source: trunk/fl5/src/com/longtailvideo/jwplayer/model/Model.as @ 628

package com.longtailvideo.jwplayer.model {
        import com.longtailvideo.jwplayer.events.GlobalEventDispatcher;
        import com.longtailvideo.jwplayer.events.MediaEvent;
        import com.longtailvideo.jwplayer.events.PlayerEvent;
        import com.longtailvideo.jwplayer.events.PlayerStateEvent;
        import com.longtailvideo.jwplayer.media.MediaProvider;
        import com.longtailvideo.jwplayer.media.HTTPMediaProvider;
        import com.longtailvideo.jwplayer.media.ImageMediaProvider;
        import com.longtailvideo.jwplayer.media.RTMPMediaProvider;
        import com.longtailvideo.jwplayer.media.SoundMediaProvider;
        import com.longtailvideo.jwplayer.media.VideoMediaProvider;
        import com.longtailvideo.jwplayer.media.YouTubeMediaProvider;
        import com.longtailvideo.jwplayer.player.PlayerState;
        
        import flash.events.Event;

        /**
         * Fired when a portion of the current media has been loaded into the buffer.
         *
         * @eventType com.longtailvideo.jwplayer.events.MediaEvent.JWPLAYER_MEDIA_BUFFER
         */
        [Event(name="jwplayerMediaBuffer", type="com.longtailvideo.jwplayer.events.MediaEvent")]
        /**
         * Fired when the buffer is full.
         *
         * @eventType com.longtailvideo.jwplayer.events.MediaEvent.JWPLAYER_MEDIA_BUFFER_FULL
         */
        [Event(name="jwplayerMediaBufferFull", type="com.longtailvideo.jwplayer.events.MediaEvent")]
        /**
         * Fired if an error occurs in the course of media playback.
         *
         * @eventType com.longtailvideo.jwplayer.events.MediaEvent.JWPLAYER_MEDIA_ERROR
         */
        [Event(name="jwplayerMediaError", type="com.longtailvideo.jwplayer.events.MediaEvent")]
        /**
         * Fired after the MediaProvider has loaded an item into memory.
         *
         * @eventType com.longtailvideo.jwplayer.events.MediaEvent.JWPLAYER_MEDIA_LOADED
         */
        [Event(name="jwplayerMediaLoaded", type="com.longtailvideo.jwplayer.events.MediaEvent")]
        /**
         * Sent after a load() command has completed
         * 
         * @eventType com.longtailvideo.jwplayer.events.MediaEvent.JWPLAYER_MEDIA_TIME
         */
        [Event(name="jwplayerMediaTime", type="com.longtailvideo.jwplayer.events.MediaEvent")]
        /**
         * Sends the position and duration of the currently playing media
         * 
         * @eventType com.longtailvideo.jwplayer.events.MediaEvent.JWPLAYER_MEDIA_VOLUME
         */
        [Event(name="jwplayerMediaVolume", type="com.longtailvideo.jwplayer.events.MediaEvent")]
        /**
         * Fired when the currently playing media has completed its playback
         * 
         * @eventType com.longtailvideo.jwplayer.events.MediaEvent.JWPLAYER_MEDIA_COMPLETE
         */
        [Event(name="jwplayerMediaComplete", type="com.longtailvideo.jwplayer.events.MediaEvent")]
        /**
         * Sent when the playback state has changed.
         * 
         * @eventType com.longtailvideo.jwplayer.events.PlayerStateEvent.JWPLAYER_PLAYER_STATE
         */
        [Event(name="jwplayerPlayerState", type="com.longtailvideo.jwplayer.events.PlayerStateEvent")]
        /**
         * Fired if an error has occurred in the model.
         * 
         * @eventType com.longtailvideo.jwplayer.events.PlayerEvent.JWPLAYER_ERROR
         */
        [Event(name="jwplayerError", type = "com.longtailvideo.jwplayer.events.PlayerEvent")]

        /**
         * @author Pablo Schklowsky
         */
        public class Model extends GlobalEventDispatcher {
                private var _config:PlayerConfig;
                private var _playlist:IPlaylist;

                private var _fullscreen:Boolean = false;

                private var _currentMedia:MediaProvider;

                private var _mediaSources:Object;
                
                /** Constructor **/
                public function Model() {
                        _playlist = new Playlist();
                        _config = new PlayerConfig();
                        _mediaSources = {};
                        //TODO: Set initial mute state based on user configuration
                }

                /** The player config object **/
                public function get config():PlayerConfig {
                        return _config;
                }

                public function set config(conf:PlayerConfig):void {
                        _config = conf;
                }

                /** The currently loaded MediaProvider **/
                public function get media():MediaProvider {
                        return _currentMedia;
                }

                /**
                 * The current player state
                 */
                public function get state():String {
                        return _currentMedia ? _currentMedia.state : PlayerState.IDLE;
                }

                /**
                 * The loaded playlist
                 */
                public function get playlist():IPlaylist {
                        return _playlist;
                }

                /** The current fullscreen state of the player **/
                public function get fullscreen():Boolean {
                        return _config.fullscreen;
                }

                public function set fullscreen(b:Boolean):void {
                        _config.fullscreen = b;
                }

                /** The current mute state of the player **/
                public function get mute():Boolean {
                        return _config.mute;
                }

                public function set mute(b:Boolean):void {
                        _config.mute = b;
                        _currentMedia.mute(b);
                }

                public function setupMediaProviders():void {
                        setMediaProvider('default', new MediaProvider());
                        setMediaProvider('video', new VideoMediaProvider());
                        setMediaProvider('http', new HTTPMediaProvider());
                        setMediaProvider('rtmp', new RTMPMediaProvider());
                        setMediaProvider('sound', new SoundMediaProvider());
                        setMediaProvider('image', new ImageMediaProvider());
                        setMediaProvider('youtube', new YouTubeMediaProvider());

                        setActiveMediaProvider('default');
                }

                /**
                 * Whether the Model has a MediaProvider handler for a given type.
                 */
                public function hasMediaProvider(type:String):Boolean {
                        return (_mediaSources[url2type(type)] is MediaProvider);
                }

                /**
                 * Add a MediaProvider to the list of available sources.
                 */
                public function setMediaProvider(type:String, provider:MediaProvider):void {
                        if (!hasMediaProvider(type)) {
                                _mediaSources[url2type(type)] = provider;
                                provider.initializeMediaProvider(config);
                        }
                }

                public function setActiveMediaProvider(type:String):Boolean {
                        if (!hasMediaProvider(type))
                                type = "video";

                        var newMedia:MediaProvider = _mediaSources[url2type(type)] as MediaProvider;

                        if (_currentMedia != newMedia) {
                                if (_currentMedia) {
                                        _currentMedia.stop();
                                        _currentMedia.removeGlobalListener(forwardEvents);
                                }
                                newMedia.addGlobalListener(forwardEvents);
                                _currentMedia = newMedia;
                        }

                        return true;
                }

                
                private function forwardEvents(evt:Event):void {
                        if (evt is PlayerEvent) {
                                if (evt.type == MediaEvent.JWPLAYER_MEDIA_ERROR) {
                                        // Translate media error into player error.
                                        dispatchEvent(new PlayerEvent(PlayerEvent.JWPLAYER_ERROR, (evt as MediaEvent).message));
                                } else {
                                        dispatchEvent(evt);
                                }
                        }
                }

                /** e.g. http://providers.longtailvideo.com/5/myProvider.swf --> myprovider **/
                private function url2type(type:String):String {
                        return type.substring(type.lastIndexOf("/") + 1, type.length).replace(".swf", "").toLowerCase();
                }

        }
}