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<?php |
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namespace Tleckie\Paginator; |
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use function ceil; |
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/** |
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* Class Paginator |
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* |
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* @package Tleckie\Paginator |
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* @author Teodoro Leckie Westberg <[email protected]> |
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*/ |
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class Paginator implements PaginatorInterface |
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{ |
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/** @var int */ |
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protected int $totalRecords; |
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/** @var int */ |
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protected int $itemsPerPage; |
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/** @var int */ |
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protected int $currentPage; |
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/** @var int */ |
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private int $firstPage = 1; |
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/** |
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* Paginator constructor. |
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* |
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* @param int $totalRecords |
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* @param int $itemsPerPage |
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* @param int $currentPage |
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*/ |
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public function __construct( |
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int $totalRecords, |
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int $itemsPerPage, |
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int $currentPage |
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) { |
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$this->setTotalRecords($totalRecords); |
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$this->setItemsPerPage($itemsPerPage); |
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$this->setCurrentPage($currentPage); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getTotalRecords(): int |
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{ |
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return $this->totalRecords; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function setTotalRecords(int $totalRecords): PaginatorInterface |
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{ |
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$this->totalRecords = $totalRecords; |
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return $this; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getItemsPerPage(): int |
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{ |
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return $this->itemsPerPage; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function setItemsPerPage(int $itemsPerPage): PaginatorInterface |
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{ |
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$this->itemsPerPage = $itemsPerPage; |
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return $this; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getCurrentPage(): int |
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{ |
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return $this->currentPage; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function setCurrentPage(int $currentPage): PaginatorInterface |
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{ |
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$this->currentPage = !$currentPage ? $this->firstPage : $currentPage; |
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return $this; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getFirstPage(): int |
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{ |
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return $this->firstPage; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getNextPage(): int |
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{ |
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if ($this->hasNext()) { |
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return $this->currentPage + $this->firstPage; |
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} |
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return $this->currentPage; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function hasNext(): bool |
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{ |
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return $this->currentPage < $this->getLastPage(); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getLastPage(): int |
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{ |
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return $this->getTotalPages(); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getTotalPages(): int |
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{ |
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return ceil($this->totalRecords / $this->itemsPerPage); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getPrevPage(): int |
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{ |
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if ($this->hasPrev()) { |
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return $this->currentPage - $this->firstPage; |
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} |
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return $this->currentPage; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function hasPrev(): bool |
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{ |
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return $this->currentPage > $this->firstPage; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getOffset(): int |
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{ |
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return ($this->currentPage - $this->firstPage) * $this->itemsPerPage; |
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} |
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} |
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teodoroleckie /
paginator
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