//========================================================================================
// Methods
//========================================================================================
#region Handlers
/// <summary>
/// Handle iTunes database changes including adding a playlist, removing a playlist,
/// adding a track to playlist, and removing a track from a playlist.
/// </summary>
/// <param name="deletedObjectIDs">
/// A two-dimensional safe-array specifying the object IDs of each deleted object.
/// </param>
/// <param name="changedObjectIDs">
/// A two-dimensional safe-array specifying the object IDs of each changed object.
/// </param>
/// <remarks>
/// For the purposes of maintaining our in-memory catalog, we know that these
/// operations result in very specific patterns that we can recognize in each
/// safe-array. If we find a pattern match then we can continue processing...
/// </remarks>
private void DoDatabaseChanged(object deletedObjectIDs, object changedObjectIDs)
{
// *** This handler blocks iTunes until complete so leave as quickly as possible!
// I've yet to see both deleted and changed requests at the same time so we can
// assume this is always true... check for changes first since additions and edits
// are most likely more probable, then check for deletions
MaintenanceAction action = MaintenanceAction.Create(changedObjectIDs);
if (action != null)
{
librarian.MaintainLibrary(action);
}
else
{
action = MaintenanceAction.Create(deletedObjectIDs);
if (action != null)
{
librarian.MaintainLibrary(action);
}
}
}
