RFR: 8271846 a11y API lacks setSelectedIndex method [v4]

[Artem Semenov]

On Sun, 20 Nov 2022 03:16:28 GMT, Sergey Bylokhov <serb at openjdk.org> wrote:

>> It looks like it is. Please formulate the question differently.
>
> It is unclear why the `setSelectionInterval `is actually any better than `addAccessibleSelection`. Both have a similar implementation,  in some cases, the addSelectionInterval just calls setSelectionInterval, and seems that posts similar notifications. So it is unclear why the setSelectionInterval works fine and addAccessibleSelection does not work.

I tried calling clearSelection again instead of adding an interface:

                if (as == null) return;
                if (pac.getAccessibleRole().equals(AccessibleRole.LIST)) {
                    as.clearAccessibleSelection();
                }
                as.addAccessibleSelection(i);

After that I changed the call to ```javax.swing.JList.AccessibleJList#addAccessibleSelection```

JList.this.addSelectionInterval(i, i);

on the

JList.this.getSelectionModel().setSelectionInterval(i, i);

Nothing changed. VoiceOVer still freezes.
The problem is not that setting the selection doesn't work, but that clearing the selection before setting causes the VO to fris.

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PR: https://git.openjdk.org/jdk/pull/8578