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      1 /*
      2  * (C) 1999-2003 Lars Knoll (knoll (at) kde.org)
      3  * Copyright (C) 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
      4  *
      5  * This library is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Library General Public
      7  * License as published by the Free Software Foundation; either
      8  * version 2 of the License, or (at your option) any later version.
      9  *
     10  * This library is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Library General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Library General Public License
     16  * along with this library; see the file COPYING.LIB.  If not, write to
     17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18  * Boston, MA 02110-1301, USA.
     19  */
     20 
     21 #ifndef CSSInitialValue_h
     22 #define CSSInitialValue_h
     23 
     24 #include "CSSValue.h"
     25 #include <wtf/PassRefPtr.h>
     26 
     27 namespace WebCore {
     28 
     29 class CSSInitialValue : public CSSValue {
     30 public:
     31     static PassRefPtr<CSSInitialValue> createExplicit()
     32     {
     33         static CSSInitialValue* explicitValue = create(false).releaseRef();
     34         return explicitValue;
     35     }
     36     static PassRefPtr<CSSInitialValue> createImplicit()
     37     {
     38         static CSSInitialValue* explicitValue = create(true).releaseRef();
     39         return explicitValue;
     40     }
     41 
     42     virtual String cssText() const;
     43 
     44 private:
     45     CSSInitialValue(bool implicit)
     46         : m_implicit(implicit)
     47     {
     48     }
     49 
     50     static PassRefPtr<CSSInitialValue> create(bool implicit)
     51     {
     52         return adoptRef(new CSSInitialValue(implicit));
     53     }
     54 
     55     virtual unsigned short cssValueType() const;
     56     virtual bool isImplicitInitialValue() const { return m_implicit; }
     57 
     58     bool m_implicit;
     59 };
     60 
     61 } // namespace WebCore
     62 
     63 #endif // CSSInitialValue_h
     64