From 0e3727b97a6297ac9cdbbf3753a301c182e356d6 Mon Sep 17 00:00:00 2001
From: Hysterelius
Date: Tue, 26 Sep 2023 14:36:59 +1000
Subject: Add collapsing for sections (#148)

Add collapsing for sections---
 templates/macros/macros.html |  9 +++++
 templates/page.html          | 86 +++++++++++++++++++++++++++++++++++++-------
 2 files changed, 83 insertions(+), 12 deletions(-)

(limited to 'templates')

diff --git a/templates/macros/macros.html b/templates/macros/macros.html
index 66673d1..d5ea391 100644
--- a/templates/macros/macros.html
+++ b/templates/macros/macros.html
@@ -297,3 +297,12 @@
       </nav>
   {%- endif %}
 {%- endmacro %}
+
+{%- macro series_link(inner, page) %}
+  {%- set uglyurls = config.extra.uglyurls | default(value=false) -%}
+  {%- if inner.content == page.content %}
+      <li><a href="{{ inner.permalink | safe }}{%- if uglyurls %}index.html{%- endif %}"><b>{{ inner.title }}</b></a></li>
+    {% else %}
+      <li><a href="{{ inner.permalink | safe }}{%- if uglyurls %}index.html{%- endif %}">{{ inner.title }}</a></li>
+  {%- endif %}
+{%- endmacro %}
\ No newline at end of file
diff --git a/templates/page.html b/templates/page.html
index 6aac7e1..d7abe0b 100644
--- a/templates/page.html
+++ b/templates/page.html
@@ -63,11 +63,12 @@
         <a class="b s150" href="{{ tag.permalink | safe }}{%- if uglyurls %}index.html{%- endif %}">{{ tag.name }} ({{ parts_string }})</a>
         <ol>
         {%- for inner in tag.pages | sort(attribute="date") %}
-        {%- if inner.content == page.content %}
-        <li><a href="{{ inner.permalink | safe }}{%- if uglyurls %}index.html{%- endif %}"><b>{{ inner.title }}</b></a></li>
-        {% else %}
-        <li><a href="{{ inner.permalink | safe }}{%- if uglyurls %}index.html{%- endif %}">{{ inner.title }}</a></li>
-        {%- endif %}
+          {%- if inner.content == page.content %}
+            <li><a href="{{ inner.permalink | safe }}{%- if uglyurls %}index.html{%- endif %}"><b>{{ inner.title }}</b></a></li>
+            {%- set_global current_section_index = loop.index0 %} {# Finds the current section, needed for pagination logic later #}
+          {% else %}
+            <li><a href="{{ inner.permalink | safe }}{%- if uglyurls %}index.html{%- endif %}">{{ inner.title }}</a></li>
+          {%- endif %}
         {%- endfor %}
         </ol>
       </div>
@@ -101,17 +102,78 @@
     {%- if toc %}
 
     <div class="sblock">
-      {%- if page.extra.section %}
+      {%- if page.extra.section %} 
+      {%- set num_extra_pages = config.extra.section_items | default(value=5) %}
       <div class="blockdiv">
         <a class="b s150" href="{{ tag.permalink | safe }}{%- if uglyurls %}index.html{%- endif %}">{{ parts_string }}</a>
         <ol>
-        {%- for inner in tag.pages | sort(attribute="date") %}
-        {%- if inner.content == page.content %}
-        <li><a href="{{ inner.permalink | safe }}{%- if uglyurls %}index.html{%- endif %}"><b>{{ inner.title }}</b></a></li>
-        {% else %}
-        <li><a href="{{ inner.permalink | safe }}{%- if uglyurls %}index.html{%- endif %}">{{ inner.title }}</a></li>
+        {%- if tag.page_count > num_extra_pages and num_extra_pages > 0 %}
+          {%- set sorted_array = tag.pages | sort(attribute="date") %} 
+          {%- set num_pages = tag.page_count %}
+        
+          {# Shows the first page #}
+          {{ macros::series_link(inner=sorted_array.0, page=page) }}
+
+          {# Hides the next couple of pages if the current section is more than 3 away from start #}
+          {%- if current_section_index > 3 %}
+            <details>
+              <summary>More...</summary>
+            </details>
+            <div class="hidden_li">
+              {%- for inner in sorted_array | slice(start=1, end=(current_section_index - 2)) %}
+                <li><a href="{{ inner.permalink | safe }}{%- if uglyurls %}index.html{%- endif %}">{{ inner.title }}</a></li>
+              {%- endfor %}
+            </div>
+          {%- endif %}
+
+          {# Max(current_section_index - 2, 1) #}
+          {%- if (current_section_index - 2 ) > 1 %}
+            {%- set num = current_section_index - 2 %}
+          {%- else %}
+            {%- set num = 1 %}
+          {%- endif %}
+          
+          {# Shows two pages before current page #}
+          {%- for inner in sorted_array | slice(start=num, end=current_section_index) %}
+            <li><a href="{{ inner.permalink | safe }}{%- if uglyurls %}index.html{%- endif %}">{{ inner.title }}</a></li>
+          {%- endfor %}
+
+          {# Shows the current page #}
+          {%- if current_section_index != 0 and current_section_index != (num_pages - 1) %}
+            {{ macros::series_link(inner=sorted_array[current_section_index], page=page) }}
+          {%- endif %}
+
+          {# Min(num_pages - 1, current_section_index + 3) #}
+          {%- if (num_pages - 2 ) < (current_section_index + 3) %}
+            {%- set num = num_pages - 1 %}
+          {%- else %}
+            {%- set num = current_section_index + 3 %}
+          {%- endif %}
+
+          {%- for inner in sorted_array | slice(start=(current_section_index + 1), end=num ) %}
+            <li><a href="{{ inner.permalink | safe }}{%- if uglyurls %}index.html{%- endif %}">{{ inner.title }}</a></li>
+          {%- endfor %}
+
+          {%- if current_section_index < num_pages - 4 %}
+            <details>
+              <summary>More...</summary>
+            </details>
+            <div class="hidden_li">
+              {%- for inner in sorted_array | slice(start=(current_section_index + 3), end=(num_pages - 1)) %}
+                <li><a href="{{ inner.permalink | safe }}{%- if uglyurls %}index.html{%- endif %}">{{ inner.title }}</a></li>
+              {%- endfor %}
+            </div>
+          {%- endif %}
+        
+        {%- set last = num_pages - 1%}
+        {{ macros::series_link(inner=sorted_array[last], page=page) }}
+
+        {# If there is not more than max pages render normally #}
+        {%- else %}
+          {%- for inner in tag.pages | sort(attribute="date") %}
+            {{ macros::series_link(inner=inner, page=page) }}
+          {%- endfor %}
         {%- endif %}
-        {%- endfor %}
         </ol>
       </div>
       {%- endif %}
-- 
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