package com.almirun.common.events {
	import flash.events.EventDispatcher;
	import flash.events.IEventDispatcher;
	import flash.events.Event;

	/**
	 * @author JoshM
	 */
	public class DisposingEventDispatcher extends EventDispatcher {
		
		private var disposableListeners:Array;
		
		public function DisposingEventDispatcher(
				target:IEventDispatcher = null) {
			super(target);
			disposableListeners = [];
		}
		
		public function addDisposableEventListener(type:String,
				listener:Function, useCapture:Boolean = false,
				priority:int = 0):void {
			addEventListener(type, listener, useCapture, priority, false);
			disposableListeners.push( {type:type, func:listener,
				useCapture:useCapture } );
		}
		
		override public function dispatchEvent(event:Event):Boolean {
			var success:Boolean = super.dispatchEvent(event);
			var listener:Object;

			while (null != (listener = disposableListeners.pop())) {
				trace("Removing a listener with type " + listener.type);
				removeEventListener(listener.type, listener.func,
					listener.useCapture);
			}
			
			return success;
		}
	}
}