private static void UpdateElementLocation(Popup popup)
{
var occlutedRect = InputPane.GetForCurrentView().OccludedRect;
if (occlutedRect.Top > 0)
{
var element = FocusManager.GetFocusedElement() as FrameworkElement;
if (element != null)
{
SingleEvent.RegisterEvent(element,
(e, h) => e.LostFocus += h,
(e, h) => e.LostFocus -= h,
delegate { UpdateElementLocation(popup); });
var point = element.TransformToVisual(Window.Current.Content).TransformPoint(new Point(0, 0));
if (point.X + element.ActualHeight + 100 > occlutedRect.Top)
{
var offset = (point.X + element.ActualHeight + 100) - occlutedRect.Top - (double)popup.Tag;
if (offset > 20)
{
popup.VerticalOffset -= offset;
popup.Tag = (double)popup.Tag + offset;
}
}
}
}
}
