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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Yii\Bootstrap5; |
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use JsonException; |
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use RuntimeException; |
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use Yiisoft\Arrays\ArrayHelper; |
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use Yiisoft\Html\Html; |
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use function array_key_exists; |
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use function implode; |
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use function is_array; |
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use function strtr; |
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/** |
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* Button renders a bootstrap button. |
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* |
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* For example, |
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* |
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* ```php |
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* echo Breadcrumbs::widget() |
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* ->links(['label' => !empty($this->params['breadcrumbs']) ? $this->params['breadcrumbs'] : []]); |
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* ``` |
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*/ |
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final class Breadcrumbs extends Widget |
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{ |
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/** @psalm-var non-empty-string */ |
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private string $tag = 'ol'; |
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private bool $encodeLabels = true; |
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private bool $encodeTags = false; |
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private array $homeLink = ['label' => 'Home', 'url' => '/']; |
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private array $links = []; |
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private string $itemTemplate = "<li class=\"breadcrumb-item\">{link}</li>\n"; |
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private string $activeItemTemplate = "<li class=\"breadcrumb-item active\" aria-current=\"page\">{link}</li>\n"; |
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private array $navOptions = ['aria-label' => 'breadcrumb']; |
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private array $options = []; |
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public function render(): string |
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{ |
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if (empty($this->links)) { |
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return ''; |
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} |
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if (!isset($this->options['id'])) { |
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$this->options['id'] = "{$this->getId()}-breadcrumb"; |
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} |
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/** @psalm-suppress InvalidArgument */ |
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Html::addCssClass($this->options, ['widget' => 'breadcrumb']); |
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$links = []; |
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if ($this->homeLink !== []) { |
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$links[] = $this->renderItem($this->homeLink, $this->itemTemplate); |
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} |
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foreach ($this->links as $link) { |
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if (!is_array($link)) { |
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$link = ['label' => $link]; |
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} |
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$links[] = $this->renderItem($link, isset($link['url']) ? $this->itemTemplate : $this->activeItemTemplate); |
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} |
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return Html::tag( |
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'nav', |
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Html::tag($this->tag, implode('', $links), $this->options) |
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->encode($this->encodeTags) |
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->render(), |
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$this->navOptions |
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) |
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->encode($this->encodeTags) |
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->render(); |
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} |
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/** |
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* The template used to render each active item in the breadcrumbs. The token `{link}` will be replaced with the |
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* actual HTML link for each active item. |
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*/ |
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public function activeItemTemplate(string $value): self |
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{ |
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$new = clone $this; |
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$new->activeItemTemplate = $value; |
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return $new; |
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} |
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/** |
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* When tags Labels HTML should not be encoded. |
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*/ |
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public function withoutEncodeLabels(): self |
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{ |
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$new = clone $this; |
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$new->encodeLabels = false; |
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return $new; |
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} |
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/** |
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* The first hyperlink in the breadcrumbs (called home link). |
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* |
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* Please refer to {@see links} on the format of the link. |
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* |
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* If this property is not set, it will default to a link pointing with the label 'Home'. If this property is false, |
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* the home link will not be rendered. |
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*/ |
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public function homeLink(array $value): self |
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{ |
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$new = clone $this; |
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$new->homeLink = $value; |
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return $new; |
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} |
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/** |
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* The template used to render each inactive item in the breadcrumbs. The token `{link}` will be replaced with the |
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* actual HTML link for each inactive item. |
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*/ |
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public function itemTemplate(string $value): self |
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{ |
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$new = clone $this; |
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$new->itemTemplate = $value; |
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return $new; |
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} |
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/** |
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* List of links to appear in the breadcrumbs. If this property is empty, the widget will not render anything. Each |
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* array element represents a single link in the breadcrumbs with the following structure: |
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* |
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* ```php |
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* [ |
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* 'label' => 'label of the link', // required |
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* 'url' => 'url of the link', // optional, will be processed by Url::to() |
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* 'template' => 'own template of the item', // optional, if not set $this->itemTemplate will be used |
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* ] |
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* ``` |
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*/ |
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public function links(array $value): self |
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{ |
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$new = clone $this; |
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$new->links = $value; |
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return $new; |
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} |
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/** |
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* The HTML attributes for the widgets nav container tag. |
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* |
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* {@see Html::renderTagAttributes()} for details on how attributes are being rendered. |
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*/ |
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public function navOptions(array $value): self |
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{ |
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$new = clone $this; |
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$new->navOptions = $value; |
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return $new; |
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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 Html::renderTagAttributes()} for details on how attributes are being rendered. |
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*/ |
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public function options(array $value): self |
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{ |
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$new = clone $this; |
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$new->options = $value; |
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return $new; |
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} |
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/** |
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* The name of the breadcrumb container tag. |
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* |
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* @psalm-param non-empty-string $value |
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*/ |
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public function tag(string $value): self |
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{ |
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$new = clone $this; |
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$new->tag = $value; |
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return $new; |
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} |
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/** |
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* Renders a single breadcrumb item. |
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* |
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* @param array $link the link to be rendered. It must contain the "label" element. The "url" element is optional. |
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* @param string $template the template to be used to rendered the link. The token "{link}" will be replaced by the |
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* link. |
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* |
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* @throws JsonException|RuntimeException if `$link` does not have "label" element. |
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* |
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* @return string the rendering result |
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*/ |
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private function renderItem(array $link, string $template): string |
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{ |
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$encodeLabel = ArrayHelper::remove($link, 'encode', $this->encodeLabels); |
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if (array_key_exists('label', $link)) { |
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$label = $encodeLabel ? Html::encode($link['label']) : $link['label']; |
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} else { |
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throw new RuntimeException('The "label" element is required for each link.'); |
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} |
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if (isset($link['template'])) { |
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$template = $link['template']; |
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} |
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if (isset($link['url'])) { |
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$options = $link; |
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unset($options['template'], $options['label'], $options['url']); |
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$linkHtml = Html::a($label, $link['url'], $options)->encode($this->encodeTags); |
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} else { |
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$linkHtml = $label; |
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} |
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return strtr($template, ['{link}' => $linkHtml]); |
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} |
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} |
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