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1 ;;; rmailedit.el --- "RMAIL edit mode" Edit the current message.
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2
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3 ;; Copyright (C) 1985 Free Software Foundation, Inc.
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4
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5 ;; Maintainer: FSF
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6 ;; Keywords: mail
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7
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8 ;; This file is part of XEmacs.
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9
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10 ;; XEmacs is free software; you can redistribute it and/or modify it
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11 ;; under the terms of the GNU General Public License as published by
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12 ;; the Free Software Foundation; either version 2, or (at your option)
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13 ;; any later version.
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14
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15 ;; XEmacs is distributed in the hope that it will be useful, but
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16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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18 ;; General Public License for more details.
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19
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20 ;; You should have received a copy of the GNU General Public License
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21 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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22 ;; Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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23
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24 ;;; Code:
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25
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26 (require 'rmail)
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27
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28 (defvar rmail-edit-map nil)
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29 (if rmail-edit-map
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30 nil
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31 (setq rmail-edit-map (make-sparse-keymap))
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32 (set-keymap-parent rmail-edit-map text-mode-map)
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33 (set-keymap-name rmail-edit-map 'rmail-edit-map)
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34 (define-key rmail-edit-map "\C-c\C-c" 'rmail-cease-edit)
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35 (define-key rmail-edit-map "\C-c\C-]" 'rmail-abort-edit))
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36
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37 ;; Rmail Edit mode is suitable only for specially formatted data.
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38 (put 'rmail-edit-mode 'mode-class 'special)
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39
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40 (defun rmail-edit-mode ()
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41 "Major mode for editing the contents of an RMAIL message.
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42 The editing commands are the same as in Text mode, together with two commands
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43 to return to regular RMAIL:
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44 * rmail-abort-edit cancels the changes
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45 you have made and returns to RMAIL
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46 * rmail-cease-edit makes them permanent.
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47 \\{rmail-edit-map}"
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48 (use-local-map rmail-edit-map)
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49 (setq major-mode 'rmail-edit-mode)
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50 (setq mode-name "RMAIL Edit")
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51 (if (boundp 'mode-line-modified)
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52 (setq mode-line-modified (default-value 'mode-line-modified))
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53 (setq mode-line-format (default-value 'mode-line-format)))
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54 (run-hooks 'text-mode-hook 'rmail-edit-mode-hook))
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55
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56 (defvar rmail-old-text) ;jwz
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57 (defun rmail-edit-current-message ()
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58 "Edit the contents of this message."
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59 (interactive)
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60 (rmail-edit-mode)
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61 (make-local-variable 'rmail-old-text)
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62 (setq rmail-old-text (buffer-substring (point-min) (point-max)))
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63 (setq buffer-read-only nil)
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64 (set-buffer-modified-p (buffer-modified-p))
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65 ;; Make mode line update.
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66 (if (and (eq (key-binding "\C-c\C-c") 'rmail-cease-edit)
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67 (eq (key-binding "\C-c\C-]") 'rmail-abort-edit))
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68 (message "Editing: Type C-c C-c to return to Rmail, C-c C-] to abort")
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69 (message (substitute-command-keys
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70 "Editing: Type \\[rmail-cease-edit] to return to Rmail, \\[rmail-abort-edit] to abort"))))
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71
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72 (defun rmail-cease-edit ()
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73 "Finish editing message; switch back to Rmail proper."
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74 (interactive)
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75 ;; Make sure buffer ends with a newline.
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76 (save-excursion
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77 (goto-char (point-max))
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78 (if (/= (preceding-char) ?\n)
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79 (insert "\n"))
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80 ;; Adjust the marker that points to the end of this message.
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81 (set-marker (aref rmail-message-vector (1+ rmail-current-message))
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82 (point)))
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83 (let ((old rmail-old-text))
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84 ;; Update the mode line.
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85 (set-buffer-modified-p (buffer-modified-p))
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86 (rmail-mode-1)
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87 (if (and (= (length old) (- (point-max) (point-min)))
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88 (string= old (buffer-substring (point-min) (point-max))))
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89 ()
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90 (setq old nil)
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91 (rmail-set-attribute "edited" t)
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92 (if (boundp 'rmail-summary-vector)
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93 (progn
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94 (aset rmail-summary-vector (1- rmail-current-message) nil)
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95 (save-excursion
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96 (rmail-widen-to-current-msgbeg
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97 (function (lambda ()
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98 (forward-line 2)
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99 (if (looking-at "Summary-line: ")
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100 (let ((buffer-read-only nil))
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101 (delete-region (point)
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102 (progn (forward-line 1)
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103 (point))))))))
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104 (rmail-show-message))))))
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105 (setq buffer-read-only t))
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106
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107 (defun rmail-abort-edit ()
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108 "Abort edit of current message; restore original contents."
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109 (interactive)
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110 (delete-region (point-min) (point-max))
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111 (insert rmail-old-text)
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112 (rmail-cease-edit))
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113
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114 ;;; rmailedit.el ends here
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