src/BufferView.C

   1 /**
   2  * \file BufferView.C
   3  * Copyright 1995-2002 the LyX Team
   4  * Read the file COPYING
   5  *
   6  * \author unknown
   7  * \author John Levon <moz@compsoc.man.ac.uk>
   8  */
   9
  10 #include <config.h>
  11
  12 #include "BufferView.h"
  13 #include "BufferView_pimpl.h"
  14
  15 #include "BufferView_pimpl.h"
  16 #include "LaTeX.h"
  17 #include "ParagraphParameters.h"
  18 #include "WordLangTuple.h"
  19 #include "buffer.h"
  20 #include "bufferlist.h"
  21 #include "debug.h"
  22 #include "gettext.h"
  23 #include "iterators.h"
  24 #include "language.h"
  25 #include "lyxcursor.h"
  26 #include "lyxlex.h"
  27 #include "lyxtext.h"
  28 #include "undo_funcs.h"
  29 #include "changes.h"
  30 #include "paragraph_funcs.h"
  31
  32 #include "frontends/Alert.h"
  33 #include "frontends/Dialogs.h"
  34 #include "frontends/LyXView.h"
  35 #include "frontends/WorkArea.h"
  36 #include "frontends/screen.h"
  37
  38 #include "insets/insetcommand.h" // ChangeRefs
  39 #include "insets/inseterror.h"
  40 #include "insets/updatableinset.h"
  41
  42 #include "support/FileInfo.h"
  43 #include "support/filetools.h"
  44 #include "support/lyxfunctional.h" // equal_1st_in_pair
  45 #include "support/types.h"
  46 #include "support/lyxalgo.h" // lyx_count
  47
  48 #include <fstream>
  49
  50 extern BufferList bufferlist;
  51
  52 using lyx::pos_type;
  53
  54 using std::pair;
  55 using std::endl;
  56 using std::ifstream;
  57 using std::vector;
  58 using std::find;
  59 using std::count_if;
  60
  61
  62 BufferView::BufferView(LyXView * owner, int xpos, int ypos,
  63                        int width, int height)
  64         : pimpl_(new Pimpl(this, owner, xpos, ypos, width, height))
  65 {
  66         text = 0;
  67 }
  68
  69
  70 BufferView::~BufferView()
  71 {
  72         delete text;
  73         delete pimpl_;
  74 }
  75
  76
  77 Buffer * BufferView::buffer() const
  78 {
  79         return pimpl_->buffer_;
  80 }
  81
  82
  83 LyXScreen & BufferView::screen() const
  84 {
  85         return pimpl_->screen();
  86 }
  87
  88
  89 LyXView * BufferView::owner() const
  90 {
  91         return pimpl_->owner_;
  92 }
  93
  94
  95 Painter & BufferView::painter() const
  96 {
  97         return pimpl_->painter();
  98 }
  99
 100
 101 void BufferView::buffer(Buffer * b)
 102 {
 103         pimpl_->buffer(b);
 104 }
 105
 106
 107 void BufferView::reload()
 108 {
 109         string const fn = buffer()->fileName();
 110         if (bufferlist.close(buffer(), false))
 111                 buffer(bufferlist.loadLyXFile(fn));
 112 }
 113
 114
 115 void BufferView::resize()
 116 {
 117         if (pimpl_->buffer_) {
 118                 pimpl_->resizeCurrentBuffer();
 119         }
 120 }
 121
 122
 123 void BufferView::repaint()
 124 {
 125         pimpl_->repaint();
 126 }
 127
 128
 129 bool BufferView::fitCursor()
 130 {
 131         return pimpl_->fitCursor();
 132 }
 133
 134
 135 void BufferView::update()
 136 {
 137         pimpl_->update();
 138 }
 139
 140
 141 void BufferView::updateScrollbar()
 142 {
 143         pimpl_->updateScrollbar();
 144 }
 145
 146
 147 void BufferView::scrollDocView(int value)
 148 {
 149         pimpl_->scrollDocView(value);
 150 }
 151
 152
 153 void BufferView::redoCurrentBuffer()
 154 {
 155         pimpl_->redoCurrentBuffer();
 156 }
 157
 158
 159 bool BufferView::available() const
 160 {
 161         return pimpl_->available();
 162 }
 163
 164
 165 Change const BufferView::getCurrentChange()
 166 {
 167         return pimpl_->getCurrentChange();
 168 }
 169
 170
 171 void BufferView::beforeChange(LyXText * text)
 172 {
 173         pimpl_->beforeChange(text);
 174 }
 175
 176
 177 void BufferView::savePosition(unsigned int i)
 178 {
 179         pimpl_->savePosition(i);
 180 }
 181
 182
 183 void BufferView::restorePosition(unsigned int i)
 184 {
 185         pimpl_->restorePosition(i);
 186 }
 187
 188
 189 bool BufferView::isSavedPosition(unsigned int i)
 190 {
 191         return pimpl_->isSavedPosition(i);
 192 }
 193
 194
 195 void BufferView::update(LyXText * text, UpdateCodes f)
 196 {
 197         pimpl_->update(text, f);
 198 }
 199
 200
 201 void BufferView::update(UpdateCodes f)
 202 {
 203         pimpl_->update(f);
 204 }
 205
 206
 207 void BufferView::switchKeyMap()
 208 {
 209         pimpl_->switchKeyMap();
 210 }
 211
 212
 213 void BufferView::insetUnlock()
 214 {
 215         pimpl_->insetUnlock();
 216 }
 217
 218
 219 int BufferView::workWidth() const
 220 {
 221         return pimpl_->workarea().workWidth();
 222 }
 223
 224
 225 void BufferView::toggleSelection(bool b)
 226 {
 227         pimpl_->toggleSelection(b);
 228 }
 229
 230
 231 void BufferView::toggleToggle()
 232 {
 233         pimpl_->toggleToggle();
 234 }
 235
 236
 237 void BufferView::center()
 238 {
 239         pimpl_->center();
 240 }
 241
 242
 243 string const BufferView::getClipboard() const
 244 {
 245         return pimpl_->workarea().getClipboard();
 246 }
 247
 248
 249 void BufferView::stuffClipboard(string const & stuff) const
 250 {
 251         pimpl_->stuffClipboard(stuff);
 252 }
 253
 254
 255 BufferView::UpdateCodes operator|(BufferView::UpdateCodes uc1,
 256                                   BufferView::UpdateCodes uc2)
 257 {
 258         return static_cast<BufferView::UpdateCodes>
 259                 (static_cast<int>(uc1) | static_cast<int>(uc2));
 260 }
 261
 262
 263 bool BufferView::dispatch(FuncRequest const & ev)
 264 {
 265         return pimpl_->dispatch(ev);
 266 }
 267
 268
 269 void BufferView::scroll(int lines)
 270 {
 271         pimpl_->scroll(lines);
 272 }
 273
 274
 275 // Inserts a file into current document
 276 bool BufferView::insertLyXFile(string const & filen)
 277         //
 278         // Copyright CHT Software Service GmbH
 279         // Uwe C. Schroeder
 280         //
 281         // Insert a LyXformat - file into current buffer
 282         //
 283         // Moved from lyx_cb.C (Lgb)
 284 {
 285         if (filen.empty())
 286                 return false;
 287
 288         string const fname = MakeAbsPath(filen);
 289
 290         // check if file exist
 291         FileInfo const fi(fname);
 292
 293         if (!fi.readable()) {
 294                 string const file = MakeDisplayPath(fname, 50);
 295                 string const text =
 296                         bformat(_("The specified document\n%1$s\ncould not be read."), file);
 297                 Alert::error(_("Could not read document"), text);
 298                 return false;
 299         }
 300
 301         beforeChange(text);
 302
 303         ifstream ifs(fname.c_str());
 304         if (!ifs) {
 305                 string const file = MakeDisplayPath(fname, 50);
 306                 string const text =
 307                         bformat(_("Could not open the specified document\n"), file);
 308                 Alert::error(_("Could not open file"), text);
 309                 return false;
 310         }
 311
 312         int const c = ifs.peek();
 313
 314         LyXLex lex(0, 0);
 315         lex.setStream(ifs);
 316
 317         bool res = true;
 318
 319         if (c == '#') {
 320                 // FIXME: huh ? No we won't !
 321                 lyxerr[Debug::INFO] << "Will insert file with header" << endl;
 322                 res = buffer()->readFile(lex, fname, ParagraphList::iterator(text->cursor.par()));
 323         } else {
 324                 lyxerr[Debug::INFO] << "Will insert file without header"
 325                                     << endl;
 326                 res = buffer()->readBody(lex, ParagraphList::iterator(text->cursor.par()));
 327         }
 328
 329         resize();
 330         return res;
 331 }
 332
 333
 334 bool BufferView::removeAutoInsets()
 335 {
 336         // keep track of which pos and par the cursor was on
 337         Paragraph * cursor_par = &*text->cursor.par();
 338         Paragraph * cursor_par_prev = cursor_par ? cursor_par->previous() : 0;
 339         Paragraph * cursor_par_next = cursor_par ? cursor_par->next() : 0;
 340         pos_type cursor_pos = text->cursor.pos();
 341
 342         bool found = false;
 343
 344         // Trap the deletion of the paragraph the cursor is in.
 345         // Iterate until we find a paragraph that won't be immediately deleted.
 346         // In reality this should mean we only execute the body of the while
 347         // loop once at most.  However for safety we iterate rather than just
 348         // make this an if () conditional.
 349         while ((cursor_par_prev || cursor_par_next)
 350                && text->setCursor(
 351                                   cursor_par_prev ? cursor_par_prev : cursor_par_next,
 352                                   0)) {
 353                 // We just removed cursor_par so have to fix the "cursor"
 354                 if (cursor_par_prev) {
 355                         // '.' = cursor_par
 356                         //  a -> a.
 357                         // .
 358                         cursor_par = cursor_par_prev;
 359                         cursor_pos = cursor_par->size();
 360                 } else {
 361                         // .  -> .a
 362                         //  a
 363                         cursor_par = cursor_par_next;
 364                         cursor_pos = 0;
 365                 }
 366                 cursor_par_prev = cursor_par->previous();
 367                 cursor_par_next = cursor_par->next();
 368         }
 369
 370         // Iterate through the paragraphs removing autoDelete insets as we go.
 371         // If the paragraph ends up empty after all the autoDelete insets are
 372         // removed that paragraph will be removed by the next setCursor() call.
 373         ParIterator it = buffer()->par_iterator_begin();
 374         ParIterator end = buffer()->par_iterator_end();
 375         for (; it != end; ++it) {
 376                 Paragraph * par = *it;
 377                 Paragraph * par_prev = par ? par->previous() : 0;
 378                 bool removed = false;
 379
 380                 if (text->setCursor(par, 0)
 381                     && cursor_par == par_prev) {
 382                         // The previous setCursor line was deleted and that
 383                         // was the cursor_par line.  This can only happen if an
 384                         // error box was the sole item on cursor_par.
 385                         // It is possible for cursor_par_prev to be stray if
 386                         // the line it pointed to only had a error box on it
 387                         // so we have to set it to a known correct value.
 388                         // This is often the same value it already had.
 389                         cursor_par_prev = par->previous();
 390                         if (cursor_par_prev) {
 391                                 // '|' = par, '.' = cursor_par, 'E' = error box
 392                                 // First step below may occur before while{}
 393                                 //  a    |a      a     a     a.
 394                                 //  E -> .E -> |.E -> .  -> |b
 395                                 // .      b      b    |b
 396                                 //  b
 397                                 cursor_par = cursor_par_prev;
 398                                 cursor_pos = cursor_par_prev->size();
 399                                 cursor_par_prev = cursor_par->previous();
 400                                 // cursor_par_next remains the same
 401                         } else if (cursor_par_next) {
 402                                 // First step below may occur before while{}
 403                                 // .
 404                                 //  E -> |.E -> |.  -> . -> .|a
 405                                 //  a      a      a    |a
 406                                 cursor_par = cursor_par_next;
 407                                 cursor_pos = 0;
 408                                 // cursor_par_prev remains unset
 409                                 cursor_par_next = cursor_par->next();
 410                         } else {
 411                                 // I can't find a way to trigger this
 412                                 // so it should be unreachable code
 413                                 // unless the buffer is corrupted.
 414                                 lyxerr << "BufferView::removeAutoInsets() is bad\n";
 415                         }
 416                 }
 417
 418                 InsetList::iterator pit = par->insetlist.begin();
 419                 InsetList::iterator pend = par->insetlist.end();
 420
 421                 while (pit != pend) {
 422                         if (pit.getInset()->autoDelete()) {
 423                                 removed = true;
 424                                 pos_type const pos = pit.getPos();
 425
 426                                 par->erase(pos);
 427                                 // We just invalidated par's inset iterators so
 428                                 // we get the next valid iterator position
 429                                 pit = par->insetlist.insetIterator(pos);
 430                                 // and ensure we have a valid end iterator.
 431                                 pend = par->insetlist.end();
 432
 433                                 if (cursor_par == par) {
 434                                         // update the saved cursor position
 435                                         if (cursor_pos > pos)
 436                                                 --cursor_pos;
 437                                 }
 438                         } else {
 439                                 ++pit;
 440                         }
 441                 }
 442                 if (removed) {
 443                         found = true;
 444                         text->redoParagraph();
 445                 }
 446         }
 447
 448         // It is possible that the last line is empty if it was cursor_par
 449         // and/or only had an error inset on it.  So we set the cursor to the
 450         // start of the doc to force its removal and ensure a valid saved cursor
 451         if (text->setCursor(&*text->ownerParagraphs().begin(), 0)
 452             && 0 == cursor_par_next) {
 453                 cursor_par = cursor_par_prev;
 454                 cursor_pos = cursor_par->size();
 455         } else if (cursor_pos > cursor_par->size()) {
 456                 // Some C-Enter lines were removed by the setCursor call which
 457                 // then invalidated cursor_pos. It could still be "wrong" because
 458                 // the cursor may appear to have jumped but since we collapsed
 459                 // some C-Enter lines this should be a reasonable compromise.
 460                 cursor_pos = cursor_par->size();
 461         }
 462
 463         // restore the original cursor in its corrected location.
 464         text->setCursorIntern(cursor_par, cursor_pos);
 465
 466         return found;
 467 }
 468
 469
 470 void BufferView::showErrorList()
 471 {
 472         owner()->getDialogs().show("errorlist");
 473 }
 474
 475
 476 void BufferView::setCursorFromRow(int row)
 477 {
 478         int tmpid = -1;
 479         int tmppos = -1;
 480
 481         buffer()->texrow.getIdFromRow(row, tmpid, tmppos);
 482
 483         Paragraph * texrowpar;
 484
 485         if (tmpid == -1) {
 486                 texrowpar = &*text->ownerParagraphs().begin();
 487                 tmppos = 0;
 488         } else {
 489                 texrowpar = &*buffer()->getParFromID(tmpid);
 490         }
 491         text->setCursor(texrowpar, tmppos);
 492 }
 493
 494
 495 bool BufferView::insertInset(Inset * inset, string const & lout)
 496 {
 497         return pimpl_->insertInset(inset, lout);
 498 }
 499
 500
 501 void BufferView::gotoLabel(string const & label)
 502 {
 503         for (Buffer::inset_iterator it = buffer()->inset_iterator_begin();
 504              it != buffer()->inset_iterator_end(); ++it) {
 505                 vector<string> labels = it->getLabelList();
 506                 if (find(labels.begin(),labels.end(),label)
 507                      != labels.end()) {
 508                         beforeChange(text);
 509                         text->setCursor(it.getPar(), it.getPos());
 510                         text->selection.cursor = text->cursor;
 511                         update(text, BufferView::SELECT);
 512                         return;
 513                 }
 514         }
 515 }
 516
 517
 518 void BufferView::undo()
 519 {
 520         if (!available())
 521                 return;
 522
 523         owner()->message(_("Undo"));
 524         beforeChange(text);
 525         update(text, BufferView::SELECT);
 526         if (!textUndo(this))
 527                 owner()->message(_("No further undo information"));
 528         else
 529                 update(text, BufferView::SELECT);
 530         switchKeyMap();
 531 }
 532
 533
 534 void BufferView::redo()
 535 {
 536         if (!available())
 537                 return;
 538
 539         owner()->message(_("Redo"));
 540         beforeChange(text);
 541         update(text, BufferView::SELECT);
 542         if (!textRedo(this))
 543                 owner()->message(_("No further redo information"));
 544         else
 545                 update(text, BufferView::SELECT);
 546         switchKeyMap();
 547 }
 548
 549
 550 // these functions are for the spellchecker
 551 WordLangTuple const BufferView::nextWord(float & value)
 552 {
 553         if (!available()) {
 554                 value = 1;
 555                 return WordLangTuple();
 556         }
 557
 558         return text->selectNextWordToSpellcheck(value);
 559 }
 560
 561
 562 void BufferView::selectLastWord()
 563 {
 564         if (!available())
 565                 return;
 566
 567         LyXCursor cur = text->selection.cursor;
 568         beforeChange(text);
 569         text->selection.cursor = cur;
 570         text->selectSelectedWord();
 571         toggleSelection(false);
 572         update(text, BufferView::SELECT);
 573 }
 574
 575
 576 void BufferView::endOfSpellCheck()
 577 {
 578         if (!available()) return;
 579
 580         beforeChange(text);
 581         text->selectSelectedWord();
 582         text->clearSelection();
 583         update(text, BufferView::SELECT);
 584 }
 585
 586
 587 void BufferView::replaceWord(string const & replacestring)
 588 {
 589         if (!available())
 590                 return;
 591
 592         LyXText * tt = getLyXText();
 593         update(tt, BufferView::SELECT);
 594
 595         // clear the selection (if there is any)
 596         toggleSelection(false);
 597         update(tt, BufferView::SELECT);
 598
 599         // clear the selection (if there is any)
 600         toggleSelection(false);
 601         tt->replaceSelectionWithString(replacestring);
 602
 603         tt->setSelectionRange(replacestring.length());
 604
 605         // Go back so that replacement string is also spellchecked
 606         for (string::size_type i = 0; i < replacestring.length() + 1; ++i) {
 607                 tt->cursorLeft(this);
 608         }
 609         update(tt, BufferView::SELECT);
 610
 611         // FIXME: should be done through LFUN
 612         buffer()->markDirty();
 613         fitCursor();
 614 }
 615 // End of spellchecker stuff
 616
 617
 618 bool BufferView::lockInset(UpdatableInset * inset)
 619 {
 620         if (!inset)
 621                 return false;
 622         // don't relock if we're already locked
 623         if (theLockingInset() == inset)
 624                 return true;
 625         if (!theLockingInset()) {
 626                 // first check if it's the inset under the cursor we want lock
 627                 // should be most of the time
 628                 if (text->cursor.pos() < text->cursor.par()->size()
 629                     && text->cursor.par()->getChar(text->cursor.pos()) ==
 630                     Paragraph::META_INSET) {
 631                         Inset * in = text->cursor.par()->getInset(text->cursor.pos());
 632                         if (inset == in) {
 633                                 theLockingInset(inset);
 634                                 return true;
 635                         }
 636                 }
 637                 // Then do a deep look of the inset and lock the right one
 638                 int const id = inset->id();
 639                 ParagraphList::iterator pit = buffer()->paragraphs.begin();
 640                 ParagraphList::iterator pend = buffer()->paragraphs.end();
 641                 for (; pit != pend; ++pit) {
 642                         InsetList::iterator it = pit->insetlist.begin();
 643                         InsetList::iterator end = pit->insetlist.end();
 644                         for (; it != end; ++it) {
 645                                 if (it.getInset() == inset) {
 646                                         text->setCursorIntern(pit, it.getPos());
 647                                         theLockingInset(inset);
 648                                         return true;
 649                                 }
 650                                 if (it.getInset()->getInsetFromID(id)) {
 651                                         text->setCursorIntern(pit, it.getPos());
 652                                         it.getInset()->edit(this);
 653                                         return theLockingInset()->lockInsetInInset(this, inset);
 654                                 }
 655                         }
 656                 }
 657                 return false;
 658         }
 659         return theLockingInset()->lockInsetInInset(this, inset);
 660 }
 661
 662
 663 bool BufferView::fitLockedInsetCursor(int x, int y, int asc, int desc)
 664 {
 665         if (theLockingInset() && available()) {
 666                 y += text->cursor.iy() + theLockingInset()->insetInInsetY();
 667                 if (screen().fitManualCursor(this, text, x, y, asc, desc)) {
 668                         updateScrollbar();
 669                         return true;
 670                 }
 671         }
 672         return false;
 673 }
 674
 675
 676 void BufferView::hideCursor()
 677 {
 678         screen().hideCursor();
 679 }
 680
 681
 682 int BufferView::unlockInset(UpdatableInset * inset)
 683 {
 684         if (!inset)
 685                 return 0;
 686         if (inset && theLockingInset() == inset) {
 687                 inset->insetUnlock(this);
 688                 theLockingInset(0);
 689                 // make sure we update the combo !
 690                 owner()->setLayout(getLyXText()->cursor.par()->layout()->name());
 691                 // Tell the paragraph dialog that we changed paragraph
 692                 dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 693                 finishUndo();
 694                 return 0;
 695         } else if (inset && theLockingInset() &&
 696                    theLockingInset()->unlockInsetInInset(this, inset)) {
 697                 // Tell the paragraph dialog that we changed paragraph
 698                 dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 699                 // owner inset has updated the layout combo
 700                 finishUndo();
 701                 return 0;
 702         }
 703         return 1;
 704 }
 705
 706
 707 void BufferView::lockedInsetStoreUndo(Undo::undo_kind kind)
 708 {
 709         if (!theLockingInset())
 710                 return; // shouldn't happen
 711         if (kind == Undo::EDIT) // in this case insets would not be stored!
 712                 kind = Undo::FINISH;
 713         setUndo(this, kind,
 714                 text->cursor.par(),
 715                 boost::next(text->cursor.par()));
 716 }
 717
 718
 719 void BufferView::updateInset(Inset * inset)
 720 {
 721         pimpl_->updateInset(inset);
 722 }
 723
 724
 725 bool BufferView::ChangeInsets(Inset::Code code,
 726                               string const & from, string const & to)
 727 {
 728         bool need_update = false;
 729         LyXCursor cursor = text->cursor;
 730         LyXCursor tmpcursor = cursor;
 731         cursor.par(tmpcursor.par());
 732         cursor.pos(tmpcursor.pos());
 733
 734         ParIterator end = buffer()->par_iterator_end();
 735         for (ParIterator it = buffer()->par_iterator_begin();
 736              it != end; ++it) {
 737                 Paragraph * par = *it;
 738                 bool changed_inset = false;
 739                 for (InsetList::iterator it2 = par->insetlist.begin();
 740                      it2 != par->insetlist.end(); ++it2) {
 741                         if (it2.getInset()->lyxCode() == code) {
 742                                 InsetCommand * inset = static_cast<InsetCommand *>(it2.getInset());
 743                                 if (inset->getContents() == from) {
 744                                         inset->setContents(to);
 745                                         changed_inset = true;
 746                                 }
 747                         }
 748                 }
 749                 if (changed_inset) {
 750                         need_update = true;
 751
 752                         // FIXME
 753
 754                         // The test it.size()==1 was needed to prevent crashes.
 755                         // How to set the cursor corretly when it.size()>1 ??
 756                         if (it.size() == 1) {
 757                                 text->setCursorIntern(par, 0);
 758                                 text->redoParagraphs(text->cursor,
 759                                                      boost::next(text->cursor.par()));
 760                                 text->fullRebreak();
 761                         }
 762                 }
 763         }
 764         text->setCursorIntern(cursor.par(), cursor.pos());
 765         return need_update;
 766 }
 767
 768
 769 bool BufferView::ChangeRefsIfUnique(string const & from, string const & to)
 770 {
 771         // Check if the label 'from' appears more than once
 772         vector<string> labels = buffer()->getLabelList();
 773
 774         if (lyx::count(labels.begin(), labels.end(), from) > 1)
 775                 return false;
 776
 777         return ChangeInsets(Inset::REF_CODE, from, to);
 778 }
 779
 780
 781 bool BufferView::ChangeCitationsIfUnique(string const & from, string const & to)
 782 {
 783         typedef pair<string, string> StringPair;
 784
 785         vector<StringPair> keys;
 786         buffer()->fillWithBibKeys(keys);
 787         if (count_if(keys.begin(), keys.end(),
 788                      lyx::equal_1st_in_pair<StringPair>(from))
 789             > 1)
 790                 return false;
 791
 792         return ChangeInsets(Inset::CITE_CODE, from, to);
 793 }
 794
 795
 796 UpdatableInset * BufferView::theLockingInset() const
 797 {
 798         // If NULL is not allowed we should put an Assert here. (Lgb)
 799         if (text)
 800                 return text->the_locking_inset;
 801         return 0;
 802 }
 803
 804
 805 void BufferView::theLockingInset(UpdatableInset * inset)
 806 {
 807         text->the_locking_inset = inset;
 808 }
 809
 810
 811 LyXText * BufferView::getLyXText() const
 812 {
 813         if (theLockingInset()) {
 814                 LyXText * txt = theLockingInset()->getLyXText(this, true);
 815                 if (txt)
 816                         return txt;
 817         }
 818         return text;
 819 }
 820
 821
 822 LyXText * BufferView::getParentText(Inset * inset) const
 823 {
 824         if (inset->owner()) {
 825                 LyXText * txt = inset->getLyXText(this);
 826                 inset = inset->owner();
 827                 while (inset && inset->getLyXText(this) == txt)
 828                         inset = inset->owner();
 829                 if (inset)
 830                         return inset->getLyXText(this);
 831         }
 832         return text;
 833 }
 834
 835
 836 Language const * BufferView::getParentLanguage(Inset * inset) const
 837 {
 838         LyXText * text = getParentText(inset);
 839         return text->cursor.par()->getFontSettings(buffer()->params,
 840                                                    text->cursor.pos()).language();
 841 }
 842
 843
 844 Encoding const * BufferView::getEncoding() const
 845 {
 846         LyXText * t = getLyXText();
 847         if (!t)
 848                 return 0;
 849
 850         LyXCursor const & c = t->cursor;
 851         LyXFont const font = c.par()->getFont(buffer()->params, c.pos(),
 852                                               outerFont(c.par(), t->ownerParagraphs()));
 853         return font.language()->encoding();
 854 }
 855
 856
 857 void BufferView::haveSelection(bool sel)
 858 {
 859         pimpl_->workarea().haveSelection(sel);
 860 }
 861
 862
 863 int BufferView::workHeight() const
 864 {
 865         return pimpl_->workarea().workHeight();
 866 }