material_base-8.x-2.x-dev/themes/material_base_mdc/templates/navigation/menu--overlay.html.twig

{#
/**
 * @file
 * Theme override to display a 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.
 */
#}
{% import _self as menus %}

{#
  We call a macro which calls itself to render the full tree.
  @see https://twig.symfony.com/doc/1.x/tags/macro.html
#}
<div class="overlay-menu overlay-menu--accordion">
  {{ menus.menu_links(items, attributes, 0) }}
</div>

{% macro menu_links(items, attributes, menu_level) %}
  {% import _self as menus %}
  {% if items %}
    {% if menu_level == 0 %}
      <ul{{ attributes.addClass('menu', 'menu--level-' ~ menu_level, 'mb-accordion', 'mdc-deprecated-list').setAttribute('data-mdc-auto-init', 'MDCList') }}>
    {% else %}
      <ul class="menu menu--level-{{ menu_level }}{{ menu_level == 1 ? ' mb-accordion__section-panel' }}">
    {% endif %}
    {% for item in items %}
      {%
        set classes = [
          'menu-item',
          item.is_expanded ? 'menu-item--expanded',
          item.is_collapsed ? 'menu-item--collapsed',
          item.in_active_trail ? 'menu-item--active-trail',
          item.is_expanded and menu_level == 0 ? 'mb-accordion__section',
        ]
      %}
      <li{{ item.attributes.addClass(classes) }}>
        {% set item_label %}
          <span class="mdc-deprecated-list-item__ripple"></span>
          <span class="mdc-deprecated-list-item__text">{{ item.title }}</span>
          {% if item.is_expanded and menu_level == 0 %}
            <span class="mdc-deprecated-list-item__meta">
              {% include "@material_base/components/01_atoms/icon.twig" with {
                data: {
                  value: 'arrow_drop_down',
                },
                settings: {
                  type: 'svg-sprite',
                }
              } %}
            </span>
          {% endif %}
        {% endset %}
        {% set item_classes = [
          'mdc-deprecated-list-item',
          item.is_expanded and menu_level == 0 ? 'mb-accordion__section-toggle',
        ] %}
        {{ link(item_label, item.url, { 'class': item_classes, 'data-mdc-auto-init': 'MDCRipple' }) }}
        {% if item.below %}
          {{ menus.menu_links(item.below, attributes, menu_level + 1) }}
        {% endif %}
      </li>
    {% endfor %}
    </ul>
  {% endif %}
{% endmacro %}