--- /dev/null
+<?php
+
+namespace Drupal\action;
+
+use Drupal\Core\Entity\EntityForm;
+use Drupal\Core\Entity\EntityStorageInterface;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Plugin\PluginFormInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Provides a base form for action forms.
+ */
+abstract class ActionFormBase extends EntityForm {
+
+ /**
+ * The action plugin being configured.
+ *
+ * @var \Drupal\Core\Action\ActionInterface
+ */
+ protected $plugin;
+
+ /**
+ * The action storage.
+ *
+ * @var \Drupal\Core\Entity\EntityStorageInterface
+ */
+ protected $storage;
+
+ /**
+ * Constructs a new action form.
+ *
+ * @param \Drupal\Core\Entity\EntityStorageInterface $storage
+ * The action storage.
+ */
+ public function __construct(EntityStorageInterface $storage) {
+ $this->storage = $storage;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function create(ContainerInterface $container) {
+ return new static(
+ $container->get('entity.manager')->getStorage('action')
+ );
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildForm(array $form, FormStateInterface $form_state) {
+ $this->plugin = $this->entity->getPlugin();
+ return parent::buildForm($form, $form_state);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function form(array $form, FormStateInterface $form_state) {
+ $form['label'] = [
+ '#type' => 'textfield',
+ '#title' => $this->t('Label'),
+ '#default_value' => $this->entity->label(),
+ '#maxlength' => '255',
+ '#description' => $this->t('A unique label for this advanced action. This label will be displayed in the interface of modules that integrate with actions.'),
+ ];
+
+ $form['id'] = [
+ '#type' => 'machine_name',
+ '#default_value' => $this->entity->id(),
+ '#disabled' => !$this->entity->isNew(),
+ '#maxlength' => 64,
+ '#description' => $this->t('A unique name for this action. It must only contain lowercase letters, numbers and underscores.'),
+ '#machine_name' => [
+ 'exists' => [$this, 'exists'],
+ ],
+ ];
+ $form['plugin'] = [
+ '#type' => 'value',
+ '#value' => $this->entity->get('plugin'),
+ ];
+ $form['type'] = [
+ '#type' => 'value',
+ '#value' => $this->entity->getType(),
+ ];
+
+ if ($this->plugin instanceof PluginFormInterface) {
+ $form += $this->plugin->buildConfigurationForm($form, $form_state);
+ }
+
+ return parent::form($form, $form_state);
+ }
+
+ /**
+ * Determines if the action already exists.
+ *
+ * @param string $id
+ * The action ID
+ *
+ * @return bool
+ * TRUE if the action exists, FALSE otherwise.
+ */
+ public function exists($id) {
+ $action = $this->storage->load($id);
+ return !empty($action);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function actions(array $form, FormStateInterface $form_state) {
+ $actions = parent::actions($form, $form_state);
+ unset($actions['delete']);
+ return $actions;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function validateForm(array &$form, FormStateInterface $form_state) {
+ parent::validateForm($form, $form_state);
+
+ if ($this->plugin instanceof PluginFormInterface) {
+ $this->plugin->validateConfigurationForm($form, $form_state);
+ }
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function submitForm(array &$form, FormStateInterface $form_state) {
+ parent::submitForm($form, $form_state);
+
+ if ($this->plugin instanceof PluginFormInterface) {
+ $this->plugin->submitConfigurationForm($form, $form_state);
+ }
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function save(array $form, FormStateInterface $form_state) {
+ $this->entity->save();
+ drupal_set_message($this->t('The action has been successfully saved.'));
+
+ $form_state->setRedirect('entity.action.collection');
+ }
+
+}