public void MoveSort(int amount)
{
_lastSongHash = SongList[SelectedSongIndex].GetHashCode();
var current = (int)SongSortMode + amount;
const int COUNT = (int)SongSortMode.Count;
if (current < 0)
{
current += COUNT;
}
if (current >= COUNT)
{
current -= COUNT;
}
SongSortMode = (SongSortMode)current;
CreateBookmarkMenu();
SelectedSongIndex = SongList.IndexOf(GetByHashCode(_lastSongHash));
SetBookmark(SelectedSongIndex);
}
