RFR: 8273485: Deadlock when also using Swing and exiting Fullscreen on Mac [v4]

[Florian Kirmaier]

On Fri, 17 Sep 2021 12:51:53 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

>> Florian Kirmaier has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   JDK-8273485
>>   small cleanup of the changes.
>
> You can also see the exception with _any_ JavaFX program: enter full-screen with the green button, move the mouse to the upper-left corner to reveal the window decorations, and press the red button to exit the program.
> 
> I think you need to look for a different solution to your deadlock, one that preserves the existing nested event loop.

@kevinrushforth 
Did you test really test my change and was able to reproduce the JDK-8126842 with it?
On my system everything works - except the small "beep" sound.

After investigating it, I've made another small change - which fixes the beep sound. It also makes it closer to the implementation for iOS. I've changed the `waitUntilDone` value to true, when closing the window.

I think removing the nestedEventLoops should be preferred over another fix - in my experience the nested event loops are the cause of so many rare and very complicated bugs.

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PR: https://git.openjdk.java.net/jfx/pull/622