RFR: JDK-8303897 ObservableValue's when binding should only invalidate when strictly needed [v2]

[John Hendrikx]

On Sun, 9 Apr 2023 16:55:50 GMT, Nir Lisker <nlisker at openjdk.org> wrote:

> About the second bug. I tested that there are no extra invalidation events after the patch that were occurring without it. Isn't this something there should be a test for (a counter for invalidation events)?

I think I misunderstood this comment, there is definitely a test that fails, but I think you meant why I did not verify the problem with an invalidation listener directly... I guess I just wanted to be sure it worked in combination with downstream bindings (as that's how I discovered the issue).  I have added that now though.

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PR Comment: https://git.openjdk.org/jfx/pull/1056#issuecomment-1501217429