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+/*
+ decryptjob.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_DECRYPTJOB_H__
+#define __KLEO_DECRYPTJOB_H__
+
+#include "job.h"
+
+#include <qcstring.h>
+
+namespace GpgME {
+ class Error;
+ class Key;
+ class DecryptionResult;
+}
+
+
+namespace Kleo {
+
+ /**
+ @short An abstract base class for asynchronous decrypters
+
+ To use a DecryptJob, first obtain an instance from the
+ CryptoBackend implementation, connect the progress() and result()
+ signals to suitable slots and then start the decryption with a
+ call to start(). This call might fail, in which case the
+ DecryptJob instance will have scheduled it's own destruction with
+ a call to QObject::deleteLater().
+
+ After result() is emitted, the DecryptJob will schedule it's own
+ destruction by calling QObject::deleteLater().
+ */
+ class DecryptJob : public Job {
+ Q_OBJECT
+ protected:
+ DecryptJob( QObject * parent, const char * name );
+ public:
+ ~DecryptJob();
+
+ /**
+ Starts the decryption operation. \a cipherText is the data to
+ decrypt.
+ */
+ virtual GpgME::Error start( const QByteArray & cipherText ) = 0;
+
+ virtual GpgME::DecryptionResult exec( const QByteArray & cipherText,
+ QByteArray & plainText ) = 0;
+
+ signals:
+ void result( const GpgME::DecryptionResult & result, const QByteArray & plainText );
+ };
+
+}
+
+#endif // __KLEO_DECRYPTJOB_H__