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/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
/*
Author: Christian Hubinger <chubinger@irrsinnig.org>, (C) 2001-2008
*/
#ifndef KMFUNDOENGINE_H
#define KMFUNDOENGINE_H
// qt includes
#include "tqdict.h"
#include "tqvaluelist.h"
#include "tqptrlist.h"
#include "tqstring.h"
#include "tqobject.h"
// project includes
#include "kmftransaction.h"
#include "netfilterobject.h"
// #include "kmfnetwork.h"
#include "kmferror.h"
namespace KMF {
class KMyFirewallInterface;
class KMFTransaction;
class KMFNetwork;
/**
@author Christian Hubinger <chubinger@irrsinnig.org>
*/
class KMFUndoEngine : public TQObject {
TQ_OBJECT
friend class KMFTransaction;
friend class KMFNetwork;
friend class KMFProtocol;
friend class KMFProtocolCategory;
friend class KMFProtocolLibrary;
//############# Beginn static stuff ##############
public:
/** return the one and only instance */
static KMFUndoEngine* instance();
private:
static KMFUndoEngine* m_instance;
//############# End static stuff ##############
protected:
uint MAX_UNDO;
public:
~KMFUndoEngine();
/** Set the numbers of undo/redo steps stored */
void setMaxUndo( uint );
/** Get the numbers of undo/redo steps stored */
uint maxUndo() {
return MAX_UNDO;
};
/** Start a transaction e.g. collection of changes that will
be tracked to allow undo/redo */
void startTransaction( NetfilterObject* /* highestAffectedObject */, const TQString& name );
/** Abort a started transaction */
void abortTransaction();
/** Hold list of available undo transaction objects */
TQValueList< KMFTransaction* >& undoTransactions();
/** Hold list of available redo transaction objects */
TQValueList< KMFTransaction* >& redoTransactions();
/** find the transaction with id in undo/redo lists */
KMFTransaction * findTransction( const TQUuid& id );
/** End a transaction e.g. collection of changes that will
be tracked to allow undo/redo */
void endTransaction();
/** Check if we are inside a transaction */
bool inTransaction();
/** store the provided id in the changes list. */
void changed( const TQUuid& id );
/** Remove all stored transacation */
void clearStacks();
/** Check if the doc is saved */
bool isSaved();
void saved();
/** Undo last transaction, return list of affected objects */
TQValueList< NetfilterObject* >& undo();
/** Redo last undo-transaction, return list of affected objects */
TQValueList< NetfilterObject* >& redo();
/** Set the ap instance */
void setKMFInterface( KMyFirewallInterface *app );
/** log message entry */
void log( const TQString&, int kmfErrorType /* = KMFError::NORMAL */, NetfilterObject* /* obj = 0 */ );
// bool preserveObjectUuid() const {
// // return m_preserveObjectUuid;
// return true;
// }
protected:
KMyFirewallInterface *m_app;
private:
// TQString m_transactionName;
bool m_in_transaction;
bool is_saved;
// bool m_preserveObjectUuid;
TQValueList< KMFTransaction* > m_undo_transactionObjects;
TQValueList< KMFTransaction* > m_redo_transactionObjects;
// TQValueList<int> m_changed_objects;
// NetfilterObject *m_highestAffectedObject;
KMFTransaction *m_currentTransaction;
private:
KMFUndoEngine();
KMFUndoEngine( TQObject*, const char* );
/** Make the loadXML in NEtfilterObject load the uuid from xml */
// void setPreserveObjectUuid( bool onOff );
signals:
void sigStackChanged();
void sigLog( const TQString& );
};
}
#endif
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