delegates.coffee

Object::delegates = (methods, to) ->
  methods.forEach (method) =>
    this::[method] = (args...) ->
      @[to][method].apply(this, args)

class AjaxService
  start: (target) ->
    console.log("STARTING AJAX AT #{target}")
  success: (message) ->
    console.log("YOU DEED IT #{message}")
  failure: (error) ->
    console.log("ERROR MESSAGE WAS #{error}")
  complete: (done_message) ->
    console.log("DONE MESSAGE WAS #{done_message}")

class Implementor
  constructor: ->
    @delegateObject = new AjaxService

Implementor.delegates(["start", "success", "failure", "complete"], "delegateObject")

i = new Implementor

i.start("TELL ME SOME AJAX")