299 lines
9.3 KiB
PHP
Executable file
299 lines
9.3 KiB
PHP
Executable file
<?php
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/**
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* Functions which enhance the theme by hooking into WordPress
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*
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* @package WordPress
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* @subpackage Varia
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* @since 1.0.0
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*/
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/**
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* Remove Gutenberg Block Styles
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* - We could end up keeping these, but for now these styles
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* should live in `_block-utilities.scss` where we can make
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* them simpler and more block-agnostic.
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*/
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function wps_deregister_styles() {
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wp_dequeue_style( 'wp-block-library' );
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wp_dequeue_style( 'wp-block-library-theme' );
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}
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//add_action( 'wp_print_styles', 'wps_deregister_styles', 100 );
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/**
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* Adds custom classes to the array of body classes.
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*
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* @param array $classes Classes for the body element.
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* @return array
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*/
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function varia_body_classes( $classes ) {
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if ( is_singular() ) {
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// Adds `singular` to singular pages.
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$classes[] = 'singular';
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} else {
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// Adds `hfeed` to non singular pages.
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$classes[] = 'hfeed';
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}
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// Adds a class if image filters are enabled.
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if ( varia_image_filters_enabled() ) {
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$classes[] = 'image-filters-enabled';
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}
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// Add a body class if the site header is hidden on the homepage.
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$hide_site_header = get_theme_mod( 'hide_site_header', false );
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if ( true === $hide_site_header && is_front_page() && is_page() ) {
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$classes[] = 'hide-homepage-header';
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}
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// Add a body class if the footer elements are hidden on the homepage.
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$hide_site_footer = get_theme_mod( 'hide_site_footer', false );
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if ( true === $hide_site_footer && is_front_page() && is_page() ) {
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$classes[] = 'hide-homepage-footer';
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}
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return $classes;
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}
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add_filter( 'body_class', 'varia_body_classes' );
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/**
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* Adds custom class to the array of posts classes.
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*/
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function varia_post_classes( $classes, $class, $post_id ) {
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$classes[] = 'entry';
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return $classes;
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}
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add_filter( 'post_class', 'varia_post_classes', 10, 3 );
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/**
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* Add a pingback url auto-discovery header for single posts, pages, or attachments.
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*/
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function varia_pingback_header() {
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if ( is_singular() && pings_open() ) {
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echo '<link rel="pingback" href="', esc_url( get_bloginfo( 'pingback_url' ) ), '">';
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}
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}
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add_action( 'wp_head', 'varia_pingback_header' );
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/**
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* Changes comment form default fields.
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*/
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function varia_comment_form_defaults( $defaults ) {
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$comment_field = $defaults['comment_field'];
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// Adjust height of comment form.
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$defaults['comment_field'] = preg_replace( '/rows="\d+"/', 'rows="5"', $comment_field );
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return $defaults;
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}
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add_filter( 'comment_form_defaults', 'varia_comment_form_defaults' );
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/**
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* Filters the default archive titles.
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*/
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function varia_get_the_archive_title() {
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if ( is_category() ) {
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$title = __( 'Category Archives: ', 'varia' ) . '<span class="page-description">' . single_term_title( '', false ) . '</span>';
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} elseif ( is_tag() ) {
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$title = __( 'Tag Archives: ', 'varia' ) . '<span class="page-description">' . single_term_title( '', false ) . '</span>';
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} elseif ( is_author() ) {
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$title = __( 'Author Archives: ', 'varia' ) . '<span class="page-description">' . get_the_author_meta( 'display_name' ) . '</span>';
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} elseif ( is_year() ) {
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$title = __( 'Yearly Archives: ', 'varia' ) . '<span class="page-description">' . get_the_date( _x( 'Y', 'yearly archives date format', 'varia' ) ) . '</span>';
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} elseif ( is_month() ) {
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$title = __( 'Monthly Archives: ', 'varia' ) . '<span class="page-description">' . get_the_date( _x( 'F Y', 'monthly archives date format', 'varia' ) ) . '</span>';
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} elseif ( is_day() ) {
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$title = __( 'Daily Archives: ', 'varia' ) . '<span class="page-description">' . get_the_date() . '</span>';
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} elseif ( is_post_type_archive() ) {
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$cpt = get_post_type_object( get_queried_object()->name );
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/* translators: %s: Post type singular name */
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$title = sprintf( esc_html__( '%s Archives', 'varia' ),
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$cpt->labels->singular_name
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);
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} elseif ( is_tax() ) {
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$tax = get_taxonomy( get_queried_object()->taxonomy );
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/* translators: %s: Taxonomy singular name */
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$title = sprintf( esc_html__( '%s Archives', 'varia' ),
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$tax->labels->singular_name
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);
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} else {
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$title = __( 'Archives:', 'varia' );
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}
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return $title;
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}
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add_filter( 'get_the_archive_title', 'varia_get_the_archive_title' );
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/**
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* Determines if post thumbnail can be displayed.
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*/
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function varia_can_show_post_thumbnail() {
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return apply_filters( 'varia_can_show_post_thumbnail', ! post_password_required() && ! is_attachment() && has_post_thumbnail() );
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}
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/**
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* Returns true if image filters are enabled on the theme options.
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*/
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function varia_image_filters_enabled() {
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return 0 !== get_theme_mod( 'image_filter', 1 );
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}
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/**
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* Returns the size for avatars used in the theme.
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*/
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function varia_get_avatar_size() {
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return 60;
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}
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/**
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* Returns true if comment is by author of the post.
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*
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* @see get_comment_class()
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*/
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function varia_is_comment_by_post_author( $comment = null ) {
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if ( is_object( $comment ) && $comment->user_id > 0 ) {
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$user = get_userdata( $comment->user_id );
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$post = get_post( $comment->comment_post_ID );
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if ( ! empty( $user ) && ! empty( $post ) ) {
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return $comment->user_id === $post->post_author;
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}
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}
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return false;
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}
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/**
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* WCAG 2.0 Attributes for Dropdown Menus
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*
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* Adjustments to menu attributes tot support WCAG 2.0 recommendations
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* for flyout and dropdown menus.
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*
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* @ref https://www.w3.org/WAI/tutorials/menus/flyout/
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*/
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function varia_nav_menu_link_attributes( $atts, $item, $args, $depth ) {
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// Add [aria-haspopup] and [aria-expanded] to menu items that have children
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$item_has_children = in_array( 'menu-item-has-children', $item->classes );
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if ( $item_has_children ) {
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$atts['aria-haspopup'] = 'true';
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$atts['aria-expanded'] = 'false';
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}
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return $atts;
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}
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add_filter( 'nav_menu_link_attributes', 'varia_nav_menu_link_attributes', 10, 4 );
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/*
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* Create the continue reading link
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*/
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function varia_continue_reading_link() {
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if ( ! is_admin() ) {
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$continue_reading = sprintf(
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/* translators: %s: Name of current post. */
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wp_kses( __( 'Continue reading %s', 'varia' ), array( 'span' => array( 'class' => array() ) ) ),
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the_title( '<span class="screen-reader-text">"', '"</span>', false )
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);
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return '<a class="more-link" href="' . esc_url( get_permalink() ) . '">' . $continue_reading . '</a>';
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}
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}
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// Filter the excerpt more link
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add_filter( 'excerpt_more', 'varia_continue_reading_link' );
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// Filter the content more link
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add_filter( 'the_content_more_link', 'varia_continue_reading_link' );
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/**
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* Add a dropdown icon to top-level menu items.
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*
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* @param string $output Nav menu item start element.
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* @param object $item Nav menu item.
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* @param int $depth Depth.
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* @param object $args Nav menu args.
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* @return string Nav menu item start element.
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* Add a dropdown icon to top-level menu items
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*/
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function varia_add_dropdown_icons( $output, $item, $depth, $args ) {
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// Only add class to 'top level' items on the 'primary' menu.
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if ( ! isset( $args->theme_location ) || 'menu-1' !== $args->theme_location ) {
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return $output;
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}
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if ( in_array( 'mobile-parent-nav-menu-item', $item->classes, true ) && isset( $item->original_id ) ) {
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// Inject the keyboard_arrow_left SVG inside the parent nav menu item, and let the item link to the parent item.
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// @todo Only do this for nested submenus? If on a first-level submenu, then really the link could be "#" since the desire is to remove the target entirely.
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$link = sprintf(
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'<button class="menu-item-link-return" tabindex="-1">%s',
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varia_get_icon_svg( 'chevron_left', 24 )
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);
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// replace opening <a> with <button>
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$output = preg_replace(
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'/<a\s.*?>/',
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$link,
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$output,
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1 // Limit.
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);
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// replace closing </a> with </button>
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$output = preg_replace(
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'#</a>#i',
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'</button>',
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$output,
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1 // Limit.
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);
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} elseif ( in_array( 'menu-item-has-children', $item->classes, true ) ) {
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// Add SVG icon to parent items.
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$icon = varia_get_icon_svg( 'keyboard_arrow_down', 24 );
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$output .= sprintf(
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'<button class="submenu-expand" tabindex="-1">%s</button>',
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$icon
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);
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}
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return $output;
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}
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// add_filter( 'walker_nav_menu_start_el', 'varia_add_dropdown_icons', 10, 4 );
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/**
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* Create a nav menu item to be displayed on mobile to navigate from submenu back to the parent.
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*
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* This duplicates each parent nav menu item and makes it the first child of itself.
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*
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* @param array $sorted_menu_items Sorted nav menu items.
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* @param object $args Nav menu args.
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* @return array Amended nav menu items.
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*/
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function varia_add_mobile_parent_nav_menu_items( $sorted_menu_items, $args ) {
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static $pseudo_id = 0;
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if ( ! isset( $args->theme_location ) || 'menu-1' !== $args->theme_location ) {
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return $sorted_menu_items;
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}
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$amended_menu_items = array();
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foreach ( $sorted_menu_items as $nav_menu_item ) {
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$amended_menu_items[] = $nav_menu_item;
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if ( in_array( 'menu-item-has-children', $nav_menu_item->classes, true ) ) {
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$parent_menu_item = clone $nav_menu_item;
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$parent_menu_item->original_id = $nav_menu_item->ID;
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$parent_menu_item->ID = --$pseudo_id;
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$parent_menu_item->db_id = $parent_menu_item->ID;
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$parent_menu_item->object_id = $parent_menu_item->ID;
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$parent_menu_item->classes = array( 'mobile-parent-nav-menu-item' );
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$parent_menu_item->menu_item_parent = $nav_menu_item->ID;
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$amended_menu_items[] = $parent_menu_item;
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}
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}
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return $amended_menu_items;
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}
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// add_filter( 'wp_nav_menu_objects', 'varia_add_mobile_parent_nav_menu_items', 10, 2 );
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