public List <PlaylistMemento> getMementos(Playlist playlist)
{
return(mementos[playlists.IndexOf(playlist)]);
}
public PlaylistMemento(Playlist playlist)
{
this.songs = new List <Song>(playlist.getSongs());
this.name = new String(playlist.getName().ToCharArray());
}
public PlaylistMemento getMemento(Playlist playlist, int exactMemento)
{
int index = this.playlists.IndexOf(playlist);
return(mementos[index][exactMemento]);
}
public void AddPlaylist(Playlist newPlaylist)
{
playlists.Add(newPlaylist);
}