diff core/modules/node/src/NodeViewBuilder.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/modules/node/src/NodeViewBuilder.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,169 @@
+<?php
+
+namespace Drupal\node;
+
+use Drupal\Core\Entity\Display\EntityViewDisplayInterface;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Entity\EntityViewBuilder;
+use Drupal\node\Entity\Node;
+
+/**
+ * View builder handler for nodes.
+ */
+class NodeViewBuilder extends EntityViewBuilder {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildComponents(array &$build, array $entities, array $displays, $view_mode) {
+    /** @var \Drupal\node\NodeInterface[] $entities */
+    if (empty($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' => [
+            get_called_class() . '::renderLinks', [
+              $entity->id(),
+              $view_mode,
+              $entity->language()->getId(),
+              !empty($entity->in_preview),
+            ],
+          ],
+        ];
+      }
+
+      // Add Language field text element to node render array.
+      if ($display->getComponent('langcode')) {
+        $build[$id]['langcode'] = [
+          '#type' => 'item',
+          '#title' => t('Language'),
+          '#markup' => $entity->language()->getName(),
+          '#prefix' => '<div id="field-language-display">',
+          '#suffix' => '</div>'
+        ];
+      }
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getBuildDefaults(EntityInterface $entity, $view_mode) {
+    $defaults = parent::getBuildDefaults($entity, $view_mode);
+
+    // Don't cache nodes that are in 'preview' mode.
+    if (isset($defaults['#cache']) && isset($entity->in_preview)) {
+      unset($defaults['#cache']);
+    }
+
+    return $defaults;
+  }
+
+  /**
+   * #lazy_builder callback; builds a node's links.
+   *
+   * @param string $node_entity_id
+   *   The node entity ID.
+   * @param string $view_mode
+   *   The view mode in which the node entity is being viewed.
+   * @param string $langcode
+   *   The language in which the node entity is being viewed.
+   * @param bool $is_in_preview
+   *   Whether the node is currently being previewed.
+   *
+   * @return array
+   *   A renderable array representing the node links.
+   */
+  public static function renderLinks($node_entity_id, $view_mode, $langcode, $is_in_preview) {
+    $links = [
+      '#theme' => 'links__node',
+      '#pre_render' => ['drupal_pre_render_links'],
+      '#attributes' => ['class' => ['links', 'inline']],
+    ];
+
+    if (!$is_in_preview) {
+      $entity = Node::load($node_entity_id)->getTranslation($langcode);
+      $links['node'] = static::buildLinks($entity, $view_mode);
+
+      // Allow other modules to alter the node links.
+      $hook_context = [
+        'view_mode' => $view_mode,
+        'langcode' => $langcode,
+      ];
+      \Drupal::moduleHandler()->alter('node_links', $links, $entity, $hook_context);
+    }
+    return $links;
+  }
+
+  /**
+   * Build the default links (Read more) for a node.
+   *
+   * @param \Drupal\node\NodeInterface $entity
+   *   The node object.
+   * @param string $view_mode
+   *   A view mode identifier.
+   *
+   * @return array
+   *   An array that can be processed by drupal_pre_render_links().
+   */
+  protected static function buildLinks(NodeInterface $entity, $view_mode) {
+    $links = [];
+
+    // Always display a read more link on teasers because we have no way
+    // to know when a teaser view is different than a full view.
+    if ($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->urlInfo(),
+        'language' => $entity->language(),
+        'attributes' => [
+          'rel' => 'tag',
+          'title' => $node_title_stripped,
+        ],
+      ];
+    }
+
+    return [
+      '#theme' => 'links__node__node',
+      '#links' => $links,
+      '#attributes' => ['class' => ['links', 'inline']],
+    ];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function alterBuild(array &$build, EntityInterface $entity, EntityViewDisplayInterface $display, $view_mode) {
+    /** @var \Drupal\node\NodeInterface $entity */
+    parent::alterBuild($build, $entity, $display, $view_mode);
+    if ($entity->id()) {
+      if ($entity->isDefaultRevision()) {
+        $build['#contextual_links']['node'] = [
+          'route_parameters' => ['node' => $entity->id()],
+          'metadata' => ['changed' => $entity->getChangedTime()],
+        ];
+      }
+      else {
+        $build['#contextual_links']['node_revision'] = [
+          'route_parameters' => [
+            'node' => $entity->id(),
+            'node_revision' => $entity->getRevisionId(),
+          ],
+          'metadata' => ['changed' => $entity->getChangedTime()],
+        ];
+      }
+    }
+  }
+
+}