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https://github.com/LadybirdBrowser/ladybird
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00397b4808
We maintain a registry of elements with an anchor-name so once they are referenced for anchor positioning, we can find them with an O(1) lookup instead of traversing the entire DOM tree.
31 lines
721 B
C++
31 lines
721 B
C++
/*
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* Copyright (c) 2026, Jelle Raaijmakers <jelle@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/FlyString.h>
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#include <AK/HashMap.h>
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#include <LibGC/Ptr.h>
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#include <LibWeb/Forward.h>
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namespace Web::DOM {
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// https://drafts.csswg.org/css-anchor-position-1/#typedef-anchor-name
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class AnchorNameMap {
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public:
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void register_name(FlyString const& name, GC::Ref<Element>);
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void unregister_name(FlyString const& name, GC::Ref<Element>);
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GC::Ptr<Element> element_by_name(FlyString const& name) const;
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template<typename Visitor>
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void visit_edges(Visitor& visitor) { visitor.visit(m_map); }
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private:
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HashMap<FlyString, Vector<GC::Ref<Element>>> m_map;
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};
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}
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