public function MaestroInteractiveTask::interactiveHandlerCallback in Maestro 3.x

Same name and namespace in other branches

1. 8.2 src/Plugin/EngineTasks/MaestroInteractiveTask.php \Drupal\maestro\Plugin\EngineTasks\MaestroInteractiveTask::interactiveHandlerCallback()

Implements callback for Ajax event on objective selection.

Parameters

array $form: From render array.

\Drupal\Core\Form\FormStateInterface $form_state: Current state of form.

Return value

array Objective selection section of the form.

File

src/Plugin/EngineTasks/MaestroInteractiveTask.php, line 245

Class

MaestroInteractiveTask

Maestro Interactive Task Plugin.

Namespace

Drupal\maestro\Plugin\EngineTasks

Code

public function interactiveHandlerCallback(array &$form, FormStateInterface $form_state) {
  $selected_handler = $new_objective_id = $form_state
    ->getValue('handler');

  // Let modules signal the handlers they wish to share.
  $handlers = \Drupal::moduleHandler()
    ->invokeAll('maestro_interactive_handlers', []);
  if ($selected_handler != '' && !function_exists($selected_handler)) {
    $handler_desc = \Drupal::translation()
      ->translate('This handler form function does not exist.');
  }
  elseif (isset($handlers[$selected_handler])) {
    $handler_desc = $handlers[$selected_handler];
  }
  else {
    $handler_desc = \Drupal::translation()
      ->translate('The function that contains the form definition for this instance of the interactive task.');
  }
  $form['handler_help_text'] = [
    '#type' => 'html_tag',
    '#tag' => 'div',
    '#value' => $handler_desc,
    '#readonly' => TRUE,
    '#attributes' => [
      'class' => [
        'handler-help-message',
      ],
      'id' => [
        'handler-ajax-refresh-wrapper',
      ],
    ],
  ];
  return $form['handler_help_text'];
}