1 /*
2 * Copyright (c) 2016, 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 /* @test
25 @bug 8139581
26 @summary AWT components are not drawn after removal and addition to a container
27 @author Anton Litvinov
28 */
29
30 import java.awt.Button;
31 import java.awt.Color;
32 import java.awt.Canvas;
33 import java.awt.Frame;
34 import java.awt.Graphics;
35 import java.awt.Panel;
36 import java.util.ArrayList;
37
38 public class ComponentIsNotDrawnAfterRemoveAddTest {
39 private final Frame frame;
40 private final Panel panel;
41 private final ArrayList<Testable> compList = new ArrayList<Testable>();
42
43 public ComponentIsNotDrawnAfterRemoveAddTest() {
44 frame = new Frame("ComponentIsNotDrawnAfterRemoveAddTest");
45 frame.setSize(500, 500);
46 frame.setLocation(200, 200);
47 frame.setLayout(null);
48 frame.setBackground(Color.RED);
49
50 panel = new Panel();
51 panel.setLayout(null);
52 panel.setBounds(25, 100, 455, 295);
53 panel.setBackground(Color.GREEN);
54
55 for (int i = 0; i < 10; i++) {
56 TestCanvas canv1 = new TestCanvas();
57 canv1.setBounds(i * 45 + 5, 15, 30 + i, 30 + i);
58 panel.add(canv1);
59 compList.add(canv1);
60
61 TestButton btn1 = new TestButton();
62 btn1.setBounds(i * 45 + 5, 60, 30 + i, 30 + i);
63 panel.add(btn1);
64 compList.add(btn1);
65
66 TestCanvas canv2 = new TestCanvas();
67 canv2.setBounds(i * 45 + 5, 105, 30 + i, 30 + i);
68 panel.add(canv2);
69 compList.add(canv2);
70
71 TestButton btn2 = new TestButton();
72 btn2.setBounds(i * 45 + 5, 150, 30 + i, 30 + i);
73 panel.add(btn2);
74 compList.add(btn2);
75
76 TestCanvas canv3 = new TestCanvas();
77 canv3.setBounds(i * 45 + 5, 195, 30 + i, 30 + i);
78 panel.add(canv3);
79 compList.add(canv3);
80
81 TestButton btn3 = new TestButton();
82 btn3.setBounds(i * 45 + 5, 240, 30 + i, 30 + i);
83 panel.add(btn3);
84 compList.add(btn3);
85 }
86
87 frame.add(panel);
88 frame.setVisible(true);
89 }
90
91 private void runTest() {
92 try {
93 doSleep(1500);
94 checkTestableComponents();
95
96 for (int i = 0; i < 5; i++) {
97 System.err.println(String.format("Test iteration #%d:", i));
98
99 frame.remove(panel);
100 frame.invalidate();
101 frame.validate();
102 frame.add(panel);
103
104 doSleep(1500);
105 checkTestableComponents();
106 }
107 } finally {
108 frame.dispose();
109 }
110 }
111
112 private void doSleep(long millis) {
113 try {
114 Thread.sleep(millis);
115 } catch (InterruptedException ie) {
116 ie.printStackTrace();
117 }
118 }
119
120 private void checkTestableComponents() throws RuntimeException {
121 int notDrawnCompsCount = 0;
122 for (Testable comp : compList) {
123 if (!comp.wasPaintCalled()) {
124 notDrawnCompsCount++;
125 } else {
126 comp.resetPaintCalledFlag();
127 }
128 }
129 if (notDrawnCompsCount > 0) {
130 throw new RuntimeException(String.format(
131 "'paint' method of %d components was not called.", notDrawnCompsCount));
132 }
133 }
134
135 private interface Testable {
136 boolean wasPaintCalled();
137 void resetPaintCalledFlag();
138 }
139
140 private static class TestCanvas extends Canvas implements Testable {
141 private volatile boolean paintWasCalled = false;
142
143 @Override
144 public void paint(Graphics g) {
145 paintWasCalled = true;
146 super.paint(g);
147 g.setColor(Color.BLUE);
148 g.fillRect(0, 0, getWidth(), getHeight());
149 }
150
151 @Override
152 public boolean wasPaintCalled() {
153 return paintWasCalled;
154 }
155
156 @Override
157 public void resetPaintCalledFlag() {
158 paintWasCalled = false;
159 }
160 }
161
162 private static class TestButton extends Button implements Testable {
163 private volatile boolean paintWasCalled = false;
164
165 @Override
166 public void paint(Graphics g) {
167 paintWasCalled = true;
168 super.paint(g);
169 g.setColor(Color.YELLOW);
170 g.fillRect(0, 0, 15, 15);
171 }
172
173 @Override
174 public boolean wasPaintCalled() {
175 return paintWasCalled;
176 }
177
178 @Override
179 public void resetPaintCalledFlag() {
180 paintWasCalled = false;
181 }
182 }
183
184 public static void main(String[] args) {
185 new ComponentIsNotDrawnAfterRemoveAddTest().runTest();
186 }
187 }