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comparison lisp/vm/vm-edit.el @ 0:376386a54a3c r19-14

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Import from CVS: tag r19-14
author cvs
date Mon, 13 Aug 2007 08:45:50 +0200
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1 ;;; Editing VM messages
2 ;;; Copyright (C) 1990, 1991, 1993, 1994 Kyle E. Jones
3 ;;;
4 ;;; This program is free software; you can redistribute it and/or modify
5 ;;; it under the terms of the GNU General Public License as published by
6 ;;; the Free Software Foundation; either version 1, or (at your option)
7 ;;; any later version.
8 ;;;
9 ;;; This program is distributed in the hope that it will be useful,
10 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
11 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 ;;; GNU General Public License for more details.
13 ;;;
14 ;;; You should have received a copy of the GNU General Public License
15 ;;; along with this program; if not, write to the Free Software
16 ;;; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17
18 (provide 'vm-edit)
19
20 (defun vm-edit-message (&optional prefix-argument)
21 "Edit the current message. Prefix arg means mark as unedited instead.
22 If editing, the current message is copied into a temporary buffer, and
23 this buffer is selected for editing. The major mode of this buffer is
24 controlled by the variable vm-edit-message-mode. The hooks specified
25 in vm-edit-message-hook are run just prior to returning control to the user
26 for editing.
27
28 Use C-c ESC when you have finished editing the message. The message
29 will be inserted into its folder replacing the old version of the
30 message. If you don't want your edited version of the message to
31 replace the original, use C-c C-] and the edit will be aborted."
32 (interactive "P")
33 (vm-follow-summary-cursor)
34 (vm-select-folder-buffer)
35 (vm-check-for-killed-summary)
36 (vm-error-if-folder-read-only)
37 (vm-error-if-folder-empty)
38 (if (and (vm-virtual-message-p (car vm-message-pointer))
39 (null (vm-virtual-messages-of (car vm-message-pointer))))
40 (error "Can't edit unmirrored virtual messages."))
41 (if prefix-argument
42 (if (vm-edited-flag (car vm-message-pointer))
43 (progn
44 (vm-set-edited-flag-of (car vm-message-pointer) nil)
45 (vm-update-summary-and-mode-line)))
46 (let ((mp vm-message-pointer)
47 (offset (- (point) (vm-headers-of (car vm-message-pointer))))
48 (edit-buf (vm-edit-buffer-of (car vm-message-pointer)))
49 (folder-buffer (current-buffer)))
50 (if (not (and edit-buf (buffer-name edit-buf)))
51 (progn
52 (vm-save-restriction
53 (widen)
54 (setq edit-buf
55 (generate-new-buffer
56 (format "edit of %s's note re: %s"
57 (vm-su-full-name (car vm-message-pointer))
58 (vm-su-subject (car vm-message-pointer)))))
59 (vm-set-edit-buffer-of (car mp) edit-buf)
60 (copy-to-buffer edit-buf
61 (vm-headers-of (car mp))
62 (vm-text-end-of (car mp))))
63 (set-buffer edit-buf)
64 (set-buffer-modified-p nil)
65 (goto-char (point-min))
66 (if (< offset 0)
67 (search-forward "\n\n" nil t)
68 (forward-char offset))
69 (funcall (or vm-edit-message-mode 'text-mode))
70 (use-local-map vm-edit-message-map)
71 ;; (list (car mp)) because a different message may
72 ;; later be stuffed into a cons linked that is linked
73 ;; into the folder's message list.
74 (setq vm-message-pointer (list (car mp))
75 vm-mail-buffer folder-buffer
76 vm-system-state 'editing)
77 (run-hooks 'vm-edit-message-hook)
78 (message
79 (substitute-command-keys
80 "Type \\[vm-edit-message-end] to end edit, \\[vm-edit-message-abort] to abort with no change.")))
81 (set-buffer edit-buf))
82 (if (and vm-frame-per-edit (vm-multiple-frames-possible-p))
83 (let ((w (vm-get-buffer-window edit-buf)))
84 (if (null w)
85 (progn
86 (vm-goto-new-frame 'edit)
87 (vm-set-hooks-for-frame-deletion))
88 (save-excursion
89 (select-window w)
90 (and vm-warp-mouse-to-new-frame
91 (vm-warp-mouse-to-frame-maybe (vm-window-frame w)))))))
92 (vm-display edit-buf t '(vm-edit-message vm-edit-message-other-frame)
93 (list this-command 'editing-message)))))
94
95 (defun vm-edit-message-other-frame (&optional prefix)
96 "Like vm-edit-message, but run in a newly created frame."
97 (interactive "P")
98 (if (vm-multiple-frames-possible-p)
99 (vm-goto-new-frame 'edit))
100 (let ((vm-search-other-frames nil)
101 (vm-frame-per-edit nil))
102 (vm-edit-message prefix))
103 (if (vm-multiple-frames-possible-p)
104 (vm-set-hooks-for-frame-deletion)))
105
106 (defun vm-discard-cached-data (&optional count)
107 "Discard cached information about the current message.
108 When VM gathers information from the headers of a message, it stores it
109 internally for future reference. This command causes VM to forget this
110 information, and VM will be forced to search the headers of the message
111 again for these data. VM will also have to decide again which headers
112 should be displayed and which should not. Therefore this command is
113 useful if you change the value of vm-visible-headers or
114 vm-invisible-header-regexp in the midst of a VM session.
115
116 Numeric prefix argument N means to discard data from the current message
117 plus the next N-1 messages. A negative N means discard data from the
118 current message and the previous N-1 messages.
119
120 When invoked on marked messages (via vm-next-command-uses-marks),
121 data is discarded only from the marked messages in the current folder."
122 (interactive "p")
123 (or count (setq count 1))
124 (vm-follow-summary-cursor)
125 (vm-select-folder-buffer)
126 (vm-check-for-killed-summary)
127 (vm-error-if-folder-empty)
128 (let ((mlist (vm-select-marked-or-prefixed-messages count)) m)
129 (while mlist
130 (setq m (vm-real-message-of (car mlist)))
131 (if vm-thread-obarray
132 (vm-unthread-message m t))
133 (fillarray (vm-cache-of m) nil)
134 (vm-set-vheaders-of m nil)
135 (vm-set-vheaders-regexp-of m nil)
136 (vm-set-text-of m nil)
137 (if vm-thread-obarray
138 (vm-build-threads (list m)))
139 (if vm-summary-show-threads
140 (vm-sort-messages "thread"))
141 (let ((v-list (vm-virtual-messages-of m)))
142 (save-excursion
143 (while v-list
144 (set-buffer (vm-buffer-of (car v-list)))
145 (if vm-thread-obarray
146 (vm-build-threads (list (car v-list))))
147 (if vm-summary-show-threads
148 (vm-sort-messages "thread"))
149 (setq v-list (cdr v-list)))))
150 (vm-mark-for-summary-update m)
151 (setq mlist (cdr mlist))))
152 (vm-display nil nil '(vm-discard-cached-data) '(vm-discard-cached-data))
153 (vm-update-summary-and-mode-line))
154
155 (defun vm-edit-message-end ()
156 "End the edit of a message and copy the result to its folder."
157 (interactive)
158 (if (null vm-message-pointer)
159 (error "This is not a VM message edit buffer."))
160 (if (null (buffer-name (vm-buffer-of (car vm-message-pointer))))
161 (error "The folder buffer for this message has been killed."))
162 ;; make sure the message ends with a newline
163 (goto-char (point-max))
164 (and (/= (preceding-char) ?\n) (insert ?\n))
165 ;; munge message separators found in the edited message to
166 ;; prevent message from being split into several messages.
167 (vm-munge-message-separators (vm-message-type-of (car vm-message-pointer))
168 (point-min) (point-max))
169 ;; for From_-with-Content-Length recompute the Content-Length header
170 (if (eq (vm-message-type-of (car vm-message-pointer))
171 'From_-with-Content-Length)
172 (let ((buffer-read-only nil)
173 length)
174 (goto-char (point-min))
175 ;; first delete all copies of Content-Length
176 (while (and (re-search-forward vm-content-length-search-regexp nil t)
177 (null (match-beginning 1))
178 (progn (goto-char (match-beginning 0))
179 (vm-match-header vm-content-length-header)))
180 (delete-region (vm-matched-header-start) (vm-matched-header-end)))
181 ;; now compute the message body length
182 (goto-char (point-min))
183 (search-forward "\n\n" nil 0)
184 (setq length (- (point-max) (point)))
185 ;; insert the header
186 (goto-char (point-min))
187 (insert vm-content-length-header " " (int-to-string length) "\n")))
188 (let ((edit-buf (current-buffer))
189 (mp vm-message-pointer))
190 (if (buffer-modified-p)
191 (progn
192 (widen)
193 (save-excursion
194 (set-buffer (vm-buffer-of (vm-real-message-of (car mp))))
195 (if (not (memq (vm-real-message-of (car mp)) vm-message-list))
196 (error "The original copy of this message has been expunged."))
197 (vm-save-restriction
198 (widen)
199 (goto-char (vm-headers-of (vm-real-message-of (car mp))))
200 (let ((vm-message-pointer mp)
201 opoint
202 (buffer-read-only nil))
203 (setq opoint (point))
204 (insert-buffer-substring edit-buf)
205 (delete-region
206 (point) (vm-text-end-of (vm-real-message-of (car mp))))
207 (vm-discard-cached-data))
208 (vm-set-edited-flag-of (car mp) t)
209 (vm-set-edit-buffer-of (car mp) nil))
210 (set-buffer (vm-buffer-of (car mp)))
211 (if (eq (vm-real-message-of (car mp))
212 (vm-real-message-of (car vm-message-pointer)))
213 (vm-preview-current-message)
214 (vm-update-summary-and-mode-line))))
215 (message "No change."))
216 (vm-display edit-buf nil '(vm-edit-message-end)
217 '(vm-edit-message-end reading-message startup))
218 (set-buffer-modified-p nil)
219 (kill-buffer edit-buf)))
220
221 (defun vm-edit-message-abort ()
222 "Abort the edit of a message, forgetting changes to the message."
223 (interactive)
224 (if (null vm-message-pointer)
225 (error "This is not a VM message edit buffer."))
226 (if (null (buffer-name (vm-buffer-of (vm-real-message-of (car vm-message-pointer)))))
227 (error "The folder buffer for this message has been killed."))
228 (vm-set-edit-buffer-of (car vm-message-pointer) nil)
229 (vm-display (current-buffer) nil
230 '(vm-edit-message-abort)
231 '(vm-edit-message-abort reading-message startup))
232 (set-buffer-modified-p nil)
233 (kill-buffer (current-buffer))
234 (message "Aborted, no change."))