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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * 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
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 *
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 * 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.Rectangle;
import java.awt.Robot;
import java.awt.event.KeyEvent;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;

/*
 * @test
 * @bug 8155030
 * @key headful
 * @requires (os.family == "linux" | os.family == "mac")
 * @library /javax/swing/regtesthelpers
 * @build Util
 * @summary Verifies if menu mnemonic toggle on Alt press in GTK and Aqua LAF
 * @run main TestMenuMnemonicLinuxAndMac
 */

public class TestMenuMnemonicLinuxAndMac {

    private static JFrame frame;
    private static JMenu fileMenu;
    private static volatile Rectangle fileMenuRect;

    public static void main(String[] args) throws Exception {
        for (UIManager.LookAndFeelInfo laf :
                UIManager.getInstalledLookAndFeels()) {
            if (laf.getName().contains("GTK") || laf.getName().contains("Aqua")) {
                System.out.println("Testing: " + laf.getName());
                UIManager.setLookAndFeel(laf.getClassName());
                break;
            }
        }

        Robot robot = new Robot();
        robot.setAutoDelay(200);

        try {
            SwingUtilities.invokeAndWait(TestMenuMnemonicLinuxAndMac::createAndShowUI);
            robot.waitForIdle();
            robot.delay(1000);

            SwingUtilities.invokeAndWait(() -> {
                fileMenuRect = new Rectangle(fileMenu.getLocationOnScreen(),
                        fileMenu.getSize());
            });

            robot.keyPress(KeyEvent.VK_ALT);
            robot.waitForIdle();

            BufferedImage img1 = robot.createScreenCapture(fileMenuRect);

            robot.keyRelease(KeyEvent.VK_ALT);
            robot.waitForIdle();

            BufferedImage img2 = robot.createScreenCapture(fileMenuRect);

            if (Util.compareBufferedImages(img1, img2)) {
                try {
                    ImageIO.write(img1, "png", new File("Menu_With_Mnemonic.png"));
                    ImageIO.write(img2, "png", new File("Menu_Without_Mnemonic.png"));
                } catch (IOException ignored) {
                }
                throw new RuntimeException("Mismatch in mnemonic show/hide on Alt press");
            }
        } finally {
            SwingUtilities.invokeAndWait(() -> {
                if (frame != null) {
                    frame.dispose();
                }
            });
        }
    }

    private static void createAndShowUI() {
        frame = new JFrame("Test Menu Mnemonic Show/Hide");
        JMenuBar menuBar = new JMenuBar();
        fileMenu = new JMenu("File");
        fileMenu.setMnemonic(KeyEvent.VK_F);
        JMenuItem item1 = new JMenuItem("Item-1");
        JMenuItem item2 = new JMenuItem("Item-2");
        fileMenu.add(item1);
        fileMenu.add(item2);
        menuBar.add(fileMenu);
        frame.setJMenuBar(menuBar);
        frame.setSize(250, 200);
        frame.setLocationRelativeTo(null);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }
}