# responsive-menu/3.0.12/src/app/Walkers/WpWalker.php

Responsive Menu – Create Mobile-Friendly Menu, version 3.0.12. 132 lines.

- Page: https://pluginprobe.com/plugins/responsive-menu/3.0.12/code/src/app/Walkers/WpWalker.php
- Raw: https://pluginprobe.com/plugins/responsive-menu/3.0.12/raw/src/app/Walkers/WpWalker.php
- Modified: 2016-09-22T09:45:08+00:00

Line numbers below start at 1. Link to a line or a range by appending a fragment to the
page URL, for example `https://pluginprobe.com/plugins/responsive-menu/3.0.12/code/src/app/Walkers/WpWalker.php#L10-L20`.

```php
<?php

namespace ResponsiveMenu\Walkers;
use ResponsiveMenu\Collections\OptionsCollection;

class WpWalker extends \Walker_Nav_Menu {

    private $current_item;

    public function __construct(OptionsCollection $options) {
      $this->options = $options;
    }

  	public function start_el(&$output, $item, $depth = 0, $args = array(), $id = 0) {

      $this->setCurrentItem($item);

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

      # Turn into our Responsive Menu Classes
      foreach($classes as $class):
        switch($class):
          case 'menu-item': $responsive_menu_classes[] = 'responsive-menu-item'; break;
          case 'current-menu-item': $responsive_menu_classes[] = 'responsive-menu-current-item'; break;
          case 'menu-item-has-children': $responsive_menu_classes[] = 'responsive-menu-item-has-children'; break;
          case 'current-menu-parent': $responsive_menu_classes[] = 'responsive-menu-item-current-parent'; break;
          case 'current-menu-ancestor': $responsive_menu_classes[] = 'responsive-menu-item-current-ancestor'; break;
        endswitch;
      endforeach;

      /* Clear child class if we are at the final depth level */
      if(isset($responsive_menu_classes)):
        if($depth + 1 == $this->options['menu_depth']->getValue() && ($key = array_search('responsive-menu-item-has-children', $responsive_menu_classes)) !== false) {
          unset($responsive_menu_classes[$key]);
        }
      endif;

  		$class_names = join(' ', array_unique($responsive_menu_classes));
  		$class_names = $class_names ? ' class="' . esc_attr( $class_names ) . '"' : '';

  		$id = ' id="responsive-menu-item-' . esc_attr( $item->ID ) . '"';

  		$output .= '<li' . $id . $class_names .'>';

  		$atts = array();
  		$atts['title']  = ! empty( $item->attr_title ) ? $item->attr_title : '';
  		$atts['target'] = ! empty( $item->target )     ? $item->target     : '';
  		$atts['rel']    = ! empty( $item->xfn )        ? $item->xfn        : '';
  		$atts['href']   = ! empty( $item->url )        ? $item->url        : '';
  		$atts['class']   = 'responsive-menu-item-link';

  		$atts = apply_filters( 'nav_menu_link_attributes', $atts, $item, $args, $depth );

  		$attributes = '';
  		foreach ( $atts as $attr => $value ) {
  			if ( ! empty( $value ) ) {
  				$value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
  				$attributes .= ' ' . $attr . '="' . $value . '"';
  			}
  		}

  		/** This filter is documented in wp-includes/post-template.php */
  		$title = apply_filters( 'the_title', $item->title, $item->ID );

  		$title = apply_filters( 'nav_menu_item_title', $title, $item, $args, $depth );

      /* Calculate which arrow to show */
      if(in_array('responsive-menu-item-has-children', $responsive_menu_classes)):
        $inactive_arrow = '<div class="responsive-menu-subarrow">' . $this->options->getInActiveArrow() . '</div>';
        $active_arrow = '<div class="responsive-menu-subarrow responsive-menu-subarrow-active">' . $this->options->getActiveArrow()  . '</div>';
        if($this->options['auto_expand_all_submenus'] == 'on'):
          $initial_arrow = $active_arrow;
        elseif(
        $this->options['auto_expand_current_submenus'] == 'on' && (in_array('responsive-menu-item-current-parent', $responsive_menu_classes)
            || in_array('responsive-menu-item-current-ancestor', $responsive_menu_classes))):
            $initial_arrow = $active_arrow;
        else:
          $initial_arrow = $inactive_arrow;
        endif;
      else:
        $initial_arrow = '';
      endif;

      /* Clear Arrow if we are at the final depth level */
      if($depth + 1 == $this->options['menu_depth']->getValue())
        $initial_arrow = '';

  		$item_output = '<a'. $attributes .'>';
  		$item_output .= $title;
      $item_output .= $initial_arrow;
  		$item_output .= '</a>';

  		$output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args );

  	}

    public function start_lvl(&$output, $depth = 0, $args = array()) {
      $output .= "<ul class='responsive-menu-submenu responsive-menu-submenu-depth-" . ($depth + 1) . $this->getSubmenuClassOpenOrNot() . "'>";
  	}

  	public function end_el(&$output, $item, $depth = 0, $args = array()) {
  		$output .= "</li>";
  	}

    public function end_lvl(&$output, $depth = 0, $args = array()) {
  		$output .= "</ul>";
  	}

    public function setCurrentItem($item) {
      $this->current_item = $item;
    }

    public function getCurrentItem() {
      return $this->current_item;
    }

    public function getSubmenuClassOpenOrNot() {
      return $this->expandAllSubmenuOptionsIsOn() || $this->expandCurrentSubmenuOnAndItemIsParent() ? ' responsive-menu-submenu-open' : '';
    }

    public function expandAllSubmenuOptionsIsOn() {
      return $this->options['auto_expand_all_submenus'] == 'on';
    }

    public function expandCurrentSubmenuOnAndItemIsParent() {
      return ($this->options['auto_expand_current_submenus'] == 'on')
        && ($this->getCurrentItem()->current_item_ancestor || $this->getCurrentItem()->current_item_parent);
    }

}

```