1 ;;; gnus-salt.el --- alternate summary mode interfaces for Gnus
2 ;; Copyright (C) 1996,97 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
6 ;; This file is part of GNU Emacs.
8 ;; GNU Emacs is free software; you can redistribute it and/or modify
9 ;; it under the terms of the GNU General Public License as published by
10 ;; the Free Software Foundation; either version 2, or (at your option)
13 ;; GNU Emacs is distributed in the hope that it will be useful,
14 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
15 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 ;; GNU General Public License for more details.
18 ;; You should have received a copy of the GNU General Public License
19 ;; along with GNU Emacs; see the file COPYING. If not, write to the
20 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 ;; Boston, MA 02111-1307, USA.
27 (eval-when-compile (require 'cl
))
36 (defvar gnus-pick-mode nil
37 "Minor mode for providing a pick-and-read interface in Gnus summary buffers.")
39 (defvar gnus-pick-display-summary nil
40 "*Display summary while reading.")
42 (defvar gnus-pick-mode-hook nil
43 "Hook run in summary pick mode buffers.")
45 (defvar gnus-mark-unpicked-articles-as-read nil
46 "*If non-nil, mark all unpicked articles as read.")
48 (defvar gnus-pick-elegant-flow t
49 "If non-nil, gnus-pick-start-reading will run gnus-summary-next-group when no articles have been picked.")
51 (defvar gnus-summary-pick-line-format
52 "%-5P %U\%R\%z\%I\%(%[%4L: %-20,20n%]%) %s\n"
53 "*The format specification of the lines in pick buffers.
54 It accepts the same format specs that `gnus-summary-line-format' does.")
56 ;;; Internal variables.
58 (defvar gnus-pick-mode-map nil
)
60 (unless gnus-pick-mode-map
61 (setq gnus-pick-mode-map
(make-sparse-keymap))
65 "t" gnus-uu-mark-thread
66 "T" gnus-uu-unmark-thread
67 " " gnus-pick-next-page
68 "u" gnus-summary-unmark-as-processable
69 "U" gnus-summary-unmark-all-processable
71 "r" gnus-uu-mark-region
72 "R" gnus-uu-unmark-region
73 "e" gnus-uu-mark-by-regexp
74 "E" gnus-uu-mark-by-regexp
75 "b" gnus-uu-mark-buffer
76 "B" gnus-uu-unmark-buffer
78 gnus-down-mouse-2 gnus-pick-mouse-pick-region
79 ;;gnus-mouse-2 gnus-pick-mouse-pick
80 "X" gnus-pick-start-reading
81 "\r" gnus-pick-start-reading
))
83 (defun gnus-pick-make-menu-bar ()
84 (unless (boundp 'gnus-pick-menu
)
86 gnus-pick-menu gnus-pick-mode-map
""
89 ["Article" gnus-summary-mark-as-processable t
]
90 ["Thread" gnus-uu-mark-thread t
]
91 ["Region" gnus-uu-mark-region t
]
92 ["Regexp" gnus-uu-mark-regexp t
]
93 ["Buffer" gnus-uu-mark-buffer t
])
95 ["Article" gnus-summary-unmark-as-processable t
]
96 ["Thread" gnus-uu-unmark-thread t
]
97 ["Region" gnus-uu-unmark-region t
]
98 ["Regexp" gnus-uu-unmark-regexp t
]
99 ["Buffer" gnus-uu-unmark-buffer t
])
100 ["Start reading" gnus-pick-start-reading t
]
101 ["Switch pick mode off" gnus-pick-mode gnus-pick-mode
]))))
103 (defun gnus-pick-mode (&optional arg
)
104 "Minor mode for providing a pick-and-read interface in Gnus summary buffers.
106 \\{gnus-pick-mode-map}"
108 (when (eq major-mode
'gnus-summary-mode
)
109 (if (not (set (make-local-variable 'gnus-pick-mode
)
110 (if (null arg
) (not gnus-pick-mode
)
111 (> (prefix-numeric-value arg
) 0))))
112 (remove-hook 'gnus-message-setup-hook
'gnus-pick-setup-message
)
113 ;; Make sure that we don't select any articles upon group entry.
114 (set (make-local-variable 'gnus-auto-select-first
) nil
)
115 ;; Change line format.
116 (setq gnus-summary-line-format gnus-summary-pick-line-format
)
117 (setq gnus-summary-line-format-spec nil
)
118 (gnus-update-format-specifications nil
'summary
)
119 (gnus-update-summary-mark-positions)
120 (add-hook 'gnus-message-setup-hook
'gnus-pick-setup-message
)
121 (set (make-local-variable 'gnus-summary-goto-unread
) 'never
)
123 (when (gnus-visual-p 'pick-menu
'menu
)
124 (gnus-pick-make-menu-bar))
125 (unless (assq 'gnus-pick-mode minor-mode-alist
)
126 (push '(gnus-pick-mode " Pick") minor-mode-alist
))
127 (unless (assq 'gnus-pick-mode minor-mode-map-alist
)
128 (push (cons 'gnus-pick-mode gnus-pick-mode-map
)
129 minor-mode-map-alist
))
130 (run-hooks 'gnus-pick-mode-hook
))))
132 (defun gnus-pick-setup-message ()
133 "Make Message do the right thing on exit."
134 (when (and (gnus-buffer-live-p gnus-summary-buffer
)
136 (set-buffer gnus-summary-buffer
)
139 '(gnus-configure-windows 'pick t
) 'send
'exit
'postpone
'kill
)))
141 (defvar gnus-pick-line-number
1)
142 (defun gnus-pick-line-number ()
143 "Return the current line number."
145 (setq gnus-pick-line-number
1)
146 (incf gnus-pick-line-number
)))
148 (defun gnus-pick-start-reading (&optional catch-up
)
149 "Start reading the picked articles.
150 If given a prefix, mark all unpicked articles as read."
152 (if gnus-newsgroup-processable
154 (gnus-summary-limit-to-articles nil
)
155 (when (or catch-up gnus-mark-unpicked-articles-as-read
)
156 (gnus-summary-limit-mark-excluded-as-read))
157 (gnus-summary-first-article)
158 (gnus-configure-windows
159 (if gnus-pick-display-summary
'article
'pick
) t
))
160 (if gnus-pick-elegant-flow
162 (when (or catch-up gnus-mark-unpicked-articles-as-read
)
163 (gnus-summary-limit-mark-excluded-as-read))
164 (if (gnus-group-quit-config gnus-newsgroup-name
)
166 (gnus-summary-next-group)))
167 (error "No articles have been picked"))))
169 (defun gnus-pick-article (&optional arg
)
170 "Pick the article on the current line.
171 If ARG, pick the article on that line instead."
176 (goto-char (point-min))
177 (when (zerop (forward-line (1- (prefix-numeric-value arg
))))
180 (gnus-error 2 "No such line: %s" arg
)
182 (gnus-summary-mark-as-processable 1))
184 (defun gnus-pick-mouse-pick (e)
188 (gnus-summary-mark-as-processable 1)))
190 (defun gnus-pick-mouse-pick-region (start-event)
191 "Pick articles that the mouse is dragged over.
192 This must be bound to a button-down mouse event."
194 (mouse-minibuffer-check start-event
)
195 (let* ((echo-keystrokes 0)
196 (start-posn (event-start start-event
))
197 (start-point (posn-point start-posn
))
198 (start-line (1+ (count-lines 1 start-point
)))
199 (start-window (posn-window start-posn
))
200 (start-frame (window-frame start-window
))
201 (bounds (window-edges start-window
))
203 (bottom (if (window-minibuffer-p start-window
)
205 ;; Don't count the mode line.
206 (1- (nth 3 bounds
))))
207 (click-count (1- (event-click-count start-event
))))
208 (setq mouse-selection-click-count click-count
)
209 (setq mouse-selection-click-count-buffer
(current-buffer))
210 (mouse-set-point start-event
)
211 ;; In case the down click is in the middle of some intangible text,
212 ;; use the end of that text, and put it in START-POINT.
213 (when (< (point) start-point
)
214 (goto-char start-point
))
216 (setq start-point
(point))
217 ;; end-of-range is used only in the single-click case.
218 ;; It is the place where the drag has reached so far
219 ;; (but not outside the window where the drag started).
220 (let (event end end-point last-end-point
(end-of-range (point)))
223 (setq event
(read-event))
224 (or (mouse-movement-p event
)
225 (eq (car-safe event
) 'switch-frame
)))
226 (if (eq (car-safe event
) 'switch-frame
)
228 (setq end
(event-end event
)
229 end-point
(posn-point end
))
231 (setq last-end-point end-point
))
234 ;; Are we moving within the original window?
235 ((and (eq (posn-window end
) start-window
)
236 (integer-or-marker-p end-point
))
237 ;; Go to START-POINT first, so that when we move to END-POINT,
238 ;; if it's in the middle of intangible text,
239 ;; point jumps in the direction away from START-POINT.
240 (goto-char start-point
)
241 (goto-char end-point
)
243 ;; In case the user moved his mouse really fast, pick
244 ;; articles on the line between this one and the last one.
245 (let* ((this-line (1+ (count-lines 1 end-point
)))
246 (min-line (min this-line start-line
))
247 (max-line (max this-line start-line
)))
248 (while (< min-line max-line
)
251 (setq min-line
(1+ min-line
)))
252 (setq start-line this-line
))
253 (when (zerop (% click-count
3))
254 (setq end-of-range
(point))))
256 (let ((mouse-row (cdr (cdr (mouse-position)))))
260 (mouse-scroll-subr start-window
(- mouse-row top
)))
261 ((>= mouse-row bottom
)
262 (mouse-scroll-subr start-window
263 (1+ (- mouse-row bottom
)))))))))))
265 (let ((fun (key-binding (vector (car event
)))))
266 ;; Run the binding of the terminating up-event, if possible.
267 ;; In the case of a multiple click, it gives the wrong results,
268 ;; because it would fail to set up a region.
270 ;; (and (= (mod mouse-selection-click-count 3) 0) (fboundp fun))
271 ;; In this case, we can just let the up-event execute normally.
272 (let ((end (event-end event
)))
273 ;; Set the position in the event before we replay it,
274 ;; because otherwise it may have a position in the wrong
276 (setcar (cdr end
) end-of-range
)
277 ;; Delete the overlay before calling the function,
278 ;; because delete-overlay increases buffer-modified-tick.
279 (push event unread-command-events
))))))))
281 (defun gnus-pick-next-page ()
282 "Go to the next page. If at the end of the buffer, start reading articles."
284 (let ((scroll-in-place nil
))
287 (end-of-buffer (gnus-pick-start-reading)))))
293 (defvar gnus-binary-mode nil
294 "Minor mode for providing a binary group interface in Gnus summary buffers.")
296 (defvar gnus-binary-mode-hook nil
297 "Hook run in summary binary mode buffers.")
299 (defvar gnus-binary-mode-map nil
)
301 (unless gnus-binary-mode-map
302 (setq gnus-binary-mode-map
(make-sparse-keymap))
306 "g" gnus-binary-show-article
))
308 (defun gnus-binary-make-menu-bar ()
309 (unless (boundp 'gnus-binary-menu
)
311 gnus-binary-menu gnus-binary-mode-map
""
313 ["Switch binary mode off" gnus-binary-mode t
]))))
315 (defun gnus-binary-mode (&optional arg
)
316 "Minor mode for providing a binary group interface in Gnus summary buffers."
318 (when (eq major-mode
'gnus-summary-mode
)
319 (make-local-variable 'gnus-binary-mode
)
320 (setq gnus-binary-mode
321 (if (null arg
) (not gnus-binary-mode
)
322 (> (prefix-numeric-value arg
) 0)))
323 (when gnus-binary-mode
324 ;; Make sure that we don't select any articles upon group entry.
325 (make-local-variable 'gnus-auto-select-first
)
326 (setq gnus-auto-select-first nil
)
327 (make-local-variable 'gnus-summary-display-article-function
)
328 (setq gnus-summary-display-article-function
'gnus-binary-display-article
)
330 (when (gnus-visual-p 'binary-menu
'menu
)
331 (gnus-binary-make-menu-bar))
332 (unless (assq 'gnus-binary-mode minor-mode-alist
)
333 (push '(gnus-binary-mode " Binary") minor-mode-alist
))
334 (unless (assq 'gnus-binary-mode minor-mode-map-alist
)
335 (push (cons 'gnus-binary-mode gnus-binary-mode-map
)
336 minor-mode-map-alist
))
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 (defvar gnus-tree-line-format
"%(%[%3,3n%]%)"
356 "Format of tree elements.")
358 (defvar gnus-tree-minimize-window t
359 "If non-nil, minimize the tree buffer window.
360 If a number, never let the tree buffer grow taller than that number of
363 (defvar gnus-selected-tree-face
'modeline
364 "*Face used for highlighting selected articles in the thread tree.")
366 (defvar gnus-tree-brackets
'((?\
[ . ?\
]) (?\
( . ?\
))
367 (?\
{ . ?\
}) (?
< . ?
>))
368 "Brackets used in tree nodes.")
370 (defvar gnus-tree-parent-child-edges
'(?- ?
\\ ?|
)
371 "Characters used to connect parents with children.")
373 (defvar gnus-tree-mode-line-format
"Gnus: %%b %S %Z"
374 "*The format specification for the tree mode line.")
376 (defvar gnus-generate-tree-function
'gnus-generate-vertical-tree
377 "*Function for generating a thread tree.
378 Two predefined functions are available:
379 `gnus-generate-horizontal-tree' and `gnus-generate-vertical-tree'.")
381 (defvar gnus-tree-mode-hook nil
382 "*Hook run in tree mode buffers.")
384 ;;; Internal variables.
386 (defvar gnus-tree-line-format-alist
387 `((?n gnus-tmp-name ?s
)
388 (?f gnus-tmp-from ?s
)
389 (?N gnus-tmp-number ?d
)
390 (?\
[ gnus-tmp-open-bracket ?c
)
391 (?\
] gnus-tmp-close-bracket ?c
)
392 (?s gnus-tmp-subject ?s
)))
394 (defvar gnus-tree-mode-line-format-alist gnus-summary-mode-line-format-alist
)
396 (defvar gnus-tree-mode-line-format-spec nil
)
397 (defvar gnus-tree-line-format-spec nil
)
399 (defvar gnus-tree-node-length nil
)
400 (defvar gnus-selected-tree-overlay nil
)
402 (defvar gnus-tree-displayed-thread nil
)
404 (defvar gnus-tree-mode-map nil
)
405 (put 'gnus-tree-mode
'mode-class
'special
)
407 (unless gnus-tree-mode-map
408 (setq gnus-tree-mode-map
(make-keymap))
409 (suppress-keymap gnus-tree-mode-map
)
412 "\r" gnus-tree-select-article
413 gnus-mouse-2 gnus-tree-pick-article
414 "\C-?" gnus-tree-read-summary-keys
416 "\C-c\C-i" gnus-info-find-node
)
418 (substitute-key-definition
419 'undefined
'gnus-tree-read-summary-keys gnus-tree-mode-map
))
421 (defun gnus-tree-make-menu-bar ()
422 (unless (boundp 'gnus-tree-menu
)
424 gnus-tree-menu gnus-tree-mode-map
""
426 ["Select article" gnus-tree-select-article t
]))))
428 (defun gnus-tree-mode ()
429 "Major mode for displaying thread trees."
431 (setq gnus-tree-mode-line-format-spec
432 (gnus-parse-format gnus-tree-mode-line-format
433 gnus-summary-mode-line-format-alist
))
434 (setq gnus-tree-line-format-spec
435 (gnus-parse-format gnus-tree-line-format
436 gnus-tree-line-format-alist t
))
437 (when (gnus-visual-p 'tree-menu
'menu
)
438 (gnus-tree-make-menu-bar))
439 (kill-all-local-variables)
440 (gnus-simplify-mode-line)
441 (setq mode-name
"Tree")
442 (setq major-mode
'gnus-tree-mode
)
443 (use-local-map gnus-tree-mode-map
)
444 (buffer-disable-undo (current-buffer))
445 (setq buffer-read-only t
)
446 (setq truncate-lines t
)
448 (gnus-set-work-buffer)
449 (gnus-tree-node-insert (make-mail-header "") nil
)
450 (setq gnus-tree-node-length
(1- (point))))
451 (run-hooks 'gnus-tree-mode-hook
))
453 (defun gnus-tree-read-summary-keys (&optional arg
)
454 "Read a summary buffer key sequence and execute it."
456 (let ((buf (current-buffer))
458 (gnus-article-read-summary-keys arg nil t
)
459 (when (setq win
(get-buffer-window buf
))
461 (when gnus-selected-tree-overlay
462 (goto-char (or (gnus-overlay-end gnus-selected-tree-overlay
) 1)))
463 (gnus-tree-minimize))))
465 (defun gnus-tree-select-article (article)
466 "Select the article under point, if any."
467 (interactive (list (gnus-tree-article-number)))
468 (let ((buf (current-buffer)))
471 (set-buffer gnus-summary-buffer
)
472 (gnus-summary-goto-article article
))
473 (select-window (get-buffer-window buf
)))))
475 (defun gnus-tree-pick-article (e)
476 "Select the article under the mouse pointer."
479 (gnus-tree-select-article (gnus-tree-article-number)))
481 (defun gnus-tree-article-number ()
482 (get-text-property (point) 'gnus-number
))
484 (defun gnus-tree-article-region (article)
485 "Return a cons with BEG and END of the article region."
486 (let ((pos (text-property-any (point-min) (point-max) 'gnus-number article
)))
488 (cons pos
(next-single-property-change pos
'gnus-number
)))))
490 (defun gnus-tree-goto-article (article)
491 (let ((pos (text-property-any (point-min) (point-max) 'gnus-number article
)))
495 (defun gnus-tree-recenter ()
496 "Center point in the tree window."
497 (let ((selected (selected-window))
498 (tree-window (get-buffer-window gnus-tree-buffer t
)))
500 (select-window tree-window
)
501 (when gnus-selected-tree-overlay
502 (goto-char (or (gnus-overlay-end gnus-selected-tree-overlay
) 1)))
503 (let* ((top (cond ((< (window-height) 4) 0)
504 ((< (window-height) 7) 1)
506 (height (1- (window-height)))
507 (bottom (save-excursion (goto-char (point-max))
508 (forward-line (- height
))
510 ;; Set the window start to either `bottom', which is the biggest
511 ;; possible valid number, or the second line from the top,
512 ;; whichever is the least.
514 tree-window
(min bottom
(save-excursion
515 (forward-line (- top
)) (point)))))
516 (select-window selected
))))
518 (defun gnus-get-tree-buffer ()
519 "Return the tree buffer properly initialized."
521 (set-buffer (get-buffer-create gnus-tree-buffer
))
522 (unless (eq major-mode
'gnus-tree-mode
)
523 (gnus-add-current-to-buffer-list)
527 (defun gnus-tree-minimize ()
528 (when (and gnus-tree-minimize-window
529 (not (one-window-p)))
532 (walk-windows (lambda (window) (incf windows
)))
535 (* window-min-height
(1- windows
))
537 (let* ((window-min-height 2)
538 (height (count-lines (point-min) (point-max)))
539 (min (max (1- window-min-height
) height
))
540 (tot (if (numberp gnus-tree-minimize-window
)
541 (min gnus-tree-minimize-window min
)
543 (win (get-buffer-window (current-buffer)))
544 (wh (and win
(1- (window-height win
)))))
545 (setq tot
(min tot tot-win-height
))
548 (let ((selected (selected-window)))
549 (when (ignore-errors (select-window win
))
550 (enlarge-window (- tot wh
))
551 (select-window selected
))))))))
553 ;;; Generating the tree.
555 (defun gnus-tree-node-insert (header sparse
&optional adopted
)
556 (let* ((dummy (stringp header
))
557 (header (if (vectorp header
) header
559 (setq header
(make-mail-header "*****"))
560 (mail-header-set-number header
0)
561 (mail-header-set-lines header
0)
562 (mail-header-set-chars header
0)
564 (gnus-tmp-from (mail-header-from header
))
565 (gnus-tmp-subject (mail-header-subject header
))
566 (gnus-tmp-number (mail-header-number header
))
569 ((string-match "(.+)" gnus-tmp-from
)
570 (substring gnus-tmp-from
571 (1+ (match-beginning 0)) (1- (match-end 0))))
572 ((string-match "<[^>]+> *$" gnus-tmp-from
)
573 (let ((beg (match-beginning 0)))
574 (or (and (string-match "^\"[^\"]*\"" gnus-tmp-from
)
575 (substring gnus-tmp-from
(1+ (match-beginning 0))
577 (substring gnus-tmp-from
0 beg
))))
578 ((memq gnus-tmp-number sparse
)
581 (gnus-tmp-open-bracket
582 (cond ((memq gnus-tmp-number sparse
)
583 (caadr gnus-tree-brackets
))
584 (dummy (caaddr gnus-tree-brackets
))
585 (adopted (car (nth 3 gnus-tree-brackets
)))
586 (t (caar gnus-tree-brackets
))))
587 (gnus-tmp-close-bracket
588 (cond ((memq gnus-tmp-number sparse
)
589 (cdadr gnus-tree-brackets
))
590 (adopted (cdr (nth 3 gnus-tree-brackets
)))
592 (cdaddr gnus-tree-brackets
))
593 (t (cdar gnus-tree-brackets
))))
594 (buffer-read-only nil
)
596 (gnus-add-text-properties
598 (setq end
(progn (eval gnus-tree-line-format-spec
) (point)))
599 (list 'gnus-number gnus-tmp-number
))
600 (when (or t
(gnus-visual-p 'tree-highlight
'highlight
))
601 (gnus-tree-highlight-node gnus-tmp-number beg end
))))
603 (defun gnus-tree-highlight-node (article beg end
)
604 "Highlight current line according to `gnus-summary-highlight'."
605 (let ((list gnus-summary-highlight
)
608 (set-buffer gnus-summary-buffer
)
609 (let* ((score (or (cdr (assq article gnus-newsgroup-scored
))
610 gnus-summary-default-score
0))
611 (default gnus-summary-default-score
)
612 (mark (or (gnus-summary-article-mark article
) gnus-unread-mark
)))
613 ;; Eval the cars of the lists until we find a match.
615 (not (eval (caar list
))))
616 (setq list
(cdr list
)))))
617 (unless (eq (setq face
(cdar list
)) (get-text-property beg
'face
))
618 (gnus-put-text-property
620 (if (boundp face
) (symbol-value face
) face
)))))
622 (defun gnus-tree-indent (level)
623 (insert (make-string (1- (* (1+ gnus-tree-node-length
) level
)) ?
)))
625 (defvar gnus-tmp-limit
)
626 (defvar gnus-tmp-sparse
)
627 (defvar gnus-tmp-indent
)
629 (defun gnus-generate-tree (thread)
630 "Generate a thread tree for THREAD."
632 (set-buffer (gnus-get-tree-buffer))
633 (let ((buffer-read-only nil
)
636 (funcall gnus-generate-tree-function thread
0)
637 (gnus-set-mode-line 'tree
)
638 (goto-char (point-min))
641 (let ((selected (selected-window)))
642 (when (get-buffer-window (set-buffer gnus-tree-buffer
) t
)
643 (select-window (get-buffer-window (set-buffer gnus-tree-buffer
) t
))
644 (gnus-horizontal-recenter)
645 (select-window selected
))))))
647 (defun gnus-generate-horizontal-tree (thread level
&optional dummyp adopted
)
648 "Generate a horizontal tree."
649 (let* ((dummy (stringp (car thread
)))
651 (memq (mail-header-number (car thread
)) gnus-tmp-limit
)))
654 ;; We don't want this article.
655 (setq thread
(cdr thread
))
657 ;; Not the first article on the line, so we insert a "-".
658 (insert (car gnus-tree-parent-child-edges
))
659 ;; If the level isn't zero, then we insert some indentation.
660 (unless (zerop level
)
661 (gnus-tree-indent level
)
662 (insert (cadr gnus-tree-parent-child-edges
))
663 (setq col
(- (setq beg
(point)) (gnus-point-at-bol) 1))
664 ;; Draw "|" lines upwards.
668 (= (following-char) ?
))
670 (insert (caddr gnus-tree-parent-child-edges
)))
673 ;; Insert the article node.
674 (gnus-tree-node-insert (pop thread
) gnus-tmp-sparse adopted
))
676 ;; End of the thread, so we go to the next line.
679 ;; Recurse downwards in all children of this article.
681 (gnus-generate-horizontal-tree
682 (pop thread
) (if do
(1+ level
) level
)
683 (or dummyp dummy
) dummy
)))))
685 (defsubst gnus-tree-indent-vertical
()
686 (let ((len (- (* (1+ gnus-tree-node-length
) gnus-tmp-indent
)
687 (- (point) (gnus-point-at-bol)))))
689 (insert (make-string len ?
)))))
691 (defsubst gnus-tree-forward-line
(n)
692 (while (>= (decf n
) 0)
693 (unless (zerop (forward-line 1))
698 (defun gnus-generate-vertical-tree (thread level
&optional dummyp adopted
)
699 "Generate a vertical tree."
700 (let* ((dummy (stringp (car thread
)))
703 (memq (mail-header-number (car thread
))
707 ;; We don't want this article.
708 (setq thread
(cdr thread
))
709 (if (not (save-excursion (beginning-of-line) (bobp)))
710 ;; Not the first article on the line, so we insert a "-".
712 (gnus-tree-indent-vertical)
713 (insert (make-string (/ gnus-tree-node-length
2) ?
))
714 (insert (caddr gnus-tree-parent-child-edges
))
715 (gnus-tree-forward-line 1))
716 ;; If the level isn't zero, then we insert some indentation.
717 (unless (zerop gnus-tmp-indent
)
718 (gnus-tree-forward-line (1- (* 2 level
)))
719 (gnus-tree-indent-vertical)
721 (insert (cadr gnus-tree-parent-child-edges
))
723 ;; Draw "-" lines leftwards.
727 (= (following-char) ?
))
729 (insert (car gnus-tree-parent-child-edges
)))
731 (gnus-tree-forward-line 1)))
733 ;; Insert the article node.
734 (gnus-tree-indent-vertical)
735 (gnus-tree-node-insert (pop thread
) gnus-tmp-sparse adopted
)
736 (gnus-tree-forward-line 1))
738 ;; End of the thread, so we go to the next line.
740 (goto-char (point-min))
742 (incf gnus-tmp-indent
))
743 ;; Recurse downwards in all children of this article.
745 (gnus-generate-vertical-tree
746 (pop thread
) (if do
(1+ level
) level
)
747 (or dummyp dummy
) dummy
)))))
749 ;;; Interface functions.
751 (defun gnus-possibly-generate-tree (article &optional force
)
752 "Generate the thread tree for ARTICLE if it isn't displayed already."
753 (when (save-excursion
754 (set-buffer gnus-summary-buffer
)
757 (vectorp (gnus-summary-article-header article
))))
759 (let ((top (save-excursion
760 (set-buffer gnus-summary-buffer
)
764 (gnus-summary-article-header article
))
766 (gnus-tmp-limit gnus-newsgroup-limit
)
767 (gnus-tmp-sparse gnus-newsgroup-sparse
))
769 (not (eq top gnus-tree-displayed-thread
)))
770 (gnus-generate-tree top
)
771 (setq gnus-tree-displayed-thread top
))))))
773 (defun gnus-tree-open (group)
774 (gnus-get-tree-buffer))
776 (defun gnus-tree-close (group)
777 ;(gnus-kill-buffer gnus-tree-buffer)
780 (defun gnus-highlight-selected-tree (article)
781 "Highlight the selected article in the tree."
782 (let ((buf (current-buffer))
784 (set-buffer gnus-tree-buffer
)
785 (when (setq region
(gnus-tree-article-region article
))
786 (when (or (not gnus-selected-tree-overlay
)
787 (gnus-extent-detached-p gnus-selected-tree-overlay
))
788 ;; Create a new overlay.
790 (setq gnus-selected-tree-overlay
(gnus-make-overlay 1 2))
791 'face gnus-selected-tree-face
))
792 ;; Move the overlay to the article.
794 gnus-selected-tree-overlay
(goto-char (car region
)) (cdr region
))
797 (let ((selected (selected-window)))
798 (when (get-buffer-window (set-buffer gnus-tree-buffer
) t
)
799 (select-window (get-buffer-window (set-buffer gnus-tree-buffer
) t
))
800 (gnus-horizontal-recenter)
801 (select-window selected
))))
802 ;; If we remove this save-excursion, it updates the wrong mode lines?!?
804 (set-buffer gnus-tree-buffer
)
805 (gnus-set-mode-line 'tree
))
808 (defun gnus-tree-highlight-article (article face
)
810 (set-buffer (gnus-get-tree-buffer))
812 (when (setq region
(gnus-tree-article-region article
))
813 (gnus-put-text-property (car region
) (cdr region
) 'face face
)
815 (get-buffer-window (current-buffer) t
) (cdr region
))))))
821 (defvar gnus-carpal-group-buffer-buttons
822 '(("next" . gnus-group-next-unread-group
)
823 ("prev" . gnus-group-prev-unread-group
)
824 ("read" . gnus-group-read-group
)
825 ("select" . gnus-group-select-group
)
826 ("catch-up" . gnus-group-catchup-current
)
827 ("new-news" . gnus-group-get-new-news-this-group
)
828 ("toggle-sub" . gnus-group-unsubscribe-current-group
)
829 ("subscribe" . gnus-group-unsubscribe-group
)
830 ("kill" . gnus-group-kill-group
)
831 ("yank" . gnus-group-yank-group
)
832 ("describe" . gnus-group-describe-group
)
834 ("subscribed" . gnus-group-list-groups
)
835 ("all" . gnus-group-list-all-groups
)
836 ("killed" . gnus-group-list-killed
)
837 ("zombies" . gnus-group-list-zombies
)
838 ("matching" . gnus-group-list-matching
)
839 ("post" . gnus-group-post-news
)
840 ("mail" . gnus-group-mail
)
841 ("rescan" . gnus-group-get-new-news
)
842 ("browse-foreign" . gnus-group-browse-foreign
)
843 ("exit" . gnus-group-exit
)))
845 (defvar gnus-carpal-summary-buffer-buttons
847 ("read" . gnus-summary-mark-as-read-forward
)
848 ("tick" . gnus-summary-tick-article-forward
)
849 ("clear" . gnus-summary-clear-mark-forward
)
850 ("expirable" . gnus-summary-mark-as-expirable
)
852 ("scroll" . gnus-summary-next-page
)
853 ("next-unread" . gnus-summary-next-unread-article
)
854 ("prev-unread" . gnus-summary-prev-unread-article
)
855 ("first" . gnus-summary-first-unread-article
)
856 ("best" . gnus-summary-best-unread-article
)
858 ("headers" . gnus-summary-toggle-header
)
859 ("uudecode" . gnus-uu-decode-uu
)
860 ("enter-digest" . gnus-summary-enter-digest-group
)
861 ("fetch-parent" . gnus-summary-refer-parent-article
)
863 ("move" . gnus-summary-move-article
)
864 ("copy" . gnus-summary-copy-article
)
865 ("respool" . gnus-summary-respool-article
)
867 ("lower" . gnus-summary-lower-thread
)
868 ("kill" . gnus-summary-kill-thread
)
870 ("post" . gnus-summary-post-news
)
871 ("mail" . gnus-summary-mail
)
872 ("followup" . gnus-summary-followup-with-original
)
873 ("reply" . gnus-summary-reply-with-original
)
874 ("cancel" . gnus-summary-cancel-article
)
876 ("exit" . gnus-summary-exit
)
877 ("fed-up" . gnus-summary-catchup-and-goto-next-group
)))
879 (defvar gnus-carpal-server-buffer-buttons
880 '(("add" . gnus-server-add-server
)
881 ("browse" . gnus-server-browse-server
)
882 ("list" . gnus-server-list-servers
)
883 ("kill" . gnus-server-kill-server
)
884 ("yank" . gnus-server-yank-server
)
885 ("copy" . gnus-server-copy-server
)
886 ("exit" . gnus-server-exit
)))
888 (defvar gnus-carpal-browse-buffer-buttons
889 '(("subscribe" . gnus-browse-unsubscribe-current-group
)
890 ("exit" . gnus-browse-exit
)))
892 (defvar gnus-carpal-group-buffer
"*Carpal Group*")
893 (defvar gnus-carpal-summary-buffer
"*Carpal Summary*")
894 (defvar gnus-carpal-server-buffer
"*Carpal Server*")
895 (defvar gnus-carpal-browse-buffer
"*Carpal Browse*")
897 (defvar gnus-carpal-attached-buffer nil
)
899 (defvar gnus-carpal-mode-hook nil
900 "*Hook run in carpal mode buffers.")
902 (defvar gnus-carpal-button-face
'bold
903 "*Face used on carpal buttons.")
905 (defvar gnus-carpal-header-face
'bold-italic
906 "*Face used on carpal buffer headers.")
908 (defvar gnus-carpal-mode-map nil
)
909 (put 'gnus-carpal-mode
'mode-class
'special
)
911 (if gnus-carpal-mode-map
913 (setq gnus-carpal-mode-map
(make-keymap))
914 (suppress-keymap gnus-carpal-mode-map
)
915 (define-key gnus-carpal-mode-map
" " 'gnus-carpal-select
)
916 (define-key gnus-carpal-mode-map
"\r" 'gnus-carpal-select
)
917 (define-key gnus-carpal-mode-map gnus-mouse-2
'gnus-carpal-mouse-select
))
919 (defun gnus-carpal-mode ()
920 "Major mode for clicking buttons.
922 All normal editing commands are switched off.
923 \\<gnus-carpal-mode-map>
924 The following commands are available:
926 \\{gnus-carpal-mode-map}"
928 (kill-all-local-variables)
929 (setq mode-line-modified
"-- ")
930 (setq major-mode
'gnus-carpal-mode
)
931 (setq mode-name
"Gnus Carpal")
932 (setq mode-line-process nil
)
933 (use-local-map gnus-carpal-mode-map
)
934 (buffer-disable-undo (current-buffer))
935 (setq buffer-read-only t
)
936 (make-local-variable 'gnus-carpal-attached-buffer
)
937 (run-hooks 'gnus-carpal-mode-hook
))
939 (defun gnus-carpal-setup-buffer (type)
940 (let ((buffer (symbol-value (intern (format "gnus-carpal-%s-buffer" type
)))))
941 (if (get-buffer buffer
)
944 (set-buffer (get-buffer-create buffer
))
946 (setq gnus-carpal-attached-buffer
947 (intern (format "gnus-%s-buffer" type
)))
948 (gnus-add-current-to-buffer-list)
949 (let ((buttons (symbol-value
950 (intern (format "gnus-carpal-%s-buffer-buttons"
952 (buffer-read-only nil
)
955 (setq button
(car buttons
)
956 buttons
(cdr buttons
))
958 (gnus-set-text-properties
960 (prog2 (insert button
) (point) (insert " "))
961 (list 'face gnus-carpal-header-face
))
962 (gnus-set-text-properties
964 (prog2 (insert (car button
)) (point) (insert " "))
965 (list 'gnus-callback
(cdr button
)
966 'face gnus-carpal-button-face
967 gnus-mouse-face-prop
'highlight
))))
968 (let ((fill-column (- (window-width) 2)))
969 (fill-region (point-min) (point-max)))
970 (set-window-point (get-buffer-window (current-buffer))
973 (defun gnus-carpal-select ()
974 "Select the button under point."
976 (let ((func (get-text-property (point) 'gnus-callback
)))
979 (pop-to-buffer (symbol-value gnus-carpal-attached-buffer
))
980 (call-interactively func
))))
982 (defun gnus-carpal-mouse-select (event)
983 "Select the button under the mouse pointer."
985 (mouse-set-point event
)
986 (gnus-carpal-select))
988 ;;; Allow redefinition of functions.
993 ;;; gnus-salt.el ends here