RFR: 8290040: Provide simplified deterministic way to manage listeners [v2]

[John Hendrikx]

On Wed, 31 Aug 2022 16:52:12 GMT, Nir Lisker <nlisker at openjdk.org> wrote:

>> John Hendrikx has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Rename showing property to shown as it is already used in subclasses
>
> modules/javafx.base/src/main/java/javafx/beans/value/ObservableValue.java line 258:
> 
>> 256:     /**
>> 257:      * Returns an {@code ObservableValue} that holds this value whenever the given
>> 258:      * condition evaluates to {@code true}, otherwise holds the last value when
> 
>> evaluates to
> 
> Maybe "holds"?

I've changed things in several places to use that verb.

-------------

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