320 lines
12 KiB
EmacsLisp
320 lines
12 KiB
EmacsLisp
;;; gnus-draft.el --- draft message support for Gnus -*- lexical-binding: t; -*-
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;; Copyright (C) 1997-2024 Free Software Foundation, Inc.
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;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
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;; Keywords: news
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;;; Code:
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(require 'gnus)
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(require 'gnus-sum)
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(require 'message)
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(require 'gnus-msg)
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(require 'nndraft)
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(require 'gnus-agent)
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;;; Draft minor mode
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(defvar-keymap gnus-draft-mode-map
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"D t" #'gnus-draft-toggle-sending
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"e" #' gnus-draft-edit-message ;; Use `B w' for `gnus-summary-edit-article'
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"D e" #'gnus-draft-edit-message
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"D s" #'gnus-draft-send-message
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"D S" #'gnus-draft-send-all-messages)
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(defun gnus-draft-make-menu-bar ()
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(unless (boundp 'gnus-draft-menu)
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(easy-menu-define
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gnus-draft-menu gnus-draft-mode-map ""
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'("Drafts"
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["Toggle whether to send" gnus-draft-toggle-sending t]
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["Edit" gnus-draft-edit-message t]
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["Send selected message(s)" gnus-draft-send-message t]
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["Send all messages" gnus-draft-send-all-messages t]
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["Delete draft" gnus-summary-delete-article t]))))
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(define-minor-mode gnus-draft-mode
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"Minor mode for providing a draft summary buffers.
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\\{gnus-draft-mode-map}"
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:lighter " Draft" :keymap gnus-draft-mode-map
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(cond
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((not (derived-mode-p 'gnus-summary-mode)) (setq gnus-draft-mode nil))
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(gnus-draft-mode
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;; Set up the menu.
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(when (gnus-visual-p 'draft-menu 'menu)
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(gnus-draft-make-menu-bar))
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(add-hook 'gnus-summary-prepare-exit-hook #'gnus-draft-clear-marks t t))))
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;;; Commands
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(defun gnus-draft-toggle-sending (article)
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"Toggle whether to send an article or not."
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(interactive (list (gnus-summary-article-number)) gnus-summary-mode)
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(if (gnus-draft-article-sendable-p article)
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(progn
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(push article gnus-newsgroup-unsendable)
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(gnus-summary-mark-article article gnus-unsendable-mark))
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(setq gnus-newsgroup-unsendable
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(delq article gnus-newsgroup-unsendable))
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(gnus-summary-mark-article article gnus-unread-mark))
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(gnus-summary-position-point))
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(defun gnus-draft-edit-message ()
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"Enter a mail/post buffer to edit and send the draft."
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(interactive nil gnus-summary-mode)
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(let ((article (gnus-summary-article-number))
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(group gnus-newsgroup-name))
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(gnus-draft-check-draft-articles (list article))
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(gnus-summary-mark-as-read article gnus-canceled-mark)
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(gnus-draft-setup article group t)
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(set-buffer-modified-p t)
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(save-excursion
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(save-restriction
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(message-narrow-to-headers)
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(message-remove-header "date")))
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(let ((message-draft-headers (remq 'Date message-draft-headers)))
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(save-buffer))
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(let ((gnus-verbose-backends nil))
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(gnus-request-expire-articles (list article) group t))
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(push
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(let ((buf gnus-summary-buffer))
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(lambda ()
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(when (gnus-buffer-live-p buf)
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(with-current-buffer buf
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(gnus-cache-possibly-remove-article article nil nil nil t)))))
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message-send-actions)))
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(defun gnus-draft-send-message (&optional n)
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"Send the current draft(s).
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Obeys the standard process/prefix convention."
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(interactive "P" gnus-summary-mode)
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(let* ((articles (gnus-summary-work-articles n))
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(total (length articles))
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article)
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(gnus-draft-check-draft-articles articles)
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(while (setq article (pop articles))
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(gnus-summary-remove-process-mark article)
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(unless (memq article gnus-newsgroup-unsendable)
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(let ((message-sending-message
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(format "Sending message %d of %d..."
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(- total (length articles)) total)))
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(gnus-draft-send article gnus-newsgroup-name t))
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(gnus-summary-mark-article article gnus-canceled-mark)))))
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(defun gnus-draft-send (article &optional group interactive)
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"Send message ARTICLE."
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(let* ((is-queue (or (not group)
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(equal group "nndraft:queue")))
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(message-syntax-checks (if interactive message-syntax-checks
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'dont-check-for-anything-just-trust-me))
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(message-hidden-headers nil)
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(message-inhibit-body-encoding (or is-queue
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message-inhibit-body-encoding))
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(message-send-hook (and (not is-queue)
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message-send-hook))
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(message-setup-hook (and (not is-queue)
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message-setup-hook))
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(gnus-message-setup-hook (and (not is-queue)
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gnus-message-setup-hook))
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(message-signature (and (not is-queue)
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message-signature))
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(gnus-agent-queue-mail (and (not is-queue)
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gnus-agent-queue-mail))
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(rfc2047-encode-encoded-words nil)
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type method move-to)
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(gnus-draft-setup article (or group "nndraft:queue") nil 'dont-pop)
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;; We read the meta-information that says how and where
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;; this message is to be sent.
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(save-restriction
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(message-narrow-to-headers)
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(when (re-search-forward
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(concat "^" (regexp-quote gnus-agent-target-move-group-header)
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":") nil t)
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(skip-syntax-forward "-")
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(setq move-to (buffer-substring (point) (line-end-position)))
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(message-remove-header gnus-agent-target-move-group-header))
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(goto-char (point-min))
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(when (re-search-forward
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(concat "^" (regexp-quote gnus-agent-meta-information-header) ":")
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nil t)
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(setq type (ignore-errors (read (current-buffer)))
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method (ignore-errors (read (current-buffer))))
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(message-remove-header gnus-agent-meta-information-header)))
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;; Let Agent restore any GCC lines and have message.el perform them.
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(gnus-agent-restore-gcc)
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;; Then we send it. If we have no meta-information, we just send
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;; it and let Message figure out how.
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(when (and (or (null method)
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(gnus-server-opened method)
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(gnus-open-server method))
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(if type
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(let ((message-this-is-news (eq type 'news))
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(message-this-is-mail (eq type 'mail))
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(gnus-post-method method)
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(message-post-method method))
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(if move-to
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(gnus-inews-do-gcc move-to)
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(message-send-and-exit)))
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(if move-to
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(gnus-inews-do-gcc move-to)
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(message-send-and-exit))))
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(let ((gnus-verbose-backends nil))
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(gnus-request-expire-articles
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(list article) (or group "nndraft:queue") t)))))
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(defun gnus-draft-send-all-messages ()
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"Send all the sendable drafts."
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(interactive)
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(when (or
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gnus-expert-user
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(gnus-y-or-n-p
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"Send all drafts? "))
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(gnus-uu-mark-buffer)
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(gnus-draft-send-message)))
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(defun gnus-group-send-queue ()
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"Send all sendable articles from the queue group."
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(interactive)
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(when (or gnus-plugged
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(not gnus-agent-prompt-send-queue)
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(gnus-y-or-n-p "Gnus is unplugged; really send queue? "))
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(gnus-activate-group "nndraft:queue")
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(save-excursion
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(let* ((articles (nndraft-articles))
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(unsendable (range-uncompress
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(cdr (assq 'unsend
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(gnus-info-marks
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(gnus-get-info "nndraft:queue"))))))
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(gnus-posting-styles nil)
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message-send-mail-partially-limit
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(total (length articles))
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article)
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(while (setq article (pop articles))
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(unless (memq article unsendable)
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(let ((message-sending-message
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(format "Sending message %d of %d..."
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(- total (length articles)) total)))
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(gnus-draft-send article))))))
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(gnus-group-refresh-group "nndraft:queue")))
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;;;###autoload
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(defun gnus-draft-reminder ()
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"Reminder user if there are unsent drafts."
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(interactive)
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(if (gnus-alive-p)
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(let (active)
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(catch 'continue
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(dolist (group '("nndraft:drafts" "nndraft:queue"))
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(setq active (gnus-activate-group group))
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(if (and active (>= (cdr active) (car active)))
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(if (y-or-n-p "There are unsent drafts. Confirm to exit? ")
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(throw 'continue t)
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(error "Stop!"))))))))
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(defcustom gnus-draft-setup-hook nil
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"Hook run after setting up a draft buffer."
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:group 'gnus-message
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:version "23.1" ;; No Gnus
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:type 'hook)
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(defun gnus-draft-setup (narticle group &optional restore dont-pop)
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"Setup a mail draft buffer.
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If DONT-POP is nil, display the buffer after setting it up."
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(let (ga)
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(gnus-setup-message 'forward
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(let ((article narticle))
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(message-mail nil nil nil nil
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(if dont-pop
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(lambda (buf) (set-buffer (gnus-get-buffer-create buf)))))
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(let ((inhibit-read-only t))
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(erase-buffer))
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(if (not (gnus-request-restore-buffer article group))
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(error "Couldn't restore the article")
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(when (and restore
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(equal group "nndraft:queue"))
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(mime-to-mml))
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;; Insert the separator.
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(goto-char (point-min))
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(search-forward "\n\n")
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(forward-char -1)
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(save-restriction
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(narrow-to-region (point-min) (point))
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(setq ga
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(message-fetch-field gnus-draft-meta-information-header)))
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(insert mail-header-separator)
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(forward-line 1))))
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(gnus-backlog-remove-article group narticle)
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(when (and ga
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(ignore-errors (setq ga (car (read-from-string ga)))))
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(setq gnus-newsgroup-name
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(if (equal (car ga) "") nil (car ga)))
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(gnus-configure-posting-styles)
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(setq gnus-message-group-art (cons gnus-newsgroup-name (cadr ga)))
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(setq message-post-method
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(lambda (arg) (gnus-post-method arg (car ga))))
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(unless (equal (cadr ga) "")
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(dolist (article (cdr ga))
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(message-add-action
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`(progn
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(gnus-add-mark ,(car ga) 'replied ,article)
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(gnus-request-set-mark ,(car ga) (list (list (list ,article)
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'add '(reply)))))
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'send))))
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(run-hooks 'gnus-draft-setup-hook)))
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(defun gnus-draft-article-sendable-p (article)
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"Say whether ARTICLE is sendable."
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(not (memq article gnus-newsgroup-unsendable)))
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(defun gnus-draft-check-draft-articles (articles)
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"Check whether the draft articles ARTICLES are under edit."
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(when (equal gnus-newsgroup-name "nndraft:drafts")
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(let* ((files (mapcar #'nndraft-article-filename articles))
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(buffs (delq nil (mapcar (lambda (f)
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(find-buffer-visiting
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f (lambda (b) (buffer-modified-p b))))
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files))))
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(when buffs
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(if (= 1 (length buffs))
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;; We might have arrived here via `gnus-draft-edit-message';
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;; either way show the user the draft with unsaved changes.
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(let* ((window (get-buffer-window (car buffs) t))
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(frame (and window (window-frame window))))
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(if frame
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(select-frame-set-input-focus frame)
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(pop-to-buffer (car buffs) t))
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(error "Draft is already under edit"))
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;; Otherwise we got here from `gnus-draft-send-message', and
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;; the main thing is to interrupt the sending.
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(display-buffer (list-buffers-noselect t buffs))
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(error "Some drafts have unsaved changes: %S" buffs))))))
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(defun gnus-draft-clear-marks ()
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(setq gnus-newsgroup-reads nil
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gnus-newsgroup-marked nil
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gnus-newsgroup-unreads (nndraft-articles)))
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(provide 'gnus-draft)
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;;; gnus-draft.el ends here
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