HCoop / bpt / emacs.git / blame
| Commit | Line | Data |
|---|---|---|
| eec82323 | 1 | ;;; gnus-topic.el --- a folding minor mode for Gnus group buffers |
| 6748645f | 2 | ;; Copyright (C) 1995,96,97,98 Free Software Foundation, Inc. |
| eec82323 LMI |
3 | |
| 4 | ;; Author: Ilja Weis <kult@uni-paderborn.de> | |
| 6748645f | 5 | ;; Lars Magne Ingebrigtsen <larsi@gnus.org> |
| eec82323 LMI |
6 | ;; Keywords: news |
| 7 | ||
| 8 | ;; This file is part of GNU Emacs. | |
| 9 | ||
| 10 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
| 11 | ;; it under the terms of the GNU General Public License as published by | |
| 12 | ;; the Free Software Foundation; either version 2, or (at your option) | |
| 13 | ;; any later version. | |
| 14 | ||
| 15 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
| 16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 18 | ;; GNU General Public License for more details. | |
| 19 | ||
| 20 | ;; You should have received a copy of the GNU General Public License | |
| 21 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
| 22 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 23 | ;; Boston, MA 02111-1307, USA. | |
| 24 | ||
| 25 | ;;; Commentary: | |
| 26 | ||
| 27 | ;;; Code: | |
| 28 | ||
| 5ab7173c RS |
29 | (eval-when-compile (require 'cl)) |
| 30 | ||
| 6748645f LMI |
31 | (eval-when-compile (require 'cl)) |
| 32 | ||
| eec82323 LMI |
33 | (require 'gnus) |
| 34 | (require 'gnus-group) | |
| 35 | (require 'gnus-start) | |
| 6748645f | 36 | (require 'gnus-util) |
| eec82323 LMI |
37 | |
| 38 | (defgroup gnus-topic nil | |
| 39 | "Group topics." | |
| 40 | :group 'gnus-group) | |
| 41 | ||
| 42 | (defvar gnus-topic-mode nil | |
| 43 | "Minor mode for Gnus group buffers.") | |
| 44 | ||
| 45 | (defcustom gnus-topic-mode-hook nil | |
| 46 | "Hook run in topic mode buffers." | |
| 47 | :type 'hook | |
| 48 | :group 'gnus-topic) | |
| 49 | ||
| 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. | |
| 61 | " | |
| 62 | :type 'string | |
| 63 | :group 'gnus-topic) | |
| 64 | ||
| 65 | (defcustom gnus-topic-indent-level 2 | |
| 66 | "*How much each subtopic should be indented." | |
| 67 | :type 'integer | |
| 68 | :group 'gnus-topic) | |
| 69 | ||
| 70 | (defcustom gnus-topic-display-empty-topics t | |
| 71 | "*If non-nil, display the topic lines even of topics that have no unread articles." | |
| 72 | :type 'boolean | |
| 73 | :group 'gnus-topic) | |
| 74 | ||
| 75 | ;; Internal variables. | |
| 76 | ||
| 77 | (defvar gnus-topic-active-topology nil) | |
| 78 | (defvar gnus-topic-active-alist nil) | |
| 6748645f | 79 | (defvar gnus-topic-unreads nil) |
| eec82323 LMI |
80 | |
| 81 | (defvar gnus-topology-checked-p nil | |
| 82 | "Whether the topology has been checked in this session.") | |
| 83 | ||
| 84 | (defvar gnus-topic-killed-topics nil) | |
| 85 | (defvar gnus-topic-inhibit-change-level nil) | |
| eec82323 LMI |
86 | |
| 87 | (defconst gnus-topic-line-format-alist | |
| 88 | `((?n name ?s) | |
| 89 | (?v visible ?s) | |
| 90 | (?i indentation ?s) | |
| 91 | (?g number-of-groups ?d) | |
| 92 | (?a (gnus-topic-articles-in-topic entries) ?d) | |
| 93 | (?A total-number-of-articles ?d) | |
| 94 | (?l level ?d))) | |
| 95 | ||
| 96 | (defvar gnus-topic-line-format-spec nil) | |
| 97 | ||
| 98 | ;;; Utility functions | |
| 99 | ||
| 100 | (defun gnus-group-topic-name () | |
| 101 | "The name of the topic on the current line." | |
| 102 | (let ((topic (get-text-property (gnus-point-at-bol) 'gnus-topic))) | |
| 103 | (and topic (symbol-name topic)))) | |
| 104 | ||
| 105 | (defun gnus-group-topic-level () | |
| 106 | "The level of the topic on the current line." | |
| 107 | (get-text-property (gnus-point-at-bol) 'gnus-topic-level)) | |
| 108 | ||
| 109 | (defun gnus-group-topic-unread () | |
| 110 | "The number of unread articles in topic on the current line." | |
| 111 | (get-text-property (gnus-point-at-bol) 'gnus-topic-unread)) | |
| 112 | ||
| 113 | (defun gnus-topic-unread (topic) | |
| 114 | "Return the number of unread articles in TOPIC." | |
| 6748645f | 115 | (or (cdr (assoc topic gnus-topic-unreads)) |
| eec82323 LMI |
116 | 0)) |
| 117 | ||
| 118 | (defun gnus-group-topic-p () | |
| 119 | "Return non-nil if the current line is a topic." | |
| 120 | (gnus-group-topic-name)) | |
| 121 | ||
| 122 | (defun gnus-topic-visible-p () | |
| 123 | "Return non-nil if the current topic is visible." | |
| 124 | (get-text-property (gnus-point-at-bol) 'gnus-topic-visible)) | |
| 125 | ||
| 126 | (defun gnus-topic-articles-in-topic (entries) | |
| 127 | (let ((total 0) | |
| 128 | number) | |
| 129 | (while entries | |
| 130 | (when (numberp (setq number (car (pop entries)))) | |
| 131 | (incf total number))) | |
| 132 | total)) | |
| 133 | ||
| 134 | (defun gnus-group-topic (group) | |
| 135 | "Return the topic GROUP is a member of." | |
| 136 | (let ((alist gnus-topic-alist) | |
| 137 | out) | |
| 138 | (while alist | |
| 139 | (when (member group (cdar alist)) | |
| 140 | (setq out (caar alist) | |
| 141 | alist nil)) | |
| 142 | (setq alist (cdr alist))) | |
| 143 | out)) | |
| 144 | ||
| 145 | (defun gnus-group-parent-topic (group) | |
| 146 | "Return the topic GROUP is member of by looking at the group buffer." | |
| 147 | (save-excursion | |
| 148 | (set-buffer gnus-group-buffer) | |
| 149 | (if (gnus-group-goto-group group) | |
| 150 | (gnus-current-topic) | |
| 151 | (gnus-group-topic group)))) | |
| 152 | ||
| 153 | (defun gnus-topic-goto-topic (topic) | |
| 154 | "Go to TOPIC." | |
| 155 | (when topic | |
| 156 | (gnus-goto-char (text-property-any (point-min) (point-max) | |
| 157 | 'gnus-topic (intern topic))))) | |
| 158 | ||
| 159 | (defun gnus-current-topic () | |
| 160 | "Return the name of the current topic." | |
| 161 | (let ((result | |
| 162 | (or (get-text-property (point) 'gnus-topic) | |
| 163 | (save-excursion | |
| 164 | (and (gnus-goto-char (previous-single-property-change | |
| 165 | (point) 'gnus-topic)) | |
| 166 | (get-text-property (max (1- (point)) (point-min)) | |
| 167 | 'gnus-topic)))))) | |
| 168 | (when result | |
| 169 | (symbol-name result)))) | |
| 170 | ||
| 6748645f LMI |
171 | (defun gnus-current-topics (&optional topic) |
| 172 | "Return a list of all current topics, lowest in hierarchy first. | |
| 173 | If TOPIC, start with that topic." | |
| 174 | (let ((topic (or topic (gnus-current-topic))) | |
| eec82323 LMI |
175 | topics) |
| 176 | (while topic | |
| 177 | (push topic topics) | |
| 178 | (setq topic (gnus-topic-parent-topic topic))) | |
| 179 | (nreverse topics))) | |
| 180 | ||
| 181 | (defun gnus-group-active-topic-p () | |
| 182 | "Say whether the current topic comes from the active topics." | |
| 183 | (save-excursion | |
| 184 | (beginning-of-line) | |
| 185 | (get-text-property (point) 'gnus-active))) | |
| 186 | ||
| 6748645f | 187 | (defun gnus-topic-find-groups (topic &optional level all lowest) |
| eec82323 LMI |
188 | "Return entries for all visible groups in TOPIC." |
| 189 | (let ((groups (cdr (assoc topic gnus-topic-alist))) | |
| 6748645f | 190 | info clevel unread group params visible-groups entry active) |
| eec82323 | 191 | (setq lowest (or lowest 1)) |
| 6748645f | 192 | (setq level (or level gnus-level-unsubscribed)) |
| eec82323 LMI |
193 | ;; We go through the newsrc to look for matches. |
| 194 | (while groups | |
| 195 | (when (setq group (pop groups)) | |
| 196 | (setq entry (gnus-gethash group gnus-newsrc-hashtb) | |
| 197 | info (nth 2 entry) | |
| 198 | params (gnus-info-params info) | |
| 199 | active (gnus-active group) | |
| 200 | unread (or (car entry) | |
| 201 | (and (not (equal group "dummy.group")) | |
| 202 | active | |
| 203 | (- (1+ (cdr active)) (car active)))) | |
| 204 | clevel (or (gnus-info-level info) | |
| 6748645f LMI |
205 | (if (member group gnus-zombie-list) |
| 206 | gnus-level-zombie gnus-level-killed)))) | |
| eec82323 LMI |
207 | (and |
| 208 | unread ; nil means that the group is dead. | |
| 209 | (<= clevel level) | |
| 210 | (>= clevel lowest) ; Is inside the level we want. | |
| 211 | (or all | |
| 212 | (if (eq unread t) | |
| 213 | gnus-group-list-inactive-groups | |
| 214 | (> unread 0)) | |
| 215 | (and gnus-list-groups-with-ticked-articles | |
| 216 | (cdr (assq 'tick (gnus-info-marks info)))) | |
| 217 | ; Has right readedness. | |
| 218 | ;; Check for permanent visibility. | |
| 219 | (and gnus-permanently-visible-groups | |
| 220 | (string-match gnus-permanently-visible-groups group)) | |
| 221 | (memq 'visible params) | |
| 222 | (cdr (assq 'visible params))) | |
| 223 | ;; Add this group to the list of visible groups. | |
| 224 | (push (or entry group) visible-groups))) | |
| 225 | (nreverse visible-groups))) | |
| 226 | ||
| 227 | (defun gnus-topic-previous-topic (topic) | |
| 228 | "Return the previous topic on the same level as TOPIC." | |
| 229 | (let ((top (cddr (gnus-topic-find-topology | |
| 230 | (gnus-topic-parent-topic topic))))) | |
| 231 | (unless (equal topic (caaar top)) | |
| 232 | (while (and top (not (equal (caaadr top) topic))) | |
| 233 | (setq top (cdr top))) | |
| 234 | (caaar top)))) | |
| 235 | ||
| 236 | (defun gnus-topic-parent-topic (topic &optional topology) | |
| 237 | "Return the parent of TOPIC." | |
| 238 | (unless topology | |
| 239 | (setq topology gnus-topic-topology)) | |
| 240 | (let ((parent (car (pop topology))) | |
| 241 | result found) | |
| 242 | (while (and topology | |
| 243 | (not (setq found (equal (caaar topology) topic))) | |
| 244 | (not (setq result (gnus-topic-parent-topic | |
| 245 | topic (car topology))))) | |
| 246 | (setq topology (cdr topology))) | |
| 247 | (or result (and found parent)))) | |
| 248 | ||
| 249 | (defun gnus-topic-next-topic (topic &optional previous) | |
| 250 | "Return the next sibling of TOPIC." | |
| 251 | (let ((parentt (cddr (gnus-topic-find-topology | |
| 252 | (gnus-topic-parent-topic topic)))) | |
| 253 | prev) | |
| 254 | (while (and parentt | |
| 255 | (not (equal (caaar parentt) topic))) | |
| 256 | (setq prev (caaar parentt) | |
| 257 | parentt (cdr parentt))) | |
| 258 | (if previous | |
| 259 | prev | |
| 260 | (caaadr parentt)))) | |
| 261 | ||
| 262 | (defun gnus-topic-forward-topic (num) | |
| 263 | "Go to the next topic on the same level as the current one." | |
| 264 | (let* ((topic (gnus-current-topic)) | |
| 265 | (way (if (< num 0) 'gnus-topic-previous-topic | |
| 266 | 'gnus-topic-next-topic)) | |
| 267 | (num (abs num))) | |
| 268 | (while (and (not (zerop num)) | |
| 269 | (setq topic (funcall way topic))) | |
| 270 | (when (gnus-topic-goto-topic topic) | |
| 271 | (decf num))) | |
| 272 | (unless (zerop num) | |
| 273 | (goto-char (point-max))) | |
| 274 | num)) | |
| 275 | ||
| 276 | (defun gnus-topic-find-topology (topic &optional topology level remove) | |
| 277 | "Return the topology of TOPIC." | |
| 278 | (unless topology | |
| 279 | (setq topology gnus-topic-topology) | |
| 280 | (setq level 0)) | |
| 281 | (let ((top topology) | |
| 282 | result) | |
| 283 | (if (equal (caar topology) topic) | |
| 284 | (progn | |
| 285 | (when remove | |
| 286 | (delq topology remove)) | |
| 287 | (cons level topology)) | |
| 288 | (setq topology (cdr topology)) | |
| 289 | (while (and topology | |
| 290 | (not (setq result (gnus-topic-find-topology | |
| 291 | topic (car topology) (1+ level) | |
| 292 | (and remove top))))) | |
| 293 | (setq topology (cdr topology))) | |
| 294 | result))) | |
| 295 | ||
| 296 | (defvar gnus-tmp-topics nil) | |
| 297 | (defun gnus-topic-list (&optional topology) | |
| 298 | "Return a list of all topics in the topology." | |
| 299 | (unless topology | |
| 300 | (setq topology gnus-topic-topology | |
| 301 | gnus-tmp-topics nil)) | |
| 302 | (push (caar topology) gnus-tmp-topics) | |
| 303 | (mapcar 'gnus-topic-list (cdr topology)) | |
| 304 | gnus-tmp-topics) | |
| 305 | ||
| 306 | ;;; Topic parameter jazz | |
| 307 | ||
| 308 | (defun gnus-topic-parameters (topic) | |
| 309 | "Return the parameters for TOPIC." | |
| 310 | (let ((top (gnus-topic-find-topology topic))) | |
| 311 | (when top | |
| 312 | (nth 3 (cadr top))))) | |
| 313 | ||
| 314 | (defun gnus-topic-set-parameters (topic parameters) | |
| 315 | "Set the topic parameters of TOPIC to PARAMETERS." | |
| 316 | (let ((top (gnus-topic-find-topology topic))) | |
| 317 | (unless top | |
| 318 | (error "No such topic: %s" topic)) | |
| 319 | ;; We may have to extend if there is no parameters here | |
| 320 | ;; to begin with. | |
| 321 | (unless (nthcdr 2 (cadr top)) | |
| 322 | (nconc (cadr top) (list nil))) | |
| 323 | (unless (nthcdr 3 (cadr top)) | |
| 324 | (nconc (cadr top) (list nil))) | |
| 325 | (setcar (nthcdr 3 (cadr top)) parameters) | |
| 326 | (gnus-dribble-enter | |
| 327 | (format "(gnus-topic-set-parameters %S '%S)" topic parameters)))) | |
| 328 | ||
| 329 | (defun gnus-group-topic-parameters (group) | |
| 330 | "Compute the group parameters for GROUP taking into account inheritance from topics." | |
| 6748645f | 331 | (let ((params-list (copy-sequence (gnus-group-get-parameter group)))) |
| eec82323 LMI |
332 | (save-excursion |
| 333 | (gnus-group-goto-group group) | |
| 6748645f LMI |
334 | (nconc params-list |
| 335 | (gnus-topic-hierarchical-parameters (gnus-current-topic)))))) | |
| 336 | ||
| 337 | (defun gnus-topic-hierarchical-parameters (topic) | |
| 338 | "Return a topic list computed for TOPIC." | |
| 339 | (let ((topics (gnus-current-topics topic)) | |
| 340 | params-list param out params) | |
| 341 | (while topics | |
| 342 | (push (gnus-topic-parameters (pop topics)) params-list)) | |
| 343 | ;; We probably have lots of nil elements here, so | |
| 344 | ;; we remove them. Probably faster than doing this "properly". | |
| 345 | (setq params-list (delq nil params-list)) | |
| 346 | ;; Now we have all the parameters, so we go through them | |
| 347 | ;; and do inheritance in the obvious way. | |
| 348 | (while (setq params (pop params-list)) | |
| 349 | (while (setq param (pop params)) | |
| 350 | (when (atom param) | |
| 351 | (setq param (cons param t))) | |
| 352 | ;; Override any old versions of this param. | |
| 353 | (gnus-pull (car param) out) | |
| 354 | (push param out))) | |
| 355 | ;; Return the resulting parameter list. | |
| 356 | out)) | |
| eec82323 LMI |
357 | |
| 358 | ;;; General utility functions | |
| 359 | ||
| 360 | (defun gnus-topic-enter-dribble () | |
| 361 | (gnus-dribble-enter | |
| 362 | (format "(setq gnus-topic-topology '%S)" gnus-topic-topology))) | |
| 363 | ||
| 364 | ;;; Generating group buffers | |
| 365 | ||
| 366 | (defun gnus-group-prepare-topics (level &optional all lowest regexp list-topic topic-level) | |
| 6748645f LMI |
367 | "List all newsgroups with unread articles of level LEVEL or lower. |
| 368 | Use the `gnus-group-topics' to sort the groups. | |
| eec82323 LMI |
369 | If ALL is non-nil, list groups that have no unread articles. |
| 370 | If LOWEST is non-nil, list all newsgroups of level LOWEST or higher." | |
| 371 | (set-buffer gnus-group-buffer) | |
| 372 | (let ((buffer-read-only nil) | |
| 373 | (lowest (or lowest 1))) | |
| 374 | ||
| eec82323 LMI |
375 | (when (or (not gnus-topic-alist) |
| 376 | (not gnus-topology-checked-p)) | |
| 377 | (gnus-topic-check-topology)) | |
| 378 | ||
| 379 | (unless list-topic | |
| 380 | (erase-buffer)) | |
| 381 | ||
| 382 | ;; List dead groups? | |
| 6748645f LMI |
383 | (when (and (>= level gnus-level-zombie) |
| 384 | (<= lowest gnus-level-zombie)) | |
| eec82323 LMI |
385 | (gnus-group-prepare-flat-list-dead |
| 386 | (setq gnus-zombie-list (sort gnus-zombie-list 'string<)) | |
| 387 | gnus-level-zombie ?Z | |
| 388 | regexp)) | |
| 389 | ||
| 390 | (when (and (>= level gnus-level-killed) (<= lowest gnus-level-killed)) | |
| 391 | (gnus-group-prepare-flat-list-dead | |
| 392 | (setq gnus-killed-list (sort gnus-killed-list 'string<)) | |
| 393 | gnus-level-killed ?K | |
| 394 | regexp)) | |
| 395 | ||
| 396 | ;; Use topics. | |
| 397 | (prog1 | |
| 398 | (when (< lowest gnus-level-zombie) | |
| 399 | (if list-topic | |
| 400 | (let ((top (gnus-topic-find-topology list-topic))) | |
| 401 | (gnus-topic-prepare-topic (cdr top) (car top) | |
| 6748645f LMI |
402 | (or topic-level level) all |
| 403 | nil lowest)) | |
| eec82323 | 404 | (gnus-topic-prepare-topic gnus-topic-topology 0 |
| 6748645f LMI |
405 | (or topic-level level) all |
| 406 | nil lowest))) | |
| eec82323 LMI |
407 | |
| 408 | (gnus-group-set-mode-line) | |
| 409 | (setq gnus-group-list-mode (cons level all)) | |
| 6748645f | 410 | (gnus-run-hooks 'gnus-group-prepare-hook)))) |
| eec82323 | 411 | |
| 6748645f LMI |
412 | (defun gnus-topic-prepare-topic (topicl level &optional list-level all silent |
| 413 | lowest) | |
| eec82323 LMI |
414 | "Insert TOPIC into the group buffer. |
| 415 | If SILENT, don't insert anything. Return the number of unread | |
| 416 | articles in the topic and its subtopics." | |
| 417 | (let* ((type (pop topicl)) | |
| 6748645f LMI |
418 | (entries (gnus-topic-find-groups |
| 419 | (car type) list-level | |
| 420 | (or all | |
| 421 | (cdr (assq 'visible | |
| 422 | (gnus-topic-hierarchical-parameters | |
| 423 | (car type))))) | |
| 424 | lowest)) | |
| eec82323 LMI |
425 | (visiblep (and (eq (nth 1 type) 'visible) (not silent))) |
| 426 | (gnus-group-indentation | |
| 427 | (make-string (* gnus-topic-indent-level level) ? )) | |
| 428 | (beg (progn (beginning-of-line) (point))) | |
| 429 | (topicl (reverse topicl)) | |
| 430 | (all-entries entries) | |
| 431 | (point-max (point-max)) | |
| 432 | (unread 0) | |
| 433 | (topic (car type)) | |
| 434 | info entry end active tick) | |
| 435 | ;; Insert any sub-topics. | |
| 436 | (while topicl | |
| 437 | (incf unread | |
| 438 | (gnus-topic-prepare-topic | |
| 439 | (pop topicl) (1+ level) list-level all | |
| 6748645f | 440 | (not visiblep) lowest))) |
| eec82323 LMI |
441 | (setq end (point)) |
| 442 | (goto-char beg) | |
| 443 | ;; Insert all the groups that belong in this topic. | |
| 444 | (while (setq entry (pop entries)) | |
| 445 | (when visiblep | |
| 446 | (if (stringp entry) | |
| 447 | ;; Dead groups. | |
| 448 | (gnus-group-insert-group-line | |
| 6748645f | 449 | entry (if (member entry gnus-zombie-list) gnus-level-zombie gnus-level-killed) |
| eec82323 LMI |
450 | nil (- (1+ (cdr (setq active (gnus-active entry)))) |
| 451 | (car active)) | |
| 452 | nil) | |
| 453 | ;; Living groups. | |
| 454 | (when (setq info (nth 2 entry)) | |
| 455 | (gnus-group-insert-group-line | |
| 456 | (gnus-info-group info) | |
| 457 | (gnus-info-level info) (gnus-info-marks info) | |
| 458 | (car entry) (gnus-info-method info))))) | |
| 459 | (when (and (listp entry) | |
| a8151ef7 | 460 | (numberp (car entry))) |
| eec82323 LMI |
461 | (incf unread (car entry))) |
| 462 | (when (listp entry) | |
| 463 | (setq tick t))) | |
| 464 | (goto-char beg) | |
| 465 | ;; Insert the topic line. | |
| 466 | (when (and (not silent) | |
| 467 | (or gnus-topic-display-empty-topics ;We want empty topics | |
| 468 | (not (zerop unread)) ;Non-empty | |
| 469 | tick ;Ticked articles | |
| 470 | (/= point-max (point-max)))) ;Unactivated groups | |
| 471 | (gnus-extent-start-open (point)) | |
| 472 | (gnus-topic-insert-topic-line | |
| 473 | (car type) visiblep | |
| 474 | (not (eq (nth 2 type) 'hidden)) | |
| 475 | level all-entries unread)) | |
| 6748645f | 476 | (gnus-topic-update-unreads (car type) unread) |
| eec82323 LMI |
477 | (goto-char end) |
| 478 | unread)) | |
| 479 | ||
| 480 | (defun gnus-topic-remove-topic (&optional insert total-remove hide in-level) | |
| 481 | "Remove the current topic." | |
| 482 | (let ((topic (gnus-group-topic-name)) | |
| 483 | (level (gnus-group-topic-level)) | |
| 484 | (beg (progn (beginning-of-line) (point))) | |
| 485 | buffer-read-only) | |
| 486 | (when topic | |
| 487 | (while (and (zerop (forward-line 1)) | |
| 488 | (> (or (gnus-group-topic-level) (1+ level)) level))) | |
| 489 | (delete-region beg (point)) | |
| 490 | ;; Do the change in this rather odd manner because it has been | |
| 491 | ;; reported that some topics share parts of some lists, for some | |
| 492 | ;; reason. I have been unable to determine why this is the | |
| 493 | ;; case, but this hack seems to take care of things. | |
| 494 | (let ((data (cadr (gnus-topic-find-topology topic)))) | |
| 495 | (setcdr data | |
| 496 | (list (if insert 'visible 'invisible) | |
| 497 | (if hide 'hide nil) | |
| 498 | (cadddr data)))) | |
| 499 | (if total-remove | |
| 500 | (setq gnus-topic-alist | |
| 501 | (delq (assoc topic gnus-topic-alist) gnus-topic-alist)) | |
| 502 | (gnus-topic-insert-topic topic in-level))))) | |
| 503 | ||
| 504 | (defun gnus-topic-insert-topic (topic &optional level) | |
| 505 | "Insert TOPIC." | |
| 506 | (gnus-group-prepare-topics | |
| 507 | (car gnus-group-list-mode) (cdr gnus-group-list-mode) | |
| 508 | nil nil topic level)) | |
| 509 | ||
| 510 | (defun gnus-topic-fold (&optional insert) | |
| 511 | "Remove/insert the current topic." | |
| 512 | (let ((topic (gnus-group-topic-name))) | |
| 513 | (when topic | |
| 514 | (save-excursion | |
| 515 | (if (not (gnus-group-active-topic-p)) | |
| 516 | (gnus-topic-remove-topic | |
| 517 | (or insert (not (gnus-topic-visible-p)))) | |
| 518 | (let ((gnus-topic-topology gnus-topic-active-topology) | |
| 519 | (gnus-topic-alist gnus-topic-active-alist) | |
| 520 | (gnus-group-list-mode (cons 5 t))) | |
| 521 | (gnus-topic-remove-topic | |
| 522 | (or insert (not (gnus-topic-visible-p))) nil nil 9) | |
| 523 | (gnus-topic-enter-dribble))))))) | |
| 524 | ||
| 525 | (defun gnus-topic-insert-topic-line (name visiblep shownp level entries | |
| 526 | &optional unread) | |
| 527 | (let* ((visible (if visiblep "" "...")) | |
| 528 | (indentation (make-string (* gnus-topic-indent-level level) ? )) | |
| 529 | (total-number-of-articles unread) | |
| 530 | (number-of-groups (length entries)) | |
| 6748645f LMI |
531 | (active-topic (eq gnus-topic-alist gnus-topic-active-alist)) |
| 532 | gnus-tmp-header) | |
| 533 | (gnus-topic-update-unreads name unread) | |
| eec82323 LMI |
534 | (beginning-of-line) |
| 535 | ;; Insert the text. | |
| 536 | (gnus-add-text-properties | |
| 537 | (point) | |
| 538 | (prog1 (1+ (point)) | |
| a8151ef7 | 539 | (eval gnus-topic-line-format-spec)) |
| eec82323 LMI |
540 | (list 'gnus-topic (intern name) |
| 541 | 'gnus-topic-level level | |
| 542 | 'gnus-topic-unread unread | |
| 543 | 'gnus-active active-topic | |
| 544 | 'gnus-topic-visible visiblep)))) | |
| 545 | ||
| 6748645f LMI |
546 | (defun gnus-topic-update-unreads (topic unreads) |
| 547 | (setq gnus-topic-unreads (delq (assoc topic gnus-topic-unreads) | |
| 548 | gnus-topic-unreads)) | |
| 549 | (push (cons topic unreads) gnus-topic-unreads)) | |
| 550 | ||
| eec82323 LMI |
551 | (defun gnus-topic-update-topics-containing-group (group) |
| 552 | "Update all topics that have GROUP as a member." | |
| 553 | (when (and (eq major-mode 'gnus-group-mode) | |
| 554 | gnus-topic-mode) | |
| 555 | (save-excursion | |
| 556 | (let ((alist gnus-topic-alist)) | |
| 557 | ;; This is probably not entirely correct. If a topic | |
| 558 | ;; isn't shown, then it's not updated. But the updating | |
| 559 | ;; should be performed in any case, since the topic's | |
| 560 | ;; parent should be updated. Pfft. | |
| 561 | (while alist | |
| 562 | (when (and (member group (cdar alist)) | |
| 563 | (gnus-topic-goto-topic (caar alist))) | |
| 564 | (gnus-topic-update-topic-line (caar alist))) | |
| 565 | (pop alist)))))) | |
| 566 | ||
| 567 | (defun gnus-topic-update-topic () | |
| 568 | "Update all parent topics to the current group." | |
| 569 | (when (and (eq major-mode 'gnus-group-mode) | |
| 570 | gnus-topic-mode) | |
| 571 | (let ((group (gnus-group-group-name)) | |
| a8151ef7 | 572 | (m (point-marker)) |
| eec82323 LMI |
573 | (buffer-read-only nil)) |
| 574 | (when (and group | |
| 575 | (gnus-get-info group) | |
| 576 | (gnus-topic-goto-topic (gnus-current-topic))) | |
| 577 | (gnus-topic-update-topic-line (gnus-group-topic-name)) | |
| a8151ef7 LMI |
578 | (goto-char m) |
| 579 | (set-marker m nil) | |
| eec82323 LMI |
580 | (gnus-group-position-point))))) |
| 581 | ||
| 582 | (defun gnus-topic-goto-missing-group (group) | |
| 583 | "Place point where GROUP is supposed to be inserted." | |
| 584 | (let* ((topic (gnus-group-topic group)) | |
| 585 | (groups (cdr (assoc topic gnus-topic-alist))) | |
| 586 | (g (cdr (member group groups))) | |
| 587 | (unfound t)) | |
| 588 | ;; Try to jump to a visible group. | |
| 589 | (while (and g (not (gnus-group-goto-group (car g) t))) | |
| 590 | (pop g)) | |
| 591 | ;; It wasn't visible, so we try to see where to insert it. | |
| 592 | (when (not g) | |
| 593 | (setq g (cdr (member group (reverse groups)))) | |
| 594 | (while (and g unfound) | |
| 595 | (when (gnus-group-goto-group (pop g) t) | |
| 596 | (forward-line 1) | |
| 597 | (setq unfound nil))) | |
| 598 | (when (and unfound | |
| 599 | topic | |
| 600 | (not (gnus-topic-goto-missing-topic topic))) | |
| 601 | (gnus-topic-insert-topic-line | |
| 602 | topic t t (car (gnus-topic-find-topology topic)) nil 0))))) | |
| 603 | ||
| 604 | (defun gnus-topic-goto-missing-topic (topic) | |
| 605 | (if (gnus-topic-goto-topic topic) | |
| 606 | (forward-line 1) | |
| 607 | ;; Topic not displayed. | |
| 608 | (let* ((top (gnus-topic-find-topology | |
| 609 | (gnus-topic-parent-topic topic))) | |
| 610 | (tp (reverse (cddr top)))) | |
| 611 | (while (not (equal (caaar tp) topic)) | |
| 612 | (setq tp (cdr tp))) | |
| 613 | (pop tp) | |
| 614 | (while (and tp | |
| 615 | (not (gnus-topic-goto-topic (caaar tp)))) | |
| 616 | (pop tp)) | |
| 617 | (if tp | |
| 618 | (gnus-topic-forward-topic 1) | |
| 619 | (gnus-topic-goto-missing-topic (caadr top)))) | |
| 620 | nil)) | |
| 621 | ||
| 622 | (defun gnus-topic-update-topic-line (topic-name &optional reads) | |
| 623 | (let* ((top (gnus-topic-find-topology topic-name)) | |
| 624 | (type (cadr top)) | |
| 625 | (children (cddr top)) | |
| 626 | (entries (gnus-topic-find-groups | |
| 627 | (car type) (car gnus-group-list-mode) | |
| 628 | (cdr gnus-group-list-mode))) | |
| 629 | (parent (gnus-topic-parent-topic topic-name)) | |
| 630 | (all-entries entries) | |
| 631 | (unread 0) | |
| 6748645f | 632 | old-unread entry new-unread) |
| eec82323 LMI |
633 | (when (gnus-topic-goto-topic (car type)) |
| 634 | ;; Tally all the groups that belong in this topic. | |
| 635 | (if reads | |
| 636 | (setq unread (- (gnus-group-topic-unread) reads)) | |
| 637 | (while children | |
| 638 | (incf unread (gnus-topic-unread (caar (pop children))))) | |
| 639 | (while (setq entry (pop entries)) | |
| 640 | (when (numberp (car entry)) | |
| 641 | (incf unread (car entry))))) | |
| 642 | (setq old-unread (gnus-group-topic-unread)) | |
| 643 | ;; Insert the topic line. | |
| 644 | (gnus-topic-insert-topic-line | |
| 645 | (car type) (gnus-topic-visible-p) | |
| 646 | (not (eq (nth 2 type) 'hidden)) | |
| 647 | (gnus-group-topic-level) all-entries unread) | |
| 6748645f LMI |
648 | (gnus-delete-line) |
| 649 | (forward-line -1) | |
| 650 | (setq new-unread (gnus-group-topic-unread))) | |
| eec82323 LMI |
651 | (when parent |
| 652 | (forward-line -1) | |
| 653 | (gnus-topic-update-topic-line | |
| 6748645f LMI |
654 | parent |
| 655 | (- (or old-unread 0) (or new-unread 0)))) | |
| eec82323 LMI |
656 | unread)) |
| 657 | ||
| 658 | (defun gnus-topic-group-indentation () | |
| 659 | (make-string | |
| 660 | (* gnus-topic-indent-level | |
| 661 | (or (save-excursion | |
| 662 | (forward-line -1) | |
| 663 | (gnus-topic-goto-topic (gnus-current-topic)) | |
| 664 | (gnus-group-topic-level)) | |
| 665 | 0)) | |
| 666 | ? )) | |
| 667 | ||
| 668 | ;;; Initialization | |
| 669 | ||
| 670 | (gnus-add-shutdown 'gnus-topic-close 'gnus) | |
| 671 | ||
| 672 | (defun gnus-topic-close () | |
| 673 | (setq gnus-topic-active-topology nil | |
| 674 | gnus-topic-active-alist nil | |
| 675 | gnus-topic-killed-topics nil | |
| eec82323 LMI |
676 | gnus-topology-checked-p nil)) |
| 677 | ||
| 678 | (defun gnus-topic-check-topology () | |
| 679 | ;; The first time we set the topology to whatever we have | |
| 680 | ;; gotten here, which can be rather random. | |
| 681 | (unless gnus-topic-alist | |
| 682 | (gnus-topic-init-alist)) | |
| 683 | ||
| 684 | (setq gnus-topology-checked-p t) | |
| 685 | ;; Go through the topic alist and make sure that all topics | |
| 686 | ;; are in the topic topology. | |
| 687 | (let ((topics (gnus-topic-list)) | |
| 688 | (alist gnus-topic-alist) | |
| 689 | changed) | |
| 690 | (while alist | |
| 691 | (unless (member (caar alist) topics) | |
| 692 | (nconc gnus-topic-topology | |
| 693 | (list (list (list (caar alist) 'visible)))) | |
| 694 | (setq changed t)) | |
| 695 | (setq alist (cdr alist))) | |
| 696 | (when changed | |
| 697 | (gnus-topic-enter-dribble)) | |
| 698 | ;; Conversely, go through the topology and make sure that all | |
| 699 | ;; topologies have alists. | |
| 700 | (while topics | |
| 701 | (unless (assoc (car topics) gnus-topic-alist) | |
| 702 | (push (list (car topics)) gnus-topic-alist)) | |
| 703 | (pop topics))) | |
| 704 | ;; Go through all living groups and make sure that | |
| 705 | ;; they belong to some topic. | |
| 706 | (let* ((tgroups (apply 'append (mapcar (lambda (entry) (cdr entry)) | |
| 707 | gnus-topic-alist))) | |
| a8151ef7 | 708 | (entry (last (assoc (caar gnus-topic-topology) gnus-topic-alist))) |
| eec82323 LMI |
709 | (newsrc (cdr gnus-newsrc-alist)) |
| 710 | group) | |
| 711 | (while newsrc | |
| 712 | (unless (member (setq group (gnus-info-group (pop newsrc))) tgroups) | |
| a8151ef7 LMI |
713 | (setcdr entry (list group)) |
| 714 | (setq entry (cdr entry))))) | |
| eec82323 LMI |
715 | ;; Go through all topics and make sure they contain only living groups. |
| 716 | (let ((alist gnus-topic-alist) | |
| 717 | topic) | |
| 718 | (while (setq topic (pop alist)) | |
| 719 | (while (cdr topic) | |
| a8151ef7 LMI |
720 | (if (and (cadr topic) |
| 721 | (gnus-gethash (cadr topic) gnus-newsrc-hashtb)) | |
| eec82323 LMI |
722 | (setq topic (cdr topic)) |
| 723 | (setcdr topic (cddr topic))))))) | |
| 724 | ||
| 725 | (defun gnus-topic-init-alist () | |
| 726 | "Initialize the topic structures." | |
| 727 | (setq gnus-topic-topology | |
| 728 | (cons (list "Gnus" 'visible) | |
| 729 | (mapcar (lambda (topic) | |
| 730 | (list (list (car topic) 'visible))) | |
| 731 | '(("misc"))))) | |
| 732 | (setq gnus-topic-alist | |
| 733 | (list (cons "misc" | |
| 734 | (mapcar (lambda (info) (gnus-info-group info)) | |
| 735 | (cdr gnus-newsrc-alist))) | |
| 736 | (list "Gnus"))) | |
| 737 | (gnus-topic-enter-dribble)) | |
| 738 | ||
| 739 | ;;; Maintenance | |
| 740 | ||
| 741 | (defun gnus-topic-clean-alist () | |
| 742 | "Remove bogus groups from the topic alist." | |
| 743 | (let ((topic-alist gnus-topic-alist) | |
| 744 | result topic) | |
| 745 | (unless gnus-killed-hashtb | |
| 746 | (gnus-make-hashtable-from-killed)) | |
| 747 | (while (setq topic (pop topic-alist)) | |
| 748 | (let ((topic-name (pop topic)) | |
| 749 | group filtered-topic) | |
| 750 | (while (setq group (pop topic)) | |
| 751 | (when (and (or (gnus-gethash group gnus-active-hashtb) | |
| 752 | (gnus-info-method (gnus-get-info group))) | |
| 753 | (not (gnus-gethash group gnus-killed-hashtb))) | |
| 754 | (push group filtered-topic))) | |
| 755 | (push (cons topic-name (nreverse filtered-topic)) result))) | |
| 756 | (setq gnus-topic-alist (nreverse result)))) | |
| 757 | ||
| a8151ef7 | 758 | (defun gnus-topic-change-level (group level oldlevel &optional previous) |
| eec82323 LMI |
759 | "Run when changing levels to enter/remove groups from topics." |
| 760 | (save-excursion | |
| 761 | (set-buffer gnus-group-buffer) | |
| 6748645f LMI |
762 | (let ((buffer-read-only nil)) |
| 763 | (unless gnus-topic-inhibit-change-level | |
| 764 | (gnus-group-goto-group (or (car (nth 2 previous)) group)) | |
| 765 | (when (and gnus-topic-mode | |
| 766 | gnus-topic-alist | |
| 767 | (not gnus-topic-inhibit-change-level)) | |
| 768 | ;; Remove the group from the topics. | |
| 769 | (if (and (< oldlevel gnus-level-zombie) | |
| 770 | (>= level gnus-level-zombie)) | |
| 771 | (let ((alist gnus-topic-alist)) | |
| 772 | (while (gnus-group-goto-group group) | |
| 773 | (gnus-delete-line)) | |
| 774 | (while alist | |
| 775 | (when (member group (car alist)) | |
| 776 | (setcdr (car alist) (delete group (cdar alist)))) | |
| 777 | (pop alist))) | |
| 778 | ;; If the group is subscribed we enter it into the topics. | |
| 779 | (when (and (< level gnus-level-zombie) | |
| 780 | (>= oldlevel gnus-level-zombie)) | |
| 781 | (let* ((prev (gnus-group-group-name)) | |
| 782 | (gnus-topic-inhibit-change-level t) | |
| 783 | (gnus-group-indentation | |
| 784 | (make-string | |
| 785 | (* gnus-topic-indent-level | |
| 786 | (or (save-excursion | |
| 787 | (gnus-topic-goto-topic (gnus-current-topic)) | |
| 788 | (gnus-group-topic-level)) | |
| 789 | 0)) | |
| 790 | ? )) | |
| 791 | (yanked (list group)) | |
| 792 | alist talist end) | |
| 793 | ;; Then we enter the yanked groups into the topics they belong | |
| 794 | ;; to. | |
| 795 | (when (setq alist (assoc (save-excursion | |
| 796 | (forward-line -1) | |
| 797 | (or | |
| 798 | (gnus-current-topic) | |
| 799 | (caar gnus-topic-topology))) | |
| 800 | gnus-topic-alist)) | |
| 801 | (setq talist alist) | |
| 802 | (when (stringp yanked) | |
| 803 | (setq yanked (list yanked))) | |
| 804 | (if (not prev) | |
| 805 | (nconc alist yanked) | |
| 806 | (if (not (cdr alist)) | |
| 807 | (setcdr alist (nconc yanked (cdr alist))) | |
| 808 | (while (and (not end) (cdr alist)) | |
| 809 | (when (equal (cadr alist) prev) | |
| 810 | (setcdr alist (nconc yanked (cdr alist))) | |
| 811 | (setq end t)) | |
| 812 | (setq alist (cdr alist))) | |
| 813 | (unless end | |
| 814 | (nconc talist yanked)))))) | |
| 815 | (gnus-topic-update-topic)))))))) | |
| eec82323 LMI |
816 | |
| 817 | (defun gnus-topic-goto-next-group (group props) | |
| 818 | "Go to group or the next group after group." | |
| 819 | (if (not group) | |
| 820 | (if (not (memq 'gnus-topic props)) | |
| 821 | (goto-char (point-max)) | |
| 822 | (gnus-topic-goto-topic (symbol-name (cadr (memq 'gnus-topic props))))) | |
| 823 | (if (gnus-group-goto-group group) | |
| 824 | t | |
| 825 | ;; The group is no longer visible. | |
| 826 | (let* ((list (assoc (gnus-group-topic group) gnus-topic-alist)) | |
| 827 | (after (cdr (member group (cdr list))))) | |
| 828 | ;; First try to put point on a group after the current one. | |
| 829 | (while (and after | |
| 830 | (not (gnus-group-goto-group (car after)))) | |
| 831 | (setq after (cdr after))) | |
| 832 | ;; Then try to put point on a group before point. | |
| 833 | (unless after | |
| 834 | (setq after (cdr (member group (reverse (cdr list))))) | |
| 835 | (while (and after | |
| 836 | (not (gnus-group-goto-group (car after)))) | |
| 837 | (setq after (cdr after)))) | |
| 838 | ;; Finally, just put point on the topic. | |
| 839 | (if (not (car list)) | |
| 840 | (goto-char (point-min)) | |
| 841 | (unless after | |
| 842 | (gnus-topic-goto-topic (car list)) | |
| 843 | (setq after nil))) | |
| 844 | t)))) | |
| 845 | ||
| 846 | ;;; Topic-active functions | |
| 847 | ||
| 848 | (defun gnus-topic-grok-active (&optional force) | |
| 849 | "Parse all active groups and create topic structures for them." | |
| 850 | ;; First we make sure that we have really read the active file. | |
| 851 | (when (or force | |
| 852 | (not gnus-topic-active-alist)) | |
| 853 | (let (groups) | |
| 854 | ;; Get a list of all groups available. | |
| 855 | (mapatoms (lambda (g) (when (symbol-value g) | |
| 856 | (push (symbol-name g) groups))) | |
| 857 | gnus-active-hashtb) | |
| 858 | (setq groups (sort groups 'string<)) | |
| 859 | ;; Init the variables. | |
| 860 | (setq gnus-topic-active-topology (list (list "" 'visible))) | |
| 861 | (setq gnus-topic-active-alist nil) | |
| 862 | ;; Descend the top-level hierarchy. | |
| 863 | (gnus-topic-grok-active-1 gnus-topic-active-topology groups) | |
| 864 | ;; Set the top-level topic names to something nice. | |
| 865 | (setcar (car gnus-topic-active-topology) "Gnus active") | |
| 866 | (setcar (car gnus-topic-active-alist) "Gnus active")))) | |
| 867 | ||
| 868 | (defun gnus-topic-grok-active-1 (topology groups) | |
| 869 | (let* ((name (caar topology)) | |
| 870 | (prefix (concat "^" (regexp-quote name))) | |
| 871 | tgroups ntopology group) | |
| 872 | (while (and groups | |
| 873 | (string-match prefix (setq group (car groups)))) | |
| 874 | (if (not (string-match "\\." group (match-end 0))) | |
| 875 | ;; There are no further hierarchies here, so we just | |
| 876 | ;; enter this group into the list belonging to this | |
| 877 | ;; topic. | |
| 878 | (push (pop groups) tgroups) | |
| 879 | ;; New sub-hierarchy, so we add it to the topology. | |
| 880 | (nconc topology (list (setq ntopology | |
| 881 | (list (list (substring | |
| 882 | group 0 (match-end 0)) | |
| 883 | 'invisible))))) | |
| 884 | ;; Descend the hierarchy. | |
| 885 | (setq groups (gnus-topic-grok-active-1 ntopology groups)))) | |
| 886 | ;; We remove the trailing "." from the topic name. | |
| 887 | (setq name | |
| 888 | (if (string-match "\\.$" name) | |
| 889 | (substring name 0 (match-beginning 0)) | |
| 890 | name)) | |
| 891 | ;; Add this topic and its groups to the topic alist. | |
| 892 | (push (cons name (nreverse tgroups)) gnus-topic-active-alist) | |
| 893 | (setcar (car topology) name) | |
| 894 | ;; We return the rest of the groups that didn't belong | |
| 895 | ;; to this topic. | |
| 896 | groups)) | |
| 897 | ||
| 898 | ;;; Topic mode, commands and keymap. | |
| 899 | ||
| 900 | (defvar gnus-topic-mode-map nil) | |
| 901 | (defvar gnus-group-topic-map nil) | |
| 902 | ||
| 903 | (unless gnus-topic-mode-map | |
| 904 | (setq gnus-topic-mode-map (make-sparse-keymap)) | |
| 905 | ||
| 906 | ;; Override certain group mode keys. | |
| 907 | (gnus-define-keys gnus-topic-mode-map | |
| 908 | "=" gnus-topic-select-group | |
| 909 | "\r" gnus-topic-select-group | |
| 910 | " " gnus-topic-read-group | |
| 911 | "\C-k" gnus-topic-kill-group | |
| 912 | "\C-y" gnus-topic-yank-group | |
| 913 | "\M-g" gnus-topic-get-new-news-this-topic | |
| 914 | "AT" gnus-topic-list-active | |
| 915 | "Gp" gnus-topic-edit-parameters | |
| 916 | "#" gnus-topic-mark-topic | |
| 917 | "\M-#" gnus-topic-unmark-topic | |
| 6748645f LMI |
918 | [tab] gnus-topic-indent |
| 919 | [(meta tab)] gnus-topic-unindent | |
| 920 | "\C-i" gnus-topic-indent | |
| 921 | "\M-\C-i" gnus-topic-unindent | |
| eec82323 LMI |
922 | gnus-mouse-2 gnus-mouse-pick-topic) |
| 923 | ||
| 924 | ;; Define a new submap. | |
| 925 | (gnus-define-keys (gnus-group-topic-map "T" gnus-group-mode-map) | |
| 926 | "#" gnus-topic-mark-topic | |
| 927 | "\M-#" gnus-topic-unmark-topic | |
| 928 | "n" gnus-topic-create-topic | |
| 929 | "m" gnus-topic-move-group | |
| 930 | "D" gnus-topic-remove-group | |
| 931 | "c" gnus-topic-copy-group | |
| 932 | "h" gnus-topic-hide-topic | |
| 933 | "s" gnus-topic-show-topic | |
| 934 | "M" gnus-topic-move-matching | |
| 935 | "C" gnus-topic-copy-matching | |
| 936 | "\C-i" gnus-topic-indent | |
| 937 | [tab] gnus-topic-indent | |
| 938 | "r" gnus-topic-rename | |
| a8151ef7 LMI |
939 | "\177" gnus-topic-delete |
| 940 | [delete] gnus-topic-delete | |
| 6748645f | 941 | "H" gnus-topic-toggle-display-empty-topics) |
| eec82323 LMI |
942 | |
| 943 | (gnus-define-keys (gnus-topic-sort-map "S" gnus-group-topic-map) | |
| 944 | "s" gnus-topic-sort-groups | |
| 945 | "a" gnus-topic-sort-groups-by-alphabet | |
| 946 | "u" gnus-topic-sort-groups-by-unread | |
| 947 | "l" gnus-topic-sort-groups-by-level | |
| 948 | "v" gnus-topic-sort-groups-by-score | |
| 949 | "r" gnus-topic-sort-groups-by-rank | |
| 950 | "m" gnus-topic-sort-groups-by-method)) | |
| 951 | ||
| 952 | (defun gnus-topic-make-menu-bar () | |
| 953 | (unless (boundp 'gnus-topic-menu) | |
| 954 | (easy-menu-define | |
| 955 | gnus-topic-menu gnus-topic-mode-map "" | |
| 956 | '("Topics" | |
| 957 | ["Toggle topics" gnus-topic-mode t] | |
| 958 | ("Groups" | |
| 959 | ["Copy" gnus-topic-copy-group t] | |
| 960 | ["Move" gnus-topic-move-group t] | |
| 961 | ["Remove" gnus-topic-remove-group t] | |
| 962 | ["Copy matching" gnus-topic-copy-matching t] | |
| 963 | ["Move matching" gnus-topic-move-matching t]) | |
| 964 | ("Topics" | |
| 965 | ["Show" gnus-topic-show-topic t] | |
| 966 | ["Hide" gnus-topic-hide-topic t] | |
| 967 | ["Delete" gnus-topic-delete t] | |
| 968 | ["Rename" gnus-topic-rename t] | |
| 969 | ["Create" gnus-topic-create-topic t] | |
| 970 | ["Mark" gnus-topic-mark-topic t] | |
| a8151ef7 LMI |
971 | ["Indent" gnus-topic-indent t] |
| 972 | ["Toggle hide empty" gnus-topic-toggle-display-empty-topics t] | |
| 973 | ["Edit parameters" gnus-topic-edit-parameters t]) | |
| eec82323 LMI |
974 | ["List active" gnus-topic-list-active t])))) |
| 975 | ||
| 976 | (defun gnus-topic-mode (&optional arg redisplay) | |
| 977 | "Minor mode for topicsifying Gnus group buffers." | |
| 978 | (interactive (list current-prefix-arg t)) | |
| 979 | (when (eq major-mode 'gnus-group-mode) | |
| 980 | (make-local-variable 'gnus-topic-mode) | |
| 981 | (setq gnus-topic-mode | |
| 982 | (if (null arg) (not gnus-topic-mode) | |
| 983 | (> (prefix-numeric-value arg) 0))) | |
| 984 | ;; Infest Gnus with topics. | |
| 6748645f LMI |
985 | (if (not gnus-topic-mode) |
| 986 | (setq gnus-goto-missing-group-function nil) | |
| eec82323 LMI |
987 | (when (gnus-visual-p 'topic-menu 'menu) |
| 988 | (gnus-topic-make-menu-bar)) | |
| 6748645f | 989 | (gnus-set-format 'topic t) |
| a8151ef7 | 990 | (gnus-add-minor-mode 'gnus-topic-mode " Topic" gnus-topic-mode-map) |
| eec82323 LMI |
991 | (add-hook 'gnus-group-catchup-group-hook 'gnus-topic-update-topic) |
| 992 | (set (make-local-variable 'gnus-group-prepare-function) | |
| 993 | 'gnus-group-prepare-topics) | |
| 994 | (set (make-local-variable 'gnus-group-get-parameter-function) | |
| 995 | 'gnus-group-topic-parameters) | |
| 996 | (set (make-local-variable 'gnus-group-goto-next-group-function) | |
| 997 | 'gnus-topic-goto-next-group) | |
| 998 | (set (make-local-variable 'gnus-group-indentation-function) | |
| 999 | 'gnus-topic-group-indentation) | |
| 1000 | (set (make-local-variable 'gnus-group-update-group-function) | |
| 1001 | 'gnus-topic-update-topics-containing-group) | |
| 1002 | (set (make-local-variable 'gnus-group-sort-alist-function) | |
| 1003 | 'gnus-group-sort-topic) | |
| 1004 | (setq gnus-group-change-level-function 'gnus-topic-change-level) | |
| 1005 | (setq gnus-goto-missing-group-function 'gnus-topic-goto-missing-group) | |
| 1006 | (make-local-hook 'gnus-check-bogus-groups-hook) | |
| 1007 | (add-hook 'gnus-check-bogus-groups-hook 'gnus-topic-clean-alist) | |
| 1008 | (setq gnus-topology-checked-p nil) | |
| 1009 | ;; We check the topology. | |
| 1010 | (when gnus-newsrc-alist | |
| 1011 | (gnus-topic-check-topology)) | |
| 6748645f | 1012 | (gnus-run-hooks 'gnus-topic-mode-hook)) |
| eec82323 LMI |
1013 | ;; Remove topic infestation. |
| 1014 | (unless gnus-topic-mode | |
| 1015 | (remove-hook 'gnus-summary-exit-hook 'gnus-topic-update-topic) | |
| 1016 | (remove-hook 'gnus-group-change-level-function | |
| 1017 | 'gnus-topic-change-level) | |
| 1018 | (remove-hook 'gnus-check-bogus-groups-hook 'gnus-topic-clean-alist) | |
| 1019 | (setq gnus-group-prepare-function 'gnus-group-prepare-flat) | |
| 1020 | (setq gnus-group-sort-alist-function 'gnus-group-sort-flat)) | |
| 1021 | (when redisplay | |
| 1022 | (gnus-group-list-groups)))) | |
| 1023 | ||
| 1024 | (defun gnus-topic-select-group (&optional all) | |
| 1025 | "Select this newsgroup. | |
| 1026 | No article is selected automatically. | |
| 1027 | If ALL is non-nil, already read articles become readable. | |
| 1028 | If ALL is a number, fetch this number of articles. | |
| 1029 | ||
| 1030 | If performed over a topic line, toggle folding the topic." | |
| 1031 | (interactive "P") | |
| 1032 | (if (gnus-group-topic-p) | |
| 1033 | (let ((gnus-group-list-mode | |
| 1034 | (if all (cons (if (numberp all) all 7) t) gnus-group-list-mode))) | |
| 1035 | (gnus-topic-fold all)) | |
| 1036 | (gnus-group-select-group all))) | |
| 1037 | ||
| 1038 | (defun gnus-mouse-pick-topic (e) | |
| 1039 | "Select the group or topic under the mouse pointer." | |
| 1040 | (interactive "e") | |
| 1041 | (mouse-set-point e) | |
| 1042 | (gnus-topic-read-group nil)) | |
| 1043 | ||
| 1044 | (defun gnus-topic-read-group (&optional all no-article group) | |
| 1045 | "Read news in this newsgroup. | |
| 1046 | If the prefix argument ALL is non-nil, already read articles become | |
| 1047 | readable. IF ALL is a number, fetch this number of articles. If the | |
| 1048 | optional argument NO-ARTICLE is non-nil, no article will be | |
| 1049 | auto-selected upon group entry. If GROUP is non-nil, fetch that | |
| 1050 | group. | |
| 1051 | ||
| 1052 | If performed over a topic line, toggle folding the topic." | |
| 1053 | (interactive "P") | |
| 1054 | (if (gnus-group-topic-p) | |
| 1055 | (let ((gnus-group-list-mode | |
| 1056 | (if all (cons (if (numberp all) all 7) t) gnus-group-list-mode))) | |
| 1057 | (gnus-topic-fold all)) | |
| 1058 | (gnus-group-read-group all no-article group))) | |
| 1059 | ||
| 1060 | (defun gnus-topic-create-topic (topic parent &optional previous full-topic) | |
| a8151ef7 LMI |
1061 | "Create a new TOPIC under PARENT. |
| 1062 | When used interactively, PARENT will be the topic under point." | |
| eec82323 LMI |
1063 | (interactive |
| 1064 | (list | |
| 1065 | (read-string "New topic: ") | |
| 1066 | (gnus-current-topic))) | |
| 1067 | ;; Check whether this topic already exists. | |
| 1068 | (when (gnus-topic-find-topology topic) | |
| 1069 | (error "Topic already exists")) | |
| 1070 | (unless parent | |
| 1071 | (setq parent (caar gnus-topic-topology))) | |
| 1072 | (let ((top (cdr (gnus-topic-find-topology parent))) | |
| 1073 | (full-topic (or full-topic `((,topic visible))))) | |
| 1074 | (unless top | |
| 1075 | (error "No such parent topic: %s" parent)) | |
| 1076 | (if previous | |
| 1077 | (progn | |
| 1078 | (while (and (cdr top) | |
| 1079 | (not (equal (caaadr top) previous))) | |
| 1080 | (setq top (cdr top))) | |
| 1081 | (setcdr top (cons full-topic (cdr top)))) | |
| 1082 | (nconc top (list full-topic))) | |
| 1083 | (unless (assoc topic gnus-topic-alist) | |
| 1084 | (push (list topic) gnus-topic-alist))) | |
| 1085 | (gnus-topic-enter-dribble) | |
| 1086 | (gnus-group-list-groups) | |
| 1087 | (gnus-topic-goto-topic topic)) | |
| 1088 | ||
| 1089 | (defun gnus-topic-move-group (n topic &optional copyp) | |
| 1090 | "Move the next N groups to TOPIC. | |
| 1091 | If COPYP, copy the groups instead." | |
| 1092 | (interactive | |
| 1093 | (list current-prefix-arg | |
| 1094 | (completing-read "Move to topic: " gnus-topic-alist nil t))) | |
| 1095 | (let ((groups (gnus-group-process-prefix n)) | |
| 1096 | (topicl (assoc topic gnus-topic-alist)) | |
| 1097 | (start-group (progn (forward-line 1) (gnus-group-group-name))) | |
| 1098 | (start-topic (gnus-group-topic-name)) | |
| 1099 | entry) | |
| 1100 | (mapcar | |
| 1101 | (lambda (g) | |
| 1102 | (gnus-group-remove-mark g) | |
| 1103 | (when (and | |
| 1104 | (setq entry (assoc (gnus-current-topic) gnus-topic-alist)) | |
| 1105 | (not copyp)) | |
| 1106 | (setcdr entry (gnus-delete-first g (cdr entry)))) | |
| 1107 | (nconc topicl (list g))) | |
| 1108 | groups) | |
| 1109 | (gnus-topic-enter-dribble) | |
| 1110 | (if start-group | |
| 1111 | (gnus-group-goto-group start-group) | |
| 1112 | (gnus-topic-goto-topic start-topic)) | |
| 1113 | (gnus-group-list-groups))) | |
| 1114 | ||
| 1115 | (defun gnus-topic-remove-group (&optional arg) | |
| 1116 | "Remove the current group from the topic." | |
| 1117 | (interactive "P") | |
| 1118 | (gnus-group-iterate arg | |
| 1119 | (lambda (group) | |
| 1120 | (let ((topicl (assoc (gnus-current-topic) gnus-topic-alist)) | |
| 1121 | (buffer-read-only nil)) | |
| 1122 | (when (and topicl group) | |
| 1123 | (gnus-delete-line) | |
| 1124 | (gnus-delete-first group topicl)) | |
| 1125 | (gnus-topic-update-topic) | |
| 1126 | (gnus-group-position-point))))) | |
| 1127 | ||
| 1128 | (defun gnus-topic-copy-group (n topic) | |
| 1129 | "Copy the current group to a topic." | |
| 1130 | (interactive | |
| 1131 | (list current-prefix-arg | |
| 1132 | (completing-read "Copy to topic: " gnus-topic-alist nil t))) | |
| 1133 | (gnus-topic-move-group n topic t)) | |
| 1134 | ||
| 1135 | (defun gnus-topic-kill-group (&optional n discard) | |
| 1136 | "Kill the next N groups." | |
| 1137 | (interactive "P") | |
| 1138 | (if (gnus-group-topic-p) | |
| 1139 | (let ((topic (gnus-group-topic-name))) | |
| 1140 | (push (cons | |
| 1141 | (gnus-topic-find-topology topic) | |
| 1142 | (assoc topic gnus-topic-alist)) | |
| 1143 | gnus-topic-killed-topics) | |
| 1144 | (gnus-topic-remove-topic nil t) | |
| 1145 | (gnus-topic-find-topology topic nil nil gnus-topic-topology) | |
| 1146 | (gnus-topic-enter-dribble)) | |
| 1147 | (gnus-group-kill-group n discard) | |
| 1148 | (gnus-topic-update-topic))) | |
| 1149 | ||
| 1150 | (defun gnus-topic-yank-group (&optional arg) | |
| 1151 | "Yank the last topic." | |
| 1152 | (interactive "p") | |
| 1153 | (if gnus-topic-killed-topics | |
| 1154 | (let* ((previous | |
| 1155 | (or (gnus-group-topic-name) | |
| 1156 | (gnus-topic-next-topic (gnus-current-topic)))) | |
| 1157 | (data (pop gnus-topic-killed-topics)) | |
| 1158 | (alist (cdr data)) | |
| 1159 | (item (cdar data))) | |
| 1160 | (push alist gnus-topic-alist) | |
| 1161 | (gnus-topic-create-topic | |
| 1162 | (caar item) (gnus-topic-parent-topic previous) previous | |
| 1163 | item) | |
| 1164 | (gnus-topic-enter-dribble) | |
| 1165 | (gnus-topic-goto-topic (caar item))) | |
| 1166 | (let* ((prev (gnus-group-group-name)) | |
| 1167 | (gnus-topic-inhibit-change-level t) | |
| 1168 | (gnus-group-indentation | |
| 1169 | (make-string | |
| 1170 | (* gnus-topic-indent-level | |
| 1171 | (or (save-excursion | |
| 1172 | (gnus-topic-goto-topic (gnus-current-topic)) | |
| 1173 | (gnus-group-topic-level)) | |
| 1174 | 0)) | |
| 1175 | ? )) | |
| 1176 | yanked alist) | |
| 1177 | ;; We first yank the groups the normal way... | |
| 1178 | (setq yanked (gnus-group-yank-group arg)) | |
| 1179 | ;; Then we enter the yanked groups into the topics they belong | |
| 1180 | ;; to. | |
| 1181 | (setq alist (assoc (save-excursion | |
| 1182 | (forward-line -1) | |
| 1183 | (gnus-current-topic)) | |
| 1184 | gnus-topic-alist)) | |
| 1185 | (when (stringp yanked) | |
| 1186 | (setq yanked (list yanked))) | |
| 1187 | (if (not prev) | |
| 1188 | (nconc alist yanked) | |
| 1189 | (if (not (cdr alist)) | |
| 1190 | (setcdr alist (nconc yanked (cdr alist))) | |
| 1191 | (while (cdr alist) | |
| 1192 | (when (equal (cadr alist) prev) | |
| 1193 | (setcdr alist (nconc yanked (cdr alist))) | |
| 1194 | (setq alist nil)) | |
| 1195 | (setq alist (cdr alist)))))) | |
| 1196 | (gnus-topic-update-topic))) | |
| 1197 | ||
| 1198 | (defun gnus-topic-hide-topic () | |
| 1199 | "Hide the current topic." | |
| 1200 | (interactive) | |
| 1201 | (when (gnus-current-topic) | |
| 1202 | (gnus-topic-goto-topic (gnus-current-topic)) | |
| 1203 | (gnus-topic-remove-topic nil nil 'hidden))) | |
| 1204 | ||
| 1205 | (defun gnus-topic-show-topic () | |
| 1206 | "Show the hidden topic." | |
| 1207 | (interactive) | |
| 1208 | (when (gnus-group-topic-p) | |
| 1209 | (gnus-topic-remove-topic t nil 'shown))) | |
| 1210 | ||
| 1211 | (defun gnus-topic-mark-topic (topic &optional unmark) | |
| 1212 | "Mark all groups in the topic with the process mark." | |
| 1213 | (interactive (list (gnus-group-topic-name))) | |
| 1214 | (if (not topic) | |
| 1215 | (call-interactively 'gnus-group-mark-group) | |
| 1216 | (save-excursion | |
| 6748645f | 1217 | (let ((groups (gnus-topic-find-groups topic gnus-level-killed t))) |
| eec82323 LMI |
1218 | (while groups |
| 1219 | (funcall (if unmark 'gnus-group-remove-mark 'gnus-group-set-mark) | |
| 1220 | (gnus-info-group (nth 2 (pop groups))))))))) | |
| 1221 | ||
| 1222 | (defun gnus-topic-unmark-topic (topic &optional unmark) | |
| 1223 | "Remove the process mark from all groups in the topic." | |
| 1224 | (interactive (list (gnus-group-topic-name))) | |
| 1225 | (if (not topic) | |
| 1226 | (call-interactively 'gnus-group-unmark-group) | |
| 1227 | (gnus-topic-mark-topic topic t))) | |
| 1228 | ||
| 1229 | (defun gnus-topic-get-new-news-this-topic (&optional n) | |
| 1230 | "Check for new news in the current topic." | |
| 1231 | (interactive "P") | |
| 1232 | (if (not (gnus-group-topic-p)) | |
| 1233 | (gnus-group-get-new-news-this-group n) | |
| 1234 | (gnus-topic-mark-topic (gnus-group-topic-name)) | |
| 1235 | (gnus-group-get-new-news-this-group))) | |
| 1236 | ||
| 1237 | (defun gnus-topic-move-matching (regexp topic &optional copyp) | |
| 1238 | "Move all groups that match REGEXP to some topic." | |
| 1239 | (interactive | |
| 1240 | (let (topic) | |
| 1241 | (nreverse | |
| 1242 | (list | |
| 1243 | (setq topic (completing-read "Move to topic: " gnus-topic-alist nil t)) | |
| 1244 | (read-string (format "Move to %s (regexp): " topic)))))) | |
| 1245 | (gnus-group-mark-regexp regexp) | |
| 1246 | (gnus-topic-move-group nil topic copyp)) | |
| 1247 | ||
| 1248 | (defun gnus-topic-copy-matching (regexp topic &optional copyp) | |
| 1249 | "Copy all groups that match REGEXP to some topic." | |
| 1250 | (interactive | |
| 1251 | (let (topic) | |
| 1252 | (nreverse | |
| 1253 | (list | |
| 1254 | (setq topic (completing-read "Copy to topic: " gnus-topic-alist nil t)) | |
| 1255 | (read-string (format "Copy to %s (regexp): " topic)))))) | |
| 1256 | (gnus-topic-move-matching regexp topic t)) | |
| 1257 | ||
| 1258 | (defun gnus-topic-delete (topic) | |
| 1259 | "Delete a topic." | |
| 1260 | (interactive (list (gnus-group-topic-name))) | |
| 1261 | (unless topic | |
| 1262 | (error "No topic to be deleted")) | |
| 1263 | (let ((entry (assoc topic gnus-topic-alist)) | |
| 1264 | (buffer-read-only nil)) | |
| 1265 | (when (cdr entry) | |
| 1266 | (error "Topic not empty")) | |
| 1267 | ;; Delete if visible. | |
| 1268 | (when (gnus-topic-goto-topic topic) | |
| 1269 | (gnus-delete-line)) | |
| 1270 | ;; Remove from alist. | |
| 1271 | (setq gnus-topic-alist (delq entry gnus-topic-alist)) | |
| 1272 | ;; Remove from topology. | |
| a8151ef7 LMI |
1273 | (gnus-topic-find-topology topic nil nil 'delete) |
| 1274 | (gnus-dribble-touch))) | |
| eec82323 LMI |
1275 | |
| 1276 | (defun gnus-topic-rename (old-name new-name) | |
| 1277 | "Rename a topic." | |
| 1278 | (interactive | |
| 1279 | (let ((topic (gnus-current-topic))) | |
| 1280 | (list topic | |
| 1281 | (read-string (format "Rename %s to: " topic))))) | |
| 6748645f LMI |
1282 | ;; Check whether the new name exists. |
| 1283 | (when (gnus-topic-find-topology new-name) | |
| 1284 | (error "Topic '%s' already exists" new-name)) | |
| 1285 | ;; "nil" is an invalid name, for reasons I'd rather not go | |
| 1286 | ;; into here. Trust me. | |
| 1287 | (when (equal new-name "nil") | |
| 1288 | (error "Invalid name: %s" nil)) | |
| 1289 | ;; Do the renaming. | |
| eec82323 LMI |
1290 | (let ((top (gnus-topic-find-topology old-name)) |
| 1291 | (entry (assoc old-name gnus-topic-alist))) | |
| 1292 | (when top | |
| 1293 | (setcar (cadr top) new-name)) | |
| 1294 | (when entry | |
| 1295 | (setcar entry new-name)) | |
| 1296 | (forward-line -1) | |
| 1297 | (gnus-dribble-touch) | |
| 6748645f LMI |
1298 | (gnus-group-list-groups) |
| 1299 | (forward-line 1))) | |
| eec82323 LMI |
1300 | |
| 1301 | (defun gnus-topic-indent (&optional unindent) | |
| 1302 | "Indent a topic -- make it a sub-topic of the previous topic. | |
| 1303 | If UNINDENT, remove an indentation." | |
| 1304 | (interactive "P") | |
| 1305 | (if unindent | |
| 1306 | (gnus-topic-unindent) | |
| 1307 | (let* ((topic (gnus-current-topic)) | |
| 1308 | (parent (gnus-topic-previous-topic topic)) | |
| 1309 | (buffer-read-only nil)) | |
| 1310 | (unless parent | |
| 1311 | (error "Nothing to indent %s into" topic)) | |
| 1312 | (when topic | |
| 1313 | (gnus-topic-goto-topic topic) | |
| 1314 | (gnus-topic-kill-group) | |
| 1315 | (push (cdar gnus-topic-killed-topics) gnus-topic-alist) | |
| 1316 | (gnus-topic-create-topic | |
| 1317 | topic parent nil (cdaar gnus-topic-killed-topics)) | |
| 1318 | (pop gnus-topic-killed-topics) | |
| 1319 | (or (gnus-topic-goto-topic topic) | |
| 1320 | (gnus-topic-goto-topic parent)))))) | |
| 1321 | ||
| 1322 | (defun gnus-topic-unindent () | |
| 1323 | "Unindent a topic." | |
| 1324 | (interactive) | |
| 1325 | (let* ((topic (gnus-current-topic)) | |
| 1326 | (parent (gnus-topic-parent-topic topic)) | |
| 1327 | (grandparent (gnus-topic-parent-topic parent))) | |
| 1328 | (unless grandparent | |
| 1329 | (error "Nothing to indent %s into" topic)) | |
| 1330 | (when topic | |
| 1331 | (gnus-topic-goto-topic topic) | |
| 1332 | (gnus-topic-kill-group) | |
| 1333 | (push (cdar gnus-topic-killed-topics) gnus-topic-alist) | |
| 1334 | (gnus-topic-create-topic | |
| 1335 | topic grandparent (gnus-topic-next-topic parent) | |
| 1336 | (cdaar gnus-topic-killed-topics)) | |
| 1337 | (pop gnus-topic-killed-topics) | |
| 1338 | (gnus-topic-goto-topic topic)))) | |
| 1339 | ||
| 1340 | (defun gnus-topic-list-active (&optional force) | |
| 1341 | "List all groups that Gnus knows about in a topicsified fashion. | |
| 1342 | If FORCE, always re-read the active file." | |
| 1343 | (interactive "P") | |
| 1344 | (when force | |
| 1345 | (gnus-get-killed-groups)) | |
| 1346 | (gnus-topic-grok-active force) | |
| 1347 | (let ((gnus-topic-topology gnus-topic-active-topology) | |
| 1348 | (gnus-topic-alist gnus-topic-active-alist) | |
| 1349 | gnus-killed-list gnus-zombie-list) | |
| 6748645f | 1350 | (gnus-group-list-groups gnus-level-killed nil 1))) |
| eec82323 | 1351 | |
| a8151ef7 LMI |
1352 | (defun gnus-topic-toggle-display-empty-topics () |
| 1353 | "Show/hide topics that have no unread articles." | |
| 1354 | (interactive) | |
| 1355 | (setq gnus-topic-display-empty-topics | |
| 1356 | (not gnus-topic-display-empty-topics)) | |
| 1357 | (gnus-group-list-groups) | |
| 1358 | (message "%s empty topics" | |
| 1359 | (if gnus-topic-display-empty-topics | |
| 1360 | "Showing" "Hiding"))) | |
| 1361 | ||
| eec82323 LMI |
1362 | ;;; Topic sorting functions |
| 1363 | ||
| 1364 | (defun gnus-topic-edit-parameters (group) | |
| 1365 | "Edit the group parameters of GROUP. | |
| 1366 | If performed on a topic, edit the topic parameters instead." | |
| 1367 | (interactive (list (gnus-group-group-name))) | |
| 1368 | (if group | |
| 1369 | (gnus-group-edit-group-parameters group) | |
| 1370 | (if (not (gnus-group-topic-p)) | |
| a8151ef7 | 1371 | (error "Nothing to edit on the current line") |
| eec82323 LMI |
1372 | (let ((topic (gnus-group-topic-name))) |
| 1373 | (gnus-edit-form | |
| 1374 | (gnus-topic-parameters topic) | |
| 1375 | (format "Editing the topic parameters for `%s'." | |
| 1376 | (or group topic)) | |
| 1377 | `(lambda (form) | |
| 1378 | (gnus-topic-set-parameters ,topic form))))))) | |
| 1379 | ||
| 1380 | (defun gnus-group-sort-topic (func reverse) | |
| 1381 | "Sort groups in the topics according to FUNC and REVERSE." | |
| 1382 | (let ((alist gnus-topic-alist)) | |
| 1383 | (while alist | |
| 1384 | ;; !!!Sometimes nil elements sneak into the alist, | |
| 1385 | ;; for some reason or other. | |
| 1386 | (setcar alist (delq nil (car alist))) | |
| 1387 | (setcar alist (delete "dummy.group" (car alist))) | |
| 1388 | (gnus-topic-sort-topic (pop alist) func reverse)))) | |
| 1389 | ||
| 1390 | (defun gnus-topic-sort-topic (topic func reverse) | |
| 1391 | ;; Each topic only lists the name of the group, while | |
| 1392 | ;; the sort predicates expect group infos as inputs. | |
| 1393 | ;; So we first transform the group names into infos, | |
| 1394 | ;; then sort, and then transform back into group names. | |
| 1395 | (setcdr | |
| 1396 | topic | |
| 1397 | (mapcar | |
| 1398 | (lambda (info) (gnus-info-group info)) | |
| 1399 | (sort | |
| 1400 | (mapcar | |
| 1401 | (lambda (group) (gnus-get-info group)) | |
| 1402 | (cdr topic)) | |
| 1403 | func))) | |
| 1404 | ;; Do the reversal, if necessary. | |
| 1405 | (when reverse | |
| 1406 | (setcdr topic (nreverse (cdr topic))))) | |
| 1407 | ||
| 1408 | (defun gnus-topic-sort-groups (func &optional reverse) | |
| 1409 | "Sort the current topic according to FUNC. | |
| 1410 | If REVERSE, reverse the sorting order." | |
| 1411 | (interactive (list gnus-group-sort-function current-prefix-arg)) | |
| 1412 | (let ((topic (assoc (gnus-current-topic) gnus-topic-alist))) | |
| 1413 | (gnus-topic-sort-topic | |
| 1414 | topic (gnus-make-sort-function func) reverse) | |
| 1415 | (gnus-group-list-groups))) | |
| 1416 | ||
| 1417 | (defun gnus-topic-sort-groups-by-alphabet (&optional reverse) | |
| 1418 | "Sort the current topic alphabetically by group name. | |
| 1419 | If REVERSE, sort in reverse order." | |
| 1420 | (interactive "P") | |
| 1421 | (gnus-topic-sort-groups 'gnus-group-sort-by-alphabet reverse)) | |
| 1422 | ||
| 1423 | (defun gnus-topic-sort-groups-by-unread (&optional reverse) | |
| 1424 | "Sort the current topic by number of unread articles. | |
| 1425 | If REVERSE, sort in reverse order." | |
| 1426 | (interactive "P") | |
| 1427 | (gnus-topic-sort-groups 'gnus-group-sort-by-unread reverse)) | |
| 1428 | ||
| 1429 | (defun gnus-topic-sort-groups-by-level (&optional reverse) | |
| 1430 | "Sort the current topic by group level. | |
| 1431 | If REVERSE, sort in reverse order." | |
| 1432 | (interactive "P") | |
| 1433 | (gnus-topic-sort-groups 'gnus-group-sort-by-level reverse)) | |
| 1434 | ||
| 1435 | (defun gnus-topic-sort-groups-by-score (&optional reverse) | |
| 1436 | "Sort the current topic by group score. | |
| 1437 | If REVERSE, sort in reverse order." | |
| 1438 | (interactive "P") | |
| 1439 | (gnus-topic-sort-groups 'gnus-group-sort-by-score reverse)) | |
| 1440 | ||
| 1441 | (defun gnus-topic-sort-groups-by-rank (&optional reverse) | |
| 1442 | "Sort the current topic by group rank. | |
| 1443 | If REVERSE, sort in reverse order." | |
| 1444 | (interactive "P") | |
| 1445 | (gnus-topic-sort-groups 'gnus-group-sort-by-rank reverse)) | |
| 1446 | ||
| 1447 | (defun gnus-topic-sort-groups-by-method (&optional reverse) | |
| 1448 | "Sort the current topic alphabetically by backend name. | |
| 1449 | If REVERSE, sort in reverse order." | |
| 1450 | (interactive "P") | |
| 1451 | (gnus-topic-sort-groups 'gnus-group-sort-by-method reverse)) | |
| 1452 | ||
| 1453 | (provide 'gnus-topic) | |
| 1454 | ||
| 1455 | ;;; gnus-topic.el ends here |