Upgrade to ExtJS 4.0.0 - Released 04/26/2011

[extjs.git] / src / ext-core / src / core / Loader.js

diff --git a/src/ext-core/src/core/Loader.js b/src/ext-core/src/core/Loader.js
deleted file mode 100644 (file)
index d8a39f2..0000000
--- a/src/ext-core/src/core/Loader.js
+++ /dev/null
@@ -1,96 +0,0 @@
-/*!
- * Ext JS Library 3.3.1
- * Copyright(c) 2006-2010 Sencha Inc.
- * licensing@sencha.com
- * http://www.sencha.com/license
- */
-/**
- * @class Ext.Loader
- * @singleton
- * Simple class to help load JavaScript files on demand
- */
-Ext.Loader = Ext.apply({}, {
-    /**
-     * Loads a given set of .js files. Calls the callback function when all files have been loaded
-     * Set preserveOrder to true to ensure non-parallel loading of files if load order is important
-     * @param {Array} fileList Array of all files to load
-     * @param {Function} callback Callback to call after all files have been loaded
-     * @param {Object} scope The scope to call the callback in
-     * @param {Boolean} preserveOrder True to make files load in serial, one after the other (defaults to false)
-     */
-    load: function(fileList, callback, scope, preserveOrder) {
-        var scope       = scope || this,
-            head        = document.getElementsByTagName("head")[0],
-            fragment    = document.createDocumentFragment(),
-            numFiles    = fileList.length,
-            loadedFiles = 0,
-            me          = this;
-        
-        /**
-         * Loads a particular file from the fileList by index. This is used when preserving order
-         */
-        var loadFileIndex = function(index) {
-            head.appendChild(
-                me.buildScriptTag(fileList[index], onFileLoaded)
-            );
-        };
-        
-        /**
-         * Callback function which is called after each file has been loaded. This calls the callback
-         * passed to load once the final file in the fileList has been loaded
-         */
-        var onFileLoaded = function() {
-            loadedFiles ++;
-            
-            //if this was the last file, call the callback, otherwise load the next file
-            if (numFiles == loadedFiles && typeof callback == 'function') {
-                callback.call(scope);
-            } else {
-                if (preserveOrder === true) {
-                    loadFileIndex(loadedFiles);
-                }
-            }
-        };
-        
-        if (preserveOrder === true) {
-            loadFileIndex.call(this, 0);
-        } else {
-            //load each file (most browsers will do this in parallel)
-            Ext.each(fileList, function(file, index) {
-                fragment.appendChild(
-                    this.buildScriptTag(file, onFileLoaded)
-                );  
-            }, this);
-            
-            head.appendChild(fragment);
-        }
-    },
-    
-    /**
-     * @private
-     * Creates and returns a script tag, but does not place it into the document. If a callback function
-     * is passed, this is called when the script has been loaded
-     * @param {String} filename The name of the file to create a script tag for
-     * @param {Function} callback Optional callback, which is called when the script has been loaded
-     * @return {Element} The new script ta
-     */
-    buildScriptTag: function(filename, callback) {
-        var script  = document.createElement('script');
-        script.type = "text/javascript";
-        script.src  = filename;
-        
-        //IE has a different way of handling <script> loads, so we need to check for it here
-        if (script.readyState) {
-            script.onreadystatechange = function() {
-                if (script.readyState == "loaded" || script.readyState == "complete") {
-                    script.onreadystatechange = null;
-                    callback();
-                }
-            };
-        } else {
-            script.onload = callback;
-        }    
-        
-        return script;
-    }
-});