gecko-dev/layout/style/ServoStyleContext.cpp

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2.2 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
#include "mozilla/ServoStyleContext.h"
#include "nsCSSAnonBoxes.h"
#include "nsStyleConsts.h"
#include "nsStyleStruct.h"
#include "nsPresContext.h"
#include "nsCSSRuleProcessor.h"
#include "mozilla/dom/HTMLBodyElement.h"
#include "mozilla/ServoBindings.h"
namespace mozilla {
ServoStyleContext::ServoStyleContext(
nsPresContext* aPresContext,
nsIAtom* aPseudoTag,
CSSPseudoElementType aPseudoType,
ServoComputedDataForgotten aComputedValues)
: nsStyleContext(aPseudoTag, aPseudoType)
, mPresContext(aPresContext)
, mSource(aComputedValues)
{
AddStyleBit(Servo_ComputedValues_GetStyleBits(this));
MOZ_ASSERT(ComputedData());
// No need to call ApplyStyleFixups here, since fixups are handled by Servo when
// producing the ServoComputedData.
}
ServoStyleContext*
ServoStyleContext::GetCachedInheritingAnonBoxStyle(nsIAtom* aAnonBox) const
{
MOZ_ASSERT(nsCSSAnonBoxes::IsInheritingAnonBox(aAnonBox));
// See the reasoning in SetCachedInheritingAnonBoxStyle to understand why we
// can't use the cache in this case.
if (IsInheritingAnonBox()) {
return nullptr;
}
auto* current = mNextInheritingAnonBoxStyle.get();
while (current && current->GetPseudo() != aAnonBox) {
current = current->mNextInheritingAnonBoxStyle.get();
}
return current;
}
ServoStyleContext*
ServoStyleContext::GetCachedLazyPseudoStyle(CSSPseudoElementType aPseudo) const
{
MOZ_ASSERT(aPseudo != CSSPseudoElementType::NotPseudo &&
aPseudo != CSSPseudoElementType::InheritingAnonBox &&
aPseudo != CSSPseudoElementType::NonInheritingAnonBox);
MOZ_ASSERT(!IsLazilyCascadedPseudoElement(), "Lazy pseudos can't inherit lazy pseudos");
if (nsCSSPseudoElements::PseudoElementSupportsUserActionState(aPseudo)) {
return nullptr;
}
auto* current = mNextLazyPseudoStyle.get();
while (current && current->GetPseudoType() != aPseudo) {
current = current->mNextLazyPseudoStyle.get();
}
return current;
}
} // namespace mozilla