Implement Auto-Hide Scrollbar in SWT Text Component

 Text textControl = new Text(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);  
 Listener listener = new Listener (){  
   @Override  
   public void handleEvent(Event event) {  
    Text t = (Text)event.widget;  
    Rectangle r1 = t.getClientArea();  
    Rectangle r2 = t.computeTrim(r1.x, r1.y, r1.width, r1.height);  
    Point p = t.computeSize(SWT.DEFAULT, SWT.DEFAULT, true);  
    t.getHorizontalBar().setVisible(r2.width <= p.x);  
    t.getVerticalBar().setVisible(r2.height <= p.y);  
    if (event.type == SWT.Modify){  
     t.getParent().layout(true);  
           t.showSelection();  
    }  
   }};  
  textControl.addListener(SWT.Resize, listener);  
  textControl.addListener(SWT.Modify, listener);