public SmartHierarchy(EditorWindow window)
{
root = window.rootVisualElement;
this.window = new SceneHierarchyWindow(window);
hoverPreview = new HoverPreview();
Initialize();
RegisterCallbacks();
hierarchy.ReassignCallbacks();
guiContainer = root.parent.Query <IMGUIContainer>().First();
// onGUIHandler is called after hierarchy GUI, thus has a slight delay
guiContainer.onGUIHandler += OnAfterGUI;
root.Add(hoverPreview);
}
