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bidirectonal links

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David Botton 2022-02-15 14:47:37 -05:00
parent 95b22e46f0
commit 523af33dbd
3 changed files with 39 additions and 7 deletions
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34
source/clog-presentations.lisp
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@ -8,12 +8,44 @@
(cl:in-package :clog)
;;; clog-presentations - link Lisp classes to CLOG objects
;;; clog-presentations - link Lisp objects and CLOG objects
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Implementation - clog-presentations
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; link-slot-and-form-element ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defmacro link-slot-and-form-element (object accessor clog-obj
&key (set-event #'set-on-change)
transform-to-lisp
transform-to-element)
"Biderectional link slot (ACCESSOR OBJECT) <> clog-form-element (CLOG-OBJ)"
`(progn
(link-form-element-to-slot ,clog-obj ,object ,accessor
:set-event ,set-event
:transform ,transform-to-lisp)
(link-slot-to-form-element ,object ,accessor ,clog-obj
:transform ,transform-to-element)))
;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; link-slot-and-element ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defmacro link-slot-and-element (object accessor clog-obj
&key (set-event #'set-on-change)
transform-to-lisp
transform-to-element)
"Biderectional link slot (ACCESSOR OBJECT) <> clog-element (CLOG-OBJ)"
`(progn
(link-element-to-slot ,clog-obj ,object ,accessor
:set-event ,set-event
:transform ,transform-to-lisp)
(link-slot-to-element ,object ,accessor ,clog-obj
:transform ,transform-to-element)))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; link-form-element-to-slot ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

2
source/clog.lisp
View file

@ -495,6 +495,8 @@ embedded in a native template application.)"
(defsection @clog-presentations (:title "CLOG Presentations")
"CLOG-Presentations - CLOG Presentations"
(link-slot-and-form-element macro)
(link-slot-and-element macro)
(link-form-element-to-slot macro)
(link-element-to-slot macro)
(link-element-to-place macro)

10
tutorial/29-tutorial.lisp
View file

@ -25,12 +25,10 @@
:label (create-label body :content "Change my-count:"))))
(declare (ignore tmp))
;; We set up direct relationships between lisp objects and clog objects
;; any change to i1 will change my-slot
(link-form-element-to-slot i1 lisp-obj my-slot)
;; any change to my-slot will change i1 after transforming
;; my-slot to upercase
(link-slot-to-form-element lisp-obj my-slot i1
:transform #'string-upcase)
;; any change to i1 will change my-slot and any change to my-slot
;; will change i1.
(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