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