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eec82323 | 1 | ;;; gnus-topic.el --- a folding minor mode for Gnus group buffers |
16409b0b GM |
2 | ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000 |
3 | ;; 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 | ||
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
12 | ;; it under the terms of the GNU General Public License as published by | |
13 | ;; the Free Software Foundation; either version 2, or (at your option) | |
14 | ;; any later version. | |
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 | |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
23 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
24 | ;; Boston, MA 02111-1307, USA. | |
25 | ||
26 | ;;; Commentary: | |
27 | ||
28 | ;;; Code: | |
29 | ||
5ab7173c RS |
30 | (eval-when-compile (require 'cl)) |
31 | ||
eec82323 LMI |
32 | (require 'gnus) |
33 | (require 'gnus-group) | |
34 | (require 'gnus-start) | |
6748645f | 35 | (require 'gnus-util) |
eec82323 LMI |
36 | |
37 | (defgroup gnus-topic nil | |
38 | "Group topics." | |
39 | :group 'gnus-group) | |
40 | ||
41 | (defvar gnus-topic-mode nil | |
42 | "Minor mode for Gnus group buffers.") | |
43 | ||
44 | (defcustom gnus-topic-mode-hook nil | |
45 | "Hook run in topic mode buffers." | |
46 | :type 'hook | |
47 | :group 'gnus-topic) | |
48 | ||
49 | (defcustom gnus-topic-line-format "%i[ %(%{%n%}%) -- %A ]%v\n" | |
50 | "Format of topic lines. | |
51 | It works along the same lines as a normal formatting string, | |
52 | with some simple extensions. | |
53 | ||
54 | %i Indentation based on topic level. | |
55 | %n Topic name. | |
56 | %v Nothing if the topic is visible, \"...\" otherwise. | |
57 | %g Number of groups in the topic. | |
58 | %a Number of unread articles in the groups in the topic. | |
59 | %A Number of unread articles in the groups in the topic and its subtopics. | |
60 | " | |
61 | :type 'string | |
62 | :group 'gnus-topic) | |
63 | ||
64 | (defcustom gnus-topic-indent-level 2 | |
65 | "*How much each subtopic should be indented." | |
66 | :type 'integer | |
67 | :group 'gnus-topic) | |
68 | ||
69 | (defcustom gnus-topic-display-empty-topics t | |
70 | "*If non-nil, display the topic lines even of topics that have no unread articles." | |
71 | :type 'boolean | |
72 | :group 'gnus-topic) | |
73 | ||
74 | ;; Internal variables. | |
75 | ||
76 | (defvar gnus-topic-active-topology nil) | |
77 | (defvar gnus-topic-active-alist nil) | |
6748645f | 78 | (defvar gnus-topic-unreads nil) |
eec82323 LMI |
79 | |
80 | (defvar gnus-topology-checked-p nil | |
81 | "Whether the topology has been checked in this session.") | |
82 | ||
83 | (defvar gnus-topic-killed-topics nil) | |
84 | (defvar gnus-topic-inhibit-change-level nil) | |
eec82323 LMI |
85 | |
86 | (defconst gnus-topic-line-format-alist | |
87 | `((?n name ?s) | |
88 | (?v visible ?s) | |
89 | (?i indentation ?s) | |
90 | (?g number-of-groups ?d) | |
91 | (?a (gnus-topic-articles-in-topic entries) ?d) | |
92 | (?A total-number-of-articles ?d) | |
93 | (?l level ?d))) | |
94 | ||
95 | (defvar gnus-topic-line-format-spec nil) | |
96 | ||
97 | ;;; Utility functions | |
98 | ||
99 | (defun gnus-group-topic-name () | |
100 | "The name of the topic on the current line." | |
101 | (let ((topic (get-text-property (gnus-point-at-bol) 'gnus-topic))) | |
102 | (and topic (symbol-name topic)))) | |
103 | ||
104 | (defun gnus-group-topic-level () | |
105 | "The level of the topic on the current line." | |
106 | (get-text-property (gnus-point-at-bol) 'gnus-topic-level)) | |
107 | ||
108 | (defun gnus-group-topic-unread () | |
109 | "The number of unread articles in topic on the current line." | |
110 | (get-text-property (gnus-point-at-bol) 'gnus-topic-unread)) | |
111 | ||
112 | (defun gnus-topic-unread (topic) | |
113 | "Return the number of unread articles in TOPIC." | |
6748645f | 114 | (or (cdr (assoc topic gnus-topic-unreads)) |
eec82323 LMI |
115 | 0)) |
116 | ||
117 | (defun gnus-group-topic-p () | |
118 | "Return non-nil if the current line is a topic." | |
119 | (gnus-group-topic-name)) | |
120 | ||
121 | (defun gnus-topic-visible-p () | |
122 | "Return non-nil if the current topic is visible." | |
123 | (get-text-property (gnus-point-at-bol) 'gnus-topic-visible)) | |
124 | ||
125 | (defun gnus-topic-articles-in-topic (entries) | |
126 | (let ((total 0) | |
127 | number) | |
128 | (while entries | |
129 | (when (numberp (setq number (car (pop entries)))) | |
130 | (incf total number))) | |
131 | total)) | |
132 | ||
133 | (defun gnus-group-topic (group) | |
134 | "Return the topic GROUP is a member of." | |
135 | (let ((alist gnus-topic-alist) | |
136 | out) | |
137 | (while alist | |
138 | (when (member group (cdar alist)) | |
139 | (setq out (caar alist) | |
140 | alist nil)) | |
141 | (setq alist (cdr alist))) | |
142 | out)) | |
143 | ||
144 | (defun gnus-group-parent-topic (group) | |
145 | "Return the topic GROUP is member of by looking at the group buffer." | |
146 | (save-excursion | |
147 | (set-buffer gnus-group-buffer) | |
148 | (if (gnus-group-goto-group group) | |
149 | (gnus-current-topic) | |
150 | (gnus-group-topic group)))) | |
151 | ||
152 | (defun gnus-topic-goto-topic (topic) | |
eec82323 LMI |
153 | (when topic |
154 | (gnus-goto-char (text-property-any (point-min) (point-max) | |
155 | 'gnus-topic (intern topic))))) | |
156 | ||
16409b0b GM |
157 | (defun gnus-topic-jump-to-topic (topic) |
158 | "Go to TOPIC." | |
159 | (interactive | |
160 | (list (completing-read "Go to topic: " | |
161 | (mapcar 'list (gnus-topic-list)) | |
162 | nil t))) | |
163 | (dolist (topic (gnus-current-topics topic)) | |
164 | (gnus-topic-fold t)) | |
165 | (gnus-topic-goto-topic topic)) | |
a1506d29 | 166 | |
eec82323 LMI |
167 | (defun gnus-current-topic () |
168 | "Return the name of the current topic." | |
169 | (let ((result | |
170 | (or (get-text-property (point) 'gnus-topic) | |
171 | (save-excursion | |
172 | (and (gnus-goto-char (previous-single-property-change | |
173 | (point) 'gnus-topic)) | |
174 | (get-text-property (max (1- (point)) (point-min)) | |
175 | 'gnus-topic)))))) | |
176 | (when result | |
177 | (symbol-name result)))) | |
178 | ||
6748645f LMI |
179 | (defun gnus-current-topics (&optional topic) |
180 | "Return a list of all current topics, lowest in hierarchy first. | |
181 | If TOPIC, start with that topic." | |
182 | (let ((topic (or topic (gnus-current-topic))) | |
eec82323 LMI |
183 | topics) |
184 | (while topic | |
185 | (push topic topics) | |
186 | (setq topic (gnus-topic-parent-topic topic))) | |
187 | (nreverse topics))) | |
188 | ||
189 | (defun gnus-group-active-topic-p () | |
190 | "Say whether the current topic comes from the active topics." | |
191 | (save-excursion | |
192 | (beginning-of-line) | |
193 | (get-text-property (point) 'gnus-active))) | |
194 | ||
8b93df01 DL |
195 | (defun gnus-topic-find-groups (topic &optional level all lowest recursive) |
196 | "Return entries for all visible groups in TOPIC. | |
197 | If RECURSIVE is t, return groups in its subtopics too." | |
eec82323 | 198 | (let ((groups (cdr (assoc topic gnus-topic-alist))) |
6748645f | 199 | info clevel unread group params visible-groups entry active) |
eec82323 | 200 | (setq lowest (or lowest 1)) |
6748645f | 201 | (setq level (or level gnus-level-unsubscribed)) |
eec82323 LMI |
202 | ;; We go through the newsrc to look for matches. |
203 | (while groups | |
204 | (when (setq group (pop groups)) | |
205 | (setq entry (gnus-gethash group gnus-newsrc-hashtb) | |
206 | info (nth 2 entry) | |
207 | params (gnus-info-params info) | |
208 | active (gnus-active group) | |
209 | unread (or (car entry) | |
210 | (and (not (equal group "dummy.group")) | |
211 | active | |
212 | (- (1+ (cdr active)) (car active)))) | |
213 | clevel (or (gnus-info-level info) | |
6748645f LMI |
214 | (if (member group gnus-zombie-list) |
215 | gnus-level-zombie gnus-level-killed)))) | |
eec82323 | 216 | (and |
16409b0b | 217 | info ; nil means that the group is dead. |
eec82323 LMI |
218 | (<= clevel level) |
219 | (>= clevel lowest) ; Is inside the level we want. | |
220 | (or all | |
16409b0b GM |
221 | (if (or (eq unread t) |
222 | (eq unread nil)) | |
eec82323 LMI |
223 | gnus-group-list-inactive-groups |
224 | (> unread 0)) | |
225 | (and gnus-list-groups-with-ticked-articles | |
226 | (cdr (assq 'tick (gnus-info-marks info)))) | |
16409b0b | 227 | ;; Has right readedness. |
eec82323 LMI |
228 | ;; Check for permanent visibility. |
229 | (and gnus-permanently-visible-groups | |
230 | (string-match gnus-permanently-visible-groups group)) | |
231 | (memq 'visible params) | |
232 | (cdr (assq 'visible params))) | |
233 | ;; Add this group to the list of visible groups. | |
234 | (push (or entry group) visible-groups))) | |
8b93df01 | 235 | (setq visible-groups (nreverse visible-groups)) |
a1506d29 | 236 | (when recursive |
8b93df01 DL |
237 | (if (eq recursive t) |
238 | (setq recursive (cdr (gnus-topic-find-topology topic)))) | |
239 | (mapcar (lambda (topic-topology) | |
a1506d29 JB |
240 | (setq visible-groups |
241 | (nconc visible-groups | |
8b93df01 | 242 | (gnus-topic-find-groups |
a1506d29 | 243 | (caar topic-topology) |
8b93df01 DL |
244 | level all lowest topic-topology)))) |
245 | (cdr recursive))) | |
246 | visible-groups)) | |
eec82323 LMI |
247 | |
248 | (defun gnus-topic-previous-topic (topic) | |
249 | "Return the previous topic on the same level as TOPIC." | |
250 | (let ((top (cddr (gnus-topic-find-topology | |
251 | (gnus-topic-parent-topic topic))))) | |
252 | (unless (equal topic (caaar top)) | |
253 | (while (and top (not (equal (caaadr top) topic))) | |
254 | (setq top (cdr top))) | |
255 | (caaar top)))) | |
256 | ||
257 | (defun gnus-topic-parent-topic (topic &optional topology) | |
258 | "Return the parent of TOPIC." | |
259 | (unless topology | |
260 | (setq topology gnus-topic-topology)) | |
261 | (let ((parent (car (pop topology))) | |
262 | result found) | |
263 | (while (and topology | |
264 | (not (setq found (equal (caaar topology) topic))) | |
265 | (not (setq result (gnus-topic-parent-topic | |
266 | topic (car topology))))) | |
267 | (setq topology (cdr topology))) | |
268 | (or result (and found parent)))) | |
269 | ||
270 | (defun gnus-topic-next-topic (topic &optional previous) | |
271 | "Return the next sibling of TOPIC." | |
272 | (let ((parentt (cddr (gnus-topic-find-topology | |
273 | (gnus-topic-parent-topic topic)))) | |
274 | prev) | |
275 | (while (and parentt | |
276 | (not (equal (caaar parentt) topic))) | |
277 | (setq prev (caaar parentt) | |
278 | parentt (cdr parentt))) | |
279 | (if previous | |
280 | prev | |
281 | (caaadr parentt)))) | |
282 | ||
283 | (defun gnus-topic-forward-topic (num) | |
284 | "Go to the next topic on the same level as the current one." | |
285 | (let* ((topic (gnus-current-topic)) | |
286 | (way (if (< num 0) 'gnus-topic-previous-topic | |
287 | 'gnus-topic-next-topic)) | |
288 | (num (abs num))) | |
289 | (while (and (not (zerop num)) | |
290 | (setq topic (funcall way topic))) | |
291 | (when (gnus-topic-goto-topic topic) | |
292 | (decf num))) | |
293 | (unless (zerop num) | |
294 | (goto-char (point-max))) | |
295 | num)) | |
296 | ||
297 | (defun gnus-topic-find-topology (topic &optional topology level remove) | |
298 | "Return the topology of TOPIC." | |
299 | (unless topology | |
300 | (setq topology gnus-topic-topology) | |
301 | (setq level 0)) | |
302 | (let ((top topology) | |
303 | result) | |
304 | (if (equal (caar topology) topic) | |
305 | (progn | |
306 | (when remove | |
307 | (delq topology remove)) | |
308 | (cons level topology)) | |
309 | (setq topology (cdr topology)) | |
310 | (while (and topology | |
311 | (not (setq result (gnus-topic-find-topology | |
312 | topic (car topology) (1+ level) | |
313 | (and remove top))))) | |
314 | (setq topology (cdr topology))) | |
315 | result))) | |
316 | ||
317 | (defvar gnus-tmp-topics nil) | |
318 | (defun gnus-topic-list (&optional topology) | |
319 | "Return a list of all topics in the topology." | |
320 | (unless topology | |
321 | (setq topology gnus-topic-topology | |
322 | gnus-tmp-topics nil)) | |
323 | (push (caar topology) gnus-tmp-topics) | |
324 | (mapcar 'gnus-topic-list (cdr topology)) | |
325 | gnus-tmp-topics) | |
326 | ||
327 | ;;; Topic parameter jazz | |
328 | ||
329 | (defun gnus-topic-parameters (topic) | |
330 | "Return the parameters for TOPIC." | |
331 | (let ((top (gnus-topic-find-topology topic))) | |
332 | (when top | |
333 | (nth 3 (cadr top))))) | |
334 | ||
335 | (defun gnus-topic-set-parameters (topic parameters) | |
336 | "Set the topic parameters of TOPIC to PARAMETERS." | |
337 | (let ((top (gnus-topic-find-topology topic))) | |
338 | (unless top | |
339 | (error "No such topic: %s" topic)) | |
340 | ;; We may have to extend if there is no parameters here | |
341 | ;; to begin with. | |
342 | (unless (nthcdr 2 (cadr top)) | |
343 | (nconc (cadr top) (list nil))) | |
344 | (unless (nthcdr 3 (cadr top)) | |
345 | (nconc (cadr top) (list nil))) | |
346 | (setcar (nthcdr 3 (cadr top)) parameters) | |
347 | (gnus-dribble-enter | |
348 | (format "(gnus-topic-set-parameters %S '%S)" topic parameters)))) | |
349 | ||
350 | (defun gnus-group-topic-parameters (group) | |
351 | "Compute the group parameters for GROUP taking into account inheritance from topics." | |
6748645f | 352 | (let ((params-list (copy-sequence (gnus-group-get-parameter group)))) |
eec82323 LMI |
353 | (save-excursion |
354 | (gnus-group-goto-group group) | |
6748645f LMI |
355 | (nconc params-list |
356 | (gnus-topic-hierarchical-parameters (gnus-current-topic)))))) | |
357 | ||
358 | (defun gnus-topic-hierarchical-parameters (topic) | |
359 | "Return a topic list computed for TOPIC." | |
360 | (let ((topics (gnus-current-topics topic)) | |
361 | params-list param out params) | |
362 | (while topics | |
363 | (push (gnus-topic-parameters (pop topics)) params-list)) | |
364 | ;; We probably have lots of nil elements here, so | |
365 | ;; we remove them. Probably faster than doing this "properly". | |
366 | (setq params-list (delq nil params-list)) | |
367 | ;; Now we have all the parameters, so we go through them | |
368 | ;; and do inheritance in the obvious way. | |
369 | (while (setq params (pop params-list)) | |
370 | (while (setq param (pop params)) | |
371 | (when (atom param) | |
372 | (setq param (cons param t))) | |
373 | ;; Override any old versions of this param. | |
374 | (gnus-pull (car param) out) | |
375 | (push param out))) | |
376 | ;; Return the resulting parameter list. | |
377 | out)) | |
eec82323 LMI |
378 | |
379 | ;;; General utility functions | |
380 | ||
381 | (defun gnus-topic-enter-dribble () | |
382 | (gnus-dribble-enter | |
383 | (format "(setq gnus-topic-topology '%S)" gnus-topic-topology))) | |
384 | ||
385 | ;;; Generating group buffers | |
386 | ||
16409b0b GM |
387 | (defun gnus-group-prepare-topics (level &optional all lowest |
388 | regexp list-topic topic-level) | |
6748645f LMI |
389 | "List all newsgroups with unread articles of level LEVEL or lower. |
390 | Use the `gnus-group-topics' to sort the groups. | |
eec82323 LMI |
391 | If ALL is non-nil, list groups that have no unread articles. |
392 | If LOWEST is non-nil, list all newsgroups of level LOWEST or higher." | |
393 | (set-buffer gnus-group-buffer) | |
394 | (let ((buffer-read-only nil) | |
395 | (lowest (or lowest 1))) | |
396 | ||
eec82323 LMI |
397 | (when (or (not gnus-topic-alist) |
398 | (not gnus-topology-checked-p)) | |
399 | (gnus-topic-check-topology)) | |
400 | ||
401 | (unless list-topic | |
402 | (erase-buffer)) | |
403 | ||
404 | ;; List dead groups? | |
6748645f LMI |
405 | (when (and (>= level gnus-level-zombie) |
406 | (<= lowest gnus-level-zombie)) | |
eec82323 LMI |
407 | (gnus-group-prepare-flat-list-dead |
408 | (setq gnus-zombie-list (sort gnus-zombie-list 'string<)) | |
409 | gnus-level-zombie ?Z | |
410 | regexp)) | |
411 | ||
412 | (when (and (>= level gnus-level-killed) (<= lowest gnus-level-killed)) | |
413 | (gnus-group-prepare-flat-list-dead | |
414 | (setq gnus-killed-list (sort gnus-killed-list 'string<)) | |
415 | gnus-level-killed ?K | |
416 | regexp)) | |
417 | ||
418 | ;; Use topics. | |
419 | (prog1 | |
420 | (when (< lowest gnus-level-zombie) | |
421 | (if list-topic | |
422 | (let ((top (gnus-topic-find-topology list-topic))) | |
423 | (gnus-topic-prepare-topic (cdr top) (car top) | |
6748645f LMI |
424 | (or topic-level level) all |
425 | nil lowest)) | |
eec82323 | 426 | (gnus-topic-prepare-topic gnus-topic-topology 0 |
6748645f LMI |
427 | (or topic-level level) all |
428 | nil lowest))) | |
eec82323 LMI |
429 | |
430 | (gnus-group-set-mode-line) | |
431 | (setq gnus-group-list-mode (cons level all)) | |
6748645f | 432 | (gnus-run-hooks 'gnus-group-prepare-hook)))) |
eec82323 | 433 | |
6748645f LMI |
434 | (defun gnus-topic-prepare-topic (topicl level &optional list-level all silent |
435 | lowest) | |
eec82323 LMI |
436 | "Insert TOPIC into the group buffer. |
437 | If SILENT, don't insert anything. Return the number of unread | |
438 | articles in the topic and its subtopics." | |
439 | (let* ((type (pop topicl)) | |
6748645f LMI |
440 | (entries (gnus-topic-find-groups |
441 | (car type) list-level | |
442 | (or all | |
16409b0b | 443 | (cdr (assq 'visible |
6748645f LMI |
444 | (gnus-topic-hierarchical-parameters |
445 | (car type))))) | |
446 | lowest)) | |
eec82323 LMI |
447 | (visiblep (and (eq (nth 1 type) 'visible) (not silent))) |
448 | (gnus-group-indentation | |
449 | (make-string (* gnus-topic-indent-level level) ? )) | |
450 | (beg (progn (beginning-of-line) (point))) | |
451 | (topicl (reverse topicl)) | |
452 | (all-entries entries) | |
453 | (point-max (point-max)) | |
454 | (unread 0) | |
455 | (topic (car type)) | |
456 | info entry end active tick) | |
457 | ;; Insert any sub-topics. | |
458 | (while topicl | |
459 | (incf unread | |
460 | (gnus-topic-prepare-topic | |
461 | (pop topicl) (1+ level) list-level all | |
6748645f | 462 | (not visiblep) lowest))) |
eec82323 LMI |
463 | (setq end (point)) |
464 | (goto-char beg) | |
465 | ;; Insert all the groups that belong in this topic. | |
466 | (while (setq entry (pop entries)) | |
467 | (when visiblep | |
468 | (if (stringp entry) | |
469 | ;; Dead groups. | |
470 | (gnus-group-insert-group-line | |
16409b0b GM |
471 | entry (if (member entry gnus-zombie-list) |
472 | gnus-level-zombie gnus-level-killed) | |
eec82323 LMI |
473 | nil (- (1+ (cdr (setq active (gnus-active entry)))) |
474 | (car active)) | |
475 | nil) | |
476 | ;; Living groups. | |
477 | (when (setq info (nth 2 entry)) | |
478 | (gnus-group-insert-group-line | |
479 | (gnus-info-group info) | |
480 | (gnus-info-level info) (gnus-info-marks info) | |
481 | (car entry) (gnus-info-method info))))) | |
482 | (when (and (listp entry) | |
a8151ef7 | 483 | (numberp (car entry))) |
eec82323 LMI |
484 | (incf unread (car entry))) |
485 | (when (listp entry) | |
486 | (setq tick t))) | |
487 | (goto-char beg) | |
488 | ;; Insert the topic line. | |
489 | (when (and (not silent) | |
490 | (or gnus-topic-display-empty-topics ;We want empty topics | |
491 | (not (zerop unread)) ;Non-empty | |
492 | tick ;Ticked articles | |
493 | (/= point-max (point-max)))) ;Unactivated groups | |
494 | (gnus-extent-start-open (point)) | |
495 | (gnus-topic-insert-topic-line | |
496 | (car type) visiblep | |
497 | (not (eq (nth 2 type) 'hidden)) | |
498 | level all-entries unread)) | |
6748645f | 499 | (gnus-topic-update-unreads (car type) unread) |
eec82323 LMI |
500 | (goto-char end) |
501 | unread)) | |
502 | ||
503 | (defun gnus-topic-remove-topic (&optional insert total-remove hide in-level) | |
504 | "Remove the current topic." | |
505 | (let ((topic (gnus-group-topic-name)) | |
506 | (level (gnus-group-topic-level)) | |
507 | (beg (progn (beginning-of-line) (point))) | |
508 | buffer-read-only) | |
509 | (when topic | |
510 | (while (and (zerop (forward-line 1)) | |
511 | (> (or (gnus-group-topic-level) (1+ level)) level))) | |
512 | (delete-region beg (point)) | |
513 | ;; Do the change in this rather odd manner because it has been | |
514 | ;; reported that some topics share parts of some lists, for some | |
515 | ;; reason. I have been unable to determine why this is the | |
516 | ;; case, but this hack seems to take care of things. | |
517 | (let ((data (cadr (gnus-topic-find-topology topic)))) | |
518 | (setcdr data | |
519 | (list (if insert 'visible 'invisible) | |
16409b0b | 520 | (caddr data) |
eec82323 LMI |
521 | (cadddr data)))) |
522 | (if total-remove | |
523 | (setq gnus-topic-alist | |
524 | (delq (assoc topic gnus-topic-alist) gnus-topic-alist)) | |
525 | (gnus-topic-insert-topic topic in-level))))) | |
526 | ||
527 | (defun gnus-topic-insert-topic (topic &optional level) | |
528 | "Insert TOPIC." | |
529 | (gnus-group-prepare-topics | |
530 | (car gnus-group-list-mode) (cdr gnus-group-list-mode) | |
531 | nil nil topic level)) | |
532 | ||
16409b0b | 533 | (defun gnus-topic-fold (&optional insert topic) |
eec82323 | 534 | "Remove/insert the current topic." |
16409b0b | 535 | (let ((topic (or topic (gnus-group-topic-name)))) |
eec82323 LMI |
536 | (when topic |
537 | (save-excursion | |
538 | (if (not (gnus-group-active-topic-p)) | |
539 | (gnus-topic-remove-topic | |
540 | (or insert (not (gnus-topic-visible-p)))) | |
541 | (let ((gnus-topic-topology gnus-topic-active-topology) | |
542 | (gnus-topic-alist gnus-topic-active-alist) | |
543 | (gnus-group-list-mode (cons 5 t))) | |
544 | (gnus-topic-remove-topic | |
545 | (or insert (not (gnus-topic-visible-p))) nil nil 9) | |
546 | (gnus-topic-enter-dribble))))))) | |
547 | ||
548 | (defun gnus-topic-insert-topic-line (name visiblep shownp level entries | |
549 | &optional unread) | |
550 | (let* ((visible (if visiblep "" "...")) | |
551 | (indentation (make-string (* gnus-topic-indent-level level) ? )) | |
552 | (total-number-of-articles unread) | |
553 | (number-of-groups (length entries)) | |
6748645f LMI |
554 | (active-topic (eq gnus-topic-alist gnus-topic-active-alist)) |
555 | gnus-tmp-header) | |
556 | (gnus-topic-update-unreads name unread) | |
eec82323 LMI |
557 | (beginning-of-line) |
558 | ;; Insert the text. | |
16409b0b GM |
559 | (if shownp |
560 | (gnus-add-text-properties | |
561 | (point) | |
562 | (prog1 (1+ (point)) | |
563 | (eval gnus-topic-line-format-spec)) | |
564 | (list 'gnus-topic (intern name) | |
565 | 'gnus-topic-level level | |
566 | 'gnus-topic-unread unread | |
567 | 'gnus-active active-topic | |
568 | 'gnus-topic-visible visiblep))))) | |
eec82323 | 569 | |
6748645f LMI |
570 | (defun gnus-topic-update-unreads (topic unreads) |
571 | (setq gnus-topic-unreads (delq (assoc topic gnus-topic-unreads) | |
572 | gnus-topic-unreads)) | |
573 | (push (cons topic unreads) gnus-topic-unreads)) | |
574 | ||
eec82323 LMI |
575 | (defun gnus-topic-update-topics-containing-group (group) |
576 | "Update all topics that have GROUP as a member." | |
577 | (when (and (eq major-mode 'gnus-group-mode) | |
578 | gnus-topic-mode) | |
579 | (save-excursion | |
580 | (let ((alist gnus-topic-alist)) | |
581 | ;; This is probably not entirely correct. If a topic | |
582 | ;; isn't shown, then it's not updated. But the updating | |
583 | ;; should be performed in any case, since the topic's | |
584 | ;; parent should be updated. Pfft. | |
585 | (while alist | |
586 | (when (and (member group (cdar alist)) | |
587 | (gnus-topic-goto-topic (caar alist))) | |
588 | (gnus-topic-update-topic-line (caar alist))) | |
589 | (pop alist)))))) | |
590 | ||
591 | (defun gnus-topic-update-topic () | |
592 | "Update all parent topics to the current group." | |
593 | (when (and (eq major-mode 'gnus-group-mode) | |
594 | gnus-topic-mode) | |
595 | (let ((group (gnus-group-group-name)) | |
a8151ef7 | 596 | (m (point-marker)) |
eec82323 LMI |
597 | (buffer-read-only nil)) |
598 | (when (and group | |
599 | (gnus-get-info group) | |
600 | (gnus-topic-goto-topic (gnus-current-topic))) | |
601 | (gnus-topic-update-topic-line (gnus-group-topic-name)) | |
a8151ef7 LMI |
602 | (goto-char m) |
603 | (set-marker m nil) | |
eec82323 LMI |
604 | (gnus-group-position-point))))) |
605 | ||
606 | (defun gnus-topic-goto-missing-group (group) | |
607 | "Place point where GROUP is supposed to be inserted." | |
608 | (let* ((topic (gnus-group-topic group)) | |
609 | (groups (cdr (assoc topic gnus-topic-alist))) | |
610 | (g (cdr (member group groups))) | |
16409b0b GM |
611 | (unfound t) |
612 | entry) | |
eec82323 LMI |
613 | ;; Try to jump to a visible group. |
614 | (while (and g (not (gnus-group-goto-group (car g) t))) | |
615 | (pop g)) | |
616 | ;; It wasn't visible, so we try to see where to insert it. | |
617 | (when (not g) | |
618 | (setq g (cdr (member group (reverse groups)))) | |
619 | (while (and g unfound) | |
620 | (when (gnus-group-goto-group (pop g) t) | |
621 | (forward-line 1) | |
622 | (setq unfound nil))) | |
623 | (when (and unfound | |
624 | topic | |
625 | (not (gnus-topic-goto-missing-topic topic))) | |
16409b0b GM |
626 | (let* ((top (gnus-topic-find-topology topic)) |
627 | (children (cddr top)) | |
628 | (type (cadr top)) | |
629 | (unread 0) | |
630 | (entries (gnus-topic-find-groups | |
631 | (car type) (car gnus-group-list-mode) | |
632 | (cdr gnus-group-list-mode)))) | |
633 | (while children | |
634 | (incf unread (gnus-topic-unread (caar (pop children))))) | |
635 | (while (setq entry (pop entries)) | |
636 | (when (numberp (car entry)) | |
637 | (incf unread (car entry)))) | |
638 | (gnus-topic-insert-topic-line | |
639 | topic t t (car (gnus-topic-find-topology topic)) nil unread)))))) | |
eec82323 LMI |
640 | |
641 | (defun gnus-topic-goto-missing-topic (topic) | |
642 | (if (gnus-topic-goto-topic topic) | |
643 | (forward-line 1) | |
644 | ;; Topic not displayed. | |
645 | (let* ((top (gnus-topic-find-topology | |
646 | (gnus-topic-parent-topic topic))) | |
647 | (tp (reverse (cddr top)))) | |
16409b0b GM |
648 | (if (not top) |
649 | (gnus-topic-insert-topic-line | |
650 | topic t t (car (gnus-topic-find-topology topic)) nil 0) | |
651 | (while (not (equal (caaar tp) topic)) | |
652 | (setq tp (cdr tp))) | |
653 | (pop tp) | |
654 | (while (and tp | |
655 | (not (gnus-topic-goto-topic (caaar tp)))) | |
656 | (pop tp)) | |
657 | (if tp | |
658 | (gnus-topic-forward-topic 1) | |
659 | (gnus-topic-goto-missing-topic (caadr top))))) | |
eec82323 LMI |
660 | nil)) |
661 | ||
662 | (defun gnus-topic-update-topic-line (topic-name &optional reads) | |
663 | (let* ((top (gnus-topic-find-topology topic-name)) | |
664 | (type (cadr top)) | |
665 | (children (cddr top)) | |
666 | (entries (gnus-topic-find-groups | |
667 | (car type) (car gnus-group-list-mode) | |
668 | (cdr gnus-group-list-mode))) | |
669 | (parent (gnus-topic-parent-topic topic-name)) | |
670 | (all-entries entries) | |
671 | (unread 0) | |
6748645f | 672 | old-unread entry new-unread) |
eec82323 LMI |
673 | (when (gnus-topic-goto-topic (car type)) |
674 | ;; Tally all the groups that belong in this topic. | |
675 | (if reads | |
676 | (setq unread (- (gnus-group-topic-unread) reads)) | |
677 | (while children | |
678 | (incf unread (gnus-topic-unread (caar (pop children))))) | |
679 | (while (setq entry (pop entries)) | |
680 | (when (numberp (car entry)) | |
681 | (incf unread (car entry))))) | |
682 | (setq old-unread (gnus-group-topic-unread)) | |
683 | ;; Insert the topic line. | |
684 | (gnus-topic-insert-topic-line | |
685 | (car type) (gnus-topic-visible-p) | |
686 | (not (eq (nth 2 type) 'hidden)) | |
687 | (gnus-group-topic-level) all-entries unread) | |
6748645f LMI |
688 | (gnus-delete-line) |
689 | (forward-line -1) | |
690 | (setq new-unread (gnus-group-topic-unread))) | |
eec82323 LMI |
691 | (when parent |
692 | (forward-line -1) | |
693 | (gnus-topic-update-topic-line | |
6748645f LMI |
694 | parent |
695 | (- (or old-unread 0) (or new-unread 0)))) | |
eec82323 LMI |
696 | unread)) |
697 | ||
698 | (defun gnus-topic-group-indentation () | |
699 | (make-string | |
700 | (* gnus-topic-indent-level | |
701 | (or (save-excursion | |
702 | (forward-line -1) | |
703 | (gnus-topic-goto-topic (gnus-current-topic)) | |
704 | (gnus-group-topic-level)) | |
705 | 0)) | |
706 | ? )) | |
707 | ||
708 | ;;; Initialization | |
709 | ||
710 | (gnus-add-shutdown 'gnus-topic-close 'gnus) | |
711 | ||
712 | (defun gnus-topic-close () | |
713 | (setq gnus-topic-active-topology nil | |
714 | gnus-topic-active-alist nil | |
715 | gnus-topic-killed-topics nil | |
eec82323 LMI |
716 | gnus-topology-checked-p nil)) |
717 | ||
718 | (defun gnus-topic-check-topology () | |
719 | ;; The first time we set the topology to whatever we have | |
720 | ;; gotten here, which can be rather random. | |
721 | (unless gnus-topic-alist | |
722 | (gnus-topic-init-alist)) | |
723 | ||
724 | (setq gnus-topology-checked-p t) | |
725 | ;; Go through the topic alist and make sure that all topics | |
726 | ;; are in the topic topology. | |
727 | (let ((topics (gnus-topic-list)) | |
728 | (alist gnus-topic-alist) | |
729 | changed) | |
730 | (while alist | |
731 | (unless (member (caar alist) topics) | |
732 | (nconc gnus-topic-topology | |
733 | (list (list (list (caar alist) 'visible)))) | |
734 | (setq changed t)) | |
735 | (setq alist (cdr alist))) | |
736 | (when changed | |
737 | (gnus-topic-enter-dribble)) | |
738 | ;; Conversely, go through the topology and make sure that all | |
739 | ;; topologies have alists. | |
740 | (while topics | |
741 | (unless (assoc (car topics) gnus-topic-alist) | |
742 | (push (list (car topics)) gnus-topic-alist)) | |
743 | (pop topics))) | |
744 | ;; Go through all living groups and make sure that | |
745 | ;; they belong to some topic. | |
746 | (let* ((tgroups (apply 'append (mapcar (lambda (entry) (cdr entry)) | |
747 | gnus-topic-alist))) | |
a8151ef7 | 748 | (entry (last (assoc (caar gnus-topic-topology) gnus-topic-alist))) |
eec82323 LMI |
749 | (newsrc (cdr gnus-newsrc-alist)) |
750 | group) | |
751 | (while newsrc | |
752 | (unless (member (setq group (gnus-info-group (pop newsrc))) tgroups) | |
a8151ef7 LMI |
753 | (setcdr entry (list group)) |
754 | (setq entry (cdr entry))))) | |
eec82323 LMI |
755 | ;; Go through all topics and make sure they contain only living groups. |
756 | (let ((alist gnus-topic-alist) | |
757 | topic) | |
758 | (while (setq topic (pop alist)) | |
759 | (while (cdr topic) | |
a8151ef7 LMI |
760 | (if (and (cadr topic) |
761 | (gnus-gethash (cadr topic) gnus-newsrc-hashtb)) | |
eec82323 LMI |
762 | (setq topic (cdr topic)) |
763 | (setcdr topic (cddr topic))))))) | |
764 | ||
765 | (defun gnus-topic-init-alist () | |
766 | "Initialize the topic structures." | |
767 | (setq gnus-topic-topology | |
768 | (cons (list "Gnus" 'visible) | |
769 | (mapcar (lambda (topic) | |
770 | (list (list (car topic) 'visible))) | |
771 | '(("misc"))))) | |
772 | (setq gnus-topic-alist | |
773 | (list (cons "misc" | |
774 | (mapcar (lambda (info) (gnus-info-group info)) | |
775 | (cdr gnus-newsrc-alist))) | |
776 | (list "Gnus"))) | |
777 | (gnus-topic-enter-dribble)) | |
778 | ||
779 | ;;; Maintenance | |
780 | ||
781 | (defun gnus-topic-clean-alist () | |
782 | "Remove bogus groups from the topic alist." | |
783 | (let ((topic-alist gnus-topic-alist) | |
784 | result topic) | |
785 | (unless gnus-killed-hashtb | |
786 | (gnus-make-hashtable-from-killed)) | |
787 | (while (setq topic (pop topic-alist)) | |
788 | (let ((topic-name (pop topic)) | |
789 | group filtered-topic) | |
790 | (while (setq group (pop topic)) | |
791 | (when (and (or (gnus-gethash group gnus-active-hashtb) | |
792 | (gnus-info-method (gnus-get-info group))) | |
793 | (not (gnus-gethash group gnus-killed-hashtb))) | |
794 | (push group filtered-topic))) | |
795 | (push (cons topic-name (nreverse filtered-topic)) result))) | |
796 | (setq gnus-topic-alist (nreverse result)))) | |
797 | ||
a8151ef7 | 798 | (defun gnus-topic-change-level (group level oldlevel &optional previous) |
eec82323 LMI |
799 | "Run when changing levels to enter/remove groups from topics." |
800 | (save-excursion | |
801 | (set-buffer gnus-group-buffer) | |
6748645f LMI |
802 | (let ((buffer-read-only nil)) |
803 | (unless gnus-topic-inhibit-change-level | |
804 | (gnus-group-goto-group (or (car (nth 2 previous)) group)) | |
805 | (when (and gnus-topic-mode | |
806 | gnus-topic-alist | |
807 | (not gnus-topic-inhibit-change-level)) | |
808 | ;; Remove the group from the topics. | |
809 | (if (and (< oldlevel gnus-level-zombie) | |
810 | (>= level gnus-level-zombie)) | |
811 | (let ((alist gnus-topic-alist)) | |
812 | (while (gnus-group-goto-group group) | |
813 | (gnus-delete-line)) | |
814 | (while alist | |
815 | (when (member group (car alist)) | |
816 | (setcdr (car alist) (delete group (cdar alist)))) | |
817 | (pop alist))) | |
818 | ;; If the group is subscribed we enter it into the topics. | |
819 | (when (and (< level gnus-level-zombie) | |
820 | (>= oldlevel gnus-level-zombie)) | |
821 | (let* ((prev (gnus-group-group-name)) | |
822 | (gnus-topic-inhibit-change-level t) | |
823 | (gnus-group-indentation | |
824 | (make-string | |
825 | (* gnus-topic-indent-level | |
826 | (or (save-excursion | |
827 | (gnus-topic-goto-topic (gnus-current-topic)) | |
828 | (gnus-group-topic-level)) | |
829 | 0)) | |
830 | ? )) | |
831 | (yanked (list group)) | |
832 | alist talist end) | |
833 | ;; Then we enter the yanked groups into the topics they belong | |
834 | ;; to. | |
835 | (when (setq alist (assoc (save-excursion | |
836 | (forward-line -1) | |
837 | (or | |
838 | (gnus-current-topic) | |
839 | (caar gnus-topic-topology))) | |
840 | gnus-topic-alist)) | |
841 | (setq talist alist) | |
842 | (when (stringp yanked) | |
843 | (setq yanked (list yanked))) | |
844 | (if (not prev) | |
845 | (nconc alist yanked) | |
846 | (if (not (cdr alist)) | |
847 | (setcdr alist (nconc yanked (cdr alist))) | |
848 | (while (and (not end) (cdr alist)) | |
849 | (when (equal (cadr alist) prev) | |
850 | (setcdr alist (nconc yanked (cdr alist))) | |
851 | (setq end t)) | |
852 | (setq alist (cdr alist))) | |
853 | (unless end | |
854 | (nconc talist yanked)))))) | |
855 | (gnus-topic-update-topic)))))))) | |
eec82323 LMI |
856 | |
857 | (defun gnus-topic-goto-next-group (group props) | |
858 | "Go to group or the next group after group." | |
859 | (if (not group) | |
860 | (if (not (memq 'gnus-topic props)) | |
861 | (goto-char (point-max)) | |
862 | (gnus-topic-goto-topic (symbol-name (cadr (memq 'gnus-topic props))))) | |
863 | (if (gnus-group-goto-group group) | |
864 | t | |
865 | ;; The group is no longer visible. | |
866 | (let* ((list (assoc (gnus-group-topic group) gnus-topic-alist)) | |
867 | (after (cdr (member group (cdr list))))) | |
868 | ;; First try to put point on a group after the current one. | |
869 | (while (and after | |
870 | (not (gnus-group-goto-group (car after)))) | |
871 | (setq after (cdr after))) | |
872 | ;; Then try to put point on a group before point. | |
873 | (unless after | |
874 | (setq after (cdr (member group (reverse (cdr list))))) | |
875 | (while (and after | |
876 | (not (gnus-group-goto-group (car after)))) | |
877 | (setq after (cdr after)))) | |
878 | ;; Finally, just put point on the topic. | |
879 | (if (not (car list)) | |
880 | (goto-char (point-min)) | |
881 | (unless after | |
882 | (gnus-topic-goto-topic (car list)) | |
883 | (setq after nil))) | |
884 | t)))) | |
885 | ||
886 | ;;; Topic-active functions | |
887 | ||
888 | (defun gnus-topic-grok-active (&optional force) | |
889 | "Parse all active groups and create topic structures for them." | |
890 | ;; First we make sure that we have really read the active file. | |
891 | (when (or force | |
892 | (not gnus-topic-active-alist)) | |
893 | (let (groups) | |
894 | ;; Get a list of all groups available. | |
895 | (mapatoms (lambda (g) (when (symbol-value g) | |
896 | (push (symbol-name g) groups))) | |
897 | gnus-active-hashtb) | |
898 | (setq groups (sort groups 'string<)) | |
899 | ;; Init the variables. | |
900 | (setq gnus-topic-active-topology (list (list "" 'visible))) | |
901 | (setq gnus-topic-active-alist nil) | |
902 | ;; Descend the top-level hierarchy. | |
903 | (gnus-topic-grok-active-1 gnus-topic-active-topology groups) | |
904 | ;; Set the top-level topic names to something nice. | |
905 | (setcar (car gnus-topic-active-topology) "Gnus active") | |
906 | (setcar (car gnus-topic-active-alist) "Gnus active")))) | |
907 | ||
908 | (defun gnus-topic-grok-active-1 (topology groups) | |
909 | (let* ((name (caar topology)) | |
910 | (prefix (concat "^" (regexp-quote name))) | |
911 | tgroups ntopology group) | |
912 | (while (and groups | |
913 | (string-match prefix (setq group (car groups)))) | |
914 | (if (not (string-match "\\." group (match-end 0))) | |
915 | ;; There are no further hierarchies here, so we just | |
916 | ;; enter this group into the list belonging to this | |
917 | ;; topic. | |
918 | (push (pop groups) tgroups) | |
919 | ;; New sub-hierarchy, so we add it to the topology. | |
920 | (nconc topology (list (setq ntopology | |
921 | (list (list (substring | |
922 | group 0 (match-end 0)) | |
923 | 'invisible))))) | |
924 | ;; Descend the hierarchy. | |
925 | (setq groups (gnus-topic-grok-active-1 ntopology groups)))) | |
926 | ;; We remove the trailing "." from the topic name. | |
927 | (setq name | |
928 | (if (string-match "\\.$" name) | |
929 | (substring name 0 (match-beginning 0)) | |
930 | name)) | |
931 | ;; Add this topic and its groups to the topic alist. | |
932 | (push (cons name (nreverse tgroups)) gnus-topic-active-alist) | |
933 | (setcar (car topology) name) | |
934 | ;; We return the rest of the groups that didn't belong | |
935 | ;; to this topic. | |
936 | groups)) | |
937 | ||
938 | ;;; Topic mode, commands and keymap. | |
939 | ||
940 | (defvar gnus-topic-mode-map nil) | |
941 | (defvar gnus-group-topic-map nil) | |
942 | ||
943 | (unless gnus-topic-mode-map | |
944 | (setq gnus-topic-mode-map (make-sparse-keymap)) | |
945 | ||
946 | ;; Override certain group mode keys. | |
947 | (gnus-define-keys gnus-topic-mode-map | |
948 | "=" gnus-topic-select-group | |
949 | "\r" gnus-topic-select-group | |
950 | " " gnus-topic-read-group | |
16409b0b | 951 | "\C-c\C-x" gnus-topic-expire-articles |
eec82323 LMI |
952 | "\C-k" gnus-topic-kill-group |
953 | "\C-y" gnus-topic-yank-group | |
954 | "\M-g" gnus-topic-get-new-news-this-topic | |
955 | "AT" gnus-topic-list-active | |
956 | "Gp" gnus-topic-edit-parameters | |
957 | "#" gnus-topic-mark-topic | |
958 | "\M-#" gnus-topic-unmark-topic | |
6748645f LMI |
959 | [tab] gnus-topic-indent |
960 | [(meta tab)] gnus-topic-unindent | |
961 | "\C-i" gnus-topic-indent | |
962 | "\M-\C-i" gnus-topic-unindent | |
eec82323 LMI |
963 | gnus-mouse-2 gnus-mouse-pick-topic) |
964 | ||
965 | ;; Define a new submap. | |
966 | (gnus-define-keys (gnus-group-topic-map "T" gnus-group-mode-map) | |
967 | "#" gnus-topic-mark-topic | |
968 | "\M-#" gnus-topic-unmark-topic | |
969 | "n" gnus-topic-create-topic | |
970 | "m" gnus-topic-move-group | |
971 | "D" gnus-topic-remove-group | |
972 | "c" gnus-topic-copy-group | |
973 | "h" gnus-topic-hide-topic | |
974 | "s" gnus-topic-show-topic | |
16409b0b | 975 | "j" gnus-topic-jump-to-topic |
eec82323 LMI |
976 | "M" gnus-topic-move-matching |
977 | "C" gnus-topic-copy-matching | |
978 | "\C-i" gnus-topic-indent | |
979 | [tab] gnus-topic-indent | |
980 | "r" gnus-topic-rename | |
a8151ef7 LMI |
981 | "\177" gnus-topic-delete |
982 | [delete] gnus-topic-delete | |
6748645f | 983 | "H" gnus-topic-toggle-display-empty-topics) |
eec82323 LMI |
984 | |
985 | (gnus-define-keys (gnus-topic-sort-map "S" gnus-group-topic-map) | |
986 | "s" gnus-topic-sort-groups | |
987 | "a" gnus-topic-sort-groups-by-alphabet | |
988 | "u" gnus-topic-sort-groups-by-unread | |
989 | "l" gnus-topic-sort-groups-by-level | |
990 | "v" gnus-topic-sort-groups-by-score | |
991 | "r" gnus-topic-sort-groups-by-rank | |
992 | "m" gnus-topic-sort-groups-by-method)) | |
993 | ||
994 | (defun gnus-topic-make-menu-bar () | |
995 | (unless (boundp 'gnus-topic-menu) | |
996 | (easy-menu-define | |
997 | gnus-topic-menu gnus-topic-mode-map "" | |
998 | '("Topics" | |
999 | ["Toggle topics" gnus-topic-mode t] | |
1000 | ("Groups" | |
1001 | ["Copy" gnus-topic-copy-group t] | |
1002 | ["Move" gnus-topic-move-group t] | |
1003 | ["Remove" gnus-topic-remove-group t] | |
1004 | ["Copy matching" gnus-topic-copy-matching t] | |
1005 | ["Move matching" gnus-topic-move-matching t]) | |
1006 | ("Topics" | |
16409b0b | 1007 | ["Goto" gnus-topic-jump-to-topic t] |
eec82323 LMI |
1008 | ["Show" gnus-topic-show-topic t] |
1009 | ["Hide" gnus-topic-hide-topic t] | |
1010 | ["Delete" gnus-topic-delete t] | |
1011 | ["Rename" gnus-topic-rename t] | |
1012 | ["Create" gnus-topic-create-topic t] | |
1013 | ["Mark" gnus-topic-mark-topic t] | |
a8151ef7 | 1014 | ["Indent" gnus-topic-indent t] |
16409b0b | 1015 | ["Sort" gnus-topic-sort-topics t] |
a8151ef7 LMI |
1016 | ["Toggle hide empty" gnus-topic-toggle-display-empty-topics t] |
1017 | ["Edit parameters" gnus-topic-edit-parameters t]) | |
eec82323 LMI |
1018 | ["List active" gnus-topic-list-active t])))) |
1019 | ||
1020 | (defun gnus-topic-mode (&optional arg redisplay) | |
1021 | "Minor mode for topicsifying Gnus group buffers." | |
1022 | (interactive (list current-prefix-arg t)) | |
1023 | (when (eq major-mode 'gnus-group-mode) | |
1024 | (make-local-variable 'gnus-topic-mode) | |
1025 | (setq gnus-topic-mode | |
1026 | (if (null arg) (not gnus-topic-mode) | |
1027 | (> (prefix-numeric-value arg) 0))) | |
1028 | ;; Infest Gnus with topics. | |
16409b0b | 1029 | (if (not gnus-topic-mode) |
6748645f | 1030 | (setq gnus-goto-missing-group-function nil) |
eec82323 LMI |
1031 | (when (gnus-visual-p 'topic-menu 'menu) |
1032 | (gnus-topic-make-menu-bar)) | |
6748645f | 1033 | (gnus-set-format 'topic t) |
16409b0b GM |
1034 | (gnus-add-minor-mode 'gnus-topic-mode " Topic" |
1035 | gnus-topic-mode-map nil (lambda (&rest junk) | |
1036 | (interactive) | |
1037 | (gnus-topic-mode nil t))) | |
eec82323 LMI |
1038 | (add-hook 'gnus-group-catchup-group-hook 'gnus-topic-update-topic) |
1039 | (set (make-local-variable 'gnus-group-prepare-function) | |
1040 | 'gnus-group-prepare-topics) | |
1041 | (set (make-local-variable 'gnus-group-get-parameter-function) | |
1042 | 'gnus-group-topic-parameters) | |
1043 | (set (make-local-variable 'gnus-group-goto-next-group-function) | |
1044 | 'gnus-topic-goto-next-group) | |
1045 | (set (make-local-variable 'gnus-group-indentation-function) | |
1046 | 'gnus-topic-group-indentation) | |
1047 | (set (make-local-variable 'gnus-group-update-group-function) | |
1048 | 'gnus-topic-update-topics-containing-group) | |
1049 | (set (make-local-variable 'gnus-group-sort-alist-function) | |
1050 | 'gnus-group-sort-topic) | |
1051 | (setq gnus-group-change-level-function 'gnus-topic-change-level) | |
1052 | (setq gnus-goto-missing-group-function 'gnus-topic-goto-missing-group) | |
1053 | (make-local-hook 'gnus-check-bogus-groups-hook) | |
1054 | (add-hook 'gnus-check-bogus-groups-hook 'gnus-topic-clean-alist) | |
1055 | (setq gnus-topology-checked-p nil) | |
1056 | ;; We check the topology. | |
1057 | (when gnus-newsrc-alist | |
1058 | (gnus-topic-check-topology)) | |
6748645f | 1059 | (gnus-run-hooks 'gnus-topic-mode-hook)) |
eec82323 LMI |
1060 | ;; Remove topic infestation. |
1061 | (unless gnus-topic-mode | |
1062 | (remove-hook 'gnus-summary-exit-hook 'gnus-topic-update-topic) | |
7cd26120 | 1063 | (setq gnus-group-change-level-function nil) |
eec82323 LMI |
1064 | (remove-hook 'gnus-check-bogus-groups-hook 'gnus-topic-clean-alist) |
1065 | (setq gnus-group-prepare-function 'gnus-group-prepare-flat) | |
1066 | (setq gnus-group-sort-alist-function 'gnus-group-sort-flat)) | |
1067 | (when redisplay | |
1068 | (gnus-group-list-groups)))) | |
1069 | ||
1070 | (defun gnus-topic-select-group (&optional all) | |
1071 | "Select this newsgroup. | |
1072 | No article is selected automatically. | |
1073 | If ALL is non-nil, already read articles become readable. | |
1074 | If ALL is a number, fetch this number of articles. | |
1075 | ||
1076 | If performed over a topic line, toggle folding the topic." | |
1077 | (interactive "P") | |
1078 | (if (gnus-group-topic-p) | |
1079 | (let ((gnus-group-list-mode | |
1080 | (if all (cons (if (numberp all) all 7) t) gnus-group-list-mode))) | |
16409b0b GM |
1081 | (gnus-topic-fold all) |
1082 | (gnus-dribble-touch)) | |
eec82323 LMI |
1083 | (gnus-group-select-group all))) |
1084 | ||
1085 | (defun gnus-mouse-pick-topic (e) | |
1086 | "Select the group or topic under the mouse pointer." | |
1087 | (interactive "e") | |
1088 | (mouse-set-point e) | |
1089 | (gnus-topic-read-group nil)) | |
1090 | ||
16409b0b GM |
1091 | (defun gnus-topic-expire-articles (topic) |
1092 | "Expire articles in this topic or group." | |
1093 | (interactive (list (gnus-group-topic-name))) | |
1094 | (if (not topic) | |
1095 | (call-interactively 'gnus-group-expire-articles) | |
1096 | (save-excursion | |
1097 | (gnus-message 5 "Expiring groups in %s..." topic) | |
1098 | (let ((gnus-group-marked | |
1099 | (mapcar (lambda (entry) (car (nth 2 entry))) | |
1100 | (gnus-topic-find-groups topic gnus-level-killed t)))) | |
1101 | (gnus-group-expire-articles nil)) | |
1102 | (gnus-message 5 "Expiring groups in %s...done" topic)))) | |
1103 | ||
eec82323 LMI |
1104 | (defun gnus-topic-read-group (&optional all no-article group) |
1105 | "Read news in this newsgroup. | |
1106 | If the prefix argument ALL is non-nil, already read articles become | |
1107 | readable. IF ALL is a number, fetch this number of articles. If the | |
1108 | optional argument NO-ARTICLE is non-nil, no article will be | |
1109 | auto-selected upon group entry. If GROUP is non-nil, fetch that | |
1110 | group. | |
1111 | ||
1112 | If performed over a topic line, toggle folding the topic." | |
1113 | (interactive "P") | |
1114 | (if (gnus-group-topic-p) | |
1115 | (let ((gnus-group-list-mode | |
1116 | (if all (cons (if (numberp all) all 7) t) gnus-group-list-mode))) | |
1117 | (gnus-topic-fold all)) | |
1118 | (gnus-group-read-group all no-article group))) | |
1119 | ||
1120 | (defun gnus-topic-create-topic (topic parent &optional previous full-topic) | |
a8151ef7 LMI |
1121 | "Create a new TOPIC under PARENT. |
1122 | When used interactively, PARENT will be the topic under point." | |
eec82323 LMI |
1123 | (interactive |
1124 | (list | |
1125 | (read-string "New topic: ") | |
1126 | (gnus-current-topic))) | |
1127 | ;; Check whether this topic already exists. | |
1128 | (when (gnus-topic-find-topology topic) | |
1129 | (error "Topic already exists")) | |
1130 | (unless parent | |
1131 | (setq parent (caar gnus-topic-topology))) | |
1132 | (let ((top (cdr (gnus-topic-find-topology parent))) | |
84169620 | 1133 | (full-topic (or full-topic (list (list topic 'visible nil nil))))) |
eec82323 LMI |
1134 | (unless top |
1135 | (error "No such parent topic: %s" parent)) | |
1136 | (if previous | |
1137 | (progn | |
1138 | (while (and (cdr top) | |
1139 | (not (equal (caaadr top) previous))) | |
1140 | (setq top (cdr top))) | |
1141 | (setcdr top (cons full-topic (cdr top)))) | |
1142 | (nconc top (list full-topic))) | |
1143 | (unless (assoc topic gnus-topic-alist) | |
1144 | (push (list topic) gnus-topic-alist))) | |
1145 | (gnus-topic-enter-dribble) | |
1146 | (gnus-group-list-groups) | |
1147 | (gnus-topic-goto-topic topic)) | |
1148 | ||
a1506d29 JB |
1149 | ;; FIXME: |
1150 | ;; 1. When the marked groups are overlapped with the process | |
16409b0b | 1151 | ;; region, the behavior of move or remove is not right. |
a1506d29 | 1152 | ;; 2. Can't process on several marked groups with a same name, |
16409b0b GM |
1153 | ;; because gnus-group-marked only keeps one copy. |
1154 | ||
eec82323 LMI |
1155 | (defun gnus-topic-move-group (n topic &optional copyp) |
1156 | "Move the next N groups to TOPIC. | |
1157 | If COPYP, copy the groups instead." | |
1158 | (interactive | |
1159 | (list current-prefix-arg | |
1160 | (completing-read "Move to topic: " gnus-topic-alist nil t))) | |
a1506d29 | 1161 | (let ((use-marked (and (not n) (not (gnus-region-active-p)) |
16409b0b GM |
1162 | gnus-group-marked t)) |
1163 | (groups (gnus-group-process-prefix n)) | |
eec82323 | 1164 | (topicl (assoc topic gnus-topic-alist)) |
eec82323 | 1165 | (start-topic (gnus-group-topic-name)) |
16409b0b | 1166 | (start-group (progn (forward-line 1) (gnus-group-group-name))) |
eec82323 | 1167 | entry) |
16409b0b GM |
1168 | (if (and (not groups) (not copyp) start-topic) |
1169 | (gnus-topic-move start-topic topic) | |
1170 | (mapcar | |
1171 | (lambda (g) | |
1172 | (gnus-group-remove-mark g use-marked) | |
1173 | (when (and | |
1174 | (setq entry (assoc (gnus-current-topic) gnus-topic-alist)) | |
1175 | (not copyp)) | |
1176 | (setcdr entry (gnus-delete-first g (cdr entry)))) | |
1177 | (nconc topicl (list g))) | |
1178 | groups) | |
1179 | (gnus-topic-enter-dribble) | |
1180 | (if start-group | |
1181 | (gnus-group-goto-group start-group) | |
1182 | (gnus-topic-goto-topic start-topic)) | |
1183 | (gnus-group-list-groups)))) | |
eec82323 | 1184 | |
16409b0b | 1185 | (defun gnus-topic-remove-group (&optional n) |
eec82323 LMI |
1186 | "Remove the current group from the topic." |
1187 | (interactive "P") | |
a1506d29 | 1188 | (let ((use-marked (and (not n) (not (gnus-region-active-p)) |
16409b0b GM |
1189 | gnus-group-marked t)) |
1190 | (groups (gnus-group-process-prefix n))) | |
1191 | (mapcar | |
1192 | (lambda (group) | |
1193 | (gnus-group-remove-mark group use-marked) | |
1194 | (let ((topicl (assoc (gnus-current-topic) gnus-topic-alist)) | |
1195 | (buffer-read-only nil)) | |
1196 | (when (and topicl group) | |
1197 | (gnus-delete-line) | |
1198 | (gnus-delete-first group topicl)) | |
1199 | (gnus-topic-update-topic))) | |
1200 | groups) | |
1201 | (gnus-topic-enter-dribble) | |
1202 | (gnus-group-position-point))) | |
eec82323 LMI |
1203 | |
1204 | (defun gnus-topic-copy-group (n topic) | |
1205 | "Copy the current group to a topic." | |
1206 | (interactive | |
1207 | (list current-prefix-arg | |
1208 | (completing-read "Copy to topic: " gnus-topic-alist nil t))) | |
1209 | (gnus-topic-move-group n topic t)) | |
1210 | ||
1211 | (defun gnus-topic-kill-group (&optional n discard) | |
1212 | "Kill the next N groups." | |
1213 | (interactive "P") | |
1214 | (if (gnus-group-topic-p) | |
1215 | (let ((topic (gnus-group-topic-name))) | |
1216 | (push (cons | |
1217 | (gnus-topic-find-topology topic) | |
1218 | (assoc topic gnus-topic-alist)) | |
1219 | gnus-topic-killed-topics) | |
1220 | (gnus-topic-remove-topic nil t) | |
1221 | (gnus-topic-find-topology topic nil nil gnus-topic-topology) | |
1222 | (gnus-topic-enter-dribble)) | |
1223 | (gnus-group-kill-group n discard) | |
16409b0b GM |
1224 | (if (not (gnus-group-topic-p)) |
1225 | (gnus-topic-update-topic) | |
1226 | ;; Move up one line so that we update the right topic. | |
1227 | (forward-line -1) | |
1228 | (gnus-topic-update-topic) | |
1229 | (forward-line 1)))) | |
eec82323 LMI |
1230 | |
1231 | (defun gnus-topic-yank-group (&optional arg) | |
1232 | "Yank the last topic." | |
1233 | (interactive "p") | |
1234 | (if gnus-topic-killed-topics | |
1235 | (let* ((previous | |
1236 | (or (gnus-group-topic-name) | |
1237 | (gnus-topic-next-topic (gnus-current-topic)))) | |
1238 | (data (pop gnus-topic-killed-topics)) | |
1239 | (alist (cdr data)) | |
1240 | (item (cdar data))) | |
1241 | (push alist gnus-topic-alist) | |
1242 | (gnus-topic-create-topic | |
1243 | (caar item) (gnus-topic-parent-topic previous) previous | |
1244 | item) | |
1245 | (gnus-topic-enter-dribble) | |
1246 | (gnus-topic-goto-topic (caar item))) | |
1247 | (let* ((prev (gnus-group-group-name)) | |
1248 | (gnus-topic-inhibit-change-level t) | |
1249 | (gnus-group-indentation | |
1250 | (make-string | |
1251 | (* gnus-topic-indent-level | |
1252 | (or (save-excursion | |
1253 | (gnus-topic-goto-topic (gnus-current-topic)) | |
1254 | (gnus-group-topic-level)) | |
1255 | 0)) | |
1256 | ? )) | |
1257 | yanked alist) | |
1258 | ;; We first yank the groups the normal way... | |
1259 | (setq yanked (gnus-group-yank-group arg)) | |
1260 | ;; Then we enter the yanked groups into the topics they belong | |
1261 | ;; to. | |
1262 | (setq alist (assoc (save-excursion | |
1263 | (forward-line -1) | |
1264 | (gnus-current-topic)) | |
1265 | gnus-topic-alist)) | |
1266 | (when (stringp yanked) | |
1267 | (setq yanked (list yanked))) | |
1268 | (if (not prev) | |
1269 | (nconc alist yanked) | |
1270 | (if (not (cdr alist)) | |
1271 | (setcdr alist (nconc yanked (cdr alist))) | |
1272 | (while (cdr alist) | |
1273 | (when (equal (cadr alist) prev) | |
1274 | (setcdr alist (nconc yanked (cdr alist))) | |
1275 | (setq alist nil)) | |
1276 | (setq alist (cdr alist)))))) | |
1277 | (gnus-topic-update-topic))) | |
1278 | ||
16409b0b GM |
1279 | (defun gnus-topic-hide-topic (&optional permanent) |
1280 | "Hide the current topic. | |
1281 | If PERMANENT, make it stay hidden in subsequent sessions as well." | |
1282 | (interactive "P") | |
eec82323 LMI |
1283 | (when (gnus-current-topic) |
1284 | (gnus-topic-goto-topic (gnus-current-topic)) | |
16409b0b | 1285 | (if permanent |
a1506d29 | 1286 | (setcar (cddr |
16409b0b GM |
1287 | (cadr |
1288 | (gnus-topic-find-topology (gnus-current-topic)))) | |
1289 | 'hidden)) | |
1290 | (gnus-topic-remove-topic nil nil))) | |
1291 | ||
1292 | (defun gnus-topic-show-topic (&optional permanent) | |
1293 | "Show the hidden topic. | |
1294 | If PERMANENT, make it stay shown in subsequent sessions as well." | |
1295 | (interactive "P") | |
eec82323 | 1296 | (when (gnus-group-topic-p) |
16409b0b GM |
1297 | (if (not permanent) |
1298 | (gnus-topic-remove-topic t nil) | |
a1506d29 JB |
1299 | (let ((topic |
1300 | (gnus-topic-find-topology | |
16409b0b GM |
1301 | (completing-read "Show topic: " gnus-topic-alist nil t)))) |
1302 | (setcar (cddr (cadr topic)) nil) | |
1303 | (setcar (cdr (cadr topic)) 'visible) | |
1304 | (gnus-group-list-groups))))) | |
eec82323 | 1305 | |
8b93df01 DL |
1306 | (defun gnus-topic-mark-topic (topic &optional unmark recursive) |
1307 | "Mark all groups in the TOPIC with the process mark. | |
1308 | If RECURSIVE is t, mark its subtopics too." | |
1309 | (interactive (list (gnus-group-topic-name) | |
1310 | nil | |
1311 | (and current-prefix-arg t))) | |
eec82323 LMI |
1312 | (if (not topic) |
1313 | (call-interactively 'gnus-group-mark-group) | |
1314 | (save-excursion | |
a1506d29 | 1315 | (let ((groups (gnus-topic-find-groups topic gnus-level-killed t nil |
8b93df01 | 1316 | recursive))) |
eec82323 LMI |
1317 | (while groups |
1318 | (funcall (if unmark 'gnus-group-remove-mark 'gnus-group-set-mark) | |
1319 | (gnus-info-group (nth 2 (pop groups))))))))) | |
1320 | ||
8b93df01 DL |
1321 | (defun gnus-topic-unmark-topic (topic &optional dummy recursive) |
1322 | "Remove the process mark from all groups in the TOPIC. | |
1323 | If RECURSIVE is t, unmark its subtopics too." | |
1324 | (interactive (list (gnus-group-topic-name) | |
1325 | nil | |
1326 | (and current-prefix-arg t))) | |
eec82323 LMI |
1327 | (if (not topic) |
1328 | (call-interactively 'gnus-group-unmark-group) | |
8b93df01 | 1329 | (gnus-topic-mark-topic topic t recursive))) |
eec82323 LMI |
1330 | |
1331 | (defun gnus-topic-get-new-news-this-topic (&optional n) | |
1332 | "Check for new news in the current topic." | |
1333 | (interactive "P") | |
1334 | (if (not (gnus-group-topic-p)) | |
1335 | (gnus-group-get-new-news-this-group n) | |
8b93df01 | 1336 | (gnus-topic-mark-topic (gnus-group-topic-name) nil (and n t)) |
eec82323 LMI |
1337 | (gnus-group-get-new-news-this-group))) |
1338 | ||
1339 | (defun gnus-topic-move-matching (regexp topic &optional copyp) | |
1340 | "Move all groups that match REGEXP to some topic." | |
1341 | (interactive | |
1342 | (let (topic) | |
1343 | (nreverse | |
1344 | (list | |
1345 | (setq topic (completing-read "Move to topic: " gnus-topic-alist nil t)) | |
1346 | (read-string (format "Move to %s (regexp): " topic)))))) | |
1347 | (gnus-group-mark-regexp regexp) | |
1348 | (gnus-topic-move-group nil topic copyp)) | |
1349 | ||
1350 | (defun gnus-topic-copy-matching (regexp topic &optional copyp) | |
1351 | "Copy all groups that match REGEXP to some topic." | |
1352 | (interactive | |
1353 | (let (topic) | |
1354 | (nreverse | |
1355 | (list | |
1356 | (setq topic (completing-read "Copy to topic: " gnus-topic-alist nil t)) | |
1357 | (read-string (format "Copy to %s (regexp): " topic)))))) | |
1358 | (gnus-topic-move-matching regexp topic t)) | |
1359 | ||
1360 | (defun gnus-topic-delete (topic) | |
1361 | "Delete a topic." | |
1362 | (interactive (list (gnus-group-topic-name))) | |
1363 | (unless topic | |
1364 | (error "No topic to be deleted")) | |
1365 | (let ((entry (assoc topic gnus-topic-alist)) | |
1366 | (buffer-read-only nil)) | |
1367 | (when (cdr entry) | |
1368 | (error "Topic not empty")) | |
1369 | ;; Delete if visible. | |
1370 | (when (gnus-topic-goto-topic topic) | |
1371 | (gnus-delete-line)) | |
1372 | ;; Remove from alist. | |
1373 | (setq gnus-topic-alist (delq entry gnus-topic-alist)) | |
1374 | ;; Remove from topology. | |
a8151ef7 LMI |
1375 | (gnus-topic-find-topology topic nil nil 'delete) |
1376 | (gnus-dribble-touch))) | |
eec82323 LMI |
1377 | |
1378 | (defun gnus-topic-rename (old-name new-name) | |
1379 | "Rename a topic." | |
1380 | (interactive | |
1381 | (let ((topic (gnus-current-topic))) | |
1382 | (list topic | |
1383 | (read-string (format "Rename %s to: " topic))))) | |
6748645f LMI |
1384 | ;; Check whether the new name exists. |
1385 | (when (gnus-topic-find-topology new-name) | |
1386 | (error "Topic '%s' already exists" new-name)) | |
1387 | ;; "nil" is an invalid name, for reasons I'd rather not go | |
1388 | ;; into here. Trust me. | |
1389 | (when (equal new-name "nil") | |
1390 | (error "Invalid name: %s" nil)) | |
1391 | ;; Do the renaming. | |
eec82323 LMI |
1392 | (let ((top (gnus-topic-find-topology old-name)) |
1393 | (entry (assoc old-name gnus-topic-alist))) | |
1394 | (when top | |
1395 | (setcar (cadr top) new-name)) | |
1396 | (when entry | |
1397 | (setcar entry new-name)) | |
1398 | (forward-line -1) | |
1399 | (gnus-dribble-touch) | |
6748645f LMI |
1400 | (gnus-group-list-groups) |
1401 | (forward-line 1))) | |
eec82323 LMI |
1402 | |
1403 | (defun gnus-topic-indent (&optional unindent) | |
1404 | "Indent a topic -- make it a sub-topic of the previous topic. | |
1405 | If UNINDENT, remove an indentation." | |
1406 | (interactive "P") | |
1407 | (if unindent | |
1408 | (gnus-topic-unindent) | |
1409 | (let* ((topic (gnus-current-topic)) | |
1410 | (parent (gnus-topic-previous-topic topic)) | |
1411 | (buffer-read-only nil)) | |
1412 | (unless parent | |
1413 | (error "Nothing to indent %s into" topic)) | |
1414 | (when topic | |
1415 | (gnus-topic-goto-topic topic) | |
1416 | (gnus-topic-kill-group) | |
1417 | (push (cdar gnus-topic-killed-topics) gnus-topic-alist) | |
1418 | (gnus-topic-create-topic | |
d942a83d | 1419 | topic parent nil (cdar (car gnus-topic-killed-topics))) |
eec82323 LMI |
1420 | (pop gnus-topic-killed-topics) |
1421 | (or (gnus-topic-goto-topic topic) | |
1422 | (gnus-topic-goto-topic parent)))))) | |
1423 | ||
1424 | (defun gnus-topic-unindent () | |
1425 | "Unindent a topic." | |
1426 | (interactive) | |
1427 | (let* ((topic (gnus-current-topic)) | |
1428 | (parent (gnus-topic-parent-topic topic)) | |
1429 | (grandparent (gnus-topic-parent-topic parent))) | |
1430 | (unless grandparent | |
1431 | (error "Nothing to indent %s into" topic)) | |
1432 | (when topic | |
1433 | (gnus-topic-goto-topic topic) | |
1434 | (gnus-topic-kill-group) | |
1435 | (push (cdar gnus-topic-killed-topics) gnus-topic-alist) | |
1436 | (gnus-topic-create-topic | |
1437 | topic grandparent (gnus-topic-next-topic parent) | |
d942a83d | 1438 | (cdar (car gnus-topic-killed-topics))) |
eec82323 LMI |
1439 | (pop gnus-topic-killed-topics) |
1440 | (gnus-topic-goto-topic topic)))) | |
1441 | ||
1442 | (defun gnus-topic-list-active (&optional force) | |
1443 | "List all groups that Gnus knows about in a topicsified fashion. | |
1444 | If FORCE, always re-read the active file." | |
1445 | (interactive "P") | |
1446 | (when force | |
1447 | (gnus-get-killed-groups)) | |
1448 | (gnus-topic-grok-active force) | |
1449 | (let ((gnus-topic-topology gnus-topic-active-topology) | |
1450 | (gnus-topic-alist gnus-topic-active-alist) | |
1451 | gnus-killed-list gnus-zombie-list) | |
6748645f | 1452 | (gnus-group-list-groups gnus-level-killed nil 1))) |
eec82323 | 1453 | |
a8151ef7 LMI |
1454 | (defun gnus-topic-toggle-display-empty-topics () |
1455 | "Show/hide topics that have no unread articles." | |
1456 | (interactive) | |
1457 | (setq gnus-topic-display-empty-topics | |
1458 | (not gnus-topic-display-empty-topics)) | |
1459 | (gnus-group-list-groups) | |
1460 | (message "%s empty topics" | |
1461 | (if gnus-topic-display-empty-topics | |
1462 | "Showing" "Hiding"))) | |
1463 | ||
eec82323 LMI |
1464 | ;;; Topic sorting functions |
1465 | ||
1466 | (defun gnus-topic-edit-parameters (group) | |
1467 | "Edit the group parameters of GROUP. | |
1468 | If performed on a topic, edit the topic parameters instead." | |
1469 | (interactive (list (gnus-group-group-name))) | |
1470 | (if group | |
1471 | (gnus-group-edit-group-parameters group) | |
1472 | (if (not (gnus-group-topic-p)) | |
a8151ef7 | 1473 | (error "Nothing to edit on the current line") |
eec82323 LMI |
1474 | (let ((topic (gnus-group-topic-name))) |
1475 | (gnus-edit-form | |
1476 | (gnus-topic-parameters topic) | |
1477 | (format "Editing the topic parameters for `%s'." | |
1478 | (or group topic)) | |
1479 | `(lambda (form) | |
1480 | (gnus-topic-set-parameters ,topic form))))))) | |
1481 | ||
1482 | (defun gnus-group-sort-topic (func reverse) | |
1483 | "Sort groups in the topics according to FUNC and REVERSE." | |
1484 | (let ((alist gnus-topic-alist)) | |
1485 | (while alist | |
1486 | ;; !!!Sometimes nil elements sneak into the alist, | |
1487 | ;; for some reason or other. | |
1488 | (setcar alist (delq nil (car alist))) | |
1489 | (setcar alist (delete "dummy.group" (car alist))) | |
1490 | (gnus-topic-sort-topic (pop alist) func reverse)))) | |
1491 | ||
1492 | (defun gnus-topic-sort-topic (topic func reverse) | |
1493 | ;; Each topic only lists the name of the group, while | |
1494 | ;; the sort predicates expect group infos as inputs. | |
1495 | ;; So we first transform the group names into infos, | |
1496 | ;; then sort, and then transform back into group names. | |
1497 | (setcdr | |
1498 | topic | |
1499 | (mapcar | |
1500 | (lambda (info) (gnus-info-group info)) | |
1501 | (sort | |
1502 | (mapcar | |
1503 | (lambda (group) (gnus-get-info group)) | |
1504 | (cdr topic)) | |
1505 | func))) | |
1506 | ;; Do the reversal, if necessary. | |
1507 | (when reverse | |
1508 | (setcdr topic (nreverse (cdr topic))))) | |
1509 | ||
1510 | (defun gnus-topic-sort-groups (func &optional reverse) | |
1511 | "Sort the current topic according to FUNC. | |
1512 | If REVERSE, reverse the sorting order." | |
1513 | (interactive (list gnus-group-sort-function current-prefix-arg)) | |
1514 | (let ((topic (assoc (gnus-current-topic) gnus-topic-alist))) | |
1515 | (gnus-topic-sort-topic | |
1516 | topic (gnus-make-sort-function func) reverse) | |
1517 | (gnus-group-list-groups))) | |
1518 | ||
1519 | (defun gnus-topic-sort-groups-by-alphabet (&optional reverse) | |
1520 | "Sort the current topic alphabetically by group name. | |
1521 | If REVERSE, sort in reverse order." | |
1522 | (interactive "P") | |
1523 | (gnus-topic-sort-groups 'gnus-group-sort-by-alphabet reverse)) | |
1524 | ||
1525 | (defun gnus-topic-sort-groups-by-unread (&optional reverse) | |
1526 | "Sort the current topic by number of unread articles. | |
1527 | If REVERSE, sort in reverse order." | |
1528 | (interactive "P") | |
1529 | (gnus-topic-sort-groups 'gnus-group-sort-by-unread reverse)) | |
1530 | ||
1531 | (defun gnus-topic-sort-groups-by-level (&optional reverse) | |
1532 | "Sort the current topic by group level. | |
1533 | If REVERSE, sort in reverse order." | |
1534 | (interactive "P") | |
1535 | (gnus-topic-sort-groups 'gnus-group-sort-by-level reverse)) | |
1536 | ||
1537 | (defun gnus-topic-sort-groups-by-score (&optional reverse) | |
1538 | "Sort the current topic by group score. | |
1539 | If REVERSE, sort in reverse order." | |
1540 | (interactive "P") | |
1541 | (gnus-topic-sort-groups 'gnus-group-sort-by-score reverse)) | |
1542 | ||
1543 | (defun gnus-topic-sort-groups-by-rank (&optional reverse) | |
1544 | "Sort the current topic by group rank. | |
1545 | If REVERSE, sort in reverse order." | |
1546 | (interactive "P") | |
1547 | (gnus-topic-sort-groups 'gnus-group-sort-by-rank reverse)) | |
1548 | ||
1549 | (defun gnus-topic-sort-groups-by-method (&optional reverse) | |
1550 | "Sort the current topic alphabetically by backend name. | |
1551 | If REVERSE, sort in reverse order." | |
1552 | (interactive "P") | |
1553 | (gnus-topic-sort-groups 'gnus-group-sort-by-method reverse)) | |
1554 | ||
16409b0b GM |
1555 | (defun gnus-topic-sort-topics-1 (top reverse) |
1556 | (if (cdr top) | |
1557 | (let ((subtop | |
1558 | (mapcar `(lambda (top) | |
1559 | (gnus-topic-sort-topics-1 top ,reverse)) | |
1560 | (sort (cdr top) | |
a1506d29 | 1561 | '(lambda (t1 t2) |
16409b0b GM |
1562 | (string-lessp (caar t1) (caar t2))))))) |
1563 | (setcdr top (if reverse (reverse subtop) subtop)))) | |
1564 | top) | |
1565 | ||
1566 | (defun gnus-topic-sort-topics (&optional topic reverse) | |
8f688cb0 | 1567 | "Sort topics in TOPIC alphabetically by topic name. |
16409b0b | 1568 | If REVERSE, reverse the sorting order." |
a1506d29 JB |
1569 | (interactive |
1570 | (list (completing-read "Sort topics in : " gnus-topic-alist nil t | |
16409b0b GM |
1571 | (gnus-current-topic)) |
1572 | current-prefix-arg)) | |
1573 | (let ((topic-topology (or (and topic (cdr (gnus-topic-find-topology topic))) | |
1574 | gnus-topic-topology))) | |
1575 | (gnus-topic-sort-topics-1 topic-topology reverse) | |
1576 | (gnus-topic-enter-dribble) | |
1577 | (gnus-group-list-groups) | |
1578 | (gnus-topic-goto-topic topic))) | |
1579 | ||
1580 | (defun gnus-topic-move (current to) | |
1581 | "Move the CURRENT topic to TO." | |
a1506d29 JB |
1582 | (interactive |
1583 | (list | |
16409b0b GM |
1584 | (gnus-group-topic-name) |
1585 | (completing-read "Move to topic: " gnus-topic-alist nil t))) | |
1586 | (unless (and current to) | |
1587 | (error "Can't find topic")) | |
1588 | (let ((current-top (cdr (gnus-topic-find-topology current))) | |
1589 | (to-top (cdr (gnus-topic-find-topology to)))) | |
1590 | (unless current-top | |
1591 | (error "Can't find topic `%s'" current)) | |
1592 | (unless to-top | |
1593 | (error "Can't find topic `%s'" to)) | |
1594 | (if (gnus-topic-find-topology to current-top 0);; Don't care the level | |
1595 | (error "Can't move `%s' to its sub-level" current)) | |
1596 | (gnus-topic-find-topology current nil nil 'delete) | |
1597 | (while (cdr to-top) | |
1598 | (setq to-top (cdr to-top))) | |
1599 | (setcdr to-top (list current-top)) | |
1600 | (gnus-topic-enter-dribble) | |
1601 | (gnus-group-list-groups) | |
1602 | (gnus-topic-goto-topic current))) | |
1603 | ||
1604 | (defun gnus-subscribe-topics (newsgroup) | |
1605 | (catch 'end | |
1606 | (let (match gnus-group-change-level-function) | |
1607 | (dolist (topic (gnus-topic-list)) | |
1608 | (when (and (setq match (cdr (assq 'subscribe | |
1609 | (gnus-topic-parameters topic)))) | |
1610 | (string-match match newsgroup)) | |
1611 | ;; Just subscribe the group. | |
1612 | (gnus-subscribe-alphabetically newsgroup) | |
1613 | ;; Add the group to the topic. | |
1614 | (nconc (assoc topic gnus-topic-alist) (list newsgroup)) | |
1615 | (throw 'end t)))))) | |
a1506d29 | 1616 | |
eec82323 LMI |
1617 | (provide 'gnus-topic) |
1618 | ||
ab5796a9 | 1619 | ;;; arch-tag: bf176856-f30c-40f0-ae77-e41529a1134c |
eec82323 | 1620 | ;;; gnus-topic.el ends here |