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eec82323 | 1 | ;;; gnus-topic.el --- a folding minor mode for Gnus group buffers |
e84b4b86 | 2 | |
ba318903 | 3 | ;; Copyright (C) 1995-2014 Free Software Foundation, Inc. |
eec82323 LMI |
4 | |
5 | ;; Author: Ilja Weis <kult@uni-paderborn.de> | |
6748645f | 6 | ;; Lars Magne Ingebrigtsen <larsi@gnus.org> |
eec82323 LMI |
7 | ;; Keywords: news |
8 | ||
9 | ;; This file is part of GNU Emacs. | |
10 | ||
5e809f55 | 11 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
eec82323 | 12 | ;; it under the terms of the GNU General Public License as published by |
5e809f55 GM |
13 | ;; the Free Software Foundation, either version 3 of the License, or |
14 | ;; (at your option) any later version. | |
eec82323 LMI |
15 | |
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
5e809f55 | 22 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
eec82323 LMI |
23 | |
24 | ;;; Commentary: | |
25 | ||
26 | ;;; Code: | |
27 | ||
5ab7173c RS |
28 | (eval-when-compile (require 'cl)) |
29 | ||
eec82323 LMI |
30 | (require 'gnus) |
31 | (require 'gnus-group) | |
32 | (require 'gnus-start) | |
6748645f | 33 | (require 'gnus-util) |
eec82323 LMI |
34 | |
35 | (defgroup gnus-topic nil | |
36 | "Group topics." | |
37 | :group 'gnus-group) | |
38 | ||
39 | (defvar gnus-topic-mode nil | |
40 | "Minor mode for Gnus group buffers.") | |
41 | ||
42 | (defcustom gnus-topic-mode-hook nil | |
43 | "Hook run in topic mode buffers." | |
44 | :type 'hook | |
45 | :group 'gnus-topic) | |
46 | ||
23f87bed MB |
47 | (when (featurep 'xemacs) |
48 | (add-hook 'gnus-topic-mode-hook 'gnus-xmas-topic-menu-add)) | |
49 | ||
eec82323 LMI |
50 | (defcustom gnus-topic-line-format "%i[ %(%{%n%}%) -- %A ]%v\n" |
51 | "Format of topic lines. | |
52 | It works along the same lines as a normal formatting string, | |
53 | with some simple extensions. | |
54 | ||
55 | %i Indentation based on topic level. | |
56 | %n Topic name. | |
57 | %v Nothing if the topic is visible, \"...\" otherwise. | |
58 | %g Number of groups in the topic. | |
59 | %a Number of unread articles in the groups in the topic. | |
60 | %A Number of unread articles in the groups in the topic and its subtopics. | |
23f87bed MB |
61 | |
62 | General format specifiers can also be used. | |
63 | See Info node `(gnus)Formatting Variables'." | |
64 | :link '(custom-manual "(gnus)Formatting Variables") | |
eec82323 LMI |
65 | :type 'string |
66 | :group 'gnus-topic) | |
67 | ||
68 | (defcustom gnus-topic-indent-level 2 | |
69 | "*How much each subtopic should be indented." | |
70 | :type 'integer | |
71 | :group 'gnus-topic) | |
72 | ||
73 | (defcustom gnus-topic-display-empty-topics t | |
74 | "*If non-nil, display the topic lines even of topics that have no unread articles." | |
75 | :type 'boolean | |
76 | :group 'gnus-topic) | |
77 | ||
78 | ;; Internal variables. | |
79 | ||
80 | (defvar gnus-topic-active-topology nil) | |
81 | (defvar gnus-topic-active-alist nil) | |
6748645f | 82 | (defvar gnus-topic-unreads nil) |
eec82323 LMI |
83 | |
84 | (defvar gnus-topology-checked-p nil | |
85 | "Whether the topology has been checked in this session.") | |
86 | ||
87 | (defvar gnus-topic-killed-topics nil) | |
88 | (defvar gnus-topic-inhibit-change-level nil) | |
eec82323 LMI |
89 | |
90 | (defconst gnus-topic-line-format-alist | |
91 | `((?n name ?s) | |
92 | (?v visible ?s) | |
93 | (?i indentation ?s) | |
94 | (?g number-of-groups ?d) | |
95 | (?a (gnus-topic-articles-in-topic entries) ?d) | |
96 | (?A total-number-of-articles ?d) | |
97 | (?l level ?d))) | |
98 | ||
99 | (defvar gnus-topic-line-format-spec nil) | |
100 | ||
101 | ;;; Utility functions | |
102 | ||
103 | (defun gnus-group-topic-name () | |
104 | "The name of the topic on the current line." | |
01c52d31 | 105 | (let ((topic (get-text-property (point-at-bol) 'gnus-topic))) |
eec82323 LMI |
106 | (and topic (symbol-name topic)))) |
107 | ||
108 | (defun gnus-group-topic-level () | |
109 | "The level of the topic on the current line." | |
01c52d31 | 110 | (get-text-property (point-at-bol) 'gnus-topic-level)) |
eec82323 LMI |
111 | |
112 | (defun gnus-group-topic-unread () | |
113 | "The number of unread articles in topic on the current line." | |
01c52d31 | 114 | (get-text-property (point-at-bol) 'gnus-topic-unread)) |
eec82323 LMI |
115 | |
116 | (defun gnus-topic-unread (topic) | |
117 | "Return the number of unread articles in TOPIC." | |
6748645f | 118 | (or (cdr (assoc topic gnus-topic-unreads)) |
eec82323 LMI |
119 | 0)) |
120 | ||
121 | (defun gnus-group-topic-p () | |
122 | "Return non-nil if the current line is a topic." | |
123 | (gnus-group-topic-name)) | |
124 | ||
125 | (defun gnus-topic-visible-p () | |
126 | "Return non-nil if the current topic is visible." | |
01c52d31 | 127 | (get-text-property (point-at-bol) 'gnus-topic-visible)) |
eec82323 LMI |
128 | |
129 | (defun gnus-topic-articles-in-topic (entries) | |
130 | (let ((total 0) | |
131 | number) | |
132 | (while entries | |
133 | (when (numberp (setq number (car (pop entries)))) | |
134 | (incf total number))) | |
135 | total)) | |
136 | ||
137 | (defun gnus-group-topic (group) | |
138 | "Return the topic GROUP is a member of." | |
139 | (let ((alist gnus-topic-alist) | |
140 | out) | |
141 | (while alist | |
142 | (when (member group (cdar alist)) | |
143 | (setq out (caar alist) | |
144 | alist nil)) | |
145 | (setq alist (cdr alist))) | |
146 | out)) | |
147 | ||
eec82323 | 148 | (defun gnus-topic-goto-topic (topic) |
eec82323 LMI |
149 | (when topic |
150 | (gnus-goto-char (text-property-any (point-min) (point-max) | |
151 | 'gnus-topic (intern topic))))) | |
152 | ||
16409b0b GM |
153 | (defun gnus-topic-jump-to-topic (topic) |
154 | "Go to TOPIC." | |
155 | (interactive | |
229b59da | 156 | (list (gnus-completing-read "Go to topic" (gnus-topic-list) t))) |
01c52d31 MB |
157 | (let ((buffer-read-only nil)) |
158 | (dolist (topic (gnus-current-topics topic)) | |
159 | (unless (gnus-topic-goto-topic topic) | |
160 | (gnus-topic-goto-missing-topic topic) | |
161 | (gnus-topic-display-missing-topic topic)))) | |
16409b0b | 162 | (gnus-topic-goto-topic topic)) |
a1506d29 | 163 | |
eec82323 LMI |
164 | (defun gnus-current-topic () |
165 | "Return the name of the current topic." | |
166 | (let ((result | |
167 | (or (get-text-property (point) 'gnus-topic) | |
168 | (save-excursion | |
169 | (and (gnus-goto-char (previous-single-property-change | |
170 | (point) 'gnus-topic)) | |
171 | (get-text-property (max (1- (point)) (point-min)) | |
172 | 'gnus-topic)))))) | |
173 | (when result | |
174 | (symbol-name result)))) | |
175 | ||
6748645f LMI |
176 | (defun gnus-current-topics (&optional topic) |
177 | "Return a list of all current topics, lowest in hierarchy first. | |
178 | If TOPIC, start with that topic." | |
179 | (let ((topic (or topic (gnus-current-topic))) | |
eec82323 LMI |
180 | topics) |
181 | (while topic | |
182 | (push topic topics) | |
183 | (setq topic (gnus-topic-parent-topic topic))) | |
184 | (nreverse topics))) | |
185 | ||
186 | (defun gnus-group-active-topic-p () | |
187 | "Say whether the current topic comes from the active topics." | |
01c52d31 | 188 | (get-text-property (point-at-bol) 'gnus-active)) |
eec82323 | 189 | |
8b93df01 DL |
190 | (defun gnus-topic-find-groups (topic &optional level all lowest recursive) |
191 | "Return entries for all visible groups in TOPIC. | |
192 | If RECURSIVE is t, return groups in its subtopics too." | |
eec82323 | 193 | (let ((groups (cdr (assoc topic gnus-topic-alist))) |
23f87bed | 194 | info clevel unread group params visible-groups entry active) |
eec82323 | 195 | (setq lowest (or lowest 1)) |
6748645f | 196 | (setq level (or level gnus-level-unsubscribed)) |
eec82323 LMI |
197 | ;; We go through the newsrc to look for matches. |
198 | (while groups | |
199 | (when (setq group (pop groups)) | |
01c52d31 | 200 | (setq entry (gnus-group-entry group) |
eec82323 LMI |
201 | info (nth 2 entry) |
202 | params (gnus-info-params info) | |
203 | active (gnus-active group) | |
204 | unread (or (car entry) | |
205 | (and (not (equal group "dummy.group")) | |
206 | active | |
207 | (- (1+ (cdr active)) (car active)))) | |
208 | clevel (or (gnus-info-level info) | |
6748645f LMI |
209 | (if (member group gnus-zombie-list) |
210 | gnus-level-zombie gnus-level-killed)))) | |
eec82323 | 211 | (and |
16409b0b | 212 | info ; nil means that the group is dead. |
eec82323 LMI |
213 | (<= clevel level) |
214 | (>= clevel lowest) ; Is inside the level we want. | |
215 | (or all | |
16409b0b GM |
216 | (if (or (eq unread t) |
217 | (eq unread nil)) | |
eec82323 LMI |
218 | gnus-group-list-inactive-groups |
219 | (> unread 0)) | |
220 | (and gnus-list-groups-with-ticked-articles | |
221 | (cdr (assq 'tick (gnus-info-marks info)))) | |
16409b0b | 222 | ;; Has right readedness. |
eec82323 LMI |
223 | ;; Check for permanent visibility. |
224 | (and gnus-permanently-visible-groups | |
225 | (string-match gnus-permanently-visible-groups group)) | |
226 | (memq 'visible params) | |
227 | (cdr (assq 'visible params))) | |
228 | ;; Add this group to the list of visible groups. | |
229 | (push (or entry group) visible-groups))) | |
8b93df01 | 230 | (setq visible-groups (nreverse visible-groups)) |
a1506d29 | 231 | (when recursive |
8b93df01 DL |
232 | (if (eq recursive t) |
233 | (setq recursive (cdr (gnus-topic-find-topology topic)))) | |
01c52d31 MB |
234 | (dolist (topic-topology (cdr recursive)) |
235 | (setq visible-groups | |
236 | (nconc visible-groups | |
237 | (gnus-topic-find-groups | |
238 | (caar topic-topology) | |
239 | level all lowest topic-topology))))) | |
8b93df01 | 240 | visible-groups)) |
eec82323 | 241 | |
23f87bed MB |
242 | (defun gnus-topic-goto-previous-topic (n) |
243 | "Go to the N'th previous topic." | |
244 | (interactive "p") | |
245 | (gnus-topic-goto-next-topic (- n))) | |
246 | ||
247 | (defun gnus-topic-goto-next-topic (n) | |
248 | "Go to the N'th next topic." | |
249 | (interactive "p") | |
250 | (let ((backward (< n 0)) | |
251 | (n (abs n)) | |
252 | (topic (gnus-current-topic))) | |
253 | (while (and (> n 0) | |
254 | (setq topic | |
255 | (if backward | |
256 | (gnus-topic-previous-topic topic) | |
257 | (gnus-topic-next-topic topic)))) | |
258 | (gnus-topic-goto-topic topic) | |
259 | (setq n (1- n))) | |
260 | (when (/= 0 n) | |
261 | (gnus-message 7 "No more topics")) | |
262 | n)) | |
263 | ||
eec82323 LMI |
264 | (defun gnus-topic-previous-topic (topic) |
265 | "Return the previous topic on the same level as TOPIC." | |
266 | (let ((top (cddr (gnus-topic-find-topology | |
267 | (gnus-topic-parent-topic topic))))) | |
268 | (unless (equal topic (caaar top)) | |
269 | (while (and top (not (equal (caaadr top) topic))) | |
270 | (setq top (cdr top))) | |
271 | (caaar top)))) | |
272 | ||
273 | (defun gnus-topic-parent-topic (topic &optional topology) | |
274 | "Return the parent of TOPIC." | |
275 | (unless topology | |
276 | (setq topology gnus-topic-topology)) | |
277 | (let ((parent (car (pop topology))) | |
278 | result found) | |
279 | (while (and topology | |
280 | (not (setq found (equal (caaar topology) topic))) | |
281 | (not (setq result (gnus-topic-parent-topic | |
282 | topic (car topology))))) | |
283 | (setq topology (cdr topology))) | |
284 | (or result (and found parent)))) | |
285 | ||
286 | (defun gnus-topic-next-topic (topic &optional previous) | |
287 | "Return the next sibling of TOPIC." | |
288 | (let ((parentt (cddr (gnus-topic-find-topology | |
289 | (gnus-topic-parent-topic topic)))) | |
290 | prev) | |
291 | (while (and parentt | |
292 | (not (equal (caaar parentt) topic))) | |
293 | (setq prev (caaar parentt) | |
294 | parentt (cdr parentt))) | |
295 | (if previous | |
296 | prev | |
297 | (caaadr parentt)))) | |
298 | ||
299 | (defun gnus-topic-forward-topic (num) | |
300 | "Go to the next topic on the same level as the current one." | |
301 | (let* ((topic (gnus-current-topic)) | |
302 | (way (if (< num 0) 'gnus-topic-previous-topic | |
303 | 'gnus-topic-next-topic)) | |
304 | (num (abs num))) | |
305 | (while (and (not (zerop num)) | |
306 | (setq topic (funcall way topic))) | |
307 | (when (gnus-topic-goto-topic topic) | |
308 | (decf num))) | |
309 | (unless (zerop num) | |
310 | (goto-char (point-max))) | |
311 | num)) | |
312 | ||
313 | (defun gnus-topic-find-topology (topic &optional topology level remove) | |
314 | "Return the topology of TOPIC." | |
315 | (unless topology | |
316 | (setq topology gnus-topic-topology) | |
317 | (setq level 0)) | |
318 | (let ((top topology) | |
319 | result) | |
320 | (if (equal (caar topology) topic) | |
321 | (progn | |
322 | (when remove | |
323 | (delq topology remove)) | |
324 | (cons level topology)) | |
325 | (setq topology (cdr topology)) | |
326 | (while (and topology | |
327 | (not (setq result (gnus-topic-find-topology | |
328 | topic (car topology) (1+ level) | |
329 | (and remove top))))) | |
330 | (setq topology (cdr topology))) | |
331 | result))) | |
332 | ||
333 | (defvar gnus-tmp-topics nil) | |
334 | (defun gnus-topic-list (&optional topology) | |
335 | "Return a list of all topics in the topology." | |
336 | (unless topology | |
337 | (setq topology gnus-topic-topology | |
338 | gnus-tmp-topics nil)) | |
339 | (push (caar topology) gnus-tmp-topics) | |
01c52d31 | 340 | (mapc 'gnus-topic-list (cdr topology)) |
eec82323 LMI |
341 | gnus-tmp-topics) |
342 | ||
343 | ;;; Topic parameter jazz | |
344 | ||
345 | (defun gnus-topic-parameters (topic) | |
346 | "Return the parameters for TOPIC." | |
347 | (let ((top (gnus-topic-find-topology topic))) | |
348 | (when top | |
349 | (nth 3 (cadr top))))) | |
350 | ||
351 | (defun gnus-topic-set-parameters (topic parameters) | |
352 | "Set the topic parameters of TOPIC to PARAMETERS." | |
353 | (let ((top (gnus-topic-find-topology topic))) | |
354 | (unless top | |
355 | (error "No such topic: %s" topic)) | |
356 | ;; We may have to extend if there is no parameters here | |
357 | ;; to begin with. | |
358 | (unless (nthcdr 2 (cadr top)) | |
359 | (nconc (cadr top) (list nil))) | |
360 | (unless (nthcdr 3 (cadr top)) | |
361 | (nconc (cadr top) (list nil))) | |
362 | (setcar (nthcdr 3 (cadr top)) parameters) | |
363 | (gnus-dribble-enter | |
364 | (format "(gnus-topic-set-parameters %S '%S)" topic parameters)))) | |
365 | ||
366 | (defun gnus-group-topic-parameters (group) | |
01c52d31 MB |
367 | "Compute the group parameters for GROUP in topic mode. |
368 | Possibly inherit parameters from topics above GROUP." | |
6748645f | 369 | (let ((params-list (copy-sequence (gnus-group-get-parameter group)))) |
eec82323 | 370 | (save-excursion |
01c52d31 MB |
371 | (gnus-topic-hierarchical-parameters |
372 | ;; First we try to go to the group within the group buffer and find the | |
373 | ;; topic for the group that way. This hopefully copes well with groups | |
374 | ;; that are in more than one topic. Failing that (i.e. when the group | |
375 | ;; isn't visible in the group buffer) we find a topic for the group via | |
376 | ;; gnus-group-topic. | |
377 | (or (and (gnus-group-goto-group group) | |
378 | (gnus-current-topic)) | |
379 | (gnus-group-topic group)) | |
380 | params-list)))) | |
381 | ||
382 | (defun gnus-topic-hierarchical-parameters (topic &optional group-params-list) | |
383 | "Compute the topic parameters for TOPIC. | |
384 | Possibly inherit parameters from topics above TOPIC. | |
385 | If optional argument GROUP-PARAMS-LIST is non-nil, use it as the basis for | |
386 | inheritance." | |
387 | (let ((params-list | |
388 | ;; We probably have lots of nil elements here, so we remove them. | |
389 | ;; Probably faster than doing this "properly". | |
390 | (delq nil (cons group-params-list | |
391 | (mapcar 'gnus-topic-parameters | |
392 | (gnus-current-topics topic))))) | |
393 | param out params) | |
6748645f LMI |
394 | ;; Now we have all the parameters, so we go through them |
395 | ;; and do inheritance in the obvious way. | |
01c52d31 MB |
396 | (let (posting-style) |
397 | (while (setq params (pop params-list)) | |
398 | (while (setq param (pop params)) | |
399 | (when (atom param) | |
400 | (setq param (cons param t))) | |
401 | (cond ((eq (car param) 'posting-style) | |
402 | (let ((param (cdr param)) | |
403 | elt) | |
404 | (while (setq elt (pop param)) | |
405 | (unless (assoc (car elt) posting-style) | |
406 | (push elt posting-style))))) | |
407 | (t | |
408 | (unless (assq (car param) out) | |
409 | (push param out)))))) | |
410 | (and posting-style (push (cons 'posting-style posting-style) out))) | |
6748645f LMI |
411 | ;; Return the resulting parameter list. |
412 | out)) | |
eec82323 LMI |
413 | |
414 | ;;; General utility functions | |
415 | ||
416 | (defun gnus-topic-enter-dribble () | |
417 | (gnus-dribble-enter | |
418 | (format "(setq gnus-topic-topology '%S)" gnus-topic-topology))) | |
419 | ||
420 | ;;; Generating group buffers | |
421 | ||
23f87bed | 422 | (defun gnus-group-prepare-topics (level &optional predicate lowest |
16409b0b | 423 | regexp list-topic topic-level) |
6748645f LMI |
424 | "List all newsgroups with unread articles of level LEVEL or lower. |
425 | Use the `gnus-group-topics' to sort the groups. | |
09e80d9f | 426 | If PREDICATE is a function, list groups that the function returns non-nil; |
23f87bed | 427 | if it is t, list groups that have no unread articles. |
eec82323 LMI |
428 | If LOWEST is non-nil, list all newsgroups of level LOWEST or higher." |
429 | (set-buffer gnus-group-buffer) | |
430 | (let ((buffer-read-only nil) | |
23f87bed MB |
431 | (lowest (or lowest 1)) |
432 | (not-in-list | |
433 | (and gnus-group-listed-groups | |
434 | (copy-sequence gnus-group-listed-groups)))) | |
eec82323 | 435 | |
23f87bed | 436 | (gnus-update-format-specifications nil 'topic) |
e84b4b86 | 437 | |
eec82323 LMI |
438 | (when (or (not gnus-topic-alist) |
439 | (not gnus-topology-checked-p)) | |
440 | (gnus-topic-check-topology)) | |
441 | ||
442 | (unless list-topic | |
443 | (erase-buffer)) | |
444 | ||
445 | ;; List dead groups? | |
23f87bed MB |
446 | (when (or gnus-group-listed-groups |
447 | (and (>= level gnus-level-zombie) | |
448 | (<= lowest gnus-level-zombie))) | |
eec82323 LMI |
449 | (gnus-group-prepare-flat-list-dead |
450 | (setq gnus-zombie-list (sort gnus-zombie-list 'string<)) | |
451 | gnus-level-zombie ?Z | |
452 | regexp)) | |
453 | ||
23f87bed MB |
454 | (when (or gnus-group-listed-groups |
455 | (and (>= level gnus-level-killed) | |
456 | (<= lowest gnus-level-killed))) | |
eec82323 LMI |
457 | (gnus-group-prepare-flat-list-dead |
458 | (setq gnus-killed-list (sort gnus-killed-list 'string<)) | |
23f87bed MB |
459 | gnus-level-killed ?K regexp) |
460 | (when not-in-list | |
461 | (unless gnus-killed-hashtb | |
462 | (gnus-make-hashtable-from-killed)) | |
463 | (gnus-group-prepare-flat-list-dead | |
464 | (gnus-remove-if (lambda (group) | |
01c52d31 | 465 | (or (gnus-group-entry group) |
23f87bed MB |
466 | (gnus-gethash group gnus-killed-hashtb))) |
467 | not-in-list) | |
468 | gnus-level-killed ?K regexp))) | |
eec82323 LMI |
469 | |
470 | ;; Use topics. | |
471 | (prog1 | |
23f87bed MB |
472 | (when (or (< lowest gnus-level-zombie) |
473 | gnus-group-listed-groups) | |
eec82323 LMI |
474 | (if list-topic |
475 | (let ((top (gnus-topic-find-topology list-topic))) | |
476 | (gnus-topic-prepare-topic (cdr top) (car top) | |
23f87bed MB |
477 | (or topic-level level) predicate |
478 | nil lowest regexp)) | |
eec82323 | 479 | (gnus-topic-prepare-topic gnus-topic-topology 0 |
23f87bed MB |
480 | (or topic-level level) predicate |
481 | nil lowest regexp))) | |
eec82323 | 482 | (gnus-group-set-mode-line) |
23f87bed | 483 | (setq gnus-group-list-mode (cons level predicate)) |
6748645f | 484 | (gnus-run-hooks 'gnus-group-prepare-hook)))) |
eec82323 | 485 | |
23f87bed MB |
486 | (defun gnus-topic-prepare-topic (topicl level &optional list-level |
487 | predicate silent | |
488 | lowest regexp) | |
eec82323 LMI |
489 | "Insert TOPIC into the group buffer. |
490 | If SILENT, don't insert anything. Return the number of unread | |
491 | articles in the topic and its subtopics." | |
492 | (let* ((type (pop topicl)) | |
6748645f | 493 | (entries (gnus-topic-find-groups |
23f87bed MB |
494 | (car type) |
495 | (if gnus-group-listed-groups | |
496 | gnus-level-killed | |
497 | list-level) | |
498 | (or predicate gnus-group-listed-groups | |
16409b0b | 499 | (cdr (assq 'visible |
6748645f LMI |
500 | (gnus-topic-hierarchical-parameters |
501 | (car type))))) | |
23f87bed | 502 | (if gnus-group-listed-groups 0 lowest))) |
eec82323 LMI |
503 | (visiblep (and (eq (nth 1 type) 'visible) (not silent))) |
504 | (gnus-group-indentation | |
505 | (make-string (* gnus-topic-indent-level level) ? )) | |
506 | (beg (progn (beginning-of-line) (point))) | |
507 | (topicl (reverse topicl)) | |
508 | (all-entries entries) | |
509 | (point-max (point-max)) | |
510 | (unread 0) | |
511 | (topic (car type)) | |
512 | info entry end active tick) | |
513 | ;; Insert any sub-topics. | |
514 | (while topicl | |
515 | (incf unread | |
516 | (gnus-topic-prepare-topic | |
23f87bed MB |
517 | (pop topicl) (1+ level) list-level predicate |
518 | (not visiblep) lowest regexp))) | |
eec82323 LMI |
519 | (setq end (point)) |
520 | (goto-char beg) | |
521 | ;; Insert all the groups that belong in this topic. | |
522 | (while (setq entry (pop entries)) | |
23f87bed MB |
523 | (when (if (stringp entry) |
524 | (gnus-group-prepare-logic | |
525 | entry | |
526 | (and | |
527 | (or (not gnus-group-listed-groups) | |
528 | (if (< list-level gnus-level-zombie) nil | |
529 | (let ((entry-level | |
530 | (if (member entry gnus-zombie-list) | |
531 | gnus-level-zombie gnus-level-killed))) | |
532 | (and (<= entry-level list-level) | |
533 | (>= entry-level lowest))))) | |
534 | (cond | |
535 | ((stringp regexp) | |
536 | (string-match regexp entry)) | |
537 | ((functionp regexp) | |
538 | (funcall regexp entry)) | |
539 | ((null regexp) t) | |
540 | (t nil)))) | |
541 | (setq info (nth 2 entry)) | |
542 | (gnus-group-prepare-logic | |
543 | (gnus-info-group info) | |
544 | (and (or (not gnus-group-listed-groups) | |
545 | (let ((entry-level (gnus-info-level info))) | |
546 | (and (<= entry-level list-level) | |
547 | (>= entry-level lowest)))) | |
548 | (or (not (functionp predicate)) | |
549 | (funcall predicate info)) | |
550 | (or (not (stringp regexp)) | |
551 | (string-match regexp (gnus-info-group info)))))) | |
552 | (when visiblep | |
553 | (if (stringp entry) | |
554 | ;; Dead groups. | |
555 | (gnus-group-insert-group-line | |
556 | entry (if (member entry gnus-zombie-list) | |
557 | gnus-level-zombie gnus-level-killed) | |
558 | nil (- (1+ (cdr (setq active (gnus-active entry)))) | |
559 | (car active)) | |
560 | nil) | |
561 | ;; Living groups. | |
562 | (when (setq info (nth 2 entry)) | |
563 | (gnus-group-insert-group-line | |
564 | (gnus-info-group info) | |
565 | (gnus-info-level info) (gnus-info-marks info) | |
566 | (car entry) (gnus-info-method info))))) | |
567 | (when (and (listp entry) | |
568 | (numberp (car entry))) | |
569 | (incf unread (car entry))) | |
570 | (when (listp entry) | |
571 | (setq tick t)))) | |
eec82323 LMI |
572 | (goto-char beg) |
573 | ;; Insert the topic line. | |
574 | (when (and (not silent) | |
575 | (or gnus-topic-display-empty-topics ;We want empty topics | |
576 | (not (zerop unread)) ;Non-empty | |
577 | tick ;Ticked articles | |
e4920bc9 | 578 | (/= point-max (point-max)))) ;Inactive groups |
eec82323 LMI |
579 | (gnus-extent-start-open (point)) |
580 | (gnus-topic-insert-topic-line | |
581 | (car type) visiblep | |
582 | (not (eq (nth 2 type) 'hidden)) | |
583 | level all-entries unread)) | |
6748645f | 584 | (gnus-topic-update-unreads (car type) unread) |
85fd8002 RS |
585 | (when gnus-group-update-tool-bar |
586 | (gnus-put-text-property beg end 'point-entered | |
587 | 'gnus-tool-bar-update) | |
588 | (gnus-put-text-property beg end 'point-left | |
589 | 'gnus-tool-bar-update)) | |
eec82323 LMI |
590 | (goto-char end) |
591 | unread)) | |
592 | ||
593 | (defun gnus-topic-remove-topic (&optional insert total-remove hide in-level) | |
594 | "Remove the current topic." | |
595 | (let ((topic (gnus-group-topic-name)) | |
596 | (level (gnus-group-topic-level)) | |
597 | (beg (progn (beginning-of-line) (point))) | |
598 | buffer-read-only) | |
599 | (when topic | |
600 | (while (and (zerop (forward-line 1)) | |
601 | (> (or (gnus-group-topic-level) (1+ level)) level))) | |
602 | (delete-region beg (point)) | |
603 | ;; Do the change in this rather odd manner because it has been | |
604 | ;; reported that some topics share parts of some lists, for some | |
605 | ;; reason. I have been unable to determine why this is the | |
606 | ;; case, but this hack seems to take care of things. | |
607 | (let ((data (cadr (gnus-topic-find-topology topic)))) | |
608 | (setcdr data | |
609 | (list (if insert 'visible 'invisible) | |
16409b0b | 610 | (caddr data) |
eec82323 LMI |
611 | (cadddr data)))) |
612 | (if total-remove | |
613 | (setq gnus-topic-alist | |
614 | (delq (assoc topic gnus-topic-alist) gnus-topic-alist)) | |
615 | (gnus-topic-insert-topic topic in-level))))) | |
616 | ||
617 | (defun gnus-topic-insert-topic (topic &optional level) | |
618 | "Insert TOPIC." | |
619 | (gnus-group-prepare-topics | |
620 | (car gnus-group-list-mode) (cdr gnus-group-list-mode) | |
621 | nil nil topic level)) | |
622 | ||
16409b0b | 623 | (defun gnus-topic-fold (&optional insert topic) |
eec82323 | 624 | "Remove/insert the current topic." |
16409b0b | 625 | (let ((topic (or topic (gnus-group-topic-name)))) |
eec82323 LMI |
626 | (when topic |
627 | (save-excursion | |
628 | (if (not (gnus-group-active-topic-p)) | |
629 | (gnus-topic-remove-topic | |
630 | (or insert (not (gnus-topic-visible-p)))) | |
631 | (let ((gnus-topic-topology gnus-topic-active-topology) | |
632 | (gnus-topic-alist gnus-topic-active-alist) | |
633 | (gnus-group-list-mode (cons 5 t))) | |
634 | (gnus-topic-remove-topic | |
635 | (or insert (not (gnus-topic-visible-p))) nil nil 9) | |
636 | (gnus-topic-enter-dribble))))))) | |
637 | ||
638 | (defun gnus-topic-insert-topic-line (name visiblep shownp level entries | |
639 | &optional unread) | |
640 | (let* ((visible (if visiblep "" "...")) | |
641 | (indentation (make-string (* gnus-topic-indent-level level) ? )) | |
642 | (total-number-of-articles unread) | |
643 | (number-of-groups (length entries)) | |
6748645f LMI |
644 | (active-topic (eq gnus-topic-alist gnus-topic-active-alist)) |
645 | gnus-tmp-header) | |
646 | (gnus-topic-update-unreads name unread) | |
eec82323 LMI |
647 | (beginning-of-line) |
648 | ;; Insert the text. | |
16409b0b GM |
649 | (if shownp |
650 | (gnus-add-text-properties | |
651 | (point) | |
652 | (prog1 (1+ (point)) | |
653 | (eval gnus-topic-line-format-spec)) | |
654 | (list 'gnus-topic (intern name) | |
655 | 'gnus-topic-level level | |
656 | 'gnus-topic-unread unread | |
657 | 'gnus-active active-topic | |
658 | 'gnus-topic-visible visiblep))))) | |
eec82323 | 659 | |
6748645f LMI |
660 | (defun gnus-topic-update-unreads (topic unreads) |
661 | (setq gnus-topic-unreads (delq (assoc topic gnus-topic-unreads) | |
662 | gnus-topic-unreads)) | |
663 | (push (cons topic unreads) gnus-topic-unreads)) | |
664 | ||
eec82323 LMI |
665 | (defun gnus-topic-update-topics-containing-group (group) |
666 | "Update all topics that have GROUP as a member." | |
667 | (when (and (eq major-mode 'gnus-group-mode) | |
668 | gnus-topic-mode) | |
669 | (save-excursion | |
670 | (let ((alist gnus-topic-alist)) | |
671 | ;; This is probably not entirely correct. If a topic | |
672 | ;; isn't shown, then it's not updated. But the updating | |
673 | ;; should be performed in any case, since the topic's | |
674 | ;; parent should be updated. Pfft. | |
675 | (while alist | |
676 | (when (and (member group (cdar alist)) | |
677 | (gnus-topic-goto-topic (caar alist))) | |
678 | (gnus-topic-update-topic-line (caar alist))) | |
679 | (pop alist)))))) | |
680 | ||
681 | (defun gnus-topic-update-topic () | |
682 | "Update all parent topics to the current group." | |
683 | (when (and (eq major-mode 'gnus-group-mode) | |
684 | gnus-topic-mode) | |
685 | (let ((group (gnus-group-group-name)) | |
23f87bed | 686 | (m (point-marker)) |
eec82323 LMI |
687 | (buffer-read-only nil)) |
688 | (when (and group | |
689 | (gnus-get-info group) | |
690 | (gnus-topic-goto-topic (gnus-current-topic))) | |
691 | (gnus-topic-update-topic-line (gnus-group-topic-name)) | |
a8151ef7 LMI |
692 | (goto-char m) |
693 | (set-marker m nil) | |
eec82323 LMI |
694 | (gnus-group-position-point))))) |
695 | ||
696 | (defun gnus-topic-goto-missing-group (group) | |
697 | "Place point where GROUP is supposed to be inserted." | |
698 | (let* ((topic (gnus-group-topic group)) | |
699 | (groups (cdr (assoc topic gnus-topic-alist))) | |
700 | (g (cdr (member group groups))) | |
16409b0b GM |
701 | (unfound t) |
702 | entry) | |
eec82323 | 703 | ;; Try to jump to a visible group. |
23f87bed MB |
704 | (while (and g |
705 | (not (gnus-group-goto-group (car g) t))) | |
eec82323 LMI |
706 | (pop g)) |
707 | ;; It wasn't visible, so we try to see where to insert it. | |
708 | (when (not g) | |
709 | (setq g (cdr (member group (reverse groups)))) | |
710 | (while (and g unfound) | |
711 | (when (gnus-group-goto-group (pop g) t) | |
712 | (forward-line 1) | |
713 | (setq unfound nil))) | |
714 | (when (and unfound | |
715 | topic | |
716 | (not (gnus-topic-goto-missing-topic topic))) | |
23f87bed MB |
717 | (gnus-topic-display-missing-topic topic))))) |
718 | ||
719 | (defun gnus-topic-display-missing-topic (topic) | |
720 | "Insert topic lines recursively for missing topics." | |
721 | (let ((parent (gnus-topic-find-topology | |
722 | (gnus-topic-parent-topic topic)))) | |
723 | (when (and parent | |
724 | (not (gnus-topic-goto-missing-topic (caadr parent)))) | |
725 | (gnus-topic-display-missing-topic (caadr parent)))) | |
726 | (gnus-topic-goto-missing-topic topic) | |
01c52d31 MB |
727 | ;; Skip past all groups in the topic we're in. |
728 | (while (gnus-group-group-name) | |
729 | (forward-line 1)) | |
23f87bed MB |
730 | (let* ((top (gnus-topic-find-topology topic)) |
731 | (children (cddr top)) | |
732 | (type (cadr top)) | |
733 | (unread 0) | |
734 | (entries (gnus-topic-find-groups | |
735 | (car type) (car gnus-group-list-mode) | |
736 | (cdr gnus-group-list-mode))) | |
737 | entry) | |
738 | (while children | |
739 | (incf unread (gnus-topic-unread (caar (pop children))))) | |
740 | (while (setq entry (pop entries)) | |
741 | (when (numberp (car entry)) | |
742 | (incf unread (car entry)))) | |
743 | (gnus-topic-insert-topic-line | |
744 | topic t t (car (gnus-topic-find-topology topic)) nil unread))) | |
eec82323 LMI |
745 | |
746 | (defun gnus-topic-goto-missing-topic (topic) | |
747 | (if (gnus-topic-goto-topic topic) | |
748 | (forward-line 1) | |
749 | ;; Topic not displayed. | |
750 | (let* ((top (gnus-topic-find-topology | |
751 | (gnus-topic-parent-topic topic))) | |
752 | (tp (reverse (cddr top)))) | |
16409b0b GM |
753 | (if (not top) |
754 | (gnus-topic-insert-topic-line | |
755 | topic t t (car (gnus-topic-find-topology topic)) nil 0) | |
756 | (while (not (equal (caaar tp) topic)) | |
757 | (setq tp (cdr tp))) | |
758 | (pop tp) | |
759 | (while (and tp | |
760 | (not (gnus-topic-goto-topic (caaar tp)))) | |
761 | (pop tp)) | |
762 | (if tp | |
763 | (gnus-topic-forward-topic 1) | |
764 | (gnus-topic-goto-missing-topic (caadr top))))) | |
eec82323 LMI |
765 | nil)) |
766 | ||
767 | (defun gnus-topic-update-topic-line (topic-name &optional reads) | |
768 | (let* ((top (gnus-topic-find-topology topic-name)) | |
769 | (type (cadr top)) | |
770 | (children (cddr top)) | |
771 | (entries (gnus-topic-find-groups | |
772 | (car type) (car gnus-group-list-mode) | |
773 | (cdr gnus-group-list-mode))) | |
774 | (parent (gnus-topic-parent-topic topic-name)) | |
775 | (all-entries entries) | |
776 | (unread 0) | |
6748645f | 777 | old-unread entry new-unread) |
eec82323 LMI |
778 | (when (gnus-topic-goto-topic (car type)) |
779 | ;; Tally all the groups that belong in this topic. | |
780 | (if reads | |
781 | (setq unread (- (gnus-group-topic-unread) reads)) | |
782 | (while children | |
783 | (incf unread (gnus-topic-unread (caar (pop children))))) | |
784 | (while (setq entry (pop entries)) | |
785 | (when (numberp (car entry)) | |
786 | (incf unread (car entry))))) | |
787 | (setq old-unread (gnus-group-topic-unread)) | |
788 | ;; Insert the topic line. | |
789 | (gnus-topic-insert-topic-line | |
790 | (car type) (gnus-topic-visible-p) | |
791 | (not (eq (nth 2 type) 'hidden)) | |
792 | (gnus-group-topic-level) all-entries unread) | |
6748645f LMI |
793 | (gnus-delete-line) |
794 | (forward-line -1) | |
795 | (setq new-unread (gnus-group-topic-unread))) | |
eec82323 LMI |
796 | (when parent |
797 | (forward-line -1) | |
798 | (gnus-topic-update-topic-line | |
6748645f LMI |
799 | parent |
800 | (- (or old-unread 0) (or new-unread 0)))) | |
eec82323 LMI |
801 | unread)) |
802 | ||
803 | (defun gnus-topic-group-indentation () | |
804 | (make-string | |
805 | (* gnus-topic-indent-level | |
806 | (or (save-excursion | |
807 | (forward-line -1) | |
808 | (gnus-topic-goto-topic (gnus-current-topic)) | |
809 | (gnus-group-topic-level)) | |
810 | 0)) | |
811 | ? )) | |
812 | ||
813 | ;;; Initialization | |
814 | ||
815 | (gnus-add-shutdown 'gnus-topic-close 'gnus) | |
816 | ||
817 | (defun gnus-topic-close () | |
818 | (setq gnus-topic-active-topology nil | |
819 | gnus-topic-active-alist nil | |
820 | gnus-topic-killed-topics nil | |
eec82323 LMI |
821 | gnus-topology-checked-p nil)) |
822 | ||
823 | (defun gnus-topic-check-topology () | |
824 | ;; The first time we set the topology to whatever we have | |
825 | ;; gotten here, which can be rather random. | |
826 | (unless gnus-topic-alist | |
827 | (gnus-topic-init-alist)) | |
828 | ||
829 | (setq gnus-topology-checked-p t) | |
830 | ;; Go through the topic alist and make sure that all topics | |
831 | ;; are in the topic topology. | |
832 | (let ((topics (gnus-topic-list)) | |
833 | (alist gnus-topic-alist) | |
834 | changed) | |
835 | (while alist | |
836 | (unless (member (caar alist) topics) | |
837 | (nconc gnus-topic-topology | |
838 | (list (list (list (caar alist) 'visible)))) | |
839 | (setq changed t)) | |
840 | (setq alist (cdr alist))) | |
841 | (when changed | |
842 | (gnus-topic-enter-dribble)) | |
843 | ;; Conversely, go through the topology and make sure that all | |
844 | ;; topologies have alists. | |
845 | (while topics | |
846 | (unless (assoc (car topics) gnus-topic-alist) | |
847 | (push (list (car topics)) gnus-topic-alist)) | |
848 | (pop topics))) | |
849 | ;; Go through all living groups and make sure that | |
850 | ;; they belong to some topic. | |
01c52d31 | 851 | (let* ((tgroups (apply 'append (mapcar 'cdr gnus-topic-alist))) |
a8151ef7 | 852 | (entry (last (assoc (caar gnus-topic-topology) gnus-topic-alist))) |
eec82323 LMI |
853 | (newsrc (cdr gnus-newsrc-alist)) |
854 | group) | |
855 | (while newsrc | |
856 | (unless (member (setq group (gnus-info-group (pop newsrc))) tgroups) | |
a8151ef7 LMI |
857 | (setcdr entry (list group)) |
858 | (setq entry (cdr entry))))) | |
eec82323 LMI |
859 | ;; Go through all topics and make sure they contain only living groups. |
860 | (let ((alist gnus-topic-alist) | |
861 | topic) | |
862 | (while (setq topic (pop alist)) | |
863 | (while (cdr topic) | |
a8151ef7 | 864 | (if (and (cadr topic) |
01c52d31 | 865 | (gnus-group-entry (cadr topic))) |
eec82323 LMI |
866 | (setq topic (cdr topic)) |
867 | (setcdr topic (cddr topic))))))) | |
868 | ||
869 | (defun gnus-topic-init-alist () | |
870 | "Initialize the topic structures." | |
871 | (setq gnus-topic-topology | |
872 | (cons (list "Gnus" 'visible) | |
873 | (mapcar (lambda (topic) | |
874 | (list (list (car topic) 'visible))) | |
875 | '(("misc"))))) | |
876 | (setq gnus-topic-alist | |
877 | (list (cons "misc" | |
878 | (mapcar (lambda (info) (gnus-info-group info)) | |
879 | (cdr gnus-newsrc-alist))) | |
880 | (list "Gnus"))) | |
881 | (gnus-topic-enter-dribble)) | |
882 | ||
883 | ;;; Maintenance | |
884 | ||
885 | (defun gnus-topic-clean-alist () | |
886 | "Remove bogus groups from the topic alist." | |
887 | (let ((topic-alist gnus-topic-alist) | |
888 | result topic) | |
889 | (unless gnus-killed-hashtb | |
890 | (gnus-make-hashtable-from-killed)) | |
891 | (while (setq topic (pop topic-alist)) | |
892 | (let ((topic-name (pop topic)) | |
893 | group filtered-topic) | |
894 | (while (setq group (pop topic)) | |
01c52d31 | 895 | (when (and (or (gnus-active group) |
eec82323 LMI |
896 | (gnus-info-method (gnus-get-info group))) |
897 | (not (gnus-gethash group gnus-killed-hashtb))) | |
898 | (push group filtered-topic))) | |
899 | (push (cons topic-name (nreverse filtered-topic)) result))) | |
900 | (setq gnus-topic-alist (nreverse result)))) | |
901 | ||
a8151ef7 | 902 | (defun gnus-topic-change-level (group level oldlevel &optional previous) |
eec82323 | 903 | "Run when changing levels to enter/remove groups from topics." |
20a673b2 | 904 | (with-current-buffer gnus-group-buffer |
6748645f LMI |
905 | (let ((buffer-read-only nil)) |
906 | (unless gnus-topic-inhibit-change-level | |
907 | (gnus-group-goto-group (or (car (nth 2 previous)) group)) | |
908 | (when (and gnus-topic-mode | |
909 | gnus-topic-alist | |
910 | (not gnus-topic-inhibit-change-level)) | |
911 | ;; Remove the group from the topics. | |
912 | (if (and (< oldlevel gnus-level-zombie) | |
913 | (>= level gnus-level-zombie)) | |
914 | (let ((alist gnus-topic-alist)) | |
915 | (while (gnus-group-goto-group group) | |
916 | (gnus-delete-line)) | |
917 | (while alist | |
918 | (when (member group (car alist)) | |
919 | (setcdr (car alist) (delete group (cdar alist)))) | |
920 | (pop alist))) | |
921 | ;; If the group is subscribed we enter it into the topics. | |
922 | (when (and (< level gnus-level-zombie) | |
923 | (>= oldlevel gnus-level-zombie)) | |
924 | (let* ((prev (gnus-group-group-name)) | |
925 | (gnus-topic-inhibit-change-level t) | |
926 | (gnus-group-indentation | |
927 | (make-string | |
928 | (* gnus-topic-indent-level | |
929 | (or (save-excursion | |
930 | (gnus-topic-goto-topic (gnus-current-topic)) | |
931 | (gnus-group-topic-level)) | |
932 | 0)) | |
933 | ? )) | |
934 | (yanked (list group)) | |
935 | alist talist end) | |
23f87bed MB |
936 | ;; Then we enter the yanked groups into the topics |
937 | ;; they belong to. | |
6748645f LMI |
938 | (when (setq alist (assoc (save-excursion |
939 | (forward-line -1) | |
940 | (or | |
941 | (gnus-current-topic) | |
942 | (caar gnus-topic-topology))) | |
943 | gnus-topic-alist)) | |
944 | (setq talist alist) | |
945 | (when (stringp yanked) | |
946 | (setq yanked (list yanked))) | |
947 | (if (not prev) | |
948 | (nconc alist yanked) | |
949 | (if (not (cdr alist)) | |
950 | (setcdr alist (nconc yanked (cdr alist))) | |
951 | (while (and (not end) (cdr alist)) | |
952 | (when (equal (cadr alist) prev) | |
953 | (setcdr alist (nconc yanked (cdr alist))) | |
954 | (setq end t)) | |
955 | (setq alist (cdr alist))) | |
956 | (unless end | |
957 | (nconc talist yanked)))))) | |
958 | (gnus-topic-update-topic)))))))) | |
eec82323 LMI |
959 | |
960 | (defun gnus-topic-goto-next-group (group props) | |
961 | "Go to group or the next group after group." | |
962 | (if (not group) | |
963 | (if (not (memq 'gnus-topic props)) | |
964 | (goto-char (point-max)) | |
7e67562f G |
965 | (let ((topic (symbol-name (cadr (memq 'gnus-topic props))))) |
966 | (or (gnus-topic-goto-topic topic) | |
967 | (gnus-topic-goto-topic (gnus-topic-next-topic topic))))) | |
eec82323 LMI |
968 | (if (gnus-group-goto-group group) |
969 | t | |
970 | ;; The group is no longer visible. | |
971 | (let* ((list (assoc (gnus-group-topic group) gnus-topic-alist)) | |
7e67562f G |
972 | (topic-visible (save-excursion (gnus-topic-goto-topic (car list)))) |
973 | (after (and topic-visible (cdr (member group (cdr list)))))) | |
eec82323 LMI |
974 | ;; First try to put point on a group after the current one. |
975 | (while (and after | |
976 | (not (gnus-group-goto-group (car after)))) | |
977 | (setq after (cdr after))) | |
978 | ;; Then try to put point on a group before point. | |
979 | (unless after | |
980 | (setq after (cdr (member group (reverse (cdr list))))) | |
981 | (while (and after | |
982 | (not (gnus-group-goto-group (car after)))) | |
983 | (setq after (cdr after)))) | |
984 | ;; Finally, just put point on the topic. | |
985 | (if (not (car list)) | |
986 | (goto-char (point-min)) | |
987 | (unless after | |
7e67562f G |
988 | (if topic-visible |
989 | (gnus-goto-char topic-visible) | |
990 | (gnus-topic-goto-topic (gnus-topic-next-topic (car list)))) | |
eec82323 LMI |
991 | (setq after nil))) |
992 | t)))) | |
993 | ||
994 | ;;; Topic-active functions | |
995 | ||
996 | (defun gnus-topic-grok-active (&optional force) | |
997 | "Parse all active groups and create topic structures for them." | |
998 | ;; First we make sure that we have really read the active file. | |
999 | (when (or force | |
1000 | (not gnus-topic-active-alist)) | |
1001 | (let (groups) | |
1002 | ;; Get a list of all groups available. | |
1003 | (mapatoms (lambda (g) (when (symbol-value g) | |
1004 | (push (symbol-name g) groups))) | |
1005 | gnus-active-hashtb) | |
1006 | (setq groups (sort groups 'string<)) | |
1007 | ;; Init the variables. | |
1008 | (setq gnus-topic-active-topology (list (list "" 'visible))) | |
1009 | (setq gnus-topic-active-alist nil) | |
1010 | ;; Descend the top-level hierarchy. | |
1011 | (gnus-topic-grok-active-1 gnus-topic-active-topology groups) | |
1012 | ;; Set the top-level topic names to something nice. | |
1013 | (setcar (car gnus-topic-active-topology) "Gnus active") | |
1014 | (setcar (car gnus-topic-active-alist) "Gnus active")))) | |
1015 | ||
1016 | (defun gnus-topic-grok-active-1 (topology groups) | |
1017 | (let* ((name (caar topology)) | |
1018 | (prefix (concat "^" (regexp-quote name))) | |
1019 | tgroups ntopology group) | |
1020 | (while (and groups | |
1021 | (string-match prefix (setq group (car groups)))) | |
1022 | (if (not (string-match "\\." group (match-end 0))) | |
1023 | ;; There are no further hierarchies here, so we just | |
1024 | ;; enter this group into the list belonging to this | |
1025 | ;; topic. | |
1026 | (push (pop groups) tgroups) | |
1027 | ;; New sub-hierarchy, so we add it to the topology. | |
1028 | (nconc topology (list (setq ntopology | |
1029 | (list (list (substring | |
1030 | group 0 (match-end 0)) | |
1031 | 'invisible))))) | |
1032 | ;; Descend the hierarchy. | |
1033 | (setq groups (gnus-topic-grok-active-1 ntopology groups)))) | |
1034 | ;; We remove the trailing "." from the topic name. | |
1035 | (setq name | |
1036 | (if (string-match "\\.$" name) | |
1037 | (substring name 0 (match-beginning 0)) | |
1038 | name)) | |
1039 | ;; Add this topic and its groups to the topic alist. | |
1040 | (push (cons name (nreverse tgroups)) gnus-topic-active-alist) | |
1041 | (setcar (car topology) name) | |
1042 | ;; We return the rest of the groups that didn't belong | |
1043 | ;; to this topic. | |
1044 | groups)) | |
1045 | ||
1046 | ;;; Topic mode, commands and keymap. | |
1047 | ||
1048 | (defvar gnus-topic-mode-map nil) | |
1049 | (defvar gnus-group-topic-map nil) | |
1050 | ||
1051 | (unless gnus-topic-mode-map | |
1052 | (setq gnus-topic-mode-map (make-sparse-keymap)) | |
1053 | ||
1054 | ;; Override certain group mode keys. | |
1055 | (gnus-define-keys gnus-topic-mode-map | |
1056 | "=" gnus-topic-select-group | |
1057 | "\r" gnus-topic-select-group | |
1058 | " " gnus-topic-read-group | |
16409b0b | 1059 | "\C-c\C-x" gnus-topic-expire-articles |
23f87bed | 1060 | "c" gnus-topic-catchup-articles |
eec82323 LMI |
1061 | "\C-k" gnus-topic-kill-group |
1062 | "\C-y" gnus-topic-yank-group | |
1063 | "\M-g" gnus-topic-get-new-news-this-topic | |
1064 | "AT" gnus-topic-list-active | |
1065 | "Gp" gnus-topic-edit-parameters | |
1066 | "#" gnus-topic-mark-topic | |
1067 | "\M-#" gnus-topic-unmark-topic | |
6748645f LMI |
1068 | [tab] gnus-topic-indent |
1069 | [(meta tab)] gnus-topic-unindent | |
1070 | "\C-i" gnus-topic-indent | |
1071 | "\M-\C-i" gnus-topic-unindent | |
eec82323 LMI |
1072 | gnus-mouse-2 gnus-mouse-pick-topic) |
1073 | ||
1074 | ;; Define a new submap. | |
1075 | (gnus-define-keys (gnus-group-topic-map "T" gnus-group-mode-map) | |
1076 | "#" gnus-topic-mark-topic | |
1077 | "\M-#" gnus-topic-unmark-topic | |
1078 | "n" gnus-topic-create-topic | |
1079 | "m" gnus-topic-move-group | |
1080 | "D" gnus-topic-remove-group | |
1081 | "c" gnus-topic-copy-group | |
1082 | "h" gnus-topic-hide-topic | |
1083 | "s" gnus-topic-show-topic | |
16409b0b | 1084 | "j" gnus-topic-jump-to-topic |
eec82323 LMI |
1085 | "M" gnus-topic-move-matching |
1086 | "C" gnus-topic-copy-matching | |
23f87bed MB |
1087 | "\M-p" gnus-topic-goto-previous-topic |
1088 | "\M-n" gnus-topic-goto-next-topic | |
eec82323 LMI |
1089 | "\C-i" gnus-topic-indent |
1090 | [tab] gnus-topic-indent | |
1091 | "r" gnus-topic-rename | |
a8151ef7 LMI |
1092 | "\177" gnus-topic-delete |
1093 | [delete] gnus-topic-delete | |
6748645f | 1094 | "H" gnus-topic-toggle-display-empty-topics) |
eec82323 LMI |
1095 | |
1096 | (gnus-define-keys (gnus-topic-sort-map "S" gnus-group-topic-map) | |
1097 | "s" gnus-topic-sort-groups | |
1098 | "a" gnus-topic-sort-groups-by-alphabet | |
1099 | "u" gnus-topic-sort-groups-by-unread | |
1100 | "l" gnus-topic-sort-groups-by-level | |
23f87bed | 1101 | "e" gnus-topic-sort-groups-by-server |
eec82323 LMI |
1102 | "v" gnus-topic-sort-groups-by-score |
1103 | "r" gnus-topic-sort-groups-by-rank | |
1104 | "m" gnus-topic-sort-groups-by-method)) | |
1105 | ||
1106 | (defun gnus-topic-make-menu-bar () | |
1107 | (unless (boundp 'gnus-topic-menu) | |
1108 | (easy-menu-define | |
1109 | gnus-topic-menu gnus-topic-mode-map "" | |
1110 | '("Topics" | |
1111 | ["Toggle topics" gnus-topic-mode t] | |
1112 | ("Groups" | |
23f87bed MB |
1113 | ["Copy..." gnus-topic-copy-group t] |
1114 | ["Move..." gnus-topic-move-group t] | |
eec82323 | 1115 | ["Remove" gnus-topic-remove-group t] |
23f87bed MB |
1116 | ["Copy matching..." gnus-topic-copy-matching t] |
1117 | ["Move matching..." gnus-topic-move-matching t]) | |
eec82323 | 1118 | ("Topics" |
23f87bed | 1119 | ["Goto..." gnus-topic-jump-to-topic t] |
eec82323 LMI |
1120 | ["Show" gnus-topic-show-topic t] |
1121 | ["Hide" gnus-topic-hide-topic t] | |
1122 | ["Delete" gnus-topic-delete t] | |
23f87bed MB |
1123 | ["Rename..." gnus-topic-rename t] |
1124 | ["Create..." gnus-topic-create-topic t] | |
eec82323 | 1125 | ["Mark" gnus-topic-mark-topic t] |
a8151ef7 | 1126 | ["Indent" gnus-topic-indent t] |
16409b0b | 1127 | ["Sort" gnus-topic-sort-topics t] |
23f87bed MB |
1128 | ["Previous topic" gnus-topic-goto-previous-topic t] |
1129 | ["Next topic" gnus-topic-goto-next-topic t] | |
a8151ef7 LMI |
1130 | ["Toggle hide empty" gnus-topic-toggle-display-empty-topics t] |
1131 | ["Edit parameters" gnus-topic-edit-parameters t]) | |
eec82323 LMI |
1132 | ["List active" gnus-topic-list-active t])))) |
1133 | ||
1134 | (defun gnus-topic-mode (&optional arg redisplay) | |
1135 | "Minor mode for topicsifying Gnus group buffers." | |
bbf52f1e | 1136 | ;; FIXME: Use define-minor-mode. |
eec82323 LMI |
1137 | (interactive (list current-prefix-arg t)) |
1138 | (when (eq major-mode 'gnus-group-mode) | |
1139 | (make-local-variable 'gnus-topic-mode) | |
1140 | (setq gnus-topic-mode | |
1141 | (if (null arg) (not gnus-topic-mode) | |
1142 | (> (prefix-numeric-value arg) 0))) | |
1143 | ;; Infest Gnus with topics. | |
16409b0b | 1144 | (if (not gnus-topic-mode) |
23f87bed | 1145 | (setq gnus-goto-missing-group-function nil) |
eec82323 LMI |
1146 | (when (gnus-visual-p 'topic-menu 'menu) |
1147 | (gnus-topic-make-menu-bar)) | |
6748645f | 1148 | (gnus-set-format 'topic t) |
01c52d31 | 1149 | (add-minor-mode 'gnus-topic-mode " Topic" gnus-topic-mode-map) |
eec82323 LMI |
1150 | (add-hook 'gnus-group-catchup-group-hook 'gnus-topic-update-topic) |
1151 | (set (make-local-variable 'gnus-group-prepare-function) | |
1152 | 'gnus-group-prepare-topics) | |
1153 | (set (make-local-variable 'gnus-group-get-parameter-function) | |
1154 | 'gnus-group-topic-parameters) | |
1155 | (set (make-local-variable 'gnus-group-goto-next-group-function) | |
1156 | 'gnus-topic-goto-next-group) | |
1157 | (set (make-local-variable 'gnus-group-indentation-function) | |
1158 | 'gnus-topic-group-indentation) | |
1159 | (set (make-local-variable 'gnus-group-update-group-function) | |
1160 | 'gnus-topic-update-topics-containing-group) | |
1161 | (set (make-local-variable 'gnus-group-sort-alist-function) | |
1162 | 'gnus-group-sort-topic) | |
1163 | (setq gnus-group-change-level-function 'gnus-topic-change-level) | |
1164 | (setq gnus-goto-missing-group-function 'gnus-topic-goto-missing-group) | |
23f87bed MB |
1165 | (gnus-make-local-hook 'gnus-check-bogus-groups-hook) |
1166 | (add-hook 'gnus-check-bogus-groups-hook 'gnus-topic-clean-alist | |
1167 | nil 'local) | |
eec82323 LMI |
1168 | (setq gnus-topology-checked-p nil) |
1169 | ;; We check the topology. | |
1170 | (when gnus-newsrc-alist | |
1171 | (gnus-topic-check-topology)) | |
6748645f | 1172 | (gnus-run-hooks 'gnus-topic-mode-hook)) |
eec82323 LMI |
1173 | ;; Remove topic infestation. |
1174 | (unless gnus-topic-mode | |
1175 | (remove-hook 'gnus-summary-exit-hook 'gnus-topic-update-topic) | |
7cd26120 | 1176 | (setq gnus-group-change-level-function nil) |
eec82323 LMI |
1177 | (remove-hook 'gnus-check-bogus-groups-hook 'gnus-topic-clean-alist) |
1178 | (setq gnus-group-prepare-function 'gnus-group-prepare-flat) | |
1179 | (setq gnus-group-sort-alist-function 'gnus-group-sort-flat)) | |
1180 | (when redisplay | |
1181 | (gnus-group-list-groups)))) | |
1182 | ||
1183 | (defun gnus-topic-select-group (&optional all) | |
1184 | "Select this newsgroup. | |
1185 | No article is selected automatically. | |
23f87bed | 1186 | If the group is opened, just switch the summary buffer. |
eec82323 | 1187 | If ALL is non-nil, already read articles become readable. |
52bec650 MB |
1188 | |
1189 | If ALL is a positive number, fetch this number of the latest | |
1190 | articles in the group. If ALL is a negative number, fetch this | |
1191 | number of the earliest articles in the group. | |
eec82323 LMI |
1192 | |
1193 | If performed over a topic line, toggle folding the topic." | |
1194 | (interactive "P") | |
23f87bed MB |
1195 | (when (and (eobp) (not (gnus-group-group-name))) |
1196 | (forward-line -1)) | |
eec82323 LMI |
1197 | (if (gnus-group-topic-p) |
1198 | (let ((gnus-group-list-mode | |
1199 | (if all (cons (if (numberp all) all 7) t) gnus-group-list-mode))) | |
16409b0b GM |
1200 | (gnus-topic-fold all) |
1201 | (gnus-dribble-touch)) | |
eec82323 LMI |
1202 | (gnus-group-select-group all))) |
1203 | ||
1204 | (defun gnus-mouse-pick-topic (e) | |
1205 | "Select the group or topic under the mouse pointer." | |
1206 | (interactive "e") | |
1207 | (mouse-set-point e) | |
1208 | (gnus-topic-read-group nil)) | |
1209 | ||
16409b0b GM |
1210 | (defun gnus-topic-expire-articles (topic) |
1211 | "Expire articles in this topic or group." | |
1212 | (interactive (list (gnus-group-topic-name))) | |
1213 | (if (not topic) | |
1214 | (call-interactively 'gnus-group-expire-articles) | |
1215 | (save-excursion | |
1216 | (gnus-message 5 "Expiring groups in %s..." topic) | |
1217 | (let ((gnus-group-marked | |
1218 | (mapcar (lambda (entry) (car (nth 2 entry))) | |
23f87bed MB |
1219 | (gnus-topic-find-groups topic gnus-level-killed t |
1220 | nil t)))) | |
16409b0b GM |
1221 | (gnus-group-expire-articles nil)) |
1222 | (gnus-message 5 "Expiring groups in %s...done" topic)))) | |
1223 | ||
23f87bed MB |
1224 | (defun gnus-topic-catchup-articles (topic) |
1225 | "Catchup this topic or group. | |
1226 | Also see `gnus-group-catchup'." | |
1227 | (interactive (list (gnus-group-topic-name))) | |
1228 | (if (not topic) | |
1229 | (call-interactively 'gnus-group-catchup-current) | |
1230 | (save-excursion | |
1231 | (let* ((groups | |
1232 | (mapcar (lambda (entry) (car (nth 2 entry))) | |
1233 | (gnus-topic-find-groups topic gnus-level-killed t | |
1234 | nil t))) | |
1235 | (buffer-read-only nil) | |
1236 | (gnus-group-marked groups)) | |
1237 | (gnus-group-catchup-current) | |
1238 | (mapcar 'gnus-topic-update-topics-containing-group groups))))) | |
1239 | ||
eec82323 LMI |
1240 | (defun gnus-topic-read-group (&optional all no-article group) |
1241 | "Read news in this newsgroup. | |
1242 | If the prefix argument ALL is non-nil, already read articles become | |
52bec650 MB |
1243 | readable. |
1244 | ||
1245 | If ALL is a positive number, fetch this number of the latest | |
1246 | articles in the group. If ALL is a negative number, fetch this | |
1247 | number of the earliest articles in the group. | |
1248 | ||
1249 | If the optional argument NO-ARTICLE is non-nil, no article will | |
1250 | be auto-selected upon group entry. If GROUP is non-nil, fetch | |
1251 | that group. | |
eec82323 LMI |
1252 | |
1253 | If performed over a topic line, toggle folding the topic." | |
1254 | (interactive "P") | |
6ec07c5a LMI |
1255 | (when (and (eobp) (not (gnus-group-group-name))) |
1256 | (forward-line -1)) | |
eec82323 LMI |
1257 | (if (gnus-group-topic-p) |
1258 | (let ((gnus-group-list-mode | |
1259 | (if all (cons (if (numberp all) all 7) t) gnus-group-list-mode))) | |
1260 | (gnus-topic-fold all)) | |
1261 | (gnus-group-read-group all no-article group))) | |
1262 | ||
1263 | (defun gnus-topic-create-topic (topic parent &optional previous full-topic) | |
a8151ef7 LMI |
1264 | "Create a new TOPIC under PARENT. |
1265 | When used interactively, PARENT will be the topic under point." | |
eec82323 LMI |
1266 | (interactive |
1267 | (list | |
1268 | (read-string "New topic: ") | |
1269 | (gnus-current-topic))) | |
1270 | ;; Check whether this topic already exists. | |
1271 | (when (gnus-topic-find-topology topic) | |
1272 | (error "Topic already exists")) | |
1273 | (unless parent | |
1274 | (setq parent (caar gnus-topic-topology))) | |
1275 | (let ((top (cdr (gnus-topic-find-topology parent))) | |
84169620 | 1276 | (full-topic (or full-topic (list (list topic 'visible nil nil))))) |
eec82323 LMI |
1277 | (unless top |
1278 | (error "No such parent topic: %s" parent)) | |
1279 | (if previous | |
1280 | (progn | |
1281 | (while (and (cdr top) | |
1282 | (not (equal (caaadr top) previous))) | |
1283 | (setq top (cdr top))) | |
1284 | (setcdr top (cons full-topic (cdr top)))) | |
1285 | (nconc top (list full-topic))) | |
1286 | (unless (assoc topic gnus-topic-alist) | |
1287 | (push (list topic) gnus-topic-alist))) | |
1288 | (gnus-topic-enter-dribble) | |
1289 | (gnus-group-list-groups) | |
1290 | (gnus-topic-goto-topic topic)) | |
1291 | ||
a1506d29 JB |
1292 | ;; FIXME: |
1293 | ;; 1. When the marked groups are overlapped with the process | |
16409b0b | 1294 | ;; region, the behavior of move or remove is not right. |
a1506d29 | 1295 | ;; 2. Can't process on several marked groups with a same name, |
16409b0b GM |
1296 | ;; because gnus-group-marked only keeps one copy. |
1297 | ||
7e67562f G |
1298 | (defvar gnus-topic-history nil) |
1299 | ||
eec82323 LMI |
1300 | (defun gnus-topic-move-group (n topic &optional copyp) |
1301 | "Move the next N groups to TOPIC. | |
1302 | If COPYP, copy the groups instead." | |
1303 | (interactive | |
1304 | (list current-prefix-arg | |
229b59da | 1305 | (gnus-completing-read "Move to topic" (mapcar 'car gnus-topic-alist) t |
367f7f81 | 1306 | nil 'gnus-topic-history))) |
a1506d29 | 1307 | (let ((use-marked (and (not n) (not (gnus-region-active-p)) |
16409b0b GM |
1308 | gnus-group-marked t)) |
1309 | (groups (gnus-group-process-prefix n)) | |
eec82323 | 1310 | (topicl (assoc topic gnus-topic-alist)) |
eec82323 | 1311 | (start-topic (gnus-group-topic-name)) |
16409b0b | 1312 | (start-group (progn (forward-line 1) (gnus-group-group-name))) |
eec82323 | 1313 | entry) |
16409b0b GM |
1314 | (if (and (not groups) (not copyp) start-topic) |
1315 | (gnus-topic-move start-topic topic) | |
01c52d31 MB |
1316 | (dolist (g groups) |
1317 | (gnus-group-remove-mark g use-marked) | |
1318 | (when (and | |
1319 | (setq entry (assoc (gnus-current-topic) gnus-topic-alist)) | |
1320 | (not copyp)) | |
1321 | (setcdr entry (gnus-delete-first g (cdr entry)))) | |
1322 | (nconc topicl (list g))) | |
16409b0b GM |
1323 | (gnus-topic-enter-dribble) |
1324 | (if start-group | |
1325 | (gnus-group-goto-group start-group) | |
1326 | (gnus-topic-goto-topic start-topic)) | |
1327 | (gnus-group-list-groups)))) | |
eec82323 | 1328 | |
16409b0b | 1329 | (defun gnus-topic-remove-group (&optional n) |
eec82323 LMI |
1330 | "Remove the current group from the topic." |
1331 | (interactive "P") | |
a1506d29 | 1332 | (let ((use-marked (and (not n) (not (gnus-region-active-p)) |
16409b0b GM |
1333 | gnus-group-marked t)) |
1334 | (groups (gnus-group-process-prefix n))) | |
01c52d31 | 1335 | (mapc |
16409b0b GM |
1336 | (lambda (group) |
1337 | (gnus-group-remove-mark group use-marked) | |
1338 | (let ((topicl (assoc (gnus-current-topic) gnus-topic-alist)) | |
1339 | (buffer-read-only nil)) | |
1340 | (when (and topicl group) | |
1341 | (gnus-delete-line) | |
1342 | (gnus-delete-first group topicl)) | |
1343 | (gnus-topic-update-topic))) | |
1344 | groups) | |
1345 | (gnus-topic-enter-dribble) | |
1346 | (gnus-group-position-point))) | |
eec82323 LMI |
1347 | |
1348 | (defun gnus-topic-copy-group (n topic) | |
1349 | "Copy the current group to a topic." | |
1350 | (interactive | |
1351 | (list current-prefix-arg | |
367f7f81 LMI |
1352 | (gnus-completing-read |
1353 | "Copy to topic" (mapcar 'car gnus-topic-alist) t))) | |
eec82323 LMI |
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 | |
229b59da G |
1446 | (gnus-completing-read "Show topic" |
1447 | (mapcar 'car gnus-topic-alist) t)))) | |
16409b0b GM |
1448 | (setcar (cddr (cadr topic)) nil) |
1449 | (setcar (cdr (cadr topic)) 'visible) | |
1450 | (gnus-group-list-groups))))) | |
eec82323 | 1451 | |
23f87bed | 1452 | (defun gnus-topic-mark-topic (topic &optional unmark non-recursive) |
8b93df01 | 1453 | "Mark all groups in the TOPIC with the process mark. |
23f87bed | 1454 | If NON-RECURSIVE (which is the prefix) is t, don't mark its subtopics." |
8b93df01 DL |
1455 | (interactive (list (gnus-group-topic-name) |
1456 | nil | |
1457 | (and current-prefix-arg t))) | |
eec82323 LMI |
1458 | (if (not topic) |
1459 | (call-interactively 'gnus-group-mark-group) | |
1460 | (save-excursion | |
a1506d29 | 1461 | (let ((groups (gnus-topic-find-groups topic gnus-level-killed t nil |
23f87bed | 1462 | (not non-recursive)))) |
eec82323 LMI |
1463 | (while groups |
1464 | (funcall (if unmark 'gnus-group-remove-mark 'gnus-group-set-mark) | |
1465 | (gnus-info-group (nth 2 (pop groups))))))))) | |
1466 | ||
23f87bed | 1467 | (defun gnus-topic-unmark-topic (topic &optional dummy non-recursive) |
8b93df01 | 1468 | "Remove the process mark from all groups in the TOPIC. |
23f87bed | 1469 | If NON-RECURSIVE (which is the prefix) is t, don't unmark its subtopics." |
8b93df01 DL |
1470 | (interactive (list (gnus-group-topic-name) |
1471 | nil | |
1472 | (and current-prefix-arg t))) | |
eec82323 LMI |
1473 | (if (not topic) |
1474 | (call-interactively 'gnus-group-unmark-group) | |
23f87bed | 1475 | (gnus-topic-mark-topic topic t non-recursive))) |
eec82323 LMI |
1476 | |
1477 | (defun gnus-topic-get-new-news-this-topic (&optional n) | |
1478 | "Check for new news in the current topic." | |
1479 | (interactive "P") | |
1480 | (if (not (gnus-group-topic-p)) | |
1481 | (gnus-group-get-new-news-this-group n) | |
23f87bed MB |
1482 | (let* ((topic (gnus-group-topic-name)) |
1483 | (data (cadr (gnus-topic-find-topology topic)))) | |
1484 | (save-excursion | |
1485 | (gnus-topic-mark-topic topic nil (and n t)) | |
1486 | (gnus-group-get-new-news-this-group)) | |
1487 | (gnus-topic-remove-topic (eq 'visible (cadr data)))))) | |
eec82323 LMI |
1488 | |
1489 | (defun gnus-topic-move-matching (regexp topic &optional copyp) | |
1490 | "Move all groups that match REGEXP to some topic." | |
1491 | (interactive | |
1492 | (let (topic) | |
1493 | (nreverse | |
1494 | (list | |
229b59da G |
1495 | (setq topic (gnus-completing-read "Move to topic" |
1496 | (mapcar 'car gnus-topic-alist) t)) | |
eec82323 LMI |
1497 | (read-string (format "Move to %s (regexp): " topic)))))) |
1498 | (gnus-group-mark-regexp regexp) | |
1499 | (gnus-topic-move-group nil topic copyp)) | |
1500 | ||
1501 | (defun gnus-topic-copy-matching (regexp topic &optional copyp) | |
1502 | "Copy all groups that match REGEXP to some topic." | |
1503 | (interactive | |
1504 | (let (topic) | |
1505 | (nreverse | |
1506 | (list | |
229b59da G |
1507 | (setq topic (gnus-completing-read "Copy to topic" |
1508 | (mapcar 'car gnus-topic-alist) t)) | |
eec82323 LMI |
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 | 1728 | (interactive |
229b59da G |
1729 | (list (gnus-completing-read "Sort topics in" |
1730 | (mapcar 'car gnus-topic-alist) t | |
1731 | (gnus-current-topic)) | |
16409b0b GM |
1732 | current-prefix-arg)) |
1733 | (let ((topic-topology (or (and topic (cdr (gnus-topic-find-topology topic))) | |
1734 | gnus-topic-topology))) | |
1735 | (gnus-topic-sort-topics-1 topic-topology reverse) | |
1736 | (gnus-topic-enter-dribble) | |
1737 | (gnus-group-list-groups) | |
1738 | (gnus-topic-goto-topic topic))) | |
1739 | ||
1740 | (defun gnus-topic-move (current to) | |
1741 | "Move the CURRENT topic to TO." | |
a1506d29 JB |
1742 | (interactive |
1743 | (list | |
16409b0b | 1744 | (gnus-group-topic-name) |
229b59da | 1745 | (gnus-completing-read "Move to topic" (mapcar 'car gnus-topic-alist) t))) |
16409b0b GM |
1746 | (unless (and current to) |
1747 | (error "Can't find topic")) | |
1748 | (let ((current-top (cdr (gnus-topic-find-topology current))) | |
1749 | (to-top (cdr (gnus-topic-find-topology to)))) | |
1750 | (unless current-top | |
1751 | (error "Can't find topic `%s'" current)) | |
1752 | (unless to-top | |
1753 | (error "Can't find topic `%s'" to)) | |
1754 | (if (gnus-topic-find-topology to current-top 0);; Don't care the level | |
1755 | (error "Can't move `%s' to its sub-level" current)) | |
1756 | (gnus-topic-find-topology current nil nil 'delete) | |
01c52d31 | 1757 | (setcdr (last to-top) (list current-top)) |
16409b0b GM |
1758 | (gnus-topic-enter-dribble) |
1759 | (gnus-group-list-groups) | |
1760 | (gnus-topic-goto-topic current))) | |
1761 | ||
1762 | (defun gnus-subscribe-topics (newsgroup) | |
1763 | (catch 'end | |
1764 | (let (match gnus-group-change-level-function) | |
1765 | (dolist (topic (gnus-topic-list)) | |
1766 | (when (and (setq match (cdr (assq 'subscribe | |
1767 | (gnus-topic-parameters topic)))) | |
1768 | (string-match match newsgroup)) | |
1769 | ;; Just subscribe the group. | |
1770 | (gnus-subscribe-alphabetically newsgroup) | |
1771 | ;; Add the group to the topic. | |
1772 | (nconc (assoc topic gnus-topic-alist) (list newsgroup)) | |
23f87bed MB |
1773 | ;; if this topic specifies a default level, use it |
1774 | (let ((subscribe-level (cdr (assq 'subscribe-level | |
1775 | (gnus-topic-parameters topic))))) | |
1776 | (when subscribe-level | |
1777 | (gnus-group-change-level newsgroup subscribe-level | |
1778 | gnus-level-default-subscribed))) | |
1779 | (throw 'end t))) | |
1780 | nil))) | |
a1506d29 | 1781 | |
eec82323 LMI |
1782 | (provide 'gnus-topic) |
1783 | ||
1784 | ;;; gnus-topic.el ends here |