public IReadOnlyList <PageNumberAndItemNumbers> AllPagesAndItemNumbers()
{
// The value may have already been initialized...
return(this.AllPages ?? (this.CurrentPage.HasValue
? PagingInfoCalculator.AllPagesAndItemNumbers(this)
: new PageNumberAndItemNumbers[0]));
}
/// <summary>
/// Calculates the full set of page numbers and item
/// numbers from given <paramref name="pageSize"/>
/// and <paramref name="totalItems"/> values.
/// </summary>
/// <param name="pageSize">
/// The <see cref="PageNumberAndSize.Size"/>
/// of each page in a "paged" collection.
/// </param>
/// <param name="totalItems">
/// The total number of items in a "paged" collection.
/// </param>
/// <returns>
/// The full set of page numbers and item numbers.
/// </returns>
/// <remarks>
/// Relays to the internal <see cref="PagingInfoCalculator.AllPagesAndItemNumbers(byte,int)"/>
/// method of <see cref="PagingInfoCalculator"/>.
/// </remarks>
public static IReadOnlyList <PageNumberAndItemNumbers> Calculate(
byte pageSize, int totalItems)
{
// Zero as page size is acceptable,
// indicating a single "unbounded" page.
Contract.Requires <ArgumentOutOfRangeException>(
totalItems >= 0, "The number of items in the list must not be negative!");
return(PagingInfoCalculator.AllPagesAndItemNumbers(pageSize, totalItems));
}