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LibWeb/HTML: Teach MessageEvent to work with origins

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Corresponds to whatwg/html@748b068c7c

Which fixes the Origin.from() handling for MessageEvent's.
This commit is contained in:
Shannon Booth
2026-03-17 06:55:56 +01:00
committed by Shannon Booth
parent fa1c046e68
commit a0878ec057
Notes: github-actions[bot] 2026-03-23 21:33:47 +00:00 
Author: https://github.com/shannonbooth
Commit: https://github.com/LadybirdBrowser/ladybird/commit/a0878ec0571
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/8458
7 changed files with 57 additions and 30 deletions
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28
Libraries/LibWeb/HTML/MessageEvent.cpp
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@@ -68,6 +68,24 @@ void MessageEvent::visit_edges(Cell::Visitor& visitor)
[&](auto const& ref) { visitor.visit(ref); });
}
// https://html.spec.whatwg.org/multipage/comms.html#dom-messageevent-origin
String MessageEvent::origin() const
{
return m_origin.visit(
// 1. If this's origin is an origin, then return the serialization of this's origin.
[](URL::Origin const& origin) {
return origin.serialize();
},
// 2. If this's origin is null, then return the empty string.
[](Empty) {
return String {};
},
// 3. Return this's origin.
[](String const& origin) {
return origin;
});
}
MessageEvent::SourceResult MessageEvent::source() const
{
return m_source.visit(
@@ -119,8 +137,14 @@ void MessageEvent::init_message_event(String const& type, bool bubbles, bool can
// https://html.spec.whatwg.org/multipage/comms.html#the-messageevent-interface:extract-an-origin
Optional<URL::Origin> MessageEvent::extract_an_origin() const
{
// Objects implementing the MessageEvent interface's extract an origin steps are to return this's relevant settings object's origin.
return relevant_settings_object(*this).origin();
// Objects implementing the MessageEvent interface's extract an origin steps are to return this's origin if it is an origin; otherwise null.
return m_origin.visit(
[](URL::Origin const& origin) -> Optional<URL::Origin> {
return origin;
},
[](auto const&) -> Optional<URL::Origin> {
return {};
});
}
}