protected virtual int DeterminePosition(ScrollToRequestEventArgs args)
{
if (args.Mode == ScrollToMode.Position)
{
// TODO hartez 2018/08/28 15:40:03 Need to handle group indices here as well
return(args.Index);
}
return(ItemsViewAdapter.GetPositionForItem(args.Item));
}
int GetIndexFromTemplatedCell(global::Android.Views.View view)
{
int itemIndex = -1;
if (view is ItemContentView templatedCell)
{
var bContext = templatedCell?.Element?.BindingContext;
itemIndex = ItemsViewAdapter.GetPositionForItem(bContext);
}
return(itemIndex);
}
void MarkItemSelected(object selectedItem)
{
var position = ItemsViewAdapter.GetPositionForItem(selectedItem);
var selectedHolder = FindViewHolderForAdapterPosition(position);
if (selectedHolder == null)
{
return;
}
if (selectedHolder is SelectableViewHolder selectable)
{
selectable.IsSelected = true;
}
}
int GetCarouselViewCurrentIndex(int index)
{
var centeredView = this.GetCenteredView();
if (centeredView is ItemContentView templatedCell)
{
var bContext = templatedCell?.Element?.BindingContext;
index = ItemsViewAdapter.GetPositionForItem(bContext);
}
else
{
return(-1);
}
return(index);
}
protected override int DetermineTargetPosition(ScrollToRequestEventArgs args)
{
if (args.Mode == ScrollToMode.Element)
{
return(ItemsViewAdapter.GetPositionForItem(args.Item));
}
if (!Carousel.Loop)
{
return(args.Index);
}
if (_carouselViewLoopManager == null)
{
return(-1);
}
var carouselPosition = GetCarouselViewCurrentIndex(Carousel.Position);
var getGoIndex = _carouselViewLoopManager.GetGoToIndex(this, carouselPosition, args.Index);
return(getGoIndex);
}
