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- <?php
- class BootstrapNavMenuWalker extends Walker_Nav_Menu {
- function start_lvl(&$output, $depth = 0, $args = Array()) {
- $indent = str_repeat("\t", $depth);
- $submenu = ($depth > 0) ? ' sub-menu' : '';
- $output .= "\n$indent<ul class=\"dropdown-menu$submenu depth_$depth\">\n";
- }
- function start_el(&$output, $item, $depth = 0, $args = array(), $id = 0) {
- $indent = ($depth) ? str_repeat("\t", $depth) : '';
- $li_attributes = '';
- $value = '';
- $classes = empty($item->classes) ? array() : (array) $item->classes;
- // managing divider: add divider class to an element to get a divider before it.
- $divider_class_position = array_search('divider', $classes);
- if ($divider_class_position !== false) {
- $output .= "<li class=\"divider\"></li>\n";
- unset($classes[$divider_class_position]);
- }
- $classes[] = ($args->has_children) ? 'dropdown' : '';
- $classes[] = ($item->current || $item->current_item_ancestor) ? 'active' : '';
- $classes[] = 'menu-item-' . $item->ID;
- if ($depth && $args->has_children) {
- $classes[] = 'dropdown-submenu';
- }
- $class_names = join(' ', apply_filters('nav_menu_css_class', array_filter($classes), $item, $args));
- $class_names = ' class="' . esc_attr($class_names) . '"';
- $id = apply_filters('nav_menu_item_id', 'menu-item-' . $item->ID, $item, $args);
- $id = strlen($id) ? ' id="' . esc_attr($id) . '"' : '';
- $output .= $indent . '<li' . $id . $value . $class_names . $li_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) . '"' : '';
- $attributes .=!empty($item->url) ? ' href="' . esc_attr($item->url) . '"' : '';
- $attributes .= ($args->has_children) ? ' class="dropdown-toggle" data-toggle="dropdown"' : '';
- $item_output = $args->before;
- $item_output .= '<a' . $attributes . '>';
- $item_output .= $args->link_before . apply_filters('the_title', $item->title, $item->ID) . $args->link_after;
- $item_output .= ($depth == 0 && $args->has_children) ? ' <b class="caret"></b></a>' : '</a>';
- $item_output .= $args->after;
- $output .= apply_filters('walker_nav_menu_start_el', $item_output, $item, $depth, $args);
- }
- function display_element($element, &$children_elements, $max_depth, $depth = 0, $args, &$output) {
- //v($element);
- if (!$element)
- return;
- $id_field = $this->db_fields['id'];
- //display this element
- if (is_array($args[0]))
- $args[0]['has_children'] = !empty($children_elements[$element->$id_field]);
- else if (is_object($args[0]))
- $args[0]->has_children = !empty($children_elements[$element->$id_field]);
- $cb_args = array_merge(array(&$output, $element, $depth), $args);
- call_user_func_array(array(&$this, 'start_el'), $cb_args);
- $id = $element->$id_field;
- // descend only when the depth is right and there are childrens for this element
- if (($max_depth == 0 || $max_depth > $depth + 1) && isset($children_elements[$id])) {
- foreach ($children_elements[$id] as $child) {
- if (!isset($newlevel)) {
- $newlevel = true;
- //start the child delimiter
- $cb_args = array_merge(array(&$output, $depth), $args);
- call_user_func_array(array(&$this, 'start_lvl'), $cb_args);
- }
- $this->display_element($child, $children_elements, $max_depth, $depth + 1, $args, $output);
- }
- unset($children_elements[$id]);
- }
- if (isset($newlevel) && $newlevel) {
- //end the child delimiter
- $cb_args = array_merge(array(&$output, $depth), $args);
- call_user_func_array(array(&$this, 'end_lvl'), $cb_args);
- }
- //end this element
- $cb_args = array_merge(array(&$output, $element, $depth), $args);
- call_user_func_array(array(&$this, 'end_el'), $cb_args);
- }
- }
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