CommentTypeForm.php

<?php

namespace Drupal\comment;

use Drupal\Core\Entity\EntityForm;
use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Entity\EntityTypeManagerInterface;
use Drupal\Core\Entity\FieldableEntityInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\language\Entity\ContentLanguageSettings;
use Psr\Log\LoggerInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Base form handler for comment type edit forms.
 *
 * @internal
 */
class CommentTypeForm extends EntityForm {
    
    /**
     * Entity type manager service.
     *
     * @var \Drupal\Core\Entity\EntityTypeManagerInterface
     */
    protected $entityTypeManager;
    
    /**
     * A logger instance.
     *
     * @var \Psr\Log\LoggerInterface
     */
    protected $logger;
    
    /**
     * The comment manager.
     *
     * @var \Drupal\comment\CommentManagerInterface
     */
    protected $commentManager;
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container) {
        return new static($container->get('entity_type.manager'), $container->get('logger.factory')
            ->get('comment'), $container->get('comment.manager'));
    }
    
    /**
     * Constructs a CommentTypeFormController.
     *
     * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
     *   The entity type manager service.
     * @param \Psr\Log\LoggerInterface $logger
     *   A logger instance.
     * @param \Drupal\comment\CommentManagerInterface $comment_manager
     *   The comment manager.
     */
    public function __construct(EntityTypeManagerInterface $entity_type_manager, LoggerInterface $logger, CommentManagerInterface $comment_manager) {
        $this->entityTypeManager = $entity_type_manager;
        $this->logger = $logger;
        $this->commentManager = $comment_manager;
    }
    
    /**
     * {@inheritdoc}
     */
    public function form(array $form, FormStateInterface $form_state) {
        $form = parent::form($form, $form_state);
        $comment_type = $this->entity;
        if ($this->operation === 'edit') {
            $form['#title'] = $this->t('Edit %label comment type', [
                '%label' => $comment_type->label(),
            ]);
        }
        $form['label'] = [
            '#type' => 'textfield',
            '#title' => $this->t('Label'),
            '#maxlength' => 255,
            '#default_value' => $comment_type->label(),
            '#description' => $this->t('The human-readable name for this comment type, displayed on the <em>Comment types</em> page.'),
            '#required' => TRUE,
        ];
        $form['id'] = [
            '#type' => 'machine_name',
            '#default_value' => $comment_type->id(),
            '#machine_name' => [
                'exists' => '\\Drupal\\comment\\Entity\\CommentType::load',
            ],
            '#description' => $this->t('Unique machine-readable name: lowercase letters, numbers, and underscores only.'),
            '#maxlength' => EntityTypeInterface::BUNDLE_MAX_LENGTH,
            '#disabled' => !$comment_type->isNew(),
        ];
        $form['description'] = [
            '#type' => 'textarea',
            '#default_value' => $comment_type->getDescription(),
            '#description' => $this->t('Displays on the <em>Comment types</em> page.'),
            '#title' => $this->t('Description'),
        ];
        if ($comment_type->isNew()) {
            $options = [];
            // Only expose entities that have field UI enabled, only those can
            // get comment fields added in the UI. Also, ensure to include only
            // entities that have integer id.
            foreach ($this->entityTypeManager
                ->getDefinitions() as $entity_type) {
                if ($this->entityTypeSupportsComments($entity_type)) {
                    if ($entity_type->get('field_ui_base_route')) {
                        $options[$entity_type->id()] = $entity_type->getLabel();
                    }
                }
            }
            $form['target_entity_type_id'] = [
                '#type' => 'select',
                '#default_value' => $comment_type->getTargetEntityTypeId(),
                '#title' => $this->t('Target entity type'),
                '#required' => TRUE,
                '#empty_value' => '_none',
                '#options' => $options,
                '#description' => $this->t('The target entity type can not be changed after the comment type has been created.'),
            ];
        }
        else {
            $form['target_entity_type_id_display'] = [
                '#type' => 'item',
                '#markup' => $this->entityTypeManager
                    ->getDefinition($comment_type->getTargetEntityTypeId())
                    ->getLabel(),
                '#title' => $this->t('Target entity type'),
            ];
        }
        if ($this->moduleHandler
            ->moduleExists('content_translation')) {
            $form['language'] = [
                '#type' => 'details',
                '#title' => $this->t('Language settings'),
                '#group' => 'additional_settings',
            ];
            $language_configuration = ContentLanguageSettings::loadByEntityTypeBundle('comment', $comment_type->id());
            $form['language']['language_configuration'] = [
                '#type' => 'language_configuration',
                '#entity_information' => [
                    'entity_type' => 'comment',
                    'bundle' => $comment_type->id(),
                ],
                '#default_value' => $language_configuration,
            ];
            $form['#submit'][] = 'language_configuration_element_submit';
        }
        $form['actions'] = [
            '#type' => 'actions',
        ];
        $form['actions']['submit'] = [
            '#type' => 'submit',
            '#value' => $this->t('Save'),
        ];
        return $form;
    }
    
    /**
     * Wraps _comment_entity_uses_integer_id().
     *
     * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
     *   Entity type being tested.
     *
     * @return bool
     *   TRUE if entity-type uses integer IDs.
     */
    protected function entityTypeSupportsComments(EntityTypeInterface $entity_type) {
        return $entity_type->entityClassImplements(FieldableEntityInterface::class) && _comment_entity_uses_integer_id($entity_type->id());
    }
    
    /**
     * {@inheritdoc}
     */
    public function save(array $form, FormStateInterface $form_state) {
        $comment_type = $this->entity;
        $status = $comment_type->save();
        $edit_link = $this->entity
            ->toLink($this->t('Edit'), 'edit-form')
            ->toString();
        if ($status == SAVED_UPDATED) {
            $this->messenger()
                ->addStatus($this->t('Comment type %label has been updated.', [
                '%label' => $comment_type->label(),
            ]));
            $this->logger
                ->notice('Comment type %label has been updated.', [
                '%label' => $comment_type->label(),
                'link' => $edit_link,
            ]);
        }
        else {
            $this->commentManager
                ->addBodyField($comment_type->id());
            $this->messenger()
                ->addStatus($this->t('Comment type %label has been added.', [
                '%label' => $comment_type->label(),
            ]));
            $this->logger
                ->notice('Comment type %label has been added.', [
                '%label' => $comment_type->label(),
                'link' => $edit_link,
            ]);
        }
        $form_state->setRedirectUrl($comment_type->toUrl('collection'));
    }

}