1 /*
2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24
25 /*
26 @test
27 @bug 8043610
28 @summary Tests that JComponent invalidate, revalidate and repaint methods could
29 be called from any thread
30 @author Petr Pchelko
31 */
32
33 import sun.awt.SunToolkit;
34
35 import javax.swing.*;
36 import java.awt.*;
37 import java.util.concurrent.CountDownLatch;
38 import java.util.concurrent.atomic.AtomicReference;
39
40 public class bug8043610 {
41 private static volatile JFrame frame;
42 private static volatile JComponent component;
43
44 public static void main(String[] args) throws Exception {
45 ThreadGroup stubTG = new ThreadGroup(getRootThreadGroup(), "Stub Thread Group");
46 ThreadGroup swingTG = new ThreadGroup(getRootThreadGroup(), "SwingTG");
47 try {
48 Thread stubThread = new Thread(stubTG, SunToolkit::createNewAppContext);
49 stubThread.start();
50 stubThread.join();
51
52 CountDownLatch startSwingLatch = new CountDownLatch(1);
53 new Thread(swingTG, () -> {
54 SunToolkit.createNewAppContext();
55 SwingUtilities.invokeLater(() -> {
56 frame = new JFrame();
57 component = new JLabel("Test Text");
58 frame.add(component);
59 frame.setBounds(100, 100, 100, 100);
60 frame.setVisible(true);
61 startSwingLatch.countDown();
62 });
63 }).start();
64 startSwingLatch.await();
65
66 AtomicReference<Exception> caughtException = new AtomicReference<>();
67 Thread checkThread = new Thread(getRootThreadGroup(), () -> {
68 try {
69 component.invalidate();
70 component.revalidate();
71 component.repaint(new Rectangle(0, 0, 0, 0));
72 } catch (Exception e) {
73 caughtException.set(e);
74 }
75 });
76 checkThread.start();
77 checkThread.join();
78
79 if (caughtException.get() != null) {
80 throw new RuntimeException("Failed. Caught exception!", caughtException.get());
81 }
82 } finally {
83 new Thread(swingTG, () -> SwingUtilities.invokeLater(() -> {
84 if (frame != null) {
85 frame.dispose();
86 }
87 })).start();
88 }
89 }
90
91 private static ThreadGroup getRootThreadGroup() {
92 ThreadGroup currentTG = Thread.currentThread().getThreadGroup();
93 ThreadGroup parentTG = currentTG.getParent();
94 while (parentTG != null) {
95 currentTG = parentTG;
96 parentTG = currentTG.getParent();
97 }
98 return currentTG;
99 }
100 }