[TUI] Add main window.

Aaru.Tui/ViewModels/Windows/MainWindowViewModel.cs

@@ -0,0 +1,45 @@
+using System.Collections.ObjectModel;
+using System.Reflection;
+using System.Windows.Input;
+using Avalonia;
+using Avalonia.Controls.ApplicationLifetimes;
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
+
+namespace Aaru.Tui.ViewModels.Windows;
+
+public sealed class MainWindowViewModel : ViewModelBase
+{
+    [ObservableProperty]
+    ObservableCollection<string> _files = [];
+    [ObservableProperty]
+    public string _informationalVersion;
+
+    public MainWindowViewModel()
+    {
+        ExitCommand = new RelayCommand(Exit);
+
+        InformationalVersion =
+            Assembly.GetExecutingAssembly()
+                    .GetCustomAttribute<AssemblyInformationalVersionAttribute>()
+                   ?.InformationalVersion ??
+            "?.?.?";
+    }
+
+    public ICommand ExitCommand { get; }
+
+    void Exit()
+    {
+        var lifetime = Application.Current!.ApplicationLifetime as IControlledApplicationLifetime;
+        lifetime!.Shutdown();
+    }
+
+    public void LoadComplete()
+    {
+        Files.Add("..");
+
+        foreach(string file in
+                Directory.GetFiles(Directory.GetCurrentDirectory(), "*.*", SearchOption.TopDirectoryOnly))
+            Files.Add(Path.GetFileName(file));
+    }
+}