Base for new jQuery plugins written in Coffeescript. Enables plugin methods. Based on http://coffeescriptcookbook.com/chapters/jquery/plugin and http://docs.jquery.com/Plugins/Authoring#Plugin_Methods .

jquery.baseplugin.coffee

$ = jQuery

$.fn.extend

  foobar: (method) ->

    settings =
      option1: true
      option2: false    
    
    localMethod = ->
      console.log "Local method called!"
            
    apiMethods = 
      init: (options) ->
        settings = $.extend true, settings, options
        console.log "Initialized!"
        localMethod()                                # "private" methods
        console.log $(@).attr 'id'                   # scope, this = DOM element
        console.log "Option 1: #{settings.option1}"  # options
        
      destroy: ->
        console.log "Destroyed!"        
        
    if apiMethods[method]?
      apiMethods[method].apply @, Array.prototype.slice.call(arguments, 1)
    else if typeof method is 'object' or !method
      apiMethods.init.apply @, arguments
    else
      $.error "jQuery.foobar doesn't implement the method '#{method}'."                   

jquery.baseplugin_examples.coffee

$('#foo').foobar(option1: false)
# -> Initialized!
# -> Local method called!
# -> foo
# -> Option 1: false

$('#bar').foobar('destroy')
# -> Destroyed!

$('#bat').foobar('foo')         
# -> Uncaught Error: jQuery.foobar doesn't implement the method 'foo'.