path: root/mc.lsp

;;; Port of https://stackoverflow.com/questions/3984296/model-view-controller-design-pattern-code-example.
;;; Model and Controller classes.
;;;
;;; Probably better to just use ltk.

(require "json")
(defpackage #:mc
  (:use #:openlisp #:json)
  (:export
    #:mc-server)
  )
(in-package #:mc)

(defclass <graph-gui-stub> () ((button :accessor button)
                                (model :accessor model)
                                (controller :writer controller)))
(defmethod initialize-object :after ((self <graph-gui-stub>) initargs)
  (setf (button self) (create (class <button>) 'm "Click Me"))
  (setf (model self) (create (class <graph-data>)))
  (setf (controller self) (create (class <graph-controller>) 'm (model self) 'b (button self))))
(defclass <graph-data> () ((number :reader number :writer get-number)))
(defmethod initialize-object :after ((self <graph-data>) initargs)
  (setf (number self) 10))
(defgeneric increase-number (data))
(defmethod increase-number ((data <graph-data>))
  (setf (number data) (+ (get-number data) 10)))
(defclass <graph-controller> () ((model :initarg m :reader model)
                                  (button :initarg b :reader button)))
(defmethod initialize-object :after ((self <graph-controller>) initargs)
  (set-click-handler (button self) self #'on-button-clicked))
(defgeneric on-button-clicked (controller))
(defmethod on-button-clicked ((controller <graph-controller>))
  (increase-number (model controller)))
(provide "mc")