1 /*
2 * Copyright (c) 2010, 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 @test
26 @bug 6424157
27 @author Artem Ananiev: area=eventqueue
28 @run main PreserveDispatchThread
29 */
30
31 import java.awt.*;
32 import java.awt.event.*;
33
34 public class PreserveDispatchThread {
35
36 private static volatile Frame f;
37 private static volatile Dialog d;
38
39 private static volatile boolean isEDT = true;
40
41 public static void main(String[] args) throws Exception {
42 f = new Frame("F");
43 f.setSize(320, 340);
44 f.setLocationRelativeTo(null);
45 f.setVisible(true);
46
47 try {
48 test1();
49 if (!isEDT) {
50 throw new RuntimeException("Test FAILED (test1): event dispatch thread is changed");
51 }
52
53 test2();
54 if (!isEDT) {
55 throw new RuntimeException("Test FAILED (test2): event dispatch thread is changed");
56 }
57
58 test3();
59 if (!isEDT) {
60 throw new RuntimeException("Test FAILED (test3): event dispatch thread is changed");
61 }
62 } finally {
63 if (d != null) {
64 d.dispose();
65 }
66 f.dispose();
67 }
68 }
69
70 /*
71 * Tests that push/pop doesn't change the dispatch thread if
72 * called on EDT.
73 */
74 private static void test1() throws Exception {
75 EventQueue.invokeAndWait(new Runnable() {
76 @Override
77 public void run() {
78 TestEventQueue teq = new TestEventQueue();
79 EventQueue seq = Toolkit.getDefaultToolkit().getSystemEventQueue();
80 try {
81 seq.push(teq);
82 d = new TestDialog();
83 d.setVisible(true);
84 checkEDT();
85 } finally {
86 teq.pop();
87 }
88 checkEDT();
89 }
90 });
91 }
92
93 /*
94 * Tests that push/pop doesn't change the dispatch thread if
95 * called on the main thread.
96 */
97 private static void test2() throws Exception {
98 TestEventQueue teq = new TestEventQueue();
99 EventQueue seq = Toolkit.getDefaultToolkit().getSystemEventQueue();
100 try {
101 seq.push(teq);
102 EventQueue.invokeAndWait(new Runnable() {
103 @Override
104 public void run() {
105 checkEDT();
106 d = new TestDialog();
107 d.setVisible(true);
108 checkEDT();
109 }
110 });
111 } finally {
112 teq.pop();
113 }
114 }
115
116 private static final Object test3Lock = new Object();
117 private static boolean test3Sync = false;
118
119 /*
120 * A complex test: several nested invokeLater() are called and
121 * in every runnable a check for EDT is performed. At the ent
122 * of the test we wait for all the runnables to be processed
123 * and the dialog is disposed; otherwise the last EDT check can
124 * be later than this method returns and the whole test is passed.
125 */
126 private static void test3() throws Exception {
127 EventQueue.invokeLater(new Runnable() {
128 @Override
129 public void run() {
130 d = new Dialog(f, true);
131 d.setSize(240, 180);
132 d.setLocationRelativeTo(f);
133 EventQueue.invokeLater(new Runnable() {
134 @Override
135 public void run() {
136 d.setVisible(true);
137 checkEDT();
138 }
139 });
140 EventQueue.invokeLater(new Runnable() {
141 @Override
142 public void run() {
143 TestEventQueue teq = new TestEventQueue();
144 EventQueue seq = Toolkit.getDefaultToolkit().getSystemEventQueue();
145 try {
146 seq.push(teq);
147 checkEDT();
148 EventQueue.invokeLater(new Runnable() {
149 @Override
150 public void run() {
151 d.dispose();
152 checkEDT();
153 synchronized (test3Lock) {
154 test3Sync = true;
155 test3Lock.notify();
156 }
157 }
158 });
159 } finally {
160 teq.pop();
161 }
162 checkEDT();
163 }
164 });
165 checkEDT();
166 }
167 });
168 synchronized (test3Lock) {
169 while (!test3Sync) {
170 try {
171 test3Lock.wait();
172 } catch (InterruptedException ie) {
173 break;
174 }
175 }
176 }
177 // Make sure all the nested invokeLater/invokeAndWait are processed
178 EventQueue.invokeAndWait(new Runnable() {
179 @Override
180 public void run() {
181 }
182 });
183 }
184
185 private static void checkEDT() {
186 isEDT = isEDT && EventQueue.isDispatchThread();
187 }
188
189 private static class TestEventQueue extends EventQueue {
190 public TestEventQueue() {
191 super();
192 }
193 public void pop() {
194 super.pop();
195 }
196 }
197
198 private static class TestDialog extends Dialog {
199 private volatile boolean dialogShown = false;
200 private volatile boolean paintCalled = false;
201 public TestDialog() {
202 super(f, true);
203 setSize(240, 180);
204 setLocationRelativeTo(f);
205 addComponentListener(new ComponentAdapter() {
206 @Override
207 public void componentShown(ComponentEvent e) {
208 if (paintCalled) {
209 dispose();
210 }
211 dialogShown = true;
212 }
213 });
214 }
215 @Override
216 public void paint(Graphics g) {
217 if (dialogShown) {
218 dispose();
219 }
220 paintCalled = true;
221 }
222 }
223
224 }