From cf4a7f2e2f763167fe088258eee7950b056167c0 Mon Sep 17 00:00:00 2001
From: Cotes Chung <11371340+cotes2020@users.noreply.github.com>
Date: Tue, 8 Oct 2019 19:58:17 +0800
Subject: [PATCH] Improved the TOC.

Automatically hide TOC titles
---
 _layouts/post.html        |  3 ++-
 assets/js/_src/toc.js     | 13 +++++++++++++
 assets/js/dist/toc.min.js |  1 +
 3 files changed, 16 insertions(+), 1 deletion(-)
 create mode 100644 assets/js/_src/toc.js
 create mode 100644 assets/js/dist/toc.min.js

diff --git a/_layouts/post.html b/_layouts/post.html
index 83e4230..7398f4e 100644
--- a/_layouts/post.html
+++ b/_layouts/post.html
@@ -100,12 +100,13 @@ layout: default
   {% if site.toc and page.toc %}
   <div id="toc-wrap" class="topbar-down pr-4">
     <h3 data-toc-skip class="pl-3 pt-2">
-      {{ site.data.label.panel.toc }}
+      {{- site.data.label.panel.toc -}}
     </h3>
     <nav id="toc" data-toggle="toc"></nav>
   </div>
   <link rel="stylesheet" href="{{ site.baseurl }}/assets/lib/bootstrap-toc-1.0.1/bootstrap-toc.min.css" />
   <script src="{{ site.baseurl }}/assets/lib/bootstrap-toc-1.0.1/bootstrap-toc.min.js"></script>
+  <script src="{{ site.baseurl }}/assets/js/dist/toc.min.js"></script>
   {% endif %}
 </div> <!-- #post-panel -->
 
diff --git a/assets/js/_src/toc.js b/assets/js/_src/toc.js
new file mode 100644
index 0000000..513e99a
--- /dev/null
+++ b/assets/js/_src/toc.js
@@ -0,0 +1,13 @@
+/*
+ * Hide the empty ToC in posts.
+ *
+ * © 2019 Cotes Chung
+ * MIT Licensed
+ */
+
+$(function() {
+  // Hide ToC title if there is no head
+  if ($("#toc-wrap>nav#toc>ul>li").length == 0) {
+    $("#toc-wrap>h3").addClass("hidden");
+  }
+});
\ No newline at end of file
diff --git a/assets/js/dist/toc.min.js b/assets/js/dist/toc.min.js
new file mode 100644
index 0000000..c158e79
--- /dev/null
+++ b/assets/js/dist/toc.min.js
@@ -0,0 +1 @@
+$(function(){if($("#toc-wrap>nav#toc>ul>li").length==0){$("#toc-wrap>h3").addClass("hidden")}});
\ No newline at end of file