AWTWindow.m

/*
 * Copyright (c) 2011, 2013, 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 <Cocoa/Cocoa.h>
#import <JavaNativeFoundation/JavaNativeFoundation.h>
#import <JavaRuntimeSupport/JavaRuntimeSupport.h>

#import "sun_lwawt_macosx_CPlatformWindow.h"
#import "com_apple_eawt_event_GestureHandler.h"
#import "com_apple_eawt_FullScreenHandler.h"
#import "ApplicationDelegate.h"

#import "AWTWindow.h"
#import "AWTView.h"
#import "CMenu.h"
#import "CMenuBar.h"
#import "LWCToolkit.h"
#import "GeomUtilities.h"
#import "ThreadUtilities.h"
#import "OSVersion.h"

#define MASK(KEY) \
    (sun_lwawt_macosx_CPlatformWindow_ ## KEY)

#define IS(BITS, KEY) \
    ((BITS & MASK(KEY)) != 0)

#define SET(BITS, KEY, VALUE) \
    BITS = VALUE ? BITS | MASK(KEY) : BITS & ~MASK(KEY)

static JNF_CLASS_CACHE(jc_CPlatformWindow, "sun/lwawt/macosx/CPlatformWindow");

// Cocoa windowDidBecomeKey/windowDidResignKey notifications
// doesn't provide information about "opposite" window, so we
// have to do a bit of tracking. This variable points to a window
// which had been the key window just before a new key window
// was set. It would be nil if the new key window isn't an AWT
// window or the app currently has no key window.
static AWTWindow* lastKeyWindow = nil;

// --------------------------------------------------------------
// NSWindow/NSPanel descendants implementation
#define AWT_NS_WINDOW_IMPLEMENTATION                            \
- (id) initWithDelegate:(AWTWindow *)delegate                   \
              frameRect:(NSRect)contectRect                     \
              styleMask:(NSUInteger)styleMask                   \
            contentView:(NSView *)view                          \
{                                                               \
    self = [super initWithContentRect:contectRect               \
                            styleMask:styleMask                 \
                              backing:NSBackingStoreBuffered    \
                                defer:NO];                      \
                                                                \
    if (self == nil) return nil;                                \
                                                                \
    [self setDelegate:delegate];                                \
    [self setContentView:view];                                 \
    [self setInitialFirstResponder:view];                       \
    [self setReleasedWhenClosed:NO];                            \
    [self setPreservesContentDuringLiveResize:YES];             \
                                                                \
    return self;                                                \
}                                                               \
                                                                \
/* NSWindow overrides */                                        \
- (BOOL) canBecomeKeyWindow {                                   \
    return [(AWTWindow*)[self delegate] canBecomeKeyWindow];    \
}                                                               \
                                                                \
- (BOOL) canBecomeMainWindow {                                  \
    return [(AWTWindow*)[self delegate] canBecomeMainWindow];   \
}                                                               \
                                                                \
- (BOOL) worksWhenModal {                                       \
    return [(AWTWindow*)[self delegate] worksWhenModal];        \
}                                                               \
                                                                \
- (void)sendEvent:(NSEvent *)event {                            \
    [(AWTWindow*)[self delegate] sendEvent:event];              \
    [super sendEvent:event];                                    \
}

@implementation AWTWindow_Normal
AWT_NS_WINDOW_IMPLEMENTATION
@end
@implementation AWTWindow_Panel
AWT_NS_WINDOW_IMPLEMENTATION
@end
// END of NSWindow/NSPanel descendants implementation
// --------------------------------------------------------------


@implementation AWTWindow

@synthesize nsWindow;
@synthesize javaPlatformWindow;
@synthesize javaMenuBar;
@synthesize javaMinSize;
@synthesize javaMaxSize;
@synthesize styleBits;
@synthesize isEnabled;
@synthesize ownerWindow;
@synthesize preFullScreenLevel;

- (void) updateMinMaxSize:(BOOL)resizable {
    if (resizable) {
        [self.nsWindow setMinSize:self.javaMinSize];
        [self.nsWindow setMaxSize:self.javaMaxSize];
    } else {
        NSRect currentFrame = [self.nsWindow frame];
        [self.nsWindow setMinSize:currentFrame.size];
        [self.nsWindow setMaxSize:currentFrame.size];
    }
}

// creates a new NSWindow style mask based on the _STYLE_PROP_BITMASK bits
+ (NSUInteger) styleMaskForStyleBits:(jint)styleBits {
    NSUInteger type = 0;
    if (IS(styleBits, DECORATED)) {
        type |= NSTitledWindowMask;
        if (IS(styleBits, CLOSEABLE))   type |= NSClosableWindowMask;
        if (IS(styleBits, MINIMIZABLE)) type |= NSMiniaturizableWindowMask;
        if (IS(styleBits, RESIZABLE))   type |= NSResizableWindowMask;
    } else {
        type |= NSBorderlessWindowMask;
    }

    if (IS(styleBits, TEXTURED))      type |= NSTexturedBackgroundWindowMask;
    if (IS(styleBits, UNIFIED))       type |= NSUnifiedTitleAndToolbarWindowMask;
    if (IS(styleBits, UTILITY))       type |= NSUtilityWindowMask;
    if (IS(styleBits, HUD))           type |= NSHUDWindowMask;
    if (IS(styleBits, SHEET))         type |= NSDocModalWindowMask;
    if (IS(styleBits, NONACTIVATING)) type |= NSNonactivatingPanelMask;

    return type;
}

// updates _METHOD_PROP_BITMASK based properties on the window
- (void) setPropertiesForStyleBits:(jint)bits mask:(jint)mask {
    if (IS(mask, RESIZABLE)) {
        BOOL resizable = IS(bits, RESIZABLE);
        [self updateMinMaxSize:resizable];
        [self.nsWindow setShowsResizeIndicator:resizable];
        // Zoom button should be disabled, if the window is not resizable,
        // otherwise button should be restored to initial state.
        BOOL zoom = resizable && IS(bits, ZOOMABLE);
        [[self.nsWindow standardWindowButton:NSWindowZoomButton] setEnabled:zoom];
    }

    if (IS(mask, HAS_SHADOW)) {
        [self.nsWindow setHasShadow:IS(bits, HAS_SHADOW)];
    }

    if (IS(mask, ZOOMABLE)) {
        [[self.nsWindow standardWindowButton:NSWindowZoomButton] setEnabled:IS(bits, ZOOMABLE)];
    }

    if (IS(mask, ALWAYS_ON_TOP)) {
        [self.nsWindow setLevel:IS(bits, ALWAYS_ON_TOP) ? NSFloatingWindowLevel : NSNormalWindowLevel];
    }

    if (IS(mask, HIDES_ON_DEACTIVATE)) {
        [self.nsWindow setHidesOnDeactivate:IS(bits, HIDES_ON_DEACTIVATE)];
    }

    if (IS(mask, DRAGGABLE_BACKGROUND)) {
        [self.nsWindow setMovableByWindowBackground:IS(bits, DRAGGABLE_BACKGROUND)];
    }

    if (IS(mask, DOCUMENT_MODIFIED)) {
        [self.nsWindow setDocumentEdited:IS(bits, DOCUMENT_MODIFIED)];
    }

    if (IS(mask, FULLSCREENABLE) && [self.nsWindow respondsToSelector:@selector(toggleFullScreen:)]) {
        if (IS(bits, FULLSCREENABLE)) {
            [self.nsWindow setCollectionBehavior:(1 << 7) /*NSWindowCollectionBehaviorFullScreenPrimary*/];
        } else {
            [self.nsWindow setCollectionBehavior:NSWindowCollectionBehaviorDefault];
        }
    }

}

- (id) initWithPlatformWindow:(JNFWeakJObjectWrapper *)platformWindow
                  ownerWindow:owner
                    styleBits:(jint)bits
                    frameRect:(NSRect)rect
                  contentView:(NSView *)view
{
AWT_ASSERT_APPKIT_THREAD;

    NSUInteger styleMask = [AWTWindow styleMaskForStyleBits:bits];
    NSRect contentRect = rect; //[NSWindow contentRectForFrameRect:rect styleMask:styleMask];
    if (contentRect.size.width <= 0.0) {
        contentRect.size.width = 1.0;
    }
    if (contentRect.size.height <= 0.0) {
        contentRect.size.height = 1.0;
    }

    self = [super init];

    if (self == nil) return nil; // no hope

    if (IS(bits, UTILITY) ||
        IS(bits, NONACTIVATING) ||
        IS(bits, HUD) ||
        IS(bits, HIDES_ON_DEACTIVATE))
    {
        self.nsWindow = [[AWTWindow_Panel alloc] initWithDelegate:self
                            frameRect:contentRect
                            styleMask:styleMask
                          contentView:view];
    }
    else
    {
        // These windows will appear in the window list in the dock icon menu
        self.nsWindow = [[AWTWindow_Normal alloc] initWithDelegate:self
                            frameRect:contentRect
                            styleMask:styleMask
                          contentView:view];
    }

    if (self.nsWindow == nil) return nil; // no hope either
    [self.nsWindow release]; // the property retains the object already

    self.isEnabled = YES;
    self.javaPlatformWindow = platformWindow;
    self.styleBits = bits;
    self.ownerWindow = owner;
    [self setPropertiesForStyleBits:styleBits mask:MASK(_METHOD_PROP_BITMASK)];

    return self;
}

+ (BOOL) isAWTWindow:(NSWindow *)window {
    return [window isKindOfClass: [AWTWindow_Panel class]] || [window isKindOfClass: [AWTWindow_Normal class]];
}

// returns id for the topmost window under mouse
+ (NSInteger) getTopmostWindowUnderMouseID {
    NSInteger result = -1;
    
    NSRect screenRect = [[NSScreen mainScreen] frame];
    NSPoint nsMouseLocation = [NSEvent mouseLocation];
    CGPoint cgMouseLocation = CGPointMake(nsMouseLocation.x, screenRect.size.height - nsMouseLocation.y);

    NSMutableArray *windows = (NSMutableArray *)CGWindowListCopyWindowInfo(kCGWindowListOptionOnScreenOnly | kCGWindowListExcludeDesktopElements, kCGNullWindowID);

    for (NSDictionary *window in windows) {
        NSInteger layer = [[window objectForKey:(id)kCGWindowLayer] integerValue];
        if (layer == 0) {
            CGRect rect;
            CGRectMakeWithDictionaryRepresentation((CFDictionaryRef)[window objectForKey:(id)kCGWindowBounds], &rect);
            if (CGRectContainsPoint(rect, cgMouseLocation)) {
                result = [[window objectForKey:(id)kCGWindowNumber] integerValue];
                break;
            }
        }
    }
    [windows release];
    return result;
}

// checks that this window is under the mouse cursor and this point is not overlapped by others windows
- (BOOL) isTopmostWindowUnderMouse {
    return [self.nsWindow windowNumber] == [AWTWindow getTopmostWindowUnderMouseID];
}

+ (AWTWindow *) getTopmostWindowUnderMouse {
    NSEnumerator *windowEnumerator = [[NSApp windows] objectEnumerator];
    NSWindow *window;

    NSInteger topmostWindowUnderMouseID = [AWTWindow getTopmostWindowUnderMouseID];

    while ((window = [windowEnumerator nextObject]) != nil) {
        if ([window windowNumber] == topmostWindowUnderMouseID) {
            BOOL isAWTWindow = [AWTWindow isAWTWindow: window];
            return isAWTWindow ? (AWTWindow *) [window delegate] : nil;
        }
    }
    return nil;
}

+ (void) synthesizeMouseEnteredExitedEvents:(NSWindow*)window withType:(NSEventType)eventType {

    NSPoint screenLocation = [NSEvent mouseLocation];
    NSPoint windowLocation = [window convertScreenToBase: screenLocation];
    int modifierFlags = (eventType == NSMouseEntered) ? NSMouseEnteredMask : NSMouseExitedMask;

    NSEvent *mouseEvent = [NSEvent enterExitEventWithType: eventType
                                                 location: windowLocation
                                            modifierFlags: modifierFlags
                                                timestamp: 0
                                             windowNumber: [window windowNumber]
                                                  context: nil
                                              eventNumber: 0
                                           trackingNumber: 0
                                                 userData: nil
                           ];

    [[window contentView] deliverJavaMouseEvent: mouseEvent];
}

+ (void) synthesizeMouseEnteredExitedEventsForAllWindows {

    NSInteger topmostWindowUnderMouseID = [AWTWindow getTopmostWindowUnderMouseID];
    NSArray *windows = [NSApp windows];
    NSWindow *window;

    NSEnumerator *windowEnumerator = [windows objectEnumerator];
    while ((window = [windowEnumerator nextObject]) != nil) {
        if ([AWTWindow isAWTWindow: window]) {
            BOOL isUnderMouse = ([window windowNumber] == topmostWindowUnderMouseID);
            BOOL mouseIsOver = [[window contentView] mouseIsOver];
            if (isUnderMouse && !mouseIsOver) {
                [AWTWindow synthesizeMouseEnteredExitedEvents:window withType:NSMouseEntered];
            } else if (!isUnderMouse && mouseIsOver) {
                [AWTWindow synthesizeMouseEnteredExitedEvents:window withType:NSMouseExited];
            }
        }
    }
}

+ (NSNumber *) getNSWindowDisplayID_AppKitThread:(NSWindow *)window {
    AWT_ASSERT_APPKIT_THREAD;
    NSScreen *screen = [window screen];
    NSDictionary *deviceDescription = [screen deviceDescription];
    return [deviceDescription objectForKey:@"NSScreenNumber"];
}

- (void) dealloc {
AWT_ASSERT_APPKIT_THREAD;

    JNIEnv *env = [ThreadUtilities getJNIEnvUncached];
    [self.javaPlatformWindow setJObject:nil withEnv:env];

    self.nsWindow = nil;
    self.ownerWindow = nil;
    [super dealloc];
}

// NSWindow overrides
- (BOOL) canBecomeKeyWindow {
AWT_ASSERT_APPKIT_THREAD;
    return self.isEnabled && IS(self.styleBits, SHOULD_BECOME_KEY);
}

- (BOOL) canBecomeMainWindow {
AWT_ASSERT_APPKIT_THREAD;
    if (!self.isEnabled) {
        // Native system can bring up the NSWindow to
        // the top even if the window is not main.
        // We should bring up the modal dialog manually
        [AWTToolkit eventCountPlusPlus];

        JNIEnv *env = [ThreadUtilities getJNIEnv];
        jobject platformWindow = [self.javaPlatformWindow jObjectWithEnv:env];
        if (platformWindow != NULL) {
            static JNF_MEMBER_CACHE(jm_checkBlockingAndOrder, jc_CPlatformWindow,
                                    "checkBlockingAndOrder", "()Z");
            JNFCallBooleanMethod(env, platformWindow, jm_checkBlockingAndOrder);
            (*env)->DeleteLocalRef(env, platformWindow);
        }
    }

    return self.isEnabled && IS(self.styleBits, SHOULD_BECOME_MAIN);
}

- (BOOL) worksWhenModal {
AWT_ASSERT_APPKIT_THREAD;
    return IS(self.styleBits, MODAL_EXCLUDED);
}


// Gesture support
- (void)postGesture:(NSEvent *)event as:(jint)type a:(jdouble)a b:(jdouble)b {
AWT_ASSERT_APPKIT_THREAD;

    JNIEnv *env = [ThreadUtilities getJNIEnv];
    jobject platformWindow = [self.javaPlatformWindow jObjectWithEnv:env];
    if (platformWindow != NULL) {
        // extract the target AWT Window object out of the CPlatformWindow
        static JNF_MEMBER_CACHE(jf_target, jc_CPlatformWindow, "target", "Ljava/awt/Window;");
        jobject awtWindow = JNFGetObjectField(env, platformWindow, jf_target);
        if (awtWindow != NULL) {
            // translate the point into Java coordinates
            NSPoint loc = [event locationInWindow];
            loc.y = [self.nsWindow frame].size.height - loc.y;

            // send up to the GestureHandler to recursively dispatch on the AWT event thread
            static JNF_CLASS_CACHE(jc_GestureHandler, "com/apple/eawt/event/GestureHandler");
            static JNF_STATIC_MEMBER_CACHE(sjm_handleGestureFromNative, jc_GestureHandler, "handleGestureFromNative", "(Ljava/awt/Window;IDDDD)V");
            JNFCallStaticVoidMethod(env, sjm_handleGestureFromNative, awtWindow, type, (jdouble)loc.x, (jdouble)loc.y, (jdouble)a, (jdouble)b);
            (*env)->DeleteLocalRef(env, awtWindow);
        }
        (*env)->DeleteLocalRef(env, platformWindow);
    }
}

- (void)beginGestureWithEvent:(NSEvent *)event {
    [self postGesture:event
                   as:com_apple_eawt_event_GestureHandler_PHASE
                    a:-1.0
                    b:0.0];
}

- (void)endGestureWithEvent:(NSEvent *)event {
    [self postGesture:event
                   as:com_apple_eawt_event_GestureHandler_PHASE
                    a:1.0
                    b:0.0];
}

- (void)magnifyWithEvent:(NSEvent *)event {
    [self postGesture:event
                   as:com_apple_eawt_event_GestureHandler_MAGNIFY
                    a:[event magnification]
                    b:0.0];
}

- (void)rotateWithEvent:(NSEvent *)event {
    [self postGesture:event
                   as:com_apple_eawt_event_GestureHandler_ROTATE
                    a:[event rotation]
                    b:0.0];
}

- (void)swipeWithEvent:(NSEvent *)event {
    [self postGesture:event
                   as:com_apple_eawt_event_GestureHandler_SWIPE
                    a:[event deltaX]
                    b:[event deltaY]];
}


// NSWindowDelegate methods

- (void) _deliverMoveResizeEvent {
AWT_ASSERT_APPKIT_THREAD;

    // deliver the event if this is a user-initiated live resize or as a side-effect
    // of a Java initiated resize, because AppKit can override the bounds and force
    // the bounds of the window to avoid the Dock or remain on screen.
    [AWTToolkit eventCountPlusPlus];
    JNIEnv *env = [ThreadUtilities getJNIEnv];
    jobject platformWindow = [self.javaPlatformWindow jObjectWithEnv:env];
    if (platformWindow == NULL) {
        // TODO: create generic AWT assert
    }

    NSRect frame = ConvertNSScreenRect(env, [self.nsWindow frame]);

    static JNF_MEMBER_CACHE(jm_deliverMoveResizeEvent, jc_CPlatformWindow, "deliverMoveResizeEvent", "(IIIIZ)V");
    JNFCallVoidMethod(env, platformWindow, jm_deliverMoveResizeEvent,
                      (jint)frame.origin.x,
                      (jint)frame.origin.y,
                      (jint)frame.size.width,
                      (jint)frame.size.height,
                      (jboolean)[self.nsWindow inLiveResize]);
    (*env)->DeleteLocalRef(env, platformWindow);

    [AWTWindow synthesizeMouseEnteredExitedEventsForAllWindows];
}

- (void)windowDidMove:(NSNotification *)notification {
AWT_ASSERT_APPKIT_THREAD;

    [self _deliverMoveResizeEvent];
}

- (void)windowDidResize:(NSNotification *)notification {
AWT_ASSERT_APPKIT_THREAD;

    [self _deliverMoveResizeEvent];
}

- (void)windowDidExpose:(NSNotification *)notification {
AWT_ASSERT_APPKIT_THREAD;

    [AWTToolkit eventCountPlusPlus];
    // TODO: don't see this callback invoked anytime so we track
    // window exposing in _setVisible:(BOOL)
}

- (void) _deliverIconify:(BOOL)iconify {
AWT_ASSERT_APPKIT_THREAD;

    [AWTToolkit eventCountPlusPlus];
    JNIEnv *env = [ThreadUtilities getJNIEnv];
    jobject platformWindow = [self.javaPlatformWindow jObjectWithEnv:env];
    if (platformWindow != NULL) {
        static JNF_MEMBER_CACHE(jm_deliverIconify, jc_CPlatformWindow, "deliverIconify", "(Z)V");
        JNFCallVoidMethod(env, platformWindow, jm_deliverIconify, iconify);
        (*env)->DeleteLocalRef(env, platformWindow);
    }
}

- (void)windowDidMiniaturize:(NSNotification *)notification {
AWT_ASSERT_APPKIT_THREAD;

    [self _deliverIconify:JNI_TRUE];
}

- (void)windowDidDeminiaturize:(NSNotification *)notification {
AWT_ASSERT_APPKIT_THREAD;

    [self _deliverIconify:JNI_FALSE];
}

- (void) _deliverWindowFocusEvent:(BOOL)focused oppositeWindow:(AWTWindow *)opposite {
//AWT_ASSERT_APPKIT_THREAD;
    JNIEnv *env = [ThreadUtilities getJNIEnvUncached];
    jobject platformWindow = [self.javaPlatformWindow jObjectWithEnv:env];
    if (platformWindow != NULL) {
        jobject oppositeWindow = [opposite.javaPlatformWindow jObjectWithEnv:env];

        static JNF_MEMBER_CACHE(jm_deliverWindowFocusEvent, jc_CPlatformWindow, "deliverWindowFocusEvent", "(ZLsun/lwawt/macosx/CPlatformWindow;)V");
        JNFCallVoidMethod(env, platformWindow, jm_deliverWindowFocusEvent, (jboolean)focused, oppositeWindow);
        (*env)->DeleteLocalRef(env, platformWindow);
        (*env)->DeleteLocalRef(env, oppositeWindow);
    }
}


- (void) windowDidBecomeKey: (NSNotification *) notification {
AWT_ASSERT_APPKIT_THREAD;
    [AWTToolkit eventCountPlusPlus];
    AWTWindow *opposite = [AWTWindow lastKeyWindow];

    // Finds appropriate menubar in our hierarchy,
    AWTWindow *awtWindow = self;
    while (awtWindow.ownerWindow != nil) {
        awtWindow = awtWindow.ownerWindow;
    }

    CMenuBar *menuBar = nil;
    BOOL isDisabled = NO;
    if ([awtWindow.nsWindow isVisible]){
        menuBar = awtWindow.javaMenuBar;
        isDisabled = !awtWindow.isEnabled;
    }

    if (menuBar == nil) {
        menuBar = [[ApplicationDelegate sharedDelegate] defaultMenuBar];
        isDisabled = NO;
    }

    [CMenuBar activate:menuBar modallyDisabled:isDisabled];

    [AWTWindow setLastKeyWindow:nil];

    [self _deliverWindowFocusEvent:YES oppositeWindow: opposite];
}

- (void) windowDidResignKey: (NSNotification *) notification {
    // TODO: check why sometimes at start is invoked *not* on AppKit main thread.
AWT_ASSERT_APPKIT_THREAD;
    [AWTToolkit eventCountPlusPlus];
    [self.javaMenuBar deactivate];

    // In theory, this might cause flickering if the window gaining focus
    // has its own menu. However, I couldn't reproduce it on practice, so
    // perhaps this is a non issue.
    CMenuBar* defaultMenu = [[ApplicationDelegate sharedDelegate] defaultMenuBar];
    if (defaultMenu != nil) {
        [CMenuBar activate:defaultMenu modallyDisabled:NO];
    }

    // the new key window
    NSWindow *keyWindow = [NSApp keyWindow];
    AWTWindow *opposite = nil;
    if ([AWTWindow isAWTWindow: keyWindow]) {
        opposite = (AWTWindow *)[keyWindow delegate];
        [AWTWindow setLastKeyWindow: self];
    } else {
        [AWTWindow setLastKeyWindow: nil];
    }

    [self _deliverWindowFocusEvent:NO oppositeWindow: opposite];
}

- (void) windowDidBecomeMain: (NSNotification *) notification {
AWT_ASSERT_APPKIT_THREAD;
    [AWTToolkit eventCountPlusPlus];

    JNIEnv *env = [ThreadUtilities getJNIEnv];
    jobject platformWindow = [self.javaPlatformWindow jObjectWithEnv:env];
    if (platformWindow != NULL) {
        static JNF_MEMBER_CACHE(jm_windowDidBecomeMain, jc_CPlatformWindow, "windowDidBecomeMain", "()V");
        JNFCallVoidMethod(env, platformWindow, jm_windowDidBecomeMain);
        (*env)->DeleteLocalRef(env, platformWindow);
    }
}

- (BOOL)windowShouldClose:(id)sender {
AWT_ASSERT_APPKIT_THREAD;
    [AWTToolkit eventCountPlusPlus];
    JNIEnv *env = [ThreadUtilities getJNIEnv];
    jobject platformWindow = [self.javaPlatformWindow jObjectWithEnv:env];
    if (platformWindow != NULL) {
        static JNF_MEMBER_CACHE(jm_deliverWindowClosingEvent, jc_CPlatformWindow, "deliverWindowClosingEvent", "()V");
        JNFCallVoidMethod(env, platformWindow, jm_deliverWindowClosingEvent);
        (*env)->DeleteLocalRef(env, platformWindow);
    }
    // The window will be closed (if allowed) as result of sending Java event
    return NO;
}


- (void)_notifyFullScreenOp:(jint)op withEnv:(JNIEnv *)env {
    static JNF_CLASS_CACHE(jc_FullScreenHandler, "com/apple/eawt/FullScreenHandler");
    static JNF_STATIC_MEMBER_CACHE(jm_notifyFullScreenOperation, jc_FullScreenHandler, "handleFullScreenEventFromNative", "(Ljava/awt/Window;I)V");
    static JNF_MEMBER_CACHE(jf_target, jc_CPlatformWindow, "target", "Ljava/awt/Window;");
    jobject platformWindow = [self.javaPlatformWindow jObjectWithEnv:env];
    if (platformWindow != NULL) {
        jobject awtWindow = JNFGetObjectField(env, platformWindow, jf_target);
        if (awtWindow != NULL) {
            JNFCallStaticVoidMethod(env, jm_notifyFullScreenOperation, awtWindow, op);
            (*env)->DeleteLocalRef(env, awtWindow);
        }
        (*env)->DeleteLocalRef(env, platformWindow);
    }
}


- (void)windowWillEnterFullScreen:(NSNotification *)notification {
    static JNF_MEMBER_CACHE(jm_windowWillEnterFullScreen, jc_CPlatformWindow, "windowWillEnterFullScreen", "()V");
    JNIEnv *env = [ThreadUtilities getJNIEnv];
    jobject platformWindow = [self.javaPlatformWindow jObjectWithEnv:env];
    if (platformWindow != NULL) {
        JNFCallVoidMethod(env, platformWindow, jm_windowWillEnterFullScreen);
        [self _notifyFullScreenOp:com_apple_eawt_FullScreenHandler_FULLSCREEN_WILL_ENTER withEnv:env];
        (*env)->DeleteLocalRef(env, platformWindow);
    }
}

- (void)windowDidEnterFullScreen:(NSNotification *)notification {
    static JNF_MEMBER_CACHE(jm_windowDidEnterFullScreen, jc_CPlatformWindow, "windowDidEnterFullScreen", "()V");
    JNIEnv *env = [ThreadUtilities getJNIEnv];
    jobject platformWindow = [self.javaPlatformWindow jObjectWithEnv:env];
    if (platformWindow != NULL) {
        JNFCallVoidMethod(env, platformWindow, jm_windowDidEnterFullScreen);
        [self _notifyFullScreenOp:com_apple_eawt_FullScreenHandler_FULLSCREEN_DID_ENTER withEnv:env];
        (*env)->DeleteLocalRef(env, platformWindow);
    }
    [AWTWindow synthesizeMouseEnteredExitedEventsForAllWindows];
}

- (void)windowWillExitFullScreen:(NSNotification *)notification {
    static JNF_MEMBER_CACHE(jm_windowWillExitFullScreen, jc_CPlatformWindow, "windowWillExitFullScreen", "()V");
    JNIEnv *env = [ThreadUtilities getJNIEnv];
    jobject platformWindow = [self.javaPlatformWindow jObjectWithEnv:env];
    if (platformWindow != NULL) {
        JNFCallVoidMethod(env, platformWindow, jm_windowWillExitFullScreen);
        [self _notifyFullScreenOp:com_apple_eawt_FullScreenHandler_FULLSCREEN_WILL_EXIT withEnv:env];
        (*env)->DeleteLocalRef(env, platformWindow);
    }
}

- (void)windowDidExitFullScreen:(NSNotification *)notification {
    static JNF_MEMBER_CACHE(jm_windowDidExitFullScreen, jc_CPlatformWindow, "windowDidExitFullScreen", "()V");
    JNIEnv *env = [ThreadUtilities getJNIEnv];
    jobject platformWindow = [self.javaPlatformWindow jObjectWithEnv:env];
    if (platformWindow != NULL) {
        JNFCallVoidMethod(env, platformWindow, jm_windowDidExitFullScreen);
        [self _notifyFullScreenOp:com_apple_eawt_FullScreenHandler_FULLSCREEN_DID_EXIT withEnv:env];
        (*env)->DeleteLocalRef(env, platformWindow);
    }
    [AWTWindow synthesizeMouseEnteredExitedEventsForAllWindows];
}

- (void)sendEvent:(NSEvent *)event {
        if ([event type] == NSLeftMouseDown || [event type] == NSRightMouseDown || [event type] == NSOtherMouseDown) {

            NSPoint p = [NSEvent mouseLocation];
            NSRect frame = [self.nsWindow frame];
            NSRect contentRect = [self.nsWindow contentRectForFrameRect:frame];

            // Check if the click happened in the non-client area (title bar)
            if (p.y >= (frame.origin.y + contentRect.size.height)) {
                JNIEnv *env = [ThreadUtilities getJNIEnvUncached];
                jobject platformWindow = [self.javaPlatformWindow jObjectWithEnv:env];
                // Currently, no need to deliver the whole NSEvent.
                static JNF_MEMBER_CACHE(jm_deliverNCMouseDown, jc_CPlatformWindow, "deliverNCMouseDown", "()V");
                JNFCallVoidMethod(env, platformWindow, jm_deliverNCMouseDown);
            }
        }
}

- (void)constrainSize:(NSSize*)size {
    float minWidth = 0.f, minHeight = 0.f;

    if (IS(self.styleBits, DECORATED)) {
        NSRect frame = [self.nsWindow frame];
        NSRect contentRect = [NSWindow contentRectForFrameRect:frame styleMask:[self.nsWindow styleMask]];

        float top = frame.size.height - contentRect.size.height;
        float left = contentRect.origin.x - frame.origin.x;
        float bottom = contentRect.origin.y - frame.origin.y;
        float right = frame.size.width - (contentRect.size.width + left);

        // Speculative estimation: 80 - enough for window decorations controls
        minWidth += left + right + 80;
        minHeight += top + bottom;
    }

    minWidth = MAX(1.f, minWidth);
    minHeight = MAX(1.f, minHeight);

    size->width = MAX(size->width, minWidth);
    size->height = MAX(size->height, minHeight);
}

- (void) setEnabled: (BOOL)flag {
    self.isEnabled = flag;

    if (IS(self.styleBits, CLOSEABLE)) {
        [[self.nsWindow standardWindowButton:NSWindowCloseButton] setEnabled: flag];
    }

    if (IS(self.styleBits, MINIMIZABLE)) {
        [[self.nsWindow standardWindowButton:NSWindowMiniaturizeButton] setEnabled: flag];
    }

    if (IS(self.styleBits, ZOOMABLE)) {
        [[self.nsWindow standardWindowButton:NSWindowZoomButton] setEnabled: flag];
    }

    if (IS(self.styleBits, RESIZABLE)) {
        [self updateMinMaxSize:flag];
        [self.nsWindow setShowsResizeIndicator:flag];
    }
}

+ (void) setLastKeyWindow:(AWTWindow *)window {
    [window retain];
    [lastKeyWindow release];
    lastKeyWindow = window;
}

+ (AWTWindow *) lastKeyWindow {
    return lastKeyWindow;
}

- (BOOL)windowShouldZoom:(NSWindow *)window toFrame:(NSRect)newFrame {
    return !NSEqualSizes(self.nsWindow.frame.size, newFrame.size);
}


@end // AWTWindow


/*
 * Class:     sun_lwawt_macosx_CPlatformWindow
 * Method:    nativeCreateNSWindow
 * Signature: (JJIIII)J
 */
JNIEXPORT jlong JNICALL Java_sun_lwawt_macosx_CPlatformWindow_nativeCreateNSWindow
(JNIEnv *env, jobject obj, jlong contentViewPtr, jlong ownerPtr, jlong styleBits, jdouble x, jdouble y, jdouble w, jdouble h)
{
    __block AWTWindow *window = nil;

JNF_COCOA_ENTER(env);

    JNFWeakJObjectWrapper *platformWindow = [JNFWeakJObjectWrapper wrapperWithJObject:obj withEnv:env];
    NSView *contentView = OBJC(contentViewPtr);
    NSRect frameRect = NSMakeRect(x, y, w, h);
    AWTWindow *owner = [OBJC(ownerPtr) delegate];
    [ThreadUtilities performOnMainThreadWaiting:YES block:^(){

        window = [[AWTWindow alloc] initWithPlatformWindow:platformWindow
                                               ownerWindow:owner
                                                 styleBits:styleBits
                                                 frameRect:frameRect
                                               contentView:contentView];
        // the window is released is CPlatformWindow.nativeDispose()

        if (window) CFRetain(window.nsWindow);
    }];

JNF_COCOA_EXIT(env);

    return ptr_to_jlong(window ? window.nsWindow : nil);
}

/*
 * Class:     sun_lwawt_macosx_CPlatformWindow
 * Method:    nativeSetNSWindowStyleBits
 * Signature: (JII)V
 */
JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CPlatformWindow_nativeSetNSWindowStyleBits
(JNIEnv *env, jclass clazz, jlong windowPtr, jint mask, jint bits)
{
JNF_COCOA_ENTER(env);

    NSWindow *nsWindow = OBJC(windowPtr);
    [ThreadUtilities performOnMainThreadWaiting:NO block:^(){

        AWTWindow *window = (AWTWindow*)[nsWindow delegate];

        // scans the bit field, and only updates the values requested by the mask
        // (this implicity handles the _CALLBACK_PROP_BITMASK case, since those are passive reads)
        jint newBits = window.styleBits & ~mask | bits & mask;

        // resets the NSWindow's style mask if the mask intersects any of those bits
        if (mask & MASK(_STYLE_PROP_BITMASK)) {
            [nsWindow setStyleMask:[AWTWindow styleMaskForStyleBits:newBits]];
        }

        // calls methods on NSWindow to change other properties, based on the mask
        if (mask & MASK(_METHOD_PROP_BITMASK)) {
            [window setPropertiesForStyleBits:newBits mask:mask];
        }

        window.styleBits = newBits;
    }];

JNF_COCOA_EXIT(env);
}

/*
 * Class:     sun_lwawt_macosx_CPlatformWindow
 * Method:    nativeSetNSWindowMenuBar
 * Signature: (JJ)V
 */
JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CPlatformWindow_nativeSetNSWindowMenuBar
(JNIEnv *env, jclass clazz, jlong windowPtr, jlong menuBarPtr)
{
JNF_COCOA_ENTER(env);

    NSWindow *nsWindow = OBJC(windowPtr);
    CMenuBar *menuBar = OBJC(menuBarPtr);
    [ThreadUtilities performOnMainThreadWaiting:NO block:^(){

        AWTWindow *window = (AWTWindow*)[nsWindow delegate];

        if ([nsWindow isKeyWindow]) {
            [window.javaMenuBar deactivate];
        }

        window.javaMenuBar = menuBar;

        CMenuBar* actualMenuBar = menuBar;
        if (actualMenuBar == nil) {
            actualMenuBar = [[ApplicationDelegate sharedDelegate] defaultMenuBar];
        }

        if ([nsWindow isKeyWindow]) {
            [CMenuBar activate:actualMenuBar modallyDisabled:NO];
        }
    }];

JNF_COCOA_EXIT(env);
}

/*
 * Class:     sun_lwawt_macosx_CPlatformWindow
 * Method:    nativeGetNSWindowInsets
 * Signature: (J)Ljava/awt/Insets;
 */
JNIEXPORT jobject JNICALL Java_sun_lwawt_macosx_CPlatformWindow_nativeGetNSWindowInsets
(JNIEnv *env, jclass clazz, jlong windowPtr)
{
    jobject ret = NULL;

JNF_COCOA_ENTER(env);

    NSWindow *nsWindow = OBJC(windowPtr);
    __block NSRect contentRect = NSZeroRect;
    __block NSRect frame = NSZeroRect;

    [ThreadUtilities performOnMainThreadWaiting:YES block:^(){

        frame = [nsWindow frame];
        contentRect = [NSWindow contentRectForFrameRect:frame styleMask:[nsWindow styleMask]];
    }];

    jint top = (jint)(frame.size.height - contentRect.size.height);
    jint left = (jint)(contentRect.origin.x - frame.origin.x);
    jint bottom = (jint)(contentRect.origin.y - frame.origin.y);
    jint right = (jint)(frame.size.width - (contentRect.size.width + left));

    static JNF_CLASS_CACHE(jc_Insets, "java/awt/Insets");
    static JNF_CTOR_CACHE(jc_Insets_ctor, jc_Insets, "(IIII)V");
    ret = JNFNewObject(env, jc_Insets_ctor, top, left, bottom, right);

JNF_COCOA_EXIT(env);
    return ret;
}

/*
 * Class:     sun_lwawt_macosx_CPlatformWindow
 * Method:    nativeSetNSWindowBounds
 * Signature: (JDDDD)V
 */
JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CPlatformWindow_nativeSetNSWindowBounds
(JNIEnv *env, jclass clazz, jlong windowPtr, jdouble originX, jdouble originY, jdouble width, jdouble height)
{
JNF_COCOA_ENTER(env);

    NSRect jrect = NSMakeRect(originX, originY, width, height);

    // TODO: not sure we need displayIfNeeded message in our view
    NSWindow *nsWindow = OBJC(windowPtr);
    [ThreadUtilities performOnMainThreadWaiting:NO block:^(){

        AWTWindow *window = (AWTWindow*)[nsWindow delegate];

        NSRect rect = ConvertNSScreenRect(NULL, jrect);
        [window constrainSize:&rect.size];

        [nsWindow setFrame:rect display:YES];

        // only start tracking events if pointer is above the toplevel
        // TODO: should post an Entered event if YES.
        NSPoint mLocation = [NSEvent mouseLocation];
        [nsWindow setAcceptsMouseMovedEvents:NSPointInRect(mLocation, rect)];

        // ensure we repaint the whole window after the resize operation
        // (this will also re-enable screen updates, which were disabled above)
        // TODO: send PaintEvent
    }];

JNF_COCOA_EXIT(env);
}

/*
 * Class:     sun_lwawt_macosx_CPlatformWindow
 * Method:    nativeSetNSWindowMinMax
 * Signature: (JDDDD)V
 */
JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CPlatformWindow_nativeSetNSWindowMinMax
(JNIEnv *env, jclass clazz, jlong windowPtr, jdouble minW, jdouble minH, jdouble maxW, jdouble maxH)
{
JNF_COCOA_ENTER(env);

    if (minW < 1) minW = 1;
    if (minH < 1) minH = 1;
    if (maxW < 1) maxW = 1;
    if (maxH < 1) maxH = 1;

    NSWindow *nsWindow = OBJC(windowPtr);
    [ThreadUtilities performOnMainThreadWaiting:NO block:^(){

        AWTWindow *window = (AWTWindow*)[nsWindow delegate];

        NSSize min = { minW, minH };
        NSSize max = { maxW, maxH };

        [window constrainSize:&min];
        [window constrainSize:&max];

        window.javaMinSize = min;
        window.javaMaxSize = max;
        [window updateMinMaxSize:IS(window.styleBits, RESIZABLE)];
    }];

JNF_COCOA_EXIT(env);
}

/*
 * Class:     sun_lwawt_macosx_CPlatformWindow
 * Method:    nativePushNSWindowToBack
 * Signature: (J)V
 */
JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CPlatformWindow_nativePushNSWindowToBack
(JNIEnv *env, jclass clazz, jlong windowPtr)
{
JNF_COCOA_ENTER(env);

    NSWindow *nsWindow = OBJC(windowPtr);
    [ThreadUtilities performOnMainThreadWaiting:NO block:^(){
        [nsWindow orderBack:nil];
    }];

JNF_COCOA_EXIT(env);
}

/*
 * Class:     sun_lwawt_macosx_CPlatformWindow
 * Method:    nativePushNSWindowToFront
 * Signature: (J)V
 */
JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CPlatformWindow_nativePushNSWindowToFront
(JNIEnv *env, jclass clazz, jlong windowPtr)
{
JNF_COCOA_ENTER(env);

    NSWindow *nsWindow = OBJC(windowPtr);
    [ThreadUtilities performOnMainThreadWaiting:NO block:^(){

        if (![nsWindow isKeyWindow]) {
            [nsWindow makeKeyAndOrderFront:nsWindow];
        } else {
            [nsWindow orderFront:nsWindow];
        }
    }];

JNF_COCOA_EXIT(env);
}

/*
 * Class:     sun_lwawt_macosx_CPlatformWindow
 * Method:    nativeSetNSWindowTitle
 * Signature: (JLjava/lang/String;)V
 */
JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CPlatformWindow_nativeSetNSWindowTitle
(JNIEnv *env, jclass clazz, jlong windowPtr, jstring jtitle)
{
JNF_COCOA_ENTER(env);

    NSWindow *nsWindow = OBJC(windowPtr);
    [nsWindow performSelectorOnMainThread:@selector(setTitle:)
                              withObject:JNFJavaToNSString(env, jtitle)
                           waitUntilDone:NO];

JNF_COCOA_EXIT(env);
}

/*
 * Class:     sun_lwawt_macosx_CPlatformWindow
 * Method:    nativeRevalidateNSWindowShadow
 * Signature: (J)V
 */
JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CPlatformWindow_nativeRevalidateNSWindowShadow
(JNIEnv *env, jclass clazz, jlong windowPtr)
{
JNF_COCOA_ENTER(env);

    NSWindow *nsWindow = OBJC(windowPtr);
    [ThreadUtilities performOnMainThreadWaiting:NO block:^(){
        [nsWindow invalidateShadow];
    }];

JNF_COCOA_EXIT(env);
}

/*
 * Class:     sun_lwawt_macosx_CPlatformWindow
 * Method:    nativeScreenOn_AppKitThread
 * Signature: (J)I
 */
JNIEXPORT jint JNICALL Java_sun_lwawt_macosx_CPlatformWindow_nativeScreenOn_1AppKitThread
(JNIEnv *env, jclass clazz, jlong windowPtr)
{
    jint ret = 0;

JNF_COCOA_ENTER(env);
AWT_ASSERT_APPKIT_THREAD;

    NSWindow *nsWindow = OBJC(windowPtr);
    NSDictionary *props = [[nsWindow screen] deviceDescription];
    ret = [[props objectForKey:@"NSScreenNumber"] intValue];

JNF_COCOA_EXIT(env);

    return ret;
}

/*
 * Class:     sun_lwawt_macosx_CPlatformWindow
 * Method:    nativeSetNSWindowMinimizedIcon
 * Signature: (JJ)V
 */
JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CPlatformWindow_nativeSetNSWindowMinimizedIcon
(JNIEnv *env, jclass clazz, jlong windowPtr, jlong nsImagePtr)
{
JNF_COCOA_ENTER(env);

    NSWindow *nsWindow = OBJC(windowPtr);
    NSImage *image = OBJC(nsImagePtr);
    [ThreadUtilities performOnMainThreadWaiting:NO block:^(){
        [nsWindow setMiniwindowImage:image];
    }];

JNF_COCOA_EXIT(env);
}

/*
 * Class:     sun_lwawt_macosx_CPlatformWindow
 * Method:    nativeSetNSWindowRepresentedFilename
 * Signature: (JLjava/lang/String;)V
 */
JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CPlatformWindow_nativeSetNSWindowRepresentedFilename
(JNIEnv *env, jclass clazz, jlong windowPtr, jstring filename)
{
JNF_COCOA_ENTER(env);

    NSWindow *nsWindow = OBJC(windowPtr);
    NSURL *url = (filename == NULL) ? nil : [NSURL fileURLWithPath:JNFNormalizedNSStringForPath(env, filename)];
    [ThreadUtilities performOnMainThreadWaiting:NO block:^(){
        [nsWindow setRepresentedURL:url];
    }];

JNF_COCOA_EXIT(env);
}

/*
 * Class:     sun_lwawt_macosx_CPlatformWindow
 * Method:    nativeGetTopmostPlatformWindowUnderMouse
 * Signature: (J)V
 */
JNIEXPORT jobject
JNICALL Java_sun_lwawt_macosx_CPlatformWindow_nativeGetTopmostPlatformWindowUnderMouse
(JNIEnv *env, jclass clazz)
{
    jobject topmostWindowUnderMouse = nil;

    JNF_COCOA_ENTER(env);
    AWT_ASSERT_APPKIT_THREAD;

    AWTWindow *awtWindow = [AWTWindow getTopmostWindowUnderMouse];
    if (awtWindow != nil) {
        topmostWindowUnderMouse = [awtWindow.javaPlatformWindow jObject];
    }

    JNF_COCOA_EXIT(env);

    return topmostWindowUnderMouse;
}

/*
 * Class:     sun_lwawt_macosx_CPlatformWindow
 * Method:    nativeSynthesizeMouseEnteredExitedEvents
 * Signature: (J)V
 */
JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CPlatformWindow_nativeSynthesizeMouseEnteredExitedEvents
(JNIEnv *env, jclass clazz)
{
    JNF_COCOA_ENTER(env);

    [ThreadUtilities performOnMainThreadWaiting:NO block:^(){
        [AWTWindow synthesizeMouseEnteredExitedEventsForAllWindows];
    }];

    JNF_COCOA_EXIT(env);
}

/*
 * Class:     sun_lwawt_macosx_CPlatformWindow
 * Method:    _toggleFullScreenMode
 * Signature: (J)V
 */
JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CPlatformWindow__1toggleFullScreenMode
(JNIEnv *env, jobject peer, jlong windowPtr)
{
JNF_COCOA_ENTER(env);

    NSWindow *nsWindow = OBJC(windowPtr);
    SEL toggleFullScreenSelector = @selector(toggleFullScreen:);
    if (![nsWindow respondsToSelector:toggleFullScreenSelector]) return;

    [ThreadUtilities performOnMainThreadWaiting:NO block:^(){
        [nsWindow performSelector:toggleFullScreenSelector withObject:nil];
    }];

JNF_COCOA_EXIT(env);
}

JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CPlatformWindow_nativeSetEnabled
(JNIEnv *env, jclass clazz, jlong windowPtr, jboolean isEnabled)
{
JNF_COCOA_ENTER(env);

    NSWindow *nsWindow = OBJC(windowPtr);
    [ThreadUtilities performOnMainThreadWaiting:NO block:^(){
        AWTWindow *window = (AWTWindow*)[nsWindow delegate];

        [window setEnabled: isEnabled];
    }];

JNF_COCOA_EXIT(env);
}

JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CPlatformWindow_nativeDispose
(JNIEnv *env, jclass clazz, jlong windowPtr)
{
JNF_COCOA_ENTER(env);

    NSWindow *nsWindow = OBJC(windowPtr);
    [ThreadUtilities performOnMainThreadWaiting:NO block:^(){
        AWTWindow *window = (AWTWindow*)[nsWindow delegate];

        if ([AWTWindow lastKeyWindow] == window) {
            [AWTWindow setLastKeyWindow: nil];
        }

        // AWTWindow holds a reference to the NSWindow in its nsWindow
        // property. Unsetting the delegate allows it to be deallocated
        // which releases the reference. This, in turn, allows the window
        // itself be deallocated.
        [nsWindow setDelegate: nil];

        [window release];
    }];

JNF_COCOA_EXIT(env);
}

JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CPlatformWindow_nativeEnterFullScreenMode
(JNIEnv *env, jclass clazz, jlong windowPtr)
{
JNF_COCOA_ENTER(env);

    NSWindow *nsWindow = OBJC(windowPtr);
    [ThreadUtilities performOnMainThreadWaiting:NO block:^(){
        AWTWindow *window = (AWTWindow*)[nsWindow delegate];
        NSNumber* screenID = [AWTWindow getNSWindowDisplayID_AppKitThread: nsWindow];
        CGDirectDisplayID aID = [screenID intValue];

        if (CGDisplayCapture(aID) == kCGErrorSuccess) {
            // remove window decoration
            NSUInteger styleMask = [AWTWindow styleMaskForStyleBits:window.styleBits];
            [nsWindow setStyleMask:(styleMask & ~NSTitledWindowMask) | NSBorderlessWindowMask];

            int shieldLevel = CGShieldingWindowLevel();
            window.preFullScreenLevel = [nsWindow level];
            [nsWindow setLevel: shieldLevel];

            NSRect screenRect = [[nsWindow screen] frame];
            [nsWindow setFrame:screenRect display:YES];
        } else {
            [JNFException raise:[ThreadUtilities getJNIEnv]
                             as:kRuntimeException
                         reason:"Failed to enter full screen."];
        }
    }];

JNF_COCOA_EXIT(env);
}

JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CPlatformWindow_nativeExitFullScreenMode
(JNIEnv *env, jclass clazz, jlong windowPtr)
{
JNF_COCOA_ENTER(env);

    NSWindow *nsWindow = OBJC(windowPtr);
    [ThreadUtilities performOnMainThreadWaiting:NO block:^(){
        AWTWindow *window = (AWTWindow*)[nsWindow delegate];
        NSNumber* screenID = [AWTWindow getNSWindowDisplayID_AppKitThread: nsWindow];
        CGDirectDisplayID aID = [screenID intValue];

        if (CGDisplayRelease(aID) == kCGErrorSuccess) {
            NSUInteger styleMask = [AWTWindow styleMaskForStyleBits:window.styleBits];
            [nsWindow setStyleMask:styleMask]; 
            [nsWindow setLevel: window.preFullScreenLevel];

            // GraphicsDevice takes care of restoring pre full screen bounds
        } else {
            [JNFException raise:[ThreadUtilities getJNIEnv]
                             as:kRuntimeException
                         reason:"Failed to exit full screen."];
        }
    }];

JNF_COCOA_EXIT(env);
}