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 <AkonadiCore/collection.h>
  28 #include <AkonadiCore/item.h>
  29 class KJob;
  30
  31 namespace KMail
  32 {
  33
  34 /** A class for storing Undo information. */
  35 class UndoInfo
  36 {
  37 public:
  38     UndoInfo()
  39         : id(-1),
  40           moveToTrash(false)
  41     {
  42     }
  43
  44     int id;
  45     Akonadi::Item::List items;
  46     Akonadi::Collection srcFolder;
  47     Akonadi::Collection destFolder;
  48     bool moveToTrash;
  49 };
  50
  51 class UndoStack : public QObject
  52 {
  53     Q_OBJECT
  54
  55 public:
  56     explicit UndoStack(int size);
  57     ~UndoStack();
  58
  59     void clear();
  60     int  size() const;
  61     int  newUndoAction(const Akonadi::Collection &srcFolder, const Akonadi::Collection &destFolder);
  62     void addMsgToAction(int undoId, const Akonadi::Item &item);
  63     bool isEmpty() const;
  64     void undo();
  65
  66     void pushSingleAction(const Akonadi::Item &item, const Akonadi::Collection &, const Akonadi::Collection &destFolder);
  67     void folderDestroyed(const Akonadi::Collection &folder);
  68
  69     QString undoInfo() const;
  70
  71 protected Q_SLOTS:
  72     void slotMoveResult(KJob *);
  73
  74 protected:
  75     QList<UndoInfo *> mStack;
  76     int mSize;
  77     int mLastId;
  78     UndoInfo *mCachedInfo;
  79
  80 Q_SIGNALS:
  81     void undoStackChanged();
  82 };
  83
  84 }
  85
  86 #endif