Mercurial > hg > xemacs-beta
annotate lisp/list-mode.el @ 5292:e4305eb6fb8c
Merge some permissions corrections to trunk.
| author | Stephen J. Turnbull <stephen@xemacs.org> |
|---|---|
| date | Mon, 18 Oct 2010 23:21:23 +0900 |
| parents | ea07b60c097f |
| children | fbafdc1bb4d2 308d34e9f07d |
| 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 | |
| 11 ;; XEmacs is free software; you can redistribute it and/or modify it | |
| 12 ;; under the terms of the GNU General Public License as published by | |
| 13 ;; the Free Software Foundation; either version 2, or (at your option) | |
| 14 ;; any later version. | |
| 15 | |
| 16 ;; XEmacs is distributed in the hope that it will be useful, but | |
| 17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 19 ;; General Public License for more details. | |
| 20 | |
| 21 ;; You should have received a copy of the GNU General Public License | |
| 22 ;; along with XEmacs; see the file COPYING. If not, write to the | |
| 23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 24 ;; Boston, MA 02111-1307, USA. | |
| 25 | |
| 26 ;;; Synched up with: Not synched | |
| 27 | |
| 28 ;;; Commentary: | |
| 29 | |
| 30 ;; This file is dumped with XEmacs. | |
| 31 | |
| 32 ;; Cleanup, merging with FSF by Ben Wing, January 1996 | |
| 33 | |
| 34 ;;; Code: | |
| 35 | |
| 36 (defvar list-mode-extent nil) | |
| 37 (make-variable-buffer-local 'list-mode-extent) | |
| 38 | |
| 39 (defvar list-mode-map nil | |
| 40 "Local map for buffers containing lists of items.") | |
| 41 (or list-mode-map | |
| 42 (let ((map (setq list-mode-map (make-sparse-keymap 'list-mode-map)))) | |
| 43 (suppress-keymap map) | |
| 44 (define-key map 'button2up 'list-mode-item-mouse-selected) | |
| 45 (define-key map 'button2 'undefined) | |
| 46 (define-key map "\C-m" 'list-mode-item-keyboard-selected) | |
| 47 ;; | |
| 48 ;; The following calls to `substitute-key-definition' losed because | |
| 49 ;; they were based on an incorrect assumption that `forward-char' and | |
| 50 ;; `backward-char' are bound to keys in the global map. This might not | |
| 51 ;; be the case if a user binds motion keys to different functions, | |
| 52 ;; and was not actually the case since 20.5 beta 28 or around. | |
| 53 ;; | |
| 54 ;; (substitute-key-definition 'forward-char 'next-list-mode-item map | |
| 55 ;; global-map) | |
| 56 ;; (substitute-key-definition 'backward-char 'previous-list-mode-item map | |
| 57 ;; global-map) | |
| 58 ;; | |
| 59 ;; We bind standard keys to motion commands instead. | |
| 60 ;; | |
| 61 (dolist (key '(kp-right right (control ?f))) | |
| 62 (define-key map key 'next-list-mode-item)) | |
| 63 (dolist (key '(kp-left left (control ?b))) | |
| 64 (define-key map key 'previous-list-mode-item)))) | |
| 65 | |
| 442 | 66 ;; #### We make list-mode-hook, as well as completion-setup-hook and |
| 67 ;; minibuffer-setup-hook, permanent-local so that it's possible to create | |
| 68 ;; buffers in these modes and then set up some buffer-specific | |
| 69 ;; customizations without resorting to awful kludges. (The problem here | |
| 70 ;; is that when you switch a buffer into a mode, reset-buffer is usually | |
| 71 ;; called, which destroys all buffer-local settings that you carefully | |
| 72 ;; tried to set up when you created the buffer. Therefore, the only way | |
| 73 ;; to set these variables is to use the setup hooks -- but if they are | |
| 74 ;; not declared permanent local, then any local hook functions that you | |
| 75 ;; put on them (which is exactly what you want to do) also get removed, | |
| 76 ;; so you would have to resort to putting a global hook function on the | |
| 77 ;; setup hook, and then making sure it gets removed later. I actually | |
| 78 ;; added some support for doing this with one-shot hooks, but this is | |
| 79 ;; clearly not the correct way to do things, and it fails in some cases, | |
| 80 ;; particularly when the buffer gets put into the mode more than once, | |
| 81 ;; which typically happens with completion buffers, for example.) In | |
| 82 ;; fact, all setup hooks should be made permanent local, but I didn't | |
| 83 ;; feel like making a global change like this quite yet. The proper way | |
| 84 ;; to do it would be to declare new def-style forms, such as defhook and | |
| 85 ;; define-local-setup-hook, which are used to initialize hooks in place | |
| 86 ;; of the current generic defvars. --ben | |
| 87 | |
| 88 (put 'list-mode-hook 'permanent-local t) | |
| 89 (defvar list-mode-hook nil | |
| 90 "Normal hook run when entering List mode.") | |
| 91 | |
| 428 | 92 (defun list-mode () |
| 93 "Major mode for buffer containing lists of items." | |
| 94 (interactive) | |
| 95 (kill-all-local-variables) | |
| 96 (use-local-map list-mode-map) | |
| 97 (setq mode-name "List") | |
| 98 (setq major-mode 'list-mode) | |
| 442 | 99 (add-local-hook 'post-command-hook 'set-list-mode-extent) |
| 100 (add-local-hook 'pre-command-hook 'list-mode-extent-pre-hook) | |
| 101 (set (make-local-variable 'next-line-add-newlines) nil) | |
| 428 | 102 (setq list-mode-extent nil) |
| 103 ;; It is visually disconcerting to have the text cursor disappear within list | |
| 104 ;; buffers, especially when moving from window to window, so leave it | |
| 105 ;; visible. -- Bob Weiner, 06/20/1999 | |
| 106 ; (set-specifier text-cursor-visible-p nil (current-buffer)) | |
| 107 (setq buffer-read-only t) | |
| 108 (goto-char (point-min)) | |
| 109 (run-hooks 'list-mode-hook)) | |
| 110 | |
| 111 ;; List mode is suitable only for specially formatted data. | |
| 112 (put 'list-mode 'mode-class 'special) | |
| 113 | |
| 114 (defvar list-mode-extent-old-point nil | |
| 115 "The value of point when pre-command-hook is called. | |
| 116 Used to determine the direction of motion.") | |
| 117 (make-variable-buffer-local 'list-mode-extent-old-point) | |
| 118 | |
| 119 (defun list-mode-extent-pre-hook () | |
| 120 (setq list-mode-extent-old-point (point)) | |
| 121 ;(setq atomic-extent-goto-char-p nil) | |
| 122 ) | |
| 123 | |
| 124 (defun set-list-mode-extent () | |
| 125 "Move to the closest list item and set up the extent for it. | |
| 126 This is called from `post-command-hook'." | |
| 127 (cond ((get-char-property (point) 'list-mode-item)) | |
| 128 ((and (> (point) (point-min)) | |
| 129 (get-char-property (1- (point)) 'list-mode-item)) | |
| 130 (goto-char (1- (point)))) | |
| 131 (t | |
| 132 (let ((pos (point)) | |
| 133 dirflag) | |
| 134 ;this fucks things up more than it helps. | |
| 135 ;atomic-extent-goto-char-p as currently defined is all broken, | |
| 136 ;since it will be triggered if the command *ever* runs goto-char! | |
| 137 ;(if atomic-extent-goto-char-p | |
| 138 ; (setq dirflag 1) | |
| 139 (if (and list-mode-extent-old-point | |
| 140 (> pos list-mode-extent-old-point)) | |
| 141 (setq dirflag 1) | |
| 142 (setq dirflag -1)) | |
| 143 (next-list-mode-item dirflag) | |
| 144 (or (get-char-property (point) 'list-mode-item) | |
| 145 (next-list-mode-item (- dirflag)))))) | |
| 146 (or (and list-mode-extent | |
| 147 (eq (current-buffer) (extent-object list-mode-extent))) | |
| 148 (progn | |
| 149 (setq list-mode-extent (make-extent nil nil (current-buffer))) | |
| 150 (set-extent-face list-mode-extent 'list-mode-item-selected))) | |
| 151 (let ((ex (extent-at (point) nil 'list-mode-item nil 'at))) | |
| 152 (if ex | |
| 153 (progn | |
| 154 (set-extent-endpoints list-mode-extent | |
| 155 (extent-start-position ex) | |
| 156 (extent-end-position ex)) | |
| 157 (auto-show-make-region-visible (extent-start-position ex) | |
| 158 (extent-end-position ex))) | |
| 159 (detach-extent list-mode-extent)))) | |
| 160 | |
| 161 (defun previous-list-mode-item (n) | |
| 162 "Move to the previous item in list-mode." | |
| 163 (interactive "p") | |
| 164 (next-list-mode-item (- n))) | |
| 165 | |
| 166 (defun next-list-mode-item (n) | |
| 167 "Move to the next item in list-mode. | |
| 168 With prefix argument N, move N items (negative N means move backward)." | |
| 169 (interactive "p") | |
| 170 (while (and (> n 0) (not (eobp))) | |
| 171 (let ((extent (extent-at (point) (current-buffer) 'list-mode-item)) | |
| 172 (end (point-max))) | |
| 173 ;; If in a completion, move to the end of it. | |
| 174 (if extent (goto-char (extent-end-position extent))) | |
| 175 ;; Move to start of next one. | |
| 176 (or (extent-at (point) (current-buffer) 'list-mode-item) | |
|
4791
ea07b60c097f
Fix issue 546, use next-single-char-property-change in list-mode.el
Aidan Kehoe <kehoea@parhasard.net>
parents:
2098
diff
changeset
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177 (goto-char (next-single-char-property-change (point) |
|
ea07b60c097f
Fix issue 546, use next-single-char-property-change in list-mode.el
Aidan Kehoe <kehoea@parhasard.net>
parents:
2098
diff
changeset
|
178 '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
|
179 nil end)))) |
| 428 | 180 (setq n (1- n))) |
| 181 (while (and (< n 0) (not (bobp))) | |
| 182 (let ((extent (extent-at (point) (current-buffer) 'list-mode-item)) | |
| 183 (end (point-min))) | |
| 184 ;; If in a completion, move to the start of it. | |
| 185 (if extent (goto-char (extent-start-position extent))) | |
| 186 ;; Move to the start of that one. | |
| 187 (if (setq extent (extent-at (point) (current-buffer) 'list-mode-item | |
| 188 nil 'before)) | |
| 189 (goto-char (extent-start-position extent)) | |
|
4791
ea07b60c097f
Fix issue 546, use next-single-char-property-change in list-mode.el
Aidan Kehoe <kehoea@parhasard.net>
parents:
2098
diff
changeset
|
190 (goto-char (previous-single-char-property-change |
| 428 | 191 (point) 'list-mode-item nil end)) |
| 192 (if (setq extent (extent-at (point) (current-buffer) 'list-mode-item | |
| 193 nil 'before)) | |
| 194 (goto-char (extent-start-position extent))))) | |
| 195 (setq n (1+ n)))) | |
| 196 | |
| 197 (defun list-mode-item-selected-1 (extent event) | |
| 198 (let ((func (extent-property extent 'list-mode-item-activate-callback)) | |
| 199 (user-data (extent-property extent 'list-mode-item-user-data))) | |
| 200 (if func | |
| 201 (funcall func event extent user-data)))) | |
| 202 | |
| 203 ;; we could make these two be just one function, but we want to be | |
| 204 ;; able to refer to them in DOC strings. | |
| 205 | |
| 206 (defun list-mode-item-keyboard-selected () | |
| 207 (interactive) | |
| 208 (list-mode-item-selected-1 (extent-at (point) (current-buffer) | |
| 209 'list-mode-item nil 'at) | |
| 210 nil)) | |
| 211 | |
| 212 (defun list-mode-item-mouse-selected (event) | |
| 213 (interactive "e") | |
| 214 ;; Sometimes event-closest-point returns nil. | |
| 215 ;; So beep instead of bombing. | |
| 216 (let ((point (event-closest-point event))) | |
| 217 (if point | |
| 218 (list-mode-item-selected-1 (extent-at point | |
| 219 (event-buffer event) | |
| 220 'list-mode-item nil 'at) | |
| 221 event) | |
| 222 (ding)))) | |
| 223 | |
| 224 (defun add-list-mode-item (start end &optional buffer activate-callback | |
| 225 user-data) | |
| 226 "Add a new list item in list-mode, from START to END in BUFFER. | |
| 227 BUFFER defaults to the current buffer. | |
| 228 This works by creating an extent for the span of text in question. | |
| 229 If ACTIVATE-CALLBACK is non-nil, it should be a function of three | |
| 230 arguments (EVENT EXTENT USER-DATA) that will be called when button2 | |
| 231 is pressed on the extent. USER-DATA comes from the optional | |
| 232 USER-DATA argument." | |
| 233 (let ((extent (make-extent start end buffer))) | |
| 234 (set-extent-property extent 'list-mode-item t) | |
| 235 (set-extent-property extent 'start-open t) | |
| 236 (if activate-callback | |
| 237 (progn | |
| 238 (set-extent-property extent 'mouse-face 'highlight) | |
| 239 (set-extent-property extent 'list-mode-item-activate-callback | |
| 240 activate-callback) | |
| 241 (set-extent-property extent 'list-mode-item-user-data user-data))) | |
| 242 extent)) | |
| 243 | |
| 244 | |
| 245 ;; Define the major mode for lists of completions. | |
| 246 | |
| 247 | |
| 248 (defvar completion-highlight-first-word-only nil | |
| 249 "*Completion will only highlight the first blank delimited word if t. | |
| 250 If the variable in not t or nil, the string is taken as a regexp to match for end | |
| 251 of highlight") | |
| 252 | |
| 442 | 253 ;; see comment at list-mode-hook. |
| 254 (put 'completion-setup-hook 'permanent-local t) | |
| 428 | 255 (defvar completion-setup-hook nil |
| 442 | 256 "Normal hook run at the end of setting up the text of a completion buffer. |
| 257 When run, the completion buffer is the current buffer.") | |
| 428 | 258 |
| 259 ; Unnecessary FSFmacs crock. We frob the extents directly in | |
| 260 ; display-completion-list, so no "heuristics" like this are necessary. | |
| 261 ;(defvar completion-fixup-function nil | |
| 262 ; "A function to customize how completions are identified in completion lists. | |
| 263 ;`completion-setup-function' calls this function with no arguments | |
| 264 ;each time it has found what it thinks is one completion. | |
| 265 ;Point is at the end of the completion in the completion list buffer. | |
| 266 ;If this function moves point, it can alter the end of that completion.") | |
| 267 | |
| 268 (defvar completion-default-help-string | |
| 269 '(concat | |
| 270 (if (device-on-window-system-p) | |
| 271 (substitute-command-keys | |
| 272 "Click \\<list-mode-map>\\[list-mode-item-mouse-selected] on a completion to select it.\n") "") | |
| 273 (substitute-command-keys | |
| 274 "Type \\<minibuffer-local-completion-map>\\[advertised-switch-to-completions] or \\[switch-to-completions] to move to this buffer, for keyboard selection.\n\n")) | |
| 275 "Form the evaluate to get a help string for completion lists. | |
| 276 This string is inserted at the beginning of the buffer. | |
| 277 See `display-completion-list'.") | |
| 278 | |
| 279 (defun display-completion-list (completions &rest cl-keys) | |
| 280 "Display the list of completions, COMPLETIONS, using `standard-output'. | |
| 281 Each element may be just a symbol or string or may be a list of two | |
| 282 strings to be printed as if concatenated. | |
| 283 Frob a mousable extent onto each completion. This extent has properties | |
| 284 'mouse-face (so it highlights when the mouse passes over it) and | |
| 285 'list-mode-item (so it can be located). | |
| 286 | |
| 287 Keywords: | |
| 288 :activate-callback (default is `default-choose-completion') | |
| 289 See `add-list-mode-item'. | |
| 290 :user-data | |
| 291 Value passed to activation callback. | |
| 292 :window-width | |
| 293 If non-nil, width to use in displaying the list, instead of the | |
| 294 actual window's width. | |
| 442 | 295 :window-height |
| 296 If non-nil, use no more than this many lines, and extend line width as | |
| 297 necessary. | |
| 428 | 298 :help-string (default is the value of `completion-default-help-string') |
| 299 Form to evaluate to get a string to insert at the beginning of | |
| 300 the completion list buffer. This is evaluated when that buffer | |
| 301 is the current buffer and after it has been put into | |
| 302 completion-list-mode. | |
| 303 :reference-buffer (default is the current buffer) | |
| 304 This specifies the value of `completion-reference-buffer' in | |
| 305 the completion buffer. This specifies the buffer (normally a | |
| 306 minibuffer) that `default-choose-completion' will insert the | |
| 307 completion into. | |
| 308 | |
| 309 At the end, run the normal hook `completion-setup-hook'. | |
| 310 It can find the completion buffer in `standard-output'. | |
| 311 If `completion-highlight-first-word-only' is non-nil, then only the start | |
| 312 of the string is highlighted." | |
| 313 ;; #### I18N3 should set standard-output to be (temporarily) | |
| 314 ;; output-translating. | |
| 315 (cl-parsing-keywords | |
| 316 ((:activate-callback 'default-choose-completion) | |
| 317 :user-data | |
| 318 :reference-buffer | |
| 319 (:help-string completion-default-help-string) | |
| 320 (:completion-string "Possible completions are:") | |
| 442 | 321 :window-width |
| 322 :window-height) | |
| 428 | 323 () |
| 324 (let ((old-buffer (current-buffer)) | |
| 325 (bufferp (bufferp standard-output))) | |
| 326 (if bufferp | |
| 327 (set-buffer standard-output)) | |
| 328 (if (null completions) | |
| 329 (princ (gettext | |
| 330 "There are no possible completions of what you have typed.")) | |
| 331 (let ((win-width | |
| 332 (or cl-window-width | |
| 333 (if bufferp | |
| 334 ;; We have to use last-nonminibuf-frame here | |
| 335 ;; and not selected-frame because if a | |
| 336 ;; minibuffer-only frame is being used it will | |
| 337 ;; be the selected-frame at the point this is | |
| 338 ;; run. We keep the selected-frame call around | |
| 339 ;; just in case. | |
| 2098 | 340 (window-width (get-lru-window (last-nonminibuf-frame))) |
| 428 | 341 80)))) |
| 342 (let ((count 0) | |
| 442 | 343 (max-width 0) |
| 344 old-max-width) | |
| 428 | 345 ;; Find longest completion |
| 346 (let ((tail completions)) | |
| 347 (while tail | |
| 348 (let* ((elt (car tail)) | |
| 349 (len (cond ((stringp elt) | |
| 350 (length elt)) | |
| 351 ((and (consp elt) | |
| 352 (stringp (car elt)) | |
| 353 (stringp (car (cdr elt)))) | |
| 354 (+ (length (car elt)) | |
| 355 (length (car (cdr elt))))) | |
| 356 (t | |
| 357 (signal 'wrong-type-argument | |
| 358 (list 'stringp elt)))))) | |
| 359 (if (> len max-width) | |
| 360 (setq max-width len)) | |
| 361 (setq count (1+ count) | |
| 362 tail (cdr tail))))) | |
| 363 | |
| 364 (setq max-width (+ 2 max-width)) ; at least two chars between cols | |
| 442 | 365 (setq old-max-width max-width) |
| 428 | 366 (let ((rows (let ((cols (min (/ win-width max-width) count))) |
| 367 (if (<= cols 1) | |
| 368 count | |
| 369 (progn | |
| 370 ;; re-space the columns | |
| 371 (setq max-width (/ win-width cols)) | |
| 372 (if (/= (% count cols) 0) ; want ceiling... | |
| 373 (1+ (/ count cols)) | |
| 374 (/ count cols))))))) | |
| 442 | 375 (when |
| 376 (and cl-window-height | |
| 377 (> rows cl-window-height)) | |
| 378 (setq max-width old-max-width) | |
| 379 (setq rows cl-window-height)) | |
| 380 (when (and (stringp cl-completion-string) | |
| 381 (> (length cl-completion-string) 0)) | |
| 382 (princ (gettext cl-completion-string)) | |
| 383 (terpri)) | |
| 428 | 384 (let ((tail completions) |
| 385 (r 0) | |
| 386 (regexp-string | |
| 387 (if (eq t | |
| 388 completion-highlight-first-word-only) | |
| 389 "[ \t]" | |
| 390 completion-highlight-first-word-only))) | |
| 391 (while (< r rows) | |
| 442 | 392 (and (> r 0) (terpri)) |
| 428 | 393 (let ((indent 0) |
| 394 (column 0) | |
| 395 (tail2 tail)) | |
| 396 (while tail2 | |
| 397 (let ((elt (car tail2))) | |
| 398 (if (/= indent 0) | |
| 399 (if bufferp | |
| 400 (indent-to indent 2) | |
| 401 (while (progn (write-char ?\ ) | |
| 402 (setq column (1+ column)) | |
| 403 (< column indent))))) | |
| 404 (setq indent (+ indent max-width)) | |
| 405 (let ((start (point)) | |
| 406 end) | |
| 407 ;; Frob some mousable extents in there too! | |
| 408 (if (consp elt) | |
| 409 (progn | |
| 410 (princ (car elt)) | |
| 411 (princ (car (cdr elt))) | |
| 412 (or bufferp | |
| 413 (setq column | |
| 414 (+ column | |
| 415 (length (car elt)) | |
| 416 (length (car (cdr elt))))))) | |
| 417 (progn | |
| 418 (princ elt) | |
| 419 (or bufferp | |
| 420 (setq column (+ column (length | |
| 421 elt)))))) | |
| 422 (add-list-mode-item | |
| 423 start | |
| 424 (progn | |
| 425 (setq end (point)) | |
| 426 (or | |
| 427 (and completion-highlight-first-word-only | |
| 428 (goto-char start) | |
| 429 (re-search-forward regexp-string end t) | |
| 430 (match-beginning 0)) | |
| 431 end)) | |
| 432 nil cl-activate-callback cl-user-data) | |
| 433 (goto-char end))) | |
| 434 (setq tail2 (nthcdr rows tail2))) | |
| 435 (setq tail (cdr tail) | |
| 436 r (1+ r))))))))) | |
| 437 (if bufferp | |
| 438 (set-buffer old-buffer))) | |
| 439 (save-excursion | |
| 440 (let ((mainbuf (or cl-reference-buffer (current-buffer)))) | |
| 441 (set-buffer standard-output) | |
| 442 (completion-list-mode) | |
| 443 (make-local-variable 'completion-reference-buffer) | |
| 444 (setq completion-reference-buffer mainbuf) | |
| 445 ;;; The value 0 is right in most cases, but not for file name completion. | |
| 446 ;;; so this has to be turned off. | |
| 447 ;;; (setq completion-base-size 0) | |
| 448 (goto-char (point-min)) | |
| 449 (let ((buffer-read-only nil)) | |
| 450 (insert (eval cl-help-string))) | |
| 451 ;; unnecessary FSFmacs crock | |
| 452 ;;(forward-line 1) | |
| 453 ;;(while (re-search-forward "[^ \t\n]+\\( [^ \t\n]+\\)*" nil t) | |
| 454 ;; (let ((beg (match-beginning 0)) | |
| 455 ;; (end (point))) | |
| 456 ;; (if completion-fixup-function | |
| 457 ;; (funcall completion-fixup-function)) | |
| 458 ;; (put-text-property beg (point) 'mouse-face 'highlight) | |
| 459 ;; (put-text-property beg (point) 'list-mode-item t) | |
| 460 ;; (goto-char end))))) | |
| 461 )) | |
| 442 | 462 (save-excursion |
| 463 (set-buffer standard-output) | |
| 464 (run-hooks 'completion-setup-hook)))) | |
| 428 | 465 |
| 466 (defvar completion-display-completion-list-function 'display-completion-list | |
| 467 "Function to set up the list of completions in the completion buffer. | |
| 468 The function is called with one argument, the sorted list of completions. | |
| 469 Particular minibuffer interface functions (e.g. `read-file-name') may | |
| 470 want to change this. To do that, set a local value for this variable | |
| 471 in the minibuffer; that ensures that other minibuffer invocations will | |
| 472 not be affected.") | |
| 473 | |
| 474 (defun minibuffer-completion-help () | |
| 475 "Display a list of possible completions of the current minibuffer contents. | |
| 476 The list of completions is determined by calling `all-completions', | |
| 477 passing it the current minibuffer contents, the value of | |
| 478 `minibuffer-completion-table', and the value of | |
| 479 `minibuffer-completion-predicate'. The list is displayed by calling | |
| 480 the value of `completion-display-completion-list-function' on the sorted | |
| 481 list of completions, with the standard output set to the completion | |
| 482 buffer." | |
| 483 (interactive) | |
| 484 (message "Making completion list...") | |
| 485 (let ((completions (all-completions (buffer-string) | |
| 486 minibuffer-completion-table | |
| 487 minibuffer-completion-predicate))) | |
| 488 (message nil) | |
| 489 (if (null completions) | |
| 490 (progn | |
| 491 (ding nil 'no-completion) | |
| 492 (temp-minibuffer-message " [No completions]")) | |
| 493 (with-output-to-temp-buffer "*Completions*" | |
| 494 (funcall completion-display-completion-list-function | |
| 495 (sort completions #'string-lessp)))))) | |
| 496 | |
| 497 (define-derived-mode completion-list-mode list-mode | |
| 498 "Completion List" | |
| 499 "Major mode for buffers showing lists of possible completions. | |
| 500 \\{completion-list-mode-map}" | |
| 501 (make-local-variable 'completion-base-size) | |
| 502 (setq completion-base-size nil)) | |
| 503 | |
| 504 (let ((map completion-list-mode-map)) | |
| 505 (define-key map 'button2up 'mouse-choose-completion) | |
| 506 (define-key map 'button2 'undefined) | |
| 507 (define-key map "\C-m" 'choose-completion) | |
| 508 (define-key map "\e\e\e" 'delete-completion-window) | |
| 509 (define-key map "\C-g" 'minibuffer-keyboard-quit) | |
| 510 (define-key map "q" 'completion-list-mode-quit) | |
| 511 (define-key map " " 'completion-switch-to-minibuffer) | |
| 512 ;; [Tab] used to switch to the minibuffer but since [space] does that and | |
| 513 ;; since most applications in the world use [Tab] to select the next item | |
| 514 ;; in a list, do that in the *Completions* buffer too. -- Bob Weiner, | |
| 515 ;; BeOpen.com, 06/23/1999. | |
| 516 (define-key map "\t" 'next-list-mode-item)) | |
| 517 | |
| 518 (defvar completion-reference-buffer nil | |
| 519 "Record the buffer that was current when the completion list was requested. | |
| 520 This is a local variable in the completion list buffer. | |
| 521 Initial value is nil to avoid some compiler warnings.") | |
| 522 | |
| 523 (defvar completion-base-size nil | |
| 524 "Number of chars at beginning of minibuffer not involved in completion. | |
| 525 This is a local variable in the completion list buffer | |
| 526 but it talks about the buffer in `completion-reference-buffer'. | |
| 527 If this is nil, it means to compare text to determine which part | |
| 528 of the tail end of the buffer's text is involved in completion.") | |
| 529 | |
| 530 ;; These names are referenced in the doc string for `completion-list-mode'. | |
| 531 (defalias 'choose-completion 'list-mode-item-keyboard-selected) | |
| 532 (defalias 'mouse-choose-completion 'list-mode-item-mouse-selected) | |
| 533 | |
| 534 (defun delete-completion-window () | |
| 535 "Delete the completion list window. | |
| 536 Go to the window from which completion was requested." | |
| 537 (interactive) | |
| 538 (let ((buf completion-reference-buffer)) | |
| 539 (delete-window (selected-window)) | |
| 540 (if (get-buffer-window buf) | |
| 541 (select-window (get-buffer-window buf))))) | |
| 542 | |
| 543 (defun completion-switch-to-minibuffer () | |
| 544 "Move from a completions buffer to the active minibuffer window." | |
| 545 (interactive) | |
| 546 (select-window (minibuffer-window))) | |
| 547 | |
| 548 (defun completion-list-mode-quit () | |
| 549 "Abort any recursive edit and bury the completions buffer." | |
| 550 (interactive) | |
| 551 (condition-case () | |
| 552 (abort-recursive-edit) | |
| 553 (error nil)) | |
| 554 ;; If there was no recursive edit to abort, simply bury the completions | |
| 555 ;; list buffer. | |
| 556 (if (eq major-mode 'completion-list-mode) (bury-buffer))) | |
| 557 | |
| 558 (defun completion-do-in-minibuffer () | |
| 559 (interactive "_") | |
| 560 (save-excursion | |
| 561 (set-buffer (window-buffer (minibuffer-window))) | |
| 562 (call-interactively (key-binding (this-command-keys))))) | |
| 563 | |
| 564 (defun default-choose-completion (event extent buffer) | |
| 565 "Click on an alternative in the `*Completions*' buffer to choose it." | |
| 566 (and (button-event-p event) | |
| 567 ;; Give temporary modes such as isearch a chance to turn off. | |
| 568 (run-hooks 'mouse-leave-buffer-hook)) | |
| 569 (or buffer (setq buffer (symbol-value-in-buffer | |
| 570 'completion-reference-buffer | |
| 571 (or (and (button-event-p event) | |
| 572 (event-buffer event)) | |
| 573 (current-buffer))))) | |
| 574 (save-selected-window | |
| 575 (and (button-event-p event) | |
| 576 (select-window (event-window event))) | |
| 577 (if (and (one-window-p t 'selected-frame) | |
| 578 (window-dedicated-p (selected-window))) | |
| 579 ;; This is a special buffer's frame | |
| 580 (iconify-frame (selected-frame)) | |
| 581 (or (window-dedicated-p (selected-window)) | |
| 582 (bury-buffer)))) | |
| 583 (choose-completion-string (extent-string extent) | |
| 584 buffer | |
| 585 completion-base-size)) | |
| 586 | |
| 587 ;; Delete the longest partial match for STRING | |
| 588 ;; that can be found before POINT. | |
| 589 (defun choose-completion-delete-max-match (string) | |
| 590 (let ((len (min (length string) | |
| 591 (- (point) (point-min))))) | |
| 592 (goto-char (- (point) (length string))) | |
| 593 (if completion-ignore-case | |
| 594 (setq string (downcase string))) | |
| 595 (while (and (> len 0) | |
| 596 (let ((tail (buffer-substring (point) | |
| 597 (+ (point) len)))) | |
| 598 (if completion-ignore-case | |
| 599 (setq tail (downcase tail))) | |
| 600 (not (string= tail (substring string 0 len))))) | |
| 601 (setq len (1- len)) | |
| 602 (forward-char 1)) | |
| 603 (delete-char len))) | |
| 604 | |
| 605 ;; Switch to BUFFER and insert the completion choice CHOICE. | |
| 606 ;; BASE-SIZE, if non-nil, says how many characters of BUFFER's text | |
| 607 ;; to keep. If it is nil, use choose-completion-delete-max-match instead. | |
| 608 (defun choose-completion-string (choice &optional buffer base-size) | |
| 609 (let ((buffer (or buffer completion-reference-buffer))) | |
| 610 ;; If BUFFER is a minibuffer, barf unless it's the currently | |
| 611 ;; active minibuffer. | |
| 612 (if (and (string-match "\\` \\*Minibuf-[0-9]+\\*\\'" (buffer-name buffer)) | |
| 613 (or (not (active-minibuffer-window)) | |
| 614 (not (equal buffer | |
| 615 (window-buffer (active-minibuffer-window)))))) | |
| 616 (error "Minibuffer is not active for completion") | |
| 617 ;; Insert the completion into the buffer where completion was requested. | |
| 618 (set-buffer buffer) | |
| 619 (if base-size | |
| 620 (delete-region (+ base-size (point-min)) (point)) | |
| 621 (choose-completion-delete-max-match choice)) | |
| 622 (insert choice) | |
| 623 (remove-text-properties (- (point) (length choice)) (point) | |
| 624 '(highlight nil)) | |
| 625 ;; Update point in the window that BUFFER is showing in. | |
| 626 (let ((window (get-buffer-window buffer t))) | |
| 627 (set-window-point window (point))) | |
| 628 ;; If completing for the minibuffer, exit it with this choice. | |
| 629 (and (equal buffer (window-buffer (minibuffer-window))) | |
| 630 minibuffer-completion-table | |
| 631 (exit-minibuffer))))) | |
| 632 | |
| 633 (define-key minibuffer-local-completion-map [prior] | |
| 634 'switch-to-completions) | |
| 635 (define-key minibuffer-local-must-match-map [prior] | |
| 636 'switch-to-completions) | |
| 637 (define-key minibuffer-local-completion-map "\M-v" | |
| 638 'advertised-switch-to-completions) | |
| 639 (define-key minibuffer-local-must-match-map "\M-v" | |
| 640 'advertised-switch-to-completions) | |
| 641 | |
| 642 (defalias 'advertised-switch-to-completions 'switch-to-completions) | |
| 643 (defun switch-to-completions () | |
| 644 "Select the completion list window." | |
| 645 (interactive) | |
| 646 ;; Make sure we have a completions window. | |
| 647 (or (get-buffer-window "*Completions*") | |
| 648 (minibuffer-completion-help)) | |
| 649 (if (not (get-buffer-window "*Completions*")) | |
| 650 nil | |
| 651 (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
|
652 (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
|
653 nil (point-max))))) |
| 428 | 654 |
| 655 ;;; list-mode.el ends here |