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

        public bool IsTrackEnabled (int index)
        {
            if (!enabled_cache.ContainsKey (index)) {
                int current_index = current_track == null ? Count : TrackModel.IndexOf (current_track);
                enabled_cache.Add (index, index >= current_index);
            }
            return enabled_cache[index];
        }

 public override TrackInfo this[int index] {
     get {
         lock (this) {
             var track = cache.GetValue(index);
             if (track != null)
             {
                 track.Enabled = source.IsTrackEnabled(index);
             }
             return(track);
         }
     }
 }