7154062: [macosx] Mouse cursor isn't updated in applets

Reviewed-by: anthony, art

src/macosx/classes/sun/lwawt/macosx/CCursorManager.java

@@ -36,6 +36,7 @@ final class CCursorManager extends LWCursorManager {
     private static native Point2D nativeGetCursorPosition();
     private static native void nativeSetBuiltInCursor(final int type, final String name);
     private static native void nativeSetCustomCursor(final long imgPtr, final double x, final double y);
+    public static native void nativeSetAllowsCursorSetInBackground(final boolean allows);
 
     private static final int NAMED_CURSOR = -1;
 

src/macosx/classes/sun/lwawt/macosx/CEmbeddedFrame.java

@@ -76,6 +76,12 @@ public class CEmbeddedFrame extends EmbeddedFrame {
         int screenX = locationOnScreen.x + x;
         int screenY = locationOnScreen.y + y;
 
+        if (eventType == CocoaConstants.NPCocoaEventMouseEntered) {
+            CCursorManager.nativeSetAllowsCursorSetInBackground(true);
+        } else if (eventType == CocoaConstants.NPCocoaEventMouseExited) {
+            CCursorManager.nativeSetAllowsCursorSetInBackground(false);
+        }
+
         responder.handleMouseEvent(eventType, modifierFlags, buttonNumber,
                                    clickCount, x, y, screenX, screenY);
     }

src/macosx/native/sun/awt/CCursorManager.m

@@ -137,3 +137,30 @@ JNF_COCOA_EXIT(env);
 
     return jpt;
 }
+
+
+JNIEXPORT void JNICALL
+Java_sun_lwawt_macosx_CCursorManager_nativeSetAllowsCursorSetInBackground
+(JNIEnv *env, jclass class, jboolean allows)
+{
+
+JNF_COCOA_ENTER(env);
+AWT_ASSERT_NOT_APPKIT_THREAD;
+
+    SEL allowsSetInBackground_SEL = @selector(javaSetAllowsCursorSetInBackground:);
+    if ([[NSCursor class] respondsToSelector:allowsSetInBackground_SEL]) {
+        [JNFRunLoop performOnMainThreadWaiting:YES withBlock:^(){
+            NSMethodSignature *allowsSetInBackground_sig =
+                [[NSCursor class] methodSignatureForSelector:allowsSetInBackground_SEL];
+            NSInvocation *invocation =
+                [NSInvocation invocationWithMethodSignature:allowsSetInBackground_sig];
+            BOOL arg = (BOOL)allows;
+            [invocation setSelector:allowsSetInBackground_SEL];
+            [invocation setArgument:&arg atIndex:2];
+            [invocation invokeWithTarget:[NSCursor class]];
+        }];
+    }
+
+JNF_COCOA_EXIT(env);
+
+}