layouts/partials/sidebar-tree.html

{{/* We cache this partial for bigger sites and set the active class client side. */}}
{{ $sidebarCacheLimit := cond (isset .Site.Params.ui "sidebar_cache_limit") .Site.Params.ui.sidebar_cache_limit 2000 -}}
{{ $shouldDelayActive := ge (len .Site.Pages) $sidebarCacheLimit -}}
<div id="td-sidebar-menu" class="td-sidebar__inner{{ if $shouldDelayActive }} d-none{{ end }}">
  {{ if not .Site.Params.ui.sidebar_search_disable -}}
  <form class="td-sidebar__search d-flex align-items-center">
    {{ partial "search-input.html" . }}
    <button class="btn btn-link td-sidebar__toggle d-md-none p-0 ml-3 fas fa-bars" type="button" data-toggle="collapse" data-target="#td-section-nav" aria-controls="td-docs-nav" aria-expanded="false" aria-label="Toggle section navigation">
    </button>
  </form>
  {{ else -}}
  <div id="content-mobile">
    <form class="td-sidebar__search d-flex align-items-center">
      {{ partial "search-input.html" . }}
      <button class="btn btn-link td-sidebar__toggle d-md-none p-0 ml-3 fas fa-bars" type="button" data-toggle="collapse" data-target="#td-section-nav" aria-controls="td-docs-nav" aria-expanded="false" aria-label="Toggle section navigation">
      </button>
    </form>
  </div>
  <div id="content-desktop"></div>
  {{ end -}}
  <nav class="collapse td-sidebar-nav{{ if .Site.Params.ui.sidebar_menu_foldable }} foldable-nav{{ end }}" id="td-section-nav">
    <!-- {{ if  (gt (len .Site.Home.Translations) 0) }}
    <div class="nav-item dropdown d-block d-lg-none">
      {{ partial "navbar-lang-selector.html" . }}
    </div>
    {{ end }} -->
    <!-- {{ $navRoot := cond (and (ne .Params.toc_root true) (eq .Site.Home.Type "docs")) .Site.Home .FirstSection }} -->
    {{ $ulNr := 0 -}}
    {{ $ulShow := cond (isset .Site.Params.ui "ul_show") .Site.Params.ui.ul_show 1 -}}
    {{ $sidebarMenuTruncate := cond (isset .Site.Params.ui "sidebar_menu_truncate") .Site.Params.ui.sidebar_menu_truncate 50 -}}
    {{ $currentLang := .Site.Language -}}
    <ul class="td-sidebar-nav__section pr-md-3 ul-{{ $ulNr }}">
      {{ template "section-tree-nav-section" (dict "page" . "section" .FirstSection "shouldDelayActive" $shouldDelayActive "sidebarMenuTruncate" $sidebarMenuTruncate "ulNr" $ulNr "ulShow" (add $ulShow 1) "currentLang" $currentLang)  }}
    </ul>
  </nav>
</div>
{{ define "section-tree-nav-section" -}}
  {{ $s := .section -}}
  {{ $p := .page -}}
  {{ $shouldDelayActive := .shouldDelayActive -}}
  {{ $sidebarMenuTruncate := .sidebarMenuTruncate -}}
  {{ $treeRoot := cond (eq .ulNr 0) true false -}}
  {{ $ulNr := .ulNr -}}
  {{ $ulShow := .ulShow -}}
  {{ $active := and (not $shouldDelayActive) (eq $s $p) -}}
  {{ $activePath := or (and (not $shouldDelayActive) ($p.IsDescendant $s)) $s.Params.always_unfold -}}
  {{ $show := cond (or (lt $ulNr $ulShow) $activePath (and (not $shouldDelayActive) (eq $s.Parent $p.Parent)) (and (not $shouldDelayActive) (eq $s.Parent $p)) (and (not $shouldDelayActive) ($p.IsDescendant $s.Parent))) true false -}}
  {{ $mid := printf "m-%s" ($s.RelPermalink | anchorize) -}}
  {{ $pages_tmp := where (union $s.Pages $s.Sections).ByWeight ".Params.toc_hide" "!=" true -}}
  {{ $pages := $pages_tmp | first $sidebarMenuTruncate -}}
  {{ $withChild := gt (len $pages) 0 -}}
  {{ $manualLink := cond (isset $s.Params "manuallink") $s.Params.manualLink ( cond (isset $s.Params "manuallinkrelref") (relref $s $s.Params.manualLinkRelref) $s.RelPermalink) -}}
  {{ $manualLinkTitle := cond (isset $s.Params "manuallinktitle") $s.Params.manualLinkTitle $s.Title -}}

  <li class="td-sidebar-nav__section-title td-sidebar-nav__section{{ if $withChild }} with-child{{ else }} without-child{{ end }}{{ if $activePath }} active-path{{ end }}{{ if (not (or $show $p.Site.Params.ui.sidebar_menu_foldable )) }} collapse{{ end }}" id="{{ $mid }}-li">
    {{ if (and $p.Site.Params.ui.sidebar_menu_foldable (ge $ulNr 1)) -}}
      <input type="checkbox" id="{{ $mid }}-check"{{ if $activePath}} checked{{ end }}/>
      <label for="{{ $mid }}-check"><a href="{{ $manualLink }}"{{ if ne $s.LinkTitle $manualLinkTitle }} title="{{ $manualLinkTitle }}"{{ end }}{{ with $s.Params.manualLinkTarget }} target="{{ . }}"{{ if eq . "_blank" }} rel="noopener"{{ end }}{{ end }} class="align-left pl-0 {{ if $active}} active{{ end }} td-sidebar-link{{ if $s.IsPage }} td-sidebar-link__page{{ else }} td-sidebar-link__section{{ end }}{{ if $treeRoot }} tree-root{{ end }}" id="{{ $mid }}">{{ with $s.Params.Icon}}<i class="{{ . }}"></i>{{ end }}<span class="{{ if $active }}td-sidebar-nav-active-item{{ end }}">{{ $s.LinkTitle }}</span></a></label>
    {{ else -}}
      {{ if not $treeRoot }}
      <a href="{{ $manualLink }}"{{ if ne $s.LinkTitle $manualLinkTitle }} title="{{ $manualLinkTitle }}"{{ end }}{{ with $s.Params.manualLinkTarget }} target="{{ . }}"{{ if eq . "_blank" }} rel="noopener"{{ end }}{{ end }} class="align-left pl-0{{ if $active}} active{{ end }} td-sidebar-link{{ if $s.IsPage }} td-sidebar-link__page{{ else }} td-sidebar-link__section{{ end }}" id="{{ $mid }}">{{ with $s.Params.Icon}}<i class="{{ . }}"></i>{{ end }}<span class="{{ if $active }}td-sidebar-nav-active-item{{ end }}">{{ $s.LinkTitle }}</span></a>
      {{ end -}}
    {{ end -}}
    {{ if $withChild -}}
      {{ $ulNr := add $ulNr 1 -}}
      <ul class="ul-{{ $ulNr }}{{ if (gt $ulNr 1)}} foldable{{end}}">
        {{ $pages := where (union $s.Pages $s.Sections).ByWeight ".Params.toc_hide" "!=" true -}}
        {{ with site.Params.language_alternatives -}}
          {{ range . }}
            {{ with (where $.section.Translations ".Lang" . ) -}}
              {{ $p := index . 0 -}}
              {{ $pages = where ( $pages | lang.Merge (union $p.Pages $p.Sections)) ".Params.toc_hide" "!=" true -}}
            {{ end -}}
          {{ end -}}
        {{ end -}}
        {{ $pages := $pages | first 50 -}}
        {{ range $pages -}}
          {{ if (not (and (eq $s $p.Site.Home) (eq .Params.toc_root true)) ) -}}
            {{ $mid := printf "m-%s" (.RelPermalink | anchorize) -}}
            {{ $active := eq . $p -}}
            {{ $isForeignLanguage := (ne (string .Lang) (string $.currentLang)) -}}
            {{ if (and $isForeignLanguage  ($p.IsDescendant $s)) -}}
              <a class="td-sidebar-link td-sidebar-link__page {{ if and (not $shouldDelayActive) $active }} active{{ end }}" id="{{ $mid }}" {{ if $isForeignLanguage }}target="_blank"{{ end }}  href="{{ .RelPermalink }}">
                {{ .LinkTitle }}{{ if $isForeignLanguage }} <small>({{ .Lang | upper }})</small>{{ end -}}
              </a>
            {{ else -}}
              {{ template "section-tree-nav-section" (dict "page" $p "section" . "currentLang" $.currentLang "shouldDelayActive" $shouldDelayActive "sidebarMenuTruncate" $sidebarMenuTruncate "ulNr" $ulNr "ulShow" $ulShow) }}
            {{- end }}
          {{- end }}
        {{- end }}
      </ul>
    {{- end }}
  </li>
{{- end }}