protected virtual void OnTracksRemoved(TracksEventArgs args)
{
PlaylistTrack.Update(this, removals: args.TrackIndices);
if (TracksRemoved != null)
{
TracksRemoved(this, args);
}
}
protected virtual void OnTracksMoved(TracksMovedEventArgs args)
{
PlaylistTrack.Update(this, moves: args.TrackIndices, movedTo: args.NewPosition);
if (TracksMoved != null)
{
TracksMoved(this, args);
}
}
protected virtual void OnTracksAdded(TracksAddedEventArgs args)
{
PlaylistTrack.Update(this, aditions: args.TrackIndices);
if (TracksAdded != null)
{
TracksAdded(this, args);
}
}
internal static void Delete(Playlist playlist, int position)
{
KeyGen key = new KeyGen(playlist, position);
lock (tracksLock)
{
PlaylistTrack track = tracks[key];
int count = track.RemRef();
if (count == 0)
{
tracks.Remove(key);
}
}
}
public override bool Equals(object obj)
{
if (obj == null)
{
return(false);
}
if (obj.GetType() == typeof(Track))
{
return(base.Equals(obj));
}
if (obj.GetType() != typeof(PlaylistTrack))
{
return(false);
}
PlaylistTrack pt = (PlaylistTrack)obj;
return(pt.playlist == this.playlist && pt.position == this.position);
}
protected override void OnDispose()
{
session.DisposeAll -= new SessionEventHandler(session_DisposeAll);
PlaylistTrack.UnregisterPlaylist(this);
if (!session.ProcExit)
{
lock (libspotify.Mutex)
{
if (registerCallbacks)
{
try { libspotify.sp_playlist_remove_callbacks(playlistPtr, callbacksPtr, IntPtr.Zero); }
finally { Marshal.FreeHGlobal(callbacksPtr); }
}
libspotify.sp_playlist_release(playlistPtr);
}
}
playlistPtr = IntPtr.Zero;
callbacksPtr = IntPtr.Zero;
}
internal bool GetTrackSeen(PlaylistTrack track)
{
lock (libspotify.Mutex)
return(libspotify.sp_playlist_track_seen(playlistPtr, track.position));
}
internal DateTime GetTrackCreationTime(PlaylistTrack track)
{
lock (libspotify.Mutex)
return(new DateTime(TimeSpan.FromSeconds(libspotify.sp_playlist_track_create_time(playlistPtr, track.position)).Ticks));
}
protected Playlist(Session session, IntPtr playlistPtr, bool registerCallbacks = true)
{
if (playlistPtr == IntPtr.Zero)
{
throw new ArgumentException("playlistPtr can't be zero.");
}
if (session == null)
{
throw new ArgumentNullException("Session can't be null.");
}
this.session = session;
this.playlistPtr = playlistPtr;
this.registerCallbacks = registerCallbacks;
if (registerCallbacks)
{
tracks_added = new tracks_added_cb(TracksAddedCallback);
tracks_removed = new tracks_removed_cb(TracksRemovedCallback);
tracks_moved = new tracks_moved_cd(TracksMovedCallback);
playlist_renamed = new playlist_renamed_cb(RenamedCallback);
playlist_state_changed = new playlist_state_changed_cb(StateChangedCallback);
playlist_update_in_progress = new playlist_update_in_progress_cb(UpdateInProgressCallback);
playlist_metadata_updated = new playlist_metadata_updated_cb(MetadataUpdatedCallback);
track_created_changed = new track_created_changed_cb(TrackCreatedChangedCallback);
track_seen_changed = new track_seen_changed_cb(TrackSeenChangedCallback);
description_changed = new description_changed_cb(DescriptionChangedCallback);
image_changed = new image_changed_cb(ImageChangedCallback);
sp_playlist_callbacks callbacks = new sp_playlist_callbacks
{
tracks_added = Marshal.GetFunctionPointerForDelegate(tracks_added),
tracks_removed = Marshal.GetFunctionPointerForDelegate(tracks_removed),
tracks_moved = Marshal.GetFunctionPointerForDelegate(tracks_moved),
playlist_renamed = Marshal.GetFunctionPointerForDelegate(playlist_renamed),
playlist_state_changed = Marshal.GetFunctionPointerForDelegate(playlist_state_changed),
playlist_update_in_progress = Marshal.GetFunctionPointerForDelegate(playlist_update_in_progress),
playlist_metadata_updated = Marshal.GetFunctionPointerForDelegate(playlist_metadata_updated),
track_created_changed = Marshal.GetFunctionPointerForDelegate(track_created_changed),
track_seen_changed = Marshal.GetFunctionPointerForDelegate(track_seen_changed),
description_changed = Marshal.GetFunctionPointerForDelegate(description_changed),
image_changed = Marshal.GetFunctionPointerForDelegate(image_changed)
};
callbacksPtr = Marshal.AllocHGlobal(Marshal.SizeOf(callbacks));
Marshal.StructureToPtr(callbacks, callbacksPtr, true);
}
lock (libspotify.Mutex)
{
libspotify.sp_playlist_add_ref(playlistPtr);
if (registerCallbacks)
{
libspotify.sp_playlist_add_callbacks(playlistPtr, callbacksPtr, IntPtr.Zero);
}
}
session.DisposeAll += new SessionEventHandler(session_DisposeAll);
tracks = new PlaylistTrackList(
() =>
{
IsAlive(true);
lock (libspotify.Mutex)
return(libspotify.sp_playlist_num_tracks(playlistPtr));
},
(index) =>
{
IsAlive(true);
lock (libspotify.Mutex)
return(PlaylistTrack.Get(session, this, libspotify.sp_playlist_track(playlistPtr, index), index));
},
(track, index) =>
{
IsAlive(true);
IntPtr trackArrayPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(IntPtr)));
IntPtr[] ptrArray = new[] { Track.GetPointer(track) };
try
{
Marshal.Copy(ptrArray, 0, trackArrayPtr, 1);
lock (libspotify.Mutex)
libspotify.sp_playlist_add_tracks(playlistPtr, trackArrayPtr, 1, index, session.sessionPtr);
}
finally
{
try { Marshal.FreeHGlobal(trackArrayPtr); }
catch
{ }
}
},
(index) =>
{
IsAlive(true);
lock (libspotify.Mutex)
libspotify.sp_playlist_remove_tracks(playlistPtr, new int[] { index }, 1);
},
() => false
);
PlaylistTrack.RegisterPlaylist(this);
}
protected override void OnDispose()
{
PlaylistTrack.Delete(((PlaylistTrack)track).Playlist, ((PlaylistTrack)track).Position);
track = null;
}
public PlaylistTrackWrapper(PlaylistTrack track)
: base(track)
{
}
internal static void Update(Playlist playlist, IEnumerable <int> moves = null, int movedTo = -1, IEnumerable <int> aditions = null, IEnumerable <int> removals = null)
{
Dictionary <int, int> moved = new Dictionary <int, int>();
List <int> newTracks = new List <int>();
List <int> toDel = new List <int>();
int oldCount = playlistLengths[playlist];
int count;
int deleted;
if (aditions != null)
{
count = aditions.Count();
for (int i = aditions.First(); i < oldCount; i++)
{
moved.Add(i, i + count);
}
foreach (int index in aditions)
{
newTracks.Add(index);
}
}
else if (removals != null)
{
deleted = 0;
for (int i = 0; i < oldCount; i++)
{
if (removals.Contains(i))
{
deleted++;
continue;
}
if (deleted > 0)
{
moved.Add(i, i - deleted);
}
}
}
else if (moves != null && movedTo != -1)
{
deleted = 0;
for (int i = 0; i < oldCount; i++)
{
if (moves.Contains(i))
{
deleted++;
continue;
}
if (deleted > 0)
{
moved.Add(i, i - deleted);
}
}
count = moves.Count();
for (int i = movedTo; i < oldCount; i++)
{
if (moved.ContainsKey(i))
{
moved[i] += count;
}
else
{
moved.Add(i, i + count);
}
}
int i1 = 0;
foreach (int index in moves)
{
if (moved.ContainsKey(index))
{
moved[index] = movedTo + (i1++);
}
else
{
moved.Add(index, movedTo + (i1++));
}
}
}
foreach (var itm in moved)
{
KeyGen kg = new KeyGen(playlist, itm.Key);
if (tracks.ContainsKey(kg))
{
PlaylistTrack track = tracks[kg];
tracks.Remove(kg);
track.position = itm.Value;
kg = new KeyGen(playlist, itm.Value);
tracks.Add(kg, track);
}
}
foreach (var itm in toDel)
{
KeyGen kg = new KeyGen(playlist, itm);
if (tracks.ContainsKey(kg))
{
PlaylistTrack track = tracks[kg];
track.Dispose();
tracks.Remove(kg);
}
}
}
public PlaylistTrackWrapper(PlaylistTrack track)
: base(track)
{
}