public ElementsWindowViewModel(ElementsWindow elementsWindow)
 {
   this.elementsWindow = elementsWindow;
   elements = elementsWindow.GetElements().Select(x => new InitialElementViewModel(x)).ToList();
 }
 public WindowCollection()
 {
   EditorWindows = new List<EditorWindow>();
   PropertiesWindow = new PropertiesWindow();
   ElementsWindow = new ElementsWindow();
 }