Overriding a function in a class from the Wordpress plugin Elementor Pro about Product Upsells - wordpress

Question

I would like to find a way to override the following file in the plugin Elementor Pro for wordpress to add an "else" in "protected function render()". I want to be able to display a message when there is no upsell available in my carrousel from element pro.
<?php
namespace ElementorPro\Modules\Woocommerce\Widgets;
use Elementor\Controls_Manager;
use Elementor\Core\Kits\Documents\Tabs\Global_Colors;
use Elementor\Core\Kits\Documents\Tabs\Global_Typography;
use Elementor\Group_Control_Typography;
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly
}
class Product_Upsell extends Products_Base {
public function get_name() {
return 'woocommerce-product-upsell';
}
public function get_title() {
return esc_html__( 'Upsells', 'elementor-pro' );
}
public function get_icon() {
return 'eicon-product-upsell';
}
public function get_keywords() {
return [ 'woocommerce', 'shop', 'store', 'upsell', 'product' ];
}
protected function register_controls() {
$this->start_controls_section(
'section_upsell_content',
[
'label' => esc_html__( 'Upsells', 'elementor-pro' ),
]
);
$this->add_columns_responsive_control();
$this->add_control(
'orderby',
[
'label' => esc_html__( 'Order By', 'elementor-pro' ),
'type' => Controls_Manager::SELECT,
'default' => 'date',
'options' => [
'date' => esc_html__( 'Date', 'elementor-pro' ),
'title' => esc_html__( 'Title', 'elementor-pro' ),
'price' => esc_html__( 'Price', 'elementor-pro' ),
'popularity' => esc_html__( 'Popularity', 'elementor-pro' ),
'rating' => esc_html__( 'Rating', 'elementor-pro' ),
'rand' => esc_html__( 'Random', 'elementor-pro' ),
'menu_order' => esc_html__( 'Menu Order', 'elementor-pro' ),
],
]
);
$this->add_control(
'order',
[
'label' => esc_html__( 'Order', 'elementor-pro' ),
'type' => Controls_Manager::SELECT,
'default' => 'desc',
'options' => [
'asc' => esc_html__( 'ASC', 'elementor-pro' ),
'desc' => esc_html__( 'DESC', 'elementor-pro' ),
],
]
);
$this->end_controls_section();
parent::register_controls();
$this->start_injection( [
'at' => 'before',
'of' => 'section_design_box',
] );
$this->start_controls_section(
'section_heading_style',
[
'label' => esc_html__( 'Heading', 'elementor-pro' ),
'tab' => Controls_Manager::TAB_STYLE,
]
);
$this->add_control(
'show_heading',
[
'label' => esc_html__( 'Heading', 'elementor-pro' ),
'type' => Controls_Manager::SWITCHER,
'label_off' => esc_html__( 'Hide', 'elementor-pro' ),
'label_on' => esc_html__( 'Show', 'elementor-pro' ),
'default' => 'yes',
'return_value' => 'yes',
'prefix_class' => 'show-heading-',
]
);
$this->add_control(
'heading_color',
[
'label' => esc_html__( 'Color', 'elementor-pro' ),
'type' => Controls_Manager::COLOR,
'global' => [
'default' => Global_Colors::COLOR_PRIMARY,
],
'selectors' => [
'{{WRAPPER}}.elementor-wc-products .products > h2' => 'color: {{VALUE}}',
],
'condition' => [
'show_heading!' => '',
],
]
);
$this->add_group_control(
Group_Control_Typography::get_type(),
[
'name' => 'heading_typography',
'global' => [
'default' => Global_Typography::TYPOGRAPHY_PRIMARY,
],
'selector' => '{{WRAPPER}}.elementor-wc-products .products > h2',
'condition' => [
'show_heading!' => '',
],
]
);
$this->add_responsive_control(
'heading_text_align',
[
'label' => esc_html__( 'Text Align', 'elementor-pro' ),
'type' => Controls_Manager::CHOOSE,
'options' => [
'left' => [
'title' => esc_html__( 'Left', 'elementor-pro' ),
'icon' => 'eicon-text-align-left',
],
'center' => [
'title' => esc_html__( 'Center', 'elementor-pro' ),
'icon' => 'eicon-text-align-center',
],
'right' => [
'title' => esc_html__( 'Right', 'elementor-pro' ),
'icon' => 'eicon-text-align-right',
],
],
'selectors' => [
'{{WRAPPER}}.elementor-wc-products .products > h2' => 'text-align: {{VALUE}}',
],
'condition' => [
'show_heading!' => '',
],
]
);
$this->add_responsive_control(
'heading_spacing',
[
'label' => esc_html__( 'Spacing', 'elementor-pro' ),
'type' => Controls_Manager::SLIDER,
'size_units' => [ 'px', 'em' ],
'selectors' => [
'{{WRAPPER}}.elementor-wc-products .products > h2' => 'margin-bottom: {{SIZE}}{{UNIT}}',
],
'condition' => [
'show_heading!' => '',
],
]
);
$this->end_controls_section();
$this->end_injection();
}
protected function render() {
$settings = $this->get_settings_for_display();
// Add a wrapper class to the Add to Cart & View Items elements if the automically_align_buttons switch has been selected.
if ( 'yes' === $settings['automatically_align_buttons'] ) {
add_filter( 'woocommerce_loop_add_to_cart_link', [ $this, 'add_to_cart_wrapper' ], 10, 1 );
}
$limit = '-1';
$columns = 4;
$orderby = 'rand';
$order = 'desc';
if ( ! empty( $settings['columns'] ) ) {
$columns = $settings['columns'];
}
if ( ! empty( $settings['orderby'] ) ) {
$orderby = $settings['orderby'];
}
if ( ! empty( $settings['order'] ) ) {
$order = $settings['order'];
}
ob_start();
woocommerce_upsell_display(
sanitize_text_field( $limit ),
sanitize_text_field( $columns ),
sanitize_text_field( $orderby ),
sanitize_text_field( $order )
);
$upsells_html = ob_get_clean();
if ( $upsells_html ) {
$upsells_html = str_replace( '<ul class="products', '<ul class="products elementor-grid', $upsells_html );
// PHPCS - Doesn't need to be escaped since it's a WooCommerce template, and 3rd party plugins might hook into it.
echo $upsells_html; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
}
///////// The code I want to add ///////
else {
echo "no product available";
}
///////// The code I want to add ///////
if ( 'yes' === $settings['automatically_align_buttons'] ) {
remove_filter( 'woocommerce_loop_add_to_cart_link', [ $this, 'add_to_cart_wrapper' ] );
}
}
public function render_plain_content() {}
public function get_group_name() {
return 'woocommerce';
}
}
I tried many things but with no success. For example, put the same file in child theme with same path or calling it with the namespace. I can't use the filters and I have no idea how to do it properly. Right now it is working but if I update the plugin I loose the modification.