1 files changed, 168 insertions, 0 deletions
diff --git a/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/ListViewViewCellBinding.cs b/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/ListViewViewCellBinding.cs
new file mode 100644
index 00000000..dbc3c8ea
--- /dev/null
+++ b/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/ListViewViewCellBinding.cs
@@ -0,0 +1,168 @@
+using System;
+using System.Collections.ObjectModel;
+using System.Threading;
+using Xamarin.Forms.CustomAttributes;
+
+#if UITEST
+using NUnit.Framework;
+using Xamarin.UITest;
+#endif
+
+namespace Xamarin.Forms.Controls
+{
+
+	public class GenericValueConverter : IValueConverter
+	{
+		Func<object, object> _convert;
+		Func<object, object> _back;
+		public GenericValueConverter (Func<object, object> convert, Func<object, object> back = null)
+		{
+			_convert = convert;
+			_back = back;
+		}
+
+		public object Convert (object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
+		{
+			return _convert (value);
+		}
+
+		public object ConvertBack (object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
+		{
+			return _back (value);
+		}
+	}
+
+	[Preserve (AllMembers = true)]
+	public class Expense
+	{
+		public string Name { get; private set; }
+		public decimal Amount { get; private set; }
+
+		public Expense (string name, decimal amount)
+		{
+			Name = name;
+			Amount = amount;
+		}
+	}
+
+	[Preserve (AllMembers = true)]
+	public class ExpenseListViewCell : ViewCell
+	{
+		public ExpenseListViewCell ()
+		{
+			var expenseNameLabel = new Label ();
+			expenseNameLabel.SetBinding (Label.TextProperty, "Name");
+
+			var expenseAmountLabel = new Label ();
+			var expenseAmountToStringConverter = new GenericValueConverter (obj => string.Format ("{0:C}", ((decimal)obj)));
+			expenseAmountLabel.SetBinding (Label.TextProperty, new Binding ("Amount", converter: expenseAmountToStringConverter));
+
+			var layout = new StackLayout ();
+
+			layout.Children.Add (expenseNameLabel);
+			layout.Children.Add (expenseAmountLabel);
+
+			View = layout;
+		}
+
+		protected override void OnBindingContextChanged ()
+		{
+			// Fixme : this is happening because the View.Parent is getting 
+			// set after the Cell gets the binding context set on it. Then it is inheriting
+			// the parents binding context.
+			View.BindingContext = BindingContext;
+			base.OnBindingContextChanged ();
+		}
+	}
+
+	[Preserve (AllMembers = true)]
+	[Issue (IssueTracker.None, 0, "ListView ViewCell binding", PlatformAffected.All)]
+	public class ListViewViewCellBinding : TestContentPage
+	{
+
+		// Binding issue with view cells
+		public ObservableCollection<Expense> Expenses;
+
+		protected override void Init ()
+		{
+			//BindingContext = this;
+
+			Expenses = new ObservableCollection<Expense> {
+				new Expense ("1", 100.0m),
+				new Expense ("2", 200.0m),
+				new Expense ("3", 300.0m)
+			};
+
+			var listView = new ListView ();
+
+			listView.ItemsSource = Expenses;
+			listView.ItemTemplate = new DataTemplate (typeof (ExpenseListViewCell));
+
+			var layout = new StackLayout ();
+			int numberAdded = 3;
+
+			var label = new Label {
+				Text = numberAdded.ToString()
+			};
+
+			var removeBtn = new Button { Text = "Remove" };
+			removeBtn.Clicked += (s, e) => {
+				if (numberAdded > 0) {
+					numberAdded--;
+					Expenses.RemoveAt (0);
+					label.Text = numberAdded.ToString ();
+				}
+			};
+			var addBtn = new Button { Text = "Add" };
+			addBtn.Clicked += (s, e) => {
+				Expenses.Add (new Expense ("4", 400.0m));
+				numberAdded++;
+				label.Text = numberAdded.ToString ();
+			};
+
+			
+			layout.Children.Add (label);
+			layout.Children.Add (removeBtn);
+			layout.Children.Add (addBtn);
+			layout.Children.Add (listView);
+
+			Content = layout;
+		}
+
+#if UITEST
+		[Test]
+		public void ListViewViewCellBindingTestsAllElementsPresent ()
+		{
+			RunningApp.WaitForElement (q => q.Marked ("Remove"));
+			RunningApp.WaitForElement (q => q.Marked ("Add"));
+			RunningApp.WaitForElement (q => q.Marked ("1"));
+			RunningApp.WaitForElement (q => q.Marked ("$100.00"));
+			RunningApp.WaitForElement (q => q.Marked ("2"));
+			RunningApp.WaitForElement (q => q.Marked ("$200.00"));
+			RunningApp.WaitForElement (q => q.Marked ("3"));
+			RunningApp.WaitForElement (q => q.Marked ("$300.00"));
+
+			RunningApp.Screenshot ("All elements exist");
+		}
+
+		[Test]
+		public void ListViewViewCellBindingTestsAddListItem () 
+		{
+			RunningApp.Tap (q => q.Button ("Add"));
+			RunningApp.WaitForElement (q => q.Marked ("4"));
+			RunningApp.WaitForElement (q => q.Marked ("$400.00"));
+			RunningApp.Screenshot ("List item added");
+		}
+
+		[Test]
+		public void ListViewViewCellBindingTestsRemoveListItem () 
+		{
+			RunningApp.Tap (q => q.Button ("Remove"));
+			RunningApp.WaitForNoElement (q => q.Marked ("1"));
+			RunningApp.WaitForNoElement (q => q.Marked ("$100.00"));
+			RunningApp.Screenshot ("List item removed");
+		}
+#endif
+
+	}
+}