1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
/*
* Copyright (c) 1998, 2023, 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.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Label;
import java.awt.Panel;
/*
* @test
* @key headful
* @summary automated test for "displayable" property on Component
*/
public class Displayable extends Panel {
Label status = new Label("Displayable Test started...");
public void init() {
setLayout(new BorderLayout());
add("South", status);
LightDisplayable light = new LightDisplayable();
shouldNotBeDisplayable(light, "before added to container ");
HeavyDisplayable heavy = new HeavyDisplayable();
shouldNotBeDisplayable(heavy, "before added to container ");
add("West", light);
add("East", heavy);
statusMessage("Displayable test completed successfully.");
}
protected void addImpl(Component child, Object constraints, int index) {
super.addImpl(child, constraints, index);
if (isDisplayable()) {
shouldBeDisplayable(child, "after added to displayable container ");
} else {
shouldNotBeDisplayable(child, "after added to undisplayable container ");
}
}
public void remove(Component child) {
super.remove(child);
shouldNotBeDisplayable(child, "after removed from displayable container ");
}
public void statusMessage(String msg) {
status.setText(msg);
status.invalidate();
validate();
}
public static void shouldNotBeDisplayable(Component c, String why) {
if (c.isDisplayable()) {
throw new RuntimeException("Component is displayable "+why+c.getName());
}
}
public static void shouldBeDisplayable(Component c, String why) {
if (!c.isDisplayable()) {
throw new RuntimeException("Component is NOT displayable "+why+c.getName());
}
}
public static void main(String[] args) throws Exception {
EventQueue.invokeAndWait(() -> {
Frame f = new Frame();
try {
Displayable test = new Displayable();
test.init();
f.add("North", test);
f.pack();
} finally {
f.dispose();
}
});
}
}
class LightDisplayable extends Component {
public Dimension getPreferredSize() {
return new Dimension(50,50);
}
public void paint(Graphics g) {
Dimension size = getSize();
g.setColor(Color.blue);
g.fillRect(0, 0, size.width, size.height);
super.paint(g);
}
public void addNotify() {
Displayable.shouldNotBeDisplayable(this, "before addNotify ");
super.addNotify();
Displayable.shouldBeDisplayable(this, "after addNotify ");
}
public void removeNotify() {
Displayable.shouldBeDisplayable(this, "before removeNotify ");
super.removeNotify();
Displayable.shouldNotBeDisplayable(this, "after removeNotify ");
}
}
class HeavyDisplayable extends Panel {
public Dimension getPreferredSize() {
return new Dimension(50, 50);
}
public void paint(Graphics g) {
Dimension size = getSize();
g.setColor(Color.black);
g.fillRect(0, 0, size.width, size.height);
super.paint(g);
}
public void addNotify() {
Displayable.shouldNotBeDisplayable(this, "before addNotify ");
super.addNotify();
Displayable.shouldBeDisplayable(this, "after addNotify ");
}
public void removeNotify() {
Displayable.shouldBeDisplayable(this, "before removeNotify ");
super.removeNotify();
Displayable.shouldNotBeDisplayable(this, "after removeNotify ");
}
}
|
