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      1 /*
      2  * (C) 1999-2003 Lars Knoll (knoll (at) kde.org)
      3  * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.
      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 CSSProperty_h
     22 #define CSSProperty_h
     23 
     24 #include "CSSValue.h"
     25 #include "RenderStyleConstants.h"
     26 #include "TextDirection.h"
     27 #include <wtf/PassRefPtr.h>
     28 #include <wtf/RefPtr.h>
     29 
     30 namespace WebCore {
     31 
     32 class CSSProperty {
     33     WTF_MAKE_FAST_ALLOCATED;
     34 public:
     35     CSSProperty(int propID, PassRefPtr<CSSValue> value, bool important = false, int shorthandID = 0, bool implicit = false)
     36         : m_id(propID)
     37         , m_shorthandID(shorthandID)
     38         , m_important(important)
     39         , m_implicit(implicit)
     40         , m_value(value)
     41     {
     42     }
     43 
     44     CSSProperty& operator=(const CSSProperty& other)
     45     {
     46         m_id = other.m_id;
     47         m_shorthandID = other.m_shorthandID;
     48         m_important = other.m_important;
     49         m_implicit = other.m_implicit;
     50         m_value = other.m_value;
     51         return *this;
     52     }
     53 
     54     int id() const { return m_id; }
     55     int shorthandID() const { return m_shorthandID; }
     56 
     57     bool isImportant() const { return m_important; }
     58     bool isImplicit() const { return m_implicit; }
     59 
     60     CSSValue* value() const { return m_value.get(); }
     61 
     62     String cssText() const;
     63 
     64     static int resolveDirectionAwareProperty(int propertyID, TextDirection, WritingMode);
     65 
     66     friend bool operator==(const CSSProperty&, const CSSProperty&);
     67 
     68     // Make sure the following fits in 4 bytes. Really.
     69     int m_id : 15;
     70     int m_shorthandID : 15; // If this property was set as part of a shorthand, gives the shorthand.
     71     bool m_important : 1;
     72     bool m_implicit : 1; // Whether or not the property was set implicitly as the result of a shorthand.
     73 
     74     RefPtr<CSSValue> m_value;
     75 };
     76 
     77 } // namespace WebCore
     78 
     79 namespace WTF {
     80     // Properties in Vector can be initialized with memset and moved using memcpy.
     81     template<> struct VectorTraits<WebCore::CSSProperty> : SimpleClassVectorTraits { };
     82 }
     83 
     84 #endif // CSSProperty_h
     85