Custom Elementor Widget functions.php

functions.php

<?php
/**
 * Custom Elementor Widgets
 */
class Custom_Elementor_Widgets {

    protected static $instance = null;

    public static function get_instance(){
        if ( !isset( static::$instance ) ) {
            static::$instance = new static;
        }

        return static::$instance;
    }

    protected function __construct(){
        require_once( __DIR__ . DIRECTORY_SEPARATOR . 'elementor-widgets' . DIRECTORY_SEPARATOR . 'widget-custom-blog-loop.php' );
        add_action( 'elementor/widgets/widgets_registered', [ $this, 'register_widgets' ] );
    }

    public function register_widgets(){
        \Elementor\Plugin::instance()->widgets_manager->register_widget_type( new \Elementor\My_Widget_Custom_Blog_Loop() );
    }

}

add_action( 'init', 'custom_elementor_init' );

/**
 * @hook init
 * instantiate custom elementor widgets
 */
function custom_elementor_init(){
    Custom_Elementor_Widgets::get_instance();
}