RFR: 8091673: Public focus traversal API for use in custom controls [v3]

[Michael Strauß]

On Mon, 28 Oct 2024 17:25:15 GMT, Andy Goryachev <angorya at openjdk.org> wrote:

>> So you're proposing to change the specification of `focusVisible`. That needs to be discussed first.
>
> I do not.  Why do you say that?

Because `focusVisible` is specified to _only_ be set as a result of keyboard navigation, not as a result of programmatic navigation.

`Node.focusVisible` specifies:

    /**
     * Indicates whether this {@code Node} should visibly indicate focus.
     * This flag is set when the node acquires input focus via keyboard navigation,
     * and it is cleared when the node loses focus or when {@link #requestFocus()}
     * is called.
     *
     * @defaultValue false
     * @since 19
     */


The [JBS issue](https://bugs.openjdk.org/browse/JDK-8268225) says:
> For JavaFX, "Node.focusVisible" would be set in addition to "Node.focused" if a scene graph node gained focus as a consequence of keyboard input. In all other cases, "Node.focusVisible" would not be set on a node.

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PR Review Comment: https://git.openjdk.org/jfx/pull/1604#discussion_r1819469497