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LibWeb: Pass scope in Element::closest

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Simon Wanner 2023-03-20 23:45:31 +01:00 • committed by Andreas Kling
parent d55373067d
commit f3ba44a9f2
1 changed files with 9 additions and 2 deletions
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11
Userland/Libraries/LibWeb/DOM/Element.cpp
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@ -551,19 +551,25 @@ WebIDL::ExceptionOr<bool> Element::matches(StringView selectors) const
// https://dom.spec.whatwg.org/#dom-element-closest
WebIDL::ExceptionOr<DOM::Element const*> Element::closest(StringView selectors) const
{
// 1. Let s be the result of parse a selector from selectors.
auto maybe_selectors = parse_selector(CSS::Parser::ParsingContext(static_cast<ParentNode&>(const_cast<Element&>(*this))), selectors);
// 2. If s is failure, then throw a "SyntaxError" DOMException.
if (!maybe_selectors.has_value())
return WebIDL::SyntaxError::create(realm(), "Failed to parse selector");
auto matches_selectors = [](CSS::SelectorList const& selector_list, Element const* element) {
auto matches_selectors = [this](CSS::SelectorList const& selector_list, Element const* element) {
// 4. For each element in elements, if match a selector against an element, using s, element, and scoping root this, returns success, return element.
for (auto& selector : selector_list) {
if (!SelectorEngine::matches(selector, *element))
if (!SelectorEngine::matches(selector, *element, {}, this))
return false;
}
return true;
};
auto const selector_list = maybe_selectors.release_value();
// 3. Let elements be this’s inclusive ancestors that are elements, in reverse tree order.
for (auto* element = this; element; element = element->parent_element()) {
if (!matches_selectors(selector_list, element))
continue;
@ -571,6 +577,7 @@ WebIDL::ExceptionOr<DOM::Element const*> Element::closest(StringView selectors)
return element;
}
// 5. Return null.
return nullptr;
}