/**
* {@inheritdoc}
*/
public function submitForm(array &$form, FormStateInterface $form_state)
{
parent::submitForm($form, $form_state);
$line_item_type_storage = $this->entityManager->getStorage('commerce_line_item_type');
/** @var \Drupal\commerce_order\Entity\LineItemInterface $line_item */
$line_item = $this->entity;
/** @var \Drupal\commerce\PurchasableEntityInterface $purchased_entity */
$purchased_entity = $line_item->getPurchasedEntity();
/** @var \Drupal\commerce_order\Entity\LineItemTypeInterface $line_item_type */
$line_item_type = $line_item_type_storage->load($line_item->bundle());
$store = $this->selectStore($purchased_entity);
$cart = $this->cartProvider->getCart($line_item_type->getOrderTypeId(), $store);
if (!$cart) {
$cart = $this->cartProvider->createCart('default', $store);
}
$this->cartManager->addLineItem($cart, $line_item, $form_state->get(['settings', 'combine']));
drupal_set_message(t('@entity added to @cart-link.', ['@entity' => $purchased_entity->label(), '@cart-link' => Link::createFromRoute('your cart', 'commerce_cart.page')->toString()]));
}
