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 "WordLangTuple.h"
  18 #include "buffer.h"
  19 #include "bufferlist.h"
  20 #include "debug.h"
  21 #include "gettext.h"
  22 #include "iterators.h"
  23 #include "language.h"
  24 #include "lyxcursor.h"
  25 #include "lyxlex.h"
  26 #include "lyxtext.h"
  27 #include "undo_funcs.h"
  28 #include "changes.h"
  29
  30 #include "frontends/Alert.h"
  31 #include "frontends/Dialogs.h"
  32 #include "frontends/LyXView.h"
  33 #include "frontends/WorkArea.h"
  34 #include "frontends/screen.h"
  35
  36 #include "insets/insetcommand.h" // ChangeRefs
  37 #include "insets/inseterror.h"
  38 #include "insets/updatableinset.h"
  39
  40 #include "support/FileInfo.h"
  41 #include "support/filetools.h"
  42 #include "support/lyxfunctional.h" // equal_1st_in_pair
  43 #include "support/types.h"
  44 #include "support/lyxalgo.h" // lyx_count
  45
  46 #include <fstream>
  47
  48 extern BufferList bufferlist;
  49
  50 using lyx::pos_type;
  51
  52 using std::pair;
  53 using std::endl;
  54 using std::ifstream;
  55 using std::vector;
  56 using std::find;
  57 using std::count_if;
  58
  59
  60 BufferView::BufferView(LyXView * owner, int xpos, int ypos,
  61                        int width, int height)
  62         : pimpl_(new Pimpl(this, owner, xpos, ypos, width, height))
  63 {
  64         text = 0;
  65 }
  66
  67
  68 BufferView::~BufferView()
  69 {
  70         delete text;
  71         delete pimpl_;
  72 }
  73
  74
  75 Buffer * BufferView::buffer() const
  76 {
  77         return pimpl_->buffer_;
  78 }
  79
  80
  81 LyXScreen & BufferView::screen() const
  82 {
  83         return pimpl_->screen();
  84 }
  85
  86
  87 LyXView * BufferView::owner() const
  88 {
  89         return pimpl_->owner_;
  90 }
  91
  92
  93 Painter & BufferView::painter() const
  94 {
  95         return pimpl_->painter();
  96 }
  97
  98
  99 void BufferView::buffer(Buffer * b)
 100 {
 101         pimpl_->buffer(b);
 102 }
 103
 104
 105 void BufferView::reload()
 106 {
 107         string const fn = buffer()->fileName();
 108         if (bufferlist.close(buffer()))
 109                 buffer(bufferlist.loadLyXFile(fn));
 110 }
 111
 112
 113 void BufferView::resize()
 114 {
 115         if (pimpl_->buffer_) {
 116                 pimpl_->resizeCurrentBuffer();
 117         }
 118 }
 119
 120
 121 void BufferView::repaint()
 122 {
 123         pimpl_->repaint();
 124 }
 125
 126
 127 bool BufferView::fitCursor()
 128 {
 129         return pimpl_->fitCursor();
 130 }
 131
 132
 133 void BufferView::update()
 134 {
 135         pimpl_->update();
 136 }
 137
 138
 139 void BufferView::updateScrollbar()
 140 {
 141         pimpl_->updateScrollbar();
 142 }
 143
 144
 145 void BufferView::scrollDocView(int value)
 146 {
 147         pimpl_->scrollDocView(value);
 148 }
 149
 150
 151 void BufferView::redoCurrentBuffer()
 152 {
 153         pimpl_->redoCurrentBuffer();
 154 }
 155
 156
 157 bool BufferView::available() const
 158 {
 159         return pimpl_->available();
 160 }
 161
 162
 163 Change const BufferView::getCurrentChange()
 164 {
 165         return pimpl_->getCurrentChange();
 166 }
 167
 168
 169 void BufferView::beforeChange(LyXText * text)
 170 {
 171         pimpl_->beforeChange(text);
 172 }
 173
 174
 175 void BufferView::savePosition(unsigned int i)
 176 {
 177         pimpl_->savePosition(i);
 178 }
 179
 180
 181 void BufferView::restorePosition(unsigned int i)
 182 {
 183         pimpl_->restorePosition(i);
 184 }
 185
 186
 187 bool BufferView::isSavedPosition(unsigned int i)
 188 {
 189         return pimpl_->isSavedPosition(i);
 190 }
 191
 192
 193 void BufferView::update(LyXText * text, UpdateCodes f)
 194 {
 195         pimpl_->update(text, f);
 196 }
 197
 198
 199 void BufferView::switchKeyMap()
 200 {
 201         pimpl_->switchKeyMap();
 202 }
 203
 204
 205 void BufferView::insetUnlock()
 206 {
 207         pimpl_->insetUnlock();
 208 }
 209
 210
 211 int BufferView::workWidth() const
 212 {
 213         return pimpl_->workarea().workWidth();
 214 }
 215
 216
 217 void BufferView::showCursor()
 218 {
 219         pimpl_->showCursor();
 220 }
 221
 222
 223 void BufferView::hideCursor()
 224 {
 225         pimpl_->hideCursor();
 226 }
 227
 228
 229 void BufferView::toggleSelection(bool b)
 230 {
 231         pimpl_->toggleSelection(b);
 232 }
 233
 234
 235 void BufferView::toggleToggle()
 236 {
 237         pimpl_->toggleToggle();
 238 }
 239
 240
 241 void BufferView::center()
 242 {
 243         pimpl_->center();
 244 }
 245
 246
 247 string const BufferView::getClipboard() const
 248 {
 249         return pimpl_->workarea().getClipboard();
 250 }
 251
 252
 253 void BufferView::stuffClipboard(string const & stuff) const
 254 {
 255         pimpl_->stuffClipboard(stuff);
 256 }
 257
 258
 259 BufferView::UpdateCodes operator|(BufferView::UpdateCodes uc1,
 260                                   BufferView::UpdateCodes uc2)
 261 {
 262         return static_cast<BufferView::UpdateCodes>
 263                 (static_cast<int>(uc1) | static_cast<int>(uc2));
 264 }
 265
 266
 267 bool BufferView::dispatch(FuncRequest const & ev)
 268 {
 269         return pimpl_->dispatch(ev);
 270 }
 271
 272
 273 void BufferView::scroll(int lines)
 274 {
 275         pimpl_->scroll(lines);
 276 }
 277
 278
 279 // Inserts a file into current document
 280 bool BufferView::insertLyXFile(string const & filen)
 281         //
 282         // Copyright CHT Software Service GmbH
 283         // Uwe C. Schroeder
 284         //
 285         // Insert a LyXformat - file into current buffer
 286         //
 287         // Moved from lyx_cb.C (Lgb)
 288 {
 289         if (filen.empty())
 290                 return false;
 291
 292         string const fname = MakeAbsPath(filen);
 293
 294         // check if file exist
 295         FileInfo const fi(fname);
 296
 297         if (!fi.readable()) {
 298                 Alert::alert(_("Error!"),
 299                            _("Specified file is unreadable: "),
 300                            MakeDisplayPath(fname, 50));
 301                 return false;
 302         }
 303
 304         beforeChange(text);
 305
 306         ifstream ifs(fname.c_str());
 307         if (!ifs) {
 308                 Alert::err_alert(_("Error! Cannot open specified file:"),
 309                            MakeDisplayPath(fname, 50));
 310                 return false;
 311         }
 312
 313         int const c = ifs.peek();
 314
 315         LyXLex lex(0, 0);
 316         lex.setStream(ifs);
 317
 318         bool res = true;
 319
 320         if (c == '#') {
 321                 lyxerr[Debug::INFO] << "Will insert file with header" << endl;
 322                 res = buffer()->readFile(lex, fname, text->cursor.par());
 323         } else {
 324                 lyxerr[Debug::INFO] << "Will insert file without header"
 325                                     << endl;
 326                 res = buffer()->readLyXformat2(lex, 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(this,
 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(this, 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(this);
 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(this, text->ownerParagraph(), 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(this, cursor_par, cursor_pos);
 465
 466         return found;
 467 }
 468
 469
 470 void BufferView::insertErrors(TeXErrors & terr)
 471 {
 472         // Save the cursor position
 473         LyXCursor cursor = text->cursor;
 474
 475         TeXErrors::Errors::const_iterator cit = terr.begin();
 476         TeXErrors::Errors::const_iterator end = terr.end();
 477         for (; cit != end; ++cit) {
 478                 string const desctext(cit->error_desc);
 479                 string const errortext(cit->error_text);
 480                 string const msgtxt = desctext + '\n' + errortext;
 481                 int const errorrow = cit->error_in_line;
 482
 483                 // Insert error string for row number
 484                 int tmpid = -1;
 485                 int tmppos = -1;
 486
 487                 if (buffer()->texrow.getIdFromRow(errorrow, tmpid, tmppos)) {
 488                         buffer()->texrow.increasePos(tmpid, tmppos);
 489                 }
 490
 491                 Paragraph * texrowpar = 0;
 492
 493                 if (tmpid == -1) {
 494                         texrowpar = text->ownerParagraph();
 495                         tmppos = 0;
 496                 } else {
 497                         texrowpar = buffer()->getParFromID(tmpid);
 498                 }
 499
 500                 if (texrowpar == 0)
 501                         continue;
 502
 503                 freezeUndo();
 504                 InsetError * new_inset = new InsetError(msgtxt);
 505                 text->setCursorIntern(this, texrowpar, tmppos);
 506                 text->insertInset(this, new_inset);
 507                 text->fullRebreak(this);
 508                 unFreezeUndo();
 509         }
 510         // Restore the cursor position
 511         text->setCursorIntern(this, cursor.par(), cursor.pos());
 512 }
 513
 514
 515 void BufferView::setCursorFromRow(int row)
 516 {
 517         int tmpid = -1;
 518         int tmppos = -1;
 519
 520         buffer()->texrow.getIdFromRow(row, tmpid, tmppos);
 521
 522         Paragraph * texrowpar;
 523
 524         if (tmpid == -1) {
 525                 texrowpar = text->ownerParagraph();
 526                 tmppos = 0;
 527         } else {
 528                 texrowpar = buffer()->getParFromID(tmpid);
 529         }
 530         text->setCursor(this, texrowpar, tmppos);
 531 }
 532
 533
 534 bool BufferView::insertInset(Inset * inset, string const & lout)
 535 {
 536         return pimpl_->insertInset(inset, lout);
 537 }
 538
 539
 540 // This is also a buffer property (ale)
 541 // Not so sure about that. a goto Label function can not be buffer local, just
 542 // think how this will work in a multiwindow/buffer environment, all the
 543 // cursors in all the views showing this buffer will move. (Lgb)
 544 // OK, then no cursor action should be allowed in buffer. (ale)
 545 bool BufferView::gotoLabel(string const & label)
 546 {
 547         for (Buffer::inset_iterator it = buffer()->inset_iterator_begin();
 548              it != buffer()->inset_iterator_end(); ++it) {
 549                 vector<string> labels = it->getLabelList();
 550                 if (find(labels.begin(),labels.end(),label)
 551                      != labels.end()) {
 552                         beforeChange(text);
 553                         text->setCursor(this, it.getPar(), it.getPos());
 554                         text->selection.cursor = text->cursor;
 555                         update(text, BufferView::SELECT|BufferView::FITCUR);
 556                         return true;
 557                 }
 558         }
 559         return false;
 560 }
 561
 562
 563 void BufferView::undo()
 564 {
 565         if (!available())
 566                 return;
 567
 568         owner()->message(_("Undo"));
 569         hideCursor();
 570         beforeChange(text);
 571         update(text, BufferView::SELECT|BufferView::FITCUR);
 572         if (!textUndo(this))
 573                 owner()->message(_("No further undo information"));
 574         else
 575                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 576         switchKeyMap();
 577 }
 578
 579
 580 void BufferView::redo()
 581 {
 582         if (!available())
 583                 return;
 584
 585         owner()->message(_("Redo"));
 586         hideCursor();
 587         beforeChange(text);
 588         update(text, BufferView::SELECT|BufferView::FITCUR);
 589         if (!textRedo(this))
 590                 owner()->message(_("No further redo information"));
 591         else
 592                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 593         switchKeyMap();
 594 }
 595
 596
 597 void BufferView::copyEnvironment()
 598 {
 599         if (available()) {
 600                 text->copyEnvironmentType();
 601                 owner()->message(_("Paragraph environment type copied"));
 602         }
 603 }
 604
 605
 606 void BufferView::pasteEnvironment()
 607 {
 608         if (available()) {
 609                 text->pasteEnvironmentType(this);
 610                 owner()->message(_("Paragraph environment type set"));
 611                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 612         }
 613 }
 614
 615
 616 // these functions are for the spellchecker
 617 WordLangTuple const BufferView::nextWord(float & value)
 618 {
 619         if (!available()) {
 620                 value = 1;
 621                 return WordLangTuple();
 622         }
 623
 624         return text->selectNextWordToSpellcheck(this, value);
 625 }
 626
 627
 628 void BufferView::selectLastWord()
 629 {
 630         if (!available())
 631                 return;
 632
 633         LyXCursor cur = text->selection.cursor;
 634         hideCursor();
 635         beforeChange(text);
 636         text->selection.cursor = cur;
 637         text->selectSelectedWord(this);
 638         toggleSelection(false);
 639         update(text, BufferView::SELECT|BufferView::FITCUR);
 640 }
 641
 642
 643 void BufferView::endOfSpellCheck()
 644 {
 645         if (!available()) return;
 646
 647         hideCursor();
 648         beforeChange(text);
 649         text->selectSelectedWord(this);
 650         text->clearSelection();
 651         update(text, BufferView::SELECT|BufferView::FITCUR);
 652 }
 653
 654
 655 void BufferView::replaceWord(string const & replacestring)
 656 {
 657         if (!available())
 658                 return;
 659
 660         LyXText * tt = getLyXText();
 661         hideCursor();
 662         update(tt, BufferView::SELECT|BufferView::FITCUR);
 663
 664         // clear the selection (if there is any)
 665         toggleSelection(false);
 666         update(tt, BufferView::SELECT|BufferView::FITCUR);
 667
 668         // clear the selection (if there is any)
 669         toggleSelection(false);
 670         tt->replaceSelectionWithString(this, replacestring);
 671
 672         tt->setSelectionRange(this, replacestring.length());
 673
 674         // Go back so that replacement string is also spellchecked
 675         for (string::size_type i = 0; i < replacestring.length() + 1; ++i) {
 676                 tt->cursorLeft(this);
 677         }
 678         update(tt, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 679 }
 680 // End of spellchecker stuff
 681
 682
 683 bool BufferView::lockInset(UpdatableInset * inset)
 684 {
 685         if (!inset)
 686                 return false;
 687         // don't relock if we're already locked
 688         if (theLockingInset() == inset)
 689                 return true;
 690         if (!theLockingInset()) {
 691                 // first check if it's the inset under the cursor we want lock
 692                 // should be most of the time
 693                 char const c = text->cursor.par()->getChar(text->cursor.pos());
 694                 if (c == Paragraph::META_INSET) {
 695                         Inset * in = text->cursor.par()->getInset(text->cursor.pos());
 696                         if (inset == in) {
 697                                 theLockingInset(inset);
 698                                 return true;
 699                         }
 700                 }
 701                 // Then do a deep look of the inset and lock the right one
 702                 int const id = inset->id();
 703                 ParagraphList::iterator pit = buffer()->paragraphs.begin();
 704                 ParagraphList::iterator pend = buffer()->paragraphs.end();
 705                 for (; pit != pend; ++pit) {
 706                         InsetList::iterator it = pit->insetlist.begin();
 707                         InsetList::iterator end = pit->insetlist.end();
 708                         for (; it != end; ++it) {
 709                                 if (it.getInset() == inset) {
 710                                         text->setCursorIntern(this, &*pit, it.getPos());
 711                                         theLockingInset(inset);
 712                                         return true;
 713                                 }
 714                                 if (it.getInset()->getInsetFromID(id)) {
 715                                         text->setCursorIntern(this, &*pit, it.getPos());
 716                                         it.getInset()->edit(this);
 717                                         return theLockingInset()->lockInsetInInset(this, inset);
 718                                 }
 719                         }
 720                 }
 721                 return false;
 722         }
 723         return theLockingInset()->lockInsetInInset(this, inset);
 724 }
 725
 726
 727 void BufferView::showLockedInsetCursor(int x, int y, int asc, int desc)
 728 {
 729         if (available() && theLockingInset() && !theLockingInset()->nodraw()) {
 730                 LyXCursor cursor = text->cursor;
 731                 Inset * locking_inset = theLockingInset()->getLockingInset();
 732
 733                 if ((cursor.pos() - 1 >= 0) &&
 734                     cursor.par()->isInset(cursor.pos() - 1) &&
 735                     (cursor.par()->getInset(cursor.pos() - 1) ==
 736                      locking_inset))
 737                         text->setCursor(this, cursor,
 738                                         cursor.par(), cursor.pos() - 1);
 739                 LyXScreen::Cursor_Shape shape = LyXScreen::BAR_SHAPE;
 740                 LyXText * txt = getLyXText();
 741                 if (locking_inset->isTextInset() &&
 742                     locking_inset->lyxCode() != Inset::ERT_CODE &&
 743                     (txt->real_current_font.language() !=
 744                      buffer()->params.language
 745                      || txt->real_current_font.isVisibleRightToLeft()
 746                      != buffer()->params.language->RightToLeft()))
 747                         shape = (txt->real_current_font.isVisibleRightToLeft())
 748                                 ? LyXScreen::REVERSED_L_SHAPE
 749                                 : LyXScreen::L_SHAPE;
 750                 y += cursor.iy() + theLockingInset()->insetInInsetY();
 751                 screen().showManualCursor(text, x, y, asc, desc,
 752                                                   shape);
 753         }
 754 }
 755
 756
 757 void BufferView::hideLockedInsetCursor()
 758 {
 759         if (theLockingInset() && available()) {
 760                 screen().hideCursor();
 761         }
 762 }
 763
 764
 765 bool BufferView::fitLockedInsetCursor(int x, int y, int asc, int desc)
 766 {
 767         if (theLockingInset() && available()) {
 768                 y += text->cursor.iy() + theLockingInset()->insetInInsetY();
 769                 if (screen().fitManualCursor(this, text, x, y, asc, desc)) {
 770                         updateScrollbar();
 771                         return true;
 772                 }
 773         }
 774         return false;
 775 }
 776
 777
 778 int BufferView::unlockInset(UpdatableInset * inset)
 779 {
 780         if (!inset)
 781                 return 0;
 782         if (inset && theLockingInset() == inset) {
 783                 inset->insetUnlock(this);
 784                 theLockingInset(0);
 785                 // make sure we update the combo !
 786                 owner()->setLayout(getLyXText()->cursor.par()->layout()->name());
 787                 // Tell the paragraph dialog that we changed paragraph
 788                 owner()->getDialogs().updateParagraph();
 789                 finishUndo();
 790                 return 0;
 791         } else if (inset && theLockingInset() &&
 792                    theLockingInset()->unlockInsetInInset(this, inset)) {
 793                 // Tell the paragraph dialog that we changed paragraph
 794                 owner()->getDialogs().updateParagraph();
 795                 // owner inset has updated the layout combo
 796                 finishUndo();
 797                 return 0;
 798         }
 799         return 1;
 800 }
 801
 802
 803 void BufferView::lockedInsetStoreUndo(Undo::undo_kind kind)
 804 {
 805         if (!theLockingInset())
 806                 return; // shouldn't happen
 807         if (kind == Undo::EDIT) // in this case insets would not be stored!
 808                 kind = Undo::FINISH;
 809         setUndo(this, kind,
 810                 text->cursor.par(),
 811                 text->cursor.par()->next());
 812 }
 813
 814
 815 void BufferView::updateInset(Inset * inset, bool mark_dirty)
 816 {
 817         pimpl_->updateInset(inset, mark_dirty);
 818 }
 819
 820
 821 bool BufferView::ChangeInsets(Inset::Code code,
 822                               string const & from, string const & to)
 823 {
 824         bool need_update = false;
 825         LyXCursor cursor = text->cursor;
 826         LyXCursor tmpcursor = cursor;
 827         cursor.par(tmpcursor.par());
 828         cursor.pos(tmpcursor.pos());
 829
 830         ParIterator end = buffer()->par_iterator_end();
 831         for (ParIterator it = buffer()->par_iterator_begin();
 832              it != end; ++it) {
 833                 Paragraph * par = *it;
 834                 bool changed_inset = false;
 835                 for (InsetList::iterator it2 = par->insetlist.begin();
 836                      it2 != par->insetlist.end(); ++it2) {
 837                         if (it2.getInset()->lyxCode() == code) {
 838                                 InsetCommand * inset = static_cast<InsetCommand *>(it2.getInset());
 839                                 if (inset->getContents() == from) {
 840                                         inset->setContents(to);
 841                                         changed_inset = true;
 842                                 }
 843                         }
 844                 }
 845                 if (changed_inset) {
 846                         need_update = true;
 847
 848                         // FIXME
 849
 850                         // The test it.size()==1 was needed to prevent crashes.
 851                         // How to set the cursor corretly when it.size()>1 ??
 852                         if (it.size() == 1) {
 853                                 text->setCursorIntern(this, par, 0);
 854                                 text->redoParagraphs(this, text->cursor,
 855                                                      text->cursor.par()->next());
 856                                 text->fullRebreak(this);
 857                         }
 858                 }
 859         }
 860         text->setCursorIntern(this, cursor.par(), cursor.pos());
 861         return need_update;
 862 }
 863
 864
 865 bool BufferView::ChangeRefsIfUnique(string const & from, string const & to)
 866 {
 867         // Check if the label 'from' appears more than once
 868         vector<string> labels = buffer()->getLabelList();
 869
 870         if (lyx::count(labels.begin(), labels.end(), from) > 1)
 871                 return false;
 872
 873         return ChangeInsets(Inset::REF_CODE, from, to);
 874 }
 875
 876
 877 bool BufferView::ChangeCitationsIfUnique(string const & from, string const & to)
 878 {
 879         typedef pair<string, string> StringPair;
 880
 881         vector<StringPair> keys;
 882         buffer()->fillWithBibKeys(keys);
 883         if (count_if(keys.begin(), keys.end(),
 884                      lyx::equal_1st_in_pair<StringPair>(from))
 885             > 1)
 886                 return false;
 887
 888         return ChangeInsets(Inset::CITE_CODE, from, to);
 889 }
 890
 891
 892 UpdatableInset * BufferView::theLockingInset() const
 893 {
 894         // If NULL is not allowed we should put an Assert here. (Lgb)
 895         if (text)
 896                 return text->the_locking_inset;
 897         return 0;
 898 }
 899
 900
 901 void BufferView::theLockingInset(UpdatableInset * inset)
 902 {
 903         text->the_locking_inset = inset;
 904 }
 905
 906
 907 LyXText * BufferView::getLyXText() const
 908 {
 909         if (theLockingInset()) {
 910                 LyXText * txt = theLockingInset()->getLyXText(this, true);
 911                 if (txt)
 912                         return txt;
 913         }
 914         return text;
 915 }
 916
 917
 918 LyXText * BufferView::getParentText(Inset * inset) const
 919 {
 920         if (inset->owner()) {
 921                 LyXText * txt = inset->getLyXText(this);
 922                 inset = inset->owner();
 923                 while (inset && inset->getLyXText(this) == txt)
 924                         inset = inset->owner();
 925                 if (inset)
 926                         return inset->getLyXText(this);
 927         }
 928         return text;
 929 }
 930
 931
 932 Language const * BufferView::getParentLanguage(Inset * inset) const
 933 {
 934         LyXText * text = getParentText(inset);
 935         return text->cursor.par()->getFontSettings(buffer()->params,
 936                                                    text->cursor.pos()).language();
 937 }
 938
 939
 940 Encoding const * BufferView::getEncoding() const
 941 {
 942         LyXText * t = getLyXText();
 943         if (!t)
 944                 return 0;
 945
 946         LyXCursor const & c= t->cursor;
 947         LyXFont const font = c.par()->getFont(buffer()->params, c.pos());
 948         return font.language()->encoding();
 949 }
 950
 951
 952 void BufferView::haveSelection(bool sel)
 953 {
 954         pimpl_->workarea().haveSelection(sel);
 955 }
 956
 957
 958 int BufferView::workHeight() const
 959 {
 960         return pimpl_->workarea().workHeight();
 961 }