Initial import

1 files changed, 56 insertions, 0 deletions

diff --git a/Xamarin.Forms.Platform.WinRT/VisualElementExtensions.cs b/Xamarin.Forms.Platform.WinRT/VisualElementExtensions.cs
new file mode 100644
index 00000000..9dfd12bb
--- /dev/null
+++ b/Xamarin.Forms.Platform.WinRT/VisualElementExtensions.cs
@@ -0,0 +1,56 @@
+using System;
+
+#if WINDOWS_UWP
+
+namespace Xamarin.Forms.Platform.UWP
+#else
+
+namespace Xamarin.Forms.Platform.WinRT
+#endif
+{
+	public static class VisualElementExtensions
+	{
+		public static IVisualElementRenderer GetOrCreateRenderer(this VisualElement self)
+		{
+			if (self == null)
+				throw new ArgumentNullException("self");
+
+			IVisualElementRenderer renderer = Platform.GetRenderer(self);
+			if (renderer == null)
+			{
+				renderer = RendererFactory.CreateRenderer(self);
+				Platform.SetRenderer(self, renderer);
+			}
+
+			return renderer;
+		}
+
+		internal static void Cleanup(this VisualElement self)
+		{
+			if (self == null)
+				throw new ArgumentNullException("self");
+
+			IVisualElementRenderer renderer = Platform.GetRenderer(self);
+
+			foreach (Element element in self.Descendants())
+			{
+				var visual = element as VisualElement;
+				if (visual == null)
+					continue;
+
+				IVisualElementRenderer childRenderer = Platform.GetRenderer(visual);
+				if (childRenderer != null)
+				{
+					childRenderer.Dispose();
+					Platform.SetRenderer(visual, null);
+				}
+			}
+
+			if (renderer != null)
+			{
+				renderer.Dispose();
+				Platform.SetRenderer(self, null);
+			}
+		}
+	}
+}
\ No newline at end of file