/platform/external/webkit/WebCore/css/CSSComputedStyleDeclaration.h

 1/*
 2 * Copyright (C) 2004 Zack Rusin <zack@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 Lesser 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 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
18 * 02110-1301  USA
19 */
20
21#ifndef CSSComputedStyleDeclaration_h
22#define CSSComputedStyleDeclaration_h
23
24#include "CSSStyleDeclaration.h"
25#include "Node.h"
26
27namespace WebCore {
28
29class CSSMutableStyleDeclaration;
30class ShadowData;
31
32enum EUpdateLayout { DoNotUpdateLayout = false, UpdateLayout = true };
33
34class CSSComputedStyleDeclaration : public CSSStyleDeclaration {
35public:
36    friend PassRefPtr<CSSComputedStyleDeclaration> computedStyle(PassRefPtr<Node>);
37    virtual ~CSSComputedStyleDeclaration();
38
39    virtual String cssText() const;
40
41    virtual unsigned length() const;
42    virtual String item(unsigned index) const;
43
44    virtual PassRefPtr<CSSValue> getPropertyCSSValue(int propertyID) const;
45    virtual String getPropertyValue(int propertyID) const;
46    virtual bool getPropertyPriority(int propertyID) const;
47    virtual int getPropertyShorthand(int /*propertyID*/) const { return -1; }
48    virtual bool isPropertyImplicit(int /*propertyID*/) const { return false; }
49
50    virtual PassRefPtr<CSSMutableStyleDeclaration> copy() const;
51    virtual PassRefPtr<CSSMutableStyleDeclaration> makeMutable();
52
53    PassRefPtr<CSSValue> getPropertyCSSValue(int propertyID, EUpdateLayout) const;
54    PassRefPtr<CSSValue> getFontSizeCSSValuePreferringKeyword() const;
55#if ENABLE(SVG)
56    PassRefPtr<CSSValue> getSVGPropertyCSSValue(int propertyID, EUpdateLayout) const;
57#endif
58
59protected:
60    virtual bool cssPropertyMatches(const CSSProperty*) const;
61
62private:
63    CSSComputedStyleDeclaration(PassRefPtr<Node>);
64
65    virtual void setCssText(const String&, ExceptionCode&);
66
67    virtual String removeProperty(int propertyID, ExceptionCode&);
68    virtual void setProperty(int propertyId, const String& value, bool important, ExceptionCode&);
69
70    PassRefPtr<CSSValue> valueForShadow(const ShadowData*, int) const;
71
72    RefPtr<Node> m_node;
73};
74
75inline PassRefPtr<CSSComputedStyleDeclaration> computedStyle(PassRefPtr<Node> node)
76{
77    return adoptRef(new CSSComputedStyleDeclaration(node));
78}
79
80} // namespace WebCore
81
82#endif // CSSComputedStyleDeclaration_h