public PagedCollectionView(IPagedCollectionQuery query, int total, IEnumerable <T> items)
{
this.Items = items;
this.Offset = query.Offset;
this.Limit = query.Limit;
this.Total = total;
}
/// <summary>
/// Get the page to skip to within total, this will alter the offset
/// stored in this class to 0 if the skip to target is > total. If you don't want
/// the offset to alter pass null for total (or no arg) and it will just calculate the skip
/// value.
/// </summary>
/// <remarks>
/// This makes it easy to use with the common pattern for CollectionViews since you can
/// just pass the query along after calling this function and it will have been
/// altered as needed.
/// </remarks>
/// <param name="query">The query.</param>
/// <param name="total">The total count of items in the collection to query or null for no check.</param>
/// <returns></returns>
public static int SkipTo(this IPagedCollectionQuery query, int?total = null)
{
var skipTo = query.Offset * query.Limit;
if (total.HasValue && skipTo > total)
{
skipTo = 0;
query.Offset = 0;
}
return(skipTo);
}
