fix group panel, restarts with dtr entry

MareSynchronos/UI/DtrEntry.cs

@@ -10,12 +10,11 @@ namespace MareSynchronos.UI;
 
 public sealed class DtrEntry : IDisposable, IHostedService
 {
-    private readonly DtrBarEntry _entry;
-    private readonly ConfigurationServiceBase<MareConfig> _configService;
-    private readonly PairManager _pairManager;
     private readonly ApiController _apiController;
-
     private readonly CancellationTokenSource _cancellationTokenSource = new();
+    private readonly ConfigurationServiceBase<MareConfig> _configService;
+    private readonly DtrBarEntry _entry;
+    private readonly PairManager _pairManager;
     private Task? _runTask;
     private string? _text;
 
@@ -34,6 +33,44 @@ public sealed class DtrEntry : IDisposable, IHostedService
         _entry.Dispose();
     }
 
+    public Task StartAsync(CancellationToken cancellationToken)
+    {
+        _runTask = Task.Run(RunAsync, _cancellationTokenSource.Token);
+        return Task.CompletedTask;
+    }
+
+    public async Task StopAsync(CancellationToken cancellationToken)
+    {
+        _cancellationTokenSource.Cancel();
+        try
+        {
+            await _runTask!.ConfigureAwait(false);
+        }
+        catch (OperationCanceledException) { }
+        finally
+        {
+            _cancellationTokenSource.Dispose();
+            Clear();
+        }
+    }
+
+    private void Clear()
+    {
+        _text = null;
+
+        _entry.Shown = false;
+        _entry.Text = null;
+    }
+
+    private async Task RunAsync()
+    {
+        while (!_cancellationTokenSource.IsCancellationRequested)
+        {
+            Update();
+            await Task.Delay(1000, _cancellationTokenSource.Token).ConfigureAwait(false);
+        }
+    }
+
     private void Update()
     {
         if (!_configService.Current.EnableDtrEntry)
@@ -65,35 +102,4 @@ public sealed class DtrEntry : IDisposable, IHostedService
             _entry.Text = text;
         }
     }
-
-    private void Clear()
-    {
-        _text = null;
-
-        _entry.Shown = false;
-        _entry.Text = null;
-    }
-
-    private async Task RunAsync()
-    {
-        while (!_cancellationTokenSource.IsCancellationRequested)
-        {
-            Update();
-            await Task.Delay(1000, _cancellationTokenSource.Token).ConfigureAwait(false);
-        }
-    }
-
-    public Task StartAsync(CancellationToken cancellationToken)
-    {
-        _runTask = Task.Run(RunAsync, _cancellationTokenSource.Token);
-        return Task.CompletedTask;
-    }
-
-    public async Task StopAsync(CancellationToken cancellationToken)
-    {
-        _cancellationTokenSource.Cancel();
-        await _runTask!.ConfigureAwait(false);
-        _cancellationTokenSource.Dispose();
-        Clear();
-    }
 }