(function(root,factory){if(typeof exports==="object"&&typeof module==="object")module.exports=factory();else if(typeof define==="function"&&define.amd)define("EventBus",[],factory);else if(typeof exports==="object")exports["EventBus"]=factory();else root["EventBus"]=factory()})(this,function(){var EventBusClass={};EventBusClass=function(){this.listeners={}};EventBusClass.prototype={addEventListener:function(type,callback,scope){var args=[];var numOfArgs=arguments.length;for(var i=0;i<numOfArgs;i++){args.push(arguments[i])}args=args.length>3?args.splice(3,args.length-1):[];if(typeof this.listeners[type]!="undefined"){this.listeners[type].push({scope:scope,callback:callback,args:args})}else{this.listeners[type]=[{scope:scope,callback:callback,args:args}]}},removeEventListener:function(type,callback,scope){if(typeof this.listeners[type]!="undefined"){var numOfCallbacks=this.listeners[type].length;var newArray=[];for(var i=0;i<numOfCallbacks;i++){var listener=this.listeners[type][i];if(listener.scope==scope&&listener.callback==callback){}else{newArray.push(listener)}}this.listeners[type]=newArray}},hasEventListener:function(type,callback,scope){if(typeof this.listeners[type]!="undefined"){var numOfCallbacks=this.listeners[type].length;if(callback===undefined&&scope===undefined){return numOfCallbacks>0}for(var i=0;i<numOfCallbacks;i++){var listener=this.listeners[type][i];if((scope?listener.scope==scope:true)&&listener.callback==callback){return true}}}return false},dispatch:function(type,target){var event={type:type,target:target};var args=[];var numOfArgs=arguments.length;for(var i=0;i<numOfArgs;i++){args.push(arguments[i])}args=args.length>2?args.splice(2,args.length-1):[];args=[event].concat(args);if(typeof this.listeners[type]!="undefined"){var listeners=this.listeners[type].slice();var numOfCallbacks=listeners.length;for(var i=0;i<numOfCallbacks;i++){var listener=listeners[i];if(listener&&listener.callback){var concatArgs=args.concat(listener.args);listener.callback.apply(listener.scope,concatArgs)}}}},getEvents:function(){var str="";for(var type in this.listeners){var numOfCallbacks=this.listeners[type].length;for(var i=0;i<numOfCallbacks;i++){var listener=this.listeners[type][i];str+=listener.scope&&listener.scope.className?listener.scope.className:"anonymous";str+=" listen for '"+type+"'\n"}}return str}};var EventBus=new EventBusClass;return EventBus});