Feature: #89603 - Introduce native pagination for lists

See Issue #89603

Description

The TYPO3 core provides an interface to implement the native pagination of lists like arrays or query results of Extbase.

The foundation of that new interface \TYPO3\CMS\Core\Pagination\PaginatorInterface is that it’s type agnostic. It means, that it doesn’t define the type of paginatable objects. It’s up to the concrete implementations to enable pagination for specific types. The interface only forces you to reduce the incoming list of items to an iterable sub set of items.

Along with that interface, an abstract paginator class \TYPO3\CMS\Core\Pagination\AbstractPaginator has been created that implements the base pagination logic for any kind of Countable set of items while it leaves the processing of items to the concrete paginator class.

Impact

Two concrete paginators have been introduced. One for array and one for \TYPO3\CMS\Extbase\Persistence\QueryResultInterface objects.

The introduction of this native support for the pagination of lists enables the creation of a new paginate ViewHelper that is type agnostic.

Code-Example for the ArrayPaginator:

// use TYPO3\CMS\Core\Pagination\ArrayPaginator;

$itemsToBePaginated = ['apple', 'banana', 'strawberry', 'raspberry', 'ananas'];
$itemsPerPage = 2;
$currentPageNumber = 3;

$paginator = new ArrayPaginator($itemsToBePaginated, $currentPageNumber, $itemsPerPage);
$paginator->getNumberOfPages(); // returns 3
$paginator->getCurrentPageNumber(); // returns 3, basically just returns the input value
$paginator->getKeyOfFirstPaginatedItem(); // returns 5
$paginator->getKeyOfLastPaginatedItem(); // returns 5