private void SourceCollection_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
AddItems(e.NewItems?.Cast <T>());
break;
case NotifyCollectionChangedAction.Remove:
RemoveItems(e.OldItems?.Cast <T>());
break;
case NotifyCollectionChangedAction.Reset:
WeakEvents.Unsubscribe(this);
Items.Clear();
AttachCollectionEvents((INotifyCollectionChanged)sender);
break;
case NotifyCollectionChangedAction.Replace:
RemoveItems(e.OldItems?.Cast <T>());
AddItems(e.NewItems?.Cast <T>());
break;
case NotifyCollectionChangedAction.Move:
break;
default:
throw new NotImplementedException("Source action not supported");
}
}
public void UnsubscribeAll()
{
WeakEvents.Unsubscribe(this);
}
