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 add-attribute ((model t
) name def
)
69 (let ((map (find-class-attributes model
)))
70 (setf (cdr map
) (acons name def
(cdr map
)))))
72 (defmethod find-attribute ((model t
) name
)
73 (assoc name
(cdr (find-class-attributes model
))))
75 (defmethod (setf find-attribute
) ((def list
) (model t
) name
)
76 (let ((attr (find-attribute model name
)))
82 (add-attribute model name def
)
83 (find-attribute model name
)))))
85 (defmethod set-attribute ((model t
) name definition
&key
(inherit t
))
86 (setf (find-attribute model name
)
88 (cons (car definition
)
89 (plist-union (cdr definition
)
90 (cddr (find-attribute model name
))))
93 (defmethod perform-set-attributes ((model t
) definitions
)
94 (dolist (def definitions
)
95 (funcall #'set-attribute model
(first def
) (rest def
))))
97 (defmethod default-attributes ((model t
))
98 "return the default attributes for a given model using the meta-model's meta-data"
99 (append (mapcar #'(lambda (s)
102 (if (meta-model:foreign-key-p model
(car s
))
105 (string (car s
)) (car s
))))
106 (meta-model:list-slot-types model
))
107 (mapcar #'(lambda (s)
108 (cons s
(append (gen-pslot 'ucw
::has-many
(string s
) s
)
113 (meta-model:list-has-many model
))))
115 (defmethod set-default-attributes ((model t
))
116 (mapcar #'(lambda (x)
117 (setf (find-attribute model
(car x
)) (cdr x
)))
118 (default-attributes model
)))
121 (defgeneric attributes-getter
(model))
128 (defcomponent mewa
()
134 :accessor attributes-getter
135 :initform
#'get-attributes
136 :initarg
:attributes-getter
)
138 :initarg
:global-properties
139 :accessor global-properties
145 (use-instance-class-p
146 :initarg
:use-instance-class-p
147 :accessor use-instance-class-p
149 (initializedp :initform nil
)
150 (modifiedp :accessor modifiedp
:initform nil
)
151 (modifications :accessor modifications
:initform nil
)))
154 (defmethod attributes :around
((self mewa
))
155 (let ((a (call-next-method)))
156 (or a
(funcall (attributes-getter self
) self
))))
158 (defgeneric get-attributes
(mewa))
160 (defmethod get-attributes ((self mewa
))
162 (append (meta-model:list-slots
(instance self
))
163 (meta-model:list-has-many
(instance self
)))
167 (defmethod find-instance-classes ((self mewa
))
169 (it.bese.arnesi.mopp
:compute-class-precedence-list
(class-of (instance self
)))))
171 (defmethod find-all-attributes ((self mewa
))
173 (mapcar #'(lambda (x)
174 (cdr (find-class-attributes x
)))
177 (defun make-attribute (&rest props
&key type
&allow-other-keys
)
179 (cons (gensym) (cons type props
)))
182 (defmethod find-applicable-attributes ((self mewa
))
183 (let ((all-attributes (find-all-attributes self
)))
184 (flet ((gen-att (x) (let ((att (assoc x all-attributes
)))
186 (setf (cddr att
) (plist-union (global-properties self
) (cddr att
)))
188 (if (attributes self
)
190 (mapcar #'(lambda (x)
195 ;;if the car is a keyword then this is an inline def
196 ((and (listp x
) (keywordp (car x
)))
197 (let ((att (apply #'make-attribute x
)))
199 (plist-union (cddr att
) (global-properties self
)))
201 ;; if the plist has a :type
202 ((and (listp x
) (getf (cdr x
) :type
))
203 (let ((new (cdr (apply #'make-attribute
(cdr x
))))
204 (def (gen-att (car x
))))
205 (setf (cdr new
) (plist-union (cdr new
) (cddr def
)))
206 (cons (car def
) new
)))
207 ;;finally if we are just overiding the props
208 ((and (listp x
) (symbolp (car x
)))
209 (let ((new (cdr (apply #'make-attribute
(cdr x
))))
210 (def (gen-att (car x
))))
211 (setf (cdr new
) (plist-union (cdr new
) (cddr def
)))
212 (cons (car def
) (cons (second def
) (cdr new
)))))
220 (defmethod find-slot-presentations ((self mewa
))
221 (mapcar #'(lambda (s)
222 (let ((class-name (or (gethash (second s
) ucw
::*slot-type-mapping
*) 'mewa-object-presentation
)))
223 (apply #'make-instance
225 (append (cddr s
) (list :parent self
)))))
226 (find-applicable-attributes self
)))
230 (defmethod initialize-slots ((self mewa
))
231 (when (use-instance-class-p self
)
233 (append (find-instance-classes self
)
235 (setf (slots self
) (find-slot-presentations self
)))
238 (defmethod make-presentation ((object t
) &key
(type :viewer
) (initargs nil
))
239 (let* ((p (make-instance 'mewa-object-presentation
))
240 (a (progn (setf (slot-value p
'instance
) object
)
242 (assoc type
(find-all-attributes p
))))
244 (i (apply #'make-instance
(second a
) (plist-union initargs
(cddr a
)))))
245 (setf (slot-value i
'instance
) object
)
248 (defmethod make-presentation ((object t
) &key
(type :viewer
) (initargs nil
))
249 (let* ((p (make-instance 'mewa-object-presentation
))
250 (a (progn (setf (slot-value p
'instance
) object
)
252 (assoc type
(find-all-attributes p
))))
254 (i (apply #'make-instance
(or (second a
)
255 ;; if we didnt find the type,
256 ;; use the symbol as a class.
257 (if (eql (symbol-package type
)
258 (find-package 'keyword
))
261 (plist-union initargs
(cddr a
)))))
262 (setf (slot-value i
'instance
) object
)
264 (setf (slot-value i
'initializedp
) t
)
271 (defmethod call-component :before
((from standard-component
) (to mewa
))
272 (unless (slot-value to
'initializedp
)
273 (initialize-slots to
))
274 (setf (slot-value to
'initializedp
) t
)
275 (setf (slots to
) (mapcar #'(lambda (x) (prog2
276 (setf (component.place x
) (component.place from
))
280 (defmacro call-presentation
(object &rest args
)
281 `(present-object ,object
:presentation
(make-presentation ,object
,@args
)))
283 (defaction cancel-save-instance
((self mewa
))
285 ((slot-value (instance self
) 'clsql-sys
::view-database
)
286 (meta-model::update-instance-from-records
(instance self
))
290 (defaction save-instance
((self mewa
))
291 (meta-model:sync-instance
(instance self
))
292 (setf (modifiedp self
) nil
)
296 (defaction ensure-instance-sync
((self mewa
))
297 (when (modifiedp self
)
298 (let ((message (format nil
"Record has been modified, Do you wish to save the changes?<br/> ~a" (print (modifications self
)))))
299 (case (call 'option-dialog
301 :options
'((:save .
"Save changes to Database")
302 (:cancel .
"Cancel all changes")))
304 (cancel-save-instance self
))
306 (save-instance self
))))))
308 (defaction ok
((self mewa
) &optional arg
)
309 "Returns the component if it has not been modified. if it has been, prompt user to save or cancel"
310 (declare (ignore arg
))
311 (ensure-instance-sync self
)
318 (defmethod (setf presentation-slot-value
) :around
(value (slot slot-presentation
) instance
)
320 (presentation-slot-value slot instance
)
322 (new (presentation-slot-value slot instance
)))
324 (unless (equal new old
)
325 (let ((self (ucw::parent slot
)))
326 (setf (modifiedp self
) instance
327 (modifications self
) (append (list (type-of new
) (type-of old
) (type-of value
) slot instance
)))))))
330 ;; This software is Copyright (c) Drew Crampsie, 2004-2005.
331 ;; You are granted the rights to distribute
332 ;; and use this software as governed by the terms
333 ;; of the Lisp Lesser GNU Public License
334 ;; (http://opensource.franz.com/preamble.html),
335 ;; known as the LLGPL.