diff -r cfcbf08528c4 -r 2b40d63a9c3d qtmobility/src/sensors/qsensorbackend.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qtmobility/src/sensors/qsensorbackend.h	Fri Apr 16 15:51:22 2010 +0300
@@ -0,0 +1,86 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSENSORBACKEND_H
+#define QSENSORBACKEND_H
+
+#include "qsensor.h"
+#include "qsensormanager.h"
+
+QTM_BEGIN_NAMESPACE
+
+class Q_SENSORS_EXPORT QSensorBackend : public QObject
+{
+    Q_OBJECT
+public:
+    QSensorBackend(QSensor *sensor);
+    virtual ~QSensorBackend();
+
+    virtual void start() = 0;
+    virtual void stop() = 0;
+    virtual void poll() = 0;
+
+    void setSupportedUpdatePolicies(QSensor::UpdatePolicies policies);
+
+    template <typename T>
+    T *setReading(T *reading)
+    {
+        if (!reading)
+            reading = new T(this);
+        setReadings(reading, new T(this), new T(this));
+        return reading;
+    }
+    void newReadingAvailable();
+
+    QSensorReading *reading() const;
+
+private:
+    void setReadings(QSensorReading *device, QSensorReading *filter, QSensorReading *cache);
+
+protected:
+    QSensor *m_sensor;
+    Q_DISABLE_COPY(QSensorBackend)
+};
+
+QTM_END_NAMESPACE
+
+#endif
+