'; } } add_action( 'wp_head', 'twentynineteen_pingback_header' ); /** * Changes comment form default fields. */ function twentynineteen_comment_form_defaults( $defaults ) { $comment_field = $defaults['comment_field']; // Adjust height of comment form. $defaults['comment_field'] = preg_replace( '/rows="\d+"/', 'rows="5"', $comment_field ); return $defaults; } add_filter( 'comment_form_defaults', 'twentynineteen_comment_form_defaults' ); /** * Filters the default archive titles. */ function twentynineteen_get_the_archive_title() { if ( is_category() ) { $title = __( 'Category Archives: ', 'twentynineteen' ) . '' . single_term_title( '', false ) . ''; } elseif ( is_tag() ) { $title = __( 'Tag Archives: ', 'twentynineteen' ) . '' . single_term_title( '', false ) . ''; } elseif ( is_author() ) { $title = __( 'Author Archives: ', 'twentynineteen' ) . '' . get_the_author_meta( 'display_name' ) . ''; } elseif ( is_year() ) { $title = __( 'Yearly Archives: ', 'twentynineteen' ) . '' . get_the_date( _x( 'Y', 'yearly archives date format', 'twentynineteen' ) ) . ''; } elseif ( is_month() ) { $title = __( 'Monthly Archives: ', 'twentynineteen' ) . '' . get_the_date( _x( 'F Y', 'monthly archives date format', 'twentynineteen' ) ) . ''; } elseif ( is_day() ) { $title = __( 'Daily Archives: ', 'twentynineteen' ) . '' . get_the_date() . ''; } elseif ( is_post_type_archive() ) { $title = __( 'Post Type Archives: ', 'twentynineteen' ) . '' . post_type_archive_title( '', false ) . ''; } elseif ( is_tax() ) { $tax = get_taxonomy( get_queried_object()->taxonomy ); /* translators: %s: Taxonomy singular name. */ $title = sprintf( esc_html__( '%s Archives:', 'twentynineteen' ), $tax->labels->singular_name ); } else { $title = __( 'Archives:', 'twentynineteen' ); } return $title; } add_filter( 'get_the_archive_title', 'twentynineteen_get_the_archive_title' ); /** * Adds custom 'sizes' attribute to responsive image functionality for post thumbnails. * * @origin Twenty Nineteen 1.0 * * @param string[] $attr Array of attribute values for the image markup, keyed by attribute name. * See wp_get_attachment_image(). * @return string[] The filtered attributes for the image markup. */ function twentynineteen_post_thumbnail_sizes_attr( $attr ) { if ( is_admin() ) { return $attr; } if ( ! is_singular() ) { $attr['sizes'] = '(max-width: 34.9rem) calc(100vw - 2rem), (max-width: 53rem) calc(8 * (100vw / 12)), (min-width: 53rem) calc(6 * (100vw / 12)), 100vw'; } return $attr; } add_filter( 'wp_get_attachment_image_attributes', 'twentynineteen_post_thumbnail_sizes_attr' ); /** * Adds an extra menu to our nav for our priority+ navigation to use. * * @param string $nav_menu Nav menu. * @param object $args Nav menu args. * @return string More link for hidden menu items. */ function twentynineteen_add_ellipses_to_nav( $nav_menu, $args ) { if ( 'menu-1' === $args->theme_location ) : $nav_menu .= ' '; endif; return $nav_menu; } add_filter( 'wp_nav_menu', 'twentynineteen_add_ellipses_to_nav', 10, 2 ); /** * Handles WCAG 2.0 attributes for dropdown menus. * * Adjustments to menu attributes to support WCAG 2.0 recommendations * for flyout and dropdown menus. * * @ref https://www.w3.org/WAI/tutorials/menus/flyout/ * @param array $atts { * The HTML attributes applied to the menu item's `` element, empty strings are ignored. * * @type string $title Title attribute. * @type string $target Target attribute. * @type string $rel The rel attribute. * @type string $href The href attribute. * @type string $aria-current The aria-current attribute. * } * @param WP_Post $item The current menu item object. * @return string[] Modified attributes. */ function twentynineteen_nav_menu_link_attributes( $atts, $item ) { // Add [aria-haspopup] and [aria-expanded] to menu items that have children. $item_has_children = in_array( 'menu-item-has-children', $item->classes, true ); if ( $item_has_children ) { $atts['aria-haspopup'] = 'true'; $atts['aria-expanded'] = 'false'; } return $atts; } add_filter( 'nav_menu_link_attributes', 'twentynineteen_nav_menu_link_attributes', 10, 2 ); /** * Creates a nav menu item to be displayed on mobile to navigate from submenu back to the parent. * * This duplicates each parent nav menu item and makes it the first child of itself. * * @param array $sorted_menu_items Sorted nav menu items. * @param object $args Nav menu args. * @return array Amended nav menu items. */ function twentynineteen_add_mobile_parent_nav_menu_items( $sorted_menu_items, $args ) { static $pseudo_id = 0; if ( ! isset( $args->theme_location ) || 'menu-1' !== $args->theme_location ) { return $sorted_menu_items; } $amended_menu_items = array(); foreach ( $sorted_menu_items as $nav_menu_item ) { $amended_menu_items[] = $nav_menu_item; if ( in_array( 'menu-item-has-children', $nav_menu_item->classes, true ) ) { $parent_menu_item = clone $nav_menu_item; $parent_menu_item->original_id = $nav_menu_item->ID; $parent_menu_item->ID = --$pseudo_id; $parent_menu_item->db_id = $parent_menu_item->ID; $parent_menu_item->object_id = $parent_menu_item->ID; $parent_menu_item->classes = array( 'mobile-parent-nav-menu-item' ); $parent_menu_item->menu_item_parent = $nav_menu_item->ID; $amended_menu_items[] = $parent_menu_item; } } return $amended_menu_items; } add_filter( 'wp_nav_menu_objects', 'twentynineteen_add_mobile_parent_nav_menu_items', 10, 2 ); /** * Adds a fragment identifier (to the content) to paginated links. * * @since Twenty Nineteen 2.6 * * @param string $link The page number HTML output. * @param int $i Page number for paginated posts' page links. * @return string Formatted output in HTML. */ function twentynineteen_link_pages_link( $link, $i ) { if ( $i > 1 && preg_match( '/href="([^"]*)"/', $link, $matches ) ) { $link = str_replace( $matches[1], $matches[1] . '#content', $link ); } return $link; } add_filter( 'wp_link_pages_link', 'twentynineteen_link_pages_link', 10, 2 );