lisp/textmodes/reftex-sel.el

   1 ;;; reftex-sel.el --- the selection modes for RefTeX
   2
   3 ;; Copyright (C) 1997-2015 Free Software Foundation, Inc.
   4
   5 ;; Author: Carsten Dominik <dominik@science.uva.nl>
   6 ;; Maintainer: auctex-devel@gnu.org
   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 3 of the License, or
  13 ;; (at your option) 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.  If not, see <http://www.gnu.org/licenses/>.
  22
  23 ;;; Commentary:
  24
  25 ;;; Code:
  26
  27 (eval-when-compile (require 'cl))
  28
  29 (require 'reftex)
  30
  31 ;; Common bindings in reftex-select-label-mode-map
  32 ;; and reftex-select-bib-mode-map.
  33 (defvar reftex-select-shared-map
  34   (let ((map (make-sparse-keymap)))
  35     (substitute-key-definition
  36      'next-line 'reftex-select-next                      map global-map)
  37     (substitute-key-definition
  38      'previous-line 'reftex-select-previous              map global-map)
  39     (substitute-key-definition
  40      'keyboard-quit 'reftex-select-keyboard-quit         map global-map)
  41     (substitute-key-definition
  42      'newline 'reftex-select-accept                      map global-map)
  43
  44     (loop for x in
  45           '((" "        . reftex-select-callback)
  46             ("n"        . reftex-select-next)
  47             ([(down)]   . reftex-select-next)
  48             ("p"        . reftex-select-previous)
  49             ([(up)]     . reftex-select-previous)
  50             ("f"        . reftex-select-toggle-follow)
  51             ("\C-m"     . reftex-select-accept)
  52             ([(return)] . reftex-select-accept)
  53             ("q"        . reftex-select-quit)
  54             ("."        . reftex-select-show-insertion-point)
  55             ("?"        . reftex-select-help))
  56           do (define-key map (car x) (cdr x)))
  57
  58     ;; The mouse-2 binding
  59     (if (featurep 'xemacs)
  60         (define-key map [(button2)] 'reftex-select-mouse-accept)
  61       (define-key map [(mouse-2)] 'reftex-select-mouse-accept)
  62       (define-key map [follow-link] 'mouse-face))
  63
  64
  65     ;; Digit arguments
  66     (loop for key across "0123456789" do
  67           (define-key map (vector (list key)) 'digit-argument))
  68     (define-key map "-" 'negative-argument)
  69     map))
  70
  71 (define-obsolete-variable-alias
  72   'reftex-select-label-map 'reftex-select-label-mode-map "24.1")
  73 (defvar reftex-select-label-mode-map
  74   (let ((map (make-sparse-keymap)))
  75     (set-keymap-parent map reftex-select-shared-map)
  76
  77     (loop for key across "aAcgFlrRstx#%" do
  78           (define-key map (vector (list key))
  79             (list 'lambda '()
  80                   "Press `?' during selection to find out about this key."
  81                   '(interactive) (list 'throw '(quote myexit) key))))
  82
  83     (loop for x in
  84           '(("b"        . reftex-select-jump-to-previous)
  85             ("z"        . reftex-select-jump)
  86             ("v"        . reftex-select-cycle-ref-style-forward)
  87             ("V"        . reftex-select-cycle-ref-style-backward)
  88             ("m"        . reftex-select-mark)
  89             ("u"        . reftex-select-unmark)
  90             (","        . reftex-select-mark-comma)
  91             ("-"        . reftex-select-mark-to)
  92             ("+"        . reftex-select-mark-and)
  93             ([(tab)]    . reftex-select-read-label)
  94             ("\C-i"     . reftex-select-read-label)
  95             ("\C-c\C-n" . reftex-select-next-heading)
  96             ("\C-c\C-p" . reftex-select-previous-heading))
  97           do
  98           (define-key map (car x) (cdr x)))
  99
 100     map)
 101   "Keymap used for *RefTeX Select* buffer, when selecting a label.
 102 This keymap can be used to configure the label selection process which is
 103 started with the command \\[reftex-reference].")
 104
 105 ;;;###autoload
 106 (define-derived-mode reftex-select-label-mode special-mode "LSelect"
 107   "Major mode for selecting a label in a LaTeX document.
 108 This buffer was created with RefTeX.
 109 It only has a meaningful keymap when you are in the middle of a
 110 selection process.
 111 To select a label, move the cursor to it and press RET.
 112 Press `?' for a summary of important key bindings.
 113
 114 During a selection process, these are the local bindings.
 115
 116 \\{reftex-select-label-mode-map}"
 117   (when (featurep 'xemacs)
 118     ;; XEmacs needs the call to make-local-hook
 119     (make-local-hook 'pre-command-hook)
 120     (make-local-hook 'post-command-hook))
 121   (set (make-local-variable 'reftex-select-marked) nil)
 122   (when (syntax-table-p reftex-latex-syntax-table)
 123     (set-syntax-table reftex-latex-syntax-table))
 124   ;; We do not set a local map - reftex-select-item does this.
 125   )
 126
 127 (define-obsolete-variable-alias
 128   'reftex-select-bib-map 'reftex-select-bib-mode-map "24.1")
 129 (defvar reftex-select-bib-mode-map
 130   (let ((map (make-sparse-keymap)))
 131     (set-keymap-parent map reftex-select-shared-map)
 132
 133     (loop for key across "grRaAeE" do
 134           (define-key map (vector (list key))
 135             (list 'lambda '()
 136                   "Press `?' during selection to find out about this key."
 137                   '(interactive) (list 'throw '(quote myexit) key))))
 138
 139     (loop for x in
 140           '(("\C-i"  . reftex-select-read-cite)
 141             ([(tab)] . reftex-select-read-cite)
 142             ("m"     . reftex-select-mark)
 143             ("u"     . reftex-select-unmark))
 144           do (define-key map (car x) (cdr x)))
 145
 146     map)
 147   "Keymap used for *RefTeX Select* buffer, when selecting a BibTeX entry.
 148 This keymap can be used to configure the BibTeX selection process which is
 149 started with the command \\[reftex-citation].")
 150
 151 ;;;###autoload
 152 (define-derived-mode reftex-select-bib-mode special-mode "BSelect"
 153   "Major mode for selecting a citation key in a LaTeX document.
 154 This buffer was created with RefTeX.
 155 It only has a meaningful keymap when you are in the middle of a
 156 selection process.
 157 In order to select a citation, move the cursor to it and press RET.
 158 Press `?' for a summary of important key bindings.
 159
 160 During a selection process, these are the local bindings.
 161
 162 \\{reftex-select-label-mode-map}"
 163   (when (featurep 'xemacs)
 164     ;; XEmacs needs the call to make-local-hook
 165     (make-local-hook 'pre-command-hook)
 166     (make-local-hook 'post-command-hook))
 167   (set (make-local-variable 'reftex-select-marked) nil)
 168   ;; We do not set a local map - reftex-select-item does this.
 169   )
 170
 171 ;; (defun reftex-get-offset (buf here-am-I &optional typekey toc index file)
 172 ;;   ;; Find the correct offset data, like insert-docstruct would, but faster.
 173 ;;   ;; Buffer BUF knows the correct docstruct to use.
 174 ;;   ;; Basically this finds the first docstruct entry after HERE-I-AM which
 175 ;;   ;; is of allowed type.  The optional arguments specify what is allowed.
 176 ;;   (catch 'exit
 177 ;;     (with-current-buffer buf
 178 ;;       (reftex-access-scan-info)
 179 ;;       (let* ((rest (memq here-am-I (symbol-value reftex-docstruct-symbol)))
 180 ;;          entry)
 181 ;;     (while (setq entry (pop rest))
 182 ;;       (if (or (and typekey
 183 ;;                    (stringp (car entry))
 184 ;;                    (or (equal typekey " ")
 185 ;;                        (equal typekey (nth 1 entry))))
 186 ;;               (and toc (eq (car entry) 'toc))
 187 ;;               (and index (eq (car entry) 'index))
 188 ;;               (and file
 189 ;;                    (memq (car entry) '(bof eof file-error))))
 190 ;;           (throw 'exit entry)))
 191 ;;     nil))))
 192
 193 ;;;###autoload
 194 (defun reftex-get-offset (buf here-am-I &optional typekey toc index file)
 195   ;; Find the correct offset data, like insert-docstruct would, but faster.
 196   ;; Buffer BUF knows the correct docstruct to use.
 197   ;; Basically this finds the first docstruct entry before HERE-I-AM which
 198   ;; is of allowed type.  The optional arguments specify what is allowed.
 199   (catch 'exit
 200     (with-current-buffer buf
 201       (reftex-access-scan-info)
 202       (let* ((rest (symbol-value reftex-docstruct-symbol))
 203              lastentry entry)
 204         (while (setq entry (pop rest))
 205           (if (or (and typekey
 206                        (stringp (car entry))
 207                        (or (equal typekey " ")
 208                            (equal typekey (nth 1 entry))))
 209                   (and toc (eq (car entry) 'toc))
 210                   (and index (eq (car entry) 'index))
 211                   (and file
 212                        (memq (car entry) '(bof eof file-error))))
 213               (setq lastentry entry))
 214           (if (eq entry here-am-I)
 215               (throw 'exit (or lastentry entry))))
 216         nil))))
 217
 218 ;;;###autoload
 219 (defun reftex-insert-docstruct
 220   (buf toc labels index-entries files context counter show-commented
 221             here-I-am xr-prefix toc-buffer)
 222   ;; Insert an excerpt of the docstruct list.
 223   ;; Return the data property of the entry corresponding to HERE-I-AM.
 224   ;; BUF is the buffer which has the correct docstruct-symbol.
 225   ;; LABELS non-nil means to include labels into the list.
 226   ;;        When a string, indicates the label type to include
 227   ;; FILES non-nil means to display file boundaries.
 228   ;; CONTEXT non-nil means to include label context.
 229   ;; COUNTER means to count the labels.
 230   ;; SHOW-COMMENTED means to include also labels which are commented out.
 231   ;; HERE-I-AM is a member of the docstruct list.  The function will return
 232   ;;           a used member near to this one, as a possible starting point.
 233   ;; XR-PREFIX is the prefix to put in front of labels.
 234   ;; TOC-BUFFER means this is to fill the toc buffer.
 235   (let* ((font (reftex-use-fonts))
 236          (cnt 0)
 237          (index -1)
 238          (toc-indent " ")
 239          (label-indent
 240           (concat "> "
 241                   (if toc (make-string (* 7 reftex-level-indent) ?\ ) "")))
 242          (context-indent
 243           (concat ".   "
 244                   (if toc (make-string (* 7 reftex-level-indent) ?\ ) "")))
 245          (mouse-face
 246           (if (memq reftex-highlight-selection '(mouse both))
 247               reftex-mouse-selected-face
 248             nil))
 249          (label-face reftex-label-face)
 250          (index-face reftex-index-face)
 251          all cell text label typekey note comment master-dir-re
 252          prev-inserted offset from to index-tag docstruct-symbol)
 253
 254     ;; Pop to buffer buf to get the correct buffer-local variables
 255     (with-current-buffer buf
 256
 257       ;; Ensure access to scanning info
 258       (reftex-access-scan-info)
 259
 260       (setq docstruct-symbol reftex-docstruct-symbol
 261             all (symbol-value reftex-docstruct-symbol)
 262             reftex-active-toc nil
 263             master-dir-re
 264             (concat "\\`" (regexp-quote
 265                            (file-name-directory (reftex-TeX-master-file))))))
 266
 267     (set (make-local-variable 'reftex-docstruct-symbol) docstruct-symbol)
 268     (set (make-local-variable 'reftex-prefix)
 269          (cdr (assoc labels reftex-typekey-to-prefix-alist)))
 270     (if (equal reftex-prefix " ") (setq reftex-prefix nil))
 271
 272     ;; Walk the docstruct and insert the appropriate stuff
 273     (while (setq cell (pop all))
 274
 275       (incf index)
 276       (setq from (point))
 277
 278       (cond
 279
 280        ((memq (car cell) '(bib thebib label-numbers appendix
 281                                master-dir bibview-cache is-multi xr xr-doc)))
 282        ;; These are currently ignored
 283
 284        ((memq (car cell) '(bof eof file-error))
 285         ;; Beginning or end of a file
 286         (when files
 287           (setq prev-inserted cell)
 288 ;         (if (eq offset 'attention) (setq offset cell))
 289           (insert
 290            " File " (if (string-match master-dir-re (nth 1 cell))
 291                    (substring (nth 1 cell) (match-end 0))
 292                  (nth 1 cell))
 293            (cond ((eq (car cell) 'bof) " starts here\n")
 294                  ((eq (car cell) 'eof) " ends here\n")
 295                  ((eq (car cell) 'file-error) " was not found\n")))
 296           (setq to (point))
 297           (when font
 298             (put-text-property from to
 299                                'font-lock-face reftex-file-boundary-face))
 300           (when toc-buffer
 301             (if mouse-face
 302                 (put-text-property from (1- to)
 303                                    'mouse-face mouse-face))
 304             (put-text-property from to :data cell))))
 305
 306        ((eq (car cell) 'toc)
 307         ;; a table of contents entry
 308         (when (and toc
 309                    (<= (nth 5 cell) reftex-toc-max-level))
 310           (setq prev-inserted cell)
 311 ;         (if (eq offset 'attention) (setq offset cell))
 312           (setq reftex-active-toc cell)
 313           (insert (concat toc-indent (nth 2 cell) "\n"))
 314           (setq to (point))
 315           (when font
 316             (put-text-property from to
 317                                'font-lock-face reftex-section-heading-face))
 318           (when toc-buffer
 319             (if mouse-face
 320                 (put-text-property from (1- to)
 321                                    'mouse-face mouse-face))
 322             (put-text-property from to :data cell))
 323           (goto-char to)))
 324
 325        ((stringp (car cell))
 326         ;; a label
 327         (when (null (nth 2 cell))
 328           ;; No context yet.  Quick update.
 329           (setcdr cell (cdr (reftex-label-info-update cell)))
 330           (put docstruct-symbol 'modified t))
 331
 332         (setq label   (car cell)
 333               typekey (nth 1 cell)
 334               text    (nth 2 cell)
 335               comment (nth 4 cell)
 336               note    (nth 5 cell))
 337
 338         (when (and labels
 339                    (or (eq labels t)
 340                        (string= typekey labels)
 341                        (string= labels " "))
 342                    (or show-commented (null comment)))
 343
 344           ;; Yes we want this one
 345           (incf cnt)
 346           (setq prev-inserted cell)
 347 ;         (if (eq offset 'attention) (setq offset cell))
 348
 349           (setq label (concat xr-prefix label))
 350           (when comment (setq label (concat "% " label)))
 351           (insert label-indent label)
 352           (when font
 353             (setq to (point))
 354             (put-text-property
 355              (- (point) (length label)) to
 356              'font-lock-face (if comment
 357                        'font-lock-comment-face
 358                      label-face))
 359             (goto-char to))
 360
 361           (insert (if counter (format " (%d) " cnt) "")
 362                   (if comment " LABEL IS COMMENTED OUT " "")
 363                   (if (stringp note) (concat "  " note) "")
 364                   "\n")
 365           (setq to (point))
 366
 367           (when context
 368             (insert context-indent text "\n")
 369             (setq to (point)))
 370           (put-text-property from to :data cell)
 371           (when mouse-face
 372             (put-text-property from (1- to)
 373                                'mouse-face mouse-face))
 374           (goto-char to)))
 375
 376        ((eq (car cell) 'index)
 377         ;; index entry
 378         (when (and index-entries
 379                    (or (eq t index-entries)
 380                        (string= index-entries (nth 1 cell))))
 381           (setq prev-inserted cell)
 382 ;         (if (eq offset 'attention) (setq offset cell))
 383           (setq index-tag (format "<%s>" (nth 1 cell)))
 384           (and font
 385                (put-text-property 0 (length index-tag)
 386                                   'font-lock-face reftex-index-tag-face index-tag))
 387           (insert label-indent index-tag " " (nth 7 cell))
 388
 389           (when font
 390             (setq to (point))
 391             (put-text-property
 392              (- (point) (length (nth 7 cell))) to
 393              'font-lock-face index-face)
 394             (goto-char to))
 395           (insert "\n")
 396           (setq to (point))
 397
 398           (when context
 399             (insert context-indent (nth 2 cell) "\n")
 400             (setq to (point)))
 401           (put-text-property from to :data cell)
 402           (when mouse-face
 403             (put-text-property from (1- to)
 404                                'mouse-face mouse-face))
 405           (goto-char to))))
 406
 407       (if (eq cell here-I-am)
 408           (setq offset 'attention))
 409       (if (and prev-inserted (eq offset 'attention))
 410           (setq offset prev-inserted))
 411       )
 412
 413     (when (reftex-refontify)
 414       ;; we need to fontify the buffer
 415       (reftex-fontify-select-label-buffer buf))
 416     (run-hooks 'reftex-display-copied-context-hook)
 417     offset))
 418
 419 ;;;###autoload
 420 (defun reftex-find-start-point (fallback &rest locations)
 421   ;; Set point to the first available LOCATION.  When a LOCATION is a list,
 422   ;; search for such a :data text property.  When it is an integer,
 423   ;; use is as line number.  FALLBACK is a buffer position used if everything
 424   ;; else  fails.
 425   (catch 'exit
 426     (goto-char (point-min))
 427     (let (loc pos)
 428       (while locations
 429         (setq loc (pop locations))
 430         (cond
 431          ((null loc))
 432          ((listp loc)
 433           (setq pos (text-property-any (point-min) (point-max) :data loc))
 434           (when pos
 435             (goto-char pos)
 436             (throw 'exit t)))
 437          ((integerp loc)
 438           (when (<= loc (count-lines (point-min) (point-max)))
 439             (goto-char (point-min))
 440             (forward-line (1- loc))
 441             (throw 'exit t)))))
 442       (goto-char fallback))))
 443
 444 (defvar reftex-last-data nil)
 445 (defvar reftex-last-line nil)
 446 (defvar reftex-select-marked nil)
 447
 448 ;;;###autoload
 449 (defun reftex-select-item (reftex-select-prompt help-string keymap
 450                                   &optional offset
 451                                   call-back cb-flag)
 452   ;; Select an item, using REFTEX-SELECT-PROMPT.
 453   ;; The function returns a key indicating an exit status, along with a
 454   ;; data structure indicating which item was selected.
 455   ;; HELP-STRING contains help.  KEYMAP is a keymap with the available
 456   ;; selection commands.
 457   ;; OFFSET can be a label list item which will be selected at start.
 458   ;; When it is t, point will start out at the beginning of the buffer.
 459   ;; Any other value will cause restart where last selection left off.
 460   ;; When CALL-BACK is given, it is a function which is called with the index
 461   ;; of the element.
 462   ;; CB-FLAG is the initial value of that flag.
 463   (let (ev reftex-select-data last-data (selection-buffer (current-buffer)))
 464
 465     (setq reftex-select-marked nil)
 466
 467     (setq ev
 468           (catch 'myexit
 469             (save-window-excursion
 470               (setq truncate-lines t)
 471
 472               ;; Find a good starting point
 473               (reftex-find-start-point
 474                (point-min) offset reftex-last-data reftex-last-line)
 475               (beginning-of-line 1)
 476               (set (make-local-variable 'reftex-last-follow-point) (point))
 477
 478       (unwind-protect
 479           (progn
 480             (use-local-map keymap)
 481             (add-hook 'pre-command-hook 'reftex-select-pre-command-hook nil t)
 482             (add-hook 'post-command-hook 'reftex-select-post-command-hook nil t)
 483             (princ reftex-select-prompt)
 484             (set-marker reftex-recursive-edit-marker (point))
 485             ;; XEmacs does not run post-command-hook here
 486             (and (featurep 'xemacs) (run-hooks 'post-command-hook))
 487             (recursive-edit))
 488
 489         (set-marker reftex-recursive-edit-marker nil)
 490         (with-current-buffer selection-buffer
 491           (use-local-map nil)
 492           (remove-hook 'pre-command-hook 'reftex-select-pre-command-hook t)
 493           (remove-hook 'post-command-hook
 494                        'reftex-select-post-command-hook t))
 495         ;; Kill the mark overlays
 496         (mapc (lambda (c) (reftex-delete-overlay (nth 1 c)))
 497               reftex-select-marked)))))
 498
 499     (set (make-local-variable 'reftex-last-line)
 500          (+ (count-lines (point-min) (point)) (if (bolp) 1 0)))
 501     (set (make-local-variable 'reftex-last-data) last-data)
 502     (reftex-kill-buffer "*RefTeX Help*")
 503     (setq reftex-callback-fwd (not reftex-callback-fwd)) ;; ;-)))
 504     (message "")
 505     (list ev reftex-select-data last-data)))
 506
 507 ;; The following variables are all bound dynamically in `reftex-select-item'.
 508 ;; The defvars are here only to silence the byte compiler.
 509
 510 (defvar found-list)
 511 (defvar cb-flag)
 512 (defvar reftex-select-data)
 513 (defvar reftex-select-prompt)
 514 (defvar last-data)
 515 (defvar call-back)
 516 (defvar help-string)
 517 (defvar reftex-refstyle)
 518
 519 ;; The selection commands
 520
 521 (defun reftex-select-pre-command-hook ()
 522   (reftex-unhighlight 1)
 523   (reftex-unhighlight 0))
 524
 525 (defun reftex-select-post-command-hook ()
 526   (let (b e)
 527     (setq reftex-select-data (get-text-property (point) :data))
 528     (setq last-data (or reftex-select-data last-data))
 529
 530     (when (and reftex-select-data cb-flag
 531                (not (equal reftex-last-follow-point (point))))
 532       (setq reftex-last-follow-point (point))
 533       (funcall call-back reftex-select-data reftex-callback-fwd
 534                (not reftex-revisit-to-follow)))
 535     (if reftex-select-data
 536         (setq b (or (previous-single-property-change
 537                      (1+ (point)) :data)
 538                     (point-min))
 539               e (or (next-single-property-change
 540                      (point) :data)
 541                     (point-max)))
 542       (setq b (point) e (point)))
 543     (and (memq reftex-highlight-selection '(cursor both))
 544          (reftex-highlight 1 b e))
 545     (if (or (not (pos-visible-in-window-p b))
 546             (not (pos-visible-in-window-p e)))
 547         (recenter '(4)))
 548     (unless (current-message)
 549       (princ reftex-select-prompt))))
 550
 551 (defun reftex-select-next (&optional arg)
 552   "Move to next selectable item."
 553   (interactive "p")
 554   (setq reftex-callback-fwd t)
 555   (or (eobp) (forward-char 1))
 556   (re-search-forward "^[^. \t\n\r]" nil t arg)
 557   (beginning-of-line 1))
 558 (defun reftex-select-previous (&optional arg)
 559   "Move to previous selectable item."
 560   (interactive "p")
 561   (setq reftex-callback-fwd nil)
 562   (re-search-backward "^[^. \t\n\r]" nil t arg))
 563 (defun reftex-select-jump (arg)
 564   "Jump to a specific section.  E.g. '3 z' jumps to section 3.
 565 Useful for large TOC's."
 566   (interactive "P")
 567   (goto-char (point-min))
 568   (re-search-forward
 569    (concat "^ *" (number-to-string (if (numberp arg) arg 1)) " ")
 570    nil t)
 571   (beginning-of-line))
 572 (defun reftex-select-next-heading (&optional arg)
 573   "Move to next table of contents line."
 574   (interactive "p")
 575   (end-of-line)
 576   (re-search-forward "^ " nil t arg)
 577   (beginning-of-line))
 578 (defun reftex-select-previous-heading (&optional arg)
 579   "Move to previous table of contents line."
 580   (interactive "p")
 581   (re-search-backward "^ " nil t arg))
 582 (defun reftex-select-quit ()
 583   "Abort selection process."
 584   (interactive)
 585   (throw 'myexit nil))
 586 (defun reftex-select-keyboard-quit ()
 587   "Abort selection process."
 588   (interactive)
 589   (throw 'exit t))
 590 (defun reftex-select-jump-to-previous ()
 591   "Jump back to where previous selection process left off."
 592   (interactive)
 593   (let (pos)
 594     (cond
 595      ((and (local-variable-p 'reftex-last-data (current-buffer))
 596            reftex-last-data
 597            (setq pos (text-property-any (point-min) (point-max)
 598                                         :data reftex-last-data)))
 599       (goto-char pos))
 600      ((and (local-variable-p 'reftex-last-line (current-buffer))
 601            (integerp reftex-last-line))
 602       (goto-char (point-min))
 603       (forward-line (1- reftex-last-line)))
 604      (t (ding)))))
 605 (defun reftex-select-toggle-follow ()
 606   "Toggle follow mode:  Other window follows with full context."
 607   (interactive)
 608   (setq reftex-last-follow-point -1)
 609   (setq cb-flag (not cb-flag)))
 610
 611 (defun reftex-select-cycle-ref-style-internal (&optional reverse)
 612   "Cycle through macros used for referencing.
 613 Cycle in reverse order if optional argument REVERSE is non-nil."
 614   (let (list)
 615     (dolist (style (reftex-ref-style-list))
 616       (mapc (lambda (x) (add-to-list 'list (car x) t))
 617             (nth 2 (assoc style reftex-ref-style-alist))))
 618     (when reverse
 619       (setq list (reverse list)))
 620     (setq reftex-refstyle (or (cadr (member reftex-refstyle list)) (car list))))
 621   (force-mode-line-update))
 622
 623 (defun reftex-select-cycle-ref-style-forward ()
 624   "Cycle forward through macros used for referencing."
 625   (interactive)
 626   (reftex-select-cycle-ref-style-internal))
 627
 628 (defun reftex-select-cycle-ref-style-backward ()
 629   "Cycle backward through macros used for referencing."
 630   (interactive)
 631   (reftex-select-cycle-ref-style-internal t))
 632
 633 (defun reftex-select-show-insertion-point ()
 634   "Show the point from where selection was started in another window."
 635   (interactive)
 636   (let ((this-window (selected-window)))
 637     (unwind-protect
 638         (progn
 639           (switch-to-buffer-other-window
 640            (marker-buffer reftex-select-return-marker))
 641           (goto-char (marker-position reftex-select-return-marker))
 642           (recenter '(4)))
 643       (select-window this-window))))
 644 (defun reftex-select-callback ()
 645   "Show full context in another window."
 646   (interactive)
 647   (if reftex-select-data (funcall call-back reftex-select-data reftex-callback-fwd nil) (ding)))
 648 (defun reftex-select-accept ()
 649   "Accept the currently selected item."
 650   (interactive)
 651   (throw 'myexit 'return))
 652 (defun reftex-select-mouse-accept (ev)
 653   "Accept the item at the mouse click."
 654   (interactive "e")
 655   (mouse-set-point ev)
 656   (setq reftex-select-data (get-text-property (point) :data))
 657   (setq last-data (or reftex-select-data last-data))
 658   (throw 'myexit 'return))
 659 (defun reftex-select-read-label ()
 660   "Use minibuffer to read a label to reference, with completion."
 661   (interactive)
 662   (let ((label (completing-read
 663                 "Label: " (symbol-value reftex-docstruct-symbol)
 664                 nil nil reftex-prefix)))
 665     (unless (or (equal label "") (equal label reftex-prefix))
 666       (throw 'myexit label))))
 667 (defun reftex-select-read-cite ()
 668   "Use minibuffer to read a citation key with completion."
 669   (interactive)
 670   (let* ((key (completing-read "Citation key: " found-list))
 671          (entry (assoc key found-list)))
 672     (cond
 673      ((or (null key) (equal key "")))
 674      (entry
 675       (setq reftex-select-data entry)
 676       (setq last-data reftex-select-data)
 677       (throw 'myexit 'return))
 678      (t (throw 'myexit key)))))
 679
 680 (defun reftex-select-mark (&optional separator)
 681   "Mark the entry."
 682   (interactive)
 683   (let* ((data (get-text-property (point) :data))
 684          boe eoe ovl)
 685     (or data (error "No entry to mark at point"))
 686     (if (assq data reftex-select-marked)
 687         (error "Entry is already marked"))
 688     (setq boe (or (previous-single-property-change (1+ (point)) :data)
 689                   (point-min))
 690           eoe (or (next-single-property-change (point) :data) (point-max)))
 691     (setq ovl (reftex-make-overlay boe eoe))
 692     (push (list data ovl separator) reftex-select-marked)
 693     (reftex-overlay-put ovl 'font-lock-face reftex-select-mark-face)
 694     (reftex-overlay-put ovl 'before-string
 695                         (if separator
 696                             (format "*%c%d* " separator
 697                                     (length reftex-select-marked))
 698                           (format "*%d*  " (length reftex-select-marked))))
 699     (message "Entry has mark no. %d" (length reftex-select-marked))))
 700
 701 (defun reftex-select-mark-comma ()
 702   "Mark the entry and store the `comma' separator."
 703   (interactive)
 704   (reftex-select-mark ?,))
 705 (defun reftex-select-mark-to ()
 706   "Mark the entry and store the `to' separator."
 707   (interactive)
 708   (reftex-select-mark ?-))
 709 (defun reftex-select-mark-and ()
 710   "Mark the entry and store `and' to separator."
 711   (interactive)
 712   (reftex-select-mark ?+))
 713
 714 (defun reftex-select-unmark ()
 715   "Unmark the entry."
 716   (interactive)
 717   (let* ((data (get-text-property (point) :data))
 718          (cell (assq data reftex-select-marked))
 719          (ovl (nth 1 cell))
 720          (cnt 0)
 721          sep)
 722     (unless cell
 723       (error "No marked entry at point"))
 724     (and ovl (reftex-delete-overlay ovl))
 725     (setq reftex-select-marked (delq cell reftex-select-marked))
 726     (setq cnt (1+ (length reftex-select-marked)))
 727     (mapc (lambda (c)
 728             (setq sep (nth 2 c))
 729             (reftex-overlay-put (nth 1 c) 'before-string
 730                                 (if sep
 731                                     (format "*%c%d* " sep (decf cnt))
 732                                   (format "*%d*  " (decf cnt)))))
 733           reftex-select-marked)
 734     (message "Entry no longer marked")))
 735
 736 (defun reftex-select-help ()
 737   "Display a summary of the special key bindings."
 738   (interactive)
 739   (with-output-to-temp-buffer "*RefTeX Help*"
 740     (princ help-string))
 741   (reftex-enlarge-to-fit "*RefTeX Help*" t))
 742
 743 (provide 'reftex-sel)
 744
 745 ;;; reftex-sel.el ends here
 746
 747 ;; Local Variables:
 748 ;; generated-autoload-file: "reftex.el"
 749 ;; End: