Add project files.

2022-11-01 15:26:08 +00:00
parent daa7b59f22
commit 7e4f880821
408 changed files with 16863 additions and 0 deletions
@@ -0,0 +1,86 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Controls.Primitives;
+using Avalonia.Data;
+using Avalonia.Interactivity;
+using Avalonia.Markup.Xaml;
+using TheXamlGuy.UI.Avalonia;
+
+namespace TheXamlGuy.Framework.Avalonia;
+
+public class RouteExtension : MarkupExtension
+{
+    private static readonly AttachedProperty<object> RouteProperty =
+        AvaloniaProperty.RegisterAttached<RouteExtension, Control, object>("Route");
+
+    private readonly string name;
+    private readonly Binding routeBinding;
+
+    public RouteExtension(object route, string name)
+    {
+        routeBinding = route.ToBinding();
+        this.name = name;
+    }
+
+    private bool TryGetBinding(AvaloniaObject sender, out object? binding)
+    {
+        binding = sender.GetValue(StyledElement.DataContextProperty);
+        return binding is not null;
+    }
+
+    public override object? ProvideValue(IServiceProvider serviceProvider)
+    {
+        if (serviceProvider.GetService(typeof(IProvideValueTarget)) is IProvideValueTarget target)
+        {
+            if (target.TargetObject is TemplatedControl control)
+            {
+                if (!TryGetBinding(control, out object? binding))
+                {
+                    void HandleDataContextChanged(object? sender, EventArgs args)
+                    {
+                        if (TryGetBinding(control, out binding))
+                        {
+                            control.Loaded -= HandleLoaded;
+                            control.Bind(RouteProperty, routeBinding);
+
+                            if (control?.GetValue(RouteProperty) is IRouter route)
+                            {
+                                route.Add(name, control);
+                                control.ClearValue(RouteProperty);
+                            }
+                        }
+                    }
+
+                    control.DataContextChanged += HandleDataContextChanged;
+
+                    void HandleLoaded(object? sender, RoutedEventArgs args)
+                    {
+                        control.Loaded -= HandleLoaded;
+                        if (TryGetBinding(control, out binding))
+                        {
+                            control.Bind(RouteProperty, routeBinding);
+                            if (control?.GetValue(RouteProperty) is IRouter route)
+                            {
+                                route.Add(name, control);
+                                control.ClearValue(RouteProperty);
+                            }
+                        }
+                    }
+
+                    control.Loaded += HandleLoaded;
+                }
+                else
+                {
+                    control.Bind(RouteProperty, routeBinding);
+                    if (control?.GetValue(RouteProperty) is IRouter route)
+                    {
+                        route.Add(name, control);
+                        control.ClearValue(RouteProperty);
+                    }
+                }
+            }
+        }
+
+        return null;
+    }
+}