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<?php |
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namespace KadokWeb\Paginator; |
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/** |
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* Class KadokWeb Paginator |
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* |
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* @author Doka B. Silva <https://github.com/kadokweb> |
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* @package KadokWeb\Paginator |
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*/ |
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class Paginator |
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{ |
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/** @var int */ |
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private $page; |
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/** @var int */ |
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private $pages; |
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/** @var int */ |
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private $rows; |
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/** @var int */ |
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private $limit; |
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/** @var int */ |
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private $offset; |
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/** @var int */ |
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private $range; |
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/** @var string */ |
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private $link; |
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/** @var string */ |
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private $title; |
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/** @var string */ |
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private $class; |
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/** @var string */ |
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private $hash; |
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/** @var array */ |
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private $first; |
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/** @var array */ |
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private $last; |
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/** |
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* Paginator constructor. |
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* @param string|null $link |
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* @param string|null $title |
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* @param array|null $first |
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* @param array|null $last |
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*/ |
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public function __construct(string $link = null, string $title = null, array $first = null, array $last = null) |
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{ |
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$this->link = ($link ?? "?page="); |
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$this->title = ($title ?? "Página"); |
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$this->first = ($first ?? ["Primeira página", "<<"]); |
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$this->last = ($last ?? ["Última página", ">>"]); |
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} |
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/** |
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* @param int $rows |
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* @param int $limit |
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* @param int|null $page |
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* @param int $range |
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* @param string|null $hash |
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*/ |
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public function pager(int $rows, int $limit = 10, int $page = null, int $range = 3, string $hash = null): void |
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{ |
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$this->rows = $this->toPositive($rows); |
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$this->limit = $this->toPositive($limit); |
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$this->range = $this->toPositive($range); |
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$this->pages = (int)ceil($this->rows / $this->limit); |
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$this->page = ($page <= $this->pages ? $this->toPositive($page) : $this->pages); |
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$this->offset = (($this->page * $this->limit) - $this->limit >= 0 ? ($this->page * $this->limit) - $this->limit : 0); |
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$this->hash = (!empty($hash) ? "#{$hash}" : null); |
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if ($this->rows && $this->offset >= $this->rows) { |
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header("Location: {$this->link}" . ceil($this->rows / $this->limit)); |
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exit; |
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} |
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} |
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/** |
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* @return int |
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*/ |
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public function limit(): int |
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{ |
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return $this->limit; |
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} |
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/** |
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* @return int |
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*/ |
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public function offset(): int |
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{ |
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return $this->offset; |
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} |
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/** |
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* @return int |
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*/ |
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public function page() |
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{ |
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return $this->page; |
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} |
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/** |
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* @return int |
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*/ |
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public function pages() |
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{ |
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return $this->pages; |
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} |
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/** |
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* @param string $cssClass |
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* @return null|string |
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*/ |
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public function render(string $cssClass = "paginator"): ?string |
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{ |
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$this->class = $cssClass; |
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if ($this->rows > $this->limit): |
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$paginator = "<nav class=\"{$this->class}\">"; |
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$paginator .= "<a class='{$this->class}_item' title=\"{$this->first[0]}\" href=\"{$this->link}1{$this->hash}\">{$this->first[1]}</a>"; |
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$paginator .= $this->beforePages(); |
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$paginator .= "<span class=\"{$this->class}_item {$this->class}_active\">{$this->page}</span>"; |
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$paginator .= $this->afterPages(); |
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$paginator .= "<a class='{$this->class}_item' title=\"{$this->last[0]}\" href=\"{$this->link}{$this->pages}{$this->hash}\">{$this->last[1]}</a>"; |
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$paginator .= "</nav>"; |
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return $paginator; |
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endif; |
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return null; |
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} |
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/** |
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* @return null|string |
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*/ |
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private function beforePages(): ?string |
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{ |
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$before = null; |
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for ($iPag = $this->page - $this->range; $iPag <= $this->page - 1; $iPag++): |
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if ($iPag >= 1): |
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$before .= "<a class='{$this->class}_item' title=\"{$this->title} {$iPag}\" href=\"{$this->link}{$iPag}{$this->hash}\">{$iPag}</a>"; |
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endif; |
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endfor; |
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return $before; |
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} |
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/** |
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* @return string|null |
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*/ |
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private function afterPages(): ?string |
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{ |
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$after = null; |
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for ($dPag = $this->page + 1; $dPag <= $this->page + $this->range; $dPag++): |
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if ($dPag <= $this->pages): |
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$after .= "<a class='{$this->class}_item' title=\"{$this->title} {$dPag}\" href=\"{$this->link}{$dPag}{$this->hash}\">{$dPag}</a>"; |
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endif; |
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endfor; |
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return $after; |
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} |
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/** |
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* @param $number |
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* @return int |
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*/ |
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private function toPositive($number): int |
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{ |
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return ($number >= 1 ? $number : 1); |
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} |
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} |
kadokweb /
paginator
