commerce_promo_bar.module

<?php

/**
 * @file
 * Provides a commerce promo bar entity type.
 */

use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Render\Element;
use Drupal\commerce_promo_bar\Entity\PromoBarInterface;

/**
 * Implements hook_theme().
 */
function commerce_promo_bar_theme() {
  return [
    'commerce_promo_bar' => [
      'render element' => 'elements',
    ],
    'commerce_promo_bar_block' => [
      'variables' => [
        'promo_bars' => [],
      ],
      'template' => 'commerce-promo-bar-block',
    ],
    'commerce_promo_bar_form' => [
      'render element' => 'form',
    ],
  ];
}

/**
 * Prepares variables for commerce promo bar templates.
 *
 * Default template: commerce-promo_bar.html.twig.
 *
 * @param array $variables
 *   An associative array containing:
 *   - elements: An associative array containing the commerce promo bar
 *     information and any fields attached to the entity.
 *   - attributes: HTML attributes for the containing element.
 */
function template_preprocess_commerce_promo_bar(array &$variables) {
  $variables['view_mode'] = $variables['elements']['#view_mode'];
  /** @var \Drupal\commerce_promo_bar\Entity\PromoBarInterface $commerce_promo_bar */
  $commerce_promo_bar = $variables['elements']['#commerce_promo_bar'];
  $variables['promo_bar_entity'] = $commerce_promo_bar;
  $variables['promo_bar'] = [];
  foreach (Element::children($variables['elements']) as $key) {
    $variables['promo_bar'][$key] = $variables['elements'][$key];
  }
  $variables['promo_bar']['dismissible'] = $commerce_promo_bar->isDismissible();
}

/**
 * Implement template_preprocess_field().
 */
function commerce_promo_bar_preprocess_field(&$variables, $hook) {
  $element = $variables['element'];

  // Replacing tokens from body with real values.
  if (isset($element['#entity_type'], $element['#field_name'], $element['#object'])) {
    if ($element['#entity_type'] === 'commerce_promo_bar' && $element['#field_name'] === 'body' && $element['#object'] instanceof PromoBarInterface) {
      $token_service = \Drupal::token();

      $delta = 0;
      while (!empty($element[$delta])) {
        $variables['items'][$delta]['content']['#text'] = $token_service->replace($variables['items'][$delta]['content']['#text'], [
          'commerce_promo_bar' => $element['#object'],
        ]);
        $delta++;
      }
    }
  }
}

/**
 * Implements hook_entity_base_field_info_alter().
 */
function commerce_promo_bar_entity_base_field_info_alter(&$fields, EntityTypeInterface $entity_type) {
  if ($entity_type->id() === 'commerce_promo_bar') {
    $config = \Drupal::config('commerce_promo_bar.settings');
    $fields['text_color']['default_value'] = $config->get('text_color');
    $fields['background_color']['default_value'] = $config->get('background_color');
  }
}