Disable Product delete for published products only

/**

 * This will disable delete only for published products, leaving drafts to be able to be deleted

 * You would not need to disable delete in the WC Vendors Settings in WP Admin. 

 */

add_filter( 'wcv_product_table_row_actions', 'wcv_allow_delete_draft', 10, 2 );

 function wcv_allow_delete_draft( $actions, $product ){ 

	// If the product is published, disable delete 

	if ( 'publish' ===  $product->get_status() ){ 

		unset( $actions['delete']  );

	}

	return $actions;

}

/**

 * Disable the draft button on the product edit page if the product is published. 

 * 

 * This will only work with WC Vendors Pro 1.7.9 and above. 

 */

add_filter( 'wcv_product_draft_button', 'wcv_disable_draft' ); 

 function wcv_disable_draft( $field ){ 

	$object_id = get_query_var( 'object_id' );

	$product = wc_get_product( $object_id ); 

	if (is_object( $product) && 'publish' === $product->get_status() ){ 

		return array();

	} 

	return $field;

}