void HandleSongsCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
NotifyPropertyChanged(Properties.LengthInfo);
if (!Songs.IsRootChanging)
{
if (e.Action == NotifyCollectionChangedAction.Remove)
{
oldIndex = e.OldStartingIndex;
}
else if (e.Action == NotifyCollectionChangedAction.Add)
{
int newIndex = e.NewStartingIndex;
Songs.IsEndChanging = true;
rootModel.MoveSong(oldIndex, newIndex);
Songs.IsEndChanging = false;
}
}
QueueAllSongs.RaiseExecuteChanged();
PlayAllSongs.RaiseExecuteChanged();
ShuffleAllSongs.RaiseExecuteChanged();
}
private void HandleAllSongsCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
if (e.Action == NotifyCollectionChangedAction.Reset)
{
foreach (SongViewModel oldSongViewModel in FlatSongCollection)
{
oldSongViewModel.Album.Songs.Remove(oldSongViewModel);
oldSongViewModel.Artist.Songs.Remove(oldSongViewModel);
SongCollection.Remove(oldSongViewModel, oldSongViewModel.SortName);
FlatSongCollection.Remove(oldSongViewModel);
SongLookupMap.Remove(oldSongViewModel.SongId);
}
}
else
{
if (e.OldItems != null)
{
foreach (SongModel oldSong in e.OldItems)
{
SongViewModel oldSongViewModel = LookupSong(oldSong);
SongCollection.Remove(oldSongViewModel, oldSongViewModel.SortName);
FlatSongCollection.Remove(oldSongViewModel);
SongLookupMap.Remove(oldSongViewModel.SongId);
oldSongViewModel.Album.Songs.Remove(oldSongViewModel);
oldSongViewModel.Artist.Songs.Remove(oldSongViewModel);
}
}
if (e.NewItems != null)
{
foreach (SongModel newSong in e.NewItems)
{
LookupSong(newSong);
}
}
}
if (LibraryLoaded)
{
NotifyPropertyChanged(Properties.IsEmpty);
ShuffleAllSongs.RaiseExecuteChanged();
}
}