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Pagination.php
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<?php
/*
* This file is part of the Evispa package.
*
* (c) Evispa <info@evispa.lt>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Silvestra\Component\Paginator;
/**
* @author Tadas Gliaubicas <tadas@evispa.lt>
*
* @since 15.3.26 14.16
*/
class Pagination implements \Iterator
{
/**
* @var int
*/
private $currentPage;
/**
* @var int
*/
private $perPage;
/**
* @var int
*/
private $pageCount;
/**
* @var int
*/
private $totalCount;
/**
* @var int
*/
private $page;
/**
* Constructor.
*
* @param int $currentPage
* @param int $perPage
* @param int $totalCount
*/
public function __construct($currentPage, $perPage, $totalCount)
{
$this->perPage = (int)$perPage;
$this->totalCount = (int)$totalCount;
$this->pageCount = intval(ceil($totalCount/ $perPage));
$this->setCurrentPage((int)$currentPage, $this->pageCount);
}
/**
* {@inheritdoc}
*/
public function current()
{
return $this->page;
}
/**
* {@inheritdoc}
*/
public function next()
{
$this->page++;
}
/**
* {@inheritdoc}
*/
public function key()
{
return $this->page;
}
/**
* {@inheritdoc}
*/
public function valid()
{
return $this->pageCount >= $this->page;
}
/**
* {@inheritdoc}
*/
public function rewind()
{
$this->page = 1;
}
/**
* Checks or is active page.
*
* @return bool
*/
public function isActivePage()
{
return $this->currentPage === $this->page;
}
/**
* Checks or is first page.
*
* @return bool
*/
public function isFirstPage()
{
return 1 === $this->currentPage;
}
/**
* Checks or is last page.
*
* @return bool
*/
public function isLastPage()
{
return $this->pageCount === $this->currentPage;
}
/**
* Get pagination current page.
*
* @return int
*/
public function getCurrentPage()
{
return $this->currentPage;
}
/**
* Get pagination per page.
*
* @return int
*/
public function getPerPage()
{
return $this->perPage;
}
/**
* Get pagination offset.
*
* @return int
*/
public function getOffset()
{
return ($this->currentPage - 1) * $this->perPage;
}
/**
* Get pagination page count.
*
* @return int
*/
public function getPageCount()
{
return $this->pageCount;
}
/**
* Get pagination total count.
*
* @return int
*/
public function getTotalCount()
{
return $this->totalCount;
}
/**
* Set current page.
*
* @param int $currentPage
* @param int $totalPage
*/
private function setCurrentPage($currentPage, $totalPage)
{
if (1 > $currentPage) {
$currentPage = 1;
}
if ((0 < $totalPage) && ($totalPage < $currentPage)) {
$currentPage = $totalPage;
}
$this->currentPage = $currentPage;
}
}