RFR: 8303680 Virtual Flow freezes after calling scrollTo and scrollPixels in succession

[Florian Kirmaier]

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On Mon, 6 Mar 2023 16:39:22 GMT, Andy Goryachev <angorya at openjdk.org> wrote:

>> Possible fix for VirtualFlow freeze.
>> 
>> I encountered the problem when experimenting with VirtualFlow.
>> 
>> Guess @johanvos should take a look.
>> All tests are still green, so with some luck, this doesn't break anything but fixes some known and unknown bugs.
>
> modules/javafx.controls/src/test/java/test/javafx/scene/control/ListViewTest.java line 2540:
> 
>> 2538:         // scroll to 50 and scroll 1 pixel
>> 2539:         vf.scrollTo(50);
>> 2540:         vf.scrollPixels(1);
> 
> this is a rather artificial test.  
> is it possible to reproduce the condition using control's public APIs?

This is the public API of VirtualFlow. I don't know whether it's possible with the API of the Control - But the API of the VirtualFlow should be stable too, right?

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PR: https://git.openjdk.org/jfx/pull/1052