;;;
;;; Copyright (C) 1995 Free Software Foundation, Inc.
;;; Copyright (C) 1994,1995 MORIOKA Tomohiko
;;;
;;; Author:   MORIOKA Tomohiko <morioka@jaist.ac.jp>
;;; Version:
;;;	$Id: tm-rmail.el,v 7.15 1995/11/12 15:15:15 morioka Exp $
;;; Keywords: mail, MIME, multimedia, multilingual, encoded-word
;;;
;;; This file is part of tm (Tools for MIME).
;;;

(require 'tl-list)
(require 'tl-misc)
(require 'rmail)

(autoload 'mime/viewer-mode "tm-view" "View MIME message." t)
(autoload 'mime/Content-Type "tm-view" "parse Content-Type field.")
(autoload 'mime/decode-message-header "tm-ew-d" "Decode MIME encoded-word." t)


;;; @ variables
;;;

(defvar tm-rmail/decode-all nil)


;;; @ message filter
;;;

(setq rmail-message-filter
      (function
       (lambda ()
	 (let ((mf (buffer-modified-p))
	       (buffer-read-only nil))
	   (mime/decode-message-header)
	   (set-buffer-modified-p mf)
	   ))))


;;; @ MIME preview
;;;

(defun tm-rmail/show-all-header-p ()
  (save-restriction
    (narrow-to-region (point-min)
		      (and (re-search-forward "^$" nil t)
			   (match-beginning 0)))
    (goto-char (point-min))
    (re-search-forward rmail-ignored-headers nil t)
    ))

(defun tm-rmail/preview-message ()
  (interactive)
  (setq tm-rmail/decode-all t)
  (let ((ret (rmail-widen-to-current-msgbeg
	      (function
	       (lambda ()
		 (cons (mime/Content-Type)
		       (mime/Content-Transfer-Encoding "7bit")
		       )
		 )))))
    (narrow-to-region (point-min)
		      (save-excursion
			(goto-char (point-max))
			(if (and (re-search-backward "^\n")
				 (eq (match-end 0)(point-max)))
			    (match-beginning 0)
			  (point-max)
			  )))
    (mime/viewer-mode nil (car ret)(cdr ret) nil
		      (format "*Preview-%s [%d/%d]*"
			      (buffer-name)
			      rmail-current-message rmail-total-messages))
    ))

(defun tm-rmail/preview-message-if-you-need ()
  (if tm-rmail/decode-all
      (tm-rmail/preview-message)
    ))

(add-hook 'rmail-show-message-hook 'tm-rmail/preview-message-if-you-need)

(define-key rmail-mode-map "v" (function tm-rmail/preview-message))

(defun tm-rmail/setup ()
  (local-set-key "v" (function
		      (lambda ()
			(interactive)
			(pop-to-buffer rmail-buffer)
			(tm-rmail/preview-message)
			)))
  )

(add-hook 'rmail-summary-mode-hook 'tm-rmail/setup)


;;; @ over-to-* and quitting methods
;;;

(defun tm-rmail/quitting-method-to-summary ()
  (mime-viewer/kill-buffer)
  (rmail-summary)
  (delete-other-windows)
  )

(defun tm-rmail/quitting-method-to-article ()
  (setq tm-rmail/decode-all nil)
  (mime-viewer/kill-buffer)
  )

(defalias 'tm-rmail/quitting-method 'tm-rmail/quitting-method-to-article)


(defun tm-rmail/over-to-previous-method ()
  (let (tm-rmail/decode-all)
    (mime-viewer/quit)
    )
  (if (not (eq (rmail-next-undeleted-message -1) t))
      (tm-rmail/preview-message)
    )
  )

(defun tm-rmail/over-to-next-method ()
  (let (tm-rmail/decode-all)
    (mime-viewer/quit)
    )
  (if (not (eq (rmail-next-undeleted-message 1) t))
      (tm-rmail/preview-message)
    )
  )

(call-after-loaded
 'tm-view
 (function
  (lambda ()
    (set-alist 'mime-viewer/quitting-method-alist
	       'rmail-mode
	       (function tm-rmail/quitting-method))
    
    (set-alist 'mime-viewer/over-to-previous-method-alist
	       'rmail-mode
	       (function tm-rmail/over-to-previous-method))
    
    (set-alist 'mime-viewer/over-to-next-method-alist
	       'rmail-mode
	       (function tm-rmail/over-to-next-method))
    )))


;;; @ for tm-partial
;;;

(call-after-loaded
 'tm-partial
 (function
  (lambda ()
    (set-atype 'mime/content-decoding-condition
	       '((type . "message/partial")
		 (method . mime-article/grab-message/partials)
		 (major-mode . rmail-mode)
		 (summary-buffer-exp
		  . (progn
		      (rmail-summary)
		      (pop-to-buffer rmail-buffer)
		      rmail-summary-buffer))
		 ))
    (set-alist 'tm-partial/preview-article-method-alist
	       'rmail-mode
	       (function
		(lambda ()
		  (rmail-summary-goto-msg (count-lines 1 (point)))
		  (pop-to-buffer rmail-buffer)
		  (tm-rmail/preview-message)
		  )))
    )))


;;; @ for tm-edit
;;;

(call-after-loaded
 'tm-edit
 (function
  (lambda ()
    
(defun tm-rmail/forward ()
  "\
Forward current message in message/rfc822 content-type message
from rmail. The message will be appended if being composed."
  (interactive)
  ;;>> this gets set even if we abort. Can't do anything about it, though.
  (rmail-set-attribute "forwarded" t)
  (let ((initialized nil)
	(beginning nil)
	(forwarding-buffer (current-buffer))
	(subject (concat "["
			 (mail-strip-quoted-names
			  (mail-fetch-field "From"))
			 ": " (or (mail-fetch-field "Subject") "") "]")))
    ;; If only one window, use it for the mail buffer.
    ;; Otherwise, use another window for the mail buffer
    ;; so that the Rmail buffer remains visible
    ;; and sending the mail will get back to it.
    (setq initialized
	  (if (one-window-p t)
	      (mail nil nil subject)
	    (mail-other-window nil nil subject)))
    (save-excursion
      (goto-char (point-max))
      (forward-line 1)
      (setq beginning (point))
      (mime-editor/insert-tag "message" "rfc822")
      (insert-buffer forwarding-buffer))
    (if (not initialized)
	(goto-char beginning))
    ))

(substitute-key-definition 'rmail-forward
			   'tm-rmail/forward
			   rmail-mode-map)

(defun gnus-mail-forward-using-mail-mime ()
  "\
Forward current article in message/rfc822 content-type message from
GNUS. The message will be appended if being composed."
  (let ((initialized nil)
	(beginning nil)
	(forwarding-buffer (current-buffer))
	(subject
	 (concat "[" gnus-newsgroup-name "] "
		 ;;(mail-strip-quoted-names (gnus-fetch-field "From")) ": "
		 (or (gnus-fetch-field "Subject") ""))))
    ;; If only one window, use it for the mail buffer.
    ;; Otherwise, use another window for the mail buffer
    ;; so that the Rmail buffer remains visible
    ;; and sending the mail will get back to it.
    (setq initialized
	  (if (one-window-p t)
	      (mail nil nil subject)
	    (mail-other-window nil nil subject)))
    (save-excursion
      (goto-char (point-max))
      (setq beginning (point))
      (mime-editor/insert-tag "message" "rfc822")
      (insert-buffer forwarding-buffer)
      ;; You have a chance to arrange the message.
      (run-hooks 'gnus-mail-forward-hook)
      )
    (if (not initialized)
	(goto-char beginning))
    ))

;; (setq gnus-mail-forward-method 'mime-forward-from-gnus-using-mail)

)))


;;; @ end
;;;

(provide 'tm-rmail)

(run-hooks 'tm-rmail-load-hook)