Java example source code file (MetalThemeMenu.java)

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Java - Java tags/keywords

actionlistener, awt, buttongroup, event, exception, gui, jmenu, jradiobuttonmenuitem, leakingthisinconstructor, metaltheme, metalthememenu, string, suppresswarnings, swing

The MetalThemeMenu.java Java example source code

/*
 * Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - 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.
 *
 *   - Neither the name of Oracle nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
 */

/*
 * This source code is provided to illustrate the usage of a given feature
 * or technique and has been deliberately simplified. Additional steps
 * required for a production-quality application, such as security checks,
 * input validation and proper error handling, might not be present in
 * this sample code.
 */



import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ButtonGroup;
import javax.swing.JMenu;
import javax.swing.JRadioButtonMenuItem;
import javax.swing.UIManager;
import javax.swing.plaf.metal.MetalLookAndFeel;
import javax.swing.plaf.metal.MetalTheme;


/**
 * This class describes a theme using "green" colors.
 *
 * @author Steve Wilson
 * @author Alexander Kouznetsov
 */
@SuppressWarnings("serial")
public class MetalThemeMenu extends JMenu implements ActionListener {

    MetalTheme[] themes;

    @SuppressWarnings("LeakingThisInConstructor")
    public MetalThemeMenu(String name, MetalTheme[] themeArray) {
        super(name);
        themes = themeArray;
        ButtonGroup group = new ButtonGroup();
        for (int i = 0; i < themes.length; i++) {
            JRadioButtonMenuItem item = new JRadioButtonMenuItem(themes[i].
                    getName());
            group.add(item);
            add(item);
            item.setActionCommand(i + "");
            item.addActionListener(this);
            if (i == 0) {
                item.setSelected(true);
            }
        }

    }

    public void actionPerformed(ActionEvent e) {
        String numStr = e.getActionCommand();
        MetalTheme selectedTheme = themes[Integer.parseInt(numStr)];
        MetalLookAndFeel.setCurrentTheme(selectedTheme);
        try {
            UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
        } catch (Exception ex) {
            System.out.println("Failed loading Metal");
            System.out.println(ex);
        }

    }
}