module TaskList
  
  def self.included(base)
    base.extend Events
    base.send :include, Events
  end
  
  module Events
    def events
      @events ||= Hash.new {|h,k| h[k] = []}
    end
  
    def task(event, block)
      event = event.to_s
      events[event] << block
    end
  end
  
protected
  def fire(event, *args)
    (self.class.events[event.to_s] + events[event.to_s]).map {|task| task.call(self, args) }
  end
  
end