RFR: 8297130: ComboBox popup doesn't close after selecting value that was added with 'runLater'

[Ajit Ghaisas]

On Sat, 19 Nov 2022 18:01:41 GMT, Michael Strauß <mstrauss at openjdk.org> wrote:

> This PR fixes a bug where multi-level focus is not correctly preserved.
> The original implementation incorrectly assumed that there can only be a single focused node in the scene graph, which is not the case when a branch of the scene graph is presented by a `PopupWindow`. More specifically, when a focused node was removed from the scene graph, the focus flags of all parents were incorrectly cleared. The correct implementation only clears the `focusWithin` flag of parents (but not `focused` or `focusVisible`), and stops when another focused node is encountered along the way.

The fix looks good to me!

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Marked as reviewed by aghaisas (Reviewer).

PR: https://git.openjdk.org/jfx/pull/956