name : menu-functions.php <?php /** * Functions and filters related to the menus. * * Makes the default WordPress navigation use an HTML structure similar * to the Navigation block. * * @link https://make.wordpress.org/themes/2020/07/06/printing-navigation-block-html-from-a-legacy-menu-in-themes/ * * @package WordPress * @subpackage Twenty_Twenty_One * @since Twenty Twenty-One 1.0 */ /** * Add a button to top-level menu items that has sub-menus. * An icon is added using CSS depending on the value of aria-expanded. * * @since Twenty Twenty-One 1.0 * * @param string $output Nav menu item start element. * @param object $item Nav menu item. * @param int $depth Depth. * @param object $args Nav menu args. * @return string Nav menu item start element. */ function twenty_twenty_one_add_sub_menu_toggle( $output, $item, $depth, $args ) { if ( 'primary' === $args->theme_location && 0 === $depth && in_array( 'menu-item-has-children', $item->classes, true ) ) { // Add toggle button. $output .= '<button class="sub-menu-toggle" aria-expanded="false" onClick="twentytwentyoneExpandSubMenu(this)">'; $output .= '<span class="icon-plus">' . twenty_twenty_one_get_icon_svg( 'ui', 'plus', 18 ) . '</span>'; $output .= '<span class="icon-minus">' . twenty_twenty_one_get_icon_svg( 'ui', 'minus', 18 ) . '</span>'; /* translators: Hidden accessibility text. */ $output .= '<span class="screen-reader-text">' . esc_html__( 'Open menu', 'twentytwentyone' ) . '</span>'; $output .= '</button>'; } return $output; } add_filter( 'walker_nav_menu_start_el', 'twenty_twenty_one_add_sub_menu_toggle', 10, 4 ); /** * Detects the social network from a URL and returns the SVG code for its icon. * * @since Twenty Twenty-One 1.0 * * @param string $uri Social link. * @param int $size The icon size in pixels. * @return string */ function twenty_twenty_one_get_social_link_svg( $uri, $size = 24 ) { return Twenty_Twenty_One_SVG_Icons::get_social_link_svg( $uri, $size ); } /** * Displays SVG icons in the footer navigation. * * @since Twenty Twenty-One 1.0 * * @param string $item_output The menu item's starting HTML output. * @param WP_Post $item Menu item data object. * @param int $depth Depth of the menu. Used for padding. * @param stdClass $args An object of wp_nav_menu() arguments. * @return string The menu item output with social icon. */ function twenty_twenty_one_nav_menu_social_icons( $item_output, $item, $depth, $args ) { // Change SVG icon inside social links menu if there is supported URL. if ( 'footer' === $args->theme_location ) { $svg = twenty_twenty_one_get_social_link_svg( $item->url, 24 ); if ( ! empty( $svg ) ) { $item_output = str_replace( $args->link_before, $svg, $item_output ); } } return $item_output; } add_filter( 'walker_nav_menu_start_el', 'twenty_twenty_one_nav_menu_social_icons', 10, 4 ); /** * Filters the arguments for a single nav menu item. * * @since Twenty Twenty-One 1.0 * * @param stdClass $args An object of wp_nav_menu() arguments. * @param WP_Post $item Menu item data object. * @param int $depth Depth of menu item. Used for padding. * @return stdClass */ function twenty_twenty_one_add_menu_description_args( $args, $item, $depth ) { if ( '</span>' !== $args->link_after ) { $args->link_after = ''; } if ( 0 === $depth && isset( $item->description ) && $item->description ) { // The extra <span> element is here for styling purposes: Allows the description to not be underlined on hover. $args->link_after = '<p class="menu-item-description"><span>' . $item->description . '</span></p>'; } return $args; } add_filter( 'nav_menu_item_args', 'twenty_twenty_one_add_menu_description_args', 10, 3 );