Stack Trace Explorer: Cancel previous navigation on new navigation (#79069)

Partial fix for #59682

Author: JoeRobich

src/Features/Core/Portable/StackTraceExplorer/StackTraceExplorerUtilities.cs

@@ -47,6 +47,8 @@ internal static class StackTraceExplorerUtilities
         using var _ = PooledObjects.ArrayBuilder<Project>.GetInstance(out var candidateProjects);
         foreach (var project in solution.Projects)
         {
+            cancellationToken.ThrowIfCancellationRequested();
+
             if (!project.SupportsCompilation)
             {
                 continue;
@@ -116,6 +118,8 @@ DefinitionItem GetDefinition(IMethodSymbol method)
 
         foreach (var resolver in _resolvers)
         {
+            cancellationToken.ThrowIfCancellationRequested();
+
             var matchingMethod = await resolver.TryGetBestMatchAsync(project, type, methodNode, methodArguments, methodTypeArguments, cancellationToken).ConfigureAwait(false);
             if (matchingMethod is not null)
             {

src/VisualStudio/Core/Def/StackTraceExplorer/StackFrameViewModel.cs

@@ -20,8 +20,8 @@
 using Microsoft.CodeAnalysis.Navigation;
 using Microsoft.CodeAnalysis.PooledObjects;
 using Microsoft.CodeAnalysis.StackTraceExplorer;
+using Microsoft.CodeAnalysis.Threading;
 using Microsoft.VisualStudio.Text.Classification;
-using Roslyn.Utilities;
 
 namespace Microsoft.VisualStudio.LanguageServices.StackTraceExplorer;
 
@@ -44,12 +44,14 @@ internal sealed class StackFrameViewModel(
     private TextDocument? _cachedDocument;
     private int _cachedLineNumber;
 
+    private readonly CancellationSeries _navigationCancellation = new(threadingContext.DisposalToken);
+
     public override bool ShowMouseOver => true;
 
     public void NavigateToClass()
     {
-        var cancellationToken = _threadingContext.DisposalToken;
-        Task.Run(() => NavigateToClassAsync(cancellationToken), cancellationToken).ReportNonFatalErrorAsync();
+        var cancellationToken = _navigationCancellation.CreateNext();
+        _ = NavigateToClassAsync(cancellationToken).ReportNonFatalErrorUnlessCancelledAsync(cancellationToken);
     }
 
     public async Task NavigateToClassAsync(CancellationToken cancellationToken)
@@ -77,8 +79,8 @@ await location.TryNavigateToAsync(
 
     public void NavigateToSymbol()
     {
-        var cancellationToken = _threadingContext.DisposalToken;
-        Task.Run(() => NavigateToMethodAsync(cancellationToken), cancellationToken).ReportNonFatalErrorAsync();
+        var cancellationToken = _navigationCancellation.CreateNext();
+        _ = NavigateToMethodAsync(cancellationToken).ReportNonFatalErrorUnlessCancelledAsync(cancellationToken);
     }
 
     public async Task NavigateToMethodAsync(CancellationToken cancellationToken)
@@ -95,8 +97,8 @@ public async Task NavigateToMethodAsync(CancellationToken cancellationToken)
 
     public void NavigateToFile()
     {
-        var cancellationToken = _threadingContext.DisposalToken;
-        Task.Run(() => NavigateToFileAsync(cancellationToken), cancellationToken).ReportNonFatalErrorAsync();
+        var cancellationToken = _navigationCancellation.CreateNext();
+        _ = NavigateToFileAsync(cancellationToken).ReportNonFatalErrorUnlessCancelledAsync(cancellationToken);
     }
 
     public async Task NavigateToFileAsync(CancellationToken cancellationToken)