[Core] IEditorProvider.GetChildrenAsync (object)

4 files changed, 20 insertions, 1 deletions

diff --git a/Xamarin.PropertyEditing.Tests/MockEditorProvider.cs b/Xamarin.PropertyEditing.Tests/MockEditorProvider.cs
index 5aed81a..e2ca470 100644
--- a/Xamarin.PropertyEditing.Tests/MockEditorProvider.cs
+++ b/Xamarin.PropertyEditing.Tests/MockEditorProvider.cs
@@ -49,12 +49,16 @@ namespace Xamarin.PropertyEditing.Tests
 			return Task.FromResult (Activator.CreateInstance (realType));
 		}
 
+		public Task<IReadOnlyList<object>> GetChildrenAsync (object item)
+		{
+			return Task.FromResult<IReadOnlyList<object>> (Array.Empty<object> ());
+		}
+
 		public Task<IReadOnlyDictionary<Type, ITypeInfo>> GetKnownTypesAsync (IReadOnlyCollection<Type> knownTypes)
 		{
 			return Task.FromResult<IReadOnlyDictionary<Type, ITypeInfo>> (new Dictionary<Type, ITypeInfo> ());
 		}
 
-
 		private readonly Dictionary<object, IObjectEditor> editorCache = new Dictionary<object, IObjectEditor> ();
 	}
 }
\ No newline at end of file
diff --git a/Xamarin.PropertyEditing/IEditorProvider.cs b/Xamarin.PropertyEditing/IEditorProvider.cs
index bb88416..7c9f696 100644
--- a/Xamarin.PropertyEditing/IEditorProvider.cs
+++ b/Xamarin.PropertyEditing/IEditorProvider.cs
@@ -16,6 +16,11 @@ namespace Xamarin.PropertyEditing
 		Task<object> CreateObjectAsync (ITypeInfo type);
 
 		/// <summary>
+		/// Gets the children targets of the given target <paramref name="item"/>.
+		/// </summary>
+		Task<IReadOnlyList<object>> GetChildrenAsync (object item);
+
+		/// <summary>
 		/// Gets a mapping of known types (such as CommonSolidBrush) to a real-type analog.
 		/// </summary>
 		/// <remarks>
diff --git a/Xamarin.PropertyEditing/Reflection/ReflectionEditorProvider.cs b/Xamarin.PropertyEditing/Reflection/ReflectionEditorProvider.cs
index b8f2095..5eaa866 100644
--- a/Xamarin.PropertyEditing/Reflection/ReflectionEditorProvider.cs
+++ b/Xamarin.PropertyEditing/Reflection/ReflectionEditorProvider.cs
@@ -33,6 +33,11 @@ namespace Xamarin.PropertyEditing.Reflection
 			return Task.FromResult (instance);
 		}
 
+		public Task<IReadOnlyList<object>> GetChildrenAsync (object item)
+		{
+			return Task.FromResult ((IReadOnlyList<object>)Array.Empty<object> ());
+		}
+
 		public Task<IReadOnlyDictionary<Type, ITypeInfo>> GetKnownTypesAsync (IReadOnlyCollection<Type> knownTypes)
 		{
 			return Task.FromResult<IReadOnlyDictionary<Type, ITypeInfo>> (new Dictionary<Type, ITypeInfo> ());
diff --git a/Xamarin.PropertyEditing/ViewModels/CollectionPropertyViewModel.cs b/Xamarin.PropertyEditing/ViewModels/CollectionPropertyViewModel.cs
index b66ae6d..0314e46 100644
--- a/Xamarin.PropertyEditing/ViewModels/CollectionPropertyViewModel.cs
+++ b/Xamarin.PropertyEditing/ViewModels/CollectionPropertyViewModel.cs
@@ -256,6 +256,11 @@ namespace Xamarin.PropertyEditing.ViewModels
 				return editor;
 			}
 
+			public Task<IReadOnlyList<object>> GetChildrenAsync (object item)
+			{
+				return this.realProvider.GetChildrenAsync (item);
+			}
+
 			public Task<IReadOnlyDictionary<Type, ITypeInfo>> GetKnownTypesAsync (IReadOnlyCollection<Type> knownTypes)
 			{
 				return this.realProvider.GetKnownTypesAsync (knownTypes);