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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_PseudoStyleType_h
#define mozilla_PseudoStyleType_h
#include "mozilla/RefPtr.h"
#include "nsAtom.h"
#include "PLDHashTable.h"
#include <cstddef>
#include <cstdint>
#include <iosfwd>
namespace mozilla {
namespace dom {
class Element;
} // namespace dom
// The kind of pseudo-style that we have. This can be:
//
// * CSS pseudo-elements (see nsCSSPseudoElements.h).
// * Anonymous boxes (see nsCSSAnonBoxes.h).
// * XUL tree pseudo-element stuff.
//
// This roughly corresponds to the `PseudoElement` enum in Rust code.
enum class PseudoStyleType : uint8_t {
// If CSS pseudo-elements stop being first here, change GetPseudoType.
#define CSS_PSEUDO_ELEMENT(_name, _value, _flags) _name,
#include "nsCSSPseudoElementList.h"
#undef CSS_PSEUDO_ELEMENT
CSSPseudoElementsEnd,
AnonBoxesStart = CSSPseudoElementsEnd,
InheritingAnonBoxesStart = CSSPseudoElementsEnd,
// Dummy variant so the next variant also has the same discriminant as
// AnonBoxesStart.
__reset_1 = AnonBoxesStart - 1,
#define CSS_ANON_BOX(_name, _str) _name,
#define CSS_NON_INHERITING_ANON_BOX(_name, _str)
#define CSS_WRAPPER_ANON_BOX(_name, _str)
#include "nsCSSAnonBoxList.h"
#undef CSS_ANON_BOX
#undef CSS_WRAPPER_ANON_BOX
#undef CSS_NON_INHERITING_ANON_BOX
// Wrapper anon boxes are inheriting anon boxes.
WrapperAnonBoxesStart,
// Dummy variant so the next variant also has the same discriminant as
// WrapperAnonBoxesStart.
__reset_2 = WrapperAnonBoxesStart - 1,
#define CSS_ANON_BOX(_name, _str)
#define CSS_NON_INHERITING_ANON_BOX(_name, _str)
#define CSS_WRAPPER_ANON_BOX(_name, _str) _name,
#include "nsCSSAnonBoxList.h"
#undef CSS_ANON_BOX
#undef CSS_WRAPPER_ANON_BOX
#undef CSS_NON_INHERITING_ANON_BOX
WrapperAnonBoxesEnd,
InheritingAnonBoxesEnd = WrapperAnonBoxesEnd,
NonInheritingAnonBoxesStart = WrapperAnonBoxesEnd,
__reset_3 = NonInheritingAnonBoxesStart - 1,
#define CSS_ANON_BOX(_name, _str)
#define CSS_NON_INHERITING_ANON_BOX(_name, _str) _name,
#include "nsCSSAnonBoxList.h"
#undef CSS_ANON_BOX
#undef CSS_NON_INHERITING_ANON_BOX
NonInheritingAnonBoxesEnd,
AnonBoxesEnd = NonInheritingAnonBoxesEnd,
XULTree = AnonBoxesEnd,
NotPseudo,
MAX
};
std::ostream& operator<<(std::ostream&, PseudoStyleType);
class PseudoStyle final {
public:
using Type = PseudoStyleType;
// This must match EAGER_PSEUDO_COUNT in Rust code.
static const size_t kEagerPseudoCount = 4;
static bool IsPseudoElement(Type aType) {
return aType < Type::CSSPseudoElementsEnd;
}
static bool IsAnonBox(Type aType) {
return aType >= Type::AnonBoxesStart && aType < Type::AnonBoxesEnd;
}
static bool IsInheritingAnonBox(Type aType) {
return aType >= Type::InheritingAnonBoxesStart &&
aType < Type::InheritingAnonBoxesEnd;
}
static bool IsNonInheritingAnonBox(Type aType) {
return aType >= Type::NonInheritingAnonBoxesStart &&
aType < Type::NonInheritingAnonBoxesEnd;
}
static bool IsWrapperAnonBox(Type aType) {
return aType >= Type::WrapperAnonBoxesStart &&
aType < Type::WrapperAnonBoxesEnd;
}
static bool IsNamedViewTransitionPseudoElement(Type aType) {
return aType == Type::viewTransitionGroup ||
aType == Type::viewTransitionImagePair ||
aType == Type::viewTransitionOld || aType == Type::viewTransitionNew;
}
static bool IsViewTransitionPseudoElement(Type aType) {
return aType == Type::viewTransition ||
IsNamedViewTransitionPseudoElement(aType);
}
};
/*
* The psuedo style request is used to get the pseudo style of an element. This
* include a pseudo style type and an identidier which is used for functional
* pseudo style.
*/
struct PseudoStyleRequest {
PseudoStyleRequest() = default;
PseudoStyleRequest(PseudoStyleRequest&&) = default;
PseudoStyleRequest(const PseudoStyleRequest&) = default;
PseudoStyleRequest& operator=(PseudoStyleRequest&&) = default;
PseudoStyleRequest& operator=(const PseudoStyleRequest&) = default;
explicit PseudoStyleRequest(PseudoStyleType aType) : mType(aType) {}
PseudoStyleRequest(PseudoStyleType aType, nsAtom* aIdentifier)
: mType(aType), mIdentifier(aIdentifier) {}
bool operator==(const PseudoStyleRequest& aOther) const {
return mType == aOther.mType && mIdentifier == aOther.mIdentifier;
}
bool IsNotPseudo() const { return mType == PseudoStyleType::NotPseudo; }
bool IsPseudoElementOrNotPseudo() const {
return IsNotPseudo() || PseudoStyle::IsPseudoElement(mType);
}
bool IsViewTransition() const {
return PseudoStyle::IsViewTransitionPseudoElement(mType);
}
static PseudoStyleRequest NotPseudo() { return PseudoStyleRequest(); }
static PseudoStyleRequest Before() {
return PseudoStyleRequest(PseudoStyleType::before);
}
static PseudoStyleRequest After() {
return PseudoStyleRequest(PseudoStyleType::after);
}
static PseudoStyleRequest Marker() {
return PseudoStyleRequest(PseudoStyleType::marker);
}
PseudoStyleType mType = PseudoStyleType::NotPseudo;
RefPtr<nsAtom> mIdentifier;
};
class PseudoStyleRequestHashKey : public PLDHashEntryHdr {
public:
using KeyType = PseudoStyleRequest;
using KeyTypePointer = const PseudoStyleRequest*;
explicit PseudoStyleRequestHashKey(KeyTypePointer aKey) : mRequest(*aKey) {}
PseudoStyleRequestHashKey(PseudoStyleRequestHashKey&& aOther) = default;
~PseudoStyleRequestHashKey() = default;
KeyType GetKey() const { return mRequest; }
bool KeyEquals(KeyTypePointer aKey) const { return *aKey == mRequest; }
static KeyTypePointer KeyToPointer(KeyType& aKey) { return &aKey; }
static PLDHashNumber HashKey(KeyTypePointer aKey) {
return mozilla::HashGeneric(
static_cast<uint8_t>(aKey->mType),
aKey->mIdentifier ? aKey->mIdentifier->hash() : 0);
}
enum { ALLOW_MEMMOVE = true };
private:
PseudoStyleRequest mRequest;
};
} // namespace mozilla
#endif
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