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         // keep track of which pos and par the cursor was on
 111         Paragraph * cursor_par = text->cursor.par();
 112         Paragraph * cursor_par_prev = cursor_par ? cursor_par->previous() : 0;
 113         Paragraph * cursor_par_next = cursor_par ? cursor_par->next() : 0;
 114         pos_type cursor_pos = text->cursor.pos();
 115
 116         bool found = false;
 117
 118         // Trap the deletion of the paragraph the cursor is in.
 119         // Iterate until we find a paragraph that won't be immediately deleted.
 120         // In reality this should mean we only execute the body of the while
 121         // loop once at most.  However for safety we iterate rather than just
 122         // make this an if () conditional.
 123         while ((cursor_par_prev || cursor_par_next)
 124                && text->setCursor(this,
 125                                   cursor_par_prev ? cursor_par_prev : cursor_par_next,
 126                                   0)) {
 127                 // We just removed cursor_par so have to fix the "cursor"
 128                 if (cursor_par_prev) {
 129                         // '.' = cursor_par
 130                         //  a -> a.
 131                         // .
 132                         cursor_par = cursor_par_prev;
 133                         cursor_pos = cursor_par->size();
 134                 } else {
 135                         // .  -> .a
 136                         //  a
 137                         cursor_par = cursor_par_next;
 138                         cursor_pos = 0;
 139                 }
 140                 cursor_par_prev = cursor_par->previous();
 141                 cursor_par_next = cursor_par->next();
 142         }
 143
 144         // Iterate through the paragraphs removing autoDelete insets as we go.
 145         // If the paragraph ends up empty after all the autoDelete insets are
 146         // removed that paragraph will be removed by the next setCursor() call.
 147         ParIterator it = buffer()->par_iterator_begin();
 148         ParIterator end = buffer()->par_iterator_end();
 149         for (; it != end; ++it) {
 150                 Paragraph * par = *it;
 151                 Paragraph * par_prev = par ? par->previous() : 0;
 152                 bool removed = false;
 153
 154                 if (text->setCursor(this, par, 0)
 155                     && cursor_par == par_prev) {
 156                         // The previous setCursor line was deleted and that
 157                         // was the cursor_par line.  This can only happen if an
 158                         // error box was the sole item on cursor_par.
 159                         // It is possible for cursor_par_prev to be stray if
 160                         // the line it pointed to only had a error box on it
 161                         // so we have to set it to a known correct value.
 162                         // This is often the same value it already had.
 163                         cursor_par_prev = par->previous();
 164                         if (cursor_par_prev) {
 165                                 // '|' = par, '.' = cursor_par, 'E' = error box
 166                                 // First step below may occur before while{}
 167                                 //  a    |a      a     a     a.
 168                                 //  E -> .E -> |.E -> .  -> |b
 169                                 // .      b      b    |b
 170                                 //  b
 171                                 cursor_par = cursor_par_prev;
 172                                 cursor_pos = cursor_par_prev->size();
 173                                 cursor_par_prev = cursor_par->previous();
 174                                 // cursor_par_next remains the same
 175                         } else if (cursor_par_next) {
 176                                 // First step below may occur before while{}
 177                                 // .
 178                                 //  E -> |.E -> |.  -> . -> .|a
 179                                 //  a      a      a    |a
 180                                 cursor_par = cursor_par_next;
 181                                 cursor_pos = 0;
 182                                 // cursor_par_prev remains unset
 183                                 cursor_par_next = cursor_par->next();
 184                         } else {
 185                                 // I can't find a way to trigger this
 186                                 // so it should be unreachable code
 187                                 // unless the buffer is corrupted.
 188                                 lyxerr << "BufferView::removeAutoInsets() is bad\n";
 189                         }
 190                 }
 191
 192                 Paragraph::inset_iterator pit = par->inset_iterator_begin();
 193                 Paragraph::inset_iterator pend = par->inset_iterator_end();
 194                 while (pit != pend) {
 195                         if (pit->autoDelete()) {
 196                                 removed = true;
 197                                 pos_type const pos = pit.getPos();
 198
 199                                 par->erase(pos);
 200                                 // We just invalidated par's inset iterators so
 201                                 // we get the next valid iterator position
 202                                 pit = par->InsetIterator(pos);
 203                                 // and ensure we have a valid end iterator.
 204                                 pend = par->inset_iterator_end();
 205
 206                                 if (cursor_par == par) {
 207                                         // update the saved cursor position
 208                                         if (cursor_pos > pos)
 209                                                 --cursor_pos;
 210                                 }
 211                         } else {
 212                                 ++pit;
 213                         }
 214                 }
 215                 if (removed) {
 216                         found = true;
 217                         text->redoParagraph(this);
 218                 }
 219         }
 220
 221         // It is possible that the last line is empty if it was cursor_par
 222         // and/or only had an error inset on it.  So we set the cursor to the
 223         // start of the doc to force its removal and ensure a valid saved cursor
 224         if (text->setCursor(this, text->ownerParagraph(), 0)
 225             && 0 == cursor_par_next) {
 226                 cursor_par = cursor_par_prev;
 227                 cursor_pos = cursor_par->size();
 228         } else if (cursor_pos > cursor_par->size()) {
 229                 // Some C-Enter lines were removed by the setCursor call which
 230                 // then invalidated cursor_pos. It could still be "wrong" because
 231                 // the cursor may appear to have jumped but since we collapsed
 232                 // some C-Enter lines this should be a reasonable compromise.
 233                 cursor_pos = cursor_par->size();
 234         }
 235
 236         // restore the original cursor in its corrected location.
 237         text->setCursorIntern(this, cursor_par, cursor_pos);
 238
 239         return found;
 240 }
 241
 242
 243 void BufferView::insertErrors(TeXErrors & terr)
 244 {
 245         // Save the cursor position
 246         LyXCursor cursor = text->cursor;
 247
 248         TeXErrors::Errors::const_iterator cit = terr.begin();
 249         TeXErrors::Errors::const_iterator end = terr.end();
 250         for (; cit != end; ++cit) {
 251                 string const desctext(cit->error_desc);
 252                 string const errortext(cit->error_text);
 253                 string const msgtxt = desctext + '\n' + errortext;
 254                 int const errorrow = cit->error_in_line;
 255
 256                 // Insert error string for row number
 257                 int tmpid = -1;
 258                 int tmppos = -1;
 259
 260                 if (buffer()->texrow.getIdFromRow(errorrow, tmpid, tmppos)) {
 261                         buffer()->texrow.increasePos(tmpid, tmppos);
 262                 }
 263
 264                 Paragraph * texrowpar = 0;
 265
 266                 if (tmpid == -1) {
 267                         texrowpar = text->ownerParagraph();
 268                         tmppos = 0;
 269                 } else {
 270                         texrowpar = buffer()->getParFromID(tmpid);
 271                 }
 272
 273                 if (texrowpar == 0)
 274                         continue;
 275
 276                 InsetError * new_inset = new InsetError(msgtxt);
 277                 text->setCursorIntern(this, texrowpar, tmppos);
 278                 text->insertInset(this, new_inset);
 279                 text->fullRebreak(this);
 280         }
 281         // Restore the cursor position
 282         text->setCursorIntern(this, cursor.par(), cursor.pos());
 283 }
 284
 285
 286 void BufferView::setCursorFromRow(int row)
 287 {
 288         int tmpid = -1;
 289         int tmppos = -1;
 290
 291         buffer()->texrow.getIdFromRow(row, tmpid, tmppos);
 292
 293         Paragraph * texrowpar;
 294
 295         if (tmpid == -1) {
 296                 texrowpar = text->ownerParagraph();
 297                 tmppos = 0;
 298         } else {
 299                 texrowpar = buffer()->getParFromID(tmpid);
 300         }
 301         text->setCursor(this, texrowpar, tmppos);
 302 }
 303
 304
 305 bool BufferView::insertInset(Inset * inset, string const & lout)
 306 {
 307         return pimpl_->insertInset(inset, lout);
 308 }
 309
 310
 311 /* This is also a buffer property (ale) */
 312 // Not so sure about that. a goto Label function can not be buffer local, just
 313 // think how this will work in a multiwindo/buffer environment, all the
 314 // cursors in all the views showing this buffer will move. (Lgb)
 315 // OK, then no cursor action should be allowed in buffer. (ale)
 316 bool BufferView::gotoLabel(string const & label)
 317
 318 {
 319         for (Buffer::inset_iterator it = buffer()->inset_iterator_begin();
 320              it != buffer()->inset_iterator_end(); ++it) {
 321                 vector<string> labels = (*it)->getLabelList();
 322                 if (find(labels.begin(),labels.end(),label)
 323                      != labels.end()) {
 324                         beforeChange(text);
 325                         text->setCursor(this, it.getPar(), it.getPos());
 326                         text->selection.cursor = text->cursor;
 327                         update(text, BufferView::SELECT|BufferView::FITCUR);
 328                         return true;
 329                 }
 330         }
 331         return false;
 332 }
 333
 334
 335 void BufferView::menuUndo()
 336 {
 337         if (available()) {
 338                 owner()->message(_("Undo"));
 339                 hideCursor();
 340                 beforeChange(text);
 341                 update(text, BufferView::SELECT|BufferView::FITCUR);
 342                 if (!textUndo(this))
 343                         owner()->message(_("No further undo information"));
 344                 else
 345                         update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 346                 setState();
 347         }
 348 }
 349
 350
 351 void BufferView::menuRedo()
 352 {
 353 #if 0 // this should not be here (Jug 20011206)
 354         if (theLockingInset()) {
 355                 owner()->message(_("Redo not yet supported in math mode"));
 356                 return;
 357         }
 358 #endif
 359
 360         if (available()) {
 361                 owner()->message(_("Redo"));
 362                 hideCursor();
 363                 beforeChange(text);
 364                 update(text, BufferView::SELECT|BufferView::FITCUR);
 365                 if (!textRedo(this))
 366                         owner()->message(_("No further redo information"));
 367                 else
 368                         update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 369                 setState();
 370         }
 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                 text->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()) return;
 417
 418         owner()->message(_("Paste"));
 419
 420         hideCursor();
 421         // clear the selection
 422         toggleSelection();
 423         text->clearSelection();
 424         update(text, BufferView::SELECT|BufferView::FITCUR);
 425
 426         // paste
 427         text->pasteSelection(this);
 428         update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 429
 430         // clear the selection
 431         toggleSelection();
 432         text->clearSelection();
 433         update(text, BufferView::SELECT|BufferView::FITCUR);
 434 }
 435
 436
 437 /* these functions are for the spellchecker */
 438 string const BufferView::nextWord(float & value)
 439 {
 440         if (!available()) {
 441                 value = 1;
 442                 return string();
 443         }
 444
 445         return text->selectNextWordToSpellcheck(this, value);
 446 }
 447
 448
 449 void BufferView::selectLastWord()
 450 {
 451         if (!available()) return;
 452
 453         LyXCursor cur = text->selection.cursor;
 454         hideCursor();
 455         beforeChange(text);
 456         text->selection.cursor = cur;
 457         text->selectSelectedWord(this);
 458         toggleSelection(false);
 459         update(text, BufferView::SELECT|BufferView::FITCUR);
 460 }
 461
 462
 463 void BufferView::endOfSpellCheck()
 464 {
 465         if (!available()) return;
 466
 467         hideCursor();
 468         beforeChange(text);
 469         text->selectSelectedWord(this);
 470         text->clearSelection();
 471         update(text, BufferView::SELECT|BufferView::FITCUR);
 472 }
 473
 474
 475 void BufferView::replaceWord(string const & replacestring)
 476 {
 477         if (!available()) return;
 478
 479         LyXText * tt = getLyXText();
 480         hideCursor();
 481         update(tt, BufferView::SELECT|BufferView::FITCUR);
 482
 483         /* clear the selection (if there is any) */
 484         toggleSelection(false);
 485         update(tt, BufferView::SELECT|BufferView::FITCUR);
 486
 487         /* clear the selection (if there is any) */
 488         toggleSelection(false);
 489         tt->replaceSelectionWithString(this, replacestring);
 490
 491         tt->setSelectionOverString(this, replacestring);
 492
 493         // Go back so that replacement string is also spellchecked
 494         for (string::size_type i = 0; i < replacestring.length() + 1; ++i) {
 495                 tt->cursorLeft(this);
 496         }
 497         update(tt, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 498 }
 499 // End of spellchecker stuff
 500
 501
 502 bool BufferView::lockInset(UpdatableInset * inset)
 503 {
 504         if (!inset)
 505                 return false;
 506         // don't relock if we're already locked
 507         if (theLockingInset() == inset)
 508                 return true;
 509         if (!theLockingInset()) {
 510                 // first check if it's the inset under the cursor we want lock
 511                 // should be most of the time
 512                 char const c = text->cursor.par()->getChar(text->cursor.pos());
 513                 if (c == Paragraph::META_INSET) {
 514                         Inset * in = text->cursor.par()->getInset(text->cursor.pos());
 515                         if (inset == in) {
 516                                 theLockingInset(inset);
 517                                 return true;
 518                         }
 519                 }
 520                 // Then do a deep look of the inset and lock the right one
 521                 Paragraph * par = buffer()->paragraph;
 522                 int const id = inset->id();
 523                 while(par) {
 524                         Paragraph::inset_iterator it =
 525                                 par->inset_iterator_begin();
 526                         Paragraph::inset_iterator const end =
 527                                 par->inset_iterator_end();
 528                         for (; it != end; ++it) {
 529                                 if ((*it) == inset) {
 530                                         text->setCursorIntern(this, par, it.getPos());
 531                                         theLockingInset(inset);
 532                                         return true;
 533                                 }
 534                                 if ((*it)->getInsetFromID(id)) {
 535                                         text->setCursorIntern(this, par, it.getPos());
 536                                         (*it)->edit(this);
 537                                         return theLockingInset()->lockInsetInInset(this, inset);
 538                                 }
 539                         }
 540                         par = par->next();
 541                 }
 542                 return false;
 543         }
 544         return theLockingInset()->lockInsetInInset(this, inset);
 545 }
 546
 547
 548 void BufferView::showLockedInsetCursor(int x, int y, int asc, int desc)
 549 {
 550         if (available() && theLockingInset() && !theLockingInset()->nodraw()) {
 551                 LyXCursor cursor = text->cursor;
 552                 Inset * locking_inset = theLockingInset()->getLockingInset();
 553
 554                 if ((cursor.pos() - 1 >= 0) &&
 555                     cursor.par()->isInset(cursor.pos() - 1) &&
 556                     (cursor.par()->getInset(cursor.pos() - 1) ==
 557                      locking_inset))
 558                         text->setCursor(this, cursor,
 559                                         cursor.par(), cursor.pos() - 1);
 560                 LyXScreen::Cursor_Shape shape = LyXScreen::BAR_SHAPE;
 561                 LyXText * txt = getLyXText();
 562                 if (locking_inset->isTextInset() &&
 563                     locking_inset->lyxCode() != Inset::ERT_CODE &&
 564                     (txt->real_current_font.language() !=
 565                      buffer()->params.language
 566                      || txt->real_current_font.isVisibleRightToLeft()
 567                      != buffer()->params.language->RightToLeft()))
 568                         shape = (txt->real_current_font.isVisibleRightToLeft())
 569                                 ? LyXScreen::REVERSED_L_SHAPE
 570                                 : LyXScreen::L_SHAPE;
 571                 y += cursor.y() + theLockingInset()->insetInInsetY();
 572                 pimpl_->screen_->showManualCursor(text, x, y, asc, desc,
 573                                                   shape);
 574         }
 575 }
 576
 577
 578 void BufferView::hideLockedInsetCursor()
 579 {
 580         if (theLockingInset() && available()) {
 581                 pimpl_->screen_->hideCursor();
 582         }
 583 }
 584
 585
 586 void BufferView::fitLockedInsetCursor(int x, int y, int asc, int desc)
 587 {
 588         if (theLockingInset() && available()) {
 589                 y += text->cursor.y() + theLockingInset()->insetInInsetY();
 590                 if (pimpl_->screen_->fitManualCursor(text, this, x, y, asc, desc))
 591                         updateScrollbar();
 592         }
 593 }
 594
 595
 596 int BufferView::unlockInset(UpdatableInset * inset)
 597 {
 598         if (!inset)
 599                 return 0;
 600         if (inset && theLockingInset() == inset) {
 601                 inset->insetUnlock(this);
 602                 theLockingInset(0);
 603                 // make sure we update the combo !
 604                 owner()->setLayout(getLyXText()->cursor.par()->layout());
 605                 finishUndo();
 606                 return 0;
 607         } else if (inset && theLockingInset() &&
 608                    theLockingInset()->unlockInsetInInset(this, inset)) {
 609                 // owner inset has updated the layout combo
 610                 finishUndo();
 611                 return 0;
 612         }
 613         return bufferlist.unlockInset(inset);
 614 }
 615
 616
 617 void BufferView::lockedInsetStoreUndo(Undo::undo_kind kind)
 618 {
 619         if (!theLockingInset())
 620                 return; // shouldn't happen
 621         if (kind == Undo::EDIT) // in this case insets would not be stored!
 622                 kind = Undo::FINISH;
 623         setUndo(this, kind,
 624                 text->cursor.par(),
 625                 text->cursor.par()->next());
 626 }
 627
 628
 629 void BufferView::updateInset(Inset * inset, bool mark_dirty)
 630 {
 631         pimpl_->updateInset(inset, mark_dirty);
 632 }
 633
 634
 635 bool BufferView::ChangeInsets(Inset::Code code,
 636                               string const & from, string const & to)
 637 {
 638         bool need_update = false;
 639         LyXCursor cursor = text->cursor;
 640         LyXCursor tmpcursor = cursor;
 641         cursor.par(tmpcursor.par());
 642         cursor.pos(tmpcursor.pos());
 643
 644         ParIterator end = buffer()->par_iterator_end();
 645         for (ParIterator it = buffer()->par_iterator_begin();
 646              it != end; ++it) {
 647                 Paragraph * par = *it;
 648                 bool changed_inset = false;
 649                 for (Paragraph::inset_iterator it2 = par->inset_iterator_begin();
 650                      it2 != par->inset_iterator_end(); ++it2) {
 651                         if ((*it2)->lyxCode() == code) {
 652                                 InsetCommand * inset = static_cast<InsetCommand *>(*it2);
 653                                 if (inset->getContents() == from) {
 654                                         inset->setContents(to);
 655                                         changed_inset = true;
 656                                 }
 657                         }
 658                 }
 659                 if (changed_inset) {
 660                         need_update = true;
 661 #ifdef WITH_WARNINGS
 662 #warning FIXME
 663 #endif
 664                         // The test it.size()==1 was needed to prevent crashes.
 665                         // How to set the cursor corretly when it.size()>1 ??
 666                         if (it.size() == 1) {
 667                                 text->setCursorIntern(this, par, 0);
 668                                 text->redoParagraphs(this, text->cursor,
 669                                                      text->cursor.par()->next());
 670                                 text->fullRebreak(this);
 671                         }
 672                 }
 673         }
 674         text->setCursorIntern(this, cursor.par(), cursor.pos());
 675         return need_update;
 676 }
 677
 678
 679 bool BufferView::ChangeRefsIfUnique(string const & from, string const & to)
 680 {
 681         // Check if the label 'from' appears more than once
 682         vector<string> labels = buffer()->getLabelList();
 683
 684         if (lyx::count(labels.begin(), labels.end(), from) > 1)
 685                 return false;
 686
 687         return ChangeInsets(Inset::REF_CODE, from, to);
 688 }
 689
 690
 691 bool BufferView::ChangeCitationsIfUnique(string const & from,
 692                                          string const & to)
 693 {
 694         typedef pair<string, string> StringPair;
 695
 696         vector<StringPair> keys = buffer()->getBibkeyList();
 697         if (count_if(keys.begin(), keys.end(),
 698                      lyx::equal_1st_in_pair<StringPair>(from))
 699             > 1)
 700                 return false;
 701
 702         return ChangeInsets(Inset::CITE_CODE, from, to);
 703 }
 704
 705
 706 UpdatableInset * BufferView::theLockingInset() const
 707 {
 708         // If NULL is not allowed we should put an Assert here. (Lgb)
 709         if (text)
 710                 return text->the_locking_inset;
 711         return 0;
 712 }
 713
 714
 715 void BufferView::theLockingInset(UpdatableInset * inset)
 716 {
 717         text->the_locking_inset = inset;
 718 }
 719
 720
 721 LyXText * BufferView::getLyXText() const
 722 {
 723         if (theLockingInset()) {
 724                 LyXText * txt = theLockingInset()->getLyXText(this, true);
 725                 if (txt)
 726                         return txt;
 727         }
 728         return text;
 729 }
 730
 731
 732 LyXText * BufferView::getParentText(Inset * inset) const
 733 {
 734         if (inset->owner()) {
 735                 LyXText * txt = inset->getLyXText(this);
 736                 inset = inset->owner();
 737                 while (inset && inset->getLyXText(this) == txt)
 738                         inset = inset->owner();
 739                 if (inset)
 740                         return inset->getLyXText(this);
 741         }
 742         return text;
 743 }
 744
 745
 746 Language const * BufferView::getParentLanguage(Inset * inset) const
 747 {
 748         LyXText * text = getParentText(inset);
 749         return text->cursor.par()->getFontSettings(buffer()->params,
 750                                                    text->cursor.pos()).language();
 751 }