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<?php defined( 'ABSPATH' ) || exit; if ( ! class_exists( 'Medizin_Nav_Menu_Item' ) ) { class Medizin_Nav_Menu_Item { protected static $instance = null; const MENU_ITEM_ICON_CLASS = '_menu_item_icon_class'; public static function instance() { if ( null === self::$instance ) { self::$instance = new self(); } return self::$instance; } function initialize() { add_action( 'wp_nav_menu_item_custom_fields', [ $this, 'add_fields_to_nav_menu' ], 10, 5 ); add_action( 'wp_update_nav_menu_item', [ $this, 'update_nav_menu_item' ], 10, 3 ); add_filter( 'wp_setup_nav_menu_item', [ $this, 'setup_nav_menu_item' ] ); } /** * Add input field to add icon class. * * @param int $item_id the menu item ID * @param WP_Post $item Menu item data object. * @param int $depth Depth of menu item. Used for padding. * @param stdClass $args An object of menu item arguments. * @param int $id the Navigation Menu ID */ public function add_fields_to_nav_menu( $item_id, $item, $depth, $args, $id ) { ?> <p class="field-icon-class description description-thin"> <label for="edit-menu-item-icon-class-<?php echo esc_attr( $item_id ); ?>"> <?php esc_html_e( 'Icon Class (optional)', 'medizin' ); ?><br/> <input type="text" id="edit-menu-item-icon-class-<?php echo esc_attr( $item_id ); ?>" class="widefat code edit-menu-item-icon-class" name="menu-item-icon-class[<?php echo esc_attr( $item_id ); ?>]" value="<?php echo esc_attr( $item->icon_class ); ?>"/> </label> </p> <?php } public function update_nav_menu_item( $menu_id, $menu_item_db_id, $args ) { if ( isset( $_REQUEST['menu-item-icon-class'] ) && is_array( $_REQUEST['menu-item-icon-class'] ) ) { if ( isset( $_REQUEST['menu-item-icon-class'][ $menu_item_db_id ] ) ) { $new_value = $_REQUEST['menu-item-icon-class'][ $menu_item_db_id ]; update_post_meta( $menu_item_db_id, self::MENU_ITEM_ICON_CLASS, $new_value ); } } else { update_post_meta( $menu_item_db_id, self::MENU_ITEM_ICON_CLASS, '' ); } } public function setup_nav_menu_item( $menu_item ) { $icon_class = get_post_meta( $menu_item->ID, self::MENU_ITEM_ICON_CLASS, true ); if ( empty( $icon_class ) ) { $icon_class = ''; } $menu_item->icon_class = $icon_class; return $menu_item; } } Medizin_Nav_Menu_Item::instance()->initialize(); }
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