1 files changed, 46 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.UAP/ToolbarPlacementHelper.cs b/Xamarin.Forms.Platform.UAP/ToolbarPlacementHelper.cs
new file mode 100644
index 00000000..24feecbc
--- /dev/null
+++ b/Xamarin.Forms.Platform.UAP/ToolbarPlacementHelper.cs
@@ -0,0 +1,46 @@
+using Windows.UI.Xaml.Controls;
+using Xamarin.Forms.PlatformConfiguration.WindowsSpecific;
+
+namespace Xamarin.Forms.Platform.UWP
+{
+	internal class ToolbarPlacementHelper
+	{
+		public static void UpdateToolbarPlacement(CommandBar toolbar, ToolbarPlacement toolbarPlacement, Border bottomCommandBarArea, Border topCommandBarArea)
+		{
+			if (toolbar == null || bottomCommandBarArea == null || topCommandBarArea == null)
+			{
+				// Haven't applied the template yet, so we're not ready to do this
+				return;
+			}
+
+			// Figure out what's hosting the command bar right now
+			var current = toolbar.Parent as Border;
+
+			// And figure out where it should be
+			Border target;
+
+			switch (toolbarPlacement)
+			{
+				case ToolbarPlacement.Top:
+					target = topCommandBarArea;
+					break;
+				case ToolbarPlacement.Bottom:
+					target = bottomCommandBarArea;
+					break;
+				case ToolbarPlacement.Default:
+				default:
+					target = Device.Idiom == TargetIdiom.Phone ? bottomCommandBarArea : topCommandBarArea;
+					break;
+			}
+
+			if (current == null || target == null || current == target)
+			{
+				return;
+			}
+
+			// Remove the command bar from its current host and add it to the new one
+			current.Child = null;
+			target.Child = toolbar;
+		}
+	}
+}
+\ No newline at end of file