;;; map-ynp.el --- General-purpose boolean question-asker.
-;;; Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+;; Copyright (C) 1991, 1992, 1993, 1994, 1995, 2000 Free Software Foundation, Inc.
-;; Author: Roland McGrath <roland@gnu.ai.mit.edu>
+;; Author: Roland McGrath <roland@gnu.org>
+;; Maintainer: FSF
;; Keywords: lisp, extensions
-;;; This program 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.
-;;;
-;;; This program 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.
-;;;
-;;; A copy of the GNU General Public License can be obtained from this
-;;; program's author (send electronic mail to roland@ai.mit.edu) or from
-;;; the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA
-;;; 02139, USA.
+;; 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, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
;;; Commentary:
-;;; map-y-or-n-p is a general-purpose question-asking function.
-;;; It asks a series of y/n questions (a la y-or-n-p), and decides to
-;;; applies an action to each element of a list based on the answer.
-;;; The nice thing is that you also get some other possible answers
-;;; to use, reminiscent of query-replace: ! to answer y to all remaining
-;;; questions; ESC or q to answer n to all remaining questions; . to answer
-;;; y once and then n for the remainder; and you can get help with C-h.
+;; map-y-or-n-p is a general-purpose question-asking function.
+;; It asks a series of y/n questions (a la y-or-n-p), and decides to
+;; apply an action to each element of a list based on the answer.
+;; The nice thing is that you also get some other possible answers
+;; to use, reminiscent of query-replace: ! to answer y to all remaining
+;; questions; ESC or q to answer n to all remaining questions; . to answer
+;; y once and then n for the remainder; and you can get help with C-h.
;;; Code:
-;;;###autoload
(defun map-y-or-n-p (prompter actor list &optional help action-alist
no-cursor-in-echo-area)
"Ask a series of boolean questions.
Returns the number of actions taken."
(let* ((actions 0)
user-keys mouse-event map prompt char elt tail def
+ ;; Non-nil means we should use mouse menus to ask.
+ use-menus
delayed-switch-frame
(next (if (or (and list (symbolp list))
(subrp list)
list (cdr list))
t)
nil))))))
- (if (listp last-nonmenu-event)
+ (if (and (listp last-nonmenu-event)
+ use-dialog-box)
;; Make a list describing a dialog box.
- (let ((object (capitalize (nth 0 help)))
- (objects (capitalize (nth 1 help)))
- (action (capitalize (nth 2 help))))
- (setq map (` (("Yes" . act) ("No" . skip) ("Quit" . exit)
- ((, (if help (concat action " " object " And Quit")
- "Do it and Quit")) . act-and-exit)
- ((, (if help (concat action " All " objects)
- "Do All")) . automatic)
- (,@ (mapcar (lambda (elt)
- (cons (capitalize (nth 2 elt))
- (vector (nth 1 elt))))
- action-alist))))
- mouse-event last-nonmenu-event))
+ (let ((object (if help (capitalize (nth 0 help))))
+ (objects (if help (capitalize (nth 1 help))))
+ (action (if help (capitalize (nth 2 help)))))
+ (setq map `(("Yes" . act) ("No" . skip) ("Quit" . exit)
+ (,(if help (concat action " " object " And Quit")
+ "Do it and Quit") . act-and-exit)
+ (,(if help (concat action " All " objects)
+ "Do All") . automatic)
+ ,@(mapcar (lambda (elt)
+ (cons (capitalize (nth 2 elt))
+ (vector (nth 1 elt))))
+ action-alist))
+ use-menus t
+ mouse-event last-nonmenu-event))
(setq user-keys (if action-alist
(concat (mapconcat (function
(lambda (elt)
(unwind-protect
(progn
(if (stringp prompter)
- (setq prompter (` (lambda (object)
- (format (, prompter) object)))))
+ (setq prompter `(lambda (object)
+ (format ,prompter object))))
(while (funcall next)
(setq prompt (funcall prompter elt))
(cond ((stringp prompt)
;; Prompt the user about this object.
(setq quit-flag nil)
- (if mouse-event
- (setq def (or (x-popup-dialog mouse-event
+ (if use-menus
+ (setq def (or (x-popup-dialog (or mouse-event use-menus)
(cons prompt map))
'quit))
;; Prompt in the echo area.
(message "%s(y, n, !, ., q, %sor %s) "
prompt user-keys
(key-description (vector help-char)))
- (setq char (read-event))
+ (if minibuffer-auto-raise
+ (raise-frame (window-frame (minibuffer-window))))
+ (while (progn
+ (setq char (read-event))
+ ;; If we get -1, from end of keyboard
+ ;; macro, try again.
+ (equal char -1)))
;; Show the answer to the question.
(message "%s(y, n, !, ., q, %sor %s) %s"
prompt user-keys
next (function (lambda () nil))))
((or (eq def 'quit) (eq def 'exit-prefix))
(setq quit-flag t)
- (setq next (` (lambda ()
- (setq next '(, next))
- '(, elt)))))
+ (setq next `(lambda ()
+ (setq next ',next)
+ ',elt)))
((eq def 'automatic)
;; Act on this and all following objects.
(if (funcall prompter elt)
(concat
(format "Type SPC or `y' to %s the current %s;
DEL or `n' to skip the current %s;
+RET or `q' to exit (skip all remaining %s);
! to %s all remaining %s;
ESC or `q' to exit;\n"
- action object object action objects)
+ action object object objects action
+ objects)
(mapconcat (function
(lambda (elt)
(format "%c to %s"
(set-buffer standard-output)
(help-mode)))
- (setq next (` (lambda ()
- (setq next '(, next))
- '(, elt)))))
+ (setq next `(lambda ()
+ (setq next ',next)
+ ',elt)))
((vectorp def)
;; A user-defined key.
(if (funcall (aref def 0) elt) ;Call its function.
;; The function has eaten this object.
(setq actions (1+ actions))
;; Regurgitated; try again.
- (setq next (` (lambda ()
- (setq next '(, next))
- '(, elt))))))
+ (setq next `(lambda ()
+ (setq next ',next)
+ ',elt))))
((and (consp char)
(eq (car char) 'switch-frame))
;; switch-frame event. Put it off until we're done.
(setq delayed-switch-frame char)
- (setq next (` (lambda ()
- (setq next '(, next))
- '(, elt)))))
+ (setq next `(lambda ()
+ (setq next ',next)
+ ',elt)))
(t
;; Random char.
(message "Type %s for help."
(key-description (vector help-char)))
(beep)
(sit-for 1)
- (setq next (` (lambda ()
- (setq next '(, next))
- '(, elt)))))))
+ (setq next `(lambda ()
+ (setq next ',next)
+ ',elt)))))
(prompt
(funcall actor elt)
(setq actions (1+ actions))))))
HCoop / bpt / emacs.git / blobdiff