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4bc3055c0f
We don't have to invalidate style for the entire document when a style sheet changes inside of a shadow root. To make this possible, StyleSheetList now keeps track of which Document-or-ShadowRoot it corresponds to, instead of just tracking the containing Document. This avoids a lot of style recomputation on pages with lots of shadow DOM content (like GitHub).
64 lines
2.3 KiB
C++
64 lines
2.3 KiB
C++
/*
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* Copyright (c) 2020-2024, Andreas Kling <andreas@ladybird.org>
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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/Bindings/PlatformObject.h>
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#include <LibWeb/CSS/CSSStyleSheet.h>
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namespace Web::CSS {
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class StyleSheetList final : public Bindings::PlatformObject {
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WEB_PLATFORM_OBJECT(StyleSheetList, Bindings::PlatformObject);
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JS_DECLARE_ALLOCATOR(StyleSheetList);
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public:
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[[nodiscard]] static JS::NonnullGCPtr<StyleSheetList> create(JS::NonnullGCPtr<DOM::Node> document_or_shadow_root);
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void add_a_css_style_sheet(CSS::CSSStyleSheet&);
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void remove_a_css_style_sheet(CSS::CSSStyleSheet&);
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void create_a_css_style_sheet(String type, DOM::Element* owner_node, String media, String title, bool alternate, bool origin_clean, Optional<String> location, CSS::CSSStyleSheet* parent_style_sheet, CSS::CSSRule* owner_rule, CSS::CSSStyleSheet&);
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Vector<JS::NonnullGCPtr<CSSStyleSheet>> const& sheets() const { return m_sheets; }
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Vector<JS::NonnullGCPtr<CSSStyleSheet>>& sheets() { return m_sheets; }
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CSSStyleSheet* item(size_t index) const
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{
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if (index >= m_sheets.size())
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return {};
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return const_cast<CSSStyleSheet*>(m_sheets[index].ptr());
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}
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size_t length() const { return m_sheets.size(); }
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virtual Optional<JS::Value> item_value(size_t index) const override;
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[[nodiscard]] DOM::Document& document();
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[[nodiscard]] DOM::Document const& document() const;
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[[nodiscard]] DOM::Node& document_or_shadow_root() { return m_document_or_shadow_root; }
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[[nodiscard]] DOM::Node const& document_or_shadow_root() const { return m_document_or_shadow_root; }
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private:
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explicit StyleSheetList(JS::NonnullGCPtr<DOM::Node> document_or_shadow_root);
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virtual void initialize(JS::Realm&) override;
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virtual void visit_edges(Cell::Visitor&) override;
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void add_sheet(CSSStyleSheet&);
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void remove_sheet(CSSStyleSheet&);
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JS::NonnullGCPtr<DOM::Node> m_document_or_shadow_root;
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Vector<JS::NonnullGCPtr<CSSStyleSheet>> m_sheets;
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// https://www.w3.org/TR/cssom/#preferred-css-style-sheet-set-name
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String m_preferred_css_style_sheet_set_name;
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// https://www.w3.org/TR/cssom/#last-css-style-sheet-set-name
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Optional<String> m_last_css_style_sheet_set_name;
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};
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}
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