module_instructions-2.0.x-dev/src/Form/ModuleInstructionsForm.php

<?php

namespace Drupal\module_instructions\Form;

use Drupal\Core\Config\ConfigFactoryInterface;
use Drupal\Core\Extension\ModuleHandlerInterface;
use Drupal\Core\Form\ConfigFormBase;
use Drupal\Core\Form\FormStateInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Form handler for adding module instruction settings.
 */
class ModuleInstructionsForm extends ConfigFormBase {

  /**
   * Returns the module_handler service.
   *
   * @var \Drupal\Core\Extension\ModuleHandlerInterface
   */
  protected $moduleHandler;

  /**
   * Constructs a ModuleInstructionsForm form.
   *
   * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
   *   The factory for configuration objects.
   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
   *   Interface for classes that manage a set of enabled modules.
   */
  public function __construct(ConfigFactoryInterface $config_factory, ModuleHandlerInterface $module_handler) {
    parent::__construct($config_factory);

    $this->moduleHandler = $module_handler;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static(
      $container->get('config.factory'),
      $container->get('module_handler')
    );
  }

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return 'module_instructions_form';
  }

  /**
   * {@inheritdoc}
   */
  protected function getEditableConfigNames() {
    return [
      'module_instructions.settings',
    ];
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state) {
    $config = $this->configFactory->getEditable('module_instructions.settings');

    $options = [];

    foreach ($this->moduleHandler->invokeAll('module_instructions_info') as $key => $item) {
      $options[$key] = !empty($item['label']) ? $item['label'] : ucfirst($key);
    }

    $form['types'] = [
      '#type' => 'checkboxes',
      '#title' => $this->t('Module instructions'),
      '#options' => $options,
      '#default_value' => !empty($config->get('types')) ? $config->get('types') : [],
    ];

    return parent::buildForm($form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    $this->configFactory->getEditable('module_instructions.settings')
      ->set('types', array_filter($form_state->getValue('types')))
      ->save();

    parent::submitForm($form, $form_state);
  }

}