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<?php |
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declare(strict_types=1); |
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namespace App\Widget; |
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use Closure; |
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use Yiisoft\Data\Paginator\OffsetPaginator as Paginator; |
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use Yiisoft\Yii\Bootstrap4\Html; |
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use Yiisoft\Yii\Bootstrap4\Widget; |
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class OffsetPagination extends Widget |
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{ |
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private array $options = []; |
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private ?Closure $urlGenerator = null; |
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/** |
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* @var Paginator |
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*/ |
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private Paginator $paginator; |
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private int $pagesCount; |
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private int $currentPage; |
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private array $pages; |
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private bool $prepared; |
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public function paginator(?Paginator $paginator): self |
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{ |
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$this->paginator = $paginator; |
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$this->prepared = false; |
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return $this; |
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} |
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public function urlGenerator(Closure $generator): self |
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{ |
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$this->urlGenerator = $generator; |
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return $this; |
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} |
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public function isRequired(): bool |
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{ |
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return !isset($this->paginator) ? false : $this->paginator->isRequired(); |
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} |
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/** |
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* The HTML attributes for the widget container tag. The following special options are recognized. |
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* |
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* {@see \Yiisoft\Html\Html::renderTagAttributes()} for details on how attributes are being rendered. |
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*/ |
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public function options(array $value): self |
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{ |
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$this->options = $value; |
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return $this; |
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} |
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protected function run(): string |
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{ |
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if (!isset($this->options['id'])) { |
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$this->options['id'] = "{$this->getId()}-post-card"; |
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} |
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$this->initOptions(); |
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$this->prepareButtons(); |
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$this->registerPlugin('offset-pagination', $this->options); |
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return "\n" . Html::beginTag('nav', $this->options) |
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. "\n" . Html::beginTag('ul', ['class' => 'pagination']) |
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. "\n" . $this->renderButtons() |
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. "\n" . Html::endTag('ul') |
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. "\n" . Html::endTag('nav') |
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. "\n"; |
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} |
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protected function prepareButtons(): void |
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{ |
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if ($this->prepared) { |
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return; |
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} |
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$this->pagesCount = $this->paginator->getTotalPages(); |
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$this->currentPage = $this->paginator->getCurrentPage(); |
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if ($this->pagesCount > 9) { |
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if ($this->currentPage <= 4) { |
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$this->pages = [...range(1, 5), null, ...range($this->pagesCount - 2, $this->pagesCount)]; |
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} elseif ($this->pagesCount - $this->currentPage <= 4) { |
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$this->pages = [1, 2, null, ...range($this->pagesCount - 5, $this->pagesCount)]; |
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} else { |
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$this->pages = [ |
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1, |
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2, |
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null, |
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$this->currentPage - 1, |
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$this->currentPage, |
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$this->currentPage + 1, |
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null, |
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$this->pagesCount - 1, |
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$this->pagesCount, |
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]; |
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} |
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} else { |
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$this->pages = range(1, $this->pagesCount); |
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} |
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$this->prepared = true; |
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} |
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protected function renderButtons(): string |
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{ |
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$result = ''; |
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// `Previous` page |
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$prevUrl = $this->paginator->isOnFirstPage() ? null : $this->getPageLink($this->currentPage - 1); |
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$result .= Html::beginTag('li', ['class' => $prevUrl === null ? 'page-item disabled' : 'page-item']); |
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$result .= Html::a('Previous', $prevUrl, ['class' => 'page-link']); |
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$result .= Html::endTag('li'); |
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// Numeric buttons |
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foreach ($this->pages as $page) { |
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$isDisabled = $this->currentPage === $page || $page === null; |
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$result .= Html::beginTag('li', ['class' => $isDisabled ? 'page-item disabled' : 'page-item']); |
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if ($page === null) { |
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$result .= Html::tag('span', '…', ['class' => 'page-link']); |
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} else { |
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$result .= Html::a((string)$page, $this->getPageLink($page), ['class' => 'page-link']); |
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} |
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$result .= Html::endTag('li'); |
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} |
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// `Next` page |
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$nextUrl = $this->paginator->isOnLastPage() ? null : $this->getPageLink($this->currentPage + 1); |
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$result .= Html::beginTag('li', ['class' => $nextUrl === null ? 'page-item disabled' : 'page-item']); |
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$result .= Html::a('Next', $nextUrl, ['class' => 'page-link']); |
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$result .= Html::endTag('li'); |
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return $result; |
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} |
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protected function getPageLink(int $page): ?string |
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{ |
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return $this->urlGenerator === null ? null : (string)($this->urlGenerator)($page); |
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} |
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protected function initOptions(): void |
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{ |
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Html::addCssClass($this->options, [ |
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'aria-label' => 'Page navigation', |
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]); |
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} |
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} |
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yiisoft /
yii-demo
