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https://github.com/zebrajr/ladybird.git
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0f5e054f97
CSS Values 5 now defines a `<boolean-expr[]>` type that is used in place of the bespoke grammar that previously existed for `@media` and `@supports` queries. This commit implements some BooleanExpression types to represent the nodes in a `<boolean-expr[]>`, and reimplements `@media` and `@supports` queries using this. The one part of this implementation I'm not convinced on is that the `evaluate()` methods take a `HTML::Window*`. This is a compromise because `@media` requires a Window, and `@supports` does not require anything at all. As more users of `<boolean-expr[]>` get implemented in the future, it will become clear if this is sufficient, or if we need to do something smarter. As a bonus, this actually improves our serialization of media queries!
61 lines
1.4 KiB
C++
61 lines
1.4 KiB
C++
/*
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* Copyright (c) 2021-2025, 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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#include <LibJS/Runtime/Realm.h>
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#include <LibWeb/CSS/Supports.h>
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namespace Web::CSS {
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Supports::Supports(NonnullOwnPtr<BooleanExpression>&& condition)
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: m_condition(move(condition))
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{
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m_matches = m_condition->evaluate_to_boolean(nullptr);
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}
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MatchResult Supports::Declaration::evaluate(HTML::Window const*) const
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{
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return as_match_result(m_matches);
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}
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String Supports::Declaration::to_string() const
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{
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return MUST(String::formatted("({})", m_declaration));
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}
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void Supports::Declaration::dump(StringBuilder& builder, int indent_levels) const
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{
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indent(builder, indent_levels);
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builder.appendff("Declaration: `{}`, matches={}\n", m_declaration, m_matches);
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}
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MatchResult Supports::Selector::evaluate(HTML::Window const*) const
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{
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return as_match_result(m_matches);
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}
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String Supports::Selector::to_string() const
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{
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return MUST(String::formatted("selector({})", m_selector));
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}
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void Supports::Selector::dump(StringBuilder& builder, int indent_levels) const
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{
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indent(builder, indent_levels);
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builder.appendff("Selector: `{}` matches={}\n", m_selector, m_matches);
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}
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String Supports::to_string() const
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{
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return m_condition->to_string();
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}
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void Supports::dump(StringBuilder& builder, int indent_levels) const
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{
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m_condition->dump(builder, indent_levels);
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}
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}
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