private void ElementOrderViewModel_SelectedItemsChanged(object sender, NotifyCollectionChangedEventArgs e)
{
if (!_selectionChanging)
{
_selectionChanging = true;
//Console.Out.WriteLine($"Element View Model changed {e.Action}");
if (e.Action == NotifyCollectionChangedAction.Reset)
{
DrawingPanelViewModel.DeselectAll();
}
if (e.Action == NotifyCollectionChangedAction.Remove)
{
var lvm = e.OldItems.Cast <ElementModelViewModel>().SelectMany(x => x.GetLeafEnumerator());
DrawingPanelViewModel.Deselect(lvm);
}
if (e.Action == NotifyCollectionChangedAction.Add)
{
var models = e.NewItems.Cast <ElementModelViewModel>().SelectMany(x => x.GetLeafEnumerator());
DrawingPanelViewModel.Select(models);
}
_selectionChanging = false;
}
}
/// <summary>
/// Method to invoke when the Delete command is executed.
/// </summary>
private void Delete()
{
//PropModelServices.Instance().RemoveElementModels(ElementTreeViewModel.SelectedItems.Select(x => x.ElementModel));
var itemsToDelete = ElementTreeViewModel.SelectedItems.ToList();
ElementTreeViewModel.SelectedItems.Clear();
itemsToDelete.ForEach(x => x.RemoveFromParent());
DrawingPanelViewModel.DeselectAll();
DrawingPanelViewModel.RefreshLightViewModels();
ElementOrderViewModel.RefreshElementLeafViewModels();
}
