зеркало из https://github.com/mozilla/gecko-dev.git
77 строки
2.2 KiB
C++
77 строки
2.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "TransactionStack.h"
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#include "nsCOMPtr.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsDebug.h"
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#include "nsISupportsUtils.h"
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#include "nscore.h"
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#include "TransactionItem.h"
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namespace mozilla {
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TransactionStack::TransactionStack(Type aType)
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: nsRefPtrDeque<TransactionItem>(), mType(aType) {}
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TransactionStack::~TransactionStack() { Clear(); }
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void TransactionStack::Push(TransactionItem* aTransactionItem) {
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if (NS_WARN_IF(!aTransactionItem)) {
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return;
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}
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nsRefPtrDeque<TransactionItem>::Push(aTransactionItem);
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}
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void TransactionStack::Push(
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already_AddRefed<TransactionItem> aTransactionItem) {
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TransactionItem* transactionItem = aTransactionItem.take();
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if (NS_WARN_IF(!transactionItem)) {
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return;
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}
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nsRefPtrDeque<TransactionItem>::Push(dont_AddRef(transactionItem));
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}
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already_AddRefed<TransactionItem> TransactionStack::Pop() {
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return nsRefPtrDeque<TransactionItem>::Pop();
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}
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already_AddRefed<TransactionItem> TransactionStack::PopBottom() {
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return nsRefPtrDeque<TransactionItem>::PopFront();
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}
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already_AddRefed<TransactionItem> TransactionStack::Peek() const {
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RefPtr<TransactionItem> item = nsRefPtrDeque<TransactionItem>::Peek();
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return item.forget();
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}
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already_AddRefed<TransactionItem> TransactionStack::GetItemAt(
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size_t aIndex) const {
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RefPtr<TransactionItem> item =
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nsRefPtrDeque<TransactionItem>::ObjectAt(aIndex);
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return item.forget();
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}
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void TransactionStack::Clear() {
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while (GetSize()) {
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RefPtr<TransactionItem> item = mType == FOR_UNDO ? Pop() : PopBottom();
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}
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}
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void TransactionStack::DoTraverse(nsCycleCollectionTraversalCallback& cb) {
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size_t size = GetSize();
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for (size_t i = 0; i < size; ++i) {
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auto* item = nsRefPtrDeque<TransactionItem>::ObjectAt(i);
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if (item) {
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NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "transaction stack mDeque[i]");
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cb.NoteNativeChild(item,
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NS_CYCLE_COLLECTION_PARTICIPANT(TransactionItem));
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}
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}
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}
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} // namespace mozilla
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