{{- $page := .page }}
{{- $class := .class | default "" }}
{{- $href := (trim .href " ") | default "" }}
{{- $target := .target | default "" }}
{{- $type := .type | default "" }}
{{- $isDisabled := not $href }}
{{- $isButton := false }}
{{- if or (not $href) (strings.HasPrefix $href "javascript:") }}
  {{- $isButton = true }}
  {{- $href = substr $href (len "javascript:") }}
  {{- if not $type }}
    {{- $type = "button" }}
  {{- end }}
{{- else if and (eq (len $target) 0) (or (strings.HasPrefix $href "http://") (strings.HasPrefix $href "https://") ) }}
  {{- $target = "_blank" }}
  {{- if isset $page.Site.Params "externallinktarget" }}
    {{- $target = $page.Site.Params.externalLinkTarget }}
  {{- end }}
{{- end }}
{{- $title := (trim .title " ") | default "" }}
{{- $icon := (trim .icon " ") | default "" }}
{{- if and $icon (not (findRE ".*?\\bfa-\\w.*?" $icon)) }}
  {{- $icon = printf "fa-fw fas fa-%s" $icon }}
{{- end }}
            <div class="topbar-button {{ $class }}">
{{- if $isDisabled }}
              <span>
{{- else if $isButton }}
              <button{{ if $href }} onclick="{{ $href | safeJS }}"{{ end }}{{ if gt (len $type) 0 }} type="{{ $type }}"{{ end }} title="{{ $title }}">
{{- else }}
              <a{{ if $href }} href="{{ $href }}"{{ if gt (len $target) 0 }} target="{{ $target }}"{{ end }}{{ end }} title="{{ $title }}">
{{- end }}
                <i class="{{ $icon }}"></i>
{{- if $isDisabled }}
              </span>
{{- else if $isButton }}
              </button>
{{- else }}
              </a>
{{- end }}
            </div>