/core/modules/link/src/Plugin/Field/FieldFormatter/LinkFormatter.php
PHP | 260 lines | 158 code | 27 blank | 75 comment | 21 complexity | 16b25ba25a65a66bee74c807199a43b8 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.1
- <?php
- namespace Drupal\link\Plugin\Field\FieldFormatter;
- use Drupal\Component\Utility\Unicode;
- use Drupal\Core\Field\FieldDefinitionInterface;
- use Drupal\Core\Field\FieldItemListInterface;
- use Drupal\Core\Field\FormatterBase;
- use Drupal\Core\Form\FormStateInterface;
- use Drupal\Core\Path\PathValidatorInterface;
- use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
- use Drupal\Core\Url;
- use Drupal\link\LinkItemInterface;
- use Symfony\Component\DependencyInjection\ContainerInterface;
- /**
- * Plugin implementation of the 'link' formatter.
- *
- * @FieldFormatter(
- * id = "link",
- * label = @Translation("Link"),
- * field_types = {
- * "link"
- * }
- * )
- */
- class LinkFormatter extends FormatterBase implements ContainerFactoryPluginInterface {
- /**
- * The path validator service.
- *
- * @var \Drupal\Core\Path\PathValidatorInterface
- */
- protected $pathValidator;
- /**
- * {@inheritdoc}
- */
- public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
- return new static(
- $plugin_id,
- $plugin_definition,
- $configuration['field_definition'],
- $configuration['settings'],
- $configuration['label'],
- $configuration['view_mode'],
- $configuration['third_party_settings'],
- $container->get('path.validator')
- );
- }
- /**
- * Constructs a new LinkFormatter.
- *
- * @param string $plugin_id
- * The plugin_id for the formatter.
- * @param mixed $plugin_definition
- * The plugin implementation definition.
- * @param \Drupal\Core\Field\FieldDefinitionInterface $field_definition
- * The definition of the field to which the formatter is associated.
- * @param array $settings
- * The formatter settings.
- * @param string $label
- * The formatter label display setting.
- * @param string $view_mode
- * The view mode.
- * @param array $third_party_settings
- * Third party settings.
- * @param \Drupal\Core\Path\PathValidatorInterface $path_validator
- * The path validator service.
- */
- public function __construct($plugin_id, $plugin_definition, FieldDefinitionInterface $field_definition, array $settings, $label, $view_mode, array $third_party_settings, PathValidatorInterface $path_validator) {
- parent::__construct($plugin_id, $plugin_definition, $field_definition, $settings, $label, $view_mode, $third_party_settings);
- $this->pathValidator = $path_validator;
- }
- /**
- * {@inheritdoc}
- */
- public static function defaultSettings() {
- return [
- 'trim_length' => '80',
- 'url_only' => '',
- 'url_plain' => '',
- 'rel' => '',
- 'target' => '',
- ] + parent::defaultSettings();
- }
- /**
- * {@inheritdoc}
- */
- public function settingsForm(array $form, FormStateInterface $form_state) {
- $elements = parent::settingsForm($form, $form_state);
- $elements['trim_length'] = [
- '#type' => 'number',
- '#title' => t('Trim link text length'),
- '#field_suffix' => t('characters'),
- '#default_value' => $this->getSetting('trim_length'),
- '#min' => 1,
- '#description' => t('Leave blank to allow unlimited link text lengths.'),
- ];
- $elements['url_only'] = [
- '#type' => 'checkbox',
- '#title' => t('URL only'),
- '#default_value' => $this->getSetting('url_only'),
- '#access' => $this->getPluginId() == 'link',
- ];
- $elements['url_plain'] = [
- '#type' => 'checkbox',
- '#title' => t('Show URL as plain text'),
- '#default_value' => $this->getSetting('url_plain'),
- '#access' => $this->getPluginId() == 'link',
- '#states' => [
- 'visible' => [
- ':input[name*="url_only"]' => ['checked' => TRUE],
- ],
- ],
- ];
- $elements['rel'] = [
- '#type' => 'checkbox',
- '#title' => t('Add rel="nofollow" to links'),
- '#return_value' => 'nofollow',
- '#default_value' => $this->getSetting('rel'),
- ];
- $elements['target'] = [
- '#type' => 'checkbox',
- '#title' => t('Open link in new window'),
- '#return_value' => '_blank',
- '#default_value' => $this->getSetting('target'),
- ];
- return $elements;
- }
- /**
- * {@inheritdoc}
- */
- public function settingsSummary() {
- $summary = [];
- $settings = $this->getSettings();
- if (!empty($settings['trim_length'])) {
- $summary[] = t('Link text trimmed to @limit characters', ['@limit' => $settings['trim_length']]);
- }
- else {
- $summary[] = t('Link text not trimmed');
- }
- if ($this->getPluginId() == 'link' && !empty($settings['url_only'])) {
- if (!empty($settings['url_plain'])) {
- $summary[] = t('Show URL only as plain-text');
- }
- else {
- $summary[] = t('Show URL only');
- }
- }
- if (!empty($settings['rel'])) {
- $summary[] = t('Add rel="@rel"', ['@rel' => $settings['rel']]);
- }
- if (!empty($settings['target'])) {
- $summary[] = t('Open link in new window');
- }
- return $summary;
- }
- /**
- * {@inheritdoc}
- */
- 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;
- }
- /**
- * Builds the \Drupal\Core\Url object for a link field item.
- *
- * @param \Drupal\link\LinkItemInterface $item
- * The link field item being rendered.
- *
- * @return \Drupal\Core\Url
- * A Url object.
- */
- protected function buildUrl(LinkItemInterface $item) {
- $url = $item->getUrl() ?: Url::fromRoute('<none>');
- $settings = $this->getSettings();
- $options = $item->options;
- $options += $url->getOptions();
- // Add optional 'rel' attribute to link options.
- if (!empty($settings['rel'])) {
- $options['attributes']['rel'] = $settings['rel'];
- }
- // Add optional 'target' attribute to link options.
- if (!empty($settings['target'])) {
- $options['attributes']['target'] = $settings['target'];
- }
- $url->setOptions($options);
- return $url;
- }
- }