[bpt/emacs.git] / lisp / menu-bar.el

;;; 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))
\f
(define-key menu-bar-file-menu [exit-emacs]
  '("Exit Emacs" . save-buffers-kill-emacs))

(define-key menu-bar-file-menu [separator-compare]
  '("--"))

(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 [separator-misc]
  '("--"))

(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 [separator-frames]
  '("--"))

(define-key menu-bar-file-menu [delete-frame] '("Delete Frame" . delete-frame))
(define-key menu-bar-file-menu [make-frame] '("Make New Frame" . make-frame))

(define-key menu-bar-file-menu [separator-buffers]
  '("--"))

(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 [kill-buffer]
  '("Kill Buffer" . kill-this-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))
\f
(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 [separator-misc]
  '("--"))

(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 [separator-edit]
  '("--"))

(define-key menu-bar-edit-menu [clear] '("Clear" . delete-region))
(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)
\f
(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)
\f
(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))

(defun menu-bar-update-buffers ()
  (if (frame-or-buffer-changed-p)
      (let ((buffers (buffer-list))
	    (frames (frame-list))
	    buffers-menu frames-menu)
	;; 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) ""))))))
\f
(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
Commit	Line	Data
235aa29b ER	1	;;; menu-bar.el --- define a default menu bar.
	2
	3	;; Author: RMS
b7f66977	4	;; Keywords: internal
235aa29b	5
03dcd202	6	;; Copyright (C) 1993, 1994 Free Software Foundation, Inc.
1db87953 RS	7
	8	;; This file is part of GNU Emacs.
	9
	10	;; GNU Emacs is free software; you can redistribute it and/or modify
	11	;; it under the terms of the GNU General Public License as published by
	12	;; the Free Software Foundation; either version 2, or (at your option)
	13	;; any later version.
	14
	15	;; GNU Emacs is distributed in the hope that it will be useful,
	16	;; but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	;; GNU General Public License for more details.
	19
	20	;; You should have received a copy of the GNU General Public License
	21	;; along with GNU Emacs; see the file COPYING. If not, write to
	22	;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
	23
235aa29b	24	;;; Code:
1db87953	25
b132f2b1 RM	26	;; Don't clobber an existing menu-bar keymap, to preserve any menu-bar key
	27	;; definitions made in loaddefs.el.
	28	(or (lookup-key global-map [menu-bar])
	29	(define-key global-map [menu-bar] (make-sparse-keymap "menu-bar")))
22390f50	30	(defvar menu-bar-help-menu (make-sparse-keymap "Help"))
da183f87 RS	31	;; Put Help item last.
	32	(setq menu-bar-final-items '(help))
	33	(define-key global-map [menu-bar help] (cons "Help" menu-bar-help-menu))
22390f50	34	(defvar menu-bar-edit-menu (make-sparse-keymap "Edit"))
40954111	35	(define-key global-map [menu-bar edit] (cons "Edit" menu-bar-edit-menu))
22390f50	36	(defvar menu-bar-file-menu (make-sparse-keymap "File"))
40954111	37	(define-key global-map [menu-bar file] (cons "File" menu-bar-file-menu))
9bb8e471	38	\f
ca9b40a1	39	(define-key menu-bar-file-menu [exit-emacs]
db774a16	40	'("Exit Emacs" . save-buffers-kill-emacs))
9bb8e471 RS	41
	42	(define-key menu-bar-file-menu [separator-compare]
	43	'("--"))
	44
080ac1ac RS	45	(define-key menu-bar-file-menu [epatch]
	46	'("Apply Patch" . menu-bar-epatch-menu))
	47	(define-key menu-bar-file-menu [ediff]
	48	'("Compare Files" . menu-bar-ediff-menu))
966bcddd	49	(define-key menu-bar-file-menu [emerge] '("Emerge" . menu-bar-emerge-menu))
9bb8e471 RS	50
	51	(define-key menu-bar-file-menu [separator-misc]
	52	'("--"))
	53
661b05a7 RS	54	(define-key menu-bar-file-menu [calendar] '("Calendar" . calendar))
	55	(define-key menu-bar-file-menu [rmail] '("Read Mail" . rmail))
	56	(define-key menu-bar-file-menu [gnus] '("Read Net News" . gnus))
9bb8e471 RS	57
	58	(define-key menu-bar-file-menu [separator-frames]
	59	'("--"))
	60
	61	(define-key menu-bar-file-menu [delete-frame] '("Delete Frame" . delete-frame))
	62	(define-key menu-bar-file-menu [make-frame] '("Make New Frame" . make-frame))
	63
	64	(define-key menu-bar-file-menu [separator-buffers]
	65	'("--"))
	66
9d441895	67	(define-key menu-bar-file-menu [bookmark]
966bcddd	68	'("Bookmarks" . menu-bar-bookmark-map))
9bb8e471 RS	69	(define-key menu-bar-file-menu [print-buffer]
	70	'("Print Buffer" . print-buffer))
	71	(define-key menu-bar-file-menu [kill-buffer]
	72	'("Kill Buffer" . kill-this-buffer))
2f1139a4 RS	73	(define-key menu-bar-file-menu [revert-buffer]
	74	'("Revert Buffer" . revert-buffer))
	75	(define-key menu-bar-file-menu [write-file]
	76	'("Save Buffer As..." . write-file))
	77	(define-key menu-bar-file-menu [save-buffer] '("Save Buffer" . save-buffer))
76202b57	78	(define-key menu-bar-file-menu [dired] '("Open Directory..." . dired))
2f1139a4	79	(define-key menu-bar-file-menu [open-file] '("Open File..." . find-file))
9bb8e471	80	\f
33aa8946 RS	81	(define-key menu-bar-edit-menu [query-replace]
33aa8946 RS	82	'("Query Replace" . query-replace))
50d195ee RS	83	(define-key menu-bar-edit-menu [re-search-back]
	84	'("Regexp Search Backwards" . re-search-backward))
	85	(define-key menu-bar-edit-menu [search-back]
	86	'("Search Backwards" . search-backward))
	87	(define-key menu-bar-edit-menu [re-search-fwd]
	88	'("Regexp Search" . re-search-forward))
	89	(define-key menu-bar-edit-menu [search-fwd]
	90	'("Search" . search-forward))
9bb8e471 RS	91
	92	(define-key menu-bar-edit-menu [separator-misc]
	93	'("--"))
	94
	95	(define-key menu-bar-edit-menu [spell] '("Spell" . ispell-menu-map))
	96	(define-key menu-bar-edit-menu [fill] '("Fill" . fill-region))
	97
	98	(define-key menu-bar-edit-menu [separator-edit]
	99	'("--"))
	100
	101	(define-key menu-bar-edit-menu [clear] '("Clear" . delete-region))
75340584	102	(define-key menu-bar-edit-menu [choose-next-paste]
f7f19201	103	'("Choose Next Paste >" . mouse-menu-choose-yank))
057d49d1 RS	104	(define-key menu-bar-edit-menu [paste] '("Paste" . yank))
	105	(define-key menu-bar-edit-menu [copy] '("Copy" . kill-ring-save))
	106	(define-key menu-bar-edit-menu [cut] '("Cut" . kill-region))
	107	(define-key menu-bar-edit-menu [undo] '("Undo" . undo))
	108
	109	(put 'fill-region 'menu-enable 'mark-active)
	110	(put 'kill-region 'menu-enable 'mark-active)
	111	(put 'kill-ring-save 'menu-enable 'mark-active)
	112	(put 'yank 'menu-enable '(x-selection-exists-p))
	113	(put 'delete-region 'menu-enable 'mark-active)
	114	(put 'undo 'menu-enable '(if (eq last-command 'undo)
	115	pending-undo-list
	116	(consp buffer-undo-list)))
33aa8946	117	(put 'query-replace 'menu-enable (not buffer-read-only))
db774a16	118
9e18f0a0 RS	119	(autoload 'ispell-menu-map "ispell" nil t 'keymap)
9e18f0a0 RS	120
f9cf0be2 RS	121	;; These are alternative definitions for the cut, paste and copy
	122	;; menu items. Use them if your system expects these to use the clipboard
	123
f9cf0be2 RS	124	(put 'clipboard-kill-region 'menu-enable 'mark-active)
	125	(put 'clipboard-kill-ring-save 'menu-enable 'mark-active)
	126	(put 'clipboard-yank 'menu-enable
	127	'(or (x-selection-exists-p) (x-selection-exists-p 'CLIPBOARD)))
	128
	129	(defun clipboard-yank ()
	130	"Reinsert the last stretch of killed text, or the clipboard contents."
	131	(interactive)
	132	(let ((x-select-enable-clipboard t))
	133	(yank)))
	134
	135	(defun clipboard-kill-ring-save (beg end)
	136	"Copy region to kill ring, and save in the X clipboard."
	137	(interactive "r")
	138	(let ((x-select-enable-clipboard t))
	139	(kill-ring-save beg end)))
	140
	141	(defun clipboard-kill-region (beg end)
	142	"Kill the region, and save it in the X clipboard."
	143	(interactive "r")
	144	(let ((x-select-enable-clipboard t))
	145	(kill-region beg end)))
	146
	147	(defun menu-bar-enable-clipboard ()
	148	"Make the menu bar CUT, PASTE and COPY items use the clipboard."
	149	(interactive)
5754d7f2 RS	150	;; We can't use constant list structure here because it becomes pure,
	151	;; and because it gets modified with cache data.
	152	(define-key menu-bar-edit-menu [paste]
	153	(cons "Paste" 'clipboard-yank))
	154	(define-key menu-bar-edit-menu [copy]
	155	(cons "Copy" 'clipboard-kill-ring-save))
	156	(define-key menu-bar-edit-menu [cut]
	157	(cons "Cut" 'clipboard-kill-region)))
2165f676 RS	158
	159	;; Sun expects these commands on these keys, so why not?
	160	(define-key global-map [f20] 'clipboard-kill-region)
	161	(define-key global-map [f16] 'clipboard-kill-ring-save)
	162	(define-key global-map [f18] 'clipboard-yank)
f9cf0be2	163	\f
efb166ff RS	164	(define-key menu-bar-help-menu [emacs-version]
efb166ff RS	165	'("Show Version" . emacs-version))
48433a65 RS	166	(define-key menu-bar-help-menu [report-emacs-bug]
48433a65 RS	167	'("Send Bug Report" . report-emacs-bug))
ca9b40a1	168	(define-key menu-bar-help-menu [emacs-tutorial]
db774a16	169	'("Emacs Tutorial" . help-with-tutorial))
2f1139a4 RS	170	(define-key menu-bar-help-menu [man] '("Man..." . manual-entry))
	171	(define-key menu-bar-help-menu [describe-variable]
	172	'("Describe Variable..." . describe-variable))
	173	(define-key menu-bar-help-menu [describe-function]
	174	'("Describe Function..." . describe-function))
	175	(define-key menu-bar-help-menu [describe-key]
	176	'("Describe Key..." . describe-key))
	177	(define-key menu-bar-help-menu [list-keybindings]
	178	'("List Keybindings" . describe-bindings))
	179	(define-key menu-bar-help-menu [command-apropos]
	180	'("Command Apropos..." . command-apropos))
	181	(define-key menu-bar-help-menu [describe-mode]
	182	'("Describe Mode" . describe-mode))
	183	(define-key menu-bar-help-menu [info] '("Info" . info))
db774a16	184
2f1139a4	185	(define-key menu-bar-help-menu [emacs-news] '("Emacs News" . view-emacs-news))
db774a16 RS	186	(defun kill-this-buffer () ; for the menubar
	187	"Kills the current buffer."
	188	(interactive)
	189	(kill-buffer (current-buffer)))
	190
2f1139a4 RS	191	(defun kill-this-buffer-enabled-p ()
	192	(let ((count 0)
	193	(buffers (buffer-list)))
	194	(while buffers
	195	(or (string-match "^ " (buffer-name (car buffers)))
	196	(setq count (1+ count)))
	197	(setq buffers (cdr buffers)))
	198	(> count 1)))
	199
db774a16	200	(put 'save-buffer 'menu-enable '(buffer-modified-p))
da183f87 RS	201	(put 'revert-buffer 'menu-enable
	202	'(or revert-buffer-function revert-buffer-insert-file-contents-function
	203	(and (buffer-file-name)
660fa562 RM	204	(or (buffer-modified-p)
660fa562 RM	205	(not (verify-visited-file-modtime (current-buffer)))))))
a0213a97 RS	206	;; Permit deleting frame if it would leave a visible or iconified frame.
	207	(put 'delete-frame 'menu-enable
	208	'(let ((frames (frame-list))
	209	(count 0))
	210	(while frames
	211	(if (cdr (assq 'visibility (frame-parameters (car frames))))
	212	(setq count (1+ count)))
	213	(setq frames (cdr frames)))
	214	(> count 1)))
2f1139a4 RS	215	(put 'kill-this-buffer 'menu-enable '(kill-this-buffer-enabled-p))
2f1139a4 RS	216
db774a16 RS	217	(put 'advertised-undo 'menu-enable
	218	'(and (not (eq t buffer-undo-list))
	219	(if (eq last-command 'undo)
2f1139a4 RS	220	(and (boundp 'pending-undo-list)
	221	pending-undo-list)
	222	buffer-undo-list)))
2877eac2 RS	223
	224	(defvar yank-menu-length 100
	225	"*Maximum length of an item in the menu for \
	226	\\[mouse-menu-choose-yank].")
	227
	228	(defun mouse-menu-choose-yank (event)
	229	"Pop up a menu of the kill-ring for selection with the mouse.
	230	The kill-ring-yank-pointer is moved to the selected element.
	231	A subsequent \\[yank] yanks the choice just selected."
	232	(interactive "e")
	233	(let* ((count 0)
	234	(menu (mapcar (lambda (string)
	235	(if (> (length string) yank-menu-length)
	236	(setq string (substring string
	237	0 yank-menu-length)))
	238	(prog1 (cons string count)
	239	(setq count (1+ count))))
dfabc98f RM	240	kill-ring))
	241	(arg (x-popup-menu event
	242	(list "Yank Menu"
75340584	243	(cons "Choose Next Yank" menu)))))
dfabc98f RM	244	;; A mouse click outside the menu returns nil.
	245	;; Avoid a confusing error from passing nil to rotate-yank-pointer.
	246	;; XXX should this perhaps do something other than simply return? -rm
	247	(if arg
	248	(progn
03dcd202 RM	249	;; We don't use `rotate-yank-pointer' because we want to move
	250	;; relative to the beginning of kill-ring, not the current
	251	;; position. Also, that would ask for any new X selection and
	252	;; thus change the list of items the user just chose from, which
	253	;; would be highly confusing.
	254	(setq kill-ring-yank-pointer (nthcdr arg kill-ring))
dfabc98f RM	255	(if (interactive-p)
	256	(message "The next yank will insert the selected text.")
	257	(current-kill 0))))))
	258	(put 'mouse-menu-choose-yank 'menu-enable 'kill-ring)
40954111	259	\f
09642d97 RS	260	(define-key global-map [menu-bar buffer] '("Buffers" . menu-bar-buffers))
	261
	262	(defalias 'menu-bar-buffers (make-sparse-keymap "Buffers"))
40954111 RS	263
	264	(defvar complex-buffers-menu-p nil
	265	"*Non-nil says, offer a choice of actions after you pick a buffer.
	266	This applies to the Buffers menu from the menu bar.")
	267
	268	(defvar buffers-menu-max-size 10
	269	"*Maximum number of entries which may appear on the Buffers menu.
	270	If this is 10, then only the ten most-recently-selected buffers are shown.
	271	If this is nil, then all buffers are shown.
	272	A large number or nil slows down menu responsiveness.")
	273
d0690d12 RS	274	(defvar list-buffers-directory nil)
d0690d12 RS	275
09642d97 RS	276	(defun menu-bar-select-buffer ()
	277	(interactive)
	278	(switch-to-buffer last-command-event))
	279
	280	(defun menu-bar-select-frame ()
	281	(interactive)
	282	(make-frame-visible last-command-event)
	283	(raise-frame last-command-event)
	284	(select-frame last-command-event))
	285
	286	(defun menu-bar-update-buffers ()
096ec7e7 KH	287	(if (frame-or-buffer-changed-p)
	288	(let ((buffers (buffer-list))
	289	(frames (frame-list))
	290	buffers-menu frames-menu)
	291	;; If requested, list only the N most recently selected buffers.
	292	(if (and (integerp buffers-menu-max-size)
	293	(> buffers-menu-max-size 1))
	294	(if (> (length buffers) buffers-menu-max-size)
	295	(setcdr (nthcdr buffers-menu-max-size buffers) nil)))
	296
	297	;; Make the menu of buffers proper.
	298	(setq buffers-menu
	299	(cons "Select Buffer"
	300	(let ((tail buffers)
	301	(maxbuf 0)
	302	(maxlen 0)
	303	alist
	304	head)
	305	(while tail
	306	(or (eq ?\ (aref (buffer-name (car tail)) 0))
	307	(setq maxbuf
	308	(max maxbuf
	309	(length (buffer-name (car tail))))))
	310	(setq tail (cdr tail)))
	311	(setq tail buffers)
	312	(while tail
	313	(let ((elt (car tail)))
	314	(or (eq ?\ (aref (buffer-name elt) 0))
	315	(setq alist (cons
	316	(cons
	317	(format
	318	(format "%%%ds %%s%%s %%s"
	319	maxbuf)
	320	(buffer-name elt)
	321	(if (buffer-modified-p elt)
	322	"*" " ")
	323	(save-excursion
	324	(set-buffer elt)
	325	(if buffer-read-only "%" " "))
	326	(or (buffer-file-name elt)
	327	(save-excursion
	328	(set-buffer elt)
	329	list-buffers-directory)
	330	""))
	331	elt)
	332	alist)))
	333	(and alist (> (length (car (car alist))) maxlen)
	334	(setq maxlen (length (car (car alist))))))
	335	(setq tail (cdr tail)))
	336	(setq alist (nreverse alist))
	337	(nconc (mapcar '(lambda (pair)
	338	;; This is somewhat risque, to use
	339	;; the buffer name itself as the event
	340	;; type to define, but it works.
	341	;; It would not work to use the buffer
	342	;; since a buffer as an event has its
	343	;; own meaning.
	344	(nconc (list (buffer-name (cdr pair))
	345	(car pair)
	346	(cons nil nil))
	347	'menu-bar-select-buffer))
	348	alist)
	349	(list
	350	(cons
351	'list-buffers
352	(cons
353	(concat (make-string (max (- (/ maxlen 2) 8) 0)
354	?\ )
355	"List All Buffers")
356	'list-buffers)))))))
357
358
359	;; Make a Frames menu if we have more than one frame.
360	(if (cdr frames)
361	(setq frames-menu
362	(cons "Select Frame"
363	(mapcar '(lambda (frame)
364	(nconc (list frame
365	(cdr (assq 'name
366	(frame-parameters frame)))
367	(cons nil nil))
368	'menu-bar-select-frame))
369	frames))))
370	(if buffers-menu
371	(setq buffers-menu (cons 'keymap buffers-menu)))
372	(if frames-menu
373	(setq frames-menu (cons 'keymap frames-menu)))
374	(define-key global-map [menu-bar buffer]
375	(cons "Buffers"
376	(if (and buffers-menu frames-menu)
377	(list 'keymap "Buffers and Frames"
378	(cons 'buffers (cons "Buffers" buffers-menu))
379	(cons 'frames (cons "Frames" frames-menu)))
380	(or buffers-menu frames-menu 'undefined)))))))
09642d97 RS	381
09642d97 RS	382	(add-hook 'menu-bar-update-hook 'menu-bar-update-buffers)
2f1139a4	383
40954111 RS	384	;; this version is too slow
	385	;;;(defun format-buffers-menu-line (buffer)
	386	;;; "Returns a string to represent the given buffer in the Buffer menu.
	387	;;;nil means the buffer shouldn't be listed. You can redefine this."
	388	;;; (if (string-match "\\` " (buffer-name buffer))
	389	;;; nil
	390	;;; (save-excursion
	391	;;; (set-buffer buffer)
	392	;;; (let ((size (buffer-size)))
	393	;;; (format "%s%s %-19s %6s %-15s %s"
	394	;;; (if (buffer-modified-p) "*" " ")
	395	;;; (if buffer-read-only "%" " ")
	396	;;; (buffer-name)
	397	;;; size
	398	;;; mode-name
	399	;;; (or (buffer-file-name) ""))))))
	400	\f
057d49d1	401	(defun menu-bar-mode (flag)
dfd29450	402	"Toggle display of a menu bar on each frame.
057d49d1 RS	403	This command applies to all frames that exist and frames to be
	404	created in the future.
	405	With a numeric argument, if the argument is negative,
dfd29450	406	turn off menu bars; otherwise, turn on menu bars."
dad8e392	407	(interactive "P")
dad8e392 RM	408
	409	;; Obtain the current setting by looking at default-frame-alist.
	410	(let ((menu-bar-mode
	411	(not (zerop (let ((assq (assq 'menu-bar-lines default-frame-alist)))
	412	(if assq (cdr assq) 0))))))
	413
	414	;; Tweedle it according to the argument.
	415	(setq menu-bar-mode (if (null flag) (not menu-bar-mode)
e48f95c9	416	(> (prefix-numeric-value flag) 0)))
dad8e392 RM	417
	418	;; Apply it to default-frame-alist.
	419	(let ((parameter (assq 'menu-bar-lines default-frame-alist)))
	420	(if (consp parameter)
	421	(setcdr parameter (if menu-bar-mode 1 0))
	422	(setq default-frame-alist
	423	(cons (cons 'menu-bar-lines (if menu-bar-mode 1 0))
	424	default-frame-alist))))
	425
	426	;; Apply it to existing frames.
	427	(let ((frames (frame-list)))
	428	(while frames
c32b0bce	429	(let ((height (cdr (assq 'height (frame-parameters (car frames))))))
17c4c3c4 RS	430	(modify-frame-parameters (car frames)
17c4c3c4 RS	431	(list (cons 'menu-bar-lines
dad8e392	432	(if menu-bar-mode 1 0))))
17c4c3c4 RS	433	(modify-frame-parameters (car frames)
17c4c3c4 RS	434	(list (cons 'height height))))
dad8e392	435	(setq frames (cdr frames))))))
1db87953	436
bffa5d4d RS	437	(provide 'menu-bar)
bffa5d4d RS	438
235aa29b	439	;;; menu-bar.el ends here