public override IEnumerable <Stop> GetGlobalStops(Visual scope, Visual currentElement, DependencyProperty navigationModeProperty)
{
int scopeTabIndex = KeyboardNavigation.GetTabIndex(scope);
if (IsStop((UIElement)scope) || scope == currentElement)
{
yield return(new Stop(scope, scopeTabIndex));
}
// translate stops to have scope tab index instead of local tab index, local order is kept
foreach (Stop stop in scope.VisualChildren.SelectMany(child => KeyboardNavigationTarget.GetGlobalStops(child, currentElement, navigationModeProperty)).OrderBy(childStop => childStop.TabIndex))
{
yield return(new Stop(stop.Element, scopeTabIndex));
}
}
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 override IEnumerable <Stop> GetGlobalStops(Visual scope, Visual currentElement, DependencyProperty navigationModeProperty)
{
if (IsStop((UIElement)scope) || scope == currentElement)
{
yield return(new Stop(scope));
}
// add currentElement stop if it's a descendant of scope
if (scope.IsAncestorOf(currentElement))
{
IEnumerable <Stop> childrenStop = scope.VisualChildren.SelectMany(child => KeyboardNavigationTarget.GetGlobalStops(child, currentElement, navigationModeProperty));
yield return(childrenStop.First(childStop => childStop.Element == currentElement));
}
}
