refactor: extract TopBar out of MainWindow.xaml — Phase 2, Commit 14

TopBar.xaml(.cs) takes the Row 0 top controls: logo/About button, REC/ON-AIR pills + status signs, avatar, Sign In/Start/End buttons. The avatar fetch (AvatarHttp/_loadedAvatarUrl/LoadAvatarImage/ShowAvatarFallback) moved into the control with async semantics preserved; the window grabs the control via FindName in its ctor and calls _topBar.RefreshAvatar() when IsConnected or AccountAvatarUrl changes (previously OnViewModelPropertyChanged -> LoadAvatarImage). AccountLight is pure binding (never touched by code-behind) so it moved with the XAML. Zero behavior change; build 0 warnings; 246 pass, only the 2 known failures. Also dropped the now-unused System.IO using from MainWindow.xaml.cs. Docs: ViewModels/index.md Phase 2 tracker updated in the same commit.
2026-08-30 09:13:47 -07:00
parent 691425288f
commit 90f5ad50dd
5 changed files with 197 additions and 165 deletions
@@ -0,0 +1,72 @@
+using System;
+using System.IO;
+using System.Net.Http;
+using System.Windows.Controls;
+using System.Windows.Media.Imaging;
+using ytLive.Helpers;
+using ytLive.ViewModels;
+
+namespace ytLive.Controls;
+
+public partial class TopBar : UserControl
+{
+    private static readonly HttpClient AvatarHttp = new() { Timeout = TimeSpan.FromSeconds(15) };
+    private string? _loadedAvatarUrl;
+
+    public TopBar()
+    {
+        InitializeComponent();
+        AvatarImage.Source = null;
+        AvatarInitial.Visibility = System.Windows.Visibility.Collapsed;
+    }
+
+    public void RefreshAvatar()
+    {
+        _ = LoadAvatarImageAsync();
+    }
+
+    private async System.Threading.Tasks.Task LoadAvatarImageAsync()
+    {
+        var vm = DataContext as MainViewModel;
+        var url = vm?.AccountAvatarUrl;
+        if (vm is not { IsConnected: true })
+        {
+            ShowAvatarFallback(null);
+            return;
+        }
+        if (string.IsNullOrWhiteSpace(url))
+        {
+            AppLog.Write("Avatar: connected but no profile image URL on the session");
+            ShowAvatarFallback(null);
+            return;
+        }
+        if (url == _loadedAvatarUrl && AvatarImage.Source != null) return;
+        try
+        {
+            var bytes = await AvatarHttp.GetByteArrayAsync(url);
+            using var ms = new MemoryStream(bytes);
+            var bitmap = new BitmapImage();
+            bitmap.BeginInit();
+            bitmap.CacheOption = BitmapCacheOption.OnLoad;
+            bitmap.StreamSource = ms;
+            bitmap.EndInit();
+            bitmap.Freeze();
+            _loadedAvatarUrl = url;
+            AvatarImage.Source = bitmap;
+            AvatarInitial.Visibility = System.Windows.Visibility.Collapsed;
+        }
+        catch (Exception ex)
+        {
+            AppLog.Write($"Avatar load failed ({url}): {ex.Message}");
+            ShowAvatarFallback(vm?.AccountDisplayName);
+        }
+    }
+
+    private void ShowAvatarFallback(string? name)
+    {
+        _loadedAvatarUrl = null;
+        AvatarImage.Source = null;
+        AvatarInitial.Text = string.IsNullOrWhiteSpace(name) ? "?" : name.Substring(0, 1).ToUpperInvariant();
+        AvatarInitial.Visibility = System.Windows.Visibility.Visible;
+    }
+}