test: 测试 MVVM 模式与绑定

TestMvvm/App.axaml

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+<Application xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             x:Class="TestMvvm.App"
+             xmlns:local="using:TestMvvm"
+             RequestedThemeVariant="Default">
+    <!-- "Default" ThemeVariant follows system theme variant. "Dark" or "Light" are other available options. -->
+
+    <Application.DataTemplates>
+        <local:ViewLocator />
+    </Application.DataTemplates>
+
+    <Application.Styles>
+        <FluentTheme />
+    </Application.Styles>
+</Application>

TestMvvm/App.axaml.cs

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+using System.Linq;
+using Avalonia;
+using Avalonia.Controls.ApplicationLifetimes;
+using Avalonia.Data.Core.Plugins;
+using Avalonia.Markup.Xaml;
+using JackCraft.I18N;
+using TestMvvm.ViewModels;
+using TestMvvm.Views;
+
+namespace TestMvvm;
+
+public class App : Application
+{
+    public static I18NManager I18NManager { get; } = new("TestMvvm.Assets.Resources");
+
+    public override void Initialize()
+    {
+        AvaloniaXamlLoader.Load(this);
+    }
+
+    public override void OnFrameworkInitializationCompleted()
+    {
+        if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
+        {
+            // Avoid duplicate validations from both Avalonia and the CommunityToolkit. 
+            // More info: https://docs.avaloniaui.net/docs/guides/development-guides/data-validation#manage-validationplugins
+            DisableAvaloniaDataAnnotationValidation();
+            desktop.MainWindow = new MainWindow
+            {
+                DataContext = new MainWindowViewModel()
+            };
+        }
+
+        base.OnFrameworkInitializationCompleted();
+    }
+
+    private void DisableAvaloniaDataAnnotationValidation()
+    {
+        // Get an array of plugins to remove
+        var dataValidationPluginsToRemove =
+            BindingPlugins.DataValidators.OfType<DataAnnotationsValidationPlugin>().ToArray();
+
+        // remove each entry found
+        foreach (var plugin in dataValidationPluginsToRemove) BindingPlugins.DataValidators.Remove(plugin);
+    }
+}

TestMvvm/Assets/Resources.Designer.cs

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+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace TestMvvm.Assets {
+    using System;
+    
+    
+    [System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "4.0.0.0")]
+    [System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    [System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    internal class Resources {
+        
+        private static System.Resources.ResourceManager resourceMan;
+        
+        private static System.Globalization.CultureInfo resourceCulture;
+        
+        [System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
+        internal Resources() {
+        }
+        
+        [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static System.Resources.ResourceManager ResourceManager {
+            get {
+                if (object.Equals(null, resourceMan)) {
+                    System.Resources.ResourceManager temp = new System.Resources.ResourceManager("TestMvvm.Assets.Resources", typeof(Resources).Assembly);
+                    resourceMan = temp;
+                }
+                return resourceMan;
+            }
+        }
+        
+        [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static System.Globalization.CultureInfo Culture {
+            get {
+                return resourceCulture;
+            }
+            set {
+                resourceCulture = value;
+            }
+        }
+        
+        internal static string Test1 {
+            get {
+                return ResourceManager.GetString("Test1", resourceCulture);
+            }
+        }
+    }
+}

TestMvvm/Assets/Resources.resx

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+<?xml version="1.0" encoding="utf-8"?>
+
+<root>
+    <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata" id="root"
+                xmlns="">
+        <xsd:element name="root" msdata:IsDataSet="true">
+
+        </xsd:element>
+    </xsd:schema>
+    <resheader name="resmimetype">
+        <value>text/microsoft-resx</value>
+    </resheader>
+    <resheader name="version">
+        <value>1.3</value>
+    </resheader>
+    <resheader name="reader">
+        <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral,
+            PublicKeyToken=b77a5c561934e089
+        </value>
+    </resheader>
+    <resheader name="writer">
+        <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral,
+            PublicKeyToken=b77a5c561934e089
+        </value>
+    </resheader>
+    <data name="Test1" xml:space="preserve">
+        <value>Test1: {0}</value>
+    </data>
+</root>

TestMvvm/Assets/Resources.zh-hans.resx

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+<root>
+    <resheader name="resmimetype">
+        <value>text/microsoft-resx</value>
+    </resheader>
+    <resheader name="version">
+        <value>1.3</value>
+    </resheader>
+    <resheader name="reader">
+        <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral,
+            PublicKeyToken=b77a5c561934e089
+        </value>
+    </resheader>
+    <resheader name="writer">
+        <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral,
+            PublicKeyToken=b77a5c561934e089
+        </value>
+    </resheader>
+    <data name="Test1" xml:space="preserve">
+        <value>测试1: {0}</value>
+    </data>
+</root>

TestMvvm/Program.cs

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+using System;
+using Avalonia;
+
+namespace TestMvvm;
+
+internal sealed class Program
+{
+    // Initialization code. Don't use any Avalonia, third-party APIs or any
+    // SynchronizationContext-reliant code before AppMain is called: things aren't initialized
+    // yet and stuff might break.
+    [STAThread]
+    public static void Main(string[] args)
+    {
+        BuildAvaloniaApp()
+            .StartWithClassicDesktopLifetime(args);
+    }
+
+    // Avalonia configuration, don't remove; also used by visual designer.
+    public static AppBuilder BuildAvaloniaApp()
+    {
+        return AppBuilder.Configure<App>()
+            .UsePlatformDetect()
+            .WithInterFont()
+            .LogToTrace();
+    }
+}

TestMvvm/TestMvvm.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+    <PropertyGroup>
+        <OutputType>WinExe</OutputType>
+        <TargetFramework>net9.0</TargetFramework>
+        <Nullable>enable</Nullable>
+        <BuiltInComInteropSupport>true</BuiltInComInteropSupport>
+        <ApplicationManifest>app.manifest</ApplicationManifest>
+        <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <Folder Include="Models\"/>
+        <AvaloniaResource Include="Assets\**"/>
+    </ItemGroup>
+
+    <ItemGroup>
+        <PackageReference Include="Avalonia" Version="11.2.3"/>
+        <PackageReference Include="Avalonia.Desktop" Version="11.2.3"/>
+        <PackageReference Include="Avalonia.Themes.Fluent" Version="11.2.3"/>
+        <PackageReference Include="Avalonia.Fonts.Inter" Version="11.2.3"/>
+        <!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
+        <PackageReference Include="Avalonia.Diagnostics" Version="11.2.3">
+            <IncludeAssets Condition="'$(Configuration)' != 'Debug'">None</IncludeAssets>
+            <PrivateAssets Condition="'$(Configuration)' != 'Debug'">All</PrivateAssets>
+        </PackageReference>
+        <PackageReference Include="CommunityToolkit.Mvvm" Version="8.2.1"/>
+    </ItemGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\JackCraft.I18N\JackCraft.I18N.csproj"/>
+    </ItemGroup>
+
+    <ItemGroup>
+        <EmbeddedResource Update="Assets\Resources.resx">
+            <Generator>ResXFileCodeGenerator</Generator>
+            <LastGenOutput>Resources.Designer.cs</LastGenOutput>
+        </EmbeddedResource>
+    </ItemGroup>
+
+    <ItemGroup>
+        <Compile Update="Assets\Resources.Designer.cs">
+            <DesignTime>True</DesignTime>
+            <AutoGen>True</AutoGen>
+            <DependentUpon>Resources.resx</DependentUpon>
+        </Compile>
+    </ItemGroup>
+</Project>

TestMvvm/ViewLocator.cs

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+using System;
+using Avalonia.Controls;
+using Avalonia.Controls.Templates;
+using TestMvvm.ViewModels;
+
+namespace TestMvvm;
+
+public class ViewLocator : IDataTemplate
+{
+    public Control? Build(object? param)
+    {
+        if (param is null)
+            return null;
+
+        var name = param.GetType().FullName!.Replace("ViewModel", "View", StringComparison.Ordinal);
+        var type = Type.GetType(name);
+
+        if (type != null) return (Control)Activator.CreateInstance(type)!;
+
+        return new TextBlock { Text = "Not Found: " + name };
+    }
+
+    public bool Match(object? data)
+    {
+        return data is ViewModelBase;
+    }
+}

TestMvvm/ViewModels/MainWindowViewModel.cs

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+using System.Globalization;
+using System.IO;
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
+
+namespace TestMvvm.ViewModels;
+
+public partial class MainWindowViewModel : ViewModelBase
+{
+    [ObservableProperty] public string? test = Path.GetRandomFileName();
+
+    [RelayCommand]
+    public void RandomText()
+    {
+        Test = Path.GetRandomFileName();
+    }
+
+    [RelayCommand]
+    public void ChangeToChinese()
+    {
+        App.I18NManager.Culture = new CultureInfo("zh-hans");
+    }
+
+    [RelayCommand]
+    public void ChangeToDefault()
+    {
+        App.I18NManager.Culture = CultureInfo.InvariantCulture;
+    }
+}

TestMvvm/ViewModels/ViewModelBase.cs

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+using CommunityToolkit.Mvvm.ComponentModel;
+
+namespace TestMvvm.ViewModels;
+
+public class ViewModelBase : ObservableObject
+{
+}

TestMvvm/Views/MainWindow.axaml

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+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:vm="using:TestMvvm.ViewModels"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:i18N="clr-namespace:JackCraft.I18N;assembly=JackCraft.I18N"
+        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+        x:Class="TestMvvm.Views.MainWindow"
+        x:DataType="vm:MainWindowViewModel"
+        Icon="/Assets/avalonia-logo.ico"
+        Title="TestMvvm">
+
+    <Design.DataContext>
+        <!-- This only sets the DataContext for the previewer in an IDE,
+             to set the actual DataContext for runtime, set the DataContext property in code (look at App.axaml.cs) -->
+        <vm:MainWindowViewModel />
+    </Design.DataContext>
+
+    <StackPanel>
+        <TextBlock Text="{Binding Test}" HorizontalAlignment="Center" VerticalAlignment="Center" />
+        <TextBlock Text="{i18N:I18N Test1, {Binding Test}}" HorizontalAlignment="Center" VerticalAlignment="Center" />
+        <Button Content="随机文本"
+                Command="{Binding RandomTextCommand}" />
+        <Button Content="切换中文"
+                Command="{Binding ChangeToChineseCommand}" />
+        <Button Content="切换默认"
+                Command="{Binding ChangeToDefaultCommand}" />
+    </StackPanel>
+
+</Window>

TestMvvm/Views/MainWindow.axaml.cs

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+using Avalonia.Controls;
+
+namespace TestMvvm.Views;
+
+public partial class MainWindow : Window
+{
+    public MainWindow()
+    {
+        InitializeComponent();
+    }
+}

TestMvvm/app.manifest

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+<?xml version="1.0" encoding="utf-8"?>
+<assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1">
+    <!-- This manifest is used on Windows only.
+         Don't remove it as it might cause problems with window transparency and embedded controls.
+         For more details visit https://learn.microsoft.com/en-us/windows/win32/sbscs/application-manifests -->
+    <assemblyIdentity version="1.0.0.0" name="TestMvvm.Desktop"/>
+
+    <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+        <application>
+            <!-- A list of the Windows versions that this application has been tested on
+                 and is designed to work with. Uncomment the appropriate elements
+                 and Windows will automatically select the most compatible environment. -->
+
+            <!-- Windows 10 -->
+            <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}"/>
+        </application>
+    </compatibility>
+</assembly>