1 ;;; gnus-salt.el --- alternate summary mode interfaces for Gnus
2 ;; Copyright (C) 1996,97 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
6 ;; This file is part of GNU Emacs.
8 ;; GNU Emacs is free software; you can redistribute it and/or modify
9 ;; it under the terms of the GNU General Public License as published by
10 ;; the Free Software Foundation; either version 2, or (at your option)
13 ;; GNU Emacs is distributed in the hope that it will be useful,
14 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
15 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 ;; GNU General Public License for more details.
18 ;; You should have received a copy of the GNU General Public License
19 ;; along with GNU Emacs; see the file COPYING. If not, write to the
20 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 ;; Boston, MA 02111-1307, USA.
27 (eval-when-compile (require 'cl))
36 (defvar gnus-pick-mode nil
37 "Minor mode for providing a pick-and-read interface in Gnus summary buffers.")
39 (defcustom gnus-pick-display-summary nil
40 "*Display summary while reading."
42 :group 'gnus-summary-pick)
44 (defcustom gnus-pick-mode-hook nil
45 "Hook run in summary pick mode buffers."
47 :group 'gnus-summary-pick)
49 (defcustom gnus-mark-unpicked-articles-as-read nil
50 "*If non-nil, mark all unpicked articles as read."
52 :group 'gnus-summary-pick)
54 (defcustom gnus-pick-elegant-flow t
55 "If non-nil, gnus-pick-start-reading will run gnus-summary-next-group when no articles have been picked."
57 :group 'gnus-summary-pick)
59 (defcustom gnus-summary-pick-line-format
60 "%-5P %U\%R\%z\%I\%(%[%4L: %-20,20n%]%) %s\n"
61 "*The format specification of the lines in pick buffers.
62 It accepts the same format specs that `gnus-summary-line-format' does."
64 :group 'gnus-summary-pick)
66 ;;; Internal variables.
68 (defvar gnus-pick-mode-map nil)
70 (unless gnus-pick-mode-map
71 (setq gnus-pick-mode-map (make-sparse-keymap))
73 (gnus-define-keys gnus-pick-mode-map
74 "t" gnus-uu-mark-thread
75 "T" gnus-uu-unmark-thread
76 " " gnus-pick-next-page
77 "u" gnus-summary-unmark-as-processable
78 "U" gnus-summary-unmark-all-processable
80 "r" gnus-uu-mark-region
81 "R" gnus-uu-unmark-region
82 "e" gnus-uu-mark-by-regexp
83 "E" gnus-uu-mark-by-regexp
84 "b" gnus-uu-mark-buffer
85 "B" gnus-uu-unmark-buffer
87 gnus-down-mouse-2 gnus-pick-mouse-pick-region
88 ;;gnus-mouse-2 gnus-pick-mouse-pick
89 "X" gnus-pick-start-reading
90 "\r" gnus-pick-start-reading))
92 (defun gnus-pick-make-menu-bar ()
93 (unless (boundp 'gnus-pick-menu)
95 gnus-pick-menu gnus-pick-mode-map ""
98 ["Article" gnus-summary-mark-as-processable t]
99 ["Thread" gnus-uu-mark-thread t]
100 ["Region" gnus-uu-mark-region t]
101 ["Regexp" gnus-uu-mark-regexp t]
102 ["Buffer" gnus-uu-mark-buffer t])
104 ["Article" gnus-summary-unmark-as-processable t]
105 ["Thread" gnus-uu-unmark-thread t]
106 ["Region" gnus-uu-unmark-region t]
107 ["Regexp" gnus-uu-unmark-regexp t]
108 ["Buffer" gnus-uu-unmark-buffer t])
109 ["Start reading" gnus-pick-start-reading t]
110 ["Switch pick mode off" gnus-pick-mode gnus-pick-mode]))))
112 (defun gnus-pick-mode (&optional arg)
113 "Minor mode for providing a pick-and-read interface in Gnus summary buffers.
115 \\{gnus-pick-mode-map}"
117 (when (eq major-mode 'gnus-summary-mode)
118 (if (not (set (make-local-variable 'gnus-pick-mode)
119 (if (null arg) (not gnus-pick-mode)
120 (> (prefix-numeric-value arg) 0))))
121 (remove-hook 'gnus-message-setup-hook 'gnus-pick-setup-message)
122 ;; Make sure that we don't select any articles upon group entry.
123 (set (make-local-variable 'gnus-auto-select-first) nil)
124 ;; Change line format.
125 (setq gnus-summary-line-format gnus-summary-pick-line-format)
126 (setq gnus-summary-line-format-spec nil)
127 (gnus-update-format-specifications nil 'summary)
128 (gnus-update-summary-mark-positions)
129 (add-hook 'gnus-message-setup-hook 'gnus-pick-setup-message)
130 (set (make-local-variable 'gnus-summary-goto-unread) 'never)
132 (when (gnus-visual-p 'pick-menu 'menu)
133 (gnus-pick-make-menu-bar))
134 (gnus-add-minor-mode 'gnus-pick-mode " Pick" gnus-pick-mode-map)
135 (run-hooks 'gnus-pick-mode-hook))))
137 (defun gnus-pick-setup-message ()
138 "Make Message do the right thing on exit."
139 (when (and (gnus-buffer-live-p gnus-summary-buffer)
141 (set-buffer gnus-summary-buffer)
144 '(gnus-configure-windows 'pick t) 'send 'exit 'postpone 'kill)))
146 (defvar gnus-pick-line-number 1)
147 (defun gnus-pick-line-number ()
148 "Return the current line number."
150 (setq gnus-pick-line-number 1)
151 (incf gnus-pick-line-number)))
153 (defun gnus-pick-start-reading (&optional catch-up)
154 "Start reading the picked articles.
155 If given a prefix, mark all unpicked articles as read."
157 (if gnus-newsgroup-processable
159 (gnus-summary-limit-to-articles nil)
160 (when (or catch-up gnus-mark-unpicked-articles-as-read)
161 (gnus-summary-limit-mark-excluded-as-read))
162 (gnus-summary-first-article)
163 (gnus-configure-windows
164 (if gnus-pick-display-summary 'article 'pick) t))
165 (if gnus-pick-elegant-flow
167 (when (or catch-up gnus-mark-unpicked-articles-as-read)
168 (gnus-summary-catchup nil t))
169 (if (gnus-group-quit-config gnus-newsgroup-name)
171 (gnus-summary-next-group)))
172 (error "No articles have been picked"))))
174 (defun gnus-pick-article (&optional arg)
175 "Pick the article on the current line.
176 If ARG, pick the article on that line instead."
181 (goto-char (point-min))
182 (when (zerop (forward-line (1- (prefix-numeric-value arg))))
185 (gnus-error 2 "No such line: %s" arg)
187 (gnus-summary-mark-as-processable 1))
189 (defun gnus-pick-mouse-pick (e)
193 (gnus-summary-mark-as-processable 1)))
195 (defun gnus-pick-mouse-pick-region (start-event)
196 "Pick articles that the mouse is dragged over.
197 This must be bound to a button-down mouse event."
199 (mouse-minibuffer-check start-event)
200 (let* ((echo-keystrokes 0)
201 (start-posn (event-start start-event))
202 (start-point (posn-point start-posn))
203 (start-line (1+ (count-lines 1 start-point)))
204 (start-window (posn-window start-posn))
205 (start-frame (window-frame start-window))
206 (bounds (gnus-window-edges start-window))
208 (bottom (if (window-minibuffer-p start-window)
210 ;; Don't count the mode line.
211 (1- (nth 3 bounds))))
212 (click-count (1- (event-click-count start-event))))
213 (setq mouse-selection-click-count click-count)
214 (setq mouse-selection-click-count-buffer (current-buffer))
215 (mouse-set-point start-event)
216 ;; In case the down click is in the middle of some intangible text,
217 ;; use the end of that text, and put it in START-POINT.
218 (when (< (point) start-point)
219 (goto-char start-point))
221 (setq start-point (point))
222 ;; end-of-range is used only in the single-click case.
223 ;; It is the place where the drag has reached so far
224 ;; (but not outside the window where the drag started).
225 (let (event end end-point last-end-point (end-of-range (point)))
228 (setq event (read-event))
229 (or (mouse-movement-p event)
230 (eq (car-safe event) 'switch-frame)))
231 (if (eq (car-safe event) 'switch-frame)
233 (setq end (event-end event)
234 end-point (posn-point end))
236 (setq last-end-point end-point))
239 ;; Are we moving within the original window?
240 ((and (eq (posn-window end) start-window)
241 (integer-or-marker-p end-point))
242 ;; Go to START-POINT first, so that when we move to END-POINT,
243 ;; if it's in the middle of intangible text,
244 ;; point jumps in the direction away from START-POINT.
245 (goto-char start-point)
246 (goto-char end-point)
248 ;; In case the user moved his mouse really fast, pick
249 ;; articles on the line between this one and the last one.
250 (let* ((this-line (1+ (count-lines 1 end-point)))
251 (min-line (min this-line start-line))
252 (max-line (max this-line start-line)))
253 (while (< min-line max-line)
256 (setq min-line (1+ min-line)))
257 (setq start-line this-line))
258 (when (zerop (% click-count 3))
259 (setq end-of-range (point))))
261 (let ((mouse-row (cdr (cdr (mouse-position)))))
265 (mouse-scroll-subr start-window (- mouse-row top)))
266 ((>= mouse-row bottom)
267 (mouse-scroll-subr start-window
268 (1+ (- mouse-row bottom)))))))))))
270 (let ((fun (key-binding (vector (car event)))))
271 ;; Run the binding of the terminating up-event, if possible.
272 ;; In the case of a multiple click, it gives the wrong results,
273 ;; because it would fail to set up a region.
275 ;; (and (= (mod mouse-selection-click-count 3) 0) (fboundp fun))
276 ;; In this case, we can just let the up-event execute normally.
277 (let ((end (event-end event)))
278 ;; Set the position in the event before we replay it,
279 ;; because otherwise it may have a position in the wrong
281 (setcar (cdr end) end-of-range)
282 ;; Delete the overlay before calling the function,
283 ;; because delete-overlay increases buffer-modified-tick.
284 (push event unread-command-events))))))))
286 (defun gnus-pick-next-page ()
287 "Go to the next page. If at the end of the buffer, start reading articles."
289 (let ((scroll-in-place nil))
292 (end-of-buffer (gnus-pick-start-reading)))))
298 (defvar gnus-binary-mode nil
299 "Minor mode for providing a binary group interface in Gnus summary buffers.")
301 (defvar gnus-binary-mode-hook nil
302 "Hook run in summary binary mode buffers.")
304 (defvar gnus-binary-mode-map nil)
306 (unless gnus-binary-mode-map
307 (setq gnus-binary-mode-map (make-sparse-keymap))
311 "g" gnus-binary-show-article))
313 (defun gnus-binary-make-menu-bar ()
314 (unless (boundp 'gnus-binary-menu)
316 gnus-binary-menu gnus-binary-mode-map ""
318 ["Switch binary mode off" gnus-binary-mode t]))))
320 (defun gnus-binary-mode (&optional arg)
321 "Minor mode for providing a binary group interface in Gnus summary buffers."
323 (when (eq major-mode 'gnus-summary-mode)
324 (make-local-variable 'gnus-binary-mode)
325 (setq gnus-binary-mode
326 (if (null arg) (not gnus-binary-mode)
327 (> (prefix-numeric-value arg) 0)))
328 (when gnus-binary-mode
329 ;; Make sure that we don't select any articles upon group entry.
330 (make-local-variable 'gnus-auto-select-first)
331 (setq gnus-auto-select-first nil)
332 (make-local-variable 'gnus-summary-display-article-function)
333 (setq gnus-summary-display-article-function 'gnus-binary-display-article)
335 (when (gnus-visual-p 'binary-menu 'menu)
336 (gnus-binary-make-menu-bar))
337 (gnus-add-minor-mode 'gnus-binary-mode " Binary" gnus-binary-mode-map)
338 (run-hooks 'gnus-binary-mode-hook))))
340 (defun gnus-binary-display-article (article &optional all-header)
341 "Run ARTICLE through the binary decode functions."
342 (when (gnus-summary-goto-subject article)
343 (let ((gnus-view-pseudos 'automatic))
344 (gnus-uu-decode-uu))))
346 (defun gnus-binary-show-article (&optional arg)
347 "Bypass the binary functions and show the article."
349 (let (gnus-summary-display-article-function)
350 (gnus-summary-show-article arg)))
356 (defcustom gnus-tree-line-format "%(%[%3,3n%]%)"
357 "Format of tree elements."
359 :group 'gnus-summary-tree)
361 (defcustom gnus-tree-minimize-window t
362 "If non-nil, minimize the tree buffer window.
363 If a number, never let the tree buffer grow taller than that number of
366 :group 'gnus-summary-tree)
368 (defcustom gnus-selected-tree-face 'modeline
369 "*Face used for highlighting selected articles in the thread tree."
371 :group 'gnus-summary-tree)
373 (defvar gnus-tree-brackets '((?\[ . ?\]) (?\( . ?\))
374 (?\{ . ?\}) (?< . ?>))
375 "Brackets used in tree nodes.")
377 (defvar gnus-tree-parent-child-edges '(?- ?\\ ?|)
378 "Characters used to connect parents with children.")
380 (defcustom gnus-tree-mode-line-format "Gnus: %%b %S %Z"
381 "*The format specification for the tree mode line."
383 :group 'gnus-summary-tree)
385 (defcustom gnus-generate-tree-function 'gnus-generate-vertical-tree
386 "*Function for generating a thread tree.
387 Two predefined functions are available:
388 `gnus-generate-horizontal-tree' and `gnus-generate-vertical-tree'."
389 :type '(radio (function-item gnus-generate-vertical-tree)
390 (function-item gnus-generate-horizontal-tree)
391 (function :tag "Other" nil))
392 :group 'gnus-summary-tree)
394 (defcustom gnus-tree-mode-hook nil
395 "*Hook run in tree mode buffers."
397 :group 'gnus-summary-tree)
399 ;;; Internal variables.
401 (defvar gnus-tree-line-format-alist
402 `((?n gnus-tmp-name ?s)
403 (?f gnus-tmp-from ?s)
404 (?N gnus-tmp-number ?d)
405 (?\[ gnus-tmp-open-bracket ?c)
406 (?\] gnus-tmp-close-bracket ?c)
407 (?s gnus-tmp-subject ?s)))
409 (defvar gnus-tree-mode-line-format-alist gnus-summary-mode-line-format-alist)
411 (defvar gnus-tree-mode-line-format-spec nil)
412 (defvar gnus-tree-line-format-spec nil)
414 (defvar gnus-tree-node-length nil)
415 (defvar gnus-selected-tree-overlay nil)
417 (defvar gnus-tree-displayed-thread nil)
419 (defvar gnus-tree-mode-map nil)
420 (put 'gnus-tree-mode 'mode-class 'special)
422 (unless gnus-tree-mode-map
423 (setq gnus-tree-mode-map (make-keymap))
424 (suppress-keymap gnus-tree-mode-map)
427 "\r" gnus-tree-select-article
428 gnus-mouse-2 gnus-tree-pick-article
429 "\C-?" gnus-tree-read-summary-keys
430 "h" gnus-tree-show-summary
432 "\C-c\C-i" gnus-info-find-node)
434 (substitute-key-definition
435 'undefined 'gnus-tree-read-summary-keys gnus-tree-mode-map))
437 (defun gnus-tree-make-menu-bar ()
438 (unless (boundp 'gnus-tree-menu)
440 gnus-tree-menu gnus-tree-mode-map ""
442 ["Select article" gnus-tree-select-article t]))))
444 (defun gnus-tree-mode ()
445 "Major mode for displaying thread trees."
447 (gnus-set-format 'tree-mode)
448 (gnus-set-format 'tree t)
449 (when (gnus-visual-p 'tree-menu 'menu)
450 (gnus-tree-make-menu-bar))
451 (kill-all-local-variables)
452 (gnus-simplify-mode-line)
453 (setq mode-name "Tree")
454 (setq major-mode 'gnus-tree-mode)
455 (use-local-map gnus-tree-mode-map)
456 (buffer-disable-undo (current-buffer))
457 (setq buffer-read-only t)
458 (setq truncate-lines t)
460 (gnus-set-work-buffer)
461 (gnus-tree-node-insert (make-mail-header "") nil)
462 (setq gnus-tree-node-length (1- (point))))
463 (run-hooks 'gnus-tree-mode-hook))
465 (defun gnus-tree-read-summary-keys (&optional arg)
466 "Read a summary buffer key sequence and execute it."
468 (let ((buf (current-buffer))
470 (gnus-article-read-summary-keys arg nil t)
471 (when (setq win (get-buffer-window buf))
473 (when gnus-selected-tree-overlay
474 (goto-char (or (gnus-overlay-end gnus-selected-tree-overlay) 1)))
475 (gnus-tree-minimize))))
477 (defun gnus-tree-show-summary ()
478 "Reconfigure windows to show summary buffer."
480 (if (not (gnus-buffer-live-p gnus-summary-buffer))
481 (error "There is no summary buffer for this tree buffer")
482 (gnus-configure-windows 'article)
483 (gnus-summary-goto-subject gnus-current-article)))
485 (defun gnus-tree-select-article (article)
486 "Select the article under point, if any."
487 (interactive (list (gnus-tree-article-number)))
488 (let ((buf (current-buffer)))
491 (set-buffer gnus-summary-buffer)
492 (gnus-summary-goto-article article))
493 (select-window (get-buffer-window buf)))))
495 (defun gnus-tree-pick-article (e)
496 "Select the article under the mouse pointer."
499 (gnus-tree-select-article (gnus-tree-article-number)))
501 (defun gnus-tree-article-number ()
502 (get-text-property (point) 'gnus-number))
504 (defun gnus-tree-article-region (article)
505 "Return a cons with BEG and END of the article region."
506 (let ((pos (text-property-any (point-min) (point-max) 'gnus-number article)))
508 (cons pos (next-single-property-change pos 'gnus-number)))))
510 (defun gnus-tree-goto-article (article)
511 (let ((pos (text-property-any (point-min) (point-max) 'gnus-number article)))
515 (defun gnus-tree-recenter ()
516 "Center point in the tree window."
517 (let ((selected (selected-window))
518 (tree-window (get-buffer-window gnus-tree-buffer t)))
520 (select-window tree-window)
521 (when gnus-selected-tree-overlay
522 (goto-char (or (gnus-overlay-end gnus-selected-tree-overlay) 1)))
523 (let* ((top (cond ((< (window-height) 4) 0)
524 ((< (window-height) 7) 1)
526 (height (1- (window-height)))
527 (bottom (save-excursion (goto-char (point-max))
528 (forward-line (- height))
530 ;; Set the window start to either `bottom', which is the biggest
531 ;; possible valid number, or the second line from the top,
532 ;; whichever is the least.
534 tree-window (min bottom (save-excursion
535 (forward-line (- top)) (point)))))
536 (select-window selected))))
538 (defun gnus-get-tree-buffer ()
539 "Return the tree buffer properly initialized."
541 (set-buffer (get-buffer-create gnus-tree-buffer))
542 (unless (eq major-mode 'gnus-tree-mode)
543 (gnus-add-current-to-buffer-list)
547 (defun gnus-tree-minimize ()
548 (when (and gnus-tree-minimize-window
549 (not (one-window-p)))
552 (walk-windows (lambda (window) (incf windows)))
555 (* window-min-height (1- windows))
557 (let* ((window-min-height 2)
558 (height (count-lines (point-min) (point-max)))
559 (min (max (1- window-min-height) height))
560 (tot (if (numberp gnus-tree-minimize-window)
561 (min gnus-tree-minimize-window min)
563 (win (get-buffer-window (current-buffer)))
564 (wh (and win (1- (window-height win)))))
565 (setq tot (min tot tot-win-height))
568 (let ((selected (selected-window)))
569 (when (ignore-errors (select-window win))
570 (enlarge-window (- tot wh))
571 (select-window selected))))))))
573 ;;; Generating the tree.
575 (defun gnus-tree-node-insert (header sparse &optional adopted)
576 (let* ((dummy (stringp header))
577 (header (if (vectorp header) header
579 (setq header (make-mail-header "*****"))
580 (mail-header-set-number header 0)
581 (mail-header-set-lines header 0)
582 (mail-header-set-chars header 0)
584 (gnus-tmp-from (mail-header-from header))
585 (gnus-tmp-subject (mail-header-subject header))
586 (gnus-tmp-number (mail-header-number header))
589 ((string-match "(.+)" gnus-tmp-from)
590 (substring gnus-tmp-from
591 (1+ (match-beginning 0)) (1- (match-end 0))))
592 ((string-match "<[^>]+> *$" gnus-tmp-from)
593 (let ((beg (match-beginning 0)))
594 (or (and (string-match "^\"[^\"]*\"" gnus-tmp-from)
595 (substring gnus-tmp-from (1+ (match-beginning 0))
597 (substring gnus-tmp-from 0 beg))))
598 ((memq gnus-tmp-number sparse)
601 (gnus-tmp-open-bracket
602 (cond ((memq gnus-tmp-number sparse)
603 (caadr gnus-tree-brackets))
604 (dummy (caaddr gnus-tree-brackets))
605 (adopted (car (nth 3 gnus-tree-brackets)))
606 (t (caar gnus-tree-brackets))))
607 (gnus-tmp-close-bracket
608 (cond ((memq gnus-tmp-number sparse)
609 (cdadr gnus-tree-brackets))
610 (adopted (cdr (nth 3 gnus-tree-brackets)))
612 (cdaddr gnus-tree-brackets))
613 (t (cdar gnus-tree-brackets))))
614 (buffer-read-only nil)
616 (gnus-add-text-properties
618 (setq end (progn (eval gnus-tree-line-format-spec) (point)))
619 (list 'gnus-number gnus-tmp-number))
620 (when (or t (gnus-visual-p 'tree-highlight 'highlight))
621 (gnus-tree-highlight-node gnus-tmp-number beg end))))
623 (defun gnus-tree-highlight-node (article beg end)
624 "Highlight current line according to `gnus-summary-highlight'."
625 (let ((list gnus-summary-highlight)
628 (set-buffer gnus-summary-buffer)
629 (let* ((score (or (cdr (assq article gnus-newsgroup-scored))
630 gnus-summary-default-score 0))
631 (default gnus-summary-default-score)
632 (mark (or (gnus-summary-article-mark article) gnus-unread-mark)))
633 ;; Eval the cars of the lists until we find a match.
635 (not (eval (caar list))))
636 (setq list (cdr list)))))
637 (unless (eq (setq face (cdar list)) (get-text-property beg 'face))
638 (gnus-put-text-property
640 (if (boundp face) (symbol-value face) face)))))
642 (defun gnus-tree-indent (level)
643 (insert (make-string (1- (* (1+ gnus-tree-node-length) level)) ? )))
645 (defvar gnus-tmp-limit)
646 (defvar gnus-tmp-sparse)
647 (defvar gnus-tmp-indent)
649 (defun gnus-generate-tree (thread)
650 "Generate a thread tree for THREAD."
652 (set-buffer (gnus-get-tree-buffer))
653 (let ((buffer-read-only nil)
656 (funcall gnus-generate-tree-function thread 0)
657 (gnus-set-mode-line 'tree)
658 (goto-char (point-min))
661 (let ((selected (selected-window)))
662 (when (get-buffer-window (set-buffer gnus-tree-buffer) t)
663 (select-window (get-buffer-window (set-buffer gnus-tree-buffer) t))
664 (gnus-horizontal-recenter)
665 (select-window selected))))))
667 (defun gnus-generate-horizontal-tree (thread level &optional dummyp adopted)
668 "Generate a horizontal tree."
669 (let* ((dummy (stringp (car thread)))
672 (memq (mail-header-number (car thread))
676 ;; We don't want this article.
677 (setq thread (cdr thread))
679 ;; Not the first article on the line, so we insert a "-".
680 (insert (car gnus-tree-parent-child-edges))
681 ;; If the level isn't zero, then we insert some indentation.
682 (unless (zerop level)
683 (gnus-tree-indent level)
684 (insert (cadr gnus-tree-parent-child-edges))
685 (setq col (- (setq beg (point)) (gnus-point-at-bol) 1))
686 ;; Draw "|" lines upwards.
690 (= (following-char) ? ))
692 (insert (caddr gnus-tree-parent-child-edges)))
695 ;; Insert the article node.
696 (gnus-tree-node-insert (pop thread) gnus-tmp-sparse adopted))
698 ;; End of the thread, so we go to the next line.
701 ;; Recurse downwards in all children of this article.
703 (gnus-generate-horizontal-tree
704 (pop thread) (if do (1+ level) level)
705 (or dummyp dummy) dummy)))))
707 (defsubst gnus-tree-indent-vertical ()
708 (let ((len (- (* (1+ gnus-tree-node-length) gnus-tmp-indent)
709 (- (point) (gnus-point-at-bol)))))
711 (insert (make-string len ? )))))
713 (defsubst gnus-tree-forward-line (n)
714 (while (>= (decf n) 0)
715 (unless (zerop (forward-line 1))
720 (defun gnus-generate-vertical-tree (thread level &optional dummyp adopted)
721 "Generate a vertical tree."
722 (let* ((dummy (stringp (car thread)))
725 (memq (mail-header-number (car thread))
729 ;; We don't want this article.
730 (setq thread (cdr thread))
731 (if (not (save-excursion (beginning-of-line) (bobp)))
732 ;; Not the first article on the line, so we insert a "-".
734 (gnus-tree-indent-vertical)
735 (insert (make-string (/ gnus-tree-node-length 2) ? ))
736 (insert (caddr gnus-tree-parent-child-edges))
737 (gnus-tree-forward-line 1))
738 ;; If the level isn't zero, then we insert some indentation.
739 (unless (zerop gnus-tmp-indent)
740 (gnus-tree-forward-line (1- (* 2 level)))
741 (gnus-tree-indent-vertical)
743 (insert (cadr gnus-tree-parent-child-edges))
746 ;; Draw "-" lines leftwards.
747 (while (= (char-after (1- (point))) ? )
749 (insert (car gnus-tree-parent-child-edges))
752 (gnus-tree-forward-line 1)))
754 ;; Insert the article node.
755 (gnus-tree-indent-vertical)
756 (gnus-tree-node-insert (pop thread) gnus-tmp-sparse adopted)
757 (gnus-tree-forward-line 1))
759 ;; End of the thread, so we go to the next line.
761 (goto-char (point-min))
763 (incf gnus-tmp-indent))
764 ;; Recurse downwards in all children of this article.
766 (gnus-generate-vertical-tree
767 (pop thread) (if do (1+ level) level)
768 (or dummyp dummy) dummy)))))
770 ;;; Interface functions.
772 (defun gnus-possibly-generate-tree (article &optional force)
773 "Generate the thread tree for ARTICLE if it isn't displayed already."
774 (when (save-excursion
775 (set-buffer gnus-summary-buffer)
778 (vectorp (gnus-summary-article-header article))))
780 (let ((top (save-excursion
781 (set-buffer gnus-summary-buffer)
785 (gnus-summary-article-header article))
787 (gnus-tmp-limit gnus-newsgroup-limit)
788 (gnus-tmp-sparse gnus-newsgroup-sparse))
790 (not (eq top gnus-tree-displayed-thread)))
791 (gnus-generate-tree top)
792 (setq gnus-tree-displayed-thread top))))))
794 (defun gnus-tree-open (group)
795 (gnus-get-tree-buffer))
797 (defun gnus-tree-close (group)
798 ;(gnus-kill-buffer gnus-tree-buffer)
801 (defun gnus-highlight-selected-tree (article)
802 "Highlight the selected article in the tree."
803 (let ((buf (current-buffer))
805 (set-buffer gnus-tree-buffer)
806 (when (setq region (gnus-tree-article-region article))
807 (when (or (not gnus-selected-tree-overlay)
808 (gnus-extent-detached-p gnus-selected-tree-overlay))
809 ;; Create a new overlay.
811 (setq gnus-selected-tree-overlay (gnus-make-overlay 1 2))
812 'face gnus-selected-tree-face))
813 ;; Move the overlay to the article.
815 gnus-selected-tree-overlay (goto-char (car region)) (cdr region))
818 (let ((selected (selected-window)))
819 (when (get-buffer-window (set-buffer gnus-tree-buffer) t)
820 (select-window (get-buffer-window (set-buffer gnus-tree-buffer) t))
821 (gnus-horizontal-recenter)
822 (select-window selected))))
823 ;; If we remove this save-excursion, it updates the wrong mode lines?!?
825 (set-buffer gnus-tree-buffer)
826 (gnus-set-mode-line 'tree))
829 (defun gnus-tree-highlight-article (article face)
831 (set-buffer (gnus-get-tree-buffer))
833 (when (setq region (gnus-tree-article-region article))
834 (gnus-put-text-property (car region) (cdr region) 'face face)
836 (get-buffer-window (current-buffer) t) (cdr region))))))
842 (defvar gnus-carpal-group-buffer-buttons
843 '(("next" . gnus-group-next-unread-group)
844 ("prev" . gnus-group-prev-unread-group)
845 ("read" . gnus-group-read-group)
846 ("select" . gnus-group-select-group)
847 ("catch-up" . gnus-group-catchup-current)
848 ("new-news" . gnus-group-get-new-news-this-group)
849 ("toggle-sub" . gnus-group-unsubscribe-current-group)
850 ("subscribe" . gnus-group-unsubscribe-group)
851 ("kill" . gnus-group-kill-group)
852 ("yank" . gnus-group-yank-group)
853 ("describe" . gnus-group-describe-group)
855 ("subscribed" . gnus-group-list-groups)
856 ("all" . gnus-group-list-all-groups)
857 ("killed" . gnus-group-list-killed)
858 ("zombies" . gnus-group-list-zombies)
859 ("matching" . gnus-group-list-matching)
860 ("post" . gnus-group-post-news)
861 ("mail" . gnus-group-mail)
862 ("rescan" . gnus-group-get-new-news)
863 ("browse-foreign" . gnus-group-browse-foreign)
864 ("exit" . gnus-group-exit)))
866 (defvar gnus-carpal-summary-buffer-buttons
868 ("read" . gnus-summary-mark-as-read-forward)
869 ("tick" . gnus-summary-tick-article-forward)
870 ("clear" . gnus-summary-clear-mark-forward)
871 ("expirable" . gnus-summary-mark-as-expirable)
873 ("scroll" . gnus-summary-next-page)
874 ("next-unread" . gnus-summary-next-unread-article)
875 ("prev-unread" . gnus-summary-prev-unread-article)
876 ("first" . gnus-summary-first-unread-article)
877 ("best" . gnus-summary-best-unread-article)
879 ("headers" . gnus-summary-toggle-header)
880 ("uudecode" . gnus-uu-decode-uu)
881 ("enter-digest" . gnus-summary-enter-digest-group)
882 ("fetch-parent" . gnus-summary-refer-parent-article)
884 ("move" . gnus-summary-move-article)
885 ("copy" . gnus-summary-copy-article)
886 ("respool" . gnus-summary-respool-article)
888 ("lower" . gnus-summary-lower-thread)
889 ("kill" . gnus-summary-kill-thread)
891 ("post" . gnus-summary-post-news)
892 ("mail" . gnus-summary-mail)
893 ("followup" . gnus-summary-followup-with-original)
894 ("reply" . gnus-summary-reply-with-original)
895 ("cancel" . gnus-summary-cancel-article)
897 ("exit" . gnus-summary-exit)
898 ("fed-up" . gnus-summary-catchup-and-goto-next-group)))
900 (defvar gnus-carpal-server-buffer-buttons
901 '(("add" . gnus-server-add-server)
902 ("browse" . gnus-server-browse-server)
903 ("list" . gnus-server-list-servers)
904 ("kill" . gnus-server-kill-server)
905 ("yank" . gnus-server-yank-server)
906 ("copy" . gnus-server-copy-server)
907 ("exit" . gnus-server-exit)))
909 (defvar gnus-carpal-browse-buffer-buttons
910 '(("subscribe" . gnus-browse-unsubscribe-current-group)
911 ("exit" . gnus-browse-exit)))
913 (defvar gnus-carpal-group-buffer "*Carpal Group*")
914 (defvar gnus-carpal-summary-buffer "*Carpal Summary*")
915 (defvar gnus-carpal-server-buffer "*Carpal Server*")
916 (defvar gnus-carpal-browse-buffer "*Carpal Browse*")
918 (defvar gnus-carpal-attached-buffer nil)
920 (defvar gnus-carpal-mode-hook nil
921 "*Hook run in carpal mode buffers.")
923 (defvar gnus-carpal-button-face 'bold
924 "*Face used on carpal buttons.")
926 (defvar gnus-carpal-header-face 'bold-italic
927 "*Face used on carpal buffer headers.")
929 (defvar gnus-carpal-mode-map nil)
930 (put 'gnus-carpal-mode 'mode-class 'special)
932 (if gnus-carpal-mode-map
934 (setq gnus-carpal-mode-map (make-keymap))
935 (suppress-keymap gnus-carpal-mode-map)
936 (define-key gnus-carpal-mode-map " " 'gnus-carpal-select)
937 (define-key gnus-carpal-mode-map "\r" 'gnus-carpal-select)
938 (define-key gnus-carpal-mode-map gnus-mouse-2 'gnus-carpal-mouse-select))
940 (defun gnus-carpal-mode ()
941 "Major mode for clicking buttons.
943 All normal editing commands are switched off.
944 \\<gnus-carpal-mode-map>
945 The following commands are available:
947 \\{gnus-carpal-mode-map}"
949 (kill-all-local-variables)
950 (setq mode-line-modified (cdr gnus-mode-line-modified))
951 (setq major-mode 'gnus-carpal-mode)
952 (setq mode-name "Gnus Carpal")
953 (setq mode-line-process nil)
954 (use-local-map gnus-carpal-mode-map)
955 (buffer-disable-undo (current-buffer))
956 (setq buffer-read-only t)
957 (make-local-variable 'gnus-carpal-attached-buffer)
958 (run-hooks 'gnus-carpal-mode-hook))
960 (defun gnus-carpal-setup-buffer (type)
961 (let ((buffer (symbol-value (intern (format "gnus-carpal-%s-buffer" type)))))
962 (if (get-buffer buffer)
965 (set-buffer (get-buffer-create buffer))
967 (setq gnus-carpal-attached-buffer
968 (intern (format "gnus-%s-buffer" type)))
969 (gnus-add-current-to-buffer-list)
970 (let ((buttons (symbol-value
971 (intern (format "gnus-carpal-%s-buffer-buttons"
973 (buffer-read-only nil)
976 (setq button (car buttons)
977 buttons (cdr buttons))
979 (gnus-set-text-properties
981 (prog2 (insert button) (point) (insert " "))
982 (list 'face gnus-carpal-header-face))
983 (gnus-set-text-properties
985 (prog2 (insert (car button)) (point) (insert " "))
986 (list 'gnus-callback (cdr button)
987 'face gnus-carpal-button-face
988 gnus-mouse-face-prop 'highlight))))
989 (let ((fill-column (- (window-width) 2)))
990 (fill-region (point-min) (point-max)))
991 (set-window-point (get-buffer-window (current-buffer))
994 (defun gnus-carpal-select ()
995 "Select the button under point."
997 (let ((func (get-text-property (point) 'gnus-callback)))
1000 (pop-to-buffer (symbol-value gnus-carpal-attached-buffer))
1001 (call-interactively func))))
1003 (defun gnus-carpal-mouse-select (event)
1004 "Select the button under the mouse pointer."
1006 (mouse-set-point event)
1007 (gnus-carpal-select))
1009 ;;; Allow redefinition of functions.
1012 (provide 'gnus-salt)
1014 ;;; gnus-salt.el ends here