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
  31 #include "frontends/Alert.h"
  32 #include "frontends/Dialogs.h"
  33 #include "frontends/LyXView.h"
  34 #include "frontends/WorkArea.h"
  35 #include "frontends/screen.h"
  36
  37 #include "insets/insetcommand.h" // ChangeRefs
  38 #include "insets/inseterror.h"
  39 #include "insets/updatableinset.h"
  40
  41 #include "support/FileInfo.h"
  42 #include "support/filetools.h"
  43 #include "support/lyxfunctional.h" // equal_1st_in_pair
  44 #include "support/types.h"
  45 #include "support/lyxalgo.h" // lyx_count
  46 #include "BoostFormat.h"
  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::showCursor()
 226 {
 227         pimpl_->showCursor();
 228 }
 229
 230
 231 void BufferView::hideCursor()
 232 {
 233         pimpl_->hideCursor();
 234 }
 235
 236
 237 void BufferView::toggleSelection(bool b)
 238 {
 239         pimpl_->toggleSelection(b);
 240 }
 241
 242
 243 void BufferView::toggleToggle()
 244 {
 245         pimpl_->toggleToggle();
 246 }
 247
 248
 249 void BufferView::center()
 250 {
 251         pimpl_->center();
 252 }
 253
 254
 255 string const BufferView::getClipboard() const
 256 {
 257         return pimpl_->workarea().getClipboard();
 258 }
 259
 260
 261 void BufferView::stuffClipboard(string const & stuff) const
 262 {
 263         pimpl_->stuffClipboard(stuff);
 264 }
 265
 266
 267 BufferView::UpdateCodes operator|(BufferView::UpdateCodes uc1,
 268                                   BufferView::UpdateCodes uc2)
 269 {
 270         return static_cast<BufferView::UpdateCodes>
 271                 (static_cast<int>(uc1) | static_cast<int>(uc2));
 272 }
 273
 274
 275 bool BufferView::dispatch(FuncRequest const & ev)
 276 {
 277         return pimpl_->dispatch(ev);
 278 }
 279
 280
 281 void BufferView::scroll(int lines)
 282 {
 283         pimpl_->scroll(lines);
 284 }
 285
 286
 287 // Inserts a file into current document
 288 bool BufferView::insertLyXFile(string const & filen)
 289         //
 290         // Copyright CHT Software Service GmbH
 291         // Uwe C. Schroeder
 292         //
 293         // Insert a LyXformat - file into current buffer
 294         //
 295         // Moved from lyx_cb.C (Lgb)
 296 {
 297         if (filen.empty())
 298                 return false;
 299
 300         string const fname = MakeAbsPath(filen);
 301
 302         // check if file exist
 303         FileInfo const fi(fname);
 304
 305         if (!fi.readable()) {
 306                 Alert::alert(_("Error!"),
 307                            _("Specified file is unreadable: "),
 308                            MakeDisplayPath(fname, 50));
 309                 return false;
 310         }
 311
 312         beforeChange(text);
 313
 314         ifstream ifs(fname.c_str());
 315         if (!ifs) {
 316                 string const error = strerror(errno);
 317                 string const file = MakeDisplayPath(fname, 50);
 318 #if USE_BOOST_FORMAT
 319                 boost::format fmt(_("Could not open the specified document\n%1$s\ndue to the error: %2$s"));
 320                 fmt % file;
 321                 fmt % error;
 322                 string text = fmt.str();
 323 #else
 324                 string text = _("Could not open the specified document\n");
 325                 text += file + _(" due to the error: ");
 326                 text += error;
 327 #endif
 328                 Alert::error(_("Could not open file"), text);
 329                 return false;
 330         }
 331
 332         int const c = ifs.peek();
 333
 334         LyXLex lex(0, 0);
 335         lex.setStream(ifs);
 336
 337         bool res = true;
 338
 339         if (c == '#') {
 340                 // FIXME: huh ? No we won't !
 341                 lyxerr[Debug::INFO] << "Will insert file with header" << endl;
 342                 res = buffer()->readFile(lex, fname, ParagraphList::iterator(text->cursor.par()));
 343         } else {
 344                 lyxerr[Debug::INFO] << "Will insert file without header"
 345                                     << endl;
 346                 res = buffer()->readBody(lex, ParagraphList::iterator(text->cursor.par()));
 347         }
 348
 349         resize();
 350         return res;
 351 }
 352
 353
 354 bool BufferView::removeAutoInsets()
 355 {
 356         // keep track of which pos and par the cursor was on
 357         Paragraph * cursor_par = text->cursor.par();
 358         Paragraph * cursor_par_prev = cursor_par ? cursor_par->previous() : 0;
 359         Paragraph * cursor_par_next = cursor_par ? cursor_par->next() : 0;
 360         pos_type cursor_pos = text->cursor.pos();
 361
 362         bool found = false;
 363
 364         // Trap the deletion of the paragraph the cursor is in.
 365         // Iterate until we find a paragraph that won't be immediately deleted.
 366         // In reality this should mean we only execute the body of the while
 367         // loop once at most.  However for safety we iterate rather than just
 368         // make this an if () conditional.
 369         while ((cursor_par_prev || cursor_par_next)
 370                && text->setCursor(
 371                                   cursor_par_prev ? cursor_par_prev : cursor_par_next,
 372                                   0)) {
 373                 // We just removed cursor_par so have to fix the "cursor"
 374                 if (cursor_par_prev) {
 375                         // '.' = cursor_par
 376                         //  a -> a.
 377                         // .
 378                         cursor_par = cursor_par_prev;
 379                         cursor_pos = cursor_par->size();
 380                 } else {
 381                         // .  -> .a
 382                         //  a
 383                         cursor_par = cursor_par_next;
 384                         cursor_pos = 0;
 385                 }
 386                 cursor_par_prev = cursor_par->previous();
 387                 cursor_par_next = cursor_par->next();
 388         }
 389
 390         // Iterate through the paragraphs removing autoDelete insets as we go.
 391         // If the paragraph ends up empty after all the autoDelete insets are
 392         // removed that paragraph will be removed by the next setCursor() call.
 393         ParIterator it = buffer()->par_iterator_begin();
 394         ParIterator end = buffer()->par_iterator_end();
 395         for (; it != end; ++it) {
 396                 Paragraph * par = *it;
 397                 Paragraph * par_prev = par ? par->previous() : 0;
 398                 bool removed = false;
 399
 400                 if (text->setCursor(par, 0)
 401                     && cursor_par == par_prev) {
 402                         // The previous setCursor line was deleted and that
 403                         // was the cursor_par line.  This can only happen if an
 404                         // error box was the sole item on cursor_par.
 405                         // It is possible for cursor_par_prev to be stray if
 406                         // the line it pointed to only had a error box on it
 407                         // so we have to set it to a known correct value.
 408                         // This is often the same value it already had.
 409                         cursor_par_prev = par->previous();
 410                         if (cursor_par_prev) {
 411                                 // '|' = par, '.' = cursor_par, 'E' = error box
 412                                 // First step below may occur before while{}
 413                                 //  a    |a      a     a     a.
 414                                 //  E -> .E -> |.E -> .  -> |b
 415                                 // .      b      b    |b
 416                                 //  b
 417                                 cursor_par = cursor_par_prev;
 418                                 cursor_pos = cursor_par_prev->size();
 419                                 cursor_par_prev = cursor_par->previous();
 420                                 // cursor_par_next remains the same
 421                         } else if (cursor_par_next) {
 422                                 // First step below may occur before while{}
 423                                 // .
 424                                 //  E -> |.E -> |.  -> . -> .|a
 425                                 //  a      a      a    |a
 426                                 cursor_par = cursor_par_next;
 427                                 cursor_pos = 0;
 428                                 // cursor_par_prev remains unset
 429                                 cursor_par_next = cursor_par->next();
 430                         } else {
 431                                 // I can't find a way to trigger this
 432                                 // so it should be unreachable code
 433                                 // unless the buffer is corrupted.
 434                                 lyxerr << "BufferView::removeAutoInsets() is bad\n";
 435                         }
 436                 }
 437
 438                 InsetList::iterator pit = par->insetlist.begin();
 439                 InsetList::iterator pend = par->insetlist.end();
 440
 441                 while (pit != pend) {
 442                         if (pit.getInset()->autoDelete()) {
 443                                 removed = true;
 444                                 pos_type const pos = pit.getPos();
 445
 446                                 par->erase(pos);
 447                                 // We just invalidated par's inset iterators so
 448                                 // we get the next valid iterator position
 449                                 pit = par->insetlist.insetIterator(pos);
 450                                 // and ensure we have a valid end iterator.
 451                                 pend = par->insetlist.end();
 452
 453                                 if (cursor_par == par) {
 454                                         // update the saved cursor position
 455                                         if (cursor_pos > pos)
 456                                                 --cursor_pos;
 457                                 }
 458                         } else {
 459                                 ++pit;
 460                         }
 461                 }
 462                 if (removed) {
 463                         found = true;
 464                         text->redoParagraph();
 465                 }
 466         }
 467
 468         // It is possible that the last line is empty if it was cursor_par
 469         // and/or only had an error inset on it.  So we set the cursor to the
 470         // start of the doc to force its removal and ensure a valid saved cursor
 471         if (text->setCursor(text->ownerParagraph(), 0)
 472             && 0 == cursor_par_next) {
 473                 cursor_par = cursor_par_prev;
 474                 cursor_pos = cursor_par->size();
 475         } else if (cursor_pos > cursor_par->size()) {
 476                 // Some C-Enter lines were removed by the setCursor call which
 477                 // then invalidated cursor_pos. It could still be "wrong" because
 478                 // the cursor may appear to have jumped but since we collapsed
 479                 // some C-Enter lines this should be a reasonable compromise.
 480                 cursor_pos = cursor_par->size();
 481         }
 482
 483         // restore the original cursor in its corrected location.
 484         text->setCursorIntern(cursor_par, cursor_pos);
 485
 486         return found;
 487 }
 488
 489
 490 void BufferView::insertErrors(TeXErrors & terr)
 491 {
 492         // Save the cursor position
 493         LyXCursor cursor = text->cursor;
 494
 495         TeXErrors::Errors::const_iterator cit = terr.begin();
 496         TeXErrors::Errors::const_iterator end = terr.end();
 497         for (; cit != end; ++cit) {
 498                 string const desctext(cit->error_desc);
 499                 string const errortext(cit->error_text);
 500                 string const msgtxt = desctext + '\n' + errortext;
 501                 int const errorrow = cit->error_in_line;
 502
 503                 // Insert error string for row number
 504                 int tmpid = -1;
 505                 int tmppos = -1;
 506
 507                 if (buffer()->texrow.getIdFromRow(errorrow, tmpid, tmppos)) {
 508                         buffer()->texrow.increasePos(tmpid, tmppos);
 509                 }
 510
 511                 Paragraph * texrowpar = 0;
 512
 513                 if (tmpid == -1) {
 514                         texrowpar = text->ownerParagraph();
 515                         tmppos = 0;
 516                 } else {
 517                         texrowpar = buffer()->getParFromID(tmpid);
 518                 }
 519
 520                 if (texrowpar == 0)
 521                         continue;
 522
 523                 freezeUndo();
 524                 InsetError * new_inset = new InsetError(msgtxt);
 525                 text->setCursorIntern(texrowpar, tmppos);
 526                 text->insertInset(new_inset);
 527                 text->fullRebreak();
 528                 unFreezeUndo();
 529         }
 530         // Restore the cursor position
 531         text->setCursorIntern(cursor.par(), cursor.pos());
 532 }
 533
 534
 535 void BufferView::setCursorFromRow(int row)
 536 {
 537         int tmpid = -1;
 538         int tmppos = -1;
 539
 540         buffer()->texrow.getIdFromRow(row, tmpid, tmppos);
 541
 542         Paragraph * texrowpar;
 543
 544         if (tmpid == -1) {
 545                 texrowpar = text->ownerParagraph();
 546                 tmppos = 0;
 547         } else {
 548                 texrowpar = buffer()->getParFromID(tmpid);
 549         }
 550         text->setCursor(texrowpar, tmppos);
 551 }
 552
 553
 554 bool BufferView::insertInset(Inset * inset, string const & lout)
 555 {
 556         return pimpl_->insertInset(inset, lout);
 557 }
 558
 559
 560 // This is also a buffer property (ale)
 561 // Not so sure about that. a goto Label function can not be buffer local, just
 562 // think how this will work in a multiwindow/buffer environment, all the
 563 // cursors in all the views showing this buffer will move. (Lgb)
 564 // OK, then no cursor action should be allowed in buffer. (ale)
 565 bool BufferView::gotoLabel(string const & label)
 566 {
 567         for (Buffer::inset_iterator it = buffer()->inset_iterator_begin();
 568              it != buffer()->inset_iterator_end(); ++it) {
 569                 vector<string> labels = it->getLabelList();
 570                 if (find(labels.begin(),labels.end(),label)
 571                      != labels.end()) {
 572                         beforeChange(text);
 573                         text->setCursor(it.getPar(), it.getPos());
 574                         text->selection.cursor = text->cursor;
 575                         update(text, BufferView::SELECT);
 576                         return true;
 577                 }
 578         }
 579         return false;
 580 }
 581
 582
 583 void BufferView::undo()
 584 {
 585         if (!available())
 586                 return;
 587
 588         owner()->message(_("Undo"));
 589         hideCursor();
 590         beforeChange(text);
 591         update(text, BufferView::SELECT);
 592         if (!textUndo(this))
 593                 owner()->message(_("No further undo information"));
 594         else
 595                 update(text, BufferView::SELECT);
 596         switchKeyMap();
 597 }
 598
 599
 600 void BufferView::redo()
 601 {
 602         if (!available())
 603                 return;
 604
 605         owner()->message(_("Redo"));
 606         hideCursor();
 607         beforeChange(text);
 608         update(text, BufferView::SELECT);
 609         if (!textRedo(this))
 610                 owner()->message(_("No further redo information"));
 611         else
 612                 update(text, BufferView::SELECT);
 613         switchKeyMap();
 614 }
 615
 616
 617 void BufferView::copyEnvironment()
 618 {
 619         if (available()) {
 620                 text->copyEnvironmentType();
 621                 owner()->message(_("Paragraph environment type copied"));
 622         }
 623 }
 624
 625
 626 void BufferView::pasteEnvironment()
 627 {
 628         if (available()) {
 629                 text->pasteEnvironmentType();
 630                 owner()->message(_("Paragraph environment type set"));
 631                 update(text, BufferView::SELECT);
 632         }
 633 }
 634
 635
 636 // these functions are for the spellchecker
 637 WordLangTuple const BufferView::nextWord(float & value)
 638 {
 639         if (!available()) {
 640                 value = 1;
 641                 return WordLangTuple();
 642         }
 643
 644         return text->selectNextWordToSpellcheck(value);
 645 }
 646
 647
 648 void BufferView::selectLastWord()
 649 {
 650         if (!available())
 651                 return;
 652
 653         LyXCursor cur = text->selection.cursor;
 654         hideCursor();
 655         beforeChange(text);
 656         text->selection.cursor = cur;
 657         text->selectSelectedWord();
 658         toggleSelection(false);
 659         update(text, BufferView::SELECT);
 660 }
 661
 662
 663 void BufferView::endOfSpellCheck()
 664 {
 665         if (!available()) return;
 666
 667         hideCursor();
 668         beforeChange(text);
 669         text->selectSelectedWord();
 670         text->clearSelection();
 671         update(text, BufferView::SELECT);
 672 }
 673
 674
 675 void BufferView::replaceWord(string const & replacestring)
 676 {
 677         if (!available())
 678                 return;
 679
 680         LyXText * tt = getLyXText();
 681         hideCursor();
 682         update(tt, BufferView::SELECT);
 683
 684         // clear the selection (if there is any)
 685         toggleSelection(false);
 686         update(tt, BufferView::SELECT);
 687
 688         // clear the selection (if there is any)
 689         toggleSelection(false);
 690         tt->replaceSelectionWithString(replacestring);
 691
 692         tt->setSelectionRange(replacestring.length());
 693
 694         // Go back so that replacement string is also spellchecked
 695         for (string::size_type i = 0; i < replacestring.length() + 1; ++i) {
 696                 tt->cursorLeft(this);
 697         }
 698         update(tt, BufferView::SELECT);
 699
 700         // FIXME: should be done through LFUN
 701         buffer()->markDirty();
 702         fitCursor();
 703 }
 704 // End of spellchecker stuff
 705
 706
 707 bool BufferView::lockInset(UpdatableInset * inset)
 708 {
 709         if (!inset)
 710                 return false;
 711         // don't relock if we're already locked
 712         if (theLockingInset() == inset)
 713                 return true;
 714         if (!theLockingInset()) {
 715                 // first check if it's the inset under the cursor we want lock
 716                 // should be most of the time
 717                 char const c = text->cursor.par()->getChar(text->cursor.pos());
 718                 if (c == Paragraph::META_INSET) {
 719                         Inset * in = text->cursor.par()->getInset(text->cursor.pos());
 720                         if (inset == in) {
 721                                 theLockingInset(inset);
 722                                 return true;
 723                         }
 724                 }
 725                 // Then do a deep look of the inset and lock the right one
 726                 int const id = inset->id();
 727                 ParagraphList::iterator pit = buffer()->paragraphs.begin();
 728                 ParagraphList::iterator pend = buffer()->paragraphs.end();
 729                 for (; pit != pend; ++pit) {
 730                         InsetList::iterator it = pit->insetlist.begin();
 731                         InsetList::iterator end = pit->insetlist.end();
 732                         for (; it != end; ++it) {
 733                                 if (it.getInset() == inset) {
 734                                         text->setCursorIntern(&*pit, it.getPos());
 735                                         theLockingInset(inset);
 736                                         return true;
 737                                 }
 738                                 if (it.getInset()->getInsetFromID(id)) {
 739                                         text->setCursorIntern(&*pit, it.getPos());
 740                                         it.getInset()->edit(this);
 741                                         return theLockingInset()->lockInsetInInset(this, inset);
 742                                 }
 743                         }
 744                 }
 745                 return false;
 746         }
 747         return theLockingInset()->lockInsetInInset(this, inset);
 748 }
 749
 750
 751 void BufferView::showLockedInsetCursor(int x, int y, int asc, int desc)
 752 {
 753         if (available() && theLockingInset() && !theLockingInset()->nodraw()) {
 754                 LyXCursor cursor = text->cursor;
 755                 Inset * locking_inset = theLockingInset()->getLockingInset();
 756
 757                 if ((cursor.pos() - 1 >= 0) &&
 758                     cursor.par()->isInset(cursor.pos() - 1) &&
 759                     (cursor.par()->getInset(cursor.pos() - 1) ==
 760                      locking_inset))
 761                         text->setCursor(cursor,
 762                                         cursor.par(), cursor.pos() - 1);
 763                 LyXScreen::Cursor_Shape shape = LyXScreen::BAR_SHAPE;
 764                 LyXText * txt = getLyXText();
 765                 if (locking_inset->isTextInset() &&
 766                     locking_inset->lyxCode() != Inset::ERT_CODE &&
 767                     (txt->real_current_font.language() !=
 768                      buffer()->params.language
 769                      || txt->real_current_font.isVisibleRightToLeft()
 770                      != buffer()->params.language->RightToLeft()))
 771                         shape = (txt->real_current_font.isVisibleRightToLeft())
 772                                 ? LyXScreen::REVERSED_L_SHAPE
 773                                 : LyXScreen::L_SHAPE;
 774                 y += cursor.iy() + theLockingInset()->insetInInsetY();
 775                 screen().showManualCursor(text, x, y, asc, desc,
 776                                                   shape);
 777         }
 778 }
 779
 780
 781 void BufferView::hideLockedInsetCursor()
 782 {
 783         if (theLockingInset() && available()) {
 784                 screen().hideCursor();
 785         }
 786 }
 787
 788
 789 bool BufferView::fitLockedInsetCursor(int x, int y, int asc, int desc)
 790 {
 791         if (theLockingInset() && available()) {
 792                 y += text->cursor.iy() + theLockingInset()->insetInInsetY();
 793                 if (screen().fitManualCursor(this, text, x, y, asc, desc)) {
 794                         updateScrollbar();
 795                         return true;
 796                 }
 797         }
 798         return false;
 799 }
 800
 801
 802 int BufferView::unlockInset(UpdatableInset * inset)
 803 {
 804         if (!inset)
 805                 return 0;
 806         if (inset && theLockingInset() == inset) {
 807                 inset->insetUnlock(this);
 808                 theLockingInset(0);
 809                 // make sure we update the combo !
 810                 owner()->setLayout(getLyXText()->cursor.par()->layout()->name());
 811                 // Tell the paragraph dialog that we changed paragraph
 812                 dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 813                 finishUndo();
 814                 return 0;
 815         } else if (inset && theLockingInset() &&
 816                    theLockingInset()->unlockInsetInInset(this, inset)) {
 817                 // Tell the paragraph dialog that we changed paragraph
 818                 dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 819                 // owner inset has updated the layout combo
 820                 finishUndo();
 821                 return 0;
 822         }
 823         return 1;
 824 }
 825
 826
 827 void BufferView::lockedInsetStoreUndo(Undo::undo_kind kind)
 828 {
 829         if (!theLockingInset())
 830                 return; // shouldn't happen
 831         if (kind == Undo::EDIT) // in this case insets would not be stored!
 832                 kind = Undo::FINISH;
 833         setUndo(this, kind,
 834                 text->cursor.par(),
 835                 text->cursor.par()->next());
 836 }
 837
 838
 839 void BufferView::updateInset(Inset * inset)
 840 {
 841         pimpl_->updateInset(inset);
 842 }
 843
 844
 845 bool BufferView::ChangeInsets(Inset::Code code,
 846                               string const & from, string const & to)
 847 {
 848         bool need_update = false;
 849         LyXCursor cursor = text->cursor;
 850         LyXCursor tmpcursor = cursor;
 851         cursor.par(tmpcursor.par());
 852         cursor.pos(tmpcursor.pos());
 853
 854         ParIterator end = buffer()->par_iterator_end();
 855         for (ParIterator it = buffer()->par_iterator_begin();
 856              it != end; ++it) {
 857                 Paragraph * par = *it;
 858                 bool changed_inset = false;
 859                 for (InsetList::iterator it2 = par->insetlist.begin();
 860                      it2 != par->insetlist.end(); ++it2) {
 861                         if (it2.getInset()->lyxCode() == code) {
 862                                 InsetCommand * inset = static_cast<InsetCommand *>(it2.getInset());
 863                                 if (inset->getContents() == from) {
 864                                         inset->setContents(to);
 865                                         changed_inset = true;
 866                                 }
 867                         }
 868                 }
 869                 if (changed_inset) {
 870                         need_update = true;
 871
 872                         // FIXME
 873
 874                         // The test it.size()==1 was needed to prevent crashes.
 875                         // How to set the cursor corretly when it.size()>1 ??
 876                         if (it.size() == 1) {
 877                                 text->setCursorIntern(par, 0);
 878                                 text->redoParagraphs(text->cursor,
 879                                                      text->cursor.par()->next());
 880                                 text->fullRebreak();
 881                         }
 882                 }
 883         }
 884         text->setCursorIntern(cursor.par(), cursor.pos());
 885         return need_update;
 886 }
 887
 888
 889 bool BufferView::ChangeRefsIfUnique(string const & from, string const & to)
 890 {
 891         // Check if the label 'from' appears more than once
 892         vector<string> labels = buffer()->getLabelList();
 893
 894         if (lyx::count(labels.begin(), labels.end(), from) > 1)
 895                 return false;
 896
 897         return ChangeInsets(Inset::REF_CODE, from, to);
 898 }
 899
 900
 901 bool BufferView::ChangeCitationsIfUnique(string const & from, string const & to)
 902 {
 903         typedef pair<string, string> StringPair;
 904
 905         vector<StringPair> keys;
 906         buffer()->fillWithBibKeys(keys);
 907         if (count_if(keys.begin(), keys.end(),
 908                      lyx::equal_1st_in_pair<StringPair>(from))
 909             > 1)
 910                 return false;
 911
 912         return ChangeInsets(Inset::CITE_CODE, from, to);
 913 }
 914
 915
 916 UpdatableInset * BufferView::theLockingInset() const
 917 {
 918         // If NULL is not allowed we should put an Assert here. (Lgb)
 919         if (text)
 920                 return text->the_locking_inset;
 921         return 0;
 922 }
 923
 924
 925 void BufferView::theLockingInset(UpdatableInset * inset)
 926 {
 927         text->the_locking_inset = inset;
 928 }
 929
 930
 931 LyXText * BufferView::getLyXText() const
 932 {
 933         if (theLockingInset()) {
 934                 LyXText * txt = theLockingInset()->getLyXText(this, true);
 935                 if (txt)
 936                         return txt;
 937         }
 938         return text;
 939 }
 940
 941
 942 LyXText * BufferView::getParentText(Inset * inset) const
 943 {
 944         if (inset->owner()) {
 945                 LyXText * txt = inset->getLyXText(this);
 946                 inset = inset->owner();
 947                 while (inset && inset->getLyXText(this) == txt)
 948                         inset = inset->owner();
 949                 if (inset)
 950                         return inset->getLyXText(this);
 951         }
 952         return text;
 953 }
 954
 955
 956 Language const * BufferView::getParentLanguage(Inset * inset) const
 957 {
 958         LyXText * text = getParentText(inset);
 959         return text->cursor.par()->getFontSettings(buffer()->params,
 960                                                    text->cursor.pos()).language();
 961 }
 962
 963
 964 Encoding const * BufferView::getEncoding() const
 965 {
 966         LyXText * t = getLyXText();
 967         if (!t)
 968                 return 0;
 969
 970         LyXCursor const & c= t->cursor;
 971         LyXFont const font = c.par()->getFont(buffer()->params, c.pos());
 972         return font.language()->encoding();
 973 }
 974
 975
 976 void BufferView::haveSelection(bool sel)
 977 {
 978         pimpl_->workarea().haveSelection(sel);
 979 }
 980
 981
 982 int BufferView::workHeight() const
 983 {
 984         return pimpl_->workarea().workHeight();
 985 }