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b537f110e2
The idea is to be able to call the right function during style resolution time without doing a linear walk via nsCSSAnonBoxes::IsNonInheritingAnonBox. MozReview-Commit-ID: JKt33GggTjz --HG-- extra : rebase_source : fcf477dcef8529c803bf97b1d3a16f8f4fcea39f
126 lines
4.0 KiB
C++
126 lines
4.0 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-elements */
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#include "nsCSSPseudoElements.h"
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#include "mozilla/ArrayUtils.h"
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#include "nsAtomListUtils.h"
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#include "nsStaticAtom.h"
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#include "nsCSSAnonBoxes.h"
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using namespace mozilla;
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// define storage for all atoms
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#define CSS_PSEUDO_ELEMENT(name_, value_, flags_) \
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nsICSSPseudoElement* nsCSSPseudoElements::name_;
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#include "nsCSSPseudoElementList.h"
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#undef CSS_PSEUDO_ELEMENT
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#define CSS_PSEUDO_ELEMENT(name_, value_, flags_) \
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NS_STATIC_ATOM_BUFFER(name_##_pseudo_element_buffer, value_)
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#include "nsCSSPseudoElementList.h"
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#undef CSS_PSEUDO_ELEMENT
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// Array of nsStaticAtom for each of the pseudo-elements.
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static const nsStaticAtom CSSPseudoElements_info[] = {
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#define CSS_PSEUDO_ELEMENT(name_, value_, flags_) \
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NS_STATIC_ATOM(name_##_pseudo_element_buffer, (nsIAtom**)&nsCSSPseudoElements::name_),
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#include "nsCSSPseudoElementList.h"
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#undef CSS_PSEUDO_ELEMENT
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};
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// Flags data for each of the pseudo-elements, which must be separate
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// from the previous array since there's no place for it in
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// nsStaticAtom.
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/* static */ const uint32_t
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nsCSSPseudoElements::kPseudoElementFlags[] = {
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#define CSS_PSEUDO_ELEMENT(name_, value_, flags_) \
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flags_,
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#include "nsCSSPseudoElementList.h"
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#undef CSS_PSEUDO_ELEMENT
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};
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void nsCSSPseudoElements::AddRefAtoms()
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{
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NS_RegisterStaticAtoms(CSSPseudoElements_info);
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}
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bool nsCSSPseudoElements::IsPseudoElement(nsIAtom *aAtom)
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{
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return nsAtomListUtils::IsMember(aAtom, CSSPseudoElements_info,
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ArrayLength(CSSPseudoElements_info));
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}
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/* static */ bool
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nsCSSPseudoElements::IsCSS2PseudoElement(nsIAtom *aAtom)
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{
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// We don't implement this using PseudoElementHasFlags because callers
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// want to pass things that could be anon boxes.
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NS_ASSERTION(nsCSSPseudoElements::IsPseudoElement(aAtom) ||
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nsCSSAnonBoxes::IsAnonBox(aAtom),
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"must be pseudo element or anon box");
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bool result = aAtom == nsCSSPseudoElements::after ||
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aAtom == nsCSSPseudoElements::before ||
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aAtom == nsCSSPseudoElements::firstLetter ||
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aAtom == nsCSSPseudoElements::firstLine;
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NS_ASSERTION(nsCSSAnonBoxes::IsAnonBox(aAtom) ||
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result == PseudoElementHasFlags(
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GetPseudoType(aAtom, EnabledState::eIgnoreEnabledState),
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CSS_PSEUDO_ELEMENT_IS_CSS2),
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"result doesn't match flags");
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return result;
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}
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/* static */ CSSPseudoElementType
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nsCSSPseudoElements::GetPseudoType(nsIAtom *aAtom, EnabledState aEnabledState)
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{
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for (CSSPseudoElementTypeBase i = 0;
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i < ArrayLength(CSSPseudoElements_info);
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++i) {
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if (*CSSPseudoElements_info[i].mAtom == aAtom) {
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auto type = static_cast<Type>(i);
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// ::moz-placeholder is an alias for ::placeholder
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if (type == CSSPseudoElementType::mozPlaceholder) {
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type = CSSPseudoElementType::placeholder;
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}
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return IsEnabled(type, aEnabledState) ? type : Type::NotPseudo;
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}
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}
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if (nsCSSAnonBoxes::IsAnonBox(aAtom)) {
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#ifdef MOZ_XUL
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if (nsCSSAnonBoxes::IsTreePseudoElement(aAtom)) {
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return Type::XULTree;
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}
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#endif
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if (nsCSSAnonBoxes::IsNonInheritingAnonBox(aAtom)) {
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return Type::NonInheritingAnonBox;
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}
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return Type::InheritingAnonBox;
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}
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return Type::NotPseudo;
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}
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/* static */ nsIAtom*
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nsCSSPseudoElements::GetPseudoAtom(Type aType)
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{
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NS_ASSERTION(aType < Type::Count, "Unexpected type");
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return *CSSPseudoElements_info[
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static_cast<CSSPseudoElementTypeBase>(aType)].mAtom;
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}
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/* static */ bool
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nsCSSPseudoElements::PseudoElementSupportsUserActionState(const Type aType)
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{
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return PseudoElementHasFlags(aType,
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CSS_PSEUDO_ELEMENT_SUPPORTS_USER_ACTION_STATE);
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}
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