Move command handling from main window to command implementations.

ILSpy/App.xaml.cs

@@ -43,6 +43,9 @@
 
 using TomsToolbox.Composition;
 using TomsToolbox.Wpf.Composition;
+using ICSharpCode.ILSpy.Themes;
+using System.Globalization;
+using System.Threading;
 
 namespace ICSharpCode.ILSpy
 {
@@ -75,25 +78,34 @@ public App()
 				SingleInstance.NewInstanceDetected += SingleInstance_NewInstanceDetected;
 			}
 
-			SharpTreeNode.SetImagesProvider(new WpfWindowsTreeNodeImagesProvider());
-
 			InitializeComponent();
 
-			Resources.RegisterDefaultStyles();
-
 			if (!Debugger.IsAttached)
 			{
 				AppDomain.CurrentDomain.UnhandledException += ShowErrorBox;
 				Dispatcher.CurrentDispatcher.UnhandledException += Dispatcher_UnhandledException;
 			}
+
 			TaskScheduler.UnobservedTaskException += DotNet40_UnobservedTaskException;
+
+			SharpTreeNode.SetImagesProvider(new WpfWindowsTreeNodeImagesProvider());
+
+			Resources.RegisterDefaultStyles();
+
 			InitializeMef().GetAwaiter().GetResult();
 
 			// Register the export provider so that it can be accessed from WPF/XAML components.
 			ExportProviderLocator.Register(ExportProvider);
 			// Add data templates registered via MEF.
 			Resources.MergedDictionaries.Add(DataTemplateManager.CreateDynamicDataTemplates(ExportProvider));
 
+			var sessionSettings = SettingsService.Instance.SessionSettings;
+			ThemeManager.Current.Theme = sessionSettings.Theme;
+			if (!string.IsNullOrEmpty(sessionSettings.CurrentCulture))
+			{
+				Thread.CurrentThread.CurrentUICulture = CultureInfo.DefaultThreadCurrentUICulture = new CultureInfo(sessionSettings.CurrentCulture);
+			}
+
 			EventManager.RegisterClassHandler(typeof(Window),
 											  Hyperlink.RequestNavigateEvent,
 											  new RequestNavigateEventHandler(Window_RequestNavigate));
@@ -109,9 +121,11 @@ public App()
 				string unknownArguments = string.Join(", ", CommandLineArguments.ArgumentsParser.RemainingArguments);
 				MessageBox.Show(unknownArguments, "ILSpy Unknown Command Line Arguments Passed");
 			}
+
+			SettingsService.Instance.AssemblyListManager.CreateDefaultAssemblyLists();
 		}
 
-		private static void SingleInstance_NewInstanceDetected(object sender, NewInstanceEventArgs e) => ExportProvider.GetExportedValue<AssemblyListPaneModel>().HandleSingleInstanceCommandLineArguments(e.Args).HandleExceptions();
+		private static void SingleInstance_NewInstanceDetected(object sender, NewInstanceEventArgs e) => ExportProvider.GetExportedValue<AssemblyTreeModel>().HandleSingleInstanceCommandLineArguments(e.Args).HandleExceptions();
 
 		static Assembly ResolvePluginDependencies(AssemblyLoadContext context, AssemblyName assemblyName)
 		{
@@ -203,7 +217,7 @@ protected override void OnStartup(StartupEventArgs e)
 
 			MainWindow = new MainWindow();
 			MainWindow.Loaded += (sender, args) => {
-				ExportProvider.GetExportedValue<AssemblyListPaneModel>().Initialize();
+				ExportProvider.GetExportedValue<AssemblyTreeModel>().Initialize();
 			};
 			MainWindow.Show();
 		}
@@ -266,7 +280,7 @@ internal static void UnhandledException(Exception exception)
 
 		void Window_RequestNavigate(object sender, RequestNavigateEventArgs e)
 		{
-			ExportProvider.GetExportedValue<AssemblyListPaneModel>().NavigateTo(e);
+			ExportProvider.GetExportedValue<AssemblyTreeModel>().NavigateTo(e);
 		}
 	}
 }

ILSpy/AssemblyTree/AssemblyListPane.xaml

@@ -8,7 +8,7 @@
 						xmlns:assemblyTree="clr-namespace:ICSharpCode.ILSpy.AssemblyTree"
 						xmlns:toms="urn:TomsToolbox"
 						mc:Ignorable="d" d:DesignHeight="450" d:DesignWidth="800"
-						d:DataContext="{d:DesignInstance assemblyTree:AssemblyListPaneModel}"
+						d:DataContext="{d:DesignInstance assemblyTree:AssemblyTreeModel}"
 						AutomationProperties.Name="Assemblies and Classes"
 						ShowRoot="False"
 						AllowDropOrder="True"

ILSpy/AssemblyTree/AssemblyListPane.xaml.cs

@@ -10,7 +10,7 @@ namespace ICSharpCode.ILSpy.AssemblyTree
 	/// <summary>
 	/// Interaction logic for AssemblyListPane.xaml
 	/// </summary>
-	[DataTemplate(typeof(AssemblyListPaneModel))]
+	[DataTemplate(typeof(AssemblyTreeModel))]
 	[PartCreationPolicy(CreationPolicy.NonShared)]
 	public partial class AssemblyListPane
 	{
@@ -27,7 +27,7 @@ protected override void OnPropertyChanged(DependencyPropertyChangedEventArgs e)
 
 			if (e.Property == DataContextProperty)
 			{
-				if (e.NewValue is not AssemblyListPaneModel model)
+				if (e.NewValue is not AssemblyTreeModel model)
 					return;
 
 				model.SetActiveView(this);

ILSpy/AssemblyTree/AssemblyListPaneModel.cs → ILSpy/AssemblyTree/AssemblyTreeModel.cs

@@ -45,7 +45,6 @@
 using ICSharpCode.Decompiler.TypeSystem.Implementation;
 using System.Reflection.Metadata;
 
-using ICSharpCode.ILSpyX.Extensions;
 using ICSharpCode.ILSpy.AppEnv;
 using ICSharpCode.ILSpy.Search;
 using ICSharpCode.Decompiler;
@@ -60,16 +59,16 @@ namespace ICSharpCode.ILSpy.AssemblyTree
 	[ExportToolPane]
 	[PartCreationPolicy(CreationPolicy.Shared)]
 	[Export]
-	public class AssemblyListPaneModel : ToolPaneModel
+	public class AssemblyTreeModel : ToolPaneModel
 	{
 		public const string PaneContentId = "assemblyListPane";
 
 		AssemblyListPane activeView;
 		AssemblyListTreeNode assemblyListTreeNode;
 
-		readonly NavigationHistoryService history = NavigationHistoryService.Instance;
+		readonly NavigationHistory<NavigationState> history = new();
 
-		public AssemblyListPaneModel()
+		public AssemblyTreeModel()
 		{
 			Title = Resources.Assemblies;
 			ContentId = PaneContentId;
@@ -795,6 +794,10 @@ public void NavigateHistory(bool forward)
 			DecompileSelectedNodes(newState.ViewState as DecompilerTextViewState, false);
 		}
 
+		public bool CanNavigateBack => history.CanNavigateBack;
+
+		public bool CanNavigateForward => history.CanNavigateForward;
+
 		internal void NavigateTo(RequestNavigateEventArgs e, bool recordHistory = true, bool inNewTabPage = false)
 		{
 			if (e.Uri.Scheme == "resource")
@@ -914,5 +917,16 @@ static void CollapseChildren(SharpTreeNode node)
 				child.IsExpanded = false;
 			}
 		}
+
+		public void OpenFiles(string[] fileNames, bool focusNode = true)
+		{
+			if (fileNames == null)
+				throw new ArgumentNullException(nameof(fileNames));
+
+			if (focusNode)
+				UnselectAll();
+
+			LoadAssemblies(fileNames, focusNode: focusNode);
+		}
 	}
 }

ILSpy/Commands/BrowseBackCommand.cs

@@ -19,6 +19,7 @@
 using System.ComponentModel.Composition;
 using System.Windows.Input;
 
+using ICSharpCode.ILSpy.AssemblyTree;
 using ICSharpCode.ILSpy.Properties;
 
 namespace ICSharpCode.ILSpy
@@ -27,9 +28,32 @@ namespace ICSharpCode.ILSpy
 	[PartCreationPolicy(CreationPolicy.Shared)]
 	sealed class BrowseBackCommand : CommandWrapper
 	{
-		public BrowseBackCommand()
+		readonly AssemblyTreeModel assemblyTreeModel;
+
+		[ImportingConstructor]
+		public BrowseBackCommand(AssemblyTreeModel assemblyTreeModel)
 			: base(NavigationCommands.BrowseBack)
 		{
+			this.assemblyTreeModel = assemblyTreeModel;
+		}
+
+		protected override void OnCanExecute(object sender, CanExecuteRoutedEventArgs e)
+		{
+			base.OnCanExecute(sender, e);
+
+			e.Handled = true;
+			e.CanExecute = assemblyTreeModel.CanNavigateBack;
+		}
+
+		protected override void OnExecute(object sender, ExecutedRoutedEventArgs e)
+		{
+			base.OnExecute(sender, e);
+
+			if (assemblyTreeModel.CanNavigateBack)
+			{
+				e.Handled = true;
+				assemblyTreeModel.NavigateHistory(false);
+			}
 		}
 	}
 }

ILSpy/Commands/BrowseForwardCommand.cs

@@ -19,6 +19,7 @@
 using System.ComponentModel.Composition;
 using System.Windows.Input;
 
+using ICSharpCode.ILSpy.AssemblyTree;
 using ICSharpCode.ILSpy.Properties;
 
 namespace ICSharpCode.ILSpy
@@ -27,9 +28,33 @@ namespace ICSharpCode.ILSpy
 	[PartCreationPolicy(CreationPolicy.Shared)]
 	sealed class BrowseForwardCommand : CommandWrapper
 	{
-		public BrowseForwardCommand()
+		private readonly AssemblyTreeModel assemblyTreeModel;
+
+		[ImportingConstructor]
+		public BrowseForwardCommand(AssemblyTreeModel assemblyTreeModel)
 			: base(NavigationCommands.BrowseForward)
 		{
+			this.assemblyTreeModel = assemblyTreeModel;
+		}
+
+		protected override void OnCanExecute(object sender, CanExecuteRoutedEventArgs e)
+		{
+			base.OnCanExecute(sender, e);
+
+			e.Handled = true;
+			e.CanExecute = assemblyTreeModel.CanNavigateForward;
+		}
+
+		protected override void OnExecute(object sender, ExecutedRoutedEventArgs e)
+		{
+			base.OnExecute(sender, e);
+
+			if (assemblyTreeModel.CanNavigateForward)
+			{
+				e.Handled = true;
+				assemblyTreeModel.NavigateHistory(true);
+			}
 		}
+
 	}
 }

ILSpy/Commands/CommandWrapper.cs

@@ -17,6 +17,7 @@
 // DEALINGS IN THE SOFTWARE.
 
 using System;
+using System.Windows;
 using System.Windows.Input;
 
 namespace ICSharpCode.ILSpy
@@ -28,15 +29,16 @@ class CommandWrapper : ICommand
 		public CommandWrapper(ICommand wrappedCommand)
 		{
 			this.wrappedCommand = wrappedCommand;
+
+			Application.Current.MainWindow?.CommandBindings.Add(new CommandBinding(wrappedCommand, OnExecute, OnCanExecute));
 		}
 
 		public static ICommand Unwrap(ICommand command)
 		{
-			CommandWrapper w = command as CommandWrapper;
-			if (w != null)
+			if (command is CommandWrapper w)
 				return w.wrappedCommand;
-			else
-				return command;
+
+			return command;
 		}
 
 		public event EventHandler CanExecuteChanged {
@@ -53,5 +55,14 @@ public bool CanExecute(object parameter)
 		{
 			return wrappedCommand.CanExecute(parameter);
 		}
+
+		protected virtual void OnExecute(object sender, ExecutedRoutedEventArgs e)
+		{
+		}
+
+		protected virtual void OnCanExecute(object sender, CanExecuteRoutedEventArgs e)
+		{
+			e.CanExecute = true;
+		}
 	}
 }

ILSpy/Commands/OpenCommand.cs

@@ -19,18 +19,42 @@
 using System.ComponentModel.Composition;
 using System.Windows.Input;
 
+using ICSharpCode.ILSpy.AssemblyTree;
 using ICSharpCode.ILSpy.Properties;
 
+using Microsoft.Win32;
+
 namespace ICSharpCode.ILSpy
 {
 	[ExportToolbarCommand(ToolTip = nameof(Resources.Open), ToolbarIcon = "Images/Open", ToolbarCategory = nameof(Resources.Open), ToolbarOrder = 0)]
 	[ExportMainMenuCommand(ParentMenuID = nameof(Resources._File), Header = nameof(Resources._Open), MenuIcon = "Images/Open", MenuCategory = nameof(Resources.Open), MenuOrder = 0)]
 	[PartCreationPolicy(CreationPolicy.Shared)]
 	sealed class OpenCommand : CommandWrapper
 	{
-		public OpenCommand()
+		private readonly AssemblyTreeModel assemblyTreeModel;
+
+		[ImportingConstructor]
+		public OpenCommand(AssemblyTreeModel assemblyTreeModel)
 			: base(ApplicationCommands.Open)
 		{
+			this.assemblyTreeModel = assemblyTreeModel;
+		}
+
+		protected override void OnExecute(object sender, ExecutedRoutedEventArgs e)
+		{
+			base.OnExecute(sender, e);
+
+			e.Handled = true;
+			OpenFileDialog dlg = new OpenFileDialog {
+				Filter = ".NET assemblies|*.dll;*.exe;*.winmd;*.wasm|Nuget Packages (*.nupkg)|*.nupkg|Portable Program Database (*.pdb)|*.pdb|All files|*.*",
+				Multiselect = true,
+				RestoreDirectory = true
+			};
+
+			if (dlg.ShowDialog() == true)
+			{
+				assemblyTreeModel.OpenFiles(dlg.FileNames);
+			}
 		}
 	}
 }

ILSpy/Commands/OpenFromGacCommand.cs

@@ -19,6 +19,7 @@
 using System.ComponentModel.Composition;
 
 using ICSharpCode.ILSpy.AppEnv;
+using ICSharpCode.ILSpy.AssemblyTree;
 using ICSharpCode.ILSpy.Properties;
 
 namespace ICSharpCode.ILSpy
@@ -27,17 +28,29 @@ namespace ICSharpCode.ILSpy
 	[PartCreationPolicy(CreationPolicy.Shared)]
 	sealed class OpenFromGacCommand : SimpleCommand
 	{
+		private readonly AssemblyTreeModel assemblyTreeModel;
+
+		[ImportingConstructor]
+		public OpenFromGacCommand(AssemblyTreeModel assemblyTreeModel)
+		{
+			this.assemblyTreeModel = assemblyTreeModel;
+		}
+
 		public override bool CanExecute(object parameter)
 		{
 			return AppEnvironment.IsWindows;
 		}
 
 		public override void Execute(object parameter)
 		{
-			OpenFromGacDialog dlg = new OpenFromGacDialog();
-			dlg.Owner = MainWindow.Instance;
+			OpenFromGacDialog dlg = new OpenFromGacDialog {
+				Owner = MainWindow.Instance
+			};
+
 			if (dlg.ShowDialog() == true)
-				MainWindow.Instance.OpenFiles(dlg.SelectedFileNames);
+			{
+				assemblyTreeModel.OpenFiles(dlg.SelectedFileNames);
+			}
 		}
 	}
 }