Merge pull request #2700 from iBug:update-toc

Update allejo/jekyll-toc to v1.0.14

_includes/toc.html

@@ -1,6 +1,30 @@
 {% capture tocWorkspace %}
     {% comment %}
-        Version 1.0.8
+        Copyright (c) 2017 Vladimir "allejo" Jimenez
+
+        Permission is hereby granted, free of charge, to any person
+        obtaining a copy of this software and associated documentation
+        files (the "Software"), to deal in the Software without
+        restriction, including without limitation the rights to use,
+        copy, modify, merge, publish, distribute, sublicense, and/or sell
+        copies of the Software, and to permit persons to whom the
+        Software is furnished to do so, subject to the following
+        conditions:
+
+        The above copyright notice and this permission notice shall be
+        included in all copies or substantial portions of the Software.
+
+        THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+        EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+        OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+        NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+        HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+        WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+        FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+        OTHER DEALINGS IN THE SOFTWARE.
+    {% endcomment %}
+    {% comment %}
+        Version 1.0.14
           https://github.com/allejo/jekyll-toc
 
         "...like all things liquid - where there's a will, and ~36 hours to spare, there's usually a/some way" ~jaybe
@@ -19,8 +43,10 @@
             * h_max         (int)    :   6    - the maximum TOC header level to use; any header greater than this value will be ignored
             * ordered       (bool)   : false  - when set to true, an ordered list will be outputted instead of an unordered list
             * item_class    (string) :   ''   - add custom class(es) for each list item; has support for '%level%' placeholder, which is the current heading level
+            * submenu_class (string) :   ''   - add custom class(es) for each child group of headings; has support for '%level%' placeholder which is the current "submenu" heading level
             * baseurl       (string) :   ''   - add a base url to the TOC links for when your TOC is on another page than the actual content
             * anchor_class  (string) :   ''   - add custom class(es) for each anchor element
+            * skipNoIDs     (bool)   : false  - skip headers that do not have an `id` attribute
 
         Output:
             An ordered or unordered list representing the table of contents of a markdown block. This snippet will only
@@ -29,10 +55,12 @@
 
     {% capture my_toc %}{% endcapture %}
     {% assign orderedList = include.ordered | default: false %}
+    {% assign skipNoIDs = include.skipNoIDs | default: false %}
     {% assign minHeader = include.h_min | default: 1 %}
     {% assign maxHeader = include.h_max | default: 6 %}
     {% assign nodes = include.html | split: '<h' %}
     {% assign firstHeader = true %}
+    {% assign previousLevel = 0 %}
 
     {% capture listModifier %}{% if orderedList %}1.{% else %}-{% endif %}{% endcapture %}
 
@@ -47,12 +75,6 @@
             {% continue %}
         {% endif %}
 
-        {% if firstHeader %}
-            {% assign firstHeader = false %}
-            {% assign minHeader = headerLevel %}
-        {% endif %}
-
-        {% assign indentAmount = headerLevel | minus: minHeader %}
         {% assign _workspace = node | split: '</h' %}
 
         {% assign _idWorkspace = _workspace[0] | split: 'id="' %}
@@ -67,24 +89,57 @@
             {% continue %}
         {% endif %}
 
+        {% if firstHeader %}
+            {% assign firstHeader = false %}
+            {% assign minHeader = headerLevel %}
+        {% endif %}
+
         {% capture _hAttrToStrip %}{{ _workspace[0] | split: '>' | first }}>{% endcapture %}
         {% assign header = _workspace[0] | replace: _hAttrToStrip, '' %}
 
+        {% assign indentAmount = headerLevel | minus: minHeader %}
         {% assign space = '' %}
         {% for i in (1..indentAmount) %}
             {% assign space = space | prepend: '    ' %}
         {% endfor %}
 
-        {% unless include.item_class == blank %}
+        {% if include.item_class and include.item_class != blank %}
             {% capture listItemClass %}{:.{{ include.item_class | replace: '%level%', headerLevel }}}{% endcapture %}
-        {% endunless %}
+        {% endif %}
+
+        {% capture anchor_body %}{% if include.sanitize %}{{ header | strip_html }}{% else %}{{ header }}{% endif %}{% endcapture %}
+        {% capture anchor_body %}{{ anchor_body | replace: "|", "\|" }}{% endcapture %}
+
+        {% if html_id %}
+            {% capture list_item %}[{{ anchor_body }}]({% if include.baseurl %}{{ include.baseurl }}{% endif %}#{{ html_id }}){% endcapture %}
+        {% elsif skipNoIDs == true %}
+            {% continue %}
+        {% else %}
+            {% capture list_item %}{{ anchor_body }}{% endcapture %}
+        {% endif %}
+
+        <!--
+        If we have a submenu class and we're unindenting, then we need to add a "closing" class to this group of bullet
+        points
+        -->
+        {% if include.submenu_class and previousLevel > indentAmount %}
+            <!--
+            `space` is the current indentation, so we if want to close off the previous grouping, we need to add one
+            more level of indentation 
+            -->
+            {% assign submenuIndentation = space | prepend: '    ' %}
 
-        {% capture heading_body %}{% if include.sanitize %}{{ header | strip_html }}{% else %}{{ header }}{% endif %}{% endcapture %}
             {% capture my_toc %}{{ my_toc }}
-{{ space }}{{ listModifier }} {{ listItemClass }} [{{ heading_body | replace: "|", "\|" }}]({% if include.baseurl %}{{ include.baseurl }}{% endif %}#{{ html_id }}){% if include.anchor_class %}{:.{{ include.anchor_class }}}{% endif %}{% endcapture %}
+{{ submenuIndentation }}{:.{{ include.submenu_class | replace: '%level%', previousLevel }}}{% endcapture %}
+        {% endif %}
+
+        {% capture my_toc %}{{ my_toc }}
+{{ space }}{{ listModifier }} {{ listItemClass }} {{ list_item }}{% if include.anchor_class %}{:.{{ include.anchor_class }}}{% endif %}{% endcapture %}
+
+        {% assign previousLevel = indentAmount %}
     {% endfor %}
 
-    {% if include.class %}
+    {% if include.class and include.class != blank %}
         {% capture my_toc %}{:.{{ include.class }}}
 {{ my_toc | lstrip }}{% endcapture %}
     {% endif %}
@@ -93,4 +148,23 @@
         {% capture my_toc %}{: #{{ include.id }}}
 {{ my_toc | lstrip }}{% endcapture %}
     {% endif %}
+
+    <!--
+    If we have a submenu class, we need to close off all the remaining list item groups so that submenu classes are
+    applied correctly to them
+    -->
+    {% if include.submenu_class != blank %}
+        <!-- The last level of indentation that we were at, we need to work backwards from there closing each group -->
+        {% for i in (1..previousLevel) %}
+            {% assign lvl = previousLevel | plus: 1 | minus: i %} <!-- Invert the indent level based on `i` -->
+            {% assign closingSpace = '' %}
+
+            {% for i in (1..lvl) %}
+                {% assign closingSpace = closingSpace | prepend: '    ' %}
+            {% endfor %}
+
+            {% capture my_toc %}{{ my_toc }}
+{{ closingSpace }}{:.{{ include.submenu_class | replace: '%level%', lvl }}}{% endcapture %}
+        {% endfor %}
+    {% endif %}
 {% endcapture %}{% assign tocWorkspace = '' %}{{ my_toc | markdownify | strip }}