Fix Layout issue

 - All layouts should update all children position when their position is updated
   But it was done by EFL box
 - Some case, before child was added into Box(efl), Layout(Box) was moved.
   and child who didn't added into Box does not moved

 - Fixing
  * Remove overried UpdateLayout method on LayoutRenderer
  * Moved SetRenderer position after adding the children

 - Refactoring
  * Change IVisualElementRenderer interface
  * UpdateNativeGeometry was Changed to private
  * UpdateLayout was exposed as IVisualElementRenderer

Change-Id: I74bfdab00667bd6fa13cd8d392868af901b98dae

3 files changed, 21 insertions, 24 deletions

diff --git a/Xamarin.Forms.Platform.Tizen/Renderers/IVisualElementRenderer.cs b/Xamarin.Forms.Platform.Tizen/Renderers/IVisualElementRenderer.cs
index 4702fd37..0b64549f 100644
--- a/Xamarin.Forms.Platform.Tizen/Renderers/IVisualElementRenderer.cs
+++ b/Xamarin.Forms.Platform.Tizen/Renderers/IVisualElementRenderer.cs
@@ -34,6 +34,6 @@ namespace Xamarin.Forms.Platform.Tizen
 
 		SizeRequest GetDesiredSize(double widthConstraint, double heightConstraint);
 
-		void UpdateNativeGeometry();
+		void UpdateLayout();
 	}
 }
diff --git a/Xamarin.Forms.Platform.Tizen/Renderers/LayoutRenderer.cs b/Xamarin.Forms.Platform.Tizen/Renderers/LayoutRenderer.cs
index 69fd24a8..226afbb2 100644
--- a/Xamarin.Forms.Platform.Tizen/Renderers/LayoutRenderer.cs
+++ b/Xamarin.Forms.Platform.Tizen/Renderers/LayoutRenderer.cs
@@ -42,18 +42,6 @@ namespace Xamarin.Forms.Platform.Tizen
 			base.Dispose(disposing);
 		}
 
-		protected override void UpdateLayout()
-		{
-			base.UpdateLayout();
-			if (!_layoutUpdatedRegistered)
-			{
-				foreach (var child in Element.LogicalChildren)
-				{
-					Platform.GetRenderer(child)?.UpdateNativeGeometry();
-				}
-			}
-		}
-
 		void OnLayoutUpdated(object sender, Native.LayoutEventArgs e)
 		{
 			DoLayout(e);
diff --git a/Xamarin.Forms.Platform.Tizen/Renderers/VisualElementRenderer.cs b/Xamarin.Forms.Platform.Tizen/Renderers/VisualElementRenderer.cs
index 4a409f09..0d6b3036 100644
--- a/Xamarin.Forms.Platform.Tizen/Renderers/VisualElementRenderer.cs
+++ b/Xamarin.Forms.Platform.Tizen/Renderers/VisualElementRenderer.cs
@@ -188,9 +188,6 @@ namespace Xamarin.Forms.Platform.Tizen
 			// send notification
 			OnElementChanged(new ElementChangedEventArgs<TElement>(oldElement, newElement));
 
-			// store renderer for the new element
-			Platform.SetRenderer(newElement, this);
-
 			// add children
 			var logicalChildren = (newElement as IElementController).LogicalChildren;
 			foreach (Element child in logicalChildren)
@@ -198,18 +195,15 @@ namespace Xamarin.Forms.Platform.Tizen
 				AddChild(child);
 			}
 
+			// store renderer for the new element
+			Platform.SetRenderer(newElement, this);
+
 			OnElementReady();
 		}
 
-		public void UpdateNativeGeometry()
+		void IVisualElementRenderer.UpdateLayout()
 		{
-			var updatedGeometry = new Rectangle(ComputeAbsolutePoint(Element), new Size(Element.Width, Element.Height)).ToPixel();
-
-			if (NativeView.Geometry != updatedGeometry)
-			{
-				NativeView.Geometry = updatedGeometry;
-				ApplyTransformation();
-			}
+			UpdateLayout();
 		}
 
 		void IVisualElementRenderer.SetElement(VisualElement element)
@@ -288,6 +282,10 @@ namespace Xamarin.Forms.Platform.Tizen
 					{
 						Platform.SetRenderer(Element, null);
 					}
+
+					// Reset Element geometry, to re-calculate when Renderer was re-attached
+					Element.Layout(new Rectangle(0, 0, -1, -1));
+
 					Element = default(TElement);
 				}
 
@@ -438,6 +436,17 @@ namespace Xamarin.Forms.Platform.Tizen
 			}
 		}
 
+		void UpdateNativeGeometry()
+		{
+			var updatedGeometry = new Rectangle(ComputeAbsolutePoint(Element), new Size(Element.Width, Element.Height)).ToPixel();
+
+			if (NativeView.Geometry != updatedGeometry)
+			{
+				NativeView.Geometry = updatedGeometry;
+				ApplyTransformation();
+			}
+		}
+
 		void NativeViewDeleted(object sender, EventArgs e)
 		{
 			Dispose();