function toc_js_node_view in Toc.js 2.0.x

Same name and namespace in other branches

1. 8 toc_js.module \toc_js_node_view()

Implements hook_entity_view().

File

./toc_js.module, line 100

Contains toc_js.module.

Code

function toc_js_node_view(array &$build, EntityInterface $entity, EntityViewDisplayInterface $display, $view_mode) {
  if ($display
    ->getComponent('toc_js')) {

    /** @var \Drupal\node\NodeTypeInterface $node_type */
    $node_type = $entity->type->entity;
    $toc_override = $node_type
      ->getThirdPartySetting('toc_js_per_node', 'override', 0);
    $toc_override_default = $node_type
      ->getThirdPartySetting('toc_js_per_node', 'override_default', 1);

    // Support toc_js per node feature.
    if ($entity
      ->hasField('toc_js_active') && $toc_override) {

      // Use default override value if not set
      if ($entity->toc_js_active->value == NULL) {
        $entity->toc_js_active->value = $toc_override_default;
      }
      if (empty($entity->toc_js_active->value)) {
        return;
      }
    }
    $toc_js_settings = $node_type
      ->getThirdPartySettings('toc_js');
    if (empty($toc_js_settings['toc_js_active'])) {

      // Toc has been disabled but the extra field hasn't been disabled.
      return;
    }

    // lambda function to clean css identifiers
    $cleanCssIdentifier = function ($value) {
      return Html::cleanCssIdentifier(trim($value));
    };

    // toc-js class is used to initialize the toc. Additional classes are added from the configuration.
    $classes = array_map($cleanCssIdentifier, array_merge([
      'toc-js',
    ], explode(',', $node_type
      ->getThirdPartySetting('toc_js', 'classes'))));
    $attributes = new Attribute([
      'class' => $classes,
    ]);
    $attributes
      ->setAttribute('id', 'toc-js-node-' . $entity
      ->id());
    $title_attributes = new Attribute([
      'class' => [
        'toc-title',
        'h2',
      ],
    ]);
    if ($node_type
      ->getThirdPartySetting('toc_js', 'sticky', 0)) {
      $attributes
        ->addClass('sticky');
    }
    foreach ($toc_js_settings as $name => $setting) {
      if ($name == 'toc_js_active' || $name == 'title' || $name == 'classes') {
        continue;
      }
      $data_name = 'data-' . $cleanCssIdentifier($name);
      $attributes
        ->setAttribute($data_name, $setting);
    }
    $build['toc_js'] = [
      '#theme' => 'toc_js',
      '#title' => $node_type
        ->getThirdPartySetting('toc_js', 'title', 'Table of contents'),
      '#tag' => 'div',
      '#title_attributes' => $title_attributes,
      '#attributes' => $attributes,
      '#entity' => $entity,
      '#attached' => [
        'library' => [
          'toc_js/toc',
        ],
      ],
    ];
  }
}