package cj.utils {

	import flash.display.Sprite;
	import flash.display.MovieClip;
	import flash.display.Loader;
	import flash.display.Bitmap;
	import flash.display.Shape;
	import flash.media.Video;
	import flash.display.DisplayObjectContainer;

	// optional
	import com.greensock.TweenLite;

	// this class acts as a recursive cleaner and can be helpful when advanced cleanup is necessary
    public final class Cleaner {

		// passes every child through the clean function
		private static function removeIt(obj:Object):void {

			if(obj is DisplayObjectContainer) {

				var it:Object;

				while(obj.numChildren) {

					it = obj.getChildAt(0);
					obj.removeChild(it);

					clean(it);

				}
			}
		}

		// finds what the object is and performs specific cleanup
		public static function clean(obj:Object):void {

			TweenLite.killTweensOf(obj);

			if(obj is MovieClip) {

				obj.stop();
				removeIt(obj);

			}
			else if(obj is Sprite) {

				removeIt(obj);

			}
			else if(obj is Bitmap) {

				obj.bitmapData.dispose();

			}
			else if(obj is Loader) {

				if(obj.content) {

					removeIt(obj.content);
					obj.unloadAndStop();

				}

				try {
					obj.close();
				}
				catch(event:*) {};

			}
			else if(obj is Shape) {

				obj.graphics.clear();

			}
			else if(obj is Video) {

				obj.clear();

			}

		}

    }

}