/// <summary>
/// Returns a collection of child elements.
/// </summary>
public static IEnumerable <DependencyObject> Elements(this DependencyObject item)
{
Contract.Requires <ArgumentNullException>(item != null);
Contract.Ensures(Contract.Result <IEnumerable <DependencyObject> >() != null);
ILinqTree <DependencyObject> adapter = new VisualTreeAdapter(item);
var res = adapter.Children();
Contract.Assume(res != null);
return(res);
}
/// <summary>
/// Returns a collection of descendant elements.
/// </summary>
public static IEnumerable <DependencyObject> Descendants(this DependencyObject item)
{
ILinqTree <DependencyObject> adapter = new VisualTreeAdapter(item);
foreach (var child in adapter.Children())
{
yield return(child);
foreach (var grandChild in child.Descendants())
{
yield return(grandChild);
}
}
}
/// <summary>
/// Returns a collection of ancestor elements.
/// </summary>
public static IEnumerable <DependencyObject> Ancestors(this DependencyObject item)
{
ILinqTree <DependencyObject> adapter = new VisualTreeAdapter(item);
var parent = adapter.Parent;
while (parent != null)
{
yield return(parent);
adapter = new VisualTreeAdapter(parent);
parent = adapter.Parent;
}
}