'; } else { $output .= $indent . '

'; } } /** * Traverse elements to create list from elements. * * Display one element if the element doesn't have any children otherwise, * display the element and its children. Will only traverse up to the max * depth and no ignore elements under that depth. * * This method shouldn't be called directly, use the walk() method instead. * * @see Walker::start_el() * @since 2.5.0 * * @access public * @param mixed $element Data object. * @param mixed $children_elements List of elements to continue traversing. * @param mixed $max_depth Max depth to traverse. * @param mixed $depth Depth of current element. * @param mixed $args Arguments. * @param mixed $output Passed by reference. Used to append additional content. * @return null Null on failure with no changes to parameters. */ public function display_element( $element, &$children_elements, $max_depth, $depth, $args, &$output ) { if ( ! $element ) { return; } $id_field = $this->db_fields['id']; // Display this element. if ( is_object( $args[0] ) ) { $args[0]->has_children = ! empty( $children_elements[ $element->$id_field ] ); } parent::display_element( $element, $children_elements, $max_depth, $depth, $args, $output ); } /** * Menu Fallback * ============= * If this function is assigned to the wp_nav_menu's fallback_cb variable * and a menu has not been assigned to the theme location in the WordPress * menu manager the function with display nothing to a non-logged in user, * and will add a link to the WordPress menu manager if logged in as an admin. * * @param array $args passed from the wp_nav_menu function. */ public static function fallback( $args ) { if ( current_user_can( 'edit_theme_options' ) ) { /* Get Arguments. */ $container = $args['container']; $container_id = $args['container_id']; $container_class = $args['container_class']; $menu_class = $args['menu_class']; $menu_id = $args['menu_id']; if ( $container ) { echo '<' . esc_attr( $container ); if ( $container_id ) { echo ' id="' . esc_attr( $container_id ) . '"'; } if ( $container_class ) { echo ' class="' . sanitize_html_class( $container_class ) . '"'; } echo '>'; } echo ''; echo '

' . esc_attr( 'Add a menu', '' ) . '

'; echo ''; if ( $container ) { echo ''; } } } } } // End if().