commit 58b67c986549e8431f760ef5c64980b2632f799e
author Joanmarie Diggs <jdiggs@igalia.com> Fri Nov 13 15:33:28 2020
committer Commit Bot <commit-bot@chromium.org> Fri Nov 13 15:33:28 2020
tree 68177d07c36e43f6b7b3dfa5f66501ded22f2b51
parent 131a0fdc9730ef33bf03e4dbbed209b9cc27a81f

Never treat the focused element as invisible or ignored for accessibility.

AXPlatformNodeBase::IsInvisibleOrIgnored is used to determine if, and
how an element should be exposed to platform assistive technologies.
It was not taking into account if the element in question was focused.
As a result, if an author set aria-hidden to "true" on an ancestor of
a focused widget, assistive technologies might not be able to obtain
the selected text or receive the expected notifications when the text
or caret offset changes.

Because it is considered an authoring error to "hide" the focused
element from assistive technologies, modify IsInvisibleOrIgnored to
return false when the node is focused.

Ax-Relnotes: Improves accessibility of focused widgets which have been
incorrectly marked as hidden due to authoring error.

Bug: 1144707
Change-Id: Id97053c1cddf3fa91518aa9950f4bb8ba2ca003a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2521570
Commit-Queue: Joanmarie Diggs <jdiggs@igalia.com>
Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
Reviewed-by: Aaron Leventhal <aleventhal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#827262}