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			86 lines
		
	
	
	
		
			2.3 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			86 lines
		
	
	
	
		
			2.3 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
/*
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 * Copyright (c) 2021, the SerenityOS developers.
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 * Copyright (c) 2022, Andreas Kling <andreas@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/String.h>
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#include <LibGC/Ptr.h>
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#include <LibWeb/Bindings/PlatformObject.h>
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#include <LibWeb/CSS/CSSStyleDeclaration.h>
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#include <LibWeb/CSS/Selector.h>
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#include <LibWeb/WebIDL/Types.h>
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namespace Web::CSS {
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class CSSRule : public Bindings::PlatformObject {
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    WEB_PLATFORM_OBJECT(CSSRule, Bindings::PlatformObject);
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public:
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    virtual ~CSSRule() = default;
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    // https://drafts.csswg.org/cssom/#dom-cssrule-type
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    enum class Type : WebIDL::UnsignedShort {
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        Style = 1,
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        Import = 3,
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        Media = 4,
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        FontFace = 5,
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        Page = 6,
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        Keyframes = 7,
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        Keyframe = 8,
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        Margin = 9,
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        Namespace = 10,
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        Supports = 12,
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        // AD-HOC: These are not included in the spec, but we need them internally. So, their numbers are arbitrary.
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        LayerBlock = 100,
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        LayerStatement = 101,
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        NestedDeclarations = 102,
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        Property = 103,
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    };
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    Type type() const { return m_type; }
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    WebIDL::UnsignedShort type_for_bindings() const;
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    String css_text() const;
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    void set_css_text(StringView);
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    CSSRule* parent_rule() { return m_parent_rule.ptr(); }
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    CSSRule const* parent_rule() const { return m_parent_rule.ptr(); }
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    void set_parent_rule(CSSRule*);
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    CSSStyleSheet* parent_style_sheet() { return m_parent_style_sheet.ptr(); }
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    virtual void set_parent_style_sheet(CSSStyleSheet*);
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    template<typename T>
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    bool fast_is() const = delete;
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    // https://drafts.csswg.org/cssom-1/#serialize-a-css-rule
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    virtual String serialized() const = 0;
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    virtual void clear_caches();
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protected:
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    CSSRule(JS::Realm&, Type);
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    virtual void visit_edges(Cell::Visitor&) override;
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    [[nodiscard]] FlyString const& parent_layer_internal_qualified_name() const
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    {
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        if (!m_cached_layer_name.has_value())
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            return parent_layer_internal_qualified_name_slow_case();
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        return m_cached_layer_name.value();
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    }
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    [[nodiscard]] FlyString const& parent_layer_internal_qualified_name_slow_case() const;
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    Type m_type;
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    GC::Ptr<CSSRule> m_parent_rule;
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    GC::Ptr<CSSStyleSheet> m_parent_style_sheet;
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    mutable Optional<FlyString> m_cached_layer_name;
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};
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}
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