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.
34 (defvar gnus-pick-mode nil
35 "Minor mode for providing a pick-and-read interface in Gnus summary buffers.")
37 (defcustom gnus-pick-display-summary nil
38 "*Display summary while reading."
40 :group 'gnus-summary-pick)
42 (defcustom gnus-pick-mode-hook nil
43 "Hook run in summary pick mode buffers."
45 :group 'gnus-summary-pick)
47 (defcustom gnus-mark-unpicked-articles-as-read nil
48 "*If non-nil, mark all unpicked articles as read."
50 :group 'gnus-summary-pick)
52 (defcustom gnus-pick-elegant-flow t
53 "If non-nil, gnus-pick-start-reading will run gnus-summary-next-group when no articles have been picked."
55 :group 'gnus-summary-pick)
57 (defcustom gnus-summary-pick-line-format
58 "%-5P %U\%R\%z\%I\%(%[%4L: %-20,20n%]%) %s\n"
59 "*The format specification of the lines in pick buffers.
60 It accepts the same format specs that `gnus-summary-line-format' does."
62 :group 'gnus-summary-pick)
64 ;;; Internal variables.
66 (defvar gnus-pick-mode-map nil)
68 (unless gnus-pick-mode-map
69 (setq gnus-pick-mode-map (make-sparse-keymap))
73 "t" gnus-uu-mark-thread
74 "T" gnus-uu-unmark-thread
75 " " gnus-pick-next-page
76 "u" gnus-summary-unmark-as-processable
77 "U" gnus-summary-unmark-all-processable
79 "r" gnus-uu-mark-region
80 "R" gnus-uu-unmark-region
81 "e" gnus-uu-mark-by-regexp
82 "E" gnus-uu-mark-by-regexp
83 "b" gnus-uu-mark-buffer
84 "B" gnus-uu-unmark-buffer
86 gnus-down-mouse-2 gnus-pick-mouse-pick-region
87 ;;gnus-mouse-2 gnus-pick-mouse-pick
88 "X" gnus-pick-start-reading
89 "\r" gnus-pick-start-reading))
91 (defun gnus-pick-make-menu-bar ()
92 (unless (boundp 'gnus-pick-menu)
94 gnus-pick-menu gnus-pick-mode-map ""
97 ["Article" gnus-summary-mark-as-processable t]
98 ["Thread" gnus-uu-mark-thread t]
99 ["Region" gnus-uu-mark-region t]
100 ["Regexp" gnus-uu-mark-regexp t]
101 ["Buffer" gnus-uu-mark-buffer t])
103 ["Article" gnus-summary-unmark-as-processable t]
104 ["Thread" gnus-uu-unmark-thread t]
105 ["Region" gnus-uu-unmark-region t]
106 ["Regexp" gnus-uu-unmark-regexp t]
107 ["Buffer" gnus-uu-unmark-buffer t])
108 ["Start reading" gnus-pick-start-reading t]
109 ["Switch pick mode off" gnus-pick-mode gnus-pick-mode]))))
111 (defun gnus-pick-mode (&optional arg)
112 "Minor mode for providing a pick-and-read interface in Gnus summary buffers.
114 \\{gnus-pick-mode-map}"
116 (when (eq major-mode 'gnus-summary-mode)
117 (if (not (set (make-local-variable 'gnus-pick-mode)
118 (if (null arg) (not gnus-pick-mode)
119 (> (prefix-numeric-value arg) 0))))
120 (remove-hook 'gnus-message-setup-hook 'gnus-pick-setup-message)
121 ;; Make sure that we don't select any articles upon group entry.
122 (set (make-local-variable 'gnus-auto-select-first) nil)
123 ;; Change line format.
124 (setq gnus-summary-line-format gnus-summary-pick-line-format)
125 (setq gnus-summary-line-format-spec nil)
126 (gnus-update-format-specifications nil 'summary)
127 (gnus-update-summary-mark-positions)
128 (add-hook 'gnus-message-setup-hook 'gnus-pick-setup-message)
129 (set (make-local-variable 'gnus-summary-goto-unread) 'never)
131 (when (gnus-visual-p 'pick-menu 'menu)
132 (gnus-pick-make-menu-bar))
133 (gnus-add-minor-mode 'gnus-pick-mode " Pick" gnus-pick-mode-map)
134 (run-hooks 'gnus-pick-mode-hook))))
136 (defun gnus-pick-setup-message ()
137 "Make Message do the right thing on exit."
138 (when (and (gnus-buffer-live-p gnus-summary-buffer)
140 (set-buffer gnus-summary-buffer)
143 '(gnus-configure-windows 'pick t) 'send 'exit 'postpone 'kill)))
145 (defvar gnus-pick-line-number 1)
146 (defun gnus-pick-line-number ()
147 "Return the current line number."
149 (setq gnus-pick-line-number 1)
150 (incf gnus-pick-line-number)))
152 (defun gnus-pick-start-reading (&optional catch-up)
153 "Start reading the picked articles.
154 If given a prefix, mark all unpicked articles as read."
156 (if gnus-newsgroup-processable
158 (gnus-summary-limit-to-articles nil)
159 (when (or catch-up gnus-mark-unpicked-articles-as-read)
160 (gnus-summary-limit-mark-excluded-as-read))
161 (gnus-summary-first-article)
162 (gnus-configure-windows
163 (if gnus-pick-display-summary 'article 'pick) t))
164 (if gnus-pick-elegant-flow
166 (when (or catch-up gnus-mark-unpicked-articles-as-read)
167 (gnus-summary-catchup nil t))
168 (if (gnus-group-quit-config gnus-newsgroup-name)
170 (gnus-summary-next-group)))
171 (error "No articles have been picked"))))
173 (defun gnus-pick-article (&optional arg)
174 "Pick the article on the current line.
175 If ARG, pick the article on that line instead."
180 (goto-char (point-min))
181 (when (zerop (forward-line (1- (prefix-numeric-value arg))))
184 (gnus-error 2 "No such line: %s" arg)
186 (gnus-summary-mark-as-processable 1))
188 (defun gnus-pick-mouse-pick (e)
192 (gnus-summary-mark-as-processable 1)))
194 (defun gnus-pick-mouse-pick-region (start-event)
195 "Pick articles that the mouse is dragged over.
196 This must be bound to a button-down mouse event."
198 (mouse-minibuffer-check start-event)
199 (let* ((echo-keystrokes 0)
200 (start-posn (event-start start-event))
201 (start-point (posn-point start-posn))
202 (start-line (1+ (count-lines 1 start-point)))
203 (start-window (posn-window start-posn))
204 (start-frame (window-frame start-window))
205 (bounds (window-edges start-window))
207 (bottom (if (window-minibuffer-p start-window)
209 ;; Don't count the mode line.
210 (1- (nth 3 bounds))))
211 (click-count (1- (event-click-count start-event))))
212 (setq mouse-selection-click-count click-count)
213 (setq mouse-selection-click-count-buffer (current-buffer))
214 (mouse-set-point start-event)
215 ;; In case the down click is in the middle of some intangible text,
216 ;; use the end of that text, and put it in START-POINT.
217 (when (< (point) start-point)
218 (goto-char start-point))
220 (setq start-point (point))
221 ;; end-of-range is used only in the single-click case.
222 ;; It is the place where the drag has reached so far
223 ;; (but not outside the window where the drag started).
224 (let (event end end-point last-end-point (end-of-range (point)))
227 (setq event (read-event))
228 (or (mouse-movement-p event)
229 (eq (car-safe event) 'switch-frame)))
230 (if (eq (car-safe event) 'switch-frame)
232 (setq end (event-end event)
233 end-point (posn-point end))
235 (setq last-end-point end-point))
238 ;; Are we moving within the original window?
239 ((and (eq (posn-window end) start-window)
240 (integer-or-marker-p end-point))
241 ;; Go to START-POINT first, so that when we move to END-POINT,
242 ;; if it's in the middle of intangible text,
243 ;; point jumps in the direction away from START-POINT.
244 (goto-char start-point)
245 (goto-char end-point)
247 ;; In case the user moved his mouse really fast, pick
248 ;; articles on the line between this one and the last one.
249 (let* ((this-line (1+ (count-lines 1 end-point)))
250 (min-line (min this-line start-line))
251 (max-line (max this-line start-line)))
252 (while (< min-line max-line)
255 (setq min-line (1+ min-line)))
256 (setq start-line this-line))
257 (when (zerop (% click-count 3))
258 (setq end-of-range (point))))
260 (let ((mouse-row (cdr (cdr (mouse-position)))))
264 (mouse-scroll-subr start-window (- mouse-row top)))
265 ((>= mouse-row bottom)
266 (mouse-scroll-subr start-window
267 (1+ (- mouse-row bottom)))))))))))
269 (let ((fun (key-binding (vector (car event)))))
270 ;; Run the binding of the terminating up-event, if possible.
271 ;; In the case of a multiple click, it gives the wrong results,
272 ;; because it would fail to set up a region.
274 ;; (and (= (mod mouse-selection-click-count 3) 0) (fboundp fun))
275 ;; In this case, we can just let the up-event execute normally.
276 (let ((end (event-end event)))
277 ;; Set the position in the event before we replay it,
278 ;; because otherwise it may have a position in the wrong
280 (setcar (cdr end) end-of-range)
281 ;; Delete the overlay before calling the function,
282 ;; because delete-overlay increases buffer-modified-tick.
283 (push event unread-command-events))))))))
285 (defun gnus-pick-next-page ()
286 "Go to the next page. If at the end of the buffer, start reading articles."
288 (let ((scroll-in-place nil))
291 (end-of-buffer (gnus-pick-start-reading)))))
297 (defvar gnus-binary-mode nil
298 "Minor mode for providing a binary group interface in Gnus summary buffers.")
300 (defvar gnus-binary-mode-hook nil
301 "Hook run in summary binary mode buffers.")
303 (defvar gnus-binary-mode-map nil)
305 (unless gnus-binary-mode-map
306 (setq gnus-binary-mode-map (make-sparse-keymap))
310 "g" gnus-binary-show-article))
312 (defun gnus-binary-make-menu-bar ()
313 (unless (boundp 'gnus-binary-menu)
315 gnus-binary-menu gnus-binary-mode-map ""
317 ["Switch binary mode off" gnus-binary-mode t]))))
319 (defun gnus-binary-mode (&optional arg)
320 "Minor mode for providing a binary group interface in Gnus summary buffers."
322 (when (eq major-mode 'gnus-summary-mode)
323 (make-local-variable 'gnus-binary-mode)
324 (setq gnus-binary-mode
325 (if (null arg) (not gnus-binary-mode)
326 (> (prefix-numeric-value arg) 0)))
327 (when gnus-binary-mode
328 ;; Make sure that we don't select any articles upon group entry.
329 (make-local-variable 'gnus-auto-select-first)
330 (setq gnus-auto-select-first nil)
331 (make-local-variable 'gnus-summary-display-article-function)
332 (setq gnus-summary-display-article-function 'gnus-binary-display-article)
334 (when (gnus-visual-p 'binary-menu 'menu)
335 (gnus-binary-make-menu-bar))
336 (gnus-add-minor-mode 'gnus-binary-mode " Binary" gnus-binary-mode-map)
337 (run-hooks 'gnus-binary-mode-hook))))
339 (defun gnus-binary-display-article (article &optional all-header)
340 "Run ARTICLE through the binary decode functions."
341 (when (gnus-summary-goto-subject article)
342 (let ((gnus-view-pseudos 'automatic))
343 (gnus-uu-decode-uu))))
345 (defun gnus-binary-show-article (&optional arg)
346 "Bypass the binary functions and show the article."
348 (let (gnus-summary-display-article-function)
349 (gnus-summary-show-article arg)))
355 (defcustom gnus-tree-line-format "%(%[%3,3n%]%)"
356 "Format of tree elements."
358 :group 'gnus-summary-tree)
360 (defcustom gnus-tree-minimize-window t
361 "If non-nil, minimize the tree buffer window.
362 If a number, never let the tree buffer grow taller than that number of
365 :group 'gnus-summary-tree)
367 (defcustom gnus-selected-tree-face 'modeline
368 "*Face used for highlighting selected articles in the thread tree."
370 :group 'gnus-summary-tree)
372 (defvar gnus-tree-brackets '((?\[ . ?\]) (?\( . ?\))
373 (?\{ . ?\}) (?< . ?>))
374 "Brackets used in tree nodes.")
376 (defvar gnus-tree-parent-child-edges '(?- ?\\ ?|)
377 "Characters used to connect parents with children.")
379 (defcustom gnus-tree-mode-line-format "Gnus: %%b %S %Z"
380 "*The format specification for the tree mode line."
382 :group 'gnus-summary-tree)
384 (defcustom gnus-generate-tree-function 'gnus-generate-vertical-tree
385 "*Function for generating a thread tree.
386 Two predefined functions are available:
387 `gnus-generate-horizontal-tree' and `gnus-generate-vertical-tree'."
388 :type '(radio (function-item gnus-generate-vertical-tree)
389 (function-item gnus-generate-horizontal-tree)
390 (function :tag "Other" nil))
391 :group 'gnus-summary-tree)
393 (defcustom gnus-tree-mode-hook nil
394 "*Hook run in tree mode buffers."
396 :group 'gnus-summary-tree)
398 ;;; Internal variables.
400 (defvar gnus-tree-line-format-alist
401 `((?n gnus-tmp-name ?s)
402 (?f gnus-tmp-from ?s)
403 (?N gnus-tmp-number ?d)
404 (?\[ gnus-tmp-open-bracket ?c)
405 (?\] gnus-tmp-close-bracket ?c)
406 (?s gnus-tmp-subject ?s)))
408 (defvar gnus-tree-mode-line-format-alist gnus-summary-mode-line-format-alist)
410 (defvar gnus-tree-mode-line-format-spec nil)
411 (defvar gnus-tree-line-format-spec nil)
413 (defvar gnus-tree-node-length nil)
414 (defvar gnus-selected-tree-overlay nil)
416 (defvar gnus-tree-displayed-thread nil)
418 (defvar gnus-tree-mode-map nil)
419 (put 'gnus-tree-mode 'mode-class 'special)
421 (unless gnus-tree-mode-map
422 (setq gnus-tree-mode-map (make-keymap))
423 (suppress-keymap gnus-tree-mode-map)
426 "\r" gnus-tree-select-article
427 gnus-mouse-2 gnus-tree-pick-article
428 "\C-?" gnus-tree-read-summary-keys
429 "h" gnus-tree-show-summary
431 "\C-c\C-i" gnus-info-find-node)
433 (substitute-key-definition
434 'undefined 'gnus-tree-read-summary-keys gnus-tree-mode-map))
436 (defun gnus-tree-make-menu-bar ()
437 (unless (boundp 'gnus-tree-menu)
439 gnus-tree-menu gnus-tree-mode-map ""
441 ["Select article" gnus-tree-select-article t]))))
443 (defun gnus-tree-mode ()
444 "Major mode for displaying thread trees."
446 (setq gnus-tree-mode-line-format-spec
447 (gnus-parse-format gnus-tree-mode-line-format
448 gnus-summary-mode-line-format-alist))
449 (setq gnus-tree-line-format-spec
450 (gnus-parse-format gnus-tree-line-format
451 gnus-tree-line-format-alist t))
452 (when (gnus-visual-p 'tree-menu 'menu)
453 (gnus-tree-make-menu-bar))
454 (kill-all-local-variables)
455 (gnus-simplify-mode-line)
456 (setq mode-name "Tree")
457 (setq major-mode 'gnus-tree-mode)
458 (use-local-map gnus-tree-mode-map)
459 (buffer-disable-undo (current-buffer))
460 (setq buffer-read-only t)
461 (setq truncate-lines t)
463 (gnus-set-work-buffer)
464 (gnus-tree-node-insert (make-mail-header "") nil)
465 (setq gnus-tree-node-length (1- (point))))
466 (run-hooks 'gnus-tree-mode-hook))
468 (defun gnus-tree-read-summary-keys (&optional arg)
469 "Read a summary buffer key sequence and execute it."
471 (let ((buf (current-buffer))
473 (gnus-article-read-summary-keys arg nil t)
474 (when (setq win (get-buffer-window buf))
476 (when gnus-selected-tree-overlay
477 (goto-char (or (gnus-overlay-end gnus-selected-tree-overlay) 1)))
478 (gnus-tree-minimize))))
480 (defun gnus-tree-show-summary ()
481 "Reconfigure windows to show summary buffer."
483 (if (not (gnus-buffer-live-p gnus-summary-buffer))
484 (error "There is no summary buffer for this tree buffer")
485 (gnus-configure-windows 'article)
486 (gnus-summary-goto-subject gnus-current-article)))
488 (defun gnus-tree-select-article (article)
489 "Select the article under point, if any."
490 (interactive (list (gnus-tree-article-number)))
491 (let ((buf (current-buffer)))
494 (set-buffer gnus-summary-buffer)
495 (gnus-summary-goto-article article))
496 (select-window (get-buffer-window buf)))))
498 (defun gnus-tree-pick-article (e)
499 "Select the article under the mouse pointer."
502 (gnus-tree-select-article (gnus-tree-article-number)))
504 (defun gnus-tree-article-number ()
505 (get-text-property (point) 'gnus-number))
507 (defun gnus-tree-article-region (article)
508 "Return a cons with BEG and END of the article region."
509 (let ((pos (text-property-any (point-min) (point-max) 'gnus-number article)))
511 (cons pos (next-single-property-change pos 'gnus-number)))))
513 (defun gnus-tree-goto-article (article)
514 (let ((pos (text-property-any (point-min) (point-max) 'gnus-number article)))
518 (defun gnus-tree-recenter ()
519 "Center point in the tree window."
520 (let ((selected (selected-window))
521 (tree-window (get-buffer-window gnus-tree-buffer t)))
523 (select-window tree-window)
524 (when gnus-selected-tree-overlay
525 (goto-char (or (gnus-overlay-end gnus-selected-tree-overlay) 1)))
526 (let* ((top (cond ((< (window-height) 4) 0)
527 ((< (window-height) 7) 1)
529 (height (1- (window-height)))
530 (bottom (save-excursion (goto-char (point-max))
531 (forward-line (- height))
533 ;; Set the window start to either `bottom', which is the biggest
534 ;; possible valid number, or the second line from the top,
535 ;; whichever is the least.
537 tree-window (min bottom (save-excursion
538 (forward-line (- top)) (point)))))
539 (select-window selected))))
541 (defun gnus-get-tree-buffer ()
542 "Return the tree buffer properly initialized."
544 (set-buffer (get-buffer-create gnus-tree-buffer))
545 (unless (eq major-mode 'gnus-tree-mode)
546 (gnus-add-current-to-buffer-list)
550 (defun gnus-tree-minimize ()
551 (when (and gnus-tree-minimize-window
552 (not (one-window-p)))
555 (walk-windows (lambda (window) (incf windows)))
558 (* window-min-height (1- windows))
560 (let* ((window-min-height 2)
561 (height (count-lines (point-min) (point-max)))
562 (min (max (1- window-min-height) height))
563 (tot (if (numberp gnus-tree-minimize-window)
564 (min gnus-tree-minimize-window min)
566 (win (get-buffer-window (current-buffer)))
567 (wh (and win (1- (window-height win)))))
568 (setq tot (min tot tot-win-height))
571 (let ((selected (selected-window)))
572 (when (ignore-errors (select-window win))
573 (enlarge-window (- tot wh))
574 (select-window selected))))))))
576 ;;; Generating the tree.
578 (defun gnus-tree-node-insert (header sparse &optional adopted)
579 (let* ((dummy (stringp header))
580 (header (if (vectorp header) header
582 (setq header (make-mail-header "*****"))
583 (mail-header-set-number header 0)
584 (mail-header-set-lines header 0)
585 (mail-header-set-chars header 0)
587 (gnus-tmp-from (mail-header-from header))
588 (gnus-tmp-subject (mail-header-subject header))
589 (gnus-tmp-number (mail-header-number header))
592 ((string-match "(.+)" gnus-tmp-from)
593 (substring gnus-tmp-from
594 (1+ (match-beginning 0)) (1- (match-end 0))))
595 ((string-match "<[^>]+> *$" gnus-tmp-from)
596 (let ((beg (match-beginning 0)))
597 (or (and (string-match "^\"[^\"]*\"" gnus-tmp-from)
598 (substring gnus-tmp-from (1+ (match-beginning 0))
600 (substring gnus-tmp-from 0 beg))))
601 ((memq gnus-tmp-number sparse)
604 (gnus-tmp-open-bracket
605 (cond ((memq gnus-tmp-number sparse)
606 (caadr gnus-tree-brackets))
607 (dummy (caaddr gnus-tree-brackets))
608 (adopted (car (nth 3 gnus-tree-brackets)))
609 (t (caar gnus-tree-brackets))))
610 (gnus-tmp-close-bracket
611 (cond ((memq gnus-tmp-number sparse)
612 (cdadr gnus-tree-brackets))
613 (adopted (cdr (nth 3 gnus-tree-brackets)))
615 (cdaddr gnus-tree-brackets))
616 (t (cdar gnus-tree-brackets))))
617 (buffer-read-only nil)
619 (gnus-add-text-properties
621 (setq end (progn (eval gnus-tree-line-format-spec) (point)))
622 (list 'gnus-number gnus-tmp-number))
623 (when (or t (gnus-visual-p 'tree-highlight 'highlight))
624 (gnus-tree-highlight-node gnus-tmp-number beg end))))
626 (defun gnus-tree-highlight-node (article beg end)
627 "Highlight current line according to `gnus-summary-highlight'."
628 (let ((list gnus-summary-highlight)
631 (set-buffer gnus-summary-buffer)
632 (let* ((score (or (cdr (assq article gnus-newsgroup-scored))
633 gnus-summary-default-score 0))
634 (default gnus-summary-default-score)
635 (mark (or (gnus-summary-article-mark article) gnus-unread-mark)))
636 ;; Eval the cars of the lists until we find a match.
638 (not (eval (caar list))))
639 (setq list (cdr list)))))
640 (unless (eq (setq face (cdar list)) (get-text-property beg 'face))
641 (gnus-put-text-property
643 (if (boundp face) (symbol-value face) face)))))
645 (defun gnus-tree-indent (level)
646 (insert (make-string (1- (* (1+ gnus-tree-node-length) level)) ? )))
648 (defvar gnus-tmp-limit)
649 (defvar gnus-tmp-sparse)
650 (defvar gnus-tmp-indent)
652 (defun gnus-generate-tree (thread)
653 "Generate a thread tree for THREAD."
655 (set-buffer (gnus-get-tree-buffer))
656 (let ((buffer-read-only nil)
659 (funcall gnus-generate-tree-function thread 0)
660 (gnus-set-mode-line 'tree)
661 (goto-char (point-min))
664 (let ((selected (selected-window)))
665 (when (get-buffer-window (set-buffer gnus-tree-buffer) t)
666 (select-window (get-buffer-window (set-buffer gnus-tree-buffer) t))
667 (gnus-horizontal-recenter)
668 (select-window selected))))))
670 (defun gnus-generate-horizontal-tree (thread level &optional dummyp adopted)
671 "Generate a horizontal tree."
672 (let* ((dummy (stringp (car thread)))
675 (memq (mail-header-number (car thread))
679 ;; We don't want this article.
680 (setq thread (cdr thread))
682 ;; Not the first article on the line, so we insert a "-".
683 (insert (car gnus-tree-parent-child-edges))
684 ;; If the level isn't zero, then we insert some indentation.
685 (unless (zerop level)
686 (gnus-tree-indent level)
687 (insert (cadr gnus-tree-parent-child-edges))
688 (setq col (- (setq beg (point)) (gnus-point-at-bol) 1))
689 ;; Draw "|" lines upwards.
693 (= (following-char) ? ))
695 (insert (caddr gnus-tree-parent-child-edges)))
698 ;; Insert the article node.
699 (gnus-tree-node-insert (pop thread) gnus-tmp-sparse adopted))
701 ;; End of the thread, so we go to the next line.
704 ;; Recurse downwards in all children of this article.
706 (gnus-generate-horizontal-tree
707 (pop thread) (if do (1+ level) level)
708 (or dummyp dummy) dummy)))))
710 (defsubst gnus-tree-indent-vertical ()
711 (let ((len (- (* (1+ gnus-tree-node-length) gnus-tmp-indent)
712 (- (point) (gnus-point-at-bol)))))
714 (insert (make-string len ? )))))
716 (defsubst gnus-tree-forward-line (n)
717 (while (>= (decf n) 0)
718 (unless (zerop (forward-line 1))
723 (defun gnus-generate-vertical-tree (thread level &optional dummyp adopted)
724 "Generate a vertical tree."
725 (let* ((dummy (stringp (car thread)))
728 (memq (mail-header-number (car thread))
732 ;; We don't want this article.
733 (setq thread (cdr thread))
734 (if (not (save-excursion (beginning-of-line) (bobp)))
735 ;; Not the first article on the line, so we insert a "-".
737 (gnus-tree-indent-vertical)
738 (insert (make-string (/ gnus-tree-node-length 2) ? ))
739 (insert (caddr gnus-tree-parent-child-edges))
740 (gnus-tree-forward-line 1))
741 ;; If the level isn't zero, then we insert some indentation.
742 (unless (zerop gnus-tmp-indent)
743 (gnus-tree-forward-line (1- (* 2 level)))
744 (gnus-tree-indent-vertical)
746 (insert (cadr gnus-tree-parent-child-edges))
749 ;; Draw "-" lines leftwards.
750 (while (= (char-after (1- (point))) ? )
752 (insert (car gnus-tree-parent-child-edges))
755 (gnus-tree-forward-line 1)))
757 ;; Insert the article node.
758 (gnus-tree-indent-vertical)
759 (gnus-tree-node-insert (pop thread) gnus-tmp-sparse adopted)
760 (gnus-tree-forward-line 1))
762 ;; End of the thread, so we go to the next line.
764 (goto-char (point-min))
766 (incf gnus-tmp-indent))
767 ;; Recurse downwards in all children of this article.
769 (gnus-generate-vertical-tree
770 (pop thread) (if do (1+ level) level)
771 (or dummyp dummy) dummy)))))
773 ;;; Interface functions.
775 (defun gnus-possibly-generate-tree (article &optional force)
776 "Generate the thread tree for ARTICLE if it isn't displayed already."
777 (when (save-excursion
778 (set-buffer gnus-summary-buffer)
781 (vectorp (gnus-summary-article-header article))))
783 (let ((top (save-excursion
784 (set-buffer gnus-summary-buffer)
788 (gnus-summary-article-header article))
790 (gnus-tmp-limit gnus-newsgroup-limit)
791 (gnus-tmp-sparse gnus-newsgroup-sparse))
793 (not (eq top gnus-tree-displayed-thread)))
794 (gnus-generate-tree top)
795 (setq gnus-tree-displayed-thread top))))))
797 (defun gnus-tree-open (group)
798 (gnus-get-tree-buffer))
800 (defun gnus-tree-close (group)
801 ;(gnus-kill-buffer gnus-tree-buffer)
804 (defun gnus-highlight-selected-tree (article)
805 "Highlight the selected article in the tree."
806 (let ((buf (current-buffer))
808 (set-buffer gnus-tree-buffer)
809 (when (setq region (gnus-tree-article-region article))
810 (when (or (not gnus-selected-tree-overlay)
811 (gnus-extent-detached-p gnus-selected-tree-overlay))
812 ;; Create a new overlay.
814 (setq gnus-selected-tree-overlay (gnus-make-overlay 1 2))
815 'face gnus-selected-tree-face))
816 ;; Move the overlay to the article.
818 gnus-selected-tree-overlay (goto-char (car region)) (cdr region))
821 (let ((selected (selected-window)))
822 (when (get-buffer-window (set-buffer gnus-tree-buffer) t)
823 (select-window (get-buffer-window (set-buffer gnus-tree-buffer) t))
824 (gnus-horizontal-recenter)
825 (select-window selected))))
826 ;; If we remove this save-excursion, it updates the wrong mode lines?!?
828 (set-buffer gnus-tree-buffer)
829 (gnus-set-mode-line 'tree))
832 (defun gnus-tree-highlight-article (article face)
834 (set-buffer (gnus-get-tree-buffer))
836 (when (setq region (gnus-tree-article-region article))
837 (gnus-put-text-property (car region) (cdr region) 'face face)
839 (get-buffer-window (current-buffer) t) (cdr region))))))
845 (defvar gnus-carpal-group-buffer-buttons
846 '(("next" . gnus-group-next-unread-group)
847 ("prev" . gnus-group-prev-unread-group)
848 ("read" . gnus-group-read-group)
849 ("select" . gnus-group-select-group)
850 ("catch-up" . gnus-group-catchup-current)
851 ("new-news" . gnus-group-get-new-news-this-group)
852 ("toggle-sub" . gnus-group-unsubscribe-current-group)
853 ("subscribe" . gnus-group-unsubscribe-group)
854 ("kill" . gnus-group-kill-group)
855 ("yank" . gnus-group-yank-group)
856 ("describe" . gnus-group-describe-group)
858 ("subscribed" . gnus-group-list-groups)
859 ("all" . gnus-group-list-all-groups)
860 ("killed" . gnus-group-list-killed)
861 ("zombies" . gnus-group-list-zombies)
862 ("matching" . gnus-group-list-matching)
863 ("post" . gnus-group-post-news)
864 ("mail" . gnus-group-mail)
865 ("rescan" . gnus-group-get-new-news)
866 ("browse-foreign" . gnus-group-browse-foreign)
867 ("exit" . gnus-group-exit)))
869 (defvar gnus-carpal-summary-buffer-buttons
871 ("read" . gnus-summary-mark-as-read-forward)
872 ("tick" . gnus-summary-tick-article-forward)
873 ("clear" . gnus-summary-clear-mark-forward)
874 ("expirable" . gnus-summary-mark-as-expirable)
876 ("scroll" . gnus-summary-next-page)
877 ("next-unread" . gnus-summary-next-unread-article)
878 ("prev-unread" . gnus-summary-prev-unread-article)
879 ("first" . gnus-summary-first-unread-article)
880 ("best" . gnus-summary-best-unread-article)
882 ("headers" . gnus-summary-toggle-header)
883 ("uudecode" . gnus-uu-decode-uu)
884 ("enter-digest" . gnus-summary-enter-digest-group)
885 ("fetch-parent" . gnus-summary-refer-parent-article)
887 ("move" . gnus-summary-move-article)
888 ("copy" . gnus-summary-copy-article)
889 ("respool" . gnus-summary-respool-article)
891 ("lower" . gnus-summary-lower-thread)
892 ("kill" . gnus-summary-kill-thread)
894 ("post" . gnus-summary-post-news)
895 ("mail" . gnus-summary-mail)
896 ("followup" . gnus-summary-followup-with-original)
897 ("reply" . gnus-summary-reply-with-original)
898 ("cancel" . gnus-summary-cancel-article)
900 ("exit" . gnus-summary-exit)
901 ("fed-up" . gnus-summary-catchup-and-goto-next-group)))
903 (defvar gnus-carpal-server-buffer-buttons
904 '(("add" . gnus-server-add-server)
905 ("browse" . gnus-server-browse-server)
906 ("list" . gnus-server-list-servers)
907 ("kill" . gnus-server-kill-server)
908 ("yank" . gnus-server-yank-server)
909 ("copy" . gnus-server-copy-server)
910 ("exit" . gnus-server-exit)))
912 (defvar gnus-carpal-browse-buffer-buttons
913 '(("subscribe" . gnus-browse-unsubscribe-current-group)
914 ("exit" . gnus-browse-exit)))
916 (defvar gnus-carpal-group-buffer "*Carpal Group*")
917 (defvar gnus-carpal-summary-buffer "*Carpal Summary*")
918 (defvar gnus-carpal-server-buffer "*Carpal Server*")
919 (defvar gnus-carpal-browse-buffer "*Carpal Browse*")
921 (defvar gnus-carpal-attached-buffer nil)
923 (defvar gnus-carpal-mode-hook nil
924 "*Hook run in carpal mode buffers.")
926 (defvar gnus-carpal-button-face 'bold
927 "*Face used on carpal buttons.")
929 (defvar gnus-carpal-header-face 'bold-italic
930 "*Face used on carpal buffer headers.")
932 (defvar gnus-carpal-mode-map nil)
933 (put 'gnus-carpal-mode 'mode-class 'special)
935 (if gnus-carpal-mode-map
937 (setq gnus-carpal-mode-map (make-keymap))
938 (suppress-keymap gnus-carpal-mode-map)
939 (define-key gnus-carpal-mode-map " " 'gnus-carpal-select)
940 (define-key gnus-carpal-mode-map "\r" 'gnus-carpal-select)
941 (define-key gnus-carpal-mode-map gnus-mouse-2 'gnus-carpal-mouse-select))
943 (defun gnus-carpal-mode ()
944 "Major mode for clicking buttons.
946 All normal editing commands are switched off.
947 \\<gnus-carpal-mode-map>
948 The following commands are available:
950 \\{gnus-carpal-mode-map}"
952 (kill-all-local-variables)
953 (setq mode-line-modified "-- ")
954 (setq major-mode 'gnus-carpal-mode)
955 (setq mode-name "Gnus Carpal")
956 (setq mode-line-process nil)
957 (use-local-map gnus-carpal-mode-map)
958 (buffer-disable-undo (current-buffer))
959 (setq buffer-read-only t)
960 (make-local-variable 'gnus-carpal-attached-buffer)
961 (run-hooks 'gnus-carpal-mode-hook))
963 (defun gnus-carpal-setup-buffer (type)
964 (let ((buffer (symbol-value (intern (format "gnus-carpal-%s-buffer" type)))))
965 (if (get-buffer buffer)
968 (set-buffer (get-buffer-create buffer))
970 (setq gnus-carpal-attached-buffer
971 (intern (format "gnus-%s-buffer" type)))
972 (gnus-add-current-to-buffer-list)
973 (let ((buttons (symbol-value
974 (intern (format "gnus-carpal-%s-buffer-buttons"
976 (buffer-read-only nil)
979 (setq button (car buttons)
980 buttons (cdr buttons))
982 (gnus-set-text-properties
984 (prog2 (insert button) (point) (insert " "))
985 (list 'face gnus-carpal-header-face))
986 (gnus-set-text-properties
988 (prog2 (insert (car button)) (point) (insert " "))
989 (list 'gnus-callback (cdr button)
990 'face gnus-carpal-button-face
991 gnus-mouse-face-prop 'highlight))))
992 (let ((fill-column (- (window-width) 2)))
993 (fill-region (point-min) (point-max)))
994 (set-window-point (get-buffer-window (current-buffer))
997 (defun gnus-carpal-select ()
998 "Select the button under point."
1000 (let ((func (get-text-property (point) 'gnus-callback)))
1003 (pop-to-buffer (symbol-value gnus-carpal-attached-buffer))
1004 (call-interactively func))))
1006 (defun gnus-carpal-mouse-select (event)
1007 "Select the button under the mouse pointer."
1009 (mouse-set-point event)
1010 (gnus-carpal-select))
1012 ;;; Allow redefinition of functions.
1015 (provide 'gnus-salt)
1017 ;;; gnus-salt.el ends here