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-folder nil)
58 (defvar wl-message-buffer-cur-number nil)
59 (defvar wl-message-buffer-cur-display-type nil)
60 (defvar wl-message-buffer-cur-summary-buffer nil)
61 (defvar wl-message-buffer-require-all-header nil)
62 (defvar wl-message-buffer-original-buffer nil) ; original buffer.
63 (defvar wl-message-buffer-mode-line-formatter nil)
64 (defvar wl-message-buffer-flag-indicator nil)
65 (defvar wl-message-buffer-mime-entity nil)
67 (make-variable-buffer-local 'wl-message-buffer-cur-folder)
68 (make-variable-buffer-local 'wl-message-buffer-cur-number)
69 (make-variable-buffer-local 'wl-message-buffer-cur-display-type)
70 (make-variable-buffer-local 'wl-message-buffer-cur-summary-buffer)
71 (make-variable-buffer-local 'wl-message-buffer-require-all-header)
72 (make-variable-buffer-local 'wl-message-buffer-original-buffer)
73 (make-variable-buffer-local 'wl-message-buffer-mode-line-formatter)
74 (make-variable-buffer-local 'wl-message-buffer-flag-indicator)
75 (make-variable-buffer-local 'wl-message-buffer-mime-entity)
77 (defvar wl-fixed-window-configuration nil)
79 (defvar wl-message-buffer-cache-size 10) ; At least 1.
81 ;;; Message buffer cache.
83 (defvar wl-message-buffer-cache nil
84 "Message cache. (old ... new) order alist.
85 With association ((\"folder\" message \"message-id\") . cache-buffer).")
87 (defmacro wl-message-buffer-cache-buffer-get (entry)
90 (defmacro wl-message-buffer-cache-folder-get (entry)
91 (` (car (car (, entry)))))
93 (defmacro wl-message-buffer-cache-message-get (entry)
94 (` (cdr (car (, entry)))))
96 (defmacro wl-message-buffer-cache-entry-make (key buf)
97 (` (cons (, key) (, buf))))
99 (defmacro wl-message-buffer-cache-hit (key)
100 "Return value assosiated with key."
101 (` (wl-message-buffer-cache-buffer-get
102 (assoc (, key) wl-message-buffer-cache))))
104 (defun wl-message-buffer-cache-sort (entry)
105 "Move ENTRY to the top of `wl-message-buffer-cache'."
106 (setq wl-message-buffer-cache
107 (cons entry (delete entry wl-message-buffer-cache))))
108 ; (let* ((pointer (cons nil wl-message-buffer-cache))
110 ; (while (cdr pointer)
111 ; (if (equal (car (cdr pointer)) entry)
112 ; (setcdr pointer (cdr (cdr pointer)))
113 ; (setq pointer (cdr pointer))))
114 ; (setcdr pointer (list entry))
115 ; (setq wl-message-buffer-cache (cdr top))))
117 (defconst wl-original-message-buffer-name " *Original*")
119 (defun wl-original-message-mode ()
120 "A major mode for original message buffer."
121 (setq major-mode 'wl-original-message-mode)
122 (setq buffer-read-only t)
123 (set-buffer-multibyte nil)
124 (setq mode-name "Wanderlust original message"))
126 (defun wl-original-message-buffer-get (name)
127 "Get original message buffer for NAME.
128 If original message buffer already exists, it is re-used."
129 (let* ((name (concat wl-original-message-buffer-name name))
130 (buffer (get-buffer name)))
131 (unless (and buffer (buffer-live-p buffer))
132 (with-current-buffer (setq buffer (get-buffer-create name))
133 (wl-original-message-mode)))
136 (defun wl-message-buffer-create ()
137 "Create a new message buffer."
138 (let* ((buffer (generate-new-buffer wl-message-buffer-name))
139 (name (buffer-name buffer)))
140 (with-current-buffer buffer
141 (setq wl-message-buffer-original-buffer
142 (wl-original-message-buffer-get name))
143 (when wl-message-use-header-narrowing
144 (wl-message-header-narrowing-setup))
145 (run-hooks 'wl-message-buffer-created-hook))
148 (defun wl-message-buffer-cache-add (key)
149 "Add (KEY . buf) to the top of `wl-message-buffer-cache'.
150 Return its cache buffer."
151 (let ((len (length wl-message-buffer-cache))
153 (if (< len wl-message-buffer-cache-size)
154 (setq buf (wl-message-buffer-create))
155 (let ((entry (nth (1- len) wl-message-buffer-cache)))
157 (setq buf (wl-message-buffer-cache-buffer-get entry)))
158 (setcdr (nthcdr (- len 2) wl-message-buffer-cache) nil)
159 (setq wl-message-buffer-cache (delq entry wl-message-buffer-cache))
160 (setq buf (wl-message-buffer-create)))))
161 (setq wl-message-buffer-cache
162 (cons (wl-message-buffer-cache-entry-make key buf)
163 wl-message-buffer-cache))
166 (defun wl-message-buffer-cache-delete (&optional key)
167 "Delete the most recent cache entry"
169 (setq wl-message-buffer-cache
170 (delq (assoc key wl-message-buffer-cache)
171 wl-message-buffer-cache))
172 (let ((buf (wl-message-buffer-cache-buffer-get
173 (car wl-message-buffer-cache))))
174 (setq wl-message-buffer-cache
175 (nconc (cdr wl-message-buffer-cache)
176 (list (wl-message-buffer-cache-entry-make nil buf)))))))
178 (defun wl-message-buffer-cache-clean-up ()
179 "A function to flush all decoded messages in cache list."
181 (if (and (eq major-mode 'wl-summary-mode)
183 (get-buffer-window wl-message-buffer))
184 (delete-window (get-buffer-window wl-message-buffer)))
185 (wl-kill-buffers (regexp-quote wl-message-buffer-name))
186 (setq wl-message-buffer-cache nil))
188 ;;; Message buffer handling from summary buffer.
190 (defun wl-message-buffer-window ()
191 "Get message buffer window if any."
192 (let* ((start-win (selected-window))
196 (setq cur-win (next-window cur-win))
197 (with-current-buffer (window-buffer cur-win)
198 (if (or (eq major-mode 'wl-message-mode)
199 (eq major-mode 'mime-view-mode))
200 (throw 'found cur-win)))
201 (not (eq cur-win start-win)))))))
203 (defun wl-message-select-buffer (buffer)
204 "Select BUFFER as a message buffer."
205 (let ((window (get-buffer-window buffer))
206 (sum (car wl-message-window-size))
207 (mes (cdr wl-message-window-size))
210 (not (eq (save-excursion (set-buffer (window-buffer window))
211 wl-message-buffer-cur-summary-buffer)
213 (delete-window window)
214 (run-hooks 'wl-message-window-deleted-hook)
217 (select-window window)
218 (when wl-fixed-window-configuration
219 (delete-other-windows)
220 (and wl-stay-folder-window
221 (wl-summary-toggle-disp-folder)))
222 ;; There's no buffer window. Search for message window and snatch it.
223 (if (setq window (wl-message-buffer-window))
224 (select-window window)
225 (setq whi (1- (window-height)))
228 (let ((total (+ sum mes)))
229 (setq sum (max window-min-height (/ (* whi sum) total)))
230 (setq mes (max window-min-height (/ (* whi mes) total))))
231 (if (< whi (+ sum mes))
232 (enlarge-window (- (+ sum mes) whi)))))
233 (split-window (get-buffer-window (current-buffer)) sum)
235 (switch-to-buffer buffer)))
237 (defun wl-message-narrow-to-page (&optional arg)
239 If ARG is specified, narrow to ARGth page."
241 (setq arg (if arg (prefix-numeric-value arg) 0))
244 (forward-page -1) ; Beginning of current page.
246 (goto-char (point-min))))
247 (forward-char 1) ; for compatibility with emacs-19.28 and emacs-19.29
250 ((> arg 0) (forward-page arg))
251 ((< arg 0) (forward-page (1- arg))))
254 (narrow-to-region (point)
257 (if (and (eolp) (not (bobp)))
261 (defun wl-message-prev-page (&optional lines)
262 "Scroll down current message by LINES.
263 Returns non-nil if top of message."
266 (save-selected-window
267 (unless (eq major-mode 'mime-view-mode)
268 (when (buffer-live-p wl-message-buffer)
269 (wl-message-select-buffer wl-message-buffer)))
270 (move-to-window-line 0)
271 (if (and wl-break-pages
273 (not (setq real-top (save-restriction (widen) (bobp)))))
275 (wl-message-narrow-to-page -1)
276 (goto-char (point-max))
280 (scroll-down (or lines wl-message-scroll-amount))
284 (let ((f (assq (mime-preview-original-major-mode)
285 mime-preview-over-to-previous-method-alist)))
286 (if f (funcall (cdr f))))))
289 (defun wl-message-next-page (&optional lines)
290 "Scroll up current message by LINES.
291 Returns non-nil if bottom of message."
294 (save-selected-window
295 (unless (eq major-mode 'mime-view-mode)
296 (when (buffer-live-p wl-message-buffer)
297 (wl-message-select-buffer wl-message-buffer)))
298 (move-to-window-line -1)
301 (and (pos-visible-in-window-p)
303 (if (or (null wl-break-pages)
306 (widen) (forward-line) (eobp))))
308 (wl-message-narrow-to-page 1)
311 (static-if (boundp 'window-pixel-scroll-increment)
312 ;; XEmacs 21.2.20 and later.
313 (let (window-pixel-scroll-increment)
314 (scroll-up (or lines wl-message-scroll-amount)))
315 (scroll-up (or lines wl-message-scroll-amount)))
317 (goto-char (point-max))))
320 (let ((f (assq (mime-preview-original-major-mode)
321 mime-preview-over-to-next-method-alist)))
322 (if f (funcall (cdr f))))))
326 (defun wl-message-follow-current-entity (buffer)
327 "Follow to current message."
328 (wl-draft-reply (wl-message-get-original-buffer)
329 nil wl-message-buffer-cur-summary-buffer) ; reply to all
330 (let ((mail-reply-buffer buffer))
331 (wl-draft-yank-from-mail-reply-buffer nil)))
335 (defun wl-message-mode ()
336 "A major mode for message displaying."
338 (setq major-mode 'wl-message-mode)
339 (setq buffer-read-only t)
340 (setq mode-name "Message"))
342 (defun wl-message-exit ()
343 "Move to summary buffer or mother buffer."
345 (let (summary-buf summary-win mother-buffer)
346 (cond ((setq summary-buf wl-message-buffer-cur-summary-buffer)
347 (if (setq summary-win (get-buffer-window summary-buf))
348 (select-window summary-win)
349 (switch-to-buffer summary-buf)
350 (wl-message-select-buffer wl-message-buffer)
351 (select-window (get-buffer-window summary-buf))))
352 ((setq mother-buffer mime-mother-buffer)
353 (kill-buffer (current-buffer))
354 (switch-to-buffer mother-buffer)))
355 (run-hooks 'wl-message-exit-hook)))
357 (defun wl-message-toggle-disp-summary ()
359 (let ((summary-buf (get-buffer wl-message-buffer-cur-summary-buffer))
362 (buffer-live-p summary-buf))
363 (if (setq summary-win (get-buffer-window summary-buf))
364 (delete-window summary-win)
365 (switch-to-buffer summary-buf)
366 (wl-message-select-buffer wl-message-buffer))
367 (wl-summary-goto-folder-subr wl-message-buffer-cur-folder 'no-sync
370 (let ((sum-buf (current-buffer)))
371 (wl-message-select-buffer wl-message-buffer)
372 (setq wl-message-buffer-cur-summary-buffer sum-buf)))))
374 (defun wl-message-get-original-buffer ()
375 "Get original buffer for current message buffer."
376 (if (buffer-live-p wl-message-buffer-original-buffer)
377 wl-message-buffer-original-buffer
378 (wl-original-message-buffer-get (buffer-name (current-buffer)))))
380 (defun wl-message-add-buttons-to-body (start end)
383 (narrow-to-region start end)
384 (let ((case-fold-search t)
385 (alist wl-message-body-button-alist)
388 (setq entry (car alist)
390 (goto-char (point-min))
391 (while (re-search-forward (car entry) (+ (point) (nth 4 entry)) t)
392 (unless (get-text-property (point) 'keymap)
393 (wl-message-add-button
394 (match-beginning (nth 1 entry))
395 (match-end (nth 1 entry))
397 (match-string (nth 3 entry))))))))))
399 (defun wl-message-add-buttons-to-header (start end)
402 (narrow-to-region start end)
403 (let ((case-fold-search t)
404 (alist wl-message-header-button-alist)
407 (setq entry (car alist)
409 (goto-char (point-min))
410 (while (re-search-forward (car entry) nil t)
411 (setq start (match-beginning 0)
412 end (if (re-search-forward "^[^ \t]" nil t)
416 (while (re-search-forward (nth 1 entry) end t)
417 (wl-message-add-button
418 (match-beginning (nth 2 entry))
419 (match-end (nth 2 entry))
420 (nth 3 entry) (match-string (nth 4 entry))))
421 (goto-char end)))))))
423 ;; display-type object definition.
424 (defun wl-message-make-display-type (mime header)
427 (setq symbol (intern (format "%s-%s-header" mime header)))
429 'wl-message-display-type
430 (list :mime mime :header header)))))
432 (defun wl-message-display-type-property (display-type prop)
433 (plist-get (get display-type 'wl-message-display-type) prop))
435 (defun wl-message-mime-analysis-p (display-type &optional header-or-body)
436 (let ((mode (wl-message-display-type-property display-type :mime)))
439 (memq mode '(mime header-only)))
443 (defun wl-message-display-all-header-p (display-type)
444 (eq (wl-message-display-type-property display-type :header) 'all))
446 (defun wl-message-buffer-display-type (&optional message-buffer)
448 (with-current-buffer message-buffer
449 wl-message-buffer-cur-display-type)
450 wl-message-buffer-cur-display-type))
452 (defun wl-message-redisplay (folder number display-type &optional force-reload)
453 (let* ((default-mime-charset wl-mime-charset)
454 (buffer-read-only nil)
455 (summary-buf (current-buffer))
456 message-buf entity summary-win flags)
457 (setq buffer-read-only nil)
458 (setq wl-message-buffer (wl-message-buffer-display
459 folder number display-type force-reload))
460 (setq message-buf wl-message-buffer)
461 (wl-message-select-buffer wl-message-buffer)
463 (set-buffer message-buf)
464 (wl-deactivate-region)
465 (make-local-variable 'truncate-partial-width-windows)
466 (setq truncate-partial-width-windows nil)
467 (setq truncate-lines wl-message-truncate-lines)
468 (setq buffer-read-only nil)
469 (setq wl-message-buffer-cur-summary-buffer summary-buf)
470 (setq wl-message-buffer-cur-folder (elmo-folder-name-internal folder))
471 (setq wl-message-buffer-cur-number number)
472 (setq wl-message-buffer-flag-indicator
473 (if (setq flags (elmo-get-global-flags (elmo-message-flags
475 (let ((fl wl-summary-flag-alist)
476 flag-strings flag-string face)
478 (when (memq (car (car fl)) flags)
479 (setq flag-string (capitalize
480 (symbol-name (car (car fl))))
481 flags (delq (car (car fl)) flags))
482 (when (facep (setq face
485 "wl-highlight-summary-%s-flag-face"
487 (put-text-property 0 (length flag-string)
488 'face face flag-string))
489 (setq flag-strings (nconc flag-strings
490 (list flag-string))))
494 (mapcar (lambda (flag)
495 (capitalize (symbol-name flag)))
497 (concat " (" (mapconcat 'identity flag-strings ", ") ")"))
499 (wl-line-formatter-setup
500 wl-message-buffer-mode-line-formatter
501 wl-message-mode-line-format
502 wl-message-mode-line-format-spec-alist)
503 (setq mode-line-buffer-identification
504 (funcall wl-message-buffer-mode-line-formatter))
506 ; (when wl-highlight-body-too
507 ; (wl-highlight-body))
508 (ignore-errors (wl-message-narrow-to-page))
509 (goto-char (point-min))
510 (when (re-search-forward "^$" nil t)
511 (wl-message-add-buttons-to-header (point-min) (point))
512 (wl-message-add-buttons-to-body (point) (point-max)))
513 (when (and wl-message-use-header-narrowing
514 (not (wl-message-display-all-header-p display-type)))
515 (wl-message-header-narrowing))
516 (goto-char (point-min))
517 (ignore-errors (run-hooks 'wl-message-redisplay-hook))
518 ;; go back to summary mode
519 (set-buffer-modified-p nil)
520 (setq buffer-read-only t)
521 (set-buffer summary-buf)
522 (setq summary-win (get-buffer-window summary-buf))
523 (if (window-live-p summary-win)
524 (select-window summary-win))))
526 ;; Use message buffer cache.
527 (defun wl-message-buffer-display (folder number display-type
528 &optional force-reload unread)
529 (let* ((msg-id (ignore-errors
530 (elmo-message-field folder number 'message-id)))
531 (fname (elmo-folder-name-internal folder))
532 (hit (wl-message-buffer-cache-hit (list fname number msg-id)))
535 (when (and hit (not (buffer-live-p hit)))
536 (wl-message-buffer-cache-delete (list fname number msg-id))
540 ;; move hit to the top.
541 (wl-message-buffer-cache-sort
542 (wl-message-buffer-cache-entry-make (list fname number msg-id) hit))
543 (with-current-buffer hit
544 ;; Rewind to the top page
546 (goto-char (point-min))
547 (ignore-errors (wl-message-narrow-to-page))
548 (setq entity wl-message-buffer-mime-entity)
549 (unless (eq wl-message-buffer-cur-display-type display-type)
550 (setq redisplay t))))
551 ;; delete tail and add new to the top.
552 (setq hit (wl-message-buffer-cache-add (list fname number msg-id)))
554 (when (or force-reload redisplay)
558 (when (or force-reload
560 (not (elmo-mime-entity-display-p
562 (if (wl-message-mime-analysis-p display-type)
565 (setq entity (elmo-message-mime-entity
568 (wl-message-get-original-buffer)
571 (not (wl-message-mime-analysis-p display-type)))))
573 (error "Cannot display message %s/%s" fname number))
574 (wl-message-display-internal entity display-type))
576 (wl-message-buffer-cache-delete)
577 (error "Display message %s/%s is quitted" fname number))
579 (wl-message-buffer-cache-delete)
580 (signal (car err) (cdr err))
581 nil))) ;; will not be used
584 (defun wl-message-display-internal (entity display-type)
585 (let ((default-mime-charset wl-mime-charset)
586 (elmo-mime-charset wl-mime-charset)
587 (wl-message-buffer-require-all-header
588 (wl-message-display-all-header-p display-type)))
589 (if (wl-message-mime-analysis-p display-type)
590 (elmo-mime-entity-display entity
592 'wl-original-message-mode
593 (wl-message-define-keymap))
594 (let* ((elmo-mime-display-header-analysis
595 (wl-message-mime-analysis-p display-type 'header))
596 (wl-highlight-x-face-function
597 (and elmo-mime-display-header-analysis
598 wl-highlight-x-face-function)))
599 (elmo-mime-entity-display-as-is entity
601 'wl-original-message-mode
602 (wl-message-define-keymap))
603 (let (buffer-read-only)
604 (wl-highlight-message (point-min) (point-max) t))))
605 (setq wl-message-buffer-cur-display-type display-type
606 wl-message-buffer-mime-entity entity)
607 (run-hooks 'wl-message-display-internal-hook)
608 (setq buffer-read-only t)))
610 (defun wl-message-buffer-prefetch-p (folder &optional number)
611 (and (or (not number)
612 (elmo-message-file-p folder number)
613 (let ((size (elmo-message-field folder number 'size)))
614 (not (and (integerp size)
615 wl-message-buffer-prefetch-threshold
616 (>= size wl-message-buffer-prefetch-threshold)))))
618 (elmo-folder-plugged-p folder)
619 (elmo-file-cache-exists-p
620 (elmo-message-field folder number 'message-id)))
622 ((eq wl-message-buffer-prefetch-folder-type-list t)
624 ((and number wl-message-buffer-prefetch-folder-type-list)
625 (memq (elmo-folder-type-internal
626 (elmo-message-folder folder number))
627 wl-message-buffer-prefetch-folder-type-list))
628 (wl-message-buffer-prefetch-folder-type-list
629 (let ((list wl-message-buffer-prefetch-folder-type-list)
632 (while (setq type (pop list))
633 (if (elmo-folder-contains-type folder type)
634 (throw 'done t)))))))
636 ((consp wl-message-buffer-prefetch-folder-list)
637 (wl-string-match-member (elmo-folder-name-internal folder)
638 wl-message-buffer-prefetch-folder-list))
639 (t wl-message-buffer-prefetch-folder-list)))))
641 (defsubst wl-message-buffer-prefetch-clear-timer ()
642 ;;; cannot use for the bug of fsf-compat package (1.09).
643 ;;; (cancel-function-timers 'wl-message-buffer-prefetch-subr)
644 (if (fboundp 'run-with-idle-timer)
645 (if (featurep 'xemacs)
646 (let ((p itimer-list))
648 (if (eq 'wl-message-buffer-prefetch-subr
649 (itimer-function (car p)))
650 (delete-itimer (car p)))
652 ;; FSF Emacs is correct
653 (cancel-function-timers 'wl-message-buffer-prefetch-subr))))
655 (defsubst wl-message-buffer-prefetch-set-timer (folder number count
657 (if (not (fboundp 'run-with-idle-timer))
658 (when (sit-for wl-message-buffer-prefetch-idle-time)
659 (wl-message-buffer-prefetch-subr
660 folder number count summary charset))
662 wl-message-buffer-prefetch-idle-time
664 'wl-message-buffer-prefetch-subr
665 folder number count summary charset)))
667 (defvar wl-message-buffer-prefetch-move-spec-alist nil)
669 (defun wl-message-buffer-prefetch-get-next (folder number summary)
670 (if (buffer-live-p summary)
671 (with-current-buffer summary
672 (let ((wl-summary-move-spec-alist
673 (or wl-message-buffer-prefetch-move-spec-alist
674 wl-summary-move-spec-alist))
676 (while (and (setq next (funcall
677 wl-message-buffer-prefetch-get-next-function
679 (not (wl-message-buffer-prefetch-p folder next))))
682 (defun wl-message-buffer-prefetch (folder number count
683 &optional summary charset)
684 (let* ((summary (or summary (get-buffer wl-summary-buffer-name)))
686 (when (and (> count 0)
687 (wl-message-buffer-prefetch-p folder))
688 (unless (wl-message-buffer-prefetch-p folder number)
690 (wl-message-buffer-prefetch-get-next folder number summary)))
692 (wl-message-buffer-prefetch-clear-timer)
693 (wl-message-buffer-prefetch-set-timer
694 folder num count summary charset)))))
696 (defun wl-message-buffer-prefetch-next (folder number count
697 &optional summary charset)
698 (let* ((summary (or summary (get-buffer wl-summary-buffer-name)))
700 (when (and (> count 0)
701 (wl-message-buffer-prefetch-p folder))
702 (setq next (wl-message-buffer-prefetch-get-next folder number summary))
704 (wl-message-buffer-prefetch-clear-timer)
705 (wl-message-buffer-prefetch-set-timer
706 folder next count summary charset)))))
708 (defun wl-message-buffer-prefetch-subr (folder number count summary charset)
709 (if (buffer-live-p summary)
710 (with-current-buffer summary
713 (>= (setq count (- count 1)) 0)
714 (string= (elmo-folder-name-internal folder)
715 (wl-summary-buffer-folder-name)))
716 (let* ((wl-mime-charset charset)
717 (default-mime-charset charset)
718 (message-id (elmo-message-field folder number 'message-id))
719 (key (list (elmo-folder-name-internal folder)
721 (hit (wl-message-buffer-cache-hit key))
722 (display-type (wl-message-make-display-type
723 wl-summary-buffer-display-mime-mode
724 wl-summary-buffer-display-header-mode))
725 time1 time2 sec micro)
726 (when wl-message-buffer-prefetch-debug
727 (message "%d: count %d, hit %s" number count (buffer-name hit)))
728 (if (and hit (buffer-live-p hit))
730 (wl-message-buffer-cache-sort
731 (wl-message-buffer-cache-entry-make key hit))
732 (wl-message-buffer-prefetch-subr
734 (wl-message-buffer-prefetch-get-next
735 folder number summary)
736 count summary charset))
738 (when wl-message-buffer-prefetch-debug
739 (setq time1 (current-time))
740 (message "Prefetching %d..." number))
741 (wl-message-buffer-display folder number
742 display-type nil 'unread)
743 (when (elmo-message-use-cache-p folder number)
744 (elmo-message-set-cached folder number t))
745 (when wl-message-buffer-prefetch-debug
746 (setq time2 (current-time))
747 (setq sec (- (nth 1 time2)(nth 1 time1)))
748 (setq micro (- (nth 2 time2)(nth 2 time1)))
749 (setq micro (+ micro (* 1000000 sec)))
750 (message "Prefetching %d...done(%f msec)."
755 (wl-message-buffer-prefetch-set-timer
757 (wl-message-buffer-prefetch-get-next
758 folder number summary)
759 count summary charset)
764 (when wl-message-buffer-prefetch-debug
765 (message "Buffer Cached Messages: %s"
768 (if (numberp (nth 1 (car cache)))
771 (elmo-folder-name-internal folder))
774 (format "*%d" (nth 1 (car cache))))
776 wl-message-buffer-cache " "))) )))
778 (defvar wl-message-button-map (make-sparse-keymap))
780 (defun wl-message-add-button (from to function &optional data)
781 "Create a button between FROM and TO with callback FUNCTION and DATA."
784 (nconc (list 'wl-message-button-callback function)
786 (list 'wl-message-button-data data))))
787 (let ((ov (make-overlay from to)))
788 (overlay-put ov 'mouse-face 'highlight)
789 (overlay-put ov 'local-map wl-message-button-map)
790 (overlay-put ov 'evaporate t)))
792 (defun wl-message-button-dispatcher (event)
793 "Select the button under point."
795 (mouse-set-point event)
796 (let ((callback (get-text-property (point) 'wl-message-button-callback))
797 (data (get-text-property (point) 'wl-message-button-data)))
799 (funcall callback data)
800 (wl-message-button-dispatcher-internal event))))
802 (defun wl-message-button-refer-article (data)
803 "Read article specified by Message-ID DATA at point."
804 (switch-to-buffer-other-window
805 wl-message-buffer-cur-summary-buffer)
806 (if (wl-summary-jump-to-msg-by-message-id data)
807 (wl-summary-redisplay)))
809 (defun wl-message-uu-substring (buf outbuf &optional first last)
812 (search-forward "\n\n")
814 ep filename case-fold-search)
818 (if (re-search-forward "^begin[ \t]+[0-9]+[ \t]+\\([^ ].*\\)" nil t)
819 (setq filename (buffer-substring (match-beginning 1)(match-end 1)))
821 (re-search-forward "^M.*$" nil t)) ; uuencoded string
824 (goto-char (point-max))
826 (re-search-backward "^end" sp t)
827 (re-search-backward "^M.*$" sp t)) ; uuencoded string
831 (goto-char (point-max))
832 (insert-buffer-substring buf sp ep)
836 ;;; Header narrowing courtesy of Hideyuki Shirai.
837 (defun wl-message-header-narrowing ()
839 (unless (eq this-command 'wl-summary-redisplay-all-header)
842 (goto-char (point-min))
843 (if (re-search-forward "^$" nil t)
845 (goto-char (point-max)))
846 (narrow-to-region (point-min) (point))
847 (let ((fields wl-message-header-narrowing-fields))
849 (wl-message-header-narrowing-1 (concat "^" (car fields) ":"))
850 (setq fields (cdr fields))))))))
852 (defvar wl-message-header-narrowing-map (make-sparse-keymap))
853 (define-key wl-message-header-narrowing-map [mouse-2]
854 'wl-message-header-narrowing-again-at-mouse)
856 (defvar wl-message-header-narrowing-widen-map (make-sparse-keymap))
857 (define-key wl-message-header-narrowing-widen-map [mouse-2]
858 'wl-message-header-narrowing-widen-at-mouse)
860 (defun wl-message-header-narrowing-again-at-mouse (event)
862 (save-window-excursion
864 (mouse-set-point event)
865 (wl-message-header-narrowing))))
867 (defun wl-message-header-narrowing-1 (hregexp)
868 (let ((case-fold-search t)
870 (goto-char (point-min))
871 (while (re-search-forward hregexp nil t)
872 (setq start (match-beginning 0))
874 (setq end (progn (while (looking-at "^[ \t]") (forward-line))
876 (line-end-position)))
877 (if (<= (count-lines start end) wl-message-header-narrowing-lines)
880 (forward-line (1- wl-message-header-narrowing-lines))
883 (unless (eq (get-char-property start 'invisible)
884 'wl-message-header-narrowing)
886 (let ((ovs (overlays-at start))
888 (while (and ovs (not (overlayp ov)))
889 (if (overlay-get (car ovs)
890 'wl-message-header-narrowing)
892 (setq ovs (cdr ovs)))
894 (make-overlay start end)))
895 (overlay-put ov 'wl-message-header-narrowing t)
896 (overlay-put ov 'evaporate t)
897 (overlay-put ov 'invisible 'wl-message-header-narrowing)
898 (overlay-put ov 'after-string
899 wl-message-header-narrowing-string))))))
901 (defun wl-message-header-narrowing-widen-at-mouse (event)
903 (save-selected-window
904 (select-window (posn-window (event-start event)))
905 (let* ((win (selected-window))
906 (wpos (window-start win))
907 (pos (mouse-set-point event))
908 (ovs (overlays-in (1- pos) (1+ pos))) ;; Uum...
910 (while (and ovs (not (overlayp ov)))
911 (when (overlay-get (car ovs) 'wl-message-header-narrowing)
913 (setq ovs (cdr ovs)))
915 (overlay-put ov 'face 'wl-message-header-narrowing-face)
916 (overlay-put ov 'local-map wl-message-header-narrowing-map)
917 (overlay-put ov 'invisible nil)
918 (overlay-put ov 'after-string nil))
919 (set-window-start win wpos))))
921 (defun wl-message-header-narrowing-setup ()
922 (when (boundp 'line-move-ignore-invisible)
923 (set (make-local-variable 'line-move-ignore-invisible) t))
924 (set-text-properties 0 (length wl-message-header-narrowing-string)
926 wl-message-header-narrowing-face
928 ,wl-message-header-narrowing-widen-map)
929 wl-message-header-narrowing-string))
931 (defun wl-message-header-narrowing-toggle ()
932 "Toggle header narrowing."
934 (when wl-message-use-header-narrowing
936 (goto-char (point-min))
937 (if (re-search-forward "^$" nil t)
939 (goto-char (point-max)))
940 (let ((ovs (overlays-in (point-min) (point)))
942 (while (setq ov (car ovs))
943 (when (overlay-get ov 'wl-message-header-narrowing)
944 (setq hn-ovs (cons ov hn-ovs)))
945 (setq ovs (cdr ovs)))
948 (delete-overlay (car hn-ovs))
949 (setq hn-ovs (cdr hn-ovs)))
950 (wl-message-header-narrowing))))))
953 (product-provide (provide 'wl-message) (require 'wl-version))
955 ;;; wl-message.el ends here