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5aba457009
A couple of arbitrary substitution functions require us to get or produce some style value, and then substitute its ComponentValues into the original ComponentValue list. So this commit gives CSSStyleValue a tokenize() method that does so. Apart from a couple of unusual cases like the guaranteed-invalid value, style values can all be converted into ComponentValues by serializing them as a string, and then parsing that as a list of component values. That feels unnecessarily inefficient in most cases though, so I've implemented faster overrides for a lot of the basic style value classes, but left that serialize-and-reparse method as the fallback.
35 lines
851 B
C++
35 lines
851 B
C++
/*
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* Copyright (c) 2024-2025, Sam Atkins <sam@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/FlyString.h>
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#include <LibWeb/CSS/Parser/ComponentValue.h>
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#include <LibWeb/CSS/Parser/Token.h>
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#include <LibWeb/CSS/StyleValues/CSSNumericValue.h>
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namespace Web::CSS {
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// https://drafts.css-houdini.org/css-typed-om-1/#cssunitvalue
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class CSSUnitValue : public CSSNumericValue {
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public:
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virtual ~CSSUnitValue() override = default;
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virtual double value() const = 0;
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virtual StringView unit() const = 0;
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virtual Vector<Parser::ComponentValue> tokenize() const override
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{
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return { Parser::Token::create_dimension(value(), FlyString::from_utf8_without_validation(unit().bytes())) };
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}
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protected:
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explicit CSSUnitValue(Type type)
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: CSSNumericValue(type)
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{
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}
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};
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}
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