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diff --git a/src/gui/general/EditViewTimeSigNotifier.h b/src/gui/general/EditViewTimeSigNotifier.h
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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_EDITVIEWTIMESIGNOTIFIER_H_
+#define _RG_EDITVIEWTIMESIGNOTIFIER_H_
+
+namespace Rosegarden {
+        
+class EditViewTimeSigNotifier : public Rosegarden::CompositionObserver
+{
+public:
+    EditViewTimeSigNotifier(RosegardenGUIDoc *doc) :
+        m_composition(&doc->getComposition()),
+        m_timeSigChanged(false) {
+        m_composition->addObserver(this);
+    }
+    virtual ~EditViewTimeSigNotifier() {
+        if (!isCompositionDeleted()) m_composition->removeObserver(this);
+    }
+    virtual void timeSignatureChanged(const Rosegarden::Composition *c) {
+        if (c == m_composition) m_timeSigChanged = true;
+    }
+
+    bool hasTimeSigChanged() const { return m_timeSigChanged; }
+    void reset() { m_timeSigChanged = false; }
+
+protected:
+    Rosegarden::Composition *m_composition;
+    bool m_timeSigChanged;
+};
+
+}
+
+#endif /*EDITVIEWTIMESIGNOTIFIER_H_*/