Add Open in Notepad++ and static Windows shell verbs without embedding IContextMenu on right-click.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/Explorer.App/GitChangesWindow.xaml

@@ -34,6 +34,9 @@
       <Button Content="Open in Cursor" MinWidth="120" Height="32"
               Command="{Binding OpenSelectedInCursorCommand}"
               IsEnabled="{Binding CanOpenInCursor}" Margin="0,0,8,8"/>
+      <Button Content="Open in Notepad++" MinWidth="140" Height="32"
+              Command="{Binding OpenSelectedInNotepadPlusPlusCommand}"
+              IsEnabled="{Binding CanOpenInCursor}" Margin="0,0,8,8"/>
       <Button Content="Stage" MinWidth="72" Height="32" Click="OnStage"
               IsEnabled="{Binding CanStage}" Margin="0,0,8,8"/>
       <Button Content="Unstage" MinWidth="72" Height="32" Click="OnUnstage"
@@ -58,6 +61,8 @@
           <MenuItem Header="View diff" Click="OnDiff" IsEnabled="{Binding CanDiff}"/>
           <MenuItem Header="Open in Cursor" Command="{Binding OpenSelectedInCursorCommand}"
                     IsEnabled="{Binding CanOpenInCursor}"/>
+          <MenuItem Header="Open in Notepad++" Command="{Binding OpenSelectedInNotepadPlusPlusCommand}"
+                    IsEnabled="{Binding CanOpenInCursor}"/>
           <Separator/>
           <MenuItem Header="Stage" Click="OnStage" IsEnabled="{Binding CanStage}"/>
           <MenuItem Header="Unstage" Click="OnUnstage" IsEnabled="{Binding CanUnstage}"/>

src/Explorer.App/MainWindow.xaml

@@ -26,7 +26,7 @@
   <Window.Resources>
     <ContextMenu x:Key="FolderListContextMenu" x:Shared="false">
       <MenuItem Header="Open" Click="OnCtxOpen"/>
-      <Separator/>
+      <Separator Tag="ShellVerbAnchor" Visibility="Collapsed"/>
       <MenuItem Header="Cut" Command="{Binding CutCommand}"/>
       <MenuItem Header="Copy" Command="{Binding CopyCommand}"/>
       <MenuItem Header="Paste" Command="{Binding PasteCommand}"/>
@@ -74,6 +74,8 @@
                 Visibility="{Binding ShowOpenTerminal, Converter={StaticResource BoolVis}}"/>
       <MenuItem Header="Open in Cursor" Command="{Binding OpenInCursorCommand}"
                 Visibility="{Binding ShowOpenInCursor, Converter={StaticResource BoolVis}}"/>
+      <MenuItem Header="Open in Notepad++" Command="{Binding OpenInNotepadPlusPlusCommand}"
+                Visibility="{Binding ShowOpenInNotepadPlusPlus, Converter={StaticResource BoolVis}}"/>
       <MenuItem Header="Add to Favorites" Click="OnAddFavorite"
                 Visibility="{Binding ShowAddFavorite, Converter={StaticResource BoolVis}}"/>
       <MenuItem Header="Remove from Favorites" Click="OnRemoveFavorite"
@@ -191,6 +193,8 @@
                     IsEnabled="{Binding ShowOpenTerminal}"/>
           <MenuItem Header="Open in _Cursor" Command="{Binding OpenInCursorCommand}"
                     IsEnabled="{Binding ShowOpenInCursor}"/>
+          <MenuItem Header="Open in _Notepad++" Command="{Binding OpenInNotepadPlusPlusCommand}"
+                    IsEnabled="{Binding ShowOpenInNotepadPlusPlus}"/>
         </MenuItem>
         <MenuItem Header="_Recycle Bin">
           <MenuItem Header="_Open Recycle Bin" Click="OnOpenRecycleBin"/>

src/Explorer.App/MainWindow.xaml.cs

@@ -8,6 +8,7 @@ using System.Windows.Input;
 using System.Windows.Media;
 using System.Windows.Threading;
 using Explorer.Domain;
+using Explorer.Domain.Abstractions;
 using Explorer.Presentation;
 using Explorer.Presentation.ViewModels;
 
@@ -651,6 +652,15 @@ public partial class MainWindow : Window
         if (sender is FrameworkElement { ContextMenu: { } menu })
         {
             menu.DataContext = DataContext;
+            try
+            {
+                FillShellContextVerbs(menu);
+            }
+            catch (Exception)
+            {
+                // Shell extras must not take down the Workbench menu.
+            }
+
             _ = FillRunProfileMenuAsync(menu);
         }
     }
@@ -1364,6 +1374,66 @@ public partial class MainWindow : Window
         dlg.ShowDialog();
     }
 
+    private void FillShellContextVerbs(ContextMenu menu)
+    {
+        const string anchor = "ShellVerbAnchor";
+        const string tagPrefix = "shell:";
+        for (var i = menu.Items.Count - 1; i >= 0; i--)
+        {
+            if (menu.Items[i] is FrameworkElement { Tag: string tag }
+                && tag.StartsWith(tagPrefix, StringComparison.Ordinal))
+            {
+                menu.Items.RemoveAt(i);
+            }
+        }
+
+        var anchorItem = menu.Items.OfType<Separator>().FirstOrDefault(item => Equals(item.Tag, anchor));
+        if (anchorItem is null)
+        {
+            return;
+        }
+
+        var verbs = Vm.ListShellContextVerbs();
+        anchorItem.Visibility = verbs.Count > 0 ? Visibility.Visible : Visibility.Collapsed;
+        if (verbs.Count == 0)
+        {
+            return;
+        }
+
+        var index = menu.Items.IndexOf(anchorItem) + 1;
+        foreach (var verb in verbs)
+        {
+            menu.Items.Insert(index++, BuildShellMenuItem(verb));
+        }
+    }
+
+    private MenuItem BuildShellMenuItem(ShellContextVerb verb)
+    {
+        var item = new MenuItem { Header = verb.Label, Tag = "shell:" + verb.Id };
+        if (verb.Children is { Count: > 0 })
+        {
+            foreach (var child in verb.Children)
+            {
+                item.Items.Add(BuildShellMenuItem(child));
+            }
+
+            return item;
+        }
+
+        item.Click += OnShellContextVerb;
+        return item;
+    }
+
+    private void OnShellContextVerb(object sender, RoutedEventArgs e)
+    {
+        if (sender is not MenuItem { Tag: string tag } || !tag.StartsWith("shell:", StringComparison.Ordinal))
+        {
+            return;
+        }
+
+        Vm.InvokeShellContextVerb(tag["shell:".Length..]);
+    }
+
     private async Task FillRunProfileMenuAsync(ContextMenu menu)
     {
         var host = menu.Items.OfType<MenuItem>().FirstOrDefault(i => Equals(i.Tag, "RunProfileMenu"));