Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 66ebec86604f2eba2d21cc106d1ea7999faf06fb
https://github.com/WebKit/WebKit/commit/66ebec86604f2eba2d21cc106d1ea7999faf06fb
Author: Tyler Wilcock <[email protected]>
Date: 2026-07-01 (Wed, 01 Jul 2026)
Changed paths:
A
LayoutTests/accessibility/aria-labelledby-updates-when-aria-label-changes-expected.txt
A
LayoutTests/accessibility/aria-labelledby-updates-when-aria-label-changes.html
M Source/WebCore/accessibility/AXObjectCache.cpp
Log Message:
-----------
AX: VoiceOver does not re-resolve aria-labelledby when referenced element's
accessible name is provided by aria-label
https://bugs.webkit.org/show_bug.cgi?id=317597
rdar://180319221
Reviewed by Dominic Mazzoni.
When an element references another via aria-labelledby, its accessible name
was not recomputed if the referenced element's name changed via aria-label
(or alt/title) — only text-content changes propagated. In the isolated tree
this left a stale cached name.
AXObjectCache::handleTextChanged walks the changed object's ancestors and
notifies the objects each one labels (labelForObjects()) so their names get
recomputed. That propagation was gated behind `if (isText)`, but aria-label,
alt, and title changes reach handleTextChanged with a non-static-text object,
so the labelledby referrer was never notified.
Hoist the labelForObjects() propagation out of the isText block so it runs for
every text/name change.
*
LayoutTests/accessibility/aria-labelledby-updates-when-aria-label-changes-expected.txt:
Added.
*
LayoutTests/accessibility/aria-labelledby-updates-when-aria-label-changes.html:
Added.
* Source/WebCore/accessibility/AXObjectCache.cpp:
(WebCore::AXObjectCache::handleTextChanged):
Canonical link: https://commits.webkit.org/316316@main
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