private void OnRecordsShrunk(TimeRecordCollection <T> serie, int oldItemsCount)
{
lock (Locker)
{
int itemsRemoved = oldItemsCount - serie.Count;
Cursor = Cursor - itemsRemoved;
Debug.Assert(Cursor > -1 || Cursor <= -itemsRemoved, "Cursor is meant to be >= 0 unless it was 0 ( - itemsRemoved now )");
if (Cursor < 0)
{
Cursor = 0;
}
}
}
public TimeSerieNavigator(IEnumerable <T> items)
{
Records = new TimeRecordCollection <T>(items);
Records.NewRecord += Records_NewRecord;
Records.OnShrink += OnRecordsShrunk;
}
private void Records_NewRecord(TimeRecordCollection <T> sender, T rec)
{
OnNewRecord?.Invoke(rec);
}
public TimeSerieNavigator()
{
Records = new TimeRecordCollection <T>();
Records.NewRecord += Records_NewRecord;;
Records.OnShrink += OnRecordsShrunk;
}