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-/**
- * AJAX Upload ( http://valums.com/ajax-upload/ )
- * Copyright (c) Andris Valums
- * Licensed under the MIT license ( http://valums.com/mit-license/ )
- * Thanks to Gary Haran, David Mark, Corey Burns and others for contributions.
- */
-
-(function () {
- /* global window */
- /* jslint browser: true, devel: true, undef: true, nomen: true, bitwise: true, regexp: true, newcap: true, immed: true */
-
- /**
- * Wrapper for FireBug's console.log
- */
- function log(){
- if (typeof(console) != 'undefined' && typeof(console.log) == 'function'){
- Array.prototype.unshift.call(arguments, '[Ajax Upload]');
- console.log( Array.prototype.join.call(arguments, ' '));
- }
- }
-
- /**
- * Attaches event to a dom element.
- * @param {Element} el
- * @param type event name
- * @param fn callback This refers to the passed element
- */
- function addEvent(el, type, fn){
- if (el.addEventListener) {
- el.addEventListener(type, fn, false);
- } else if (el.attachEvent) {
- el.attachEvent('on' + type, function(){
- fn.call(el);
- });
- } else {
- throw new Error('not supported or DOM not loaded');
- }
- }
-
- /**
- * Attaches resize event to a window, limiting
- * number of event fired. Fires only when encounteres
- * delay of 100 after series of events.
- *
- * Some browsers fire event multiple times when resizing
- * http://www.quirksmode.org/dom/events/resize.html
- *
- * @param fn callback This refers to the passed element
- */
- function addResizeEvent(fn){
- var timeout;
-
- addEvent(window, 'resize', function(){
- if (timeout){
- clearTimeout(timeout);
- }
- timeout = setTimeout(fn, 100);
- });
- }
-
- // Needs more testing, will be rewriten for next version
- // getOffset function copied from jQuery lib (http://jquery.com/)
- if (document.documentElement.getBoundingClientRect){
- // Get Offset using getBoundingClientRect
- // http://ejohn.org/blog/getboundingclientrect-is-awesome/
- var getOffset = function(el){
- var box = el.getBoundingClientRect();
- var doc = el.ownerDocument;
- var body = doc.body;
- var docElem = doc.documentElement; // for ie
- var clientTop = docElem.clientTop || body.clientTop || 0;
- var clientLeft = docElem.clientLeft || body.clientLeft || 0;
-
- // In Internet Explorer 7 getBoundingClientRect property is treated as physical,
- // while others are logical. Make all logical, like in IE8.
- var zoom = 1;
- if (body.getBoundingClientRect) {
- var bound = body.getBoundingClientRect();
- zoom = (bound.right - bound.left) / body.clientWidth;
- }
-
- if (zoom > 1) {
- clientTop = 0;
- clientLeft = 0;
- }
-
- var top = box.top / zoom + (window.pageYOffset || docElem && docElem.scrollTop / zoom || body.scrollTop / zoom) - clientTop, left = box.left / zoom + (window.pageXOffset || docElem && docElem.scrollLeft / zoom || body.scrollLeft / zoom) - clientLeft;
-
- return {
- top: top,
- left: left
- };
- };
- } else {
- // Get offset adding all offsets
- var getOffset = function(el){
- var top = 0, left = 0;
- do {
- top += el.offsetTop || 0;
- left += el.offsetLeft || 0;
- el = el.offsetParent;
- } while (el);
-
- return {
- left: left,
- top: top
- };
- };
- }
-
- /**
- * Returns left, top, right and bottom properties describing the border-box,
- * in pixels, with the top-left relative to the body
- * @param {Element} el
- * @return {Object} Contains left, top, right,bottom
- */
- function getBox(el){
- var left, right, top, bottom;
- var offset = getOffset(el);
- left = offset.left;
- top = offset.top;
-
- right = left + el.offsetWidth;
- bottom = top + el.offsetHeight;
-
- return {
- left: left,
- right: right,
- top: top,
- bottom: bottom
- };
- }
-
- /**
- * Helper that takes object literal
- * and add all properties to element.style
- * @param {Element} el
- * @param {Object} styles
- */
- function addStyles(el, styles){
- for (var name in styles) {
- if (styles.hasOwnProperty(name)) {
- el.style[name] = styles[name];
- }
- }
- }
-
- /**
- * Function places an absolutely positioned
- * element on top of the specified element
- * copying position and dimentions.
- * @param {Element} from
- * @param {Element} to
- */
- function copyLayout(from, to){
- var box = getBox(from);
-
- addStyles(to, {
- position: 'absolute',
- left : box.left + 'px',
- top : box.top + 'px',
- width : from.offsetWidth + 'px',
- height : from.offsetHeight + 'px'
- });
- to.title = from.title;
-
- }
-
- /**
- * Creates and returns element from html chunk
- * Uses innerHTML to create an element
- */
- var toElement = (function(){
- var div = document.createElement('div');
- return function(html){
- div.innerHTML = html;
- var el = div.firstChild;
- return div.removeChild(el);
- };
- })();
-
- /**
- * Function generates unique id
- * @return unique id
- */
- var getUID = (function(){
- var id = 0;
- return function(){
- return 'ValumsAjaxUpload' + id++;
- };
- })();
-
- /**
- * Get file name from path
- * @param {String} file path to file
- * @return filename
- */
- function fileFromPath(file){
- return file.replace(/.*(\/|\\)/, "");
- }
-
- /**
- * Get file extension lowercase
- * @param {String} file name
- * @return file extenstion
- */
- function getExt(file){
- return (-1 !== file.indexOf('.')) ? file.replace(/.*[.]/, '') : '';
- }
-
- function hasClass(el, name){
- var re = new RegExp('\\b' + name + '\\b');
- return re.test(el.className);
- }
- function addClass(el, name){
- if ( ! hasClass(el, name)){
- el.className += ' ' + name;
- }
- }
- function removeClass(el, name){
- var re = new RegExp('\\b' + name + '\\b');
- el.className = el.className.replace(re, '');
- }
-
- function removeNode(el){
- el.parentNode.removeChild(el);
- }
-
- /**
- * Easy styling and uploading
- * @constructor
- * @param button An element you want convert to
- * upload button. Tested dimentions up to 500x500px
- * @param {Object} options See defaults below.
- */
- window.AjaxUpload = function(button, options){
- this._settings = {
- // Location of the server-side upload script
- action: 'upload.php',
- // File upload name
- name: 'userfile',
- // Additional data to send
- data: {},
- // Submit file as soon as it's selected
- autoSubmit: true,
- // The type of data that you're expecting back from the server.
- // html and xml are detected automatically.
- // Only useful when you are using json data as a response.
- // Set to "json" in that case.
- responseType: false,
- // Class applied to button when mouse is hovered
- hoverClass: 'hover',
- // Class applied to button when button is focused
- focusClass: 'focus',
- // Class applied to button when AU is disabled
- disabledClass: 'disabled',
- // When user selects a file, useful with autoSubmit disabled
- // You can return false to cancel upload
- onChange: function(file, extension){
- },
- // Callback to fire before file is uploaded
- // You can return false to cancel upload
- onSubmit: function(file, extension){
- },
- // Fired when file upload is completed
- // WARNING! DO NOT USE "FALSE" STRING AS A RESPONSE!
- onComplete: function(file, response){
- }
- };
-
- // Merge the users options with our defaults
- for (var i in options) {
- if (options.hasOwnProperty(i)){
- this._settings[i] = options[i];
- }
- }
-
- // button isn't necessary a dom element
- if (button.jquery){
- // jQuery object was passed
- button = button[0];
- } else if (typeof button == "string") {
- if (/^#.*/.test(button)){
- // If jQuery user passes #elementId don't break it
- button = button.slice(1);
- }
-
- button = document.getElementById(button);
- }
-
- if ( ! button || button.nodeType !== 1){
- throw new Error("Please make sure that you're passing a valid element");
- }
-
- if ( button.nodeName.toUpperCase() == 'A'){
- // disable link
- addEvent(button, 'click', function(e){
- if (e && e.preventDefault){
- e.preventDefault();
- } else if (window.event){
- window.event.returnValue = false;
- }
- });
- }
-
- // DOM element
- this._button = button;
- // DOM element
- this._input = null;
- // If disabled clicking on button won't do anything
- this._disabled = false;
-
- // if the button was disabled before refresh if will remain
- // disabled in FireFox, let's fix it
- this.enable();
-
- this._rerouteClicks();
- };
-
- // assigning methods to our class
- AjaxUpload.prototype = {
- setData: function(data){
- this._settings.data = data;
- },
- disable: function(){
- addClass(this._button, this._settings.disabledClass);
- this._disabled = true;
-
- var nodeName = this._button.nodeName.toUpperCase();
- if (nodeName == 'INPUT' || nodeName == 'BUTTON'){
- this._button.setAttribute('disabled', 'disabled');
- }
-
- // hide input
- if (this._input){
- // We use visibility instead of display to fix problem with Safari 4
- // The problem is that the value of input doesn't change if it
- // has display none when user selects a file
- this._input.parentNode.style.visibility = 'hidden';
- }
- },
- enable: function(){
- removeClass(this._button, this._settings.disabledClass);
- this._button.removeAttribute('disabled');
- this._disabled = false;
-
- },
- /**
- * Creates invisible file input
- * that will hover above the button
- * <div><input type='file' /></div>
- */
- _createInput: function(){
- var self = this;
-
- var input = document.createElement("input");
- input.setAttribute('type', 'file');
- input.setAttribute('name', this._settings.name);
-
- addStyles(input, {
- 'position' : 'absolute',
- // in Opera only 'browse' button
- // is clickable and it is located at
- // the right side of the input
- 'right' : 0,
- 'margin' : 0,
- 'padding' : 0,
- 'fontSize' : '480px',
- // in Firefox if font-family is set to
- // 'inherit' the input doesn't work
- 'fontFamily' : 'sans-serif',
- 'cursor' : 'pointer'
- });
-
- var div = document.createElement("div");
- addStyles(div, {
- 'display' : 'block',
- 'position' : 'absolute',
- 'overflow' : 'hidden',
- 'margin' : 0,
- 'padding' : 0,
- 'opacity' : 0,
- // Make sure browse button is in the right side
- // in Internet Explorer
- 'direction' : 'ltr',
- //Max zIndex supported by Opera 9.0-9.2
- 'zIndex': 2147483583,
- 'cursor' : 'pointer'
-
- });
-
- // Make sure that element opacity exists.
- // Otherwise use IE filter
- if ( div.style.opacity !== "0") {
- if (typeof(div.filters) == 'undefined'){
- throw new Error('Opacity not supported by the browser');
- }
- div.style.filter = "alpha(opacity=0)";
- }
-
- addEvent(input, 'change', function(){
-
- if ( ! input || input.value === ''){
- return;
- }
-
- // Get filename from input, required
- // as some browsers have path instead of it
- var file = fileFromPath(input.value);
-
- if (false === self._settings.onChange.call(self, file, getExt(file))){
- self._clearInput();
- return;
- }
-
- // Submit form when value is changed
- if (self._settings.autoSubmit) {
- self.submit();
- }
- });
-
- addEvent(input, 'mouseover', function(){
- addClass(self._button, self._settings.hoverClass);
- });
-
- addEvent(input, 'mouseout', function(){
- removeClass(self._button, self._settings.hoverClass);
- removeClass(self._button, self._settings.focusClass);
-
- // We use visibility instead of display to fix problem with Safari 4
- // The problem is that the value of input doesn't change if it
- // has display none when user selects a file
- input.parentNode.style.visibility = 'hidden';
-
- });
-
- addEvent(input, 'focus', function(){
- addClass(self._button, self._settings.focusClass);
- });
-
- addEvent(input, 'blur', function(){
- removeClass(self._button, self._settings.focusClass);
- });
-
- div.appendChild(input);
- document.body.appendChild(div);
-
- this._input = input;
- },
- _clearInput : function(){
- if (!this._input){
- return;
- }
-
- // this._input.value = ''; Doesn't work in IE6
- removeNode(this._input.parentNode);
- this._input = null;
- this._createInput();
-
- removeClass(this._button, this._settings.hoverClass);
- removeClass(this._button, this._settings.focusClass);
- },
- /**
- * Function makes sure that when user clicks upload button,
- * the this._input is clicked instead
- */
- _rerouteClicks: function(){
- var self = this;
-
- // IE will later display 'access denied' error
- // if you use using self._input.click()
- // other browsers just ignore click()
-
- addEvent(self._button, 'mouseover', function(){
- if (self._disabled){
- return;
- }
-
- if ( ! self._input){
- self._createInput();
- }
-
- var div = self._input.parentNode;
- copyLayout(self._button, div);
- div.style.visibility = 'visible';
-
- });
-
-
- // commented because we now hide input on mouseleave
- /**
- * When the window is resized the elements
- * can be misaligned if button position depends
- * on window size
- */
- //addResizeEvent(function(){
- // if (self._input){
- // copyLayout(self._button, self._input.parentNode);
- // }
- //});
-
- },
- /**
- * Creates iframe with unique name
- * @return {Element} iframe
- */
- _createIframe: function(){
- // We can't use getTime, because it sometimes return
- // same value in safari :(
- var id = getUID();
-
- // 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 = toElement('<iframe src="javascript:false;" name="' + id + '" />');
- // src="javascript:false; was added
- // because it possibly removes ie6 prompt
- // "This page contains both secure and nonsecure items"
- // Anyway, it doesn't do any harm.
- iframe.setAttribute('id', id);
-
- iframe.style.display = 'none';
- document.body.appendChild(iframe);
-
- return iframe;
- },
- /**
- * Creates form, that will be submitted to iframe
- * @param {Element} iframe Where to submit
- * @return {Element} form
- */
- _createForm: function(iframe){
- var settings = this._settings;
-
- // 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 = toElement('<form method="post" enctype="multipart/form-data"></form>');
-
- form.setAttribute('action', settings.action);
- form.setAttribute('target', iframe.name);
- form.style.display = 'none';
- document.body.appendChild(form);
-
- // Create hidden input element for each data key
- for (var prop in settings.data) {
- if (settings.data.hasOwnProperty(prop)){
- var el = document.createElement("input");
- el.setAttribute('type', 'hidden');
- el.setAttribute('name', prop);
- el.setAttribute('value', settings.data[prop]);
- form.appendChild(el);
- }
- }
- return form;
- },
- /**
- * Gets response from iframe and fires onComplete event when ready
- * @param iframe
- * @param file Filename to use in onComplete callback
- */
- _getResponse : function(iframe, file){
- // getting response
- var toDeleteFlag = false, self = this, settings = this._settings;
-
- addEvent(iframe, 'load', function(){
-
- if (// For Safari
- iframe.src == "javascript:'%3Chtml%3E%3C/html%3E';" ||
- // For FF, IE
- iframe.src == "javascript:'<html></html>';"){
- // First time around, do not delete.
- // We reload to blank page, so that reloading main page
- // does not re-submit the post.
-
- if (toDeleteFlag) {
- // Fix busy state in FF3
- setTimeout(function(){
- removeNode(iframe);
- }, 0);
- }
-
- return;
- }
-
- var doc = iframe.contentDocument ? iframe.contentDocument : window.frames[iframe.id].document;
-
- // fixing Opera 9.26,10.00
- if (doc.readyState && doc.readyState != 'complete') {
- // Opera fires load event multiple times
- // Even when the DOM is not ready yet
- // this fix should not affect other browsers
- return;
- }
-
- // fixing Opera 9.64
- if (doc.body && doc.body.innerHTML == "false") {
- // In Opera 9.64 event was fired second time
- // when body.innerHTML changed from false
- // to server response approx. after 1 sec
- return;
- }
-
- var response;
-
- if (doc.XMLDocument) {
- // response is a xml document Internet Explorer property
- response = doc.XMLDocument;
- } else if (doc.body){
- // response is html document or plain text
- response = doc.body.innerHTML;
-
- if (settings.responseType && settings.responseType.toLowerCase() == 'json') {
- // If the document was sent as 'application/javascript' or
- // 'text/javascript', then the browser wraps the text in a <pre>
- // tag and performs html encoding on the contents. In this case,
- // we need to pull the original text content from the text node's
- // nodeValue property to retrieve the unmangled content.
- // Note that IE6 only understands text/html
- if (doc.body.firstChild && doc.body.firstChild.nodeName.toUpperCase() == 'PRE') {
- doc.normalize();
- response = doc.body.firstChild.firstChild.nodeValue;
- }
-
- if (response) {
- response = eval("(" + response + ")");
- } else {
- response = {};
- }
- }
- } else {
- // response is a xml document
- response = doc;
- }
-
- settings.onComplete.call(self, file, response);
-
- // Reload blank page, so that reloading main page
- // does not re-submit the post. Also, remember to
- // delete the frame
- toDeleteFlag = true;
-
- // Fix IE mixed content issue
- iframe.src = "javascript:'<html></html>';";
- });
- },
- /**
- * Upload file contained in this._input
- */
- submit: function(){
- var self = this, settings = this._settings;
-
- if ( ! this._input || this._input.value === ''){
- return;
- }
-
- var file = fileFromPath(this._input.value);
-
- // user returned false to cancel upload
- if (false === settings.onSubmit.call(this, file, getExt(file))){
- this._clearInput();
- return;
- }
-
- // sending request
- var iframe = this._createIframe();
- var form = this._createForm(iframe);
-
- // assuming following structure
- // div -> input type='file'
- removeNode(this._input.parentNode);
- removeClass(self._button, self._settings.hoverClass);
- removeClass(self._button, self._settings.focusClass);
-
- form.appendChild(this._input);
-
- form.submit();
-
- // request set, clean up
- removeNode(form); form = null;
- removeNode(this._input); this._input = null;
-
- // Get response from iframe and fire onComplete event when ready
- this._getResponse(iframe, file);
-
- // get ready for next request
- this._createInput();
- }
- };
-})();
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 12:32:09 +0000