frame.c 69.8 KB
Newer Older
Jim Blandy's avatar
Jim Blandy committed
1
/* Generic frame functions.
2
   Copyright (C) 1993, 1994, 1995 Free Software Foundation.
Jim Blandy's avatar
Jim Blandy committed
3 4 5 6 7

This file is part of GNU Emacs.

GNU Emacs is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
Jim Blandy's avatar
Jim Blandy committed
8
the Free Software Foundation; either version 2, or (at your option)
Jim Blandy's avatar
Jim Blandy committed
9 10 11 12 13 14 15 16 17
any later version.

GNU Emacs 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 GNU Emacs; see the file COPYING.  If not, write to
18 19
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */
Jim Blandy's avatar
Jim Blandy committed
20

21
#include <config.h>
22 23

#include <stdio.h>
24 25
#include "lisp.h"
#include "frame.h"
26
#include "termhooks.h"
27
#include "window.h"
Morten Welinder's avatar
Morten Welinder committed
28 29 30
#ifdef MSDOS
#include "msdos.h"
#endif
Jim Blandy's avatar
Jim Blandy committed
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
/* Evaluate this expression to rebuild the section of syms_of_frame
   that initializes and staticpros the symbols declared below.  Note
   that Emacs 18 has a bug that keeps C-x C-e from being able to
   evaluate this expression.

(progn
  ;; Accumulate a list of the symbols we want to initialize from the
  ;; declarations at the top of the file.
  (goto-char (point-min))
  (search-forward "/\*&&& symbols declared here &&&*\/\n")
  (let (symbol-list)
    (while (looking-at "Lisp_Object \\(Q[a-z_]+\\)")
      (setq symbol-list
	    (cons (buffer-substring (match-beginning 1) (match-end 1))
		  symbol-list))
      (forward-line 1))
    (setq symbol-list (nreverse symbol-list))
    ;; Delete the section of syms_of_... where we initialize the symbols.
    (search-forward "\n  /\*&&& init symbols here &&&*\/\n")
    (let ((start (point)))
      (while (looking-at "^  Q")
	(forward-line 2))
      (kill-region start (point)))
    ;; Write a new symbol initialization section.
    (while symbol-list
      (insert (format "  %s = intern (\"" (car symbol-list)))
      (let ((start (point)))
	(insert (substring (car symbol-list) 1))
	(subst-char-in-region start (point) ?_ ?-))
      (insert (format "\");\n  staticpro (&%s);\n" (car symbol-list)))
      (setq symbol-list (cdr symbol-list)))))
  */        

65 66
/* We need most of these symbols even if not MULTI_FRAME;
   easiest to define them all, all of the time.  */
67 68
/*&&& symbols declared here &&&*/
Lisp_Object Qframep;
Jim Blandy's avatar
Jim Blandy committed
69
Lisp_Object Qframe_live_p;
70 71
Lisp_Object Qheight;
Lisp_Object Qicon;
Jim Blandy's avatar
Jim Blandy committed
72
Lisp_Object Qminibuffer;
73 74 75 76
Lisp_Object Qmodeline;
Lisp_Object Qname;
Lisp_Object Qonly;
Lisp_Object Qunsplittable;
77
Lisp_Object Qmenu_bar_lines;
78 79
Lisp_Object Qwidth;
Lisp_Object Qx;
80
Lisp_Object Qwin32;
81
Lisp_Object Qvisible;
82
Lisp_Object Qbuffer_predicate;
83
Lisp_Object Qtitle;
Jim Blandy's avatar
Jim Blandy committed
84

85
Lisp_Object Vterminal_frame;
86
Lisp_Object Vdefault_frame_alist;
87

88 89
Lisp_Object Qmouse_leave_buffer_hook;

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
static void
syms_of_frame_1 ()
{
  /*&&& init symbols here &&&*/
  Qframep = intern ("framep");
  staticpro (&Qframep);
  Qframe_live_p = intern ("frame-live-p");
  staticpro (&Qframe_live_p);
  Qheight = intern ("height");
  staticpro (&Qheight);
  Qicon = intern ("icon");
  staticpro (&Qicon);
  Qminibuffer = intern ("minibuffer");
  staticpro (&Qminibuffer);
  Qmodeline = intern ("modeline");
  staticpro (&Qmodeline);
  Qname = intern ("name");
  staticpro (&Qname);
  Qonly = intern ("only");
  staticpro (&Qonly);
  Qunsplittable = intern ("unsplittable");
  staticpro (&Qunsplittable);
  Qmenu_bar_lines = intern ("menu-bar-lines");
  staticpro (&Qmenu_bar_lines);
  Qwidth = intern ("width");
  staticpro (&Qwidth);
  Qx = intern ("x");
  staticpro (&Qx);
118 119
  Qwin32 = intern ("win32");
  staticpro (&Qwin32);
120 121 122 123
  Qvisible = intern ("visible");
  staticpro (&Qvisible);
  Qbuffer_predicate = intern ("buffer-predicate");
  staticpro (&Qbuffer_predicate);
124 125
  Qtitle = intern ("title");
  staticpro (&Qtitle);
126 127 128

  Qmouse_leave_buffer_hook = intern ("mouse-leave-buffer-hook");
  staticpro (&Qmouse_leave_buffer_hook);
129 130 131 132 133 134 135 136 137 138 139 140 141

  DEFVAR_LISP ("default-frame-alist", &Vdefault_frame_alist,
    "Alist of default values for frame creation.\n\
These may be set in your init file, like this:\n\
  (setq default-frame-alist '((width . 80) (height . 55) (menu-bar-lines . 1))\n\
These override values given in window system configuration data,\n\
 including X Windows' defaults database.\n\
For values specific to the first Emacs frame, see `initial-frame-alist'.\n\
For values specific to the separate minibuffer frame, see\n\
 `minibuffer-frame-alist'.\n\
The `menu-bar-lines' element of the list controls whether new frames\n\
 have menu bars; `menu-bar-mode' works by altering this element.");
  Vdefault_frame_alist = Qnil;
142 143 144 145 146 147 148 149 150
}

static void
set_menu_bar_lines_1 (window, n)
  Lisp_Object window;
  int n;
{
  struct window *w = XWINDOW (window);

151
  XSETFASTINT (w->last_modified, 0);
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
  XSETFASTINT (w->top, XFASTINT (w->top) + n);
  XSETFASTINT (w->height, XFASTINT (w->height) - n);

  /* Handle just the top child in a vertical split.  */
  if (!NILP (w->vchild))
    set_menu_bar_lines_1 (w->vchild, n);

  /* Adjust all children in a horizontal split.  */
  for (window = w->hchild; !NILP (window); window = w->next)
    {
      w = XWINDOW (window);
      set_menu_bar_lines_1 (window, n);
    }
}

static void
set_menu_bar_lines (f, value, oldval)
     struct frame *f;
     Lisp_Object value, oldval;
{
  int nlines;
  int olines = FRAME_MENU_BAR_LINES (f);

  /* Right now, menu bars don't work properly in minibuf-only frames;
     most of the commands try to apply themselves to the minibuffer
     frame itslef, and get an error because you can't switch buffers
     in or split the minibuffer window.  */
  if (FRAME_MINIBUF_ONLY_P (f))
    return;

  if (INTEGERP (value))
    nlines = XINT (value);
  else
    nlines = 0;

187 188 189 190 191 192 193
  if (nlines != olines)
    {
      windows_or_buffers_changed++;
      FRAME_WINDOW_SIZES_CHANGED (f) = 1;
      FRAME_MENU_BAR_LINES (f) = nlines;
      set_menu_bar_lines_1 (f->root_window, nlines - olines);
    }
194 195 196 197 198 199 200 201 202 203 204 205 206
}

#ifdef MULTI_FRAME

#include "buffer.h"

/* These help us bind and responding to switch-frame events.  */
#include "commands.h"
#include "keyboard.h"

Lisp_Object Vemacs_iconified;
Lisp_Object Vframe_list;

Jim Blandy's avatar
Jim Blandy committed
207 208
extern Lisp_Object Vminibuffer_list;
extern Lisp_Object get_minibuffer ();
209 210
extern Lisp_Object Fhandle_switch_frame ();
extern Lisp_Object Fredirect_frame_focus ();
Karl Heuer's avatar
Karl Heuer committed
211
extern Lisp_Object x_get_focus_frame ();
Jim Blandy's avatar
Jim Blandy committed
212

Jim Blandy's avatar
Jim Blandy committed
213 214 215
DEFUN ("framep", Fframep, Sframep, 1, 1, 0,
  "Return non-nil if OBJECT is a frame.\n\
Value is t for a termcap frame (a character-only terminal),\n\
Morten Welinder's avatar
Morten Welinder committed
216 217
`x' for an Emacs frame that is really an X window,\n\
`pc' for a direct-write MS-DOS frame.\n\
Richard M. Stallman's avatar
Richard M. Stallman committed
218
See also `frame-live-p'.")
Jim Blandy's avatar
Jim Blandy committed
219 220
  (object)
     Lisp_Object object;
Jim Blandy's avatar
Jim Blandy committed
221
{
222
  if (!FRAMEP (object))
Jim Blandy's avatar
Jim Blandy committed
223
    return Qnil;
Jim Blandy's avatar
Jim Blandy committed
224
  switch (XFRAME (object)->output_method)
Jim Blandy's avatar
Jim Blandy committed
225 226 227 228
    {
    case output_termcap:
      return Qt;
    case output_x_window:
229
      return Qx;
230 231
    case output_win32:
      return Qwin32;
Morten Welinder's avatar
Morten Welinder committed
232
      /* The `pc' case is in the Fframep below.  */
Jim Blandy's avatar
Jim Blandy committed
233 234 235 236 237
    default:
      abort ();
    }
}

Jim Blandy's avatar
Jim Blandy committed
238
DEFUN ("frame-live-p", Fframe_live_p, Sframe_live_p, 1, 1, 0,
Jim Blandy's avatar
Jim Blandy committed
239 240 241 242 243
  "Return non-nil if OBJECT is a frame which has not been deleted.\n\
Value is nil if OBJECT is not a live frame.  If object is a live\n\
frame, the return value indicates what sort of output device it is\n\
displayed on.  Value is t for a termcap frame (a character-only\n\
terminal), `x' for an Emacs frame being displayed in an X window.")
Jim Blandy's avatar
Jim Blandy committed
244 245 246
  (object)
     Lisp_Object object;
{
Jim Blandy's avatar
Jim Blandy committed
247 248 249
  return ((FRAMEP (object)
	   && FRAME_LIVE_P (XFRAME (object)))
	  ? Fframep (object)
Jim Blandy's avatar
Jim Blandy committed
250 251 252
	  : Qnil);
}

Jim Blandy's avatar
Jim Blandy committed
253 254
struct frame *
make_frame (mini_p)
Jim Blandy's avatar
Jim Blandy committed
255 256
     int mini_p;
{
Jim Blandy's avatar
Jim Blandy committed
257 258
  Lisp_Object frame;
  register struct frame *f;
Jim Blandy's avatar
Jim Blandy committed
259 260
  register Lisp_Object root_window;
  register Lisp_Object mini_window;
261 262 263 264 265 266 267 268 269
  register struct Lisp_Vector *vec;
  int i;

  vec = allocate_vectorlike ((EMACS_INT) VECSIZE (struct frame));
  for (i = 0; i < VECSIZE (struct frame); i++)
    XSETFASTINT (vec->contents[i], 0);
  vec->size = VECSIZE (struct frame);
  f = (struct frame *)vec;
  XSETFRAME (frame, f);
Jim Blandy's avatar
Jim Blandy committed
270 271 272 273 274 275

  f->cursor_x = 0;
  f->cursor_y = 0;
  f->current_glyphs = 0;
  f->desired_glyphs = 0;
  f->visible = 0;
276
  f->async_visible = 0;
277
  f->output_data.nothing = 0;
Jim Blandy's avatar
Jim Blandy committed
278
  f->iconified = 0;
279
  f->async_iconified = 0;
Jim Blandy's avatar
Jim Blandy committed
280 281 282 283 284 285
  f->wants_modeline = 1;
  f->auto_raise = 0;
  f->auto_lower = 0;
  f->no_split = 0;
  f->garbaged = 0;
  f->has_minibuffer = mini_p;
286
  f->focus_frame = Qnil;
287
  f->explicit_name = 0;
288 289
  f->can_have_scroll_bars = 0;
  f->has_vertical_scroll_bars = 0;
Jim Blandy's avatar
Jim Blandy committed
290
  f->param_alist = Qnil;
291 292
  f->scroll_bars = Qnil;
  f->condemned_scroll_bars = Qnil;
293
  f->face_alist = Qnil;
294
  f->menu_bar_items = Qnil;
295 296
  f->menu_bar_vector = Qnil;
  f->menu_bar_items_used = 0;
297
  f->buffer_predicate = Qnil;
298 299 300
#ifdef MULTI_KBOARD
  f->kboard = initial_kboard;
#endif
301
  f->namebuf = 0;
302
  f->title = Qnil;
Jim Blandy's avatar
Jim Blandy committed
303

304
  root_window = make_window ();
Jim Blandy's avatar
Jim Blandy committed
305 306
  if (mini_p)
    {
307
      mini_window = make_window ();
Jim Blandy's avatar
Jim Blandy committed
308 309 310
      XWINDOW (root_window)->next = mini_window;
      XWINDOW (mini_window)->prev = root_window;
      XWINDOW (mini_window)->mini_p = Qt;
Jim Blandy's avatar
Jim Blandy committed
311 312
      XWINDOW (mini_window)->frame = frame;
      f->minibuffer_window = mini_window;
Jim Blandy's avatar
Jim Blandy committed
313 314 315 316 317
    }
  else
    {
      mini_window = Qnil;
      XWINDOW (root_window)->next = Qnil;
Jim Blandy's avatar
Jim Blandy committed
318
      f->minibuffer_window = Qnil;
Jim Blandy's avatar
Jim Blandy committed
319 320
    }

Jim Blandy's avatar
Jim Blandy committed
321
  XWINDOW (root_window)->frame = frame;
Jim Blandy's avatar
Jim Blandy committed
322 323 324

  /* 10 is arbitrary,
     just so that there is "something there."
Jim Blandy's avatar
Jim Blandy committed
325
     Correct size will be set up later with change_frame_size.  */
Jim Blandy's avatar
Jim Blandy committed
326

Jim Blandy's avatar
Jim Blandy committed
327 328
  f->width = 10;
  f->height = 10;
Jim Blandy's avatar
Jim Blandy committed
329

330 331
  XSETFASTINT (XWINDOW (root_window)->width, 10);
  XSETFASTINT (XWINDOW (root_window)->height, (mini_p ? 9 : 10));
Jim Blandy's avatar
Jim Blandy committed
332 333 334

  if (mini_p)
    {
335 336 337
      XSETFASTINT (XWINDOW (mini_window)->width, 10);
      XSETFASTINT (XWINDOW (mini_window)->top, 9);
      XSETFASTINT (XWINDOW (mini_window)->height, 1);
Jim Blandy's avatar
Jim Blandy committed
338 339
    }

Jim Blandy's avatar
Jim Blandy committed
340
  /* Choose a buffer for the frame's root window.  */
Jim Blandy's avatar
Jim Blandy committed
341 342 343 344 345 346 347 348
  {
    Lisp_Object buf;

    XWINDOW (root_window)->buffer = Qt;
    buf = Fcurrent_buffer ();
    /* If buf is a 'hidden' buffer (i.e. one whose name starts with
       a space), try to find another one.  */
    if (XSTRING (Fbuffer_name (buf))->data[0] == ' ')
349
      buf = Fother_buffer (buf, Qnil);
Jim Blandy's avatar
Jim Blandy committed
350 351 352
    Fset_window_buffer (root_window, buf);
  }

Jim Blandy's avatar
Jim Blandy committed
353 354 355 356
  if (mini_p)
    {
      XWINDOW (mini_window)->buffer = Qt;
      Fset_window_buffer (mini_window,
Jim Blandy's avatar
Jim Blandy committed
357
			  (NILP (Vminibuffer_list)
Jim Blandy's avatar
Jim Blandy committed
358 359 360 361
			   ? get_minibuffer (0)
			   : Fcar (Vminibuffer_list)));
    }

Jim Blandy's avatar
Jim Blandy committed
362 363
  f->root_window = root_window;
  f->selected_window = root_window;
Jim Blandy's avatar
Jim Blandy committed
364 365
  /* Make sure this window seems more recently used than
     a newly-created, never-selected window.  */
366
  XSETFASTINT (XWINDOW (f->selected_window)->use_time, ++window_select_count);
Jim Blandy's avatar
Jim Blandy committed
367

Jim Blandy's avatar
Jim Blandy committed
368
  return f;
Jim Blandy's avatar
Jim Blandy committed
369 370
}

Jim Blandy's avatar
Jim Blandy committed
371
/* Make a frame using a separate minibuffer window on another frame.
Jim Blandy's avatar
Jim Blandy committed
372 373 374
   MINI_WINDOW is the minibuffer window to use.  nil means use the
   default (the global minibuffer).  */

Jim Blandy's avatar
Jim Blandy committed
375
struct frame *
376
make_frame_without_minibuffer (mini_window, kb, display)
Jim Blandy's avatar
Jim Blandy committed
377
     register Lisp_Object mini_window;
378
     KBOARD *kb;
379
     Lisp_Object display;
Jim Blandy's avatar
Jim Blandy committed
380
{
Jim Blandy's avatar
Jim Blandy committed
381
  register struct frame *f;
Jim Blandy's avatar
Jim Blandy committed
382

383 384
  if (!NILP (mini_window))
    CHECK_LIVE_WINDOW (mini_window, 0);
Jim Blandy's avatar
Jim Blandy committed
385

386
#ifdef MULTI_KBOARD
387 388
  if (!NILP (mini_window)
      && XFRAME (XWINDOW (mini_window)->frame)->kboard != kb)
389 390 391
    error ("frame and minibuffer must be on the same display");
#endif

Jim Blandy's avatar
Jim Blandy committed
392 393
  /* Make a frame containing just a root window.  */
  f = make_frame (0);
Jim Blandy's avatar
Jim Blandy committed
394

395 396 397 398 399 400 401 402 403 404 405 406
  if (NILP (mini_window))
    {
      /* Use default-minibuffer-frame if possible.  */
      if (!FRAMEP (kb->Vdefault_minibuffer_frame)
	  || ! FRAME_LIVE_P (XFRAME (kb->Vdefault_minibuffer_frame)))
	{
	  /* If there's no minibuffer frame to use, create one.  */
	  kb->Vdefault_minibuffer_frame
	    = call1 (intern ("make-initial-minibuffer-frame"), display);
	}
      mini_window = XFRAME (kb->Vdefault_minibuffer_frame)->minibuffer_window;
    }
Jim Blandy's avatar
Jim Blandy committed
407
  /* Install the chosen minibuffer window, with proper buffer.  */
Jim Blandy's avatar
Jim Blandy committed
408
  f->minibuffer_window = mini_window;
Jim Blandy's avatar
Jim Blandy committed
409
  Fset_window_buffer (mini_window,
Jim Blandy's avatar
Jim Blandy committed
410
		      (NILP (Vminibuffer_list)
Jim Blandy's avatar
Jim Blandy committed
411 412
		       ? get_minibuffer (0)
		       : Fcar (Vminibuffer_list)));
Jim Blandy's avatar
Jim Blandy committed
413
  return f;
Jim Blandy's avatar
Jim Blandy committed
414 415
}

Jim Blandy's avatar
Jim Blandy committed
416
/* Make a frame containing only a minibuffer window.  */
Jim Blandy's avatar
Jim Blandy committed
417

Jim Blandy's avatar
Jim Blandy committed
418 419
struct frame *
make_minibuffer_frame ()
Jim Blandy's avatar
Jim Blandy committed
420
{
Jim Blandy's avatar
Jim Blandy committed
421
  /* First make a frame containing just a root window, no minibuffer.  */
Jim Blandy's avatar
Jim Blandy committed
422

Jim Blandy's avatar
Jim Blandy committed
423
  register struct frame *f = make_frame (0);
Jim Blandy's avatar
Jim Blandy committed
424
  register Lisp_Object mini_window;
Jim Blandy's avatar
Jim Blandy committed
425
  register Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
426

427
  XSETFRAME (frame, f);
Jim Blandy's avatar
Jim Blandy committed
428

429
  f->auto_raise = 0;
Jim Blandy's avatar
Jim Blandy committed
430 431 432 433
  f->auto_lower = 0;
  f->no_split = 1;
  f->wants_modeline = 0;
  f->has_minibuffer = 1;
Jim Blandy's avatar
Jim Blandy committed
434 435 436 437 438

  /* Now label the root window as also being the minibuffer.
     Avoid infinite looping on the window chain by marking next pointer
     as nil. */

Jim Blandy's avatar
Jim Blandy committed
439
  mini_window = f->minibuffer_window = f->root_window;
Jim Blandy's avatar
Jim Blandy committed
440 441
  XWINDOW (mini_window)->mini_p = Qt;
  XWINDOW (mini_window)->next = Qnil;
442
  XWINDOW (mini_window)->prev = Qnil;
Jim Blandy's avatar
Jim Blandy committed
443
  XWINDOW (mini_window)->frame = frame;
Jim Blandy's avatar
Jim Blandy committed
444 445 446 447

  /* Put the proper buffer in that window.  */

  Fset_window_buffer (mini_window,
Jim Blandy's avatar
Jim Blandy committed
448
		      (NILP (Vminibuffer_list)
Jim Blandy's avatar
Jim Blandy committed
449 450
		       ? get_minibuffer (0)
		       : Fcar (Vminibuffer_list)));
Jim Blandy's avatar
Jim Blandy committed
451
  return f;
Jim Blandy's avatar
Jim Blandy committed
452 453
}

Jim Blandy's avatar
Jim Blandy committed
454
/* Construct a frame that refers to the terminal (stdin and stdout).  */
Jim Blandy's avatar
Jim Blandy committed
455

456 457
static int terminal_frame_count;

Jim Blandy's avatar
Jim Blandy committed
458 459
struct frame *
make_terminal_frame ()
Jim Blandy's avatar
Jim Blandy committed
460
{
Jim Blandy's avatar
Jim Blandy committed
461
  register struct frame *f;
462
  Lisp_Object frame;
463 464
  char name[20];

465 466 467 468 469
#ifdef MULTI_KBOARD
  if (!initial_kboard)
    {
      initial_kboard = (KBOARD *) xmalloc (sizeof (KBOARD));
      init_kboard (initial_kboard);
470 471
      initial_kboard->next_kboard = all_kboards;
      all_kboards = initial_kboard;
472 473 474
    }
#endif

475 476 477
  /* The first call must initialize Vframe_list.  */
  if (! (NILP (Vframe_list) || CONSP (Vframe_list)))
    Vframe_list = Qnil;
Jim Blandy's avatar
Jim Blandy committed
478 479

  f = make_frame (1);
480

481
  XSETFRAME (frame, f);
482 483
  Vframe_list = Fcons (frame, Vframe_list);

484
  terminal_frame_count++;
485 486 487 488 489 490 491 492 493
  if (terminal_frame_count == 1)
    {
      f->name = build_string ("Emacs");
    }
  else
    {
      sprintf (name, "Emacs-%d", terminal_frame_count);
      f->name = build_string (name);
    }
494 495 496

  f->visible = 1;		/* FRAME_SET_VISIBLE wd set frame_garbaged. */
  f->async_visible = 1;		/* Don't let visible be cleared later. */
497
  f->output_data.nothing = 1;	/* Nonzero means frame isn't deleted.  */
Jim Blandy's avatar
Jim Blandy committed
498
  return f;
Jim Blandy's avatar
Jim Blandy committed
499
}
500 501

DEFUN ("make-terminal-frame", Fmake_terminal_frame, Smake_terminal_frame,
502 503 504 505 506 507
       1, 1, 0, "Create an additional terminal frame.\n\
You can create multiple frames on a text-only terminal in this way.\n\
Only the selected terminal frame is actually displayed.\n\
This function takes one argument, an alist specifying frame parameters.\n\
In practice, generally you don't need to specify any parameters.\n\
Note that changing the size of one terminal frame automatically affects all.")
508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523
  (parms)
     Lisp_Object parms;
{
  struct frame *f;
  Lisp_Object frame;

  if (selected_frame->output_method != output_termcap)
    error ("Not using an ASCII terminal now; cannot make a new ASCII frame");

  f = make_terminal_frame ();
  change_frame_size (f, FRAME_HEIGHT (selected_frame),
		     FRAME_WIDTH (selected_frame), 0, 0);
  remake_frame_glyphs (f);
  calculate_costs (f);
  XSETFRAME (frame, f);
  Fmodify_frame_parameters (frame, parms);
524
  f->face_alist = selected_frame->face_alist;
525 526
  return frame;
}
Jim Blandy's avatar
Jim Blandy committed
527

528
Lisp_Object
529
do_switch_frame (frame, no_enter, track)
Jim Blandy's avatar
Jim Blandy committed
530
     Lisp_Object frame, no_enter;
531
     int track;
Jim Blandy's avatar
Jim Blandy committed
532
{
533 534 535 536 537 538 539
  /* If FRAME is a switch-frame event, extract the frame we should
     switch to.  */
  if (CONSP (frame)
      && EQ (XCONS (frame)->car, Qswitch_frame)
      && CONSP (XCONS (frame)->cdr))
    frame = XCONS (XCONS (frame)->cdr)->car;

540 541 542 543 544 545
  /* This used to say CHECK_LIVE_FRAME, but apparently it's possible for
     a switch-frame event to arrive after a frame is no longer live,
     especially when deleting the initial frame during startup.  */
  CHECK_FRAME (frame, 0);
  if (! FRAME_LIVE_P (XFRAME (frame)))
    return Qnil;
Jim Blandy's avatar
Jim Blandy committed
546

Jim Blandy's avatar
Jim Blandy committed
547 548
  if (selected_frame == XFRAME (frame))
    return frame;
Jim Blandy's avatar
Jim Blandy committed
549

550 551 552
  /* This is too greedy; it causes inappropriate focus redirection
     that's hard to get rid of.  */
#if 0
553 554 555 556 557 558 559
  /* If a frame's focus has been redirected toward the currently
     selected frame, we should change the redirection to point to the
     newly selected frame.  This means that if the focus is redirected
     from a minibufferless frame to a surrogate minibuffer frame, we
     can use `other-window' to switch between all the frames using
     that minibuffer frame, and the focus redirection will follow us
     around.  */
560 561 562
  if (track)
    {
      Lisp_Object tail;
563

564 565 566
      for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr)
	{
	  Lisp_Object focus;
567

568
	  if (!FRAMEP (XCONS (tail)->car))
569
	    abort ();
570

571
	  focus = FRAME_FOCUS_FRAME (XFRAME (XCONS (tail)->car));
572

573
	  if (FRAMEP (focus) && XFRAME (focus) == selected_frame)
574 575 576 577 578
	    Fredirect_frame_focus (XCONS (tail)->car, frame);
	}
    }
#else /* ! 0 */
  /* Instead, apply it only to the frame we're pointing to.  */
579 580
#ifdef HAVE_WINDOW_SYSTEM
  if (track && (FRAME_WINDOW_P (XFRAME (frame))))
581 582 583
    {
      Lisp_Object focus, xfocus;

584
      xfocus = x_get_focus_frame (XFRAME (frame));
585 586 587 588 589 590 591 592 593
      if (FRAMEP (xfocus))
	{
	  focus = FRAME_FOCUS_FRAME (XFRAME (xfocus));
	  if (FRAMEP (focus) && XFRAME (focus) == selected_frame)
	    Fredirect_frame_focus (xfocus, frame);
	}
    }
#endif /* HAVE_X_WINDOWS */
#endif /* ! 0 */
594

Jim Blandy's avatar
Jim Blandy committed
595 596 597
  selected_frame = XFRAME (frame);
  if (! FRAME_MINIBUF_ONLY_P (selected_frame))
    last_nonminibuf_frame = selected_frame;
Jim Blandy's avatar
Jim Blandy committed
598

Jim Blandy's avatar
Jim Blandy committed
599
  Fselect_window (XFRAME (frame)->selected_window);
Jim Blandy's avatar
Jim Blandy committed
600

601
  /* We want to make sure that the next event generates a frame-switch
602
     event to the appropriate frame.  This seems kludgy to me, but
603 604 605 606
     before you take it out, make sure that evaluating something like
     (select-window (frame-root-window (new-frame))) doesn't end up
     with your typing being interpreted in the new frame instead of
     the one you're actually typing in.  */
607
  internal_last_event_frame = Qnil;
608

Jim Blandy's avatar
Jim Blandy committed
609
  return frame;
Jim Blandy's avatar
Jim Blandy committed
610 611
}

612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633
DEFUN ("select-frame", Fselect_frame, Sselect_frame, 1, 2, "e",
  "Select the frame FRAME.\n\
Subsequent editing commands apply to its selected window.\n\
The selection of FRAME lasts until the next time the user does\n\
something to select a different frame, or until the next time this\n\
function is called.")
  (frame, no_enter)
    Lisp_Object frame, no_enter;
{
  return do_switch_frame (frame, no_enter, 1);
}


DEFUN ("handle-switch-frame", Fhandle_switch_frame, Shandle_switch_frame, 1, 2, "e",
  "Handle a switch-frame event EVENT.\n\
Switch-frame events are usually bound to this function.\n\
A switch-frame event tells Emacs that the window manager has requested\n\
that the user's events be directed to the frame mentioned in the event.\n\
This function selects the selected window of the frame of EVENT.\n\
\n\
If EVENT is frame object, handle it as if it were a switch-frame event\n\
to that frame.")
634 635
  (event, no_enter)
     Lisp_Object event, no_enter;
636
{
637 638
  /* Preserve prefix arg that the command loop just cleared.  */
  current_kboard->Vprefix_arg = Vcurrent_prefix_arg;
639
  call1 (Vrun_hooks, Qmouse_leave_buffer_hook);
640
  return do_switch_frame (event, no_enter, 0);
641 642
}

643 644 645 646 647 648 649 650
DEFUN ("ignore-event", Fignore_event, Signore_event, 0, 0, "",
  "Do nothing, but preserve any prefix argument already specified.\n\
This is a suitable binding for iconify-frame and make-frame-visible.")
     ()
{
  current_kboard->Vprefix_arg = Vcurrent_prefix_arg;
  return Qnil;
}
651

Jim Blandy's avatar
Jim Blandy committed
652 653
DEFUN ("selected-frame", Fselected_frame, Sselected_frame, 0, 0, 0,
  "Return the frame that is now selected.")
Jim Blandy's avatar
Jim Blandy committed
654 655 656
  ()
{
  Lisp_Object tem;
657
  XSETFRAME (tem, selected_frame);
Jim Blandy's avatar
Jim Blandy committed
658 659
  return tem;
}
660

Jim Blandy's avatar
Jim Blandy committed
661 662
DEFUN ("window-frame", Fwindow_frame, Swindow_frame, 1, 1, 0,
  "Return the frame object that window WINDOW is on.")
Jim Blandy's avatar
Jim Blandy committed
663 664 665
  (window)
     Lisp_Object window;
{
666
  CHECK_LIVE_WINDOW (window, 0);
Jim Blandy's avatar
Jim Blandy committed
667
  return XWINDOW (window)->frame;
Jim Blandy's avatar
Jim Blandy committed
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
DEFUN ("frame-first-window", Fframe_first_window, Sframe_first_window, 0, 1, 0,
  "Returns the topmost, leftmost window of FRAME.\n\
If omitted, FRAME defaults to the currently selected frame.")
  (frame)
     Lisp_Object frame;
{
  Lisp_Object w;

  if (NILP (frame))
    w = selected_frame->root_window;
  else
    {
      CHECK_LIVE_FRAME (frame, 0);
      w = XFRAME (frame)->root_window;
    }
  while (NILP (XWINDOW (w)->buffer))
    {
      if (! NILP (XWINDOW (w)->hchild))
	w = XWINDOW (w)->hchild;
      else if (! NILP (XWINDOW (w)->vchild))
	w = XWINDOW (w)->vchild;
      else
	abort ();
    }
  return w;
}

697 698 699 700 701 702 703 704
DEFUN ("active-minibuffer-window", Factive_minibuffer_window,
       Sactive_minibuffer_window, 0, 0, 0,
       "Return the currently active minibuffer window, or nil if none.")
  ()
{
  return minibuf_level ? minibuf_window : Qnil;
}

Jim Blandy's avatar
Jim Blandy committed
705
DEFUN ("frame-root-window", Fframe_root_window, Sframe_root_window, 0, 1, 0,
706 707
       "Returns the root-window of FRAME.\n\
If omitted, FRAME defaults to the currently selected frame.")
Jim Blandy's avatar
Jim Blandy committed
708 709
  (frame)
     Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
710
{
Jim Blandy's avatar
Jim Blandy committed
711
  if (NILP (frame))
712
    XSETFRAME (frame, selected_frame);
Jim Blandy's avatar
Jim Blandy committed
713
  else
Jim Blandy's avatar
Jim Blandy committed
714
    CHECK_LIVE_FRAME (frame, 0);
Jim Blandy's avatar
Jim Blandy committed
715

Jim Blandy's avatar
Jim Blandy committed
716
  return XFRAME (frame)->root_window;
Jim Blandy's avatar
Jim Blandy committed
717 718
}

Jim Blandy's avatar
Jim Blandy committed
719 720
DEFUN ("frame-selected-window", Fframe_selected_window,
       Sframe_selected_window, 0, 1, 0,
721 722
  "Return the selected window of frame object FRAME.\n\
If omitted, FRAME defaults to the currently selected frame.")
Jim Blandy's avatar
Jim Blandy committed
723 724
  (frame)
     Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
725
{
Jim Blandy's avatar
Jim Blandy committed
726
  if (NILP (frame))
727
    XSETFRAME (frame, selected_frame);
Jim Blandy's avatar
Jim Blandy committed
728
  else
Jim Blandy's avatar
Jim Blandy committed
729
    CHECK_LIVE_FRAME (frame, 0);
Jim Blandy's avatar
Jim Blandy committed
730

Jim Blandy's avatar
Jim Blandy committed
731
  return XFRAME (frame)->selected_window;
Jim Blandy's avatar
Jim Blandy committed
732 733
}

734 735 736 737 738 739 740 741 742
DEFUN ("set-frame-selected-window", Fset_frame_selected_window,
       Sset_frame_selected_window, 2, 2, 0,
  "Set the selected window of frame object FRAME to WINDOW.\n\
If FRAME is nil, the selected frame is used.\n\
If FRAME is the selected frame, this makes WINDOW the selected window.")
  (frame, window)
     Lisp_Object frame, window;
{
  if (NILP (frame))
743
    XSETFRAME (frame, selected_frame);
744 745 746 747 748 749 750 751 752 753 754 755 756 757
  else
    CHECK_LIVE_FRAME (frame, 0);

  CHECK_LIVE_WINDOW (window, 1);

  if (! EQ (frame, WINDOW_FRAME (XWINDOW (window))))
    error ("In `set-frame-selected-window', WINDOW is not on FRAME");

  if (XFRAME (frame) == selected_frame)
    return Fselect_window (window);

  return XFRAME (frame)->selected_window = window;
}

Jim Blandy's avatar
Jim Blandy committed
758
DEFUN ("frame-list", Fframe_list, Sframe_list,
Jim Blandy's avatar
Jim Blandy committed
759
       0, 0, 0,
Jim Blandy's avatar
Jim Blandy committed
760
       "Return a list of all frames.")
Jim Blandy's avatar
Jim Blandy committed
761 762
  ()
{
Jim Blandy's avatar
Jim Blandy committed
763
  return Fcopy_sequence (Vframe_list);
Jim Blandy's avatar
Jim Blandy committed
764 765
}

Jim Blandy's avatar
Jim Blandy committed
766 767
/* Return the next frame in the frame list after FRAME.
   If MINIBUF is nil, exclude minibuffer-only frames.
768 769
   If MINIBUF is a window, include only its own frame
   and any frame now using that window as the minibuffer.
770
   If MINIBUF is `visible', include all visible frames.
771
   If MINIBUF is 0, include all visible and iconified frames.
772 773
   Otherwise, include all frames.  */

Jim Blandy's avatar
Jim Blandy committed
774
Lisp_Object
Jim Blandy's avatar
Jim Blandy committed
775 776
next_frame (frame, minibuf)
     Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
777
     Lisp_Object minibuf;
Jim Blandy's avatar
Jim Blandy committed
778 779 780 781
{
  Lisp_Object tail;
  int passed = 0;

Jim Blandy's avatar
Jim Blandy committed
782 783
  /* There must always be at least one frame in Vframe_list.  */
  if (! CONSP (Vframe_list))
Jim Blandy's avatar
Jim Blandy committed
784 785
    abort ();

Jim Blandy's avatar
Jim Blandy committed
786 787 788 789
  /* If this frame is dead, it won't be in Vframe_list, and we'll loop
     forever.  Forestall that.  */
  CHECK_LIVE_FRAME (frame, 0);

Jim Blandy's avatar
Jim Blandy committed
790
  while (1)
Jim Blandy's avatar
Jim Blandy committed
791
    for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr)
Jim Blandy's avatar
Jim Blandy committed
792
      {
793
	Lisp_Object f;
794

795
	f = XCONS (tail)->car;
796 797 798

	if (passed
	    && FRAME_KBOARD (XFRAME (f)) == FRAME_KBOARD (XFRAME (frame)))
Jim Blandy's avatar
Jim Blandy committed
799
	  {
800 801 802 803 804 805 806 807 808 809 810 811 812
	    /* Decide whether this frame is eligible to be returned.  */

	    /* If we've looped all the way around without finding any
	       eligible frames, return the original frame.  */
	    if (EQ (f, frame))
	      return f;

	    /* Let minibuf decide if this frame is acceptable.  */
	    if (NILP (minibuf))
	      {
		if (! FRAME_MINIBUF_ONLY_P (XFRAME (f)))
		  return f;
	      }
813 814 815 816 817 818
	    else if (EQ (minibuf, Qvisible))
	      {
		FRAME_SAMPLE_VISIBILITY (XFRAME (f));
		if (FRAME_VISIBLE_P (XFRAME (f)))
		  return f;
	      }
819 820 821 822 823 824 825
	    else if (XFASTINT (minibuf) == 0)
	      {
		FRAME_SAMPLE_VISIBILITY (XFRAME (f));
		if (FRAME_VISIBLE_P (XFRAME (f))
		    || FRAME_ICONIFIED_P (XFRAME (f)))
		  return f;
	      }
826
	    else if (WINDOWP (minibuf))
827
	      {
828 829 830 831 832 833
		if (EQ (FRAME_MINIBUF_WINDOW (XFRAME (f)), minibuf)
		    /* Check that F either is, or has forwarded its focus to,
		       MINIBUF's frame.  */
		    && (EQ (WINDOW_FRAME (XWINDOW (minibuf)), f)
			|| EQ (WINDOW_FRAME (XWINDOW (minibuf)),
			       FRAME_FOCUS_FRAME (XFRAME (f)))))
834 835 836
		  return f;
	      }
	    else
Jim Blandy's avatar
Jim Blandy committed
837
	      return f;
Jim Blandy's avatar
Jim Blandy committed
838
	  }
Jim Blandy's avatar
Jim Blandy committed
839

840
	if (EQ (frame, f))
Jim Blandy's avatar
Jim Blandy committed
841 842 843 844
	  passed++;
      }
}

Jim Blandy's avatar
Jim Blandy committed
845 846
/* Return the previous frame in the frame list before FRAME.
   If MINIBUF is nil, exclude minibuffer-only frames.
847 848
   If MINIBUF is a window, include only its own frame
   and any frame now using that window as the minibuffer.
849
   If MINIBUF is `visible', include all visible frames.
850
   If MINIBUF is 0, include all visible and iconified frames.
851 852
   Otherwise, include all frames.  */

Jim Blandy's avatar
Jim Blandy committed
853
Lisp_Object
Jim Blandy's avatar
Jim Blandy committed
854 855
prev_frame (frame, minibuf)
     Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
856
     Lisp_Object minibuf;
Jim Blandy's avatar
Jim Blandy committed
857 858 859 860
{
  Lisp_Object tail;
  Lisp_Object prev;

Jim Blandy's avatar
Jim Blandy committed
861 862
  /* There must always be at least one frame in Vframe_list.  */
  if (! CONSP (Vframe_list))
Jim Blandy's avatar
Jim Blandy committed
863 864
    abort ();

Jim Blandy's avatar
Jim Blandy committed
865
  prev = Qnil;
866
  for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr)
Jim Blandy's avatar
Jim Blandy committed
867
    {
868
      Lisp_Object f;
Jim Blandy's avatar
Jim Blandy committed
869

870
      f = XCONS (tail)->car;
871
      if (!FRAMEP (f))
872
	abort ();
Jim Blandy's avatar
Jim Blandy committed
873

874 875
      if (EQ (frame, f) && !NILP (prev))
	return prev;
Jim Blandy's avatar
Jim Blandy committed
876

877
      if (FRAME_KBOARD (XFRAME (f)) == FRAME_KBOARD (XFRAME (frame)))
878
	{
879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909
	  /* Decide whether this frame is eligible to be returned,
	     according to minibuf.  */
	  if (NILP (minibuf))
	    {
	      if (! FRAME_MINIBUF_ONLY_P (XFRAME (f)))
		prev = f;
	    }
	  else if (WINDOWP (minibuf))
	    {
	      if (EQ (FRAME_MINIBUF_WINDOW (XFRAME (f)), minibuf)
		  /* Check that F either is, or has forwarded its focus to,
		     MINIBUF's frame.  */
		  && (EQ (WINDOW_FRAME (XWINDOW (minibuf)), f)
		      || EQ (WINDOW_FRAME (XWINDOW (minibuf)),
			     FRAME_FOCUS_FRAME (XFRAME (f)))))
		prev = f;
	    }
	  else if (EQ (minibuf, Qvisible))
	    {
	      FRAME_SAMPLE_VISIBILITY (XFRAME (f));
	      if (FRAME_VISIBLE_P (XFRAME (f)))
		prev = f;
	    }
	  else if (XFASTINT (minibuf) == 0)
	    {
	      FRAME_SAMPLE_VISIBILITY (XFRAME (f));
	      if (FRAME_VISIBLE_P (XFRAME (f))
		  || FRAME_ICONIFIED_P (XFRAME (f)))
		prev = f;
	    }
	  else
910 911
	    prev = f;
	}
Jim Blandy's avatar
Jim Blandy committed
912
    }
913 914 915 916 917 918 919 920 921 922 923

  /* We've scanned the entire list.  */
  if (NILP (prev))
    /* We went through the whole frame list without finding a single
       acceptable frame.  Return the original frame.  */
    return frame;
  else
    /* There were no acceptable frames in the list before FRAME; otherwise,
       we would have returned directly from the loop.  Since PREV is the last
       acceptable frame in the list, return it.  */
    return prev;
Jim Blandy's avatar
Jim Blandy committed
924 925
}

926

Jim Blandy's avatar
Jim Blandy committed
927 928
DEFUN ("next-frame", Fnext_frame, Snext_frame, 0, 2, 0,
  "Return the next frame in the frame list after FRAME.\n\
929
It considers only frames on the same terminal as FRAME.\n\
930
By default, skip minibuffer-only frames.\n\
931
If omitted, FRAME defaults to the selected frame.\n\
932
If optional argument MINIFRAME is nil, exclude minibuffer-only frames.\n\
933
If MINIFRAME is a window, include only its own frame\n\
934
and any frame now using that window as the minibuffer.\n\
935
If MINIFRAME is `visible', include all visible frames.\n\
936
If MINIFRAME is 0, include all visible and iconified frames.\n\
937
Otherwise, include all frames.")
Jim Blandy's avatar
Jim Blandy committed
938
  (frame, miniframe)
939
     Lisp_Object frame, miniframe;
Jim Blandy's avatar
Jim Blandy committed
940 941 942
{
  Lisp_Object tail;

Jim Blandy's avatar
Jim Blandy committed
943
  if (NILP (frame))
944
    XSETFRAME (frame, selected_frame);
Jim Blandy's avatar
Jim Blandy committed
945
  else
Jim Blandy's avatar
Jim Blandy committed
946
    CHECK_LIVE_FRAME (frame, 0);
Jim Blandy's avatar
Jim Blandy committed
947

Jim Blandy's avatar
Jim Blandy committed
948
  return next_frame (frame, miniframe);
Jim Blandy's avatar
Jim Blandy committed
949
}
Jim Blandy's avatar
Jim Blandy committed
950

951 952
DEFUN ("previous-frame", Fprevious_frame, Sprevious_frame, 0, 2, 0,
  "Return the previous frame in the frame list before FRAME.\n\
953
It considers only frames on the same terminal as FRAME.\n\
954 955 956
By default, skip minibuffer-only frames.\n\
If omitted, FRAME defaults to the selected frame.\n\
If optional argument MINIFRAME is nil, exclude minibuffer-only frames.\n\
957
If MINIFRAME is a window, include only its own frame\n\
958
and any frame now using that window as the minibuffer.\n\
959
If MINIFRAME is `visible', include all visible frames.\n\
960
If MINIFRAME is 0, include all visible and iconified frames.\n\
961
Otherwise, include all frames.")
962 963 964 965 966 967
  (frame, miniframe)
     Lisp_Object frame, miniframe;
{
  Lisp_Object tail;

  if (NILP (frame))
968
    XSETFRAME (frame, selected_frame);
969 970 971 972 973
  else
    CHECK_LIVE_FRAME (frame, 0);

  return prev_frame (frame, miniframe);
}
Jim Blandy's avatar
Jim Blandy committed
974

975 976 977
/* Return 1 if it is ok to delete frame F;
   0 if all frames aside from F are invisible.
   (Exception: if F is the terminal frame, and we are using X, return 1.)  */
Jim Blandy's avatar
Jim Blandy committed
978

979
int
980 981 982 983 984 985
other_visible_frames (f)
     FRAME_PTR f;
{
  /* We know the selected frame is visible,
     so if F is some other frame, it can't be the sole visible one.  */
  if (f == selected_frame)
986 987 988 989 990 991 992 993
    {
      Lisp_Object frames;
      int count = 0;

      for (frames = Vframe_list;
	   CONSP (frames);
	   frames = XCONS (frames)->cdr)
	{
994
	  Lisp_Object this;
995

996
	  this = XCONS (frames)->car;
997 998 999
	  /* Verify that the frame's window still exists
	     and we can still talk to it.  And note any recent change
	     in visibility.  */
1000 1001
#ifdef HAVE_WINDOW_SYSTEM
	  if (FRAME_WINDOW_P (XFRAME (this)))
1002
	    {
1003
	      x_sync (XFRAME (this));
1004 1005 1006 1007
	      FRAME_SAMPLE_VISIBILITY (XFRAME (this));
	    }
#endif

1008 1009 1010 1011
	  if (FRAME_VISIBLE_P (XFRAME (this))
	      || FRAME_ICONIFIED_P (XFRAME (this))
	      /* Allow deleting the terminal frame when at least
		 one X frame exists!  */
1012
	      || (FRAME_WINDOW_P (XFRAME (this)) && !FRAME_WINDOW_P (f)))
1013 1014
	    count++;
	}
1015
      return count > 1;
1016
    }
1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029
  return 1;
}

DEFUN ("delete-frame", Fdelete_frame, Sdelete_frame, 0, 2, "",
  "Delete FRAME, permanently eliminating it from use.\n\
If omitted, FRAME defaults to the selected frame.\n\
A frame may not be deleted if its minibuffer is used by other frames.\n\
Normally, you may not delete a frame if all other frames are invisible,\n\
but if the second optional argument FORCE is non-nil, you may do so.")
  (frame, force)
     Lisp_Object frame, force;
{
  struct frame *f;
1030
  int minibuffer_selected;
1031 1032 1033 1034

  if (EQ (frame, Qnil))
    {
      f = selected_frame;
1035
      XSETFRAME (frame, f);
1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047
    }
  else
    {
      CHECK_FRAME (frame, 0);
      f = XFRAME (frame);
    }

  if (! FRAME_LIVE_P (f))
    return Qnil;

  if (NILP (force) && !other_visible_frames (f))
    error ("Attempt to delete the sole visible or iconified frame");
Jim Blandy's avatar
Jim Blandy committed
1048

Jim Blandy's avatar
Jim Blandy committed
1049 1050
  /* Does this frame have a minibuffer, and is it the surrogate
     minibuffer for any other frame?  */
1051
  if (FRAME_HAS_MINIBUF_P (XFRAME (frame)))
Jim Blandy's avatar
Jim Blandy committed
1052
    {