Pileus Git - ~andy/gtk/blob - gtk/gtkbindings.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * GtkBindingSet: Keybinding manager for GtkObjects.
   5  * Copyright (C) 1998 Tim Janik
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the
  19  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20  * Boston, MA 02111-1307, USA.
  21  */
  22
  23 /*
  24  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  25  * file for a list of people on the GTK+ Team.  See the ChangeLog
  26  * files for a list of changes.  These files are distributed with
  27  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  28  */
  29
  30 #include <string.h>
  31 #include <stdarg.h>
  32 #include <gdkkeysyms.h>
  33 #include "gtkbindings.h"
  34 #include "gtkkeyhash.h"
  35 #include "gtksignal.h"
  36 #include "gtkwidget.h"
  37 #include "gtkrc.h"
  38
  39
  40 /* --- defines --- */
  41 #define BINDING_MOD_MASK()      (gtk_accelerator_get_default_mod_mask () | GDK_RELEASE_MASK)
  42
  43
  44 /* --- structures --- */
  45 typedef struct {
  46   GPatternSpec *pspec;
  47   gpointer user_data;
  48   guint seq_id;
  49 } PatternSpec;
  50
  51
  52 /* --- variables --- */
  53 static GHashTable       *binding_entry_hash_table = NULL;
  54 static GSList           *binding_key_hashes = NULL;
  55 static GSList           *binding_set_list = NULL;
  56 static const gchar      *key_class_binding_set = "gtk-class-binding-set";
  57 static GQuark            key_id_class_binding_set = 0;
  58
  59
  60 /* --- functions --- */
  61 static GtkBindingSignal*
  62 binding_signal_new (const gchar *signal_name,
  63                     guint        n_args)
  64 {
  65   GtkBindingSignal *signal;
  66
  67   signal = g_new (GtkBindingSignal, 1);
  68   signal->next = NULL;
  69   signal->signal_name = g_strdup (signal_name);
  70   signal->n_args = n_args;
  71   signal->args = g_new0 (GtkBindingArg, n_args);
  72
  73   return signal;
  74 }
  75
  76 static void
  77 binding_signal_free (GtkBindingSignal *sig)
  78 {
  79   guint i;
  80
  81   for (i = 0; i < sig->n_args; i++)
  82     {
  83       if (GTK_FUNDAMENTAL_TYPE (sig->args[i].arg_type) == GTK_TYPE_STRING)
  84         g_free (sig->args[i].d.string_data);
  85     }
  86   g_free (sig->args);
  87   g_free (sig->signal_name);
  88   g_free (sig);
  89 }
  90
  91 static guint
  92 binding_entry_hash (gconstpointer  key)
  93 {
  94   register const GtkBindingEntry *e = key;
  95   register guint h;
  96
  97   h = e->keyval;
  98   h ^= e->modifiers;
  99
 100   return h;
 101 }
 102
 103 static gint
 104 binding_entries_compare (gconstpointer  a,
 105                          gconstpointer  b)
 106 {
 107   register const GtkBindingEntry *ea = a;
 108   register const GtkBindingEntry *eb = b;
 109
 110   return (ea->keyval == eb->keyval && ea->modifiers == eb->modifiers);
 111 }
 112
 113 static void
 114 binding_key_hash_insert_entry (GtkKeyHash      *key_hash,
 115                                GtkBindingEntry *entry)
 116 {
 117   guint keyval = entry->keyval;
 118
 119   /* We store lowercased accelerators. To deal with this, if <Shift>
 120    * was specified, uppercase.
 121    */
 122   if (entry->modifiers & GDK_SHIFT_MASK)
 123     {
 124       if (keyval == GDK_Tab)
 125         keyval = GDK_ISO_Left_Tab;
 126       else
 127         keyval = gdk_keyval_to_upper (keyval);
 128     }
 129
 130   _gtk_key_hash_add_entry (key_hash, keyval, entry->modifiers & ~GDK_RELEASE_MASK, entry);
 131 }
 132
 133 static void
 134 binding_key_hash_destroy (gpointer data)
 135 {
 136   GtkKeyHash *key_hash = data;
 137
 138   binding_key_hashes = g_slist_remove (binding_key_hashes, key_hash);
 139   _gtk_key_hash_free (key_hash);
 140 }
 141
 142 static void
 143 insert_entries_into_key_hash (gpointer key,
 144                               gpointer value,
 145                               gpointer data)
 146 {
 147   GtkKeyHash *key_hash = data;
 148   GtkBindingEntry *entry = value;
 149
 150   for (; entry; entry = entry->hash_next)
 151     binding_key_hash_insert_entry (key_hash, entry);
 152 }
 153
 154 static GtkKeyHash *
 155 binding_key_hash_for_keymap (GdkKeymap *keymap)
 156 {
 157   static GQuark key_hash_quark = 0;
 158   GtkKeyHash *key_hash;
 159
 160   if (!key_hash_quark)
 161     key_hash_quark = g_quark_from_static_string ("gtk-binding-key-hash");
 162
 163   key_hash = g_object_get_qdata (G_OBJECT (keymap), key_hash_quark);
 164
 165   if (!key_hash)
 166     {
 167       key_hash = _gtk_key_hash_new (keymap, NULL);
 168       g_object_set_qdata_full (G_OBJECT (keymap), key_hash_quark, key_hash, binding_key_hash_destroy);
 169
 170       if (binding_entry_hash_table)
 171         g_hash_table_foreach (binding_entry_hash_table,
 172                               insert_entries_into_key_hash,
 173                               key_hash);
 174
 175       binding_key_hashes = g_slist_prepend (binding_key_hashes, key_hash);
 176     }
 177
 178   return key_hash;
 179 }
 180
 181
 182 static GtkBindingEntry*
 183 binding_entry_new (GtkBindingSet  *binding_set,
 184                    guint           keyval,
 185                    GdkModifierType modifiers)
 186 {
 187   GSList *tmp_list;
 188   GtkBindingEntry *entry;
 189
 190   if (!binding_entry_hash_table)
 191     binding_entry_hash_table = g_hash_table_new (binding_entry_hash, binding_entries_compare);
 192
 193   entry = g_new (GtkBindingEntry, 1);
 194   entry->keyval = keyval;
 195   entry->modifiers = modifiers;
 196   entry->binding_set = binding_set,
 197   entry->destroyed = FALSE;
 198   entry->in_emission = FALSE;
 199   entry->signals = NULL;
 200
 201   entry->set_next = binding_set->entries;
 202   binding_set->entries = entry;
 203
 204   entry->hash_next = g_hash_table_lookup (binding_entry_hash_table, entry);
 205   if (entry->hash_next)
 206     g_hash_table_remove (binding_entry_hash_table, entry->hash_next);
 207   g_hash_table_insert (binding_entry_hash_table, entry, entry);
 208
 209   for (tmp_list = binding_key_hashes; tmp_list; tmp_list = tmp_list->next)
 210     {
 211       GtkKeyHash *key_hash = tmp_list->data;
 212       binding_key_hash_insert_entry (key_hash, entry);
 213     }
 214
 215   return entry;
 216 }
 217
 218 static void
 219 binding_entry_free (GtkBindingEntry *entry)
 220 {
 221   GtkBindingSignal *sig;
 222
 223   g_assert (entry->set_next == NULL &&
 224             entry->hash_next == NULL &&
 225             entry->in_emission == FALSE &&
 226             entry->destroyed == TRUE);
 227
 228   entry->destroyed = FALSE;
 229
 230   sig = entry->signals;
 231   while (sig)
 232     {
 233       GtkBindingSignal *prev;
 234
 235       prev = sig;
 236       sig = prev->next;
 237       binding_signal_free (prev);
 238     }
 239   g_free (entry);
 240 }
 241
 242 static void
 243 binding_entry_destroy (GtkBindingEntry *entry)
 244 {
 245   GtkBindingEntry *o_entry;
 246   register GtkBindingEntry *tmp;
 247   GtkBindingEntry *begin;
 248   register GtkBindingEntry *last;
 249   GSList *tmp_list;
 250
 251   /* unlink from binding set
 252    */
 253   last = NULL;
 254   tmp = entry->binding_set->entries;
 255   while (tmp)
 256     {
 257       if (tmp == entry)
 258         {
 259           if (last)
 260             last->set_next = entry->set_next;
 261           else
 262             entry->binding_set->entries = entry->set_next;
 263           break;
 264         }
 265       last = tmp;
 266       tmp = last->set_next;
 267     }
 268   entry->set_next = NULL;
 269
 270   o_entry = g_hash_table_lookup (binding_entry_hash_table, entry);
 271   begin = o_entry;
 272   last = NULL;
 273   tmp = begin;
 274   while (tmp)
 275     {
 276       if (tmp == entry)
 277         {
 278           if (last)
 279             last->hash_next = entry->hash_next;
 280           else
 281             begin = entry->hash_next;
 282           break;
 283         }
 284       last = tmp;
 285       tmp = last->hash_next;
 286     }
 287   entry->hash_next = NULL;
 288
 289   if (!begin)
 290     g_hash_table_remove (binding_entry_hash_table, entry);
 291   else if (begin != o_entry)
 292     {
 293       g_hash_table_remove (binding_entry_hash_table, entry);
 294       g_hash_table_insert (binding_entry_hash_table, begin, begin);
 295     }
 296
 297   for (tmp_list = binding_key_hashes; tmp_list; tmp_list = tmp_list->next)
 298     {
 299       GtkKeyHash *key_hash = tmp_list->data;
 300       _gtk_key_hash_remove_entry (key_hash, entry);
 301     }
 302
 303   entry->destroyed = TRUE;
 304
 305   if (!entry->in_emission)
 306     binding_entry_free (entry);
 307 }
 308
 309 static GtkBindingEntry*
 310 binding_ht_lookup_entry (GtkBindingSet  *set,
 311                          guint           keyval,
 312                          GdkModifierType modifiers)
 313 {
 314   GtkBindingEntry lookup_entry = { 0 };
 315   GtkBindingEntry *entry;
 316
 317   if (!binding_entry_hash_table)
 318     return NULL;
 319
 320   lookup_entry.keyval = keyval;
 321   lookup_entry.modifiers = modifiers;
 322
 323   entry = g_hash_table_lookup (binding_entry_hash_table, &lookup_entry);
 324   for (; entry; entry = entry->hash_next)
 325     if (entry->binding_set == set)
 326       return entry;
 327
 328   return NULL;
 329 }
 330
 331 static gboolean
 332 binding_compose_params (GtkObject       *object,
 333                         GtkBindingArg   *args,
 334                         GSignalQuery    *query,
 335                         GValue         **params_p)
 336 {
 337   GValue *params;
 338   const GType *types;
 339   guint i;
 340   gboolean valid;
 341
 342   params = g_new0 (GValue, query->n_params + 1);
 343   *params_p = params;
 344
 345   /* The instance we emit on is the first object in the array
 346    */
 347   g_value_init (params, G_TYPE_OBJECT);
 348   g_value_set_object (params, G_OBJECT (object));
 349   params++;
 350
 351   types = query->param_types;
 352   valid = TRUE;
 353   for (i = 1; i < query->n_params + 1 && valid; i++)
 354     {
 355       GValue tmp_value = { 0, };
 356
 357       g_value_init (params, *types);
 358
 359       switch (G_TYPE_FUNDAMENTAL (args->arg_type))
 360         {
 361         case G_TYPE_DOUBLE:
 362           g_value_init (&tmp_value, G_TYPE_DOUBLE);
 363           g_value_set_double (&tmp_value, args->d.double_data);
 364           break;
 365         case  G_TYPE_LONG:
 366           g_value_init (&tmp_value, G_TYPE_LONG);
 367           g_value_set_long (&tmp_value, args->d.long_data);
 368           break;
 369         case  G_TYPE_STRING:
 370           /* gtk_rc_parse_flags/enum() has fancier parsing for this; we can't call
 371            * that since we don't have a GParamSpec, so just do something simple
 372            */
 373           if (G_TYPE_FUNDAMENTAL (*types) == G_TYPE_ENUM)
 374             {
 375               GEnumClass *class = G_ENUM_CLASS (g_type_class_ref (*types));
 376
 377               valid = FALSE;
 378
 379               if (args->arg_type == GTK_TYPE_IDENTIFIER)
 380                 {
 381                   GEnumValue *enum_value = NULL;
 382                   enum_value = g_enum_get_value_by_name (class, args->d.string_data);
 383                   if (!enum_value)
 384                     enum_value = g_enum_get_value_by_nick (class, args->d.string_data);
 385                   if (enum_value)
 386                     {
 387                       g_value_init (&tmp_value, *types);
 388                       g_value_set_enum (&tmp_value, enum_value->value);
 389                       valid = TRUE;
 390                     }
 391                 }
 392
 393               g_type_class_unref (class);
 394             }
 395           /* This is just a hack for compatibility with GTK+-1.2 where a string
 396            * could be used for a single flag value / without the support for multiple
 397            * values in gtk_rc_parse_flags(), this isn't very useful.
 398            */
 399           else if (G_TYPE_FUNDAMENTAL (*types) == G_TYPE_FLAGS)
 400             {
 401               GFlagsClass *class = G_FLAGS_CLASS (g_type_class_ref (*types));
 402
 403               valid = FALSE;
 404
 405               if (args->arg_type == GTK_TYPE_IDENTIFIER)
 406                 {
 407                   GFlagsValue *flags_value = NULL;
 408                   flags_value = g_flags_get_value_by_name (class, args->d.string_data);
 409                   if (!flags_value)
 410                     flags_value = g_flags_get_value_by_nick (class, args->d.string_data);
 411                   if (flags_value)
 412                     {
 413                       g_value_init (&tmp_value, *types);
 414                       g_value_set_flags (&tmp_value, flags_value->value);
 415                       valid = TRUE;
 416                     }
 417                 }
 418
 419               g_type_class_unref (class);
 420             }
 421           else
 422             {
 423               g_value_init (&tmp_value, G_TYPE_STRING);
 424               g_value_set_static_string (&tmp_value, args->d.string_data);
 425             }
 426           break;
 427         default:
 428           valid = FALSE;
 429           break;
 430         }
 431
 432       if (valid)
 433         {
 434           if (!g_value_transform (&tmp_value, params))
 435             valid = FALSE;
 436
 437           g_value_unset (&tmp_value);
 438         }
 439
 440       types++;
 441       params++;
 442       args++;
 443     }
 444
 445   if (!valid)
 446     {
 447       guint j;
 448
 449       for (j = 0; j < i; j++)
 450         g_value_unset (&(*params_p)[j]);
 451
 452       g_free (*params_p);
 453       *params_p = NULL;
 454     }
 455
 456   return valid;
 457 }
 458
 459 static gboolean
 460 gtk_binding_entry_activate (GtkBindingEntry *entry,
 461                             GtkObject       *object)
 462 {
 463   GtkBindingSignal *sig;
 464   gboolean old_emission;
 465   gboolean handled = FALSE;
 466   gint i;
 467
 468   old_emission = entry->in_emission;
 469   entry->in_emission = TRUE;
 470
 471   g_object_ref (object);
 472
 473   for (sig = entry->signals; sig; sig = sig->next)
 474     {
 475       GSignalQuery query;
 476       guint signal_id;
 477       GValue *params = NULL;
 478       GValue return_val = { 0, };
 479       gchar *accelerator = NULL;
 480
 481       signal_id = g_signal_lookup (sig->signal_name, G_OBJECT_TYPE (object));
 482       if (!signal_id)
 483         {
 484           accelerator = gtk_accelerator_name (entry->keyval, entry->modifiers);
 485           g_warning ("gtk_binding_entry_activate(): binding \"%s::%s\": "
 486                      "could not find signal \"%s\" in the `%s' class ancestry",
 487                      entry->binding_set->set_name,
 488                      accelerator,
 489                      sig->signal_name,
 490                      g_type_name (G_OBJECT_TYPE (object)));
 491           g_free (accelerator);
 492           continue;
 493         }
 494
 495       g_signal_query (signal_id, &query);
 496       if (query.n_params != sig->n_args ||
 497           (query.return_type != G_TYPE_NONE && query.return_type != G_TYPE_BOOLEAN) ||
 498           !binding_compose_params (object, sig->args, &query, &params))
 499         {
 500           accelerator = gtk_accelerator_name (entry->keyval, entry->modifiers);
 501           g_warning ("gtk_binding_entry_activate(): binding \"%s::%s\": "
 502                      "signature mismatch for signal \"%s\" in the `%s' class ancestry",
 503                      entry->binding_set->set_name,
 504                      accelerator,
 505                      sig->signal_name,
 506                      g_type_name (G_OBJECT_TYPE (object)));
 507         }
 508       else if (!(query.signal_flags & GTK_RUN_ACTION))
 509         {
 510           accelerator = gtk_accelerator_name (entry->keyval, entry->modifiers);
 511           g_warning ("gtk_binding_entry_activate(): binding \"%s::%s\": "
 512                      "signal \"%s\" in the `%s' class ancestry cannot be used for action emissions",
 513                      entry->binding_set->set_name,
 514                      accelerator,
 515                      sig->signal_name,
 516                      g_type_name (G_OBJECT_TYPE (object)));
 517         }
 518       g_free (accelerator);
 519       if (accelerator)
 520         continue;
 521
 522       if (query.return_type == G_TYPE_BOOLEAN)
 523         g_value_init (&return_val, G_TYPE_BOOLEAN);
 524
 525       g_signal_emitv (params, signal_id, 0, &return_val);
 526
 527       if (query.return_type == G_TYPE_BOOLEAN)
 528         {
 529           if (g_value_get_boolean (&return_val))
 530             handled = TRUE;
 531           g_value_unset (&return_val);
 532         }
 533       else
 534         handled = TRUE;
 535
 536       for (i = 0; i < query.n_params + 1; i++)
 537         g_value_unset (&params[i]);
 538       g_free (params);
 539
 540       if (entry->destroyed)
 541         break;
 542     }
 543
 544   g_object_unref (object);
 545
 546   entry->in_emission = old_emission;
 547   if (entry->destroyed && !entry->in_emission)
 548     binding_entry_free (entry);
 549
 550   return handled;
 551 }
 552
 553 GtkBindingSet*
 554 gtk_binding_set_new (const gchar    *set_name)
 555 {
 556   GtkBindingSet *binding_set;
 557
 558   g_return_val_if_fail (set_name != NULL, NULL);
 559
 560   binding_set = g_new (GtkBindingSet, 1);
 561   binding_set->set_name = g_strdup (set_name);
 562   binding_set->widget_path_pspecs = NULL;
 563   binding_set->widget_class_pspecs = NULL;
 564   binding_set->class_branch_pspecs = NULL;
 565   binding_set->entries = NULL;
 566   binding_set->current = NULL;
 567
 568   binding_set_list = g_slist_prepend (binding_set_list, binding_set);
 569
 570   return binding_set;
 571 }
 572
 573 GtkBindingSet*
 574 gtk_binding_set_by_class (gpointer object_class)
 575 {
 576   GtkObjectClass *class = object_class;
 577   GtkBindingSet* binding_set;
 578
 579   g_return_val_if_fail (GTK_IS_OBJECT_CLASS (class), NULL);
 580
 581   if (!key_id_class_binding_set)
 582     key_id_class_binding_set = g_quark_from_static_string (key_class_binding_set);
 583
 584   binding_set = g_dataset_id_get_data (class, key_id_class_binding_set);
 585
 586   if (binding_set)
 587     return binding_set;
 588
 589   binding_set = gtk_binding_set_new (gtk_type_name (GTK_CLASS_TYPE (class)));
 590   gtk_binding_set_add_path (binding_set,
 591                             GTK_PATH_CLASS,
 592                             gtk_type_name (GTK_CLASS_TYPE (class)),
 593                             GTK_PATH_PRIO_GTK);
 594   g_dataset_id_set_data (class, key_id_class_binding_set, binding_set);
 595
 596   return binding_set;
 597 }
 598
 599 GtkBindingSet*
 600 gtk_binding_set_find (const gchar    *set_name)
 601 {
 602   GSList *slist;
 603
 604   g_return_val_if_fail (set_name != NULL, NULL);
 605
 606   for (slist = binding_set_list; slist; slist = slist->next)
 607     {
 608       GtkBindingSet *binding_set;
 609
 610       binding_set = slist->data;
 611       if (g_str_equal (binding_set->set_name, (gpointer) set_name))
 612         return binding_set;
 613     }
 614   return NULL;
 615 }
 616
 617 gboolean
 618 gtk_binding_set_activate (GtkBindingSet  *binding_set,
 619                           guint           keyval,
 620                           GdkModifierType modifiers,
 621                           GtkObject      *object)
 622 {
 623   GtkBindingEntry *entry;
 624
 625   g_return_val_if_fail (binding_set != NULL, FALSE);
 626   g_return_val_if_fail (GTK_IS_OBJECT (object), FALSE);
 627
 628   keyval = gdk_keyval_to_lower (keyval);
 629   modifiers = modifiers & BINDING_MOD_MASK ();
 630
 631   entry = binding_ht_lookup_entry (binding_set, keyval, modifiers);
 632   if (entry)
 633     return gtk_binding_entry_activate (entry, object);
 634
 635   return FALSE;
 636 }
 637
 638 void
 639 gtk_binding_entry_clear (GtkBindingSet  *binding_set,
 640                          guint           keyval,
 641                          GdkModifierType modifiers)
 642 {
 643   GtkBindingEntry *entry;
 644
 645   g_return_if_fail (binding_set != NULL);
 646
 647   keyval = gdk_keyval_to_lower (keyval);
 648   modifiers = modifiers & BINDING_MOD_MASK ();
 649
 650   entry = binding_ht_lookup_entry (binding_set, keyval, modifiers);
 651   if (entry)
 652     binding_entry_destroy (entry);
 653
 654   entry = binding_entry_new (binding_set, keyval, modifiers);
 655 }
 656
 657 void
 658 gtk_binding_entry_remove (GtkBindingSet  *binding_set,
 659                           guint           keyval,
 660                           GdkModifierType modifiers)
 661 {
 662   GtkBindingEntry *entry;
 663
 664   g_return_if_fail (binding_set != NULL);
 665
 666   keyval = gdk_keyval_to_lower (keyval);
 667   modifiers = modifiers & BINDING_MOD_MASK ();
 668
 669   entry = binding_ht_lookup_entry (binding_set, keyval, modifiers);
 670   if (entry)
 671     binding_entry_destroy (entry);
 672 }
 673
 674 void
 675 gtk_binding_entry_add_signall (GtkBindingSet  *binding_set,
 676                                guint           keyval,
 677                                GdkModifierType modifiers,
 678                                const gchar    *signal_name,
 679                                GSList         *binding_args)
 680 {
 681   GtkBindingEntry *entry;
 682   GtkBindingSignal *signal, **signal_p;
 683   GSList *slist;
 684   guint n = 0;
 685   GtkBindingArg *arg;
 686
 687   g_return_if_fail (binding_set != NULL);
 688   g_return_if_fail (signal_name != NULL);
 689
 690   keyval = gdk_keyval_to_lower (keyval);
 691   modifiers = modifiers & BINDING_MOD_MASK ();
 692
 693   signal = binding_signal_new (signal_name, g_slist_length (binding_args));
 694
 695   arg = signal->args;
 696   for (slist = binding_args; slist; slist = slist->next)
 697     {
 698       GtkBindingArg *tmp_arg;
 699
 700       tmp_arg = slist->data;
 701       if (!tmp_arg)
 702         {
 703           g_warning ("gtk_binding_entry_add_signall(): arg[%u] is `NULL'", n);
 704           binding_signal_free (signal);
 705           return;
 706         }
 707       switch (GTK_FUNDAMENTAL_TYPE (tmp_arg->arg_type))
 708         {
 709         case  GTK_TYPE_LONG:
 710           arg->arg_type = GTK_TYPE_LONG;
 711           arg->d.long_data = tmp_arg->d.long_data;
 712           break;
 713         case  GTK_TYPE_DOUBLE:
 714           arg->arg_type = GTK_TYPE_DOUBLE;
 715           arg->d.double_data = tmp_arg->d.double_data;
 716           break;
 717         case  GTK_TYPE_STRING:
 718           if (tmp_arg->arg_type != GTK_TYPE_IDENTIFIER)
 719             arg->arg_type = GTK_TYPE_STRING;
 720           else
 721             arg->arg_type = GTK_TYPE_IDENTIFIER;
 722           arg->d.string_data = g_strdup (tmp_arg->d.string_data);
 723           if (!arg->d.string_data)
 724             {
 725               g_warning ("gtk_binding_entry_add_signall(): value of `string' arg[%u] is `NULL'", n);
 726               binding_signal_free (signal);
 727               return;
 728             }
 729           break;
 730         default:
 731           g_warning ("gtk_binding_entry_add_signall(): unsupported type `%s' for arg[%u]",
 732                      gtk_type_name (arg->arg_type), n);
 733           binding_signal_free (signal);
 734           return;
 735         }
 736       arg++;
 737       n++;
 738     }
 739
 740   entry = binding_ht_lookup_entry (binding_set, keyval, modifiers);
 741   if (!entry)
 742     {
 743       gtk_binding_entry_add (binding_set, keyval, modifiers);
 744       entry = binding_ht_lookup_entry (binding_set, keyval, modifiers);
 745     }
 746   signal_p = &entry->signals;
 747   while (*signal_p)
 748     signal_p = &(*signal_p)->next;
 749   *signal_p = signal;
 750 }
 751
 752 void
 753 gtk_binding_entry_add_signal (GtkBindingSet  *binding_set,
 754                               guint           keyval,
 755                               GdkModifierType modifiers,
 756                               const gchar    *signal_name,
 757                               guint           n_args,
 758                               ...)
 759 {
 760   GSList *slist, *free_slist;
 761   va_list args;
 762   guint i;
 763
 764   g_return_if_fail (binding_set != NULL);
 765   g_return_if_fail (signal_name != NULL);
 766
 767   va_start (args, n_args);
 768   slist = NULL;
 769   for (i = 0; i < n_args; i++)
 770     {
 771       GtkBindingArg *arg;
 772
 773       arg = g_new0 (GtkBindingArg, 1);
 774       slist = g_slist_prepend (slist, arg);
 775
 776       arg->arg_type = va_arg (args, GtkType);
 777       switch (GTK_FUNDAMENTAL_TYPE (arg->arg_type))
 778         {
 779           /* for elaborated commenting about var args collection, take a look
 780            * at gtk_arg_collect_value() in gtkargcollector.c
 781            */
 782         case GTK_TYPE_CHAR:
 783         case GTK_TYPE_UCHAR:
 784         case GTK_TYPE_INT:
 785         case GTK_TYPE_UINT:
 786         case GTK_TYPE_BOOL:
 787         case GTK_TYPE_ENUM:
 788         case GTK_TYPE_FLAGS:
 789           arg->arg_type = GTK_TYPE_LONG;
 790           arg->d.long_data = va_arg (args, gint);
 791           break;
 792         case GTK_TYPE_LONG:
 793         case GTK_TYPE_ULONG:
 794           arg->arg_type = GTK_TYPE_LONG;
 795           arg->d.long_data = va_arg (args, glong);
 796           break;
 797         case GTK_TYPE_FLOAT:
 798         case GTK_TYPE_DOUBLE:
 799           arg->arg_type = GTK_TYPE_DOUBLE;
 800           arg->d.double_data = va_arg (args, gdouble);
 801           break;
 802         case GTK_TYPE_STRING:
 803           if (arg->arg_type != GTK_TYPE_IDENTIFIER)
 804             arg->arg_type = GTK_TYPE_STRING;
 805           arg->d.string_data = va_arg (args, gchar*);
 806           if (!arg->d.string_data)
 807             {
 808               g_warning ("gtk_binding_entry_add_signal(): type `%s' arg[%u] is `NULL'",
 809                          gtk_type_name (arg->arg_type),
 810                          i);
 811               i += n_args + 1;
 812             }
 813           break;
 814         default:
 815           g_warning ("gtk_binding_entry_add_signal(): unsupported type `%s' for arg[%u]",
 816                      gtk_type_name (arg->arg_type), i);
 817           i += n_args + 1;
 818           break;
 819         }
 820     }
 821   va_end (args);
 822
 823   if (i == n_args || i == 0)
 824     {
 825       slist = g_slist_reverse (slist);
 826       gtk_binding_entry_add_signall (binding_set, keyval, modifiers, signal_name, slist);
 827     }
 828
 829   free_slist = slist;
 830   while (slist)
 831     {
 832       g_free (slist->data);
 833       slist = slist->next;
 834     }
 835   g_slist_free (free_slist);
 836 }
 837
 838 void
 839 gtk_binding_set_add_path (GtkBindingSet      *binding_set,
 840                           GtkPathType         path_type,
 841                           const gchar        *path_pattern,
 842                           GtkPathPriorityType priority)
 843 {
 844   PatternSpec *pspec;
 845   GSList **slist_p, *slist;
 846   static guint seq_id = 0;
 847
 848   g_return_if_fail (binding_set != NULL);
 849   g_return_if_fail (path_pattern != NULL);
 850   g_return_if_fail (priority <= GTK_PATH_PRIO_MASK);
 851
 852   priority &= GTK_PATH_PRIO_MASK;
 853
 854   switch (path_type)
 855     {
 856     case  GTK_PATH_WIDGET:
 857       slist_p = &binding_set->widget_path_pspecs;
 858       break;
 859     case  GTK_PATH_WIDGET_CLASS:
 860       slist_p = &binding_set->widget_class_pspecs;
 861       break;
 862     case  GTK_PATH_CLASS:
 863       slist_p = &binding_set->class_branch_pspecs;
 864       break;
 865     default:
 866       g_assert_not_reached ();
 867       slist_p = NULL;
 868       break;
 869     }
 870
 871   pspec = g_new (PatternSpec, 1);
 872   pspec->pspec = g_pattern_spec_new (path_pattern);
 873   pspec->seq_id = priority << 28;
 874   pspec->user_data = binding_set;
 875
 876   slist = *slist_p;
 877   while (slist)
 878     {
 879       PatternSpec *tmp_pspec;
 880
 881       tmp_pspec = slist->data;
 882       slist = slist->next;
 883
 884       if (g_pattern_spec_equal (tmp_pspec->pspec, pspec->pspec))
 885         {
 886           GtkPathPriorityType lprio = tmp_pspec->seq_id >> 28;
 887
 888           g_pattern_spec_free (pspec->pspec);
 889           g_free (pspec);
 890           pspec = NULL;
 891           if (lprio < priority)
 892             {
 893               tmp_pspec->seq_id &= 0x0fffffff;
 894               tmp_pspec->seq_id |= priority << 28;
 895             }
 896           break;
 897         }
 898     }
 899   if (pspec)
 900     {
 901       pspec->seq_id |= seq_id++ & 0x0fffffff;
 902       *slist_p = g_slist_prepend (*slist_p, pspec);
 903     }
 904 }
 905
 906 static gboolean
 907 binding_match_activate (GSList          *pspec_list,
 908                         GtkObject       *object,
 909                         guint            path_length,
 910                         const gchar     *path,
 911                         const gchar     *path_reversed)
 912 {
 913   GSList *slist;
 914
 915   for (slist = pspec_list; slist; slist = slist->next)
 916     {
 917       PatternSpec *pspec;
 918
 919       pspec = slist->data;
 920       if (g_pattern_match (pspec->pspec, path_length, path, path_reversed))
 921         {
 922           GtkBindingSet *binding_set;
 923
 924           binding_set = pspec->user_data;
 925
 926           if (gtk_binding_entry_activate (binding_set->current, object))
 927             return TRUE;
 928         }
 929     }
 930
 931   return FALSE;
 932 }
 933
 934 static gint
 935 gtk_binding_pattern_compare (gconstpointer new_pattern,
 936                              gconstpointer existing_pattern)
 937 {
 938   register const PatternSpec *np  = new_pattern;
 939   register const PatternSpec *ep  = existing_pattern;
 940
 941   /* walk the list as long as the existing patterns have
 942    * higher priorities.
 943    */
 944
 945   return np->seq_id < ep->seq_id;
 946 }
 947
 948 static GSList*
 949 gtk_binding_entries_sort_patterns (GSList      *entries,
 950                                    GtkPathType  path_id,
 951                                    gboolean     is_release)
 952 {
 953   GSList *patterns;
 954   GSList *tmp_list;
 955
 956   patterns = NULL;
 957   for (tmp_list = entries; tmp_list; tmp_list = tmp_list->next)
 958     {
 959       GtkBindingEntry *entry = tmp_list->data;
 960       GtkBindingSet *binding_set;
 961
 962       binding_set = entry->binding_set;
 963       binding_set->current = NULL;
 964     }
 965
 966   for (; entries; entries = entries->next)
 967     {
 968       GtkBindingEntry *entry = entries->data;
 969       GtkBindingSet *binding_set;
 970       GSList *slist = NULL;
 971
 972       if (is_release != ((entry->modifiers & GDK_RELEASE_MASK) != 0))
 973         continue;
 974
 975       binding_set = entry->binding_set;
 976
 977       if (binding_set->current)
 978         continue;
 979       binding_set->current = entry;
 980
 981       switch (path_id)
 982         {
 983         case GTK_PATH_WIDGET:
 984           slist = binding_set->widget_path_pspecs;
 985           break;
 986         case GTK_PATH_WIDGET_CLASS:
 987           slist = binding_set->widget_class_pspecs;
 988           break;
 989         case GTK_PATH_CLASS:
 990           slist = binding_set->class_branch_pspecs;
 991           break;
 992         }
 993
 994       for (; slist; slist = slist->next)
 995         {
 996           PatternSpec *pspec;
 997
 998           pspec = slist->data;
 999           patterns = g_slist_insert_sorted (patterns, pspec, gtk_binding_pattern_compare);
1000         }
1001     }
1002
1003   return patterns;
1004 }
1005
1006 static gboolean
1007 gtk_bindings_activate_list (GtkObject *object,
1008                             GSList    *entries,
1009                             gboolean   is_release)
1010 {
1011   GtkWidget *widget = GTK_WIDGET (object);
1012   gboolean handled = FALSE;
1013
1014   if (!entries)
1015     return FALSE;
1016
1017   if (!handled)
1018     {
1019       guint path_length;
1020       gchar *path, *path_reversed;
1021       GSList *patterns;
1022
1023       gtk_widget_path (widget, &path_length, &path, &path_reversed);
1024       patterns = gtk_binding_entries_sort_patterns (entries, GTK_PATH_WIDGET, is_release);
1025       handled = binding_match_activate (patterns, object, path_length, path, path_reversed);
1026       g_slist_free (patterns);
1027       g_free (path);
1028       g_free (path_reversed);
1029     }
1030
1031   if (!handled)
1032     {
1033       guint path_length;
1034       gchar *path, *path_reversed;
1035       GSList *patterns;
1036
1037       gtk_widget_class_path (widget, &path_length, &path, &path_reversed);
1038       patterns = gtk_binding_entries_sort_patterns (entries, GTK_PATH_WIDGET_CLASS, is_release);
1039       handled = binding_match_activate (patterns, object, path_length, path, path_reversed);
1040       g_slist_free (patterns);
1041       g_free (path);
1042       g_free (path_reversed);
1043     }
1044
1045   if (!handled)
1046     {
1047       GSList *patterns;
1048       GtkType class_type;
1049
1050       patterns = gtk_binding_entries_sort_patterns (entries, GTK_PATH_CLASS, is_release);
1051       class_type = GTK_OBJECT_TYPE (object);
1052       while (class_type && !handled)
1053         {
1054           guint path_length;
1055           const gchar *path;
1056           gchar *path_reversed;
1057
1058           path = gtk_type_name (class_type);
1059           path_reversed = g_strdup (path);
1060           g_strreverse (path_reversed);
1061           path_length = strlen (path);
1062           handled = binding_match_activate (patterns, object, path_length, path, path_reversed);
1063           g_free (path_reversed);
1064
1065           class_type = gtk_type_parent (class_type);
1066         }
1067       g_slist_free (patterns);
1068     }
1069
1070   return handled;
1071 }
1072
1073 gboolean
1074 gtk_bindings_activate (GtkObject      *object,
1075                        guint           keyval,
1076                        GdkModifierType modifiers)
1077 {
1078   GSList *entries = NULL;
1079   GdkDisplay *display;
1080   GtkKeyHash *key_hash;
1081   gboolean handled = FALSE;
1082   gboolean is_release;
1083
1084   g_return_val_if_fail (GTK_IS_OBJECT (object), FALSE);
1085
1086   if (!GTK_IS_WIDGET (object))
1087     return FALSE;
1088
1089   is_release = (modifiers & GDK_RELEASE_MASK) != 0;
1090   modifiers = modifiers & BINDING_MOD_MASK () & ~GDK_RELEASE_MASK;
1091
1092   display = gtk_widget_get_display (GTK_WIDGET (object));
1093   key_hash = binding_key_hash_for_keymap (gdk_keymap_get_for_display (display));
1094
1095   entries = _gtk_key_hash_lookup_keyval (key_hash, keyval, modifiers);
1096
1097   handled = gtk_bindings_activate_list (object, entries, is_release);
1098
1099   g_slist_free (entries);
1100
1101   return handled;
1102 }
1103
1104 /**
1105  * _gtk_bindings_activate_event:
1106  * @object: a #GtkObject (generally must be a widget)
1107  * @event: a #GdkEventKey
1108  *
1109  * Looks up key bindings for @object to find one matching
1110  * @event, and if one was found, activate it.
1111  *
1112  * Return value: %TRUE if a matching key binding was found
1113  **/
1114 gboolean
1115 _gtk_bindings_activate_event (GtkObject      *object,
1116                               GdkEventKey    *event)
1117 {
1118   GSList *entries = NULL;
1119   GdkDisplay *display;
1120   GtkKeyHash *key_hash;
1121   gboolean handled = FALSE;
1122
1123   g_return_val_if_fail (GTK_IS_OBJECT (object), FALSE);
1124
1125   if (!GTK_IS_WIDGET (object))
1126     return FALSE;
1127
1128   display = gtk_widget_get_display (GTK_WIDGET (object));
1129   key_hash = binding_key_hash_for_keymap (gdk_keymap_get_for_display (display));
1130
1131   entries = _gtk_key_hash_lookup (key_hash,
1132                                   event->hardware_keycode,
1133                                   event->state & BINDING_MOD_MASK () & ~GDK_RELEASE_MASK,
1134                                   event->group);
1135
1136   handled = gtk_bindings_activate_list (object, entries,
1137                                         event->type == GDK_KEY_RELEASE);
1138
1139   g_slist_free (entries);
1140
1141   return handled;
1142 }
1143
1144 static guint
1145 gtk_binding_parse_signal (GScanner       *scanner,
1146                           GtkBindingSet  *binding_set,
1147                           guint           keyval,
1148                           GdkModifierType modifiers)
1149 {
1150   gchar *signal;
1151   guint expected_token = 0;
1152   GSList *args;
1153   GSList *slist;
1154   gboolean done;
1155   gboolean negate;
1156   gboolean need_arg;
1157   gboolean seen_comma;
1158
1159   g_return_val_if_fail (scanner != NULL, G_TOKEN_ERROR);
1160
1161   g_scanner_get_next_token (scanner);
1162   if (scanner->token != G_TOKEN_STRING)
1163     return G_TOKEN_STRING;
1164   g_scanner_peek_next_token (scanner);
1165   if (scanner->next_token != '(')
1166     {
1167       g_scanner_get_next_token (scanner);
1168       return '(';
1169     }
1170   signal = g_strdup (scanner->value.v_string);
1171   g_scanner_get_next_token (scanner);
1172
1173   negate = FALSE;
1174   args = NULL;
1175   done = FALSE;
1176   need_arg = TRUE;
1177   seen_comma = FALSE;
1178   scanner->config->scan_symbols = FALSE;
1179   do
1180     {
1181       if (need_arg)
1182         expected_token = G_TOKEN_INT;
1183       else
1184         expected_token = ')';
1185       g_scanner_get_next_token (scanner);
1186       switch (scanner->token)
1187         {
1188           GtkBindingArg *arg;
1189
1190         case G_TOKEN_FLOAT:
1191           if (need_arg)
1192             {
1193               need_arg = FALSE;
1194               arg = g_new (GtkBindingArg, 1);
1195               arg->arg_type = GTK_TYPE_DOUBLE;
1196               arg->d.double_data = scanner->value.v_float;
1197               if (negate)
1198                 {
1199                   arg->d.double_data = - arg->d.double_data;
1200                   negate = FALSE;
1201                 }
1202               args = g_slist_prepend (args, arg);
1203             }
1204           else
1205             done = TRUE;
1206           break;
1207         case G_TOKEN_INT:
1208           if (need_arg)
1209             {
1210               need_arg = FALSE;
1211               arg = g_new (GtkBindingArg, 1);
1212               arg->arg_type = GTK_TYPE_LONG;
1213               arg->d.long_data = scanner->value.v_int;
1214               if (negate)
1215                 {
1216                   arg->d.long_data = - arg->d.long_data;
1217                   negate = FALSE;
1218                 }
1219               args = g_slist_prepend (args, arg);
1220             }
1221           else
1222             done = TRUE;
1223           break;
1224         case G_TOKEN_STRING:
1225           if (need_arg && !negate)
1226             {
1227               need_arg = FALSE;
1228               arg = g_new (GtkBindingArg, 1);
1229               arg->arg_type = GTK_TYPE_STRING;
1230               arg->d.string_data = g_strdup (scanner->value.v_string);
1231               args = g_slist_prepend (args, arg);
1232             }
1233           else
1234             done = TRUE;
1235           break;
1236         case G_TOKEN_IDENTIFIER:
1237           if (need_arg && !negate)
1238             {
1239               need_arg = FALSE;
1240               arg = g_new (GtkBindingArg, 1);
1241               arg->arg_type = GTK_TYPE_IDENTIFIER;
1242               arg->d.string_data = g_strdup (scanner->value.v_identifier);
1243               args = g_slist_prepend (args, arg);
1244             }
1245           else
1246             done = TRUE;
1247           break;
1248         case '-':
1249           if (!need_arg)
1250             done = TRUE;
1251           else if (negate)
1252             {
1253               expected_token = G_TOKEN_INT;
1254               done = TRUE;
1255             }
1256           else
1257             negate = TRUE;
1258           break;
1259         case ',':
1260           seen_comma = TRUE;
1261           if (need_arg)
1262             done = TRUE;
1263           else
1264             need_arg = TRUE;
1265           break;
1266         case ')':
1267           if (!(need_arg && seen_comma) && !negate)
1268             {
1269               args = g_slist_reverse (args);
1270               gtk_binding_entry_add_signall (binding_set,
1271                                              keyval,
1272                                              modifiers,
1273                                              signal,
1274                                              args);
1275               expected_token = G_TOKEN_NONE;
1276             }
1277           done = TRUE;
1278           break;
1279         default:
1280           done = TRUE;
1281           break;
1282         }
1283     }
1284   while (!done);
1285   scanner->config->scan_symbols = TRUE;
1286
1287   for (slist = args; slist; slist = slist->next)
1288     {
1289       GtkBindingArg *arg;
1290
1291       arg = slist->data;
1292       if (GTK_FUNDAMENTAL_TYPE (arg->arg_type) == GTK_TYPE_STRING)
1293         g_free (arg->d.string_data);
1294       g_free (arg);
1295     }
1296   g_slist_free (args);
1297   g_free (signal);
1298
1299   return expected_token;
1300 }
1301
1302 static inline guint
1303 gtk_binding_parse_bind (GScanner       *scanner,
1304                         GtkBindingSet  *binding_set)
1305 {
1306   guint keyval = 0;
1307   GdkModifierType modifiers = 0;
1308
1309   g_return_val_if_fail (scanner != NULL, G_TOKEN_ERROR);
1310
1311   g_scanner_get_next_token (scanner);
1312   if (scanner->token != GTK_RC_TOKEN_BIND)
1313     return GTK_RC_TOKEN_BIND;
1314   g_scanner_get_next_token (scanner);
1315   if (scanner->token != G_TOKEN_STRING)
1316     return G_TOKEN_STRING;
1317   gtk_accelerator_parse (scanner->value.v_string, &keyval, &modifiers);
1318   modifiers &= BINDING_MOD_MASK ();
1319   if (keyval == 0)
1320     return G_TOKEN_STRING;
1321
1322   g_scanner_get_next_token (scanner);
1323   if (scanner->token != '{')
1324     return '{';
1325
1326   gtk_binding_entry_clear (binding_set, keyval, modifiers);
1327
1328   g_scanner_peek_next_token (scanner);
1329   while (scanner->next_token != '}')
1330     {
1331       switch (scanner->next_token)
1332         {
1333           guint expected_token;
1334
1335         case G_TOKEN_STRING:
1336           expected_token = gtk_binding_parse_signal (scanner,
1337                                                      binding_set,
1338                                                      keyval,
1339                                                      modifiers);
1340           if (expected_token != G_TOKEN_NONE)
1341             return expected_token;
1342           break;
1343         default:
1344           g_scanner_get_next_token (scanner);
1345           return '}';
1346         }
1347       g_scanner_peek_next_token (scanner);
1348     }
1349   g_scanner_get_next_token (scanner);
1350
1351   return G_TOKEN_NONE;
1352 }
1353
1354 guint
1355 gtk_binding_parse_binding (GScanner       *scanner)
1356 {
1357   gchar *name;
1358   GtkBindingSet *binding_set;
1359
1360   g_return_val_if_fail (scanner != NULL, G_TOKEN_ERROR);
1361
1362   g_scanner_get_next_token (scanner);
1363   if (scanner->token != GTK_RC_TOKEN_BINDING)
1364     return GTK_RC_TOKEN_BINDING;
1365   g_scanner_get_next_token (scanner);
1366   if (scanner->token != G_TOKEN_STRING)
1367     return G_TOKEN_STRING;
1368   name = g_strdup (scanner->value.v_string);
1369
1370   g_scanner_get_next_token (scanner);
1371   if (scanner->token != '{')
1372     {
1373       g_free (name);
1374       return G_TOKEN_STRING;
1375     }
1376
1377   binding_set = gtk_binding_set_find (name);
1378   if (!binding_set)
1379     {
1380       binding_set = gtk_binding_set_new (name);
1381       binding_set->parsed = 1;
1382     }
1383   g_free (name);
1384
1385   g_scanner_peek_next_token (scanner);
1386   while (scanner->next_token != '}')
1387     {
1388       switch (scanner->next_token)
1389         {
1390           guint expected_token;
1391
1392         case GTK_RC_TOKEN_BIND:
1393           expected_token = gtk_binding_parse_bind (scanner, binding_set);
1394           if (expected_token != G_TOKEN_NONE)
1395             return expected_token;
1396           break;
1397         default:
1398           g_scanner_get_next_token (scanner);
1399           return '}';
1400         }
1401       g_scanner_peek_next_token (scanner);
1402     }
1403   g_scanner_get_next_token (scanner);
1404
1405   return G_TOKEN_NONE;
1406 }
1407
1408 static void
1409 free_pattern_specs (GSList *pattern_specs)
1410 {
1411   GSList *slist;
1412
1413   for (slist = pattern_specs; slist; slist = slist->next)
1414     {
1415       PatternSpec *pspec;
1416
1417       pspec = slist->data;
1418
1419       g_pattern_spec_free (pspec->pspec);
1420       g_free (pspec);
1421     }
1422
1423   g_slist_free (pattern_specs);
1424 }
1425
1426 static void
1427 binding_set_delete (GtkBindingSet *binding_set)
1428 {
1429   GtkBindingEntry *entry, *next;
1430
1431   entry = binding_set->entries;
1432   while (entry)
1433     {
1434       next = entry->set_next;
1435       binding_entry_destroy (entry);
1436       entry = next;
1437     }
1438
1439   free_pattern_specs (binding_set->widget_path_pspecs);
1440   free_pattern_specs (binding_set->widget_class_pspecs);
1441   free_pattern_specs (binding_set->class_branch_pspecs);
1442
1443   g_free (binding_set->set_name);
1444   g_free (binding_set);
1445 }
1446
1447 /**
1448  * _gtk_binding_reset_parsed:
1449  *
1450  * Removing all binding sets that were added by
1451  * gtk_binding_parse_binding()
1452  **/
1453 void
1454 _gtk_binding_reset_parsed (void)
1455 {
1456   GSList *slist, *next;
1457
1458   slist = binding_set_list;
1459   while (slist)
1460     {
1461       GtkBindingSet *binding_set;
1462
1463       binding_set = slist->data;
1464       next = slist->next;
1465
1466       if (binding_set->parsed)
1467         {
1468           binding_set_list = g_slist_delete_link (binding_set_list, slist);
1469           binding_set_delete (binding_set);
1470         }
1471
1472       slist = next;
1473     }
1474 }