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In CSSLexer.h and ServoCSSRuleList.h, this patch is providing the type for the header's main class to inherit from. In nsCSSPseudoClasses.h, this patch is providing an enum type (CSSEnabledState) that's used in this header file. MozReview-Commit-ID: 1YUVyi47jmA --HG-- extra : rebase_source : 10a0283bb3b68ce8ee7d0d605691a461eafb6403
92 lines
3.1 KiB
C++
92 lines
3.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* atom list for CSS pseudo-classes */
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#ifndef nsCSSPseudoClasses_h___
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#define nsCSSPseudoClasses_h___
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#include "nsStringFwd.h"
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#include "mozilla/CSSEnabledState.h"
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// The following two flags along with the pref defines where this pseudo
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// class can be used:
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// * If none of the two flags is presented, the pref completely controls
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// the availability of this pseudo class. And in that case, if it has
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// no pref, this property is usable everywhere.
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// * If any of the flags is set, this pseudo class is always enabled in
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// the specific contexts regardless of the value of the pref. If there
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// is no pref for this pseudo class at all in this case, it is an
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// internal-only pseudo class, which cannot be used anywhere else.
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#define CSS_PSEUDO_CLASS_ENABLED_MASK (3<<0)
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#define CSS_PSEUDO_CLASS_ENABLED_IN_UA_SHEETS (1<<0)
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#define CSS_PSEUDO_CLASS_ENABLED_IN_CHROME (1<<1)
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#define CSS_PSEUDO_CLASS_ENABLED_IN_UA_SHEETS_AND_CHROME \
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(CSS_PSEUDO_CLASS_ENABLED_IN_UA_SHEETS | CSS_PSEUDO_CLASS_ENABLED_IN_CHROME)
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class nsIAtom;
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namespace mozilla {
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// The total count of CSSPseudoClassType is less than 256,
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// so use uint8_t as its underlying type.
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typedef uint8_t CSSPseudoClassTypeBase;
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enum class CSSPseudoClassType : CSSPseudoClassTypeBase
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{
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#define CSS_PSEUDO_CLASS(_name, _value, _flags, _pref) \
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_name,
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#include "nsCSSPseudoClassList.h"
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#undef CSS_PSEUDO_CLASS
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Count,
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NotPseudo, // This value MUST be second last! SelectorMatches depends on it.
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MAX
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};
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} // namespace mozilla
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class nsCSSPseudoClasses
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{
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typedef mozilla::CSSPseudoClassType Type;
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typedef mozilla::CSSEnabledState EnabledState;
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public:
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static void AddRefAtoms();
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static Type GetPseudoType(nsIAtom* aAtom, EnabledState aEnabledState);
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static bool HasStringArg(Type aType);
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static bool HasNthPairArg(Type aType);
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static bool HasSelectorListArg(Type aType) {
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return aType == Type::any;
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}
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static bool IsUserActionPseudoClass(Type aType);
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// Should only be used on types other than Count and NotPseudoClass
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static void PseudoTypeToString(Type aType, nsAString& aString);
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static bool IsEnabled(Type aType, EnabledState aEnabledState)
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{
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auto index = static_cast<size_t>(aType);
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MOZ_ASSERT(index < static_cast<size_t>(Type::Count));
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if (sPseudoClassEnabled[index] ||
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aEnabledState == EnabledState::eIgnoreEnabledState) {
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return true;
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}
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auto flags = kPseudoClassFlags[index];
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if (((aEnabledState & EnabledState::eInChrome) &&
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(flags & CSS_PSEUDO_CLASS_ENABLED_IN_CHROME)) ||
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((aEnabledState & EnabledState::eInUASheets) &&
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(flags & CSS_PSEUDO_CLASS_ENABLED_IN_UA_SHEETS))) {
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return true;
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}
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return false;
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}
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private:
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static const uint32_t kPseudoClassFlags[size_t(Type::Count)];
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static bool sPseudoClassEnabled[size_t(Type::Count)];
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};
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#endif /* nsCSSPseudoClasses_h___ */
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