_drupal_maintenance_theme

• Drupal 6
• Drupal 7

Versions

6 – 7

_drupal_maintenance_theme()

Sets up the theming system for site installs, updates and when the site is in maintenance mode. It also applies when the database is unavailable.

Seven is always used for the initial install and update operations. In other cases, Minnelli is used, but this can be overridden by setting a "maintenance_theme" key in the $conf variable in settings.php.

Code

includes/theme.maintenance.inc, line 16

<?php
function _drupal_maintenance_theme() {
  global $theme, $theme_key;

  // If $theme is already set, assume the others are set too, and do nothing.
  if (isset($theme)) {
    return;
  }

  require_once DRUPAL_ROOT . '/includes/path.inc';
  require_once DRUPAL_ROOT . '/includes/theme.inc';
  require_once DRUPAL_ROOT . '/includes/common.inc';
  require_once DRUPAL_ROOT . '/includes/unicode.inc';
  require_once DRUPAL_ROOT . '/includes/file.inc';
  require_once DRUPAL_ROOT . '/includes/module.inc';
  require_once DRUPAL_ROOT . '/includes/database/database.inc';
  unicode_check();

  // Install and update pages are treated differently to prevent theming overrides.
  if (defined('MAINTENANCE_MODE') && (MAINTENANCE_MODE == 'install' || MAINTENANCE_MODE == 'update')) {
    $custom_theme = 'seven';
  }
  else {
    if (!db_is_active()) {
      // Because we are operating in a crippled environment, we need to
      // bootstrap just enough to allow hook invocations to work.
      $module_list['system']['filename'] = 'modules/system/system.module';
      $module_list['filter']['filename'] = 'modules/filter/filter.module';
      module_list(TRUE, FALSE, FALSE, $module_list);
      drupal_load('module', 'system');
      drupal_load('module', 'filter');
    }

    $custom_theme = variable_get('maintenance_theme', 'minnelli');
  }

  $themes = list_themes();

  // list_themes() triggers a drupal_alter() in maintenance mode, but we can't
  // let themes alter the .info data until we know a theme's base themes. So
  // don't set global $theme until after list_themes() builds its cache.
  $theme = $custom_theme;

  // Store the identifier for retrieving theme settings with.
  $theme_key = $theme;

  // Find all our ancestor themes and put them in an array.
  $base_theme = array();
  $ancestor = $theme;
  while ($ancestor && isset($themes[$ancestor]->base_theme)) {
    $base_theme[] = $new_base_theme = $themes[$themes[$ancestor]->base_theme];
    $ancestor = $themes[$ancestor]->base_theme;
  }
  _drupal_theme_initialize($themes[$theme], array_reverse($base_theme), '_theme_load_offline_registry');

  // These are usually added from system_init() -except maintenance.css.
  // When the database is inactive it's not called so we add it here.
  drupal_add_css(drupal_get_path('module', 'system') . '/defaults.css');
  drupal_add_css(drupal_get_path('module', 'system') . '/system.css');
  drupal_add_css(drupal_get_path('module', 'system') . '/system-menus.css');
  drupal_add_css(drupal_get_path('module', 'system') . '/maintenance.css');
  drupal_add_css(drupal_get_path('module', 'system') . '/admin.css');
}
?>

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