/// <summary>
/// Returns all descendants of <typeparamref name="T" /> type for provided page and level deep.
/// </summary>
/// <typeparam name="T">Type of pages to look for.</typeparam>
/// <param name="pageData">The page for which to find descendants.</param>
/// <param name="levels">Level of how deep to look for descendants in page hiararchy.</param>
/// <returns>Returns sequence of PageData of descendants for provided page.</returns>
public static IEnumerable <T> GetDescendants <T>(this PageData pageData, int levels) where T : PageData
{
if (pageData == null || levels <= 0)
{
yield break;
}
foreach (var child in pageData.GetChildren <T>())
{
yield return(child);
if (levels <= 1)
{
continue;
}
foreach (var grandChild in child.GetDescendants <T>(levels - 1))
{
yield return(grandChild);
}
}
}
/// <summary>
/// Returns all child pages of PageData type for provided parent page.
/// </summary>
/// <param name="parentPage">Parent page of PageData type for which to return children.</param>
/// <returns>Returns PageDataCollection of child pages.</returns>
public static PageDataCollection GetChildren(this PageData parentPage)
{
return(parentPage.GetChildren <PageData>().ToPageDataCollection());
}
public static bool HasChildren(this PageData CurrentPage)
{
return(CurrentPage.GetChildren().Any());
}