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51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
/*
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* Copyright (c) 2023, Luke Wilde <lukew@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 <LibWeb/SVG/AttributeNames.h>
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#include <LibWeb/SVG/SVGAnimatedString.h>
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namespace Web::SVG {
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enum class SupportsXLinkHref {
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No,
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Yes,
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};
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// https://svgwg.org/svg2-draft/types.html#InterfaceSVGURIReference
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template<SupportsXLinkHref supports_xlink_href>
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class SVGURIReferenceMixin {
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public:
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virtual ~SVGURIReferenceMixin() = default;
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JS::NonnullGCPtr<SVGAnimatedString> href()
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{
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// The href IDL attribute represents the value of the ‘href’ attribute, and, on elements that are defined to support
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// it, the deprecated ‘xlink:href’ attribute. On getting href, an SVGAnimatedString object is returned that:
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// - reflects the ‘href’ attribute, and
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// - if the element is defined to support the deprecated ‘xlink:href’ attribute, additionally reflects that
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// deprecated attribute.
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if (!m_href_animated_string) {
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auto* this_svg_element = dynamic_cast<SVGElement*>(this);
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VERIFY(this_svg_element);
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m_href_animated_string = SVGAnimatedString::create(this_svg_element->realm(), *this_svg_element, AttributeNames::href, supports_xlink_href == SupportsXLinkHref::Yes ? Optional<FlyString> { AttributeNames::xlink_href } : OptionalNone {});
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}
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return *m_href_animated_string;
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}
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protected:
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void visit_edges(JS::Cell::Visitor& visitor)
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{
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visitor.visit(m_href_animated_string);
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}
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private:
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JS::GCPtr<SVGAnimatedString> m_href_animated_string;
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};
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}
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