jdk/test/javax/swing/JComponent/8043610/bug8043610.java
changeset 25104 9a002d75bd42
child 31448 1066345d2a8a
equal deleted inserted replaced
25103:4dcb7cd7652e 25104:9a002d75bd42
       
     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 }