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;;; tpu-mapper.el --- create a TPU-edt X-windows keymap file

;; Copyright (C) 1993, 1994, 1995, 2001, 2002, 2003, 2004,
;;   2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.

;; Author: Rob Riepel <riepel@networking.stanford.edu>
;; Maintainer: Rob Riepel <riepel@networking.stanford.edu>
;; Keywords: emulations
;; Package: tpu-edt

;; 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 3 of the License, 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.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:

;;  This Emacs Lisp program can be used to create an Emacs Lisp file that
;;  defines the TPU-edt keypad for Emacs running on X-Windows.

;;; Code:

;;;
;;;  Key variables
;;;
(defvar tpu-kp4 nil)
(defvar tpu-kp5 nil)
(defvar tpu-key nil)
(defvar tpu-enter nil)
(defvar tpu-return nil)
(defvar tpu-key-seq nil)
(defvar tpu-enter-seq nil)
(defvar tpu-return-seq nil)

;;;
;;;  Key mapping function
;;;
(defun tpu-map-key (ident descrip func gold-func)
  (interactive)
  (if (featurep 'xemacs)
      (progn
	(setq tpu-key-seq (read-key-sequence
                           (format "Press %s%s: " ident descrip))
              tpu-key (format "[%s]" (event-key (aref tpu-key-seq 0))))
	(unless (equal tpu-key tpu-return)
          (set-buffer "Keys")
          (insert (format"(global-set-key %s %s)\n" tpu-key func))
          (set-buffer "Gold-Keys")
          (insert (format "(define-key GOLD-map %s %s)\n" tpu-key gold-func))))
    (message "Press %s%s: " ident descrip)
    (setq tpu-key-seq (read-event)
          tpu-key (format "[%s]" tpu-key-seq))
    (unless (equal tpu-key tpu-return)
      (set-buffer "Keys")
      (insert (format"(define-key tpu-global-map %s %s)\n" tpu-key func))
      (set-buffer "Gold-Keys")
      (insert (format "(define-key tpu-gold-map %s %s)\n" tpu-key gold-func))))
  (set-buffer "Directions")
  tpu-key)

;;;###autoload
(defun tpu-mapper ()
  "Create an Emacs lisp file defining the TPU-edt keypad for X-windows.

This command displays an instruction screen showing the TPU-edt keypad
and asks you to press the TPU-edt editing keys.  It uses the keys you
press to create an Emacs Lisp file that will define a TPU-edt keypad
for your X server.  You can even re-arrange the standard EDT keypad to
suit your tastes (or to cope with those silly Sun and PC keypads).

Finally, you will be prompted for the name of the file to store the key
definitions.  If you chose the default, TPU-edt will find it and load it
automatically.  If you specify a different file name, you will need to
set the variable ``tpu-xkeys-file'' before starting TPU-edt.  Here's how
you might go about doing that in your .emacs file.

  (setq tpu-xkeys-file (expand-file-name \"~/.my-emacs-x-keys\"))
  (tpu-edt)

Known Problems:

Sometimes, tpu-mapper will ignore a key you press, and just continue to
prompt for the same key.  This can happen when your window manager sucks
up the key and doesn't pass it on to Emacs, or it could be an Emacs bug.
Either way, there's nothing that tpu-mapper can do about it.  You must
press RETURN, to skip the current key and continue.  Later, you and/or
your local X guru can try to figure out why the key is being ignored."
  (interactive)

  ;; Make sure we're running X-windows

  (if (not window-system)
      (error "tpu-mapper requires running Emacs with an X display"))

  ;; Make sure the window is big enough to display the instructions

  (if (featurep 'xemacs) (set-screen-size (selected-screen) 80 36)
    (set-frame-size (selected-frame) 80 36))

  ;; Create buffers - Directions, Keys, Gold-Keys

  (if (not (get-buffer "Directions")) (generate-new-buffer "Directions"))
  (if (not (get-buffer "Keys")) (generate-new-buffer "Keys"))
  (if (not (get-buffer "Gold-Keys")) (generate-new-buffer "Gold-Keys"))

  ;; Put headers in the Keys buffer

  (set-buffer "Keys")
  (insert "\
;;  Key definitions for TPU-edt
;;
")

  ;; Display directions

  (switch-to-buffer "Directions")
  (insert "
    This program prompts you to press keys to create a custom keymap file
    for use with the x-windows version of Emacs and TPU-edt.

    Start by pressing the RETURN key, and continue by pressing the keys
    specified in the mini-buffer.  You can re-arrange the TPU-edt keypad
    by pressing any key you want at any prompt.  If you want to entirely
    omit a key, just press RETURN at the prompt.

    Here's a picture of the standard TPU/edt keypad for reference:

          _______________________    _______________________________
         | HELP  |      Do       |  |       |       |       |       |
         |KeyDefs|               |  |       |       |       |       |
         |_______|_______________|  |_______|_______|_______|_______|
          _______________________    _______________________________
         | Find  |Insert |Remove |  | Gold  | HELP  |FndNxt | Del L |
         |       |       |Sto Tex|  |  key  |E-Help | Find  |Undel L|
         |_______|_______|_______|  |_______|_______|_______|_______|
         |Select |Pre Scr|Nex Scr|  | Page  | Sect  |Append | Del W |
         | Reset |Pre Win|Nex Win|  |  Do   | Fill  |Replace|Undel W|
         |_______|_______|_______|  |_______|_______|_______|_______|
                 |Move up|          |Forward|Reverse|Remove | Del C |
                 |  Top  |          |Bottom |  Top  |Insert |Undel C|
          _______|_______|_______   |_______|_______|_______|_______|
         |Mov Lef|Mov Dow|Mov Rig|  | Word  |  EOL  | Char  |       |
         |StaOfLi|Bottom |EndOfLi|  |ChngCas|Del EOL|SpecIns| Enter |
         |_______|_______|_______|  |_______|_______|_______|       |
                                    |     Line      |Select | Subs  |
                                    |   Open Line   | Reset |       |
                                    |_______________|_______|_______|


")
  (delete-other-windows)
  (goto-char (point-min))

  ;; Save <CR> for future reference

  (cond
   ((featurep 'xemacs)
    (setq tpu-return-seq (read-key-sequence "Hit carriage-return <CR> to continue "))
    (setq tpu-return (concat "[" (format "%s" (event-key (aref tpu-return-seq 0))) "]")))
   (t
    (message "Hit carriage-return <CR> to continue ")
    (setq tpu-return-seq (read-event))
    (setq tpu-return (concat "[" (format "%s" tpu-return-seq) "]"))))

  ;; Build the keymap file

  (set-buffer "Keys")
  (insert "
;;  Arrows
;;
")
  (set-buffer "Gold-Keys")
  (insert "
;;  GOLD Arrows
;;
")
  (set-buffer "Directions")

  (tpu-map-key "Up-Arrow"     ""  "'tpu-previous-line"  "'tpu-move-to-beginning")
  (tpu-map-key "Down-arrow"   ""  "'tpu-next-line"      "'tpu-move-to-end")
  (tpu-map-key "Right-arrow"  ""  "'tpu-forward-char"   "'end-of-line")
  (tpu-map-key "Left-arrow"   ""  "'tpu-backward-char"  "'beginning-of-line")

  (set-buffer "Keys")
  (insert "
;;  PF keys
;;
")
  (set-buffer "Gold-Keys")
  (insert "
;;  GOLD PF keys
;;
")
  (set-buffer "Directions")

  (tpu-map-key "PF1"  " - The GOLD key"               "GOLD-map"                 "'keyboard-quit")
  (tpu-map-key "PF2"  " - The Keypad Help key"        "'tpu-help"                 "'help-for-help")
  (tpu-map-key "PF3"  " - The Find/Find-Next key"     "'tpu-search-again"         "'tpu-search")
  (tpu-map-key "PF4"  " - The Del/Undelete Line key"  "'tpu-delete-current-line"  "'tpu-undelete-lines")

  (set-buffer "Keys")
  (insert "
;;  KP0-9 KP- KP, KP. and KPenter
;;
")
  (set-buffer "Gold-Keys")
  (insert "
;;  GOLD KP0-9 KP- KP, and KPenter
;;
")
  (set-buffer "Directions")

  (tpu-map-key "KP-0"      " - The Line/Open-Line key"               "'tpu-line"                 "'open-line")
  (tpu-map-key "KP-1"      " - The Word/Change-Case key"             "'tpu-word"                 "'tpu-change-case")
  (tpu-map-key "KP-2"      " - The EOL/Delete-EOL key"               "'tpu-end-of-line"          "'tpu-delete-to-eol")
  (tpu-map-key "KP-3"      " - The Character/Special-Insert key"     "'tpu-char"                 "'tpu-special-insert")
  (setq tpu-kp4 (tpu-map-key "KP-4"      " - The Forward/Bottom key"               "'tpu-advance-direction"    "'tpu-move-to-end"))
  (setq tpu-kp5 (tpu-map-key "KP-5"      " - The Reverse/Top key"                  "'tpu-backup-direction"     "'tpu-move-to-beginning"))
  (tpu-map-key "KP-6"      " - The Remove/Insert key"                "'tpu-cut"                  "'tpu-paste")
  (tpu-map-key "KP-7"      " - The Page/Do key"                      "'tpu-page"                 "'execute-extended-command")
  (tpu-map-key "KP-8"      " - The Section/Fill key"                 "'tpu-scroll-window"        "'tpu-fill")
  (tpu-map-key "KP-9"      " - The Append/Replace key"               "'tpu-append-region"        "'tpu-replace")
  (tpu-map-key "KP--"      " - The Delete/Undelete Word key"         "'tpu-delete-current-word"  "'tpu-undelete-words")
  (tpu-map-key "KP-,"      " - The Delete/Undelete Character key"    "'tpu-delete-current-char"  "'tpu-undelete-char")
  (tpu-map-key "KP-."      " - The Select/Reset key"                 "'tpu-select"               "'tpu-unselect")
  (tpu-map-key "KP-Enter"  " - The Enter key on the numeric keypad"  "'newline"                  "'tpu-substitute")
  ;; Save the enter key
  (setq tpu-enter tpu-key)
  (setq tpu-enter-seq tpu-key-seq)

  (set-buffer "Keys")
  (insert "
;;  Editing keypad (find, insert, remove)
;;                 (select, prev, next)
;;
")
  (set-buffer "Gold-Keys")
  (insert "
;;  GOLD Editing keypad (find, insert, remove)
;;                      (select, prev, next)
;;
")
  (set-buffer "Directions")

  (tpu-map-key "Find"      " - The Find key on the editing keypad"       "'tpu-search"              "'nil")
  (tpu-map-key "Insert"    " - The Insert key on the editing keypad"     "'tpu-paste"               "'nil")
  (tpu-map-key "Remove"    " - The Remove key on the editing keypad"     "'tpu-cut"                 "'tpu-store-text")
  (tpu-map-key "Select"    " - The Select key on the editing keypad"     "'tpu-select"              "'tpu-unselect")
  (tpu-map-key "Prev Scr"  " - The Prev Scr key on the editing keypad"   "'tpu-scroll-window-down"  "'tpu-previous-window")
  (tpu-map-key "Next Scr"  " - The Next Scr key on the editing keypad"   "'tpu-scroll-window-up"    "'tpu-next-window")

  (set-buffer "Keys")
  (insert "
;;  F10-14 Help Do F17
;;
")
  (set-buffer "Gold-Keys")
  (insert "
;;  GOLD F10-14 Help Do F17
;;
")
  (set-buffer "Directions")

  (tpu-map-key "F10"       " - Invokes the Exit function on VT200+ terminals"  "'tpu-exit"                    "'nil")
  (tpu-map-key "F11"       " - Inserts an Escape character into the text"      "'tpu-insert-escape"           "'nil")
  (tpu-map-key "Backspace" " - Not Delete nor ^H!  Sometimes on the F12 key"   "'tpu-next-beginning-of-line" "'nil")
  (tpu-map-key "F13"       " - Invokes the delete previous word function"      "'tpu-delete-previous-word"   "'nil")
  (tpu-map-key "F14"       " - Toggles insert/overstrike modes"                "'tpu-toggle-overwrite-mode"  "'nil")
  (tpu-map-key "Help"      " - Brings up the help screen, same as PF2"         "'tpu-help"                   "'describe-bindings")
  (tpu-map-key "Do"        " - Invokes the COMMAND function"                   "'execute-extended-command"   "'nil")
  (tpu-map-key "F17"       ""                                                  "'tpu-goto-breadcrumb"        "'tpu-drop-breadcrumb")

  (set-buffer "Gold-Keys")
  (cond
   ((not (equal tpu-enter tpu-return))
    (insert "
;;  Minibuffer map additions to make KP_enter = RET
;;
")

    (insert (format "(define-key minibuffer-local-map %s 'exit-minibuffer)\n" tpu-enter))
    ;; These are not necessary because they are inherited.
    ;; (insert (format "(define-key minibuffer-local-ns-map %s 'exit-minibuffer)\n" tpu-enter))
    ;; (insert (format "(define-key minibuffer-local-completion-map %s 'exit-minibuffer)\n" tpu-enter))
    (insert (format "(define-key minibuffer-local-must-match-map %s 'minibuffer-complete-and-exit)\n" tpu-enter))))

  (cond
   ((not (or (equal tpu-kp4 tpu-return) (equal tpu-kp5 tpu-return)))
    (insert "
;;  Minibuffer map additions to allow KP-4/5 termination of search strings.
;;
")

    (insert (format "(define-key minibuffer-local-map %s 'tpu-search-forward-exit)\n" tpu-kp4))
    (insert (format "(define-key minibuffer-local-map %s 'tpu-search-backward-exit)\n" tpu-kp5))))

  (insert "
;;  Define the tpu-help-enter/return symbols
;;
")

  (cond ((featurep 'xemacs)
	 (insert (format "(setq tpu-help-enter \"%s\")\n" tpu-enter-seq))
	 (insert (format "(setq tpu-help-return \"%s\")\n" tpu-return-seq))
	 (insert "(setq tpu-help-N \"[#<keypress-event N>]\")\n")
	 (insert "(setq tpu-help-n \"[#<keypress-event n>]\")\n")
	 (insert "(setq tpu-help-P \"[#<keypress-event P>]\")\n")
	 (insert "(setq tpu-help-p \"[#<keypress-event p>]\")\n"))
	(t
	 (insert (format "(setq tpu-help-enter \"%s\")\n" tpu-enter))))

  (append-to-buffer "Keys" 1 (point))
  (set-buffer "Keys")

  ;; Save the key mapping program

  (let ((file
	 (convert-standard-filename
	  (if (featurep 'xemacs) "~/.tpu-lucid-keys" "~/.tpu-keys"))))
    (set-visited-file-name
     (read-file-name (format "Save key mapping to file (default %s): " file) "" file)))
  (save-buffer)

  ;; Load the newly defined keys and clean up

  (require 'tpu-edt)
  (eval-buffer)
  (kill-buffer (current-buffer))
  (kill-buffer "*scratch*")
  (kill-buffer "Gold-Keys")

  ;; Let them know it worked.

  (switch-to-buffer "Directions")
  (erase-buffer)
  (insert "
    A custom TPU-edt keymap file has been created.

    Press GOLD-k to remove this buffer and continue editing.
")
  (goto-char (point-min)))

;; arch-tag: bab5872f-cd3a-4c1c-aedb-047b67646f6c
;;; tpu-mapper.el ends here