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diff --git a/src/plugins/sensors/blackberry/bbguihelper.cpp b/src/plugins/sensors/blackberry/bbguihelper.cpp
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+++ b/src/plugins/sensors/blackberry/bbguihelper.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2012 Research In Motion
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtSensors module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 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 the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include "bbguihelper.h"
+
+#include <QtCore/QAbstractEventDispatcher>
+#include <QtCore/QCoreApplication>
+#include <bps/navigator.h>
+
+BbGuiHelper::BbGuiHelper(QObject *parent)
+    : QObject(parent),
+      m_currentOrientation(0),
+      m_applicationActive(true)
+{
+    // There is no API to get the current orientation or application active state at the moment.
+    // Therefore, we assume the application is active when this is called, and that the inital
+    // orientation that is set in the environment variable hasn't changed yet.
+    // These assumptions don't always hold, but it is the best we got so far.
+    // The navigator will at least inform us about updates.
+    const QByteArray orientationText = qgetenv("ORIENTATION");
+    if (!orientationText.isEmpty())
+        m_currentOrientation = orientationText.toInt();
+
+    QCoreApplication::eventDispatcher()->installNativeEventFilter(this);
+}
+
+BbGuiHelper::~BbGuiHelper()
+{
+    QCoreApplication::eventDispatcher()->removeNativeEventFilter(this);
+}
+
+int BbGuiHelper::currentOrientation() const
+{
+    return m_currentOrientation;
+}
+
+bool BbGuiHelper::applicationActive() const
+{
+    return m_applicationActive;
+}
+
+bool BbGuiHelper::nativeEventFilter(const QByteArray &eventType, void *message, long *result)
+{
+    Q_UNUSED(result);
+    Q_UNUSED(eventType);
+
+    bps_event_t * const event = static_cast<bps_event_t *>(message);
+    if (event && bps_event_get_domain(event) == navigator_get_domain()) {
+        const int code = bps_event_get_code(event);
+        if (code == NAVIGATOR_ORIENTATION) {
+            const int newOrientation = navigator_event_get_orientation_angle(event);
+            if (newOrientation != m_currentOrientation) {
+                m_currentOrientation = newOrientation;
+                emit orientationChanged();
+            }
+        } else if (code == NAVIGATOR_WINDOW_STATE) {
+            const bool appActive =
+                    (navigator_event_get_window_state(event) == NAVIGATOR_WINDOW_FULLSCREEN);
+            if (m_applicationActive != appActive) {
+                m_applicationActive = appActive;
+                emit applicationActiveChanged();
+            }
+        }
+    }
+
+    return false;
+}