repeater view

src/App/Controls/RepeaterView.cs

@@ -0,0 +1,64 @@
+using System.Collections;
+using Xamarin.Forms;
+
+namespace Bit.App.Controls
+{
+    public class RepeaterView : StackLayout
+    {
+        public static readonly BindableProperty ItemTemplateProperty = BindableProperty.Create(
+            nameof(ItemTemplate), typeof(DataTemplate), typeof(RepeaterView), default(DataTemplate));
+
+        public static readonly BindableProperty ItemsSourceProperty = BindableProperty.Create(
+            nameof(ItemsSource), typeof(ICollection), typeof(RepeaterView), null, BindingMode.OneWay,
+            propertyChanged: ItemsChanged);
+
+        public RepeaterView()
+        {
+            Spacing = 0;
+        }
+
+        public ICollection ItemsSource
+        {
+            get => GetValue(ItemsSourceProperty) as ICollection;
+            set => SetValue(ItemsSourceProperty, value);
+        }
+
+        public DataTemplate ItemTemplate
+        {
+            get => GetValue(ItemTemplateProperty) as DataTemplate;
+            set => SetValue(ItemTemplateProperty, value);
+        }
+
+        protected virtual View ViewFor(object item)
+        {
+            View view = null;
+            var template = ItemTemplate;
+            if(template != null)
+            {
+                if(template is DataTemplateSelector selector)
+                {
+                    template = selector.SelectTemplate(item, this);
+                }
+                var content = template.CreateContent();
+                view = content is View ? content as View : ((ViewCell)content).View;
+                view.BindingContext = item;
+            }
+            return view;
+        }
+
+        private static void ItemsChanged(BindableObject bindable, object oldValue, object newValue)
+        {
+            if(bindable is RepeaterView control)
+            {
+                control.Children.Clear();
+                if(newValue is ICollection items)
+                {
+                    foreach(var item in items)
+                    {
+                        control.Children.Add(control.ViewFor(item));
+                    }
+                }
+            }
+        }
+    }
+}