View source
<?php
namespace Drupal\node;
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Entity\EntityViewBuilder;
use Drupal\Core\Render\Element\Link;
use Drupal\Core\Security\TrustedCallbackInterface;
class NodeViewBuilder extends EntityViewBuilder implements TrustedCallbackInterface {
public function buildComponents(array &$build, array $entities, array $displays, $view_mode) {
if (empty($entities)) {
return;
}
parent::buildComponents($build, $entities, $displays, $view_mode);
foreach ($entities as $id => $entity) {
$bundle = $entity
->bundle();
$display = $displays[$bundle];
if ($display
->getComponent('links')) {
$build[$id]['links'] = [
'#lazy_builder' => [
static::class . '::renderLinks',
[
$entity
->id(),
$view_mode,
$entity
->language()
->getId(),
!empty($entity->in_preview),
$entity
->isDefaultRevision() ? NULL : $entity
->getLoadedRevisionId(),
],
],
];
}
if ($display
->getComponent('langcode')) {
$build[$id]['langcode'] = [
'#type' => 'item',
'#title' => t('Language'),
'#markup' => $entity
->language()
->getName(),
'#prefix' => '<div id="field-language-display">',
'#suffix' => '</div>',
];
}
}
}
protected function getBuildDefaults(EntityInterface $entity, $view_mode) {
$defaults = parent::getBuildDefaults($entity, $view_mode);
if (isset($defaults['#cache']) && isset($entity->in_preview)) {
unset($defaults['#cache']);
}
return $defaults;
}
public static function renderLinks($node_entity_id, $view_mode, $langcode, $is_in_preview, $revision_id = NULL) {
$links = [
'#theme' => 'links__node',
'#pre_render' => [
[
Link::class,
'preRenderLinks',
],
],
'#attributes' => [
'class' => [
'links',
'inline',
],
],
];
if (!$is_in_preview) {
$storage = \Drupal::entityTypeManager()
->getStorage('node');
$revision = !isset($revision_id) ? $storage
->load($node_entity_id) : $storage
->loadRevision($revision_id);
$entity = $revision
->getTranslation($langcode);
$links['node'] = static::buildLinks($entity, $view_mode);
$hook_context = [
'view_mode' => $view_mode,
'langcode' => $langcode,
];
\Drupal::moduleHandler()
->alter('node_links', $links, $entity, $hook_context);
}
return $links;
}
protected static function buildLinks(NodeInterface $entity, $view_mode) {
$links = [];
if ($view_mode == 'teaser') {
$node_title_stripped = strip_tags($entity
->label());
$links['node-readmore'] = [
'title' => t('Read more<span class="visually-hidden"> about @title</span>', [
'@title' => $node_title_stripped,
]),
'url' => $entity
->toUrl(),
'language' => $entity
->language(),
'attributes' => [
'rel' => 'tag',
'title' => $node_title_stripped,
],
];
}
return [
'#theme' => 'links__node__node',
'#links' => $links,
'#attributes' => [
'class' => [
'links',
'inline',
],
],
];
}
public static function trustedCallbacks() {
$callbacks = parent::trustedCallbacks();
$callbacks[] = 'renderLinks';
return $callbacks;
}
}