153 lines
4.0 KiB
PHP
153 lines
4.0 KiB
PHP
<?php
|
|
|
|
declare(strict_types=1);
|
|
|
|
namespace GeorgRinger\NumberedPagination;
|
|
|
|
use TYPO3\CMS\Core\Pagination\PaginationInterface;
|
|
use TYPO3\CMS\Core\Pagination\PaginatorInterface;
|
|
|
|
final class NumberedPagination implements PaginationInterface
|
|
{
|
|
/**
|
|
* @var PaginatorInterface
|
|
*/
|
|
protected $paginator;
|
|
|
|
protected $maximumNumberOfLinks = 10;
|
|
protected $displayRangeStart = 0;
|
|
protected $displayRangeEnd = 0;
|
|
protected $hasLessPages = false;
|
|
protected $hasMorePages = false;
|
|
|
|
public function __construct(PaginatorInterface $paginator, int $maximumNumberOfLinks = 0)
|
|
{
|
|
$this->paginator = $paginator;
|
|
if ($maximumNumberOfLinks > 0) {
|
|
$this->maximumNumberOfLinks = $maximumNumberOfLinks;
|
|
}
|
|
$this->calculateDisplayRange();
|
|
}
|
|
|
|
public function getPreviousPageNumber(): ?int
|
|
{
|
|
$previousPage = $this->paginator->getCurrentPageNumber() - 1;
|
|
|
|
if ($previousPage > $this->paginator->getNumberOfPages()) {
|
|
return null;
|
|
}
|
|
|
|
return $previousPage >= $this->getFirstPageNumber()
|
|
? $previousPage
|
|
: null;
|
|
}
|
|
|
|
public function getNextPageNumber(): ?int
|
|
{
|
|
$nextPage = $this->paginator->getCurrentPageNumber() + 1;
|
|
|
|
return $nextPage <= $this->paginator->getNumberOfPages()
|
|
? $nextPage
|
|
: null;
|
|
}
|
|
|
|
public function getFirstPageNumber(): int
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
public function getLastPageNumber(): int
|
|
{
|
|
return $this->paginator->getNumberOfPages();
|
|
}
|
|
|
|
public function getStartRecordNumber(): int
|
|
{
|
|
if ($this->paginator->getCurrentPageNumber() > $this->paginator->getNumberOfPages()) {
|
|
return 0;
|
|
}
|
|
|
|
return $this->paginator->getKeyOfFirstPaginatedItem() + 1;
|
|
}
|
|
|
|
public function getEndRecordNumber(): int
|
|
{
|
|
if ($this->paginator->getCurrentPageNumber() > $this->paginator->getNumberOfPages()) {
|
|
return 0;
|
|
}
|
|
|
|
return $this->paginator->getKeyOfLastPaginatedItem() + 1;
|
|
}
|
|
|
|
/**
|
|
* @return int[]
|
|
*/
|
|
public function getAllPageNumbers(): array
|
|
{
|
|
return range($this->displayRangeStart, $this->displayRangeEnd);
|
|
}
|
|
|
|
public function getHasLessPages(): bool
|
|
{
|
|
return $this->hasLessPages;
|
|
}
|
|
|
|
public function getHasMorePages(): bool
|
|
{
|
|
return $this->hasMorePages;
|
|
}
|
|
|
|
/**
|
|
* @return int
|
|
*/
|
|
public function getMaximumNumberOfLinks(): int
|
|
{
|
|
return $this->maximumNumberOfLinks;
|
|
}
|
|
|
|
/**
|
|
* @return int
|
|
*/
|
|
public function getDisplayRangeStart(): int
|
|
{
|
|
return $this->displayRangeStart;
|
|
}
|
|
|
|
/**
|
|
* @return int
|
|
*/
|
|
public function getDisplayRangeEnd(): int
|
|
{
|
|
return $this->displayRangeEnd;
|
|
}
|
|
|
|
protected function calculateDisplayRange(): void
|
|
{
|
|
$numberOfPages = $this->paginator->getNumberOfPages();
|
|
$currentPage = $this->paginator->getCurrentPageNumber();
|
|
|
|
$maximumNumberOfLinks = $this->maximumNumberOfLinks;
|
|
if ($maximumNumberOfLinks > $numberOfPages) {
|
|
$maximumNumberOfLinks = $numberOfPages;
|
|
}
|
|
$delta = (int)($maximumNumberOfLinks / 2);
|
|
$this->displayRangeStart = $currentPage - $delta;
|
|
$this->displayRangeEnd = $currentPage + $delta - ($maximumNumberOfLinks % 2 === 0 ? 1 : 0);
|
|
if ($this->displayRangeStart < 1) {
|
|
$this->displayRangeEnd -= $this->displayRangeStart - 1;
|
|
}
|
|
if ($this->displayRangeEnd > $numberOfPages) {
|
|
$this->displayRangeStart -= $this->displayRangeEnd - $numberOfPages;
|
|
}
|
|
$this->displayRangeStart = (integer)max($this->displayRangeStart, 1);
|
|
$this->displayRangeEnd = (integer)min($this->displayRangeEnd, $numberOfPages);
|
|
$this->hasLessPages = $this->displayRangeStart > 1;
|
|
$this->hasMorePages = $this->displayRangeEnd < $this->paginator->getNumberOfPages();
|
|
}
|
|
|
|
public function getPaginator(): PaginatorInterface
|
|
{
|
|
return $this->paginator;
|
|
}
|
|
}
|