Add async interfaces.

Author: Claudia Beatriz Murialdo Garrone

dotnet/src/dotnetcore/GxClasses.Web/Middleware/HandlerFactory.cs

@@ -75,7 +75,7 @@ public async Task Invoke(HttpContext context)
 						handler.sendAdditionalHeaders();
 						return Task.CompletedTask;
 					});
-					GXWebProcedure gxWebProc = handler as GXWebProcedure;
+					GXHttpHandler gxWebProc = handler as GXHttpHandler;
 					if (gxWebProc != null && gxWebProc.GetAsyncEnabledInternal())
 					{
 						await gxWebProc.ProcessRequestAsync(context);

dotnet/src/dotnetframework/GxClasses/Middleware/GXHttp.cs

@@ -296,7 +296,7 @@ private bool IsFullAjaxRequest(HttpContext httpContext)
 		public virtual void InitializeDynEvents() { throw new Exception("The method or operation is not implemented."); }
 		public virtual void initialize_properties() { throw new Exception("The method or operation is not implemented."); }
 		public virtual void webExecute() { throw new Exception("The method or operation is not implemented."); }
-		protected virtual Task WebExecuteAsync()
+		public virtual Task WebExecuteAsync()
 		{
 			GXLogging.Warn(log, this.GetType().FullName + " not generated as async service");
 			webExecute();
@@ -2945,10 +2945,10 @@ protected void initialize(int objClass, int objId, int dbgLines, long hash)
 	public abstract class GXWebComponent : GXHttpHandler
 	{
 
-		public abstract void componentstart();
-		public abstract void componentdraw();
-		public abstract void componentprepare(Object[] parms);
-		public abstract void componentbind(Object[] values);
+		public virtual void componentstart() { }
+		public virtual void componentdraw() { }
+		public virtual void componentprepare(Object[] parms) { }
+		public virtual void componentbind(Object[] values) { }
 		public abstract String getstring(String s);
 
 		public bool IsUrlCreated()
@@ -3096,6 +3096,27 @@ public virtual void componentjscripts()
 		public virtual void componentthemes()
 		{
 		}
+		public virtual async Task ComponentRestoreStateAsync(string sPPrefix, string sPSFPrefix)
+		{
+			await Task.CompletedTask;
+		}
+		public virtual async Task ComponentProcessAsync(string sPPrefix, string sPSFPrefix, string sEvt)
+		{
+			await Task.CompletedTask;
+		}
+		public virtual async Task ComponentPrepareAsync(Object[] parms)
+		{
+			await Task.CompletedTask;
+		}
+		public virtual async Task ComponentStartAsync()
+		{
+			await Task.CompletedTask;
+		}
+		public virtual async Task ComponentDrawAsync()
+		{
+			await Task.CompletedTask;
+		}
+
 	}
 
 	public class GXErrorWebComponent : GXWebComponent

dotnet/src/dotnetframework/GxClasses/View/GXGridStateHandler.cs

@@ -1,20 +1,43 @@
 
 using System;
+using System.Threading.Tasks;
 using GeneXus.Application;
 using GeneXus.Core.genexus.common;
 
 namespace GeneXus.WebControls
 {
+	public class GXGridStateHandlerAsync: GXGridStateHandler
+	{
+		readonly Func<Task> varsFromState;
+		readonly Func<Task> varsToState;
+		public GXGridStateHandlerAsync(IGxContext context, string gridName, string programName, Func<Task> varsFromState, Func<Task> varsToState)
+		{
+			this.gridName = $"{programName}_{gridName}_{GRID_STATE}";
+			this.varsFromState = varsFromState;
+			this.varsToState = varsToState;
+			this.context = context;
+			state = new SdtGridState(context);
+			dirty = true;
+		}
+		protected override void ToState()
+		{
+			varsToState().GetAwaiter().GetResult();
+		}
+		protected override void FromState()
+		{
+			varsFromState().GetAwaiter().GetResult();
+		}
+	}
+
 	public class GXGridStateHandler
 	{
-		string gridName;
+		protected string gridName;
 		readonly Action varsFromState;
 		readonly Action varsToState;
-		IGxContext context;
-		SdtGridState state;
-		bool dirty;
-		const string GRID_STATE = "GridState";
-
+		protected IGxContext context;
+		protected SdtGridState state;
+		protected bool dirty;
+		protected const string GRID_STATE = "GridState";
 		public GXGridStateHandler(IGxContext context, string gridName, string programName, Action varsFromState, Action varsToState)
 		{
 			this.gridName = $"{programName}_{gridName}_{GRID_STATE}";
@@ -24,10 +47,13 @@ public GXGridStateHandler(IGxContext context, string gridName, string programNam
 			state = new SdtGridState(context);
 			dirty = true;
 		}
+		internal GXGridStateHandler()
+		{
+		}
 		public void SaveGridState()
 		{
 			state.FromJSonString(context.GetSession().Get(gridName));
-			varsToState();
+			ToState();
 			context.GetSession().Set(gridName, state.ToJSonString());
 			dirty = true;
 		}
@@ -37,10 +63,19 @@ public void LoadGridState()
 			{
 				state = new SdtGridState(context);
 				state.FromJSonString(context.GetSession().Get(gridName));
-				varsFromState();
+				FromState();
 				dirty = true;
 			}
 		}
+
+		protected virtual void FromState()
+		{
+			varsFromState();
+		}
+		protected virtual void ToState()
+		{
+			varsToState();
+		}
 		public string FilterValues(int idx)
 		{
 			return state.gxTpr_Inputvalues[idx-1].gxTpr_Value;