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 nreeame."
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 default-attributes ((model t
))
101 "return the default attributes for a given model using the meta-model's meta-data"
102 (append (mapcar #'(lambda (s)
105 (if (meta-model:foreign-key-p model
(car s
))
108 (string (car s
)) (car s
))))
109 (meta-model:list-slot-types model
))
110 (mapcar #'(lambda (s)
111 (cons s
(append (gen-pslot 'ucw
::has-many
(string s
) s
)
116 (meta-model:list-has-many model
))))
118 (defmethod set-default-attributes ((model t
))
119 (clear-class-attributes model
)
120 (mapcar #'(lambda (x)
121 (setf (find-attribute model
(car x
)) (cdr x
)))
122 (default-attributes model
)))
125 (defgeneric attributes-getter
(model))
132 (defcomponent mewa
()
138 :accessor attributes-getter
139 :initform
#'get-attributes
140 :initarg
:attributes-getter
)
142 :initarg
:global-properties
143 :accessor global-properties
149 (use-instance-class-p
150 :initarg
:use-instance-class-p
151 :accessor use-instance-class-p
153 (initializedp :initform nil
)
154 (modifiedp :accessor modifiedp
:initform nil
)
155 (modifications :accessor modifications
:initform nil
)))
158 (defmethod attributes :around
((self mewa
))
159 (let ((a (call-next-method)))
160 (or a
(funcall (attributes-getter self
) self
))))
162 (defgeneric get-attributes
(mewa))
164 (defmethod get-attributes ((self mewa
))
166 (append (meta-model:list-slots
(instance self
))
167 (meta-model:list-has-many
(instance self
)))
171 (defmethod find-instance-classes ((self mewa
))
173 (it.bese.arnesi.mopp
:compute-class-precedence-list
(class-of (instance self
)))))
175 (defmethod find-all-attributes ((self mewa
))
177 (mapcar #'(lambda (x)
178 (cdr (find-class-attributes x
)))
181 (defun make-attribute (&rest props
&key type
&allow-other-keys
)
183 (cons (gensym) (cons type props
)))
186 (defmethod find-applicable-attributes ((self mewa
))
187 (let ((all-attributes (find-all-attributes self
)))
188 (flet ((gen-att (x) (let ((att (assoc x all-attributes
)))
190 (setf (cddr att
) (plist-union (global-properties self
) (cddr att
)))
192 (if (attributes self
)
194 (mapcar #'(lambda (x)
199 ;;if the car is a keyword then this is an inline def
200 ((and (listp x
) (keywordp (car x
)))
201 (let ((att (apply #'make-attribute x
)))
203 (plist-union (cddr att
) (global-properties self
)))
205 ;; if the plist has a :type
206 ((and (listp x
) (getf (cdr x
) :type
))
207 (let ((new (cdr (apply #'make-attribute
(cdr x
))))
208 (def (gen-att (car x
))))
209 (setf (cdr new
) (plist-union (cdr new
) (cddr def
)))
210 (cons (car def
) new
)))
211 ;;finally if we are just overiding the props
212 ((and (listp x
) (symbolp (car x
)))
213 (let ((new (cdr (apply #'make-attribute
(cdr x
))))
214 (def (gen-att (car x
))))
215 (setf (cdr new
) (plist-union (cdr new
) (cddr def
)))
216 (cons (car def
) (cons (second def
) (cdr new
)))))
224 (defmethod find-slot-presentations ((self mewa
))
225 (mapcar #'(lambda (s)
226 (let ((class-name (or (gethash (second s
) ucw
::*slot-type-mapping
*) 'mewa-object-presentation
)))
227 (apply #'make-instance
229 (append (cddr s
) (list :parent self
)))))
230 (find-applicable-attributes self
)))
234 (defmethod initialize-slots ((self mewa
))
235 (when (use-instance-class-p self
)
237 (append (find-instance-classes self
)
239 (setf (slots self
) (find-slot-presentations self
)))
242 (defmethod make-presentation ((object t
) &key
(type :viewer
) (initargs nil
))
243 (let* ((p (make-instance 'mewa-object-presentation
))
244 (a (progn (setf (slot-value p
'instance
) object
)
246 (assoc type
(find-all-attributes p
))))
248 (i (apply #'make-instance
(second a
) (plist-union initargs
(cddr a
)))))
249 (setf (slot-value i
'instance
) object
)
252 (defmethod make-presentation ((object t
) &key
(type :viewer
) (initargs nil
))
253 (let* ((p (make-instance 'mewa-object-presentation
))
254 (a (progn (setf (slot-value p
'instance
) object
)
256 (assoc type
(find-all-attributes p
))))
258 (i (apply #'make-instance
(or (second a
)
259 ;; if we didnt find the type,
260 ;; use the symbol as a class.
261 (if (eql (symbol-package type
)
262 (find-package 'keyword
))
265 (plist-union initargs
(cddr a
)))))
266 (setf (slot-value i
'instance
) object
)
268 (setf (slot-value i
'initializedp
) t
)
275 (defmethod call-component :before
((from standard-component
) (to mewa
))
276 (unless (slot-value to
'initializedp
)
277 (initialize-slots to
))
278 (setf (slot-value to
'initializedp
) t
)
279 (setf (slots to
) (mapcar #'(lambda (x) (prog2
280 (setf (component.place x
) (component.place from
))
284 (defmacro call-presentation
(object &rest args
)
285 `(present-object ,object
:presentation
(make-presentation ,object
,@args
)))
288 (defcomponent about-dialog
(option-dialog)
289 ((body :initarg
:body
)))
291 (defmethod render-on ((res response
) (self about-dialog
))
292 (render-on res
(slot-value self
'body
))
295 (defaction cancel-save-instance
((self mewa
))
297 ((slot-value (instance self
) 'clsql-sys
::view-database
)
298 (meta-model::update-instance-from-records
(instance self
))
302 (defaction save-instance
((self mewa
))
303 (meta-model:sync-instance
(instance self
))
304 (setf (modifiedp self
) nil
)
308 (defaction ensure-instance-sync
((self mewa
))
309 (when (modifiedp self
)
310 (let ((message (format nil
"Record has been modified, Do you wish to save the changes?<br/> ~a" (print (modifications self
)))))
311 (case (call 'about-dialog
312 :body
(make-presentation (instance self
)
315 :options
'((:save .
"Save changes to Database")
316 (:cancel .
"Cancel all changes")))
318 (cancel-save-instance self
))
320 (save-instance self
))))))
322 (defaction ok
((self mewa
) &optional arg
)
323 "Returns the component if it has not been modified. if it has been, prompt user to save or cancel"
324 (declare (ignore arg
))
325 (ensure-instance-sync self
)
332 (defmethod (setf presentation-slot-value
) :around
(value (slot slot-presentation
) instance
)
334 (presentation-slot-value slot instance
)
336 (new (presentation-slot-value slot instance
)))
338 (unless (equal new old
)
339 (let ((self (ucw::parent slot
)))
340 (setf (modifiedp self
) instance
341 (modifications self
) (append (list new old value slot instance
) (modifications self
)))))))
344 ;; This software is Copyright (c) Drew Crampsie, 2004-2005.
345 ;; You are granted the rights to distribute
346 ;; and use this software as governed by the terms
347 ;; of the Lisp Lesser GNU Public License
348 ;; (http://opensource.franz.com/preamble.html),
349 ;; known as the LLGPL.