This is the code from the child theme functions.php. An answer regarding this would be a big help:
<?php
// =============================================================================
// FUNCTIONS.PHP
// -----------------------------------------------------------------------------
// Theme functions for X.
// =============================================================================
// =============================================================================
// TABLE OF CONTENTS
// -----------------------------------------------------------------------------
// 01. Boot Registry
// 02. Bootstrap Class
// 03. Content Width
// 04. Localization
// =============================================================================
// Boot Registry
// =============================================================================
function x_boot_registry() {
return array(
'preinit' => array(
'functions/helpers',
'functions/thumbnails',
'functions/setup',
'tco/tco',
'legacy/setup',
'functions/fonts',
'functions/custom-sidebars',
'functions/portfolio',
'functions/plugins/setup',
'functions/updates/class-theme-updater',
'functions/updates/class-plugin-updater'
),
'init' => array(),
'front_end' => array(
'functions/frontend/view-routing',
'functions/frontend/styles',
'functions/frontend/scripts',
'functions/frontend/content',
'functions/frontend/classes',
'functions/frontend/meta',
'functions/frontend/integrity',
'functions/frontend/renew',
'functions/frontend/icon',
'functions/frontend/ethos',
'functions/frontend/social',
'functions/frontend/breadcrumbs',
'functions/frontend/pagination',
'functions/frontend/featured',
'functions/frontend/conditionals',
),
'logged_in' => array(
),
'admin' => array(
'functions/admin/class-validation',
'functions/admin/class-validation-updates',
'functions/admin/class-validation-theme-options-manager',
'functions/admin/class-validation-extensions',
'functions/admin/setup',
'functions/admin/customizer',
'functions/admin/meta-boxes',
'functions/admin/meta-entries',
'functions/admin/taxonomies'
),
'app_init' => array(
'functions/theme-options',
),
'ajax' => array()
);
}
// Bootstrap Class
// =============================================================================
class X_Bootstrap {
private static $instance;
protected $registry = array();
protected $theme_option_defaults = array();
public function boot() {
// Define Path / URL Constants
// ---------------------------
define( 'X_TEMPLATE_PATH', get_template_directory() );
define( 'X_TEMPLATE_URL', get_template_directory_uri() );
// Preboot
// -------
$x_boot_files = glob( X_TEMPLATE_PATH . '/framework/load/*.php' );
sort( $x_boot_files );
foreach ( $x_boot_files as $filename ) {
$file = basename( $filename, '.php' );
if ( file_exists( $filename ) && apply_filters( "x_pre_boot_$file", '__return_true' ) ) {
require_once( $filename );
}
}
// Set Asset Revision Constant (For Cache Busting)
// -----------------------------------------------
define( 'X_ASSET_REV', X_VERSION );
// Preinit
// --------
$this->registry = x_boot_registry();
$this->boot_context('preinit');
// Theme Option Defaults
// ---------------------
$this->theme_option_defaults = include X_TEMPLATE_PATH . '/framework/data/option-defaults.php';
if ( is_admin() ) {
$this->boot_context('admin');
}
add_action( 'init', array( $this, 'init' ) );
add_action( 'admin_init', array( $this, 'ajax_init' ) );
add_action( 'cornerstone_before_boot_app', array( $this, 'app_init' ) );
add_action( 'cornerstone_before_custom_endpoint', array( $this, 'app_init' ) );
add_action( 'cornerstone_before_admin_ajax', array( $this, 'app_init' ) );
add_action( 'cornerstone_before_admin_ajax', array( $this, 'ajax_init' ) );
add_action( 'cornerstone_before_custom_endpoint', array( $this, 'ajax_init' ) );
}
public function init() {
$this->boot_context('init');
if ( ! is_admin() ) {
$this->boot_context('front_end');
}
if ( is_user_logged_in() ) {
$this->boot_context('logged_in');
}
}
public function admin_init() {
$this->boot_context('admin_init');
}
public function app_init() {
$this->boot_context('app_init');
}
public function ajax_init() {
if ( defined( 'DOING_AJAX' ) ) {
$this->boot_context('ajax');
}
}
public function boot_context( $context ) {
if ( ! isset( $this->registry[$context] ) ) {
return;
}
foreach ( $this->registry[$context] as $file ) {
require_once( X_TEMPLATE_PATH . "/framework/$file.php" );
}
do_action( 'x_boot_' . $context );
}
public static function instance() {
if ( ! isset( self::$instance ) ) {
self::$instance = new X_Bootstrap();
}
return self::$instance;
}
public function get_theme_option_defaults() {
return $this->theme_option_defaults;
}
public function get_theme_option_default( $key ) {
return isset( $this->theme_option_defaults[$key]) ? $this->theme_option_defaults[$key] : false;
}
}
function x_bootstrap() {
return X_Bootstrap::instance();
}
x_bootstrap()->boot();
// Content Width
// =============================================================================
if ( ! isset( $content_width ) ) :
$stack = x_get_stack();
switch ( $stack ) {
case 'integrity' :
$content_width = x_post_thumbnail_width() - 120;
break;
case 'renew' :
$content_width = x_post_thumbnail_width();
break;
case 'icon' :
$content_width = x_post_thumbnail_width();
break;
case 'ethos' :
$content_width = x_post_thumbnail_width();
break;
}
endif;
// Localization
// =============================================================================
load_theme_textdomain( '__x__', X_TEMPLATE_PATH . '/framework/lang' );