Version 1

[yaffs-website] / web / core / modules / field_ui / src / Form / EntityDisplayModeFormBase.php

diff --git a/web/core/modules/field_ui/src/Form/EntityDisplayModeFormBase.php b/web/core/modules/field_ui/src/Form/EntityDisplayModeFormBase.php
new file mode 100644 (file)
index 0000000..72a8a19
--- /dev/null
+++ b/web/core/modules/field_ui/src/Form/EntityDisplayModeFormBase.php
@@ -0,0 +1,87 @@
+<?php
+
+namespace Drupal\field_ui\Form;
+
+use Drupal\Core\Entity\EntityForm;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Provides the generic base class for entity display mode forms.
+ */
+abstract class EntityDisplayModeFormBase extends EntityForm {
+
+  /**
+   * The entity type definition.
+   *
+   * @var \Drupal\Core\Entity\EntityTypeInterface
+   */
+  protected $entityType;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function init(FormStateInterface $form_state) {
+    parent::init($form_state);
+    $this->entityType = $this->entityTypeManager->getDefinition($this->entity->getEntityTypeId());
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function form(array $form, FormStateInterface $form_state) {
+    $form['label'] = [
+      '#type' => 'textfield',
+      '#title' => $this->t('Name'),
+      '#maxlength' => 100,
+      '#default_value' => $this->entity->label(),
+    ];
+
+    $form['id'] = [
+      '#type' => 'machine_name',
+      '#description' => $this->t('A unique machine-readable name. Can only contain lowercase letters, numbers, and underscores.'),
+      '#disabled' => !$this->entity->isNew(),
+      '#default_value' => $this->entity->id(),
+      '#field_prefix' => $this->entity->isNew() ? $this->entity->getTargetType() . '.' : '',
+      '#machine_name' => [
+        'exists' => [$this, 'exists'],
+        'replace_pattern' => '[^a-z0-9_.]+',
+      ],
+    ];
+
+    return $form;
+  }
+
+  /**
+   * Determines if the display mode already exists.
+   *
+   * @param string|int $entity_id
+   *   The entity ID.
+   * @param array $element
+   *   The form element.
+   *
+   * @return bool
+   *   TRUE if the display mode exists, FALSE otherwise.
+   */
+  public function exists($entity_id, array $element) {
+    // Do not allow to add internal 'default' view mode.
+    if ($entity_id == 'default') {
+      return TRUE;
+    }
+    return (bool) $this->entityTypeManager
+      ->getStorage($this->entity->getEntityTypeId())
+      ->getQuery()
+      ->condition('id', $element['#field_prefix'] . $entity_id)
+      ->execute();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function save(array $form, FormStateInterface $form_state) {
+    drupal_set_message($this->t('Saved the %label @entity-type.', ['%label' => $this->entity->label(), '@entity-type' => $this->entityType->getLowercaseLabel()]));
+    $this->entity->save();
+    \Drupal::entityManager()->clearCachedFieldDefinitions();
+    $form_state->setRedirectUrl($this->entity->urlInfo('collection'));
+  }
+
+}