author Gregory Szorc <gps@mozilla.com>
Wed, 28 Jan 2015 13:37:00 -0800
changeset 120293 5b81998bb7ab5aade597584417ea90b0995c586e
parent 91039 7546dd13db9dfa9a7d78ffb9797d7be3917067f3
child 98529 f4157e8c410708d76703f19e4dfb61859bfe32d8
child 112238 b56f0dfbc628d99d899225cfb73543f78f6d2bf2
permissions -rw-r--r--
Close old branch 14_0_Beta_Hedge

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 * The Original Code is mozilla.org code.
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 * Contributor(s):
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
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 * the terms of any one of the MPL, the GPL or the LGPL.
 * ***** END LICENSE BLOCK ***** */

#ifndef nsTransactionManager_h__
#define nsTransactionManager_h__

#include "nsWeakReference.h"
#include "nsITransactionManager.h"
#include "nsCOMArray.h"
#include "nsITransactionListener.h"
#include "nsCycleCollectionParticipant.h"

class nsITransaction;
class nsITransactionListener;
class nsTransactionItem;
class nsTransactionStack;

/** implementation of a transaction manager object.
class nsTransactionManager : public nsITransactionManager
                           , public nsSupportsWeakReference

  PRInt32                mMaxTransactionCount;
  nsTransactionStack     mDoStack;
  nsTransactionStack     mUndoStack;
  nsTransactionStack     mRedoStack;
  nsCOMArray<nsITransactionListener> mListeners;


  /** The default constructor.
  nsTransactionManager(PRInt32 aMaxTransactionCount=-1);

  /** The default destructor.
  virtual ~nsTransactionManager();

  /* Macro for AddRef(), Release(), and QueryInterface() */

  /* nsITransactionManager method implementations. */

  /* nsTransactionManager specific methods. */
  virtual nsresult ClearUndoStack(void);
  virtual nsresult ClearRedoStack(void);

  virtual nsresult WillDoNotify(nsITransaction *aTransaction, bool *aInterrupt);
  virtual nsresult DidDoNotify(nsITransaction *aTransaction, nsresult aExecuteResult);
  virtual nsresult WillUndoNotify(nsITransaction *aTransaction, bool *aInterrupt);
  virtual nsresult DidUndoNotify(nsITransaction *aTransaction, nsresult aUndoResult);
  virtual nsresult WillRedoNotify(nsITransaction *aTransaction, bool *aInterrupt);
  virtual nsresult DidRedoNotify(nsITransaction *aTransaction, nsresult aRedoResult);
  virtual nsresult WillBeginBatchNotify(bool *aInterrupt);
  virtual nsresult DidBeginBatchNotify(nsresult aResult);
  virtual nsresult WillEndBatchNotify(bool *aInterrupt);
  virtual nsresult DidEndBatchNotify(nsresult aResult);
  virtual nsresult WillMergeNotify(nsITransaction *aTop,
                                   nsITransaction *aTransaction,
                                   bool *aInterrupt);
  virtual nsresult DidMergeNotify(nsITransaction *aTop,
                                  nsITransaction *aTransaction,
                                  bool aDidMerge,
                                  nsresult aMergeResult);


  /* nsTransactionManager specific private methods. */
  virtual nsresult BeginTransaction(nsITransaction *aTransaction);
  virtual nsresult EndTransaction(void);

#endif // nsTransactionManager_h__