/// <summary>
/// Determines whether specified item should be shown in the master-detail view, given the current state
/// </summary>
/// <param name="item"></param>
/// <returns></returns>
protected bool IsMasterDetailCandidate(NavigationItem item)
{
return(!item.IsRoot() && (item.IsLeaf() || (!item.HasGrandchildren() && this.WindowState == WindowStateWide)));
}