/// <summary>
/// Gets the iTunes object specified by an ObjectID.
/// </summary>
/// <param name="oid"></param>
/// <returns></returns>
public Playlist GetPlaylist(ObjectID oid)
{
return Invoke((Func<Playlist>)delegate
{
return new Playlist((IITPlaylist)itunes.GetITObjectByID(
oid.SourceID, oid.PlaylistID, oid.TrackID, oid.DatabaseID));
});
}
/// <summary>
/// Instantiate a new maintenance action only if the safe array describes a recognizable
/// activity pattern.
/// </summary>
/// <param name="safeArray"></param>
/// <returns></returns>
public static MaintenanceAction Create(object safeArray)
{
Array array = safeArray as Array;
ObjectIDCollection list = new ObjectIDCollection();
StringBuilder builder = new StringBuilder();
ObjectID oid;
// convert the safe array to a collection and construct the pattern map
int lower = array.GetLowerBound(0);
int upper = array.GetUpperBound(0);
for (int i = lower; i <= upper; i++)
{
oid = new ObjectID(
(int)array.GetValue(i, 0), // source
(int)array.GetValue(i, 1), // playlist
(int)array.GetValue(i, 2), // trackid
(int)array.GetValue(i, 3)); // databaseid
list.Add(oid);
if (oid.IsPlaylist)
{
builder.Append("P");
}
else if (oid.IsSource)
{
builder.Append("S");
}
else if (oid.IsTrack)
{
builder.Append("T");
}
else
{
builder.Append("X");
}
}
// recognize pattern to instantiate new MaintenanceAction
string map = builder.ToString();
if (Regex.IsMatch(map, AddPlaylistPattern))
{
return(new MaintenanceAction(ActionType.AddPlaylist, list));
}
else if (Regex.IsMatch(map, AddTracksPattern))
{
return(new MaintenanceAction(ActionType.AddTracksToPlaylist, list));
}
else if (Regex.IsMatch(map, RemovePlaylistPattern))
{
return(new MaintenanceAction(ActionType.RemovePlaylist, list));
}
else if (Regex.IsMatch(map, RemoveTracksPattern))
{
return(new MaintenanceAction(ActionType.RemoveTracksFromPlaylist, list));
}
// Not a recognizable pattern, return null
list.Clear();
return(null);
}
/// <summary>
/// Gets the persisten ID of the iTunes object specified by an ObjectID.
/// </summary>
/// <param name="itunes"></param>
/// <param name="oid"></param>
/// <returns></returns>
public PersistentID GetPersistentID(ObjectID oid)
{
return Invoke((Func<PersistentID>)delegate
{
IITObject obj = itunes.GetITObjectByID(
oid.SourceID, oid.PlaylistID, oid.TrackID, oid.DatabaseID);
if (obj == null)
{
return PersistentID.Empty;
}
PersistentID persistentID = GetPersistentID(obj);
Release(obj);
return persistentID;
});
}
/// <summary>
/// Instantiate a new maintenance action only if the safe array describes a recognizable
/// activity pattern.
/// </summary>
/// <param name="safeArray"></param>
/// <returns></returns>
public static MaintenanceAction Create(object safeArray)
{
Array array = safeArray as Array;
ObjectIDCollection list = new ObjectIDCollection();
StringBuilder builder = new StringBuilder();
ObjectID oid;
// convert the safe array to a collection and construct the pattern map
int lower = array.GetLowerBound(0);
int upper = array.GetUpperBound(0);
for (int i = lower; i <= upper; i++)
{
oid = new ObjectID(
(int)array.GetValue(i, 0), // source
(int)array.GetValue(i, 1), // playlist
(int)array.GetValue(i, 2), // trackid
(int)array.GetValue(i, 3)); // databaseid
list.Add(oid);
if (oid.IsPlaylist)
{
builder.Append("P");
}
else if (oid.IsSource)
{
builder.Append("S");
}
else if (oid.IsTrack)
{
builder.Append("T");
}
else
{
builder.Append("X");
}
}
// recognize pattern to instantiate new MaintenanceAction
string map = builder.ToString();
if (Regex.IsMatch(map, AddPlaylistPattern))
{
return new MaintenanceAction(ActionType.AddPlaylist, list);
}
else if (Regex.IsMatch(map, AddTracksPattern))
{
return new MaintenanceAction(ActionType.AddTracksToPlaylist, list);
}
else if (Regex.IsMatch(map, RemovePlaylistPattern))
{
return new MaintenanceAction(ActionType.RemovePlaylist, list);
}
else if (Regex.IsMatch(map, RemoveTracksPattern))
{
return new MaintenanceAction(ActionType.RemoveTracksFromPlaylist, list);
}
// Not a recognizable pattern, return null
list.Clear();
return null;
}