From 17fdde66d94155fc62a034fa6658995bef6fd6e5 Mon Sep 17 00:00:00 2001
From: Jason Smith <jason.smith@xamarin.com>
Date: Tue, 22 Mar 2016 13:02:25 -0700
Subject: Initial import

---
 Xamarin.Forms.Core/TemplatedView.cs | 68 +++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 Xamarin.Forms.Core/TemplatedView.cs

(limited to 'Xamarin.Forms.Core/TemplatedView.cs')

diff --git a/Xamarin.Forms.Core/TemplatedView.cs b/Xamarin.Forms.Core/TemplatedView.cs
new file mode 100644
index 00000000..30dadb92
--- /dev/null
+++ b/Xamarin.Forms.Core/TemplatedView.cs
@@ -0,0 +1,68 @@
+using System;
+using System.Collections.Generic;
+
+namespace Xamarin.Forms
+{
+	public class TemplatedView : Layout, IControlTemplated
+	{
+		public static readonly BindableProperty ControlTemplateProperty = BindableProperty.Create(nameof(ControlTemplate), typeof(ControlTemplate), typeof(TemplatedView), null,
+			propertyChanged: TemplateUtilities.OnControlTemplateChanged);
+
+		public ControlTemplate ControlTemplate
+		{
+			get { return (ControlTemplate)GetValue(ControlTemplateProperty); }
+			set { SetValue(ControlTemplateProperty, value); }
+		}
+
+		IList<Element> IControlTemplated.InternalChildren => InternalChildren;
+
+		protected override void LayoutChildren(double x, double y, double width, double height)
+		{
+			for (var i = 0; i < LogicalChildren.Count; i++)
+			{
+				Element element = LogicalChildren[i];
+				var child = element as View;
+				if (child != null)
+					LayoutChildIntoBoundingRegion(child, new Rectangle(x, y, width, height));
+			}
+		}
+
+		[Obsolete("Use OnMeasure")]
+		protected override SizeRequest OnSizeRequest(double widthConstraint, double heightConstraint)
+		{
+			double widthRequest = WidthRequest;
+			double heightRequest = HeightRequest;
+			var childRequest = new SizeRequest();
+
+			if ((widthRequest == -1 || heightRequest == -1) && InternalChildren.Count > 0)
+			{
+				childRequest = ((View)InternalChildren[0]).Measure(widthConstraint, heightConstraint, MeasureFlags.IncludeMargins);
+			}
+
+			return new SizeRequest
+			{
+				Request = new Size { Width = widthRequest != -1 ? widthRequest : childRequest.Request.Width, Height = heightRequest != -1 ? heightRequest : childRequest.Request.Height },
+				Minimum = childRequest.Minimum
+			};
+		}
+
+		internal override void ComputeConstraintForView(View view)
+		{
+			bool isFixedHorizontally = (Constraint & LayoutConstraint.HorizontallyFixed) != 0;
+			bool isFixedVertically = (Constraint & LayoutConstraint.VerticallyFixed) != 0;
+
+			var result = LayoutConstraint.None;
+			if (isFixedVertically && view.VerticalOptions.Alignment == LayoutAlignment.Fill)
+				result |= LayoutConstraint.VerticallyFixed;
+			if (isFixedHorizontally && view.HorizontalOptions.Alignment == LayoutAlignment.Fill)
+				result |= LayoutConstraint.HorizontallyFixed;
+			view.ComputedConstraint = result;
+		}
+
+		internal override void SetChildInheritedBindingContext(Element child, object context)
+		{
+			if (ControlTemplate == null)
+				base.SetChildInheritedBindingContext(child, context);
+		}
+	}
+}
\ No newline at end of file
-- 
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