commerce-8.x-2.8/modules/order/src/Form/OrderUnlockForm.php

<?php

namespace Drupal\commerce_order\Form;

use Drupal\Core\Entity\ContentEntityConfirmFormBase;
use Drupal\Core\Form\FormStateInterface;

/**
 * Provides a confirmation form for unlocking orders.
 */
class OrderUnlockForm extends ContentEntityConfirmFormBase {

  /**
   * {@inheritdoc}
   */
  public function getQuestion() {
    return $this->t('Are you sure you want to unlock the order %label?', [
      '%label' => $this->entity->label(),
    ]);
  }

  /**
   * {@inheritdoc}
   */
  public function getConfirmText() {
    return $this->t('Unlock');
  }

  /**
   * {@inheritdoc}
   */
  public function getCancelUrl() {
    return $this->entity->toUrl('collection');
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    /** @var \Drupal\commerce_order\Entity\OrderInterface $order */
    $order = $this->entity;
    $order->unlock();
    $order->save();

    $this->messenger()->addMessage($this->t('The order %label has been unlocked.', [
      '%label' => $order->label(),
    ]));
    $form_state->setRedirectUrl($order->toUrl('collection'));
  }

}