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 blink {
34
35class CSSRule;
36class CSSValue;
37class Element;
38class ExceptionState;
39class MutableStylePropertySet;
40class StyleSheetContents;
41
42class AbstractPropertySetCSSStyleDeclaration : public CSSStyleDeclaration {
43public:
44    virtual Element* parentElement() const { return 0; }
45    StyleSheetContents* contextStyleSheet() const;
46
47    virtual void trace(Visitor*) OVERRIDE;
48
49private:
50    virtual CSSRule* parentRule() const OVERRIDE { return 0; }
51    virtual unsigned length() const OVERRIDE FINAL;
52    virtual String item(unsigned index) const OVERRIDE FINAL;
53    virtual PassRefPtrWillBeRawPtr<CSSValue> getPropertyCSSValue(const String& propertyName) OVERRIDE FINAL;
54    virtual String getPropertyValue(const String& propertyName) OVERRIDE FINAL;
55    virtual String getPropertyPriority(const String& propertyName) OVERRIDE FINAL;
56    virtual String getPropertyShorthand(const String& propertyName) OVERRIDE FINAL;
57    virtual bool isPropertyImplicit(const String& propertyName) OVERRIDE FINAL;
58    virtual void setProperty(const String& propertyName, const String& value, const String& priority, ExceptionState&) OVERRIDE FINAL;
59    virtual String removeProperty(const String& propertyName, ExceptionState&) OVERRIDE FINAL;
60    virtual String cssText() const OVERRIDE FINAL;
61    virtual void setCSSText(const String&, ExceptionState&) OVERRIDE FINAL;
62    virtual PassRefPtrWillBeRawPtr<CSSValue> getPropertyCSSValueInternal(CSSPropertyID) OVERRIDE FINAL;
63    virtual String getPropertyValueInternal(CSSPropertyID) OVERRIDE FINAL;
64    virtual void setPropertyInternal(CSSPropertyID, const String& value, bool important, ExceptionState&) OVERRIDE FINAL;
65
66    virtual bool cssPropertyMatches(CSSPropertyID, const CSSValue*) const OVERRIDE FINAL;
67    virtual PassRefPtrWillBeRawPtr<MutableStylePropertySet> copyProperties() const OVERRIDE FINAL;
68
69    CSSValue* cloneAndCacheForCSSOM(CSSValue*);
70
71protected:
72    enum MutationType { NoChanges, PropertyChanged };
73    virtual void willMutate() { }
74    virtual void didMutate(MutationType) { }
75    virtual MutableStylePropertySet& propertySet() const = 0;
76
77    OwnPtrWillBeMember<WillBeHeapHashMap<RawPtrWillBeMember<CSSValue>, RefPtrWillBeMember<CSSValue> > > m_cssomCSSValueClones;
78};
79
80class PropertySetCSSStyleDeclaration : public AbstractPropertySetCSSStyleDeclaration {
81public:
82    PropertySetCSSStyleDeclaration(MutableStylePropertySet& propertySet) : m_propertySet(&propertySet) { }
83
84#if !ENABLE(OILPAN)
85    virtual void ref() OVERRIDE;
86    virtual void deref() OVERRIDE;
87#endif
88
89    virtual void trace(Visitor*) OVERRIDE;
90
91protected:
92    virtual MutableStylePropertySet& propertySet() const OVERRIDE FINAL { ASSERT(m_propertySet); return *m_propertySet; }
93
94    RawPtrWillBeMember<MutableStylePropertySet> m_propertySet; // Cannot be null
95};
96
97class StyleRuleCSSStyleDeclaration FINAL : public PropertySetCSSStyleDeclaration
98{
99public:
100    static PassRefPtrWillBeRawPtr<StyleRuleCSSStyleDeclaration> create(MutableStylePropertySet& propertySet, CSSRule* parentRule)
101    {
102        return adoptRefWillBeNoop(new StyleRuleCSSStyleDeclaration(propertySet, parentRule));
103    }
104
105#if !ENABLE(OILPAN)
106    void clearParentRule() { m_parentRule = nullptr; }
107
108    virtual void ref() OVERRIDE;
109    virtual void deref() OVERRIDE;
110#endif
111
112    void reattach(MutableStylePropertySet&);
113
114    virtual void trace(Visitor*) OVERRIDE;
115
116private:
117    StyleRuleCSSStyleDeclaration(MutableStylePropertySet&, CSSRule*);
118    virtual ~StyleRuleCSSStyleDeclaration();
119
120    virtual CSSStyleSheet* parentStyleSheet() const OVERRIDE;
121
122    virtual CSSRule* parentRule() const OVERRIDE { return m_parentRule;  }
123
124    virtual void willMutate() OVERRIDE;
125    virtual void didMutate(MutationType) OVERRIDE;
126
127#if !ENABLE(OILPAN)
128    unsigned m_refCount;
129#endif
130    RawPtrWillBeMember<CSSRule> m_parentRule;
131};
132
133class InlineCSSStyleDeclaration FINAL : public AbstractPropertySetCSSStyleDeclaration
134{
135public:
136    explicit InlineCSSStyleDeclaration(Element* parentElement)
137        : m_parentElement(parentElement)
138    {
139    }
140
141    virtual void trace(Visitor*) OVERRIDE;
142
143private:
144    virtual MutableStylePropertySet& propertySet() const OVERRIDE;
145#if !ENABLE(OILPAN)
146    virtual void ref() OVERRIDE;
147    virtual void deref() OVERRIDE;
148#endif
149    virtual CSSStyleSheet* parentStyleSheet() const OVERRIDE;
150    virtual Element* parentElement() const OVERRIDE { return m_parentElement; }
151
152    virtual void didMutate(MutationType) OVERRIDE;
153
154    RawPtrWillBeMember<Element> m_parentElement;
155};
156
157} // namespace blink
158
159#endif
160