RFR: 8167: [Accessibility]: 'Click here to start using JDK Mission Control' button does not have any function to open JDK mission control

[Alex Macdonald]

On Thu, 25 Jan 2024 09:34:39 GMT, Suchita Chaturvedi <schaturvedi at openjdk.org> wrote:

> On Welcome page, User move focus to "Click here to start using JDK Mission Control" button and press Enter but it does not have any function to open JDK mission control.
> 
> This issue was reported as part of accessibility testing requirement. From the accessibility point of view, the user will be stuck on welcome page and won't be able to proceed further.
> 
> <img width="959" alt="image" src="https://github.com/openjdk/jmc/assets/11155712/605ba3a3-991d-4367-8f30-6bbf8a3db56f">

Gave this a try on Windows and it works.

Currently, the Windows version is similar to what I have in my screenshots for the Linux version in comment: https://github.com/openjdk/jmc/pull/547#issuecomment-1910372410. When cycling through the html components with tab, there are two components in the area of the button. The first one encapsulates the whole button, and does not work when enter is hit. The second one in Linux is shifted downwards a bit, and in Windows does not show highlighting at all (even though it is still selected), and both will proceed when hitting enter on the keyboard. While this PR does a nice job to tie the expected behaviour to the button it might be worthwhile to take a better look at the html and figure out what's going on with the components.

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Marked as reviewed by aptmac (Reviewer).

PR Review: https://git.openjdk.org/jmc/pull/547#pullrequestreview-1848931525