maestro-3.0.1-rc2/src/Form/MaestroTemplateDeleteForm.php

<?php

namespace Drupal\maestro\Form;

use Drupal\Core\Entity\EntityConfirmFormBase;
use Drupal\Core\Url;
use Drupal\Core\Form\FormStateInterface;
use Drupal\maestro\Engine\MaestroEngine;

/**
 * Class MaestroTemplateDeleteForm.
 *
 * @package Drupal\maestro\Form
 *
 * @ingroup maestro
 */
class MaestroTemplateDeleteForm extends EntityConfirmFormBase {

  /**
   * {@inheritdoc}
   */
  public function getDescription() {
    // let's see if there's any open processes using this template and tell the user that there's open processes that will be jettisoned.
    $count_warning = '';
    $query = \Drupal::entityQuery('maestro_process')
      ->accessCheck(FALSE)
      ->condition('template_id', $this->entity->id);
    $res = $query->execute();
    $count = count($res);

    if ($count > 1) {
      return $this->t('<strong style="color: red; font-size: 1.2em;">Warning!</strong>  There are %count open processes attached to this Template.
          Deleting this process will remove all associated Maestro data.  This action cannot be undone.', [
            '%count' => $count,
          ]);
    }
    elseif ($count == 1) {
      return $this->t('<strong style="color: red; font-size: 1.2em;">Warning!</strong>  There is %count open process attached to this Template.
          Deleting this process will remove all associated Maestro data.  This action cannot be undone.', [
            '%count' => $count,
          ]);
    }
    return $this->t('This action cannot be undone.');
  }

  /**
   * Gathers a confirmation question.
   *
   * @return string
   *   Translated string.
   */
  public function getQuestion() {
    return $this->t('Are you sure you want to delete Template %label?', [
      '%label' => $this->entity->label(),
    ]);
  }

  /**
   * Gather the confirmation text.
   *
   * @return string
   *   Translated string.
   */
  public function getConfirmText() {
    return $this->t('Delete Template');
  }

  /**
   * Gets the cancel route.
   *
   * @return \Drupal\Core\Url
   *   Returns a formatted Drupal URL.
   */
  public function getCancelUrl() {
    return new Url('entity.maestro_template.list');
  }

  /**
   * The submit handler for the confirm form.
   *
   * @param array $form
   *   An associative array containing the structure of the form.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The form's form state.
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    // Delete all open processes with this template.
    $query = \Drupal::entityQuery('maestro_process')
      ->accessCheck(FALSE)
      ->condition('template_id', $this->entity->id);
    $entityIDs = $query->execute();
    foreach ($entityIDs as $processID) {
      MaestroEngine::deleteProcess($processID);
    }

    // Delete the entity.
    $this->entity->delete();

    // Set a message that the entity was deleted.
    \Drupal::messenger()->addMessage(t('Template %label was deleted.', [
      '%label' => $this->entity->label(),
    ]));

    // Redirect the user to the list controller when complete.
    $form_state->setRedirect('entity.maestro_template.list');
  }

}