Initial import

1 files changed, 46 insertions, 0 deletions

diff --git a/Xamarin.Forms.Platform.WinRT/ListGroupHeaderPresenter.cs b/Xamarin.Forms.Platform.WinRT/ListGroupHeaderPresenter.cs
new file mode 100644
index 00000000..45818977
--- /dev/null
+++ b/Xamarin.Forms.Platform.WinRT/ListGroupHeaderPresenter.cs
@@ -0,0 +1,46 @@
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Controls;
+using Windows.UI.Xaml.Input;
+using Windows.UI.Xaml.Media;
+
+#if WINDOWS_UWP
+
+namespace Xamarin.Forms.Platform.UWP
+#else
+
+namespace Xamarin.Forms.Platform.WinRT
+#endif
+{
+	public class ListGroupHeaderPresenter : Windows.UI.Xaml.Controls.ContentPresenter
+	{
+		void OnTapped(object sender, TappedRoutedEventArgs tappedRoutedEventArgs)
+		{
+			var element = VisualTreeHelper.GetParent(this) as FrameworkElement;
+			while (element != null)
+			{
+				var list = element as Windows.UI.Xaml.Controls.ListView;
+				if (list != null)
+					element = list.SemanticZoomOwner;
+
+				if (element == null)
+					break;
+
+				var zoom = element as SemanticZoom;
+				if (zoom != null)
+				{
+					zoom.ToggleActiveView();
+
+					var grid = zoom.ZoomedOutView as GridView;
+					if (grid != null)
+					{
+						grid.MakeVisible(new SemanticZoomLocation { Item = DataContext });
+					}
+
+					return;
+				}
+
+				element = VisualTreeHelper.GetParent(element) as FrameworkElement;
+			}
+		}
+	}
+}
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