mirror of
https://github.com/rabbibotton/clog.git
synced 2025-12-06 02:30:42 -08:00
63 lines
2.3 KiB
Common Lisp
63 lines
2.3 KiB
Common Lisp
;; Demonstrate CLOG presentations
|
|
;; links established between CLOG objects and Lisp objects
|
|
|
|
(defpackage #:clog-tut-29
|
|
(:use #:cl #:clog)
|
|
(:export start-tutorial))
|
|
|
|
(in-package :clog-tut-29)
|
|
|
|
(defclass my-class ()
|
|
((my-slot :accessor my-slot :initform "")
|
|
(my-count :accessor my-count :initform 500)))
|
|
|
|
(defun on-new-window (body)
|
|
(let* ((lisp-obj (make-instance 'my-class))
|
|
(i1 (create-form-element body :text
|
|
:label (create-label body :content "Form value:")))
|
|
(i2 (create-form-element body :text
|
|
:label (create-label body :content "(my-slot lisp-obj) value:")))
|
|
(b1 (create-button body :content "Set (my-slot lisp-obj) Value"))
|
|
(b2 (create-button body :content "Get (my-slot lisp-obj) Value"))
|
|
(tmp (create-br body))
|
|
(t1 (create-div body :content "[counter]"))
|
|
(i3 (create-form-element body :text
|
|
:label (create-label body :content "Change my-count:")))
|
|
(tmp (create-br body))
|
|
(t2 (create-div body :content "'Hello'")))
|
|
(declare (ignore tmp))
|
|
;; We set up direct relationships between lisp objects and clog objects
|
|
;; any change to i1 will change my-slot and any change to my-slot
|
|
;; will change i1 and transform it with #'string-upcase
|
|
(link-slot-and-form-element lisp-obj my-slot i1
|
|
:transform-to-element #'string-upcase)
|
|
;; any change to my-count will change t1
|
|
(link-slot-to-element lisp-obj my-count t1)
|
|
;; any change to i3 will change my-count
|
|
;; and i3's value will be transformed to an integer
|
|
(link-form-element-to-slot i3 lisp-obj my-count
|
|
:transform #'parse-integer)
|
|
;; Clicking on t2 will set my-slot to its text
|
|
(link-element-to-slot t2 lisp-obj my-slot :set-event #'set-on-click)
|
|
;; This change of my-slot will immediately change in the web page
|
|
(setf (my-slot lisp-obj) "First Value")
|
|
(set-on-click b1
|
|
(lambda (obj)
|
|
(declare (ignore obj))
|
|
(setf (my-slot lisp-obj) (value i2))))
|
|
(set-on-click b2
|
|
(lambda (obj)
|
|
(declare (ignore obj))
|
|
(setf (value i2) (my-slot lisp-obj))))
|
|
;; This updates an element on the page by just changing the value of the linked
|
|
;; slot and my-count can be adjusted mid loop from web page
|
|
(loop
|
|
(cond ((> (my-count lisp-obj) 0)
|
|
(decf (my-count lisp-obj))
|
|
(sleep .2))
|
|
(t
|
|
(return))))))
|
|
|
|
(defun start-tutorial ()
|
|
(initialize 'on-new-window)
|
|
(open-browser))
|