Banshee.PlayQueue.PlayQueueSource.Refresh C# (CSharp) Method

        public void Refresh ()
        {
            int index = current_track == null ? Count : TrackModel.IndexOf (current_track);

            // If the current track is not playing refresh it too.
            if (current_track != null && !ServiceManager.PlayerEngine.IsPlaying (current_track)) {
                index--;
            }

            if (index + 1 < Count) {
                // Get the ViewOrder of the current_track
                long current_view_order = CurrentTrackViewOrder;

                // Get the list of generated tracks.
                var generated = new HashSet<long> ();
                foreach (long trackID in ServiceManager.DbConnection.QueryEnumerable<long> ( @"
                    SELECT TrackID
                    FROM CorePlaylistEntries
                    WHERE PlaylistID = ? AND Generated = 1 AND ViewOrder >= ?",
                    DbId, current_view_order)) {

                    generated.Add (trackID);
                }

                // Collect the indices of all generated tracks.
                var ranges = new RangeCollection ();
                for (int i = index + 1; i < Count; i++) {
                    if (generated.Contains (((DatabaseTrackInfo)TrackModel[i]).TrackId)) {
                        ranges.Add (i);
                    }
                }

                bool removed = false;
                foreach (var range in ranges.Ranges) {
                    RemoveTrackRange (DatabaseTrackModel, range);
                    removed = true;
                }

                if (removed) {
                    OnTracksRemoved ();
                }
            } else if (Count == 0 || current_track == null) {
                UpdatePlayQueue ();
            }
        }

 private void OnRefreshPlayQueue(object o, EventArgs args)
 {
     playqueue.Refresh();
 }