jdk-24/test/jdk/javax/swing/JSlider/bug6587742.java

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import javax.swing.BoxLayout;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.JTabbedPane;
import javax.swing.SwingConstants;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
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;

/* @test
 * @bug 6587742
 * @summary filling half of a JSlider's track is no longer optional
 * @library /java/awt/regtesthelpers
 * @build PassFailJFrame
 * @run main/manual bug6587742
 */

public class bug6587742 {
    private static final String INSTRUCTIONS = """
            Select every theme and check that all sliders looks good.
            Note that every slider has a tooltip text with information about
            slider configuration.
            There is a small difference in sliders with property "filled = null" (it's
            default behaviour when property JSlider.isFilled is not setted)
            for themes:
            1. OceanTheme - sliders look like filled
            2. DefaultMetalTheme - sliders look like NOT filled\s""";
    private static JFrame frame;

    public static void main(String[] args) throws Exception {
        PassFailJFrame.builder()
                .title("JSlider Instructions")
                .instructions(INSTRUCTIONS)
                .rows(10)
                .columns(40)
                .testUI(bug6587742::createAndShowUI)
                .build()
                .awaitAndCheck();
    }

    public static JFrame createAndShowUI() {
        frame = new JFrame("Test Sliders");
        TestPanel panel = new TestPanel();
        frame.setSize(800, 600);
        frame.getContentPane().add(panel);
        return frame;
    }

    private static 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(frame);
                    }
                }
            });

            JPanel pnVertical = new JPanel();

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

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

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

            JPanel pnHorizontal = new JPanel();

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

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

                pnHorizontal.add(createSlider(false, 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 + "<br>enabled = " + enabled + "<br>filled = " + filled +
                "<br>inverted = " + inverted + "</html>");

        return result;
    }
}