1 /* 2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle 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 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. 24 */ 25 26 //#define DND_DEBUG TRUE 27 28 #import "java_awt_dnd_DnDConstants.h" 29 30 #import <Cocoa/Cocoa.h> 31 #import <JavaNativeFoundation/JavaNativeFoundation.h> 32 33 #import "AWTEvent.h" 34 #import "AWTView.h" 35 #import "CDataTransferer.h" 36 #import "CDropTarget.h" 37 #import "CDragSource.h" 38 #import "DnDUtilities.h" 39 #import "ThreadUtilities.h" 40 41 42 // When sIsJavaDragging is true Java drag gesture has been recognized and a drag is/has been initialized. 43 // We must stop posting MouseEvent.MOUSE_DRAGGED events for the duration of the drag or all hell will break 44 // loose in shared code - tracking state going haywire. 45 static BOOL sIsJavaDragging; 46 47 48 @interface NSEvent(AWTAdditions) 49 50 + (void)javaDraggingBegin; 51 + (void)javaDraggingEnd; 52 53 @end 54 55 56 @implementation NSEvent(AWTAdditions) 57 58 59 + (void)javaDraggingBegin 60 { 61 sIsJavaDragging = YES; 62 } 63 64 + (void)javaDraggingEnd 65 { 66 // sIsJavaDragging is reset on mouseDown as well. 67 sIsJavaDragging = NO; 68 } 69 @end 70 71 JNF_CLASS_CACHE(DataTransfererClass, "sun/awt/datatransfer/DataTransferer"); 72 JNF_CLASS_CACHE(CDragSourceContextPeerClass, "sun/lwawt/macosx/CDragSourceContextPeer"); 73 JNF_CLASS_CACHE(CImageClass, "sun/lwawt/macosx/CImage"); 74 75 static NSDragOperation sDragOperation; 76 static NSPoint sDraggingLocation; 77 78 static CDragSource* sCurrentDragSource; 79 static BOOL sNeedsEnter; 80 81 @implementation CDragSource 82 83 + (CDragSource *) currentDragSource { 84 return sCurrentDragSource; 85 } 86 87 - (id) init:(jobject)jDragSourceContextPeer 88 component:(jobject)jComponent 89 control:(id)control 90 transferable:(jobject)jTransferable 91 triggerEvent:(jobject)jTrigger 92 dragPosX:(jint)dragPosX 93 dragPosY:(jint)dragPosY 94 modifiers:(jint)extModifiers 95 clickCount:(jint)clickCount 96 timeStamp:(jlong)timeStamp 97 dragImage:(jobject)jDragImage 98 dragImageOffsetX:(jint)jDragImageOffsetX 99 dragImageOffsetY:(jint)jDragImageOffsetY 100 sourceActions:(jint)jSourceActions 101 formats:(jlongArray)jFormats 102 formatMap:(jobject)jFormatMap 103 { 104 self = [super init]; 105 DLog2(@"[CDragSource init]: %@\n", self); 106 107 fView = nil; 108 fComponent = nil; 109 110 // Construct the object if we have a valid model for it: 111 if (control != nil) { 112 JNIEnv *env = [ThreadUtilities getJNIEnv]; 113 fComponent = JNFNewGlobalRef(env, jComponent); 114 fDragSourceContextPeer = JNFNewGlobalRef(env, jDragSourceContextPeer); 115 116 fTransferable = JNFNewGlobalRef(env, jTransferable); 117 fTriggerEvent = JNFNewGlobalRef(env, jTrigger); 118 119 if (jDragImage) { 120 JNF_MEMBER_CACHE(nsImagePtr, CImageClass, "ptr", "J"); 121 jlong imgPtr = JNFGetLongField(env, jDragImage, nsImagePtr); 122 fDragImage = (NSImage*) jlong_to_ptr(imgPtr); // Double-casting prevents compiler 'd$|// 123 124 [fDragImage retain]; 125 } 126 127 fDragImageOffset = NSMakePoint(jDragImageOffsetX, jDragImageOffsetY); 128 129 fSourceActions = jSourceActions; 130 fFormats = JNFNewGlobalRef(env, jFormats); 131 fFormatMap = JNFNewGlobalRef(env, jFormatMap); 132 133 fTriggerEventTimeStamp = timeStamp; 134 fDragPos = NSMakePoint(dragPosX, dragPosY); 135 fClickCount = clickCount; 136 fModifiers = extModifiers; 137 138 // Set this object as a dragging source: 139 140 fView = [(AWTView *) control retain]; 141 [fView setDragSource:self]; 142 143 // Let AWTEvent know Java drag is getting underway: 144 [NSEvent javaDraggingBegin]; 145 } 146 147 else { 148 [self release]; 149 self = nil; 150 } 151 152 return self; 153 } 154 155 - (void)removeFromView:(JNIEnv *)env 156 { 157 DLog2(@"[CDragSource removeFromView]: %@\n", self); 158 159 // Remove this dragging source from the view: 160 [((AWTView *) fView) setDragSource:nil]; 161 162 // Clean up JNI refs 163 if (fComponent != NULL) { 164 JNFDeleteGlobalRef(env, fComponent); 165 fComponent = NULL; 166 } 167 168 if (fDragSourceContextPeer != NULL) { 169 JNFDeleteGlobalRef(env, fDragSourceContextPeer); 170 fDragSourceContextPeer = NULL; 171 } 172 173 if (fTransferable != NULL) { 174 JNFDeleteGlobalRef(env, fTransferable); 175 fTransferable = NULL; 176 } 177 178 if (fTriggerEvent != NULL) { 179 JNFDeleteGlobalRef(env, fTriggerEvent); 180 fTriggerEvent = NULL; 181 } 182 183 if (fFormats != NULL) { 184 JNFDeleteGlobalRef(env, fFormats); 185 fFormats = NULL; 186 } 187 188 if (fFormatMap != NULL) { 189 JNFDeleteGlobalRef(env, fFormatMap); 190 fFormatMap = NULL; 191 } 192 193 CFRelease(self); // GC 194 } 195 196 - (void)dealloc 197 { 198 DLog2(@"[CDragSource dealloc]: %@\n", self); 199 200 // Delete or release local data: 201 [fView release]; 202 fView = nil; 203 204 [fDragImage release]; 205 fDragImage = nil; 206 207 [super dealloc]; 208 } 209 //- (void)finalize { [super finalize]; } 210 211 212 // Appropriated from Windows' awt_DataTransferer.cpp: 213 // 214 // * NOTE: This returns a JNI Local Ref. Any code that calls must call DeleteLocalRef with the return value. 215 // 216 - (jobject)dataTransferer:(JNIEnv*)env 217 { 218 JNF_STATIC_MEMBER_CACHE(getInstanceMethod, DataTransfererClass, "getInstance", "()Lsun/awt/datatransfer/DataTransferer;"); 219 return JNFCallStaticObjectMethod(env, getInstanceMethod); 220 } 221 222 // Appropriated from Windows' awt_DataTransferer.cpp: 223 // 224 // * NOTE: This returns a JNI Local Ref. Any code that calls must call DeleteLocalRef with the return value. 225 // 226 - (jbyteArray)convertData:(jlong)format 227 { 228 JNIEnv* env = [ThreadUtilities getJNIEnv]; 229 jobject transferer = [self dataTransferer:env]; 230 jbyteArray data = nil; 231 232 if (transferer != NULL) { 233 JNF_MEMBER_CACHE(convertDataMethod, DataTransfererClass, "convertData", "(Ljava/lang/Object;Ljava/awt/datatransfer/Transferable;JLjava/util/Map;Z)[B"); 234 data = JNFCallObjectMethod(env, transferer, convertDataMethod, fComponent, fTransferable, format, fFormatMap, (jboolean) TRUE); 235 } 236 237 return data; 238 } 239 240 241 // Encodes a byte array of zero-terminated filenames into an NSArray of NSStrings representing them. 242 // Borrowed and adapted from awt_DataTransferer.c, convertFileType(). 243 - (id)getFileList:(jbyte *)jbytes dataLength:(jsize)jbytesLength 244 { 245 jsize strings = 0; 246 jsize i; 247 248 // Get number of filenames while making sure to skip over empty strings. 249 for (i = 1; i < jbytesLength; i++) { 250 if (jbytes[i] == '\0' && jbytes[i - 1] != '\0') 251 strings++; 252 } 253 254 // Create the file list to return: 255 NSMutableArray* fileList = [NSMutableArray arrayWithCapacity:strings]; 256 257 for (i = 0; i < jbytesLength; i++) { 258 char* start = (char *) &jbytes[i]; 259 260 // Skip over empty strings: 261 if (start[0] == '\0') { 262 continue; 263 } 264 265 // Update the position marker: 266 i += strlen(start); 267 268 // Add this filename to the file list: 269 NSMutableString* fileName = [NSMutableString stringWithUTF8String:start]; 270 // Decompose the filename 271 CFStringNormalize((CFMutableStringRef)fileName, kCFStringNormalizationFormD); 272 [fileList addObject:fileName]; 273 } 274 275 // 03-01-09 Note: keep this around for debugging. 276 // return [NSArray arrayWithObjects:@"/tmp/foo1", @"/tmp/foo2", nil]; 277 278 return ([fileList count] > 0 ? fileList : nil); 279 } 280 281 282 // Set up the pasteboard for dragging: 283 - (BOOL)declareTypesToPasteboard:(NSPasteboard *)pb withEnv:(JNIEnv *) env { 284 // 9-20-02 Note: leave this here for debugging: 285 //[pb declareTypes: [NSArray arrayWithObject: NSStringPboardType] owner: self]; 286 //return TRUE; 287 288 // Get byte array elements: 289 jboolean isCopy; 290 jlong* jformats = (*env)->GetLongArrayElements(env, fFormats, &isCopy); 291 if (jformats == nil) 292 return FALSE; 293 294 // Allocate storage arrays for dragging types to register with the pasteboard: 295 jsize formatsLength = (*env)->GetArrayLength(env, fFormats); 296 NSMutableArray* pbTypes = [[NSMutableArray alloc] initWithCapacity:formatsLength]; 297 298 // And assume there are no NS-type data: [Radar 3065621] 299 // This is to be able to drop transferables containing only a serialized object flavor, e.g.: 300 // "JAVA_DATAFLAVOR:application/x-java-serialized-object; class=java.awt.Label". 301 BOOL hasNSTypeData = false; 302 303 // Collect all supported types in a pasteboard format into the storage arrays: 304 jsize i; 305 for (i = 0; i < formatsLength; i++) { 306 jlong jformat = jformats[i]; 307 308 if (jformat >= 0) { 309 NSString* type = formatForIndex(jformat); 310 311 // Add element type to the storage array. 312 if (type != nil) { 313 if ([type hasPrefix:@"JAVA_DATAFLAVOR:application/x-java-jvm-local-objectref;"] == false) { 314 [pbTypes addObject:type]; 315 316 // This is a good approximation if not perfect. A conclusive search would 317 // have to be done matching all defined strings in AppKit's commonStrings.h. 318 if ([type hasPrefix:@"NS"] || [type hasPrefix:@"NeXT"]) 319 hasNSTypeData = true; 320 } 321 } 322 } 323 } 324 325 // 1-16-03 Note: [Radar 3065621] 326 // When TransferHandler is used with Swing components it puts only a type like this on the pasteboard: 327 // "JAVA_DATAFLAVOR:application/x-java-jvm-local-objectref; class=java.lang.String" 328 // And there's similar type for serialized object only transferables. 329 // Since our drop targets aren't trained for arbitrary data types yet we need to fake an empty string 330 // which will cause drop target handlers to fire. 331 // KCH - 3550405 If the drag is between Swing components, formatsLength == 0, so expand the check. 332 // Also, use a custom format rather than NSString, since that will prevent random views from accepting the drag 333 if (hasNSTypeData == false && formatsLength >= 0) { 334 [pbTypes addObject:[DnDUtilities javaPboardType]]; 335 } 336 337 (*env)->ReleaseLongArrayElements(env, fFormats, jformats, JNI_ABORT); 338 339 // Declare pasteboard types. If the types array is empty we still want to declare them 340 // as otherwise an old set of types/data would remain on the pasteboard. 341 NSUInteger typesCount = [pbTypes count]; 342 [pb declareTypes:pbTypes owner: self]; 343 344 // KCH - Lame conversion bug between Cocoa and Carbon drag types 345 // If I provide the filenames _right now_, NSFilenamesPboardType is properly converted to CoreDrag flavors 346 // If I try to wait until pasteboard:provideDataForType:, the conversion won't happen 347 // and pasteboard:provideDataForType: won't even get called! (unless I go over a Cocoa app) 348 if ([pbTypes containsObject:NSFilenamesPboardType]) { 349 [self pasteboard:pb provideDataForType:NSFilenamesPboardType]; 350 } 351 352 [pbTypes release]; 353 354 return typesCount > 0 ? TRUE : FALSE; 355 } 356 357 // This is an NSPasteboard callback. In declareTypesToPasteboard:withEnv:, we only declared the types 358 // When the AppKit DnD system actually needs the data, this method will be invoked. 359 // Note that if the transfer is handled entirely from Swing (as in a local-vm drag), this method may never be called. 360 - (void)pasteboard:(NSPasteboard *)pb provideDataForType:(NSString *)type { 361 AWT_ASSERT_APPKIT_THREAD; 362 363 // 9-20-02 Note: leave this here for debugging: 364 //[pb setString: @"Hello, World!" forType: NSStringPboardType]; 365 // return; 366 367 // Set up Java environment: 368 JNIEnv* env = [ThreadUtilities getJNIEnv]; 369 370 id pbData = nil; 371 372 // Collect data in a pasteboard format: 373 jlong jformat = indexForFormat(type); 374 if (jformat >= 0) { 375 // Convert DataTransfer data to a Java byte array: 376 // Note that this will eventually call getTransferData() 377 jbyteArray jdata = [self convertData:jformat]; 378 379 if (jdata != nil) { 380 jboolean isCopy; 381 jsize jdataLength = (*env)->GetArrayLength(env, jdata); 382 jbyte* jbytedata = (*env)->GetByteArrayElements(env, jdata, &isCopy); 383 384 if (jdataLength > 0 && jbytedata != nil) { 385 // Get element data to the storage array. For NSFilenamesPboardType type we use 386 // an NSArray-type data - NSData-type data would cause a crash. 387 if (type != nil) { 388 pbData = ([type isEqualTo:NSFilenamesPboardType]) ? 389 [self getFileList:jbytedata dataLength:jdataLength] : 390 [NSData dataWithBytes:jbytedata length:jdataLength]; 391 } 392 } 393 394 (*env)->ReleaseByteArrayElements(env, jdata, jbytedata, JNI_ABORT); 395 396 (*env)->DeleteLocalRef(env, jdata); 397 } 398 } 399 400 // If we are the custom type that matches local-vm drags, set an empty NSData 401 if ( (pbData == nil) && ([type isEqualTo:[DnDUtilities javaPboardType]]) ) { 402 pbData = [NSData dataWithBytes:"" length:1]; 403 } 404 405 // Add pasteboard data for the type: 406 // Remember, NSFilenamesPboardType's data is NSArray (property list), not NSData! 407 // We must use proper pb accessor depending on the data type. 408 if ([pbData isKindOfClass:[NSArray class]]) 409 [pb setPropertyList:pbData forType:type]; 410 else 411 [pb setData:pbData forType:type]; 412 } 413 414 415 - (void)validateDragImage 416 { 417 // Make a small blank image if we don't have a drag image: 418 if (fDragImage == nil) { 419 // 9-30-02 Note: keep this around for debugging: 420 fDragImage = [[NSImage alloc] initWithSize:NSMakeSize(21, 21)]; 421 NSSize imageSize = [fDragImage size]; 422 423 NSBitmapImageRep *imageRep = [[NSBitmapImageRep alloc] initWithBitmapDataPlanes:NULL 424 pixelsWide:imageSize.width pixelsHigh:imageSize.height bitsPerSample:8 samplesPerPixel:4 425 hasAlpha:YES isPlanar:NO colorSpaceName:NSCalibratedRGBColorSpace bytesPerRow:0 bitsPerPixel:32]; 426 427 [fDragImage addRepresentation:imageRep]; 428 fDragImageOffset = NSMakePoint(0, 0); 429 430 [imageRep release]; 431 } 432 } 433 434 - (NSEvent*)nsDragEvent:(BOOL)isDrag 435 { 436 // Get NSView for the drag source: 437 NSWindow* window = [fView window]; 438 439 NSInteger windowNumber = [window windowNumber]; 440 NSGraphicsContext* graphicsContext = [NSGraphicsContext graphicsContextWithWindow:window]; 441 442 // Convert mouse coordinates to NS: 443 NSPoint eventLocation = [fView convertPoint:NSMakePoint(fDragPos.x, fDragPos.y) toView:nil]; 444 eventLocation.y = [[fView window] frame].size.height - eventLocation.y; 445 446 // Convert fTriggerEventTimeStamp to NS - AWTEvent.h defines UTC(nsEvent) as ((jlong)[event timestamp] * 1000): 447 NSTimeInterval timeStamp = fTriggerEventTimeStamp / 1000; 448 449 // Convert fModifiers (extModifiers) to NS: 450 NSEventType mouseButtons = 0; 451 float pressure = 0.0; 452 if (isDrag) { 453 mouseButtons = (NSEventType) [DnDUtilities mapJavaExtModifiersToNSMouseDownButtons:fModifiers]; 454 pressure = 1.0; 455 } else { 456 mouseButtons = (NSEventType) [DnDUtilities mapJavaExtModifiersToNSMouseUpButtons:fModifiers]; 457 } 458 459 // Convert fModifiers (extModifiers) to NS: 460 NSUInteger modifiers = JavaModifiersToNsKeyModifiers(fModifiers, TRUE); 461 462 // Just a dummy value ... 463 NSInteger eventNumber = 0; 464 465 // Make a native autoreleased dragging event: 466 NSEvent* dragEvent = [NSEvent mouseEventWithType:mouseButtons location:eventLocation 467 modifierFlags:modifiers timestamp:timeStamp windowNumber:windowNumber context:graphicsContext 468 eventNumber:eventNumber clickCount:fClickCount pressure:pressure]; 469 470 return dragEvent; 471 } 472 473 - (void)doDrag 474 { 475 AWT_ASSERT_APPKIT_THREAD; 476 477 DLog2(@"[CDragSource doDrag]: %@\n", self); 478 479 // Set up Java environment: 480 JNIEnv *env = [ThreadUtilities getJNIEnv]; 481 482 // Set up the pasteboard: 483 NSPasteboard *pb = [NSPasteboard pasteboardWithName: NSDragPboard]; 484 [self declareTypesToPasteboard:pb withEnv:env]; 485 486 // Make a native autoreleased NS dragging event: 487 NSEvent *dragEvent = [self nsDragEvent:YES]; 488 489 // Get NSView for the drag source: 490 NSView *view = fView; 491 492 // Make sure we have a valid drag image: 493 [self validateDragImage]; 494 NSImage* dragImage = fDragImage; 495 496 // Get drag origin and offset: 497 NSPoint dragOrigin = [dragEvent locationInWindow]; 498 dragOrigin.x += fDragImageOffset.x; 499 dragOrigin.y -= fDragImageOffset.y + [dragImage size].height; 500 501 // Drag offset values don't seem to matter: 502 NSSize dragOffset = NSMakeSize(0, 0); 503 504 // These variables should be set based on the transferable: 505 BOOL isFileDrag = FALSE; 506 BOOL fileDragPromises = FALSE; 507 508 DLog(@"[CDragSource drag]: calling dragImage/File:"); 509 DLog3(@" - drag origin: %f, %f", fDragPos.x, fDragPos.y); 510 DLog5(@" - drag image: %f, %f (%f x %f)", fDragImageOffset.x, fDragImageOffset.y, [dragImage size].width, [dragImage size].height); 511 DLog3(@" - event point (window) %f, %f", [dragEvent locationInWindow].x, [dragEvent locationInWindow].y); 512 DLog3(@" - drag point (view) %f, %f", dragOrigin.x, dragOrigin.y); 513 // Set up the fDragKeyModifier, so we know if the operation has changed 514 // Set up the fDragMouseModifier, so we can |= it later (since CoreDrag doesn't tell us mouse states during a drag) 515 fDragKeyModifiers = [DnDUtilities extractJavaExtKeyModifiersFromJavaExtModifiers:fModifiers]; 516 fDragMouseModifiers = [DnDUtilities extractJavaExtMouseModifiersFromJavaExtModifiers:fModifiers]; 517 518 // Set the current DragSource 519 sCurrentDragSource = self; 520 sNeedsEnter = YES; 521 522 @try { 523 // Data dragging: 524 if (isFileDrag == FALSE) { 525 [view dragImage:dragImage at:dragOrigin offset:dragOffset event:dragEvent pasteboard:pb source:view slideBack:YES]; 526 } else if (fileDragPromises == FALSE) { 527 // File dragging: 528 NSLog(@"[CDragSource drag]: file dragging is unsupported."); 529 NSString* fileName = nil; // This should be set based on the transferable. 530 NSRect fileLocationRect = NSMakeRect(0, 0, 0, 0); // This should be set based on the filename. 531 532 BOOL success = [view dragFile:fileName fromRect:fileLocationRect slideBack:YES event:dragEvent]; 533 if (success == TRUE) { // One would erase dragged file if this was a move operation. 534 } 535 } else { 536 // Promised file dragging: 537 NSLog(@"[CDragSource drag]: file dragging promises are unsupported."); 538 NSArray* fileTypesArray = nil; // This should be set based on the transferable. 539 NSRect fileLocationRect = NSMakeRect(0, 0, 0, 0); // This should be set based on all filenames. 540 541 BOOL success = [view dragPromisedFilesOfTypes:fileTypesArray fromRect:fileLocationRect source:view slideBack:YES event:dragEvent]; 542 if (success == TRUE) { // One would write out the promised files here. 543 } 544 } 545 546 NSPoint point = [self mapNSScreenPointToJavaWithOffset:sDraggingLocation]; 547 548 // Convert drag operation to Java: 549 jint dragOp = [DnDUtilities mapNSDragOperationToJava:sDragOperation]; 550 551 // Drag success must acount for DragOperationNone: 552 jboolean success = (dragOp != java_awt_dnd_DnDConstants_ACTION_NONE); 553 554 // We have a problem here... we don't send DragSource dragEnter/Exit messages outside of our own process 555 // because we don't get anything from AppKit/CoreDrag 556 // This means that if you drag outside of the app and drop, even if it's valid, a dragDropFinished is posted without dragEnter 557 // I'm worried that this might confuse Java, so we're going to send a "bogus" dragEnter if necessary (only if the drag succeeded) 558 if (success && sNeedsEnter) { 559 [self postDragEnter]; 560 } 561 562 // DragSourceContextPeer.dragDropFinished() should be called even if there was an error: 563 JNF_MEMBER_CACHE(dragDropFinishedMethod, CDragSourceContextPeerClass, "dragDropFinished", "(ZIII)V"); 564 DLog3(@" -> posting dragDropFinished, point %f, %f", point.x, point.y); 565 JNFCallVoidMethod(env, fDragSourceContextPeer, dragDropFinishedMethod, success, dragOp, (jint) point.x, (jint) point.y); // AWT_THREADING Safe (event) 566 JNF_MEMBER_CACHE(resetHoveringMethod, CDragSourceContextPeerClass, "resetHovering", "()V"); 567 JNFCallVoidMethod(env, fDragSourceContextPeer, resetHoveringMethod); // Hust reset static variable 568 } @finally { 569 // Clear the current DragSource 570 sCurrentDragSource = nil; 571 sNeedsEnter = NO; 572 } 573 574 // We have to do this, otherwise AppKit doesn't know we're finished dragging. Yup, it's that bad. 575 if ([[[NSRunLoop currentRunLoop] currentMode] isEqualTo:NSEventTrackingRunLoopMode]) { 576 [NSApp postEvent:[self nsDragEvent:NO] atStart:YES]; 577 } 578 579 DLog2(@"[CDragSource doDrag] end: %@\n", self); 580 } 581 582 - (void)drag 583 { 584 AWT_ASSERT_NOT_APPKIT_THREAD; 585 586 [self performSelectorOnMainThread:@selector(doDrag) withObject:nil waitUntilDone:YES]; // AWT_THREADING Safe (called from unique asynchronous thread) 587 } 588 589 /******************************** BEGIN NSDraggingSource Interface ********************************/ 590 591 - (void)draggingOperationChanged:(NSDragOperation)dragOp { 592 //DLog2(@"[CDragSource draggingOperationChanged]: %@\n", self); 593 594 JNIEnv* env = [ThreadUtilities getJNIEnv]; 595 596 jint targetActions = fSourceActions; 597 if ([CDropTarget currentDropTarget]) targetActions = [[CDropTarget currentDropTarget] currentJavaActions]; 598 599 NSPoint point = [self mapNSScreenPointToJavaWithOffset:sDraggingLocation]; 600 DLog3(@" -> posting operationChanged, point %f, %f", point.x, point.y); 601 jint modifiedModifiers = fDragKeyModifiers | fDragMouseModifiers | [DnDUtilities javaKeyModifiersForNSDragOperation:dragOp]; 602 603 JNF_MEMBER_CACHE(operationChangedMethod, CDragSourceContextPeerClass, "operationChanged", "(IIII)V"); 604 JNFCallVoidMethod(env, fDragSourceContextPeer, operationChangedMethod, targetActions, modifiedModifiers, (jint) point.x, (jint) point.y); // AWT_THREADING Safe (event) 605 } 606 607 - (NSDragOperation)draggingSourceOperationMaskForLocal:(BOOL)localDrag { 608 //DLog2(@"[CDragSource draggingSourceOperationMaskForLocal]: %@\n", self); 609 return [DnDUtilities mapJavaDragOperationToNS:fSourceActions]; 610 } 611 612 /* 9-16-02 Note: we don't support promises yet. 613 - (NSArray *)namesOfPromisedFilesDroppedAtDestination:(NSURL *)dropDestination { 614 }*/ 615 616 - (void)draggedImage:(NSImage *)image beganAt:(NSPoint)screenPoint { 617 DLog4(@"[CDragSource draggedImage beganAt]: (%f, %f) %@\n", screenPoint.x, screenPoint.y, self); 618 619 // Initialize static variables: 620 sDragOperation = NSDragOperationNone; 621 sDraggingLocation = screenPoint; 622 } 623 624 - (void)draggedImage:(NSImage *)image endedAt:(NSPoint)screenPoint operation:(NSDragOperation)operation { 625 DLog4(@"[CDragSource draggedImage endedAt:]: (%f, %f) %@\n", screenPoint.x, screenPoint.y, self); 626 627 sDraggingLocation = screenPoint; 628 sDragOperation = operation; 629 } 630 631 - (void)draggedImage:(NSImage *)image movedTo:(NSPoint)screenPoint { 632 //DLog4(@"[CDragSource draggedImage moved]: (%d, %d) %@\n", (int) screenPoint.x, (int) screenPoint.y, self); 633 JNIEnv* env = [ThreadUtilities getJNIEnv]; 634 635 JNF_COCOA_ENTER(env); 636 // There are two things we would be interested in: 637 // a) mouse pointer has moved 638 // b) drag actions (key modifiers) have changed 639 640 BOOL notifyJava = FALSE; 641 642 // a) mouse pointer has moved: 643 if (NSEqualPoints(screenPoint, sDraggingLocation) == FALSE) { 644 //DLog2(@"[CDragSource draggedImage:movedTo]: mouse moved, %@\n", self); 645 notifyJava = TRUE; 646 } 647 648 // b) drag actions (key modifiers) have changed: 649 jint modifiers = NsKeyModifiersToJavaModifiers([NSEvent modifierFlags], YES); 650 if (fDragKeyModifiers != modifiers) { 651 NSDragOperation currentOp = [DnDUtilities nsDragOperationForModifiers:[NSEvent modifierFlags]]; 652 NSDragOperation allowedOp = [DnDUtilities mapJavaDragOperationToNS:fSourceActions] & currentOp; 653 654 fDragKeyModifiers = modifiers; 655 656 if (sDragOperation != allowedOp) { 657 sDragOperation = allowedOp; 658 [self draggingOperationChanged:allowedOp]; 659 } 660 } 661 662 // Should we notify Java things have changed? 663 if (notifyJava) { 664 sDraggingLocation = screenPoint; 665 666 NSPoint point = [self mapNSScreenPointToJavaWithOffset:screenPoint]; 667 668 jint targetActions = fSourceActions; 669 if ([CDropTarget currentDropTarget]) targetActions = [[CDropTarget currentDropTarget] currentJavaActions]; 670 671 // Motion: dragMotion, dragMouseMoved 672 DLog4(@"[CDragSource draggedImage moved]: (%f, %f) %@\n", screenPoint.x, screenPoint.y, self); 673 674 DLog3(@" -> posting dragMotion, point %f, %f", point.x, point.y); 675 JNF_MEMBER_CACHE(dragMotionMethod, CDragSourceContextPeerClass, "dragMotion", "(IIII)V"); 676 JNFCallVoidMethod(env, fDragSourceContextPeer, dragMotionMethod, targetActions, (jint) fModifiers, (jint) point.x, (jint) point.y); // AWT_THREADING Safe (event) 677 678 DLog3(@" -> posting dragMouseMoved, point %f, %f", point.x, point.y); 679 JNF_MEMBER_CACHE(dragMouseMovedMethod, CDragSourceContextPeerClass, "dragMouseMoved", "(IIII)V"); 680 JNFCallVoidMethod(env, fDragSourceContextPeer, dragMouseMovedMethod, targetActions, (jint) fModifiers, (jint) point.x, (jint) point.y); // AWT_THREADING Safe (event) 681 } 682 JNF_COCOA_EXIT(env); 683 } 684 685 - (BOOL)ignoreModifierKeysWhileDragging { 686 //DLog2(@"[CDragSource ignoreModifierKeysWhileDragging]: %@\n", self); 687 return NO; 688 } 689 690 /******************************** END NSDraggingSource Interface ********************************/ 691 692 693 // postDragEnter and postDragExit are called from CDropTarget when possible and appropriate 694 // Currently only possible if source and target are in the same process 695 - (void) postDragEnter { 696 JNIEnv *env = [ThreadUtilities getJNIEnv]; 697 sNeedsEnter = NO; 698 699 jint targetActions = fSourceActions; 700 if ([CDropTarget currentDropTarget]) targetActions = [[CDropTarget currentDropTarget] currentJavaActions]; 701 702 NSPoint point = [self mapNSScreenPointToJavaWithOffset:sDraggingLocation]; 703 DLog3(@" -> posting dragEnter, point %f, %f", point.x, point.y); 704 JNF_MEMBER_CACHE(dragEnterMethod, CDragSourceContextPeerClass, "dragEnter", "(IIII)V"); 705 JNFCallVoidMethod(env, fDragSourceContextPeer, dragEnterMethod, targetActions, (jint) fModifiers, (jint) point.x, (jint) point.y); // AWT_THREADING Safe (event) 706 } 707 708 - (void) postDragExit { 709 JNIEnv *env = [ThreadUtilities getJNIEnv]; 710 sNeedsEnter = YES; 711 712 NSPoint point = [self mapNSScreenPointToJavaWithOffset:sDraggingLocation]; 713 DLog3(@" -> posting dragExit, point %f, %f", point.x, point.y); 714 JNF_MEMBER_CACHE(dragExitMethod, CDragSourceContextPeerClass, "dragExit", "(II)V"); 715 JNFCallVoidMethod(env, fDragSourceContextPeer, dragExitMethod, (jint) point.x, (jint) point.y); // AWT_THREADING Safe (event) 716 } 717 718 719 // Java assumes that the origin is the top-left corner of the screen. 720 // Cocoa assumes that the origin is the bottom-left corner of the screen. 721 // Adjust the y coordinate to account for this. 722 // NOTE: Also need to take into account the 0 screen relative screen coords. 723 // This is because all screen coords in Cocoa are relative to the 0 screen. 724 // Also see +[CWindow convertAWTToCocoaScreenRect] 725 // NSScreen-to-JavaScreen mapping: 726 - (NSPoint) mapNSScreenPointToJavaWithOffset:(NSPoint)screenPoint { 727 NSRect mainR = [[[NSScreen screens] objectAtIndex:0] frame]; 728 NSPoint point = NSMakePoint(screenPoint.x, mainR.size.height - (screenPoint.y)); 729 730 // Adjust the point with the drag image offset to get the real mouse hotspot: 731 // The point should remain in screen coordinates (as per DragSourceEvent.getLocation() documentation) 732 point.x -= fDragImageOffset.x; 733 point.y -= ([fDragImage size].height + fDragImageOffset.y); 734 735 return point; 736 } 737 738 @end