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eec82323 | 1 | ;;; gnus-salt.el --- alternate summary mode interfaces for Gnus |
16409b0b | 2 | |
ab422c4d | 3 | ;; Copyright (C) 1996-1999, 2001-2013 Free Software Foundation, Inc. |
eec82323 | 4 | |
6748645f LMI |
5 | ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org> |
6 | ;; Keywords: news | |
eec82323 LMI |
7 | |
8 | ;; This file is part of GNU Emacs. | |
9 | ||
5e809f55 | 10 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
eec82323 | 11 | ;; it under the terms of the GNU General Public License as published by |
5e809f55 GM |
12 | ;; the Free Software Foundation, either version 3 of the License, or |
13 | ;; (at your option) any later version. | |
eec82323 LMI |
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 | |
5e809f55 | 21 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
eec82323 LMI |
22 | |
23 | ;;; Commentary: | |
24 | ||
25 | ;;; Code: | |
26 | ||
5ab7173c | 27 | (eval-when-compile (require 'cl)) |
d029b5d2 KY |
28 | (eval-when-compile |
29 | (when (featurep 'xemacs) | |
30 | (require 'easy-mmode))) ; for `define-minor-mode' | |
5ab7173c | 31 | |
eec82323 LMI |
32 | (require 'gnus) |
33 | (require 'gnus-sum) | |
23f87bed | 34 | (require 'gnus-win) |
eec82323 LMI |
35 | |
36 | ;;; | |
37 | ;;; gnus-pick-mode | |
38 | ;;; | |
39 | ||
a8151ef7 LMI |
40 | (defcustom gnus-pick-display-summary nil |
41 | "*Display summary while reading." | |
42 | :type 'boolean | |
43 | :group 'gnus-summary-pick) | |
44 | ||
45 | (defcustom gnus-pick-mode-hook nil | |
46 | "Hook run in summary pick mode buffers." | |
47 | :type 'hook | |
48 | :group 'gnus-summary-pick) | |
49 | ||
23f87bed MB |
50 | (when (featurep 'xemacs) |
51 | (add-hook 'gnus-pick-mode-hook 'gnus-xmas-pick-menu-add)) | |
52 | ||
a8151ef7 LMI |
53 | (defcustom gnus-mark-unpicked-articles-as-read nil |
54 | "*If non-nil, mark all unpicked articles as read." | |
55 | :type 'boolean | |
56 | :group 'gnus-summary-pick) | |
57 | ||
58 | (defcustom gnus-pick-elegant-flow t | |
23f87bed MB |
59 | "If non-nil, `gnus-pick-start-reading' runs |
60 | `gnus-summary-next-group' when no articles have been picked." | |
a8151ef7 LMI |
61 | :type 'boolean |
62 | :group 'gnus-summary-pick) | |
63 | ||
64 | (defcustom gnus-summary-pick-line-format | |
23f87bed | 65 | "%-5P %U\%R\%z\%I\%(%[%4L: %-23,23n%]%) %s\n" |
eec82323 | 66 | "*The format specification of the lines in pick buffers. |
a8151ef7 LMI |
67 | It accepts the same format specs that `gnus-summary-line-format' does." |
68 | :type 'string | |
69 | :group 'gnus-summary-pick) | |
eec82323 LMI |
70 | |
71 | ;;; Internal variables. | |
72 | ||
bbf52f1e SM |
73 | (defvar gnus-pick-mode-map |
74 | (let ((map (make-sparse-keymap))) | |
75 | (gnus-define-keys map | |
76 | " " gnus-pick-next-page | |
77 | "u" gnus-pick-unmark-article-or-thread | |
78 | "." gnus-pick-article-or-thread | |
79 | gnus-down-mouse-2 gnus-pick-mouse-pick-region | |
80 | "\r" gnus-pick-start-reading) | |
81 | map)) | |
eec82323 LMI |
82 | |
83 | (defun gnus-pick-make-menu-bar () | |
84 | (unless (boundp 'gnus-pick-menu) | |
85 | (easy-menu-define | |
23f87bed MB |
86 | gnus-pick-menu gnus-pick-mode-map "" |
87 | '("Pick" | |
88 | ("Pick" | |
89 | ["Article" gnus-summary-mark-as-processable t] | |
90 | ["Thread" gnus-uu-mark-thread t] | |
91 | ["Region" gnus-uu-mark-region t] | |
92 | ["Regexp" gnus-uu-mark-by-regexp t] | |
93 | ["Buffer" gnus-uu-mark-buffer t]) | |
94 | ("Unpick" | |
95 | ["Article" gnus-summary-unmark-as-processable t] | |
96 | ["Thread" gnus-uu-unmark-thread t] | |
97 | ["Region" gnus-uu-unmark-region t] | |
98 | ["Regexp" gnus-uu-unmark-by-regexp t] | |
99 | ["Buffer" gnus-summary-unmark-all-processable t]) | |
100 | ["Start reading" gnus-pick-start-reading t] | |
101 | ["Switch pick mode off" gnus-pick-mode gnus-pick-mode])))) | |
eec82323 | 102 | |
765d4319 KY |
103 | (eval-when-compile |
104 | (when (featurep 'xemacs) | |
105 | (defvar gnus-pick-mode-on-hook) | |
106 | (defvar gnus-pick-mode-off-hook))) | |
107 | ||
bbf52f1e | 108 | (define-minor-mode gnus-pick-mode |
eec82323 LMI |
109 | "Minor mode for providing a pick-and-read interface in Gnus summary buffers. |
110 | ||
111 | \\{gnus-pick-mode-map}" | |
bbf52f1e SM |
112 | :lighter " Pick" :keymap gnus-pick-mode-map |
113 | (cond | |
114 | ((not (derived-mode-p 'gnus-summary-mode)) (setq gnus-pick-mode nil)) | |
115 | ((not gnus-pick-mode) | |
116 | ;; FIXME: a buffer-local minor mode removing globally from a hook?? | |
117 | (remove-hook 'gnus-message-setup-hook 'gnus-pick-setup-message)) | |
118 | (t | |
119 | ;; Make sure that we don't select any articles upon group entry. | |
120 | (set (make-local-variable 'gnus-auto-select-first) nil) | |
121 | ;; Change line format. | |
122 | (setq gnus-summary-line-format gnus-summary-pick-line-format) | |
123 | (setq gnus-summary-line-format-spec nil) | |
124 | (gnus-update-format-specifications nil 'summary) | |
125 | (gnus-update-summary-mark-positions) | |
126 | ;; FIXME: a buffer-local minor mode adding globally to a hook?? | |
127 | (add-hook 'gnus-message-setup-hook 'gnus-pick-setup-message) | |
128 | (set (make-local-variable 'gnus-summary-goto-unread) 'never) | |
129 | ;; Set up the menu. | |
130 | (when (gnus-visual-p 'pick-menu 'menu) | |
131 | (gnus-pick-make-menu-bar))))) | |
eec82323 LMI |
132 | |
133 | (defun gnus-pick-setup-message () | |
134 | "Make Message do the right thing on exit." | |
135 | (when (and (gnus-buffer-live-p gnus-summary-buffer) | |
67d0660b | 136 | (with-current-buffer gnus-summary-buffer |
eec82323 LMI |
137 | gnus-pick-mode)) |
138 | (message-add-action | |
67d0660b | 139 | `(gnus-configure-windows ,gnus-current-window-configuration t) |
16409b0b | 140 | 'send 'exit 'postpone 'kill))) |
eec82323 LMI |
141 | |
142 | (defvar gnus-pick-line-number 1) | |
143 | (defun gnus-pick-line-number () | |
144 | "Return the current line number." | |
145 | (if (bobp) | |
146 | (setq gnus-pick-line-number 1) | |
147 | (incf gnus-pick-line-number))) | |
148 | ||
149 | (defun gnus-pick-start-reading (&optional catch-up) | |
150 | "Start reading the picked articles. | |
151 | If given a prefix, mark all unpicked articles as read." | |
152 | (interactive "P") | |
153 | (if gnus-newsgroup-processable | |
154 | (progn | |
23f87bed MB |
155 | (gnus-summary-limit-to-articles nil) |
156 | (when (or catch-up gnus-mark-unpicked-articles-as-read) | |
eec82323 | 157 | (gnus-summary-limit-mark-excluded-as-read)) |
23f87bed MB |
158 | (gnus-summary-first-article) |
159 | (gnus-configure-windows | |
eec82323 LMI |
160 | (if gnus-pick-display-summary 'article 'pick) t)) |
161 | (if gnus-pick-elegant-flow | |
162 | (progn | |
163 | (when (or catch-up gnus-mark-unpicked-articles-as-read) | |
a8151ef7 | 164 | (gnus-summary-catchup nil t)) |
eec82323 LMI |
165 | (if (gnus-group-quit-config gnus-newsgroup-name) |
166 | (gnus-summary-exit) | |
167 | (gnus-summary-next-group))) | |
168 | (error "No articles have been picked")))) | |
169 | ||
6748645f | 170 | (defun gnus-pick-goto-article (arg) |
16409b0b GM |
171 | "Go to the article number indicated by ARG. |
172 | If ARG is an invalid article number, then stay on current line." | |
6748645f LMI |
173 | (let (pos) |
174 | (save-excursion | |
175 | (goto-char (point-min)) | |
176 | (when (zerop (forward-line (1- (prefix-numeric-value arg)))) | |
177 | (setq pos (point)))) | |
178 | (if (not pos) | |
179 | (gnus-error 2 "No such line: %s" arg) | |
180 | (goto-char pos)))) | |
16409b0b | 181 | |
eec82323 | 182 | (defun gnus-pick-article (&optional arg) |
16409b0b | 183 | "Pick the article on the current line. |
eec82323 LMI |
184 | If ARG, pick the article on that line instead." |
185 | (interactive "P") | |
186 | (when arg | |
6748645f | 187 | (gnus-pick-goto-article arg)) |
eec82323 LMI |
188 | (gnus-summary-mark-as-processable 1)) |
189 | ||
6748645f | 190 | (defun gnus-pick-article-or-thread (&optional arg) |
16409b0b | 191 | "If `gnus-thread-hide-subtree' is t, then pick the thread on the current line. |
6748645f LMI |
192 | Otherwise pick the article on the current line. |
193 | If ARG, pick the article/thread on that line instead." | |
194 | (interactive "P") | |
195 | (when arg | |
196 | (gnus-pick-goto-article arg)) | |
197 | (if gnus-thread-hide-subtree | |
16409b0b GM |
198 | (progn |
199 | (save-excursion | |
200 | (gnus-uu-mark-thread)) | |
201 | (forward-line 1)) | |
6748645f | 202 | (gnus-summary-mark-as-processable 1))) |
16409b0b | 203 | |
6748645f | 204 | (defun gnus-pick-unmark-article-or-thread (&optional arg) |
16409b0b | 205 | "If `gnus-thread-hide-subtree' is t, then unmark the thread on current line. |
6748645f LMI |
206 | Otherwise unmark the article on current line. |
207 | If ARG, unmark thread/article on that line instead." | |
208 | (interactive "P") | |
209 | (when arg | |
210 | (gnus-pick-goto-article arg)) | |
211 | (if gnus-thread-hide-subtree | |
16409b0b GM |
212 | (save-excursion |
213 | (gnus-uu-unmark-thread)) | |
6748645f | 214 | (gnus-summary-unmark-as-processable 1))) |
16409b0b | 215 | |
eec82323 LMI |
216 | (defun gnus-pick-mouse-pick (e) |
217 | (interactive "e") | |
218 | (mouse-set-point e) | |
219 | (save-excursion | |
220 | (gnus-summary-mark-as-processable 1))) | |
221 | ||
222 | (defun gnus-pick-mouse-pick-region (start-event) | |
223 | "Pick articles that the mouse is dragged over. | |
224 | This must be bound to a button-down mouse event." | |
225 | (interactive "e") | |
226 | (mouse-minibuffer-check start-event) | |
227 | (let* ((echo-keystrokes 0) | |
228 | (start-posn (event-start start-event)) | |
229 | (start-point (posn-point start-posn)) | |
9b40100a | 230 | (start-line (1+ (count-lines (point-min) start-point))) |
eec82323 | 231 | (start-window (posn-window start-posn)) |
6748645f | 232 | (bounds (gnus-window-edges start-window)) |
eec82323 LMI |
233 | (top (nth 1 bounds)) |
234 | (bottom (if (window-minibuffer-p start-window) | |
235 | (nth 3 bounds) | |
236 | ;; Don't count the mode line. | |
237 | (1- (nth 3 bounds)))) | |
238 | (click-count (1- (event-click-count start-event)))) | |
239 | (setq mouse-selection-click-count click-count) | |
240 | (setq mouse-selection-click-count-buffer (current-buffer)) | |
241 | (mouse-set-point start-event) | |
23f87bed | 242 | ;; In case the down click is in the middle of some intangible text, |
eec82323 LMI |
243 | ;; use the end of that text, and put it in START-POINT. |
244 | (when (< (point) start-point) | |
245 | (goto-char start-point)) | |
246 | (gnus-pick-article) | |
247 | (setq start-point (point)) | |
248 | ;; end-of-range is used only in the single-click case. | |
249 | ;; It is the place where the drag has reached so far | |
250 | ;; (but not outside the window where the drag started). | |
6748645f | 251 | (let (event end end-point (end-of-range (point))) |
eec82323 | 252 | (track-mouse |
23f87bed MB |
253 | (while (progn |
254 | (setq event (cdr (gnus-read-event-char))) | |
255 | (or (mouse-movement-p event) | |
256 | (eq (car-safe event) 'switch-frame))) | |
257 | (if (eq (car-safe event) 'switch-frame) | |
258 | nil | |
259 | (setq end (event-end event) | |
260 | end-point (posn-point end)) | |
261 | ||
262 | (cond | |
263 | ;; Are we moving within the original window? | |
264 | ((and (eq (posn-window end) start-window) | |
265 | (integer-or-marker-p end-point)) | |
9b40100a | 266 | ;; Go to START-POINT first, so that when we move to END-POINT, |
23f87bed MB |
267 | ;; if it's in the middle of intangible text, |
268 | ;; point jumps in the direction away from START-POINT. | |
269 | (goto-char start-point) | |
270 | (goto-char end-point) | |
271 | (gnus-pick-article) | |
272 | ;; In case the user moved his mouse really fast, pick | |
9b40100a SM |
273 | ;; articles on the line between this one and the last one. |
274 | (let* ((this-line (1+ (count-lines (point-min) end-point))) | |
23f87bed MB |
275 | (min-line (min this-line start-line)) |
276 | (max-line (max this-line start-line))) | |
277 | (while (< min-line max-line) | |
7a4abdd6 GM |
278 | (goto-char (point-min)) |
279 | (forward-line (1- min-line)) | |
23f87bed MB |
280 | (gnus-pick-article) |
281 | (setq min-line (1+ min-line))) | |
282 | (setq start-line this-line)) | |
283 | (when (zerop (% click-count 3)) | |
284 | (setq end-of-range (point)))) | |
285 | (t | |
286 | (let ((mouse-row (cdr (cdr (mouse-position))))) | |
287 | (cond | |
288 | ((null mouse-row)) | |
289 | ((< mouse-row top) | |
290 | (mouse-scroll-subr start-window (- mouse-row top))) | |
291 | ((>= mouse-row bottom) | |
292 | (mouse-scroll-subr start-window | |
293 | (1+ (- mouse-row bottom))))))))))) | |
eec82323 LMI |
294 | (when (consp event) |
295 | (let ((fun (key-binding (vector (car event))))) | |
296 | ;; Run the binding of the terminating up-event, if possible. | |
23f87bed | 297 | ;; In the case of a multiple click, it gives the wrong results, |
eec82323 LMI |
298 | ;; because it would fail to set up a region. |
299 | (when nil | |
23f87bed MB |
300 | ;; (and (= (mod mouse-selection-click-count 3) 0) (fboundp fun)) |
301 | ;; In this case, we can just let the up-event execute normally. | |
eec82323 LMI |
302 | (let ((end (event-end event))) |
303 | ;; Set the position in the event before we replay it, | |
304 | ;; because otherwise it may have a position in the wrong | |
305 | ;; buffer. | |
306 | (setcar (cdr end) end-of-range) | |
307 | ;; Delete the overlay before calling the function, | |
23f87bed | 308 | ;; because delete-overlay increases buffer-modified-tick. |
eec82323 LMI |
309 | (push event unread-command-events)))))))) |
310 | ||
311 | (defun gnus-pick-next-page () | |
312 | "Go to the next page. If at the end of the buffer, start reading articles." | |
313 | (interactive) | |
314 | (let ((scroll-in-place nil)) | |
315 | (condition-case nil | |
316 | (scroll-up) | |
317 | (end-of-buffer (gnus-pick-start-reading))))) | |
318 | ||
319 | ;;; | |
320 | ;;; gnus-binary-mode | |
321 | ;;; | |
322 | ||
eec82323 LMI |
323 | (defvar gnus-binary-mode-hook nil |
324 | "Hook run in summary binary mode buffers.") | |
325 | ||
bbf52f1e SM |
326 | (defvar gnus-binary-mode-map |
327 | (let ((map (make-sparse-keymap))) | |
328 | (gnus-define-keys map | |
329 | "g" gnus-binary-show-article) | |
330 | map)) | |
eec82323 LMI |
331 | |
332 | (defun gnus-binary-make-menu-bar () | |
333 | (unless (boundp 'gnus-binary-menu) | |
334 | (easy-menu-define | |
23f87bed MB |
335 | gnus-binary-menu gnus-binary-mode-map "" |
336 | '("Pick" | |
337 | ["Switch binary mode off" gnus-binary-mode t])))) | |
eec82323 | 338 | |
765d4319 KY |
339 | (eval-when-compile |
340 | (when (featurep 'xemacs) | |
341 | (defvar gnus-binary-mode-on-hook) | |
342 | (defvar gnus-binary-mode-off-hook))) | |
343 | ||
bbf52f1e | 344 | (define-minor-mode gnus-binary-mode |
eec82323 | 345 | "Minor mode for providing a binary group interface in Gnus summary buffers." |
bbf52f1e SM |
346 | :lighter " Binary" :keymap gnus-binary-mode-map |
347 | (cond | |
348 | ((not (derived-mode-p 'gnus-summary-mode)) (setq gnus-binary-mode nil)) | |
349 | (gnus-binary-mode | |
350 | ;; Make sure that we don't select any articles upon group entry. | |
351 | (make-local-variable 'gnus-auto-select-first) | |
352 | (setq gnus-auto-select-first nil) | |
353 | (make-local-variable 'gnus-summary-display-article-function) | |
354 | (setq gnus-summary-display-article-function 'gnus-binary-display-article) | |
355 | ;; Set up the menu. | |
356 | (when (gnus-visual-p 'binary-menu 'menu) | |
357 | (gnus-binary-make-menu-bar))))) | |
eec82323 LMI |
358 | |
359 | (defun gnus-binary-display-article (article &optional all-header) | |
360 | "Run ARTICLE through the binary decode functions." | |
361 | (when (gnus-summary-goto-subject article) | |
23f87bed | 362 | (let ((gnus-view-pseudos (or gnus-view-pseudos 'automatic))) |
eec82323 LMI |
363 | (gnus-uu-decode-uu)))) |
364 | ||
365 | (defun gnus-binary-show-article (&optional arg) | |
366 | "Bypass the binary functions and show the article." | |
367 | (interactive "P") | |
368 | (let (gnus-summary-display-article-function) | |
369 | (gnus-summary-show-article arg))) | |
370 | ||
371 | ;;; | |
372 | ;;; gnus-tree-mode | |
373 | ;;; | |
374 | ||
a8151ef7 LMI |
375 | (defcustom gnus-tree-line-format "%(%[%3,3n%]%)" |
376 | "Format of tree elements." | |
377 | :type 'string | |
378 | :group 'gnus-summary-tree) | |
eec82323 | 379 | |
a8151ef7 | 380 | (defcustom gnus-tree-minimize-window t |
eec82323 LMI |
381 | "If non-nil, minimize the tree buffer window. |
382 | If a number, never let the tree buffer grow taller than that number of | |
a8151ef7 | 383 | lines." |
6748645f LMI |
384 | :type '(choice boolean |
385 | integer) | |
a8151ef7 | 386 | :group 'gnus-summary-tree) |
eec82323 | 387 | |
a8151ef7 LMI |
388 | (defcustom gnus-selected-tree-face 'modeline |
389 | "*Face used for highlighting selected articles in the thread tree." | |
390 | :type 'face | |
391 | :group 'gnus-summary-tree) | |
eec82323 LMI |
392 | |
393 | (defvar gnus-tree-brackets '((?\[ . ?\]) (?\( . ?\)) | |
394 | (?\{ . ?\}) (?< . ?>)) | |
395 | "Brackets used in tree nodes.") | |
396 | ||
397 | (defvar gnus-tree-parent-child-edges '(?- ?\\ ?|) | |
398 | "Characters used to connect parents with children.") | |
399 | ||
a8151ef7 LMI |
400 | (defcustom gnus-tree-mode-line-format "Gnus: %%b %S %Z" |
401 | "*The format specification for the tree mode line." | |
402 | :type 'string | |
403 | :group 'gnus-summary-tree) | |
eec82323 | 404 | |
a8151ef7 | 405 | (defcustom gnus-generate-tree-function 'gnus-generate-vertical-tree |
eec82323 LMI |
406 | "*Function for generating a thread tree. |
407 | Two predefined functions are available: | |
a8151ef7 LMI |
408 | `gnus-generate-horizontal-tree' and `gnus-generate-vertical-tree'." |
409 | :type '(radio (function-item gnus-generate-vertical-tree) | |
410 | (function-item gnus-generate-horizontal-tree) | |
411 | (function :tag "Other" nil)) | |
412 | :group 'gnus-summary-tree) | |
eec82323 | 413 | |
a8151ef7 LMI |
414 | (defcustom gnus-tree-mode-hook nil |
415 | "*Hook run in tree mode buffers." | |
416 | :type 'hook | |
417 | :group 'gnus-summary-tree) | |
eec82323 | 418 | |
23f87bed MB |
419 | (when (featurep 'xemacs) |
420 | (add-hook 'gnus-tree-mode-hook 'gnus-xmas-tree-menu-add) | |
421 | (add-hook 'gnus-tree-mode-hook 'gnus-xmas-switch-horizontal-scrollbar-off)) | |
422 | ||
423 | ||
eec82323 LMI |
424 | ;;; Internal variables. |
425 | ||
426 | (defvar gnus-tree-line-format-alist | |
427 | `((?n gnus-tmp-name ?s) | |
428 | (?f gnus-tmp-from ?s) | |
429 | (?N gnus-tmp-number ?d) | |
430 | (?\[ gnus-tmp-open-bracket ?c) | |
431 | (?\] gnus-tmp-close-bracket ?c) | |
432 | (?s gnus-tmp-subject ?s))) | |
433 | ||
434 | (defvar gnus-tree-mode-line-format-alist gnus-summary-mode-line-format-alist) | |
435 | ||
436 | (defvar gnus-tree-mode-line-format-spec nil) | |
437 | (defvar gnus-tree-line-format-spec nil) | |
438 | ||
439 | (defvar gnus-tree-node-length nil) | |
440 | (defvar gnus-selected-tree-overlay nil) | |
441 | ||
442 | (defvar gnus-tree-displayed-thread nil) | |
16409b0b | 443 | (defvar gnus-tree-inhibit nil) |
eec82323 LMI |
444 | |
445 | (defvar gnus-tree-mode-map nil) | |
446 | (put 'gnus-tree-mode 'mode-class 'special) | |
447 | ||
448 | (unless gnus-tree-mode-map | |
449 | (setq gnus-tree-mode-map (make-keymap)) | |
450 | (suppress-keymap gnus-tree-mode-map) | |
451 | (gnus-define-keys | |
16409b0b GM |
452 | gnus-tree-mode-map |
453 | "\r" gnus-tree-select-article | |
454 | gnus-mouse-2 gnus-tree-pick-article | |
455 | "\C-?" gnus-tree-read-summary-keys | |
456 | "h" gnus-tree-show-summary | |
eec82323 | 457 | |
16409b0b | 458 | "\C-c\C-i" gnus-info-find-node) |
eec82323 LMI |
459 | |
460 | (substitute-key-definition | |
461 | 'undefined 'gnus-tree-read-summary-keys gnus-tree-mode-map)) | |
462 | ||
463 | (defun gnus-tree-make-menu-bar () | |
464 | (unless (boundp 'gnus-tree-menu) | |
465 | (easy-menu-define | |
23f87bed MB |
466 | gnus-tree-menu gnus-tree-mode-map "" |
467 | '("Tree" | |
468 | ["Select article" gnus-tree-select-article t])))) | |
eec82323 LMI |
469 | |
470 | (defun gnus-tree-mode () | |
471 | "Major mode for displaying thread trees." | |
472 | (interactive) | |
6748645f LMI |
473 | (gnus-set-format 'tree-mode) |
474 | (gnus-set-format 'tree t) | |
eec82323 LMI |
475 | (when (gnus-visual-p 'tree-menu 'menu) |
476 | (gnus-tree-make-menu-bar)) | |
477 | (kill-all-local-variables) | |
478 | (gnus-simplify-mode-line) | |
479 | (setq mode-name "Tree") | |
480 | (setq major-mode 'gnus-tree-mode) | |
481 | (use-local-map gnus-tree-mode-map) | |
16409b0b | 482 | (buffer-disable-undo) |
eec82323 LMI |
483 | (setq buffer-read-only t) |
484 | (setq truncate-lines t) | |
485 | (save-excursion | |
486 | (gnus-set-work-buffer) | |
487 | (gnus-tree-node-insert (make-mail-header "") nil) | |
488 | (setq gnus-tree-node-length (1- (point)))) | |
cfcd5c91 | 489 | (gnus-run-mode-hooks 'gnus-tree-mode-hook)) |
eec82323 LMI |
490 | |
491 | (defun gnus-tree-read-summary-keys (&optional arg) | |
492 | "Read a summary buffer key sequence and execute it." | |
493 | (interactive "P") | |
16409b0b GM |
494 | (unless gnus-tree-inhibit |
495 | (let ((buf (current-buffer)) | |
496 | (gnus-tree-inhibit t) | |
497 | win) | |
498 | (set-buffer gnus-article-buffer) | |
499 | (gnus-article-read-summary-keys arg nil t) | |
500 | (when (setq win (get-buffer-window buf)) | |
501 | (select-window win) | |
502 | (when gnus-selected-tree-overlay | |
503 | (goto-char (or (gnus-overlay-end gnus-selected-tree-overlay) 1))) | |
504 | (gnus-tree-minimize))))) | |
eec82323 | 505 | |
a8151ef7 LMI |
506 | (defun gnus-tree-show-summary () |
507 | "Reconfigure windows to show summary buffer." | |
508 | (interactive) | |
509 | (if (not (gnus-buffer-live-p gnus-summary-buffer)) | |
510 | (error "There is no summary buffer for this tree buffer") | |
511 | (gnus-configure-windows 'article) | |
512 | (gnus-summary-goto-subject gnus-current-article))) | |
513 | ||
eec82323 LMI |
514 | (defun gnus-tree-select-article (article) |
515 | "Select the article under point, if any." | |
516 | (interactive (list (gnus-tree-article-number))) | |
517 | (let ((buf (current-buffer))) | |
518 | (when article | |
67d0660b | 519 | (with-current-buffer gnus-summary-buffer |
eec82323 LMI |
520 | (gnus-summary-goto-article article)) |
521 | (select-window (get-buffer-window buf))))) | |
522 | ||
523 | (defun gnus-tree-pick-article (e) | |
524 | "Select the article under the mouse pointer." | |
525 | (interactive "e") | |
526 | (mouse-set-point e) | |
527 | (gnus-tree-select-article (gnus-tree-article-number))) | |
528 | ||
529 | (defun gnus-tree-article-number () | |
530 | (get-text-property (point) 'gnus-number)) | |
531 | ||
532 | (defun gnus-tree-article-region (article) | |
533 | "Return a cons with BEG and END of the article region." | |
16409b0b GM |
534 | (let ((pos (text-property-any |
535 | (point-min) (point-max) 'gnus-number article))) | |
eec82323 LMI |
536 | (when pos |
537 | (cons pos (next-single-property-change pos 'gnus-number))))) | |
538 | ||
eec82323 LMI |
539 | (defun gnus-tree-recenter () |
540 | "Center point in the tree window." | |
541 | (let ((selected (selected-window)) | |
23f87bed | 542 | (tree-window (gnus-get-buffer-window gnus-tree-buffer t))) |
eec82323 LMI |
543 | (when tree-window |
544 | (select-window tree-window) | |
545 | (when gnus-selected-tree-overlay | |
546 | (goto-char (or (gnus-overlay-end gnus-selected-tree-overlay) 1))) | |
547 | (let* ((top (cond ((< (window-height) 4) 0) | |
548 | ((< (window-height) 7) 1) | |
549 | (t 2))) | |
550 | (height (1- (window-height))) | |
551 | (bottom (save-excursion (goto-char (point-max)) | |
552 | (forward-line (- height)) | |
553 | (point)))) | |
23f87bed | 554 | ;; Set the window start to either `bottom', which is the biggest |
eec82323 LMI |
555 | ;; possible valid number, or the second line from the top, |
556 | ;; whichever is the least. | |
557 | (set-window-start | |
558 | tree-window (min bottom (save-excursion | |
559 | (forward-line (- top)) (point))))) | |
560 | (select-window selected)))) | |
561 | ||
562 | (defun gnus-get-tree-buffer () | |
563 | "Return the tree buffer properly initialized." | |
67d0660b | 564 | (with-current-buffer (gnus-get-buffer-create gnus-tree-buffer) |
eec82323 | 565 | (unless (eq major-mode 'gnus-tree-mode) |
eec82323 LMI |
566 | (gnus-tree-mode)) |
567 | (current-buffer))) | |
568 | ||
569 | (defun gnus-tree-minimize () | |
570 | (when (and gnus-tree-minimize-window | |
571 | (not (one-window-p))) | |
572 | (let ((windows 0) | |
573 | tot-win-height) | |
574 | (walk-windows (lambda (window) (incf windows))) | |
575 | (setq tot-win-height | |
576 | (- (frame-height) | |
577 | (* window-min-height (1- windows)) | |
578 | 2)) | |
579 | (let* ((window-min-height 2) | |
580 | (height (count-lines (point-min) (point-max))) | |
581 | (min (max (1- window-min-height) height)) | |
582 | (tot (if (numberp gnus-tree-minimize-window) | |
583 | (min gnus-tree-minimize-window min) | |
584 | min)) | |
585 | (win (get-buffer-window (current-buffer))) | |
586 | (wh (and win (1- (window-height win))))) | |
587 | (setq tot (min tot tot-win-height)) | |
588 | (when (and win | |
589 | (not (eq tot wh))) | |
590 | (let ((selected (selected-window))) | |
591 | (when (ignore-errors (select-window win)) | |
592 | (enlarge-window (- tot wh)) | |
593 | (select-window selected)))))))) | |
594 | ||
595 | ;;; Generating the tree. | |
596 | ||
597 | (defun gnus-tree-node-insert (header sparse &optional adopted) | |
598 | (let* ((dummy (stringp header)) | |
599 | (header (if (vectorp header) header | |
600 | (progn | |
601 | (setq header (make-mail-header "*****")) | |
602 | (mail-header-set-number header 0) | |
603 | (mail-header-set-lines header 0) | |
604 | (mail-header-set-chars header 0) | |
605 | header))) | |
606 | (gnus-tmp-from (mail-header-from header)) | |
607 | (gnus-tmp-subject (mail-header-subject header)) | |
608 | (gnus-tmp-number (mail-header-number header)) | |
609 | (gnus-tmp-name | |
610 | (cond | |
611 | ((string-match "(.+)" gnus-tmp-from) | |
612 | (substring gnus-tmp-from | |
613 | (1+ (match-beginning 0)) (1- (match-end 0)))) | |
614 | ((string-match "<[^>]+> *$" gnus-tmp-from) | |
615 | (let ((beg (match-beginning 0))) | |
616 | (or (and (string-match "^\"[^\"]*\"" gnus-tmp-from) | |
617 | (substring gnus-tmp-from (1+ (match-beginning 0)) | |
618 | (1- (match-end 0)))) | |
619 | (substring gnus-tmp-from 0 beg)))) | |
620 | ((memq gnus-tmp-number sparse) | |
621 | "***") | |
622 | (t gnus-tmp-from))) | |
623 | (gnus-tmp-open-bracket | |
624 | (cond ((memq gnus-tmp-number sparse) | |
625 | (caadr gnus-tree-brackets)) | |
626 | (dummy (caaddr gnus-tree-brackets)) | |
627 | (adopted (car (nth 3 gnus-tree-brackets))) | |
628 | (t (caar gnus-tree-brackets)))) | |
629 | (gnus-tmp-close-bracket | |
630 | (cond ((memq gnus-tmp-number sparse) | |
631 | (cdadr gnus-tree-brackets)) | |
632 | (adopted (cdr (nth 3 gnus-tree-brackets))) | |
633 | (dummy | |
634 | (cdaddr gnus-tree-brackets)) | |
635 | (t (cdar gnus-tree-brackets)))) | |
636 | (buffer-read-only nil) | |
637 | beg end) | |
638 | (gnus-add-text-properties | |
639 | (setq beg (point)) | |
640 | (setq end (progn (eval gnus-tree-line-format-spec) (point))) | |
641 | (list 'gnus-number gnus-tmp-number)) | |
642 | (when (or t (gnus-visual-p 'tree-highlight 'highlight)) | |
643 | (gnus-tree-highlight-node gnus-tmp-number beg end)))) | |
644 | ||
645 | (defun gnus-tree-highlight-node (article beg end) | |
646 | "Highlight current line according to `gnus-summary-highlight'." | |
647 | (let ((list gnus-summary-highlight) | |
648 | face) | |
67d0660b | 649 | (with-current-buffer gnus-summary-buffer |
eec82323 LMI |
650 | (let* ((score (or (cdr (assq article gnus-newsgroup-scored)) |
651 | gnus-summary-default-score 0)) | |
652 | (default gnus-summary-default-score) | |
23f87bed MB |
653 | (default-high gnus-summary-default-high-score) |
654 | (default-low gnus-summary-default-low-score) | |
655 | (uncached (memq article gnus-newsgroup-undownloaded)) | |
656 | (downloaded (not uncached)) | |
eec82323 LMI |
657 | (mark (or (gnus-summary-article-mark article) gnus-unread-mark))) |
658 | ;; Eval the cars of the lists until we find a match. | |
659 | (while (and list | |
660 | (not (eval (caar list)))) | |
661 | (setq list (cdr list))))) | |
662 | (unless (eq (setq face (cdar list)) (get-text-property beg 'face)) | |
1d43a35f CY |
663 | (gnus-put-text-property-excluding-characters-with-faces |
664 | beg end 'face | |
665 | (if (boundp face) (symbol-value face) face))))) | |
eec82323 LMI |
666 | |
667 | (defun gnus-tree-indent (level) | |
668 | (insert (make-string (1- (* (1+ gnus-tree-node-length) level)) ? ))) | |
669 | ||
670 | (defvar gnus-tmp-limit) | |
671 | (defvar gnus-tmp-sparse) | |
672 | (defvar gnus-tmp-indent) | |
673 | ||
674 | (defun gnus-generate-tree (thread) | |
675 | "Generate a thread tree for THREAD." | |
67d0660b | 676 | (with-current-buffer (gnus-get-tree-buffer) |
eec82323 LMI |
677 | (let ((buffer-read-only nil) |
678 | (gnus-tmp-indent 0)) | |
679 | (erase-buffer) | |
680 | (funcall gnus-generate-tree-function thread 0) | |
681 | (gnus-set-mode-line 'tree) | |
682 | (goto-char (point-min)) | |
683 | (gnus-tree-minimize) | |
684 | (gnus-tree-recenter) | |
685 | (let ((selected (selected-window))) | |
23f87bed MB |
686 | (when (gnus-get-buffer-window (set-buffer gnus-tree-buffer) t) |
687 | (select-window (gnus-get-buffer-window (set-buffer gnus-tree-buffer) t)) | |
eec82323 LMI |
688 | (gnus-horizontal-recenter) |
689 | (select-window selected)))))) | |
690 | ||
691 | (defun gnus-generate-horizontal-tree (thread level &optional dummyp adopted) | |
692 | "Generate a horizontal tree." | |
693 | (let* ((dummy (stringp (car thread))) | |
694 | (do (or dummy | |
a8151ef7 LMI |
695 | (and (car thread) |
696 | (memq (mail-header-number (car thread)) | |
697 | gnus-tmp-limit)))) | |
eec82323 LMI |
698 | col beg) |
699 | (if (not do) | |
700 | ;; We don't want this article. | |
701 | (setq thread (cdr thread)) | |
702 | (if (not (bolp)) | |
703 | ;; Not the first article on the line, so we insert a "-". | |
704 | (insert (car gnus-tree-parent-child-edges)) | |
705 | ;; If the level isn't zero, then we insert some indentation. | |
706 | (unless (zerop level) | |
707 | (gnus-tree-indent level) | |
708 | (insert (cadr gnus-tree-parent-child-edges)) | |
01c52d31 | 709 | (setq col (- (setq beg (point)) (point-at-bol) 1)) |
eec82323 LMI |
710 | ;; Draw "|" lines upwards. |
711 | (while (progn | |
712 | (forward-line -1) | |
713 | (forward-char col) | |
16409b0b | 714 | (eq (char-after) ? )) |
eec82323 LMI |
715 | (delete-char 1) |
716 | (insert (caddr gnus-tree-parent-child-edges))) | |
717 | (goto-char beg))) | |
718 | (setq dummyp nil) | |
719 | ;; Insert the article node. | |
720 | (gnus-tree-node-insert (pop thread) gnus-tmp-sparse adopted)) | |
721 | (if (null thread) | |
722 | ;; End of the thread, so we go to the next line. | |
723 | (unless (bolp) | |
724 | (insert "\n")) | |
725 | ;; Recurse downwards in all children of this article. | |
726 | (while thread | |
727 | (gnus-generate-horizontal-tree | |
728 | (pop thread) (if do (1+ level) level) | |
729 | (or dummyp dummy) dummy))))) | |
730 | ||
731 | (defsubst gnus-tree-indent-vertical () | |
732 | (let ((len (- (* (1+ gnus-tree-node-length) gnus-tmp-indent) | |
01c52d31 | 733 | (- (point) (point-at-bol))))) |
eec82323 LMI |
734 | (when (> len 0) |
735 | (insert (make-string len ? ))))) | |
736 | ||
737 | (defsubst gnus-tree-forward-line (n) | |
738 | (while (>= (decf n) 0) | |
739 | (unless (zerop (forward-line 1)) | |
740 | (end-of-line) | |
741 | (insert "\n"))) | |
742 | (end-of-line)) | |
743 | ||
744 | (defun gnus-generate-vertical-tree (thread level &optional dummyp adopted) | |
745 | "Generate a vertical tree." | |
746 | (let* ((dummy (stringp (car thread))) | |
747 | (do (or dummy | |
748 | (and (car thread) | |
749 | (memq (mail-header-number (car thread)) | |
750 | gnus-tmp-limit)))) | |
751 | beg) | |
752 | (if (not do) | |
753 | ;; We don't want this article. | |
754 | (setq thread (cdr thread)) | |
755 | (if (not (save-excursion (beginning-of-line) (bobp))) | |
756 | ;; Not the first article on the line, so we insert a "-". | |
757 | (progn | |
758 | (gnus-tree-indent-vertical) | |
759 | (insert (make-string (/ gnus-tree-node-length 2) ? )) | |
760 | (insert (caddr gnus-tree-parent-child-edges)) | |
761 | (gnus-tree-forward-line 1)) | |
762 | ;; If the level isn't zero, then we insert some indentation. | |
763 | (unless (zerop gnus-tmp-indent) | |
764 | (gnus-tree-forward-line (1- (* 2 level))) | |
765 | (gnus-tree-indent-vertical) | |
766 | (delete-char -1) | |
767 | (insert (cadr gnus-tree-parent-child-edges)) | |
768 | (setq beg (point)) | |
a8151ef7 | 769 | (forward-char -1) |
eec82323 | 770 | ;; Draw "-" lines leftwards. |
9b40100a | 771 | (while (and (not (bobp)) |
16409b0b | 772 | (eq (char-after (1- (point))) ? )) |
a8151ef7 LMI |
773 | (delete-char -1) |
774 | (insert (car gnus-tree-parent-child-edges)) | |
775 | (forward-char -1)) | |
eec82323 LMI |
776 | (goto-char beg) |
777 | (gnus-tree-forward-line 1))) | |
778 | (setq dummyp nil) | |
779 | ;; Insert the article node. | |
780 | (gnus-tree-indent-vertical) | |
781 | (gnus-tree-node-insert (pop thread) gnus-tmp-sparse adopted) | |
782 | (gnus-tree-forward-line 1)) | |
783 | (if (null thread) | |
784 | ;; End of the thread, so we go to the next line. | |
785 | (progn | |
786 | (goto-char (point-min)) | |
787 | (end-of-line) | |
788 | (incf gnus-tmp-indent)) | |
789 | ;; Recurse downwards in all children of this article. | |
790 | (while thread | |
791 | (gnus-generate-vertical-tree | |
792 | (pop thread) (if do (1+ level) level) | |
793 | (or dummyp dummy) dummy))))) | |
794 | ||
795 | ;;; Interface functions. | |
796 | ||
797 | (defun gnus-possibly-generate-tree (article &optional force) | |
798 | "Generate the thread tree for ARTICLE if it isn't displayed already." | |
67d0660b | 799 | (when (with-current-buffer gnus-summary-buffer |
eec82323 LMI |
800 | (and gnus-use-trees |
801 | gnus-show-threads | |
802 | (vectorp (gnus-summary-article-header article)))) | |
803 | (save-excursion | |
67d0660b | 804 | (let ((top (with-current-buffer gnus-summary-buffer |
eec82323 LMI |
805 | (gnus-cut-thread |
806 | (gnus-remove-thread | |
807 | (mail-header-id | |
808 | (gnus-summary-article-header article)) | |
809 | t)))) | |
810 | (gnus-tmp-limit gnus-newsgroup-limit) | |
811 | (gnus-tmp-sparse gnus-newsgroup-sparse)) | |
812 | (when (or force | |
813 | (not (eq top gnus-tree-displayed-thread))) | |
814 | (gnus-generate-tree top) | |
815 | (setq gnus-tree-displayed-thread top)))))) | |
816 | ||
817 | (defun gnus-tree-open (group) | |
818 | (gnus-get-tree-buffer)) | |
819 | ||
820 | (defun gnus-tree-close (group) | |
6748645f | 821 | (gnus-kill-buffer gnus-tree-buffer)) |
eec82323 | 822 | |
23f87bed MB |
823 | (defun gnus-tree-perhaps-minimize () |
824 | (when (and gnus-tree-minimize-window | |
825 | (get-buffer gnus-tree-buffer)) | |
67d0660b | 826 | (with-current-buffer gnus-tree-buffer |
23f87bed MB |
827 | (gnus-tree-minimize)))) |
828 | ||
eec82323 LMI |
829 | (defun gnus-highlight-selected-tree (article) |
830 | "Highlight the selected article in the tree." | |
831 | (let ((buf (current-buffer)) | |
832 | region) | |
833 | (set-buffer gnus-tree-buffer) | |
834 | (when (setq region (gnus-tree-article-region article)) | |
835 | (when (or (not gnus-selected-tree-overlay) | |
836 | (gnus-extent-detached-p gnus-selected-tree-overlay)) | |
837 | ;; Create a new overlay. | |
838 | (gnus-overlay-put | |
9b40100a SM |
839 | (setq gnus-selected-tree-overlay |
840 | (gnus-make-overlay (point-min) (1+ (point-min)))) | |
eec82323 LMI |
841 | 'face gnus-selected-tree-face)) |
842 | ;; Move the overlay to the article. | |
843 | (gnus-move-overlay | |
844 | gnus-selected-tree-overlay (goto-char (car region)) (cdr region)) | |
845 | (gnus-tree-minimize) | |
846 | (gnus-tree-recenter) | |
847 | (let ((selected (selected-window))) | |
23f87bed MB |
848 | (when (gnus-get-buffer-window (set-buffer gnus-tree-buffer) t) |
849 | (select-window (gnus-get-buffer-window (set-buffer gnus-tree-buffer) t)) | |
eec82323 LMI |
850 | (gnus-horizontal-recenter) |
851 | (select-window selected)))) | |
23f87bed | 852 | ;; If we remove this save-excursion, it updates the wrong mode lines?!? |
67d0660b | 853 | (with-current-buffer gnus-tree-buffer |
eec82323 LMI |
854 | (gnus-set-mode-line 'tree)) |
855 | (set-buffer buf))) | |
856 | ||
857 | (defun gnus-tree-highlight-article (article face) | |
67d0660b | 858 | (with-current-buffer (gnus-get-tree-buffer) |
eec82323 LMI |
859 | (let (region) |
860 | (when (setq region (gnus-tree-article-region article)) | |
861 | (gnus-put-text-property (car region) (cdr region) 'face face) | |
862 | (set-window-point | |
23f87bed | 863 | (gnus-get-buffer-window (current-buffer) t) (cdr region)))))) |
eec82323 | 864 | |
eec82323 LMI |
865 | ;;; Allow redefinition of functions. |
866 | (gnus-ems-redefine) | |
867 | ||
868 | (provide 'gnus-salt) | |
869 | ||
870 | ;;; gnus-salt.el ends here |