text: /*
   * (C) 1999-2003 Lars Knoll (knoll@kde.org)
   * (C) 2002-2003 Dirk Mueller (mueller@kde.org)
   * Copyright (C) 2002, 2006, 2008, 2012 Apple Inc. All rights reserved.
   * Copyright (C) 2006 Samuel Weinig (sam@webkit.org)
   *
   * 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 "CSSRule.h"
  #include <memory>
  #include <vector>namespace WebCore {
  
  class CSSRuleList;
  class StyleRuleGroup;
  
  class CSSGroupingRule : public CSSRule {
  public:
      virtual ~CSSGroupingRule();
  
      CSSRuleList& cssRules() const;
  
      ExceptionOr<unsigned> insertRule(const std::string& rule, unsigned index);
      ExceptionOr<void> deleteRule(unsigned index);
          
      // For CSSRuleList
      unsigned length() const;
      CSSRule* item(unsigned index) const;
  
  protected:
      CSSGroupingRule(StyleRuleGroup& groupRule, CSSStyleSheet* parent);
      
      void reattach(StyleRuleBase&) override;
  
      void appendCssTextForItems(StringBuilder&) const;
  
      ref_ptr<StyleRuleGroup> m_groupRule;
  
  private:
      mutable std::vector<std::shared_ptr<CSSRule>> m_childRuleCSSOMWrappers;
      mutable std::unique_ptr<CSSRuleList> m_ruleListCSSOMWrapper;
  };
  
  } // namespace WebCore
  