1/*
2 * Copyright (C) 2012 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef PropertySetCSSStyleDeclaration_h
27#define PropertySetCSSStyleDeclaration_h
28
29#include "core/css/CSSStyleDeclaration.h"
30#include "wtf/HashMap.h"
31#include "wtf/OwnPtr.h"
32
33namespace WebCore {
34
35class CSSProperty;
36class CSSRule;
37class CSSValue;
38class Element;
39class ExceptionState;
40class MutableStylePropertySet;
41class StyleSheetContents;
42
43class PropertySetCSSStyleDeclaration : public CSSStyleDeclaration {
44public:
45    PropertySetCSSStyleDeclaration(MutableStylePropertySet* propertySet) : m_propertySet(propertySet) { }
46
47    virtual Element* parentElement() const { return 0; }
48    virtual void clearParentElement() { ASSERT_NOT_REACHED(); }
49    StyleSheetContents* contextStyleSheet() const;
50
51    virtual void ref() OVERRIDE;
52    virtual void deref() OVERRIDE;
53
54private:
55    virtual CSSRule* parentRule() const OVERRIDE { return 0; };
56    virtual unsigned length() const OVERRIDE;
57    virtual String item(unsigned index) const OVERRIDE;
58    virtual PassRefPtr<CSSValue> getPropertyCSSValue(const String& propertyName) OVERRIDE;
59    virtual String getPropertyValue(const String& propertyName) OVERRIDE;
60    virtual String getPropertyPriority(const String& propertyName) OVERRIDE;
61    virtual String getPropertyShorthand(const String& propertyName) OVERRIDE;
62    virtual bool isPropertyImplicit(const String& propertyName) OVERRIDE;
63    virtual void setProperty(const String& propertyName, const String& value, const String& priority, ExceptionState&) OVERRIDE;
64    virtual String removeProperty(const String& propertyName, ExceptionState&) OVERRIDE;
65    virtual String cssText() const OVERRIDE;
66    virtual void setCSSText(const String&, ExceptionState&) OVERRIDE;
67    virtual PassRefPtr<CSSValue> getPropertyCSSValueInternal(CSSPropertyID) OVERRIDE;
68    virtual String getPropertyValueInternal(CSSPropertyID) OVERRIDE;
69    virtual void setPropertyInternal(CSSPropertyID, const String& value, bool important, ExceptionState&) OVERRIDE;
70
71    virtual unsigned variableCount() const OVERRIDE;
72    virtual String variableValue(const AtomicString& name) const OVERRIDE;
73    virtual bool setVariableValue(const AtomicString& name, const String& value, ExceptionState&) OVERRIDE;
74    virtual bool removeVariable(const AtomicString& name) OVERRIDE;
75    virtual bool clearVariables(ExceptionState&) OVERRIDE;
76    virtual PassRefPtr<CSSVariablesIterator> variablesIterator() const OVERRIDE;
77
78    virtual bool cssPropertyMatches(CSSPropertyID, const CSSValue*) const OVERRIDE;
79    virtual PassRefPtr<MutableStylePropertySet> copyProperties() const OVERRIDE;
80
81    CSSValue* cloneAndCacheForCSSOM(CSSValue*);
82
83protected:
84    enum MutationType { NoChanges, PropertyChanged };
85    virtual void willMutate() { }
86    virtual void didMutate(MutationType) { }
87
88    MutableStylePropertySet* m_propertySet;
89    OwnPtr<HashMap<CSSValue*, RefPtr<CSSValue> > > m_cssomCSSValueClones;
90};
91
92class StyleRuleCSSStyleDeclaration : public PropertySetCSSStyleDeclaration
93{
94public:
95    static PassRefPtr<StyleRuleCSSStyleDeclaration> create(MutableStylePropertySet* propertySet, CSSRule* parentRule)
96    {
97        return adoptRef(new StyleRuleCSSStyleDeclaration(propertySet, parentRule));
98    }
99
100    void clearParentRule() { m_parentRule = 0; }
101
102    virtual void ref() OVERRIDE;
103    virtual void deref() OVERRIDE;
104
105    void reattach(MutableStylePropertySet*);
106
107private:
108    StyleRuleCSSStyleDeclaration(MutableStylePropertySet*, CSSRule*);
109    virtual ~StyleRuleCSSStyleDeclaration();
110
111    virtual CSSStyleSheet* parentStyleSheet() const OVERRIDE;
112
113    virtual CSSRule* parentRule() const OVERRIDE { return m_parentRule;  }
114
115    virtual void willMutate() OVERRIDE;
116    virtual void didMutate(MutationType) OVERRIDE;
117
118    unsigned m_refCount;
119    CSSRule* m_parentRule;
120};
121
122class InlineCSSStyleDeclaration : public PropertySetCSSStyleDeclaration
123{
124public:
125    InlineCSSStyleDeclaration(MutableStylePropertySet* propertySet, Element* parentElement)
126        : PropertySetCSSStyleDeclaration(propertySet)
127        , m_parentElement(parentElement)
128    {
129    }
130
131private:
132    virtual CSSStyleSheet* parentStyleSheet() const OVERRIDE;
133    virtual Element* parentElement() const OVERRIDE { return m_parentElement; }
134    virtual void clearParentElement() OVERRIDE { m_parentElement = 0; }
135
136    virtual void didMutate(MutationType) OVERRIDE;
137
138    Element* m_parentElement;
139};
140
141} // namespace WebCore
142
143#endif
144