Commit | Line | Data |
---|---|---|
13ebe12f DC |
1 | (declaim (optimize (speed 2) (space 3) (safety 0))) |
2 | ||
5dea194e | 3 | (in-package :lisp-on-lines) |
13ebe12f | 4 | |
579597e3 | 5 | (defparameter *default-type* :ucw) |
6 | ||
15bc66bd DC |
7 | ;;;; I think these are unused now |
8 | (defmethod perform-set-attributes ((occurence-name t) definitions) | |
9 | (dolist (def definitions) | |
10 | (funcall #'set-attribute occurence-name (first def) (rest def)))) | |
11 | ||
12 | (defmethod perform-set-attribute-properties ((occurence-name t) definitions) | |
13 | (dolist (def definitions) | |
14 | (funcall #'set-attribute-properties occurence-name (car def) (cdr def)))) | |
15 | ||
16 | ;;;; PLIST Utilities. | |
579597e3 | 17 | |
18 | (defun plist-nunion (new-props plist) | |
15bc66bd DC |
19 | "Destructive Merge of plists. PLIST is modified and returned. |
20 | NEW-PROPS is merged into PLIST such that any properties | |
21 | in both PLIST and NEW-PROPS get the value in NEW-PROPS. | |
22 | The other properties in PLIST are left untouched." | |
d0c40011 | 23 | (loop for cons on new-props by #'cddr |
579597e3 | 24 | do (setf (getf plist (first cons)) (second cons)) |
25 | finally (return plist))) | |
26 | ||
27 | (defun plist-union (new-props plist) | |
28 | "Non-destructive version of plist-nunion" | |
29 | (plist-nunion new-props (copy-list plist))) | |
30 | ||
579597e3 | 31 | |
15bc66bd DC |
32 | ;;;; * Occurences |
33 | ||
34 | (defvar *occurence-map* (make-hash-table) | |
35 | "Presentations are created by associating an 'occurence' | |
36 | with an instance of a class. This is usually keyed off class-name, | |
37 | although an arbitrary occurence can be used with an arbitrary class.") | |
38 | ||
39 | (define-layered-class | |
40 | standard-occurence () | |
41 | ((attribute-map :accessor attribute-map :initform (make-hash-table))) | |
42 | (:documentation | |
43 | "an occurence holds the attributes like a class holds slot-definitions. | |
44 | Attributes are the metadata used to display, validate, and otherwise manipulate actual values stored in lisp objects.")) | |
45 | ||
46 | (defun find-or-create-occurence (name) | |
47 | "Returns the occurence associated with this name." | |
48 | (let ((occurence (gethash name *occurence-map*))) | |
49 | (if occurence | |
50 | occurence | |
51 | (let ((new-occurence (make-instance 'standard-occurence))) | |
52 | (setf (gethash name *occurence-map*) new-occurence) | |
53 | new-occurence)))) | |
54 | ||
55 | (defun clear-occurence (occurence) | |
56 | "removes all attributes from the occurence" | |
57 | (setf (attribute-map occurence) (make-hash-table))) | |
58 | ||
59 | (defgeneric find-occurence (name) | |
bf12489a DC |
60 | (:method (thing) |
61 | nil) | |
15bc66bd DC |
62 | (:method ((name symbol)) |
63 | (find-or-create-occurence name)) | |
bf12489a | 64 | (:method ((instance standard-object)) |
15bc66bd DC |
65 | (find-or-create-occurence (class-name (class-of instance))))) |
66 | ||
67 | ||
68 | ;;;; * Attributes | |
69 | ||
70 | (define-layered-class | |
71 | standard-attribute () | |
72 | ((name :layered-accessor attribute.name :initarg :name :initform "attribute") | |
73 | (type :layered-accessor attribute.type :initarg :type :initform t :type symbol) | |
74 | (plist :layered-accessor attribute.plist :initarg :plist :initform nil)) | |
75 | (:documentation "Attributes are used to display a part of a thing, such as a slot of an object, a text label, the car of a list, etc.")) | |
76 | ||
6f63d3a4 DC |
77 | (defmacro defattribute (name supers slots &rest args) |
78 | (let ((type (or (second (assoc :type-name args)) name) )) | |
79 | `(progn | |
80 | ||
81 | (define-layered-class | |
82 | ;;;; TODO: naive way of making sure s-a is a superclass | |
83 | ,name ,(or supers '(standard-attribute)) | |
84 | ,slots | |
85 | #+ (or) ,@ (cdr args) ) | |
86 | (defmethod find-attribute-class-for-type ((type (eql ',type))) | |
87 | ',name)))) | |
15bc66bd DC |
88 | |
89 | (defmethod print-object ((self standard-attribute) stream) | |
90 | (print-unreadable-object (self stream :type t) | |
91 | (with-slots (name type) self | |
92 | (format stream "~A ~A" name type)))) | |
93 | ||
94 | (define-layered-class | |
95 | presentation-attribute (standard-attribute) | |
96 | () | |
97 | (:documentation "Presentation Attributes are used to display objects | |
98 | using the attributes defined in an occurence. Presentation Attributes are always named using keywords.")) | |
99 | ||
100 | (defun clear-attributes (name) | |
101 | "removes all attributes from an occurance" | |
102 | (clear-occurence (find-occurence name))) | |
103 | ||
6f63d3a4 DC |
104 | (defmethod find-attribute-class-for-type (type) |
105 | nil) | |
106 | ||
15bc66bd DC |
107 | (defmethod find-attribute-class-for-name (name) |
108 | "presentation attributes are named using keywords" | |
109 | (if (keywordp name) | |
110 | 'presentation-attribute | |
111 | 'standard-attribute)) | |
112 | ||
6f63d3a4 DC |
113 | (defun make-attribute (&key name type plist) |
114 | (make-instance (or (find-attribute-class-for-type type) | |
115 | (find-attribute-class-for-name name)) | |
116 | :name name :type type :plist plist)) | |
117 | ||
15bc66bd DC |
118 | (defmethod ensure-attribute ((occurence standard-occurence) name type plist) |
119 | "Creates an attribute in the given occurence" | |
120 | (setf (gethash name (attribute-map occurence)) | |
6f63d3a4 | 121 | (make-attribute :name name :type type :plist plist))) |
15bc66bd DC |
122 | |
123 | (defmethod find-attribute ((occurence standard-occurence) name) | |
124 | (gethash name (attribute-map occurence))) | |
125 | ||
126 | (defmethod find-all-attributes ((occurence standard-occurence)) | |
127 | (loop for att being the hash-values of (attribute-map occurence) | |
128 | collect att)) | |
129 | ||
130 | (defmethod ensure-attribute (occurence-name name type plist) | |
131 | (ensure-attribute | |
132 | (find-occurence occurence-name) | |
133 | name | |
134 | type | |
135 | plist)) | |
136 | ||
137 | ;;;; The following functions make up the public interface to the | |
138 | ;;;; MEWA Attribute Occurence system. | |
139 | ||
140 | (defmethod find-all-attributes (occurence-name) | |
141 | (find-all-attributes (find-occurence occurence-name))) | |
142 | ||
143 | (defmethod find-attribute (occurence-name attribute-name) | |
144 | "Returns the ATTRIBUTE named by ATTRIBUTE-NAME in OCCURANCE-name" | |
145 | (find-attribute (find-occurence occurence-name) attribute-name)) | |
146 | ||
147 | (defmethod (setf find-attribute) ((def list) occurence-name attribute-name) | |
148 | (ensure-attribute occurence-name attribute-name (first def) (rest def))) | |
149 | ||
150 | (defmethod set-attribute (occurence-name attribute-name definition &key (inherit t)) | |
151 | (let ((att (find-attribute occurence-name attribute-name))) | |
152 | (setf (find-attribute occurence-name attribute-name) | |
153 | (if (and att inherit) | |
579597e3 | 154 | (cons (car definition) |
155 | (plist-union (cdr definition) | |
15bc66bd DC |
156 | (attribute.plist att))) |
157 | definition)))) | |
579597e3 | 158 | |
15bc66bd DC |
159 | (defmethod set-attribute-properties ((occurence-name t) attribute properties) |
160 | (let ((a (find-attribute occurence-name attribute))) | |
34e8e2d6 | 161 | (if a |
15bc66bd DC |
162 | (setf (attribute.plist a) (plist-nunion properties (attribute.plist a))) |
163 | (error "Attribute ~A does not exist" attribute)))) | |
fc3e754f | 164 | |
15bc66bd | 165 | (defmethod perform-define-attributes ((occurence-name t) attributes) |
fc3e754f DC |
166 | (loop for attribute in attributes |
167 | do (destructuring-bind (name type &rest args) | |
168 | attribute | |
169 | (cond ((eq type t) | |
170 | ;;use the existing (default) type | |
15bc66bd | 171 | (set-attribute-properties occurence-name name args)) |
fc3e754f DC |
172 | ((not (null type)) |
173 | ;;set the type as well | |
15bc66bd | 174 | (set-attribute occurence-name name (cons type args))))))) |
fc3e754f | 175 | |
15bc66bd | 176 | (defmacro define-attributes (occurence-names &body attribute-definitions) |
fc3e754f | 177 | `(progn |
15bc66bd DC |
178 | ,@(loop for occurence-name in occurence-names |
179 | collect `(perform-define-attributes (quote ,occurence-name) (quote ,attribute-definitions))))) | |
180 | ||
181 | ||
182 | (defmethod setter (attribute) | |
6f63d3a4 | 183 | (warn "Setting ~A in ~A" attribute *context*) |
15bc66bd DC |
184 | (let ((setter (getf (attribute.plist attribute) :setter)) |
185 | (slot-name (getf (attribute.plist attribute) :slot-name))) | |
186 | (cond (setter | |
187 | setter) | |
188 | (slot-name | |
189 | #'(lambda (value object) | |
190 | (setf (slot-value object slot-name) value))) | |
191 | (t | |
192 | #'(lambda (value object) | |
193 | (warn "Can't find anywere to set ~A in ~A using ~A" value object attribute)))))) | |
194 | ||
195 | (defmethod getter (attribute) | |
196 | (let ((getter (getf (attribute.plist attribute) :getter)) | |
197 | (slot-name (getf (attribute.plist attribute) :slot-name))) | |
198 | (cond (getter | |
199 | getter) | |
200 | (slot-name | |
201 | #'(lambda (object) | |
202 | (when (slot-boundp object slot-name) | |
203 | (slot-value object slot-name))))))) | |
204 | ||
d5e996b3 | 205 | |
6f63d3a4 DC |
206 | (define-layered-function attribute-value (instance attribute) |
207 | (:documentation " Like SLOT-VALUE for instances, the base method calls GETTER.")) | |
208 | ||
209 | ||
210 | ||
211 | (define-layered-method attribute-value (instance (attribute standard-attribute)) | |
212 | (funcall (getter attribute) instance)) | |
213 | ||
214 | (define-layered-function (setf attribute-value) (value instance attribute)) | |
215 | ||
216 | (define-layered-method (setf attribute-value) (value instance (attribute standard-attribute)) | |
217 | (funcall (setter attribute) value instance)) | |
d5e996b3 DC |
218 | |
219 | ||
220 | ;;;; ** Default Attributes | |
221 | ||
222 | ||
223 | ;;;; The default mewa class contains the types use as defaults. | |
224 | ;;;; maps meta-model slot-types to slot-presentation | |
225 | ||
226 | (defvar *default-attributes-class-name* 'default) | |
227 | ||
15bc66bd DC |
228 | (defmacro with-default-attributes ((occurence-name) &body body) |
229 | `(let ((*default-attributes-class-name* ',occurence-name)) | |
230 | ,@body)) | |
231 | ||
d5e996b3 DC |
232 | (define-attributes (default) |
233 | (boolean mewa-boolean) | |
234 | (string mewa-string) | |
235 | (number mewa-currency) | |
236 | (integer mewa-integer) | |
237 | (currency mewa-currency) | |
238 | (clsql:generalized-boolean mewa-boolean) | |
239 | (foreign-key foreign-key) | |
240 | (:viewer mewa-viewer) | |
241 | (:editor mewa-editor) | |
242 | (:creator mewa-creator) | |
63c06c54 | 243 | (:as-string mewa-one-line-presentation) |
d5e996b3 DC |
244 | (:one-line mewa-one-line-presentation) |
245 | (:listing mewa-list-presentation :global-properties (:editablep nil) :editablep t) | |
246 | (:search-model mewa-object-presentation)) | |
247 | ||
15bc66bd DC |
248 | (defun find-presentation-attributes (occurence-name) |
249 | (loop for att in (find-all-attributes occurence-name) | |
250 | when (typep att 'presentation-attribute) | |
251 | collect att)) | |
d5e996b3 | 252 | |
15bc66bd DC |
253 | (defun attribute-to-definition (attribute) |
254 | (nconc (list (attribute.name attribute) | |
255 | (attribute.type attribute)) | |
256 | (attribute.plist attribute))) | |
d5e996b3 | 257 | |
15bc66bd DC |
258 | (defun find-default-presentation-attribute-definitions () |
259 | (if (eql *default-attributes-class-name* 'default) | |
260 | (mapcar #'attribute-to-definition (find-presentation-attributes 'default)) | |
261 | (remove-duplicates (mapcar #'attribute-to-definition | |
262 | (append | |
263 | (find-presentation-attributes 'default) | |
264 | (find-presentation-attributes | |
265 | *default-attributes-class-name*)))))) | |
d5e996b3 | 266 | (defun gen-ptype (type) |
15bc66bd DC |
267 | (let* ((type (if (consp type) (car type) type)) |
268 | (possible-default (find-attribute *default-attributes-class-name* type)) | |
269 | (real-default (find-attribute 'default type))) | |
270 | (cond | |
271 | (possible-default | |
272 | (attribute.type possible-default)) | |
273 | (real-default | |
274 | (attribute.type real-default)) | |
275 | (t type)))) | |
d5e996b3 DC |
276 | |
277 | (defun gen-presentation-slots (instance) | |
278 | (mapcar #'(lambda (x) (gen-pslot (cadr x) | |
279 | (string (car x)) | |
280 | (car x))) | |
281 | (meta-model:list-slot-types instance))) | |
282 | ||
34e8e2d6 | 283 | |
d5e996b3 DC |
284 | (defun gen-pslot (type label slot-name) |
285 | (copy-list `(,(gen-ptype type) | |
286 | :label ,label | |
287 | :slot-name ,slot-name))) | |
288 | ||
6f63d3a4 | 289 | |
579597e3 | 290 | |
19531fbd | 291 | ;;;presentations |
579597e3 | 292 | (defcomponent mewa () |
38a016c7 | 293 | ((instance :accessor instance :initarg :instance) |
2cb4247d | 294 | (attributes |
579597e3 | 295 | :initarg :attributes |
296 | :accessor attributes | |
297 | :initform nil) | |
298 | (attributes-getter | |
299 | :accessor attributes-getter | |
300 | :initform #'get-attributes | |
301 | :initarg :attributes-getter) | |
569ad9e6 DC |
302 | (attribute-slot-map |
303 | :accessor attribute-slot-map | |
304 | :initform nil) | |
579597e3 | 305 | (global-properties |
306 | :initarg :global-properties | |
307 | :accessor global-properties | |
308 | :initform nil) | |
309 | (classes | |
310 | :initarg :classes | |
311 | :accessor classes | |
312 | :initform nil) | |
313 | (use-instance-class-p | |
314 | :initarg :use-instance-class-p | |
315 | :accessor use-instance-class-p | |
316 | :initform t) | |
317 | (initializedp :initform nil) | |
8e6e6b56 | 318 | (modifiedp :accessor modifiedp :initform nil :initarg :modifiedp) |
d1bb68e0 | 319 | (modifications :accessor modifications :initform nil))) |
579597e3 | 320 | |
579597e3 | 321 | |
322 | (defmethod attributes :around ((self mewa)) | |
323 | (let ((a (call-next-method))) | |
324 | (or a (funcall (attributes-getter self) self)))) | |
325 | ||
19531fbd | 326 | (defgeneric get-attributes (mewa)) |
327 | ||
579597e3 | 328 | (defmethod get-attributes ((self mewa)) |
329 | (if (instance self) | |
330 | (append (meta-model:list-slots (instance self)) | |
331 | (meta-model:list-has-many (instance self))) | |
332 | nil)) | |
333 | ||
579597e3 | 334 | (defmethod find-instance-classes ((self mewa)) |
335 | (mapcar #'class-name | |
336 | (it.bese.arnesi.mopp:compute-class-precedence-list (class-of (instance self))))) | |
337 | ||
15bc66bd DC |
338 | (defun make-presentation-for-attribute-list-item |
339 | (occurence att-name plist parent-presentation &optional type) | |
340 | (declare (type list plist) (type symbol att-name)) | |
341 | "This is a ucw specific function that will eventually be factored elsewhere." | |
342 | (let* ((attribute (find-attribute occurence att-name)) | |
343 | (type (when attribute (or type (attribute.type attribute)))) | |
344 | (class-name | |
345 | (or (gethash (if (consp type) | |
346 | (car type) | |
347 | type) | |
348 | *presentation-slot-type-mapping*) | |
349 | (error "Can't find slot type for ~A in ~A from ~A" att-name occurence parent-presentation)))) | |
350 | ||
351 | (cons (attribute.name attribute) (apply #'make-instance | |
352 | class-name | |
353 | (append (plist-nunion | |
354 | plist | |
355 | (plist-union | |
356 | (global-properties parent-presentation) | |
357 | (attribute.plist attribute))) | |
358 | (list :size 30 :parent parent-presentation)))))) | |
359 | ||
360 | (defmethod find-applicable-attributes-using-attribute-list (occurence attribute-list) | |
361 | "Returns a list of functions that, when called with an object presentation, | |
362 | returns the ucw slot presentation that will be used to present this attribute | |
363 | in that object presentation." | |
364 | (loop for att in attribute-list | |
365 | with funs = (list) | |
366 | do (let ((att att)) (cond | |
367 | ;;simple casee | |
368 | ((symbolp att) | |
369 | (push #'(lambda (p) | |
370 | (make-presentation-for-attribute-list-item occurence att nil p)) | |
371 | funs)) | |
372 | ;;if the car is a keyword then this is an inline def | |
373 | ;; drewc nov 12 2005: | |
374 | ;; i never used this, and never told anybody about it. | |
375 | ;; removing it. | |
376 | #+ (or) ((and (listp x) (keywordp (car x))) | |
377 | (let ((att (apply #'make-attribute x))) | |
378 | (setf (cddr att) | |
379 | (plist-union (cddr att) (global-properties self))) | |
380 | att)) | |
381 | ||
382 | ;; if the plist has a :type | |
383 | ((and (listp att) (getf (cdr att) :type)) | |
384 | (let ((type (getf (cdr att) :type))) | |
385 | (push #'(lambda (p) | |
386 | (make-presentation-for-attribute-list-item | |
387 | occurence (first att) | |
388 | (cdr att) | |
389 | p | |
390 | type)) | |
391 | funs))) | |
392 | ;;finally if we are just overiding the props | |
393 | ((and (listp att) (symbolp (car att))) | |
394 | (push #'(lambda (p) | |
395 | (make-presentation-for-attribute-list-item occurence (first att) (rest att) p)) | |
396 | funs)))) | |
397 | finally (return (nreverse funs)))) | |
398 | ||
399 | ||
400 | (defun find-attribute-names (mewa) | |
401 | (mapcar #'(lambda (x) | |
402 | (if (listp x) | |
403 | (first x) | |
404 | x)) | |
405 | (attributes mewa))) | |
579597e3 | 406 | |
407 | (defmethod find-applicable-attributes ((self mewa)) | |
15bc66bd DC |
408 | (if (attributes self) |
409 | (find-applicable-attributes-using-attribute-list (instance self) (attributes self)) | |
410 | (find-applicable-attributes-using-attribute-list (instance (get-attributes self))))) | |
411 | ||
569ad9e6 | 412 | |
579597e3 | 413 | (defmethod find-slot-presentations ((self mewa)) |
15bc66bd | 414 | (mapcar #'(lambda (a) (funcall a self)) |
579597e3 | 415 | (find-applicable-attributes self))) |
416 | ||
569ad9e6 DC |
417 | (defmethod find-attribute-slot ((self mewa) (attribute symbol)) |
418 | (cdr (assoc attribute (attribute-slot-map self)))) | |
579597e3 | 419 | |
420 | (defmethod initialize-slots ((self mewa)) | |
65792e79 DC |
421 | (when (instance self) |
422 | (when (use-instance-class-p self) | |
423 | (setf (classes self) | |
424 | (append (find-instance-classes self) | |
425 | (classes self)))) | |
426 | (setf (attribute-slot-map self) (find-slot-presentations self)) | |
427 | (setf (slots self) (mapcar #'(lambda (x)(cdr x)) (attribute-slot-map self ))))) | |
cf5da3ed DC |
428 | |
429 | ||
19531fbd | 430 | (defmethod make-presentation ((object t) &key (type :viewer) (initargs nil)) |
598f1fa8 | 431 | ;(warn "Initargs : ~A" initargs) |
15bc66bd DC |
432 | (let* ((a (find-attribute object type)) |
433 | (i (apply #'make-instance | |
434 | (if a | |
435 | (attribute.type a) | |
436 | type) | |
437 | (plist-union initargs (when a | |
438 | (attribute.plist a)))))) | |
0fd9d744 | 439 | |
19531fbd | 440 | (setf (slot-value i 'instance) object) |
2acd3ba2 | 441 | (initialize-slots i) |
442 | (setf (slot-value i 'initializedp) t) | |
19531fbd | 443 | i)) |
444 | ||
5dea194e | 445 | (defmethod make-presentation ((list list) &key (type :listing) (initargs nil)) |
cf5da3ed DC |
446 | (let ((args (append |
447 | `(:type ,type) | |
448 | `(:initargs | |
449 | (:instances ,list | |
450 | ,@initargs))))) | |
451 | ||
452 | (apply #'make-presentation (car list) args))) | |
19531fbd | 453 | |
8e6e6b56 DC |
454 | (defmethod initialize-slots-place ((place ucw::place) (mewa mewa)) |
455 | (setf (slots mewa) (mapcar #'(lambda (x) | |
456 | (prog1 x | |
457 | (setf (component.place x) place))) | |
458 | (slots mewa)))) | |
459 | ||
68a53dce | 460 | (arnesi:defmethod/cc call-component :before ((from standard-component) (to mewa)) |
579597e3 | 461 | (unless (slot-value to 'initializedp) |
462 | (initialize-slots to)) | |
463 | (setf (slot-value to 'initializedp) t) | |
68a53dce DC |
464 | (initialize-slots-place (component.place from) to) |
465 | to) | |
466 | ||
467 | ||
579597e3 | 468 | |
469 | (defmacro call-presentation (object &rest args) | |
ae09804a | 470 | `(present-object ,object :presentation (make-presentation ,object ,@args))) |
471 | ||
4e2ecf69 DC |
472 | |
473 | (defcomponent about-dialog (option-dialog) | |
474 | ((body :initarg :body))) | |
475 | ||
476 | (defmethod render-on ((res response) (self about-dialog)) | |
d75822e6 DC |
477 | (call-next-method) |
478 | (render-on res (slot-value self 'body))) | |
4e2ecf69 | 479 | |
569ad9e6 | 480 | |
ae09804a | 481 | (defaction cancel-save-instance ((self mewa)) |
1679abef | 482 | (cond |
5dea194e | 483 | ((meta-model::persistentp (instance self)) |
1679abef | 484 | (meta-model::update-instance-from-records (instance self)) |
485 | (answer self)) | |
486 | (t (answer nil)))) | |
ae09804a | 487 | |
488 | (defaction save-instance ((self mewa)) | |
7129498f | 489 | (meta-model:sync-instance (instance self)) |
8e6e6b56 DC |
490 | (setf (modifiedp self) nil) |
491 | (answer self)) | |
ae09804a | 492 | |
d5e996b3 DC |
493 | (defmethod confirm-sync-instance ((self mewa)) |
494 | nil) | |
ae09804a | 495 | |
12dcf3d4 | 496 | (defaction ensure-instance-sync ((self mewa)) |
ae09804a | 497 | (when (modifiedp self) |
d5e996b3 DC |
498 | (if nil |
499 | (let ((message (format nil "Record has been modified, Do you wish to save the changes?"))) | |
500 | (case (call 'about-dialog | |
501 | :body (make-presentation (instance self) | |
502 | :type :viewer) | |
503 | :message message | |
504 | :options '((:save . "Save changes to Database") | |
505 | (:cancel . "Cancel all changes"))) | |
506 | (:cancel | |
507 | (cancel-save-instance self)) | |
508 | (:save | |
509 | (save-instance self)))) | |
510 | (save-instance self)))) | |
511 | ||
512 | (defaction sync-and-answer ((self mewa)) | |
513 | (ensure-instance-sync self) | |
514 | (answer (instance self))) | |
ae09804a | 515 | |
e8e743d7 | 516 | (defaction ok ((self mewa) &optional arg) |
517 | "Returns the component if it has not been modified. if it has been, prompt user to save or cancel" | |
68a53dce | 518 | ;(declare (ignore arg)) |
d5e996b3 | 519 | (sync-and-answer self)) |
e8e743d7 | 520 | |
ae09804a | 521 | (defmethod (setf presentation-slot-value) :around (value (slot slot-presentation) instance) |
522 | (let* ((old (prog1 | |
523 | (presentation-slot-value slot instance) | |
524 | (call-next-method))) | |
525 | (new (presentation-slot-value slot instance))) | |
526 | ||
527 | (unless (equal new old ) | |
528 | (let ((self (ucw::parent slot))) | |
529 | (setf (modifiedp self) instance | |
4e2ecf69 | 530 | (modifications self) (append (list new old value slot instance) (modifications self))))))) |
233380f7 | 531 | |
d5e996b3 | 532 | |
ab7ef8e9 DC |
533 | |
534 | ||
535 | ||
536 | ||
233380f7 | 537 | |
538 | ;; This software is Copyright (c) Drew Crampsie, 2004-2005. | |
539 | ;; You are granted the rights to distribute | |
540 | ;; and use this software as governed by the terms | |
541 | ;; of the Lisp Lesser GNU Public License | |
542 | ;; (http://opensource.franz.com/preamble.html), | |
543 | ;; known as the LLGPL. |