[webkit-changes] [WebKit/WebKit] 933684: [popover] Using shadow DOM wrongly auto-hides popo...

[Tim Nguyen]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 9336846dfe3b1aa8aef399106cb63883e72177b8
      https://github.com/WebKit/WebKit/commit/9336846dfe3b1aa8aef399106cb63883e72177b8
  Author: Tim Nguyen <ntim at apple.com>
  Date:   2023-07-31 (Mon, 31 Jul 2023)

  Changed paths:
    A LayoutTests/imported/w3c/web-platform-tests/html/semantics/popovers/popover-light-dismiss-flat-tree-expected.txt
    A LayoutTests/imported/w3c/web-platform-tests/html/semantics/popovers/popover-light-dismiss-flat-tree.html
    M Source/WebCore/dom/Document.cpp

  Log Message:
  -----------
  [popover] Using shadow DOM wrongly auto-hides popover by light dismiss
https://bugs.webkit.org/show_bug.cgi?id=259261
rdar://112410375

Reviewed by Ryosuke Niwa and Darin Adler.

Use the flat tree as mandated by the spec when calculating which popover to light dismiss:
- https://html.spec.whatwg.org/#topmost-clicked-popover
- https://html.spec.whatwg.org/#nearest-inclusive-open-popover
- https://html.spec.whatwg.org/#nearest-inclusive-target-popover-for-invoker

* LayoutTests/imported/w3c/web-platform-tests/html/semantics/popovers/popover-light-dismiss-flat-tree-expected.txt: Added.
* LayoutTests/imported/w3c/web-platform-tests/html/semantics/popovers/popover-light-dismiss-flat-tree.html: Added.
* Source/WebCore/dom/Document.cpp:
(WebCore::Document::handlePopoverLightDismiss):

Canonical link: https://commits.webkit.org/266457@main