gecko-dev/editor/libeditor/base/EditTxn.h

/* -*- 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) 1998-1999
 * 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
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef EditTxn_h__
#define EditTxn_h__

#include "nsITransaction.h"
#include "nsString.h"
#include "nsPIEditorTransaction.h"
#include "nsCycleCollectionParticipant.h"

/**
 * Base class for all document editing transactions.
 */
class EditTxn : public nsITransaction,
                public nsPIEditorTransaction
{
public:
  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(EditTxn, nsITransaction)

  virtual ~EditTxn();

  NS_IMETHOD RedoTransaction(void);
  NS_IMETHOD GetIsTransient(bool *aIsTransient);
  NS_IMETHOD Merge(nsITransaction *aTransaction, bool *aDidMerge);
};

#define NS_DECL_EDITTXN \
  NS_IMETHOD DoTransaction(); \
  NS_IMETHOD UndoTransaction(); \
  NS_IMETHOD GetTxnDescription(nsAString& aTxnDescription);

#endif