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LibWeb: Make WindowObject's prototype immutable

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While I was implementing IDL special operations, I noticed that for
global platform objects (e.g. WindowObject), the IDL spec makes their
prototype immutable.

https://heycam.github.io/webidl/#platform-object-setprototypeof
This commit is contained in:
Luke Wilde 2021-09-26 15:26:30 +01:00 • committed by Andreas Kling
parent f6b24a72ee
commit e0e41116a4
2 changed files with 9 additions and 0 deletions
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7
Userland/Libraries/LibWeb/Bindings/WindowObject.cpp
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@ -136,6 +136,13 @@ Origin WindowObject::origin() const
return impl().associated_document().origin();
}
// https://heycam.github.io/webidl/#platform-object-setprototypeof
bool WindowObject::internal_set_prototype_of(JS::Object* prototype)
{
// 1. Return ? SetImmutablePrototype(O, V).
return set_immutable_prototype(prototype);
}
static DOM::Window* impl_from(JS::VM& vm, JS::GlobalObject& global_object)
{
// Since this is a non built-in function we must treat it as non-strict mode