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/*
downloadjob.h
This file is part of libkleopatra, the KDE keymanagement library
Copyright (c) 2004 Klarälvdalens Datakonsult AB
Libkleopatra is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
Libkleopatra 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
In addition, as a special exception, the copyright holders give
permission to link the code of this program with any edition of
the Qt library by Trolltech AS, Norway (or with modified versions
of Qt that use the same license as Qt), and distribute linked
combinations including the two. You must obey the GNU General
Public License in all respects for all of the code used other than
Qt. If you modify this file, you may extend this exception to
your version of the file, but you are not obligated to do so. If
you do not wish to do so, delete this exception statement from
your version.
*/
#ifndef __KLEO_DOWNLOADJOB_H__
#define __KLEO_DOWNLOADJOB_H__
#include "job.h"
#include <qcstring.h>
namespace GpgME {
class Error;
}
class QStringList;
namespace Kleo {
/**
@short An abstract base class for asynchronous downloaders
To use a DownloadJob, first obtain an instance from the
CryptoBackend implementation, connect the progress() and result()
signals to suitable slots and then start the download with a call
to start(). This call might fail, in which case the DownloadJob
instance will have scheduled it's own destruction with a call to
QObject::deleteLater().
After result() is emitted, the DownloadJob will schedule it's own
destruction by calling QObject::deleteLater().
*/
class DownloadJob : public Job {
Q_OBJECT
protected:
DownloadJob( QObject * parent, const char * name );
public:
~DownloadJob();
/**
Starts the download operation. \a fingerprints is a list of
fingerprints used to specify the list of keys downloaded. Empty
patterns are ignored. If \a fingerprints is empty, contains
only empty strings or anything other than fingerprints, the
result is undefined.
*/
virtual GpgME::Error start( const QStringList & fingerprints ) = 0;
signals:
void result( const GpgME::Error & result, const QByteArray & keyData );
};
}
#endif // __KLEO_DOWNLOADJOB_H__
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