RFR: 8290040: Provide simplified deterministic way to manage listeners [v6]

[John Hendrikx]

On Wed, 19 Oct 2022 18:18:48 GMT, Andy Goryachev <angorya at openjdk.org> wrote:

>> John Hendrikx has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains ten commits:
>> 
>>  - Merge remote-tracking branch 'origin/master' into
>>    feature/conditional-bindings
>>    
>>    # Conflicts:
>>    #	modules/javafx.base/src/test/java/test/javafx/beans/value/LazyObjectBindingTest.java
>>  - Fix review comments
>>  - Add missing new line
>>  - Small wording fixes
>>  - Update javadoc of "when" with better phrasing
>>  - Rename showing property to shown as it is already used in subclasses
>>  - Add conditional bindings to ObservableValue
>>  - Change explanatory comment to block comment
>>  - Fix bug where ObjectBinding returns null when revalidated immediately
>>    
>>    Introduced with the fluent bindings PR
>
> modules/javafx.graphics/src/main/java/javafx/scene/Node.java line 1442:
> 
>> 1440: 
>> 1441:     // Candidate to make publicly available or to add as a convience method to ObservableValue
>> 1442:     private static class ReadOnlyBooleanDelegate extends ReadOnlyBooleanProperty {
> 
> should this class be moved elsewhere?

It can be, generally I tend to this when there is a second use of the class.  In that case we may also want to introduce the other primitive versions.  So for now I would leave it here, until there is another use case.

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PR: https://git.openjdk.org/jfx/pull/830