J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003-2007 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 sun.misc.Unsafe; |
| 37 | |
| 38 | /** |
| 39 | * XDropTargetProtocol implementation for Motif DnD protocol. |
| 40 | * |
| 41 | * @since 1.5 |
| 42 | */ |
| 43 | class MotifDnDDropTargetProtocol extends XDropTargetProtocol { |
| 44 | private static final Unsafe unsafe = XlibWrapper.unsafe; |
| 45 | |
| 46 | private long sourceWindow = 0; |
| 47 | private long sourceWindowMask = 0; |
| 48 | private int sourceProtocolVersion = 0; |
| 49 | private int sourceActions = DnDConstants.ACTION_NONE; |
| 50 | private long[] sourceFormats = null; |
| 51 | private long sourceAtom = 0; |
| 52 | private int userAction = DnDConstants.ACTION_NONE; |
| 53 | private int sourceX = 0; |
| 54 | private int sourceY = 0; |
| 55 | private XWindow targetXWindow = null; |
| 56 | private boolean topLevelLeavePostponed = false; |
| 57 | |
| 58 | protected MotifDnDDropTargetProtocol(XDropTargetProtocolListener listener) { |
| 59 | super(listener); |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * Creates an instance associated with the specified listener. |
| 64 | * |
| 65 | * @throws NullPointerException if listener is <code>null</code>. |
| 66 | */ |
| 67 | static XDropTargetProtocol createInstance(XDropTargetProtocolListener listener) { |
| 68 | return new MotifDnDDropTargetProtocol(listener); |
| 69 | } |
| 70 | |
| 71 | public String getProtocolName() { |
| 72 | return XDragAndDropProtocols.MotifDnD; |
| 73 | } |
| 74 | |
| 75 | public void registerDropTarget(long window) { |
| 76 | assert XToolkit.isAWTLockHeldByCurrentThread(); |
| 77 | |
| 78 | MotifDnDConstants.writeDragReceiverInfoStruct(window); |
| 79 | } |
| 80 | |
| 81 | public void unregisterDropTarget(long window) { |
| 82 | assert XToolkit.isAWTLockHeldByCurrentThread(); |
| 83 | |
| 84 | MotifDnDConstants.XA_MOTIF_ATOM_0.DeleteProperty(window); |
| 85 | } |
| 86 | |
| 87 | public void registerEmbedderDropSite(long embedder) { |
| 88 | assert XToolkit.isAWTLockHeldByCurrentThread(); |
| 89 | |
| 90 | boolean overriden = false; |
| 91 | int version = 0; |
| 92 | long proxy = 0; |
| 93 | long newProxy = XDropTargetRegistry.getDnDProxyWindow(); |
| 94 | int status = 0; |
| 95 | long data = 0; |
| 96 | int dataSize = MotifDnDConstants.MOTIF_RECEIVER_INFO_SIZE; |
| 97 | |
| 98 | WindowPropertyGetter wpg = |
| 99 | new WindowPropertyGetter(embedder, |
| 100 | MotifDnDConstants.XA_MOTIF_DRAG_RECEIVER_INFO, |
| 101 | 0, 0xFFFF, false, |
| 102 | XlibWrapper.AnyPropertyType); |
| 103 | |
| 104 | try { |
| 105 | status = wpg.execute(XToolkit.IgnoreBadWindowHandler); |
| 106 | |
| 107 | /* |
| 108 | * DragICCI.h: |
| 109 | * |
| 110 | * typedef struct _xmDragReceiverInfoStruct{ |
| 111 | * BYTE byte_order; |
| 112 | * BYTE protocol_version; |
| 113 | * BYTE drag_protocol_style; |
| 114 | * BYTE pad1; |
| 115 | * CARD32 proxy_window B32; |
| 116 | * CARD16 num_drop_sites B16; |
| 117 | * CARD16 pad2 B16; |
| 118 | * CARD32 heap_offset B32; |
| 119 | * } xmDragReceiverInfoStruct; |
| 120 | */ |
| 121 | if (status == (int)XlibWrapper.Success && wpg.getData() != 0 && |
| 122 | wpg.getActualType() != 0 && wpg.getActualFormat() == 8 && |
| 123 | wpg.getNumberOfItems() >= |
| 124 | MotifDnDConstants.MOTIF_RECEIVER_INFO_SIZE) { |
| 125 | |
| 126 | overriden = true; |
| 127 | data = wpg.getData(); |
| 128 | dataSize = wpg.getNumberOfItems(); |
| 129 | |
| 130 | byte byteOrderByte = unsafe.getByte(data); |
| 131 | |
| 132 | { |
| 133 | int tproxy = unsafe.getInt(data + 4); |
| 134 | if (byteOrderByte != MotifDnDConstants.getByteOrderByte()) { |
| 135 | tproxy = MotifDnDConstants.Swapper.swap(tproxy); |
| 136 | } |
| 137 | proxy = tproxy; |
| 138 | } |
| 139 | |
| 140 | if (proxy == newProxy) { |
| 141 | // Embedder already registered. |
| 142 | return; |
| 143 | } |
| 144 | |
| 145 | { |
| 146 | int tproxy = (int)newProxy; |
| 147 | if (byteOrderByte != MotifDnDConstants.getByteOrderByte()) { |
| 148 | tproxy = MotifDnDConstants.Swapper.swap(tproxy); |
| 149 | } |
| 150 | unsafe.putInt(data + 4, tproxy); |
| 151 | } |
| 152 | } else { |
| 153 | data = unsafe.allocateMemory(dataSize); |
| 154 | |
| 155 | unsafe.putByte(data, MotifDnDConstants.getByteOrderByte()); /* byte order */ |
| 156 | unsafe.putByte(data + 1, MotifDnDConstants.MOTIF_DND_PROTOCOL_VERSION); /* protocol version */ |
| 157 | unsafe.putByte(data + 2, (byte)MotifDnDConstants.MOTIF_DYNAMIC_STYLE); /* protocol style */ |
| 158 | unsafe.putByte(data + 3, (byte)0); /* pad */ |
| 159 | unsafe.putInt(data + 4, (int)newProxy); /* proxy window */ |
| 160 | unsafe.putShort(data + 8, (short)0); /* num_drop_sites */ |
| 161 | unsafe.putShort(data + 10, (short)0); /* pad */ |
| 162 | unsafe.putInt(data + 12, dataSize); |
| 163 | } |
| 164 | |
| 165 | XToolkit.WITH_XERROR_HANDLER(XWM.VerifyChangePropertyHandler); |
| 166 | XlibWrapper.XChangeProperty(XToolkit.getDisplay(), embedder, |
| 167 | MotifDnDConstants.XA_MOTIF_DRAG_RECEIVER_INFO.getAtom(), |
| 168 | MotifDnDConstants.XA_MOTIF_DRAG_RECEIVER_INFO.getAtom(), |
| 169 | 8, XlibWrapper.PropModeReplace, |
| 170 | data, dataSize); |
| 171 | XToolkit.RESTORE_XERROR_HANDLER(); |
| 172 | |
| 173 | if (XToolkit.saved_error != null && |
| 174 | XToolkit.saved_error.get_error_code() != XlibWrapper.Success) { |
| 175 | throw new XException("Cannot write Motif receiver info property"); |
| 176 | } |
| 177 | } finally { |
| 178 | if (!overriden) { |
| 179 | unsafe.freeMemory(data); |
| 180 | data = 0; |
| 181 | } |
| 182 | wpg.dispose(); |
| 183 | } |
| 184 | |
| 185 | putEmbedderRegistryEntry(embedder, overriden, version, proxy); |
| 186 | } |
| 187 | |
| 188 | public void unregisterEmbedderDropSite(long embedder) { |
| 189 | assert XToolkit.isAWTLockHeldByCurrentThread(); |
| 190 | |
| 191 | EmbedderRegistryEntry entry = getEmbedderRegistryEntry(embedder); |
| 192 | |
| 193 | if (entry == null) { |
| 194 | return; |
| 195 | } |
| 196 | |
| 197 | if (entry.isOverriden()) { |
| 198 | int status = 0; |
| 199 | |
| 200 | WindowPropertyGetter wpg = |
| 201 | new WindowPropertyGetter(embedder, |
| 202 | MotifDnDConstants.XA_MOTIF_DRAG_RECEIVER_INFO, |
| 203 | 0, 0xFFFF, false, |
| 204 | XlibWrapper.AnyPropertyType); |
| 205 | |
| 206 | try { |
| 207 | status = wpg.execute(XToolkit.IgnoreBadWindowHandler); |
| 208 | |
| 209 | /* |
| 210 | * DragICCI.h: |
| 211 | * |
| 212 | * typedef struct _xmDragReceiverInfoStruct{ |
| 213 | * BYTE byte_order; |
| 214 | * BYTE protocol_version; |
| 215 | * BYTE drag_protocol_style; |
| 216 | * BYTE pad1; |
| 217 | * CARD32 proxy_window B32; |
| 218 | * CARD16 num_drop_sites B16; |
| 219 | * CARD16 pad2 B16; |
| 220 | * CARD32 heap_offset B32; |
| 221 | * } xmDragReceiverInfoStruct; |
| 222 | */ |
| 223 | if (status == (int)XlibWrapper.Success && wpg.getData() != 0 && |
| 224 | wpg.getActualType() != 0 && wpg.getActualFormat() == 8 && |
| 225 | wpg.getNumberOfItems() >= |
| 226 | MotifDnDConstants.MOTIF_RECEIVER_INFO_SIZE) { |
| 227 | |
| 228 | int dataSize = MotifDnDConstants.MOTIF_RECEIVER_INFO_SIZE; |
| 229 | long data = wpg.getData(); |
| 230 | byte byteOrderByte = unsafe.getByte(data); |
| 231 | |
| 232 | int tproxy = (int)entry.getProxy(); |
| 233 | if (MotifDnDConstants.getByteOrderByte() != byteOrderByte) { |
| 234 | tproxy = MotifDnDConstants.Swapper.swap(tproxy); |
| 235 | } |
| 236 | |
| 237 | unsafe.putInt(data + 4, tproxy); |
| 238 | |
| 239 | XToolkit.WITH_XERROR_HANDLER(XWM.VerifyChangePropertyHandler); |
| 240 | XlibWrapper.XChangeProperty(XToolkit.getDisplay(), embedder, |
| 241 | MotifDnDConstants.XA_MOTIF_DRAG_RECEIVER_INFO.getAtom(), |
| 242 | MotifDnDConstants.XA_MOTIF_DRAG_RECEIVER_INFO.getAtom(), |
| 243 | 8, XlibWrapper.PropModeReplace, |
| 244 | data, dataSize); |
| 245 | XToolkit.RESTORE_XERROR_HANDLER(); |
| 246 | |
| 247 | if (XToolkit.saved_error != null && |
| 248 | XToolkit.saved_error.get_error_code() != XlibWrapper.Success) { |
| 249 | throw new XException("Cannot write Motif receiver info property"); |
| 250 | } |
| 251 | } |
| 252 | } finally { |
| 253 | wpg.dispose(); |
| 254 | } |
| 255 | } else { |
| 256 | MotifDnDConstants.XA_MOTIF_DRAG_RECEIVER_INFO.DeleteProperty(embedder); |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | /* |
| 261 | * Gets and stores in the registry the embedder's Motif DnD drop site info |
| 262 | * from the embedded. |
| 263 | */ |
| 264 | public void registerEmbeddedDropSite(long embedded) { |
| 265 | assert XToolkit.isAWTLockHeldByCurrentThread(); |
| 266 | |
| 267 | boolean overriden = false; |
| 268 | int version = 0; |
| 269 | long proxy = 0; |
| 270 | int status = 0; |
| 271 | |
| 272 | WindowPropertyGetter wpg = |
| 273 | new WindowPropertyGetter(embedded, |
| 274 | MotifDnDConstants.XA_MOTIF_DRAG_RECEIVER_INFO, |
| 275 | 0, 0xFFFF, false, |
| 276 | XlibWrapper.AnyPropertyType); |
| 277 | |
| 278 | try { |
| 279 | status = wpg.execute(XToolkit.IgnoreBadWindowHandler); |
| 280 | |
| 281 | /* |
| 282 | * DragICCI.h: |
| 283 | * |
| 284 | * typedef struct _xmDragReceiverInfoStruct{ |
| 285 | * BYTE byte_order; |
| 286 | * BYTE protocol_version; |
| 287 | * BYTE drag_protocol_style; |
| 288 | * BYTE pad1; |
| 289 | * CARD32 proxy_window B32; |
| 290 | * CARD16 num_drop_sites B16; |
| 291 | * CARD16 pad2 B16; |
| 292 | * CARD32 heap_offset B32; |
| 293 | * } xmDragReceiverInfoStruct; |
| 294 | */ |
| 295 | if (status == (int)XlibWrapper.Success && wpg.getData() != 0 && |
| 296 | wpg.getActualType() != 0 && wpg.getActualFormat() == 8 && |
| 297 | wpg.getNumberOfItems() >= |
| 298 | MotifDnDConstants.MOTIF_RECEIVER_INFO_SIZE) { |
| 299 | |
| 300 | overriden = true; |
| 301 | long data = wpg.getData(); |
| 302 | |
| 303 | byte byteOrderByte = unsafe.getByte(data); |
| 304 | |
| 305 | { |
| 306 | int tproxy = unsafe.getInt(data + 4); |
| 307 | if (byteOrderByte != MotifDnDConstants.getByteOrderByte()) { |
| 308 | tproxy = MotifDnDConstants.Swapper.swap(tproxy); |
| 309 | } |
| 310 | proxy = tproxy; |
| 311 | } |
| 312 | } |
| 313 | } finally { |
| 314 | wpg.dispose(); |
| 315 | } |
| 316 | |
| 317 | putEmbedderRegistryEntry(embedded, overriden, version, proxy); |
| 318 | } |
| 319 | |
| 320 | public boolean isProtocolSupported(long window) { |
| 321 | WindowPropertyGetter wpg = |
| 322 | new WindowPropertyGetter(window, |
| 323 | MotifDnDConstants.XA_MOTIF_DRAG_RECEIVER_INFO, |
| 324 | 0, 0xFFFF, false, |
| 325 | XlibWrapper.AnyPropertyType); |
| 326 | |
| 327 | try { |
| 328 | int status = wpg.execute(XToolkit.IgnoreBadWindowHandler); |
| 329 | |
| 330 | if (status == (int)XlibWrapper.Success && wpg.getData() != 0 && |
| 331 | wpg.getActualType() != 0 && wpg.getActualFormat() == 8 && |
| 332 | wpg.getNumberOfItems() >= |
| 333 | MotifDnDConstants.MOTIF_RECEIVER_INFO_SIZE) { |
| 334 | return true; |
| 335 | } else { |
| 336 | return false; |
| 337 | } |
| 338 | } finally { |
| 339 | wpg.dispose(); |
| 340 | } |
| 341 | } |
| 342 | |
| 343 | private boolean processTopLevelEnter(XClientMessageEvent xclient) { |
| 344 | assert XToolkit.isAWTLockHeldByCurrentThread(); |
| 345 | |
| 346 | if (targetXWindow != null || sourceWindow != 0) { |
| 347 | return false; |
| 348 | } |
| 349 | |
| 350 | if (!(XToolkit.windowToXWindow(xclient.get_window()) instanceof XWindow) |
| 351 | && getEmbedderRegistryEntry(xclient.get_window()) == null) { |
| 352 | return false; |
| 353 | } |
| 354 | |
| 355 | long source_win = 0; |
| 356 | long source_win_mask = 0; |
| 357 | int protocol_version = 0; |
| 358 | long property_atom = 0; |
| 359 | long[] formats = null; |
| 360 | |
| 361 | { |
| 362 | long data = xclient.get_data(); |
| 363 | byte eventByteOrder = unsafe.getByte(data + 1); |
| 364 | source_win = MotifDnDConstants.Swapper.getInt(data + 8, eventByteOrder); |
| 365 | property_atom = MotifDnDConstants.Swapper.getInt(data + 12, eventByteOrder); |
| 366 | } |
| 367 | |
| 368 | /* Extract the available data types. */ |
| 369 | { |
| 370 | WindowPropertyGetter wpg = |
| 371 | new WindowPropertyGetter(source_win, |
| 372 | XAtom.get(property_atom), |
| 373 | 0, 0xFFFF, |
| 374 | false, |
| 375 | MotifDnDConstants.XA_MOTIF_DRAG_INITIATOR_INFO.getAtom()); |
| 376 | |
| 377 | try { |
| 378 | int status = wpg.execute(XToolkit.IgnoreBadWindowHandler); |
| 379 | |
| 380 | if (status == XlibWrapper.Success && wpg.getData() != 0 && |
| 381 | wpg.getActualType() == |
| 382 | MotifDnDConstants.XA_MOTIF_DRAG_INITIATOR_INFO.getAtom() && |
| 383 | wpg.getActualFormat() == 8 && |
| 384 | wpg.getNumberOfItems() == |
| 385 | MotifDnDConstants.MOTIF_INITIATOR_INFO_SIZE) { |
| 386 | |
| 387 | long data = wpg.getData(); |
| 388 | byte propertyByteOrder = unsafe.getByte(data); |
| 389 | |
| 390 | protocol_version = unsafe.getByte(data + 1); |
| 391 | |
| 392 | if (protocol_version != |
| 393 | MotifDnDConstants.MOTIF_DND_PROTOCOL_VERSION) { |
| 394 | return false; |
| 395 | } |
| 396 | |
| 397 | int index = |
| 398 | MotifDnDConstants.Swapper.getShort(data + 2, propertyByteOrder); |
| 399 | |
| 400 | formats = MotifDnDConstants.getTargetListForIndex(index); |
| 401 | } else { |
| 402 | formats = new long[0]; |
| 403 | } |
| 404 | } finally { |
| 405 | wpg.dispose(); |
| 406 | } |
| 407 | } |
| 408 | |
| 409 | /* |
| 410 | * Select for StructureNotifyMask to receive DestroyNotify in case of source |
| 411 | * crash. |
| 412 | */ |
| 413 | XWindowAttributes wattr = new XWindowAttributes(); |
| 414 | try { |
| 415 | XToolkit.WITH_XERROR_HANDLER(XToolkit.IgnoreBadWindowHandler); |
| 416 | int status = XlibWrapper.XGetWindowAttributes(XToolkit.getDisplay(), |
| 417 | source_win, wattr.pData); |
| 418 | |
| 419 | XToolkit.RESTORE_XERROR_HANDLER(); |
| 420 | |
| 421 | if (status == 0 || |
| 422 | (XToolkit.saved_error != null && |
| 423 | XToolkit.saved_error.get_error_code() != XlibWrapper.Success)) { |
| 424 | throw new XException("XGetWindowAttributes failed"); |
| 425 | } |
| 426 | |
| 427 | source_win_mask = wattr.get_your_event_mask(); |
| 428 | } finally { |
| 429 | wattr.dispose(); |
| 430 | } |
| 431 | |
| 432 | XToolkit.WITH_XERROR_HANDLER(XToolkit.IgnoreBadWindowHandler); |
| 433 | XlibWrapper.XSelectInput(XToolkit.getDisplay(), source_win, |
| 434 | source_win_mask | |
| 435 | XlibWrapper.StructureNotifyMask); |
| 436 | |
| 437 | XToolkit.RESTORE_XERROR_HANDLER(); |
| 438 | |
| 439 | if (XToolkit.saved_error != null && |
| 440 | XToolkit.saved_error.get_error_code() != XlibWrapper.Success) { |
| 441 | throw new XException("XSelectInput failed"); |
| 442 | } |
| 443 | |
| 444 | sourceWindow = source_win; |
| 445 | sourceWindowMask = source_win_mask; |
| 446 | sourceProtocolVersion = protocol_version; |
| 447 | /* |
| 448 | * TOP_LEVEL_ENTER doesn't communicate the list of supported actions |
| 449 | * They are provided in DRAG_MOTION. |
| 450 | */ |
| 451 | sourceActions = DnDConstants.ACTION_NONE; |
| 452 | sourceFormats = formats; |
| 453 | sourceAtom = property_atom; |
| 454 | |
| 455 | return true; |
| 456 | } |
| 457 | |
| 458 | private boolean processDragMotion(XClientMessageEvent xclient) { |
| 459 | long data = xclient.get_data(); |
| 460 | byte eventByteOrder = unsafe.getByte(data + 1); |
| 461 | byte eventReason = (byte)(unsafe.getByte(data) & |
| 462 | MotifDnDConstants.MOTIF_MESSAGE_REASON_MASK); |
| 463 | int x = 0; |
| 464 | int y = 0; |
| 465 | |
| 466 | short flags = MotifDnDConstants.Swapper.getShort(data + 2, eventByteOrder); |
| 467 | |
| 468 | int motif_action = (flags & MotifDnDConstants.MOTIF_DND_ACTION_MASK) >> |
| 469 | MotifDnDConstants.MOTIF_DND_ACTION_SHIFT; |
| 470 | int motif_actions = (flags & MotifDnDConstants.MOTIF_DND_ACTIONS_MASK) >> |
| 471 | MotifDnDConstants.MOTIF_DND_ACTIONS_SHIFT; |
| 472 | |
| 473 | int java_action = MotifDnDConstants.getJavaActionsForMotifActions(motif_action); |
| 474 | int java_actions = MotifDnDConstants.getJavaActionsForMotifActions(motif_actions); |
| 475 | |
| 476 | /* Append source window id to the event data, so that we can send the |
| 477 | response properly. */ |
| 478 | { |
| 479 | int win = (int)sourceWindow; |
| 480 | if (eventByteOrder != MotifDnDConstants.getByteOrderByte()) { |
| 481 | win = MotifDnDConstants.Swapper.swap(win); |
| 482 | } |
| 483 | unsafe.putInt(data + 12, win); |
| 484 | } |
| 485 | |
| 486 | XWindow xwindow = null; |
| 487 | { |
| 488 | XBaseWindow xbasewindow = XToolkit.windowToXWindow(xclient.get_window()); |
| 489 | if (xbasewindow instanceof XWindow) { |
| 490 | xwindow = (XWindow)xbasewindow; |
| 491 | } |
| 492 | } |
| 493 | |
| 494 | if (eventReason == MotifDnDConstants.OPERATION_CHANGED) { |
| 495 | /* OPERATION_CHANGED event doesn't provide coordinates, so we use |
| 496 | previously stored position and component ref. */ |
| 497 | x = sourceX; |
| 498 | y = sourceY; |
| 499 | |
| 500 | if (xwindow == null) { |
| 501 | xwindow = targetXWindow; |
| 502 | } |
| 503 | } else { |
| 504 | x = MotifDnDConstants.Swapper.getShort(data + 8, eventByteOrder); |
| 505 | y = MotifDnDConstants.Swapper.getShort(data + 10, eventByteOrder); |
| 506 | |
| 507 | if (xwindow == null) { |
| 508 | long receiver = |
| 509 | XDropTargetRegistry.getRegistry().getEmbeddedDropSite( |
| 510 | xclient.get_window(), x, y); |
| 511 | |
| 512 | if (receiver != 0) { |
| 513 | XBaseWindow xbasewindow = XToolkit.windowToXWindow(receiver); |
| 514 | if (xbasewindow instanceof XWindow) { |
| 515 | xwindow = (XWindow)xbasewindow; |
| 516 | } |
| 517 | } |
| 518 | } |
| 519 | |
| 520 | if (xwindow != null) { |
| 521 | Point p = xwindow.toLocal(x, y); |
| 522 | x = p.x; |
| 523 | y = p.y; |
| 524 | } |
| 525 | } |
| 526 | |
| 527 | if (xwindow == null) { |
| 528 | if (targetXWindow != null) { |
| 529 | notifyProtocolListener(targetXWindow, x, y, |
| 530 | DnDConstants.ACTION_NONE, java_actions, |
| 531 | xclient, MouseEvent.MOUSE_EXITED); |
| 532 | } |
| 533 | } else { |
| 534 | int java_event_id = 0; |
| 535 | |
| 536 | if (targetXWindow == null) { |
| 537 | java_event_id = MouseEvent.MOUSE_ENTERED; |
| 538 | } else { |
| 539 | java_event_id = MouseEvent.MOUSE_DRAGGED; |
| 540 | } |
| 541 | |
| 542 | notifyProtocolListener(xwindow, x, y, java_action, java_actions, |
| 543 | xclient, java_event_id); |
| 544 | } |
| 545 | |
| 546 | sourceActions = java_actions; |
| 547 | userAction = java_action; |
| 548 | sourceX = x; |
| 549 | sourceY = y; |
| 550 | targetXWindow = xwindow; |
| 551 | |
| 552 | return true; |
| 553 | } |
| 554 | |
| 555 | private boolean processTopLevelLeave(XClientMessageEvent xclient) { |
| 556 | assert XToolkit.isAWTLockHeldByCurrentThread(); |
| 557 | |
| 558 | long data = xclient.get_data(); |
| 559 | byte eventByteOrder = unsafe.getByte(data + 1); |
| 560 | |
| 561 | long source_win = MotifDnDConstants.Swapper.getInt(data + 8, eventByteOrder); |
| 562 | |
| 563 | /* Ignore Motif DnD messages from all other windows. */ |
| 564 | if (source_win != sourceWindow) { |
| 565 | return false; |
| 566 | } |
| 567 | |
| 568 | /* |
| 569 | * Postpone upcall to java, so that we can abort it in case |
| 570 | * if drop immediatelly follows (see BugTraq ID 4395290). |
| 571 | * Send a dummy ClientMessage event to guarantee that a postponed java |
| 572 | * upcall will be processed. |
| 573 | */ |
| 574 | topLevelLeavePostponed = true; |
| 575 | { |
| 576 | long proxy; |
| 577 | |
| 578 | /* |
| 579 | * If this is an embedded drop site, the event should go to the |
| 580 | * awt_root_window as this is a proxy for all embedded drop sites. |
| 581 | * Otherwise the event should go to the event->window, as we don't use |
| 582 | * proxies for normal drop sites. |
| 583 | */ |
| 584 | if (getEmbedderRegistryEntry(xclient.get_window()) != null) { |
| 585 | proxy = XDropTargetRegistry.getDnDProxyWindow(); |
| 586 | } else { |
| 587 | proxy = xclient.get_window(); |
| 588 | } |
| 589 | |
| 590 | XClientMessageEvent dummy = new XClientMessageEvent(); |
| 591 | |
| 592 | try { |
| 593 | dummy.set_type(XlibWrapper.ClientMessage); |
| 594 | dummy.set_window(xclient.get_window()); |
| 595 | dummy.set_format(32); |
| 596 | dummy.set_message_type(0); |
| 597 | dummy.set_data(0, 0); |
| 598 | dummy.set_data(1, 0); |
| 599 | dummy.set_data(2, 0); |
| 600 | dummy.set_data(3, 0); |
| 601 | dummy.set_data(4, 0); |
| 602 | XlibWrapper.XSendEvent(XToolkit.getDisplay(), |
| 603 | proxy, false, XlibWrapper.NoEventMask, |
| 604 | dummy.pData); |
| 605 | } finally { |
| 606 | dummy.dispose(); |
| 607 | } |
| 608 | } |
| 609 | return true; |
| 610 | } |
| 611 | |
| 612 | private boolean processDropStart(XClientMessageEvent xclient) { |
| 613 | long data = xclient.get_data(); |
| 614 | byte eventByteOrder = unsafe.getByte(data + 1); |
| 615 | |
| 616 | long source_win = |
| 617 | MotifDnDConstants.Swapper.getInt(data + 16, eventByteOrder); |
| 618 | |
| 619 | /* Ignore Motif DnD messages from all other windows. */ |
| 620 | if (source_win != sourceWindow) { |
| 621 | return false; |
| 622 | } |
| 623 | |
| 624 | long property_atom = |
| 625 | MotifDnDConstants.Swapper.getInt(data + 12, eventByteOrder); |
| 626 | |
| 627 | short flags = |
| 628 | MotifDnDConstants.Swapper.getShort(data + 2, eventByteOrder); |
| 629 | |
| 630 | int motif_action = (flags & MotifDnDConstants.MOTIF_DND_ACTION_MASK) >> |
| 631 | MotifDnDConstants.MOTIF_DND_ACTION_SHIFT; |
| 632 | int motif_actions = (flags & MotifDnDConstants.MOTIF_DND_ACTIONS_MASK) >> |
| 633 | MotifDnDConstants.MOTIF_DND_ACTIONS_SHIFT; |
| 634 | |
| 635 | int java_action = MotifDnDConstants.getJavaActionsForMotifActions(motif_action); |
| 636 | int java_actions = MotifDnDConstants.getJavaActionsForMotifActions(motif_actions); |
| 637 | |
| 638 | int x = MotifDnDConstants.Swapper.getShort(data + 8, eventByteOrder); |
| 639 | int y = MotifDnDConstants.Swapper.getShort(data + 10, eventByteOrder); |
| 640 | |
| 641 | XWindow xwindow = null; |
| 642 | { |
| 643 | XBaseWindow xbasewindow = XToolkit.windowToXWindow(xclient.get_window()); |
| 644 | if (xbasewindow instanceof XWindow) { |
| 645 | xwindow = (XWindow)xbasewindow; |
| 646 | } |
| 647 | } |
| 648 | |
| 649 | if (xwindow == null) { |
| 650 | long receiver = |
| 651 | XDropTargetRegistry.getRegistry().getEmbeddedDropSite( |
| 652 | xclient.get_window(), x, y); |
| 653 | |
| 654 | if (receiver != 0) { |
| 655 | XBaseWindow xbasewindow = XToolkit.windowToXWindow(receiver); |
| 656 | if (xbasewindow instanceof XWindow) { |
| 657 | xwindow = (XWindow)xbasewindow; |
| 658 | } |
| 659 | } |
| 660 | } |
| 661 | |
| 662 | if (xwindow != null) { |
| 663 | Point p = xwindow.toLocal(x, y); |
| 664 | x = p.x; |
| 665 | y = p.y; |
| 666 | } |
| 667 | |
| 668 | if (xwindow != null) { |
| 669 | notifyProtocolListener(xwindow, x, y, java_action, java_actions, |
| 670 | xclient, MouseEvent.MOUSE_RELEASED); |
| 671 | } else if (targetXWindow != null) { |
| 672 | notifyProtocolListener(targetXWindow, x, y, |
| 673 | DnDConstants.ACTION_NONE, java_actions, |
| 674 | xclient, MouseEvent.MOUSE_EXITED); |
| 675 | } |
| 676 | |
| 677 | return true; |
| 678 | } |
| 679 | |
| 680 | public int getMessageType(XClientMessageEvent xclient) { |
| 681 | if (xclient.get_message_type() != |
| 682 | MotifDnDConstants.XA_MOTIF_DRAG_AND_DROP_MESSAGE.getAtom()) { |
| 683 | |
| 684 | return UNKNOWN_MESSAGE; |
| 685 | } |
| 686 | |
| 687 | long data = xclient.get_data(); |
| 688 | byte reason = (byte)(unsafe.getByte(data) & |
| 689 | MotifDnDConstants.MOTIF_MESSAGE_REASON_MASK); |
| 690 | |
| 691 | switch (reason) { |
| 692 | case MotifDnDConstants.TOP_LEVEL_ENTER : |
| 693 | return ENTER_MESSAGE; |
| 694 | case MotifDnDConstants.DRAG_MOTION : |
| 695 | case MotifDnDConstants.OPERATION_CHANGED : |
| 696 | return MOTION_MESSAGE; |
| 697 | case MotifDnDConstants.TOP_LEVEL_LEAVE : |
| 698 | return LEAVE_MESSAGE; |
| 699 | case MotifDnDConstants.DROP_START : |
| 700 | return DROP_MESSAGE; |
| 701 | default: |
| 702 | return UNKNOWN_MESSAGE; |
| 703 | } |
| 704 | } |
| 705 | |
| 706 | protected boolean processClientMessageImpl(XClientMessageEvent xclient) { |
| 707 | if (xclient.get_message_type() != |
| 708 | MotifDnDConstants.XA_MOTIF_DRAG_AND_DROP_MESSAGE.getAtom()) { |
| 709 | if (topLevelLeavePostponed) { |
| 710 | topLevelLeavePostponed = false; |
| 711 | cleanup(); |
| 712 | } |
| 713 | |
| 714 | return false; |
| 715 | } |
| 716 | |
| 717 | long data = xclient.get_data(); |
| 718 | byte reason = (byte)(unsafe.getByte(data) & |
| 719 | MotifDnDConstants.MOTIF_MESSAGE_REASON_MASK); |
| 720 | byte origin = (byte)(unsafe.getByte(data) & |
| 721 | MotifDnDConstants.MOTIF_MESSAGE_SENDER_MASK); |
| 722 | |
| 723 | if (topLevelLeavePostponed) { |
| 724 | topLevelLeavePostponed = false; |
| 725 | if (reason != MotifDnDConstants.DROP_START) { |
| 726 | cleanup(); |
| 727 | } |
| 728 | } |
| 729 | |
| 730 | /* Only initiator messages should be handled. */ |
| 731 | if (origin != MotifDnDConstants.MOTIF_MESSAGE_FROM_INITIATOR) { |
| 732 | return false; |
| 733 | } |
| 734 | |
| 735 | switch (reason) { |
| 736 | case MotifDnDConstants.TOP_LEVEL_ENTER : |
| 737 | return processTopLevelEnter(xclient); |
| 738 | case MotifDnDConstants.DRAG_MOTION : |
| 739 | case MotifDnDConstants.OPERATION_CHANGED : |
| 740 | return processDragMotion(xclient); |
| 741 | case MotifDnDConstants.TOP_LEVEL_LEAVE : |
| 742 | return processTopLevelLeave(xclient); |
| 743 | case MotifDnDConstants.DROP_START : |
| 744 | return processDropStart(xclient); |
| 745 | default: |
| 746 | return false; |
| 747 | } |
| 748 | } |
| 749 | |
| 750 | /* |
| 751 | * Currently we don't synthesize enter/leave messages for Motif DnD |
| 752 | * protocol. See comments in XDropTargetProtocol.postProcessClientMessage. |
| 753 | */ |
| 754 | protected void sendEnterMessageToToplevel(long win, |
| 755 | XClientMessageEvent xclient) { |
| 756 | throw new Error("UNIMPLEMENTED"); |
| 757 | } |
| 758 | |
| 759 | protected void sendLeaveMessageToToplevel(long win, |
| 760 | XClientMessageEvent xclient) { |
| 761 | throw new Error("UNIMPLEMENTED"); |
| 762 | } |
| 763 | |
| 764 | public boolean forwardEventToEmbedded(long embedded, long ctxt, |
| 765 | int eventID) { |
| 766 | // UNIMPLEMENTED. |
| 767 | return false; |
| 768 | } |
| 769 | |
| 770 | public boolean isXEmbedSupported() { |
| 771 | return false; |
| 772 | } |
| 773 | |
| 774 | public boolean sendResponse(long ctxt, int eventID, int action) { |
| 775 | XClientMessageEvent xclient = new XClientMessageEvent(ctxt); |
| 776 | if (xclient.get_message_type() != |
| 777 | MotifDnDConstants.XA_MOTIF_DRAG_AND_DROP_MESSAGE.getAtom()) { |
| 778 | return false; |
| 779 | } |
| 780 | |
| 781 | long data = xclient.get_data(); |
| 782 | byte reason = (byte)(unsafe.getByte(data) & |
| 783 | MotifDnDConstants.MOTIF_MESSAGE_REASON_MASK); |
| 784 | byte origin = (byte)(unsafe.getByte(data) & |
| 785 | MotifDnDConstants.MOTIF_MESSAGE_SENDER_MASK); |
| 786 | byte eventByteOrder = unsafe.getByte(data + 1); |
| 787 | byte response_reason = (byte)0; |
| 788 | |
| 789 | /* Only initiator messages should be handled. */ |
| 790 | if (origin != MotifDnDConstants.MOTIF_MESSAGE_FROM_INITIATOR) { |
| 791 | return false; |
| 792 | } |
| 793 | |
| 794 | switch (reason) { |
| 795 | case MotifDnDConstants.TOP_LEVEL_ENTER: |
| 796 | case MotifDnDConstants.TOP_LEVEL_LEAVE: |
| 797 | /* Receiver shouldn't rely to these messages. */ |
| 798 | return false; |
| 799 | case MotifDnDConstants.DRAG_MOTION: |
| 800 | switch (eventID) { |
| 801 | case MouseEvent.MOUSE_ENTERED: |
| 802 | response_reason = MotifDnDConstants.DROP_SITE_ENTER; |
| 803 | break; |
| 804 | case MouseEvent.MOUSE_DRAGGED: |
| 805 | response_reason = MotifDnDConstants.DRAG_MOTION; |
| 806 | break; |
| 807 | case MouseEvent.MOUSE_EXITED: |
| 808 | response_reason = MotifDnDConstants.DROP_SITE_LEAVE; |
| 809 | break; |
| 810 | } |
| 811 | break; |
| 812 | case MotifDnDConstants.OPERATION_CHANGED: |
| 813 | case MotifDnDConstants.DROP_START: |
| 814 | response_reason = reason; |
| 815 | break; |
| 816 | default: |
| 817 | // Unknown reason. Shouldn't get here. |
| 818 | assert false; |
| 819 | } |
| 820 | |
| 821 | XClientMessageEvent msg = new XClientMessageEvent(); |
| 822 | |
| 823 | try { |
| 824 | msg.set_type(XlibWrapper.ClientMessage); |
| 825 | msg.set_window(MotifDnDConstants.Swapper.getInt(data + 12, eventByteOrder)); |
| 826 | msg.set_format(8); |
| 827 | msg.set_message_type(MotifDnDConstants.XA_MOTIF_DRAG_AND_DROP_MESSAGE.getAtom()); |
| 828 | |
| 829 | long responseData = msg.get_data(); |
| 830 | |
| 831 | unsafe.putByte(responseData, (byte)(response_reason | |
| 832 | MotifDnDConstants.MOTIF_MESSAGE_FROM_RECEIVER)); |
| 833 | unsafe.putByte(responseData + 1, MotifDnDConstants.getByteOrderByte()); |
| 834 | |
| 835 | int response_flags = 0; |
| 836 | |
| 837 | if (response_reason != MotifDnDConstants.DROP_SITE_LEAVE) { |
| 838 | short flags = MotifDnDConstants.Swapper.getShort(data + 2, |
| 839 | eventByteOrder); |
| 840 | byte dropSiteStatus = (action == DnDConstants.ACTION_NONE) ? |
| 841 | MotifDnDConstants.MOTIF_INVALID_DROP_SITE : |
| 842 | MotifDnDConstants.MOTIF_VALID_DROP_SITE; |
| 843 | |
| 844 | /* Clear action and drop site status bits. */ |
| 845 | response_flags = flags & |
| 846 | ~MotifDnDConstants.MOTIF_DND_ACTION_MASK & |
| 847 | ~MotifDnDConstants.MOTIF_DND_STATUS_MASK; |
| 848 | /* Fill in new action and drop site status. */ |
| 849 | response_flags |= |
| 850 | MotifDnDConstants.getMotifActionsForJavaActions(action) << |
| 851 | MotifDnDConstants.MOTIF_DND_ACTION_SHIFT; |
| 852 | response_flags |= |
| 853 | dropSiteStatus << MotifDnDConstants.MOTIF_DND_STATUS_SHIFT; |
| 854 | } else { |
| 855 | response_flags = 0; |
| 856 | } |
| 857 | |
| 858 | unsafe.putShort(responseData + 2, (short)response_flags); |
| 859 | |
| 860 | /* Write time stamp. */ |
| 861 | int time = MotifDnDConstants.Swapper.getInt(data + 4, eventByteOrder); |
| 862 | unsafe.putInt(responseData + 4, time); |
| 863 | |
| 864 | /* Write coordinates. */ |
| 865 | if (response_reason != MotifDnDConstants.DROP_SITE_LEAVE) { |
| 866 | short x = MotifDnDConstants.Swapper.getShort(data + 8, |
| 867 | eventByteOrder); |
| 868 | short y = MotifDnDConstants.Swapper.getShort(data + 10, |
| 869 | eventByteOrder); |
| 870 | unsafe.putShort(responseData + 8, x); // x |
| 871 | unsafe.putShort(responseData + 10, y); // y |
| 872 | } else { |
| 873 | unsafe.putShort(responseData + 8, (short)0); // x |
| 874 | unsafe.putShort(responseData + 10, (short)0); // y |
| 875 | } |
| 876 | |
| 877 | XToolkit.awtLock(); |
| 878 | try { |
| 879 | XlibWrapper.XSendEvent(XToolkit.getDisplay(), |
| 880 | msg.get_window(), |
| 881 | false, XlibWrapper.NoEventMask, |
| 882 | msg.pData); |
| 883 | } finally { |
| 884 | XToolkit.awtUnlock(); |
| 885 | } |
| 886 | } finally { |
| 887 | msg.dispose(); |
| 888 | } |
| 889 | |
| 890 | return true; |
| 891 | } |
| 892 | |
| 893 | public Object getData(long ctxt, long format) |
| 894 | throws IllegalArgumentException, IOException { |
| 895 | XClientMessageEvent xclient = new XClientMessageEvent(ctxt); |
| 896 | |
| 897 | if (xclient.get_message_type() != |
| 898 | MotifDnDConstants.XA_MOTIF_DRAG_AND_DROP_MESSAGE.getAtom()) { |
| 899 | throw new IllegalArgumentException(); |
| 900 | } |
| 901 | |
| 902 | long data = xclient.get_data(); |
| 903 | byte reason = (byte)(unsafe.getByte(data) & |
| 904 | MotifDnDConstants.MOTIF_MESSAGE_REASON_MASK); |
| 905 | byte origin = (byte)(unsafe.getByte(data) & |
| 906 | MotifDnDConstants.MOTIF_MESSAGE_SENDER_MASK); |
| 907 | byte eventByteOrder = unsafe.getByte(data + 1); |
| 908 | |
| 909 | if (origin != MotifDnDConstants.MOTIF_MESSAGE_FROM_INITIATOR) { |
| 910 | throw new IOException("Cannot get data: corrupted context"); |
| 911 | } |
| 912 | |
| 913 | long selatom = 0; |
| 914 | |
| 915 | switch (reason) { |
| 916 | case MotifDnDConstants.DRAG_MOTION : |
| 917 | case MotifDnDConstants.OPERATION_CHANGED : |
| 918 | selatom = sourceAtom; |
| 919 | break; |
| 920 | case MotifDnDConstants.DROP_START : |
| 921 | selatom = MotifDnDConstants.Swapper.getInt(data + 12, eventByteOrder); |
| 922 | break; |
| 923 | default: |
| 924 | throw new IOException("Cannot get data: invalid message reason"); |
| 925 | } |
| 926 | |
| 927 | if (selatom == 0) { |
| 928 | throw new IOException("Cannot get data: drag source property atom unavailable"); |
| 929 | } |
| 930 | |
| 931 | long time_stamp = MotifDnDConstants.Swapper.getInt(data + 4, eventByteOrder); |
| 932 | XAtom selectionAtom = XAtom.get(selatom); |
| 933 | |
| 934 | XSelection selection = XSelection.getSelection(selectionAtom); |
| 935 | if (selection == null) { |
| 936 | selection = new XSelection(selectionAtom, null); |
| 937 | } |
| 938 | |
| 939 | return selection.getData(format, time_stamp); |
| 940 | } |
| 941 | |
| 942 | public boolean sendDropDone(long ctxt, boolean success, int dropAction) { |
| 943 | XClientMessageEvent xclient = new XClientMessageEvent(ctxt); |
| 944 | |
| 945 | if (xclient.get_message_type() != |
| 946 | MotifDnDConstants.XA_MOTIF_DRAG_AND_DROP_MESSAGE.getAtom()) { |
| 947 | return false; |
| 948 | } |
| 949 | |
| 950 | long data = xclient.get_data(); |
| 951 | byte reason = (byte)(unsafe.getByte(data) & |
| 952 | MotifDnDConstants.MOTIF_MESSAGE_REASON_MASK); |
| 953 | byte origin = (byte)(unsafe.getByte(data) & |
| 954 | MotifDnDConstants.MOTIF_MESSAGE_SENDER_MASK); |
| 955 | byte eventByteOrder = unsafe.getByte(data + 1); |
| 956 | |
| 957 | if (origin != MotifDnDConstants.MOTIF_MESSAGE_FROM_INITIATOR) { |
| 958 | return false; |
| 959 | } |
| 960 | |
| 961 | if (reason != MotifDnDConstants.DROP_START) { |
| 962 | return false; |
| 963 | } |
| 964 | |
| 965 | long time_stamp = MotifDnDConstants.Swapper.getInt(data + 4, eventByteOrder); |
| 966 | long sel_atom = MotifDnDConstants.Swapper.getInt(data + 12, eventByteOrder); |
| 967 | |
| 968 | long status_atom = 0; |
| 969 | |
| 970 | if (success) { |
| 971 | status_atom = MotifDnDConstants.XA_XmTRANSFER_SUCCESS.getAtom(); |
| 972 | } else { |
| 973 | status_atom = MotifDnDConstants.XA_XmTRANSFER_FAILURE.getAtom(); |
| 974 | } |
| 975 | |
| 976 | XToolkit.awtLock(); |
| 977 | try { |
| 978 | XlibWrapper.XConvertSelection(XToolkit.getDisplay(), |
| 979 | sel_atom, |
| 980 | status_atom, |
| 981 | MotifDnDConstants.XA_MOTIF_ATOM_0.getAtom(), |
| 982 | XWindow.getXAWTRootWindow().getWindow(), |
| 983 | time_stamp); |
| 984 | |
| 985 | /* |
| 986 | * Flush the buffer to guarantee that the drop completion event is sent |
| 987 | * to the source before the method returns. |
| 988 | */ |
| 989 | XlibWrapper.XFlush(XToolkit.getDisplay()); |
| 990 | } finally { |
| 991 | XToolkit.awtUnlock(); |
| 992 | } |
| 993 | |
| 994 | /* Trick to prevent cleanup() from posting dragExit */ |
| 995 | targetXWindow = null; |
| 996 | |
| 997 | /* Cannot do cleanup before the drop finishes as we may need |
| 998 | source protocol version to send drop finished message. */ |
| 999 | cleanup(); |
| 1000 | return true; |
| 1001 | } |
| 1002 | |
| 1003 | public final long getSourceWindow() { |
| 1004 | return sourceWindow; |
| 1005 | } |
| 1006 | |
| 1007 | /** |
| 1008 | * Reset the state of the object. |
| 1009 | */ |
| 1010 | public void cleanup() { |
| 1011 | // Clear the reference to this protocol. |
| 1012 | XDropTargetEventProcessor.reset(); |
| 1013 | |
| 1014 | if (targetXWindow != null) { |
| 1015 | notifyProtocolListener(targetXWindow, 0, 0, |
| 1016 | DnDConstants.ACTION_NONE, sourceActions, |
| 1017 | null, MouseEvent.MOUSE_EXITED); |
| 1018 | } |
| 1019 | |
| 1020 | if (sourceWindow != 0) { |
| 1021 | XToolkit.awtLock(); |
| 1022 | try { |
| 1023 | XToolkit.WITH_XERROR_HANDLER(XToolkit.IgnoreBadWindowHandler); |
| 1024 | XlibWrapper.XSelectInput(XToolkit.getDisplay(), sourceWindow, |
| 1025 | sourceWindowMask); |
| 1026 | XToolkit.RESTORE_XERROR_HANDLER(); |
| 1027 | } finally { |
| 1028 | XToolkit.awtUnlock(); |
| 1029 | } |
| 1030 | } |
| 1031 | |
| 1032 | sourceWindow = 0; |
| 1033 | sourceWindowMask = 0; |
| 1034 | sourceProtocolVersion = 0; |
| 1035 | sourceActions = DnDConstants.ACTION_NONE; |
| 1036 | sourceFormats = null; |
| 1037 | sourceAtom = 0; |
| 1038 | userAction = DnDConstants.ACTION_NONE; |
| 1039 | sourceX = 0; |
| 1040 | sourceY = 0; |
| 1041 | targetXWindow = null; |
| 1042 | topLevelLeavePostponed = false; |
| 1043 | } |
| 1044 | |
| 1045 | public boolean isDragOverComponent() { |
| 1046 | return targetXWindow != null; |
| 1047 | } |
| 1048 | |
| 1049 | private void notifyProtocolListener(XWindow xwindow, int x, int y, |
| 1050 | int dropAction, int actions, |
| 1051 | XClientMessageEvent xclient, |
| 1052 | int eventID) { |
| 1053 | long nativeCtxt = 0; |
| 1054 | |
| 1055 | // Make a copy of the passed XClientMessageEvent structure, since |
| 1056 | // the original structure can be freed before this |
| 1057 | // SunDropTargetEvent is dispatched. |
| 1058 | if (xclient != null) { |
| 1059 | int size = new XClientMessageEvent(nativeCtxt).getSize(); |
| 1060 | |
| 1061 | nativeCtxt = unsafe.allocateMemory(size + 4 * Native.getLongSize()); |
| 1062 | |
| 1063 | unsafe.copyMemory(xclient.pData, nativeCtxt, size); |
| 1064 | } |
| 1065 | |
| 1066 | getProtocolListener().handleDropTargetNotification(xwindow, x, y, |
| 1067 | dropAction, |
| 1068 | actions, |
| 1069 | sourceFormats, |
| 1070 | nativeCtxt, |
| 1071 | eventID); |
| 1072 | } |
| 1073 | } |