bpo-34733: Return of the docs search bar (GH-9431)

Partially revert changes to Doc/tools/templates/layout.html
accidentally committed in 512d7101098b971837cbb406942215244f636547.

1 files changed, 108 insertions, 16 deletions

diff --git a/Doc/tools/templates/layout.html b/Doc/tools/templates/layout.html
index c399224561..8cf903dec6 100644
--- a/Doc/tools/templates/layout.html
+++ b/Doc/tools/templates/layout.html
@@ -1,27 +1,106 @@
 {% extends "!layout.html" %}
-
 {% block rootrellink %}
-{{ super() }}
-    <li>
-      {%- if switchers is defined %}
-      <span class="language_switcher_placeholder">{{ language or 'en' }}</span>
-      <span class="version_switcher_placeholder">{{ release }}</span>
-      <a href="{{ pathto('index') }}">{% trans %}Documentation {% endtrans %}</a>{{ reldelim1 }}
-      {%- else %}
-      <a href="{{ pathto('index') }}">{{ shorttitle }}</a>{{ reldelim1 }}
-      {%- endif %}
+        <li><img src="{{ pathto('_static/py.png', 1) }}" alt=""
+                 style="vertical-align: middle; margin-top: -1px"/></li>
+        <li><a href="https://www.python.org/">Python</a>{{ reldelim1 }}</li>
+        <li>
+          {%- if switchers is defined %}
+          <span class="language_switcher_placeholder">{{ language or 'en' }}</span>
+          <span class="version_switcher_placeholder">{{ release }}</span>
+          <a href="{{ pathto('index') }}">{% trans %}Documentation {% endtrans %}</a>{{ reldelim1 }}
+          {%- else %}
+          <a href="{{ pathto('index') }}">{{ shorttitle }}</a>{{ reldelim1 }}
+          {%- endif %}
+        </li>
+{% endblock %}
+{%- macro searchbox() %}
+{# modified from sphinx/themes/basic/searchbox.html #}
+    {%- if builder != "htmlhelp" %}
+    <div class="inline-search" style="display: none" role="search">
+        <form class="inline-search" action="{{ pathto('search') }}" method="get">
+          <input placeholder="{{ _('Quick search') }}" type="text" name="q" />
+          <input type="submit" value="{{ _('Go') }}" />
+          <input type="hidden" name="check_keywords" value="yes" />
+          <input type="hidden" name="area" value="default" />
+        </form>
+    </div>
+    <script type="text/javascript">$('.inline-search').show(0);</script>
+    {%- endif %}
+{%- endmacro %}
+{% block relbar1 %} {% if builder != 'qthelp' %} {{ relbar() }} {% endif %} {% endblock %}
+{% block relbar2 %} {% if builder != 'qthelp' %} {{ relbar() }} {% endif %} {% endblock %}
+{% block relbaritems %}
+    {%- if pagename != "search" and builder != "singlehtml" and builder != "htmlhelp" %}
+    <li class="right">
+        {{ searchbox() }}
+        {{ reldelim2 }}
     </li>
+    {%- endif %}
 {% endblock %}
-
 {% block extrahead %}
+    <link rel="shortcut icon" type="image/png" href="{{ pathto('_static/py.png', 1) }}" />
     <link rel="canonical" href="https://docs.python.org/3/{{pagename}}.html" />
     {% if builder != "htmlhelp" %}
-      {% if switchers is defined and not embedded %}
-      <script type="text/javascript" src="{{ pathto('_static/switchers.js', 1) }}"></script>{% endif %}
-      {% if pagename == 'whatsnew/changelog' and not embedded %}
-      <script type="text/javascript" src="{{ pathto('_static/changelog_search.js', 1) }}"></script>{% endif %}
-    {% endif %}
+    {% if not embedded %}<script type="text/javascript" src="{{ pathto('_static/copybutton.js', 1) }}"></script>{% endif %}
+    {% if switchers is defined and not embedded %}<script type="text/javascript" src="{{ pathto('_static/switchers.js', 1) }}"></script>{% endif %}
+    {% if pagename == 'whatsnew/changelog' and not embedded %}
+    <script type="text/javascript">
+      $(document).ready(function() {
+          // add the search form and bind the events
+          $('h1').after([
+            '<p>Filter entries by content:',
+            '<input type="text" value="" id="searchbox" style="width: 50%">',
+            '<input type="submit" id="searchbox-submit" value="Filter"></p>'
+          ].join('\n'));
 
+          function dofilter() {
+              try {
+                  var query = new RegExp($('#searchbox').val(), 'i');
+              }
+              catch (e) {
+                  return; // not a valid regex (yet)
+              }
+              // find headers for the versions (What's new in Python X.Y.Z?)
+              $('#changelog h2').each(function(index1, h2) {
+                  var h2_parent = $(h2).parent();
+                  var sections_found = 0;
+                  // find headers for the sections (Core, Library, etc.)
+                  h2_parent.find('h3').each(function(index2, h3) {
+                      var h3_parent = $(h3).parent();
+                      var entries_found = 0;
+                      // find all the entries
+                      h3_parent.find('li').each(function(index3, li) {
+                          var li = $(li);
+                          // check if the query matches the entry
+                          if (query.test(li.text())) {
+                              li.show();
+                              entries_found++;
+                          }
+                          else {
+                              li.hide();
+                          }
+                      });
+                      // if there are entries, show the section, otherwise hide it
+                      if (entries_found > 0) {
+                          h3_parent.show();
+                          sections_found++;
+                      }
+                      else {
+                          h3_parent.hide();
+                      }
+                  });
+                  if (sections_found > 0)
+                      h2_parent.show();
+                  else
+                      h2_parent.hide();
+              });
+          }
+          $('#searchbox').keyup(dofilter);
+          $('#searchbox-submit').click(dofilter);
+      });
+    </script>
+    {% endif %}
+    {% endif %}
     {# custom CSS; used in asyncio docs! #}
     <style>
       @media only screen {{ "{" }}
@@ -32,3 +111,16 @@
     </style>
 {{ super() }}
 {% endblock %}
+{% block footer %}
+    <div class="footer">
+    &copy; <a href="{{ pathto('copyright') }}">{% trans %}Copyright{% endtrans %}</a> {{ copyright|e }}.
+    <br />
+    {% trans %}The Python Software Foundation is a non-profit corporation.{% endtrans %}
+    <a href="https://www.python.org/psf/donations/">{% trans %}Please donate.{% endtrans %}</a>
+    <br />
+    {% trans last_updated=last_updated|e %}Last updated on {{ last_updated }}.{% endtrans %}
+    {% trans pathto_bugs=pathto('bugs') %}<a href="{{ pathto_bugs }}">Found a bug</a>?{% endtrans %}
+    <br />
+    {% trans sphinx_version=sphinx_version|e %}Created using <a href="http://sphinx.pocoo.org/">Sphinx</a> {{ sphinx_version }}.{% endtrans %}
+    </div>
+{% endblock %}