/// <summary>
/// Handles user input and programmatic changes for viewed songs and selected song
/// </summary>
/// <param name="sender"></param>
/// <param name="args">Input0: CurrentPlaylist.AllSongs, Input1: CurrentPlaylist.CurrentSong, Input2: CurrentPlaylist.WannaSong, Input3: lbxSongs.SelectedIndex</param>
/// <returns>The list of Songs to view on UI.</returns>
private object MicCurrentSongIndex_ConvertRef(object sender, MultiplesInputsConvert4EventArgs args)
{
if (args.Input0 == null)
{
args.Input3 = -1;
return(null);
}
if (args.ChangedValueIndex == 2)
{
return(args.Input0);
}
IEnumerable <Song> allSongs = (IEnumerable <Song>)args.Input0;
Song?currentSong = (Song?)args.Input1;
int index = (int)args.Input3;
if (args.ChangedValueIndex == 3 && index != -1)
{
args.Input2 = RequestSong.Start(allSongs.ElementAt(index));
}
else if (!currentSong.HasValue)
{
args.Input3 = -1;
}
else
{
args.Input3 = allSongs.IndexOf(currentSong.Value);
}
return(allSongs);
}
private static void CheckCurrentSong(IPlaylist playlist)
{
if (playlist == null)
{
return;
}
if (playlist.Songs == null || playlist.Songs.Length == 0)
{
playlist.WannaSong = null;
}
else if (!playlist.WannaSong.HasValue || !playlist.Songs.Contains(playlist.WannaSong.Value.Song))
{
playlist.WannaSong = RequestSong.Start(playlist.Songs.First());
}
}
private object MicCurrentSongIndex_ConvertRef(Song?currentSong, ref RequestSong?wannaSong,
IEnumerable <Song> allSongs, IEnumerable <Song> searchSongs, bool isSearching, ref int lbxIndex, int changedInput)
{
IEnumerable <Song> songs;
IPlaylist currentPlaylist = viewModel.AudioServiceUI?.CurrentPlaylist;
bool isCurrentPlaylistSourcePlaylist = currentPlaylist is ISourcePlaylist;
if (!isSearching)
{
songs = allSongs;
}
else if (isCurrentPlaylistSourcePlaylist)
{
songs = searchSongs;
}
else
{
songs = searchSongs.Except(allSongs);
}
if (changedInput == 6 && lbxIndex != -1 && (isSearching || isChangingSelectedSongIndex))
{
;
}
else if (changedInput == 6 && lbxIndex != -1 && allSongs.Contains(songs.ElementAt(lbxIndex)))
{
wannaSong = RequestSong.Start(songs.ElementAt(lbxIndex));
}
else if (!currentSong.HasValue)
{
lbxIndex = -1;
}
else if (songs.Contains(currentSong.Value))
{
lbxIndex = songs.IndexOf(currentSong.Value);
}
else if (songs.Any())
{
lbxIndex = 0;
}
else
{
lbxIndex = -1;
}
return(songs);
}
public static void AddSongsToFirstPlaylist(this IAudioService service, IEnumerable <Song> songs,
bool prepend, IInvokeDispatcherHelper helper)
{
songs = songs as Song[] ?? songs.ToArray();
if (!songs.Any())
{
return;
}
IPlaylist currentPlaylist = service.CurrentPlaylist;
Song? currentSong = currentPlaylist?.CurrentSong;
if (service.Playlists.Count > 0)
{
IPlaylist playlist = service.Playlists[0];
if (playlist.ID == currentPlaylist?.ID)
{
if (prepend)
{
playlist.Songs = songs.Concat(playlist.Songs).Distinct().ToArray();
playlist.WannaSong = RequestSong.Start(songs.First());
}
else
{
playlist.Songs = playlist.Songs.Concat(songs).Distinct().ToArray();
}
}
else
{
if (prepend || !currentSong.HasValue)
{
playlist.Songs = songs.Distinct().ToArray();
playlist.WannaSong = RequestSong.Start(songs.First());
playlist.Duration = currentPlaylist.Duration;
playlist.Position = currentPlaylist.Position;
service.CurrentPlaylist = playlist;
}
else
{
playlist.Songs = songs.Insert(0, currentSong.Value).Distinct().ToArray();
playlist.WannaSong = RequestSong.Get(currentSong.Value, null, currentPlaylist.Duration);
service.CurrentPlaylist = playlist;
currentPlaylist.CurrentSong = currentPlaylist.Songs.Cast <Song?>()
.NextOrDefault(currentSong).next;
currentPlaylist.Position = TimeSpan.Zero;
currentPlaylist.WannaSong = RequestSong.Start(currentPlaylist.CurrentSong);
}
}
}
else
{
IPlaylist playlist = new Playlist(helper)
{
Name = "Custom",
Loop = LoopType.Next,
Shuffle = OrderType.Custom
};
if (prepend || !currentSong.HasValue)
{
playlist.Songs = songs.ToArray();
playlist.WannaSong = RequestSong.Start(songs.First());
playlist.Duration = currentPlaylist.Duration;
playlist.Position = currentPlaylist.Position;
service.Playlists.Add(playlist);
service.CurrentPlaylist = playlist;
}
else
{
playlist.Songs = songs.Insert(0, currentSong.Value).ToArray();
playlist.WannaSong = RequestSong.Get(currentSong.Value, null, currentPlaylist.Duration);
service.Playlists.Add(playlist);
service.CurrentPlaylist = playlist;
currentPlaylist.CurrentSong = currentPlaylist.Songs.Cast <Song?>()
.NextOrDefault(currentSong).next;
currentPlaylist.Position = TimeSpan.Zero;
currentPlaylist.WannaSong = RequestSong.Start(currentPlaylist.CurrentSong);
}
}
}
