1 files changed, 72 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.WinRT/StepperRenderer.cs b/Xamarin.Forms.Platform.WinRT/StepperRenderer.cs
new file mode 100644
index 00000000..7a4724cf
--- /dev/null
+++ b/Xamarin.Forms.Platform.WinRT/StepperRenderer.cs
@@ -0,0 +1,72 @@
+using System;
+using System.ComponentModel;
+
+#if WINDOWS_UWP
+
+namespace Xamarin.Forms.Platform.UWP
+#else
+
+namespace Xamarin.Forms.Platform.WinRT
+#endif
+{
+	public class StepperRenderer : ViewRenderer<Stepper, StepperControl>
+	{
+		protected override void OnElementChanged(ElementChangedEventArgs<Stepper> e)
+		{
+			base.OnElementChanged(e);
+
+			if (e.NewElement != null)
+			{
+				if (Control == null)
+				{
+					SetNativeControl(new StepperControl());
+					Control.ValueChanged += OnControlValue;
+				}
+
+				UpdateMaximum();
+				UpdateMinimum();
+				UpdateValue();
+				UpdateIncrement();
+			}
+		}
+
+		protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
+		{
+			base.OnElementPropertyChanged(sender, e);
+
+			if (e.PropertyName == Stepper.ValueProperty.PropertyName)
+				UpdateValue();
+			else if (e.PropertyName == Stepper.MaximumProperty.PropertyName)
+				UpdateMaximum();
+			else if (e.PropertyName == Stepper.MinimumProperty.PropertyName)
+				UpdateMinimum();
+			else if (e.PropertyName == Stepper.IncrementProperty.PropertyName)
+				UpdateIncrement();
+		}
+
+		void OnControlValue(object sender, EventArgs e)
+		{
+			Element.SetValueCore(Stepper.ValueProperty, Control.Value);
+		}
+
+		void UpdateIncrement()
+		{
+			Control.Increment = Element.Increment;
+		}
+
+		void UpdateMaximum()
+		{
+			Control.Maximum = Element.Maximum;
+		}
+
+		void UpdateMinimum()
+		{
+			Control.Minimum = Element.Minimum;
+		}
+
+		void UpdateValue()
+		{
+			Control.Value = Element.Value;
+		}
+	}
+}
+\ No newline at end of file