Source

XEmacs / src / gui.c

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
/* Generic GUI code. (menubars, scrollbars, toolbars, dialogs)
   Copyright (C) 1995 Board of Trustees, University of Illinois.
   Copyright (C) 1995, 1996 Ben Wing.
   Copyright (C) 1995 Sun Microsystems, Inc.
   Copyright (C) 1998 Free Software Foundation, Inc.

This file is part of XEmacs.

XEmacs is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.

XEmacs is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with XEmacs; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

/* Synched up with: Not in FSF. */

/* This file not quite Mule-ized yet but will be when merged with my
   Mule workspace. --ben */

#include <config.h>
#include "lisp.h"
#include "gui.h"
#include "elhash.h"
#include "buffer.h"
#include "bytecode.h"

Lisp_Object Qmenu_no_selection_hook;
Lisp_Object Vmenu_no_selection_hook;

static Lisp_Object parse_gui_item_tree_list (Lisp_Object list);
Lisp_Object find_keyword_in_vector (Lisp_Object vector, Lisp_Object keyword);

#ifdef HAVE_POPUPS

/* count of menus/dboxes currently up */
int popup_up_p;

DEFUN ("popup-up-p", Fpopup_up_p, 0, 0, 0, /*
Return t if a popup menu or dialog box is up, nil otherwise.
See `popup-menu' and `popup-dialog-box'.
*/
       ())
{
  return popup_up_p ? Qt : Qnil;
}
#endif /* HAVE_POPUPS */

int
separator_string_p (const Bufbyte *s)
{
  const Bufbyte *p;
  Bufbyte first;

  if (!s || s[0] == '\0')
    return 0;
  first = s[0];
  if (first != '-' && first != '=')
    return 0;
  for (p = s; *p == first; p++)
    ;

  return (*p == '!' || *p == ':' || *p == '\0');
}

/* Massage DATA to find the correct function and argument.  Used by
   popup_selection_callback() and the msw code. */
void
get_gui_callback (Lisp_Object data, Lisp_Object *fn, Lisp_Object *arg)
{
  if (EQ (data, Qquit))
    {
      *fn = Qeval;
      *arg = list3 (Qsignal, list2 (Qquote, Qquit), Qnil);
      Vquit_flag = Qt;
    }
  else if (SYMBOLP (data)
	   || (COMPILED_FUNCTIONP (data)
	       && XCOMPILED_FUNCTION (data)->flags.interactivep)
	   || (CONSP (data) && (EQ (XCAR (data), Qlambda))
	       && !NILP (Fassq (Qinteractive, Fcdr (Fcdr (data))))))
    {
      *fn = Qcall_interactively;
      *arg = data;
    }
  else if (CONSP (data))
    {
      *fn = Qeval;
      *arg = data;
    }
  else
    {
      *fn = Qeval;
      *arg = list3 (Qsignal,
		    list2 (Qquote, Qerror),
		    list2 (Qquote, list2 (build_translated_string
					  ("illegal callback"),
					  data)));
    }
}

/*
 * Add a value VAL associated with keyword KEY into PGUI_ITEM
 * structure. If KEY is not a keyword, or is an unknown keyword, then
 * error is signaled.
 */
int
gui_item_add_keyval_pair (Lisp_Object gui_item,
			  Lisp_Object key, Lisp_Object val,
			  Error_behavior errb)
{
  Lisp_Gui_Item *pgui_item = XGUI_ITEM (gui_item);
  int retval = 0;

  if (!KEYWORDP (key))
    syntax_error_2 ("Non-keyword in gui item", key, pgui_item->name);

  if (EQ (key, Q_descriptor))
    {
      if (!EQ (pgui_item->name, val))
	{
	  retval = 1;
	  pgui_item->name   = val;
	}
    }
#define FROB(slot) \
  else if (EQ (key, Q_##slot))			\
  {						\
    if (!EQ (pgui_item->slot, val))			\
      {						\
	retval = 1;				\
	pgui_item->slot   = val;			\
      }						\
  }
  FROB (suffix)
  FROB (active)
  FROB (included)
  FROB (config)
  FROB (filter)
  FROB (style)
  FROB (selected)
  FROB (keys)
  FROB (callback)
  FROB (callback_ex)
  FROB (value)
#undef FROB
  else if (EQ (key, Q_key_sequence)) ;   /* ignored for FSF compatibility */
  else if (EQ (key, Q_label)) ;   /* ignored for 21.0 implement in 21.2  */
  else if (EQ (key, Q_accelerator))
    {
      if (!EQ (pgui_item->accelerator, val))
	{
	  retval = 1;
	  if (SYMBOLP (val) || CHARP (val))
	    pgui_item->accelerator = val;
	  else if (ERRB_EQ (errb, ERROR_ME))
	    syntax_error ("Bad keyboard accelerator", val);
	}
    }
  else if (ERRB_EQ (errb, ERROR_ME))
    syntax_error_2 ("Unknown keyword in gui item", key,
			   pgui_item->name);
  return retval;
}

void
gui_item_init (Lisp_Object gui_item)
{
  Lisp_Gui_Item *lp = XGUI_ITEM (gui_item);

  lp->name     = Qnil;
  lp->callback = Qnil;
  lp->callback_ex = Qnil;
  lp->suffix   = Qnil;
  lp->active   = Qt;
  lp->included = Qt;
  lp->config   = Qnil;
  lp->filter   = Qnil;
  lp->style    = Qnil;
  lp->selected = Qnil;
  lp->keys     = Qnil;
  lp->accelerator     = Qnil;
  lp->value = Qnil;
}

Lisp_Object
allocate_gui_item (void)
{
  Lisp_Gui_Item *lp = alloc_lcrecord_type (Lisp_Gui_Item, &lrecord_gui_item);
  Lisp_Object val;

  zero_lcrecord (lp);
  XSETGUI_ITEM (val, lp);

  gui_item_init (val);

  return val;
}

/*
 * ITEM is a lisp vector, describing a menu item or a button. The
 * function extracts the description of the item into the PGUI_ITEM
 * structure.
 */
static Lisp_Object
make_gui_item_from_keywords_internal (Lisp_Object item,
				      Error_behavior errb)
{
  int length, plist_p, start;
  Lisp_Object *contents;
  Lisp_Object gui_item = allocate_gui_item ();
  Lisp_Gui_Item *pgui_item = XGUI_ITEM (gui_item);

  CHECK_VECTOR (item);
  length = XVECTOR_LENGTH (item);
  contents = XVECTOR_DATA (item);

  if (length < 1)
    syntax_error ("GUI item descriptors must be at least 1 elts long", item);

  /* length 1:     		[ "name" ]
     length 2:		[ "name" callback ]
     length 3:		[ "name" callback active-p ]
     		   or	[ "name" keyword  value  ]
     length 4:		[ "name" callback active-p suffix ]
     		   or	[ "name" callback keyword  value  ]
     length 5+:		[ "name" callback [ keyword value ]+ ]
     		   or	[ "name" [ keyword value ]+ ]
  */
  plist_p = (length > 2 && (KEYWORDP (contents [1])
			    || KEYWORDP (contents [2])));

  pgui_item->name = contents [0];
  if (length > 1 && !KEYWORDP (contents [1]))
    {
      pgui_item->callback = contents [1];
      start = 2;
    }
  else
    start =1;

  if (!plist_p && length > 2)
    /* the old way */
    {
      pgui_item->active = contents [2];
      if (length == 4)
	pgui_item->suffix = contents [3];
    }
  else
    /* the new way */
    {
      int i;
      if ((length - start) & 1)
	syntax_error (
		"GUI item descriptor has an odd number of keywords and values",
			     item);

      for (i = start; i < length;)
	{
	  Lisp_Object key = contents [i++];
	  Lisp_Object val = contents [i++];
	  gui_item_add_keyval_pair (gui_item, key, val, errb);
	}
    }
  return gui_item;
}

/* This will only work with descriptors in the new format. */
Lisp_Object
widget_gui_parse_item_keywords (Lisp_Object item)
{
  int i, length;
  Lisp_Object *contents;
  Lisp_Object gui_item = allocate_gui_item ();
  Lisp_Object desc = find_keyword_in_vector (item, Q_descriptor);

  CHECK_VECTOR (item);
  length = XVECTOR_LENGTH (item);
  contents = XVECTOR_DATA (item);

  if (!NILP (desc) && !STRINGP (desc) && !VECTORP (desc))
    syntax_error ("Invalid GUI item descriptor", item);

  if (length & 1)
    {
      if (!SYMBOLP (contents [0]))
	syntax_error ("Invalid GUI item descriptor", item);
      contents++;			/* Ignore the leading symbol. */
      length--;
    }

  for (i = 0; i < length;)
    {
      Lisp_Object key = contents [i++];
      Lisp_Object val = contents [i++];
      gui_item_add_keyval_pair (gui_item, key, val, ERROR_ME_NOT);
    }

  return gui_item;
}

/* Update a gui item from a partial descriptor. */
int
update_gui_item_keywords (Lisp_Object gui_item, Lisp_Object item)
{
  int i, length, retval = 0;
  Lisp_Object *contents;

  CHECK_VECTOR (item);
  length = XVECTOR_LENGTH (item);
  contents = XVECTOR_DATA (item);

 if (length & 1)
    {
      if (!SYMBOLP (contents [0]))
	syntax_error ("Invalid GUI item descriptor", item);
      contents++;			/* Ignore the leading symbol. */
      length--;
    }

  for (i = 0; i < length;)
    {
      Lisp_Object key = contents [i++];
      Lisp_Object val = contents [i++];
      if (gui_item_add_keyval_pair (gui_item, key, val, ERROR_ME_NOT))
	retval = 1;
    }
  return retval;
}

Lisp_Object
gui_parse_item_keywords (Lisp_Object item)
{
  return make_gui_item_from_keywords_internal (item, ERROR_ME);
}

Lisp_Object
gui_parse_item_keywords_no_errors (Lisp_Object item)
{
  return make_gui_item_from_keywords_internal (item, ERROR_ME_NOT);
}

/* convert a gui item into plist properties */
void
gui_add_item_keywords_to_plist (Lisp_Object plist, Lisp_Object gui_item)
{
  Lisp_Gui_Item *pgui_item = XGUI_ITEM (gui_item);

  if (!NILP (pgui_item->callback))
    Fplist_put (plist, Q_callback, pgui_item->callback);
  if (!NILP (pgui_item->callback_ex))
    Fplist_put (plist, Q_callback_ex, pgui_item->callback_ex);
  if (!NILP (pgui_item->suffix))
    Fplist_put (plist, Q_suffix, pgui_item->suffix);
  if (!NILP (pgui_item->active))
    Fplist_put (plist, Q_active, pgui_item->active);
  if (!NILP (pgui_item->included))
    Fplist_put (plist, Q_included, pgui_item->included);
  if (!NILP (pgui_item->config))
    Fplist_put (plist, Q_config, pgui_item->config);
  if (!NILP (pgui_item->filter))
    Fplist_put (plist, Q_filter, pgui_item->filter);
  if (!NILP (pgui_item->style))
    Fplist_put (plist, Q_style, pgui_item->style);
  if (!NILP (pgui_item->selected))
    Fplist_put (plist, Q_selected, pgui_item->selected);
  if (!NILP (pgui_item->keys))
    Fplist_put (plist, Q_keys, pgui_item->keys);
  if (!NILP (pgui_item->accelerator))
    Fplist_put (plist, Q_accelerator, pgui_item->accelerator);
  if (!NILP (pgui_item->value))
    Fplist_put (plist, Q_value, pgui_item->value);
}

/*
 * Decide whether a GUI item is active by evaluating its :active form
 * if any
 */
int
gui_item_active_p (Lisp_Object gui_item)
{
  /* This function can call lisp */

  /* Shortcut to avoid evaluating Qt each time */
  return (EQ (XGUI_ITEM (gui_item)->active, Qt)
	  || !NILP (Feval (XGUI_ITEM (gui_item)->active)));
}

/* set menu accelerator key to first underlined character in menu name */
Lisp_Object
gui_item_accelerator (Lisp_Object gui_item)
{
  Lisp_Gui_Item *pgui = XGUI_ITEM (gui_item);

  if (!NILP (pgui->accelerator))
    return pgui->accelerator;

  else
    return gui_name_accelerator (pgui->name);
}

Lisp_Object
gui_name_accelerator (Lisp_Object nm)
{
  Bufbyte *name = XSTRING_DATA (nm);

  while (*name)
    {
      if (*name == '%')
	{
	  ++name;
	  if (!(*name))
	    return Qnil;
	  if (*name == '_' && *(name + 1))
	    {
	      Emchar accelerator = charptr_emchar (name + 1);
	      /* #### bogus current_buffer dependency */
	      return make_char (DOWNCASE (current_buffer, accelerator));
	    }
	}
	INC_CHARPTR (name);
    }
  return make_char (DOWNCASE (current_buffer,
			      charptr_emchar (XSTRING_DATA (nm))));
}

/*
 * Decide whether a GUI item is selected by evaluating its :selected form
 * if any
 */
int
gui_item_selected_p (Lisp_Object gui_item)
{
  /* This function can call lisp */

  /* Shortcut to avoid evaluating Qt each time */
  return (EQ (XGUI_ITEM (gui_item)->selected, Qt)
	  || !NILP (Feval (XGUI_ITEM (gui_item)->selected)));
}

Lisp_Object
gui_item_list_find_selected (Lisp_Object gui_item_list)
{
  /* This function can GC. */
  Lisp_Object rest;
  LIST_LOOP (rest, gui_item_list)
    {
      if (gui_item_selected_p (XCAR (rest)))
	return XCAR (rest);
    }
  return XCAR (gui_item_list);
}

/*
 * Decide whether a GUI item is included by evaluating its :included
 * form if given, and testing its :config form against supplied CONFLIST
 * configuration variable
 */
int
gui_item_included_p (Lisp_Object gui_item, Lisp_Object conflist)
{
  /* This function can call lisp */
  Lisp_Gui_Item *pgui_item = XGUI_ITEM (gui_item);

  /* Evaluate :included first. Shortcut to avoid evaluating Qt each time */
  if (!EQ (pgui_item->included, Qt)
      && NILP (Feval (pgui_item->included)))
    return 0;

  /* Do :config if conflist is given */
  if (!NILP (conflist) && !NILP (pgui_item->config)
      && NILP (Fmemq (pgui_item->config, conflist)))
    return 0;

  return 1;
}

static DOESNT_RETURN
signal_too_long_error (Lisp_Object name)
{
  syntax_error ("GUI item produces too long displayable string", name);
}

#ifdef HAVE_WINDOW_SYSTEM
/*
 * Format "left flush" display portion of an item into BUF, guarded by
 * maximum buffer size BUF_LEN. BUF_LEN does not count for terminating
 * null character, so actual maximum size of buffer consumed is
 * BUF_LEN + 1 bytes. If buffer is not big enough, then error is
 * signaled.
 * Return value is the offset to the terminating null character into the
 * buffer.
 */
unsigned int
gui_item_display_flush_left (Lisp_Object gui_item,
			     char *buf, Bytecount buf_len)
{
  /* This function can call lisp */
  char *p = buf;
  Bytecount len;
  Lisp_Gui_Item *pgui_item = XGUI_ITEM (gui_item);

  /* Copy item name first */
  CHECK_STRING (pgui_item->name);
  len = XSTRING_LENGTH (pgui_item->name);
  if (len > buf_len)
    signal_too_long_error (pgui_item->name);
  memcpy (p, XSTRING_DATA (pgui_item->name), len);
  p += len;

  /* Add space and suffix, if there is a suffix.
   * If suffix is not string evaluate it */
  if (!NILP (pgui_item->suffix))
    {
      Lisp_Object suffix = pgui_item->suffix;
      /* Shortcut to avoid evaluating suffix each time */
      if (!STRINGP (suffix))
	{
	  suffix = Feval (suffix);
	  CHECK_STRING (suffix);
	}

      len = XSTRING_LENGTH (suffix);
      if (p + len + 1 > buf + buf_len)
	signal_too_long_error (pgui_item->name);
      *(p++) = ' ';
      memcpy (p, XSTRING_DATA (suffix), len);
      p += len;
    }
  *p = '\0';
  return p - buf;
}

/*
 * Format "right flush" display portion of an item into BUF, guarded by
 * maximum buffer size BUF_LEN. BUF_LEN does not count for terminating
 * null character, so actual maximum size of buffer consumed is
 * BUF_LEN + 1 bytes. If buffer is not big enough, then error is
 * signaled.
 * Return value is the offset to the terminating null character into the
 * buffer.
 */
unsigned int
gui_item_display_flush_right (Lisp_Object gui_item,
			      char *buf, Bytecount buf_len)
{
  Lisp_Gui_Item *pgui_item = XGUI_ITEM (gui_item);
  *buf = 0;

#ifdef HAVE_MENUBARS
  /* Have keys? */
  if (!menubar_show_keybindings)
    return 0;
#endif

  /* Try :keys first */
  if (!NILP (pgui_item->keys))
    {
      CHECK_STRING (pgui_item->keys);
      if (XSTRING_LENGTH (pgui_item->keys) + 1 > buf_len)
	signal_too_long_error (pgui_item->name);
      memcpy (buf, XSTRING_DATA (pgui_item->keys),
	      XSTRING_LENGTH (pgui_item->keys) + 1);
      return XSTRING_LENGTH (pgui_item->keys);
    }

  /* See if we can derive keys out of callback symbol */
  if (SYMBOLP (pgui_item->callback))
    {
      char buf2[1024]; /* #### */
      Bytecount len;

      where_is_to_char (pgui_item->callback, buf2);
      len = strlen (buf2);
      if (len > buf_len)
	signal_too_long_error (pgui_item->name);
      strcpy (buf, buf2);
      return len;
    }

  /* No keys - no right flush display */
  return 0;
}
#endif /* HAVE_WINDOW_SYSTEM */

static Lisp_Object
mark_gui_item (Lisp_Object obj)
{
  Lisp_Gui_Item *p = XGUI_ITEM (obj);

  mark_object (p->name);
  mark_object (p->callback);
  mark_object (p->callback_ex);
  mark_object (p->config);
  mark_object (p->suffix);
  mark_object (p->active);
  mark_object (p->included);
  mark_object (p->config);
  mark_object (p->filter);
  mark_object (p->style);
  mark_object (p->selected);
  mark_object (p->keys);
  mark_object (p->accelerator);
  mark_object (p->value);

  return Qnil;
}

static unsigned long
gui_item_hash (Lisp_Object obj, int depth)
{
  Lisp_Gui_Item *p = XGUI_ITEM (obj);

  return HASH2 (HASH6 (internal_hash (p->name, depth + 1),
		       internal_hash (p->callback, depth + 1),
		       internal_hash (p->callback_ex, depth + 1),
		       internal_hash (p->suffix, depth + 1),
		       internal_hash (p->active, depth + 1),
		       internal_hash (p->included, depth + 1)),
		HASH6 (internal_hash (p->config, depth + 1),
		       internal_hash (p->filter, depth + 1),
		       internal_hash (p->style, depth + 1),
		       internal_hash (p->selected, depth + 1),
		       internal_hash (p->keys, depth + 1),
		       internal_hash (p->value, depth + 1)));
}

int
gui_item_id_hash (Lisp_Object hashtable, Lisp_Object gitem, int slot)
{
  int hashid = gui_item_hash (gitem, 0);
  int id = GUI_ITEM_ID_BITS (hashid, slot);
  while (!NILP (Fgethash (make_int (id),
			  hashtable, Qnil)))
    {
      id = GUI_ITEM_ID_BITS (id + 1, slot);
    }
  return id;
}

int
gui_item_equal_sans_selected (Lisp_Object obj1, Lisp_Object obj2, int depth)
{
  Lisp_Gui_Item *p1 = XGUI_ITEM (obj1);
  Lisp_Gui_Item *p2 = XGUI_ITEM (obj2);

  if (!(internal_equal (p1->name, p2->name, depth + 1)
	&&
	internal_equal (p1->callback, p2->callback, depth + 1)
	&&
	internal_equal (p1->callback_ex, p2->callback_ex, depth + 1)
	&&
	EQ (p1->suffix, p2->suffix)
	&&
	EQ (p1->active, p2->active)
	&&
	EQ (p1->included, p2->included)
	&&
	EQ (p1->config, p2->config)
	&&
	EQ (p1->filter, p2->filter)
	&&
	EQ (p1->style, p2->style)
	&&
	EQ (p1->accelerator, p2->accelerator)
	&&
	EQ (p1->keys, p2->keys)
	&&
	EQ (p1->value, p2->value)))
    return 0;
  return 1;
}

static int
gui_item_equal (Lisp_Object obj1, Lisp_Object obj2, int depth)
{
  Lisp_Gui_Item *p1 = XGUI_ITEM (obj1);
  Lisp_Gui_Item *p2 = XGUI_ITEM (obj2);

  if (!(gui_item_equal_sans_selected (obj1, obj2, depth)
	&&
	EQ (p1->selected, p2->selected)))
    return 0;
  return 1;
}

static void
print_gui_item (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
{
  Lisp_Gui_Item *g = XGUI_ITEM (obj);
  char buf[20];

  if (print_readably)
    error ("printing unreadable object #<gui-item 0x%x>", g->header.uid);

  write_c_string ("#<gui-item ", printcharfun);
  sprintf (buf, "0x%x>", g->header.uid);
  write_c_string (buf, printcharfun);
}

Lisp_Object
copy_gui_item (Lisp_Object gui_item)
{
  Lisp_Object  ret = allocate_gui_item ();
  Lisp_Gui_Item *lp, *g = XGUI_ITEM (gui_item);

  lp = XGUI_ITEM (ret);
  lp->name     = g->name;
  lp->callback = g->callback;
  lp->callback_ex = g->callback_ex;
  lp->suffix   = g->suffix;
  lp->active   = g->active;
  lp->included = g->included;
  lp->config   = g->config;
  lp->filter   = g->filter;
  lp->style    = g->style;
  lp->selected = g->selected;
  lp->keys     = g->keys;
  lp->accelerator     = g->accelerator;
  lp->value = g->value;

  return ret;
}

Lisp_Object
copy_gui_item_tree (Lisp_Object arg)
{
  if (CONSP (arg))
    {
      Lisp_Object rest = arg = Fcopy_sequence (arg);
      while (CONSP (rest))
	{
	  XCAR (rest) = copy_gui_item_tree (XCAR (rest));
	  rest = XCDR (rest);
	}
      return arg;
    }
  else if (GUI_ITEMP (arg))
    return copy_gui_item (arg);
  else
    return arg;
}

/* parse a glyph descriptor into a tree of gui items.

   The gui_item slot of an image instance can be a single item or an
   arbitrarily nested hierarchy of item lists. */

static Lisp_Object
parse_gui_item_tree_item (Lisp_Object entry)
{
  Lisp_Object ret = entry;
  struct gcpro gcpro1;

  GCPRO1 (ret);

  if (VECTORP (entry))
    {
      ret = gui_parse_item_keywords_no_errors (entry);
    }
  else if (STRINGP (entry))
    {
      CHECK_STRING (entry);
    }
  else
    syntax_error ("item must be a vector or a string", entry);

  RETURN_UNGCPRO (ret);
}

Lisp_Object
parse_gui_item_tree_children (Lisp_Object list)
{
  Lisp_Object rest, ret = Qnil, sub = Qnil;
  struct gcpro gcpro1, gcpro2;

  GCPRO2 (ret, sub);
  CHECK_CONS (list);
  /* recursively add items to the tree view */
  LIST_LOOP (rest, list)
    {
      if (CONSP (XCAR (rest)))
	sub = parse_gui_item_tree_list (XCAR (rest));
      else
	sub = parse_gui_item_tree_item (XCAR (rest));

      ret = Fcons (sub, ret);
    }
  /* make the order the same as the items we have parsed */
  RETURN_UNGCPRO (Fnreverse (ret));
}

static Lisp_Object
parse_gui_item_tree_list (Lisp_Object list)
{
  Lisp_Object ret;
  struct gcpro gcpro1;
  CHECK_CONS (list);
  /* first one can never be a list */
  ret = parse_gui_item_tree_item (XCAR (list));
  GCPRO1 (ret);
  ret = Fcons (ret, parse_gui_item_tree_children (XCDR (list)));
  RETURN_UNGCPRO (ret);
}

static void
finalize_gui_item (void* header, int for_disksave)
{
}

DEFINE_LRECORD_IMPLEMENTATION ("gui-item", gui_item,
			       mark_gui_item, print_gui_item,
			       finalize_gui_item, gui_item_equal,
			       gui_item_hash,
			       0,
			       Lisp_Gui_Item);

void
syms_of_gui (void)
{
  INIT_LRECORD_IMPLEMENTATION (gui_item);

  DEFSYMBOL (Qmenu_no_selection_hook);

#ifdef HAVE_POPUPS
  DEFSUBR (Fpopup_up_p);
#endif
}

void
vars_of_gui (void)
{
  DEFVAR_LISP ("menu-no-selection-hook", &Vmenu_no_selection_hook /*
Function or functions to call when a menu or dialog box is dismissed
without a selection having been made.
*/ );
  Vmenu_no_selection_hook = Qnil;
}
Tip: Filter by directory path e.g. /media app.js to search for public/media/app.js.
Tip: Use camelCasing e.g. ProjME to search for ProjectModifiedEvent.java.
Tip: Filter by extension type e.g. /repo .js to search for all .js files in the /repo directory.
Tip: Separate your search with spaces e.g. /ssh pom.xml to search for src/ssh/pom.xml.
Tip: Use ↑ and ↓ arrow keys to navigate and return to view the file.
Tip: You can also navigate files with Ctrl+j (next) and Ctrl+k (previous) and view the file with Ctrl+o.
Tip: You can also navigate files with Alt+j (next) and Alt+k (previous) and view the file with Alt+o.