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 "LyXView.h"
  18 #include "bufferlist.h"
  19 #include "lyxscreen.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
  28 #include "frontends/Alert.h"
  29
  30 #include "insets/insetcommand.h" //ChangeRefs
  31 #include "insets/inseterror.h"
  32
  33 #include "support/FileInfo.h"
  34 #include "support/filetools.h"
  35 #include "support/lyxfunctional.h" //equal_1st_in_pair
  36 #include "support/types.h"
  37 #include "support/lyxalgo.h" // lyx_count
  38
  39 #include <fstream>
  40
  41 extern BufferList bufferlist;
  42
  43 using lyx::pos_type;
  44
  45 using std::pair;
  46 using std::endl;
  47 using std::ifstream;
  48 using std::vector;
  49 using std::find;
  50 using std::count_if;
  51
  52
  53 // Inserts a file into current document
  54 bool BufferView::insertLyXFile(string const & filen)
  55         //
  56         // Copyright CHT Software Service GmbH
  57         // Uwe C. Schroeder
  58         //
  59         // Insert a Lyxformat - file into current buffer
  60         //
  61         // Moved from lyx_cb.C (Lgb)
  62 {
  63         if (filen.empty()) return false;
  64
  65         string const fname = MakeAbsPath(filen);
  66
  67         // check if file exist
  68         FileInfo const fi(fname);
  69
  70         if (!fi.readable()) {
  71                 Alert::alert(_("Error!"),
  72                            _("Specified file is unreadable: "),
  73                            MakeDisplayPath(fname, 50));
  74                 return false;
  75         }
  76
  77         beforeChange(text);
  78
  79         ifstream ifs(fname.c_str());
  80         if (!ifs) {
  81                 Alert::alert(_("Error!"),
  82                            _("Cannot open specified file: "),
  83                            MakeDisplayPath(fname, 50));
  84                 return false;
  85         }
  86
  87         int const c = ifs.peek();
  88
  89         LyXLex lex(0, 0);
  90         lex.setStream(ifs);
  91
  92         bool res = true;
  93
  94         if (c == '#') {
  95                 lyxerr[Debug::INFO] << "Will insert file with header" << endl;
  96                 res = buffer()->readFile(lex, text->cursor.par());
  97         } else {
  98                 lyxerr[Debug::INFO] << "Will insert file without header"
  99                                     << endl;
 100                 res = buffer()->readLyXformat2(lex, text->cursor.par());
 101         }
 102
 103         resize();
 104         return res;
 105 }
 106
 107
 108 bool BufferView::removeAutoInsets()
 109 {
 110         Paragraph * cur_par = text->cursor.par();
 111         Paragraph * cur_par_prev = cur_par ? cur_par->previous() : 0;
 112         Paragraph * cur_par_next = cur_par ? cur_par->next() : 0;
 113         pos_type cur_pos = text->cursor.pos();
 114
 115         bool found = false;
 116
 117         // Trap the deletion of the paragraph the cursor is in.
 118         // Iterate until we find a paragraph that won't be immediately deleted.
 119         // In reality this should mean we only execute the body of the while
 120         // loop once at most.  However for safety we iterate rather than just
 121         // make this an if () conditional.
 122         while ((cur_par_prev || cur_par_next)
 123                && text->setCursor(this,
 124                                   cur_par_prev ? cur_par_prev : cur_par_next,
 125                                   0)) {
 126                 // We just removed cur_par so have to fix the "cursor"
 127                 if (cur_par_prev) {
 128                         // '.' = cur_par
 129                         //  a -> a.
 130                         // .
 131                         cur_par = cur_par_prev;
 132                         cur_pos = cur_par->size();
 133                 } else {
 134                         // .  -> .a
 135                         //  a
 136                         cur_par = cur_par_next;
 137                         cur_pos = 0;
 138                 }
 139                 cur_par_prev = cur_par->previous();
 140                 cur_par_next = cur_par->next();
 141         }
 142
 143         ParIterator it = buffer()->par_iterator_begin();
 144         ParIterator end = buffer()->par_iterator_end();
 145         for (; it != end; ++it) {
 146                 Paragraph * par = *it;
 147                 Paragraph * par_prev = par ? par->previous() : 0;
 148                 bool removed = false;
 149
 150                 if (text->setCursor(this, par, 0)
 151                     && cur_par == par_prev) {
 152                         // The previous setCursor line was deleted and that
 153                         // was the cur_par line.  This can only happen if an
 154                         // error box was the sole item on cur_par.
 155                         // It is possible for cur_par_prev to be stray if
 156                         // the line it pointed to only had a error box on it
 157                         // so we have to set it to a known correct value.
 158                         // This is often the same value it already had.
 159                         cur_par_prev = par->previous();
 160                         if (cur_par_prev) {
 161                                 // '|' = par, '.' = cur_par, 'E' = error box
 162                                 // First step below may occur before while{}
 163                                 //  a    |a      a     a     a.
 164                                 //  E -> .E -> |.E -> .  -> |b
 165                                 // .      b      b    |b
 166                                 //  b
 167                                 cur_par = cur_par_prev;
 168                                 cur_pos = cur_par_prev->size();
 169                                 cur_par_prev = cur_par->previous();
 170                                 // cur_par_next remains the same
 171                         } else if (cur_par_next) {
 172                                 // First step below may occur before while{}
 173                                 // .
 174                                 //  E -> |.E -> |.  -> . -> .|a
 175                                 //  a      a      a    |a
 176                                 cur_par = cur_par_next;
 177                                 cur_pos = 0;
 178                                 // cur_par_prev remains unset
 179                                 cur_par_next = cur_par->next();
 180                         } else {
 181                                 // I can't find a way to trigger this
 182                                 // so it should be unreachable code
 183                                 // unless the buffer is corrupted.
 184                                 lyxerr << "BufferView::removeAutoInsets() is bad\n";
 185                         }
 186                 }
 187
 188                 Paragraph::inset_iterator pit = par->inset_iterator_begin();
 189                 Paragraph::inset_iterator pend = par->inset_iterator_end();
 190                 while (pit != pend) {
 191                         if (pit->autoDelete()) {
 192                                 removed = true;
 193                                 pos_type const pos = pit.getPos();
 194
 195                                 par->erase(pos);
 196                                 // get the next valid iterator position
 197                                 pit = par->InsetIterator(pos);
 198                                 // ensure we have a valid end iterator
 199                                 pend = par->inset_iterator_end();
 200
 201                                 if (cur_par == par) {
 202                                         if (cur_pos > pos)
 203                                                 --cur_pos;
 204                                 }
 205                         } else {
 206                                 ++pit;
 207                         }
 208                 }
 209                 if (removed) {
 210                         found = true;
 211                         text->redoParagraph(this);
 212                 }
 213         }
 214
 215         // It is possible that the last line is empty if it was cur_par and/or
 216         // only had an error inset on it.
 217         if (text->setCursor(this, text->ownerParagraph(), 0)
 218             && 0 == cur_par_next) {
 219                 cur_par = cur_par_prev;
 220                 cur_pos = cur_par->size();
 221         } else if (cur_pos > cur_par->size()) {
 222                 // Some C-Enter lines were removed by the setCursor call which
 223                 // then invalidated cur_pos. It could still be "wrong" because
 224                 // the cursor may appear to have jumped but since we collapsed
 225                 // some C-Enter lines this should be a reasonable compromise.
 226                 cur_pos = cur_par->size();
 227         }
 228
 229         text->setCursorIntern(this, cur_par, cur_pos);
 230
 231         return found;
 232 }
 233
 234
 235 void BufferView::insertErrors(TeXErrors & terr)
 236 {
 237         // Save the cursor position
 238         LyXCursor cursor = text->cursor;
 239
 240         TeXErrors::Errors::const_iterator cit = terr.begin();
 241         TeXErrors::Errors::const_iterator end = terr.end();
 242         for (; cit != end; ++cit) {
 243                 string const desctext(cit->error_desc);
 244                 string const errortext(cit->error_text);
 245                 string const msgtxt = desctext + '\n' + errortext;
 246                 int const errorrow = cit->error_in_line;
 247
 248                 // Insert error string for row number
 249                 int tmpid = -1;
 250                 int tmppos = -1;
 251
 252                 if (buffer()->texrow.getIdFromRow(errorrow, tmpid, tmppos)) {
 253                         buffer()->texrow.increasePos(tmpid, tmppos);
 254                 }
 255
 256                 Paragraph * texrowpar = 0;
 257
 258                 if (tmpid == -1) {
 259                         texrowpar = text->ownerParagraph();
 260                         tmppos = 0;
 261                 } else {
 262                         texrowpar = buffer()->getParFromID(tmpid);
 263                 }
 264
 265                 if (texrowpar == 0)
 266                         continue;
 267
 268                 InsetError * new_inset = new InsetError(msgtxt);
 269                 text->setCursorIntern(this, texrowpar, tmppos);
 270                 text->insertInset(this, new_inset);
 271                 text->fullRebreak(this);
 272         }
 273         // Restore the cursor position
 274         text->setCursorIntern(this, cursor.par(), cursor.pos());
 275 }
 276
 277
 278 void BufferView::setCursorFromRow(int row)
 279 {
 280         int tmpid = -1;
 281         int tmppos = -1;
 282
 283         buffer()->texrow.getIdFromRow(row, tmpid, tmppos);
 284
 285         Paragraph * texrowpar;
 286
 287         if (tmpid == -1) {
 288                 texrowpar = text->ownerParagraph();
 289                 tmppos = 0;
 290         } else {
 291                 texrowpar = buffer()->getParFromID(tmpid);
 292         }
 293         text->setCursor(this, texrowpar, tmppos);
 294 }
 295
 296
 297 bool BufferView::insertInset(Inset * inset, string const & lout)
 298 {
 299         return pimpl_->insertInset(inset, lout);
 300 }
 301
 302
 303 /* This is also a buffer property (ale) */
 304 // Not so sure about that. a goto Label function can not be buffer local, just
 305 // think how this will work in a multiwindo/buffer environment, all the
 306 // cursors in all the views showing this buffer will move. (Lgb)
 307 // OK, then no cursor action should be allowed in buffer. (ale)
 308 bool BufferView::gotoLabel(string const & label)
 309
 310 {
 311         for (Buffer::inset_iterator it = buffer()->inset_iterator_begin();
 312              it != buffer()->inset_iterator_end(); ++it) {
 313                 vector<string> labels = (*it)->getLabelList();
 314                 if (find(labels.begin(),labels.end(),label)
 315                      != labels.end()) {
 316                         beforeChange(text);
 317                         text->setCursor(this, it.getPar(), it.getPos());
 318                         text->selection.cursor = text->cursor;
 319                         update(text, BufferView::SELECT|BufferView::FITCUR);
 320                         return true;
 321                 }
 322         }
 323         return false;
 324 }
 325
 326
 327 void BufferView::menuUndo()
 328 {
 329         if (available()) {
 330                 owner()->message(_("Undo"));
 331                 hideCursor();
 332                 beforeChange(text);
 333                 update(text, BufferView::SELECT|BufferView::FITCUR);
 334                 if (!textUndo(this))
 335                         owner()->message(_("No further undo information"));
 336                 else
 337                         update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 338                 setState();
 339         }
 340 }
 341
 342
 343 void BufferView::menuRedo()
 344 {
 345 #if 0 // this should not be here (Jug 20011206)
 346         if (theLockingInset()) {
 347                 owner()->message(_("Redo not yet supported in math mode"));
 348                 return;
 349         }
 350 #endif
 351
 352         if (available()) {
 353                 owner()->message(_("Redo"));
 354                 hideCursor();
 355                 beforeChange(text);
 356                 update(text, BufferView::SELECT|BufferView::FITCUR);
 357                 if (!textRedo(this))
 358                         owner()->message(_("No further redo information"));
 359                 else
 360                         update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 361                 setState();
 362         }
 363 }
 364
 365
 366 void BufferView::copyEnvironment()
 367 {
 368         if (available()) {
 369                 text->copyEnvironmentType();
 370                 owner()->message(_("Paragraph environment type copied"));
 371         }
 372 }
 373
 374
 375 void BufferView::pasteEnvironment()
 376 {
 377         if (available()) {
 378                 text->pasteEnvironmentType(this);
 379                 owner()->message(_("Paragraph environment type set"));
 380                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 381         }
 382 }
 383
 384
 385 void BufferView::copy()
 386 {
 387         if (available()) {
 388                 text->copySelection(this);
 389                 owner()->message(_("Copy"));
 390         }
 391 }
 392
 393
 394 void BufferView::cut(bool realcut)
 395 {
 396         if (available()) {
 397                 hideCursor();
 398                 update(text, BufferView::SELECT|BufferView::FITCUR);
 399                 text->cutSelection(this, true, realcut);
 400                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 401                 owner()->message(_("Cut"));
 402         }
 403 }
 404
 405
 406 void BufferView::paste()
 407 {
 408         if (!available()) return;
 409
 410         owner()->message(_("Paste"));
 411
 412         hideCursor();
 413         // clear the selection
 414         toggleSelection();
 415         text->clearSelection();
 416         update(text, BufferView::SELECT|BufferView::FITCUR);
 417
 418         // paste
 419         text->pasteSelection(this);
 420         update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 421
 422         // clear the selection
 423         toggleSelection();
 424         text->clearSelection();
 425         update(text, BufferView::SELECT|BufferView::FITCUR);
 426 }
 427
 428
 429 /* these functions are for the spellchecker */
 430 string const BufferView::nextWord(float & value)
 431 {
 432         if (!available()) {
 433                 value = 1;
 434                 return string();
 435         }
 436
 437         return text->selectNextWordToSpellcheck(this, value);
 438 }
 439
 440
 441 void BufferView::selectLastWord()
 442 {
 443         if (!available()) return;
 444
 445         LyXCursor cur = text->selection.cursor;
 446         hideCursor();
 447         beforeChange(text);
 448         text->selection.cursor = cur;
 449         text->selectSelectedWord(this);
 450         toggleSelection(false);
 451         update(text, BufferView::SELECT|BufferView::FITCUR);
 452 }
 453
 454
 455 void BufferView::endOfSpellCheck()
 456 {
 457         if (!available()) return;
 458
 459         hideCursor();
 460         beforeChange(text);
 461         text->selectSelectedWord(this);
 462         text->clearSelection();
 463         update(text, BufferView::SELECT|BufferView::FITCUR);
 464 }
 465
 466
 467 void BufferView::replaceWord(string const & replacestring)
 468 {
 469         if (!available()) return;
 470
 471         LyXText * tt = getLyXText();
 472         hideCursor();
 473         update(tt, BufferView::SELECT|BufferView::FITCUR);
 474
 475         /* clear the selection (if there is any) */
 476         toggleSelection(false);
 477         update(tt, BufferView::SELECT|BufferView::FITCUR);
 478
 479         /* clear the selection (if there is any) */
 480         toggleSelection(false);
 481         tt->replaceSelectionWithString(this, replacestring);
 482
 483         tt->setSelectionOverString(this, replacestring);
 484
 485         // Go back so that replacement string is also spellchecked
 486         for (string::size_type i = 0; i < replacestring.length() + 1; ++i) {
 487                 tt->cursorLeft(this);
 488         }
 489         update(tt, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 490 }
 491 // End of spellchecker stuff
 492
 493
 494 bool BufferView::lockInset(UpdatableInset * inset)
 495 {
 496         if (!inset)
 497                 return false;
 498         // don't relock if we're already locked
 499         if (theLockingInset() == inset)
 500                 return true;
 501         if (!theLockingInset()) {
 502                 // first check if it's the inset under the cursor we want lock
 503                 // should be most of the time
 504                 char const c = text->cursor.par()->getChar(text->cursor.pos());
 505                 if (c == Paragraph::META_INSET) {
 506                         Inset * in = text->cursor.par()->getInset(text->cursor.pos());
 507                         if (inset == in) {
 508                                 theLockingInset(inset);
 509                                 return true;
 510                         }
 511                 }
 512                 // Then do a deep look of the inset and lock the right one
 513                 Paragraph * par = buffer()->paragraph;
 514                 int const id = inset->id();
 515                 while(par) {
 516                         Paragraph::inset_iterator it =
 517                                 par->inset_iterator_begin();
 518                         Paragraph::inset_iterator const end =
 519                                 par->inset_iterator_end();
 520                         for (; it != end; ++it) {
 521                                 if ((*it) == inset) {
 522                                         text->setCursorIntern(this, par, it.getPos());
 523                                         theLockingInset(inset);
 524                                         return true;
 525                                 }
 526                                 if ((*it)->getInsetFromID(id)) {
 527                                         text->setCursorIntern(this, par, it.getPos());
 528                                         (*it)->edit(this);
 529                                         return theLockingInset()->lockInsetInInset(this, inset);
 530                                 }
 531                         }
 532                         par = par->next();
 533                 }
 534                 return false;
 535         }
 536         return theLockingInset()->lockInsetInInset(this, inset);
 537 }
 538
 539
 540 void BufferView::showLockedInsetCursor(int x, int y, int asc, int desc)
 541 {
 542         if (available() && theLockingInset() && !theLockingInset()->nodraw()) {
 543                 LyXCursor cursor = text->cursor;
 544                 Inset * locking_inset = theLockingInset()->getLockingInset();
 545
 546                 if ((cursor.pos() - 1 >= 0) &&
 547                     cursor.par()->isInset(cursor.pos() - 1) &&
 548                     (cursor.par()->getInset(cursor.pos() - 1) ==
 549                      locking_inset))
 550                         text->setCursor(this, cursor,
 551                                         cursor.par(), cursor.pos() - 1);
 552                 LyXScreen::Cursor_Shape shape = LyXScreen::BAR_SHAPE;
 553                 LyXText * txt = getLyXText();
 554                 if (locking_inset->isTextInset() &&
 555                     locking_inset->lyxCode() != Inset::ERT_CODE &&
 556                     (txt->real_current_font.language() !=
 557                      buffer()->params.language
 558                      || txt->real_current_font.isVisibleRightToLeft()
 559                      != buffer()->params.language->RightToLeft()))
 560                         shape = (txt->real_current_font.isVisibleRightToLeft())
 561                                 ? LyXScreen::REVERSED_L_SHAPE
 562                                 : LyXScreen::L_SHAPE;
 563                 y += cursor.y() + theLockingInset()->insetInInsetY();
 564                 pimpl_->screen_->showManualCursor(text, x, y, asc, desc,
 565                                                   shape);
 566         }
 567 }
 568
 569
 570 void BufferView::hideLockedInsetCursor()
 571 {
 572         if (theLockingInset() && available()) {
 573                 pimpl_->screen_->hideCursor();
 574         }
 575 }
 576
 577
 578 void BufferView::fitLockedInsetCursor(int x, int y, int asc, int desc)
 579 {
 580         if (theLockingInset() && available()) {
 581                 y += text->cursor.y() + theLockingInset()->insetInInsetY();
 582                 if (pimpl_->screen_->fitManualCursor(text, this, x, y, asc, desc))
 583                         updateScrollbar();
 584         }
 585 }
 586
 587
 588 int BufferView::unlockInset(UpdatableInset * inset)
 589 {
 590         if (!inset)
 591                 return 0;
 592         if (inset && theLockingInset() == inset) {
 593                 inset->insetUnlock(this);
 594                 theLockingInset(0);
 595                 // make sure we update the combo !
 596                 owner()->setLayout(getLyXText()->cursor.par()->getLayout());
 597                 finishUndo();
 598                 return 0;
 599         } else if (inset && theLockingInset() &&
 600                    theLockingInset()->unlockInsetInInset(this, inset)) {
 601                 // owner inset has updated the layout combo
 602                 finishUndo();
 603                 return 0;
 604         }
 605         return bufferlist.unlockInset(inset);
 606 }
 607
 608
 609 void BufferView::lockedInsetStoreUndo(Undo::undo_kind kind)
 610 {
 611         if (!theLockingInset())
 612                 return; // shouldn't happen
 613         if (kind == Undo::EDIT) // in this case insets would not be stored!
 614                 kind = Undo::FINISH;
 615         setUndo(this, kind,
 616                 text->cursor.par(),
 617                 text->cursor.par()->next());
 618 }
 619
 620
 621 void BufferView::updateInset(Inset * inset, bool mark_dirty)
 622 {
 623         pimpl_->updateInset(inset, mark_dirty);
 624 }
 625
 626
 627 bool BufferView::ChangeInsets(Inset::Code code,
 628                               string const & from, string const & to)
 629 {
 630         bool need_update = false;
 631         LyXCursor cursor = text->cursor;
 632         LyXCursor tmpcursor = cursor;
 633         cursor.par(tmpcursor.par());
 634         cursor.pos(tmpcursor.pos());
 635
 636         ParIterator end = buffer()->par_iterator_end();
 637         for (ParIterator it = buffer()->par_iterator_begin();
 638              it != end; ++it) {
 639                 Paragraph * par = *it;
 640                 bool changed_inset = false;
 641                 for (Paragraph::inset_iterator it2 = par->inset_iterator_begin();
 642                      it2 != par->inset_iterator_end(); ++it2) {
 643                         if ((*it2)->lyxCode() == code) {
 644                                 InsetCommand * inset = static_cast<InsetCommand *>(*it2);
 645                                 if (inset->getContents() == from) {
 646                                         inset->setContents(to);
 647                                         changed_inset = true;
 648                                 }
 649                         }
 650                 }
 651                 if (changed_inset) {
 652                         need_update = true;
 653 #ifdef WITH_WARNINGS
 654 #warning FIXME
 655 #endif
 656                         // The test it.size()==1 was needed to prevent crashes.
 657                         // How to set the cursor corretly when it.size()>1 ??
 658                         if (it.size() == 1) {
 659                                 text->setCursorIntern(this, par, 0);
 660                                 text->redoParagraphs(this, text->cursor,
 661                                                      text->cursor.par()->next());
 662                                 text->fullRebreak(this);
 663                         }
 664                 }
 665         }
 666         text->setCursorIntern(this, cursor.par(), cursor.pos());
 667         return need_update;
 668 }
 669
 670
 671 bool BufferView::ChangeRefsIfUnique(string const & from, string const & to)
 672 {
 673         // Check if the label 'from' appears more than once
 674         vector<string> labels = buffer()->getLabelList();
 675
 676         if (lyx::count(labels.begin(), labels.end(), from) > 1)
 677                 return false;
 678
 679         return ChangeInsets(Inset::REF_CODE, from, to);
 680 }
 681
 682
 683 bool BufferView::ChangeCitationsIfUnique(string const & from,
 684                                          string const & to)
 685 {
 686         typedef pair<string, string> StringPair;
 687
 688         vector<StringPair> keys = buffer()->getBibkeyList();
 689         if (count_if(keys.begin(), keys.end(),
 690                      lyx::equal_1st_in_pair<StringPair>(from))
 691             > 1)
 692                 return false;
 693
 694         return ChangeInsets(Inset::CITE_CODE, from, to);
 695 }
 696
 697
 698 UpdatableInset * BufferView::theLockingInset() const
 699 {
 700         // If NULL is not allowed we should put an Assert here. (Lgb)
 701         if (text)
 702                 return text->the_locking_inset;
 703         return 0;
 704 }
 705
 706
 707 void BufferView::theLockingInset(UpdatableInset * inset)
 708 {
 709         text->the_locking_inset = inset;
 710 }
 711
 712
 713 LyXText * BufferView::getLyXText() const
 714 {
 715         if (theLockingInset()) {
 716                 LyXText * txt = theLockingInset()->getLyXText(this, true);
 717                 if (txt)
 718                         return txt;
 719         }
 720         return text;
 721 }
 722
 723
 724 LyXText * BufferView::getParentText(Inset * inset) const
 725 {
 726         if (inset->owner()) {
 727                 LyXText * txt = inset->getLyXText(this);
 728                 inset = inset->owner();
 729                 while (inset && inset->getLyXText(this) == txt)
 730                         inset = inset->owner();
 731                 if (inset)
 732                         return inset->getLyXText(this);
 733         }
 734         return text;
 735 }
 736
 737
 738 Language const * BufferView::getParentLanguage(Inset * inset) const
 739 {
 740         LyXText * text = getParentText(inset);
 741         return text->cursor.par()->getFontSettings(buffer()->params,
 742                                                    text->cursor.pos()).language();
 743 }