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diff --git a/lang/qt/src/job.h b/lang/qt/src/job.h
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+/*
+    job.h
+
+    This file is part of qgpgme, the Qt API binding for gpgme
+    Copyright (c) 2004 Klarälvdalens Datakonsult AB
+    Copyright (c) 2016 Intevation GmbH
+
+    QGpgME 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.
+
+    QGpgME 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_JOB_H__
+#define __KLEO_JOB_H__
+
+#include "qgpgme_export.h"
+
+#include <QObject>
+#include <QString>
+
+#ifdef BUILDING_QGPGME
+# include "error.h"
+#else
+# include <gpgme++/error.h>
+#endif
+
+class QWidget;
+
+namespace QGpgME
+{
+
+/**
+   @short An abstract base class for asynchronous crypto operations
+
+   During the operation, you might receive progress updates through
+   the progress() signal as they arrive, but an implementation is
+   free to not send progress information. You should show a busy
+   progressbar until the first progress() signal is received.
+
+   The done() signal is emitted _before_ the result() signals of
+   subclasses and should be used to hide and/or reset progress bars,
+   not to learn of the end of the operation. Use the result()
+   signals for that.
+
+   To cancel the operation, simply call slotCancel(). The result()
+   signal of subclasses will still be emitted, though, and will
+   carry the information that the operation was canceled.
+*/
+class QGPGME_EXPORT Job : public QObject
+{
+    Q_OBJECT
+protected:
+    explicit Job(QObject *parent);
+public:
+    ~Job();
+
+    virtual QString auditLogAsHtml() const;
+    virtual GpgME::Error auditLogError() const;
+    bool isAuditLogSupported() const;
+
+public Q_SLOTS:
+    virtual void slotCancel() = 0;
+
+Q_SIGNALS:
+    void progress(const QString &what, int current, int total);
+    void done();
+};
+
+}
+
+#endif // __KLEO_JOB_H__