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Remove event handlers when attribute is removed (#38734)

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We wouldn't handle the AttributeMutation::Removed for
attribute event listeners and wouldn't remove the
corresponding event listener. Added the necessary
logic (using the newly EventTarget::is_content_event_handler
to correctly only do this for known event handlers) and
added links to the relevant parts of the spec.

Signed-off-by: Tim van der Lippe <tvanderlippe@gmail.com>
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Tim van der Lippe 2025-08-22 21:43:04 +02:00 • committed by GitHub
parent 1ad0ad6f25
commit f334a56b07
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7 changed files with 38 additions and 55 deletions
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4
components/script_bindings/webidls/EventHandler.webidl
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@ -107,8 +107,10 @@ interface mixin GlobalEventHandlers {
// https://drafts.csswg.org/css-animations/#interface-globaleventhandlers-idl
partial interface mixin GlobalEventHandlers {
attribute EventHandler onanimationend;
attribute EventHandler onanimationstart;
attribute EventHandler onanimationiteration;
attribute EventHandler onanimationend;
attribute EventHandler onanimationcancel;
};
// https://drafts.csswg.org/css-transitions/#interface-globaleventhandlers-idl