Toolkit.Avalonia

2024-04-13 14:55:33 +01:00
parent 862e7b2e34
commit 705d84e56d
13 changed files with 763 additions and 3 deletions
@@ -0,0 +1,60 @@
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Toolkit.Foundation;
+
+namespace Toolkit.Avalonia;
+
+public class ContentControlHandler(INavigationContext navigationContext) : 
+    INavigateHandler<ContentControl>
+{
+    public async Task Handle(Navigate<ContentControl> args,
+        CancellationToken cancellationToken)
+    {
+        if (args.Context is ContentControl contentControl)
+        {
+            if (args.Template is Control control)
+            {
+                TaskCompletionSource taskCompletionSource = new();
+                async void HandleLoaded(object? sender, RoutedEventArgs args)
+                {
+                    control.Loaded -= HandleLoaded;
+                    if (control.DataContext is object content)
+                    {
+                        if (content is IInitializer initializer)
+                        {
+                            await initializer.Initialize();
+                        }
+
+                        if (content is IActivated activated)
+                        {
+                            await activated.Activated();
+                        }
+                    }
+
+                    taskCompletionSource.SetResult();
+                }
+
+                async void HandleUnloaded(object? sender, RoutedEventArgs args)
+                {
+                    control.Unloaded -= HandleLoaded;
+                    if (control.DataContext is object content)
+                    {
+                        if (content is IDeactivated deactivated)
+                        {
+                            await deactivated.Deactivated();
+                        }
+                    }
+                }
+
+                control.Loaded += HandleLoaded;
+                control.Unloaded += HandleUnloaded;
+
+                contentControl.Content = control;
+                contentControl.DataContext = args.Content;
+
+                navigationContext.Set(control);
+                await taskCompletionSource.Task;
+            }
+        }
+    }
+}