mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-21 09:15:35 +00:00
265e672179
# ignore-this-changeset --HG-- extra : amend_source : 4d301d3b0b8711c4692392aa76088ba7fd7d1022
44 lines
1.2 KiB
C++
44 lines
1.2 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/. */
|
|
|
|
#ifndef mozilla_TransactionStack_h
|
|
#define mozilla_TransactionStack_h
|
|
|
|
#include "nsDeque.h"
|
|
|
|
class nsCycleCollectionTraversalCallback;
|
|
|
|
namespace mozilla {
|
|
|
|
class TransactionItem;
|
|
|
|
class TransactionStack : private nsDeque {
|
|
public:
|
|
enum Type { FOR_UNDO, FOR_REDO };
|
|
|
|
explicit TransactionStack(Type aType);
|
|
~TransactionStack();
|
|
|
|
void Push(TransactionItem* aTransactionItem);
|
|
void Push(already_AddRefed<TransactionItem> aTransactionItem);
|
|
already_AddRefed<TransactionItem> Pop();
|
|
already_AddRefed<TransactionItem> PopBottom();
|
|
already_AddRefed<TransactionItem> Peek();
|
|
already_AddRefed<TransactionItem> GetItem(int32_t aIndex);
|
|
void Clear();
|
|
int32_t GetSize() const { return static_cast<int32_t>(nsDeque::GetSize()); }
|
|
bool IsEmpty() const { return GetSize() == 0; }
|
|
|
|
void DoUnlink() { Clear(); }
|
|
void DoTraverse(nsCycleCollectionTraversalCallback& cb);
|
|
|
|
private:
|
|
const Type mType;
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif // mozilla_TransactionStack_h
|