public static bool AreAnyPOIsVisible(PointOfInterestLocator point_of_interest_locator, params string[] pois)
{
foreach (string poi in pois)
{
List <DependencyObject> poi_list = point_of_interest_locator.GetPOI(poi);
if (null != poi_list)
{
foreach (DependencyObject dep_obj in poi_list)
{
FrameworkElement fe = dep_obj as FrameworkElement;
if (null != fe)
{
if (fe.Visibility == Visibility.Visible)
{
return(true);
}
}
}
}
}
return(false);
}
private void RefreshVisualsForCurrentStep()
{
int current_highlighter = 0;
if (null != route.CurrentStep)
{
poi_locator.Refresh();
bool conditions_satisfied = route.CurrentStep.PostCondition(poi_locator);
// Add a highlighter to each point of interest
{
string[] relevant_pois = conditions_satisfied ? route.CurrentStep.PostCondition_PointOfInterests : route.CurrentStep.PointOfInterests;
if (null != relevant_pois)
{
foreach (string poi in relevant_pois)
{
List <DependencyObject> poi_list = poi_locator.GetPOI(poi);
if (null != poi_list)
{
foreach (DependencyObject poi_do in poi_list)
{
FrameworkElement fe = poi_do as FrameworkElement;
if (null != fe && null != PresentationSource.FromVisual(fe))
{
try
{
Point fe_point = fe.PointToScreen(ZERO_POINT);
if (highlighters.Count <= current_highlighter)
{
highlighters.Add(new PointOfInterestHighlighterWindow());
}
int MARGIN = 5;
PointOfInterestHighlighterWindow highlighter = highlighters[current_highlighter];
highlighter.Left = fe_point.X - MARGIN;
highlighter.Top = fe_point.Y - MARGIN;
highlighter.Width = fe.ActualWidth + 2 * MARGIN;
highlighter.Height = fe.ActualHeight + 2 * MARGIN;
highlighter.Show();
++current_highlighter;
}
catch (Exception ex)
{
Logging.Warn(ex, "Problem highlighting a control for a wizard.");
}
}
}
}
}
}
}
if (conditions_satisfied)
{
this.TxtInstructions.Foreground = (route.CurrentStep.PostCondition_GreyInstructions) ? Brushes.LightGray : Brushes.Black;
if (true != CmdNext.IsEnabled)
{
CmdNext.IsEnabled = true;
CmdNext.BeginAnimation(OpacityProperty, opacity_animation);
}
}
else
{
this.TxtInstructions.Foreground = Brushes.Black;
if (false != CmdNext.IsEnabled)
{
CmdNext.IsEnabled = false;
CmdNext.BeginAnimation(OpacityProperty, null);
}
}
}
else
{
this.TxtInstructions.Foreground = Brushes.Black;
if (true != CmdNext.IsEnabled)
{
CmdNext.IsEnabled = true;
CmdNext.BeginAnimation(OpacityProperty, opacity_animation);
}
}
// Kill any unused highlighters
while (highlighters.Count > current_highlighter)
{
highlighters[current_highlighter].Close();
highlighters.RemoveAt(current_highlighter);
}
}