Fixed various issues

2024-07-18 18:00:01 +01:00
parent 9010b3bf3c
commit e20890362e
9 changed files with 152 additions and 65 deletions
@@ -1,14 +1,17 @@
 using Avalonia.Controls;
 using Avalonia.Controls.Templates;
+using Avalonia.Data;
 using Avalonia.Interactivity;
 using Microsoft.Extensions.DependencyInjection;
 using Toolkit.Foundation;
+using Toolkit.UI.Controls.Avalonia;

 namespace Toolkit.Avalonia;

 public class ContentTemplate :
    IContentTemplate,
-    IDataTemplate
+    IDataTemplate,
+    IItemContainerTemplateSelector
 {
    public Control? Build(object? item)
    {
@@ -71,4 +74,64 @@ public class ContentTemplate :
    }

    public bool Match(object? data) => true;
+
+    public IDataTemplate? SelectTemplate(object? item, ItemsControl itemsControl)
+    {
+        if (item is IObservableViewModel observableViewModel)
+        {
+            if (observableViewModel.Provider is IServiceProvider provider)
+            {
+                Type itemType = item.GetType();
+                if (provider.GetRequiredKeyedService<IContentTemplateDescriptor>(itemType.Name.Replace("ViewModel", ""))
+                    is IContentTemplateDescriptor descriptor)
+                {
+                    if (provider.GetRequiredKeyedService(descriptor.TemplateType, descriptor.Key) is Control control)
+                    {
+                        async void HandleLoaded(object? sender, RoutedEventArgs args)
+                        {
+                            control.Loaded -= HandleLoaded;
+                            if (control.DataContext is object content)
+                            {
+                                if (content is IActivated activated)
+                                {
+                                    await activated.OnActivated();
+                                }
+                            }
+                        }
+
+                        async void HandleDataContextChanged(object? sender, EventArgs args)
+                        {
+                            if (control.DataContext is object content)
+                            {
+                                if (content is IActivated activated)
+                                {
+                                    await activated.OnActivated();
+                                }
+                            }
+                        }
+
+                        async void HandleUnloaded(object? sender, RoutedEventArgs args)
+                        {
+                            control.Unloaded -= HandleUnloaded;
+                            if (control.DataContext is object content)
+                            {
+                                if (content is IDeactivated deactivated)
+                                {
+                                    await deactivated.OnDeactivated();
+                                }
+                            }
+                        }
+
+                        control.Loaded += HandleLoaded;
+                        control.Unloaded += HandleUnloaded;
+                        control.DataContextChanged += HandleDataContextChanged; ;
+
+                        return new FuncDataTemplate(item.GetType(), (_, _) => control);
+                    }
+                }
+            }
+        }
+
+        return default;
+    }
 }