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LibWeb: Pass scope in ParentNode::query_selector

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Simon Wanner 2023-03-20 23:48:59 +01:00 • committed by Andreas Kling
parent f3ba44a9f2
commit 4e6fb65ea3
1 changed files with 11 additions and 1 deletions
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12
Userland/Libraries/LibWeb/DOM/ParentNode.cpp
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@ -17,19 +17,29 @@
namespace Web::DOM {
// https://dom.spec.whatwg.org/#dom-parentnode-queryselector
WebIDL::ExceptionOr<JS::GCPtr<Element>> ParentNode::query_selector(StringView selector_text)
{
// The querySelector(selectors) method steps are to return the first result of running scope-match a selectors string selectors against this,
// if the result is not an empty list; otherwise null.
// https://dom.spec.whatwg.org/#scope-match-a-selectors-string
// To scope-match a selectors string selectors against a node, run these steps:
// 1. Let s be the result of parse a selector selectors.
auto maybe_selectors = parse_selector(CSS::Parser::ParsingContext(*this), selector_text);
// 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 selectors = maybe_selectors.value();
// 3. Return the result of match a selector against a tree with s and node’s root using scoping root node.
JS::GCPtr<Element> result;
// FIXME: This should be shadow-including. https://drafts.csswg.org/selectors-4/#match-a-selector-against-a-tree
for_each_in_subtree_of_type<Element>([&](auto& element) {
for (auto& selector : selectors) {
if (SelectorEngine::matches(selector, element)) {
if (SelectorEngine::matches(selector, element, {}, this)) {
result = &element;
return IterationDecision::Break;
}