/// <summary>
/// All queue mutation within the AudioController must go through this routing method.
/// This method send the appropriate track-change messages if necessary.
/// </summary>
/// <param name="queueMutationFunction">An anonymous function that returns void.</param>
/// <exception cref="ArgumentNullException">if <paramref name="queueMutationFunction"/> is null.</exception>
private void MutateQueue(Action queueMutationFunction)
{
Contract.Requires <ArgumentNullException>(queueMutationFunction != null);
var storedTrack = new TrackEventArgs(CurrentUnique, TrackStreamOpenTimeUtc, Position);
queueMutationFunction();
OnCurrentTrackChanged(storedTrack);
}
/// <summary>
/// All queue mutation within the AudioController must go through this routing method.
/// This method send the appropriate track-change messages if necessary.
/// </summary>
/// <param name="queueMutationFunction">An anonymous function that returns a bool.</param>
/// <returns>The result of the anonymous function.</returns>
/// <exception cref="ArgumentNullException">if <paramref name="queueMutationFunction"/> is null.</exception>
private bool MutateQueue(Func <bool> queueMutationFunction)
{
Contract.Requires <ArgumentNullException>(queueMutationFunction != null);
var storedTrack = new TrackEventArgs(CurrentUnique, TrackStreamOpenTimeUtc, Position);
var result = queueMutationFunction();
OnCurrentTrackChanged(storedTrack);
return(result);
}
/// <summary>
/// Calls the <seealso cref="CurrentTrackChanged"/> event handler if it is non-null.
/// </summary>
/// <param name="oldTrackInfo">Information encapsulating the state of the previous track before the track changed.</param>
protected void OnCurrentTrackChanged(TrackEventArgs oldTrackInfo)
{
Contract.Requires(oldTrackInfo != null);
if (!oldTrackInfo.UniqueTrack.Equals(CurrentUnique))
{
if (oldTrackInfo.UniqueTrack.Track != null)
{
oldTrackInfo.UniqueTrack.Track.NotifyNowPlaying();
}
if (Current != null)
{
Current.NotifyNowPlaying();
Windows.Media.MediaControl.AlbumArt = Current.Artwork.Image;
Windows.Media.MediaControl.ArtistName = Current.Artist;
Windows.Media.MediaControl.TrackName = Current.Title;
}
else
{
Windows.Media.MediaControl.AlbumArt = null;
Windows.Media.MediaControl.ArtistName = string.Empty;
Windows.Media.MediaControl.TrackName = string.Empty;
}
EventHandler <TrackChangedEventArgs> h = CurrentTrackChanged;
if (h != null)
{
h(this, new TrackChangedEventArgs(oldTrackInfo, CurrentUnique));
}
UserMutationCount++;
OnPropertyChanged("Current");
}
}
/// <summary>
/// All queue mutation within the AudioController must go through this routing method.
/// This method send the appropriate track-change messages if necessary.
/// </summary>
/// <param name="queueMutationFunction">An anonymous function that returns void.</param>
/// <exception cref="ArgumentNullException">if <paramref name="queueMutationFunction"/> is null.</exception>
private void MutateQueue(Action queueMutationFunction)
{
Contract.Requires<ArgumentNullException>(queueMutationFunction != null);
var storedTrack = new TrackEventArgs(CurrentUnique, TrackStreamOpenTimeUtc, Position);
queueMutationFunction();
OnCurrentTrackChanged(storedTrack);
}
/// <summary>
/// All queue mutation within the AudioController must go through this routing method.
/// This method send the appropriate track-change messages if necessary.
/// </summary>
/// <param name="queueMutationFunction">An anonymous function that returns a bool.</param>
/// <returns>The result of the anonymous function.</returns>
/// <exception cref="ArgumentNullException">if <paramref name="queueMutationFunction"/> is null.</exception>
private bool MutateQueue(Func<bool> queueMutationFunction)
{
Contract.Requires<ArgumentNullException>(queueMutationFunction != null);
var storedTrack = new TrackEventArgs(CurrentUnique, TrackStreamOpenTimeUtc, Position);
var result = queueMutationFunction();
OnCurrentTrackChanged(storedTrack);
return result;
}
/// <summary>
/// Calls the <seealso cref="CurrentTrackChanged"/> event handler if it is non-null.
/// </summary>
/// <param name="oldTrackInfo">Information encapsulating the state of the previous track before the track changed.</param>
protected void OnCurrentTrackChanged(TrackEventArgs oldTrackInfo)
{
Contract.Requires(oldTrackInfo != null);
if (!oldTrackInfo.UniqueTrack.Equals(CurrentUnique))
{
if (oldTrackInfo.UniqueTrack.Track != null)
{
oldTrackInfo.UniqueTrack.Track.NotifyNowPlaying();
}
if (Current != null)
{
Current.NotifyNowPlaying();
Windows.Media.MediaControl.AlbumArt = Current.Artwork.Image;
Windows.Media.MediaControl.ArtistName = Current.Artist;
Windows.Media.MediaControl.TrackName = Current.Title;
}
else
{
Windows.Media.MediaControl.AlbumArt = null;
Windows.Media.MediaControl.ArtistName = string.Empty;
Windows.Media.MediaControl.TrackName = string.Empty;
}
EventHandler<TrackChangedEventArgs> h = CurrentTrackChanged;
if (h != null)
{
h(this, new TrackChangedEventArgs(oldTrackInfo, CurrentUnique));
}
UserMutationCount++;
OnPropertyChanged("Current");
}
}
/// <summary>
/// Creates a new <seealso cref="TrackChangedEventArgs"/>.
/// </summary>
/// <param name="oldTrack">The track that was playing before the track change.</param>
/// <param name="newTrack">The track that started playing after the track change.</param>
public TrackChangedEventArgs(TrackEventArgs oldTrack, UniqueTrack newTrack)
: base(oldTrack.UniqueTrack, oldTrack.StartTimeUtc, oldTrack.Position)
{
Contract.Requires(oldTrack != null);
_NewUniqueTrack = newTrack;
}
/// <summary>
/// Creates a new <seealso cref="TrackChangedEventArgs"/>.
/// </summary>
/// <param name="oldTrack">The track that was playing before the track change.</param>
/// <param name="newTrack">The track that started playing after the track change.</param>
public TrackChangedEventArgs(TrackEventArgs oldTrack, UniqueTrack newTrack)
: base(oldTrack.UniqueTrack, oldTrack.StartTimeUtc, oldTrack.Position)
{
Contract.Requires(oldTrack != null);
_NewUniqueTrack = newTrack;
}
private void AudioController_CurrentTrackFailed(object sender, TrackEventArgs e)
{
ShowMessageBar(e.Track != null ? string.Format(LocalizationManager.GetString("MainPage/AudioError/Text_F"), e.Track.Title) : LocalizationManager.GetString("MainPage/AudioError/Text"));
}
