The Tor Browser: editor/txmgr/src/nsTransactionStack.h@7e26c7da4463

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef nsTransactionStack_h__

     7 #define nsTransactionStack_h__

     9 #include <deque>

    10 #include "nsAutoPtr.h"

    12 class nsCycleCollectionTraversalCallback;

    13 class nsTransactionItem;

    15 class nsTransactionStack

    16 {

    17 public:

    18   enum Type { FOR_UNDO, FOR_REDO };

    20   explicit nsTransactionStack(Type aType);

    21   ~nsTransactionStack();

    23   void Push(nsTransactionItem *aTransactionItem);

    24   already_AddRefed<nsTransactionItem> Pop();

    25   already_AddRefed<nsTransactionItem> PopBottom();

    26   already_AddRefed<nsTransactionItem> Peek();

    27   already_AddRefed<nsTransactionItem> GetItem(int32_t aIndex);

    28   void Clear();

    29   int32_t GetSize() { return mDeque.size(); }

    31   void DoUnlink() { Clear(); }

    32   void DoTraverse(nsCycleCollectionTraversalCallback &cb);

    34 private:

    35   std::deque<nsRefPtr<nsTransactionItem> > mDeque;

    36   const Type mType;

    37 };

    39 #endif // nsTransactionStack_h__

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