jdk/src/macosx/native/sun/awt/AWTView.m
changeset 12047 320a714614e9
child 12178 6b681d75ebe5
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/macosx/native/sun/awt/AWTView.m	Tue Mar 06 20:34:38 2012 +0000
@@ -0,0 +1,1206 @@
+/*
+ * Copyright (c) 2011, 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.
+ */
+
+#import "CGLGraphicsConfig.h"
+
+#import <JavaNativeFoundation/JavaNativeFoundation.h>
+#import <JavaRuntimeSupport/JavaRuntimeSupport.h>
+
+#import "ThreadUtilities.h"
+#import "AWTView.h"
+#import "AWTEvent.h"
+#import "AWTWindow.h"
+#import "LWCToolkit.h"
+#import "JavaComponentAccessibility.h"
+#import "JavaTextAccessibility.h"
+#import "GeomUtilities.h"
+#import "OSVersion.h"
+#import "CGLLayer.h"
+
+@interface AWTView()
+@property (retain) CDropTarget *_dropTarget;
+@property (retain) CDragSource *_dragSource;
+@end
+
+// Uncomment this line to see fprintfs of each InputMethod API being called on this View
+//#define IM_DEBUG TRUE
+//#define EXTRA_DEBUG
+
+
+static BOOL shouldUsePressAndHold() {
+    static int shouldUsePressAndHold = -1;
+    if (shouldUsePressAndHold != -1) return shouldUsePressAndHold;
+    shouldUsePressAndHold = !isSnowLeopardOrLower();
+    return shouldUsePressAndHold;
+}
+
+@implementation AWTView
+
+@synthesize _dropTarget;
+@synthesize _dragSource;
+@synthesize cglLayer;
+
+// Note: Must be called on main (AppKit) thread only
+- (id) initWithRect: (NSRect) rect
+       platformView: (jobject) cPlatformView
+       windowLayer: (CALayer*) windowLayer
+{
+AWT_ASSERT_APPKIT_THREAD;
+    // Initialize ourselves
+    self = [super initWithFrame: rect];
+    if (self == nil) return self;
+
+    m_cPlatformView = cPlatformView;
+    fInputMethodLOCKABLE = NULL;
+    fKeyEventsNeeded = NO;
+    fProcessingKeystroke = NO;
+
+    fEnablePressAndHold = shouldUsePressAndHold();
+    fInPressAndHold = NO;
+    fPAHNeedsToSelect = NO;
+
+    if (windowLayer != nil) {
+        self.cglLayer = windowLayer;
+        [self setWantsLayer: YES];
+        [self.layer addSublayer: (CALayer *)cglLayer];
+        [self setLayerContentsRedrawPolicy: NSViewLayerContentsRedrawDuringViewResize];
+        [self setLayerContentsPlacement: NSViewLayerContentsPlacementTopLeft];
+        [self setAutoresizingMask: NSViewHeightSizable | NSViewWidthSizable];
+
+#ifdef REMOTELAYER
+        CGLLayer *parentLayer = (CGLLayer*)self.cglLayer;
+        parentLayer.parentLayer = NULL;
+        parentLayer.remoteLayer = NULL;
+        if (JRSRemotePort != 0 && remoteSocketFD > 0) {
+            CGLLayer *remoteLayer = [[CGLLayer alloc] initWithJavaLayer: parentLayer.javaLayer];
+            remoteLayer.target = GL_TEXTURE_2D;
+            NSLog(@"Creating Parent=%p, Remote=%p", parentLayer, remoteLayer);
+            parentLayer.remoteLayer = remoteLayer;
+            remoteLayer.parentLayer = parentLayer;
+            remoteLayer.remoteLayer = NULL;
+            remoteLayer.jrsRemoteLayer = [remoteLayer createRemoteLayerBoundTo:JRSRemotePort];
+            CFRetain(remoteLayer);  // REMIND
+            remoteLayer.frame = CGRectMake(0, 0, 720, 500); // REMIND
+            CFRetain(remoteLayer.jrsRemoteLayer); // REMIND
+            int layerID = [remoteLayer.jrsRemoteLayer layerID];
+            NSLog(@"layer id to send = %d", layerID);
+            sendLayerID(layerID);
+        }
+#endif /* REMOTELAYER */
+    }
+
+    return self;
+}
+
+- (void) dealloc {
+AWT_ASSERT_APPKIT_THREAD;
+
+    self.cglLayer = nil;
+
+    JNIEnv *env = [ThreadUtilities getJNIEnv];
+    (*env)->DeleteGlobalRef(env, m_cPlatformView);
+    m_cPlatformView = NULL;
+
+    if (fInputMethodLOCKABLE != NULL)
+    {
+        JNIEnv *env = [ThreadUtilities getJNIEnvUncached];
+
+        JNFDeleteGlobalRef(env, fInputMethodLOCKABLE);
+        fInputMethodLOCKABLE = NULL;
+    }
+
+
+    [super dealloc];
+}
+
+- (void) viewDidMoveToWindow {
+AWT_ASSERT_APPKIT_THREAD;
+
+    [AWTToolkit eventCountPlusPlus];
+
+    [JNFRunLoop performOnMainThreadWaiting:NO withBlock:^() {
+        [[self window] makeFirstResponder: self];
+    }];
+    if ([self window] != NULL) {
+        [self resetTrackingRect];
+    }
+}
+
+- (BOOL) acceptsFirstMouse: (NSEvent *)event {
+    return YES;
+}
+
+- (BOOL) acceptsFirstResponder {
+    return YES;
+}
+
+- (BOOL) becomeFirstResponder {
+    return YES;
+}
+
+- (BOOL) preservesContentDuringLiveResize {
+    return YES;
+}
+
+/*
+ * Automatically triggered functions.
+ */
+
+/*
+ * MouseEvents support
+ */
+
+- (void) mouseDown: (NSEvent *)event {
+    NSInputManager *inputManager = [NSInputManager currentInputManager];
+    if ([inputManager wantsToHandleMouseEvents]) {
+#if IM_DEBUG
+        NSLog(@"-> IM wants to handle event");
+#endif
+        if (![inputManager handleMouseEvent:event]) {
+            [self deliverJavaMouseEvent: event];
+        } else {
+#if IM_DEBUG
+            NSLog(@"-> Event was handled.");
+#endif
+        }
+    } else {
+        NSLog(@"-> IM does not want to handle event");
+        [self deliverJavaMouseEvent: event];
+    }
+}
+
+- (void) mouseUp: (NSEvent *)event {
+    [self deliverJavaMouseEvent: event];
+}
+
+- (void) rightMouseDown: (NSEvent *)event {
+    [self deliverJavaMouseEvent: event];
+}
+
+- (void) rightMouseUp: (NSEvent *)event {
+    [self deliverJavaMouseEvent: event];
+}
+
+- (void) otherMouseDown: (NSEvent *)event {
+    [self deliverJavaMouseEvent: event];
+}
+
+- (void) otherMouseUp: (NSEvent *)event {
+    [self deliverJavaMouseEvent: event];
+}
+
+- (void) mouseMoved: (NSEvent *)event {
+    // TODO: better way to redirect move events to the "under" view
+
+    NSPoint eventLocation = [event locationInWindow];
+    NSPoint localPoint = [self convertPoint: eventLocation fromView: nil];
+
+    if  ([self mouse: localPoint inRect: [self bounds]]) {
+        [self deliverJavaMouseEvent: event];
+    } else {
+        [[self nextResponder] mouseDown:event];
+    }
+}
+
+- (void) mouseDragged: (NSEvent *)event {
+    [self deliverJavaMouseEvent: event];
+}
+
+- (void) rightMouseDragged: (NSEvent *)event {
+    [self deliverJavaMouseEvent: event];
+}
+
+- (void) otherMouseDragged: (NSEvent *)event {
+    [self deliverJavaMouseEvent: event];
+}
+
+- (void) mouseEntered: (NSEvent *)event {
+    [[self window] setAcceptsMouseMovedEvents:YES];
+    //[[self window] makeFirstResponder:self];
+    [self deliverJavaMouseEvent: event];
+}
+
+- (void) mouseExited: (NSEvent *)event {
+    [[self window] setAcceptsMouseMovedEvents:NO];
+    [self deliverJavaMouseEvent: event];
+    //Restore the cursor back.
+    //[CCursorManager _setCursor: [NSCursor arrowCursor]];
+}
+
+- (void) scrollWheel: (NSEvent*) event {
+    [self deliverJavaMouseEvent: event];
+}
+
+/*
+ * KeyEvents support
+ */
+
+- (void) keyDown: (NSEvent *)event {
+
+    fProcessingKeystroke = YES;
+    fKeyEventsNeeded = YES;
+
+    // Allow TSM to look at the event and potentially send back NSTextInputClient messages.
+    [self interpretKeyEvents:[NSArray arrayWithObject:event]];
+
+    if (fEnablePressAndHold && [event willBeHandledByComplexInputMethod]) {
+        fProcessingKeystroke = NO;
+        if (!fInPressAndHold) {
+            fInPressAndHold = YES;
+            fPAHNeedsToSelect = YES;
+        }
+        return;
+    }
+
+    if (![self hasMarkedText] && fKeyEventsNeeded) {
+        [self deliverJavaKeyEventHelper: event];
+    }
+
+    fProcessingKeystroke = NO;
+}
+
+- (void) keyUp: (NSEvent *)event {
+    [self deliverJavaKeyEventHelper: event];
+}
+
+- (void) flagsChanged: (NSEvent *)event {
+    [self deliverJavaKeyEventHelper: event];
+}
+
+- (BOOL) performKeyEquivalent: (NSEvent *) event {
+    [self deliverJavaKeyEventHelper: event];
+    return NO;
+}
+
+/**
+ * Utility methods and accessors
+ */
+
+-(void) deliverJavaMouseEvent: (NSEvent *) event {
+    [AWTToolkit eventCountPlusPlus];
+
+    JNIEnv *env = [ThreadUtilities getJNIEnv];
+
+    NSPoint eventLocation = [event locationInWindow];
+    NSPoint localPoint = [self convertPoint: eventLocation fromView: nil];
+    NSPoint absP = [NSEvent mouseLocation];
+    NSEventType type = [event type];
+
+    // Convert global numbers between Cocoa's coordinate system and Java.
+    // TODO: need consitent way for doing that both with global as well as with local coordinates.
+    // The reason to do it here is one more native method for getting screen dimension otherwise.
+
+    NSRect screenRect = [[NSScreen mainScreen] frame];
+    absP.y = screenRect.size.height - absP.y;
+    jint clickCount;
+
+    if (type == NSMouseEntered ||
+        type == NSMouseExited ||
+        type == NSScrollWheel ||
+        type == NSMouseMoved) {
+        clickCount = 0;
+    } else {
+        clickCount = [event clickCount];
+    }
+
+    static JNF_CLASS_CACHE(jc_NSEvent, "sun/lwawt/macosx/event/NSEvent");
+    static JNF_CTOR_CACHE(jctor_NSEvent, jc_NSEvent, "(IIIIIIIIDD)V");
+    jobject jEvent = JNFNewObject(env, jctor_NSEvent,
+                                  [event type],
+                                  [event modifierFlags],
+                                  clickCount,
+                                  [event buttonNumber],
+                                  (jint)localPoint.x, (jint)localPoint.y,
+                                  (jint)absP.x, (jint)absP.y,
+                                  [event deltaY],
+                                  [event deltaX]);
+    if (jEvent == nil) {
+        // Unable to create event by some reason.
+        return;
+    }
+
+    static JNF_CLASS_CACHE(jc_PlatformView, "sun/lwawt/macosx/CPlatformView");
+    static JNF_MEMBER_CACHE(jm_deliverMouseEvent, jc_PlatformView, "deliverMouseEvent", "(Lsun/lwawt/macosx/event/NSEvent;)V");
+    JNFCallVoidMethod(env, m_cPlatformView, jm_deliverMouseEvent, jEvent);
+}
+
+
+- (void) clearTrackingRect {
+    if (rolloverTrackingRectTag > 0) {
+        [self removeTrackingRect:rolloverTrackingRectTag];
+        rolloverTrackingRectTag = 0;
+    }
+}
+
+- (void) resetTrackingRect {
+    [self clearTrackingRect];
+    rolloverTrackingRectTag = [self addTrackingRect:[self visibleRect]
+                                              owner:self
+                                           userData:NULL
+                                       assumeInside:NO];
+}
+
+- (void)updateTrackingAreas {
+    [super updateTrackingAreas];
+    [self resetTrackingRect];
+}
+
+- (void) resetCursorRects {
+    [super resetCursorRects];
+    [self resetTrackingRect];
+}
+
+-(void) deliverJavaKeyEventHelper: (NSEvent *) event {
+    [AWTToolkit eventCountPlusPlus];
+    JNIEnv *env = [ThreadUtilities getJNIEnv];
+
+    jstring characters = NULL;
+    if ([event type] != NSFlagsChanged) {
+        characters = JNFNSToJavaString(env, [event characters]);
+    }
+
+    static JNF_CLASS_CACHE(jc_NSEvent, "sun/lwawt/macosx/event/NSEvent");
+    static JNF_CTOR_CACHE(jctor_NSEvent, jc_NSEvent, "(IISLjava/lang/String;)V");
+    jobject jevent = JNFNewObject(env, jctor_NSEvent,
+                                  [event type],
+                                  [event modifierFlags],
+                                  [event keyCode],
+                                  characters);
+
+    static JNF_CLASS_CACHE(jc_PlatformView, "sun/lwawt/macosx/CPlatformView");
+    static JNF_MEMBER_CACHE(jm_deliverKeyEvent, jc_PlatformView,
+                            "deliverKeyEvent", "(Lsun/lwawt/macosx/event/NSEvent;)V");
+    JNFCallVoidMethod(env, m_cPlatformView, jm_deliverKeyEvent, jevent);
+
+    if (characters != NULL) {
+        (*env)->DeleteLocalRef(env, characters);
+    }
+}
+
+- (void) drawRect:(NSRect)dirtyRect {
+AWT_ASSERT_APPKIT_THREAD;
+
+    [super drawRect:dirtyRect];
+    JNIEnv *env = [ThreadUtilities getJNIEnv];
+    if (env != NULL) {
+/*
+        if ([self inLiveResize]) {
+        NSRect rs[4];
+        NSInteger count;
+        [self getRectsExposedDuringLiveResize:rs count:&count];
+        for (int i = 0; i < count; i++) {
+            JNU_CallMethodByName(env, NULL, [m_awtWindow cPlatformView],
+                 "deliverWindowDidExposeEvent", "(FFFF)V",
+                 (jfloat)rs[i].origin.x, (jfloat)rs[i].origin.y,
+                 (jfloat)rs[i].size.width, (jfloat)rs[i].size.height);
+        if ((*env)->ExceptionOccurred(env)) {
+            (*env)->ExceptionDescribe(env);
+            (*env)->ExceptionClear(env);
+        }
+        }
+        } else {
+*/
+        static JNF_CLASS_CACHE(jc_CPlatformView, "sun/lwawt/macosx/CPlatformView");
+        static JNF_MEMBER_CACHE(jm_deliverWindowDidExposeEvent, jc_CPlatformView, "deliverWindowDidExposeEvent", "()V");
+        JNFCallVoidMethod(env, m_cPlatformView, jm_deliverWindowDidExposeEvent);
+/*
+        }
+*/
+    }
+}
+
+// NSAccessibility support
+- (jobject)awtComponent:(JNIEnv*)env
+{
+    static JNF_CLASS_CACHE(jc_CPlatformView, "sun/lwawt/macosx/CPlatformView");
+    static JNF_MEMBER_CACHE(jf_Peer, jc_CPlatformView, "peer", "Lsun/lwawt/LWWindowPeer;");
+    if ((env == NULL) || (m_cPlatformView == NULL)) {
+        NSLog(@"Apple AWT : Error AWTView:awtComponent given bad parameters.");
+        if (env != NULL)
+        {
+            JNFDumpJavaStack(env);
+        }
+        return NULL;
+    }
+    jobject peer = JNFGetObjectField(env, m_cPlatformView, jf_Peer);
+    static JNF_CLASS_CACHE(jc_LWWindowPeer, "sun/lwawt/LWWindowPeer");
+    static JNF_MEMBER_CACHE(jf_Target, jc_LWWindowPeer, "target", "Ljava/awt/Component;");
+    if (peer == NULL) {
+        NSLog(@"Apple AWT : Error AWTView:awtComponent got null peer from CPlatformView");
+        JNFDumpJavaStack(env);
+        return NULL;
+    }
+    return JNFGetObjectField(env, peer, jf_Target);
+}
+
+- (id)getAxData:(JNIEnv*)env
+{
+    return [[[JavaComponentAccessibility alloc] initWithParent:self withEnv:env withAccessible:[self awtComponent:env] withIndex:-1 withView:self withJavaRole:nil] autorelease];
+}
+
+- (NSArray *)accessibilityAttributeNames
+{
+    return [[super accessibilityAttributeNames] arrayByAddingObject:NSAccessibilityChildrenAttribute];
+}
+
+// NSAccessibility messages
+// attribute methods
+- (id)accessibilityAttributeValue:(NSString *)attribute
+{
+    AWT_ASSERT_APPKIT_THREAD;
+
+    if ([attribute isEqualToString:NSAccessibilityChildrenAttribute])
+    {
+        JNIEnv *env = [ThreadUtilities getJNIEnv];
+
+        (*env)->PushLocalFrame(env, 4);
+
+        id result = NSAccessibilityUnignoredChildrenForOnlyChild([self getAxData:env]);
+
+        (*env)->PopLocalFrame(env, NULL);
+
+        return result;
+    }
+    else
+    {
+        return [super accessibilityAttributeValue:attribute];
+    }
+}
+- (BOOL)accessibilityIsIgnored
+{
+    return YES;
+}
+
+- (id)accessibilityHitTest:(NSPoint)point
+{
+    AWT_ASSERT_APPKIT_THREAD;
+    JNIEnv *env = [ThreadUtilities getJNIEnv];
+
+    (*env)->PushLocalFrame(env, 4);
+
+    id result = [[self getAxData:env] accessibilityHitTest:point withEnv:env];
+
+    (*env)->PopLocalFrame(env, NULL);
+
+    return result;
+}
+
+- (id)accessibilityFocusedUIElement
+{
+    AWT_ASSERT_APPKIT_THREAD;
+
+    JNIEnv *env = [ThreadUtilities getJNIEnv];
+
+    (*env)->PushLocalFrame(env, 4);
+
+    id result = [[self getAxData:env] accessibilityFocusedUIElement];
+
+    (*env)->PopLocalFrame(env, NULL);
+
+    return result;
+}
+
+// --- Services menu support for lightweights ---
+
+// finds the focused accessable element, and if it's a text element, obtains the text from it
+- (NSString *)accessibleSelectedText
+{
+    id focused = [self accessibilityFocusedUIElement];
+    if (![focused isKindOfClass:[JavaTextAccessibility class]]) return nil;
+    return [(JavaTextAccessibility *)focused accessibilitySelectedTextAttribute];
+}
+
+// same as above, but converts to RTFD
+- (NSData *)accessibleSelectedTextAsRTFD
+{
+    NSString *selectedText = [self accessibleSelectedText];
+    NSAttributedString *styledText = [[NSAttributedString alloc] initWithString:selectedText];
+    NSData *rtfdData = [styledText RTFDFromRange:NSMakeRange(0, [styledText length]) documentAttributes:nil];
+    [styledText release];
+    return rtfdData;
+}
+
+// finds the focused accessable element, and if it's a text element, sets the text in it
+- (BOOL)replaceAccessibleTextSelection:(NSString *)text
+{
+    id focused = [self accessibilityFocusedUIElement];
+    if (![focused isKindOfClass:[JavaTextAccessibility class]]) return NO;
+    [(JavaTextAccessibility *)focused accessibilitySetSelectedTextAttribute:text];
+    return YES;
+}
+
+// called for each service in the Services menu - only handle text for now
+- (id)validRequestorForSendType:(NSString *)sendType returnType:(NSString *)returnType
+{
+    if ([[self window] firstResponder] != self) return nil; // let AWT components handle themselves
+
+    if ([sendType isEqual:NSStringPboardType] || [returnType isEqual:NSStringPboardType]) {
+        NSString *selectedText = [self accessibleSelectedText];
+        if (selectedText) return self;
+    }
+
+    return nil;
+}
+
+// fetch text from Java and hand off to the service
+- (BOOL)writeSelectionToPasteboard:(NSPasteboard *)pboard types:(NSArray *)types
+{
+    if ([types containsObject:NSStringPboardType])
+    {
+        [pboard declareTypes:[NSArray arrayWithObject:NSStringPboardType] owner:nil];
+        return [pboard setString:[self accessibleSelectedText] forType:NSStringPboardType];
+    }
+
+    if ([types containsObject:NSRTFDPboardType])
+    {
+        [pboard declareTypes:[NSArray arrayWithObject:NSRTFDPboardType] owner:nil];
+        return [pboard setData:[self accessibleSelectedTextAsRTFD] forType:NSRTFDPboardType];
+    }
+
+    return NO;
+}
+
+// write text back to Java from the service
+- (BOOL)readSelectionFromPasteboard:(NSPasteboard *)pboard
+{
+    if ([[pboard types] containsObject:NSStringPboardType])
+    {
+        NSString *text = [pboard stringForType:NSStringPboardType];
+        return [self replaceAccessibleTextSelection:text];
+    }
+
+    if ([[pboard types] containsObject:NSRTFDPboardType])
+    {
+        NSData *rtfdData = [pboard dataForType:NSRTFDPboardType];
+        NSAttributedString *styledText = [[NSAttributedString alloc] initWithRTFD:rtfdData documentAttributes:nil];
+        NSString *text = [styledText string];
+        [styledText release];
+
+        return [self replaceAccessibleTextSelection:text];
+    }
+
+    return NO;
+}
+
+
+-(void) setDragSource:(CDragSource *)source {
+    self._dragSource = source;
+}
+
+
+- (void) setDropTarget:(CDropTarget *)target {
+    self._dropTarget = target;
+    [ThreadUtilities performOnMainThread:@selector(controlModelControlValid) onObject:self._dropTarget withObject:nil waitUntilDone:YES awtMode:YES];
+}
+
+/********************************  BEGIN NSDraggingSource Interface  ********************************/
+
+- (NSDragOperation)draggingSourceOperationMaskForLocal:(BOOL)flag
+{
+    // If draggingSource is nil route the message to the superclass (if responding to the selector):
+    CDragSource *dragSource = self._dragSource;
+    NSDragOperation dragOp = NSDragOperationNone;
+
+    if (dragSource != nil)
+        dragOp = [dragSource draggingSourceOperationMaskForLocal:flag];
+    else if ([super respondsToSelector:@selector(draggingSourceOperationMaskForLocal:)])
+        dragOp = [super draggingSourceOperationMaskForLocal:flag];
+
+    return dragOp;
+}
+
+- (NSArray *)namesOfPromisedFilesDroppedAtDestination:(NSURL *)dropDestination
+{
+    // If draggingSource is nil route the message to the superclass (if responding to the selector):
+    CDragSource *dragSource = self._dragSource;
+    NSArray* array = nil;
+
+    if (dragSource != nil)
+        array = [dragSource namesOfPromisedFilesDroppedAtDestination:dropDestination];
+    else if ([super respondsToSelector:@selector(namesOfPromisedFilesDroppedAtDestination:)])
+        array = [super namesOfPromisedFilesDroppedAtDestination:dropDestination];
+
+    return array;
+}
+
+- (void)draggedImage:(NSImage *)image beganAt:(NSPoint)screenPoint
+{
+    // If draggingSource is nil route the message to the superclass (if responding to the selector):
+    CDragSource *dragSource = self._dragSource;
+
+    if (dragSource != nil)
+        [dragSource draggedImage:image beganAt:screenPoint];
+    else if ([super respondsToSelector:@selector(draggedImage::)])
+        [super draggedImage:image beganAt:screenPoint];
+}
+
+- (void)draggedImage:(NSImage *)image endedAt:(NSPoint)screenPoint operation:(NSDragOperation)operation
+{
+    // If draggingSource is nil route the message to the superclass (if responding to the selector):
+    CDragSource *dragSource = self._dragSource;
+
+    if (dragSource != nil)
+        [dragSource draggedImage:image endedAt:screenPoint operation:operation];
+    else if ([super respondsToSelector:@selector(draggedImage:::)])
+        [super draggedImage:image endedAt:screenPoint operation:operation];
+}
+
+- (void)draggedImage:(NSImage *)image movedTo:(NSPoint)screenPoint
+{
+    // If draggingSource is nil route the message to the superclass (if responding to the selector):
+    CDragSource *dragSource = self._dragSource;
+
+    if (dragSource != nil)
+        [dragSource draggedImage:image movedTo:screenPoint];
+    else if ([super respondsToSelector:@selector(draggedImage::)])
+        [super draggedImage:image movedTo:screenPoint];
+}
+
+- (BOOL)ignoreModifierKeysWhileDragging
+{
+    // If draggingSource is nil route the message to the superclass (if responding to the selector):
+    CDragSource *dragSource = self._dragSource;
+    BOOL result = FALSE;
+
+    if (dragSource != nil)
+        result = [dragSource ignoreModifierKeysWhileDragging];
+    else if ([super respondsToSelector:@selector(ignoreModifierKeysWhileDragging)])
+        result = [super ignoreModifierKeysWhileDragging];
+
+    return result;
+}
+
+/********************************  END NSDraggingSource Interface  ********************************/
+
+/********************************  BEGIN NSDraggingDestination Interface  ********************************/
+
+- (NSDragOperation)draggingEntered:(id <NSDraggingInfo>)sender
+{
+    // If draggingDestination is nil route the message to the superclass:
+    CDropTarget *dropTarget = self._dropTarget;
+    NSDragOperation dragOp = NSDragOperationNone;
+
+    if (dropTarget != nil)
+        dragOp = [dropTarget draggingEntered:sender];
+    else if ([super respondsToSelector:@selector(draggingEntered:)])
+        dragOp = [super draggingEntered:sender];
+
+    return dragOp;
+}
+
+- (NSDragOperation)draggingUpdated:(id <NSDraggingInfo>)sender
+{
+    // If draggingDestination is nil route the message to the superclass:
+    CDropTarget *dropTarget = self._dropTarget;
+    NSDragOperation dragOp = NSDragOperationNone;
+
+    if (dropTarget != nil)
+        dragOp = [dropTarget draggingUpdated:sender];
+    else if ([super respondsToSelector:@selector(draggingUpdated:)])
+        dragOp = [super draggingUpdated:sender];
+
+    return dragOp;
+}
+
+- (void)draggingExited:(id <NSDraggingInfo>)sender
+{
+    // If draggingDestination is nil route the message to the superclass:
+    CDropTarget *dropTarget = self._dropTarget;
+
+    if (dropTarget != nil)
+        [dropTarget draggingExited:sender];
+    else if ([super respondsToSelector:@selector(draggingExited:)])
+        [super draggingExited:sender];
+}
+
+- (BOOL)prepareForDragOperation:(id <NSDraggingInfo>)sender
+{
+    // If draggingDestination is nil route the message to the superclass:
+    CDropTarget *dropTarget = self._dropTarget;
+    BOOL result = FALSE;
+
+    if (dropTarget != nil)
+        result = [dropTarget prepareForDragOperation:sender];
+    else if ([super respondsToSelector:@selector(prepareForDragOperation:)])
+        result = [super prepareForDragOperation:sender];
+
+    return result;
+}
+
+- (BOOL)performDragOperation:(id <NSDraggingInfo>)sender
+{
+    // If draggingDestination is nil route the message to the superclass:
+    CDropTarget *dropTarget = self._dropTarget;
+    BOOL result = FALSE;
+
+    if (dropTarget != nil)
+        result = [dropTarget performDragOperation:sender];
+    else if ([super respondsToSelector:@selector(performDragOperation:)])
+        result = [super performDragOperation:sender];
+
+    return result;
+}
+
+- (void)concludeDragOperation:(id <NSDraggingInfo>)sender
+{
+    // If draggingDestination is nil route the message to the superclass:
+    CDropTarget *dropTarget = self._dropTarget;
+
+    if (dropTarget != nil)
+        [dropTarget concludeDragOperation:sender];
+    else if ([super respondsToSelector:@selector(concludeDragOperation:)])
+        [super concludeDragOperation:sender];
+}
+
+- (void)draggingEnded:(id <NSDraggingInfo>)sender
+{
+    // If draggingDestination is nil route the message to the superclass:
+    CDropTarget *dropTarget = self._dropTarget;
+
+    if (dropTarget != nil)
+        [dropTarget draggingEnded:sender];
+    else if ([super respondsToSelector:@selector(draggingEnded:)])
+        [super draggingEnded:sender];
+}
+
+/********************************  END NSDraggingDestination Interface  ********************************/
+
+/********************************  BEGIN NSTextInputClient Protocol  ********************************/
+
+
+JNF_CLASS_CACHE(jc_CInputMethod, "sun/lwawt/macosx/CInputMethod");
+
+- (void) insertText:(id)aString replacementRange:(NSRange)replacementRange
+{
+#ifdef IM_DEBUG
+    fprintf(stderr, "AWTView InputMethod Selector Called : [insertText]: %s\n", [aString UTF8String]);
+#endif // IM_DEBUG
+
+    if (fInputMethodLOCKABLE == NULL) {
+        return;
+    }
+
+    // Insert happens at the end of PAH
+    fInPressAndHold = NO;
+
+    // insertText gets called when the user commits text generated from an input method.  It also gets
+    // called during ordinary input as well.  We only need to send an input method event when we have marked
+    // text, or 'text in progress'.  We also need to send the event if we get an insert text out of the blue!
+    // (i.e., when the user uses the Character palette or Inkwell), or when the string to insert is a complex
+    // Unicode value.
+    NSUInteger utf8Length = [aString lengthOfBytesUsingEncoding:NSUTF8StringEncoding];
+
+    if ([self hasMarkedText] || !fProcessingKeystroke || (utf8Length > 2)) {
+        JNIEnv *env = [ThreadUtilities getJNIEnv];
+
+        static JNF_MEMBER_CACHE(jm_selectPreviousGlyph, jc_CInputMethod, "selectPreviousGlyph", "()V");
+        // We need to select the previous glyph so that it is overwritten.
+        if (fPAHNeedsToSelect) {
+            JNFCallVoidMethod(env, fInputMethodLOCKABLE, jm_selectPreviousGlyph);
+            fPAHNeedsToSelect = NO;
+        }
+
+        static JNF_MEMBER_CACHE(jm_insertText, jc_CInputMethod, "insertText", "(Ljava/lang/String;)V");
+        jstring insertedText =  JNFNSToJavaString(env, aString);
+        JNFCallVoidMethod(env, fInputMethodLOCKABLE, jm_insertText, insertedText); // AWT_THREADING Safe (AWTRunLoopMode)
+        (*env)->DeleteLocalRef(env, insertedText);
+
+        // The input method event will create psuedo-key events for each character in the committed string.
+        // We also don't want to send the character that triggered the insertText, usually a return. [3337563]
+        fKeyEventsNeeded = NO;
+    }
+
+    fPAHNeedsToSelect = NO;
+
+}
+
+- (void) doCommandBySelector:(SEL)aSelector
+{
+#ifdef IM_DEBUG
+    fprintf(stderr, "AWTView InputMethod Selector Called : [doCommandBySelector]\n");
+    NSLog(@"%@", NSStringFromSelector(aSelector));
+#endif // IM_DEBUG
+    if (@selector(insertNewline:) == aSelector || @selector(insertTab:) == aSelector || @selector(deleteBackward:) == aSelector)
+    {
+        fKeyEventsNeeded = YES;
+    }
+}
+
+// setMarkedText: cannot take a nil first argument. aString can be NSString or NSAttributedString
+- (void) setMarkedText:(id)aString selectedRange:(NSRange)selectionRange replacementRange:(NSRange)replacementRange
+{
+    if (!fInputMethodLOCKABLE)
+        return;
+
+    BOOL isAttributedString = [aString isKindOfClass:[NSAttributedString class]];
+    NSAttributedString *attrString = (isAttributedString ? (NSAttributedString *)aString : nil);
+    NSString *incomingString = (isAttributedString ? [aString string] : aString);
+#ifdef IM_DEBUG
+    fprintf(stderr, "AWTView InputMethod Selector Called : [setMarkedText] \"%s\", loc=%lu, length=%lu\n", [incomingString UTF8String], (unsigned long)selectionRange.location, (unsigned long)selectionRange.length);
+#endif // IM_DEBUG
+    static JNF_MEMBER_CACHE(jm_startIMUpdate, jc_CInputMethod, "startIMUpdate", "(Ljava/lang/String;)V");
+    static JNF_MEMBER_CACHE(jm_addAttribute, jc_CInputMethod, "addAttribute", "(ZZII)V");
+    static JNF_MEMBER_CACHE(jm_dispatchText, jc_CInputMethod, "dispatchText", "(IIZ)V");
+    JNIEnv *env = [ThreadUtilities getJNIEnv];
+
+    // NSInputContext already did the analysis of the TSM event and created attributes indicating
+    // the underlining and color that should be done to the string.  We need to look at the underline
+    // style and color to determine what kind of Java hilighting needs to be done.
+    jstring inProcessText = JNFNSToJavaString(env, incomingString);
+    JNFCallVoidMethod(env, fInputMethodLOCKABLE, jm_startIMUpdate, inProcessText); // AWT_THREADING Safe (AWTRunLoopMode)
+    (*env)->DeleteLocalRef(env, inProcessText);
+
+    if (isAttributedString) {
+        NSUInteger length;
+        NSRange effectiveRange;
+        NSDictionary *attributes;
+        length = [attrString length];
+        effectiveRange = NSMakeRange(0, 0);
+        while (NSMaxRange(effectiveRange) < length) {
+            attributes = [attrString attributesAtIndex:NSMaxRange(effectiveRange)
+                                        effectiveRange:&effectiveRange];
+            if (attributes) {
+                BOOL isThickUnderline, isGray;
+                NSNumber *underlineSizeObj =
+                (NSNumber *)[attributes objectForKey:NSUnderlineStyleAttributeName];
+                NSInteger underlineSize = [underlineSizeObj integerValue];
+                isThickUnderline = (underlineSize > 1);
+
+                NSColor *underlineColorObj =
+                (NSColor *)[attributes objectForKey:NSUnderlineColorAttributeName];
+                isGray = !([underlineColorObj isEqual:[NSColor blackColor]]);
+
+                JNFCallVoidMethod(env, fInputMethodLOCKABLE, jm_addAttribute, isThickUnderline, isGray, effectiveRange.location, effectiveRange.length); // AWT_THREADING Safe (AWTRunLoopMode)
+            }
+        }
+    }
+
+    static JNF_MEMBER_CACHE(jm_selectPreviousGlyph, jc_CInputMethod, "selectPreviousGlyph", "()V");
+    // We need to select the previous glyph so that it is overwritten.
+    if (fPAHNeedsToSelect) {
+        JNFCallVoidMethod(env, fInputMethodLOCKABLE, jm_selectPreviousGlyph);
+        fPAHNeedsToSelect = NO;
+    }
+
+    JNFCallVoidMethod(env, fInputMethodLOCKABLE, jm_dispatchText, selectionRange.location, selectionRange.length, JNI_FALSE); // AWT_THREADING Safe (AWTRunLoopMode)
+
+    // If the marked text is being cleared (zero-length string) don't handle the key event.
+    if ([incomingString length] == 0) {
+        fKeyEventsNeeded = NO;
+    }
+}
+
+- (void) unmarkText
+{
+#ifdef IM_DEBUG
+    fprintf(stderr, "AWTView InputMethod Selector Called : [unmarkText]\n");
+#endif // IM_DEBUG
+
+    if (!fInputMethodLOCKABLE) {
+        return;
+    }
+
+    // unmarkText cancels any input in progress and commits it to the text field.
+    static JNF_MEMBER_CACHE(jm_unmarkText, jc_CInputMethod, "unmarkText", "()V");
+    JNIEnv *env = [ThreadUtilities getJNIEnv];
+    JNFCallVoidMethod(env, fInputMethodLOCKABLE, jm_unmarkText); // AWT_THREADING Safe (AWTRunLoopMode)
+
+}
+
+- (BOOL) hasMarkedText
+{
+#ifdef IM_DEBUG
+    fprintf(stderr, "AWTView InputMethod Selector Called : [hasMarkedText]\n");
+#endif // IM_DEBUG
+
+    if (!fInputMethodLOCKABLE) {
+        return NO;
+    }
+
+    static JNF_MEMBER_CACHE(jf_fCurrentText, jc_CInputMethod, "fCurrentText", "Ljava/text/AttributedString;");
+    static JNF_MEMBER_CACHE(jf_fCurrentTextLength, jc_CInputMethod, "fCurrentTextLength", "I");
+    JNIEnv *env = [ThreadUtilities getJNIEnv];
+    jobject currentText = JNFGetObjectField(env, fInputMethodLOCKABLE, jf_fCurrentText);
+
+    jint currentTextLength = JNFGetIntField(env, fInputMethodLOCKABLE, jf_fCurrentTextLength);
+
+    BOOL hasMarkedText = (currentText != NULL && currentTextLength > 0);
+
+    if (currentText != NULL) {
+        (*env)->DeleteLocalRef(env, currentText);
+    }
+
+    return hasMarkedText;
+}
+
+- (NSInteger) conversationIdentifier
+{
+#ifdef IM_DEBUG
+    fprintf(stderr, "AWTView InputMethod Selector Called : [conversationIdentifier]\n");
+#endif // IM_DEBUG
+
+    return (NSInteger) self;
+}
+
+/* Returns attributed string at the range.  This allows input mangers to
+ query any range in backing-store (Andy's request)
+ */
+- (NSAttributedString *) attributedSubstringForProposedRange:(NSRange)theRange actualRange:(NSRangePointer)actualRange
+{
+#ifdef IM_DEBUG
+    fprintf(stderr, "AWTView InputMethod Selector Called : [attributedSubstringFromRange] location=%lu, length=%lu\n", (unsigned long)theRange.location, (unsigned long)theRange.length);
+#endif // IM_DEBUG
+
+    static JNF_MEMBER_CACHE(jm_substringFromRange, jc_CInputMethod, "attributedSubstringFromRange", "(II)Ljava/lang/String;");
+    JNIEnv *env = [ThreadUtilities getJNIEnv];
+    jobject theString = JNFCallObjectMethod(env, fInputMethodLOCKABLE, jm_substringFromRange, theRange.location, theRange.length); // AWT_THREADING Safe (AWTRunLoopMode)
+
+    id result = [[[NSAttributedString alloc] initWithString:JNFJavaToNSString(env, theString)] autorelease];
+#ifdef IM_DEBUG
+    NSLog(@"attributedSubstringFromRange returning \"%@\"", result);
+#endif // IM_DEBUG
+
+    (*env)->DeleteLocalRef(env, theString);
+    return result;
+}
+
+/* This method returns the range for marked region.  If hasMarkedText == false,
+ it'll return NSNotFound location & 0 length range.
+ */
+- (NSRange) markedRange
+{
+
+#ifdef IM_DEBUG
+    fprintf(stderr, "AWTView InputMethod Selector Called : [markedRange]\n");
+#endif // IM_DEBUG
+
+    if (!fInputMethodLOCKABLE) {
+        return NSMakeRange(NSNotFound, 0);
+    }
+
+    static JNF_MEMBER_CACHE(jm_markedRange, jc_CInputMethod, "markedRange", "()[I");
+    JNIEnv *env = [ThreadUtilities getJNIEnv];
+    jarray array;
+    jboolean isCopy;
+    jint *_array;
+    NSRange range;
+
+    array = JNFCallObjectMethod(env, fInputMethodLOCKABLE, jm_markedRange); // AWT_THREADING Safe (AWTRunLoopMode)
+
+    if (array) {
+        _array = (*env)->GetIntArrayElements(env, array, &isCopy);
+        range = NSMakeRange(_array[0], _array[1]);
+
+#ifdef IM_DEBUG
+        fprintf(stderr, "markedRange returning (%lu, %lu)\n", (unsigned long)range.location, (unsigned long)range.length);
+#endif // IM_DEBUG
+        (*env)->ReleaseIntArrayElements(env, array, _array, 0);
+        (*env)->DeleteLocalRef(env, array);
+    } else {
+        range = NSMakeRange(NSNotFound, 0);
+    }
+
+    return range;
+}
+
+/* This method returns the range for selected region.  Just like markedRange method,
+ its location field contains char index from the text beginning.
+ */
+- (NSRange) selectedRange
+{
+    if (!fInputMethodLOCKABLE) {
+        return NSMakeRange(NSNotFound, 0);
+    }
+
+    static JNF_MEMBER_CACHE(jm_selectedRange, jc_CInputMethod, "selectedRange", "()[I");
+    JNIEnv *env = [ThreadUtilities getJNIEnv];
+    jarray array;
+    jboolean isCopy;
+    jint *_array;
+    NSRange range;
+
+#ifdef IM_DEBUG
+    fprintf(stderr, "AWTView InputMethod Selector Called : [selectedRange]\n");
+#endif // IM_DEBUG
+
+    array = JNFCallObjectMethod(env, fInputMethodLOCKABLE, jm_selectedRange); // AWT_THREADING Safe (AWTRunLoopMode)
+    if (array) {
+        _array = (*env)->GetIntArrayElements(env, array, &isCopy);
+        range = NSMakeRange(_array[0], _array[1]);
+        (*env)->ReleaseIntArrayElements(env, array, _array, 0);
+        (*env)->DeleteLocalRef(env, array);
+    } else {
+        range = NSMakeRange(NSNotFound, 0);
+    }
+
+    return range;
+
+}
+
+/* This method returns the first frame of rects for theRange in screen coordindate system.
+ */
+- (NSRect) firstRectForCharacterRange:(NSRange)theRange actualRange:(NSRangePointer)actualRange
+{
+    if (!fInputMethodLOCKABLE) {
+        return NSMakeRect(0, 0, 0, 0);
+    }
+
+    static JNF_MEMBER_CACHE(jm_firstRectForCharacterRange, jc_CInputMethod,
+                            "firstRectForCharacterRange", "(I)[I");
+    JNIEnv *env = [ThreadUtilities getJNIEnv];
+    jarray array;
+    jboolean isCopy;
+    jint *_array;
+    NSRect rect;
+
+#ifdef IM_DEBUG
+    fprintf(stderr, "AWTView InputMethod Selector Called : [firstRectForCharacterRange:] location=%lu, length=%lu\n", (unsigned long)theRange.location, (unsigned long)theRange.length);
+#endif // IM_DEBUG
+
+    array = JNFCallObjectMethod(env, fInputMethodLOCKABLE, jm_firstRectForCharacterRange, theRange.location); // AWT_THREADING Safe (AWTRunLoopMode)
+
+    _array = (*env)->GetIntArrayElements(env, array, &isCopy);
+    rect = ConvertNSScreenRect(env, NSMakeRect(_array[0], _array[1], _array[2], _array[3]));
+    (*env)->ReleaseIntArrayElements(env, array, _array, 0);
+    (*env)->DeleteLocalRef(env, array);
+
+#ifdef IM_DEBUG
+    fprintf(stderr, "firstRectForCharacterRange returning x=%f, y=%f, width=%f, height=%f\n", rect.origin.x, rect.origin.y, rect.size.width, rect.size.height);
+#endif // IM_DEBUG
+    return rect;
+}
+
+/* This method returns the index for character that is nearest to thePoint.  thPoint is in
+ screen coordinate system.
+ */
+- (NSUInteger)characterIndexForPoint:(NSPoint)thePoint
+{
+    if (!fInputMethodLOCKABLE) {
+        return NSNotFound;
+    }
+
+    static JNF_MEMBER_CACHE(jm_characterIndexForPoint, jc_CInputMethod,
+                            "characterIndexForPoint", "(II)I");
+    JNIEnv *env = [ThreadUtilities getJNIEnv];
+
+    NSPoint flippedLocation = ConvertNSScreenPoint(env, thePoint);
+
+#ifdef IM_DEBUG
+    fprintf(stderr, "AWTView InputMethod Selector Called : [characterIndexForPoint:(NSPoint)thePoint] x=%f, y=%f\n", flippedLocation.x, flippedLocation.y);
+#endif // IM_DEBUG
+
+    jint index = JNFCallIntMethod(env, fInputMethodLOCKABLE, jm_characterIndexForPoint, (jint)flippedLocation.x, (jint)flippedLocation.y); // AWT_THREADING Safe (AWTRunLoopMode)
+
+#ifdef IM_DEBUG
+    fprintf(stderr, "characterIndexForPoint returning %ld\n", index);
+#endif // IM_DEBUG
+
+    if (index == -1) {
+        return NSNotFound;
+    } else {
+        return (NSUInteger)index;
+    }
+}
+
+- (NSArray*) validAttributesForMarkedText
+{
+#ifdef IM_DEBUG
+    fprintf(stderr, "AWTView InputMethod Selector Called : [validAttributesForMarkedText]\n");
+#endif // IM_DEBUG
+
+    return [NSArray array];
+}
+
+- (void)setInputMethod:(jobject)inputMethod
+{
+#ifdef IM_DEBUG
+    fprintf(stderr, "AWTView InputMethod Selector Called : [setInputMethod]\n");
+#endif // IM_DEBUG
+
+    JNIEnv *env = [ThreadUtilities getJNIEnv];
+
+    // Get rid of the old one
+    if (fInputMethodLOCKABLE) {
+        JNFDeleteGlobalRef(env, fInputMethodLOCKABLE);
+    }
+
+    // Save a global ref to the new input method.
+    if (inputMethod != NULL)
+        fInputMethodLOCKABLE = JNFNewGlobalRef(env, inputMethod);
+    else
+        fInputMethodLOCKABLE = NULL;
+}
+
+- (void)abandonInput
+{
+#ifdef IM_DEBUG
+    fprintf(stderr, "AWTView InputMethod Selector Called : [abandonInput]\n");
+#endif // IM_DEBUG
+
+    [ThreadUtilities performOnMainThread:@selector(markedTextAbandoned:) onObject:[NSInputManager currentInputManager] withObject:self waitUntilDone:YES awtMode:YES];
+    [self unmarkText];
+}
+
+/********************************   END NSTextInputClient Protocol   ********************************/
+
+
+
+
+@end // AWTView
+
+/*
+ * Class:     sun_lwawt_macosx_CPlatformView
+ * Method:    nativeCreateView
+ * Signature: (IIII)J
+ */
+JNIEXPORT jlong JNICALL
+Java_sun_lwawt_macosx_CPlatformView_nativeCreateView
+(JNIEnv *env, jobject obj, jint originX, jint originY, jint width, jint height, jlong windowLayerPtr)
+{
+    __block AWTView *newView = nil;
+
+JNF_COCOA_ENTER(env);
+AWT_ASSERT_NOT_APPKIT_THREAD;
+
+    NSRect rect = NSMakeRect(originX, originY, width, height);
+    jobject cPlatformView = (*env)->NewGlobalRef(env, obj);
+
+    [JNFRunLoop performOnMainThreadWaiting:YES withBlock:^(){
+        AWT_ASSERT_APPKIT_THREAD;
+
+        CALayer *windowLayer = jlong_to_ptr(windowLayerPtr);
+        AWTView *view = [[AWTView alloc] initWithRect:rect
+                                         platformView:cPlatformView
+                                         windowLayer:windowLayer];
+        CFRetain(view);
+        [view release]; // GC
+
+        newView = view;
+    }];
+
+JNF_COCOA_EXIT(env);
+
+    return ptr_to_jlong(newView);
+}