frame.c 65.3 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 18 19
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
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */

20
#include <config.h>
21 22

#include <stdio.h>
23 24
#include "lisp.h"
#include "frame.h"
25
#include "termhooks.h"
26
#include "window.h"
Morten Welinder's avatar
Morten Welinder committed
27 28 29
#ifdef MSDOS
#include "msdos.h"
#endif
Jim Blandy's avatar
Jim Blandy committed
30

Jim Blandy's avatar
Jim Blandy committed
31
#ifdef MULTI_FRAME
Jim Blandy's avatar
Jim Blandy committed
32

Jim Blandy's avatar
Jim Blandy committed
33
#include "buffer.h"
Jim Blandy's avatar
Jim Blandy committed
34

35 36 37 38
/* These help us bind and responding to switch-frame events.  */
#include "commands.h"
#include "keyboard.h"

Jim Blandy's avatar
Jim Blandy committed
39
Lisp_Object Vemacs_iconified;
Jim Blandy's avatar
Jim Blandy committed
40 41 42 43
Lisp_Object Vframe_list;
Lisp_Object Vterminal_frame;
Lisp_Object Vdefault_minibuffer_frame;
Lisp_Object Vdefault_frame_alist;
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

/* 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)))))
  */        

/*&&& symbols declared here &&&*/
Lisp_Object Qframep;
Jim Blandy's avatar
Jim Blandy committed
80
Lisp_Object Qframe_live_p;
81 82
Lisp_Object Qheight;
Lisp_Object Qicon;
Jim Blandy's avatar
Jim Blandy committed
83
Lisp_Object Qminibuffer;
84 85 86 87
Lisp_Object Qmodeline;
Lisp_Object Qname;
Lisp_Object Qonly;
Lisp_Object Qunsplittable;
88
Lisp_Object Qmenu_bar_lines;
89 90
Lisp_Object Qwidth;
Lisp_Object Qx;
91
Lisp_Object Qvisible;
92
Lisp_Object Qbuffer_predicate;
Jim Blandy's avatar
Jim Blandy committed
93 94 95

extern Lisp_Object Vminibuffer_list;
extern Lisp_Object get_minibuffer ();
96 97
extern Lisp_Object Fhandle_switch_frame ();
extern Lisp_Object Fredirect_frame_focus ();
Jim Blandy's avatar
Jim Blandy committed
98

Jim Blandy's avatar
Jim Blandy committed
99 100 101
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
102 103
`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
104
See also `frame-live-p'.")
Jim Blandy's avatar
Jim Blandy committed
105 106
  (object)
     Lisp_Object object;
Jim Blandy's avatar
Jim Blandy committed
107
{
108
  if (!FRAMEP (object))
Jim Blandy's avatar
Jim Blandy committed
109
    return Qnil;
Jim Blandy's avatar
Jim Blandy committed
110
  switch (XFRAME (object)->output_method)
Jim Blandy's avatar
Jim Blandy committed
111 112 113 114
    {
    case output_termcap:
      return Qt;
    case output_x_window:
115
      return Qx;
Morten Welinder's avatar
Morten Welinder committed
116
      /* The `pc' case is in the Fframep below.  */
Jim Blandy's avatar
Jim Blandy committed
117 118 119 120 121
    default:
      abort ();
    }
}

Jim Blandy's avatar
Jim Blandy committed
122
DEFUN ("frame-live-p", Fframe_live_p, Sframe_live_p, 1, 1, 0,
Jim Blandy's avatar
Jim Blandy committed
123 124 125 126 127
  "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
128 129 130
  (object)
     Lisp_Object object;
{
Jim Blandy's avatar
Jim Blandy committed
131 132 133
  return ((FRAMEP (object)
	   && FRAME_LIVE_P (XFRAME (object)))
	  ? Fframep (object)
Jim Blandy's avatar
Jim Blandy committed
134 135 136
	  : Qnil);
}

Jim Blandy's avatar
Jim Blandy committed
137 138
struct frame *
make_frame (mini_p)
Jim Blandy's avatar
Jim Blandy committed
139 140
     int mini_p;
{
Jim Blandy's avatar
Jim Blandy committed
141 142
  Lisp_Object frame;
  register struct frame *f;
Jim Blandy's avatar
Jim Blandy committed
143 144
  register Lisp_Object root_window;
  register Lisp_Object mini_window;
145 146 147 148 149 150 151 152 153
  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
154 155 156 157 158 159

  f->cursor_x = 0;
  f->cursor_y = 0;
  f->current_glyphs = 0;
  f->desired_glyphs = 0;
  f->visible = 0;
160
  f->async_visible = 0;
Jim Blandy's avatar
Jim Blandy committed
161 162
  f->display.nothing = 0;
  f->iconified = 0;
163
  f->async_iconified = 0;
Jim Blandy's avatar
Jim Blandy committed
164 165 166 167 168 169
  f->wants_modeline = 1;
  f->auto_raise = 0;
  f->auto_lower = 0;
  f->no_split = 0;
  f->garbaged = 0;
  f->has_minibuffer = mini_p;
170
  f->focus_frame = Qnil;
171
  f->explicit_name = 0;
172 173
  f->can_have_scroll_bars = 0;
  f->has_vertical_scroll_bars = 0;
Jim Blandy's avatar
Jim Blandy committed
174
  f->param_alist = Qnil;
175 176
  f->scroll_bars = Qnil;
  f->condemned_scroll_bars = Qnil;
177
  f->face_alist = Qnil;
178
  f->menu_bar_items = Qnil;
179 180
  f->menu_bar_vector = Qnil;
  f->menu_bar_items_used = 0;
181
  f->buffer_predicate = Qnil;
182 183 184
#ifdef MULTI_KBOARD
  f->kboard = initial_kboard;
#endif
185
  f->namebuf = 0;
Jim Blandy's avatar
Jim Blandy committed
186

187
  root_window = make_window ();
Jim Blandy's avatar
Jim Blandy committed
188 189
  if (mini_p)
    {
190
      mini_window = make_window ();
Jim Blandy's avatar
Jim Blandy committed
191 192 193
      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
194 195
      XWINDOW (mini_window)->frame = frame;
      f->minibuffer_window = mini_window;
Jim Blandy's avatar
Jim Blandy committed
196 197 198 199 200
    }
  else
    {
      mini_window = Qnil;
      XWINDOW (root_window)->next = Qnil;
Jim Blandy's avatar
Jim Blandy committed
201
      f->minibuffer_window = Qnil;
Jim Blandy's avatar
Jim Blandy committed
202 203
    }

Jim Blandy's avatar
Jim Blandy committed
204
  XWINDOW (root_window)->frame = frame;
Jim Blandy's avatar
Jim Blandy committed
205 206 207

  /* 10 is arbitrary,
     just so that there is "something there."
Jim Blandy's avatar
Jim Blandy committed
208
     Correct size will be set up later with change_frame_size.  */
Jim Blandy's avatar
Jim Blandy committed
209

Jim Blandy's avatar
Jim Blandy committed
210 211
  f->width = 10;
  f->height = 10;
Jim Blandy's avatar
Jim Blandy committed
212

213 214
  XSETFASTINT (XWINDOW (root_window)->width, 10);
  XSETFASTINT (XWINDOW (root_window)->height, (mini_p ? 9 : 10));
Jim Blandy's avatar
Jim Blandy committed
215 216 217

  if (mini_p)
    {
218 219 220
      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
221 222
    }

Jim Blandy's avatar
Jim Blandy committed
223
  /* Choose a buffer for the frame's root window.  */
Jim Blandy's avatar
Jim Blandy committed
224 225 226 227 228 229 230 231
  {
    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] == ' ')
232
      buf = Fother_buffer (buf, Qnil);
Jim Blandy's avatar
Jim Blandy committed
233 234 235
    Fset_window_buffer (root_window, buf);
  }

Jim Blandy's avatar
Jim Blandy committed
236 237 238 239
  if (mini_p)
    {
      XWINDOW (mini_window)->buffer = Qt;
      Fset_window_buffer (mini_window,
Jim Blandy's avatar
Jim Blandy committed
240
			  (NILP (Vminibuffer_list)
Jim Blandy's avatar
Jim Blandy committed
241 242 243 244
			   ? get_minibuffer (0)
			   : Fcar (Vminibuffer_list)));
    }

Jim Blandy's avatar
Jim Blandy committed
245 246
  f->root_window = root_window;
  f->selected_window = root_window;
Jim Blandy's avatar
Jim Blandy committed
247 248
  /* Make sure this window seems more recently used than
     a newly-created, never-selected window.  */
249
  XSETFASTINT (XWINDOW (f->selected_window)->use_time, ++window_select_count);
Jim Blandy's avatar
Jim Blandy committed
250

Jim Blandy's avatar
Jim Blandy committed
251
  return f;
Jim Blandy's avatar
Jim Blandy committed
252 253
}

Jim Blandy's avatar
Jim Blandy committed
254
/* Make a frame using a separate minibuffer window on another frame.
Jim Blandy's avatar
Jim Blandy committed
255 256 257
   MINI_WINDOW is the minibuffer window to use.  nil means use the
   default (the global minibuffer).  */

Jim Blandy's avatar
Jim Blandy committed
258 259
struct frame *
make_frame_without_minibuffer (mini_window)
Jim Blandy's avatar
Jim Blandy committed
260 261
     register Lisp_Object mini_window;
{
Jim Blandy's avatar
Jim Blandy committed
262
  register struct frame *f;
Jim Blandy's avatar
Jim Blandy committed
263 264

  /* Choose the minibuffer window to use.  */
Jim Blandy's avatar
Jim Blandy committed
265
  if (NILP (mini_window))
Jim Blandy's avatar
Jim Blandy committed
266
    {
267
      if (!FRAMEP (Vdefault_minibuffer_frame))
Jim Blandy's avatar
Jim Blandy committed
268 269 270 271
	error ("default-minibuffer-frame must be set when creating minibufferless frames");
      if (! FRAME_LIVE_P (XFRAME (Vdefault_minibuffer_frame)))
	error ("default-minibuffer-frame must be a live frame");
      mini_window = XFRAME (Vdefault_minibuffer_frame)->minibuffer_window;
Jim Blandy's avatar
Jim Blandy committed
272 273 274
    }
  else
    {
275
      CHECK_LIVE_WINDOW (mini_window, 0);
Jim Blandy's avatar
Jim Blandy committed
276 277
    }

Jim Blandy's avatar
Jim Blandy committed
278 279
  /* Make a frame containing just a root window.  */
  f = make_frame (0);
Jim Blandy's avatar
Jim Blandy committed
280 281

  /* Install the chosen minibuffer window, with proper buffer.  */
Jim Blandy's avatar
Jim Blandy committed
282
  f->minibuffer_window = mini_window;
Jim Blandy's avatar
Jim Blandy committed
283
  Fset_window_buffer (mini_window,
Jim Blandy's avatar
Jim Blandy committed
284
		      (NILP (Vminibuffer_list)
Jim Blandy's avatar
Jim Blandy committed
285 286
		       ? get_minibuffer (0)
		       : Fcar (Vminibuffer_list)));
Jim Blandy's avatar
Jim Blandy committed
287
  return f;
Jim Blandy's avatar
Jim Blandy committed
288 289
}

Jim Blandy's avatar
Jim Blandy committed
290
/* Make a frame containing only a minibuffer window.  */
Jim Blandy's avatar
Jim Blandy committed
291

Jim Blandy's avatar
Jim Blandy committed
292 293
struct frame *
make_minibuffer_frame ()
Jim Blandy's avatar
Jim Blandy committed
294
{
Jim Blandy's avatar
Jim Blandy committed
295
  /* First make a frame containing just a root window, no minibuffer.  */
Jim Blandy's avatar
Jim Blandy committed
296

Jim Blandy's avatar
Jim Blandy committed
297
  register struct frame *f = make_frame (0);
Jim Blandy's avatar
Jim Blandy committed
298
  register Lisp_Object mini_window;
Jim Blandy's avatar
Jim Blandy committed
299
  register Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
300

301
  XSETFRAME (frame, f);
Jim Blandy's avatar
Jim Blandy committed
302

303
  f->auto_raise = 0;
Jim Blandy's avatar
Jim Blandy committed
304 305 306 307
  f->auto_lower = 0;
  f->no_split = 1;
  f->wants_modeline = 0;
  f->has_minibuffer = 1;
Jim Blandy's avatar
Jim Blandy committed
308 309 310 311 312

  /* 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
313
  mini_window = f->minibuffer_window = f->root_window;
Jim Blandy's avatar
Jim Blandy committed
314 315
  XWINDOW (mini_window)->mini_p = Qt;
  XWINDOW (mini_window)->next = Qnil;
316
  XWINDOW (mini_window)->prev = Qnil;
Jim Blandy's avatar
Jim Blandy committed
317
  XWINDOW (mini_window)->frame = frame;
Jim Blandy's avatar
Jim Blandy committed
318 319 320 321

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

  Fset_window_buffer (mini_window,
Jim Blandy's avatar
Jim Blandy committed
322
		      (NILP (Vminibuffer_list)
Jim Blandy's avatar
Jim Blandy committed
323 324
		       ? get_minibuffer (0)
		       : Fcar (Vminibuffer_list)));
Jim Blandy's avatar
Jim Blandy committed
325
  return f;
Jim Blandy's avatar
Jim Blandy committed
326 327
}

Jim Blandy's avatar
Jim Blandy committed
328
/* Construct a frame that refers to the terminal (stdin and stdout).  */
Jim Blandy's avatar
Jim Blandy committed
329

330 331
static int terminal_frame_count;

Jim Blandy's avatar
Jim Blandy committed
332 333
struct frame *
make_terminal_frame ()
Jim Blandy's avatar
Jim Blandy committed
334
{
Jim Blandy's avatar
Jim Blandy committed
335
  register struct frame *f;
336
  Lisp_Object frame;
337 338
  char name[20];

339 340 341 342 343
#ifdef MULTI_KBOARD
  if (!initial_kboard)
    {
      initial_kboard = (KBOARD *) xmalloc (sizeof (KBOARD));
      init_kboard (initial_kboard);
344 345
      initial_kboard->next_kboard = all_kboards;
      all_kboards = initial_kboard;
346 347 348
    }
#endif

349 350 351
  /* The first call must initialize Vframe_list.  */
  if (! (NILP (Vframe_list) || CONSP (Vframe_list)))
    Vframe_list = Qnil;
Jim Blandy's avatar
Jim Blandy committed
352 353

  f = make_frame (1);
354

355
  XSETFRAME (frame, f);
356 357
  Vframe_list = Fcons (frame, Vframe_list);

358
  terminal_frame_count++;
359 360 361 362 363 364 365 366 367
  if (terminal_frame_count == 1)
    {
      f->name = build_string ("Emacs");
    }
  else
    {
      sprintf (name, "Emacs-%d", terminal_frame_count);
      f->name = build_string (name);
    }
368 369 370 371

  f->visible = 1;		/* FRAME_SET_VISIBLE wd set frame_garbaged. */
  f->async_visible = 1;		/* Don't let visible be cleared later. */
  f->display.nothing = 1;	/* Nonzero means frame isn't deleted.  */
372
  XSETFRAME (Vterminal_frame, f);
Jim Blandy's avatar
Jim Blandy committed
373
  return f;
Jim Blandy's avatar
Jim Blandy committed
374
}
375 376

DEFUN ("make-terminal-frame", Fmake_terminal_frame, Smake_terminal_frame,
377 378 379 380 381 382
       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.")
383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400
  (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);
  return frame;
}
Jim Blandy's avatar
Jim Blandy committed
401

402 403
static Lisp_Object
do_switch_frame (frame, no_enter, track)
Jim Blandy's avatar
Jim Blandy committed
404
     Lisp_Object frame, no_enter;
405
     int track;
Jim Blandy's avatar
Jim Blandy committed
406
{
407 408 409 410 411 412 413
  /* 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;

414 415 416 417 418 419
  /* 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
420

Jim Blandy's avatar
Jim Blandy committed
421 422
  if (selected_frame == XFRAME (frame))
    return frame;
Jim Blandy's avatar
Jim Blandy committed
423

424 425 426
  /* This is too greedy; it causes inappropriate focus redirection
     that's hard to get rid of.  */
#if 0
427 428 429 430 431 432 433
  /* 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.  */
434 435 436
  if (track)
    {
      Lisp_Object tail;
437

438 439 440
      for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr)
	{
	  Lisp_Object focus;
441

442
	  if (!FRAMEP (XCONS (tail)->car))
443
	    abort ();
444

445
	  focus = FRAME_FOCUS_FRAME (XFRAME (XCONS (tail)->car));
446

447
	  if (FRAMEP (focus) && XFRAME (focus) == selected_frame)
448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467
	    Fredirect_frame_focus (XCONS (tail)->car, frame);
	}
    }
#else /* ! 0 */
  /* Instead, apply it only to the frame we're pointing to.  */
#ifdef HAVE_X_WINDOWS
  if (track)
    {
      Lisp_Object focus, xfocus;

      xfocus = x_get_focus_frame ();
      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 */
468

469 470 471 472 473 474 475 476
  if (FRAME_TERMCAP_P (XFRAME (frame)))
    {
      /* Since frames on an ASCII terminal share the same display area,
	 switching means we must redisplay the whole thing.  */
      windows_or_buffers_changed++;
      SET_FRAME_GARBAGED (XFRAME (frame));
    }

Jim Blandy's avatar
Jim Blandy committed
477 478 479
  selected_frame = XFRAME (frame);
  if (! FRAME_MINIBUF_ONLY_P (selected_frame))
    last_nonminibuf_frame = selected_frame;
Jim Blandy's avatar
Jim Blandy committed
480

Jim Blandy's avatar
Jim Blandy committed
481 482
  Fselect_window (XFRAME (frame)->selected_window);
  choose_minibuf_frame ();
Jim Blandy's avatar
Jim Blandy committed
483

484
  /* We want to make sure that the next event generates a frame-switch
485
     event to the appropriate frame.  This seems kludgy to me, but
486 487 488 489
     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.  */
490
  internal_last_event_frame = Qnil;
491

Jim Blandy's avatar
Jim Blandy committed
492
  return frame;
Jim Blandy's avatar
Jim Blandy committed
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
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.")
  (frame, no_enter)
     Lisp_Object frame, no_enter;
{
  return do_switch_frame (frame, no_enter, 0);
}


Jim Blandy's avatar
Jim Blandy committed
524 525
DEFUN ("selected-frame", Fselected_frame, Sselected_frame, 0, 0, 0,
  "Return the frame that is now selected.")
Jim Blandy's avatar
Jim Blandy committed
526 527 528
  ()
{
  Lisp_Object tem;
529
  XSETFRAME (tem, selected_frame);
Jim Blandy's avatar
Jim Blandy committed
530 531
  return tem;
}
532

Jim Blandy's avatar
Jim Blandy committed
533 534
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
535 536 537
  (window)
     Lisp_Object window;
{
538
  CHECK_LIVE_WINDOW (window, 0);
Jim Blandy's avatar
Jim Blandy committed
539
  return XWINDOW (window)->frame;
Jim Blandy's avatar
Jim Blandy committed
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
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;
}

569 570 571 572 573 574 575 576
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
577
DEFUN ("frame-root-window", Fframe_root_window, Sframe_root_window, 0, 1, 0,
578 579
       "Returns the root-window of FRAME.\n\
If omitted, FRAME defaults to the currently selected frame.")
Jim Blandy's avatar
Jim Blandy committed
580 581
  (frame)
     Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
582
{
Jim Blandy's avatar
Jim Blandy committed
583
  if (NILP (frame))
584
    XSETFRAME (frame, selected_frame);
Jim Blandy's avatar
Jim Blandy committed
585
  else
Jim Blandy's avatar
Jim Blandy committed
586
    CHECK_LIVE_FRAME (frame, 0);
Jim Blandy's avatar
Jim Blandy committed
587

Jim Blandy's avatar
Jim Blandy committed
588
  return XFRAME (frame)->root_window;
Jim Blandy's avatar
Jim Blandy committed
589 590
}

Jim Blandy's avatar
Jim Blandy committed
591 592
DEFUN ("frame-selected-window", Fframe_selected_window,
       Sframe_selected_window, 0, 1, 0,
593 594
  "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
595 596
  (frame)
     Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
597
{
Jim Blandy's avatar
Jim Blandy committed
598
  if (NILP (frame))
599
    XSETFRAME (frame, selected_frame);
Jim Blandy's avatar
Jim Blandy committed
600
  else
Jim Blandy's avatar
Jim Blandy committed
601
    CHECK_LIVE_FRAME (frame, 0);
Jim Blandy's avatar
Jim Blandy committed
602

Jim Blandy's avatar
Jim Blandy committed
603
  return XFRAME (frame)->selected_window;
Jim Blandy's avatar
Jim Blandy committed
604 605
}

606 607 608 609 610 611 612 613 614
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))
615
    XSETFRAME (frame, selected_frame);
616 617 618 619 620 621 622 623 624 625 626 627 628 629
  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
630
DEFUN ("frame-list", Fframe_list, Sframe_list,
Jim Blandy's avatar
Jim Blandy committed
631
       0, 0, 0,
Jim Blandy's avatar
Jim Blandy committed
632
       "Return a list of all frames.")
Jim Blandy's avatar
Jim Blandy committed
633 634
  ()
{
Jim Blandy's avatar
Jim Blandy committed
635
  return Fcopy_sequence (Vframe_list);
Jim Blandy's avatar
Jim Blandy committed
636 637
}

Jim Blandy's avatar
Jim Blandy committed
638 639
/* Return the next frame in the frame list after FRAME.
   If MINIBUF is nil, exclude minibuffer-only frames.
640 641
   If MINIBUF is a window, include only its own frame
   and any frame now using that window as the minibuffer.
642
   If MINIBUF is `visible', include all visible frames.
643
   If MINIBUF is 0, include all visible and iconified frames.
644 645
   Otherwise, include all frames.  */

Jim Blandy's avatar
Jim Blandy committed
646
Lisp_Object
Jim Blandy's avatar
Jim Blandy committed
647 648
next_frame (frame, minibuf)
     Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
649
     Lisp_Object minibuf;
Jim Blandy's avatar
Jim Blandy committed
650 651 652 653
{
  Lisp_Object tail;
  int passed = 0;

Jim Blandy's avatar
Jim Blandy committed
654 655
  /* There must always be at least one frame in Vframe_list.  */
  if (! CONSP (Vframe_list))
Jim Blandy's avatar
Jim Blandy committed
656 657
    abort ();

Jim Blandy's avatar
Jim Blandy committed
658 659 660 661
  /* 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
662
  while (1)
Jim Blandy's avatar
Jim Blandy committed
663
    for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr)
Jim Blandy's avatar
Jim Blandy committed
664
      {
665
	Lisp_Object f;
666

667
	f = XCONS (tail)->car;
Jim Blandy's avatar
Jim Blandy committed
668
	if (passed)
Jim Blandy's avatar
Jim Blandy committed
669
	  {
670 671 672 673 674 675 676 677 678 679 680 681 682
	    /* 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;
	      }
683 684 685 686 687 688
	    else if (EQ (minibuf, Qvisible))
	      {
		FRAME_SAMPLE_VISIBILITY (XFRAME (f));
		if (FRAME_VISIBLE_P (XFRAME (f)))
		  return f;
	      }
689 690 691 692 693 694 695
	    else if (XFASTINT (minibuf) == 0)
	      {
		FRAME_SAMPLE_VISIBILITY (XFRAME (f));
		if (FRAME_VISIBLE_P (XFRAME (f))
		    || FRAME_ICONIFIED_P (XFRAME (f)))
		  return f;
	      }
696
	    else if (WINDOWP (minibuf))
697
	      {
698 699 700 701 702 703
		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)))))
704 705 706
		  return f;
	      }
	    else
Jim Blandy's avatar
Jim Blandy committed
707
	      return f;
Jim Blandy's avatar
Jim Blandy committed
708
	  }
Jim Blandy's avatar
Jim Blandy committed
709

710
	if (EQ (frame, f))
Jim Blandy's avatar
Jim Blandy committed
711 712 713 714
	  passed++;
      }
}

Jim Blandy's avatar
Jim Blandy committed
715 716
/* Return the previous frame in the frame list before FRAME.
   If MINIBUF is nil, exclude minibuffer-only frames.
717 718
   If MINIBUF is a window, include only its own frame
   and any frame now using that window as the minibuffer.
719
   If MINIBUF is `visible', include all visible frames.
720
   If MINIBUF is 0, include all visible and iconified frames.
721 722
   Otherwise, include all frames.  */

Jim Blandy's avatar
Jim Blandy committed
723
Lisp_Object
Jim Blandy's avatar
Jim Blandy committed
724 725
prev_frame (frame, minibuf)
     Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
726
     Lisp_Object minibuf;
Jim Blandy's avatar
Jim Blandy committed
727 728 729 730
{
  Lisp_Object tail;
  Lisp_Object prev;

Jim Blandy's avatar
Jim Blandy committed
731 732
  /* There must always be at least one frame in Vframe_list.  */
  if (! CONSP (Vframe_list))
Jim Blandy's avatar
Jim Blandy committed
733 734
    abort ();

Jim Blandy's avatar
Jim Blandy committed
735
  prev = Qnil;
736
  for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr)
Jim Blandy's avatar
Jim Blandy committed
737
    {
738
      Lisp_Object f;
Jim Blandy's avatar
Jim Blandy committed
739

740
      f = XCONS (tail)->car;
741
      if (!FRAMEP (f))
742
	abort ();
Jim Blandy's avatar
Jim Blandy committed
743

744 745
      if (EQ (frame, f) && !NILP (prev))
	return prev;
Jim Blandy's avatar
Jim Blandy committed
746

747 748 749 750 751 752
      /* Decide whether this frame is eligible to be returned,
	 according to minibuf.  */
      if (NILP (minibuf))
	{
	  if (! FRAME_MINIBUF_ONLY_P (XFRAME (f)))
	    prev = f;
Jim Blandy's avatar
Jim Blandy committed
753
	}
Richard M. Stallman's avatar
Richard M. Stallman committed
754
      else if (WINDOWP (minibuf))
755
	{
756 757 758 759 760 761
	  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)))))
762 763
	    prev = f;
	}
764 765 766 767 768 769
      else if (EQ (minibuf, Qvisible))
	{
	  FRAME_SAMPLE_VISIBILITY (XFRAME (f));
	  if (FRAME_VISIBLE_P (XFRAME (f)))
	    prev = f;
	}
Richard M. Stallman's avatar
Richard M. Stallman committed
770
      else if (XFASTINT (minibuf) == 0)
771 772 773 774 775 776
	{
	  FRAME_SAMPLE_VISIBILITY (XFRAME (f));
	  if (FRAME_VISIBLE_P (XFRAME (f))
	      || FRAME_ICONIFIED_P (XFRAME (f)))
	    prev = f;
	}
777 778
      else
	prev = f;
Jim Blandy's avatar
Jim Blandy committed
779
    }
780 781 782 783 784 785 786 787 788 789 790

  /* 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
791 792
}

793

Jim Blandy's avatar
Jim Blandy committed
794 795
DEFUN ("next-frame", Fnext_frame, Snext_frame, 0, 2, 0,
  "Return the next frame in the frame list after FRAME.\n\
796
By default, skip minibuffer-only frames.\n\
797
If omitted, FRAME defaults to the selected frame.\n\
798
If optional argument MINIFRAME is nil, exclude minibuffer-only frames.\n\
799 800
If MINIBUF is a window, include only its own frame\n\
and any frame now using that window as the minibuffer.\n\
801
If MINIFRAME is `visible', include all visible frames.\n\
802
If MINIBUF is 0, include all visible and iconified frames.\n\
803
Otherwise, include all frames.")
Jim Blandy's avatar
Jim Blandy committed
804
  (frame, miniframe)
805
     Lisp_Object frame, miniframe;
Jim Blandy's avatar
Jim Blandy committed
806 807 808
{
  Lisp_Object tail;

Jim Blandy's avatar
Jim Blandy committed
809
  if (NILP (frame))
810
    XSETFRAME (frame, selected_frame);
Jim Blandy's avatar
Jim Blandy committed
811
  else
Jim Blandy's avatar
Jim Blandy committed
812
    CHECK_LIVE_FRAME (frame, 0);
Jim Blandy's avatar
Jim Blandy committed
813

Jim Blandy's avatar
Jim Blandy committed
814
  return next_frame (frame, miniframe);
Jim Blandy's avatar
Jim Blandy committed
815
}
Jim Blandy's avatar
Jim Blandy committed
816

817 818 819 820 821
DEFUN ("previous-frame", Fprevious_frame, Sprevious_frame, 0, 2, 0,
  "Return the previous frame in the frame list before FRAME.\n\
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\
822 823
If MINIBUF is a window, include only its own frame\n\
and any frame now using that window as the minibuffer.\n\
824
If MINIFRAME is `visible', include all visible frames.\n\
825
If MINIBUF is 0, include all visible and iconified frames.\n\
826
Otherwise, include all frames.")
827 828 829 830 831 832
  (frame, miniframe)
     Lisp_Object frame, miniframe;
{
  Lisp_Object tail;

  if (NILP (frame))
833
    XSETFRAME (frame, selected_frame);
834 835 836 837 838
  else
    CHECK_LIVE_FRAME (frame, 0);

  return prev_frame (frame, miniframe);
}
Jim Blandy's avatar
Jim Blandy committed
839

840 841 842
/* 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
843

844
int
845 846 847 848 849 850
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)
851 852 853 854 855 856 857 858
    {
      Lisp_Object frames;
      int count = 0;

      for (frames = Vframe_list;
	   CONSP (frames);
	   frames = XCONS (frames)->cdr)
	{
859
	  Lisp_Object this;
860

861
	  this = XCONS (frames)->car;
862 863 864
	  /* Verify that the frame's window still exists
	     and we can still talk to it.  And note any recent change
	     in visibility.  */
865 866 867
#ifdef HAVE_X_WINDOWS
	  if (FRAME_X_P (XFRAME (this)))
	    {
868
	      x_sync (XFRAME (this));
869 870 871 872
	      FRAME_SAMPLE_VISIBILITY (XFRAME (this));
	    }
#endif

873 874 875 876
	  if (FRAME_VISIBLE_P (XFRAME (this))
	      || FRAME_ICONIFIED_P (XFRAME (this))
	      /* Allow deleting the terminal frame when at least
		 one X frame exists!  */
877
	      || (FRAME_X_P (XFRAME (this)) && !FRAME_X_P (f)))
878 879
	    count++;
	}
880
      return count > 1;
881
    }
882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898
  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;

  if (EQ (frame, Qnil))
    {
      f = selected_frame;
899
      XSETFRAME (frame, f);
900 901 902 903 904 905 906 907 908 909 910 911
    }
  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
912

Jim Blandy's avatar
Jim Blandy committed
913 914
  /* Does this frame have a minibuffer, and is it the surrogate
     minibuffer for any other frame?  */
915
  if (FRAME_HAS_MINIBUF_P (XFRAME (frame)))
Jim Blandy's avatar
Jim Blandy committed
916
    {
Jim Blandy's avatar
Jim Blandy committed
917
      Lisp_Object frames;
Jim Blandy's avatar
Jim Blandy committed
918

Jim Blandy's avatar
Jim Blandy committed
919 920 921
      for (frames = Vframe_list;
	   CONSP (frames);
	   frames = XCONS (frames)->cdr)
Jim Blandy's avatar
Jim Blandy committed
922
	{
923 924
	  Lisp_Object this;
	  this = XCONS (frames)->car;
Jim Blandy's avatar
Jim Blandy committed
925

Jim Blandy's avatar
Jim Blandy committed
926 927
	  if (! EQ (this, frame)
	      && EQ (frame,
928 929
		     WINDOW_FRAME (XWINDOW
				   (FRAME_MINIBUF_WINDOW (XFRAME (this))))))
Jim Blandy's avatar
Jim Blandy committed
930
	    error ("Attempt to delete a surrogate minibuffer frame");
Jim Blandy's avatar
Jim Blandy committed
931
	}
Jim Blandy's avatar
Jim Blandy committed
932 933
    }

Jim Blandy's avatar
Jim Blandy committed
934 935
  /* Don't let the frame remain selected.  */
  if (f == selected_frame)
936
    Fhandle_switch_frame (next_frame (frame, Qt), Qnil);
Jim Blandy's avatar
Jim Blandy committed
937

Jim Blandy's avatar
Jim Blandy committed
938 939
  /* Don't allow minibuf_window to remain on a deleted frame.  */
  if (EQ (f->minibuffer_window, minibuf_window))
Jim Blandy's avatar
Jim Blandy committed
940
    {
Jim Blandy's avatar
Jim Blandy committed
941
      Fset_window_buffer (selected_frame->minibuffer_window,
Jim Blandy's avatar
Jim Blandy committed
942
			  XWINDOW (minibuf_window)->buffer);
Jim Blandy's avatar
Jim Blandy committed
943
      minibuf_window = selected_frame->minibuffer_window;
Jim Blandy's avatar
Jim Blandy committed
944 945
    }

946 947 948 949 950 951
  /* Clear any X selections for this frame.  */
#ifdef HAVE_X_WINDOWS
  if (FRAME_X_P (f))
    x_clear_frame_selections (f);
#endif

952 953 954 955 956
  /* Mark all the windows that used to be on FRAME as deleted, and then
     remove the reference to them.  */
  delete_all_subwindows (XWINDOW (f->root_window));
  f->root_window = Qnil;

Jim Blandy's avatar
Jim Blandy committed
957
  Vframe_list = Fdelq (frame, Vframe_list);
958
  FRAME_SET_VISIBLE (f, 0);
Jim Blandy's avatar
Jim Blandy committed
959

Karl Heuer's avatar
Karl Heuer committed
960 961
  if (f->namebuf)
    free (f->namebuf);
962 963 964 965 966 967 968 969 970
  if (FRAME_CURRENT_GLYPHS (f))
    free_frame_glyphs (f, FRAME_CURRENT_GLYPHS (f));
  if (FRAME_DESIRED_GLYPHS (f))
    free_frame_glyphs (f, FRAME_DESIRED_GLYPHS (f));
  if (FRAME_TEMP_GLYPHS (f))
    free_frame_glyphs (f, FRAME_TEMP_GLYPHS (f));
  if (FRAME_INSERT_COST (f))
    free (FRAME_INSERT_COST (f));
  if (FRAME_DELETEN_COST (f))
971
    free (FRAME_DELETEN_COST (f));
972
  if (FRAME_INSERTN_COST (f))
973
    free (FRAME_INSERTN_COST (f));
974
  if (FRAME_DELETE_COST (f))
975
    free (FRAME_DELETE_COST (f));
976

977 978 979 980 981
  /* Since some events are handled at the interrupt level, we may get
     an event for f at any time; if we zero out the frame's display
     now, then we may trip up the event-handling code.  Instead, we'll
     promise that the display of the frame must be valid until we have
     called the window-system-dependent frame destruction routine.  */
Jim Blandy's avatar
Jim Blandy committed
982 983

  /* I think this should be done with a hook.  */
Jim Blandy's avatar
Jim Blandy committed
984
#ifdef HAVE_X_WINDOWS
985
  if (FRAME_X_P (f))
986
    x_destroy_window (f);
Jim Blandy's avatar
Jim Blandy committed
987 988
#endif

989 990
  f->display.nothing = 0;

Jim Blandy's avatar
Jim Blandy committed
991
  /* If we've deleted the last_nonminibuf_frame, then try to find
Jim Blandy's avatar
Jim Blandy committed
992
     another one.  */
Jim Blandy's avatar
Jim Blandy committed
993
  if (f == last_nonminibuf_frame)
Jim Blandy's avatar
Jim Blandy committed
994
    {
Jim Blandy's avatar
Jim Blandy committed
995
      Lisp_Object frames;
Jim Blandy's avatar
Jim Blandy committed
996

Jim Blandy's avatar
Jim Blandy committed
997
      last_nonminibuf_frame = 0;
Jim Blandy's avatar
Jim Blandy committed
998

Jim Blandy's avatar
Jim Blandy committed
999 1000 1001
      for (frames = Vframe_list;
	   CONSP (frames);
	   frames = XCONS (frames)->cdr)
Jim Blandy's avatar
Jim Blandy committed
1002
	{
Jim Blandy's avatar
Jim Blandy committed
1003 1004
	  f = XFRAME (XCONS (frames)->car);
	  if (!FRAME_MINIBUF_ONLY_P (f))
Jim Blandy's avatar
Jim Blandy committed
1005
	    {
Jim Blandy's avatar
Jim Blandy committed
1006
	      last_nonminibuf_frame = f;
Jim Blandy's avatar
Jim Blandy committed
1007 1008 1009 1010
	      break;
	    }
	}
    }
Jim Blandy's avatar
Jim Blandy committed
1011