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+/*
+ job.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_JOB_H__
+#define __KLEO_JOB_H__
+
+#include <qobject.h>
+#include <qstring.h>
+
+class QWidget;
+
+namespace Kleo {
+
+ /**
+ @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 Job : public QObject {
+ Q_OBJECT
+ protected:
+ Job( QObject * parent, const char * name );
+ public:
+ ~Job();
+
+ virtual void showErrorDialog( QWidget * parent=0, const QString & caption=QString::null ) const;
+
+ virtual QString auditLogAsHtml() const;
+
+ public slots:
+ virtual void slotCancel() = 0;
+
+ signals:
+ void progress( const QString & what, int current, int total );
+ void done();
+ };
+
+}
+
+#endif // __KLEO_JOB_H__