src/java.desktop/macosx/native/libawt_lwawt/awt/AWTWindow.m

*** 475,484 ****
--- 475,499 ----
      }
  
      return isBlocked;
  }
  
+ // Test whether window is simple window and owned by embedded frame
+ - (BOOL) isSimpleWindowOwnedByEmbeddedFrame {
+     BOOL isSimpleWindowOwnedByEmbeddedFrame = NO;
+ 
+     JNIEnv *env = [ThreadUtilities getJNIEnv];
+     jobject platformWindow = [self.javaPlatformWindow jObjectWithEnv:env];
+     if (platformWindow != NULL) {
+         static JNF_MEMBER_CACHE(jm_isBlocked, jc_CPlatformWindow, "isSimpleWindowOwnedByEmbeddedFrame", "()Z");
+         isSimpleWindowOwnedByEmbeddedFrame = JNFCallBooleanMethod(env, platformWindow, jm_isBlocked) == JNI_TRUE ? YES : NO;
+         (*env)->DeleteLocalRef(env, platformWindow);
+     }
+ 
+     return isSimpleWindowOwnedByEmbeddedFrame;
+ }
+ 
  // Tests whether the corresponding Java platform window is visible or not
  + (BOOL) isJavaPlatformWindowVisible:(NSWindow *)window {
      BOOL isVisible = NO;
  
      if ([AWTWindow isAWTWindow:window] && [window delegate] != nil) {
*** 541,551 ****
  }
  
  // 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) {
--- 556,566 ----
  }
  
  // NSWindow overrides
  - (BOOL) canBecomeKeyWindow {
  AWT_ASSERT_APPKIT_THREAD;
!     return self.isEnabled && (IS(self.styleBits, SHOULD_BECOME_KEY) || [self isSimpleWindowOwnedByEmbeddedFrame]);
  }
  
  - (BOOL) canBecomeMainWindow {
  AWT_ASSERT_APPKIT_THREAD;
      if (!self.isEnabled) {