Initial Implementation

src/Ryujinx.UI.Common/App/ApplicationLibrary.cs

@@ -41,6 +41,7 @@ namespace Ryujinx.UI.App.Common
         private readonly byte[] _ncaIcon;
         private readonly byte[] _nroIcon;
         private readonly byte[] _nsoIcon;
+        private readonly byte[] _folderIcon;
 
         private readonly VirtualFileSystem _virtualFileSystem;
         private Language _desiredTitleLanguage;
@@ -58,6 +59,7 @@ namespace Ryujinx.UI.App.Common
             _ncaIcon = GetResourceBytes("Ryujinx.UI.Common.Resources.Icon_NCA.png");
             _nroIcon = GetResourceBytes("Ryujinx.UI.Common.Resources.Icon_NRO.png");
             _nsoIcon = GetResourceBytes("Ryujinx.UI.Common.Resources.Icon_NSO.png");
+            _folderIcon = GetResourceBytes("Ryujinx.UI.Common.Resources.Icon_Folder.png");
         }
 
         private static byte[] GetResourceBytes(string resourceName)
@@ -113,7 +115,31 @@ namespace Ryujinx.UI.App.Common
 
                     try
                     {
-                        IEnumerable<string> files = Directory.EnumerateFiles(appDir, "*", SearchOption.AllDirectories).Where(file =>
+                        IEnumerable<string> folders = Directory.EnumerateDirectories(appDir, "*", SearchOption.TopDirectoryOnly);
+                        foreach (string folder in folders)
+                        {
+                            if (_cancellationToken.Token.IsCancellationRequested)
+                            {
+                                return;
+                            }
+
+                            var fileInfo = new FileInfo(folder);
+
+                            var fullPath = fileInfo.ResolveLinkTarget(true)?.FullName ?? fileInfo.FullName;
+                            ApplicationData folderData = new()
+                            {
+                                TitleName = fileInfo.Name,
+                                FileExtension = "Folder",
+                                Path = fullPath,
+                                Icon = _folderIcon,
+                            };
+                            OnApplicationAdded(new ApplicationAddedEventArgs
+                            {
+                                AppData = folderData,
+                            });
+                        }
+
+                        IEnumerable<string> files = Directory.EnumerateFiles(appDir, "*", SearchOption.TopDirectoryOnly).Where(file =>
                         {
                             return
                             (Path.GetExtension(file).ToLower() is ".nsp" && ConfigurationState.Instance.UI.ShownFileTypes.NSP.Value) ||
@@ -163,7 +189,26 @@ namespace Ryujinx.UI.App.Common
                         return;
                     }
 
-                    long fileSize = new FileInfo(applicationPath).Length;
+                    var fileInfo = new FileInfo(applicationPath);
+
+                    if ((fileInfo.Attributes & FileAttributes.Directory) == FileAttributes.Directory)
+                    {
+                        Console.WriteLine($"Found directory 2: {fileInfo.Name}");
+                        ApplicationData folder = new()
+                        {
+                            TitleName = fileInfo.Name,
+                            FileExtension = "Folder",
+                            Developer = "null",
+                            Path = applicationPath,
+                            Icon = _nsoIcon,
+                        };
+                        OnApplicationAdded(new ApplicationAddedEventArgs
+                        {
+                            AppData = folder,
+                        });
+                    }
+
+                    long fileSize = fileInfo.Length;
                     string titleName = "Unknown";
                     string titleId = "0000000000000000";
                     string developer = "Unknown";

src/Ryujinx.UI.Common/Ryujinx.UI.Common.csproj

@@ -15,6 +15,7 @@
     <None Remove="Resources\Icon_NSO.png" />
     <None Remove="Resources\Icon_NSP.png" />
     <None Remove="Resources\Icon_XCI.png" />
+    <None Remove="Resources\Icon_Folder.png" />
     <None Remove="Resources\Logo_Amiibo.png" />
     <None Remove="Resources\Logo_Discord.png" />
     <None Remove="Resources\Logo_GitHub.png" />
@@ -33,6 +34,7 @@
     <EmbeddedResource Include="Resources\Icon_NSO.png" />
     <EmbeddedResource Include="Resources\Icon_NSP.png" />
     <EmbeddedResource Include="Resources\Icon_XCI.png" />
+    <EmbeddedResource Include="Resources\Icon_Folder.png" />
     <EmbeddedResource Include="Resources\Logo_Amiibo.png" />
     <EmbeddedResource Include="Resources\Logo_Ryujinx.png" />
     <EmbeddedResource Include="Resources\Logo_Discord_Dark.png" />

src/Ryujinx/UI/Helpers/Glyph.cs

@@ -4,6 +4,7 @@ namespace Ryujinx.Ava.UI.Helpers
     {
         List,
         Grid,
+        Back,
         Chip,
     }
 }

src/Ryujinx/UI/Helpers/GlyphValueConverter.cs

@@ -13,6 +13,7 @@ namespace Ryujinx.Ava.UI.Helpers
         {
             { Glyph.List, char.ConvertFromUtf32((int)Symbol.List) },
             { Glyph.Grid, char.ConvertFromUtf32((int)Symbol.ViewAll) },
+            { Glyph.Back, char.ConvertFromUtf32((int)Symbol.Back) },
             { Glyph.Chip, char.ConvertFromUtf32(59748) },
         };
 

src/Ryujinx/UI/ViewModels/MainWindowViewModel.cs

@@ -51,6 +51,7 @@ namespace Ryujinx.Ava.UI.ViewModels
         private const int HotKeyPressDelayMs = 500;
 
         private ObservableCollection<ApplicationData> _applications;
+        private Queue<string> _pathHistory;
         private string _aspectStatusText;
 
         private string _loadHeading;
@@ -120,6 +121,7 @@ namespace Ryujinx.Ava.UI.ViewModels
                 .Bind(out _appsObservableList).AsObservableList();
 
             _rendererWaitEvent = new AutoResetEvent(false);
+            _pathHistory = new Queue<string>();
 
             if (Program.PreviewerDetached)
             {
@@ -1281,6 +1283,34 @@ namespace Ryujinx.Ava.UI.ViewModels
             ShowConsole = !ShowConsole;
         }
 
+        public void OpenFolder(string path)
+        {
+            _pathHistory.Enqueue(path);
+            Applications.Clear();
+            List<string> SearchPaths = new List<string>();
+            SearchPaths.Add(path);
+            ApplicationLibrary.LoadApplications(SearchPaths, ConfigurationState.Instance.System.Language);
+        }
+
+        public void NavigateBack()
+        {
+            if (_pathHistory.Count != 0)
+            {
+                string path = _pathHistory.Dequeue();
+                Applications.Clear();
+                if (_pathHistory.Count == 0)
+                {
+                    ApplicationLibrary.LoadApplications(ConfigurationState.Instance.UI.GameDirs, ConfigurationState.Instance.System.Language);
+                }
+                else
+                {
+                    List<string> SearchPaths = new List<string>();
+                    SearchPaths.Add(path);
+                    ApplicationLibrary.LoadApplications(SearchPaths, ConfigurationState.Instance.System.Language);
+                }
+            }
+        }
+
         public void SetListMode()
         {
             Glyph = Glyph.List;

src/Ryujinx/UI/Views/Main/MainViewControls.axaml

@@ -18,6 +18,19 @@
         Margin="0,0,0,5"
         Height="35"
         HorizontalAlignment="Stretch">
+        <Button
+            Width="80"
+            MinWidth="80"
+            Margin="5,2,0,2"
+            VerticalAlignment="Stretch"
+            Command="{Binding NavigateBack}">
+            <ui:FontIcon
+                Margin="0"
+                HorizontalAlignment="Stretch"
+                VerticalAlignment="Center"
+                FontFamily="avares://FluentAvalonia/Fonts#Symbols"
+                Glyph="{helpers:GlyphValueConverter Back}" />
+        </Button>
         <Button
             Width="40"
             MinWidth="40"

src/Ryujinx/UI/Windows/MainWindow.axaml.cs

@@ -137,6 +137,11 @@ namespace Ryujinx.Ava.UI.Windows
         {
             if (args.Application != null)
             {
+                if (args.Application.FileExtension == "Folder")
+                {
+                    ViewModel.OpenFolder(args.Application.Path);
+                    return;
+                }
                 ViewModel.SelectedIcon = args.Application.Icon;
 
                 string path = new FileInfo(args.Application.Path).FullName;