/** * Ajax upload * Project page - http://valums.com/ajax-upload/ * Copyright (c) 2008 Andris Valums, http://valums.com * Licensed under the MIT license (http://valums.com/mit-license/) * Version 3.0 (05.04.2009) */ /** * Changes from the previous version * 1. Fixed Opera 9.64 response problem * 2. Added responseType parameter * * For the full changelog please visit: * http://valums.com/ajax-upload-changelog/ */ (function(){ var d = document, w = window; /** * Get element by id */ function get(element){ if (typeof element == "string") element = d.getElementById(element); return element; } /** * Attaches event to a dom element */ function addEvent(el, type, fn){ if (w.addEventListener){ el.addEventListener(type, fn, false); } else if (w.attachEvent){ var f = function(){ fn.call(el, w.event); }; el.attachEvent('on' + type, f) } } /** * Creates and returns element from html chunk */ var toElement = function(){ var div = d.createElement('div'); return function(html){ div.innerHTML = html; var el = div.childNodes[0]; div.removeChild(el); return el; } }(); function hasClass(ele,cls){ return ele.className.match(new RegExp('(\\s|^)'+cls+'(\\s|$)')); } function addClass(ele,cls) { if (!hasClass(ele,cls)) ele.className += " "+cls; } function removeClass(ele,cls) { var reg = new RegExp('(\\s|^)'+cls+'(\\s|$)'); ele.className=ele.className.replace(reg,' '); } // 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(), doc = el.ownerDocument, body = doc.body, docElem = doc.documentElement, // for ie clientTop = docElem.clientTop || body.clientTop || 0, 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. 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){ if (w.jQuery){ return jQuery(el).offset(); } var top = 0, left = 0; do { top += el.offsetTop || 0; left += el.offsetLeft || 0; } while (el = el.offsetParent); return { left: left, top: top }; } } 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 }; } /** * Crossbrowser mouse coordinates */ function getMouseCoords(e){ // pageX/Y is not supported in IE // http://www.quirksmode.org/dom/w3c_cssom.html if (!e.pageX && e.clientX){ // In Internet Explorer 7 some properties (mouse coordinates) are treated as physical, // while others are logical (offset). var zoom = 1; var body = document.body; if (body.getBoundingClientRect) { var bound = body.getBoundingClientRect(); zoom = (bound.right - bound.left)/body.clientWidth; } return { x: e.clientX / zoom + d.body.scrollLeft + d.documentElement.scrollLeft, y: e.clientY / zoom + d.body.scrollTop + d.documentElement.scrollTop }; } return { x: e.pageX, y: e.pageY }; } /** * Function generates unique id */ var getUID = function(){ var id = 0; return function(){ return 'ValumsAjaxUpload' + id++; } }(); function fileFromPath(file){ return file.replace(/.*(\/|\\)/, ""); } function getExt(file){ return (/[.]/.exec(file)) ? /[^.]+$/.exec(file.toLowerCase()) : ''; } // Please use AjaxUpload , Ajax_upload will be removed in the next version Ajax_upload = AjaxUpload = function(button, options){ if (button.jquery){ // jquery object was passed button = button[0]; } else if (typeof button == "string" && /^#.*/.test(button)){ button = button.slice(1); } button = get(button); this._input = null; this._button = button; this._disabled = false; this._submitting = false; 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, // When user selects a file, useful with autoSubmit disabled 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 onComplete: function(file, response) {} }; // Merge the users options with our defaults for (var i in options) { this._settings[i] = options[i]; } this._createInput(); this._rerouteClicks(); } // assigning methods to our class AjaxUpload.prototype = { setData : function(data){ this._settings.data = data; }, disable : function(){ this._disabled = true; }, enable : function(){ this._disabled = false; }, // use setData instead, set_data will be removed in the next version set_data : function(data){ this.setData(data); }, // removes ajaxupload destroy : function(){ if(this._input){ if(this._input.parentNode){ this._input.parentNode.removeChild(this._input); } this._input = null; } }, /** * Creates invisible file input above the button */ _createInput : function(){ var self = this; var input = d.createElement("input"); input.setAttribute('type', 'file'); input.setAttribute('name', this._settings.name); var styles = { 'position' : 'absolute' ,'margin': '-5px 0 0 -175px' ,'padding': 0 ,'width': '220px' ,'height': '10px' ,'opacity': 0 ,'cursor': 'pointer' ,'display' : 'none' ,'zIndex' : 2147483583 //Max zIndex supported by Opera 9.0-9.2x // Strange, I expected 2147483647 }; for (var i in styles){ input.style[i] = styles[i]; } // Make sure that element opacity exists // (IE uses filter instead) if ( ! (input.style.opacity === "0")){ input.style.filter = "alpha(opacity=0)"; } d.body.appendChild(input); if (window.jQuery && jQuery.ui && jQuery.ui.dialog){ // make plugin compatible when using with ui-dialogs with modal = true jQuery(input) .wrap('
') .parent() .addClass('ui-dialog-ajaxupload') .css({ 'zIndex': styles.zIndex ,'width': 0 ,'height': 0 ,'padding': 0 ,'margin': 0 }); } addEvent(input, 'change', function(){ // get filename from input var file = fileFromPath(this.value); if(self._settings.onChange.call(self, file, getExt(file)) == false ){ return; } // Submit form when value is changed if (self._settings.autoSubmit){ self.submit(); } }); this._input = input; }, _rerouteClicks : function (){ var self = this; // IE displays 'access denied' error when using this method // other browsers just ignore click() // addEvent(this._button, 'click', function(e){ // self._input.click(); // }); var box, over = false; addEvent(self._button, 'mouseover', function(e){ if (!self._input || over) return; over = true; box = getBox(self._button); }); // we can't use mouseout on the button, // because invisible input is over it addEvent(document, 'mousemove', function(e){ var input = self._input; if (!input || !over) return; if (self._disabled){ removeClass(self._button, 'hover'); input.style.display = 'none'; return; } var c = getMouseCoords(e); if ((c.x >= box.left) && (c.x <= box.right) && (c.y >= box.top) && (c.y <= box.bottom)){ input.style.top = c.y + 'px'; input.style.left = c.x + 'px'; input.style.display = 'block'; addClass(self._button, 'hover'); } else { // mouse left the button over = false; input.style.display = 'none'; removeClass(self._button, 'hover'); } }); }, /** * Creates iframe with unique name */ _createIframe : function(){ // unique name // We cannot use getTime, because it sometimes return // same value in safari :( var id = getUID(); // Remove ie6 "This page contains both secure and nonsecure items" prompt // http://tinyurl.com/77w9wh var iframe = toElement(''); iframe.id = id; iframe.style.display = 'none'; d.body.appendChild(iframe); return iframe; }, /** * Upload file without refreshing the page */ submit : function(){ var self = this, settings = this._settings; if (this._input.value === ''){ // there is no file return; } // get filename from input var file = fileFromPath(this._input.value); // execute user event if (! (settings.onSubmit.call(this, file, getExt(file)) == false)) { // Create new iframe for this submission var iframe = this._createIframe(); // Do not submit if user function returns false var form = this._createForm(iframe); form.appendChild(this._input); form.submit(); d.body.removeChild(form); form = null; this._input = null; // create new input this._createInput(); var toDeleteFlag = false; var fired = false; addEvent(iframe, 'load', function(e){ if (iframe.src == "about:blank"){ // First time around, do not delete. if( toDeleteFlag ){ // Fix busy state in FF3 setTimeout( function() { d.body.removeChild(iframe); }, 0); } return; } if (fired){ // Event was already fired // fixing Opera 9.64 that do it multiple times return; } var doc = iframe.contentDocument ? iframe.contentDocument : frames[iframe.id].document; // fixing Opera 9.26 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 fired = true; 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 window.setTimeout(function(){ onLoad(); }, 4321); } else { onLoad(); } function onLoad(){ var response; if (doc.XMLDocument){ // response is a xml document IE property response = doc.XMLDocument; } else if (doc.body){ // response is html document or plain text response = doc.body.innerHTML; if (settings.responseType == 'json'){ response = window["eval"]("(" + response + ")"); } } else { // response is a xml document var 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; iframe.src = "about:blank"; //load event fired } }); } else { // clear input to allow user to select same file this._input.value = ''; } }, /** * Creates form, that will be submitted to iframe */ _createForm : function(iframe){ var settings = this._settings; // method, enctype must be specified here // because changing this attr on the fly is not allowed in IE 6/7 var form = toElement(''); form.style.display = 'none'; form.action = settings.action; form.target = iframe.name; d.body.appendChild(form); // Create hidden input element for each data key for (var prop in settings.data){ var el = d.createElement("input"); el.type = 'hidden'; el.name = prop; el.value = settings.data[prop]; form.appendChild(el); } return form; } }; })();