/// <summary>
/// Enumerate DependencyObject continuing to VisualTree.
/// </summary>
/// <param name="start">Start DependencyObject.</param>
/// <param name="direction">Run direction.</param>
/// <returns>Enumerated DependencyObject.</returns>
#else
/// <summary>
/// VisualTreeに連なるDependencyObjectを列挙。
/// </summary>
/// <param name="start">列挙を開始するDependencyObject。</param>
/// <param name="direction">走査方向。</param>
/// <returns>列挙されたDependencyObject。</returns>
#endif
public static IDependencyObjectCollection VisualTree(this AppVar start, TreeRunDirection directionSrc = TreeRunDirection.Descendants)
{
var direction = start.App["Friendly.UWP.Core.TreeRunDirection." + directionSrc.ToString()]();
return(new DependencyObjectCollection(start.App.Type("Friendly.UWP.Core.TreeUtility").VisualTree(start, direction)));
}
