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/air/src/NativeObservable.js
/* * Ext JS Library 0.20 * Copyright(c) 2006-2008, Ext JS, LLC. * licensing@extjs.com * * http://extjs.com/license */ /** * @class Ext.air.NativeObservable * @extends Ext.util.Observable * * Adds ability for Ext Observable functionality to proxy events for native (AIR) object wrappers * * @constructor */ Ext.air.NativeObservable = Ext.extend(Ext.util.Observable, { addListener : function(name){ this.proxiedEvents = this.proxiedEvents || {}; if(!this.proxiedEvents[name]){ var instance = this; var f = function(){ var args = Array.prototype.slice.call(arguments, 0); args.unshift(name); instance.fireEvent.apply(instance, args); }; this.proxiedEvents[name] = f; this.getNative().addEventListener(name, f); } Ext.air.NativeObservable.superclass.addListener.apply(this, arguments); } }); Ext.air.NativeObservable.prototype.on = Ext.air.NativeObservable.prototype.addListener;