theme.maintenance.inc

<?php


/**
 * @file
 * Theming for maintenance pages.
 */
use Drupal\Core\Installer\InstallerKernel;
use Drupal\Core\Site\Settings;

/**
 * Sets up the theming system for maintenance page.
 *
 * Used for site installs, updates and when the site is in maintenance mode.
 * It also applies when the database is unavailable or bootstrap was not
 * complete. Seven is always used for the initial install and update
 * operations. In other cases, Bartik is used, but this can be overridden by
 * setting a "maintenance_theme" key in the $settings variable in settings.php.
 */
function _drupal_maintenance_theme() {
    // If the theme is already set, assume the others are set too, and do nothing.
    if (\Drupal::theme()->hasActiveTheme()) {
        return;
    }
    require_once __DIR__ . '/theme.inc';
    require_once __DIR__ . '/common.inc';
    require_once __DIR__ . '/unicode.inc';
    require_once __DIR__ . '/file.inc';
    require_once __DIR__ . '/module.inc';
    require_once __DIR__ . '/database.inc';
    // Install and update pages are treated differently to prevent theming overrides.
    if (defined('MAINTENANCE_MODE') && (MAINTENANCE_MODE == 'install' || MAINTENANCE_MODE == 'update')) {
        if (InstallerKernel::installationAttempted()) {
            $custom_theme = $GLOBALS['install_state']['theme'];
        }
        else {
            $custom_theme = Settings::get('maintenance_theme', 'seven');
        }
    }
    else {
        // Use the maintenance theme if specified, otherwise attempt to use the
        // default site theme.
        try {
            $custom_theme = Settings::get('maintenance_theme', '');
            if (!$custom_theme) {
                $config = \Drupal::config('system.theme');
                $custom_theme = $config->get('default');
            }
        } catch (\Exception $e) {
            // Whatever went wrong (often a database connection problem), we are
            // about to fall back to a sensible theme so there is no need for special
            // handling.
        }
        if (!$custom_theme) {
            // We have been unable to identify the configured theme, so fall back to
            // a safe default. Bartik is reasonably user friendly and fairly generic.
            $custom_theme = 'bartik';
        }
    }
    $themes = \Drupal::service('theme_handler')->listInfo();
    // If no themes are installed yet, or if the requested custom theme is not
    // installed, retrieve all available themes.
    
    /** @var \Drupal\Core\Theme\ThemeInitialization $theme_init */
    $theme_init = \Drupal::service('theme.initialization');
    $theme_handler = \Drupal::service('theme_handler');
    if (empty($themes) || !isset($themes[$custom_theme])) {
        $themes = \Drupal::service('extension.list.theme')->getList();
        $theme_handler->addTheme($themes[$custom_theme]);
    }
    // \Drupal\Core\Extension\ThemeHandlerInterface::listInfo() triggers a
    // \Drupal\Core\Extension\ModuleHandler::alter() in maintenance mode, but we
    // can't let themes alter the .info.yml data until we know a theme's base
    // themes. So don't set active theme until after
    // \Drupal\Core\Extension\ThemeHandlerInterface::listInfo() builds its cache.
    $theme = $custom_theme;
    // Find all our ancestor themes and put them in an array.
    // @todo This is just a workaround. Find a better way how to handle themes
    //   on maintenance pages, see https://www.drupal.org/node/2322619.
    // This code is basically a duplicate of
    // \Drupal\Core\Theme\ThemeInitialization::getActiveThemeByName.
    $base_themes = [];
    $ancestor = $theme;
    while ($ancestor && isset($themes[$ancestor]->base_theme)) {
        $base_themes[] = $themes[$themes[$ancestor]->base_theme];
        $ancestor = $themes[$ancestor]->base_theme;
        if ($ancestor) {
            // Ensure that the base theme is added and installed.
            $theme_handler->addTheme($themes[$ancestor]);
        }
    }
    \Drupal::theme()->setActiveTheme($theme_init->getActiveTheme($themes[$custom_theme], $base_themes));
    // Prime the theme registry.
    Drupal::service('theme.registry');
}

/**
 * Prepares variables for authorize.php operation report templates.
 *
 * This report displays the results of an operation run via authorize.php.
 *
 * Default template: authorize-report.html.twig.
 *
 * @param array $variables
 *   An associative array containing:
 *   - messages: An array of result messages.
 */
function template_preprocess_authorize_report(&$variables) {
    $messages = [];
    if (!empty($variables['messages'])) {
        foreach ($variables['messages'] as $heading => $logs) {
            $items = [];
            foreach ($logs as $number => $log_message) {
                if ($number === '#abort') {
                    continue;
                }
                $class = 'authorize-results__' . ($log_message['success'] ? 'success' : 'failure');
                $items[] = [
                    '#wrapper_attributes' => [
                        'class' => [
                            $class,
                        ],
                    ],
                    '#markup' => $log_message['message'],
                ];
            }
            $messages[] = [
                '#theme' => 'item_list',
                '#items' => $items,
                '#title' => $heading,
            ];
        }
    }
    $variables['messages'] = $messages;
}