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07bf635f RS |
1 | /* A general interface to the widgets of different toolkits. |
2 | Copyright (C) 1992, 1993 Lucid, Inc. | |
3 | ||
4 | This file is part of the Lucid Widget Library. | |
5 | ||
6 | The Lucid Widget Library is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | The Lucid Widget Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | #ifdef NeXT | |
21 | #undef __STRICT_BSD__ /* ick */ | |
22 | #endif | |
23 | ||
24 | #include <stdlib.h> | |
25 | #include <unistd.h> | |
26 | #include <sys/types.h> | |
27 | #include <string.h> | |
28 | #include <stdio.h> | |
29 | #include <X11/StringDefs.h> | |
e7818b5a | 30 | #include "lwlib-int.h" |
07bf635f RS |
31 | #include "lwlib-utils.h" |
32 | ||
33 | #if defined(__GNUC__) && !defined(alloca) | |
34 | #define alloca __builtin_alloca | |
35 | #endif | |
36 | ||
37 | #if ((!__GNUC__) && !defined(__hpux)) && !defined(AIXV3) | |
38 | #include <alloca.h> | |
39 | #endif | |
40 | ||
41 | #if defined(AIXV3) | |
42 | #pragma alloca | |
43 | #endif | |
44 | ||
45 | #if defined (USE_LUCID) | |
46 | #include "lwlib-Xlw.h" | |
47 | #endif | |
48 | #if defined (USE_MOTIF) | |
49 | #include "lwlib-Xm.h" | |
50 | #endif | |
51 | #if defined (USE_OLIT) | |
52 | #include "lwlib-Xol.h" | |
53 | #endif | |
54 | ||
55 | #if !defined (USE_LUCID) && !defined (USE_MOTIF) && !defined (USE_OLIT) | |
56 | ERROR! At least one of USE_LUCID, USE_MOTIF or USE_OLIT must be defined. | |
57 | #endif | |
58 | ||
59 | #if defined (USE_MOTIF) && defined (USE_OLIT) | |
60 | ERROR! no more than one of USE_MOTIF and USE_OLIT may be defined. | |
61 | #endif | |
62 | ||
63 | /* List of all widgets managed by the library. */ | |
64 | static widget_info* | |
65 | all_widget_info = NULL; | |
66 | ||
67 | \f/* Forward declarations */ | |
68 | static void | |
69 | instanciate_widget_instance (widget_instance* instance); | |
70 | ||
71 | \f/* utility functions for widget_instance and widget_info */ | |
72 | static char * | |
73 | safe_strdup (char* s) | |
74 | { | |
75 | char *result; | |
76 | if (! s) return 0; | |
77 | result = (char *) malloc (strlen (s) + 1); | |
78 | if (! result) | |
79 | return 0; | |
80 | strcpy (result, s); | |
81 | return result; | |
82 | } | |
83 | ||
84 | static void | |
85 | safe_free_str (char* s) | |
86 | { | |
87 | if (s) free (s); | |
88 | } | |
89 | ||
90 | static widget_value *widget_value_free_list = 0; | |
91 | ||
92 | widget_value * | |
93 | malloc_widget_value () | |
94 | { | |
95 | widget_value *wv; | |
96 | if (widget_value_free_list) | |
97 | { | |
98 | wv = widget_value_free_list; | |
99 | widget_value_free_list = wv->free_list; | |
100 | wv->free_list = 0; | |
101 | } | |
102 | else | |
103 | { | |
104 | wv = (widget_value *) malloc (sizeof (widget_value)); | |
105 | } | |
106 | memset (wv, 0, sizeof (widget_value)); | |
107 | return wv; | |
108 | } | |
109 | ||
110 | /* this is analagous to free(). It frees only what was allocated | |
111 | by malloc_widget_value(), and no substructures. | |
112 | */ | |
113 | void | |
114 | free_widget_value (wv) | |
115 | widget_value *wv; | |
116 | { | |
117 | if (wv->free_list) | |
118 | abort (); | |
119 | wv->free_list = widget_value_free_list; | |
120 | widget_value_free_list = wv; | |
121 | } | |
122 | ||
123 | static void | |
124 | free_widget_value_tree (widget_value* wv) | |
125 | { | |
126 | if (!wv) | |
127 | return; | |
128 | ||
129 | if (wv->name) free (wv->name); | |
130 | if (wv->value) free (wv->value); | |
131 | if (wv->key) free (wv->key); | |
132 | ||
133 | wv->name = wv->value = wv->key = (char *) 0xDEADBEEF; | |
134 | ||
135 | if (wv->toolkit_data && wv->free_toolkit_data) | |
136 | { | |
137 | free (wv->toolkit_data); | |
138 | wv->toolkit_data = (void *) 0xDEADBEEF; | |
139 | } | |
140 | ||
141 | if (wv->contents && (wv->contents != (widget_value*)1)) | |
142 | { | |
143 | free_widget_value_tree (wv->contents); | |
144 | wv->contents = (widget_value *) 0xDEADBEEF; | |
145 | } | |
146 | if (wv->next) | |
147 | { | |
148 | free_widget_value_tree (wv->next); | |
149 | wv->next = (widget_value *) 0xDEADBEEF; | |
150 | } | |
151 | free_widget_value (wv); | |
152 | } | |
153 | ||
154 | static widget_value * | |
155 | copy_widget_value_tree (widget_value* val, change_type change) | |
156 | { | |
157 | widget_value* copy; | |
158 | ||
159 | if (!val) | |
160 | return NULL; | |
161 | if (val == (widget_value *) 1) | |
162 | return val; | |
163 | ||
164 | copy = malloc_widget_value (); | |
165 | copy->name = safe_strdup (val->name); | |
166 | copy->value = safe_strdup (val->value); | |
167 | copy->key = safe_strdup (val->key); | |
168 | copy->enabled = val->enabled; | |
169 | copy->selected = val->selected; | |
170 | copy->edited = False; | |
171 | copy->change = change; | |
172 | copy->contents = copy_widget_value_tree (val->contents, change); | |
173 | copy->call_data = val->call_data; | |
174 | copy->next = copy_widget_value_tree (val->next, change); | |
175 | copy->toolkit_data = NULL; | |
176 | copy->free_toolkit_data = False; | |
177 | return copy; | |
178 | } | |
179 | ||
180 | static widget_info * | |
181 | allocate_widget_info (char* type, char* name, LWLIB_ID id, widget_value* val, | |
182 | lw_callback pre_activate_cb, lw_callback selection_cb, | |
183 | lw_callback post_activate_cb) | |
184 | { | |
185 | widget_info* info = (widget_info*)malloc (sizeof (widget_info)); | |
186 | info->type = safe_strdup (type); | |
187 | info->name = safe_strdup (name); | |
188 | info->id = id; | |
189 | info->val = copy_widget_value_tree (val, STRUCTURAL_CHANGE); | |
190 | info->busy = False; | |
191 | info->pre_activate_cb = pre_activate_cb; | |
192 | info->selection_cb = selection_cb; | |
193 | info->post_activate_cb = post_activate_cb; | |
194 | info->instances = NULL; | |
195 | ||
196 | info->next = all_widget_info; | |
197 | all_widget_info = info; | |
198 | ||
199 | return info; | |
200 | } | |
201 | ||
202 | static void | |
203 | free_widget_info (widget_info* info) | |
204 | { | |
205 | safe_free_str (info->type); | |
206 | safe_free_str (info->name); | |
207 | free_widget_value_tree (info->val); | |
208 | memset ((void*)info, 0xDEADBEEF, sizeof (widget_info)); | |
209 | free (info); | |
210 | } | |
211 | ||
212 | static void | |
213 | mark_widget_destroyed (Widget widget, XtPointer closure, XtPointer call_data) | |
214 | { | |
215 | widget_instance* instance = (widget_instance*)closure; | |
216 | ||
217 | /* be very conservative */ | |
218 | if (instance->widget == widget) | |
219 | instance->widget = NULL; | |
220 | } | |
221 | ||
222 | static widget_instance * | |
223 | allocate_widget_instance (widget_info* info, Widget parent, Boolean pop_up_p) | |
224 | { | |
225 | widget_instance* instance = | |
226 | (widget_instance*)malloc (sizeof (widget_instance)); | |
227 | instance->parent = parent; | |
228 | instance->pop_up_p = pop_up_p; | |
229 | instance->info = info; | |
230 | instance->next = info->instances; | |
231 | info->instances = instance; | |
232 | ||
233 | instanciate_widget_instance (instance); | |
234 | ||
235 | XtAddCallback (instance->widget, XtNdestroyCallback, | |
236 | mark_widget_destroyed, (XtPointer)instance); | |
237 | return instance; | |
238 | } | |
239 | ||
240 | static void | |
241 | free_widget_instance (widget_instance* instance) | |
242 | { | |
243 | memset ((void*)instance, 0xDEADBEEF, sizeof (widget_instance)); | |
244 | free (instance); | |
245 | } | |
246 | ||
247 | static widget_info * | |
248 | get_widget_info (LWLIB_ID id, Boolean remove_p) | |
249 | { | |
250 | widget_info* info; | |
251 | widget_info* prev; | |
252 | for (prev = NULL, info = all_widget_info; | |
253 | info; | |
254 | prev = info, info = info->next) | |
255 | if (info->id == id) | |
256 | { | |
257 | if (remove_p) | |
258 | { | |
259 | if (prev) | |
260 | prev->next = info->next; | |
261 | else | |
262 | all_widget_info = info->next; | |
263 | } | |
264 | return info; | |
265 | } | |
266 | return NULL; | |
267 | } | |
268 | ||
269 | static widget_instance * | |
270 | get_widget_instance (Widget widget, Boolean remove_p) | |
271 | { | |
272 | widget_info* info; | |
273 | widget_instance* instance; | |
274 | widget_instance* prev; | |
275 | for (info = all_widget_info; info; info = info->next) | |
276 | for (prev = NULL, instance = info->instances; | |
277 | instance; | |
278 | prev = instance, instance = instance->next) | |
279 | if (instance->widget == widget) | |
280 | { | |
281 | if (remove_p) | |
282 | { | |
283 | if (prev) | |
284 | prev->next = instance->next; | |
285 | else | |
286 | info->instances = instance->next; | |
287 | } | |
288 | return instance; | |
289 | } | |
290 | return (widget_instance *) 0; | |
291 | } | |
292 | ||
293 | static widget_instance* | |
294 | find_instance (LWLIB_ID id, Widget parent, Boolean pop_up_p) | |
295 | { | |
296 | widget_info* info = get_widget_info (id, False); | |
297 | widget_instance* instance; | |
298 | ||
299 | if (info) | |
300 | for (instance = info->instances; instance; instance = instance->next) | |
301 | if (instance->parent == parent && instance->pop_up_p == pop_up_p) | |
302 | return instance; | |
303 | ||
304 | return NULL; | |
305 | } | |
306 | ||
307 | \f | |
308 | /* utility function for widget_value */ | |
309 | static Boolean | |
310 | safe_strcmp (char* s1, char* s2) | |
311 | { | |
312 | if (!!s1 ^ !!s2) return True; | |
313 | return (s1 && s2) ? strcmp (s1, s2) : s1 ? False : !!s2; | |
314 | } | |
315 | ||
316 | static int | |
317 | max (int i1, int i2) | |
318 | { | |
319 | return i1 > i2 ? i1 : i2; | |
320 | } | |
321 | ||
322 | ||
323 | #if 0 | |
324 | # define EXPLAIN(name, oc, nc, desc, a1, a2) \ | |
325 | printf ("Change: \"%s\"\tmax(%s=%d,%s=%d)\t%s %d %d\n", \ | |
326 | name, \ | |
327 | (oc == NO_CHANGE ? "none" : \ | |
328 | (oc == INVISIBLE_CHANGE ? "invisible" : \ | |
329 | (oc == VISIBLE_CHANGE ? "visible" : \ | |
330 | (oc == STRUCTURAL_CHANGE ? "structural" : "???")))), \ | |
331 | oc, \ | |
332 | (nc == NO_CHANGE ? "none" : \ | |
333 | (nc == INVISIBLE_CHANGE ? "invisible" : \ | |
334 | (nc == VISIBLE_CHANGE ? "visible" : \ | |
335 | (nc == STRUCTURAL_CHANGE ? "structural" : "???")))), \ | |
336 | nc, desc, a1, a2) | |
337 | #else | |
338 | # define EXPLAIN(name, oc, nc, desc, a1, a2) | |
339 | #endif | |
340 | ||
341 | ||
342 | static widget_value * | |
343 | merge_widget_value (widget_value* val1, widget_value* val2, int level) | |
344 | { | |
345 | change_type change; | |
346 | widget_value* merged_next; | |
347 | widget_value* merged_contents; | |
348 | ||
349 | if (!val1) | |
350 | { | |
351 | if (val2) | |
352 | return copy_widget_value_tree (val2, STRUCTURAL_CHANGE); | |
353 | else | |
354 | return NULL; | |
355 | } | |
356 | if (!val2) | |
357 | { | |
358 | free_widget_value_tree (val1); | |
359 | return NULL; | |
360 | } | |
361 | ||
362 | change = NO_CHANGE; | |
363 | ||
364 | if (safe_strcmp (val1->name, val2->name)) | |
365 | { | |
366 | EXPLAIN (val1->name, change, STRUCTURAL_CHANGE, "name change", | |
367 | val1->name, val2->name); | |
368 | change = max (change, STRUCTURAL_CHANGE); | |
369 | safe_free_str (val1->name); | |
370 | val1->name = safe_strdup (val2->name); | |
371 | } | |
372 | if (safe_strcmp (val1->value, val2->value)) | |
373 | { | |
374 | EXPLAIN (val1->name, change, VISIBLE_CHANGE, "value change", | |
375 | val1->value, val2->value); | |
376 | change = max (change, VISIBLE_CHANGE); | |
377 | safe_free_str (val1->value); | |
378 | val1->value = safe_strdup (val2->value); | |
379 | } | |
380 | if (safe_strcmp (val1->key, val2->key)) | |
381 | { | |
382 | EXPLAIN (val1->name, change, VISIBLE_CHANGE, "key change", | |
383 | val1->key, val2->key); | |
384 | change = max (change, VISIBLE_CHANGE); | |
385 | safe_free_str (val1->key); | |
386 | val1->key = safe_strdup (val2->key); | |
387 | } | |
388 | if (val1->enabled != val2->enabled) | |
389 | { | |
390 | EXPLAIN (val1->name, change, VISIBLE_CHANGE, "enablement change", | |
391 | val1->enabled, val2->enabled); | |
392 | change = max (change, VISIBLE_CHANGE); | |
393 | val1->enabled = val2->enabled; | |
394 | } | |
395 | if (val1->selected != val2->selected) | |
396 | { | |
397 | EXPLAIN (val1->name, change, VISIBLE_CHANGE, "selection change", | |
398 | val1->selected, val2->selected); | |
399 | change = max (change, VISIBLE_CHANGE); | |
400 | val1->selected = val2->selected; | |
401 | } | |
402 | if (val1->call_data != val2->call_data) | |
403 | { | |
404 | EXPLAIN (val1->name, change, INVISIBLE_CHANGE, "call-data change", | |
405 | val1->call_data, val2->call_data); | |
406 | change = max (change, INVISIBLE_CHANGE); | |
407 | val1->call_data = val2->call_data; | |
408 | } | |
409 | ||
410 | if (level > 0) | |
411 | { | |
412 | merged_contents = | |
413 | merge_widget_value (val1->contents, val2->contents, level - 1); | |
414 | ||
415 | if (val1->contents && !merged_contents) | |
416 | { | |
417 | EXPLAIN (val1->name, change, INVISIBLE_CHANGE, "(contents gone)", | |
418 | 0, 0); | |
419 | change = max (change, INVISIBLE_CHANGE); | |
420 | } | |
421 | else if (merged_contents && merged_contents->change != NO_CHANGE) | |
422 | { | |
423 | EXPLAIN (val1->name, change, INVISIBLE_CHANGE, "(contents change)", | |
424 | 0, 0); | |
425 | change = max (change, INVISIBLE_CHANGE); | |
426 | } | |
427 | ||
428 | val1->contents = merged_contents; | |
429 | } | |
430 | ||
431 | merged_next = merge_widget_value (val1->next, val2->next, level); | |
432 | ||
433 | if (val1->next && !merged_next) | |
434 | { | |
435 | EXPLAIN (val1->name, change, STRUCTURAL_CHANGE, "(following gone)", | |
436 | 0, 0); | |
437 | change = max (change, STRUCTURAL_CHANGE); | |
438 | } | |
439 | else if (merged_next) | |
440 | { | |
441 | if (merged_next->change) | |
442 | EXPLAIN (val1->name, change, merged_next->change, "(following change)", | |
443 | 0, 0); | |
444 | change = max (change, merged_next->change); | |
445 | } | |
446 | ||
447 | val1->next = merged_next; | |
448 | ||
449 | val1->change = change; | |
450 | ||
451 | if (change > NO_CHANGE && val1->toolkit_data) | |
452 | { | |
453 | if (val1->free_toolkit_data) | |
454 | free (val1->toolkit_data); | |
455 | val1->toolkit_data = NULL; | |
456 | } | |
457 | ||
458 | return val1; | |
459 | } | |
460 | ||
461 | \f | |
462 | /* modifying the widgets */ | |
463 | static Widget | |
464 | name_to_widget (widget_instance* instance, char* name) | |
465 | { | |
466 | Widget widget = NULL; | |
467 | ||
468 | if (!instance->widget) | |
469 | return NULL; | |
470 | ||
471 | if (!strcmp (XtName (instance->widget), name)) | |
472 | widget = instance->widget; | |
473 | else | |
474 | { | |
475 | int length = strlen (name) + 2; | |
476 | char* real_name = (char *) alloca (length); | |
477 | real_name [0] = '*'; | |
478 | strcpy (real_name + 1, name); | |
479 | ||
480 | widget = XtNameToWidget (instance->widget, real_name); | |
481 | } | |
482 | return widget; | |
483 | } | |
484 | ||
485 | static void | |
486 | set_one_value (widget_instance* instance, widget_value* val, Boolean deep_p) | |
487 | { | |
488 | Widget widget = name_to_widget (instance, val->name); | |
489 | ||
490 | if (widget) | |
491 | { | |
492 | #if defined (USE_LUCID) | |
493 | if (lw_lucid_widget_p (instance->widget)) | |
494 | xlw_update_one_widget (instance, widget, val, deep_p); | |
495 | #endif | |
496 | #if defined (USE_MOTIF) | |
497 | if (lw_motif_widget_p (instance->widget)) | |
498 | xm_update_one_widget (instance, widget, val, deep_p); | |
499 | #endif | |
500 | #if defined (USE_OLIT) | |
501 | if (lw_olit_widget_p (instance->widget)) | |
502 | xol_update_one_widget (instance, widget, val, deep_p); | |
503 | #endif | |
504 | } | |
505 | } | |
506 | ||
507 | static void | |
508 | update_one_widget_instance (widget_instance* instance, Boolean deep_p) | |
509 | { | |
510 | widget_value *val; | |
511 | ||
512 | if (!instance->widget) | |
513 | /* the widget was destroyed */ | |
514 | return; | |
515 | ||
516 | for (val = instance->info->val; val; val = val->next) | |
517 | if (val->change != NO_CHANGE) | |
518 | set_one_value (instance, val, deep_p); | |
519 | } | |
520 | ||
521 | static void | |
522 | update_all_widget_values (widget_info* info, Boolean deep_p) | |
523 | { | |
524 | widget_instance* instance; | |
525 | widget_value* val; | |
526 | ||
527 | for (instance = info->instances; instance; instance = instance->next) | |
528 | update_one_widget_instance (instance, deep_p); | |
529 | ||
530 | for (val = info->val; val; val = val->next) | |
531 | val->change = NO_CHANGE; | |
532 | } | |
533 | ||
534 | void | |
535 | lw_modify_all_widgets (LWLIB_ID id, widget_value* val, Boolean deep_p) | |
536 | { | |
537 | widget_info* info = get_widget_info (id, False); | |
538 | widget_value* new_val; | |
539 | widget_value* next_new_val; | |
540 | widget_value* cur; | |
541 | widget_value* prev; | |
542 | widget_value* next; | |
543 | int found; | |
544 | ||
545 | if (!info) | |
546 | return; | |
547 | ||
548 | for (new_val = val; new_val; new_val = new_val->next) | |
549 | { | |
550 | next_new_val = new_val->next; | |
551 | new_val->next = NULL; | |
552 | found = False; | |
553 | for (prev = NULL, cur = info->val; cur; prev = cur, cur = cur->next) | |
554 | if (!strcmp (cur->name, new_val->name)) | |
555 | { | |
556 | found = True; | |
557 | next = cur->next; | |
558 | cur->next = NULL; | |
559 | cur = merge_widget_value (cur, new_val, deep_p ? 1000 : 1); | |
560 | if (prev) | |
561 | prev->next = cur ? cur : next; | |
562 | else | |
563 | info->val = cur ? cur : next; | |
564 | if (cur) | |
565 | cur->next = next; | |
566 | break; | |
567 | } | |
568 | if (!found) | |
569 | { | |
570 | /* Could not find it, add it */ | |
571 | if (prev) | |
572 | prev->next = copy_widget_value_tree (new_val, STRUCTURAL_CHANGE); | |
573 | else | |
574 | info->val = copy_widget_value_tree (new_val, STRUCTURAL_CHANGE); | |
575 | } | |
576 | new_val->next = next_new_val; | |
577 | } | |
578 | ||
579 | update_all_widget_values (info, deep_p); | |
580 | } | |
581 | ||
582 | \f | |
583 | /* creating the widgets */ | |
584 | ||
585 | static void | |
586 | initialize_widget_instance (widget_instance* instance) | |
587 | { | |
588 | widget_value* val; | |
589 | ||
590 | for (val = instance->info->val; val; val = val->next) | |
591 | val->change = STRUCTURAL_CHANGE; | |
592 | ||
593 | update_one_widget_instance (instance, True); | |
594 | ||
595 | for (val = instance->info->val; val; val = val->next) | |
596 | val->change = NO_CHANGE; | |
597 | } | |
598 | ||
599 | ||
600 | static widget_creation_function | |
601 | find_in_table (char* type, widget_creation_entry* table) | |
602 | { | |
603 | widget_creation_entry* cur; | |
604 | for (cur = table; cur->type; cur++) | |
605 | if (!strcasecmp (type, cur->type)) | |
606 | return cur->function; | |
607 | return NULL; | |
608 | } | |
609 | ||
610 | static Boolean | |
611 | dialog_spec_p (char* name) | |
612 | { | |
613 | /* return True if name matches [EILPQeilpq][1-9][Bb] or | |
614 | [EILPQeilpq][1-9][Bb][Rr][1-9] */ | |
615 | if (!name) | |
616 | return False; | |
617 | ||
618 | switch (name [0]) | |
619 | { | |
620 | case 'E': case 'I': case 'L': case 'P': case 'Q': | |
621 | case 'e': case 'i': case 'l': case 'p': case 'q': | |
622 | if (name [1] >= '0' && name [1] <= '9') | |
623 | { | |
624 | if (name [2] != 'B' && name [2] != 'b') | |
625 | return False; | |
626 | if (!name [3]) | |
627 | return True; | |
628 | if ((name [3] == 'T' || name [3] == 't') && !name [4]) | |
629 | return True; | |
630 | if ((name [3] == 'R' || name [3] == 'r') | |
631 | && name [4] >= '0' && name [4] <= '9' && !name [5]) | |
632 | return True; | |
633 | return False; | |
634 | } | |
635 | else | |
636 | return False; | |
637 | ||
638 | default: | |
639 | return False; | |
640 | } | |
641 | } | |
642 | ||
643 | static void | |
644 | instanciate_widget_instance (widget_instance* instance) | |
645 | { | |
646 | widget_creation_function function = NULL; | |
647 | ||
648 | #if defined (USE_LUCID) | |
649 | if (!function) | |
650 | function = find_in_table (instance->info->type, xlw_creation_table); | |
651 | #endif | |
652 | #if defined(USE_MOTIF) | |
653 | if (!function) | |
654 | function = find_in_table (instance->info->type, xm_creation_table); | |
655 | #endif | |
656 | #if defined (USE_OLIT) | |
657 | if (!function) | |
658 | function = find_in_table (instance->info->type, xol_creation_table); | |
659 | #endif | |
660 | ||
661 | if (!function) | |
662 | { | |
663 | if (dialog_spec_p (instance->info->type)) | |
664 | { | |
665 | #if defined (USE_LUCID) | |
666 | /* not yet */ | |
667 | #endif | |
668 | #if defined(USE_MOTIF) | |
669 | if (!function) | |
670 | function = xm_create_dialog; | |
671 | #endif | |
672 | #if defined (USE_OLIT) | |
673 | /* not yet */ | |
674 | #endif | |
675 | } | |
676 | } | |
677 | ||
678 | if (!function) | |
679 | { | |
680 | printf ("No creation function for widget type %s\n", | |
681 | instance->info->type); | |
682 | abort (); | |
683 | } | |
684 | ||
685 | instance->widget = (*function) (instance); | |
686 | ||
687 | if (!instance->widget) | |
688 | abort (); | |
689 | ||
690 | /* XtRealizeWidget (instance->widget);*/ | |
691 | } | |
692 | ||
693 | void | |
694 | lw_register_widget (char* type, char* name, LWLIB_ID id, widget_value* val, | |
695 | lw_callback pre_activate_cb, lw_callback selection_cb, | |
696 | lw_callback post_activate_cb) | |
697 | { | |
698 | if (!get_widget_info (id, False)) | |
699 | allocate_widget_info (type, name, id, val, pre_activate_cb, selection_cb, | |
700 | post_activate_cb); | |
701 | } | |
702 | ||
703 | Widget | |
704 | lw_get_widget (LWLIB_ID id, Widget parent, Boolean pop_up_p) | |
705 | { | |
706 | widget_instance* instance; | |
707 | ||
708 | instance = find_instance (id, parent, pop_up_p); | |
709 | return instance ? instance->widget : NULL; | |
710 | } | |
711 | ||
712 | Widget | |
713 | lw_make_widget (LWLIB_ID id, Widget parent, Boolean pop_up_p) | |
714 | { | |
715 | widget_instance* instance; | |
716 | widget_info* info; | |
717 | ||
718 | instance = find_instance (id, parent, pop_up_p); | |
719 | if (!instance) | |
720 | { | |
721 | info = get_widget_info (id, False); | |
722 | if (!info) | |
723 | return NULL; | |
724 | instance = allocate_widget_instance (info, parent, pop_up_p); | |
725 | initialize_widget_instance (instance); | |
726 | } | |
727 | if (!instance->widget) | |
728 | abort (); | |
729 | return instance->widget; | |
730 | } | |
731 | ||
732 | Widget | |
733 | lw_create_widget (char* type, char* name, LWLIB_ID id, widget_value* val, | |
734 | Widget parent, Boolean pop_up_p, lw_callback pre_activate_cb, | |
735 | lw_callback selection_cb, lw_callback post_activate_cb) | |
736 | { | |
737 | lw_register_widget (type, name, id, val, pre_activate_cb, selection_cb, | |
738 | post_activate_cb); | |
739 | return lw_make_widget (id, parent, pop_up_p); | |
740 | } | |
741 | ||
742 | \f | |
743 | /* destroying the widgets */ | |
744 | static void | |
745 | destroy_one_instance (widget_instance* instance) | |
746 | { | |
747 | /* Remove the destroy callback on the widget; that callback will try to | |
748 | dereference the instance object (to set its widget slot to 0, since the | |
749 | widget is dead.) Since the instance is now dead, we don't have to worry | |
750 | about the fact that its widget is dead too. | |
751 | ||
752 | This happens in the Phase2Destroy of the widget, so this callback would | |
753 | not have been run until arbitrarily long after the instance was freed. | |
754 | */ | |
755 | if (instance->widget) | |
756 | XtRemoveCallback (instance->widget, XtNdestroyCallback, | |
757 | mark_widget_destroyed, (XtPointer)instance); | |
758 | ||
759 | if (instance->widget) | |
760 | { | |
761 | /* The else are pretty tricky here, including the empty statement | |
762 | at the end because it would be very bad to destroy a widget | |
763 | twice. */ | |
764 | #if defined (USE_LUCID) | |
765 | if (lw_lucid_widget_p (instance->widget)) | |
766 | xlw_destroy_instance (instance); | |
767 | else | |
768 | #endif | |
769 | #if defined (USE_MOTIF) | |
770 | if (lw_motif_widget_p (instance->widget)) | |
771 | xm_destroy_instance (instance); | |
772 | else | |
773 | #endif | |
774 | #if defined (USE_OLIT) | |
775 | if (lw_olit_widget_p (instance->widget)) | |
776 | xol_destroy_instance (instance); | |
777 | else | |
778 | #endif | |
779 | /* do not remove the empty statement */ | |
780 | ; | |
781 | } | |
782 | ||
783 | free_widget_instance (instance); | |
784 | } | |
785 | ||
786 | void | |
787 | lw_destroy_widget (Widget w) | |
788 | { | |
789 | widget_instance* instance = get_widget_instance (w, True); | |
790 | ||
791 | if (instance) | |
792 | { | |
793 | widget_info *info = instance->info; | |
794 | /* instance has already been removed from the list; free it */ | |
795 | destroy_one_instance (instance); | |
796 | /* if there are no instances left, free the info too */ | |
797 | if (!info->instances) | |
798 | lw_destroy_all_widgets (info->id); | |
799 | } | |
800 | } | |
801 | ||
802 | void | |
803 | lw_destroy_all_widgets (LWLIB_ID id) | |
804 | { | |
805 | widget_info* info = get_widget_info (id, True); | |
806 | widget_instance* instance; | |
807 | widget_instance* next; | |
808 | ||
809 | if (info) | |
810 | { | |
811 | for (instance = info->instances; instance; ) | |
812 | { | |
813 | next = instance->next; | |
814 | destroy_one_instance (instance); | |
815 | instance = next; | |
816 | } | |
817 | free_widget_info (info); | |
818 | } | |
819 | } | |
820 | ||
821 | void | |
822 | lw_destroy_everything () | |
823 | { | |
824 | while (all_widget_info) | |
825 | lw_destroy_all_widgets (all_widget_info->id); | |
826 | } | |
827 | ||
828 | void | |
829 | lw_destroy_all_pop_ups () | |
830 | { | |
831 | widget_info* info; | |
832 | widget_info* next; | |
833 | widget_instance* instance; | |
834 | ||
835 | for (info = all_widget_info; info; info = next) | |
836 | { | |
837 | next = info->next; | |
838 | instance = info->instances; | |
839 | if (instance && instance->pop_up_p) | |
840 | lw_destroy_all_widgets (info->id); | |
841 | } | |
842 | } | |
843 | ||
844 | #ifdef USE_MOTIF | |
845 | extern Widget first_child (Widget); /* garbage */ | |
846 | #endif | |
847 | ||
848 | Widget | |
849 | lw_raise_all_pop_up_widgets () | |
850 | { | |
851 | widget_info* info; | |
852 | widget_instance* instance; | |
853 | Widget result = NULL; | |
854 | ||
855 | for (info = all_widget_info; info; info = info->next) | |
856 | for (instance = info->instances; instance; instance = instance->next) | |
857 | if (instance->pop_up_p) | |
858 | { | |
859 | Widget widget = instance->widget; | |
860 | if (widget) | |
861 | { | |
862 | if (XtIsManaged (widget) | |
863 | #ifdef USE_MOTIF | |
864 | /* What a complete load of crap!!!! | |
865 | When a dialogShell is on the screen, it is not managed! | |
866 | */ | |
867 | || (lw_motif_widget_p (instance->widget) && | |
868 | XtIsManaged (first_child (widget))) | |
869 | #endif | |
870 | ) | |
871 | { | |
872 | if (!result) | |
873 | result = widget; | |
874 | XMapRaised (XtDisplay (widget), XtWindow (widget)); | |
875 | } | |
876 | } | |
877 | } | |
878 | return result; | |
879 | } | |
880 | ||
881 | static void | |
882 | lw_pop_all_widgets (LWLIB_ID id, Boolean up) | |
883 | { | |
884 | widget_info* info = get_widget_info (id, False); | |
885 | widget_instance* instance; | |
886 | ||
887 | if (info) | |
888 | for (instance = info->instances; instance; instance = instance->next) | |
889 | if (instance->pop_up_p && instance->widget) | |
890 | { | |
891 | if (!XtIsRealized (instance->widget)) | |
892 | XtRealizeWidget (instance->widget); | |
893 | #if defined (USE_LUCID) | |
894 | if (lw_lucid_widget_p (instance->widget)) | |
895 | xlw_pop_instance (instance, up); | |
896 | #endif | |
897 | #if defined (USE_MOTIF) | |
898 | if (lw_motif_widget_p (instance->widget)) | |
899 | xm_pop_instance (instance, up); | |
900 | #endif | |
901 | #if defined (USE_OLIT) | |
902 | if (lw_olit_widget_p (instance->widget)) | |
903 | xol_pop_instance (instance, up); | |
904 | #endif | |
905 | } | |
906 | } | |
907 | ||
908 | void | |
909 | lw_pop_up_all_widgets (LWLIB_ID id) | |
910 | { | |
911 | lw_pop_all_widgets (id, True); | |
912 | } | |
913 | ||
914 | void | |
915 | lw_pop_down_all_widgets (LWLIB_ID id) | |
916 | { | |
917 | lw_pop_all_widgets (id, False); | |
918 | } | |
919 | ||
920 | void | |
921 | lw_popup_menu (Widget widget) | |
922 | { | |
923 | #if defined (USE_LUCID) | |
924 | if (lw_lucid_widget_p (widget)) | |
925 | xlw_popup_menu (widget); | |
926 | #endif | |
927 | #if defined (USE_MOTIF) | |
928 | if (lw_motif_widget_p (widget)) | |
929 | xm_popup_menu (widget); | |
930 | #endif | |
931 | #if defined (USE_OLIT) | |
932 | if (lw_olit_widget_p (widget)) | |
933 | xol_popup_menu (widget); | |
934 | #endif | |
935 | } | |
936 | ||
937 | \f/* get the values back */ | |
938 | static Boolean | |
939 | get_one_value (widget_instance* instance, widget_value* val) | |
940 | { | |
941 | Widget widget = name_to_widget (instance, val->name); | |
942 | ||
943 | if (widget) | |
944 | { | |
945 | #if defined (USE_LUCID) | |
946 | if (lw_lucid_widget_p (instance->widget)) | |
947 | xlw_update_one_value (instance, widget, val); | |
948 | #endif | |
949 | #if defined (USE_MOTIF) | |
950 | if (lw_motif_widget_p (instance->widget)) | |
951 | xm_update_one_value (instance, widget, val); | |
952 | #endif | |
953 | #if defined (USE_OLIT) | |
954 | if (lw_olit_widget_p (instance->widget)) | |
955 | xol_update_one_value (instance, widget, val); | |
956 | #endif | |
957 | return True; | |
958 | } | |
959 | else | |
960 | return False; | |
961 | } | |
962 | ||
963 | Boolean | |
964 | lw_get_some_values (LWLIB_ID id, widget_value* val_out) | |
965 | { | |
966 | widget_info* info = get_widget_info (id, False); | |
967 | widget_instance* instance; | |
968 | widget_value* val; | |
969 | Boolean result = False; | |
970 | ||
971 | if (!info) | |
972 | return False; | |
973 | ||
974 | instance = info->instances; | |
975 | if (!instance) | |
976 | return False; | |
977 | ||
978 | for (val = val_out; val; val = val->next) | |
979 | if (get_one_value (instance, val)) | |
980 | result = True; | |
981 | ||
982 | return result; | |
983 | } | |
984 | ||
985 | widget_value* | |
986 | lw_get_all_values (LWLIB_ID id) | |
987 | { | |
988 | widget_info* info = get_widget_info (id, False); | |
989 | widget_value* val = info->val; | |
990 | if (lw_get_some_values (id, val)) | |
991 | return val; | |
992 | else | |
993 | return NULL; | |
994 | } | |
995 | ||
996 | /* internal function used by the library dependent implementation to get the | |
997 | widget_value for a given widget in an instance */ | |
998 | widget_value* | |
999 | lw_get_widget_value_for_widget (widget_instance* instance, Widget w) | |
1000 | { | |
1001 | char* name = XtName (w); | |
1002 | widget_value* cur; | |
1003 | for (cur = instance->info->val; cur; cur = cur->next) | |
1004 | if (!strcmp (cur->name, name)) | |
1005 | return cur; | |
1006 | return NULL; | |
1007 | } | |
1008 | ||
1009 | \f/* update other instances value when one thing changed */ | |
1010 | /* This function can be used as a an XtCallback for the widgets that get | |
1011 | modified to update other instances of the widgets. Closure should be the | |
1012 | widget_instance. */ | |
1013 | void | |
1014 | lw_internal_update_other_instances (Widget widget, XtPointer closure, | |
1015 | XtPointer call_data) | |
1016 | { | |
1017 | /* To forbid recursive calls */ | |
1018 | static Boolean updating; | |
1019 | ||
1020 | widget_instance* instance = (widget_instance*)closure; | |
1021 | char* name = XtName (widget); | |
1022 | widget_info* info; | |
1023 | widget_instance* cur; | |
1024 | widget_value* val; | |
1025 | ||
1026 | /* never recurse as this could cause infinite recursions. */ | |
1027 | if (updating) | |
1028 | return; | |
1029 | ||
1030 | /* protect against the widget being destroyed */ | |
1031 | if (XtWidgetBeingDestroyedP (widget)) | |
1032 | return; | |
1033 | ||
1034 | /* Return immediately if there are no other instances */ | |
1035 | info = instance->info; | |
1036 | if (!info->instances->next) | |
1037 | return; | |
1038 | ||
1039 | updating = True; | |
1040 | ||
1041 | for (val = info->val; val && strcmp (val->name, name); val = val->next); | |
1042 | ||
1043 | if (val && get_one_value (instance, val)) | |
1044 | for (cur = info->instances; cur; cur = cur->next) | |
1045 | if (cur != instance) | |
1046 | set_one_value (cur, val, True); | |
1047 | ||
1048 | updating = False; | |
1049 | } | |
1050 | ||
1051 | ||
1052 | \f/* get the id */ | |
1053 | ||
1054 | LWLIB_ID | |
1055 | lw_get_widget_id (Widget w) | |
1056 | { | |
1057 | widget_instance* instance = get_widget_instance (w, False); | |
1058 | ||
1059 | return instance ? instance->info->id : 0; | |
1060 | } | |
1061 | ||
1062 | \f/* set the keyboard focus */ | |
1063 | void | |
1064 | lw_set_keyboard_focus (Widget parent, Widget w) | |
1065 | { | |
1066 | #if defined (USE_MOTIF) | |
1067 | xm_set_keyboard_focus (parent, w); | |
1068 | #else | |
1069 | XtSetKeyboardFocus (parent, w); | |
1070 | #endif | |
1071 | } | |
1072 | ||
1073 | \f/* Show busy */ | |
1074 | static void | |
1075 | show_one_widget_busy (Widget w, Boolean flag) | |
1076 | { | |
1077 | Pixel foreground = 0; | |
1078 | Pixel background = 1; | |
1079 | Widget widget_to_invert = XtNameToWidget (w, "*sheet"); | |
1080 | if (!widget_to_invert) | |
1081 | widget_to_invert = w; | |
1082 | ||
1083 | XtVaGetValues (widget_to_invert, | |
1084 | XtNforeground, &foreground, | |
1085 | XtNbackground, &background, | |
1086 | 0); | |
1087 | XtVaSetValues (widget_to_invert, | |
1088 | XtNforeground, background, | |
1089 | XtNbackground, foreground, | |
1090 | 0); | |
1091 | } | |
1092 | ||
1093 | void | |
1094 | lw_show_busy (Widget w, Boolean busy) | |
1095 | { | |
1096 | widget_instance* instance = get_widget_instance (w, False); | |
1097 | widget_info* info; | |
1098 | widget_instance* next; | |
1099 | ||
1100 | if (instance) | |
1101 | { | |
1102 | info = instance->info; | |
1103 | if (info->busy != busy) | |
1104 | { | |
1105 | for (next = info->instances; next; next = next->next) | |
1106 | if (next->widget) | |
1107 | show_one_widget_busy (next->widget, busy); | |
1108 | info->busy = busy; | |
1109 | } | |
1110 | } | |
1111 | } |