added an option to set the TOC depth directly inside the [toc] tag

Signed-off-by: Gereon Dusella <git@gereondusella.de>

Author: zergar

public/js/extra.js

@@ -1015,14 +1015,19 @@ export function renderTOC (view) {
     target.html('')
     /* eslint-disable no-unused-vars */
 
+    const specificDepth = parseInt(toc.data('toc-depth'))
+
     var tocOptions = md.meta.toc || {}
-    var maxLevel = (typeof tocOptions.maxLevel === 'number' && tocOptions.maxLevel > 0) ? tocOptions.maxLevel : window.defaultTocDepth
+    var yamlMaxDepth = (typeof tocOptions.maxLevel === 'number' && tocOptions.maxLevel > 0) ? tocOptions.maxLevel : window.defaultTocDepth
+
+    var maxLevel = specificDepth || yamlMaxDepth
 
     const TOC = new window.Toc('doc', {
       level: maxLevel,
       top: -1,
       class: 'toc',
       targetId: id,
+      data: { tocDepth: specificDepth },
       process: getHeaderContent
     })
     /* eslint-enable no-unused-vars */
@@ -1268,9 +1273,12 @@ const gistPlugin = new Plugin(
 // TOC
 const tocPlugin = new Plugin(
   // regexp to match
-  /^\[TOC\]$/i,
+  /^\[TOC(|\s*maxLevel=\d+?)\]$/i,
 
-  (match, utils) => '<div class="toc"></div>'
+  (match, utils) => {
+    const tocDepth = match[1].split(/[?&=]+/)[1]
+    return `<div class="toc" data-toc-depth="${tocDepth}"></div>`
+  }
 )
 // slideshare
 const slidesharePlugin = new Plugin(

public/vendor/md-toc.js

@@ -2,6 +2,8 @@
 /**
  * md-toc.js v1.0.2
  * https://github.com/yijian166/md-toc.js
+ *
+ * Adapted to accept data attributes
  */
 
 (function (window) {
@@ -15,6 +17,7 @@
     this.tocTop = parseInt(options.top) || 0
     this.elChilds = this.el.children
     this.process = options['process']
+    this.data = options.data || {}
     if (!this.elChilds.length) return
     this._init()
   }
@@ -123,6 +126,9 @@
     this.toc = document.createElement('div')
     this.toc.innerHTML = this.tocContent
     this.toc.setAttribute('class', this.tocClass)
+    if (this.data.tocDepth) {
+      this.toc.dataset.tocDepth = this.data.tocDepth
+    }
     if (!this.options.targetId) {
       this.el.appendChild(this.toc)
     } else {