[webkit-changes] [WebKit/WebKit] 189024: <object> element shouldn't override FormListedElem...

[EWS]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 189024a1815a58b3ee79bb3fe3d27dc4c6ccf82b
      https://github.com/WebKit/WebKit/commit/189024a1815a58b3ee79bb3fe3d27dc4c6ccf82b
  Author: Alexey Shvayka <ashvayka at apple.com>
  Date:   2023-01-16 (Mon, 16 Jan 2023)

  Changed paths:
    M LayoutTests/fast/forms/setCustomValidity-null-parameter.html
    M LayoutTests/imported/w3c/web-platform-tests/html/semantics/embedded-content/the-object-element/object-setcustomvalidity-expected.txt
    M Source/WebCore/html/HTMLObjectElement.h

  Log Message:
  -----------
  <object> element shouldn't override FormListedElement::setCustomValidity()
https://bugs.webkit.org/show_bug.cgi?id=250627

Reviewed by Darin Adler.

Per spec [1], <object> element's constraint validation methods are the same as for other objects.

This change removes setCustomValidity() override, allowing <object> element's customError()
to be triggered, which aligns <object> with all the other elements: their validity states
are independent of willValidate().

Removal of validationMessage() override is non-observable: the message can't be retrieved for
an element that is not a candidate for constraint validation [2].

Aligns WebKit with the spec and Gecko.

[1] https://html.spec.whatwg.org/multipage/iframe-embed-object.html#the-object-element:the-constraint-validation-api
[2] https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-cva-validationmessage

* LayoutTests/fast/forms/setCustomValidity-null-parameter.html:
* LayoutTests/imported/w3c/web-platform-tests/html/semantics/embedded-content/the-object-element/object-setcustomvalidity-expected.txt:
* Source/WebCore/html/HTMLObjectElement.h:

Canonical link: https://commits.webkit.org/258945@main