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@vburlak
Forked from slobich/gist:bfa3d53308ef067d3694
Created February 11, 2016 14:34
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<?php
namespace Roots\Sage\Nav;
use Roots\Sage\Utils;
/**
* Cleaner walker for wp_nav_menu()
*
* Walker_Nav_Menu (WordPress default) example output:
* <li id="menu-item-8" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-8"><a href="/">Home</a></li>
* <li id="menu-item-9" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-9"><a href="/sample-page/">Sample Page</a></l
*
* SageNavWalker example output:
* <li class="menu-home"><a href="/">Home</a></li>
* <li class="menu-sample-page"><a href="/sample-page/">Sample Page</a></li>
*/
class SageNavWalker extends \Walker_Nav_Menu {
private $cpt; // Boolean, is current post a custom post type
private $archive; // Stores the archive page for current URL
public function __construct() {
add_filter('nav_menu_css_class', array($this, 'cssClasses'), 10, 2);
add_filter('nav_menu_item_id', '__return_null');
$cpt = get_post_type();
$this->cpt = in_array($cpt, get_post_types(array('_builtin' => false)));
$this->archive = get_post_type_archive_link($cpt);
}
public function checkCurrent($classes) {
return preg_match('/(current[-_])|active|dropdown/', $classes);
}
// @codingStandardsIgnoreStart
function start_lvl(&$output, $depth = 0, $args = []) {
$output .= "\n<ul class=\"sub-nav__list\">\n";
}
function start_el(&$output, $item, $depth = 0, $args = [], $id = 0) {
$item_html = '';
parent::start_el($item_html, $item, $depth, $args);
if ($item->is_dropdown && ($depth === 0)) {
//$item_html = str_replace('<a', '<a ', $item_html);
//$item_html = str_replace('</a>', ' <b class="caret"></b></a>', $item_html);
} elseif (stristr($item_html, 'li class="divider')) {
$item_html = preg_replace('/<a[^>]*>.*?<\/a>/iU', '', $item_html);
} elseif (stristr($item_html, 'li class="dropdown-header')) {
$item_html = preg_replace('/<a[^>]*>(.*)<\/a>/iU', '$1', $item_html);
}
$item_html = apply_filters('sage/wp_nav_menu_item', $item_html);
$output .= $item_html;
}
function display_element($element, &$children_elements, $max_depth, $depth = 0, $args, &$output) {
$element->is_dropdown = ((!empty($children_elements[$element->ID]) && (($depth + 1) < $max_depth || ($max_depth === 0))));
if ($element->is_dropdown) {
$element->classes[] = 'dropdown';
foreach ($children_elements[$element->ID] as $child) {
if ($child->current_item_parent || Utils\url_compare($this->archive, $child->url)) {
$element->classes[] = 'active';
}
}
}
$element->is_active = strpos($this->archive, $element->url);
if ($element->is_active) {
$element->classes[] = 'active';
}
if ($depth === 0) {
$element->classes[] = 'nav__item';
} else {
$element->classes[] = 'sub-nav__item';
}
parent::display_element($element, $children_elements, $max_depth, $depth, $args, $output);
}
// @codingStandardsIgnoreEnd
public function cssClasses($classes, $item) {
$slug = sanitize_title($item->title);
if ($this->cpt) {
$classes = str_replace('current_page_parent', '', $classes);
if (Utils\url_compare($this->archive, $item->url)) {
$classes[] = 'active';
}
}
$classes = preg_replace('/(current(-menu-|[-_]page[-_])(item|parent|ancestor))/', 'active', $classes);
$classes = preg_replace('/^((menu|page)[-_\w+]+)+/', '', $classes);
$classes[] = 'menu-' . $slug;
$classes = array_unique($classes);
return array_filter($classes, 'Roots\\Sage\\Utils\\is_element_empty');
}
}
/**
* Clean up wp_nav_menu_args
*
* Remove the container
* Remove the id="" on nav menu items
*/
function nav_menu_args($args = '') {
$nav_menu_args = [];
$nav_menu_args['container'] = false;
if (!$args['items_wrap']) {
$nav_menu_args['items_wrap'] = '<ul class="%2$s">%3$s</ul>';
}
if (!$args['depth']) {
$nav_menu_args['depth'] = 2;
}
return array_merge($args, $nav_menu_args);
}
add_filter('wp_nav_menu_args', __NAMESPACE__ . '\\nav_menu_args');
add_filter('nav_menu_item_id', '__return_null');
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