<?php
if (function_exists('register_nav_menus')) {
    register_nav_menus(array(
        'top-menu' => esc_html__('Top Menu', 'soundwave')
    ));
}
class CSS_Menu_Maker_Walker extends Walker {
    var $db_fields = array('parent' => 'menu_item_parent', 'id' => 'db_id');
    function start_lvl(&$output, $depth = 0, $args = array()) {
        $indent = str_repeat("\t", $depth);
        $output .= "\n$indent<ul>\n";
    }
    function end_lvl(&$output, $depth = 0, $args = array()) {
        $indent = str_repeat("\t", $depth);
        $output .= "$indent</ul>\n";
    }
    function start_el(&$output, $item, $depth = 0, $args = array(), $id = 0) {
        global $wp_query;
        $indent      = ($depth) ? str_repeat("\t", $depth) : '';
        $class_names = $value = '';
        $classes     = empty($item->classes) ? array() : (array) $item->classes;
        /* Add active class */
        if (in_array('current-menu-item', $classes)) {
            $classes[] = 'active';
            unset($classes['current-menu-item']);
        }
        /* Check for children */
        $children = get_posts(array(
            'post_type' => 'nav_menu_item',
            'nopaging' => true,
            'numberposts' => 1,
            'meta_key' => '_menu_item_menu_item_parent',
            'meta_value' => $item->ID
        ));
        if (!empty($children)) {
            $classes[] = 'has-sub';
        }
        $class_names = join(' ', apply_filters('nav_menu_css_class', array_filter($classes), $item, $args));
        $class_names = $class_names ? ' class="' . esc_attr($class_names) . '"' : '';
        $id          = apply_filters('nav_menu_item_id', 'menu-item-' . $item->ID, $item, $args);
        $id          = $id ? ' id="' . esc_attr($id) . '"' : '';
        $output .= $indent . '<li' . $id . $value . $class_names . '>';
        $attributes = !empty($item->attr_title) ? ' title="' . esc_attr($item->attr_title) . '"' : '';
        $attributes .= !empty($item->target) ? ' target="' . esc_attr($item->target) . '"' : '';
        $attributes .= !empty($item->xfn) ? ' rel="' . esc_attr($item->xfn) . '"' : '';
        $attributes .= !empty($item->url) ? ' href="' . esc_attr($item->url) . '"' : '';
		$args = (object) $args;
        $item_output = $args->before;
        $item_output .= '<a' . $attributes . '>';
        $item_output .= $args->link_before . apply_filters('the_title', $item->title, $item->ID) . $args->link_after;
        $item_output .= '</a>';
        $item_output .= $args->after;
        $output .= apply_filters('walker_nav_menu_start_el', $item_output, $item, $depth, $args);
    }
    function end_el(&$output, $item, $depth = 0, $args = array()) {
        $output .= "</li>\n";
    }
}
?>