function LinkFormatter::viewElements

Overrides FormatterInterface::viewElements

File

core/modules/link/src/Plugin/Field/FieldFormatter/LinkFormatter.php, line 172

Class

LinkFormatter

Plugin implementation of the 'link' formatter.

Namespace

Code

public function viewElements(FieldItemListInterface $items, $langcode) {
    $element = [];
    $entity = $items->getEntity();
    $settings = $this->getSettings();
    foreach ($items as $delta => $item) {
        // By default use the full URL as the link text.
        $url = $this->buildUrl($item);
        $link_title = $url->toString();
        // If the title field value is available, use it for the link text.
        if (empty($settings['url_only']) && !empty($item->title)) {
            // Unsanitized token replacement here because the entire link title
            // gets auto-escaped during link generation in
            // \Drupal\Core\Utility\LinkGenerator::generate().
            $link_title = \Drupal::token()->replace($item->title, [
                $entity->getEntityTypeId() => $entity,
            ], [
                'clear' => TRUE,
            ]);
        }
        // Trim the link text to the desired length.
        if (!empty($settings['trim_length'])) {
            $link_title = Unicode::truncate($link_title, $settings['trim_length'], FALSE, TRUE);
        }
        if (!empty($settings['url_only']) && !empty($settings['url_plain'])) {
            $element[$delta] = [
                '#plain_text' => $link_title,
            ];
            if (!empty($item->_attributes)) {
                // Piggyback on the metadata attributes, which will be placed in the
                // field template wrapper, and set the URL value in a content
                // attribute.
                // @todo Does RDF need a URL rather than an internal URI here?
                // @see \Drupal\Tests\rdf\Kernel\Field\LinkFieldRdfaTest.
                $content = str_replace('internal:/', '', $item->uri);
                $item->_attributes += [
                    'content' => $content,
                ];
            }
        }
        else {
            $element[$delta] = [
                '#type' => 'link',
                '#title' => $link_title,
                '#options' => $url->getOptions(),
            ];
            $element[$delta]['#url'] = $url;
            if (!empty($item->_attributes)) {
                $element[$delta]['#options'] += [
                    'attributes' => [],
                ];
                $element[$delta]['#options']['attributes'] += $item->_attributes;
                // Unset field item attributes since they have been included in the
                // formatter output and should not be rendered in the field template.
                unset($item->_attributes);
            }
        }
    }
    return $element;
}