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235aa29b ER |
1 | ;;; menu-bar.el --- define a default menu bar. |
2 | ||
3 | ;; Author: RMS | |
b7f66977 | 4 | ;; Keywords: internal |
235aa29b | 5 | |
03dcd202 | 6 | ;; Copyright (C) 1993, 1994 Free Software Foundation, Inc. |
1db87953 RS |
7 | |
8 | ;; This file is part of GNU Emacs. | |
9 | ||
10 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
11 | ;; it under the terms of the GNU General Public License as published by | |
12 | ;; the Free Software Foundation; either version 2, or (at your option) | |
13 | ;; any later version. | |
14 | ||
15 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
19 | ||
20 | ;; You should have received a copy of the GNU General Public License | |
21 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
22 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
23 | ||
235aa29b | 24 | ;;; Code: |
1db87953 | 25 | |
b132f2b1 RM |
26 | ;; Don't clobber an existing menu-bar keymap, to preserve any menu-bar key |
27 | ;; definitions made in loaddefs.el. | |
28 | (or (lookup-key global-map [menu-bar]) | |
29 | (define-key global-map [menu-bar] (make-sparse-keymap "menu-bar"))) | |
22390f50 | 30 | (defvar menu-bar-help-menu (make-sparse-keymap "Help")) |
da183f87 RS |
31 | ;; Put Help item last. |
32 | (setq menu-bar-final-items '(help)) | |
33 | (define-key global-map [menu-bar help] (cons "Help" menu-bar-help-menu)) | |
22390f50 | 34 | (defvar menu-bar-edit-menu (make-sparse-keymap "Edit")) |
40954111 | 35 | (define-key global-map [menu-bar edit] (cons "Edit" menu-bar-edit-menu)) |
22390f50 | 36 | (defvar menu-bar-file-menu (make-sparse-keymap "File")) |
40954111 | 37 | (define-key global-map [menu-bar file] (cons "File" menu-bar-file-menu)) |
9bb8e471 | 38 | \f |
9dcdc43d RS |
39 | (defvar vc-menu-map (make-sparse-keymap "Version Control")) |
40 | ||
ca9b40a1 | 41 | (define-key menu-bar-file-menu [exit-emacs] |
db774a16 | 42 | '("Exit Emacs" . save-buffers-kill-emacs)) |
9bb8e471 RS |
43 | |
44 | (define-key menu-bar-file-menu [separator-compare] | |
45 | '("--")) | |
46 | ||
080ac1ac RS |
47 | (define-key menu-bar-file-menu [epatch] |
48 | '("Apply Patch" . menu-bar-epatch-menu)) | |
49 | (define-key menu-bar-file-menu [ediff] | |
40a8cde1 | 50 | '("Compare" . menu-bar-ediff-menu)) |
966bcddd | 51 | (define-key menu-bar-file-menu [emerge] '("Emerge" . menu-bar-emerge-menu)) |
9bb8e471 RS |
52 | |
53 | (define-key menu-bar-file-menu [separator-misc] | |
54 | '("--")) | |
55 | ||
661b05a7 RS |
56 | (define-key menu-bar-file-menu [calendar] '("Calendar" . calendar)) |
57 | (define-key menu-bar-file-menu [rmail] '("Read Mail" . rmail)) | |
58 | (define-key menu-bar-file-menu [gnus] '("Read Net News" . gnus)) | |
9bb8e471 | 59 | |
ca1a9692 RS |
60 | (if (fboundp 'delete-frame) |
61 | (progn | |
62 | (define-key menu-bar-file-menu [separator-frames] | |
63 | '("--")) | |
64 | ||
65 | (define-key menu-bar-file-menu [delete-frame] | |
66 | '("Delete Frame" . delete-frame)) | |
08e8171f RS |
67 | (define-key menu-bar-file-menu [make-frame-on-display] |
68 | '("Make Frame on Display" . make-frame-on-display)) | |
ca1a9692 RS |
69 | (define-key menu-bar-file-menu [make-frame] |
70 | '("Make New Frame" . make-frame)))) | |
9bb8e471 RS |
71 | |
72 | (define-key menu-bar-file-menu [separator-buffers] | |
73 | '("--")) | |
74 | ||
9d441895 | 75 | (define-key menu-bar-file-menu [bookmark] |
966bcddd | 76 | '("Bookmarks" . menu-bar-bookmark-map)) |
9bb8e471 RS |
77 | (define-key menu-bar-file-menu [print-buffer] |
78 | '("Print Buffer" . print-buffer)) | |
79 | (define-key menu-bar-file-menu [kill-buffer] | |
b85fdafb | 80 | '("Kill (Current) Buffer" . kill-this-buffer)) |
df4d8e01 RS |
81 | (define-key menu-bar-file-menu [insert-file] |
82 | '("Insert File" . insert-file)) | |
9dcdc43d RS |
83 | (define-key menu-bar-file-menu [vc-menu] |
84 | (cons "Version Control" vc-menu-map)) | |
2f1139a4 RS |
85 | (define-key menu-bar-file-menu [revert-buffer] |
86 | '("Revert Buffer" . revert-buffer)) | |
87 | (define-key menu-bar-file-menu [write-file] | |
88 | '("Save Buffer As..." . write-file)) | |
89 | (define-key menu-bar-file-menu [save-buffer] '("Save Buffer" . save-buffer)) | |
76202b57 | 90 | (define-key menu-bar-file-menu [dired] '("Open Directory..." . dired)) |
2f1139a4 | 91 | (define-key menu-bar-file-menu [open-file] '("Open File..." . find-file)) |
40a8cde1 RS |
92 | |
93 | ;; This is just one element of the ediff menu--the first. | |
94 | (define-key menu-bar-ediff-menu [window] | |
95 | '("This Window And Next Window" . compare-windows)) | |
9bb8e471 | 96 | \f |
33aa8946 RS |
97 | (define-key menu-bar-edit-menu [query-replace] |
98 | '("Query Replace" . query-replace)) | |
50d195ee RS |
99 | (define-key menu-bar-edit-menu [re-search-back] |
100 | '("Regexp Search Backwards" . re-search-backward)) | |
101 | (define-key menu-bar-edit-menu [search-back] | |
102 | '("Search Backwards" . search-backward)) | |
103 | (define-key menu-bar-edit-menu [re-search-fwd] | |
104 | '("Regexp Search" . re-search-forward)) | |
105 | (define-key menu-bar-edit-menu [search-fwd] | |
106 | '("Search" . search-forward)) | |
9bb8e471 RS |
107 | |
108 | (define-key menu-bar-edit-menu [separator-misc] | |
109 | '("--")) | |
110 | ||
111 | (define-key menu-bar-edit-menu [spell] '("Spell" . ispell-menu-map)) | |
112 | (define-key menu-bar-edit-menu [fill] '("Fill" . fill-region)) | |
113 | ||
114 | (define-key menu-bar-edit-menu [separator-edit] | |
115 | '("--")) | |
116 | ||
117 | (define-key menu-bar-edit-menu [clear] '("Clear" . delete-region)) | |
3dd92899 KH |
118 | |
119 | (define-key menu-bar-edit-menu [paste] '("Paste most recent" . yank)) | |
120 | ||
121 | (defvar yank-menu (cons "Select Yank" nil)) | |
122 | (fset 'yank-menu (cons 'keymap yank-menu)) | |
123 | (define-key menu-bar-edit-menu [select-paste] '("Select and Paste" . yank-menu)) | |
057d49d1 RS |
124 | (define-key menu-bar-edit-menu [copy] '("Copy" . kill-ring-save)) |
125 | (define-key menu-bar-edit-menu [cut] '("Cut" . kill-region)) | |
126 | (define-key menu-bar-edit-menu [undo] '("Undo" . undo)) | |
127 | ||
128 | (put 'fill-region 'menu-enable 'mark-active) | |
129 | (put 'kill-region 'menu-enable 'mark-active) | |
130 | (put 'kill-ring-save 'menu-enable 'mark-active) | |
131 | (put 'yank 'menu-enable '(x-selection-exists-p)) | |
3dd92899 | 132 | (put 'yank-menu 'menu-enable '(cdr yank-menu)) |
057d49d1 RS |
133 | (put 'delete-region 'menu-enable 'mark-active) |
134 | (put 'undo 'menu-enable '(if (eq last-command 'undo) | |
135 | pending-undo-list | |
136 | (consp buffer-undo-list))) | |
3a841b0b | 137 | (put 'query-replace 'menu-enable '(not buffer-read-only)) |
db774a16 | 138 | |
9e18f0a0 RS |
139 | (autoload 'ispell-menu-map "ispell" nil t 'keymap) |
140 | ||
f9cf0be2 RS |
141 | ;; These are alternative definitions for the cut, paste and copy |
142 | ;; menu items. Use them if your system expects these to use the clipboard | |
143 | ||
f9cf0be2 RS |
144 | (put 'clipboard-kill-region 'menu-enable 'mark-active) |
145 | (put 'clipboard-kill-ring-save 'menu-enable 'mark-active) | |
146 | (put 'clipboard-yank 'menu-enable | |
147 | '(or (x-selection-exists-p) (x-selection-exists-p 'CLIPBOARD))) | |
148 | ||
149 | (defun clipboard-yank () | |
150 | "Reinsert the last stretch of killed text, or the clipboard contents." | |
151 | (interactive) | |
152 | (let ((x-select-enable-clipboard t)) | |
153 | (yank))) | |
154 | ||
155 | (defun clipboard-kill-ring-save (beg end) | |
156 | "Copy region to kill ring, and save in the X clipboard." | |
157 | (interactive "r") | |
158 | (let ((x-select-enable-clipboard t)) | |
159 | (kill-ring-save beg end))) | |
160 | ||
161 | (defun clipboard-kill-region (beg end) | |
162 | "Kill the region, and save it in the X clipboard." | |
163 | (interactive "r") | |
164 | (let ((x-select-enable-clipboard t)) | |
165 | (kill-region beg end))) | |
166 | ||
167 | (defun menu-bar-enable-clipboard () | |
5cbdeb30 RS |
168 | "Make CUT, PASTE and COPY (keys and menu bar items) use the clipboard. |
169 | Do the same for the keys of the same name." | |
f9cf0be2 | 170 | (interactive) |
5754d7f2 RS |
171 | ;; We can't use constant list structure here because it becomes pure, |
172 | ;; and because it gets modified with cache data. | |
173 | (define-key menu-bar-edit-menu [paste] | |
174 | (cons "Paste" 'clipboard-yank)) | |
175 | (define-key menu-bar-edit-menu [copy] | |
176 | (cons "Copy" 'clipboard-kill-ring-save)) | |
177 | (define-key menu-bar-edit-menu [cut] | |
5cbdeb30 RS |
178 | (cons "Cut" 'clipboard-kill-region)) |
179 | ||
180 | (define-key global-map [f20] 'clipboard-kill-region) | |
181 | (define-key global-map [f16] 'clipboard-kill-ring-save) | |
182 | (define-key global-map [f18] 'clipboard-yank) | |
183 | ;; X11R6 versions | |
184 | (define-key global-map [cut] 'clipboard-kill-region) | |
185 | (define-key global-map [copy] 'clipboard-kill-ring-save) | |
186 | (define-key global-map [paste] 'clipboard-yank)) | |
f9cf0be2 | 187 | \f |
efb166ff RS |
188 | (define-key menu-bar-help-menu [emacs-version] |
189 | '("Show Version" . emacs-version)) | |
48433a65 RS |
190 | (define-key menu-bar-help-menu [report-emacs-bug] |
191 | '("Send Bug Report" . report-emacs-bug)) | |
ca9b40a1 | 192 | (define-key menu-bar-help-menu [emacs-tutorial] |
db774a16 | 193 | '("Emacs Tutorial" . help-with-tutorial)) |
2f1139a4 RS |
194 | (define-key menu-bar-help-menu [man] '("Man..." . manual-entry)) |
195 | (define-key menu-bar-help-menu [describe-variable] | |
196 | '("Describe Variable..." . describe-variable)) | |
197 | (define-key menu-bar-help-menu [describe-function] | |
198 | '("Describe Function..." . describe-function)) | |
199 | (define-key menu-bar-help-menu [describe-key] | |
200 | '("Describe Key..." . describe-key)) | |
201 | (define-key menu-bar-help-menu [list-keybindings] | |
202 | '("List Keybindings" . describe-bindings)) | |
203 | (define-key menu-bar-help-menu [command-apropos] | |
204 | '("Command Apropos..." . command-apropos)) | |
205 | (define-key menu-bar-help-menu [describe-mode] | |
206 | '("Describe Mode" . describe-mode)) | |
207 | (define-key menu-bar-help-menu [info] '("Info" . info)) | |
db774a16 | 208 | |
2f1139a4 | 209 | (define-key menu-bar-help-menu [emacs-news] '("Emacs News" . view-emacs-news)) |
db774a16 RS |
210 | (defun kill-this-buffer () ; for the menubar |
211 | "Kills the current buffer." | |
212 | (interactive) | |
213 | (kill-buffer (current-buffer))) | |
214 | ||
2f1139a4 RS |
215 | (defun kill-this-buffer-enabled-p () |
216 | (let ((count 0) | |
217 | (buffers (buffer-list))) | |
218 | (while buffers | |
219 | (or (string-match "^ " (buffer-name (car buffers))) | |
220 | (setq count (1+ count))) | |
221 | (setq buffers (cdr buffers))) | |
222 | (> count 1))) | |
223 | ||
db774a16 | 224 | (put 'save-buffer 'menu-enable '(buffer-modified-p)) |
da183f87 RS |
225 | (put 'revert-buffer 'menu-enable |
226 | '(or revert-buffer-function revert-buffer-insert-file-contents-function | |
227 | (and (buffer-file-name) | |
660fa562 RM |
228 | (or (buffer-modified-p) |
229 | (not (verify-visited-file-modtime (current-buffer))))))) | |
a0213a97 RS |
230 | ;; Permit deleting frame if it would leave a visible or iconified frame. |
231 | (put 'delete-frame 'menu-enable | |
232 | '(let ((frames (frame-list)) | |
233 | (count 0)) | |
234 | (while frames | |
235 | (if (cdr (assq 'visibility (frame-parameters (car frames)))) | |
236 | (setq count (1+ count))) | |
237 | (setq frames (cdr frames))) | |
238 | (> count 1))) | |
2f1139a4 RS |
239 | (put 'kill-this-buffer 'menu-enable '(kill-this-buffer-enabled-p)) |
240 | ||
db774a16 RS |
241 | (put 'advertised-undo 'menu-enable |
242 | '(and (not (eq t buffer-undo-list)) | |
243 | (if (eq last-command 'undo) | |
2f1139a4 RS |
244 | (and (boundp 'pending-undo-list) |
245 | pending-undo-list) | |
246 | buffer-undo-list))) | |
2877eac2 | 247 | |
c3e1d435 | 248 | (defvar yank-menu-length 20 |
3dd92899 KH |
249 | "*Maximum length to display in the yank-menu.") |
250 | ||
251 | (defun menu-bar-update-yank-menu (string old) | |
252 | (let ((front (car (cdr yank-menu))) | |
253 | (menu-string (if (<= (length string) yank-menu-length) | |
254 | string | |
c3e1d435 RS |
255 | (concat |
256 | (substring string 0 (/ yank-menu-length 2)) | |
257 | "..." | |
258 | (substring string (- (/ yank-menu-length 2))))))) | |
3dd92899 KH |
259 | ;; If we're supposed to be extending an existing string, and that |
260 | ;; string really is at the front of the menu, then update it in place. | |
261 | (if (and old (or (eq old (car front)) | |
262 | (string= old (car front)))) | |
dfabc98f | 263 | (progn |
3dd92899 KH |
264 | (setcar front string) |
265 | (setcar (cdr front) menu-string)) | |
266 | (setcdr yank-menu | |
267 | (cons | |
268 | (cons string (cons menu-string 'menu-bar-select-yank)) | |
269 | (cdr yank-menu))))) | |
270 | (if (> (length (cdr yank-menu)) kill-ring-max) | |
271 | (setcdr (nthcdr kill-ring-max yank-menu) nil))) | |
272 | ||
273 | (defun menu-bar-select-yank () | |
274 | (interactive "*") | |
275 | (push-mark (point)) | |
276 | (insert last-command-event)) | |
40954111 | 277 | \f |
09642d97 RS |
278 | (define-key global-map [menu-bar buffer] '("Buffers" . menu-bar-buffers)) |
279 | ||
280 | (defalias 'menu-bar-buffers (make-sparse-keymap "Buffers")) | |
40954111 | 281 | |
40954111 RS |
282 | (defvar buffers-menu-max-size 10 |
283 | "*Maximum number of entries which may appear on the Buffers menu. | |
284 | If this is 10, then only the ten most-recently-selected buffers are shown. | |
285 | If this is nil, then all buffers are shown. | |
286 | A large number or nil slows down menu responsiveness.") | |
287 | ||
d0690d12 RS |
288 | (defvar list-buffers-directory nil) |
289 | ||
08e8171f RS |
290 | (defvar menu-bar-update-buffers-maxbuf) |
291 | ||
09642d97 RS |
292 | (defun menu-bar-select-buffer () |
293 | (interactive) | |
294 | (switch-to-buffer last-command-event)) | |
295 | ||
296 | (defun menu-bar-select-frame () | |
297 | (interactive) | |
298 | (make-frame-visible last-command-event) | |
299 | (raise-frame last-command-event) | |
300 | (select-frame last-command-event)) | |
301 | ||
c171b42f RS |
302 | (defun menu-bar-update-buffers-1 (elt) |
303 | (cons (format | |
08e8171f | 304 | (format "%%%ds %%s%%s %%s" menu-bar-update-buffers-maxbuf) |
c171b42f RS |
305 | (cdr elt) |
306 | (if (buffer-modified-p (car elt)) | |
307 | "*" " ") | |
308 | (save-excursion | |
309 | (set-buffer (car elt)) | |
310 | (if buffer-read-only "%" " ")) | |
311 | (let ((file | |
312 | (or (buffer-file-name (car elt)) | |
313 | (save-excursion | |
314 | (set-buffer (car elt)) | |
315 | list-buffers-directory) | |
316 | ""))) | |
317 | (setq file (or (file-name-directory file) | |
318 | "")) | |
319 | (if (> (length file) 20) | |
320 | (setq file (concat "..." (substring file -17)))) | |
321 | file)) | |
322 | (car elt))) | |
323 | ||
09642d97 | 324 | (defun menu-bar-update-buffers () |
29397c58 | 325 | ;; If user discards the Buffers item, play along. |
4d587a6c | 326 | (and (lookup-key (current-global-map) [menu-bar buffer]) |
29397c58 RS |
327 | (frame-or-buffer-changed-p) |
328 | (let ((buffers (buffer-list)) | |
329 | (frames (frame-list)) | |
330 | buffers-menu frames-menu) | |
331 | ;; If requested, list only the N most recently selected buffers. | |
332 | (if (and (integerp buffers-menu-max-size) | |
333 | (> buffers-menu-max-size 1)) | |
334 | (if (> (length buffers) buffers-menu-max-size) | |
335 | (setcdr (nthcdr buffers-menu-max-size buffers) nil))) | |
336 | ||
337 | ;; Make the menu of buffers proper. | |
338 | (setq buffers-menu | |
339 | (cons "Select Buffer" | |
c171b42f RS |
340 | (let* ((buffer-list |
341 | (mapcar 'list buffers)) | |
342 | tail | |
08e8171f | 343 | (menu-bar-update-buffers-maxbuf 0) |
c171b42f RS |
344 | (maxlen 0) |
345 | alist | |
346 | head) | |
347 | ;; Put into each element of buffer-list | |
348 | ;; the name for actual display, | |
349 | ;; perhaps truncated in the middle. | |
350 | (setq tail buffer-list) | |
351 | (while tail | |
352 | (let ((name (buffer-name (car (car tail))))) | |
353 | (setcdr (car tail) | |
354 | (if (> (length name) 27) | |
355 | (concat (substring name 0 12) | |
356 | "..." | |
357 | (substring name -12)) | |
358 | name))) | |
359 | (setq tail (cdr tail))) | |
360 | ;; Compute the maximum length of any name. | |
361 | (setq tail buffer-list) | |
29397c58 | 362 | (while tail |
c171b42f | 363 | (or (eq ?\ (aref (cdr (car tail)) 0)) |
08e8171f RS |
364 | (setq menu-bar-update-buffers-maxbuf |
365 | (max menu-bar-update-buffers-maxbuf | |
c171b42f | 366 | (length (cdr (car tail)))))) |
29397c58 | 367 | (setq tail (cdr tail))) |
c171b42f RS |
368 | ;; Set ALIST to an alist of the form |
369 | ;; ITEM-STRING . BUFFER | |
370 | (setq tail buffer-list) | |
29397c58 RS |
371 | (while tail |
372 | (let ((elt (car tail))) | |
c171b42f | 373 | (or (eq ?\ (aref (cdr elt) 0)) |
29397c58 | 374 | (setq alist (cons |
c171b42f | 375 | (menu-bar-update-buffers-1 elt) |
29397c58 RS |
376 | alist))) |
377 | (and alist (> (length (car (car alist))) maxlen) | |
378 | (setq maxlen (length (car (car alist)))))) | |
379 | (setq tail (cdr tail))) | |
380 | (setq alist (nreverse alist)) | |
381 | (nconc (mapcar '(lambda (pair) | |
382 | ;; This is somewhat risque, to use | |
383 | ;; the buffer name itself as the event | |
384 | ;; type to define, but it works. | |
385 | ;; It would not work to use the buffer | |
386 | ;; since a buffer as an event has its | |
387 | ;; own meaning. | |
388 | (nconc (list (buffer-name (cdr pair)) | |
389 | (car pair) | |
390 | (cons nil nil)) | |
391 | 'menu-bar-select-buffer)) | |
392 | alist) | |
393 | (list | |
096ec7e7 | 394 | (cons |
29397c58 RS |
395 | 'list-buffers |
396 | (cons | |
397 | (concat (make-string (max (- (/ maxlen 2) 8) 0) | |
398 | ?\ ) | |
399 | "List All Buffers") | |
400 | 'list-buffers))))))) | |
401 | ||
402 | ||
403 | ;; Make a Frames menu if we have more than one frame. | |
404 | (if (cdr frames) | |
405 | (setq frames-menu | |
406 | (cons "Select Frame" | |
407 | (mapcar '(lambda (frame) | |
408 | (nconc (list frame | |
409 | (cdr (assq 'name | |
410 | (frame-parameters frame))) | |
411 | (cons nil nil)) | |
412 | 'menu-bar-select-frame)) | |
413 | frames)))) | |
414 | (if buffers-menu | |
415 | (setq buffers-menu (cons 'keymap buffers-menu))) | |
416 | (if frames-menu | |
417 | (setq frames-menu (cons 'keymap frames-menu))) | |
4d587a6c | 418 | (define-key (current-global-map) [menu-bar buffer] |
29397c58 RS |
419 | (cons "Buffers" |
420 | (if (and buffers-menu frames-menu) | |
421 | (list 'keymap "Buffers and Frames" | |
422 | (cons 'buffers (cons "Buffers" buffers-menu)) | |
423 | (cons 'frames (cons "Frames" frames-menu))) | |
424 | (or buffers-menu frames-menu 'undefined))))))) | |
09642d97 RS |
425 | |
426 | (add-hook 'menu-bar-update-hook 'menu-bar-update-buffers) | |
2f1139a4 | 427 | |
40954111 RS |
428 | ;; this version is too slow |
429 | ;;;(defun format-buffers-menu-line (buffer) | |
430 | ;;; "Returns a string to represent the given buffer in the Buffer menu. | |
431 | ;;;nil means the buffer shouldn't be listed. You can redefine this." | |
432 | ;;; (if (string-match "\\` " (buffer-name buffer)) | |
433 | ;;; nil | |
434 | ;;; (save-excursion | |
435 | ;;; (set-buffer buffer) | |
436 | ;;; (let ((size (buffer-size))) | |
437 | ;;; (format "%s%s %-19s %6s %-15s %s" | |
438 | ;;; (if (buffer-modified-p) "*" " ") | |
439 | ;;; (if buffer-read-only "%" " ") | |
440 | ;;; (buffer-name) | |
441 | ;;; size | |
442 | ;;; mode-name | |
443 | ;;; (or (buffer-file-name) "")))))) | |
444 | \f | |
7b7d6615 RS |
445 | (defvar menu-bar-mode nil) |
446 | ||
057d49d1 | 447 | (defun menu-bar-mode (flag) |
dfd29450 | 448 | "Toggle display of a menu bar on each frame. |
057d49d1 RS |
449 | This command applies to all frames that exist and frames to be |
450 | created in the future. | |
451 | With a numeric argument, if the argument is negative, | |
dfd29450 | 452 | turn off menu bars; otherwise, turn on menu bars." |
dad8e392 | 453 | (interactive "P") |
dad8e392 | 454 | |
7b7d6615 RS |
455 | ;; Make menu-bar-mode and default-frame-alist consistent. |
456 | (let ((default (assq 'menu-bar-lines default-frame-alist))) | |
457 | (if default | |
458 | (setq menu-bar-mode (not (eq (cdr default) 0))) | |
459 | (setq default-frame-alist | |
460 | (cons (cons 'menu-bar-lines (if menu-bar-mode 1 0)) | |
461 | default-frame-alist)))) | |
462 | ||
463 | ;; Toggle or set the mode, according to FLAG. | |
464 | (setq menu-bar-mode (if (null flag) (not menu-bar-mode) | |
465 | (> (prefix-numeric-value flag) 0))) | |
466 | ||
467 | ;; Apply it to default-frame-alist. | |
468 | (let ((parameter (assq 'menu-bar-lines default-frame-alist))) | |
469 | (if (consp parameter) | |
470 | (setcdr parameter (if menu-bar-mode 1 0)) | |
471 | (setq default-frame-alist | |
472 | (cons (cons 'menu-bar-lines (if menu-bar-mode 1 0)) | |
473 | default-frame-alist)))) | |
474 | ||
475 | ;; Apply it to existing frames. | |
476 | (let ((frames (frame-list))) | |
477 | (while frames | |
478 | (let ((height (cdr (assq 'height (frame-parameters (car frames)))))) | |
479 | (modify-frame-parameters (car frames) | |
480 | (list (cons 'menu-bar-lines | |
481 | (if menu-bar-mode 1 0)))) | |
482 | (modify-frame-parameters (car frames) | |
483 | (list (cons 'height height)))) | |
484 | (setq frames (cdr frames))))) | |
1db87953 | 485 | |
bffa5d4d RS |
486 | (provide 'menu-bar) |
487 | ||
235aa29b | 488 | ;;; menu-bar.el ends here |