/*
 * @(#)SimpleExample.java	1.23 99/04/23
 *
 * Copyright (c) 1997-1999 by Sun Microsystems, Inc. All Rights Reserved.
 * 
 * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
 * modify and redistribute this software in source and binary code form,
 * provided that i) this copyright notice and license appear on all copies of
 * the software; and ii) Licensee does not utilize the software in a manner
 * which is disparaging to Sun.
 * 
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
 * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
 * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
 * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
 * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
 * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
 * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
 * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
 * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 * 
 * This software is not designed or intended for use in on-line control of
 * aircraft, air traffic, aircraft navigation or aircraft communications; or in
 * the design, construction, operation or maintenance of any nuclear
 * facility. Licensee represents and warrants that it will not use or
 * redistribute the Software for such purposes.
 */

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

/**
 * An application that displays a JButton and several JRadioButtons.
 * The JRadioButtons determine the look and feel used by the application.
 */
public class SimpleExample extends JPanel {
    static JFrame frame;

    static String metal= "Metal";
    static String metalClassName = "javax.swing.plaf.metal.MetalLookAndFeel";

    static String motif = "Motif";
    static String motifClassName = 
	    "com.sun.java.swing.plaf.motif.MotifLookAndFeel";

    static String windows = "Windows";
    static String windowsClassName = 
	    "com.sun.java.swing.plaf.windows.WindowsLookAndFeel";

    JRadioButton metalButton, motifButton, windowsButton;

    public SimpleExample() {
	// Create the buttons.
	JButton button = new JButton("Hello, world");
        button.setMnemonic('h'); //for looks only; button does nada

	metalButton = new JRadioButton(metal);
        metalButton.setMnemonic('o'); 
	metalButton.setActionCommand(metalClassName);

	motifButton = new JRadioButton(motif);
        motifButton.setMnemonic('m'); 
	motifButton.setActionCommand(motifClassName);

	windowsButton = new JRadioButton(windows);
        windowsButton.setMnemonic('w'); 
	windowsButton.setActionCommand(windowsClassName);

	// Group the radio buttons.
	ButtonGroup group = new ButtonGroup();
	group.add(metalButton);
	group.add(motifButton);
	group.add(windowsButton);

        // Register a listener for the radio buttons.
	RadioListener myListener = new RadioListener();
	metalButton.addActionListener(myListener);
	motifButton.addActionListener(myListener);
	windowsButton.addActionListener(myListener);

	add(button);
	add(metalButton);
	add(motifButton);
	add(windowsButton);
    }


    /** An ActionListener that listens to the radio buttons. */
    class RadioListener implements ActionListener {
	public void actionPerformed(ActionEvent e) {
	    String lnfName = e.getActionCommand();

            try {
		UIManager.setLookAndFeel(lnfName);
		SwingUtilities.updateComponentTreeUI(frame);
		frame.pack();
            } 
	    catch (Exception exc) {
		JRadioButton button = (JRadioButton)e.getSource();
		button.setEnabled(false);
		updateState();
                System.err.println("Could not load LookAndFeel: " + lnfName);
            }
	    
	}
    }

    public void updateState() {
	 String lnfName = UIManager.getLookAndFeel().getClass().getName();
	 if (lnfName.indexOf(metal) >= 0) {
	     metalButton.setSelected(true);
	 } else if (lnfName.indexOf(windows) >= 0) {
	     windowsButton.setSelected(true);
	 } else if (lnfName.indexOf(motif) >= 0) {
	     motifButton.setSelected(true);
	 } else {
	     System.err.println("SimpleExample is using an unknown L&F: " + lnfName);
	 }
    }

    public static void main(String s[]) {
	/* 
	   NOTE: By default, the look and feel will be set to the
	   Cross Platform Look and Feel (which is currently Metal).
	   The user may someday be able to override the default
	   via a system property. If you as the developer want to
	   be sure that a particular L&F is set, you can do so
	   by calling UIManager.setLookAndFeel(). For example, the
	   first code snippet below forcibly sets the UI to be the
	   System Look and Feel. The second code snippet forcibly
	   sets the look and feel to the Cross Platform L&F.

	   Snippet 1:
	      try {
	          UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
	      } catch (Exception exc) {
	          System.err.println("Error loading L&F: " + exc);
	      }

	   Snippet 2:
	      try {
	          UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
	      } catch (Exception exc) {
	          System.err.println("Error loading L&F: " + exc);
              }
	*/

	SimpleExample panel = new SimpleExample();
	
	frame = new JFrame("SimpleExample");
	frame.addWindowListener(new WindowAdapter() {
	    public void windowClosing(WindowEvent e) {System.exit(0);}
	});
	frame.getContentPane().add("Center", panel);
	frame.pack();
	frame.setVisible(true);
	
	panel.updateState();
    }
}