samer@0: /*
samer@0:  *	MouseRetarget.java	
samer@0:  *
samer@0:  *	Copyright (c) 2000, Samer Abdallah, King's College London.
samer@0:  *	All rights reserved.
samer@0:  *
samer@0:  *	This software is provided AS iS and WITHOUT ANY WARRANTY; 
samer@0:  *	without even the implied warranty of MERCHANTABILITY or 
samer@0:  *	FITNESS FOR A PARTICULAR PURPOSE.
samer@0:  */
samer@0: 
samer@0: package samer.core.util;
samer@0: import  java.awt.*;
samer@0: import  java.awt.event.*;
samer@0: 
samer@0: 
samer@0: /**
samer@0: 		This is a mouse event handler that makes
samer@0: 		a component effectively invisible to
samer@0: 		mouse clicks by routing a events through
samer@0: 		to the parent container. 
samer@0:  */
samer@0: 		
samer@0: public class MouseRetarget extends MouseAdapter
samer@0: {
samer@0: 	private void retarget(MouseEvent e)
samer@0: 	{
samer@0: 		if (!e.isConsumed()) { // no point otherwise
samer@0: 			Component c=e.getComponent();
samer@0: 			Component parent=c.getParent();
samer@0: 
samer@0: 			if (parent!=null) {
samer@0: 				Point origin=c.getLocation();
samer@0: 		
samer@0: 				// Must make new event look as if it
samer@0: 				// was generated by parent
samer@0: 
samer@0: 				MouseEvent ee = new MouseEvent(
samer@0: 					parent,
samer@0: 					e.getID(),	
samer@0: 					e.getWhen(), 
samer@0: 					e.getModifiers(),
samer@0: 					e.getX() + origin.x,
samer@0: 					e.getY() + origin.y,
samer@0: 					e.getClickCount(),                  
samer@0: 					e.isPopupTrigger());
samer@0: 
samer@0: 				parent.dispatchEvent(ee);
samer@0: 			}
samer@0: 		}
samer@0: 	}
samer@0: 
samer@0: 	public void mouseClicked(MouseEvent e) { retarget(e); }
samer@0: 	public void mousePressed(MouseEvent e) { retarget(e); }
samer@0: 	public void mouseReleased(MouseEvent e) { retarget(e); }
samer@0: 
samer@0: 	// This one static object can handle all the mouse
samer@0: 	// event redirection for everyone
samer@0: 
samer@0: 	public static final MouseListener listener=new MouseRetarget();
samer@0: 	public static void mouseInvisibilityFor(Component c) {
samer@0: 		c.addMouseListener(listener);
samer@0: 	}
samer@0: }
samer@0: 
samer@0: 
samer@0: