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- ;;; menu-bar.el --- define a default menu bar.
-
- ;; Author: RMS
- ;; Keywords: internal
-
- ;; Copyright (C) 1993, 1994 Free Software Foundation, Inc.
-
- ;; This file is part of GNU Emacs.
-
- ;; GNU Emacs is free software; you can redistribute it and/or modify
- ;; it under the terms of the GNU General Public License as published by
- ;; the Free Software Foundation; either version 2, or (at your option)
- ;; any later version.
-
- ;; GNU Emacs is distributed in the hope that it will be useful,
- ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
- ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- ;; GNU General Public License for more details.
-
- ;; You should have received a copy of the GNU General Public License
- ;; along with GNU Emacs; see the file COPYING. If not, write to
- ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
- ;;; Code:
-
- ;; Don't clobber an existing menu-bar keymap, to preserve any menu-bar key
- ;; definitions made in loaddefs.el.
- (or (lookup-key global-map [menu-bar])
- (define-key global-map [menu-bar] (make-sparse-keymap "menu-bar")))
- (defvar menu-bar-help-menu (make-sparse-keymap "Help"))
- ;; Put Help item last.
- (setq menu-bar-final-items '(help))
- (define-key global-map [menu-bar help] (cons "Help" menu-bar-help-menu))
- (defvar menu-bar-edit-menu (make-sparse-keymap "Edit"))
- (define-key global-map [menu-bar edit] (cons "Edit" menu-bar-edit-menu))
- (defvar menu-bar-file-menu (make-sparse-keymap "File"))
- (define-key global-map [menu-bar file] (cons "File" menu-bar-file-menu))
-
- (define-key menu-bar-file-menu [exit-emacs]
- '("Exit Emacs" . save-buffers-kill-emacs))
- (define-key menu-bar-file-menu [kill-buffer]
- '("Kill Buffer" . kill-this-buffer))
- (define-key menu-bar-file-menu [delete-frame] '("Delete Frame" . delete-frame))
- (define-key menu-bar-file-menu [epatch]
- '("Apply Patch" . menu-bar-epatch-menu))
- (define-key menu-bar-file-menu [ediff]
- '("Compare Files" . menu-bar-ediff-menu))
- (define-key menu-bar-file-menu [emerge] '("Emerge" . menu-bar-emerge-menu))
- (define-key menu-bar-file-menu [calendar] '("Calendar" . calendar))
- (define-key menu-bar-file-menu [rmail] '("Read Mail" . rmail))
- (define-key menu-bar-file-menu [gnus] '("Read Net News" . gnus))
- (define-key menu-bar-file-menu [bookmark]
- '("Bookmarks" . menu-bar-bookmark-map))
- (define-key menu-bar-file-menu [print-buffer] '("Print Buffer" . print-buffer))
- (define-key menu-bar-file-menu [revert-buffer]
- '("Revert Buffer" . revert-buffer))
- (define-key menu-bar-file-menu [write-file]
- '("Save Buffer As..." . write-file))
- (define-key menu-bar-file-menu [save-buffer] '("Save Buffer" . save-buffer))
- (define-key menu-bar-file-menu [dired] '("Open Directory..." . dired))
- (define-key menu-bar-file-menu [open-file] '("Open File..." . find-file))
- (define-key menu-bar-file-menu [make-frame] '("Make New Frame" . make-frame))
-
- (define-key menu-bar-edit-menu [spell] '("Spell" . ispell-menu-map))
- (define-key menu-bar-edit-menu [fill] '("Fill" . fill-region))
- (define-key menu-bar-edit-menu [clear] '("Clear" . delete-region))
- (define-key menu-bar-edit-menu [query-replace]
- '("Query Replace" . query-replace))
- (define-key menu-bar-edit-menu [re-search-back]
- '("Regexp Search Backwards" . re-search-backward))
- (define-key menu-bar-edit-menu [search-back]
- '("Search Backwards" . search-backward))
- (define-key menu-bar-edit-menu [re-search-fwd]
- '("Regexp Search" . re-search-forward))
- (define-key menu-bar-edit-menu [search-fwd]
- '("Search" . search-forward))
- (define-key menu-bar-edit-menu [choose-next-paste]
- '("Choose Next Paste >" . mouse-menu-choose-yank))
- (define-key menu-bar-edit-menu [paste] '("Paste" . yank))
- (define-key menu-bar-edit-menu [copy] '("Copy" . kill-ring-save))
- (define-key menu-bar-edit-menu [cut] '("Cut" . kill-region))
- (define-key menu-bar-edit-menu [undo] '("Undo" . undo))
-
- (put 'fill-region 'menu-enable 'mark-active)
- (put 'kill-region 'menu-enable 'mark-active)
- (put 'kill-ring-save 'menu-enable 'mark-active)
- (put 'yank 'menu-enable '(x-selection-exists-p))
- (put 'delete-region 'menu-enable 'mark-active)
- (put 'undo 'menu-enable '(if (eq last-command 'undo)
- pending-undo-list
- (consp buffer-undo-list)))
- (put 'query-replace 'menu-enable (not buffer-read-only))
-
- (autoload 'ispell-menu-map "ispell" nil t 'keymap)
-
- ;; These are alternative definitions for the cut, paste and copy
- ;; menu items. Use them if your system expects these to use the clipboard
-
- (put 'clipboard-kill-region 'menu-enable 'mark-active)
- (put 'clipboard-kill-ring-save 'menu-enable 'mark-active)
- (put 'clipboard-yank 'menu-enable
- '(or (x-selection-exists-p) (x-selection-exists-p 'CLIPBOARD)))
-
- (defun clipboard-yank ()
- "Reinsert the last stretch of killed text, or the clipboard contents."
- (interactive)
- (let ((x-select-enable-clipboard t))
- (yank)))
-
- (defun clipboard-kill-ring-save (beg end)
- "Copy region to kill ring, and save in the X clipboard."
- (interactive "r")
- (let ((x-select-enable-clipboard t))
- (kill-ring-save beg end)))
-
- (defun clipboard-kill-region (beg end)
- "Kill the region, and save it in the X clipboard."
- (interactive "r")
- (let ((x-select-enable-clipboard t))
- (kill-region beg end)))
-
- (defun menu-bar-enable-clipboard ()
- "Make the menu bar CUT, PASTE and COPY items use the clipboard."
- (interactive)
- ;; We can't use constant list structure here because it becomes pure,
- ;; and because it gets modified with cache data.
- (define-key menu-bar-edit-menu [paste]
- (cons "Paste" 'clipboard-yank))
- (define-key menu-bar-edit-menu [copy]
- (cons "Copy" 'clipboard-kill-ring-save))
- (define-key menu-bar-edit-menu [cut]
- (cons "Cut" 'clipboard-kill-region)))
-
- ;; Sun expects these commands on these keys, so why not?
- (define-key global-map [f20] 'clipboard-kill-region)
- (define-key global-map [f16] 'clipboard-kill-ring-save)
- (define-key global-map [f18] 'clipboard-yank)
-
- (define-key menu-bar-help-menu [emacs-version]
- '("Show Version" . emacs-version))
- (define-key menu-bar-help-menu [report-emacs-bug]
- '("Send Bug Report" . report-emacs-bug))
- (define-key menu-bar-help-menu [emacs-tutorial]
- '("Emacs Tutorial" . help-with-tutorial))
- (define-key menu-bar-help-menu [man] '("Man..." . manual-entry))
- (define-key menu-bar-help-menu [describe-variable]
- '("Describe Variable..." . describe-variable))
- (define-key menu-bar-help-menu [describe-function]
- '("Describe Function..." . describe-function))
- (define-key menu-bar-help-menu [describe-key]
- '("Describe Key..." . describe-key))
- (define-key menu-bar-help-menu [list-keybindings]
- '("List Keybindings" . describe-bindings))
- (define-key menu-bar-help-menu [command-apropos]
- '("Command Apropos..." . command-apropos))
- (define-key menu-bar-help-menu [describe-mode]
- '("Describe Mode" . describe-mode))
- (define-key menu-bar-help-menu [info] '("Info" . info))
-
- (define-key menu-bar-help-menu [emacs-news] '("Emacs News" . view-emacs-news))
- (defun kill-this-buffer () ; for the menubar
- "Kills the current buffer."
- (interactive)
- (kill-buffer (current-buffer)))
-
- (defun kill-this-buffer-enabled-p ()
- (let ((count 0)
- (buffers (buffer-list)))
- (while buffers
- (or (string-match "^ " (buffer-name (car buffers)))
- (setq count (1+ count)))
- (setq buffers (cdr buffers)))
- (> count 1)))
-
- (put 'save-buffer 'menu-enable '(buffer-modified-p))
- (put 'revert-buffer 'menu-enable
- '(or revert-buffer-function revert-buffer-insert-file-contents-function
- (and (buffer-file-name)
- (or (buffer-modified-p)
- (not (verify-visited-file-modtime (current-buffer)))))))
- ;; Permit deleting frame if it would leave a visible or iconified frame.
- (put 'delete-frame 'menu-enable
- '(let ((frames (frame-list))
- (count 0))
- (while frames
- (if (cdr (assq 'visibility (frame-parameters (car frames))))
- (setq count (1+ count)))
- (setq frames (cdr frames)))
- (> count 1)))
- (put 'kill-this-buffer 'menu-enable '(kill-this-buffer-enabled-p))
-
- (put 'advertised-undo 'menu-enable
- '(and (not (eq t buffer-undo-list))
- (if (eq last-command 'undo)
- (and (boundp 'pending-undo-list)
- pending-undo-list)
- buffer-undo-list)))
-
- (defvar yank-menu-length 100
- "*Maximum length of an item in the menu for \
- \\[mouse-menu-choose-yank].")
-
- (defun mouse-menu-choose-yank (event)
- "Pop up a menu of the kill-ring for selection with the mouse.
- The kill-ring-yank-pointer is moved to the selected element.
- A subsequent \\[yank] yanks the choice just selected."
- (interactive "e")
- (let* ((count 0)
- (menu (mapcar (lambda (string)
- (if (> (length string) yank-menu-length)
- (setq string (substring string
- 0 yank-menu-length)))
- (prog1 (cons string count)
- (setq count (1+ count))))
- kill-ring))
- (arg (x-popup-menu event
- (list "Yank Menu"
- (cons "Choose Next Yank" menu)))))
- ;; A mouse click outside the menu returns nil.
- ;; Avoid a confusing error from passing nil to rotate-yank-pointer.
- ;; XXX should this perhaps do something other than simply return? -rm
- (if arg
- (progn
- ;; We don't use `rotate-yank-pointer' because we want to move
- ;; relative to the beginning of kill-ring, not the current
- ;; position. Also, that would ask for any new X selection and
- ;; thus change the list of items the user just chose from, which
- ;; would be highly confusing.
- (setq kill-ring-yank-pointer (nthcdr arg kill-ring))
- (if (interactive-p)
- (message "The next yank will insert the selected text.")
- (current-kill 0))))))
- (put 'mouse-menu-choose-yank 'menu-enable 'kill-ring)
-
- (define-key global-map [menu-bar buffer] '("Buffers" . menu-bar-buffers))
-
- (defalias 'menu-bar-buffers (make-sparse-keymap "Buffers"))
-
- (defvar complex-buffers-menu-p nil
- "*Non-nil says, offer a choice of actions after you pick a buffer.
- This applies to the Buffers menu from the menu bar.")
-
- (defvar buffers-menu-max-size 10
- "*Maximum number of entries which may appear on the Buffers menu.
- If this is 10, then only the ten most-recently-selected buffers are shown.
- If this is nil, then all buffers are shown.
- A large number or nil slows down menu responsiveness.")
-
- (defvar list-buffers-directory nil)
-
- (defun menu-bar-select-buffer ()
- (interactive)
- (switch-to-buffer last-command-event))
-
- (defun menu-bar-select-frame ()
- (interactive)
- (make-frame-visible last-command-event)
- (raise-frame last-command-event)
- (select-frame last-command-event))
-
- (defvar menu-bar-update-buffers-last-buffers nil)
- (defvar menu-bar-update-buffers-last-frames nil)
-
- (defun menu-bar-update-buffers ()
- (let ((buffers (buffer-list))
- (frames (frame-list))
- buffers-info
- buffers-menu frames-menu)
- (setq buffers-info
- (mapcar (function (lambda (buffer)
- (list buffer (buffer-modified-p buffer)
- (save-excursion
- (set-buffer buffer)
- buffer-read-only))))
- buffers))
- (if (and (equal buffers-info menu-bar-update-buffers-last-buffers)
- (equal frames menu-bar-update-buffers-last-frames))
- nil
- (setq menu-bar-update-buffers-last-buffers buffers-info)
- (setq menu-bar-update-buffers-last-frames frames)
- ;; If requested, list only the N most recently selected buffers.
- (if (and (integerp buffers-menu-max-size)
- (> buffers-menu-max-size 1))
- (if (> (length buffers) buffers-menu-max-size)
- (setcdr (nthcdr buffers-menu-max-size buffers) nil)))
-
- ;; Make the menu of buffers proper.
- (setq buffers-menu
- (cons "Select Buffer"
- (let ((tail buffers)
- (maxbuf 0)
- (maxlen 0)
- alist
- head)
- (while tail
- (or (eq ?\ (aref (buffer-name (car tail)) 0))
- (setq maxbuf
- (max maxbuf
- (length (buffer-name (car tail))))))
- (setq tail (cdr tail)))
- (setq tail buffers)
- (while tail
- (let ((elt (car tail)))
- (or (eq ?\ (aref (buffer-name elt) 0))
- (setq alist (cons
- (cons
- (format
- (format "%%%ds %%s%%s %%s"
- maxbuf)
- (buffer-name elt)
- (if (buffer-modified-p elt)
- "*" " ")
- (save-excursion
- (set-buffer elt)
- (if buffer-read-only "%" " "))
- (or (buffer-file-name elt)
- (save-excursion
- (set-buffer elt)
- list-buffers-directory)
- ""))
- elt)
- alist)))
- (and alist (> (length (car (car alist))) maxlen)
- (setq maxlen (length (car (car alist))))))
- (setq tail (cdr tail)))
- (setq alist (nreverse alist))
- (nconc (mapcar '(lambda (pair)
- ;; This is somewhat risque, to use
- ;; the buffer name itself as the event type
- ;; to define, but it works.
- ;; It would not work to use the buffer
- ;; since a buffer as an event has its
- ;; own meaning.
- (nconc (list (buffer-name (cdr pair))
- (car pair)
- (cons nil nil))
- 'menu-bar-select-buffer))
- alist)
- (list (cons 'list-buffers
- (cons
- (concat (make-string (max (- (/ maxlen
- 2)
- 8)
- 0) ?\ )
- "List All Buffers")
- 'list-buffers)))))))
-
-
- ;; Make a Frames menu if we have more than one frame.
- (if (cdr frames)
- (setq frames-menu
- (cons "Select Frame"
- (mapcar '(lambda (frame)
- (nconc (list frame
- (cdr (assq 'name
- (frame-parameters frame)))
- (cons nil nil))
- 'menu-bar-select-frame))
- frames))))
- (if buffers-menu
- (setq buffers-menu (cons 'keymap buffers-menu)))
- (if frames-menu
- (setq frames-menu (cons 'keymap frames-menu)))
- (define-key global-map [menu-bar buffer]
- (cons "Buffers"
- (if (and buffers-menu frames-menu)
- (list 'keymap "Buffers and Frames"
- (cons 'buffers (cons "Buffers" buffers-menu))
- (cons 'frames (cons "Frames" frames-menu)))
- (or buffers-menu frames-menu 'undefined)))))))
-
- (add-hook 'menu-bar-update-hook 'menu-bar-update-buffers)
-
- ;; this version is too slow
- ;;;(defun format-buffers-menu-line (buffer)
- ;;; "Returns a string to represent the given buffer in the Buffer menu.
- ;;;nil means the buffer shouldn't be listed. You can redefine this."
- ;;; (if (string-match "\\` " (buffer-name buffer))
- ;;; nil
- ;;; (save-excursion
- ;;; (set-buffer buffer)
- ;;; (let ((size (buffer-size)))
- ;;; (format "%s%s %-19s %6s %-15s %s"
- ;;; (if (buffer-modified-p) "*" " ")
- ;;; (if buffer-read-only "%" " ")
- ;;; (buffer-name)
- ;;; size
- ;;; mode-name
- ;;; (or (buffer-file-name) ""))))))
-
- (defun menu-bar-mode (flag)
- "Toggle display of a menu bar on each frame.
- This command applies to all frames that exist and frames to be
- created in the future.
- With a numeric argument, if the argument is negative,
- turn off menu bars; otherwise, turn on menu bars."
- (interactive "P")
-
- ;; Obtain the current setting by looking at default-frame-alist.
- (let ((menu-bar-mode
- (not (zerop (let ((assq (assq 'menu-bar-lines default-frame-alist)))
- (if assq (cdr assq) 0))))))
-
- ;; Tweedle it according to the argument.
- (setq menu-bar-mode (if (null flag) (not menu-bar-mode)
- (> (prefix-numeric-value flag) 0)))
-
- ;; Apply it to default-frame-alist.
- (let ((parameter (assq 'menu-bar-lines default-frame-alist)))
- (if (consp parameter)
- (setcdr parameter (if menu-bar-mode 1 0))
- (setq default-frame-alist
- (cons (cons 'menu-bar-lines (if menu-bar-mode 1 0))
- default-frame-alist))))
-
- ;; Apply it to existing frames.
- (let ((frames (frame-list)))
- (while frames
- (let ((height (cdr (assq 'height (frame-parameters (car frames))))))
- (modify-frame-parameters (car frames)
- (list (cons 'menu-bar-lines
- (if menu-bar-mode 1 0))))
- (modify-frame-parameters (car frames)
- (list (cons 'height height))))
- (setq frames (cdr frames))))))
-
- (provide 'menu-bar)
-
- ;;; menu-bar.el ends here
-