b67f6daf05
This is similar to how Gecko avoids a reference cycle, where both the NamedNodeMap and Attribute would otherwise store a strong reference to their associated Element. Gecko manually clears stored raw references when an Element is destroyed, whereas we use weak references to do so automatically. Attribute's ownerElement getter and setter are moved out of line to avoid an #include cycle between Element and Attribute.
49 lines
1.4 KiB
C++
49 lines
1.4 KiB
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.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/WeakPtr.h>
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#include <LibWeb/DOM/Node.h>
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#include <LibWeb/QualifiedName.h>
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namespace Web::DOM {
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// https://dom.spec.whatwg.org/#attr
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class Attribute final : public Node {
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public:
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using WrapperType = Bindings::AttributeWrapper;
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static NonnullRefPtr<Attribute> create(Document&, FlyString local_name, String value, Element const* = nullptr);
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virtual ~Attribute() override = default;
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virtual FlyString node_name() const override { return name(); }
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FlyString const& namespace_uri() const { return m_qualified_name.namespace_(); }
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FlyString const& prefix() const { return m_qualified_name.prefix(); }
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FlyString const& local_name() const { return m_qualified_name.local_name(); }
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String const& name() const { return m_qualified_name.as_string(); }
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String const& value() const { return m_value; }
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void set_value(String value) { m_value = move(value); }
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Element const* owner_element() const;
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void set_owner_element(Element const* owner_element);
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// Always returns true: https://dom.spec.whatwg.org/#dom-attr-specified
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constexpr bool specified() const { return true; }
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private:
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Attribute(Document&, FlyString local_name, String value, Element const*);
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QualifiedName m_qualified_name;
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String m_value;
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WeakPtr<Element> m_owner_element;
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};
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}
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