Introduce LocalizableComponent

Oqtane.Client/Modules/Controls/LocalizableComponent.cs

@@ -0,0 +1,34 @@
+using System;
+using Microsoft.AspNetCore.Components;
+using Microsoft.Extensions.Localization;
+using Oqtane.Shared;
+
+namespace Oqtane.Modules.Controls
+{
+    public class LocalizableComponent : ModuleControlBase
+    {
+        [Parameter]
+        public string ResourceKey { get; set; }
+
+        protected IStringLocalizer Localizer { get; private set; }
+
+        protected override void OnParametersSet()
+        {
+            if (!String.IsNullOrEmpty(ResourceKey))
+            {
+                if (ModuleState?.ModuleType != null)
+                {
+                    var moduleType = Type.GetType(ModuleState.ModuleType);
+                    var localizerTypeName = $"Microsoft.Extensions.Localization.IStringLocalizer`1[[{moduleType.AssemblyQualifiedName}]], Microsoft.Extensions.Localization.Abstractions";
+                    var localizerType = Type.GetType(localizerTypeName);
+
+                    // HACK: Use ServiceActivator instead of injecting IHttpContextAccessor, because HttpContext throws NRE in WebAssembly runtime
+                    using (var scope = ServiceActivator.GetScope())
+                    {
+                        Localizer = (IStringLocalizer)scope.ServiceProvider.GetService(localizerType);
+                    }
+                }
+            }
+        }
+    }
+}