On Thu, 1 Oct 2020 11:23:03 GMT, Jeanette Winzenburg <faste...@openjdk.org> 
wrote:

>> I understand that some people want support for the **new features** of Skin 
>> Swiching.
>
>> 
>> 
>> I understand that some people want support for the **new features** of Skin 
>> Swiching.
> 
> Assuming that you are joking ;) Just in case you are not and for the record:
> 
>     skinnable.setSkin(skin)
>     skin.dispose()
> 
> are public api without any notion of being optional - making the 
> implementation of TextAreaSkin misbehaving big style.
> 
> That said: verified that the fix improves performance of the example 
> immensely. So I think it should be integrated
> asap, ignoring the big heap of mess already there.
> Nevertheless, it should
> 
> - be implemented in a way to not add to the pile of dirt: instead of adding 
> the changeListeners manually, add them via
>   skin api (which will remove them automatically in dispose). That's possible 
> if they are added once in the life-time of
>   the skin, which seems to be the case, or not?
> - add tests:
>       - unit tests to ensure that changing properties that effect the clip 
> actually are adjusting it
>       - system? test to verify the performance gain

I think testing of the internal structure of Control should be minimal; I think 
testing for context, such as CSS
classes, is necessary. In particular, I don't think we are at a stage where we 
are dealing with the internal structure
of TextArea in a fixed way, so we will need to determine the Next Step.

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

PR: https://git.openjdk.java.net/jfx/pull/307

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