зеркало из https://github.com/mozilla/gecko-dev.git
131 строка
4.3 KiB
C++
131 строка
4.3 KiB
C++
/* -*- 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;
|
|
|
|
// 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::dir;
|
|
}
|
|
|
|
bool
|
|
nsCSSPseudoClasses::HasNthPairArg(Type aType)
|
|
{
|
|
return aType == Type::nthChild ||
|
|
aType == Type::nthLastChild ||
|
|
aType == Type::nthOfType ||
|
|
aType == Type::nthLastOfType;
|
|
}
|
|
|
|
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;
|
|
}
|