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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 CSSStyleDeclaration_h
     22 #define CSSStyleDeclaration_h
     23 
     24 #include "StyleBase.h"
     25 #include <wtf/Forward.h>
     26 
     27 namespace WebCore {
     28 
     29 class CSSMutableStyleDeclaration;
     30 class CSSProperty;
     31 class CSSRule;
     32 class CSSValue;
     33 
     34 typedef int ExceptionCode;
     35 
     36 class CSSStyleDeclaration : public StyleBase {
     37 public:
     38     static bool isPropertyName(const String&);
     39 
     40     CSSRule* parentRule() const;
     41 
     42     virtual String cssText() const = 0;
     43     virtual void setCssText(const String&, ExceptionCode&) = 0;
     44 
     45     unsigned length() const { return virtualLength(); }
     46     virtual unsigned virtualLength() const = 0;
     47     bool isEmpty() const { return !length(); }
     48     virtual String item(unsigned index) const = 0;
     49 
     50     PassRefPtr<CSSValue> getPropertyCSSValue(const String& propertyName);
     51     String getPropertyValue(const String& propertyName);
     52     String getPropertyPriority(const String& propertyName);
     53     String getPropertyShorthand(const String& propertyName);
     54     bool isPropertyImplicit(const String& propertyName);
     55 
     56     virtual PassRefPtr<CSSValue> getPropertyCSSValue(int propertyID) const = 0;
     57     virtual String getPropertyValue(int propertyID) const = 0;
     58     virtual bool getPropertyPriority(int propertyID) const = 0;
     59     virtual int getPropertyShorthand(int propertyID) const = 0;
     60     virtual bool isPropertyImplicit(int propertyID) const = 0;
     61 
     62     void setProperty(const String& propertyName, const String& value, ExceptionCode&);
     63     void setProperty(const String& propertyName, const String& value, const String& priority, ExceptionCode&);
     64     String removeProperty(const String& propertyName, ExceptionCode&);
     65     virtual void setProperty(int propertyId, const String& value, bool important, ExceptionCode&) = 0;
     66     virtual String removeProperty(int propertyID, ExceptionCode&) = 0;
     67 
     68     virtual PassRefPtr<CSSMutableStyleDeclaration> copy() const = 0;
     69     virtual PassRefPtr<CSSMutableStyleDeclaration> makeMutable() = 0;
     70 
     71     void diff(CSSMutableStyleDeclaration*) const;
     72 
     73     PassRefPtr<CSSMutableStyleDeclaration> copyPropertiesInSet(const int* set, unsigned length) const;
     74 
     75 protected:
     76     CSSStyleDeclaration(CSSRule* parentRule = 0);
     77 
     78     virtual bool cssPropertyMatches(const CSSProperty*) const;
     79 
     80 };
     81 
     82 } // namespace WebCore
     83 
     84 #endif // CSSStyleDeclaration_h
     85