LNFSwitcher.java Source code

Introduction

Here is the source code for LNFSwitcher.java

Source

/*
 * Copyright (c) Ian F. Darwin, http://www.darwinsys.com/, 1996-2002.
 * All rights reserved. Software written by Ian F. Darwin and others.
 * $Id: LICENSE,v 1.8 2004/02/09 03:33:38 ian Exp $
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * 
 * Java, the Duke mascot, and all variants of Sun's Java "steaming coffee
 * cup" logo are trademarks of Sun Microsystems. Sun's, and James Gosling's,
 * pioneering role in inventing and promulgating (and standardizing) the Java 
 * language and environment is gratefully acknowledged.
 * 
 * The pioneering role of Dennis Ritchie and Bjarne Stroustrup, of AT&T, for
 * inventing predecessor languages C and C++ is also gratefully acknowledged.
 */

import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JRadioButton;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;

/**
 * A Look-and-feel switcher.
 * 
 * @author Ian Darwin, http://www.darwinsys.com/
 * @version $Id: LNFSwitcher.java,v 1.7 2004/03/07 04:03:15 ian Exp $
 */
public class LNFSwitcher {
    /** The frame. */
    protected JFrame theFrame;

    /** Its content pane */
    protected Container cp;

    /** Start with the Java look-and-feel, if possible */
    final static String PREFERREDLOOKANDFEELNAME = "javax.swing.plaf.metal.MetalLookAndFeel";

    protected String curLF = PREFERREDLOOKANDFEELNAME;

    protected JRadioButton previousButton;

    /** Construct a program... */
    public LNFSwitcher() {
        super();
        theFrame = new JFrame("LNF Switcher");
        theFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        cp = theFrame.getContentPane();
        cp.setLayout(new FlowLayout());

        ButtonGroup bg = new ButtonGroup();

        JRadioButton bJava = new JRadioButton("Java");
        bJava.addActionListener(new LNFSetter("javax.swing.plaf.metal.MetalLookAndFeel", bJava));
        bg.add(bJava);
        cp.add(bJava);

        JRadioButton bMSW = new JRadioButton("MS-Windows");
        bMSW.addActionListener(new LNFSetter("com.sun.java.swing.plaf.windows.WindowsLookAndFeel", bMSW));
        bg.add(bMSW);
        cp.add(bMSW);

        JRadioButton bMotif = new JRadioButton("Motif");
        bMotif.addActionListener(new LNFSetter("com.sun.java.swing.plaf.motif.MotifLookAndFeel", bMotif));
        bg.add(bMotif);
        cp.add(bMotif);

        JRadioButton bMac = new JRadioButton("Sun-MacOS");
        bMac.addActionListener(new LNFSetter("com.sun.java.swing.plaf.mac.MacLookAndFeel", bMac));
        bg.add(bMac);
        cp.add(bMac);

        String defaultLookAndFeel = UIManager.getSystemLookAndFeelClassName();
        // System.out.println(defaultLookAndFeel);
        JRadioButton bDefault = new JRadioButton("Default");
        bDefault.addActionListener(new LNFSetter(defaultLookAndFeel, bDefault));
        bg.add(bDefault);
        cp.add(bDefault);

        (previousButton = bDefault).setSelected(true);

        theFrame.pack();
        theFrame.setVisible(true);
    }

    /* Class to set the Look and Feel on a frame */
    class LNFSetter implements ActionListener {
        String theLNFName;

        JRadioButton thisButton;

        /** Called to setup for button handling */
        LNFSetter(String lnfName, JRadioButton me) {
            theLNFName = lnfName;
            thisButton = me;
        }

        /** Called when the button actually gets pressed. */
        public void actionPerformed(ActionEvent e) {
            try {
                UIManager.setLookAndFeel(theLNFName);
                SwingUtilities.updateComponentTreeUI(theFrame);
                theFrame.pack();
            } catch (Exception evt) {
                JOptionPane.showMessageDialog(null, "setLookAndFeel didn't work: " + evt, "UI Failure",
                        JOptionPane.INFORMATION_MESSAGE);
                previousButton.setSelected(true); // reset the GUI to agree
            }
            previousButton = thisButton;
        }
    }

    public static void main(String[] argv) {
        new LNFSwitcher();
    }
}