undostack.h

/*
    This file is part of KMail
 
    Copyright (C) 1999 Waldo Bastian (bastian@kde.org)
    Copyright (c) 2003 Zack Rusin <zack@kde.org>
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
    version 2 as published by the Free Software Foundation.
 
    This software is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with this library; see the file COPYING. If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
*/
 
#ifndef UNDOSTACK_H
#define UNDOSTACK_H
 
#include <tqptrlist.h>
#include <tqstring.h>
#include <tqobject.h>
 
class KMFolder;
class KMMsgBase;
 
namespace KMail {
 
class UndoInfo
{
public:
  int               id;
  TQValueList<ulong> serNums;
  KMFolder         *srcFolder;
  KMFolder         *destFolder;
};
 
class UndoStack : public TQObject
{
  TQ_OBJECT
  
 
public:
  UndoStack(int size);
 
  void clear();
  int  size() const { return mStack.count(); }
  int  newUndoAction( KMFolder* srcFolder, KMFolder* destFolder );
  void addMsgToAction( int undoId, ulong serNum );
  void undo();
 
  void pushSingleAction(ulong serNum, KMFolder *folder, KMFolder* destFolder);
  void msgDestroyed( KMMsgBase *msg);
  void folderDestroyed( KMFolder *folder);
protected:
  TQPtrList<UndoInfo> mStack;
  int mSize;
  int mLastId;
  UndoInfo *mCachedInfo;
 
signals:
   void undoStackChanged();
};
 
}
 
#endif