job.h

/*
    Copyright (c) 2006 Tobias Koenig <tokoe@kde.org>
                  2006 Marc Mutz <mutz@kde.org>
                  2006 - 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_JOB_H
#define AKONADI_JOB_H

#include "akonadi_export.h"

#include <kcompositejob.h>

class QString;

namespace Akonadi {

class JobPrivate;
class Session;
class SessionPrivate;

class AKONADI_EXPORT Job : public KCompositeJob
{
  Q_OBJECT

  friend class Session;
  friend class SessionPrivate;

  public:
    typedef QList<Job*> List;

    enum Error
    {
      ConnectionFailed = UserDefinedError, 
      ProtocolVersionMismatch,             
      UserCanceled,                        
      Unknown,                             
      UserError = UserDefinedError + 42    
    };

    explicit Job( QObject *parent = 0 );

    virtual ~Job();

    void start();

    virtual QString errorString() const;

  Q_SIGNALS:
    void aboutToStart( Akonadi::Job *job );

    void writeFinished( Akonadi::Job *job );

  protected:
    virtual void doStart() = 0;

    virtual void doHandleResponse( const QByteArray &tag, const QByteArray &data );

    virtual bool addSubjob( KJob* job );

    virtual bool removeSubjob( KJob* job );

    virtual bool doKill();

    void emitWriteFinished();

  protected Q_SLOTS:
    virtual void slotResult( KJob* job );

  protected:
    //@cond PRIVATE
    Job( JobPrivate *dd, QObject *parent );
    JobPrivate* const d_ptr;
    //@endcond

  private:
    Q_DECLARE_PRIVATE( Job )

    //@cond PRIVATE
    Q_PRIVATE_SLOT( d_func(), void slotSubJobAboutToStart( Akonadi::Job* ) )
    Q_PRIVATE_SLOT( d_func(), void startNext() )
    Q_PRIVATE_SLOT( d_func(), void signalCreationToJobTracker() )
    Q_PRIVATE_SLOT( d_func(), void delayedEmitResult() )
    //@endcond
};

}

#endif