module Playbook::Position

def self.included(base)
  base.prop :position
end

def position_options
  {
    position: "position",
  }
end

def position_props
  selected_props = position_options.keys.select { |sk| try(sk) }
  return nil unless selected_props.present?
  selected_props.map do |k|
    value = send(k)
    return nil unless position_values.include? value
    "position_#{value}"
  end.compact.join(" ")
end

def position_values
  %w[relative absolute fixed sticky]
end