1 ;;; gnus-salt.el --- alternate summary mode interfaces for Gnus
2 ;; Copyright (C) 1996 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 (defvar gnus-pick-display-summary nil
38 "*Display summary while reading.")
40 (defvar gnus-pick-mode-hook nil
41 "Hook run in summary pick mode buffers.")
43 (defvar gnus-mark-unpicked-articles-as-read nil
44 "*If non-nil, mark all unpicked articles as read.")
46 (defvar gnus-pick-elegant-flow t
47 "If non-nil, gnus-pick-start-reading will run gnus-summary-next-group when no articles have been picked.")
49 (defvar gnus-summary-pick-line-format
50 "%-5P %U\%R\%z\%I\%(%[%4L: %-20,20n%]%) %s\n"
51 "*The format specification of the lines in pick buffers.
52 It accepts the same format specs that `gnus-summary-line-format' does.")
54 ;;; Internal variables.
56 (defvar gnus-pick-mode-map nil)
58 (unless gnus-pick-mode-map
59 (setq gnus-pick-mode-map (make-sparse-keymap))
63 "t" gnus-uu-mark-thread
64 "T" gnus-uu-unmark-thread
65 " " gnus-pick-next-page
66 "u" gnus-summary-unmark-as-processable
67 "U" gnus-summary-unmark-all-processable
69 "r" gnus-uu-mark-region
70 "R" gnus-uu-unmark-region
71 "e" gnus-uu-mark-by-regexp
72 "E" gnus-uu-mark-by-regexp
73 "b" gnus-uu-mark-buffer
74 "B" gnus-uu-unmark-buffer
76 gnus-down-mouse-2 gnus-pick-mouse-pick-region
77 ;;gnus-mouse-2 gnus-pick-mouse-pick
78 "\r" gnus-pick-start-reading))
80 (defun gnus-pick-make-menu-bar ()
81 (unless (boundp 'gnus-pick-menu)
83 gnus-pick-menu gnus-pick-mode-map ""
86 ["Article" gnus-summary-mark-as-processable t]
87 ["Thread" gnus-uu-mark-thread t]
88 ["Region" gnus-uu-mark-region t]
89 ["Regexp" gnus-uu-mark-regexp t]
90 ["Buffer" gnus-uu-mark-buffer t])
92 ["Article" gnus-summary-unmark-as-processable t]
93 ["Thread" gnus-uu-unmark-thread t]
94 ["Region" gnus-uu-unmark-region t]
95 ["Regexp" gnus-uu-unmark-regexp t]
96 ["Buffer" gnus-uu-unmark-buffer t])
97 ["Start reading" gnus-pick-start-reading t]
98 ["Switch pick mode off" gnus-pick-mode gnus-pick-mode]))))
100 (defun gnus-pick-mode (&optional arg)
101 "Minor mode for providing a pick-and-read interface in Gnus summary buffers.
103 \\{gnus-pick-mode-map}"
105 (when (eq major-mode 'gnus-summary-mode)
106 (when (set (make-local-variable 'gnus-pick-mode)
107 (if (null arg) (not gnus-pick-mode)
108 (> (prefix-numeric-value arg) 0)))
109 ;; Make sure that we don't select any articles upon group entry.
110 (set (make-local-variable 'gnus-auto-select-first) nil)
111 ;; Change line format.
112 (setq gnus-summary-line-format gnus-summary-pick-line-format)
113 (setq gnus-summary-line-format-spec nil)
114 (gnus-update-format-specifications nil 'summary)
115 (gnus-update-summary-mark-positions)
117 (when (and menu-bar-mode
118 (gnus-visual-p 'pick-menu 'menu))
119 (gnus-pick-make-menu-bar))
120 (unless (assq 'gnus-pick-mode minor-mode-alist)
121 (push '(gnus-pick-mode " Pick") minor-mode-alist))
122 (unless (assq 'gnus-pick-mode minor-mode-map-alist)
123 (push (cons 'gnus-pick-mode gnus-pick-mode-map)
124 minor-mode-map-alist))
125 (run-hooks 'gnus-pick-mode-hook))))
127 (defvar gnus-pick-line-number 1)
128 (defun gnus-pick-line-number ()
129 "Return the current line number."
131 (setq gnus-pick-line-number 1)
132 (incf gnus-pick-line-number)))
134 (defun gnus-pick-start-reading (&optional catch-up)
135 "Start reading the picked articles.
136 If given a prefix, mark all unpicked articles as read."
138 (if gnus-newsgroup-processable
140 (gnus-summary-limit-to-articles nil)
141 (when (or catch-up gnus-mark-unpicked-articles-as-read)
142 (gnus-summary-limit-mark-excluded-as-read))
143 (gnus-summary-first-unread-article)
144 (gnus-configure-windows
145 (if gnus-pick-display-summary 'article 'pick) t))
146 (if gnus-pick-elegant-flow
147 (gnus-summary-next-group)
148 (error "No articles have been picked"))))
150 (defun gnus-pick-article (&optional arg)
151 "Pick the article on the current line.
152 If ARG, pick the article on that line instead."
157 (goto-char (point-min))
158 (when (zerop (forward-line (1- (prefix-numeric-value arg))))
161 (gnus-error 2 "No such line: %s" arg)
163 (gnus-summary-mark-as-processable 1))
165 (defun gnus-pick-mouse-pick (e)
169 (gnus-summary-mark-as-processable 1)))
171 (defun gnus-pick-mouse-pick-region (start-event)
172 "Pick articles that the mouse is dragged over.
173 This must be bound to a button-down mouse event."
175 (mouse-minibuffer-check start-event)
176 (let* ((echo-keystrokes 0)
177 (start-posn (event-start start-event))
178 (start-point (posn-point start-posn))
179 (start-line (1+ (count-lines 1 start-point)))
180 (start-window (posn-window start-posn))
181 (start-frame (window-frame start-window))
182 (bounds (window-edges start-window))
184 (bottom (if (window-minibuffer-p start-window)
186 ;; Don't count the mode line.
187 (1- (nth 3 bounds))))
188 (click-count (1- (event-click-count start-event))))
189 (setq mouse-selection-click-count click-count)
190 (setq mouse-selection-click-count-buffer (current-buffer))
191 (mouse-set-point start-event)
192 ;; In case the down click is in the middle of some intangible text,
193 ;; use the end of that text, and put it in START-POINT.
194 (if (< (point) start-point)
195 (goto-char start-point))
197 (setq start-point (point))
198 ;; end-of-range is used only in the single-click case.
199 ;; It is the place where the drag has reached so far
200 ;; (but not outside the window where the drag started).
201 (let (event end end-point last-end-point (end-of-range (point)))
204 (setq event (read-event))
205 (or (mouse-movement-p event)
206 (eq (car-safe event) 'switch-frame)))
207 (if (eq (car-safe event) 'switch-frame)
209 (setq end (event-end event)
210 end-point (posn-point end))
212 (setq last-end-point end-point))
215 ;; Are we moving within the original window?
216 ((and (eq (posn-window end) start-window)
217 (integer-or-marker-p end-point))
218 ;; Go to START-POINT first, so that when we move to END-POINT,
219 ;; if it's in the middle of intangible text,
220 ;; point jumps in the direction away from START-POINT.
221 (goto-char start-point)
222 (goto-char end-point)
224 ;; In case the user moved his mouse really fast, pick
225 ;; articles on the line between this one and the last one.
226 (let* ((this-line (1+ (count-lines 1 end-point)))
227 (min-line (min this-line start-line))
228 (max-line (max this-line start-line)))
229 (while (< min-line max-line)
232 (setq min-line (1+ min-line)))
233 (setq start-line this-line))
234 (if (zerop (% click-count 3))
235 (setq end-of-range (point))))
237 (let ((mouse-row (cdr (cdr (mouse-position)))))
241 (mouse-scroll-subr start-window (- mouse-row top)))
242 ((>= mouse-row bottom)
243 (mouse-scroll-subr start-window
244 (1+ (- mouse-row bottom)))))))))))
246 (let ((fun (key-binding (vector (car event)))))
247 ;; Run the binding of the terminating up-event, if possible.
248 ;; In the case of a multiple click, it gives the wrong results,
249 ;; because it would fail to set up a region.
250 (if nil ;; (and (= (mod mouse-selection-click-count 3) 0) (fboundp fun))
251 ;; In this case, we can just let the up-event execute normally.
252 (let ((end (event-end event)))
253 ;; Set the position in the event before we replay it,
254 ;; because otherwise it may have a position in the wrong
256 (setcar (cdr end) end-of-range)
257 ;; Delete the overlay before calling the function,
258 ;; because delete-overlay increases buffer-modified-tick.
259 (setq unread-command-events
260 (cons event unread-command-events)))))))))
262 (defun gnus-pick-next-page ()
263 "Go to the next page. If at the end of the buffer, start reading articles."
267 (end-of-buffer (gnus-pick-start-reading))))
273 (defvar gnus-binary-mode nil
274 "Minor mode for providing a binary group interface in Gnus summary buffers.")
276 (defvar gnus-binary-mode-hook nil
277 "Hook run in summary binary mode buffers.")
279 (defvar gnus-binary-mode-map nil)
281 (unless gnus-binary-mode-map
282 (setq gnus-binary-mode-map (make-sparse-keymap))
286 "g" gnus-binary-show-article))
288 (defun gnus-binary-make-menu-bar ()
289 (unless (boundp 'gnus-binary-menu)
291 gnus-binary-menu gnus-binary-mode-map ""
293 ["Switch binary mode off" gnus-binary-mode t]))))
295 (defun gnus-binary-mode (&optional arg)
296 "Minor mode for providing a binary group interface in Gnus summary buffers."
298 (when (eq major-mode 'gnus-summary-mode)
299 (make-local-variable 'gnus-binary-mode)
300 (setq gnus-binary-mode
301 (if (null arg) (not gnus-binary-mode)
302 (> (prefix-numeric-value arg) 0)))
303 (when gnus-binary-mode
304 ;; Make sure that we don't select any articles upon group entry.
305 (make-local-variable 'gnus-auto-select-first)
306 (setq gnus-auto-select-first nil)
307 (make-local-variable 'gnus-summary-display-article-function)
308 (setq gnus-summary-display-article-function 'gnus-binary-display-article)
310 (when (and menu-bar-mode
311 (gnus-visual-p 'binary-menu 'menu))
312 (gnus-binary-make-menu-bar))
313 (unless (assq 'gnus-binary-mode minor-mode-alist)
314 (push '(gnus-binary-mode " Binary") minor-mode-alist))
315 (unless (assq 'gnus-binary-mode minor-mode-map-alist)
316 (push (cons 'gnus-binary-mode gnus-binary-mode-map)
317 minor-mode-map-alist))
318 (run-hooks 'gnus-binary-mode-hook))))
320 (defun gnus-binary-display-article (article &optional all-header)
321 "Run ARTICLE through the binary decode functions."
322 (when (gnus-summary-goto-subject article)
323 (let ((gnus-view-pseudos 'automatic))
324 (gnus-uu-decode-uu))))
326 (defun gnus-binary-show-article (&optional arg)
327 "Bypass the binary functions and show the article."
329 (let (gnus-summary-display-article-function)
330 (gnus-summary-show-article arg)))
336 (defvar gnus-tree-line-format "%(%[%3,3n%]%)"
337 "Format of tree elements.")
339 (defvar gnus-tree-minimize-window t
340 "If non-nil, minimize the tree buffer window.
341 If a number, never let the tree buffer grow taller than that number of
344 (defvar gnus-selected-tree-face 'modeline
345 "*Face used for highlighting selected articles in the thread tree.")
347 (defvar gnus-tree-brackets '((?\[ . ?\]) (?\( . ?\))
348 (?\{ . ?\}) (?< . ?>))
349 "Brackets used in tree nodes.")
351 (defvar gnus-tree-parent-child-edges '(?- ?\\ ?|)
352 "Characters used to connect parents with children.")
354 (defvar gnus-tree-mode-line-format "Gnus: %%b %S %Z"
355 "*The format specification for the tree mode line.")
357 (defvar gnus-generate-tree-function 'gnus-generate-vertical-tree
358 "*Function for generating a thread tree.
359 Two predefined functions are available:
360 `gnus-generate-horizontal-tree' and `gnus-generate-vertical-tree'.")
362 (defvar gnus-tree-mode-hook nil
363 "*Hook run in tree mode buffers.")
365 ;;; Internal variables.
367 (defvar gnus-tree-line-format-alist
368 `((?n gnus-tmp-name ?s)
369 (?f gnus-tmp-from ?s)
370 (?N gnus-tmp-number ?d)
371 (?\[ gnus-tmp-open-bracket ?c)
372 (?\] gnus-tmp-close-bracket ?c)
373 (?s gnus-tmp-subject ?s)))
375 (defvar gnus-tree-mode-line-format-alist gnus-summary-mode-line-format-alist)
377 (defvar gnus-tree-mode-line-format-spec nil)
378 (defvar gnus-tree-line-format-spec nil)
380 (defvar gnus-tree-node-length nil)
381 (defvar gnus-selected-tree-overlay nil)
383 (defvar gnus-tree-displayed-thread nil)
385 (defvar gnus-tree-mode-map nil)
386 (put 'gnus-tree-mode 'mode-class 'special)
388 (unless gnus-tree-mode-map
389 (setq gnus-tree-mode-map (make-keymap))
390 (suppress-keymap gnus-tree-mode-map)
393 "\r" gnus-tree-select-article
394 gnus-mouse-2 gnus-tree-pick-article
395 "\C-?" gnus-tree-read-summary-keys
397 "\C-c\C-i" gnus-info-find-node)
399 (substitute-key-definition
400 'undefined 'gnus-tree-read-summary-keys gnus-tree-mode-map))
402 (defun gnus-tree-make-menu-bar ()
403 (unless (boundp 'gnus-tree-menu)
405 gnus-tree-menu gnus-tree-mode-map ""
407 ["Select article" gnus-tree-select-article t]))))
409 (defun gnus-tree-mode ()
410 "Major mode for displaying thread trees."
412 (setq gnus-tree-mode-line-format-spec
413 (gnus-parse-format gnus-tree-mode-line-format
414 gnus-summary-mode-line-format-alist))
415 (setq gnus-tree-line-format-spec
416 (gnus-parse-format gnus-tree-line-format
417 gnus-tree-line-format-alist t))
418 (when (and menu-bar-mode
419 (gnus-visual-p 'tree-menu 'menu))
420 (gnus-tree-make-menu-bar))
421 (kill-all-local-variables)
422 (gnus-simplify-mode-line)
423 (setq mode-name "Tree")
424 (setq major-mode 'gnus-tree-mode)
425 (use-local-map gnus-tree-mode-map)
426 (buffer-disable-undo (current-buffer))
427 (setq buffer-read-only t)
428 (setq truncate-lines t)
430 (gnus-set-work-buffer)
431 (gnus-tree-node-insert (make-mail-header "") nil)
432 (setq gnus-tree-node-length (1- (point))))
433 (run-hooks 'gnus-tree-mode-hook))
435 (defun gnus-tree-read-summary-keys (&optional arg)
436 "Read a summary buffer key sequence and execute it."
438 (let ((buf (current-buffer))
440 (gnus-article-read-summary-keys arg nil t)
441 (when (setq win (get-buffer-window buf))
443 (when gnus-selected-tree-overlay
444 (goto-char (or (gnus-overlay-end gnus-selected-tree-overlay) 1)))
445 (gnus-tree-minimize))))
447 (defun gnus-tree-select-article (article)
448 "Select the article under point, if any."
449 (interactive (list (gnus-tree-article-number)))
450 (let ((buf (current-buffer)))
453 (set-buffer gnus-summary-buffer)
454 (gnus-summary-goto-article article))
455 (select-window (get-buffer-window buf)))))
457 (defun gnus-tree-pick-article (e)
458 "Select the article under the mouse pointer."
461 (gnus-tree-select-article (gnus-tree-article-number)))
463 (defun gnus-tree-article-number ()
464 (get-text-property (point) 'gnus-number))
466 (defun gnus-tree-article-region (article)
467 "Return a cons with BEG and END of the article region."
468 (let ((pos (text-property-any (point-min) (point-max) 'gnus-number article)))
470 (cons pos (next-single-property-change pos 'gnus-number)))))
472 (defun gnus-tree-goto-article (article)
473 (let ((pos (text-property-any (point-min) (point-max) 'gnus-number article)))
477 (defun gnus-tree-recenter ()
478 "Center point in the tree window."
479 (let ((selected (selected-window))
480 (tree-window (get-buffer-window gnus-tree-buffer t)))
482 (select-window tree-window)
483 (when gnus-selected-tree-overlay
484 (goto-char (or (gnus-overlay-end gnus-selected-tree-overlay) 1)))
485 (let* ((top (cond ((< (window-height) 4) 0)
486 ((< (window-height) 7) 1)
488 (height (1- (window-height)))
489 (bottom (save-excursion (goto-char (point-max))
490 (forward-line (- height))
492 ;; Set the window start to either `bottom', which is the biggest
493 ;; possible valid number, or the second line from the top,
494 ;; whichever is the least.
496 tree-window (min bottom (save-excursion
497 (forward-line (- top)) (point)))))
498 (select-window selected))))
500 (defun gnus-get-tree-buffer ()
501 "Return the tree buffer properly initialized."
503 (set-buffer (get-buffer-create gnus-tree-buffer))
504 (unless (eq major-mode 'gnus-tree-mode)
505 (gnus-add-current-to-buffer-list)
509 (defun gnus-tree-minimize ()
510 (when (and gnus-tree-minimize-window
511 (not (one-window-p)))
514 (walk-windows (lambda (window) (incf windows)))
517 (* window-min-height (1- windows))
519 (let* ((window-min-height 2)
520 (height (count-lines (point-min) (point-max)))
521 (min (max (1- window-min-height) height))
522 (tot (if (numberp gnus-tree-minimize-window)
523 (min gnus-tree-minimize-window min)
525 (win (get-buffer-window (current-buffer)))
526 (wh (and win (1- (window-height win)))))
527 (setq tot (min tot tot-win-height))
530 (let ((selected (selected-window)))
532 (enlarge-window (- tot wh))
533 (select-window selected)))))))
535 ;;; Generating the tree.
537 (defun gnus-tree-node-insert (header sparse &optional adopted)
538 (let* ((dummy (stringp header))
539 (header (if (vectorp header) header
541 (setq header (make-mail-header "*****"))
542 (mail-header-set-number header 0)
543 (mail-header-set-lines header 0)
544 (mail-header-set-chars header 0)
546 (gnus-tmp-from (mail-header-from header))
547 (gnus-tmp-subject (mail-header-subject header))
548 (gnus-tmp-number (mail-header-number header))
551 ((string-match "(.+)" gnus-tmp-from)
552 (substring gnus-tmp-from
553 (1+ (match-beginning 0)) (1- (match-end 0))))
554 ((string-match "<[^>]+> *$" gnus-tmp-from)
555 (let ((beg (match-beginning 0)))
556 (or (and (string-match "^\"[^\"]*\"" gnus-tmp-from)
557 (substring gnus-tmp-from (1+ (match-beginning 0))
559 (substring gnus-tmp-from 0 beg))))
560 ((memq gnus-tmp-number sparse)
563 (gnus-tmp-open-bracket
564 (cond ((memq gnus-tmp-number sparse)
565 (caadr gnus-tree-brackets))
566 (dummy (caaddr gnus-tree-brackets))
567 (adopted (car (nth 3 gnus-tree-brackets)))
568 (t (caar gnus-tree-brackets))))
569 (gnus-tmp-close-bracket
570 (cond ((memq gnus-tmp-number sparse)
571 (cdadr gnus-tree-brackets))
572 (adopted (cdr (nth 3 gnus-tree-brackets)))
574 (cdaddr gnus-tree-brackets))
575 (t (cdar gnus-tree-brackets))))
576 (buffer-read-only nil)
578 (gnus-add-text-properties
580 (setq end (progn (eval gnus-tree-line-format-spec) (point)))
581 (list 'gnus-number gnus-tmp-number))
582 (when (or t (gnus-visual-p 'tree-highlight 'highlight))
583 (gnus-tree-highlight-node gnus-tmp-number beg end))))
585 (defun gnus-tree-highlight-node (article beg end)
586 "Highlight current line according to `gnus-summary-highlight'."
587 (let ((list gnus-summary-highlight)
590 (set-buffer gnus-summary-buffer)
591 (let* ((score (or (cdr (assq article gnus-newsgroup-scored))
592 gnus-summary-default-score 0))
593 (default gnus-summary-default-score)
594 (mark (or (gnus-summary-article-mark article) gnus-unread-mark)))
595 ;; Eval the cars of the lists until we find a match.
597 (not (eval (caar list))))
598 (setq list (cdr list)))))
599 (unless (eq (setq face (cdar list)) (get-text-property beg 'face))
600 (gnus-put-text-property
602 (if (boundp face) (symbol-value face) face)))))
604 (defun gnus-tree-indent (level)
605 (insert (make-string (1- (* (1+ gnus-tree-node-length) level)) ? )))
607 (defvar gnus-tmp-limit)
608 (defvar gnus-tmp-sparse)
609 (defvar gnus-tmp-indent)
611 (defun gnus-generate-tree (thread)
612 "Generate a thread tree for THREAD."
614 (set-buffer (gnus-get-tree-buffer))
615 (let ((buffer-read-only nil)
618 (funcall gnus-generate-tree-function thread 0)
619 (gnus-set-mode-line 'tree)
620 (goto-char (point-min))
623 (let ((selected (selected-window)))
624 (when (get-buffer-window (set-buffer gnus-tree-buffer) t)
625 (select-window (get-buffer-window (set-buffer gnus-tree-buffer) t))
626 (gnus-horizontal-recenter)
627 (select-window selected))))))
629 (defun gnus-generate-horizontal-tree (thread level &optional dummyp adopted)
630 "Generate a horizontal tree."
631 (let* ((dummy (stringp (car thread)))
633 (memq (mail-header-number (car thread)) gnus-tmp-limit)))
636 ;; We don't want this article.
637 (setq thread (cdr thread))
639 ;; Not the first article on the line, so we insert a "-".
640 (insert (car gnus-tree-parent-child-edges))
641 ;; If the level isn't zero, then we insert some indentation.
642 (unless (zerop level)
643 (gnus-tree-indent level)
644 (insert (cadr gnus-tree-parent-child-edges))
645 (setq col (- (setq beg (point)) (gnus-point-at-bol) 1))
646 ;; Draw "|" lines upwards.
650 (= (following-char) ? ))
652 (insert (caddr gnus-tree-parent-child-edges)))
655 ;; Insert the article node.
656 (gnus-tree-node-insert (pop thread) gnus-tmp-sparse adopted))
658 ;; End of the thread, so we go to the next line.
661 ;; Recurse downwards in all children of this article.
663 (gnus-generate-horizontal-tree
664 (pop thread) (if do (1+ level) level)
665 (or dummyp dummy) dummy)))))
667 (defsubst gnus-tree-indent-vertical ()
668 (let ((len (- (* (1+ gnus-tree-node-length) gnus-tmp-indent)
669 (- (point) (gnus-point-at-bol)))))
671 (insert (make-string len ? )))))
673 (defsubst gnus-tree-forward-line (n)
674 (while (>= (decf n) 0)
675 (unless (zerop (forward-line 1))
680 (defun gnus-generate-vertical-tree (thread level &optional dummyp adopted)
681 "Generate a vertical tree."
682 (let* ((dummy (stringp (car thread)))
684 (memq (mail-header-number (car thread)) gnus-tmp-limit)))
687 ;; We don't want this article.
688 (setq thread (cdr thread))
689 (if (not (save-excursion (beginning-of-line) (bobp)))
690 ;; Not the first article on the line, so we insert a "-".
692 (gnus-tree-indent-vertical)
693 (insert (make-string (/ gnus-tree-node-length 2) ? ))
694 (insert (caddr gnus-tree-parent-child-edges))
695 (gnus-tree-forward-line 1))
696 ;; If the level isn't zero, then we insert some indentation.
697 (unless (zerop gnus-tmp-indent)
698 (gnus-tree-forward-line (1- (* 2 level)))
699 (gnus-tree-indent-vertical)
701 (insert (cadr gnus-tree-parent-child-edges))
703 ;; Draw "-" lines leftwards.
706 (= (following-char) ? ))
708 (insert (car gnus-tree-parent-child-edges)))
710 (gnus-tree-forward-line 1)))
712 ;; Insert the article node.
713 (gnus-tree-indent-vertical)
714 (gnus-tree-node-insert (pop thread) gnus-tmp-sparse adopted)
715 (gnus-tree-forward-line 1))
717 ;; End of the thread, so we go to the next line.
719 (goto-char (point-min))
721 (incf gnus-tmp-indent))
722 ;; Recurse downwards in all children of this article.
724 (gnus-generate-vertical-tree
725 (pop thread) (if do (1+ level) level)
726 (or dummyp dummy) dummy)))))
728 ;;; Interface functions.
730 (defun gnus-possibly-generate-tree (article &optional force)
731 "Generate the thread tree for ARTICLE if it isn't displayed already."
732 (when (save-excursion
733 (set-buffer gnus-summary-buffer)
736 (vectorp (gnus-summary-article-header article))))
738 (let ((top (save-excursion
739 (set-buffer gnus-summary-buffer)
743 (gnus-summary-article-header article)) t))))
744 (gnus-tmp-limit gnus-newsgroup-limit)
745 (gnus-tmp-sparse gnus-newsgroup-sparse))
747 (not (eq top gnus-tree-displayed-thread)))
748 (gnus-generate-tree top)
749 (setq gnus-tree-displayed-thread top))))))
751 (defun gnus-tree-open (group)
752 (gnus-get-tree-buffer))
754 (defun gnus-tree-close (group)
755 ;(gnus-kill-buffer gnus-tree-buffer)
758 (defun gnus-highlight-selected-tree (article)
759 "Highlight the selected article in the tree."
760 (let ((buf (current-buffer))
762 (set-buffer gnus-tree-buffer)
763 (when (setq region (gnus-tree-article-region article))
764 (when (or (not gnus-selected-tree-overlay)
765 (gnus-extent-detached-p gnus-selected-tree-overlay))
766 ;; Create a new overlay.
768 (setq gnus-selected-tree-overlay (gnus-make-overlay 1 2))
769 'face gnus-selected-tree-face))
770 ;; Move the overlay to the article.
772 gnus-selected-tree-overlay (goto-char (car region)) (cdr region))
775 (let ((selected (selected-window)))
776 (when (get-buffer-window (set-buffer gnus-tree-buffer) t)
777 (select-window (get-buffer-window (set-buffer gnus-tree-buffer) t))
778 (gnus-horizontal-recenter)
779 (select-window selected))))
780 ;; If we remove this save-excursion, it updates the wrong mode lines?!?
782 (set-buffer gnus-tree-buffer)
783 (gnus-set-mode-line 'tree))
786 (defun gnus-tree-highlight-article (article face)
788 (set-buffer (gnus-get-tree-buffer))
790 (when (setq region (gnus-tree-article-region article))
791 (gnus-put-text-property (car region) (cdr region) 'face face)
793 (get-buffer-window (current-buffer) t) (cdr region))))))
799 (defvar gnus-carpal-group-buffer-buttons
800 '(("next" . gnus-group-next-unread-group)
801 ("prev" . gnus-group-prev-unread-group)
802 ("read" . gnus-group-read-group)
803 ("select" . gnus-group-select-group)
804 ("catch-up" . gnus-group-catchup-current)
805 ("new-news" . gnus-group-get-new-news-this-group)
806 ("toggle-sub" . gnus-group-unsubscribe-current-group)
807 ("subscribe" . gnus-group-unsubscribe-group)
808 ("kill" . gnus-group-kill-group)
809 ("yank" . gnus-group-yank-group)
810 ("describe" . gnus-group-describe-group)
812 ("subscribed" . gnus-group-list-groups)
813 ("all" . gnus-group-list-all-groups)
814 ("killed" . gnus-group-list-killed)
815 ("zombies" . gnus-group-list-zombies)
816 ("matching" . gnus-group-list-matching)
817 ("post" . gnus-group-post-news)
818 ("mail" . gnus-group-mail)
819 ("rescan" . gnus-group-get-new-news)
820 ("browse-foreign" . gnus-group-browse-foreign)
821 ("exit" . gnus-group-exit)))
823 (defvar gnus-carpal-summary-buffer-buttons
825 ("read" . gnus-summary-mark-as-read-forward)
826 ("tick" . gnus-summary-tick-article-forward)
827 ("clear" . gnus-summary-clear-mark-forward)
828 ("expirable" . gnus-summary-mark-as-expirable)
830 ("scroll" . gnus-summary-next-page)
831 ("next-unread" . gnus-summary-next-unread-article)
832 ("prev-unread" . gnus-summary-prev-unread-article)
833 ("first" . gnus-summary-first-unread-article)
834 ("best" . gnus-summary-best-unread-article)
836 ("headers" . gnus-summary-toggle-header)
837 ("uudecode" . gnus-uu-decode-uu)
838 ("enter-digest" . gnus-summary-enter-digest-group)
839 ("fetch-parent" . gnus-summary-refer-parent-article)
841 ("move" . gnus-summary-move-article)
842 ("copy" . gnus-summary-copy-article)
843 ("respool" . gnus-summary-respool-article)
845 ("lower" . gnus-summary-lower-thread)
846 ("kill" . gnus-summary-kill-thread)
848 ("post" . gnus-summary-post-news)
849 ("mail" . gnus-summary-mail)
850 ("followup" . gnus-summary-followup-with-original)
851 ("reply" . gnus-summary-reply-with-original)
852 ("cancel" . gnus-summary-cancel-article)
854 ("exit" . gnus-summary-exit)
855 ("fed-up" . gnus-summary-catchup-and-goto-next-group)))
857 (defvar gnus-carpal-server-buffer-buttons
858 '(("add" . gnus-server-add-server)
859 ("browse" . gnus-server-browse-server)
860 ("list" . gnus-server-list-servers)
861 ("kill" . gnus-server-kill-server)
862 ("yank" . gnus-server-yank-server)
863 ("copy" . gnus-server-copy-server)
864 ("exit" . gnus-server-exit)))
866 (defvar gnus-carpal-browse-buffer-buttons
867 '(("subscribe" . gnus-browse-unsubscribe-current-group)
868 ("exit" . gnus-browse-exit)))
870 (defvar gnus-carpal-group-buffer "*Carpal Group*")
871 (defvar gnus-carpal-summary-buffer "*Carpal Summary*")
872 (defvar gnus-carpal-server-buffer "*Carpal Server*")
873 (defvar gnus-carpal-browse-buffer "*Carpal Browse*")
875 (defvar gnus-carpal-attached-buffer nil)
877 (defvar gnus-carpal-mode-hook nil
878 "*Hook run in carpal mode buffers.")
880 (defvar gnus-carpal-button-face 'bold
881 "*Face used on carpal buttons.")
883 (defvar gnus-carpal-header-face 'bold-italic
884 "*Face used on carpal buffer headers.")
886 (defvar gnus-carpal-mode-map nil)
887 (put 'gnus-carpal-mode 'mode-class 'special)
889 (if gnus-carpal-mode-map
891 (setq gnus-carpal-mode-map (make-keymap))
892 (suppress-keymap gnus-carpal-mode-map)
893 (define-key gnus-carpal-mode-map " " 'gnus-carpal-select)
894 (define-key gnus-carpal-mode-map "\r" 'gnus-carpal-select)
895 (define-key gnus-carpal-mode-map gnus-mouse-2 'gnus-carpal-mouse-select))
897 (defun gnus-carpal-mode ()
898 "Major mode for clicking buttons.
900 All normal editing commands are switched off.
901 \\<gnus-carpal-mode-map>
902 The following commands are available:
904 \\{gnus-carpal-mode-map}"
906 (kill-all-local-variables)
907 (setq mode-line-modified "-- ")
908 (setq major-mode 'gnus-carpal-mode)
909 (setq mode-name "Gnus Carpal")
910 (setq mode-line-process nil)
911 (use-local-map gnus-carpal-mode-map)
912 (buffer-disable-undo (current-buffer))
913 (setq buffer-read-only t)
914 (make-local-variable 'gnus-carpal-attached-buffer)
915 (run-hooks 'gnus-carpal-mode-hook))
917 (defun gnus-carpal-setup-buffer (type)
918 (let ((buffer (symbol-value (intern (format "gnus-carpal-%s-buffer" type)))))
919 (if (get-buffer buffer)
922 (set-buffer (get-buffer-create buffer))
924 (setq gnus-carpal-attached-buffer
925 (intern (format "gnus-%s-buffer" type)))
926 (gnus-add-current-to-buffer-list)
927 (let ((buttons (symbol-value
928 (intern (format "gnus-carpal-%s-buffer-buttons"
930 (buffer-read-only nil)
933 (setq button (car buttons)
934 buttons (cdr buttons))
936 (gnus-set-text-properties
938 (prog2 (insert button) (point) (insert " "))
939 (list 'face gnus-carpal-header-face))
940 (gnus-set-text-properties
942 (prog2 (insert (car button)) (point) (insert " "))
943 (list 'gnus-callback (cdr button)
944 'face gnus-carpal-button-face
945 gnus-mouse-face-prop 'highlight))))
946 (let ((fill-column (- (window-width) 2)))
947 (fill-region (point-min) (point-max)))
948 (set-window-point (get-buffer-window (current-buffer))
951 (defun gnus-carpal-select ()
952 "Select the button under point."
954 (let ((func (get-text-property (point) 'gnus-callback)))
957 (pop-to-buffer (symbol-value gnus-carpal-attached-buffer))
958 (call-interactively func))))
960 (defun gnus-carpal-mouse-select (event)
961 "Select the button under the mouse pointer."
963 (mouse-set-point event)
964 (gnus-carpal-select))
966 ;;; Allow redefinition of functions.
971 ;;; gnus-salt.el ends here