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
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* atom list for CSS pseudo-classes */
#include "mozilla/ArrayUtils.h"
#include "nsCSSPseudoClasses.h"
#include "nsStaticAtom.h"
#include "mozilla/Preferences.h"
#include "nsString.h"
using namespace mozilla;
using namespace mozilla::css;
// define storage for all atoms
#define CSS_PSEUDO_CLASS(_name, _value, _flags, _pref) \
static nsIAtom* sPseudoClass_##_name;
#include "nsCSSPseudoClassList.h"
#undef CSS_PSEUDO_CLASS
#define CSS_PSEUDO_CLASS(name_, value_, flags_, pref_) \
NS_STATIC_ATOM_BUFFER(name_##_pseudo_class_buffer, value_)
#include "nsCSSPseudoClassList.h"
#undef CSS_PSEUDO_CLASS
#define CSS_PSEUDO_CLASS(name_, value_, flags_, pref_) \
static_assert(!((flags_) & CSS_PSEUDO_CLASS_ENABLED_IN_CHROME) || \
((flags_) & CSS_PSEUDO_CLASS_ENABLED_IN_UA_SHEETS), \
"Pseudo-class '" #name_ "' is enabled in chrome, so it " \
"should also be enabled in UA sheets");
#include "nsCSSPseudoClassList.h"
#undef CSS_PSEUDO_CLASS
// Array of nsStaticAtom for each of the pseudo-classes.
static const nsStaticAtom CSSPseudoClasses_info[] = {
#define CSS_PSEUDO_CLASS(name_, value_, flags_, pref_) \
NS_STATIC_ATOM(name_##_pseudo_class_buffer, &sPseudoClass_##name_),
#include "nsCSSPseudoClassList.h"
#undef CSS_PSEUDO_CLASS
};
// Flags data for each of the pseudo-classes, which must be separate
// from the previous array since there's no place for it in
// nsStaticAtom.
/* static */ const uint32_t
nsCSSPseudoClasses::kPseudoClassFlags[] = {
#define CSS_PSEUDO_CLASS(name_, value_, flags_, pref_) \
flags_,
#include "nsCSSPseudoClassList.h"
#undef CSS_PSEUDO_CLASS
};
/* static */ bool
nsCSSPseudoClasses::sPseudoClassEnabled[] = {
// If the pseudo class has any "ENABLED_IN" flag set, it is disabled by
// default. Note that, if a pseudo class has pref, whatever its default
// value is, it'll later be changed in nsCSSPseudoClasses::AddRefAtoms()
// If the pseudo class has "ENABLED_IN" flags but doesn't have a pref,
// it is an internal pseudo class which is disabled elsewhere.
#define IS_ENABLED_BY_DEFAULT(flags_) \
(!((flags_) & CSS_PSEUDO_CLASS_ENABLED_MASK))
#define CSS_PSEUDO_CLASS(name_, value_, flags_, pref_) \
IS_ENABLED_BY_DEFAULT(flags_),
#include "nsCSSPseudoClassList.h"
#undef CSS_PSEUDO_CLASS
#undef IS_ENABLED_BY_DEFAULT
};
void nsCSSPseudoClasses::AddRefAtoms()
{
NS_RegisterStaticAtoms(CSSPseudoClasses_info);
#define CSS_PSEUDO_CLASS(name_, value_, flags_, pref_) \
if (pref_[0]) { \
auto idx = static_cast<CSSPseudoElementTypeBase>(Type::name_); \
Preferences::AddBoolVarCache(&sPseudoClassEnabled[idx], pref_); \
}
#include "nsCSSPseudoClassList.h"
#undef CSS_PSEUDO_CLASS
}
bool
nsCSSPseudoClasses::HasStringArg(Type aType)
{
return aType == Type::lang ||
aType == Type::mozEmptyExceptChildrenWithLocalname ||
aType == Type::mozSystemMetric ||
aType == Type::mozLocaleDir ||
aType == Type::mozDir ||
aType == Type::dir;
}
bool
nsCSSPseudoClasses::HasNthPairArg(Type aType)
{
return aType == Type::nthChild ||
aType == Type::nthLastChild ||
aType == Type::nthOfType ||
aType == Type::nthLastOfType;
}
bool
nsCSSPseudoClasses::HasSingleSelectorArg(Type aType)
{
return aType == Type::host ||
aType == Type::hostContext;
}
bool
nsCSSPseudoClasses::HasForgivingSelectorListArg(Type aType)
{
return aType == Type::is ||
aType == Type::matches ||
aType == Type::any ||
aType == Type::where;
}
bool
nsCSSPseudoClasses::HasSelectorListArg(Type aType)
{
return HasForgivingSelectorListArg(aType) ||
aType == Type::mozAny ||
aType == Type::host ||
aType == Type::hostContext;
}
bool
nsCSSPseudoClasses::HasOptionalSelectorListArg(Type aType)
{
return aType == Type::host;
}
void
nsCSSPseudoClasses::PseudoTypeToString(Type aType, nsAString& aString)
{
MOZ_ASSERT(aType < Type::Count, "Unexpected type");
auto idx = static_cast<CSSPseudoClassTypeBase>(aType);
(*CSSPseudoClasses_info[idx].mAtom)->ToString(aString);
}
/* static */ CSSPseudoClassType
nsCSSPseudoClasses::GetPseudoType(nsIAtom* aAtom, EnabledState aEnabledState)
{
for (uint32_t i = 0; i < ArrayLength(CSSPseudoClasses_info); ++i) {
if (*CSSPseudoClasses_info[i].mAtom == aAtom) {
Type type = Type(i);
return IsEnabled(type, aEnabledState) ? type : Type::NotPseudo;
}
}
return Type::NotPseudo;
}
/* static */ bool
nsCSSPseudoClasses::IsUserActionPseudoClass(Type aType)
{
// See http://dev.w3.org/csswg/selectors4/#useraction-pseudos
return aType == Type::hover ||
aType == Type::active ||
aType == Type::focus;
}
|
