public DesignerDragDropManager(DesignerControl userControl)
 {
     _userControl = userControl;
     _userControl.DragDrop += DesignerControl_DragDrop;
     _userControl.DragEnter += DesignerControl_DragEnter;
     _userControl.MouseDown += _userControl_MouseDown;
     _userControl.DragOver += _userControl_DragOver;
 }
        public DesignerTransitionManager(DesignerControl designerControl)
        {
            _designerControl = designerControl;

            _designerControl.MouseDown += _designerControl_MouseDown;
            _designerControl.DragEnter += _designerControl_DragEnter;
            _designerControl.DragOver += _designerControl_DragOver;
            _designerControl.DragDrop += _designerControl_DragDrop;
        }
 public DesignerShortcutManager(DesignerControl userControl)
 {
     _userControl = userControl;
     _userControl.KeyDown += _userControl_KeyDown;
 }
 public DesignerSelectionManager(DesignerControl userControl)
 {
     _userControl = userControl;
     _userControl.MouseDown += _userControl_MouseDown;
 }