[jfx19] RFR: 8290331 Binding value left null when immediately revalidated in invalidation listener [v2]

[Nir Lisker]

On Fri, 15 Jul 2022 07:19:19 GMT, John Hendrikx <jhendrikx at openjdk.org> wrote:

>> I introduced a bug with the fluent bindings PR which affects all ObjectBindings.
>> 
>> This is the code that fails:
>> 
>>         SimpleObjectProperty<Boolean> condition = new SimpleObjectProperty<>(true);
>>         ObservableValue<String> binding = condition.map(Object::toString);
>> 
>>         binding.addListener(o -> { binding.getValue(); });
>> 
>>         condition.set(false);
>> 
>>         assertEquals(false, binding.getValue());  // returns null (!)
>> 
>> This PR fixes this problem and adds a test case to cover it.
>
> John Hendrikx has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Change explanatory comment to block comment

Alright, I closed [JDK-8206449](https://bugs.openjdk.org/browse/JDK-8206449) as duplicated of [JDK-8274771](https://bugs.openjdk.org/browse/JDK-8274771).

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PR: https://git.openjdk.org/jfx/pull/829