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
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
/*
* Copyright (c) 2002, 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.AWTEvent;
import java.awt.Component;
import java.awt.Dialog;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Frame;
import java.awt.Point;
import java.awt.Robot;
import java.awt.datatransfer.StringSelection;
import java.awt.datatransfer.Transferable;
import java.awt.dnd.DnDConstants;
import java.awt.dnd.DragGestureEvent;
import java.awt.dnd.DragGestureListener;
import java.awt.dnd.DragGestureRecognizer;
import java.awt.dnd.DragSource;
import java.awt.dnd.DragSourceAdapter;
import java.awt.dnd.DragSourceDropEvent;
import java.awt.dnd.DragSourceListener;
import java.awt.dnd.DropTarget;
import java.awt.dnd.DropTargetAdapter;
import java.awt.dnd.DropTargetDropEvent;
import java.awt.dnd.DropTargetListener;
import java.awt.event.AWTEventListener;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;
/*
@test
@bug 4633417
@summary tests that drag operation doesn't cause hang when a modal dialog is
shown
@key headful
@run main ModalDialogDeadlockTest
*/
public class ModalDialogDeadlockTest implements AWTEventListener {
volatile Frame frame;
volatile Dialog dialog;
volatile Point dstPoint;
volatile Point srcPoint;
volatile Dimension d;
volatile DragSource dragSource;
volatile Transferable transferable;
volatile DragSourceListener dsl;
volatile DragGestureListener dgl;
volatile DragGestureRecognizer dgr;
volatile DropTarget dt;
static final Object SYNC_LOCK = new Object();
static final int FRAME_ACTIVATION_TIMEOUT = 2000;
static final int MOUSE_RELEASE_TIMEOUT = 1000;
Component clickedComponent = null;
public static void main(String[] args) throws Exception {
ModalDialogDeadlockTest test = new ModalDialogDeadlockTest();
EventQueue.invokeAndWait(test::init);
try {
test.start();
} finally {
EventQueue.invokeAndWait(() -> {
if (test.frame != null) {
test.frame.dispose();
}
});
}
}
public void init() {
frame = new Frame("ModalDialogDeadlockTest");
frame.setBounds(100, 100, 200, 200);
dialog = new Dialog(frame, "Dialog", true);
dialog.setBounds(350, 100, 200, 200);
dragSource = DragSource.getDefaultDragSource();
transferable = new StringSelection("TEXT");
dsl = new DragSourceAdapter() {
public void dragDropEnd(DragSourceDropEvent dsde) {
synchronized (SYNC_LOCK) {
SYNC_LOCK.notifyAll();
}
}
};
dgl = new DragGestureListener() {
public void dragGestureRecognized(DragGestureEvent dge) {
dge.startDrag(null, transferable, dsl);
}
};
dgr = dragSource.createDefaultDragGestureRecognizer(dialog,
DnDConstants.ACTION_COPY,
dgl);
final DropTargetListener dtl = new DropTargetAdapter() {
public void drop(DropTargetDropEvent dtde) {
dtde.rejectDrop();
dialog.dispose();
}
};
dt = new DropTarget(frame, dtl);
frame.getToolkit().addAWTEventListener(this, AWTEvent.MOUSE_EVENT_MASK);
frame.setVisible(true);
}
public static int sign(int n) {
return n < 0 ? -1 : n == 0 ? 0 : 1;
}
public void start() throws Exception {
final Robot robot = new Robot();
robot.delay(FRAME_ACTIVATION_TIMEOUT);
EventQueue.invokeAndWait(() -> {
dstPoint = frame.getLocationOnScreen();
d = frame.getSize();
});
dstPoint.translate(d.width / 2, d.height / 2);
if (!pointInComponent(robot, dstPoint, frame)) {
System.err.println("WARNING: Couldn't locate frame.");
return;
}
EventQueue.invokeLater(() -> {
dialog.setVisible(true);
});
robot.delay(FRAME_ACTIVATION_TIMEOUT);
EventQueue.invokeAndWait(() -> {
srcPoint = dialog.getLocationOnScreen();
d = dialog.getSize();
});
srcPoint.translate(d.width / 2, d.height / 2);
if (!pointInComponent(robot, srcPoint, dialog)) {
System.err.println("WARNING: Couldn't locate dialog.");
return;
}
robot.mouseMove(srcPoint.x, srcPoint.y);
robot.mousePress(InputEvent.BUTTON1_MASK);
for (;!srcPoint.equals(dstPoint);
srcPoint.translate(sign(dstPoint.x - srcPoint.x),
sign(dstPoint.y - srcPoint.y))) {
robot.mouseMove(srcPoint.x, srcPoint.y);
robot.delay(50);
}
synchronized (SYNC_LOCK) {
robot.mouseRelease(InputEvent.BUTTON1_MASK);
SYNC_LOCK.wait();
}
}
public void reset() {
clickedComponent = null;
}
public void eventDispatched(AWTEvent e) {
if (e.getID() == MouseEvent.MOUSE_RELEASED) {
clickedComponent = (Component)e.getSource();
synchronized (SYNC_LOCK) {
SYNC_LOCK.notifyAll();
}
}
}
boolean pointInComponent(Robot robot, Point p, Component comp)
throws InterruptedException {
robot.waitForIdle();
reset();
robot.mouseMove(p.x, p.y);
robot.mousePress(InputEvent.BUTTON1_MASK);
synchronized (SYNC_LOCK) {
robot.mouseRelease(InputEvent.BUTTON1_MASK);
SYNC_LOCK.wait(MOUSE_RELEASE_TIMEOUT);
}
Component c = clickedComponent;
while (c != null && c != comp) {
c = c.getParent();
}
return c == comp;
}
}
|
