changerecorder_p.h

/*
    Copyright (c) 2007 Volker Krause <vkrause@kde.org>

    This library is free software; you can redistribute it and/or modify it
    under the terms of the GNU Library General Public License as published by
    the Free Software Foundation; either version 2 of the License, or (at your
    option) any later version.

    This library 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 Library General Public
    License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to the
    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
    02110-1301, USA.
*/

#ifndef AKONADI_CHANGERECORDER_P_H
#define AKONADI_CHANGERECORDER_P_H

#include "akonadiprivate_export.h"
#include "changerecorder.h"
#include "monitor_p.h"

namespace Akonadi {

class ChangeRecorder;
class ChangeNotificationDependenciesFactory;

class AKONADI_TESTS_EXPORT ChangeRecorderPrivate : public Akonadi::MonitorPrivate
{
  public:
    ChangeRecorderPrivate( ChangeNotificationDependenciesFactory *dependenciesFactory_, ChangeRecorder* parent );

    Q_DECLARE_PUBLIC( ChangeRecorder )
    QSettings *settings;
    bool enableChangeRecording;

    virtual int pipelineSize() const;
    virtual void notificationsEnqueued( int count );
    virtual void notificationsErased();

    virtual void slotNotify( const NotificationMessageV2::List &msgs );
    virtual bool emitNotification(const Akonadi::NotificationMessageV2& msg);

    QString notificationsFileName() const;

    void loadNotifications();
    QQueue<NotificationMessageV2> loadFrom( QIODevice *device );
    QString dumpNotificationListToString() const;
    void addToStream( QDataStream &stream, const NotificationMessageV2 &msg );
    void saveNotifications();
    void saveTo( QIODevice *device );
private:
    void dequeueNotification();
    void notificationsLoaded();
    void writeStartOffset();

    int m_lastKnownNotificationsCount; // just for invariant checking
    int m_startOffset; // number of saved notifications to skip
    bool m_needFullSave;
};

} // namespace Akonadi

#endif