Commit | Line | Data |
---|---|---|
eec82323 | 1 | ;;; gnus-topic.el --- a folding minor mode for Gnus group buffers |
e84b4b86 | 2 | |
ead25b5c | 3 | ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
114f9c96 | 4 | ;; 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
eec82323 LMI |
5 | |
6 | ;; Author: Ilja Weis <kult@uni-paderborn.de> | |
6748645f | 7 | ;; Lars Magne Ingebrigtsen <larsi@gnus.org> |
eec82323 LMI |
8 | ;; Keywords: news |
9 | ||
10 | ;; This file is part of GNU Emacs. | |
11 | ||
5e809f55 | 12 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
eec82323 | 13 | ;; it under the terms of the GNU General Public License as published by |
5e809f55 GM |
14 | ;; the Free Software Foundation, either version 3 of the License, or |
15 | ;; (at your option) any later version. | |
eec82323 LMI |
16 | |
17 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
18 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | ;; GNU General Public License for more details. | |
21 | ||
22 | ;; You should have received a copy of the GNU General Public License | |
5e809f55 | 23 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
eec82323 LMI |
24 | |
25 | ;;; Commentary: | |
26 | ||
27 | ;;; Code: | |
28 | ||
5ab7173c RS |
29 | (eval-when-compile (require 'cl)) |
30 | ||
eec82323 LMI |
31 | (require 'gnus) |
32 | (require 'gnus-group) | |
33 | (require 'gnus-start) | |
6748645f | 34 | (require 'gnus-util) |
eec82323 LMI |
35 | |
36 | (defgroup gnus-topic nil | |
37 | "Group topics." | |
38 | :group 'gnus-group) | |
39 | ||
40 | (defvar gnus-topic-mode nil | |
41 | "Minor mode for Gnus group buffers.") | |
42 | ||
43 | (defcustom gnus-topic-mode-hook nil | |
44 | "Hook run in topic mode buffers." | |
45 | :type 'hook | |
46 | :group 'gnus-topic) | |
47 | ||
23f87bed MB |
48 | (when (featurep 'xemacs) |
49 | (add-hook 'gnus-topic-mode-hook 'gnus-xmas-topic-menu-add)) | |
50 | ||
eec82323 LMI |
51 | (defcustom gnus-topic-line-format "%i[ %(%{%n%}%) -- %A ]%v\n" |
52 | "Format of topic lines. | |
53 | It works along the same lines as a normal formatting string, | |
54 | with some simple extensions. | |
55 | ||
56 | %i Indentation based on topic level. | |
57 | %n Topic name. | |
58 | %v Nothing if the topic is visible, \"...\" otherwise. | |
59 | %g Number of groups in the topic. | |
60 | %a Number of unread articles in the groups in the topic. | |
61 | %A Number of unread articles in the groups in the topic and its subtopics. | |
23f87bed MB |
62 | |
63 | General format specifiers can also be used. | |
64 | See Info node `(gnus)Formatting Variables'." | |
65 | :link '(custom-manual "(gnus)Formatting Variables") | |
eec82323 LMI |
66 | :type 'string |
67 | :group 'gnus-topic) | |
68 | ||
69 | (defcustom gnus-topic-indent-level 2 | |
70 | "*How much each subtopic should be indented." | |
71 | :type 'integer | |
72 | :group 'gnus-topic) | |
73 | ||
74 | (defcustom gnus-topic-display-empty-topics t | |
75 | "*If non-nil, display the topic lines even of topics that have no unread articles." | |
76 | :type 'boolean | |
77 | :group 'gnus-topic) | |
78 | ||
79 | ;; Internal variables. | |
80 | ||
81 | (defvar gnus-topic-active-topology nil) | |
82 | (defvar gnus-topic-active-alist nil) | |
6748645f | 83 | (defvar gnus-topic-unreads nil) |
eec82323 LMI |
84 | |
85 | (defvar gnus-topology-checked-p nil | |
86 | "Whether the topology has been checked in this session.") | |
87 | ||
88 | (defvar gnus-topic-killed-topics nil) | |
89 | (defvar gnus-topic-inhibit-change-level nil) | |
eec82323 LMI |
90 | |
91 | (defconst gnus-topic-line-format-alist | |
92 | `((?n name ?s) | |
93 | (?v visible ?s) | |
94 | (?i indentation ?s) | |
95 | (?g number-of-groups ?d) | |
96 | (?a (gnus-topic-articles-in-topic entries) ?d) | |
97 | (?A total-number-of-articles ?d) | |
98 | (?l level ?d))) | |
99 | ||
100 | (defvar gnus-topic-line-format-spec nil) | |
101 | ||
102 | ;;; Utility functions | |
103 | ||
104 | (defun gnus-group-topic-name () | |
105 | "The name of the topic on the current line." | |
01c52d31 | 106 | (let ((topic (get-text-property (point-at-bol) 'gnus-topic))) |
eec82323 LMI |
107 | (and topic (symbol-name topic)))) |
108 | ||
109 | (defun gnus-group-topic-level () | |
110 | "The level of the topic on the current line." | |
01c52d31 | 111 | (get-text-property (point-at-bol) 'gnus-topic-level)) |
eec82323 LMI |
112 | |
113 | (defun gnus-group-topic-unread () | |
114 | "The number of unread articles in topic on the current line." | |
01c52d31 | 115 | (get-text-property (point-at-bol) 'gnus-topic-unread)) |
eec82323 LMI |
116 | |
117 | (defun gnus-topic-unread (topic) | |
118 | "Return the number of unread articles in TOPIC." | |
6748645f | 119 | (or (cdr (assoc topic gnus-topic-unreads)) |
eec82323 LMI |
120 | 0)) |
121 | ||
122 | (defun gnus-group-topic-p () | |
123 | "Return non-nil if the current line is a topic." | |
124 | (gnus-group-topic-name)) | |
125 | ||
126 | (defun gnus-topic-visible-p () | |
127 | "Return non-nil if the current topic is visible." | |
01c52d31 | 128 | (get-text-property (point-at-bol) 'gnus-topic-visible)) |
eec82323 LMI |
129 | |
130 | (defun gnus-topic-articles-in-topic (entries) | |
131 | (let ((total 0) | |
132 | number) | |
133 | (while entries | |
134 | (when (numberp (setq number (car (pop entries)))) | |
135 | (incf total number))) | |
136 | total)) | |
137 | ||
138 | (defun gnus-group-topic (group) | |
139 | "Return the topic GROUP is a member of." | |
140 | (let ((alist gnus-topic-alist) | |
141 | out) | |
142 | (while alist | |
143 | (when (member group (cdar alist)) | |
144 | (setq out (caar alist) | |
145 | alist nil)) | |
146 | (setq alist (cdr alist))) | |
147 | out)) | |
148 | ||
149 | (defun gnus-group-parent-topic (group) | |
150 | "Return the topic GROUP is member of by looking at the group buffer." | |
20a673b2 | 151 | (with-current-buffer gnus-group-buffer |
eec82323 LMI |
152 | (if (gnus-group-goto-group group) |
153 | (gnus-current-topic) | |
154 | (gnus-group-topic group)))) | |
155 | ||
156 | (defun gnus-topic-goto-topic (topic) | |
eec82323 LMI |
157 | (when topic |
158 | (gnus-goto-char (text-property-any (point-min) (point-max) | |
159 | 'gnus-topic (intern topic))))) | |
160 | ||
16409b0b GM |
161 | (defun gnus-topic-jump-to-topic (topic) |
162 | "Go to TOPIC." | |
163 | (interactive | |
164 | (list (completing-read "Go to topic: " | |
165 | (mapcar 'list (gnus-topic-list)) | |
166 | nil t))) | |
01c52d31 MB |
167 | (let ((buffer-read-only nil)) |
168 | (dolist (topic (gnus-current-topics topic)) | |
169 | (unless (gnus-topic-goto-topic topic) | |
170 | (gnus-topic-goto-missing-topic topic) | |
171 | (gnus-topic-display-missing-topic topic)))) | |
16409b0b | 172 | (gnus-topic-goto-topic topic)) |
a1506d29 | 173 | |
eec82323 LMI |
174 | (defun gnus-current-topic () |
175 | "Return the name of the current topic." | |
176 | (let ((result | |
177 | (or (get-text-property (point) 'gnus-topic) | |
178 | (save-excursion | |
179 | (and (gnus-goto-char (previous-single-property-change | |
180 | (point) 'gnus-topic)) | |
181 | (get-text-property (max (1- (point)) (point-min)) | |
182 | 'gnus-topic)))))) | |
183 | (when result | |
184 | (symbol-name result)))) | |
185 | ||
6748645f LMI |
186 | (defun gnus-current-topics (&optional topic) |
187 | "Return a list of all current topics, lowest in hierarchy first. | |
188 | If TOPIC, start with that topic." | |
189 | (let ((topic (or topic (gnus-current-topic))) | |
eec82323 LMI |
190 | topics) |
191 | (while topic | |
192 | (push topic topics) | |
193 | (setq topic (gnus-topic-parent-topic topic))) | |
194 | (nreverse topics))) | |
195 | ||
196 | (defun gnus-group-active-topic-p () | |
197 | "Say whether the current topic comes from the active topics." | |
01c52d31 | 198 | (get-text-property (point-at-bol) 'gnus-active)) |
eec82323 | 199 | |
8b93df01 DL |
200 | (defun gnus-topic-find-groups (topic &optional level all lowest recursive) |
201 | "Return entries for all visible groups in TOPIC. | |
202 | If RECURSIVE is t, return groups in its subtopics too." | |
eec82323 | 203 | (let ((groups (cdr (assoc topic gnus-topic-alist))) |
23f87bed | 204 | info clevel unread group params visible-groups entry active) |
eec82323 | 205 | (setq lowest (or lowest 1)) |
6748645f | 206 | (setq level (or level gnus-level-unsubscribed)) |
eec82323 LMI |
207 | ;; We go through the newsrc to look for matches. |
208 | (while groups | |
209 | (when (setq group (pop groups)) | |
01c52d31 | 210 | (setq entry (gnus-group-entry group) |
eec82323 LMI |
211 | info (nth 2 entry) |
212 | params (gnus-info-params info) | |
213 | active (gnus-active group) | |
214 | unread (or (car entry) | |
215 | (and (not (equal group "dummy.group")) | |
216 | active | |
217 | (- (1+ (cdr active)) (car active)))) | |
218 | clevel (or (gnus-info-level info) | |
6748645f LMI |
219 | (if (member group gnus-zombie-list) |
220 | gnus-level-zombie gnus-level-killed)))) | |
eec82323 | 221 | (and |
16409b0b | 222 | info ; nil means that the group is dead. |
eec82323 LMI |
223 | (<= clevel level) |
224 | (>= clevel lowest) ; Is inside the level we want. | |
225 | (or all | |
16409b0b GM |
226 | (if (or (eq unread t) |
227 | (eq unread nil)) | |
eec82323 LMI |
228 | gnus-group-list-inactive-groups |
229 | (> unread 0)) | |
230 | (and gnus-list-groups-with-ticked-articles | |
231 | (cdr (assq 'tick (gnus-info-marks info)))) | |
16409b0b | 232 | ;; Has right readedness. |
eec82323 LMI |
233 | ;; Check for permanent visibility. |
234 | (and gnus-permanently-visible-groups | |
235 | (string-match gnus-permanently-visible-groups group)) | |
236 | (memq 'visible params) | |
237 | (cdr (assq 'visible params))) | |
238 | ;; Add this group to the list of visible groups. | |
239 | (push (or entry group) visible-groups))) | |
8b93df01 | 240 | (setq visible-groups (nreverse visible-groups)) |
a1506d29 | 241 | (when recursive |
8b93df01 DL |
242 | (if (eq recursive t) |
243 | (setq recursive (cdr (gnus-topic-find-topology topic)))) | |
01c52d31 MB |
244 | (dolist (topic-topology (cdr recursive)) |
245 | (setq visible-groups | |
246 | (nconc visible-groups | |
247 | (gnus-topic-find-groups | |
248 | (caar topic-topology) | |
249 | level all lowest topic-topology))))) | |
8b93df01 | 250 | visible-groups)) |
eec82323 | 251 | |
23f87bed MB |
252 | (defun gnus-topic-goto-previous-topic (n) |
253 | "Go to the N'th previous topic." | |
254 | (interactive "p") | |
255 | (gnus-topic-goto-next-topic (- n))) | |
256 | ||
257 | (defun gnus-topic-goto-next-topic (n) | |
258 | "Go to the N'th next topic." | |
259 | (interactive "p") | |
260 | (let ((backward (< n 0)) | |
261 | (n (abs n)) | |
262 | (topic (gnus-current-topic))) | |
263 | (while (and (> n 0) | |
264 | (setq topic | |
265 | (if backward | |
266 | (gnus-topic-previous-topic topic) | |
267 | (gnus-topic-next-topic topic)))) | |
268 | (gnus-topic-goto-topic topic) | |
269 | (setq n (1- n))) | |
270 | (when (/= 0 n) | |
271 | (gnus-message 7 "No more topics")) | |
272 | n)) | |
273 | ||
eec82323 LMI |
274 | (defun gnus-topic-previous-topic (topic) |
275 | "Return the previous topic on the same level as TOPIC." | |
276 | (let ((top (cddr (gnus-topic-find-topology | |
277 | (gnus-topic-parent-topic topic))))) | |
278 | (unless (equal topic (caaar top)) | |
279 | (while (and top (not (equal (caaadr top) topic))) | |
280 | (setq top (cdr top))) | |
281 | (caaar top)))) | |
282 | ||
283 | (defun gnus-topic-parent-topic (topic &optional topology) | |
284 | "Return the parent of TOPIC." | |
285 | (unless topology | |
286 | (setq topology gnus-topic-topology)) | |
287 | (let ((parent (car (pop topology))) | |
288 | result found) | |
289 | (while (and topology | |
290 | (not (setq found (equal (caaar topology) topic))) | |
291 | (not (setq result (gnus-topic-parent-topic | |
292 | topic (car topology))))) | |
293 | (setq topology (cdr topology))) | |
294 | (or result (and found parent)))) | |
295 | ||
296 | (defun gnus-topic-next-topic (topic &optional previous) | |
297 | "Return the next sibling of TOPIC." | |
298 | (let ((parentt (cddr (gnus-topic-find-topology | |
299 | (gnus-topic-parent-topic topic)))) | |
300 | prev) | |
301 | (while (and parentt | |
302 | (not (equal (caaar parentt) topic))) | |
303 | (setq prev (caaar parentt) | |
304 | parentt (cdr parentt))) | |
305 | (if previous | |
306 | prev | |
307 | (caaadr parentt)))) | |
308 | ||
309 | (defun gnus-topic-forward-topic (num) | |
310 | "Go to the next topic on the same level as the current one." | |
311 | (let* ((topic (gnus-current-topic)) | |
312 | (way (if (< num 0) 'gnus-topic-previous-topic | |
313 | 'gnus-topic-next-topic)) | |
314 | (num (abs num))) | |
315 | (while (and (not (zerop num)) | |
316 | (setq topic (funcall way topic))) | |
317 | (when (gnus-topic-goto-topic topic) | |
318 | (decf num))) | |
319 | (unless (zerop num) | |
320 | (goto-char (point-max))) | |
321 | num)) | |
322 | ||
323 | (defun gnus-topic-find-topology (topic &optional topology level remove) | |
324 | "Return the topology of TOPIC." | |
325 | (unless topology | |
326 | (setq topology gnus-topic-topology) | |
327 | (setq level 0)) | |
328 | (let ((top topology) | |
329 | result) | |
330 | (if (equal (caar topology) topic) | |
331 | (progn | |
332 | (when remove | |
333 | (delq topology remove)) | |
334 | (cons level topology)) | |
335 | (setq topology (cdr topology)) | |
336 | (while (and topology | |
337 | (not (setq result (gnus-topic-find-topology | |
338 | topic (car topology) (1+ level) | |
339 | (and remove top))))) | |
340 | (setq topology (cdr topology))) | |
341 | result))) | |
342 | ||
343 | (defvar gnus-tmp-topics nil) | |
344 | (defun gnus-topic-list (&optional topology) | |
345 | "Return a list of all topics in the topology." | |
346 | (unless topology | |
347 | (setq topology gnus-topic-topology | |
348 | gnus-tmp-topics nil)) | |
349 | (push (caar topology) gnus-tmp-topics) | |
01c52d31 | 350 | (mapc 'gnus-topic-list (cdr topology)) |
eec82323 LMI |
351 | gnus-tmp-topics) |
352 | ||
353 | ;;; Topic parameter jazz | |
354 | ||
355 | (defun gnus-topic-parameters (topic) | |
356 | "Return the parameters for TOPIC." | |
357 | (let ((top (gnus-topic-find-topology topic))) | |
358 | (when top | |
359 | (nth 3 (cadr top))))) | |
360 | ||
361 | (defun gnus-topic-set-parameters (topic parameters) | |
362 | "Set the topic parameters of TOPIC to PARAMETERS." | |
363 | (let ((top (gnus-topic-find-topology topic))) | |
364 | (unless top | |
365 | (error "No such topic: %s" topic)) | |
366 | ;; We may have to extend if there is no parameters here | |
367 | ;; to begin with. | |
368 | (unless (nthcdr 2 (cadr top)) | |
369 | (nconc (cadr top) (list nil))) | |
370 | (unless (nthcdr 3 (cadr top)) | |
371 | (nconc (cadr top) (list nil))) | |
372 | (setcar (nthcdr 3 (cadr top)) parameters) | |
373 | (gnus-dribble-enter | |
374 | (format "(gnus-topic-set-parameters %S '%S)" topic parameters)))) | |
375 | ||
376 | (defun gnus-group-topic-parameters (group) | |
01c52d31 MB |
377 | "Compute the group parameters for GROUP in topic mode. |
378 | Possibly inherit parameters from topics above GROUP." | |
6748645f | 379 | (let ((params-list (copy-sequence (gnus-group-get-parameter group)))) |
eec82323 | 380 | (save-excursion |
01c52d31 MB |
381 | (gnus-topic-hierarchical-parameters |
382 | ;; First we try to go to the group within the group buffer and find the | |
383 | ;; topic for the group that way. This hopefully copes well with groups | |
384 | ;; that are in more than one topic. Failing that (i.e. when the group | |
385 | ;; isn't visible in the group buffer) we find a topic for the group via | |
386 | ;; gnus-group-topic. | |
387 | (or (and (gnus-group-goto-group group) | |
388 | (gnus-current-topic)) | |
389 | (gnus-group-topic group)) | |
390 | params-list)))) | |
391 | ||
392 | (defun gnus-topic-hierarchical-parameters (topic &optional group-params-list) | |
393 | "Compute the topic parameters for TOPIC. | |
394 | Possibly inherit parameters from topics above TOPIC. | |
395 | If optional argument GROUP-PARAMS-LIST is non-nil, use it as the basis for | |
396 | inheritance." | |
397 | (let ((params-list | |
398 | ;; We probably have lots of nil elements here, so we remove them. | |
399 | ;; Probably faster than doing this "properly". | |
400 | (delq nil (cons group-params-list | |
401 | (mapcar 'gnus-topic-parameters | |
402 | (gnus-current-topics topic))))) | |
403 | param out params) | |
6748645f LMI |
404 | ;; Now we have all the parameters, so we go through them |
405 | ;; and do inheritance in the obvious way. | |
01c52d31 MB |
406 | (let (posting-style) |
407 | (while (setq params (pop params-list)) | |
408 | (while (setq param (pop params)) | |
409 | (when (atom param) | |
410 | (setq param (cons param t))) | |
411 | (cond ((eq (car param) 'posting-style) | |
412 | (let ((param (cdr param)) | |
413 | elt) | |
414 | (while (setq elt (pop param)) | |
415 | (unless (assoc (car elt) posting-style) | |
416 | (push elt posting-style))))) | |
417 | (t | |
418 | (unless (assq (car param) out) | |
419 | (push param out)))))) | |
420 | (and posting-style (push (cons 'posting-style posting-style) out))) | |
6748645f LMI |
421 | ;; Return the resulting parameter list. |
422 | out)) | |
eec82323 LMI |
423 | |
424 | ;;; General utility functions | |
425 | ||
426 | (defun gnus-topic-enter-dribble () | |
427 | (gnus-dribble-enter | |
428 | (format "(setq gnus-topic-topology '%S)" gnus-topic-topology))) | |
429 | ||
430 | ;;; Generating group buffers | |
431 | ||
23f87bed | 432 | (defun gnus-group-prepare-topics (level &optional predicate lowest |
16409b0b | 433 | regexp list-topic topic-level) |
6748645f LMI |
434 | "List all newsgroups with unread articles of level LEVEL or lower. |
435 | Use the `gnus-group-topics' to sort the groups. | |
23f87bed MB |
436 | If PREDICTE is a function, list groups that the function returns non-nil; |
437 | if it is t, list groups that have no unread articles. | |
eec82323 LMI |
438 | If LOWEST is non-nil, list all newsgroups of level LOWEST or higher." |
439 | (set-buffer gnus-group-buffer) | |
440 | (let ((buffer-read-only nil) | |
23f87bed MB |
441 | (lowest (or lowest 1)) |
442 | (not-in-list | |
443 | (and gnus-group-listed-groups | |
444 | (copy-sequence gnus-group-listed-groups)))) | |
eec82323 | 445 | |
23f87bed | 446 | (gnus-update-format-specifications nil 'topic) |
e84b4b86 | 447 | |
eec82323 LMI |
448 | (when (or (not gnus-topic-alist) |
449 | (not gnus-topology-checked-p)) | |
450 | (gnus-topic-check-topology)) | |
451 | ||
452 | (unless list-topic | |
453 | (erase-buffer)) | |
454 | ||
455 | ;; List dead groups? | |
23f87bed MB |
456 | (when (or gnus-group-listed-groups |
457 | (and (>= level gnus-level-zombie) | |
458 | (<= lowest gnus-level-zombie))) | |
eec82323 LMI |
459 | (gnus-group-prepare-flat-list-dead |
460 | (setq gnus-zombie-list (sort gnus-zombie-list 'string<)) | |
461 | gnus-level-zombie ?Z | |
462 | regexp)) | |
463 | ||
23f87bed MB |
464 | (when (or gnus-group-listed-groups |
465 | (and (>= level gnus-level-killed) | |
466 | (<= lowest gnus-level-killed))) | |
eec82323 LMI |
467 | (gnus-group-prepare-flat-list-dead |
468 | (setq gnus-killed-list (sort gnus-killed-list 'string<)) | |
23f87bed MB |
469 | gnus-level-killed ?K regexp) |
470 | (when not-in-list | |
471 | (unless gnus-killed-hashtb | |
472 | (gnus-make-hashtable-from-killed)) | |
473 | (gnus-group-prepare-flat-list-dead | |
474 | (gnus-remove-if (lambda (group) | |
01c52d31 | 475 | (or (gnus-group-entry group) |
23f87bed MB |
476 | (gnus-gethash group gnus-killed-hashtb))) |
477 | not-in-list) | |
478 | gnus-level-killed ?K regexp))) | |
eec82323 LMI |
479 | |
480 | ;; Use topics. | |
481 | (prog1 | |
23f87bed MB |
482 | (when (or (< lowest gnus-level-zombie) |
483 | gnus-group-listed-groups) | |
eec82323 LMI |
484 | (if list-topic |
485 | (let ((top (gnus-topic-find-topology list-topic))) | |
486 | (gnus-topic-prepare-topic (cdr top) (car top) | |
23f87bed MB |
487 | (or topic-level level) predicate |
488 | nil lowest regexp)) | |
eec82323 | 489 | (gnus-topic-prepare-topic gnus-topic-topology 0 |
23f87bed MB |
490 | (or topic-level level) predicate |
491 | nil lowest regexp))) | |
eec82323 | 492 | (gnus-group-set-mode-line) |
23f87bed | 493 | (setq gnus-group-list-mode (cons level predicate)) |
6748645f | 494 | (gnus-run-hooks 'gnus-group-prepare-hook)))) |
eec82323 | 495 | |
23f87bed MB |
496 | (defun gnus-topic-prepare-topic (topicl level &optional list-level |
497 | predicate silent | |
498 | lowest regexp) | |
eec82323 LMI |
499 | "Insert TOPIC into the group buffer. |
500 | If SILENT, don't insert anything. Return the number of unread | |
501 | articles in the topic and its subtopics." | |
502 | (let* ((type (pop topicl)) | |
6748645f | 503 | (entries (gnus-topic-find-groups |
23f87bed MB |
504 | (car type) |
505 | (if gnus-group-listed-groups | |
506 | gnus-level-killed | |
507 | list-level) | |
508 | (or predicate gnus-group-listed-groups | |
16409b0b | 509 | (cdr (assq 'visible |
6748645f LMI |
510 | (gnus-topic-hierarchical-parameters |
511 | (car type))))) | |
23f87bed | 512 | (if gnus-group-listed-groups 0 lowest))) |
eec82323 LMI |
513 | (visiblep (and (eq (nth 1 type) 'visible) (not silent))) |
514 | (gnus-group-indentation | |
515 | (make-string (* gnus-topic-indent-level level) ? )) | |
516 | (beg (progn (beginning-of-line) (point))) | |
517 | (topicl (reverse topicl)) | |
518 | (all-entries entries) | |
519 | (point-max (point-max)) | |
520 | (unread 0) | |
521 | (topic (car type)) | |
522 | info entry end active tick) | |
523 | ;; Insert any sub-topics. | |
524 | (while topicl | |
525 | (incf unread | |
526 | (gnus-topic-prepare-topic | |
23f87bed MB |
527 | (pop topicl) (1+ level) list-level predicate |
528 | (not visiblep) lowest regexp))) | |
eec82323 LMI |
529 | (setq end (point)) |
530 | (goto-char beg) | |
531 | ;; Insert all the groups that belong in this topic. | |
532 | (while (setq entry (pop entries)) | |
23f87bed MB |
533 | (when (if (stringp entry) |
534 | (gnus-group-prepare-logic | |
535 | entry | |
536 | (and | |
537 | (or (not gnus-group-listed-groups) | |
538 | (if (< list-level gnus-level-zombie) nil | |
539 | (let ((entry-level | |
540 | (if (member entry gnus-zombie-list) | |
541 | gnus-level-zombie gnus-level-killed))) | |
542 | (and (<= entry-level list-level) | |
543 | (>= entry-level lowest))))) | |
544 | (cond | |
545 | ((stringp regexp) | |
546 | (string-match regexp entry)) | |
547 | ((functionp regexp) | |
548 | (funcall regexp entry)) | |
549 | ((null regexp) t) | |
550 | (t nil)))) | |
551 | (setq info (nth 2 entry)) | |
552 | (gnus-group-prepare-logic | |
553 | (gnus-info-group info) | |
554 | (and (or (not gnus-group-listed-groups) | |
555 | (let ((entry-level (gnus-info-level info))) | |
556 | (and (<= entry-level list-level) | |
557 | (>= entry-level lowest)))) | |
558 | (or (not (functionp predicate)) | |
559 | (funcall predicate info)) | |
560 | (or (not (stringp regexp)) | |
561 | (string-match regexp (gnus-info-group info)))))) | |
562 | (when visiblep | |
563 | (if (stringp entry) | |
564 | ;; Dead groups. | |
565 | (gnus-group-insert-group-line | |
566 | entry (if (member entry gnus-zombie-list) | |
567 | gnus-level-zombie gnus-level-killed) | |
568 | nil (- (1+ (cdr (setq active (gnus-active entry)))) | |
569 | (car active)) | |
570 | nil) | |
571 | ;; Living groups. | |
572 | (when (setq info (nth 2 entry)) | |
573 | (gnus-group-insert-group-line | |
574 | (gnus-info-group info) | |
575 | (gnus-info-level info) (gnus-info-marks info) | |
576 | (car entry) (gnus-info-method info))))) | |
577 | (when (and (listp entry) | |
578 | (numberp (car entry))) | |
579 | (incf unread (car entry))) | |
580 | (when (listp entry) | |
581 | (setq tick t)))) | |
eec82323 LMI |
582 | (goto-char beg) |
583 | ;; Insert the topic line. | |
584 | (when (and (not silent) | |
585 | (or gnus-topic-display-empty-topics ;We want empty topics | |
586 | (not (zerop unread)) ;Non-empty | |
587 | tick ;Ticked articles | |
588 | (/= point-max (point-max)))) ;Unactivated groups | |
589 | (gnus-extent-start-open (point)) | |
590 | (gnus-topic-insert-topic-line | |
591 | (car type) visiblep | |
592 | (not (eq (nth 2 type) 'hidden)) | |
593 | level all-entries unread)) | |
6748645f | 594 | (gnus-topic-update-unreads (car type) unread) |
85fd8002 RS |
595 | (when gnus-group-update-tool-bar |
596 | (gnus-put-text-property beg end 'point-entered | |
597 | 'gnus-tool-bar-update) | |
598 | (gnus-put-text-property beg end 'point-left | |
599 | 'gnus-tool-bar-update)) | |
eec82323 LMI |
600 | (goto-char end) |
601 | unread)) | |
602 | ||
603 | (defun gnus-topic-remove-topic (&optional insert total-remove hide in-level) | |
604 | "Remove the current topic." | |
605 | (let ((topic (gnus-group-topic-name)) | |
606 | (level (gnus-group-topic-level)) | |
607 | (beg (progn (beginning-of-line) (point))) | |
608 | buffer-read-only) | |
609 | (when topic | |
610 | (while (and (zerop (forward-line 1)) | |
611 | (> (or (gnus-group-topic-level) (1+ level)) level))) | |
612 | (delete-region beg (point)) | |
613 | ;; Do the change in this rather odd manner because it has been | |
614 | ;; reported that some topics share parts of some lists, for some | |
615 | ;; reason. I have been unable to determine why this is the | |
616 | ;; case, but this hack seems to take care of things. | |
617 | (let ((data (cadr (gnus-topic-find-topology topic)))) | |
618 | (setcdr data | |
619 | (list (if insert 'visible 'invisible) | |
16409b0b | 620 | (caddr data) |
eec82323 LMI |
621 | (cadddr data)))) |
622 | (if total-remove | |
623 | (setq gnus-topic-alist | |
624 | (delq (assoc topic gnus-topic-alist) gnus-topic-alist)) | |
625 | (gnus-topic-insert-topic topic in-level))))) | |
626 | ||
627 | (defun gnus-topic-insert-topic (topic &optional level) | |
628 | "Insert TOPIC." | |
629 | (gnus-group-prepare-topics | |
630 | (car gnus-group-list-mode) (cdr gnus-group-list-mode) | |
631 | nil nil topic level)) | |
632 | ||
16409b0b | 633 | (defun gnus-topic-fold (&optional insert topic) |
eec82323 | 634 | "Remove/insert the current topic." |
16409b0b | 635 | (let ((topic (or topic (gnus-group-topic-name)))) |
eec82323 LMI |
636 | (when topic |
637 | (save-excursion | |
638 | (if (not (gnus-group-active-topic-p)) | |
639 | (gnus-topic-remove-topic | |
640 | (or insert (not (gnus-topic-visible-p)))) | |
641 | (let ((gnus-topic-topology gnus-topic-active-topology) | |
642 | (gnus-topic-alist gnus-topic-active-alist) | |
643 | (gnus-group-list-mode (cons 5 t))) | |
644 | (gnus-topic-remove-topic | |
645 | (or insert (not (gnus-topic-visible-p))) nil nil 9) | |
646 | (gnus-topic-enter-dribble))))))) | |
647 | ||
648 | (defun gnus-topic-insert-topic-line (name visiblep shownp level entries | |
649 | &optional unread) | |
650 | (let* ((visible (if visiblep "" "...")) | |
651 | (indentation (make-string (* gnus-topic-indent-level level) ? )) | |
652 | (total-number-of-articles unread) | |
653 | (number-of-groups (length entries)) | |
6748645f LMI |
654 | (active-topic (eq gnus-topic-alist gnus-topic-active-alist)) |
655 | gnus-tmp-header) | |
656 | (gnus-topic-update-unreads name unread) | |
eec82323 LMI |
657 | (beginning-of-line) |
658 | ;; Insert the text. | |
16409b0b GM |
659 | (if shownp |
660 | (gnus-add-text-properties | |
661 | (point) | |
662 | (prog1 (1+ (point)) | |
663 | (eval gnus-topic-line-format-spec)) | |
664 | (list 'gnus-topic (intern name) | |
665 | 'gnus-topic-level level | |
666 | 'gnus-topic-unread unread | |
667 | 'gnus-active active-topic | |
668 | 'gnus-topic-visible visiblep))))) | |
eec82323 | 669 | |
6748645f LMI |
670 | (defun gnus-topic-update-unreads (topic unreads) |
671 | (setq gnus-topic-unreads (delq (assoc topic gnus-topic-unreads) | |
672 | gnus-topic-unreads)) | |
673 | (push (cons topic unreads) gnus-topic-unreads)) | |
674 | ||
eec82323 LMI |
675 | (defun gnus-topic-update-topics-containing-group (group) |
676 | "Update all topics that have GROUP as a member." | |
677 | (when (and (eq major-mode 'gnus-group-mode) | |
678 | gnus-topic-mode) | |
679 | (save-excursion | |
680 | (let ((alist gnus-topic-alist)) | |
681 | ;; This is probably not entirely correct. If a topic | |
682 | ;; isn't shown, then it's not updated. But the updating | |
683 | ;; should be performed in any case, since the topic's | |
684 | ;; parent should be updated. Pfft. | |
685 | (while alist | |
686 | (when (and (member group (cdar alist)) | |
687 | (gnus-topic-goto-topic (caar alist))) | |
688 | (gnus-topic-update-topic-line (caar alist))) | |
689 | (pop alist)))))) | |
690 | ||
691 | (defun gnus-topic-update-topic () | |
692 | "Update all parent topics to the current group." | |
693 | (when (and (eq major-mode 'gnus-group-mode) | |
694 | gnus-topic-mode) | |
695 | (let ((group (gnus-group-group-name)) | |
23f87bed | 696 | (m (point-marker)) |
eec82323 LMI |
697 | (buffer-read-only nil)) |
698 | (when (and group | |
699 | (gnus-get-info group) | |
700 | (gnus-topic-goto-topic (gnus-current-topic))) | |
701 | (gnus-topic-update-topic-line (gnus-group-topic-name)) | |
a8151ef7 LMI |
702 | (goto-char m) |
703 | (set-marker m nil) | |
eec82323 LMI |
704 | (gnus-group-position-point))))) |
705 | ||
706 | (defun gnus-topic-goto-missing-group (group) | |
707 | "Place point where GROUP is supposed to be inserted." | |
708 | (let* ((topic (gnus-group-topic group)) | |
709 | (groups (cdr (assoc topic gnus-topic-alist))) | |
710 | (g (cdr (member group groups))) | |
16409b0b GM |
711 | (unfound t) |
712 | entry) | |
eec82323 | 713 | ;; Try to jump to a visible group. |
23f87bed MB |
714 | (while (and g |
715 | (not (gnus-group-goto-group (car g) t))) | |
eec82323 LMI |
716 | (pop g)) |
717 | ;; It wasn't visible, so we try to see where to insert it. | |
718 | (when (not g) | |
719 | (setq g (cdr (member group (reverse groups)))) | |
720 | (while (and g unfound) | |
721 | (when (gnus-group-goto-group (pop g) t) | |
722 | (forward-line 1) | |
723 | (setq unfound nil))) | |
724 | (when (and unfound | |
725 | topic | |
726 | (not (gnus-topic-goto-missing-topic topic))) | |
23f87bed MB |
727 | (gnus-topic-display-missing-topic topic))))) |
728 | ||
729 | (defun gnus-topic-display-missing-topic (topic) | |
730 | "Insert topic lines recursively for missing topics." | |
731 | (let ((parent (gnus-topic-find-topology | |
732 | (gnus-topic-parent-topic topic)))) | |
733 | (when (and parent | |
734 | (not (gnus-topic-goto-missing-topic (caadr parent)))) | |
735 | (gnus-topic-display-missing-topic (caadr parent)))) | |
736 | (gnus-topic-goto-missing-topic topic) | |
01c52d31 MB |
737 | ;; Skip past all groups in the topic we're in. |
738 | (while (gnus-group-group-name) | |
739 | (forward-line 1)) | |
23f87bed MB |
740 | (let* ((top (gnus-topic-find-topology topic)) |
741 | (children (cddr top)) | |
742 | (type (cadr top)) | |
743 | (unread 0) | |
744 | (entries (gnus-topic-find-groups | |
745 | (car type) (car gnus-group-list-mode) | |
746 | (cdr gnus-group-list-mode))) | |
747 | entry) | |
748 | (while children | |
749 | (incf unread (gnus-topic-unread (caar (pop children))))) | |
750 | (while (setq entry (pop entries)) | |
751 | (when (numberp (car entry)) | |
752 | (incf unread (car entry)))) | |
753 | (gnus-topic-insert-topic-line | |
754 | topic t t (car (gnus-topic-find-topology topic)) nil unread))) | |
eec82323 LMI |
755 | |
756 | (defun gnus-topic-goto-missing-topic (topic) | |
757 | (if (gnus-topic-goto-topic topic) | |
758 | (forward-line 1) | |
759 | ;; Topic not displayed. | |
760 | (let* ((top (gnus-topic-find-topology | |
761 | (gnus-topic-parent-topic topic))) | |
762 | (tp (reverse (cddr top)))) | |
16409b0b GM |
763 | (if (not top) |
764 | (gnus-topic-insert-topic-line | |
765 | topic t t (car (gnus-topic-find-topology topic)) nil 0) | |
766 | (while (not (equal (caaar tp) topic)) | |
767 | (setq tp (cdr tp))) | |
768 | (pop tp) | |
769 | (while (and tp | |
770 | (not (gnus-topic-goto-topic (caaar tp)))) | |
771 | (pop tp)) | |
772 | (if tp | |
773 | (gnus-topic-forward-topic 1) | |
774 | (gnus-topic-goto-missing-topic (caadr top))))) | |
eec82323 LMI |
775 | nil)) |
776 | ||
777 | (defun gnus-topic-update-topic-line (topic-name &optional reads) | |
778 | (let* ((top (gnus-topic-find-topology topic-name)) | |
779 | (type (cadr top)) | |
780 | (children (cddr top)) | |
781 | (entries (gnus-topic-find-groups | |
782 | (car type) (car gnus-group-list-mode) | |
783 | (cdr gnus-group-list-mode))) | |
784 | (parent (gnus-topic-parent-topic topic-name)) | |
785 | (all-entries entries) | |
786 | (unread 0) | |
6748645f | 787 | old-unread entry new-unread) |
eec82323 LMI |
788 | (when (gnus-topic-goto-topic (car type)) |
789 | ;; Tally all the groups that belong in this topic. | |
790 | (if reads | |
791 | (setq unread (- (gnus-group-topic-unread) reads)) | |
792 | (while children | |
793 | (incf unread (gnus-topic-unread (caar (pop children))))) | |
794 | (while (setq entry (pop entries)) | |
795 | (when (numberp (car entry)) | |
796 | (incf unread (car entry))))) | |
797 | (setq old-unread (gnus-group-topic-unread)) | |
798 | ;; Insert the topic line. | |
799 | (gnus-topic-insert-topic-line | |
800 | (car type) (gnus-topic-visible-p) | |
801 | (not (eq (nth 2 type) 'hidden)) | |
802 | (gnus-group-topic-level) all-entries unread) | |
6748645f LMI |
803 | (gnus-delete-line) |
804 | (forward-line -1) | |
805 | (setq new-unread (gnus-group-topic-unread))) | |
eec82323 LMI |
806 | (when parent |
807 | (forward-line -1) | |
808 | (gnus-topic-update-topic-line | |
6748645f LMI |
809 | parent |
810 | (- (or old-unread 0) (or new-unread 0)))) | |
eec82323 LMI |
811 | unread)) |
812 | ||
813 | (defun gnus-topic-group-indentation () | |
814 | (make-string | |
815 | (* gnus-topic-indent-level | |
816 | (or (save-excursion | |
817 | (forward-line -1) | |
818 | (gnus-topic-goto-topic (gnus-current-topic)) | |
819 | (gnus-group-topic-level)) | |
820 | 0)) | |
821 | ? )) | |
822 | ||
823 | ;;; Initialization | |
824 | ||
825 | (gnus-add-shutdown 'gnus-topic-close 'gnus) | |
826 | ||
827 | (defun gnus-topic-close () | |
828 | (setq gnus-topic-active-topology nil | |
829 | gnus-topic-active-alist nil | |
830 | gnus-topic-killed-topics nil | |
eec82323 LMI |
831 | gnus-topology-checked-p nil)) |
832 | ||
833 | (defun gnus-topic-check-topology () | |
834 | ;; The first time we set the topology to whatever we have | |
835 | ;; gotten here, which can be rather random. | |
836 | (unless gnus-topic-alist | |
837 | (gnus-topic-init-alist)) | |
838 | ||
839 | (setq gnus-topology-checked-p t) | |
840 | ;; Go through the topic alist and make sure that all topics | |
841 | ;; are in the topic topology. | |
842 | (let ((topics (gnus-topic-list)) | |
843 | (alist gnus-topic-alist) | |
844 | changed) | |
845 | (while alist | |
846 | (unless (member (caar alist) topics) | |
847 | (nconc gnus-topic-topology | |
848 | (list (list (list (caar alist) 'visible)))) | |
849 | (setq changed t)) | |
850 | (setq alist (cdr alist))) | |
851 | (when changed | |
852 | (gnus-topic-enter-dribble)) | |
853 | ;; Conversely, go through the topology and make sure that all | |
854 | ;; topologies have alists. | |
855 | (while topics | |
856 | (unless (assoc (car topics) gnus-topic-alist) | |
857 | (push (list (car topics)) gnus-topic-alist)) | |
858 | (pop topics))) | |
859 | ;; Go through all living groups and make sure that | |
860 | ;; they belong to some topic. | |
01c52d31 | 861 | (let* ((tgroups (apply 'append (mapcar 'cdr gnus-topic-alist))) |
a8151ef7 | 862 | (entry (last (assoc (caar gnus-topic-topology) gnus-topic-alist))) |
eec82323 LMI |
863 | (newsrc (cdr gnus-newsrc-alist)) |
864 | group) | |
865 | (while newsrc | |
866 | (unless (member (setq group (gnus-info-group (pop newsrc))) tgroups) | |
a8151ef7 LMI |
867 | (setcdr entry (list group)) |
868 | (setq entry (cdr entry))))) | |
eec82323 LMI |
869 | ;; Go through all topics and make sure they contain only living groups. |
870 | (let ((alist gnus-topic-alist) | |
871 | topic) | |
872 | (while (setq topic (pop alist)) | |
873 | (while (cdr topic) | |
a8151ef7 | 874 | (if (and (cadr topic) |
01c52d31 | 875 | (gnus-group-entry (cadr topic))) |
eec82323 LMI |
876 | (setq topic (cdr topic)) |
877 | (setcdr topic (cddr topic))))))) | |
878 | ||
879 | (defun gnus-topic-init-alist () | |
880 | "Initialize the topic structures." | |
881 | (setq gnus-topic-topology | |
882 | (cons (list "Gnus" 'visible) | |
883 | (mapcar (lambda (topic) | |
884 | (list (list (car topic) 'visible))) | |
885 | '(("misc"))))) | |
886 | (setq gnus-topic-alist | |
887 | (list (cons "misc" | |
888 | (mapcar (lambda (info) (gnus-info-group info)) | |
889 | (cdr gnus-newsrc-alist))) | |
890 | (list "Gnus"))) | |
891 | (gnus-topic-enter-dribble)) | |
892 | ||
893 | ;;; Maintenance | |
894 | ||
895 | (defun gnus-topic-clean-alist () | |
896 | "Remove bogus groups from the topic alist." | |
897 | (let ((topic-alist gnus-topic-alist) | |
898 | result topic) | |
899 | (unless gnus-killed-hashtb | |
900 | (gnus-make-hashtable-from-killed)) | |
901 | (while (setq topic (pop topic-alist)) | |
902 | (let ((topic-name (pop topic)) | |
903 | group filtered-topic) | |
904 | (while (setq group (pop topic)) | |
01c52d31 | 905 | (when (and (or (gnus-active group) |
eec82323 LMI |
906 | (gnus-info-method (gnus-get-info group))) |
907 | (not (gnus-gethash group gnus-killed-hashtb))) | |
908 | (push group filtered-topic))) | |
909 | (push (cons topic-name (nreverse filtered-topic)) result))) | |
910 | (setq gnus-topic-alist (nreverse result)))) | |
911 | ||
a8151ef7 | 912 | (defun gnus-topic-change-level (group level oldlevel &optional previous) |
eec82323 | 913 | "Run when changing levels to enter/remove groups from topics." |
20a673b2 | 914 | (with-current-buffer gnus-group-buffer |
6748645f LMI |
915 | (let ((buffer-read-only nil)) |
916 | (unless gnus-topic-inhibit-change-level | |
917 | (gnus-group-goto-group (or (car (nth 2 previous)) group)) | |
918 | (when (and gnus-topic-mode | |
919 | gnus-topic-alist | |
920 | (not gnus-topic-inhibit-change-level)) | |
921 | ;; Remove the group from the topics. | |
922 | (if (and (< oldlevel gnus-level-zombie) | |
923 | (>= level gnus-level-zombie)) | |
924 | (let ((alist gnus-topic-alist)) | |
925 | (while (gnus-group-goto-group group) | |
926 | (gnus-delete-line)) | |
927 | (while alist | |
928 | (when (member group (car alist)) | |
929 | (setcdr (car alist) (delete group (cdar alist)))) | |
930 | (pop alist))) | |
931 | ;; If the group is subscribed we enter it into the topics. | |
932 | (when (and (< level gnus-level-zombie) | |
933 | (>= oldlevel gnus-level-zombie)) | |
934 | (let* ((prev (gnus-group-group-name)) | |
935 | (gnus-topic-inhibit-change-level t) | |
936 | (gnus-group-indentation | |
937 | (make-string | |
938 | (* gnus-topic-indent-level | |
939 | (or (save-excursion | |
940 | (gnus-topic-goto-topic (gnus-current-topic)) | |
941 | (gnus-group-topic-level)) | |
942 | 0)) | |
943 | ? )) | |
944 | (yanked (list group)) | |
945 | alist talist end) | |
23f87bed MB |
946 | ;; Then we enter the yanked groups into the topics |
947 | ;; they belong to. | |
6748645f LMI |
948 | (when (setq alist (assoc (save-excursion |
949 | (forward-line -1) | |
950 | (or | |
951 | (gnus-current-topic) | |
952 | (caar gnus-topic-topology))) | |
953 | gnus-topic-alist)) | |
954 | (setq talist alist) | |
955 | (when (stringp yanked) | |
956 | (setq yanked (list yanked))) | |
957 | (if (not prev) | |
958 | (nconc alist yanked) | |
959 | (if (not (cdr alist)) | |
960 | (setcdr alist (nconc yanked (cdr alist))) | |
961 | (while (and (not end) (cdr alist)) | |
962 | (when (equal (cadr alist) prev) | |
963 | (setcdr alist (nconc yanked (cdr alist))) | |
964 | (setq end t)) | |
965 | (setq alist (cdr alist))) | |
966 | (unless end | |
967 | (nconc talist yanked)))))) | |
968 | (gnus-topic-update-topic)))))))) | |
eec82323 LMI |
969 | |
970 | (defun gnus-topic-goto-next-group (group props) | |
971 | "Go to group or the next group after group." | |
972 | (if (not group) | |
973 | (if (not (memq 'gnus-topic props)) | |
974 | (goto-char (point-max)) | |
975 | (gnus-topic-goto-topic (symbol-name (cadr (memq 'gnus-topic props))))) | |
976 | (if (gnus-group-goto-group group) | |
977 | t | |
978 | ;; The group is no longer visible. | |
979 | (let* ((list (assoc (gnus-group-topic group) gnus-topic-alist)) | |
980 | (after (cdr (member group (cdr list))))) | |
981 | ;; First try to put point on a group after the current one. | |
982 | (while (and after | |
983 | (not (gnus-group-goto-group (car after)))) | |
984 | (setq after (cdr after))) | |
985 | ;; Then try to put point on a group before point. | |
986 | (unless after | |
987 | (setq after (cdr (member group (reverse (cdr list))))) | |
988 | (while (and after | |
989 | (not (gnus-group-goto-group (car after)))) | |
990 | (setq after (cdr after)))) | |
991 | ;; Finally, just put point on the topic. | |
992 | (if (not (car list)) | |
993 | (goto-char (point-min)) | |
994 | (unless after | |
995 | (gnus-topic-goto-topic (car list)) | |
996 | (setq after nil))) | |
997 | t)))) | |
998 | ||
999 | ;;; Topic-active functions | |
1000 | ||
1001 | (defun gnus-topic-grok-active (&optional force) | |
1002 | "Parse all active groups and create topic structures for them." | |
1003 | ;; First we make sure that we have really read the active file. | |
1004 | (when (or force | |
1005 | (not gnus-topic-active-alist)) | |
1006 | (let (groups) | |
1007 | ;; Get a list of all groups available. | |
1008 | (mapatoms (lambda (g) (when (symbol-value g) | |
1009 | (push (symbol-name g) groups))) | |
1010 | gnus-active-hashtb) | |
1011 | (setq groups (sort groups 'string<)) | |
1012 | ;; Init the variables. | |
1013 | (setq gnus-topic-active-topology (list (list "" 'visible))) | |
1014 | (setq gnus-topic-active-alist nil) | |
1015 | ;; Descend the top-level hierarchy. | |
1016 | (gnus-topic-grok-active-1 gnus-topic-active-topology groups) | |
1017 | ;; Set the top-level topic names to something nice. | |
1018 | (setcar (car gnus-topic-active-topology) "Gnus active") | |
1019 | (setcar (car gnus-topic-active-alist) "Gnus active")))) | |
1020 | ||
1021 | (defun gnus-topic-grok-active-1 (topology groups) | |
1022 | (let* ((name (caar topology)) | |
1023 | (prefix (concat "^" (regexp-quote name))) | |
1024 | tgroups ntopology group) | |
1025 | (while (and groups | |
1026 | (string-match prefix (setq group (car groups)))) | |
1027 | (if (not (string-match "\\." group (match-end 0))) | |
1028 | ;; There are no further hierarchies here, so we just | |
1029 | ;; enter this group into the list belonging to this | |
1030 | ;; topic. | |
1031 | (push (pop groups) tgroups) | |
1032 | ;; New sub-hierarchy, so we add it to the topology. | |
1033 | (nconc topology (list (setq ntopology | |
1034 | (list (list (substring | |
1035 | group 0 (match-end 0)) | |
1036 | 'invisible))))) | |
1037 | ;; Descend the hierarchy. | |
1038 | (setq groups (gnus-topic-grok-active-1 ntopology groups)))) | |
1039 | ;; We remove the trailing "." from the topic name. | |
1040 | (setq name | |
1041 | (if (string-match "\\.$" name) | |
1042 | (substring name 0 (match-beginning 0)) | |
1043 | name)) | |
1044 | ;; Add this topic and its groups to the topic alist. | |
1045 | (push (cons name (nreverse tgroups)) gnus-topic-active-alist) | |
1046 | (setcar (car topology) name) | |
1047 | ;; We return the rest of the groups that didn't belong | |
1048 | ;; to this topic. | |
1049 | groups)) | |
1050 | ||
1051 | ;;; Topic mode, commands and keymap. | |
1052 | ||
1053 | (defvar gnus-topic-mode-map nil) | |
1054 | (defvar gnus-group-topic-map nil) | |
1055 | ||
1056 | (unless gnus-topic-mode-map | |
1057 | (setq gnus-topic-mode-map (make-sparse-keymap)) | |
1058 | ||
1059 | ;; Override certain group mode keys. | |
1060 | (gnus-define-keys gnus-topic-mode-map | |
1061 | "=" gnus-topic-select-group | |
1062 | "\r" gnus-topic-select-group | |
1063 | " " gnus-topic-read-group | |
16409b0b | 1064 | "\C-c\C-x" gnus-topic-expire-articles |
23f87bed | 1065 | "c" gnus-topic-catchup-articles |
eec82323 LMI |
1066 | "\C-k" gnus-topic-kill-group |
1067 | "\C-y" gnus-topic-yank-group | |
1068 | "\M-g" gnus-topic-get-new-news-this-topic | |
1069 | "AT" gnus-topic-list-active | |
1070 | "Gp" gnus-topic-edit-parameters | |
1071 | "#" gnus-topic-mark-topic | |
1072 | "\M-#" gnus-topic-unmark-topic | |
6748645f LMI |
1073 | [tab] gnus-topic-indent |
1074 | [(meta tab)] gnus-topic-unindent | |
1075 | "\C-i" gnus-topic-indent | |
1076 | "\M-\C-i" gnus-topic-unindent | |
eec82323 LMI |
1077 | gnus-mouse-2 gnus-mouse-pick-topic) |
1078 | ||
1079 | ;; Define a new submap. | |
1080 | (gnus-define-keys (gnus-group-topic-map "T" gnus-group-mode-map) | |
1081 | "#" gnus-topic-mark-topic | |
1082 | "\M-#" gnus-topic-unmark-topic | |
1083 | "n" gnus-topic-create-topic | |
1084 | "m" gnus-topic-move-group | |
1085 | "D" gnus-topic-remove-group | |
1086 | "c" gnus-topic-copy-group | |
1087 | "h" gnus-topic-hide-topic | |
1088 | "s" gnus-topic-show-topic | |
16409b0b | 1089 | "j" gnus-topic-jump-to-topic |
eec82323 LMI |
1090 | "M" gnus-topic-move-matching |
1091 | "C" gnus-topic-copy-matching | |
23f87bed MB |
1092 | "\M-p" gnus-topic-goto-previous-topic |
1093 | "\M-n" gnus-topic-goto-next-topic | |
eec82323 LMI |
1094 | "\C-i" gnus-topic-indent |
1095 | [tab] gnus-topic-indent | |
1096 | "r" gnus-topic-rename | |
a8151ef7 LMI |
1097 | "\177" gnus-topic-delete |
1098 | [delete] gnus-topic-delete | |
6748645f | 1099 | "H" gnus-topic-toggle-display-empty-topics) |
eec82323 LMI |
1100 | |
1101 | (gnus-define-keys (gnus-topic-sort-map "S" gnus-group-topic-map) | |
1102 | "s" gnus-topic-sort-groups | |
1103 | "a" gnus-topic-sort-groups-by-alphabet | |
1104 | "u" gnus-topic-sort-groups-by-unread | |
1105 | "l" gnus-topic-sort-groups-by-level | |
23f87bed | 1106 | "e" gnus-topic-sort-groups-by-server |
eec82323 LMI |
1107 | "v" gnus-topic-sort-groups-by-score |
1108 | "r" gnus-topic-sort-groups-by-rank | |
1109 | "m" gnus-topic-sort-groups-by-method)) | |
1110 | ||
1111 | (defun gnus-topic-make-menu-bar () | |
1112 | (unless (boundp 'gnus-topic-menu) | |
1113 | (easy-menu-define | |
1114 | gnus-topic-menu gnus-topic-mode-map "" | |
1115 | '("Topics" | |
1116 | ["Toggle topics" gnus-topic-mode t] | |
1117 | ("Groups" | |
23f87bed MB |
1118 | ["Copy..." gnus-topic-copy-group t] |
1119 | ["Move..." gnus-topic-move-group t] | |
eec82323 | 1120 | ["Remove" gnus-topic-remove-group t] |
23f87bed MB |
1121 | ["Copy matching..." gnus-topic-copy-matching t] |
1122 | ["Move matching..." gnus-topic-move-matching t]) | |
eec82323 | 1123 | ("Topics" |
23f87bed | 1124 | ["Goto..." gnus-topic-jump-to-topic t] |
eec82323 LMI |
1125 | ["Show" gnus-topic-show-topic t] |
1126 | ["Hide" gnus-topic-hide-topic t] | |
1127 | ["Delete" gnus-topic-delete t] | |
23f87bed MB |
1128 | ["Rename..." gnus-topic-rename t] |
1129 | ["Create..." gnus-topic-create-topic t] | |
eec82323 | 1130 | ["Mark" gnus-topic-mark-topic t] |
a8151ef7 | 1131 | ["Indent" gnus-topic-indent t] |
16409b0b | 1132 | ["Sort" gnus-topic-sort-topics t] |
23f87bed MB |
1133 | ["Previous topic" gnus-topic-goto-previous-topic t] |
1134 | ["Next topic" gnus-topic-goto-next-topic t] | |
a8151ef7 LMI |
1135 | ["Toggle hide empty" gnus-topic-toggle-display-empty-topics t] |
1136 | ["Edit parameters" gnus-topic-edit-parameters t]) | |
eec82323 LMI |
1137 | ["List active" gnus-topic-list-active t])))) |
1138 | ||
1139 | (defun gnus-topic-mode (&optional arg redisplay) | |
1140 | "Minor mode for topicsifying Gnus group buffers." | |
bbf52f1e | 1141 | ;; FIXME: Use define-minor-mode. |
eec82323 LMI |
1142 | (interactive (list current-prefix-arg t)) |
1143 | (when (eq major-mode 'gnus-group-mode) | |
1144 | (make-local-variable 'gnus-topic-mode) | |
1145 | (setq gnus-topic-mode | |
1146 | (if (null arg) (not gnus-topic-mode) | |
1147 | (> (prefix-numeric-value arg) 0))) | |
1148 | ;; Infest Gnus with topics. | |
16409b0b | 1149 | (if (not gnus-topic-mode) |
23f87bed | 1150 | (setq gnus-goto-missing-group-function nil) |
eec82323 LMI |
1151 | (when (gnus-visual-p 'topic-menu 'menu) |
1152 | (gnus-topic-make-menu-bar)) | |
6748645f | 1153 | (gnus-set-format 'topic t) |
01c52d31 | 1154 | (add-minor-mode 'gnus-topic-mode " Topic" gnus-topic-mode-map) |
eec82323 LMI |
1155 | (add-hook 'gnus-group-catchup-group-hook 'gnus-topic-update-topic) |
1156 | (set (make-local-variable 'gnus-group-prepare-function) | |
1157 | 'gnus-group-prepare-topics) | |
1158 | (set (make-local-variable 'gnus-group-get-parameter-function) | |
1159 | 'gnus-group-topic-parameters) | |
1160 | (set (make-local-variable 'gnus-group-goto-next-group-function) | |
1161 | 'gnus-topic-goto-next-group) | |
1162 | (set (make-local-variable 'gnus-group-indentation-function) | |
1163 | 'gnus-topic-group-indentation) | |
1164 | (set (make-local-variable 'gnus-group-update-group-function) | |
1165 | 'gnus-topic-update-topics-containing-group) | |
1166 | (set (make-local-variable 'gnus-group-sort-alist-function) | |
1167 | 'gnus-group-sort-topic) | |
1168 | (setq gnus-group-change-level-function 'gnus-topic-change-level) | |
1169 | (setq gnus-goto-missing-group-function 'gnus-topic-goto-missing-group) | |
23f87bed MB |
1170 | (gnus-make-local-hook 'gnus-check-bogus-groups-hook) |
1171 | (add-hook 'gnus-check-bogus-groups-hook 'gnus-topic-clean-alist | |
1172 | nil 'local) | |
eec82323 LMI |
1173 | (setq gnus-topology-checked-p nil) |
1174 | ;; We check the topology. | |
1175 | (when gnus-newsrc-alist | |
1176 | (gnus-topic-check-topology)) | |
6748645f | 1177 | (gnus-run-hooks 'gnus-topic-mode-hook)) |
eec82323 LMI |
1178 | ;; Remove topic infestation. |
1179 | (unless gnus-topic-mode | |
1180 | (remove-hook 'gnus-summary-exit-hook 'gnus-topic-update-topic) | |
7cd26120 | 1181 | (setq gnus-group-change-level-function nil) |
eec82323 LMI |
1182 | (remove-hook 'gnus-check-bogus-groups-hook 'gnus-topic-clean-alist) |
1183 | (setq gnus-group-prepare-function 'gnus-group-prepare-flat) | |
1184 | (setq gnus-group-sort-alist-function 'gnus-group-sort-flat)) | |
1185 | (when redisplay | |
1186 | (gnus-group-list-groups)))) | |
1187 | ||
1188 | (defun gnus-topic-select-group (&optional all) | |
1189 | "Select this newsgroup. | |
1190 | No article is selected automatically. | |
23f87bed | 1191 | If the group is opened, just switch the summary buffer. |
eec82323 | 1192 | If ALL is non-nil, already read articles become readable. |
52bec650 MB |
1193 | |
1194 | If ALL is a positive number, fetch this number of the latest | |
1195 | articles in the group. If ALL is a negative number, fetch this | |
1196 | number of the earliest articles in the group. | |
eec82323 LMI |
1197 | |
1198 | If performed over a topic line, toggle folding the topic." | |
1199 | (interactive "P") | |
23f87bed MB |
1200 | (when (and (eobp) (not (gnus-group-group-name))) |
1201 | (forward-line -1)) | |
eec82323 LMI |
1202 | (if (gnus-group-topic-p) |
1203 | (let ((gnus-group-list-mode | |
1204 | (if all (cons (if (numberp all) all 7) t) gnus-group-list-mode))) | |
16409b0b GM |
1205 | (gnus-topic-fold all) |
1206 | (gnus-dribble-touch)) | |
eec82323 LMI |
1207 | (gnus-group-select-group all))) |
1208 | ||
1209 | (defun gnus-mouse-pick-topic (e) | |
1210 | "Select the group or topic under the mouse pointer." | |
1211 | (interactive "e") | |
1212 | (mouse-set-point e) | |
1213 | (gnus-topic-read-group nil)) | |
1214 | ||
16409b0b GM |
1215 | (defun gnus-topic-expire-articles (topic) |
1216 | "Expire articles in this topic or group." | |
1217 | (interactive (list (gnus-group-topic-name))) | |
1218 | (if (not topic) | |
1219 | (call-interactively 'gnus-group-expire-articles) | |
1220 | (save-excursion | |
1221 | (gnus-message 5 "Expiring groups in %s..." topic) | |
1222 | (let ((gnus-group-marked | |
1223 | (mapcar (lambda (entry) (car (nth 2 entry))) | |
23f87bed MB |
1224 | (gnus-topic-find-groups topic gnus-level-killed t |
1225 | nil t)))) | |
16409b0b GM |
1226 | (gnus-group-expire-articles nil)) |
1227 | (gnus-message 5 "Expiring groups in %s...done" topic)))) | |
1228 | ||
23f87bed MB |
1229 | (defun gnus-topic-catchup-articles (topic) |
1230 | "Catchup this topic or group. | |
1231 | Also see `gnus-group-catchup'." | |
1232 | (interactive (list (gnus-group-topic-name))) | |
1233 | (if (not topic) | |
1234 | (call-interactively 'gnus-group-catchup-current) | |
1235 | (save-excursion | |
1236 | (let* ((groups | |
1237 | (mapcar (lambda (entry) (car (nth 2 entry))) | |
1238 | (gnus-topic-find-groups topic gnus-level-killed t | |
1239 | nil t))) | |
1240 | (buffer-read-only nil) | |
1241 | (gnus-group-marked groups)) | |
1242 | (gnus-group-catchup-current) | |
1243 | (mapcar 'gnus-topic-update-topics-containing-group groups))))) | |
1244 | ||
eec82323 LMI |
1245 | (defun gnus-topic-read-group (&optional all no-article group) |
1246 | "Read news in this newsgroup. | |
1247 | If the prefix argument ALL is non-nil, already read articles become | |
52bec650 MB |
1248 | readable. |
1249 | ||
1250 | If ALL is a positive number, fetch this number of the latest | |
1251 | articles in the group. If ALL is a negative number, fetch this | |
1252 | number of the earliest articles in the group. | |
1253 | ||
1254 | If the optional argument NO-ARTICLE is non-nil, no article will | |
1255 | be auto-selected upon group entry. If GROUP is non-nil, fetch | |
1256 | that group. | |
eec82323 LMI |
1257 | |
1258 | If performed over a topic line, toggle folding the topic." | |
1259 | (interactive "P") | |
1260 | (if (gnus-group-topic-p) | |
1261 | (let ((gnus-group-list-mode | |
1262 | (if all (cons (if (numberp all) all 7) t) gnus-group-list-mode))) | |
1263 | (gnus-topic-fold all)) | |
1264 | (gnus-group-read-group all no-article group))) | |
1265 | ||
1266 | (defun gnus-topic-create-topic (topic parent &optional previous full-topic) | |
a8151ef7 LMI |
1267 | "Create a new TOPIC under PARENT. |
1268 | When used interactively, PARENT will be the topic under point." | |
eec82323 LMI |
1269 | (interactive |
1270 | (list | |
1271 | (read-string "New topic: ") | |
1272 | (gnus-current-topic))) | |
1273 | ;; Check whether this topic already exists. | |
1274 | (when (gnus-topic-find-topology topic) | |
1275 | (error "Topic already exists")) | |
1276 | (unless parent | |
1277 | (setq parent (caar gnus-topic-topology))) | |
1278 | (let ((top (cdr (gnus-topic-find-topology parent))) | |
84169620 | 1279 | (full-topic (or full-topic (list (list topic 'visible nil nil))))) |
eec82323 LMI |
1280 | (unless top |
1281 | (error "No such parent topic: %s" parent)) | |
1282 | (if previous | |
1283 | (progn | |
1284 | (while (and (cdr top) | |
1285 | (not (equal (caaadr top) previous))) | |
1286 | (setq top (cdr top))) | |
1287 | (setcdr top (cons full-topic (cdr top)))) | |
1288 | (nconc top (list full-topic))) | |
1289 | (unless (assoc topic gnus-topic-alist) | |
1290 | (push (list topic) gnus-topic-alist))) | |
1291 | (gnus-topic-enter-dribble) | |
1292 | (gnus-group-list-groups) | |
1293 | (gnus-topic-goto-topic topic)) | |
1294 | ||
a1506d29 JB |
1295 | ;; FIXME: |
1296 | ;; 1. When the marked groups are overlapped with the process | |
16409b0b | 1297 | ;; region, the behavior of move or remove is not right. |
a1506d29 | 1298 | ;; 2. Can't process on several marked groups with a same name, |
16409b0b GM |
1299 | ;; because gnus-group-marked only keeps one copy. |
1300 | ||
eec82323 LMI |
1301 | (defun gnus-topic-move-group (n topic &optional copyp) |
1302 | "Move the next N groups to TOPIC. | |
1303 | If COPYP, copy the groups instead." | |
1304 | (interactive | |
1305 | (list current-prefix-arg | |
23f87bed MB |
1306 | (gnus-completing-read "Move to topic" gnus-topic-alist nil t |
1307 | 'gnus-topic-history))) | |
a1506d29 | 1308 | (let ((use-marked (and (not n) (not (gnus-region-active-p)) |
16409b0b GM |
1309 | gnus-group-marked t)) |
1310 | (groups (gnus-group-process-prefix n)) | |
eec82323 | 1311 | (topicl (assoc topic gnus-topic-alist)) |
eec82323 | 1312 | (start-topic (gnus-group-topic-name)) |
16409b0b | 1313 | (start-group (progn (forward-line 1) (gnus-group-group-name))) |
eec82323 | 1314 | entry) |
16409b0b GM |
1315 | (if (and (not groups) (not copyp) start-topic) |
1316 | (gnus-topic-move start-topic topic) | |
01c52d31 MB |
1317 | (dolist (g groups) |
1318 | (gnus-group-remove-mark g use-marked) | |
1319 | (when (and | |
1320 | (setq entry (assoc (gnus-current-topic) gnus-topic-alist)) | |
1321 | (not copyp)) | |
1322 | (setcdr entry (gnus-delete-first g (cdr entry)))) | |
1323 | (nconc topicl (list g))) | |
16409b0b GM |
1324 | (gnus-topic-enter-dribble) |
1325 | (if start-group | |
1326 | (gnus-group-goto-group start-group) | |
1327 | (gnus-topic-goto-topic start-topic)) | |
1328 | (gnus-group-list-groups)))) | |
eec82323 | 1329 | |
16409b0b | 1330 | (defun gnus-topic-remove-group (&optional n) |
eec82323 LMI |
1331 | "Remove the current group from the topic." |
1332 | (interactive "P") | |
a1506d29 | 1333 | (let ((use-marked (and (not n) (not (gnus-region-active-p)) |
16409b0b GM |
1334 | gnus-group-marked t)) |
1335 | (groups (gnus-group-process-prefix n))) | |
01c52d31 | 1336 | (mapc |
16409b0b GM |
1337 | (lambda (group) |
1338 | (gnus-group-remove-mark group use-marked) | |
1339 | (let ((topicl (assoc (gnus-current-topic) gnus-topic-alist)) | |
1340 | (buffer-read-only nil)) | |
1341 | (when (and topicl group) | |
1342 | (gnus-delete-line) | |
1343 | (gnus-delete-first group topicl)) | |
1344 | (gnus-topic-update-topic))) | |
1345 | groups) | |
1346 | (gnus-topic-enter-dribble) | |
1347 | (gnus-group-position-point))) | |
eec82323 LMI |
1348 | |
1349 | (defun gnus-topic-copy-group (n topic) | |
1350 | "Copy the current group to a topic." | |
1351 | (interactive | |
1352 | (list current-prefix-arg | |
1353 | (completing-read "Copy to topic: " gnus-topic-alist nil t))) | |
1354 | (gnus-topic-move-group n topic t)) | |
1355 | ||
1356 | (defun gnus-topic-kill-group (&optional n discard) | |
1357 | "Kill the next N groups." | |
1358 | (interactive "P") | |
1359 | (if (gnus-group-topic-p) | |
1360 | (let ((topic (gnus-group-topic-name))) | |
1361 | (push (cons | |
1362 | (gnus-topic-find-topology topic) | |
1363 | (assoc topic gnus-topic-alist)) | |
1364 | gnus-topic-killed-topics) | |
1365 | (gnus-topic-remove-topic nil t) | |
1366 | (gnus-topic-find-topology topic nil nil gnus-topic-topology) | |
1367 | (gnus-topic-enter-dribble)) | |
1368 | (gnus-group-kill-group n discard) | |
16409b0b GM |
1369 | (if (not (gnus-group-topic-p)) |
1370 | (gnus-topic-update-topic) | |
1371 | ;; Move up one line so that we update the right topic. | |
1372 | (forward-line -1) | |
1373 | (gnus-topic-update-topic) | |
1374 | (forward-line 1)))) | |
eec82323 LMI |
1375 | |
1376 | (defun gnus-topic-yank-group (&optional arg) | |
1377 | "Yank the last topic." | |
1378 | (interactive "p") | |
1379 | (if gnus-topic-killed-topics | |
1380 | (let* ((previous | |
1381 | (or (gnus-group-topic-name) | |
1382 | (gnus-topic-next-topic (gnus-current-topic)))) | |
1383 | (data (pop gnus-topic-killed-topics)) | |
1384 | (alist (cdr data)) | |
1385 | (item (cdar data))) | |
1386 | (push alist gnus-topic-alist) | |
1387 | (gnus-topic-create-topic | |
1388 | (caar item) (gnus-topic-parent-topic previous) previous | |
1389 | item) | |
1390 | (gnus-topic-enter-dribble) | |
1391 | (gnus-topic-goto-topic (caar item))) | |
1392 | (let* ((prev (gnus-group-group-name)) | |
1393 | (gnus-topic-inhibit-change-level t) | |
1394 | (gnus-group-indentation | |
1395 | (make-string | |
1396 | (* gnus-topic-indent-level | |
1397 | (or (save-excursion | |
1398 | (gnus-topic-goto-topic (gnus-current-topic)) | |
1399 | (gnus-group-topic-level)) | |
1400 | 0)) | |
1401 | ? )) | |
1402 | yanked alist) | |
1403 | ;; We first yank the groups the normal way... | |
1404 | (setq yanked (gnus-group-yank-group arg)) | |
1405 | ;; Then we enter the yanked groups into the topics they belong | |
1406 | ;; to. | |
1407 | (setq alist (assoc (save-excursion | |
1408 | (forward-line -1) | |
1409 | (gnus-current-topic)) | |
1410 | gnus-topic-alist)) | |
1411 | (when (stringp yanked) | |
1412 | (setq yanked (list yanked))) | |
1413 | (if (not prev) | |
1414 | (nconc alist yanked) | |
1415 | (if (not (cdr alist)) | |
1416 | (setcdr alist (nconc yanked (cdr alist))) | |
1417 | (while (cdr alist) | |
1418 | (when (equal (cadr alist) prev) | |
1419 | (setcdr alist (nconc yanked (cdr alist))) | |
1420 | (setq alist nil)) | |
1421 | (setq alist (cdr alist)))))) | |
1422 | (gnus-topic-update-topic))) | |
1423 | ||
16409b0b GM |
1424 | (defun gnus-topic-hide-topic (&optional permanent) |
1425 | "Hide the current topic. | |
1426 | If PERMANENT, make it stay hidden in subsequent sessions as well." | |
1427 | (interactive "P") | |
eec82323 LMI |
1428 | (when (gnus-current-topic) |
1429 | (gnus-topic-goto-topic (gnus-current-topic)) | |
16409b0b | 1430 | (if permanent |
a1506d29 | 1431 | (setcar (cddr |
16409b0b GM |
1432 | (cadr |
1433 | (gnus-topic-find-topology (gnus-current-topic)))) | |
1434 | 'hidden)) | |
1435 | (gnus-topic-remove-topic nil nil))) | |
1436 | ||
1437 | (defun gnus-topic-show-topic (&optional permanent) | |
1438 | "Show the hidden topic. | |
1439 | If PERMANENT, make it stay shown in subsequent sessions as well." | |
1440 | (interactive "P") | |
eec82323 | 1441 | (when (gnus-group-topic-p) |
16409b0b GM |
1442 | (if (not permanent) |
1443 | (gnus-topic-remove-topic t nil) | |
a1506d29 JB |
1444 | (let ((topic |
1445 | (gnus-topic-find-topology | |
16409b0b GM |
1446 | (completing-read "Show topic: " gnus-topic-alist nil t)))) |
1447 | (setcar (cddr (cadr topic)) nil) | |
1448 | (setcar (cdr (cadr topic)) 'visible) | |
1449 | (gnus-group-list-groups))))) | |
eec82323 | 1450 | |
23f87bed | 1451 | (defun gnus-topic-mark-topic (topic &optional unmark non-recursive) |
8b93df01 | 1452 | "Mark all groups in the TOPIC with the process mark. |
23f87bed | 1453 | If NON-RECURSIVE (which is the prefix) is t, don't mark its subtopics." |
8b93df01 DL |
1454 | (interactive (list (gnus-group-topic-name) |
1455 | nil | |
1456 | (and current-prefix-arg t))) | |
eec82323 LMI |
1457 | (if (not topic) |
1458 | (call-interactively 'gnus-group-mark-group) | |
1459 | (save-excursion | |
a1506d29 | 1460 | (let ((groups (gnus-topic-find-groups topic gnus-level-killed t nil |
23f87bed | 1461 | (not non-recursive)))) |
eec82323 LMI |
1462 | (while groups |
1463 | (funcall (if unmark 'gnus-group-remove-mark 'gnus-group-set-mark) | |
1464 | (gnus-info-group (nth 2 (pop groups))))))))) | |
1465 | ||
23f87bed | 1466 | (defun gnus-topic-unmark-topic (topic &optional dummy non-recursive) |
8b93df01 | 1467 | "Remove the process mark from all groups in the TOPIC. |
23f87bed | 1468 | If NON-RECURSIVE (which is the prefix) is t, don't unmark its subtopics." |
8b93df01 DL |
1469 | (interactive (list (gnus-group-topic-name) |
1470 | nil | |
1471 | (and current-prefix-arg t))) | |
eec82323 LMI |
1472 | (if (not topic) |
1473 | (call-interactively 'gnus-group-unmark-group) | |
23f87bed | 1474 | (gnus-topic-mark-topic topic t non-recursive))) |
eec82323 LMI |
1475 | |
1476 | (defun gnus-topic-get-new-news-this-topic (&optional n) | |
1477 | "Check for new news in the current topic." | |
1478 | (interactive "P") | |
1479 | (if (not (gnus-group-topic-p)) | |
1480 | (gnus-group-get-new-news-this-group n) | |
23f87bed MB |
1481 | (let* ((topic (gnus-group-topic-name)) |
1482 | (data (cadr (gnus-topic-find-topology topic)))) | |
1483 | (save-excursion | |
1484 | (gnus-topic-mark-topic topic nil (and n t)) | |
1485 | (gnus-group-get-new-news-this-group)) | |
1486 | (gnus-topic-remove-topic (eq 'visible (cadr data)))))) | |
eec82323 LMI |
1487 | |
1488 | (defun gnus-topic-move-matching (regexp topic &optional copyp) | |
1489 | "Move all groups that match REGEXP to some topic." | |
1490 | (interactive | |
1491 | (let (topic) | |
1492 | (nreverse | |
1493 | (list | |
1494 | (setq topic (completing-read "Move to topic: " gnus-topic-alist nil t)) | |
1495 | (read-string (format "Move to %s (regexp): " topic)))))) | |
1496 | (gnus-group-mark-regexp regexp) | |
1497 | (gnus-topic-move-group nil topic copyp)) | |
1498 | ||
1499 | (defun gnus-topic-copy-matching (regexp topic &optional copyp) | |
1500 | "Copy all groups that match REGEXP to some topic." | |
1501 | (interactive | |
1502 | (let (topic) | |
1503 | (nreverse | |
1504 | (list | |
1505 | (setq topic (completing-read "Copy to topic: " gnus-topic-alist nil t)) | |
1506 | (read-string (format "Copy to %s (regexp): " topic)))))) | |
1507 | (gnus-topic-move-matching regexp topic t)) | |
1508 | ||
1509 | (defun gnus-topic-delete (topic) | |
1510 | "Delete a topic." | |
1511 | (interactive (list (gnus-group-topic-name))) | |
1512 | (unless topic | |
1513 | (error "No topic to be deleted")) | |
1514 | (let ((entry (assoc topic gnus-topic-alist)) | |
1515 | (buffer-read-only nil)) | |
1516 | (when (cdr entry) | |
1517 | (error "Topic not empty")) | |
1518 | ;; Delete if visible. | |
1519 | (when (gnus-topic-goto-topic topic) | |
1520 | (gnus-delete-line)) | |
1521 | ;; Remove from alist. | |
1522 | (setq gnus-topic-alist (delq entry gnus-topic-alist)) | |
1523 | ;; Remove from topology. | |
a8151ef7 LMI |
1524 | (gnus-topic-find-topology topic nil nil 'delete) |
1525 | (gnus-dribble-touch))) | |
eec82323 LMI |
1526 | |
1527 | (defun gnus-topic-rename (old-name new-name) | |
1528 | "Rename a topic." | |
1529 | (interactive | |
1530 | (let ((topic (gnus-current-topic))) | |
1531 | (list topic | |
23f87bed | 1532 | (read-string (format "Rename %s to: " topic) topic)))) |
6748645f LMI |
1533 | ;; Check whether the new name exists. |
1534 | (when (gnus-topic-find-topology new-name) | |
1535 | (error "Topic '%s' already exists" new-name)) | |
1536 | ;; "nil" is an invalid name, for reasons I'd rather not go | |
1537 | ;; into here. Trust me. | |
1538 | (when (equal new-name "nil") | |
1539 | (error "Invalid name: %s" nil)) | |
1540 | ;; Do the renaming. | |
eec82323 LMI |
1541 | (let ((top (gnus-topic-find-topology old-name)) |
1542 | (entry (assoc old-name gnus-topic-alist))) | |
1543 | (when top | |
1544 | (setcar (cadr top) new-name)) | |
1545 | (when entry | |
1546 | (setcar entry new-name)) | |
1547 | (forward-line -1) | |
1548 | (gnus-dribble-touch) | |
6748645f LMI |
1549 | (gnus-group-list-groups) |
1550 | (forward-line 1))) | |
eec82323 LMI |
1551 | |
1552 | (defun gnus-topic-indent (&optional unindent) | |
1553 | "Indent a topic -- make it a sub-topic of the previous topic. | |
1554 | If UNINDENT, remove an indentation." | |
1555 | (interactive "P") | |
1556 | (if unindent | |
1557 | (gnus-topic-unindent) | |
1558 | (let* ((topic (gnus-current-topic)) | |
1559 | (parent (gnus-topic-previous-topic topic)) | |
1560 | (buffer-read-only nil)) | |
1561 | (unless parent | |
1562 | (error "Nothing to indent %s into" topic)) | |
1563 | (when topic | |
1564 | (gnus-topic-goto-topic topic) | |
1565 | (gnus-topic-kill-group) | |
1566 | (push (cdar gnus-topic-killed-topics) gnus-topic-alist) | |
1567 | (gnus-topic-create-topic | |
d942a83d | 1568 | topic parent nil (cdar (car gnus-topic-killed-topics))) |
eec82323 LMI |
1569 | (pop gnus-topic-killed-topics) |
1570 | (or (gnus-topic-goto-topic topic) | |
1571 | (gnus-topic-goto-topic parent)))))) | |
1572 | ||
1573 | (defun gnus-topic-unindent () | |
1574 | "Unindent a topic." | |
1575 | (interactive) | |
1576 | (let* ((topic (gnus-current-topic)) | |
1577 | (parent (gnus-topic-parent-topic topic)) | |
1578 | (grandparent (gnus-topic-parent-topic parent))) | |
1579 | (unless grandparent | |
1580 | (error "Nothing to indent %s into" topic)) | |
1581 | (when topic | |
1582 | (gnus-topic-goto-topic topic) | |
1583 | (gnus-topic-kill-group) | |
1584 | (push (cdar gnus-topic-killed-topics) gnus-topic-alist) | |
1585 | (gnus-topic-create-topic | |
1586 | topic grandparent (gnus-topic-next-topic parent) | |
d942a83d | 1587 | (cdar (car gnus-topic-killed-topics))) |
eec82323 LMI |
1588 | (pop gnus-topic-killed-topics) |
1589 | (gnus-topic-goto-topic topic)))) | |
1590 | ||
1591 | (defun gnus-topic-list-active (&optional force) | |
1592 | "List all groups that Gnus knows about in a topicsified fashion. | |
1593 | If FORCE, always re-read the active file." | |
1594 | (interactive "P") | |
1595 | (when force | |
1596 | (gnus-get-killed-groups)) | |
1597 | (gnus-topic-grok-active force) | |
1598 | (let ((gnus-topic-topology gnus-topic-active-topology) | |
1599 | (gnus-topic-alist gnus-topic-active-alist) | |
1600 | gnus-killed-list gnus-zombie-list) | |
6748645f | 1601 | (gnus-group-list-groups gnus-level-killed nil 1))) |
eec82323 | 1602 | |
a8151ef7 LMI |
1603 | (defun gnus-topic-toggle-display-empty-topics () |
1604 | "Show/hide topics that have no unread articles." | |
1605 | (interactive) | |
1606 | (setq gnus-topic-display-empty-topics | |
1607 | (not gnus-topic-display-empty-topics)) | |
1608 | (gnus-group-list-groups) | |
1609 | (message "%s empty topics" | |
1610 | (if gnus-topic-display-empty-topics | |
1611 | "Showing" "Hiding"))) | |
1612 | ||
eec82323 LMI |
1613 | ;;; Topic sorting functions |
1614 | ||
1615 | (defun gnus-topic-edit-parameters (group) | |
1616 | "Edit the group parameters of GROUP. | |
1617 | If performed on a topic, edit the topic parameters instead." | |
1618 | (interactive (list (gnus-group-group-name))) | |
1619 | (if group | |
1620 | (gnus-group-edit-group-parameters group) | |
1621 | (if (not (gnus-group-topic-p)) | |
a8151ef7 | 1622 | (error "Nothing to edit on the current line") |
eec82323 LMI |
1623 | (let ((topic (gnus-group-topic-name))) |
1624 | (gnus-edit-form | |
1625 | (gnus-topic-parameters topic) | |
1626 | (format "Editing the topic parameters for `%s'." | |
1627 | (or group topic)) | |
1628 | `(lambda (form) | |
1629 | (gnus-topic-set-parameters ,topic form))))))) | |
1630 | ||
1631 | (defun gnus-group-sort-topic (func reverse) | |
1632 | "Sort groups in the topics according to FUNC and REVERSE." | |
1633 | (let ((alist gnus-topic-alist)) | |
1634 | (while alist | |
1635 | ;; !!!Sometimes nil elements sneak into the alist, | |
1636 | ;; for some reason or other. | |
1637 | (setcar alist (delq nil (car alist))) | |
1638 | (setcar alist (delete "dummy.group" (car alist))) | |
1639 | (gnus-topic-sort-topic (pop alist) func reverse)))) | |
1640 | ||
1641 | (defun gnus-topic-sort-topic (topic func reverse) | |
1642 | ;; Each topic only lists the name of the group, while | |
1643 | ;; the sort predicates expect group infos as inputs. | |
1644 | ;; So we first transform the group names into infos, | |
1645 | ;; then sort, and then transform back into group names. | |
1646 | (setcdr | |
1647 | topic | |
1648 | (mapcar | |
1649 | (lambda (info) (gnus-info-group info)) | |
1650 | (sort | |
1651 | (mapcar | |
1652 | (lambda (group) (gnus-get-info group)) | |
1653 | (cdr topic)) | |
1654 | func))) | |
1655 | ;; Do the reversal, if necessary. | |
1656 | (when reverse | |
1657 | (setcdr topic (nreverse (cdr topic))))) | |
1658 | ||
1659 | (defun gnus-topic-sort-groups (func &optional reverse) | |
1660 | "Sort the current topic according to FUNC. | |
1661 | If REVERSE, reverse the sorting order." | |
1662 | (interactive (list gnus-group-sort-function current-prefix-arg)) | |
1663 | (let ((topic (assoc (gnus-current-topic) gnus-topic-alist))) | |
1664 | (gnus-topic-sort-topic | |
1665 | topic (gnus-make-sort-function func) reverse) | |
1666 | (gnus-group-list-groups))) | |
1667 | ||
1668 | (defun gnus-topic-sort-groups-by-alphabet (&optional reverse) | |
1669 | "Sort the current topic alphabetically by group name. | |
1670 | If REVERSE, sort in reverse order." | |
1671 | (interactive "P") | |
1672 | (gnus-topic-sort-groups 'gnus-group-sort-by-alphabet reverse)) | |
1673 | ||
1674 | (defun gnus-topic-sort-groups-by-unread (&optional reverse) | |
1675 | "Sort the current topic by number of unread articles. | |
1676 | If REVERSE, sort in reverse order." | |
1677 | (interactive "P") | |
1678 | (gnus-topic-sort-groups 'gnus-group-sort-by-unread reverse)) | |
1679 | ||
1680 | (defun gnus-topic-sort-groups-by-level (&optional reverse) | |
1681 | "Sort the current topic by group level. | |
1682 | If REVERSE, sort in reverse order." | |
1683 | (interactive "P") | |
1684 | (gnus-topic-sort-groups 'gnus-group-sort-by-level reverse)) | |
1685 | ||
1686 | (defun gnus-topic-sort-groups-by-score (&optional reverse) | |
1687 | "Sort the current topic by group score. | |
1688 | If REVERSE, sort in reverse order." | |
1689 | (interactive "P") | |
1690 | (gnus-topic-sort-groups 'gnus-group-sort-by-score reverse)) | |
1691 | ||
1692 | (defun gnus-topic-sort-groups-by-rank (&optional reverse) | |
1693 | "Sort the current topic by group rank. | |
1694 | If REVERSE, sort in reverse order." | |
1695 | (interactive "P") | |
1696 | (gnus-topic-sort-groups 'gnus-group-sort-by-rank reverse)) | |
1697 | ||
1698 | (defun gnus-topic-sort-groups-by-method (&optional reverse) | |
1699 | "Sort the current topic alphabetically by backend name. | |
1700 | If REVERSE, sort in reverse order." | |
1701 | (interactive "P") | |
1702 | (gnus-topic-sort-groups 'gnus-group-sort-by-method reverse)) | |
1703 | ||
23f87bed MB |
1704 | (defun gnus-topic-sort-groups-by-server (&optional reverse) |
1705 | "Sort the current topic alphabetically by server name. | |
1706 | If REVERSE, sort in reverse order." | |
1707 | (interactive "P") | |
1708 | (gnus-topic-sort-groups 'gnus-group-sort-by-server reverse)) | |
1709 | ||
16409b0b GM |
1710 | (defun gnus-topic-sort-topics-1 (top reverse) |
1711 | (if (cdr top) | |
1712 | (let ((subtop | |
23f87bed MB |
1713 | (mapcar (gnus-byte-compile |
1714 | `(lambda (top) | |
1715 | (gnus-topic-sort-topics-1 top ,reverse))) | |
16409b0b | 1716 | (sort (cdr top) |
23f87bed MB |
1717 | (lambda (t1 t2) |
1718 | (string-lessp (caar t1) (caar t2))))))) | |
16409b0b GM |
1719 | (setcdr top (if reverse (reverse subtop) subtop)))) |
1720 | top) | |
1721 | ||
1722 | (defun gnus-topic-sort-topics (&optional topic reverse) | |
8f688cb0 | 1723 | "Sort topics in TOPIC alphabetically by topic name. |
16409b0b | 1724 | If REVERSE, reverse the sorting order." |
a1506d29 JB |
1725 | (interactive |
1726 | (list (completing-read "Sort topics in : " gnus-topic-alist nil t | |
16409b0b GM |
1727 | (gnus-current-topic)) |
1728 | current-prefix-arg)) | |
1729 | (let ((topic-topology (or (and topic (cdr (gnus-topic-find-topology topic))) | |
1730 | gnus-topic-topology))) | |
1731 | (gnus-topic-sort-topics-1 topic-topology reverse) | |
1732 | (gnus-topic-enter-dribble) | |
1733 | (gnus-group-list-groups) | |
1734 | (gnus-topic-goto-topic topic))) | |
1735 | ||
1736 | (defun gnus-topic-move (current to) | |
1737 | "Move the CURRENT topic to TO." | |
a1506d29 JB |
1738 | (interactive |
1739 | (list | |
16409b0b GM |
1740 | (gnus-group-topic-name) |
1741 | (completing-read "Move to topic: " gnus-topic-alist nil t))) | |
1742 | (unless (and current to) | |
1743 | (error "Can't find topic")) | |
1744 | (let ((current-top (cdr (gnus-topic-find-topology current))) | |
1745 | (to-top (cdr (gnus-topic-find-topology to)))) | |
1746 | (unless current-top | |
1747 | (error "Can't find topic `%s'" current)) | |
1748 | (unless to-top | |
1749 | (error "Can't find topic `%s'" to)) | |
1750 | (if (gnus-topic-find-topology to current-top 0);; Don't care the level | |
1751 | (error "Can't move `%s' to its sub-level" current)) | |
1752 | (gnus-topic-find-topology current nil nil 'delete) | |
01c52d31 | 1753 | (setcdr (last to-top) (list current-top)) |
16409b0b GM |
1754 | (gnus-topic-enter-dribble) |
1755 | (gnus-group-list-groups) | |
1756 | (gnus-topic-goto-topic current))) | |
1757 | ||
1758 | (defun gnus-subscribe-topics (newsgroup) | |
1759 | (catch 'end | |
1760 | (let (match gnus-group-change-level-function) | |
1761 | (dolist (topic (gnus-topic-list)) | |
1762 | (when (and (setq match (cdr (assq 'subscribe | |
1763 | (gnus-topic-parameters topic)))) | |
1764 | (string-match match newsgroup)) | |
1765 | ;; Just subscribe the group. | |
1766 | (gnus-subscribe-alphabetically newsgroup) | |
1767 | ;; Add the group to the topic. | |
1768 | (nconc (assoc topic gnus-topic-alist) (list newsgroup)) | |
23f87bed MB |
1769 | ;; if this topic specifies a default level, use it |
1770 | (let ((subscribe-level (cdr (assq 'subscribe-level | |
1771 | (gnus-topic-parameters topic))))) | |
1772 | (when subscribe-level | |
1773 | (gnus-group-change-level newsgroup subscribe-level | |
1774 | gnus-level-default-subscribed))) | |
1775 | (throw 'end t))) | |
1776 | nil))) | |
a1506d29 | 1777 | |
eec82323 LMI |
1778 | (provide 'gnus-topic) |
1779 | ||
1780 | ;;; gnus-topic.el ends here |