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  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 NeXT
  24 #undef __STRICT_BSD__ /* ick */
  25 #endif
  26
  27 #ifdef HAVE_CONFIG_H
  28 #include <config.h>
  29 #endif
  30
  31 #include "../src/lisp.h"
  32
  33 #include <sys/types.h>
  34 #include <stdio.h>
  35 #include <ctype.h>
  36 #include "lwlib-int.h"
  37 #include "lwlib-utils.h"
  38 #include <X11/StringDefs.h>
  39
  40 #if defined (USE_LUCID)
  41 #include "lwlib-Xlw.h"
  42 #endif
  43 #if defined (USE_MOTIF)
  44 #include "lwlib-Xm.h"
  45 #else /* not USE_MOTIF */
  46 #if defined (USE_LUCID)
  47 #define USE_XAW
  48 #endif /* not USE_MOTIF && USE_LUCID */
  49 #endif
  50 #if defined (USE_XAW)
  51 #ifdef HAVE_XAW3D
  52 #include <X11/Xaw3d/Paned.h>
  53 #else /* !HAVE_XAW3D */
  54 #include <X11/Xaw/Paned.h>
  55 #endif /* HAVE_XAW3D */
  56 #include "lwlib-Xaw.h"
  57 #endif
  58
  59 #if !defined (USE_LUCID) && !defined (USE_MOTIF)
  60  #error  At least one of USE_LUCID or USE_MOTIF must be defined.
  61 #endif
  62
  63 #ifndef max
  64 #define max(x, y) ((x) > (y) ? (x) : (y))
  65 #endif
  66
  67 /* List of all widgets managed by the library. */
  68 static widget_info*
  69 all_widget_info = NULL;
  70
  71 #ifdef USE_MOTIF
  72 char *lwlib_toolkit_type = "motif";
  73 #else
  74 char *lwlib_toolkit_type = "lucid";
  75 #endif
  76
  77 static widget_value *merge_widget_value P_ ((widget_value *,
  78                                              widget_value *,
  79                                              int, int *));
  80 static void instantiate_widget_instance P_ ((widget_instance *));
  81 static int my_strcasecmp P_ ((char *, char *));
  82 static void safe_free_str P_ ((char *));
  83 static void free_widget_value_tree P_ ((widget_value *));
  84 static widget_value *copy_widget_value_tree P_ ((widget_value *,
  85                                                  change_type));
  86 static widget_info *allocate_widget_info P_ ((char *, char *, LWLIB_ID,
  87                                               widget_value *,
  88                                               lw_callback, lw_callback,
  89                                               lw_callback, lw_callback));
  90 static void free_widget_info P_ ((widget_info *));
  91 static void mark_widget_destroyed P_ ((Widget, XtPointer, XtPointer));
  92 static widget_instance *allocate_widget_instance P_ ((widget_info *,
  93                                                       Widget, Boolean));
  94 static void free_widget_instance P_ ((widget_instance *));
  95 static widget_info *get_widget_info P_ ((LWLIB_ID, Boolean));
  96 static widget_instance *get_widget_instance P_ ((Widget, Boolean));
  97 static widget_instance *find_instance P_ ((LWLIB_ID, Widget, Boolean));
  98 static Boolean safe_strcmp P_ ((char *, char *));
  99 static Widget name_to_widget P_ ((widget_instance *, char *));
 100 static void set_one_value P_ ((widget_instance *, widget_value *, Boolean));
 101 static void update_one_widget_instance P_ ((widget_instance *, Boolean));
 102 static void update_all_widget_values P_ ((widget_info *, Boolean));
 103 static void initialize_widget_instance P_ ((widget_instance *));
 104 static widget_creation_function find_in_table P_ ((char *, widget_creation_entry *));
 105 static Boolean dialog_spec_p P_ ((char *));
 106 static void destroy_one_instance P_ ((widget_instance *));
 107 static void lw_pop_all_widgets P_ ((LWLIB_ID, Boolean));
 108 static Boolean get_one_value P_ ((widget_instance *, widget_value *));
 109 static void show_one_widget_busy P_ ((Widget, Boolean));
 110
 111 void
 112 lwlib_memset (address, value, length)
 113      char *address;
 114      int value;
 115      size_t length;
 116 {
 117   int i;
 118
 119   for (i = 0; i < length; i++)
 120     address[i] = value;
 121 }
 122
 123 void
 124 lwlib_bcopy (from, to, length)
 125      char *from;
 126      char *to;
 127      int length;
 128 {
 129   int i;
 130
 131   for (i = 0; i < length; i++)
 132     to[i] = from[i];
 133 }
 134 \f/* utility functions for widget_instance and widget_info */
 135 char *
 136 safe_strdup (s)
 137      const char *s;
 138 {
 139   char *result;
 140   if (! s) return 0;
 141   result = (char *) malloc (strlen (s) + 1);
 142   if (! result)
 143     return 0;
 144   strcpy (result, s);
 145   return result;
 146 }
 147
 148 /* Like strcmp but ignore differences in case.  */
 149
 150 static int
 151 my_strcasecmp (s1, s2)
 152      char *s1, *s2;
 153 {
 154   while (1)
 155     {
 156       int c1 = *s1++;
 157       int c2 = *s2++;
 158       if (isupper (c1))
 159         c1 = tolower (c1);
 160       if (isupper (c2))
 161         c2 = tolower (c2);
 162       if (c1 != c2)
 163         return (c1 > c2 ? 1 : -1);
 164       if (c1 == 0)
 165         return 0;
 166     }
 167 }
 168
 169 static void
 170 safe_free_str (s)
 171      char *s;
 172 {
 173   free (s);
 174 }
 175
 176 static widget_value *widget_value_free_list = 0;
 177 static int malloc_cpt = 0;
 178
 179 widget_value *
 180 malloc_widget_value ()
 181 {
 182   widget_value *wv;
 183   if (widget_value_free_list)
 184     {
 185       wv = widget_value_free_list;
 186       widget_value_free_list = wv->free_list;
 187       wv->free_list = 0;
 188     }
 189   else
 190     {
 191       wv = (widget_value *) malloc (sizeof (widget_value));
 192       malloc_cpt++;
 193     }
 194   lwlib_memset ((void*) wv, 0, sizeof (widget_value));
 195   return wv;
 196 }
 197
 198 /* this is analogous to free().  It frees only what was allocated
 199    by malloc_widget_value(), and no substructures.
 200  */
 201 void
 202 free_widget_value (wv)
 203      widget_value *wv;
 204 {
 205   if (wv->free_list)
 206     abort ();
 207
 208   if (malloc_cpt > 25)
 209     {
 210       /* When the number of already allocated cells is too big,
 211          We free it.  */
 212       free (wv);
 213       malloc_cpt--;
 214     }
 215   else
 216     {
 217       wv->free_list = widget_value_free_list;
 218       widget_value_free_list = wv;
 219     }
 220 }
 221
 222 static void
 223 free_widget_value_tree (wv)
 224      widget_value *wv;
 225 {
 226   if (!wv)
 227     return;
 228
 229   free (wv->name);
 230   free (wv->value);
 231   free (wv->key);
 232
 233   wv->name = wv->value = wv->key = (char *) 0xDEADBEEF;
 234
 235   if (wv->toolkit_data && wv->free_toolkit_data)
 236     {
 237       XtFree (wv->toolkit_data);
 238       wv->toolkit_data = (void *) 0xDEADBEEF;
 239     }
 240
 241   if (wv->contents && (wv->contents != (widget_value*)1))
 242     {
 243       free_widget_value_tree (wv->contents);
 244       wv->contents = (widget_value *) 0xDEADBEEF;
 245     }
 246   if (wv->next)
 247     {
 248       free_widget_value_tree (wv->next);
 249       wv->next = (widget_value *) 0xDEADBEEF;
 250     }
 251   free_widget_value (wv);
 252 }
 253
 254 static widget_value *
 255 copy_widget_value_tree (val, change)
 256      widget_value* val;
 257      change_type change;
 258 {
 259   widget_value* copy;
 260
 261   if (!val)
 262     return NULL;
 263   if (val == (widget_value *) 1)
 264     return val;
 265
 266   copy = malloc_widget_value ();
 267   copy->name = safe_strdup (val->name);
 268   copy->value = safe_strdup (val->value);
 269   copy->key = safe_strdup (val->key);
 270   copy->help = val->help;
 271   copy->enabled = val->enabled;
 272   copy->button_type = val->button_type;
 273   copy->selected = val->selected;
 274   copy->edited = False;
 275   copy->change = change;
 276   copy->this_one_change = change;
 277   copy->contents = copy_widget_value_tree (val->contents, change);
 278   copy->call_data = val->call_data;
 279   copy->next = copy_widget_value_tree (val->next, change);
 280   copy->toolkit_data = NULL;
 281   copy->free_toolkit_data = False;
 282   return copy;
 283 }
 284
 285 static widget_info *
 286 allocate_widget_info (type, name, id, val, pre_activate_cb,
 287                       selection_cb, post_activate_cb, highlight_cb)
 288      char* type;
 289      char* name;
 290      LWLIB_ID id;
 291      widget_value* val;
 292      lw_callback pre_activate_cb;
 293      lw_callback selection_cb;
 294      lw_callback post_activate_cb;
 295      lw_callback highlight_cb;
 296 {
 297   widget_info* info = (widget_info*)malloc (sizeof (widget_info));
 298   info->type = safe_strdup (type);
 299   info->name = safe_strdup (name);
 300   info->id = id;
 301   info->val = copy_widget_value_tree (val, STRUCTURAL_CHANGE);
 302   info->busy = False;
 303   info->pre_activate_cb = pre_activate_cb;
 304   info->selection_cb = selection_cb;
 305   info->post_activate_cb = post_activate_cb;
 306   info->highlight_cb = highlight_cb;
 307   info->instances = NULL;
 308
 309   info->next = all_widget_info;
 310   all_widget_info = info;
 311
 312   return info;
 313 }
 314
 315 static void
 316 free_widget_info (info)
 317      widget_info* info;
 318 {
 319   safe_free_str (info->type);
 320   safe_free_str (info->name);
 321   free_widget_value_tree (info->val);
 322   lwlib_memset ((void*)info, 0xDEADBEEF, sizeof (widget_info));
 323   free (info);
 324 }
 325
 326 static void
 327 mark_widget_destroyed (widget, closure, call_data)
 328      Widget widget;
 329      XtPointer closure;
 330      XtPointer call_data;
 331 {
 332   widget_instance* instance = (widget_instance*)closure;
 333
 334   /* be very conservative */
 335   if (instance->widget == widget)
 336     instance->widget = NULL;
 337 }
 338
 339 /* The messy #ifdef PROTOTYPES here and elsewhere are prompted by a
 340    flood of warnings about argument promotion from proprietary ISO C
 341    compilers.  (etags still only makes one entry for each function.)  */
 342 static widget_instance *
 343 #ifdef PROTOTYPES
 344 allocate_widget_instance (widget_info* info, Widget parent, Boolean pop_up_p)
 345 #else
 346 allocate_widget_instance (info, parent, pop_up_p)
 347      widget_info* info;
 348      Widget parent;
 349      Boolean pop_up_p;
 350 #endif
 351 {
 352   widget_instance* instance =
 353     (widget_instance*)malloc (sizeof (widget_instance));
 354   bzero (instance, sizeof *instance);
 355   instance->parent = parent;
 356   instance->pop_up_p = pop_up_p;
 357   instance->info = info;
 358   instance->next = info->instances;
 359   info->instances = instance;
 360
 361   instantiate_widget_instance (instance);
 362
 363   XtAddCallback (instance->widget, XtNdestroyCallback,
 364                  mark_widget_destroyed, (XtPointer)instance);
 365   return instance;
 366 }
 367
 368 static void
 369 free_widget_instance (instance)
 370      widget_instance* instance;
 371 {
 372   lwlib_memset ((void*)instance, 0xDEADBEEF, sizeof (widget_instance));
 373   free (instance);
 374 }
 375
 376 static widget_info *
 377 #ifdef PROTOTYPES
 378 get_widget_info (LWLIB_ID id, Boolean remove_p)
 379 #else
 380 get_widget_info (id, remove_p)
 381      LWLIB_ID id;
 382      Boolean remove_p;
 383 #endif
 384 {
 385   widget_info* info;
 386   widget_info* prev;
 387   for (prev = NULL, info = all_widget_info;
 388        info;
 389        prev = info, info = info->next)
 390     if (info->id == id)
 391      {
 392        if (remove_p)
 393          {
 394            if (prev)
 395              prev->next = info->next;
 396            else
 397              all_widget_info = info->next;
 398          }
 399       return info;
 400      }
 401   return NULL;
 402 }
 403
 404 /* Internal function used by the library dependent implementation to get the
 405    widget_value for a given widget in an instance */
 406 widget_info *
 407 lw_get_widget_info (id)
 408      LWLIB_ID id;
 409 {
 410   return get_widget_info (id, 0);
 411 }
 412
 413 static widget_instance *
 414 #ifdef PROTOTYPES
 415 get_widget_instance (Widget widget, Boolean remove_p)
 416 #else
 417 get_widget_instance (widget, remove_p)
 418      Widget widget;
 419      Boolean remove_p;
 420 #endif
 421 {
 422   widget_info* info;
 423   widget_instance* instance;
 424   widget_instance* prev;
 425   for (info = all_widget_info; info; info = info->next)
 426     for (prev = NULL, instance = info->instances;
 427          instance;
 428          prev = instance, instance = instance->next)
 429       if (instance->widget == widget)
 430         {
 431           if (remove_p)
 432             {
 433               if (prev)
 434                 prev->next = instance->next;
 435               else
 436                 info->instances = instance->next;
 437             }
 438           return instance;
 439         }
 440   return (widget_instance *) 0;
 441 }
 442
 443 /* Value is a pointer to the widget_instance corresponding to
 444    WIDGET, or null if WIDGET is not a lwlib widget.  */
 445
 446 widget_instance *
 447 lw_get_widget_instance (widget)
 448      Widget widget;
 449 {
 450   return get_widget_instance (widget, False);
 451 }
 452
 453 static widget_instance*
 454 #ifdef PROTOTYPES
 455 find_instance (LWLIB_ID id, Widget parent, Boolean pop_up_p)
 456 #else
 457 find_instance (id, parent, pop_up_p)
 458      LWLIB_ID id;
 459      Widget parent;
 460      Boolean pop_up_p;
 461 #endif
 462 {
 463   widget_info* info = get_widget_info (id, False);
 464   widget_instance* instance;
 465
 466   if (info)
 467     for (instance = info->instances; instance; instance = instance->next)
 468       if (instance->parent == parent && instance->pop_up_p == pop_up_p)
 469         return instance;
 470
 471   return NULL;
 472 }
 473
 474 \f
 475 /* utility function for widget_value */
 476 static Boolean
 477 safe_strcmp (s1, s2)
 478      char* s1;
 479      char* s2;
 480 {
 481   if (!!s1 ^ !!s2) return True;
 482   return (s1 && s2) ? strcmp (s1, s2) : s1 ? False : !!s2;
 483 }
 484
 485
 486 #if 0
 487 # define EXPLAIN(name, oc, nc, desc, a1, a2)                            \
 488    printf ("Change: \"%s\"\tmax(%s=%d,%s=%d)\t%s %d %d\n",              \
 489            name,                                                        \
 490            (oc == NO_CHANGE ? "none" :                                  \
 491             (oc == INVISIBLE_CHANGE ? "invisible" :                     \
 492              (oc == VISIBLE_CHANGE ? "visible" :                        \
 493               (oc == STRUCTURAL_CHANGE ? "structural" : "???")))),      \
 494            oc,                                                          \
 495            (nc == NO_CHANGE ? "none" :                                  \
 496             (nc == INVISIBLE_CHANGE ? "invisible" :                     \
 497              (nc == VISIBLE_CHANGE ? "visible" :                        \
 498               (nc == STRUCTURAL_CHANGE ? "structural" : "???")))),      \
 499            nc, desc, a1, a2)
 500 #else
 501 # define EXPLAIN(name, oc, nc, desc, a1, a2)
 502 #endif
 503
 504
 505 static widget_value *
 506 merge_widget_value (val1, val2, level, change_p)
 507      widget_value* val1;
 508      widget_value* val2;
 509      int level;
 510      int *change_p;
 511 {
 512   change_type change, this_one_change;
 513   widget_value* merged_next;
 514   widget_value* merged_contents;
 515
 516   if (!val1)
 517     {
 518       if (val2)
 519         {
 520           *change_p = 1;
 521           return copy_widget_value_tree (val2, STRUCTURAL_CHANGE);
 522         }
 523       else
 524         return NULL;
 525     }
 526   if (!val2)
 527     {
 528       *change_p = 1;
 529       free_widget_value_tree (val1);
 530       return NULL;
 531     }
 532
 533   change = NO_CHANGE;
 534
 535   if (safe_strcmp (val1->name, val2->name))
 536     {
 537       EXPLAIN (val1->name, change, STRUCTURAL_CHANGE, "name change",
 538                val1->name, val2->name);
 539       change = max (change, STRUCTURAL_CHANGE);
 540       safe_free_str (val1->name);
 541       val1->name = safe_strdup (val2->name);
 542     }
 543   if (safe_strcmp (val1->value, val2->value))
 544     {
 545       EXPLAIN (val1->name, change, VISIBLE_CHANGE, "value change",
 546                val1->value, val2->value);
 547       change = max (change, VISIBLE_CHANGE);
 548       safe_free_str (val1->value);
 549       val1->value = safe_strdup (val2->value);
 550     }
 551   if (safe_strcmp (val1->key, val2->key))
 552     {
 553       EXPLAIN (val1->name, change, VISIBLE_CHANGE, "key change",
 554                val1->key, val2->key);
 555       change = max (change, VISIBLE_CHANGE);
 556       safe_free_str (val1->key);
 557       val1->key = safe_strdup (val2->key);
 558     }
 559   if (! EQ (val1->help, val2->help))
 560     {
 561       EXPLAIN (val1->name, change, VISIBLE_CHANGE, "help change",
 562                val1->help, val2->help);
 563       change = max (change, VISIBLE_CHANGE);
 564       val1->help = val2->help;
 565     }
 566   if (val1->enabled != val2->enabled)
 567     {
 568       EXPLAIN (val1->name, change, VISIBLE_CHANGE, "enablement change",
 569                val1->enabled, val2->enabled);
 570       change = max (change, VISIBLE_CHANGE);
 571       val1->enabled = val2->enabled;
 572     }
 573   if (val1->button_type != val2->button_type)
 574     {
 575       EXPLAIN (val1->name, change, VISIBLE_CHANGE, "button type change",
 576                val1->button_type, val2->button_type);
 577       change = max (change, VISIBLE_CHANGE);
 578       val1->button_type = val2->button_type;
 579     }
 580   if (val1->selected != val2->selected)
 581     {
 582       EXPLAIN (val1->name, change, VISIBLE_CHANGE, "selection change",
 583                val1->selected, val2->selected);
 584       change = max (change, VISIBLE_CHANGE);
 585       val1->selected = val2->selected;
 586     }
 587   if (val1->call_data != val2->call_data)
 588     {
 589       EXPLAIN (val1->name, change, INVISIBLE_CHANGE, "call-data change",
 590                val1->call_data, val2->call_data);
 591       change = max (change, INVISIBLE_CHANGE);
 592       val1->call_data = val2->call_data;
 593     }
 594
 595   if (level > 0)
 596     {
 597       merged_contents =
 598         merge_widget_value (val1->contents, val2->contents, level - 1,
 599                             change_p);
 600
 601       if (val1->contents && !merged_contents)
 602         {
 603           /* This used to say INVISIBLE_CHANGE,
 604              but it is visible and vitally important when
 605              the contents of the menu bar itself are entirely deleted.
 606
 607              But maybe it doesn't matter.  This fails to fix the bug.  */
 608           EXPLAIN (val1->name, change, STRUCTURAL_CHANGE, "(contents gone)",
 609                    0, 0);
 610           change = max (change, STRUCTURAL_CHANGE);
 611         }
 612       else if (merged_contents && merged_contents->change != NO_CHANGE)
 613         {
 614           EXPLAIN (val1->name, change, INVISIBLE_CHANGE, "(contents change)",
 615                    0, 0);
 616           change = max (change, INVISIBLE_CHANGE);
 617 #if 0 /* This was replaced by the August 9 1996 change in lwlib-Xm.c.  */
 618 #ifdef USE_MOTIF
 619           change = max (merged_contents->change, change);
 620 #endif
 621 #endif
 622         }
 623
 624       val1->contents = merged_contents;
 625     }
 626
 627   this_one_change = change;
 628
 629   merged_next = merge_widget_value (val1->next, val2->next, level, change_p);
 630
 631   if (val1->next && !merged_next)
 632     {
 633       EXPLAIN (val1->name, change, STRUCTURAL_CHANGE, "(following gone)",
 634                0, 0);
 635       change = max (change, STRUCTURAL_CHANGE);
 636     }
 637   else if (merged_next)
 638     {
 639       if (merged_next->change)
 640         EXPLAIN (val1->name, change, merged_next->change, "(following change)",
 641                  0, 0);
 642       change = max (change, merged_next->change);
 643     }
 644
 645   val1->next = merged_next;
 646
 647   val1->this_one_change = this_one_change;
 648   val1->change = change;
 649
 650   if (change > NO_CHANGE && val1->toolkit_data)
 651     {
 652       *change_p = 1;
 653       if (val1->free_toolkit_data)
 654         XtFree (val1->toolkit_data);
 655       val1->toolkit_data = NULL;
 656     }
 657
 658   return val1;
 659 }
 660
 661 \f
 662 /* modifying the widgets */
 663 static Widget
 664 name_to_widget (instance, name)
 665      widget_instance* instance;
 666      char* name;
 667 {
 668   Widget widget = NULL;
 669
 670   if (!instance->widget)
 671     return NULL;
 672
 673   if (!strcmp (XtName (instance->widget), name))
 674     widget = instance->widget;
 675   else
 676     {
 677       int length = strlen (name) + 2;
 678       char* real_name = (char *) xmalloc (length);
 679       real_name [0] = '*';
 680       strcpy (real_name + 1, name);
 681
 682       widget = XtNameToWidget (instance->widget, real_name);
 683
 684       free (real_name);
 685     }
 686   return widget;
 687 }
 688
 689 static void
 690 #ifdef PROTOTYPES
 691 set_one_value (widget_instance* instance, widget_value* val, Boolean deep_p)
 692 #else
 693 set_one_value (instance, val, deep_p)
 694      widget_instance* instance;
 695      widget_value* val;
 696      Boolean deep_p;
 697 #endif
 698 {
 699   Widget widget = name_to_widget (instance, val->name);
 700
 701   if (widget)
 702     {
 703 #if defined (USE_LUCID)
 704       if (lw_lucid_widget_p (instance->widget))
 705         xlw_update_one_widget (instance, widget, val, deep_p);
 706 #endif
 707 #if defined (USE_MOTIF)
 708       if (lw_motif_widget_p (instance->widget))
 709         xm_update_one_widget (instance, widget, val, deep_p);
 710 #endif
 711 #if defined (USE_XAW)
 712       if (lw_xaw_widget_p (instance->widget))
 713         xaw_update_one_widget (instance, widget, val, deep_p);
 714 #endif
 715     }
 716 }
 717
 718 static void
 719 #ifdef PROTOTYPES
 720 update_one_widget_instance (widget_instance* instance, Boolean deep_p)
 721 #else
 722 update_one_widget_instance (instance, deep_p)
 723      widget_instance* instance;
 724      Boolean deep_p;
 725 #endif
 726 {
 727   widget_value *val;
 728
 729   if (!instance->widget)
 730     /* the widget was destroyed */
 731     return;
 732
 733   for (val = instance->info->val; val; val = val->next)
 734     if (val->change != NO_CHANGE)
 735       set_one_value (instance, val, deep_p);
 736 }
 737
 738 static void
 739 #ifdef PROTOTYPES
 740 update_all_widget_values (widget_info* info, Boolean deep_p)
 741 #else
 742 update_all_widget_values (info, deep_p)
 743      widget_info* info;
 744      Boolean deep_p;
 745 #endif
 746 {
 747   widget_instance* instance;
 748   widget_value* val;
 749
 750   for (instance = info->instances; instance; instance = instance->next)
 751     update_one_widget_instance (instance, deep_p);
 752
 753   for (val = info->val; val; val = val->next)
 754     val->change = NO_CHANGE;
 755 }
 756
 757 int
 758 #ifdef PROTOTYPES
 759 lw_modify_all_widgets (LWLIB_ID id, widget_value* val, Boolean deep_p)
 760 #else
 761 lw_modify_all_widgets (id, val, deep_p)
 762      LWLIB_ID id;
 763      widget_value* val;
 764      Boolean deep_p;
 765 #endif
 766 {
 767   widget_info* info = get_widget_info (id, False);
 768   widget_value* new_val;
 769   widget_value* next_new_val;
 770   widget_value* cur;
 771   widget_value* prev;
 772   widget_value* next;
 773   int           found;
 774   int change_p = 0;
 775
 776   if (!info)
 777     return 0;
 778
 779   for (new_val = val; new_val; new_val = new_val->next)
 780     {
 781       next_new_val = new_val->next;
 782       new_val->next = NULL;
 783       found = False;
 784       for (prev = NULL, cur = info->val; cur; prev = cur, cur = cur->next)
 785         if (!strcmp (cur->name, new_val->name))
 786           {
 787             found = True;
 788             next = cur->next;
 789             cur->next = NULL;
 790             cur = merge_widget_value (cur, new_val, deep_p ? 1000 : 1,
 791                                       &change_p);
 792             if (prev)
 793               prev->next = cur ? cur : next;
 794             else
 795               info->val = cur ? cur : next;
 796             if (cur)
 797               cur->next = next;
 798             break;
 799           }
 800       if (!found)
 801         {
 802           /* Could not find it, add it */
 803           if (prev)
 804             prev->next = copy_widget_value_tree (new_val, STRUCTURAL_CHANGE);
 805           else
 806             info->val = copy_widget_value_tree (new_val, STRUCTURAL_CHANGE);
 807           change_p = 1;
 808         }
 809       new_val->next = next_new_val;
 810     }
 811
 812   update_all_widget_values (info, deep_p);
 813   return change_p;
 814 }
 815
 816 \f
 817 /* creating the widgets */
 818
 819 static void
 820 initialize_widget_instance (instance)
 821      widget_instance* instance;
 822 {
 823   widget_value* val;
 824
 825   for (val = instance->info->val; val; val = val->next)
 826     val->change = STRUCTURAL_CHANGE;
 827
 828   update_one_widget_instance (instance, True);
 829
 830   for (val = instance->info->val; val; val = val->next)
 831     val->change = NO_CHANGE;
 832 }
 833
 834
 835 static widget_creation_function
 836 find_in_table (type, table)
 837      char* type;
 838      widget_creation_entry* table;
 839 {
 840   widget_creation_entry* cur;
 841   for (cur = table; cur->type; cur++)
 842     if (!my_strcasecmp (type, cur->type))
 843       return cur->function;
 844   return NULL;
 845 }
 846
 847 static Boolean
 848 dialog_spec_p (name)
 849      char* name;
 850 {
 851   /* return True if name matches [EILPQeilpq][1-9][Bb] or
 852      [EILPQeilpq][1-9][Bb][Rr][1-9] */
 853   if (!name)
 854     return False;
 855
 856   switch (name [0])
 857     {
 858     case 'E': case 'I': case 'L': case 'P': case 'Q':
 859     case 'e': case 'i': case 'l': case 'p': case 'q':
 860       if (name [1] >= '0' && name [1] <= '9')
 861         {
 862           if (name [2] != 'B' && name [2] != 'b')
 863             return False;
 864           if (!name [3])
 865             return True;
 866           if ((name [3] == 'T' || name [3] == 't') && !name [4])
 867             return True;
 868           if ((name [3] == 'R' || name [3] == 'r')
 869               && name [4] >= '0' && name [4] <= '9' && !name [5])
 870             return True;
 871           return False;
 872         }
 873       else
 874         return False;
 875
 876     default:
 877       return False;
 878     }
 879 }
 880
 881 static void
 882 instantiate_widget_instance (instance)
 883      widget_instance* instance;
 884 {
 885   widget_creation_function function = NULL;
 886
 887 #if defined (USE_LUCID)
 888   if (!function)
 889     function = find_in_table (instance->info->type, xlw_creation_table);
 890 #endif
 891 #if defined(USE_MOTIF)
 892   if (!function)
 893     function = find_in_table (instance->info->type, xm_creation_table);
 894 #endif
 895 #if defined (USE_XAW)
 896   if (!function)
 897     function = find_in_table (instance->info->type, xaw_creation_table);
 898 #endif
 899
 900   if (!function)
 901     {
 902       if (dialog_spec_p (instance->info->type))
 903         {
 904 #if defined (USE_LUCID)
 905           /* not yet */
 906 #endif
 907 #if defined(USE_MOTIF)
 908           if (!function)
 909             function = xm_create_dialog;
 910 #endif
 911 #if defined (USE_XAW)
 912           if (!function)
 913             function = xaw_create_dialog;
 914 #endif
 915         }
 916     }
 917
 918   if (!function)
 919     {
 920       printf ("No creation function for widget type %s\n",
 921               instance->info->type);
 922       abort ();
 923     }
 924
 925   instance->widget = (*function) (instance);
 926
 927   if (!instance->widget)
 928     abort ();
 929
 930   /*   XtRealizeWidget (instance->widget);*/
 931 }
 932
 933 void
 934 lw_register_widget (type, name, id, val, pre_activate_cb,
 935                     selection_cb, post_activate_cb, highlight_cb)
 936      char* type;
 937      char* name;
 938      LWLIB_ID id;
 939      widget_value* val;
 940      lw_callback pre_activate_cb;
 941      lw_callback selection_cb;
 942      lw_callback post_activate_cb;
 943      lw_callback highlight_cb;
 944 {
 945   if (!get_widget_info (id, False))
 946     allocate_widget_info (type, name, id, val, pre_activate_cb, selection_cb,
 947                           post_activate_cb, highlight_cb);
 948 }
 949
 950 Widget
 951 #ifdef PROTOTYPES
 952 lw_get_widget (LWLIB_ID id, Widget parent, Boolean pop_up_p)
 953 #else
 954 lw_get_widget (id, parent, pop_up_p)
 955      LWLIB_ID id;
 956      Widget parent;
 957      Boolean pop_up_p;
 958 #endif
 959 {
 960   widget_instance* instance;
 961
 962   instance = find_instance (id, parent, pop_up_p);
 963   return instance ? instance->widget : NULL;
 964 }
 965
 966 Widget
 967 #ifdef PROTOTYPES
 968 lw_make_widget (LWLIB_ID id, Widget parent, Boolean pop_up_p)
 969 #else
 970 lw_make_widget (id, parent, pop_up_p)
 971      LWLIB_ID id;
 972      Widget parent;
 973      Boolean pop_up_p;
 974 #endif
 975 {
 976   widget_instance* instance;
 977   widget_info* info;
 978
 979   instance = find_instance (id, parent, pop_up_p);
 980   if (!instance)
 981     {
 982       info = get_widget_info (id, False);
 983       if (!info)
 984         return NULL;
 985       instance = allocate_widget_instance (info, parent, pop_up_p);
 986       initialize_widget_instance (instance);
 987     }
 988   if (!instance->widget)
 989     abort ();
 990   return instance->widget;
 991 }
 992
 993 Widget
 994 #ifdef PROTOTYPES
 995 lw_create_widget (char* type, char* name, LWLIB_ID id, widget_value* val,
 996                   Widget parent, Boolean pop_up_p,
 997                   lw_callback pre_activate_cb, lw_callback selection_cb,
 998                   lw_callback post_activate_cb, lw_callback highlight_cb)
 999 #else
1000 lw_create_widget (type, name, id, val, parent, pop_up_p, pre_activate_cb,
1001                   selection_cb, post_activate_cb, highlight_cb)
1002      char* type;
1003      char* name;
1004      LWLIB_ID id;
1005      widget_value* val;
1006      Widget parent;
1007      Boolean pop_up_p;
1008      lw_callback pre_activate_cb;
1009      lw_callback selection_cb;
1010      lw_callback post_activate_cb;
1011      lw_callback highlight_cb;
1012 #endif
1013 {
1014   lw_register_widget (type, name, id, val, pre_activate_cb, selection_cb,
1015                       post_activate_cb, highlight_cb);
1016   return lw_make_widget (id, parent, pop_up_p);
1017 }
1018
1019 \f
1020 /* destroying the widgets */
1021 static void
1022 destroy_one_instance (instance)
1023      widget_instance* instance;
1024 {
1025   /* Remove the destroy callback on the widget; that callback will try to
1026      dereference the instance object (to set its widget slot to 0, since the
1027      widget is dead.)  Since the instance is now dead, we don't have to worry
1028      about the fact that its widget is dead too.
1029
1030      This happens in the Phase2Destroy of the widget, so this callback would
1031      not have been run until arbitrarily long after the instance was freed.
1032    */
1033   if (instance->widget)
1034     XtRemoveCallback (instance->widget, XtNdestroyCallback,
1035                       mark_widget_destroyed, (XtPointer)instance);
1036
1037   if (instance->widget)
1038     {
1039       /* The else are pretty tricky here, including the empty statement
1040          at the end because it would be very bad to destroy a widget
1041          twice. */
1042 #if defined (USE_LUCID)
1043       if (lw_lucid_widget_p (instance->widget))
1044         xlw_destroy_instance (instance);
1045       else
1046 #endif
1047 #if defined (USE_MOTIF)
1048       if (lw_motif_widget_p (instance->widget))
1049         xm_destroy_instance (instance);
1050       else
1051 #endif
1052 #if defined (USE_XAW)
1053       if (lw_xaw_widget_p (instance->widget))
1054         xaw_destroy_instance (instance);
1055       else
1056 #endif
1057         /* do not remove the empty statement */
1058         ;
1059     }
1060
1061   free_widget_instance (instance);
1062 }
1063
1064 void
1065 lw_destroy_widget (w)
1066      Widget w;
1067 {
1068   widget_instance* instance = get_widget_instance (w, True);
1069
1070   if (instance)
1071     {
1072       widget_info *info = instance->info;
1073       /* instance has already been removed from the list; free it */
1074       destroy_one_instance (instance);
1075       /* if there are no instances left, free the info too */
1076       if (!info->instances)
1077         lw_destroy_all_widgets (info->id);
1078     }
1079 }
1080
1081 void
1082 lw_destroy_all_widgets (id)
1083      LWLIB_ID id;
1084 {
1085   widget_info* info = get_widget_info (id, True);
1086   widget_instance* instance;
1087   widget_instance* next;
1088
1089   if (info)
1090     {
1091       for (instance = info->instances; instance; )
1092         {
1093           next = instance->next;
1094           destroy_one_instance (instance);
1095           instance = next;
1096         }
1097       free_widget_info (info);
1098     }
1099 }
1100
1101 void
1102 lw_destroy_everything ()
1103 {
1104   while (all_widget_info)
1105     lw_destroy_all_widgets (all_widget_info->id);
1106 }
1107
1108 void
1109 lw_destroy_all_pop_ups ()
1110 {
1111   widget_info* info;
1112   widget_info* next;
1113   widget_instance* instance;
1114
1115   for (info = all_widget_info; info; info = next)
1116     {
1117       next = info->next;
1118       instance = info->instances;
1119       if (instance && instance->pop_up_p)
1120         lw_destroy_all_widgets (info->id);
1121     }
1122 }
1123
1124 #ifdef USE_MOTIF
1125 extern Widget first_child (/* Widget */);       /* garbage */
1126 #endif
1127
1128 Widget
1129 lw_raise_all_pop_up_widgets ()
1130 {
1131   widget_info* info;
1132   widget_instance* instance;
1133   Widget result = NULL;
1134
1135   for (info = all_widget_info; info; info = info->next)
1136     for (instance = info->instances; instance; instance = instance->next)
1137       if (instance->pop_up_p)
1138         {
1139           Widget widget = instance->widget;
1140           if (widget)
1141             {
1142               if (XtIsManaged (widget)
1143 #ifdef USE_MOTIF
1144                   /* What a complete load of crap!!!!
1145                      When a dialogShell is on the screen, it is not managed!
1146                    */
1147                   || (lw_motif_widget_p (instance->widget) &&
1148                       XtIsManaged (first_child (widget)))
1149 #endif
1150                   )
1151                 {
1152                   if (!result)
1153                     result = widget;
1154                   XMapRaised (XtDisplay (widget), XtWindow (widget));
1155                 }
1156             }
1157         }
1158   return result;
1159 }
1160
1161 static void
1162 #ifdef PROTOTYPES
1163 lw_pop_all_widgets (LWLIB_ID id, Boolean up)
1164 #else
1165 lw_pop_all_widgets (id, up)
1166      LWLIB_ID id;
1167      Boolean up;
1168 #endif
1169 {
1170   widget_info* info = get_widget_info (id, False);
1171   widget_instance* instance;
1172
1173   if (info)
1174     for (instance = info->instances; instance; instance = instance->next)
1175       if (instance->pop_up_p && instance->widget)
1176         {
1177 #if defined (USE_LUCID)
1178           if (lw_lucid_widget_p (instance->widget))
1179             {
1180               XtRealizeWidget (instance->widget);
1181               xlw_pop_instance (instance, up);
1182             }
1183 #endif
1184 #if defined (USE_MOTIF)
1185           if (lw_motif_widget_p (instance->widget))
1186             {
1187               XtRealizeWidget (instance->widget);
1188               xm_pop_instance (instance, up);
1189             }
1190 #endif
1191 #if defined (USE_XAW)
1192           if (lw_xaw_widget_p (instance->widget))
1193             {
1194               XtRealizeWidget (XtParent (instance->widget));
1195               XtRealizeWidget (instance->widget);
1196               xaw_pop_instance (instance, up);
1197             }
1198 #endif
1199         }
1200 }
1201
1202 void
1203 lw_pop_up_all_widgets (id)
1204      LWLIB_ID id;
1205 {
1206   lw_pop_all_widgets (id, True);
1207 }
1208
1209 void
1210 lw_pop_down_all_widgets (id)
1211      LWLIB_ID id;
1212 {
1213   lw_pop_all_widgets (id, False);
1214 }
1215
1216 void
1217 lw_popup_menu (widget, event)
1218      Widget widget;
1219      XEvent *event;
1220 {
1221 #if defined (USE_LUCID)
1222   if (lw_lucid_widget_p (widget))
1223     xlw_popup_menu (widget, event);
1224 #endif
1225 #if defined (USE_MOTIF)
1226   if (lw_motif_widget_p (widget))
1227     xm_popup_menu (widget, event);
1228 #endif
1229 #if defined (USE_XAW)
1230   if (lw_xaw_widget_p (widget))
1231     xaw_popup_menu (widget, event);
1232 #endif
1233 }
1234
1235 \f/* get the values back */
1236 static Boolean
1237 get_one_value (instance, val)
1238      widget_instance* instance;
1239      widget_value* val;
1240 {
1241   Widget widget = name_to_widget (instance, val->name);
1242
1243   if (widget)
1244     {
1245 #if defined (USE_LUCID)
1246       if (lw_lucid_widget_p (instance->widget))
1247         xlw_update_one_value (instance, widget, val);
1248 #endif
1249 #if defined (USE_MOTIF)
1250       if (lw_motif_widget_p (instance->widget))
1251         xm_update_one_value (instance, widget, val);
1252 #endif
1253 #if defined (USE_XAW)
1254       if (lw_xaw_widget_p (instance->widget))
1255         xaw_update_one_value (instance, widget, val);
1256 #endif
1257       return True;
1258     }
1259   else
1260     return False;
1261 }
1262
1263 Boolean
1264 lw_get_some_values (id, val_out)
1265      LWLIB_ID id;
1266      widget_value* val_out;
1267 {
1268   widget_info* info = get_widget_info (id, False);
1269   widget_instance* instance;
1270   widget_value* val;
1271   Boolean result = False;
1272
1273   if (!info)
1274     return False;
1275
1276   instance = info->instances;
1277   if (!instance)
1278     return False;
1279
1280   for (val = val_out; val; val = val->next)
1281     if (get_one_value (instance, val))
1282       result = True;
1283
1284   return result;
1285 }
1286
1287 widget_value*
1288 lw_get_all_values (id)
1289      LWLIB_ID id;
1290 {
1291   widget_info* info = get_widget_info (id, False);
1292   widget_value* val = info->val;
1293   if (lw_get_some_values (id, val))
1294     return val;
1295   else
1296     return NULL;
1297 }
1298
1299 /* internal function used by the library dependent implementation to get the
1300    widget_value for a given widget in an instance */
1301 widget_value*
1302 lw_get_widget_value_for_widget (instance, w)
1303      widget_instance* instance;
1304      Widget w;
1305 {
1306   char* name = XtName (w);
1307   widget_value* cur;
1308   for (cur = instance->info->val; cur; cur = cur->next)
1309     if (!strcmp (cur->name, name))
1310       return cur;
1311   return NULL;
1312 }
1313
1314 \f/* update other instances value when one thing changed */
1315
1316 /* To forbid recursive calls */
1317 static Boolean lwlib_updating;
1318
1319 /* This function can be used as a an XtCallback for the widgets that get
1320   modified to update other instances of the widgets.  Closure should be the
1321   widget_instance. */
1322 void
1323 lw_internal_update_other_instances (widget, closure, call_data)
1324      Widget widget;
1325      XtPointer closure;
1326      XtPointer call_data;
1327 {
1328   widget_instance* instance = (widget_instance*)closure;
1329   char* name = XtName (widget);
1330   widget_info* info;
1331   widget_instance* cur;
1332   widget_value* val;
1333
1334   /* Avoid possibly infinite recursion.  */
1335   if (lwlib_updating)
1336     return;
1337
1338   /* protect against the widget being destroyed */
1339   if (XtWidgetBeingDestroyedP (widget))
1340     return;
1341
1342   /* Return immediately if there are no other instances */
1343   info = instance->info;
1344   if (!info->instances->next)
1345     return;
1346
1347   lwlib_updating = True;
1348
1349   for (val = info->val; val && strcmp (val->name, name); val = val->next);
1350
1351   if (val && get_one_value (instance, val))
1352     for (cur = info->instances; cur; cur = cur->next)
1353       if (cur != instance)
1354         set_one_value (cur, val, True);
1355
1356   lwlib_updating = False;
1357 }
1358
1359
1360 \f/* get the id */
1361
1362 LWLIB_ID
1363 lw_get_widget_id (w)
1364      Widget w;
1365 {
1366   widget_instance* instance = get_widget_instance (w, False);
1367
1368   return instance ? instance->info->id : 0;
1369 }
1370
1371 \f/* set the keyboard focus */
1372 void
1373 lw_set_keyboard_focus (parent, w)
1374      Widget parent;
1375      Widget w;
1376 {
1377 #if defined (USE_MOTIF)
1378   xm_set_keyboard_focus (parent, w);
1379 #else
1380   XtSetKeyboardFocus (parent, w);
1381 #endif
1382 }
1383
1384 \f/* Show busy */
1385 static void
1386 #ifdef PROTOTYPES
1387 show_one_widget_busy (Widget w, Boolean flag)
1388 #else
1389 show_one_widget_busy (w, flag)
1390      Widget w;
1391      Boolean flag;
1392 #endif
1393 {
1394   Pixel foreground = 0;
1395   Pixel background = 1;
1396   Widget widget_to_invert = XtNameToWidget (w, "*sheet");
1397   if (!widget_to_invert)
1398     widget_to_invert = w;
1399
1400   XtVaGetValues (widget_to_invert,
1401                  XtNforeground, &foreground,
1402                  XtNbackground, &background,
1403                  NULL);
1404   XtVaSetValues (widget_to_invert,
1405                  XtNforeground, background,
1406                  XtNbackground, foreground,
1407                  NULL);
1408 }
1409
1410 void
1411 #ifdef PROTOTYPES
1412 lw_show_busy (Widget w, Boolean busy)
1413 #else
1414 lw_show_busy (w, busy)
1415      Widget w;
1416      Boolean busy;
1417 #endif
1418 {
1419   widget_instance* instance = get_widget_instance (w, False);
1420   widget_info* info;
1421   widget_instance* next;
1422
1423   if (instance)
1424     {
1425       info = instance->info;
1426       if (info->busy != busy)
1427         {
1428           for (next = info->instances; next; next = next->next)
1429             if (next->widget)
1430               show_one_widget_busy (next->widget, busy);
1431           info->busy = busy;
1432         }
1433     }
1434 }
1435
1436 /* This hack exists because Lucid/Athena need to execute the strange
1437    function below to support geometry management. */
1438 void
1439 #ifdef PROTOTYPES
1440 lw_refigure_widget (Widget w, Boolean doit)
1441 #else
1442 lw_refigure_widget (w, doit)
1443      Widget w;
1444      Boolean doit;
1445 #endif
1446 {
1447 #if defined (USE_XAW)
1448   XawPanedSetRefigureMode (w, doit);
1449 #endif
1450 #if defined (USE_MOTIF)
1451   if (doit)
1452     XtManageChild (w);
1453   else
1454     XtUnmanageChild (w);
1455 #endif
1456 }
1457
1458 /* Toolkit independent way of determining if an event window is in the
1459    menubar. */
1460 Boolean
1461 lw_window_is_in_menubar (win, menubar_widget)
1462      Window win;
1463      Widget menubar_widget;
1464 {
1465   return menubar_widget
1466 #if defined (USE_LUCID)
1467       && XtWindow (menubar_widget) == win;
1468 #endif
1469 #if defined (USE_MOTIF)
1470       && ((XtWindow (menubar_widget) == win)
1471           || (XtWindowToWidget (XtDisplay (menubar_widget), win)
1472               && (XtParent (XtWindowToWidget (XtDisplay (menubar_widget), win))
1473                   == menubar_widget)));
1474 #endif
1475 }
1476
1477 /* Motif hack to set the main window areas. */
1478 void
1479 lw_set_main_areas (parent, menubar, work_area)
1480      Widget parent;
1481      Widget menubar;
1482      Widget work_area;
1483 {
1484 #if defined (USE_MOTIF)
1485   xm_set_main_areas (parent, menubar, work_area);
1486 #endif
1487 }
1488
1489 /* Manage resizing for Motif.  This disables resizing when the menubar
1490    is about to be modified. */
1491 void
1492 #ifdef PROTOTYPES
1493 lw_allow_resizing (Widget w, Boolean flag)
1494 #else
1495 lw_allow_resizing (w, flag)
1496      Widget w;
1497      Boolean flag;
1498 #endif
1499 {
1500 #if defined (USE_MOTIF)
1501   xm_manage_resizing (w, flag);
1502 #endif
1503 }
1504
1505
1506 /* Value is non-zero if LABEL is a menu separator.  If it is, *TYPE is
1507    set to an appropriate enumerator of type enum menu_separator.
1508    MOTIF_P non-zero means map separator types not supported by Motif
1509    to similar ones that are supported.  */
1510
1511 int
1512 lw_separator_p (label, type, motif_p)
1513      char *label;
1514      enum menu_separator *type;
1515      int motif_p;
1516 {
1517   int separator_p = 0;
1518
1519   if (strlen (label) >= 3
1520       && bcmp (label, "--:", 3) == 0)
1521     {
1522       static struct separator_table
1523       {
1524         char *name;
1525         enum menu_separator type;
1526       }
1527       separator_names[] =
1528       {
1529         {"space",                     SEPARATOR_NO_LINE},
1530         {"noLine",                    SEPARATOR_NO_LINE},
1531         {"singleLine",                SEPARATOR_SINGLE_LINE},
1532         {"doubleLine",                SEPARATOR_DOUBLE_LINE},
1533         {"singleDashedLine",          SEPARATOR_SINGLE_DASHED_LINE},
1534         {"doubleDashedLine",          SEPARATOR_DOUBLE_DASHED_LINE},
1535         {"shadowEtchedIn",            SEPARATOR_SHADOW_ETCHED_IN},
1536         {"shadowEtchedOut",           SEPARATOR_SHADOW_ETCHED_OUT},
1537         {"shadowEtchedInDash",        SEPARATOR_SHADOW_ETCHED_IN_DASH},
1538         {"shadowEtchedOutDash",       SEPARATOR_SHADOW_ETCHED_OUT_DASH},
1539         {"shadowDoubleEtchedIn",      SEPARATOR_SHADOW_DOUBLE_ETCHED_IN},
1540         {"shadowDoubleEtchedOut",     SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT},
1541         {"shadowDoubleEtchedInDash",  SEPARATOR_SHADOW_DOUBLE_ETCHED_IN_DASH},
1542         {"shadowDoubleEtchedOutDash", SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT_DASH},
1543         {0,0}
1544       };
1545
1546       int i;
1547
1548       label += 3;
1549       for (i = 0; separator_names[i].name; ++i)
1550         if (strcmp (label, separator_names[i].name) == 0)
1551           {
1552             separator_p = 1;
1553             *type = separator_names[i].type;
1554
1555             /* If separator type is not supported under Motif,
1556                use a similar one.  */
1557             if (motif_p && *type >= SEPARATOR_SHADOW_DOUBLE_ETCHED_IN)
1558               *type -= 4;
1559             break;
1560           }
1561     }
1562   else if (strlen (label) > 3
1563            && bcmp (label, "--", 2) == 0
1564            && label[2] != '-')
1565     {
1566       /* Alternative, more Emacs-style names.  */
1567       static struct separator_table
1568       {
1569         char *name;
1570         enum menu_separator type;
1571       }
1572       separator_names[] =
1573       {
1574         {"space",                        SEPARATOR_NO_LINE},
1575         {"no-line",                      SEPARATOR_NO_LINE},
1576         {"single-line",                  SEPARATOR_SINGLE_LINE},
1577         {"double-line",                  SEPARATOR_DOUBLE_LINE},
1578         {"single-dashed-line",           SEPARATOR_SINGLE_DASHED_LINE},
1579         {"double-dashed-line",           SEPARATOR_DOUBLE_DASHED_LINE},
1580         {"shadow-etched-in",             SEPARATOR_SHADOW_ETCHED_IN},
1581         {"shadow-etched-out",            SEPARATOR_SHADOW_ETCHED_OUT},
1582         {"shadow-etched-in-dash",        SEPARATOR_SHADOW_ETCHED_IN_DASH},
1583         {"shadow-etched-out-dash",       SEPARATOR_SHADOW_ETCHED_OUT_DASH},
1584         {"shadow-double-etched-in",      SEPARATOR_SHADOW_DOUBLE_ETCHED_IN},
1585         {"shadow-double-etched-out",     SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT},
1586         {"shadow-double-etched-in-dash", SEPARATOR_SHADOW_DOUBLE_ETCHED_IN_DASH},
1587         {"shadow-double-etched-out-dash",SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT_DASH},
1588         {0,0}
1589       };
1590
1591       int i;
1592
1593       label += 2;
1594       for (i = 0; separator_names[i].name; ++i)
1595         if (strcmp (label, separator_names[i].name) == 0)
1596           {
1597             separator_p = 1;
1598             *type = separator_names[i].type;
1599
1600             /* If separator type is not supported under Motif,
1601                use a similar one.  */
1602             if (motif_p && *type >= SEPARATOR_SHADOW_DOUBLE_ETCHED_IN)
1603               *type -= 4;
1604             break;
1605           }
1606     }
1607   else
1608     {
1609       /* Old-style separator, maybe.  It's a separator if it contains
1610          only dashes.  */
1611       while (*label == '-')
1612         ++label;
1613       separator_p = *label == 0;
1614       *type = SEPARATOR_SHADOW_ETCHED_IN;
1615     }
1616
1617   return separator_p;
1618 }
1619
1620 /* arch-tag: 3d730f36-a441-4a71-9971-48ef3b5a4d9f
1621    (do not change this comment) */