{% comment %}
<!-- Based on: MaterialDocs https://github.com/chromatical/jekyll-materialdocs  -->
<!-- Copyright (c) 2017 James King -->
<!-- MIT License https://opensource.org/licenses/MIT -->
{% endcomment %}
{% assign sorted_pages = site.pages | sort: 'weight' %}
{% if site.data.nav %}
  {% assign sorted_pages = sorted_pages | concat: site.data.nav | sort: 'weight' %}
{% endif %}
{% for node in sorted_pages %}
  {% if node.menu != false and node.weight != nil %}
    {% if node.menu or node.title %}
      {% unless node.parent %}
        {% if node.url != false %}
          <a class="mdl-navigation__link parent{% if node.url == page.url or page.parent and page.parent == node.path %} is-active{% endif %}" href="{{ node.url | absolute_url }}"{% if node.tab %} target="_blank"{% endif %}>{% if node.menu %}{{ node.menu }}{% else %}{{ node.title }}{% endif %}</a>
        {% else %}
          <span class="mdl-navigation__link parent{% if node.url == page.url or page.parent and page.parent == node.path %} is-active{% endif %}">{% if node.menu %}{{ node.menu }}{% else %}{{ node.title }}{% endif %}</span>
        {% endif %}
        {% if site.menu_style != 'dropdown' or node.url == page.url or page.parent and page.parent == node.path %}
          {% for child in sorted_pages %}
            {% if child.menu != false %}
              {% if child.menu or child.title %}
                {% if child.parent %}
                  {% if child.parent == node.path or child.parent == node.id %}
                    {% if child.url != false %}
                      <a class="mdl-navigation__link child{% if child.url == page.url %} is-active{% endif %}" href="{{ child.url | absolute_url }}"{% if child.tab %} target="_blank"{% endif %}>{% if child.menu %}{{ child.menu }}{% else %}{{ child.title }}{% endif %}{% if child.tab %}
                        <i class="material-icons">open_in_new</i>{% endif %}</a>
                    {% else %}
                      <span class="mdl-navigation__link child{% if child.url == page.url %} is-active{% endif %}">{% if child.menu %}{{ child.menu }}{% else %}{{ child.title }}{% endif %}</span>
                    {% endif %}
                  {% endif %}
                {% endif %}
              {% endif %}
            {% endif %}
          {% endfor %}
        {% endif %}
      {% endunless %}
    {% endif %}
  {% endif %}
{% endfor %}