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Java example source code file (bug6587742.java)

This example Java source code file (bug6587742.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

awt, boxlayout, defaultmetaltheme, event, gui, horizontal, japplet, jcombobox, jlabel, jpanel, jslider, jtabbedpane, metaltheme, oceantheme, select, swing, testpanel, unsupportedlookandfeelexception

The bug6587742.java Java example source code

/*
 * Copyright (c) 2008, 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.
 *
 * 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.
 */

/* @test
 * @bug 6587742
 * @summary filling half of a JSlider's track is no longer optional
 * @author Pavel Porvatov
 * @run applet/manual=done bug6587742.html
 */

import javax.swing.*;
import javax.swing.plaf.metal.DefaultMetalTheme;
import javax.swing.plaf.metal.MetalLookAndFeel;
import javax.swing.plaf.metal.MetalTheme;
import javax.swing.plaf.metal.OceanTheme;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;

public class bug6587742 extends JApplet {
    public void init() {
        TestPanel panel = new TestPanel();

        setContentPane(panel);
    }

    private class TestPanel extends JPanel {
        private final JComboBox cbThemes = new JComboBox();

        private TestPanel() {
            // Fill cbThemes
            cbThemes.addItem(new OceanTheme());
            cbThemes.addItem(new DefaultMetalTheme());

            cbThemes.addItemListener(new ItemListener() {
                public void itemStateChanged(ItemEvent e) {
                    MetalTheme theme = (MetalTheme) cbThemes.getSelectedItem();

                    if (theme != null) {
                        MetalLookAndFeel.setCurrentTheme(theme);

                        // re-install the Metal Look and Feel
                        try {
                            UIManager.setLookAndFeel(new MetalLookAndFeel());
                        } catch (UnsupportedLookAndFeelException e1) {
                            JOptionPane.showMessageDialog(TestPanel.this, "Can't change theme: " + e1.getMessage(),
                                    "Error", JOptionPane.ERROR_MESSAGE);

                            return;
                        }

                        SwingUtilities.updateComponentTreeUI(bug6587742.this);
                    }
                }
            });

            JPanel pnVertical = new JPanel();

            pnVertical.setLayout(new BoxLayout(pnVertical, BoxLayout.Y_AXIS));

            for (int i = 0; i < 12; i++) {
                int filled = i >> 2;

                pnVertical.add(createSlider(false, filled > 1 ? null : Boolean.valueOf(filled == 1), (i & 2) == 0,
                        (i & 1) != 0));
            }

            JPanel pnHorizontal = new JPanel();

            pnHorizontal.setLayout(new BoxLayout(pnHorizontal, BoxLayout.X_AXIS));

            for (int i = 0; i < 12; i++) {
                int filled = i >> 2;

                pnHorizontal.add(createSlider(true, filled > 1 ? null : Boolean.valueOf(filled == 1), (i & 2) == 0,
                        (i & 1) != 0));
            }

            JTabbedPane tpSliders = new JTabbedPane();

            tpSliders.add("Vertical sliders", pnVertical);
            tpSliders.add("Horizontal sliders", pnHorizontal);

            setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));

            add(new JLabel("Select theme:"));
            add(cbThemes);
            add(tpSliders);
        }
    }

    private static JSlider createSlider(boolean vertical, Boolean filled, boolean enabled, boolean inverted) {
        JSlider result = new JSlider(vertical ? SwingConstants.VERTICAL : SwingConstants.HORIZONTAL, 0, 100, 50);

        result.setMajorTickSpacing(20);
        result.setMinorTickSpacing(5);
        result.setPaintTicks(true);
        result.setPaintLabels(true);
        result.setEnabled(enabled);

        if (filled != null) {
            result.putClientProperty("JSlider.isFilled", filled);
        }

        result.setInverted(inverted);
        result.setToolTipText("<html>vertical = " + vertical + "
enabled = " + enabled + "
filled = " + filled + "<br>inverted = " + inverted + ""); return result; } }

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