Add a class filter for the assets (#1949)

* added a class filter for the assets

* addressing PR commets

* fix formatting

* fix formatting

* address comments

* add Localization for "All"

Localizations/ar.json

@@ -1,4 +1,5 @@
 {
+    "all": "الكل",
     "appreciation_message": "شكرًا لك على دعمك لـ AssetRipper!",
     "asset_ripper_free": "AssetRipper المجاني",
     "asset_ripper_premium": "AssetRipper بريميوم",
@@ -116,5 +117,6 @@
     "loading_step_locate_key_functions": "جارٍ مسح الملف الثنائي IL2Cpp للوظائف المكتبية",
     "export_primary_content": "تصدير المحتوى الأساسي",
     "export_unity_project": "تصدير مشروع Unity",
-    "c_sharp_langage_version_config_2": "C# 2"
+    "c_sharp_langage_version_config_2": "C# 2",
+    "filter": "تصفية"
 }

Localizations/en_US.json

@@ -1,4 +1,5 @@
 {
+    "all": "All",
     "an_error_occured_during_decompilation": "An error occurred during decompilation.",
     "appreciation_message": "Thank you for supporting AssetRipper!",
     "assembly_name": "Assembly Name",
@@ -96,6 +97,7 @@
     "file_id": "File ID",
     "format": "Format",
     "frequency": "Frequency",
+    "filter": "Filter",
     "game_object": "GameObject",
     "guid": "GUID",
     "height": "Height",

Source/AssetRipper.GUI.Web/Pages/Collections/CollectionAPI.cs

@@ -14,15 +14,31 @@ internal static class CollectionAPI
 		public const string Count = Base + "/Count";
 	}
 
-	private const string Path = "Path";
+	public const string Path = "Path";
+	public const string Class = "Class";
+
+	public static string GetViewUrl(CollectionPath path, string? classFilter = null)
+	{
+		string url = $"{Urls.View}?{GetPathQuery(path)}";
+		if (!string.IsNullOrEmpty(classFilter))
+		{
+			url += $"&{Class}={classFilter.ToUrl()}";
+		}
+		return url;
+	}
 
-	public static string GetViewUrl(CollectionPath path) => $"{Urls.View}?{GetPathQuery(path)}";
 	public static Task GetView(HttpContext context)
 	{
 		context.Response.DisableCaching();
 		if (TryGetCollectionFromQuery(context, out AssetCollection? collection, out CollectionPath path, out Task? failureTask))
 		{
-			return new ViewPage() { Collection = collection, Path = path }.WriteToResponse(context.Response);
+			string? classFilter = context.Request.Query[Class];
+			return new ViewPage()
+			{
+				Collection = collection,
+				Path = path,
+				ClassFilter = string.IsNullOrWhiteSpace(classFilter) ? null : classFilter
+			}.WriteToResponse(context.Response);
 		}
 		else
 		{

Source/AssetRipper.GUI.Web/Pages/Collections/ViewPage.cs

@@ -9,6 +9,7 @@ public sealed class ViewPage : DefaultPage
 	public required AssetCollection Collection { get; init; }
 	public required CollectionPath Path { get; init; }
 
+	public string? ClassFilter { get; init; }
 	public override string GetTitle() => Collection.Name;
 
 	public override void WriteInnerContent(TextWriter writer)
@@ -27,6 +28,40 @@ public sealed class ViewPage : DefaultPage
 		if (Collection.Count > 0)
 		{
 			new H2(writer).Close(Localization.Assets);
+			using (new Form(writer).WithAction(CollectionAPI.Urls.View).WithMethod("get").End())
+			{
+				new Input(writer)
+					.WithType("hidden")
+					.WithName(CollectionAPI.Path)
+					.WithValue(Path.ToJson().ToHtml())
+					.Close();
+
+				new Label(writer).WithFor("classFilter").WithClass("me-2").Close(Localization.Class);
+
+				using (new Select(writer)
+					.WithId("classFilter")
+					.WithName(CollectionAPI.Class)
+					.End())
+				{
+					new Option(writer)
+						.WithValue(string.Empty)
+						.MaybeWithSelected(string.IsNullOrEmpty(ClassFilter))
+						.Close(Localization.All);
+
+					foreach (string cn in Collection
+						.Select(a => a.ClassName)
+						.Distinct()
+						.Order())
+					{
+						new Option(writer)
+							.WithValue(cn)
+							.MaybeWithSelected(string.Equals(cn, ClassFilter, StringComparison.Ordinal))
+							.Close(cn);
+					}
+				}
+
+				new Button(writer).WithType("submit").WithClass("btn").Close(Localization.Filter);
+			}
 			using (new Table(writer).WithClass("table").End())
 			{
 				using (new Thead(writer).End())
@@ -42,6 +77,12 @@ public sealed class ViewPage : DefaultPage
 				{
 					foreach (IUnityObjectBase asset in Collection)
 					{
+						if (!string.IsNullOrEmpty(ClassFilter) &&
+							!string.Equals(asset.ClassName, ClassFilter, StringComparison.Ordinal))
+						{
+							continue;
+						}
+
 						using (new Tr(writer).End())
 						{
 							new Td(writer).Close(asset.PathID.ToString());