hinode/layouts/shortcodes/nav-item.html

<!-- 
    Defines an individual nav item. The shortcode supports the following arguments:
    "header"        Required header of the nav item.
    "class"         Optional class attribute of the inner nav item.
    "show"          Optional flag to indicate an item should be shown.
-->

{{ $current := "" }}
{{ $error := false -}}

{{ if not .Parent }}
    {{ errorf "The nav-item shortcode should be contained within a nav shortcode: %s" .Position }}
{{ else }}
    {{- $id := .Ordinal -}}
    {{- $parent := printf "nav-%d" .Parent.Ordinal -}}
    {{- with (.Parent.Get "id") -}}
        {{- $parent = . -}}
    {{- end -}}

    {{- $fade := false -}}
    {{- if eq (.Parent.Get "fade") "true" -}}
        {{- $fade = true -}}
    {{- end -}}

    {{- $header := .Get "header" | default "" -}}
    {{- if not $header -}}
        {{- errorf "Missing value for param 'header': %s" .Parent.Position -}}
    {{- end -}}

    {{- $class := .Get "class" | default "" -}}
    {{- $body := trim .Inner " \r\n" | .Page.RenderString -}}

    {{- $supportedFlags := slice "true" "false" -}}
    {{- $showParam := "false" -}}
    {{- $show := false -}}
    {{- with .Get "show" }}{{ $showParam = . }}{{ end -}}
    {{- if in $supportedFlags $showParam -}}
        {{- if eq $showParam "true" }}{{ $show = true }}{{ else }}{{ $show = false }}{{ end -}}
    {{- else -}}
        {{- errorf "Invalid value for param 'show': %s" $showParam -}}
    {{- end -}}

    {{- $disabledParam := "false" -}}
    {{- $disabled := false -}}
    {{- with .Get "disabled" }}{{ $disabledParam = . }}{{ end -}}
    {{- if in $supportedFlags $disabledParam -}}
        {{- if eq $disabledParam "true" }}{{ $disabled = true }}{{ else }}{{ $disabled = false }}{{ end -}}
    {{- else -}}
        {{- errorf "Invalid value for param 'disabled': %s" $disabledParam -}}
    {{- end -}}

    {{ $output := partial "assets/nav-item" (dict 
        "id" $id
        "parentID" $parent
        "fade" $fade
        "header" $header
        "class" $class
        "body" $body
        "show" $show
        "disabled" $disabled
        )
    }}

    {{ $current := .Parent.Scratch.Get "inner" }}
    {{ if $current }}
        {{ .Parent.Scratch.Set "inner" (print $current $output) }}
    {{ else }}
        {{ .Parent.Scratch.Set "inner" $output }}
    {{ end }}
{{ end }}