d935a00413
Through the CSSOM, rules can be moved around, and so anything cached (for now just the qualified layer name) needs to be recalculated when that happens. This method is virtual so that other rules will be able to clear their cached data too.
92 lines
2.4 KiB
C++
92 lines
2.4 KiB
C++
/*
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* Copyright (c) 2021, the SerenityOS developers.
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* Copyright (c) 2022-2024, Sam Atkins <sam@ladybird.org>
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* Copyright (c) 2022, Andreas Kling <andreas@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 <LibWeb/Bindings/CSSRulePrototype.h>
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#include <LibWeb/CSS/CSSLayerBlockRule.h>
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#include <LibWeb/CSS/CSSRule.h>
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#include <LibWeb/CSS/CSSStyleSheet.h>
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namespace Web::CSS {
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CSSRule::CSSRule(JS::Realm& realm)
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: PlatformObject(realm)
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{
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}
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void CSSRule::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_parent_style_sheet);
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visitor.visit(m_parent_rule);
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}
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// https://www.w3.org/TR/cssom/#dom-cssrule-csstext
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String CSSRule::css_text() const
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{
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// The cssText attribute must return a serialization of the CSS rule.
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return serialized();
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}
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// https://www.w3.org/TR/cssom/#dom-cssrule-csstext
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void CSSRule::set_css_text(StringView)
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{
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// On setting the cssText attribute must do nothing.
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}
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void CSSRule::set_parent_rule(CSSRule* parent_rule)
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{
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m_parent_rule = parent_rule;
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clear_caches();
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}
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void CSSRule::set_parent_style_sheet(CSSStyleSheet* parent_style_sheet)
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{
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m_parent_style_sheet = parent_style_sheet;
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clear_caches();
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}
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void CSSRule::clear_caches()
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{
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m_cached_layer_name.clear();
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}
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FlyString const& CSSRule::parent_layer_internal_qualified_name_slow_case() const
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{
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Vector<FlyString> layer_names;
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for (auto* rule = parent_rule(); rule; rule = rule->parent_rule()) {
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switch (rule->type()) {
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case Type::Import:
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// TODO: Handle `layer(foo)` in import rules once we implement that.
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break;
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case Type::LayerBlock: {
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auto& layer_block = static_cast<CSSLayerBlockRule const&>(*rule);
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layer_names.append(layer_block.internal_name());
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break;
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}
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// Ignore everything else
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// Note that LayerStatement cannot have child rules so we still ignore it here.
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case Type::LayerStatement:
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case Type::Style:
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case Type::Media:
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case Type::FontFace:
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case Type::Keyframes:
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case Type::Keyframe:
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case Type::Namespace:
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case Type::Supports:
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case Type::NestedDeclarations:
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break;
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}
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}
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m_cached_layer_name = MUST(String::join("."sv, layer_names.in_reverse()));
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return m_cached_layer_name.value();
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}
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}
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