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)
116 (set (make-local-variable 'gnus-summary-goto-unread) 'never)
118 (when (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-article)
144 (gnus-configure-windows
145 (if gnus-pick-display-summary 'article 'pick) t))
146 (if gnus-pick-elegant-flow
147 (if (gnus-group-quit-config gnus-newsgroup-name)
149 (gnus-summary-next-group))
150 (error "No articles have been picked"))))
152 (defun gnus-pick-article (&optional arg)
153 "Pick the article on the current line.
154 If ARG, pick the article on that line instead."
159 (goto-char (point-min))
160 (when (zerop (forward-line (1- (prefix-numeric-value arg))))
163 (gnus-error 2 "No such line: %s" arg)
165 (gnus-summary-mark-as-processable 1))
167 (defun gnus-pick-mouse-pick (e)
171 (gnus-summary-mark-as-processable 1)))
173 (defun gnus-pick-mouse-pick-region (start-event)
174 "Pick articles that the mouse is dragged over.
175 This must be bound to a button-down mouse event."
177 (mouse-minibuffer-check start-event)
178 (let* ((echo-keystrokes 0)
179 (start-posn (event-start start-event))
180 (start-point (posn-point start-posn))
181 (start-line (1+ (count-lines 1 start-point)))
182 (start-window (posn-window start-posn))
183 (start-frame (window-frame start-window))
184 (bounds (window-edges start-window))
186 (bottom (if (window-minibuffer-p start-window)
188 ;; Don't count the mode line.
189 (1- (nth 3 bounds))))
190 (click-count (1- (event-click-count start-event))))
191 (setq mouse-selection-click-count click-count)
192 (setq mouse-selection-click-count-buffer (current-buffer))
193 (mouse-set-point start-event)
194 ;; In case the down click is in the middle of some intangible text,
195 ;; use the end of that text, and put it in START-POINT.
196 (when (< (point) start-point)
197 (goto-char start-point))
199 (setq start-point (point))
200 ;; end-of-range is used only in the single-click case.
201 ;; It is the place where the drag has reached so far
202 ;; (but not outside the window where the drag started).
203 (let (event end end-point last-end-point (end-of-range (point)))
206 (setq event (read-event))
207 (or (mouse-movement-p event)
208 (eq (car-safe event) 'switch-frame)))
209 (if (eq (car-safe event) 'switch-frame)
211 (setq end (event-end event)
212 end-point (posn-point end))
214 (setq last-end-point end-point))
217 ;; Are we moving within the original window?
218 ((and (eq (posn-window end) start-window)
219 (integer-or-marker-p end-point))
220 ;; Go to START-POINT first, so that when we move to END-POINT,
221 ;; if it's in the middle of intangible text,
222 ;; point jumps in the direction away from START-POINT.
223 (goto-char start-point)
224 (goto-char end-point)
226 ;; In case the user moved his mouse really fast, pick
227 ;; articles on the line between this one and the last one.
228 (let* ((this-line (1+ (count-lines 1 end-point)))
229 (min-line (min this-line start-line))
230 (max-line (max this-line start-line)))
231 (while (< min-line max-line)
234 (setq min-line (1+ min-line)))
235 (setq start-line this-line))
236 (when (zerop (% click-count 3))
237 (setq end-of-range (point))))
239 (let ((mouse-row (cdr (cdr (mouse-position)))))
243 (mouse-scroll-subr start-window (- mouse-row top)))
244 ((>= mouse-row bottom)
245 (mouse-scroll-subr start-window
246 (1+ (- mouse-row bottom)))))))))))
248 (let ((fun (key-binding (vector (car event)))))
249 ;; Run the binding of the terminating up-event, if possible.
250 ;; In the case of a multiple click, it gives the wrong results,
251 ;; because it would fail to set up a region.
253 ;; (and (= (mod mouse-selection-click-count 3) 0) (fboundp fun))
254 ;; In this case, we can just let the up-event execute normally.
255 (let ((end (event-end event)))
256 ;; Set the position in the event before we replay it,
257 ;; because otherwise it may have a position in the wrong
259 (setcar (cdr end) end-of-range)
260 ;; Delete the overlay before calling the function,
261 ;; because delete-overlay increases buffer-modified-tick.
262 (push event unread-command-events))))))))
264 (defun gnus-pick-next-page ()
265 "Go to the next page. If at the end of the buffer, start reading articles."
267 (let ((scroll-in-place nil))
270 (end-of-buffer (gnus-pick-start-reading)))))
276 (defvar gnus-binary-mode nil
277 "Minor mode for providing a binary group interface in Gnus summary buffers.")
279 (defvar gnus-binary-mode-hook nil
280 "Hook run in summary binary mode buffers.")
282 (defvar gnus-binary-mode-map nil)
284 (unless gnus-binary-mode-map
285 (setq gnus-binary-mode-map (make-sparse-keymap))
289 "g" gnus-binary-show-article))
291 (defun gnus-binary-make-menu-bar ()
292 (unless (boundp 'gnus-binary-menu)
294 gnus-binary-menu gnus-binary-mode-map ""
296 ["Switch binary mode off" gnus-binary-mode t]))))
298 (defun gnus-binary-mode (&optional arg)
299 "Minor mode for providing a binary group interface in Gnus summary buffers."
301 (when (eq major-mode 'gnus-summary-mode)
302 (make-local-variable 'gnus-binary-mode)
303 (setq gnus-binary-mode
304 (if (null arg) (not gnus-binary-mode)
305 (> (prefix-numeric-value arg) 0)))
306 (when gnus-binary-mode
307 ;; Make sure that we don't select any articles upon group entry.
308 (make-local-variable 'gnus-auto-select-first)
309 (setq gnus-auto-select-first nil)
310 (make-local-variable 'gnus-summary-display-article-function)
311 (setq gnus-summary-display-article-function 'gnus-binary-display-article)
313 (when (gnus-visual-p 'binary-menu 'menu)
314 (gnus-binary-make-menu-bar))
315 (unless (assq 'gnus-binary-mode minor-mode-alist)
316 (push '(gnus-binary-mode " Binary") minor-mode-alist))
317 (unless (assq 'gnus-binary-mode minor-mode-map-alist)
318 (push (cons 'gnus-binary-mode gnus-binary-mode-map)
319 minor-mode-map-alist))
320 (run-hooks 'gnus-binary-mode-hook))))
322 (defun gnus-binary-display-article (article &optional all-header)
323 "Run ARTICLE through the binary decode functions."
324 (when (gnus-summary-goto-subject article)
325 (let ((gnus-view-pseudos 'automatic))
326 (gnus-uu-decode-uu))))
328 (defun gnus-binary-show-article (&optional arg)
329 "Bypass the binary functions and show the article."
331 (let (gnus-summary-display-article-function)
332 (gnus-summary-show-article arg)))
338 (defvar gnus-tree-line-format "%(%[%3,3n%]%)"
339 "Format of tree elements.")
341 (defvar gnus-tree-minimize-window t
342 "If non-nil, minimize the tree buffer window.
343 If a number, never let the tree buffer grow taller than that number of
346 (defvar gnus-selected-tree-face 'modeline
347 "*Face used for highlighting selected articles in the thread tree.")
349 (defvar gnus-tree-brackets '((?\[ . ?\]) (?\( . ?\))
350 (?\{ . ?\}) (?< . ?>))
351 "Brackets used in tree nodes.")
353 (defvar gnus-tree-parent-child-edges '(?- ?\\ ?|)
354 "Characters used to connect parents with children.")
356 (defvar gnus-tree-mode-line-format "Gnus: %%b %S %Z"
357 "*The format specification for the tree mode line.")
359 (defvar gnus-generate-tree-function 'gnus-generate-vertical-tree
360 "*Function for generating a thread tree.
361 Two predefined functions are available:
362 `gnus-generate-horizontal-tree' and `gnus-generate-vertical-tree'.")
364 (defvar gnus-tree-mode-hook nil
365 "*Hook run in tree mode buffers.")
367 ;;; Internal variables.
369 (defvar gnus-tree-line-format-alist
370 `((?n gnus-tmp-name ?s)
371 (?f gnus-tmp-from ?s)
372 (?N gnus-tmp-number ?d)
373 (?\[ gnus-tmp-open-bracket ?c)
374 (?\] gnus-tmp-close-bracket ?c)
375 (?s gnus-tmp-subject ?s)))
377 (defvar gnus-tree-mode-line-format-alist gnus-summary-mode-line-format-alist)
379 (defvar gnus-tree-mode-line-format-spec nil)
380 (defvar gnus-tree-line-format-spec nil)
382 (defvar gnus-tree-node-length nil)
383 (defvar gnus-selected-tree-overlay nil)
385 (defvar gnus-tree-displayed-thread nil)
387 (defvar gnus-tree-mode-map nil)
388 (put 'gnus-tree-mode 'mode-class 'special)
390 (unless gnus-tree-mode-map
391 (setq gnus-tree-mode-map (make-keymap))
392 (suppress-keymap gnus-tree-mode-map)
395 "\r" gnus-tree-select-article
396 gnus-mouse-2 gnus-tree-pick-article
397 "\C-?" gnus-tree-read-summary-keys
399 "\C-c\C-i" gnus-info-find-node)
401 (substitute-key-definition
402 'undefined 'gnus-tree-read-summary-keys gnus-tree-mode-map))
404 (defun gnus-tree-make-menu-bar ()
405 (unless (boundp 'gnus-tree-menu)
407 gnus-tree-menu gnus-tree-mode-map ""
409 ["Select article" gnus-tree-select-article t]))))
411 (defun gnus-tree-mode ()
412 "Major mode for displaying thread trees."
414 (setq gnus-tree-mode-line-format-spec
415 (gnus-parse-format gnus-tree-mode-line-format
416 gnus-summary-mode-line-format-alist))
417 (setq gnus-tree-line-format-spec
418 (gnus-parse-format gnus-tree-line-format
419 gnus-tree-line-format-alist t))
420 (when (gnus-visual-p 'tree-menu 'menu)
421 (gnus-tree-make-menu-bar))
422 (kill-all-local-variables)
423 (gnus-simplify-mode-line)
424 (setq mode-name "Tree")
425 (setq major-mode 'gnus-tree-mode)
426 (use-local-map gnus-tree-mode-map)
427 (buffer-disable-undo (current-buffer))
428 (setq buffer-read-only t)
429 (setq truncate-lines t)
431 (gnus-set-work-buffer)
432 (gnus-tree-node-insert (make-mail-header "") nil)
433 (setq gnus-tree-node-length (1- (point))))
434 (run-hooks 'gnus-tree-mode-hook))
436 (defun gnus-tree-read-summary-keys (&optional arg)
437 "Read a summary buffer key sequence and execute it."
439 (let ((buf (current-buffer))
441 (gnus-article-read-summary-keys arg nil t)
442 (when (setq win (get-buffer-window buf))
444 (when gnus-selected-tree-overlay
445 (goto-char (or (gnus-overlay-end gnus-selected-tree-overlay) 1)))
446 (gnus-tree-minimize))))
448 (defun gnus-tree-select-article (article)
449 "Select the article under point, if any."
450 (interactive (list (gnus-tree-article-number)))
451 (let ((buf (current-buffer)))
454 (set-buffer gnus-summary-buffer)
455 (gnus-summary-goto-article article))
456 (select-window (get-buffer-window buf)))))
458 (defun gnus-tree-pick-article (e)
459 "Select the article under the mouse pointer."
462 (gnus-tree-select-article (gnus-tree-article-number)))
464 (defun gnus-tree-article-number ()
465 (get-text-property (point) 'gnus-number))
467 (defun gnus-tree-article-region (article)
468 "Return a cons with BEG and END of the article region."
469 (let ((pos (text-property-any (point-min) (point-max) 'gnus-number article)))
471 (cons pos (next-single-property-change pos 'gnus-number)))))
473 (defun gnus-tree-goto-article (article)
474 (let ((pos (text-property-any (point-min) (point-max) 'gnus-number article)))
478 (defun gnus-tree-recenter ()
479 "Center point in the tree window."
480 (let ((selected (selected-window))
481 (tree-window (get-buffer-window gnus-tree-buffer t)))
483 (select-window tree-window)
484 (when gnus-selected-tree-overlay
485 (goto-char (or (gnus-overlay-end gnus-selected-tree-overlay) 1)))
486 (let* ((top (cond ((< (window-height) 4) 0)
487 ((< (window-height) 7) 1)
489 (height (1- (window-height)))
490 (bottom (save-excursion (goto-char (point-max))
491 (forward-line (- height))
493 ;; Set the window start to either `bottom', which is the biggest
494 ;; possible valid number, or the second line from the top,
495 ;; whichever is the least.
497 tree-window (min bottom (save-excursion
498 (forward-line (- top)) (point)))))
499 (select-window selected))))
501 (defun gnus-get-tree-buffer ()
502 "Return the tree buffer properly initialized."
504 (set-buffer (get-buffer-create gnus-tree-buffer))
505 (unless (eq major-mode 'gnus-tree-mode)
506 (gnus-add-current-to-buffer-list)
510 (defun gnus-tree-minimize ()
511 (when (and gnus-tree-minimize-window
512 (not (one-window-p)))
515 (walk-windows (lambda (window) (incf windows)))
518 (* window-min-height (1- windows))
520 (let* ((window-min-height 2)
521 (height (count-lines (point-min) (point-max)))
522 (min (max (1- window-min-height) height))
523 (tot (if (numberp gnus-tree-minimize-window)
524 (min gnus-tree-minimize-window min)
526 (win (get-buffer-window (current-buffer)))
527 (wh (and win (1- (window-height win)))))
528 (setq tot (min tot tot-win-height))
531 (let ((selected (selected-window)))
532 (when (ignore-errors (select-window win))
533 (enlarge-window (- tot wh))
534 (select-window selected))))))))
536 ;;; Generating the tree.
538 (defun gnus-tree-node-insert (header sparse &optional adopted)
539 (let* ((dummy (stringp header))
540 (header (if (vectorp header) header
542 (setq header (make-mail-header "*****"))
543 (mail-header-set-number header 0)
544 (mail-header-set-lines header 0)
545 (mail-header-set-chars header 0)
547 (gnus-tmp-from (mail-header-from header))
548 (gnus-tmp-subject (mail-header-subject header))
549 (gnus-tmp-number (mail-header-number header))
552 ((string-match "(.+)" gnus-tmp-from)
553 (substring gnus-tmp-from
554 (1+ (match-beginning 0)) (1- (match-end 0))))
555 ((string-match "<[^>]+> *$" gnus-tmp-from)
556 (let ((beg (match-beginning 0)))
557 (or (and (string-match "^\"[^\"]*\"" gnus-tmp-from)
558 (substring gnus-tmp-from (1+ (match-beginning 0))
560 (substring gnus-tmp-from 0 beg))))
561 ((memq gnus-tmp-number sparse)
564 (gnus-tmp-open-bracket
565 (cond ((memq gnus-tmp-number sparse)
566 (caadr gnus-tree-brackets))
567 (dummy (caaddr gnus-tree-brackets))
568 (adopted (car (nth 3 gnus-tree-brackets)))
569 (t (caar gnus-tree-brackets))))
570 (gnus-tmp-close-bracket
571 (cond ((memq gnus-tmp-number sparse)
572 (cdadr gnus-tree-brackets))
573 (adopted (cdr (nth 3 gnus-tree-brackets)))
575 (cdaddr gnus-tree-brackets))
576 (t (cdar gnus-tree-brackets))))
577 (buffer-read-only nil)
579 (gnus-add-text-properties
581 (setq end (progn (eval gnus-tree-line-format-spec) (point)))
582 (list 'gnus-number gnus-tmp-number))
583 (when (or t (gnus-visual-p 'tree-highlight 'highlight))
584 (gnus-tree-highlight-node gnus-tmp-number beg end))))
586 (defun gnus-tree-highlight-node (article beg end)
587 "Highlight current line according to `gnus-summary-highlight'."
588 (let ((list gnus-summary-highlight)
591 (set-buffer gnus-summary-buffer)
592 (let* ((score (or (cdr (assq article gnus-newsgroup-scored))
593 gnus-summary-default-score 0))
594 (default gnus-summary-default-score)
595 (mark (or (gnus-summary-article-mark article) gnus-unread-mark)))
596 ;; Eval the cars of the lists until we find a match.
598 (not (eval (caar list))))
599 (setq list (cdr list)))))
600 (unless (eq (setq face (cdar list)) (get-text-property beg 'face))
601 (gnus-put-text-property
603 (if (boundp face) (symbol-value face) face)))))
605 (defun gnus-tree-indent (level)
606 (insert (make-string (1- (* (1+ gnus-tree-node-length) level)) ? )))
608 (defvar gnus-tmp-limit)
609 (defvar gnus-tmp-sparse)
610 (defvar gnus-tmp-indent)
612 (defun gnus-generate-tree (thread)
613 "Generate a thread tree for THREAD."
615 (set-buffer (gnus-get-tree-buffer))
616 (let ((buffer-read-only nil)
619 (funcall gnus-generate-tree-function thread 0)
620 (gnus-set-mode-line 'tree)
621 (goto-char (point-min))
624 (let ((selected (selected-window)))
625 (when (get-buffer-window (set-buffer gnus-tree-buffer) t)
626 (select-window (get-buffer-window (set-buffer gnus-tree-buffer) t))
627 (gnus-horizontal-recenter)
628 (select-window selected))))))
630 (defun gnus-generate-horizontal-tree (thread level &optional dummyp adopted)
631 "Generate a horizontal tree."
632 (let* ((dummy (stringp (car thread)))
634 (memq (mail-header-number (car thread)) gnus-tmp-limit)))
637 ;; We don't want this article.
638 (setq thread (cdr thread))
640 ;; Not the first article on the line, so we insert a "-".
641 (insert (car gnus-tree-parent-child-edges))
642 ;; If the level isn't zero, then we insert some indentation.
643 (unless (zerop level)
644 (gnus-tree-indent level)
645 (insert (cadr gnus-tree-parent-child-edges))
646 (setq col (- (setq beg (point)) (gnus-point-at-bol) 1))
647 ;; Draw "|" lines upwards.
651 (= (following-char) ? ))
653 (insert (caddr gnus-tree-parent-child-edges)))
656 ;; Insert the article node.
657 (gnus-tree-node-insert (pop thread) gnus-tmp-sparse adopted))
659 ;; End of the thread, so we go to the next line.
662 ;; Recurse downwards in all children of this article.
664 (gnus-generate-horizontal-tree
665 (pop thread) (if do (1+ level) level)
666 (or dummyp dummy) dummy)))))
668 (defsubst gnus-tree-indent-vertical ()
669 (let ((len (- (* (1+ gnus-tree-node-length) gnus-tmp-indent)
670 (- (point) (gnus-point-at-bol)))))
672 (insert (make-string len ? )))))
674 (defsubst gnus-tree-forward-line (n)
675 (while (>= (decf n) 0)
676 (unless (zerop (forward-line 1))
681 (defun gnus-generate-vertical-tree (thread level &optional dummyp adopted)
682 "Generate a vertical tree."
683 (let* ((dummy (stringp (car thread)))
685 (memq (mail-header-number (car thread)) gnus-tmp-limit)))
688 ;; We don't want this article.
689 (setq thread (cdr thread))
690 (if (not (save-excursion (beginning-of-line) (bobp)))
691 ;; Not the first article on the line, so we insert a "-".
693 (gnus-tree-indent-vertical)
694 (insert (make-string (/ gnus-tree-node-length 2) ? ))
695 (insert (caddr gnus-tree-parent-child-edges))
696 (gnus-tree-forward-line 1))
697 ;; If the level isn't zero, then we insert some indentation.
698 (unless (zerop gnus-tmp-indent)
699 (gnus-tree-forward-line (1- (* 2 level)))
700 (gnus-tree-indent-vertical)
702 (insert (cadr gnus-tree-parent-child-edges))
704 ;; Draw "-" lines leftwards.
707 (= (following-char) ? ))
709 (insert (car gnus-tree-parent-child-edges)))
711 (gnus-tree-forward-line 1)))
713 ;; Insert the article node.
714 (gnus-tree-indent-vertical)
715 (gnus-tree-node-insert (pop thread) gnus-tmp-sparse adopted)
716 (gnus-tree-forward-line 1))
718 ;; End of the thread, so we go to the next line.
720 (goto-char (point-min))
722 (incf gnus-tmp-indent))
723 ;; Recurse downwards in all children of this article.
725 (gnus-generate-vertical-tree
726 (pop thread) (if do (1+ level) level)
727 (or dummyp dummy) dummy)))))
729 ;;; Interface functions.
731 (defun gnus-possibly-generate-tree (article &optional force)
732 "Generate the thread tree for ARTICLE if it isn't displayed already."
733 (when (save-excursion
734 (set-buffer gnus-summary-buffer)
737 (vectorp (gnus-summary-article-header article))))
739 (let ((top (save-excursion
740 (set-buffer gnus-summary-buffer)
744 (gnus-summary-article-header article))
746 (gnus-tmp-limit gnus-newsgroup-limit)
747 (gnus-tmp-sparse gnus-newsgroup-sparse))
749 (not (eq top gnus-tree-displayed-thread)))
750 (gnus-generate-tree top)
751 (setq gnus-tree-displayed-thread top))))))
753 (defun gnus-tree-open (group)
754 (gnus-get-tree-buffer))
756 (defun gnus-tree-close (group)
757 ;(gnus-kill-buffer gnus-tree-buffer)
760 (defun gnus-highlight-selected-tree (article)
761 "Highlight the selected article in the tree."
762 (let ((buf (current-buffer))
764 (set-buffer gnus-tree-buffer)
765 (when (setq region (gnus-tree-article-region article))
766 (when (or (not gnus-selected-tree-overlay)
767 (gnus-extent-detached-p gnus-selected-tree-overlay))
768 ;; Create a new overlay.
770 (setq gnus-selected-tree-overlay (gnus-make-overlay 1 2))
771 'face gnus-selected-tree-face))
772 ;; Move the overlay to the article.
774 gnus-selected-tree-overlay (goto-char (car region)) (cdr region))
777 (let ((selected (selected-window)))
778 (when (get-buffer-window (set-buffer gnus-tree-buffer) t)
779 (select-window (get-buffer-window (set-buffer gnus-tree-buffer) t))
780 (gnus-horizontal-recenter)
781 (select-window selected))))
782 ;; If we remove this save-excursion, it updates the wrong mode lines?!?
784 (set-buffer gnus-tree-buffer)
785 (gnus-set-mode-line 'tree))
788 (defun gnus-tree-highlight-article (article face)
790 (set-buffer (gnus-get-tree-buffer))
792 (when (setq region (gnus-tree-article-region article))
793 (gnus-put-text-property (car region) (cdr region) 'face face)
795 (get-buffer-window (current-buffer) t) (cdr region))))))
801 (defvar gnus-carpal-group-buffer-buttons
802 '(("next" . gnus-group-next-unread-group)
803 ("prev" . gnus-group-prev-unread-group)
804 ("read" . gnus-group-read-group)
805 ("select" . gnus-group-select-group)
806 ("catch-up" . gnus-group-catchup-current)
807 ("new-news" . gnus-group-get-new-news-this-group)
808 ("toggle-sub" . gnus-group-unsubscribe-current-group)
809 ("subscribe" . gnus-group-unsubscribe-group)
810 ("kill" . gnus-group-kill-group)
811 ("yank" . gnus-group-yank-group)
812 ("describe" . gnus-group-describe-group)
814 ("subscribed" . gnus-group-list-groups)
815 ("all" . gnus-group-list-all-groups)
816 ("killed" . gnus-group-list-killed)
817 ("zombies" . gnus-group-list-zombies)
818 ("matching" . gnus-group-list-matching)
819 ("post" . gnus-group-post-news)
820 ("mail" . gnus-group-mail)
821 ("rescan" . gnus-group-get-new-news)
822 ("browse-foreign" . gnus-group-browse-foreign)
823 ("exit" . gnus-group-exit)))
825 (defvar gnus-carpal-summary-buffer-buttons
827 ("read" . gnus-summary-mark-as-read-forward)
828 ("tick" . gnus-summary-tick-article-forward)
829 ("clear" . gnus-summary-clear-mark-forward)
830 ("expirable" . gnus-summary-mark-as-expirable)
832 ("scroll" . gnus-summary-next-page)
833 ("next-unread" . gnus-summary-next-unread-article)
834 ("prev-unread" . gnus-summary-prev-unread-article)
835 ("first" . gnus-summary-first-unread-article)
836 ("best" . gnus-summary-best-unread-article)
838 ("headers" . gnus-summary-toggle-header)
839 ("uudecode" . gnus-uu-decode-uu)
840 ("enter-digest" . gnus-summary-enter-digest-group)
841 ("fetch-parent" . gnus-summary-refer-parent-article)
843 ("move" . gnus-summary-move-article)
844 ("copy" . gnus-summary-copy-article)
845 ("respool" . gnus-summary-respool-article)
847 ("lower" . gnus-summary-lower-thread)
848 ("kill" . gnus-summary-kill-thread)
850 ("post" . gnus-summary-post-news)
851 ("mail" . gnus-summary-mail)
852 ("followup" . gnus-summary-followup-with-original)
853 ("reply" . gnus-summary-reply-with-original)
854 ("cancel" . gnus-summary-cancel-article)
856 ("exit" . gnus-summary-exit)
857 ("fed-up" . gnus-summary-catchup-and-goto-next-group)))
859 (defvar gnus-carpal-server-buffer-buttons
860 '(("add" . gnus-server-add-server)
861 ("browse" . gnus-server-browse-server)
862 ("list" . gnus-server-list-servers)
863 ("kill" . gnus-server-kill-server)
864 ("yank" . gnus-server-yank-server)
865 ("copy" . gnus-server-copy-server)
866 ("exit" . gnus-server-exit)))
868 (defvar gnus-carpal-browse-buffer-buttons
869 '(("subscribe" . gnus-browse-unsubscribe-current-group)
870 ("exit" . gnus-browse-exit)))
872 (defvar gnus-carpal-group-buffer "*Carpal Group*")
873 (defvar gnus-carpal-summary-buffer "*Carpal Summary*")
874 (defvar gnus-carpal-server-buffer "*Carpal Server*")
875 (defvar gnus-carpal-browse-buffer "*Carpal Browse*")
877 (defvar gnus-carpal-attached-buffer nil)
879 (defvar gnus-carpal-mode-hook nil
880 "*Hook run in carpal mode buffers.")
882 (defvar gnus-carpal-button-face 'bold
883 "*Face used on carpal buttons.")
885 (defvar gnus-carpal-header-face 'bold-italic
886 "*Face used on carpal buffer headers.")
888 (defvar gnus-carpal-mode-map nil)
889 (put 'gnus-carpal-mode 'mode-class 'special)
891 (if gnus-carpal-mode-map
893 (setq gnus-carpal-mode-map (make-keymap))
894 (suppress-keymap gnus-carpal-mode-map)
895 (define-key gnus-carpal-mode-map " " 'gnus-carpal-select)
896 (define-key gnus-carpal-mode-map "\r" 'gnus-carpal-select)
897 (define-key gnus-carpal-mode-map gnus-mouse-2 'gnus-carpal-mouse-select))
899 (defun gnus-carpal-mode ()
900 "Major mode for clicking buttons.
902 All normal editing commands are switched off.
903 \\<gnus-carpal-mode-map>
904 The following commands are available:
906 \\{gnus-carpal-mode-map}"
908 (kill-all-local-variables)
909 (setq mode-line-modified "-- ")
910 (setq major-mode 'gnus-carpal-mode)
911 (setq mode-name "Gnus Carpal")
912 (setq mode-line-process nil)
913 (use-local-map gnus-carpal-mode-map)
914 (buffer-disable-undo (current-buffer))
915 (setq buffer-read-only t)
916 (make-local-variable 'gnus-carpal-attached-buffer)
917 (run-hooks 'gnus-carpal-mode-hook))
919 (defun gnus-carpal-setup-buffer (type)
920 (let ((buffer (symbol-value (intern (format "gnus-carpal-%s-buffer" type)))))
921 (if (get-buffer buffer)
924 (set-buffer (get-buffer-create buffer))
926 (setq gnus-carpal-attached-buffer
927 (intern (format "gnus-%s-buffer" type)))
928 (gnus-add-current-to-buffer-list)
929 (let ((buttons (symbol-value
930 (intern (format "gnus-carpal-%s-buffer-buttons"
932 (buffer-read-only nil)
935 (setq button (car buttons)
936 buttons (cdr buttons))
938 (gnus-set-text-properties
940 (prog2 (insert button) (point) (insert " "))
941 (list 'face gnus-carpal-header-face))
942 (gnus-set-text-properties
944 (prog2 (insert (car button)) (point) (insert " "))
945 (list 'gnus-callback (cdr button)
946 'face gnus-carpal-button-face
947 gnus-mouse-face-prop 'highlight))))
948 (let ((fill-column (- (window-width) 2)))
949 (fill-region (point-min) (point-max)))
950 (set-window-point (get-buffer-window (current-buffer))
953 (defun gnus-carpal-select ()
954 "Select the button under point."
956 (let ((func (get-text-property (point) 'gnus-callback)))
959 (pop-to-buffer (symbol-value gnus-carpal-attached-buffer))
960 (call-interactively func))))
962 (defun gnus-carpal-mouse-select (event)
963 "Select the button under the mouse pointer."
965 (mouse-set-point event)
966 (gnus-carpal-select))
968 ;;; Allow redefinition of functions.
973 ;;; gnus-salt.el ends here