Add AvaloniaNameGeneratorIsEnabled parameter

src/tools/Avalonia.Generators/Avalonia.Generators.csproj

@@ -5,6 +5,7 @@
     <PackageId>Avalonia.Generators</PackageId>
     <DefineConstants>$(DefineConstants);XAMLX_INTERNAL</DefineConstants>
     <IsPackable>true</IsPackable>
+    <IsRoslynComponent>true</IsRoslynComponent>
   </PropertyGroup>
 
   <ItemGroup>

src/tools/Avalonia.Generators/Avalonia.Generators.props

@@ -1,5 +1,6 @@
 <Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
+    <AvaloniaNameGeneratorIsEnabled Condition="'$(AvaloniaNameGeneratorIsEnabled)' == ''">true</AvaloniaNameGeneratorIsEnabled>
     <AvaloniaNameGeneratorBehavior Condition="'$(AvaloniaNameGeneratorBehavior)' == ''">InitializeComponent</AvaloniaNameGeneratorBehavior>
     <AvaloniaNameGeneratorDefaultFieldModifier Condition="'$(AvaloniaNameGeneratorDefaultFieldModifier)' == ''">internal</AvaloniaNameGeneratorDefaultFieldModifier>
     <AvaloniaNameGeneratorFilterByPath Condition="'$(AvaloniaNameGeneratorFilterByPath)' == ''">*</AvaloniaNameGeneratorFilterByPath>
@@ -7,6 +8,7 @@
   </PropertyGroup>
   <ItemGroup>
     <CompilerVisibleItemMetadata Include="AdditionalFiles" MetadataName="SourceItemGroup"/>
+    <CompilerVisibleProperty Include="AvaloniaNameGeneratorIsEnabled" />
     <CompilerVisibleProperty Include="AvaloniaNameGeneratorBehavior" />
     <CompilerVisibleProperty Include="AvaloniaNameGeneratorDefaultFieldModifier" />
     <CompilerVisibleProperty Include="AvaloniaNameGeneratorFilterByPath" />

src/tools/Avalonia.Generators/GeneratorOptions.cs

@@ -5,13 +5,17 @@ using Microsoft.CodeAnalysis;
 
 namespace Avalonia.Generators;
 
+// When update these enum values, don't forget to update Avalonia.Generators.props.
 internal enum BuildProperties
 {
-    AvaloniaNameGeneratorBehavior = 0,
-    AvaloniaNameGeneratorDefaultFieldModifier = 1,
-    AvaloniaNameGeneratorFilterByPath = 2,
-    AvaloniaNameGeneratorFilterByNamespace = 3,
-    AvaloniaNameGeneratorViewFileNamingStrategy = 4,
+    AvaloniaNameGeneratorIsEnabled = 0,
+    AvaloniaNameGeneratorBehavior = 1,
+    AvaloniaNameGeneratorDefaultFieldModifier = 2,
+    AvaloniaNameGeneratorFilterByPath = 3,
+    AvaloniaNameGeneratorFilterByNamespace = 4,
+    AvaloniaNameGeneratorViewFileNamingStrategy = 5,
+    
+    // TODO add other generators properties here.
 }
 
 internal class GeneratorOptions
@@ -20,6 +24,10 @@ internal class GeneratorOptions
 
     public GeneratorOptions(GeneratorExecutionContext context) => _context = context;
 
+    public bool AvaloniaNameGeneratorIsEnabled => GetBoolProperty(
+        BuildProperties.AvaloniaNameGeneratorIsEnabled,
+        true);
+    
     public Behavior AvaloniaNameGeneratorBehavior => GetEnumProperty(
         BuildProperties.AvaloniaNameGeneratorBehavior,
         Behavior.InitializeComponent);
@@ -53,4 +61,11 @@ internal class GeneratorOptions
         var value = _context.GetMsBuildProperty(key, defaultValue.ToString());
         return Enum.TryParse(value, true, out TEnum behavior) ? behavior : defaultValue;
     }
+    
+    private bool GetBoolProperty(BuildProperties name, bool defaultValue)
+    {
+        var key = name.ToString();
+        var value = _context.GetMsBuildProperty(key, defaultValue.ToString());
+        return bool.TryParse(value, out var result) ? result : defaultValue;
+    }
 }

src/tools/Avalonia.Generators/NameGenerator/AvaloniaNameSourceGenerator.cs

@@ -17,6 +17,11 @@ public class AvaloniaNameSourceGenerator : ISourceGenerator
         try
         {
             var generator = CreateNameGenerator(context);
+            if (generator is null)
+            {
+                return;
+            }
+
             var partials = generator.GenerateNameReferences(context.AdditionalFiles);
             foreach (var (fileName, content) in partials) context.AddSource(fileName, content);
         }
@@ -29,6 +34,11 @@ public class AvaloniaNameSourceGenerator : ISourceGenerator
     private static INameGenerator CreateNameGenerator(GeneratorExecutionContext context)
     {
         var options = new GeneratorOptions(context);
+        if (!options.AvaloniaNameGeneratorIsEnabled)
+        {
+            return null;
+        }
+
         var types = new RoslynTypeSystem((CSharpCompilation)context.Compilation);
         ICodeGenerator generator = options.AvaloniaNameGeneratorBehavior switch {
             Behavior.OnlyProperties => new OnlyPropertiesCodeGenerator(),

src/tools/Avalonia.Generators/Properties/launchSettings.json

@@ -0,0 +1,8 @@
+{
+  "profiles": {
+    "Profile 1": {
+      "commandName": "DebugRoslynComponent",
+      "targetProject": "..\\..\\..\\samples\\Generators.Sandbox\\Generators.Sandbox.csproj"
+    }
+  }
+}