Add JsonEditorHandler to UI hint handlers

A new JsonEditorHandler class is added under the "Handlers" directory of Elsa.Studio.UIHints module. This handler class is designed to support "json-editor" UI hint in the application. It has been included in the default UI hint handlers registration in the "ServiceCollectionExtensions" class.

src/modules/Elsa.Studio.UIHints/Extensions/ServiceCollectionExtensions.cs

@@ -12,8 +12,6 @@ public static class ServiceCollectionExtensions
     /// <summary>
     /// Adds the default UI hint handlers.
     /// </summary>
-    /// <param name="services"></param>
-    /// <returns></returns>
     public static IServiceCollection AddDefaultUIHintHandlers(this IServiceCollection services)
     {
         return services
@@ -24,6 +22,7 @@ public static IServiceCollection AddDefaultUIHintHandlers(this IServiceCollectio
             .AddUIHintHandler<MultiLineHandler>()
             .AddUIHintHandler<DropDownHandler>()
             .AddUIHintHandler<CodeEditorHandler>()
+            .AddUIHintHandler<JsonEditorHandler>()
             .AddUIHintHandler<SwitchEditorHandler>()
             .AddUIHintHandler<HttpStatusCodesHandler>()
             .AddUIHintHandler<VariablePickerHandler>()

src/modules/Elsa.Studio.UIHints/Handlers/JsonEditorHandler.cs

@@ -0,0 +1,22 @@
+using Elsa.Studio.Contracts;
+using Elsa.Studio.Models;
+using Elsa.Studio.UIHints.Components;
+using Microsoft.AspNetCore.Components;
+
+namespace Elsa.Studio.UIHints.Handlers;
+
+public class JsonEditorHandler : IUIHintHandler
+{
+    public bool GetSupportsUIHint(string uiHint) => uiHint == "json-editor";
+    public string UISyntax => WellKnownSyntaxNames.Literal;
+
+    public RenderFragment DisplayInputEditor(DisplayInputEditorContext context)
+    {
+        return builder =>
+        {
+            builder.OpenComponent(0, typeof(Code));
+            builder.AddAttribute(1, nameof(Code.EditorContext), context);
+            builder.CloseComponent();
+        };
+    }
+}