requirement.module

<?php

/**
 * Copyright 2019 Google LLC
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License version 2 as published by the
 * Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
 * License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Template\Attribute;

/**
 * Implements hook_help().
 */
function requirement_help($route_name, RouteMatchInterface $route_match) {
  if ($route_name === 'requirement.report') {
    return '<p>' . t('Here you can find a short overview of requirements and recommendations for this site.') . '</p>';
  }
}

/**
 * Implements hook_theme().
 */
function requirement_theme($existing, $type, $theme, $path) {
  return [
    'requirement_report' => [
      'variables' => [
        'requirement' => NULL,
      ],
    ],
    'requirements_report_page' => [
      'variables' => [
        'requirement' => NULL,
      ],
    ],
  ];
}

/**
 * Preprocesses variables for the requirement-report template.
 */
function template_preprocess_requirement_report(&$variables) {
  /** @var \Drupal\requirement\Plugin\RequirementInterface $requirement */
  $requirement = $variables['requirement'];

  $variables['attributes'] = new Attribute();
  $variables['label'] = $requirement->getLabel();
  $variables['description'] = $requirement->getDescription();
  $variables['is_completed'] = $requirement->isCompleted();
  $variables['severity'] = $requirement->getSeverity();
  $variables['button'] = $requirement->getActionButton();

  $variables['#attached']['library'][] = 'requirement/requirement_report';
}