Add MEF exported VS RazorProjectInfoManager

src/Razor/src/Microsoft.VisualStudio.LanguageServices.Razor/LanguageClient/ProjectSystem/VisualStudioRazorProjectInfoPublisher.cs

@@ -0,0 +1,62 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the MIT license. See License.txt in the project root for license information.
+
+using System;
+using System.ComponentModel.Composition;
+using Microsoft.AspNetCore.Razor;
+using Microsoft.AspNetCore.Razor.ProjectSystem;
+using Microsoft.CodeAnalysis.Razor.ProjectSystem;
+using Microsoft.CodeAnalysis.Razor.Workspaces;
+
+namespace Microsoft.VisualStudio.Razor.LanguageClient.ProjectSystem;
+
+[Export(typeof(IRazorStartupService)]
+[Export(typeof(IRazorProjectInfoPublisher))]
+internal sealed class VisualStudioRazorProjectInfoPublisher : CodeAnalysis.Razor.ProjectSystem.RazorProjectInfoPublisher, IRazorStartupService
+{
+    [ImportingConstructor]
+    public VisualStudioRazorProjectInfoPublisher(IProjectSnapshotManager projectManager)
+        : base()
+    {
+        projectManager.Changed += ProjectManager_Changed;
+    }
+
+    private void ProjectManager_Changed(object sender, ProjectChangeEventArgs e)
+    {
+        // Don't do any work if the solution is closing
+        if (e.SolutionIsClosing)
+        {
+            return;
+        }
+
+        switch (e.Kind)
+        {
+            case ProjectChangeKind.ProjectAdded:
+            case ProjectChangeKind.ProjectChanged:
+            case ProjectChangeKind.DocumentRemoved:
+            case ProjectChangeKind.DocumentAdded:
+                var newer = e.Newer.AssumeNotNull();
+                AddWork(newer.ToRazorProjectInfo());
+                break;
+
+            case ProjectChangeKind.ProjectRemoved:
+                var older = e.Older.AssumeNotNull();
+                AddWork(new RazorProjectInfo(
+                    older.Key,
+                    older.FilePath,
+                    configuration: FallbackRazorConfiguration.Latest,
+                    rootNamespace: null,
+                    displayName: "",
+                    projectWorkspaceState: ProjectWorkspaceState.Default,
+                    documents: []));
+
+                break;
+
+            case ProjectChangeKind.DocumentChanged:
+                break;
+
+            default:
+                throw new NotSupportedException($"Unsupported {nameof(ProjectChangeKind)}: {e.Kind}");
+        }
+    }
+}

src/Razor/src/Microsoft.VisualStudio.LanguageServices.Razor/LanguageClient/RazorLanguageServerClient.cs

@@ -37,6 +37,7 @@ internal class RazorLanguageServerClient(
     LSPRequestInvoker requestInvoker,
     ProjectConfigurationFilePathStore projectConfigurationFilePathStore,
     RazorProjectInfoEndpointPublisher projectInfoEndpointPublisher,
+    IRazorProjectInfoPublisher projectInfoManager,
     ILoggerFactory loggerFactory,
     RazorLogHubTraceProvider traceProvider,
     LanguageServerFeatureOptions languageServerFeatureOptions,