MediaChangedEvent now hooked up to player component.

Aurora/Backend/Models/Media/BaseMedia.cs

@@ -31,6 +31,8 @@ namespace Aurora.Backend.Models.Media
 
         public abstract MediaTypeEnum MediaType { get; }
 
+        public abstract BaseMetadata Metadata { get; protected set; }
+
 
         /// <summary>
         /// Gets or sets the data stream that holds the song.

Aurora/Backend/Models/Media/LocalAudio.cs

@@ -14,7 +14,7 @@ namespace Aurora.Backend.Models.Media
         #region Properties
         public FileInfo File { get; private set; }
 
-        public AudioMetadata Metadata { get; private set; }
+        public override BaseMetadata Metadata { get; protected set; }
 
         public override MediaTypeEnum MediaType
         {

Aurora/Backend/Services/PlayerService/MediaChangedEvent.cs

@@ -0,0 +1,17 @@
+using System;
+using Aurora.Backend.Models.Media;
+
+namespace Aurora.Backend.Services.PlayerService
+{
+    public delegate void MediaChangedEventHandler(object source, MediaChangedEventArgs e);
+
+    public class MediaChangedEventArgs : EventArgs
+    {
+        public BaseMetadata NewMetadata { get; private set; }
+
+        public MediaChangedEventArgs(BaseMetadata metadata)
+        {
+            NewMetadata = metadata;
+        }
+    }
+}

Aurora/Backend/Services/PlayerService/PlaybackStateChangedEvent.cs

@@ -1,4 +1,5 @@
 using System;
+using Aurora.Backend.Models.Media;
 
 namespace Aurora.Backend.Services.PlayerService
 {

Aurora/Backend/Services/PlayerService/PlayerService.cs

@@ -22,6 +22,8 @@ namespace Aurora.Backend.Services.PlayerService
         /// </summary>
         public event PlaybackStateChangedEventHandler PlaybackStateChanged;
 
+        public event MediaChangedEventHandler MediaChanged;
+
         /// <summary>
         /// The state of playback
         /// </summary>
@@ -47,6 +49,8 @@ namespace Aurora.Backend.Services.PlayerService
             _mediaPlayer = new MediaPlayer(md);
             _mediaPlayer.Stopped += OnStopped;
             md.Dispose();
+
+            MediaChanged.Invoke(this, new MediaChangedEventArgs(_currentMedia.Metadata));
         }
 
         /// <summary>

Aurora/Frontend/Components/MediaPlayer/Player.xaml

@@ -14,7 +14,7 @@
             <StackLayout
                  Grid.Column="0">
                 <Label
-                     Text="{Binding SongName}"/>
+                     Text="{Binding SongTitle}"/>
                 <Label
                      Text="{Binding ArtistName}"/>
             </StackLayout>

Aurora/Frontend/Components/MediaPlayer/PlayerViewModel.cs

@@ -2,16 +2,20 @@
 using Xamarin.Forms;
 using Aurora.Frontend.Views;
 using Aurora.Backend.Services.PlayerService;
+using Aurora.Backend.Models.Media;
 
 namespace Aurora.Frontend.Components.MediaPlayer
 {
     public class PlayerViewModel : BaseViewModel
     {
         PlayerService _playerService;
+        BaseMetadata _metadata;
+
         public PlayerViewModel()
         {
             _playerService = PlayerService.Instance;
             _playerService.PlaybackStateChanged += OnPlaybackStateChanged;
+            _playerService.MediaChanged += OnMediaChanged;
 
             PlayCommand = new Command(OnPlayExecute, CanPlayExecute);
             PreviousCommand = new Command(OnPreviousExecute, CanPreviousExecute);
@@ -20,6 +24,7 @@ namespace Aurora.Frontend.Components.MediaPlayer
 
         ~PlayerViewModel()
         {
+            _playerService.PlaybackStateChanged -= OnPlaybackStateChanged;
 
         }
 
@@ -28,10 +33,43 @@ namespace Aurora.Frontend.Components.MediaPlayer
         public Command NextCommand { get; private set; }
         public Command PreviousCommand { get; private set; }
 
-
         public string PlayButtonText
         {
-            get { return PlayerService.Instance.PlaybackState == PlaybackState.Buffering ? "Play" : "Pause"; }
+            get { return _playerService.PlaybackState == PlaybackState.Buffering ? "Play" : "Pause"; }
+        }
+
+        /// <summary>
+        /// TODO keep player view generic between audio and video.
+        /// </summary>
+        /// <value></value>
+        public string ArtistName
+        {
+            get
+            {
+                if (_metadata == null)
+                {
+                    return "";
+                }
+                AudioMetadata metadata = _metadata as AudioMetadata;
+                return metadata.Artist;
+            }
+        }
+
+        /// <summary>
+        /// TODO keep player view generic between audio and video.
+        /// </summary>
+        /// <value></value>
+        public string SongTitle
+        {
+            get
+            {
+                if (_metadata == null)
+                {
+                    return "";
+                }
+                AudioMetadata metadata = _metadata as AudioMetadata;
+                return metadata.Title;
+            }
         }
 
         #endregion Public Properties
@@ -96,6 +134,11 @@ namespace Aurora.Frontend.Components.MediaPlayer
         #endregion public Methods
 
         #region EventHandlers
+        /// <summary>
+        /// PlayerService playback state changed event handler.
+        /// </summary>
+        /// <param name="sender">The sending object.</param>
+        /// <param name="args">Event arguments.</param>
         public void OnPlaybackStateChanged(object sender, PlaybackStateChangedEventArgs args)
         {
             OnPropertyChanged("PlayButtonText");
@@ -103,6 +146,18 @@ namespace Aurora.Frontend.Components.MediaPlayer
             NextCommand.ChangeCanExecute();
             PreviousCommand.ChangeCanExecute();
         }
+
+        /// <summary>
+        /// PlayerService media changed event handler.
+        /// </summary>
+        /// <param name="sender">The sending object.</param>
+        /// <param name="args">Event arguments.</param>
+        public void OnMediaChanged(object sender, MediaChangedEventArgs args)
+        {
+            _metadata = args.NewMetadata;
+            OnPropertyChanged("ArtistName");
+            OnPropertyChanged("SongTitle");
+        }
         #endregion EventHandlers
     }
 }