1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
/*
* (C) 1999-2003 Lars Knoll (knoll@kde.org)
* Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef CSSValue_h
#define CSSValue_h
#include "KURLHash.h"
#include <wtf/ListHashSet.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class CSSStyleSheet;
typedef int ExceptionCode;
class CSSValue : public RefCounted<CSSValue> {
public:
enum Type {
CSS_INHERIT = 0,
CSS_PRIMITIVE_VALUE = 1,
CSS_VALUE_LIST = 2,
CSS_CUSTOM = 3,
CSS_INITIAL = 4
};
// Override RefCounted's deref() to ensure operator delete is called on
// the appropriate subclass type.
void deref()
{
if (derefBase())
destroy();
}
Type cssValueType() const;
String cssText() const;
void setCssText(const String&, ExceptionCode&) { } // FIXME: Not implemented.
bool isPrimitiveValue() const { return m_classType <= PrimitiveClass; }
bool isValueList() const { return m_classType >= ValueListClass; }
bool isAspectRatioValue() const { return m_classType == AspectRatioClass; }
bool isBorderImageValue() const { return m_classType == BorderImageClass; }
bool isBorderImageSliceValue() const { return m_classType == BorderImageSliceClass; }
bool isCursorImageValue() const { return m_classType == CursorImageClass; }
bool isFontFamilyValue() const { return m_classType == FontFamilyClass; }
bool isFontFeatureValue() const { return m_classType == FontFeatureClass; }
bool isFontValue() const { return m_classType == FontClass; }
bool isImageGeneratorValue() const { return m_classType >= CanvasClass && m_classType <= RadialGradientClass; }
bool isImageValue() const { return m_classType == ImageClass || m_classType == CursorImageClass; }
bool isImplicitInitialValue() const { return m_classType == InitialClass && m_isImplicitInitialValue; }
bool isInheritedValue() const { return m_classType == InheritedClass; }
bool isInitialValue() const { return m_classType == InitialClass; }
bool isReflectValue() const { return m_classType == ReflectClass; }
bool isShadowValue() const { return m_classType == ShadowClass; }
bool isTimingFunctionValue() const { return m_classType >= CubicBezierTimingFunctionClass && m_classType <= StepsTimingFunctionClass; }
bool isWebKitCSSTransformValue() const { return m_classType == WebKitCSSTransformClass; }
bool isCSSLineBoxContainValue() const { return m_classType == LineBoxContainClass; }
bool isFlexValue() const { return m_classType == FlexClass; }
#if ENABLE(CSS_FILTERS)
bool isWebKitCSSFilterValue() const { return m_classType == WebKitCSSFilterClass; }
#if ENABLE(CSS_SHADERS)
bool isWebKitCSSShaderValue() const { return m_classType == WebKitCSSShaderClass; }
#endif
#endif // ENABLE(CSS_FILTERS)
#if ENABLE(SVG)
bool isSVGColor() const { return m_classType == SVGColorClass || m_classType == SVGPaintClass; }
bool isSVGPaint() const { return m_classType == SVGPaintClass; }
#endif
void addSubresourceStyleURLs(ListHashSet<KURL>&, const CSSStyleSheet*);
protected:
static const size_t ClassTypeBits = 5;
enum ClassType {
// Primitive class types must appear before PrimitiveClass.
ImageClass,
CursorImageClass,
FontFamilyClass,
PrimitiveClass,
// Image generator classes.
CanvasClass,
CrossfadeClass,
LinearGradientClass,
RadialGradientClass,
// Timing function classes.
CubicBezierTimingFunctionClass,
LinearTimingFunctionClass,
StepsTimingFunctionClass,
// Other class types.
AspectRatioClass,
BorderImageClass,
BorderImageSliceClass,
FontFeatureClass,
FontClass,
FontFaceSrcClass,
FunctionClass,
InheritedClass,
InitialClass,
ReflectClass,
ShadowClass,
UnicodeRangeClass,
LineBoxContainClass,
FlexClass,
#if ENABLE(CSS_FILTERS) && ENABLE(CSS_SHADERS)
WebKitCSSShaderClass,
#endif
#if ENABLE(SVG)
SVGColorClass,
SVGPaintClass,
#endif
// List class types must appear after ValueListClass.
ValueListClass,
#if ENABLE(CSS_FILTERS)
WebKitCSSFilterClass,
#endif
WebKitCSSTransformClass,
// Do not append non-list class types here.
};
ClassType classType() const { return static_cast<ClassType>(m_classType); }
explicit CSSValue(ClassType classType)
: m_primitiveUnitType(0)
, m_hasCachedCSSText(false)
, m_isQuirkValue(false)
, m_isImplicitInitialValue(false)
, m_isSpaceSeparatedValueList(false)
, m_classType(classType)
{
}
// NOTE: This class is non-virtual for memory and performance reasons.
// Don't go making it virtual again unless you know exactly what you're doing!
~CSSValue() { }
private:
void destroy();
protected:
// The bits in this section are only used by specific subclasses but kept here
// to maximize struct packing.
// CSSPrimitiveValue bits:
unsigned char m_primitiveUnitType : 7; // CSSPrimitiveValue::UnitTypes
mutable bool m_hasCachedCSSText : 1;
bool m_isQuirkValue : 1;
// CSSInitialValue bits:
bool m_isImplicitInitialValue : 1;
// CSSValueList bits:
bool m_isSpaceSeparatedValueList : 1;
private:
unsigned char m_classType : ClassTypeBits; // ClassType
};
} // namespace WebCore
#endif // CSSValue_h
|
