Update ResourceCollectionProvider to take advantage of Declarative persistent component state

src/Components/Endpoints/src/DependencyInjection/RazorComponentsServiceCollectionExtensions.cs

@@ -75,6 +75,7 @@ public static IRazorComponentsBuilder AddRazorComponents(this IServiceCollection
         services.TryAddScoped<WebAssemblySettingsEmitter>();
 
         services.TryAddScoped<ResourceCollectionProvider>();
+        RegisterPersistentComponentStateServiceCollectionExtensions.AddPersistentServiceRegistration<ResourceCollectionProvider>(services, RenderMode.InteractiveWebAssembly);
 
         // Form handling
         services.AddSupplyValueFromFormProvider();

src/Components/Shared/src/ResourceCollectionProvider.cs

@@ -11,36 +11,29 @@ namespace Microsoft.AspNetCore.Components;
 
 internal class ResourceCollectionProvider
 {
-    private const string ResourceCollectionUrlKey = "__ResourceCollectionUrl";
     private string? _url;
+
+    [SupplyParameterFromPersistentComponentState]
+    public string? ResourceCollectionUrl
+    {
+        get => _url;
+        set => _url = value;
+    }
     private ResourceAssetCollection? _resourceCollection;
-    private readonly PersistentComponentState _state;
     private readonly IJSRuntime _jsRuntime;
-
-    [UnconditionalSuppressMessage("Trimming", "IL2026:Members annotated with 'RequiresUnreferencedCodeAttribute' require dynamic access otherwise can break functionality when trimming application code", Justification = "Strings are not trimmed")]
-    public ResourceCollectionProvider(PersistentComponentState state, IJSRuntime jsRuntime)
+    public ResourceCollectionProvider(IJSRuntime jsRuntime)
     {
-        _state = state;
         _jsRuntime = jsRuntime;
-        _ = _state.TryTakeFromJson(ResourceCollectionUrlKey, out _url);
     }
 
     [MemberNotNull(nameof(_url))]
-    [UnconditionalSuppressMessage("Trimming", "IL2026:Members annotated with 'RequiresUnreferencedCodeAttribute' require dynamic access otherwise can break functionality when trimming application code", Justification = "Strings are not trimmed")]
     internal void SetResourceCollectionUrl(string url)
     {
         if (_url != null)
         {
             throw new InvalidOperationException("The resource collection URL has already been set.");
         }
         _url = url;
-        PersistingComponentStateSubscription registration = default;
-        registration = _state.RegisterOnPersisting(() =>
-        {
-            _state.PersistAsJson(ResourceCollectionUrlKey, _url);
-            registration.Dispose();
-            return Task.CompletedTask;
-        }, RenderMode.InteractiveWebAssembly);
     }
 
     internal async Task<ResourceAssetCollection> GetResourceCollection()

src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHostBuilder.cs

@@ -308,6 +308,7 @@ internal void InitializeDefaultServices()
         Services.AddSupplyValueFromPersistentComponentStateProvider();
         Services.AddSingleton<IErrorBoundaryLogger, WebAssemblyErrorBoundaryLogger>();
         Services.AddSingleton<ResourceCollectionProvider>();
+        RegisterPersistentComponentStateServiceCollectionExtensions.AddPersistentServiceRegistration<ResourceCollectionProvider>(Services, RenderMode.InteractiveWebAssembly);
         Services.AddLogging(builder =>
         {
             builder.AddProvider(new WebAssemblyConsoleLoggerProvider(DefaultWebAssemblyJSRuntime.Instance));