lisp/menu-bar.el

   1 ;;; menu-bar.el --- define a default menu bar.
   2
   3 ;; Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.
   4
   5 ;; Author: RMS
   6 ;; Maintainer: FSF
   7 ;; Keywords: internal
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is free software; you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation; either version 2, or (at your option)
  14 ;; any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  24 ;; Boston, MA 02111-1307, USA.
  25
  26 ;; Avishai Yacobi suggested some menu rearrangements.
  27
  28 ;;; Code:
  29
  30 ;;; User options:
  31
  32 (defcustom buffers-menu-max-size 10
  33   "*Maximum number of entries which may appear on the Buffers menu.
  34 If this is 10, then only the ten most-recently-selected buffers are shown.
  35 If this is nil, then all buffers are shown.
  36 A large number or nil slows down menu responsiveness."
  37   :type '(choice integer
  38                  (const :tag "All" nil))
  39   :group 'mouse)
  40
  41 ;; Don't clobber an existing menu-bar keymap, to preserve any menu-bar key
  42 ;; definitions made in loaddefs.el.
  43 (or (lookup-key global-map [menu-bar])
  44     (define-key global-map [menu-bar] (make-sparse-keymap "menu-bar")))
  45 (defvar menu-bar-help-menu (make-sparse-keymap "Help"))
  46
  47 ;; Force Help item to come last, after the major mode's own items.
  48 ;; The symbol used to be called `help', but that gets confused with the
  49 ;; help key.
  50 (setq menu-bar-final-items '(help-menu))
  51
  52 (define-key global-map [menu-bar help-menu] (cons "Help" menu-bar-help-menu))
  53 (defvar menu-bar-search-menu (make-sparse-keymap "Search"))
  54 (define-key global-map [menu-bar search] (cons "Search" menu-bar-search-menu))
  55 (defvar menu-bar-edit-menu (make-sparse-keymap "Edit"))
  56 (define-key global-map [menu-bar edit] (cons "Edit" menu-bar-edit-menu))
  57 (defvar menu-bar-tools-menu (make-sparse-keymap "Tools"))
  58 (define-key global-map [menu-bar tools] (cons "Tools" menu-bar-tools-menu))
  59 (defvar menu-bar-files-menu (make-sparse-keymap "Files"))
  60 (define-key global-map [menu-bar files] (cons "Files" menu-bar-files-menu))
  61
  62 ;; This alias is for compatibility with 19.28 and before.
  63 (defvar menu-bar-file-menu menu-bar-files-menu)
  64 \f
  65 (defvar vc-menu-map (make-sparse-keymap "Version Control"))
  66
  67 (define-key menu-bar-tools-menu [gdb] '("Debugger..." . gdb))
  68 (define-key menu-bar-tools-menu [compile] '("Compile..." . compile))
  69 (define-key menu-bar-tools-menu [grep] '("Search Files..." . grep))
  70
  71 (define-key menu-bar-tools-menu [separator-1]
  72   '("--"))
  73
  74 (define-key menu-bar-tools-menu [calendar] '("Display Calendar" . calendar))
  75 (define-key menu-bar-tools-menu [speedbar]
  76   '("Display Speedbar" . speedbar-frame-mode))
  77 (define-key menu-bar-tools-menu [directory-search]
  78   '("Directory Search" . eudc-tools-menu))
  79 (define-key menu-bar-tools-menu [compose-mail] '("Send Mail" . compose-mail))
  80 (define-key menu-bar-tools-menu [rmail] '("Read Mail" . read-mail-command))
  81 (define-key menu-bar-tools-menu [gnus] '("Read Net News" . gnus))
  82
  83 (define-key menu-bar-tools-menu [separator-vc]
  84   '("--"))
  85
  86 (define-key menu-bar-tools-menu [vc]
  87   (cons "Version Control" vc-menu-map))
  88
  89 (define-key menu-bar-tools-menu [separator-compare]
  90   '("--"))
  91
  92 (define-key menu-bar-tools-menu [ediff-misc]
  93   '("Ediff Miscellanea" . menu-bar-ediff-misc-menu))
  94 (define-key menu-bar-tools-menu [epatch]
  95   '("Apply Patch" . menu-bar-epatch-menu))
  96 (define-key menu-bar-tools-menu [ediff-merge]
  97   '("Merge" . menu-bar-ediff-merge-menu))
  98 (define-key menu-bar-tools-menu [compare]
  99   '("Compare" . menu-bar-ediff-menu))
 100
 101 (define-key menu-bar-tools-menu [separator-print]
 102   '("--"))
 103
 104 (defvar menu-bar-print-menu (make-sparse-keymap "Print"))
 105
 106 (define-key menu-bar-print-menu [ps-print-region]
 107   '("Postscript Print Region" . ps-print-region-with-faces))
 108 (define-key menu-bar-print-menu [ps-print-buffer]
 109   '("Postscript Print Buffer" . ps-print-buffer-with-faces))
 110 (define-key menu-bar-print-menu [separator-ps-print]
 111   '("--"))
 112 (define-key menu-bar-print-menu [print-region]
 113   '("Print Region" . print-region))
 114 (define-key menu-bar-print-menu [print-buffer]
 115   '("Print Buffer" . print-buffer))
 116
 117 (define-key menu-bar-tools-menu [print]
 118   (cons "Print" menu-bar-print-menu))
 119
 120 (put 'print-region 'menu-enable 'mark-active)
 121 (put 'ps-print-region-with-faces 'menu-enable 'mark-active)
 122 \f
 123 (define-key menu-bar-files-menu [exit-emacs]
 124   '("Exit Emacs" . save-buffers-kill-emacs))
 125
 126 (define-key menu-bar-files-menu [separator-exit]
 127   '("--"))
 128
 129 (define-key menu-bar-files-menu [one-window]
 130   '("One Window" . delete-other-windows))
 131
 132 (define-key menu-bar-files-menu [split-window]
 133   '("Split Window" . split-window-vertically))
 134
 135 (if (fboundp 'delete-frame)
 136     (progn
 137       ;; Don't use delete-frame as event name
 138       ;; because that is a special event.
 139       (define-key menu-bar-files-menu [delete-this-frame]
 140         '("Delete Frame" . delete-frame))
 141       (define-key menu-bar-files-menu [make-frame-on-display]
 142         '("Open New Display..." . make-frame-on-display))
 143       (define-key menu-bar-files-menu [make-frame]
 144         '("Make New Frame" . make-frame-command))))
 145
 146 (define-key menu-bar-files-menu [separator-buffers]
 147   '("--"))
 148
 149 (define-key menu-bar-files-menu [kill-buffer]
 150   '("Kill Current Buffer" . kill-this-buffer))
 151 (define-key menu-bar-files-menu [insert-file]
 152   '("Insert File..." . insert-file))
 153 (define-key menu-bar-files-menu [recover-session]
 154   '("Recover Session..." . recover-session))
 155 (define-key menu-bar-files-menu [revert-buffer]
 156   '("Revert Buffer" . revert-buffer))
 157 (define-key menu-bar-files-menu [write-file]
 158   '("Save Buffer As..." . write-file))
 159 (define-key menu-bar-files-menu [save-buffer] '("Save Buffer" . save-buffer))
 160 (define-key menu-bar-files-menu [dired] '("Open Directory..." . dired))
 161 (define-key menu-bar-files-menu [open-file] '("Open File..." . find-file))
 162
 163 (put 'recover-session 'menu-enable
 164      '(and auto-save-list-file-prefix
 165            (directory-files
 166             (file-name-directory auto-save-list-file-prefix)
 167             nil
 168             (concat "\\`"
 169                     (regexp-quote (file-name-nondirectory
 170                                    auto-save-list-file-prefix)))
 171             t)))
 172 \f
 173 (defun nonincremental-search-forward (string)
 174   "Read a string and search for it nonincrementally."
 175   (interactive "sSearch for string: ")
 176   (if (equal string "")
 177       (search-forward (car search-ring))
 178     (isearch-update-ring string nil)
 179     (search-forward string)))
 180
 181 (defun nonincremental-search-backward (string)
 182   "Read a string and search backward for it nonincrementally."
 183   (interactive "sSearch for string: ")
 184   (if (equal string "")
 185       (search-backward (car search-ring))
 186     (isearch-update-ring string nil)
 187     (search-backward string)))
 188
 189 (defun nonincremental-re-search-forward (string)
 190   "Read a regular expression and search for it nonincrementally."
 191   (interactive "sSearch for regexp: ")
 192   (if (equal string "")
 193       (re-search-forward (car regexp-search-ring))
 194     (isearch-update-ring string t)
 195     (re-search-forward string)))
 196
 197 (defun nonincremental-re-search-backward (string)
 198   "Read a regular expression and search backward for it nonincrementally."
 199   (interactive "sSearch for regexp: ")
 200   (if (equal string "")
 201       (re-search-backward (car regexp-search-ring))
 202     (isearch-update-ring string t)
 203     (re-search-backward string)))
 204
 205 (defun nonincremental-repeat-search-forward ()
 206   "Search forward for the previous search string."
 207   (interactive)
 208   (if (null search-ring)
 209       (error "No previous search"))
 210   (search-forward (car search-ring)))
 211
 212 (defun nonincremental-repeat-search-backward ()
 213   "Search backward for the previous search string."
 214   (interactive)
 215   (if (null search-ring)
 216       (error "No previous search"))
 217   (search-backward (car search-ring)))
 218
 219 (defun nonincremental-repeat-re-search-forward ()
 220   "Search forward for the previous regular expression."
 221   (interactive)
 222   (if (null regexp-search-ring)
 223       (error "No previous search"))
 224   (re-search-forward (car regexp-search-ring)))
 225
 226 (defun nonincremental-repeat-re-search-backward ()
 227   "Search backward for the previous regular expression."
 228   (interactive)
 229   (if (null regexp-search-ring)
 230       (error "No previous search"))
 231   (re-search-backward (car regexp-search-ring)))
 232
 233 (define-key menu-bar-search-menu [query-replace-regexp]
 234   '("Query Replace Regexp..." . query-replace-regexp))
 235 (define-key menu-bar-search-menu [query-replace]
 236   '("Query Replace..." . query-replace))
 237 (define-key menu-bar-search-menu [find-tag]
 238   '("Find Tag..." . find-tag))
 239 (define-key menu-bar-search-menu [bookmark]
 240   '("Bookmarks" . menu-bar-bookmark-map))
 241
 242 (define-key menu-bar-search-menu [separator-search]
 243   '("--"))
 244
 245 (define-key menu-bar-search-menu [repeat-regexp-back]
 246   '("Repeat Regexp Backwards" . nonincremental-repeat-re-search-backward))
 247 (define-key menu-bar-search-menu [repeat-search-back]
 248   '("Repeat Backwards" . nonincremental-repeat-search-backward))
 249 (define-key menu-bar-search-menu [repeat-regexp-fwd]
 250   '("Repeat Regexp" . nonincremental-repeat-re-search-forward))
 251 (define-key menu-bar-search-menu [repeat-search-fwd]
 252   '("Repeat Search" . nonincremental-repeat-search-forward))
 253
 254 (define-key menu-bar-search-menu [separator-repeat]
 255   '("--"))
 256
 257 (define-key menu-bar-search-menu [re-search-backward]
 258   '("Regexp Search Backwards..." . nonincremental-re-search-backward))
 259 (define-key menu-bar-search-menu [search-backward]
 260   '("Search Backwards..." . nonincremental-search-backward))
 261 (define-key menu-bar-search-menu [re-search-forward]
 262   '("Regexp Search..." . nonincremental-re-search-forward))
 263 (define-key menu-bar-search-menu [search-forward]
 264   '("Search..." . nonincremental-search-forward))
 265 \f
 266 (define-key menu-bar-edit-menu [spell] '("Spell" . ispell-menu-map))
 267 (define-key menu-bar-edit-menu [fill] '("Fill" . fill-region))
 268 (define-key menu-bar-edit-menu [props] '("Text Properties" . facemenu-menu))
 269
 270 (define-key menu-bar-edit-menu [separator-edit]
 271   '("--"))
 272
 273 (define-key menu-bar-edit-menu [clear] '("Clear" . delete-region))
 274
 275 (defvar yank-menu (cons "Select Yank" nil))
 276 (fset 'yank-menu (cons 'keymap yank-menu))
 277 (define-key menu-bar-edit-menu [select-paste] '("Select and Paste" . yank-menu))
 278 (define-key menu-bar-edit-menu [paste] '("Paste" . yank))
 279 (define-key menu-bar-edit-menu [copy] '("Copy" . menu-bar-kill-ring-save))
 280 (define-key menu-bar-edit-menu [cut] '("Cut" . kill-region))
 281 (define-key menu-bar-edit-menu [undo] '("Undo" . undo))
 282
 283 (defun menu-bar-kill-ring-save (beg end)
 284   (interactive "r")
 285   (if (mouse-region-match)
 286       (message "Selecting a region with the mouse does `copy' automatically")
 287     (kill-ring-save beg end)))
 288
 289 (put 'fill-region 'menu-enable '(and mark-active (not buffer-read-only)))
 290 (put 'kill-region 'menu-enable '(and mark-active (not buffer-read-only)))
 291 (put 'menu-bar-kill-ring-save 'menu-enable 'mark-active)
 292 (put 'yank 'menu-enable '(and (x-selection-exists-p) (not buffer-read-only)))
 293 (put 'yank-menu 'menu-enable '(and (cdr yank-menu) (not buffer-read-only)))
 294 (put 'delete-region 'menu-enable '(and mark-active
 295                                        (not buffer-read-only)
 296                                        (not (mouse-region-match))))
 297 (put 'undo 'menu-enable '(and (not buffer-read-only)
 298                               (if (eq last-command 'undo)
 299                                   pending-undo-list
 300                                 (consp buffer-undo-list))))
 301 (put 'query-replace 'menu-enable '(not buffer-read-only))
 302 (put 'query-replace-regexp 'menu-enable '(not buffer-read-only))
 303
 304 (autoload 'ispell-menu-map "ispell" nil t 'keymap)
 305
 306 ;; These are alternative definitions for the cut, paste and copy
 307 ;; menu items.  Use them if your system expects these to use the clipboard.
 308
 309 (put 'clipboard-kill-region 'menu-enable 'mark-active)
 310 (put 'clipboard-kill-ring-save 'menu-enable 'mark-active)
 311 (put 'clipboard-yank 'menu-enable
 312      '(or (x-selection-exists-p) (x-selection-exists-p 'CLIPBOARD)))
 313
 314 (defun clipboard-yank ()
 315   "Insert the clipboard contents, or the last stretch of killed text."
 316   (interactive)
 317   (let ((x-select-enable-clipboard t))
 318     (yank)))
 319
 320 (defun clipboard-kill-ring-save (beg end)
 321   "Copy region to kill ring, and save in the X clipboard."
 322   (interactive "r")
 323   (let ((x-select-enable-clipboard t))
 324     (kill-ring-save beg end)))
 325
 326 (defun clipboard-kill-region (beg end)
 327   "Kill the region, and save it in the X clipboard."
 328   (interactive "r")
 329   (let ((x-select-enable-clipboard t))
 330     (kill-region beg end)))
 331
 332 (defun menu-bar-enable-clipboard ()
 333   "Make CUT, PASTE and COPY (keys and menu bar items) use the clipboard.
 334 Do the same for the keys of the same name."
 335   (interactive)
 336   ;; We can't use constant list structure here because it becomes pure,
 337   ;; and because it gets modified with cache data.
 338   (define-key menu-bar-edit-menu [paste]
 339     (cons "Paste" 'clipboard-yank))
 340   (define-key menu-bar-edit-menu [copy]
 341     (cons "Copy" 'clipboard-kill-ring-save))
 342   (define-key menu-bar-edit-menu [cut]
 343     (cons "Cut" 'clipboard-kill-region))
 344
 345   (define-key global-map [f20] 'clipboard-kill-region)
 346   (define-key global-map [f16] 'clipboard-kill-ring-save)
 347   (define-key global-map [f18] 'clipboard-yank)
 348   ;; X11R6 versions
 349   (define-key global-map [cut] 'clipboard-kill-region)
 350   (define-key global-map [copy] 'clipboard-kill-ring-save)
 351   (define-key global-map [paste] 'clipboard-yank))
 352 \f
 353
 354 ;;; Menu support
 355
 356 (defvar menu-bar-custom-menu (make-sparse-keymap "Customize"))
 357
 358 (define-key menu-bar-custom-menu [customize-apropos-groups]
 359   '("Apropos Groups..." . customize-apropos-groups))
 360 (define-key menu-bar-custom-menu [customize-apropos-faces]
 361   '("Apropos Faces..." . customize-apropos-faces))
 362 (define-key menu-bar-custom-menu [customize-apropos-options]
 363   '("Apropos Options..." . customize-apropos-options))
 364 (define-key menu-bar-custom-menu [customize-apropos]
 365   '("Apropos..." . customize-apropos))
 366 (define-key menu-bar-custom-menu [separator-2]
 367   '("--"))
 368 (define-key menu-bar-custom-menu [customize-group]
 369   '("Specific Group..." . customize-group))
 370 (define-key menu-bar-custom-menu [customize-face]
 371   '("Specific Face..." . customize-face))
 372 (define-key menu-bar-custom-menu [customize-option]
 373   '("Specific Option..." . customize-option))
 374 (define-key menu-bar-custom-menu [customize-changed-options]
 375   '("Changed Options..." . customize-changed-options))
 376 (define-key menu-bar-custom-menu [separator-3]
 377   '("--"))
 378 (define-key menu-bar-custom-menu [customize-browse]
 379   '("Browse Customization Groups" . customize-browse))
 380 (define-key menu-bar-custom-menu [customize]
 381   '("Top-level Customization Group" . customize))
 382
 383 ;; Options menu
 384 (defvar menu-bar-options-menu (make-sparse-keymap "Global Options"))
 385
 386 (defmacro menu-bar-make-toggle (name variable doc message &rest body)
 387   `(progn
 388      (defun ,name ()
 389        ,(concat doc ".")
 390        (interactive)
 391        (if ,(if body `(progn . ,body)
 392               `(setq ,variable (not ,variable)))
 393            (message ,message "enabled")
 394          (message ,message "disabled")))
 395      '(menu-item ,doc ,name .
 396                  (:button (:toggle . (and (boundp ',variable) ,variable))))))
 397
 398 (define-key menu-bar-options-menu [debug-on-quit]
 399   (menu-bar-make-toggle toggle-debug-on-quit debug-on-quit
 400                         "Debug on Quit" "Debug on Quit %s"))
 401 (define-key menu-bar-options-menu [debug-on-error]
 402   (menu-bar-make-toggle toggle-debug-on-error debug-on-error
 403                         "Debug on Error" "Debug on Error %s"))
 404 (define-key menu-bar-options-menu [options-separator]
 405   '("--"))
 406 (define-key menu-bar-options-menu [save-place]
 407   (menu-bar-make-toggle toggle-save-place-globally save-place
 408                         "Save Place in Files between Sessions"
 409                         "Saving place in files %s"
 410                         (require 'saveplace)
 411                         (setq-default save-place (not (default-value save-place)))))
 412 (define-key menu-bar-options-menu [uniquify]
 413   (menu-bar-make-toggle toggle-uniquify-buffer-names uniquify-buffer-name-style
 414                         "Use Directory Names in Buffer Names"
 415                         "Directory name in buffer names (uniquify) %s"
 416                         (require 'uniquify)
 417                         (setq uniquify-buffer-name-style
 418                               (if (not uniquify-buffer-name-style)
 419                                   'forward))))
 420 (define-key menu-bar-options-menu [case-fold-search]
 421   (menu-bar-make-toggle toggle-case-fold-search case-fold-search
 422                         "Case folding in searches"
 423                         "Case folding in searches %s"))
 424 (define-key menu-bar-options-menu [truncate-lines]
 425   (menu-bar-make-toggle
 426    toggle-truncate-lines truncate-lines
 427    "Line Truncation" "Line Truncation %s"
 428    (prog1 (setq truncate-lines (not truncate-lines))
 429      (set-buffer-modified-p (buffer-modified-p)))))
 430 (define-key menu-bar-options-menu [transient-mark-mode]
 431   (menu-bar-make-toggle toggle-transient-mark-mode transient-mark-mode
 432                         "Transient Mark Mode (highlights region)"
 433                         "Transient Mark mode %s"))
 434 (define-key menu-bar-options-menu [toggle-auto-compression]
 435   '(menu-item "Automatic File De/compression"
 436              auto-compression-mode .
 437              (:button (:toggle . (rassq 'jka-compr-handler
 438                                         file-name-handler-alist)))))
 439 (define-key menu-bar-options-menu [auto-fill-mode]
 440   '(menu-item "Auto Fill (word wrap) in Text modes"
 441               toggle-text-mode-auto-fill .
 442               (:button (:toggle . (member 'turn-on-auto-fill text-mode-hook)))))
 443 (define-key menu-bar-options-menu [toggle-global-lazy-font-lock-mode]
 444   (menu-bar-make-toggle toggle-global-lazy-font-lock-mode global-font-lock-mode
 445                         "Global Font Lock (highlights syntax)"
 446                         "Global Font Lock mode %s"
 447                         ;; Make sure a support mode is used;
 448                         ;; otherwise Font Lock will be too slow.
 449                         (require 'font-lock)
 450                         (if (not global-font-lock-mode)
 451                             (or font-lock-support-mode
 452                                 (setq font-lock-support-mode 'lazy-lock-mode)))
 453                         (global-font-lock-mode)))
 454 \f
 455 (defvar menu-bar-describe-menu (make-sparse-keymap "Describe"))
 456
 457 (define-key menu-bar-describe-menu [describe-variable]
 458   '("Describe Variable..." . describe-variable))
 459 (define-key menu-bar-describe-menu [describe-function]
 460   '("Describe Function..." . describe-function))
 461 (define-key menu-bar-describe-menu [describe-key]
 462   '("Describe Key..." . describe-key))
 463 (define-key menu-bar-describe-menu [list-keybindings]
 464   '("List Key Bindings" . describe-bindings))
 465 (define-key menu-bar-describe-menu [apropos-variables]
 466   '("Apropos Variables..." . apropos-variable))
 467 (define-key menu-bar-describe-menu [apropos-commands]
 468   '("Apropos Commands..." . apropos-command))
 469 (define-key menu-bar-describe-menu [describe-mode]
 470   '("Describe Buffer Modes" . describe-mode))
 471
 472 (defvar menu-bar-manuals-menu (make-sparse-keymap "Manuals"))
 473
 474 (define-key menu-bar-manuals-menu [man]
 475   '("Read Man Page..." . manual-entry))
 476 (define-key menu-bar-manuals-menu [sep2]
 477   '("--"))
 478 (define-key menu-bar-manuals-menu [key]
 479   '("Find Key in Manual" . Info-goto-emacs-key-command-node))
 480 (define-key menu-bar-manuals-menu [command]
 481   '("Find Command in Manual" . Info-goto-emacs-command-node))
 482 (define-key menu-bar-manuals-menu [info]
 483   '("Browse Manuals with Info" . info))
 484 (define-key menu-bar-manuals-menu [sep1]
 485   '("--"))
 486 (define-key menu-bar-manuals-menu [emacs-problems]
 487   '("Emacs Known Problems" . view-emacs-problems))
 488 (define-key menu-bar-manuals-menu [emacs-faq]
 489   '("Emacs FAQ" . view-emacs-FAQ))
 490 (define-key menu-bar-manuals-menu [emacs-news]
 491   '("Emacs News" . view-emacs-news))
 492
 493 (define-key menu-bar-help-menu [describe-no-warranty]
 494   '("(Non)Warranty" . describe-no-warranty))
 495 (define-key menu-bar-help-menu [describe-copying]
 496   '("Copying Conditions" . describe-copying))
 497 (define-key menu-bar-help-menu [describe-distribution]
 498   '("Getting New Versions" . describe-distribution))
 499 (define-key menu-bar-help-menu [emacs-version]
 500   '("Show Version" . emacs-version))
 501 (define-key menu-bar-help-menu [report-emacs-bug]
 502   '("Send Bug Report..." . report-emacs-bug))
 503 (define-key menu-bar-help-menu [sep2]
 504   '("--"))
 505 (define-key menu-bar-help-menu [finder-by-keyword]
 506   '("Find Emacs Packages..." . finder-by-keyword))
 507 (define-key menu-bar-help-menu [describe]
 508   (cons "Describe" menu-bar-describe-menu))
 509 (define-key menu-bar-help-menu [manuals]
 510   (cons "Manuals" menu-bar-manuals-menu))
 511 (define-key menu-bar-help-menu [emacs-tutorial]
 512   '("Emacs Tutorial" . help-with-tutorial))
 513 (define-key menu-bar-help-menu [sep1]
 514   '("--"))
 515 (define-key menu-bar-help-menu [options]
 516   (cons "Options" menu-bar-options-menu))
 517 (define-key menu-bar-help-menu [customize]
 518   (cons "Customize" menu-bar-custom-menu))
 519
 520 (defun kill-this-buffer ()      ; for the menubar
 521   "Kills the current buffer."
 522   (interactive)
 523   (kill-buffer (current-buffer)))
 524
 525 (defun kill-this-buffer-enabled-p ()
 526   (let ((count 0)
 527         (buffers (buffer-list)))
 528     (while buffers
 529       (or (string-match "^ " (buffer-name (car buffers)))
 530           (setq count (1+ count)))
 531       (setq buffers (cdr buffers)))
 532     (and (not (window-minibuffer-p (frame-selected-window menu-updating-frame)))
 533          (> count 1))))
 534
 535 (put 'kill-this-buffer 'menu-enable '(kill-this-buffer-enabled-p))
 536
 537 (put 'save-buffer 'menu-enable
 538      '(and (buffer-modified-p)
 539            (not (window-minibuffer-p (frame-selected-window menu-updating-frame)))))
 540
 541 (put 'write-file 'menu-enable
 542      '(not (window-minibuffer-p (frame-selected-window menu-updating-frame))))
 543
 544 (put 'find-file 'menu-enable
 545      '(not (window-minibuffer-p (frame-selected-window menu-updating-frame))))
 546
 547 (put 'dired 'menu-enable
 548      '(not (window-minibuffer-p (frame-selected-window menu-updating-frame))))
 549
 550 (put 'insert-file 'menu-enable
 551      '(not (window-minibuffer-p (frame-selected-window menu-updating-frame))))
 552
 553 (put 'revert-buffer 'menu-enable
 554      '(or revert-buffer-function revert-buffer-insert-file-contents-function
 555           (and (buffer-file-name)
 556                (or (buffer-modified-p)
 557                    (not (verify-visited-file-modtime (current-buffer)))))))
 558
 559 ;; Permit deleting frame if it would leave a visible or iconified frame.
 560 (put 'delete-frame 'menu-enable
 561      '(delete-frame-enabled-p))
 562
 563 (defun delete-frame-enabled-p ()
 564   "Return non-nil if `delete-frame' should be enabled in the menu bar."
 565   (let ((frames (frame-list))
 566         (count 0))
 567     (while frames
 568       (if (frame-visible-p (car frames))
 569           (setq count (1+ count)))
 570       (setq frames (cdr frames)))
 571     (> count 1)))
 572
 573 (put 'advertised-undo 'menu-enable
 574      '(and (not (eq t buffer-undo-list))
 575            (if (eq last-command 'undo)
 576                (and (boundp 'pending-undo-list)
 577                     pending-undo-list)
 578              buffer-undo-list)))
 579
 580 (defcustom yank-menu-length 20
 581   "*Maximum length to display in the yank-menu."
 582   :type 'integer
 583   :group 'mouse)
 584
 585 (defun menu-bar-update-yank-menu (string old)
 586   (let ((front (car (cdr yank-menu)))
 587         (menu-string (if (<= (length string) yank-menu-length)
 588                          string
 589                        (concat
 590                         (substring string 0 (/ yank-menu-length 2))
 591                         "..."
 592                         (substring string (- (/ yank-menu-length 2)))))))
 593     ;; Don't let the menu string be all dashes
 594     ;; because that has a special meaning in a menu.
 595     (if (string-match "\\`-+\\'" menu-string)
 596         (setq menu-string (concat menu-string " ")))
 597     ;; If we're supposed to be extending an existing string, and that
 598     ;; string really is at the front of the menu, then update it in place.
 599     (if (and old (or (eq old (car front))
 600                      (string= old (car front))))
 601         (progn
 602           (setcar front string)
 603           (setcar (cdr front) menu-string))
 604       (setcdr yank-menu
 605               (cons
 606                (cons string (cons menu-string 'menu-bar-select-yank))
 607                (cdr yank-menu)))))
 608   (if (> (length (cdr yank-menu)) kill-ring-max)
 609       (setcdr (nthcdr kill-ring-max yank-menu) nil)))
 610
 611 (put 'menu-bar-select-yank 'apropos-inhibit t)
 612 (defun menu-bar-select-yank ()
 613   (interactive "*")
 614   (push-mark (point))
 615   (insert last-command-event))
 616 \f
 617 ;; This definition is just to show what this looks like.
 618 ;; It gets overridden below when menu-bar-update-buffers is called.
 619 (define-key global-map [menu-bar buffer]
 620   (cons "Buffers" (make-sparse-keymap "Buffers")))
 621
 622 (defvar list-buffers-directory nil)
 623
 624 (defvar menu-bar-update-buffers-maxbuf)
 625
 626 (defun menu-bar-select-buffer ()
 627   (interactive)
 628   (switch-to-buffer last-command-event))
 629
 630 (defun menu-bar-select-frame ()
 631   (interactive)
 632   (make-frame-visible last-command-event)
 633   (raise-frame last-command-event)
 634   (select-frame last-command-event))
 635
 636 (defun menu-bar-update-buffers-1 (elt)
 637   (cons (format
 638          (format "%%%ds  %%s%%s  %%s" menu-bar-update-buffers-maxbuf)
 639          (cdr elt)
 640          (if (buffer-modified-p (car elt))
 641              "*" " ")
 642          (save-excursion
 643            (set-buffer (car elt))
 644            (if buffer-read-only "%" " "))
 645          (let ((file
 646                 (or (buffer-file-name (car elt))
 647                     (save-excursion
 648                       (set-buffer (car elt))
 649                       list-buffers-directory)
 650                     "")))
 651            (setq file (or (file-name-directory file)
 652                           ""))
 653            (if (> (length file) 20)
 654                (setq file (concat "..." (substring file -17))))
 655            file))
 656         (car elt)))
 657
 658 (defvar menu-bar-buffers-menu-list-buffers-entry nil)
 659
 660 (defun menu-bar-update-buffers ()
 661   ;; If user discards the Buffers item, play along.
 662   (and (lookup-key (current-global-map) [menu-bar buffer])
 663        (frame-or-buffer-changed-p)
 664        (let ((buffers (buffer-list))
 665              (frames (frame-list))
 666              (maxlen 0)
 667              buffers-menu frames-menu)
 668          ;; If requested, list only the N most recently selected buffers.
 669          (if (and (integerp buffers-menu-max-size)
 670                   (> buffers-menu-max-size 1))
 671              (if (> (length buffers) buffers-menu-max-size)
 672                  (setcdr (nthcdr buffers-menu-max-size buffers) nil)))
 673
 674          ;; Make the menu of buffers proper.
 675          (setq buffers-menu
 676                (cons "Select Buffer"
 677                      (let* ((buffer-list
 678                              (mapcar 'list buffers))
 679                             tail
 680                             (menu-bar-update-buffers-maxbuf 0)
 681                             alist
 682                             head)
 683                        ;; Put into each element of buffer-list
 684                        ;; the name for actual display,
 685                        ;; perhaps truncated in the middle.
 686                        (setq tail buffer-list)
 687                        (while tail
 688                          (let ((name (buffer-name (car (car tail)))))
 689                            (setcdr (car tail)
 690                                    (if (> (length name) 27)
 691                                        (concat (substring name 0 12)
 692                                                "..."
 693                                                (substring name -12))
 694                                      name)))
 695                          (setq tail (cdr tail)))
 696                        ;; Compute the maximum length of any name.
 697                        (setq tail buffer-list)
 698                        (while tail
 699                          (or (eq ?\ (aref (cdr (car tail)) 0))
 700                              (setq menu-bar-update-buffers-maxbuf
 701                                    (max menu-bar-update-buffers-maxbuf
 702                                         (length (cdr (car tail))))))
 703                          (setq tail (cdr tail)))
 704                        ;; Set ALIST to an alist of the form
 705                        ;; ITEM-STRING . BUFFER
 706                        (setq tail buffer-list)
 707                        (while tail
 708                          (let ((elt (car tail)))
 709                            (or (eq ?\ (aref (cdr elt) 0))
 710                                (setq alist (cons
 711                                             (menu-bar-update-buffers-1 elt)
 712                                             alist)))
 713                            (and alist (> (length (car (car alist))) maxlen)
 714                                 (setq maxlen (length (car (car alist))))))
 715                          (setq tail (cdr tail)))
 716                        (setq alist (nreverse alist))
 717                        ;; Make the menu item for list-buffers
 718                        ;; or reuse the one we already have.
 719                        ;; The advantage in reusing one
 720                        ;; is that it already has the keyboard equivalent
 721                        ;; cached, so we save the time to look that up again.
 722                        (or menu-bar-buffers-menu-list-buffers-entry
 723                            (setq menu-bar-buffers-menu-list-buffers-entry
 724                                  (cons
 725                                   'list-buffers
 726                                   (cons
 727                                    ""
 728                                    'list-buffers))))
 729                        ;; Update the item string for menu's new width.
 730                        (setcar (cdr menu-bar-buffers-menu-list-buffers-entry)
 731                                (concat (make-string (max (- (/ maxlen 2) 8) 0)
 732                                                     ?\ )
 733                                        "List All Buffers"))
 734                        ;; Now make the actual list of items,
 735                        ;; ending with the list-buffers item.
 736                        (nconc (mapcar '(lambda (pair)
 737                                          ;; This is somewhat risque, to use
 738                                          ;; the buffer name itself as the event
 739                                          ;; type to define, but it works.
 740                                          ;; It would not work to use the buffer
 741                                          ;; since a buffer as an event has its
 742                                          ;; own meaning.
 743                                          (nconc (list (buffer-name (cdr pair))
 744                                                       (car pair)
 745                                                       (cons nil nil))
 746                                                 'menu-bar-select-buffer))
 747                                       alist)
 748                               (list menu-bar-buffers-menu-list-buffers-entry)))))
 749
 750
 751          ;; Make a Frames menu if we have more than one frame.
 752          (if (cdr frames)
 753              (let ((name (concat (make-string (max (- (/ maxlen 2) 3) 0)
 754                                               ?\ )
 755                                  "Frames"))
 756                    (frames-menu
 757                     (cons 'keymap
 758                           (cons "Select Frame"
 759                                 (mapcar '(lambda (frame)
 760                                            (nconc (list frame
 761                                                         (cdr (assq 'name
 762                                                                    (frame-parameters frame)))
 763                                                         (cons nil nil))
 764                                                   'menu-bar-select-frame))
 765                                         frames)))))
 766                ;; Put it underneath the Buffers menu.
 767                (setq buffers-menu (cons (cons 'frames (cons name frames-menu))
 768                                         buffers-menu))))
 769          (if buffers-menu
 770              (setq buffers-menu (cons 'keymap buffers-menu)))
 771          (define-key (current-global-map) [menu-bar buffer]
 772            (cons "Buffers" buffers-menu)))))
 773
 774 (add-hook 'menu-bar-update-hook 'menu-bar-update-buffers)
 775
 776 (menu-bar-update-buffers)
 777
 778 ;; this version is too slow
 779 ;;;(defun format-buffers-menu-line (buffer)
 780 ;;;  "Returns a string to represent the given buffer in the Buffer menu.
 781 ;;;nil means the buffer shouldn't be listed.  You can redefine this."
 782 ;;;  (if (string-match "\\` " (buffer-name buffer))
 783 ;;;      nil
 784 ;;;    (save-excursion
 785 ;;;     (set-buffer buffer)
 786 ;;;     (let ((size (buffer-size)))
 787 ;;;       (format "%s%s %-19s %6s %-15s %s"
 788 ;;;            (if (buffer-modified-p) "*" " ")
 789 ;;;            (if buffer-read-only "%" " ")
 790 ;;;            (buffer-name)
 791 ;;;            size
 792 ;;;            mode-name
 793 ;;;            (or (buffer-file-name) ""))))))
 794 \f
 795 ;;; Set up a menu bar menu for the minibuffer.
 796
 797 (mapcar
 798  (function
 799   (lambda (map)
 800     (define-key map [menu-bar minibuf]
 801       (cons "Minibuf" (make-sparse-keymap "Minibuf")))))
 802  (list minibuffer-local-ns-map
 803        minibuffer-local-must-match-map
 804        minibuffer-local-isearch-map
 805        minibuffer-local-map
 806        minibuffer-local-completion-map))
 807
 808 (mapcar
 809  (function
 810   (lambda (map)
 811     (define-key map [menu-bar minibuf ?\?]
 812       '("List Completions" . minibuffer-completion-help))
 813     (define-key map [menu-bar minibuf space]
 814       '("Complete Word" . minibuffer-complete-word))
 815     (define-key map [menu-bar minibuf tab]
 816       '("Complete" . minibuffer-complete))
 817     ))
 818  (list minibuffer-local-must-match-map
 819        minibuffer-local-completion-map))
 820
 821 (mapcar
 822  (function
 823   (lambda (map)
 824     (define-key map [menu-bar minibuf quit]
 825       '("Quit" . keyboard-escape-quit))
 826     (define-key map [menu-bar minibuf return]
 827       '("Enter" . exit-minibuffer))
 828     ))
 829  (list minibuffer-local-ns-map
 830        minibuffer-local-must-match-map
 831        minibuffer-local-isearch-map
 832        minibuffer-local-map
 833        minibuffer-local-completion-map))
 834 \f
 835 (defcustom menu-bar-mode nil
 836   "Toggle display of a menu bar on each frame.
 837 Setting this variable directly does not take effect;
 838 use either \\[customize] or the function `menu-bar-mode'."
 839   :set (lambda (symbol value)
 840          (menu-bar-mode (or value 0)))
 841   :initialize 'custom-initialize-default
 842   :type 'boolean
 843   :group 'frames)
 844
 845 (defun menu-bar-mode (flag)
 846   "Toggle display of a menu bar on each frame.
 847 This command applies to all frames that exist and frames to be
 848 created in the future.
 849 With a numeric argument, if the argument is positive,
 850 turn on menu bars; otherwise, turn off menu bars."
 851  (interactive "P")
 852
 853   ;; Make menu-bar-mode and default-frame-alist consistent.
 854   (let ((default (assq 'menu-bar-lines default-frame-alist)))
 855     (if default
 856         (setq menu-bar-mode (not (eq (cdr default) 0)))
 857       (setq default-frame-alist
 858             (cons (cons 'menu-bar-lines (if menu-bar-mode 1 0))
 859                   default-frame-alist))))
 860
 861   ;; Toggle or set the mode, according to FLAG.
 862  (setq menu-bar-mode (if (null flag) (not menu-bar-mode)
 863                        (> (prefix-numeric-value flag) 0)))
 864
 865  ;; Apply it to default-frame-alist.
 866  (let ((parameter (assq 'menu-bar-lines default-frame-alist)))
 867    (if (consp parameter)
 868        (setcdr parameter (if menu-bar-mode 1 0))
 869      (setq default-frame-alist
 870            (cons (cons 'menu-bar-lines (if menu-bar-mode 1 0))
 871                  default-frame-alist))))
 872
 873  ;; Apply it to existing frames.
 874  (let ((frames (frame-list)))
 875    (while frames
 876      (let ((height (cdr (assq 'height (frame-parameters (car frames))))))
 877        (modify-frame-parameters (car frames)
 878                                 (list (cons 'menu-bar-lines
 879                                           (if menu-bar-mode 1 0))))
 880        (modify-frame-parameters (car frames)
 881                                 (list (cons 'height height))))
 882      (setq frames (cdr frames)))))
 883
 884 (provide 'menu-bar)
 885
 886 ;;; menu-bar.el ends here