<?php

if ( ! class_exists( 'OazaMikadoClassFullscreenNavigationWalker' ) ) {
	class OazaMikadoClassFullscreenNavigationWalker extends Walker_Nav_Menu {

		// add classes to ul sub-menus
		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 );
		}

		function start_lvl( &$output, $depth = 0, $args = array() ) {
			$indent = str_repeat( "\t", $depth );

			// build html
			$output .= "\n" . $indent . '<ul class="sub_menu">' . "\n";
		}

		function end_lvl( &$output, $depth = 0, $args = array() ) {
			$indent = str_repeat( "\t", $depth );

			$output .= "$indent</ul>" . "\n";
		}

		// add main/sub classes to li's and links
		function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {

			$sub    = "";
			$indent = ( $depth > 0 ? str_repeat( "\t", $depth ) : '' ); // code indent
			if ( $depth >= 0 && $args->has_children ) :
				$sub = ' has_sub';
			endif;

			// passed classes
			$classes = empty( $item->classes ) ? array() : (array) $item->classes;

			$class_names = esc_attr( implode( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item ) ) );

			$anchor = '';
			if ( $item->anchor != "" ) {
				$anchor = '#' . esc_attr( $item->anchor );
			}

			$active = "";
			// depth dependent classes
			if ( $item->anchor == "" && ( ( $item->current && $depth == 0 ) || ( $item->current_item_ancestor && $depth == 0 ) ) ):
				$active = 'mkdf-active-item';
			endif;

			// build html
			$output .= $indent . '<li id="popup-menu-item-' . $item->ID . '" class="' . $class_names . ' ' . $active . $sub . '">';

			$current_a = "";
			// link attributes
			$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 .= ' href="' . esc_url( $item->url ) . $anchor . '"';
			if ( ( $item->current && $depth == 0 ) || ( $item->current_item_ancestor && $depth == 0 ) ):
				$current_a .= ' current ';
			endif;

			$attributes  .= ' class="' . $current_a . '"';
			$item_output = $args->before;
			if ( $item->hide == "" ) {
				if ( $item->nolink == "" ) {
					$item_output .= '<a' . $attributes . '>';
				} else {
					$item_output .= '<a href="#">';
				}
				$item_output .= $args->link_before . apply_filters( 'the_title', $item->title, $item->ID );
				$item_output .= $args->link_after;
				if ( $args->has_children ) {
					$item_output .= '<i class="mkdf-fullscreen-menu-arrow fa fa-angle-down"></i>';
				}
				$item_output .= '</a>';
			}
			$item_output .= $args->after;

			// build html
			$output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args );
		}
	}
}