public void RecycleCell(object data, FastCollectionTemplateSelector dataTemplate, VisualElement parent)
{
if (ViewCell == null)
{
var cellSize = new Size(Bounds.Width, Bounds.Height);
if (!(dataTemplate is FastCollectionTemplateSelector templateSelector))
{
throw new NotSupportedException(@"DataTemplate should be FastGridTemplateSelector");
}
var template = templateSelector.SelectTemplate(data) as FastCollectionDataTemplate;
ViewCell = template?.CreateContent() as FastCollectionCell;
cellSize = template?.CellSize ?? cellSize;
if (ViewCell != null)
{
ViewCell.BindingContext = data;
ViewCell.PrepareCell(cellSize);
ViewCell.Parent = parent;
_originalBindingContext = data;
_view = ConvertFormsToNative(ViewCell.View, new Rectangle(new Point(0, 0), cellSize));
}
if (_view == null)
{
return;
}
_view.AutoresizingMask = UIViewAutoresizing.All;
_view.ContentMode = UIViewContentMode.ScaleAspectFit;
_view.ClipsToBounds = true;
ContentView.AddSubview(_view);
}
else if (data == _originalBindingContext)
{
ViewCell.BindingContext = _originalBindingContext;
}
else
{
ViewCell.BindingContext = data;
}
var gr = GestureRecognizers;
if (gr != null && gr.Length > 0)
{
gr.ForEach(RemoveGestureRecognizer);
}
_tapGestureRecognizer = new UITapGestureRecognizer(Tapped);
AddGestureRecognizer(_tapGestureRecognizer);
}
protected override void Dispose(bool disposing)
{
if (_tapGestureRecognizer != null)
{
Device.BeginInvokeOnMainThread(() => {
RemoveGestureRecognizer(_tapGestureRecognizer);
_tapGestureRecognizer = null;
});
}
;
_view = null;
_originalBindingContext = null;
if (ViewCell != null)
{
ViewCell.BindingContext = null;
ViewCell.Parent = null;
ViewCell = null;
}
base.Dispose(disposing);
}