Version 1
[yaffs-website] / web / core / modules / views / src / Plugin / views / area / Entity.php
diff --git a/web/core/modules/views/src/Plugin/views/area/Entity.php b/web/core/modules/views/src/Plugin/views/area/Entity.php
new file mode 100644 (file)
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@@ -0,0 +1,198 @@
+<?php
+
+namespace Drupal\views\Plugin\views\area;
+
+use Drupal\Core\Entity\EntityManagerInterface;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\views\Plugin\views\display\DisplayPluginBase;
+use Drupal\views\ViewExecutable;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Provides an area handler which renders an entity in a certain view mode.
+ *
+ * @ingroup views_area_handlers
+ *
+ * @ViewsArea("entity")
+ */
+class Entity extends TokenizeAreaPluginBase {
+
+  /**
+   * Stores the entity type of the result entities.
+   *
+   * @var string
+   */
+  protected $entityType;
+
+  /**
+   * The entity manager.
+   *
+   * @var \Drupal\Core\Entity\EntityManagerInterface
+   */
+  protected $entityManager;
+
+  /**
+   * Constructs a new Entity instance.
+   *
+   * @param array $configuration
+   *   A configuration array containing information about the plugin instance.
+   * @param string $plugin_id
+   *   The plugin_id for the plugin instance.
+   * @param mixed $plugin_definition
+   *   The plugin implementation definition.
+   * @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
+   *   The entity manager.
+   */
+  public function __construct(array $configuration, $plugin_id, $plugin_definition, EntityManagerInterface $entity_manager) {
+    parent::__construct($configuration, $plugin_id, $plugin_definition);
+
+    $this->entityManager = $entity_manager;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+    return new static(
+      $configuration,
+      $plugin_id,
+      $plugin_definition,
+      $container->get('entity.manager')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function init(ViewExecutable $view, DisplayPluginBase $display, array &$options = NULL) {
+    parent::init($view, $display, $options);
+    $this->entityType = $this->definition['entity_type'];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function defineOptions() {
+    $options = parent::defineOptions();
+
+    // Per default we enable tokenize, as this is the most common use case for
+    // this handler.
+    $options['tokenize']['default'] = TRUE;
+
+    // Contains the config target identifier for the entity.
+    $options['target'] = ['default' => ''];
+    $options['view_mode'] = ['default' => 'default'];
+    $options['bypass_access'] = ['default' => FALSE];
+
+    return $options;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildOptionsForm(&$form, FormStateInterface $form_state) {
+    parent::buildOptionsForm($form, $form_state);
+
+    $form['view_mode'] = [
+      '#type' => 'select',
+      '#options' => $this->entityManager->getViewModeOptions($this->entityType),
+      '#title' => $this->t('View mode'),
+      '#default_value' => $this->options['view_mode'],
+    ];
+
+    $label = $this->entityManager->getDefinition($this->entityType)->getLabel();
+    $target = $this->options['target'];
+
+    // If the target does not contain tokens, try to load the entity and
+    // display the entity ID to the admin form user.
+    // @todo Use a method to check for tokens in
+    //   https://www.drupal.org/node/2396607.
+    if (strpos($this->options['target'], '{{') === FALSE) {
+      // @todo If the entity does not exist, this will will show the config
+      //   target identifier. Decide if this is the correct behavior in
+      //   https://www.drupal.org/node/2415391.
+      if ($target_entity = $this->entityManager->loadEntityByConfigTarget($this->entityType, $this->options['target'])) {
+        $target = $target_entity->id();
+      }
+    }
+    $form['target'] = [
+      '#title' => $this->t('@entity_type_label ID', ['@entity_type_label' => $label]),
+      '#type' => 'textfield',
+      '#default_value' => $target,
+    ];
+
+    $form['bypass_access'] = [
+      '#type' => 'checkbox',
+      '#title' => $this->t('Bypass access checks'),
+      '#description' => $this->t('If enabled, access permissions for rendering the entity are not checked.'),
+      '#default_value' => !empty($this->options['bypass_access']),
+    ];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitOptionsForm(&$form, FormStateInterface $form_state) {
+    parent::submitOptionsForm($form, $form_state);
+
+    // Load the referenced entity and store its config target identifier if
+    // the target does not contains tokens.
+    // @todo Use a method to check for tokens in
+    //   https://www.drupal.org/node/2396607.
+    $options = $form_state->getValue('options');
+    if (strpos($options['target'], '{{') === FALSE) {
+      if ($entity = $this->entityManager->getStorage($this->entityType)->load($options['target'])) {
+        $options['target'] = $entity->getConfigTarget();
+      }
+      $form_state->setValue('options', $options);
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function render($empty = FALSE) {
+    if (!$empty || !empty($this->options['empty'])) {
+      // @todo Use a method to check for tokens in
+      //   https://www.drupal.org/node/2396607.
+      if (strpos($this->options['target'], '{{') !== FALSE) {
+        // We cast as we need the integer/string value provided by the
+        // ::tokenizeValue() call.
+        $target_id = (string) $this->tokenizeValue($this->options['target']);
+        if ($entity = $this->entityManager->getStorage($this->entityType)->load($target_id)) {
+          $target_entity = $entity;
+        }
+      }
+      else {
+        if ($entity = $this->entityManager->loadEntityByConfigTarget($this->entityType, $this->options['target'])) {
+          $target_entity = $entity;
+        }
+      }
+      if (isset($target_entity) && (!empty($this->options['bypass_access']) || $target_entity->access('view'))) {
+        $view_builder = $this->entityManager->getViewBuilder($this->entityType);
+        return $view_builder->view($target_entity, $this->options['view_mode']);
+      }
+    }
+
+    return [];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function calculateDependencies() {
+    $dependencies = parent::calculateDependencies();
+
+    // Ensure that we don't add dependencies for placeholders.
+    // @todo Use a method to check for tokens in
+    //   https://www.drupal.org/node/2396607.
+    if (strpos($this->options['target'], '{{') === FALSE) {
+      if ($entity = $this->entityManager->loadEntityByConfigTarget($this->entityType, $this->options['target'])) {
+        $dependencies[$this->entityManager->getDefinition($this->entityType)->getConfigDependencyKey()][] = $entity->getConfigDependencyName();
+      }
+    }
+
+    return $dependencies;
+  }
+
+}