lisp/gnus/gnus-draft.el

   1 ;;; gnus-draft.el --- draft message support for Gnus
   2
   3 ;; Copyright (C) 1997-2016 Free Software Foundation, Inc.
   4
   5 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
   6 ;; Keywords: news
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs 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 3 of the License, or
  13 ;; (at your option) any later version.
  14
  15 ;; GNU Emacs 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.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  22
  23 ;;; Commentary:
  24
  25 ;;; Code:
  26
  27 (require 'gnus)
  28 (require 'gnus-sum)
  29 (require 'message)
  30 (require 'gnus-msg)
  31 (require 'nndraft)
  32 (require 'gnus-agent)
  33 (eval-when-compile (require 'cl))
  34
  35 ;;; Draft minor mode
  36
  37 (defvar gnus-draft-mode-map
  38   (let ((map (make-sparse-keymap)))
  39     (gnus-define-keys map
  40      "Dt" gnus-draft-toggle-sending
  41      "e"  gnus-draft-edit-message ;; Use `B w' for `gnus-summary-edit-article'
  42      "De" gnus-draft-edit-message
  43      "Ds" gnus-draft-send-message
  44      "DS" gnus-draft-send-all-messages)
  45     map))
  46
  47 (defun gnus-draft-make-menu-bar ()
  48   (unless (boundp 'gnus-draft-menu)
  49     (easy-menu-define
  50      gnus-draft-menu gnus-draft-mode-map ""
  51      '("Drafts"
  52        ["Toggle whether to send" gnus-draft-toggle-sending t]
  53        ["Edit" gnus-draft-edit-message t]
  54        ["Send selected message(s)" gnus-draft-send-message t]
  55        ["Send all messages" gnus-draft-send-all-messages t]
  56        ["Delete draft" gnus-summary-delete-article t]))))
  57
  58 (define-minor-mode gnus-draft-mode
  59   "Minor mode for providing a draft summary buffers.
  60
  61 \\{gnus-draft-mode-map}"
  62   :lighter " Draft" :keymap gnus-draft-mode-map
  63   (cond
  64    ((not (derived-mode-p 'gnus-summary-mode)) (setq gnus-draft-mode nil))
  65    (gnus-draft-mode
  66     ;; Set up the menu.
  67     (when (gnus-visual-p 'draft-menu 'menu)
  68       (gnus-draft-make-menu-bar))
  69     (add-hook 'gnus-summary-prepare-exit-hook 'gnus-draft-clear-marks t t))))
  70
  71 ;;; Commands
  72
  73 (defun gnus-draft-toggle-sending (article)
  74   "Toggle whether to send an article or not."
  75   (interactive (list (gnus-summary-article-number)))
  76   (if (gnus-draft-article-sendable-p article)
  77       (progn
  78         (push article gnus-newsgroup-unsendable)
  79         (gnus-summary-mark-article article gnus-unsendable-mark))
  80     (setq gnus-newsgroup-unsendable
  81           (delq article gnus-newsgroup-unsendable))
  82     (gnus-summary-mark-article article gnus-unread-mark))
  83   (gnus-summary-position-point))
  84
  85 (defun gnus-draft-edit-message ()
  86   "Enter a mail/post buffer to edit and send the draft."
  87   (interactive)
  88   (let ((article (gnus-summary-article-number))
  89         (group gnus-newsgroup-name))
  90     (gnus-draft-check-draft-articles (list article))
  91     (gnus-summary-mark-as-read article gnus-canceled-mark)
  92     (gnus-draft-setup article group t)
  93     (set-buffer-modified-p t)
  94     (save-excursion
  95       (save-restriction
  96         (message-narrow-to-headers)
  97         (message-remove-header "date")))
  98     (let ((message-draft-headers
  99            (delq 'Date (copy-sequence message-draft-headers))))
 100       (save-buffer))
 101     (let ((gnus-verbose-backends nil))
 102       (gnus-request-expire-articles (list article) group t))
 103     (push
 104      `((lambda ()
 105          (when (gnus-buffer-exists-p ,gnus-summary-buffer)
 106            (save-excursion
 107              (set-buffer ,gnus-summary-buffer)
 108              (gnus-cache-possibly-remove-article ,article nil nil nil t)))))
 109      message-send-actions)))
 110
 111 (defun gnus-draft-send-message (&optional n)
 112   "Send the current draft(s).
 113 Obeys the standard process/prefix convention."
 114   (interactive "P")
 115   (let* ((articles (gnus-summary-work-articles n))
 116          (total (length articles))
 117          article)
 118     (gnus-draft-check-draft-articles articles)
 119     (while (setq article (pop articles))
 120       (gnus-summary-remove-process-mark article)
 121       (unless (memq article gnus-newsgroup-unsendable)
 122         (let ((message-sending-message
 123                (format "Sending message %d of %d..."
 124                        (- total (length articles)) total)))
 125           (gnus-draft-send article gnus-newsgroup-name t))
 126         (gnus-summary-mark-article article gnus-canceled-mark)))))
 127
 128 (defun gnus-draft-send (article &optional group interactive)
 129   "Send message ARTICLE."
 130   (let* ((is-queue (or (not group)
 131                        (equal group "nndraft:queue")))
 132          (message-syntax-checks (if interactive message-syntax-checks
 133                                   'dont-check-for-anything-just-trust-me))
 134          (message-hidden-headers nil)
 135          (message-inhibit-body-encoding (or is-queue
 136                                             message-inhibit-body-encoding))
 137          (message-send-hook (and (not is-queue)
 138                                  message-send-hook))
 139          (message-setup-hook (and (not is-queue)
 140                                   message-setup-hook))
 141          (gnus-message-setup-hook (and (not is-queue)
 142                                        gnus-message-setup-hook))
 143          (message-signature (and (not is-queue)
 144                                  message-signature))
 145          (gnus-agent-queue-mail (and (not is-queue)
 146                                      gnus-agent-queue-mail))
 147          (rfc2047-encode-encoded-words nil)
 148          type method move-to)
 149     (gnus-draft-setup article (or group "nndraft:queue") nil 'dont-pop)
 150     ;; We read the meta-information that says how and where
 151     ;; this message is to be sent.
 152     (save-restriction
 153       (message-narrow-to-headers)
 154       (when (re-search-forward
 155              (concat "^" (regexp-quote gnus-agent-target-move-group-header)
 156                      ":") nil t)
 157         (skip-syntax-forward "-")
 158         (setq move-to (buffer-substring (point) (point-at-eol)))
 159         (message-remove-header gnus-agent-target-move-group-header))
 160       (goto-char (point-min))
 161       (when (re-search-forward
 162              (concat "^" (regexp-quote gnus-agent-meta-information-header) ":")
 163              nil t)
 164         (setq type (ignore-errors (read (current-buffer)))
 165               method (ignore-errors (read (current-buffer))))
 166         (message-remove-header gnus-agent-meta-information-header)))
 167     ;; Let Agent restore any GCC lines and have message.el perform them.
 168     (gnus-agent-restore-gcc)
 169     ;; Then we send it.  If we have no meta-information, we just send
 170     ;; it and let Message figure out how.
 171     (when (and (or (null method)
 172                    (gnus-server-opened method)
 173                    (gnus-open-server method))
 174                (if type
 175                    (let ((message-this-is-news (eq type 'news))
 176                          (message-this-is-mail (eq type 'mail))
 177                          (gnus-post-method method)
 178                          (message-post-method method))
 179                      (if move-to
 180                          (gnus-inews-do-gcc move-to)
 181                        (message-send-and-exit)))
 182                  (if move-to
 183                      (gnus-inews-do-gcc move-to)
 184                    (message-send-and-exit))))
 185       (let ((gnus-verbose-backends nil))
 186         (gnus-request-expire-articles
 187          (list article) (or group "nndraft:queue") t)))))
 188
 189 (defun gnus-draft-send-all-messages ()
 190   "Send all the sendable drafts."
 191   (interactive)
 192   (when (or
 193          gnus-expert-user
 194          (gnus-y-or-n-p
 195           "Send all drafts? "))
 196     (gnus-uu-mark-buffer)
 197     (gnus-draft-send-message)))
 198
 199 (defun gnus-group-send-queue ()
 200   "Send all sendable articles from the queue group."
 201   (interactive)
 202   (when (or gnus-plugged
 203             (not gnus-agent-prompt-send-queue)
 204             (gnus-y-or-n-p "Gnus is unplugged; really send queue? "))
 205     (gnus-activate-group "nndraft:queue")
 206     (save-excursion
 207       (let* ((articles (nndraft-articles))
 208              (unsendable (gnus-uncompress-range
 209                           (cdr (assq 'unsend
 210                                      (gnus-info-marks
 211                                       (gnus-get-info "nndraft:queue"))))))
 212              (gnus-posting-styles nil)
 213              message-send-mail-partially-limit
 214              (total (length articles))
 215              article)
 216         (while (setq article (pop articles))
 217           (unless (memq article unsendable)
 218             (let ((message-sending-message
 219                    (format "Sending message %d of %d..."
 220                            (- total (length articles)) total)))
 221               (gnus-draft-send article))))))
 222     (gnus-group-refresh-group "nndraft:queue")))
 223
 224 ;;;###autoload
 225 (defun gnus-draft-reminder ()
 226   "Reminder user if there are unsent drafts."
 227   (interactive)
 228   (if (gnus-alive-p)
 229       (let (active)
 230         (catch 'continue
 231           (dolist (group '("nndraft:drafts" "nndraft:queue"))
 232             (setq active (gnus-activate-group group))
 233             (if (and active (>= (cdr active) (car active)))
 234                 (if (y-or-n-p "There are unsent drafts.  Confirm to exit? ")
 235                     (throw 'continue t)
 236                   (error "Stop!"))))))))
 237
 238 (defcustom gnus-draft-setup-hook nil
 239   "Hook run after setting up a draft buffer."
 240   :group 'gnus-message
 241   :version "23.1" ;; No Gnus
 242   :type 'hook)
 243
 244
 245 (defun gnus-draft-setup (narticle group &optional restore dont-pop)
 246   "Setup a mail draft buffer.
 247 If DONT-POP is nil, display the buffer after setting it up."
 248   (let (ga)
 249     (gnus-setup-message 'forward
 250       (let ((article narticle))
 251         (message-mail nil nil nil nil
 252                       (if dont-pop
 253                           (lambda (buf) (set-buffer (get-buffer-create buf)))))
 254         (let ((inhibit-read-only t))
 255           (erase-buffer))
 256         (if (not (gnus-request-restore-buffer article group))
 257             (error "Couldn't restore the article")
 258           (when (and restore
 259                      (equal group "nndraft:queue"))
 260             (mime-to-mml))
 261           ;; Insert the separator.
 262           (goto-char (point-min))
 263           (search-forward "\n\n")
 264           (forward-char -1)
 265           (save-restriction
 266             (narrow-to-region (point-min) (point))
 267             (setq ga
 268                   (message-fetch-field gnus-draft-meta-information-header)))
 269           (insert mail-header-separator)
 270           (forward-line 1)
 271           (message-set-auto-save-file-name))))
 272     (gnus-backlog-remove-article group narticle)
 273     (when (and ga
 274                (ignore-errors (setq ga (car (read-from-string ga)))))
 275       (setq gnus-newsgroup-name
 276             (if (equal (car ga) "") nil (car ga)))
 277       (gnus-configure-posting-styles)
 278       (setq gnus-message-group-art (cons gnus-newsgroup-name (cadr ga)))
 279       (setq message-post-method
 280             `(lambda (arg)
 281                (gnus-post-method arg ,(car ga))))
 282       (unless (equal (cadr ga) "")
 283         (dolist (article (cdr ga))
 284           (message-add-action
 285            `(progn
 286               (gnus-add-mark ,(car ga) 'replied ,article)
 287               (gnus-request-set-mark ,(car ga) (list (list (list ,article)
 288                                                            'add '(reply)))))
 289            'send))))
 290     (run-hooks 'gnus-draft-setup-hook)))
 291
 292 (defun gnus-draft-article-sendable-p (article)
 293   "Say whether ARTICLE is sendable."
 294   (not (memq article gnus-newsgroup-unsendable)))
 295
 296 (defun gnus-draft-check-draft-articles (articles)
 297   "Check whether the draft articles ARTICLES are under edit."
 298   (when (equal gnus-newsgroup-name "nndraft:drafts")
 299     (let ((buffers (buffer-list))
 300           file buffs buff)
 301       (save-current-buffer
 302         (while (and articles
 303                     (not buff))
 304           (setq file (nndraft-article-filename (pop articles))
 305                 buffs buffers)
 306           (while buffs
 307             (set-buffer (setq buff (pop buffs)))
 308             (if (and buffer-file-name
 309                      (equal (file-remote-p file)
 310                             (file-remote-p buffer-file-name))
 311                      (string-equal (file-truename buffer-file-name)
 312                                    (file-truename file))
 313                      (buffer-modified-p))
 314                 (setq buffs nil)
 315               (setq buff nil)))))
 316       (when buff
 317         (let* ((window (get-buffer-window buff t))
 318                (frame (and window (window-frame window))))
 319           (if frame
 320               (select-frame-set-input-focus frame)
 321             (pop-to-buffer buff t)))
 322         (error "The draft %s is under edit" file)))))
 323
 324 (defun gnus-draft-clear-marks ()
 325   (setq gnus-newsgroup-reads nil
 326         gnus-newsgroup-marked nil
 327         gnus-newsgroup-unreads (nndraft-articles)))
 328
 329 (provide 'gnus-draft)
 330
 331 ;;; gnus-draft.el ends here