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

*** 59,68 ****
--- 59,69 ----
  @implementation AWTView
  
  @synthesize _dropTarget;
  @synthesize _dragSource;
  @synthesize cglLayer;
+ @synthesize mouseIsOver;
  
  // Note: Must be called on main (AppKit) thread only
  - (id) initWithRect: (NSRect) rect
         platformView: (jobject) cPlatformView
         windowLayer: (CALayer*) windowLayer
*** 297,314 ****
  /**
   * 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.
  
--- 298,324 ----
  /**
   * Utility methods and accessors
   */
  
  -(void) deliverJavaMouseEvent: (NSEvent *) event {
+     
+     NSEventType type = [event type];    
+     
+     // check synthesized mouse entered/exited events
+     if((type == NSMouseEntered && mouseIsOver) || (type == NSMouseExited && !mouseIsOver)){
+         return;
+     }else if((type == NSMouseEntered && !mouseIsOver) || (type == NSMouseExited && mouseIsOver)){
+         mouseIsOver = !mouseIsOver;
+     }
+     
      [AWTToolkit eventCountPlusPlus];
  
      JNIEnv *env = [ThreadUtilities getJNIEnv];
  
      NSPoint eventLocation = [event locationInWindow];
      NSPoint localPoint = [self convertPoint: eventLocation fromView: nil];
      NSPoint absP = [NSEvent mouseLocation];
  
      // 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.