Hierarchical navigation menu

1 files changed, 53 insertions, 0 deletions

diff --git a/templates/_nav.html b/templates/_nav.html
new file mode 100644
index 0000000..92ed4c5
--- /dev/null
+++ b/templates/_nav.html
@@ -0,0 +1,53 @@
+{% macro navsection(hierarchy, level, current) %}
+  {% set sec = hierarchy | nth(n=level) %}
+  {% set sec = get_section(path=sec) %}
+  {% set maxlevel = hierarchy | length %}
+
+  {% if sec.subsections %}
+    {% for s in sec.subsections %}
+      {% set p = get_section(path=s) %}
+      <div class="toc-item">
+        {% if p.path == current.path %}
+          <a class="subtext" href="{{ p.permalink | safe}}">⯆ <b>{{ p.title }}</b></a>
+        {% elif hierarchy is containing(s) %}
+          <a class="subtext" href="{{ p.permalink | safe}}">⯆ {{ p.title }}</a>
+        {% else %}
+          <a class="subtext" href="{{ p.permalink | safe}}">⯈ {{ p.title }}</a>
+        {% endif %}
+        {% if hierarchy is containing(s) or current.path == p.path %}
+          {% if level + 1 < maxlevel %}
+            {{ nav::navsection(hierarchy=hierarchy,level=level + 1,current=current) }}
+          {% endif %}
+        {% endif %}
+      </div>
+      {% endfor %}
+  {% endif %}
+
+  {% if sec.pages %}
+    {% for p in sec.pages %}
+      <div class="toc-item">
+        {% if p.path == current.path %}
+        <a class="subtext" href="{{p.permalink | safe}}">&nbsp;&nbsp;<b>{{ p.title }}</b></a>
+        {% else %}
+          <a class="subtext" href="{{p.permalink | safe}}">&nbsp;&nbsp;{{ p.title }}</a>
+        {% endif %}
+      </div>
+    {% endfor %}
+  {% endif %}
+{% endmacro navsection %}
+
+{% macro navmenu(current) %}
+  {% if current.ancestors %}
+    {% set hierarchy = current.ancestors | concat(with=current.relative_path) %}
+  {% else %}
+    {% set hierarchy = [current.relative_path] %}
+  {% endif %}
+
+  {% set root_path = hierarchy | nth(n=0) %}
+  {% set root = get_section(path=root_path) %}
+  <div class="toc-item toc-section">
+    <a class="subtext" href="{{root.permalink | safe}}">{{ root.title }}</a>
+  </div>
+
+  {{ nav::navsection(hierarchy=hierarchy,level=0,current=current) }}
+{% endmacro %}