1 files changed, 163 insertions, 0 deletions
diff --git a/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Bugzilla31330.cs b/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Bugzilla31330.cs
new file mode 100644
index 00000000..5f7e14ec
--- /dev/null
+++ b/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Bugzilla31330.cs
@@ -0,0 +1,163 @@
+using System;
+
+using Xamarin.Forms.CustomAttributes;
+using System.Collections.ObjectModel;
+using System.Windows.Input;
+
+
+#if UITEST
+using Xamarin.UITest.iOS;
+using Xamarin.UITest;
+using NUnit.Framework;
+#endif
+
+namespace Xamarin.Forms.Controls
+{
+	[Preserve (AllMembers = true)]
+	[Issue (IssueTracker.Bugzilla, 31330, "Disabled context actions appear enabled")]
+	public class Bugzilla31330 : TestContentPage
+	{
+		protected override void Init ()
+		{
+			var vm = new ListViewModel ();
+			BindingContext = vm;
+			vm.Init ();
+			var listview = new ListView ();
+			listview.SetBinding (ListView.ItemsSourceProperty, new Binding ("Items"));
+			listview.ItemTemplate = new DataTemplate (typeof(CustomTextCell));
+			listview.ItemSelected += (object sender, SelectedItemChangedEventArgs e) => {
+				(e.SelectedItem as ListItemViewModel).CanExecute = true;
+				((e.SelectedItem as ListItemViewModel).DeleteItemCommand as Command).ChangeCanExecute ();
+			};
+			// Initialize ui here instead of ctor
+			Content = listview;
+		}
+
+		[Preserve (AllMembers = true)]
+		public class CustomTextCell : TextCell
+		{
+			public CustomTextCell ()
+			{
+				SetBinding (TextProperty, new Binding ("Title"));
+				var deleteMenuItem = new MenuItem ();
+				deleteMenuItem.Text = "Delete";
+				deleteMenuItem.IsDestructive = true;
+				deleteMenuItem.SetBinding (MenuItem.CommandProperty, new Binding ("DeleteItemCommand"));
+				ContextActions.Add (deleteMenuItem);
+			}
+		}
+
+		[Preserve (AllMembers = true)]
+		public class ListViewModel : ViewModel
+		{
+			public void Init ()
+			{
+				Items.Add (new ListItemViewModel (this) { Title = string.Format ("Something {0}", Items.Count.ToString ()) });
+				Items.Add (new ListItemViewModel (this) { Title = string.Format ("Something {0}", Items.Count.ToString ()) });
+				Items.Add (new ListItemViewModel (this) { Title = string.Format ("Something {0}", Items.Count.ToString ()) });
+			}
+
+			public ObservableCollection<ListItemViewModel> Items { get; } = new ObservableCollection<ListItemViewModel>();
+
+			ICommand _disabledCommand;
+
+			public ICommand DisabledCommand {
+				get {
+					if (_disabledCommand == null) {
+						_disabledCommand = new Command (() => {
+						}, () => false);
+					}
+
+					return _disabledCommand;
+				}
+			}
+
+			ICommand _addItemCommand;
+
+			public ICommand AddItemCommand {
+				get {
+					if (_addItemCommand == null) {
+						_addItemCommand = new Command (() => Items.Add (new ListItemViewModel (this) { Title = string.Format ("Something {0}", Items.Count.ToString ()) }));
+					}
+
+					return _addItemCommand;
+				}
+			}
+		}
+
+		[Preserve (AllMembers = true)]
+		public class ListItemViewModel : ViewModel
+		{
+			public bool CanExecute = false;
+			readonly ListViewModel _listViewModel;
+
+			public ListItemViewModel (ListViewModel listViewModel)
+			{
+				if (listViewModel == null) {
+					throw new ArgumentNullException ("listViewModel");
+				}
+				_listViewModel = listViewModel;
+			}
+
+			public string Title { get; set; }
+
+			ICommand _deleteItemCommand;
+
+			public ICommand DeleteItemCommand {
+				get {
+					if (_deleteItemCommand == null) {
+						_deleteItemCommand = new Command (() => _listViewModel.Items.Remove (this), () => CanExecute);
+					}
+
+					return _deleteItemCommand;
+				}
+			}
+
+			ICommand _otherCommand;
+
+			public ICommand OtherCommand {
+				get {
+					if (_otherCommand == null) {
+						_otherCommand = new Command (() => {
+						}, () => false);
+					}
+
+					return _otherCommand;
+				}
+			}
+		}
+
+		#if UITEST
+		[Test]
+		public void Bugzilla31330Test ()
+		{
+			var screenBounds = RunningApp.Query (q => q.Raw ("* index:0"))[0].Rect;
+
+			var cell = RunningApp.Query (c => c.Marked ("Something 1")) [0];
+			var cell2 = RunningApp.Query (c => c.Marked ("Something 2")) [0];
+			if (RunningApp is iOSApp) {
+				RunningApp.DragCoordinates (screenBounds.Width - 10, cell.Rect.CenterY, 0, cell.Rect.CenterY);
+				RunningApp.WaitForElement (c => c.Marked ("Delete"));
+				RunningApp.Tap (c => c.Marked ("Delete"));
+				RunningApp.WaitForElement (c => c.Marked ("Something 1"));
+				RunningApp.Tap (c => c.Marked ("Something 2"));
+				RunningApp.DragCoordinates (screenBounds.Width - 10, cell2.Rect.CenterY, 0, cell2.Rect.CenterY);
+				RunningApp.Tap (c => c.Marked ("Delete"));
+				RunningApp.WaitForNoElement (c => c.Marked ("Something 2"));
+			}
+			else {
+				RunningApp.TouchAndHoldCoordinates (cell.Rect.CenterX, cell.Rect.CenterY);
+				RunningApp.WaitForElement (c => c.Marked ("Delete"));
+				RunningApp.Tap (c => c.Marked ("Delete"));
+				RunningApp.Back ();
+				RunningApp.WaitForElement (c => c.Marked ("Something 1"));
+				RunningApp.Tap (c => c.Marked ("Something 2"));
+				RunningApp.TouchAndHoldCoordinates (cell2.Rect.CenterX, cell2.Rect.CenterY);
+				RunningApp.Tap (c => c.Marked ("Delete"));
+				RunningApp.WaitForNoElement (c => c.Marked ("Something 2"));
+			}
+
+		}
+#endif
+	}
+}