RFR: 8376492: NullPointer in ContextMenu sub-menu when graphic and style classes are changed while the menu is open [v2]

[Dmitry Markov]

On Mon, 23 Feb 2026 16:18:47 GMT, Dmitry Markov <dmarkov at openjdk.org> wrote:

>> A NullPointerException occurs when a ContextMenu submenu is opened for the second time and the graphic and style classes are modified while the menu is open.
>> 
>> Fix: Added a null check.
>
> Dmitry Markov has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Remove previous ItemStyleClassListener

I have updated the fix based on @eduardsdv suggestion: implement removal of previous  `itemStyleClassListener` in `createChildred()` method. 
I cannot replicate the `NPE` and do not observe that number of `itemStyleClassListener` is growing anymore.

Please review the new version.

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PR Comment: https://git.openjdk.org/jfx/pull/2075#issuecomment-3945787078