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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Yii\Bulma; |
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use InvalidArgumentException; |
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use JsonException; |
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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 array_merge; |
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use function is_array; |
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use function strtr; |
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/** |
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* The Bulma breadcrumb is a simple navigation component. |
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* |
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* ```php |
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* echo Breadcrumbs::widget()->items([ |
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* ['label' => 'Info'], |
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* ['label' => 'Contacts'], |
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* ]); |
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* ``` |
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* |
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* @link https://bulma.io/documentation/components/breadcrumb/ |
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*/ |
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class Breadcrumbs extends Widget |
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{ |
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private bool $encodeLabels = true; |
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private bool $encodeLinks = false; |
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private array $homeItem = []; |
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private bool $withoutHomeItem = false; |
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private string $itemTemplate = "<li>{icon}{link}</li>\n"; |
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private string $activeItemTemplate = "<li class=\"is-active\"><a aria-current=\"page\">{icon}{label}</li>\n"; |
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private array $items = []; |
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private array $options = []; |
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private array $itemsOptions = []; |
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protected function run(): string |
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{ |
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if (empty($this->items)) { |
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return ''; |
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} |
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$this->buildOptions(); |
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return |
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Html::beginTag('nav', $this->options) . "\n" . |
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Html::beginTag('ul', $this->itemsOptions) . "\n" . |
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implode('', $this->renderItems()) . |
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Html::endTag('ul') . "\n" . |
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Html::endTag('nav'); |
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} |
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/** |
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* Disable encoding for labels. |
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* |
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* @return $this |
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*/ |
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public function withoutEncodeLabels(): self |
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{ |
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$new = clone $this; |
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$new->encodeLabels = false; |
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return $new; |
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} |
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/** |
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* Do not render home item. |
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* |
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* @return self |
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*/ |
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public function withoutHomeItem(): self |
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{ |
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$new = clone $this; |
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$new->withoutHomeItem = true; |
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return $new; |
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} |
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/** |
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* The first item in the breadcrumbs (called home link). |
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* |
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* Please refer to {@see $items} on the format. |
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* |
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* @param array $value |
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* |
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* @return self |
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*/ |
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public function homeItem(array $value): self |
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{ |
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$new = clone $this; |
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$new->homeItem = $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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* @param string $value |
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* |
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* @return self |
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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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* 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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* @param string $value |
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* |
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* @return self |
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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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* List of items to appear in the breadcrumb. If this property is empty, the widget will not render anything. Each |
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* array element represents a single link in the breadcrumb 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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* @param array $value |
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* |
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* @return self |
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*/ |
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public function items(array $value): self |
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{ |
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$new = clone $this; |
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$new->items = $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 nav tag. |
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* |
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* @param array $value |
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* |
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* @return self |
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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 HTML attributes for the items widget. |
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* |
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* @param array $value |
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* |
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* @return self |
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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 itemsOptions(array $value): self |
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{ |
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$new = clone $this; |
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$new->itemsOptions = $value; |
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return $new; |
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} |
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private function buildOptions(): void |
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{ |
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if (!isset($this->options['id'])) { |
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$this->options['id'] = "{$this->getId()}-breadcrumbs"; |
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} |
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$this->options = $this->addOptions( |
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array_merge( |
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$this->options, |
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['aria-label' => 'breadcrumbs'] |
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), |
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'breadcrumb' |
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); |
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} |
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private function renderIcon(string $icon, array $iconOptions): string |
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{ |
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$html = ''; |
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if ($icon !== '') { |
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$html = Html::beginTag('span', $iconOptions) . |
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Html::tag('i', '', ['class' => $icon]) . |
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Html::endTag('span'); |
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} |
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return $html; |
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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 $template the template to be used to rendered the link. The token "{link}" will be replaced by the |
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* link. |
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* |
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* @throws InvalidArgumentException|JsonException if `$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', $this->encodeLabels); |
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$icon = ''; |
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$iconOptions = []; |
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if (isset($link['icon'])) { |
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$icon = $link['icon']; |
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} |
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if (isset($link['iconOptions']) && is_array($link['iconOptions'])) { |
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$iconOptions = $this->addOptions($iconOptions, 'icon'); |
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} |
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unset($link['icon'], $link['iconOptions']); |
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if (array_key_exists('label', $link)) { |
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$label = $encodeLabel ? Html::encode($link['label']) : $link['label']; |
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} else { |
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throw new InvalidArgumentException('The "label" element is required for each link.'); |
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} |
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if (isset($link['template'])) { |
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$template = $link['template']; |
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} |
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if ($this->encodeLinks === false) { |
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$link['encode'] = false; |
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} |
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if (isset($link['url'])) { |
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$options = $link; |
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unset($options['template'], $options['label'], $options['url'], $options['icon']); |
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$linkHtml = Html::a($label, $link['url'], $options); |
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} else { |
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$linkHtml = $label; |
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} |
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return strtr( |
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$template, |
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['{label}' => $label, '{link}' => $linkHtml, '{icon}' => $this->renderIcon($icon, $iconOptions)] |
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); |
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} |
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private function renderItems(): array |
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{ |
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$links = []; |
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if ($this->withoutHomeItem === false) { |
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$links[] = $this->renderHomeLink(); |
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} |
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foreach ($this->items 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 $links; |
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} |
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private function renderHomeLink(): string |
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{ |
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if ($this->homeItem === []) { |
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$this->homeItem = ['label' => 'Home', 'url' => '/']; |
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} |
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return $this->renderItem($this->homeItem, $this->itemTemplate); |
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} |
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} |
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