ladybird/Userland/Libraries/LibWeb/CSS/CSSGroupingRule.cpp
Jonne Ransijn 5c1bbd3eff LibWeb: Make CSSRule::type() non-virtual
All its overrides return constants, and without virtual dispatch the
`qualified_layer_name` and `absolutized_selectors` functions can benefit
from slightly better optimizations.

`CSSRule`s aren't allocated that often, so the memory impact is minimal.
2024-10-28 22:53:57 +01:00

62 lines
1.7 KiB
C++

/*
* Copyright (c) 2021-2024, Sam Atkins <sam@ladybird.org>
* Copyright (c) 2022, Andreas Kling <andreas@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/Bindings/CSSGroupingRulePrototype.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/Bindings/MainThreadVM.h>
#include <LibWeb/CSS/CSSGroupingRule.h>
#include <LibWeb/CSS/CSSRuleList.h>
#include <LibWeb/HTML/Window.h>
namespace Web::CSS {
CSSGroupingRule::CSSGroupingRule(JS::Realm& realm, CSSRuleList& rules, Type type)
: CSSRule(realm, type)
, m_rules(rules)
{
for (auto& rule : *m_rules)
rule->set_parent_rule(this);
}
void CSSGroupingRule::initialize(JS::Realm& realm)
{
Base::initialize(realm);
WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSGroupingRule);
}
void CSSGroupingRule::visit_edges(Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_rules);
}
WebIDL::ExceptionOr<u32> CSSGroupingRule::insert_rule(StringView rule, u32 index)
{
TRY(m_rules->insert_a_css_rule(rule, index));
// NOTE: The spec doesn't say where to set the parent rule, so we'll do it here.
m_rules->item(index)->set_parent_rule(this);
return index;
}
WebIDL::ExceptionOr<void> CSSGroupingRule::delete_rule(u32 index)
{
return m_rules->remove_a_css_rule(index);
}
void CSSGroupingRule::for_each_effective_rule(TraversalOrder order, Function<void(Web::CSS::CSSRule const&)> const& callback) const
{
m_rules->for_each_effective_rule(order, callback);
}
void CSSGroupingRule::set_parent_style_sheet(CSSStyleSheet* parent_style_sheet)
{
CSSRule::set_parent_style_sheet(parent_style_sheet);
for (auto& rule : *m_rules)
rule->set_parent_style_sheet(parent_style_sheet);
}
}