frame.c 46.4 KB
Newer Older
Jim Blandy's avatar
Jim Blandy committed
1
/* Generic frame functions.
Jim Blandy's avatar
Jim Blandy committed
2
   Copyright (C) 1993 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.  */

Jim Blandy's avatar
Jim Blandy committed
20 21
#include <stdio.h>

Jim Blandy's avatar
Jim Blandy committed
22
#include "config.h"
23 24
#include "lisp.h"
#include "frame.h"
Jim Blandy's avatar
Jim Blandy committed
25

Jim Blandy's avatar
Jim Blandy committed
26
#ifdef MULTI_FRAME
Jim Blandy's avatar
Jim Blandy committed
27

Jim Blandy's avatar
Jim Blandy committed
28
#include "buffer.h"
Jim Blandy's avatar
Jim Blandy committed
29
#include "window.h"
Jim Blandy's avatar
Jim Blandy committed
30
#include "termhooks.h"
Jim Blandy's avatar
Jim Blandy committed
31

32 33 34 35
/* These help us bind and responding to switch-frame events.  */
#include "commands.h"
#include "keyboard.h"

Jim Blandy's avatar
Jim Blandy committed
36
Lisp_Object Vemacs_iconified;
Jim Blandy's avatar
Jim Blandy committed
37 38 39 40
Lisp_Object Vframe_list;
Lisp_Object Vterminal_frame;
Lisp_Object Vdefault_minibuffer_frame;
Lisp_Object Vdefault_frame_alist;
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

/* 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
77
Lisp_Object Qframe_live_p;
78 79
Lisp_Object Qheight;
Lisp_Object Qicon;
Jim Blandy's avatar
Jim Blandy committed
80
Lisp_Object Qminibuffer;
81 82 83 84
Lisp_Object Qmodeline;
Lisp_Object Qname;
Lisp_Object Qonly;
Lisp_Object Qunsplittable;
85
Lisp_Object Qmenu_bar_lines;
86 87
Lisp_Object Qwidth;
Lisp_Object Qx;
Jim Blandy's avatar
Jim Blandy committed
88 89 90 91

extern Lisp_Object Vminibuffer_list;
extern Lisp_Object get_minibuffer ();

Jim Blandy's avatar
Jim Blandy committed
92 93 94 95 96
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\
`x' for an Emacs frame that is really an X window.\n\
Also see `live-frame-p'.")
Jim Blandy's avatar
Jim Blandy committed
97 98
  (object)
     Lisp_Object object;
Jim Blandy's avatar
Jim Blandy committed
99
{
Jim Blandy's avatar
Jim Blandy committed
100
  if (XTYPE (object) != Lisp_Frame)
Jim Blandy's avatar
Jim Blandy committed
101
    return Qnil;
Jim Blandy's avatar
Jim Blandy committed
102
  switch (XFRAME (object)->output_method)
Jim Blandy's avatar
Jim Blandy committed
103 104 105 106
    {
    case output_termcap:
      return Qt;
    case output_x_window:
107
      return Qx;
Jim Blandy's avatar
Jim Blandy committed
108 109 110 111 112
    default:
      abort ();
    }
}

Jim Blandy's avatar
Jim Blandy committed
113
DEFUN ("frame-live-p", Fframe_live_p, Sframe_live_p, 1, 1, 0,
Jim Blandy's avatar
Jim Blandy committed
114 115 116 117 118
  "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
119 120 121
  (object)
     Lisp_Object object;
{
Jim Blandy's avatar
Jim Blandy committed
122 123 124
  return ((FRAMEP (object)
	   && FRAME_LIVE_P (XFRAME (object)))
	  ? Fframep (object)
Jim Blandy's avatar
Jim Blandy committed
125 126 127
	  : Qnil);
}

Jim Blandy's avatar
Jim Blandy committed
128 129
struct frame *
make_frame (mini_p)
Jim Blandy's avatar
Jim Blandy committed
130 131
     int mini_p;
{
Jim Blandy's avatar
Jim Blandy committed
132 133
  Lisp_Object frame;
  register struct frame *f;
Jim Blandy's avatar
Jim Blandy committed
134 135 136
  register Lisp_Object root_window;
  register Lisp_Object mini_window;

Jim Blandy's avatar
Jim Blandy committed
137
  frame = Fmake_vector (((sizeof (struct frame) - (sizeof (Lisp_Vector)
Jim Blandy's avatar
Jim Blandy committed
138 139
						     - sizeof (Lisp_Object)))
			  / sizeof (Lisp_Object)),
Jim Blandy's avatar
Jim Blandy committed
140
			 make_number (0));
Jim Blandy's avatar
Jim Blandy committed
141 142 143 144 145 146 147 148
  XSETTYPE (frame, Lisp_Frame);
  f = XFRAME (frame);

  f->cursor_x = 0;
  f->cursor_y = 0;
  f->current_glyphs = 0;
  f->desired_glyphs = 0;
  f->visible = 0;
149
  f->async_visible = 0;
Jim Blandy's avatar
Jim Blandy committed
150 151
  f->display.nothing = 0;
  f->iconified = 0;
152
  f->async_iconified = 0;
Jim Blandy's avatar
Jim Blandy committed
153 154 155 156 157 158
  f->wants_modeline = 1;
  f->auto_raise = 0;
  f->auto_lower = 0;
  f->no_split = 0;
  f->garbaged = 0;
  f->has_minibuffer = mini_p;
159
  f->focus_frame = Qnil;
160
  f->explicit_name = 0;
161 162
  f->can_have_scroll_bars = 0;
  f->has_vertical_scroll_bars = 0;
Jim Blandy's avatar
Jim Blandy committed
163
  f->param_alist = Qnil;
164 165
  f->scroll_bars = Qnil;
  f->condemned_scroll_bars = Qnil;
166
  f->face_alist = Qnil;
Jim Blandy's avatar
Jim Blandy committed
167

168
  root_window = make_window ();
Jim Blandy's avatar
Jim Blandy committed
169 170
  if (mini_p)
    {
171
      mini_window = make_window ();
Jim Blandy's avatar
Jim Blandy committed
172 173 174
      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
175 176
      XWINDOW (mini_window)->frame = frame;
      f->minibuffer_window = mini_window;
Jim Blandy's avatar
Jim Blandy committed
177 178 179 180 181
    }
  else
    {
      mini_window = Qnil;
      XWINDOW (root_window)->next = Qnil;
Jim Blandy's avatar
Jim Blandy committed
182
      f->minibuffer_window = Qnil;
Jim Blandy's avatar
Jim Blandy committed
183 184
    }

Jim Blandy's avatar
Jim Blandy committed
185
  XWINDOW (root_window)->frame = frame;
Jim Blandy's avatar
Jim Blandy committed
186 187 188

  /* 10 is arbitrary,
     just so that there is "something there."
Jim Blandy's avatar
Jim Blandy committed
189
     Correct size will be set up later with change_frame_size.  */
Jim Blandy's avatar
Jim Blandy committed
190

Jim Blandy's avatar
Jim Blandy committed
191 192
  f->width = 10;
  f->height = 10;
Jim Blandy's avatar
Jim Blandy committed
193 194 195 196 197 198 199 200 201 202 203

  XFASTINT (XWINDOW (root_window)->width) = 10;
  XFASTINT (XWINDOW (root_window)->height) = (mini_p ? 9 : 10);

  if (mini_p)
    {
      XFASTINT (XWINDOW (mini_window)->width) = 10;
      XFASTINT (XWINDOW (mini_window)->top) = 9;
      XFASTINT (XWINDOW (mini_window)->height) = 1;
    }

Jim Blandy's avatar
Jim Blandy committed
204
  /* Choose a buffer for the frame's root window.  */
Jim Blandy's avatar
Jim Blandy committed
205 206 207 208 209 210 211 212
  {
    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] == ' ')
213
      buf = Fother_buffer (buf, Qnil);
Jim Blandy's avatar
Jim Blandy committed
214 215 216
    Fset_window_buffer (root_window, buf);
  }

Jim Blandy's avatar
Jim Blandy committed
217 218 219 220
  if (mini_p)
    {
      XWINDOW (mini_window)->buffer = Qt;
      Fset_window_buffer (mini_window,
Jim Blandy's avatar
Jim Blandy committed
221
			  (NILP (Vminibuffer_list)
Jim Blandy's avatar
Jim Blandy committed
222 223 224 225
			   ? get_minibuffer (0)
			   : Fcar (Vminibuffer_list)));
    }

Jim Blandy's avatar
Jim Blandy committed
226 227
  f->root_window = root_window;
  f->selected_window = root_window;
Jim Blandy's avatar
Jim Blandy committed
228 229
  /* Make sure this window seems more recently used than
     a newly-created, never-selected window.  */
Jim Blandy's avatar
Jim Blandy committed
230
  XFASTINT (XWINDOW (f->selected_window)->use_time) = ++window_select_count;
Jim Blandy's avatar
Jim Blandy committed
231

Jim Blandy's avatar
Jim Blandy committed
232
  Vframe_list = Fcons (frame, Vframe_list);
Jim Blandy's avatar
Jim Blandy committed
233

Jim Blandy's avatar
Jim Blandy committed
234
  return f;
Jim Blandy's avatar
Jim Blandy committed
235 236
}

Jim Blandy's avatar
Jim Blandy committed
237
/* Make a frame using a separate minibuffer window on another frame.
Jim Blandy's avatar
Jim Blandy committed
238 239 240
   MINI_WINDOW is the minibuffer window to use.  nil means use the
   default (the global minibuffer).  */

Jim Blandy's avatar
Jim Blandy committed
241 242
struct frame *
make_frame_without_minibuffer (mini_window)
Jim Blandy's avatar
Jim Blandy committed
243 244
     register Lisp_Object mini_window;
{
Jim Blandy's avatar
Jim Blandy committed
245
  register struct frame *f;
Jim Blandy's avatar
Jim Blandy committed
246 247

  /* Choose the minibuffer window to use.  */
Jim Blandy's avatar
Jim Blandy committed
248
  if (NILP (mini_window))
Jim Blandy's avatar
Jim Blandy committed
249
    {
Jim Blandy's avatar
Jim Blandy committed
250 251 252 253 254
      if (XTYPE (Vdefault_minibuffer_frame) != Lisp_Frame)
	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
255 256 257
    }
  else
    {
258
      CHECK_LIVE_WINDOW (mini_window, 0);
Jim Blandy's avatar
Jim Blandy committed
259 260
    }

Jim Blandy's avatar
Jim Blandy committed
261 262
  /* Make a frame containing just a root window.  */
  f = make_frame (0);
Jim Blandy's avatar
Jim Blandy committed
263 264

  /* Install the chosen minibuffer window, with proper buffer.  */
Jim Blandy's avatar
Jim Blandy committed
265
  f->minibuffer_window = mini_window;
Jim Blandy's avatar
Jim Blandy committed
266
  Fset_window_buffer (mini_window,
Jim Blandy's avatar
Jim Blandy committed
267
		      (NILP (Vminibuffer_list)
Jim Blandy's avatar
Jim Blandy committed
268 269
		       ? get_minibuffer (0)
		       : Fcar (Vminibuffer_list)));
Jim Blandy's avatar
Jim Blandy committed
270
  return f;
Jim Blandy's avatar
Jim Blandy committed
271 272
}

Jim Blandy's avatar
Jim Blandy committed
273
/* Make a frame containing only a minibuffer window.  */
Jim Blandy's avatar
Jim Blandy committed
274

Jim Blandy's avatar
Jim Blandy committed
275 276
struct frame *
make_minibuffer_frame ()
Jim Blandy's avatar
Jim Blandy committed
277
{
Jim Blandy's avatar
Jim Blandy committed
278
  /* First make a frame containing just a root window, no minibuffer.  */
Jim Blandy's avatar
Jim Blandy committed
279

Jim Blandy's avatar
Jim Blandy committed
280
  register struct frame *f = make_frame (0);
Jim Blandy's avatar
Jim Blandy committed
281
  register Lisp_Object mini_window;
Jim Blandy's avatar
Jim Blandy committed
282
  register Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
283

Jim Blandy's avatar
Jim Blandy committed
284
  XSET (frame, Lisp_Frame, f);
Jim Blandy's avatar
Jim Blandy committed
285

286
  f->auto_raise = 0;
Jim Blandy's avatar
Jim Blandy committed
287 288 289 290
  f->auto_lower = 0;
  f->no_split = 1;
  f->wants_modeline = 0;
  f->has_minibuffer = 1;
Jim Blandy's avatar
Jim Blandy committed
291 292 293 294 295

  /* 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
296
  mini_window = f->minibuffer_window = f->root_window;
Jim Blandy's avatar
Jim Blandy committed
297 298
  XWINDOW (mini_window)->mini_p = Qt;
  XWINDOW (mini_window)->next = Qnil;
299
  XWINDOW (mini_window)->prev = Qnil;
Jim Blandy's avatar
Jim Blandy committed
300
  XWINDOW (mini_window)->frame = frame;
Jim Blandy's avatar
Jim Blandy committed
301 302 303 304

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

  Fset_window_buffer (mini_window,
Jim Blandy's avatar
Jim Blandy committed
305
		      (NILP (Vminibuffer_list)
Jim Blandy's avatar
Jim Blandy committed
306 307
		       ? get_minibuffer (0)
		       : Fcar (Vminibuffer_list)));
Jim Blandy's avatar
Jim Blandy committed
308
  return f;
Jim Blandy's avatar
Jim Blandy committed
309 310
}

Jim Blandy's avatar
Jim Blandy committed
311
/* Construct a frame that refers to the terminal (stdin and stdout).  */
Jim Blandy's avatar
Jim Blandy committed
312

Jim Blandy's avatar
Jim Blandy committed
313 314
struct frame *
make_terminal_frame ()
Jim Blandy's avatar
Jim Blandy committed
315
{
Jim Blandy's avatar
Jim Blandy committed
316 317 318 319 320
  register struct frame *f;

  Vframe_list = Qnil;
  f = make_frame (1);
  f->name = build_string ("terminal");
321
  FRAME_SET_VISIBLE (f, 1);
Jim Blandy's avatar
Jim Blandy committed
322 323 324
  f->display.nothing = 1;   /* Nonzero means frame isn't deleted.  */
  XSET (Vterminal_frame, Lisp_Frame, f);
  return f;
Jim Blandy's avatar
Jim Blandy committed
325 326
}

327
DEFUN ("select-frame", Fselect_frame, Sselect_frame, 1, 2, "e",
328
  "Select the frame FRAME.\n\
329
Subsequent editing commands apply to its selected window.\n\
330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345
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 Fhandle_switch_frame (frame, no_enter);
}


DEFUN ("handle-switch-frame", Fhandle_switch_frame, Shandle_switch_frame, 1, 2, "e",
  "Handle a switch-frame event EVENT.\n\
Switch-frame events is 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\
346
\n\
347 348
If EVENT is frame object, handle it as if it were a switch-frame event\n\
to that frame.")
Jim Blandy's avatar
Jim Blandy committed
349 350
  (frame, no_enter)
     Lisp_Object frame, no_enter;
Jim Blandy's avatar
Jim Blandy committed
351
{
352 353 354 355 356 357 358
  /* 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;

Jim Blandy's avatar
Jim Blandy committed
359
  CHECK_LIVE_FRAME (frame, 0);
Jim Blandy's avatar
Jim Blandy committed
360

Jim Blandy's avatar
Jim Blandy committed
361 362
  if (selected_frame == XFRAME (frame))
    return frame;
Jim Blandy's avatar
Jim Blandy committed
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
  /* 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.  */
  {
    Lisp_Object tail;

    for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr)
      {
	Lisp_Object focus;

	if (XTYPE (XCONS (tail)->car) != Lisp_Frame)
	  abort ();

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

	if (XTYPE (focus) == Lisp_Frame
	    && XFRAME (focus) == selected_frame)
	  Fredirect_frame_focus (XCONS (tail)->car, frame);
      }
  }

Jim Blandy's avatar
Jim Blandy committed
389 390 391
  selected_frame = XFRAME (frame);
  if (! FRAME_MINIBUF_ONLY_P (selected_frame))
    last_nonminibuf_frame = selected_frame;
Jim Blandy's avatar
Jim Blandy committed
392

Jim Blandy's avatar
Jim Blandy committed
393 394
  Fselect_window (XFRAME (frame)->selected_window);
  choose_minibuf_frame ();
Jim Blandy's avatar
Jim Blandy committed
395

396
  /* We want to make sure that the next event generates a frame-switch
397
     event to the appropriate frame.  This seems kludgy to me, but
398 399 400 401
     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.  */
402
  internal_last_event_frame = Qnil;
403

Jim Blandy's avatar
Jim Blandy committed
404
  return frame;
Jim Blandy's avatar
Jim Blandy committed
405 406
}

Jim Blandy's avatar
Jim Blandy committed
407 408
DEFUN ("selected-frame", Fselected_frame, Sselected_frame, 0, 0, 0,
  "Return the frame that is now selected.")
Jim Blandy's avatar
Jim Blandy committed
409 410 411
  ()
{
  Lisp_Object tem;
Jim Blandy's avatar
Jim Blandy committed
412
  XSET (tem, Lisp_Frame, selected_frame);
Jim Blandy's avatar
Jim Blandy committed
413 414 415
  return tem;
}

Jim Blandy's avatar
Jim Blandy committed
416 417
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
418 419 420
  (window)
     Lisp_Object window;
{
421
  CHECK_LIVE_WINDOW (window, 0);
Jim Blandy's avatar
Jim Blandy committed
422
  return XWINDOW (window)->frame;
Jim Blandy's avatar
Jim Blandy committed
423 424
}

Jim Blandy's avatar
Jim Blandy committed
425
DEFUN ("frame-root-window", Fframe_root_window, Sframe_root_window, 0, 1, 0,
426 427
       "Returns the root-window of FRAME.\n\
If omitted, FRAME defaults to the currently selected frame.")
Jim Blandy's avatar
Jim Blandy committed
428 429
  (frame)
     Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
430
{
Jim Blandy's avatar
Jim Blandy committed
431 432
  if (NILP (frame))
    XSET (frame, Lisp_Frame, selected_frame);
Jim Blandy's avatar
Jim Blandy committed
433
  else
Jim Blandy's avatar
Jim Blandy committed
434
    CHECK_LIVE_FRAME (frame, 0);
Jim Blandy's avatar
Jim Blandy committed
435

Jim Blandy's avatar
Jim Blandy committed
436
  return XFRAME (frame)->root_window;
Jim Blandy's avatar
Jim Blandy committed
437 438
}

Jim Blandy's avatar
Jim Blandy committed
439 440
DEFUN ("frame-selected-window", Fframe_selected_window,
       Sframe_selected_window, 0, 1, 0,
441 442
  "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
443 444
  (frame)
     Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
445
{
Jim Blandy's avatar
Jim Blandy committed
446 447
  if (NILP (frame))
    XSET (frame, Lisp_Frame, selected_frame);
Jim Blandy's avatar
Jim Blandy committed
448
  else
Jim Blandy's avatar
Jim Blandy committed
449
    CHECK_LIVE_FRAME (frame, 0);
Jim Blandy's avatar
Jim Blandy committed
450

Jim Blandy's avatar
Jim Blandy committed
451
  return XFRAME (frame)->selected_window;
Jim Blandy's avatar
Jim Blandy committed
452 453
}

Jim Blandy's avatar
Jim Blandy committed
454
DEFUN ("frame-list", Fframe_list, Sframe_list,
Jim Blandy's avatar
Jim Blandy committed
455
       0, 0, 0,
Jim Blandy's avatar
Jim Blandy committed
456
       "Return a list of all frames.")
Jim Blandy's avatar
Jim Blandy committed
457 458
  ()
{
Jim Blandy's avatar
Jim Blandy committed
459
  return Fcopy_sequence (Vframe_list);
Jim Blandy's avatar
Jim Blandy committed
460 461
}

Jim Blandy's avatar
Jim Blandy committed
462 463 464
/* Return the next frame in the frame list after FRAME.
   If MINIBUF is nil, exclude minibuffer-only frames.
   If MINIBUF is a window, include only frames using that window for
465 466
   their minibuffer.
   If MINIBUF is non-nil, and not a window, include all frames.  */
Jim Blandy's avatar
Jim Blandy committed
467
Lisp_Object
Jim Blandy's avatar
Jim Blandy committed
468 469
next_frame (frame, minibuf)
     Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
470
     Lisp_Object minibuf;
Jim Blandy's avatar
Jim Blandy committed
471 472 473 474
{
  Lisp_Object tail;
  int passed = 0;

Jim Blandy's avatar
Jim Blandy committed
475 476
  /* There must always be at least one frame in Vframe_list.  */
  if (! CONSP (Vframe_list))
Jim Blandy's avatar
Jim Blandy committed
477 478
    abort ();

Jim Blandy's avatar
Jim Blandy committed
479 480 481 482
  /* 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
483
  while (1)
Jim Blandy's avatar
Jim Blandy committed
484
    for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr)
Jim Blandy's avatar
Jim Blandy committed
485
      {
486 487
	Lisp_Object f = XCONS (tail)->car;

Jim Blandy's avatar
Jim Blandy committed
488
	if (passed)
Jim Blandy's avatar
Jim Blandy committed
489
	  {
490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508
	    /* 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;
	      }
	    else if (XTYPE (minibuf) == Lisp_Window)
	      {
		if (EQ (FRAME_MINIBUF_WINDOW (XFRAME (f)), minibuf))
		  return f;
	      }
	    else
Jim Blandy's avatar
Jim Blandy committed
509
	      return f;
Jim Blandy's avatar
Jim Blandy committed
510
	  }
Jim Blandy's avatar
Jim Blandy committed
511

512
	if (EQ (frame, f))
Jim Blandy's avatar
Jim Blandy committed
513 514 515 516
	  passed++;
      }
}

Jim Blandy's avatar
Jim Blandy committed
517 518 519
/* Return the previous frame in the frame list before FRAME.
   If MINIBUF is nil, exclude minibuffer-only frames.
   If MINIBUF is a window, include only frames using that window for
520 521
   their minibuffer.
   If MINIBUF is non-nil and not a window, include all frames.  */
Jim Blandy's avatar
Jim Blandy committed
522
Lisp_Object
Jim Blandy's avatar
Jim Blandy committed
523 524
prev_frame (frame, minibuf)
     Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
525
     Lisp_Object minibuf;
Jim Blandy's avatar
Jim Blandy committed
526 527 528 529
{
  Lisp_Object tail;
  Lisp_Object prev;

Jim Blandy's avatar
Jim Blandy committed
530 531
  /* There must always be at least one frame in Vframe_list.  */
  if (! CONSP (Vframe_list))
Jim Blandy's avatar
Jim Blandy committed
532 533
    abort ();

Jim Blandy's avatar
Jim Blandy committed
534
  prev = Qnil;
535
  for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr)
Jim Blandy's avatar
Jim Blandy committed
536
    {
537
      Lisp_Object f = XCONS (tail)->car;
Jim Blandy's avatar
Jim Blandy committed
538

539 540
      if (XTYPE (f) != Lisp_Frame)
	abort ();
Jim Blandy's avatar
Jim Blandy committed
541

542 543
      if (EQ (frame, f) && !NILP (prev))
	return prev;
Jim Blandy's avatar
Jim Blandy committed
544

545 546 547 548 549 550
      /* 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
551
	}
552 553 554 555 556 557 558
      else if (XTYPE (minibuf) == Lisp_Window)
	{
	  if (EQ (FRAME_MINIBUF_WINDOW (XFRAME (f)), minibuf))
	    prev = f;
	}
      else
	prev = f;
Jim Blandy's avatar
Jim Blandy committed
559
    }
560 561 562 563 564 565 566 567 568 569 570

  /* 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
571 572
}

Jim Blandy's avatar
Jim Blandy committed
573 574
DEFUN ("next-frame", Fnext_frame, Snext_frame, 0, 2, 0,
  "Return the next frame in the frame list after FRAME.\n\
575
By default, skip minibuffer-only frames.\n\
576
If omitted, FRAME defaults to the selected frame.\n\
577 578
If optional argument MINIFRAME is non-nil, include minibuffer-only frames.\n\
If MINIFRAME is a window, include only frames using that window for their\n\
579
minibuffer.\n\
580
If MINIFRAME is non-nil and not a window, include all frames.")
Jim Blandy's avatar
Jim Blandy committed
581
  (frame, miniframe)
582
     Lisp_Object frame, miniframe;
Jim Blandy's avatar
Jim Blandy committed
583 584 585
{
  Lisp_Object tail;

Jim Blandy's avatar
Jim Blandy committed
586 587
  if (NILP (frame))
    XSET (frame, Lisp_Frame, selected_frame);
Jim Blandy's avatar
Jim Blandy committed
588
  else
Jim Blandy's avatar
Jim Blandy committed
589
    CHECK_LIVE_FRAME (frame, 0);
Jim Blandy's avatar
Jim Blandy committed
590

Jim Blandy's avatar
Jim Blandy committed
591
  return next_frame (frame, miniframe);
Jim Blandy's avatar
Jim Blandy committed
592
}
Jim Blandy's avatar
Jim Blandy committed
593

Jim Blandy's avatar
Jim Blandy committed
594

Jim Blandy's avatar
Jim Blandy committed
595 596 597 598 599 600
DEFUN ("delete-frame", Fdelete_frame, Sdelete_frame, 0, 1, "",
  "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.")
  (frame)
     Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
601
{
Jim Blandy's avatar
Jim Blandy committed
602
  struct frame *f;
Jim Blandy's avatar
Jim Blandy committed
603

Jim Blandy's avatar
Jim Blandy committed
604
  if (EQ (frame, Qnil))
Jim Blandy's avatar
Jim Blandy committed
605
    {
Jim Blandy's avatar
Jim Blandy committed
606 607
      f = selected_frame;
      XSET (frame, Lisp_Frame, f);
Jim Blandy's avatar
Jim Blandy committed
608 609 610
    }
  else
    {
Jim Blandy's avatar
Jim Blandy committed
611 612
      CHECK_FRAME (frame, 0);
      f = XFRAME (frame);
Jim Blandy's avatar
Jim Blandy committed
613 614
    }

Jim Blandy's avatar
Jim Blandy committed
615
  if (! FRAME_LIVE_P (f))
616
    return Qnil;
Jim Blandy's avatar
Jim Blandy committed
617

Jim Blandy's avatar
Jim Blandy committed
618 619 620
  /* Are there any other frames besides this one?  */
  if (f == selected_frame && EQ (next_frame (frame, Qt), frame))
    error ("Attempt to delete the only frame");
Jim Blandy's avatar
Jim Blandy committed
621

Jim Blandy's avatar
Jim Blandy committed
622 623
  /* Does this frame have a minibuffer, and is it the surrogate
     minibuffer for any other frame?  */
624
  if (FRAME_HAS_MINIBUF_P (XFRAME (frame)))
Jim Blandy's avatar
Jim Blandy committed
625
    {
Jim Blandy's avatar
Jim Blandy committed
626
      Lisp_Object frames;
Jim Blandy's avatar
Jim Blandy committed
627

Jim Blandy's avatar
Jim Blandy committed
628 629 630
      for (frames = Vframe_list;
	   CONSP (frames);
	   frames = XCONS (frames)->cdr)
Jim Blandy's avatar
Jim Blandy committed
631
	{
Jim Blandy's avatar
Jim Blandy committed
632
	  Lisp_Object this = XCONS (frames)->car;
Jim Blandy's avatar
Jim Blandy committed
633

Jim Blandy's avatar
Jim Blandy committed
634 635 636
	  if (! EQ (this, frame)
	      && EQ (frame,
		     (WINDOW_FRAME
Jim Blandy's avatar
Jim Blandy committed
637
		      (XWINDOW
Jim Blandy's avatar
Jim Blandy committed
638 639 640
		       (FRAME_MINIBUF_WINDOW
			(XFRAME (this)))))))
	    error ("Attempt to delete a surrogate minibuffer frame");
Jim Blandy's avatar
Jim Blandy committed
641
	}
Jim Blandy's avatar
Jim Blandy committed
642 643
    }

Jim Blandy's avatar
Jim Blandy committed
644 645
  /* Don't let the frame remain selected.  */
  if (f == selected_frame)
646
    Fhandle_switch_frame (next_frame (frame, Qt), Qnil);
Jim Blandy's avatar
Jim Blandy committed
647

Jim Blandy's avatar
Jim Blandy committed
648 649
  /* 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
650
    {
Jim Blandy's avatar
Jim Blandy committed
651
      Fset_window_buffer (selected_frame->minibuffer_window,
Jim Blandy's avatar
Jim Blandy committed
652
			  XWINDOW (minibuf_window)->buffer);
Jim Blandy's avatar
Jim Blandy committed
653
      minibuf_window = selected_frame->minibuffer_window;
Jim Blandy's avatar
Jim Blandy committed
654 655
    }

656 657 658 659 660
  /* 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
661
  Vframe_list = Fdelq (frame, Vframe_list);
662
  FRAME_SET_VISIBLE (f, 0);
Jim Blandy's avatar
Jim Blandy committed
663

664 665 666 667 668
  /* 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
669 670

  /* I think this should be done with a hook.  */
Jim Blandy's avatar
Jim Blandy committed
671
#ifdef HAVE_X_WINDOWS
672
  if (FRAME_X_P (f))
673
    x_destroy_window (f);
Jim Blandy's avatar
Jim Blandy committed
674 675
#endif

676 677
  f->display.nothing = 0;

Jim Blandy's avatar
Jim Blandy committed
678
  /* If we've deleted the last_nonminibuf_frame, then try to find
Jim Blandy's avatar
Jim Blandy committed
679
     another one.  */
Jim Blandy's avatar
Jim Blandy committed
680
  if (f == last_nonminibuf_frame)
Jim Blandy's avatar
Jim Blandy committed
681
    {
Jim Blandy's avatar
Jim Blandy committed
682
      Lisp_Object frames;
Jim Blandy's avatar
Jim Blandy committed
683

Jim Blandy's avatar
Jim Blandy committed
684
      last_nonminibuf_frame = 0;
Jim Blandy's avatar
Jim Blandy committed
685

Jim Blandy's avatar
Jim Blandy committed
686 687 688
      for (frames = Vframe_list;
	   CONSP (frames);
	   frames = XCONS (frames)->cdr)
Jim Blandy's avatar
Jim Blandy committed
689
	{
Jim Blandy's avatar
Jim Blandy committed
690 691
	  f = XFRAME (XCONS (frames)->car);
	  if (!FRAME_MINIBUF_ONLY_P (f))
Jim Blandy's avatar
Jim Blandy committed
692
	    {
Jim Blandy's avatar
Jim Blandy committed
693
	      last_nonminibuf_frame = f;
Jim Blandy's avatar
Jim Blandy committed
694 695 696 697
	      break;
	    }
	}
    }
Jim Blandy's avatar
Jim Blandy committed
698

Jim Blandy's avatar
Jim Blandy committed
699 700
  /* If we've deleted Vdefault_minibuffer_frame, try to find another
     one.  Prefer minibuffer-only frames, but also notice frames
Jim Blandy's avatar
Jim Blandy committed
701
     with other windows.  */
Jim Blandy's avatar
Jim Blandy committed
702
  if (EQ (frame, Vdefault_minibuffer_frame))
Jim Blandy's avatar
Jim Blandy committed
703
    {
Jim Blandy's avatar
Jim Blandy committed
704
      Lisp_Object frames;
Jim Blandy's avatar
Jim Blandy committed
705

Jim Blandy's avatar
Jim Blandy committed
706 707
      /* The last frame we saw with a minibuffer, minibuffer-only or not.  */
      Lisp_Object frame_with_minibuf = Qnil;
Jim Blandy's avatar
Jim Blandy committed
708

Jim Blandy's avatar
Jim Blandy committed
709 710 711
      for (frames = Vframe_list;
	   CONSP (frames);
	   frames = XCONS (frames)->cdr)
Jim Blandy's avatar
Jim Blandy committed
712
	{
Jim Blandy's avatar
Jim Blandy committed
713
	  Lisp_Object this = XCONS (frames)->car;
Jim Blandy's avatar
Jim Blandy committed
714

Jim Blandy's avatar
Jim Blandy committed
715
	  if (XTYPE (this) != Lisp_Frame)
Jim Blandy's avatar
Jim Blandy committed
716
	    abort ();
Jim Blandy's avatar
Jim Blandy committed
717
	  f = XFRAME (this);
Jim Blandy's avatar
Jim Blandy committed
718

719
	  if (FRAME_HAS_MINIBUF_P (f))
Jim Blandy's avatar
Jim Blandy committed
720
	    {
Jim Blandy's avatar
Jim Blandy committed
721 722
	      frame_with_minibuf = this;
	      if (FRAME_MINIBUF_ONLY_P (f))
Jim Blandy's avatar
Jim Blandy committed
723 724 725 726
		break;
	    }
	}

Jim Blandy's avatar
Jim Blandy committed
727 728
      /* We know that there must be some frame with a minibuffer out
	 there.  If this were not true, all of the frames present
Jim Blandy's avatar
Jim Blandy committed
729
	 would have to be minibufferless, which implies that at some
Jim Blandy's avatar
Jim Blandy committed
730
	 point their minibuffer frames must have been deleted, but
Jim Blandy's avatar
Jim Blandy committed
731
	 that is prohibited at the top; you can't delete surrogate
Jim Blandy's avatar
Jim Blandy committed
732 733
	 minibuffer frames.  */
      if (NILP (frame_with_minibuf))
Jim Blandy's avatar
Jim Blandy committed
734 735
	abort ();

Jim Blandy's avatar
Jim Blandy committed
736
      Vdefault_minibuffer_frame = frame_with_minibuf;
Jim Blandy's avatar
Jim Blandy committed
737 738
    }

Jim Blandy's avatar
Jim Blandy committed
739 740 741 742 743
  return Qnil;
}

/* Return mouse position in character cell units.  */

Jim Blandy's avatar
Jim Blandy committed
744
DEFUN ("mouse-position", Fmouse_position, Smouse_position, 0, 0, 0,
Jim Blandy's avatar
Jim Blandy committed
745
  "Return a list (FRAME X . Y) giving the current mouse frame and position.\n\
746 747
The position is given in character cells, where (0, 0) is the\n\
upper-left corner.\n\
Jim Blandy's avatar
Jim Blandy committed
748
If Emacs is running on a mouseless terminal or hasn't been programmed\n\
Jim Blandy's avatar
Jim Blandy committed
749
to read the mouse position, it returns the selected frame for FRAME\n\
Jim Blandy's avatar
Jim Blandy committed
750 751
and nil for X and Y.")
  ()
Jim Blandy's avatar
Jim Blandy committed
752
{
Jim Blandy's avatar
Jim Blandy committed
753
  FRAME_PTR f;
Jim Blandy's avatar
Jim Blandy committed
754
  Lisp_Object lispy_dummy;
755
  enum scroll_bar_part party_dummy;
Jim Blandy's avatar
Jim Blandy committed
756 757
  Lisp_Object x, y;
  unsigned long long_dummy;
Jim Blandy's avatar
Jim Blandy committed
758

759 760 761 762
  f = selected_frame;
  x = y = Qnil;

  /* It's okay for the hook to refrain from storing anything.  */
Jim Blandy's avatar
Jim Blandy committed
763
  if (mouse_position_hook)
Jim Blandy's avatar
Jim Blandy committed
764 765 766 767
    (*mouse_position_hook) (&f,
			    &lispy_dummy, &party_dummy,
			    &x, &y,
			    &long_dummy);
Jim Blandy's avatar
Jim Blandy committed
768

Jim Blandy's avatar
Jim Blandy committed
769
  XSET (lispy_dummy, Lisp_Frame, f);
770
  return Fcons (lispy_dummy, Fcons (x, y));
Jim Blandy's avatar
Jim Blandy committed
771 772 773
}

DEFUN ("set-mouse-position", Fset_mouse_position, Sset_mouse_position, 3, 3, 0,
Jim Blandy's avatar
Jim Blandy committed
774
  "Move the mouse pointer to the center of character cell (X,Y) in FRAME.\n\
Jim Blandy's avatar
Jim Blandy committed
775 776 777
WARNING:  If you use this under X, you should do `unfocus-frame' afterwards.")
  (frame, x, y)
     Lisp_Object frame, x, y;
Jim Blandy's avatar
Jim Blandy committed
778
{
Jim Blandy's avatar
Jim Blandy committed
779
  CHECK_LIVE_FRAME (frame, 0);
Jim Blandy's avatar
Jim Blandy committed
780 781 782
  CHECK_NUMBER (x, 2);
  CHECK_NUMBER (y, 1);

Jim Blandy's avatar
Jim Blandy committed
783
  /* I think this should be done with a hook.  */
Jim Blandy's avatar
Jim Blandy committed
784
#ifdef HAVE_X_WINDOWS
785
  if (FRAME_X_P (XFRAME (frame)))
Jim Blandy's avatar
Jim Blandy committed
786
    /* Warping the mouse will cause  enternotify and focus events. */
Jim Blandy's avatar
Jim Blandy committed
787
    x_set_mouse_position (XFRAME (frame), x, y);
Jim Blandy's avatar
Jim Blandy committed
788 789 790 791 792
#endif

  return Qnil;
}

Jim Blandy's avatar
Jim Blandy committed
793
DEFUN ("make-frame-visible", Fmake_frame_visible, Smake_frame_visible,
Jim Blandy's avatar
Jim Blandy committed
794
       0, 1, 0,
Jim Blandy's avatar
Jim Blandy committed
795
  "Make the frame FRAME visible (assuming it is an X-window).\n\
796 797
Also raises the frame so that nothing obscures it.\n\
If omitted, FRAME defaults to the currently selected frame.")
Jim Blandy's avatar
Jim Blandy committed
798 799
  (frame)
     Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
800
{
Jim Blandy's avatar
Jim Blandy committed
801
  if (NILP (frame))
Jim Blandy's avatar
Jim Blandy committed
802
    XSET (frame, Lisp_Frame, selected_frame);
Jim Blandy's avatar
Jim Blandy committed
803

Jim Blandy's avatar
Jim Blandy committed
804
  CHECK_LIVE_FRAME (frame, 0);
Jim Blandy's avatar
Jim Blandy committed
805

Jim Blandy's avatar
Jim Blandy committed
806
  /* I think this should be done with a hook.  */
807 808
#ifdef HAVE_X_WINDOWS
  if (FRAME_X_P (XFRAME (frame)))
Jim Blandy's avatar
Jim Blandy committed
809
    x_make_frame_visible (XFRAME (frame));
810
#endif
Jim Blandy's avatar
Jim Blandy committed
811

Jim Blandy's avatar
Jim Blandy committed
812
  return frame;
Jim Blandy's avatar
Jim Blandy committed
813 814
}

Jim Blandy's avatar
Jim Blandy committed
815
DEFUN ("make-frame-invisible", Fmake_frame_invisible, Smake_frame_invisible,
Jim Blandy's avatar
Jim Blandy committed
816
       0, 1, "",
817 818
  "Make the frame FRAME invisible (assuming it is an X-window).\n\
If omitted, FRAME defaults to the currently selected frame.")
Jim Blandy's avatar
Jim Blandy committed
819 820
  (frame)
     Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
821
{
Jim Blandy's avatar
Jim Blandy committed
822
  if (NILP (frame))
Jim Blandy's avatar
Jim Blandy committed
823
    XSET (frame, Lisp_Frame, selected_frame);
Jim Blandy's avatar
Jim Blandy committed
824

Jim Blandy's avatar
Jim Blandy committed
825
  CHECK_LIVE_FRAME (frame, 0);
Jim Blandy's avatar
Jim Blandy committed
826

827 828 829 830 831 832 833 834 835 836 837 838
  /* Don't let the frame remain selected.  */
  if (XFRAME (frame) == selected_frame)
    Fhandle_switch_frame (next_frame (frame, Qt), Qnil);

  /* Don't allow minibuf_window to remain on a deleted frame.  */
  if (EQ (XFRAME (frame)->minibuffer_window, minibuf_window))
    {
      Fset_window_buffer (selected_frame->minibuffer_window,
			  XWINDOW (minibuf_window)->buffer);
      minibuf_window = selected_frame->minibuffer_window;
    }

Jim Blandy's avatar
Jim Blandy committed
839
  /* I think this should be done with a hook.  */
840 841
#ifdef HAVE_X_WINDOWS
  if (FRAME_X_P (XFRAME (frame)))
Jim Blandy's avatar
Jim Blandy committed
842
    x_make_frame_invisible (XFRAME (frame));
843
#endif
Jim Blandy's avatar
Jim Blandy committed
844 845 846 847

  return Qnil;
}

Jim Blandy's avatar
Jim Blandy committed
848
DEFUN ("iconify-frame", Ficonify_frame, Siconify_frame,
Jim Blandy's avatar
Jim Blandy committed
849
       0, 1, "",
850 851
  "Make the frame FRAME into an icon.\n\
If omitted, FRAME defaults to the currently selected frame.")
Jim Blandy's avatar
Jim Blandy committed
852 853
  (frame)
     Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
854
{
Jim Blandy's avatar
Jim Blandy committed
855
  if (NILP (frame))
Jim Blandy's avatar
Jim Blandy committed
856
    XSET (frame, Lisp_Frame, selected_frame);
Jim Blandy's avatar
Jim Blandy committed
857
  
Jim Blandy's avatar
Jim Blandy committed
858
  CHECK_LIVE_FRAME (frame, 0);
Jim Blandy's avatar
Jim Blandy committed
859

860 861 862 863 864 865 866 867 868 869 870 871
  /* Don't let the frame remain selected.  */
  if (XFRAME (frame) == selected_frame)
    Fhandle_switch_frame (next_frame (frame, Qt), Qnil);

  /* Don't allow minibuf_window to remain on a deleted frame.  */
  if (EQ (XFRAME (frame)->minibuffer_window, minibuf_window))
    {
      Fset_window_buffer (selected_frame->minibuffer_window,
			  XWINDOW (minibuf_window)->buffer);
      minibuf_window = selected_frame->minibuffer_window;
    }

Jim Blandy's avatar
Jim Blandy committed
872
  /* I think this should be done with a hook.  */
873 874
#ifdef HAVE_X_WINDOWS
  if (FRAME_X_P (XFRAME (frame)))
Jim Blandy's avatar
Jim Blandy committed
875
      x_iconify_frame (XFRAME (frame));
876
#endif
Jim Blandy's avatar
Jim Blandy committed
877 878 879 880

  return Qnil;
}

Jim Blandy's avatar
Jim Blandy committed
881
DEFUN ("frame-visible-p", Fframe_visible_p, Sframe_visible_p,
Jim Blandy's avatar
Jim Blandy committed
882
       1, 1, 0,
Jim Blandy's avatar
Jim Blandy committed
883 884
       "Return t if FRAME is now \"visible\" (actually in use for display).\n\
A frame that is not \"visible\" is not updated and, if it works through\n\
Jim Blandy's avatar
Jim Blandy committed
885
a window system, it may not show at all.\n\
886
Return the symbol `icon' if frame is visible only as an icon.")
Jim Blandy's avatar
Jim Blandy committed
887 888
  (frame)
     Lisp_Object frame;
Jim Blandy's avatar
Jim Blandy committed
889
{
Jim Blandy's avatar
Jim Blandy committed
890
  CHECK_LIVE_FRAME (frame, 0);
Jim Blandy's avatar
Jim Blandy committed
891

892
  if (FRAME_VISIBLE_P (XFRAME (frame)))
Jim Blandy's avatar
Jim Blandy committed
893
    return Qt;
894
  if (FRAME_ICONIFIED_P (XFRAME (frame)))
895
    return Qicon;
Jim Blandy's avatar
Jim Blandy committed
896 897 898
  return Qnil;
}

Jim Blandy's avatar
Jim Blandy committed
899
DEFUN ("visible-frame-list", Fvisible_frame_list, Svisible_frame_list,
Jim Blandy's avatar
Jim Blandy committed
900
       0, 0, 0,
Jim Blandy's avatar
Jim Blandy committed
901
       "Return a list of all frames now \"visible\" (being updated).")
Jim Blandy's avatar
Jim Blandy committed
902 903
  ()
{
Jim Blandy's avatar
Jim Blandy committed
904 905
  Lisp_Object tail, frame;
  struct frame *f;
Jim Blandy's avatar
Jim Blandy committed
906 907 908
  Lisp_Object value;

  value = Qnil;
Jim Blandy's avatar
Jim Blandy committed
909
  for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr)
Jim Blandy's avatar
Jim Blandy committed
910
    {
Jim Blandy's avatar
Jim Blandy committed
911 912
      frame = XCONS (tail)->car;
      if (XTYPE (frame) != Lisp_Frame)
Jim Blandy's avatar
Jim Blandy committed
913
	continue;