зеркало из https://github.com/mozilla/gecko-dev.git
122 строки
3.9 KiB
C++
122 строки
3.9 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 "mozilla/ArrayUtils.h"
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#include "nsCSSPseudoElements.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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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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// Separate from the array above so that we can have an array of
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// nsStaticAtom (to pass to NS_RegisterStaticAtoms and
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// nsAtomListUtils::IsMember), but with corresponding indices (so the
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// i-th element of this array is the flags for the i-th pseudo-element
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// in the previous array).
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static const uint32_t CSSPseudoElements_flags[] = {
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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 ==
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PseudoElementHasFlags(GetPseudoType(aAtom), 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 */ nsCSSPseudoElements::Type
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nsCSSPseudoElements::GetPseudoType(nsIAtom *aAtom)
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{
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for (uint32_t i = 0; i < ArrayLength(CSSPseudoElements_info); ++i) {
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if (*CSSPseudoElements_info[i].mAtom == aAtom) {
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return Type(i);
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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 ePseudo_XULTree;
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}
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#endif
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return ePseudo_AnonBox;
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}
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return ePseudo_NotPseudoElement;
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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 < nsCSSPseudoElements::ePseudo_PseudoElementCount,
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"Unexpected type");
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return *CSSPseudoElements_info[aType].mAtom;
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}
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/* static */ uint32_t
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nsCSSPseudoElements::FlagsForPseudoElement(const Type aType)
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{
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size_t index = static_cast<size_t>(aType);
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NS_ASSERTION(index < ArrayLength(CSSPseudoElements_flags),
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"argument must be a pseudo-element");
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return CSSPseudoElements_flags[index];
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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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