private static void EnableStateTriggersChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
var element = obj as FrameworkElement;
if (element == null)
{
throw new NotSupportedException("EnableStateTriggers can only be applied on elements of type System.Windows.FrameworkElement");
}
if ((bool)e.NewValue)
{
VisualStateManagerHook.Set(element);
}
else
{
VisualStateManagerHook.UnSet(element);
}
}
internal static void Set(FrameworkElement element)
{
var hook = new VisualStateManagerHook(element);
element.SetValue(VisualStateManagerHookProperty, hook);
}