navwalker

<?php
/**
 * Top Bar Walker
 *
 * @since 1.0.0
 */
class Walker_Foundation extends Walker_Nav_Menu {
	function start_el(&$output, $item, $depth = 0, $args = array(), $current_object_id = 0) {
		global $wp_query;
		$indent = ($depth) ? str_repeat("\t", $depth) : '';
		$class_names = $value = '';
		$classes = empty($item->classes) ? array() : (array) $item->classes;
		$classes[] = ($item->current) ? 'active' : '';
		$classes[] = ($args->has_children) ? 'has-dropdown' : '';
		$args->link_before = (in_array('section', $classes)) ? '<label>' : '';
		$args->link_after = (in_array('section', $classes)) ? '</label>' : '';
		$class_names = join(' ', apply_filters('nav_menu_css_class', array_filter($classes), $item, $args ) );
		$class_names = strlen(trim($class_names)) > 0 ? ' class="'.esc_attr($class_names).'"' : '';
		$output .= $indent.'<li id="menu-item-'.$item->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       ).'"' : '';
		$item_output  = $args->before;
		$item_output .= (!in_array('section', $classes)) ? '<a'.$attributes.'>' : '';
		$item_output .= $args->link_before.apply_filters('the_title', $item->title, $item->ID);
		$item_output .= $args->link_after;
		$item_output .= (!in_array('section', $classes)) ? '</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()) {
		$output .= '</li>'."\n";
	}
	function start_lvl(&$output, $depth = 0, $args = array()) {
		$indent  = str_repeat("\t", $depth);
		$output .= "\n".$indent.'<ul class="sub-menu dropdown">'."\n";
	}
	function end_lvl(&$output, $depth = 0, $args = array()) {
		$indent  = str_repeat("\t", $depth);
		$output .= $indent.'</ul>'."\n";
	}
	function display_element($element, &$children_elements, $max_depth, $depth=0, $args, &$output) {
		$id_field = $this->db_fields['id'];
		if (is_object($args[0])) {
			$args[0]->has_children = ! empty($children_elements[$element->$id_field]);
		}
		return parent::display_element($element, $children_elements, $max_depth, $depth, $args, $output);
	}
}