protected void processMouseEvent(MouseEvent e) {
   MouseEvent transformedEvent = transformMouseEvent(e);
   switch (e.getID()) {
     case MouseEvent.MOUSE_ENTERED:
       if (mouseDraggedComponent == null || mouseCurrentComponent == mouseDraggedComponent) {
         dispatchMouseEvent(transformedEvent);
       }
       break;
     case MouseEvent.MOUSE_EXITED:
       if (mouseEnteredComponent != null) {
         dispatchMouseEvent(
             createEnterExitEvent(mouseEnteredComponent, MouseEvent.MOUSE_EXITED, e));
         mouseEnteredComponent = null;
       }
       break;
     case MouseEvent.MOUSE_RELEASED:
       if (mouseDraggedComponent != null && e.getButton() == MouseEvent.BUTTON1) {
         transformedEvent.setSource(mouseDraggedComponent);
         mouseDraggedComponent = null;
       }
       dispatchMouseEvent(transformedEvent);
       break;
     default:
       dispatchMouseEvent(transformedEvent);
   }
   super.processMouseEvent(e);
 }