/// <summary>
/// IsExpandedProperty changed handler.
/// </summary>
/// <param name="obj">The dependency object.</param>
/// <param name="e">The event information.</param>
private static void OnIsExpandedPropertyChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
ExpanderView source = (ExpanderView)obj;
RoutedEventArgs args = new RoutedEventArgs();
if ((bool)e.NewValue)
{
source.OnExpanded(args);
}
else
{
source.OnCollapsed(args);
}
source.UpdateVisualState(source._useTransitions);
}
/// <summary>
/// IsNonExpandableProperty changed handler.
/// </summary>
/// <param name="obj">The dependency object.</param>
/// <param name="e">The event information.</param>
private static void OnIsNonExpandablePropertyChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
ExpanderView source = (ExpanderView)obj;
if ((bool)e.NewValue)
{
if (source.IsExpanded)
{
source._useTransitions = false;
source.IsExpanded = false;
}
}
else
{
source._useTransitions = true;
}
source.UpdateVisualState(source._useTransitions);
}