RFR: 8262023: Scrolled button is pressed using Monocle on Raspberry Pi with Touchscreen

Tue Apr 27 12:27:38 UTC 2021

On Tue, 27 Apr 2021 12:01:54 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> > May be it has sense to add a drag event handler (which disarms the corresponding button) to ButtonBehavior only if javafx.platform is set to monocle to localize the fix only for Monocle? Or add a separate property and set it by default to true on Monocle and to false otherwise?
> 
> Following up on this: have you given this any more thought? The current fix runs the risk of regression on desktop platforms, so will need additional testing unless you decide to limit the fix to Monocle platforms.

I am personally not in favor of adding a check on Monocle. That sounds like we care less about quality when talking about Monocle. We do more experimental things in Monocle, but I think we simply need to get this issue right. 
I fully agree it needs more testing. I think it would be good to see some scenario's that contain numbers and expected behavior (e.g. in case this sequence of low-level events is generated, what high-level events do we expect).

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PR: https://git.openjdk.java.net/jfx/pull/406