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 * @test
26 * @key headful
27 * @bug 8024061
28 * @summary Checks that no exception is thrown if dragGestureRecognized
29 * takes a while to complete.
30 */
31 import sun.awt.OSInfo;
32 import sun.awt.OSInfo.OSType;
33 import sun.awt.SunToolkit;
34
35 import java.awt.*;
36 import java.awt.datatransfer.DataFlavor;
37 import java.awt.datatransfer.Transferable;
38 import java.awt.datatransfer.UnsupportedFlavorException;
39 import java.awt.dnd.DnDConstants;
40 import java.awt.dnd.DragGestureEvent;
41 import java.awt.dnd.DragGestureListener;
42 import java.awt.dnd.DragSource;
43 import java.awt.dnd.DragSourceDragEvent;
44 import java.awt.dnd.DragSourceDropEvent;
45 import java.awt.dnd.DragSourceEvent;
46 import java.awt.dnd.DragSourceListener;
47 import java.awt.dnd.DropTarget;
48 import java.awt.dnd.DropTargetDragEvent;
49 import java.awt.dnd.DropTargetDropEvent;
50 import java.awt.dnd.DropTargetEvent;
51 import java.awt.dnd.DropTargetListener;
52 import java.awt.event.InputEvent;
53
54 import java.io.IOException;
55 import java.lang.reflect.InvocationTargetException;
56 import java.util.concurrent.CountDownLatch;
57 import java.util.concurrent.TimeUnit;
58
59 import javax.swing.*;
60
61 /**
62 * If dragGestureRecognized() takes a while to complete and if user performs a drag quickly,
63 * an exception is thrown from DropTargetListener.dragEnter when it calls
64 * DropTargetDragEvent.getTransferable().
65 * <p>
66 * This class introduces a delay in dragGestureRecognized() to cause the exception.
67 */
68 public class bug8024061 {
69 private static final DataFlavor DropObjectFlavor;
70 private static final int DELAY = 1000;
71
72 private final DnDPanel panel1 = new DnDPanel(Color.yellow);
73 private final DnDPanel panel2 = new DnDPanel(Color.pink);
74 private final JFrame frame;
75
76 private static final CountDownLatch lock = new CountDownLatch(1);
77 private static volatile Exception dragEnterException = null;
78
79 static {
80 DataFlavor flavor = null;
81 try {
82 flavor = new DataFlavor(DataFlavor.javaJVMLocalObjectMimeType);
83 } catch (ClassNotFoundException e) {
84 e.printStackTrace();
85 }
86 DropObjectFlavor = flavor;
87 }
88
89 bug8024061() {
90 frame = new JFrame("DnDWithRobot");
91 frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
92
93 Dimension d = new Dimension(100, 100);
94
95 panel1.setPreferredSize(d);
96 panel2.setPreferredSize(d);
97
98 Container content = frame.getContentPane();
99 content.setLayout(new GridLayout(1, 2, 5, 5));
100 content.add(panel1);
101 content.add(panel2);
102
103 frame.pack();
104
105 DropObject drop = new DropObject();
106 drop.place(panel1, new Point(10, 10));
107 frame.setVisible(true);
108 }
109
110 public static void main(String[] args) throws AWTException, InvocationTargetException, InterruptedException {
111 OSType type = OSInfo.getOSType();
112 if (type != OSType.LINUX && type != OSType.SOLARIS) {
113 System.out.println("This test is for Linux and Solaris only... " +
114 "skipping!");
115 return;
116 }
117
118 final bug8024061[] dnd = {null};
119 SwingUtilities.invokeAndWait(new Runnable() {
120 @Override
121 public void run() {
122 dnd[0] = new bug8024061();
123 }
124 });
125 final Robot robot = new Robot();
126 robot.setAutoDelay(10);
127 SunToolkit toolkit = (SunToolkit) Toolkit.getDefaultToolkit();
128 toolkit.realSync();
129
130 JFrame frame = dnd[0].frame;
131 Point point = frame.getLocationOnScreen();
132 Point here = new Point(point.x + 35, point.y + 45);
133 Point there = new Point(point.x + 120, point.y + 45);
134 here.x += 25;
135 robot.mouseMove(here.x, here.y);
136 robot.mousePress(InputEvent.BUTTON1_MASK);
137 while (here.x < there.x) {
138 here.x += 20;
139 robot.mouseMove(here.x, here.y);
140 System.out.println("x = " + here.x);
141 }
142 robot.mouseRelease(InputEvent.BUTTON1_MASK);
143 toolkit.realSync();
144 robot.mousePress(InputEvent.BUTTON1_MASK);
145 robot.mouseRelease(InputEvent.BUTTON1_MASK);
146 System.out.println("finished");
147
148 try {
149 if (lock.await(5, TimeUnit.SECONDS)) {
150 if (dragEnterException == null) {
151 System.out.println("Test passed.");
152 } else {
153 System.out.println("Test failed.");
154 dragEnterException.printStackTrace();
155 throw new RuntimeException(dragEnterException);
156 }
157 } else {
158 System.out.println("Test failed. Timeout reached");
159 throw new RuntimeException("Timed out waiting for dragEnter()");
160 }
161 } finally {
162 frame.dispose();
163 }
164 }
165
166 class DropObject implements Transferable {
167 DnDPanel panel;
168 Color color = Color.CYAN;
169 int width = 50;
170 int height = 50;
171 int x;
172 int y;
173
174 void draw(Graphics2D g) {
175 Color savedColor = g.getColor();
176 g.setColor(color);
177 g.fillRect(x, y, width, height);
178 g.setColor(Color.lightGray);
179 g.drawRect(x, y, width, height);
180 g.setColor(savedColor);
181 }
182
183 boolean contains(int x, int y) {
184 return (x > this.x && x < this.x + width)
185 && (y > this.y && y < this.y + height);
186 }
187
188 @Override
189 public DataFlavor[] getTransferDataFlavors() {
190 return new DataFlavor[]{DropObjectFlavor};
191 }
192
193 void place(DnDPanel panel, Point location) {
194 if (panel != this.panel) {
195 x = location.x;
196 y = location.y;
197 if (this.panel != null) {
198 this.panel.setDropObject(null);
199 this.panel.repaint();
200 }
201 this.panel = panel;
202 this.panel.setDropObject(this);
203 this.panel.repaint();
204 }
205 }
206
207 @Override
208 public boolean isDataFlavorSupported(DataFlavor flavor) {
209 return DropObjectFlavor.equals(flavor);
210 }
211
212 @Override
213 public Object getTransferData(DataFlavor flavor)
214 throws UnsupportedFlavorException, IOException {
215 if (isDataFlavorSupported(flavor)) {
216 return this;
217 } else {
218 throw new UnsupportedFlavorException(flavor);
219 }
220 }
221 }
222
223 class DnDPanel extends JPanel {
224 DropObject dropObject;
225 final DragSource dragSource;
226 final DropTarget dropTarget;
227 final Color color;
228 final DragGestureListener dgListener;
229 final DragSourceListener dsListener;
230 final DropTargetListener dtListener;
231
232 DnDPanel(Color color) {
233 this.color = color;
234 this.dragSource = DragSource.getDefaultDragSource();
235 dgListener = new DragGestureListener() {
236 @Override
237 public void dragGestureRecognized(DragGestureEvent dge) {
238 Point location = dge.getDragOrigin();
239 if (dropObject != null && dropObject.contains(location.x, location.y)) {
240 dragSource.startDrag(dge, DragSource.DefaultCopyNoDrop, dropObject, dsListener);
241 try {
242 Thread.sleep(DELAY);
243 } catch (InterruptedException e) {
244 }
245 }
246 }
247 };
248
249 dsListener = new DragSourceListener() {
250 @Override
251 public void dragEnter(DragSourceDragEvent dsde) {
252 }
253
254 @Override
255 public void dragOver(DragSourceDragEvent dsde) {
256 }
257
258 @Override
259 public void dropActionChanged(DragSourceDragEvent dsde) {
260 }
261
262 @Override
263 public void dragExit(DragSourceEvent dse) {
264 }
265
266 @Override
267 public void dragDropEnd(DragSourceDropEvent dsde) {
268 }
269 };
270
271 dtListener = new DropTargetListener() {
272 @Override
273 public void dragEnter(DropTargetDragEvent dtde) {
274 if (dropObject != null) {
275 dtde.rejectDrag();
276 return;
277 }
278 dtde.acceptDrag(DnDConstants.ACTION_MOVE);
279 try {
280 Transferable t = dtde.getTransferable();
281 Object data = t.getTransferData(DropObjectFlavor);
282 } catch (Exception e) {
283 dragEnterException = e;
284 e.printStackTrace();
285 } finally {
286 lock.countDown();
287 }
288 }
289
290 @Override
291 public void dragOver(DropTargetDragEvent dtde) {
292 if (dropObject != null) {
293 dtde.rejectDrag();
294 return;
295 }
296 dtde.acceptDrag(DnDConstants.ACTION_MOVE);
297 }
298
299 @Override
300 public void dropActionChanged(DropTargetDragEvent dtde) {
301 }
302
303 @Override
304 public void dragExit(DropTargetEvent dte) {
305 }
306
307 @Override
308 public void drop(DropTargetDropEvent dtde) {
309 if (dropObject != null) {
310 dtde.rejectDrop();
311 return;
312 }
313 try {
314 dtde.acceptDrop(DnDConstants.ACTION_MOVE);
315 Transferable t = dtde.getTransferable();
316 DropObject dropObject = (DropObject) t.getTransferData(DropObjectFlavor);
317 Point location = dtde.getLocation();
318 dropObject.place(DnDPanel.this, location);
319 dtde.dropComplete(true);
320 } catch (Exception e) {
321 e.printStackTrace();
322 }
323
324 }
325 };
326
327 dragSource.createDefaultDragGestureRecognizer(this,
328 DnDConstants.ACTION_MOVE, dgListener);
329
330 dropTarget = new DropTarget(this, DnDConstants.ACTION_MOVE, dtListener, true);
331
332 }
333
334 public void paintComponent(Graphics g) {
335 super.paintComponent(g);
336 Color savedColor = g.getColor();
337 g.setColor(color);
338 g.fillRect(0, 0, getWidth(), getHeight());
339 g.setColor(savedColor);
340 if (dropObject != null) {
341 dropObject.draw((Graphics2D) g);
342 }
343 }
344
345 void setDropObject(DropObject dropObject) {
346 this.dropObject = dropObject;
347 }
348
349 DropObject findDropObject(int x, int y) {
350 if (dropObject != null && dropObject.contains(x, y)) {
351 return dropObject;
352 }
353 return null;
354 }
355 }
356 }