hugo-theme-relearn/layouts/partials/sidebar/element/variantswitcher.html

{{- $themevariants := partialCached "_relearn/themeVariants.gotmpl" .page }}
{{- $icon := .element.icon | default "paint-brush" }}
{{- if and $icon (not (findRE ".*?\\bfa-\\w.*?" $icon)) }}
  {{- $icon = printf "fa-fw fas fa-%s" $icon }}
{{- end }}
            <li class="R-variantswitcher">
              <div class="padding menu-control">
                <i class="{{ $icon }}"></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.relearn.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.relearn.markVariant();</script>
            </li>