docs/_includes/navbar.html

<!--
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements.  See the NOTICE file
distributed with this work for additional information
regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
under the License.
-->
{% capture quickstart %}{{site.baseurl}}/quickstart{% endcapture %}
{% capture setup %}{{site.baseurl}}/setup{% endcapture %}
{% capture apis %}{{site.baseurl}}/apis{% endcapture %}
{% capture libs %}{{site.baseurl}}/libs{% endcapture %}
{% capture internals %}{{site.baseurl}}/internals{% endcapture %}
    <!-- Top navbar. -->
    <nav class="navbar navbar-default navbar-fixed-top">
      <div class="container">
        <!-- The logo. -->
        <div class="navbar-header">
          <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
          </button>
          <div class="navbar-logo">
            <a href="http://flink.apache.org"><img alt="Apache Flink" src="{{ site.baseurl }}/page/img/navbar-brand-logo.jpg"></a>
          </div>
        </div><!-- /.navbar-header -->

        <!-- The navigation links. -->
        <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
          <ul class="nav navbar-nav">
            <li class="hidden-sm {% if page.url == '/' %}active{% endif %}"><a href="{{ site.baseurl}}/">Documentation {{ site.version_short }}</a></li>

            <!-- Quickstart -->
            <li class="dropdown{% if page.url contains '/quickstart/' %} active{% endif %}">
              <a href="{{ quickstart }}" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Quickstart <span class="caret"></span></a>
              <ul class="dropdown-menu" role="menu">
                {% assign quickstart_group = (site.pages | where: "top-nav-group" , "quickstart" | sort: "top-nav-pos") %}
                {% for quickstart_page in quickstart_group %}
                <li class="{% if page.url contains quickstart_page.url %}active{% endif %}"><a href="{{ site.baseurl }}{{ quickstart_page.url }}">{% if quickstart_page.top-nav-title %}{{ quickstart_page.top-nav-title }}{% else %}{{ quickstart_page.title }}{% endif %}</a></li>
                {% endfor %}
              </ul>
            </li>

            <!-- Setup -->
            <li class="dropdown{% if page.url contains '/setup/' %} active{% endif %}">
              <a href="{{ setup }}" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Setup <span class="caret"></span></a>
              <ul class="dropdown-menu" role="menu">
                {% assign setup_group = (site.pages | where: "top-nav-group" , "setup" | sort: "top-nav-pos") %}
                {% for setup_group_page in setup_group %}
                <li class="{% if page.url contains setup_group_page.url %}active{% endif %}"><a href="{{ site.baseurl }}{{ setup_group_page.url }}">{% if setup_group_page.top-nav-title %}{{ setup_group_page.top-nav-title }}{% else %}{{ setup_group_page.title }}{% endif %}</a></li>
                {% endfor %}

                <li class="divider"></li>
                <li role="presentation" class="dropdown-header"><strong>Deployment</strong></li>
                {% assign deployment_group = (site.pages | where: "top-nav-group" , "deployment" | sort: "top-nav-pos") %}
                {% for deployment_group_page in deployment_group %}
                <li class="{% if page.url contains deployment_group_page.url %}active{% endif %}"><a href="{{ site.baseurl }}{{ deployment_group_page.url }}">{% if deployment_group_page.top-nav-title %}{{ deployment_group_page.top-nav-title }}{% else %}{{ deployment_group_page.title }}{% endif %}</a></li>
                {% endfor %}
              </ul>
            </li>

            <!-- Programming Guides -->
            <li class="dropdown{% unless page.url contains '/libs/' %}{% if page.url contains '/apis/' %} active{% endif %}{% endunless %}">
              <a href="{{ apis }}" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Programming Guides <span class="caret"></span></a>
              <ul class="dropdown-menu" role="menu">
                {% assign apis_group = (site.pages | where: "top-nav-group" , "apis" | sort: "top-nav-pos") %}
                {% for apis_group_page in apis_group %}
                <li class="{% if page.url contains apis_group_page.url %}active{% endif %}"><a href="{{ site.baseurl }}{{ apis_group_page.url }}">{% if apis_group_page.top-nav-title %}{{ apis_group_page.top-nav-title }}{% else %}{{ apis_group_page.title }}{% endif %}</a></li>
                {% endfor %}
              </ul>
            </li>

            <!-- Libraries -->
            <li class="dropdown{% if page.url contains '/libs/' %} active{% endif %}">
              <a href="{{ libs }}" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Libraries <span class="caret"></span></a>
                <ul class="dropdown-menu" role="menu">
                  {% assign libs_group = (site.pages | where: "top-nav-group" , "libs" | sort: "top-nav-pos") %}
                  {% for libs_page in libs_group %}
                  <li class="{% if page.url contains libs_page.url %}active{% endif %}"><a href="{{ site.baseurl }}{{ libs_page.url }}">{% if libs_page.top-nav-title %}{{ libs_page.top-nav-title }}{% else %}{{ libs_page.title }}{% endif %}</a></li>
                  {% endfor %}
              </ul>
            </li>

            <!-- Internals -->
            <li class="dropdown{% if page.url contains '/internals/' %} active{% endif %}">
              <a href="{{ internals }}" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Internals <span class="caret"></span></a>
              <ul class="dropdown-menu" role="menu">
                <li role="presentation" class="dropdown-header"><strong>Contribute</strong></li>
                <li><a href="http://flink.apache.org/how-to-contribute.html"><small><span class="glyphicon glyphicon-new-window"></span></small> How to Contribute</a></li>
                <li><a href="http://flink.apache.org/contribute-code.html#coding-guidelines"><small><span class="glyphicon glyphicon-new-window"></span></small> Coding Guidelines</a></li>
                {% assign internals_group = (site.pages | where: "top-nav-group" , "internals" | sort: "top-nav-pos") %}
                {% for internals_page in internals_group %}
                <li class="{% if page.url contains internals_page.url %}active{% endif %}"><a href="{{ site.baseurl }}{{ internals_page.url }}">{% if internals_page.top-nav-title %}{{ internals_page.top-nav-title }}{% else %}{{ internals_page.title }}{% endif %}</a></li>
                {% endfor %}
              </ul>
            </li>
          </ul>
          <form class="navbar-form navbar-right hidden-sm hidden-md" role="search" action="{{site.baseurl}}/search-results.html">
            <div class="form-group">
              <input type="text" class="form-control" size="16px" name="q" placeholder="Search all pages">
            </div>
            <button type="submit" class="btn btn-default">Search</button>
          </form>
        </div><!-- /.navbar-collapse -->
      </div><!-- /.container -->
    </nav>