Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 20485662bb03f2f299223e7bde2dcc7aa1f01923
      
https://github.com/WebKit/WebKit/commit/20485662bb03f2f299223e7bde2dcc7aa1f01923
  Author: Ryosuke Niwa <[email protected]>
  Date:   2026-02-18 (Wed, 18 Feb 2026)

  Changed paths:
    M Source/WebCore/dom/Element.cpp
    M Source/WebCore/dom/Element.h
    M Source/WebCore/dom/Event.cpp
    M Source/WebCore/dom/Event.h
    M Source/WebCore/dom/EventNames.json
    M Source/WebCore/dom/EventTarget.cpp
    M Source/WebCore/dom/MutationObserver.cpp
    M Source/WebCore/dom/MutationObserver.h
    M Source/WebCore/dom/Node.h
    M Source/WebCore/dom/WindowEventLoop.h
    M Tools/TestWebKitAPI/Tests/WebKitCocoa/UserContentController.mm

  Log Message:
  -----------
  Remove the support for webkitshadowrootattached event
https://bugs.webkit.org/show_bug.cgi?id=308111

Reviewed by Anne van Kesteren.

Removed the code for this failed experiment.

No new tests but removed the existing 
WKUserContentController.ShadowRootAttachedEvent.

* Source/WebCore/dom/Element.cpp:
(WebCore::Element::addShadowRoot):
(WebCore::Element::enqueueShadowRootAttachedEvent): Deleted.
(WebCore::Element::dispatchShadowRootAttachedEvent): Deleted.
* Source/WebCore/dom/Element.h:
(WebCore::Element::didDispatchShadowRootAttachedEvent): Deleted.
* Source/WebCore/dom/Event.cpp:
* Source/WebCore/dom/Event.h:
(WebCore::Event::isShadowRootAttachedEvent): Deleted.
(WebCore::Event::setIsShadowRootAttachedEvent): Deleted.
* Source/WebCore/dom/EventNames.json:
* Source/WebCore/dom/EventTarget.cpp:
(WebCore::EventTarget::innerInvokeEventListeners):
* Source/WebCore/dom/MutationObserver.cpp:
(WebCore::MutationObserver::notifyMutationObservers):
(WebCore::MutationObserver::enqueueShadowRootAttachedEvent): Deleted.
* Source/WebCore/dom/MutationObserver.h:
* Source/WebCore/dom/Node.h:
* Source/WebCore/dom/WindowEventLoop.h:
* Tools/TestWebKitAPI/Tests/WebKitCocoa/UserContentController.mm:
(TEST(WKUserContentController, ShadowRootAttachedEvent)): Deleted.

Canonical link: https://commits.webkit.org/307750@main



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