Fix more edge cases

2024-05-31 22:50:52 +01:00
parent 8f1a3252c6
commit c24538f545
16 changed files with 212 additions and 118 deletions
@@ -0,0 +1,77 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Avalonia.LogicalTree;
+using Toolkit.UI.Controls.Avalonia;
+
+namespace Toolkit.UI.Avalonia;
+
+public class ListBoxExtension
+{
+    public static readonly AttachedProperty<bool> IsItemInvokedEnabledProperty =
+        AvaloniaProperty.RegisterAttached<NavigationViewItem, bool>("IsItemInvokedEnabled",
+            typeof(ListBoxExtension), false);
+
+    public static readonly RoutedEvent<ItemInvokedEventArgs> ItemInvokedEvent =
+        RoutedEvent.Register<ItemInvokedEventArgs>("ItemInvoked",
+            RoutingStrategies.Bubble, typeof(ListBoxExtension));
+
+    static ListBoxExtension()
+    {
+        IsItemInvokedEnabledProperty.Changed.AddClassHandler<ListBoxItem>(OnIsItemClickEnabledPropertyChanged);
+    }
+
+    private static void OnIsItemClickEnabledPropertyChanged(ListBoxItem sender,
+        AvaloniaPropertyChangedEventArgs args)
+    {
+        bool TrySetupListBox()
+        {
+            if (sender.GetLogicalAncestors().OfType<ListBox>().FirstOrDefault() is ListBox listBox)
+            {
+                void OnItemInvoked(object? _, SelectionChangedEventArgs args)
+                {
+                    if (args.AddedItems is { Count: > 0 })
+                    {
+                        if (sender.DataContext == listBox.SelectedItem)
+                        {
+                            sender.RaiseEvent(new ItemInvokedEventArgs { RoutedEvent = ItemInvokedEvent });
+                        }
+                    }
+                }
+
+                if (sender.DataContext == listBox.SelectedItem)
+                {
+                    sender.RaiseEvent(new ItemInvokedEventArgs { RoutedEvent = ItemInvokedEvent });
+                }
+
+                listBox.SelectionChanged += OnItemInvoked;
+                return true;
+            }
+
+            return false;
+        }
+
+        if (!TrySetupListBox())
+        {
+            void OnAttachedToVisualTree(object? _, VisualTreeAttachmentEventArgs __)
+            {
+                sender.AttachedToVisualTree -= OnAttachedToVisualTree;
+                TrySetupListBox();
+            }
+
+            sender.AttachedToVisualTree += OnAttachedToVisualTree;
+        }
+    }
+
+    public static bool GetIsItemInvokedEnabled(ListBoxItem element) =>
+        element.GetValue(IsItemInvokedEnabledProperty);
+
+    public static void SetIsItemInvokedEnabled(ListBoxItem element, bool value) =>
+        element.SetValue(IsItemInvokedEnabledProperty, value);
+
+    public static void AddItemInvokedHandler(ListBoxItem element, EventHandler<ItemInvokedEventArgs> handler) =>
+        element.AddHandler(ItemInvokedEvent, handler);
+
+    public static void RemoveItemInvokedHandler(ListBoxItem element, EventHandler<ItemInvokedEventArgs> handler) =>
+        element.RemoveHandler(ItemInvokedEvent, handler);
+}