csapi-sensor: change sensor classes to sealed class to prevent inheritance

Change-Id: I8d19abad0c4629a8958fafd2daac1b02d61eca35
Signed-off-by: kibak.yoon <kibak.yoon@samsung.com>

29 files changed, 82 insertions, 82 deletions

diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/Accelerometer.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/Accelerometer.cs
index 7e5c23f..7fc6c3f 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/Accelerometer.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/Accelerometer.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// Accelerometer Sensor Class. Used for registering callbacks for accelerometer and getting accelerometer data
     /// </summary>
-    public class Accelerometer : Sensor
+    public sealed class Accelerometer : Sensor
     {
         private static string AccelerometerKey = "http://tizen.org/feature/sensor.accelerometer";
         /// <summary>
@@ -95,7 +95,7 @@ namespace Tizen.Sensor
             return count;
         }
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -105,7 +105,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/ActivityDetector.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/ActivityDetector.cs
index 6dcb0ce..546eb8f 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/ActivityDetector.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/ActivityDetector.cs
@@ -29,13 +29,13 @@ namespace Tizen.Sensor
         /// </summary>
         public SensorDataAccuracy ActivityAccuracy { get; protected set; }
 
-        protected abstract void SensorEventCallback(IntPtr sensorHandle, IntPtr sensorPtr, IntPtr data);
+        protected internal abstract void SensorEventCallback(IntPtr sensorHandle, IntPtr sensorPtr, IntPtr data);
 
         internal ActivityDetector(uint index) : base(index)
         {
         }
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -45,7 +45,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/FaceDownGestureDetector.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/FaceDownGestureDetector.cs
index 4bfc32e..17b7c32 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/FaceDownGestureDetector.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/FaceDownGestureDetector.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// FaceDownGestureDetector Class. Used for registering callbacks for face down gesture detector and getting the face down state
     /// </summary>
-    public class FaceDownGestureDetector : Sensor
+    public sealed class FaceDownGestureDetector : Sensor
     {
         private static string GestureDetectorKey = "http://tizen.org/feature/sensor.gesture_recognition";
 
@@ -85,7 +85,7 @@ namespace Tizen.Sensor
         /// </summary>
         public event EventHandler<FaceDownGestureDetectorDataUpdatedEventArgs> DataUpdated;
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -95,7 +95,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/GravitySensor.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/GravitySensor.cs
index e7812c5..b081544 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/GravitySensor.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/GravitySensor.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// GravitySensor Class. Used for registering callbacks for gravity sensor and getting gravity data
     /// </summary>
-    public class GravitySensor : Sensor
+    public sealed class GravitySensor : Sensor
     {
         private const string GravitySensorKey = "http://tizen.org/feature/sensor.gravity";
 
@@ -120,7 +120,7 @@ namespace Tizen.Sensor
             return count;
         }
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -130,7 +130,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/Gyroscope.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/Gyroscope.cs
index 9d29073..50a8055 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/Gyroscope.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/Gyroscope.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// Gyroscope Sensor Class. Used for registering callbacks for gyroscope and getting gyroscope data
     /// </summary>
-    public class Gyroscope : Sensor
+    public sealed class Gyroscope : Sensor
     {
         private const string GyroscopeKey = "http://tizen.org/feature/sensor.gyroscope";
 
@@ -96,7 +96,7 @@ namespace Tizen.Sensor
             return count;
         }
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -106,7 +106,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/GyroscopeRotationVectorSensor.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/GyroscopeRotationVectorSensor.cs
index 5d948e1..d4a7918 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/GyroscopeRotationVectorSensor.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/GyroscopeRotationVectorSensor.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// GyroscopeRotationVectorSensor Class. Used for registering callbacks for gyroscope rotation vector sensor and getting gyroscope rotation vector data
     /// </summary>
-    public class GyroscopeRotationVectorSensor : Sensor
+    public sealed class GyroscopeRotationVectorSensor : Sensor
     {
         private const string GyroscopeRVKey = "http://tizen.org/feature/sensor.gyroscope_rotation_vector";
 
@@ -106,7 +106,7 @@ namespace Tizen.Sensor
             return count;
         }
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -116,7 +116,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/HeartRateMonitor.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/HeartRateMonitor.cs
index 3ec478d..7c98cc6 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/HeartRateMonitor.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/HeartRateMonitor.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// HeartRateMonitor Class. Used for registering callbacks for heart rate monitor and getting heart rate data
     /// /// </summary>
-    public class HeartRateMonitor : Sensor
+    public sealed class HeartRateMonitor : Sensor
     {
         private const string HRMKey = "http://tizen.org/feature/sensor.heart_rate_monitor";
 
@@ -90,7 +90,7 @@ namespace Tizen.Sensor
             return count;
         }
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -100,7 +100,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/HumiditySensor.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/HumiditySensor.cs
index 28e6fbc..f44fbd7 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/HumiditySensor.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/HumiditySensor.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// HumiditySensor Class. Used for registering callbacks for humidity sensor and getting humidity data
     /// /// </summary>
-    public class HumiditySensor : Sensor
+    public sealed class HumiditySensor : Sensor
     {
         private const string HumiditySensorKey = "http://tizen.org/feature/sensor.humidity";
 
@@ -86,7 +86,7 @@ namespace Tizen.Sensor
             return count;
         }
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -96,7 +96,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/InVehicleActivityDetector.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/InVehicleActivityDetector.cs
index 035b0c3..52bf473 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/InVehicleActivityDetector.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/InVehicleActivityDetector.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// InVehicleActivityDetector Class. Used for registering callbacks for in vehicle activity detector and getting the in vehicle state
     /// </summary>
-    public class InVehicleActivityDetector : ActivityDetector
+    public sealed class InVehicleActivityDetector : ActivityDetector
     {
         private const string ActivityDetectorKey = "http://tizen.org/feature/sensor.activity_recognition";
 
@@ -81,7 +81,7 @@ namespace Tizen.Sensor
         /// </summary>
         public event EventHandler<InVehicleActivityDetectorDataUpdatedEventArgs> DataUpdated;
 
-        protected override void SensorEventCallback(IntPtr sensorHandle, IntPtr sensorPtr, IntPtr data)
+        protected internal override void SensorEventCallback(IntPtr sensorHandle, IntPtr sensorPtr, IntPtr data)
         {
             Interop.SensorEventStruct sensorData = Interop.IntPtrToEventStruct(sensorPtr);
             TimeSpan = new TimeSpan((Int64)sensorData.timestamp);
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/LightSensor.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/LightSensor.cs
index 485ffa5..50ec06c 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/LightSensor.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/LightSensor.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// LightSensor Class. Used for registering callbacks for light sensor and getting light data
     /// /// </summary>
-    public class LightSensor : Sensor
+    public sealed class LightSensor : Sensor
     {
         private const string LightSensorKey = "http://tizen.org/feature/sensor.photometer";
 
@@ -86,7 +86,7 @@ namespace Tizen.Sensor
             return count;
         }
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -96,7 +96,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/LinearAccelerationSensor.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/LinearAccelerationSensor.cs
index 43a42ee..5850f75 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/LinearAccelerationSensor.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/LinearAccelerationSensor.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// LinearAccelerationSensor Class. Used for registering callbacks for linear acceleration sensor and getting linear acceleration data
     /// /// </summary>
-    public class LinearAccelerationSensor : Sensor
+    public sealed class LinearAccelerationSensor : Sensor
     {
         private const string LinearAccelerationSensorKey = "http://tizen.org/feature/sensor.linear_acceleration";
 
@@ -120,7 +120,7 @@ namespace Tizen.Sensor
             return count;
         }
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -130,7 +130,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/Magnetometer.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/Magnetometer.cs
index fffb672..2da9052 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/Magnetometer.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/Magnetometer.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// Magnetometer Class. Used for registering callbacks for magnetometer and getting magnetometer data
     /// /// </summary>
-    public class Magnetometer : Sensor
+    public sealed class Magnetometer : Sensor
     {
         private static string MagnetometerKey = "http://tizen.org/feature/sensor.magnetometer";
 
@@ -120,7 +120,7 @@ namespace Tizen.Sensor
             return count;
         }
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -130,7 +130,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/MagnetometerRotationVectorSensor.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/MagnetometerRotationVectorSensor.cs
index 948407e..bdbcc5c 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/MagnetometerRotationVectorSensor.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/MagnetometerRotationVectorSensor.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// MagnetometerRotationVectorSensor Class. Used for registering callbacks for magnetometer rotation vector sensor and getting magnetometer rotation vector data
     /// /// </summary>
-    public class MagnetometerRotationVectorSensor : Sensor
+    public sealed class MagnetometerRotationVectorSensor : Sensor
     {
         private static string MagnetometerRVKey = "http://tizen.org/feature/sensor.geomagnetic_rotation_vector";
 
@@ -142,7 +142,7 @@ namespace Tizen.Sensor
             return count;
         }
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -152,7 +152,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/OrientationSensor.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/OrientationSensor.cs
index fab0a0e..ef9fbf1 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/OrientationSensor.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/OrientationSensor.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// OrientationSensor Class. Used for registering callbacks for orientation sensor and getting orientation data
     /// /// </summary>
-    public class OrientationSensor : Sensor
+    public sealed class OrientationSensor : Sensor
     {
         private static string OrientationSensorKey = "http://tizen.org/feature/sensor.tiltmeter";
 
@@ -120,7 +120,7 @@ namespace Tizen.Sensor
             return count;
         }
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -130,7 +130,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/Pedometer.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/Pedometer.cs
index 911ec16..5b1f3d0 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/Pedometer.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/Pedometer.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// Pedometer Sensor Class. Used for registering callbacks for pedometer and getting pedometer data
     /// /// </summary>
-    public class Pedometer : Sensor
+    public sealed class Pedometer : Sensor
     {
         private static string PedometerKey = "http://tizen.org/feature/sensor.pedometer";
 
@@ -125,7 +125,7 @@ namespace Tizen.Sensor
             return count;
         }
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -135,7 +135,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/PickUpGestureDetector.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/PickUpGestureDetector.cs
index c140ebb..37aab50 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/PickUpGestureDetector.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/PickUpGestureDetector.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// PickUpGestureDetector Class. Used for registering callbacks for pick up activity detector and getting the pick up state
     /// </summary>
-    public class PickUpGestureDetector : Sensor
+    public sealed class PickUpGestureDetector : Sensor
     {
         private static string GestureDetectorKey = "http://tizen.org/feature/sensor.gesture_recognition";
 
@@ -97,7 +97,7 @@ namespace Tizen.Sensor
         /// </summary>
         public event EventHandler<PickUpGestureDetectorDataUpdatedEventArgs> DataUpdated;
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -107,7 +107,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/PressureSensor.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/PressureSensor.cs
index c23bc05..d666bf6 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/PressureSensor.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/PressureSensor.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// PressureSensor Class. Used for registering callbacks for pressure sensor and getting pressure data
     /// /// </summary>
-    public class PressureSensor : Sensor
+    public sealed class PressureSensor : Sensor
     {
         private static string PressureSensorKey = "http://tizen.org/feature/sensor.barometer";
 
@@ -87,7 +87,7 @@ namespace Tizen.Sensor
             return count;
         }
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -97,7 +97,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/ProximitySensor.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/ProximitySensor.cs
index d793ff1..32fdabc 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/ProximitySensor.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/ProximitySensor.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// ProximitySensor Class. Used for registering callbacks for proximity sensor and getting proximity data
     /// /// </summary>
-    public class ProximitySensor : Sensor
+    public sealed class ProximitySensor : Sensor
     {
         private static string ProximitySensorKey = "http://tizen.org/feature/sensor.proximity";
 
@@ -86,7 +86,7 @@ namespace Tizen.Sensor
             return count;
         }
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -96,7 +96,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/RotationVectorSensor.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/RotationVectorSensor.cs
index 43942e1..9fe46f3 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/RotationVectorSensor.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/RotationVectorSensor.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// RotationVectorSensor Class. Used for registering callbacks for rotation vector sensor and getting rotation vector data
     /// /// </summary>
-    public class RotationVectorSensor : Sensor
+    public sealed class RotationVectorSensor : Sensor
     {
         private static string RotationVectorKey = "http://tizen.org/feature/sensor.rotation_vector";
 
@@ -130,7 +130,7 @@ namespace Tizen.Sensor
             return count;
         }
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -140,7 +140,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/RunningActivityDetector.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/RunningActivityDetector.cs
index f1c0990..28ee4a1 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/RunningActivityDetector.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/RunningActivityDetector.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// RunningActivityDetector Class. Used for registering callbacks for running activity detector and getting the running state
     /// </summary>
-    public class RunningActivityDetector : ActivityDetector
+    public sealed class RunningActivityDetector : ActivityDetector
     {
         private static string ActivityDetectorKey = "http://tizen.org/feature/sensor.activity_recognition";
 
@@ -81,7 +81,7 @@ namespace Tizen.Sensor
         /// </summary>
         public event EventHandler<RunningActivityDetectorDataUpdatedEventArgs> DataUpdated;
 
-        protected override void SensorEventCallback(IntPtr sensorHandle, IntPtr sensorPtr, IntPtr data)
+        protected internal override void SensorEventCallback(IntPtr sensorHandle, IntPtr sensorPtr, IntPtr data)
         {
             Interop.SensorEventStruct sensorData = Interop.IntPtrToEventStruct(sensorPtr);
             TimeSpan = new TimeSpan((Int64)sensorData.timestamp);
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/SleepMonitor.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/SleepMonitor.cs
index dfd3ffa..0eaab30 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/SleepMonitor.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/SleepMonitor.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// SleepMonitor Class. Used for registering callbacks for sleep monitor and getting sleep data
     /// /// </summary>
-    public class SleepMonitor : Sensor
+    public sealed class SleepMonitor : Sensor
     {
         private static string SleepMonitorKey = "http://tizen.org/feature/sensor.sleep_monitor";
 
@@ -91,7 +91,7 @@ namespace Tizen.Sensor
             return count;
         }
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -101,7 +101,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/StationaryActivityDetector.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/StationaryActivityDetector.cs
index 39504bb..b31661d 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/StationaryActivityDetector.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/StationaryActivityDetector.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// StationaryActivityDetector Class. Used for registering callbacks for stationary activity detector and getting the stationary state
     /// </summary>
-    public class StationaryActivityDetector : ActivityDetector
+    public sealed class StationaryActivityDetector : ActivityDetector
     {
         private static string ActivityDetectorKey = "http://tizen.org/feature/sensor.activity_recognition";
 
@@ -81,7 +81,7 @@ namespace Tizen.Sensor
         /// </summary>
         public event EventHandler<StationaryActivityDetectorDataUpdatedEventArgs> DataUpdated;
 
-        protected override void SensorEventCallback(IntPtr sensorHandle, IntPtr sensorPtr, IntPtr data)
+        protected internal override void SensorEventCallback(IntPtr sensorHandle, IntPtr sensorPtr, IntPtr data)
         {
             Interop.SensorEventStruct sensorData = Interop.IntPtrToEventStruct(sensorPtr);
             TimeSpan = new TimeSpan((Int64)sensorData.timestamp);
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/TemperatureSensor.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/TemperatureSensor.cs
index 68a7ebd..85c0c25 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/TemperatureSensor.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/TemperatureSensor.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// TemperatureSensor Class. Used for registering callbacks for temperature sensor and getting temperature data
     /// /// </summary>
-    public class TemperatureSensor : Sensor
+    public sealed class TemperatureSensor : Sensor
     {
         private static string TemperatureSensorKey = "http://tizen.org/feature/sensor.temperature";
 
@@ -87,7 +87,7 @@ namespace Tizen.Sensor
             return count;
         }
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -97,7 +97,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/UltravioletSensor.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/UltravioletSensor.cs
index 6009d90..05c2866 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/UltravioletSensor.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/UltravioletSensor.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// UltravioletSensor Class. Used for registering callbacks for ultraviolet sensor and getting ultraviolet data
     /// /// </summary>
-    public class UltravioletSensor : Sensor
+    public sealed class UltravioletSensor : Sensor
     {
         private static string UltravioletSensorKey = "http://tizen.org/feature/sensor.ultraviolet";
 
@@ -87,7 +87,7 @@ namespace Tizen.Sensor
             return count;
         }
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -97,7 +97,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/UncalibratedGyroscope.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/UncalibratedGyroscope.cs
index 04c368a..76d71b9 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/UncalibratedGyroscope.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/UncalibratedGyroscope.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// UncalibratedGyroscope Sensor Class. Used for registering callbacks for uncalibrated gyroscope and getting uncalibrated gyroscope data
     /// /// </summary>
-    public class UncalibratedGyroscope : Sensor
+    public sealed class UncalibratedGyroscope : Sensor
     {
         private static string UncalibratedGyroscopeKey = "http://tizen.org/feature/sensor.gyroscope.uncalibrated";
 
@@ -111,7 +111,7 @@ namespace Tizen.Sensor
             return count;
         }
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -121,7 +121,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/UncalibratedMagnetometer.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/UncalibratedMagnetometer.cs
index 7da8d5f..6697b0c 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/UncalibratedMagnetometer.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/UncalibratedMagnetometer.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// UncalibratedMagnetometer Sensor Class. Used for registering callbacks for uncalibrated magnetometer and getting uncalibrated magnetometer data
     /// /// </summary>
-    public class UncalibratedMagnetometer : Sensor
+    public sealed class UncalibratedMagnetometer : Sensor
     {
         private static string UncalibratedMagnetometerKey = "http://tizen.org/feature/sensor.magnetometer.uncalibrated";
 
@@ -135,7 +135,7 @@ namespace Tizen.Sensor
             return count;
         }
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -145,7 +145,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/WalkingActivityDetector.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/WalkingActivityDetector.cs
index d82fc78..da7d101 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/WalkingActivityDetector.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/WalkingActivityDetector.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// WalkingActivityDetector Class. Used for registering callbacks for walking activity detector and getting the walking state
     /// </summary>
-    public class WalkingActivityDetector : ActivityDetector
+    public sealed class WalkingActivityDetector : ActivityDetector
     {
         private static string ActivityDetectorKey = "http://tizen.org/feature/sensor.activity_recognition";
 
@@ -81,7 +81,7 @@ namespace Tizen.Sensor
         /// </summary>
         public event EventHandler<WalkingActivityDetectorDataUpdatedEventArgs> DataUpdated;
 
-        protected override void SensorEventCallback(IntPtr sensorHandle, IntPtr sensorPtr, IntPtr data)
+        protected internal override void SensorEventCallback(IntPtr sensorHandle, IntPtr sensorPtr, IntPtr data)
         {
             Interop.SensorEventStruct sensorData = Interop.IntPtrToEventStruct(sensorPtr);
             TimeSpan = new TimeSpan((Int64)sensorData.timestamp);
diff --git a/Tizen.Sensor/Tizen.Sensor/Plugins/WristUpGestureDetector.cs b/Tizen.Sensor/Tizen.Sensor/Plugins/WristUpGestureDetector.cs
index aa51a6c..9f0734e 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Plugins/WristUpGestureDetector.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Plugins/WristUpGestureDetector.cs
@@ -13,7 +13,7 @@ namespace Tizen.Sensor
     /// <summary>
     /// WristUpGestureDetector Class. Used for registering callbacks for wrist up gesture detector and getting the wrist up state
     /// </summary>
-    public class WristUpGestureDetector : Sensor
+    public sealed class WristUpGestureDetector : Sensor
     {
         private static string WristUpKey = "http://tizen.org/feature/sensor.wrist_up";
 
@@ -85,7 +85,7 @@ namespace Tizen.Sensor
         /// </summary>
         public event EventHandler<WristUpGestureDetectorDataUpdatedEventArgs> DataUpdated;
 
-        protected override void EventListenStart()
+        protected internal override void EventListenStart()
         {
             int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, SensorEventCallback, IntPtr.Zero);
             if (error != (int)SensorError.None)
@@ -95,7 +95,7 @@ namespace Tizen.Sensor
             }
         }
 
-        protected override void EventListenStop()
+        protected internal override void EventListenStop()
         {
             int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
             if (error != (int)SensorError.None)
diff --git a/Tizen.Sensor/Tizen.Sensor/Sensor.cs b/Tizen.Sensor/Tizen.Sensor/Sensor.cs
index 9bec4f2..041d581 100644..100755
--- a/Tizen.Sensor/Tizen.Sensor/Sensor.cs
+++ b/Tizen.Sensor/Tizen.Sensor/Sensor.cs
@@ -39,8 +39,8 @@ namespace Tizen.Sensor
         private IntPtr _listenerHandle = IntPtr.Zero;
 
         internal abstract SensorType GetSensorType();
-        protected abstract void EventListenStart();
-        protected abstract void EventListenStop();
+        protected internal abstract void EventListenStart();
+        protected internal abstract void EventListenStop();
 
         internal Sensor(uint index)
         {