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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/. */
#include "mozilla/CachedInheritingStyles.h"
#include "mozilla/ComputedStyle.h"
#include "mozilla/PseudoStyleType.h"
#include "nsCOMPtr.h"
#include "nsWindowSizes.h"
namespace mozilla {
void CachedInheritingStyles::Insert(ComputedStyle* aStyle,
nsAtom* aFunctionalPseudoParameter) {
MOZ_ASSERT(aStyle);
MOZ_ASSERT(aStyle->IsInheritingAnonBox() ||
aStyle->IsLazilyCascadedPseudoElement());
// For entries with a functional parameter, we always use indirect storage
// since direct mode only stores a ComputedStyle* without the parameter.
const bool needsIndirect = aFunctionalPseudoParameter != nullptr;
if (IsEmpty() && !needsIndirect) {
RefPtr<ComputedStyle> s = aStyle;
mBits = reinterpret_cast<uintptr_t>(s.forget().take());
MOZ_ASSERT(!IsEmpty() && !IsIndirect());
} else if (IsIndirect()) {
AsIndirect()->AppendElement(
CachedStyleEntry{aStyle, aFunctionalPseudoParameter});
} else {
IndirectCache* cache = new IndirectCache();
if (!IsEmpty()) {
cache->AppendElement(CachedStyleEntry{dont_AddRef(AsDirect()), nullptr});
}
cache->AppendElement(CachedStyleEntry{aStyle, aFunctionalPseudoParameter});
mBits = reinterpret_cast<uintptr_t>(cache) | 1;
MOZ_ASSERT(IsIndirect());
}
}
ComputedStyle* CachedInheritingStyles::Lookup(
const PseudoStyleRequest& aRequest) const {
MOZ_ASSERT(PseudoStyle::IsPseudoElement(aRequest.mType) ||
PseudoStyle::IsInheritingAnonBox(aRequest.mType));
if (IsIndirect()) {
for (const auto& entry : *AsIndirect()) {
if (entry.mStyle->GetPseudoType() == aRequest.mType &&
entry.mFunctionalPseudoParameter == aRequest.mIdentifier) {
return entry.mStyle;
}
}
return nullptr;
}
// Direct mode only stores non-functional entries.
if (aRequest.mIdentifier) {
return nullptr;
}
ComputedStyle* direct = AsDirect();
return direct && direct->GetPseudoType() == aRequest.mType ? direct : nullptr;
}
void CachedInheritingStyles::AppendTo(
nsTArray<const ComputedStyle*>& aArray) const {
if (IsEmpty()) {
return;
}
if (IsIndirect()) {
for (const auto& entry : *AsIndirect()) {
aArray.AppendElement(entry.mStyle.get());
}
return;
}
aArray.AppendElement(AsDirect());
}
void CachedInheritingStyles::AddSizeOfIncludingThis(nsWindowSizes& aSizes,
size_t* aCVsSize) const {
if (IsIndirect()) {
for (const auto& entry : *AsIndirect()) {
if (!aSizes.mState.HaveSeenPtr(entry.mStyle)) {
entry.mStyle->AddSizeOfIncludingThis(aSizes, aCVsSize);
}
}
return;
}
ComputedStyle* direct = AsDirect();
if (direct && !aSizes.mState.HaveSeenPtr(direct)) {
direct->AddSizeOfIncludingThis(aSizes, aCVsSize);
}
}
} // namespace mozilla
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