src/share/classes/sun/awt/SunToolkit.java

*** 2016,2025 ****
--- 2016,2038 ----
              }
          }
          return isInstanceOf(cls.getSuperclass(), type);
      }
  
+     protected static LightweightFrame getLightweightFrame(Component c) {
+         for (; c != null; c = c.getParent()) {
+             if (c instanceof LightweightFrame) {
+                 return (LightweightFrame)c;
+             }
+             if (c instanceof Window) {
+                 // Don't traverse owner windows
+                 return null;
+             }
+         }
+         return null;
+     }
+ 
      ///////////////////////////////////////////////////////////////////////////
      //
      // The following methods help set and identify whether a particular
      // AWTEvent object was produced by the system or by user code. As of this
      // writing the only consumer is the Java Plug-In, although this information