--- /dev/null
+<?php
+
+namespace Drupal\ctools\Form;
+
+
+use Drupal\Component\Plugin\PluginManagerInterface;
+use Drupal\Component\Serialization\Json;
+use Drupal\Core\Ajax\AjaxResponse;
+use Drupal\Core\Ajax\OpenModalDialogCommand;
+use Drupal\Core\Form\FormBase;
+use Drupal\Core\Form\FormBuilderInterface;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Url;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+abstract class ManageConditions extends FormBase {
+
+ /**
+ * @var \Drupal\Core\Condition\ConditionManager
+ */
+ protected $manager;
+
+ /**
+ * @var string
+ */
+ protected $machine_name;
+
+ public static function create(ContainerInterface $container) {
+ return new static($container->get('plugin.manager.condition'));
+ }
+
+ function __construct(PluginManagerInterface $manager) {
+ $this->manager = $manager;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getFormId() {
+ return 'ctools_manage_conditions_form';
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildForm(array $form, FormStateInterface $form_state) {
+ $cached_values = $form_state->getTemporaryValue('wizard');
+ $this->machine_name = $cached_values['id'];
+ $form['#attached']['library'][] = 'core/drupal.dialog.ajax';
+ $options = [];
+ $contexts = $this->getContexts($cached_values);
+ foreach ($this->manager->getDefinitionsForContexts($contexts) as $plugin_id => $definition) {
+ $options[$plugin_id] = (string) $definition['label'];
+ }
+ $form['items'] = array(
+ '#type' => 'markup',
+ '#prefix' => '<div id="configured-conditions">',
+ '#suffix' => '</div>',
+ '#theme' => 'table',
+ '#header' => array($this->t('Plugin Id'), $this->t('Summary'), $this->t('Operations')),
+ '#rows' => $this->renderRows($cached_values),
+ '#empty' => $this->t('No required conditions have been configured.')
+ );
+ $form['conditions'] = [
+ '#type' => 'select',
+ '#options' => $options,
+ ];
+ $form['add'] = [
+ '#type' => 'submit',
+ '#name' => 'add',
+ '#value' => $this->t('Add Condition'),
+ '#ajax' => [
+ 'callback' => [$this, 'add'],
+ 'event' => 'click',
+ ],
+ '#submit' => [
+ 'callback' => [$this, 'submitForm'],
+ ]
+ ];
+ return $form;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function submitForm(array &$form, FormStateInterface $form_state) {
+ $cached_values = $form_state->getTemporaryValue('wizard');
+ list(, $route_parameters) = $this->getOperationsRouteInfo($cached_values, $this->machine_name, $form_state->getValue('conditions'));
+ $form_state->setRedirect($this->getAddRoute($cached_values), $route_parameters);
+ }
+
+ public function add(array &$form, FormStateInterface $form_state) {
+ $condition = $form_state->getValue('conditions');
+ $content = \Drupal::formBuilder()->getForm($this->getConditionClass(), $condition, $this->getTempstoreId(), $this->machine_name);
+ $content['#attached']['library'][] = 'core/drupal.dialog.ajax';
+ $cached_values = $form_state->getTemporaryValue('wizard');
+ list(, $route_parameters) = $this->getOperationsRouteInfo($cached_values, $this->machine_name, $form_state->getValue('conditions'));
+ $content['submit']['#attached']['drupalSettings']['ajax'][$content['submit']['#id']]['url'] = $this->url($this->getAddRoute($cached_values), $route_parameters, ['query' => [FormBuilderInterface::AJAX_FORM_REQUEST => TRUE]]);
+ $response = new AjaxResponse();
+ $response->addCommand(new OpenModalDialogCommand($this->t('Configure Required Context'), $content, array('width' => '700')));
+ return $response;
+ }
+
+ /**
+ * @param $cached_values
+ *
+ * @return array
+ */
+ public function renderRows($cached_values) {
+ $configured_conditions = array();
+ foreach ($this->getConditions($cached_values) as $row => $condition) {
+ /** @var $instance \Drupal\Core\Condition\ConditionInterface */
+ $instance = $this->manager->createInstance($condition['id'], $condition);
+ list($route_name, $route_parameters) = $this->getOperationsRouteInfo($cached_values, $cached_values['id'], $row);
+ $build = array(
+ '#type' => 'operations',
+ '#links' => $this->getOperations($route_name, $route_parameters),
+ );
+ $configured_conditions[] = array(
+ $instance->getPluginId(),
+ $instance->summary(),
+ 'operations' => [
+ 'data' => $build,
+ ],
+ );
+ }
+ return $configured_conditions;
+ }
+
+ protected function getOperations($route_name_base, array $route_parameters = array()) {
+ $operations['edit'] = array(
+ 'title' => $this->t('Edit'),
+ 'url' => new Url($route_name_base . '.edit', $route_parameters),
+ 'weight' => 10,
+ 'attributes' => array(
+ 'class' => ['use-ajax'],
+ 'data-dialog-type' => 'modal',
+ 'data-dialog-options' => Json::encode([
+ 'width' => 700,
+ ]),
+ ),
+ );
+ $route_parameters['id'] = $route_parameters['condition'];
+ $operations['delete'] = array(
+ 'title' => $this->t('Delete'),
+ 'url' => new Url($route_name_base . '.delete', $route_parameters),
+ 'weight' => 100,
+ 'attributes' => array(
+ 'class' => array('use-ajax'),
+ 'data-dialog-type' => 'modal',
+ 'data-dialog-options' => Json::encode([
+ 'width' => 700,
+ ]),
+ ),
+ );
+ return $operations;
+ }
+
+ /**
+ * Return a subclass of '\Drupal\ctools\Form\ConditionConfigure'.
+ *
+ * The ConditionConfigure class is designed to be subclassed with custom
+ * route information to control the modal/redirect needs of your use case.
+ *
+ * @return string
+ */
+ abstract protected function getConditionClass();
+
+ /**
+ * The route to which condition 'add' actions should submit.
+ *
+ * @param mixed $cached_values
+ *
+ * @return string
+ */
+ abstract protected function getAddRoute($cached_values);
+
+ /**
+ * Provide the tempstore id for your specified use case.
+ *
+ * @return string
+ */
+ abstract protected function getTempstoreId();
+
+ /**
+ * Document the route name and parameters for edit/delete context operations.
+ *
+ * The route name returned from this method is used as a "base" to which
+ * ".edit" and ".delete" are appeneded in the getOperations() method.
+ * Subclassing '\Drupal\ctools\Form\ConditionConfigure' and
+ * '\Drupal\ctools\Form\ConditionDelete' should set you up for using this
+ * approach quite seamlessly.
+ *
+ * @param mixed $cached_values
+ *
+ * @param string $machine_name
+ *
+ * @param string $row
+ *
+ * @return array
+ * In the format of
+ * return ['route.base.name', ['machine_name' => $machine_name, 'context' => $row]];
+ */
+ abstract protected function getOperationsRouteInfo($cached_values, $machine_name, $row);
+
+ /**
+ * Custom logic for retrieving the conditions array from cached_values.
+ *
+ * @param $cached_values
+ *
+ * @return array
+ */
+ abstract protected function getConditions($cached_values);
+
+ /**
+ * Custom logic for retrieving the contexts array from cached_values.
+ *
+ * @param $cached_values
+ *
+ * @return \Drupal\Core\Plugin\Context\ContextInterface[]
+ */
+ abstract protected function getContexts($cached_values);
+
+}
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