package net.xinterface.items
{
	import flash.display.MovieClip;
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.events.MouseEvent;
	import flash.media.Sound;

	public class ItemButton extends Sprite
	{
		public static const OVER:String = "over";
		public static const RELEASE:String = "release";
		public static const OUT:String = "out";
		public static const SELECTED:String = "selected";
		public static const UNSELECTED:String = "unselected";
		public static const ENABLED:String = "enabled";
		public static const DISABLED:String = "disabled";
		public static const NOSTATE:String = "nostate";
		
		private var id:String;
		
		protected var hit_mc:MovieClip;
		public var asset:MovieClip;
		
		private var volume:Number = 1;
		private var sClick:Sound;
		private var sOver:Sound;
		private var sOut:Sound;
		
		private var state:String;
		
		// constructor
		public function ItemButton(_asset:MovieClip, soundClick:Sound=null, soundOver:Sound=null, soundOut:Sound=null)
		{
			asset = _asset;
			addChild(asset);
			
			if(MovieClip(asset.hit_mc) != null)
			{
				hit_mc = MovieClip(asset.hit_mc);
				
			}else
			{
				hit_mc = new MovieClip;
				hit_mc.graphics.beginFill(0x000000,0);
				hit_mc.graphics.drawRect(0,0,asset.width, asset.height);
				
				asset.addChild(hit_mc);
			}
			
			hit_mc.buttonMode = true;
			sClick = soundClick;
			sOver = soundOver;
			sOut = soundOut;
			
			state = NOSTATE;
			
			Enable();
		}
		// Habilita el botón (se puede pulsar)
		public function Enable():void
		{
			hit_mc.enabled = true;
			hit_mc.mouseEnabled = true;
			hit_mc.addEventListener(MouseEvent.CLICK, Click);
			hit_mc.addEventListener(MouseEvent.MOUSE_OVER, Over);
			hit_mc.addEventListener(MouseEvent.MOUSE_OUT, Out);
			asset.alpha = 1;
			state = ENABLED;
		}
		// Deshabilita el botón ( no se puede pulsar )
		/** @param setAlpha true para bajar el alpha al deshabilitarlo, false para dejarlo tal cuál
		 * @param keepClick true para que el botón siga funcionando incluso al deshabilitarlo, false para un comportamiento normal (esto me ha servido el alguna ocasión
		 * */
		public function Disable(setAlpha:Boolean=true, keepClick:Boolean=false):void
		{
			hit_mc.enabled = false;
			//hit_mc.mouseChildren = false;
			hit_mc.mouseEnabled = false;
			
			if(keepClick==true) hit_mc.mouseEnabled = true;
			else hit_mc.removeEventListener(MouseEvent.CLICK, Click);

			hit_mc.removeEventListener(MouseEvent.MOUSE_OVER, Over);
			hit_mc.removeEventListener(MouseEvent.MOUSE_OUT, Out);
			
			if(setAlpha) SetDisableView();
			state = DISABLED;
		}
		protected function SetDisableView():void
		{
			asset.alpha = 0.3;
		}
		// Esto es público por si acaso queremos presionar un botón manualmente. "boton.Click(null);"
		public function Click(evt:MouseEvent=null):void
		{
			var event:Event = new Event(RELEASE);
			dispatchEvent(event);
			if(sClick!=null) sClick.play().soundTransform.volume = volume;
			state = RELEASE;
		}
		protected function Over(evt:MouseEvent=null):void
		{
			//trace("over");
			dispatchEvent(new Event(OVER));
			asset.removeEventListener(Event.ENTER_FRAME, TimelineBackard);
			asset.addEventListener(Event.ENTER_FRAME, TimelineFordward);
			if(sOver!=null) sOver.play().soundTransform.volume = volume;
			state = OVER;
		}
		protected function Out(evt:MouseEvent=null):void
		{
			//trace("out");
			dispatchEvent(new Event(OUT));
			asset.removeEventListener(Event.ENTER_FRAME, TimelineFordward);
			asset.addEventListener(Event.ENTER_FRAME, TimelineBackard);
			if(sOut!=null) sOut.play().soundTransform.volume = volume;
			state = OUT;
		}
		// Este método es perfecto para botoneras, al llamarlo, el botón de quedará en el estado "over", 
		// y no se podrá pulsar hasta después de llamar al método "Unselect();"
		public function Select():void
		{
			if(state == SELECTED) return;
			
			Disable(false);
			dispatchEvent(new Event(SELECTED));
			Over();
			state = SELECTED;
			//trace("selected");
		}
		// vuelve a dejar el botón como estaba
		public function Unselect():void
		{
			if(state == UNSELECTED) return;
			
			Enable();
			dispatchEvent(new Event(UNSELECTED));
			Out();
			state = UNSELECTED;
			//trace("unselected");
		}
		// Timeline
		// Hace correr la línea de tiempo del "asset" hasta el último frame
		private function TimelineFordward(evt:Event):void
		{
			asset.gotoAndStop(asset.currentFrame + 1);
			if(asset.currentFrame == asset.totalFrames) asset.removeEventListener(Event.ENTER_FRAME, TimelineFordward);
		}
		// Hace correr hacia el frame 1, la línea de tiempo del "asset"
		private function TimelineBackard(evt:Event):void
		{
			asset.gotoAndStop(asset.currentFrame - 1);
			if(asset.currentFrame == 1) asset.removeEventListener(Event.ENTER_FRAME, TimelineBackard);
		}
		
		// getters y setters
		public function get State():String
		{
			return state;
		}
		public function set Volume(value:Number):void
		{
			volume = value;
		}
		public function get Volume():Number
		{
			return volume;
		}
		public function get Id():String
		{
			return id;
		}
		public function set Id(pId:String):void
		{
			id = pId;
		}
	}
}