public PlaylistViewModel(Playlist playlist)
{
_playlist = playlist ?? throw new ArgumentNullException();
_itemsProxy = new VMCollection <PlaylistItem, PlaylistItemViewModel>(playlist.Items, x => new PlaylistItemViewModel(x));
_itemsProxy.CollectionChanged += (object o, NotifyCollectionChangedEventArgs e) => UnsavedChanges = true;
_unsavedChanges = false;
}
public PlaylistViewModel()
{
_playlist = new Playlist();
_itemsProxy = new VMCollection <PlaylistItem, PlaylistItemViewModel>(_playlist.Items, x => new PlaylistItemViewModel(x));
_itemsProxy.CollectionChanged += (object o, NotifyCollectionChangedEventArgs e) => UnsavedChanges = true;
_unsavedChanges = false;
}
