public void EmptyPosition(int songOrder)
{
var plSong = PLAYLIST_SONGS.FirstOrDefault(i => i.ORDER == songOrder);
if (plSong != null)
{
ShiftSongDown(plSong);
}
}
private void ShiftSongDown(PLAYLIST_SONG plSong)
{
var songInTargetPosition = PLAYLIST_SONGS.FirstOrDefault(i => i.ORDER == plSong.ORDER + 1);
if (songInTargetPosition != null)
{
MoveSongDown(songInTargetPosition);
}
plSong.ORDER = plSong.ORDER + 1;
}
public void MoveSongUp(PLAYLIST_SONG plSong)
{
if (!PLAYLIST_SONGS.Any(i => i.ORDER < plSong.ORDER))
{
return;
}
var targetPlSong =
PLAYLIST_SONGS.Where(i => i.ORDER < plSong.ORDER).OrderByDescending(k => k.ORDER).FirstOrDefault();
int newPosition = targetPlSong.ORDER;
targetPlSong.ORDER = plSong.ORDER;
plSong.ORDER = newPosition;
}
public void MoveSongDown(PLAYLIST_SONG plSong)
{
if (!PLAYLIST_SONGS.Any(i => i.ORDER > plSong.ORDER))
{
return;
}
var songInTargetPosition = PLAYLIST_SONGS.Where(i => i.ORDER > plSong.ORDER).OrderBy(k => k.ORDER).FirstOrDefault();
var newPosition = songInTargetPosition.ORDER;
songInTargetPosition.ORDER = plSong.ORDER;
plSong.ORDER = newPosition;
}