tree e62f5551f885c755de9935a4ac72f759e5b4af1d
parent bdd3b533e8c995e416630422ad64f4c70086b42f
author Masayuki Nakano <masayuki@d-toybox.com> 1706289513 +0000
committer moz-wptsync-bot <wptsync@mozilla.com> 1706443024 +0000

Make `EventStateManager` dispatch `mouseleave` events on ancestors even after the last `mouseover` target is removed

Currently, `EventStateManager` clears the last `mouseover` element when it's
removed from the tree.  Therefore, it does not fire `mouseleave` events when
the cursor moves outside of ancestors which a `mouseenter` event is fired on.

This patch makes `EventStateManager` keep storing the parent of removing content
node which is an inclusive ancestor of the last `mouseover` target.

The following patch will make the code easier to read.

Differential Revision: https://phabricator.services.mozilla.com/D199198

bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1875424
gecko-commit: a85c761473a6b5e10a874c9999d4b31133feebcd
gecko-reviewers: smaug