[webkit-changes] [WebKit/WebKit] 8f927a: Make custom elements's default ARIA id-ref work wi...

[Ryosuke Niwa]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 8f927ad0d4312332b9c76c0b2219e02da04a202b
      https://github.com/WebKit/WebKit/commit/8f927ad0d4312332b9c76c0b2219e02da04a202b
  Author: Ryosuke Niwa <rniwa at webkit.org>
  Date:   2022-09-22 (Thu, 22 Sep 2022)

  Changed paths:
    A LayoutTests/accessibility/custom-elements/controls-shadow-expected.txt
    A LayoutTests/accessibility/custom-elements/controls-shadow.html
    A LayoutTests/accessibility/custom-elements/describedby-shadow-expected.txt
    A LayoutTests/accessibility/custom-elements/describedby-shadow.html
    A LayoutTests/accessibility/custom-elements/flowto-shadow-expected.txt
    A LayoutTests/accessibility/custom-elements/flowto-shadow.html
    A LayoutTests/accessibility/custom-elements/menuitem-shadow-expected.txt
    A LayoutTests/accessibility/custom-elements/menuitem-shadow.html
    M Source/WebCore/accessibility/AXObjectCache.cpp
    M Source/WebCore/accessibility/AXObjectCache.h
    M Source/WebCore/dom/CustomElementDefaultARIA.cpp

  Log Message:
  -----------
  Make custom elements's default ARIA id-ref work with shadow DOM
https://bugs.webkit.org/show_bug.cgi?id=245467

Reviewed by Manuel Rego Casasnovas.

Make ElementInternals's id-ref ARIA attributes work with shadow DOM by recursively updating
relations between AX objects in AXObjectCache::updateRelationsIfNeeded.

* LayoutTests/accessibility/custom-elements/controls-shadow-expected.txt: Added.
* LayoutTests/accessibility/custom-elements/controls-shadow.html: Added.
* LayoutTests/accessibility/custom-elements/describedby-shadow-expected.txt: Added.
* LayoutTests/accessibility/custom-elements/describedby-shadow.html: Added.
* LayoutTests/accessibility/custom-elements/flowto-shadow-expected.txt: Added.
* LayoutTests/accessibility/custom-elements/flowto-shadow.html: Added.
* LayoutTests/accessibility/custom-elements/menuitem-shadow-expected.txt: Added.
* LayoutTests/accessibility/custom-elements/menuitem-shadow.html: Added.

* Source/WebCore/accessibility/AXObjectCache.cpp:
(WebCore::AXObjectCache::updateRelationsIfNeeded):
(WebCore::AXObjectCache::updateRelationsForTree): Extracted from updateRelationsIfNeeded.
* Source/WebCore/accessibility/AXObjectCache.h:

* Source/WebCore/dom/CustomElementDefaultARIA.cpp:
(WebCore::isElementVisible): Fixed a bug that this function returns false when
"thisElement" is disconnected but element is in the document tree.

Canonical link: https://commits.webkit.org/254762@main