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LibWeb: Implement [SameObject] behavior for HTMLFormElement.elements

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This commit is contained in:
Andreas Kling
2022-11-24 19:04:05 +01:00
parent 7d8ff0c581
commit d7c58aa58d
3 changed files with 11 additions and 7 deletions
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12
Userland/Libraries/LibWeb/HTML/HTMLFormElement.cpp
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@@ -33,6 +33,7 @@ HTMLFormElement::~HTMLFormElement() = default;
void HTMLFormElement::visit_edges(Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_elements);
for (auto& element : m_associated_elements)
visitor.visit(element.ptr());
}
@@ -185,11 +186,12 @@ static bool is_form_control(DOM::Element const& element)
// https://html.spec.whatwg.org/multipage/forms.html#dom-form-elements
JS::NonnullGCPtr<DOM::HTMLCollection> HTMLFormElement::elements() const
{
// FIXME: This should return the same HTMLFormControlsCollection object every time,
// but that would cause a reference cycle since HTMLCollection refs the root.
return DOM::HTMLCollection::create(const_cast<HTMLFormElement&>(*this), [](Element const& element) {
return is_form_control(element);
});
if (!m_elements) {
m_elements = DOM::HTMLCollection::create(const_cast<HTMLFormElement&>(*this), [](Element const& element) {
return is_form_control(element);
});
}
return *m_elements;
}
// https://html.spec.whatwg.org/multipage/forms.html#dom-form-length