J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003-2005 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 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 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package sun.awt.X11; |
| 27 | |
| 28 | import java.awt.Point; |
| 29 | |
| 30 | import java.awt.dnd.DnDConstants; |
| 31 | |
| 32 | import java.awt.event.MouseEvent; |
| 33 | |
| 34 | import java.io.IOException; |
| 35 | |
| 36 | import java.util.logging.*; |
| 37 | |
| 38 | import sun.misc.Unsafe; |
| 39 | |
| 40 | /** |
| 41 | * XDropTargetProtocol implementation for XDnD protocol. |
| 42 | * |
| 43 | * @since 1.5 |
| 44 | */ |
| 45 | class XDnDDropTargetProtocol extends XDropTargetProtocol { |
| 46 | private static final Logger logger = |
| 47 | Logger.getLogger("sun.awt.X11.xembed.xdnd.XDnDDropTargetProtocol"); |
| 48 | |
| 49 | private static final Unsafe unsafe = XlibWrapper.unsafe; |
| 50 | |
| 51 | private long sourceWindow = 0; |
| 52 | private long sourceWindowMask = 0; |
| 53 | private int sourceProtocolVersion = 0; |
| 54 | private int sourceActions = DnDConstants.ACTION_NONE; |
| 55 | private long[] sourceFormats = null; |
| 56 | private boolean trackSourceActions = false; |
| 57 | private int userAction = DnDConstants.ACTION_NONE; |
| 58 | private int sourceX = 0; |
| 59 | private int sourceY = 0; |
| 60 | private XWindow targetXWindow = null; |
| 61 | |
| 62 | // XEmbed stuff. |
| 63 | private long prevCtxt = 0; |
| 64 | private boolean overXEmbedClient = false; |
| 65 | |
| 66 | protected XDnDDropTargetProtocol(XDropTargetProtocolListener listener) { |
| 67 | super(listener); |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Creates an instance associated with the specified listener. |
| 72 | * |
| 73 | * @throws NullPointerException if listener is <code>null</code>. |
| 74 | */ |
| 75 | static XDropTargetProtocol createInstance(XDropTargetProtocolListener listener) { |
| 76 | return new XDnDDropTargetProtocol(listener); |
| 77 | } |
| 78 | |
| 79 | public String getProtocolName() { |
| 80 | return XDragAndDropProtocols.XDnD; |
| 81 | } |
| 82 | |
| 83 | public void registerDropTarget(long window) { |
| 84 | assert XToolkit.isAWTLockHeldByCurrentThread(); |
| 85 | |
| 86 | long data = Native.allocateLongArray(1); |
| 87 | |
| 88 | try { |
| 89 | Native.putLong(data, 0, XDnDConstants.XDND_PROTOCOL_VERSION); |
| 90 | |
| 91 | XToolkit.WITH_XERROR_HANDLER(XWM.VerifyChangePropertyHandler); |
| 92 | XDnDConstants.XA_XdndAware.setAtomData(window, XAtom.XA_ATOM, data, 1); |
| 93 | XToolkit.RESTORE_XERROR_HANDLER(); |
| 94 | |
| 95 | if (XToolkit.saved_error != null && |
| 96 | XToolkit.saved_error.get_error_code() != XlibWrapper.Success) { |
| 97 | throw new XException("Cannot write XdndAware property"); |
| 98 | } |
| 99 | } finally { |
| 100 | unsafe.freeMemory(data); |
| 101 | data = 0; |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | public void unregisterDropTarget(long window) { |
| 106 | assert XToolkit.isAWTLockHeldByCurrentThread(); |
| 107 | |
| 108 | XDnDConstants.XA_XdndAware.DeleteProperty(window); |
| 109 | } |
| 110 | |
| 111 | public void registerEmbedderDropSite(long embedder) { |
| 112 | assert XToolkit.isAWTLockHeldByCurrentThread(); |
| 113 | |
| 114 | boolean overriden = false; |
| 115 | int version = 0; |
| 116 | long proxy = 0; |
| 117 | long newProxy = XDropTargetRegistry.getDnDProxyWindow(); |
| 118 | int status = 0; |
| 119 | |
| 120 | WindowPropertyGetter wpg1 = |
| 121 | new WindowPropertyGetter(embedder, XDnDConstants.XA_XdndAware, 0, 1, |
| 122 | false, XlibWrapper.AnyPropertyType); |
| 123 | |
| 124 | try { |
| 125 | status = wpg1.execute(XToolkit.IgnoreBadWindowHandler); |
| 126 | |
| 127 | if (status == XlibWrapper.Success && |
| 128 | wpg1.getData() != 0 && wpg1.getActualType() == XAtom.XA_ATOM) { |
| 129 | |
| 130 | overriden = true; |
| 131 | version = (int)Native.getLong(wpg1.getData()); |
| 132 | } |
| 133 | } finally { |
| 134 | wpg1.dispose(); |
| 135 | } |
| 136 | |
| 137 | /* XdndProxy is not supported for prior to XDnD version 4 */ |
| 138 | if (overriden && version >= 4) { |
| 139 | WindowPropertyGetter wpg2 = |
| 140 | new WindowPropertyGetter(embedder, XDnDConstants.XA_XdndProxy, |
| 141 | 0, 1, false, XAtom.XA_WINDOW); |
| 142 | |
| 143 | try { |
| 144 | status = wpg2.execute(XToolkit.IgnoreBadWindowHandler); |
| 145 | |
| 146 | if (status == XlibWrapper.Success && |
| 147 | wpg2.getData() != 0 && |
| 148 | wpg2.getActualType() == XAtom.XA_WINDOW) { |
| 149 | |
| 150 | proxy = Native.getLong(wpg2.getData()); |
| 151 | } |
| 152 | } finally { |
| 153 | wpg2.dispose(); |
| 154 | } |
| 155 | |
| 156 | if (proxy != 0) { |
| 157 | WindowPropertyGetter wpg3 = |
| 158 | new WindowPropertyGetter(proxy, XDnDConstants.XA_XdndProxy, |
| 159 | 0, 1, false, XAtom.XA_WINDOW); |
| 160 | |
| 161 | try { |
| 162 | status = wpg3.execute(XToolkit.IgnoreBadWindowHandler); |
| 163 | |
| 164 | if (status != XlibWrapper.Success || |
| 165 | wpg3.getData() == 0 || |
| 166 | wpg3.getActualType() != XAtom.XA_WINDOW || |
| 167 | Native.getLong(wpg3.getData()) != proxy) { |
| 168 | |
| 169 | proxy = 0; |
| 170 | } else { |
| 171 | WindowPropertyGetter wpg4 = |
| 172 | new WindowPropertyGetter(proxy, |
| 173 | XDnDConstants.XA_XdndAware, |
| 174 | 0, 1, false, |
| 175 | XlibWrapper.AnyPropertyType); |
| 176 | |
| 177 | try { |
| 178 | status = wpg4.execute(XToolkit.IgnoreBadWindowHandler); |
| 179 | |
| 180 | if (status != XlibWrapper.Success || |
| 181 | wpg4.getData() == 0 || |
| 182 | wpg4.getActualType() != XAtom.XA_ATOM) { |
| 183 | |
| 184 | proxy = 0; |
| 185 | } |
| 186 | } finally { |
| 187 | wpg4.dispose(); |
| 188 | } |
| 189 | } |
| 190 | } finally { |
| 191 | wpg3.dispose(); |
| 192 | } |
| 193 | } |
| 194 | } |
| 195 | |
| 196 | if (proxy == newProxy) { |
| 197 | // Embedder already registered. |
| 198 | return; |
| 199 | } |
| 200 | |
| 201 | long data = Native.allocateLongArray(1); |
| 202 | |
| 203 | try { |
| 204 | Native.putLong(data, 0, XDnDConstants.XDND_PROTOCOL_VERSION); |
| 205 | |
| 206 | /* The proxy window must have the XdndAware set, as XDnD protocol |
| 207 | prescribes to check the proxy window for XdndAware. */ |
| 208 | XToolkit.WITH_XERROR_HANDLER(XWM.VerifyChangePropertyHandler); |
| 209 | XDnDConstants.XA_XdndAware.setAtomData(newProxy, XAtom.XA_ATOM, |
| 210 | data, 1); |
| 211 | XToolkit.RESTORE_XERROR_HANDLER(); |
| 212 | |
| 213 | if (XToolkit.saved_error != null && |
| 214 | XToolkit.saved_error.get_error_code() != |
| 215 | XlibWrapper.Success) { |
| 216 | throw new XException("Cannot write XdndAware property"); |
| 217 | } |
| 218 | |
| 219 | Native.putLong(data, 0, newProxy); |
| 220 | |
| 221 | /* The proxy window must have the XdndProxy set to point to itself.*/ |
| 222 | XToolkit.WITH_XERROR_HANDLER(XWM.VerifyChangePropertyHandler); |
| 223 | XDnDConstants.XA_XdndProxy.setAtomData(newProxy, XAtom.XA_WINDOW, |
| 224 | data, 1); |
| 225 | XToolkit.RESTORE_XERROR_HANDLER(); |
| 226 | |
| 227 | if (XToolkit.saved_error != null && |
| 228 | XToolkit.saved_error.get_error_code() != |
| 229 | XlibWrapper.Success) { |
| 230 | throw new XException("Cannot write XdndProxy property"); |
| 231 | } |
| 232 | |
| 233 | Native.putLong(data, 0, XDnDConstants.XDND_PROTOCOL_VERSION); |
| 234 | |
| 235 | XToolkit.WITH_XERROR_HANDLER(XWM.VerifyChangePropertyHandler); |
| 236 | XDnDConstants.XA_XdndAware.setAtomData(embedder, XAtom.XA_ATOM, |
| 237 | data, 1); |
| 238 | XToolkit.RESTORE_XERROR_HANDLER(); |
| 239 | |
| 240 | if (XToolkit.saved_error != null && |
| 241 | XToolkit.saved_error.get_error_code() != |
| 242 | XlibWrapper.Success) { |
| 243 | throw new XException("Cannot write XdndAware property"); |
| 244 | } |
| 245 | |
| 246 | Native.putLong(data, 0, newProxy); |
| 247 | |
| 248 | XToolkit.WITH_XERROR_HANDLER(XWM.VerifyChangePropertyHandler); |
| 249 | XDnDConstants.XA_XdndProxy.setAtomData(embedder, XAtom.XA_WINDOW, |
| 250 | data, 1); |
| 251 | XToolkit.RESTORE_XERROR_HANDLER(); |
| 252 | |
| 253 | if (XToolkit.saved_error != null && |
| 254 | XToolkit.saved_error.get_error_code() != |
| 255 | XlibWrapper.Success) { |
| 256 | throw new XException("Cannot write XdndProxy property"); |
| 257 | } |
| 258 | } finally { |
| 259 | unsafe.freeMemory(data); |
| 260 | data = 0; |
| 261 | } |
| 262 | |
| 263 | putEmbedderRegistryEntry(embedder, overriden, version, proxy); |
| 264 | } |
| 265 | |
| 266 | public void unregisterEmbedderDropSite(long embedder) { |
| 267 | assert XToolkit.isAWTLockHeldByCurrentThread(); |
| 268 | |
| 269 | EmbedderRegistryEntry entry = getEmbedderRegistryEntry(embedder); |
| 270 | |
| 271 | if (entry == null) { |
| 272 | return; |
| 273 | } |
| 274 | |
| 275 | if (entry.isOverriden()) { |
| 276 | long data = Native.allocateLongArray(1); |
| 277 | |
| 278 | try { |
| 279 | Native.putLong(data, 0, entry.getVersion()); |
| 280 | |
| 281 | XToolkit.WITH_XERROR_HANDLER(XWM.VerifyChangePropertyHandler); |
| 282 | XDnDConstants.XA_XdndAware.setAtomData(embedder, XAtom.XA_ATOM, |
| 283 | data, 1); |
| 284 | XToolkit.RESTORE_XERROR_HANDLER(); |
| 285 | |
| 286 | if (XToolkit.saved_error != null && |
| 287 | XToolkit.saved_error.get_error_code() != |
| 288 | XlibWrapper.Success) { |
| 289 | throw new XException("Cannot write XdndAware property"); |
| 290 | } |
| 291 | |
| 292 | Native.putLong(data, 0, (int)entry.getProxy()); |
| 293 | |
| 294 | XToolkit.WITH_XERROR_HANDLER(XWM.VerifyChangePropertyHandler); |
| 295 | XDnDConstants.XA_XdndProxy.setAtomData(embedder, XAtom.XA_WINDOW, |
| 296 | data, 1); |
| 297 | XToolkit.RESTORE_XERROR_HANDLER(); |
| 298 | |
| 299 | if (XToolkit.saved_error != null && |
| 300 | XToolkit.saved_error.get_error_code() != |
| 301 | XlibWrapper.Success) { |
| 302 | throw new XException("Cannot write XdndProxy property"); |
| 303 | } |
| 304 | } finally { |
| 305 | unsafe.freeMemory(data); |
| 306 | data = 0; |
| 307 | } |
| 308 | } else { |
| 309 | XDnDConstants.XA_XdndAware.DeleteProperty(embedder); |
| 310 | XDnDConstants.XA_XdndProxy.DeleteProperty(embedder); |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | /* |
| 315 | * Gets and stores in the registry the embedder's XDnD drop site info |
| 316 | * from the embedded. |
| 317 | */ |
| 318 | public void registerEmbeddedDropSite(long embedded) { |
| 319 | assert XToolkit.isAWTLockHeldByCurrentThread(); |
| 320 | |
| 321 | boolean overriden = false; |
| 322 | int version = 0; |
| 323 | long proxy = 0; |
| 324 | long newProxy = XDropTargetRegistry.getDnDProxyWindow(); |
| 325 | int status = 0; |
| 326 | |
| 327 | WindowPropertyGetter wpg1 = |
| 328 | new WindowPropertyGetter(embedded, XDnDConstants.XA_XdndAware, 0, 1, |
| 329 | false, XlibWrapper.AnyPropertyType); |
| 330 | |
| 331 | try { |
| 332 | status = wpg1.execute(XToolkit.IgnoreBadWindowHandler); |
| 333 | |
| 334 | if (status == XlibWrapper.Success && |
| 335 | wpg1.getData() != 0 && wpg1.getActualType() == XAtom.XA_ATOM) { |
| 336 | |
| 337 | overriden = true; |
| 338 | version = (int)Native.getLong(wpg1.getData()); |
| 339 | } |
| 340 | } finally { |
| 341 | wpg1.dispose(); |
| 342 | } |
| 343 | |
| 344 | /* XdndProxy is not supported for prior to XDnD version 4 */ |
| 345 | if (overriden && version >= 4) { |
| 346 | WindowPropertyGetter wpg2 = |
| 347 | new WindowPropertyGetter(embedded, XDnDConstants.XA_XdndProxy, |
| 348 | 0, 1, false, XAtom.XA_WINDOW); |
| 349 | |
| 350 | try { |
| 351 | status = wpg2.execute(XToolkit.IgnoreBadWindowHandler); |
| 352 | |
| 353 | if (status == XlibWrapper.Success && |
| 354 | wpg2.getData() != 0 && |
| 355 | wpg2.getActualType() == XAtom.XA_WINDOW) { |
| 356 | |
| 357 | proxy = Native.getLong(wpg2.getData()); |
| 358 | } |
| 359 | } finally { |
| 360 | wpg2.dispose(); |
| 361 | } |
| 362 | |
| 363 | if (proxy != 0) { |
| 364 | WindowPropertyGetter wpg3 = |
| 365 | new WindowPropertyGetter(proxy, XDnDConstants.XA_XdndProxy, |
| 366 | 0, 1, false, XAtom.XA_WINDOW); |
| 367 | |
| 368 | try { |
| 369 | status = wpg3.execute(XToolkit.IgnoreBadWindowHandler); |
| 370 | |
| 371 | if (status != XlibWrapper.Success || |
| 372 | wpg3.getData() == 0 || |
| 373 | wpg3.getActualType() != XAtom.XA_WINDOW || |
| 374 | Native.getLong(wpg3.getData()) != proxy) { |
| 375 | |
| 376 | proxy = 0; |
| 377 | } else { |
| 378 | WindowPropertyGetter wpg4 = |
| 379 | new WindowPropertyGetter(proxy, |
| 380 | XDnDConstants.XA_XdndAware, |
| 381 | 0, 1, false, |
| 382 | XlibWrapper.AnyPropertyType); |
| 383 | |
| 384 | try { |
| 385 | status = wpg4.execute(XToolkit.IgnoreBadWindowHandler); |
| 386 | |
| 387 | if (status != XlibWrapper.Success || |
| 388 | wpg4.getData() == 0 || |
| 389 | wpg4.getActualType() != XAtom.XA_ATOM) { |
| 390 | |
| 391 | proxy = 0; |
| 392 | } |
| 393 | } finally { |
| 394 | wpg4.dispose(); |
| 395 | } |
| 396 | } |
| 397 | } finally { |
| 398 | wpg3.dispose(); |
| 399 | } |
| 400 | } |
| 401 | } |
| 402 | |
| 403 | putEmbedderRegistryEntry(embedded, overriden, version, proxy); |
| 404 | } |
| 405 | |
| 406 | public boolean isProtocolSupported(long window) { |
| 407 | assert XToolkit.isAWTLockHeldByCurrentThread(); |
| 408 | |
| 409 | WindowPropertyGetter wpg1 = |
| 410 | new WindowPropertyGetter(window, XDnDConstants.XA_XdndAware, 0, 1, |
| 411 | false, XlibWrapper.AnyPropertyType); |
| 412 | |
| 413 | try { |
| 414 | int status = wpg1.execute(XToolkit.IgnoreBadWindowHandler); |
| 415 | |
| 416 | if (status == XlibWrapper.Success && |
| 417 | wpg1.getData() != 0 && wpg1.getActualType() == XAtom.XA_ATOM) { |
| 418 | |
| 419 | return true; |
| 420 | } else { |
| 421 | return false; |
| 422 | } |
| 423 | } finally { |
| 424 | wpg1.dispose(); |
| 425 | } |
| 426 | } |
| 427 | |
| 428 | private boolean processXdndEnter(XClientMessageEvent xclient) { |
| 429 | long source_win = 0; |
| 430 | long source_win_mask = 0; |
| 431 | int protocol_version = 0; |
| 432 | int actions = DnDConstants.ACTION_NONE; |
| 433 | boolean track = true; |
| 434 | long[] formats = null; |
| 435 | |
| 436 | if (getSourceWindow() != 0) { |
| 437 | return false; |
| 438 | } |
| 439 | |
| 440 | if (!(XToolkit.windowToXWindow(xclient.get_window()) instanceof XWindow) |
| 441 | && getEmbedderRegistryEntry(xclient.get_window()) == null) { |
| 442 | return false; |
| 443 | } |
| 444 | |
| 445 | if (xclient.get_message_type() != XDnDConstants.XA_XdndEnter.getAtom()){ |
| 446 | return false; |
| 447 | } |
| 448 | |
| 449 | protocol_version = |
| 450 | (int)((xclient.get_data(1) & XDnDConstants.XDND_PROTOCOL_MASK) >> |
| 451 | XDnDConstants.XDND_PROTOCOL_SHIFT); |
| 452 | |
| 453 | /* XDnD compliance only requires supporting version 3 and up. */ |
| 454 | if (protocol_version < XDnDConstants.XDND_MIN_PROTOCOL_VERSION) { |
| 455 | return false; |
| 456 | } |
| 457 | |
| 458 | /* Ignore the source if the protocol version is higher than we support. */ |
| 459 | if (protocol_version > XDnDConstants.XDND_PROTOCOL_VERSION) { |
| 460 | return false; |
| 461 | } |
| 462 | |
| 463 | source_win = xclient.get_data(0); |
| 464 | |
| 465 | /* Extract the list of supported actions. */ |
| 466 | if (protocol_version < 2) { |
| 467 | /* Prior to XDnD version 2 only COPY action was supported. */ |
| 468 | actions = DnDConstants.ACTION_COPY; |
| 469 | } else { |
| 470 | WindowPropertyGetter wpg = |
| 471 | new WindowPropertyGetter(source_win, |
| 472 | XDnDConstants.XA_XdndActionList, |
| 473 | 0, 0xFFFF, false, |
| 474 | XAtom.XA_ATOM); |
| 475 | try { |
| 476 | wpg.execute(XToolkit.IgnoreBadWindowHandler); |
| 477 | |
| 478 | if (wpg.getActualType() == XAtom.XA_ATOM && |
| 479 | wpg.getActualFormat() == 32) { |
| 480 | long data = wpg.getData(); |
| 481 | |
| 482 | for (int i = 0; i < wpg.getNumberOfItems(); i++) { |
| 483 | actions |= |
| 484 | XDnDConstants.getJavaActionForXDnDAction(Native.getLong(data, i)); |
| 485 | } |
| 486 | } else { |
| 487 | /* |
| 488 | * According to XDnD protocol, XdndActionList is optional. |
| 489 | * If XdndActionList is not set we try to guess which actions are |
| 490 | * supported. |
| 491 | */ |
| 492 | actions = DnDConstants.ACTION_COPY; |
| 493 | track = true; |
| 494 | } |
| 495 | } finally { |
| 496 | wpg.dispose(); |
| 497 | } |
| 498 | } |
| 499 | |
| 500 | /* Extract the available data types. */ |
| 501 | if ((xclient.get_data(1) & XDnDConstants.XDND_DATA_TYPES_BIT) != 0) { |
| 502 | WindowPropertyGetter wpg = |
| 503 | new WindowPropertyGetter(source_win, |
| 504 | XDnDConstants.XA_XdndTypeList, |
| 505 | 0, 0xFFFF, false, |
| 506 | XAtom.XA_ATOM); |
| 507 | try { |
| 508 | wpg.execute(XToolkit.IgnoreBadWindowHandler); |
| 509 | |
| 510 | if (wpg.getActualType() == XAtom.XA_ATOM && |
| 511 | wpg.getActualFormat() == 32) { |
| 512 | formats = Native.toLongs(wpg.getData(), |
| 513 | wpg.getNumberOfItems()); |
| 514 | } else { |
| 515 | formats = new long[0]; |
| 516 | } |
| 517 | } finally { |
| 518 | wpg.dispose(); |
| 519 | } |
| 520 | } else { |
| 521 | int countFormats = 0; |
| 522 | long[] formats3 = new long[3]; |
| 523 | |
| 524 | for (int i = 0; i < 3; i++) { |
| 525 | long j; |
| 526 | if ((j = xclient.get_data(2 + i)) != XlibWrapper.None) { |
| 527 | formats3[countFormats++] = j; |
| 528 | } |
| 529 | } |
| 530 | |
| 531 | formats = new long[countFormats]; |
| 532 | |
| 533 | System.arraycopy(formats3, 0, formats, 0, countFormats); |
| 534 | } |
| 535 | |
| 536 | assert XToolkit.isAWTLockHeldByCurrentThread(); |
| 537 | |
| 538 | /* |
| 539 | * Select for StructureNotifyMask to receive DestroyNotify in case of source |
| 540 | * crash. |
| 541 | */ |
| 542 | XWindowAttributes wattr = new XWindowAttributes(); |
| 543 | try { |
| 544 | XToolkit.WITH_XERROR_HANDLER(XToolkit.IgnoreBadWindowHandler); |
| 545 | int status = XlibWrapper.XGetWindowAttributes(XToolkit.getDisplay(), |
| 546 | source_win, wattr.pData); |
| 547 | |
| 548 | XToolkit.RESTORE_XERROR_HANDLER(); |
| 549 | |
| 550 | if (status == 0 || |
| 551 | (XToolkit.saved_error != null && |
| 552 | XToolkit.saved_error.get_error_code() != XlibWrapper.Success)) { |
| 553 | throw new XException("XGetWindowAttributes failed"); |
| 554 | } |
| 555 | |
| 556 | source_win_mask = wattr.get_your_event_mask(); |
| 557 | } finally { |
| 558 | wattr.dispose(); |
| 559 | } |
| 560 | |
| 561 | XToolkit.WITH_XERROR_HANDLER(XToolkit.IgnoreBadWindowHandler); |
| 562 | XlibWrapper.XSelectInput(XToolkit.getDisplay(), source_win, |
| 563 | source_win_mask | |
| 564 | XlibWrapper.StructureNotifyMask); |
| 565 | |
| 566 | XToolkit.RESTORE_XERROR_HANDLER(); |
| 567 | |
| 568 | if (XToolkit.saved_error != null && |
| 569 | XToolkit.saved_error.get_error_code() != XlibWrapper.Success) { |
| 570 | throw new XException("XSelectInput failed"); |
| 571 | } |
| 572 | |
| 573 | sourceWindow = source_win; |
| 574 | sourceWindowMask = source_win_mask; |
| 575 | sourceProtocolVersion = protocol_version; |
| 576 | sourceActions = actions; |
| 577 | sourceFormats = formats; |
| 578 | trackSourceActions = track; |
| 579 | |
| 580 | return true; |
| 581 | } |
| 582 | |
| 583 | private boolean processXdndPosition(XClientMessageEvent xclient) { |
| 584 | long time_stamp = (int)XlibWrapper.CurrentTime; |
| 585 | long xdnd_action = 0; |
| 586 | int java_action = DnDConstants.ACTION_NONE; |
| 587 | int x = 0; |
| 588 | int y = 0; |
| 589 | |
| 590 | /* Ignore XDnD messages from all other windows. */ |
| 591 | if (sourceWindow != xclient.get_data(0)) { |
| 592 | return false; |
| 593 | } |
| 594 | |
| 595 | XWindow xwindow = null; |
| 596 | { |
| 597 | XBaseWindow xbasewindow = XToolkit.windowToXWindow(xclient.get_window()); |
| 598 | if (xbasewindow instanceof XWindow) { |
| 599 | xwindow = (XWindow)xbasewindow; |
| 600 | } |
| 601 | } |
| 602 | |
| 603 | x = (int)(xclient.get_data(2) >> 16); |
| 604 | y = (int)(xclient.get_data(2) & 0xFFFF); |
| 605 | |
| 606 | if (xwindow == null) { |
| 607 | long receiver = |
| 608 | XDropTargetRegistry.getRegistry().getEmbeddedDropSite( |
| 609 | xclient.get_window(), x, y); |
| 610 | |
| 611 | if (receiver != 0) { |
| 612 | XBaseWindow xbasewindow = XToolkit.windowToXWindow(receiver); |
| 613 | if (xbasewindow instanceof XWindow) { |
| 614 | xwindow = (XWindow)xbasewindow; |
| 615 | } |
| 616 | } |
| 617 | } |
| 618 | |
| 619 | if (xwindow != null) { |
| 620 | /* Translate mouse position from root coordinates |
| 621 | to the target window coordinates. */ |
| 622 | Point p = xwindow.toLocal(x, y); |
| 623 | x = p.x; |
| 624 | y = p.y; |
| 625 | } |
| 626 | |
| 627 | /* Time stamp - new in XDnD version 1. */ |
| 628 | if (sourceProtocolVersion > 0) { |
| 629 | time_stamp = xclient.get_data(3); |
| 630 | } |
| 631 | |
| 632 | /* User action - new in XDnD version 2. */ |
| 633 | if (sourceProtocolVersion > 1) { |
| 634 | xdnd_action = xclient.get_data(4); |
| 635 | } else { |
| 636 | /* The default action is XdndActionCopy */ |
| 637 | xdnd_action = XDnDConstants.XA_XdndActionCopy.getAtom(); |
| 638 | } |
| 639 | |
| 640 | java_action = XDnDConstants.getJavaActionForXDnDAction(xdnd_action); |
| 641 | |
| 642 | if (trackSourceActions) { |
| 643 | sourceActions |= java_action; |
| 644 | } |
| 645 | |
| 646 | if (xwindow == null) { |
| 647 | if (targetXWindow != null) { |
| 648 | notifyProtocolListener(targetXWindow, x, y, |
| 649 | DnDConstants.ACTION_NONE, xclient, |
| 650 | MouseEvent.MOUSE_EXITED); |
| 651 | } |
| 652 | } else { |
| 653 | int java_event_id = 0; |
| 654 | |
| 655 | if (targetXWindow == null) { |
| 656 | java_event_id = MouseEvent.MOUSE_ENTERED; |
| 657 | } else { |
| 658 | java_event_id = MouseEvent.MOUSE_DRAGGED; |
| 659 | } |
| 660 | |
| 661 | notifyProtocolListener(xwindow, x, y, java_action, xclient, |
| 662 | java_event_id); |
| 663 | } |
| 664 | |
| 665 | userAction = java_action; |
| 666 | sourceX = x; |
| 667 | sourceY = y; |
| 668 | targetXWindow = xwindow; |
| 669 | |
| 670 | return true; |
| 671 | } |
| 672 | |
| 673 | private boolean processXdndLeave(XClientMessageEvent xclient) { |
| 674 | /* Ignore XDnD messages from all other windows. */ |
| 675 | if (sourceWindow != xclient.get_data(0)) { |
| 676 | return false; |
| 677 | } |
| 678 | |
| 679 | cleanup(); |
| 680 | |
| 681 | return true; |
| 682 | } |
| 683 | |
| 684 | private boolean processXdndDrop(XClientMessageEvent xclient) { |
| 685 | /* Ignore XDnD messages from all other windows. */ |
| 686 | if (sourceWindow != xclient.get_data(0)) { |
| 687 | return false; |
| 688 | } |
| 689 | |
| 690 | if (targetXWindow != null) { |
| 691 | notifyProtocolListener(targetXWindow, sourceX, sourceY, userAction, |
| 692 | xclient, MouseEvent.MOUSE_RELEASED); |
| 693 | } |
| 694 | |
| 695 | return true; |
| 696 | } |
| 697 | |
| 698 | public int getMessageType(XClientMessageEvent xclient) { |
| 699 | long messageType = xclient.get_message_type(); |
| 700 | |
| 701 | if (messageType == XDnDConstants.XA_XdndEnter.getAtom()) { |
| 702 | return ENTER_MESSAGE; |
| 703 | } else if (messageType == XDnDConstants.XA_XdndPosition.getAtom()) { |
| 704 | return MOTION_MESSAGE; |
| 705 | } else if (messageType == XDnDConstants.XA_XdndLeave.getAtom()) { |
| 706 | return LEAVE_MESSAGE; |
| 707 | } else if (messageType == XDnDConstants.XA_XdndDrop.getAtom()) { |
| 708 | return DROP_MESSAGE; |
| 709 | } else { |
| 710 | return UNKNOWN_MESSAGE; |
| 711 | } |
| 712 | } |
| 713 | |
| 714 | protected boolean processClientMessageImpl(XClientMessageEvent xclient) { |
| 715 | long messageType = xclient.get_message_type(); |
| 716 | |
| 717 | if (messageType == XDnDConstants.XA_XdndEnter.getAtom()) { |
| 718 | return processXdndEnter(xclient); |
| 719 | } else if (messageType == XDnDConstants.XA_XdndPosition.getAtom()) { |
| 720 | return processXdndPosition(xclient); |
| 721 | } else if (messageType == XDnDConstants.XA_XdndLeave.getAtom()) { |
| 722 | return processXdndLeave(xclient); |
| 723 | } else if (messageType == XDnDConstants.XA_XdndDrop.getAtom()) { |
| 724 | return processXdndDrop(xclient); |
| 725 | } else { |
| 726 | return false; |
| 727 | } |
| 728 | } |
| 729 | |
| 730 | protected void sendEnterMessageToToplevel(long toplevel, |
| 731 | XClientMessageEvent xclient) { |
| 732 | /* flags */ |
| 733 | long data1 = sourceProtocolVersion << XDnDConstants.XDND_PROTOCOL_SHIFT; |
| 734 | if (sourceFormats != null && sourceFormats.length > 3) { |
| 735 | data1 |= XDnDConstants.XDND_DATA_TYPES_BIT; |
| 736 | } |
| 737 | long data2 = sourceFormats.length > 0 ? sourceFormats[0] : 0; |
| 738 | long data3 = sourceFormats.length > 1 ? sourceFormats[1] : 0; |
| 739 | long data4 = sourceFormats.length > 2 ? sourceFormats[2] : 0; |
| 740 | sendEnterMessageToToplevelImpl(toplevel, xclient.get_data(0), |
| 741 | data1, data2, data3, data4); |
| 742 | |
| 743 | } |
| 744 | |
| 745 | private void sendEnterMessageToToplevelImpl(long toplevel, |
| 746 | long sourceWindow, |
| 747 | long data1, long data2, |
| 748 | long data3, long data4) { |
| 749 | XClientMessageEvent enter = new XClientMessageEvent(); |
| 750 | try { |
| 751 | enter.set_type((int)XlibWrapper.ClientMessage); |
| 752 | enter.set_window(toplevel); |
| 753 | enter.set_format(32); |
| 754 | enter.set_message_type(XDnDConstants.XA_XdndEnter.getAtom()); |
| 755 | /* XID of the source window */ |
| 756 | enter.set_data(0, sourceWindow); |
| 757 | enter.set_data(1, data1); |
| 758 | enter.set_data(2, data2); |
| 759 | enter.set_data(3, data3); |
| 760 | enter.set_data(4, data4); |
| 761 | |
| 762 | forwardClientMessageToToplevel(toplevel, enter); |
| 763 | } finally { |
| 764 | enter.dispose(); |
| 765 | } |
| 766 | } |
| 767 | |
| 768 | protected void sendLeaveMessageToToplevel(long toplevel, |
| 769 | XClientMessageEvent xclient) { |
| 770 | sendLeaveMessageToToplevelImpl(toplevel, xclient.get_data(0)); |
| 771 | } |
| 772 | |
| 773 | protected void sendLeaveMessageToToplevelImpl(long toplevel, |
| 774 | long sourceWindow) { |
| 775 | XClientMessageEvent leave = new XClientMessageEvent(); |
| 776 | try { |
| 777 | leave.set_type((int)XlibWrapper.ClientMessage); |
| 778 | leave.set_window(toplevel); |
| 779 | leave.set_format(32); |
| 780 | leave.set_message_type(XDnDConstants.XA_XdndLeave.getAtom()); |
| 781 | /* XID of the source window */ |
| 782 | leave.set_data(0, sourceWindow); |
| 783 | /* flags */ |
| 784 | leave.set_data(1, 0); |
| 785 | |
| 786 | forwardClientMessageToToplevel(toplevel, leave); |
| 787 | } finally { |
| 788 | leave.dispose(); |
| 789 | } |
| 790 | } |
| 791 | |
| 792 | public boolean sendResponse(long ctxt, int eventID, int action) { |
| 793 | XClientMessageEvent xclient = new XClientMessageEvent(ctxt); |
| 794 | |
| 795 | if (xclient.get_message_type() != |
| 796 | XDnDConstants.XA_XdndPosition.getAtom()) { |
| 797 | |
| 798 | return false; |
| 799 | } |
| 800 | |
| 801 | if (eventID == MouseEvent.MOUSE_EXITED) { |
| 802 | action = DnDConstants.ACTION_NONE; |
| 803 | } |
| 804 | |
| 805 | XClientMessageEvent msg = new XClientMessageEvent(); |
| 806 | try { |
| 807 | msg.set_type((int)XlibWrapper.ClientMessage); |
| 808 | msg.set_window(xclient.get_data(0)); |
| 809 | msg.set_format(32); |
| 810 | msg.set_message_type(XDnDConstants.XA_XdndStatus.getAtom()); |
| 811 | /* target window */ |
| 812 | msg.set_data(0, xclient.get_window()); |
| 813 | /* flags */ |
| 814 | long flags = 0; |
| 815 | if (action != DnDConstants.ACTION_NONE) { |
| 816 | flags |= XDnDConstants.XDND_ACCEPT_DROP_FLAG; |
| 817 | } |
| 818 | msg.set_data(1, flags); |
| 819 | /* specify an empty rectangle */ |
| 820 | msg.set_data(2, 0); /* x, y */ |
| 821 | msg.set_data(3, 0); /* w, h */ |
| 822 | /* action accepted by the target */ |
| 823 | msg.set_data(4, XDnDConstants.getXDnDActionForJavaAction(action)); |
| 824 | |
| 825 | XToolkit.awtLock(); |
| 826 | try { |
| 827 | XlibWrapper.XSendEvent(XToolkit.getDisplay(), |
| 828 | xclient.get_data(0), |
| 829 | false, XlibWrapper.NoEventMask, |
| 830 | msg.pData); |
| 831 | } finally { |
| 832 | XToolkit.awtUnlock(); |
| 833 | } |
| 834 | } finally { |
| 835 | msg.dispose(); |
| 836 | } |
| 837 | |
| 838 | return true; |
| 839 | } |
| 840 | |
| 841 | public Object getData(long ctxt, long format) |
| 842 | throws IllegalArgumentException, IOException { |
| 843 | XClientMessageEvent xclient = new XClientMessageEvent(ctxt); |
| 844 | long message_type = xclient.get_message_type(); |
| 845 | long time_stamp = XlibWrapper.CurrentTime; |
| 846 | |
| 847 | // NOTE: we assume that the source supports at least version 1, so we |
| 848 | // can use the time stamp |
| 849 | if (message_type == XDnDConstants.XA_XdndPosition.getAtom()) { |
| 850 | // X server time is an unsigned 32-bit number! |
| 851 | time_stamp = xclient.get_data(3) & 0xFFFFFFFFL; |
| 852 | } else if (message_type == XDnDConstants.XA_XdndDrop.getAtom()) { |
| 853 | // X server time is an unsigned 32-bit number! |
| 854 | time_stamp = xclient.get_data(2) & 0xFFFFFFFFL; |
| 855 | } else { |
| 856 | throw new IllegalArgumentException(); |
| 857 | } |
| 858 | |
| 859 | return XDnDConstants.XDnDSelection.getData(format, time_stamp); |
| 860 | } |
| 861 | |
| 862 | public boolean sendDropDone(long ctxt, boolean success, int dropAction) { |
| 863 | XClientMessageEvent xclient = new XClientMessageEvent(ctxt); |
| 864 | |
| 865 | if (xclient.get_message_type() != |
| 866 | XDnDConstants.XA_XdndDrop.getAtom()) { |
| 867 | return false; |
| 868 | } |
| 869 | |
| 870 | /* |
| 871 | * The XDnD protocol recommends that the target requests the special |
| 872 | * target DELETE in case if the drop action is XdndActionMove. |
| 873 | */ |
| 874 | if (dropAction == DnDConstants.ACTION_MOVE && success) { |
| 875 | |
| 876 | long time_stamp = xclient.get_data(2); |
| 877 | long xdndSelectionAtom = |
| 878 | XDnDConstants.XDnDSelection.getSelectionAtom().getAtom(); |
| 879 | |
| 880 | XToolkit.awtLock(); |
| 881 | try { |
| 882 | XlibWrapper.XConvertSelection(XToolkit.getDisplay(), |
| 883 | xdndSelectionAtom, |
| 884 | XAtom.get("DELETE").getAtom(), |
| 885 | XAtom.get("XAWT_SELECTION").getAtom(), |
| 886 | XWindow.getXAWTRootWindow().getWindow(), |
| 887 | time_stamp); |
| 888 | } finally { |
| 889 | XToolkit.awtUnlock(); |
| 890 | } |
| 891 | } |
| 892 | |
| 893 | XClientMessageEvent msg = new XClientMessageEvent(); |
| 894 | try { |
| 895 | msg.set_type((int)XlibWrapper.ClientMessage); |
| 896 | msg.set_window(xclient.get_data(0)); |
| 897 | msg.set_format(32); |
| 898 | msg.set_message_type(XDnDConstants.XA_XdndFinished.getAtom()); |
| 899 | msg.set_data(0, xclient.get_window()); /* target window */ |
| 900 | msg.set_data(1, 0); /* flags */ |
| 901 | /* specify an empty rectangle */ |
| 902 | msg.set_data(2, 0); |
| 903 | if (sourceProtocolVersion >= 5) { |
| 904 | if (success) { |
| 905 | msg.set_data(1, XDnDConstants.XDND_ACCEPT_DROP_FLAG); |
| 906 | } |
| 907 | /* action performed by the target */ |
| 908 | msg.set_data(2, XDnDConstants.getXDnDActionForJavaAction(dropAction)); |
| 909 | } |
| 910 | msg.set_data(3, 0); |
| 911 | msg.set_data(4, 0); |
| 912 | |
| 913 | XToolkit.awtLock(); |
| 914 | try { |
| 915 | XlibWrapper.XSendEvent(XToolkit.getDisplay(), |
| 916 | xclient.get_data(0), |
| 917 | false, XlibWrapper.NoEventMask, |
| 918 | msg.pData); |
| 919 | } finally { |
| 920 | XToolkit.awtUnlock(); |
| 921 | } |
| 922 | } finally { |
| 923 | msg.dispose(); |
| 924 | } |
| 925 | |
| 926 | /* |
| 927 | * Flush the buffer to guarantee that the drop completion event is sent |
| 928 | * to the source before the method returns. |
| 929 | */ |
| 930 | XToolkit.awtLock(); |
| 931 | try { |
| 932 | XlibWrapper.XFlush(XToolkit.getDisplay()); |
| 933 | } finally { |
| 934 | XToolkit.awtUnlock(); |
| 935 | } |
| 936 | |
| 937 | /* Trick to prevent cleanup() from posting dragExit */ |
| 938 | targetXWindow = null; |
| 939 | |
| 940 | /* Cannot do cleanup before the drop finishes as we may need |
| 941 | source protocol version to send drop finished message. */ |
| 942 | cleanup(); |
| 943 | return true; |
| 944 | } |
| 945 | |
| 946 | public final long getSourceWindow() { |
| 947 | return sourceWindow; |
| 948 | } |
| 949 | |
| 950 | /** |
| 951 | * Reset the state of the object. |
| 952 | */ |
| 953 | public void cleanup() { |
| 954 | // Clear the reference to this protocol. |
| 955 | XDropTargetEventProcessor.reset(); |
| 956 | |
| 957 | if (targetXWindow != null) { |
| 958 | notifyProtocolListener(targetXWindow, 0, 0, |
| 959 | DnDConstants.ACTION_NONE, null, |
| 960 | MouseEvent.MOUSE_EXITED); |
| 961 | } |
| 962 | |
| 963 | if (sourceWindow != 0) { |
| 964 | XToolkit.awtLock(); |
| 965 | try { |
| 966 | XToolkit.WITH_XERROR_HANDLER(XToolkit.IgnoreBadWindowHandler); |
| 967 | XlibWrapper.XSelectInput(XToolkit.getDisplay(), sourceWindow, |
| 968 | sourceWindowMask); |
| 969 | XToolkit.RESTORE_XERROR_HANDLER(); |
| 970 | } finally { |
| 971 | XToolkit.awtUnlock(); |
| 972 | } |
| 973 | } |
| 974 | |
| 975 | sourceWindow = 0; |
| 976 | sourceWindowMask = 0; |
| 977 | sourceProtocolVersion = 0; |
| 978 | sourceActions = DnDConstants.ACTION_NONE; |
| 979 | sourceFormats = null; |
| 980 | trackSourceActions = false; |
| 981 | userAction = DnDConstants.ACTION_NONE; |
| 982 | sourceX = 0; |
| 983 | sourceY = 0; |
| 984 | targetXWindow = null; |
| 985 | } |
| 986 | |
| 987 | public boolean isDragOverComponent() { |
| 988 | return targetXWindow != null; |
| 989 | } |
| 990 | |
| 991 | public void adjustEventForForwarding(XClientMessageEvent xclient, |
| 992 | EmbedderRegistryEntry entry) { |
| 993 | /* Adjust the event to match the XDnD protocol version. */ |
| 994 | int version = entry.getVersion(); |
| 995 | if (xclient.get_message_type() == XDnDConstants.XA_XdndEnter.getAtom()) { |
| 996 | int min_version = sourceProtocolVersion < version ? |
| 997 | sourceProtocolVersion : version; |
| 998 | long data1 = min_version << XDnDConstants.XDND_PROTOCOL_SHIFT; |
| 999 | if (sourceFormats != null && sourceFormats.length > 3) { |
| 1000 | data1 |= XDnDConstants.XDND_DATA_TYPES_BIT; |
| 1001 | } |
| 1002 | if (logger.isLoggable(Level.FINEST)) { |
| 1003 | logger.finest(" " |
| 1004 | + " entryVersion=" + version |
| 1005 | + " sourceProtocolVersion=" + |
| 1006 | sourceProtocolVersion |
| 1007 | + " sourceFormats.length=" + |
| 1008 | (sourceFormats != null ? sourceFormats.length : 0)); |
| 1009 | } |
| 1010 | xclient.set_data(1, data1); |
| 1011 | } |
| 1012 | } |
| 1013 | |
| 1014 | private void notifyProtocolListener(XWindow xwindow, int x, int y, |
| 1015 | int dropAction, |
| 1016 | XClientMessageEvent xclient, |
| 1017 | int eventID) { |
| 1018 | long nativeCtxt = 0; |
| 1019 | |
| 1020 | // Make a copy of the passed XClientMessageEvent structure, since |
| 1021 | // the original structure can be freed before this |
| 1022 | // SunDropTargetEvent is dispatched. |
| 1023 | if (xclient != null) { |
| 1024 | int size = new XClientMessageEvent(nativeCtxt).getSize(); |
| 1025 | |
| 1026 | nativeCtxt = unsafe.allocateMemory(size + 4 * Native.getLongSize()); |
| 1027 | |
| 1028 | unsafe.copyMemory(xclient.pData, nativeCtxt, size); |
| 1029 | |
| 1030 | long data1 = sourceProtocolVersion << XDnDConstants.XDND_PROTOCOL_SHIFT; |
| 1031 | if (sourceFormats != null && sourceFormats.length > 3) { |
| 1032 | data1 |= XDnDConstants.XDND_DATA_TYPES_BIT; |
| 1033 | } |
| 1034 | // Append information from the latest XdndEnter event. |
| 1035 | Native.putLong(nativeCtxt + size, data1); |
| 1036 | Native.putLong(nativeCtxt + size + Native.getLongSize(), |
| 1037 | sourceFormats.length > 0 ? sourceFormats[0] : 0); |
| 1038 | Native.putLong(nativeCtxt + size + 2 * Native.getLongSize(), |
| 1039 | sourceFormats.length > 1 ? sourceFormats[1] : 0); |
| 1040 | Native.putLong(nativeCtxt + size + 3 * Native.getLongSize(), |
| 1041 | sourceFormats.length > 2 ? sourceFormats[2] : 0); |
| 1042 | } |
| 1043 | |
| 1044 | getProtocolListener().handleDropTargetNotification(xwindow, x, y, |
| 1045 | dropAction, |
| 1046 | sourceActions, |
| 1047 | sourceFormats, |
| 1048 | nativeCtxt, |
| 1049 | eventID); |
| 1050 | } |
| 1051 | |
| 1052 | /* |
| 1053 | * The methods/fields defined below are executed/accessed only on |
| 1054 | * the toolkit thread. |
| 1055 | * The methods/fields defined below are executed/accessed only on the event |
| 1056 | * dispatch thread. |
| 1057 | */ |
| 1058 | |
| 1059 | public boolean forwardEventToEmbedded(long embedded, long ctxt, |
| 1060 | int eventID) { |
| 1061 | if (logger.isLoggable(Level.FINEST)) { |
| 1062 | logger.finest(" ctxt=" + ctxt + |
| 1063 | " type=" + (ctxt != 0 ? |
| 1064 | getMessageType(new |
| 1065 | XClientMessageEvent(ctxt)) : 0) + |
| 1066 | " prevCtxt=" + prevCtxt + |
| 1067 | " prevType=" + (prevCtxt != 0 ? |
| 1068 | getMessageType(new |
| 1069 | XClientMessageEvent(prevCtxt)) : 0)); |
| 1070 | } |
| 1071 | if ((ctxt == 0 || |
| 1072 | getMessageType(new XClientMessageEvent(ctxt)) == UNKNOWN_MESSAGE) && |
| 1073 | (prevCtxt == 0 || |
| 1074 | getMessageType(new XClientMessageEvent(prevCtxt)) == UNKNOWN_MESSAGE)) { |
| 1075 | return false; |
| 1076 | } |
| 1077 | |
| 1078 | // The size of XClientMessageEvent structure. |
| 1079 | int size = XClientMessageEvent.getSize(); |
| 1080 | |
| 1081 | if (ctxt != 0) { |
| 1082 | XClientMessageEvent xclient = new XClientMessageEvent(ctxt); |
| 1083 | if (!overXEmbedClient) { |
| 1084 | long data1 = Native.getLong(ctxt + size); |
| 1085 | long data2 = Native.getLong(ctxt + size + Native.getLongSize()); |
| 1086 | long data3 = Native.getLong(ctxt + size + 2 * Native.getLongSize()); |
| 1087 | long data4 = Native.getLong(ctxt + size + 3 * Native.getLongSize()); |
| 1088 | |
| 1089 | if (logger.isLoggable(Level.FINEST)) { |
| 1090 | logger.finest(" 1 " |
| 1091 | + " embedded=" + embedded |
| 1092 | + " source=" + xclient.get_data(0) |
| 1093 | + " data1=" + data1 |
| 1094 | + " data2=" + data2 |
| 1095 | + " data3=" + data3 |
| 1096 | + " data4=" + data4); |
| 1097 | } |
| 1098 | |
| 1099 | // Copy XdndTypeList from source to proxy. |
| 1100 | if ((data1 & XDnDConstants.XDND_DATA_TYPES_BIT) != 0) { |
| 1101 | WindowPropertyGetter wpg = |
| 1102 | new WindowPropertyGetter(xclient.get_data(0), |
| 1103 | XDnDConstants.XA_XdndTypeList, |
| 1104 | 0, 0xFFFF, false, |
| 1105 | XAtom.XA_ATOM); |
| 1106 | try { |
| 1107 | wpg.execute(XToolkit.IgnoreBadWindowHandler); |
| 1108 | |
| 1109 | if (wpg.getActualType() == XAtom.XA_ATOM && |
| 1110 | wpg.getActualFormat() == 32) { |
| 1111 | |
| 1112 | XToolkit.awtLock(); |
| 1113 | try { |
| 1114 | XToolkit.WITH_XERROR_HANDLER(XWM.VerifyChangePropertyHandler); |
| 1115 | XDnDConstants.XA_XdndTypeList.setAtomData(xclient.get_window(), |
| 1116 | XAtom.XA_ATOM, |
| 1117 | wpg.getData(), |
| 1118 | wpg.getNumberOfItems()); |
| 1119 | XToolkit.RESTORE_XERROR_HANDLER(); |
| 1120 | |
| 1121 | if (XToolkit.saved_error != null && |
| 1122 | XToolkit.saved_error.get_error_code() != XlibWrapper.Success) { |
| 1123 | if (logger.isLoggable(Level.WARNING)) { |
| 1124 | logger.warning("Cannot set XdndTypeList on the proxy window"); |
| 1125 | } |
| 1126 | } |
| 1127 | } finally { |
| 1128 | XToolkit.awtUnlock(); |
| 1129 | } |
| 1130 | } else { |
| 1131 | if (logger.isLoggable(Level.WARNING)) { |
| 1132 | logger.warning("Cannot read XdndTypeList from the source window"); |
| 1133 | } |
| 1134 | } |
| 1135 | } finally { |
| 1136 | wpg.dispose(); |
| 1137 | } |
| 1138 | } |
| 1139 | XDragSourceContextPeer.setProxyModeSourceWindow(xclient.get_data(0)); |
| 1140 | |
| 1141 | sendEnterMessageToToplevelImpl(embedded, xclient.get_window(), |
| 1142 | data1, data2, data3, data4); |
| 1143 | overXEmbedClient = true; |
| 1144 | } |
| 1145 | |
| 1146 | if (logger.isLoggable(Level.FINEST)) { |
| 1147 | logger.finest(" 2 " |
| 1148 | + " embedded=" + embedded |
| 1149 | + " xclient=" + xclient); |
| 1150 | } |
| 1151 | |
| 1152 | /* Make a copy of the original event, since we are going to modify the |
| 1153 | event while it still can be referenced from other Java events. */ |
| 1154 | { |
| 1155 | XClientMessageEvent copy = new XClientMessageEvent(); |
| 1156 | unsafe.copyMemory(xclient.pData, copy.pData, copy.getSize()); |
| 1157 | |
| 1158 | copy.set_data(0, xclient.get_window()); |
| 1159 | |
| 1160 | forwardClientMessageToToplevel(embedded, copy); |
| 1161 | } |
| 1162 | } |
| 1163 | |
| 1164 | if (eventID == MouseEvent.MOUSE_EXITED) { |
| 1165 | if (overXEmbedClient) { |
| 1166 | if (ctxt != 0 || prevCtxt != 0) { |
| 1167 | // Last chance to send XdndLeave to the XEmbed client. |
| 1168 | XClientMessageEvent xclient = ctxt != 0 ? |
| 1169 | new XClientMessageEvent(ctxt) : |
| 1170 | new XClientMessageEvent(prevCtxt); |
| 1171 | sendLeaveMessageToToplevelImpl(embedded, xclient.get_window()); |
| 1172 | } |
| 1173 | overXEmbedClient = false; |
| 1174 | // We have to clear the proxy mode source window here, |
| 1175 | // when the drag exits the XEmbedCanvasPeer. |
| 1176 | // NOTE: at this point the XEmbed client still might have some |
| 1177 | // drag notifications to process and it will send responses to |
| 1178 | // us. With the proxy mode source window cleared we won't be |
| 1179 | // able to forward these responses to the actual source. This is |
| 1180 | // not a problem if the drag operation was initiated in this |
| 1181 | // JVM. However, if it was initiated in another processes the |
| 1182 | // responses will be lost. We bear with it for now, as it seems |
| 1183 | // there is no other reliable point to clear. |
| 1184 | XDragSourceContextPeer.setProxyModeSourceWindow(0); |
| 1185 | } |
| 1186 | } |
| 1187 | |
| 1188 | if (eventID == MouseEvent.MOUSE_RELEASED) { |
| 1189 | overXEmbedClient = false; |
| 1190 | cleanup(); |
| 1191 | } |
| 1192 | |
| 1193 | if (prevCtxt != 0) { |
| 1194 | unsafe.freeMemory(prevCtxt); |
| 1195 | prevCtxt = 0; |
| 1196 | } |
| 1197 | |
| 1198 | if (ctxt != 0 && overXEmbedClient) { |
| 1199 | prevCtxt = unsafe.allocateMemory(size + 4 * Native.getLongSize()); |
| 1200 | |
| 1201 | unsafe.copyMemory(ctxt, prevCtxt, size + 4 * Native.getLongSize()); |
| 1202 | } |
| 1203 | |
| 1204 | return true; |
| 1205 | } |
| 1206 | |
| 1207 | public boolean isXEmbedSupported() { |
| 1208 | return true; |
| 1209 | } |
| 1210 | } |