void UpdateDefaultSupplementaryView(DefaultCell cell, NSString elementKind, NSIndexPath indexPath)
{
cell.Label.Text = ItemsSource.Group(indexPath).ToString();
if (cell is ItemsViewCell)
{
cell.ConstrainTo(GetLayoutSpanCount() * ItemsViewLayout.ConstrainedDimension);
}
}
protected virtual void UpdateDefaultCell(DefaultCell cell, NSIndexPath indexPath)
{
cell.Label.Text = ItemsSource[indexPath].ToString();
if (cell is ItemsViewCell constrainedCell)
{
ItemsViewLayout.PrepareCellForLayout(constrainedCell);
}
}
CGSize MeasureDefaultSupplementaryCell(NSString elementKind, nint section, NSString reuseId)
{
if (_measurementCellDefault == null)
{
if (reuseId == HorizontalDefaultSupplementalView.ReuseId)
{
_measurementCellDefault = new HorizontalDefaultSupplementalView(CGRect.Empty);
}
else if (reuseId == VerticalDefaultSupplementalView.ReuseId)
{
_measurementCellDefault = new VerticalDefaultSupplementalView(CGRect.Empty);
}
}
if (_measurementCellDefault == null)
{
return(CGSize.Empty);
}
UpdateDefaultSupplementaryView(_measurementCellDefault, elementKind, NSIndexPath.FromItemSection(0, section));
return(_measurementCellDefault.Measure());
}