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

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+ * 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

@@ -113,10 +113,12 @@
     static final int CLOSEABLE = 1 << 7;
     static final int MINIMIZABLE = 1 << 8;
 
     static final int RESIZABLE = 1 << 9; // both a style bit and prop bit
     static final int NONACTIVATING = 1 << 24;
+    static final int IS_DIALOG = 1 << 25;
+    static final int IS_MODAL = 1 << 26;
 
     static final int _STYLE_PROP_BITMASK = DECORATED | TEXTURED | UNIFIED | UTILITY | HUD | SHEET | CLOSEABLE | MINIMIZABLE | RESIZABLE;
 
     // corresponds to method-based properties
     static final int HAS_SHADOW = 1 << 10;

@@ -369,10 +371,17 @@
             if (prop != null) {
                 styleBits = SET(styleBits, DRAGGABLE_BACKGROUND, Boolean.parseBoolean(prop.toString()));
             }
         }
 
+        if (isDialog) {
+            styleBits = SET(styleBits, IS_DIALOG, true);
+            if (((Dialog) target).isModal()) {
+                styleBits = SET(styleBits, IS_MODAL, true);
+            }
+        }
+
         peer.setTextured(IS(TEXTURED, styleBits));
 
         return styleBits;
     }