lwlib/lwlib.c

   1 /* A general interface to the widgets of different toolkits.
   2    Copyright (C) 1992, 1993 Lucid, Inc.
   3
   4 This file is part of the Lucid Widget Library.
   5
   6 The Lucid Widget Library is free software; you can redistribute it and/or
   7 modify it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 The Lucid Widget Library is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Emacs; see the file COPYING.  If not, write to
  18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21 #ifdef NeXT
  22 #undef __STRICT_BSD__ /* ick */
  23 #endif
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include <config.h>
  27 #endif
  28
  29 #include "../src/lisp.h"
  30
  31 #include <sys/types.h>
  32 #include <stdio.h>
  33 #include <ctype.h>
  34 #include "lwlib-int.h"
  35 #include "lwlib-utils.h"
  36 #include <X11/StringDefs.h>
  37
  38 #if defined (USE_LUCID)
  39 #include "lwlib-Xlw.h"
  40 #endif
  41 #if defined (USE_MOTIF)
  42 #include "lwlib-Xm.h"
  43 #else /* not USE_MOTIF */
  44 #if defined (USE_LUCID)
  45 #define USE_XAW
  46 #endif /* not USE_MOTIF && USE_LUCID */
  47 #endif
  48 #if defined (USE_XAW)
  49 #include <X11/Xaw/Paned.h>
  50 #include "lwlib-Xaw.h"
  51 #endif
  52
  53 #if !defined (USE_LUCID) && !defined (USE_MOTIF)
  54  #error  At least one of USE_LUCID or USE_MOTIF must be defined.
  55 #endif
  56
  57 #ifndef max
  58 #define max(x, y) ((x) > (y) ? (x) : (y))
  59 #endif
  60
  61 /* List of all widgets managed by the library. */
  62 static widget_info*
  63 all_widget_info = NULL;
  64
  65 #ifdef USE_MOTIF
  66 char *lwlib_toolkit_type = "motif";
  67 #else
  68 char *lwlib_toolkit_type = "lucid";
  69 #endif
  70
  71 static widget_value *merge_widget_value P_ ((widget_value *,
  72                                              widget_value *,
  73                                              int, int *));
  74 static void instantiate_widget_instance P_ ((widget_instance *));
  75 static int my_strcasecmp P_ ((char *, char *));
  76 static void safe_free_str P_ ((char *));
  77 static void free_widget_value_tree P_ ((widget_value *));
  78 static widget_value *copy_widget_value_tree P_ ((widget_value *,
  79                                                  change_type));
  80 static widget_info *allocate_widget_info P_ ((char *, char *, LWLIB_ID,
  81                                               widget_value *,
  82                                               lw_callback, lw_callback,
  83                                               lw_callback, lw_callback));
  84 static void free_widget_info P_ ((widget_info *));
  85 static void mark_widget_destroyed P_ ((Widget, XtPointer, XtPointer));
  86 static widget_instance *allocate_widget_instance P_ ((widget_info *,
  87                                                       Widget, Boolean));
  88 static void free_widget_instance P_ ((widget_instance *));
  89 static widget_info *get_widget_info P_ ((LWLIB_ID, Boolean));
  90 static widget_instance *get_widget_instance P_ ((Widget, Boolean));
  91 static widget_instance *find_instance P_ ((LWLIB_ID, Widget, Boolean));
  92 static Boolean safe_strcmp P_ ((char *, char *));
  93 static Widget name_to_widget P_ ((widget_instance *, char *));
  94 static void set_one_value P_ ((widget_instance *, widget_value *, Boolean));
  95 static void update_one_widget_instance P_ ((widget_instance *, Boolean));
  96 static void update_all_widget_values P_ ((widget_info *, Boolean));
  97 static void initialize_widget_instance P_ ((widget_instance *));
  98 static widget_creation_function find_in_table P_ ((char *, widget_creation_entry *));
  99 static Boolean dialog_spec_p P_ ((char *));
 100 static void destroy_one_instance P_ ((widget_instance *));
 101 static void lw_pop_all_widgets P_ ((LWLIB_ID, Boolean));
 102 static Boolean get_one_value P_ ((widget_instance *, widget_value *));
 103 static void show_one_widget_busy P_ ((Widget, Boolean));
 104
 105 void
 106 lwlib_memset (address, value, length)
 107      char *address;
 108      int value;
 109      size_t length;
 110 {
 111   int i;
 112
 113   for (i = 0; i < length; i++)
 114     address[i] = value;
 115 }
 116
 117 void
 118 lwlib_bcopy (from, to, length)
 119      char *from;
 120      char *to;
 121      int length;
 122 {
 123   int i;
 124
 125   for (i = 0; i < length; i++)
 126     to[i] = from[i];
 127 }
 128 \f/* utility functions for widget_instance and widget_info */
 129 char *
 130 safe_strdup (s)
 131      const char *s;
 132 {
 133   char *result;
 134   if (! s) return 0;
 135   result = (char *) malloc (strlen (s) + 1);
 136   if (! result)
 137     return 0;
 138   strcpy (result, s);
 139   return result;
 140 }
 141
 142 /* Like strcmp but ignore differences in case.  */
 143
 144 static int
 145 my_strcasecmp (s1, s2)
 146      char *s1, *s2;
 147 {
 148   while (1)
 149     {
 150       int c1 = *s1++;
 151       int c2 = *s2++;
 152       if (isupper (c1))
 153         c1 = tolower (c1);
 154       if (isupper (c2))
 155         c2 = tolower (c2);
 156       if (c1 != c2)
 157         return (c1 > c2 ? 1 : -1);
 158       if (c1 == 0)
 159         return 0;
 160     }
 161 }
 162
 163 static void
 164 safe_free_str (s)
 165      char *s;
 166 {
 167   if (s) free (s);
 168 }
 169
 170 static widget_value *widget_value_free_list = 0;
 171 static int malloc_cpt = 0;
 172
 173 widget_value *
 174 malloc_widget_value ()
 175 {
 176   widget_value *wv;
 177   if (widget_value_free_list)
 178     {
 179       wv = widget_value_free_list;
 180       widget_value_free_list = wv->free_list;
 181       wv->free_list = 0;
 182     }
 183   else
 184     {
 185       wv = (widget_value *) malloc (sizeof (widget_value));
 186       malloc_cpt++;
 187     }
 188   lwlib_memset ((void*) wv, 0, sizeof (widget_value));
 189   return wv;
 190 }
 191
 192 /* this is analogous to free().  It frees only what was allocated
 193    by malloc_widget_value(), and no substructures.
 194  */
 195 void
 196 free_widget_value (wv)
 197      widget_value *wv;
 198 {
 199   if (wv->free_list)
 200     abort ();
 201
 202   if (malloc_cpt > 25)
 203     {
 204       /* When the number of already allocated cells is too big,
 205          We free it.  */
 206       free (wv);
 207       malloc_cpt--;
 208     }
 209   else
 210     {
 211       wv->free_list = widget_value_free_list;
 212       widget_value_free_list = wv;
 213     }
 214 }
 215
 216 static void
 217 free_widget_value_tree (wv)
 218      widget_value *wv;
 219 {
 220   if (!wv)
 221     return;
 222
 223   if (wv->name) free (wv->name);
 224   if (wv->value) free (wv->value);
 225   if (wv->key) free (wv->key);
 226
 227   wv->name = wv->value = wv->key = (char *) 0xDEADBEEF;
 228
 229   if (wv->toolkit_data && wv->free_toolkit_data)
 230     {
 231       XtFree (wv->toolkit_data);
 232       wv->toolkit_data = (void *) 0xDEADBEEF;
 233     }
 234
 235   if (wv->contents && (wv->contents != (widget_value*)1))
 236     {
 237       free_widget_value_tree (wv->contents);
 238       wv->contents = (widget_value *) 0xDEADBEEF;
 239     }
 240   if (wv->next)
 241     {
 242       free_widget_value_tree (wv->next);
 243       wv->next = (widget_value *) 0xDEADBEEF;
 244     }
 245   free_widget_value (wv);
 246 }
 247
 248 static widget_value *
 249 copy_widget_value_tree (val, change)
 250      widget_value* val;
 251      change_type change;
 252 {
 253   widget_value* copy;
 254
 255   if (!val)
 256     return NULL;
 257   if (val == (widget_value *) 1)
 258     return val;
 259
 260   copy = malloc_widget_value ();
 261   copy->name = safe_strdup (val->name);
 262   copy->value = safe_strdup (val->value);
 263   copy->key = safe_strdup (val->key);
 264   copy->help = val->help;
 265   copy->enabled = val->enabled;
 266   copy->button_type = val->button_type;
 267   copy->selected = val->selected;
 268   copy->edited = False;
 269   copy->change = change;
 270   copy->this_one_change = change;
 271   copy->contents = copy_widget_value_tree (val->contents, change);
 272   copy->call_data = val->call_data;
 273   copy->next = copy_widget_value_tree (val->next, change);
 274   copy->toolkit_data = NULL;
 275   copy->free_toolkit_data = False;
 276   return copy;
 277 }
 278
 279 static widget_info *
 280 allocate_widget_info (type, name, id, val, pre_activate_cb,
 281                       selection_cb, post_activate_cb, highlight_cb)
 282      char* type;
 283      char* name;
 284      LWLIB_ID id;
 285      widget_value* val;
 286      lw_callback pre_activate_cb;
 287      lw_callback selection_cb;
 288      lw_callback post_activate_cb;
 289      lw_callback highlight_cb;
 290 {
 291   widget_info* info = (widget_info*)malloc (sizeof (widget_info));
 292   info->type = safe_strdup (type);
 293   info->name = safe_strdup (name);
 294   info->id = id;
 295   info->val = copy_widget_value_tree (val, STRUCTURAL_CHANGE);
 296   info->busy = False;
 297   info->pre_activate_cb = pre_activate_cb;
 298   info->selection_cb = selection_cb;
 299   info->post_activate_cb = post_activate_cb;
 300   info->highlight_cb = highlight_cb;
 301   info->instances = NULL;
 302
 303   info->next = all_widget_info;
 304   all_widget_info = info;
 305
 306   return info;
 307 }
 308
 309 static void
 310 free_widget_info (info)
 311      widget_info* info;
 312 {
 313   safe_free_str (info->type);
 314   safe_free_str (info->name);
 315   free_widget_value_tree (info->val);
 316   lwlib_memset ((void*)info, 0xDEADBEEF, sizeof (widget_info));
 317   free (info);
 318 }
 319
 320 static void
 321 mark_widget_destroyed (widget, closure, call_data)
 322      Widget widget;
 323      XtPointer closure;
 324      XtPointer call_data;
 325 {
 326   widget_instance* instance = (widget_instance*)closure;
 327
 328   /* be very conservative */
 329   if (instance->widget == widget)
 330     instance->widget = NULL;
 331 }
 332
 333 /* The messy #ifdef PROTOTYPES here and elsewhere are prompted by a
 334    flood of warnings about argument promotion from proprietary ISO C
 335    compilers.  (etags still only makes one entry for each function.)  */
 336 static widget_instance *
 337 #ifdef PROTOTYPES
 338 allocate_widget_instance (widget_info* info, Widget parent, Boolean pop_up_p)
 339 #else
 340 allocate_widget_instance (info, parent, pop_up_p)
 341      widget_info* info;
 342      Widget parent;
 343      Boolean pop_up_p;
 344 #endif
 345 {
 346   widget_instance* instance =
 347     (widget_instance*)malloc (sizeof (widget_instance));
 348   bzero (instance, sizeof *instance);
 349   instance->parent = parent;
 350   instance->pop_up_p = pop_up_p;
 351   instance->info = info;
 352   instance->next = info->instances;
 353   info->instances = instance;
 354
 355   instantiate_widget_instance (instance);
 356
 357   XtAddCallback (instance->widget, XtNdestroyCallback,
 358                  mark_widget_destroyed, (XtPointer)instance);
 359   return instance;
 360 }
 361
 362 static void
 363 free_widget_instance (instance)
 364      widget_instance* instance;
 365 {
 366   lwlib_memset ((void*)instance, 0xDEADBEEF, sizeof (widget_instance));
 367   free (instance);
 368 }
 369
 370 static widget_info *
 371 #ifdef PROTOTYPES
 372 get_widget_info (LWLIB_ID id, Boolean remove_p)
 373 #else
 374 get_widget_info (id, remove_p)
 375      LWLIB_ID id;
 376      Boolean remove_p;
 377 #endif
 378 {
 379   widget_info* info;
 380   widget_info* prev;
 381   for (prev = NULL, info = all_widget_info;
 382        info;
 383        prev = info, info = info->next)
 384     if (info->id == id)
 385      {
 386        if (remove_p)
 387          {
 388            if (prev)
 389              prev->next = info->next;
 390            else
 391              all_widget_info = info->next;
 392          }
 393       return info;
 394      }
 395   return NULL;
 396 }
 397
 398 /* Internal function used by the library dependent implementation to get the
 399    widget_value for a given widget in an instance */
 400 widget_info *
 401 lw_get_widget_info (id)
 402      LWLIB_ID id;
 403 {
 404   return get_widget_info (id, 0);
 405 }
 406
 407 static widget_instance *
 408 #ifdef PROTOTYPES
 409 get_widget_instance (Widget widget, Boolean remove_p)
 410 #else
 411 get_widget_instance (widget, remove_p)
 412      Widget widget;
 413      Boolean remove_p;
 414 #endif
 415 {
 416   widget_info* info;
 417   widget_instance* instance;
 418   widget_instance* prev;
 419   for (info = all_widget_info; info; info = info->next)
 420     for (prev = NULL, instance = info->instances;
 421          instance;
 422          prev = instance, instance = instance->next)
 423       if (instance->widget == widget)
 424         {
 425           if (remove_p)
 426             {
 427               if (prev)
 428                 prev->next = instance->next;
 429               else
 430                 info->instances = instance->next;
 431             }
 432           return instance;
 433         }
 434   return (widget_instance *) 0;
 435 }
 436
 437 /* Value is a pointer to the widget_instance corresponding to
 438    WIDGET, or null if WIDGET is not a lwlib widget.  */
 439
 440 widget_instance *
 441 lw_get_widget_instance (widget)
 442      Widget widget;
 443 {
 444   return get_widget_instance (widget, False);
 445 }
 446
 447 static widget_instance*
 448 #ifdef PROTOTYPES
 449 find_instance (LWLIB_ID id, Widget parent, Boolean pop_up_p)
 450 #else
 451 find_instance (id, parent, pop_up_p)
 452      LWLIB_ID id;
 453      Widget parent;
 454      Boolean pop_up_p;
 455 #endif
 456 {
 457   widget_info* info = get_widget_info (id, False);
 458   widget_instance* instance;
 459
 460   if (info)
 461     for (instance = info->instances; instance; instance = instance->next)
 462       if (instance->parent == parent && instance->pop_up_p == pop_up_p)
 463         return instance;
 464
 465   return NULL;
 466 }
 467
 468 \f
 469 /* utility function for widget_value */
 470 static Boolean
 471 safe_strcmp (s1, s2)
 472      char* s1;
 473      char* s2;
 474 {
 475   if (!!s1 ^ !!s2) return True;
 476   return (s1 && s2) ? strcmp (s1, s2) : s1 ? False : !!s2;
 477 }
 478
 479
 480 #if 0
 481 # define EXPLAIN(name, oc, nc, desc, a1, a2)                            \
 482    printf ("Change: \"%s\"\tmax(%s=%d,%s=%d)\t%s %d %d\n",              \
 483            name,                                                        \
 484            (oc == NO_CHANGE ? "none" :                                  \
 485             (oc == INVISIBLE_CHANGE ? "invisible" :                     \
 486              (oc == VISIBLE_CHANGE ? "visible" :                        \
 487               (oc == STRUCTURAL_CHANGE ? "structural" : "???")))),      \
 488            oc,                                                          \
 489            (nc == NO_CHANGE ? "none" :                                  \
 490             (nc == INVISIBLE_CHANGE ? "invisible" :                     \
 491              (nc == VISIBLE_CHANGE ? "visible" :                        \
 492               (nc == STRUCTURAL_CHANGE ? "structural" : "???")))),      \
 493            nc, desc, a1, a2)
 494 #else
 495 # define EXPLAIN(name, oc, nc, desc, a1, a2)
 496 #endif
 497
 498
 499 static widget_value *
 500 merge_widget_value (val1, val2, level, change_p)
 501      widget_value* val1;
 502      widget_value* val2;
 503      int level;
 504      int *change_p;
 505 {
 506   change_type change, this_one_change;
 507   widget_value* merged_next;
 508   widget_value* merged_contents;
 509
 510   if (!val1)
 511     {
 512       if (val2)
 513         {
 514           *change_p = 1;
 515           return copy_widget_value_tree (val2, STRUCTURAL_CHANGE);
 516         }
 517       else
 518         return NULL;
 519     }
 520   if (!val2)
 521     {
 522       *change_p = 1;
 523       free_widget_value_tree (val1);
 524       return NULL;
 525     }
 526
 527   change = NO_CHANGE;
 528
 529   if (safe_strcmp (val1->name, val2->name))
 530     {
 531       EXPLAIN (val1->name, change, STRUCTURAL_CHANGE, "name change",
 532                val1->name, val2->name);
 533       change = max (change, STRUCTURAL_CHANGE);
 534       safe_free_str (val1->name);
 535       val1->name = safe_strdup (val2->name);
 536     }
 537   if (safe_strcmp (val1->value, val2->value))
 538     {
 539       EXPLAIN (val1->name, change, VISIBLE_CHANGE, "value change",
 540                val1->value, val2->value);
 541       change = max (change, VISIBLE_CHANGE);
 542       safe_free_str (val1->value);
 543       val1->value = safe_strdup (val2->value);
 544     }
 545   if (safe_strcmp (val1->key, val2->key))
 546     {
 547       EXPLAIN (val1->name, change, VISIBLE_CHANGE, "key change",
 548                val1->key, val2->key);
 549       change = max (change, VISIBLE_CHANGE);
 550       safe_free_str (val1->key);
 551       val1->key = safe_strdup (val2->key);
 552     }
 553   if (! EQ (val1->help, val2->help))
 554     {
 555       EXPLAIN (val1->name, change, VISIBLE_CHANGE, "help change",
 556                val1->help, val2->help);
 557       change = max (change, VISIBLE_CHANGE);
 558       val1->help = val2->help;
 559     }
 560   if (val1->enabled != val2->enabled)
 561     {
 562       EXPLAIN (val1->name, change, VISIBLE_CHANGE, "enablement change",
 563                val1->enabled, val2->enabled);
 564       change = max (change, VISIBLE_CHANGE);
 565       val1->enabled = val2->enabled;
 566     }
 567   if (val1->button_type != val2->button_type)
 568     {
 569       EXPLAIN (val1->name, change, VISIBLE_CHANGE, "button type change",
 570                val1->button_type, val2->button_type);
 571       change = max (change, VISIBLE_CHANGE);
 572       val1->button_type = val2->button_type;
 573     }
 574   if (val1->selected != val2->selected)
 575     {
 576       EXPLAIN (val1->name, change, VISIBLE_CHANGE, "selection change",
 577                val1->selected, val2->selected);
 578       change = max (change, VISIBLE_CHANGE);
 579       val1->selected = val2->selected;
 580     }
 581   if (val1->call_data != val2->call_data)
 582     {
 583       EXPLAIN (val1->name, change, INVISIBLE_CHANGE, "call-data change",
 584                val1->call_data, val2->call_data);
 585       change = max (change, INVISIBLE_CHANGE);
 586       val1->call_data = val2->call_data;
 587     }
 588
 589   if (level > 0)
 590     {
 591       merged_contents =
 592         merge_widget_value (val1->contents, val2->contents, level - 1,
 593                             change_p);
 594
 595       if (val1->contents && !merged_contents)
 596         {
 597           /* This used to say INVISIBLE_CHANGE,
 598              but it is visible and vitally important when
 599              the contents of the menu bar itself are entirely deleted.
 600
 601              But maybe it doesn't matter.  This fails to fix the bug.  */
 602           EXPLAIN (val1->name, change, STRUCTURAL_CHANGE, "(contents gone)",
 603                    0, 0);
 604           change = max (change, STRUCTURAL_CHANGE);
 605         }
 606       else if (merged_contents && merged_contents->change != NO_CHANGE)
 607         {
 608           EXPLAIN (val1->name, change, INVISIBLE_CHANGE, "(contents change)",
 609                    0, 0);
 610           change = max (change, INVISIBLE_CHANGE);
 611 #if 0 /* This was replaced by the August 9 1996 change in lwlib-Xm.c.  */
 612 #ifdef USE_MOTIF
 613           change = max (merged_contents->change, change);
 614 #endif
 615 #endif
 616         }
 617
 618       val1->contents = merged_contents;
 619     }
 620
 621   this_one_change = change;
 622
 623   merged_next = merge_widget_value (val1->next, val2->next, level, change_p);
 624
 625   if (val1->next && !merged_next)
 626     {
 627       EXPLAIN (val1->name, change, STRUCTURAL_CHANGE, "(following gone)",
 628                0, 0);
 629       change = max (change, STRUCTURAL_CHANGE);
 630     }
 631   else if (merged_next)
 632     {
 633       if (merged_next->change)
 634         EXPLAIN (val1->name, change, merged_next->change, "(following change)",
 635                  0, 0);
 636       change = max (change, merged_next->change);
 637     }
 638
 639   val1->next = merged_next;
 640
 641   val1->this_one_change = this_one_change;
 642   val1->change = change;
 643
 644   if (change > NO_CHANGE && val1->toolkit_data)
 645     {
 646       *change_p = 1;
 647       if (val1->free_toolkit_data)
 648         XtFree (val1->toolkit_data);
 649       val1->toolkit_data = NULL;
 650     }
 651
 652   return val1;
 653 }
 654
 655 \f
 656 /* modifying the widgets */
 657 static Widget
 658 name_to_widget (instance, name)
 659      widget_instance* instance;
 660      char* name;
 661 {
 662   Widget widget = NULL;
 663
 664   if (!instance->widget)
 665     return NULL;
 666
 667   if (!strcmp (XtName (instance->widget), name))
 668     widget = instance->widget;
 669   else
 670     {
 671       int length = strlen (name) + 2;
 672       char* real_name = (char *) xmalloc (length);
 673       real_name [0] = '*';
 674       strcpy (real_name + 1, name);
 675
 676       widget = XtNameToWidget (instance->widget, real_name);
 677
 678       free (real_name);
 679     }
 680   return widget;
 681 }
 682
 683 static void
 684 #ifdef PROTOTYPES
 685 set_one_value (widget_instance* instance, widget_value* val, Boolean deep_p)
 686 #else
 687 set_one_value (instance, val, deep_p)
 688      widget_instance* instance;
 689      widget_value* val;
 690      Boolean deep_p;
 691 #endif
 692 {
 693   Widget widget = name_to_widget (instance, val->name);
 694
 695   if (widget)
 696     {
 697 #if defined (USE_LUCID)
 698       if (lw_lucid_widget_p (instance->widget))
 699         xlw_update_one_widget (instance, widget, val, deep_p);
 700 #endif
 701 #if defined (USE_MOTIF)
 702       if (lw_motif_widget_p (instance->widget))
 703         xm_update_one_widget (instance, widget, val, deep_p);
 704 #endif
 705 #if defined (USE_XAW)
 706       if (lw_xaw_widget_p (instance->widget))
 707         xaw_update_one_widget (instance, widget, val, deep_p);
 708 #endif
 709     }
 710 }
 711
 712 static void
 713 #ifdef PROTOTYPES
 714 update_one_widget_instance (widget_instance* instance, Boolean deep_p)
 715 #else
 716 update_one_widget_instance (instance, deep_p)
 717      widget_instance* instance;
 718      Boolean deep_p;
 719 #endif
 720 {
 721   widget_value *val;
 722
 723   if (!instance->widget)
 724     /* the widget was destroyed */
 725     return;
 726
 727   for (val = instance->info->val; val; val = val->next)
 728     if (val->change != NO_CHANGE)
 729       set_one_value (instance, val, deep_p);
 730 }
 731
 732 static void
 733 #ifdef PROTOTYPES
 734 update_all_widget_values (widget_info* info, Boolean deep_p)
 735 #else
 736 update_all_widget_values (info, deep_p)
 737      widget_info* info;
 738      Boolean deep_p;
 739 #endif
 740 {
 741   widget_instance* instance;
 742   widget_value* val;
 743
 744   for (instance = info->instances; instance; instance = instance->next)
 745     update_one_widget_instance (instance, deep_p);
 746
 747   for (val = info->val; val; val = val->next)
 748     val->change = NO_CHANGE;
 749 }
 750
 751 int
 752 #ifdef PROTOTYPES
 753 lw_modify_all_widgets (LWLIB_ID id, widget_value* val, Boolean deep_p)
 754 #else
 755 lw_modify_all_widgets (id, val, deep_p)
 756      LWLIB_ID id;
 757      widget_value* val;
 758      Boolean deep_p;
 759 #endif
 760 {
 761   widget_info* info = get_widget_info (id, False);
 762   widget_value* new_val;
 763   widget_value* next_new_val;
 764   widget_value* cur;
 765   widget_value* prev;
 766   widget_value* next;
 767   int           found;
 768   int change_p = 0;
 769
 770   if (!info)
 771     return 0;
 772
 773   for (new_val = val; new_val; new_val = new_val->next)
 774     {
 775       next_new_val = new_val->next;
 776       new_val->next = NULL;
 777       found = False;
 778       for (prev = NULL, cur = info->val; cur; prev = cur, cur = cur->next)
 779         if (!strcmp (cur->name, new_val->name))
 780           {
 781             found = True;
 782             next = cur->next;
 783             cur->next = NULL;
 784             cur = merge_widget_value (cur, new_val, deep_p ? 1000 : 1,
 785                                       &change_p);
 786             if (prev)
 787               prev->next = cur ? cur : next;
 788             else
 789               info->val = cur ? cur : next;
 790             if (cur)
 791               cur->next = next;
 792             break;
 793           }
 794       if (!found)
 795         {
 796           /* Could not find it, add it */
 797           if (prev)
 798             prev->next = copy_widget_value_tree (new_val, STRUCTURAL_CHANGE);
 799           else
 800             info->val = copy_widget_value_tree (new_val, STRUCTURAL_CHANGE);
 801           change_p = 1;
 802         }
 803       new_val->next = next_new_val;
 804     }
 805
 806   update_all_widget_values (info, deep_p);
 807   return change_p;
 808 }
 809
 810 \f
 811 /* creating the widgets */
 812
 813 static void
 814 initialize_widget_instance (instance)
 815      widget_instance* instance;
 816 {
 817   widget_value* val;
 818
 819   for (val = instance->info->val; val; val = val->next)
 820     val->change = STRUCTURAL_CHANGE;
 821
 822   update_one_widget_instance (instance, True);
 823
 824   for (val = instance->info->val; val; val = val->next)
 825     val->change = NO_CHANGE;
 826 }
 827
 828
 829 static widget_creation_function
 830 find_in_table (type, table)
 831      char* type;
 832      widget_creation_entry* table;
 833 {
 834   widget_creation_entry* cur;
 835   for (cur = table; cur->type; cur++)
 836     if (!my_strcasecmp (type, cur->type))
 837       return cur->function;
 838   return NULL;
 839 }
 840
 841 static Boolean
 842 dialog_spec_p (name)
 843      char* name;
 844 {
 845   /* return True if name matches [EILPQeilpq][1-9][Bb] or
 846      [EILPQeilpq][1-9][Bb][Rr][1-9] */
 847   if (!name)
 848     return False;
 849
 850   switch (name [0])
 851     {
 852     case 'E': case 'I': case 'L': case 'P': case 'Q':
 853     case 'e': case 'i': case 'l': case 'p': case 'q':
 854       if (name [1] >= '0' && name [1] <= '9')
 855         {
 856           if (name [2] != 'B' && name [2] != 'b')
 857             return False;
 858           if (!name [3])
 859             return True;
 860           if ((name [3] == 'T' || name [3] == 't') && !name [4])
 861             return True;
 862           if ((name [3] == 'R' || name [3] == 'r')
 863               && name [4] >= '0' && name [4] <= '9' && !name [5])
 864             return True;
 865           return False;
 866         }
 867       else
 868         return False;
 869
 870     default:
 871       return False;
 872     }
 873 }
 874
 875 static void
 876 instantiate_widget_instance (instance)
 877      widget_instance* instance;
 878 {
 879   widget_creation_function function = NULL;
 880
 881 #if defined (USE_LUCID)
 882   if (!function)
 883     function = find_in_table (instance->info->type, xlw_creation_table);
 884 #endif
 885 #if defined(USE_MOTIF)
 886   if (!function)
 887     function = find_in_table (instance->info->type, xm_creation_table);
 888 #endif
 889 #if defined (USE_XAW)
 890   if (!function)
 891     function = find_in_table (instance->info->type, xaw_creation_table);
 892 #endif
 893
 894   if (!function)
 895     {
 896       if (dialog_spec_p (instance->info->type))
 897         {
 898 #if defined (USE_LUCID)
 899           /* not yet */
 900 #endif
 901 #if defined(USE_MOTIF)
 902           if (!function)
 903             function = xm_create_dialog;
 904 #endif
 905 #if defined (USE_XAW)
 906           if (!function)
 907             function = xaw_create_dialog;
 908 #endif
 909         }
 910     }
 911
 912   if (!function)
 913     {
 914       printf ("No creation function for widget type %s\n",
 915               instance->info->type);
 916       abort ();
 917     }
 918
 919   instance->widget = (*function) (instance);
 920
 921   if (!instance->widget)
 922     abort ();
 923
 924   /*   XtRealizeWidget (instance->widget);*/
 925 }
 926
 927 void
 928 lw_register_widget (type, name, id, val, pre_activate_cb,
 929                     selection_cb, post_activate_cb, highlight_cb)
 930      char* type;
 931      char* name;
 932      LWLIB_ID id;
 933      widget_value* val;
 934      lw_callback pre_activate_cb;
 935      lw_callback selection_cb;
 936      lw_callback post_activate_cb;
 937      lw_callback highlight_cb;
 938 {
 939   if (!get_widget_info (id, False))
 940     allocate_widget_info (type, name, id, val, pre_activate_cb, selection_cb,
 941                           post_activate_cb, highlight_cb);
 942 }
 943
 944 Widget
 945 #ifdef PROTOTYPES
 946 lw_get_widget (LWLIB_ID id, Widget parent, Boolean pop_up_p)
 947 #else
 948 lw_get_widget (id, parent, pop_up_p)
 949      LWLIB_ID id;
 950      Widget parent;
 951      Boolean pop_up_p;
 952 #endif
 953 {
 954   widget_instance* instance;
 955
 956   instance = find_instance (id, parent, pop_up_p);
 957   return instance ? instance->widget : NULL;
 958 }
 959
 960 Widget
 961 #ifdef PROTOTYPES
 962 lw_make_widget (LWLIB_ID id, Widget parent, Boolean pop_up_p)
 963 #else
 964 lw_make_widget (id, parent, pop_up_p)
 965      LWLIB_ID id;
 966      Widget parent;
 967      Boolean pop_up_p;
 968 #endif
 969 {
 970   widget_instance* instance;
 971   widget_info* info;
 972
 973   instance = find_instance (id, parent, pop_up_p);
 974   if (!instance)
 975     {
 976       info = get_widget_info (id, False);
 977       if (!info)
 978         return NULL;
 979       instance = allocate_widget_instance (info, parent, pop_up_p);
 980       initialize_widget_instance (instance);
 981     }
 982   if (!instance->widget)
 983     abort ();
 984   return instance->widget;
 985 }
 986
 987 Widget
 988 #ifdef PROTOTYPES
 989 lw_create_widget (char* type, char* name, LWLIB_ID id, widget_value* val,
 990                   Widget parent, Boolean pop_up_p,
 991                   lw_callback pre_activate_cb, lw_callback selection_cb,
 992                   lw_callback post_activate_cb, lw_callback highlight_cb)
 993 #else
 994 lw_create_widget (type, name, id, val, parent, pop_up_p, pre_activate_cb,
 995                   selection_cb, post_activate_cb, highlight_cb)
 996      char* type;
 997      char* name;
 998      LWLIB_ID id;
 999      widget_value* val;
1000      Widget parent;
1001      Boolean pop_up_p;
1002      lw_callback pre_activate_cb;
1003      lw_callback selection_cb;
1004      lw_callback post_activate_cb;
1005      lw_callback highlight_cb;
1006 #endif
1007 {
1008   lw_register_widget (type, name, id, val, pre_activate_cb, selection_cb,
1009                       post_activate_cb, highlight_cb);
1010   return lw_make_widget (id, parent, pop_up_p);
1011 }
1012
1013 \f
1014 /* destroying the widgets */
1015 static void
1016 destroy_one_instance (instance)
1017      widget_instance* instance;
1018 {
1019   /* Remove the destroy callback on the widget; that callback will try to
1020      dereference the instance object (to set its widget slot to 0, since the
1021      widget is dead.)  Since the instance is now dead, we don't have to worry
1022      about the fact that its widget is dead too.
1023
1024      This happens in the Phase2Destroy of the widget, so this callback would
1025      not have been run until arbitrarily long after the instance was freed.
1026    */
1027   if (instance->widget)
1028     XtRemoveCallback (instance->widget, XtNdestroyCallback,
1029                       mark_widget_destroyed, (XtPointer)instance);
1030
1031   if (instance->widget)
1032     {
1033       /* The else are pretty tricky here, including the empty statement
1034          at the end because it would be very bad to destroy a widget
1035          twice. */
1036 #if defined (USE_LUCID)
1037       if (lw_lucid_widget_p (instance->widget))
1038         xlw_destroy_instance (instance);
1039       else
1040 #endif
1041 #if defined (USE_MOTIF)
1042       if (lw_motif_widget_p (instance->widget))
1043         xm_destroy_instance (instance);
1044       else
1045 #endif
1046 #if defined (USE_XAW)
1047       if (lw_xaw_widget_p (instance->widget))
1048         xaw_destroy_instance (instance);
1049       else
1050 #endif
1051         /* do not remove the empty statement */
1052         ;
1053     }
1054
1055   free_widget_instance (instance);
1056 }
1057
1058 void
1059 lw_destroy_widget (w)
1060      Widget w;
1061 {
1062   widget_instance* instance = get_widget_instance (w, True);
1063
1064   if (instance)
1065     {
1066       widget_info *info = instance->info;
1067       /* instance has already been removed from the list; free it */
1068       destroy_one_instance (instance);
1069       /* if there are no instances left, free the info too */
1070       if (!info->instances)
1071         lw_destroy_all_widgets (info->id);
1072     }
1073 }
1074
1075 void
1076 lw_destroy_all_widgets (id)
1077      LWLIB_ID id;
1078 {
1079   widget_info* info = get_widget_info (id, True);
1080   widget_instance* instance;
1081   widget_instance* next;
1082
1083   if (info)
1084     {
1085       for (instance = info->instances; instance; )
1086         {
1087           next = instance->next;
1088           destroy_one_instance (instance);
1089           instance = next;
1090         }
1091       free_widget_info (info);
1092     }
1093 }
1094
1095 void
1096 lw_destroy_everything ()
1097 {
1098   while (all_widget_info)
1099     lw_destroy_all_widgets (all_widget_info->id);
1100 }
1101
1102 void
1103 lw_destroy_all_pop_ups ()
1104 {
1105   widget_info* info;
1106   widget_info* next;
1107   widget_instance* instance;
1108
1109   for (info = all_widget_info; info; info = next)
1110     {
1111       next = info->next;
1112       instance = info->instances;
1113       if (instance && instance->pop_up_p)
1114         lw_destroy_all_widgets (info->id);
1115     }
1116 }
1117
1118 #ifdef USE_MOTIF
1119 extern Widget first_child (/* Widget */);       /* garbage */
1120 #endif
1121
1122 Widget
1123 lw_raise_all_pop_up_widgets ()
1124 {
1125   widget_info* info;
1126   widget_instance* instance;
1127   Widget result = NULL;
1128
1129   for (info = all_widget_info; info; info = info->next)
1130     for (instance = info->instances; instance; instance = instance->next)
1131       if (instance->pop_up_p)
1132         {
1133           Widget widget = instance->widget;
1134           if (widget)
1135             {
1136               if (XtIsManaged (widget)
1137 #ifdef USE_MOTIF
1138                   /* What a complete load of crap!!!!
1139                      When a dialogShell is on the screen, it is not managed!
1140                    */
1141                   || (lw_motif_widget_p (instance->widget) &&
1142                       XtIsManaged (first_child (widget)))
1143 #endif
1144                   )
1145                 {
1146                   if (!result)
1147                     result = widget;
1148                   XMapRaised (XtDisplay (widget), XtWindow (widget));
1149                 }
1150             }
1151         }
1152   return result;
1153 }
1154
1155 static void
1156 #ifdef PROTOTYPES
1157 lw_pop_all_widgets (LWLIB_ID id, Boolean up)
1158 #else
1159 lw_pop_all_widgets (id, up)
1160      LWLIB_ID id;
1161      Boolean up;
1162 #endif
1163 {
1164   widget_info* info = get_widget_info (id, False);
1165   widget_instance* instance;
1166
1167   if (info)
1168     for (instance = info->instances; instance; instance = instance->next)
1169       if (instance->pop_up_p && instance->widget)
1170         {
1171 #if defined (USE_LUCID)
1172           if (lw_lucid_widget_p (instance->widget))
1173             {
1174               XtRealizeWidget (instance->widget);
1175               xlw_pop_instance (instance, up);
1176             }
1177 #endif
1178 #if defined (USE_MOTIF)
1179           if (lw_motif_widget_p (instance->widget))
1180             {
1181               XtRealizeWidget (instance->widget);
1182               xm_pop_instance (instance, up);
1183             }
1184 #endif
1185 #if defined (USE_XAW)
1186           if (lw_xaw_widget_p (instance->widget))
1187             {
1188               XtRealizeWidget (XtParent (instance->widget));
1189               XtRealizeWidget (instance->widget);
1190               xaw_pop_instance (instance, up);
1191             }
1192 #endif
1193         }
1194 }
1195
1196 void
1197 lw_pop_up_all_widgets (id)
1198      LWLIB_ID id;
1199 {
1200   lw_pop_all_widgets (id, True);
1201 }
1202
1203 void
1204 lw_pop_down_all_widgets (id)
1205      LWLIB_ID id;
1206 {
1207   lw_pop_all_widgets (id, False);
1208 }
1209
1210 void
1211 lw_popup_menu (widget, event)
1212      Widget widget;
1213      XEvent *event;
1214 {
1215 #if defined (USE_LUCID)
1216   if (lw_lucid_widget_p (widget))
1217     xlw_popup_menu (widget, event);
1218 #endif
1219 #if defined (USE_MOTIF)
1220   if (lw_motif_widget_p (widget))
1221     xm_popup_menu (widget, event);
1222 #endif
1223 #if defined (USE_XAW)
1224   if (lw_xaw_widget_p (widget))
1225     xaw_popup_menu (widget, event);
1226 #endif
1227 }
1228
1229 \f/* get the values back */
1230 static Boolean
1231 get_one_value (instance, val)
1232      widget_instance* instance;
1233      widget_value* val;
1234 {
1235   Widget widget = name_to_widget (instance, val->name);
1236
1237   if (widget)
1238     {
1239 #if defined (USE_LUCID)
1240       if (lw_lucid_widget_p (instance->widget))
1241         xlw_update_one_value (instance, widget, val);
1242 #endif
1243 #if defined (USE_MOTIF)
1244       if (lw_motif_widget_p (instance->widget))
1245         xm_update_one_value (instance, widget, val);
1246 #endif
1247 #if defined (USE_XAW)
1248       if (lw_xaw_widget_p (instance->widget))
1249         xaw_update_one_value (instance, widget, val);
1250 #endif
1251       return True;
1252     }
1253   else
1254     return False;
1255 }
1256
1257 Boolean
1258 lw_get_some_values (id, val_out)
1259      LWLIB_ID id;
1260      widget_value* val_out;
1261 {
1262   widget_info* info = get_widget_info (id, False);
1263   widget_instance* instance;
1264   widget_value* val;
1265   Boolean result = False;
1266
1267   if (!info)
1268     return False;
1269
1270   instance = info->instances;
1271   if (!instance)
1272     return False;
1273
1274   for (val = val_out; val; val = val->next)
1275     if (get_one_value (instance, val))
1276       result = True;
1277
1278   return result;
1279 }
1280
1281 widget_value*
1282 lw_get_all_values (id)
1283      LWLIB_ID id;
1284 {
1285   widget_info* info = get_widget_info (id, False);
1286   widget_value* val = info->val;
1287   if (lw_get_some_values (id, val))
1288     return val;
1289   else
1290     return NULL;
1291 }
1292
1293 /* internal function used by the library dependent implementation to get the
1294    widget_value for a given widget in an instance */
1295 widget_value*
1296 lw_get_widget_value_for_widget (instance, w)
1297      widget_instance* instance;
1298      Widget w;
1299 {
1300   char* name = XtName (w);
1301   widget_value* cur;
1302   for (cur = instance->info->val; cur; cur = cur->next)
1303     if (!strcmp (cur->name, name))
1304       return cur;
1305   return NULL;
1306 }
1307
1308 \f/* update other instances value when one thing changed */
1309
1310 /* To forbid recursive calls */
1311 static Boolean lwlib_updating;
1312
1313 /* This function can be used as a an XtCallback for the widgets that get
1314   modified to update other instances of the widgets.  Closure should be the
1315   widget_instance. */
1316 void
1317 lw_internal_update_other_instances (widget, closure, call_data)
1318      Widget widget;
1319      XtPointer closure;
1320      XtPointer call_data;
1321 {
1322   widget_instance* instance = (widget_instance*)closure;
1323   char* name = XtName (widget);
1324   widget_info* info;
1325   widget_instance* cur;
1326   widget_value* val;
1327
1328   /* Avoid possibly infinite recursion.  */
1329   if (lwlib_updating)
1330     return;
1331
1332   /* protect against the widget being destroyed */
1333   if (XtWidgetBeingDestroyedP (widget))
1334     return;
1335
1336   /* Return immediately if there are no other instances */
1337   info = instance->info;
1338   if (!info->instances->next)
1339     return;
1340
1341   lwlib_updating = True;
1342
1343   for (val = info->val; val && strcmp (val->name, name); val = val->next);
1344
1345   if (val && get_one_value (instance, val))
1346     for (cur = info->instances; cur; cur = cur->next)
1347       if (cur != instance)
1348         set_one_value (cur, val, True);
1349
1350   lwlib_updating = False;
1351 }
1352
1353
1354 \f/* get the id */
1355
1356 LWLIB_ID
1357 lw_get_widget_id (w)
1358      Widget w;
1359 {
1360   widget_instance* instance = get_widget_instance (w, False);
1361
1362   return instance ? instance->info->id : 0;
1363 }
1364
1365 \f/* set the keyboard focus */
1366 void
1367 lw_set_keyboard_focus (parent, w)
1368      Widget parent;
1369      Widget w;
1370 {
1371 #if defined (USE_MOTIF)
1372   xm_set_keyboard_focus (parent, w);
1373 #else
1374   XtSetKeyboardFocus (parent, w);
1375 #endif
1376 }
1377
1378 \f/* Show busy */
1379 static void
1380 #ifdef PROTOTYPES
1381 show_one_widget_busy (Widget w, Boolean flag)
1382 #else
1383 show_one_widget_busy (w, flag)
1384      Widget w;
1385      Boolean flag;
1386 #endif
1387 {
1388   Pixel foreground = 0;
1389   Pixel background = 1;
1390   Widget widget_to_invert = XtNameToWidget (w, "*sheet");
1391   if (!widget_to_invert)
1392     widget_to_invert = w;
1393
1394   XtVaGetValues (widget_to_invert,
1395                  XtNforeground, &foreground,
1396                  XtNbackground, &background,
1397                  NULL);
1398   XtVaSetValues (widget_to_invert,
1399                  XtNforeground, background,
1400                  XtNbackground, foreground,
1401                  NULL);
1402 }
1403
1404 void
1405 #ifdef PROTOTYPES
1406 lw_show_busy (Widget w, Boolean busy)
1407 #else
1408 lw_show_busy (w, busy)
1409      Widget w;
1410      Boolean busy;
1411 #endif
1412 {
1413   widget_instance* instance = get_widget_instance (w, False);
1414   widget_info* info;
1415   widget_instance* next;
1416
1417   if (instance)
1418     {
1419       info = instance->info;
1420       if (info->busy != busy)
1421         {
1422           for (next = info->instances; next; next = next->next)
1423             if (next->widget)
1424               show_one_widget_busy (next->widget, busy);
1425           info->busy = busy;
1426         }
1427     }
1428 }
1429
1430 /* This hack exists because Lucid/Athena need to execute the strange
1431    function below to support geometry management. */
1432 void
1433 #ifdef PROTOTYPES
1434 lw_refigure_widget (Widget w, Boolean doit)
1435 #else
1436 lw_refigure_widget (w, doit)
1437      Widget w;
1438      Boolean doit;
1439 #endif
1440 {
1441 #if defined (USE_XAW)
1442   XawPanedSetRefigureMode (w, doit);
1443 #endif
1444 #if defined (USE_MOTIF)
1445   if (doit)
1446     XtManageChild (w);
1447   else
1448     XtUnmanageChild (w);
1449 #endif
1450 }
1451
1452 /* Toolkit independent way of determining if an event window is in the
1453    menubar. */
1454 Boolean
1455 lw_window_is_in_menubar (win, menubar_widget)
1456      Window win;
1457      Widget menubar_widget;
1458 {
1459   return menubar_widget
1460 #if defined (USE_LUCID)
1461       && XtWindow (menubar_widget) == win;
1462 #endif
1463 #if defined (USE_MOTIF)
1464       && ((XtWindow (menubar_widget) == win)
1465           || (XtWindowToWidget (XtDisplay (menubar_widget), win)
1466               && (XtParent (XtWindowToWidget (XtDisplay (menubar_widget), win))
1467                   == menubar_widget)));
1468 #endif
1469 }
1470
1471 /* Motif hack to set the main window areas. */
1472 void
1473 lw_set_main_areas (parent, menubar, work_area)
1474      Widget parent;
1475      Widget menubar;
1476      Widget work_area;
1477 {
1478 #if defined (USE_MOTIF)
1479   xm_set_main_areas (parent, menubar, work_area);
1480 #endif
1481 }
1482
1483 /* Manage resizing for Motif.  This disables resizing when the menubar
1484    is about to be modified. */
1485 void
1486 #ifdef PROTOTYPES
1487 lw_allow_resizing (Widget w, Boolean flag)
1488 #else
1489 lw_allow_resizing (w, flag)
1490      Widget w;
1491      Boolean flag;
1492 #endif
1493 {
1494 #if defined (USE_MOTIF)
1495   xm_manage_resizing (w, flag);
1496 #endif
1497 }
1498
1499
1500 /* Value is non-zero if LABEL is a menu separator.  If it is, *TYPE is
1501    set to an appropriate enumerator of type enum menu_separator.
1502    MOTIF_P non-zero means map separator types not supported by Motif
1503    to similar ones that are supported.  */
1504
1505 int
1506 lw_separator_p (label, type, motif_p)
1507      char *label;
1508      enum menu_separator *type;
1509      int motif_p;
1510 {
1511   int separator_p = 0;
1512
1513   if (strlen (label) >= 3
1514       && bcmp (label, "--:", 3) == 0)
1515     {
1516       static struct separator_table
1517       {
1518         char *name;
1519         enum menu_separator type;
1520       }
1521       separator_names[] =
1522       {
1523         {"space",                     SEPARATOR_NO_LINE},
1524         {"noLine",                    SEPARATOR_NO_LINE},
1525         {"singleLine",                SEPARATOR_SINGLE_LINE},
1526         {"doubleLine",                SEPARATOR_DOUBLE_LINE},
1527         {"singleDashedLine",          SEPARATOR_SINGLE_DASHED_LINE},
1528         {"doubleDashedLine",          SEPARATOR_DOUBLE_DASHED_LINE},
1529         {"shadowEtchedIn",            SEPARATOR_SHADOW_ETCHED_IN},
1530         {"shadowEtchedOut",           SEPARATOR_SHADOW_ETCHED_OUT},
1531         {"shadowEtchedInDash",        SEPARATOR_SHADOW_ETCHED_IN_DASH},
1532         {"shadowEtchedOutDash",       SEPARATOR_SHADOW_ETCHED_OUT_DASH},
1533         {"shadowDoubleEtchedIn",      SEPARATOR_SHADOW_DOUBLE_ETCHED_IN},
1534         {"shadowDoubleEtchedOut",     SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT},
1535         {"shadowDoubleEtchedInDash",  SEPARATOR_SHADOW_DOUBLE_ETCHED_IN_DASH},
1536         {"shadowDoubleEtchedOutDash", SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT_DASH},
1537         {0,0}
1538       };
1539
1540       int i;
1541
1542       label += 3;
1543       for (i = 0; separator_names[i].name; ++i)
1544         if (strcmp (label, separator_names[i].name) == 0)
1545           {
1546             separator_p = 1;
1547             *type = separator_names[i].type;
1548
1549             /* If separator type is not supported under Motif,
1550                use a similar one.  */
1551             if (motif_p && *type >= SEPARATOR_SHADOW_DOUBLE_ETCHED_IN)
1552               *type -= 4;
1553             break;
1554           }
1555     }
1556   else if (strlen (label) > 3
1557            && bcmp (label, "--", 2) == 0
1558            && label[2] != '-')
1559     {
1560       /* Alternative, more Emacs-style names.  */
1561       static struct separator_table
1562       {
1563         char *name;
1564         enum menu_separator type;
1565       }
1566       separator_names[] =
1567       {
1568         {"space",                        SEPARATOR_NO_LINE},
1569         {"no-line",                      SEPARATOR_NO_LINE},
1570         {"single-line",                  SEPARATOR_SINGLE_LINE},
1571         {"double-line",                  SEPARATOR_DOUBLE_LINE},
1572         {"single-dashed-line",           SEPARATOR_SINGLE_DASHED_LINE},
1573         {"double-dashed-line",           SEPARATOR_DOUBLE_DASHED_LINE},
1574         {"shadow-etched-in",             SEPARATOR_SHADOW_ETCHED_IN},
1575         {"shadow-etched-out",            SEPARATOR_SHADOW_ETCHED_OUT},
1576         {"shadow-etched-in-dash",        SEPARATOR_SHADOW_ETCHED_IN_DASH},
1577         {"shadow-etched-out-dash",       SEPARATOR_SHADOW_ETCHED_OUT_DASH},
1578         {"shadow-double-etched-in",      SEPARATOR_SHADOW_DOUBLE_ETCHED_IN},
1579         {"shadow-double-etched-out",     SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT},
1580         {"shadow-double-etched-in-dash", SEPARATOR_SHADOW_DOUBLE_ETCHED_IN_DASH},
1581         {"shadow-double-etched-out-dash",SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT_DASH},
1582         {0,0}
1583       };
1584
1585       int i;
1586
1587       label += 2;
1588       for (i = 0; separator_names[i].name; ++i)
1589         if (strcmp (label, separator_names[i].name) == 0)
1590           {
1591             separator_p = 1;
1592             *type = separator_names[i].type;
1593
1594             /* If separator type is not supported under Motif,
1595                use a similar one.  */
1596             if (motif_p && *type >= SEPARATOR_SHADOW_DOUBLE_ETCHED_IN)
1597               *type -= 4;
1598             break;
1599           }
1600     }
1601   else
1602     {
1603       /* Old-style separator, maybe.  It's a separator if it contains
1604          only dashes.  */
1605       while (*label == '-')
1606         ++label;
1607       separator_p = *label == 0;
1608       *type = SEPARATOR_SHADOW_ETCHED_IN;
1609     }
1610
1611   return separator_p;
1612 }
1613