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/*
* (C) 1999-2003 Lars Knoll (knoll@kde.org)
* (C) 2002-2003 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2002-2024 Apple Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#pragma once
#include <wtf/AbstractRefCounted.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
#include <wtf/TZoneMallocInlines.h>
#include <wtf/Vector.h>
namespace WebCore {
class CSSRule;
class CSSStyleSheet;
class CSSRuleList : public AbstractRefCounted {
WTF_MAKE_NONCOPYABLE(CSSRuleList);
public:
virtual ~CSSRuleList();
virtual unsigned length() const = 0;
virtual CSSRule* item(unsigned index) const = 0;
bool isSupportedPropertyIndex(unsigned index) const { return item(index); }
virtual CSSStyleSheet* styleSheet() const = 0;
protected:
CSSRuleList();
};
class StaticCSSRuleList final : public CSSRuleList, public RefCounted<StaticCSSRuleList> {
public:
void ref() const final { RefCounted::ref(); }
void deref() const final { RefCounted::deref(); }
static Ref<StaticCSSRuleList> create() { return adoptRef(*new StaticCSSRuleList); }
Vector<RefPtr<CSSRule>>& rules() { return m_rules; }
CSSStyleSheet* styleSheet() const final { return nullptr; }
~StaticCSSRuleList();
private:
StaticCSSRuleList();
unsigned length() const final { return m_rules.size(); }
CSSRule* item(unsigned index) const final { return index < m_rules.size() ? m_rules[index].get() : nullptr; }
Vector<RefPtr<CSSRule>> m_rules;
};
// The rule owns the live list.
template <class Rule>
class LiveCSSRuleList final : public CSSRuleList {
WTF_MAKE_TZONE_ALLOCATED_TEMPLATE(LiveCSSRuleList);
public:
LiveCSSRuleList(Rule& rule)
: m_rule(rule)
{
}
void ref() const final { m_rule.ref(); }
void deref() const final { m_rule.deref(); }
private:
unsigned length() const final { return m_rule.length(); }
CSSRule* item(unsigned index) const final { return m_rule.item(index); }
CSSStyleSheet* styleSheet() const final { return m_rule.parentStyleSheet(); }
Rule& m_rule;
};
WTF_MAKE_TZONE_ALLOCATED_TEMPLATE_IMPL(template<class Rule>, LiveCSSRuleList<Rule>);
} // namespace WebCore
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