Show breadcrumb on top of a class document

Author: unasuke

lib/rdoc/generator/template/darkfish/class.rhtml

@@ -17,6 +17,20 @@
   <%= render '_footer.rhtml' %>
 </nav>
 
+<nav role="navigation" aria-label="breadcrumb" class="breadcrumb">
+  <ol>
+    <% breadcrumb.each do |namespace| %>
+    <li>
+      <% if namespace[:self] %>
+      <span><%= namespace[:name] %></span>
+      <% else %>
+      <a href="<%= namespace[:path] %>"><%= namespace[:name] %></a><span>::</span>
+      <% end %>
+    </li>
+    <% end %>
+  </ol>
+</nav>
+
 <main role="main" aria-labelledby="<%=h klass.aref %>">
   <h1 id="<%=h klass.aref %>" class="anchor-link <%= klass.type %>">
     <%= klass.type %> <%= klass.full_name %>

lib/rdoc/generator/template/darkfish/css/rdoc.css

@@ -199,6 +199,28 @@ nav h3,
   font-size: 1em;
 }
 
+nav.breadcrumb {
+  display: block;
+  float: unset;
+  width: unset;
+  height: unset;
+  border: none;
+  position: unset;
+  top: unset;
+  padding-top: 10px;
+  padding-left: 20px;
+  margin-bottom: 1em;
+}
+
+nav.breadcrumb ol {
+  display: inline-block;
+}
+
+nav.breadcrumb li {
+  display: inline-block;
+  font-size: 125%;
+}
+
 nav ul,
 nav dl,
 nav p {