(require 'electric)
(defgroup tmm nil
"Text mode access to menu-bar."
:prefix "tmm-"
:group 'menu)
(defvar tmm-short-cuts)
(defvar tmm-old-mb-map nil)
(defvar tmm-old-comp-map)
(defvar tmm-c-prompt)
(defvar tmm-km-list)
(defvar tmm-next-shortcut-digit)
(defvar tmm-table-undef)
(defun tmm-menubar (&optional x-position)
"Text-mode emulation of looking and choosing from a menubar.
See the documentation for `tmm-prompt'.
X-POSITION, if non-nil, specifies a horizontal position within the menu bar;
we make that menu bar item (the one at that position) the default choice."
(interactive)
(run-hooks 'menu-bar-update-hook)
(let ((menu-bar (tmm-get-keybind [menu-bar]))
menu-bar-item)
(let ((list menu-bar-final-items))
(while list
(let ((item (car list)))
(let ((this-one (assq item menu-bar)))
(setq menu-bar (append (delq this-one menu-bar)
(list this-one)))))
(setq list (cdr list))))
(if x-position
(let ((tail menu-bar)
this-one
(column 0))
(while (and tail (< column x-position))
(setq this-one (car tail))
(if (and (consp (car tail))
(consp (cdr (car tail)))
(stringp (nth 1 (car tail))))
(setq column (+ column
(length (nth 1 (car tail)))
1)))
(setq tail (cdr tail)))
(setq menu-bar-item (car this-one))))
(tmm-prompt menu-bar nil menu-bar-item)))
(defun tmm-menubar-mouse (event)
"Text-mode emulation of looking and choosing from a menubar.
This command is used when you click the mouse in the menubar
on a console which has no window system but does have a mouse.
See the documentation for `tmm-prompt'."
(interactive "e")
(tmm-menubar (car (posn-x-y (event-start event)))))
(defcustom tmm-mid-prompt "==>"
"*String to insert between shortcut and menu item.
If nil, there will be no shortcuts. It should not consist only of spaces,
or else the correct item might not be found in the `*Completions*' buffer."
:type 'string
:group 'tmm)
(defvar tmm-mb-map nil
"A place to store minibuffer map.")
(defcustom tmm-completion-prompt
"Press PageUp Key to reach this buffer from the minibuffer.
Alternatively, you can use Up/Down keys (or your History keys) to change
the item in the minibuffer, and press RET when you are done, or press the
marked letters to pick up your choice. Type C-g or ESC ESC ESC to cancel.
"
"*Help text to insert on the top of the completion buffer.
To save space, you can set this to nil,
in which case the standard introduction text is deleted too."
:type '(choice string (const nil))
:group 'tmm)
(defcustom tmm-shortcut-style '(downcase upcase)
"*What letters to use as menu shortcuts.
Must be either one of the symbols `downcase' or `upcase',
or else a list of the two in the order you prefer."
:type '(choice (const downcase)
(const upcase)
(repeat (choice (const downcase) (const upcase))))
:group 'tmm)
(defcustom tmm-shortcut-words 2
"*How many successive words to try for shortcuts, nil means all.
If you use only one of `downcase' or `upcase' for `tmm-shortcut-style',
specify nil for this variable."
:type '(choice integer (const nil))
:group 'tmm)
(defun tmm-prompt (menu &optional in-popup default-item)
"Text-mode emulation of calling the bindings in keymap.
Creates a text-mode menu of possible choices. You can access the elements
in the menu in two ways:
*) via history mechanism from minibuffer;
*) Or via completion-buffer that is automatically shown.
The last alternative is currently a hack, you cannot use mouse reliably.
MENU is like the MENU argument to `x-popup-menu': either a
keymap or an alist of alists.
DEFAULT-ITEM, if non-nil, specifies an initial default choice.
Its value should be an event that has a binding in MENU."
(let ((gl-str "Menu bar") tmm-km-list out history history-len tmm-table-undef tmm-c-prompt
tmm-old-mb-map tmm-old-comp-map tmm-short-cuts
chosen-string choice
(not-menu (not (keymapp menu))))
(run-hooks 'activate-menubar-hook)
(mapc (lambda (elt)
(if (stringp elt)
(setq gl-str elt)
(and (listp elt) (tmm-get-keymap elt not-menu))))
menu)
(if (and not-menu (= 1 (length tmm-km-list)))
(setq choice (cdr (car tmm-km-list)))
(unless tmm-km-list
(error "Empty menu reached"))
(and tmm-km-list
(let ((index-of-default 0))
(if tmm-mid-prompt
(setq tmm-km-list (tmm-add-shortcuts tmm-km-list))
t)
(if default-item
(let ((tail menu))
(while (and tail
(not (eq (car-safe (car tail)) default-item)))
(if (and (consp (car tail))
(or (stringp (car-safe (cdr (car tail))))
(eq (car-safe (cdr (car tail))) 'menu-item)))
(setq index-of-default (1+ index-of-default)))
(setq tail (cdr tail)))))
(setq history (reverse (mapcar 'car tmm-km-list)))
(setq history-len (length history))
(setq history (append history history history history))
(setq tmm-c-prompt (nth (- history-len 1 index-of-default) history))
(add-hook 'minibuffer-setup-hook 'tmm-add-prompt)
(save-excursion
(unwind-protect
(setq out
(completing-read
(concat gl-str " (up/down to change, PgUp to menu): ")
tmm-km-list nil t nil
(cons 'history (- (* 2 history-len) index-of-default))))
(save-excursion
(remove-hook 'minibuffer-setup-hook 'tmm-add-prompt)
(if (get-buffer "*Completions*")
(progn
(set-buffer "*Completions*")
(use-local-map tmm-old-comp-map)
(bury-buffer (current-buffer)))))
))))
(setq choice (cdr (assoc out tmm-km-list)))
(and (null choice)
(> (length out) (length tmm-c-prompt))
(string= (substring out 0 (length tmm-c-prompt)) tmm-c-prompt)
(setq out (substring out (length tmm-c-prompt))
choice (cdr (assoc out tmm-km-list))))
(and (null choice) out
(setq out (try-completion out tmm-km-list)
choice (cdr (assoc out tmm-km-list)))))
(setq chosen-string (car choice))
(setq choice (cdr choice))
(cond (in-popup
choice)
(not-menu (tmm-prompt choice t))
((keymapp choice)
(if (symbolp choice)
(setq choice (indirect-function choice)))
(condition-case nil
(require 'mouse)
(error nil))
(condition-case nil
(x-popup-menu nil choice) (error nil))
(tmm-prompt choice))
(choice
(if chosen-string
(progn
(setq last-command-event chosen-string)
(call-interactively choice))
choice)))))
(defun tmm-add-shortcuts (list)
"Adds shortcuts to cars of elements of the list.
Takes a list of lists with a string as car, returns list with
shortcuts added to these cars.
Stores a list of all the shortcuts in the free variable `tmm-short-cuts'."
(let ((tmm-next-shortcut-digit ?0))
(mapcar 'tmm-add-one-shortcut (reverse list))))
(defsubst tmm-add-one-shortcut (elt)
(let* ((str (car elt))
(paren (string-match "(" str))
(pos 0) (word 0) char)
(catch 'done (while (and (or (not tmm-shortcut-words) (< word tmm-shortcut-words)) (setq pos (string-match "\\w+" str pos)) (not (and paren (> pos paren)))) (if (or (= pos 0)
(/= (aref str (1- pos)) ?.)) (let ((shortcut-style
(if (listp tmm-shortcut-style) tmm-shortcut-style
(list tmm-shortcut-style))))
(while shortcut-style (setq char (funcall (car shortcut-style) (aref str pos)))
(if (not (memq char tmm-short-cuts)) (throw 'done char))
(setq shortcut-style (cdr shortcut-style)))))
(setq word (1+ word))
(setq pos (match-end 0)))
(while (<= tmm-next-shortcut-digit ?9) (setq char tmm-next-shortcut-digit)
(setq tmm-next-shortcut-digit (1+ tmm-next-shortcut-digit))
(if (not (memq char tmm-short-cuts)) (throw 'done char)))
(setq char nil))
(if char (setq tmm-short-cuts (cons char tmm-short-cuts)))
(cons (concat (if char (concat (char-to-string char) tmm-mid-prompt)
(make-string (1+ (length tmm-mid-prompt)) ?\ ))
str)
(cdr elt))))
(defun tmm-define-keys (minibuffer)
(let ((map (make-sparse-keymap)))
(suppress-keymap map t)
(mapc
(lambda (c)
(if (listp tmm-shortcut-style)
(define-key map (char-to-string c) 'tmm-shortcut)
(define-key map (char-to-string (downcase c)) 'tmm-shortcut)
(define-key map (char-to-string (upcase c)) 'tmm-shortcut)))
tmm-short-cuts)
(if minibuffer
(progn
(define-key map [pageup] 'tmm-goto-completions)
(define-key map [prior] 'tmm-goto-completions)
(define-key map "\ev" 'tmm-goto-completions)
(define-key map "\C-n" 'next-history-element)
(define-key map "\C-p" 'previous-history-element)))
(prog1 (current-local-map)
(use-local-map (append map (current-local-map))))))
(defun tmm-completion-delete-prompt ()
(set-buffer standard-output)
(goto-char 1)
(delete-region 1 (search-forward "Possible completions are:\n")))
(defun tmm-add-prompt ()
(remove-hook 'minibuffer-setup-hook 'tmm-add-prompt)
(make-local-hook 'minibuffer-exit-hook)
(add-hook 'minibuffer-exit-hook 'tmm-delete-map nil t)
(let ((win (selected-window)))
(setq tmm-old-mb-map (tmm-define-keys t))
(save-window-excursion
(let ((completions
(mapcar 'car minibuffer-completion-table)))
(or tmm-completion-prompt
(add-hook 'completion-setup-hook
'tmm-completion-delete-prompt 'append))
(with-output-to-temp-buffer "*Completions*"
(display-completion-list completions))
(remove-hook 'completion-setup-hook 'tmm-completion-delete-prompt))
(when tmm-completion-prompt
(set-buffer "*Completions*")
(let ((buffer-read-only nil))
(goto-char (point-min))
(insert tmm-completion-prompt))))
(save-selected-window
(other-window 1) (Electric-pop-up-window "*Completions*")
(with-current-buffer "*Completions*"
(setq tmm-old-comp-map (tmm-define-keys nil))))
(insert tmm-c-prompt)))
(defun tmm-delete-map ()
(remove-hook 'minibuffer-exit-hook 'tmm-delete-map t)
(if tmm-old-mb-map
(use-local-map tmm-old-mb-map)))
(defun tmm-shortcut ()
"Choose the shortcut that the user typed."
(interactive)
(let ((c last-command-char) s)
(if (symbolp tmm-shortcut-style)
(setq c (funcall tmm-shortcut-style c)))
(if (memq c tmm-short-cuts)
(if (equal (buffer-name) "*Completions*")
(progn
(beginning-of-buffer)
(re-search-forward
(concat "\\(^\\|[ \t]\\)" (char-to-string c) tmm-mid-prompt))
(choose-completion))
(delete-region (minibuffer-prompt-end) (point-max))
(mapc (lambda (elt)
(if (string=
(substring (car elt) 0
(min (1+ (length tmm-mid-prompt))
(length (car elt))))
(concat (char-to-string c) tmm-mid-prompt))
(setq s (car elt))))
tmm-km-list)
(insert s)
(exit-minibuffer)))))
(defun tmm-goto-completions ()
(interactive)
(let ((prompt-end (minibuffer-prompt-end)))
(setq tmm-c-prompt (buffer-substring prompt-end (point-max)))
(delete-region prompt-end (point-max)))
(switch-to-buffer-other-window "*Completions*")
(search-forward tmm-c-prompt)
(search-backward tmm-c-prompt))
(defun tmm-get-keymap (elt &optional in-x-menu)
"Prepends (DOCSTRING EVENT BINDING) to free variable `tmm-km-list'.
The values are deduced from the argument ELT, that should be an
element of keymap, an `x-popup-menu' argument, or an element of
`x-popup-menu' argument (when IN-X-MENU is not-nil).
This function adds the element only if it is not already present.
It uses the free variable `tmm-table-undef' to keep undefined keys."
(let (km str cache plist filter visible (event (car elt)))
(setq elt (cdr elt))
(if (eq elt 'undefined)
(setq tmm-table-undef (cons (cons event nil) tmm-table-undef))
(unless (assoc event tmm-table-undef)
(cond ((if (listp elt)
(or (keymapp elt) (eq (car elt) 'lambda))
(fboundp elt))
(setq km elt))
((if (listp (cdr-safe elt))
(or (keymapp (cdr-safe elt))
(eq (car (cdr-safe elt)) 'lambda))
(fboundp (cdr-safe elt)))
(setq km (cdr elt))
(and (stringp (car elt)) (setq str (car elt))))
((if (listp (cdr-safe (cdr-safe elt)))
(or (keymapp (cdr-safe (cdr-safe elt)))
(eq (car (cdr-safe (cdr-safe elt))) 'lambda))
(fboundp (cdr-safe (cdr-safe elt))))
(setq km (cdr (cdr elt)))
(and (stringp (car elt)) (setq str (car elt)))
(and str
(stringp (cdr (car (cdr elt)))) (setq cache (cdr (car (cdr elt))))
cache (setq str (concat str cache))))
((eq (car-safe elt) 'menu-item)
(setq plist (cdr-safe (cdr-safe (cdr-safe elt))))
(when (consp (car-safe plist))
(setq plist (cdr-safe plist)))
(setq km (nth 2 elt))
(setq str (eval (nth 1 elt)))
(setq filter (plist-get plist :filter))
(if filter
(setq km (funcall filter km)))
(setq visible (plist-get plist :visible))
(if visible
(setq km (and (eval visible) km)))
(and str
(consp (nth 3 elt))
(stringp (cdr (nth 3 elt))) (setq cache (cdr (nth 3 elt)))
cache
(setq str (concat str cache))))
((if (listp (cdr-safe (cdr-safe (cdr-safe elt))))
(or (keymapp (cdr-safe (cdr-safe (cdr-safe elt))))
(eq (car (cdr-safe (cdr-safe (cdr-safe elt)))) 'lambda))
(fboundp (cdr-safe (cdr-safe (cdr-safe elt)))))
(setq km (cdr (cdr (cdr elt))))
(and (stringp (car elt)) (setq str (car elt)))
(and str
(stringp (cdr (car (cdr (cdr elt))))) (setq cache (cdr (car (cdr (cdr elt)))))
cache (setq str (concat str cache))))
((stringp event) (if (or in-x-menu (stringp (car-safe elt)))
(setq str event event nil km elt)
(setq str event event nil km (cons 'keymap elt))
))))
(and km (stringp km) (setq str km))
(when (and km (symbolp km) (get km 'menu-enable))
(unless (eval (get km 'menu-enable))
(setq km nil)))
(and km str
(or (assoc str tmm-km-list)
(push (cons str (cons event km)) tmm-km-list))))))
(defun tmm-get-keybind (keyseq)
"Return the current binding of KEYSEQ, merging prefix definitions.
If KEYSEQ is a prefix key that has local and global bindings,
we merge them into a single keymap which shows the proper order of the menu.
However, for the menu bar itself, the value does not take account
of `menu-bar-final-items'."
(let (allbind bind)
(setq bind (key-binding keyseq))
(if (keymapp bind)
(setq bind nil))
(or bind
(progn
(setq allbind (mapcar 'cdr (minor-mode-key-binding keyseq)))
(setq allbind (cons (local-key-binding keyseq) allbind))
(setq allbind (cons (global-key-binding keyseq) allbind))
(mapc (lambda (in)
(if (and (symbolp in) (keymapp in))
(setq in (symbol-function in)))
(and in (keymapp in)
(if (keymapp bind)
(setq bind (nconc bind (copy-sequence (cdr in))))
(setq bind (copy-sequence in)))))
allbind)
bind))))
(add-hook 'calendar-load-hook (lambda () (require 'cal-menu)))
(provide 'tmm)