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      1 /*
      2  * (C) 1999-2003 Lars Knoll (knoll (at) kde.org)
      3  * (C) 2002-2003 Dirk Mueller (mueller (at) kde.org)
      4  * Copyright (C) 2002, 2006, 2008, 2012 Apple Inc. All rights reserved.
      5  * Copyright (C) 2006 Samuel Weinig (sam (at) webkit.org)
      6  *
      7  * This library is free software; you can redistribute it and/or
      8  * modify it under the terms of the GNU Library General Public
      9  * License as published by the Free Software Foundation; either
     10  * version 2 of the License, or (at your option) any later version.
     11  *
     12  * This library is distributed in the hope that it will be useful,
     13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     15  * Library General Public License for more details.
     16  *
     17  * You should have received a copy of the GNU Library General Public License
     18  * along with this library; see the file COPYING.LIB.  If not, write to
     19  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     20  * Boston, MA 02110-1301, USA.
     21  */
     22 
     23 #ifndef CSSGroupingRule_h
     24 #define CSSGroupingRule_h
     25 
     26 #include "core/css/CSSRule.h"
     27 #include "core/css/StyleRule.h"
     28 #include "wtf/Vector.h"
     29 
     30 namespace blink {
     31 
     32 class ExceptionState;
     33 class CSSRuleList;
     34 
     35 class CSSGroupingRule : public CSSRule {
     36 public:
     37     virtual ~CSSGroupingRule();
     38 
     39     virtual void reattach(StyleRuleBase*) OVERRIDE;
     40 
     41     CSSRuleList* cssRules() const;
     42 
     43     unsigned insertRule(const String& rule, unsigned index, ExceptionState&);
     44     void deleteRule(unsigned index, ExceptionState&);
     45 
     46     // For CSSRuleList
     47     unsigned length() const;
     48     CSSRule* item(unsigned index) const;
     49 
     50     virtual void trace(Visitor*) OVERRIDE;
     51 
     52 protected:
     53     CSSGroupingRule(StyleRuleGroup* groupRule, CSSStyleSheet* parent);
     54 
     55     void appendCSSTextForItems(StringBuilder&) const;
     56 
     57     RefPtrWillBeMember<StyleRuleGroup> m_groupRule;
     58     mutable WillBeHeapVector<RefPtrWillBeMember<CSSRule> > m_childRuleCSSOMWrappers;
     59     mutable OwnPtrWillBeMember<CSSRuleList> m_ruleListCSSOMWrapper;
     60 };
     61 
     62 } // namespace blink
     63 
     64 #endif // CSSGroupingRule_h
     65