支持修改应用语言

src/Desktop/RodelAgent.UI.Models/Constants/SettingNames.cs

@@ -41,4 +41,5 @@ public enum SettingNames
     IsMigrating,
     LastSelectedGroup,
     ChatGroupPanelType,
+    AppLanguage,
 }

src/Desktop/RodelAgent.UI/App.xaml.cs

@@ -9,6 +9,7 @@
 using RodelAgent.UI.Models.Constants;
 using RodelAgent.UI.Toolkits;
 using Windows.ApplicationModel.Activation;
+using Windows.Globalization;
 using Windows.Storage;
 
 namespace RodelAgent.UI;
@@ -29,6 +30,11 @@ public partial class App : Application
     public App()
     {
         InitializeComponent();
+        var language = SettingsToolkit.ReadLocalSetting(SettingNames.AppLanguage, "default");
+        ApplicationLanguages.PrimaryLanguageOverride = language != "default"
+            ? language
+            : string.Empty;
+
         FluentIcons.WinUI.Extensions.UseSegoeMetrics(this);
         var mainAppInstance = AppInstance.FindOrRegisterForKey(Id);
         mainAppInstance.Activated += OnAppInstanceActivated;

src/Desktop/RodelAgent.UI/Controls/Base/Markdown/MarkdownTextBlock.xaml.cs

@@ -116,7 +116,7 @@ private void OnUnloaded(object sender, RoutedEventArgs e)
     private void Clean()
     {
         _document.RichTextBlock.Blocks.Clear();
-        _renderer.Clear();
+        _renderer?.Clear();
         GC.Collect();
     }
 

src/Desktop/RodelAgent.UI/Controls/Settings/LanguageSettingSection.xaml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<local:SettingSectionBase
+    x:Class="RodelAgent.UI.Controls.Settings.LanguageSettingSection"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:community="using:CommunityToolkit.WinUI.Controls"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:ext="using:RodelAgent.UI.Extensions"
+    xmlns:ic="using:FluentIcons.WinUI"
+    xmlns:local="using:RodelAgent.UI.Controls.Settings"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    mc:Ignorable="d">
+
+    <community:SettingsCard Description="{ext:Locale Name=LanguageSettingDescription}" Header="{ext:Locale Name=LanguageSetting}">
+        <community:SettingsCard.HeaderIcon>
+            <ic:SymbolIcon Symbol="LocalLanguage" />
+        </community:SettingsCard.HeaderIcon>
+
+        <ComboBox
+            x:Name="LanguageComboBox"
+            MinWidth="120"
+            AutomationProperties.Name="{ext:Locale Name=LanguageSetting}"
+            SelectionChanged="OnLanguageChangedAsync"
+            SelectionChangedTrigger="Committed">
+            <ComboBoxItem Content="{ext:Locale Name=SystemDefault}" Tag="default" />
+            <ComboBoxItem Content="简体中文" Tag="zh-Hans-CN" />
+            <ComboBoxItem Content="English" Tag="en-US" />
+        </ComboBox>
+    </community:SettingsCard>
+</local:SettingSectionBase>

src/Desktop/RodelAgent.UI/Controls/Settings/LanguageSettingSection.xaml.cs

@@ -0,0 +1,83 @@
+// Copyright (c) Rodel. All rights reserved.
+
+using System.ComponentModel;
+using Microsoft.Windows.AppLifecycle;
+using RodelAgent.UI.Models.Constants;
+using RodelAgent.UI.Toolkits;
+
+namespace RodelAgent.UI.Controls.Settings;
+
+/// <summary>
+/// 应用语言设置.
+/// </summary>
+public sealed partial class LanguageSettingSection : SettingSectionBase
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="LanguageSettingSection"/> class.
+    /// </summary>
+    public LanguageSettingSection()
+    {
+        InitializeComponent();
+        Loaded += OnLoaded;
+        Unloaded += OnUnloaded;
+    }
+
+    private void OnUnloaded(object sender, RoutedEventArgs e)
+        => ViewModel.PropertyChanged -= OnViewModelPropertyChanged;
+
+    private void OnLoaded(object sender, RoutedEventArgs e)
+    {
+        ViewModel.PropertyChanged += OnViewModelPropertyChanged;
+        CheckLanguage();
+    }
+
+    private void OnViewModelPropertyChanged(object sender, PropertyChangedEventArgs e)
+    {
+        if (e.PropertyName == nameof(ViewModel.AppLanguage))
+        {
+            CheckLanguage();
+        }
+    }
+
+    private void CheckLanguage()
+    {
+        if (string.IsNullOrEmpty(ViewModel.AppLanguage))
+        {
+            return;
+        }
+
+        var selectIndex = ViewModel.AppLanguage switch
+        {
+            "zh-Hans-CN" => 1,
+            "en-US" => 2,
+            _ => 0,
+        };
+
+        if (selectIndex == LanguageComboBox.SelectedIndex)
+        {
+            return;
+        }
+
+        LanguageComboBox.SelectedIndex = selectIndex;
+    }
+
+    private async void OnLanguageChangedAsync(object sender, SelectionChangedEventArgs e)
+    {
+        var item = e.AddedItems.First() as ComboBoxItem;
+        var lanCode = item?.Tag as string;
+        if (string.IsNullOrEmpty(lanCode)
+            || (!string.IsNullOrEmpty(ViewModel.AppLanguage) && ViewModel.AppLanguage == lanCode))
+        {
+            return;
+        }
+
+        ViewModel.AppLanguage = lanCode;
+        var dialog = new TipDialog(ResourceToolkit.GetLocalizedString(StringNames.ChangeLanguageTip));
+        var result = await dialog.ShowAsync();
+        if (result == ContentDialogResult.Primary)
+        {
+            AppInstance.GetCurrent().UnregisterKey();
+            _ = AppInstance.Restart(default);
+        }
+    }
+}

src/Desktop/RodelAgent.UI/Pages/Settings/GenericSettingsPage.xaml

@@ -25,6 +25,7 @@
                 Style="{StaticResource BodyStrongTextBlockStyle}"
                 Text="{ext:Locale Name=Generic}" />
             <settings:ThemeSettingSection ViewModel="{x:Bind ViewModel}" />
+            <settings:LanguageSettingSection ViewModel="{x:Bind ViewModel}" />
             <settings:AppLogSettingSection ViewModel="{x:Bind ViewModel}" />
             <settings:LibrarySettingSection ViewModel="{x:Bind ViewModel}" />
             <TextBlock

src/Desktop/RodelAgent.UI/Resources/en-US/Resources.resw

@@ -270,6 +270,9 @@
   <data name="ChangeDirectory" xml:space="preserve">
     <value>Change directory</value>
   </data>
+  <data name="ChangeLanguageTip" xml:space="preserve">
+    <value>You have changed the language of the app and need to restart the app for it to take effect.</value>
+  </data>
   <data name="ChatInputPlaceholder" xml:space="preserve">
     <value>Please enter chat content...</value>
   </data>
@@ -564,6 +567,12 @@
   <data name="Language" xml:space="preserve">
     <value>Language</value>
   </data>
+  <data name="LanguageSetting" xml:space="preserve">
+    <value>Application language</value>
+  </data>
+  <data name="LanguageSettingDescription" xml:space="preserve">
+    <value>Select the preferred language of the application.</value>
+  </data>
   <data name="LaunchApp" xml:space="preserve">
     <value>Launch app</value>
   </data>

src/Desktop/RodelAgent.UI/Resources/zh-Hans-CN/Resources.resw

@@ -270,6 +270,9 @@
   <data name="ChangeDirectory" xml:space="preserve">
     <value>更改目录</value>
   </data>
+  <data name="ChangeLanguageTip" xml:space="preserve">
+    <value>您更改了应用语言，需要重启应用以生效</value>
+  </data>
   <data name="ChatInputPlaceholder" xml:space="preserve">
     <value>请输入聊天内容...</value>
   </data>
@@ -564,6 +567,12 @@
   <data name="Language" xml:space="preserve">
     <value>语言</value>
   </data>
+  <data name="LanguageSetting" xml:space="preserve">
+    <value>应用程序语言</value>
+  </data>
+  <data name="LanguageSettingDescription" xml:space="preserve">
+    <value>选择应用程序的首选语言</value>
+  </data>
   <data name="LaunchApp" xml:space="preserve">
     <value>启动应用</value>
   </data>

src/Desktop/RodelAgent.UI/RodelAgent.UI.csproj

@@ -125,6 +125,7 @@
     <None Remove="Controls\Settings\AzureTranslateConfigSettingSection.xaml" />
     <None Remove="Controls\Settings\HunYuanChatConfigSettingSection.xaml" />
     <None Remove="Controls\Settings\HunYuanDrawConfigSettingSection.xaml" />
+    <None Remove="Controls\Settings\LanguageSettingSection.xaml" />
     <None Remove="Controls\Settings\LibrarySettingSection.xaml" />
     <None Remove="Controls\Settings\ModelClientConfigSettingSection.xaml" />
     <None Remove="Controls\Settings\ModelClientEndpointConfigSettingSection.xaml" />
@@ -604,6 +605,9 @@
     <Page Update="Controls\Chat\GroupOptionsPanel.xaml">
       <Generator>MSBuild:Compile</Generator>
     </Page>
+    <Page Update="Controls\Settings\LanguageSettingSection.xaml">
+      <Generator>MSBuild:Compile</Generator>
+    </Page>
     <None Update="NLog.config">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </None>

src/Desktop/RodelAgent.UI/ViewModels/Pages/SettingsPageViewModel/SettingsPageViewModel.Properties.cs

@@ -40,6 +40,9 @@ public sealed partial class SettingsPageViewModel
     [ObservableProperty]
     private bool _shouldRecordTranslate;
 
+    [ObservableProperty]
+    private string _appLanguage;
+
     /// <summary>
     /// 在线聊天服务.
     /// </summary>

src/Desktop/RodelAgent.UI/ViewModels/Pages/SettingsPageViewModel/SettingsPageViewModel.cs

@@ -29,6 +29,8 @@ public SettingsPageViewModel(
     private void InitializeGenericSettings()
     {
         AppTheme = SettingsToolkit.ReadLocalSetting(SettingNames.AppTheme, ElementTheme.Default);
+        CheckTheme();
+        AppLanguage = SettingsToolkit.ReadLocalSetting(SettingNames.AppLanguage, "default");
         UseStreamOutput = SettingsToolkit.ReadLocalSetting(SettingNames.UseStreamOutput, true);
         AppVersion = AppToolkit.GetPackageVersion();
         var copyrightTemplate = ResourceToolkit.GetLocalizedString(StringNames.CopyrightTemplate);
@@ -156,6 +158,9 @@ partial void OnAppThemeChanged(ElementTheme value)
         CheckTheme();
     }
 
+    partial void OnAppLanguageChanged(string value)
+        => SettingsToolkit.WriteLocalSetting(SettingNames.AppLanguage, value);
+
     partial void OnUseStreamOutputChanged(bool value)
         => SettingsToolkit.WriteLocalSetting(SettingNames.UseStreamOutput, value);