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LibWeb: Support Element.matches(selectors)
This returns whether an element matches any of a set of selectors.
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3 changed files with 20 additions and 0 deletions
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@ -9,6 +9,7 @@
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#include <LibWeb/CSS/Parser/Parser.h>
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#include <LibWeb/CSS/PropertyID.h>
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#include <LibWeb/CSS/ResolvedCSSStyleDeclaration.h>
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#include <LibWeb/CSS/SelectorEngine.h>
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#include <LibWeb/CSS/StyleInvalidator.h>
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#include <LibWeb/DOM/DOMException.h>
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#include <LibWeb/DOM/Document.h>
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@ -247,6 +248,21 @@ NonnullRefPtr<CSS::StyleProperties> Element::computed_style()
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return properties;
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}
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// https://dom.spec.whatwg.org/#dom-element-matches
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DOM::ExceptionOr<bool> Element::matches(StringView selectors) const
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{
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auto maybe_selectors = parse_selector(CSS::ParsingContext(static_cast<ParentNode&>(const_cast<Element&>(*this))), selectors);
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if (!maybe_selectors.has_value())
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return DOM::SyntaxError::create("Failed to parse selector");
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auto sel = maybe_selectors.value();
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for (auto& s : sel) {
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if (SelectorEngine::matches(s, *this))
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return true;
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}
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return false;
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}
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ExceptionOr<void> Element::set_inner_html(String const& markup)
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{
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auto result = DOMParsing::InnerHTML::inner_html_setter(*this, markup);
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@ -56,6 +56,8 @@ public:
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void remove_attribute(const FlyString& name);
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size_t attribute_list_size() const { return m_attributes.size(); }
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DOM::ExceptionOr<bool> matches(StringView selectors) const;
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template<typename Callback>
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void for_each_attribute(Callback callback) const
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{
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@ -20,6 +20,8 @@ interface Element : Node {
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[Reflect] attribute DOMString id;
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[Reflect=class] attribute DOMString className;
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boolean matches(DOMString selectors);
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readonly attribute Element? nextElementSibling;
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readonly attribute Element? previousElementSibling;
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