src/BufferView2.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *
   6  *           Copyright 1995 Matthias Ettrich
   7  *           Copyright 1995-2001 The LyX Team.
   8  *
   9  * ====================================================== */
  10
  11 #include <config.h>
  12
  13 #include "BufferView.h"
  14 #include "buffer.h"
  15 #include "lyxcursor.h"
  16 #include "lyxtext.h"
  17 #include "frontends/LyXView.h"
  18 #include "bufferlist.h"
  19 #include "frontends/screen.h"
  20 #include "LaTeX.h"
  21 #include "BufferView_pimpl.h"
  22 #include "language.h"
  23 #include "gettext.h"
  24 #include "undo_funcs.h"
  25 #include "debug.h"
  26 #include "iterators.h"
  27 #include "lyxlex.h"
  28
  29 #include "frontends/Alert.h"
  30 #include "frontends/Dialogs.h"
  31
  32 #include "insets/insetcommand.h" //ChangeRefs
  33 #include "insets/inseterror.h"
  34
  35 #include "support/FileInfo.h"
  36 #include "support/filetools.h"
  37 #include "support/lyxfunctional.h" //equal_1st_in_pair
  38 #include "support/types.h"
  39 #include "support/lyxalgo.h" // lyx_count
  40
  41 #include <fstream>
  42
  43 extern BufferList bufferlist;
  44
  45 using lyx::pos_type;
  46
  47 using std::pair;
  48 using std::endl;
  49 using std::ifstream;
  50 using std::vector;
  51 using std::find;
  52 using std::count_if;
  53
  54
  55 // Inserts a file into current document
  56 bool BufferView::insertLyXFile(string const & filen)
  57         //
  58         // Copyright CHT Software Service GmbH
  59         // Uwe C. Schroeder
  60         //
  61         // Insert a LyXformat - file into current buffer
  62         //
  63         // Moved from lyx_cb.C (Lgb)
  64 {
  65         if (filen.empty()) return false;
  66
  67         string const fname = MakeAbsPath(filen);
  68
  69         // check if file exist
  70         FileInfo const fi(fname);
  71
  72         if (!fi.readable()) {
  73                 Alert::alert(_("Error!"),
  74                            _("Specified file is unreadable: "),
  75                            MakeDisplayPath(fname, 50));
  76                 return false;
  77         }
  78
  79         beforeChange(text);
  80
  81         ifstream ifs(fname.c_str());
  82         if (!ifs) {
  83                 Alert::alert(_("Error!"),
  84                            _("Cannot open specified file: "),
  85                            MakeDisplayPath(fname, 50));
  86                 return false;
  87         }
  88
  89         int const c = ifs.peek();
  90
  91         LyXLex lex(0, 0);
  92         lex.setStream(ifs);
  93
  94         bool res = true;
  95
  96         if (c == '#') {
  97                 lyxerr[Debug::INFO] << "Will insert file with header" << endl;
  98                 res = buffer()->readFile(lex, text->cursor.par());
  99         } else {
 100                 lyxerr[Debug::INFO] << "Will insert file without header"
 101                                     << endl;
 102                 res = buffer()->readLyXformat2(lex, text->cursor.par());
 103         }
 104
 105         resize();
 106         return res;
 107 }
 108
 109
 110 bool BufferView::removeAutoInsets()
 111 {
 112         // keep track of which pos and par the cursor was on
 113         Paragraph * cursor_par = text->cursor.par();
 114         Paragraph * cursor_par_prev = cursor_par ? cursor_par->previous() : 0;
 115         Paragraph * cursor_par_next = cursor_par ? cursor_par->next() : 0;
 116         pos_type cursor_pos = text->cursor.pos();
 117
 118         bool found = false;
 119
 120         // Trap the deletion of the paragraph the cursor is in.
 121         // Iterate until we find a paragraph that won't be immediately deleted.
 122         // In reality this should mean we only execute the body of the while
 123         // loop once at most.  However for safety we iterate rather than just
 124         // make this an if () conditional.
 125         while ((cursor_par_prev || cursor_par_next)
 126                && text->setCursor(this,
 127                                   cursor_par_prev ? cursor_par_prev : cursor_par_next,
 128                                   0)) {
 129                 // We just removed cursor_par so have to fix the "cursor"
 130                 if (cursor_par_prev) {
 131                         // '.' = cursor_par
 132                         //  a -> a.
 133                         // .
 134                         cursor_par = cursor_par_prev;
 135                         cursor_pos = cursor_par->size();
 136                 } else {
 137                         // .  -> .a
 138                         //  a
 139                         cursor_par = cursor_par_next;
 140                         cursor_pos = 0;
 141                 }
 142                 cursor_par_prev = cursor_par->previous();
 143                 cursor_par_next = cursor_par->next();
 144         }
 145
 146         // Iterate through the paragraphs removing autoDelete insets as we go.
 147         // If the paragraph ends up empty after all the autoDelete insets are
 148         // removed that paragraph will be removed by the next setCursor() call.
 149         ParIterator it = buffer()->par_iterator_begin();
 150         ParIterator end = buffer()->par_iterator_end();
 151         for (; it != end; ++it) {
 152                 Paragraph * par = *it;
 153                 Paragraph * par_prev = par ? par->previous() : 0;
 154                 bool removed = false;
 155
 156                 if (text->setCursor(this, par, 0)
 157                     && cursor_par == par_prev) {
 158                         // The previous setCursor line was deleted and that
 159                         // was the cursor_par line.  This can only happen if an
 160                         // error box was the sole item on cursor_par.
 161                         // It is possible for cursor_par_prev to be stray if
 162                         // the line it pointed to only had a error box on it
 163                         // so we have to set it to a known correct value.
 164                         // This is often the same value it already had.
 165                         cursor_par_prev = par->previous();
 166                         if (cursor_par_prev) {
 167                                 // '|' = par, '.' = cursor_par, 'E' = error box
 168                                 // First step below may occur before while{}
 169                                 //  a    |a      a     a     a.
 170                                 //  E -> .E -> |.E -> .  -> |b
 171                                 // .      b      b    |b
 172                                 //  b
 173                                 cursor_par = cursor_par_prev;
 174                                 cursor_pos = cursor_par_prev->size();
 175                                 cursor_par_prev = cursor_par->previous();
 176                                 // cursor_par_next remains the same
 177                         } else if (cursor_par_next) {
 178                                 // First step below may occur before while{}
 179                                 // .
 180                                 //  E -> |.E -> |.  -> . -> .|a
 181                                 //  a      a      a    |a
 182                                 cursor_par = cursor_par_next;
 183                                 cursor_pos = 0;
 184                                 // cursor_par_prev remains unset
 185                                 cursor_par_next = cursor_par->next();
 186                         } else {
 187                                 // I can't find a way to trigger this
 188                                 // so it should be unreachable code
 189                                 // unless the buffer is corrupted.
 190                                 lyxerr << "BufferView::removeAutoInsets() is bad\n";
 191                         }
 192                 }
 193
 194                 InsetList::iterator pit = par->insetlist.begin();
 195                 InsetList::iterator pend = par->insetlist.end();
 196
 197                 while (pit != pend) {
 198                         if (pit.getInset()->autoDelete()) {
 199                                 removed = true;
 200                                 pos_type const pos = pit.getPos();
 201
 202                                 par->erase(pos);
 203                                 // We just invalidated par's inset iterators so
 204                                 // we get the next valid iterator position
 205                                 pit = par->insetlist.insetIterator(pos);
 206                                 // and ensure we have a valid end iterator.
 207                                 pend = par->insetlist.end();
 208
 209                                 if (cursor_par == par) {
 210                                         // update the saved cursor position
 211                                         if (cursor_pos > pos)
 212                                                 --cursor_pos;
 213                                 }
 214                         } else {
 215                                 ++pit;
 216                         }
 217                 }
 218                 if (removed) {
 219                         found = true;
 220                         text->redoParagraph(this);
 221                 }
 222         }
 223
 224         // It is possible that the last line is empty if it was cursor_par
 225         // and/or only had an error inset on it.  So we set the cursor to the
 226         // start of the doc to force its removal and ensure a valid saved cursor
 227         if (text->setCursor(this, text->ownerParagraph(), 0)
 228             && 0 == cursor_par_next) {
 229                 cursor_par = cursor_par_prev;
 230                 cursor_pos = cursor_par->size();
 231         } else if (cursor_pos > cursor_par->size()) {
 232                 // Some C-Enter lines were removed by the setCursor call which
 233                 // then invalidated cursor_pos. It could still be "wrong" because
 234                 // the cursor may appear to have jumped but since we collapsed
 235                 // some C-Enter lines this should be a reasonable compromise.
 236                 cursor_pos = cursor_par->size();
 237         }
 238
 239         // restore the original cursor in its corrected location.
 240         text->setCursorIntern(this, cursor_par, cursor_pos);
 241
 242         return found;
 243 }
 244
 245
 246 void BufferView::insertErrors(TeXErrors & terr)
 247 {
 248         // Save the cursor position
 249         LyXCursor cursor = text->cursor;
 250
 251         TeXErrors::Errors::const_iterator cit = terr.begin();
 252         TeXErrors::Errors::const_iterator end = terr.end();
 253         for (; cit != end; ++cit) {
 254                 string const desctext(cit->error_desc);
 255                 string const errortext(cit->error_text);
 256                 string const msgtxt = desctext + '\n' + errortext;
 257                 int const errorrow = cit->error_in_line;
 258
 259                 // Insert error string for row number
 260                 int tmpid = -1;
 261                 int tmppos = -1;
 262
 263                 if (buffer()->texrow.getIdFromRow(errorrow, tmpid, tmppos)) {
 264                         buffer()->texrow.increasePos(tmpid, tmppos);
 265                 }
 266
 267                 Paragraph * texrowpar = 0;
 268
 269                 if (tmpid == -1) {
 270                         texrowpar = text->ownerParagraph();
 271                         tmppos = 0;
 272                 } else {
 273                         texrowpar = buffer()->getParFromID(tmpid);
 274                 }
 275
 276                 if (texrowpar == 0)
 277                         continue;
 278
 279                 freezeUndo();
 280                 InsetError * new_inset = new InsetError(msgtxt);
 281                 text->setCursorIntern(this, texrowpar, tmppos);
 282                 text->insertInset(this, new_inset);
 283                 text->fullRebreak(this);
 284                 unFreezeUndo();
 285         }
 286         // Restore the cursor position
 287         text->setCursorIntern(this, cursor.par(), cursor.pos());
 288 }
 289
 290
 291 void BufferView::setCursorFromRow(int row)
 292 {
 293         int tmpid = -1;
 294         int tmppos = -1;
 295
 296         buffer()->texrow.getIdFromRow(row, tmpid, tmppos);
 297
 298         Paragraph * texrowpar;
 299
 300         if (tmpid == -1) {
 301                 texrowpar = text->ownerParagraph();
 302                 tmppos = 0;
 303         } else {
 304                 texrowpar = buffer()->getParFromID(tmpid);
 305         }
 306         text->setCursor(this, texrowpar, tmppos);
 307 }
 308
 309
 310 bool BufferView::insertInset(Inset * inset, string const & lout)
 311 {
 312         return pimpl_->insertInset(inset, lout);
 313 }
 314
 315
 316 /* This is also a buffer property (ale) */
 317 // Not so sure about that. a goto Label function can not be buffer local, just
 318 // think how this will work in a multiwindo/buffer environment, all the
 319 // cursors in all the views showing this buffer will move. (Lgb)
 320 // OK, then no cursor action should be allowed in buffer. (ale)
 321 bool BufferView::gotoLabel(string const & label)
 322
 323 {
 324         for (Buffer::inset_iterator it = buffer()->inset_iterator_begin();
 325              it != buffer()->inset_iterator_end(); ++it) {
 326                 vector<string> labels = (*it)->getLabelList();
 327                 if (find(labels.begin(),labels.end(),label)
 328                      != labels.end()) {
 329                         beforeChange(text);
 330                         text->setCursor(this, it.getPar(), it.getPos());
 331                         text->selection.cursor = text->cursor;
 332                         update(text, BufferView::SELECT|BufferView::FITCUR);
 333                         return true;
 334                 }
 335         }
 336         return false;
 337 }
 338
 339
 340 void BufferView::menuUndo()
 341 {
 342         if (!available())
 343                 return;
 344
 345         owner()->message(_("Undo"));
 346         hideCursor();
 347         beforeChange(text);
 348         update(text, BufferView::SELECT|BufferView::FITCUR);
 349         if (!textUndo(this))
 350                 owner()->message(_("No further undo information"));
 351         else
 352                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 353         switchKeyMap();
 354 }
 355
 356
 357 void BufferView::menuRedo()
 358 {
 359         if (!available())
 360                 return;
 361
 362         owner()->message(_("Redo"));
 363         hideCursor();
 364         beforeChange(text);
 365         update(text, BufferView::SELECT|BufferView::FITCUR);
 366         if (!textRedo(this))
 367                 owner()->message(_("No further redo information"));
 368         else
 369                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 370         switchKeyMap();
 371 }
 372
 373
 374 void BufferView::copyEnvironment()
 375 {
 376         if (available()) {
 377                 text->copyEnvironmentType();
 378                 owner()->message(_("Paragraph environment type copied"));
 379         }
 380 }
 381
 382
 383 void BufferView::pasteEnvironment()
 384 {
 385         if (available()) {
 386                 text->pasteEnvironmentType(this);
 387                 owner()->message(_("Paragraph environment type set"));
 388                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 389         }
 390 }
 391
 392
 393 void BufferView::copy()
 394 {
 395         if (available()) {
 396                 getLyXText()->copySelection(this);
 397                 owner()->message(_("Copy"));
 398         }
 399 }
 400
 401
 402 void BufferView::cut(bool realcut)
 403 {
 404         if (available()) {
 405                 hideCursor();
 406                 update(text, BufferView::SELECT|BufferView::FITCUR);
 407                 text->cutSelection(this, true, realcut);
 408                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 409                 owner()->message(_("Cut"));
 410         }
 411 }
 412
 413
 414 void BufferView::paste()
 415 {
 416         if (!available())
 417                 return;
 418
 419         owner()->message(_("Paste"));
 420
 421         hideCursor();
 422         // clear the selection
 423         toggleSelection();
 424         text->clearSelection();
 425         update(text, BufferView::SELECT|BufferView::FITCUR);
 426
 427         // paste
 428         text->pasteSelection(this);
 429         // bug 393
 430         text->clearSelection();
 431         update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 432 // why fake a selection only I think it should be a real one and not only
 433 // a painted one (Jug 20020318).
 434 #if 0
 435         // clear the selection
 436         toggleSelection();
 437         text->clearSelection();
 438         update(text, BufferView::SELECT|BufferView::FITCUR);
 439 #endif
 440 }
 441
 442
 443 /* these functions are for the spellchecker */
 444 WordLangTuple const BufferView::nextWord(float & value)
 445 {
 446         if (!available()) {
 447                 value = 1;
 448                 return WordLangTuple();
 449         }
 450
 451         return text->selectNextWordToSpellcheck(this, value);
 452 }
 453
 454
 455 void BufferView::selectLastWord()
 456 {
 457         if (!available()) return;
 458
 459         LyXCursor cur = text->selection.cursor;
 460         hideCursor();
 461         beforeChange(text);
 462         text->selection.cursor = cur;
 463         text->selectSelectedWord(this);
 464         toggleSelection(false);
 465         update(text, BufferView::SELECT|BufferView::FITCUR);
 466 }
 467
 468
 469 void BufferView::endOfSpellCheck()
 470 {
 471         if (!available()) return;
 472
 473         hideCursor();
 474         beforeChange(text);
 475         text->selectSelectedWord(this);
 476         text->clearSelection();
 477         update(text, BufferView::SELECT|BufferView::FITCUR);
 478 }
 479
 480
 481 void BufferView::replaceWord(string const & replacestring)
 482 {
 483         if (!available()) return;
 484
 485         LyXText * tt = getLyXText();
 486         hideCursor();
 487         update(tt, BufferView::SELECT|BufferView::FITCUR);
 488
 489         /* clear the selection (if there is any) */
 490         toggleSelection(false);
 491         update(tt, BufferView::SELECT|BufferView::FITCUR);
 492
 493         /* clear the selection (if there is any) */
 494         toggleSelection(false);
 495         tt->replaceSelectionWithString(this, replacestring);
 496
 497         tt->setSelectionOverString(this, replacestring);
 498
 499         // Go back so that replacement string is also spellchecked
 500         for (string::size_type i = 0; i < replacestring.length() + 1; ++i) {
 501                 tt->cursorLeft(this);
 502         }
 503         update(tt, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 504 }
 505 // End of spellchecker stuff
 506
 507
 508 bool BufferView::lockInset(UpdatableInset * inset)
 509 {
 510         if (!inset)
 511                 return false;
 512         // don't relock if we're already locked
 513         if (theLockingInset() == inset)
 514                 return true;
 515         if (!theLockingInset()) {
 516                 // first check if it's the inset under the cursor we want lock
 517                 // should be most of the time
 518                 char const c = text->cursor.par()->getChar(text->cursor.pos());
 519                 if (c == Paragraph::META_INSET) {
 520                         Inset * in = text->cursor.par()->getInset(text->cursor.pos());
 521                         if (inset == in) {
 522                                 theLockingInset(inset);
 523                                 return true;
 524                         }
 525                 }
 526                 // Then do a deep look of the inset and lock the right one
 527                 Paragraph * par = &*(buffer()->paragraphs.begin());
 528                 int const id = inset->id();
 529                 while (par) {
 530                         InsetList::iterator it =
 531                                 par->insetlist.begin();
 532                         InsetList::iterator const end =
 533                                 par->insetlist.end();
 534                         for (; it != end; ++it) {
 535                                 if (it.getInset() == inset) {
 536                                         text->setCursorIntern(this, par, it.getPos());
 537                                         theLockingInset(inset);
 538                                         return true;
 539                                 }
 540                                 if (it.getInset()->getInsetFromID(id)) {
 541                                         text->setCursorIntern(this, par, it.getPos());
 542                                         it.getInset()->edit(this);
 543                                         return theLockingInset()->lockInsetInInset(this, inset);
 544                                 }
 545                         }
 546                         par = par->next();
 547                 }
 548                 return false;
 549         }
 550         return theLockingInset()->lockInsetInInset(this, inset);
 551 }
 552
 553
 554 void BufferView::showLockedInsetCursor(int x, int y, int asc, int desc)
 555 {
 556         if (available() && theLockingInset() && !theLockingInset()->nodraw()) {
 557                 LyXCursor cursor = text->cursor;
 558                 Inset * locking_inset = theLockingInset()->getLockingInset();
 559
 560                 if ((cursor.pos() - 1 >= 0) &&
 561                     cursor.par()->isInset(cursor.pos() - 1) &&
 562                     (cursor.par()->getInset(cursor.pos() - 1) ==
 563                      locking_inset))
 564                         text->setCursor(this, cursor,
 565                                         cursor.par(), cursor.pos() - 1);
 566                 LyXScreen::Cursor_Shape shape = LyXScreen::BAR_SHAPE;
 567                 LyXText * txt = getLyXText();
 568                 if (locking_inset->isTextInset() &&
 569                     locking_inset->lyxCode() != Inset::ERT_CODE &&
 570                     (txt->real_current_font.language() !=
 571                      buffer()->params.language
 572                      || txt->real_current_font.isVisibleRightToLeft()
 573                      != buffer()->params.language->RightToLeft()))
 574                         shape = (txt->real_current_font.isVisibleRightToLeft())
 575                                 ? LyXScreen::REVERSED_L_SHAPE
 576                                 : LyXScreen::L_SHAPE;
 577                 y += cursor.iy() + theLockingInset()->insetInInsetY();
 578                 screen().showManualCursor(text, x, y, asc, desc,
 579                                                   shape);
 580         }
 581 }
 582
 583
 584 void BufferView::hideLockedInsetCursor()
 585 {
 586         if (theLockingInset() && available()) {
 587                 screen().hideCursor();
 588         }
 589 }
 590
 591
 592 bool BufferView::fitLockedInsetCursor(int x, int y, int asc, int desc)
 593 {
 594         if (theLockingInset() && available()) {
 595                 y += text->cursor.iy() + theLockingInset()->insetInInsetY();
 596                 if (screen().fitManualCursor(this, text, x, y, asc, desc)) {
 597                         updateScrollbar();
 598                         return true;
 599                 }
 600         }
 601         return false;
 602 }
 603
 604
 605 int BufferView::unlockInset(UpdatableInset * inset)
 606 {
 607         if (!inset)
 608                 return 0;
 609         if (inset && theLockingInset() == inset) {
 610                 inset->insetUnlock(this);
 611                 theLockingInset(0);
 612                 // make sure we update the combo !
 613                 owner()->setLayout(getLyXText()->cursor.par()->layout()->name());
 614                 // Tell the paragraph dialog that we changed paragraph
 615                 owner()->getDialogs()->updateParagraph();
 616                 finishUndo();
 617                 return 0;
 618         } else if (inset && theLockingInset() &&
 619                    theLockingInset()->unlockInsetInInset(this, inset)) {
 620                 // Tell the paragraph dialog that we changed paragraph
 621                 owner()->getDialogs()->updateParagraph();
 622                 // owner inset has updated the layout combo
 623                 finishUndo();
 624                 return 0;
 625         }
 626         return bufferlist.unlockInset(inset);
 627 }
 628
 629
 630 void BufferView::lockedInsetStoreUndo(Undo::undo_kind kind)
 631 {
 632         if (!theLockingInset())
 633                 return; // shouldn't happen
 634         if (kind == Undo::EDIT) // in this case insets would not be stored!
 635                 kind = Undo::FINISH;
 636         setUndo(this, kind,
 637                 text->cursor.par(),
 638                 text->cursor.par()->next());
 639 }
 640
 641
 642 void BufferView::updateInset(Inset * inset, bool mark_dirty)
 643 {
 644         pimpl_->updateInset(inset, mark_dirty);
 645 }
 646
 647
 648 bool BufferView::ChangeInsets(Inset::Code code,
 649                               string const & from, string const & to)
 650 {
 651         bool need_update = false;
 652         LyXCursor cursor = text->cursor;
 653         LyXCursor tmpcursor = cursor;
 654         cursor.par(tmpcursor.par());
 655         cursor.pos(tmpcursor.pos());
 656
 657         ParIterator end = buffer()->par_iterator_end();
 658         for (ParIterator it = buffer()->par_iterator_begin();
 659              it != end; ++it) {
 660                 Paragraph * par = *it;
 661                 bool changed_inset = false;
 662                 for (InsetList::iterator it2 = par->insetlist.begin();
 663                      it2 != par->insetlist.end(); ++it2) {
 664                         if (it2.getInset()->lyxCode() == code) {
 665                                 InsetCommand * inset = static_cast<InsetCommand *>(it2.getInset());
 666                                 if (inset->getContents() == from) {
 667                                         inset->setContents(to);
 668                                         changed_inset = true;
 669                                 }
 670                         }
 671                 }
 672                 if (changed_inset) {
 673                         need_update = true;
 674
 675                         // FIXME
 676
 677                         // The test it.size()==1 was needed to prevent crashes.
 678                         // How to set the cursor corretly when it.size()>1 ??
 679                         if (it.size() == 1) {
 680                                 text->setCursorIntern(this, par, 0);
 681                                 text->redoParagraphs(this, text->cursor,
 682                                                      text->cursor.par()->next());
 683                                 text->fullRebreak(this);
 684                         }
 685                 }
 686         }
 687         text->setCursorIntern(this, cursor.par(), cursor.pos());
 688         return need_update;
 689 }
 690
 691
 692 bool BufferView::ChangeRefsIfUnique(string const & from, string const & to)
 693 {
 694         // Check if the label 'from' appears more than once
 695         vector<string> labels = buffer()->getLabelList();
 696
 697         if (lyx::count(labels.begin(), labels.end(), from) > 1)
 698                 return false;
 699
 700         return ChangeInsets(Inset::REF_CODE, from, to);
 701 }
 702
 703
 704 bool BufferView::ChangeCitationsIfUnique(string const & from,
 705                                          string const & to)
 706 {
 707         typedef pair<string, string> StringPair;
 708
 709         vector<StringPair> keys = buffer()->getBibkeyList();
 710         if (count_if(keys.begin(), keys.end(),
 711                      lyx::equal_1st_in_pair<StringPair>(from))
 712             > 1)
 713                 return false;
 714
 715         return ChangeInsets(Inset::CITE_CODE, from, to);
 716 }
 717
 718
 719 UpdatableInset * BufferView::theLockingInset() const
 720 {
 721         // If NULL is not allowed we should put an Assert here. (Lgb)
 722         if (text)
 723                 return text->the_locking_inset;
 724         return 0;
 725 }
 726
 727
 728 void BufferView::theLockingInset(UpdatableInset * inset)
 729 {
 730         text->the_locking_inset = inset;
 731 }
 732
 733
 734 LyXText * BufferView::getLyXText() const
 735 {
 736         if (theLockingInset()) {
 737                 LyXText * txt = theLockingInset()->getLyXText(this, true);
 738                 if (txt)
 739                         return txt;
 740         }
 741         return text;
 742 }
 743
 744
 745 LyXText * BufferView::getParentText(Inset * inset) const
 746 {
 747         if (inset->owner()) {
 748                 LyXText * txt = inset->getLyXText(this);
 749                 inset = inset->owner();
 750                 while (inset && inset->getLyXText(this) == txt)
 751                         inset = inset->owner();
 752                 if (inset)
 753                         return inset->getLyXText(this);
 754         }
 755         return text;
 756 }
 757
 758
 759 Language const * BufferView::getParentLanguage(Inset * inset) const
 760 {
 761         LyXText * text = getParentText(inset);
 762         return text->cursor.par()->getFontSettings(buffer()->params,
 763                                                    text->cursor.pos()).language();
 764 }