ConfirmFormTestForm.php

<?php

namespace Drupal\form_test;

use Drupal\Core\Form\ConfirmFormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Url;

/**
 * Provides a test confirmation form.
 *
 * @internal
 */
class ConfirmFormTestForm extends ConfirmFormBase {
    
    /**
     * {@inheritdoc}
     */
    public function getFormId() {
        return 'form_test_confirm_test_form';
    }
    
    /**
     * {@inheritdoc}
     */
    public function getQuestion() {
        return $this->t('ConfirmFormTestForm::getQuestion().');
    }
    
    /**
     * {@inheritdoc}
     */
    public function getCancelUrl() {
        return new Url('form_test.route8');
    }
    
    /**
     * {@inheritdoc}
     */
    public function getDescription() {
        return $this->t('ConfirmFormTestForm::getDescription().');
    }
    
    /**
     * {@inheritdoc}
     */
    public function getConfirmText() {
        return $this->t('ConfirmFormTestForm::getConfirmText().');
    }
    
    /**
     * {@inheritdoc}
     */
    public function getCancelText() {
        return $this->t('ConfirmFormTestForm::getCancelText().');
    }
    
    /**
     * {@inheritdoc}
     */
    public function buildForm(array $form, FormStateInterface $form_state) {
        $form['element'] = [
            '#markup' => '<p>The ConfirmFormTestForm::buildForm() method was used for this form.</p>',
        ];
        return parent::buildForm($form, $form_state);
    }
    
    /**
     * {@inheritdoc}
     */
    public function submitForm(array &$form, FormStateInterface $form_state) {
        $this->messenger()
            ->addStatus($this->t('The ConfirmFormTestForm::submitForm() method was used for this form.'));
        $form_state->setRedirect('<front>');
    }

}