kmail/undostack.h

   1 /*
   2     This file is part of KMail
   3
   4     Copyright (C) 1999 Waldo Bastian (bastian@kde.org)
   5     Copyright (c) 2003 Zack Rusin <zack@kde.org>
   6
   7     This library is free software; you can redistribute it and/or
   8     modify it under the terms of the GNU General Public License
   9     version 2 as published by the Free Software Foundation.
  10
  11     This software is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14     General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this library; see the file COPYING. If not, write to
  18     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19     Boston, MA 02110-1301, USA.
  20 */
  21
  22 #ifndef UNDOSTACK_H
  23 #define UNDOSTACK_H
  24
  25 #include <QList>
  26 #include <QObject>
  27 #include <akonadi/collection.h>
  28 #include <akonadi/item.h>
  29 class KJob;
  30
  31 namespace KMail {
  32
  33 /** A class for storing Undo information. */
  34 class UndoInfo
  35 {
  36 public:
  37   int          id;
  38   Akonadi::Item::List items;
  39   Akonadi::Collection srcFolder;
  40   Akonadi::Collection destFolder;
  41 };
  42
  43 class UndoStack : public QObject
  44 {
  45   Q_OBJECT
  46
  47 public:
  48   UndoStack(int size);
  49   ~UndoStack();
  50
  51   void clear();
  52   int  size() const { return mStack.count(); }
  53   int  newUndoAction( const Akonadi::Collection& srcFolder, const Akonadi::Collection & destFolder );
  54   void addMsgToAction( int undoId, const Akonadi::Item &item );
  55   void undo();
  56
  57   void pushSingleAction(const Akonadi::Item &item, const Akonadi::Collection&, const Akonadi::Collection& destFolder);
  58   void folderDestroyed( const Akonadi::Collection &folder);
  59
  60 public slots:
  61   void msgDestroyed( const Akonadi::Item &msg);
  62
  63 protected slots:
  64   void slotMoveResult(KJob*);
  65
  66 protected:
  67   QList<UndoInfo*> mStack;
  68   int mSize;
  69   int mLastId;
  70   UndoInfo *mCachedInfo;
  71
  72 signals:
  73    void undoStackChanged();
  74 };
  75
  76 }
  77
  78 #endif