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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.
68 lines
2 KiB
C++
68 lines
2 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) 2021-2025, 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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#include "StyleValueList.h"
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#include <LibWeb/CSS/Parser/ComponentValue.h>
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namespace Web::CSS {
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bool StyleValueList::Properties::operator==(Properties const& other) const
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{
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return separator == other.separator && values.span() == other.values.span();
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}
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String StyleValueList::to_string(SerializationMode mode) const
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{
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auto separator = ""sv;
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switch (m_properties.separator) {
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case Separator::Space:
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separator = " "sv;
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break;
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case Separator::Comma:
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separator = ", "sv;
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break;
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default:
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VERIFY_NOT_REACHED();
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}
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StringBuilder builder;
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for (size_t i = 0; i < m_properties.values.size(); ++i) {
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builder.append(m_properties.values[i]->to_string(mode));
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if (i != m_properties.values.size() - 1)
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builder.append(separator);
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}
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return MUST(builder.to_string());
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}
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void StyleValueList::set_style_sheet(GC::Ptr<CSSStyleSheet> style_sheet)
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{
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Base::set_style_sheet(style_sheet);
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for (auto& value : m_properties.values)
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const_cast<CSSStyleValue&>(*value).set_style_sheet(style_sheet);
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}
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Vector<Parser::ComponentValue> StyleValueList::tokenize() const
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{
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Vector<Parser::ComponentValue> component_values;
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bool first = true;
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for (auto const& value : m_properties.values) {
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if (first) {
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first = false;
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} else {
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if (m_properties.separator == Separator::Comma)
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component_values.empend(Parser::Token::create(Parser::Token::Type::Comma));
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component_values.empend(Parser::Token::create_whitespace(" "_string));
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}
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component_values.extend(value->tokenize());
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}
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return component_values;
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}
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}
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