DefaultButtonTest.java

/*
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 * 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.
 *
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import java.awt.Robot;
import java.awt.event.KeyEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

/*
 * @test
 * @key headful
 * @bug 8280913
 * @summary Check whether the default button is honored when <Enter> key is pressed.
 * @run main DefaultButtonTest
 */
public class DefaultButtonTest {
    private volatile boolean buttonPressed;
    private JFrame frame;

    public static void main(String[] s) throws Exception {
        DefaultButtonTest test = new DefaultButtonTest();
        test.runTest();
    }

    private static void setLookAndFeel(String lafName) {
        try {
            UIManager.setLookAndFeel(lafName);
        } catch (UnsupportedLookAndFeelException ignored) {
            System.out.println("Ignoring Unsupported L&F: " + lafName);
        } catch (ClassNotFoundException | InstantiationException
                | IllegalAccessException e) {
            throw new RuntimeException(e);
        }
    }

    private void disposeFrame() {
        if (frame != null) {
            frame.dispose();
            frame = null;
        }
    }

    private void createUI() {
        frame = new JFrame("Default Button Test");
        JPanel panel = new JPanel();
        panel.add(new JTextField("Text field"));
        JButton button1 = new JButton("Default");
        button1.addActionListener(e -> buttonPressed = true);
        panel.add(button1);
        panel.add(new JButton("Button2"));
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(panel);
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.getRootPane().setDefaultButton(button1);
        frame.setVisible(true);
    }

    public void runTest() throws Exception {
        Robot robot = new Robot();
        robot.setAutoDelay(100);
        for (UIManager.LookAndFeelInfo laf : UIManager.getInstalledLookAndFeels()) {
            try {
                buttonPressed = false;
                String lafName = laf.getClassName();
                System.out.println("Testing L&F: " + lafName);
                SwingUtilities.invokeAndWait(() -> {
                    setLookAndFeel(lafName);
                    createUI();
                });
                robot.waitForIdle();
                robot.keyPress(KeyEvent.VK_ENTER);
                robot.keyRelease(KeyEvent.VK_ENTER);
                robot.waitForIdle();

                if (buttonPressed) {
                    System.out.println("Test Passed for L&F: " + lafName);
                } else {
                    throw new RuntimeException("Test Failed, Default Button not pressed for L&F: " + lafName);
                }
            } finally {
                SwingUtilities.invokeAndWait(this::disposeFrame);
            }
        }
    }
}