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1 /*
2  * (C) 1999-2003 Lars Knoll (knoll@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 
length()45     unsigned length() const { return virtualLength(); }
46     virtual unsigned virtualLength() const = 0;
isEmpty()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