layout/style/nsCSSPseudoClasses.cpp

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/layout/style/nsCSSPseudoClasses.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,101 @@
     1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
     1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.8 +
     1.9 +/* atom list for CSS pseudo-classes */
    1.10 +
    1.11 +#include "mozilla/ArrayUtils.h"
    1.12 +
    1.13 +#include "nsCSSPseudoClasses.h"
    1.14 +#include "nsStaticAtom.h"
    1.15 +#include "mozilla/Preferences.h"
    1.16 +#include "nsString.h"
    1.17 +
    1.18 +using namespace mozilla;
    1.19 +
    1.20 +// define storage for all atoms
    1.21 +#define CSS_PSEUDO_CLASS(_name, _value, _pref) \
    1.22 +  static nsIAtom* sPseudoClass_##_name;
    1.23 +#include "nsCSSPseudoClassList.h"
    1.24 +#undef CSS_PSEUDO_CLASS
    1.25 +
    1.26 +#define CSS_PSEUDO_CLASS(name_, value_, pref_)  \
    1.27 +  NS_STATIC_ATOM_BUFFER(name_##_pseudo_class_buffer, value_)
    1.28 +#include "nsCSSPseudoClassList.h"
    1.29 +#undef CSS_PSEUDO_CLASS
    1.30 +
    1.31 +static const nsStaticAtom CSSPseudoClasses_info[] = {
    1.32 +#define CSS_PSEUDO_CLASS(name_, value_, pref_)            \
    1.33 +  NS_STATIC_ATOM(name_##_pseudo_class_buffer, &sPseudoClass_##name_),
    1.34 +#include "nsCSSPseudoClassList.h"
    1.35 +#undef CSS_PSEUDO_CLASS
    1.36 +};
    1.37 +
    1.38 +static bool sPseudoClassEnabled[] = {
    1.39 +#define CSS_PSEUDO_CLASS(name_, value_, pref_)            \
    1.40 +  true,
    1.41 +#include "nsCSSPseudoClassList.h"
    1.42 +#undef CSS_PSEUDO_CLASS
    1.43 +};  
    1.44 +
    1.45 +void nsCSSPseudoClasses::AddRefAtoms()
    1.46 +{
    1.47 +  NS_RegisterStaticAtoms(CSSPseudoClasses_info);
    1.48 +  
    1.49 +#define CSS_PSEUDO_CLASS(name_, value_, pref_)                               \
    1.50 +  if (pref_[0]) {                                                            \
    1.51 +    Preferences::AddBoolVarCache(&sPseudoClassEnabled[ePseudoClass_##name_], \
    1.52 +                                 pref_);                                     \
    1.53 +  }
    1.54 +#include "nsCSSPseudoClassList.h"
    1.55 +#undef CSS_PSEUDO_CLASS
    1.56 +}
    1.57 +
    1.58 +bool
    1.59 +nsCSSPseudoClasses::HasStringArg(Type aType)
    1.60 +{
    1.61 +  return aType == ePseudoClass_lang ||
    1.62 +         aType == ePseudoClass_mozEmptyExceptChildrenWithLocalname ||
    1.63 +         aType == ePseudoClass_mozSystemMetric ||
    1.64 +         aType == ePseudoClass_mozLocaleDir ||
    1.65 +         aType == ePseudoClass_dir;
    1.66 +}
    1.67 +
    1.68 +bool
    1.69 +nsCSSPseudoClasses::HasNthPairArg(Type aType)
    1.70 +{
    1.71 +  return aType == ePseudoClass_nthChild ||
    1.72 +         aType == ePseudoClass_nthLastChild ||
    1.73 +         aType == ePseudoClass_nthOfType ||
    1.74 +         aType == ePseudoClass_nthLastOfType;
    1.75 +}
    1.76 +
    1.77 +void
    1.78 +nsCSSPseudoClasses::PseudoTypeToString(Type aType, nsAString& aString)
    1.79 +{
    1.80 +  NS_ABORT_IF_FALSE(aType < ePseudoClass_Count, "Unexpected type");
    1.81 +  NS_ABORT_IF_FALSE(aType >= 0, "Very unexpected type");
    1.82 +  (*CSSPseudoClasses_info[aType].mAtom)->ToString(aString);
    1.83 +}
    1.84 +
    1.85 +nsCSSPseudoClasses::Type
    1.86 +nsCSSPseudoClasses::GetPseudoType(nsIAtom* aAtom)
    1.87 +{
    1.88 +  for (uint32_t i = 0; i < ArrayLength(CSSPseudoClasses_info); ++i) {
    1.89 +    if (*CSSPseudoClasses_info[i].mAtom == aAtom) {
    1.90 +      return sPseudoClassEnabled[i] ? Type(i) : ePseudoClass_NotPseudoClass;
    1.91 +    }
    1.92 +  }
    1.93 +
    1.94 +  return nsCSSPseudoClasses::ePseudoClass_NotPseudoClass;
    1.95 +}
    1.96 +
    1.97 +/* static */ bool
    1.98 +nsCSSPseudoClasses::IsUserActionPseudoClass(Type aType)
    1.99 +{
   1.100 +  // See http://dev.w3.org/csswg/selectors4/#useraction-pseudos
   1.101 +  return aType == ePseudoClass_hover ||
   1.102 +         aType == ePseudoClass_active ||
   1.103 +         aType == ePseudoClass_focus;
   1.104 +}

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