Change Function themes

hello

I have a little problem with my home-made themes.

when I check in with the theme of the check turns out there is a function that must be repaired although it can be used. below is the function that is considered less fit.

INFO: includes/theme-widgets.php The theme appears to use include or require. If these are being used to include separate sections of a template from independent files, then get_template_part() should be used instead.
Line 20: require_once($jseo_widgets_dir . $jseo_widgets_file);

<?php

/*------------------------------------------------------*/
/* Loads all the .php files found in /includes/widgets/ directory */
/*------------------------------------------------------*/

	$preview_template = _preview_theme_template_filter();

	if(!empty($preview_template)){
		$jseo_widgets_dir = WP_CONTENT_DIR . "/themes/".$preview_template."/includes/widgets/";
	} else {
    	$jseo_widgets_dir = WP_CONTENT_DIR . "/themes/".get_option('template')."/includes/widgets/";
    }

    if (@is_dir($jseo_widgets_dir)) {
		$jseo_widgets_dh = opendir($jseo_widgets_dir);
		while (($jseo_widgets_file = readdir($jseo_widgets_dh)) !== false) {

			if(strpos($jseo_widgets_file,'.php') && $jseo_widgets_file != "widget-blank.php") {
				require_once($jseo_widgets_dir . $jseo_widgets_file);

			}
		}
		closedir($jseo_widgets_dh);
	}

?>

I hope there are provide clues…

Tanks you brother.