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/*
* Copyright (c) 2018, 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.
*/
import java.awt.EventQueue;
import java.awt.GraphicsEnvironment;
import java.awt.Toolkit;
import java.lang.reflect.Method;
import java.util.concurrent.CountDownLatch;
import javax.swing.JButton;
import javax.swing.JFrame;
import sun.awt.DisplayChangedListener;
import sun.awt.SunToolkit;
/**
* @test
* @key headful
* @bug 8207070
* @modules java.desktop/sun.java2d
* java.desktop/sun.awt
*/
public final class DisplayChangesException {
private static boolean fail;
private static CountDownLatch go = new CountDownLatch(1);
static final class TestThread extends Thread {
private JFrame frame;
private TestThread(ThreadGroup tg, String threadName) {
super(tg, threadName);
}
public void run() {
try {
test();
} catch (final Exception e) {
throw new RuntimeException(e);
}
}
private void test() throws Exception {
SunToolkit.createNewAppContext();
EventQueue.invokeAndWait(() -> {
frame = new JFrame();
final JButton b = new JButton();
b.addPropertyChangeListener(evt -> {
if (!SunToolkit.isDispatchThreadForAppContext(b)) {
System.err.println("Wrong thread:" + currentThread());
fail = true;
}
});
frame.add(b);
frame.setSize(100, 100);
frame.setLocationRelativeTo(null);
frame.pack();
});
go.await();
EventQueue.invokeAndWait(() -> {
frame.dispose();
});
}
}
public static void main(final String[] args) throws Exception {
ThreadGroup tg0 = new ThreadGroup("ThreadGroup0");
ThreadGroup tg1 = new ThreadGroup("ThreadGroup1");
TestThread t0 = new TestThread(tg0, "TestThread 0");
TestThread t1 = new TestThread(tg1, "TestThread 1");
t0.start();
t1.start();
Thread.sleep(1500); // Cannot use Robot.waitForIdle
testToolkit();
Thread.sleep(1500);
testGE();
Thread.sleep(1500);
go.countDown();
if (fail) {
throw new RuntimeException();
}
}
private static void testGE() {
Object ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
if (!(ge instanceof DisplayChangedListener)) {
return;
}
((DisplayChangedListener) ge).displayChanged();
}
private static void testToolkit() {
final Class toolkit;
try {
toolkit = Class.forName("sun.awt.windows.WToolkit");
} catch (final ClassNotFoundException ignored) {
return;
}
try {
final Method displayChanged = toolkit.getMethod("displayChanged");
displayChanged.invoke(Toolkit.getDefaultToolkit());
} catch (final Exception e) {
e.printStackTrace();
fail = true;
}
}
}
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