1 files changed, 89 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.Android/Renderers/ItemViewAdapter.cs b/Xamarin.Forms.Platform.Android/Renderers/ItemViewAdapter.cs
new file mode 100644
index 00000000..84dfa171
--- /dev/null
+++ b/Xamarin.Forms.Platform.Android/Renderers/ItemViewAdapter.cs
@@ -0,0 +1,89 @@
+using System.Collections.Generic;
+using Android.Support.V7.Widget;
+using Android.Views;
+
+namespace Xamarin.Forms.Platform.Android
+{
+	internal class ItemViewAdapter : RecyclerView.Adapter
+	{
+		readonly IVisualElementRenderer _renderer;
+		readonly Dictionary<int, object> _typeByTypeId;
+		readonly Dictionary<object, int> _typeIdByType;
+		int _nextItemTypeId;
+
+		public ItemViewAdapter(IVisualElementRenderer carouselRenderer)
+		{
+			_renderer = carouselRenderer;
+			_typeByTypeId = new Dictionary<int, object>();
+			_typeIdByType = new Dictionary<object, int>();
+			_nextItemTypeId = 0;
+		}
+
+		public override int ItemCount
+		{
+			get { return Element.Count; }
+		}
+
+		IItemViewController Controller
+		{
+			get { return Element; }
+		}
+
+		ItemsView Element
+		{
+			get { return (ItemsView)_renderer.Element; }
+		}
+
+		public override int GetItemViewType(int position)
+		{
+			// get item and type from ItemSource and ItemTemplate
+			object item = Controller.GetItem(position);
+			object type = Controller.GetItemType(item);
+
+			// map type as DataTemplate to type as Id
+			int id = default(int);
+			if (!_typeIdByType.TryGetValue(type, out id))
+			{
+				id = _nextItemTypeId++;
+				_typeByTypeId[id] = type;
+				_typeIdByType[type] = id;
+			}
+			return id;
+		}
+
+		public override void OnBindViewHolder(RecyclerView.ViewHolder holder, int position)
+		{
+			var carouselHolder = (CarouselViewHolder)holder;
+
+			object item = Controller.GetItem(position);
+			Controller.BindView(carouselHolder.View, item);
+		}
+
+		public override RecyclerView.ViewHolder OnCreateViewHolder(ViewGroup parent, int viewType)
+		{
+			// create view from type
+			object type = _typeByTypeId[viewType];
+			View view = Controller.CreateView(type);
+
+			// create renderer for view
+			IVisualElementRenderer renderer = Platform.CreateRenderer(view);
+			Platform.SetRenderer(view, renderer);
+
+			// package renderer + view
+			return new CarouselViewHolder(view, renderer);
+		}
+
+		class CarouselViewHolder : RecyclerView.ViewHolder
+		{
+			public CarouselViewHolder(View view, IVisualElementRenderer renderer) : base(renderer.ViewGroup)
+			{
+				VisualElementRenderer = renderer;
+				View = view;
+			}
+
+			public View View { get; }
+
+			public IVisualElementRenderer VisualElementRenderer { get; }
+		}
+	}
+}
+\ No newline at end of file