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using System;
using Xamarin.Forms.CustomAttributes;
using System.Collections.ObjectModel;
using System.Windows.Input;
using Xamarin.Forms.Internals;
#if UITEST
using Xamarin.UITest.iOS;
using Xamarin.UITest;
using NUnit.Framework;
#endif
namespace Xamarin.Forms.Controls.Issues
{
[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 ()
{
RunningApp.WaitForElement (c => c.Marked ("Something 2"));
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 __IOS__
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
}
#endif
}
}
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