function template_preprocess_system_themes_page in Drupal 9

Same name and namespace in other branches

1. 8 core/modules/system/system.admin.inc \template_preprocess_system_themes_page()

Prepares variables for appearance page templates.

Default template: system-themes-page.html.twig.

Parameters

$variables: An associative array containing:

• theme_groups: An associative array containing groups of themes.
• theme_group_titles: An associative array containing titles of themes.

File

core/modules/system/system.admin.inc, line 258

Admin page callbacks for the system module.

Code

function template_preprocess_system_themes_page(&$variables) {
  $groups = [];
  $theme_groups = $variables['theme_groups'];
  $variables['attributes']['id'] = 'system-themes-page';
  foreach ($variables['theme_group_titles'] as $state => $title) {
    if (!count($theme_groups[$state])) {

      // Skip this group of themes if no theme is there.
      continue;
    }

    // Start new theme group.
    $theme_group = [];
    $theme_group['state'] = $state;
    $theme_group['title'] = $title;
    $theme_group['themes'] = [];
    $theme_group['attributes'] = new Attribute();
    foreach ($theme_groups[$state] as $theme) {
      $current_theme = [];

      // Screenshot depicting the theme.
      if ($theme->screenshot) {
        $current_theme['screenshot'] = [
          '#theme' => 'image',
          '#uri' => $theme->screenshot['uri'],
          '#alt' => $theme->screenshot['alt'],
          '#title' => $theme->screenshot['title'],
          '#attributes' => $theme->screenshot['attributes'],
        ];
      }
      else {
        $current_theme['screenshot'] = [
          '#theme' => 'image',
          '#uri' => \Drupal::service('extension.list.module')
            ->getPath('system') . '/images/no_screenshot.png',
          '#alt' => t('No screenshot'),
          '#title' => t('No screenshot'),
          '#attributes' => new Attribute([
            'class' => [
              'no-screenshot',
            ],
          ]),
        ];
      }

      // Localize the theme description.
      $current_theme['description'] = t($theme->info['description']);
      $current_theme['attributes'] = new Attribute();
      $current_theme['name'] = $theme->info['name'];
      $current_theme['version'] = isset($theme->info['version']) ? $theme->info['version'] : '';
      $current_theme['notes'] = $theme->notes;
      $current_theme['is_default'] = $theme->is_default;
      $current_theme['is_admin'] = $theme->is_admin;
      $current_theme['module_dependencies'] = !empty($theme->module_dependencies_list) ? [
        '#theme' => 'item_list',
        '#items' => $theme->module_dependencies_list,
        '#context' => [
          'list_style' => 'comma-list',
        ],
      ] : [];

      // Make sure to provide feedback on compatibility.
      $current_theme['incompatible'] = '';
      if (!empty($theme->info['core_incompatible'])) {
        $current_theme['incompatible'] = t("This theme is not compatible with Drupal @core_version. Check that the .info.yml file contains a compatible 'core' or 'core_version_requirement' value.", [
          '@core_version' => \Drupal::VERSION,
        ]);
      }
      elseif (!empty($theme->incompatible_region)) {
        $current_theme['incompatible'] = t("This theme is missing a 'content' region.");
      }
      elseif (!empty($theme->incompatible_php)) {
        if (substr_count($theme->info['php'], '.') < 2) {
          $theme->info['php'] .= '.*';
        }
        $current_theme['incompatible'] = t('This theme requires PHP version @php_required and is incompatible with PHP version @php_version.', [
          '@php_required' => $theme->info['php'],
          '@php_version' => phpversion(),
        ]);
      }
      elseif (!empty($theme->incompatible_base)) {
        $current_theme['incompatible'] = t('This theme requires the base theme @base_theme to operate correctly.', [
          '@base_theme' => $theme->info['base theme'],
        ]);
      }
      elseif (!empty($theme->incompatible_engine)) {
        $current_theme['incompatible'] = t('This theme requires the theme engine @theme_engine to operate correctly.', [
          '@theme_engine' => $theme->info['engine'],
        ]);
      }
      elseif (!empty($theme->incompatible_module)) {
        $current_theme['incompatible'] = t('This theme requires the listed modules to operate correctly.');
      }
      elseif (!empty($theme->module_dependencies_disabled)) {
        if (!empty($theme->insufficient_module_permissions)) {
          $current_theme['incompatible'] = t('This theme requires the listed modules to operate correctly. They must first be enabled by a user with permissions to do so.');
        }
        else {
          $modules_url = (string) Url::fromRoute('system.modules_list')
            ->toString();
          $current_theme['incompatible'] = t('This theme requires the listed modules to operate correctly. They must first be enabled via the <a href=":modules_url">Extend page</a>.', [
            ':modules_url' => $modules_url,
          ]);
        }
      }

      // Build operation links.
      $current_theme['operations'] = [
        '#theme' => 'links',
        '#links' => $theme->operations,
        '#attributes' => [
          'class' => [
            'operations',
            'clearfix',
          ],
        ],
      ];
      $theme_group['themes'][] = $current_theme;
    }
    $groups[] = $theme_group;
  }
  $variables['theme_groups'] = $groups;
}