wordpress-theme-cbsonline/functions.php

<?php

defined('ABSPATH') || exit();

// enable auto update
add_filter('allow_major_auto_core_updates', '__return_true');
add_filter('allow_minor_auto_core_updates', '__return_true');
add_filter('auto_update_theme', '__return_true');
add_filter('auto_update_plugin', '__return_true');

// remove parent theme defined filters and actions
add_action('after_setup_theme', 'cbsonline_disable_parent_defines');
function cbsonline_disable_parent_defines() {
    // remove 'ico - image/x-icon' mime support
    remove_filter('upload_mimes', 'biz_vektor_mine_types');
    // remove web fonts
    remove_action('wp_enqueue_scripts','biz_vektor_addWebFonts');
    // remove buggy biz_vector script
    remove_action('wp_head','biz_vektor_addJScripts');
}

// disable emoji
remove_action('wp_head', 'print_emoji_detection_script', 7);
remove_action('admin_print_scripts', 'print_emoji_detection_script');
remove_action('wp_print_styles', 'print_emoji_styles');
remove_action('admin_print_styles', 'print_emoji_styles');
remove_filter('the_content_feed', 'wp_staticize_emoji');
remove_filter('comment_text_rss', 'wp_staticize_emoji');
remove_filter('wp_mail', 'wp_staticize_emoji_for_email');
// add_filter('tiny_mce_plugins', 'disable_emojis_tinymce');

// remove unnecessary head tags
// - rest
remove_action('wp_head','rest_output_link_wp_head');
// - embed
remove_action('wp_head','wp_oembed_add_discovery_links');
remove_action('wp_head','wp_oembed_add_host_js');
// - feed
remove_action('wp_head','feed_links', 2);
remove_action('wp_head','feed_links_extra', 3);
// - rsd
remove_action('wp_head','rsd_link');
// - windows live writer
remove_action('wp_head','wlwmanifest_link');
// - generator
remove_action('wp_head','wp_generator');
// - shortlink
remove_action('wp_head','wp_shortlink_wp_head');
// - rel link
remove_action('wp_head','index_rel_link');
remove_action('wp_head','parent_post_rel_link', 10);
remove_action('wp_head','start_post_rel_link', 10);
remove_action('wp_head','adjacent_posts_rel_link_wp_head');

// disable automatically appending srcset attribute in img tag
add_filter('wp_calculate_image_srcset_meta', '__return_null');

// disable DNS prefetch
add_filter('wp_resource_hints', 'cbsonline_remove_dns_prefetch', 10, 2);
function cbsonline_remove_dns_prefetch( $hints, $relation_type ) {
    if ( 'dns-prefetch' === $relation_type ) {
        return array_diff( wp_dependencies_unique_hosts(), $hints );
    }
    return $hints;
}

// add styles
add_action('wp_enqueue_scripts', 'cbsonline_add_styles');
function cbsonline_add_styles() {
    wp_enqueue_style('parent-style', get_template_directory_uri().'/style.css');
    wp_enqueue_style('dashicons');
}

// add scripts
add_action('wp_head', 'cbsonline_add_scripts');
function cbsonline_add_scripts() {
    wp_register_script('biz-vektor-fix-min-js', get_stylesheet_directory_uri().'/js/biz-vektor-fix-min.js', ['jquery'], '20201029');
    wp_enqueue_script('biz-vektor-fix-min-js');
}

// add widgets
function cbsonline_widgets_init() {
	register_sidebar( array(
		'name' => 'ヘッダー ウィジェット',
		'id' => 'header-widget-area',
		'before_widget' => '<div class="header-widget-area">',
		'after_widget' => '</div>',
		'before_title' => '<h2 class="rounded">',
		'after_title' => '</h2>',
	) );

	register_sidebar( array(
		'name' => 'トップバナー ウィジェット',
		'id' => 'topbnr-widget-area',
		'before_widget' => '<div class="topbnr-widget-area clearfix"><div class="topbnr-widget-area-inner clearfix">',
		'after_widget' => '</div></div>',
		'before_title' => '<h2 class="rounded">',
		'after_title' => '</h2>',
	) );
	
	register_sidebar( array(
		'name' => 'トップイメージ ウィジェット',
		'id' => 'topimg-widget-area',
		'before_widget' => '<div class="topimg-widget-area clearfix">',
		'after_widget' => '</div>',
		'before_title' => '<h2 class="rounded">',
		'after_title' => '</h2>',
	) );
	
}
add_action('widgets_init', 'cbsonline_widgets_init');

// tweak bogo plugin
// - disable flags
add_filter( 'bogo_use_flags','bogo_use_flags_false');
function bogo_use_flags_false() {
    return false;
}
// - remove ' (United States)' strings from en_US language
add_filter( 'bogo_language_switcher','replace_bogo_text');
function replace_bogo_text($output) {
   return str_replace(' (United States)', '', $output);
}

// add short code
// - topbox : http://www.webopixel.net/wordpress/53.html
function cbsonline_shortcode_TopBox( $atts, $content = null ) {
	$content = do_shortcode(shortcode_unautop($content));
    extract(shortcode_atts(['class' => 'default'], $atts));
     
    return '<div class="topbox">'.$content.'</div>';
}
add_shortcode('topbox', 'cbsonline_shortcode_TopBox');

// allow illustrator file upload
function cbsonline_allow_upload_ai($mimes) {
    $mimes['ai'] = 'image/x-illustrator'; 
    return $mimes;
}
add_filter('upload_mimes', 'cbsonline_allow_upload_ai');

// force override Archive widget arguments
add_filter( 'widget_archives_args', 'cbsonline_widget_archives_args' );
function cbsonline_widget_archives_args( $args ) {
    // yearly    
    $args['type'] = 'yearly';
    // maximum number of items : 10 years
    $args['limit'] = 10;
    
    return $args;
}

// support category based archives
add_filter('getarchives_join', 'cbsonline_category_getarchives_join', 10, 2);
function cbsonline_category_getarchives_join($join, $r) {
    global $wpdb;
    if (is_category()) {
        $cat = intval(get_query_var('cat'));
        if ($cat > 0) {
            return
              " LEFT JOIN $wpdb->term_relationships as r ON $wpdb->posts.ID = r.object_ID
                LEFT JOIN $wpdb->term_taxonomy as t ON r.term_taxonomy_id = t.term_taxonomy_id
                LEFT JOIN $wpdb->terms as terms ON t.term_id = terms.term_id";
        }
    }
}
add_filter('getarchives_where', 'cbsonline_category_getarchives_where', 10, 2);
function cbsonline_category_getarchives_where($where, $r) {
    if (is_category()) {
        $cat = intval(get_query_var('cat'));
        if ($cat > 0) {
            return $where." AND t.taxonomy = 'category' AND terms.term_id = $cat";
        }
    }
}
add_filter('year_link', 'cbsonline_category_year_link', 10, 2);
function cbsonline_category_year_link($url, $year){
    global $wp_rewrite;
    if (is_category()) {
        $cat = intval(get_query_var('cat'));
        if ($cat > 0) {
            $url .= '?cat='.get_query_var('cat');
        }
    }
    return $url;
}