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annotate lisp/modeline.el @ 5640:e6b5c49f9e13
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author | Vin Shelton <acs@xemacs.org> |
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date | Sun, 08 Jan 2012 22:29:06 -0500 |
parents | cf2733b1ff4b |
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rev | line source |
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428 | 1 ;;; modeline.el --- modeline hackery. |
2 | |
3 ;; Copyright (C) 1988, 1992-1994, 1997 Free Software Foundation, Inc. | |
771 | 4 ;; Copyright (C) 1995, 1996, 2002 Ben Wing. |
428 | 5 |
6 ;; Maintainer: XEmacs Development Team | |
7 ;; Keywords: extensions, dumped | |
8 | |
9 ;; This file is part of XEmacs. | |
10 | |
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11 ;; XEmacs is free software: you can redistribute it and/or modify it |
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12 ;; under the terms of the GNU General Public License as published by the |
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13 ;; Free Software Foundation, either version 3 of the License, or (at your |
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14 ;; option) any later version. |
428 | 15 |
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16 ;; XEmacs is distributed in the hope that it will be useful, but WITHOUT |
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17 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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18 ;; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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19 ;; for more details. |
428 | 20 |
21 ;; You should have received a copy of the GNU General Public License | |
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22 ;; along with XEmacs. If not, see <http://www.gnu.org/licenses/>. |
428 | 23 |
24 ;;; Synched up with: Not in FSF. | |
25 | |
26 ;;; Commentary: | |
27 | |
28 ;; This file is dumped with XEmacs. | |
29 | |
30 ;;; Code: | |
31 | |
32 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
33 ;;; General mouse modeline stuff ;;; | |
34 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
35 | |
36 (defgroup modeline nil | |
37 "Modeline customizations." | |
38 :group 'environment) | |
39 | |
442 | 40 (defcustom modeline-3d-p ;; added for the options menu |
41 (let ((thickness | |
42 (specifier-instance modeline-shadow-thickness))) | |
43 (and (integerp thickness) | |
44 (> thickness 0))) | |
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45 "Whether the modeline is displayed with raised, 3-d appearance. |
771 | 46 This option only has an effect when set using `customize-set-variable', |
47 or through the Options menu." | |
442 | 48 :group 'display |
49 :type 'boolean | |
50 :set #'(lambda (var val) | |
51 (if val | |
52 (set-specifier modeline-shadow-thickness 2) | |
53 (set-specifier modeline-shadow-thickness 0)) | |
54 (redraw-modeline t) | |
55 (setq modeline-3d-p val)) | |
56 ) | |
57 | |
428 | 58 (defcustom drag-divider-event-lag 150 |
59 "*The pause (in msecs) between divider drag events before redisplaying. | |
60 If this value is too small, dragging will be choppy because redisplay cannot | |
61 keep up. If it is too large, dragging will be choppy because of the explicit | |
62 redisplay delay specified." | |
63 :type 'integer | |
64 ;; #### Fix group. | |
65 :group 'modeline) | |
66 | |
67 (define-obsolete-variable-alias | |
68 'drag-modeline-event-lag | |
69 'drag-divider-event-lag) | |
70 | |
71 (defcustom modeline-click-swaps-buffers nil | |
72 "*If non-nil, clicking on the modeline changes the current buffer. | |
73 Click on the left half of the modeline cycles forward through the | |
74 buffer list and clicking on the right half cycles backward." | |
75 :type 'boolean | |
76 :group 'modeline) | |
77 | |
438 | 78 (defcustom modeline-scrolling-method nil |
79 "*If non-nil, dragging the modeline with the mouse may also scroll its | |
80 text horizontally (vertical motion controls window resizing and horizontal | |
81 motion controls modeline scrolling). | |
82 | |
83 With a value of t, the modeline text is scrolled in the same direction as | |
84 the mouse motion. With a value of 'scrollbar, the modeline is considered as | |
771 | 85 a scrollbar for its own text, which then moves in the opposite direction. |
86 | |
87 This option should be set using `customize-set-variable'." | |
438 | 88 :type '(choice (const :tag "none" nil) |
89 (const :tag "text" t) | |
90 (const :tag "scrollbar" scrollbar)) | |
91 :set (lambda (sym val) | |
92 (set-default sym val) | |
93 (when (featurep 'x) | |
94 (cond ((eq val t) | |
95 (set-glyph-image modeline-pointer-glyph "hand2" 'global 'x)) | |
96 ((eq val 'scrollbar) | |
97 (set-glyph-image modeline-pointer-glyph "fleur" 'global 'x)) | |
98 (t | |
99 (set-glyph-image modeline-pointer-glyph "sb_v_double_arrow" | |
442 | 100 'global 'x)))) |
101 (when (featurep 'mswindows) | |
102 (cond ((eq val t) | |
103 (set-glyph-image modeline-pointer-glyph | |
104 [mswindows-resource :resource-type cursor | |
105 :resource-id "SizeAll"] | |
106 'global 'mswindows)) | |
107 ((eq val 'scrollbar) | |
108 (set-glyph-image modeline-pointer-glyph | |
109 [mswindows-resource :resource-type cursor | |
110 :resource-id "Normal"] | |
111 'global 'mswindows)) | |
112 (t | |
113 (set-glyph-image modeline-pointer-glyph | |
114 [mswindows-resource :resource-type cursor | |
115 :resource-id "SizeNS"] | |
116 'global 'mswindows))))) | |
438 | 117 :group 'modeline) |
118 | |
428 | 119 (defun mouse-drag-modeline (event) |
120 "Resize a window by dragging its modeline. | |
121 This command should be bound to a button-press event in modeline-map. | |
122 Holding down a mouse button and moving the mouse up and down will | |
438 | 123 make the clicked-on window taller or shorter. |
124 | |
125 See also the variable `modeline-scrolling-method'." | |
428 | 126 (interactive "e") |
127 (or (button-press-event-p event) | |
128 (error "%s must be invoked by a mouse-press" this-command)) | |
129 (or (event-over-modeline-p event) | |
130 (error "not over a modeline")) | |
131 ;; Give the modeline a "pressed" look. --hniksic | |
132 (let-specifier ((modeline-shadow-thickness | |
133 (- (specifier-instance modeline-shadow-thickness | |
134 (event-window event))) | |
135 (event-window event))) | |
136 (let ((done nil) | |
137 (depress-line (event-y event)) | |
138 (start-event-frame (event-frame event)) | |
139 (start-event-window (event-window event)) | |
140 (start-nwindows (count-windows t)) | |
438 | 141 (hscroll-delta (face-width 'modeline)) |
142 (start-hscroll (modeline-hscroll (event-window event))) | |
143 (start-x-pixel (event-x-pixel event)) | |
428 | 144 (last-timestamp 0) |
145 default-line-height | |
146 modeline-height | |
147 should-enlarge-minibuffer | |
148 event min-height minibuffer y top bot edges wconfig growth) | |
149 (setq minibuffer (minibuffer-window start-event-frame) | |
150 default-line-height (face-height 'default start-event-window) | |
151 min-height (+ (* window-min-height default-line-height) | |
152 ;; Don't let the window shrink by a | |
153 ;; non-multiple of the default line | |
154 ;; height. (enlarge-window -1) will do | |
155 ;; this if the difference between the | |
156 ;; current window height and the minimum | |
157 ;; window height is less than the height | |
158 ;; of the default font. These extra | |
159 ;; lost pixels of height don't come back | |
160 ;; if you grow the window again. This | |
161 ;; can make it impossible to drag back | |
162 ;; to the exact original size, which is | |
163 ;; disconcerting. | |
164 (% (window-pixel-height start-event-window) | |
165 default-line-height)) | |
166 modeline-height | |
167 (if (specifier-instance has-modeline-p start-event-window) | |
168 (+ (face-height 'modeline start-event-window) | |
169 (* 2 (specifier-instance modeline-shadow-thickness | |
170 start-event-window))) | |
171 (* 2 (specifier-instance modeline-shadow-thickness | |
172 start-event-window)))) | |
173 (if (not (eq (window-frame minibuffer) start-event-frame)) | |
174 (setq minibuffer nil)) | |
175 (if (and (null minibuffer) (one-window-p t)) | |
176 (error "Attempt to resize sole window")) | |
177 ;; if this is the bottommost ordinary window, then to | |
178 ;; move its modeline the minibuffer must be enlarged. | |
179 (setq should-enlarge-minibuffer | |
180 (and minibuffer (window-lowest-p start-event-window))) | |
181 ;; loop reading events | |
182 (while (not done) | |
183 (setq event (next-event event)) | |
184 ;; requeue event and quit if this is a misc-user, eval or | |
185 ;; keypress event. | |
186 ;; quit if this is a button press or release event, or if the event | |
187 ;; occurred in some other frame. | |
188 ;; drag if this is a mouse motion event and the time | |
189 ;; between this event and the last event is greater than | |
190 ;; drag-divider-event-lag. | |
191 ;; do nothing if this is any other kind of event. | |
192 (cond ((or (misc-user-event-p event) | |
193 (key-press-event-p event)) | |
194 (setq unread-command-events (nconc unread-command-events | |
195 (list event)) | |
196 done t)) | |
197 ((button-release-event-p event) | |
198 (setq done t) | |
199 ;; Consider we have a mouse click neither X pos (modeline | |
200 ;; scroll) nore Y pos (modeline drag) have changed. | |
201 (and modeline-click-swaps-buffers | |
202 (= depress-line (event-y event)) | |
438 | 203 (or (not modeline-scrolling-method) |
204 (= start-hscroll | |
205 (modeline-hscroll start-event-window))) | |
428 | 206 (modeline-swap-buffers event))) |
207 ((button-event-p event) | |
208 (setq done t)) | |
209 ((not (motion-event-p event)) | |
210 (dispatch-event event)) | |
211 ((not (eq start-event-frame (event-frame event))) | |
212 (setq done t)) | |
213 ((< (abs (- (event-timestamp event) last-timestamp)) | |
214 drag-divider-event-lag) | |
215 nil) | |
216 (t | |
438 | 217 (when modeline-scrolling-method |
218 (let ((delta (/ (- (event-x-pixel event) start-x-pixel) | |
219 hscroll-delta))) | |
220 (set-modeline-hscroll start-event-window | |
221 (if (eq modeline-scrolling-method t) | |
222 (- start-hscroll delta) | |
223 (+ start-hscroll delta))) | |
224 )) | |
428 | 225 (setq last-timestamp (event-timestamp event) |
226 y (event-y-pixel event) | |
227 edges (window-pixel-edges start-event-window) | |
228 top (nth 1 edges) | |
229 bot (nth 3 edges)) | |
230 ;; scale back a move that would make the | |
231 ;; window too short. | |
232 (cond ((< (- y top (- modeline-height)) min-height) | |
233 (setq y (+ top min-height (- modeline-height))))) | |
234 ;; compute size change needed | |
235 (setq growth (- y bot (/ (- modeline-height) 2)) | |
236 wconfig (current-window-configuration)) | |
237 ;; grow/shrink minibuffer? | |
238 (if should-enlarge-minibuffer | |
239 (progn | |
240 ;; yes. scale back shrinkage if it | |
241 ;; would make the minibuffer less than 1 | |
242 ;; line tall. | |
243 ;; | |
244 ;; also flip the sign of the computed growth, | |
245 ;; since if we want to grow the window with the | |
246 ;; modeline we need to shrink the minibuffer | |
247 ;; and vice versa. | |
248 (if (and (> growth 0) | |
249 (< (- (window-pixel-height minibuffer) | |
250 growth) | |
251 default-line-height)) | |
252 (setq growth | |
253 (- (window-pixel-height minibuffer) | |
254 default-line-height))) | |
255 (setq growth (- growth)))) | |
256 ;; window grow and shrink by lines not pixels, so | |
257 ;; divide the pixel height by the height of the | |
258 ;; default face. | |
259 (setq growth (/ growth default-line-height)) | |
260 ;; grow/shrink the window | |
261 (enlarge-window growth nil (if should-enlarge-minibuffer | |
262 minibuffer | |
263 start-event-window)) | |
264 ;; if this window's growth caused another | |
265 ;; window to be deleted because it was too | |
266 ;; short, rescind the change. | |
267 ;; | |
268 ;; if size change caused space to be stolen | |
269 ;; from a window above this one, rescind the | |
270 ;; change, but only if we didn't grow/shrink | |
271 ;; the minibuffer. minibuffer size changes | |
272 ;; can cause all windows to shrink... no way | |
273 ;; around it. | |
274 (if (or (/= start-nwindows (count-windows t)) | |
275 (and (not should-enlarge-minibuffer) | |
276 (/= top (nth 1 (window-pixel-edges | |
277 start-event-window))))) | |
278 (set-window-configuration wconfig)))))))) | |
279 | |
280 ;; from Bob Weiner (bob_weiner@pts.mot.com) | |
281 ;; Whether this function should be called is now decided in | |
282 ;; mouse-drag-modeline - dverna feb. 98 | |
283 (defun modeline-swap-buffers (event) | |
284 "Handle mouse clicks on modeline by switching buffers. | |
285 If click on left half of a frame's modeline, bury current buffer. | |
286 If click on right half of a frame's modeline, raise bottommost buffer. | |
287 Arg EVENT is the button release event that occurred on the modeline." | |
288 (or (event-over-modeline-p event) | |
289 (error "not over a modeline")) | |
290 (or (button-release-event-p event) | |
291 (error "not a button release event")) | |
292 (if (< (event-x event) (/ (window-width (event-window event)) 2)) | |
293 ;; On left half of modeline, bury current buffer, | |
294 ;; displaying second buffer on list. | |
295 (mouse-bury-buffer event) | |
296 ;; On right half of modeline, raise and display bottommost | |
297 ;; buffer in buffer list. | |
298 (mouse-unbury-buffer event))) | |
299 | |
300 (defconst modeline-menu | |
301 '("Window Commands" | |
302 ["Delete Window Above" delete-window t] | |
303 ["Delete Other Windows" delete-other-windows t] | |
304 ["Split Window Above" split-window-vertically t] | |
305 ["Split Window Horizontally" split-window-horizontally t] | |
306 ["Balance Windows" balance-windows t] | |
307 )) | |
308 | |
309 (defun modeline-menu (event) | |
310 (interactive "e") | |
311 (popup-menu-and-execute-in-window | |
312 (cons (format "Window Commands for %S:" | |
313 (buffer-name (event-buffer event))) | |
314 (cdr modeline-menu)) | |
315 event)) | |
316 | |
317 (defvar modeline-map (make-sparse-keymap 'modeline-map) | |
318 "Keymap consulted for mouse-clicks on the modeline of a window. | |
319 This variable may be buffer-local; its value will be looked up in | |
320 the buffer of the window whose modeline was clicked upon.") | |
321 | |
322 (define-key modeline-map 'button1 'mouse-drag-modeline) | |
323 ;; button2 selects the window without setting point | |
324 (define-key modeline-map 'button2 (lambda () (interactive "@"))) | |
325 (define-key modeline-map 'button3 'modeline-menu) | |
326 | |
327 (make-face 'modeline-mousable "Face for mousable portions of the modeline.") | |
328 (set-face-parent 'modeline-mousable 'modeline nil '(default)) | |
329 (when (featurep 'window-system) | |
440 | 330 (set-face-foreground 'modeline-mousable "firebrick" nil '(default color win)) |
331 (set-face-font 'modeline-mousable [bold] nil '(default mono win)) | |
332 (set-face-font 'modeline-mousable [bold] nil '(default grayscale win))) | |
428 | 333 |
334 (defmacro make-modeline-command-wrapper (command) | |
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335 "Return a function object wrapping COMMAND, for use with the modeline. |
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336 |
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337 The function (itself a command, with \"e\" as its interactive spec) calls |
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338 COMMAND with the appropriate window selected, and is suitable as a binding |
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339 in the keymaps associated with the modeline." |
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340 (cond |
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341 ((and-fboundp 'cl-const-expr-p (cl-const-expr-p command)) |
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342 `#'(lambda (event) |
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343 (interactive "e") |
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344 (save-selected-window |
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345 (select-window (event-window event)) |
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346 (call-interactively ,command)))) |
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347 ((eval-when-compile (cl-compiling-file)) |
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348 (let ((compiled |
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349 (eval-when-compile |
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350 (byte-compile-sexp |
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351 #'(lambda (event) |
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352 (interactive "e") |
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353 (save-selected-window |
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354 (select-window (event-window event)) |
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355 (call-interactively 'placeholder))))))) |
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356 `(make-byte-code ',(compiled-function-arglist compiled) |
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357 ,(compiled-function-instructions compiled) |
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358 (vector ,@(subst command ''placeholder |
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359 (mapcar 'quote-maybe |
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360 (compiled-function-constants compiled)) |
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361 :test 'equal)) |
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362 ,(compiled-function-stack-depth compiled) |
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363 ,(compiled-function-doc-string compiled) |
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364 ,(quote-maybe (second (compiled-function-interactive compiled)))))) |
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365 (t |
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366 `(lexical-let ((command ,command)) |
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367 #'(lambda (event) |
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368 (interactive "e") |
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369 (save-selected-window |
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370 (select-window (event-window event)) |
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371 (call-interactively command))))))) |
428 | 372 |
373 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
374 ;;; Minor modes ;;; | |
375 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
376 | |
377 (defvar minor-mode-alist nil | |
378 "Alist saying how to show minor modes in the modeline. | |
379 Each element looks like (VARIABLE STRING); | |
380 STRING is included in the modeline iff VARIABLE's value is non-nil. | |
381 | |
382 Actually, STRING need not be a string; any possible modeline element | |
383 is okay. See `modeline-format'.") | |
384 | |
385 ;; Used by C code (lookup-key and friends) but defined here. | |
386 (defvar minor-mode-map-alist nil | |
387 "Alist of keymaps to use for minor modes. | |
388 Each element looks like (VARIABLE . KEYMAP); KEYMAP is used to read | |
389 key sequences and look up bindings iff VARIABLE's value is non-nil. | |
390 If two active keymaps bind the same key, the keymap appearing earlier | |
391 in the list takes precedence.") | |
392 | |
393 (make-face 'modeline-mousable-minor-mode | |
394 "Face for mousable minor-mode strings in the modeline.") | |
395 (set-face-parent 'modeline-mousable-minor-mode 'modeline-mousable nil | |
396 '(default)) | |
397 (when (featurep 'window-system) | |
440 | 398 (set-face-foreground 'modeline-mousable-minor-mode '("green4" "forestgreen") |
399 nil '(default color win))) | |
428 | 400 |
401 (defvar modeline-mousable-minor-mode-extent (make-extent nil nil) | |
402 ;; alliteration at its finest. | |
403 "Extent managing the mousable minor mode modeline strings.") | |
404 (set-extent-face modeline-mousable-minor-mode-extent | |
405 'modeline-mousable-minor-mode) | |
406 | |
407 ;; This replaces the idiom | |
408 ;; | |
409 ;; (or (assq 'isearch-mode minor-mode-alist) | |
410 ;; (setq minor-mode-alist | |
411 ;; (purecopy | |
412 ;; (append minor-mode-alist | |
413 ;; '((isearch-mode isearch-mode)))))) | |
414 | |
415 (defun add-minor-mode (toggle name &optional keymap after toggle-fun) | |
416 "Add a minor mode to `minor-mode-alist' and `minor-mode-map-alist'. | |
417 | |
418 TOGGLE is a symbol whose value as a variable specifies whether the | |
419 minor mode is active. | |
420 | |
421 NAME is the name that should appear in the modeline. It should either | |
422 be a string beginning with a space, or a symbol with a similar string | |
423 as its value. | |
424 | |
425 KEYMAP is a keymap to make active when the minor mode is active. | |
426 | |
427 AFTER is the toggling symbol used for another minor mode. If AFTER is | |
428 non-nil, then it is used to position the new mode in the minor-mode | |
429 alists. | |
430 | |
431 TOGGLE-FUN specifies an interactive function that is called to toggle | |
432 the mode on and off; this affects what happens when button2 is pressed | |
433 on the mode, and when button3 is pressed somewhere in the list of | |
434 modes. If TOGGLE-FUN is nil and TOGGLE names an interactive function, | |
435 TOGGLE is used as the toggle function. | |
436 | |
437 Example: (add-minor-mode 'view-minor-mode \" View\" view-mode-map)" | |
438 (let* ((add-elt #'(lambda (elt sym) | |
439 (let (place) | |
440 (cond ((null after) ; add to front | |
441 (push elt (symbol-value sym))) | |
442 ((and (not (eq after t)) | |
443 (setq place (memq (assq after | |
444 (symbol-value sym)) | |
445 (symbol-value sym)))) | |
446 (push elt (cdr place))) | |
447 (t | |
448 (set sym (append (symbol-value sym) | |
449 (list elt)))))) | |
450 (symbol-value sym))) | |
451 el toggle-keymap) | |
452 (if toggle-fun | |
453 (check-argument-type 'commandp toggle-fun) | |
454 (when (commandp toggle) | |
455 (setq toggle-fun toggle))) | |
456 (when (and toggle-fun name) | |
457 (setq toggle-keymap (make-sparse-keymap | |
458 (intern (concat "modeline-minor-" | |
459 (symbol-name toggle) | |
460 "-map")))) | |
461 (define-key toggle-keymap 'button2 | |
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462 (make-modeline-command-wrapper toggle-fun)) |
428 | 463 (put toggle 'modeline-toggle-function toggle-fun)) |
464 (when name | |
465 (let ((hacked-name | |
466 (if toggle-keymap | |
467 (cons (let ((extent (make-extent nil nil))) | |
468 (set-extent-keymap extent toggle-keymap) | |
469 (set-extent-property | |
470 extent 'help-echo | |
471 (concat "button2 turns off " | |
472 (if (symbolp toggle-fun) | |
473 (symbol-name toggle-fun) | |
474 (symbol-name toggle)))) | |
475 extent) | |
476 (cons modeline-mousable-minor-mode-extent name)) | |
477 name))) | |
478 (if (setq el (assq toggle minor-mode-alist)) | |
479 (setcdr el (list hacked-name)) | |
438 | 480 (funcall add-elt |
428 | 481 (list toggle hacked-name) |
482 'minor-mode-alist)))) | |
483 (when keymap | |
484 (if (setq el (assq toggle minor-mode-map-alist)) | |
485 (setcdr el keymap) | |
486 (funcall add-elt | |
487 (cons toggle keymap) | |
488 'minor-mode-map-alist))))) | |
489 | |
695 | 490 (defcustom abbrev-mode-line-string " Abbrev" |
491 "*String to display in the modeline when `abbrev-mode' is active. | |
492 Set this to nil if you don't want a modeline indicator." | |
493 :type '(choice string | |
729 | 494 (const :tag "none" nil)) |
495 :group 'abbrev-mode) | |
695 | 496 |
497 (defcustom overwrite-mode-line-string " Ovwrt" | |
498 "*String to display in the modeline when `overwrite-mode' is active. | |
499 Set this to nil if you don't want a modeline indicator." | |
500 :type '(choice string | |
729 | 501 (const :tag "none" nil)) |
502 :group 'editing-basics) | |
695 | 503 |
504 (defcustom auto-fill-mode-line-string " Fill" | |
505 "*String to display in the modeline when `auto-fill-mode' is active. | |
506 Set this to nil if you don't want a modeline indicator." | |
507 :type '(choice string | |
729 | 508 (const :tag "none" nil)) |
509 :group 'fill) | |
695 | 510 |
511 (defcustom defining-kbd-macro-mode-line-string " Def" | |
512 "*String to display in the modeline when `defining-kbd-macro' is active. | |
513 Set this to nil if you don't want a modeline indicator." | |
514 :type '(choice string | |
729 | 515 (const :tag "none" nil)) |
516 :group 'keyboard) | |
695 | 517 |
428 | 518 ;; #### TODO: Add `:menu-tag' keyword to add-minor-mode. Or create a |
519 ;; separate function to manage the minor mode menu. | |
520 | |
521 ;(put 'abbrev-mode :menu-tag "Abbreviation Expansion") | |
695 | 522 (add-minor-mode 'abbrev-mode 'abbrev-mode-line-string) |
428 | 523 ;; only when visiting a file... |
695 | 524 (add-minor-mode 'overwrite-mode 'overwrite-mode-line-string) |
428 | 525 ;(put 'auto-fill-function :menu-tag "Auto Fill") |
695 | 526 (add-minor-mode 'auto-fill-function 'auto-fill-mode-line-string |
527 nil nil 'auto-fill-mode) | |
428 | 528 |
529 ;(put 'defining-kbd-macro :menu-tag "Keyboard Macro") | |
695 | 530 (add-minor-mode 'defining-kbd-macro 'defining-kbd-macro-mode-line-string |
531 nil nil | |
428 | 532 (lambda () |
533 (interactive) | |
534 (if defining-kbd-macro | |
535 (progn | |
536 ;; #### This means to disregard the last event. | |
537 ;; It is needed because the last recorded | |
538 ;; event is usually the mouse event that | |
539 ;; invoked the menu item (and this function), | |
540 ;; and having it in the macro causes problems. | |
541 (zap-last-kbd-macro-event) | |
542 (end-kbd-macro nil)) | |
543 (start-kbd-macro nil)))) | |
544 | |
545 (defun modeline-minor-mode-menu (event) | |
546 "The menu that pops up when you press `button3' inside the | |
547 parentheses on the modeline." | |
548 (interactive "e") | |
549 (save-excursion | |
550 (set-buffer (event-buffer event)) | |
551 (popup-menu-and-execute-in-window | |
552 (cons | |
553 "Minor Mode Toggles" | |
554 (sort | |
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555 (mapcan |
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556 #'(lambda (x) |
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557 (let* ((toggle-sym (car x)) |
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558 (toggle-fun (or (get toggle-sym |
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559 'modeline-toggle-function) |
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560 (and (commandp toggle-sym) |
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561 toggle-sym))) |
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562 (menu-tag (symbol-name (if (symbolp toggle-fun) |
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563 toggle-fun |
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564 toggle-sym)) |
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565 ;; Here a function should maybe be invoked to |
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566 ;; beautify the symbol's menu appearance. |
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567 )) |
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568 (and toggle-fun |
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569 (list (vector menu-tag |
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570 toggle-fun |
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571 ;; The following two are wrong because of |
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572 ;; possible name clashes. |
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573 ;:active (get toggle-sym :active t) |
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574 ;:included (get toggle-sym :included t) |
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575 :style 'toggle |
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576 :selected (and (boundp toggle-sym) |
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577 toggle-sym)))))) |
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578 minor-mode-alist) |
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579 (lambda (e1 e2) (string< (aref e1 0) (aref e2 0))))) |
428 | 580 event))) |
581 | |
582 (defvar modeline-minor-mode-map (make-sparse-keymap 'modeline-minor-mode-map) | |
583 "Keymap consulted for mouse-clicks on the minor-mode modeline list.") | |
584 (define-key modeline-minor-mode-map 'button3 'modeline-minor-mode-menu) | |
585 | |
586 (defvar modeline-minor-mode-extent (make-extent nil nil) | |
587 "Extent covering the minor mode modeline strings.") | |
588 (set-extent-face modeline-minor-mode-extent 'modeline-mousable) | |
589 (set-extent-keymap modeline-minor-mode-extent modeline-minor-mode-map) | |
590 | |
591 | |
592 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
771 | 593 ;;; Modeline definition ;;; |
428 | 594 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
595 | |
771 | 596 (defmacro define-modeline-control (name contents doc-string &optional face |
597 help-echo) | |
598 "Define a modeline control named NAME, a symbol. | |
599 A modeline control is a section of the modeline whose contents can easily | |
600 be changed independently of the rest of the modeline, which can have its | |
601 own color, and which can have its own mouse commands, which apply when the | |
602 mouse is over the control. | |
603 | |
604 Logically, a modeline control should be an object; but we have terrible | |
605 object support in XEmacs, and so history has given us a series of related | |
606 variables, which [hopefully] all follow the same conventions. | |
607 | |
608 Three variables are created: | |
609 | |
610 1. The variable holding the control specification is called | |
611 `modeline-NAME', and is automatically buffer-local. | |
612 | |
613 2. The variable holding the extent that covers the control area in the | |
614 modeline is called `modeline-NAME-extent'. Onto this extent, colors and | |
615 keymaps (and possibly glyphs?) can be added, and will be noticed by the | |
616 modeline redisplay code. The attachment of the extent and its control | |
617 is done somewhere in the modeline specification: either in the main spec | |
618 in `modeline-format', or in some other control, like this: | |
619 | |
620 (cons modeline-NAME-extent 'modeline-NAME) | |
621 | |
622 3. The keymap holding the mousable commands for the control is called | |
623 `modeline-NAME-map'. This is automatically attached to the extent by | |
624 this macro. | |
625 | |
626 Initial contents of the control are CONTENTS (see `modeline-format' for | |
627 information about the structure of this contents). DOC-STRING specifies | |
628 help text that will be placed in the control variable's documentation, | |
629 indicating what's supposed to be in the control. | |
630 | |
631 Optional argument FACE specifies the face of the control's | |
632 extent. (`modeline-mousable' is a good choice if your control is, in fact, | |
633 mousable (i.e. it has some mouse commands defined for it). Optional | |
634 argument HELP-ECHO specifies some help-echo to be displayed when the mouse | |
635 moves over the control, indicating what mouse strokes are available. " | |
636 (let ((control-var (intern (format "modeline-%s" name))) | |
637 (extent-var (intern (format "modeline-%s-extent" name))) | |
638 (map-var (intern (format "modeline-%s-map" name))) | |
639 ) | |
640 `(progn | |
641 (defconst ,control-var ,contents | |
642 ,(format "%s | |
643 | |
644 The format of the contents of this variable is documented in | |
645 `modeline-format'. The way the control is displayed can be changed by | |
646 setting the face of `%s'. Mouse commands | |
647 for the control can be set using `%s'." doc-string extent-var map-var)) | |
648 (make-variable-buffer-local ',control-var) | |
649 (defvar ,extent-var (make-extent nil nil) | |
650 ,(format "Extent covering the `%s' control." control-var)) | |
651 (defvar ,map-var (make-sparse-keymap 'modeline-narrowed-map) | |
652 ,(format "Keymap consulted for mouse-clicks on the `%s' control." | |
653 control-var)) | |
654 (set-extent-face ,extent-var ,face) | |
655 (set-extent-keymap ,extent-var ,map-var) | |
656 (set-extent-property ,extent-var 'help-echo ,help-echo)))) | |
657 (put 'define-modeline-control 'lisp-indent-function 2) | |
658 | |
659 ;; ------------------------ modeline buffer id ------------------- | |
660 | |
428 | 661 (defun modeline-buffers-menu (event) |
662 (interactive "e") | |
663 (popup-menu-and-execute-in-window | |
664 '("Buffers Popup Menu" | |
665 :filter buffers-menu-filter | |
666 ["List All Buffers" list-buffers t] | |
667 "--" | |
668 ) | |
669 event)) | |
670 | |
771 | 671 (define-modeline-control buffer-id-left |
672 'modeline-modified-buffer-highlighted-name ;; "XEmacs:" | |
673 "Modeline control for left half of buffer ID." | |
674 'modeline-mousable | |
675 "button2 cycles to the previous buffer") | |
428 | 676 |
771 | 677 (define-modeline-control buffer-id-right |
678 'modeline-modified-buffer-non-highlighted-name ;; " %17b" | |
679 "Modeline control for right half of buffer ID." | |
680 nil | |
681 "button2 cycles to the next buffer") | |
428 | 682 |
683 (define-key modeline-buffer-id-left-map 'button2 'mouse-unbury-buffer) | |
684 (define-key modeline-buffer-id-right-map 'button2 'mouse-bury-buffer) | |
685 (define-key modeline-buffer-id-left-map 'button3 'modeline-buffers-menu) | |
686 (define-key modeline-buffer-id-right-map 'button3 'modeline-buffers-menu) | |
687 | |
688 (make-face 'modeline-buffer-id | |
689 "Face for the buffer ID string in the modeline.") | |
690 (set-face-parent 'modeline-buffer-id 'modeline nil '(default)) | |
691 (when (featurep 'window-system) | |
440 | 692 (set-face-foreground 'modeline-buffer-id "blue4" nil '(default color win)) |
693 (set-face-font 'modeline-buffer-id [bold-italic] nil '(default mono win)) | |
771 | 694 (set-face-font 'modeline-buffer-id [bold-italic] nil '(default grayscale |
695 win))) | |
428 | 696 (when (featurep 'tty) |
697 (set-face-font 'modeline-buffer-id [bold-italic] nil '(default tty))) | |
698 | |
771 | 699 (define-modeline-control buffer-id |
700 (list (cons modeline-buffer-id-left-extent 'modeline-buffer-id-left) | |
701 (cons modeline-buffer-id-right-extent 'modeline-buffer-id-right)) | |
428 | 702 "Modeline control for identifying the buffer being displayed. |
442 | 703 Its default value is |
704 | |
771 | 705 (list (cons modeline-buffer-id-left-extent 'modeline-buffer-id-left) |
706 (cons modeline-buffer-id-right-extent 'modeline-buffer-id-right)) | |
442 | 707 |
708 Major modes that edit things other than ordinary files may change this | |
771 | 709 (e.g. Info, Dired,...)." |
710 'modeline-buffer-id) | |
711 | |
712 (defvaralias 'modeline-buffer-identification 'modeline-buffer-id) | |
713 | |
714 (defvar modeline-modified-buffer-non-highlighted-name nil) | |
715 (make-variable-buffer-local 'modeline-modified-buffer-non-highlighted-name) | |
716 (put 'modeline-modified-buffer-non-highlighted-name 'permanent-local t) | |
717 | |
718 (defvar modeline-modified-buffer-highlighted-name nil) | |
719 (make-variable-buffer-local 'modeline-modified-buffer-highlighted-name) | |
720 (put 'modeline-modified-buffer-highlighted-name 'permanent-local t) | |
721 | |
722 (defvar modeline-recorded-buffer-name nil) | |
723 (make-variable-buffer-local 'modeline-recorded-buffer-name) | |
724 (put 'modeline-recorded-buffer-name 'permanent-local t) | |
725 | |
726 (defvar modeline-recorded-buffer-file-name nil) | |
727 (make-variable-buffer-local 'modeline-recorded-buffer-file-name) | |
728 (put 'modeline-recorded-buffer-file-name 'permanent-local t) | |
729 | |
730 (add-hook 'buffer-list-changed-hook 'modeline-update-buffer-names) | |
731 | |
732 (defvar modeline-max-buffer-name-size 30) | |
733 | |
734 (defun modeline-update-buffer-names (frame) | |
735 (mapc #'(lambda (buf) | |
736 (when (or (not (eq (buffer-name buf) | |
737 (symbol-value-in-buffer | |
738 'modeline-recorded-buffer-name buf))) | |
739 (not (eq (buffer-file-name buf) | |
740 (symbol-value-in-buffer | |
741 'modeline-recorded-buffer-file-name buf)))) | |
742 ;(dp "processing %s" buf) | |
743 (with-current-buffer buf | |
744 (setq modeline-recorded-buffer-name (buffer-name)) | |
745 (setq modeline-recorded-buffer-file-name (buffer-file-name)) | |
746 (if (not modeline-recorded-buffer-file-name) | |
747 (setq modeline-modified-buffer-non-highlighted-name | |
748 modeline-recorded-buffer-name | |
749 modeline-modified-buffer-highlighted-name nil) | |
750 (let ((fn | |
751 (if (<= (length modeline-recorded-buffer-file-name) | |
752 modeline-max-buffer-name-size) | |
753 modeline-recorded-buffer-file-name | |
754 (concat "..." | |
755 (substring | |
756 modeline-recorded-buffer-file-name | |
757 (- modeline-max-buffer-name-size)))))) | |
758 (setq modeline-modified-buffer-non-highlighted-name | |
759 ;; if the filename is very long, the entire | |
760 ;; directory will get truncated to | |
761 ;; non-existence. | |
762 (let ((dir (file-name-directory fn))) | |
763 (if dir | |
764 (concat " (" | |
765 (directory-file-name | |
766 (file-name-directory fn)) | |
767 ")") | |
768 "")) | |
769 modeline-modified-buffer-highlighted-name | |
770 (file-name-nondirectory fn)))) | |
771 (redraw-modeline)))) | |
772 (buffer-list))) | |
773 | |
774 (defcustom modeline-new-buffer-id-format t | |
775 "Whether the new format for the modeline buffer ID (with directory) is used. | |
776 This option only has an effect when set using `customize-set-variable', | |
777 or through the Options menu." | |
778 :group 'modeline | |
779 :type 'boolean | |
780 :set #'(lambda (var val) | |
781 (if val | |
782 (progn | |
783 (setq-default modeline-buffer-id-left | |
784 'modeline-modified-buffer-highlighted-name | |
785 modeline-buffer-id-right | |
786 'modeline-modified-buffer-non-highlighted-name) | |
787 (set-extent-face modeline-buffer-id-left-extent | |
788 'modeline-mousable)) | |
789 (setq-default modeline-buffer-id-left "XEmacs:" | |
790 modeline-buffer-id-right '(" %17b")) | |
791 (set-extent-face modeline-buffer-id-left-extent nil)))) | |
792 | |
793 ;; ------------------------ other modeline controls ------------------- | |
428 | 794 |
795 ;; These are for the sake of minor mode menu. #### All of this is | |
796 ;; kind of dirty. `add-minor-mode' started out as a simple substitute | |
797 ;; for (or (assq ...) ...) FSF stuff, but now is used for all kind of | |
798 ;; stuff. There should perhaps be a separate function to add toggles | |
799 ;; to the minor-mode-menu. | |
800 (add-minor-mode 'line-number-mode "") | |
801 (add-minor-mode 'column-number-mode "") | |
802 | |
771 | 803 (define-modeline-control coding-system '("%C") |
804 "Modeline control for showing current coding system.") | |
805 ;; added March 7, 2002 | |
806 (define-obsolete-variable-alias 'modeline-multibyte-status | |
807 'modeline-coding-system) | |
428 | 808 |
771 | 809 (define-modeline-control modified '("--%1*%1+-") |
810 "Modeline control for displaying whether current buffer is modified." | |
811 'modeline-mousable | |
812 "button2 toggles the buffer's read-only status") | |
428 | 813 (define-key modeline-modified-map 'button2 |
814 (make-modeline-command-wrapper 'modeline-toggle-read-only)) | |
815 | |
816 ;;; Added for XEmacs 20.3. Provide wrapper for vc since it may not always be | |
817 ;;; present, and its symbols are not visible this early in the dump if it | |
818 ;;; is. | |
819 | |
820 (defun modeline-toggle-read-only () | |
821 "Change whether this buffer is visiting its file read-only. | |
822 With arg, set read-only iff arg is positive. | |
823 This function is designed to be called when the read-only indicator on the | |
824 modeline is clicked. It will call `vc-toggle-read-only' if available, | |
825 otherwise it will call the usual `toggle-read-only'." | |
826 (interactive) | |
502 | 827 (if-fboundp 'vc-toggle-read-only |
428 | 828 (vc-toggle-read-only) |
829 (toggle-read-only))) | |
830 | |
771 | 831 (define-modeline-control line-number (list 'line-number-mode "L%l ") |
832 "Modeline control for displaying the line number of point.") | |
833 (define-modeline-control column-number (list 'column-number-mode "C%c ") | |
834 "Modeline control for displaying the column number of point.") | |
835 (define-modeline-control percentage (cons -3 "%p") | |
836 "Modeline control for displaying percentage of file above point.") | |
837 | |
838 (define-modeline-control position-status | |
839 (cons 15 (list | |
840 (cons modeline-line-number-extent | |
841 'modeline-line-number) | |
842 (cons modeline-column-number-extent | |
843 'modeline-column-number) | |
844 (cons modeline-percentage-extent | |
845 'modeline-percentage))) | |
846 "Modeline control for providing status about the location of point. | |
847 Generally includes the line number of point, its column number, and the | |
848 percentage of the file above point." | |
849 'modeline-buffer-id) | |
850 | |
851 (defconst modeline-tty-frame-specifier (make-specifier 'boolean)) | |
852 (add-hook 'create-frame-hook 'modeline-update-tty-frame-specifier) | |
853 (defun modeline-update-tty-frame-specifier (f) | |
4043 | 854 (if (and (eq (frame-type f) 'tty) |
855 (> (frame-property f 'frame-number) 1)) | |
856 (set-specifier modeline-tty-frame-specifier t f))) | |
771 | 857 |
858 (define-modeline-control tty-frame-id (list modeline-tty-frame-specifier | |
859 " [%S]" | |
860 ) | |
861 "Modeline control for showing which TTY frame is selected.") | |
862 | |
863 (define-modeline-control narrowed '("%n") | |
864 "Modeline control for displaying whether current buffer is narrowed." | |
865 'modeline-mousable | |
866 "button2 widens the buffer") | |
867 (define-key modeline-narrowed-map 'button2 | |
868 (make-modeline-command-wrapper 'widen)) | |
869 | |
870 (define-modeline-control process nil | |
871 "Modeline control for displaying info on process status. | |
872 Normally nil in most modes, since there is no process to display.") | |
873 | |
874 (setq-default | |
875 modeline-format | |
876 (list | |
877 "" | |
878 (cons modeline-coding-system-extent 'modeline-coding-system) | |
879 (cons modeline-modified-extent 'modeline-modified) | |
880 (cons modeline-position-status-extent 'modeline-position-status) | |
881 (cons modeline-tty-frame-id-extent 'modeline-tty-frame-id) | |
882 (cons modeline-buffer-id-extent 'modeline-buffer-id) | |
883 " " | |
884 'global-mode-string | |
885 " %[(" | |
886 (cons modeline-minor-mode-extent | |
887 (list "" 'mode-name 'minor-mode-alist)) | |
888 (cons modeline-narrowed-extent 'modeline-narrowed) | |
889 (cons modeline-process-extent 'modeline-process) | |
890 ")%]%-")) | |
891 | |
428 | 892 ;;; modeline.el ends here |