private void OnInputChanged(object sender, NotifyCollectionChangedEventArgs e)
{
switch (e.Action) {
case NotifyCollectionChangedAction.Add:
AddItems(e.NewItems<IDataObject>());
break;
case NotifyCollectionChangedAction.Remove:
RemoveItems(e.OldItems<IDataObject>());
break;
case NotifyCollectionChangedAction.Reset:
var currentItems = sender as ReadOnlyObservableCollection<IDataObject>;
ClearOutput();
if (currentItems == null) break;
AddItems(currentItems);
break;
case NotifyCollectionChangedAction.Replace:
RemoveItems(e.OldItems<IDataObject>());
AddItems(e.NewItems<IDataObject>());
break;
default: break;
}
}
