protected override void OnKeyDown(KeyEventArgs e)
{
base.OnKeyDown(e);
if (e.Key == Key.Delete)
{
_graphViewModel.RemoveSelectedElements();
}
if (Keyboard.IsKeyDown(Key.LeftCtrl) || Keyboard.IsKeyDown(Key.RightCtrl))
{
if (e.Key == Key.A)
{
_graphViewModel.SelectAll();
_elementsGraph.Values.ToList().ForEach(el => el.IsSelected = true);
}
}
}