/*
    Copyright (c) 2011 Tobias Koenig <tokoe@kde.org>
    Copyright (c) 2011 Stephen Kelly <steveire@gmail.com>

    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_CHANGEMEDIATOR_P_H
#define AKONADI_CHANGEMEDIATOR_P_H

#include <QtCore/QList>
#include <QtCore/QObject>
#include <QtCore/QSet>

#include "notificationmessage_p.h"
#include "objectnotificationmessage.h"

namespace Akonadi
{

class Job;
class JobPrivate;

class Collection;
class Item;

class ChangeMediator : public QObject
{
  Q_OBJECT
public:
  explicit ChangeMediator(QObject* parent = 0);

  static ChangeMediator* instance();

  static void registerMonitor( QObject *monitor );
  static void unregisterMonitor( QObject *monitor );

  static void invalidateCollection( const Akonadi::Collection &collection );
  static void invalidateItem( const Akonadi::Item &item );

  static void registerSession( const QByteArray &id );
  static void unregisterSession( const QByteArray &id );
  static void beginMoveItems( JobPrivate *movePrivate, const QByteArray &id );
  static void itemsMoved(const Item::List &items, const Collection &sourceParent, const QByteArray &id );

Q_SIGNALS:
  void notify(const QVector<Akonadi::ObjectNotificationMessage> &messages);

private Q_SLOTS:
  void init();

  void do_registerMonitor( QObject *monitor );
  void do_unregisterMonitor( QObject *monitor );

  void do_invalidateCollection( const Akonadi::Collection &collection );
  void do_invalidateItem( const Akonadi::Item &item );

  void processAkonadiNotifications(const Akonadi::NotificationMessage::List &messages);

  void do_registerSession( const QByteArray &id );
  void do_unregisterSession( const QByteArray &id );
  void do_beginMoveItems( JobPrivate *movePrivate, const QByteArray &id );
  void do_itemsMoved(const Item::List &items, const Collection &sourceParent, const QByteArray &id);

private:
  QList<QObject*> m_monitors;

  QObject *m_notificationSource;
  QVector<Akonadi::ObjectNotificationMessage> messageQueue;
  QVector<Akonadi::Job*> unfilteredJobs;

  QSet<QByteArray> m_sessions;
};

}

#endif
