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<?php |
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declare(strict_types=1); |
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namespace Selami\View\Twig\Functions; |
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use Selami\View\FunctionInterface; |
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class Pagination implements FunctionInterface |
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{ |
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const PAGE_GROUP_LIMIT = 3; |
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private $total; |
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private $current; |
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private $linkTemplate; |
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private $parentTemplate; |
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private $itemTemplate; |
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private $linkItemTemplate; |
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private $ellipsesTemplate; |
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public function __construct( |
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int $total, |
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int $current, |
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string $linkTemplate, |
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string $parentTemplate, |
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string $itemTemplate, |
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string $linkItemTemplate, |
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string $ellipsesTemplate |
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) { |
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$this->total = $total; |
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$this->current = $current; |
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$this->linkTemplate = $linkTemplate; |
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$this->parentTemplate = $parentTemplate; |
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$this->itemTemplate = $itemTemplate; |
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$this->linkItemTemplate = $linkItemTemplate; |
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$this->ellipsesTemplate = $ellipsesTemplate; |
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} |
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public function run(): string |
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{ |
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$items = ''; |
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$renderedEllipses = 0; |
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$useEllipses = ($this->total > 10) ? 1 : 0; |
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for ($itemIndex=1; $itemIndex <= $this->total; $itemIndex++) { |
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$item = $this->getItem($itemIndex, $renderedEllipses, $useEllipses); |
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$items .= $item[0]; |
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$renderedEllipses = $item[1]; |
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} |
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return str_replace('(items)', $items, $this->parentTemplate); |
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} |
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private function getItem(int $itemIndex, $renderedEllipses, $useEllipses) : array |
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{ |
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$values = [ |
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'(item_class)' => '', |
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'(href)' => '', |
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'(link_class)' => '', |
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'(text)' => '' |
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]; |
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$class = $this->getClasses($itemIndex); |
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$values['(link_class)'] = $class; |
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$values['(item_class)'] = $class; |
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$values['(text)'] = $itemIndex; |
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$values['(href)'] = str_replace('(page_num)', $itemIndex, $this->linkTemplate); |
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$itemData = $this->determineUseLink($itemIndex, $values, $useEllipses, $renderedEllipses); |
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return $itemData; |
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} |
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private function determineUseLink(int $itemIndex, array $values, int $useEllipses, int $renderedEllipses) : array |
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{ |
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if ($useEllipses === 1) { |
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return $this->useEllipses($itemIndex, $values, $renderedEllipses); |
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} |
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$link = strtr($this->linkItemTemplate, $values); |
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$thisItemTemplate = str_replace( |
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array('(link)'), |
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array($link), |
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$this->itemTemplate |
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); |
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$item = strtr($thisItemTemplate, $values); |
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return [$item, $renderedEllipses]; |
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} |
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private function useEllipses(int $itemIndex, array $values, int $renderedEllipses) |
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{ |
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$pageGroupLimit = self::PAGE_GROUP_LIMIT; |
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if (($itemIndex <= $pageGroupLimit) |
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|| ($itemIndex >= ($this->current-1) && $itemIndex <= ($this->current+1)) |
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|| ($itemIndex >= ($this->total-2)) |
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) { |
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return $this->returnLink($values); |
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} |
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return $this->returnEllipses($renderedEllipses); |
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} |
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private function returnEllipses(int $renderedEllipses) |
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{ |
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$item = ''; |
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if ($renderedEllipses === 0) { |
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$item = $this->ellipsesTemplate; |
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} |
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$renderedEllipses = 1; |
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return [$item, $renderedEllipses]; |
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} |
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private function returnLink($values) |
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{ |
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$renderedEllipses = 0; |
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$link = strtr($this->linkItemTemplate, $values); |
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$thisItemTemplate = str_replace( |
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array('(link)'), |
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array($link), |
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$this->itemTemplate |
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); |
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$item = strtr($thisItemTemplate, $values); |
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return [$item, $renderedEllipses]; |
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} |
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private function getClasses(int $itemIndex) |
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{ |
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if ($itemIndex === $this->current) { |
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return 'active'; |
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} |
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return ''; |
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} |
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} |
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selamiphp /
views
