/**
  * Loads the import-data into the self::$import_data property.
  * The data was prepared by the import-preview screen.
  * Populates the response object.
  *
  * @since  2.0
  * @param  object $req Initial response object for JSON response.
  * @return object Updated response object.
  */
 private function prepare_import_data($req)
 {
     $data = json_decode(base64_decode(@$_POST['import_data']), true);
     if (is_array($data['meta']) && is_array($data['sidebars']) && is_array($data['options']) && is_array($data['widgets']) && is_array($data['categories'])) {
         $data['ignore'] = array();
         self::$import_data = $data;
         // Remove details that does not exist on current blog.
         $this->prepare_data();
         // "selected_data" only contains the items that were selected for import.
         $this->selected_data = self::$import_data;
         unset($this->selected_data['meta']);
         unset($this->selected_data['categories']);
         unset($this->selected_data['ignore']);
         if (!isset($_POST['import_plugin_config'])) {
             unset($this->selected_data['options']);
         }
         if (!isset($_POST['import_widgets'])) {
             unset($this->selected_data['widgets']);
         } else {
             foreach ($this->selected_data['widgets'] as $id => $widgets) {
                 $key = 'import_sb_' . $id;
                 if (!isset($_POST[$key])) {
                     unset($this->selected_data['widgets'][$id]);
                 }
             }
         }
         foreach ($this->selected_data['sidebars'] as $id => $sidebar) {
             $key = 'import_sb_' . $sidebar['id'];
             if (!isset($_POST[$key])) {
                 unset($this->selected_data['sidebars'][$id]);
             }
         }
         // Finally: Import the config!
         $req = $this->do_import($req);
     } else {
         return self::req_err($req, __('Something unexpected happened and we could not finish ' . 'the import. Please try again.', CSB_LANG));
     }
     return $req;
 }