scratchstart-theme/functions.php at main · dennismenken/scratchstart-theme · GitHub

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<?php
/**
 * ScratchStart Theme bootstrap.
 *
 * Intentionally free of custom CSS and JavaScript so page builders such as
 * Elementor stay in full control and the frontend stays lightning fast.
 */

defined('ABSPATH') || exit;

add_action('after_setup_theme', 'scratchstart_setup');
function scratchstart_setup(): void
{
    load_theme_textdomain('scratchstart', get_template_directory() . '/languages');

    add_theme_support('title-tag');
    add_theme_support('post-thumbnails');
    add_theme_support('automatic-feed-links');
    add_theme_support('responsive-embeds');
    add_theme_support('html5', array(
        'search-form',
        'comment-form',
        'comment-list',
        'gallery',
        'caption',
        'style',
        'script',
    ));

    register_nav_menus(array(
        'header-menu' => __('Header Menu', 'scratchstart'),
        'footer-menu' => __('Footer Menu', 'scratchstart'),
    ));
}

/**
 * Decide whether a theme-rendered part should be emitted at all.
 *
 * The theme is page-builder-first (Elementor, Bricks, Beaver, ...) and ships
 * thinner than Hello: by default it renders nothing besides the document
 * skeleton (DOCTYPE, <head>, body with wp_head / wp_body_open / wp_footer)
 * and a single <main id="main"> wrapper that holds the_content(). Every
 * piece of chrome and even the archive loop and comments are opt-in.
 * There is no 404.php on purpose: WordPress falls back to index.php so a
 * page builder's "Not Found" template can take over via template_include.
 *
 * Enable parts you actually need from your child theme or a mu-plugin:
 *
 *     add_filter('scratchstart_render_skip_link',    '__return_true');
 *     add_filter('scratchstart_render_header',       '__return_true');
 *     add_filter('scratchstart_render_footer',       '__return_true');
 *     add_filter('scratchstart_render_post_title',   '__return_true');
 *     add_filter('scratchstart_render_post_meta',    '__return_true');
 *     add_filter('scratchstart_render_comments',     '__return_true');
 *     add_filter('scratchstart_render_sidebar',      '__return_true');
 *     add_filter('scratchstart_render_archive_loop', '__return_true');
 */
function scratchstart_should_render(string $part): bool
{
    return (bool) apply_filters("scratchstart_render_{$part}", false);
}

add_action('widgets_init', 'scratchstart_widgets_init');
function scratchstart_widgets_init(): void
{
    register_sidebar(array(
        'name'          => __('Main Sidebar', 'scratchstart'),
        'id'            => 'main-sidebar',
        'description'   => __('Widgets in this area will be shown on all posts and pages.', 'scratchstart'),
        'before_widget' => '<div id="%1$s" class="widget %2$s">',
        'after_widget'  => '</div>',
        'before_title'  => '<h2 class="widgettitle">',
        'after_title'   => '</h2>',
    ));
}

/**
 * Optional WordPress core cleanup, all opt-in.
 *
 * Defaults to no interference with WordPress core. Enable any subset to
 * shrink the rendered <head>/<body> when a page builder owns the layout:
 *
 *     add_filter('scratchstart_disable_emojis',            '__return_true');
 *     add_filter('scratchstart_disable_embed_script',      '__return_true');
 *     add_filter('scratchstart_disable_block_library_css', '__return_true');
 *     add_filter('scratchstart_clean_head',                '__return_true');
 *
 * Or flip them all at once with the master switch:
 *
 *     add_filter('scratchstart_lightning_mode', '__return_true');
 */
add_action('init', 'scratchstart_apply_core_cleanup');
function scratchstart_apply_core_cleanup(): void
{
    $lightning = (bool) apply_filters('scratchstart_lightning_mode', false);

    if ($lightning || apply_filters('scratchstart_disable_emojis', false)) {
        remove_action('wp_head', 'print_emoji_detection_script', 7);
        remove_action('wp_print_styles', 'print_emoji_styles');
        remove_action('admin_print_scripts', 'print_emoji_detection_script');
        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('emoji_svg_url', '__return_false');
        add_filter('tiny_mce_plugins', static function (array $plugins): array {
            return array_values(array_diff($plugins, array('wpemoji')));
        });
    }

    if ($lightning || apply_filters('scratchstart_disable_embed_script', false)) {
        add_action('wp_footer', static function (): void {
            wp_dequeue_script('wp-embed');
        });
    }

    if ($lightning || apply_filters('scratchstart_disable_block_library_css', false)) {
        add_action('wp_enqueue_scripts', static function (): void {
            wp_dequeue_style('wp-block-library');
            wp_dequeue_style('wp-block-library-theme');
            wp_dequeue_style('global-styles');
            wp_dequeue_style('classic-theme-styles');
        }, 100);
    }

    if ($lightning || apply_filters('scratchstart_clean_head', false)) {
        remove_action('wp_head', 'rsd_link');
        remove_action('wp_head', 'wlwmanifest_link');
        remove_action('wp_head', 'wp_generator');
        remove_action('wp_head', 'wp_shortlink_wp_head');
        remove_action('template_redirect', 'wp_shortlink_header', 11);
        remove_action('wp_head', 'rest_output_link_wp_head');
        remove_action('template_redirect', 'rest_output_link_header', 11);
        remove_action('wp_head', 'wp_oembed_add_discovery_links');
    }
}