private static void SetNavigationFocusElement(FrameworkElement focusedElement)
{
Visual navigationScope = GetNavigationScope(focusedElement);
if (navigationScope != null)
{
VisualWeakReference visualWeakReference = GetNavigationFocusElement(focusedElement);
SetNavigationFocusElement(navigationScope, new VisualWeakReference(focusedElement, navigationScope));
}
}
public override IEnumerable <Stop> GetGlobalStops(Visual scope, Visual currentElement, DependencyProperty navigationModeProperty)
{
if (IsStop((UIElement)scope) || scope == currentElement)
{
yield return(new Stop(scope));
}
VisualWeakReference navigationFocusElementReference = KeyboardNavigation.GetNavigationFocusElement(scope);
Visual navigationFocusElement = navigationFocusElementReference != null ? navigationFocusElementReference.Visual : null;
Stop[] stops = scope.VisualChildren.SelectMany(child => KeyboardNavigationTarget.GetGlobalStops(child, currentElement, navigationModeProperty)).ToArray();
if (stops.Any())
{
stops = stops.Where(stop => stop.Element == currentElement || stop.Element == navigationFocusElement).DefaultIfEmpty(stops.First()).ToArray();
foreach (Stop stop in stops)
{
yield return(stop);
}
}
}
public static void SetNavigationFocusElement(DependencyObject obj, VisualWeakReference value)
{
obj.SetValue(NavigationFocusElementProperty, value);
}
