private IEnumerable <EventRouteItem> GetEventRouteItems(RoutedEvent routedEvent, UIElement originalSource, UIElement logicalSource)
{
IEnumerable <EventRouteItem> items = GetRoutedEventHandlers(routedEvent).Select(handler => new EventRouteItem(handler, originalSource, logicalSource, this));
if (routedEvent.RoutingStrategy == RoutingStrategy.Bubble ||
routedEvent.RoutingStrategy == RoutingStrategy.Tunnel)
{
UIElement visualParent = VisualParent as UIElement;
if (visualParent != null)
{
IEnumerable <EventRouteItem> parentItems = visualParent.GetEventRouteItems(routedEvent, originalSource, LogicalParent != visualParent ? visualParent : logicalSource);
if (routedEvent.RoutingStrategy == RoutingStrategy.Bubble)
{
items = items.Concat(parentItems);
}
else
{
items = parentItems.Concat(items);
}
}
}
return(items.ToArray());
}