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69 lines
2.0 KiB
69 lines
2.0 KiB
//-*-C++-*-
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/*
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**************************************************************************
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description
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--------------------
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copyright : (C) 2000-2001 by Andreas Zehender
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email : zehender@kde.org
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**************************************************************************
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**************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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**************************************************************************/
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#ifndef PMDATACHANGECOMMAND_H
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#define PMDATACHANGECOMMAND_H
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "pmcommand.h"
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class PMMemento;
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/**
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* Command that stores undo information for object changes
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*
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* Let an object create a @ref PMMemento, change the objects data, take the
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* memento and create a PMDataChangeCommand with this memento.
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*
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* Then execute the command. The object will not be changed again!
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*/
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class PMDataChangeCommand : public PMCommand
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{
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public:
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/**
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* Creates a PMDataChangeCommand for the memento
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*/
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PMDataChangeCommand( PMMemento* memento );
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/**
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* Deletes the command. The memento will be deleted.
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*/
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virtual ~PMDataChangeCommand( );
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protected:
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/**
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* Executes the command
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*/
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virtual void execute( PMCommandManager* theManager );
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/**
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* Undo the command
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*/
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virtual void undo( PMCommandManager* theManager );
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private:
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void signalChanges( PMCommandManager* theManager, PMMemento* memento );
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PMMemento* m_pNewState;
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PMMemento* m_pOldState;
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bool m_executed;
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bool m_unexecuted;
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};
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#endif
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