view_modes_display.module

<?php

use Drupal\Core\Entity\EntityInterface;
/**
 * @file
 * Contains view_modes_display.module..
 */

use Drupal\Core\Routing\RouteMatchInterface;
use \Drupal\view_modes_display\EntityTypeInfo;

/**
 * Implements hook_help().
 */
function view_modes_display_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    // Main module help for the view_modes_display module.
    case 'help.page.view_modes_display':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('Preview view modes for every entity type') . '</p>';
      return $output;

    default:
  }
}

/**
 * Implements hook_theme().
 */
function view_modes_display_theme() {
  $theme = [];

  return $theme;
}

/**
 * Implements hook_entity_type_alter().
 */
function view_modes_display_entity_type_alter(array &$entity_types) {
  return \Drupal::service('class_resolver')
    ->getInstanceFromDefinition(EntityTypeInfo::class)
    ->entityTypeAlter($entity_types);
}

/**
 * Implements hook_entity_operation().
 */
function view_modes_display_entity_operation(EntityInterface $entity) {
  return \Drupal::service('class_resolver')
    ->getInstanceFromDefinition(EntityTypeInfo::class)
    ->entityOperation($entity);
}