?? showlisten.java
字號:
package com.oozinoz.applications;
import com.oozinoz.ui.*;
import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
/*
* Copyright (c) 2001 Steven J. Metsker.
*
* Steve Metsker makes no representations or warranties about
* the fitness of this software for any particular purpose,
* including the implied warranty of merchantability.
*
* Please use this software as you wish with the sole
* restriction that you may not claim that you wrote it.
*/
/**
* Show the dynamic addition of behavior to a button. The point
* here is that this ability is different from the idea of the
* Decorator pattern. The Decorator pattern's intent is to
* provide for dynamic addition behavior through composition.
*
* @author Steven J. Metsker
*/
public class ShowListen
{
protected static JButton createButton(String label)
{
JButton b = new JButton(label);
b.setFont(SwingFacade.getStandardFont());
b.setFocusPainted(false);
return b;
}
/**
* Show the dynamic addition of behavior to a button.
*/
public static void main(String[] args)
{
JPanel p = new JPanel();
p.add(createButton("Normal"));
final JButton b = createButton("Nifty");
b.addMouseListener
(
new MouseAdapter()
{
public void mouseEntered(MouseEvent e)
{
b.setBackground(Color.cyan);
b.repaint();
}
public void mouseExited(MouseEvent e)
{
b.setBackground(Color.lightGray);
b.repaint();
}
}
);
b.setBackground(Color.lightGray);
p.add(b);
SwingFacade.launch(p, " Rollover");
}
}
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