flag_lists-4.0.x-dev/src/Form/FlaggingCollectionForm.php

<?php

namespace Drupal\flag_lists\Form;

use Drupal\Core\Entity\ContentEntityForm;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Entity\EntityFormInterface;

/**
 * Form controller for Flagging collection edit forms.
 *
 * @ingroup flag_lists
 */
class FlaggingCollectionForm extends ContentEntityForm {

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state) {
    /** @var \Drupal\flag_lists\Entity\FlaggingCollection $entity */
    $form = parent::buildForm($form, $form_state);

    $flaglistService = \Drupal::service('flaglists');
    $account = \Drupal::currentUser();

    $entity = $this->entity;

    $existing_flaglists = $flaglistService->getAllFlagForList(NULL, NULL);

    $options = [];
    foreach ($existing_flaglists as $flaglist) {
      if ($flaglist->hasBaseFlag()) {
        $options[$flaglist->get('id')] = $flaglist->label();
      }
    }

    $current_value = empty($entity->getBaseFlag()) ?
      FALSE : $entity->getBaseFlag()->id();

    $form['templateflag'] = [
      '#type' => 'select',
      '#title' => $this->t('Template flag'),
      '#required' => TRUE,
      '#options' => $options,
      '#default_value' => $current_value,
    ];

    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function save(array $form, FormStateInterface $form_state) {
    $entity = &$this->entity;

    // Save as a new revision if requested to do so.
    if (!$form_state->isValueEmpty('new_revision') && $form_state->getValue('new_revision') != FALSE) {
      $entity->setNewRevision();

      // If a new revision is created, save the current user as revision author.
      $entity->setRevisionCreationTime(\Drupal::time()->getRequestTime());
      $entity->setRevisionUserId(\Drupal::currentUser()->id());
    }
    else {
      $entity->setNewRevision(FALSE);
    }

    $status = parent::save($form, $form_state);

    switch ($status) {
      case SAVED_NEW:
        $this->messenger()
          ->addMessage($this->t('Created the %label Flagging collection.', [
            '%label' => $entity->label(),
          ]));
        break;

      default:
        $this->messenger()
          ->addMessage($this->t('Saved the %label Flagging collection.', [
            '%label' => $entity->label(),
          ]));
    }
    $form_state->setRedirect('entity.flagging_collection.canonical', ['flagging_collection' => $entity->id()]);
  }

  /**
   * {@inheritdoc}
   */
  public function validateForm(array &$form, FormStateInterface $form_state) {
    // Check that the name isn't empty.
    if (strlen($form_state->getValue('name')[0]['value']) == 0) {
      $form_state->setErrorByName('name', $this->t('Please provide a name.'));
    }
    // Check if this is a new instance or if we are editing an existing.
    if ($form_state->getFormObject() instanceof
      EntityFormInterface) {
      $entity_new =
        $form_state->getFormObject()->getEntity()->isNew();
    }

    // Verify that the name is not longer than 32 charaters.
    if (strlen($form_state->getValue('name')[0]['value']) > 32) {
      $form_state->setErrorByName('name', $this->t('Please provide a name that is maximum 32 characters long.'));
    }

    // Verify that the Flag doesn't already exist as that would
    // cause problem.
    $flagService = \Drupal::service('flag');
    // Create the machineId.
    $machineId = strtolower($form_state->getValue('name')[0]['value'] .
      '_' .
      $this->entity->getOwnerId());
    $machineId = preg_replace("/[^a-z0-9_]/", "_", $machineId);
    $exists = $flagService->getFlagById($machineId);
    // Check if this is a new instance.
    if (!empty($exists) && $entity_new) {
      $form_state->setErrorByName('name', $this->t('The Name is already in use. Please provide a unique name.'));
    }
    parent::validateForm($form, $form_state);
  }

}