hugo-theme-relearn/layouts/partials/menu.html

    {{- $showvisitedlinks := .Site.Params.showVisitedLinks }}
    <aside id="R-sidebar" class="default-animation{{ if $showvisitedlinks }} showVisitedLinks{{ end }}">
      {{- $currentNode := . }}
      <div id="R-header-topbar" class="default-animation"></div>
      <div id="R-header-wrapper" class="default-animation">
        <div id="R-header" class="default-animation">
{{ partial "logo.html" . }}
        </div>{{ partial "search.html" . }}
      </div>
      <div id="R-homelinks" class="default-animation{{ if not .Site.Params.disableLandingPageButton }} homelinks{{ end }}">
      {{- if not .Site.Params.disableLandingPageButton }}
        {{- if (ne .Site.Params.landingPageURL nil) }}
          {{- warnf "UNSUPPORTED usage of 'landingPageURL' config parameter found, remove it and optionally overwrite the `logo.html` partial to provide a link if it should not point to the project's home page; see https://mcshelby.github.io/hugo-theme-relearn/introduction/releasenotes/4/#4-2-0" }}
        {{- end }}
        <ul>
          <li><a class="padding" href="{{ partial "permalink.gotmpl" (dict "to" .Site.Home) }}">{{ .Site.Params.landingPageName | default `<i class="fa-fw fas fa-home"></i> Home` | safeHTML }}</a></li>
        </ul>
      {{- end }}
        <hr class="padding">
      </div>
      <div id="R-content-wrapper" class="highlightable">
        {{- $menuconfigs := .Params.sidebarmenus | default site.Params.sidebarmenus | default (slice
          (dict "type" "page" "identifier" "home")
          (dict "type" "menu" "identifier" "shortcuts")
        ) }}
        {{- range $menuconfigs }}
          {{- $config := . }}
          {{- if eq $config.type "page" }}
            {{- partial "partials/inline/page-tree" (dict "currentnode" $currentNode "config" $config "showvisitedlinks" $showvisitedlinks) }}
          {{- else if eq $config.type "menu" }}
            {{- partial "partials/inline/menu-tree" (dict "currentnode" $currentNode "config" $config "showvisitedlinks" $showvisitedlinks) }}
          {{- else }}
            {{- warnf "WARNING: unknown menu type '%s' found in parameter 'sidebarmenus' for menu '%s'; use either 'page' or 'menu'" $config.type $config.identifier }}
          {{- end }}
        {{- end }}
        {{- $siteLanguages := .Site.Languages }}
        {{- $showlangswitch := and hugo.IsMultilingual (not .Site.Params.disableLanguageSwitchingButton) (gt (int (len $siteLanguages)) 1) }}
        {{- $themevariants := partialCached "_relearn/themeVariants.gotmpl" . }}
        {{- $showvariantswitch := gt (int (len $themevariants)) 1 }}
        {{- $footer := partial "menu-footer.html" . }}
        {{- $showfooter := not (eq 0 (int (len ($footer | plainify)))) }}
        <div class="padding footermargin footerLangSwitch footerVariantSwitch footerVisitedLinks footerFooter{{if $showlangswitch}} showLangSwitch{{end}}{{if $showvariantswitch}} showVariantSwitch{{end}}{{if $showvisitedlinks}} showVisitedLinks{{end}}{{if $showfooter}} showFooter{{end}}"></div>
        <div id="R-menu-footer">
          <hr class="padding default-animation footerLangSwitch footerVariantSwitch footerVisitedLinks footerFooter{{if $showlangswitch}} showLangSwitch{{end}}{{if $showvariantswitch}} showVariantSwitch{{end}}{{if $showvisitedlinks}} showVisitedLinks{{end}}{{if $showfooter}} showFooter{{end}}">
          <div id="R-prefooter" class="footerLangSwitch footerVariantSwitch footerVisitedLinks{{if $showlangswitch}} showLangSwitch{{end}}{{if $showvariantswitch}} showVariantSwitch{{end}}{{if $showvisitedlinks}} showVisitedLinks{{end}}">
            <ul>
              <li id="R-select-language-container" class="footerLangSwitch{{if $showlangswitch}} showLangSwitch{{end}}">
                <div class="padding menu-control">
                  <i class="fa-fw fas fa-language"></i>
                  <span>&nbsp;</span>
                  <div class="control-style">
                    <label class="a11y-only" for="R-select-language">{{ T "Language" }}</label>
                    <select id="R-select-language" onchange="location = this.querySelector( this.value ).dataset.url;">
                      {{- $page := .Page }}
                      {{- $pageLang := .Page.Language.Lang }}
                      {{- range .Page.AllTranslations }}
                      <option id="R-select-language-{{ .Language.Lang }}" value="#R-select-language-{{ .Language.Lang }}" data-url="{{ partial "permalink.gotmpl" (dict "to" .) }}" lang="{{ .Language.LanguageCode }}"{{ if eq $pageLang .Language.Lang }} selected{{ end }}>{{ .Language.LanguageName }}</option>
                      {{- end }}
                    </select>
                  </div>
                  <div class="clear"></div>
                </div>
              </li>
              <li id="R-select-variant-container" class="footerVariantSwitch{{if $showvariantswitch}} showVariantSwitch{{end}}">
                <div class="padding menu-control">
                  <i class="fa-fw fas fa-paint-brush"></i>
                  <span>&nbsp;</span>
                  <div class="control-style">
                    <label class="a11y-only" for="R-select-variant">{{ T "Theme" }}</label>
                    <select id="R-select-variant" onchange="window.variants && variants.changeVariant( this.value );">
                      {{- $firstvariant := true }}
                      {{- range $themevariants }}
                        {{- $themevariant := . }}
                      <option id="R-select-variant-{{ $themevariant.identifier }}" value="{{ $themevariant.identifier }}"{{- if $firstvariant }} selected{{ end }}>{{ $themevariant.name }}</option>
                        {{- $firstvariant = false }}
                      {{- end }}
                    </select>
                  </div>
                  <div class="clear"></div>
                </div>
                <script>window.variants && variants.markSelectedVariant();</script>
              </li>
              <li class="footerVisitedLinks{{if $showvisitedlinks}} showVisitedLinks{{end}}">
                <div class="padding menu-control">
                  <i class="fa-fw fas fa-history"></i>
                  <span>&nbsp;</span>
                  <div class="control-style">
                    <button onclick="clearHistory();">{{ T "Clear-History" }}</button>
                  </div>
                  <div class="clear"></div>
                </div>
              </li>
            </ul>
          </div>
          <div id="R-footer" class="footerFooter{{if $showfooter}} showFooter{{end}}">
            {{- $footer }}
          </div>
        </div>
      </div>
    </aside>
{{- define "partials/inline/page-tree" }}
  {{- $currentNode := .currentnode }}
  {{- $config := .config }}
  {{- $showvisitedlinks := .showvisitedlinks }}
        <div id="R-shortcutmenu-{{ $config.identifier }}" class="R-sidebarmenu">
  {{- with site.Home.GetPage ($config.pageRef | default "") }}
    {{- $entry := . }}
    {{- $entries := partialCached "_relearn/pages.gotmpl" (dict "page" $entry) $entry.Path }}
    {{- $title := "" }}
    {{- if not ($config.disableTitle | default true) }}
      {{ $title = $entry.Params.menuTitle | default (T (print $config.identifier "-menuTitle")) }}
    {{- end }}
    {{- with $title }}
          <div class="nav-title padding">{{ . }}</div>
    {{- end }}
    {{- $classes := "space " }}
    {{- if ($config.main | default true) }}
      {{- $classes = "enlarge morespace " }}
    {{- end }}
          <ul class="{{ $classes }}collapsible-menu">
    {{- $defaultAlwaysopen := site.Params.alwaysopen | default false }}
    {{- range $entries }}
      {{- $isSubSelf := eq . $currentNode }}
      {{- $isSubAncestor := and (not $isSubSelf) (.IsAncestor $currentNode) }}
      {{- $isSubHidden := or (.Params.hidden) (eq .Title "") }}
      {{- $isSubCollapsible := .Params.collapsibleMenu | default site.Params.collapsibleMenu }}
      {{- if or $isSubSelf $isSubAncestor }}
        {{- partial "partials/inline/page-walker" (dict "sect" . "currentnode" $currentNode "showvisitedlinks" $showvisitedlinks "alwaysopen" $defaultAlwaysopen "isSelf" $isSubSelf "isAncestor" $isSubAncestor "isHidden" $isSubHidden) }}
      {{- else if and (not $isSubHidden) (or $isSubCollapsible (not $entry.RelPermalink) (eq $entry $currentNode) ($entry.IsAncestor $currentNode)) }}
        {{- $id := md5 .Path }}
        {{- partialCached "partials/inline/page-walker" (dict "sect" . "currentnode" $currentNode "showvisitedlinks" $showvisitedlinks "alwaysopen" $defaultAlwaysopen "isSelf" $isSubSelf "isAncestor" $isSubAncestor "isHidden" $isSubHidden) $id }}
      {{- end }}
    {{- end }}
          </ul>
        </div>
  {{- else }}
    {{- warnf "WARNING: page '%s' not found for sidebar menu '%s'" ($config.pageRef | default "") $config.identifier }}
  {{- end }}
{{- end }}
{{- define "partials/inline/page-walker" }}
  {{- $currentNode := .currentnode }}
  {{- $showvisitedlinks := .showvisitedlinks }}
  {{- $alwaysopen := .alwaysopen }}
  {{- $isSelf := .isSelf }}
  {{- $isAncestor := .isAncestor }}
  {{- $isHidden := .isHidden }}
  {{- with .sect }}
    {{- $isActive := $isSelf }}
    {{- $entry := . }}
    {{- $entries := partialCached "_relearn/pages.gotmpl" (dict "page" .) .Path }}
    {{- $hasVisibleChildren := false }}
    {{- range $entries }}
      {{- $isSubSelf := eq . $currentNode }}
      {{- $isSubAncestor := and (not $isSubSelf) (.IsAncestor $currentNode) }}
      {{- $isSubHidden := or (.Params.hidden) (eq .Title "") }}
      {{- if or $isSubAncestor $isSubSelf (not $isSubHidden) }}
        {{- $hasVisibleChildren = true }}
        {{- break }}
      {{- end }}
    {{- end }}
    {{- $title := partial "title.gotmpl" (dict "page" . "linkTitle" true) }}
    {{- $url := partial "permalink.gotmpl" (dict "to" .) }}
    {{- $isCrosslink := false }}
    {{- $target := "" }}
    {{- if .Params.menuPageRef }}
      {{- with site.Home.GetPage (.Params.menuPageRef) }}
        {{- $url = partial "permalink.gotmpl" (dict "to" .) }}
        {{- $isCrosslink = true }}
      {{- end }}
    {{- else if .Params.menuUrl }}
      {{- $url = .Params.menuUrl }}
      {{- $isCrosslink = true }}
      {{- $u := urls.Parse $url }}
      {{- if $u.IsAbs }}
        {{- $target = "_blank" }}
        {{- if isset site.Params "externallinktarget" }}
          {{- $target = site.Params.externalLinkTarget }}
        {{- end }}
      {{- end }}
    {{- end }}
    {{- $pre := partial "menu-pre.html" . }}
    {{- $post := partial "menu-post.html" . }}
    {{- if and $hasVisibleChildren (not $isCrosslink) }}
      {{- $isCollapsible := .Params.collapsibleMenu | default site.Params.collapsibleMenu }}
      {{- $currentAlwaysopen := .Params.alwaysopen | default $alwaysopen }}
      {{- if and (not $url) (not $isCollapsible) }}
        {{- $currentAlwaysopen = true }}
      {{- end }}
      {{- $entryId := md5 .Path }}
      {{- $isOpen := or $currentAlwaysopen $isSelf $isAncestor }}
            <li class="{{if $isActive }}active {{end}}{{if (or $isSelf $isAncestor) }}parent {{end}}{{if $isHidden }}hidden {{end}}{{if not $url }}headless {{end}}{{if $currentAlwaysopen}}alwaysopen {{end}}" data-nav-id="{{ $url }}">
      {{- if $isCollapsible }}<input type="checkbox" id="R-section-{{ $entryId }}" aria-controls="R-subsections-{{ $entryId }}"{{ if $isOpen }} checked{{ end }}><label for="R-section-{{ $entryId }}"><i class="fa-fw fas fa-chevron-right"></i><span class="a11y-only">{{ T "Submenu" $title }}</span></label>{{ end }}
      {{- if $url }}<a class="padding" href="{{ $url }}"{{ if gt (len $target) 0 }} target="{{ $target }}"{{ end }}>{{ else }}<span class="padding">{{ end }}
      {{- $pre }}{{ $title }}{{ $post }}
      {{- if $url }}{{ if $showvisitedlinks }}<i class="fa-fw fas fa-check read-icon"></i>{{ end }}</a>{{ else }}</span>{{ end }}<ul id="R-subsections-{{ $entryId }}" class="collapsible-menu">
      {{- $defaultAlwaysopen := site.Params.alwaysopen | default true }}
      {{- range $entries }}
        {{- $isSubSelf := eq . $currentNode }}
        {{- $isSubAncestor := and (not $isSubSelf) (.IsAncestor $currentNode) }}
        {{- $isSubHidden := or (.Params.hidden) (eq .Title "") }}
        {{- $isSubCollapsible := .Params.collapsibleMenu | default site.Params.collapsibleMenu }}
        {{- if or $isSubSelf $isSubAncestor }}
          {{- partial "partials/inline/page-walker" (dict "sect" . "currentnode" $currentNode "showvisitedlinks" $showvisitedlinks "alwaysopen" $defaultAlwaysopen "isSelf" $isSubSelf "isAncestor" $isSubAncestor "isHidden" $isSubHidden) }}
        {{- else if and (not $isSubHidden) (or $isSubCollapsible (not $entry.RelPermalink) (eq $entry $currentNode) ($entry.IsAncestor $currentNode)) }}
          {{- $id := md5 .Path }}
          {{- partialCached "partials/inline/page-walker" (dict "sect" . "currentnode" $currentNode "showvisitedlinks" $showvisitedlinks "alwaysopen" $defaultAlwaysopen "isSelf" $isSubSelf "isAncestor" $isSubAncestor "isHidden" $isSubHidden) $id }}
        {{- end }}
      {{- end }}</ul></li>
    {{- else if $url }}
            <li class="{{if $isActive }}active {{end}}{{if $isHidden }}hidden {{end}}{{if not $url }}headless {{end}}{{if $isCrosslink }}crosslink {{end}}" data-nav-id="{{ $url }}">
      {{- if $url }}<a class="padding" href="{{ $url }}"{{ if gt (len $target) 0 }} target="{{ $target }}"{{ end }}>{{ else }}<span class="padding">{{ end }}
      {{- $pre }}{{ $title }}{{ $post }}
      {{- if $url }}{{ if $showvisitedlinks }}<i class="fa-fw fas fa-check read-icon"></i>{{ end }}</a>{{ else }}</span>{{ end }}</li>
    {{- end }}
  {{- end }}
{{- end }}
{{- define "partials/inline/menu-tree" }}
  {{- $currentNode := .currentnode }}
  {{- $config := .config }}
  {{- $showvisitedlinks := .showvisitedlinks }}
  {{- with index site.Menus $config.identifier }}
        <div id="R-shortcutmenu-{{ $config.identifier }}" class="R-sidebarmenu">
    {{- $entry := "" }}
    {{- $entries := . }}
    {{- if eq (len $entries) 1 }}
      {{- with index $entries 0 }}
        {{- if not (partial "menupermalink.gotmpl" .) }}
          {{- /* because in Hugo menus can not have parameter but menu entries can,
            we can flag a single top level menu entry as a container; this container
            entry carrys just meta information and parameter, uses its children
            to build the "real" menu, and has no own `url` or `pageRef` */}}
          {{- $entry = . }}
          {{- $entries = .Children }}
        {{- end }}
      {{- end }}
    {{- end }}
    {{- $title := "" }}
    {{- if not ($config.disableTitle | default false) }}
      {{- if $entry }}
        {{- $title = partial "menutitle.gotmpl" $entry }}
      {{- else if eq $config.identifier "shortcuts" }}
        {{- if not site.Params.DisableShortcutsTitle }}
          {{- $title = T (print $config.identifier "-menuTitle") }}
        {{- end }}
      {{- else }}
        {{- $title = T (print $config.identifier "-menuTitle") }}
      {{- end }}
    {{- end }}
    {{- with $title }}
          <div class="nav-title padding">{{ . }}</div>
    {{- end }}
    {{- $classes := "space " }}
    {{- if ($config.main | default false) }}
      {{- $classes = "enlarge morespace " }}
    {{- end }}
          <ul class="{{ $classes }}collapsible-menu">
    {{- $root := or $entry site }}
    {{- $defaultAlwaysopen := site.Params.alwaysopen | default false }}
    {{- range $entries }}
      {{- $isSubSelf := eq .Page $currentNode }}
      {{- $isSubAncestor := and (not $isSubSelf) ($currentNode.HasMenuCurrent .Menu .) }}
      {{- $isSubHidden := or (.Params.hidden) (eq (partial "menutitle.gotmpl" .) "") }}
      {{- $isSubCollapsible := .Params.collapsibleMenu | default $root.Params.collapsibleMenu | default site.Params.collapsibleMenu }}
      {{- if or $isSubSelf $isSubAncestor }}
        {{- partial "partials/inline/menu-walker" (dict "menu" . "currentnode" $currentNode "showvisitedlinks" $showvisitedlinks "alwaysopen" $defaultAlwaysopen "isSelf" $isSubSelf "isAncestor" $isSubAncestor "isHidden" $isSubHidden "root" $root) }}
      {{- else if and (not $isSubHidden) (or $isSubCollapsible (not (partial "menupermalink.gotmpl" $entry)) (and $entry (eq $entry.Page $currentNode)) (and $entry ($currentNode.HasMenuCurrent $entry.Menu $entry))) }}
        {{- $id := md5 (print .) }}
        {{- partialCached "partials/inline/menu-walker" (dict "menu" . "currentnode" $currentNode "showvisitedlinks" $showvisitedlinks "alwaysopen" $defaultAlwaysopen "isSelf" $isSubSelf "isAncestor" $isSubAncestor "isHidden" $isSubHidden "root" $root) $id }}
      {{- end }}
    {{- end }}
          </ul>
        </div>
  {{- else }}
    {{ if ne $config.identifier "shortcuts" }}
      {{- warnf "WARNING: menu '%s' not found for sidebar menu '%s'" $config.identifier $config.identifier }}
    {{- end }}
  {{- end }}
{{- end }}
{{- define "partials/inline/menu-walker" }}
  {{- $currentNode := .currentnode }}
  {{- $showvisitedlinks := .showvisitedlinks }}
  {{- $alwaysopen := .alwaysopen }}
  {{- $isSelf := .isSelf }}
  {{- $isAncestor := .isAncestor }}
  {{- $isHidden := .isHidden }}
  {{- $root := .root }}
  {{- with .menu }}
    {{- $isActive := $isSelf }}
    {{- $entry := . }}
    {{- $entries := .Children }}
    {{- $hasVisibleChildren := false }}
    {{- range $entries }}
      {{- $isSubSelf := eq .Page $currentNode }}
      {{- $isSubAncestor := and (not $isSubSelf) ($currentNode.HasMenuCurrent .Menu .) }}
      {{- $isSubHidden := or (.Params.hidden) (eq (partial "menutitle.gotmpl" .) "") }}
      {{- if or $isSubAncestor $isSubSelf (not $isSubHidden) }}
        {{- $hasVisibleChildren = true }}
        {{- break }}
      {{- end }}
    {{- end }}
    {{- $title := partial "menutitle.gotmpl" . }}
    {{- $url := partial "menupermalink.gotmpl" . }}
    {{- $target := "" }}
    {{- $u := urls.Parse $url }}
    {{- if $u.IsAbs }}
      {{- $target = "_blank" }}
      {{- if isset site.Params "externallinktarget" }}
        {{- $target = site.Params.externalLinkTarget }}
      {{- end }}
    {{- end }}
    {{- $pre := .Pre }}
    {{- $post := .Post }}
    {{- with .Page }}
      {{- $pre = or $pre (partial "menu-pre.html" .) }}
      {{- $post = or $post (partial "menu-post.html" .) }}
    {{- end }}
    {{- if $hasVisibleChildren }}
      {{- $isCollapsible := .Params.collapsibleMenu | default $root.Params.collapsibleMenu | default site.Params.collapsibleMenu }}
      {{- $currentAlwaysopen := .Params.alwaysopen | default $root.Params.alwaysopen | default $alwaysopen }}
      {{- if and (not $url) (not $isCollapsible) }}
        {{- $currentAlwaysopen = true }}
      {{- end }}
      {{- $entryId := md5 (print .) }}
      {{- $isOpen := or $currentAlwaysopen $isSelf $isAncestor }}
            <li class="{{if $isActive }}active {{end}}{{if (or $isSelf $isAncestor) }}parent {{end}}{{if $isHidden }}hidden {{end}}{{if not $url }}headless {{end}}{{if $currentAlwaysopen}}alwaysopen {{end}}" data-nav-id="{{ $url }}">
      {{- if $isCollapsible }}<input type="checkbox" id="R-section-{{ $entryId }}" aria-controls="R-subsections-{{ $entryId }}"{{ if $isOpen }} checked{{ end }}><label for="R-section-{{ $entryId }}"><i class="fa-fw fas fa-chevron-right"></i><span class="a11y-only">{{ T "Submenu" $title }}</span></label>{{ end }}
      {{- if $url }}<a class="padding" href="{{ $url }}"{{ if gt (len $target) 0 }} target="{{ $target }}"{{ end }}>{{ else }}<span class="padding">{{ end }}
      {{- $pre }}{{ $title }}{{ $post }}
      {{- if $url }}{{ if $showvisitedlinks }}<i class="fa-fw fas fa-check read-icon"></i>{{ end }}</a>{{ else }}</span>{{ end }}<ul id="R-subsections-{{ $entryId }}" class="collapsible-menu">
      {{- $defaultAlwaysopen := site.Params.alwaysopen | default true }}
      {{- range $entries }}
        {{- $isSubSelf := eq .Page $currentNode }}
        {{- $isSubAncestor := and (not $isSubSelf) ($currentNode.HasMenuCurrent .Menu .) }}
        {{- $isSubHidden := or (.Params.hidden) (eq (partial "menutitle.gotmpl" .) "") }}
        {{- $isSubCollapsible := .Params.collapsibleMenu | default $root.Params.collapsibleMenu | default site.Params.collapsibleMenu }}
        {{- if or $isSubSelf $isSubAncestor }}
          {{- partial "partials/inline/menu-walker" (dict "menu" . "currentnode" $currentNode "showvisitedlinks" $showvisitedlinks "alwaysopen" $defaultAlwaysopen "isSelf" $isSubSelf "isAncestor" $isSubAncestor "isHidden" $isSubHidden "root" $root) }}
        {{- else if and (not $isSubHidden) (or $isSubCollapsible (not (partial "menupermalink.gotmpl" $entry)) (eq $entry.Page $currentNode) ($currentNode.HasMenuCurrent $entry.Menu $entry)) }}
          {{- $id := md5 (print .) }}
          {{- partialCached "partials/inline/menu-walker" (dict "menu" . "currentnode" $currentNode "showvisitedlinks" $showvisitedlinks "alwaysopen" $defaultAlwaysopen "isSelf" $isSubSelf "isAncestor" $isSubAncestor "isHidden" $isSubHidden "root" $root) $id }}
        {{- end }}
      {{- end }}</ul></li>
    {{- else if $url }}
            <li class="{{if $isActive }}active {{end}}{{if $isHidden }}hidden {{end}}{{if not $url }}headless {{end}}" data-nav-id="{{ $url }}">
      {{- if $url }}<a class="padding" href="{{ $url }}"{{ if gt (len $target) 0 }} target="{{ $target }}"{{ end }}>{{ else }}<span class="padding">{{ end }}
      {{- $pre }}{{ $title }}{{ $post }}
      {{- if $url }}{{ if $showvisitedlinks }}<i class="fa-fw fas fa-check read-icon"></i>{{ end }}</a>{{ else }}</span>{{ end }}</li>
    {{- end }}
  {{- end }}
{{- end }}