private void CloneSourceList(ReferenceCountTracker <T> tracker, IChangeSet <T> changes)
{
changes.ForEach(change =>
{
switch (change.Reason)
{
case ListChangeReason.Add:
tracker.Add(change.Item.Current);
break;
case ListChangeReason.AddRange:
foreach (var t in change.Range)
{
tracker.Add(t);
}
break;
case ListChangeReason.Replace:
tracker.Remove(change.Item.Previous.Value);
tracker.Add(change.Item.Current);
break;
case ListChangeReason.Remove:
tracker.Remove(change.Item.Current);
break;
case ListChangeReason.RemoveRange:
case ListChangeReason.Clear:
foreach (var t in change.Range)
{
tracker.Remove(t);
}
break;
//case ListChangeReason.Clear:
// tracker.Clear();
// break;
}
});
}
protected override void RemoveItem(int index, T item)
{
_tracker.Remove(item);
base.RemoveItem(index, item);
}