package
{
    import flash.display.DisplayObject;
    import flash.display.MovieClip;
    import flash.events.Event;
    import flash.events.ProgressEvent;
    import flash.events.Event;
    import flash.utils.getDefinitionByName;

    public class Preloader extends MovieClip
    {
        private var _app:DisplayObject;

        public function Preloader() {
            stop();
            addEventListener(Event.ADDED_TO_STAGE, onAddedToStage);
        }

        private function onAddedToStage(event:Event):void {
            addEventListener(Event.ENTER_FRAME, enterFrameHandler);
        }

        private function enterFrameHandler(evt:Event):void {
            if (loaderInfo.bytesLoaded == loaderInfo.bytesTotal) {
                initialize();
                removeEventListener(Event.ENTER_FRAME, enterFrameHandler);
            }
        }

        private function initialize():void {
            if (_app) return;

            nextFrame();
            var mainClass:Class = Class(getDefinitionByName("TestMain"));
            _app = new mainClass() as DisplayObject;
            addChild(_app as DisplayObject);
        }

    }

}