Mercurial > hg > xemacs-beta
annotate lisp/list-mode.el @ 5406:061f4f90f874
Convert lib-src/ to GPLv3.
| author | Mike Sperber <sperber@deinprogramm.de> |
|---|---|
| date | Mon, 18 Oct 2010 14:02:19 +0200 |
| parents | 308d34e9f07d |
| children | 89331fa1c819 |
| rev | line source |
|---|---|
| 428 | 1 ;;; list-mode.el --- Major mode for buffers containing lists of items |
| 2 | |
| 3 ;; Copyright (C) 1992-4, 1997 Free Software Foundation, Inc. | |
| 442 | 4 ;; Copyright (C) 1996, 2000 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 synched | |
| 25 | |
| 26 ;;; Commentary: | |
| 27 | |
| 28 ;; This file is dumped with XEmacs. | |
| 29 | |
| 30 ;; Cleanup, merging with FSF by Ben Wing, January 1996 | |
| 31 | |
| 32 ;;; Code: | |
| 33 | |
| 34 (defvar list-mode-extent nil) | |
| 35 (make-variable-buffer-local 'list-mode-extent) | |
| 36 | |
| 37 (defvar list-mode-map nil | |
| 38 "Local map for buffers containing lists of items.") | |
| 39 (or list-mode-map | |
| 40 (let ((map (setq list-mode-map (make-sparse-keymap 'list-mode-map)))) | |
| 41 (suppress-keymap map) | |
| 42 (define-key map 'button2up 'list-mode-item-mouse-selected) | |
| 43 (define-key map 'button2 'undefined) | |
| 44 (define-key map "\C-m" 'list-mode-item-keyboard-selected) | |
| 45 ;; | |
| 46 ;; The following calls to `substitute-key-definition' losed because | |
| 47 ;; they were based on an incorrect assumption that `forward-char' and | |
| 48 ;; `backward-char' are bound to keys in the global map. This might not | |
| 49 ;; be the case if a user binds motion keys to different functions, | |
| 50 ;; and was not actually the case since 20.5 beta 28 or around. | |
| 51 ;; | |
| 52 ;; (substitute-key-definition 'forward-char 'next-list-mode-item map | |
| 53 ;; global-map) | |
| 54 ;; (substitute-key-definition 'backward-char 'previous-list-mode-item map | |
| 55 ;; global-map) | |
| 56 ;; | |
| 57 ;; We bind standard keys to motion commands instead. | |
| 58 ;; | |
| 59 (dolist (key '(kp-right right (control ?f))) | |
| 60 (define-key map key 'next-list-mode-item)) | |
| 61 (dolist (key '(kp-left left (control ?b))) | |
| 62 (define-key map key 'previous-list-mode-item)))) | |
| 63 | |
| 442 | 64 ;; #### We make list-mode-hook, as well as completion-setup-hook and |
| 65 ;; minibuffer-setup-hook, permanent-local so that it's possible to create | |
| 66 ;; buffers in these modes and then set up some buffer-specific | |
| 67 ;; customizations without resorting to awful kludges. (The problem here | |
| 68 ;; is that when you switch a buffer into a mode, reset-buffer is usually | |
| 69 ;; called, which destroys all buffer-local settings that you carefully | |
| 70 ;; tried to set up when you created the buffer. Therefore, the only way | |
| 71 ;; to set these variables is to use the setup hooks -- but if they are | |
| 72 ;; not declared permanent local, then any local hook functions that you | |
| 73 ;; put on them (which is exactly what you want to do) also get removed, | |
| 74 ;; so you would have to resort to putting a global hook function on the | |
| 75 ;; setup hook, and then making sure it gets removed later. I actually | |
| 76 ;; added some support for doing this with one-shot hooks, but this is | |
| 77 ;; clearly not the correct way to do things, and it fails in some cases, | |
| 78 ;; particularly when the buffer gets put into the mode more than once, | |
| 79 ;; which typically happens with completion buffers, for example.) In | |
| 80 ;; fact, all setup hooks should be made permanent local, but I didn't | |
| 81 ;; feel like making a global change like this quite yet. The proper way | |
| 82 ;; to do it would be to declare new def-style forms, such as defhook and | |
| 83 ;; define-local-setup-hook, which are used to initialize hooks in place | |
| 84 ;; of the current generic defvars. --ben | |
| 85 | |
| 86 (put 'list-mode-hook 'permanent-local t) | |
| 87 (defvar list-mode-hook nil | |
| 88 "Normal hook run when entering List mode.") | |
| 89 | |
| 428 | 90 (defun list-mode () |
| 91 "Major mode for buffer containing lists of items." | |
| 92 (interactive) | |
| 93 (kill-all-local-variables) | |
| 94 (use-local-map list-mode-map) | |
| 95 (setq mode-name "List") | |
| 96 (setq major-mode 'list-mode) | |
| 442 | 97 (add-local-hook 'post-command-hook 'set-list-mode-extent) |
| 98 (add-local-hook 'pre-command-hook 'list-mode-extent-pre-hook) | |
| 99 (set (make-local-variable 'next-line-add-newlines) nil) | |
| 428 | 100 (setq list-mode-extent nil) |
| 101 ;; It is visually disconcerting to have the text cursor disappear within list | |
| 102 ;; buffers, especially when moving from window to window, so leave it | |
| 103 ;; visible. -- Bob Weiner, 06/20/1999 | |
| 104 ; (set-specifier text-cursor-visible-p nil (current-buffer)) | |
| 105 (setq buffer-read-only t) | |
| 106 (goto-char (point-min)) | |
| 107 (run-hooks 'list-mode-hook)) | |
| 108 | |
| 109 ;; List mode is suitable only for specially formatted data. | |
| 110 (put 'list-mode 'mode-class 'special) | |
| 111 | |
| 112 (defvar list-mode-extent-old-point nil | |
| 113 "The value of point when pre-command-hook is called. | |
| 114 Used to determine the direction of motion.") | |
| 115 (make-variable-buffer-local 'list-mode-extent-old-point) | |
| 116 | |
| 117 (defun list-mode-extent-pre-hook () | |
| 118 (setq list-mode-extent-old-point (point)) | |
| 119 ;(setq atomic-extent-goto-char-p nil) | |
| 120 ) | |
| 121 | |
| 122 (defun set-list-mode-extent () | |
| 123 "Move to the closest list item and set up the extent for it. | |
| 124 This is called from `post-command-hook'." | |
| 125 (cond ((get-char-property (point) 'list-mode-item)) | |
| 126 ((and (> (point) (point-min)) | |
| 127 (get-char-property (1- (point)) 'list-mode-item)) | |
| 128 (goto-char (1- (point)))) | |
| 129 (t | |
| 130 (let ((pos (point)) | |
| 131 dirflag) | |
| 132 ;this fucks things up more than it helps. | |
| 133 ;atomic-extent-goto-char-p as currently defined is all broken, | |
| 134 ;since it will be triggered if the command *ever* runs goto-char! | |
| 135 ;(if atomic-extent-goto-char-p | |
| 136 ; (setq dirflag 1) | |
| 137 (if (and list-mode-extent-old-point | |
| 138 (> pos list-mode-extent-old-point)) | |
| 139 (setq dirflag 1) | |
| 140 (setq dirflag -1)) | |
| 141 (next-list-mode-item dirflag) | |
| 142 (or (get-char-property (point) 'list-mode-item) | |
| 143 (next-list-mode-item (- dirflag)))))) | |
| 144 (or (and list-mode-extent | |
| 145 (eq (current-buffer) (extent-object list-mode-extent))) | |
| 146 (progn | |
| 147 (setq list-mode-extent (make-extent nil nil (current-buffer))) | |
| 148 (set-extent-face list-mode-extent 'list-mode-item-selected))) | |
| 149 (let ((ex (extent-at (point) nil 'list-mode-item nil 'at))) | |
| 150 (if ex | |
| 151 (progn | |
| 152 (set-extent-endpoints list-mode-extent | |
| 153 (extent-start-position ex) | |
| 154 (extent-end-position ex)) | |
| 155 (auto-show-make-region-visible (extent-start-position ex) | |
| 156 (extent-end-position ex))) | |
| 157 (detach-extent list-mode-extent)))) | |
| 158 | |
| 159 (defun previous-list-mode-item (n) | |
| 160 "Move to the previous item in list-mode." | |
| 161 (interactive "p") | |
| 162 (next-list-mode-item (- n))) | |
| 163 | |
| 164 (defun next-list-mode-item (n) | |
| 165 "Move to the next item in list-mode. | |
| 166 With prefix argument N, move N items (negative N means move backward)." | |
| 167 (interactive "p") | |
| 168 (while (and (> n 0) (not (eobp))) | |
| 169 (let ((extent (extent-at (point) (current-buffer) 'list-mode-item)) | |
| 170 (end (point-max))) | |
| 171 ;; If in a completion, move to the end of it. | |
| 172 (if extent (goto-char (extent-end-position extent))) | |
| 173 ;; Move to start of next one. | |
| 174 (or (extent-at (point) (current-buffer) 'list-mode-item) | |
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175 (goto-char (next-single-char-property-change (point) |
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176 'list-mode-item |
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177 nil end)))) |
| 428 | 178 (setq n (1- n))) |
| 179 (while (and (< n 0) (not (bobp))) | |
| 180 (let ((extent (extent-at (point) (current-buffer) 'list-mode-item)) | |
| 181 (end (point-min))) | |
| 182 ;; If in a completion, move to the start of it. | |
| 183 (if extent (goto-char (extent-start-position extent))) | |
| 184 ;; Move to the start of that one. | |
| 185 (if (setq extent (extent-at (point) (current-buffer) 'list-mode-item | |
| 186 nil 'before)) | |
| 187 (goto-char (extent-start-position extent)) | |
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188 (goto-char (previous-single-char-property-change |
| 428 | 189 (point) 'list-mode-item nil end)) |
| 190 (if (setq extent (extent-at (point) (current-buffer) 'list-mode-item | |
| 191 nil 'before)) | |
| 192 (goto-char (extent-start-position extent))))) | |
| 193 (setq n (1+ n)))) | |
| 194 | |
| 195 (defun list-mode-item-selected-1 (extent event) | |
| 196 (let ((func (extent-property extent 'list-mode-item-activate-callback)) | |
| 197 (user-data (extent-property extent 'list-mode-item-user-data))) | |
| 198 (if func | |
| 199 (funcall func event extent user-data)))) | |
| 200 | |
| 201 ;; we could make these two be just one function, but we want to be | |
| 202 ;; able to refer to them in DOC strings. | |
| 203 | |
| 204 (defun list-mode-item-keyboard-selected () | |
| 205 (interactive) | |
| 206 (list-mode-item-selected-1 (extent-at (point) (current-buffer) | |
| 207 'list-mode-item nil 'at) | |
| 208 nil)) | |
| 209 | |
| 210 (defun list-mode-item-mouse-selected (event) | |
| 211 (interactive "e") | |
| 212 ;; Sometimes event-closest-point returns nil. | |
| 213 ;; So beep instead of bombing. | |
| 214 (let ((point (event-closest-point event))) | |
| 215 (if point | |
| 216 (list-mode-item-selected-1 (extent-at point | |
| 217 (event-buffer event) | |
| 218 'list-mode-item nil 'at) | |
| 219 event) | |
| 220 (ding)))) | |
| 221 | |
| 222 (defun add-list-mode-item (start end &optional buffer activate-callback | |
| 223 user-data) | |
| 224 "Add a new list item in list-mode, from START to END in BUFFER. | |
| 225 BUFFER defaults to the current buffer. | |
| 226 This works by creating an extent for the span of text in question. | |
| 227 If ACTIVATE-CALLBACK is non-nil, it should be a function of three | |
| 228 arguments (EVENT EXTENT USER-DATA) that will be called when button2 | |
| 229 is pressed on the extent. USER-DATA comes from the optional | |
| 230 USER-DATA argument." | |
| 231 (let ((extent (make-extent start end buffer))) | |
| 232 (set-extent-property extent 'list-mode-item t) | |
| 233 (set-extent-property extent 'start-open t) | |
| 234 (if activate-callback | |
| 235 (progn | |
| 236 (set-extent-property extent 'mouse-face 'highlight) | |
| 237 (set-extent-property extent 'list-mode-item-activate-callback | |
| 238 activate-callback) | |
| 239 (set-extent-property extent 'list-mode-item-user-data user-data))) | |
| 240 extent)) | |
| 241 | |
| 242 | |
| 243 ;; Define the major mode for lists of completions. | |
| 244 | |
| 245 | |
| 246 (defvar completion-highlight-first-word-only nil | |
| 247 "*Completion will only highlight the first blank delimited word if t. | |
| 248 If the variable in not t or nil, the string is taken as a regexp to match for end | |
| 249 of highlight") | |
| 250 | |
| 442 | 251 ;; see comment at list-mode-hook. |
| 252 (put 'completion-setup-hook 'permanent-local t) | |
| 428 | 253 (defvar completion-setup-hook nil |
| 442 | 254 "Normal hook run at the end of setting up the text of a completion buffer. |
| 255 When run, the completion buffer is the current buffer.") | |
| 428 | 256 |
| 257 ; Unnecessary FSFmacs crock. We frob the extents directly in | |
| 258 ; display-completion-list, so no "heuristics" like this are necessary. | |
| 259 ;(defvar completion-fixup-function nil | |
| 260 ; "A function to customize how completions are identified in completion lists. | |
| 261 ;`completion-setup-function' calls this function with no arguments | |
| 262 ;each time it has found what it thinks is one completion. | |
| 263 ;Point is at the end of the completion in the completion list buffer. | |
| 264 ;If this function moves point, it can alter the end of that completion.") | |
| 265 | |
| 266 (defvar completion-default-help-string | |
| 267 '(concat | |
| 268 (if (device-on-window-system-p) | |
| 269 (substitute-command-keys | |
| 270 "Click \\<list-mode-map>\\[list-mode-item-mouse-selected] on a completion to select it.\n") "") | |
| 271 (substitute-command-keys | |
| 272 "Type \\<minibuffer-local-completion-map>\\[advertised-switch-to-completions] or \\[switch-to-completions] to move to this buffer, for keyboard selection.\n\n")) | |
| 273 "Form the evaluate to get a help string for completion lists. | |
| 274 This string is inserted at the beginning of the buffer. | |
| 275 See `display-completion-list'.") | |
| 276 | |
| 277 (defun display-completion-list (completions &rest cl-keys) | |
| 278 "Display the list of completions, COMPLETIONS, using `standard-output'. | |
| 279 Each element may be just a symbol or string or may be a list of two | |
| 280 strings to be printed as if concatenated. | |
| 281 Frob a mousable extent onto each completion. This extent has properties | |
| 282 'mouse-face (so it highlights when the mouse passes over it) and | |
| 283 'list-mode-item (so it can be located). | |
| 284 | |
| 285 Keywords: | |
| 286 :activate-callback (default is `default-choose-completion') | |
| 287 See `add-list-mode-item'. | |
| 288 :user-data | |
| 289 Value passed to activation callback. | |
| 290 :window-width | |
| 291 If non-nil, width to use in displaying the list, instead of the | |
| 292 actual window's width. | |
| 442 | 293 :window-height |
| 294 If non-nil, use no more than this many lines, and extend line width as | |
| 295 necessary. | |
| 428 | 296 :help-string (default is the value of `completion-default-help-string') |
| 297 Form to evaluate to get a string to insert at the beginning of | |
| 298 the completion list buffer. This is evaluated when that buffer | |
| 299 is the current buffer and after it has been put into | |
| 300 completion-list-mode. | |
| 301 :reference-buffer (default is the current buffer) | |
| 302 This specifies the value of `completion-reference-buffer' in | |
| 303 the completion buffer. This specifies the buffer (normally a | |
| 304 minibuffer) that `default-choose-completion' will insert the | |
| 305 completion into. | |
| 306 | |
| 307 At the end, run the normal hook `completion-setup-hook'. | |
| 308 It can find the completion buffer in `standard-output'. | |
| 309 If `completion-highlight-first-word-only' is non-nil, then only the start | |
| 310 of the string is highlighted." | |
| 311 ;; #### I18N3 should set standard-output to be (temporarily) | |
| 312 ;; output-translating. | |
| 313 (cl-parsing-keywords | |
| 314 ((:activate-callback 'default-choose-completion) | |
| 315 :user-data | |
| 316 :reference-buffer | |
| 317 (:help-string completion-default-help-string) | |
| 318 (:completion-string "Possible completions are:") | |
| 442 | 319 :window-width |
| 320 :window-height) | |
| 428 | 321 () |
| 322 (let ((old-buffer (current-buffer)) | |
| 323 (bufferp (bufferp standard-output))) | |
| 324 (if bufferp | |
| 325 (set-buffer standard-output)) | |
| 326 (if (null completions) | |
| 327 (princ (gettext | |
| 328 "There are no possible completions of what you have typed.")) | |
| 329 (let ((win-width | |
| 330 (or cl-window-width | |
| 331 (if bufferp | |
| 332 ;; We have to use last-nonminibuf-frame here | |
| 333 ;; and not selected-frame because if a | |
| 334 ;; minibuffer-only frame is being used it will | |
| 335 ;; be the selected-frame at the point this is | |
| 336 ;; run. We keep the selected-frame call around | |
| 337 ;; just in case. | |
| 2098 | 338 (window-width (get-lru-window (last-nonminibuf-frame))) |
| 428 | 339 80)))) |
| 340 (let ((count 0) | |
| 442 | 341 (max-width 0) |
| 342 old-max-width) | |
| 428 | 343 ;; Find longest completion |
| 344 (let ((tail completions)) | |
| 345 (while tail | |
| 346 (let* ((elt (car tail)) | |
| 347 (len (cond ((stringp elt) | |
| 348 (length elt)) | |
| 349 ((and (consp elt) | |
| 350 (stringp (car elt)) | |
| 351 (stringp (car (cdr elt)))) | |
| 352 (+ (length (car elt)) | |
| 353 (length (car (cdr elt))))) | |
| 354 (t | |
| 355 (signal 'wrong-type-argument | |
| 356 (list 'stringp elt)))))) | |
| 357 (if (> len max-width) | |
| 358 (setq max-width len)) | |
| 359 (setq count (1+ count) | |
| 360 tail (cdr tail))))) | |
| 361 | |
| 362 (setq max-width (+ 2 max-width)) ; at least two chars between cols | |
| 442 | 363 (setq old-max-width max-width) |
| 428 | 364 (let ((rows (let ((cols (min (/ win-width max-width) count))) |
| 365 (if (<= cols 1) | |
| 366 count | |
| 367 (progn | |
| 368 ;; re-space the columns | |
| 369 (setq max-width (/ win-width cols)) | |
| 370 (if (/= (% count cols) 0) ; want ceiling... | |
| 371 (1+ (/ count cols)) | |
| 372 (/ count cols))))))) | |
| 442 | 373 (when |
| 374 (and cl-window-height | |
| 375 (> rows cl-window-height)) | |
| 376 (setq max-width old-max-width) | |
| 377 (setq rows cl-window-height)) | |
| 378 (when (and (stringp cl-completion-string) | |
| 379 (> (length cl-completion-string) 0)) | |
| 380 (princ (gettext cl-completion-string)) | |
| 381 (terpri)) | |
| 428 | 382 (let ((tail completions) |
| 383 (r 0) | |
| 384 (regexp-string | |
| 385 (if (eq t | |
| 386 completion-highlight-first-word-only) | |
| 387 "[ \t]" | |
| 388 completion-highlight-first-word-only))) | |
| 389 (while (< r rows) | |
| 442 | 390 (and (> r 0) (terpri)) |
| 428 | 391 (let ((indent 0) |
| 392 (column 0) | |
| 393 (tail2 tail)) | |
| 394 (while tail2 | |
| 395 (let ((elt (car tail2))) | |
| 396 (if (/= indent 0) | |
| 397 (if bufferp | |
| 398 (indent-to indent 2) | |
| 399 (while (progn (write-char ?\ ) | |
| 400 (setq column (1+ column)) | |
| 401 (< column indent))))) | |
| 402 (setq indent (+ indent max-width)) | |
| 403 (let ((start (point)) | |
| 404 end) | |
| 405 ;; Frob some mousable extents in there too! | |
| 406 (if (consp elt) | |
| 407 (progn | |
| 408 (princ (car elt)) | |
| 409 (princ (car (cdr elt))) | |
| 410 (or bufferp | |
| 411 (setq column | |
| 412 (+ column | |
| 413 (length (car elt)) | |
| 414 (length (car (cdr elt))))))) | |
| 415 (progn | |
| 416 (princ elt) | |
| 417 (or bufferp | |
| 418 (setq column (+ column (length | |
| 419 elt)))))) | |
| 420 (add-list-mode-item | |
| 421 start | |
| 422 (progn | |
| 423 (setq end (point)) | |
| 424 (or | |
| 425 (and completion-highlight-first-word-only | |
| 426 (goto-char start) | |
| 427 (re-search-forward regexp-string end t) | |
| 428 (match-beginning 0)) | |
| 429 end)) | |
| 430 nil cl-activate-callback cl-user-data) | |
| 431 (goto-char end))) | |
| 432 (setq tail2 (nthcdr rows tail2))) | |
| 433 (setq tail (cdr tail) | |
| 434 r (1+ r))))))))) | |
| 435 (if bufferp | |
| 436 (set-buffer old-buffer))) | |
| 437 (save-excursion | |
| 438 (let ((mainbuf (or cl-reference-buffer (current-buffer)))) | |
| 439 (set-buffer standard-output) | |
| 440 (completion-list-mode) | |
| 441 (make-local-variable 'completion-reference-buffer) | |
| 442 (setq completion-reference-buffer mainbuf) | |
| 443 ;;; The value 0 is right in most cases, but not for file name completion. | |
| 444 ;;; so this has to be turned off. | |
| 445 ;;; (setq completion-base-size 0) | |
| 446 (goto-char (point-min)) | |
| 447 (let ((buffer-read-only nil)) | |
| 448 (insert (eval cl-help-string))) | |
| 449 ;; unnecessary FSFmacs crock | |
| 450 ;;(forward-line 1) | |
| 451 ;;(while (re-search-forward "[^ \t\n]+\\( [^ \t\n]+\\)*" nil t) | |
| 452 ;; (let ((beg (match-beginning 0)) | |
| 453 ;; (end (point))) | |
| 454 ;; (if completion-fixup-function | |
| 455 ;; (funcall completion-fixup-function)) | |
| 456 ;; (put-text-property beg (point) 'mouse-face 'highlight) | |
| 457 ;; (put-text-property beg (point) 'list-mode-item t) | |
| 458 ;; (goto-char end))))) | |
| 459 )) | |
| 442 | 460 (save-excursion |
| 461 (set-buffer standard-output) | |
| 462 (run-hooks 'completion-setup-hook)))) | |
| 428 | 463 |
| 464 (defvar completion-display-completion-list-function 'display-completion-list | |
| 465 "Function to set up the list of completions in the completion buffer. | |
| 466 The function is called with one argument, the sorted list of completions. | |
| 467 Particular minibuffer interface functions (e.g. `read-file-name') may | |
| 468 want to change this. To do that, set a local value for this variable | |
| 469 in the minibuffer; that ensures that other minibuffer invocations will | |
| 470 not be affected.") | |
| 471 | |
| 472 (defun minibuffer-completion-help () | |
| 473 "Display a list of possible completions of the current minibuffer contents. | |
| 474 The list of completions is determined by calling `all-completions', | |
| 475 passing it the current minibuffer contents, the value of | |
| 476 `minibuffer-completion-table', and the value of | |
| 477 `minibuffer-completion-predicate'. The list is displayed by calling | |
| 478 the value of `completion-display-completion-list-function' on the sorted | |
| 479 list of completions, with the standard output set to the completion | |
| 480 buffer." | |
| 481 (interactive) | |
| 482 (message "Making completion list...") | |
| 483 (let ((completions (all-completions (buffer-string) | |
| 484 minibuffer-completion-table | |
| 485 minibuffer-completion-predicate))) | |
| 486 (message nil) | |
| 487 (if (null completions) | |
| 488 (progn | |
| 489 (ding nil 'no-completion) | |
| 490 (temp-minibuffer-message " [No completions]")) | |
| 491 (with-output-to-temp-buffer "*Completions*" | |
| 492 (funcall completion-display-completion-list-function | |
| 493 (sort completions #'string-lessp)))))) | |
| 494 | |
| 495 (define-derived-mode completion-list-mode list-mode | |
| 496 "Completion List" | |
| 497 "Major mode for buffers showing lists of possible completions. | |
| 498 \\{completion-list-mode-map}" | |
| 499 (make-local-variable 'completion-base-size) | |
| 500 (setq completion-base-size nil)) | |
| 501 | |
| 502 (let ((map completion-list-mode-map)) | |
| 503 (define-key map 'button2up 'mouse-choose-completion) | |
| 504 (define-key map 'button2 'undefined) | |
| 505 (define-key map "\C-m" 'choose-completion) | |
| 506 (define-key map "\e\e\e" 'delete-completion-window) | |
| 507 (define-key map "\C-g" 'minibuffer-keyboard-quit) | |
| 508 (define-key map "q" 'completion-list-mode-quit) | |
| 509 (define-key map " " 'completion-switch-to-minibuffer) | |
| 510 ;; [Tab] used to switch to the minibuffer but since [space] does that and | |
| 511 ;; since most applications in the world use [Tab] to select the next item | |
| 512 ;; in a list, do that in the *Completions* buffer too. -- Bob Weiner, | |
| 513 ;; BeOpen.com, 06/23/1999. | |
| 514 (define-key map "\t" 'next-list-mode-item)) | |
| 515 | |
| 516 (defvar completion-reference-buffer nil | |
| 517 "Record the buffer that was current when the completion list was requested. | |
| 518 This is a local variable in the completion list buffer. | |
| 519 Initial value is nil to avoid some compiler warnings.") | |
| 520 | |
| 521 (defvar completion-base-size nil | |
| 522 "Number of chars at beginning of minibuffer not involved in completion. | |
| 523 This is a local variable in the completion list buffer | |
| 524 but it talks about the buffer in `completion-reference-buffer'. | |
| 525 If this is nil, it means to compare text to determine which part | |
| 526 of the tail end of the buffer's text is involved in completion.") | |
| 527 | |
| 528 ;; These names are referenced in the doc string for `completion-list-mode'. | |
| 529 (defalias 'choose-completion 'list-mode-item-keyboard-selected) | |
| 530 (defalias 'mouse-choose-completion 'list-mode-item-mouse-selected) | |
| 531 | |
| 532 (defun delete-completion-window () | |
| 533 "Delete the completion list window. | |
| 534 Go to the window from which completion was requested." | |
| 535 (interactive) | |
| 536 (let ((buf completion-reference-buffer)) | |
| 537 (delete-window (selected-window)) | |
| 538 (if (get-buffer-window buf) | |
| 539 (select-window (get-buffer-window buf))))) | |
| 540 | |
| 541 (defun completion-switch-to-minibuffer () | |
| 542 "Move from a completions buffer to the active minibuffer window." | |
| 543 (interactive) | |
| 544 (select-window (minibuffer-window))) | |
| 545 | |
| 546 (defun completion-list-mode-quit () | |
| 547 "Abort any recursive edit and bury the completions buffer." | |
| 548 (interactive) | |
| 549 (condition-case () | |
| 550 (abort-recursive-edit) | |
| 551 (error nil)) | |
| 552 ;; If there was no recursive edit to abort, simply bury the completions | |
| 553 ;; list buffer. | |
| 554 (if (eq major-mode 'completion-list-mode) (bury-buffer))) | |
| 555 | |
| 556 (defun completion-do-in-minibuffer () | |
| 557 (interactive "_") | |
| 558 (save-excursion | |
| 559 (set-buffer (window-buffer (minibuffer-window))) | |
| 560 (call-interactively (key-binding (this-command-keys))))) | |
| 561 | |
| 562 (defun default-choose-completion (event extent buffer) | |
| 563 "Click on an alternative in the `*Completions*' buffer to choose it." | |
| 564 (and (button-event-p event) | |
| 565 ;; Give temporary modes such as isearch a chance to turn off. | |
| 566 (run-hooks 'mouse-leave-buffer-hook)) | |
| 567 (or buffer (setq buffer (symbol-value-in-buffer | |
| 568 'completion-reference-buffer | |
| 569 (or (and (button-event-p event) | |
| 570 (event-buffer event)) | |
| 571 (current-buffer))))) | |
| 572 (save-selected-window | |
| 573 (and (button-event-p event) | |
| 574 (select-window (event-window event))) | |
| 575 (if (and (one-window-p t 'selected-frame) | |
| 576 (window-dedicated-p (selected-window))) | |
| 577 ;; This is a special buffer's frame | |
| 578 (iconify-frame (selected-frame)) | |
| 579 (or (window-dedicated-p (selected-window)) | |
| 580 (bury-buffer)))) | |
| 581 (choose-completion-string (extent-string extent) | |
| 582 buffer | |
| 583 completion-base-size)) | |
| 584 | |
| 585 ;; Delete the longest partial match for STRING | |
| 586 ;; that can be found before POINT. | |
| 587 (defun choose-completion-delete-max-match (string) | |
| 588 (let ((len (min (length string) | |
| 589 (- (point) (point-min))))) | |
| 590 (goto-char (- (point) (length string))) | |
| 591 (if completion-ignore-case | |
| 592 (setq string (downcase string))) | |
| 593 (while (and (> len 0) | |
| 594 (let ((tail (buffer-substring (point) | |
| 595 (+ (point) len)))) | |
| 596 (if completion-ignore-case | |
| 597 (setq tail (downcase tail))) | |
| 598 (not (string= tail (substring string 0 len))))) | |
| 599 (setq len (1- len)) | |
| 600 (forward-char 1)) | |
| 601 (delete-char len))) | |
| 602 | |
| 603 ;; Switch to BUFFER and insert the completion choice CHOICE. | |
| 604 ;; BASE-SIZE, if non-nil, says how many characters of BUFFER's text | |
| 605 ;; to keep. If it is nil, use choose-completion-delete-max-match instead. | |
| 606 (defun choose-completion-string (choice &optional buffer base-size) | |
| 607 (let ((buffer (or buffer completion-reference-buffer))) | |
| 608 ;; If BUFFER is a minibuffer, barf unless it's the currently | |
| 609 ;; active minibuffer. | |
| 610 (if (and (string-match "\\` \\*Minibuf-[0-9]+\\*\\'" (buffer-name buffer)) | |
| 611 (or (not (active-minibuffer-window)) | |
| 612 (not (equal buffer | |
| 613 (window-buffer (active-minibuffer-window)))))) | |
| 614 (error "Minibuffer is not active for completion") | |
| 615 ;; Insert the completion into the buffer where completion was requested. | |
| 616 (set-buffer buffer) | |
| 617 (if base-size | |
| 618 (delete-region (+ base-size (point-min)) (point)) | |
| 619 (choose-completion-delete-max-match choice)) | |
| 620 (insert choice) | |
| 621 (remove-text-properties (- (point) (length choice)) (point) | |
| 622 '(highlight nil)) | |
| 623 ;; Update point in the window that BUFFER is showing in. | |
| 624 (let ((window (get-buffer-window buffer t))) | |
| 625 (set-window-point window (point))) | |
| 626 ;; If completing for the minibuffer, exit it with this choice. | |
| 627 (and (equal buffer (window-buffer (minibuffer-window))) | |
| 628 minibuffer-completion-table | |
| 629 (exit-minibuffer))))) | |
| 630 | |
| 631 (define-key minibuffer-local-completion-map [prior] | |
| 632 'switch-to-completions) | |
| 633 (define-key minibuffer-local-must-match-map [prior] | |
| 634 'switch-to-completions) | |
| 635 (define-key minibuffer-local-completion-map "\M-v" | |
| 636 'advertised-switch-to-completions) | |
| 637 (define-key minibuffer-local-must-match-map "\M-v" | |
| 638 'advertised-switch-to-completions) | |
| 639 | |
| 640 (defalias 'advertised-switch-to-completions 'switch-to-completions) | |
| 641 (defun switch-to-completions () | |
| 642 "Select the completion list window." | |
| 643 (interactive) | |
| 644 ;; Make sure we have a completions window. | |
| 645 (or (get-buffer-window "*Completions*") | |
| 646 (minibuffer-completion-help)) | |
| 647 (if (not (get-buffer-window "*Completions*")) | |
| 648 nil | |
| 649 (select-window (get-buffer-window "*Completions*")) | |
|
4791
ea07b60c097f
Fix issue 546, use next-single-char-property-change in list-mode.el
Aidan Kehoe <kehoea@parhasard.net>
parents:
2098
diff
changeset
|
650 (goto-char (next-single-char-property-change (point-min) 'list-mode-item |
|
ea07b60c097f
Fix issue 546, use next-single-char-property-change in list-mode.el
Aidan Kehoe <kehoea@parhasard.net>
parents:
2098
diff
changeset
|
651 nil (point-max))))) |
| 428 | 652 |
| 653 ;;; list-mode.el ends here |