changed.更了好多

LanMountainDesktop.Launcher/Views/MultiInstancePromptWindow.axaml.cs

@@ -0,0 +1,76 @@
+using Avalonia.Controls;
+using Avalonia.Input.Platform;
+using Avalonia.Interactivity;
+using Avalonia.Markup.Xaml;
+
+namespace LanMountainDesktop.Launcher.Views;
+
+public partial class MultiInstancePromptWindow : Window
+{
+    private readonly TaskCompletionSource<MultiInstancePromptResult> _completionSource =
+        new(TaskCreationOptions.RunContinuationsAsynchronously);
+    private string _details = "LanMountain Desktop is already running.";
+
+    public MultiInstancePromptWindow()
+    {
+        AvaloniaXamlLoader.Load(this);
+        Loaded += OnLoaded;
+        Closed += (_, _) => _completionSource.TrySetResult(MultiInstancePromptResult.Close);
+    }
+
+    public Task<MultiInstancePromptResult> WaitForChoiceAsync() => _completionSource.Task;
+
+    public void SetDetails(int processId, string shellState)
+    {
+        _details = $"Existing host PID: {processId}\nShell state: {shellState}\nNo second Host process was created.";
+
+        if (this.FindControl<TextBlock>("DetailsText") is { } detailsText)
+        {
+            detailsText.Text = _details;
+        }
+    }
+
+    private void OnLoaded(object? sender, RoutedEventArgs e)
+    {
+        if (this.FindControl<Button>("CloseButton") is { } closeButton)
+        {
+            closeButton.Click += (_, _) => Complete(MultiInstancePromptResult.Close);
+        }
+
+        if (this.FindControl<Button>("OpenDesktopButton") is { } openDesktopButton)
+        {
+            openDesktopButton.Click += (_, _) => Complete(MultiInstancePromptResult.OpenDesktop);
+        }
+
+        if (this.FindControl<Button>("CopyDetailsButton") is { } copyDetailsButton)
+        {
+            copyDetailsButton.Click += OnCopyDetailsClick;
+        }
+    }
+
+    private void Complete(MultiInstancePromptResult result)
+    {
+        _completionSource.TrySetResult(result);
+        Close();
+    }
+
+    private async void OnCopyDetailsClick(object? sender, RoutedEventArgs e)
+    {
+        try
+        {
+            if (TopLevel.GetTopLevel(this)?.Clipboard is IClipboard clipboard)
+            {
+                await clipboard.SetTextAsync(_details);
+            }
+        }
+        catch
+        {
+        }
+    }
+}
+
+public enum MultiInstancePromptResult
+{
+    Close,
+    OpenDesktop
+}