[webkit-changes] [WebKit/WebKit] 7c77ae: Disconnected <fieldset> elements sometimes incorre...

[EWS]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 7c77ae89409598c580a9d814b12d21a6cf71a31c
      https://github.com/WebKit/WebKit/commit/7c77ae89409598c580a9d814b12d21a6cf71a31c
  Author: Alexey Shvayka <ashvayka at apple.com>
  Date:   2023-01-26 (Thu, 26 Jan 2023)

  Changed paths:
    A LayoutTests/imported/w3c/web-platform-tests/html/semantics/selectors/pseudo-classes/valid-invalid-fieldset-disconnected-expected.txt
    A LayoutTests/imported/w3c/web-platform-tests/html/semantics/selectors/pseudo-classes/valid-invalid-fieldset-disconnected.html
    M Source/WebCore/html/ValidatedFormListedElement.cpp

  Log Message:
  -----------
  Disconnected <fieldset> elements sometimes incorrectly match :valid / :invalid selectors
https://bugs.webkit.org/show_bug.cgi?id=250936

Reviewed by Ryosuke Niwa.

This change removes isConnected() checks from updateValidity() so that form controls in disconnected
subtrees update validity status of their <fieldset> ancestors, like they do for form owners,
aligning WebKit with the spec [1], Blink, and Gecko.

[1] https://html.spec.whatwg.org/multipage/semantics-other.html#selector-valid (no connected-ness check)

* LayoutTests/imported/w3c/web-platform-tests/html/semantics/selectors/pseudo-classes/valid-invalid-fieldset-disconnected-expected.txt: Added.
* LayoutTests/imported/w3c/web-platform-tests/html/semantics/selectors/pseudo-classes/valid-invalid-fieldset-disconnected.html: Added.
* Source/WebCore/html/ValidatedFormListedElement.cpp:
(WebCore::ValidatedFormListedElement::updateValidity):

Canonical link: https://commits.webkit.org/259422@main