diff options
| author | Stefan Monnier | 2000-12-11 21:38:19 +0000 |
|---|---|---|
| committer | Stefan Monnier | 2000-12-11 21:38:19 +0000 |
| commit | bb0ffa6f9531718ec3723e09b0ff9fad838572aa (patch) | |
| tree | 027c45f27416a24a2d384ff760c8f7e128dd00bf /lisp/textmodes | |
| parent | d0c679bc851f71e011390a5f80dc52869781d771 (diff) | |
| download | emacs-bb0ffa6f9531718ec3723e09b0ff9fad838572aa.tar.gz emacs-bb0ffa6f9531718ec3723e09b0ff9fad838572aa.zip | |
Moved from textmodes/ooutline.el to obsolete/ooutline.el
Diffstat (limited to 'lisp/textmodes')
| -rw-r--r-- | lisp/textmodes/ooutline.el | 585 |
1 files changed, 0 insertions, 585 deletions
diff --git a/lisp/textmodes/ooutline.el b/lisp/textmodes/ooutline.el deleted file mode 100644 index f2a324bd0f1..00000000000 --- a/lisp/textmodes/ooutline.el +++ /dev/null | |||
| @@ -1,585 +0,0 @@ | |||
| 1 | ;;; outline.el --- outline mode commands for Emacs | ||
| 2 | |||
| 3 | ;; Copyright (C) 1986, 1993, 1994, 1997 Free Software Foundation, Inc. | ||
| 4 | |||
| 5 | ;; Maintainer: FSF | ||
| 6 | ;; Keywords: outlines | ||
| 7 | |||
| 8 | ;; This file is part of GNU Emacs. | ||
| 9 | |||
| 10 | ;; GNU Emacs is free software; you can redistribute it and/or modify | ||
| 11 | ;; it under the terms of the GNU General Public License as published by | ||
| 12 | ;; the Free Software Foundation; either version 2, or (at your option) | ||
| 13 | ;; any later version. | ||
| 14 | |||
| 15 | ;; GNU Emacs is distributed in the hope that it will be useful, | ||
| 16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 18 | ;; GNU General Public License for more details. | ||
| 19 | |||
| 20 | ;; You should have received a copy of the GNU General Public License | ||
| 21 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | ||
| 22 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | ||
| 23 | ;; Boston, MA 02111-1307, USA. | ||
| 24 | |||
| 25 | ;;; Commentary: | ||
| 26 | |||
| 27 | ;; This package is a major mode for editing outline-format documents. | ||
| 28 | ;; An outline can be `abstracted' to show headers at any given level, | ||
| 29 | ;; with all stuff below hidden. See the Emacs manual for details. | ||
| 30 | |||
| 31 | ;;; Code: | ||
| 32 | |||
| 33 | ;; Jan '86, Some new features added by Peter Desnoyers and rewritten by RMS. | ||
| 34 | |||
| 35 | (defgroup outlines nil | ||
| 36 | "Support for hierarchical outlining" | ||
| 37 | :prefix "outline-" | ||
| 38 | :group 'editing) | ||
| 39 | |||
| 40 | |||
| 41 | (defcustom outline-regexp nil | ||
| 42 | "*Regular expression to match the beginning of a heading. | ||
| 43 | Any line whose beginning matches this regexp is considered to start a heading. | ||
| 44 | The recommended way to set this is with a Local Variables: list | ||
| 45 | in the file it applies to. See also outline-heading-end-regexp." | ||
| 46 | :type '(choice regexp (const nil)) | ||
| 47 | :group 'outlines) | ||
| 48 | |||
| 49 | ;; Can't initialize this in the defvar above -- some major modes have | ||
| 50 | ;; already assigned a local value to it. | ||
| 51 | (or (default-value 'outline-regexp) | ||
| 52 | (setq-default outline-regexp "[*\^L]+")) | ||
| 53 | |||
| 54 | (defcustom outline-heading-end-regexp "[\n\^M]" | ||
| 55 | "*Regular expression to match the end of a heading line. | ||
| 56 | You can assume that point is at the beginning of a heading when this | ||
| 57 | regexp is searched for. The heading ends at the end of the match. | ||
| 58 | The recommended way to set this is with a \"Local Variables:\" list | ||
| 59 | in the file it applies to." | ||
| 60 | :type 'regexp | ||
| 61 | :group 'outlines) | ||
| 62 | |||
| 63 | (defvar outline-mode-prefix-map nil) | ||
| 64 | |||
| 65 | (if outline-mode-prefix-map | ||
| 66 | nil | ||
| 67 | (setq outline-mode-prefix-map (make-sparse-keymap)) | ||
| 68 | (define-key outline-mode-prefix-map "\C-n" 'outline-next-visible-heading) | ||
| 69 | (define-key outline-mode-prefix-map "\C-p" 'outline-previous-visible-heading) | ||
| 70 | (define-key outline-mode-prefix-map "\C-i" 'show-children) | ||
| 71 | (define-key outline-mode-prefix-map "\C-s" 'show-subtree) | ||
| 72 | (define-key outline-mode-prefix-map "\C-d" 'hide-subtree) | ||
| 73 | (define-key outline-mode-prefix-map "\C-u" 'outline-up-heading) | ||
| 74 | (define-key outline-mode-prefix-map "\C-f" 'outline-forward-same-level) | ||
| 75 | (define-key outline-mode-prefix-map "\C-b" 'outline-backward-same-level) | ||
| 76 | (define-key outline-mode-prefix-map "\C-t" 'hide-body) | ||
| 77 | (define-key outline-mode-prefix-map "\C-a" 'show-all) | ||
| 78 | (define-key outline-mode-prefix-map "\C-c" 'hide-entry) | ||
| 79 | (define-key outline-mode-prefix-map "\C-e" 'show-entry) | ||
| 80 | (define-key outline-mode-prefix-map "\C-l" 'hide-leaves) | ||
| 81 | (define-key outline-mode-prefix-map "\C-k" 'show-branches) | ||
| 82 | (define-key outline-mode-prefix-map "\C-q" 'hide-sublevels) | ||
| 83 | (define-key outline-mode-prefix-map "\C-o" 'hide-other)) | ||
| 84 | |||
| 85 | (defvar outline-mode-menu-bar-map nil) | ||
| 86 | (if outline-mode-menu-bar-map | ||
| 87 | nil | ||
| 88 | (setq outline-mode-menu-bar-map (make-sparse-keymap)) | ||
| 89 | |||
| 90 | (define-key outline-mode-menu-bar-map [hide] | ||
| 91 | (cons "Hide" (make-sparse-keymap "Hide"))) | ||
| 92 | |||
| 93 | (define-key outline-mode-menu-bar-map [hide hide-other] | ||
| 94 | '("Hide Other" . hide-other)) | ||
| 95 | (define-key outline-mode-menu-bar-map [hide hide-sublevels] | ||
| 96 | '("Hide Sublevels" . hide-sublevels)) | ||
| 97 | (define-key outline-mode-menu-bar-map [hide hide-subtree] | ||
| 98 | '("Hide Subtree" . hide-subtree)) | ||
| 99 | (define-key outline-mode-menu-bar-map [hide hide-entry] | ||
| 100 | '("Hide Entry" . hide-entry)) | ||
| 101 | (define-key outline-mode-menu-bar-map [hide hide-body] | ||
| 102 | '("Hide Body" . hide-body)) | ||
| 103 | (define-key outline-mode-menu-bar-map [hide hide-leaves] | ||
| 104 | '("Hide Leaves" . hide-leaves)) | ||
| 105 | |||
| 106 | (define-key outline-mode-menu-bar-map [show] | ||
| 107 | (cons "Show" (make-sparse-keymap "Show"))) | ||
| 108 | |||
| 109 | (define-key outline-mode-menu-bar-map [show show-subtree] | ||
| 110 | '("Show Subtree" . show-subtree)) | ||
| 111 | (define-key outline-mode-menu-bar-map [show show-children] | ||
| 112 | '("Show Children" . show-children)) | ||
| 113 | (define-key outline-mode-menu-bar-map [show show-branches] | ||
| 114 | '("Show Branches" . show-branches)) | ||
| 115 | (define-key outline-mode-menu-bar-map [show show-entry] | ||
| 116 | '("Show Entry" . show-entry)) | ||
| 117 | (define-key outline-mode-menu-bar-map [show show-all] | ||
| 118 | '("Show All" . show-all)) | ||
| 119 | |||
| 120 | (define-key outline-mode-menu-bar-map [headings] | ||
| 121 | (cons "Headings" (make-sparse-keymap "Headings"))) | ||
| 122 | |||
| 123 | (define-key outline-mode-menu-bar-map [headings outline-backward-same-level] | ||
| 124 | '("Previous Same Level" . outline-backward-same-level)) | ||
| 125 | (define-key outline-mode-menu-bar-map [headings outline-forward-same-level] | ||
| 126 | '("Next Same Level" . outline-forward-same-level)) | ||
| 127 | (define-key outline-mode-menu-bar-map [headings outline-previous-visible-heading] | ||
| 128 | '("Previous" . outline-previous-visible-heading)) | ||
| 129 | (define-key outline-mode-menu-bar-map [headings outline-next-visible-heading] | ||
| 130 | '("Next" . outline-next-visible-heading)) | ||
| 131 | (define-key outline-mode-menu-bar-map [headings outline-up-heading] | ||
| 132 | '("Up" . outline-up-heading))) | ||
| 133 | |||
| 134 | (defvar outline-mode-map nil "") | ||
| 135 | |||
| 136 | (if outline-mode-map | ||
| 137 | nil | ||
| 138 | (setq outline-mode-map (nconc (make-sparse-keymap) text-mode-map)) | ||
| 139 | (define-key outline-mode-map "\C-c" outline-mode-prefix-map) | ||
| 140 | (define-key outline-mode-map [menu-bar] outline-mode-menu-bar-map)) | ||
| 141 | |||
| 142 | (defcustom outline-minor-mode nil | ||
| 143 | "Non-nil if using Outline mode as a minor mode of some other mode." | ||
| 144 | :type 'boolean | ||
| 145 | :group 'outlines) | ||
| 146 | (make-variable-buffer-local 'outline-minor-mode) | ||
| 147 | (put 'outline-minor-mode 'permanent-local t) | ||
| 148 | (or (assq 'outline-minor-mode minor-mode-alist) | ||
| 149 | (setq minor-mode-alist (append minor-mode-alist | ||
| 150 | (list '(outline-minor-mode " Outl"))))) | ||
| 151 | |||
| 152 | (defvar outline-font-lock-keywords | ||
| 153 | '(;; Highlight headings according to the level. | ||
| 154 | ("^\\([*]+\\)[ \t]*\\([^\n\r]+\\)?[ \t]*[\n\r]" | ||
| 155 | (1 font-lock-string-face) | ||
| 156 | (2 (let ((len (- (match-end 1) (match-beginning 1)))) | ||
| 157 | (or (cdr (assq len '((1 . font-lock-function-name-face) | ||
| 158 | (2 . font-lock-keyword-face) | ||
| 159 | (3 . font-lock-comment-face)))) | ||
| 160 | font-lock-variable-name-face)) | ||
| 161 | nil t)) | ||
| 162 | ;; Highlight citations of the form [1] and [Mar94]. | ||
| 163 | ("\\[\\([[:upper:]][[:alpha:]]+\\)*[0-9]+\\]" . font-lock-type-face)) | ||
| 164 | "Additional expressions to highlight in Outline mode.") | ||
| 165 | |||
| 166 | (defun outline-mode () | ||
| 167 | "Set major mode for editing outlines with selective display. | ||
| 168 | Headings are lines which start with asterisks: one for major headings, | ||
| 169 | two for subheadings, etc. Lines not starting with asterisks are body lines. | ||
| 170 | |||
| 171 | Body text or subheadings under a heading can be made temporarily | ||
| 172 | invisible, or visible again. Invisible lines are attached to the end | ||
| 173 | of the heading, so they move with it, if the line is killed and yanked | ||
| 174 | back. A heading with text hidden under it is marked with an ellipsis (...). | ||
| 175 | |||
| 176 | Commands:\\<outline-mode-map> | ||
| 177 | \\[outline-next-visible-heading] outline-next-visible-heading move by visible headings | ||
| 178 | \\[outline-previous-visible-heading] outline-previous-visible-heading | ||
| 179 | \\[outline-forward-same-level] outline-forward-same-level similar but skip subheadings | ||
| 180 | \\[outline-backward-same-level] outline-backward-same-level | ||
| 181 | \\[outline-up-heading] outline-up-heading move from subheading to heading | ||
| 182 | |||
| 183 | \\[hide-body] make all text invisible (not headings). | ||
| 184 | \\[show-all] make everything in buffer visible. | ||
| 185 | |||
| 186 | The remaining commands are used when point is on a heading line. | ||
| 187 | They apply to some of the body or subheadings of that heading. | ||
| 188 | \\[hide-subtree] hide-subtree make body and subheadings invisible. | ||
| 189 | \\[show-subtree] show-subtree make body and subheadings visible. | ||
| 190 | \\[show-children] show-children make direct subheadings visible. | ||
| 191 | No effect on body, or subheadings 2 or more levels down. | ||
| 192 | With arg N, affects subheadings N levels down. | ||
| 193 | \\[hide-entry] make immediately following body invisible. | ||
| 194 | \\[show-entry] make it visible. | ||
| 195 | \\[hide-leaves] make body under heading and under its subheadings invisible. | ||
| 196 | The subheadings remain visible. | ||
| 197 | \\[show-branches] make all subheadings at all levels visible. | ||
| 198 | |||
| 199 | The variable `outline-regexp' can be changed to control what is a heading. | ||
| 200 | A line is a heading if `outline-regexp' matches something at the | ||
| 201 | beginning of the line. The longer the match, the deeper the level. | ||
| 202 | |||
| 203 | Turning on outline mode calls the value of `text-mode-hook' and then of | ||
| 204 | `outline-mode-hook', if they are non-nil." | ||
| 205 | (interactive) | ||
| 206 | (kill-all-local-variables) | ||
| 207 | (setq selective-display t) | ||
| 208 | (use-local-map outline-mode-map) | ||
| 209 | (setq mode-name "Outline") | ||
| 210 | (setq major-mode 'outline-mode) | ||
| 211 | (define-abbrev-table 'text-mode-abbrev-table ()) | ||
| 212 | (setq local-abbrev-table text-mode-abbrev-table) | ||
| 213 | (set-syntax-table text-mode-syntax-table) | ||
| 214 | (make-local-variable 'paragraph-start) | ||
| 215 | (setq paragraph-start (concat paragraph-start "\\|\\(" | ||
| 216 | outline-regexp "\\)")) | ||
| 217 | ;; Inhibit auto-filling of header lines. | ||
| 218 | (make-local-variable 'auto-fill-inhibit-regexp) | ||
| 219 | (setq auto-fill-inhibit-regexp outline-regexp) | ||
| 220 | (make-local-variable 'paragraph-separate) | ||
| 221 | (setq paragraph-separate (concat paragraph-separate "\\|\\(" | ||
| 222 | outline-regexp "\\)")) | ||
| 223 | (make-local-variable 'font-lock-defaults) | ||
| 224 | (setq font-lock-defaults '(outline-font-lock-keywords t)) | ||
| 225 | (make-local-variable 'change-major-mode-hook) | ||
| 226 | (add-hook 'change-major-mode-hook 'show-all) | ||
| 227 | (run-hooks 'text-mode-hook 'outline-mode-hook)) | ||
| 228 | |||
| 229 | (defcustom outline-minor-mode-prefix "\C-c@" | ||
| 230 | "*Prefix key to use for Outline commands in Outline minor mode. | ||
| 231 | The value of this variable is checked as part of loading Outline mode. | ||
| 232 | After that, changing the prefix key requires manipulating keymaps." | ||
| 233 | :type 'string | ||
| 234 | :group 'outlines) | ||
| 235 | |||
| 236 | (defvar outline-minor-mode-map nil) | ||
| 237 | (if outline-minor-mode-map | ||
| 238 | nil | ||
| 239 | (setq outline-minor-mode-map (make-sparse-keymap)) | ||
| 240 | (define-key outline-minor-mode-map [menu-bar] | ||
| 241 | outline-mode-menu-bar-map) | ||
| 242 | (define-key outline-minor-mode-map outline-minor-mode-prefix | ||
| 243 | outline-mode-prefix-map)) | ||
| 244 | |||
| 245 | (or (assq 'outline-minor-mode minor-mode-map-alist) | ||
| 246 | (setq minor-mode-map-alist | ||
| 247 | (cons (cons 'outline-minor-mode outline-minor-mode-map) | ||
| 248 | minor-mode-map-alist))) | ||
| 249 | |||
| 250 | (defun outline-minor-mode (&optional arg) | ||
| 251 | "Toggle Outline minor mode. | ||
| 252 | With arg, turn Outline minor mode on if arg is positive, off otherwise. | ||
| 253 | See the command `outline-mode' for more information on this mode." | ||
| 254 | (interactive "P") | ||
| 255 | (setq outline-minor-mode | ||
| 256 | (if (null arg) (not outline-minor-mode) | ||
| 257 | (> (prefix-numeric-value arg) 0))) | ||
| 258 | (if outline-minor-mode | ||
| 259 | (progn | ||
| 260 | (setq selective-display t) | ||
| 261 | (run-hooks 'outline-minor-mode-hook)) | ||
| 262 | (setq selective-display nil)) | ||
| 263 | ;; When turning off outline mode, get rid of any ^M's. | ||
| 264 | (or outline-minor-mode | ||
| 265 | (outline-flag-region (point-min) (point-max) ?\n)) | ||
| 266 | (force-mode-line-update)) | ||
| 267 | |||
| 268 | (defvar outline-level 'outline-level | ||
| 269 | "Function of no args to compute a header's nesting level in an outline. | ||
| 270 | It can assume point is at the beginning of a header line.") | ||
| 271 | |||
| 272 | ;; This used to count columns rather than characters, but that made ^L | ||
| 273 | ;; appear to be at level 2 instead of 1. Columns would be better for | ||
| 274 | ;; tab handling, but the default regexp doesn't use tabs, and anyone | ||
| 275 | ;; who changes the regexp can also redefine the outline-level variable | ||
| 276 | ;; as appropriate. | ||
| 277 | (defun outline-level () | ||
| 278 | "Return the depth to which a statement is nested in the outline. | ||
| 279 | Point must be at the beginning of a header line. This is actually | ||
| 280 | the number of characters that `outline-regexp' matches." | ||
| 281 | (save-excursion | ||
| 282 | (looking-at outline-regexp) | ||
| 283 | (- (match-end 0) (match-beginning 0)))) | ||
| 284 | |||
| 285 | (defun outline-next-preface () | ||
| 286 | "Skip forward to just before the next heading line. | ||
| 287 | If there's no following heading line, stop before the newline | ||
| 288 | at the end of the buffer." | ||
| 289 | (if (re-search-forward (concat "[\n\^M]\\(" outline-regexp "\\)") | ||
| 290 | nil 'move) | ||
| 291 | (goto-char (match-beginning 0))) | ||
| 292 | (if (memq (preceding-char) '(?\n ?\^M)) | ||
| 293 | (forward-char -1))) | ||
| 294 | |||
| 295 | (defun outline-next-heading () | ||
| 296 | "Move to the next (possibly invisible) heading line." | ||
| 297 | (interactive) | ||
| 298 | (if (re-search-forward (concat "[\n\^M]\\(" outline-regexp "\\)") | ||
| 299 | nil 'move) | ||
| 300 | (goto-char (1+ (match-beginning 0))))) | ||
| 301 | |||
| 302 | (defun outline-back-to-heading () | ||
| 303 | "Move to previous heading line, or beg of this line if it's a heading. | ||
| 304 | Only visible heading lines are considered." | ||
| 305 | (beginning-of-line) | ||
| 306 | (or (outline-on-heading-p) | ||
| 307 | (re-search-backward (concat "^\\(" outline-regexp "\\)") nil t) | ||
| 308 | (error "before first heading"))) | ||
| 309 | |||
| 310 | (defun outline-on-heading-p () | ||
| 311 | "Return t if point is on a (visible) heading line." | ||
| 312 | (save-excursion | ||
| 313 | (beginning-of-line) | ||
| 314 | (and (bolp) | ||
| 315 | (looking-at outline-regexp)))) | ||
| 316 | |||
| 317 | (defun outline-end-of-heading () | ||
| 318 | (if (re-search-forward outline-heading-end-regexp nil 'move) | ||
| 319 | (forward-char -1))) | ||
| 320 | |||
| 321 | (defun outline-next-visible-heading (arg) | ||
| 322 | "Move to the next visible heading line. | ||
| 323 | With argument, repeats or can move backward if negative. | ||
| 324 | A heading line is one that starts with a `*' (or that | ||
| 325 | `outline-regexp' matches)." | ||
| 326 | (interactive "p") | ||
| 327 | (if (< arg 0) | ||
| 328 | (beginning-of-line) | ||
| 329 | (end-of-line)) | ||
| 330 | (or (re-search-forward (concat "^\\(" outline-regexp "\\)") nil t arg) | ||
| 331 | (error "")) | ||
| 332 | (beginning-of-line)) | ||
| 333 | |||
| 334 | (defun outline-previous-visible-heading (arg) | ||
| 335 | "Move to the previous heading line. | ||
| 336 | With argument, repeats or can move forward if negative. | ||
| 337 | A heading line is one that starts with a `*' (or that | ||
| 338 | `outline-regexp' matches)." | ||
| 339 | (interactive "p") | ||
| 340 | (outline-next-visible-heading (- arg))) | ||
| 341 | |||
| 342 | (defun outline-flag-region (from to flag) | ||
| 343 | "Hides or shows lines from FROM to TO, according to FLAG. | ||
| 344 | If FLAG is `\\n' (newline character) then text is shown, | ||
| 345 | while if FLAG is `\\^M' (control-M) the text is hidden." | ||
| 346 | (let (buffer-read-only) | ||
| 347 | (subst-char-in-region from to | ||
| 348 | (if (= flag ?\n) ?\^M ?\n) | ||
| 349 | flag t))) | ||
| 350 | |||
| 351 | (defun hide-entry () | ||
| 352 | "Hide the body directly following this heading." | ||
| 353 | (interactive) | ||
| 354 | (outline-back-to-heading) | ||
| 355 | (outline-end-of-heading) | ||
| 356 | (save-excursion | ||
| 357 | (outline-flag-region (point) (progn (outline-next-preface) (point)) ?\^M))) | ||
| 358 | |||
| 359 | (defun show-entry () | ||
| 360 | "Show the body directly following this heading." | ||
| 361 | (interactive) | ||
| 362 | (save-excursion | ||
| 363 | (outline-flag-region (point) (progn (outline-next-preface) (point)) ?\n))) | ||
| 364 | |||
| 365 | (defun hide-body () | ||
| 366 | "Hide all of buffer except headings." | ||
| 367 | (interactive) | ||
| 368 | (hide-region-body (point-min) (point-max))) | ||
| 369 | |||
| 370 | (defun hide-region-body (start end) | ||
| 371 | "Hide all body lines in the region, but not headings." | ||
| 372 | (save-excursion | ||
| 373 | (save-restriction | ||
| 374 | (narrow-to-region start end) | ||
| 375 | (goto-char (point-min)) | ||
| 376 | (if (outline-on-heading-p) | ||
| 377 | (outline-end-of-heading)) | ||
| 378 | (while (not (eobp)) | ||
| 379 | (outline-flag-region (point) | ||
| 380 | (progn (outline-next-preface) (point)) ?\^M) | ||
| 381 | (if (not (eobp)) | ||
| 382 | (progn | ||
| 383 | (forward-char | ||
| 384 | (if (looking-at "[\n\^M][\n\^M]") | ||
| 385 | 2 1)) | ||
| 386 | (outline-end-of-heading))))))) | ||
| 387 | |||
| 388 | (defun show-all () | ||
| 389 | "Show all of the text in the buffer." | ||
| 390 | (interactive) | ||
| 391 | (outline-flag-region (point-min) (point-max) ?\n)) | ||
| 392 | |||
| 393 | (defun hide-subtree () | ||
| 394 | "Hide everything after this heading at deeper levels." | ||
| 395 | (interactive) | ||
| 396 | (outline-flag-subtree ?\^M)) | ||
| 397 | |||
| 398 | (defun hide-leaves () | ||
| 399 | "Hide all body after this heading at deeper levels." | ||
| 400 | (interactive) | ||
| 401 | (outline-back-to-heading) | ||
| 402 | (outline-end-of-heading) | ||
| 403 | (hide-region-body (point) (progn (outline-end-of-subtree) (point)))) | ||
| 404 | |||
| 405 | (defun show-subtree () | ||
| 406 | "Show everything after this heading at deeper levels." | ||
| 407 | (interactive) | ||
| 408 | (outline-flag-subtree ?\n)) | ||
| 409 | |||
| 410 | (defun hide-sublevels (levels) | ||
| 411 | "Hide everything but the top LEVELS levels of headers, in whole buffer." | ||
| 412 | (interactive "p") | ||
| 413 | (if (< levels 1) | ||
| 414 | (error "Must keep at least one level of headers")) | ||
| 415 | (setq levels (1- levels)) | ||
| 416 | (save-excursion | ||
| 417 | (goto-char (point-min)) | ||
| 418 | ;; Keep advancing to the next top-level heading. | ||
| 419 | (while (or (and (bobp) (outline-on-heading-p)) | ||
| 420 | (outline-next-heading)) | ||
| 421 | (let ((end (save-excursion (outline-end-of-subtree) (point)))) | ||
| 422 | ;; Hide everything under that. | ||
| 423 | (outline-flag-region (point) end ?\^M) | ||
| 424 | ;; Show the first LEVELS levels under that. | ||
| 425 | (if (> levels 0) | ||
| 426 | (show-children levels)) | ||
| 427 | ;; Move to the next, since we already found it. | ||
| 428 | (goto-char end))))) | ||
| 429 | |||
| 430 | (defun hide-other () | ||
| 431 | "Hide everything except for the current body and the parent headings." | ||
| 432 | (interactive) | ||
| 433 | (hide-sublevels 1) | ||
| 434 | (let ((last (point)) | ||
| 435 | (pos (point))) | ||
| 436 | (while (save-excursion | ||
| 437 | (and (re-search-backward "[\n\r]" nil t) | ||
| 438 | (eq (following-char) ?\r))) | ||
| 439 | (save-excursion | ||
| 440 | (beginning-of-line) | ||
| 441 | (if (eq last (point)) | ||
| 442 | (progn | ||
| 443 | (outline-next-heading) | ||
| 444 | (outline-flag-region last (point) ?\n)) | ||
| 445 | (show-children) | ||
| 446 | (setq last (point))))))) | ||
| 447 | |||
| 448 | (defun outline-flag-subtree (flag) | ||
| 449 | (save-excursion | ||
| 450 | (outline-back-to-heading) | ||
| 451 | (outline-end-of-heading) | ||
| 452 | (outline-flag-region (point) | ||
| 453 | (progn (outline-end-of-subtree) (point)) | ||
| 454 | flag))) | ||
| 455 | |||
| 456 | (defun outline-end-of-subtree () | ||
| 457 | (outline-back-to-heading) | ||
| 458 | (let ((opoint (point)) | ||
| 459 | (first t) | ||
| 460 | (level (funcall outline-level))) | ||
| 461 | (while (and (not (eobp)) | ||
| 462 | (or first (> (funcall outline-level) level))) | ||
| 463 | (setq first nil) | ||
| 464 | (outline-next-heading)) | ||
| 465 | (if (memq (preceding-char) '(?\n ?\^M)) | ||
| 466 | (progn | ||
| 467 | ;; Go to end of line before heading | ||
| 468 | (forward-char -1) | ||
| 469 | (if (memq (preceding-char) '(?\n ?\^M)) | ||
| 470 | ;; leave blank line before heading | ||
| 471 | (forward-char -1)))))) | ||
| 472 | |||
| 473 | (defun show-branches () | ||
| 474 | "Show all subheadings of this heading, but not their bodies." | ||
| 475 | (interactive) | ||
| 476 | (show-children 1000)) | ||
| 477 | |||
| 478 | (defun show-children (&optional level) | ||
| 479 | "Show all direct subheadings of this heading. | ||
| 480 | Prefix arg LEVEL is how many levels below the current level should be shown. | ||
| 481 | Default is enough to cause the following heading to appear." | ||
| 482 | (interactive "P") | ||
| 483 | (setq level | ||
| 484 | (if level (prefix-numeric-value level) | ||
| 485 | (save-excursion | ||
| 486 | (outline-back-to-heading) | ||
| 487 | (let ((start-level (funcall outline-level))) | ||
| 488 | (outline-next-heading) | ||
| 489 | (if (eobp) | ||
| 490 | 1 | ||
| 491 | (max 1 (- (funcall outline-level) start-level))))))) | ||
| 492 | (save-excursion | ||
| 493 | (save-restriction | ||
| 494 | (outline-back-to-heading) | ||
| 495 | (setq level (+ level (funcall outline-level))) | ||
| 496 | (narrow-to-region (point) | ||
| 497 | (progn (outline-end-of-subtree) | ||
| 498 | (if (eobp) (point-max) (1+ (point))))) | ||
| 499 | (goto-char (point-min)) | ||
| 500 | (while (and (not (eobp)) | ||
| 501 | (progn | ||
| 502 | (outline-next-heading) | ||
| 503 | (not (eobp)))) | ||
| 504 | (if (<= (funcall outline-level) level) | ||
| 505 | (save-excursion | ||
| 506 | (outline-flag-region (save-excursion | ||
| 507 | (forward-char -1) | ||
| 508 | (if (memq (preceding-char) '(?\n ?\^M)) | ||
| 509 | (forward-char -1)) | ||
| 510 | (point)) | ||
| 511 | (progn (outline-end-of-heading) (point)) | ||
| 512 | ?\n))))))) | ||
| 513 | |||
| 514 | (defun outline-up-heading (arg) | ||
| 515 | "Move to the heading line of which the present line is a subheading. | ||
| 516 | With argument, move up ARG levels." | ||
| 517 | (interactive "p") | ||
| 518 | (outline-back-to-heading) | ||
| 519 | (if (eq (funcall outline-level) 1) | ||
| 520 | (error "")) | ||
| 521 | (while (and (> (funcall outline-level) 1) | ||
| 522 | (> arg 0) | ||
| 523 | (not (bobp))) | ||
| 524 | (let ((present-level (funcall outline-level))) | ||
| 525 | (while (not (< (funcall outline-level) present-level)) | ||
| 526 | (outline-previous-visible-heading 1)) | ||
| 527 | (setq arg (- arg 1))))) | ||
| 528 | |||
| 529 | (defun outline-forward-same-level (arg) | ||
| 530 | "Move forward to the ARG'th subheading at same level as this one. | ||
| 531 | Stop at the first and last subheadings of a superior heading." | ||
| 532 | (interactive "p") | ||
| 533 | (outline-back-to-heading) | ||
| 534 | (while (> arg 0) | ||
| 535 | (let ((point-to-move-to (save-excursion | ||
| 536 | (outline-get-next-sibling)))) | ||
| 537 | (if point-to-move-to | ||
| 538 | (progn | ||
| 539 | (goto-char point-to-move-to) | ||
| 540 | (setq arg (1- arg))) | ||
| 541 | (progn | ||
| 542 | (setq arg 0) | ||
| 543 | (error "")))))) | ||
| 544 | |||
| 545 | (defun outline-get-next-sibling () | ||
| 546 | "Move to next heading of the same level, and return point or nil if none." | ||
| 547 | (let ((level (funcall outline-level))) | ||
| 548 | (outline-next-visible-heading 1) | ||
| 549 | (while (and (> (funcall outline-level) level) | ||
| 550 | (not (eobp))) | ||
| 551 | (outline-next-visible-heading 1)) | ||
| 552 | (if (< (funcall outline-level) level) | ||
| 553 | nil | ||
| 554 | (point)))) | ||
| 555 | |||
| 556 | (defun outline-backward-same-level (arg) | ||
| 557 | "Move backward to the ARG'th subheading at same level as this one. | ||
| 558 | Stop at the first and last subheadings of a superior heading." | ||
| 559 | (interactive "p") | ||
| 560 | (outline-back-to-heading) | ||
| 561 | (while (> arg 0) | ||
| 562 | (let ((point-to-move-to (save-excursion | ||
| 563 | (outline-get-last-sibling)))) | ||
| 564 | (if point-to-move-to | ||
| 565 | (progn | ||
| 566 | (goto-char point-to-move-to) | ||
| 567 | (setq arg (1- arg))) | ||
| 568 | (progn | ||
| 569 | (setq arg 0) | ||
| 570 | (error "")))))) | ||
| 571 | |||
| 572 | (defun outline-get-last-sibling () | ||
| 573 | "Move to next heading of the same level, and return point or nil if none." | ||
| 574 | (let ((level (funcall outline-level))) | ||
| 575 | (outline-previous-visible-heading 1) | ||
| 576 | (while (and (> (funcall outline-level) level) | ||
| 577 | (not (bobp))) | ||
| 578 | (outline-previous-visible-heading 1)) | ||
| 579 | (if (< (funcall outline-level) level) | ||
| 580 | nil | ||
| 581 | (point)))) | ||
| 582 | |||
| 583 | (provide 'outline) | ||
| 584 | |||
| 585 | ;;; outline.el ends here | ||