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+
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Rosegarden
+    A MIDI and audio sequencer and musical notation editor.
+
+    This program is Copyright 2000-2008
+        Guillaume Laurent   <[email protected]>,
+        Chris Cannam        <[email protected]>,
+        Richard Bown        <[email protected]>
+
+    The moral rights of Guillaume Laurent, Chris Cannam, and Richard
+    Bown to claim authorship of this work have been asserted.
+
+    Other copyrights also apply to some parts of this work.  Please
+    see the AUTHORS file and individual file headers for details.
+
+    This program 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.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#ifndef _RG_PROGRESSREPORTER_H_
+#define _RG_PROGRESSREPORTER_H_
+
+#include <qobject.h>
+
+
+
+
+namespace Rosegarden
+{
+
+
+
+class ProgressReporter : public QObject
+{
+    Q_OBJECT
+public:
+    ProgressReporter(QObject* parent, const char* name = 0);
+
+    // exception class for cancellations
+    class Cancelled { };
+
+protected:
+    /**
+     * Call this at appropriate times if you know Qt isn't in the stack
+     */
+    void throwIfCancelled();
+
+    /*
+      We have to use these accessors rather than throwing directly
+      from slotCancel() because Qt is generally compiled without
+      exception support, so we can't throw from a slot.
+    */
+    bool isOperationCancelled() const { return m_isCancelled; }
+//     void resetOperationCancelledState() { m_isCancelled = false; }
+
+protected slots:
+     virtual void slotCancel();
+
+signals:
+    /// Report progress
+    void setProgress(int);
+    void incrementProgress(int);
+    void setOperationName(QString);
+
+protected:
+    //--------------- Data members ---------------------------------
+    bool m_isCancelled;
+};
+
+
+
+}
+
+#endif