--- /dev/null
+<?php
+
+namespace Drupal\ctools\Form;
+
+
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Form\ConfirmFormBase;
+use Drupal\user\SharedTempStoreFactory;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Provides a form for deleting an contexts and relationships.
+ */
+abstract class ContextDelete extends ConfirmFormBase {
+
+ /**
+ * @var \Drupal\user\SharedTempStoreFactory
+ */
+ protected $tempstore;
+
+ /**
+ * @var string
+ */
+ protected $tempstore_id;
+
+ /**
+ * @var string
+ */
+ protected $machine_name;
+
+ /**
+ * The static context's machine name.
+ *
+ * @var array
+ */
+ protected $context_id;
+
+ public static function create(ContainerInterface $container) {
+ return new static($container->get('user.shared_tempstore'));
+ }
+
+ public function __construct(SharedTempStoreFactory $tempstore) {
+ $this->tempstore = $tempstore;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getFormId() {
+ return 'ctools_context_delete_form';
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getConfirmText() {
+ return $this->t('Delete');
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildForm(array $form, FormStateInterface $form_state, $tempstore_id = NULL, $machine_name = NULL, $context_id = NULL) {
+ $this->tempstore_id = $tempstore_id;
+ $this->machine_name = $machine_name;
+ $this->context_id = $context_id;
+ return parent::buildForm($form, $form_state);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function submitForm(array &$form, FormStateInterface $form_state) {
+ $form_state->setRedirectUrl($this->getCancelUrl());
+ }
+
+ protected function getTempstore() {
+ return $this->tempstore->get($this->tempstore_id)->get($this->machine_name);
+ }
+
+ protected function setTempstore($cached_values) {
+ $this->tempstore->get($this->tempstore_id)->set($this->machine_name, $cached_values);
+ }
+
+}