gecko-dev/editor/base/TransactionFactory.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef TransactionFactory_h__
#define TransactionFactory_h__
#include "nsISupports.h"
class EditTxn;
/**
* This class instantiates and optionally recycles edit transactions
* A recycler would be a separate static object, since this class does not get instantiated
*/
class TransactionFactory
{
protected:
TransactionFactory();
virtual ~TransactionFactory();
public:
/** return a transaction object of aTxnType, refcounted
* @return NS_ERROR_NO_INTERFACE if aTxnType is unknown,
* NS_ERROR_OUT_OF_MEMORY if the allocations fails.
*/
static nsresult GetNewTransaction(REFNSIID aTxnType, EditTxn **aResult);
};
#endif