'menu_item_parent', 'id' => 'db_id', ); private $privacy_policy_url; public function __construct() { $this->privacy_policy_url = get_privacy_policy_url(); } public function start_lvl( &$output, $depth = 0, $args = null ) { if ( isset( $args->item_spacing ) && 'discard' === $args->item_spacing ) { $t = ''; $n = ''; } else { $t = "\t"; $n = "\n"; } $indent = str_repeat( $t, $depth ); // Default class. $classes = array( 'sub-menu' ); $class_names = implode( ' ', apply_filters( 'nav_menu_submenu_css_class', $classes, $args, $depth ) ); $atts = array(); $atts['class'] = ! empty( $class_names ) ? $class_names : ''; $atts = apply_filters( 'nav_menu_submenu_attributes', $atts, $args, $depth ); $attributes = $this->build_atts( $atts ); $output .= "{$n}{$indent}{$n}"; } public function end_lvl( &$output, $depth = 0, $args = null ) { if ( isset( $args->item_spacing ) && 'discard' === $args->item_spacing ) { $t = ''; $n = ''; } else { $t = "\t"; $n = "\n"; } $indent = str_repeat( $t, $depth ); $output .= "$indent{$n}"; } public function start_el( &$output, $data_object, $depth = 0, $args = null, $current_object_id = 0 ) { // Restores the more descriptive, specific name for use within this method. $menu_item = $data_object; if ( isset( $args->item_spacing ) && 'discard' === $args->item_spacing ) { $t = ''; $n = ''; } else { $t = "\t"; $n = "\n"; } $indent = ( $depth ) ? str_repeat( $t, $depth ) : ''; $classes = empty( $menu_item->classes ) ? array() : (array) $menu_item->classes; $classes[] = 'menu-item-' . $menu_item->ID; $args = apply_filters( 'nav_menu_item_args', $args, $menu_item, $depth ); $class_names = implode( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $menu_item, $args, $depth ) ); $id = apply_filters( 'nav_menu_item_id', 'menu-item-' . $menu_item->ID, $menu_item, $args, $depth ); $li_atts = array(); $li_atts['id'] = ! empty( $id ) ? $id : ''; $li_atts['class'] = ! empty( $class_names ) ? $class_names : ''; $li_atts = apply_filters( 'nav_menu_item_attributes', $li_atts, $menu_item, $args, $depth ); $li_attributes = $this->build_atts( $li_atts ); $output .= $indent . ''; $title = apply_filters( 'the_title', $menu_item->title, $menu_item->ID ); // Save filtered value before filtering again. $the_title_filtered = $title; $title = apply_filters( 'nav_menu_item_title', $title, $menu_item, $args, $depth ); $atts = array(); $atts['target'] = ! empty( $menu_item->target ) ? $menu_item->target : ''; $atts['rel'] = ! empty( $menu_item->xfn ) ? $menu_item->xfn : ''; if ( ! empty( $menu_item->url ) ) { if ( $this->privacy_policy_url === $menu_item->url ) { $atts['rel'] = empty( $atts['rel'] ) ? 'privacy-policy' : $atts['rel'] . ' privacy-policy'; } $atts['href'] = $menu_item->url; } else { $atts['href'] = ''; } $atts['aria-current'] = $menu_item->current ? 'page' : ''; // Add title attribute only if it does not match the link text (before or after filtering). if ( ! empty( $menu_item->attr_title ) && trim( strtolower( $menu_item->attr_title ) ) !== trim( strtolower( $menu_item->title ) ) && trim( strtolower( $menu_item->attr_title ) ) !== trim( strtolower( $the_title_filtered ) ) && trim( strtolower( $menu_item->attr_title ) ) !== trim( strtolower( $title ) ) ) { $atts['title'] = $menu_item->attr_title; } else { $atts['title'] = ''; } $atts = apply_filters( 'nav_menu_link_attributes', $atts, $menu_item, $args, $depth ); $attributes = $this->build_atts( $atts ); $item_output = $args->before; $item_output .= ''; $item_output .= $args->link_before . $title . $args->link_after; $item_output .= ''; $item_output .= $args->after; $output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $menu_item, $depth, $args ); } public function end_el( &$output, $data_object, $depth = 0, $args = null ) { if ( isset( $args->item_spacing ) && 'discard' === $args->item_spacing ) { $t = ''; $n = ''; } else { $t = "\t"; $n = "\n"; } $output .= "{$n}"; } protected function build_atts( $atts = array() ) { $attribute_string = ''; foreach ( $atts as $attr => $value ) { if ( false !== $value && '' !== $value && is_scalar( $value ) ) { $value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value ); $attribute_string .= ' ' . $attr . '="' . $value . '"'; } } return $attribute_string; } }