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 #ifdef __GNUG__
  13 #pragma implementation
  14 #endif
  15
  16 #include "BufferView.h"
  17 #include "BufferView_pimpl.h"
  18
  19 #include "BufferView_pimpl.h"
  20 #include "LaTeX.h"
  21 #include "WordLangTuple.h"
  22 #include "buffer.h"
  23 #include "bufferlist.h"
  24 #include "debug.h"
  25 #include "gettext.h"
  26 #include "iterators.h"
  27 #include "language.h"
  28 #include "lyxcursor.h"
  29 #include "lyxlex.h"
  30 #include "lyxtext.h"
  31 #include "undo_funcs.h"
  32
  33 #include "frontends/Alert.h"
  34 #include "frontends/Dialogs.h"
  35 #include "frontends/LyXView.h"
  36 #include "frontends/WorkArea.h"
  37 #include "frontends/screen.h"
  38
  39 #include "insets/insetcommand.h" // ChangeRefs
  40 #include "insets/inseterror.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()))
 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 void BufferView::beforeChange(LyXText * text)
 166 {
 167         pimpl_->beforeChange(text);
 168 }
 169
 170
 171 void BufferView::savePosition(unsigned int i)
 172 {
 173         pimpl_->savePosition(i);
 174 }
 175
 176
 177 void BufferView::restorePosition(unsigned int i)
 178 {
 179         pimpl_->restorePosition(i);
 180 }
 181
 182
 183 bool BufferView::isSavedPosition(unsigned int i)
 184 {
 185         return pimpl_->isSavedPosition(i);
 186 }
 187
 188
 189 void BufferView::update(LyXText * text, UpdateCodes f)
 190 {
 191         pimpl_->update(text, f);
 192 }
 193
 194
 195 void BufferView::switchKeyMap()
 196 {
 197         pimpl_->switchKeyMap();
 198 }
 199
 200
 201 void BufferView::insetUnlock()
 202 {
 203         pimpl_->insetUnlock();
 204 }
 205
 206
 207 int BufferView::workWidth() const
 208 {
 209         return pimpl_->workarea().workWidth();
 210 }
 211
 212
 213 void BufferView::showCursor()
 214 {
 215         pimpl_->showCursor();
 216 }
 217
 218
 219 void BufferView::hideCursor()
 220 {
 221         pimpl_->hideCursor();
 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 int BufferView::defaultHeight() const
 276 {
 277         return text->defaultHeight();
 278 }
 279
 280
 281
 282 // Inserts a file into current document
 283 bool BufferView::insertLyXFile(string const & filen)
 284         //
 285         // Copyright CHT Software Service GmbH
 286         // Uwe C. Schroeder
 287         //
 288         // Insert a LyXformat - file into current buffer
 289         //
 290         // Moved from lyx_cb.C (Lgb)
 291 {
 292         if (filen.empty())
 293                 return false;
 294
 295         string const fname = MakeAbsPath(filen);
 296
 297         // check if file exist
 298         FileInfo const fi(fname);
 299
 300         if (!fi.readable()) {
 301                 Alert::alert(_("Error!"),
 302                            _("Specified file is unreadable: "),
 303                            MakeDisplayPath(fname, 50));
 304                 return false;
 305         }
 306
 307         beforeChange(text);
 308
 309         ifstream ifs(fname.c_str());
 310         if (!ifs) {
 311                 Alert::err_alert(_("Error! Cannot open specified file:"),
 312                            MakeDisplayPath(fname, 50));
 313                 return false;
 314         }
 315
 316         int const c = ifs.peek();
 317
 318         LyXLex lex(0, 0);
 319         lex.setStream(ifs);
 320
 321         bool res = true;
 322
 323         if (c == '#') {
 324                 lyxerr[Debug::INFO] << "Will insert file with header" << endl;
 325                 res = buffer()->readFile(lex, fname, text->cursor.par());
 326         } else {
 327                 lyxerr[Debug::INFO] << "Will insert file without header"
 328                                     << endl;
 329                 res = buffer()->readLyXformat2(lex, text->cursor.par());
 330         }
 331
 332         resize();
 333         return res;
 334 }
 335
 336
 337 bool BufferView::removeAutoInsets()
 338 {
 339         // keep track of which pos and par the cursor was on
 340         Paragraph * cursor_par = text->cursor.par();
 341         Paragraph * cursor_par_prev = cursor_par ? cursor_par->previous() : 0;
 342         Paragraph * cursor_par_next = cursor_par ? cursor_par->next() : 0;
 343         pos_type cursor_pos = text->cursor.pos();
 344
 345         bool found = false;
 346
 347         // Trap the deletion of the paragraph the cursor is in.
 348         // Iterate until we find a paragraph that won't be immediately deleted.
 349         // In reality this should mean we only execute the body of the while
 350         // loop once at most.  However for safety we iterate rather than just
 351         // make this an if () conditional.
 352         while ((cursor_par_prev || cursor_par_next)
 353                && text->setCursor(this,
 354                                   cursor_par_prev ? cursor_par_prev : cursor_par_next,
 355                                   0)) {
 356                 // We just removed cursor_par so have to fix the "cursor"
 357                 if (cursor_par_prev) {
 358                         // '.' = cursor_par
 359                         //  a -> a.
 360                         // .
 361                         cursor_par = cursor_par_prev;
 362                         cursor_pos = cursor_par->size();
 363                 } else {
 364                         // .  -> .a
 365                         //  a
 366                         cursor_par = cursor_par_next;
 367                         cursor_pos = 0;
 368                 }
 369                 cursor_par_prev = cursor_par->previous();
 370                 cursor_par_next = cursor_par->next();
 371         }
 372
 373         // Iterate through the paragraphs removing autoDelete insets as we go.
 374         // If the paragraph ends up empty after all the autoDelete insets are
 375         // removed that paragraph will be removed by the next setCursor() call.
 376         ParIterator it = buffer()->par_iterator_begin();
 377         ParIterator end = buffer()->par_iterator_end();
 378         for (; it != end; ++it) {
 379                 Paragraph * par = *it;
 380                 Paragraph * par_prev = par ? par->previous() : 0;
 381                 bool removed = false;
 382
 383                 if (text->setCursor(this, par, 0)
 384                     && cursor_par == par_prev) {
 385                         // The previous setCursor line was deleted and that
 386                         // was the cursor_par line.  This can only happen if an
 387                         // error box was the sole item on cursor_par.
 388                         // It is possible for cursor_par_prev to be stray if
 389                         // the line it pointed to only had a error box on it
 390                         // so we have to set it to a known correct value.
 391                         // This is often the same value it already had.
 392                         cursor_par_prev = par->previous();
 393                         if (cursor_par_prev) {
 394                                 // '|' = par, '.' = cursor_par, 'E' = error box
 395                                 // First step below may occur before while{}
 396                                 //  a    |a      a     a     a.
 397                                 //  E -> .E -> |.E -> .  -> |b
 398                                 // .      b      b    |b
 399                                 //  b
 400                                 cursor_par = cursor_par_prev;
 401                                 cursor_pos = cursor_par_prev->size();
 402                                 cursor_par_prev = cursor_par->previous();
 403                                 // cursor_par_next remains the same
 404                         } else if (cursor_par_next) {
 405                                 // First step below may occur before while{}
 406                                 // .
 407                                 //  E -> |.E -> |.  -> . -> .|a
 408                                 //  a      a      a    |a
 409                                 cursor_par = cursor_par_next;
 410                                 cursor_pos = 0;
 411                                 // cursor_par_prev remains unset
 412                                 cursor_par_next = cursor_par->next();
 413                         } else {
 414                                 // I can't find a way to trigger this
 415                                 // so it should be unreachable code
 416                                 // unless the buffer is corrupted.
 417                                 lyxerr << "BufferView::removeAutoInsets() is bad\n";
 418                         }
 419                 }
 420
 421                 InsetList::iterator pit = par->insetlist.begin();
 422                 InsetList::iterator pend = par->insetlist.end();
 423
 424                 while (pit != pend) {
 425                         if (pit.getInset()->autoDelete()) {
 426                                 removed = true;
 427                                 pos_type const pos = pit.getPos();
 428
 429                                 par->erase(pos);
 430                                 // We just invalidated par's inset iterators so
 431                                 // we get the next valid iterator position
 432                                 pit = par->insetlist.insetIterator(pos);
 433                                 // and ensure we have a valid end iterator.
 434                                 pend = par->insetlist.end();
 435
 436                                 if (cursor_par == par) {
 437                                         // update the saved cursor position
 438                                         if (cursor_pos > pos)
 439                                                 --cursor_pos;
 440                                 }
 441                         } else {
 442                                 ++pit;
 443                         }
 444                 }
 445                 if (removed) {
 446                         found = true;
 447                         text->redoParagraph(this);
 448                 }
 449         }
 450
 451         // It is possible that the last line is empty if it was cursor_par
 452         // and/or only had an error inset on it.  So we set the cursor to the
 453         // start of the doc to force its removal and ensure a valid saved cursor
 454         if (text->setCursor(this, text->ownerParagraph(), 0)
 455             && 0 == cursor_par_next) {
 456                 cursor_par = cursor_par_prev;
 457                 cursor_pos = cursor_par->size();
 458         } else if (cursor_pos > cursor_par->size()) {
 459                 // Some C-Enter lines were removed by the setCursor call which
 460                 // then invalidated cursor_pos. It could still be "wrong" because
 461                 // the cursor may appear to have jumped but since we collapsed
 462                 // some C-Enter lines this should be a reasonable compromise.
 463                 cursor_pos = cursor_par->size();
 464         }
 465
 466         // restore the original cursor in its corrected location.
 467         text->setCursorIntern(this, cursor_par, cursor_pos);
 468
 469         return found;
 470 }
 471
 472
 473 void BufferView::insertErrors(TeXErrors & terr)
 474 {
 475         // Save the cursor position
 476         LyXCursor cursor = text->cursor;
 477
 478         TeXErrors::Errors::const_iterator cit = terr.begin();
 479         TeXErrors::Errors::const_iterator end = terr.end();
 480         for (; cit != end; ++cit) {
 481                 string const desctext(cit->error_desc);
 482                 string const errortext(cit->error_text);
 483                 string const msgtxt = desctext + '\n' + errortext;
 484                 int const errorrow = cit->error_in_line;
 485
 486                 // Insert error string for row number
 487                 int tmpid = -1;
 488                 int tmppos = -1;
 489
 490                 if (buffer()->texrow.getIdFromRow(errorrow, tmpid, tmppos)) {
 491                         buffer()->texrow.increasePos(tmpid, tmppos);
 492                 }
 493
 494                 Paragraph * texrowpar = 0;
 495
 496                 if (tmpid == -1) {
 497                         texrowpar = text->ownerParagraph();
 498                         tmppos = 0;
 499                 } else {
 500                         texrowpar = buffer()->getParFromID(tmpid);
 501                 }
 502
 503                 if (texrowpar == 0)
 504                         continue;
 505
 506                 freezeUndo();
 507                 InsetError * new_inset = new InsetError(msgtxt);
 508                 text->setCursorIntern(this, texrowpar, tmppos);
 509                 text->insertInset(this, new_inset);
 510                 text->fullRebreak(this);
 511                 unFreezeUndo();
 512         }
 513         // Restore the cursor position
 514         text->setCursorIntern(this, cursor.par(), cursor.pos());
 515 }
 516
 517
 518 void BufferView::setCursorFromRow(int row)
 519 {
 520         int tmpid = -1;
 521         int tmppos = -1;
 522
 523         buffer()->texrow.getIdFromRow(row, tmpid, tmppos);
 524
 525         Paragraph * texrowpar;
 526
 527         if (tmpid == -1) {
 528                 texrowpar = text->ownerParagraph();
 529                 tmppos = 0;
 530         } else {
 531                 texrowpar = buffer()->getParFromID(tmpid);
 532         }
 533         text->setCursor(this, texrowpar, tmppos);
 534 }
 535
 536
 537 bool BufferView::insertInset(Inset * inset, string const & lout)
 538 {
 539         return pimpl_->insertInset(inset, lout);
 540 }
 541
 542
 543 // This is also a buffer property (ale)
 544 // Not so sure about that. a goto Label function can not be buffer local, just
 545 // think how this will work in a multiwindow/buffer environment, all the
 546 // cursors in all the views showing this buffer will move. (Lgb)
 547 // OK, then no cursor action should be allowed in buffer. (ale)
 548 bool BufferView::gotoLabel(string const & label)
 549 {
 550         for (Buffer::inset_iterator it = buffer()->inset_iterator_begin();
 551              it != buffer()->inset_iterator_end(); ++it) {
 552                 vector<string> labels = it->getLabelList();
 553                 if (find(labels.begin(),labels.end(),label)
 554                      != labels.end()) {
 555                         beforeChange(text);
 556                         text->setCursor(this, it.getPar(), it.getPos());
 557                         text->selection.cursor = text->cursor;
 558                         update(text, BufferView::SELECT|BufferView::FITCUR);
 559                         return true;
 560                 }
 561         }
 562         return false;
 563 }
 564
 565
 566 void BufferView::undo()
 567 {
 568         if (!available())
 569                 return;
 570
 571         owner()->message(_("Undo"));
 572         hideCursor();
 573         beforeChange(text);
 574         update(text, BufferView::SELECT|BufferView::FITCUR);
 575         if (!textUndo(this))
 576                 owner()->message(_("No further undo information"));
 577         else
 578                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 579         switchKeyMap();
 580 }
 581
 582
 583 void BufferView::redo()
 584 {
 585         if (!available())
 586                 return;
 587
 588         owner()->message(_("Redo"));
 589         hideCursor();
 590         beforeChange(text);
 591         update(text, BufferView::SELECT|BufferView::FITCUR);
 592         if (!textRedo(this))
 593                 owner()->message(_("No further redo information"));
 594         else
 595                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 596         switchKeyMap();
 597 }
 598
 599
 600 void BufferView::copyEnvironment()
 601 {
 602         if (available()) {
 603                 text->copyEnvironmentType();
 604                 owner()->message(_("Paragraph environment type copied"));
 605         }
 606 }
 607
 608
 609 void BufferView::pasteEnvironment()
 610 {
 611         if (available()) {
 612                 text->pasteEnvironmentType(this);
 613                 owner()->message(_("Paragraph environment type set"));
 614                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 615         }
 616 }
 617
 618
 619 // these functions are for the spellchecker
 620 WordLangTuple const BufferView::nextWord(float & value)
 621 {
 622         if (!available()) {
 623                 value = 1;
 624                 return WordLangTuple();
 625         }
 626
 627         return text->selectNextWordToSpellcheck(this, value);
 628 }
 629
 630
 631 void BufferView::selectLastWord()
 632 {
 633         if (!available())
 634                 return;
 635
 636         LyXCursor cur = text->selection.cursor;
 637         hideCursor();
 638         beforeChange(text);
 639         text->selection.cursor = cur;
 640         text->selectSelectedWord(this);
 641         toggleSelection(false);
 642         update(text, BufferView::SELECT|BufferView::FITCUR);
 643 }
 644
 645
 646 void BufferView::endOfSpellCheck()
 647 {
 648         if (!available()) return;
 649
 650         hideCursor();
 651         beforeChange(text);
 652         text->selectSelectedWord(this);
 653         text->clearSelection();
 654         update(text, BufferView::SELECT|BufferView::FITCUR);
 655 }
 656
 657
 658 void BufferView::replaceWord(string const & replacestring)
 659 {
 660         if (!available())
 661                 return;
 662
 663         LyXText * tt = getLyXText();
 664         hideCursor();
 665         update(tt, BufferView::SELECT|BufferView::FITCUR);
 666
 667         // clear the selection (if there is any)
 668         toggleSelection(false);
 669         update(tt, BufferView::SELECT|BufferView::FITCUR);
 670
 671         // clear the selection (if there is any)
 672         toggleSelection(false);
 673         tt->replaceSelectionWithString(this, replacestring);
 674
 675         tt->setSelectionOverString(this, replacestring);
 676
 677         // Go back so that replacement string is also spellchecked
 678         for (string::size_type i = 0; i < replacestring.length() + 1; ++i) {
 679                 tt->cursorLeft(this);
 680         }
 681         update(tt, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 682 }
 683 // End of spellchecker stuff
 684
 685
 686 bool BufferView::lockInset(UpdatableInset * inset)
 687 {
 688         if (!inset)
 689                 return false;
 690         // don't relock if we're already locked
 691         if (theLockingInset() == inset)
 692                 return true;
 693         if (!theLockingInset()) {
 694                 // first check if it's the inset under the cursor we want lock
 695                 // should be most of the time
 696                 char const c = text->cursor.par()->getChar(text->cursor.pos());
 697                 if (c == Paragraph::META_INSET) {
 698                         Inset * in = text->cursor.par()->getInset(text->cursor.pos());
 699                         if (inset == in) {
 700                                 theLockingInset(inset);
 701                                 return true;
 702                         }
 703                 }
 704                 // Then do a deep look of the inset and lock the right one
 705                 int const id = inset->id();
 706                 ParagraphList::iterator pit = buffer()->paragraphs.begin();
 707                 ParagraphList::iterator pend = buffer()->paragraphs.end();
 708                 for (; pit != pend; ++pit) {
 709                         InsetList::iterator it = pit->insetlist.begin();
 710                         InsetList::iterator end = pit->insetlist.end();
 711                         for (; it != end; ++it) {
 712                                 if (it.getInset() == inset) {
 713                                         text->setCursorIntern(this, &*pit, it.getPos());
 714                                         theLockingInset(inset);
 715                                         return true;
 716                                 }
 717                                 if (it.getInset()->getInsetFromID(id)) {
 718                                         text->setCursorIntern(this, &*pit, it.getPos());
 719                                         it.getInset()->edit(this);
 720                                         return theLockingInset()->lockInsetInInset(this, inset);
 721                                 }
 722                         }
 723                 }
 724                 return false;
 725         }
 726         return theLockingInset()->lockInsetInInset(this, inset);
 727 }
 728
 729
 730 void BufferView::showLockedInsetCursor(int x, int y, int asc, int desc)
 731 {
 732         if (available() && theLockingInset() && !theLockingInset()->nodraw()) {
 733                 LyXCursor cursor = text->cursor;
 734                 Inset * locking_inset = theLockingInset()->getLockingInset();
 735
 736                 if ((cursor.pos() - 1 >= 0) &&
 737                     cursor.par()->isInset(cursor.pos() - 1) &&
 738                     (cursor.par()->getInset(cursor.pos() - 1) ==
 739                      locking_inset))
 740                         text->setCursor(this, cursor,
 741                                         cursor.par(), cursor.pos() - 1);
 742                 LyXScreen::Cursor_Shape shape = LyXScreen::BAR_SHAPE;
 743                 LyXText * txt = getLyXText();
 744                 if (locking_inset->isTextInset() &&
 745                     locking_inset->lyxCode() != Inset::ERT_CODE &&
 746                     (txt->real_current_font.language() !=
 747                      buffer()->params.language
 748                      || txt->real_current_font.isVisibleRightToLeft()
 749                      != buffer()->params.language->RightToLeft()))
 750                         shape = (txt->real_current_font.isVisibleRightToLeft())
 751                                 ? LyXScreen::REVERSED_L_SHAPE
 752                                 : LyXScreen::L_SHAPE;
 753                 y += cursor.iy() + theLockingInset()->insetInInsetY();
 754                 screen().showManualCursor(text, x, y, asc, desc,
 755                                                   shape);
 756         }
 757 }
 758
 759
 760 void BufferView::hideLockedInsetCursor()
 761 {
 762         if (theLockingInset() && available()) {
 763                 screen().hideCursor();
 764         }
 765 }
 766
 767
 768 bool BufferView::fitLockedInsetCursor(int x, int y, int asc, int desc)
 769 {
 770         if (theLockingInset() && available()) {
 771                 y += text->cursor.iy() + theLockingInset()->insetInInsetY();
 772                 if (screen().fitManualCursor(this, text, x, y, asc, desc)) {
 773                         updateScrollbar();
 774                         return true;
 775                 }
 776         }
 777         return false;
 778 }
 779
 780
 781 int BufferView::unlockInset(UpdatableInset * inset)
 782 {
 783         if (!inset)
 784                 return 0;
 785         if (inset && theLockingInset() == inset) {
 786                 inset->insetUnlock(this);
 787                 theLockingInset(0);
 788                 // make sure we update the combo !
 789                 owner()->setLayout(getLyXText()->cursor.par()->layout()->name());
 790                 // Tell the paragraph dialog that we changed paragraph
 791                 owner()->getDialogs().updateParagraph();
 792                 finishUndo();
 793                 return 0;
 794         } else if (inset && theLockingInset() &&
 795                    theLockingInset()->unlockInsetInInset(this, inset)) {
 796                 // Tell the paragraph dialog that we changed paragraph
 797                 owner()->getDialogs().updateParagraph();
 798                 // owner inset has updated the layout combo
 799                 finishUndo();
 800                 return 0;
 801         }
 802         return bufferlist.unlockInset(inset);
 803 }
 804
 805
 806 void BufferView::lockedInsetStoreUndo(Undo::undo_kind kind)
 807 {
 808         if (!theLockingInset())
 809                 return; // shouldn't happen
 810         if (kind == Undo::EDIT) // in this case insets would not be stored!
 811                 kind = Undo::FINISH;
 812         setUndo(this, kind,
 813                 text->cursor.par(),
 814                 text->cursor.par()->next());
 815 }
 816
 817
 818 void BufferView::updateInset(Inset * inset, bool mark_dirty)
 819 {
 820         pimpl_->updateInset(inset, mark_dirty);
 821 }
 822
 823
 824 bool BufferView::ChangeInsets(Inset::Code code,
 825                               string const & from, string const & to)
 826 {
 827         bool need_update = false;
 828         LyXCursor cursor = text->cursor;
 829         LyXCursor tmpcursor = cursor;
 830         cursor.par(tmpcursor.par());
 831         cursor.pos(tmpcursor.pos());
 832
 833         ParIterator end = buffer()->par_iterator_end();
 834         for (ParIterator it = buffer()->par_iterator_begin();
 835              it != end; ++it) {
 836                 Paragraph * par = *it;
 837                 bool changed_inset = false;
 838                 for (InsetList::iterator it2 = par->insetlist.begin();
 839                      it2 != par->insetlist.end(); ++it2) {
 840                         if (it2.getInset()->lyxCode() == code) {
 841                                 InsetCommand * inset = static_cast<InsetCommand *>(it2.getInset());
 842                                 if (inset->getContents() == from) {
 843                                         inset->setContents(to);
 844                                         changed_inset = true;
 845                                 }
 846                         }
 847                 }
 848                 if (changed_inset) {
 849                         need_update = true;
 850
 851                         // FIXME
 852
 853                         // The test it.size()==1 was needed to prevent crashes.
 854                         // How to set the cursor corretly when it.size()>1 ??
 855                         if (it.size() == 1) {
 856                                 text->setCursorIntern(this, par, 0);
 857                                 text->redoParagraphs(this, text->cursor,
 858                                                      text->cursor.par()->next());
 859                                 text->fullRebreak(this);
 860                         }
 861                 }
 862         }
 863         text->setCursorIntern(this, cursor.par(), cursor.pos());
 864         return need_update;
 865 }
 866
 867
 868 bool BufferView::ChangeRefsIfUnique(string const & from, string const & to)
 869 {
 870         // Check if the label 'from' appears more than once
 871         vector<string> labels = buffer()->getLabelList();
 872
 873         if (lyx::count(labels.begin(), labels.end(), from) > 1)
 874                 return false;
 875
 876         return ChangeInsets(Inset::REF_CODE, from, to);
 877 }
 878
 879
 880 bool BufferView::ChangeCitationsIfUnique(string const & from,
 881                                          string const & to)
 882 {
 883         typedef pair<string, string> StringPair;
 884
 885         vector<StringPair> keys = buffer()->getBibkeyList();
 886         if (count_if(keys.begin(), keys.end(),
 887                      lyx::equal_1st_in_pair<StringPair>(from))
 888             > 1)
 889                 return false;
 890
 891         return ChangeInsets(Inset::CITE_CODE, from, to);
 892 }
 893
 894
 895 UpdatableInset * BufferView::theLockingInset() const
 896 {
 897         // If NULL is not allowed we should put an Assert here. (Lgb)
 898         if (text)
 899                 return text->the_locking_inset;
 900         return 0;
 901 }
 902
 903
 904 void BufferView::theLockingInset(UpdatableInset * inset)
 905 {
 906         text->the_locking_inset = inset;
 907 }
 908
 909
 910 LyXText * BufferView::getLyXText() const
 911 {
 912         if (theLockingInset()) {
 913                 LyXText * txt = theLockingInset()->getLyXText(this, true);
 914                 if (txt)
 915                         return txt;
 916         }
 917         return text;
 918 }
 919
 920
 921 LyXText * BufferView::getParentText(Inset * inset) const
 922 {
 923         if (inset->owner()) {
 924                 LyXText * txt = inset->getLyXText(this);
 925                 inset = inset->owner();
 926                 while (inset && inset->getLyXText(this) == txt)
 927                         inset = inset->owner();
 928                 if (inset)
 929                         return inset->getLyXText(this);
 930         }
 931         return text;
 932 }
 933
 934
 935 Language const * BufferView::getParentLanguage(Inset * inset) const
 936 {
 937         LyXText * text = getParentText(inset);
 938         return text->cursor.par()->getFontSettings(buffer()->params,
 939                                                    text->cursor.pos()).language();
 940 }
 941
 942
 943 Encoding const * BufferView::getEncoding() const
 944 {
 945         LyXText * t = getLyXText();
 946         if (!t)
 947                 return 0;
 948
 949         LyXCursor const & c= t->cursor;
 950         LyXFont const font = c.par()->getFont(buffer()->params, c.pos());
 951         return font.language()->encoding();
 952 }
 953
 954
 955 void BufferView::haveSelection(bool sel)
 956 {
 957         pimpl_->workarea().haveSelection(sel);
 958 }
 959
 960
 961 int BufferView::workHeight() const
 962 {
 963         return pimpl_->workarea().workHeight();
 964 }