FormTestHooks.php

<?php

declare (strict_types=1);
namespace Drupal\form_test\Hook;

use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Hook\Attribute\Hook;
use Drupal\Core\Render\Element\Submit;
use Drupal\Core\Render\ElementInfoManagerInterface;
use Drupal\Core\StringTranslation\StringTranslationTrait;
use Drupal\form_test\Callbacks;

/**
 * Hook implementations for form_test.
 */
class FormTestHooks {
  use StringTranslationTrait;
  public function __construct(protected ElementInfoManagerInterface $elementInfoManager) {
  }
  
  /**
   * Implements hook_form_FORM_ID_alter().
   */
  public function blockFormFormTestAlterFormAlter(&$form, FormStateInterface $form_state) : void {
    \Drupal::messenger()->addStatus('block_form_form_test_alter_form_alter() executed.');
  }
  
  /**
   * Implements hook_form_alter().
   */
  public function formAlter(&$form, FormStateInterface $form_state, $form_id) : void {
    if ($form_id == 'form_test_alter_form') {
      \Drupal::messenger()->addStatus('form_test_form_alter() executed.');
    }
  }
  
  /**
   * Implements hook_form_FORM_ID_alter().
   */
  public function formFormTestAlterFormAlter(&$form, FormStateInterface $form_state) : void {
    \Drupal::messenger()->addStatus('form_test_form_form_test_alter_form_alter() executed.');
  }
  
  /**
   * Implements hook_form_FORM_ID_alter().
   */
  public function systemFormFormTestAlterFormAlter(&$form, FormStateInterface $form_state) : void {
    \Drupal::messenger()->addStatus('system_form_form_test_alter_form_alter() executed.');
  }
  
  /**
   * Implements hook_form_FORM_ID_alter() for the registration form.
   */
  public function formUserRegisterFormAlter(&$form, FormStateInterface $form_state) : void {
    $submit = $this->elementInfoManager
      ->fromRenderable($form)
      ->createChild('test_rebuild', Submit::class);
    $submit->value = $this->t('Rebuild');
    $submit->submit = [
      [
        Callbacks::class,
        'userRegisterFormRebuild',
      ],
    ];
  }
  
  /**
   * Implements hook_form_FORM_ID_alter() for form_test_vertical_tabs_access_form().
   */
  public function formFormTestVerticalTabsAccessFormAlter(&$form, &$form_state, $form_id) : void {
    $element_object = $this->elementInfoManager
      ->fromRenderable($form);
    $element_object->getChild('vertical_tabs1')->access = FALSE;
    $element_object->getChild('vertical_tabs2')->access = FALSE;
    $element_object->getChild('tab3')->access = FALSE;
    $element_object->getChild('fieldset1')->access = FALSE;
    $element_object->getChild('container')->access = FALSE;
  }

}