1/*
2 * Copyright (C) 2004 Zack Rusin <zack@kde.org>
3 * Copyright (C) 2004, 2005, 2006, 2008, 2012 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 "core/css/CSSStyleDeclaration.h"
25#include "core/rendering/style/RenderStyleConstants.h"
26#include "platform/fonts/FixedPitchFontType.h"
27#include "wtf/HashMap.h"
28#include "wtf/RefPtr.h"
29#include "wtf/text/AtomicString.h"
30#include "wtf/text/AtomicStringHash.h"
31#include "wtf/text/WTFString.h"
32
33namespace blink {
34
35class CSSPrimitiveValue;
36class CSSValueList;
37class ExceptionState;
38class MutableStylePropertySet;
39class Node;
40class RenderObject;
41class RenderStyle;
42class ShadowData;
43class ShadowList;
44class StyleColor;
45class StylePropertyShorthand;
46
47enum EUpdateLayout { DoNotUpdateLayout = false, UpdateLayout = true };
48
49class CSSComputedStyleDeclaration FINAL : public CSSStyleDeclaration {
50public:
51    static PassRefPtrWillBeRawPtr<CSSComputedStyleDeclaration> create(PassRefPtrWillBeRawPtr<Node> node, bool allowVisitedStyle = false, const String& pseudoElementName = String())
52    {
53        return adoptRefWillBeNoop(new CSSComputedStyleDeclaration(node, allowVisitedStyle, pseudoElementName));
54    }
55    virtual ~CSSComputedStyleDeclaration();
56
57#if !ENABLE(OILPAN)
58    virtual void ref() OVERRIDE;
59    virtual void deref() OVERRIDE;
60#endif
61
62    String getPropertyValue(CSSPropertyID) const;
63    bool getPropertyPriority(CSSPropertyID) const;
64
65    virtual PassRefPtrWillBeRawPtr<MutableStylePropertySet> copyProperties() const OVERRIDE;
66
67    PassRefPtrWillBeRawPtr<CSSValue> getPropertyCSSValue(CSSPropertyID, EUpdateLayout = UpdateLayout) const;
68    PassRefPtrWillBeRawPtr<CSSValue> getFontSizeCSSValuePreferringKeyword() const;
69    FixedPitchFontType fixedPitchFontType() const;
70    PassRefPtrWillBeRawPtr<CSSValue> getSVGPropertyCSSValue(CSSPropertyID, EUpdateLayout) const;
71
72    PassRefPtrWillBeRawPtr<MutableStylePropertySet> copyPropertiesInSet(const Vector<CSSPropertyID>&) const;
73
74    virtual void trace(Visitor*) OVERRIDE;
75
76private:
77    CSSComputedStyleDeclaration(PassRefPtrWillBeRawPtr<Node>, bool allowVisitedStyle, const String&);
78
79    // The styled node is either the node passed into getComputedStyle, or the
80    // PseudoElement for :before and :after if they exist.
81    // FIXME: This should be styledElement since in JS getComputedStyle only works
82    // on Elements, but right now editing creates these for text nodes. We should fix
83    // that.
84    Node* styledNode() const;
85
86    // CSSOM functions. Don't make these public.
87    virtual CSSRule* parentRule() const OVERRIDE;
88    virtual unsigned length() const OVERRIDE;
89    virtual String item(unsigned index) const OVERRIDE;
90    PassRefPtr<RenderStyle> computeRenderStyle() const;
91    virtual PassRefPtrWillBeRawPtr<CSSValue> getPropertyCSSValue(const String& propertyName) OVERRIDE;
92    virtual String getPropertyValue(const String& propertyName) OVERRIDE;
93    virtual String getPropertyPriority(const String& propertyName) OVERRIDE;
94    virtual String getPropertyShorthand(const String& propertyName) OVERRIDE;
95    virtual bool isPropertyImplicit(const String& propertyName) OVERRIDE;
96    virtual void setProperty(const String& propertyName, const String& value, const String& priority, ExceptionState&) OVERRIDE;
97    virtual String removeProperty(const String& propertyName, ExceptionState&) OVERRIDE;
98    virtual String cssText() const OVERRIDE;
99    virtual void setCSSText(const String&, ExceptionState&) OVERRIDE;
100    virtual PassRefPtrWillBeRawPtr<CSSValue> getPropertyCSSValueInternal(CSSPropertyID) OVERRIDE;
101    virtual String getPropertyValueInternal(CSSPropertyID) OVERRIDE;
102    virtual void setPropertyInternal(CSSPropertyID, const String& value, bool important, ExceptionState&) OVERRIDE;
103
104    virtual bool cssPropertyMatches(CSSPropertyID, const CSSValue*) const OVERRIDE;
105
106    PassRefPtrWillBeRawPtr<CSSValue> valueForShadowData(const ShadowData&, const RenderStyle&, bool useSpread) const;
107    PassRefPtrWillBeRawPtr<CSSValue> valueForShadowList(const ShadowList*, const RenderStyle&, bool useSpread) const;
108    PassRefPtrWillBeRawPtr<CSSPrimitiveValue> currentColorOrValidColor(const RenderStyle&, const StyleColor&) const;
109
110    PassRefPtrWillBeRawPtr<CSSValue> valueForFilter(const RenderObject*, const RenderStyle&) const;
111
112    PassRefPtrWillBeRawPtr<CSSValueList> valuesForShorthandProperty(const StylePropertyShorthand&) const;
113    PassRefPtrWillBeRawPtr<CSSValueList> valuesForSidesShorthand(const StylePropertyShorthand&) const;
114    PassRefPtrWillBeRawPtr<CSSValueList> valuesForBackgroundShorthand() const;
115    PassRefPtrWillBeRawPtr<CSSValueList> valuesForGridShorthand(const StylePropertyShorthand&) const;
116
117    RefPtrWillBeMember<Node> m_node;
118    PseudoId m_pseudoElementSpecifier;
119    bool m_allowVisitedStyle;
120#if !ENABLE(OILPAN)
121    unsigned m_refCount;
122#endif
123};
124
125} // namespace blink
126
127#endif // CSSComputedStyleDeclaration_h
128