Merge pull request #528 from JiangTJ/toc-max-depth

Add toc max_depth support

Author: jiangtj

_config.yml

@@ -222,12 +222,12 @@ avatar:
 # Table Of Contents in the Sidebar
 toc:
   enable: true
-
   # Automatically add list number to toc.
   number: true
-
   # If true, all words will placed on next lines if header width longer then sidebar width.
   wrap: false
+  # Maximum heading depth of generated toc. You can set it in one post through `toc_max_depth` var.
+  max_depth: 6
 
 sidebar:
   # Sidebar Position, available value: left | right (only for Pisces | Gemini).

layout/_macro/sidebar.swig

@@ -157,11 +157,12 @@
         <div class="post-toc-wrap motion-element sidebar-panel sidebar-panel-active">
           <div class="post-toc">
 
-            {% if page.toc_number === undefined %}
-              {% set toc = toc(page.content, { "class": "nav", list_number: theme.toc.number }) %}
-            {% else %}
-              {% set toc = toc(page.content, { "class": "nav", list_number: page.toc_number }) %}
+            {% set next_toc_number = theme.toc.number %}
+            {% if page.toc_number !== undefined %}
+              {% set next_toc_number = page.toc_number %}
             {% endif %}
+            {% set next_toc_max_depth = page.toc_max_depth|default(theme.toc.max_depth)|default(6) %}
+            {% set toc = toc(page.content, { "class": "nav", list_number: next_toc_number, max_depth: next_toc_max_depth }) %}
 
             {% if toc.length <= 1 %}
               <p class="post-toc-empty">{{ __('post.toc_empty') }}</p>