author | denis |
Wed, 01 Dec 2010 17:25:12 +0300 | |
changeset 7493 | 010ad57ed8d1 |
parent 5506 | 202f599c92aa |
child 7668 | d4a77089c587 |
permissions | -rw-r--r-- |
2 | 1 |
/* |
5506 | 2 |
* Copyright (c) 2000, 2007, Oracle and/or its affiliates. All rights reserved. |
2 | 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 |
|
5506 | 7 |
* published by the Free Software Foundation. Oracle designates this |
2 | 8 |
* particular file as subject to the "Classpath" exception as provided |
5506 | 9 |
* by Oracle in the LICENSE file that accompanied this code. |
2 | 10 |
* |
11 |
* This code is distributed in the hope that it will be useful, but WITHOUT |
|
12 |
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
13 |
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
14 |
* version 2 for more details (a copy is included in the LICENSE file that |
|
15 |
* accompanied this code). |
|
16 |
* |
|
17 |
* You should have received a copy of the GNU General Public License version |
|
18 |
* 2 along with this work; if not, write to the Free Software Foundation, |
|
19 |
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
|
20 |
* |
|
5506 | 21 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
22 |
* or visit www.oracle.com if you need additional information or have any |
|
23 |
* questions. |
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2 | 24 |
*/ |
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26 |
package sun.awt.dnd; |
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27 |
||
28 |
import java.awt.Component; |
|
29 |
import java.awt.Point; |
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30 |
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31 |
import java.awt.datatransfer.DataFlavor; |
|
32 |
import java.awt.datatransfer.Transferable; |
|
33 |
import java.awt.datatransfer.UnsupportedFlavorException; |
|
34 |
||
35 |
import java.awt.dnd.DnDConstants; |
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36 |
||
37 |
import java.awt.dnd.DropTarget; |
|
38 |
import java.awt.dnd.DropTargetContext; |
|
39 |
import java.awt.dnd.DropTargetListener; |
|
40 |
import java.awt.dnd.DropTargetEvent; |
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41 |
import java.awt.dnd.DropTargetDragEvent; |
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42 |
import java.awt.dnd.DropTargetDropEvent; |
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43 |
import java.awt.dnd.InvalidDnDOperationException; |
|
44 |
||
45 |
import java.awt.dnd.peer.DropTargetContextPeer; |
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46 |
||
47 |
import java.util.HashSet; |
|
48 |
import java.util.Map; |
|
49 |
import java.util.Arrays; |
|
50 |
||
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51 |
import sun.util.logging.PlatformLogger; |
2 | 52 |
|
53 |
import java.io.IOException; |
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54 |
import java.io.InputStream; |
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55 |
||
56 |
import sun.awt.AppContext; |
|
57 |
import sun.awt.SunToolkit; |
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58 |
import sun.awt.datatransfer.DataTransferer; |
|
59 |
import sun.awt.datatransfer.ToolkitThreadBlockedHandler; |
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60 |
import sun.security.util.SecurityConstants; |
2 | 61 |
|
62 |
/** |
|
63 |
* <p> |
|
64 |
* The SunDropTargetContextPeer class is the generic class responsible for handling |
|
65 |
* the interaction between a windowing systems DnD system and Java. |
|
66 |
* </p> |
|
67 |
* |
|
68 |
* @since JDK1.3.1 |
|
69 |
* |
|
70 |
*/ |
|
71 |
||
72 |
public abstract class SunDropTargetContextPeer implements DropTargetContextPeer, Transferable { |
|
73 |
||
74 |
/* |
|
75 |
* A boolean constant that requires the peer to wait until the |
|
76 |
* SunDropTargetEvent is processed and return the status back |
|
77 |
* to the native code. |
|
78 |
*/ |
|
79 |
public static final boolean DISPATCH_SYNC = true; |
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80 |
private DropTarget currentDT; |
|
81 |
private DropTargetContext currentDTC; |
|
82 |
private long[] currentT; |
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83 |
private int currentA; // target actions |
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84 |
private int currentSA; // source actions |
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85 |
private int currentDA; // current drop action |
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86 |
private int previousDA; |
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87 |
||
88 |
private long nativeDragContext; |
|
89 |
||
90 |
private Transferable local; |
|
91 |
||
92 |
private boolean dragRejected = false; |
|
93 |
||
94 |
protected int dropStatus = STATUS_NONE; |
|
95 |
protected boolean dropComplete = false; |
|
96 |
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7493 | 97 |
// The flag is used to monitor whether the drop action is |
98 |
// handled by a user. That allows to distinct during |
|
99 |
// which operation getTransferData() method is invoked. |
|
100 |
boolean dropInProcess = false; |
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101 |
||
2 | 102 |
/* |
103 |
* global lock |
|
104 |
*/ |
|
105 |
||
106 |
protected static final Object _globalLock = new Object(); |
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107 |
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108 |
private static final PlatformLogger dndLog = PlatformLogger.getLogger("sun.awt.dnd.SunDropTargetContextPeer"); |
2 | 109 |
|
110 |
/* |
|
111 |
* a primitive mechanism for advertising intra-JVM Transferables |
|
112 |
*/ |
|
113 |
||
114 |
protected static Transferable currentJVMLocalSourceTransferable = null; |
|
115 |
||
116 |
public static void setCurrentJVMLocalSourceTransferable(Transferable t) throws InvalidDnDOperationException { |
|
117 |
synchronized(_globalLock) { |
|
118 |
if (t != null && currentJVMLocalSourceTransferable != null) { |
|
119 |
throw new InvalidDnDOperationException(); |
|
120 |
} else { |
|
121 |
currentJVMLocalSourceTransferable = t; |
|
122 |
} |
|
123 |
} |
|
124 |
} |
|
125 |
||
126 |
/** |
|
127 |
* obtain the transferable iff the operation is in the same VM |
|
128 |
*/ |
|
129 |
||
130 |
private static Transferable getJVMLocalSourceTransferable() { |
|
131 |
return currentJVMLocalSourceTransferable; |
|
132 |
} |
|
133 |
||
134 |
/* |
|
135 |
* constants used by dropAccept() or dropReject() |
|
136 |
*/ |
|
137 |
||
138 |
protected final static int STATUS_NONE = 0; // none pending |
|
139 |
protected final static int STATUS_WAIT = 1; // drop pending |
|
140 |
protected final static int STATUS_ACCEPT = 2; |
|
141 |
protected final static int STATUS_REJECT = -1; |
|
142 |
||
143 |
/** |
|
144 |
* create the peer |
|
145 |
*/ |
|
146 |
||
147 |
public SunDropTargetContextPeer() { |
|
148 |
super(); |
|
149 |
} |
|
150 |
||
151 |
/** |
|
152 |
* @return the DropTarget associated with this peer |
|
153 |
*/ |
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154 |
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155 |
public DropTarget getDropTarget() { return currentDT; } |
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156 |
||
157 |
/** |
|
158 |
* @param actions set the current actions |
|
159 |
*/ |
|
160 |
||
161 |
public synchronized void setTargetActions(int actions) { |
|
162 |
currentA = actions & |
|
163 |
(DnDConstants.ACTION_COPY_OR_MOVE | DnDConstants.ACTION_LINK); |
|
164 |
} |
|
165 |
||
166 |
/** |
|
167 |
* @return the current target actions |
|
168 |
*/ |
|
169 |
||
170 |
public int getTargetActions() { |
|
171 |
return currentA; |
|
172 |
} |
|
173 |
||
174 |
/** |
|
175 |
* get the Transferable associated with the drop |
|
176 |
*/ |
|
177 |
||
178 |
public Transferable getTransferable() { |
|
179 |
return this; |
|
180 |
} |
|
181 |
||
182 |
/** |
|
183 |
* @return current DataFlavors available |
|
184 |
*/ |
|
185 |
// NOTE: This method may be called by privileged threads. |
|
186 |
// DO NOT INVOKE CLIENT CODE ON THIS THREAD! |
|
187 |
||
188 |
public DataFlavor[] getTransferDataFlavors() { |
|
189 |
final Transferable localTransferable = local; |
|
190 |
||
191 |
if (localTransferable != null) { |
|
192 |
return localTransferable.getTransferDataFlavors(); |
|
193 |
} else { |
|
194 |
return DataTransferer.getInstance().getFlavorsForFormatsAsArray |
|
195 |
(currentT, DataTransferer.adaptFlavorMap |
|
196 |
(currentDT.getFlavorMap())); |
|
197 |
} |
|
198 |
} |
|
199 |
||
200 |
/** |
|
201 |
* @return if the flavor is supported |
|
202 |
*/ |
|
203 |
||
204 |
public boolean isDataFlavorSupported(DataFlavor df) { |
|
205 |
Transferable localTransferable = local; |
|
206 |
||
207 |
if (localTransferable != null) { |
|
208 |
return localTransferable.isDataFlavorSupported(df); |
|
209 |
} else { |
|
210 |
return DataTransferer.getInstance().getFlavorsForFormats |
|
211 |
(currentT, DataTransferer.adaptFlavorMap |
|
212 |
(currentDT.getFlavorMap())). |
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213 |
containsKey(df); |
|
214 |
} |
|
215 |
} |
|
216 |
||
217 |
/** |
|
218 |
* @return the data |
|
219 |
*/ |
|
220 |
||
221 |
public Object getTransferData(DataFlavor df) |
|
222 |
throws UnsupportedFlavorException, IOException, |
|
223 |
InvalidDnDOperationException |
|
224 |
{ |
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225 |
|
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226 |
SecurityManager sm = System.getSecurityManager(); |
506ebd065f86
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|
227 |
try { |
7493 | 228 |
if (!dropInProcess && sm != null) { |
5192
506ebd065f86
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|
229 |
sm.checkSystemClipboardAccess(); |
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|
230 |
} |
506ebd065f86
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|
231 |
} catch (Exception e) { |
506ebd065f86
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|
232 |
Thread currentThread = Thread.currentThread(); |
506ebd065f86
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|
233 |
currentThread.getUncaughtExceptionHandler().uncaughtException(currentThread, e); |
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|
234 |
return null; |
506ebd065f86
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|
235 |
} |
506ebd065f86
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|
236 |
|
2 | 237 |
Long lFormat = null; |
238 |
Transferable localTransferable = local; |
|
239 |
||
240 |
if (localTransferable != null) { |
|
241 |
return localTransferable.getTransferData(df); |
|
242 |
} |
|
243 |
||
244 |
if (dropStatus != STATUS_ACCEPT || dropComplete) { |
|
245 |
throw new InvalidDnDOperationException("No drop current"); |
|
246 |
} |
|
247 |
||
248 |
Map flavorMap = DataTransferer.getInstance().getFlavorsForFormats |
|
249 |
(currentT, DataTransferer.adaptFlavorMap |
|
250 |
(currentDT.getFlavorMap())); |
|
251 |
||
252 |
lFormat = (Long)flavorMap.get(df); |
|
253 |
if (lFormat == null) { |
|
254 |
throw new UnsupportedFlavorException(df); |
|
255 |
} |
|
256 |
||
257 |
if (df.isRepresentationClassRemote() && |
|
258 |
currentDA != DnDConstants.ACTION_LINK) { |
|
259 |
throw new InvalidDnDOperationException("only ACTION_LINK is permissable for transfer of java.rmi.Remote objects"); |
|
260 |
} |
|
261 |
||
262 |
final long format = lFormat.longValue(); |
|
263 |
Object ret = getNativeData(format); |
|
264 |
||
265 |
if (ret instanceof byte[]) { |
|
266 |
try { |
|
267 |
return DataTransferer.getInstance(). |
|
268 |
translateBytes((byte[])ret, df, format, this); |
|
269 |
} catch (IOException e) { |
|
270 |
throw new InvalidDnDOperationException(e.getMessage()); |
|
271 |
} |
|
272 |
} else if (ret instanceof InputStream) { |
|
273 |
try { |
|
274 |
return DataTransferer.getInstance(). |
|
275 |
translateStream((InputStream)ret, df, format, this); |
|
276 |
} catch (IOException e) { |
|
277 |
throw new InvalidDnDOperationException(e.getMessage()); |
|
278 |
} |
|
279 |
} else { |
|
280 |
throw new IOException("no native data was transfered"); |
|
281 |
} |
|
282 |
} |
|
283 |
||
284 |
protected abstract Object getNativeData(long format) |
|
285 |
throws IOException; |
|
286 |
||
287 |
/** |
|
288 |
* @return if the transfer is a local one |
|
289 |
*/ |
|
290 |
public boolean isTransferableJVMLocal() { |
|
291 |
return local != null || getJVMLocalSourceTransferable() != null; |
|
292 |
} |
|
293 |
||
294 |
private int handleEnterMessage(final Component component, |
|
295 |
final int x, final int y, |
|
296 |
final int dropAction, |
|
297 |
final int actions, final long[] formats, |
|
298 |
final long nativeCtxt) { |
|
299 |
return postDropTargetEvent(component, x, y, dropAction, actions, |
|
300 |
formats, nativeCtxt, |
|
301 |
SunDropTargetEvent.MOUSE_ENTERED, |
|
302 |
SunDropTargetContextPeer.DISPATCH_SYNC); |
|
303 |
} |
|
304 |
||
305 |
/** |
|
306 |
* actual processing on EventQueue Thread |
|
307 |
*/ |
|
308 |
||
309 |
protected void processEnterMessage(SunDropTargetEvent event) { |
|
310 |
Component c = (Component)event.getSource(); |
|
311 |
DropTarget dt = c.getDropTarget(); |
|
312 |
Point hots = event.getPoint(); |
|
313 |
||
314 |
local = getJVMLocalSourceTransferable(); |
|
315 |
||
316 |
if (currentDTC != null) { // some wreckage from last time |
|
317 |
currentDTC.removeNotify(); |
|
318 |
currentDTC = null; |
|
319 |
} |
|
320 |
||
321 |
if (c.isShowing() && dt != null && dt.isActive()) { |
|
322 |
currentDT = dt; |
|
323 |
currentDTC = currentDT.getDropTargetContext(); |
|
324 |
||
325 |
currentDTC.addNotify(this); |
|
326 |
||
327 |
currentA = dt.getDefaultActions(); |
|
328 |
||
329 |
try { |
|
330 |
((DropTargetListener)dt).dragEnter(new DropTargetDragEvent(currentDTC, |
|
331 |
hots, |
|
332 |
currentDA, |
|
333 |
currentSA)); |
|
334 |
} catch (Exception e) { |
|
335 |
e.printStackTrace(); |
|
336 |
currentDA = DnDConstants.ACTION_NONE; |
|
337 |
} |
|
338 |
} else { |
|
339 |
currentDT = null; |
|
340 |
currentDTC = null; |
|
341 |
currentDA = DnDConstants.ACTION_NONE; |
|
342 |
currentSA = DnDConstants.ACTION_NONE; |
|
343 |
currentA = DnDConstants.ACTION_NONE; |
|
344 |
} |
|
345 |
||
346 |
} |
|
347 |
||
348 |
/** |
|
349 |
* upcall to handle exit messages |
|
350 |
*/ |
|
351 |
||
352 |
private void handleExitMessage(final Component component, |
|
353 |
final long nativeCtxt) { |
|
354 |
/* |
|
355 |
* Even though the return value is irrelevant for this event, it is |
|
356 |
* dispatched synchronously to fix 4393148 properly. |
|
357 |
*/ |
|
358 |
postDropTargetEvent(component, 0, 0, DnDConstants.ACTION_NONE, |
|
359 |
DnDConstants.ACTION_NONE, null, nativeCtxt, |
|
360 |
SunDropTargetEvent.MOUSE_EXITED, |
|
361 |
SunDropTargetContextPeer.DISPATCH_SYNC); |
|
362 |
} |
|
363 |
||
364 |
/** |
|
365 |
* |
|
366 |
*/ |
|
367 |
||
368 |
protected void processExitMessage(SunDropTargetEvent event) { |
|
369 |
Component c = (Component)event.getSource(); |
|
370 |
DropTarget dt = c.getDropTarget(); |
|
371 |
DropTargetContext dtc = null; |
|
372 |
||
373 |
if (dt == null) { |
|
374 |
currentDT = null; |
|
375 |
currentT = null; |
|
376 |
||
377 |
if (currentDTC != null) { |
|
378 |
currentDTC.removeNotify(); |
|
379 |
} |
|
380 |
||
381 |
currentDTC = null; |
|
382 |
||
383 |
return; |
|
384 |
} |
|
385 |
||
386 |
if (dt != currentDT) { |
|
387 |
||
388 |
if (currentDTC != null) { |
|
389 |
currentDTC.removeNotify(); |
|
390 |
} |
|
391 |
||
392 |
currentDT = dt; |
|
393 |
currentDTC = dt.getDropTargetContext(); |
|
394 |
||
395 |
currentDTC.addNotify(this); |
|
396 |
} |
|
397 |
||
398 |
dtc = currentDTC; |
|
399 |
||
400 |
if (dt.isActive()) try { |
|
401 |
((DropTargetListener)dt).dragExit(new DropTargetEvent(dtc)); |
|
402 |
} catch (Exception e) { |
|
403 |
e.printStackTrace(); |
|
404 |
} finally { |
|
405 |
currentA = DnDConstants.ACTION_NONE; |
|
406 |
currentSA = DnDConstants.ACTION_NONE; |
|
407 |
currentDA = DnDConstants.ACTION_NONE; |
|
408 |
currentDT = null; |
|
409 |
currentT = null; |
|
410 |
||
411 |
currentDTC.removeNotify(); |
|
412 |
currentDTC = null; |
|
413 |
||
414 |
local = null; |
|
415 |
||
416 |
dragRejected = false; |
|
417 |
} |
|
418 |
} |
|
419 |
||
420 |
private int handleMotionMessage(final Component component, |
|
421 |
final int x, final int y, |
|
422 |
final int dropAction, |
|
423 |
final int actions, final long[] formats, |
|
424 |
final long nativeCtxt) { |
|
425 |
return postDropTargetEvent(component, x, y, dropAction, actions, |
|
426 |
formats, nativeCtxt, |
|
427 |
SunDropTargetEvent.MOUSE_DRAGGED, |
|
428 |
SunDropTargetContextPeer.DISPATCH_SYNC); |
|
429 |
} |
|
430 |
||
431 |
/** |
|
432 |
* |
|
433 |
*/ |
|
434 |
||
435 |
protected void processMotionMessage(SunDropTargetEvent event, |
|
436 |
boolean operationChanged) { |
|
437 |
Component c = (Component)event.getSource(); |
|
438 |
Point hots = event.getPoint(); |
|
439 |
int id = event.getID(); |
|
440 |
DropTarget dt = c.getDropTarget(); |
|
441 |
DropTargetContext dtc = null; |
|
442 |
||
443 |
if (c.isShowing() && (dt != null) && dt.isActive()) { |
|
444 |
if (currentDT != dt) { |
|
445 |
if (currentDTC != null) { |
|
446 |
currentDTC.removeNotify(); |
|
447 |
} |
|
448 |
||
449 |
currentDT = dt; |
|
450 |
currentDTC = null; |
|
451 |
} |
|
452 |
||
453 |
dtc = currentDT.getDropTargetContext(); |
|
454 |
if (dtc != currentDTC) { |
|
455 |
if (currentDTC != null) { |
|
456 |
currentDTC.removeNotify(); |
|
457 |
} |
|
458 |
||
459 |
currentDTC = dtc; |
|
460 |
currentDTC.addNotify(this); |
|
461 |
} |
|
462 |
||
463 |
currentA = currentDT.getDefaultActions(); |
|
464 |
||
465 |
try { |
|
466 |
DropTargetDragEvent dtde = new DropTargetDragEvent(dtc, |
|
467 |
hots, |
|
468 |
currentDA, |
|
469 |
currentSA); |
|
470 |
DropTargetListener dtl = (DropTargetListener)dt; |
|
471 |
if (operationChanged) { |
|
472 |
dtl.dropActionChanged(dtde); |
|
473 |
} else { |
|
474 |
dtl.dragOver(dtde); |
|
475 |
} |
|
476 |
||
477 |
if (dragRejected) { |
|
478 |
currentDA = DnDConstants.ACTION_NONE; |
|
479 |
} |
|
480 |
} catch (Exception e) { |
|
481 |
e.printStackTrace(); |
|
482 |
currentDA = DnDConstants.ACTION_NONE; |
|
483 |
} |
|
484 |
} else { |
|
485 |
currentDA = DnDConstants.ACTION_NONE; |
|
486 |
} |
|
487 |
} |
|
488 |
||
489 |
/** |
|
490 |
* upcall to handle the Drop message |
|
491 |
*/ |
|
492 |
||
493 |
private void handleDropMessage(final Component component, |
|
494 |
final int x, final int y, |
|
495 |
final int dropAction, final int actions, |
|
496 |
final long[] formats, |
|
497 |
final long nativeCtxt) { |
|
498 |
postDropTargetEvent(component, x, y, dropAction, actions, |
|
499 |
formats, nativeCtxt, |
|
500 |
SunDropTargetEvent.MOUSE_DROPPED, |
|
501 |
!SunDropTargetContextPeer.DISPATCH_SYNC); |
|
502 |
} |
|
503 |
||
504 |
/** |
|
505 |
* |
|
506 |
*/ |
|
507 |
||
508 |
protected void processDropMessage(SunDropTargetEvent event) { |
|
509 |
Component c = (Component)event.getSource(); |
|
510 |
Point hots = event.getPoint(); |
|
511 |
DropTarget dt = c.getDropTarget(); |
|
512 |
||
513 |
dropStatus = STATUS_WAIT; // drop pending ACK |
|
514 |
dropComplete = false; |
|
515 |
||
516 |
if (c.isShowing() && dt != null && dt.isActive()) { |
|
517 |
DropTargetContext dtc = dt.getDropTargetContext(); |
|
518 |
||
519 |
currentDT = dt; |
|
520 |
||
521 |
if (currentDTC != null) { |
|
522 |
currentDTC.removeNotify(); |
|
523 |
} |
|
524 |
||
525 |
currentDTC = dtc; |
|
526 |
currentDTC.addNotify(this); |
|
527 |
currentA = dt.getDefaultActions(); |
|
528 |
||
529 |
synchronized(_globalLock) { |
|
530 |
if ((local = getJVMLocalSourceTransferable()) != null) |
|
531 |
setCurrentJVMLocalSourceTransferable(null); |
|
532 |
} |
|
533 |
||
7493 | 534 |
dropInProcess = true; |
535 |
||
2 | 536 |
try { |
537 |
((DropTargetListener)dt).drop(new DropTargetDropEvent(dtc, |
|
538 |
hots, |
|
539 |
currentDA, |
|
540 |
currentSA, |
|
541 |
local != null)); |
|
542 |
} finally { |
|
543 |
if (dropStatus == STATUS_WAIT) { |
|
544 |
rejectDrop(); |
|
545 |
} else if (dropComplete == false) { |
|
546 |
dropComplete(false); |
|
547 |
} |
|
7493 | 548 |
dropInProcess = false; |
2 | 549 |
} |
550 |
} else { |
|
551 |
rejectDrop(); |
|
552 |
} |
|
553 |
} |
|
554 |
||
555 |
protected int postDropTargetEvent(final Component component, |
|
556 |
final int x, final int y, |
|
557 |
final int dropAction, |
|
558 |
final int actions, |
|
559 |
final long[] formats, |
|
560 |
final long nativeCtxt, |
|
561 |
final int eventID, |
|
562 |
final boolean dispatchType) { |
|
563 |
AppContext appContext = SunToolkit.targetToAppContext(component); |
|
564 |
||
565 |
EventDispatcher dispatcher = |
|
566 |
new EventDispatcher(this, dropAction, actions, formats, nativeCtxt, |
|
567 |
dispatchType); |
|
568 |
||
569 |
SunDropTargetEvent event = |
|
570 |
new SunDropTargetEvent(component, eventID, x, y, dispatcher); |
|
571 |
||
572 |
if (dispatchType == SunDropTargetContextPeer.DISPATCH_SYNC) { |
|
573 |
DataTransferer.getInstance().getToolkitThreadBlockedHandler().lock(); |
|
574 |
} |
|
575 |
||
576 |
// schedule callback |
|
577 |
SunToolkit.postEvent(appContext, event); |
|
578 |
||
579 |
eventPosted(event); |
|
580 |
||
581 |
if (dispatchType == SunDropTargetContextPeer.DISPATCH_SYNC) { |
|
582 |
while (!dispatcher.isDone()) { |
|
583 |
DataTransferer.getInstance().getToolkitThreadBlockedHandler().enter(); |
|
584 |
} |
|
585 |
||
586 |
DataTransferer.getInstance().getToolkitThreadBlockedHandler().unlock(); |
|
587 |
||
588 |
// return target's response |
|
589 |
return dispatcher.getReturnValue(); |
|
590 |
} else { |
|
591 |
return 0; |
|
592 |
} |
|
593 |
} |
|
594 |
||
595 |
/** |
|
596 |
* acceptDrag |
|
597 |
*/ |
|
598 |
||
599 |
public synchronized void acceptDrag(int dragOperation) { |
|
600 |
if (currentDT == null) { |
|
601 |
throw new InvalidDnDOperationException("No Drag pending"); |
|
602 |
} |
|
603 |
currentDA = mapOperation(dragOperation); |
|
604 |
if (currentDA != DnDConstants.ACTION_NONE) { |
|
605 |
dragRejected = false; |
|
606 |
} |
|
607 |
} |
|
608 |
||
609 |
/** |
|
610 |
* rejectDrag |
|
611 |
*/ |
|
612 |
||
613 |
public synchronized void rejectDrag() { |
|
614 |
if (currentDT == null) { |
|
615 |
throw new InvalidDnDOperationException("No Drag pending"); |
|
616 |
} |
|
617 |
currentDA = DnDConstants.ACTION_NONE; |
|
618 |
dragRejected = true; |
|
619 |
} |
|
620 |
||
621 |
/** |
|
622 |
* acceptDrop |
|
623 |
*/ |
|
624 |
||
625 |
public synchronized void acceptDrop(int dropOperation) { |
|
626 |
if (dropOperation == DnDConstants.ACTION_NONE) |
|
627 |
throw new IllegalArgumentException("invalid acceptDrop() action"); |
|
628 |
||
629 |
if (dropStatus != STATUS_WAIT) { |
|
630 |
throw new InvalidDnDOperationException("invalid acceptDrop()"); |
|
631 |
} |
|
632 |
||
633 |
currentDA = currentA = mapOperation(dropOperation & currentSA); |
|
634 |
||
635 |
dropStatus = STATUS_ACCEPT; |
|
636 |
dropComplete = false; |
|
637 |
} |
|
638 |
||
639 |
/** |
|
640 |
* reject Drop |
|
641 |
*/ |
|
642 |
||
643 |
public synchronized void rejectDrop() { |
|
644 |
if (dropStatus != STATUS_WAIT) { |
|
645 |
throw new InvalidDnDOperationException("invalid rejectDrop()"); |
|
646 |
} |
|
647 |
dropStatus = STATUS_REJECT; |
|
648 |
/* |
|
649 |
* Fix for 4285634. |
|
650 |
* The target rejected the drop means that it doesn't perform any |
|
651 |
* drop action. This change is to make Solaris behavior consistent |
|
652 |
* with Win32. |
|
653 |
*/ |
|
654 |
currentDA = DnDConstants.ACTION_NONE; |
|
655 |
dropComplete(false); |
|
656 |
} |
|
657 |
||
658 |
/** |
|
659 |
* mapOperation |
|
660 |
*/ |
|
661 |
||
662 |
private int mapOperation(int operation) { |
|
663 |
int[] operations = { |
|
664 |
DnDConstants.ACTION_MOVE, |
|
665 |
DnDConstants.ACTION_COPY, |
|
666 |
DnDConstants.ACTION_LINK, |
|
667 |
}; |
|
668 |
int ret = DnDConstants.ACTION_NONE; |
|
669 |
||
670 |
for (int i = 0; i < operations.length; i++) { |
|
671 |
if ((operation & operations[i]) == operations[i]) { |
|
672 |
ret = operations[i]; |
|
673 |
break; |
|
674 |
} |
|
675 |
} |
|
676 |
||
677 |
return ret; |
|
678 |
} |
|
679 |
||
680 |
/** |
|
681 |
* signal drop complete |
|
682 |
*/ |
|
683 |
||
684 |
public synchronized void dropComplete(boolean success) { |
|
685 |
if (dropStatus == STATUS_NONE) { |
|
686 |
throw new InvalidDnDOperationException("No Drop pending"); |
|
687 |
} |
|
688 |
||
689 |
if (currentDTC != null) currentDTC.removeNotify(); |
|
690 |
||
691 |
currentDT = null; |
|
692 |
currentDTC = null; |
|
693 |
currentT = null; |
|
694 |
currentA = DnDConstants.ACTION_NONE; |
|
695 |
||
696 |
synchronized(_globalLock) { |
|
697 |
currentJVMLocalSourceTransferable = null; |
|
698 |
} |
|
699 |
||
700 |
dropStatus = STATUS_NONE; |
|
701 |
dropComplete = true; |
|
702 |
||
703 |
try { |
|
704 |
doDropDone(success, currentDA, local != null); |
|
705 |
} finally { |
|
706 |
currentDA = DnDConstants.ACTION_NONE; |
|
707 |
// The native context is invalid after the drop is done. |
|
708 |
// Clear the reference to prohibit access. |
|
709 |
nativeDragContext = 0; |
|
710 |
} |
|
711 |
} |
|
712 |
||
713 |
protected abstract void doDropDone(boolean success, |
|
714 |
int dropAction, boolean isLocal); |
|
715 |
||
716 |
protected synchronized long getNativeDragContext() { |
|
717 |
return nativeDragContext; |
|
718 |
} |
|
719 |
||
720 |
protected void eventPosted(SunDropTargetEvent e) {} |
|
721 |
||
722 |
protected void eventProcessed(SunDropTargetEvent e, int returnValue, |
|
723 |
boolean dispatcherDone) {} |
|
724 |
||
725 |
protected static class EventDispatcher { |
|
726 |
||
727 |
private final SunDropTargetContextPeer peer; |
|
728 |
||
729 |
// context fields |
|
730 |
private final int dropAction; |
|
731 |
private final int actions; |
|
732 |
private final long[] formats; |
|
733 |
private long nativeCtxt; |
|
734 |
private final boolean dispatchType; |
|
735 |
private boolean dispatcherDone = false; |
|
736 |
||
737 |
// dispatcher state fields |
|
738 |
private int returnValue = 0; |
|
739 |
// set of events to be dispatched by this dispatcher |
|
740 |
private final HashSet eventSet = new HashSet(3); |
|
741 |
||
742 |
static final ToolkitThreadBlockedHandler handler = |
|
743 |
DataTransferer.getInstance().getToolkitThreadBlockedHandler(); |
|
744 |
||
745 |
EventDispatcher(SunDropTargetContextPeer peer, |
|
746 |
int dropAction, |
|
747 |
int actions, |
|
748 |
long[] formats, |
|
749 |
long nativeCtxt, |
|
750 |
boolean dispatchType) { |
|
751 |
||
752 |
this.peer = peer; |
|
753 |
this.nativeCtxt = nativeCtxt; |
|
754 |
this.dropAction = dropAction; |
|
755 |
this.actions = actions; |
|
756 |
this.formats = |
|
757 |
(null == formats) ? null : Arrays.copyOf(formats, formats.length); |
|
758 |
this.dispatchType = dispatchType; |
|
759 |
} |
|
760 |
||
761 |
void dispatchEvent(SunDropTargetEvent e) { |
|
762 |
int id = e.getID(); |
|
763 |
||
764 |
switch (id) { |
|
765 |
case SunDropTargetEvent.MOUSE_ENTERED: |
|
766 |
dispatchEnterEvent(e); |
|
767 |
break; |
|
768 |
case SunDropTargetEvent.MOUSE_DRAGGED: |
|
769 |
dispatchMotionEvent(e); |
|
770 |
break; |
|
771 |
case SunDropTargetEvent.MOUSE_EXITED: |
|
772 |
dispatchExitEvent(e); |
|
773 |
break; |
|
774 |
case SunDropTargetEvent.MOUSE_DROPPED: |
|
775 |
dispatchDropEvent(e); |
|
776 |
break; |
|
777 |
default: |
|
778 |
throw new InvalidDnDOperationException(); |
|
779 |
} |
|
780 |
} |
|
781 |
||
782 |
private void dispatchEnterEvent(SunDropTargetEvent e) { |
|
783 |
synchronized (peer) { |
|
784 |
||
785 |
// store the drop action here to track operation changes |
|
786 |
peer.previousDA = dropAction; |
|
787 |
||
788 |
// setup peer context |
|
789 |
peer.nativeDragContext = nativeCtxt; |
|
790 |
peer.currentT = formats; |
|
791 |
peer.currentSA = actions; |
|
792 |
peer.currentDA = dropAction; |
|
793 |
// To allow data retrieval. |
|
794 |
peer.dropStatus = STATUS_ACCEPT; |
|
795 |
peer.dropComplete = false; |
|
796 |
||
797 |
try { |
|
798 |
peer.processEnterMessage(e); |
|
799 |
} finally { |
|
800 |
peer.dropStatus = STATUS_NONE; |
|
801 |
} |
|
802 |
||
803 |
setReturnValue(peer.currentDA); |
|
804 |
} |
|
805 |
} |
|
806 |
||
807 |
private void dispatchMotionEvent(SunDropTargetEvent e) { |
|
808 |
synchronized (peer) { |
|
809 |
||
810 |
boolean operationChanged = peer.previousDA != dropAction; |
|
811 |
peer.previousDA = dropAction; |
|
812 |
||
813 |
// setup peer context |
|
814 |
peer.nativeDragContext = nativeCtxt; |
|
815 |
peer.currentT = formats; |
|
816 |
peer.currentSA = actions; |
|
817 |
peer.currentDA = dropAction; |
|
818 |
// To allow data retrieval. |
|
819 |
peer.dropStatus = STATUS_ACCEPT; |
|
820 |
peer.dropComplete = false; |
|
821 |
||
822 |
try { |
|
823 |
peer.processMotionMessage(e, operationChanged); |
|
824 |
} finally { |
|
825 |
peer.dropStatus = STATUS_NONE; |
|
826 |
} |
|
827 |
||
828 |
setReturnValue(peer.currentDA); |
|
829 |
} |
|
830 |
} |
|
831 |
||
832 |
private void dispatchExitEvent(SunDropTargetEvent e) { |
|
833 |
synchronized (peer) { |
|
834 |
||
835 |
// setup peer context |
|
836 |
peer.nativeDragContext = nativeCtxt; |
|
837 |
||
838 |
peer.processExitMessage(e); |
|
839 |
} |
|
840 |
} |
|
841 |
||
842 |
private void dispatchDropEvent(SunDropTargetEvent e) { |
|
843 |
synchronized (peer) { |
|
844 |
||
845 |
// setup peer context |
|
846 |
peer.nativeDragContext = nativeCtxt; |
|
847 |
peer.currentT = formats; |
|
848 |
peer.currentSA = actions; |
|
849 |
peer.currentDA = dropAction; |
|
850 |
||
851 |
peer.processDropMessage(e); |
|
852 |
} |
|
853 |
} |
|
854 |
||
855 |
void setReturnValue(int ret) { |
|
856 |
returnValue = ret; |
|
857 |
} |
|
858 |
||
859 |
int getReturnValue() { |
|
860 |
return returnValue; |
|
861 |
} |
|
862 |
||
863 |
boolean isDone() { |
|
864 |
return eventSet.isEmpty(); |
|
865 |
} |
|
866 |
||
867 |
void registerEvent(SunDropTargetEvent e) { |
|
868 |
handler.lock(); |
|
3938
ef327bd847c0
6879044: Eliminate the dependency on logging from the AWT/2D/Swing classes
mchung
parents:
2
diff
changeset
|
869 |
if (!eventSet.add(e) && dndLog.isLoggable(PlatformLogger.FINE)) { |
ef327bd847c0
6879044: Eliminate the dependency on logging from the AWT/2D/Swing classes
mchung
parents:
2
diff
changeset
|
870 |
dndLog.fine("Event is already registered: " + e); |
2 | 871 |
} |
872 |
handler.unlock(); |
|
873 |
} |
|
874 |
||
875 |
void unregisterEvent(SunDropTargetEvent e) { |
|
876 |
handler.lock(); |
|
877 |
try { |
|
878 |
if (!eventSet.remove(e)) { |
|
879 |
// This event has already been unregistered. |
|
880 |
return; |
|
881 |
} |
|
882 |
if (eventSet.isEmpty()) { |
|
883 |
if (!dispatcherDone && dispatchType == DISPATCH_SYNC) { |
|
884 |
handler.exit(); |
|
885 |
} |
|
886 |
dispatcherDone = true; |
|
887 |
} |
|
888 |
} finally { |
|
889 |
handler.unlock(); |
|
890 |
} |
|
891 |
||
892 |
try { |
|
893 |
peer.eventProcessed(e, returnValue, dispatcherDone); |
|
894 |
} finally { |
|
895 |
/* |
|
896 |
* Clear the reference to the native context if all copies of |
|
897 |
* the original event are processed. |
|
898 |
*/ |
|
899 |
if (dispatcherDone) { |
|
900 |
nativeCtxt = 0; |
|
901 |
// Fix for 6342381 |
|
902 |
peer.nativeDragContext = 0; |
|
903 |
||
904 |
} |
|
905 |
} |
|
906 |
} |
|
907 |
||
908 |
public void unregisterAllEvents() { |
|
909 |
Object[] events = null; |
|
910 |
handler.lock(); |
|
911 |
try { |
|
912 |
events = eventSet.toArray(); |
|
913 |
} finally { |
|
914 |
handler.unlock(); |
|
915 |
} |
|
916 |
||
917 |
if (events != null) { |
|
918 |
for (int i = 0; i < events.length; i++) { |
|
919 |
unregisterEvent((SunDropTargetEvent)events[i]); |
|
920 |
} |
|
921 |
} |
|
922 |
} |
|
923 |
} |
|
924 |
} |