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;;; Miscellaneous commands for GNUS newsreader
;; Copyright (C) 1989 Fujitsu Laboratories LTD.
;; Copyright (C) 1989, 1990 Masanobu UMEDA
;; $Header: gnusmisc.el,v 1.2 90/03/23 13:25:04 umerin Locked $
;; This file is part of GNU Emacs.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY. No author or distributor
;; accepts responsibility to anyone for the consequences of using it
;; or for whether it serves any particular purpose or works at all,
;; unless he says so in writing. Refer to the GNU Emacs General Public
;; License for full details.
;; Everyone is granted permission to copy, modify and redistribute
;; GNU Emacs, but only under the conditions described in the
;; GNU Emacs General Public License. A copy of this license is
;; supposed to have been given to you along with GNU Emacs so you
;; can know your rights and responsibilities. It should be in a
;; file named COPYING. Among other things, the copyright notice
;; and this notice must be preserved on all copies.
(provide 'gnusmisc)
(require 'gnus)
;;;
;;; GNUS Browse-Killed Mode
;;;
;; Some ideas are due to roland@wheaties.ai.mit.edu (Roland McGrath).
;; I'd like to thank him very much.
(defvar gnus-Browse-killed-mode-hook nil
"*A hook for GNUS Browse-Killed Mode.")
(defvar gnus-Browse-killed-buffer "*Killed Newsgroup*")
(defvar gnus-Browse-killed-mode-map nil)
(defvar gnus-winconf-browse-killed nil)
(put 'gnus-Browse-killed-mode 'mode-class 'special)
;; Make the buffer to be managed by GNUS.
(or (memq gnus-Browse-killed-buffer gnus-buffer-list)
(setq gnus-buffer-list
(cons gnus-Browse-killed-buffer gnus-buffer-list)))
(if gnus-Browse-killed-mode-map
nil
(setq gnus-Browse-killed-mode-map (make-keymap))
(suppress-keymap gnus-Browse-killed-mode-map t)
(define-key gnus-Browse-killed-mode-map " " 'gnus-Group-next-group)
(define-key gnus-Browse-killed-mode-map "\177" 'gnus-Group-prev-group)
(define-key gnus-Browse-killed-mode-map "\C-n" 'gnus-Group-next-group)
(define-key gnus-Browse-killed-mode-map "\C-p" 'gnus-Group-prev-group)
(define-key gnus-Browse-killed-mode-map "n" 'gnus-Group-next-group)
(define-key gnus-Browse-killed-mode-map "p" 'gnus-Group-prev-group)
(define-key gnus-Browse-killed-mode-map "y" 'gnus-Browse-killed-yank)
(define-key gnus-Browse-killed-mode-map "\C-y" 'gnus-Browse-killed-yank)
(define-key gnus-Browse-killed-mode-map "l" 'gnus-Browse-killed-groups)
(define-key gnus-Browse-killed-mode-map "q" 'gnus-Browse-killed-exit)
(define-key gnus-Browse-killed-mode-map "\C-c\C-c" 'gnus-Browse-killed-exit)
(define-key gnus-Browse-killed-mode-map "\C-c\C-i" 'gnus-Info-find-node))
(defun gnus-Browse-killed-mode ()
"Major mode for browsing the killed newsgroups.
All normal editing commands are turned off.
Instead, these commands are available:
\\{gnus-Browse-killed-mode-map}
The killed newsgroups are saved in the quick startup file \".newsrc.el\"
unless disabled inthe options line of the startup file \".newsrc\".
Entry to this mode calls `gnus-Browse-killed-mode-hook' with no arguments
if that value is non-nil."
(interactive)
(kill-all-local-variables)
;; Gee. Why don't you upgrade?
(cond ((boundp 'mode-line-modified)
(setq mode-line-modified "--- "))
((listp (default-value 'mode-line-format))
(setq mode-line-format
(cons "--- " (cdr (default-value 'mode-line-format)))))
(t
(setq mode-line-format
"--- GNUS: Killed Newsgroups %[(%m)%]----%3p-%-")))
(setq major-mode 'gnus-Browse-killed-mode)
(setq mode-name "Browse-Killed")
(setq mode-line-buffer-identification "GNUS: Killed Newsgroups")
(use-local-map gnus-Browse-killed-mode-map)
(buffer-flush-undo (current-buffer))
(setq buffer-read-only t) ;Disable modification
(run-hooks 'gnus-Browse-killed-mode-hook))
(defun gnus-Browse-killed-groups ()
"Browse the killed newsgroups.
\\<gnus-Browse-killed-mode-map>\\[gnus-Browse-killed-yank] yanks the newsgroup on the current line into the Newsgroups buffer."
(interactive)
(or gnus-killed-assoc
(error "No killed newsgroups"))
;; Save current window configuration if this is first invocation..
(or (get-buffer-window gnus-Browse-killed-buffer)
(setq gnus-winconf-browse-killed
(current-window-configuration)))
;; Prepare browsing buffer.
(pop-to-buffer (get-buffer-create gnus-Browse-killed-buffer))
(gnus-Browse-killed-mode)
(let ((buffer-read-only nil)
(killed-assoc gnus-killed-assoc))
(erase-buffer)
(while killed-assoc
(insert (gnus-Group-prepare-line (car killed-assoc)))
(setq killed-assoc (cdr killed-assoc)))
(goto-char (point-min))
))
(defun gnus-Browse-killed-yank ()
"Yank current newsgroup to Newsgroup buffer."
(interactive)
(let ((group (gnus-Group-group-name)))
(if group
(let* ((buffer-read-only nil)
(killed (assoc group gnus-killed-assoc)))
(pop-to-buffer gnus-Group-buffer) ;Needed to adjust point.
(if killed
(gnus-Group-insert-group killed))
(pop-to-buffer gnus-Browse-killed-buffer)
(beginning-of-line)
(delete-region (point)
(progn (forward-line 1) (point)))
)))
(gnus-Browse-killed-check-buffer))
(defun gnus-Browse-killed-check-buffer ()
"Exit if the buffer is empty by deleting the window and killing the buffer."
(and (null gnus-killed-assoc)
(get-buffer gnus-Browse-killed-buffer)
(gnus-Browse-killed-exit)))
(defun gnus-Browse-killed-exit ()
"Exit this mode by deleting the window and killing the buffer."
(interactive)
(and (get-buffer-window gnus-Browse-killed-buffer)
(delete-window (get-buffer-window gnus-Browse-killed-buffer)))
(kill-buffer gnus-Browse-killed-buffer)
;; Restore previous window configuration if available.
(and gnus-winconf-browse-killed
(set-window-configuration gnus-winconf-browse-killed))
(setq gnus-winconf-browse-killed nil))
;;;
;;; kill/yank newsgroup commands of GNUS Group Mode
;;;
(defun gnus-Group-kill-group (n)
"Kill newsgroup on current line, repeated prefix argument N times.
The killed newsgroups can be yanked by using \\[gnus-Group-yank-group]."
(interactive "p")
(let ((buffer-read-only nil)
(group nil))
(while (> n 0)
(setq group (gnus-Group-group-name))
(or group
(signal 'end-of-buffer nil))
(beginning-of-line)
(delete-region (point)
(progn (forward-line 1) (point)))
(gnus-kill-newsgroup group)
(setq n (1- n))
;; Add to killed newsgroups in the buffer if exists.
(if (get-buffer gnus-Browse-killed-buffer)
(save-excursion
(set-buffer gnus-Browse-killed-buffer)
(let ((buffer-read-only nil))
(goto-char (point-min))
(insert (gnus-Group-prepare-line (car gnus-killed-assoc)))
)))
)
(search-forward ":" nil t)
))
(defun gnus-Group-yank-group ()
"Yank the last newsgroup killed with \\[gnus-Group-kill-group],
inserting it before the newsgroup on the line containging point."
(interactive)
(gnus-Group-insert-group (car gnus-killed-assoc))
;; Remove killed newsgroups from the buffer if exists.
(if (get-buffer gnus-Browse-killed-buffer)
(save-excursion
(set-buffer gnus-Browse-killed-buffer)
(let ((buffer-read-only nil))
(goto-char (point-min))
(delete-region (point-min)
(progn (forward-line 1) (point)))
)))
(gnus-Browse-killed-check-buffer))
(defun gnus-Group-insert-group (info)
"Insert newsgroup at current line using `gnus-newsrc-assoc' INFO."
(if (null gnus-killed-assoc)
(error "No killed newsgroups"))
(if (not gnus-have-all-newsgroups)
(error
(substitute-command-keys
"Not all newsgroups are displayed. Type \\[gnus-Group-list-all-groups] to display all newsgroups.")))
(let ((buffer-read-only nil)
(group (gnus-Group-group-name)))
(gnus-insert-newsgroup info group)
(beginning-of-line)
(insert (gnus-Group-prepare-line info))
(forward-line -1)
(search-forward ":" nil t)
))
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