1247 lines
39 KiB
JavaScript
1247 lines
39 KiB
JavaScript
/**
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* http://github.com/valums/file-uploader
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*
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* Multiple file upload component with progress-bar, drag-and-drop.
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* © 2010 Andrew Valums ( andrew(at)valums.com )
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*
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* Licensed under GNU GPL 2 or later, see license.txt.
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*/
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//
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// Helper functions
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//
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var qq = qq || {};
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/**
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* Adds all missing properties from second obj to first obj
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*/
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qq.extend = function(first, second){
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for (var prop in second){
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first[prop] = second[prop];
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}
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};
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/**
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* Searches for a given element in the array, returns -1 if it is not present.
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* @param {Number} [from] The index at which to begin the search
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*/
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qq.indexOf = function(arr, elt, from){
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if (arr.indexOf) return arr.indexOf(elt, from);
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from = from || 0;
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var len = arr.length;
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if (from < 0) from += len;
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for (; from < len; from++){
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if (from in arr && arr[from] === elt){
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return from;
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}
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}
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return -1;
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};
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qq.getUniqueId = (function(){
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var id = 0;
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return function(){ return id++; };
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})();
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//
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// Events
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qq.attach = function(element, type, fn){
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if (element.addEventListener){
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element.addEventListener(type, fn, false);
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} else if (element.attachEvent){
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element.attachEvent('on' + type, fn);
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}
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};
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qq.detach = function(element, type, fn){
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if (element.removeEventListener){
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element.removeEventListener(type, fn, false);
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} else if (element.attachEvent){
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element.detachEvent('on' + type, fn);
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}
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};
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qq.preventDefault = function(e){
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if (e.preventDefault){
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e.preventDefault();
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} else{
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e.returnValue = false;
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}
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};
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//
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// Node manipulations
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/**
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* Insert node a before node b.
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*/
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qq.insertBefore = function(a, b){
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b.parentNode.insertBefore(a, b);
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};
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qq.remove = function(element){
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element.parentNode.removeChild(element);
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};
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qq.contains = function(parent, descendant){
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// compareposition returns false in this case
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if (parent == descendant) return true;
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if (parent.contains){
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return parent.contains(descendant);
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} else {
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return !!(descendant.compareDocumentPosition(parent) & 8);
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}
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};
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/**
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* Creates and returns element from html string
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* Uses innerHTML to create an element
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*/
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qq.toElement = (function(){
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var div = document.createElement('div');
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return function(html){
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div.innerHTML = html;
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var element = div.firstChild;
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div.removeChild(element);
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return element;
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};
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})();
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//
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// Node properties and attributes
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/**
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* Sets styles for an element.
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* Fixes opacity in IE6-8.
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*/
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qq.css = function(element, styles){
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if (styles.opacity != null){
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if (typeof element.style.opacity != 'string' && typeof(element.filters) != 'undefined'){
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styles.filter = 'alpha(opacity=' + Math.round(100 * styles.opacity) + ')';
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}
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}
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qq.extend(element.style, styles);
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};
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qq.hasClass = function(element, name){
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var re = new RegExp('(^| )' + name + '( |$)');
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return re.test(element.className);
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};
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qq.addClass = function(element, name){
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if (!qq.hasClass(element, name)){
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element.className += ' ' + name;
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}
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};
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qq.removeClass = function(element, name){
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var re = new RegExp('(^| )' + name + '( |$)');
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element.className = element.className.replace(re, ' ').replace(/^\s+|\s+$/g, "");
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};
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qq.setText = function(element, text){
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element.innerText = text;
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element.textContent = text;
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};
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//
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// Selecting elements
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qq.children = function(element){
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var children = [],
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child = element.firstChild;
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while (child){
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if (child.nodeType == 1){
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children.push(child);
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}
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child = child.nextSibling;
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}
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return children;
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};
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qq.getByClass = function(element, className){
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if (element.querySelectorAll){
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return element.querySelectorAll('.' + className);
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}
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var result = [];
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var candidates = element.getElementsByTagName("*");
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var len = candidates.length;
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for (var i = 0; i < len; i++){
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if (qq.hasClass(candidates[i], className)){
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result.push(candidates[i]);
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}
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}
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return result;
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};
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/**
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* obj2url() takes a json-object as argument and generates
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* a querystring. pretty much like jQuery.param()
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*
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* how to use:
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*
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* `qq.obj2url({a:'b',c:'d'},'http://any.url/upload?otherParam=value');`
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*
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* will result in:
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*
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* `http://any.url/upload?otherParam=value&a=b&c=d`
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*
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* @param Object JSON-Object
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* @param String current querystring-part
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* @return String encoded querystring
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*/
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qq.obj2url = function(obj, temp, prefixDone){
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var uristrings = [],
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prefix = '&',
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add = function(nextObj, i){
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var nextTemp = temp
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? (/\[\]$/.test(temp)) // prevent double-encoding
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? temp
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: temp+'['+i+']'
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: i;
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if ((nextTemp != 'undefined') && (i != 'undefined')) {
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uristrings.push(
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(typeof nextObj === 'object')
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? qq.obj2url(nextObj, nextTemp, true)
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: (Object.prototype.toString.call(nextObj) === '[object Function]')
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? encodeURIComponent(nextTemp) + '=' + encodeURIComponent(nextObj())
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: encodeURIComponent(nextTemp) + '=' + encodeURIComponent(nextObj)
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);
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}
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};
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if (!prefixDone && temp) {
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prefix = (/\?/.test(temp)) ? (/\?$/.test(temp)) ? '' : '&' : '?';
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uristrings.push(temp);
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uristrings.push(qq.obj2url(obj));
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} else if ((Object.prototype.toString.call(obj) === '[object Array]') && (typeof obj != 'undefined') ) {
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// we wont use a for-in-loop on an array (performance)
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for (var i = 0, len = obj.length; i < len; ++i){
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add(obj[i], i);
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}
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} else if ((typeof obj != 'undefined') && (obj !== null) && (typeof obj === "object")){
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// for anything else but a scalar, we will use for-in-loop
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for (var i in obj){
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add(obj[i], i);
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}
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} else {
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uristrings.push(encodeURIComponent(temp) + '=' + encodeURIComponent(obj));
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}
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return uristrings.join(prefix)
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.replace(/^&/, '')
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.replace(/%20/g, '+');
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};
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//
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//
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// Uploader Classes
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//
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//
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var qq = qq || {};
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/**
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* Creates upload button, validates upload, but doesn't create file list or dd.
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*/
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qq.FileUploaderBasic = function(o){
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this._options = {
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// set to true to see the server response
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debug: false,
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action: '/server/upload',
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params: {},
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button: null,
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multiple: true,
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maxConnections: 3,
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// validation
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allowedExtensions: [],
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sizeLimit: 0,
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minSizeLimit: 0,
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// events
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// return false to cancel submit
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onSubmit: function(id, fileName){},
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onProgress: function(id, fileName, loaded, total){},
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onComplete: function(id, fileName, responseJSON){},
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onCancel: function(id, fileName){},
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// messages
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messages: {
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typeError: "{file} has invalid extension. Only {extensions} are allowed.",
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sizeError: "{file} is too large, maximum file size is {sizeLimit}.",
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minSizeError: "{file} is too small, minimum file size is {minSizeLimit}.",
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emptyError: "{file} is empty, please select files again without it.",
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onLeave: "The files are being uploaded, if you leave now the upload will be cancelled."
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},
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showMessage: function(message){
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alert(message);
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}
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};
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qq.extend(this._options, o);
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// number of files being uploaded
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this._filesInProgress = 0;
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this._handler = this._createUploadHandler();
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if (this._options.button){
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this._button = this._createUploadButton(this._options.button);
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}
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this._preventLeaveInProgress();
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};
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qq.FileUploaderBasic.prototype = {
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setParams: function(params){
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this._options.params = params;
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},
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getInProgress: function(){
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return this._filesInProgress;
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},
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_createUploadButton: function(element){
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var self = this;
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return new qq.UploadButton({
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element: element,
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multiple: this._options.multiple && qq.UploadHandlerXhr.isSupported(),
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onChange: function(input){
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self._onInputChange(input);
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}
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});
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},
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_createUploadHandler: function(){
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var self = this,
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handlerClass;
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if(qq.UploadHandlerXhr.isSupported()){
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handlerClass = 'UploadHandlerXhr';
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} else {
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handlerClass = 'UploadHandlerForm';
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}
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var handler = new qq[handlerClass]({
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debug: this._options.debug,
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action: this._options.action,
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maxConnections: this._options.maxConnections,
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onProgress: function(id, fileName, loaded, total){
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self._onProgress(id, fileName, loaded, total);
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self._options.onProgress(id, fileName, loaded, total);
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},
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onComplete: function(id, fileName, result){
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self._onComplete(id, fileName, result);
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self._options.onComplete(id, fileName, result);
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},
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onCancel: function(id, fileName){
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self._onCancel(id, fileName);
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self._options.onCancel(id, fileName);
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}
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});
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return handler;
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},
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_preventLeaveInProgress: function(){
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var self = this;
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qq.attach(window, 'beforeunload', function(e){
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if (!self._filesInProgress){return;}
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var e = e || window.event;
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// for ie, ff
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e.returnValue = self._options.messages.onLeave;
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// for webkit
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return self._options.messages.onLeave;
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});
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},
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_onSubmit: function(id, fileName){
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this._filesInProgress++;
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},
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_onProgress: function(id, fileName, loaded, total){
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},
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_onComplete: function(id, fileName, result){
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this._filesInProgress--;
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if (result.error){
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this._options.showMessage(result.error);
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}
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},
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_onCancel: function(id, fileName){
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this._filesInProgress--;
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},
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_onInputChange: function(input){
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if (this._handler instanceof qq.UploadHandlerXhr){
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this._uploadFileList(input.files);
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} else {
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if (this._validateFile(input)){
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this._uploadFile(input);
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}
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}
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this._button.reset();
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},
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_uploadFileList: function(files){
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for (var i=0; i<files.length; i++){
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if ( !this._validateFile(files[i])){
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return;
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}
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}
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for (var i=0; i<files.length; i++){
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this._uploadFile(files[i]);
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}
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},
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_uploadFile: function(fileContainer){
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var id = this._handler.add(fileContainer);
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var fileName = this._handler.getName(id);
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if (this._options.onSubmit(id, fileName) !== false){
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this._onSubmit(id, fileName);
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this._handler.upload(id, this._options.params);
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}
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},
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_validateFile: function(file){
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var name, size;
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if (file.value){
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// it is a file input
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// get input value and remove path to normalize
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name = file.value.replace(/.*(\/|\\)/, "");
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} else {
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// fix missing properties in Safari
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name = file.fileName != null ? file.fileName : file.name;
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size = file.fileSize != null ? file.fileSize : file.size;
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}
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if (! this._isAllowedExtension(name)){
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this._error('typeError', name);
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return false;
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} else if (size === 0){
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this._error('emptyError', name);
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return false;
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} else if (size && this._options.sizeLimit && size > this._options.sizeLimit){
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this._error('sizeError', name);
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return false;
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} else if (size && size < this._options.minSizeLimit){
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this._error('minSizeError', name);
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return false;
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}
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return true;
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},
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_error: function(code, fileName){
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var message = this._options.messages[code];
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function r(name, replacement){ message = message.replace(name, replacement); }
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r('{file}', this._formatFileName(fileName));
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r('{extensions}', this._options.allowedExtensions.join(', '));
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r('{sizeLimit}', this._formatSize(this._options.sizeLimit));
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r('{minSizeLimit}', this._formatSize(this._options.minSizeLimit));
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this._options.showMessage(message);
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},
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_formatFileName: function(name){
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if (name.length > 33){
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name = name.slice(0, 19) + '...' + name.slice(-13);
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}
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return name;
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},
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_isAllowedExtension: function(fileName){
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var ext = (-1 !== fileName.indexOf('.')) ? fileName.replace(/.*[.]/, '').toLowerCase() : '';
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var allowed = this._options.allowedExtensions;
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if (!allowed.length){return true;}
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for (var i=0; i<allowed.length; i++){
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if (allowed[i].toLowerCase() == ext){ return true;}
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}
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return false;
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},
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_formatSize: function(bytes){
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var i = -1;
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do {
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bytes = bytes / 1024;
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i++;
|
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} while (bytes > 99);
|
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|
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return Math.max(bytes, 0.1).toFixed(1) + ['kB', 'MB', 'GB', 'TB', 'PB', 'EB'][i];
|
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}
|
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};
|
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|
|
|
|
/**
|
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* Class that creates upload widget with drag-and-drop and file list
|
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* @inherits qq.FileUploaderBasic
|
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*/
|
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qq.FileUploader = function(o){
|
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// call parent constructor
|
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qq.FileUploaderBasic.apply(this, arguments);
|
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|
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// additional options
|
|
qq.extend(this._options, {
|
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element: null,
|
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// if set, will be used instead of qq-upload-list in template
|
|
listElement: null,
|
|
|
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template: '<div class="qq-uploader">' +
|
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'<div class="qq-upload-drop-area"><span>Drop files here to upload</span></div>' +
|
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'<div class="qq-upload-button">Upload a file</div>' +
|
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'<ul class="qq-upload-list"></ul>' +
|
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'</div>',
|
|
|
|
// template for one item in file list
|
|
fileTemplate: '<li>' +
|
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'<span class="qq-upload-file"></span>' +
|
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'<span class="qq-upload-spinner"></span>' +
|
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'<span class="qq-upload-size"></span>' +
|
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'<a class="qq-upload-cancel" href="#">Cancel</a>' +
|
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'<span class="qq-upload-failed-text">Failed</span>' +
|
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'</li>',
|
|
|
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classes: {
|
|
// used to get elements from templates
|
|
button: 'qq-upload-button',
|
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drop: 'qq-upload-drop-area',
|
|
dropActive: 'qq-upload-drop-area-active',
|
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list: 'qq-upload-list',
|
|
|
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file: 'qq-upload-file',
|
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spinner: 'qq-upload-spinner',
|
|
size: 'qq-upload-size',
|
|
cancel: 'qq-upload-cancel',
|
|
|
|
// added to list item when upload completes
|
|
// used in css to hide progress spinner
|
|
success: 'qq-upload-success',
|
|
fail: 'qq-upload-fail'
|
|
}
|
|
});
|
|
// overwrite options with user supplied
|
|
qq.extend(this._options, o);
|
|
|
|
this._element = this._options.element;
|
|
this._element.innerHTML = this._options.template;
|
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this._listElement = this._options.listElement || this._find(this._element, 'list');
|
|
|
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this._classes = this._options.classes;
|
|
|
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this._button = this._createUploadButton(this._find(this._element, 'button'));
|
|
|
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this._bindCancelEvent();
|
|
this._setupDragDrop();
|
|
};
|
|
|
|
// inherit from Basic Uploader
|
|
qq.extend(qq.FileUploader.prototype, qq.FileUploaderBasic.prototype);
|
|
|
|
qq.extend(qq.FileUploader.prototype, {
|
|
/**
|
|
* Gets one of the elements listed in this._options.classes
|
|
**/
|
|
_find: function(parent, type){
|
|
var element = qq.getByClass(parent, this._options.classes[type])[0];
|
|
if (!element){
|
|
throw new Error('element not found ' + type);
|
|
}
|
|
|
|
return element;
|
|
},
|
|
_setupDragDrop: function(){
|
|
var self = this,
|
|
dropArea = this._find(this._element, 'drop');
|
|
|
|
var dz = new qq.UploadDropZone({
|
|
element: dropArea,
|
|
onEnter: function(e){
|
|
qq.addClass(dropArea, self._classes.dropActive);
|
|
e.stopPropagation();
|
|
},
|
|
onLeave: function(e){
|
|
e.stopPropagation();
|
|
},
|
|
onLeaveNotDescendants: function(e){
|
|
qq.removeClass(dropArea, self._classes.dropActive);
|
|
},
|
|
onDrop: function(e){
|
|
dropArea.style.display = 'none';
|
|
qq.removeClass(dropArea, self._classes.dropActive);
|
|
self._uploadFileList(e.dataTransfer.files);
|
|
}
|
|
});
|
|
|
|
dropArea.style.display = 'none';
|
|
|
|
qq.attach(document, 'dragenter', function(e){
|
|
if (!dz._isValidFileDrag(e)) return;
|
|
|
|
dropArea.style.display = 'block';
|
|
});
|
|
qq.attach(document, 'dragleave', function(e){
|
|
if (!dz._isValidFileDrag(e)) return;
|
|
|
|
var relatedTarget = document.elementFromPoint(e.clientX, e.clientY);
|
|
// only fire when leaving document out
|
|
if ( ! relatedTarget || relatedTarget.nodeName == "HTML"){
|
|
dropArea.style.display = 'none';
|
|
}
|
|
});
|
|
},
|
|
_onSubmit: function(id, fileName){
|
|
qq.FileUploaderBasic.prototype._onSubmit.apply(this, arguments);
|
|
this._addToList(id, fileName);
|
|
},
|
|
_onProgress: function(id, fileName, loaded, total){
|
|
qq.FileUploaderBasic.prototype._onProgress.apply(this, arguments);
|
|
|
|
var item = this._getItemByFileId(id);
|
|
var size = this._find(item, 'size');
|
|
size.style.display = 'inline';
|
|
|
|
var text;
|
|
if (loaded != total){
|
|
text = Math.round(loaded / total * 100) + '% from ' + this._formatSize(total);
|
|
} else {
|
|
text = this._formatSize(total);
|
|
}
|
|
|
|
qq.setText(size, text);
|
|
},
|
|
_onComplete: function(id, fileName, result){
|
|
qq.FileUploaderBasic.prototype._onComplete.apply(this, arguments);
|
|
|
|
// mark completed
|
|
var item = this._getItemByFileId(id);
|
|
qq.remove(this._find(item, 'cancel'));
|
|
qq.remove(this._find(item, 'spinner'));
|
|
|
|
if (result.success){
|
|
qq.addClass(item, this._classes.success);
|
|
} else {
|
|
qq.addClass(item, this._classes.fail);
|
|
}
|
|
},
|
|
_addToList: function(id, fileName){
|
|
var item = qq.toElement(this._options.fileTemplate);
|
|
item.qqFileId = id;
|
|
|
|
var fileElement = this._find(item, 'file');
|
|
qq.setText(fileElement, this._formatFileName(fileName));
|
|
this._find(item, 'size').style.display = 'none';
|
|
|
|
this._listElement.appendChild(item);
|
|
},
|
|
_getItemByFileId: function(id){
|
|
var item = this._listElement.firstChild;
|
|
|
|
// there can't be txt nodes in dynamically created list
|
|
// and we can use nextSibling
|
|
while (item){
|
|
if (item.qqFileId == id) return item;
|
|
item = item.nextSibling;
|
|
}
|
|
},
|
|
/**
|
|
* delegate click event for cancel link
|
|
**/
|
|
_bindCancelEvent: function(){
|
|
var self = this,
|
|
list = this._listElement;
|
|
|
|
qq.attach(list, 'click', function(e){
|
|
e = e || window.event;
|
|
var target = e.target || e.srcElement;
|
|
|
|
if (qq.hasClass(target, self._classes.cancel)){
|
|
qq.preventDefault(e);
|
|
|
|
var item = target.parentNode;
|
|
self._handler.cancel(item.qqFileId);
|
|
qq.remove(item);
|
|
}
|
|
});
|
|
}
|
|
});
|
|
|
|
qq.UploadDropZone = function(o){
|
|
this._options = {
|
|
element: null,
|
|
onEnter: function(e){},
|
|
onLeave: function(e){},
|
|
// is not fired when leaving element by hovering descendants
|
|
onLeaveNotDescendants: function(e){},
|
|
onDrop: function(e){}
|
|
};
|
|
qq.extend(this._options, o);
|
|
|
|
this._element = this._options.element;
|
|
|
|
this._disableDropOutside();
|
|
this._attachEvents();
|
|
};
|
|
|
|
qq.UploadDropZone.prototype = {
|
|
_disableDropOutside: function(e){
|
|
// run only once for all instances
|
|
if (!qq.UploadDropZone.dropOutsideDisabled ){
|
|
|
|
qq.attach(document, 'dragover', function(e){
|
|
if (e.dataTransfer){
|
|
e.dataTransfer.dropEffect = 'none';
|
|
e.preventDefault();
|
|
}
|
|
});
|
|
|
|
qq.UploadDropZone.dropOutsideDisabled = true;
|
|
}
|
|
},
|
|
_attachEvents: function(){
|
|
var self = this;
|
|
|
|
qq.attach(self._element, 'dragover', function(e){
|
|
if (!self._isValidFileDrag(e)) return;
|
|
|
|
var effect = e.dataTransfer.effectAllowed;
|
|
if (effect == 'move' || effect == 'linkMove'){
|
|
e.dataTransfer.dropEffect = 'move'; // for FF (only move allowed)
|
|
} else {
|
|
e.dataTransfer.dropEffect = 'copy'; // for Chrome
|
|
}
|
|
|
|
e.stopPropagation();
|
|
e.preventDefault();
|
|
});
|
|
|
|
qq.attach(self._element, 'dragenter', function(e){
|
|
if (!self._isValidFileDrag(e)) return;
|
|
|
|
self._options.onEnter(e);
|
|
});
|
|
|
|
qq.attach(self._element, 'dragleave', function(e){
|
|
if (!self._isValidFileDrag(e)) return;
|
|
|
|
self._options.onLeave(e);
|
|
|
|
var relatedTarget = document.elementFromPoint(e.clientX, e.clientY);
|
|
// do not fire when moving a mouse over a descendant
|
|
if (qq.contains(this, relatedTarget)) return;
|
|
|
|
self._options.onLeaveNotDescendants(e);
|
|
});
|
|
|
|
qq.attach(self._element, 'drop', function(e){
|
|
if (!self._isValidFileDrag(e)) return;
|
|
|
|
e.preventDefault();
|
|
self._options.onDrop(e);
|
|
});
|
|
},
|
|
_isValidFileDrag: function(e){
|
|
var dt = e.dataTransfer,
|
|
// do not check dt.types.contains in webkit, because it crashes safari 4
|
|
isWebkit = navigator.userAgent.indexOf("AppleWebKit") > -1;
|
|
|
|
// dt.effectAllowed is none in Safari 5
|
|
// dt.types.contains check is for firefox
|
|
return dt && dt.effectAllowed != 'none' &&
|
|
(dt.files || (!isWebkit && dt.types.contains && dt.types.contains('Files')));
|
|
|
|
}
|
|
};
|
|
|
|
qq.UploadButton = function(o){
|
|
this._options = {
|
|
element: null,
|
|
// if set to true adds multiple attribute to file input
|
|
multiple: false,
|
|
// name attribute of file input
|
|
name: 'file',
|
|
onChange: function(input){},
|
|
hoverClass: 'qq-upload-button-hover',
|
|
focusClass: 'qq-upload-button-focus'
|
|
};
|
|
|
|
qq.extend(this._options, o);
|
|
|
|
this._element = this._options.element;
|
|
|
|
// make button suitable container for input
|
|
qq.css(this._element, {
|
|
position: 'relative',
|
|
overflow: 'hidden',
|
|
// Make sure browse button is in the right side
|
|
// in Internet Explorer
|
|
direction: 'ltr'
|
|
});
|
|
|
|
this._input = this._createInput();
|
|
};
|
|
|
|
qq.UploadButton.prototype = {
|
|
/* returns file input element */
|
|
getInput: function(){
|
|
return this._input;
|
|
},
|
|
/* cleans/recreates the file input */
|
|
reset: function(){
|
|
if (this._input.parentNode){
|
|
qq.remove(this._input);
|
|
}
|
|
|
|
qq.removeClass(this._element, this._options.focusClass);
|
|
this._input = this._createInput();
|
|
},
|
|
_createInput: function(){
|
|
var input = document.createElement("input");
|
|
|
|
if (this._options.multiple){
|
|
input.setAttribute("multiple", "multiple");
|
|
}
|
|
|
|
input.setAttribute("type", "file");
|
|
input.setAttribute("name", this._options.name);
|
|
|
|
qq.css(input, {
|
|
position: 'absolute',
|
|
// in Opera only 'browse' button
|
|
// is clickable and it is located at
|
|
// the right side of the input
|
|
right: 0,
|
|
top: 0,
|
|
fontFamily: 'Arial',
|
|
// 4 persons reported this, the max values that worked for them were 243, 236, 236, 118
|
|
fontSize: '118px',
|
|
margin: 0,
|
|
padding: 0,
|
|
cursor: 'pointer',
|
|
opacity: 0
|
|
});
|
|
|
|
this._element.appendChild(input);
|
|
|
|
var self = this;
|
|
qq.attach(input, 'change', function(){
|
|
self._options.onChange(input);
|
|
});
|
|
|
|
qq.attach(input, 'mouseover', function(){
|
|
qq.addClass(self._element, self._options.hoverClass);
|
|
});
|
|
qq.attach(input, 'mouseout', function(){
|
|
qq.removeClass(self._element, self._options.hoverClass);
|
|
});
|
|
qq.attach(input, 'focus', function(){
|
|
qq.addClass(self._element, self._options.focusClass);
|
|
});
|
|
qq.attach(input, 'blur', function(){
|
|
qq.removeClass(self._element, self._options.focusClass);
|
|
});
|
|
|
|
// IE and Opera, unfortunately have 2 tab stops on file input
|
|
// which is unacceptable in our case, disable keyboard access
|
|
if (window.attachEvent){
|
|
// it is IE or Opera
|
|
input.setAttribute('tabIndex', "-1");
|
|
}
|
|
|
|
return input;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Class for uploading files, uploading itself is handled by child classes
|
|
*/
|
|
qq.UploadHandlerAbstract = function(o){
|
|
this._options = {
|
|
debug: false,
|
|
action: '/upload.php',
|
|
// maximum number of concurrent uploads
|
|
maxConnections: 999,
|
|
onProgress: function(id, fileName, loaded, total){},
|
|
onComplete: function(id, fileName, response){},
|
|
onCancel: function(id, fileName){}
|
|
};
|
|
qq.extend(this._options, o);
|
|
|
|
this._queue = [];
|
|
// params for files in queue
|
|
this._params = [];
|
|
};
|
|
qq.UploadHandlerAbstract.prototype = {
|
|
log: function(str){
|
|
if (this._options.debug && window.console) console.log('[uploader] ' + str);
|
|
},
|
|
/**
|
|
* Adds file or file input to the queue
|
|
* @returns id
|
|
**/
|
|
add: function(file){},
|
|
/**
|
|
* Sends the file identified by id and additional query params to the server
|
|
*/
|
|
upload: function(id, params){
|
|
var len = this._queue.push(id);
|
|
|
|
var copy = {};
|
|
qq.extend(copy, params);
|
|
this._params[id] = copy;
|
|
|
|
// if too many active uploads, wait...
|
|
if (len <= this._options.maxConnections){
|
|
this._upload(id, this._params[id]);
|
|
}
|
|
},
|
|
/**
|
|
* Cancels file upload by id
|
|
*/
|
|
cancel: function(id){
|
|
this._cancel(id);
|
|
this._dequeue(id);
|
|
},
|
|
/**
|
|
* Cancells all uploads
|
|
*/
|
|
cancelAll: function(){
|
|
for (var i=0; i<this._queue.length; i++){
|
|
this._cancel(this._queue[i]);
|
|
}
|
|
this._queue = [];
|
|
},
|
|
/**
|
|
* Returns name of the file identified by id
|
|
*/
|
|
getName: function(id){},
|
|
/**
|
|
* Returns size of the file identified by id
|
|
*/
|
|
getSize: function(id){},
|
|
/**
|
|
* Returns id of files being uploaded or
|
|
* waiting for their turn
|
|
*/
|
|
getQueue: function(){
|
|
return this._queue;
|
|
},
|
|
/**
|
|
* Actual upload method
|
|
*/
|
|
_upload: function(id){},
|
|
/**
|
|
* Actual cancel method
|
|
*/
|
|
_cancel: function(id){},
|
|
/**
|
|
* Removes element from queue, starts upload of next
|
|
*/
|
|
_dequeue: function(id){
|
|
var i = qq.indexOf(this._queue, id);
|
|
this._queue.splice(i, 1);
|
|
|
|
var max = this._options.maxConnections;
|
|
|
|
if (this._queue.length >= max){
|
|
var nextId = this._queue[max-1];
|
|
this._upload(nextId, this._params[nextId]);
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Class for uploading files using form and iframe
|
|
* @inherits qq.UploadHandlerAbstract
|
|
*/
|
|
qq.UploadHandlerForm = function(o){
|
|
qq.UploadHandlerAbstract.apply(this, arguments);
|
|
|
|
this._inputs = {};
|
|
};
|
|
// @inherits qq.UploadHandlerAbstract
|
|
qq.extend(qq.UploadHandlerForm.prototype, qq.UploadHandlerAbstract.prototype);
|
|
|
|
qq.extend(qq.UploadHandlerForm.prototype, {
|
|
add: function(fileInput){
|
|
fileInput.setAttribute('name', 'qqfile');
|
|
var id = 'qq-upload-handler-iframe' + qq.getUniqueId();
|
|
|
|
this._inputs[id] = fileInput;
|
|
|
|
// remove file input from DOM
|
|
if (fileInput.parentNode){
|
|
qq.remove(fileInput);
|
|
}
|
|
|
|
return id;
|
|
},
|
|
getName: function(id){
|
|
// get input value and remove path to normalize
|
|
return this._inputs[id].value.replace(/.*(\/|\\)/, "");
|
|
},
|
|
_cancel: function(id){
|
|
this._options.onCancel(id, this.getName(id));
|
|
|
|
delete this._inputs[id];
|
|
|
|
var iframe = document.getElementById(id);
|
|
if (iframe){
|
|
// to cancel request set src to something else
|
|
// we use src="javascript:false;" because it doesn't
|
|
// trigger ie6 prompt on https
|
|
iframe.setAttribute('src', 'javascript:false;');
|
|
|
|
qq.remove(iframe);
|
|
}
|
|
},
|
|
_upload: function(id, params){
|
|
var input = this._inputs[id];
|
|
|
|
if (!input){
|
|
throw new Error('file with passed id was not added, or already uploaded or cancelled');
|
|
}
|
|
|
|
var fileName = this.getName(id);
|
|
|
|
var iframe = this._createIframe(id);
|
|
var form = this._createForm(iframe, params);
|
|
form.appendChild(input);
|
|
|
|
var self = this;
|
|
this._attachLoadEvent(iframe, function(){
|
|
self.log('iframe loaded');
|
|
|
|
var response = self._getIframeContentJSON(iframe);
|
|
|
|
self._options.onComplete(id, fileName, response);
|
|
self._dequeue(id);
|
|
|
|
delete self._inputs[id];
|
|
// timeout added to fix busy state in FF3.6
|
|
setTimeout(function(){
|
|
qq.remove(iframe);
|
|
}, 1);
|
|
});
|
|
|
|
form.submit();
|
|
qq.remove(form);
|
|
|
|
return id;
|
|
},
|
|
_attachLoadEvent: function(iframe, callback){
|
|
qq.attach(iframe, 'load', function(){
|
|
// when we remove iframe from dom
|
|
// the request stops, but in IE load
|
|
// event fires
|
|
if (!iframe.parentNode){
|
|
return;
|
|
}
|
|
|
|
// fixing Opera 10.53
|
|
if (iframe.contentDocument &&
|
|
iframe.contentDocument.body &&
|
|
iframe.contentDocument.body.innerHTML == "false"){
|
|
// In Opera event is fired second time
|
|
// when body.innerHTML changed from false
|
|
// to server response approx. after 1 sec
|
|
// when we upload file with iframe
|
|
return;
|
|
}
|
|
|
|
callback();
|
|
});
|
|
},
|
|
/**
|
|
* Returns json object received by iframe from server.
|
|
*/
|
|
_getIframeContentJSON: function(iframe){
|
|
// iframe.contentWindow.document - for IE<7
|
|
var doc = iframe.contentDocument ? iframe.contentDocument: iframe.contentWindow.document,
|
|
response;
|
|
|
|
this.log("converting iframe's innerHTML to JSON");
|
|
this.log("innerHTML = " + doc.body.innerHTML);
|
|
|
|
try {
|
|
response = eval("(" + doc.body.innerHTML + ")");
|
|
} catch(err){
|
|
response = {};
|
|
}
|
|
|
|
return response;
|
|
},
|
|
/**
|
|
* Creates iframe with unique name
|
|
*/
|
|
_createIframe: function(id){
|
|
// We can't use following code as the name attribute
|
|
// won't be properly registered in IE6, and new window
|
|
// on form submit will open
|
|
// var iframe = document.createElement('iframe');
|
|
// iframe.setAttribute('name', id);
|
|
|
|
var iframe = qq.toElement('<iframe src="javascript:false;" name="' + id + '" />');
|
|
// src="javascript:false;" removes ie6 prompt on https
|
|
|
|
iframe.setAttribute('id', id);
|
|
|
|
iframe.style.display = 'none';
|
|
document.body.appendChild(iframe);
|
|
|
|
return iframe;
|
|
},
|
|
/**
|
|
* Creates form, that will be submitted to iframe
|
|
*/
|
|
_createForm: function(iframe, params){
|
|
// We can't use the following code in IE6
|
|
// var form = document.createElement('form');
|
|
// form.setAttribute('method', 'post');
|
|
// form.setAttribute('enctype', 'multipart/form-data');
|
|
// Because in this case file won't be attached to request
|
|
var form = qq.toElement('<form method="post" enctype="multipart/form-data"></form>');
|
|
|
|
var queryString = qq.obj2url(params, this._options.action);
|
|
|
|
form.setAttribute('action', queryString);
|
|
form.setAttribute('target', iframe.name);
|
|
form.style.display = 'none';
|
|
document.body.appendChild(form);
|
|
|
|
return form;
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Class for uploading files using xhr
|
|
* @inherits qq.UploadHandlerAbstract
|
|
*/
|
|
qq.UploadHandlerXhr = function(o){
|
|
qq.UploadHandlerAbstract.apply(this, arguments);
|
|
|
|
this._files = [];
|
|
this._xhrs = [];
|
|
|
|
// current loaded size in bytes for each file
|
|
this._loaded = [];
|
|
};
|
|
|
|
// static method
|
|
qq.UploadHandlerXhr.isSupported = function(){
|
|
var input = document.createElement('input');
|
|
input.type = 'file';
|
|
|
|
return (
|
|
'multiple' in input &&
|
|
typeof File != "undefined" &&
|
|
typeof (new XMLHttpRequest()).upload != "undefined" );
|
|
};
|
|
|
|
// @inherits qq.UploadHandlerAbstract
|
|
qq.extend(qq.UploadHandlerXhr.prototype, qq.UploadHandlerAbstract.prototype)
|
|
|
|
qq.extend(qq.UploadHandlerXhr.prototype, {
|
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/**
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* Adds file to the queue
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* Returns id to use with upload, cancel
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**/
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add: function(file){
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if (!(file instanceof File)){
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throw new Error('Passed obj in not a File (in qq.UploadHandlerXhr)');
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}
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return this._files.push(file) - 1;
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},
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getName: function(id){
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var file = this._files[id];
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// fix missing name in Safari 4
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return file.fileName != null ? file.fileName : file.name;
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},
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getSize: function(id){
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var file = this._files[id];
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return file.fileSize != null ? file.fileSize : file.size;
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},
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/**
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* Returns uploaded bytes for file identified by id
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*/
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getLoaded: function(id){
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return this._loaded[id] || 0;
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},
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/**
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* Sends the file identified by id and additional query params to the server
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* @param {Object} params name-value string pairs
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*/
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_upload: function(id, params){
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var file = this._files[id],
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name = this.getName(id),
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size = this.getSize(id);
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this._loaded[id] = 0;
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var xhr = this._xhrs[id] = new XMLHttpRequest();
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var self = this;
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xhr.upload.onprogress = function(e){
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if (e.lengthComputable){
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self._loaded[id] = e.loaded;
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self._options.onProgress(id, name, e.loaded, e.total);
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}
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};
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xhr.onreadystatechange = function(){
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if (xhr.readyState == 4){
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self._onComplete(id, xhr);
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}
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};
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// build query string
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params = params || {};
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params['qqfile'] = name;
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var queryString = qq.obj2url(params, this._options.action);
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xhr.open("POST", queryString, true);
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xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
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xhr.setRequestHeader("X-File-Name", encodeURIComponent(name));
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xhr.setRequestHeader("Content-Type", "application/octet-stream");
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xhr.send(file);
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},
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_onComplete: function(id, xhr){
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// the request was aborted/cancelled
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if (!this._files[id]) return;
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var name = this.getName(id);
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var size = this.getSize(id);
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this._options.onProgress(id, name, size, size);
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if (xhr.status == 200){
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this.log("xhr - server response received");
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this.log("responseText = " + xhr.responseText);
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var response;
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try {
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response = eval("(" + xhr.responseText + ")");
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} catch(err){
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response = {};
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}
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this._options.onComplete(id, name, response);
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} else {
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this._options.onComplete(id, name, {});
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}
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this._files[id] = null;
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this._xhrs[id] = null;
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this._dequeue(id);
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},
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_cancel: function(id){
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this._options.onCancel(id, this.getName(id));
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this._files[id] = null;
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if (this._xhrs[id]){
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this._xhrs[id].abort();
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this._xhrs[id] = null;
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}
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}
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}); |