RFR: 8309374: Accessibility Focus Rectangle on ListItem is not drawn when ListView is shown for first time

[Kevin Rushforth]

On Tue, 13 Feb 2024 12:29:49 GMT, Ambarish Rapte <arapte at openjdk.org> wrote:

> This is accessibility specific fix.
> 
> **Issue**: When a ListView is shown for first time then accessibility focus rectangle is not drawn around the focused ListIem
> 
> **Cause:** 
>    The ListView takes a little time to create it's skin(ListViewSkin) and the skins for ListItems(ListCellSkin)
>    If the Accessibility client application requests focused item before ListView is completely ready then JavaFX return null.
> 
> **Fix**: Send a focus item change notification to accessibility client application after the ListIteam is ready
> 
> **Verification:**
> - On Windows machine, launch Narrator. Issue is observed only with Narrator
> - Execute the [program](https://bugs.openjdk.org/secure/attachment/104180/Main.java) attached to the JBS issue [JDK-8309374](https://bugs.openjdk.org/browse/JDK-8309374)
>      Move through the TextFields and press `Alt+down`, observe that focus rectangle is drawn correctly.
>      Once the ListView is showing Press and hold `Up/Down` or `Ctrl + Up/Down` keys, observe that focus rectangle is always drawn.

Reviewers: @kevinrushforth @azuev-java

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PR Comment: https://git.openjdk.org/jfx/pull/1363#issuecomment-1942130364