Module: Klods::Components::Tabs

Included in:
Builders
Defined in:
lib/klods/components/tabs.rb

Instance Method Summary collapse

Instance Method Details

#tab_panel(a = nil, b = nil) ⇒ Object 



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# File 'lib/klods/components/tabs.rb', line 4

def tab_panel(a = nil, b = nil)
  props, children = Core.normalize_args(a, b)
  label = props.delete(:label) || props.delete("label")
  attrs = label ? props.merge("data-tab-label" => label.to_s) : props
  Core.el("div", attrs, children)
end

#tabs(a = nil, b = nil) ⇒ Object 



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# File 'lib/klods/components/tabs.rb', line 11

def tabs(a = nil, b = nil)
  props, children = Core.normalize_args(a, b)
  props = props.transform_keys(&:to_s)
  panels = Array(children).flatten.select { |c| c.is_a?(Node) }

  ns = props["id"] ? Core.slug_id("klods-tabs", props["id"].to_s) : "klods-tabs"

  items = panels.each_with_index.map do |panel, i|
    label = panel.attrs["data-tab-label"] || "Tab #{i + 1}"
    tab_id = Core.slug_id("#{ns}-tab", "#{label}-#{i + 1}")
    panel_id = Core.slug_id("#{ns}-panel", "#{label}-#{i + 1}")
    {panel: panel, label: label, tab_id: tab_id, panel_id: panel_id, active: i == 0}
  end

  tab_list = Core.el(
    "div",
    {"class" => "klods-tabs__list", "role" => "tablist"},
    items.map do |item|
      tab_attrs = {
        "type" => "button",
        "role" => "tab",
        "id" => item[:tab_id],
        "aria-selected" => item[:active].to_s,
        "aria-controls" => item[:panel_id],
        "class" => item[:active] ? "klods-tabs__tab klods-tabs__tab--active" : "klods-tabs__tab"
      }
      tab_attrs["tabindex"] = "-1" unless item[:active]
      Core.el("button", tab_attrs, item[:label])
    end
  )

  panel_nodes = items.map do |item|
    panel = item[:panel]
    panel_attrs = panel.attrs.except("data-tab-label")
    extra_class = panel_attrs.delete("class")
    cls = Core.class_names("klods-tabs__panel", Core.resolve_class(extra_class))
    attrs = panel_attrs.merge(
      "class" => cls.empty? ? nil : cls,
      "role" => "tabpanel",
      "id" => item[:panel_id],
      "aria-labelledby" => item[:tab_id]
    ).compact
    attrs["hidden"] = true unless item[:active]
    Node.new("div", attrs, panel.children)
  end

  extra_class = props.delete("class")
  cls = Core.class_names("klods-tabs", Core.resolve_class(extra_class))
  Core.el("div", props.merge("class" => cls.empty? ? nil : cls).compact, [tab_list, *panel_nodes])
end