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 (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 "X" gnus-pick-start-reading
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-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-regexp t]
97 ["Buffer" gnus-uu-unmark-buffer 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 (unless (assq 'gnus-pick-mode minor-mode-alist)
124 (push '(gnus-pick-mode " Pick") minor-mode-alist))
125 (unless (assq 'gnus-pick-mode minor-mode-map-alist)
126 (push (cons 'gnus-pick-mode gnus-pick-mode-map)
127 minor-mode-map-alist))
128 (run-hooks 'gnus-pick-mode-hook))))
130 (defun gnus-pick-setup-message ()
131 "Make Message do the right thing on exit."
132 (when (and (gnus-buffer-live-p gnus-summary-buffer)
134 (set-buffer gnus-summary-buffer)
137 '(gnus-configure-windows 'pick t) 'send 'exit 'postpone 'kill)))
139 (defvar gnus-pick-line-number 1)
140 (defun gnus-pick-line-number ()
141 "Return the current line number."
143 (setq gnus-pick-line-number 1)
144 (incf gnus-pick-line-number)))
146 (defun gnus-pick-start-reading (&optional catch-up)
147 "Start reading the picked articles.
148 If given a prefix, mark all unpicked articles as read."
150 (if gnus-newsgroup-processable
152 (gnus-summary-limit-to-articles nil)
153 (when (or catch-up gnus-mark-unpicked-articles-as-read)
154 (gnus-summary-limit-mark-excluded-as-read))
155 (gnus-summary-first-article)
156 (gnus-configure-windows
157 (if gnus-pick-display-summary 'article 'pick) t))
158 (if gnus-pick-elegant-flow
160 (when (or catch-up gnus-mark-unpicked-articles-as-read)
161 (gnus-summary-limit-mark-excluded-as-read))
162 (if (gnus-group-quit-config gnus-newsgroup-name)
164 (gnus-summary-next-group)))
165 (error "No articles have been picked"))))
167 (defun gnus-pick-article (&optional arg)
168 "Pick the article on the current line.
169 If ARG, pick the article on that line instead."
174 (goto-char (point-min))
175 (when (zerop (forward-line (1- (prefix-numeric-value arg))))
178 (gnus-error 2 "No such line: %s" arg)
180 (gnus-summary-mark-as-processable 1))
182 (defun gnus-pick-mouse-pick (e)
186 (gnus-summary-mark-as-processable 1)))
188 (defun gnus-pick-mouse-pick-region (start-event)
189 "Pick articles that the mouse is dragged over.
190 This must be bound to a button-down mouse event."
192 (mouse-minibuffer-check start-event)
193 (let* ((echo-keystrokes 0)
194 (start-posn (event-start start-event))
195 (start-point (posn-point start-posn))
196 (start-line (1+ (count-lines 1 start-point)))
197 (start-window (posn-window start-posn))
198 (start-frame (window-frame start-window))
199 (bounds (window-edges start-window))
201 (bottom (if (window-minibuffer-p start-window)
203 ;; Don't count the mode line.
204 (1- (nth 3 bounds))))
205 (click-count (1- (event-click-count start-event))))
206 (setq mouse-selection-click-count click-count)
207 (setq mouse-selection-click-count-buffer (current-buffer))
208 (mouse-set-point start-event)
209 ;; In case the down click is in the middle of some intangible text,
210 ;; use the end of that text, and put it in START-POINT.
211 (when (< (point) start-point)
212 (goto-char start-point))
214 (setq start-point (point))
215 ;; end-of-range is used only in the single-click case.
216 ;; It is the place where the drag has reached so far
217 ;; (but not outside the window where the drag started).
218 (let (event end end-point last-end-point (end-of-range (point)))
221 (setq event (read-event))
222 (or (mouse-movement-p event)
223 (eq (car-safe event) 'switch-frame)))
224 (if (eq (car-safe event) 'switch-frame)
226 (setq end (event-end event)
227 end-point (posn-point end))
229 (setq last-end-point end-point))
232 ;; Are we moving within the original window?
233 ((and (eq (posn-window end) start-window)
234 (integer-or-marker-p end-point))
235 ;; Go to START-POINT first, so that when we move to END-POINT,
236 ;; if it's in the middle of intangible text,
237 ;; point jumps in the direction away from START-POINT.
238 (goto-char start-point)
239 (goto-char end-point)
241 ;; In case the user moved his mouse really fast, pick
242 ;; articles on the line between this one and the last one.
243 (let* ((this-line (1+ (count-lines 1 end-point)))
244 (min-line (min this-line start-line))
245 (max-line (max this-line start-line)))
246 (while (< min-line max-line)
249 (setq min-line (1+ min-line)))
250 (setq start-line this-line))
251 (when (zerop (% click-count 3))
252 (setq end-of-range (point))))
254 (let ((mouse-row (cdr (cdr (mouse-position)))))
258 (mouse-scroll-subr start-window (- mouse-row top)))
259 ((>= mouse-row bottom)
260 (mouse-scroll-subr start-window
261 (1+ (- mouse-row bottom)))))))))))
263 (let ((fun (key-binding (vector (car event)))))
264 ;; Run the binding of the terminating up-event, if possible.
265 ;; In the case of a multiple click, it gives the wrong results,
266 ;; because it would fail to set up a region.
268 ;; (and (= (mod mouse-selection-click-count 3) 0) (fboundp fun))
269 ;; In this case, we can just let the up-event execute normally.
270 (let ((end (event-end event)))
271 ;; Set the position in the event before we replay it,
272 ;; because otherwise it may have a position in the wrong
274 (setcar (cdr end) end-of-range)
275 ;; Delete the overlay before calling the function,
276 ;; because delete-overlay increases buffer-modified-tick.
277 (push event unread-command-events))))))))
279 (defun gnus-pick-next-page ()
280 "Go to the next page. If at the end of the buffer, start reading articles."
282 (let ((scroll-in-place nil))
285 (end-of-buffer (gnus-pick-start-reading)))))
291 (defvar gnus-binary-mode nil
292 "Minor mode for providing a binary group interface in Gnus summary buffers.")
294 (defvar gnus-binary-mode-hook nil
295 "Hook run in summary binary mode buffers.")
297 (defvar gnus-binary-mode-map nil)
299 (unless gnus-binary-mode-map
300 (setq gnus-binary-mode-map (make-sparse-keymap))
304 "g" gnus-binary-show-article))
306 (defun gnus-binary-make-menu-bar ()
307 (unless (boundp 'gnus-binary-menu)
309 gnus-binary-menu gnus-binary-mode-map ""
311 ["Switch binary mode off" gnus-binary-mode t]))))
313 (defun gnus-binary-mode (&optional arg)
314 "Minor mode for providing a binary group interface in Gnus summary buffers."
316 (when (eq major-mode 'gnus-summary-mode)
317 (make-local-variable 'gnus-binary-mode)
318 (setq gnus-binary-mode
319 (if (null arg) (not gnus-binary-mode)
320 (> (prefix-numeric-value arg) 0)))
321 (when gnus-binary-mode
322 ;; Make sure that we don't select any articles upon group entry.
323 (make-local-variable 'gnus-auto-select-first)
324 (setq gnus-auto-select-first nil)
325 (make-local-variable 'gnus-summary-display-article-function)
326 (setq gnus-summary-display-article-function 'gnus-binary-display-article)
328 (when (gnus-visual-p 'binary-menu 'menu)
329 (gnus-binary-make-menu-bar))
330 (unless (assq 'gnus-binary-mode minor-mode-alist)
331 (push '(gnus-binary-mode " Binary") minor-mode-alist))
332 (unless (assq 'gnus-binary-mode minor-mode-map-alist)
333 (push (cons 'gnus-binary-mode gnus-binary-mode-map)
334 minor-mode-map-alist))
335 (run-hooks 'gnus-binary-mode-hook))))
337 (defun gnus-binary-display-article (article &optional all-header)
338 "Run ARTICLE through the binary decode functions."
339 (when (gnus-summary-goto-subject article)
340 (let ((gnus-view-pseudos 'automatic))
341 (gnus-uu-decode-uu))))
343 (defun gnus-binary-show-article (&optional arg)
344 "Bypass the binary functions and show the article."
346 (let (gnus-summary-display-article-function)
347 (gnus-summary-show-article arg)))
353 (defvar gnus-tree-line-format "%(%[%3,3n%]%)"
354 "Format of tree elements.")
356 (defvar gnus-tree-minimize-window t
357 "If non-nil, minimize the tree buffer window.
358 If a number, never let the tree buffer grow taller than that number of
361 (defvar gnus-selected-tree-face 'modeline
362 "*Face used for highlighting selected articles in the thread tree.")
364 (defvar gnus-tree-brackets '((?\[ . ?\]) (?\( . ?\))
365 (?\{ . ?\}) (?< . ?>))
366 "Brackets used in tree nodes.")
368 (defvar gnus-tree-parent-child-edges '(?- ?\\ ?|)
369 "Characters used to connect parents with children.")
371 (defvar gnus-tree-mode-line-format "Gnus: %%b %S %Z"
372 "*The format specification for the tree mode line.")
374 (defvar gnus-generate-tree-function 'gnus-generate-vertical-tree
375 "*Function for generating a thread tree.
376 Two predefined functions are available:
377 `gnus-generate-horizontal-tree' and `gnus-generate-vertical-tree'.")
379 (defvar gnus-tree-mode-hook nil
380 "*Hook run in tree mode buffers.")
382 ;;; Internal variables.
384 (defvar gnus-tree-line-format-alist
385 `((?n gnus-tmp-name ?s)
386 (?f gnus-tmp-from ?s)
387 (?N gnus-tmp-number ?d)
388 (?\[ gnus-tmp-open-bracket ?c)
389 (?\] gnus-tmp-close-bracket ?c)
390 (?s gnus-tmp-subject ?s)))
392 (defvar gnus-tree-mode-line-format-alist gnus-summary-mode-line-format-alist)
394 (defvar gnus-tree-mode-line-format-spec nil)
395 (defvar gnus-tree-line-format-spec nil)
397 (defvar gnus-tree-node-length nil)
398 (defvar gnus-selected-tree-overlay nil)
400 (defvar gnus-tree-displayed-thread nil)
402 (defvar gnus-tree-mode-map nil)
403 (put 'gnus-tree-mode 'mode-class 'special)
405 (unless gnus-tree-mode-map
406 (setq gnus-tree-mode-map (make-keymap))
407 (suppress-keymap gnus-tree-mode-map)
410 "\r" gnus-tree-select-article
411 gnus-mouse-2 gnus-tree-pick-article
412 "\C-?" gnus-tree-read-summary-keys
414 "\C-c\C-i" gnus-info-find-node)
416 (substitute-key-definition
417 'undefined 'gnus-tree-read-summary-keys gnus-tree-mode-map))
419 (defun gnus-tree-make-menu-bar ()
420 (unless (boundp 'gnus-tree-menu)
422 gnus-tree-menu gnus-tree-mode-map ""
424 ["Select article" gnus-tree-select-article t]))))
426 (defun gnus-tree-mode ()
427 "Major mode for displaying thread trees."
429 (setq gnus-tree-mode-line-format-spec
430 (gnus-parse-format gnus-tree-mode-line-format
431 gnus-summary-mode-line-format-alist))
432 (setq gnus-tree-line-format-spec
433 (gnus-parse-format gnus-tree-line-format
434 gnus-tree-line-format-alist t))
435 (when (gnus-visual-p 'tree-menu 'menu)
436 (gnus-tree-make-menu-bar))
437 (kill-all-local-variables)
438 (gnus-simplify-mode-line)
439 (setq mode-name "Tree")
440 (setq major-mode 'gnus-tree-mode)
441 (use-local-map gnus-tree-mode-map)
442 (buffer-disable-undo (current-buffer))
443 (setq buffer-read-only t)
444 (setq truncate-lines t)
446 (gnus-set-work-buffer)
447 (gnus-tree-node-insert (make-mail-header "") nil)
448 (setq gnus-tree-node-length (1- (point))))
449 (run-hooks 'gnus-tree-mode-hook))
451 (defun gnus-tree-read-summary-keys (&optional arg)
452 "Read a summary buffer key sequence and execute it."
454 (let ((buf (current-buffer))
456 (gnus-article-read-summary-keys arg nil t)
457 (when (setq win (get-buffer-window buf))
459 (when gnus-selected-tree-overlay
460 (goto-char (or (gnus-overlay-end gnus-selected-tree-overlay) 1)))
461 (gnus-tree-minimize))))
463 (defun gnus-tree-select-article (article)
464 "Select the article under point, if any."
465 (interactive (list (gnus-tree-article-number)))
466 (let ((buf (current-buffer)))
469 (set-buffer gnus-summary-buffer)
470 (gnus-summary-goto-article article))
471 (select-window (get-buffer-window buf)))))
473 (defun gnus-tree-pick-article (e)
474 "Select the article under the mouse pointer."
477 (gnus-tree-select-article (gnus-tree-article-number)))
479 (defun gnus-tree-article-number ()
480 (get-text-property (point) 'gnus-number))
482 (defun gnus-tree-article-region (article)
483 "Return a cons with BEG and END of the article region."
484 (let ((pos (text-property-any (point-min) (point-max) 'gnus-number article)))
486 (cons pos (next-single-property-change pos 'gnus-number)))))
488 (defun gnus-tree-goto-article (article)
489 (let ((pos (text-property-any (point-min) (point-max) 'gnus-number article)))
493 (defun gnus-tree-recenter ()
494 "Center point in the tree window."
495 (let ((selected (selected-window))
496 (tree-window (get-buffer-window gnus-tree-buffer t)))
498 (select-window tree-window)
499 (when gnus-selected-tree-overlay
500 (goto-char (or (gnus-overlay-end gnus-selected-tree-overlay) 1)))
501 (let* ((top (cond ((< (window-height) 4) 0)
502 ((< (window-height) 7) 1)
504 (height (1- (window-height)))
505 (bottom (save-excursion (goto-char (point-max))
506 (forward-line (- height))
508 ;; Set the window start to either `bottom', which is the biggest
509 ;; possible valid number, or the second line from the top,
510 ;; whichever is the least.
512 tree-window (min bottom (save-excursion
513 (forward-line (- top)) (point)))))
514 (select-window selected))))
516 (defun gnus-get-tree-buffer ()
517 "Return the tree buffer properly initialized."
519 (set-buffer (get-buffer-create gnus-tree-buffer))
520 (unless (eq major-mode 'gnus-tree-mode)
521 (gnus-add-current-to-buffer-list)
525 (defun gnus-tree-minimize ()
526 (when (and gnus-tree-minimize-window
527 (not (one-window-p)))
530 (walk-windows (lambda (window) (incf windows)))
533 (* window-min-height (1- windows))
535 (let* ((window-min-height 2)
536 (height (count-lines (point-min) (point-max)))
537 (min (max (1- window-min-height) height))
538 (tot (if (numberp gnus-tree-minimize-window)
539 (min gnus-tree-minimize-window min)
541 (win (get-buffer-window (current-buffer)))
542 (wh (and win (1- (window-height win)))))
543 (setq tot (min tot tot-win-height))
546 (let ((selected (selected-window)))
547 (when (ignore-errors (select-window win))
548 (enlarge-window (- tot wh))
549 (select-window selected))))))))
551 ;;; Generating the tree.
553 (defun gnus-tree-node-insert (header sparse &optional adopted)
554 (let* ((dummy (stringp header))
555 (header (if (vectorp header) header
557 (setq header (make-mail-header "*****"))
558 (mail-header-set-number header 0)
559 (mail-header-set-lines header 0)
560 (mail-header-set-chars header 0)
562 (gnus-tmp-from (mail-header-from header))
563 (gnus-tmp-subject (mail-header-subject header))
564 (gnus-tmp-number (mail-header-number header))
567 ((string-match "(.+)" gnus-tmp-from)
568 (substring gnus-tmp-from
569 (1+ (match-beginning 0)) (1- (match-end 0))))
570 ((string-match "<[^>]+> *$" gnus-tmp-from)
571 (let ((beg (match-beginning 0)))
572 (or (and (string-match "^\"[^\"]*\"" gnus-tmp-from)
573 (substring gnus-tmp-from (1+ (match-beginning 0))
575 (substring gnus-tmp-from 0 beg))))
576 ((memq gnus-tmp-number sparse)
579 (gnus-tmp-open-bracket
580 (cond ((memq gnus-tmp-number sparse)
581 (caadr gnus-tree-brackets))
582 (dummy (caaddr gnus-tree-brackets))
583 (adopted (car (nth 3 gnus-tree-brackets)))
584 (t (caar gnus-tree-brackets))))
585 (gnus-tmp-close-bracket
586 (cond ((memq gnus-tmp-number sparse)
587 (cdadr gnus-tree-brackets))
588 (adopted (cdr (nth 3 gnus-tree-brackets)))
590 (cdaddr gnus-tree-brackets))
591 (t (cdar gnus-tree-brackets))))
592 (buffer-read-only nil)
594 (gnus-add-text-properties
596 (setq end (progn (eval gnus-tree-line-format-spec) (point)))
597 (list 'gnus-number gnus-tmp-number))
598 (when (or t (gnus-visual-p 'tree-highlight 'highlight))
599 (gnus-tree-highlight-node gnus-tmp-number beg end))))
601 (defun gnus-tree-highlight-node (article beg end)
602 "Highlight current line according to `gnus-summary-highlight'."
603 (let ((list gnus-summary-highlight)
606 (set-buffer gnus-summary-buffer)
607 (let* ((score (or (cdr (assq article gnus-newsgroup-scored))
608 gnus-summary-default-score 0))
609 (default gnus-summary-default-score)
610 (mark (or (gnus-summary-article-mark article) gnus-unread-mark)))
611 ;; Eval the cars of the lists until we find a match.
613 (not (eval (caar list))))
614 (setq list (cdr list)))))
615 (unless (eq (setq face (cdar list)) (get-text-property beg 'face))
616 (gnus-put-text-property
618 (if (boundp face) (symbol-value face) face)))))
620 (defun gnus-tree-indent (level)
621 (insert (make-string (1- (* (1+ gnus-tree-node-length) level)) ? )))
623 (defvar gnus-tmp-limit)
624 (defvar gnus-tmp-sparse)
625 (defvar gnus-tmp-indent)
627 (defun gnus-generate-tree (thread)
628 "Generate a thread tree for THREAD."
630 (set-buffer (gnus-get-tree-buffer))
631 (let ((buffer-read-only nil)
634 (funcall gnus-generate-tree-function thread 0)
635 (gnus-set-mode-line 'tree)
636 (goto-char (point-min))
639 (let ((selected (selected-window)))
640 (when (get-buffer-window (set-buffer gnus-tree-buffer) t)
641 (select-window (get-buffer-window (set-buffer gnus-tree-buffer) t))
642 (gnus-horizontal-recenter)
643 (select-window selected))))))
645 (defun gnus-generate-horizontal-tree (thread level &optional dummyp adopted)
646 "Generate a horizontal tree."
647 (let* ((dummy (stringp (car thread)))
649 (memq (mail-header-number (car thread)) gnus-tmp-limit)))
652 ;; We don't want this article.
653 (setq thread (cdr thread))
655 ;; Not the first article on the line, so we insert a "-".
656 (insert (car gnus-tree-parent-child-edges))
657 ;; If the level isn't zero, then we insert some indentation.
658 (unless (zerop level)
659 (gnus-tree-indent level)
660 (insert (cadr gnus-tree-parent-child-edges))
661 (setq col (- (setq beg (point)) (gnus-point-at-bol) 1))
662 ;; Draw "|" lines upwards.
666 (= (following-char) ? ))
668 (insert (caddr gnus-tree-parent-child-edges)))
671 ;; Insert the article node.
672 (gnus-tree-node-insert (pop thread) gnus-tmp-sparse adopted))
674 ;; End of the thread, so we go to the next line.
677 ;; Recurse downwards in all children of this article.
679 (gnus-generate-horizontal-tree
680 (pop thread) (if do (1+ level) level)
681 (or dummyp dummy) dummy)))))
683 (defsubst gnus-tree-indent-vertical ()
684 (let ((len (- (* (1+ gnus-tree-node-length) gnus-tmp-indent)
685 (- (point) (gnus-point-at-bol)))))
687 (insert (make-string len ? )))))
689 (defsubst gnus-tree-forward-line (n)
690 (while (>= (decf n) 0)
691 (unless (zerop (forward-line 1))
696 (defun gnus-generate-vertical-tree (thread level &optional dummyp adopted)
697 "Generate a vertical tree."
698 (let* ((dummy (stringp (car thread)))
701 (memq (mail-header-number (car thread))
705 ;; We don't want this article.
706 (setq thread (cdr thread))
707 (if (not (save-excursion (beginning-of-line) (bobp)))
708 ;; Not the first article on the line, so we insert a "-".
710 (gnus-tree-indent-vertical)
711 (insert (make-string (/ gnus-tree-node-length 2) ? ))
712 (insert (caddr gnus-tree-parent-child-edges))
713 (gnus-tree-forward-line 1))
714 ;; If the level isn't zero, then we insert some indentation.
715 (unless (zerop gnus-tmp-indent)
716 (gnus-tree-forward-line (1- (* 2 level)))
717 (gnus-tree-indent-vertical)
719 (insert (cadr gnus-tree-parent-child-edges))
721 ;; Draw "-" lines leftwards.
725 (= (following-char) ? ))
727 (insert (car gnus-tree-parent-child-edges)))
729 (gnus-tree-forward-line 1)))
731 ;; Insert the article node.
732 (gnus-tree-indent-vertical)
733 (gnus-tree-node-insert (pop thread) gnus-tmp-sparse adopted)
734 (gnus-tree-forward-line 1))
736 ;; End of the thread, so we go to the next line.
738 (goto-char (point-min))
740 (incf gnus-tmp-indent))
741 ;; Recurse downwards in all children of this article.
743 (gnus-generate-vertical-tree
744 (pop thread) (if do (1+ level) level)
745 (or dummyp dummy) dummy)))))
747 ;;; Interface functions.
749 (defun gnus-possibly-generate-tree (article &optional force)
750 "Generate the thread tree for ARTICLE if it isn't displayed already."
751 (when (save-excursion
752 (set-buffer gnus-summary-buffer)
755 (vectorp (gnus-summary-article-header article))))
757 (let ((top (save-excursion
758 (set-buffer gnus-summary-buffer)
762 (gnus-summary-article-header article))
764 (gnus-tmp-limit gnus-newsgroup-limit)
765 (gnus-tmp-sparse gnus-newsgroup-sparse))
767 (not (eq top gnus-tree-displayed-thread)))
768 (gnus-generate-tree top)
769 (setq gnus-tree-displayed-thread top))))))
771 (defun gnus-tree-open (group)
772 (gnus-get-tree-buffer))
774 (defun gnus-tree-close (group)
775 ;(gnus-kill-buffer gnus-tree-buffer)
778 (defun gnus-highlight-selected-tree (article)
779 "Highlight the selected article in the tree."
780 (let ((buf (current-buffer))
782 (set-buffer gnus-tree-buffer)
783 (when (setq region (gnus-tree-article-region article))
784 (when (or (not gnus-selected-tree-overlay)
785 (gnus-extent-detached-p gnus-selected-tree-overlay))
786 ;; Create a new overlay.
788 (setq gnus-selected-tree-overlay (gnus-make-overlay 1 2))
789 'face gnus-selected-tree-face))
790 ;; Move the overlay to the article.
792 gnus-selected-tree-overlay (goto-char (car region)) (cdr region))
795 (let ((selected (selected-window)))
796 (when (get-buffer-window (set-buffer gnus-tree-buffer) t)
797 (select-window (get-buffer-window (set-buffer gnus-tree-buffer) t))
798 (gnus-horizontal-recenter)
799 (select-window selected))))
800 ;; If we remove this save-excursion, it updates the wrong mode lines?!?
802 (set-buffer gnus-tree-buffer)
803 (gnus-set-mode-line 'tree))
806 (defun gnus-tree-highlight-article (article face)
808 (set-buffer (gnus-get-tree-buffer))
810 (when (setq region (gnus-tree-article-region article))
811 (gnus-put-text-property (car region) (cdr region) 'face face)
813 (get-buffer-window (current-buffer) t) (cdr region))))))
819 (defvar gnus-carpal-group-buffer-buttons
820 '(("next" . gnus-group-next-unread-group)
821 ("prev" . gnus-group-prev-unread-group)
822 ("read" . gnus-group-read-group)
823 ("select" . gnus-group-select-group)
824 ("catch-up" . gnus-group-catchup-current)
825 ("new-news" . gnus-group-get-new-news-this-group)
826 ("toggle-sub" . gnus-group-unsubscribe-current-group)
827 ("subscribe" . gnus-group-unsubscribe-group)
828 ("kill" . gnus-group-kill-group)
829 ("yank" . gnus-group-yank-group)
830 ("describe" . gnus-group-describe-group)
832 ("subscribed" . gnus-group-list-groups)
833 ("all" . gnus-group-list-all-groups)
834 ("killed" . gnus-group-list-killed)
835 ("zombies" . gnus-group-list-zombies)
836 ("matching" . gnus-group-list-matching)
837 ("post" . gnus-group-post-news)
838 ("mail" . gnus-group-mail)
839 ("rescan" . gnus-group-get-new-news)
840 ("browse-foreign" . gnus-group-browse-foreign)
841 ("exit" . gnus-group-exit)))
843 (defvar gnus-carpal-summary-buffer-buttons
845 ("read" . gnus-summary-mark-as-read-forward)
846 ("tick" . gnus-summary-tick-article-forward)
847 ("clear" . gnus-summary-clear-mark-forward)
848 ("expirable" . gnus-summary-mark-as-expirable)
850 ("scroll" . gnus-summary-next-page)
851 ("next-unread" . gnus-summary-next-unread-article)
852 ("prev-unread" . gnus-summary-prev-unread-article)
853 ("first" . gnus-summary-first-unread-article)
854 ("best" . gnus-summary-best-unread-article)
856 ("headers" . gnus-summary-toggle-header)
857 ("uudecode" . gnus-uu-decode-uu)
858 ("enter-digest" . gnus-summary-enter-digest-group)
859 ("fetch-parent" . gnus-summary-refer-parent-article)
861 ("move" . gnus-summary-move-article)
862 ("copy" . gnus-summary-copy-article)
863 ("respool" . gnus-summary-respool-article)
865 ("lower" . gnus-summary-lower-thread)
866 ("kill" . gnus-summary-kill-thread)
868 ("post" . gnus-summary-post-news)
869 ("mail" . gnus-summary-mail)
870 ("followup" . gnus-summary-followup-with-original)
871 ("reply" . gnus-summary-reply-with-original)
872 ("cancel" . gnus-summary-cancel-article)
874 ("exit" . gnus-summary-exit)
875 ("fed-up" . gnus-summary-catchup-and-goto-next-group)))
877 (defvar gnus-carpal-server-buffer-buttons
878 '(("add" . gnus-server-add-server)
879 ("browse" . gnus-server-browse-server)
880 ("list" . gnus-server-list-servers)
881 ("kill" . gnus-server-kill-server)
882 ("yank" . gnus-server-yank-server)
883 ("copy" . gnus-server-copy-server)
884 ("exit" . gnus-server-exit)))
886 (defvar gnus-carpal-browse-buffer-buttons
887 '(("subscribe" . gnus-browse-unsubscribe-current-group)
888 ("exit" . gnus-browse-exit)))
890 (defvar gnus-carpal-group-buffer "*Carpal Group*")
891 (defvar gnus-carpal-summary-buffer "*Carpal Summary*")
892 (defvar gnus-carpal-server-buffer "*Carpal Server*")
893 (defvar gnus-carpal-browse-buffer "*Carpal Browse*")
895 (defvar gnus-carpal-attached-buffer nil)
897 (defvar gnus-carpal-mode-hook nil
898 "*Hook run in carpal mode buffers.")
900 (defvar gnus-carpal-button-face 'bold
901 "*Face used on carpal buttons.")
903 (defvar gnus-carpal-header-face 'bold-italic
904 "*Face used on carpal buffer headers.")
906 (defvar gnus-carpal-mode-map nil)
907 (put 'gnus-carpal-mode 'mode-class 'special)
909 (if gnus-carpal-mode-map
911 (setq gnus-carpal-mode-map (make-keymap))
912 (suppress-keymap gnus-carpal-mode-map)
913 (define-key gnus-carpal-mode-map " " 'gnus-carpal-select)
914 (define-key gnus-carpal-mode-map "\r" 'gnus-carpal-select)
915 (define-key gnus-carpal-mode-map gnus-mouse-2 'gnus-carpal-mouse-select))
917 (defun gnus-carpal-mode ()
918 "Major mode for clicking buttons.
920 All normal editing commands are switched off.
921 \\<gnus-carpal-mode-map>
922 The following commands are available:
924 \\{gnus-carpal-mode-map}"
926 (kill-all-local-variables)
927 (setq mode-line-modified "-- ")
928 (setq major-mode 'gnus-carpal-mode)
929 (setq mode-name "Gnus Carpal")
930 (setq mode-line-process nil)
931 (use-local-map gnus-carpal-mode-map)
932 (buffer-disable-undo (current-buffer))
933 (setq buffer-read-only t)
934 (make-local-variable 'gnus-carpal-attached-buffer)
935 (run-hooks 'gnus-carpal-mode-hook))
937 (defun gnus-carpal-setup-buffer (type)
938 (let ((buffer (symbol-value (intern (format "gnus-carpal-%s-buffer" type)))))
939 (if (get-buffer buffer)
942 (set-buffer (get-buffer-create buffer))
944 (setq gnus-carpal-attached-buffer
945 (intern (format "gnus-%s-buffer" type)))
946 (gnus-add-current-to-buffer-list)
947 (let ((buttons (symbol-value
948 (intern (format "gnus-carpal-%s-buffer-buttons"
950 (buffer-read-only nil)
953 (setq button (car buttons)
954 buttons (cdr buttons))
956 (gnus-set-text-properties
958 (prog2 (insert button) (point) (insert " "))
959 (list 'face gnus-carpal-header-face))
960 (gnus-set-text-properties
962 (prog2 (insert (car button)) (point) (insert " "))
963 (list 'gnus-callback (cdr button)
964 'face gnus-carpal-button-face
965 gnus-mouse-face-prop 'highlight))))
966 (let ((fill-column (- (window-width) 2)))
967 (fill-region (point-min) (point-max)))
968 (set-window-point (get-buffer-window (current-buffer))
971 (defun gnus-carpal-select ()
972 "Select the button under point."
974 (let ((func (get-text-property (point) 'gnus-callback)))
977 (pop-to-buffer (symbol-value gnus-carpal-attached-buffer))
978 (call-interactively func))))
980 (defun gnus-carpal-mouse-select (event)
981 "Select the button under the mouse pointer."
983 (mouse-set-point event)
984 (gnus-carpal-select))
986 ;;; Allow redefinition of functions.
991 ;;; gnus-salt.el ends here