kmail

undostack.h

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00001 /*
00002     This file is part of KMail
00003 
00004     Copyright (C) 1999 Waldo Bastian (bastian@kde.org)
00005     Copyright (c) 2003 Zack Rusin <zack@kde.org>
00006 
00007     This library is free software; you can redistribute it and/or
00008     modify it under the terms of the GNU General Public License
00009     version 2 as published by the Free Software Foundation.
00010 
00011     This software is distributed in the hope that it will be useful,
00012     but WITHOUT ANY WARRANTY; without even the implied warranty of
00013     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014     General Public License for more details.
00015 
00016     You should have received a copy of the GNU General Public License
00017     along with this library; see the file COPYING. If not, write to
00018     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00019     Boston, MA 02110-1301, USA.
00020 */
00021 
00022 #ifndef UNDOSTACK_H
00023 #define UNDOSTACK_H
00024 
00025 #include <qptrlist.h>
00026 #include <qstring.h>
00027 #include <qobject.h>
00028 
00029 class KMFolder;
00030 class KMMsgBase;
00031 
00032 namespace KMail {
00033 
00035 class UndoInfo
00036 {
00037 public:
00038   int               id;
00039   QValueList<ulong> serNums;
00040   KMFolder         *srcFolder;
00041   KMFolder         *destFolder;
00042 };
00043 
00044 class UndoStack : public QObject
00045 {
00046   Q_OBJECT
00047 
00048 public:
00049   UndoStack(int size);
00050 
00051   void clear();
00052   int  size() const { return mStack.count(); }
00053   int  newUndoAction( KMFolder* srcFolder, KMFolder* destFolder );
00054   void addMsgToAction( int undoId, ulong serNum );
00055   void undo();
00056 
00057   void pushSingleAction(ulong serNum, KMFolder *folder, KMFolder* destFolder);
00058   void msgDestroyed( KMMsgBase *msg);
00059   void folderDestroyed( KMFolder *folder);
00060 protected:
00061   QPtrList<UndoInfo> mStack;
00062   int mSize;
00063   int mLastId;
00064   UndoInfo *mCachedInfo;
00065 
00066 signals:
00067    void undoStackChanged();
00068 };
00069 
00070 }
00071 
00072 #endif