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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, |
e3fe4da0 | 4 | ;; 2004, 2005, 2006, 2007, 2008 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 | ||
12 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
13 | ;; it under the terms of the GNU General Public License as published by | |
5a9dffec | 14 | ;; the Free Software Foundation; either version 3, or (at your option) |
eec82323 LMI |
15 | ;; any later version. |
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 | |
23 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
3a35cf56 LK |
24 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
25 | ;; Boston, MA 02110-1301, USA. | |
eec82323 LMI |
26 | |
27 | ;;; Commentary: | |
28 | ||
29 | ;;; Code: | |
30 | ||
5ab7173c RS |
31 | (eval-when-compile (require 'cl)) |
32 | ||
eec82323 LMI |
33 | (require 'gnus) |
34 | (require 'gnus-group) | |
35 | (require 'gnus-start) | |
6748645f | 36 | (require 'gnus-util) |
eec82323 LMI |
37 | |
38 | (defgroup gnus-topic nil | |
39 | "Group topics." | |
40 | :group 'gnus-group) | |
41 | ||
42 | (defvar gnus-topic-mode nil | |
43 | "Minor mode for Gnus group buffers.") | |
44 | ||
45 | (defcustom gnus-topic-mode-hook nil | |
46 | "Hook run in topic mode buffers." | |
47 | :type 'hook | |
48 | :group 'gnus-topic) | |
49 | ||
23f87bed MB |
50 | (when (featurep 'xemacs) |
51 | (add-hook 'gnus-topic-mode-hook 'gnus-xmas-topic-menu-add)) | |
52 | ||
eec82323 LMI |
53 | (defcustom gnus-topic-line-format "%i[ %(%{%n%}%) -- %A ]%v\n" |
54 | "Format of topic lines. | |
55 | It works along the same lines as a normal formatting string, | |
56 | with some simple extensions. | |
57 | ||
58 | %i Indentation based on topic level. | |
59 | %n Topic name. | |
60 | %v Nothing if the topic is visible, \"...\" otherwise. | |
61 | %g Number of groups in the topic. | |
62 | %a Number of unread articles in the groups in the topic. | |
63 | %A Number of unread articles in the groups in the topic and its subtopics. | |
23f87bed MB |
64 | |
65 | General format specifiers can also be used. | |
66 | See Info node `(gnus)Formatting Variables'." | |
67 | :link '(custom-manual "(gnus)Formatting Variables") | |
eec82323 LMI |
68 | :type 'string |
69 | :group 'gnus-topic) | |
70 | ||
71 | (defcustom gnus-topic-indent-level 2 | |
72 | "*How much each subtopic should be indented." | |
73 | :type 'integer | |
74 | :group 'gnus-topic) | |
75 | ||
76 | (defcustom gnus-topic-display-empty-topics t | |
77 | "*If non-nil, display the topic lines even of topics that have no unread articles." | |
78 | :type 'boolean | |
79 | :group 'gnus-topic) | |
80 | ||
81 | ;; Internal variables. | |
82 | ||
83 | (defvar gnus-topic-active-topology nil) | |
84 | (defvar gnus-topic-active-alist nil) | |
6748645f | 85 | (defvar gnus-topic-unreads nil) |
eec82323 LMI |
86 | |
87 | (defvar gnus-topology-checked-p nil | |
88 | "Whether the topology has been checked in this session.") | |
89 | ||
90 | (defvar gnus-topic-killed-topics nil) | |
91 | (defvar gnus-topic-inhibit-change-level nil) | |
eec82323 LMI |
92 | |
93 | (defconst gnus-topic-line-format-alist | |
94 | `((?n name ?s) | |
95 | (?v visible ?s) | |
96 | (?i indentation ?s) | |
97 | (?g number-of-groups ?d) | |
98 | (?a (gnus-topic-articles-in-topic entries) ?d) | |
99 | (?A total-number-of-articles ?d) | |
100 | (?l level ?d))) | |
101 | ||
102 | (defvar gnus-topic-line-format-spec nil) | |
103 | ||
104 | ;;; Utility functions | |
105 | ||
106 | (defun gnus-group-topic-name () | |
107 | "The name of the topic on the current line." | |
01c52d31 | 108 | (let ((topic (get-text-property (point-at-bol) 'gnus-topic))) |
eec82323 LMI |
109 | (and topic (symbol-name topic)))) |
110 | ||
111 | (defun gnus-group-topic-level () | |
112 | "The level of the topic on the current line." | |
01c52d31 | 113 | (get-text-property (point-at-bol) 'gnus-topic-level)) |
eec82323 LMI |
114 | |
115 | (defun gnus-group-topic-unread () | |
116 | "The number of unread articles in topic on the current line." | |
01c52d31 | 117 | (get-text-property (point-at-bol) 'gnus-topic-unread)) |
eec82323 LMI |
118 | |
119 | (defun gnus-topic-unread (topic) | |
120 | "Return the number of unread articles in TOPIC." | |
6748645f | 121 | (or (cdr (assoc topic gnus-topic-unreads)) |
eec82323 LMI |
122 | 0)) |
123 | ||
124 | (defun gnus-group-topic-p () | |
125 | "Return non-nil if the current line is a topic." | |
126 | (gnus-group-topic-name)) | |
127 | ||
128 | (defun gnus-topic-visible-p () | |
129 | "Return non-nil if the current topic is visible." | |
01c52d31 | 130 | (get-text-property (point-at-bol) 'gnus-topic-visible)) |
eec82323 LMI |
131 | |
132 | (defun gnus-topic-articles-in-topic (entries) | |
133 | (let ((total 0) | |
134 | number) | |
135 | (while entries | |
136 | (when (numberp (setq number (car (pop entries)))) | |
137 | (incf total number))) | |
138 | total)) | |
139 | ||
140 | (defun gnus-group-topic (group) | |
141 | "Return the topic GROUP is a member of." | |
142 | (let ((alist gnus-topic-alist) | |
143 | out) | |
144 | (while alist | |
145 | (when (member group (cdar alist)) | |
146 | (setq out (caar alist) | |
147 | alist nil)) | |
148 | (setq alist (cdr alist))) | |
149 | out)) | |
150 | ||
151 | (defun gnus-group-parent-topic (group) | |
152 | "Return the topic GROUP is member of by looking at the group buffer." | |
153 | (save-excursion | |
154 | (set-buffer gnus-group-buffer) | |
155 | (if (gnus-group-goto-group group) | |
156 | (gnus-current-topic) | |
157 | (gnus-group-topic group)))) | |
158 | ||
159 | (defun gnus-topic-goto-topic (topic) | |
eec82323 LMI |
160 | (when topic |
161 | (gnus-goto-char (text-property-any (point-min) (point-max) | |
162 | 'gnus-topic (intern topic))))) | |
163 | ||
16409b0b GM |
164 | (defun gnus-topic-jump-to-topic (topic) |
165 | "Go to TOPIC." | |
166 | (interactive | |
167 | (list (completing-read "Go to topic: " | |
168 | (mapcar 'list (gnus-topic-list)) | |
169 | nil t))) | |
01c52d31 MB |
170 | (let ((buffer-read-only nil)) |
171 | (dolist (topic (gnus-current-topics topic)) | |
172 | (unless (gnus-topic-goto-topic topic) | |
173 | (gnus-topic-goto-missing-topic topic) | |
174 | (gnus-topic-display-missing-topic topic)))) | |
16409b0b | 175 | (gnus-topic-goto-topic topic)) |
a1506d29 | 176 | |
eec82323 LMI |
177 | (defun gnus-current-topic () |
178 | "Return the name of the current topic." | |
179 | (let ((result | |
180 | (or (get-text-property (point) 'gnus-topic) | |
181 | (save-excursion | |
182 | (and (gnus-goto-char (previous-single-property-change | |
183 | (point) 'gnus-topic)) | |
184 | (get-text-property (max (1- (point)) (point-min)) | |
185 | 'gnus-topic)))))) | |
186 | (when result | |
187 | (symbol-name result)))) | |
188 | ||
6748645f LMI |
189 | (defun gnus-current-topics (&optional topic) |
190 | "Return a list of all current topics, lowest in hierarchy first. | |
191 | If TOPIC, start with that topic." | |
192 | (let ((topic (or topic (gnus-current-topic))) | |
eec82323 LMI |
193 | topics) |
194 | (while topic | |
195 | (push topic topics) | |
196 | (setq topic (gnus-topic-parent-topic topic))) | |
197 | (nreverse topics))) | |
198 | ||
199 | (defun gnus-group-active-topic-p () | |
200 | "Say whether the current topic comes from the active topics." | |
01c52d31 | 201 | (get-text-property (point-at-bol) 'gnus-active)) |
eec82323 | 202 | |
8b93df01 DL |
203 | (defun gnus-topic-find-groups (topic &optional level all lowest recursive) |
204 | "Return entries for all visible groups in TOPIC. | |
205 | If RECURSIVE is t, return groups in its subtopics too." | |
eec82323 | 206 | (let ((groups (cdr (assoc topic gnus-topic-alist))) |
23f87bed | 207 | info clevel unread group params visible-groups entry active) |
eec82323 | 208 | (setq lowest (or lowest 1)) |
6748645f | 209 | (setq level (or level gnus-level-unsubscribed)) |
eec82323 LMI |
210 | ;; We go through the newsrc to look for matches. |
211 | (while groups | |
212 | (when (setq group (pop groups)) | |
01c52d31 | 213 | (setq entry (gnus-group-entry group) |
eec82323 LMI |
214 | info (nth 2 entry) |
215 | params (gnus-info-params info) | |
216 | active (gnus-active group) | |
217 | unread (or (car entry) | |
218 | (and (not (equal group "dummy.group")) | |
219 | active | |
220 | (- (1+ (cdr active)) (car active)))) | |
221 | clevel (or (gnus-info-level info) | |
6748645f LMI |
222 | (if (member group gnus-zombie-list) |
223 | gnus-level-zombie gnus-level-killed)))) | |
eec82323 | 224 | (and |
16409b0b | 225 | info ; nil means that the group is dead. |
eec82323 LMI |
226 | (<= clevel level) |
227 | (>= clevel lowest) ; Is inside the level we want. | |
228 | (or all | |
16409b0b GM |
229 | (if (or (eq unread t) |
230 | (eq unread nil)) | |
eec82323 LMI |
231 | gnus-group-list-inactive-groups |
232 | (> unread 0)) | |
233 | (and gnus-list-groups-with-ticked-articles | |
234 | (cdr (assq 'tick (gnus-info-marks info)))) | |
16409b0b | 235 | ;; Has right readedness. |
eec82323 LMI |
236 | ;; Check for permanent visibility. |
237 | (and gnus-permanently-visible-groups | |
238 | (string-match gnus-permanently-visible-groups group)) | |
239 | (memq 'visible params) | |
240 | (cdr (assq 'visible params))) | |
241 | ;; Add this group to the list of visible groups. | |
242 | (push (or entry group) visible-groups))) | |
8b93df01 | 243 | (setq visible-groups (nreverse visible-groups)) |
a1506d29 | 244 | (when recursive |
8b93df01 DL |
245 | (if (eq recursive t) |
246 | (setq recursive (cdr (gnus-topic-find-topology topic)))) | |
01c52d31 MB |
247 | (dolist (topic-topology (cdr recursive)) |
248 | (setq visible-groups | |
249 | (nconc visible-groups | |
250 | (gnus-topic-find-groups | |
251 | (caar topic-topology) | |
252 | level all lowest topic-topology))))) | |
8b93df01 | 253 | visible-groups)) |
eec82323 | 254 | |
23f87bed MB |
255 | (defun gnus-topic-goto-previous-topic (n) |
256 | "Go to the N'th previous topic." | |
257 | (interactive "p") | |
258 | (gnus-topic-goto-next-topic (- n))) | |
259 | ||
260 | (defun gnus-topic-goto-next-topic (n) | |
261 | "Go to the N'th next topic." | |
262 | (interactive "p") | |
263 | (let ((backward (< n 0)) | |
264 | (n (abs n)) | |
265 | (topic (gnus-current-topic))) | |
266 | (while (and (> n 0) | |
267 | (setq topic | |
268 | (if backward | |
269 | (gnus-topic-previous-topic topic) | |
270 | (gnus-topic-next-topic topic)))) | |
271 | (gnus-topic-goto-topic topic) | |
272 | (setq n (1- n))) | |
273 | (when (/= 0 n) | |
274 | (gnus-message 7 "No more topics")) | |
275 | n)) | |
276 | ||
eec82323 LMI |
277 | (defun gnus-topic-previous-topic (topic) |
278 | "Return the previous topic on the same level as TOPIC." | |
279 | (let ((top (cddr (gnus-topic-find-topology | |
280 | (gnus-topic-parent-topic topic))))) | |
281 | (unless (equal topic (caaar top)) | |
282 | (while (and top (not (equal (caaadr top) topic))) | |
283 | (setq top (cdr top))) | |
284 | (caaar top)))) | |
285 | ||
286 | (defun gnus-topic-parent-topic (topic &optional topology) | |
287 | "Return the parent of TOPIC." | |
288 | (unless topology | |
289 | (setq topology gnus-topic-topology)) | |
290 | (let ((parent (car (pop topology))) | |
291 | result found) | |
292 | (while (and topology | |
293 | (not (setq found (equal (caaar topology) topic))) | |
294 | (not (setq result (gnus-topic-parent-topic | |
295 | topic (car topology))))) | |
296 | (setq topology (cdr topology))) | |
297 | (or result (and found parent)))) | |
298 | ||
299 | (defun gnus-topic-next-topic (topic &optional previous) | |
300 | "Return the next sibling of TOPIC." | |
301 | (let ((parentt (cddr (gnus-topic-find-topology | |
302 | (gnus-topic-parent-topic topic)))) | |
303 | prev) | |
304 | (while (and parentt | |
305 | (not (equal (caaar parentt) topic))) | |
306 | (setq prev (caaar parentt) | |
307 | parentt (cdr parentt))) | |
308 | (if previous | |
309 | prev | |
310 | (caaadr parentt)))) | |
311 | ||
312 | (defun gnus-topic-forward-topic (num) | |
313 | "Go to the next topic on the same level as the current one." | |
314 | (let* ((topic (gnus-current-topic)) | |
315 | (way (if (< num 0) 'gnus-topic-previous-topic | |
316 | 'gnus-topic-next-topic)) | |
317 | (num (abs num))) | |
318 | (while (and (not (zerop num)) | |
319 | (setq topic (funcall way topic))) | |
320 | (when (gnus-topic-goto-topic topic) | |
321 | (decf num))) | |
322 | (unless (zerop num) | |
323 | (goto-char (point-max))) | |
324 | num)) | |
325 | ||
326 | (defun gnus-topic-find-topology (topic &optional topology level remove) | |
327 | "Return the topology of TOPIC." | |
328 | (unless topology | |
329 | (setq topology gnus-topic-topology) | |
330 | (setq level 0)) | |
331 | (let ((top topology) | |
332 | result) | |
333 | (if (equal (caar topology) topic) | |
334 | (progn | |
335 | (when remove | |
336 | (delq topology remove)) | |
337 | (cons level topology)) | |
338 | (setq topology (cdr topology)) | |
339 | (while (and topology | |
340 | (not (setq result (gnus-topic-find-topology | |
341 | topic (car topology) (1+ level) | |
342 | (and remove top))))) | |
343 | (setq topology (cdr topology))) | |
344 | result))) | |
345 | ||
346 | (defvar gnus-tmp-topics nil) | |
347 | (defun gnus-topic-list (&optional topology) | |
348 | "Return a list of all topics in the topology." | |
349 | (unless topology | |
350 | (setq topology gnus-topic-topology | |
351 | gnus-tmp-topics nil)) | |
352 | (push (caar topology) gnus-tmp-topics) | |
01c52d31 | 353 | (mapc 'gnus-topic-list (cdr topology)) |
eec82323 LMI |
354 | gnus-tmp-topics) |
355 | ||
356 | ;;; Topic parameter jazz | |
357 | ||
358 | (defun gnus-topic-parameters (topic) | |
359 | "Return the parameters for TOPIC." | |
360 | (let ((top (gnus-topic-find-topology topic))) | |
361 | (when top | |
362 | (nth 3 (cadr top))))) | |
363 | ||
364 | (defun gnus-topic-set-parameters (topic parameters) | |
365 | "Set the topic parameters of TOPIC to PARAMETERS." | |
366 | (let ((top (gnus-topic-find-topology topic))) | |
367 | (unless top | |
368 | (error "No such topic: %s" topic)) | |
369 | ;; We may have to extend if there is no parameters here | |
370 | ;; to begin with. | |
371 | (unless (nthcdr 2 (cadr top)) | |
372 | (nconc (cadr top) (list nil))) | |
373 | (unless (nthcdr 3 (cadr top)) | |
374 | (nconc (cadr top) (list nil))) | |
375 | (setcar (nthcdr 3 (cadr top)) parameters) | |
376 | (gnus-dribble-enter | |
377 | (format "(gnus-topic-set-parameters %S '%S)" topic parameters)))) | |
378 | ||
379 | (defun gnus-group-topic-parameters (group) | |
01c52d31 MB |
380 | "Compute the group parameters for GROUP in topic mode. |
381 | Possibly inherit parameters from topics above GROUP." | |
6748645f | 382 | (let ((params-list (copy-sequence (gnus-group-get-parameter group)))) |
eec82323 | 383 | (save-excursion |
01c52d31 MB |
384 | (gnus-topic-hierarchical-parameters |
385 | ;; First we try to go to the group within the group buffer and find the | |
386 | ;; topic for the group that way. This hopefully copes well with groups | |
387 | ;; that are in more than one topic. Failing that (i.e. when the group | |
388 | ;; isn't visible in the group buffer) we find a topic for the group via | |
389 | ;; gnus-group-topic. | |
390 | (or (and (gnus-group-goto-group group) | |
391 | (gnus-current-topic)) | |
392 | (gnus-group-topic group)) | |
393 | params-list)))) | |
394 | ||
395 | (defun gnus-topic-hierarchical-parameters (topic &optional group-params-list) | |
396 | "Compute the topic parameters for TOPIC. | |
397 | Possibly inherit parameters from topics above TOPIC. | |
398 | If optional argument GROUP-PARAMS-LIST is non-nil, use it as the basis for | |
399 | inheritance." | |
400 | (let ((params-list | |
401 | ;; We probably have lots of nil elements here, so we remove them. | |
402 | ;; Probably faster than doing this "properly". | |
403 | (delq nil (cons group-params-list | |
404 | (mapcar 'gnus-topic-parameters | |
405 | (gnus-current-topics topic))))) | |
406 | param out params) | |
6748645f LMI |
407 | ;; Now we have all the parameters, so we go through them |
408 | ;; and do inheritance in the obvious way. | |
01c52d31 MB |
409 | (let (posting-style) |
410 | (while (setq params (pop params-list)) | |
411 | (while (setq param (pop params)) | |
412 | (when (atom param) | |
413 | (setq param (cons param t))) | |
414 | (cond ((eq (car param) 'posting-style) | |
415 | (let ((param (cdr param)) | |
416 | elt) | |
417 | (while (setq elt (pop param)) | |
418 | (unless (assoc (car elt) posting-style) | |
419 | (push elt posting-style))))) | |
420 | (t | |
421 | (unless (assq (car param) out) | |
422 | (push param out)))))) | |
423 | (and posting-style (push (cons 'posting-style posting-style) out))) | |
6748645f LMI |
424 | ;; Return the resulting parameter list. |
425 | out)) | |
eec82323 LMI |
426 | |
427 | ;;; General utility functions | |
428 | ||
429 | (defun gnus-topic-enter-dribble () | |
430 | (gnus-dribble-enter | |
431 | (format "(setq gnus-topic-topology '%S)" gnus-topic-topology))) | |
432 | ||
433 | ;;; Generating group buffers | |
434 | ||
23f87bed | 435 | (defun gnus-group-prepare-topics (level &optional predicate lowest |
16409b0b | 436 | regexp list-topic topic-level) |
6748645f LMI |
437 | "List all newsgroups with unread articles of level LEVEL or lower. |
438 | Use the `gnus-group-topics' to sort the groups. | |
23f87bed MB |
439 | If PREDICTE is a function, list groups that the function returns non-nil; |
440 | if it is t, list groups that have no unread articles. | |
eec82323 LMI |
441 | If LOWEST is non-nil, list all newsgroups of level LOWEST or higher." |
442 | (set-buffer gnus-group-buffer) | |
443 | (let ((buffer-read-only nil) | |
23f87bed MB |
444 | (lowest (or lowest 1)) |
445 | (not-in-list | |
446 | (and gnus-group-listed-groups | |
447 | (copy-sequence gnus-group-listed-groups)))) | |
eec82323 | 448 | |
23f87bed | 449 | (gnus-update-format-specifications nil 'topic) |
e84b4b86 | 450 | |
eec82323 LMI |
451 | (when (or (not gnus-topic-alist) |
452 | (not gnus-topology-checked-p)) | |
453 | (gnus-topic-check-topology)) | |
454 | ||
455 | (unless list-topic | |
456 | (erase-buffer)) | |
457 | ||
458 | ;; List dead groups? | |
23f87bed MB |
459 | (when (or gnus-group-listed-groups |
460 | (and (>= level gnus-level-zombie) | |
461 | (<= lowest gnus-level-zombie))) | |
eec82323 LMI |
462 | (gnus-group-prepare-flat-list-dead |
463 | (setq gnus-zombie-list (sort gnus-zombie-list 'string<)) | |
464 | gnus-level-zombie ?Z | |
465 | regexp)) | |
466 | ||
23f87bed MB |
467 | (when (or gnus-group-listed-groups |
468 | (and (>= level gnus-level-killed) | |
469 | (<= lowest gnus-level-killed))) | |
eec82323 LMI |
470 | (gnus-group-prepare-flat-list-dead |
471 | (setq gnus-killed-list (sort gnus-killed-list 'string<)) | |
23f87bed MB |
472 | gnus-level-killed ?K regexp) |
473 | (when not-in-list | |
474 | (unless gnus-killed-hashtb | |
475 | (gnus-make-hashtable-from-killed)) | |
476 | (gnus-group-prepare-flat-list-dead | |
477 | (gnus-remove-if (lambda (group) | |
01c52d31 | 478 | (or (gnus-group-entry group) |
23f87bed MB |
479 | (gnus-gethash group gnus-killed-hashtb))) |
480 | not-in-list) | |
481 | gnus-level-killed ?K regexp))) | |
eec82323 LMI |
482 | |
483 | ;; Use topics. | |
484 | (prog1 | |
23f87bed MB |
485 | (when (or (< lowest gnus-level-zombie) |
486 | gnus-group-listed-groups) | |
eec82323 LMI |
487 | (if list-topic |
488 | (let ((top (gnus-topic-find-topology list-topic))) | |
489 | (gnus-topic-prepare-topic (cdr top) (car top) | |
23f87bed MB |
490 | (or topic-level level) predicate |
491 | nil lowest regexp)) | |
eec82323 | 492 | (gnus-topic-prepare-topic gnus-topic-topology 0 |
23f87bed MB |
493 | (or topic-level level) predicate |
494 | nil lowest regexp))) | |
eec82323 | 495 | (gnus-group-set-mode-line) |
23f87bed | 496 | (setq gnus-group-list-mode (cons level predicate)) |
6748645f | 497 | (gnus-run-hooks 'gnus-group-prepare-hook)))) |
eec82323 | 498 | |
23f87bed MB |
499 | (defun gnus-topic-prepare-topic (topicl level &optional list-level |
500 | predicate silent | |
501 | lowest regexp) | |
eec82323 LMI |
502 | "Insert TOPIC into the group buffer. |
503 | If SILENT, don't insert anything. Return the number of unread | |
504 | articles in the topic and its subtopics." | |
505 | (let* ((type (pop topicl)) | |
6748645f | 506 | (entries (gnus-topic-find-groups |
23f87bed MB |
507 | (car type) |
508 | (if gnus-group-listed-groups | |
509 | gnus-level-killed | |
510 | list-level) | |
511 | (or predicate gnus-group-listed-groups | |
16409b0b | 512 | (cdr (assq 'visible |
6748645f LMI |
513 | (gnus-topic-hierarchical-parameters |
514 | (car type))))) | |
23f87bed | 515 | (if gnus-group-listed-groups 0 lowest))) |
eec82323 LMI |
516 | (visiblep (and (eq (nth 1 type) 'visible) (not silent))) |
517 | (gnus-group-indentation | |
518 | (make-string (* gnus-topic-indent-level level) ? )) | |
519 | (beg (progn (beginning-of-line) (point))) | |
520 | (topicl (reverse topicl)) | |
521 | (all-entries entries) | |
522 | (point-max (point-max)) | |
523 | (unread 0) | |
524 | (topic (car type)) | |
525 | info entry end active tick) | |
526 | ;; Insert any sub-topics. | |
527 | (while topicl | |
528 | (incf unread | |
529 | (gnus-topic-prepare-topic | |
23f87bed MB |
530 | (pop topicl) (1+ level) list-level predicate |
531 | (not visiblep) lowest regexp))) | |
eec82323 LMI |
532 | (setq end (point)) |
533 | (goto-char beg) | |
534 | ;; Insert all the groups that belong in this topic. | |
535 | (while (setq entry (pop entries)) | |
23f87bed MB |
536 | (when (if (stringp entry) |
537 | (gnus-group-prepare-logic | |
538 | entry | |
539 | (and | |
540 | (or (not gnus-group-listed-groups) | |
541 | (if (< list-level gnus-level-zombie) nil | |
542 | (let ((entry-level | |
543 | (if (member entry gnus-zombie-list) | |
544 | gnus-level-zombie gnus-level-killed))) | |
545 | (and (<= entry-level list-level) | |
546 | (>= entry-level lowest))))) | |
547 | (cond | |
548 | ((stringp regexp) | |
549 | (string-match regexp entry)) | |
550 | ((functionp regexp) | |
551 | (funcall regexp entry)) | |
552 | ((null regexp) t) | |
553 | (t nil)))) | |
554 | (setq info (nth 2 entry)) | |
555 | (gnus-group-prepare-logic | |
556 | (gnus-info-group info) | |
557 | (and (or (not gnus-group-listed-groups) | |
558 | (let ((entry-level (gnus-info-level info))) | |
559 | (and (<= entry-level list-level) | |
560 | (>= entry-level lowest)))) | |
561 | (or (not (functionp predicate)) | |
562 | (funcall predicate info)) | |
563 | (or (not (stringp regexp)) | |
564 | (string-match regexp (gnus-info-group info)))))) | |
565 | (when visiblep | |
566 | (if (stringp entry) | |
567 | ;; Dead groups. | |
568 | (gnus-group-insert-group-line | |
569 | entry (if (member entry gnus-zombie-list) | |
570 | gnus-level-zombie gnus-level-killed) | |
571 | nil (- (1+ (cdr (setq active (gnus-active entry)))) | |
572 | (car active)) | |
573 | nil) | |
574 | ;; Living groups. | |
575 | (when (setq info (nth 2 entry)) | |
576 | (gnus-group-insert-group-line | |
577 | (gnus-info-group info) | |
578 | (gnus-info-level info) (gnus-info-marks info) | |
579 | (car entry) (gnus-info-method info))))) | |
580 | (when (and (listp entry) | |
581 | (numberp (car entry))) | |
582 | (incf unread (car entry))) | |
583 | (when (listp entry) | |
584 | (setq tick t)))) | |
eec82323 LMI |
585 | (goto-char beg) |
586 | ;; Insert the topic line. | |
587 | (when (and (not silent) | |
588 | (or gnus-topic-display-empty-topics ;We want empty topics | |
589 | (not (zerop unread)) ;Non-empty | |
590 | tick ;Ticked articles | |
591 | (/= point-max (point-max)))) ;Unactivated groups | |
592 | (gnus-extent-start-open (point)) | |
593 | (gnus-topic-insert-topic-line | |
594 | (car type) visiblep | |
595 | (not (eq (nth 2 type) 'hidden)) | |
596 | level all-entries unread)) | |
6748645f | 597 | (gnus-topic-update-unreads (car type) unread) |
85fd8002 RS |
598 | (when gnus-group-update-tool-bar |
599 | (gnus-put-text-property beg end 'point-entered | |
600 | 'gnus-tool-bar-update) | |
601 | (gnus-put-text-property beg end 'point-left | |
602 | 'gnus-tool-bar-update)) | |
eec82323 LMI |
603 | (goto-char end) |
604 | unread)) | |
605 | ||
606 | (defun gnus-topic-remove-topic (&optional insert total-remove hide in-level) | |
607 | "Remove the current topic." | |
608 | (let ((topic (gnus-group-topic-name)) | |
609 | (level (gnus-group-topic-level)) | |
610 | (beg (progn (beginning-of-line) (point))) | |
611 | buffer-read-only) | |
612 | (when topic | |
613 | (while (and (zerop (forward-line 1)) | |
614 | (> (or (gnus-group-topic-level) (1+ level)) level))) | |
615 | (delete-region beg (point)) | |
616 | ;; Do the change in this rather odd manner because it has been | |
617 | ;; reported that some topics share parts of some lists, for some | |
618 | ;; reason. I have been unable to determine why this is the | |
619 | ;; case, but this hack seems to take care of things. | |
620 | (let ((data (cadr (gnus-topic-find-topology topic)))) | |
621 | (setcdr data | |
622 | (list (if insert 'visible 'invisible) | |
16409b0b | 623 | (caddr data) |
eec82323 LMI |
624 | (cadddr data)))) |
625 | (if total-remove | |
626 | (setq gnus-topic-alist | |
627 | (delq (assoc topic gnus-topic-alist) gnus-topic-alist)) | |
628 | (gnus-topic-insert-topic topic in-level))))) | |
629 | ||
630 | (defun gnus-topic-insert-topic (topic &optional level) | |
631 | "Insert TOPIC." | |
632 | (gnus-group-prepare-topics | |
633 | (car gnus-group-list-mode) (cdr gnus-group-list-mode) | |
634 | nil nil topic level)) | |
635 | ||
16409b0b | 636 | (defun gnus-topic-fold (&optional insert topic) |
eec82323 | 637 | "Remove/insert the current topic." |
16409b0b | 638 | (let ((topic (or topic (gnus-group-topic-name)))) |
eec82323 LMI |
639 | (when topic |
640 | (save-excursion | |
641 | (if (not (gnus-group-active-topic-p)) | |
642 | (gnus-topic-remove-topic | |
643 | (or insert (not (gnus-topic-visible-p)))) | |
644 | (let ((gnus-topic-topology gnus-topic-active-topology) | |
645 | (gnus-topic-alist gnus-topic-active-alist) | |
646 | (gnus-group-list-mode (cons 5 t))) | |
647 | (gnus-topic-remove-topic | |
648 | (or insert (not (gnus-topic-visible-p))) nil nil 9) | |
649 | (gnus-topic-enter-dribble))))))) | |
650 | ||
651 | (defun gnus-topic-insert-topic-line (name visiblep shownp level entries | |
652 | &optional unread) | |
653 | (let* ((visible (if visiblep "" "...")) | |
654 | (indentation (make-string (* gnus-topic-indent-level level) ? )) | |
655 | (total-number-of-articles unread) | |
656 | (number-of-groups (length entries)) | |
6748645f LMI |
657 | (active-topic (eq gnus-topic-alist gnus-topic-active-alist)) |
658 | gnus-tmp-header) | |
659 | (gnus-topic-update-unreads name unread) | |
eec82323 LMI |
660 | (beginning-of-line) |
661 | ;; Insert the text. | |
16409b0b GM |
662 | (if shownp |
663 | (gnus-add-text-properties | |
664 | (point) | |
665 | (prog1 (1+ (point)) | |
666 | (eval gnus-topic-line-format-spec)) | |
667 | (list 'gnus-topic (intern name) | |
668 | 'gnus-topic-level level | |
669 | 'gnus-topic-unread unread | |
670 | 'gnus-active active-topic | |
671 | 'gnus-topic-visible visiblep))))) | |
eec82323 | 672 | |
6748645f LMI |
673 | (defun gnus-topic-update-unreads (topic unreads) |
674 | (setq gnus-topic-unreads (delq (assoc topic gnus-topic-unreads) | |
675 | gnus-topic-unreads)) | |
676 | (push (cons topic unreads) gnus-topic-unreads)) | |
677 | ||
eec82323 LMI |
678 | (defun gnus-topic-update-topics-containing-group (group) |
679 | "Update all topics that have GROUP as a member." | |
680 | (when (and (eq major-mode 'gnus-group-mode) | |
681 | gnus-topic-mode) | |
682 | (save-excursion | |
683 | (let ((alist gnus-topic-alist)) | |
684 | ;; This is probably not entirely correct. If a topic | |
685 | ;; isn't shown, then it's not updated. But the updating | |
686 | ;; should be performed in any case, since the topic's | |
687 | ;; parent should be updated. Pfft. | |
688 | (while alist | |
689 | (when (and (member group (cdar alist)) | |
690 | (gnus-topic-goto-topic (caar alist))) | |
691 | (gnus-topic-update-topic-line (caar alist))) | |
692 | (pop alist)))))) | |
693 | ||
694 | (defun gnus-topic-update-topic () | |
695 | "Update all parent topics to the current group." | |
696 | (when (and (eq major-mode 'gnus-group-mode) | |
697 | gnus-topic-mode) | |
698 | (let ((group (gnus-group-group-name)) | |
23f87bed | 699 | (m (point-marker)) |
eec82323 LMI |
700 | (buffer-read-only nil)) |
701 | (when (and group | |
702 | (gnus-get-info group) | |
703 | (gnus-topic-goto-topic (gnus-current-topic))) | |
704 | (gnus-topic-update-topic-line (gnus-group-topic-name)) | |
a8151ef7 LMI |
705 | (goto-char m) |
706 | (set-marker m nil) | |
eec82323 LMI |
707 | (gnus-group-position-point))))) |
708 | ||
709 | (defun gnus-topic-goto-missing-group (group) | |
710 | "Place point where GROUP is supposed to be inserted." | |
711 | (let* ((topic (gnus-group-topic group)) | |
712 | (groups (cdr (assoc topic gnus-topic-alist))) | |
713 | (g (cdr (member group groups))) | |
16409b0b GM |
714 | (unfound t) |
715 | entry) | |
eec82323 | 716 | ;; Try to jump to a visible group. |
23f87bed MB |
717 | (while (and g |
718 | (not (gnus-group-goto-group (car g) t))) | |
eec82323 LMI |
719 | (pop g)) |
720 | ;; It wasn't visible, so we try to see where to insert it. | |
721 | (when (not g) | |
722 | (setq g (cdr (member group (reverse groups)))) | |
723 | (while (and g unfound) | |
724 | (when (gnus-group-goto-group (pop g) t) | |
725 | (forward-line 1) | |
726 | (setq unfound nil))) | |
727 | (when (and unfound | |
728 | topic | |
729 | (not (gnus-topic-goto-missing-topic topic))) | |
23f87bed MB |
730 | (gnus-topic-display-missing-topic topic))))) |
731 | ||
732 | (defun gnus-topic-display-missing-topic (topic) | |
733 | "Insert topic lines recursively for missing topics." | |
734 | (let ((parent (gnus-topic-find-topology | |
735 | (gnus-topic-parent-topic topic)))) | |
736 | (when (and parent | |
737 | (not (gnus-topic-goto-missing-topic (caadr parent)))) | |
738 | (gnus-topic-display-missing-topic (caadr parent)))) | |
739 | (gnus-topic-goto-missing-topic topic) | |
01c52d31 MB |
740 | ;; Skip past all groups in the topic we're in. |
741 | (while (gnus-group-group-name) | |
742 | (forward-line 1)) | |
23f87bed MB |
743 | (let* ((top (gnus-topic-find-topology topic)) |
744 | (children (cddr top)) | |
745 | (type (cadr top)) | |
746 | (unread 0) | |
747 | (entries (gnus-topic-find-groups | |
748 | (car type) (car gnus-group-list-mode) | |
749 | (cdr gnus-group-list-mode))) | |
750 | entry) | |
751 | (while children | |
752 | (incf unread (gnus-topic-unread (caar (pop children))))) | |
753 | (while (setq entry (pop entries)) | |
754 | (when (numberp (car entry)) | |
755 | (incf unread (car entry)))) | |
756 | (gnus-topic-insert-topic-line | |
757 | topic t t (car (gnus-topic-find-topology topic)) nil unread))) | |
eec82323 LMI |
758 | |
759 | (defun gnus-topic-goto-missing-topic (topic) | |
760 | (if (gnus-topic-goto-topic topic) | |
761 | (forward-line 1) | |
762 | ;; Topic not displayed. | |
763 | (let* ((top (gnus-topic-find-topology | |
764 | (gnus-topic-parent-topic topic))) | |
765 | (tp (reverse (cddr top)))) | |
16409b0b GM |
766 | (if (not top) |
767 | (gnus-topic-insert-topic-line | |
768 | topic t t (car (gnus-topic-find-topology topic)) nil 0) | |
769 | (while (not (equal (caaar tp) topic)) | |
770 | (setq tp (cdr tp))) | |
771 | (pop tp) | |
772 | (while (and tp | |
773 | (not (gnus-topic-goto-topic (caaar tp)))) | |
774 | (pop tp)) | |
775 | (if tp | |
776 | (gnus-topic-forward-topic 1) | |
777 | (gnus-topic-goto-missing-topic (caadr top))))) | |
eec82323 LMI |
778 | nil)) |
779 | ||
780 | (defun gnus-topic-update-topic-line (topic-name &optional reads) | |
781 | (let* ((top (gnus-topic-find-topology topic-name)) | |
782 | (type (cadr top)) | |
783 | (children (cddr top)) | |
784 | (entries (gnus-topic-find-groups | |
785 | (car type) (car gnus-group-list-mode) | |
786 | (cdr gnus-group-list-mode))) | |
787 | (parent (gnus-topic-parent-topic topic-name)) | |
788 | (all-entries entries) | |
789 | (unread 0) | |
6748645f | 790 | old-unread entry new-unread) |
eec82323 LMI |
791 | (when (gnus-topic-goto-topic (car type)) |
792 | ;; Tally all the groups that belong in this topic. | |
793 | (if reads | |
794 | (setq unread (- (gnus-group-topic-unread) reads)) | |
795 | (while children | |
796 | (incf unread (gnus-topic-unread (caar (pop children))))) | |
797 | (while (setq entry (pop entries)) | |
798 | (when (numberp (car entry)) | |
799 | (incf unread (car entry))))) | |
800 | (setq old-unread (gnus-group-topic-unread)) | |
801 | ;; Insert the topic line. | |
802 | (gnus-topic-insert-topic-line | |
803 | (car type) (gnus-topic-visible-p) | |
804 | (not (eq (nth 2 type) 'hidden)) | |
805 | (gnus-group-topic-level) all-entries unread) | |
6748645f LMI |
806 | (gnus-delete-line) |
807 | (forward-line -1) | |
808 | (setq new-unread (gnus-group-topic-unread))) | |
eec82323 LMI |
809 | (when parent |
810 | (forward-line -1) | |
811 | (gnus-topic-update-topic-line | |
6748645f LMI |
812 | parent |
813 | (- (or old-unread 0) (or new-unread 0)))) | |
eec82323 LMI |
814 | unread)) |
815 | ||
816 | (defun gnus-topic-group-indentation () | |
817 | (make-string | |
818 | (* gnus-topic-indent-level | |
819 | (or (save-excursion | |
820 | (forward-line -1) | |
821 | (gnus-topic-goto-topic (gnus-current-topic)) | |
822 | (gnus-group-topic-level)) | |
823 | 0)) | |
824 | ? )) | |
825 | ||
826 | ;;; Initialization | |
827 | ||
828 | (gnus-add-shutdown 'gnus-topic-close 'gnus) | |
829 | ||
830 | (defun gnus-topic-close () | |
831 | (setq gnus-topic-active-topology nil | |
832 | gnus-topic-active-alist nil | |
833 | gnus-topic-killed-topics nil | |
eec82323 LMI |
834 | gnus-topology-checked-p nil)) |
835 | ||
836 | (defun gnus-topic-check-topology () | |
837 | ;; The first time we set the topology to whatever we have | |
838 | ;; gotten here, which can be rather random. | |
839 | (unless gnus-topic-alist | |
840 | (gnus-topic-init-alist)) | |
841 | ||
842 | (setq gnus-topology-checked-p t) | |
843 | ;; Go through the topic alist and make sure that all topics | |
844 | ;; are in the topic topology. | |
845 | (let ((topics (gnus-topic-list)) | |
846 | (alist gnus-topic-alist) | |
847 | changed) | |
848 | (while alist | |
849 | (unless (member (caar alist) topics) | |
850 | (nconc gnus-topic-topology | |
851 | (list (list (list (caar alist) 'visible)))) | |
852 | (setq changed t)) | |
853 | (setq alist (cdr alist))) | |
854 | (when changed | |
855 | (gnus-topic-enter-dribble)) | |
856 | ;; Conversely, go through the topology and make sure that all | |
857 | ;; topologies have alists. | |
858 | (while topics | |
859 | (unless (assoc (car topics) gnus-topic-alist) | |
860 | (push (list (car topics)) gnus-topic-alist)) | |
861 | (pop topics))) | |
862 | ;; Go through all living groups and make sure that | |
863 | ;; they belong to some topic. | |
01c52d31 | 864 | (let* ((tgroups (apply 'append (mapcar 'cdr gnus-topic-alist))) |
a8151ef7 | 865 | (entry (last (assoc (caar gnus-topic-topology) gnus-topic-alist))) |
eec82323 LMI |
866 | (newsrc (cdr gnus-newsrc-alist)) |
867 | group) | |
868 | (while newsrc | |
869 | (unless (member (setq group (gnus-info-group (pop newsrc))) tgroups) | |
a8151ef7 LMI |
870 | (setcdr entry (list group)) |
871 | (setq entry (cdr entry))))) | |
eec82323 LMI |
872 | ;; Go through all topics and make sure they contain only living groups. |
873 | (let ((alist gnus-topic-alist) | |
874 | topic) | |
875 | (while (setq topic (pop alist)) | |
876 | (while (cdr topic) | |
a8151ef7 | 877 | (if (and (cadr topic) |
01c52d31 | 878 | (gnus-group-entry (cadr topic))) |
eec82323 LMI |
879 | (setq topic (cdr topic)) |
880 | (setcdr topic (cddr topic))))))) | |
881 | ||
882 | (defun gnus-topic-init-alist () | |
883 | "Initialize the topic structures." | |
884 | (setq gnus-topic-topology | |
885 | (cons (list "Gnus" 'visible) | |
886 | (mapcar (lambda (topic) | |
887 | (list (list (car topic) 'visible))) | |
888 | '(("misc"))))) | |
889 | (setq gnus-topic-alist | |
890 | (list (cons "misc" | |
891 | (mapcar (lambda (info) (gnus-info-group info)) | |
892 | (cdr gnus-newsrc-alist))) | |
893 | (list "Gnus"))) | |
894 | (gnus-topic-enter-dribble)) | |
895 | ||
896 | ;;; Maintenance | |
897 | ||
898 | (defun gnus-topic-clean-alist () | |
899 | "Remove bogus groups from the topic alist." | |
900 | (let ((topic-alist gnus-topic-alist) | |
901 | result topic) | |
902 | (unless gnus-killed-hashtb | |
903 | (gnus-make-hashtable-from-killed)) | |
904 | (while (setq topic (pop topic-alist)) | |
905 | (let ((topic-name (pop topic)) | |
906 | group filtered-topic) | |
907 | (while (setq group (pop topic)) | |
01c52d31 | 908 | (when (and (or (gnus-active group) |
eec82323 LMI |
909 | (gnus-info-method (gnus-get-info group))) |
910 | (not (gnus-gethash group gnus-killed-hashtb))) | |
911 | (push group filtered-topic))) | |
912 | (push (cons topic-name (nreverse filtered-topic)) result))) | |
913 | (setq gnus-topic-alist (nreverse result)))) | |
914 | ||
a8151ef7 | 915 | (defun gnus-topic-change-level (group level oldlevel &optional previous) |
eec82323 LMI |
916 | "Run when changing levels to enter/remove groups from topics." |
917 | (save-excursion | |
918 | (set-buffer gnus-group-buffer) | |
6748645f LMI |
919 | (let ((buffer-read-only nil)) |
920 | (unless gnus-topic-inhibit-change-level | |
921 | (gnus-group-goto-group (or (car (nth 2 previous)) group)) | |
922 | (when (and gnus-topic-mode | |
923 | gnus-topic-alist | |
924 | (not gnus-topic-inhibit-change-level)) | |
925 | ;; Remove the group from the topics. | |
926 | (if (and (< oldlevel gnus-level-zombie) | |
927 | (>= level gnus-level-zombie)) | |
928 | (let ((alist gnus-topic-alist)) | |
929 | (while (gnus-group-goto-group group) | |
930 | (gnus-delete-line)) | |
931 | (while alist | |
932 | (when (member group (car alist)) | |
933 | (setcdr (car alist) (delete group (cdar alist)))) | |
934 | (pop alist))) | |
935 | ;; If the group is subscribed we enter it into the topics. | |
936 | (when (and (< level gnus-level-zombie) | |
937 | (>= oldlevel gnus-level-zombie)) | |
938 | (let* ((prev (gnus-group-group-name)) | |
939 | (gnus-topic-inhibit-change-level t) | |
940 | (gnus-group-indentation | |
941 | (make-string | |
942 | (* gnus-topic-indent-level | |
943 | (or (save-excursion | |
944 | (gnus-topic-goto-topic (gnus-current-topic)) | |
945 | (gnus-group-topic-level)) | |
946 | 0)) | |
947 | ? )) | |
948 | (yanked (list group)) | |
949 | alist talist end) | |
23f87bed MB |
950 | ;; Then we enter the yanked groups into the topics |
951 | ;; they belong to. | |
6748645f LMI |
952 | (when (setq alist (assoc (save-excursion |
953 | (forward-line -1) | |
954 | (or | |
955 | (gnus-current-topic) | |
956 | (caar gnus-topic-topology))) | |
957 | gnus-topic-alist)) | |
958 | (setq talist alist) | |
959 | (when (stringp yanked) | |
960 | (setq yanked (list yanked))) | |
961 | (if (not prev) | |
962 | (nconc alist yanked) | |
963 | (if (not (cdr alist)) | |
964 | (setcdr alist (nconc yanked (cdr alist))) | |
965 | (while (and (not end) (cdr alist)) | |
966 | (when (equal (cadr alist) prev) | |
967 | (setcdr alist (nconc yanked (cdr alist))) | |
968 | (setq end t)) | |
969 | (setq alist (cdr alist))) | |
970 | (unless end | |
971 | (nconc talist yanked)))))) | |
972 | (gnus-topic-update-topic)))))))) | |
eec82323 LMI |
973 | |
974 | (defun gnus-topic-goto-next-group (group props) | |
975 | "Go to group or the next group after group." | |
976 | (if (not group) | |
977 | (if (not (memq 'gnus-topic props)) | |
978 | (goto-char (point-max)) | |
979 | (gnus-topic-goto-topic (symbol-name (cadr (memq 'gnus-topic props))))) | |
980 | (if (gnus-group-goto-group group) | |
981 | t | |
982 | ;; The group is no longer visible. | |
983 | (let* ((list (assoc (gnus-group-topic group) gnus-topic-alist)) | |
984 | (after (cdr (member group (cdr list))))) | |
985 | ;; First try to put point on a group after the current one. | |
986 | (while (and after | |
987 | (not (gnus-group-goto-group (car after)))) | |
988 | (setq after (cdr after))) | |
989 | ;; Then try to put point on a group before point. | |
990 | (unless after | |
991 | (setq after (cdr (member group (reverse (cdr list))))) | |
992 | (while (and after | |
993 | (not (gnus-group-goto-group (car after)))) | |
994 | (setq after (cdr after)))) | |
995 | ;; Finally, just put point on the topic. | |
996 | (if (not (car list)) | |
997 | (goto-char (point-min)) | |
998 | (unless after | |
999 | (gnus-topic-goto-topic (car list)) | |
1000 | (setq after nil))) | |
1001 | t)))) | |
1002 | ||
1003 | ;;; Topic-active functions | |
1004 | ||
1005 | (defun gnus-topic-grok-active (&optional force) | |
1006 | "Parse all active groups and create topic structures for them." | |
1007 | ;; First we make sure that we have really read the active file. | |
1008 | (when (or force | |
1009 | (not gnus-topic-active-alist)) | |
1010 | (let (groups) | |
1011 | ;; Get a list of all groups available. | |
1012 | (mapatoms (lambda (g) (when (symbol-value g) | |
1013 | (push (symbol-name g) groups))) | |
1014 | gnus-active-hashtb) | |
1015 | (setq groups (sort groups 'string<)) | |
1016 | ;; Init the variables. | |
1017 | (setq gnus-topic-active-topology (list (list "" 'visible))) | |
1018 | (setq gnus-topic-active-alist nil) | |
1019 | ;; Descend the top-level hierarchy. | |
1020 | (gnus-topic-grok-active-1 gnus-topic-active-topology groups) | |
1021 | ;; Set the top-level topic names to something nice. | |
1022 | (setcar (car gnus-topic-active-topology) "Gnus active") | |
1023 | (setcar (car gnus-topic-active-alist) "Gnus active")))) | |
1024 | ||
1025 | (defun gnus-topic-grok-active-1 (topology groups) | |
1026 | (let* ((name (caar topology)) | |
1027 | (prefix (concat "^" (regexp-quote name))) | |
1028 | tgroups ntopology group) | |
1029 | (while (and groups | |
1030 | (string-match prefix (setq group (car groups)))) | |
1031 | (if (not (string-match "\\." group (match-end 0))) | |
1032 | ;; There are no further hierarchies here, so we just | |
1033 | ;; enter this group into the list belonging to this | |
1034 | ;; topic. | |
1035 | (push (pop groups) tgroups) | |
1036 | ;; New sub-hierarchy, so we add it to the topology. | |
1037 | (nconc topology (list (setq ntopology | |
1038 | (list (list (substring | |
1039 | group 0 (match-end 0)) | |
1040 | 'invisible))))) | |
1041 | ;; Descend the hierarchy. | |
1042 | (setq groups (gnus-topic-grok-active-1 ntopology groups)))) | |
1043 | ;; We remove the trailing "." from the topic name. | |
1044 | (setq name | |
1045 | (if (string-match "\\.$" name) | |
1046 | (substring name 0 (match-beginning 0)) | |
1047 | name)) | |
1048 | ;; Add this topic and its groups to the topic alist. | |
1049 | (push (cons name (nreverse tgroups)) gnus-topic-active-alist) | |
1050 | (setcar (car topology) name) | |
1051 | ;; We return the rest of the groups that didn't belong | |
1052 | ;; to this topic. | |
1053 | groups)) | |
1054 | ||
1055 | ;;; Topic mode, commands and keymap. | |
1056 | ||
1057 | (defvar gnus-topic-mode-map nil) | |
1058 | (defvar gnus-group-topic-map nil) | |
1059 | ||
1060 | (unless gnus-topic-mode-map | |
1061 | (setq gnus-topic-mode-map (make-sparse-keymap)) | |
1062 | ||
1063 | ;; Override certain group mode keys. | |
1064 | (gnus-define-keys gnus-topic-mode-map | |
1065 | "=" gnus-topic-select-group | |
1066 | "\r" gnus-topic-select-group | |
1067 | " " gnus-topic-read-group | |
16409b0b | 1068 | "\C-c\C-x" gnus-topic-expire-articles |
23f87bed | 1069 | "c" gnus-topic-catchup-articles |
eec82323 LMI |
1070 | "\C-k" gnus-topic-kill-group |
1071 | "\C-y" gnus-topic-yank-group | |
1072 | "\M-g" gnus-topic-get-new-news-this-topic | |
1073 | "AT" gnus-topic-list-active | |
1074 | "Gp" gnus-topic-edit-parameters | |
1075 | "#" gnus-topic-mark-topic | |
1076 | "\M-#" gnus-topic-unmark-topic | |
6748645f LMI |
1077 | [tab] gnus-topic-indent |
1078 | [(meta tab)] gnus-topic-unindent | |
1079 | "\C-i" gnus-topic-indent | |
1080 | "\M-\C-i" gnus-topic-unindent | |
eec82323 LMI |
1081 | gnus-mouse-2 gnus-mouse-pick-topic) |
1082 | ||
1083 | ;; Define a new submap. | |
1084 | (gnus-define-keys (gnus-group-topic-map "T" gnus-group-mode-map) | |
1085 | "#" gnus-topic-mark-topic | |
1086 | "\M-#" gnus-topic-unmark-topic | |
1087 | "n" gnus-topic-create-topic | |
1088 | "m" gnus-topic-move-group | |
1089 | "D" gnus-topic-remove-group | |
1090 | "c" gnus-topic-copy-group | |
1091 | "h" gnus-topic-hide-topic | |
1092 | "s" gnus-topic-show-topic | |
16409b0b | 1093 | "j" gnus-topic-jump-to-topic |
eec82323 LMI |
1094 | "M" gnus-topic-move-matching |
1095 | "C" gnus-topic-copy-matching | |
23f87bed MB |
1096 | "\M-p" gnus-topic-goto-previous-topic |
1097 | "\M-n" gnus-topic-goto-next-topic | |
eec82323 LMI |
1098 | "\C-i" gnus-topic-indent |
1099 | [tab] gnus-topic-indent | |
1100 | "r" gnus-topic-rename | |
a8151ef7 LMI |
1101 | "\177" gnus-topic-delete |
1102 | [delete] gnus-topic-delete | |
6748645f | 1103 | "H" gnus-topic-toggle-display-empty-topics) |
eec82323 LMI |
1104 | |
1105 | (gnus-define-keys (gnus-topic-sort-map "S" gnus-group-topic-map) | |
1106 | "s" gnus-topic-sort-groups | |
1107 | "a" gnus-topic-sort-groups-by-alphabet | |
1108 | "u" gnus-topic-sort-groups-by-unread | |
1109 | "l" gnus-topic-sort-groups-by-level | |
23f87bed | 1110 | "e" gnus-topic-sort-groups-by-server |
eec82323 LMI |
1111 | "v" gnus-topic-sort-groups-by-score |
1112 | "r" gnus-topic-sort-groups-by-rank | |
1113 | "m" gnus-topic-sort-groups-by-method)) | |
1114 | ||
1115 | (defun gnus-topic-make-menu-bar () | |
1116 | (unless (boundp 'gnus-topic-menu) | |
1117 | (easy-menu-define | |
1118 | gnus-topic-menu gnus-topic-mode-map "" | |
1119 | '("Topics" | |
1120 | ["Toggle topics" gnus-topic-mode t] | |
1121 | ("Groups" | |
23f87bed MB |
1122 | ["Copy..." gnus-topic-copy-group t] |
1123 | ["Move..." gnus-topic-move-group t] | |
eec82323 | 1124 | ["Remove" gnus-topic-remove-group t] |
23f87bed MB |
1125 | ["Copy matching..." gnus-topic-copy-matching t] |
1126 | ["Move matching..." gnus-topic-move-matching t]) | |
eec82323 | 1127 | ("Topics" |
23f87bed | 1128 | ["Goto..." gnus-topic-jump-to-topic t] |
eec82323 LMI |
1129 | ["Show" gnus-topic-show-topic t] |
1130 | ["Hide" gnus-topic-hide-topic t] | |
1131 | ["Delete" gnus-topic-delete t] | |
23f87bed MB |
1132 | ["Rename..." gnus-topic-rename t] |
1133 | ["Create..." gnus-topic-create-topic t] | |
eec82323 | 1134 | ["Mark" gnus-topic-mark-topic t] |
a8151ef7 | 1135 | ["Indent" gnus-topic-indent t] |
16409b0b | 1136 | ["Sort" gnus-topic-sort-topics t] |
23f87bed MB |
1137 | ["Previous topic" gnus-topic-goto-previous-topic t] |
1138 | ["Next topic" gnus-topic-goto-next-topic t] | |
a8151ef7 LMI |
1139 | ["Toggle hide empty" gnus-topic-toggle-display-empty-topics t] |
1140 | ["Edit parameters" gnus-topic-edit-parameters t]) | |
eec82323 LMI |
1141 | ["List active" gnus-topic-list-active t])))) |
1142 | ||
1143 | (defun gnus-topic-mode (&optional arg redisplay) | |
1144 | "Minor mode for topicsifying Gnus group buffers." | |
1145 | (interactive (list current-prefix-arg t)) | |
1146 | (when (eq major-mode 'gnus-group-mode) | |
1147 | (make-local-variable 'gnus-topic-mode) | |
1148 | (setq gnus-topic-mode | |
1149 | (if (null arg) (not gnus-topic-mode) | |
1150 | (> (prefix-numeric-value arg) 0))) | |
1151 | ;; Infest Gnus with topics. | |
16409b0b | 1152 | (if (not gnus-topic-mode) |
23f87bed | 1153 | (setq gnus-goto-missing-group-function nil) |
eec82323 LMI |
1154 | (when (gnus-visual-p 'topic-menu 'menu) |
1155 | (gnus-topic-make-menu-bar)) | |
6748645f | 1156 | (gnus-set-format 'topic t) |
01c52d31 | 1157 | (add-minor-mode 'gnus-topic-mode " Topic" gnus-topic-mode-map) |
eec82323 LMI |
1158 | (add-hook 'gnus-group-catchup-group-hook 'gnus-topic-update-topic) |
1159 | (set (make-local-variable 'gnus-group-prepare-function) | |
1160 | 'gnus-group-prepare-topics) | |
1161 | (set (make-local-variable 'gnus-group-get-parameter-function) | |
1162 | 'gnus-group-topic-parameters) | |
1163 | (set (make-local-variable 'gnus-group-goto-next-group-function) | |
1164 | 'gnus-topic-goto-next-group) | |
1165 | (set (make-local-variable 'gnus-group-indentation-function) | |
1166 | 'gnus-topic-group-indentation) | |
1167 | (set (make-local-variable 'gnus-group-update-group-function) | |
1168 | 'gnus-topic-update-topics-containing-group) | |
1169 | (set (make-local-variable 'gnus-group-sort-alist-function) | |
1170 | 'gnus-group-sort-topic) | |
1171 | (setq gnus-group-change-level-function 'gnus-topic-change-level) | |
1172 | (setq gnus-goto-missing-group-function 'gnus-topic-goto-missing-group) | |
23f87bed MB |
1173 | (gnus-make-local-hook 'gnus-check-bogus-groups-hook) |
1174 | (add-hook 'gnus-check-bogus-groups-hook 'gnus-topic-clean-alist | |
1175 | nil 'local) | |
eec82323 LMI |
1176 | (setq gnus-topology-checked-p nil) |
1177 | ;; We check the topology. | |
1178 | (when gnus-newsrc-alist | |
1179 | (gnus-topic-check-topology)) | |
6748645f | 1180 | (gnus-run-hooks 'gnus-topic-mode-hook)) |
eec82323 LMI |
1181 | ;; Remove topic infestation. |
1182 | (unless gnus-topic-mode | |
1183 | (remove-hook 'gnus-summary-exit-hook 'gnus-topic-update-topic) | |
7cd26120 | 1184 | (setq gnus-group-change-level-function nil) |
eec82323 LMI |
1185 | (remove-hook 'gnus-check-bogus-groups-hook 'gnus-topic-clean-alist) |
1186 | (setq gnus-group-prepare-function 'gnus-group-prepare-flat) | |
1187 | (setq gnus-group-sort-alist-function 'gnus-group-sort-flat)) | |
1188 | (when redisplay | |
1189 | (gnus-group-list-groups)))) | |
1190 | ||
1191 | (defun gnus-topic-select-group (&optional all) | |
1192 | "Select this newsgroup. | |
1193 | No article is selected automatically. | |
23f87bed | 1194 | If the group is opened, just switch the summary buffer. |
eec82323 | 1195 | If ALL is non-nil, already read articles become readable. |
52bec650 MB |
1196 | |
1197 | If ALL is a positive number, fetch this number of the latest | |
1198 | articles in the group. If ALL is a negative number, fetch this | |
1199 | number of the earliest articles in the group. | |
eec82323 LMI |
1200 | |
1201 | If performed over a topic line, toggle folding the topic." | |
1202 | (interactive "P") | |
23f87bed MB |
1203 | (when (and (eobp) (not (gnus-group-group-name))) |
1204 | (forward-line -1)) | |
eec82323 LMI |
1205 | (if (gnus-group-topic-p) |
1206 | (let ((gnus-group-list-mode | |
1207 | (if all (cons (if (numberp all) all 7) t) gnus-group-list-mode))) | |
16409b0b GM |
1208 | (gnus-topic-fold all) |
1209 | (gnus-dribble-touch)) | |
eec82323 LMI |
1210 | (gnus-group-select-group all))) |
1211 | ||
1212 | (defun gnus-mouse-pick-topic (e) | |
1213 | "Select the group or topic under the mouse pointer." | |
1214 | (interactive "e") | |
1215 | (mouse-set-point e) | |
1216 | (gnus-topic-read-group nil)) | |
1217 | ||
16409b0b GM |
1218 | (defun gnus-topic-expire-articles (topic) |
1219 | "Expire articles in this topic or group." | |
1220 | (interactive (list (gnus-group-topic-name))) | |
1221 | (if (not topic) | |
1222 | (call-interactively 'gnus-group-expire-articles) | |
1223 | (save-excursion | |
1224 | (gnus-message 5 "Expiring groups in %s..." topic) | |
1225 | (let ((gnus-group-marked | |
1226 | (mapcar (lambda (entry) (car (nth 2 entry))) | |
23f87bed MB |
1227 | (gnus-topic-find-groups topic gnus-level-killed t |
1228 | nil t)))) | |
16409b0b GM |
1229 | (gnus-group-expire-articles nil)) |
1230 | (gnus-message 5 "Expiring groups in %s...done" topic)))) | |
1231 | ||
23f87bed MB |
1232 | (defun gnus-topic-catchup-articles (topic) |
1233 | "Catchup this topic or group. | |
1234 | Also see `gnus-group-catchup'." | |
1235 | (interactive (list (gnus-group-topic-name))) | |
1236 | (if (not topic) | |
1237 | (call-interactively 'gnus-group-catchup-current) | |
1238 | (save-excursion | |
1239 | (let* ((groups | |
1240 | (mapcar (lambda (entry) (car (nth 2 entry))) | |
1241 | (gnus-topic-find-groups topic gnus-level-killed t | |
1242 | nil t))) | |
1243 | (buffer-read-only nil) | |
1244 | (gnus-group-marked groups)) | |
1245 | (gnus-group-catchup-current) | |
1246 | (mapcar 'gnus-topic-update-topics-containing-group groups))))) | |
1247 | ||
eec82323 LMI |
1248 | (defun gnus-topic-read-group (&optional all no-article group) |
1249 | "Read news in this newsgroup. | |
1250 | If the prefix argument ALL is non-nil, already read articles become | |
52bec650 MB |
1251 | readable. |
1252 | ||
1253 | If ALL is a positive number, fetch this number of the latest | |
1254 | articles in the group. If ALL is a negative number, fetch this | |
1255 | number of the earliest articles in the group. | |
1256 | ||
1257 | If the optional argument NO-ARTICLE is non-nil, no article will | |
1258 | be auto-selected upon group entry. If GROUP is non-nil, fetch | |
1259 | that group. | |
eec82323 LMI |
1260 | |
1261 | If performed over a topic line, toggle folding the topic." | |
1262 | (interactive "P") | |
1263 | (if (gnus-group-topic-p) | |
1264 | (let ((gnus-group-list-mode | |
1265 | (if all (cons (if (numberp all) all 7) t) gnus-group-list-mode))) | |
1266 | (gnus-topic-fold all)) | |
1267 | (gnus-group-read-group all no-article group))) | |
1268 | ||
1269 | (defun gnus-topic-create-topic (topic parent &optional previous full-topic) | |
a8151ef7 LMI |
1270 | "Create a new TOPIC under PARENT. |
1271 | When used interactively, PARENT will be the topic under point." | |
eec82323 LMI |
1272 | (interactive |
1273 | (list | |
1274 | (read-string "New topic: ") | |
1275 | (gnus-current-topic))) | |
1276 | ;; Check whether this topic already exists. | |
1277 | (when (gnus-topic-find-topology topic) | |
1278 | (error "Topic already exists")) | |
1279 | (unless parent | |
1280 | (setq parent (caar gnus-topic-topology))) | |
1281 | (let ((top (cdr (gnus-topic-find-topology parent))) | |
84169620 | 1282 | (full-topic (or full-topic (list (list topic 'visible nil nil))))) |
eec82323 LMI |
1283 | (unless top |
1284 | (error "No such parent topic: %s" parent)) | |
1285 | (if previous | |
1286 | (progn | |
1287 | (while (and (cdr top) | |
1288 | (not (equal (caaadr top) previous))) | |
1289 | (setq top (cdr top))) | |
1290 | (setcdr top (cons full-topic (cdr top)))) | |
1291 | (nconc top (list full-topic))) | |
1292 | (unless (assoc topic gnus-topic-alist) | |
1293 | (push (list topic) gnus-topic-alist))) | |
1294 | (gnus-topic-enter-dribble) | |
1295 | (gnus-group-list-groups) | |
1296 | (gnus-topic-goto-topic topic)) | |
1297 | ||
a1506d29 JB |
1298 | ;; FIXME: |
1299 | ;; 1. When the marked groups are overlapped with the process | |
16409b0b | 1300 | ;; region, the behavior of move or remove is not right. |
a1506d29 | 1301 | ;; 2. Can't process on several marked groups with a same name, |
16409b0b GM |
1302 | ;; because gnus-group-marked only keeps one copy. |
1303 | ||
eec82323 LMI |
1304 | (defun gnus-topic-move-group (n topic &optional copyp) |
1305 | "Move the next N groups to TOPIC. | |
1306 | If COPYP, copy the groups instead." | |
1307 | (interactive | |
1308 | (list current-prefix-arg | |
23f87bed MB |
1309 | (gnus-completing-read "Move to topic" gnus-topic-alist nil t |
1310 | 'gnus-topic-history))) | |
a1506d29 | 1311 | (let ((use-marked (and (not n) (not (gnus-region-active-p)) |
16409b0b GM |
1312 | gnus-group-marked t)) |
1313 | (groups (gnus-group-process-prefix n)) | |
eec82323 | 1314 | (topicl (assoc topic gnus-topic-alist)) |
eec82323 | 1315 | (start-topic (gnus-group-topic-name)) |
16409b0b | 1316 | (start-group (progn (forward-line 1) (gnus-group-group-name))) |
eec82323 | 1317 | entry) |
16409b0b GM |
1318 | (if (and (not groups) (not copyp) start-topic) |
1319 | (gnus-topic-move start-topic topic) | |
01c52d31 MB |
1320 | (dolist (g groups) |
1321 | (gnus-group-remove-mark g use-marked) | |
1322 | (when (and | |
1323 | (setq entry (assoc (gnus-current-topic) gnus-topic-alist)) | |
1324 | (not copyp)) | |
1325 | (setcdr entry (gnus-delete-first g (cdr entry)))) | |
1326 | (nconc topicl (list g))) | |
16409b0b GM |
1327 | (gnus-topic-enter-dribble) |
1328 | (if start-group | |
1329 | (gnus-group-goto-group start-group) | |
1330 | (gnus-topic-goto-topic start-topic)) | |
1331 | (gnus-group-list-groups)))) | |
eec82323 | 1332 | |
16409b0b | 1333 | (defun gnus-topic-remove-group (&optional n) |
eec82323 LMI |
1334 | "Remove the current group from the topic." |
1335 | (interactive "P") | |
a1506d29 | 1336 | (let ((use-marked (and (not n) (not (gnus-region-active-p)) |
16409b0b GM |
1337 | gnus-group-marked t)) |
1338 | (groups (gnus-group-process-prefix n))) | |
01c52d31 | 1339 | (mapc |
16409b0b GM |
1340 | (lambda (group) |
1341 | (gnus-group-remove-mark group use-marked) | |
1342 | (let ((topicl (assoc (gnus-current-topic) gnus-topic-alist)) | |
1343 | (buffer-read-only nil)) | |
1344 | (when (and topicl group) | |
1345 | (gnus-delete-line) | |
1346 | (gnus-delete-first group topicl)) | |
1347 | (gnus-topic-update-topic))) | |
1348 | groups) | |
1349 | (gnus-topic-enter-dribble) | |
1350 | (gnus-group-position-point))) | |
eec82323 LMI |
1351 | |
1352 | (defun gnus-topic-copy-group (n topic) | |
1353 | "Copy the current group to a topic." | |
1354 | (interactive | |
1355 | (list current-prefix-arg | |
1356 | (completing-read "Copy to topic: " gnus-topic-alist nil t))) | |
1357 | (gnus-topic-move-group n topic t)) | |
1358 | ||
1359 | (defun gnus-topic-kill-group (&optional n discard) | |
1360 | "Kill the next N groups." | |
1361 | (interactive "P") | |
1362 | (if (gnus-group-topic-p) | |
1363 | (let ((topic (gnus-group-topic-name))) | |
1364 | (push (cons | |
1365 | (gnus-topic-find-topology topic) | |
1366 | (assoc topic gnus-topic-alist)) | |
1367 | gnus-topic-killed-topics) | |
1368 | (gnus-topic-remove-topic nil t) | |
1369 | (gnus-topic-find-topology topic nil nil gnus-topic-topology) | |
1370 | (gnus-topic-enter-dribble)) | |
1371 | (gnus-group-kill-group n discard) | |
16409b0b GM |
1372 | (if (not (gnus-group-topic-p)) |
1373 | (gnus-topic-update-topic) | |
1374 | ;; Move up one line so that we update the right topic. | |
1375 | (forward-line -1) | |
1376 | (gnus-topic-update-topic) | |
1377 | (forward-line 1)))) | |
eec82323 LMI |
1378 | |
1379 | (defun gnus-topic-yank-group (&optional arg) | |
1380 | "Yank the last topic." | |
1381 | (interactive "p") | |
1382 | (if gnus-topic-killed-topics | |
1383 | (let* ((previous | |
1384 | (or (gnus-group-topic-name) | |
1385 | (gnus-topic-next-topic (gnus-current-topic)))) | |
1386 | (data (pop gnus-topic-killed-topics)) | |
1387 | (alist (cdr data)) | |
1388 | (item (cdar data))) | |
1389 | (push alist gnus-topic-alist) | |
1390 | (gnus-topic-create-topic | |
1391 | (caar item) (gnus-topic-parent-topic previous) previous | |
1392 | item) | |
1393 | (gnus-topic-enter-dribble) | |
1394 | (gnus-topic-goto-topic (caar item))) | |
1395 | (let* ((prev (gnus-group-group-name)) | |
1396 | (gnus-topic-inhibit-change-level t) | |
1397 | (gnus-group-indentation | |
1398 | (make-string | |
1399 | (* gnus-topic-indent-level | |
1400 | (or (save-excursion | |
1401 | (gnus-topic-goto-topic (gnus-current-topic)) | |
1402 | (gnus-group-topic-level)) | |
1403 | 0)) | |
1404 | ? )) | |
1405 | yanked alist) | |
1406 | ;; We first yank the groups the normal way... | |
1407 | (setq yanked (gnus-group-yank-group arg)) | |
1408 | ;; Then we enter the yanked groups into the topics they belong | |
1409 | ;; to. | |
1410 | (setq alist (assoc (save-excursion | |
1411 | (forward-line -1) | |
1412 | (gnus-current-topic)) | |
1413 | gnus-topic-alist)) | |
1414 | (when (stringp yanked) | |
1415 | (setq yanked (list yanked))) | |
1416 | (if (not prev) | |
1417 | (nconc alist yanked) | |
1418 | (if (not (cdr alist)) | |
1419 | (setcdr alist (nconc yanked (cdr alist))) | |
1420 | (while (cdr alist) | |
1421 | (when (equal (cadr alist) prev) | |
1422 | (setcdr alist (nconc yanked (cdr alist))) | |
1423 | (setq alist nil)) | |
1424 | (setq alist (cdr alist)))))) | |
1425 | (gnus-topic-update-topic))) | |
1426 | ||
16409b0b GM |
1427 | (defun gnus-topic-hide-topic (&optional permanent) |
1428 | "Hide the current topic. | |
1429 | If PERMANENT, make it stay hidden in subsequent sessions as well." | |
1430 | (interactive "P") | |
eec82323 LMI |
1431 | (when (gnus-current-topic) |
1432 | (gnus-topic-goto-topic (gnus-current-topic)) | |
16409b0b | 1433 | (if permanent |
a1506d29 | 1434 | (setcar (cddr |
16409b0b GM |
1435 | (cadr |
1436 | (gnus-topic-find-topology (gnus-current-topic)))) | |
1437 | 'hidden)) | |
1438 | (gnus-topic-remove-topic nil nil))) | |
1439 | ||
1440 | (defun gnus-topic-show-topic (&optional permanent) | |
1441 | "Show the hidden topic. | |
1442 | If PERMANENT, make it stay shown in subsequent sessions as well." | |
1443 | (interactive "P") | |
eec82323 | 1444 | (when (gnus-group-topic-p) |
16409b0b GM |
1445 | (if (not permanent) |
1446 | (gnus-topic-remove-topic t nil) | |
a1506d29 JB |
1447 | (let ((topic |
1448 | (gnus-topic-find-topology | |
16409b0b GM |
1449 | (completing-read "Show topic: " gnus-topic-alist nil t)))) |
1450 | (setcar (cddr (cadr topic)) nil) | |
1451 | (setcar (cdr (cadr topic)) 'visible) | |
1452 | (gnus-group-list-groups))))) | |
eec82323 | 1453 | |
23f87bed | 1454 | (defun gnus-topic-mark-topic (topic &optional unmark non-recursive) |
8b93df01 | 1455 | "Mark all groups in the TOPIC with the process mark. |
23f87bed | 1456 | If NON-RECURSIVE (which is the prefix) is t, don't mark its subtopics." |
8b93df01 DL |
1457 | (interactive (list (gnus-group-topic-name) |
1458 | nil | |
1459 | (and current-prefix-arg t))) | |
eec82323 LMI |
1460 | (if (not topic) |
1461 | (call-interactively 'gnus-group-mark-group) | |
1462 | (save-excursion | |
a1506d29 | 1463 | (let ((groups (gnus-topic-find-groups topic gnus-level-killed t nil |
23f87bed | 1464 | (not non-recursive)))) |
eec82323 LMI |
1465 | (while groups |
1466 | (funcall (if unmark 'gnus-group-remove-mark 'gnus-group-set-mark) | |
1467 | (gnus-info-group (nth 2 (pop groups))))))))) | |
1468 | ||
23f87bed | 1469 | (defun gnus-topic-unmark-topic (topic &optional dummy non-recursive) |
8b93df01 | 1470 | "Remove the process mark from all groups in the TOPIC. |
23f87bed | 1471 | If NON-RECURSIVE (which is the prefix) is t, don't unmark its subtopics." |
8b93df01 DL |
1472 | (interactive (list (gnus-group-topic-name) |
1473 | nil | |
1474 | (and current-prefix-arg t))) | |
eec82323 LMI |
1475 | (if (not topic) |
1476 | (call-interactively 'gnus-group-unmark-group) | |
23f87bed | 1477 | (gnus-topic-mark-topic topic t non-recursive))) |
eec82323 LMI |
1478 | |
1479 | (defun gnus-topic-get-new-news-this-topic (&optional n) | |
1480 | "Check for new news in the current topic." | |
1481 | (interactive "P") | |
1482 | (if (not (gnus-group-topic-p)) | |
1483 | (gnus-group-get-new-news-this-group n) | |
23f87bed MB |
1484 | (let* ((topic (gnus-group-topic-name)) |
1485 | (data (cadr (gnus-topic-find-topology topic)))) | |
1486 | (save-excursion | |
1487 | (gnus-topic-mark-topic topic nil (and n t)) | |
1488 | (gnus-group-get-new-news-this-group)) | |
1489 | (gnus-topic-remove-topic (eq 'visible (cadr data)))))) | |
eec82323 LMI |
1490 | |
1491 | (defun gnus-topic-move-matching (regexp topic &optional copyp) | |
1492 | "Move all groups that match REGEXP to some topic." | |
1493 | (interactive | |
1494 | (let (topic) | |
1495 | (nreverse | |
1496 | (list | |
1497 | (setq topic (completing-read "Move to topic: " gnus-topic-alist nil t)) | |
1498 | (read-string (format "Move to %s (regexp): " topic)))))) | |
1499 | (gnus-group-mark-regexp regexp) | |
1500 | (gnus-topic-move-group nil topic copyp)) | |
1501 | ||
1502 | (defun gnus-topic-copy-matching (regexp topic &optional copyp) | |
1503 | "Copy all groups that match REGEXP to some topic." | |
1504 | (interactive | |
1505 | (let (topic) | |
1506 | (nreverse | |
1507 | (list | |
1508 | (setq topic (completing-read "Copy to topic: " gnus-topic-alist nil t)) | |
1509 | (read-string (format "Copy to %s (regexp): " topic)))))) | |
1510 | (gnus-topic-move-matching regexp topic t)) | |
1511 | ||
1512 | (defun gnus-topic-delete (topic) | |
1513 | "Delete a topic." | |
1514 | (interactive (list (gnus-group-topic-name))) | |
1515 | (unless topic | |
1516 | (error "No topic to be deleted")) | |
1517 | (let ((entry (assoc topic gnus-topic-alist)) | |
1518 | (buffer-read-only nil)) | |
1519 | (when (cdr entry) | |
1520 | (error "Topic not empty")) | |
1521 | ;; Delete if visible. | |
1522 | (when (gnus-topic-goto-topic topic) | |
1523 | (gnus-delete-line)) | |
1524 | ;; Remove from alist. | |
1525 | (setq gnus-topic-alist (delq entry gnus-topic-alist)) | |
1526 | ;; Remove from topology. | |
a8151ef7 LMI |
1527 | (gnus-topic-find-topology topic nil nil 'delete) |
1528 | (gnus-dribble-touch))) | |
eec82323 LMI |
1529 | |
1530 | (defun gnus-topic-rename (old-name new-name) | |
1531 | "Rename a topic." | |
1532 | (interactive | |
1533 | (let ((topic (gnus-current-topic))) | |
1534 | (list topic | |
23f87bed | 1535 | (read-string (format "Rename %s to: " topic) topic)))) |
6748645f LMI |
1536 | ;; Check whether the new name exists. |
1537 | (when (gnus-topic-find-topology new-name) | |
1538 | (error "Topic '%s' already exists" new-name)) | |
1539 | ;; "nil" is an invalid name, for reasons I'd rather not go | |
1540 | ;; into here. Trust me. | |
1541 | (when (equal new-name "nil") | |
1542 | (error "Invalid name: %s" nil)) | |
1543 | ;; Do the renaming. | |
eec82323 LMI |
1544 | (let ((top (gnus-topic-find-topology old-name)) |
1545 | (entry (assoc old-name gnus-topic-alist))) | |
1546 | (when top | |
1547 | (setcar (cadr top) new-name)) | |
1548 | (when entry | |
1549 | (setcar entry new-name)) | |
1550 | (forward-line -1) | |
1551 | (gnus-dribble-touch) | |
6748645f LMI |
1552 | (gnus-group-list-groups) |
1553 | (forward-line 1))) | |
eec82323 LMI |
1554 | |
1555 | (defun gnus-topic-indent (&optional unindent) | |
1556 | "Indent a topic -- make it a sub-topic of the previous topic. | |
1557 | If UNINDENT, remove an indentation." | |
1558 | (interactive "P") | |
1559 | (if unindent | |
1560 | (gnus-topic-unindent) | |
1561 | (let* ((topic (gnus-current-topic)) | |
1562 | (parent (gnus-topic-previous-topic topic)) | |
1563 | (buffer-read-only nil)) | |
1564 | (unless parent | |
1565 | (error "Nothing to indent %s into" topic)) | |
1566 | (when topic | |
1567 | (gnus-topic-goto-topic topic) | |
1568 | (gnus-topic-kill-group) | |
1569 | (push (cdar gnus-topic-killed-topics) gnus-topic-alist) | |
1570 | (gnus-topic-create-topic | |
d942a83d | 1571 | topic parent nil (cdar (car gnus-topic-killed-topics))) |
eec82323 LMI |
1572 | (pop gnus-topic-killed-topics) |
1573 | (or (gnus-topic-goto-topic topic) | |
1574 | (gnus-topic-goto-topic parent)))))) | |
1575 | ||
1576 | (defun gnus-topic-unindent () | |
1577 | "Unindent a topic." | |
1578 | (interactive) | |
1579 | (let* ((topic (gnus-current-topic)) | |
1580 | (parent (gnus-topic-parent-topic topic)) | |
1581 | (grandparent (gnus-topic-parent-topic parent))) | |
1582 | (unless grandparent | |
1583 | (error "Nothing to indent %s into" topic)) | |
1584 | (when topic | |
1585 | (gnus-topic-goto-topic topic) | |
1586 | (gnus-topic-kill-group) | |
1587 | (push (cdar gnus-topic-killed-topics) gnus-topic-alist) | |
1588 | (gnus-topic-create-topic | |
1589 | topic grandparent (gnus-topic-next-topic parent) | |
d942a83d | 1590 | (cdar (car gnus-topic-killed-topics))) |
eec82323 LMI |
1591 | (pop gnus-topic-killed-topics) |
1592 | (gnus-topic-goto-topic topic)))) | |
1593 | ||
1594 | (defun gnus-topic-list-active (&optional force) | |
1595 | "List all groups that Gnus knows about in a topicsified fashion. | |
1596 | If FORCE, always re-read the active file." | |
1597 | (interactive "P") | |
1598 | (when force | |
1599 | (gnus-get-killed-groups)) | |
1600 | (gnus-topic-grok-active force) | |
1601 | (let ((gnus-topic-topology gnus-topic-active-topology) | |
1602 | (gnus-topic-alist gnus-topic-active-alist) | |
1603 | gnus-killed-list gnus-zombie-list) | |
6748645f | 1604 | (gnus-group-list-groups gnus-level-killed nil 1))) |
eec82323 | 1605 | |
a8151ef7 LMI |
1606 | (defun gnus-topic-toggle-display-empty-topics () |
1607 | "Show/hide topics that have no unread articles." | |
1608 | (interactive) | |
1609 | (setq gnus-topic-display-empty-topics | |
1610 | (not gnus-topic-display-empty-topics)) | |
1611 | (gnus-group-list-groups) | |
1612 | (message "%s empty topics" | |
1613 | (if gnus-topic-display-empty-topics | |
1614 | "Showing" "Hiding"))) | |
1615 | ||
eec82323 LMI |
1616 | ;;; Topic sorting functions |
1617 | ||
1618 | (defun gnus-topic-edit-parameters (group) | |
1619 | "Edit the group parameters of GROUP. | |
1620 | If performed on a topic, edit the topic parameters instead." | |
1621 | (interactive (list (gnus-group-group-name))) | |
1622 | (if group | |
1623 | (gnus-group-edit-group-parameters group) | |
1624 | (if (not (gnus-group-topic-p)) | |
a8151ef7 | 1625 | (error "Nothing to edit on the current line") |
eec82323 LMI |
1626 | (let ((topic (gnus-group-topic-name))) |
1627 | (gnus-edit-form | |
1628 | (gnus-topic-parameters topic) | |
1629 | (format "Editing the topic parameters for `%s'." | |
1630 | (or group topic)) | |
1631 | `(lambda (form) | |
1632 | (gnus-topic-set-parameters ,topic form))))))) | |
1633 | ||
1634 | (defun gnus-group-sort-topic (func reverse) | |
1635 | "Sort groups in the topics according to FUNC and REVERSE." | |
1636 | (let ((alist gnus-topic-alist)) | |
1637 | (while alist | |
1638 | ;; !!!Sometimes nil elements sneak into the alist, | |
1639 | ;; for some reason or other. | |
1640 | (setcar alist (delq nil (car alist))) | |
1641 | (setcar alist (delete "dummy.group" (car alist))) | |
1642 | (gnus-topic-sort-topic (pop alist) func reverse)))) | |
1643 | ||
1644 | (defun gnus-topic-sort-topic (topic func reverse) | |
1645 | ;; Each topic only lists the name of the group, while | |
1646 | ;; the sort predicates expect group infos as inputs. | |
1647 | ;; So we first transform the group names into infos, | |
1648 | ;; then sort, and then transform back into group names. | |
1649 | (setcdr | |
1650 | topic | |
1651 | (mapcar | |
1652 | (lambda (info) (gnus-info-group info)) | |
1653 | (sort | |
1654 | (mapcar | |
1655 | (lambda (group) (gnus-get-info group)) | |
1656 | (cdr topic)) | |
1657 | func))) | |
1658 | ;; Do the reversal, if necessary. | |
1659 | (when reverse | |
1660 | (setcdr topic (nreverse (cdr topic))))) | |
1661 | ||
1662 | (defun gnus-topic-sort-groups (func &optional reverse) | |
1663 | "Sort the current topic according to FUNC. | |
1664 | If REVERSE, reverse the sorting order." | |
1665 | (interactive (list gnus-group-sort-function current-prefix-arg)) | |
1666 | (let ((topic (assoc (gnus-current-topic) gnus-topic-alist))) | |
1667 | (gnus-topic-sort-topic | |
1668 | topic (gnus-make-sort-function func) reverse) | |
1669 | (gnus-group-list-groups))) | |
1670 | ||
1671 | (defun gnus-topic-sort-groups-by-alphabet (&optional reverse) | |
1672 | "Sort the current topic alphabetically by group name. | |
1673 | If REVERSE, sort in reverse order." | |
1674 | (interactive "P") | |
1675 | (gnus-topic-sort-groups 'gnus-group-sort-by-alphabet reverse)) | |
1676 | ||
1677 | (defun gnus-topic-sort-groups-by-unread (&optional reverse) | |
1678 | "Sort the current topic by number of unread articles. | |
1679 | If REVERSE, sort in reverse order." | |
1680 | (interactive "P") | |
1681 | (gnus-topic-sort-groups 'gnus-group-sort-by-unread reverse)) | |
1682 | ||
1683 | (defun gnus-topic-sort-groups-by-level (&optional reverse) | |
1684 | "Sort the current topic by group level. | |
1685 | If REVERSE, sort in reverse order." | |
1686 | (interactive "P") | |
1687 | (gnus-topic-sort-groups 'gnus-group-sort-by-level reverse)) | |
1688 | ||
1689 | (defun gnus-topic-sort-groups-by-score (&optional reverse) | |
1690 | "Sort the current topic by group score. | |
1691 | If REVERSE, sort in reverse order." | |
1692 | (interactive "P") | |
1693 | (gnus-topic-sort-groups 'gnus-group-sort-by-score reverse)) | |
1694 | ||
1695 | (defun gnus-topic-sort-groups-by-rank (&optional reverse) | |
1696 | "Sort the current topic by group rank. | |
1697 | If REVERSE, sort in reverse order." | |
1698 | (interactive "P") | |
1699 | (gnus-topic-sort-groups 'gnus-group-sort-by-rank reverse)) | |
1700 | ||
1701 | (defun gnus-topic-sort-groups-by-method (&optional reverse) | |
1702 | "Sort the current topic alphabetically by backend name. | |
1703 | If REVERSE, sort in reverse order." | |
1704 | (interactive "P") | |
1705 | (gnus-topic-sort-groups 'gnus-group-sort-by-method reverse)) | |
1706 | ||
23f87bed MB |
1707 | (defun gnus-topic-sort-groups-by-server (&optional reverse) |
1708 | "Sort the current topic alphabetically by server name. | |
1709 | If REVERSE, sort in reverse order." | |
1710 | (interactive "P") | |
1711 | (gnus-topic-sort-groups 'gnus-group-sort-by-server reverse)) | |
1712 | ||
16409b0b GM |
1713 | (defun gnus-topic-sort-topics-1 (top reverse) |
1714 | (if (cdr top) | |
1715 | (let ((subtop | |
23f87bed MB |
1716 | (mapcar (gnus-byte-compile |
1717 | `(lambda (top) | |
1718 | (gnus-topic-sort-topics-1 top ,reverse))) | |
16409b0b | 1719 | (sort (cdr top) |
23f87bed MB |
1720 | (lambda (t1 t2) |
1721 | (string-lessp (caar t1) (caar t2))))))) | |
16409b0b GM |
1722 | (setcdr top (if reverse (reverse subtop) subtop)))) |
1723 | top) | |
1724 | ||
1725 | (defun gnus-topic-sort-topics (&optional topic reverse) | |
8f688cb0 | 1726 | "Sort topics in TOPIC alphabetically by topic name. |
16409b0b | 1727 | If REVERSE, reverse the sorting order." |
a1506d29 JB |
1728 | (interactive |
1729 | (list (completing-read "Sort topics in : " gnus-topic-alist nil t | |
16409b0b GM |
1730 | (gnus-current-topic)) |
1731 | current-prefix-arg)) | |
1732 | (let ((topic-topology (or (and topic (cdr (gnus-topic-find-topology topic))) | |
1733 | gnus-topic-topology))) | |
1734 | (gnus-topic-sort-topics-1 topic-topology reverse) | |
1735 | (gnus-topic-enter-dribble) | |
1736 | (gnus-group-list-groups) | |
1737 | (gnus-topic-goto-topic topic))) | |
1738 | ||
1739 | (defun gnus-topic-move (current to) | |
1740 | "Move the CURRENT topic to TO." | |
a1506d29 JB |
1741 | (interactive |
1742 | (list | |
16409b0b GM |
1743 | (gnus-group-topic-name) |
1744 | (completing-read "Move to topic: " gnus-topic-alist nil t))) | |
1745 | (unless (and current to) | |
1746 | (error "Can't find topic")) | |
1747 | (let ((current-top (cdr (gnus-topic-find-topology current))) | |
1748 | (to-top (cdr (gnus-topic-find-topology to)))) | |
1749 | (unless current-top | |
1750 | (error "Can't find topic `%s'" current)) | |
1751 | (unless to-top | |
1752 | (error "Can't find topic `%s'" to)) | |
1753 | (if (gnus-topic-find-topology to current-top 0);; Don't care the level | |
1754 | (error "Can't move `%s' to its sub-level" current)) | |
1755 | (gnus-topic-find-topology current nil nil 'delete) | |
01c52d31 | 1756 | (setcdr (last to-top) (list current-top)) |
16409b0b GM |
1757 | (gnus-topic-enter-dribble) |
1758 | (gnus-group-list-groups) | |
1759 | (gnus-topic-goto-topic current))) | |
1760 | ||
1761 | (defun gnus-subscribe-topics (newsgroup) | |
1762 | (catch 'end | |
1763 | (let (match gnus-group-change-level-function) | |
1764 | (dolist (topic (gnus-topic-list)) | |
1765 | (when (and (setq match (cdr (assq 'subscribe | |
1766 | (gnus-topic-parameters topic)))) | |
1767 | (string-match match newsgroup)) | |
1768 | ;; Just subscribe the group. | |
1769 | (gnus-subscribe-alphabetically newsgroup) | |
1770 | ;; Add the group to the topic. | |
1771 | (nconc (assoc topic gnus-topic-alist) (list newsgroup)) | |
23f87bed MB |
1772 | ;; if this topic specifies a default level, use it |
1773 | (let ((subscribe-level (cdr (assq 'subscribe-level | |
1774 | (gnus-topic-parameters topic))))) | |
1775 | (when subscribe-level | |
1776 | (gnus-group-change-level newsgroup subscribe-level | |
1777 | gnus-level-default-subscribed))) | |
1778 | (throw 'end t))) | |
1779 | nil))) | |
a1506d29 | 1780 | |
eec82323 LMI |
1781 | (provide 'gnus-topic) |
1782 | ||
cbee283d | 1783 | ;; arch-tag: bf176856-f30c-40f0-ae77-e41529a1134c |
eec82323 | 1784 | ;;; gnus-topic.el ends here |