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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 CSSQuirkPrimitiveValue_h
     22 #define CSSQuirkPrimitiveValue_h
     23 
     24 #include "CSSPrimitiveValue.h"
     25 
     26 namespace WebCore {
     27 
     28 // This value is used to handle quirky margins in reflow roots (body, td, and th) like WinIE.
     29 // The basic idea is that a stylesheet can use the value __qem (for quirky em) instead of em.
     30 // When the quirky value is used, if you're in quirks mode, the margin will collapse away
     31 // inside a table cell.
     32 class CSSQuirkPrimitiveValue : public CSSPrimitiveValue {
     33 public:
     34     static PassRefPtr<CSSQuirkPrimitiveValue> create(double value, UnitTypes type)
     35     {
     36         return adoptRef(new CSSQuirkPrimitiveValue(value, type));
     37     }
     38 
     39 private:
     40     CSSQuirkPrimitiveValue(double num, UnitTypes type)
     41         : CSSPrimitiveValue(num, type)
     42     {
     43     }
     44 
     45     virtual bool isQuirkValue() { return true; }
     46 };
     47 
     48 } // namespace WebCore
     49 
     50 #endif // CSSQuirkPrimitiveValue_h
     51