Looks fine.
>
> Hello,
>
> Could you review a fix for jdk9, please?
>
> bug: https://bugs.openjdk.java.net/browse/JDK-8171952
> <https://bugs.openjdk.java.net/browse/JDK-8171952>
> webrev: http://cr.openjdk.java.net/~dmarkov/8171952/webrev.00/
>
> Problem description:
> LWCToolkit.getPlatformWindowUnderMouse() looks for a window only at normal
> window level/layer, (i.e. NSNormalWindowLevel). However after integration of
> JDK-8080729 the child windows of focused window are placed to floating level,
> (i.e. NSFloatingWindowLevel).
> So the following situation may take place: the window is in focused state and
> obscured by its child dialog, but the current implementation of
> getPlatformWindowUnderMouse() reports that the window is under mouse.
>
> Fix:
> getPlatformWindowUnderMouse() should look at all possible window
> levels/layers during retrieval of the topmost window under mouse.
>
> Thanks,
> Dmitry
