: 'qqblobname'
+            }
+        }
+    };
+
+    qq.extend(this._options, o, true);
+    this._wrapCallbacks();
+    this._disposeSupport =  new qq.DisposeSupport();
+
+    // number of files being uploaded
+    this._filesInProgress = [];
+
+    this._storedIds = [];
+
+    this._autoRetries = [];
+    this._retryTimeouts = [];
+    this._preventRetries = [];
+
+    this._paramsStore = this._createParamsStore("request");
+    this._deleteFileParamsStore = this._createParamsStore("deleteFile");
+
+    this._endpointStore = this._createEndpointStore("request");
+    this._deleteFileEndpointStore = this._createEndpointStore("deleteFile");
+
+    this._handler = this._createUploadHandler();
+    this._deleteHandler = this._createDeleteHandler();
+
+    if (this._options.button){
+        this._button = this._createUploadButton(this._options.button);
+    }
+
+    this._preventLeaveInProgress();
+};
+
+qq.FineUploaderBasic.prototype = {
+    log: function(str, level) {
+        if (this._options.debug && (!level || level === 'info')) {
+            qq.log('[FineUploader] ' + str);
+        }
+        else if (level && level !== 'info') {
+            qq.log('[FineUploader] ' + str, level);
+
+        }
+    },
+    setParams: function(params, id) {
+        /*jshint eqeqeq: true, eqnull: true*/
+        if (id == null) {
+            this._options.request.params = params;
+        }
+        else {
+            this._paramsStore.setParams(params, id);
+        }
+    },
+    setDeleteFileParams: function(params, id) {
+        /*jshint eqeqeq: true, eqnull: true*/
+        if (id == null) {
+            this._options.deleteFile.params = params;
+        }
+        else {
+            this._deleteFileParamsStore.setParams(params, id);
+        }
+    },
+    setEndpoint: function(endpoint, id) {
+        /*jshint eqeqeq: true, eqnull: true*/
+        if (id == null) {
+            this._options.request.endpoint = endpoint;
+        }
+        else {
+            this._endpointStore.setEndpoint(endpoint, id);
+        }
+    },
+    getInProgress: function(){
+        return this._filesInProgress.length;
+    },
+    uploadStoredFiles: function(){
+        "use strict";
+        var idToUpload;
+
+        while(this._storedIds.length) {
+            idToUpload = this._storedIds.shift();
+            this._filesInProgress.push(idToUpload);
+            this._handler.upload(idToUpload);
+        }
+    },
+    clearStoredFiles: function(){
+        this._storedIds = [];
+    },
+    retry: function(id) {
+        if (this._onBeforeManualRetry(id)) {
+            this._handler.retry(id);
+            return true;
+        }
+        else {
+            return false;
+        }
+    },
+    cancel: function(id) {
+        this._handler.cancel(id);
+    },
+    cancelAll: function() {
+        var storedIdsCopy = [],
+            self = this;
+
+        qq.extend(storedIdsCopy, this._storedIds);
+        qq.each(storedIdsCopy, function(idx, storedFileId) {
+            self.cancel(storedFileId);
+        });
+
+        this._handler.cancelAll();
+    },
+    reset: function() {
+        this.log("Resetting uploader...");
+        this._handler.reset();
+        this._filesInProgress = [];
+        this._storedIds = [];
+        this._autoRetries = [];
+        this._retryTimeouts = [];
+        this._preventRetries = [];
+        this._button.reset();
+        this._paramsStore.reset();
+        this._endpointStore.reset();
+    },
+    addFiles: function(filesBlobDataOrInputs) {
+        var self = this,
+            verifiedFilesOrInputs = [],
+            index, fileOrInput;
+
+        if (filesBlobDataOrInputs) {
+            if (!window.FileList || !(filesBlobDataOrInputs instanceof FileList)) {
+                filesBlobDataOrInputs = [].concat(filesBlobDataOrInputs);
+            }
+
+            for (index = 0; index < filesBlobDataOrInputs.length; index+=1) {
+                fileOrInput = filesBlobDataOrInputs[index];
+
+                if (qq.isFileOrInput(fileOrInput)) {
+                    verifiedFilesOrInputs.push(fileOrInput);
+                }
+                else {
+                    self.log(fileOrInput + ' is not a File or INPUT element!  Ignoring!', 'warn');
+                }
+            }
+
+            this.log('Processing ' + verifiedFilesOrInputs.length + ' files or inputs...');
+            this._uploadFileOrBlobDataList(verifiedFilesOrInputs);
+        }
+    },
+    addBlobs: function(blobDataOrArray) {
+        if (blobDataOrArray) {
+            var blobDataArray = [].concat(blobDataOrArray),
+                verifiedBlobDataList = [],
+                self = this;
+
+            qq.each(blobDataArray, function(idx, blobData) {
+                if (qq.isBlob(blobData) && !qq.isFileOrInput(blobData)) {
+                    verifiedBlobDataList.push({
+                        blob: blobData,
+                        name: self._options.blobs.defaultName
+                    });
+                }
+                else if (qq.isObject(blobData) && blobData.blob && blobData.name) {
+                    verifiedBlobDataList.push(blobData);
+                }
+                else {
+                    self.log("addBlobs: entry at index " + idx + " is not a Blob or a BlobData object", "error");
+                }
+            });
+
+            this._uploadFileOrBlobDataList(verifiedBlobDataList);
+        }
+        else {
+            this.log("undefined or non-array parameter passed into addBlobs", "error");
+        }
+    },
+    getUuid: function(id) {
+        return this._handler.getUuid(id);
+    },
+    getResumableFilesData: function() {
+        return this._handler.getResumableFilesData();
+    },
+    getSize: function(id) {
+        return this._handler.getSize(id);
+    },
+    getFile: function(fileOrBlobId) {
+        return this._handler.getFile(fileOrBlobId);
+    },
+    deleteFile: function(id) {
+        this._onSubmitDelete(id);
+    },
+    setDeleteFileEndpoint: function(endpoint, id) {
+        /*jshint eqeqeq: true, eqnull: true*/
+        if (id == null) {
+            this._options.deleteFile.endpoint = endpoint;
+        }
+        else {
+            this._deleteFileEndpointStore.setEndpoint(endpoint, id);
+        }
+    },
+    _createUploadButton: function(element){
+        var self = this;
+
+        var button = new qq.UploadButton({
+            element: element,
+            multiple: this._options.multiple && qq.isXhrUploadSupported(),
+            acceptFiles: this._options.validation.acceptFiles,
+            onChange: function(input){
+                self._onInputChange(input);
+            },
+            hoverClass: this._options.classes.buttonHover,
+            focusClass: this._options.classes.buttonFocus
+        });
+
+        this._disposeSupport.addDisposer(function() { button.dispose(); });
+        return button;
+    },
+    _createUploadHandler: function(){
+        var self = this;
+
+        return new qq.UploadHandler({
+            debug: this._options.debug,
+            forceMultipart: this._options.request.forceMultipart,
+            maxConnections: this._options.maxConnections,
+            customHeaders: this._options.request.customHeaders,
+            inputName: this._options.request.inputName,
+            uuidParamName: this._options.request.uuidName,
+            totalFileSizeParamName: this._options.request.totalFileSizeName,
+            cors: this._options.cors,
+            demoMode: this._options.demoMode,
+            paramsInBody: this._options.request.paramsInBody,
+            paramsStore: this._paramsStore,
+            endpointStore: this._endpointStore,
+            chunking: this._options.chunking,
+            resume: this._options.resume,
+            blobs: this._options.blobs,
+            log: function(str, level) {
+                self.log(str, level);
+            },
+            onProgress: function(id, name, loaded, total){
+                self._onProgress(id, name, loaded, total);
+                self._options.callbacks.onProgress(id, name, loaded, total);
+            },
+            onComplete: function(id, name, result, xhr){
+                self._onComplete(id, name, result, xhr);
+                self._options.callbacks.onComplete(id, name, result);
+            },
+            onCancel: function(id, name){
+                self._onCancel(id, name);
+                self._options.callbacks.onCancel(id, name);
+            },
+            onUpload: function(id, name){
+                self._onUpload(id, name);
+                self._options.callbacks.onUpload(id, name);
+            },
+            onUploadChunk: function(id, name, chunkData){
+                self._options.callbacks.onUploadChunk(id, name, chunkData);
+            },
+            onResume: function(id, name, chunkData) {
+                return self._options.callbacks.onResume(id, name, chunkData);
+            },
+            onAutoRetry: function(id, name, responseJSON, xhr) {
+                self._preventRetries[id] = responseJSON[self._options.retry.preventRetryResponseProperty];
+
+                if (self._shouldAutoRetry(id, name, responseJSON)) {
+                    self._maybeParseAndSendUploadError(id, name, responseJSON, xhr);
+                    self._options.callbacks.onAutoRetry(id, name, self._autoRetries[id] + 1);
+                    self._onBeforeAutoRetry(id, name);
+
+                    self._retryTimeouts[id] = setTimeout(function() {
+                        self._onAutoRetry(id, name, responseJSON)
+                    }, self._options.retry.autoAttemptDelay * 1000);
+
+                    return true;
+                }
+                else {
+                    return false;
+                }
+            }
+        });
+    },
+    _createDeleteHandler: function() {
+        var self = this;
+
+        return new qq.DeleteFileAjaxRequestor({
+            maxConnections: this._options.maxConnections,
+            customHeaders: this._options.deleteFile.customHeaders,
+            paramsStore: this._deleteFileParamsStore,
+            endpointStore: this._deleteFileEndpointStore,
+            demoMode: this._options.demoMode,
+            cors: this._options.cors,
+            log: function(str, level) {
+                self.log(str, level);
+            },
+            onDelete: function(id) {
+                self._onDelete(id);
+                self._options.callbacks.onDelete(id);
+            },
+            onDeleteComplete: function(id, xhr, isError) {
+                self._onDeleteComplete(id, xhr, isError);
+                self._options.callbacks.onDeleteComplete(id, xhr, isError);
+            }
+
+        });
+    },
+    _preventLeaveInProgress: function(){
+        var self = this;
+
+        this._disposeSupport.attach(window, 'beforeunload', function(e){
+            if (!self._filesInProgress.length){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, name){
+        if (this._options.autoUpload) {
+            this._filesInProgress.push(id);
+        }
+    },
+    _onProgress: function(id, name, loaded, total){
+    },
+    _onComplete: function(id, name, result, xhr){
+        this._removeFromFilesInProgress(id);
+        this._maybeParseAndSendUploadError(id, name, result, xhr);
+    },
+    _onCancel: function(id, name){
+        this._removeFromFilesInProgress(id);
+
+        clearTimeout(this._retryTimeouts[id]);
+
+        var storedItemIndex = qq.indexOf(this._storedIds, id);
+        if (!this._options.autoUpload && storedItemIndex >= 0) {
+            this._storedIds.splice(storedItemIndex, 1);
+        }
+    },
+    _isDeletePossible: function() {
+        return (this._options.deleteFile.enabled &&
+            (!this._options.cors.expected ||
+                (this._options.cors.expected && (qq.ie10() || !qq.ie()))
+                )
+            );
+    },
+    _onSubmitDelete: function(id) {
+        if (this._isDeletePossible()) {
+            if (this._options.callbacks.onSubmitDelete(id)) {
+                this._deleteHandler.sendDelete(id, this.getUuid(id));
+            }
+        }
+        else {
+            this.log("Delete request ignored for ID " + id + ", delete feature is disabled or request not possible " +
+                "due to CORS on a user agent that does not support pre-flighting.", "warn");
+            return false;
+        }
+    },
+    _onDelete: function(fileId) {},
+    _onDeleteComplete: function(id, xhr, isError) {
+        var name = this._handler.getName(id);
+
+        if (isError) {
+            this.log("Delete request for '" + name + "' has failed.", "error");
+            this._options.callbacks.onError(id, name, "Delete request failed with response code " + xhr.status);
+        }
+        else {
+            this.log("Delete request for '" + name + "' has succeeded.");
+        }
+    },
+    _removeFromFilesInProgress: function(id) {
+        var index = qq.indexOf(this._filesInProgress, id);
+        if (index >= 0) {
+            this._filesInProgress.splice(index, 1);
+        }
+    },
+    _onUpload: function(id, name){},
+    _onInputChange: function(input){
+        if (qq.isXhrUploadSupported()){
+            this.addFiles(input.files);
+        } else {
+            this.addFiles(input);
+        }
+        this._button.reset();
+    },
+    _onBeforeAutoRetry: function(id, name) {
+        this.log("Waiting " + this._options.retry.autoAttemptDelay + " seconds before retrying " + name + "...");
+    },
+    _onAutoRetry: function(id, name, responseJSON) {
+        this.log("Retrying " + name + "...");
+        this._autoRetries[id]++;
+        this._handler.retry(id);
+    },
+    _shouldAutoRetry: function(id, name, responseJSON) {
+        if (!this._preventRetries[id] && this._options.retry.enableAuto) {
+            if (this._autoRetries[id] === undefined) {
+                this._autoRetries[id] = 0;
+            }
+
+            return this._autoRetries[id] < this._options.retry.maxAutoAttempts
+        }
+
+        return false;
+    },
+    //return false if we should not attempt the requested retry
+    _onBeforeManualRetry: function(id) {
+        if (this._preventRetries[id]) {
+            this.log("Retries are forbidden for id " + id, 'warn');
+            return false;
+        }
+        else if (this._handler.isValid(id)) {
+            var fileName = this._handler.getName(id);
+
+            if (this._options.callbacks.onManualRetry(id, fileName) === false) {
+                return false;
+            }
+
+            this.log("Retrying upload for '" + fileName + "' (id: " + id + ")...");
+            this._filesInProgress.push(id);
+            return true;
+        }
+        else {
+            this.log("'" + id + "' is not a valid file ID", 'error');
+            return false;
+        }
+    },
+    _maybeParseAndSendUploadError: function(id, name, response, xhr) {
+        //assuming no one will actually set the response code to something other than 200 and still set 'success' to true
+        if (!response.success){
+            if (xhr && xhr.status !== 200 && !response.error) {
+                this._options.callbacks.onError(id, name, "XHR returned response code " + xhr.status);
+            }
+            else {
+                var errorReason = response.error ? response.error : "Upload failure reason unknown";
+                this._options.callbacks.onError(id, name, errorReason);
+            }
+        }
+    },
+    _uploadFileOrBlobDataList: function(fileOrBlobDataList){
+        var validationDescriptors, index, batchInvalid;
+
+        validationDescriptors = this._getValidationDescriptors(fileOrBlobDataList);
+        batchInvalid = this._options.callbacks.onValidateBatch(validationDescriptors) === false;
+
+        if (!batchInvalid) {
+            if (fileOrBlobDataList.length > 0) {
+                for (index = 0; index < fileOrBlobDataList.length; index++){
+                    if (this._validateFileOrBlobData(fileOrBlobDataList[index])){
+                        this._upload(fileOrBlobDataList[index]);
+                    } else {
+                        if (this._options.validation.stopOnFirstInvalidFile){
+                            return;
+                        }
+                    }
+                }
+            }
+            else {
+                this._error('noFilesError', "");
+            }
+        }
+    },
+    _upload: function(blobOrFileContainer){
+        var id = this._handler.add(blobOrFileContainer);
+        var name = this._handler.getName(id);
+
+        if (this._options.callbacks.onSubmit(id, name) !== false){
+            this._onSubmit(id, name);
+            if (this._options.autoUpload) {
+                this._handler.upload(id);
+            }
+            else {
+                this._storeForLater(id);
+            }
+        }
+    },
+    _storeForLater: function(id) {
+        this._storedIds.push(id);
+    },
+    _validateFileOrBlobData: function(fileOrBlobData){
+        var validationDescriptor, name, size;
+
+        validationDescriptor = this._getValidationDescriptor(fileOrBlobData);
+        name = validationDescriptor.name;
+        size = validationDescriptor.size;
+
+        if (this._options.callbacks.onValidate(validationDescriptor) === false) {
+            return false;
+        }
+
+        if (qq.isFileOrInput(fileOrBlobData) && !this._isAllowedExtension(name)){
+            this._error('typeError', name);
+            return false;
+
+        }
+        else if (size === 0){
+            this._error('emptyError', name);
+            return false;
+
+        }
+        else if (size && this._options.validation.sizeLimit && size > this._options.validation.sizeLimit){
+            this._error('sizeError', name);
+            return false;
+
+        }
+        else if (size && size < this._options.validation.minSizeLimit){
+            this._error('minSizeError', name);
+            return false;
+        }
+
+        return true;
+    },
+    _error: function(code, name){
+        var message = this._options.messages[code];
+        function r(name, replacement){ message = message.replace(name, replacement); }
+
+        var extensions = this._options.validation.allowedExtensions.join(', ').toLowerCase();
+
+        r('{file}', this._options.formatFileName(name));
+        r('{extensions}', extensions);
+        r('{sizeLimit}', this._formatSize(this._options.validation.sizeLimit));
+        r('{minSizeLimit}', this._formatSize(this._options.validation.minSizeLimit));
+
+        this._options.callbacks.onError(null, name, message);
+
+        return message;
+    },
+    _isAllowedExtension: function(fileName){
+        var allowed = this._options.validation.allowedExtensions,
+            valid = false;
+
+        if (!allowed.length) {
+            return true;
+        }
+
+        qq.each(allowed, function(idx, allowedExt) {
+            /*jshint eqeqeq: true, eqnull: true*/
+            var extRegex = new RegExp('\\.' + allowedExt + "$", 'i');
+
+            if (fileName.match(extRegex) != null) {
+                valid = true;
+                return false;
+            }
+        });
+
+        return valid;
+    },
+    _formatSize: function(bytes){
+        var i = -1;
+        do {
+            bytes = bytes / 1024;
+            i++;
+        } while (bytes > 99);
+
+        return Math.max(bytes, 0.1).toFixed(1) + this._options.text.sizeSymbols[i];
+    },
+    _wrapCallbacks: function() {
+        var self, safeCallback;
+
+        self = this;
+
+        safeCallback = function(name, callback, args) {
+            try {
+                return callback.apply(self, args);
+            }
+            catch (exception) {
+                self.log("Caught exception in '" + name + "' callback - " + exception.message, 'error');
+            }
+        }
+
+        for (var prop in this._options.callbacks) {
+            (function() {
+                var callbackName, callbackFunc;
+                callbackName = prop;
+                callbackFunc = self._options.callbacks[callbackName];
+                self._options.callbacks[callbackName] = function() {
+                    return safeCallback(callbackName, callbackFunc, arguments);
+                }
+            }());
+        }
+    },
+    _parseFileOrBlobDataName: function(fileOrBlobData) {
+        var name;
+
+        if (qq.isFileOrInput(fileOrBlobData)) {
+            if (fileOrBlobData.value) {
+                // it is a file input
+                // get input value and remove path to normalize
+                name = fileOrBlobData.value.replace(/.*(\/|\\)/, "");
+            } else {
+                // fix missing properties in Safari 4 and firefox 11.0a2
+                name = (fileOrBlobData.fileName !== null && fileOrBlobData.fileName !== undefined) ? fileOrBlobData.fileName : fileOrBlobData.name;
+            }
+        }
+        else {
+            name = fileOrBlobData.name;
+        }
+
+        return name;
+    },
+    _parseFileOrBlobDataSize: function(fileOrBlobData) {
+        var size;
+
+        if (qq.isFileOrInput(fileOrBlobData)) {
+            if (!fileOrBlobData.value){
+                // fix missing properties in Safari 4 and firefox 11.0a2
+                size = (fileOrBlobData.fileSize !== null && fileOrBlobData.fileSize !== undefined) ? fileOrBlobData.fileSize : fileOrBlobData.size;
+            }
+        }
+        else {
+            size = fileOrBlobData.blob.size;
+        }
+
+        return size;
+    },
+    _getValidationDescriptor: function(fileOrBlobData) {
+        var name, size, fileDescriptor;
+
+        fileDescriptor = {};
+        name = this._parseFileOrBlobDataName(fileOrBlobData);
+        size = this._parseFileOrBlobDataSize(fileOrBlobData);
+
+        fileDescriptor.name = name;
+        if (size) {
+            fileDescriptor.size = size;
+        }
+
+        return fileDescriptor;
+    },
+    _getValidationDescriptors: function(files) {
+        var self = this,
+            fileDescriptors = [];
+
+        qq.each(files, function(idx, file) {
+            fileDescriptors.push(self._getValidationDescriptor(file));
+        });
+
+        return fileDescriptors;
+    },
+    _createParamsStore: function(type) {
+        var paramsStore = {},
+            self = this;
+
+        return {
+            setParams: function(params, id) {
+                var paramsCopy = {};
+                qq.extend(paramsCopy, params);
+                paramsStore[id] = paramsCopy;
+            },
+
+            getParams: function(id) {
+                /*jshint eqeqeq: true, eqnull: true*/
+                var paramsCopy = {};
+
+                if (id != null && paramsStore[id]) {
+                    qq.extend(paramsCopy, paramsStore[id]);
+                }
+                else {
+                    qq.extend(paramsCopy, self._options[type].params);
+                }
+
+                return paramsCopy;
+            },
+
+            remove: function(fileId) {
+                return delete paramsStore[fileId];
+            },
+
+            reset: function() {
+                paramsStore = {};
+            }
+        };
+    },
+    _createEndpointStore: function(type) {
+        var endpointStore = {},
+        self = this;
+
+        return {
+            setEndpoint: function(endpoint, id) {
+                endpointStore[id] = endpoint;
+            },
+
+            getEndpoint: function(id) {
+                /*jshint eqeqeq: true, eqnull: true*/
+                if (id != null && endpointStore[id]) {
+                    return endpointStore[id];
+                }
+
+                return self._options[type].endpoint;
+            },
+
+            remove: function(fileId) {
+                return delete endpointStore[fileId];
+            },
+
+            reset: function() {
+                endpointStore = {};
+            }
+        };
+    }
+};
+/*globals qq, document*/
+qq.DragAndDrop = function(o) {
+    "use strict";
+
+    var options, dz, dirPending,
+        droppedFiles = [],
+        droppedEntriesCount = 0,
+        droppedEntriesParsedCount = 0,
+        disposeSupport = new qq.DisposeSupport();
+
+     options = {
+        dropArea: null,
+        extraDropzones: [],
+        hideDropzones: true,
+        multiple: true,
+        classes: {
+            dropActive: null
+        },
+        callbacks: {
+            dropProcessing: function(isProcessing, files) {},
+            error: function(code, filename) {},
+            log: function(message, level) {}
+        }
+    };
+
+    qq.extend(options, o);
+
+    function maybeUploadDroppedFiles() {
+        if (droppedEntriesCount === droppedEntriesParsedCount && !dirPending) {
+            options.callbacks.log('Grabbed ' + droppedFiles.length + " files after tree traversal.");
+            dz.dropDisabled(false);
+            options.callbacks.dropProcessing(false, droppedFiles);
+        }
+    }
+    function addDroppedFile(file) {
+        droppedFiles.push(file);
+        droppedEntriesParsedCount+=1;
+        maybeUploadDroppedFiles();
+    }
+
+    function traverseFileTree(entry) {
+        var dirReader, i;
+
+        droppedEntriesCount+=1;
+
+        if (entry.isFile) {
+            entry.file(function(file) {
+                addDroppedFile(file);
+            });
+        }
+        else if (entry.isDirectory) {
+            dirPending = true;
+            dirReader = entry.createReader();
+            dirReader.readEntries(function(entries) {
+                droppedEntriesParsedCount+=1;
+                for (i = 0; i < entries.length; i+=1) {
+                    traverseFileTree(entries[i]);
+                }
+
+                dirPending = false;
+
+                if (!entries.length) {
+                    maybeUploadDroppedFiles();
+                }
+            });
+        }
+    }
+
+    function handleDataTransfer(dataTransfer) {
+        var i, items, entry;
+
+        options.callbacks.dropProcessing(true);
+        dz.dropDisabled(true);
+
+        if (dataTransfer.files.length > 1 && !options.multiple) {
+            options.callbacks.dropProcessing(false);
+            options.callbacks.error('tooManyFilesError', "");
+            dz.dropDisabled(false);
+        }
+        else {
+            droppedFiles = [];
+            droppedEntriesCount = 0;
+            droppedEntriesParsedCount = 0;
+
+            if (qq.isFolderDropSupported(dataTransfer)) {
+                items = dataTransfer.items;
+
+                for (i = 0; i < items.length; i+=1) {
+                    entry = items[i].webkitGetAsEntry();
+                    if (entry) {
+                        //due to a bug in Chrome's File System API impl - #149735
+                        if (entry.isFile) {
+                            droppedFiles.push(items[i].getAsFile());
+                            if (i === items.length-1) {
+                                maybeUploadDroppedFiles();
+                            }
+                        }
+
+                        else {
+                            traverseFileTree(entry);
+                        }
+                    }
+                }
+            }
+            else {
+                options.callbacks.dropProcessing(false, dataTransfer.files);
+                dz.dropDisabled(false);
+            }
+        }
+    }
+
+    function setupDropzone(dropArea){
+        dz = new qq.UploadDropZone({
+            element: dropArea,
+            onEnter: function(e){
+                qq(dropArea).addClass(options.classes.dropActive);
+                e.stopPropagation();
+            },
+            onLeaveNotDescendants: function(e){
+                qq(dropArea).removeClass(options.classes.dropActive);
+            },
+            onDrop: function(e){
+                if (options.hideDropzones) {
+                    qq(dropArea).hide();
+                }
+                qq(dropArea).removeClass(options.classes.dropActive);
+
+                handleDataTransfer(e.dataTransfer);
+            }
+        });
+
+        disposeSupport.addDisposer(function() {
+            dz.dispose();
+        });
+
+        if (options.hideDropzones) {
+            qq(dropArea).hide();
+        }
+    }
+
+    function isFileDrag(dragEvent) {
+        var fileDrag;
+
+        qq.each(dragEvent.dataTransfer.types, function(key, val) {
+            if (val === 'Files') {
+                fileDrag = true;
+                return false;
+            }
+        });
+
+        return fileDrag;
+    }
+
+    function setupDragDrop(){
+        if (options.dropArea) {
+            options.extraDropzones.push(options.dropArea);
+        }
+
+        var i, dropzones = options.extraDropzones;
+
+        for (i=0; i < dropzones.length; i+=1){
+            setupDropzone(dropzones[i]);
+        }
+
+        // IE <= 9 does not support the File API used for drag+drop uploads
+        if (options.dropArea && (!qq.ie() || qq.ie10())) {
+            disposeSupport.attach(document, 'dragenter', function(e) {
+                if (!dz.dropDisabled() && isFileDrag(e)) {
+                    if (qq(options.dropArea).hasClass(options.classes.dropDisabled)) {
+                        return;
+                    }
+
+                    options.dropArea.style.display = 'block';
+                    for (i=0; i < dropzones.length; i+=1) {
+                        dropzones[i].style.display = 'block';
+                    }
+                }
+            });
+        }
+        disposeSupport.attach(document, 'dragleave', function(e){
+            if (options.hideDropzones && qq.FineUploader.prototype._leaving_document_out(e)) {
+                for (i=0; i < dropzones.length; i+=1) {
+                    qq(dropzones[i]).hide();
+                }
+            }
+        });
+        disposeSupport.attach(document, 'drop', function(e){
+            if (options.hideDropzones) {
+                for (i=0; i < dropzones.length; i+=1) {
+                    qq(dropzones[i]).hide();
+                }
+            }
+            e.preventDefault();
+        });
+    }
+
+    return {
+        setup: function() {
+            setupDragDrop();
+        },
+
+        setupExtraDropzone: function(element) {
+            options.extraDropzones.push(element);
+            setupDropzone(element);
+        },
+
+        removeExtraDropzone: function(element) {
+            var i, dzs = options.extraDropzones;
+            for(i in dzs) {
+                if (dzs[i] === element) {
+                    return dzs.splice(i, 1);
+                }
+            }
+        },
+
+        dispose: function() {
+            disposeSupport.dispose();
+            dz.dispose();
+        }
+    };
+};
+
+
+qq.UploadDropZone = function(o){
+    "use strict";
+
+    var options, element, preventDrop, dropOutsideDisabled, disposeSupport = new qq.DisposeSupport();
+
+    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(options, o);
+    element = options.element;
+
+    function dragover_should_be_canceled(){
+        return qq.safari() || (qq.firefox() && qq.windows());
+    }
+
+    function disableDropOutside(e){
+        // run only once for all instances
+        if (!dropOutsideDisabled ){
+
+            // for these cases we need to catch onDrop to reset dropArea
+            if (dragover_should_be_canceled){
+               disposeSupport.attach(document, 'dragover', function(e){
+                    e.preventDefault();
+                });
+            } else {
+                disposeSupport.attach(document, 'dragover', function(e){
+                    if (e.dataTransfer){
+                        e.dataTransfer.dropEffect = 'none';
+                        e.preventDefault();
+                    }
+                });
+            }
+
+            dropOutsideDisabled = true;
+        }
+    }
+
+    function isValidFileDrag(e){
+        // e.dataTransfer currently causing IE errors
+        // IE9 does NOT support file API, so drag-and-drop is not possible
+        if (qq.ie() && !qq.ie10()) {
+            return false;
+        }
+
+        var effectTest, dt = e.dataTransfer,
+        // do not check dt.types.contains in webkit, because it crashes safari 4
+        isSafari = qq.safari();
+
+        // dt.effectAllowed is none in Safari 5
+        // dt.types.contains check is for firefox
+        effectTest = qq.ie10() ? true : dt.effectAllowed !== 'none';
+        return dt && effectTest && (dt.files || (!isSafari && dt.types.contains && dt.types.contains('Files')));
+    }
+
+    function isOrSetDropDisabled(isDisabled) {
+        if (isDisabled !== undefined) {
+            preventDrop = isDisabled;
+        }
+        return preventDrop;
+    }
+
+    function attachEvents(){
+        disposeSupport.attach(element, 'dragover', function(e){
+            if (!isValidFileDrag(e)) {
+                return;
+            }
+
+            var effect = qq.ie() ? null : 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();
+        });
+
+        disposeSupport.attach(element, 'dragenter', function(e){
+            if (!isOrSetDropDisabled()) {
+                if (!isValidFileDrag(e)) {
+                    return;
+                }
+                options.onEnter(e);
+            }
+        });
+
+        disposeSupport.attach(element, 'dragleave', function(e){
+            if (!isValidFileDrag(e)) {
+                return;
+            }
+
+            options.onLeave(e);
+
+            var relatedTarget = document.elementFromPoint(e.clientX, e.clientY);
+            // do not fire when moving a mouse over a descendant
+            if (qq(this).contains(relatedTarget)) {
+                return;
+            }
+
+            options.onLeaveNotDescendants(e);
+        });
+
+        disposeSupport.attach(element, 'drop', function(e){
+            if (!isOrSetDropDisabled()) {
+                if (!isValidFileDrag(e)) {
+                    return;
+                }
+
+                e.preventDefault();
+                options.onDrop(e);
+            }
+        });
+    }
+
+    disableDropOutside();
+    attachEvents();
+
+    return {
+        dropDisabled: function(isDisabled) {
+            return isOrSetDropDisabled(isDisabled);
+        },
+
+        dispose: function() {
+            disposeSupport.dispose();
+        }
+    };
+};
+/**
+ * Class that creates upload widget with drag-and-drop and file list
+ * @inherits qq.FineUploaderBasic
+ */
+qq.FineUploader = function(o){
+    // call parent constructor
+    qq.FineUploaderBasic.apply(this, arguments);
+
+    // additional options
+    qq.extend(this._options, {
+        element: null,
+        listElement: null,
+        dragAndDrop: {
+            extraDropzones: [],
+            hideDropzones: true,
+            disableDefaultDropzone: false
+        },
+        text: {
+            uploadButton: 'Upload a file',
+            cancelButton: 'Cancel',
+            retryButton: 'Retry',
+            deleteButton: 'Delete',
+            failUpload: 'Upload failed',
+            dragZone: 'Drop files here to upload',
+            dropProcessing: 'Processing dropped files...',
+            formatProgress: "{percent}% of {total_size}",
+            waitingForResponse: "Processing..."
+        },
+        template: '<div class="qq-uploader">' +
+            ((!this._options.dragAndDrop || !this._options.dragAndDrop.disableDefaultDropzone) ? '<div class="qq-upload-drop-area"><span>{dragZoneText}</span></div>' : '') +
+            (!this._options.button ? '<div class="qq-upload-button"><div>{uploadButtonText}</div></div>' : '') +
+            '<span class="qq-drop-processing"><span>{dropProcessingText}</span><span class="qq-drop-processing-spinner"></span></span>' +
+            (!this._options.listElement ? '<ul class="qq-upload-list"></ul>' : '') +
+            '</div>',
+
+        // template for one item in file list
+        fileTemplate: '<li>' +
+            '<div class="qq-progress-bar"></div>' +
+            '<span class="qq-upload-spinner"></span>' +
+            '<span class="qq-upload-finished"></span>' +
+            '<span class="qq-upload-file"></span>' +
+            '<span class="qq-upload-size"></span>' +
+            '<a class="qq-upload-cancel" href="#">{cancelButtonText}</a>' +
+            '<a class="qq-upload-retry" href="#">{retryButtonText}</a>' +
+            '<a class="qq-upload-delete" href="#">{deleteButtonText}</a>' +
+            '<span class="qq-upload-status-text">{statusText}</span>' +
+            '</li>',
+        classes: {
+            button: 'qq-upload-button',
+            drop: 'qq-upload-drop-area',
+            dropActive: 'qq-upload-drop-area-active',
+            dropDisabled: 'qq-upload-drop-area-disabled',
+            list: 'qq-upload-list',
+            progressBar: 'qq-progress-bar',
+            file: 'qq-upload-file',
+            spinner: 'qq-upload-spinner',
+            finished: 'qq-upload-finished',
+            retrying: 'qq-upload-retrying',
+            retryable: 'qq-upload-retryable',
+            size: 'qq-upload-size',
+            cancel: 'qq-upload-cancel',
+            deleteButton: 'qq-upload-delete',
+            retry: 'qq-upload-retry',
+            statusText: 'qq-upload-status-text',
+
+            success: 'qq-upload-success',
+            fail: 'qq-upload-fail',
+
+            successIcon: null,
+            failIcon: null,
+
+            dropProcessing: 'qq-drop-processing',
+            dropProcessingSpinner: 'qq-drop-processing-spinner'
+        },
+        failedUploadTextDisplay: {
+            mode: 'default', //default, custom, or none
+            maxChars: 50,
+            responseProperty: 'error',
+            enableTooltip: true
+        },
+        messages: {
+            tooManyFilesError: "You may only drop one file"
+        },
+        retry: {
+            showAutoRetryNote: true,
+            autoRetryNote: "Retrying {retryNum}/{maxAuto}...",
+            showButton: false
+        },
+        deleteFile: {
+            forceConfirm: false,
+            confirmMessage: "Are you sure you want to delete {filename}?",
+            deletingStatusText: "Deleting...",
+            deletingFailedText: "Delete failed"
+
+        },
+        display: {
+            fileSizeOnSubmit: false
+        },
+        showMessage: function(message){
+            setTimeout(function() {
+                alert(message);
+            }, 0);
+        },
+        showConfirm: function(message, okCallback, cancelCallback) {
+            setTimeout(function() {
+                var result = confirm(message);
+                if (result) {
+                    okCallback();
+                }
+                else if (cancelCallback) {
+                    cancelCallback();
+                }
+            }, 0);
+        }
+    }, true);
+
+    // overwrite options with user supplied
+    qq.extend(this._options, o, true);
+    this._wrapCallbacks();
+
+    // overwrite the upload button text if any
+    // same for the Cancel button and Fail message text
+    this._options.template     = this._options.template.replace(/\{dragZoneText\}/g, this._options.text.dragZone);
+    this._options.template     = this._options.template.replace(/\{uploadButtonText\}/g, this._options.text.uploadButton);
+    this._options.template     = this._options.template.replace(/\{dropProcessingText\}/g, this._options.text.dropProcessing);
+    this._options.fileTemplate = this._options.fileTemplate.replace(/\{cancelButtonText\}/g, this._options.text.cancelButton);
+    this._options.fileTemplate = this._options.fileTemplate.replace(/\{retryButtonText\}/g, this._options.text.retryButton);
+    this._options.fileTemplate = this._options.fileTemplate.replace(/\{deleteButtonText\}/g, this._options.text.deleteButton);
+    this._options.fileTemplate = this._options.fileTemplate.replace(/\{statusText\}/g, "");
+
+    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;
+
+    if (!this._button) {
+        this._button = this._createUploadButton(this._find(this._element, 'button'));
+    }
+
+    this._bindCancelAndRetryEvents();
+
+    this._dnd = this._setupDragAndDrop();
+};
+
+// inherit from Basic Uploader
+qq.extend(qq.FineUploader.prototype, qq.FineUploaderBasic.prototype);
+
+qq.extend(qq.FineUploader.prototype, {
+    clearStoredFiles: function() {
+        qq.FineUploaderBasic.prototype.clearStoredFiles.apply(this, arguments);
+        this._listElement.innerHTML = "";
+    },
+    addExtraDropzone: function(element){
+        this._dnd.setupExtraDropzone(element);
+    },
+    removeExtraDropzone: function(element){
+        return this._dnd.removeExtraDropzone(element);
+    },
+    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;
+        }
+    },
+    reset: function() {
+        qq.FineUploaderBasic.prototype.reset.apply(this, arguments);
+        this._element.innerHTML = this._options.template;
+        this._listElement = this._options.listElement || this._find(this._element, 'list');
+        if (!this._options.button) {
+            this._button = this._createUploadButton(this._find(this._element, 'button'));
+        }
+        this._bindCancelAndRetryEvents();
+        this._dnd.dispose();
+        this._dnd = this._setupDragAndDrop();
+    },
+    _removeFileItem: function(fileId) {
+        var item = this.getItemByFileId(fileId);
+        qq(item).remove();
+    },
+    _setupDragAndDrop: function() {
+        var self = this,
+            dropProcessingEl = this._find(this._element, 'dropProcessing'),
+            dnd, preventSelectFiles, defaultDropAreaEl;
+
+        preventSelectFiles = function(event) {
+            event.preventDefault();
+        };
+
+        if (!this._options.dragAndDrop.disableDefaultDropzone) {
+            defaultDropAreaEl = this._find(this._options.element, 'drop');
+        }
+
+        dnd = new qq.DragAndDrop({
+            dropArea: defaultDropAreaEl,
+            extraDropzones: this._options.dragAndDrop.extraDropzones,
+            hideDropzones: this._options.dragAndDrop.hideDropzones,
+            multiple: this._options.multiple,
+            classes: {
+                dropActive: this._options.classes.dropActive
+            },
+            callbacks: {
+                dropProcessing: function(isProcessing, files) {
+                    var input = self._button.getInput();
+
+                    if (isProcessing) {
+                        qq(dropProcessingEl).css({display: 'block'});
+                        qq(input).attach('click', preventSelectFiles);
+                    }
+                    else {
+                        qq(dropProcessingEl).hide();
+                        qq(input).detach('click', preventSelectFiles);
+                    }
+
+                    if (files) {
+                        self.addFiles(files);
+                    }
+                },
+                error: function(code, filename) {
+                    self._error(code, filename);
+                },
+                log: function(message, level) {
+                    self.log(message, level);
+                }
+            }
+        });
+
+        dnd.setup();
+
+        return dnd;
+    },
+    _leaving_document_out: function(e){
+        return ((qq.chrome() || (qq.safari() && qq.windows())) && e.clientX == 0 && e.clientY == 0) // null coords for Chrome and Safari Windows
+            || (qq.firefox() && !e.relatedTarget); // null e.relatedTarget for Firefox
+    },
+    _storeForLater: function(id) {
+        qq.FineUploaderBasic.prototype._storeForLater.apply(this, arguments);
+        var item = this.getItemByFileId(id);
+        qq(this._find(item, 'spinner')).hide();
+    },
+    /**
+     * Gets one of the elements listed in this._options.classes
+     **/
+    _find: function(parent, type){
+        var element = qq(parent).getByClass(this._options.classes[type])[0];
+        if (!element){
+            throw new Error('element not found ' + type);
+        }
+
+        return element;
+    },
+    _onSubmit: function(id, name){
+        qq.FineUploaderBasic.prototype._onSubmit.apply(this, arguments);
+        this._addToList(id, name);
+    },
+    // Update the progress bar & percentage as the file is uploaded
+    _onProgress: function(id, name, loaded, total){
+        qq.FineUploaderBasic.prototype._onProgress.apply(this, arguments);
+
+        var item, progressBar, percent, cancelLink;
+
+        item = this.getItemByFileId(id);
+        progressBar = this._find(item, 'progressBar');
+        percent = Math.round(loaded / total * 100);
+
+        if (loaded === total) {
+            cancelLink = this._find(item, 'cancel');
+            qq(cancelLink).hide();
+
+            qq(progressBar).hide();
+            qq(this._find(item, 'statusText')).setText(this._options.text.waitingForResponse);
+
+            // If last byte was sent, display total file size
+            this._displayFileSize(id);
+        }
+        else {
+            // If still uploading, display percentage - total size is actually the total request(s) size
+            this._displayFileSize(id, loaded, total);
+
+            qq(progressBar).css({display: 'block'});
+        }
+
+        // Update progress bar element
+        qq(progressBar).css({width: percent + '%'});
+    },
+    _onComplete: function(id, name, result, xhr){
+        qq.FineUploaderBasic.prototype._onComplete.apply(this, arguments);
+
+        var item = this.getItemByFileId(id);
+
+        qq(this._find(item, 'statusText')).clearText();
+
+        qq(item).removeClass(this._classes.retrying);
+        qq(this._find(item, 'progressBar')).hide();
+
+        if (!this._options.disableCancelForFormUploads || qq.isXhrUploadSupported()) {
+            qq(this._find(item, 'cancel')).hide();
+        }
+        qq(this._find(item, 'spinner')).hide();
+
+        if (result.success) {
+            if (this._isDeletePossible()) {
+                this._showDeleteLink(id);
+            }
+
+            qq(item).addClass(this._classes.success);
+            if (this._classes.successIcon) {
+                this._find(item, 'finished').style.display = "inline-block";
+                qq(item).addClass(this._classes.successIcon);
+            }
+        } else {
+            qq(item).addClass(this._classes.fail);
+            if (this._classes.failIcon) {
+                this._find(item, 'finished').style.display = "inline-block";
+                qq(item).addClass(this._classes.failIcon);
+            }
+            if (this._options.retry.showButton && !this._preventRetries[id]) {
+                qq(item).addClass(this._classes.retryable);
+            }
+            this._controlFailureTextDisplay(item, result);
+        }
+    },
+    _onUpload: function(id, name){
+        qq.FineUploaderBasic.prototype._onUpload.apply(this, arguments);
+
+        this._showSpinner(id);
+    },
+    _onCancel: function(id, name) {
+        qq.FineUploaderBasic.prototype._onCancel.apply(this, arguments);
+        this._removeFileItem(id);
+    },
+    _onBeforeAutoRetry: function(id) {
+        var item, progressBar, failTextEl, retryNumForDisplay, maxAuto, retryNote;
+
+        qq.FineUploaderBasic.prototype._onBeforeAutoRetry.apply(this, arguments);
+
+        item = this.getItemByFileId(id);
+        progressBar = this._find(item, 'progressBar');
+
+        this._showCancelLink(item);
+        progressBar.style.width = 0;
+        qq(progressBar).hide();
+
+        if (this._options.retry.showAutoRetryNote) {
+            failTextEl = this._find(item, 'statusText');
+            retryNumForDisplay = this._autoRetries[id] + 1;
+            maxAuto = this._options.retry.maxAutoAttempts;
+
+            retryNote = this._options.retry.autoRetryNote.replace(/\{retryNum\}/g, retryNumForDisplay);
+            retryNote = retryNote.replace(/\{maxAuto\}/g, maxAuto);
+
+            qq(failTextEl).setText(retryNote);
+            if (retryNumForDisplay === 1) {
+                qq(item).addClass(this._classes.retrying);
+            }
+        }
+    },
+    //return false if we should not attempt the requested retry
+    _onBeforeManualRetry: function(id) {
+        if (qq.FineUploaderBasic.prototype._onBeforeManualRetry.apply(this, arguments)) {
+            var item = this.getItemByFileId(id);
+            this._find(item, 'progressBar').style.width = 0;
+            qq(item).removeClass(this._classes.fail);
+            qq(this._find(item, 'statusText')).clearText();
+            this._showSpinner(id);
+            this._showCancelLink(item);
+            return true;
+        }
+        return false;
+    },
+    _onSubmitDelete: function(id) {
+        if (this._isDeletePossible()) {
+            if (this._options.callbacks.onSubmitDelete(id) !== false) {
+                if (this._options.deleteFile.forceConfirm) {
+                    this._showDeleteConfirm(id);
+                }
+                else {
+                    this._sendDeleteRequest(id);
+                }
+            }
+        }
+        else {
+            this.log("Delete request ignored for file ID " + id + ", delete feature is disabled.", "warn");
+            return false;
+        }
+    },
+    _onDeleteComplete: function(id, xhr, isError) {
+        qq.FineUploaderBasic.prototype._onDeleteComplete.apply(this, arguments);
+
+        var item = this.getItemByFileId(id),
+            spinnerEl = this._find(item, 'spinner'),
+            statusTextEl = this._find(item, 'statusText');
+
+        qq(spinnerEl).hide();
+
+        if (isError) {
+            qq(statusTextEl).setText(this._options.deleteFile.deletingFailedText);
+            this._showDeleteLink(id);
+        }
+        else {
+            this._removeFileItem(id);
+        }
+    },
+    _sendDeleteRequest: function(id) {
+        var item = this.getItemByFileId(id),
+            deleteLink = this._find(item, 'deleteButton'),
+            statusTextEl = this._find(item, 'statusText');
+
+        qq(deleteLink).hide();
+        this._showSpinner(id);
+        qq(statusTextEl).setText(this._options.deleteFile.deletingStatusText);
+        this._deleteHandler.sendDelete(id, this.getUuid(id));
+    },
+    _showDeleteConfirm: function(id) {
+        var fileName = this._handler.getName(id),
+            confirmMessage = this._options.deleteFile.confirmMessage.replace(/\{filename\}/g, fileName),
+            uuid = this.getUuid(id),
+            self = this;
+
+        this._options.showConfirm(confirmMessage, function() {
+            self._sendDeleteRequest(id);
+        });
+    },
+    _addToList: function(id, name){
+        var item = qq.toElement(this._options.fileTemplate);
+        if (this._options.disableCancelForFormUploads && !qq.isXhrUploadSupported()) {
+            var cancelLink = this._find(item, 'cancel');
+            qq(cancelLink).remove();
+        }
+
+        item.qqFileId = id;
+
+        var fileElement = this._find(item, 'file');
+        qq(fileElement).setText(this._options.formatFileName(name));
+        qq(this._find(item, 'size')).hide();
+        if (!this._options.multiple) {
+            this._handler.cancelAll();
+            this._clearList();
+        }
+
+        this._listElement.appendChild(item);
+
+        if (this._options.display.fileSizeOnSubmit && qq.isXhrUploadSupported()) {
+            this._displayFileSize(id);
+        }
+    },
+    _clearList: function(){
+        this._listElement.innerHTML = '';
+        this.clearStoredFiles();
+    },
+    _displayFileSize: function(id, loadedSize, totalSize) {
+        var item = this.getItemByFileId(id),
+            size = this.getSize(id),
+            sizeForDisplay = this._formatSize(size),
+            sizeEl = this._find(item, 'size');
+
+        if (loadedSize !== undefined && totalSize !== undefined) {
+            sizeForDisplay = this._formatProgress(loadedSize, totalSize);
+        }
+
+        qq(sizeEl).css({display: 'inline'});
+        qq(sizeEl).setText(sizeForDisplay);
+    },
+    /**
+     * delegate click event for cancel & retry links
+     **/
+    _bindCancelAndRetryEvents: function(){
+        var self = this,
+            list = this._listElement;
+
+        this._disposeSupport.attach(list, 'click', function(e){
+            e = e || window.event;
+            var target = e.target || e.srcElement;
+
+            if (qq(target).hasClass(self._classes.cancel) || qq(target).hasClass(self._classes.retry) || qq(target).hasClass(self._classes.deleteButton)){
+                qq.preventDefault(e);
+
+                var item = target.parentNode;
+                while(item.qqFileId === undefined) {
+                    item = target = target.parentNode;
+                }
+
+                if (qq(target).hasClass(self._classes.deleteButton)) {
+                    self.deleteFile(item.qqFileId);
+                }
+                else if (qq(target).hasClass(self._classes.cancel)) {
+                    self.cancel(item.qqFileId);
+                }
+                else {
+                    qq(item).removeClass(self._classes.retryable);
+                    self.retry(item.qqFileId);
+                }
+            }
+        });
+    },
+    _formatProgress: function (uploadedSize, totalSize) {
+        var message = this._options.text.formatProgress;
+        function r(name, replacement) { message = message.replace(name, replacement); }
+
+        r('{percent}', Math.round(uploadedSize / totalSize * 100));
+        r('{total_size}', this._formatSize(totalSize));
+        return message;
+    },
+    _controlFailureTextDisplay: function(item, response) {
+        var mode, maxChars, responseProperty, failureReason, shortFailureReason;
+
+        mode = this._options.failedUploadTextDisplay.mode;
+        maxChars = this._options.failedUploadTextDisplay.maxChars;
+        responseProperty = this._options.failedUploadTextDisplay.responseProperty;
+
+        if (mode === 'custom') {
+            failureReason = response[responseProperty];
+            if (failureReason) {
+                if (failureReason.length > maxChars) {
+                    shortFailureReason = failureReason.substring(0, maxChars) + '...';
+                }
+            }
+            else {
+                failureReason = this._options.text.failUpload;
+                this.log("'" + responseProperty + "' is not a valid property on the server response.", 'warn');
+            }
+
+            qq(this._find(item, 'statusText')).setText(shortFailureReason || failureReason);
+
+            if (this._options.failedUploadTextDisplay.enableTooltip) {
+                this._showTooltip(item, failureReason);
+            }
+        }
+        else if (mode === 'default') {
+            qq(this._find(item, 'statusText')).setText(this._options.text.failUpload);
+        }
+        else if (mode !== 'none') {
+            this.log("failedUploadTextDisplay.mode value of '" + mode + "' is not valid", 'warn');
+        }
+    },
+    _showTooltip: function(item, text) {
+        item.title = text;
+    },
+    _showSpinner: function(id) {
+        var item = this.getItemByFileId(id),
+            spinnerEl = this._find(item, 'spinner');
+
+        spinnerEl.style.display = "inline-block";
+    },
+    _showCancelLink: function(item) {
+        if (!this._options.disableCancelForFormUploads || qq.isXhrUploadSupported()) {
+            var cancelLink = this._find(item, 'cancel');
+
+            qq(cancelLink).css({display: 'inline'});
+        }
+    },
+    _showDeleteLink: function(id) {
+        var item = this.getItemByFileId(id),
+            deleteLink = this._find(item, 'deleteButton');
+
+        qq(deleteLink).css({display: 'inline'});
+    },
+    _error: function(code, name){
+        var message = qq.FineUploaderBasic.prototype._error.apply(this, arguments);
+        this._options.showMessage(message);
+    }
+});
+/** Generic class for sending non-upload ajax requests and handling the associated responses **/
+//TODO Use XDomainRequest if expectCors = true.  Not necessary now since only DELETE requests are sent and XDR doesn't support pre-flighting.
+/*globals qq, XMLHttpRequest*/
+qq.AjaxRequestor = function(o) {
+    "use strict";
+
+    var log, shouldParamsBeInQueryString,
+        queue = [],
+        requestState = [],
+        options = {
+            method: 'POST',
+            maxConnections: 3,
+            customHeaders: {},
+            endpointStore: {},
+            paramsStore: {},
+            successfulResponseCodes: [200],
+            demoMode: false,
+            cors: {
+                expected: false,
+                sendCredentials: false
+            },
+            log: function(str, level) {},
+            onSend: function(id) {},
+            onComplete: function(id, xhr, isError) {},
+            onCancel: function(id) {}
+        };
+
+    qq.extend(options, o);
+    log = options.log;
+    shouldParamsBeInQueryString = getMethod() === 'GET' || getMethod() === 'DELETE';
+
+
+    /**
+     * Removes element from queue, sends next request
+     */
+    function dequeue(id) {
+        var i = qq.indexOf(queue, id),
+            max = options.maxConnections,
+            nextId;
+
+        delete requestState[id];
+        queue.splice(i, 1);
+
+        if (queue.length >= max && i < max){
+            nextId = queue[max-1];
+            sendRequest(nextId);
+        }
+    }
+
+    function onComplete(id) {
+        var xhr = requestState[id].xhr,
+            method = getMethod(),
+            isError = false;
+
+        dequeue(id);
+
+        if (!isResponseSuccessful(xhr.status)) {
+            isError = true;
+            log(method + " request for " + id + " has failed - response code " + xhr.status, "error");
+        }
+
+        options.onComplete(id, xhr, isError);
+    }
+
+    function sendRequest(id) {
+        var xhr = new XMLHttpRequest(),
+            method = getMethod(),
+            params = {},
+            url;
+
+        options.onSend(id);
+
+        if (options.paramsStore.getParams) {
+            params = options.paramsStore.getParams(id);
+        }
+
+        url = createUrl(id, params);
+
+        requestState[id].xhr = xhr;
+        xhr.onreadystatechange = getReadyStateChangeHandler(id);
+        xhr.open(method, url, true);
+
+        if (options.cors.expected && options.cors.sendCredentials) {
+            xhr.withCredentials = true;
+        }
+
+        setHeaders(id);
+
+        log('Sending ' + method + " request for " + id);
+        if (!shouldParamsBeInQueryString && params) {
+            xhr.send(qq.obj2url(params, ""));
+        }
+        else {
+            xhr.send();
+        }
+    }
+
+    function createUrl(id, params) {
+        var endpoint = options.endpointStore.getEndpoint(id),
+            addToPath = requestState[id].addToPath;
+
+        if (addToPath !== undefined) {
+            endpoint += "/" + addToPath;
+        }
+
+        if (shouldParamsBeInQueryString && params) {
+            return qq.obj2url(params, endpoint);
+        }
+        else {
+            return endpoint;
+        }
+    }
+
+    function getReadyStateChangeHandler(id) {
+        var xhr = requestState[id].xhr;
+
+        return function() {
+            if (xhr.readyState === 4) {
+                onComplete(id, xhr);
+            }
+        };
+    }
+
+    function setHeaders(id) {
+        var xhr = requestState[id].xhr,
+            customHeaders = options.customHeaders;
+
+        xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
+        xhr.setRequestHeader("Cache-Control", "no-cache");
+
+        qq.each(customHeaders, function(name, val) {
+            xhr.setRequestHeader(name, val);
+        });
+    }
+
+    function cancelRequest(id) {
+        var xhr = requestState[id].xhr,
+            method = getMethod();
+
+        if (xhr) {
+            xhr.onreadystatechange = null;
+            xhr.abort();
+            dequeue(id);
+
+            log('Cancelled ' + method + " for " + id);
+            options.onCancel(id);
+
+            return true;
+        }
+
+        return false;
+    }
+
+    function isResponseSuccessful(responseCode) {
+        return qq.indexOf(options.successfulResponseCodes, responseCode) >= 0;
+    }
+
+    function getMethod() {
+        if (options.demoMode) {
+            return "GET";
+        }
+
+        return options.method;
+    }
+
+
+    return {
+        send: function(id, addToPath) {
+            requestState[id] = {
+                addToPath: addToPath
+            };
+
+            var len = queue.push(id);
+
+            // if too many active connections, wait...
+            if (len <= options.maxConnections){
+                sendRequest(id);
+            }
+        },
+        cancel: function(id) {
+            return cancelRequest(id);
+        }
+    };
+};
+/** Generic class for sending non-upload ajax requests and handling the associated responses **/
+/*globals qq, XMLHttpRequest*/
+qq.DeleteFileAjaxRequestor = function(o) {
+    "use strict";
+
+    var requestor,
+        options = {
+            endpointStore: {},
+            maxConnections: 3,
+            customHeaders: {},
+            paramsStore: {},
+            demoMode: false,
+            cors: {
+                expected: false,
+                sendCredentials: false
+            },
+            log: function(str, level) {},
+            onDelete: function(id) {},
+            onDeleteComplete: function(id, xhr, isError) {}
+        };
+
+    qq.extend(options, o);
+
+    requestor = new qq.AjaxRequestor({
+        method: 'DELETE',
+        endpointStore: options.endpointStore,
+        paramsStore: options.paramsStore,
+        maxConnections: options.maxConnections,
+        customHeaders: options.customHeaders,
+        successfulResponseCodes: [200, 202, 204],
+        demoMode: options.demoMode,
+        log: options.log,
+        onSend: options.onDelete,
+        onComplete: options.onDeleteComplete
+    });
+
+
+    return {
+        sendDelete: function(id, uuid) {
+            requestor.send(id, uuid);
+            options.log("Submitted delete file request for " + id);
+        }
+    };
+};
+qq.WindowReceiveMessage = function(o) {
+    var options = {
+            log: function(message, level) {}
+        },
+        callbackWrapperDetachers = {};
+
+    qq.extend(options, o);
+
+    return {
+        receiveMessage : function(id, callback) {
+            var onMessageCallbackWrapper = function(event) {
+                    callback(event.data);
+                };
+
+            if (window.postMessage) {
+                callbackWrapperDetachers[id] = qq(window).attach("message", onMessageCallbackWrapper);
+            }
+            else {
+                log("iframe message passing not supported in this browser!", "error");
+            }
+        },
+
+        stopReceivingMessages : function(id) {
+            if (window.postMessage) {
+                var detacher = callbackWrapperDetachers[id];
+                if (detacher) {
+                    detacher();
+                }
+            }
+        }
+    };
+};
+/**
+ * Class for uploading files, uploading itself is handled by child classes
+ */
+/*globals qq*/
+qq.UploadHandler = function(o) {
+    "use strict";
+
+    var queue = [],
+        options, log, dequeue, handlerImpl;
+
+    // Default options, can be overridden by the user
+    options = {
+        debug: false,
+        forceMultipart: true,
+        paramsInBody: false,
+        paramsStore: {},
+        endpointStore: {},
+        cors: {
+            expected: false,
+            sendCredentials: false
+        },
+        maxConnections: 3, // maximum number of concurrent uploads
+        uuidParamName: 'qquuid',
+        totalFileSizeParamName: 'qqtotalfilesize',
+        chunking: {
+            enabled: false,
+            partSize: 2000000, //bytes
+            paramNames: {
+                partIndex: 'qqpartindex',
+                partByteOffset: 'qqpartbyteoffset',
+                chunkSize: 'qqchunksize',
+                totalParts: 'qqtotalparts',
+                filename: 'qqfilename'
+            }
+        },
+        resume: {
+            enabled: false,
+            id: null,
+            cookiesExpireIn: 7, //days
+            paramNames: {
+                resuming: "qqresume"
+            }
+        },
+        blobs: {
+            paramNames: {
+                name: 'qqblobname'
+            }
+        },
+        log: function(str, level) {},
+        onProgress: function(id, fileName, loaded, total){},
+        onComplete: function(id, fileName, response, xhr){},
+        onCancel: function(id, fileName){},
+        onUpload: function(id, fileName){},
+        onUploadChunk: function(id, fileName, chunkData){},
+        onAutoRetry: function(id, fileName, response, xhr){},
+        onResume: function(id, fileName, chunkData){}
+
+    };
+    qq.extend(options, o);
+
+    log = options.log;
+
+    /**
+     * Removes element from queue, starts upload of next
+     */
+    dequeue = function(id) {
+        var i = qq.indexOf(queue, id),
+            max = options.maxConnections,
+            nextId;
+
+        if (i >= 0) {
+            queue.splice(i, 1);
+
+            if (queue.length >= max && i < max){
+                nextId = queue[max-1];
+                handlerImpl.upload(nextId);
+            }
+        }
+    };
+
+    if (qq.isXhrUploadSupported()) {
+        handlerImpl = new qq.UploadHandlerXhr(options, dequeue, log);
+    }
+    else {
+        handlerImpl = new qq.UploadHandlerForm(options, dequeue, log);
+    }
+
+
+    return {
+        /**
+         * Adds file or file input to the queue
+         * @returns id
+         **/
+        add: function(file){
+            return handlerImpl.add(file);
+        },
+        /**
+         * Sends the file identified by id
+         */
+        upload: function(id){
+            var len = queue.push(id);
+
+            // if too many active uploads, wait...
+            if (len <= options.maxConnections){
+                return handlerImpl.upload(id);
+            }
+        },
+        retry: function(id) {
+            var i = qq.indexOf(queue, id);
+            if (i >= 0) {
+                return handlerImpl.upload(id, true);
+            }
+            else {
+                return this.upload(id);
+            }
+        },
+        /**
+         * Cancels file upload by id
+         */
+        cancel: function(id) {
+            log('Cancelling ' + id);
+            options.paramsStore.remove(id);
+            handlerImpl.cancel(id);
+            dequeue(id);
+        },
+        /**
+         * Cancels all queued or in-progress uploads
+         */
+        cancelAll: function() {
+            var self = this,
+                queueCopy = [];
+
+            qq.extend(queueCopy, queue);
+            qq.each(queueCopy, function(idx, fileId) {
+                self.cancel(fileId);
+            });
+
+            queue = [];
+        },
+        /**
+         * Returns name of the file identified by id
+         */
+        getName: function(id){
+            return handlerImpl.getName(id);
+        },
+        /**
+         * Returns size of the file identified by id
+         */
+        getSize: function(id){
+            if (handlerImpl.getSize) {
+                return handlerImpl.getSize(id);
+            }
+        },
+        getFile: function(id) {
+            if (handlerImpl.getFile) {
+                return handlerImpl.getFile(id);
+            }
+        },
+        /**
+         * Returns id of files being uploaded or
+         * waiting for their turn
+         */
+        getQueue: function(){
+            return queue;
+        },
+        reset: function() {
+            log('Resetting upload handler');
+            queue = [];
+            handlerImpl.reset();
+        },
+        getUuid: function(id) {
+            return handlerImpl.getUuid(id);
+        },
+        /**
+         * Determine if the file exists.
+         */
+        isValid: function(id) {
+            return handlerImpl.isValid(id);
+        },
+        getResumableFilesData: function() {
+            if (handlerImpl.getResumableFilesData) {
+                return handlerImpl.getResumableFilesData();
+            }
+            return [];
+        }
+    };
+};
+/*globals qq, document, setTimeout*/
+/*globals clearTimeout*/
+qq.UploadHandlerForm = function(o, uploadCompleteCallback, logCallback) {
+    "use strict";
+
+    var options = o,
+        inputs = [],
+        uuids = [],
+        detachLoadEvents = {},
+        postMessageCallbackTimers = {},
+        uploadComplete = uploadCompleteCallback,
+        log = logCallback,
+        corsMessageReceiver = new qq.WindowReceiveMessage({log: log}),
+        onloadCallbacks = {},
+        api;
+
+
+    function detachLoadEvent(id) {
+        if (detachLoadEvents[id] !== undefined) {
+            detachLoadEvents[id]();
+            delete detachLoadEvents[id];
+        }
+    }
+
+    function registerPostMessageCallback(iframe, callback) {
+        var id = iframe.id;
+
+        onloadCallbacks[uuids[id]] = callback;
+
+        detachLoadEvents[id] = qq(iframe).attach('load', function() {
+            if (inputs[id]) {
+                log("Received iframe load event for CORS upload request (file id " + id + ")");
+
+                postMessageCallbackTimers[id] = setTimeout(function() {
+                    var errorMessage = "No valid message received from loaded iframe for file id " + id;
+                    log(errorMessage, "error");
+                    callback({
+                        error: errorMessage
+                    });
+                }, 1000);
+            }
+        });
+
+        corsMessageReceiver.receiveMessage(id, function(message) {
+            log("Received the following window message: '" + message + "'");
+            var response = qq.parseJson(message),
+                uuid = response.uuid,
+                onloadCallback;
+
+            if (uuid && onloadCallbacks[uuid]) {
+                clearTimeout(postMessageCallbackTimers[id]);
+                delete postMessageCallbackTimers[id];
+
+                detachLoadEvent(id);
+
+                onloadCallback = onloadCallbacks[uuid];
+
+                delete onloadCallbacks[uuid];
+                corsMessageReceiver.stopReceivingMessages(id);
+                onloadCallback(response);
+            }
+            else if (!uuid) {
+                log("'" + message + "' does not contain a UUID - ignoring.");
+            }
+        });
+    }
+
+    function attachLoadEvent(iframe, callback) {
+        /*jslint eqeq: true*/
+
+        if (options.cors.expected) {
+            registerPostMessageCallback(iframe, callback);
+        }
+        else {
+            detachLoadEvents[iframe.id] = qq(iframe).attach('load', function(){
+                log('Received response for ' + iframe.id);
+
+                // when we remove iframe from dom
+                // the request stops, but in IE load
+                // event fires
+                if (!iframe.parentNode){
+                    return;
+                }
+
+                try {
+                    // 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;
+                    }
+                }
+                catch (error) {
+                    //IE may throw an "access is denied" error when attempting to access contentDocument on the iframe in some cases
+                    log('Error when attempting to access iframe during handling of upload response (' + error + ")", 'error');
+                }
+
+                callback();
+            });
+        }
+    }
+
+    /**
+     * Returns json object received by iframe from server.
+     */
+    function getIframeContentJson(iframe) {
+        /*jshint evil: true*/
+
+        var response;
+
+        //IE may throw an "access is denied" error when attempting to access contentDocument on the iframe in some cases
+        try {
+            // iframe.contentWindow.document - for IE<7
+            var doc = iframe.contentDocument || iframe.contentWindow.document,
+                innerHTML = doc.body.innerHTML;
+
+            log("converting iframe's innerHTML to JSON");
+            log("innerHTML = " + innerHTML);
+            //plain text response may be wrapped in <pre> tag
+            if (innerHTML && innerHTML.match(/^<pre/i)) {
+                innerHTML = doc.body.firstChild.firstChild.nodeValue;
+            }
+
+            response = qq.parseJson(innerHTML);
+        } catch(error){
+            log('Error when attempting to parse form upload response (' + error + ")", 'error');
+            response = {success: false};
+        }
+
+        return response;
+    }
+
+    /**
+     * Creates iframe with unique name
+     */
+    function createIframe(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 + '" />');
+
+        iframe.setAttribute('id', id);
+
+        iframe.style.display = 'none';
+        document.body.appendChild(iframe);
+
+        return iframe;
+    }
+
+    /**
+     * Creates form, that will be submitted to iframe
+     */
+    function createForm(id, iframe){
+        var params = options.paramsStore.getParams(id),
+            protocol = options.demoMode ? "GET" : "POST",
+            form = qq.toElement('<form method="' + protocol + '" enctype="multipart/form-data"></form>'),
+            endpoint = options.endpointStore.getEndpoint(id),
+            url = endpoint;
+
+        params[options.uuidParamName] = uuids[id];
+
+        if (!options.paramsInBody) {
+            url = qq.obj2url(params, endpoint);
+        }
+        else {
+            qq.obj2Inputs(params, form);
+        }
+
+        form.setAttribute('action', url);
+        form.setAttribute('target', iframe.name);
+        form.style.display = 'none';
+        document.body.appendChild(form);
+
+        return form;
+    }
+
+
+    api = {
+        add: function(fileInput) {
+            fileInput.setAttribute('name', options.inputName);
+
+            var id = inputs.push(fileInput) - 1;
+            uuids[id] = qq.getUniqueId();
+
+            // remove file input from DOM
+            if (fileInput.parentNode){
+                qq(fileInput).remove();
+            }
+
+            return id;
+        },
+        getName: function(id) {
+            /*jslint regexp: true*/
+
+            // get input value and remove path to normalize
+            return inputs[id].value.replace(/.*(\/|\\)/, "");
+        },
+        isValid: function(id) {
+            return inputs[id] !== undefined;
+        },
+        reset: function() {
+            qq.UploadHandler.prototype.reset.apply(this, arguments);
+            inputs = [];
+            uuids = [];
+            detachLoadEvents = {};
+        },
+        getUuid: function(id) {
+            return uuids[id];
+        },
+        cancel: function(id) {
+            options.onCancel(id, this.getName(id));
+
+            delete inputs[id];
+            delete uuids[id];
+            delete detachLoadEvents[id];
+
+            if (options.cors.expected) {
+                clearTimeout(postMessageCallbackTimers[id]);
+                delete postMessageCallbackTimers[id];
+                corsMessageReceiver.stopReceivingMessages(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', 'java' + String.fromCharCode(115) + 'cript:false;'); //deal with "JSLint: javascript URL" warning, which apparently cannot be turned off
+
+                qq(iframe).remove();
+            }
+        },
+        upload: function(id){
+            var input = inputs[id],
+                fileName = api.getName(id),
+                iframe = createIframe(id),
+                form;
+
+            if (!input){
+                throw new Error('file with passed id was not added, or already uploaded or cancelled');
+            }
+
+            options.onUpload(id, this.getName(id));
+
+            form = createForm(id, iframe);
+            form.appendChild(input);
+
+            attachLoadEvent(iframe, function(responseFromMessage){
+                log('iframe loaded');
+
+                var response = responseFromMessage ? responseFromMessage : getIframeContentJson(iframe);
+
+                detachLoadEvent(id);
+
+                //we can't remove an iframe if the iframe doesn't belong to the same domain
+                if (!options.cors.expected) {
+                    qq(iframe).remove();
+                }
+
+                if (!response.success) {
+                    if (options.onAutoRetry(id, fileName, response)) {
+                        return;
+                    }
+                }
+                options.onComplete(id, fileName, response);
+                uploadComplete(id);
+            });
+
+            log('Sending upload request for ' + id);
+            form.submit();
+            qq(form).remove();
+
+            return id;
+        }
+    };
+
+    return api;
+};
+/*globals qq, File, XMLHttpRequest, FormData, Blob*/
+qq.UploadHandlerXhr = function(o, uploadCompleteCallback, logCallback) {
+    "use strict";
+    
+    var options = o,
+        uploadComplete = uploadCompleteCallback,
+        log = logCallback,
+        fileState = [],
+        cookieItemDelimiter = "|",
+        chunkFiles = options.chunking.enabled && qq.isFileChunkingSupported(),
+        resumeEnabled = options.resume.enabled && chunkFiles && qq.areCookiesEnabled(),
+        resumeId = getResumeId(),
+        multipart = options.forceMultipart || options.paramsInBody,
+        api;
+
+
+     function addChunkingSpecificParams(id, params, chunkData) {
+        var size = api.getSize(id),
+            name = api.getName(id);
+
+        params[options.chunking.paramNames.partIndex] = chunkData.part;
+        params[options.chunking.paramNames.partByteOffset] = chunkData.start;
+        params[options.chunking.paramNames.chunkSize] = chunkData.size;
+        params[options.chunking.paramNames.totalParts] = chunkData.count;
+        params[options.totalFileSizeParamName] = size;
+
+        /**
+         * When a Blob is sent in a multipart request, the filename value in the content-disposition header is either "blob"
+         * or an empty string.  So, we will need to include the actual file name as a param in this case.
+         */
+        if (multipart) {
+            params[options.chunking.paramNames.filename] = name;
+        }
+    }
+
+    function addResumeSpecificParams(params) {
+        params[options.resume.paramNames.resuming] = true;
+    }
+
+     function getChunk(fileOrBlob, startByte, endByte) {
+        if (fileOrBlob.slice) {
+            return fileOrBlob.slice(startByte, endByte);
+        }
+        else if (fileOrBlob.mozSlice) {
+            return fileOrBlob.mozSlice(startByte, endByte);
+        }
+        else if (fileOrBlob.webkitSlice) {
+            return fileOrBlob.webkitSlice(startByte, endByte);
+        }
+    }
+
+    function getChunkData(id, chunkIndex) {
+        var chunkSize = options.chunking.partSize,
+            fileSize = api.getSize(id),
+            fileOrBlob = fileState[id].file || fileState[id].blobData.blob,
+            startBytes = chunkSize * chunkIndex,
+            endBytes = startBytes+chunkSize >= fileSize ? fileSize : startBytes+chunkSize,
+            totalChunks = getTotalChunks(id);
+
+        return {
+            part: chunkIndex,
+            start: startBytes,
+            end: endBytes,
+            count: totalChunks,
+            blob: getChunk(fileOrBlob, startBytes, endBytes),
+            size: endBytes - startBytes
+        };
+    }
+
+    function getTotalChunks(id) {
+        var fileSize = api.getSize(id),
+            chunkSize = options.chunking.partSize;
+
+        return Math.ceil(fileSize / chunkSize);
+    }
+
+    function createXhr(id) {
+        var xhr = new XMLHttpRequest();
+
+        fileState[id].xhr = xhr;
+
+        return xhr;
+    }
+
+    function setParamsAndGetEntityToSend(params, xhr, fileOrBlob, id) {
+        var formData = new FormData(),
+            method = options.demoMode ? "GET" : "POST",
+            endpoint = options.endpointStore.getEndpoint(id),
+            url = endpoint,
+            name = api.getName(id),
+            size = api.getSize(id),
+            blobData = fileState[id].blobData;
+
+        params[options.uuidParamName] = fileState[id].uuid;
+
+        if (multipart) {
+            params[options.totalFileSizeParamName] = size;
+
+            if (blobData) {
+                /**
+                 * When a Blob is sent in a multipart request, the filename value in the content-disposition header is either "blob"
+                 * or an empty string.  So, we will need to include the actual file name as a param in this case.
+                 */
+                params[options.blobs.paramNames.name] = blobData.name;
+            }
+        }
+
+        //build query string
+        if (!options.paramsInBody) {
+            if (!multipart) {
+                params[options.inputName] = name;
+            }
+            url = qq.obj2url(params, endpoint);
+        }
+
+        xhr.open(method, url, true);
+
+        if (options.cors.expected && options.cors.sendCredentials) {
+            xhr.withCredentials = true;
+        }
+
+        if (multipart) {
+            if (options.paramsInBody) {
+                qq.obj2FormData(params, formData);
+            }
+
+            formData.append(options.inputName, fileOrBlob);
+            return formData;
+        }
+
+        return fileOrBlob;
+    }
+
+    function setHeaders(id, xhr) {
+        var extraHeaders = options.customHeaders,
+            fileOrBlob = fileState[id].file || fileState[id].blobData.blob;
+
+        xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
+        xhr.setRequestHeader("Cache-Control", "no-cache");
+
+        if (!multipart) {
+            xhr.setRequestHeader("Content-Type", "application/octet-stream");
+            //NOTE: return mime type in xhr works on chrome 16.0.9 firefox 11.0a2
+            xhr.setRequestHeader("X-Mime-Type", fileOrBlob.type);
+        }
+
+        qq.each(extraHeaders, function(name, val) {
+            xhr.setRequestHeader(name, val);
+        });
+    }
+
+    function handleCompletedItem(id, response, xhr) {
+        var name = api.getName(id),
+            size = api.getSize(id);
+
+        fileState[id].attemptingResume = false;
+
+        options.onProgress(id, name, size, size);
+
+        options.onComplete(id, name, response, xhr);
+        delete fileState[id].xhr;
+        uploadComplete(id);
+    }
+
+    function uploadNextChunk(id) {
+        var chunkIdx = fileState[id].remainingChunkIdxs[0],
+            chunkData = getChunkData(id, chunkIdx),
+            xhr = createXhr(id),
+            size = api.getSize(id),
+            name = api.getName(id),
+            toSend, params;
+
+        if (fileState[id].loaded === undefined) {
+            fileState[id].loaded = 0;
+        }
+
+        if (resumeEnabled && fileState[id].file) {
+            persistChunkData(id, chunkData);
+        }
+
+        xhr.onreadystatechange = getReadyStateChangeHandler(id, xhr);
+
+        xhr.upload.onprogress = function(e) {
+            if (e.lengthComputable) {
+                var totalLoaded = e.loaded + fileState[id].loaded,
+                    estTotalRequestsSize = calcAllRequestsSizeForChunkedUpload(id, chunkIdx, e.total);
+
+                options.onProgress(id, name, totalLoaded, estTotalRequestsSize);
+            }
+        };
+
+        options.onUploadChunk(id, name, getChunkDataForCallback(chunkData));
+
+        params = options.paramsStore.getParams(id);
+        addChunkingSpecificParams(id, params, chunkData);
+
+        if (fileState[id].attemptingResume) {
+            addResumeSpecificParams(params);
+        }
+
+        toSend = setParamsAndGetEntityToSend(params, xhr, chunkData.blob, id);
+        setHeaders(id, xhr);
+
+        log('Sending chunked upload request for item ' + id + ": bytes " + (chunkData.start+1) + "-" + chunkData.end + " of " + size);
+        xhr.send(toSend);
+    }
+
+    function calcAllRequestsSizeForChunkedUpload(id, chunkIdx, requestSize) {
+        var chunkData = getChunkData(id, chunkIdx),
+            blobSize = chunkData.size,
+            overhead = requestSize - blobSize,
+            size = api.getSize(id),
+            chunkCount = chunkData.count,
+            initialRequestOverhead = fileState[id].initialRequestOverhead,
+            overheadDiff = overhead - initialRequestOverhead;
+
+        fileState[id].lastRequestOverhead = overhead;
+
+        if (chunkIdx === 0) {
+            fileState[id].lastChunkIdxProgress = 0;
+            fileState[id].initialRequestOverhead = overhead;
+            fileState[id].estTotalRequestsSize = size + (chunkCount * overhead);
+        }
+        else if (fileState[id].lastChunkIdxProgress !== chunkIdx) {
+            fileState[id].lastChunkIdxProgress = chunkIdx;
+            fileState[id].estTotalRequestsSize += overheadDiff;
+        }
+
+        return fileState[id].estTotalRequestsSize;
+    }
+
+    function getLastRequestOverhead(id) {
+        if (multipart) {
+            return fileState[id].lastRequestOverhead;
+        }
+        else {
+            return 0;
+        }
+    }
+
+    function handleSuccessfullyCompletedChunk(id, response, xhr) {
+        var chunkIdx = fileState[id].remainingChunkIdxs.shift(),
+            chunkData = getChunkData(id, chunkIdx);
+
+        fileState[id].attemptingResume = false;
+        fileState[id].loaded += chunkData.size + getLastRequestOverhead(id);
+
+        if (fileState[id].remainingChunkIdxs.length > 0) {
+            uploadNextChunk(id);
+        }
+        else {
+            if (resumeEnabled) {
+                deletePersistedChunkData(id);
+            }
+
+            handleCompletedItem(id, response, xhr);
+        }
+    }
+
+    function isErrorResponse(xhr, response) {
+        return xhr.status !== 200 || !response.success || response.reset;
+    }
+
+    function parseResponse(xhr) {
+        var response;
+
+        try {
+            response = qq.parseJson(xhr.responseText);
+        }
+        catch(error) {
+            log('Error when attempting to parse xhr response text (' + error + ')', 'error');
+            response = {};
+        }
+
+        return response;
+    }
+
+    function handleResetResponse(id) {
+        log('Server has ordered chunking effort to be restarted on next attempt for item ID ' + id, 'error');
+
+        if (resumeEnabled) {
+            deletePersistedChunkData(id);
+            fileState[id].attemptingResume = false;
+        }
+
+        fileState[id].remainingChunkIdxs = [];
+        delete fileState[id].loaded;
+        delete fileState[id].estTotalRequestsSize;
+        delete fileState[id].initialRequestOverhead;
+    }
+
+    function handleResetResponseOnResumeAttempt(id) {
+        fileState[id].attemptingResume = false;
+        log("Server has declared that it cannot handle resume for item ID " + id + " - starting from the first chunk", 'error');
+        handleResetResponse(id);
+        api.upload(id, true);
+    }
+
+    function handleNonResetErrorResponse(id, response, xhr) {
+        var name = api.getName(id);
+
+        if (options.onAutoRetry(id, name, response, xhr)) {
+            return;
+        }
+        else {
+            handleCompletedItem(id, response, xhr);
+        }
+    }
+
+    function onComplete(id, xhr) {
+        var response;
+
+        // the request was aborted/cancelled
+        if (!fileState[id]) {
+            return;
+        }
+
+        log("xhr - server response received for " + id);
+        log("responseText = " + xhr.responseText);
+        response = parseResponse(xhr);
+
+        if (isErrorResponse(xhr, response)) {
+            if (response.reset) {
+                handleResetResponse(id);
+            }
+
+            if (fileState[id].attemptingResume && response.reset) {
+                handleResetResponseOnResumeAttempt(id);
+            }
+            else {
+                handleNonResetErrorResponse(id, response, xhr);
+            }
+        }
+        else if (chunkFiles) {
+            handleSuccessfullyCompletedChunk(id, response, xhr);
+        }
+        else {
+            handleCompletedItem(id, response, xhr);
+        }
+    }
+
+    function getChunkDataForCallback(chunkData) {
+        return {
+            partIndex: chunkData.part,
+            startByte: chunkData.start + 1,
+            endByte: chunkData.end,
+            totalParts: chunkData.count
+        };
+    }
+
+    function getReadyStateChangeHandler(id, xhr) {
+        return function() {
+            if (xhr.readyState === 4) {
+                onComplete(id, xhr);
+            }
+        };
+    }
+
+    function persistChunkData(id, chunkData) {
+        var fileUuid = api.getUuid(id),
+            lastByteSent = fileState[id].loaded,
+            initialRequestOverhead = fileState[id].initialRequestOverhead,
+            estTotalRequestsSize = fileState[id].estTotalRequestsSize,
+            cookieName = getChunkDataCookieName(id),
+            cookieValue = fileUuid +
+                cookieItemDelimiter + chunkData.part +
+                cookieItemDelimiter + lastByteSent +
+                cookieItemDelimiter + initialRequestOverhead +
+                cookieItemDelimiter + estTotalRequestsSize,
+            cookieExpDays = options.resume.cookiesExpireIn;
+
+        qq.setCookie(cookieName, cookieValue, cookieExpDays);
+    }
+
+    function deletePersistedChunkData(id) {
+        if (fileState[id].file) {
+            var cookieName = getChunkDataCookieName(id);
+            qq.deleteCookie(cookieName);
+        }
+    }
+
+    function getPersistedChunkData(id) {
+        var chunkCookieValue = qq.getCookie(getChunkDataCookieName(id)),
+            filename = api.getName(id),
+            sections, uuid, partIndex, lastByteSent, initialRequestOverhead, estTotalRequestsSize;
+
+        if (chunkCookieValue) {
+            sections = chunkCookieValue.split(cookieItemDelimiter);
+
+            if (sections.length === 5) {
+                uuid = sections[0];
+                partIndex = parseInt(sections[1], 10);
+                lastByteSent = parseInt(sections[2], 10);
+                initialRequestOverhead = parseInt(sections[3], 10);
+                estTotalRequestsSize = parseInt(sections[4], 10);
+
+                return {
+                    uuid: uuid,
+                    part: partIndex,
+                    lastByteSent: lastByteSent,
+                    initialRequestOverhead: initialRequestOverhead,
+                    estTotalRequestsSize: estTotalRequestsSize
+                };
+            }
+            else {
+                log('Ignoring previously stored resume/chunk cookie for ' + filename + " - old cookie format", "warn");
+            }
+        }
+    }
+
+    function getChunkDataCookieName(id) {
+        var filename = api.getName(id),
+            fileSize = api.getSize(id),
+            maxChunkSize = options.chunking.partSize,
+            cookieName;
+
+        cookieName = "qqfilechunk" + cookieItemDelimiter + encodeURIComponent(filename) + cookieItemDelimiter + fileSize + cookieItemDelimiter + maxChunkSize;
+
+        if (resumeId !== undefined) {
+            cookieName += cookieItemDelimiter + resumeId;
+        }
+
+        return cookieName;
+    }
+
+    function getResumeId() {
+        if (options.resume.id !== null &&
+            options.resume.id !== undefined &&
+            !qq.isFunction(options.resume.id) &&
+            !qq.isObject(options.resume.id)) {
+
+            return options.resume.id;
+        }
+    }
+
+    function handleFileChunkingUpload(id, retry) {
+        var name = api.getName(id),
+            firstChunkIndex = 0,
+            persistedChunkInfoForResume, firstChunkDataForResume, currentChunkIndex;
+
+        if (!fileState[id].remainingChunkIdxs || fileState[id].remainingChunkIdxs.length === 0) {
+            fileState[id].remainingChunkIdxs = [];
+
+            if (resumeEnabled && !retry && fileState[id].file) {
+                persistedChunkInfoForResume = getPersistedChunkData(id);
+                if (persistedChunkInfoForResume) {
+                    firstChunkDataForResume = getChunkData(id, persistedChunkInfoForResume.part);
+                    if (options.onResume(id, name, getChunkDataForCallback(firstChunkDataForResume)) !== false) {
+                        firstChunkIndex = persistedChunkInfoForResume.part;
+                        fileState[id].uuid = persistedChunkInfoForResume.uuid;
+                        fileState[id].loaded = persistedChunkInfoForResume.lastByteSent;
+                        fileState[id].estTotalRequestsSize = persistedChunkInfoForResume.estTotalRequestsSize;
+                        fileState[id].initialRequestOverhead = persistedChunkInfoForResume.initialRequestOverhead;
+                        fileState[id].attemptingResume = true;
+                        log('Resuming ' + name + " at partition index " + firstChunkIndex);
+                    }
+                }
+            }
+
+            for (currentChunkIndex = getTotalChunks(id)-1; currentChunkIndex >= firstChunkIndex; currentChunkIndex-=1) {
+                fileState[id].remainingChunkIdxs.unshift(currentChunkIndex);
+            }
+        }
+
+        uploadNextChunk(id);
+    }
+
+    function handleStandardFileUpload(id) {
+        var fileOrBlob = fileState[id].file || fileState[id].blobData.blob,
+            name = api.getName(id),
+            xhr, params, toSend;
+
+        fileState[id].loaded = 0;
+
+        xhr = createXhr(id);
+
+        xhr.upload.onprogress = function(e){
+            if (e.lengthComputable){
+                fileState[id].loaded = e.loaded;
+                options.onProgress(id, name, e.loaded, e.total);
+            }
+        };
+
+        xhr.onreadystatechange = getReadyStateChangeHandler(id, xhr);
+
+        params = options.paramsStore.getParams(id);
+        toSend = setParamsAndGetEntityToSend(params, xhr, fileOrBlob, id);
+        setHeaders(id, xhr);
+
+        log('Sending upload request for ' + id);
+        xhr.send(toSend);
+    }
+
+
+    api = {
+        /**
+         * Adds File or Blob to the queue
+         * Returns id to use with upload, cancel
+         **/
+        add: function(fileOrBlobData){
+            var id;
+
+            if (fileOrBlobData instanceof File) {
+                id = fileState.push({file: fileOrBlobData}) - 1;
+            }
+            else if (fileOrBlobData.blob instanceof Blob) {
+                id = fileState.push({blobData: fileOrBlobData}) - 1;
+            }
+            else {
+                throw new Error('Passed obj in not a File or BlobData (in qq.UploadHandlerXhr)');
+            }
+
+            fileState[id].uuid = qq.getUniqueId();
+            return id;
+        },
+        getName: function(id){
+            var file = fileState[id].file,
+                blobData = fileState[id].blobData;
+
+            if (file) {
+                // fix missing name in Safari 4
+                //NOTE: fixed missing name firefox 11.0a2 file.fileName is actually undefined
+                return (file.fileName !== null && file.fileName !== undefined) ? file.fileName : file.name;
+            }
+            else {
+                return blobData.name;
+            }
+        },
+        getSize: function(id){
+            /*jshint eqnull: true*/
+            var fileOrBlob = fileState[id].file || fileState[id].blobData.blob;
+
+            if (qq.isFileOrInput(fileOrBlob)) {
+                return fileOrBlob.fileSize != null ? fileOrBlob.fileSize : fileOrBlob.size;
+            }
+            else {
+                return fileOrBlob.size;
+            }
+        },
+        getFile: function(id) {
+            if (fileState[id]) {
+                return fileState[id].file || fileState[id].blobData.blob;
+            }
+        },
+        /**
+         * Returns uploaded bytes for file identified by id
+         */
+        getLoaded: function(id){
+            return fileState[id].loaded || 0;
+        },
+        isValid: function(id) {
+            return fileState[id] !== undefined;
+        },
+        reset: function() {
+            fileState = [];
+        },
+        getUuid: function(id) {
+            return fileState[id].uuid;
+        },
+        /**
+         * Sends the file identified by id to the server
+         */
+        upload: function(id, retry){
+            var name = this.getName(id);
+
+            options.onUpload(id, name);
+
+            if (chunkFiles) {
+                handleFileChunkingUpload(id, retry);
+            }
+            else {
+                handleStandardFileUpload(id);
+            }
+        },
+        cancel: function(id){
+            var xhr = fileState[id].xhr;
+
+            options.onCancel(id, this.getName(id));
+
+            if (xhr) {
+                xhr.onreadystatechange = null;
+                xhr.abort();
+            }
+
+            if (resumeEnabled) {
+                deletePersistedChunkData(id);
+            }
+
+            delete fileState[id];
+        },
+        getResumableFilesData: function() {
+            var matchingCookieNames = [],
+                resumableFilesData = [];
+
+            if (chunkFiles && resumeEnabled) {
+                if (resumeId === undefined) {
+                    matchingCookieNames = qq.getCookieNames(new RegExp("^qqfilechunk\\" + cookieItemDelimiter + ".+\\" +
+                        cookieItemDelimiter + "\\d+\\" + cookieItemDelimiter + options.chunking.partSize + "="));
+                }
+                else {
+                    matchingCookieNames = qq.getCookieNames(new RegExp("^qqfilechunk\\" + cookieItemDelimiter + ".+\\" +
+                        cookieItemDelimiter + "\\d+\\" + cookieItemDelimiter + options.chunking.partSize + "\\" +
+                        cookieItemDelimiter + resumeId + "="));
+                }
+
+                qq.each(matchingCookieNames, function(idx, cookieName) {
+                    var cookiesNameParts = cookieName.split(cookieItemDelimiter);
+                    var cookieValueParts = qq.getCookie(cookieName).split(cookieItemDelimiter);
+
+                    resumableFilesData.push({
+                        name: decodeURIComponent(cookiesNameParts[1]),
+                        size: cookiesNameParts[2],
+                        uuid: cookieValueParts[0],
+                        partIdx: cookieValueParts[1]
+                    });
+                });
+
+                return resumableFilesData;
+            }
+            return [];
+        }
+    };
+
+    return api;
+};