public virtual void OnDisable()
 {
     //Debug.Log("OnDisable");
     Window = null;
     Editor = null;
     Data   = null;
 }
        public virtual void OnEnable(RoMapEditorWindow window, RoMapEditor editor)
        {
            Window = window;
            Editor = editor;
            Data   = editor.MapData;

            Editor.CurrentBrush = this;

            //Debug.Log("OnEnable");

            OnEnable();
        }