| /* |
| * Copyright (c) 2011, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| //#define DND_DEBUG TRUE |
| |
| #import "java_awt_dnd_DnDConstants.h" |
| |
| #import <Cocoa/Cocoa.h> |
| #import <JavaNativeFoundation/JavaNativeFoundation.h> |
| |
| #import "AWTEvent.h" |
| #import "AWTView.h" |
| #import "CDataTransferer.h" |
| #import "CDropTarget.h" |
| #import "CDragSource.h" |
| #import "DnDUtilities.h" |
| #import "ThreadUtilities.h" |
| |
| |
| // When sIsJavaDragging is true Java drag gesture has been recognized and a drag is/has been initialized. |
| // We must stop posting MouseEvent.MOUSE_DRAGGED events for the duration of the drag or all hell will break |
| // loose in shared code - tracking state going haywire. |
| static BOOL sIsJavaDragging; |
| |
| |
| @interface NSEvent(AWTAdditions) |
| |
| + (void)javaDraggingBegin; |
| + (void)javaDraggingEnd; |
| |
| @end |
| |
| |
| @implementation NSEvent(AWTAdditions) |
| |
| |
| + (void)javaDraggingBegin |
| { |
| sIsJavaDragging = YES; |
| } |
| |
| + (void)javaDraggingEnd |
| { |
| // sIsJavaDragging is reset on mouseDown as well. |
| sIsJavaDragging = NO; |
| } |
| @end |
| |
| JNF_CLASS_CACHE(DataTransfererClass, "sun/awt/datatransfer/DataTransferer"); |
| JNF_CLASS_CACHE(CDragSourceContextPeerClass, "sun/lwawt/macosx/CDragSourceContextPeer"); |
| JNF_CLASS_CACHE(CImageClass, "sun/lwawt/macosx/CImage"); |
| |
| static NSDragOperation sDragOperation; |
| static NSPoint sDraggingLocation; |
| |
| static BOOL sNeedsEnter; |
| |
| @interface CDragSource () |
| // Updates from the destination to the source |
| - (void) postDragEnter; |
| - (void) postDragExit; |
| // Utility |
| - (NSPoint) mapNSScreenPointToJavaWithOffset:(NSPoint) point; |
| @end |
| |
| @implementation CDragSource |
| |
| - (id) init:(jobject)jDragSourceContextPeer |
| component:(jobject)jComponent |
| control:(id)control |
| transferable:(jobject)jTransferable |
| triggerEvent:(jobject)jTrigger |
| dragPosX:(jint)dragPosX |
| dragPosY:(jint)dragPosY |
| modifiers:(jint)extModifiers |
| clickCount:(jint)clickCount |
| timeStamp:(jlong)timeStamp |
| dragImage:(jlong)nsDragImagePtr |
| dragImageOffsetX:(jint)jDragImageOffsetX |
| dragImageOffsetY:(jint)jDragImageOffsetY |
| sourceActions:(jint)jSourceActions |
| formats:(jlongArray)jFormats |
| formatMap:(jobject)jFormatMap |
| { |
| self = [super init]; |
| DLog2(@"[CDragSource init]: %@\n", self); |
| |
| fView = nil; |
| fComponent = nil; |
| |
| // Construct the object if we have a valid model for it: |
| if (control != nil) { |
| fComponent = jComponent; |
| fDragSourceContextPeer = jDragSourceContextPeer; |
| fTransferable = jTransferable; |
| fTriggerEvent = jTrigger; |
| |
| if (nsDragImagePtr) { |
| fDragImage = (NSImage*) jlong_to_ptr(nsDragImagePtr); |
| [fDragImage retain]; |
| } |
| |
| fDragImageOffset = NSMakePoint(jDragImageOffsetX, jDragImageOffsetY); |
| |
| fSourceActions = jSourceActions; |
| fFormats = jFormats; |
| fFormatMap = jFormatMap; |
| |
| fTriggerEventTimeStamp = timeStamp; |
| fDragPos = NSMakePoint(dragPosX, dragPosY); |
| fClickCount = clickCount; |
| fModifiers = extModifiers; |
| |
| // Set this object as a dragging source: |
| |
| fView = [(AWTView *) control retain]; |
| [fView setDragSource:self]; |
| |
| // Let AWTEvent know Java drag is getting underway: |
| [NSEvent javaDraggingBegin]; |
| } |
| |
| else { |
| [self release]; |
| self = nil; |
| } |
| |
| return self; |
| } |
| |
| - (void)removeFromView:(JNIEnv *)env |
| { |
| DLog2(@"[CDragSource removeFromView]: %@\n", self); |
| |
| // Remove this dragging source from the view: |
| [((AWTView *) fView) setDragSource:nil]; |
| |
| // Clean up JNI refs |
| if (fComponent != NULL) { |
| JNFDeleteGlobalRef(env, fComponent); |
| fComponent = NULL; |
| } |
| |
| if (fDragSourceContextPeer != NULL) { |
| JNFDeleteGlobalRef(env, fDragSourceContextPeer); |
| fDragSourceContextPeer = NULL; |
| } |
| |
| if (fTransferable != NULL) { |
| JNFDeleteGlobalRef(env, fTransferable); |
| fTransferable = NULL; |
| } |
| |
| if (fTriggerEvent != NULL) { |
| JNFDeleteGlobalRef(env, fTriggerEvent); |
| fTriggerEvent = NULL; |
| } |
| |
| if (fFormats != NULL) { |
| JNFDeleteGlobalRef(env, fFormats); |
| fFormats = NULL; |
| } |
| |
| if (fFormatMap != NULL) { |
| JNFDeleteGlobalRef(env, fFormatMap); |
| fFormatMap = NULL; |
| } |
| |
| [self release]; |
| } |
| |
| - (void)dealloc |
| { |
| DLog2(@"[CDragSource dealloc]: %@\n", self); |
| |
| // Delete or release local data: |
| [fView release]; |
| fView = nil; |
| |
| [fDragImage release]; |
| fDragImage = nil; |
| |
| [super dealloc]; |
| } |
| |
| // Appropriated from Windows' awt_DataTransferer.cpp: |
| // |
| // * NOTE: This returns a JNI Local Ref. Any code that calls must call DeleteLocalRef with the return value. |
| // |
| - (jobject)dataTransferer:(JNIEnv*)env |
| { |
| JNF_STATIC_MEMBER_CACHE(getInstanceMethod, DataTransfererClass, "getInstance", "()Lsun/awt/datatransfer/DataTransferer;"); |
| return JNFCallStaticObjectMethod(env, getInstanceMethod); |
| } |
| |
| // Appropriated from Windows' awt_DataTransferer.cpp: |
| // |
| // * NOTE: This returns a JNI Local Ref. Any code that calls must call DeleteLocalRef with the return value. |
| // |
| - (jbyteArray)convertData:(jlong)format |
| { |
| JNIEnv* env = [ThreadUtilities getJNIEnv]; |
| jobject transferer = [self dataTransferer:env]; |
| jbyteArray data = nil; |
| |
| if (transferer != NULL) { |
| JNF_MEMBER_CACHE(convertDataMethod, DataTransfererClass, "convertData", "(Ljava/lang/Object;Ljava/awt/datatransfer/Transferable;JLjava/util/Map;Z)[B"); |
| data = JNFCallObjectMethod(env, transferer, convertDataMethod, fComponent, fTransferable, format, fFormatMap, (jboolean) TRUE); |
| } |
| |
| return data; |
| } |
| |
| |
| // Encodes a byte array of zero-terminated filenames into an NSArray of NSStrings representing them. |
| // Borrowed and adapted from awt_DataTransferer.c, convertFileType(). |
| - (id)getFileList:(jbyte *)jbytes dataLength:(jsize)jbytesLength |
| { |
| jsize strings = 0; |
| jsize i; |
| |
| // Get number of filenames while making sure to skip over empty strings. |
| for (i = 1; i < jbytesLength; i++) { |
| if (jbytes[i] == '\0' && jbytes[i - 1] != '\0') |
| strings++; |
| } |
| |
| // Create the file list to return: |
| NSMutableArray* fileList = [NSMutableArray arrayWithCapacity:strings]; |
| |
| for (i = 0; i < jbytesLength; i++) { |
| char* start = (char *) &jbytes[i]; |
| |
| // Skip over empty strings: |
| if (start[0] == '\0') { |
| continue; |
| } |
| |
| // Update the position marker: |
| i += strlen(start); |
| |
| // Add this filename to the file list: |
| NSMutableString* fileName = [NSMutableString stringWithUTF8String:start]; |
| // Decompose the filename |
| CFStringNormalize((CFMutableStringRef)fileName, kCFStringNormalizationFormD); |
| [fileList addObject:fileName]; |
| } |
| |
| // 03-01-09 Note: keep this around for debugging. |
| // return [NSArray arrayWithObjects:@"/tmp/foo1", @"/tmp/foo2", nil]; |
| |
| return ([fileList count] > 0 ? fileList : nil); |
| } |
| |
| |
| // Set up the pasteboard for dragging: |
| - (BOOL)declareTypesToPasteboard:(NSPasteboard *)pb withEnv:(JNIEnv *) env { |
| // 9-20-02 Note: leave this here for debugging: |
| //[pb declareTypes: [NSArray arrayWithObject: NSStringPboardType] owner: self]; |
| //return TRUE; |
| |
| // Get byte array elements: |
| jboolean isCopy; |
| jlong* jformats = (*env)->GetLongArrayElements(env, fFormats, &isCopy); |
| if (jformats == nil) |
| return FALSE; |
| |
| // Allocate storage arrays for dragging types to register with the pasteboard: |
| jsize formatsLength = (*env)->GetArrayLength(env, fFormats); |
| NSMutableArray* pbTypes = [[NSMutableArray alloc] initWithCapacity:formatsLength]; |
| |
| // And assume there are no NS-type data: [Radar 3065621] |
| // This is to be able to drop transferables containing only a serialized object flavor, e.g.: |
| // "JAVA_DATAFLAVOR:application/x-java-serialized-object; class=java.awt.Label". |
| BOOL hasNSTypeData = false; |
| |
| // Collect all supported types in a pasteboard format into the storage arrays: |
| jsize i; |
| for (i = 0; i < formatsLength; i++) { |
| jlong jformat = jformats[i]; |
| |
| if (jformat >= 0) { |
| NSString* type = formatForIndex(jformat); |
| |
| // Add element type to the storage array. |
| if (type != nil) { |
| if ([type hasPrefix:@"JAVA_DATAFLAVOR:application/x-java-jvm-local-objectref;"] == false) { |
| [pbTypes addObject:type]; |
| |
| // This is a good approximation if not perfect. A conclusive search would |
| // have to be done matching all defined strings in AppKit's commonStrings.h. |
| hasNSTypeData = [type hasPrefix:@"NS"] || [type hasPrefix:@"NeXT"] || [type hasPrefix:@"public."]; |
| } |
| } |
| } |
| } |
| |
| // 1-16-03 Note: [Radar 3065621] |
| // When TransferHandler is used with Swing components it puts only a type like this on the pasteboard: |
| // "JAVA_DATAFLAVOR:application/x-java-jvm-local-objectref; class=java.lang.String" |
| // And there's similar type for serialized object only transferables. |
| // Since our drop targets aren't trained for arbitrary data types yet we need to fake an empty string |
| // which will cause drop target handlers to fire. |
| // KCH - 3550405 If the drag is between Swing components, formatsLength == 0, so expand the check. |
| // Also, use a custom format rather than NSString, since that will prevent random views from accepting the drag |
| if (hasNSTypeData == false && formatsLength >= 0) { |
| [pbTypes addObject:[DnDUtilities javaPboardType]]; |
| } |
| |
| (*env)->ReleaseLongArrayElements(env, fFormats, jformats, JNI_ABORT); |
| |
| // Declare pasteboard types. If the types array is empty we still want to declare them |
| // as otherwise an old set of types/data would remain on the pasteboard. |
| NSUInteger typesCount = [pbTypes count]; |
| [pb declareTypes:pbTypes owner: self]; |
| |
| // KCH - Lame conversion bug between Cocoa and Carbon drag types |
| // If I provide the filenames _right now_, NSFilenamesPboardType is properly converted to CoreDrag flavors |
| // If I try to wait until pasteboard:provideDataForType:, the conversion won't happen |
| // and pasteboard:provideDataForType: won't even get called! (unless I go over a Cocoa app) |
| if ([pbTypes containsObject:NSFilenamesPboardType]) { |
| [self pasteboard:pb provideDataForType:NSFilenamesPboardType]; |
| } |
| |
| [pbTypes release]; |
| |
| return typesCount > 0 ? TRUE : FALSE; |
| } |
| |
| // This is an NSPasteboard callback. In declareTypesToPasteboard:withEnv:, we only declared the types |
| // When the AppKit DnD system actually needs the data, this method will be invoked. |
| // Note that if the transfer is handled entirely from Swing (as in a local-vm drag), this method may never be called. |
| - (void)pasteboard:(NSPasteboard *)pb provideDataForType:(NSString *)type { |
| AWT_ASSERT_APPKIT_THREAD; |
| |
| // 9-20-02 Note: leave this here for debugging: |
| //[pb setString: @"Hello, World!" forType: NSStringPboardType]; |
| // return; |
| |
| // Set up Java environment: |
| JNIEnv* env = [ThreadUtilities getJNIEnv]; |
| |
| id pbData = nil; |
| |
| // Collect data in a pasteboard format: |
| jlong jformat = indexForFormat(type); |
| if (jformat >= 0) { |
| // Convert DataTransfer data to a Java byte array: |
| // Note that this will eventually call getTransferData() |
| jbyteArray jdata = [self convertData:jformat]; |
| |
| if (jdata != nil) { |
| jboolean isCopy; |
| jsize jdataLength = (*env)->GetArrayLength(env, jdata); |
| jbyte* jbytedata = (*env)->GetByteArrayElements(env, jdata, &isCopy); |
| |
| if (jdataLength > 0 && jbytedata != nil) { |
| // Get element data to the storage array. For NSFilenamesPboardType type we use |
| // an NSArray-type data - NSData-type data would cause a crash. |
| if (type != nil) { |
| pbData = ([type isEqualTo:NSFilenamesPboardType]) ? |
| [self getFileList:jbytedata dataLength:jdataLength] : |
| [NSData dataWithBytes:jbytedata length:jdataLength]; |
| } |
| } |
| |
| (*env)->ReleaseByteArrayElements(env, jdata, jbytedata, JNI_ABORT); |
| |
| (*env)->DeleteLocalRef(env, jdata); |
| } |
| } |
| |
| // If we are the custom type that matches local-vm drags, set an empty NSData |
| if ( (pbData == nil) && ([type isEqualTo:[DnDUtilities javaPboardType]]) ) { |
| pbData = [NSData dataWithBytes:"" length:1]; |
| } |
| |
| // Add pasteboard data for the type: |
| // Remember, NSFilenamesPboardType's data is NSArray (property list), not NSData! |
| // We must use proper pb accessor depending on the data type. |
| if ([pbData isKindOfClass:[NSArray class]]) |
| [pb setPropertyList:pbData forType:type]; |
| else |
| [pb setData:pbData forType:type]; |
| } |
| |
| |
| - (void)validateDragImage |
| { |
| // Make a small blank image if we don't have a drag image: |
| if (fDragImage == nil) { |
| // 9-30-02 Note: keep this around for debugging: |
| fDragImage = [[NSImage alloc] initWithSize:NSMakeSize(21, 21)]; |
| NSSize imageSize = [fDragImage size]; |
| |
| NSBitmapImageRep *imageRep = [[NSBitmapImageRep alloc] initWithBitmapDataPlanes:NULL |
| pixelsWide:imageSize.width pixelsHigh:imageSize.height bitsPerSample:8 samplesPerPixel:4 |
| hasAlpha:YES isPlanar:NO colorSpaceName:NSCalibratedRGBColorSpace bytesPerRow:0 bitsPerPixel:32]; |
| |
| [fDragImage addRepresentation:imageRep]; |
| fDragImageOffset = NSMakePoint(0, 0); |
| |
| [imageRep release]; |
| } |
| } |
| |
| - (NSEvent*)nsDragEvent:(BOOL)isDrag |
| { |
| // Get NSView for the drag source: |
| NSWindow* window = [fView window]; |
| |
| NSInteger windowNumber = [window windowNumber]; |
| |
| // Convert mouse coordinates to NS: |
| NSPoint eventLocation = [fView convertPoint:NSMakePoint(fDragPos.x, fDragPos.y) toView:nil]; |
| eventLocation.y = [[fView window] frame].size.height - eventLocation.y; |
| |
| // Convert fTriggerEventTimeStamp to NS - AWTEvent.h defines UTC(nsEvent) as ((jlong)[event timestamp] * 1000): |
| NSTimeInterval timeStamp = fTriggerEventTimeStamp / 1000; |
| |
| // Convert fModifiers (extModifiers) to NS: |
| NSEventType mouseButtons = 0; |
| float pressure = 0.0; |
| if (isDrag) { |
| mouseButtons = (NSEventType) [DnDUtilities mapJavaExtModifiersToNSMouseDownButtons:fModifiers]; |
| pressure = 1.0; |
| } else { |
| mouseButtons = (NSEventType) [DnDUtilities mapJavaExtModifiersToNSMouseUpButtons:fModifiers]; |
| } |
| |
| // Convert fModifiers (extModifiers) to NS: |
| NSUInteger modifiers = JavaModifiersToNsKeyModifiers(fModifiers, TRUE); |
| |
| // Just a dummy value ... |
| NSInteger eventNumber = 0; |
| // NSEvent.context is deprecated and unused |
| NSGraphicsContext* unusedPassNil = nil; |
| |
| // Make a native autoreleased dragging event: |
| NSEvent* dragEvent = [NSEvent mouseEventWithType:mouseButtons location:eventLocation |
| modifierFlags:modifiers timestamp:timeStamp windowNumber:windowNumber context:unusedPassNil |
| eventNumber:eventNumber clickCount:fClickCount pressure:pressure]; |
| |
| return dragEvent; |
| } |
| |
| - (void)doDrag |
| { |
| AWT_ASSERT_APPKIT_THREAD; |
| |
| DLog2(@"[CDragSource doDrag]: %@\n", self); |
| |
| // Set up Java environment: |
| JNIEnv *env = [ThreadUtilities getJNIEnv]; |
| |
| // Set up the pasteboard: |
| NSPasteboard *pb = [NSPasteboard pasteboardWithName: NSDragPboard]; |
| [self declareTypesToPasteboard:pb withEnv:env]; |
| |
| // Make a native autoreleased NS dragging event: |
| NSEvent *dragEvent = [self nsDragEvent:YES]; |
| |
| // Get NSView for the drag source: |
| NSView *view = fView; |
| |
| // Make sure we have a valid drag image: |
| [self validateDragImage]; |
| NSImage* dragImage = fDragImage; |
| |
| // Get drag origin and offset: |
| NSPoint dragOrigin = [dragEvent locationInWindow]; |
| dragOrigin.x += fDragImageOffset.x; |
| dragOrigin.y -= fDragImageOffset.y + [dragImage size].height; |
| |
| // Drag offset values don't seem to matter: |
| NSSize dragOffset = NSMakeSize(0, 0); |
| |
| // These variables should be set based on the transferable: |
| BOOL isFileDrag = FALSE; |
| BOOL fileDragPromises = FALSE; |
| |
| DLog(@"[CDragSource drag]: calling dragImage/File:"); |
| DLog3(@" - drag origin: %f, %f", fDragPos.x, fDragPos.y); |
| DLog5(@" - drag image: %f, %f (%f x %f)", fDragImageOffset.x, fDragImageOffset.y, [dragImage size].width, [dragImage size].height); |
| DLog3(@" - event point (window) %f, %f", [dragEvent locationInWindow].x, [dragEvent locationInWindow].y); |
| DLog3(@" - drag point (view) %f, %f", dragOrigin.x, dragOrigin.y); |
| // Set up the fDragKeyModifier, so we know if the operation has changed |
| // Set up the fDragMouseModifier, so we can |= it later (since CoreDrag doesn't tell us mouse states during a drag) |
| fDragKeyModifiers = [DnDUtilities extractJavaExtKeyModifiersFromJavaExtModifiers:fModifiers]; |
| fDragMouseModifiers = [DnDUtilities extractJavaExtMouseModifiersFromJavaExtModifiers:fModifiers]; |
| |
| sNeedsEnter = YES; |
| |
| @try { |
| // Data dragging: |
| if (isFileDrag == FALSE) { |
| [view dragImage:dragImage at:dragOrigin offset:dragOffset event:dragEvent pasteboard:pb source:view slideBack:YES]; |
| } else if (fileDragPromises == FALSE) { |
| // File dragging: |
| NSLog(@"[CDragSource drag]: file dragging is unsupported."); |
| NSString* fileName = nil; // This should be set based on the transferable. |
| NSRect fileLocationRect = NSMakeRect(0, 0, 0, 0); // This should be set based on the filename. |
| |
| BOOL success = [view dragFile:fileName fromRect:fileLocationRect slideBack:YES event:dragEvent]; |
| if (success == TRUE) { // One would erase dragged file if this was a move operation. |
| } |
| } else { |
| // Promised file dragging: |
| NSLog(@"[CDragSource drag]: file dragging promises are unsupported."); |
| NSArray* fileTypesArray = nil; // This should be set based on the transferable. |
| NSRect fileLocationRect = NSMakeRect(0, 0, 0, 0); // This should be set based on all filenames. |
| |
| BOOL success = [view dragPromisedFilesOfTypes:fileTypesArray fromRect:fileLocationRect source:view slideBack:YES event:dragEvent]; |
| if (success == TRUE) { // One would write out the promised files here. |
| } |
| } |
| |
| NSPoint point = [self mapNSScreenPointToJavaWithOffset:sDraggingLocation]; |
| |
| // Convert drag operation to Java: |
| jint dragOp = [DnDUtilities mapNSDragOperationToJava:sDragOperation]; |
| |
| // Drag success must acount for DragOperationNone: |
| jboolean success = (dragOp != java_awt_dnd_DnDConstants_ACTION_NONE); |
| |
| // We have a problem here... we don't send DragSource dragEnter/Exit messages outside of our own process |
| // because we don't get anything from AppKit/CoreDrag |
| // This means that if you drag outside of the app and drop, even if it's valid, a dragDropFinished is posted without dragEnter |
| // I'm worried that this might confuse Java, so we're going to send a "bogus" dragEnter if necessary (only if the drag succeeded) |
| if (success && sNeedsEnter) { |
| [self postDragEnter]; |
| } |
| |
| // DragSourceContextPeer.dragDropFinished() should be called even if there was an error: |
| JNF_MEMBER_CACHE(dragDropFinishedMethod, CDragSourceContextPeerClass, "dragDropFinished", "(ZIII)V"); |
| DLog3(@" -> posting dragDropFinished, point %f, %f", point.x, point.y); |
| JNFCallVoidMethod(env, fDragSourceContextPeer, dragDropFinishedMethod, success, dragOp, (jint) point.x, (jint) point.y); // AWT_THREADING Safe (event) |
| JNF_MEMBER_CACHE(resetHoveringMethod, CDragSourceContextPeerClass, "resetHovering", "()V"); |
| JNFCallVoidMethod(env, fDragSourceContextPeer, resetHoveringMethod); // Hust reset static variable |
| } @finally { |
| sNeedsEnter = NO; |
| } |
| |
| // We have to do this, otherwise AppKit doesn't know we're finished dragging. Yup, it's that bad. |
| if ([[[NSRunLoop currentRunLoop] currentMode] isEqualTo:NSEventTrackingRunLoopMode]) { |
| [NSApp postEvent:[self nsDragEvent:NO] atStart:YES]; |
| } |
| |
| DLog2(@"[CDragSource doDrag] end: %@\n", self); |
| } |
| |
| - (void)drag |
| { |
| AWT_ASSERT_NOT_APPKIT_THREAD; |
| |
| [self performSelectorOnMainThread:@selector(doDrag) withObject:nil waitUntilDone:YES]; // AWT_THREADING Safe (called from unique asynchronous thread) |
| } |
| |
| /******************************** BEGIN NSDraggingSource Interface ********************************/ |
| |
| - (void)draggingOperationChanged:(NSDragOperation)dragOp { |
| //DLog2(@"[CDragSource draggingOperationChanged]: %@\n", self); |
| |
| JNIEnv* env = [ThreadUtilities getJNIEnv]; |
| |
| jint targetActions = fSourceActions; |
| if ([CDropTarget currentDropTarget]) targetActions = [[CDropTarget currentDropTarget] currentJavaActions]; |
| |
| NSPoint point = [self mapNSScreenPointToJavaWithOffset:sDraggingLocation]; |
| DLog3(@" -> posting operationChanged, point %f, %f", point.x, point.y); |
| jint modifiedModifiers = fDragKeyModifiers | fDragMouseModifiers | [DnDUtilities javaKeyModifiersForNSDragOperation:dragOp]; |
| |
| JNF_MEMBER_CACHE(operationChangedMethod, CDragSourceContextPeerClass, "operationChanged", "(IIII)V"); |
| JNFCallVoidMethod(env, fDragSourceContextPeer, operationChangedMethod, targetActions, modifiedModifiers, (jint) point.x, (jint) point.y); // AWT_THREADING Safe (event) |
| } |
| |
| - (NSDragOperation)draggingSourceOperationMaskForLocal:(BOOL)localDrag { |
| //DLog2(@"[CDragSource draggingSourceOperationMaskForLocal]: %@\n", self); |
| return [DnDUtilities mapJavaDragOperationToNS:fSourceActions]; |
| } |
| |
| /* 9-16-02 Note: we don't support promises yet. |
| - (NSArray *)namesOfPromisedFilesDroppedAtDestination:(NSURL *)dropDestination { |
| }*/ |
| |
| - (void)draggedImage:(NSImage *)image beganAt:(NSPoint)screenPoint { |
| DLog4(@"[CDragSource draggedImage beganAt]: (%f, %f) %@\n", screenPoint.x, screenPoint.y, self); |
| |
| // Initialize static variables: |
| sDragOperation = NSDragOperationNone; |
| sDraggingLocation = screenPoint; |
| } |
| |
| - (void)draggedImage:(NSImage *)image endedAt:(NSPoint)screenPoint operation:(NSDragOperation)operation { |
| DLog4(@"[CDragSource draggedImage endedAt:]: (%f, %f) %@\n", screenPoint.x, screenPoint.y, self); |
| |
| sDraggingLocation = screenPoint; |
| sDragOperation = operation; |
| } |
| |
| - (void)draggedImage:(NSImage *)image movedTo:(NSPoint)screenPoint { |
| //DLog4(@"[CDragSource draggedImage moved]: (%d, %d) %@\n", (int) screenPoint.x, (int) screenPoint.y, self); |
| JNIEnv* env = [ThreadUtilities getJNIEnv]; |
| |
| JNF_COCOA_ENTER(env); |
| // There are two things we would be interested in: |
| // a) mouse pointer has moved |
| // b) drag actions (key modifiers) have changed |
| |
| BOOL notifyJava = FALSE; |
| |
| // a) mouse pointer has moved: |
| if (NSEqualPoints(screenPoint, sDraggingLocation) == FALSE) { |
| //DLog2(@"[CDragSource draggedImage:movedTo]: mouse moved, %@\n", self); |
| notifyJava = TRUE; |
| } |
| |
| // b) drag actions (key modifiers) have changed: |
| jint modifiers = NsKeyModifiersToJavaModifiers([NSEvent modifierFlags], YES); |
| if (fDragKeyModifiers != modifiers) { |
| NSDragOperation currentOp = [DnDUtilities nsDragOperationForModifiers:[NSEvent modifierFlags]]; |
| NSDragOperation allowedOp = [DnDUtilities mapJavaDragOperationToNS:fSourceActions] & currentOp; |
| |
| fDragKeyModifiers = modifiers; |
| |
| if (sDragOperation != allowedOp) { |
| sDragOperation = allowedOp; |
| [self draggingOperationChanged:allowedOp]; |
| } |
| } |
| |
| // Should we notify Java things have changed? |
| if (notifyJava) { |
| sDraggingLocation = screenPoint; |
| |
| NSPoint point = [self mapNSScreenPointToJavaWithOffset:screenPoint]; |
| |
| jint targetActions = fSourceActions; |
| if ([CDropTarget currentDropTarget]) targetActions = [[CDropTarget currentDropTarget] currentJavaActions]; |
| |
| // Motion: dragMotion, dragMouseMoved |
| DLog4(@"[CDragSource draggedImage moved]: (%f, %f) %@\n", screenPoint.x, screenPoint.y, self); |
| |
| DLog3(@" -> posting dragMotion, point %f, %f", point.x, point.y); |
| JNF_MEMBER_CACHE(dragMotionMethod, CDragSourceContextPeerClass, "dragMotion", "(IIII)V"); |
| JNFCallVoidMethod(env, fDragSourceContextPeer, dragMotionMethod, targetActions, (jint) fModifiers, (jint) point.x, (jint) point.y); // AWT_THREADING Safe (event) |
| |
| DLog3(@" -> posting dragMouseMoved, point %f, %f", point.x, point.y); |
| JNF_MEMBER_CACHE(dragMouseMovedMethod, CDragSourceContextPeerClass, "dragMouseMoved", "(IIII)V"); |
| JNFCallVoidMethod(env, fDragSourceContextPeer, dragMouseMovedMethod, targetActions, (jint) fModifiers, (jint) point.x, (jint) point.y); // AWT_THREADING Safe (event) |
| } |
| JNF_COCOA_EXIT(env); |
| } |
| |
| - (BOOL)ignoreModifierKeysWhileDragging { |
| //DLog2(@"[CDragSource ignoreModifierKeysWhileDragging]: %@\n", self); |
| return NO; |
| } |
| |
| /******************************** END NSDraggingSource Interface ********************************/ |
| |
| |
| // postDragEnter and postDragExit are called from CDropTarget when possible and appropriate |
| // Currently only possible if source and target are in the same process |
| - (void) postDragEnter { |
| JNIEnv *env = [ThreadUtilities getJNIEnv]; |
| sNeedsEnter = NO; |
| |
| jint targetActions = fSourceActions; |
| if ([CDropTarget currentDropTarget]) targetActions = [[CDropTarget currentDropTarget] currentJavaActions]; |
| |
| NSPoint point = [self mapNSScreenPointToJavaWithOffset:sDraggingLocation]; |
| DLog3(@" -> posting dragEnter, point %f, %f", point.x, point.y); |
| JNF_MEMBER_CACHE(dragEnterMethod, CDragSourceContextPeerClass, "dragEnter", "(IIII)V"); |
| JNFCallVoidMethod(env, fDragSourceContextPeer, dragEnterMethod, targetActions, (jint) fModifiers, (jint) point.x, (jint) point.y); // AWT_THREADING Safe (event) |
| } |
| |
| - (void) postDragExit { |
| JNIEnv *env = [ThreadUtilities getJNIEnv]; |
| sNeedsEnter = YES; |
| |
| NSPoint point = [self mapNSScreenPointToJavaWithOffset:sDraggingLocation]; |
| DLog3(@" -> posting dragExit, point %f, %f", point.x, point.y); |
| JNF_MEMBER_CACHE(dragExitMethod, CDragSourceContextPeerClass, "dragExit", "(II)V"); |
| JNFCallVoidMethod(env, fDragSourceContextPeer, dragExitMethod, (jint) point.x, (jint) point.y); // AWT_THREADING Safe (event) |
| } |
| |
| |
| // Java assumes that the origin is the top-left corner of the screen. |
| // Cocoa assumes that the origin is the bottom-left corner of the screen. |
| // Adjust the y coordinate to account for this. |
| // NOTE: Also need to take into account the 0 screen relative screen coords. |
| // This is because all screen coords in Cocoa are relative to the 0 screen. |
| // Also see +[CWindow convertAWTToCocoaScreenRect] |
| // NSScreen-to-JavaScreen mapping: |
| - (NSPoint) mapNSScreenPointToJavaWithOffset:(NSPoint)screenPoint { |
| NSRect mainR = [[[NSScreen screens] objectAtIndex:0] frame]; |
| NSPoint point = NSMakePoint(screenPoint.x, mainR.size.height - (screenPoint.y)); |
| |
| // Adjust the point with the drag image offset to get the real mouse hotspot: |
| // The point should remain in screen coordinates (as per DragSourceEvent.getLocation() documentation) |
| point.x -= fDragImageOffset.x; |
| point.y -= ([fDragImage size].height + fDragImageOffset.y); |
| |
| return point; |
| } |
| |
| @end |