libkdepim/configmanager.h

   1 /*  -*- c++ -*-
   2     configmanager.h
   3
   4     KMail, the KDE mail client.
   5     Copyright (c) 2002 the KMail authors.
   6     See file AUTHORS for details
   7
   8     This program is free software; you can redistribute it and/or
   9     modify it under the terms of the GNU General Public License,
  10     version 2.0, as published by the Free Software Foundation.
  11     You should have received a copy of the GNU General Public License
  12     along with this program; if not, write to the Free Software Foundation,
  13     Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, US
  14 */
  15
  16
  17 #ifndef _KMAIL_CONFIGMANAGER_H_
  18 #define _KMAIL_CONFIGMANAGER_H_
  19
  20 #include <qobject.h>
  21
  22 class KMKernel;
  23
  24 namespace KPIM {
  25
  26 /**
  27  * @short Class for managing a set of config options.
  28  * @author Marc Mutz <mutz@kde.org>
  29  **/
  30 class ConfigManager : public QObject {
  31   Q_OBJECT
  32 public:
  33   /** Commit changes to disk and emit changed() if necessary. */
  34   virtual void commit() = 0;
  35   /** Re-read the config from disk and forget changes. */
  36   virtual void rollback() = 0;
  37
  38   /** Check whether there are any unsaved changes. */
  39   virtual bool hasPendingChanges() const = 0;
  40
  41 signals:
  42   /** Emitted whenever a commit changes any configure option */
  43   void changed();
  44
  45 protected:
  46   ConfigManager( QObject * parent=0, const char * name=0 );
  47   virtual ~ConfigManager();
  48 };
  49
  50 }
  51
  52 #endif // _KMAIL_CONFIGMANAGER_H_