lisp/menu-bar.el

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