StatusReport.php

<?php

namespace Drupal\Core\Render\Element;

use Drupal\Core\Render\Attribute\RenderElement;

/**
 * Creates status report page element.
 */
class StatusReport extends RenderElementBase {
    
    /**
     * {@inheritdoc}
     */
    public function getInfo() {
        $class = static::class;
        return [
            '#theme' => 'status_report_grouped',
            '#priorities' => [
                'error',
                'warning',
                'checked',
                'ok',
            ],
            '#pre_render' => [
                [
                    $class,
                    'preRenderGroupRequirements',
                ],
            ],
        ];
    }
    
    /**
     * #pre_render callback to group requirements.
     */
    public static function preRenderGroupRequirements($element) {
        $severities = static::getSeverities();
        $grouped_requirements = [];
        foreach ($element['#requirements'] as $key => $requirement) {
            $severity = $severities[REQUIREMENT_INFO];
            if (isset($requirement['severity'])) {
                $requirement_severity = (int) $requirement['severity'] === REQUIREMENT_OK ? REQUIREMENT_INFO : (int) $requirement['severity'];
                $severity = $severities[$requirement_severity];
            }
            elseif (defined('MAINTENANCE_MODE') && MAINTENANCE_MODE == 'install') {
                $severity = $severities[REQUIREMENT_OK];
            }
            $grouped_requirements[$severity['status']]['title'] = $severity['title'];
            $grouped_requirements[$severity['status']]['type'] = $severity['status'];
            $grouped_requirements[$severity['status']]['items'][$key] = $requirement;
        }
        // Order the grouped requirements by a set order.
        $order = array_flip($element['#priorities']);
        uksort($grouped_requirements, function ($a, $b) use ($order) {
            return $order[$a] <=> $order[$b];
        });
        $element['#grouped_requirements'] = $grouped_requirements;
        return $element;
    }
    
    /**
     * Gets the severities.
     *
     * @return array
     */
    public static function getSeverities() {
        return [
            REQUIREMENT_INFO => [
                'title' => t('Checked', [], [
                    'context' => 'Examined',
                ]),
                'status' => 'checked',
            ],
            REQUIREMENT_OK => [
                'title' => t('OK'),
                'status' => 'ok',
            ],
            REQUIREMENT_WARNING => [
                'title' => t('Warnings found'),
                'status' => 'warning',
            ],
            REQUIREMENT_ERROR => [
                'title' => t('Errors found'),
                'status' => 'error',
            ],
        ];
    }

}