1 ;;; gnus-salt.el --- alternate summary mode interfaces for Gnus
2 ;; Copyright (C) 1996,97,98,99 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 ;; Boston, MA 02111-1307, USA.
28 (eval-when-compile (require 'cl))
37 (defvar gnus-pick-mode nil
38 "Minor mode for providing a pick-and-read interface in Gnus summary buffers.")
40 (defcustom gnus-pick-display-summary nil
41 "*Display summary while reading."
43 :group 'gnus-summary-pick)
45 (defcustom gnus-pick-mode-hook nil
46 "Hook run in summary pick mode buffers."
48 :group 'gnus-summary-pick)
50 (defcustom gnus-mark-unpicked-articles-as-read nil
51 "*If non-nil, mark all unpicked articles as read."
53 :group 'gnus-summary-pick)
55 (defcustom gnus-pick-elegant-flow t
56 "If non-nil, `gnus-pick-start-reading' runs `gnus-summary-next-group' when no articles have been picked."
58 :group 'gnus-summary-pick)
60 (defcustom gnus-summary-pick-line-format
61 "%-5P %U\%R\%z\%I\%(%[%4L: %-20,20n%]%) %s\n"
62 "*The format specification of the lines in pick buffers.
63 It accepts the same format specs that `gnus-summary-line-format' does."
65 :group 'gnus-summary-pick)
67 ;;; Internal variables.
69 (defvar gnus-pick-mode-map nil)
71 (unless gnus-pick-mode-map
72 (setq gnus-pick-mode-map (make-sparse-keymap))
74 (gnus-define-keys gnus-pick-mode-map
75 " " gnus-pick-next-page
76 "u" gnus-pick-unmark-article-or-thread
77 "." gnus-pick-article-or-thread
78 gnus-down-mouse-2 gnus-pick-mouse-pick-region
79 "\r" gnus-pick-start-reading))
81 (defun gnus-pick-make-menu-bar ()
82 (unless (boundp 'gnus-pick-menu)
84 gnus-pick-menu gnus-pick-mode-map ""
87 ["Article" gnus-summary-mark-as-processable t]
88 ["Thread" gnus-uu-mark-thread t]
89 ["Region" gnus-uu-mark-region t]
90 ["Regexp" gnus-uu-mark-by-regexp t]
91 ["Buffer" gnus-uu-mark-buffer t])
93 ["Article" gnus-summary-unmark-as-processable t]
94 ["Thread" gnus-uu-unmark-thread t]
95 ["Region" gnus-uu-unmark-region t]
96 ["Regexp" gnus-uu-unmark-by-regexp t]
97 ["Buffer" gnus-summary-unmark-all-processable t])
98 ["Start reading" gnus-pick-start-reading t]
99 ["Switch pick mode off" gnus-pick-mode gnus-pick-mode]))))
101 (defun gnus-pick-mode (&optional arg)
102 "Minor mode for providing a pick-and-read interface in Gnus summary buffers.
104 \\{gnus-pick-mode-map}"
106 (when (eq major-mode 'gnus-summary-mode)
107 (if (not (set (make-local-variable 'gnus-pick-mode)
108 (if (null arg) (not gnus-pick-mode)
109 (> (prefix-numeric-value arg) 0))))
110 (remove-hook 'gnus-message-setup-hook 'gnus-pick-setup-message)
111 ;; Make sure that we don't select any articles upon group entry.
112 (set (make-local-variable 'gnus-auto-select-first) nil)
113 ;; Change line format.
114 (setq gnus-summary-line-format gnus-summary-pick-line-format)
115 (setq gnus-summary-line-format-spec nil)
116 (gnus-update-format-specifications nil 'summary)
117 (gnus-update-summary-mark-positions)
118 (add-hook 'gnus-message-setup-hook 'gnus-pick-setup-message)
119 (set (make-local-variable 'gnus-summary-goto-unread) 'never)
121 (when (gnus-visual-p 'pick-menu 'menu)
122 (gnus-pick-make-menu-bar))
123 (gnus-add-minor-mode 'gnus-pick-mode " Pick" gnus-pick-mode-map
125 (gnus-run-hooks 'gnus-pick-mode-hook))))
127 (defun gnus-pick-setup-message ()
128 "Make Message do the right thing on exit."
129 (when (and (gnus-buffer-live-p gnus-summary-buffer)
131 (set-buffer gnus-summary-buffer)
134 '(gnus-configure-windows ,gnus-current-window-configuration t)
135 'send 'exit 'postpone 'kill)))
137 (defvar gnus-pick-line-number 1)
138 (defun gnus-pick-line-number ()
139 "Return the current line number."
141 (setq gnus-pick-line-number 1)
142 (incf gnus-pick-line-number)))
144 (defun gnus-pick-start-reading (&optional catch-up)
145 "Start reading the picked articles.
146 If given a prefix, mark all unpicked articles as read."
148 (if gnus-newsgroup-processable
150 (gnus-summary-limit-to-articles nil)
151 (when (or catch-up gnus-mark-unpicked-articles-as-read)
152 (gnus-summary-limit-mark-excluded-as-read))
153 (gnus-summary-first-article)
154 (gnus-configure-windows
155 (if gnus-pick-display-summary 'article 'pick) t))
156 (if gnus-pick-elegant-flow
158 (when (or catch-up gnus-mark-unpicked-articles-as-read)
159 (gnus-summary-catchup nil t))
160 (if (gnus-group-quit-config gnus-newsgroup-name)
162 (gnus-summary-next-group)))
163 (error "No articles have been picked"))))
165 (defun gnus-pick-goto-article (arg)
166 "Go to the article number indicated by ARG.
167 If ARG is an invalid article number, then stay on current line."
170 (goto-char (point-min))
171 (when (zerop (forward-line (1- (prefix-numeric-value arg))))
174 (gnus-error 2 "No such line: %s" arg)
177 (defun gnus-pick-article (&optional arg)
178 "Pick the article on the current line.
179 If ARG, pick the article on that line instead."
182 (gnus-pick-goto-article arg))
183 (gnus-summary-mark-as-processable 1))
185 (defun gnus-pick-article-or-thread (&optional arg)
186 "If `gnus-thread-hide-subtree' is t, then pick the thread on the current line.
187 Otherwise pick the article on the current line.
188 If ARG, pick the article/thread on that line instead."
191 (gnus-pick-goto-article arg))
192 (if gnus-thread-hide-subtree
195 (gnus-uu-mark-thread))
197 (gnus-summary-mark-as-processable 1)))
199 (defun gnus-pick-unmark-article-or-thread (&optional arg)
200 "If `gnus-thread-hide-subtree' is t, then unmark the thread on current line.
201 Otherwise unmark the article on current line.
202 If ARG, unmark thread/article on that line instead."
205 (gnus-pick-goto-article arg))
206 (if gnus-thread-hide-subtree
208 (gnus-uu-unmark-thread))
209 (gnus-summary-unmark-as-processable 1)))
211 (defun gnus-pick-mouse-pick (e)
215 (gnus-summary-mark-as-processable 1)))
217 (defun gnus-pick-mouse-pick-region (start-event)
218 "Pick articles that the mouse is dragged over.
219 This must be bound to a button-down mouse event."
221 (mouse-minibuffer-check start-event)
222 (let* ((echo-keystrokes 0)
223 (start-posn (event-start start-event))
224 (start-point (posn-point start-posn))
225 (start-line (1+ (count-lines 1 start-point)))
226 (start-window (posn-window start-posn))
227 (bounds (gnus-window-edges start-window))
229 (bottom (if (window-minibuffer-p start-window)
231 ;; Don't count the mode line.
232 (1- (nth 3 bounds))))
233 (click-count (1- (event-click-count start-event))))
234 (setq mouse-selection-click-count click-count)
235 (setq mouse-selection-click-count-buffer (current-buffer))
236 (mouse-set-point start-event)
237 ;; In case the down click is in the middle of some intangible text,
238 ;; use the end of that text, and put it in START-POINT.
239 (when (< (point) start-point)
240 (goto-char start-point))
242 (setq start-point (point))
243 ;; end-of-range is used only in the single-click case.
244 ;; It is the place where the drag has reached so far
245 ;; (but not outside the window where the drag started).
246 (let (event end end-point (end-of-range (point)))
249 (setq event (cdr (gnus-read-event-char)))
250 (or (mouse-movement-p event)
251 (eq (car-safe event) 'switch-frame)))
252 (if (eq (car-safe event) 'switch-frame)
254 (setq end (event-end event)
255 end-point (posn-point end))
258 ;; Are we moving within the original window?
259 ((and (eq (posn-window end) start-window)
260 (integer-or-marker-p end-point))
261 ;; Go to START-POINT first, so that when we move to END-POINT,
262 ;; if it's in the middle of intangible text,
263 ;; point jumps in the direction away from START-POINT.
264 (goto-char start-point)
265 (goto-char end-point)
267 ;; In case the user moved his mouse really fast, pick
268 ;; articles on the line between this one and the last one.
269 (let* ((this-line (1+ (count-lines 1 end-point)))
270 (min-line (min this-line start-line))
271 (max-line (max this-line start-line)))
272 (while (< min-line max-line)
275 (setq min-line (1+ min-line)))
276 (setq start-line this-line))
277 (when (zerop (% click-count 3))
278 (setq end-of-range (point))))
280 (let ((mouse-row (cdr (cdr (mouse-position)))))
284 (mouse-scroll-subr start-window (- mouse-row top)))
285 ((>= mouse-row bottom)
286 (mouse-scroll-subr start-window
287 (1+ (- mouse-row bottom)))))))))))
289 (let ((fun (key-binding (vector (car event)))))
290 ;; Run the binding of the terminating up-event, if possible.
291 ;; In the case of a multiple click, it gives the wrong results,
292 ;; because it would fail to set up a region.
294 ;; (and (= (mod mouse-selection-click-count 3) 0) (fboundp fun))
295 ;; In this case, we can just let the up-event execute normally.
296 (let ((end (event-end event)))
297 ;; Set the position in the event before we replay it,
298 ;; because otherwise it may have a position in the wrong
300 (setcar (cdr end) end-of-range)
301 ;; Delete the overlay before calling the function,
302 ;; because delete-overlay increases buffer-modified-tick.
303 (push event unread-command-events))))))))
305 (defun gnus-pick-next-page ()
306 "Go to the next page. If at the end of the buffer, start reading articles."
308 (let ((scroll-in-place nil))
311 (end-of-buffer (gnus-pick-start-reading)))))
317 (defvar gnus-binary-mode nil
318 "Minor mode for providing a binary group interface in Gnus summary buffers.")
320 (defvar gnus-binary-mode-hook nil
321 "Hook run in summary binary mode buffers.")
323 (defvar gnus-binary-mode-map nil)
325 (unless gnus-binary-mode-map
326 (setq gnus-binary-mode-map (make-sparse-keymap))
330 "g" gnus-binary-show-article))
332 (defun gnus-binary-make-menu-bar ()
333 (unless (boundp 'gnus-binary-menu)
335 gnus-binary-menu gnus-binary-mode-map ""
337 ["Switch binary mode off" gnus-binary-mode t]))))
339 (defun gnus-binary-mode (&optional arg)
340 "Minor mode for providing a binary group interface in Gnus summary buffers."
342 (when (eq major-mode 'gnus-summary-mode)
343 (make-local-variable 'gnus-binary-mode)
344 (setq gnus-binary-mode
345 (if (null arg) (not gnus-binary-mode)
346 (> (prefix-numeric-value arg) 0)))
347 (when gnus-binary-mode
348 ;; Make sure that we don't select any articles upon group entry.
349 (make-local-variable 'gnus-auto-select-first)
350 (setq gnus-auto-select-first nil)
351 (make-local-variable 'gnus-summary-display-article-function)
352 (setq gnus-summary-display-article-function 'gnus-binary-display-article)
354 (when (gnus-visual-p 'binary-menu 'menu)
355 (gnus-binary-make-menu-bar))
356 (gnus-add-minor-mode 'gnus-binary-mode " Binary"
357 gnus-binary-mode-map nil 'gnus-binary-mode)
358 (gnus-run-hooks 'gnus-binary-mode-hook))))
360 (defun gnus-binary-display-article (article &optional all-header)
361 "Run ARTICLE through the binary decode functions."
362 (when (gnus-summary-goto-subject article)
363 (let ((gnus-view-pseudos 'automatic))
364 (gnus-uu-decode-uu))))
366 (defun gnus-binary-show-article (&optional arg)
367 "Bypass the binary functions and show the article."
369 (let (gnus-summary-display-article-function)
370 (gnus-summary-show-article arg)))
376 (defcustom gnus-tree-line-format "%(%[%3,3n%]%)"
377 "Format of tree elements."
379 :group 'gnus-summary-tree)
381 (defcustom gnus-tree-minimize-window t
382 "If non-nil, minimize the tree buffer window.
383 If a number, never let the tree buffer grow taller than that number of
385 :type '(choice boolean
387 :group 'gnus-summary-tree)
389 (defcustom gnus-selected-tree-face 'modeline
390 "*Face used for highlighting selected articles in the thread tree."
392 :group 'gnus-summary-tree)
394 (defvar gnus-tree-brackets '((?\[ . ?\]) (?\( . ?\))
395 (?\{ . ?\}) (?< . ?>))
396 "Brackets used in tree nodes.")
398 (defvar gnus-tree-parent-child-edges '(?- ?\\ ?|)
399 "Characters used to connect parents with children.")
401 (defcustom gnus-tree-mode-line-format "Gnus: %%b %S %Z"
402 "*The format specification for the tree mode line."
404 :group 'gnus-summary-tree)
406 (defcustom gnus-generate-tree-function 'gnus-generate-vertical-tree
407 "*Function for generating a thread tree.
408 Two predefined functions are available:
409 `gnus-generate-horizontal-tree' and `gnus-generate-vertical-tree'."
410 :type '(radio (function-item gnus-generate-vertical-tree)
411 (function-item gnus-generate-horizontal-tree)
412 (function :tag "Other" nil))
413 :group 'gnus-summary-tree)
415 (defcustom gnus-tree-mode-hook nil
416 "*Hook run in tree mode buffers."
418 :group 'gnus-summary-tree)
420 ;;; Internal variables.
422 (defvar gnus-tree-line-format-alist
423 `((?n gnus-tmp-name ?s)
424 (?f gnus-tmp-from ?s)
425 (?N gnus-tmp-number ?d)
426 (?\[ gnus-tmp-open-bracket ?c)
427 (?\] gnus-tmp-close-bracket ?c)
428 (?s gnus-tmp-subject ?s)))
430 (defvar gnus-tree-mode-line-format-alist gnus-summary-mode-line-format-alist)
432 (defvar gnus-tree-mode-line-format-spec nil)
433 (defvar gnus-tree-line-format-spec nil)
435 (defvar gnus-tree-node-length nil)
436 (defvar gnus-selected-tree-overlay nil)
438 (defvar gnus-tree-displayed-thread nil)
439 (defvar gnus-tree-inhibit nil)
441 (defvar gnus-tree-mode-map nil)
442 (put 'gnus-tree-mode 'mode-class 'special)
444 (unless gnus-tree-mode-map
445 (setq gnus-tree-mode-map (make-keymap))
446 (suppress-keymap gnus-tree-mode-map)
449 "\r" gnus-tree-select-article
450 gnus-mouse-2 gnus-tree-pick-article
451 "\C-?" gnus-tree-read-summary-keys
452 "h" gnus-tree-show-summary
454 "\C-c\C-i" gnus-info-find-node)
456 (substitute-key-definition
457 'undefined 'gnus-tree-read-summary-keys gnus-tree-mode-map))
459 (defun gnus-tree-make-menu-bar ()
460 (unless (boundp 'gnus-tree-menu)
462 gnus-tree-menu gnus-tree-mode-map ""
464 ["Select article" gnus-tree-select-article t]))))
466 (defun gnus-tree-mode ()
467 "Major mode for displaying thread trees."
469 (gnus-set-format 'tree-mode)
470 (gnus-set-format 'tree t)
471 (when (gnus-visual-p 'tree-menu 'menu)
472 (gnus-tree-make-menu-bar))
473 (kill-all-local-variables)
474 (gnus-simplify-mode-line)
475 (setq mode-name "Tree")
476 (setq major-mode 'gnus-tree-mode)
477 (use-local-map gnus-tree-mode-map)
478 (buffer-disable-undo)
479 (setq buffer-read-only t)
480 (setq truncate-lines t)
482 (gnus-set-work-buffer)
483 (gnus-tree-node-insert (make-mail-header "") nil)
484 (setq gnus-tree-node-length (1- (point))))
485 (gnus-run-hooks 'gnus-tree-mode-hook))
487 (defun gnus-tree-read-summary-keys (&optional arg)
488 "Read a summary buffer key sequence and execute it."
490 (unless gnus-tree-inhibit
491 (let ((buf (current-buffer))
492 (gnus-tree-inhibit t)
494 (set-buffer gnus-article-buffer)
495 (gnus-article-read-summary-keys arg nil t)
496 (when (setq win (get-buffer-window buf))
498 (when gnus-selected-tree-overlay
499 (goto-char (or (gnus-overlay-end gnus-selected-tree-overlay) 1)))
500 (gnus-tree-minimize)))))
502 (defun gnus-tree-show-summary ()
503 "Reconfigure windows to show summary buffer."
505 (if (not (gnus-buffer-live-p gnus-summary-buffer))
506 (error "There is no summary buffer for this tree buffer")
507 (gnus-configure-windows 'article)
508 (gnus-summary-goto-subject gnus-current-article)))
510 (defun gnus-tree-select-article (article)
511 "Select the article under point, if any."
512 (interactive (list (gnus-tree-article-number)))
513 (let ((buf (current-buffer)))
516 (set-buffer gnus-summary-buffer)
517 (gnus-summary-goto-article article))
518 (select-window (get-buffer-window buf)))))
520 (defun gnus-tree-pick-article (e)
521 "Select the article under the mouse pointer."
524 (gnus-tree-select-article (gnus-tree-article-number)))
526 (defun gnus-tree-article-number ()
527 (get-text-property (point) 'gnus-number))
529 (defun gnus-tree-article-region (article)
530 "Return a cons with BEG and END of the article region."
531 (let ((pos (text-property-any
532 (point-min) (point-max) 'gnus-number article)))
534 (cons pos (next-single-property-change pos 'gnus-number)))))
536 (defun gnus-tree-goto-article (article)
537 (let ((pos (text-property-any
538 (point-min) (point-max) 'gnus-number article)))
542 (defun gnus-tree-recenter ()
543 "Center point in the tree window."
544 (let ((selected (selected-window))
545 (tree-window (get-buffer-window gnus-tree-buffer t)))
547 (select-window tree-window)
548 (when gnus-selected-tree-overlay
549 (goto-char (or (gnus-overlay-end gnus-selected-tree-overlay) 1)))
550 (let* ((top (cond ((< (window-height) 4) 0)
551 ((< (window-height) 7) 1)
553 (height (1- (window-height)))
554 (bottom (save-excursion (goto-char (point-max))
555 (forward-line (- height))
557 ;; Set the window start to either `bottom', which is the biggest
558 ;; possible valid number, or the second line from the top,
559 ;; whichever is the least.
561 tree-window (min bottom (save-excursion
562 (forward-line (- top)) (point)))))
563 (select-window selected))))
565 (defun gnus-get-tree-buffer ()
566 "Return the tree buffer properly initialized."
568 (set-buffer (gnus-get-buffer-create gnus-tree-buffer))
569 (unless (eq major-mode 'gnus-tree-mode)
573 (defun gnus-tree-minimize ()
574 (when (and gnus-tree-minimize-window
575 (not (one-window-p)))
578 (walk-windows (lambda (window) (incf windows)))
581 (* window-min-height (1- windows))
583 (let* ((window-min-height 2)
584 (height (count-lines (point-min) (point-max)))
585 (min (max (1- window-min-height) height))
586 (tot (if (numberp gnus-tree-minimize-window)
587 (min gnus-tree-minimize-window min)
589 (win (get-buffer-window (current-buffer)))
590 (wh (and win (1- (window-height win)))))
591 (setq tot (min tot tot-win-height))
594 (let ((selected (selected-window)))
595 (when (ignore-errors (select-window win))
596 (enlarge-window (- tot wh))
597 (select-window selected))))))))
599 ;;; Generating the tree.
601 (defun gnus-tree-node-insert (header sparse &optional adopted)
602 (let* ((dummy (stringp header))
603 (header (if (vectorp header) header
605 (setq header (make-mail-header "*****"))
606 (mail-header-set-number header 0)
607 (mail-header-set-lines header 0)
608 (mail-header-set-chars header 0)
610 (gnus-tmp-from (mail-header-from header))
611 (gnus-tmp-subject (mail-header-subject header))
612 (gnus-tmp-number (mail-header-number header))
615 ((string-match "(.+)" gnus-tmp-from)
616 (substring gnus-tmp-from
617 (1+ (match-beginning 0)) (1- (match-end 0))))
618 ((string-match "<[^>]+> *$" gnus-tmp-from)
619 (let ((beg (match-beginning 0)))
620 (or (and (string-match "^\"[^\"]*\"" gnus-tmp-from)
621 (substring gnus-tmp-from (1+ (match-beginning 0))
623 (substring gnus-tmp-from 0 beg))))
624 ((memq gnus-tmp-number sparse)
627 (gnus-tmp-open-bracket
628 (cond ((memq gnus-tmp-number sparse)
629 (caadr gnus-tree-brackets))
630 (dummy (caaddr gnus-tree-brackets))
631 (adopted (car (nth 3 gnus-tree-brackets)))
632 (t (caar gnus-tree-brackets))))
633 (gnus-tmp-close-bracket
634 (cond ((memq gnus-tmp-number sparse)
635 (cdadr gnus-tree-brackets))
636 (adopted (cdr (nth 3 gnus-tree-brackets)))
638 (cdaddr gnus-tree-brackets))
639 (t (cdar gnus-tree-brackets))))
640 (buffer-read-only nil)
642 (gnus-add-text-properties
644 (setq end (progn (eval gnus-tree-line-format-spec) (point)))
645 (list 'gnus-number gnus-tmp-number))
646 (when (or t (gnus-visual-p 'tree-highlight 'highlight))
647 (gnus-tree-highlight-node gnus-tmp-number beg end))))
649 (defun gnus-tree-highlight-node (article beg end)
650 "Highlight current line according to `gnus-summary-highlight'."
651 (let ((list gnus-summary-highlight)
654 (set-buffer gnus-summary-buffer)
655 (let* ((score (or (cdr (assq article gnus-newsgroup-scored))
656 gnus-summary-default-score 0))
657 (default gnus-summary-default-score)
658 (mark (or (gnus-summary-article-mark article) gnus-unread-mark)))
659 ;; Eval the cars of the lists until we find a match.
661 (not (eval (caar list))))
662 (setq list (cdr list)))))
663 (unless (eq (setq face (cdar list)) (get-text-property beg 'face))
664 (gnus-put-text-property-excluding-characters-with-faces
666 (if (boundp face) (symbol-value face) face)))))
668 (defun gnus-tree-indent (level)
669 (insert (make-string (1- (* (1+ gnus-tree-node-length) level)) ? )))
671 (defvar gnus-tmp-limit)
672 (defvar gnus-tmp-sparse)
673 (defvar gnus-tmp-indent)
675 (defun gnus-generate-tree (thread)
676 "Generate a thread tree for THREAD."
678 (set-buffer (gnus-get-tree-buffer))
679 (let ((buffer-read-only nil)
682 (funcall gnus-generate-tree-function thread 0)
683 (gnus-set-mode-line 'tree)
684 (goto-char (point-min))
687 (let ((selected (selected-window)))
688 (when (get-buffer-window (set-buffer gnus-tree-buffer) t)
689 (select-window (get-buffer-window (set-buffer gnus-tree-buffer) t))
690 (gnus-horizontal-recenter)
691 (select-window selected))))))
693 (defun gnus-generate-horizontal-tree (thread level &optional dummyp adopted)
694 "Generate a horizontal tree."
695 (let* ((dummy (stringp (car thread)))
698 (memq (mail-header-number (car thread))
702 ;; We don't want this article.
703 (setq thread (cdr thread))
705 ;; Not the first article on the line, so we insert a "-".
706 (insert (car gnus-tree-parent-child-edges))
707 ;; If the level isn't zero, then we insert some indentation.
708 (unless (zerop level)
709 (gnus-tree-indent level)
710 (insert (cadr gnus-tree-parent-child-edges))
711 (setq col (- (setq beg (point)) (gnus-point-at-bol) 1))
712 ;; Draw "|" lines upwards.
716 (eq (char-after) ? ))
718 (insert (caddr gnus-tree-parent-child-edges)))
721 ;; Insert the article node.
722 (gnus-tree-node-insert (pop thread) gnus-tmp-sparse adopted))
724 ;; End of the thread, so we go to the next line.
727 ;; Recurse downwards in all children of this article.
729 (gnus-generate-horizontal-tree
730 (pop thread) (if do (1+ level) level)
731 (or dummyp dummy) dummy)))))
733 (defsubst gnus-tree-indent-vertical ()
734 (let ((len (- (* (1+ gnus-tree-node-length) gnus-tmp-indent)
735 (- (point) (gnus-point-at-bol)))))
737 (insert (make-string len ? )))))
739 (defsubst gnus-tree-forward-line (n)
740 (while (>= (decf n) 0)
741 (unless (zerop (forward-line 1))
746 (defun gnus-generate-vertical-tree (thread level &optional dummyp adopted)
747 "Generate a vertical tree."
748 (let* ((dummy (stringp (car thread)))
751 (memq (mail-header-number (car thread))
755 ;; We don't want this article.
756 (setq thread (cdr thread))
757 (if (not (save-excursion (beginning-of-line) (bobp)))
758 ;; Not the first article on the line, so we insert a "-".
760 (gnus-tree-indent-vertical)
761 (insert (make-string (/ gnus-tree-node-length 2) ? ))
762 (insert (caddr gnus-tree-parent-child-edges))
763 (gnus-tree-forward-line 1))
764 ;; If the level isn't zero, then we insert some indentation.
765 (unless (zerop gnus-tmp-indent)
766 (gnus-tree-forward-line (1- (* 2 level)))
767 (gnus-tree-indent-vertical)
769 (insert (cadr gnus-tree-parent-child-edges))
772 ;; Draw "-" lines leftwards.
773 (while (and (> (point) 1)
774 (eq (char-after (1- (point))) ? ))
776 (insert (car gnus-tree-parent-child-edges))
779 (gnus-tree-forward-line 1)))
781 ;; Insert the article node.
782 (gnus-tree-indent-vertical)
783 (gnus-tree-node-insert (pop thread) gnus-tmp-sparse adopted)
784 (gnus-tree-forward-line 1))
786 ;; End of the thread, so we go to the next line.
788 (goto-char (point-min))
790 (incf gnus-tmp-indent))
791 ;; Recurse downwards in all children of this article.
793 (gnus-generate-vertical-tree
794 (pop thread) (if do (1+ level) level)
795 (or dummyp dummy) dummy)))))
797 ;;; Interface functions.
799 (defun gnus-possibly-generate-tree (article &optional force)
800 "Generate the thread tree for ARTICLE if it isn't displayed already."
801 (when (save-excursion
802 (set-buffer gnus-summary-buffer)
805 (vectorp (gnus-summary-article-header article))))
807 (let ((top (save-excursion
808 (set-buffer gnus-summary-buffer)
812 (gnus-summary-article-header article))
814 (gnus-tmp-limit gnus-newsgroup-limit)
815 (gnus-tmp-sparse gnus-newsgroup-sparse))
817 (not (eq top gnus-tree-displayed-thread)))
818 (gnus-generate-tree top)
819 (setq gnus-tree-displayed-thread top))))))
821 (defun gnus-tree-open (group)
822 (gnus-get-tree-buffer))
824 (defun gnus-tree-close (group)
825 (gnus-kill-buffer gnus-tree-buffer))
827 (defun gnus-highlight-selected-tree (article)
828 "Highlight the selected article in the tree."
829 (let ((buf (current-buffer))
831 (set-buffer gnus-tree-buffer)
832 (when (setq region (gnus-tree-article-region article))
833 (when (or (not gnus-selected-tree-overlay)
834 (gnus-extent-detached-p gnus-selected-tree-overlay))
835 ;; Create a new overlay.
837 (setq gnus-selected-tree-overlay (gnus-make-overlay 1 2))
838 'face gnus-selected-tree-face))
839 ;; Move the overlay to the article.
841 gnus-selected-tree-overlay (goto-char (car region)) (cdr region))
844 (let ((selected (selected-window)))
845 (when (get-buffer-window (set-buffer gnus-tree-buffer) t)
846 (select-window (get-buffer-window (set-buffer gnus-tree-buffer) t))
847 (gnus-horizontal-recenter)
848 (select-window selected))))
849 ;; If we remove this save-excursion, it updates the wrong mode lines?!?
851 (set-buffer gnus-tree-buffer)
852 (gnus-set-mode-line 'tree))
855 (defun gnus-tree-highlight-article (article face)
857 (set-buffer (gnus-get-tree-buffer))
859 (when (setq region (gnus-tree-article-region article))
860 (gnus-put-text-property (car region) (cdr region) 'face face)
862 (get-buffer-window (current-buffer) t) (cdr region))))))
868 (defvar gnus-carpal-group-buffer-buttons
869 '(("next" . gnus-group-next-unread-group)
870 ("prev" . gnus-group-prev-unread-group)
871 ("read" . gnus-group-read-group)
872 ("select" . gnus-group-select-group)
873 ("catch-up" . gnus-group-catchup-current)
874 ("new-news" . gnus-group-get-new-news-this-group)
875 ("toggle-sub" . gnus-group-unsubscribe-current-group)
876 ("subscribe" . gnus-group-unsubscribe-group)
877 ("kill" . gnus-group-kill-group)
878 ("yank" . gnus-group-yank-group)
879 ("describe" . gnus-group-describe-group)
881 ("subscribed" . gnus-group-list-groups)
882 ("all" . gnus-group-list-all-groups)
883 ("killed" . gnus-group-list-killed)
884 ("zombies" . gnus-group-list-zombies)
885 ("matching" . gnus-group-list-matching)
886 ("post" . gnus-group-post-news)
887 ("mail" . gnus-group-mail)
888 ("rescan" . gnus-group-get-new-news)
889 ("browse-foreign" . gnus-group-browse-foreign)
890 ("exit" . gnus-group-exit)))
892 (defvar gnus-carpal-summary-buffer-buttons
894 ("read" . gnus-summary-mark-as-read-forward)
895 ("tick" . gnus-summary-tick-article-forward)
896 ("clear" . gnus-summary-clear-mark-forward)
897 ("expirable" . gnus-summary-mark-as-expirable)
899 ("scroll" . gnus-summary-next-page)
900 ("next-unread" . gnus-summary-next-unread-article)
901 ("prev-unread" . gnus-summary-prev-unread-article)
902 ("first" . gnus-summary-first-unread-article)
903 ("best" . gnus-summary-best-unread-article)
905 ("headers" . gnus-summary-toggle-header)
906 ("uudecode" . gnus-uu-decode-uu)
907 ("enter-digest" . gnus-summary-enter-digest-group)
908 ("fetch-parent" . gnus-summary-refer-parent-article)
910 ("move" . gnus-summary-move-article)
911 ("copy" . gnus-summary-copy-article)
912 ("respool" . gnus-summary-respool-article)
914 ("lower" . gnus-summary-lower-thread)
915 ("kill" . gnus-summary-kill-thread)
917 ("post" . gnus-summary-post-news)
918 ("mail" . gnus-summary-mail)
919 ("followup" . gnus-summary-followup-with-original)
920 ("reply" . gnus-summary-reply-with-original)
921 ("cancel" . gnus-summary-cancel-article)
923 ("exit" . gnus-summary-exit)
924 ("fed-up" . gnus-summary-catchup-and-goto-next-group)))
926 (defvar gnus-carpal-server-buffer-buttons
927 '(("add" . gnus-server-add-server)
928 ("browse" . gnus-server-browse-server)
929 ("list" . gnus-server-list-servers)
930 ("kill" . gnus-server-kill-server)
931 ("yank" . gnus-server-yank-server)
932 ("copy" . gnus-server-copy-server)
933 ("exit" . gnus-server-exit)))
935 (defvar gnus-carpal-browse-buffer-buttons
936 '(("subscribe" . gnus-browse-unsubscribe-current-group)
937 ("exit" . gnus-browse-exit)))
939 (defvar gnus-carpal-group-buffer "*Carpal Group*")
940 (defvar gnus-carpal-summary-buffer "*Carpal Summary*")
941 (defvar gnus-carpal-server-buffer "*Carpal Server*")
942 (defvar gnus-carpal-browse-buffer "*Carpal Browse*")
944 (defvar gnus-carpal-attached-buffer nil)
946 (defvar gnus-carpal-mode-hook nil
947 "*Hook run in carpal mode buffers.")
949 (defvar gnus-carpal-button-face 'bold
950 "*Face used on carpal buttons.")
952 (defvar gnus-carpal-header-face 'bold-italic
953 "*Face used on carpal buffer headers.")
955 (defvar gnus-carpal-mode-map nil)
956 (put 'gnus-carpal-mode 'mode-class 'special)
958 (if gnus-carpal-mode-map
960 (setq gnus-carpal-mode-map (make-keymap))
961 (suppress-keymap gnus-carpal-mode-map)
962 (define-key gnus-carpal-mode-map " " 'gnus-carpal-select)
963 (define-key gnus-carpal-mode-map "\r" 'gnus-carpal-select)
964 (define-key gnus-carpal-mode-map gnus-mouse-2 'gnus-carpal-mouse-select))
966 (defun gnus-carpal-mode ()
967 "Major mode for clicking buttons.
969 All normal editing commands are switched off.
970 \\<gnus-carpal-mode-map>
971 The following commands are available:
973 \\{gnus-carpal-mode-map}"
975 (kill-all-local-variables)
976 (setq mode-line-modified (cdr gnus-mode-line-modified))
977 (setq major-mode 'gnus-carpal-mode)
978 (setq mode-name "Gnus Carpal")
979 (setq mode-line-process nil)
980 (use-local-map gnus-carpal-mode-map)
981 (buffer-disable-undo)
982 (setq buffer-read-only t)
983 (make-local-variable 'gnus-carpal-attached-buffer)
984 (gnus-run-hooks 'gnus-carpal-mode-hook))
986 (defun gnus-carpal-setup-buffer (type)
987 (let ((buffer (symbol-value (intern (format "gnus-carpal-%s-buffer" type)))))
988 (if (get-buffer buffer)
991 (set-buffer (gnus-get-buffer-create buffer))
993 (setq gnus-carpal-attached-buffer
994 (intern (format "gnus-%s-buffer" type)))
995 (let ((buttons (symbol-value
996 (intern (format "gnus-carpal-%s-buffer-buttons"
998 (buffer-read-only nil)
1001 (setq button (car buttons)
1002 buttons (cdr buttons))
1003 (if (stringp button)
1004 (gnus-set-text-properties
1006 (prog2 (insert button) (point) (insert " "))
1007 (list 'face gnus-carpal-header-face))
1008 (gnus-set-text-properties
1010 (prog2 (insert (car button)) (point) (insert " "))
1011 (list 'gnus-callback (cdr button)
1012 'face gnus-carpal-button-face
1013 gnus-mouse-face-prop 'highlight))))
1014 (let ((fill-column (- (window-width) 2)))
1015 (fill-region (point-min) (point-max)))
1016 (set-window-point (get-buffer-window (current-buffer))
1019 (defun gnus-carpal-select ()
1020 "Select the button under point."
1022 (let ((func (get-text-property (point) 'gnus-callback)))
1025 (pop-to-buffer (symbol-value gnus-carpal-attached-buffer))
1026 (call-interactively func))))
1028 (defun gnus-carpal-mouse-select (event)
1029 "Select the button under the mouse pointer."
1031 (mouse-set-point event)
1032 (gnus-carpal-select))
1034 ;;; Allow redefinition of functions.
1037 (provide 'gnus-salt)
1039 ;;; gnus-salt.el ends here