test/jdk/java/awt/im/8041990/bug8041990.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is free software; you can redistribute it and/or modify it
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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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/**
 * @test
 * @key headful
 * @bug 8041990
 * @summary Language specific keys does not work in applets when opened outside the browser
 * @author Petr Pchelko
 * @modules java.desktop/sun.awt
 */

import sun.awt.SunToolkit;

import javax.swing.*;
import java.awt.*;
import java.awt.event.InputMethodEvent;
import java.awt.font.TextHitInfo;
import java.text.AttributedString;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicReference;

public class bug8041990 {
    private static JFrame frame;
    private static JComponent component;

    public static void main(String[] args) throws Exception {
        ThreadGroup stubTG = new ThreadGroup(getRootThreadGroup(), "Stub Thread Group");
        ThreadGroup swingTG = new ThreadGroup(getRootThreadGroup(), "SwingTG");
        try {
            Thread stubThread = new Thread(stubTG, SunToolkit::createNewAppContext);
            stubThread.start();
            stubThread.join();

            CountDownLatch startSwingLatch = new CountDownLatch(1);
            new Thread(swingTG, () -> {
                SunToolkit.createNewAppContext();
                SwingUtilities.invokeLater(() -> {
                    frame = new JFrame();
                    component = new JLabel("Test Text");
                    frame.add(component);
                    frame.setBounds(100, 100, 100, 100);
                    frame.setVisible(true);
                    startSwingLatch.countDown();
                });
            }).start();
            startSwingLatch.await();

            AtomicReference<Exception> caughtException = new AtomicReference<>();
            Thread checkThread = new Thread(getRootThreadGroup(), () -> {
                try {
                    // If the bug is present this will throw exception
                    new InputMethodEvent(component,
                            InputMethodEvent.CARET_POSITION_CHANGED,
                            TextHitInfo.leading(0),
                            TextHitInfo.trailing(0));
                } catch (Exception e) {
                    caughtException.set(e);
                }
            });
            checkThread.start();
            checkThread.join();

            if (caughtException.get() != null) {
                throw new RuntimeException("Failed. Caught exception!", caughtException.get());
            }
        } finally {
            new Thread(swingTG, () -> SwingUtilities.invokeLater(() -> {
                if (frame != null) {
                    frame.dispose();
                }
            })).start();
        }
    }

    private static ThreadGroup getRootThreadGroup() {
        ThreadGroup currentTG = Thread.currentThread().getThreadGroup();
        ThreadGroup parentTG = currentTG.getParent();
        while (parentTG != null) {
            currentTG = parentTG;
            parentTG = currentTG.getParent();
        }
        return currentTG;
    }
}