a12s-1.0.0-beta7/modules/theme_builder/a12s_theme_builder.module

<?php

/**
 * @file
 * Primary module hooks for A12s Theme Builder module.
 */

use Drupal\a12s_theme_builder\Block\LanguageSwitcher;
use Drupal\a12s_theme_builder\Block\SettingsAlterBase;
use Drupal\block\BlockInterface;
use Drupal\Core\Block\BlockPluginInterface;
use Drupal\Core\Entity\EntityForm;
use Drupal\Core\Form\FormStateInterface;

/**
 * Implements hook_theme().
 */
function a12s_theme_builder_theme($existing, $type, $theme, $path): array {
  return [
    'user_login_form' => [
      'render element' => 'form',
    ],
  ];
}

/**
 * Add extra variables to "menu" derived themes, to provide some suggestions.
 *
 * @see hook_theme_registry_alter()
 */
function a12s_theme_builder_theme_registry_alter(array &$themeRegistry): void {
  $path = \Drupal::service('extension.list.module')->getPath('a12s_theme_builder');

  if ($element = &$themeRegistry['menu']) {
    $element['theme path'] = $path;
    $element['path'] = $path . '/templates';
  }

//   $menuThemes = preg_grep('/^menu(?:__.*)?$/', array_keys($themeRegistry));
//
//  foreach ($menuThemes as $key) {
//    if (isset($themeRegistry[$key]['variables'])) {
//      $themeRegistry[$key]['variables'] += [
//        'block_id' => NULL,
//        'block_region' => NULL,
//      ];
//    }
//  }
}

/**
 * Preprocess all templates.
 *
 * @see hook_preprocess()
 */
function a12s_theme_builder_preprocess(array &$variables): void {
  $variables['base_path'] = base_path();
  /** @var \Drupal\Core\Theme\ActiveTheme $currentTheme */
  $currentTheme = \Drupal::service('theme.manager')->getActiveTheme();
  $variables['theme_path'] = base_path() . $currentTheme->getPath();
}

/**
 * Add extra options to the block configuration form.
 *
 * @see hook_form_FORM_ID_alter()
 */
function a12s_theme_builder_form_block_form_alter(array &$form, FormStateInterface $formState): void {
  $formObject = $formState->getFormObject();

  if ($formObject instanceof EntityForm) {
    $entity = $formObject->getEntity();

    if ($entity instanceof BlockInterface) {
      foreach (SettingsAlterBase::BLOCK_SETTINGS_ALTER_CLASSES as $class) {
        call_user_func_array([$class, 'alterForm'], [$entity, &$form, $formState]);
      }
    }
  }
}

/**
 * Add menu attributes to the block content.
 *
 * @see \hook_preprocess_HOOK()
 * @see hook_block_build_BASE_BLOCK_ID_alter()
 */
function a12s_theme_builder_preprocess_block(array &$variables): void {
  // Preprocess "language switcher" blocks.
  if (!empty($variables['elements']['#a12s_theme_builder']['language_switcher'])) {
    \Drupal::classResolver(LanguageSwitcher::class)->preprocessBlock($variables, $variables['elements']['#a12s_theme_builder']['language_switcher']);
  }

  // Special case with block wrapper: we need to force the ID if defined through
  // the standard #attributes array, as the Block module does not take care of
  // this and override defined ID.
  // @see template_preprocess_block()
  if (!empty($variables['elements']['#attributes']['id'])) {
    $variables['attributes']['id'] = $variables['elements']['#attributes']['id'];
  }
}

/**
 * @see hook_block_view_alter()
 */
function a12s_theme_builder_block_view_alter(array &$build, BlockPluginInterface $block): void {
  if ($build['#block'] instanceof BlockInterface) {
    foreach (SettingsAlterBase::BLOCK_SETTINGS_ALTER_CLASSES as $class) {
      call_user_func_array([$class, 'alterView'], [$build['#block'], &$build, $block]);
    }
  }
}