Fix BeginInvokeOnMainThread

 - If current thread is main thread, directly call instead of post
 - Rollback SynchronizationContext
 - Add IsInvokedREquired implementation

Change-Id: Ia00c9ca80038d6aeca9a5e2a42e69aaa5073be64

1 files changed, 10 insertions, 6 deletions

diff --git a/Xamarin.Forms.Platform.Tizen/TizenPlatformServices.cs b/Xamarin.Forms.Platform.Tizen/TizenPlatformServices.cs
index ea7dbc0b..37354959 100644
--- a/Xamarin.Forms.Platform.Tizen/TizenPlatformServices.cs
+++ b/Xamarin.Forms.Platform.Tizen/TizenPlatformServices.cs
@@ -70,10 +70,7 @@ namespace Xamarin.Forms.Platform.Tizen
 
 			private void HandleElapsed(object state)
 			{
-				s_context.Post(delegate (object o)
-				{
-					SendSignals(-1);
-				}, null);
+				s_context.Post((o) => SendSignals(-1), null);
 			}
 		}
 
@@ -104,7 +101,14 @@ namespace Xamarin.Forms.Platform.Tizen
 
 		public void BeginInvokeOnMainThread(Action action)
 		{
-			s_context.Post((o) => action(), null);
+			if (ElmSharp.EcoreMainloop.IsMainThread)
+			{
+				action();
+			}
+			else
+			{
+				s_context.Post((o) => action(), null);
+			}
 		}
 
 		public Xamarin.Forms.Internals.Ticker CreateTicker()
@@ -179,7 +183,7 @@ namespace Xamarin.Forms.Platform.Tizen
 		{
 			get
 			{
-				return false;
+				return !ElmSharp.EcoreMainloop.IsMainThread;
 			}
 		}