Add open all menu action

Services/LauncherController.cs

@@ -62,7 +62,7 @@ public sealed class LauncherController : IDisposable
             return;
         }
 
-        popup = new LauncherPopup(Config, LaunchItem, ShowSettings);
+        popup = new LauncherPopup(Config, LaunchItem, OpenAllItems, ShowSettings);
         popup.Closed += (_, _) => popup = null;
         popup.ShowNearTaskbar();
     }
@@ -126,13 +126,63 @@ public sealed class LauncherController : IDisposable
 
     private void LaunchItem(LauncherItem item)
     {
+        if (TryLaunchItem(item, out string? error))
+        {
+            popup?.Close();
+            return;
+        }
+
+        if (!string.IsNullOrWhiteSpace(error))
+        {
+            System.Windows.MessageBox.Show(error, "Taskbar Launcher");
+        }
+    }
+
+    private void OpenAllItems(LauncherItem menuItem)
+    {
+        List<string> failures = [];
+        int launchedCount = 0;
+
+        foreach (LauncherItem child in menuItem.Children)
+        {
+            if (child.Type == LauncherItemType.Menu || string.IsNullOrWhiteSpace(child.Target))
+            {
+                continue;
+            }
+
+            if (TryLaunchItem(child, out string? error))
+            {
+                launchedCount++;
+            }
+            else if (!string.IsNullOrWhiteSpace(error))
+            {
+                failures.Add(error);
+            }
+        }
+
+        popup?.Close();
+
+        if (failures.Count > 0)
+        {
+            string message = $"Opened {launchedCount} item(s), but {failures.Count} item(s) failed:\n\n" +
+                string.Join("\n\n", failures.Take(5));
+            System.Windows.MessageBox.Show(message, "Taskbar Launcher");
+        }
+    }
+
+    private static bool TryLaunchItem(LauncherItem item, out string? error)
+    {
+        error = null;
+
         if (item.Type == LauncherItemType.Menu || string.IsNullOrWhiteSpace(item.Target))
         {
-            return;
+            return false;
         }
 
         string target = Environment.ExpandEnvironmentVariables(item.Target);
 
+        try
+        {
             ProcessStartInfo startInfo = new()
             {
                 FileName = target,
@@ -142,6 +192,12 @@ public sealed class LauncherController : IDisposable
             };
 
             Process.Start(startInfo);
-        popup?.Close();
+            return true;
+        }
+        catch (Exception ex)
+        {
+            error = $"{item.Title}: {ex.Message}";
+            return false;
+        }
     }
 }

Views/LauncherPopup.xaml.cs

@@ -17,13 +17,15 @@ public partial class LauncherPopup : Window
 
     private readonly LauncherConfig config;
     private readonly Action<LauncherItem> launchItem;
+    private readonly Action<LauncherItem> openAllItems;
     private readonly Action showSettings;
 
-    public LauncherPopup(LauncherConfig config, Action<LauncherItem> launchItem, Action showSettings)
+    public LauncherPopup(LauncherConfig config, Action<LauncherItem> launchItem, Action<LauncherItem> openAllItems, Action showSettings)
     {
         InitializeComponent();
         this.config = config;
         this.launchItem = launchItem;
+        this.openAllItems = openAllItems;
         this.showSettings = showSettings;
         BuildItems();
         SizeChanged += (_, _) => QueueReposition();
@@ -102,7 +104,7 @@ public partial class LauncherPopup : Window
         {
             Expander expander = new()
             {
-                Header = item.Title,
+                Header = CreateMenuHeader(item),
                 IsExpanded = expandMenusByDefault,
                 Margin = new Thickness(depth * 12, 4, 0, 4)
             };
@@ -143,6 +145,34 @@ public partial class LauncherPopup : Window
         return button;
     }
 
+    private TextBlock CreateMenuHeader(LauncherItem item)
+    {
+        System.Windows.Controls.MenuItem openAllMenuItem = new()
+        {
+            Header = "Open All",
+            IsEnabled = item.Children.Any(IsLaunchable)
+        };
+        openAllMenuItem.Click += (_, e) =>
+        {
+            openAllItems(item);
+            e.Handled = true;
+        };
+
+        System.Windows.Controls.ContextMenu contextMenu = new();
+        contextMenu.Items.Add(openAllMenuItem);
+
+        return new TextBlock
+        {
+            Text = item.Title,
+            ContextMenu = contextMenu
+        };
+    }
+
+    private static bool IsLaunchable(LauncherItem item)
+    {
+        return item.Type != LauncherItemType.Menu && !string.IsNullOrWhiteSpace(item.Target);
+    }
+
     private void SearchBox_TextChanged(object sender, TextChangedEventArgs e)
     {
         string query = SearchBox.Text.Trim();