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Java example source code file (MetalDesktopIconUI.java)

This example Java source code file (MetalDesktopIconUI.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

actionlistener, awt, basicdesktopiconui, borderlayout, componentui, dimension, event, gui, jbutton, jlabel, matteborder, metalbumps, metaldesktopiconui, plaf, propertychangeevent, propertychangelistener, string, swing, titlelistener, util

The MetalDesktopIconUI.java Java example source code

/*
 * Copyright (c) 1998, 2003, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package javax.swing.plaf.metal;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.plaf.*;
import java.beans.*;
import java.util.EventListener;
import java.io.Serializable;
import javax.swing.plaf.basic.BasicDesktopIconUI;

/**
 * Metal desktop icon.
 *
 * @author Steve Wilson
 */
public class MetalDesktopIconUI extends BasicDesktopIconUI
{

    JButton button;
    JLabel label;
    TitleListener titleListener;
    private int width;

    public static ComponentUI createUI(JComponent c)    {
        return new MetalDesktopIconUI();
    }

    public MetalDesktopIconUI() {
    }

    protected void installDefaults() {
        super.installDefaults();
        LookAndFeel.installColorsAndFont(desktopIcon, "DesktopIcon.background", "DesktopIcon.foreground", "DesktopIcon.font");
        width = UIManager.getInt("DesktopIcon.width");
    }

    protected void installComponents() {
        frame = desktopIcon.getInternalFrame();
        Icon icon = frame.getFrameIcon();
        String title = frame.getTitle();

        button = new JButton (title, icon);
        button.addActionListener( new ActionListener() {
                                  public void actionPerformed(ActionEvent e) {
             deiconize(); }} );
        button.setFont(desktopIcon.getFont());
        button.setBackground(desktopIcon.getBackground());
        button.setForeground(desktopIcon.getForeground());

        int buttonH = button.getPreferredSize().height;

        Icon drag = new MetalBumps((buttonH/3), buttonH,
                                   MetalLookAndFeel.getControlHighlight(),
                                   MetalLookAndFeel.getControlDarkShadow(),
                                   MetalLookAndFeel.getControl());
        label = new JLabel(drag);

        label.setBorder( new MatteBorder( 0, 2, 0, 1, desktopIcon.getBackground()) );
        desktopIcon.setLayout(new BorderLayout(2, 0));
        desktopIcon.add(button, BorderLayout.CENTER);
        desktopIcon.add(label, BorderLayout.WEST);
    }

    protected void uninstallComponents() {
        desktopIcon.setLayout(null);
        desktopIcon.remove(label);
        desktopIcon.remove(button);
        button = null;
        frame = null;
    }

    protected void installListeners() {
        super.installListeners();
        desktopIcon.getInternalFrame().addPropertyChangeListener(
                titleListener = new TitleListener());
    }

    protected void uninstallListeners() {
        desktopIcon.getInternalFrame().removePropertyChangeListener(
                titleListener);
        titleListener = null;
        super.uninstallListeners();
    }


    public Dimension getPreferredSize(JComponent c) {
        // Metal desktop icons can not be resized.  Their dimensions should
        // always be the minimum size.  See getMinimumSize(JComponent c).
        return getMinimumSize(c);
    }

    public Dimension getMinimumSize(JComponent c) {
        // For the metal desktop icon we will use the layout maanger to
        // determine the correct height of the component, but we want to keep
        // the width consistent according to the jlf spec.
        return new Dimension(width,
                desktopIcon.getLayout().minimumLayoutSize(desktopIcon).height);
    }

    public Dimension getMaximumSize(JComponent c) {
        // Metal desktop icons can not be resized.  Their dimensions should
        // always be the minimum size.  See getMinimumSize(JComponent c).
        return getMinimumSize(c);
    }

    class TitleListener implements PropertyChangeListener {
        public void propertyChange (PropertyChangeEvent e) {
          if (e.getPropertyName().equals("title")) {
            button.setText((String)e.getNewValue());
          }

          if (e.getPropertyName().equals("frameIcon")) {
            button.setIcon((Icon)e.getNewValue());
          }
        }
    }
}

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