internal PlaylistContainerEventArgs(Playlist playlist, int position, int newPosition, Playlist[] currentLists)
{
this.playlist = playlist;
this.position = position;
this.newPosition = newPosition;
this.currentLists = currentLists;
}
internal PlaylistContainer(IntPtr containerPtr, Session owningSession)
{
if(containerPtr == IntPtr.Zero)
throw new ArgumentException("containerPtr can not be zero");
lock(libspotify.Mutex)
{
if(containers.ContainsKey(containerPtr))
throw new Exception("libspotify-sharp internal error, creating playlist container for the second time");
libspotify.sp_playlistcontainer_add_callbacks(containerPtr, callbacksPtr, IntPtr.Zero);
this.owningSession = owningSession;
this.containerPtr = containerPtr;
containers.Add(containerPtr, this);
for(int i = 0; i < PlaylistCount; i++)
{
IntPtr playlistPtr = IntPtr.Zero;
playlistPtr = libspotify.sp_playlistcontainer_playlist(containerPtr, i);
Playlist p = new Playlist(playlistPtr, owningSession);
playlists.Add(p);
playlistIndexByPtr.Add(playlistPtr, i);
}
}
}
private static void PlaylistAddedCallback(IntPtr containerPtr, IntPtr playlistPtr, int position, IntPtr userDataPtr)
{
PlaylistContainer pc = GetContainer(containerPtr);
if(pc != null)
{
Playlist pl;
Playlist[] currentLists;
lock(libspotify.Mutex)
{
pl = new Playlist(playlistPtr, pc.owningSession);
pc.playlists.Insert(position, pl);
pc.playlistIndexByPtr[playlistPtr] = position;
currentLists = pc.CurrentLists;
}
pc.owningSession.EnqueueEventWorkItem(new EventWorkItem(pc.OnPlaylistAdded,
new object[] {pc, new PlaylistContainerEventArgs(pl, position, -1, currentLists) }));
}
}
internal sp_error RemovePlaylist(Playlist playlist)
{
CheckDisposed(true);
sp_error result = sp_error.INVALID_INDATA;
int index = -1;
lock(libspotify.Mutex)
{
if(playlistIndexByPtr.TryGetValue(playlist.playlistPtr, out index))
{
if(!playlist.playlistPtr.Equals(playlists[index].playlistPtr))
throw new Exception("libspotify-sharp internal error, playlist position and pointer is inconsistent on remove");
libspotify.sp_playlistcontainer_remove_playlist(containerPtr, index);
}
}
return result;
}
public static Link FromPlaylist(Playlist playlist)
{
ThrowHelper.ThrowIfNull(playlist, "playlist");
return(new Link(LibSpotify.sp_link_create_from_playlist_r(playlist.Handle)));
}
/// <summary>
/// Checks whether the playlist is fully loaded. That is, if the playlist and
/// all the containing tracks are loaded.
/// </summary>
/// <param name="playlist">The playlist to check</param>
/// <returns>True if the playlist and all tracks in the playlist are loaded and the playlist does not have any pending changes. Otherwise false.</returns>
public static bool IsFullyLoaded(this Playlist playlist)
{
return(playlist.IsLoaded && !playlist.HasPendingChanges && playlist.AllTracksLoaded());
}
public static bool IsFullyReady(this Playlist playlist)
{
return(playlist.IsLoaded && playlist.AllTracksReady());
}