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+/****************************************************************************
+**
+** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the demonstration applications of the Qt Toolkit.
+**
+** Commercial Usage
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License versions 2.0 or 3.0 as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file.  Please review the following information
+** to ensure GNU General Public Licensing requirements will be met:
+** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
+** http://www.gnu.org/copyleft/gpl.html.  In addition, as a special
+** exception, Nokia gives you certain additional rights. These rights
+** are described in the Nokia Qt GPL Exception version 1.3, included in
+** the file GPL_EXCEPTION.txt in this package.
+**
+** Qt for Windows(R) Licensees
+** As a special exception, Nokia, as the sole copyright holder for Qt
+** Designer, grants users of the Qt/Eclipse Integration plug-in the
+** right for the Qt/Eclipse Integration to link to functionality
+** provided by Qt Designer and its related libraries.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+**
+****************************************************************************/
+
+#ifndef AUTOSAVER_H
+#define AUTOSAVER_H
+
+#include <QtCore/QObject>
+#include <QtCore/QBasicTimer>
+#include <QtCore/QTime>
+
+/*
+    This class will call the save() slot on the parent object when the parent changes.
+    It will wait several seconds after changed() to combining multiple changes and
+    prevent continuous writing to disk.
+  */
+class AutoSaver : public QObject {
+
+Q_OBJECT
+
+public:
+    AutoSaver(QObject *parent);
+    ~AutoSaver();
+    void saveIfNeccessary();
+
+public slots:
+    void changeOccurred();
+
+protected:
+    void timerEvent(QTimerEvent *event);
+
+private:
+    QBasicTimer m_timer;
+    QTime m_firstChange;
+
+};
+
+#endif // AUTOSAVER_H
+