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amiga-menu-bar.el
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Lisp/Scheme
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1994-08-28
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;;; amiga-menu-bar.el --- define a default menu bar.
;;; it's nearly menu-bar.el except multi-frame stuff (CHFIXME)
(defun frame-list () "Dummy frame-list, returns list of selected- frame."
(list (selected-frame))) ; CHFIXME
;;; 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