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c0274f38 ER |
1 | ;;; ebuff-menu.el --- electric-buffer-list mode |
2 | ||
ab422c4d PE |
3 | ;; Copyright (C) 1985-1986, 1994, 2001-2013 Free Software Foundation, |
4 | ;; Inc. | |
2076c87c | 5 | |
3a801d0c | 6 | ;; Author: Richard Mlynarik <mly@ai.mit.edu> |
54138c9d | 7 | ;; Maintainer: FSF |
3465cfd7 | 8 | ;; Keywords: convenience |
3a801d0c | 9 | |
2076c87c JB |
10 | ;; This file is part of GNU Emacs. |
11 | ||
eb3fa2cf | 12 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
2076c87c | 13 | ;; it under the terms of the GNU General Public License as published by |
eb3fa2cf GM |
14 | ;; the Free Software Foundation, either version 3 of the License, or |
15 | ;; (at your option) any later version. | |
2076c87c JB |
16 | |
17 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
18 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | ;; GNU General Public License for more details. | |
21 | ||
22 | ;; You should have received a copy of the GNU General Public License | |
eb3fa2cf | 23 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
2076c87c | 24 | |
e5167999 ER |
25 | ;;; Commentary: |
26 | ||
e41b2db1 ER |
27 | ;; Who says one can't have typeout windows in GNU Emacs? The entry |
28 | ;; point, `electric-buffer-list' works like ^r select buffer from the | |
29 | ;; ITS Emacs lunar or tmacs libraries. | |
e5167999 ER |
30 | |
31 | ;;; Code: | |
2076c87c JB |
32 | |
33 | (require 'electric) | |
34 | ||
bb0bd45a SM |
35 | (defvar electric-buffer-menu-mode-map |
36 | (let ((map (make-keymap))) | |
37 | (fillarray (car (cdr map)) 'Electric-buffer-menu-undefined) | |
38 | (define-key map "\e" nil) | |
39 | (define-key map "\C-z" 'suspend-frame) | |
40 | (define-key map "v" 'Electric-buffer-menu-mode-view-buffer) | |
41 | (define-key map (char-to-string help-char) 'Helper-help) | |
42 | (define-key map "?" 'Helper-describe-bindings) | |
43 | (define-key map "\C-c" nil) | |
44 | (define-key map "\C-c\C-c" 'Electric-buffer-menu-quit) | |
45 | (define-key map "\C-]" 'Electric-buffer-menu-quit) | |
46 | (define-key map "q" 'Electric-buffer-menu-quit) | |
47 | (define-key map " " 'Electric-buffer-menu-select) | |
48 | (define-key map "\C-m" 'Electric-buffer-menu-select) | |
49 | (define-key map "\C-l" 'recenter) | |
50 | (define-key map "s" 'Buffer-menu-save) | |
51 | (define-key map "d" 'Buffer-menu-delete) | |
52 | (define-key map "k" 'Buffer-menu-delete) | |
53 | (define-key map "\C-d" 'Buffer-menu-delete-backwards) | |
54 | ;; (define-key map "\C-k" 'Buffer-menu-delete) | |
55 | (define-key map "\177" 'Buffer-menu-backup-unmark) | |
56 | (define-key map "~" 'Buffer-menu-not-modified) | |
57 | (define-key map "u" 'Buffer-menu-unmark) | |
58 | (let ((i ?0)) | |
59 | (while (<= i ?9) | |
60 | (define-key map (char-to-string i) 'digit-argument) | |
61 | (define-key map (concat "\e" (char-to-string i)) 'digit-argument) | |
62 | (setq i (1+ i)))) | |
63 | (define-key map "-" 'negative-argument) | |
64 | (define-key map "\e-" 'negative-argument) | |
65 | (define-key map "m" 'Buffer-menu-mark) | |
66 | (define-key map "\C-u" 'universal-argument) | |
67 | (define-key map "\C-p" 'previous-line) | |
68 | (define-key map "\C-n" 'next-line) | |
69 | (define-key map "p" 'previous-line) | |
70 | (define-key map "n" 'next-line) | |
ce3cefcc CY |
71 | (define-key map "\C-v" 'scroll-up-command) |
72 | (define-key map "\ev" 'scroll-down-command) | |
bb0bd45a SM |
73 | (define-key map ">" 'scroll-right) |
74 | (define-key map "<" 'scroll-left) | |
75 | (define-key map "\e\C-v" 'scroll-other-window) | |
76 | (define-key map "\e>" 'end-of-buffer) | |
77 | (define-key map "\e<" 'beginning-of-buffer) | |
78 | (define-key map "\e\e" nil) | |
79 | (define-key map "\e\e\e" 'Electric-buffer-menu-quit) | |
80 | ;; This binding prevents the "escape => ESC" function-key-map mapping from | |
81 | ;; kicking in! | |
82 | ;; (define-key map [escape escape escape] 'Electric-buffer-menu-quit) | |
83 | (define-key map [mouse-2] 'Electric-buffer-menu-mouse-select) | |
84 | map)) | |
2076c87c | 85 | |
3cc99f68 CY |
86 | (put 'Electric-buffer-menu-quit :advertised-binding "\C-c\C-c") |
87 | (put 'Electric-buffer-menu-select :advertised-binding " ") | |
88 | (put 'Helper-help :advertised-binding (char-to-string help-char)) | |
89 | (put 'Helper-describe-bindings :advertised-binding "?") | |
90 | ||
5f20b653 | 91 | (defvar electric-buffer-menu-mode-hook nil |
0ae03b6a | 92 | "Normal hook run by `electric-buffer-menu-mode'.") |
5f20b653 | 93 | |
2076c87c JB |
94 | ;;;###autoload |
95 | (defun electric-buffer-list (arg) | |
0ae03b6a CY |
96 | "Pop up the Buffer Menu in an \"electric\" window. |
97 | If you type SPC or RET (`Electric-buffer-menu-select'), that | |
98 | selects the buffer at point and quits the \"electric\" window. | |
99 | Otherwise, you can move around in the Buffer Menu, marking | |
100 | buffers to be selected, saved or deleted; these other commands | |
101 | are much like those of `Buffer-menu-mode'. | |
2076c87c | 102 | |
5f20b653 | 103 | Run hooks in `electric-buffer-menu-mode-hook' on entry. |
2076c87c | 104 | |
0ae03b6a CY |
105 | \\<electric-buffer-menu-mode-map> |
106 | \\[keyboard-quit] or \\[Electric-buffer-menu-quit] -- exit buffer menu, returning to previous window and buffer | |
107 | configuration. If the very first character typed is a space, it | |
108 | also has this effect. | |
109 | \\[Electric-buffer-menu-select] -- select buffer of line point is on. | |
110 | Also show buffers marked with m in other windows, | |
111 | deletes buffers marked with \"D\", and saves those marked with \"S\". | |
112 | \\[Buffer-menu-mark] -- mark buffer to be displayed. | |
113 | \\[Buffer-menu-not-modified] -- clear modified-flag on that buffer. | |
114 | \\[Buffer-menu-save] -- mark that buffer to be saved. | |
115 | \\[Buffer-menu-delete] or \\[Buffer-menu-delete-backwards] -- mark that buffer to be deleted. | |
116 | \\[Buffer-menu-unmark] -- remove all kinds of marks from current line. | |
117 | \\[Electric-buffer-menu-mode-view-buffer] -- view buffer, returning when done. | |
118 | \\[Buffer-menu-backup-unmark] -- back up a line and remove marks." | |
2076c87c JB |
119 | (interactive "P") |
120 | (let (select buffer) | |
121 | (save-window-excursion | |
cf6ce50b SM |
122 | (setq buffer (list-buffers-noselect arg)) |
123 | (Electric-pop-up-window buffer) | |
2076c87c | 124 | (unwind-protect |
4f5d2ba1 | 125 | (let ((header header-line-format)) |
2076c87c | 126 | (set-buffer buffer) |
0ae03b6a | 127 | (electric-buffer-menu-mode) |
4f5d2ba1 | 128 | (setq header-line-format header) |
0ae03b6a CY |
129 | (goto-char (point-min)) |
130 | (if (search-forward "\n." nil t) | |
131 | (forward-char -1)) | |
ede8f2fe | 132 | (electric-buffer-update-highlight) |
2076c87c JB |
133 | (setq select |
134 | (catch 'electric-buffer-menu-select | |
0ae03b6a CY |
135 | (message "<<< Type SPC or RET to bury the buffer list >>>") |
136 | (setq unread-command-events (list (read-event))) | |
69adebeb KH |
137 | (let ((start-point (point)) |
138 | (first (progn (goto-char (point-min)) | |
a82c1267 JPW |
139 | (unless Buffer-menu-use-header-line |
140 | (forward-line 2)) | |
2076c87c JB |
141 | (point))) |
142 | (last (progn (goto-char (point-max)) | |
143 | (forward-line -1) | |
144 | (point))) | |
145 | (goal-column 0)) | |
69adebeb KH |
146 | ;; Use start-point if it is meaningful. |
147 | (goto-char (if (or (< start-point first) | |
148 | (> start-point last)) | |
149 | first | |
150 | start-point)) | |
2076c87c JB |
151 | (Electric-command-loop 'electric-buffer-menu-select |
152 | nil | |
153 | t | |
154 | 'electric-buffer-menu-looper | |
155 | (cons first last)))))) | |
156 | (set-buffer buffer) | |
157 | (Buffer-menu-mode) | |
ba5bf5f0 | 158 | (bury-buffer) ;Get rid of window, if dedicated. |
2076c87c | 159 | (message ""))) |
0ae03b6a CY |
160 | (when select |
161 | (set-buffer buffer) | |
162 | (let ((opoint (point-marker))) | |
163 | (Buffer-menu-execute) | |
164 | (goto-char (point-min)) | |
165 | (if (prog1 (search-forward "\n>" nil t) | |
166 | (goto-char opoint) | |
167 | (set-marker opoint nil)) | |
168 | (Buffer-menu-select) | |
169 | (switch-to-buffer (Buffer-menu-buffer t))))))) | |
2076c87c JB |
170 | |
171 | (defun electric-buffer-menu-looper (state condition) | |
172 | (cond ((and condition | |
173 | (not (memq (car condition) '(buffer-read-only | |
174 | end-of-buffer | |
175 | beginning-of-buffer)))) | |
176 | (signal (car condition) (cdr condition))) | |
177 | ((< (point) (car state)) | |
178 | (goto-char (point-min)) | |
a82c1267 JPW |
179 | (unless Buffer-menu-use-header-line |
180 | (forward-line 2))) | |
2076c87c JB |
181 | ((> (point) (cdr state)) |
182 | (goto-char (point-max)) | |
183 | (forward-line -1) | |
184 | (if (pos-visible-in-window-p (point-max)) | |
ede8f2fe RS |
185 | (recenter -1)))) |
186 | (electric-buffer-update-highlight)) | |
2076c87c | 187 | |
784f8619 RS |
188 | (defvar Helper-return-blurb) |
189 | ||
0ae03b6a CY |
190 | (define-derived-mode electric-buffer-menu-mode Buffer-menu-mode |
191 | "Electric Buffer Menu" | |
192 | "Toggle Electric Buffer Menu mode in this buffer. | |
193 | With a prefix argument ARG, enable Long Lines mode if ARG is | |
194 | positive, and disable it otherwise. If called from Lisp, enable | |
195 | the mode if ARG is omitted or nil. | |
2076c87c | 196 | |
0ae03b6a CY |
197 | Electric Buffer Menu mode is a minor mode which is automatically |
198 | enabled and disabled by the \\[electric-buffer-list] command. | |
199 | See the documentation of `electric-buffer-list' for details." | |
2076c87c | 200 | (setq mode-line-buffer-identification "Electric Buffer List") |
0ae03b6a CY |
201 | (set (make-local-variable 'Helper-return-blurb) |
202 | "return to buffer editing")) | |
203 | ||
204 | (define-obsolete-function-alias 'Electric-buffer-menu-mode | |
2a1e2476 | 205 | 'electric-buffer-menu-mode "24.3") |
2076c87c JB |
206 | |
207 | ;; generally the same as Buffer-menu-mode-map | |
208 | ;; (except we don't indirect to global-map) | |
209 | (put 'Electric-buffer-menu-undefined 'suppress-keymap t) | |
bb0bd45a | 210 | |
2076c87c JB |
211 | (defun Electric-buffer-menu-exit () |
212 | (interactive) | |
d42cc509 | 213 | (setq unread-command-events (listify-key-sequence (this-command-keys))) |
2076c87c JB |
214 | ;; for robustness |
215 | (condition-case () | |
216 | (throw 'electric-buffer-menu-select nil) | |
217 | (error (Buffer-menu-mode) | |
218 | (other-buffer)))) | |
219 | ||
220 | (defun Electric-buffer-menu-select () | |
221 | "Leave Electric Buffer Menu, selecting buffers and executing changes. | |
5f20b653 TTN |
222 | Save buffers marked \"S\". Delete buffers marked \"K\". |
223 | Select buffer at point and display buffers marked \">\" in other windows." | |
2076c87c JB |
224 | (interactive) |
225 | (throw 'electric-buffer-menu-select (point))) | |
226 | ||
3c59c255 KH |
227 | (defun Electric-buffer-menu-mouse-select (event) |
228 | (interactive "e") | |
229 | (select-window (posn-window (event-end event))) | |
230 | (set-buffer (window-buffer (selected-window))) | |
231 | (goto-char (posn-point (event-end event))) | |
232 | (throw 'electric-buffer-menu-select (point))) | |
233 | ||
2076c87c JB |
234 | (defun Electric-buffer-menu-quit () |
235 | "Leave Electric Buffer Menu, restoring previous window configuration. | |
5f20b653 | 236 | Skip execution of select, save, and delete commands." |
2076c87c JB |
237 | (interactive) |
238 | (throw 'electric-buffer-menu-select nil)) | |
239 | ||
240 | (defun Electric-buffer-menu-undefined () | |
241 | (interactive) | |
242 | (ding) | |
2bb7c30c | 243 | (message "%s" |
3cc99f68 | 244 | (substitute-command-keys "\ |
2076c87c JB |
245 | Type \\[Electric-buffer-menu-quit] to exit, \ |
246 | \\[Electric-buffer-menu-select] to select, \ | |
3cc99f68 | 247 | \\[Helper-help] for help, \\[Helper-describe-bindings] for commands.")) |
2076c87c JB |
248 | (sit-for 4)) |
249 | ||
250 | (defun Electric-buffer-menu-mode-view-buffer () | |
251 | "View buffer on current line in Electric Buffer Menu. | |
5f20b653 | 252 | Return to Electric Buffer Menu when done." |
2076c87c JB |
253 | (interactive) |
254 | (let ((bufnam (Buffer-menu-buffer nil))) | |
255 | (if bufnam | |
256 | (view-buffer bufnam) | |
257 | (ding) | |
258 | (message "Buffer %s does not exist!" bufnam) | |
259 | (sit-for 4)))) | |
260 | ||
ede8f2fe | 261 | (defvar electric-buffer-overlay nil) |
0ae03b6a | 262 | |
ede8f2fe | 263 | (defun electric-buffer-update-highlight () |
0ae03b6a | 264 | (when (derived-mode-p 'electric-buffer-menu-mode) |
080314d3 JPW |
265 | ;; Make sure we have an overlay to use. |
266 | (or electric-buffer-overlay | |
0ae03b6a CY |
267 | (set (make-local-variable 'electric-buffer-overlay) |
268 | (make-overlay (point) (point)))) | |
080314d3 | 269 | (move-overlay electric-buffer-overlay |
5ed619e0 GM |
270 | (line-beginning-position) |
271 | (line-end-position)) | |
080314d3 | 272 | (overlay-put electric-buffer-overlay 'face 'highlight))) |
ede8f2fe | 273 | |
896546cd RS |
274 | (provide 'ebuff-menu) |
275 | ||
c0274f38 | 276 | ;;; ebuff-menu.el ends here |