1 files changed, 86 insertions, 0 deletions
diff --git a/Xamarin.Forms.Core/CarouselView.cs b/Xamarin.Forms.Core/CarouselView.cs
new file mode 100644
index 00000000..62e9393e
--- /dev/null
+++ b/Xamarin.Forms.Core/CarouselView.cs
@@ -0,0 +1,86 @@
+using System;
+using Xamarin.Forms.Platform;
+
+namespace Xamarin.Forms
+{
+	[RenderWith(typeof(_CarouselViewRenderer))]
+	public class CarouselView : ItemsView, ICarouselViewController
+	{
+		public static readonly BindableProperty PositionProperty = BindableProperty.Create(nameof(Position), typeof(int), typeof(CarouselView), 0, BindingMode.TwoWay);
+
+		public static readonly BindableProperty ItemProperty = BindableProperty.Create(nameof(Item), typeof(object), typeof(CarouselView), 0, BindingMode.TwoWay);
+
+		object _lastItem;
+
+		int _lastPosition;
+
+		public CarouselView()
+		{
+			_lastPosition = 0;
+			_lastItem = null;
+			VerticalOptions = LayoutOptions.FillAndExpand;
+			HorizontalOptions = LayoutOptions.FillAndExpand;
+		}
+
+		public int Item
+		{
+			get { return (int)GetValue(ItemProperty); }
+		}
+
+		public int Position
+		{
+			get { return (int)GetValue(PositionProperty); }
+			set { SetValue(PositionProperty, value); }
+		}
+
+		void ICarouselViewController.SendPositionAppearing(int position)
+		{
+			ItemAppearing?.Invoke(this, new ItemVisibilityEventArgs(GetItem(position)));
+		}
+
+		void ICarouselViewController.SendPositionDisappearing(int position)
+		{
+			ItemDisappearing?.Invoke(this, new ItemVisibilityEventArgs(GetItem(position)));
+		}
+
+		void ICarouselViewController.SendSelectedItemChanged(object item)
+		{
+			if (item.Equals(_lastItem))
+				return;
+
+			ItemSelected?.Invoke(this, new SelectedItemChangedEventArgs(item));
+			_lastItem = item;
+		}
+
+		void ICarouselViewController.SendSelectedPositionChanged(int position)
+		{
+			if (_lastPosition == position)
+				return;
+
+			_lastPosition = position;
+			PositionSelected?.Invoke(this, new SelectedPositionChangedEventArgs(position));
+		}
+
+		public event EventHandler<SelectedItemChangedEventArgs> ItemSelected;
+
+		public event EventHandler<SelectedPositionChangedEventArgs> PositionSelected;
+
+		protected override SizeRequest OnMeasure(double widthConstraint, double heightConstraint)
+		{
+			var minimumSize = new Size(40, 40);
+			return new SizeRequest(minimumSize, minimumSize);
+		}
+
+		// non-public bc unable to implement on iOS
+		internal event EventHandler<ItemVisibilityEventArgs> ItemAppearing;
+
+		internal event EventHandler<ItemVisibilityEventArgs> ItemDisappearing;
+
+		object GetItem(int position)
+		{
+			var controller = (IItemViewController)this;
+			object item = controller.GetItem(position);
+			return item;
+		}
+	}
+}
+\ No newline at end of file