[webkit-changes] [WebKit/WebKit] cbf750: AX: VoiceOver highlight does not move to Shadow DO...

[EWS]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: cbf7509a12dfb20efcf128f99ea2788f92622526
      https://github.com/WebKit/WebKit/commit/cbf7509a12dfb20efcf128f99ea2788f92622526
  Author: Tommy McHugh <thomas_mchugh at apple.com>
  Date:   2022-11-10 (Thu, 10 Nov 2022)

  Changed paths:
    A LayoutTests/accessibility/shadow-dom-element-in-aria-modal-expected.txt
    A LayoutTests/accessibility/shadow-dom-element-in-aria-modal.html
    M Source/WebCore/accessibility/AccessibilityObject.cpp

  Log Message:
  -----------
  AX: VoiceOver highlight does not move to Shadow DOM button when using aria-modal and role
https://bugs.webkit.org/show_bug.cgi?id=247134
rdar://problem/101637934

Reviewed by Andres Gonzalez.

AccessibilityObject::isModalDescendant eroneuously returned false for shadow hosts
inside the modal because the template code is outside the modal. This patch fixes
that by using Node::isDescendantOrShadowDescendantOf to properly consider shadow DOM elements.

* LayoutTests/accessibility/shadow-dom-element-in-aria-modal-expected.txt: Added.
* LayoutTests/accessibility/shadow-dom-element-in-aria-modal.html: Added.
* Source/WebCore/accessibility/AccessibilityObject.cpp:
(WebCore::AccessibilityObject::isModalDescendant const):

Canonical link: https://commits.webkit.org/256531@main