Replace ISettingsFilePathProvider with Func<string> and move IResourceFileHandler to ILSpyX.

ICSharpCode.ILSpyCmd/IlspyCmdProgram.cs

@@ -371,7 +371,7 @@ Examples:
 			{
 				try
 				{
-					ILSpyX.Settings.ILSpySettings.SettingsFilePathProvider = new ILSpyX.Settings.DefaultSettingsFilePathProvider(ILSpySettingsFile);
+					ILSpyX.Settings.ILSpySettings.SettingsFilePathProvider = () => ILSpySettingsFile;
 					var settingsService = new ILSpyX.Settings.SettingsServiceBase(ILSpyX.Settings.ILSpySettings.Load());
 					decompilerSettings = settingsService.GetSettings<ILSpyX.Settings.DecompilerSettings>();
 				}

ICSharpCode.ILSpyX/Abstractions/IResourceFileHandler.cs

@@ -0,0 +1,88 @@
+// Copyright (c) 2026 AlphaSierraPapa for the SharpDevelop Team
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy of this
+// software and associated documentation files (the "Software"), to deal in the Software
+// without restriction, including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
+// to whom the Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all copies or
+// substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+using System.Collections.Generic;
+using System.IO;
+using System.Threading;
+
+using ICSharpCode.Decompiler;
+
+namespace ICSharpCode.ILSpyX.Abstractions
+{
+	/// <summary>
+	/// Plug-in contract for converting a resource entry from its raw byte form into a
+	/// language-specific source file during project export. Implementations are MEF-discovered
+	/// via <c>[Export(typeof(IResourceFileHandler))]</c> and consulted by the project-export
+	/// path; the first one to <see cref="CanHandle"/> the resource wins. The handler returns
+	/// the on-disk file name it emitted so the project file picks the right MSBuild item group
+	/// + Generator / SubType properties.
+	/// </summary>
+	public interface IResourceFileHandler
+	{
+		/// <summary>
+		/// MSBuild item type for the produced project entry — <c>"Page"</c> for BAML→XAML,
+		/// <c>"EmbeddedResource"</c> for the default raw fallback, etc.
+		/// </summary>
+		string EntryType { get; }
+
+		/// <summary>Returns true when this handler can process the named resource.</summary>
+		bool CanHandle(string name, ResourceFileHandlerContext context);
+
+		/// <summary>
+		/// Writes the decoded resource into the project directory (taken from
+		/// <see cref="ResourceFileHandlerContext.SaveAsProjectDirectory"/>) and returns the
+		/// resulting file name (relative to that directory). May add partial-type info to
+		/// <paramref name="context"/> for downstream WPF page x:Class binding.
+		/// </summary>
+		string WriteResourceToFile(LoadedAssembly assembly, string fileName, Stream stream, ResourceFileHandlerContext context);
+	}
+
+	/// <summary>
+	/// Per-project-export context shared across every <see cref="IResourceFileHandler"/>
+	/// invocation in a single export run. Carries the three host-supplied parameters the
+	/// handler actually needs (settings, cancellation, output directory) and collects
+	/// partial-type info + additional MSBuild properties for the project file emitter to
+	/// stitch into the produced .csproj. Lives in ILSpyX rather than in the host so plugin
+	/// authors and headless consumers like ilspycmd can implement and host handlers
+	/// without depending on the GUI app.
+	/// </summary>
+	public class ResourceFileHandlerContext
+	{
+		readonly List<PartialTypeInfo> partialTypes = new();
+		public List<PartialTypeInfo> PartialTypes => partialTypes;
+
+		readonly Dictionary<string, string> additionalProperties = new();
+		public Dictionary<string, string> AdditionalProperties => additionalProperties;
+
+		public DecompilerSettings DecompilerSettings { get; }
+		public CancellationToken CancellationToken { get; }
+		public string? SaveAsProjectDirectory { get; }
+
+		public ResourceFileHandlerContext(DecompilerSettings decompilerSettings, CancellationToken cancellationToken, string? saveAsProjectDirectory)
+		{
+			this.DecompilerSettings = decompilerSettings;
+			this.CancellationToken = cancellationToken;
+			this.SaveAsProjectDirectory = saveAsProjectDirectory;
+		}
+
+		public void AddPartialTypeInfo(PartialTypeInfo info)
+		{
+			this.PartialTypes.Add(info);
+		}
+	}
+}

ICSharpCode.ILSpyX/Settings/DefaultSettingsFilePathProvider.cs

@@ -1,40 +0,0 @@
-// Copyright (c) 2022 AlphaSierraPapa for the SharpDevelop Team
-// 
-// Permission is hereby granted, free of charge, to any person obtaining a copy of this
-// software and associated documentation files (the "Software"), to deal in the Software
-// without restriction, including without limitation the rights to use, copy, modify, merge,
-// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
-// to whom the Software is furnished to do so, subject to the following conditions:
-// 
-// The above copyright notice and this permission notice shall be included in all copies or
-// substantial portions of the Software.
-// 
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
-// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
-// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
-// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-// DEALINGS IN THE SOFTWARE.
-
-using System;
-
-namespace ICSharpCode.ILSpyX.Settings
-{
-	/// <summary>
-	/// Used in scenarios where the user passes a path and that is to be used, eg ilspycmd parameter
-	/// </summary>
-	public class DefaultSettingsFilePathProvider : ISettingsFilePathProvider
-	{
-		private readonly string _providedPath;
-
-		public DefaultSettingsFilePathProvider(string providedPath)
-		{
-			_providedPath = providedPath;
-		}
-
-		public string GetSettingsFilePath()
-		{
-			return _providedPath;
-		}
-	}
-}

ICSharpCode.ILSpyX/Settings/ILSpySettings.cs

@@ -25,14 +25,14 @@ using System.Xml.Linq;
 namespace ICSharpCode.ILSpyX.Settings
 {
 	/// <summary>
-	/// Manages IL Spy settings.
+	/// Manages ILSpy settings.
 	/// </summary>
 	public class ILSpySettings : ISettingsProvider
 	{
 		/// <summary>
 		/// This settings file path provider determines where to load settings file from, includes filename
 		/// </summary>
-		public static ISettingsFilePathProvider? SettingsFilePathProvider { get; set; }
+		public static Func<string>? SettingsFilePathProvider { get; set; }
 
 		XElement root;
 
@@ -125,11 +125,7 @@ namespace ICSharpCode.ILSpyX.Settings
 
 		static string GetConfigFile()
 		{
-			if (null != SettingsFilePathProvider)
-				return SettingsFilePathProvider.GetSettingsFilePath();
-
-			throw new ArgumentNullException(nameof(SettingsFilePathProvider));
-			// return "ILSpy.xml";
+			return SettingsFilePathProvider?.Invoke() ?? throw new ArgumentNullException(nameof(SettingsFilePathProvider));
 		}
 
 		const string ConfigFileMutex = "01A91708-49D1-410D-B8EB-4DE2662B3971";

ICSharpCode.ILSpyX/Settings/ISettingsFilePathProvider.cs

@@ -1,25 +0,0 @@
-// Copyright (c) 2022 AlphaSierraPapa for the SharpDevelop Team
-// 
-// Permission is hereby granted, free of charge, to any person obtaining a copy of this
-// software and associated documentation files (the "Software"), to deal in the Software
-// without restriction, including without limitation the rights to use, copy, modify, merge,
-// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
-// to whom the Software is furnished to do so, subject to the following conditions:
-// 
-// The above copyright notice and this permission notice shall be included in all copies or
-// substantial portions of the Software.
-// 
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
-// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
-// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
-// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-// DEALINGS IN THE SOFTWARE.
-
-namespace ICSharpCode.ILSpyX.Settings
-{
-	public interface ISettingsFilePathProvider
-	{
-		string GetSettingsFilePath();
-	}
-}