RFR: 8268225: Support :focus-visible and :focus-within CSS pseudoclasses [v9]

[Kevin Rushforth]

On Thu, 19 May 2022 04:03:46 GMT, Michael Strauß <mstrauss at openjdk.org> wrote:

>> This PR adds the `Node.focusVisible` and `Node.focusWithin` properties, as well as the corresponding `:focus-visible` and `:focus-within` CSS pseudo-classes.
>
> Michael Strauß has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains 23 additional commits since the last revision:
> 
>  - Merge branch 'master' into feature/focusvisible
>  - Updated since tag
>  - Update copyright headers
>  - Merge branch 'master' into feature/focusvisible
>  - fixed undeterministic test failures
>  - minor wording change
>  - restart github actions
>  - Merge branch 'master' of https://github.com/mstr2/jfx into feature/focusvisible
>  - changes per discussion, added test
>  - wording
>  - ... and 13 more: https://git.openjdk.org/jfx/compare/cada6655...0c7d6e72

I'd like to try to get this in for 19, although time is short.

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PR: https://git.openjdk.org/jfx/pull/475