PageBuilder final result

functions.php

function register_my_widgets_folder( $folders = array() ) {
    $folders[] = dirname( __FILE__ ) . '/widgets/';
    
    return $folders;
}
add_filter( 'siteorigin_widgets_widget_folders', 'register_my_widgets_folder' );

function manually_load_widgets() {
    $widgets_folder = dirname( __FILE__ ) . '/widgets/';
    $contents       = scandir( $widgets_folder );

    foreach( $contents as $item ) {
        if ( '.' === $item || '..' === $item || !is_dir( $widgets_folder . $item ) ) {
            continue;
        }

        foreach ( glob( $widgets_folder . $item . '/*.php' ) as $file ) {
            $file_data = get_file_data(
                $file,
                array(
                    'Widget Name' => 'Widget Name',
                    'Description' => 'Description',
                    'Author'      => 'Author',
                    'Author URI'  => 'Author URI',
                    'Widget URI'  => 'Widget URI',
                    'Video URI'   => 'Video URI',
                )
            );
            
            if ( isset( $file_data[ 'Widget Name' ] ) && ! empty( $file_data[ 'Widget Name' ] ) ) {
                require_once $file;
            }
        }
    }
}
    
add_action( 'after_setup_theme', array( $this, 'manually_load_widgets' ), 11 );

function register_unique_namespace( $class_prefixes = array() ) {
    $class_prefixes[] = 'My_Custom_Field_';
    
    return $class_prefixes;
}
add_filter( 'siteorigin_widgets_field_class_prefixes', 'register_unique_namespace' );

function register_my_custom_fields_folder( $class_paths = array() ) {
    $class_paths[] = dirname( __FILE__ ) . '/fields/';
    
    return $class_paths;
}
add_filter( 'siteorigin_widgets_field_class_paths', 'register_my_custom_fields_folder' );

function load_custom_fields() {
    $base_dir = dirname( __FILE__ ) . '/fields/';

    foreach ( glob( $base_dir . '*.php' ) as $file ) {
        require_once $file;
    }
}
add_action( 'admin_init', 'load_custom_fields' );