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yamm-nav-walker.php
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yamm-nav-walker.php
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<?php
/**
* Class Name: Yamm_Nav_Walker & Yamm_Fw_Nav_Walker
* GitHub URI: https://github.com/macdonaldr93/yamm-nav-walker
* Description: A custom WordPress nav walker class to implement the Yamm 3 bootstrap mega menu navigation style in a custom theme using the WordPress built in menu manager.
* Version: 1.0.1
* Author: Ryan Macdonald - @macdonaldr93
* License: GPL-2.0+
* License URI: http://www.gnu.org/licenses/gpl-2.0.txt
*/
class Yamm_Nav_Walker extends Walker_Nav_Menu
{
public function check_current($classes)
{
return preg_match('/(current[-_])|active|dropdown/', $classes);
}
public function start_lvl(&$output, $depth = 0, $args = array())
{
$output .= ($depth == 0) ? "\n<ul class=\"dropdown-menu\">\n" . "\n<div class=\"yamm-content\">\n" . "\n<div class=\"row\">\n" : "\n<ul class=\"elementy-ul yamm-fw\">\n";
}
public function start_el(&$output, $item, $depth = 0, $args = array(), $id = 0)
{
$item_html = '';
parent::start_el($item_html, $item, $depth, $args);
if ($item->is_dropdown && ($depth === 0)) {
$item_html = str_replace('<a', '<a class="dropdown-toggle" data-toggle="dropdown"', $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('roots_wp_nav_menu_item', $item_html);
$output .= $item_html;
}
public function display_element($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) {
$element->classes[] = 'dropdown';
}
if ($element && ($depth === 1)) {
$element->classes[] = 'col-sm-4 menu-col';
}
parent::display_element($element, $children_elements, $max_depth, $depth, $args, $output);
}
public function end_lvl(&$output, $depth = 0, $args = array())
{
$output .= ($depth == 0) ? "\n</div>\n" . "\n</div>\n" . "\n</ul>\n" : "\n</ul>\n";
}
}
/**
* Remove the id="" on nav menu items
* Return 'menu-slug' for nav menu classes
*/
function yamm_roots_nav_menu_css_class($classes, $item)
{
$slug = sanitize_title($item->title);
$classes = preg_replace('/(current(-menu-|[-_]page[-_])(item|parent|ancestor))/', 'active-${3}', $classes);
$classes = preg_replace('/(active-item)/', 'active', $classes);
$classes = preg_replace('/^((menu|page)[-_\w+]+)+/', '', $classes);
$classes[] = 'menu-' . $slug;
$classes = array_unique($classes);
return array_filter($classes);
}
add_filter('nav_menu_css_class', 'yamm_roots_nav_menu_css_class', 10, 2);
add_filter('nav_menu_item_id', '__return_null');
/**
* Clean up wp_nav_menu_args
*
* Remove the container
* Use Yamm_Nav_Walker() by default
*/
function yamm_roots_nav_menu_args($args = '')
{
$yamm_roots_nav_menu_args['container'] = false;
if (!$args['items_wrap']) {
$yamm_roots_nav_menu_args['items_wrap'] = '<ul class="%2$s">%3$s</ul>';
}
if (current_theme_supports('bootstrap-top-navbar') && !$args['depth']) {
$yamm_roots_nav_menu_args['depth'] = 3;
}
if (!$args['walker']) {
$yamm_roots_nav_menu_args['walker'] = new Yamm_Nav_Walker();
}
return array_merge($args, $yamm_roots_nav_menu_args);
}
add_filter('wp_nav_menu_args', 'yamm_roots_nav_menu_args');
/**
* Fallback to simple list
*/
function Yamm_Nav_Walker_menu_fallback()
{
$fb_output = '<ul class="nav navbar-nav">';
$fb_output .= '<li><a href="' . esc_url(home_url()) . '">' . __('Home', THEMETD) . '</a></li>';
if (current_user_can('manage_options')) {
$fb_output .= '<li><a href="' . admin_url('nav-menus.php') . '">' . __('Add a menu', THEMETD) . '</a></li>';
}
$fb_output .= '</ul>';
echo $fb_output;
}
class Yamm_Fw_Nav_Walker extends Walker_Nav_Menu
{
public function check_current($classes)
{
return preg_match('/(current[-_])|active|dropdown/', $classes);
}
public function start_lvl(&$output, $depth = 0, $args = array())
{
$output .= ($depth == 0) ? "\n<ul class=\"dropdown-menu\">\n" . "\n<div class=\"yamm-content\">\n" . "\n<div class=\"row\">\n" : "\n<ul class=\"elementy-ul yamm-fw\">\n";
}
public function start_el(&$output, $item, $depth = 0, $args = array(), $id = 0)
{
$item_html = '';
parent::start_el($item_html, $item, $depth, $args);
if ($item->is_dropdown && ($depth === 0)) {
$item_html = str_replace('<a', '<a class="dropdown-toggle" data-toggle="dropdown" data-target="#"', $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('roots_wp_nav_menu_item', $item_html);
$output .= $item_html;
}
public function display_element($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) {
$element->classes[] = 'dropdown yamm-fw';
}
if ($element && ($depth === 1)) {
$element->classes[] = 'col-sm-4 menu-col';
}
parent::display_element($element, $children_elements, $max_depth, $depth, $args, $output);
}
public function end_lvl(&$output, $depth = 0, $args = array())
{
$output .= ($depth == 0) ? "\n</div>\n" . "\n</div>\n" . "\n</ul>\n" : "\n</ul>\n";
}
}
/**
* Remove the id="" on nav menu items
* Return 'menu-slug' for nav menu classes
*/
function yamm_fw_roots_nav_menu_css_class($classes, $item)
{
$slug = sanitize_title($item->title);
$classes = preg_replace('/(current(-menu-|[-_]page[-_])(item|parent|ancestor))/', 'active-${3}', $classes);
$classes = preg_replace('/(active-item)/', 'active', $classes);
$classes = preg_replace('/^((menu|page)[-_\w+]+)+/', '', $classes);
$classes[] = 'menu-' . $slug;
$classes = array_unique($classes);
return array_filter($classes);
}
add_filter('nav_menu_css_class', 'yamm_fw_roots_nav_menu_css_class', 10, 2);
add_filter('nav_menu_item_id', '__return_null');
/**
* Clean up wp_nav_menu_args
*
* Remove the container
* Use Yamm_Fw_Nav_Walker() by default
*/
function yamm_fw_roots_nav_menu_args($args = '')
{
$yamm_fw_roots_nav_menu_args['container'] = false;
if (!$args['items_wrap']) {
$yamm_fw_roots_nav_menu_args['items_wrap'] = '<ul class="%2$s">%3$s</ul>';
}
if (current_theme_supports('bootstrap-top-navbar') && !$args['depth']) {
$yamm_fw_roots_nav_menu_args['depth'] = 3;
}
if (!$args['walker']) {
$yamm_fw_roots_nav_menu_args['walker'] = new Yamm_Fw_Nav_Walker();
}
return array_merge($args, $yamm_fw_roots_nav_menu_args);
}
add_filter('wp_nav_menu_args', 'yamm_fw_roots_nav_menu_args');
/**
* Fallback to simple list
*/
function Yamm_Fw_Nav_Walker_menu_fallback()
{
$fb_output = '<ul class="nav navbar-nav">';
$fb_output .= '<li><a href="' . esc_url(home_url()) . '">' . __('Home', THEMETD) . '</a></li>';
if (current_user_can('manage_options')) {
$fb_output .= '<li><a href="' . admin_url('nav-menus.php') . '">' . __('Add a menu', THEMETD) . '</a></li>';
}
$fb_output .= '</ul>';
echo $fb_output;
}