/*

  * Licensed under the MIT License

  * 

  * Copyright 2011 (c) Flávio Silva, flsilva.com

  *

  * Permission is hereby granted, free of charge, to any person

  * obtaining a copy of this software and associated documentation

  * files (the "Software"), to deal in the Software without

  * restriction, including without limitation the rights to use,

  * copy, modify, merge, publish, distribute, sublicense, and/or sell

  * copies of the Software, and to permit persons to whom the

  * Software is furnished to do so, subject to the following

  * conditions:

  *

  * The above copyright notice and this permission notice shall be

  * included in all copies or substantial portions of the Software.

  *

  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

  * OTHER DEALINGS IN THE SOFTWARE.

  * 

  * http://www.opensource.org/licenses/mit-license.php

  */

 package org.vostokframework.domain.loading.states.fileloader.adapters

 {

         import org.vostokframework.domain.loading.states.fileloader.IDataLoader;

         import org.vostokframework.domain.loading.states.fileloader.algorithms.events.FileLoadingAlgorithmMediaEvent;

         import flash.media.Video;

         import flash.net.NetStream;

         /**

          * description

          * 

          * @author Flávio Silva

          */

         public class AutoResizeNetStreamVideo extends DataLoaderBehavior

         {

                 /**

                  * description

                  * 

                  * @param loader

                  * @param request

                  * @param context

                  */

                 public function AutoResizeNetStreamVideo(wrappedDataLoader:IDataLoader, netStream:NetStream)

                 {

                         super(wrappedDataLoader);

                         if (!netStream) throw new ArgumentError("Argument <netStream> must not be null.");

                         addDataLoaderListener();

                 }

                 override protected function doDispose():void

                 {

                         removeDataLoaderListener();

                 }

                 private function addDataLoaderListener():void

                 {

                         wrappedDataLoader.addEventListener(FileLoadingAlgorithmMediaEvent.META_DATA, metadataHandler, false, int.MAX_VALUE, true);

                 }

                 private function metadataHandler(event:FileLoadingAlgorithmMediaEvent):void

                 {

                         var width:Number = event.metadata["width"];

                         var height:Number = event.metadata["height"];

                         if (width > 0 && height > 0)

                         {

                                 var video:Video = getData();

                                 video.width = width;

                                 video.height = height;

                         }

                         removeDataLoaderListener();

                 }

                 private function removeDataLoaderListener():void

                 {

                         wrappedDataLoader.removeEventListener(FileLoadingAlgorithmMediaEvent.META_DATA, metadataHandler, false);

                 }

         }

 }