+ (void)showOnViewController:(UIViewController*)parentVC
{
    WDDNotificationsViewController *notificationsViewController
    = [parentVC.storyboard instantiateViewControllerWithIdentifier:NSStringFromClass(self)];
    notificationsViewController.parentVC = parentVC;

    WYPopoverController *popoverController = [[WYPopoverController alloc] initWithContentViewController:notificationsViewController];
    parentVC.notificationsPopover = popoverController;

    popoverController.theme.innerCornerRadius   = 0.0f;
    popoverController.theme.outerCornerRadius   = 0.0f;
    popoverController.theme.viewContentInsets   = UIEdgeInsetsZero;
    popoverController.theme.borderWidth         = 3.0f;
    popoverController.theme.arrowBase           = 24.0f;
    popoverController.theme.arrowHeight         = 14.0f;
    popoverController.theme.arrowBaseOffset     = 22.0f;
    popoverController.theme.arrowHeightOffset   = 10.0f;
    popoverController.theme.outerStrokeColor    = NOTIFICATIONS_GRAY_COLOR;
    popoverController.theme.strokeWidth         = 1.25f;
    popoverController.theme.fillTopColor        = [UIColor whiteColor];
    popoverController.theme.fillBottomColor     = [UIColor whiteColor];

    popoverController.delegate                  = notificationsViewController;

    CGRect frame = parentVC.navigationItem.titleView.frame;
    frame.size.height = frame.size.height - NOTIFICATIONS_BADGE_HEIGHT / 2 + 1;
    [popoverController presentPopoverFromRect:frame
                                       inView:parentVC.navigationItem.titleView.superview
                     permittedArrowDirections:WYPopoverArrowDirectionUp
                                     animated:YES];
}