Settings

2024-02-15 20:59:36 +00:00
parent 6f5f6f8cfe
commit 41b9d5e0fc
5 changed files with 39 additions and 20 deletions
@@ -3,27 +3,31 @@ using System.Reflection;

 namespace Hyperbar.UI.Windows;

-public class ViewModelContentBinder(NavigationTargetCollection contents) : 
+public class ViewModelContentBinder(NavigationTargetCollection contents) :
    IViewModelContentBinder
 {
    public void Bind(FrameworkElement view,
        object context)
    {
+
        if (context.GetType().GetCustomAttributes<NavigationTargetAttribute>()
            is IEnumerable<NavigationTargetAttribute> attributes)
        {
            foreach (NavigationTargetAttribute attribute in attributes)
            {
-                if (view.FindName(attribute.Name) is FrameworkElement content)
+                if (!contents.ContainsKey(attribute.Name))
                {
-                    contents.Add(attribute.Name, content);
-                    void HandleUnloaded(object sender, RoutedEventArgs args)
+                    if (view.FindName(attribute.Name) is FrameworkElement content)
                    {
-                        view.Unloaded -= HandleUnloaded;
-                        contents.Remove(attribute.Name);
-                    }
+                        contents.Add(attribute.Name, content);
+                        void HandleUnloaded(object sender, RoutedEventArgs args)
+                        {
+                            view.Unloaded -= HandleUnloaded;
+                            contents.Remove(attribute.Name);
+                        }

-                    view.Unloaded += HandleUnloaded;
+                        view.Unloaded += HandleUnloaded;
+                    }
                }
            }
        }