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/* -*- 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 "TransactionStack.h"
#include "nsCycleCollectionParticipant.h"
#include "nsDebug.h"
#include "nsISupportsUtils.h"
#include "nscore.h"
#include "TransactionItem.h"
namespace mozilla {
TransactionStack::TransactionStack(Type aType)
: nsRefPtrDeque<TransactionItem>(), mType(aType) {}
TransactionStack::~TransactionStack() { Clear(); }
void TransactionStack::Push(TransactionItem* aTransactionItem) {
if (NS_WARN_IF(!aTransactionItem)) {
return;
}
nsRefPtrDeque<TransactionItem>::Push(aTransactionItem);
}
void TransactionStack::Push(
already_AddRefed<TransactionItem> aTransactionItem) {
TransactionItem* transactionItem = aTransactionItem.take();
if (NS_WARN_IF(!transactionItem)) {
return;
}
nsRefPtrDeque<TransactionItem>::Push(dont_AddRef(transactionItem));
}
already_AddRefed<TransactionItem> TransactionStack::Pop() {
return nsRefPtrDeque<TransactionItem>::Pop();
}
already_AddRefed<TransactionItem> TransactionStack::PopBottom() {
return nsRefPtrDeque<TransactionItem>::PopFront();
}
already_AddRefed<TransactionItem> TransactionStack::Peek() const {
RefPtr<TransactionItem> item = nsRefPtrDeque<TransactionItem>::Peek();
return item.forget();
}
already_AddRefed<TransactionItem> TransactionStack::GetItemAt(
size_t aIndex) const {
RefPtr<TransactionItem> item =
nsRefPtrDeque<TransactionItem>::ObjectAt(aIndex);
return item.forget();
}
void TransactionStack::Clear() {
while (GetSize()) {
RefPtr<TransactionItem> item = mType == FOR_UNDO ? Pop() : PopBottom();
}
}
void TransactionStack::DoTraverse(nsCycleCollectionTraversalCallback& cb) {
size_t size = GetSize();
for (size_t i = 0; i < size; ++i) {
auto* item = nsRefPtrDeque<TransactionItem>::ObjectAt(i);
if (item) {
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "transaction stack mDeque[i]");
cb.NoteNativeChild(item,
NS_CYCLE_COLLECTION_PARTICIPANT(TransactionItem));
}
}
}
} // namespace mozilla
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