BasketItem::listAction

public function listAction(PageNavigation $pageNavigation, array $select = [], array $filter = [], array $order = []): Page
{
	$select = empty($select) ? ['*'] : $select;
	$order = empty($order)? ['ID' => 'ASC'] : $order;

	$registry = SaleRegistry::getInstance(SaleRegistry::REGISTRY_TYPE_ORDER);

	/** @var SaleBasket $basketClass */
	$basketClass = $registry->getBasketClassName();

	$items = $basketClass::getList(
		[
			'select' => $select,
			'filter' => $filter,
			'order' => $order,
			'offset' => $pageNavigation->getOffset(),
			'limit' => $pageNavigation->getLimit(),
		]
	)->fetchAll();

	return new Page('BASKET_ITEMS', $items, function() use ($filter)
	{
		$registry = SaleRegistry::getInstance(SaleRegistry::REGISTRY_TYPE_ORDER);

		/** @var SaleBasket $basketClass */
		$basketClass = $registry->getBasketClassName();

		return count(
			$basketClass::getList(['filter'=>$filter])->fetchAll()
		);
	});
}