michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: /* atom list for CSS pseudo-elements */
michael@0: 
michael@0: #include "mozilla/ArrayUtils.h"
michael@0: 
michael@0: #include "nsCSSPseudoElements.h"
michael@0: #include "nsAtomListUtils.h"
michael@0: #include "nsStaticAtom.h"
michael@0: #include "nsCSSAnonBoxes.h"
michael@0: 
michael@0: using namespace mozilla;
michael@0: 
michael@0: // define storage for all atoms
michael@0: #define CSS_PSEUDO_ELEMENT(name_, value_, flags_) \
michael@0:   nsICSSPseudoElement* nsCSSPseudoElements::name_;
michael@0: #include "nsCSSPseudoElementList.h"
michael@0: #undef CSS_PSEUDO_ELEMENT
michael@0: 
michael@0: #define CSS_PSEUDO_ELEMENT(name_, value_, flags_) \
michael@0:   NS_STATIC_ATOM_BUFFER(name_##_pseudo_element_buffer, value_)
michael@0: #include "nsCSSPseudoElementList.h"
michael@0: #undef CSS_PSEUDO_ELEMENT
michael@0: 
michael@0: static const nsStaticAtom CSSPseudoElements_info[] = {
michael@0: #define CSS_PSEUDO_ELEMENT(name_, value_, flags_) \
michael@0:   NS_STATIC_ATOM(name_##_pseudo_element_buffer, (nsIAtom**)&nsCSSPseudoElements::name_),
michael@0: #include "nsCSSPseudoElementList.h"
michael@0: #undef CSS_PSEUDO_ELEMENT
michael@0: };
michael@0: 
michael@0: // Separate from the array above so that we can have an array of
michael@0: // nsStaticAtom (to pass to NS_RegisterStaticAtoms and
michael@0: // nsAtomListUtils::IsMember), but with corresponding indices (so the
michael@0: // i-th element of this array is the flags for the i-th pseudo-element
michael@0: // in the previous array).
michael@0: static const uint32_t CSSPseudoElements_flags[] = {
michael@0: #define CSS_PSEUDO_ELEMENT(name_, value_, flags_) \
michael@0:   flags_,
michael@0: #include "nsCSSPseudoElementList.h"
michael@0: #undef CSS_PSEUDO_ELEMENT
michael@0: };
michael@0: 
michael@0: void nsCSSPseudoElements::AddRefAtoms()
michael@0: {
michael@0:   NS_RegisterStaticAtoms(CSSPseudoElements_info);
michael@0: }
michael@0: 
michael@0: bool nsCSSPseudoElements::IsPseudoElement(nsIAtom *aAtom)
michael@0: {
michael@0:   return nsAtomListUtils::IsMember(aAtom, CSSPseudoElements_info,
michael@0:                                    ArrayLength(CSSPseudoElements_info));
michael@0: }
michael@0: 
michael@0: /* static */ bool
michael@0: nsCSSPseudoElements::IsCSS2PseudoElement(nsIAtom *aAtom)
michael@0: {
michael@0:   // We don't implement this using PseudoElementHasFlags because callers
michael@0:   // want to pass things that could be anon boxes.
michael@0:   NS_ASSERTION(nsCSSPseudoElements::IsPseudoElement(aAtom) ||
michael@0:                nsCSSAnonBoxes::IsAnonBox(aAtom),
michael@0:                "must be pseudo element or anon box");
michael@0:   bool result = aAtom == nsCSSPseudoElements::after ||
michael@0:                   aAtom == nsCSSPseudoElements::before ||
michael@0:                   aAtom == nsCSSPseudoElements::firstLetter ||
michael@0:                   aAtom == nsCSSPseudoElements::firstLine;
michael@0:   NS_ASSERTION(nsCSSAnonBoxes::IsAnonBox(aAtom) ||
michael@0:                result ==
michael@0:                  PseudoElementHasFlags(GetPseudoType(aAtom), CSS_PSEUDO_ELEMENT_IS_CSS2),
michael@0:                "result doesn't match flags");
michael@0:   return result;
michael@0: }
michael@0: 
michael@0: /* static */ nsCSSPseudoElements::Type
michael@0: nsCSSPseudoElements::GetPseudoType(nsIAtom *aAtom)
michael@0: {
michael@0:   for (uint32_t i = 0; i < ArrayLength(CSSPseudoElements_info); ++i) {
michael@0:     if (*CSSPseudoElements_info[i].mAtom == aAtom) {
michael@0:       return Type(i);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   if (nsCSSAnonBoxes::IsAnonBox(aAtom)) {
michael@0: #ifdef MOZ_XUL
michael@0:     if (nsCSSAnonBoxes::IsTreePseudoElement(aAtom)) {
michael@0:       return ePseudo_XULTree;
michael@0:     }
michael@0: #endif
michael@0: 
michael@0:     return ePseudo_AnonBox;
michael@0:   }
michael@0: 
michael@0:   return ePseudo_NotPseudoElement;
michael@0: }
michael@0: 
michael@0: /* static */ nsIAtom*
michael@0: nsCSSPseudoElements::GetPseudoAtom(Type aType)
michael@0: {
michael@0:   NS_ASSERTION(aType < nsCSSPseudoElements::ePseudo_PseudoElementCount,
michael@0:                "Unexpected type");
michael@0:   return *CSSPseudoElements_info[aType].mAtom;
michael@0: }
michael@0: 
michael@0: /* static */ uint32_t
michael@0: nsCSSPseudoElements::FlagsForPseudoElement(const Type aType)
michael@0: {
michael@0:   size_t index = static_cast<size_t>(aType);
michael@0:   NS_ASSERTION(index < ArrayLength(CSSPseudoElements_flags),
michael@0:                "argument must be a pseudo-element");
michael@0:   return CSSPseudoElements_flags[index];
michael@0: }
michael@0: 
michael@0: /* static */ bool
michael@0: nsCSSPseudoElements::PseudoElementSupportsUserActionState(const Type aType)
michael@0: {
michael@0:   return PseudoElementHasFlags(aType,
michael@0:                                CSS_PSEUDO_ELEMENT_SUPPORTS_USER_ACTION_STATE);
michael@0: }