mvc.rkt

;; The MIT License (MIT)
;; 
;; Copyright (c) 2013 Matthew C. Jadud
;; 
;; Permission is hereby granted, free of charge, to any person obtaining a copy
;; of this software and associated documentation files (the "Software"), to deal
;; in the Software without restriction, including without limitation the rights
;; to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
;; copies of the Software, and to permit persons to whom the Software is
;; furnished to do so, subject to the following conditions:
;; 
;; The above copyright notice and this permission notice shall be included in
;; all copies or substantial portions of the Software.
;; 
;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
;; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
;; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
;; AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
;; LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
;; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
;; THE SOFTWARE.

#lang racket

(require "session.rkt")

(provide (all-defined-out))

(define model%
  (class object%
    (field [views empty])
    
    (define/public (add-view v)
      (set! views (cons v views)))
    
    (define/public (update)
      (for ([v views])
        (send v update)))
    
    (super-new)))

(define updateable<%>
  (interface () update))

(define view%
  (class* object% (updateable<%>)
    (init [m false])
    
    (abstract update)
    
    (super-new)))

(define controller%
  (class object%
    (init [m false])
    
    (super-new)))