Refactoring LabelRenderer

 - Optimize update of FormattedText

Change-Id: Iad0b8a4972bfef97f28502d724d443188411f760

3 files changed, 25 insertions, 21 deletions

diff --git a/Xamarin.Forms.Platform.Tizen/Native/FormattedString.cs b/Xamarin.Forms.Platform.Tizen/Native/FormattedString.cs
index da3d1460..cb93aff9 100644
--- a/Xamarin.Forms.Platform.Tizen/Native/FormattedString.cs
+++ b/Xamarin.Forms.Platform.Tizen/Native/FormattedString.cs
@@ -92,8 +92,7 @@ namespace Xamarin.Forms.Platform.Tizen.Native
 			}
 			else
 			{
-				var conStr = string.Concat(from span in this.Spans select span.GetMarkupText());
-				return conStr.Replace(Environment.NewLine, "<br>");
+				return string.Concat(from span in Spans select span.GetMarkupText());
 			}
 		}
 
diff --git a/Xamarin.Forms.Platform.Tizen/Native/Span.cs b/Xamarin.Forms.Platform.Tizen/Native/Span.cs
index c92fefcf..f0932f4b 100755..100644
--- a/Xamarin.Forms.Platform.Tizen/Native/Span.cs
+++ b/Xamarin.Forms.Platform.Tizen/Native/Span.cs
@@ -1,3 +1,4 @@
+using System;
 using System.Text;
 using EColor = ElmSharp.Color;
 
@@ -272,7 +273,7 @@ namespace Xamarin.Forms.Platform.Tizen.Native
 		{
 			return text.Replace("<", "&lt;")
 					   .Replace(">", "&gt;")
-					   .Replace("\n", "<br>");
+					   .Replace(Environment.NewLine, "<br>");
 		}
 
 		public string GetStyle()
diff --git a/Xamarin.Forms.Platform.Tizen/Renderers/LabelRenderer.cs b/Xamarin.Forms.Platform.Tizen/Renderers/LabelRenderer.cs
index 0f723790..1fdd7fba 100644
--- a/Xamarin.Forms.Platform.Tizen/Renderers/LabelRenderer.cs
+++ b/Xamarin.Forms.Platform.Tizen/Renderers/LabelRenderer.cs
@@ -57,22 +57,15 @@ namespace Xamarin.Forms.Platform.Tizen
 			foreach (var span in formattedString.Spans)
 			{
 				Native.Span nativeSpan = new Native.Span();
-				nativeSpan.FormattedText = span.Text;
-				nativeSpan.FontAttributes = span.FontAttributes == FontAttributes.None ? Element.FontAttributes : span.FontAttributes;
-				nativeSpan.FontFamily = span.FontFamily == null ? Element.FontFamily : span.FontFamily;
-				nativeSpan.FontSize = span.FontSize == Device.GetNamedSize(NamedSize.Default, typeof(Label), true) ? Element.FontSize : span.FontSize;
+				nativeSpan.Text = span.Text;
+				nativeSpan.FontAttributes = span.FontAttributes;
+				nativeSpan.FontFamily = span.FontFamily;
+				nativeSpan.FontSize = span.FontSize;
 				nativeSpan.LineBreakMode = Control.LineBreakMode;
-				nativeSpan.HorizontalTextAlignment = Control.HorizontalTextAlignment;
+				nativeSpan.VerticalTextAlignment = Control.VerticalTextAlignment;
+				nativeSpan.ForegroundColor = span.ForegroundColor.ToNative();
+				nativeSpan.BackgroundColor = span.BackgroundColor.ToNative();
 
-				if (span.ForegroundColor.IsDefault)
-					nativeSpan.ForegroundColor = Element.TextColor.IsDefault ? s_defaultForegroundColor : Element.TextColor.ToNative();
-				else
-					nativeSpan.ForegroundColor = span.ForegroundColor.ToNative();
-
-				if (span.BackgroundColor.IsDefault)
-					nativeSpan.BackgroundColor = Element.BackgroundColor.IsDefault ? s_defaultBackgroundColor : Element.BackgroundColor.ToNative();
-				else
-					nativeSpan.BackgroundColor = span.BackgroundColor.ToNative();
 
 				nativeString.Spans.Add(nativeSpan);
 			}
@@ -89,14 +82,20 @@ namespace Xamarin.Forms.Platform.Tizen
 		void UpdateTextColor()
 		{
 			Control.TextColor = Element.TextColor.IsDefault ? s_defaultTextColor : Element.TextColor.ToNative();
-			UpdateFormattedText();
 		}
 
 		void UpdateTextAlignment()
 		{
+			if (Control.FormattedText != null)
+			{
+				foreach (var span in Control.FormattedText.Spans)
+				{
+					span.VerticalTextAlignment = Element.VerticalTextAlignment.ToNative();
+				}
+			}
+
 			Control.HorizontalTextAlignment = Element.HorizontalTextAlignment.ToNative();
 			Control.VerticalTextAlignment = Element.VerticalTextAlignment.ToNative();
-			UpdateFormattedText();
 		}
 
 		void UpdateFontProperties()
@@ -104,13 +103,18 @@ namespace Xamarin.Forms.Platform.Tizen
 			Control.FontSize = Element.FontSize;
 			Control.FontAttributes = Element.FontAttributes;
 			Control.FontFamily = Element.FontFamily;
-			UpdateFormattedText();
 		}
 
 		void UpdateLineBreakMode()
 		{
+			if (Control.FormattedText != null)
+			{
+				foreach (var span in Control.FormattedText.Spans)
+				{
+					span.LineBreakMode = ConvertToNativeLineBreakMode(Element.LineBreakMode);
+				}
+			}
 			Control.LineBreakMode = ConvertToNativeLineBreakMode(Element.LineBreakMode);
-			UpdateFormattedText();
 		}
 
 		Native.LineBreakMode ConvertToNativeLineBreakMode(LineBreakMode mode)