Merge pull request #358 from gehongyan/breadcrubmitem-commandparameter

feat: Breadcrumb and its item may support CommandParameter/Binding

src/Ursa/Controls/Breadcrumb/Breadcrumb.cs

@@ -35,6 +35,17 @@ public class Breadcrumb: ItemsControl
         set => SetValue(CommandBindingProperty, value);
     }
 
+    public static readonly StyledProperty<IBinding?> CommandParameterBindingProperty = AvaloniaProperty.Register<Breadcrumb, IBinding?>(
+        nameof(CommandParameterBinding));
+
+    [AssignBinding]
+    [InheritDataTypeFromItems(nameof(ItemsSource))]
+    public IBinding? CommandParameterBinding
+    {
+        get => GetValue(CommandParameterBindingProperty);
+        set => SetValue(CommandParameterBindingProperty, value);
+    }
+
     public static readonly StyledProperty<object?> SeparatorProperty = AvaloniaProperty.Register<Breadcrumb, object?>(
         nameof(Separator));
 
@@ -112,6 +123,10 @@ public class Breadcrumb: ItemsControl
         {
             breadcrumbItem[!BreadcrumbItem.CommandProperty] = CommandBinding;
         }
+        if (!breadcrumbItem.IsSet(BreadcrumbItem.CommandParameterProperty) && CommandParameterBinding != null)
+        {
+            breadcrumbItem[!BreadcrumbItem.CommandParameterProperty] = CommandParameterBinding;
+        }
         if (!breadcrumbItem.IsSet(BreadcrumbItem.IconTemplateProperty) && IconTemplate != null)
         {
             breadcrumbItem.IconTemplate = IconTemplate;

src/Ursa/Controls/Breadcrumb/BreadcrumbItem.cs

@@ -39,6 +39,15 @@ public class BreadcrumbItem: ContentControl
         set => SetValue(CommandProperty, value);
     }
 
+    public static readonly StyledProperty<object?> CommandParameterProperty = AvaloniaProperty.Register<BreadcrumbItem, object?>(
+        nameof(CommandParameter));
+
+    public object? CommandParameter
+    {
+        get => GetValue(CommandParameterProperty);
+        set => SetValue(CommandParameterProperty, value);
+    }
+
     public static readonly StyledProperty<IDataTemplate?> IconTemplateProperty = AvaloniaProperty.Register<BreadcrumbItem, IDataTemplate?>(
         nameof(IconTemplate));
 
@@ -62,7 +71,7 @@ public class BreadcrumbItem: ContentControl
         base.OnPointerPressed(e);
         if (!IsReadOnly)
         {
-            Command?.Execute(null);
+            Command?.Execute(CommandParameter);
         }
     }
 }