flex 事件 一处分发，任意监听

代码：

package com.evrnt
{
    import flash.events.Event;
    import flash.events.EventDispatcher;
    import flash.events.IEventDispatcher;

    public class InputEventDispatcher   {

        private static var _inst:InputEventDispatcher;
        private var eventDispatcher:IEventDispatcher;

        public function InputEventDispatcher(target:IEventDispatcher = null){
            eventDispatcher = new EventDispatcher(target);
        }

        /** 获取FastReportEventDispatcher类的唯一实例 */
        public static function getInstance():InputEventDispatcher{
            if(!_inst){
                _inst = new InputEventDispatcher();
            }
            return _inst;
        }

        /** 添加事件侦听器函数 */
        public function addEventListener(type:String,listener:Function,useCapture:Boolean=false,pririty:int=0,useWeakReference:Boolean=true):void{
            eventDispatcher.addEventListener(type,listener,useCapture,pririty,useWeakReference);
        }

        /** 删除事件监听器函数 */
        public function removeEventListener(type:String,listener:Function,useCapture:Boolean=false,priority:int=0,useWeakReference:Boolean=true):void{
            eventDispatcher.removeEventListener(type,listener,useCapture);
        }

        /** 事件派发函数 */
        public function dispatchEvent(event:InputEvent):Boolean{
            return eventDispatcher.dispatchEvent(event);
        }

        /** 检查是否已经存在事件侦听器 */
        public function hasEventListener(type:String):Boolean{
            return eventDispatcher.hasEventListener(type);
        }

        /** 检查eventDispatcher 对象或其他任何数组是否注册了指定类型的事件侦听器 */
        public function willTrigger(type:String):Boolean{
            return eventDispatcher.willTrigger(type);
        }
    }
}

自定义一个类用来发送和监听事件，就可以实现在任意地方监听。