4 (defparameter *default-type
* :ucw
)
6 ;;; maps meta-model slot-types to slot-presentation
7 (defparameter *slot-type-map
*
8 '(boolean ucw
::mewa-boolean
9 string ucw
::mewa-string
10 number ucw
::mewa-currency
11 integer ucw
::mewa-integer
12 currency ucw
::mewa-currency
15 ;;; an alist of model-class-name . attributes
16 ;;; should really be a hash-table.
17 (defvar *attribute-map
* (list))
19 ;;; some utilities for merging plists
21 (defun plist-nunion (new-props plist
)
22 (loop for cons on new-props by
#'cddr
23 do
(setf (getf plist
(first cons
)) (second cons
))
24 finally
(return plist
)))
26 (defun plist-union (new-props plist
)
27 "Non-destructive version of plist-nunion"
28 (plist-nunion new-props
(copy-list plist
)))
30 (defun gen-ptype (type)
31 (or (getf *slot-type-map
* type
) type
))
33 (defun gen-presentation-slots (instance)
34 (mapcar #'(lambda (x) (gen-pslot (cadr x
)
37 (meta-model:list-slot-types instance
)))
40 (defun gen-pslot (type label slot-name
)
41 (copy-list `(,(gen-ptype type
)
43 :slot-name
,slot-name
)))
45 (defun gen-presentation-args (instance args
)
46 (declare (ignore instance
))
50 (defun find-or-create-attributes (class-name)
51 "return an exisiting class attribute map or create one.
53 A map is a cons of class-name . attributes.
54 attributes is an alist keyed on the attribute name."
55 (or (assoc class-name
*attribute-map
*)
57 (setf *attribute-map
* (acons class-name
(list (list)) *attribute-map
*))
58 (assoc class-name
*attribute-map
*))))
60 (defgeneric find-class-attributes
(class))
62 (defmethod find-class-attributes ((model t
))
63 (find-or-create-attributes (class-name (class-of model
))))
65 (defmethod find-class-attributes ((model symbol
))
66 (find-or-create-attributes model
))
68 (defmethod clear-class-attributes ((model t
))
69 (setf (cdr (find-class-attributes model
)) nil
))
71 (defmethod add-attribute ((model t
) name def
)
72 (let ((map (find-class-attributes model
)))
73 (setf (cdr map
) (acons name def
(cdr map
)))))
75 (defmethod find-attribute ((model t
) name
)
76 (assoc name
(cdr (find-class-attributes model
))))
78 (defmethod (setf find-attribute
) ((def list
) (model t
) name
)
79 (let ((attr (find-attribute model name
)))
85 (add-attribute model name def
)
86 (find-attribute model name
)))))
88 (defmethod set-attribute ((model t
) name definition
&key
(inherit t
))
89 (setf (find-attribute model name
)
91 (cons (car definition
)
92 (plist-union (cdr definition
)
93 (cddr (find-attribute model name
))))
96 (defmethod perform-set-attributes ((model t
) definitions
)
97 (dolist (def definitions
)
98 (funcall #'set-attribute model
(first def
) (rest def
))))
100 (defmethod set-attribute-properties ((model t
) attribute properties
)
101 (let ((a (find-attribute model attribute
)))
103 (setf (cddr a
) (plist-nunion properties
(cddr a
)))
104 (error "Attribute ~A does not exist" attribute
) )))
106 (defmethod perform-set-attribute-properties ((model t
) definitions
)
107 (dolist (def definitions
)
108 (funcall #'set-attribute-properties model
(car def
) (cdr def
))))
111 (defmethod default-attributes ((model t
))
112 "return the default attributes for a given model using the meta-model's meta-data"
113 (append (mapcar #'(lambda (s)
116 (if (meta-model:foreign-key-p model
(car s
))
119 (string (car s
)) (car s
))))
120 (meta-model:list-slot-types model
))
121 (mapcar #'(lambda (s)
122 (cons s
(append (gen-pslot 'ucw
::has-many
(string s
) s
)
127 (meta-model:list-has-many model
))))
129 (defmethod set-default-attributes ((model t
))
130 "Set the default attributes for MODEL"
131 (clear-class-attributes model
)
132 (mapcar #'(lambda (x)
133 (setf (find-attribute model
(car x
)) (cdr x
)))
134 (default-attributes model
)))
137 (defgeneric attributes-getter
(model))
143 (defcomponent mewa
()
144 ((ucw::instance
:accessor instance
:initarg
:instance
)
150 :accessor attributes-getter
151 :initform
#'get-attributes
152 :initarg
:attributes-getter
)
154 :accessor attribute-slot-map
157 :initarg
:global-properties
158 :accessor global-properties
164 (use-instance-class-p
165 :initarg
:use-instance-class-p
166 :accessor use-instance-class-p
168 (initializedp :initform nil
)
169 (modifiedp :accessor modifiedp
:initform nil
:initarg
:modifiedp
)
170 (modifications :accessor modifications
:initform nil
)))
177 (defmethod attributes :around
((self mewa
))
178 (let ((a (call-next-method)))
179 (or a
(funcall (attributes-getter self
) self
))))
181 (defgeneric get-attributes
(mewa))
183 (defmethod get-attributes ((self mewa
))
185 (append (meta-model:list-slots
(instance self
))
186 (meta-model:list-has-many
(instance self
)))
189 (defmethod find-instance-classes ((self mewa
))
191 (it.bese.arnesi.mopp
:compute-class-precedence-list
(class-of (instance self
)))))
193 (defmethod find-all-attributes ((self mewa
))
195 (mapcar #'(lambda (x)
196 (cdr (find-class-attributes x
)))
199 (defun make-attribute (&rest props
&key type
&allow-other-keys
)
201 (cons (gensym) (cons type props
)))
204 (defmethod find-applicable-attributes ((self mewa
))
205 (let ((all-attributes (find-all-attributes self
)))
206 (flet ((gen-att (x) (let ((att (assoc x all-attributes
)))
208 (setf (cddr att
) (plist-union (global-properties self
) (cddr att
)))
210 (if (attributes self
)
212 (mapcar #'(lambda (x)
217 ;;if the car is a keyword then this is an inline def
218 ((and (listp x
) (keywordp (car x
)))
219 (let ((att (apply #'make-attribute x
)))
221 (plist-union (cddr att
) (global-properties self
)))
223 ;; if the plist has a :type
224 ((and (listp x
) (getf (cdr x
) :type
))
225 (let ((new (cdr (apply #'make-attribute
(cdr x
))))
226 (def (gen-att (car x
))))
227 (setf (cdr new
) (plist-union (cdr new
) (cddr def
)))
228 (cons (car def
) new
)))
229 ;;finally if we are just overiding the props
230 ((and (listp x
) (symbolp (car x
)))
231 (let ((new (cdr (apply #'make-attribute
(cdr x
))))
232 (def (gen-att (car x
))))
233 (setf (cdr new
) (plist-union (cdr new
) (cddr def
)))
234 (cons (car def
) (cons (second def
) (cdr new
)))))
242 (defmethod find-slot-presentation-for-attribute ((self mewa
) attribute
)
244 (or (gethash (second attribute
) ucw
::*slot-type-mapping
*)
245 (error "Can't find slot type for ~A" (second attribute
)))))
247 (cons (first attribute
) (apply #'make-instance
249 (append (cddr attribute
) (list :parent self
:size
30))))))
251 (defmethod find-slot-presentations ((self mewa
))
252 (mapcar #'(lambda (a) (find-slot-presentation-for-attribute self a
))
253 (find-applicable-attributes self
)))
255 (defmethod find-attribute-slot ((self mewa
) (attribute symbol
))
256 (cdr (assoc attribute
(attribute-slot-map self
))))
258 (defmethod initialize-slots ((self mewa
))
259 (when (instance self
)
260 (when (use-instance-class-p self
)
262 (append (find-instance-classes self
)
264 (setf (attribute-slot-map self
) (find-slot-presentations self
))
265 (setf (slots self
) (mapcar #'(lambda (x)(cdr x
)) (attribute-slot-map self
)))))
268 (defmethod make-presentation ((object t
) &key
(type :viewer
) (initargs nil
))
269 (let* ((p (make-instance 'mewa-object-presentation
))
270 (a (progn (setf (slot-value p
'instance
) object
)
272 (assoc type
(find-all-attributes p
))))
274 (i (apply #'make-instance
(second a
) (plist-union initargs
(cddr a
)))))
275 (setf (slot-value i
'instance
) object
)
278 (defmethod make-presentation ((object t
) &key
(type :viewer
) (initargs nil
))
279 (let* ((p (make-instance 'mewa-object-presentation
))
280 (a (progn (setf (slot-value p
'instance
) object
)
282 (assoc type
(find-all-attributes p
))))
284 (i (apply #'make-instance
(or (second a
)
285 ;; if we didnt find the type,
286 ;; use the symbol as a class.
287 (if (eql (symbol-package type
)
288 (find-package 'keyword
))
291 (plist-union initargs
(cddr a
)))))
292 (setf (slot-value i
'instance
) object
)
294 (setf (slot-value i
'initializedp
) t
)
298 (defmethod initialize-slots-place ((place ucw
::place
) (mewa mewa
))
299 (setf (slots mewa
) (mapcar #'(lambda (x)
301 (setf (component.place x
) place
)))
304 (defmethod call-component :before
((from standard-component
) (to mewa
))
305 (unless (slot-value to
'initializedp
)
306 (initialize-slots to
))
307 (setf (slot-value to
'initializedp
) t
)
308 (setf (slots to
) (mapcar #'(lambda (x) (prog2
309 (setf (component.place x
) (component.place from
))
313 (defmacro call-presentation
(object &rest args
)
314 `(present-object ,object
:presentation
(make-presentation ,object
,@args
)))
317 (defcomponent about-dialog
(option-dialog)
318 ((body :initarg
:body
)))
320 (defmethod render-on ((res response
) (self about-dialog
))
322 (render-on res
(slot-value self
'body
)))
325 (defmethod instance-is-stored-p ((instance clsql
:standard-db-object
))
326 (slot-value instance
'clsql-sys
::view-database
))
328 (defmethod instance-is-stored-p ((mewa mewa
))
329 (instance-is-stored-p (instance mewa
)))
331 (defaction cancel-save-instance
((self mewa
))
333 ((instance-is-stored-p (instance self
))
334 (meta-model::update-instance-from-records
(instance self
))
338 (defaction save-instance
((self mewa
))
339 (meta-model:sync-instance
(instance self
))
340 (setf (modifiedp self
) nil
)
344 (defaction ensure-instance-sync
((self mewa
))
345 (when (modifiedp self
)
346 (let ((message (format nil
"Record has been modified, Do you wish to save the changes?")))
347 (case (call 'about-dialog
348 :body
(make-presentation (instance self
)
351 :options
'((:save .
"Save changes to Database")
352 (:cancel .
"Cancel all changes")))
354 (cancel-save-instance self
))
356 (save-instance self
))))))
358 (defaction ok
((self mewa
) &optional arg
)
359 "Returns the component if it has not been modified. if it has been, prompt user to save or cancel"
360 (declare (ignore arg
))
361 (ensure-instance-sync self
)
364 (defmethod (setf presentation-slot-value
) :around
(value (slot slot-presentation
) instance
)
366 (presentation-slot-value slot instance
)
368 (new (presentation-slot-value slot instance
)))
370 (unless (equal new old
)
371 (let ((self (ucw::parent slot
)))
372 (setf (modifiedp self
) instance
373 (modifications self
) (append (list new old value slot instance
) (modifications self
)))))))
375 ;;;; * Finally set up some defaults
377 (setf (find-attribute t
:viewer
)
378 '(mewa-object-presentation :global-properties
(:editablep nil
))
379 (find-attribute t
:editor
)
380 '(mewa-object-presentation :global-properties
(:editablep t
))
381 (find-attribute t
:creator
)
382 '(mewa-object-presentation :global-properties
(:editablep t
))
383 (find-attribute t
:one-line
)
384 '(mewa-one-line-presentation)
385 (find-attribute t
:listing
)
386 '(mewa-list-presentation :global-properties
(:editablep nil
) :editablep t
)
387 (find-attribute t
:search-model
)
388 '(mewa-object-presentation))
394 ;; This software is Copyright (c) Drew Crampsie, 2004-2005.
395 ;; You are granted the rights to distribute
396 ;; and use this software as governed by the terms
397 ;; of the Lisp Lesser GNU Public License
398 ;; (http://opensource.franz.com/preamble.html),
399 ;; known as the LLGPL.