feature: move main menu to macOS system menu bar

src/App.axaml

@@ -1,5 +1,6 @@
 <Application xmlns="https://github.com/avaloniaui"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:s="using:SourceGit"
              x:Class="SourceGit.App"
              Name="SourceGit"
              RequestedThemeVariant="Dark">
@@ -21,4 +22,16 @@
     <StyleInclude Source="avares://AvaloniaEdit/Themes/Fluent/AvaloniaEdit.xaml" />
     <StyleInclude Source="/Resources/Styles.axaml"/>
   </Application.Styles>
+
+  <NativeMenu.Menu>
+    <NativeMenu>
+      <NativeMenuItem Header="{DynamicResource Text.About}" Command="{x:Static s:App.OpenAboutCommand}"/>
+      <NativeMenuItem Header="{DynamicResource Text.Hotkeys}" Command="{x:Static s:App.OpenHotkeysCommand}"/>
+      <NativeMenuItem Header="{DynamicResource Text.SelfUpdate}" Command="{x:Static s:App.CheckForUpdateCommand}"/>
+      <NativeMenuItem Header="-"/>
+      <NativeMenuItem Header="{DynamicResource Text.Preference}" Command="{x:Static s:App.OpenPreferenceCommand}"/>
+      <NativeMenuItem Header="-"/>
+      <NativeMenuItem Header="{DynamicResource Text.Quit}" Command="{x:Static s:App.QuitCommand}"/>
+    </NativeMenu>
+  </NativeMenu.Menu>
 </Application>

src/App.axaml.cs

@@ -5,6 +5,7 @@ using System.Reflection;
 using System.Text;
 using System.Text.Json;
 using System.Threading.Tasks;
+using System.Windows.Input;
 
 using Avalonia;
 using Avalonia.Controls;
@@ -18,9 +19,27 @@ using Avalonia.Threading;
 
 namespace SourceGit
 {
+    public class SimpleCommand : ICommand
+    {
+        public event EventHandler CanExecuteChanged
+        {
+            add { }
+            remove { }
+        }
+
+        public SimpleCommand(Action action)
+        {
+            _action = action;
+        }
+
+        public bool CanExecute(object parameter) => _action != null;
+        public void Execute(object parameter) => _action?.Invoke();
+
+        private Action _action = null;
+    }
+
     public partial class App : Application
     {
-
         [STAThread]
         public static void Main(string[] args)
         {
@@ -67,6 +86,31 @@ namespace SourceGit
             return builder;
         }
 
+        public static readonly SimpleCommand OpenPreferenceCommand = new SimpleCommand(() =>
+        {
+            var dialog = new Views.Preference();
+            dialog.ShowDialog(GetTopLevel() as Window);
+        });
+
+        public static readonly SimpleCommand OpenHotkeysCommand = new SimpleCommand(() =>
+        {
+            var dialog = new Views.Hotkeys();
+            dialog.ShowDialog(GetTopLevel() as Window);
+        });
+
+        public static readonly SimpleCommand OpenAboutCommand = new SimpleCommand(() =>
+        {
+            var dialog = new Views.About();
+            dialog.ShowDialog(GetTopLevel() as Window);
+        });
+
+        public static readonly SimpleCommand CheckForUpdateCommand = new SimpleCommand(() =>
+        {
+            Check4Update(true);
+        });
+
+        public static readonly SimpleCommand QuitCommand = new SimpleCommand(Quit);
+
         public static void RaiseException(string context, string message)
         {
             if (Current is App app && app._notificationReceiver != null)

src/Native/MacOS.cs

@@ -22,7 +22,6 @@ namespace SourceGit.Native
 
             builder.With(new MacOSPlatformOptions()
             {
-                DisableNativeMenus = true,
                 DisableDefaultApplicationMenuItems = true,
             });
         }

src/Resources/Locales/en_US.axaml

@@ -310,6 +310,7 @@
   <x:String x:Key="Text.PushTag" xml:space="preserve">Push Tag To Remote</x:String>
   <x:String x:Key="Text.PushTag.Remote" xml:space="preserve">Remote :</x:String>
   <x:String x:Key="Text.PushTag.Tag" xml:space="preserve">Tag :</x:String>
+  <x:String x:Key="Text.Quit" xml:space="preserve">Quit</x:String>
   <x:String x:Key="Text.Rebase" xml:space="preserve">Rebase Current Branch</x:String>
   <x:String x:Key="Text.Rebase.AutoStash" xml:space="preserve">Stash &amp; reapply local changes</x:String>
   <x:String x:Key="Text.Rebase.On" xml:space="preserve">On :</x:String>

src/Resources/Locales/zh_CN.axaml

@@ -310,6 +310,7 @@
   <x:String x:Key="Text.PushTag" xml:space="preserve">推送标签到远程仓库</x:String>
   <x:String x:Key="Text.PushTag.Remote" xml:space="preserve">远程仓库 ：</x:String>
   <x:String x:Key="Text.PushTag.Tag" xml:space="preserve">标签 ：</x:String>
+  <x:String x:Key="Text.Quit" xml:space="preserve">退出</x:String>
   <x:String x:Key="Text.Rebase" xml:space="preserve">变基(rebase)操作</x:String>
   <x:String x:Key="Text.Rebase.AutoStash" xml:space="preserve">自动贮藏并恢复本地变更</x:String>
   <x:String x:Key="Text.Rebase.On" xml:space="preserve">目标提交 ：</x:String>

src/Views/Launcher.axaml

@@ -2,6 +2,7 @@
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:s="using:SourceGit"
         xmlns:vm="using:SourceGit.ViewModels"
         xmlns:m="using:SourceGit.Models"
         xmlns:c="using:SourceGit.Converters"
@@ -49,31 +50,31 @@
       </Border>
 
       <!-- Menu -->
-      <Button Grid.Column="{OnPlatform 0, macOS=2}" Classes="icon_button" VerticalAlignment="Bottom">
+      <Button Grid.Column="0" Classes="icon_button" VerticalAlignment="Bottom" IsVisible="{OnPlatform True, macOS=False}">
         <Button.Margin>
           <OnPlatform Default="4,0,2,3" macOS="4,0,6,3"/>
         </Button.Margin>
         
         <Button.Flyout>
           <MenuFlyout Placement="BottomEdgeAlignedLeft" VerticalOffset="-8">
-            <MenuItem Header="{DynamicResource Text.Preference}" Click="OpenPreference">
+            <MenuItem Header="{DynamicResource Text.Preference}" Command="{x:Static s:App.OpenPreferenceCommand}">
               <MenuItem.Icon>
                 <Path Width="14" Height="14" Data="{StaticResource Icons.Settings2}"/>
               </MenuItem.Icon>
             </MenuItem>
-            <MenuItem Header="{DynamicResource Text.Hotkeys}" Click="OpenHotkeys">
+            <MenuItem Header="{DynamicResource Text.Hotkeys}" Command="{x:Static s:App.OpenHotkeysCommand}">
               <MenuItem.Icon>
                 <Path Width="14" Height="14" Data="{StaticResource Icons.Hotkeys}"/>
               </MenuItem.Icon>
             </MenuItem>
             <MenuItem Header="-"/>
-            <MenuItem Header="{DynamicResource Text.SelfUpdate}" Click="Check4Update">
+            <MenuItem Header="{DynamicResource Text.SelfUpdate}" Command="{x:Static s:App.CheckForUpdateCommand}">
               <MenuItem.Icon>
                 <Path Width="14" Height="14" Data="{StaticResource Icons.SoftwareUpdate}"/>
               </MenuItem.Icon>
             </MenuItem>
             <MenuItem Header="-"/>
-            <MenuItem Header="{DynamicResource Text.About}" Click="OpenAboutDialog">
+            <MenuItem Header="{DynamicResource Text.About}" Command="{x:Static s:App.OpenAboutCommand}">
               <MenuItem.Icon>
                 <Path Width="14" Height="14" Data="{StaticResource Icons.Info}"/>
               </MenuItem.Icon>

src/Views/Launcher.axaml.cs

@@ -337,33 +337,6 @@ namespace SourceGit.Views
             OnPopupCancel(sender, e);
         }
 
-        private async void OpenPreference(object sender, RoutedEventArgs e)
-        {
-            var dialog = new Preference();
-            await dialog.ShowDialog(this);
-            e.Handled = true;
-        }
-
-        private async void OpenHotkeys(object sender, RoutedEventArgs e)
-        {
-            var dialog = new Hotkeys();
-            await dialog.ShowDialog(this);
-            e.Handled = true;
-        }
-
-        private void Check4Update(object sender, RoutedEventArgs e)
-        {
-            App.Check4Update(true);
-            e.Handled = true;
-        }
-
-        private async void OpenAboutDialog(object sender, RoutedEventArgs e)
-        {
-            var dialog = new About();
-            await dialog.ShowDialog(this);
-            e.Handled = true;
-        }
-
         private bool _pressedTab = false;
         private Point _pressedTabPosition = new Point();
         private bool _startDrag = false;