Avalonia: Feature parity with WinUI

src/UniGetUI.Avalonia/App.axaml.cs

@@ -5,6 +5,7 @@
 using Avalonia.Markup.Xaml.Styling;
 using Avalonia.Platform;
 using Avalonia.Styling;
+using Avalonia.Threading;
 using UniGetUI.Avalonia.Infrastructure;
 using UniGetUI.Avalonia.Views;
 using UniGetUI.Avalonia.Views.DialogPages;
@@ -35,6 +36,21 @@ public override void Initialize()
 
     public override void OnFrameworkInitializationCompleted()
     {
+        if (OperatingSystem.IsWindows())
+        {
+            // Safety net for NativeWebView (WebView2) initialization failures thrown
+            // asynchronously on the dispatcher. Without this the app crashes; with it
+            // the Help page shows a fallback "Open in browser" button.
+            Dispatcher.UIThread.UnhandledException += (_, e) =>
+            {
+                if (e.Exception is InvalidOperationException { Message: var msg }
+                    && msg.Contains("child window for native control host"))
+                {
+                    e.Handled = true;
+                }
+            };
+        }
+
         if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
         {
             if (OperatingSystem.IsMacOS())

src/UniGetUI.Avalonia/Infrastructure/AvaloniaOperationRegistry.cs

@@ -93,6 +93,43 @@ public static void Add(AbstractOperation op)
         };
     }
 
+    public static void RetryFailed()
+    {
+        var failed = OperationViewModels
+            .Where(vm => vm.Operation.Status is OperationStatus.Failed)
+            .ToList();
+        foreach (var vm in failed)
+            vm.Operation.Retry(AbstractOperation.RetryMode.Retry);
+    }
+
+    public static void ClearSuccessful()
+    {
+        var succeeded = OperationViewModels
+            .Where(vm => vm.Operation.Status is OperationStatus.Succeeded)
+            .ToList();
+        foreach (var vm in succeeded)
+            Remove(vm);
+    }
+
+    public static void ClearFinished()
+    {
+        var finished = OperationViewModels
+            .Where(vm => vm.Operation.Status
+                is OperationStatus.Succeeded or OperationStatus.Failed or OperationStatus.Canceled)
+            .ToList();
+        foreach (var vm in finished)
+            Remove(vm);
+    }
+
+    public static void CancelAll()
+    {
+        var active = OperationViewModels
+            .Where(vm => vm.Operation.Status is OperationStatus.Running or OperationStatus.InQueue)
+            .ToList();
+        foreach (var vm in active)
+            vm.Operation.Cancel();
+    }
+
     /// <summary>Remove a view-model (and its backing operation) from the panel. Called by the Close button.</summary>
     public static void Remove(OperationViewModel vm)
     {

src/UniGetUI.Avalonia/Models/PackageCollections.cs

@@ -1,7 +1,13 @@
+using System.Collections.Concurrent;
 using System.Collections.ObjectModel;
 using System.ComponentModel;
+using System.Net.Http;
 using Avalonia.Collections;
+using Avalonia.Media.Imaging;
+using Avalonia.Threading;
 using UniGetUI.Avalonia.ViewModels.Pages;
+using UniGetUI.Core.SettingsEngine;
+using UniGetUI.Core.Tools;
 using UniGetUI.Interface.Enums;
 using UniGetUI.PackageEngine.Interfaces;
 
@@ -13,6 +19,12 @@ namespace UniGetUI.PackageEngine.PackageClasses;
 /// </summary>
 public sealed class PackageWrapper : INotifyPropertyChanged, IDisposable
 {
+    private static readonly HttpClient _iconHttpClient = new(CoreTools.GenericHttpClientParameters)
+    {
+        Timeout = TimeSpan.FromSeconds(8),
+    };
+    private static readonly ConcurrentDictionary<long, Bitmap?> _iconCache = new();
+
     public IPackage Package { get; }
     public PackageWrapper Self => this;
     public int Index { get; set; }
@@ -21,6 +33,19 @@ public sealed class PackageWrapper : INotifyPropertyChanged, IDisposable
 
     private readonly PackagesPageViewModel _page;
 
+    private Bitmap? _iconBitmap;
+    public Bitmap? IconBitmap
+    {
+        get => _iconBitmap;
+        private set
+        {
+            _iconBitmap = value;
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(IconBitmap)));
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(HasCustomIcon)));
+        }
+    }
+    public bool HasCustomIcon => _iconBitmap is not null;
+
     public bool IsChecked
     {
         get => Package.IsChecked;
@@ -35,6 +60,8 @@ public bool IsChecked
     public string VersionComboString { get; }
     public string ListedNameTooltip { get; private set; } = "";
     public float ListedOpacity { get; private set; } = 1.0f;
+    public string TagIconPath { get; private set; } = "";
+    public bool TagIconVisible { get; private set; }
 
     public string SourceIconPath => IconTypeToSvgPath(Package.Source.IconId);
 
@@ -63,6 +90,43 @@ public PackageWrapper(IPackage package, PackagesPageViewModel page)
 
         Package.PropertyChanged += Package_PropertyChanged;
         UpdateDisplayState();
+
+        if (!Settings.Get(Settings.K.DisableIconsOnPackageLists))
+            _ = LoadIconAsync();
+    }
+
+    private async Task LoadIconAsync()
+    {
+        long hash = Package.GetHash();
+        if (_iconCache.TryGetValue(hash, out Bitmap? cached))
+        {
+            if (cached is not null)
+                IconBitmap = cached;
+            return;
+        }
+
+        try
+        {
+            var uri = Package.GetIconUrlIfAny();
+            if (uri is null) { _iconCache[hash] = null; return; }
+
+            Bitmap bitmap;
+            if (uri.IsFile)
+            {
+                bitmap = new Bitmap(uri.LocalPath);
+            }
+            else if (uri.Scheme is "http" or "https")
+            {
+                var bytes = await _iconHttpClient.GetByteArrayAsync(uri);
+                using var ms = new MemoryStream(bytes);
+                bitmap = new Bitmap(ms);
+            }
+            else { _iconCache[hash] = null; return; }
+
+            _iconCache[hash] = bitmap;
+            await Dispatcher.UIThread.InvokeAsync(() => IconBitmap = bitmap);
+        }
+        catch { _iconCache[hash] = null; }
     }
 
     private void Package_PropertyChanged(object? sender, PropertyChangedEventArgs e)
@@ -72,6 +136,8 @@ private void Package_PropertyChanged(object? sender, PropertyChangedEventArgs e)
             UpdateDisplayState();
             PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(ListedOpacity)));
             PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(ListedNameTooltip)));
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(TagIconPath)));
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(TagIconVisible)));
         }
         else if (e.PropertyName == nameof(Package.IsChecked))
         {
@@ -91,6 +157,21 @@ private void UpdateDisplayState()
             _ => 1.0f,
         };
         ListedNameTooltip = Package.Name;
+
+        string tagName = Package.Tag switch
+        {
+            PackageTag.AlreadyInstalled => "installed_filled",
+            PackageTag.IsUpgradable => "upgradable_filled",
+            PackageTag.Pinned => "pin_filled",
+            PackageTag.OnQueue => "sandclock",
+            PackageTag.BeingProcessed => "loading_filled",
+            PackageTag.Failed => "warning_filled",
+            _ => "",
+        };
+        TagIconVisible = tagName.Length > 0;
+        TagIconPath = TagIconVisible
+            ? $"avares://UniGetUI.Avalonia/Assets/Symbols/{tagName}.svg"
+            : "";
     }
 
     public void Dispose()

src/UniGetUI.Avalonia/UniGetUI.Avalonia.csproj

@@ -20,6 +20,7 @@
         <AssemblyName>UniGetUI.Avalonia</AssemblyName>
         <ApplicationIcon>..\UniGetUI\icon.ico</ApplicationIcon>
         <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
+        <ApplicationManifest Condition="$([MSBuild]::IsOSPlatform('Windows'))">app.manifest</ApplicationManifest>
     </PropertyGroup>
 
     <PropertyGroup Condition="'$(EnableAvaloniaDiagnostics)' == 'true'">

src/UniGetUI.Avalonia/ViewModels/DialogPages/InstallOptionsViewModel.cs

@@ -123,10 +123,10 @@
     [ObservableProperty] private bool _skipMinorChecked;
     [ObservableProperty] private bool _autoUpdateChecked;
 
     partial void OnAdminCheckedChanged(bool _) => Refresh();
     partial void OnInteractiveCheckedChanged(bool _) => Refresh();
     partial void OnSkipHashCheckedChanged(bool _) => Refresh();
     partial void OnSelectedVersionChanged(string? _) => Refresh();
 
     // ── Architecture / Scope / Location tab ───────────────────────────────────
     [ObservableProperty] private bool _archEnabled;
@@ -140,17 +140,17 @@
     [ObservableProperty] private string _locationText = "";
     [ObservableProperty] private bool _locationEnabled;
 
     partial void OnSelectedArchChanged(string? _) => Refresh();
     partial void OnSelectedScopeChanged(string? _) => Refresh();
 
     // ── CLI params tab ────────────────────────────────────────────────────────
     [ObservableProperty] private string _paramsInstall = "";
     [ObservableProperty] private string _paramsUpdate = "";
     [ObservableProperty] private string _paramsUninstall = "";
 
     partial void OnParamsInstallChanged(string _) => Refresh();
     partial void OnParamsUpdateChanged(string _) => Refresh();
     partial void OnParamsUninstallChanged(string _) => Refresh();
 
     // ── Pre/Post commands tab ─────────────────────────────────────────────────
     [ObservableProperty] private string _preInstallText = "";
@@ -305,6 +305,10 @@
     }
 
     // ── Commands ──────────────────────────────────────────────────────────────
+
+    /// <summary>Captures the current UI state into the options object without closing.</summary>
+    public void ApplyChanges() => ApplyToOptions();
+
     [RelayCommand]
     private void Save()
     {

src/UniGetUI.Avalonia/ViewModels/DialogPages/OperationOutputViewModel.cs

@@ -1,16 +1,40 @@
+using System.Collections.ObjectModel;
+using Avalonia.Media;
+using Avalonia.Threading;
 using CommunityToolkit.Mvvm.ComponentModel;
+using UniGetUI.Avalonia.ViewModels.Pages.LogPages;
 using UniGetUI.PackageOperations;
 
 namespace UniGetUI.Avalonia.ViewModels.DialogPages;
 
 public partial class OperationOutputViewModel : ObservableObject
 {
     [ObservableProperty] private string _title = "";
-    [ObservableProperty] private string _outputText = "";
+    public ObservableCollection<LogLineItem> OutputLines { get; } = new();
+
+    private static readonly IBrush _errorBrush = new SolidColorBrush(Color.Parse("#FF6B6B"));
+    private static readonly IBrush _debugBrush = new SolidColorBrush(Color.Parse("#888888"));
+    private static readonly IBrush _normalBrush = Brushes.White;
 
     public OperationOutputViewModel(AbstractOperation operation)
     {
         Title = operation.Metadata.Title;
-        OutputText = string.Join("\n", operation.GetOutput().Select(x => x.Item1));
+
+        foreach (var (text, type) in operation.GetOutput())
+            OutputLines.Add(MakeLine(text, type));
+
+        operation.LogLineAdded += (_, ev) =>
+            Dispatcher.UIThread.Post(() => OutputLines.Add(MakeLine(ev.Item1, ev.Item2)));
+    }
+
+    private LogLineItem MakeLine(string text, AbstractOperation.LineType type)
+    {
+        IBrush brush = type switch
+        {
+            AbstractOperation.LineType.Error => _errorBrush,
+            AbstractOperation.LineType.VerboseDetails => _debugBrush,
+            _ => _normalBrush,
+        };
+        return new LogLineItem(text, brush);
     }
 }

src/UniGetUI.Avalonia/ViewModels/MainWindowViewModel.cs

@@ -64,6 +64,24 @@ public partial class MainWindowViewModel : ViewModelBase
     [ObservableProperty]
     private bool _operationsPanelVisible;
 
+    [ObservableProperty]
+    private bool _operationsPanelExpanded = true;
+
+    [RelayCommand]
+    private void ToggleOperationsPanel() => OperationsPanelExpanded = !OperationsPanelExpanded;
+
+    [RelayCommand]
+    private void RetryFailedOperations() => AvaloniaOperationRegistry.RetryFailed();
+
+    [RelayCommand]
+    private void ClearSuccessfulOperations() => AvaloniaOperationRegistry.ClearSuccessful();
+
+    [RelayCommand]
+    private void ClearFinishedOperations() => AvaloniaOperationRegistry.ClearFinished();
+
+    [RelayCommand]
+    private void CancelAllOperations() => AvaloniaOperationRegistry.CancelAll();
+
     // ─── Sidebar ─────────────────────────────────────────────────────────────
     public SidebarViewModel Sidebar { get; } = new();
 

src/UniGetUI.Avalonia/ViewModels/Pages/SettingsPages/BackupViewModel.cs

@@ -224,6 +224,16 @@ private async Task DoCloudBackup()
     {
         _isLoading = true;
         UpdateCloudControlsEnabled();
+        try { await DoCloudBackupStatic(); }
+        finally
+        {
+            _isLoading = false;
+            UpdateCloudControlsEnabled();
+        }
+    }
+
+    public static async Task DoCloudBackupStatic()
+    {
         try
         {
             var packages = InstalledPackagesLoader.Instance?.Packages.ToList() ?? [];
@@ -236,11 +246,6 @@ private async Task DoCloudBackup()
             Logger.Error("An error occurred while performing a CLOUD backup:");
             Logger.Error(ex);
         }
-        finally
-        {
-            _isLoading = false;
-            UpdateCloudControlsEnabled();
-        }
     }
 
     [RelayCommand]