RFR: 8272229: BasicSplitPaneDivider:oneTouchExpandableChanged() returns leftButton and rightButton as null with GTKLookAndFeel [v5]

[Sergey Bylokhov]

On Fri, 8 Oct 2021 13:05:34 GMT, Pankaj Bansal <pbansal at openjdk.org> wrote:

>> The function documentation for oneTouchExpandableChanged states that the function does couple of things, but in reality  it only does those things if the Look and Feel supports the supportsOneTouchButtons. In case the Look and Feel does not support supportsOneTouchButtons, this functions just returns in beginning and does not do anything.
>> This change clarifies the above in function documentation.
>
> Pankaj Bansal has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Review Comment

Marked as reviewed by serb (Reviewer).

New version looks fine

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PR: https://git.openjdk.java.net/jdk/pull/5263