Polish launcher keyboard navigation

README.md

@@ -13,6 +13,7 @@ Download the compiled Windows release from:
 - System tray launcher
 - Global hotkey, default `Ctrl+Alt+Space`
 - Search/filter in the launcher popup with parent menu context
+- Keyboard navigation in the launcher popup
 - Recent items section for quickly relaunching entries
 - Nested menus, drag/drop ordering, and drag/drop item creation in Settings
 - Right-click launcher entries to edit them in Settings

TaskbarLauncher.csproj

@@ -12,8 +12,8 @@
     <Authors>Ray Berezowski</Authors>
     <ApplicationIcon>Assets\AppIcon.ico</ApplicationIcon>
     <Version>1.0.1</Version>
-    <AssemblyVersion>1.0.1.14</AssemblyVersion>
-    <FileVersion>1.0.1.14</FileVersion>
+    <AssemblyVersion>1.0.1.15</AssemblyVersion>
+    <FileVersion>1.0.1.15</FileVersion>
     <InformationalVersion>1.0.1</InformationalVersion>
   </PropertyGroup>
 

Views/LauncherPopup.xaml.cs

@@ -164,19 +164,7 @@ public partial class LauncherPopup : Window
             button.ContextMenu = CreateItemContextMenu(item);
         }
 
-        button.KeyDown += (_, e) =>
-        {
-            if (e.Key == Key.Enter)
-            {
-                launchItem(item);
-                e.Handled = true;
-            }
-            else if (e.Key == Key.Escape)
-            {
-                Close();
-                e.Handled = true;
-            }
-        };
+        button.KeyDown += LaunchButton_KeyDown;
         visibleLaunchButtons.Add(button);
         return button;
     }
@@ -356,19 +344,7 @@ public partial class LauncherPopup : Window
         };
 
         button.Click += (_, _) => launchItem(match.Item);
-        button.KeyDown += (_, e) =>
-        {
-            if (e.Key == Key.Enter)
-            {
-                launchItem(match.Item);
-                e.Handled = true;
-            }
-            else if (e.Key == Key.Escape)
-            {
-                Close();
-                e.Handled = true;
-            }
-        };
+        button.KeyDown += LaunchButton_KeyDown;
 
         visibleLaunchButtons.Add(button);
         return button;
@@ -437,14 +413,112 @@ public partial class LauncherPopup : Window
             return;
         }
 
-        if (e.Key == Key.Down && visibleLaunchButtons.FirstOrDefault() is System.Windows.Controls.Button firstButton)
+        if (e.Key == Key.Down)
         {
-            Keyboard.ClearFocus();
-            firstButton.Focus();
+            FocusLaunchButton(0);
+            e.Handled = true;
+            return;
+        }
+
+        if (e.Key == Key.Up)
+        {
+            FocusLaunchButton(visibleLaunchButtons.Count - 1);
+            e.Handled = true;
+            return;
+        }
+
+        if (e.Key == Key.Home)
+        {
+            SearchBox.CaretIndex = 0;
+            e.Handled = true;
+            return;
+        }
+
+        if (e.Key == Key.End)
+        {
+            SearchBox.CaretIndex = SearchBox.Text.Length;
             e.Handled = true;
         }
     }
 
+    private void LaunchButton_KeyDown(object sender, System.Windows.Input.KeyEventArgs e)
+    {
+        if (sender is not System.Windows.Controls.Button button)
+        {
+            return;
+        }
+
+        if (e.Key == Key.Enter && button.Tag is LauncherItem item)
+        {
+            launchItem(item);
+            e.Handled = true;
+            return;
+        }
+
+        if (e.Key == Key.Escape)
+        {
+            Close();
+            e.Handled = true;
+            return;
+        }
+
+        int index = visibleLaunchButtons.IndexOf(button);
+        if (index < 0)
+        {
+            return;
+        }
+
+        if (e.Key == Key.Down)
+        {
+            FocusLaunchButton(index + 1);
+            e.Handled = true;
+            return;
+        }
+
+        if (e.Key == Key.Up)
+        {
+            if (index == 0)
+            {
+                SearchBox.Focus();
+                SearchBox.CaretIndex = SearchBox.Text.Length;
+            }
+            else
+            {
+                FocusLaunchButton(index - 1);
+            }
+
+            e.Handled = true;
+            return;
+        }
+
+        if (e.Key == Key.Home)
+        {
+            FocusLaunchButton(0);
+            e.Handled = true;
+            return;
+        }
+
+        if (e.Key == Key.End)
+        {
+            FocusLaunchButton(visibleLaunchButtons.Count - 1);
+            e.Handled = true;
+        }
+    }
+
+    private void FocusLaunchButton(int index)
+    {
+        if (visibleLaunchButtons.Count == 0)
+        {
+            return;
+        }
+
+        int clampedIndex = Math.Clamp(index, 0, visibleLaunchButtons.Count - 1);
+        System.Windows.Controls.Button button = visibleLaunchButtons[clampedIndex];
+        Keyboard.ClearFocus();
+        button.Focus();
+        button.BringIntoView();
+    }
+
     protected override void OnKeyDown(System.Windows.Input.KeyEventArgs e)
     {
         if (e.Key == Key.Escape)

docs/INSTALL.md

@@ -28,6 +28,8 @@ Recently launched entries appear in the launcher popup under **Recent**.
 
 Search results include the parent menu path when an item is inside a menu.
 
+Use arrow keys, Home, End, Enter, and Escape to navigate the launcher popup from the keyboard.
+
 ## Configure
 
 Open the tray menu and choose **Settings**.