From 82e5ab9e14b81e0d21ef61f503a2b4c8638776e8 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Wed, 8 Feb 2017 08:13:43 -0500
Subject: Utilities/Sphinx: Add option for cmake.org version switch to html

Leave the option undocumented since it is not for general use.  We can
simply pass it through `SPHINX_FLAGS` when building for publication on
`cmake.org`.
---
 Utilities/Sphinx/templates/layout.html | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Utilities/Sphinx/templates/layout.html b/Utilities/Sphinx/templates/layout.html
index 177e044..be2660c 100644
--- a/Utilities/Sphinx/templates/layout.html
+++ b/Utilities/Sphinx/templates/layout.html
@@ -8,10 +8,22 @@
     <a href="https://cmake.org/">CMake</a>{{ reldelim1 }}
   </li>
   <li>
+    {%- if versionswitch is defined %}
+    <span class="version_switch">{{ release }}</span>
+    <a href="{{ pathto(master_doc) }}">{% trans %}Documentation{% endtrans %}</a>{{ reldelim1 }}
+    {%- else %}
     <a href="{{ pathto(master_doc) }}">{{ shorttitle|e }}</a>{{ reldelim1 }}
+    {%- endif %}
   </li>
 {% endblock %}
 
+{% block extrahead %}
+  {% if versionswitch is defined %}
+  <script type="text/javascript" src="{{ pathto('../version_switch.js', 1) }}"></script>
+  {% endif %}
+{{ super() }}
+{% endblock %}
+
 {# Put some context in the html title element. Workaround for #}
 {# https://bitbucket.org/birkenfeld/sphinx/issue/1492/qthelp-generate-html-title-element-should #}
 {% block htmltitle %}
-- 
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