toggler.coffee

class Toggler
  defaults =
    toggled_class: 'open'

  constructor: (el, options) ->
    @$element = $(el)
    @options  = $.extend {}, defaults, options
    @init()

  $target: -> $(@$element.data('target'))

  open: ->
    @$element.trigger('toggler.open')
    $target.addClass('open')

  close: ->
    @$element.trigger('toggler.close')
    @$target().removeClass('open')

  onClick: => $target?.toggleClass @options.toggled_class

  bindHandlers: ->
    @$element.on 'click', @onClick

Toggler::init = ->
  @bindHandlers()

$.fn.toggler = (options, params...) ->
  @each ->
    toggler = $.data @, 'plugin_toggler'
    if typeof options == 'string'
      toggler?[options].apply toggler, params
    else
      $.data @, 'plugin_toggler', new Toggler @, options if !toggler