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serenity/Userland/Libraries/LibWeb/CSS/CSSRuleList.h

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C++

/*
* Copyright (c) 2021-2022, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Function.h>
#include <AK/Iterator.h>
#include <AK/NonnullRefPtrVector.h>
#include <AK/RefPtr.h>
#include <LibWeb/Bindings/LegacyPlatformObject.h>
#include <LibWeb/CSS/CSSRule.h>
#include <LibWeb/DOM/ExceptionOr.h>
#include <LibWeb/Forward.h>
namespace Web::CSS {
// https://www.w3.org/TR/cssom/#the-cssrulelist-interface
class CSSRuleList : public Bindings::LegacyPlatformObject {
JS_OBJECT(CSSRuleList, Bindings::LegacyPlatformObject);
public:
CSSRuleList& impl() { return *this; }
static CSSRuleList* create(Bindings::WindowObject&, JS::MarkedVector<CSSRule*> const&);
static CSSRuleList* create_empty(Bindings::WindowObject&);
explicit CSSRuleList(Bindings::WindowObject&);
~CSSRuleList() = default;
CSSRule const* item(size_t index) const
{
if (index >= length())
return nullptr;
return &m_rules[index];
}
CSSRule* item(size_t index)
{
if (index >= length())
return nullptr;
return &m_rules[index];
}
size_t length() const { return m_rules.size(); }
using ConstIterator = AK::SimpleIterator<Vector<CSSRule&> const, CSSRule const>;
using Iterator = AK::SimpleIterator<Vector<CSSRule&>, CSSRule>;
ConstIterator const begin() const { return m_rules.begin(); }
Iterator begin() { return m_rules.begin(); }
ConstIterator const end() const { return m_rules.end(); }
Iterator end() { return m_rules.end(); }
virtual bool is_supported_property_index(u32 index) const override;
virtual JS::Value item_value(size_t index) const override;
DOM::ExceptionOr<void> remove_a_css_rule(u32 index);
DOM::ExceptionOr<unsigned> insert_a_css_rule(Variant<StringView, CSSRule*>, u32 index);
void for_each_effective_style_rule(Function<void(CSSStyleRule const&)> const& callback) const;
// Returns whether the match state of any media queries changed after evaluation.
bool evaluate_media_queries(HTML::Window const&);
private:
virtual void visit_edges(Cell::Visitor&) override;
Vector<CSSRule&> m_rules;
};
}
namespace Web::Bindings {
inline JS::Object* wrap(JS::Realm&, Web::CSS::CSSRuleList& object) { return &object; }
using CSSRuleListWrapper = Web::CSS::CSSRuleList;
}