/// <summary>
/// Occurs when the value of the IsNotificationVisible property is changed.
/// </summary>
/// <param name="e">
/// The event argument
/// </param>
private void OnIsNotificationVisibleChanged(AdvancedPropertyChangedEventArgs e)
{
if ((bool)e.NewValue)
{
if (_notificationBarViewModel == null)
{
var typeFactory = TypeFactory.Default;
_notificationBarViewModel = typeFactory.CreateInstance <NotificationBarViewModel>();
_uiCompositionService.Activate(_notificationBarViewModel, "NotificationRegion");
}
else
{
_uiCompositionService.Activate(_notificationBarViewModel);
}
}
else
{
_uiCompositionService.Deactivate(_notificationBarViewModel);
}
}
/// <summary>
/// Tries to activate an existing view model in the specified region name. If there is no view model alive, it will create one
/// and navigate to that view model.
/// </summary>
/// <typeparam name="TViewModel">The type of the view model.</typeparam>
/// <param name="uiCompositionService">The UI composition service.</param>
/// <param name="regionName">Name of the region.</param>
public static void Activate <TViewModel>(this IUICompositionService uiCompositionService, string regionName)
where TViewModel : IViewModel
{
uiCompositionService.Activate(typeof(TViewModel), regionName);
}