public TvListItem GetTvItemFor(TItem item, int idx, int variableWidth)
{
if (!_cachedItems.TryGetValue(idx, out TvListItem tvitem))
{
var numColumns = _columns.Length;
tvitem = new TvListItem();
tvitem.Texts = _columns.Select(c => c.Transformer(item).PadRight(c.Width > 0 ? c.Width : variableWidth)).ToArray();
tvitem.Attributes = Enumerable.Range(0, numColumns)
.Select(colidx => _styleProvider.GetAttributesForItem(item, colidx))
.ToArray();
_cachedItems.Add(idx, tvitem);
}
return(tvitem);
}
