class Primer::Alpha::Navigation::Tab

When the selected tab does not correspond to the current page, such as in a nested inner tab, make sure to use aria-current=“true”
‘Tab` renders the selected anchor tab with `aria-current=“page”` by default.
@accessibility
and `Primer::Alpha::UnderlineNav` and should not be used by itself.
This component is part of navigation components such as `Primer::Alpha::TabNav`

def initialize(list: false, selected: false, with_panel: false, panel_id: "", icon_classes: "", wrapper_arguments: {}, **system_arguments)

Parameters:
  • system_arguments (Hash) -- <%= link_to_system_arguments_docs %>
  • wrapper_arguments (Hash) -- <%= link_to_system_arguments_docs %> to be used in the `
  • ` wrapper when the tab is an item in a list.
  • icon_classes (Boolean) -- Classes that must always be applied to icons.
  • panel_id (String) -- Only applies if `with_panel` is `true`. Unique id of panel.
  • with_panel (Boolean) -- Whether the Tab has an associated panel.
  • selected (Boolean) -- Whether the Tab is selected or not.
  • list (Boolean) -- Whether the Tab is an item in a `
      ` list. 
def initialize(list: false, selected: false, with_panel: false, panel_id: "", icon_classes: "", wrapper_arguments: {}, **system_arguments)
  @selected = selected
  @icon_classes = icon_classes
  @list = list
  @with_panel = with_panel
  @system_arguments = system_arguments
  @id = @system_arguments[:id]
  @wrapper_arguments = wrapper_arguments
  if with_panel || @system_arguments[:tag] == :button
    @system_arguments[:tag] = :button
    @system_arguments[:type] = :button
    @system_arguments[:role] = :tab
    panel_id(panel_id)
    # https://www.w3.org/TR/wai-aria-practices/#presentation_role
    @wrapper_arguments[:role] = :presentation
  else
    @system_arguments[:tag] = :a
  end
  @wrapper_arguments[:tag] = :li
  @wrapper_arguments[:display] ||= :inline_flex
  return unless @selected
  if @system_arguments[:tag] == :a
    aria_current = aria("current", system_arguments) || DEFAULT_ARIA_CURRENT_FOR_ANCHOR
    @system_arguments[:"aria-current"] = fetch_or_fallback(ARIA_CURRENT_OPTIONS_FOR_ANCHOR, aria_current, DEFAULT_ARIA_CURRENT_FOR_ANCHOR)
  else
    @system_arguments[:"aria-selected"] = true
  end
end

def panel_id(panel_id) 

def panel_id(panel_id)
  if panel_id.blank?
    raise ArgumentError, "`panel_id` is required" unless Rails.env.production?
  else
    @panel_id = panel_id
    @system_arguments[:"aria-controls"] = @panel_id
  end
end

def wrapper 

def wrapper
  unless @list
    yield
    return # returning `yield` caused a double render
  end
  render(Primer::BaseComponent.new(**@wrapper_arguments)) do
    yield if block_given?
  end
end