{#
/**
 * @file
 * Default theme implementation to display a sitemap menu.
 *
 * Available variables:
 * - menu_name: The machine name of the menu.
 * - items: A nested list of menu items. Each menu item contains:
 *   - attributes: HTML attributes for the menu item.
 *   - below: The menu item child items.
 *   - title: The menu link title.
 *   - url: The menu link url, instance of \Drupal\Core\Url
 *   - localized_options: Menu link localized options.
 *   - is_expanded: TRUE if the link has visible children within the current
 *     menu tree.
 *   - is_collapsed: TRUE if the link has children within the current menu tree
 *     that are not currently visible.
 *   - in_active_trail: TRUE if the link is in the active trail.
 *
 * @ingroup themeable
 */
#}
{% import _self as menus %}

{{ menus.menu_links(items, attributes, 0) }}

{% macro menu_links(items, attributes, menu_level) %}
  {% import _self as menus %}
  {% if items %}
    {% set level_class = 'menu-level-' ~ menu_level %}
    {% set aria_level = menu_level + 1 %}

    {% if menu_level == 0 %}
      <ul{{ attributes.addClass('sitemap', level_class) }} role="tree" aria-level="{{ aria_level }}">
    {% else %}
      <ul class="{{ level_class }}" role="group" aria-level="{{ aria_level }}">
    {% endif %}

    {% for item in items %}
      {% set has_children = item.below is not empty %}
      {% set is_clickable = item.url is defined and item.url.toString() != '' %}
      <li{{ item.attributes.addClass('menu-item', has_children ? 'has-children' : '') }}>

        {% if is_clickable %}
          <a href="{{ item.url.toString() }}" class="menu-link" role="treeitem" aria-level="{{ aria_level }}">
            {{ item.title }}
          </a>
        {% else %}
          <span class="menu-label" role="treeitem" aria-level="{{ aria_level }}">
            {{ item.title }}
          </span>
        {% endif %}

        {% if has_children %}
          {{ menus.menu_links(item.below, attributes, menu_level + 1) }}
        {% endif %}
      </li>
    {% endfor %}
    </ul>
  {% endif %}
{% endmacro %}
