lisp/menu-bar.el

   1 ;;; menu-bar.el --- define a default menu bar
   2
   3 ;; Copyright (C) 1993, 1994, 1995, 2000, 2001 Free Software Foundation, Inc.
   4
   5 ;; Author: RMS
   6 ;; Maintainer: FSF
   7 ;; Keywords: internal, mouse
   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 ;;; Commentary:
  29
  30 ;;; Code:
  31
  32 ;;; User options:
  33
  34 (defcustom buffers-menu-max-size 10
  35   "*Maximum number of entries which may appear on the Buffers menu.
  36 If this is 10, then only the ten most-recently-selected buffers are shown.
  37 If this is nil, then all buffers are shown.
  38 A large number or nil slows down menu responsiveness."
  39   :type '(choice integer
  40                  (const :tag "All" nil))
  41   :group 'mouse)
  42
  43 ;; Don't clobber an existing menu-bar keymap, to preserve any menu-bar key
  44 ;; definitions made in loaddefs.el.
  45 (or (lookup-key global-map [menu-bar])
  46     (define-key global-map [menu-bar] (make-sparse-keymap "menu-bar")))
  47 (defvar menu-bar-help-menu (make-sparse-keymap "Help"))
  48
  49 ;; Force Help item to come last, after the major mode's own items.
  50 ;; The symbol used to be called `help', but that gets confused with the
  51 ;; help key.
  52 (setq menu-bar-final-items '(help-menu))
  53
  54 (define-key global-map [menu-bar help-menu] (cons "Help" menu-bar-help-menu))
  55 (defvar menu-bar-tools-menu (make-sparse-keymap "Tools"))
  56 (define-key global-map [menu-bar tools] (cons "Tools" menu-bar-tools-menu))
  57 ;; This definition is just to show what this looks like.
  58 ;; It gets overridden below when menu-bar-update-buffers is called.
  59 (define-key global-map [menu-bar buffer]
  60   (cons "Buffers" (make-sparse-keymap "Buffers")))
  61 (defvar menu-bar-options-menu (make-sparse-keymap "Options"))
  62 (define-key global-map [menu-bar options]
  63   (cons "Options" menu-bar-options-menu))
  64 (defvar menu-bar-edit-menu (make-sparse-keymap "Edit"))
  65 (define-key global-map [menu-bar edit] (cons "Edit" menu-bar-edit-menu))
  66 (defvar menu-bar-files-menu (make-sparse-keymap "File"))
  67 (define-key global-map [menu-bar files] (cons "File" menu-bar-files-menu))
  68
  69 ;; This alias is for compatibility with 19.28 and before.
  70 (defvar menu-bar-file-menu menu-bar-files-menu)
  71 \f
  72 ;; The "File" menu items
  73 (define-key menu-bar-files-menu [exit-emacs]
  74   '(menu-item "Exit Emacs" save-buffers-kill-emacs
  75               :help "Save unsaved buffers, then exit"))
  76
  77 (define-key menu-bar-files-menu [separator-exit]
  78   '("--"))
  79
  80 ;; Don't use delete-frame as event name because that is a special
  81 ;; event.
  82 (define-key menu-bar-files-menu [delete-this-frame]
  83   '(menu-item "Delete Frame" delete-frame
  84               :visible (fboundp 'delete-frame)
  85               :enable (delete-frame-enabled-p)
  86               :help "Delete currently selected frame"))
  87 (define-key menu-bar-files-menu [make-frame-on-display]
  88   '(menu-item "New Frame on Display..." make-frame-on-display
  89               :visible (fboundp 'make-frame-on-display)
  90               :help "Open a new frame on another display"))
  91 (define-key menu-bar-files-menu [make-frame]
  92   '(menu-item "New Frame" make-frame-command
  93               :visible (fboundp 'make-frame-command)
  94               :help "Open a new frame"))
  95
  96 (define-key menu-bar-files-menu [one-window]
  97   '(menu-item "Unsplit Windows" delete-other-windows
  98               :enable (not (one-window-p t nil))
  99               :help "Make selected window fill its frame"))
 100
 101 (define-key menu-bar-files-menu [split-window]
 102   '(menu-item "Split Window" split-window-vertically
 103               :help "Split selected window in two"))
 104
 105 (define-key menu-bar-files-menu [separator-window]
 106   '(menu-item "--"))
 107
 108 (define-key menu-bar-files-menu [ps-print-region]
 109   '(menu-item "Postscript Print Region (B+W)" ps-print-region
 110               :enable mark-active
 111               :help "Pretty-print marked region in black and white to PostScript printer"))
 112 (define-key menu-bar-files-menu [ps-print-buffer]
 113   '(menu-item "Postscript Print Buffer (B+W)" ps-print-buffer
 114               :help "Pretty-print current buffer in black and white to PostScript printer"))
 115 (define-key menu-bar-files-menu [ps-print-region-faces]
 116   '(menu-item "Postscript Print Region" ps-print-region-with-faces
 117               :enable mark-active
 118               :help "Pretty-print marked region to PostScript printer"))
 119 (define-key menu-bar-files-menu [ps-print-buffer-faces]
 120   '(menu-item "Postscript Print Buffer" ps-print-buffer-with-faces
 121               :help "Pretty-print current buffer to PostScript printer"))
 122 (define-key menu-bar-files-menu [print-region]
 123   '(menu-item "Print Region" print-region
 124               :enable mark-active
 125               :help "Print region between mark and current position"))
 126 (define-key menu-bar-files-menu [print-buffer]
 127   '(menu-item "Print Buffer" print-buffer
 128               :help "Print current buffer with page headings"))
 129
 130 (define-key menu-bar-files-menu [separator-print]
 131   '(menu-item "--"))
 132
 133 (define-key menu-bar-files-menu [recover-session]
 134   '(menu-item "Recover Crashed Session..." recover-session
 135               :enable (and auto-save-list-file-prefix
 136                            (file-directory-p
 137                             (file-name-directory auto-save-list-file-prefix))
 138                            (directory-files
 139                             (file-name-directory auto-save-list-file-prefix)
 140                             nil
 141                             (concat "\\`"
 142                                     (regexp-quote
 143                                      (file-name-nondirectory
 144                                       auto-save-list-file-prefix)))
 145                             t))
 146               :help "Recover edits from a crashed session"))
 147 (define-key menu-bar-files-menu [revert-buffer]
 148   '(menu-item "Revert Buffer" revert-buffer
 149               :enable (or revert-buffer-function
 150                           revert-buffer-insert-file-contents-function
 151                           (and (buffer-file-name)
 152                                (or (buffer-modified-p)
 153                                    (not (verify-visited-file-modtime
 154                                          (current-buffer))))))
 155               :help "Re-read current buffer from its file"))
 156 (define-key menu-bar-files-menu [write-file]
 157   '(menu-item "Save Buffer As..." write-file
 158               :enable (not (window-minibuffer-p
 159                             (frame-selected-window menu-updating-frame)))
 160               :help "Write current buffer to another file"))
 161 (define-key menu-bar-files-menu [save-buffer]
 162   '(menu-item "Save (current buffer)" save-buffer
 163               :enable (and (buffer-modified-p)
 164                            (buffer-file-name)
 165                            (not (window-minibuffer-p
 166                                  (frame-selected-window menu-updating-frame))))
 167               :help "Save current buffer to its file"))
 168
 169 (define-key menu-bar-files-menu [separator-save]
 170   '(menu-item "--"))
 171
 172 (define-key menu-bar-files-menu [kill-buffer]
 173   '(menu-item "Close (current buffer)" kill-this-buffer
 174               :enable (kill-this-buffer-enabled-p)
 175               :help "Discard current buffer"))
 176 (define-key menu-bar-files-menu [insert-file]
 177   '(menu-item "Insert File..." insert-file
 178               :enable (not (window-minibuffer-p
 179                             (frame-selected-window menu-updating-frame)))
 180               :help "Insert another file into current buffer"))
 181 (define-key menu-bar-files-menu [dired]
 182   '(menu-item "Open Directory..." dired
 183               :help "Read a directory, operate on its files"))
 184 (define-key menu-bar-files-menu [open-file]
 185   '(menu-item "Open File..." find-file
 186               :enable (not (window-minibuffer-p
 187                             (frame-selected-window menu-updating-frame)))
 188               :help "Read a file into an Emacs buffer"))
 189
 190 \f
 191 ;; The "Edit" menu items
 192 (defun nonincremental-search-forward (string)
 193   "Read a string and search for it nonincrementally."
 194   (interactive "sSearch for string: ")
 195   (if (equal string "")
 196       (search-forward (car search-ring))
 197     (isearch-update-ring string nil)
 198     (search-forward string)))
 199
 200 (defun nonincremental-search-backward (string)
 201   "Read a string and search backward for it nonincrementally."
 202   (interactive "sSearch for string: ")
 203   (if (equal string "")
 204       (search-backward (car search-ring))
 205     (isearch-update-ring string nil)
 206     (search-backward string)))
 207
 208 (defun nonincremental-re-search-forward (string)
 209   "Read a regular expression and search for it nonincrementally."
 210   (interactive "sSearch for regexp: ")
 211   (if (equal string "")
 212       (re-search-forward (car regexp-search-ring))
 213     (isearch-update-ring string t)
 214     (re-search-forward string)))
 215
 216 (defun nonincremental-re-search-backward (string)
 217   "Read a regular expression and search backward for it nonincrementally."
 218   (interactive "sSearch for regexp: ")
 219   (if (equal string "")
 220       (re-search-backward (car regexp-search-ring))
 221     (isearch-update-ring string t)
 222     (re-search-backward string)))
 223
 224 (defun nonincremental-repeat-search-forward ()
 225   "Search forward for the previous search string."
 226   (interactive)
 227   (if (null search-ring)
 228       (error "No previous search"))
 229   (search-forward (car search-ring)))
 230
 231 (defun nonincremental-repeat-search-backward ()
 232   "Search backward for the previous search string."
 233   (interactive)
 234   (if (null search-ring)
 235       (error "No previous search"))
 236   (search-backward (car search-ring)))
 237
 238 (defun nonincremental-repeat-re-search-forward ()
 239   "Search forward for the previous regular expression."
 240   (interactive)
 241   (if (null regexp-search-ring)
 242       (error "No previous search"))
 243   (re-search-forward (car regexp-search-ring)))
 244
 245 (defun nonincremental-repeat-re-search-backward ()
 246   "Search backward for the previous regular expression."
 247   (interactive)
 248   (if (null regexp-search-ring)
 249       (error "No previous search"))
 250   (re-search-backward (car regexp-search-ring)))
 251
 252 (defvar menu-bar-search-menu (make-sparse-keymap "Search"))
 253 (defvar menu-bar-adv-search-menu
 254   (make-sparse-keymap "Advanced Search/Replace"))
 255
 256 (define-key menu-bar-adv-search-menu [tags-continue]
 257   '(menu-item "Continue Tags Search/Replace" tags-loop-continue
 258               :help "Continue last tags search/replace operation"))
 259 (define-key menu-bar-adv-search-menu [tags-repl]
 260   '(menu-item "Replace in all tagged files" tags-query-replace
 261               :help "Interactively replace a regexp in all tagged files"))
 262 (define-key menu-bar-adv-search-menu [tags-srch]
 263   '(menu-item "Search in all tagged files" tags-search
 264               :help "Search for a regexp in all tagged files"))
 265
 266 (define-key menu-bar-adv-search-menu [separator-tag-search]
 267   '(menu-item "--"))
 268
 269 (define-key menu-bar-adv-search-menu [query-replace-regexp]
 270   '(menu-item "Replace Regexp..." query-replace-regexp
 271               :enable (not buffer-read-only)
 272               :help "Replace regular expression, ask about each occurrence"))
 273 (define-key menu-bar-adv-search-menu [repeat-regexp-back]
 274   '(menu-item "Repeat Regexp Backwards"
 275               nonincremental-repeat-re-search-backward
 276               :enable regexp-search-ring
 277               :help "Repeat last regular expression search backwards"))
 278 (define-key menu-bar-adv-search-menu [repeat-regexp-fwd]
 279   '(menu-item "Repeat Regexp" nonincremental-repeat-re-search-forward
 280               :enable regexp-search-ring
 281               :help "Repeat last regular expression search forward"))
 282 (define-key menu-bar-adv-search-menu [re-search-backward]
 283   '(menu-item "Search Regexp Backwards..." nonincremental-re-search-backward
 284               :help "Search backwards for a regular expression"))
 285 (define-key menu-bar-adv-search-menu [re-search-forward]
 286   '(menu-item "Search Regexp..." nonincremental-re-search-forward
 287               :help "Search forward for a regular expression"))
 288 (define-key menu-bar-search-menu [re-search]
 289   (list 'menu-item "Advanced Search/Replace" menu-bar-adv-search-menu
 290               :help "Regexp and Tags search and replace"))
 291
 292 (define-key menu-bar-search-menu [query-replace]
 293   '(menu-item "Replace..." query-replace
 294               :enable (not buffer-read-only)
 295               :help "Replace string interactively, ask about each occurrence"))
 296 (define-key menu-bar-search-menu [repeat-search-back]
 297   '(menu-item "Repeat Backwards" nonincremental-repeat-search-backward
 298               :enable search-ring
 299               :help "Repeat last search backwards"))
 300 (define-key menu-bar-search-menu [repeat-search-fwd]
 301   '(menu-item "Repeat Search" nonincremental-repeat-search-forward
 302               :enable search-ring
 303               :help "Repeat last search forward"))
 304 (define-key menu-bar-search-menu [search-backward]
 305   '(menu-item "Search Backwards..." nonincremental-search-backward
 306               :help "Search backwards for a string"))
 307 (define-key menu-bar-search-menu [search-forward]
 308   '(menu-item "Search..." nonincremental-search-forward
 309               :help "Search forward for a string"))
 310
 311 ;;; Assemble the top-level Edit menu items.
 312 (define-key menu-bar-edit-menu [props]
 313   '(menu-item "Text Properties" facemenu-menu
 314               :help "Change properties of text in region"))
 315
 316 (define-key menu-bar-search-menu [separator-search]
 317   '(menu-item "--"))
 318
 319 (define-key menu-bar-edit-menu [bookmark]
 320   '(menu-item "Bookmarks" menu-bar-bookmark-map
 321               :help "Record positions and jump between them"))
 322
 323 (define-key menu-bar-edit-menu [separator-bookmark]
 324   '(menu-item "--"))
 325
 326 (defvar menu-bar-goto-menu (make-sparse-keymap "Go To"))
 327
 328 (define-key menu-bar-goto-menu [set-tags-name]
 329   '(menu-item "Set Tags File Name" visit-tags-table
 330               :help "Tell Tags commands which tag table file to use"))
 331
 332 (define-key menu-bar-goto-menu [separator-tag-file]
 333   '(menu-item "--"))
 334
 335 (define-key menu-bar-goto-menu [apropos-tags]
 336   '(menu-item "Tags Apropos" tags-apropos
 337               :help "Find function/variables whose names match regexp"))
 338 (define-key menu-bar-goto-menu [next-tag-otherw]
 339   '(menu-item "Next Tag in Other Window"
 340               (function (lambda () (find-tag-other-window nil t)))
 341               :enable (and (boundp 'tags-location-ring)
 342                            (not (ring-empty-p tags-location-ring)))
 343               :help "Find next function/variable matching last tag name in another window"))
 344 (define-key menu-bar-goto-menu [next-tag]
 345   '(menu-item "Find Next Tag"
 346               (function (lambda () (find-tag nil t)))
 347               :enable (and (boundp 'tags-location-ring)
 348                            (not (ring-empty-p tags-location-ring)))
 349               :help "Find next function/variable matching last tag name"))
 350 (define-key menu-bar-goto-menu [find-tag-otherw]
 351   '(menu-item "Find Tag in Other Window..." find-tag-other-window
 352               :help "Find function/variable definition in another window"))
 353 (define-key menu-bar-goto-menu [find-tag]
 354   '(menu-item "Find Tag..." find-tag
 355               :help "Find definition of function or variable"))
 356
 357 (define-key menu-bar-goto-menu [separator-tags]
 358   '(menu-item "--"))
 359
 360 (define-key menu-bar-goto-menu [end-of-buf]
 361   '(menu-item "Goto End of Buffer" end-of-buffer))
 362 (define-key menu-bar-goto-menu [beg-of-buf]
 363   '(menu-item "Goto Beginning of Buffer" beginning-of-buffer))
 364 (define-key menu-bar-goto-menu [go-to-pos]
 365   '(menu-item "Goto Buffer Position..." goto-char
 366               :help "Read a number N and go to buffer position N"))
 367 (define-key menu-bar-goto-menu [go-to-line]
 368   '(menu-item "Goto Line..." goto-line
 369               :help "Read a line number and go to that line"))
 370
 371 (define-key menu-bar-edit-menu [goto]
 372   (list 'menu-item "Go To" menu-bar-goto-menu))
 373
 374 (define-key menu-bar-edit-menu [search]
 375   (list 'menu-item "Search" menu-bar-search-menu))
 376
 377 (define-key menu-bar-edit-menu [fill]
 378   '(menu-item "Fill" fill-region
 379               :enable (and mark-active (not buffer-read-only))
 380               :help
 381               "Fill text in region to fit between left and right margin"))
 382 (define-key menu-bar-edit-menu [mark-whole-buffer]
 383   '(menu-item "Select All" mark-whole-buffer
 384               :help "Mark the whole buffer for a subsequent cut/copy."))
 385 (define-key menu-bar-edit-menu [clear]
 386   '(menu-item "Clear" delete-region
 387               :enable (and mark-active
 388                            (not buffer-read-only)
 389                            (not (mouse-region-match)))
 390               :help
 391               "Delete the text in region between mark and current position"))
 392 (defvar yank-menu (cons "Select Yank" nil))
 393 (fset 'yank-menu (cons 'keymap yank-menu))
 394 (define-key menu-bar-edit-menu [select-paste]
 395   '(menu-item "Select and Paste" yank-menu
 396               :enable (and (cdr yank-menu) (not buffer-read-only))
 397               :help "Paste text cut/copied earlier"))
 398 (define-key menu-bar-edit-menu [paste]
 399   '(menu-item "Paste" yank
 400               :enable (and (x-selection-exists-p) (not buffer-read-only))
 401               :help "Paste text most recently cut/copied"))
 402 (define-key menu-bar-edit-menu [copy]
 403   '(menu-item "Copy" menu-bar-kill-ring-save
 404               :enable mark-active
 405               :help "Copy text in region between mark and current position"))
 406 (define-key menu-bar-edit-menu [cut]
 407   '(menu-item "Cut" kill-region
 408               :enable (and mark-active (not buffer-read-only))
 409               :help
 410               "Cut (kill) text in region between mark and current position"))
 411 (define-key menu-bar-edit-menu [undo]
 412   '(menu-item "Undo" undo
 413               :enable (and (not buffer-read-only)
 414                            (not (eq t buffer-undo-list))
 415                            (if (eq last-command 'undo)
 416                                pending-undo-list
 417                              (consp buffer-undo-list)))
 418               :help "Undo last operation"))
 419
 420
 421 (defun menu-bar-kill-ring-save (beg end)
 422   (interactive "r")
 423   (if (mouse-region-match)
 424       (message "Selecting a region with the mouse does `copy' automatically")
 425     (kill-ring-save beg end)))
 426
 427 (autoload 'ispell-menu-map "ispell" nil t 'keymap)
 428
 429 ;; These are alternative definitions for the cut, paste and copy
 430 ;; menu items.  Use them if your system expects these to use the clipboard.
 431
 432 (put 'clipboard-kill-region 'menu-enable 'mark-active)
 433 (put 'clipboard-kill-ring-save 'menu-enable 'mark-active)
 434 (put 'clipboard-yank 'menu-enable
 435      '(or (x-selection-exists-p) (x-selection-exists-p 'CLIPBOARD)))
 436
 437 (defun clipboard-yank ()
 438   "Insert the clipboard contents, or the last stretch of killed text."
 439   (interactive)
 440   (let ((x-select-enable-clipboard t))
 441     (yank)))
 442
 443 (defun clipboard-kill-ring-save (beg end)
 444   "Copy region to kill ring, and save in the X clipboard."
 445   (interactive "r")
 446   (let ((x-select-enable-clipboard t))
 447     (kill-ring-save beg end)))
 448
 449 (defun clipboard-kill-region (beg end)
 450   "Kill the region, and save it in the X clipboard."
 451   (interactive "r")
 452   (let ((x-select-enable-clipboard t))
 453     (kill-region beg end)))
 454
 455 (defun menu-bar-enable-clipboard ()
 456   "Make CUT, PASTE and COPY (keys and menu bar items) use the clipboard.
 457 Do the same for the keys of the same name."
 458   (interactive)
 459   ;; We can't use constant list structure here because it becomes pure,
 460   ;; and because it gets modified with cache data.
 461   (define-key menu-bar-edit-menu [paste]
 462     (cons "Paste" (cons "Paste text from clipboard" 'clipboard-yank)))
 463   (define-key menu-bar-edit-menu [copy]
 464     (cons "Copy" (cons "Copy text in region to the clipboard"
 465                        'clipboard-kill-ring-save)))
 466   (define-key menu-bar-edit-menu [cut]
 467     (cons "Cut" (cons "Delete text in region and copy it to the clipboard"
 468                       'clipboard-kill-region)))
 469
 470   (define-key global-map [f20] 'clipboard-kill-region)
 471   (define-key global-map [f16] 'clipboard-kill-ring-save)
 472   (define-key global-map [f18] 'clipboard-yank)
 473   ;; X11R6 versions
 474   (define-key global-map [cut] 'clipboard-kill-region)
 475   (define-key global-map [copy] 'clipboard-kill-ring-save)
 476   (define-key global-map [paste] 'clipboard-yank))
 477 \f
 478 ;; The "Options" menu items
 479
 480 (defvar menu-bar-custom-menu (make-sparse-keymap "Customize"))
 481
 482 (define-key menu-bar-custom-menu [customize-apropos-groups]
 483   '(menu-item "Groups Matching Regexp..." customize-apropos-groups
 484               :help "Browse groups whose names match regexp"))
 485 (define-key menu-bar-custom-menu [customize-apropos-faces]
 486   '(menu-item "Faces Matching Regexp..." customize-apropos-faces
 487               :help "Browse faces whose names match regexp"))
 488 (define-key menu-bar-custom-menu [customize-apropos-options]
 489   '(menu-item "Options Matching Regexp..." customize-apropos-options
 490               :help "Browse options whose names match regexp"))
 491 (define-key menu-bar-custom-menu [customize-apropos]
 492   '(menu-item "Settings Matching Regexp..." customize-apropos
 493               :help "Browse customizable settings whose names match regexp"))
 494 (define-key menu-bar-custom-menu [separator-2]
 495   '("--"))
 496 (define-key menu-bar-custom-menu [customize-group]
 497   '(menu-item "Specific Group..." customize-group
 498               :help "Customize settings of specific group"))
 499 (define-key menu-bar-custom-menu [customize-face]
 500   '(menu-item "Specific Face..." customize-face
 501               :help "Customize attributes of specific face"))
 502 (define-key menu-bar-custom-menu [customize-option]
 503   '(menu-item "Specific Option..." customize-option
 504               :help "Change value of specific option"))
 505 (define-key menu-bar-custom-menu [customize-changed-options]
 506   '(menu-item "Recently Changed Options..." customize-changed-options
 507               :help "Customize options changed in recent versions"))
 508 (define-key menu-bar-custom-menu [separator-3]
 509   '("--"))
 510 (define-key menu-bar-custom-menu [customize-browse]
 511   '(menu-item "Browse Customization Groups" customize-browse
 512               :help "Browse all customization groups"))
 513 (define-key menu-bar-custom-menu [customize]
 514   '(menu-item "Top-level Customization Group" customize
 515               :help "The master group called `Emacs'"))
 516
 517 ;(defvar menu-bar-preferences-menu (make-sparse-keymap "Preferences"))
 518
 519 (defmacro menu-bar-make-toggle (name variable doc message help &rest body)
 520   `(progn
 521      (defun ,name ()
 522        ,(concat "Toggle whether to " (downcase (substring help 0 1))
 523                 (substring help 1) ".")
 524        (interactive)
 525        (if ,(if body `(progn . ,body)
 526               `(setq ,variable (not ,variable)))
 527            (message ,message "enabled")
 528          (message ,message "disabled")))
 529      '(menu-item ,doc ,name
 530                  :help ,help
 531                  :button (:toggle . (and (boundp ',variable) ,variable)))))
 532
 533 ;;; Assemble all the top-level items of the "Options" menu
 534 (define-key menu-bar-options-menu [customize]
 535   (list 'menu-item "Customize Emacs" menu-bar-custom-menu
 536         :help "Full customization of every Emacs feature"))
 537
 538 (defun menu-bar-options-save ()
 539   "Save current values of Options menu items using Custom."
 540   (interactive)
 541   (dolist (elt '(debug-on-quit debug-on-error auto-compression-mode
 542                  case-fold-search truncate-lines show-paren-mode
 543                  transient-mark-mode global-font-lock-mode
 544                  current-language-environment default-input-method))
 545     (if (default-value elt)
 546         (customize-save-variable elt (default-value elt))))
 547   (if (memq 'turn-on-auto-fill text-mode-hook)
 548       (customize-save-variable 'text-mode-hook
 549                                (default-value 'text-mode-hook)))
 550   (if (featurep 'saveplace)
 551       (customize-save-variable 'save-place (default-value 'save-place)))
 552   (if (featurep 'uniquify)
 553       (customize-save-variable 'uniquify-buffer-name-style
 554                                (default-value 'uniquify-buffer-name-style))))
 555
 556 (define-key menu-bar-options-menu [save]
 557   '(menu-item "Save Options" menu-bar-options-save
 558               :help "Save options set from the menu above"))
 559
 560 (define-key menu-bar-options-menu [custom-separator]
 561   '("--"))
 562
 563 (define-key menu-bar-options-menu [mule]
 564   ;; It is better not to use backquote here,
 565   ;; because that makes a bootstrapping problem
 566   ;; if you need to recompile all the Lisp files using interpreted code.
 567   (list 'menu-item "Mule (Multilingual Environment)" mule-menu-keymap
 568 ;; Most of the MULE menu actually does make sense in unibyte mode,
 569 ;; e.g. language selection.
 570 ;;;     ':visible 'default-enable-multibyte-characters
 571         ':help "Default language, encodings, input method"))
 572 ;(setq menu-bar-final-items (cons 'mule menu-bar-final-items))
 573 ;(define-key menu-bar-options-menu [preferences]
 574 ;  (list 'menu-item "Preferences" menu-bar-preferences-menu
 575 ;       :help "Toggle important global options"))
 576
 577 (define-key menu-bar-options-menu [mule-separator]
 578   '("--"))
 579
 580 (define-key menu-bar-options-menu [debug-on-quit]
 581   (menu-bar-make-toggle toggle-debug-on-quit debug-on-quit
 582                         "Enter Debugger on Quit/C-g" "Debug on Quit %s"
 583                         "Enter Lisp debugger when C-g is pressed"))
 584 (define-key menu-bar-options-menu [debug-on-error]
 585   (menu-bar-make-toggle toggle-debug-on-error debug-on-error
 586                         "Enter Debugger on Error" "Debug on Error %s"
 587                         "Enter Lisp debugger when an error is signaled"))
 588 (define-key menu-bar-options-menu [debugger-separator]
 589   '("--"))
 590 (define-key menu-bar-options-menu [toggle-auto-compression]
 591   '(menu-item "Automatic File De/compression"
 592              auto-compression-mode
 593              :help "Transparently decompress compressed files"
 594              :button (:toggle . (rassq 'jka-compr-handler
 595                                        file-name-handler-alist))))
 596 (define-key menu-bar-options-menu [save-place]
 597   (menu-bar-make-toggle toggle-save-place-globally save-place
 598                         "Save Place in Files between Sessions"
 599                         "Saving place in files %s"
 600                         "Save Emacs state for next session"
 601                         (require 'saveplace)
 602                         (setq-default save-place
 603                                       (not (default-value save-place)))))
 604 (define-key menu-bar-options-menu [uniquify]
 605   (menu-bar-make-toggle toggle-uniquify-buffer-names uniquify-buffer-name-style
 606                         "Use Directory Names in Buffer Names"
 607                         "Directory name in buffer names (uniquify) %s"
 608                         "Uniquify buffer names by adding parent directory names"
 609                         (require 'uniquify)
 610                         (setq uniquify-buffer-name-style
 611                               (if (not uniquify-buffer-name-style)
 612                                   'forward))))
 613 (define-key menu-bar-options-menu [edit-options-separator]
 614   '("--"))
 615 (define-key menu-bar-options-menu [case-fold-search]
 616   (menu-bar-make-toggle toggle-case-fold-search case-fold-search
 617                         "Case-Insensitive Search"
 618                         "Case-Insensitive Search %s"
 619                         "Ignore letter-case in search"))
 620 (define-key menu-bar-options-menu [auto-fill-mode]
 621   '(menu-item "Word Wrap in Text Modes (Auto Fill)"
 622               toggle-text-mode-auto-fill
 623               :help "Automatically fill text between left and right margins"
 624               :button (:toggle . (member 'turn-on-auto-fill text-mode-hook))))
 625 (define-key menu-bar-options-menu [truncate-lines]
 626   (menu-bar-make-toggle
 627    toggle-truncate-lines truncate-lines
 628    "Truncate Long Lines in this Buffer" "Long Line Truncation %s"
 629    "Truncate long lines on the screen"
 630    (prog1 (setq truncate-lines (not truncate-lines))
 631      (set-buffer-modified-p (buffer-modified-p)))))
 632 (define-key menu-bar-options-menu [highlight-separator]
 633   '("--"))
 634 (define-key menu-bar-options-menu [highlight-paren-mode]
 635   (menu-bar-make-toggle toggle-highlight-paren-mode show-paren-mode
 636                         "Highlight Matching Parentheses"
 637                         "Show Paren mode %s"
 638                         "Highlight matching and mismatched parentheses"
 639                         (show-paren-mode)))
 640 (define-key menu-bar-options-menu [transient-mark-mode]
 641   (menu-bar-make-toggle toggle-transient-mark-mode transient-mark-mode
 642                         "Transient Mark Mode (highlights region)"
 643                         "Transient Mark mode %s"
 644                         "Highlight the marked region when it's active"))
 645 (define-key menu-bar-options-menu [toggle-global-lazy-font-lock-mode]
 646   (menu-bar-make-toggle toggle-global-lazy-font-lock-mode global-font-lock-mode
 647                         "Highlight Syntax (Global Font Lock)"
 648                         "Syntax Highlighting %s"
 649                         "Highlight text based on language syntax"
 650                         (global-font-lock-mode)))
 651
 652 \f
 653 ;; The "Tools" menu items
 654
 655 (defun send-mail-item-name ()
 656   (let* ((known-send-mail-commands '((sendmail-user-agent . "sendmail")
 657                                      (mh-e-user-agent . "MH")
 658                                      (message-user-agent . "Gnus Message")
 659                                      (gnus-user-agent . "Gnus")))
 660          (name (assq mail-user-agent known-send-mail-commands)))
 661     (if name
 662         (setq name (cdr name))
 663       (setq name (symbol-name mail-user-agent))
 664       (if (string-match "\\(.+\\)-user-agent" name)
 665           (setq name (match-string 1 name))))
 666     name))
 667
 668 (defun read-mail-item-name ()
 669   (let* ((known-rmail-commands '((rmail . "RMAIL")
 670                                  (mh-rmail . "MH")
 671                                  (gnus . "Gnus")))
 672          (known (assq read-mail-command known-rmail-commands)))
 673     (if known (cdr known) (symbol-name read-mail-command))))
 674
 675 (defvar menu-bar-games-menu (make-sparse-keymap "Games"))
 676
 677 (define-key menu-bar-tools-menu [games]
 678   (list 'menu-item "Games" menu-bar-games-menu))
 679
 680 (define-key menu-bar-tools-menu [separator-games]
 681   '("--"))
 682
 683 (define-key menu-bar-games-menu [zone]
 684   '(menu-item "Zone Out"  zone
 685               :help "Play tricks with Emacs display when Emacs is idle"))
 686 (define-key menu-bar-games-menu [yow]
 687   '(menu-item "Random Quotation"  yow
 688               :help "Display a random Zippy quotation"))
 689 (define-key menu-bar-games-menu [tetris]
 690   '(menu-item "Tetris"  tetris))
 691 (define-key menu-bar-games-menu [solitaire]
 692   '(menu-item "Solitaire"  solitaire))
 693 (define-key menu-bar-games-menu [snake]
 694   '(menu-item "Snake"  snake
 695               :help "Move snake around avoiding collisions"))
 696 (define-key menu-bar-games-menu [mult]
 697   '(menu-item "Multiplication Puzzle"  mpuz
 698               :help "Excercise brain with multiplication"))
 699 (define-key menu-bar-games-menu [life]
 700   '(menu-item "Life"  life
 701               :help "Watch how John Conway's cellular automaton evolves"))
 702 (define-key menu-bar-games-menu [hanoi]
 703   '(menu-item "Towers of Hanoi" hanoi
 704               :help "Watch Towers-of-Hanoi puzzle solved by Emacs"))
 705 (define-key menu-bar-games-menu [gomoku]
 706   '(menu-item "Gomoku"  gomoku
 707               :help "Mark 5 contiguous squares (like tic-tac-toe)"))
 708 (define-key menu-bar-games-menu [black-box]
 709   '(menu-item "Blackbox"  blackbox
 710               :help "Find balls in a black box by shooting rays"))
 711 (define-key menu-bar-games-menu [adventure]
 712   '(menu-item "Adventure"  dunnet
 713               :help "Dunnet, a text Adventure game for Emacs"))
 714 (define-key menu-bar-games-menu [5x5]
 715   '(menu-item "5x5" 5x5
 716               :help "Fill in all the squares on a 5x5 board"))
 717
 718 (define-key menu-bar-tools-menu [calendar]
 719   '(menu-item "Display Calendar" calendar))
 720 (define-key menu-bar-tools-menu [speedbar]
 721   '(menu-item "Display Speedbar" speedbar-frame-mode))
 722 (define-key menu-bar-tools-menu [directory-search]
 723   '(menu-item "Directory Search" eudc-tools-menu
 724               :help "Query directory servers via LDAP, CCSO PH/QI or BBDB"))
 725 (define-key menu-bar-tools-menu [compose-mail]
 726   (list
 727    'menu-item `(format "Send Mail (with %s)" (send-mail-item-name))
 728    'compose-mail
 729    :visible `(and mail-user-agent (not (eq mail-user-agent 'ignore)))
 730    :help "Send a mail message"))
 731 (define-key menu-bar-tools-menu [rmail]
 732   (list
 733    'menu-item `(format "Read Mail (with %s)" (read-mail-item-name))
 734    (lambda ()
 735      (interactive)
 736      (call-interactively read-mail-command))
 737    :visible `(and read-mail-command (not (eq read-mail-command 'ignore)))
 738    :help "Read your mail and reply to it"))
 739 (define-key menu-bar-tools-menu [gnus]
 740   '(menu-item "Read Net News (Gnus)" gnus
 741               :help "Read network news groups"))
 742
 743 (define-key menu-bar-tools-menu [separator-vc]
 744   '("--"))
 745
 746 (defvar vc-menu-map (make-sparse-keymap "Version Control"))
 747 (define-key menu-bar-tools-menu [pcl-cvs]
 748   `(menu-item "PCL-CVS" ,cvs-global-menu
 749               :help "Module-level interface to CVS"))
 750 (define-key menu-bar-tools-menu [vc]
 751   (list 'menu-item "Version Control" vc-menu-map
 752         :help "Interface to RCS, CVS, SCCS"))
 753
 754 (define-key menu-bar-tools-menu [separator-compare]
 755   '("--"))
 756
 757 (define-key menu-bar-tools-menu [ediff-misc]
 758   '(menu-item "Ediff Miscellanea" menu-bar-ediff-misc-menu
 759               :help "Ediff manual, customization, sessions, etc."))
 760 (define-key menu-bar-tools-menu [epatch]
 761   '(menu-item "Apply Patch" menu-bar-epatch-menu))
 762 (define-key menu-bar-tools-menu [ediff-merge]
 763   '(menu-item "Merge" menu-bar-ediff-merge-menu
 764               :help "Merge different revisions of files/directories"))
 765 (define-key menu-bar-tools-menu [compare]
 766   '(menu-item "Compare (Ediff)" menu-bar-ediff-menu
 767               :help "Display differences between files/directories"))
 768
 769
 770 (define-key menu-bar-tools-menu [separator-spell]
 771   '("--"))
 772
 773 (define-key menu-bar-tools-menu [spell]
 774   '(menu-item "Spell Checking" ispell-menu-map))
 775
 776 (define-key menu-bar-tools-menu [separator-prog]
 777   '("--"))
 778
 779 (define-key menu-bar-tools-menu [gdb]
 780   '(menu-item "Debugger (GUD)..." gdb
 781               :help "Debug a program from within Emacs"))
 782 (define-key menu-bar-tools-menu [shell-on-region]
 783   '(menu-item "Shell Command on Region..." shell-command-on-region
 784               :enable mark-active
 785               :help "Pass marked region to a shell command"))
 786 (define-key menu-bar-tools-menu [shell]
 787   '(menu-item "Shell Command..." shell-command
 788               :help "Invoke a shell command and catch its output"))
 789 (define-key menu-bar-tools-menu [compile]
 790   '(menu-item "Compile..." compile
 791               :help "Invoke compiler or Make, view compilation errors"))
 792 (define-key menu-bar-tools-menu [grep]
 793   '(menu-item "Search Files (Grep)..." grep
 794               :help "Search files for strings or regexps (with Grep)"))
 795
 796 \f
 797 ;; The "Help" menu items
 798
 799 (defvar menu-bar-describe-menu (make-sparse-keymap "Describe"))
 800
 801 (define-key menu-bar-describe-menu [mule-diag]
 802   '(menu-item "Show All of Mule Status" mule-diag
 803               :visible default-enable-multibyte-characters
 804               :help "Display multilingual environment settings"))
 805 (define-key menu-bar-describe-menu [describe-coding-system]
 806   '(menu-item "Describe Coding System..." describe-coding-system
 807               :visible default-enable-multibyte-characters))
 808 (define-key menu-bar-describe-menu [describe-input-method]
 809   '(menu-item "Describe Input Method..." describe-input-method
 810               :visible default-enable-multibyte-characters
 811               :help "Keyboard layout for specific input method"))
 812 (define-key menu-bar-describe-menu [describe-language-environment]
 813   (list 'menu-item "Describe Language Environment"
 814         describe-language-environment-map
 815         :help "Show multilingual settings for a specific language"))
 816
 817 (define-key menu-bar-describe-menu [separator-desc-mule]
 818   '("--"))
 819
 820 (define-key menu-bar-describe-menu [list-keybindings]
 821   '(menu-item "List Key Bindings" describe-bindings
 822               :help "Display a list of all current keybindings"))
 823 (define-key menu-bar-describe-menu [list-keybindings]
 824   '(menu-item "List Key Bindings" describe-bindings
 825               :help "Display a list of all current keybindings"))
 826 (define-key menu-bar-describe-menu [describe-variable]
 827   '(menu-item "Describe Variable..." describe-variable
 828               :help "Display documentation of variable/option"))
 829 (define-key menu-bar-describe-menu [describe-function]
 830   '(menu-item "Describe Function..." describe-function
 831               :help "Display documentation of function/command"))
 832 (define-key menu-bar-describe-menu [describe-key]
 833   '(menu-item "Describe Key..." describe-key
 834               ;; Users typically don't identify keys and menu items...
 835               :help "Display documentation of command bound to a \
 836 key (or menu-item)"))
 837 (define-key menu-bar-describe-menu [apropos-variables]
 838   '(menu-item "Apropos Variables..." apropos-variable
 839               :help "List variables whose names match a regexp"))
 840 (define-key menu-bar-describe-menu [apropos-commands]
 841   '(menu-item "Apropos Commands..." apropos-command
 842               :help "List commands whose names match a regexp"))
 843 (define-key menu-bar-describe-menu [describe-mode]
 844   '(menu-item "Describe Buffer Modes" describe-mode
 845               :help "Describe this buffer's major and minor mode"))
 846
 847 (defvar menu-bar-manuals-menu (make-sparse-keymap "Manuals"))
 848
 849 (define-key menu-bar-manuals-menu [man]
 850   '(menu-item "Read Man Page..." manual-entry
 851               :help "Man-page docs for external commands and libraries"))
 852 (define-key menu-bar-manuals-menu [sep2]
 853   '("--"))
 854 (define-key menu-bar-manuals-menu [info]
 855   '(menu-item "Browse Manuals with Info" Info-directory
 856               :help "Read any of the installed manuals"))
 857 (define-key menu-bar-manuals-menu [command]
 858   '(menu-item "Find Command in Manual" Info-goto-emacs-command-node
 859               :help "Display manual section that describes a command"))
 860 (define-key menu-bar-manuals-menu [key]
 861   '(menu-item "Find Key in Manual" Info-goto-emacs-key-command-node
 862               :help "Display manual section that describes a key"))
 863
 864 (define-key menu-bar-help-menu [eliza]
 865   '(menu-item "Emacs Psychiatrist" doctor
 866               :help "Our doctor will help you feel better"))
 867 (define-key menu-bar-help-menu [sep3]
 868   '("--"))
 869 (define-key menu-bar-help-menu [describe-no-warranty]
 870   '(menu-item "(Non)Warranty" describe-no-warranty
 871               :help "Explain that Emacs has NO WARRANTY"))
 872 (define-key menu-bar-help-menu [describe-copying]
 873   '(menu-item "Copying Conditions" describe-copying
 874               :help "Show the Emacs license (GPL)"))
 875 (define-key menu-bar-help-menu [describe-distribution]
 876   '(menu-item "Getting New Versions" describe-distribution
 877               :help "How to get latest versions of Emacs"))
 878 (define-key menu-bar-help-menu [more]
 879   '(menu-item "Find Extra Packages"
 880               (lambda ()
 881                 (interactive)
 882                 (let (enable-local-variables)
 883                   (view-file (expand-file-name "MORE.STUFF"
 884                                                data-directory))
 885                   (goto-address)))
 886               :help "Where to find some extra packages and possible updates"))
 887 (define-key menu-bar-help-menu [emacs-version]
 888   '(menu-item "Show Emacs Version" emacs-version))
 889 (define-key menu-bar-help-menu [sep2]
 890   '("--"))
 891 (define-key menu-bar-help-menu [finder-by-keyword]
 892   '(menu-item "Find Emacs Packages..." finder-by-keyword
 893               :help "Find packages and features by keyword"))
 894 (define-key menu-bar-help-menu [describe]
 895   (list 'menu-item "Describe" menu-bar-describe-menu
 896         :help "Describe commands, variables, keys"))
 897 (define-key menu-bar-help-menu [manuals]
 898   (list 'menu-item "Manuals" menu-bar-manuals-menu
 899         :help "Lookup commands and keys in docs, read manuals"))
 900 (define-key menu-bar-help-menu [sep1]
 901   '("--"))
 902 (define-key menu-bar-help-menu [report-emacs-bug]
 903   '(menu-item "Send Bug Report..." report-emacs-bug
 904               :help "Send e-mail to Emacs maintainers"))
 905 (define-key menu-bar-help-menu [order-emacs-manuals]
 906   '(menu-item "Ordering Manuals" view-order-manuals
 907               :help "How to order manuals from the Free Software Foundation"))
 908 (define-key menu-bar-help-menu [emacs-manual]
 909   '(menu-item "Read the Emacs Manual"
 910               (lambda () (interactive) (info "emacs"))))
 911 (define-key menu-bar-help-menu [emacs-problems]
 912   '(menu-item "Emacs Known Problems" view-emacs-problems))
 913 (define-key menu-bar-help-menu [emacs-news]
 914   '(menu-item "Emacs News" view-emacs-news
 915               :help "New features of this version"))
 916 (define-key menu-bar-help-menu [emacs-faq]
 917   '(menu-item "Emacs FAQ" view-emacs-FAQ))
 918 (define-key menu-bar-help-menu [emacs-tutorial-language-specific]
 919   '(menu-item "Emacs Tutorial (choose language)..."
 920               (lambda () (interactive) (help-with-tutorial t))
 921               :help "Learn how to use Emacs (choose a language)"))
 922 (define-key menu-bar-help-menu [emacs-tutorial]
 923   '(menu-item "Emacs Tutorial" help-with-tutorial
 924               :help "Learn how to use Emacs"))
 925
 926 (defun kill-this-buffer ()      ; for the menubar
 927   "Kill the current buffer."
 928   (interactive)
 929   (kill-buffer (current-buffer)))
 930
 931 (defun kill-this-buffer-enabled-p ()
 932   (let ((count 0)
 933         (buffers (buffer-list)))
 934     (while buffers
 935       (or (string-match "^ " (buffer-name (car buffers)))
 936           (setq count (1+ count)))
 937       (setq buffers (cdr buffers)))
 938     (and (not (window-minibuffer-p (frame-selected-window menu-updating-frame)))
 939          (> count 1))))
 940
 941 (put 'dired 'menu-enable
 942      '(not (window-minibuffer-p (frame-selected-window menu-updating-frame))))
 943
 944 ;; Permit deleting frame if it would leave a visible or iconified frame.
 945 (defun delete-frame-enabled-p ()
 946   "Return non-nil if `delete-frame' should be enabled in the menu bar."
 947   (let ((frames (frame-list))
 948         (count 0))
 949     (while frames
 950       (if (frame-visible-p (car frames))
 951           (setq count (1+ count)))
 952       (setq frames (cdr frames)))
 953     (> count 1)))
 954
 955 (defcustom yank-menu-length 20
 956   "*Maximum length to display in the yank-menu."
 957   :type 'integer
 958   :group 'mouse)
 959
 960 (defun menu-bar-update-yank-menu (string old)
 961   (let ((front (car (cdr yank-menu)))
 962         (menu-string (if (<= (length string) yank-menu-length)
 963                          string
 964                        (concat
 965                         (substring string 0 (/ yank-menu-length 2))
 966                         "..."
 967                         (substring string (- (/ yank-menu-length 2)))))))
 968     ;; Don't let the menu string be all dashes
 969     ;; because that has a special meaning in a menu.
 970     (if (string-match "\\`-+\\'" menu-string)
 971         (setq menu-string (concat menu-string " ")))
 972     ;; If we're supposed to be extending an existing string, and that
 973     ;; string really is at the front of the menu, then update it in place.
 974     (if (and old (or (eq old (car front))
 975                      (string= old (car front))))
 976         (progn
 977           (setcar front string)
 978           (setcar (cdr front) menu-string))
 979       (setcdr yank-menu
 980               (cons
 981                (cons string (cons menu-string 'menu-bar-select-yank))
 982                (cdr yank-menu)))))
 983   (if (> (length (cdr yank-menu)) kill-ring-max)
 984       (setcdr (nthcdr kill-ring-max yank-menu) nil)))
 985
 986 (put 'menu-bar-select-yank 'apropos-inhibit t)
 987 (defun menu-bar-select-yank ()
 988   (interactive "*")
 989   (push-mark (point))
 990   (insert last-command-event))
 991 \f
 992 (defvar list-buffers-directory nil)
 993
 994 (defvar menu-bar-update-buffers-maxbuf)
 995
 996 (defun menu-bar-select-buffer ()
 997   (interactive)
 998   (switch-to-buffer last-command-event))
 999
1000 (defun menu-bar-select-frame ()
1001   (interactive)
1002   (let (frame)
1003     (dolist (f (frame-list))
1004       (when (equal last-command-event (frame-parameter f 'name))
1005         (setq frame f)))
1006   (make-frame-visible frame)
1007   (raise-frame frame)
1008   (select-frame frame)))
1009
1010 (defun menu-bar-update-buffers-1 (elt)
1011   (cons (format
1012          (format "%%%ds  %%s%%s  %%s" menu-bar-update-buffers-maxbuf)
1013          (cdr elt)
1014          (if (buffer-modified-p (car elt))
1015              "*" " ")
1016          (save-excursion
1017            (set-buffer (car elt))
1018            (if buffer-read-only "%" " "))
1019          (let ((file
1020                 (or (buffer-file-name (car elt))
1021                     (save-excursion
1022                       (set-buffer (car elt))
1023                       list-buffers-directory)
1024                     "")))
1025            (setq file (or (file-name-directory file)
1026                           ""))
1027            (if (> (length file) 20)
1028                (setq file (concat "..." (substring file -17))))
1029            file))
1030         (car elt)))
1031
1032 (defvar menu-bar-buffers-menu-list-buffers-entry nil)
1033
1034 (defun menu-bar-update-buffers (&optional force)
1035   ;; If user discards the Buffers item, play along.
1036   (and (lookup-key (current-global-map) [menu-bar buffer])
1037        (or force (frame-or-buffer-changed-p))
1038        (let ((buffers (buffer-list))
1039              (frames (frame-list))
1040              (maxlen 0)
1041              buffers-menu frames-menu)
1042          ;; If requested, list only the N most recently selected buffers.
1043          (if (and (integerp buffers-menu-max-size)
1044                   (> buffers-menu-max-size 1))
1045              (if (> (length buffers) buffers-menu-max-size)
1046                  (setcdr (nthcdr buffers-menu-max-size buffers) nil)))
1047
1048          ;; Make the menu of buffers proper.
1049          (setq buffers-menu
1050                (cons "Select Buffer"
1051                      (let* ((buffer-list
1052                              (mapcar 'list buffers))
1053                             tail
1054                             (menu-bar-update-buffers-maxbuf 0)
1055                             alist
1056                             head)
1057                        ;; Put into each element of buffer-list
1058                        ;; the name for actual display,
1059                        ;; perhaps truncated in the middle.
1060                        (setq tail buffer-list)
1061                        (while tail
1062                          (let ((name (buffer-name (car (car tail)))))
1063                            (setcdr (car tail)
1064                                    (if (> (length name) 27)
1065                                        (concat (substring name 0 12)
1066                                                "..."
1067                                                (substring name -12))
1068                                      name)))
1069                          (setq tail (cdr tail)))
1070                        ;; Compute the maximum length of any name.
1071                        (setq tail buffer-list)
1072                        (while tail
1073                          (or (eq ?\ (aref (cdr (car tail)) 0))
1074                              (setq menu-bar-update-buffers-maxbuf
1075                                    (max menu-bar-update-buffers-maxbuf
1076                                         (length (cdr (car tail))))))
1077                          (setq tail (cdr tail)))
1078                        ;; Set ALIST to an alist of the form
1079                        ;; ITEM-STRING . BUFFER
1080                        (setq tail buffer-list)
1081                        (while tail
1082                          (let ((elt (car tail)))
1083                            (or (eq ?\ (aref (cdr elt) 0))
1084                                (setq alist (cons
1085                                             (menu-bar-update-buffers-1 elt)
1086                                             alist)))
1087                            (and alist (> (length (car (car alist))) maxlen)
1088                                 (setq maxlen (length (car (car alist))))))
1089                          (setq tail (cdr tail)))
1090                        (setq alist (nreverse alist))
1091                        ;; Make the menu item for list-buffers
1092                        ;; or reuse the one we already have.
1093                        ;; The advantage in reusing one
1094                        ;; is that it already has the keyboard equivalent
1095                        ;; cached, so we save the time to look that up again.
1096                        (or menu-bar-buffers-menu-list-buffers-entry
1097                            (setq menu-bar-buffers-menu-list-buffers-entry
1098                                  (cons
1099                                   'list-buffers
1100                                   (cons
1101                                    ""
1102                                    'list-buffers))))
1103                        ;; Update the item string for menu's new width.
1104                        (setcar (cdr menu-bar-buffers-menu-list-buffers-entry)
1105                                (concat (make-string (max (- (/ maxlen 2) 8) 0)
1106                                                     ?\ )
1107                                        "List All Buffers"))
1108                        ;; Now make the actual list of items,
1109                        ;; ending with the list-buffers item.
1110                        (nconc (mapcar (lambda (pair)
1111                                         ;; This is somewhat risque, to use
1112                                         ;; the buffer name itself as the event
1113                                         ;; type to define, but it works.
1114                                         ;; It would not work to use the buffer
1115                                         ;; since a buffer as an event has its
1116                                         ;; own meaning.
1117                                         (nconc (list (buffer-name (cdr pair))
1118                                                      (car pair)
1119                                                      (cons nil nil))
1120                                                'menu-bar-select-buffer))
1121                                       alist)
1122                               (list menu-bar-buffers-menu-list-buffers-entry)))))
1123
1124
1125          ;; Make a Frames menu if we have more than one frame.
1126          (if (cdr frames)
1127              (let ((name (concat (make-string (max (- (/ maxlen 2) 3) 0)
1128                                               ?\ )
1129                                  "Frames"))
1130                    (frames-menu
1131                     (cons 'keymap
1132                           (cons "Select Frame"
1133                                 (mapcar
1134                                  (lambda (frame)
1135                                    (nconc
1136                                     (list (frame-parameter frame 'name)
1137                                           (frame-parameter frame 'name)
1138                                           (cons nil nil))
1139                                           'menu-bar-select-frame))
1140                                         frames)))))
1141                ;; Put it underneath the Buffers menu.
1142                (setq buffers-menu (cons (cons 'frames (cons name frames-menu))
1143                                         buffers-menu))))
1144          (if buffers-menu
1145              (setq buffers-menu (cons 'keymap buffers-menu)))
1146          (define-key (current-global-map) [menu-bar buffer]
1147            (cons "Buffers" buffers-menu)))))
1148
1149 (add-hook 'menu-bar-update-hook 'menu-bar-update-buffers)
1150
1151 (menu-bar-update-buffers)
1152
1153 ;; this version is too slow
1154 ;;;(defun format-buffers-menu-line (buffer)
1155 ;;;  "Returns a string to represent the given buffer in the Buffer menu.
1156 ;;;nil means the buffer shouldn't be listed.  You can redefine this."
1157 ;;;  (if (string-match "\\` " (buffer-name buffer))
1158 ;;;      nil
1159 ;;;    (save-excursion
1160 ;;;     (set-buffer buffer)
1161 ;;;     (let ((size (buffer-size)))
1162 ;;;       (format "%s%s %-19s %6s %-15s %s"
1163 ;;;            (if (buffer-modified-p) "*" " ")
1164 ;;;            (if buffer-read-only "%" " ")
1165 ;;;            (buffer-name)
1166 ;;;            size
1167 ;;;            mode-name
1168 ;;;            (or (buffer-file-name) ""))))))
1169 \f
1170 ;;; Set up a menu bar menu for the minibuffer.
1171
1172 (dolist (map (list minibuffer-local-ns-map
1173                    minibuffer-local-must-match-map
1174                    minibuffer-local-isearch-map
1175                    minibuffer-local-map
1176                    minibuffer-local-completion-map))
1177   (define-key map [menu-bar minibuf]
1178     (cons "Minibuf" (make-sparse-keymap "Minibuf"))))
1179
1180 (dolist (map (list minibuffer-local-must-match-map
1181                    minibuffer-local-completion-map))
1182   (define-key map [menu-bar minibuf ?\?]
1183     (list 'menu-item "List Completions" 'minibuffer-completion-help
1184           :help "Display all possible completions"))
1185   (define-key map [menu-bar minibuf space]
1186     (list 'menu-item "Complete Word" 'minibuffer-complete-word
1187           :help "Complete at most one word"))
1188   (define-key map [menu-bar minibuf tab]
1189     (list 'menu-item "Complete" 'minibuffer-complete
1190           :help "Complete as far as possible")))
1191
1192 (dolist (map (list minibuffer-local-ns-map
1193                    minibuffer-local-must-match-map
1194                    minibuffer-local-isearch-map
1195                    minibuffer-local-map
1196                    minibuffer-local-completion-map))
1197   (define-key map [menu-bar minibuf quit]
1198     (list 'menu-item "Quit" 'keyboard-escape-quit
1199           :help "Abort input and exit minibuffer"))
1200   (define-key map [menu-bar minibuf return]
1201     (list 'menu-item "Enter" 'exit-minibuffer
1202           :help "Terminate input and exit minibuffer")))
1203 \f
1204 (defcustom menu-bar-mode nil
1205   "Toggle display of a menu bar on each frame.
1206 Setting this variable directly does not take effect;
1207 use either \\[customize] or the function `menu-bar-mode'."
1208   :set (lambda (symbol value)
1209          (menu-bar-mode (or value 0)))
1210   :initialize 'custom-initialize-default
1211   :type 'boolean
1212   :group 'frames)
1213
1214 (defun menu-bar-mode (flag)
1215   "Toggle display of a menu bar on each frame.
1216 This command applies to all frames that exist and frames to be
1217 created in the future.
1218 With a numeric argument, if the argument is positive,
1219 turn on menu bars; otherwise, turn off menu bars."
1220  (interactive "P")
1221
1222   ;; Make menu-bar-mode and default-frame-alist consistent.
1223   (let ((default (assq 'menu-bar-lines default-frame-alist)))
1224     (if default
1225         (setq menu-bar-mode (not (eq (cdr default) 0)))
1226       (setq default-frame-alist
1227             (cons (cons 'menu-bar-lines (if menu-bar-mode 1 0))
1228                   default-frame-alist))))
1229
1230   ;; Toggle or set the mode, according to FLAG.
1231  (setq menu-bar-mode (if (null flag) (not menu-bar-mode)
1232                        (> (prefix-numeric-value flag) 0)))
1233
1234  ;; Apply it to default-frame-alist.
1235  (let ((parameter (assq 'menu-bar-lines default-frame-alist)))
1236    (if (consp parameter)
1237        (setcdr parameter (if menu-bar-mode 1 0))
1238      (setq default-frame-alist
1239            (cons (cons 'menu-bar-lines (if menu-bar-mode 1 0))
1240                  default-frame-alist))))
1241
1242  ;; Apply it to existing frames.
1243  (let ((frames (frame-list)))
1244    (while frames
1245      (let ((height (cdr (assq 'height (frame-parameters (car frames))))))
1246        (modify-frame-parameters (car frames)
1247                                 (list (cons 'menu-bar-lines
1248                                           (if menu-bar-mode 1 0))))
1249        (modify-frame-parameters (car frames)
1250                                 (list (cons 'height height))))
1251      (setq frames (cdr frames)))))
1252
1253 (provide 'menu-bar)
1254
1255 ;;; menu-bar.el ends here