<div class="navbar navbar-default navbar-fixed-top" role="navigation">
    <div class="container">

        <!-- Collapsed navigation -->
        <div class="navbar-header">
            {%- if nav|length>1 or (page and (page.next_page or page.previous_page)) or config.repo_url %}
            <!-- Expander button -->
            <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
                <span class="sr-only">Toggle navigation</span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
            </button>
            {%- endif %}

          {%- block site_name %}
            <a class="navbar-brand" href="{{ nav.homepage.url }}">{{ config.site_name }}</a>
          {%- endblock %}
        </div>

        <!-- Expanded navigation -->
        <div class="navbar-collapse collapse">
          {%- block site_nav %}
            {%- if nav|length>1 %}
                <!-- Main navigation -->
                <ul class="nav navbar-nav">
                {%- for nav_item in nav %}
                {%- if nav_item.children %}
                    <li class="dropdown{% if nav_item.active %} active{% endif %}">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">{{ nav_item.title }} <b class="caret"></b></a>
                        <ul class="dropdown-menu">
                        {%- for nav_item in nav_item.children %}
                            {% include "nav-sub.html" %}
                        {%- endfor %}
                        </ul>
                    </li>
                {%- else %}
                    <li {% if nav_item.active %}class="active"{% endif %}>
                        <a href="{{ nav_item.url }}">{{ nav_item.title }}</a>
                    </li>
                {%- endif %}
                {%- endfor %}
                </ul>
            {%- endif %}
          {%- endblock %}

            <ul class="nav navbar-nav navbar-right">
              {%- block search_button %}
                <li>
                    <a href="#" data-toggle="modal" data-target="#mkdocs_search_modal">
                        <i class="fa fa-search"></i> Search
                    </a>
                </li>
              {%- endblock %}

              {%- block next_prev %}
                {%- if page and (page.next_page or page.previous_page) %}
                    <li {% if not page.previous_page %}class="disabled"{% endif %}>
                        <a rel="next" {% if page.previous_page %}href="{{ page.previous_page.url }}"{% endif %}>
                            <i class="fa fa-arrow-left"></i> Previous
                        </a>
                    </li>
                    <li {% if not page.next_page %}class="disabled"{% endif %}>
                        <a rel="prev" {% if page.next_page %}href="{{ page.next_page.url }}"{% endif %}>
                            Next <i class="fa fa-arrow-right"></i>
                        </a>
                    </li>
                {%- endif %}
              {%- endblock %}

              {%- block repo %}
                {%- if config.repo_url %}
                    <li>
                        <a href="{{ config.repo_url }}">
                            {%- if config.repo_name == 'GitHub' %}
                                <i class="fa fa-github"></i>
                            {%- elif config.repo_name == 'Bitbucket' -%}
                                <i class="fa fa-bitbucket"></i>
                            {%- endif -%}
                            {{ config.repo_name }}
                        </a>
                    </li>
                {%- endif %}
              {%- endblock %}
            </ul>
        </div>
    </div>
</div>
