1 ;;; wl-message.el --- Message displaying modules for Wanderlust.
3 ;; Copyright (C) 1998,1999,2000 Yuuichi Teranishi <teranisi@gohome.org>
5 ;; Author: Yuuichi Teranishi <teranisi@gohome.org>
6 ;; Keywords: mail, net news
8 ;; This file is part of Wanderlust (Yet Another Message Interface on Emacsen).
10 ;; This program is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
15 ;; This program is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 ;; Boston, MA 02111-1307, USA.
33 (require 'wl-highlight)
41 (defalias-maybe 'event-window 'ignore)
42 (defalias-maybe 'posn-window 'ignore)
43 (defalias-maybe 'event-start 'ignore)
44 (defalias-maybe 'mime-open-entity 'ignore)
45 (defalias-maybe 'itimer-function 'ignore)
46 (defalias-maybe 'delete-itimer 'ignore)
47 (defvar-maybe itimer-list))
49 (defvar wl-message-buffer-prefetch-get-next-function
50 'wl-summary-default-get-next-msg)
52 (defvar wl-message-buffer-prefetch-debug nil)
53 (defvar wl-message-buffer-prefetch-timer nil)
55 (defvar wl-message-buffer nil) ; message buffer.
57 (defvar wl-message-buffer-cur-summary-buffer nil)
58 (defvar wl-message-buffer-cur-folder nil)
59 (defvar wl-message-buffer-cur-number nil)
60 (defvar wl-message-buffer-cur-flag nil)
61 (defvar wl-message-buffer-cur-summary-buffer nil)
62 (defvar wl-message-buffer-original-buffer nil) ; original buffer.
63 (defvar wl-message-buffer-all-header-flag nil)
64 (defvar wl-message-buffer-mode-line-formatter nil)
66 (make-variable-buffer-local 'wl-message-buffer-cur-folder)
67 (make-variable-buffer-local 'wl-message-buffer-cur-number)
68 (make-variable-buffer-local 'wl-message-buffer-cur-flag)
69 (make-variable-buffer-local 'wl-message-buffer-cur-summary-buffer)
70 (make-variable-buffer-local 'wl-message-buffer-original-buffer)
71 (make-variable-buffer-local 'wl-message-buffer-all-header-flag)
72 (make-variable-buffer-local 'wl-message-buffer-mode-line-formatter)
74 (defvar wl-fixed-window-configuration nil)
76 (defvar wl-message-buffer-cache-size 10) ; At least 1.
78 ;;; Message buffer cache.
80 (defvar wl-message-buffer-cache nil
81 "Message cache. (old ... new) order alist.
82 With association ((\"folder\" message \"message-id\") . cache-buffer).")
84 (defmacro wl-message-buffer-cache-buffer-get (entry)
87 (defmacro wl-message-buffer-cache-folder-get (entry)
88 (` (car (car (, entry)))))
90 (defmacro wl-message-buffer-cache-message-get (entry)
91 (` (cdr (car (, entry)))))
93 (defmacro wl-message-buffer-cache-entry-make (key buf)
94 (` (cons (, key) (, buf))))
96 (defmacro wl-message-buffer-cache-hit (key)
97 "Return value assosiated with key."
98 (` (wl-message-buffer-cache-buffer-get
99 (assoc (, key) wl-message-buffer-cache))))
101 (defun wl-message-buffer-cache-sort (entry)
102 "Move ENTRY to the top of `wl-message-buffer-cache'."
103 (setq wl-message-buffer-cache
104 (cons entry (delete entry wl-message-buffer-cache))))
105 ; (let* ((pointer (cons nil wl-message-buffer-cache))
107 ; (while (cdr pointer)
108 ; (if (equal (car (cdr pointer)) entry)
109 ; (setcdr pointer (cdr (cdr pointer)))
110 ; (setq pointer (cdr pointer))))
111 ; (setcdr pointer (list entry))
112 ; (setq wl-message-buffer-cache (cdr top))))
114 (defconst wl-original-message-buffer-name " *Original*")
116 (defun wl-original-message-mode ()
117 "A major mode for original message buffer."
118 (setq major-mode 'wl-original-message-mode)
119 (setq buffer-read-only t)
120 (elmo-set-buffer-multibyte nil)
121 (setq mode-name "Wanderlust original message"))
123 (defun wl-original-message-buffer-get (name)
124 "Get original message buffer for NAME.
125 If original message buffer already exists, it is re-used."
126 (let* ((name (concat wl-original-message-buffer-name name))
127 (buffer (get-buffer name)))
128 (unless (and buffer (buffer-live-p buffer))
129 (with-current-buffer (setq buffer (get-buffer-create name))
130 (wl-original-message-mode)))
133 (defun wl-message-buffer-create ()
134 "Create a new message buffer."
135 (let* ((buffer (generate-new-buffer wl-message-buffer-name))
136 (name (buffer-name buffer)))
137 (with-current-buffer buffer
138 (setq wl-message-buffer-original-buffer
139 (wl-original-message-buffer-get name))
140 (when wl-message-use-header-narrowing
141 (wl-message-header-narrowing-setup))
142 (run-hooks 'wl-message-buffer-created-hook))
145 (defun wl-message-buffer-cache-add (key)
146 "Add (KEY . buf) to the top of `wl-message-buffer-cache'.
147 Return its cache buffer."
148 (let ((len (length wl-message-buffer-cache))
150 (if (< len wl-message-buffer-cache-size)
151 (setq buf (wl-message-buffer-create))
152 (let ((entry (nth (1- len) wl-message-buffer-cache)))
154 (setq buf (wl-message-buffer-cache-buffer-get entry)))
155 (setcdr (nthcdr (- len 2) wl-message-buffer-cache) nil)
156 (setq wl-message-buffer-cache (delq entry wl-message-buffer-cache))
157 (setq buf (wl-message-buffer-create)))))
158 (setq wl-message-buffer-cache
159 (cons (wl-message-buffer-cache-entry-make key buf)
160 wl-message-buffer-cache))
163 (defun wl-message-buffer-cache-delete (&optional key)
164 "Delete the most recent cache entry"
166 (setq wl-message-buffer-cache
167 (delq (assoc key wl-message-buffer-cache)
168 wl-message-buffer-cache))
169 (let ((buf (wl-message-buffer-cache-buffer-get
170 (car wl-message-buffer-cache))))
171 (setq wl-message-buffer-cache
172 (nconc (cdr wl-message-buffer-cache)
173 (list (wl-message-buffer-cache-entry-make nil buf)))))))
175 (defun wl-message-buffer-cache-clean-up ()
176 "A function to flush all decoded messages in cache list."
178 (if (and (eq major-mode 'wl-summary-mode)
180 (get-buffer-window wl-message-buffer))
181 (delete-window (get-buffer-window wl-message-buffer)))
182 (wl-kill-buffers (regexp-quote wl-message-buffer-name))
183 (setq wl-message-buffer-cache nil))
185 ;;; Message buffer handling from summary buffer.
187 (defun wl-message-buffer-window ()
188 "Get message buffer window if any."
189 (let* ((start-win (selected-window))
193 (setq cur-win (next-window cur-win))
194 (with-current-buffer (window-buffer cur-win)
195 (if (or (eq major-mode 'wl-message-mode)
196 (eq major-mode 'mime-view-mode))
197 (throw 'found cur-win)))
198 (not (eq cur-win start-win)))))))
200 (defun wl-message-select-buffer (buffer)
201 "Select BUFFER as a message buffer."
202 (let ((window (get-buffer-window buffer))
203 (sum (car wl-message-window-size))
204 (mes (cdr wl-message-window-size))
207 (not (eq (save-excursion (set-buffer (window-buffer window))
208 wl-message-buffer-cur-summary-buffer)
210 (delete-window window)
211 (run-hooks 'wl-message-window-deleted-hook)
214 (select-window window)
215 (when wl-fixed-window-configuration
216 (delete-other-windows)
217 (and wl-stay-folder-window
218 (wl-summary-toggle-disp-folder)))
219 ;; There's no buffer window. Search for message window and snatch it.
220 (if (setq window (wl-message-buffer-window))
221 (select-window window)
222 (setq whi (1- (window-height)))
225 (let ((total (+ sum mes)))
226 (setq sum (max window-min-height (/ (* whi sum) total)))
227 (setq mes (max window-min-height (/ (* whi mes) total))))
228 (if (< whi (+ sum mes))
229 (enlarge-window (- (+ sum mes) whi)))))
230 (split-window (get-buffer-window (current-buffer)) sum)
232 (switch-to-buffer buffer)))
234 (defun wl-message-narrow-to-page (&optional arg)
236 If ARG is specified, narrow to ARGth page."
238 (setq arg (if arg (prefix-numeric-value arg) 0))
241 (forward-page -1) ; Beginning of current page.
243 (goto-char (point-min))))
244 (forward-char 1) ; for compatibility with emacs-19.28 and emacs-19.29
247 ((> arg 0) (forward-page arg))
248 ((< arg 0) (forward-page (1- arg))))
251 (narrow-to-region (point)
254 (if (and (eolp) (not (bobp)))
258 (defun wl-message-prev-page (&optional lines)
259 "Scroll down current message by LINES.
260 Returns non-nil if top of message."
262 (let (cur-buf top real-top)
263 (unless (eq major-mode 'mime-view-mode)
264 (when (buffer-live-p wl-message-buffer)
265 (setq cur-buf (current-buffer))
266 (wl-message-select-buffer wl-message-buffer)))
267 (move-to-window-line 0)
268 (if (and wl-break-pages
270 (not (setq real-top (save-restriction (widen) (bobp)))))
272 (wl-message-narrow-to-page -1)
273 (goto-char (point-max))
277 (scroll-down (or lines wl-message-scroll-amount))
281 (let ((f (assq (mime-preview-original-major-mode)
282 mime-preview-over-to-previous-method-alist)))
283 (if f (funcall (cdr f))))
285 (select-window (get-buffer-window cur-buf))))
288 (defun wl-message-next-page (&optional lines)
289 "Scroll up current message by LINES.
290 Returns non-nil if bottom of message."
292 (let (cur-buf bottom)
293 (unless (eq major-mode 'mime-view-mode)
294 (when (buffer-live-p wl-message-buffer)
295 (setq cur-buf (current-buffer))
296 (wl-message-select-buffer wl-message-buffer)))
297 (move-to-window-line -1)
300 (and (pos-visible-in-window-p)
302 (if (or (null wl-break-pages)
305 (widen) (forward-line) (eobp))))
307 (wl-message-narrow-to-page 1)
310 (static-if (boundp 'window-pixel-scroll-increment)
311 ;; XEmacs 21.2.20 and later.
312 (let (window-pixel-scroll-increment)
313 (scroll-up (or lines wl-message-scroll-amount)))
314 (scroll-up (or lines wl-message-scroll-amount)))
316 (goto-char (point-max))))
319 (let ((f (assq (mime-preview-original-major-mode)
320 mime-preview-over-to-next-method-alist)))
321 (if f (funcall (cdr f))))
323 (select-window (get-buffer-window cur-buf))))
327 (defun wl-message-follow-current-entity (buffer)
328 "Follow to current message."
329 (wl-draft-reply (wl-message-get-original-buffer)
330 nil wl-message-buffer-cur-summary-buffer) ; reply to all
331 (let ((mail-reply-buffer buffer))
332 (wl-draft-yank-from-mail-reply-buffer nil)))
336 (defun wl-message-mode ()
337 "A major mode for message displaying."
339 (setq major-mode 'wl-message-mode)
340 (setq buffer-read-only t)
341 (setq mode-name "Message"))
343 (defun wl-message-exit ()
344 "Move to summary buffer."
346 (let (summary-buf summary-win)
347 (if (setq summary-buf wl-message-buffer-cur-summary-buffer)
348 (if (setq summary-win (get-buffer-window summary-buf))
349 (select-window summary-win)
350 (switch-to-buffer summary-buf)
351 (wl-message-select-buffer wl-message-buffer)
352 (select-window (get-buffer-window summary-buf))))
353 (run-hooks 'wl-message-exit-hook)))
355 (defun wl-message-toggle-disp-summary ()
357 (let ((summary-buf (get-buffer wl-message-buffer-cur-summary-buffer))
360 (buffer-live-p summary-buf))
361 (if (setq summary-win (get-buffer-window summary-buf))
362 (delete-window summary-win)
363 (switch-to-buffer summary-buf)
364 (wl-message-select-buffer wl-message-buffer))
365 (wl-summary-goto-folder-subr wl-message-buffer-cur-folder 'no-sync
368 (let ((sum-buf (current-buffer)))
369 (wl-message-select-buffer wl-message-buffer)
370 (setq wl-message-buffer-cur-summary-buffer sum-buf)))))
372 (defun wl-message-get-original-buffer ()
373 "Get original buffer for current message buffer."
374 (if (buffer-live-p wl-message-buffer-original-buffer)
375 wl-message-buffer-original-buffer
376 (wl-original-message-buffer-get (buffer-name (current-buffer)))))
378 (defun wl-message-add-buttons-to-body (start end)
381 (narrow-to-region start end)
382 (let ((case-fold-search t)
383 (alist wl-message-body-button-alist)
386 (setq entry (car alist)
388 (goto-char (point-min))
389 (while (re-search-forward (car entry) (+ (point) (nth 4 entry)) t)
390 (unless (get-text-property (point) 'keymap)
391 (wl-message-add-button
392 (match-beginning (nth 1 entry))
393 (match-end (nth 1 entry))
395 (match-string (nth 3 entry))))))))))
397 (defun wl-message-add-buttons-to-header (start end)
400 (narrow-to-region start end)
401 (let ((case-fold-search t)
402 (alist wl-message-header-button-alist)
405 (setq entry (car alist)
407 (goto-char (point-min))
408 (while (re-search-forward (car entry) nil t)
409 (setq start (match-beginning 0)
410 end (if (re-search-forward "^[^ \t]" nil t)
414 (while (re-search-forward (nth 1 entry) end t)
415 (wl-message-add-button
416 (match-beginning (nth 2 entry))
417 (match-end (nth 2 entry))
418 (nth 3 entry) (match-string (nth 4 entry))))
419 (goto-char end)))))))
421 (defun wl-message-redisplay (folder number flag &optional force-reload)
422 (let* ((default-mime-charset wl-mime-charset)
423 (buffer-read-only nil)
424 (summary-buf (current-buffer))
429 (setq buffer-read-only nil)
430 (setq cache-used (wl-message-buffer-display
431 folder number flag force-reload))
432 (setq wl-message-buffer (car cache-used))
433 (setq message-buf wl-message-buffer)
434 (wl-message-select-buffer wl-message-buffer)
436 (set-buffer message-buf)
437 (make-local-variable 'truncate-partial-width-windows)
438 (setq truncate-partial-width-windows nil)
439 (setq truncate-lines wl-message-truncate-lines)
440 (setq buffer-read-only nil)
441 (setq wl-message-buffer-cur-summary-buffer summary-buf)
442 (setq wl-message-buffer-cur-folder (elmo-folder-name-internal folder))
443 (setq wl-message-buffer-cur-number number)
444 (wl-line-formatter-setup
445 wl-message-buffer-mode-line-formatter
446 wl-message-mode-line-format
447 wl-message-mode-line-format-spec-alist)
448 (setq mode-line-buffer-identification
449 (funcall wl-message-buffer-mode-line-formatter))
451 ; (when wl-highlight-body-too
452 ; (wl-highlight-body))
453 (ignore-errors (wl-message-narrow-to-page))
454 (setq cache-used (cdr cache-used))
455 (goto-char (point-min))
456 (when (re-search-forward "^$" nil t)
457 (wl-message-add-buttons-to-header (point-min) (point))
458 (wl-message-add-buttons-to-body (point) (point-max)))
459 (when wl-message-use-header-narrowing
460 (wl-message-header-narrowing))
461 (goto-char (point-min))
462 (ignore-errors (run-hooks 'wl-message-redisplay-hook))
463 ;; go back to summary mode
464 (set-buffer-modified-p nil)
465 (setq buffer-read-only t)
466 (set-buffer summary-buf)
467 (setq summary-win (get-buffer-window summary-buf))
468 (if (window-live-p summary-win)
469 (select-window summary-win))
472 ;; Use message buffer cache.
473 (defun wl-message-buffer-display (folder number flag
474 &optional force-reload unread)
475 (let* ((msg-id (ignore-errors (elmo-message-field folder number
477 (fname (elmo-folder-name-internal folder))
478 (hit (wl-message-buffer-cache-hit (list fname number msg-id)))
481 (when (and hit (not (buffer-live-p hit)))
482 (wl-message-buffer-cache-delete (list fname number msg-id))
486 ;; move hit to the top.
487 (wl-message-buffer-cache-sort
488 (wl-message-buffer-cache-entry-make (list fname number msg-id) hit))
489 ;; buffer cache is used.
491 (with-current-buffer hit
492 ;; Rewind to the top page
494 (goto-char (point-min))
495 (ignore-errors (wl-message-narrow-to-page))
496 (unless (eq wl-message-buffer-cur-flag flag)
498 ;; delete tail and add new to the top.
499 (setq hit (wl-message-buffer-cache-add (list fname number msg-id)))
501 (if (or force-reload read)
507 (wl-message-display-internal folder number flag
508 force-reload unread))
509 (setq wl-message-buffer-cur-flag flag))
511 (wl-message-buffer-cache-delete)
512 (error "Display message %s/%s is quitted" fname number))
514 (wl-message-buffer-cache-delete)
515 (signal (car err) (cdr err))
516 nil))) ;; will not be used
517 (cons hit cache-used)))
519 (defun wl-message-display-internal (folder number flag
520 &optional force-reload unread)
521 (let ((default-mime-charset wl-mime-charset)
522 (elmo-mime-charset wl-mime-charset))
523 (setq wl-message-buffer-all-header-flag (eq flag 'all-header))
526 (let (wl-highlight-x-face-function)
527 (prog1 (elmo-mime-display-as-is folder number
529 (wl-message-get-original-buffer)
530 'wl-original-message-mode
533 (wl-message-define-keymap))
534 (let (buffer-read-only)
535 (wl-highlight-message (point-min) (point-max) t))))
536 (elmo-mime-message-display folder number
538 (wl-message-get-original-buffer)
539 'wl-original-message-mode
542 (wl-message-define-keymap)))
543 (run-hooks 'wl-message-display-internal-hook)
544 (setq buffer-read-only t))))
546 (defsubst wl-message-buffer-prefetch-p (folder &optional number)
547 (and (or (not number)
548 (elmo-message-file-p folder number)
549 (let ((size (elmo-message-field folder number 'size)))
550 (not (and (integerp size)
551 wl-message-buffer-prefetch-threshold
552 (>= size wl-message-buffer-prefetch-threshold)))))
554 (elmo-folder-plugged-p folder)
555 (elmo-file-cache-exists-p
556 (elmo-message-field folder number 'message-id)))
558 ((eq wl-message-buffer-prefetch-folder-type-list t)
560 ((and number wl-message-buffer-prefetch-folder-type-list)
561 (memq (elmo-folder-type-internal
562 (elmo-message-folder folder number))
563 wl-message-buffer-prefetch-folder-type-list))
564 (wl-message-buffer-prefetch-folder-type-list
565 (let ((list wl-message-buffer-prefetch-folder-type-list)
568 (while (setq type (pop list))
569 (if (elmo-folder-contains-type folder type)
570 (throw 'done t)))))))
572 ((consp wl-message-buffer-prefetch-folder-list)
573 (wl-string-match-member (elmo-folder-name-internal folder)
574 wl-message-buffer-prefetch-folder-list))
575 (t wl-message-buffer-prefetch-folder-list)))))
577 (defsubst wl-message-buffer-prefetch-clear-timer ()
578 ;;; cannot use for the bug of fsf-compat package (1.09).
579 ;;; (cancel-function-timers 'wl-message-buffer-prefetch-subr)
580 (if (fboundp 'run-with-idle-timer)
581 (if (featurep 'xemacs)
582 (let ((p itimer-list))
584 (if (eq 'wl-message-buffer-prefetch-subr
585 (itimer-function (car p)))
586 (delete-itimer (car p)))
588 ;; FSF Emacs is correct
589 (cancel-function-timers 'wl-message-buffer-prefetch-subr))))
591 (defsubst wl-message-buffer-prefetch-set-timer (folder number count
593 (if (not (fboundp 'run-with-idle-timer))
594 (when (sit-for wl-message-buffer-prefetch-idle-time)
595 (wl-message-buffer-prefetch-subr
596 folder number count summary charset))
598 wl-message-buffer-prefetch-idle-time
600 'wl-message-buffer-prefetch-subr
601 folder number count summary charset)))
603 (defvar wl-message-buffer-prefetch-move-spec-alist nil)
605 (defun wl-message-buffer-prefetch-get-next (folder number summary)
606 (if (buffer-live-p summary)
607 (with-current-buffer summary
608 (let ((wl-summary-move-spec-alist
609 (or wl-message-buffer-prefetch-move-spec-alist
610 wl-summary-move-spec-alist))
612 (while (and (setq next (funcall
613 wl-message-buffer-prefetch-get-next-function
615 (not (wl-message-buffer-prefetch-p folder next))))
618 (defun wl-message-buffer-prefetch (folder number count
619 &optional summary charset)
620 (let* ((summary (or summary (get-buffer wl-summary-buffer-name)))
623 (wl-message-buffer-prefetch-p folder))
624 (unless (wl-message-buffer-prefetch-p folder number)
626 (wl-message-buffer-prefetch-get-next folder number summary)))
628 (wl-message-buffer-prefetch-clear-timer)
629 (wl-message-buffer-prefetch-set-timer
630 folder num count summary charset)))))
632 (defun wl-message-buffer-prefetch-next (folder number count
633 &optional summary charset)
634 (let* ((summary (or summary (get-buffer wl-summary-buffer-name)))
637 (wl-message-buffer-prefetch-p folder))
638 (setq next (wl-message-buffer-prefetch-get-next folder number summary))
640 (wl-message-buffer-prefetch-clear-timer)
641 (wl-message-buffer-prefetch-set-timer
642 folder next count summary charset)))))
644 (defun wl-message-buffer-prefetch-subr (folder number count summary charset)
645 (if (buffer-live-p summary)
646 (with-current-buffer summary
649 (>= (setq count (- count 1)) 0)
650 (string= (elmo-folder-name-internal folder)
651 (wl-summary-buffer-folder-name)))
652 (let* ((wl-mime-charset charset)
653 (default-mime-charset charset)
654 (message-id (elmo-message-field folder number 'message-id))
655 (key (list (elmo-folder-name-internal folder)
657 (hit (wl-message-buffer-cache-hit key))
658 result time1 time2 sec micro)
659 (when wl-message-buffer-prefetch-debug
660 (message "%d: count %d, hit %s" number count (buffer-name hit)))
661 (if (and hit (buffer-live-p hit))
663 (wl-message-buffer-cache-sort
664 (wl-message-buffer-cache-entry-make key hit))
665 (wl-message-buffer-prefetch-subr
667 (wl-message-buffer-prefetch-get-next
668 folder number summary)
669 count summary charset))
671 (when wl-message-buffer-prefetch-debug
672 (setq time1 (current-time))
673 (message "Prefetching %d..." number))
674 (setq result (wl-message-buffer-display
675 folder number 'mime nil 'unread))
676 (when wl-message-buffer-prefetch-debug
677 (setq time2 (current-time))
678 (setq sec (- (nth 1 time2)(nth 1 time1)))
679 (setq micro (- (nth 2 time2)(nth 2 time1)))
680 (setq micro (+ micro (* 1000000 sec)))
681 (message "Prefetching %d...done(%f msec)."
686 (wl-message-buffer-prefetch-set-timer
688 (wl-message-buffer-prefetch-get-next
689 folder number summary)
690 count summary charset)
695 (when wl-message-buffer-prefetch-debug
696 (message "Buffer Cached Messages: %s"
699 (if (numberp (nth 1 (car cache)))
702 (elmo-folder-name-internal folder))
705 (format "*%d" (nth 1 (car cache))))
707 wl-message-buffer-cache " "))) )))
709 (defvar wl-message-button-map (make-sparse-keymap))
711 (defun wl-message-add-button (from to function &optional data)
712 "Create a button between FROM and TO with callback FUNCTION and DATA."
715 (nconc (list 'wl-message-button-callback function)
717 (list 'wl-message-button-data data))))
718 (let ((ov (make-overlay from to)))
719 (overlay-put ov 'mouse-face 'highlight)
720 (overlay-put ov 'local-map wl-message-button-map)
721 (overlay-put ov 'evaporate t)))
723 (defun wl-message-button-dispatcher (event)
724 "Select the button under point."
726 (mouse-set-point event)
727 (let ((callback (get-text-property (point) 'wl-message-button-callback))
728 (data (get-text-property (point) 'wl-message-button-data)))
730 (funcall callback data)
731 (wl-message-button-dispatcher-internal event))))
733 (defun wl-message-button-refer-article (data)
734 "Read article specified by Message-ID DATA at point."
735 (switch-to-buffer-other-window
736 wl-message-buffer-cur-summary-buffer)
737 (if (wl-summary-jump-to-msg-by-message-id data)
738 (wl-summary-redisplay)))
740 (defun wl-message-uu-substring (buf outbuf &optional first last)
743 (search-forward "\n\n")
745 ep filename case-fold-search)
749 (if (re-search-forward "^begin[ \t]+[0-9]+[ \t]+\\([^ ].*\\)" nil t)
750 (setq filename (buffer-substring (match-beginning 1)(match-end 1)))
752 (re-search-forward "^M.*$" nil t)) ; uuencoded string
755 (goto-char (point-max))
757 (re-search-backward "^end" sp t)
758 (re-search-backward "^M.*$" sp t)) ; uuencoded string
762 (goto-char (point-max))
763 (insert-buffer-substring buf sp ep)
767 ;;; Header narrowing courtesy of Hideyuki Shirai.
768 (defun wl-message-header-narrowing ()
770 (unless (eq this-command 'wl-summary-redisplay-all-header)
773 (goto-char (point-min))
774 (if (re-search-forward "^$" nil t)
776 (goto-char (point-max)))
777 (narrow-to-region (point-min) (point))
778 (let ((fields wl-message-header-narrowing-fields))
780 (wl-message-header-narrowing-1 (concat "^" (car fields) ":"))
781 (setq fields (cdr fields))))))))
783 (defvar wl-message-header-narrowing-map (make-sparse-keymap))
784 (define-key wl-message-header-narrowing-map [mouse-2]
785 'wl-message-header-narrowing-again-at-mouse)
787 (defvar wl-message-header-narrowing-widen-map (make-sparse-keymap))
788 (define-key wl-message-header-narrowing-widen-map [mouse-2]
789 'wl-message-header-narrowing-widen-at-mouse)
791 (defun wl-message-header-narrowing-again-at-mouse (event)
793 (save-window-excursion
795 (mouse-set-point event)
796 (wl-message-header-narrowing))))
798 (defun wl-message-header-narrowing-1 (hregexp)
799 (let ((case-fold-search t)
801 (goto-char (point-min))
802 (while (re-search-forward hregexp nil t)
803 (setq start (match-beginning 0))
805 (setq end (progn (while (looking-at "^[ \t]") (forward-line))
807 (line-end-position)))
808 (if (<= (count-lines start end) wl-message-header-narrowing-lines)
811 (forward-line (1- wl-message-header-narrowing-lines))
814 (unless (eq (get-char-property start 'invisible)
815 'wl-message-header-narrowing)
817 (let ((ovs (overlays-at start))
819 (while (and ovs (not (overlayp ov)))
820 (if (overlay-get (car ovs)
821 'wl-message-header-narrowing)
823 (setq ovs (cdr ovs)))
825 (make-overlay start end)))
826 (overlay-put ov 'wl-message-header-narrowing t)
827 (overlay-put ov 'evaporate t)
828 (overlay-put ov 'invisible 'wl-message-header-narrowing)
829 (overlay-put ov 'after-string
830 wl-message-header-narrowing-string))))))
832 (defun wl-message-header-narrowing-widen-at-mouse (event)
834 (save-selected-window
835 (select-window (posn-window (event-start event)))
836 (let* ((win (selected-window))
837 (wpos (window-start win))
838 (pos (posn-point (event-start event)))
839 (ovs (overlays-in (1- pos) (1+ pos))) ;; Uum...
841 (while (and ovs (not (overlayp ov)))
842 (when (overlay-get (car ovs) 'wl-message-header-narrowing)
844 (setq ovs (cdr ovs)))
846 (overlay-put ov 'face 'wl-message-header-narrowing-face)
847 (overlay-put ov 'local-map wl-message-header-narrowing-map)
848 (overlay-put ov 'invisible nil)
849 (overlay-put ov 'after-string nil))
850 (set-window-start win wpos))))
852 (defun wl-message-header-narrowing-setup ()
853 (when (boundp 'line-move-ignore-invisible)
854 (set (make-local-variable 'line-move-ignore-invisible) t))
855 (set-text-properties 0 (length wl-message-header-narrowing-string)
857 wl-message-header-narrowing-face
859 ,wl-message-header-narrowing-widen-map)
860 wl-message-header-narrowing-string))
862 (defun wl-message-header-narrowing-toggle ()
863 "Toggle header narrowing."
865 (when wl-message-use-header-narrowing
867 (goto-char (point-min))
868 (if (re-search-forward "^$" nil t)
870 (goto-char (point-max)))
871 (let ((ovs (overlays-in (point-min) (point)))
873 (while (setq ov (car ovs))
874 (when (overlay-get ov 'wl-message-header-narrowing)
875 (setq hn-ovs (cons ov hn-ovs)))
876 (setq ovs (cdr ovs)))
879 (delete-overlay (car hn-ovs))
880 (setq hn-ovs (cdr hn-ovs)))
881 (wl-message-header-narrowing))))))
884 (product-provide (provide 'wl-message) (require 'wl-version))
886 ;;; wl-message.el ends here