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76 lines
2.8 KiB
C++
76 lines
2.8 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <andreas@ladybird.org>
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* Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
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* Copyright (c) 2021-2024, Sam Atkins <sam@ladybird.org>
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* Copyright (c) 2022-2023, MacDue <macdue@dueutil.tech>
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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/CSS/CSSStyleValue.h>
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#include <LibWeb/CSS/Keyword.h>
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namespace Web::CSS {
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// https://drafts.css-houdini.org/css-typed-om-1/#csskeywordvalue
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class CSSKeywordValue : public StyleValueWithDefaultOperators<CSSKeywordValue> {
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public:
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static ValueComparingNonnullRefPtr<CSSKeywordValue const> create(Keyword keyword)
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{
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// NOTE: We'll have to be much more careful with caching once we expose CSSKeywordValue to JS, as it's mutable.
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switch (keyword) {
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case Keyword::Inherit: {
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static ValueComparingNonnullRefPtr<CSSKeywordValue const> const inherit_instance = adopt_ref(*new (nothrow) CSSKeywordValue(Keyword::Inherit));
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return inherit_instance;
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}
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case Keyword::Initial: {
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static ValueComparingNonnullRefPtr<CSSKeywordValue const> const initial_instance = adopt_ref(*new (nothrow) CSSKeywordValue(Keyword::Initial));
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return initial_instance;
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}
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case Keyword::Revert: {
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static ValueComparingNonnullRefPtr<CSSKeywordValue const> const revert_instance = adopt_ref(*new (nothrow) CSSKeywordValue(Keyword::Revert));
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return revert_instance;
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}
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case Keyword::RevertLayer: {
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static ValueComparingNonnullRefPtr<CSSKeywordValue const> const revert_layer_instance = adopt_ref(*new (nothrow) CSSKeywordValue(Keyword::RevertLayer));
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return revert_layer_instance;
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}
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case Keyword::Unset: {
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static ValueComparingNonnullRefPtr<CSSKeywordValue const> const unset_instance = adopt_ref(*new (nothrow) CSSKeywordValue(Keyword::Unset));
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return unset_instance;
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}
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default:
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return adopt_ref(*new (nothrow) CSSKeywordValue(keyword));
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}
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}
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virtual ~CSSKeywordValue() override = default;
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Keyword keyword() const { return m_keyword; }
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static bool is_color(Keyword);
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virtual bool has_color() const override;
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virtual Color to_color(Optional<Layout::NodeWithStyle const&> node) const override;
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virtual String to_string(SerializationMode) const override;
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bool properties_equal(CSSKeywordValue const& other) const { return m_keyword == other.m_keyword; }
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private:
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explicit CSSKeywordValue(Keyword keyword)
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: StyleValueWithDefaultOperators(Type::Keyword)
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, m_keyword(keyword)
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{
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}
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Keyword m_keyword { Keyword::Invalid };
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};
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inline Keyword CSSStyleValue::to_keyword() const
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{
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if (is_keyword())
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return static_cast<CSSKeywordValue const&>(*this).keyword();
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return Keyword::Invalid;
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}
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}
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