package  {
	import flash.events.Event;
	import flash.events.EventDispatcher;
	
	public class PollableBaseRegistry extends BaseRegistry implements IPollableRegistry {

		private var dispatcher:EventDispatcher;
		private var pollFunction:Function;
		
		private static const REGISTRY_UPDATE = "registry_update";
		private static const CYCLE_COMPLETE = "cycle_complete";

		public function PollableBaseRegistry(pollFunction:Function = null) {
			this.dispatcher = new EventDispatcher();
			this.pollFunction = pollFunction || this.commit;
		}
		
		public function getPollableFunction():Function {
			return this.pollFunction;
		}
		
		public override function commit():void {
			if(!Util.objectIsEmpty(this.stage)) {
				this.head = Util.extend(this.head, this.stage);
				this.lastUpdated = Util.toPropertyChains(this.stage);
				this.stage = {};
				this.dispatchUpdateEvent();
			}
			
			this.dispatchCycleCompleteEvent();
		}
		
		public function dispatchUpdateEvent():void {
			this.dispatchEvent(new PollEvent(this.getUpdateEventType(), this));
		}
		
		public function getUpdateEventType():String {
			return REGISTRY_UPDATE;
		}
		
		public function dispatchCycleCompleteEvent():void {
			this.dispatchEvent(new PollEvent(this.getCycleCompleteEventType(), this));
		}
		
		public function getCycleCompleteEventType():String {
			return CYCLE_COMPLETE;
		}
		
		//Wrappers around EventDispatcher
		public function addEventListener(type:String, listener:Function, useCapture:Boolean=false, priority:int=0, useWeakReference:Boolean=false):void {
			this.dispatcher.addEventListener(type, listener, useCapture, priority, useWeakReference);
		}
		public function dispatchEvent(event:Event):Boolean {
			return this.dispatcher.dispatchEvent(event);
		}
		public function hasEventListener(type:String):Boolean {
			return this.dispatcher.hasEventListener(type);
		}
		public function removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void {
			this.dispatcher.removeEventListener(type, listener, useCapture);
		}
		public function willTrigger(type:String):Boolean {
			return this.dispatcher.willTrigger(type);
		}
		
		public function whoAmI() {
			trace("poll base");
		}

	}
	
}