Added Scoped Handlers

2024-12-04 22:35:58 +00:00
parent 9b9330c8cc
commit 6454e1bb6f
12 changed files with 235 additions and 56 deletions
@@ -10,6 +10,8 @@ public class ContentTemplate :
    DataTemplateSelector,
    IContentTemplate
 {
+    private readonly Dictionary<string, DataTemplate> _cache = [];
+
    protected override DataTemplate? SelectTemplateCore(object item)
    {
        if (item is IObservableViewModel observableViewModel)
@@ -17,10 +19,19 @@ public class ContentTemplate :
            if (observableViewModel.Provider is IServiceProvider provider)
            {
                Type itemType = item.GetType();
-                if (provider.GetRequiredKeyedService<IContentTemplateDescriptor>(itemType.Name.Replace("ViewModel", ""))
+                string key = itemType.Name.Replace("ViewModel", "");
+
+                if (_cache.TryGetValue(key, out DataTemplate? cachedTemplate))
+                {
+                    return cachedTemplate;
+                }
+
+                if (provider.GetRequiredKeyedService<IContentTemplateDescriptor>(key)
                    is IContentTemplateDescriptor descriptor)
                {
-                    return CreateDataTemplate(descriptor);
+                    var newTemplate = CreateDataTemplate(descriptor);
+                    _cache[key] = newTemplate;
+                    return newTemplate;
                }
            }
        }
@@ -29,10 +40,7 @@ public class ContentTemplate :
    }

    protected override DataTemplate? SelectTemplateCore(object item,
-        DependencyObject container)
-    {
-        return SelectTemplateCore(item);
-    }
+        DependencyObject container) => SelectTemplateCore(item);

    private static DataTemplate CreateDataTemplate(IContentTemplateDescriptor descriptor)
    {
@@ -44,4 +52,4 @@ public class ContentTemplate :

        return (DataTemplate)XamlReader.Load(xamlString);
    }
-}
+}