////////////////////////////////////////////////////////////////////////////////
//
//  Licensed to the Apache Software Foundation (ASF) under one or more
//  contributor license agreements.  See the NOTICE file distributed with
//  this work for additional information regarding copyright ownership.
//  The ASF licenses this file to You under the Apache License, Version 2.0
//  (the "License"); you may not use this file except in compliance with
//  the License.  You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//  See the License for the specific language governing permissions and
//  limitations under the License.
//
////////////////////////////////////////////////////////////////////////////////
package mx.display
{
	import mx.core.FlexGlobals;
	import mx.core.UIComponent;
	import mx.utils.ByteArray;
	import mx.controls.Image;
	import org.apache.royale.net.URLRequest;
	import org.apache.royale.events.Event;

	public class Loader extends UIComponent
	{
		private var _contentLoaderInfo:LoaderInfo;
		private var _content:UIComponent;

		public function get contentLoaderInfo():LoaderInfo
		{
			if (!_contentLoaderInfo)
			{
				_contentLoaderInfo = new LoaderInfo(this);
			}
			return _contentLoaderInfo;
		}

		public function get content():UIComponent
		{
			if (!_content)
			{
				_content = new Image();
				_content.addEventListener(Event.COMPLETE, loadCompleteHandler)
			}
			return _content;
		}

		public function load(request:URLRequest, context:Object=null):void
		{
			if (!(content.parent))
			{
				_content.visible = content.includeInLayout = false;
				FlexGlobals.topLevelApplication.addElement(_content);
			}
			(_content as Image).source = request.url;
		}

		public function loadBytes(bytes:ByteArray):void
		{
			// TODO not implemented
		}

		private function loadCompleteHandler(event:Event):void
		{
			removeFromParent();
			addElement(_content);
			contentLoaderInfo.dispatchEvent(new Event(Event.COMPLETE));
		}

		private function removeFromParent():void
		{
			FlexGlobals.topLevelApplication.removeElement(_content);
			_content.visible = _content.includeInLayout = true;
		}
	}
}