function system_theme_default

Menu callback; Set the default theme.

File

modules/system/system.admin.inc, line 346

Code

function system_theme_default() {
    if (isset($_REQUEST['theme']) && isset($_REQUEST['token']) && drupal_valid_token($_REQUEST['token'], 'system-theme-operation-link')) {
        $theme = $_REQUEST['theme'];
        // Get current list of themes.
        $themes = list_themes();
        // Check if the specified theme is one recognized by the system.
        if (!empty($themes[$theme])) {
            // Enable the theme if it is currently disabled.
            if (empty($themes[$theme]->status)) {
                theme_enable(array(
                    $theme,
                ));
            }
            // Set the default theme.
            variable_set('theme_default', $theme);
            // Rebuild the menu. This duplicates the menu_rebuild() in theme_enable().
            // However, modules must know the current default theme in order to use
            // this information in hook_menu() or hook_menu_alter() implementations,
            // and doing the variable_set() before the theme_enable() could result
            // in a race condition where the theme is default but not enabled.
            menu_rebuild();
            // The status message depends on whether an admin theme is currently in use:
            // a value of 0 means the admin theme is set to be the default theme.
            $admin_theme = variable_get('admin_theme', 0);
            if ($admin_theme != 0 && $admin_theme != $theme) {
                drupal_set_message(t('Please note that the administration theme is still set to the %admin_theme theme; consequently, the theme on this page remains unchanged. All non-administrative sections of the site, however, will show the selected %selected_theme theme by default.', array(
                    '%admin_theme' => $themes[$admin_theme]->info['name'],
                    '%selected_theme' => $themes[$theme]->info['name'],
                )));
            }
            else {
                drupal_set_message(t('%theme is now the default theme.', array(
                    '%theme' => $themes[$theme]->info['name'],
                )));
            }
        }
        else {
            drupal_set_message(t('The %theme theme was not found.', array(
                '%theme' => $theme,
            )), 'error');
        }
        drupal_goto('admin/appearance');
    }
    return MENU_ACCESS_DENIED;
}