更新整理

WPFluent.Gallery/Views/Pages/MediaPage.xaml.cs

@@ -0,0 +1,54 @@
+
+
+using MediaViewModel = WPFluent.Gallery.ViewModels.Pages.MediaViewModel;
+
+namespace WPFluent.Gallery.Views.Pages;
+
+public partial class MediaPage : INavigableView<MediaViewModel>
+{
+    private readonly INavigationService _navigationService;
+
+
+    public MediaViewModel ViewModel { get; }
+
+    public MediaPage(MediaViewModel viewModel, INavigationService navigationService)
+    {
+        ViewModel = viewModel;
+        DataContext = this;
+        _navigationService = navigationService;
+
+        InitializeComponent();
+        Loaded += HandleLoaded;
+        Unloaded += HandleUnloaded;
+    }
+
+    private void HandleLoaded(object sender, RoutedEventArgs e)
+    {
+        INavigationView? navigationControl = _navigationService.GetNavigationControl();
+        if (
+            navigationControl?.BreadcrumbBar != null
+            && navigationControl.BreadcrumbBar.Visibility != Visibility.Collapsed
+        )
+        {
+            navigationControl.BreadcrumbBar.SetCurrentValue(VisibilityProperty, Visibility.Collapsed);
+        }
+
+    }
+
+    private void HandleUnloaded(object sender, RoutedEventArgs e)
+    {
+        INavigationView? navigationControl = _navigationService.GetNavigationControl();
+        if (
+            navigationControl?.BreadcrumbBar != null
+            && navigationControl.BreadcrumbBar.Visibility != Visibility.Visible
+        )
+        {
+            navigationControl.BreadcrumbBar.SetCurrentValue(VisibilityProperty, Visibility.Visible);
+        }
+
+
+
+        Loaded -= HandleLoaded;
+        Unloaded -= HandleUnloaded;
+    }
+}