menu performance

src/Misc/MainForm.cs

@@ -13,11 +13,13 @@ using WpfControls = System.Windows.Controls;
 
 using static mpvnet.Native;
 using static mpvnet.Global;
+using System.Threading;
 
 namespace mpvnet
 {
     public partial class MainForm : Form
     {
+        public AutoResetEvent MenuAutoResetEvent { get; } = new AutoResetEvent(false);
         public ElementHost CommandPaletteHost { get; set; }
         public static MainForm Instance { get; set; }
         public static IntPtr Hwnd { get; set; }
@@ -608,8 +610,6 @@ namespace mpvnet
 
         public void BuildMenu()
         {
-            ContextMenu = new WpfControls.ContextMenu();
-
             string content = File.ReadAllText(Core.InputConfPath);
             var items = CommandItem.GetItems(content);
 
@@ -636,7 +636,10 @@ namespace mpvnet
                 {
                     menuItem.Click += (sender, args) => {
                         try {
+                            App.RunTask(() => {
+                                MenuAutoResetEvent.WaitOne();
                                 Core.Command(item.Command);                
+                            });
                         }
                         catch (Exception ex) {
                             Msg.ShowException(ex);
@@ -997,6 +1000,8 @@ namespace mpvnet
 
             WPF.Init();
             App.UpdateWpfColors();
+            ContextMenu = new WpfControls.ContextMenu();
+            ContextMenu.Closed += ContextMenu_Closed;
             BuildMenu();
             System.Windows.Application.Current.ShutdownMode = System.Windows.ShutdownMode.OnExplicitShutdown;
             Cursor.Position = new Point(Cursor.Position.X + 1, Cursor.Position.Y);
@@ -1008,6 +1013,11 @@ namespace mpvnet
             WasShown = true;
         }
 
+        void ContextMenu_Closed(object sender, System.Windows.RoutedEventArgs e)
+        {
+            MenuAutoResetEvent.Set();
+        }
+
         protected override void OnResize(EventArgs e)
         {
             base.OnResize(e);

src/WPF/InputWindow.xaml.cs

@@ -99,9 +99,6 @@ namespace mpvnet
             var items = new Dictionary<string, CommandItem>();
 
             foreach (CommandItem i in CommandItem.Items)
-                if (items.ContainsKey(i.Input) && i.Input != "")
-                    Msg.ShowInfo($"Duplicate found:{BR2 + i.Input}: {i.Path + BR2}{items[i.Input].Input}: {items[i.Input].Path + BR2}Please note that you can chain multiple commands in the same line by using a semicolon as separator.", "Duplicate Found");
-                else
                 items[i.Input] = i;
         }