Xamarin Forms - finding databound object from custom renderer while responding to a swipe - xamarin

Question

From an iOS swipe event, I am trying to figure out how to work my way back to the model databound to the ViewCell (model is my own Drive object, a simple POCO).
I am using a subclassed StackLayout ...
public class MainPageStackLayout : StackLayout { }
with a custom renderer...
[assembly: ExportRenderer(typeof(MainPageStackLayout), typeof(MainPageStackLayoutRenderer))]
namespace DriveLive.iOS
{
public class MainPageStackLayoutRenderer : VisualElementRenderer<StackLayout>
{
UISwipeGestureRecognizer swipeGestureRecognizer;
protected override void OnElementChanged(ElementChangedEventArgs<StackLayout> e)
{
base.OnElementChanged(e);
swipeGestureRecognizer = new UISwipeGestureRecognizer(() =>
{
//********************
Console.WriteLine("How to access the underlying model here?");
//********************
}) { Direction = UISwipeGestureRecognizerDirection.Left, NumberOfTouchesRequired = 1 };
if (e.NewElement == null)
{
if (swipeGestureRecognizer != null)
this.RemoveGestureRecognizer(swipeGestureRecognizer);
}
if (e.OldElement == null)
{
this.AddGestureRecognizer(swipeGestureRecognizer);
}
}
}
}
and the code that uses the MainPageStackLayout ...
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:local="clr-namespace:DriveLive"
x:Class="DriveLive.Views.MainPage">
<ListView x:Name="___drives" HasUnevenRows="True">
<ListView.ItemTemplate />
</ListView>
</ContentPage>
C#
public partial class MainPage : ContentPage
{
public MainPage()
{
InitializeComponent();
IDriveRespository repo = new DriveLive.Repository.Fakes.DriveRespository();
___drives.ItemsSource = repo.GetDrivesForUser(45); // returns a Drive list of objects
___drives.ItemTemplate = new DataTemplate(typeof(CustomViewCell));
___drives.SeparatorColor = Color.FromHex("#81C1B5");
}
}
public class CustomViewCell : ViewCell
{
bool _initialized = false;
StackLayout _cellStack;
public CustomViewCell()
{
_cellStack = new MainPageStackLayout()
{
Orientation = StackOrientation.Vertical,
HorizontalOptions = LayoutOptions.FillAndExpand
};
View = _cellStack;
var label = new Label() { FontAttributes = FontAttributes.Bold };
label.SetBinding(Label.TextProperty, new Binding("DestinationName"));
_cellStack.Children.Add(label);
}
}
From the handler for the UISwipeGestureRecognizer, how can I access the underlying Drive object which is databound to the ViewCell?

Answer 1

My issue is resolved by leveraging this piece of XForms.
ListView Interactivity - Context Actions
Credit goes to #skar's comment for pointing me in the right direction.