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date Mon, 13 Aug 2007 08:45:50 +0200
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1 ;;!emacs
2 ;;
3 ;; FILE: hrmail.el
4 ;; SUMMARY: Support for Hyperbole buttons in mail reader: Rmail.
5 ;; USAGE: GNU Emacs Lisp Library
6 ;; KEYWORDS: hypermedia, mail
7 ;;
8 ;; AUTHOR: Bob Weiner
9 ;; ORG: Brown U.
10 ;;
11 ;; ORIG-DATE: 9-May-91 at 04:22:02
12 ;; LAST-MOD: 19-May-95 at 15:09:04 by Bob Weiner
13 ;;
14 ;; This file is part of Hyperbole.
15 ;; Available for use and distribution under the same terms as GNU Emacs.
16 ;;
17 ;; Copyright (C) 1991-1995, Free Software Foundation, Inc.
18 ;; Developed with support from Motorola Inc.
19 ;;
20 ;; DESCRIPTION:
21 ;;
22 ;; Automatically configured for use in "hyperbole.el".
23 ;; If hsite loading fails prior to initializing Hyperbole Rmail support,
24 ;;
25 ;; {M-x Rmail-init RTN}
26 ;;
27 ;; will do it.
28 ;;
29 ;; DESCRIP-END.
30
31 ;;; ************************************************************************
32 ;;; Other required Elisp libraries
33 ;;; ************************************************************************
34
35 (require 'hmail)
36 (require 'hact)
37 (load "hsmail")
38 (require 'rmail)
39 (load "rmailedit")
40 (provide 'rmailedit)
41
42 ;;; ************************************************************************
43 ;;; Public variables
44 ;;; ************************************************************************
45
46 ;;; ************************************************************************
47 ;;; Public functions
48 ;;; ************************************************************************
49
50 (defun Rmail-init ()
51 "Initializes Hyperbole support for Rmail mail reading."
52 (interactive)
53 (setq hmail:composer 'mail-mode
54 hmail:lister 'rmail-summary-mode
55 hmail:modifier 'rmail-edit-mode
56 hmail:reader 'rmail-mode)
57 (var:append 'rmail-show-message-hook '(hmail:msg-narrow))
58 ;;
59 ;;
60 ;; Setup public abstract interface to Hyperbole defined mail
61 ;; reader-specific functions used in "hmail.el".
62 ;;
63 (rmail:init)
64 ;;
65 ;; Setup private abstract interface to mail reader-specific functions
66 ;; used in "hmail.el".
67 ;;
68 (fset 'rmail:get-new 'rmail-get-new-mail)
69 (fset 'rmail:msg-forward 'rmail-forward)
70 (fset 'rmail:summ-msg-to 'rmail-summary-goto-msg)
71 (fset 'rmail:summ-new 'rmail-new-summary)
72 (if (interactive-p)
73 (message "Hyperbole RMAIL mail reader support initialized."))
74 )
75
76 (defun Rmail-msg-hdrs-full (toggled)
77 "If TOGGLED is non-nil, toggle full/hidden headers, else show full headers."
78 (save-excursion
79 (if (or toggled
80 (let ((tog nil))
81 (save-excursion
82 (save-restriction
83 (rmail-maybe-set-message-counters)
84 (narrow-to-region (rmail-msgbeg rmail-current-message)
85 (point-max))
86 (let ((buffer-read-only nil))
87 (goto-char (point-min))
88 (forward-line 1)
89 ;; Need to show full header
90 (if (= (following-char) ?1)
91 (setq tog t)))))
92 tog))
93 (progn (rmail-toggle-header)
94 (setq toggled t)))
95 toggled))
96
97 (defun Rmail-msg-narrow ()
98 "Narrows mail reader buffer to current message.
99 This includes Hyperbole button data."
100 (let ((beg (rmail-msgbeg rmail-current-message))
101 (end (rmail-msgend rmail-current-message)))
102 (narrow-to-region beg end)))
103
104 (defun Rmail-msg-next () (rmail-next-undeleted-message 1))
105
106 (defun Rmail-msg-num ()
107 "Returns number of Rmail message that point is within."
108 (interactive)
109 (let ((count 0) opoint)
110 (save-excursion
111 (while (and (not (eobp))
112 (progn (setq opoint (point))
113 (re-search-backward "^\^_" nil t)))
114 (if (= opoint (point))
115 (backward-char 1)
116 (setq count (1+ count)))))
117 count))
118
119 (defun Rmail-msg-prev () (rmail-previous-undeleted-message 1))
120
121 (defun Rmail-msg-to-p (mail-msg-id mail-file)
122 "Sets current buffer to start of msg with MAIL-MSG-ID in MAIL-FILE.
123 Returns t if successful, else nil."
124 (if (not (file-readable-p mail-file))
125 nil
126 (let ((buf (get-file-buffer mail-file)))
127 (cond (buf
128 (switch-to-buffer buf)
129 (or (eq major-mode 'rmail-mode)
130 (rmail mail-file)))
131 (t (rmail mail-file))))
132 (widen)
133 (goto-char 1)
134 (if (re-search-forward (concat rmail:msg-hdr-prefix
135 (regexp-quote mail-msg-id)) nil t)
136 ;; Found matching msg
137 (progn
138 (setq buffer-read-only t)
139 (rmail-show-message (Rmail-msg-num))
140 t))))
141
142
143 (defun Rmail-msg-widen ()
144 "Widens buffer to full current message including Hyperbole button data."
145 (let ((start (point-min))
146 (end (point-max)))
147 (unwind-protect
148 (save-excursion
149 (widen)
150 (if (re-search-forward "^\^_" nil t)
151 (progn (forward-char -1)
152 (setq end (point)))))
153 (narrow-to-region start end))))
154
155 (defun Rmail-to ()
156 "Sets current buffer to a mail reader buffer."
157 (and (eq major-mode 'rmail-summary-mode) (set-buffer rmail-buffer)))
158
159 (fset 'Rmail-Summ-delete 'rmail-summary-delete-forward)
160
161 (fset 'Rmail-Summ-expunge 'rmail-summary-expunge)
162
163 (fset 'Rmail-Summ-goto 'rmail-summary-goto-msg)
164
165 (defun Rmail-Summ-to ()
166 "Sets current buffer to a mail listing buffer."
167 (and (eq major-mode 'rmail-mode) (set-buffer rmail-summary-buffer)))
168
169 (fset 'Rmail-Summ-undelete-all 'rmail-summary-undelete-many)
170
171 ;;; ************************************************************************
172 ;;; Private functions
173 ;;; ************************************************************************
174
175 ;;;
176 ;;; Overlay version of this function from "rmailedit.el" to include any
177 ;;; hidden Hyperbole button data when computing message length.
178 (defun rmail-cease-edit ()
179 "Finish editing message; switch back to Rmail proper."
180 (interactive)
181 ;; Make sure buffer ends with a newline.
182 (save-excursion
183 (Rmail-msg-widen)
184 (goto-char (point-max))
185 (if (/= (preceding-char) ?\n)
186 (insert "\n"))
187 ;; Adjust the marker that points to the end of this message.
188 (set-marker (aref rmail-message-vector (1+ rmail-current-message))
189 (point))
190 (hmail:msg-narrow)
191 )
192 (let ((old rmail-old-text))
193 ;; Update the mode line.
194 (set-buffer-modified-p (buffer-modified-p))
195 (rmail-mode-1)
196 (if (and (= (length old) (- (point-max) (point-min)))
197 (string= old (buffer-substring (point-min) (point-max))))
198 ()
199 (setq old nil)
200 (rmail-set-attribute "edited" t)
201 (if (boundp 'rmail-summary-vector)
202 (progn
203 (aset rmail-summary-vector (1- rmail-current-message) nil)
204 (save-excursion
205 (rmail-widen-to-current-msgbeg
206 (function (lambda ()
207 (forward-line 2)
208 (if (looking-at "Summary-line: ")
209 (let ((buffer-read-only nil))
210 (delete-region (point)
211 (progn (forward-line 1)
212 (point))))))))
213 (rmail-show-message))))))
214 (setq buffer-read-only t))
215
216
217 ;;; Overlay version of this function from "rmail.el" to include any
218 ;;; Hyperbole button data.
219 (defun rmail-forward (&optional resend)
220 "Forward the current message to another user."
221 (interactive)
222 ;; Resend argument is ignored but for now but is there for Emacs V19 call
223 ;; compatibility.
224 ;;>> this gets set even if we abort. Can't do anything about it, though.
225 (rmail-set-attribute "forwarded" t)
226 (let ((forward-buffer (current-buffer))
227 (subject (concat "["
228 (mail-strip-quoted-names (mail-fetch-field "From"))
229 ": " (or (mail-fetch-field "Subject") "") "]")))
230 (save-restriction
231 (Rmail-msg-widen)
232 ;; If only one window, use it for the mail buffer.
233 ;; Otherwise, use another window for the mail buffer
234 ;; so that the Rmail buffer remains visible
235 ;; and sending the mail will get back to it.
236 (if (if (one-window-p t)
237 (mail nil nil subject)
238 (mail-other-window nil nil subject))
239 (save-excursion
240 (goto-char (point-max))
241 (forward-line 1)
242 (insert-buffer forward-buffer)
243 (hmail:msg-narrow)
244 )))))
245
246 ;;; Overlay version of 'rmail-get-new-mail' from "rmail.el" to highlight
247 ;;; Hyperbole buttons when possible.
248 ;;;
249 (hypb:function-overload 'rmail-get-new-mail nil
250 '(if (fboundp 'hproperty:but-create)
251 (progn (widen) (hproperty:but-create)
252 (rmail-show-message))))
253
254 ;;; Overlay version of 'rmail-new-summary' from "rmailsum.el" to
255 ;;; highlight Hyperbole buttons when possible.
256 ;;;
257 (or (fboundp 'rmail-new-summary) (load "rmailsum"))
258 (hypb:function-overload 'rmail-new-summary nil
259 '(if (fboundp 'hproperty:but-create)
260 (hproperty:but-create)))
261
262 ;;; ************************************************************************
263 ;;; Private variables
264 ;;; ************************************************************************
265
266 (provide 'hrmail)