www.gusucode.com > 一个基于extjs的强大聊天插件源码程序 > 一个基于extjs的强大聊天插件/extjame/ext-jame/js/ext2/source/data/DataProxy.js
/* * Ext JS Library 2.0.2 * Copyright(c) 2006-2008, Ext JS, LLC. * licensing@extjs.com * * http://extjs.com/license */ /** * @class Ext.data.DataProxy * @extends Ext.util.Observable * This class is an abstract base class for implementations which provide retrieval of * unformatted data objects.<br> * <p> * DataProxy implementations are usually used in conjunction with an implementation of Ext.data.DataReader * (of the appropriate type which knows how to parse the data object) to provide a block of * {@link Ext.data.Records} to an {@link Ext.data.Store}.<br> * <p> * Custom implementations must implement the load method as described in * {@link Ext.data.HttpProxy#load}. */ Ext.data.DataProxy = function(){ this.addEvents( /** * @event beforeload * Fires before a network request is made to retrieve a data object. * @param {Object} This DataProxy object. * @param {Object} params The params parameter to the load function. */ 'beforeload', /** * @event load * Fires before the load method's callback is called. * @param {Object} This DataProxy object. * @param {Object} o The data object. * @param {Object} arg The callback argument object passed to the load function. */ 'load', /** * @event loadexception * Fires if an Exception occurs during data retrieval. * @param {Object} This DataProxy object. * @param {Object} o The data object. * @param {Object} arg The callback argument object passed to the load function. * @param {Object} e The Exception. */ 'loadexception' ); Ext.data.DataProxy.superclass.constructor.call(this); }; Ext.extend(Ext.data.DataProxy, Ext.util.Observable);