lwlib/lwlib.c

   1 /* A general interface to the widgets of different toolkits.
   2 Copyright (C) 1992, 1993 Lucid, Inc.
   3 Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2003, 2004,
   4   2005, 2006, 2007, 2008, 2009, 2010  Free Software Foundation, Inc.
   5
   6 This file is part of the Lucid Widget Library.
   7
   8 The Lucid Widget Library is free software; you can redistribute it and/or
   9 modify it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2, or (at your option)
  11 any later version.
  12
  13 The Lucid Widget Library is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GNU Emacs; see the file COPYING.  If not, write to
  20 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  21 Boston, MA 02110-1301, USA.  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <setjmp.h>
  28 #include "../src/lisp.h"
  29
  30 #include <sys/types.h>
  31 #include <stdio.h>
  32 #include <ctype.h>
  33 #include "lwlib-int.h"
  34 #include "lwlib-utils.h"
  35 #include <X11/StringDefs.h>
  36
  37 #if defined (USE_LUCID)
  38 #include "lwlib-Xlw.h"
  39 #endif
  40 #if defined (USE_MOTIF)
  41 #include "lwlib-Xm.h"
  42 #else /* not USE_MOTIF */
  43 #if defined (USE_LUCID)
  44 #define USE_XAW
  45 #endif /* not USE_MOTIF && USE_LUCID */
  46 #endif
  47 #if defined (USE_XAW)
  48 #ifdef HAVE_XAW3D
  49 #include <X11/Xaw3d/Paned.h>
  50 #else /* !HAVE_XAW3D */
  51 #include <X11/Xaw/Paned.h>
  52 #endif /* HAVE_XAW3D */
  53 #include "lwlib-Xaw.h"
  54 #endif
  55
  56 #if !defined (USE_LUCID) && !defined (USE_MOTIF)
  57  #error  At least one of USE_LUCID or USE_MOTIF must be defined.
  58 #endif
  59
  60 #ifndef max
  61 #define max(x, y) ((x) > (y) ? (x) : (y))
  62 #endif
  63
  64 /* List of all widgets managed by the library. */
  65 static widget_info*
  66 all_widget_info = NULL;
  67
  68 #ifdef USE_MOTIF
  69 char *lwlib_toolkit_type = "motif";
  70 #else
  71 char *lwlib_toolkit_type = "lucid";
  72 #endif
  73
  74 static widget_value *merge_widget_value P_ ((widget_value *,
  75                                              widget_value *,
  76                                              int, int *));
  77 static void instantiate_widget_instance P_ ((widget_instance *));
  78 static int my_strcasecmp P_ ((char *, char *));
  79 static void safe_free_str P_ ((char *));
  80 static void free_widget_value_tree P_ ((widget_value *));
  81 static widget_value *copy_widget_value_tree P_ ((widget_value *,
  82                                                  change_type));
  83 static widget_info *allocate_widget_info P_ ((char *, char *, LWLIB_ID,
  84                                               widget_value *,
  85                                               lw_callback, lw_callback,
  86                                               lw_callback, lw_callback));
  87 static void free_widget_info P_ ((widget_info *));
  88 static void mark_widget_destroyed P_ ((Widget, XtPointer, XtPointer));
  89 static widget_instance *allocate_widget_instance P_ ((widget_info *,
  90                                                       Widget, Boolean));
  91 static void free_widget_instance P_ ((widget_instance *));
  92 static widget_info *get_widget_info P_ ((LWLIB_ID, Boolean));
  93 static widget_instance *get_widget_instance P_ ((Widget, Boolean));
  94 static widget_instance *find_instance P_ ((LWLIB_ID, Widget, Boolean));
  95 static Boolean safe_strcmp P_ ((char *, char *));
  96 static Widget name_to_widget P_ ((widget_instance *, char *));
  97 static void set_one_value P_ ((widget_instance *, widget_value *, Boolean));
  98 static void update_one_widget_instance P_ ((widget_instance *, Boolean));
  99 static void update_all_widget_values P_ ((widget_info *, Boolean));
 100 static void initialize_widget_instance P_ ((widget_instance *));
 101 static widget_creation_function find_in_table P_ ((char *, widget_creation_entry *));
 102 static Boolean dialog_spec_p P_ ((char *));
 103 static void destroy_one_instance P_ ((widget_instance *));
 104 static void lw_pop_all_widgets P_ ((LWLIB_ID, Boolean));
 105 static Boolean get_one_value P_ ((widget_instance *, widget_value *));
 106 static void show_one_widget_busy P_ ((Widget, Boolean));
 107
 108 void
 109 lwlib_memset (address, value, length)
 110      char *address;
 111      int value;
 112      size_t length;
 113 {
 114   int i;
 115
 116   for (i = 0; i < length; i++)
 117     address[i] = value;
 118 }
 119
 120 void
 121 lwlib_bcopy (from, to, length)
 122      char *from;
 123      char *to;
 124      int length;
 125 {
 126   int i;
 127
 128   for (i = 0; i < length; i++)
 129     to[i] = from[i];
 130 }
 131 \f/* utility functions for widget_instance and widget_info */
 132 char *
 133 safe_strdup (s)
 134      const char *s;
 135 {
 136   char *result;
 137   if (! s) return 0;
 138   result = (char *) malloc (strlen (s) + 1);
 139   if (! result)
 140     return 0;
 141   strcpy (result, s);
 142   return result;
 143 }
 144
 145 /* Like strcmp but ignore differences in case.  */
 146
 147 static int
 148 my_strcasecmp (s1, s2)
 149      char *s1, *s2;
 150 {
 151   while (1)
 152     {
 153       int c1 = *s1++;
 154       int c2 = *s2++;
 155       if (isupper (c1))
 156         c1 = tolower (c1);
 157       if (isupper (c2))
 158         c2 = tolower (c2);
 159       if (c1 != c2)
 160         return (c1 > c2 ? 1 : -1);
 161       if (c1 == 0)
 162         return 0;
 163     }
 164 }
 165
 166 static void
 167 safe_free_str (s)
 168      char *s;
 169 {
 170   free (s);
 171 }
 172
 173 static widget_value *widget_value_free_list = 0;
 174 static int malloc_cpt = 0;
 175
 176 widget_value *
 177 malloc_widget_value ()
 178 {
 179   widget_value *wv;
 180   if (widget_value_free_list)
 181     {
 182       wv = widget_value_free_list;
 183       widget_value_free_list = wv->free_list;
 184       wv->free_list = 0;
 185     }
 186   else
 187     {
 188       wv = (widget_value *) malloc (sizeof (widget_value));
 189       malloc_cpt++;
 190     }
 191   lwlib_memset ((void*) wv, 0, sizeof (widget_value));
 192   return wv;
 193 }
 194
 195 /* this is analogous to free().  It frees only what was allocated
 196    by malloc_widget_value(), and no substructures.
 197  */
 198 void
 199 free_widget_value (wv)
 200      widget_value *wv;
 201 {
 202   if (wv->free_list)
 203     abort ();
 204
 205   if (malloc_cpt > 25)
 206     {
 207       /* When the number of already allocated cells is too big,
 208          We free it.  */
 209       free (wv);
 210       malloc_cpt--;
 211     }
 212   else
 213     {
 214       wv->free_list = widget_value_free_list;
 215       widget_value_free_list = wv;
 216     }
 217 }
 218
 219 static void
 220 free_widget_value_tree (wv)
 221      widget_value *wv;
 222 {
 223   if (!wv)
 224     return;
 225
 226   free (wv->name);
 227   free (wv->value);
 228   free (wv->key);
 229
 230   wv->name = wv->value = wv->key = (char *) 0xDEADBEEF;
 231
 232   if (wv->toolkit_data && wv->free_toolkit_data)
 233     {
 234       XtFree (wv->toolkit_data);
 235       wv->toolkit_data = (void *) 0xDEADBEEF;
 236     }
 237
 238   if (wv->contents && (wv->contents != (widget_value*)1))
 239     {
 240       free_widget_value_tree (wv->contents);
 241       wv->contents = (widget_value *) 0xDEADBEEF;
 242     }
 243   if (wv->next)
 244     {
 245       free_widget_value_tree (wv->next);
 246       wv->next = (widget_value *) 0xDEADBEEF;
 247     }
 248   free_widget_value (wv);
 249 }
 250
 251 static widget_value *
 252 copy_widget_value_tree (val, change)
 253      widget_value* val;
 254      change_type change;
 255 {
 256   widget_value* copy;
 257
 258   if (!val)
 259     return NULL;
 260   if (val == (widget_value *) 1)
 261     return val;
 262
 263   copy = malloc_widget_value ();
 264   copy->name = safe_strdup (val->name);
 265   copy->value = safe_strdup (val->value);
 266   copy->key = safe_strdup (val->key);
 267   copy->help = val->help;
 268   copy->enabled = val->enabled;
 269   copy->button_type = val->button_type;
 270   copy->selected = val->selected;
 271   copy->edited = False;
 272   copy->change = change;
 273   copy->this_one_change = change;
 274   copy->contents = copy_widget_value_tree (val->contents, change);
 275   copy->call_data = val->call_data;
 276   copy->next = copy_widget_value_tree (val->next, change);
 277   copy->toolkit_data = NULL;
 278   copy->free_toolkit_data = False;
 279   return copy;
 280 }
 281
 282 static widget_info *
 283 allocate_widget_info (type, name, id, val, pre_activate_cb,
 284                       selection_cb, post_activate_cb, highlight_cb)
 285      char* type;
 286      char* name;
 287      LWLIB_ID id;
 288      widget_value* val;
 289      lw_callback pre_activate_cb;
 290      lw_callback selection_cb;
 291      lw_callback post_activate_cb;
 292      lw_callback highlight_cb;
 293 {
 294   widget_info* info = (widget_info*)malloc (sizeof (widget_info));
 295   info->type = safe_strdup (type);
 296   info->name = safe_strdup (name);
 297   info->id = id;
 298   info->val = copy_widget_value_tree (val, STRUCTURAL_CHANGE);
 299   info->busy = False;
 300   info->pre_activate_cb = pre_activate_cb;
 301   info->selection_cb = selection_cb;
 302   info->post_activate_cb = post_activate_cb;
 303   info->highlight_cb = highlight_cb;
 304   info->instances = NULL;
 305
 306   info->next = all_widget_info;
 307   all_widget_info = info;
 308
 309   return info;
 310 }
 311
 312 static void
 313 free_widget_info (info)
 314      widget_info* info;
 315 {
 316   safe_free_str (info->type);
 317   safe_free_str (info->name);
 318   free_widget_value_tree (info->val);
 319   lwlib_memset ((void*)info, 0xDEADBEEF, sizeof (widget_info));
 320   free (info);
 321 }
 322
 323 static void
 324 mark_widget_destroyed (widget, closure, call_data)
 325      Widget widget;
 326      XtPointer closure;
 327      XtPointer call_data;
 328 {
 329   widget_instance* instance = (widget_instance*)closure;
 330
 331   /* be very conservative */
 332   if (instance->widget == widget)
 333     instance->widget = NULL;
 334 }
 335
 336 /* The messy #ifdef PROTOTYPES here and elsewhere are prompted by a
 337    flood of warnings about argument promotion from proprietary ISO C
 338    compilers.  (etags still only makes one entry for each function.)  */
 339 static widget_instance *
 340 #ifdef PROTOTYPES
 341 allocate_widget_instance (widget_info* info, Widget parent, Boolean pop_up_p)
 342 #else
 343 allocate_widget_instance (info, parent, pop_up_p)
 344      widget_info* info;
 345      Widget parent;
 346      Boolean pop_up_p;
 347 #endif
 348 {
 349   widget_instance* instance =
 350     (widget_instance*)malloc (sizeof (widget_instance));
 351   bzero (instance, sizeof *instance);
 352   instance->parent = parent;
 353   instance->pop_up_p = pop_up_p;
 354   instance->info = info;
 355   instance->next = info->instances;
 356   info->instances = instance;
 357
 358   instantiate_widget_instance (instance);
 359
 360   XtAddCallback (instance->widget, XtNdestroyCallback,
 361                  mark_widget_destroyed, (XtPointer)instance);
 362   return instance;
 363 }
 364
 365 static void
 366 free_widget_instance (instance)
 367      widget_instance* instance;
 368 {
 369   lwlib_memset ((void*)instance, 0xDEADBEEF, sizeof (widget_instance));
 370   free (instance);
 371 }
 372
 373 static widget_info *
 374 #ifdef PROTOTYPES
 375 get_widget_info (LWLIB_ID id, Boolean remove_p)
 376 #else
 377 get_widget_info (id, remove_p)
 378      LWLIB_ID id;
 379      Boolean remove_p;
 380 #endif
 381 {
 382   widget_info* info;
 383   widget_info* prev;
 384   for (prev = NULL, info = all_widget_info;
 385        info;
 386        prev = info, info = info->next)
 387     if (info->id == id)
 388      {
 389        if (remove_p)
 390          {
 391            if (prev)
 392              prev->next = info->next;
 393            else
 394              all_widget_info = info->next;
 395          }
 396       return info;
 397      }
 398   return NULL;
 399 }
 400
 401 /* Internal function used by the library dependent implementation to get the
 402    widget_value for a given widget in an instance */
 403 widget_info *
 404 lw_get_widget_info (id)
 405      LWLIB_ID id;
 406 {
 407   return get_widget_info (id, 0);
 408 }
 409
 410 static widget_instance *
 411 #ifdef PROTOTYPES
 412 get_widget_instance (Widget widget, Boolean remove_p)
 413 #else
 414 get_widget_instance (widget, remove_p)
 415      Widget widget;
 416      Boolean remove_p;
 417 #endif
 418 {
 419   widget_info* info;
 420   widget_instance* instance;
 421   widget_instance* prev;
 422   for (info = all_widget_info; info; info = info->next)
 423     for (prev = NULL, instance = info->instances;
 424          instance;
 425          prev = instance, instance = instance->next)
 426       if (instance->widget == widget)
 427         {
 428           if (remove_p)
 429             {
 430               if (prev)
 431                 prev->next = instance->next;
 432               else
 433                 info->instances = instance->next;
 434             }
 435           return instance;
 436         }
 437   return (widget_instance *) 0;
 438 }
 439
 440 /* Value is a pointer to the widget_instance corresponding to
 441    WIDGET, or null if WIDGET is not a lwlib widget.  */
 442
 443 widget_instance *
 444 lw_get_widget_instance (widget)
 445      Widget widget;
 446 {
 447   return get_widget_instance (widget, False);
 448 }
 449
 450 static widget_instance*
 451 #ifdef PROTOTYPES
 452 find_instance (LWLIB_ID id, Widget parent, Boolean pop_up_p)
 453 #else
 454 find_instance (id, parent, pop_up_p)
 455      LWLIB_ID id;
 456      Widget parent;
 457      Boolean pop_up_p;
 458 #endif
 459 {
 460   widget_info* info = get_widget_info (id, False);
 461   widget_instance* instance;
 462
 463   if (info)
 464     for (instance = info->instances; instance; instance = instance->next)
 465       if (instance->parent == parent && instance->pop_up_p == pop_up_p)
 466         return instance;
 467
 468   return NULL;
 469 }
 470
 471 \f
 472 /* utility function for widget_value */
 473 static Boolean
 474 safe_strcmp (s1, s2)
 475      char* s1;
 476      char* s2;
 477 {
 478   if (!!s1 ^ !!s2) return True;
 479   return (s1 && s2) ? strcmp (s1, s2) : s1 ? False : !!s2;
 480 }
 481
 482
 483 #if 0
 484 # define EXPLAIN(name, oc, nc, desc, a1, a2)                            \
 485    printf ("Change: \"%s\"\tmax(%s=%d,%s=%d)\t%s %d %d\n",              \
 486            name,                                                        \
 487            (oc == NO_CHANGE ? "none" :                                  \
 488             (oc == INVISIBLE_CHANGE ? "invisible" :                     \
 489              (oc == VISIBLE_CHANGE ? "visible" :                        \
 490               (oc == STRUCTURAL_CHANGE ? "structural" : "???")))),      \
 491            oc,                                                          \
 492            (nc == NO_CHANGE ? "none" :                                  \
 493             (nc == INVISIBLE_CHANGE ? "invisible" :                     \
 494              (nc == VISIBLE_CHANGE ? "visible" :                        \
 495               (nc == STRUCTURAL_CHANGE ? "structural" : "???")))),      \
 496            nc, desc, a1, a2)
 497 #else
 498 # define EXPLAIN(name, oc, nc, desc, a1, a2)
 499 #endif
 500
 501
 502 static widget_value *
 503 merge_widget_value (val1, val2, level, change_p)
 504      widget_value* val1;
 505      widget_value* val2;
 506      int level;
 507      int *change_p;
 508 {
 509   change_type change, this_one_change;
 510   widget_value* merged_next;
 511   widget_value* merged_contents;
 512
 513   if (!val1)
 514     {
 515       if (val2)
 516         {
 517           *change_p = 1;
 518           return copy_widget_value_tree (val2, STRUCTURAL_CHANGE);
 519         }
 520       else
 521         return NULL;
 522     }
 523   if (!val2)
 524     {
 525       *change_p = 1;
 526       free_widget_value_tree (val1);
 527       return NULL;
 528     }
 529
 530   change = NO_CHANGE;
 531
 532   if (safe_strcmp (val1->name, val2->name))
 533     {
 534       EXPLAIN (val1->name, change, STRUCTURAL_CHANGE, "name change",
 535                val1->name, val2->name);
 536       change = max (change, STRUCTURAL_CHANGE);
 537       safe_free_str (val1->name);
 538       val1->name = safe_strdup (val2->name);
 539     }
 540   if (safe_strcmp (val1->value, val2->value))
 541     {
 542       EXPLAIN (val1->name, change, VISIBLE_CHANGE, "value change",
 543                val1->value, val2->value);
 544       change = max (change, VISIBLE_CHANGE);
 545       safe_free_str (val1->value);
 546       val1->value = safe_strdup (val2->value);
 547     }
 548   if (safe_strcmp (val1->key, val2->key))
 549     {
 550       EXPLAIN (val1->name, change, VISIBLE_CHANGE, "key change",
 551                val1->key, val2->key);
 552       change = max (change, VISIBLE_CHANGE);
 553       safe_free_str (val1->key);
 554       val1->key = safe_strdup (val2->key);
 555     }
 556   if (! EQ (val1->help, val2->help))
 557     {
 558       EXPLAIN (val1->name, change, VISIBLE_CHANGE, "help change",
 559                val1->help, val2->help);
 560       change = max (change, VISIBLE_CHANGE);
 561       val1->help = val2->help;
 562     }
 563   if (val1->enabled != val2->enabled)
 564     {
 565       EXPLAIN (val1->name, change, VISIBLE_CHANGE, "enablement change",
 566                val1->enabled, val2->enabled);
 567       change = max (change, VISIBLE_CHANGE);
 568       val1->enabled = val2->enabled;
 569     }
 570   if (val1->button_type != val2->button_type)
 571     {
 572       EXPLAIN (val1->name, change, VISIBLE_CHANGE, "button type change",
 573                val1->button_type, val2->button_type);
 574       change = max (change, VISIBLE_CHANGE);
 575       val1->button_type = val2->button_type;
 576     }
 577   if (val1->selected != val2->selected)
 578     {
 579       EXPLAIN (val1->name, change, VISIBLE_CHANGE, "selection change",
 580                val1->selected, val2->selected);
 581       change = max (change, VISIBLE_CHANGE);
 582       val1->selected = val2->selected;
 583     }
 584   if (val1->call_data != val2->call_data)
 585     {
 586       EXPLAIN (val1->name, change, INVISIBLE_CHANGE, "call-data change",
 587                val1->call_data, val2->call_data);
 588       change = max (change, INVISIBLE_CHANGE);
 589       val1->call_data = val2->call_data;
 590     }
 591
 592   if (level > 0)
 593     {
 594       merged_contents =
 595         merge_widget_value (val1->contents, val2->contents, level - 1,
 596                             change_p);
 597
 598       if (val1->contents && !merged_contents)
 599         {
 600           /* This used to say INVISIBLE_CHANGE,
 601              but it is visible and vitally important when
 602              the contents of the menu bar itself are entirely deleted.
 603
 604              But maybe it doesn't matter.  This fails to fix the bug.  */
 605           EXPLAIN (val1->name, change, STRUCTURAL_CHANGE, "(contents gone)",
 606                    0, 0);
 607           change = max (change, STRUCTURAL_CHANGE);
 608         }
 609       else if (merged_contents && merged_contents->change != NO_CHANGE)
 610         {
 611           EXPLAIN (val1->name, change, INVISIBLE_CHANGE, "(contents change)",
 612                    0, 0);
 613           change = max (change, INVISIBLE_CHANGE);
 614 #if 0 /* This was replaced by the August 9 1996 change in lwlib-Xm.c.  */
 615 #ifdef USE_MOTIF
 616           change = max (merged_contents->change, change);
 617 #endif
 618 #endif
 619         }
 620
 621       val1->contents = merged_contents;
 622     }
 623
 624   this_one_change = change;
 625
 626   merged_next = merge_widget_value (val1->next, val2->next, level, change_p);
 627
 628   if (val1->next && !merged_next)
 629     {
 630       EXPLAIN (val1->name, change, STRUCTURAL_CHANGE, "(following gone)",
 631                0, 0);
 632       change = max (change, STRUCTURAL_CHANGE);
 633     }
 634   else if (merged_next)
 635     {
 636       if (merged_next->change)
 637         EXPLAIN (val1->name, change, merged_next->change, "(following change)",
 638                  0, 0);
 639       change = max (change, merged_next->change);
 640     }
 641
 642   val1->next = merged_next;
 643
 644   val1->this_one_change = this_one_change;
 645   val1->change = change;
 646
 647   if (change > NO_CHANGE && val1->toolkit_data)
 648     {
 649       *change_p = 1;
 650       if (val1->free_toolkit_data)
 651         XtFree (val1->toolkit_data);
 652       val1->toolkit_data = NULL;
 653     }
 654
 655   return val1;
 656 }
 657
 658 \f
 659 /* modifying the widgets */
 660 static Widget
 661 name_to_widget (instance, name)
 662      widget_instance* instance;
 663      char* name;
 664 {
 665   Widget widget = NULL;
 666
 667   if (!instance->widget)
 668     return NULL;
 669
 670   if (!strcmp (XtName (instance->widget), name))
 671     widget = instance->widget;
 672   else
 673     {
 674       int length = strlen (name) + 2;
 675       char* real_name = (char *) xmalloc (length);
 676       real_name [0] = '*';
 677       strcpy (real_name + 1, name);
 678
 679       widget = XtNameToWidget (instance->widget, real_name);
 680
 681       free (real_name);
 682     }
 683   return widget;
 684 }
 685
 686 static void
 687 #ifdef PROTOTYPES
 688 set_one_value (widget_instance* instance, widget_value* val, Boolean deep_p)
 689 #else
 690 set_one_value (instance, val, deep_p)
 691      widget_instance* instance;
 692      widget_value* val;
 693      Boolean deep_p;
 694 #endif
 695 {
 696   Widget widget = name_to_widget (instance, val->name);
 697
 698   if (widget)
 699     {
 700 #if defined (USE_LUCID)
 701       if (lw_lucid_widget_p (instance->widget))
 702         xlw_update_one_widget (instance, widget, val, deep_p);
 703 #endif
 704 #if defined (USE_MOTIF)
 705       if (lw_motif_widget_p (instance->widget))
 706         xm_update_one_widget (instance, widget, val, deep_p);
 707 #endif
 708 #if defined (USE_XAW)
 709       if (lw_xaw_widget_p (instance->widget))
 710         xaw_update_one_widget (instance, widget, val, deep_p);
 711 #endif
 712     }
 713 }
 714
 715 static void
 716 #ifdef PROTOTYPES
 717 update_one_widget_instance (widget_instance* instance, Boolean deep_p)
 718 #else
 719 update_one_widget_instance (instance, deep_p)
 720      widget_instance* instance;
 721      Boolean deep_p;
 722 #endif
 723 {
 724   widget_value *val;
 725
 726   if (!instance->widget)
 727     /* the widget was destroyed */
 728     return;
 729
 730   for (val = instance->info->val; val; val = val->next)
 731     if (val->change != NO_CHANGE)
 732       set_one_value (instance, val, deep_p);
 733 }
 734
 735 static void
 736 #ifdef PROTOTYPES
 737 update_all_widget_values (widget_info* info, Boolean deep_p)
 738 #else
 739 update_all_widget_values (info, deep_p)
 740      widget_info* info;
 741      Boolean deep_p;
 742 #endif
 743 {
 744   widget_instance* instance;
 745   widget_value* val;
 746
 747   for (instance = info->instances; instance; instance = instance->next)
 748     update_one_widget_instance (instance, deep_p);
 749
 750   for (val = info->val; val; val = val->next)
 751     val->change = NO_CHANGE;
 752 }
 753
 754 int
 755 #ifdef PROTOTYPES
 756 lw_modify_all_widgets (LWLIB_ID id, widget_value* val, Boolean deep_p)
 757 #else
 758 lw_modify_all_widgets (id, val, deep_p)
 759      LWLIB_ID id;
 760      widget_value* val;
 761      Boolean deep_p;
 762 #endif
 763 {
 764   widget_info* info = get_widget_info (id, False);
 765   widget_value* new_val;
 766   widget_value* next_new_val;
 767   widget_value* cur;
 768   widget_value* prev;
 769   widget_value* next;
 770   int           found;
 771   int change_p = 0;
 772
 773   if (!info)
 774     return 0;
 775
 776   for (new_val = val; new_val; new_val = new_val->next)
 777     {
 778       next_new_val = new_val->next;
 779       new_val->next = NULL;
 780       found = False;
 781       for (prev = NULL, cur = info->val; cur; prev = cur, cur = cur->next)
 782         if (!strcmp (cur->name, new_val->name))
 783           {
 784             found = True;
 785             next = cur->next;
 786             cur->next = NULL;
 787             cur = merge_widget_value (cur, new_val, deep_p ? 1000 : 1,
 788                                       &change_p);
 789             if (prev)
 790               prev->next = cur ? cur : next;
 791             else
 792               info->val = cur ? cur : next;
 793             if (cur)
 794               cur->next = next;
 795             break;
 796           }
 797       if (!found)
 798         {
 799           /* Could not find it, add it */
 800           if (prev)
 801             prev->next = copy_widget_value_tree (new_val, STRUCTURAL_CHANGE);
 802           else
 803             info->val = copy_widget_value_tree (new_val, STRUCTURAL_CHANGE);
 804           change_p = 1;
 805         }
 806       new_val->next = next_new_val;
 807     }
 808
 809   update_all_widget_values (info, deep_p);
 810   return change_p;
 811 }
 812
 813 \f
 814 /* creating the widgets */
 815
 816 static void
 817 initialize_widget_instance (instance)
 818      widget_instance* instance;
 819 {
 820   widget_value* val;
 821
 822   for (val = instance->info->val; val; val = val->next)
 823     val->change = STRUCTURAL_CHANGE;
 824
 825   update_one_widget_instance (instance, True);
 826
 827   for (val = instance->info->val; val; val = val->next)
 828     val->change = NO_CHANGE;
 829 }
 830
 831
 832 static widget_creation_function
 833 find_in_table (type, table)
 834      char* type;
 835      widget_creation_entry* table;
 836 {
 837   widget_creation_entry* cur;
 838   for (cur = table; cur->type; cur++)
 839     if (!my_strcasecmp (type, cur->type))
 840       return cur->function;
 841   return NULL;
 842 }
 843
 844 static Boolean
 845 dialog_spec_p (name)
 846      char* name;
 847 {
 848   /* return True if name matches [EILPQeilpq][1-9][Bb] or
 849      [EILPQeilpq][1-9][Bb][Rr][1-9] */
 850   if (!name)
 851     return False;
 852
 853   switch (name [0])
 854     {
 855     case 'E': case 'I': case 'L': case 'P': case 'Q':
 856     case 'e': case 'i': case 'l': case 'p': case 'q':
 857       if (name [1] >= '0' && name [1] <= '9')
 858         {
 859           if (name [2] != 'B' && name [2] != 'b')
 860             return False;
 861           if (!name [3])
 862             return True;
 863           if ((name [3] == 'T' || name [3] == 't') && !name [4])
 864             return True;
 865           if ((name [3] == 'R' || name [3] == 'r')
 866               && name [4] >= '0' && name [4] <= '9' && !name [5])
 867             return True;
 868           return False;
 869         }
 870       else
 871         return False;
 872
 873     default:
 874       return False;
 875     }
 876 }
 877
 878 static void
 879 instantiate_widget_instance (instance)
 880      widget_instance* instance;
 881 {
 882   widget_creation_function function = NULL;
 883
 884 #if defined (USE_LUCID)
 885   if (!function)
 886     function = find_in_table (instance->info->type, xlw_creation_table);
 887 #endif
 888 #if defined(USE_MOTIF)
 889   if (!function)
 890     function = find_in_table (instance->info->type, xm_creation_table);
 891 #endif
 892 #if defined (USE_XAW)
 893   if (!function)
 894     function = find_in_table (instance->info->type, xaw_creation_table);
 895 #endif
 896
 897   if (!function)
 898     {
 899       if (dialog_spec_p (instance->info->type))
 900         {
 901 #if defined (USE_LUCID)
 902           /* not yet */
 903 #endif
 904 #if defined(USE_MOTIF)
 905           if (!function)
 906             function = xm_create_dialog;
 907 #endif
 908 #if defined (USE_XAW)
 909           if (!function)
 910             function = xaw_create_dialog;
 911 #endif
 912         }
 913     }
 914
 915   if (!function)
 916     {
 917       printf ("No creation function for widget type %s\n",
 918               instance->info->type);
 919       abort ();
 920     }
 921
 922   instance->widget = (*function) (instance);
 923
 924   if (!instance->widget)
 925     abort ();
 926
 927   /*   XtRealizeWidget (instance->widget);*/
 928 }
 929
 930 void
 931 lw_register_widget (type, name, id, val, pre_activate_cb,
 932                     selection_cb, post_activate_cb, highlight_cb)
 933      char* type;
 934      char* name;
 935      LWLIB_ID id;
 936      widget_value* val;
 937      lw_callback pre_activate_cb;
 938      lw_callback selection_cb;
 939      lw_callback post_activate_cb;
 940      lw_callback highlight_cb;
 941 {
 942   if (!get_widget_info (id, False))
 943     allocate_widget_info (type, name, id, val, pre_activate_cb, selection_cb,
 944                           post_activate_cb, highlight_cb);
 945 }
 946
 947 Widget
 948 #ifdef PROTOTYPES
 949 lw_get_widget (LWLIB_ID id, Widget parent, Boolean pop_up_p)
 950 #else
 951 lw_get_widget (id, parent, pop_up_p)
 952      LWLIB_ID id;
 953      Widget parent;
 954      Boolean pop_up_p;
 955 #endif
 956 {
 957   widget_instance* instance;
 958
 959   instance = find_instance (id, parent, pop_up_p);
 960   return instance ? instance->widget : NULL;
 961 }
 962
 963 Widget
 964 #ifdef PROTOTYPES
 965 lw_make_widget (LWLIB_ID id, Widget parent, Boolean pop_up_p)
 966 #else
 967 lw_make_widget (id, parent, pop_up_p)
 968      LWLIB_ID id;
 969      Widget parent;
 970      Boolean pop_up_p;
 971 #endif
 972 {
 973   widget_instance* instance;
 974   widget_info* info;
 975
 976   instance = find_instance (id, parent, pop_up_p);
 977   if (!instance)
 978     {
 979       info = get_widget_info (id, False);
 980       if (!info)
 981         return NULL;
 982       instance = allocate_widget_instance (info, parent, pop_up_p);
 983       initialize_widget_instance (instance);
 984     }
 985   if (!instance->widget)
 986     abort ();
 987   return instance->widget;
 988 }
 989
 990 Widget
 991 #ifdef PROTOTYPES
 992 lw_create_widget (char* type, char* name, LWLIB_ID id, widget_value* val,
 993                   Widget parent, Boolean pop_up_p,
 994                   lw_callback pre_activate_cb, lw_callback selection_cb,
 995                   lw_callback post_activate_cb, lw_callback highlight_cb)
 996 #else
 997 lw_create_widget (type, name, id, val, parent, pop_up_p, pre_activate_cb,
 998                   selection_cb, post_activate_cb, highlight_cb)
 999      char* type;
1000      char* name;
1001      LWLIB_ID id;
1002      widget_value* val;
1003      Widget parent;
1004      Boolean pop_up_p;
1005      lw_callback pre_activate_cb;
1006      lw_callback selection_cb;
1007      lw_callback post_activate_cb;
1008      lw_callback highlight_cb;
1009 #endif
1010 {
1011   lw_register_widget (type, name, id, val, pre_activate_cb, selection_cb,
1012                       post_activate_cb, highlight_cb);
1013   return lw_make_widget (id, parent, pop_up_p);
1014 }
1015
1016 \f
1017 /* destroying the widgets */
1018 static void
1019 destroy_one_instance (instance)
1020      widget_instance* instance;
1021 {
1022   /* Remove the destroy callback on the widget; that callback will try to
1023      dereference the instance object (to set its widget slot to 0, since the
1024      widget is dead.)  Since the instance is now dead, we don't have to worry
1025      about the fact that its widget is dead too.
1026
1027      This happens in the Phase2Destroy of the widget, so this callback would
1028      not have been run until arbitrarily long after the instance was freed.
1029    */
1030   if (instance->widget)
1031     XtRemoveCallback (instance->widget, XtNdestroyCallback,
1032                       mark_widget_destroyed, (XtPointer)instance);
1033
1034   if (instance->widget)
1035     {
1036       /* The else are pretty tricky here, including the empty statement
1037          at the end because it would be very bad to destroy a widget
1038          twice. */
1039 #if defined (USE_LUCID)
1040       if (lw_lucid_widget_p (instance->widget))
1041         xlw_destroy_instance (instance);
1042       else
1043 #endif
1044 #if defined (USE_MOTIF)
1045       if (lw_motif_widget_p (instance->widget))
1046         xm_destroy_instance (instance);
1047       else
1048 #endif
1049 #if defined (USE_XAW)
1050       if (lw_xaw_widget_p (instance->widget))
1051         xaw_destroy_instance (instance);
1052       else
1053 #endif
1054         /* do not remove the empty statement */
1055         ;
1056     }
1057
1058   free_widget_instance (instance);
1059 }
1060
1061 void
1062 lw_destroy_widget (w)
1063      Widget w;
1064 {
1065   widget_instance* instance = get_widget_instance (w, True);
1066
1067   if (instance)
1068     {
1069       widget_info *info = instance->info;
1070       /* instance has already been removed from the list; free it */
1071       destroy_one_instance (instance);
1072       /* if there are no instances left, free the info too */
1073       if (!info->instances)
1074         lw_destroy_all_widgets (info->id);
1075     }
1076 }
1077
1078 void
1079 lw_destroy_all_widgets (id)
1080      LWLIB_ID id;
1081 {
1082   widget_info* info = get_widget_info (id, True);
1083   widget_instance* instance;
1084   widget_instance* next;
1085
1086   if (info)
1087     {
1088       for (instance = info->instances; instance; )
1089         {
1090           next = instance->next;
1091           destroy_one_instance (instance);
1092           instance = next;
1093         }
1094       free_widget_info (info);
1095     }
1096 }
1097
1098 void
1099 lw_destroy_everything ()
1100 {
1101   while (all_widget_info)
1102     lw_destroy_all_widgets (all_widget_info->id);
1103 }
1104
1105 void
1106 lw_destroy_all_pop_ups ()
1107 {
1108   widget_info* info;
1109   widget_info* next;
1110   widget_instance* instance;
1111
1112   for (info = all_widget_info; info; info = next)
1113     {
1114       next = info->next;
1115       instance = info->instances;
1116       if (instance && instance->pop_up_p)
1117         lw_destroy_all_widgets (info->id);
1118     }
1119 }
1120
1121 #ifdef USE_MOTIF
1122 extern Widget first_child (/* Widget */);       /* garbage */
1123 #endif
1124
1125 Widget
1126 lw_raise_all_pop_up_widgets ()
1127 {
1128   widget_info* info;
1129   widget_instance* instance;
1130   Widget result = NULL;
1131
1132   for (info = all_widget_info; info; info = info->next)
1133     for (instance = info->instances; instance; instance = instance->next)
1134       if (instance->pop_up_p)
1135         {
1136           Widget widget = instance->widget;
1137           if (widget)
1138             {
1139               if (XtIsManaged (widget)
1140 #ifdef USE_MOTIF
1141                   /* What a complete load of crap!!!!
1142                      When a dialogShell is on the screen, it is not managed!
1143                    */
1144                   || (lw_motif_widget_p (instance->widget) &&
1145                       XtIsManaged (first_child (widget)))
1146 #endif
1147                   )
1148                 {
1149                   if (!result)
1150                     result = widget;
1151                   XMapRaised (XtDisplay (widget), XtWindow (widget));
1152                 }
1153             }
1154         }
1155   return result;
1156 }
1157
1158 static void
1159 #ifdef PROTOTYPES
1160 lw_pop_all_widgets (LWLIB_ID id, Boolean up)
1161 #else
1162 lw_pop_all_widgets (id, up)
1163      LWLIB_ID id;
1164      Boolean up;
1165 #endif
1166 {
1167   widget_info* info = get_widget_info (id, False);
1168   widget_instance* instance;
1169
1170   if (info)
1171     for (instance = info->instances; instance; instance = instance->next)
1172       if (instance->pop_up_p && instance->widget)
1173         {
1174 #if defined (USE_LUCID)
1175           if (lw_lucid_widget_p (instance->widget))
1176             {
1177               XtRealizeWidget (instance->widget);
1178               xlw_pop_instance (instance, up);
1179             }
1180 #endif
1181 #if defined (USE_MOTIF)
1182           if (lw_motif_widget_p (instance->widget))
1183             {
1184               XtRealizeWidget (instance->widget);
1185               xm_pop_instance (instance, up);
1186             }
1187 #endif
1188 #if defined (USE_XAW)
1189           if (lw_xaw_widget_p (instance->widget))
1190             {
1191               XtRealizeWidget (XtParent (instance->widget));
1192               XtRealizeWidget (instance->widget);
1193               xaw_pop_instance (instance, up);
1194             }
1195 #endif
1196         }
1197 }
1198
1199 void
1200 lw_pop_up_all_widgets (id)
1201      LWLIB_ID id;
1202 {
1203   lw_pop_all_widgets (id, True);
1204 }
1205
1206 void
1207 lw_pop_down_all_widgets (id)
1208      LWLIB_ID id;
1209 {
1210   lw_pop_all_widgets (id, False);
1211 }
1212
1213 void
1214 lw_popup_menu (widget, event)
1215      Widget widget;
1216      XEvent *event;
1217 {
1218 #if defined (USE_LUCID)
1219   if (lw_lucid_widget_p (widget))
1220     xlw_popup_menu (widget, event);
1221 #endif
1222 #if defined (USE_MOTIF)
1223   if (lw_motif_widget_p (widget))
1224     xm_popup_menu (widget, event);
1225 #endif
1226 #if defined (USE_XAW)
1227   if (lw_xaw_widget_p (widget))
1228     xaw_popup_menu (widget, event);
1229 #endif
1230 }
1231
1232 \f/* get the values back */
1233 static Boolean
1234 get_one_value (instance, val)
1235      widget_instance* instance;
1236      widget_value* val;
1237 {
1238   Widget widget = name_to_widget (instance, val->name);
1239
1240   if (widget)
1241     {
1242 #if defined (USE_LUCID)
1243       if (lw_lucid_widget_p (instance->widget))
1244         xlw_update_one_value (instance, widget, val);
1245 #endif
1246 #if defined (USE_MOTIF)
1247       if (lw_motif_widget_p (instance->widget))
1248         xm_update_one_value (instance, widget, val);
1249 #endif
1250 #if defined (USE_XAW)
1251       if (lw_xaw_widget_p (instance->widget))
1252         xaw_update_one_value (instance, widget, val);
1253 #endif
1254       return True;
1255     }
1256   else
1257     return False;
1258 }
1259
1260 Boolean
1261 lw_get_some_values (id, val_out)
1262      LWLIB_ID id;
1263      widget_value* val_out;
1264 {
1265   widget_info* info = get_widget_info (id, False);
1266   widget_instance* instance;
1267   widget_value* val;
1268   Boolean result = False;
1269
1270   if (!info)
1271     return False;
1272
1273   instance = info->instances;
1274   if (!instance)
1275     return False;
1276
1277   for (val = val_out; val; val = val->next)
1278     if (get_one_value (instance, val))
1279       result = True;
1280
1281   return result;
1282 }
1283
1284 widget_value*
1285 lw_get_all_values (id)
1286      LWLIB_ID id;
1287 {
1288   widget_info* info = get_widget_info (id, False);
1289   widget_value* val = info->val;
1290   if (lw_get_some_values (id, val))
1291     return val;
1292   else
1293     return NULL;
1294 }
1295
1296 /* internal function used by the library dependent implementation to get the
1297    widget_value for a given widget in an instance */
1298 widget_value*
1299 lw_get_widget_value_for_widget (instance, w)
1300      widget_instance* instance;
1301      Widget w;
1302 {
1303   char* name = XtName (w);
1304   widget_value* cur;
1305   for (cur = instance->info->val; cur; cur = cur->next)
1306     if (!strcmp (cur->name, name))
1307       return cur;
1308   return NULL;
1309 }
1310
1311 \f/* update other instances value when one thing changed */
1312
1313 /* To forbid recursive calls */
1314 static Boolean lwlib_updating;
1315
1316 /* This function can be used as a an XtCallback for the widgets that get
1317   modified to update other instances of the widgets.  Closure should be the
1318   widget_instance. */
1319 void
1320 lw_internal_update_other_instances (widget, closure, call_data)
1321      Widget widget;
1322      XtPointer closure;
1323      XtPointer call_data;
1324 {
1325   widget_instance* instance = (widget_instance*)closure;
1326   char* name = XtName (widget);
1327   widget_info* info;
1328   widget_instance* cur;
1329   widget_value* val;
1330
1331   /* Avoid possibly infinite recursion.  */
1332   if (lwlib_updating)
1333     return;
1334
1335   /* protect against the widget being destroyed */
1336   if (XtWidgetBeingDestroyedP (widget))
1337     return;
1338
1339   /* Return immediately if there are no other instances */
1340   info = instance->info;
1341   if (!info->instances->next)
1342     return;
1343
1344   lwlib_updating = True;
1345
1346   for (val = info->val; val && strcmp (val->name, name); val = val->next);
1347
1348   if (val && get_one_value (instance, val))
1349     for (cur = info->instances; cur; cur = cur->next)
1350       if (cur != instance)
1351         set_one_value (cur, val, True);
1352
1353   lwlib_updating = False;
1354 }
1355
1356
1357 \f/* get the id */
1358
1359 LWLIB_ID
1360 lw_get_widget_id (w)
1361      Widget w;
1362 {
1363   widget_instance* instance = get_widget_instance (w, False);
1364
1365   return instance ? instance->info->id : 0;
1366 }
1367
1368 \f/* set the keyboard focus */
1369 void
1370 lw_set_keyboard_focus (parent, w)
1371      Widget parent;
1372      Widget w;
1373 {
1374 #if defined (USE_MOTIF)
1375   xm_set_keyboard_focus (parent, w);
1376 #else
1377   XtSetKeyboardFocus (parent, w);
1378 #endif
1379 }
1380
1381 \f/* Show busy */
1382 static void
1383 #ifdef PROTOTYPES
1384 show_one_widget_busy (Widget w, Boolean flag)
1385 #else
1386 show_one_widget_busy (w, flag)
1387      Widget w;
1388      Boolean flag;
1389 #endif
1390 {
1391   Pixel foreground = 0;
1392   Pixel background = 1;
1393   Widget widget_to_invert = XtNameToWidget (w, "*sheet");
1394   if (!widget_to_invert)
1395     widget_to_invert = w;
1396
1397   XtVaGetValues (widget_to_invert,
1398                  XtNforeground, &foreground,
1399                  XtNbackground, &background,
1400                  NULL);
1401   XtVaSetValues (widget_to_invert,
1402                  XtNforeground, background,
1403                  XtNbackground, foreground,
1404                  NULL);
1405 }
1406
1407 void
1408 #ifdef PROTOTYPES
1409 lw_show_busy (Widget w, Boolean busy)
1410 #else
1411 lw_show_busy (w, busy)
1412      Widget w;
1413      Boolean busy;
1414 #endif
1415 {
1416   widget_instance* instance = get_widget_instance (w, False);
1417   widget_info* info;
1418   widget_instance* next;
1419
1420   if (instance)
1421     {
1422       info = instance->info;
1423       if (info->busy != busy)
1424         {
1425           for (next = info->instances; next; next = next->next)
1426             if (next->widget)
1427               show_one_widget_busy (next->widget, busy);
1428           info->busy = busy;
1429         }
1430     }
1431 }
1432
1433 /* This hack exists because Lucid/Athena need to execute the strange
1434    function below to support geometry management. */
1435 void
1436 #ifdef PROTOTYPES
1437 lw_refigure_widget (Widget w, Boolean doit)
1438 #else
1439 lw_refigure_widget (w, doit)
1440      Widget w;
1441      Boolean doit;
1442 #endif
1443 {
1444 #if defined (USE_XAW)
1445   XawPanedSetRefigureMode (w, doit);
1446 #endif
1447 #if defined (USE_MOTIF)
1448   if (doit)
1449     XtManageChild (w);
1450   else
1451     XtUnmanageChild (w);
1452 #endif
1453 }
1454
1455 /* Toolkit independent way of determining if an event window is in the
1456    menubar. */
1457 Boolean
1458 lw_window_is_in_menubar (win, menubar_widget)
1459      Window win;
1460      Widget menubar_widget;
1461 {
1462   return menubar_widget
1463 #if defined (USE_LUCID)
1464       && XtWindow (menubar_widget) == win;
1465 #endif
1466 #if defined (USE_MOTIF)
1467       && ((XtWindow (menubar_widget) == win)
1468           || (XtWindowToWidget (XtDisplay (menubar_widget), win)
1469               && (XtParent (XtWindowToWidget (XtDisplay (menubar_widget), win))
1470                   == menubar_widget)));
1471 #endif
1472 }
1473
1474 /* Motif hack to set the main window areas. */
1475 void
1476 lw_set_main_areas (parent, menubar, work_area)
1477      Widget parent;
1478      Widget menubar;
1479      Widget work_area;
1480 {
1481 #if defined (USE_MOTIF)
1482   xm_set_main_areas (parent, menubar, work_area);
1483 #endif
1484 }
1485
1486 /* Manage resizing for Motif.  This disables resizing when the menubar
1487    is about to be modified. */
1488 void
1489 #ifdef PROTOTYPES
1490 lw_allow_resizing (Widget w, Boolean flag)
1491 #else
1492 lw_allow_resizing (w, flag)
1493      Widget w;
1494      Boolean flag;
1495 #endif
1496 {
1497 #if defined (USE_MOTIF)
1498   xm_manage_resizing (w, flag);
1499 #endif
1500 }
1501
1502
1503 /* Value is non-zero if LABEL is a menu separator.  If it is, *TYPE is
1504    set to an appropriate enumerator of type enum menu_separator.
1505    MOTIF_P non-zero means map separator types not supported by Motif
1506    to similar ones that are supported.  */
1507
1508 int
1509 lw_separator_p (label, type, motif_p)
1510      char *label;
1511      enum menu_separator *type;
1512      int motif_p;
1513 {
1514   int separator_p = 0;
1515
1516   if (strlen (label) >= 3
1517       && bcmp (label, "--:", 3) == 0)
1518     {
1519       static struct separator_table
1520       {
1521         char *name;
1522         enum menu_separator type;
1523       }
1524       separator_names[] =
1525       {
1526         {"space",                     SEPARATOR_NO_LINE},
1527         {"noLine",                    SEPARATOR_NO_LINE},
1528         {"singleLine",                SEPARATOR_SINGLE_LINE},
1529         {"doubleLine",                SEPARATOR_DOUBLE_LINE},
1530         {"singleDashedLine",          SEPARATOR_SINGLE_DASHED_LINE},
1531         {"doubleDashedLine",          SEPARATOR_DOUBLE_DASHED_LINE},
1532         {"shadowEtchedIn",            SEPARATOR_SHADOW_ETCHED_IN},
1533         {"shadowEtchedOut",           SEPARATOR_SHADOW_ETCHED_OUT},
1534         {"shadowEtchedInDash",        SEPARATOR_SHADOW_ETCHED_IN_DASH},
1535         {"shadowEtchedOutDash",       SEPARATOR_SHADOW_ETCHED_OUT_DASH},
1536         {"shadowDoubleEtchedIn",      SEPARATOR_SHADOW_DOUBLE_ETCHED_IN},
1537         {"shadowDoubleEtchedOut",     SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT},
1538         {"shadowDoubleEtchedInDash",  SEPARATOR_SHADOW_DOUBLE_ETCHED_IN_DASH},
1539         {"shadowDoubleEtchedOutDash", SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT_DASH},
1540         {0,0}
1541       };
1542
1543       int i;
1544
1545       label += 3;
1546       for (i = 0; separator_names[i].name; ++i)
1547         if (strcmp (label, separator_names[i].name) == 0)
1548           {
1549             separator_p = 1;
1550             *type = separator_names[i].type;
1551
1552             /* If separator type is not supported under Motif,
1553                use a similar one.  */
1554             if (motif_p && *type >= SEPARATOR_SHADOW_DOUBLE_ETCHED_IN)
1555               *type -= 4;
1556             break;
1557           }
1558     }
1559   else if (strlen (label) > 3
1560            && bcmp (label, "--", 2) == 0
1561            && label[2] != '-')
1562     {
1563       /* Alternative, more Emacs-style names.  */
1564       static struct separator_table
1565       {
1566         char *name;
1567         enum menu_separator type;
1568       }
1569       separator_names[] =
1570       {
1571         {"space",                        SEPARATOR_NO_LINE},
1572         {"no-line",                      SEPARATOR_NO_LINE},
1573         {"single-line",                  SEPARATOR_SINGLE_LINE},
1574         {"double-line",                  SEPARATOR_DOUBLE_LINE},
1575         {"single-dashed-line",           SEPARATOR_SINGLE_DASHED_LINE},
1576         {"double-dashed-line",           SEPARATOR_DOUBLE_DASHED_LINE},
1577         {"shadow-etched-in",             SEPARATOR_SHADOW_ETCHED_IN},
1578         {"shadow-etched-out",            SEPARATOR_SHADOW_ETCHED_OUT},
1579         {"shadow-etched-in-dash",        SEPARATOR_SHADOW_ETCHED_IN_DASH},
1580         {"shadow-etched-out-dash",       SEPARATOR_SHADOW_ETCHED_OUT_DASH},
1581         {"shadow-double-etched-in",      SEPARATOR_SHADOW_DOUBLE_ETCHED_IN},
1582         {"shadow-double-etched-out",     SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT},
1583         {"shadow-double-etched-in-dash", SEPARATOR_SHADOW_DOUBLE_ETCHED_IN_DASH},
1584         {"shadow-double-etched-out-dash",SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT_DASH},
1585         {0,0}
1586       };
1587
1588       int i;
1589
1590       label += 2;
1591       for (i = 0; separator_names[i].name; ++i)
1592         if (strcmp (label, separator_names[i].name) == 0)
1593           {
1594             separator_p = 1;
1595             *type = separator_names[i].type;
1596
1597             /* If separator type is not supported under Motif,
1598                use a similar one.  */
1599             if (motif_p && *type >= SEPARATOR_SHADOW_DOUBLE_ETCHED_IN)
1600               *type -= 4;
1601             break;
1602           }
1603     }
1604   else
1605     {
1606       /* Old-style separator, maybe.  It's a separator if it contains
1607          only dashes.  */
1608       while (*label == '-')
1609         ++label;
1610       separator_p = *label == 0;
1611       *type = SEPARATOR_SHADOW_ETCHED_IN;
1612     }
1613
1614   return separator_p;
1615 }
1616
1617 /* arch-tag: 3d730f36-a441-4a71-9971-48ef3b5a4d9f
1618    (do not change this comment) */