class TrustyCms::AdminUI::NavTab

def <<(*args)
  options = args.extract_options!
  item = args.size > 1 ? deprecated_add(*(args << caller)) : args.first
  raise DuplicateTabNameError.new("duplicate tab name `#{item.name}'") if self[item.name]
  item.tab = self if item.respond_to?(:tab=)
  if options.empty?
    super(item)
  else
    options.symbolize_keys!
    before = options.delete(:before)
    after = options.delete(:after)
    tab_name = before || after
    if self[tab_name]
      _index = index(self[tab_name])
      _index += 1 unless before
      insert(_index, item)
    else
      super(item)
    end
  end
end

def [](id)
  if id.is_a? Integer
    super
  else
    find { |subnav_item| subnav_item.name.to_s.titleize == id.to_s.titleize }
  end
end

def add_item(*args)
  options = args.extract_options!
  options.symbolize_keys!
  before = options.delete(:before)
  after = options.delete(:after)
  tab_name = before || after
  if self[tab_name]
    _index = index(self[tab_name])
    _index += 1 unless before
    insert(_index, NavSubItem.new(args.first, args.second))
  else
    add NavSubItem.new(args.first, args.second)
  end
end

def deprecated_add(name, url, caller)
  ActiveSupport::Deprecation.warn("admin.tabs.add is no longer supported in TrustyCms 0.9.x.  Please update your code to use: \ntab \"Content\" do\n\tadd_item(...)\nend", caller)
  NavSubItem.new(name, url)
end

def initialize(name)
  @name = name
end

def visible?(user)
  any? { |sub_item| sub_item.visible?(user) }
end