#52, Allow to set max showed levels of ToC. e.g. BookToC=3

README.md

@@ -15,6 +15,10 @@
 - [Shortcodes](#shortcodes)
 - [Contributing](#contributing)
 
+## Breaking changes
+
+> ⚠️ At the moment theme is under development, breaking changes might happen.
+
 ## Features
 
 - Clean simple design
@@ -123,9 +127,10 @@ enableGitInfo = true
 disableKinds = ['taxonomy', 'taxonomyTerm']
 
 [params]
-# (Optional, default true) Show or hide table of contents globally
+# (Optional, default 6) Set how many table of contents levels to be showed on page.
+# Use false to hide ToC, note that 0 will default to 6 (https://gohugo.io/functions/default/)
 # You can also specify this parameter per page in front matter
-BookShowToC = true
+BookToC = 3
 
 # (Optional, default none) Set leaf bundle to render as side menu
 # When not specified file structure and weights will be used
@@ -174,8 +179,8 @@ bookFlatSection = true
 # (Optional) Set true to hide page or section from side menu (if BookMenuBundle not set)
 bookHidden = true
 
-# (Optional) Set true to hide table of contents, overrides global value
-bookShowToC = false
+# (Optional) Set how many levels of ToC to show. use 'false' to hide ToC completely
+bookToC = 3
 ```
 
 ### Partials
@@ -235,7 +240,7 @@ Organize text in 2 or more columns to use space efficiently.
 # Mid Content Lorem markdownum insigne... <--->
 <!-- magic sparator, between columns -->
 
-# Right Content Lorem markdownum insigne... 
+# Right Content Lorem markdownum insigne...
 {{< /columns >}}
 ```
 

assets/book.scss

@@ -147,6 +147,16 @@ ul.pagination {
   nav > ul > li:first-child {
     margin-top: 0;
   }
+
+  // Classes to hide nested levels of ToC (can be replaced by @for, but it's more clear like this)
+  &.level-1 ul ul,
+  &.level-2 ul ul ul,
+  &.level-3 ul ul ul ul,
+  &.level-4 ul ul ul ul ul,
+  &.level-5 ul ul ul ul ul ul,
+  &.level-6 ul ul ul ul ul ul ul {
+    display: none;
+  }
 }
 
 .book-footer {

exampleSite/config.toml

@@ -15,9 +15,10 @@ enableGitInfo = true
 pygmentsCodeFences = true
 
 [params]
-  # (Optional, default true) Show or hide table of contents globally
+  # (Optional, default 6) Set how many table of contents levels to be showed on page.
+  # Use false to hide ToC, note that 0 will default to 6 (https://gohugo.io/functions/default/)
   # You can also specify this parameter per page in front matter
-  BookShowToC = true
+  BookToC = 3
 
   # (Optional, default none) Set leaf bundle to render as side menu
   # When not specified file structure and weights will be used

exampleSite/config.yaml

@@ -15,9 +15,10 @@ enableGitInfo: true
 pygmentsCodeFences: true
 
 params:
-  # (Optional, default true) Show or hide table of contents globally
+  # (Optional, default 6) Set how many table of contents levels to be showed on page.
+  # Use false/off to hide ToC, note that 0 will default to 6 (https://gohugo.io/functions/default/)
   # You can also specify this parameter per page in front matter
-  BookShowToC: true
+  BookToC: 3
 
   # (Optional, default none) Set leaf bundle to render as side menu
   # When not specified file structure and weights will be used

exampleSite/resources/_gen/assets/scss/book.scss_48b060fe05b0a273d182ef83c0605941.json

@@ -1 +1 @@
-{"Target":"book.min.1009ab9f4daf8375016f8f76fc100311154512dbc6cc21faa1282132e83dad16.css","MediaType":"text/css","Data":{"Integrity":"sha256-EAmrn02vg3UBb492/BADERVFEtvGzCH6oSghMug9rRY="}}
+{"Target":"book.min.3c69b4506bc4a8da260ab28ed0c14019a49435aed9fd20517f353987fa0f60ec.css","MediaType":"text/css","Data":{"Integrity":"sha256-PGm0UGvEqNomCrKO0MFAGaSUNa7Z/SBRfzU5h/oPYOw="}}

layouts/partials/docs/menu-filetree.html

@@ -23,7 +23,7 @@
 
 {{ define "book-section" }}
 {{ with .Section }}
-  <li {{ if .Params.bookFlatSection}} class="book-section-flat" {{ end }}>
+  <li {{ if .Params.BookFlatSection}} class="book-section-flat" {{ end }}>
     {{ if .Content }}
       {{ template "book-page-link" (dict "Page" . "CurrentPage" $.CurrentPage) }}
     {{ else }}

layouts/partials/docs/menu.html

@@ -1,4 +1,4 @@
-<nav role="navigation">
+<nav>
 {{ partial "docs/brand" . }}
 {{ partial "docs/inject/menu-before" . }}
 

layouts/partials/docs/toc.html

@@ -1,6 +1,6 @@
-{{ $showToC := default (default true .Site.Params.BookShowToC) .Params.bookshowtoc }}
-  {{ if and ($showToC) (.Page.TableOfContents) }}
-  <aside class="book-toc fixed">
+{{ $tocLevels := default (default 6 .Site.Params.BookToC) .Params.BookToC }}
+{{ if and $tocLevels .Page.TableOfContents }}
+  <aside class="book-toc level-{{$tocLevels}} fixed">
     {{ .Page.TableOfContents }}
   </aside>
 {{ end }}