changed.更了好多

LanMountainDesktop.Launcher/Views/ErrorWindow.axaml

@@ -3,16 +3,20 @@
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         xmlns:views="clr-namespace:LanMountainDesktop.Launcher.Views"
+        xmlns:ui="using:FluentAvalonia.UI.Controls"
+        xmlns:fi="using:FluentIcons.Avalonia"
         mc:Ignorable="d"
         x:Class="LanMountainDesktop.Launcher.Views.ErrorWindow"
         x:DataType="views:ErrorWindow"
         Title="LanMountain Desktop"
-        Width="560"
-        Height="320"
+        Width="760"
+        Height="460"
+        MinWidth="640"
+        MinHeight="420"
         CanResize="False"
         WindowStartupLocation="CenterScreen"
-        Background="#111318"
-        TransparencyLevelHint="None"
+        Background="{DynamicResource SolidBackgroundFillColorBaseBrush}"
+        TransparencyLevelHint="Mica, AcrylicBlur, None"
         Icon="/Assets/logo.ico">
   <Design.DataContext>
     <views:ErrorWindow />
@@ -20,79 +24,128 @@
 
   <Grid RowDefinitions="*,Auto">
     <Grid Grid.Row="0"
-          Margin="24"
+          Margin="28,24,28,20"
+          RowDefinitions="Auto,Auto,*"
           ColumnDefinitions="Auto,*">
       <Border x:Name="ErrorIconBorder"
               Grid.Column="0"
-              Width="52"
-              Height="52"
-              Margin="0,4,18,0"
-              Background="#2B161A"
-              CornerRadius="26"
+              Width="56"
+              Height="56"
+              Margin="0,0,18,0"
+              Background="{DynamicResource SystemFillColorCriticalBackgroundBrush}"
+              CornerRadius="28"
               VerticalAlignment="Top">
-        <TextBlock Text="!"
-                   FontSize="24"
-                   FontWeight="Bold"
-                   Foreground="#FFB4AB"
-                   HorizontalAlignment="Center"
-                   VerticalAlignment="Center" />
+        <fi:SymbolIcon Symbol="ErrorCircle"
+                       IconVariant="Regular"
+                       FontSize="28"
+                       Foreground="{DynamicResource SystemFillColorCriticalBrush}"
+                       HorizontalAlignment="Center"
+                       VerticalAlignment="Center" />
       </Border>
 
       <StackPanel Grid.Column="1"
-                  Spacing="10">
+                  Spacing="8">
         <TextBlock x:Name="TitleText"
                    Text="Launcher could not confirm startup"
-                   FontSize="20"
+                   FontSize="22"
                    FontWeight="SemiBold"
-                   Foreground="#F6F7FB"
+                   Foreground="{DynamicResource TextFillColorPrimaryBrush}"
                    TextWrapping="Wrap" />
 
         <TextBlock x:Name="ErrorMessageText"
                    Text="LanMountain Desktop did not reach the expected startup state."
                    FontSize="14"
-                   Foreground="#D2D7E1"
+                   Foreground="{DynamicResource TextFillColorSecondaryBrush}"
                    TextWrapping="Wrap"
                    LineHeight="22" />
-
-        <TextBlock x:Name="SuggestionText"
-                   Text="You can inspect logs, retry when the old process is gone, or reactivate the current instance."
-                   FontSize="13"
-                   Foreground="#9BA5B7"
-                   TextWrapping="Wrap"
-                   LineHeight="20" />
       </StackPanel>
+
+      <ui:FAInfoBar x:Name="SuggestionInfoBar"
+                    Grid.Row="1"
+                    Grid.Column="0"
+                    Grid.ColumnSpan="2"
+                    Margin="0,20,0,14"
+                    IsOpen="True"
+                    IsClosable="False"
+                    Severity="Warning"
+                    Title="Startup recovery"
+                    Message="You can inspect logs, wait for the current process, or activate the running desktop instance.">
+        <ui:FAInfoBar.IconSource>
+          <ui:FAFontIconSource Glyph="&#xF0288;"
+                               FontFamily="avares://fluenticons.resources.avalonia/Assets#Seagull Fluent Icons" />
+        </ui:FAInfoBar.IconSource>
+      </ui:FAInfoBar>
+
+      <Expander Grid.Row="2"
+                Grid.Column="0"
+                Grid.ColumnSpan="2"
+                Header="Diagnostic details"
+                IsExpanded="True">
+        <TextBox x:Name="ErrorDetailsTextBox"
+                 Margin="0,10,0,0"
+                 MinHeight="150"
+                 MaxHeight="190"
+                 AcceptsReturn="True"
+                 TextWrapping="Wrap"
+                 IsReadOnly="True"
+                 BorderThickness="0"
+                 FontSize="12"
+                 Text="Stage: launch&#x0a;Code: unknown"
+                 VerticalContentAlignment="Top" />
+      </Expander>
     </Grid>
 
     <Border Grid.Row="1"
-            Padding="24,16"
-            Background="#171A21">
-      <Grid ColumnDefinitions="*,Auto,Auto,Auto"
-            ColumnSpacing="8">
-        <Button x:Name="OpenLogButton"
-                Grid.Column="0"
-                Content="Open Logs"
-                MinWidth="108"
-                Height="34"
-                HorizontalAlignment="Left" />
+            Padding="18,14"
+            Background="{DynamicResource LayerOnMicaBaseAltFillColorDefaultBrush}">
+      <Grid ColumnDefinitions="Auto,*,Auto"
+            ColumnSpacing="12">
+        <StackPanel Grid.Column="0"
+                    Orientation="Horizontal"
+                    Spacing="8">
+          <Button x:Name="OpenLogButton"
+                  MinWidth="112"
+                  Height="34">
+            <StackPanel Orientation="Horizontal" Spacing="6">
+              <fi:SymbolIcon Symbol="FolderOpen" IconVariant="Regular" FontSize="16"/>
+              <TextBlock Text="Open Logs"/>
+            </StackPanel>
+          </Button>
 
-        <Button x:Name="SecondaryActionButton"
-                Grid.Column="1"
-                Content="Wait"
-                MinWidth="108"
-                Height="34"
-                IsVisible="False" />
+          <Button x:Name="CopyDetailsButton"
+                  MinWidth="100"
+                  Height="34">
+            <StackPanel Orientation="Horizontal" Spacing="6">
+              <fi:SymbolIcon Symbol="Copy" IconVariant="Regular" FontSize="16"/>
+              <TextBlock Text="Copy"/>
+            </StackPanel>
+          </Button>
+        </StackPanel>
 
-        <Button x:Name="ExitButton"
-                Grid.Column="2"
-                Content="Exit"
-                MinWidth="90"
-                Height="34" />
+        <StackPanel Grid.Column="2"
+                    Orientation="Horizontal"
+                    Spacing="8">
+          <Button x:Name="SecondaryActionButton"
+                  Content="Wait"
+                  MinWidth="96"
+                  Height="34"
+                  IsVisible="False" />
 
-        <Button x:Name="PrimaryActionButton"
-                Grid.Column="3"
-                Content="Retry"
-                MinWidth="108"
-                Height="34" />
+          <Button x:Name="ExitButton"
+                  MinWidth="92"
+                  Height="34">
+            <StackPanel Orientation="Horizontal" Spacing="6">
+              <fi:SymbolIcon Symbol="Dismiss" IconVariant="Regular" FontSize="16"/>
+              <TextBlock Text="Exit"/>
+            </StackPanel>
+          </Button>
+
+          <Button x:Name="PrimaryActionButton"
+                  Classes="accent"
+                  Content="Retry"
+                  MinWidth="112"
+                  Height="34" />
+        </StackPanel>
       </Grid>
     </Border>
   </Grid>

LanMountainDesktop.Launcher/Views/ErrorWindow.axaml.cs

@@ -1,8 +1,10 @@
 using System.Diagnostics;
 using Avalonia.Controls;
 using Avalonia.Input;
+using Avalonia.Input.Platform;
 using Avalonia.Interactivity;
 using Avalonia.Markup.Xaml;
+using FluentAvalonia.UI.Controls;
 using LanMountainDesktop.Launcher.Services;
 
 namespace LanMountainDesktop.Launcher.Views;
@@ -33,9 +35,21 @@ public partial class ErrorWindow : Window
 
     public void SetErrorMessage(string message)
     {
+        var normalizedMessage = string.IsNullOrWhiteSpace(message)
+            ? "LanMountain Desktop did not reach the expected startup state."
+            : message.Trim();
+        var firstLine = normalizedMessage
+            .Split(['\r', '\n'], StringSplitOptions.RemoveEmptyEntries)
+            .FirstOrDefault() ?? normalizedMessage;
+
         if (this.FindControl<TextBlock>("ErrorMessageText") is { } errorText)
         {
-            errorText.Text = message;
+            errorText.Text = firstLine;
+        }
+
+        if (this.FindControl<TextBox>("ErrorDetailsTextBox") is { } detailsTextBox)
+        {
+            detailsTextBox.Text = normalizedMessage;
         }
     }
 
@@ -120,6 +134,11 @@ public partial class ErrorWindow : Window
         {
             openLogButton.Click += OnOpenLogClick;
         }
+
+        if (this.FindControl<Button>("CopyDetailsButton") is { } copyDetailsButton)
+        {
+            copyDetailsButton.Click += OnCopyDetailsClick;
+        }
     }
 
     private void ApplyActionLayout(
@@ -138,9 +157,9 @@ public partial class ErrorWindow : Window
             titleText.Text = title;
         }
 
-        if (this.FindControl<TextBlock>("SuggestionText") is { } suggestionText)
+        if (this.FindControl<FAInfoBar>("SuggestionInfoBar") is { } suggestionInfoBar)
         {
-            suggestionText.Text = suggestion;
+            suggestionInfoBar.Message = suggestion;
         }
 
         if (this.FindControl<Button>("PrimaryActionButton") is { } primaryButton)
@@ -243,6 +262,28 @@ public partial class ErrorWindow : Window
         await Task.CompletedTask;
     }
 
+    private async void OnCopyDetailsClick(object? sender, RoutedEventArgs e)
+    {
+        try
+        {
+            var details = this.FindControl<TextBox>("ErrorDetailsTextBox")?.Text;
+            if (string.IsNullOrWhiteSpace(details))
+            {
+                details = this.FindControl<TextBlock>("ErrorMessageText")?.Text;
+            }
+
+            var clipboard = TopLevel.GetTopLevel(this)?.Clipboard;
+            if (clipboard is not null && !string.IsNullOrWhiteSpace(details))
+            {
+                await clipboard.SetTextAsync(details);
+            }
+        }
+        catch (Exception ex)
+        {
+            Debug.WriteLine($"[ErrorWindow] Failed to copy diagnostics: {ex}");
+        }
+    }
+
     private void ScanDevPaths()
     {
         var executable = OperatingSystem.IsWindows() ? "LanMountainDesktop.exe" : "LanMountainDesktop";

LanMountainDesktop.Launcher/Views/MultiInstancePromptWindow.axaml

@@ -0,0 +1,124 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:views="clr-namespace:LanMountainDesktop.Launcher.Views"
+        xmlns:ui="using:FluentAvalonia.UI.Controls"
+        xmlns:fi="using:FluentIcons.Avalonia"
+        mc:Ignorable="d"
+        x:Class="LanMountainDesktop.Launcher.Views.MultiInstancePromptWindow"
+        x:DataType="views:MultiInstancePromptWindow"
+        Title="LanMountain Desktop"
+        Width="620"
+        Height="360"
+        MinWidth="560"
+        MinHeight="330"
+        CanResize="False"
+        WindowStartupLocation="CenterScreen"
+        Background="{DynamicResource SolidBackgroundFillColorBaseBrush}"
+        TransparencyLevelHint="Mica, AcrylicBlur, None"
+        Icon="/Assets/logo.ico">
+  <Design.DataContext>
+    <views:MultiInstancePromptWindow />
+  </Design.DataContext>
+
+  <Grid RowDefinitions="*,Auto">
+    <Grid Grid.Row="0"
+          Margin="28,26,28,20"
+          RowDefinitions="Auto,Auto,*"
+          ColumnDefinitions="Auto,*">
+      <Border Grid.Column="0"
+              Width="52"
+              Height="52"
+              Margin="0,0,18,0"
+              Background="{DynamicResource SystemFillColorAttentionBackgroundBrush}"
+              CornerRadius="26"
+              VerticalAlignment="Top">
+        <fi:SymbolIcon Symbol="Desktop"
+                       IconVariant="Regular"
+                       FontSize="26"
+                       Foreground="{DynamicResource SystemFillColorAttentionBrush}"
+                       HorizontalAlignment="Center"
+                       VerticalAlignment="Center" />
+      </Border>
+
+      <StackPanel Grid.Column="1"
+                  Spacing="8">
+        <TextBlock Text="LanMountain Desktop is already running"
+                   FontSize="22"
+                   FontWeight="SemiBold"
+                   Foreground="{DynamicResource TextFillColorPrimaryBrush}"
+                   TextWrapping="Wrap" />
+        <TextBlock x:Name="MessageText"
+                   Text="Launcher found an existing desktop instance and did not start another process."
+                   FontSize="14"
+                   Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                   TextWrapping="Wrap"
+                   LineHeight="22" />
+      </StackPanel>
+
+      <ui:FAInfoBar Grid.Row="1"
+                    Grid.Column="0"
+                    Grid.ColumnSpan="2"
+                    Margin="0,22,0,14"
+                    IsOpen="True"
+                    IsClosable="False"
+                    Severity="Informational"
+                    Title="Repeated launch"
+                    Message="Your current setting is to show this prompt without opening the desktop automatically.">
+        <ui:FAInfoBar.IconSource>
+          <ui:FAFontIconSource Glyph="&#xF0288;"
+                               FontFamily="avares://fluenticons.resources.avalonia/Assets#Seagull Fluent Icons" />
+        </ui:FAInfoBar.IconSource>
+      </ui:FAInfoBar>
+
+      <TextBlock x:Name="DetailsText"
+                 Grid.Row="2"
+                 Grid.Column="0"
+                 Grid.ColumnSpan="2"
+                 FontSize="12"
+                 Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                 TextWrapping="Wrap"
+                 Text="No second Host process was created." />
+    </Grid>
+
+    <Border Grid.Row="1"
+            Padding="18,14"
+            Background="{DynamicResource LayerOnMicaBaseAltFillColorDefaultBrush}">
+      <Grid ColumnDefinitions="*,Auto">
+        <Button x:Name="CopyDetailsButton"
+                Grid.Column="0"
+                MinWidth="104"
+                Height="34"
+                HorizontalAlignment="Left">
+          <StackPanel Orientation="Horizontal" Spacing="6">
+            <fi:SymbolIcon Symbol="Copy" IconVariant="Regular" FontSize="16"/>
+            <TextBlock Text="Copy"/>
+          </StackPanel>
+        </Button>
+
+        <StackPanel Grid.Column="1"
+                    Orientation="Horizontal"
+                    Spacing="8">
+          <Button x:Name="CloseButton"
+                  MinWidth="92"
+                  Height="34">
+            <StackPanel Orientation="Horizontal" Spacing="6">
+              <fi:SymbolIcon Symbol="Dismiss" IconVariant="Regular" FontSize="16"/>
+              <TextBlock Text="Close"/>
+            </StackPanel>
+          </Button>
+          <Button x:Name="OpenDesktopButton"
+                  Classes="accent"
+                  MinWidth="136"
+                  Height="34">
+            <StackPanel Orientation="Horizontal" Spacing="6">
+              <fi:SymbolIcon Symbol="ArrowRight" IconVariant="Regular" FontSize="16"/>
+              <TextBlock Text="Open desktop"/>
+            </StackPanel>
+          </Button>
+        </StackPanel>
+      </Grid>
+    </Border>
+  </Grid>
+</Window>

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
+}