Fix ScrollView Content area resize issue

 - When content of ScrollView was resized as smaller
   Scroll area was not adjust to fit the contents
 - It is a issue of data synchronization (ContentSize and Content.Height / Content.Width)
 - It was fixed, EFL scroller areas only resize from ContentSize changed callback

 - It is related with ScrollViewTest4, ScrollViewTest6

Change-Id: I2fed14bc106085dd1eaf83d877484a776fe21c24

2 files changed, 14 insertions, 16 deletions

diff --git a/Xamarin.Forms.Platform.Tizen/Renderers/LayoutRenderer.cs b/Xamarin.Forms.Platform.Tizen/Renderers/LayoutRenderer.cs
index 99e422e9..bf36afa4 100644
--- a/Xamarin.Forms.Platform.Tizen/Renderers/LayoutRenderer.cs
+++ b/Xamarin.Forms.Platform.Tizen/Renderers/LayoutRenderer.cs
@@ -14,22 +14,6 @@ namespace Xamarin.Forms.Platform.Tizen
 		{
 		}
 
-		protected override void UpdateLayout()
-		{
-			// in case of layouts we need to make sure that the minimum size of the native control is updated
-			// this is important in case of ScrollView, when it's content is likely to be wider/higher than the window
-			// EFL does not allow control to be larger than the window if it's minimum size is smaller than window dimensions
-			ScrollView scrollView = Element.Parent as ScrollView;
-			if (scrollView != null)
-			{
-				Size size = scrollView.ContentSize;
-				Control.MinimumWidth = Forms.ConvertToScaledPixel(Math.Max(size.Width, scrollView.Content.Width));
-				Control.MinimumHeight = Forms.ConvertToScaledPixel(Math.Max(size.Height, scrollView.Content.Height));
-			}
-
-			base.UpdateLayout();
-		}
-
 		protected override void OnElementChanged(ElementChangedEventArgs<Layout> e)
 		{
 			if (null == Control)
diff --git a/Xamarin.Forms.Platform.Tizen/Renderers/ScrollViewRenderer.cs b/Xamarin.Forms.Platform.Tizen/Renderers/ScrollViewRenderer.cs
index 426cccaf..76ce555e 100644
--- a/Xamarin.Forms.Platform.Tizen/Renderers/ScrollViewRenderer.cs
+++ b/Xamarin.Forms.Platform.Tizen/Renderers/ScrollViewRenderer.cs
@@ -70,6 +70,7 @@ namespace Xamarin.Forms.Platform.Tizen
 			if (_content != null)
 			{
 				Control.SetContent(_content, true);
+				UpdateContentSize();
 			}
 		}
 
@@ -100,6 +101,15 @@ namespace Xamarin.Forms.Platform.Tizen
 			}
 		}
 
+		void UpdateContentSize()
+		{
+			if (_content == null)
+				return;
+
+			_content.MinimumWidth = Forms.ConvertToScaledPixel(Element.ContentSize.Width);
+			_content.MinimumHeight = Forms.ConvertToScaledPixel(Element.ContentSize.Height);
+		}
+
 		/// <summary>
 		/// An event raised on element's property change.
 		/// </summary>
@@ -111,6 +121,10 @@ namespace Xamarin.Forms.Platform.Tizen
 			{
 				UpdateOrientation();
 			}
+			else if (ScrollView.ContentSizeProperty.PropertyName == e.PropertyName)
+			{
+				UpdateContentSize();
+			}
 
 			base.OnElementPropertyChanged(sender, e);
 		}