public static void AddRangeTracks(this IITUserPlaylist self, params IITTrack[] tracks)
{
ArgumentValidator.Validate(self, tracks);
foreach (IITTrack track in tracks)
{
self.AddTrack(track);
}
}
public void AddToPlaylist(IITUserPlaylist pl, params SamTrack[] sortable_tracks)
{
Array.Sort(sortable_tracks);
foreach (var t in sortable_tracks)
{
object track = t._Track;
pl.AddTrack(ref track);
}
}
public static void AddTrackToPlaylistByPersistentId(this iTunesApp iTunes, IITUserPlaylist playlist, long id)
{
var track = iTunes.GetTrackByPersistentId(id);
if (track != null)
{
playlist.AddTrack(track);
Marshal.ReleaseComObject(track);
}
}
public static IITUserPlaylist ShufflePlayList(IITUserPlaylist playlist)
{
IITTrackCollection tracks = playlist.Tracks;
Random rndm = new Random((int)DateTime.Now.Ticks);
int nTracks = tracks.Count;
// Generate shuffled track order
int[] shuffle = new int[nTracks];
for (int n = 0; n < nTracks; n++)
{
shuffle[n] = n + 1;
}
for (int n = 0; n < nTracks; n++)
{
int i1 = rndm.Next(nTracks);
int i2 = rndm.Next(nTracks);
int t = shuffle[i1];
shuffle[i1] = shuffle[i2];
shuffle[i2] = t;
}
// Create temporary playlist
string plName = playlist.Name;
string tplName = string.Format("{0}_shfl", plName);
IITUserPlaylist parent = playlist.get_Parent();
IITUserPlaylist pl1 = (parent == null) ? App.iTunes.CreatePlaylist(tplName) as IITUserPlaylist : parent.CreatePlaylist(tplName) as IITUserPlaylist;
// populate playlist with shuffled track order
for (int n = 0; n < nTracks; n++)
{
IITTrack trk = tracks[shuffle[n]];
pl1.AddTrack(trk);
}
// delete original playlist
playlist.Delete();
// rename new playlist to original name
pl1.Name = plName;
// Retuen new playlist so tree can be updated.
return(pl1);
}
