8214046: [macosx] Undecorated Frame does not Iconify when set to

Reviewed-by: phh, serb
Backport-of: ab97f65242dad6ad1a7bfb8284954f202eb37369

Author: gesellix

jdk/src/macosx/native/sun/awt/AWTWindow.m

@@ -203,13 +203,13 @@ + (NSUInteger) styleMaskForStyleBits:(jint)styleBits {
     if (IS(styleBits, DECORATED)) {
         type |= NSTitledWindowMask;
         if (IS(styleBits, CLOSEABLE))            type |= NSClosableWindowMask;
-        if (IS(styleBits, MINIMIZABLE))          type |= NSMiniaturizableWindowMask;
         if (IS(styleBits, RESIZABLE))            type |= NSResizableWindowMask;
         if (IS(styleBits, FULL_WINDOW_CONTENT))  type |= NSFullSizeContentViewWindowMask;
     } else {
         type |= NSBorderlessWindowMask;
     }
 
+    if (IS(styleBits, MINIMIZABLE))   type |= NSMiniaturizableWindowMask;
     if (IS(styleBits, TEXTURED))      type |= NSTexturedBackgroundWindowMask;
     if (IS(styleBits, UNIFIED))       type |= NSUnifiedTitleAndToolbarWindowMask;
     if (IS(styleBits, UTILITY))       type |= NSUtilityWindowMask;

jdk/test/java/awt/Frame/NormalToIconified/NormalToIconifiedTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2019, 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
@@ -23,7 +23,7 @@
 
 /*
  * @test
- * @bug 8171949
+ * @bug 8171949 8214046
  * @summary Tests that bitwise mask is set and state listener is notified during state transition.
  * @author Dmitry Markov
  * @library ../../regtesthelpers
@@ -40,12 +40,19 @@
 import test.java.awt.regtesthelpers.Util;
 
 public class NormalToIconifiedTest {
-    private static final AtomicBoolean listenerNotified = new AtomicBoolean(false);
 
     public static void main(String[] args) {
+        test(false);
+        test(true);
+    }
+
+    private static void test(final boolean undecorated) {
+        AtomicBoolean listenerNotified = new AtomicBoolean(false);
+
         Robot robot = Util.createRobot();
 
         Frame testFrame = new Frame("Test Frame");
+        testFrame.setUndecorated(undecorated);
         testFrame.setSize(200, 200);
         testFrame.addWindowStateListener(new WindowStateListener() {
             @Override