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 #include <cerrno>
  50
  51 extern BufferList bufferlist;
  52
  53 using lyx::pos_type;
  54
  55 using std::pair;
  56 using std::endl;
  57 using std::ifstream;
  58 using std::vector;
  59 using std::find;
  60 using std::count_if;
  61
  62
  63 BufferView::BufferView(LyXView * owner, int xpos, int ypos,
  64                        int width, int height)
  65         : pimpl_(new Pimpl(this, owner, xpos, ypos, width, height))
  66 {
  67         text = 0;
  68 }
  69
  70
  71 BufferView::~BufferView()
  72 {
  73         delete text;
  74         delete pimpl_;
  75 }
  76
  77
  78 Buffer * BufferView::buffer() const
  79 {
  80         return pimpl_->buffer_;
  81 }
  82
  83
  84 LyXScreen & BufferView::screen() const
  85 {
  86         return pimpl_->screen();
  87 }
  88
  89
  90 LyXView * BufferView::owner() const
  91 {
  92         return pimpl_->owner_;
  93 }
  94
  95
  96 Painter & BufferView::painter() const
  97 {
  98         return pimpl_->painter();
  99 }
 100
 101
 102 void BufferView::buffer(Buffer * b)
 103 {
 104         pimpl_->buffer(b);
 105 }
 106
 107
 108 void BufferView::reload()
 109 {
 110         string const fn = buffer()->fileName();
 111         if (bufferlist.close(buffer(), false))
 112                 buffer(bufferlist.loadLyXFile(fn));
 113 }
 114
 115
 116 void BufferView::resize()
 117 {
 118         if (pimpl_->buffer_) {
 119                 pimpl_->resizeCurrentBuffer();
 120         }
 121 }
 122
 123
 124 void BufferView::repaint()
 125 {
 126         pimpl_->repaint();
 127 }
 128
 129
 130 bool BufferView::fitCursor()
 131 {
 132         return pimpl_->fitCursor();
 133 }
 134
 135
 136 void BufferView::update()
 137 {
 138         pimpl_->update();
 139 }
 140
 141
 142 void BufferView::updateScrollbar()
 143 {
 144         pimpl_->updateScrollbar();
 145 }
 146
 147
 148 void BufferView::scrollDocView(int value)
 149 {
 150         pimpl_->scrollDocView(value);
 151 }
 152
 153
 154 void BufferView::redoCurrentBuffer()
 155 {
 156         pimpl_->redoCurrentBuffer();
 157 }
 158
 159
 160 bool BufferView::available() const
 161 {
 162         return pimpl_->available();
 163 }
 164
 165
 166 Change const BufferView::getCurrentChange()
 167 {
 168         return pimpl_->getCurrentChange();
 169 }
 170
 171
 172 void BufferView::beforeChange(LyXText * text)
 173 {
 174         pimpl_->beforeChange(text);
 175 }
 176
 177
 178 void BufferView::savePosition(unsigned int i)
 179 {
 180         pimpl_->savePosition(i);
 181 }
 182
 183
 184 void BufferView::restorePosition(unsigned int i)
 185 {
 186         pimpl_->restorePosition(i);
 187 }
 188
 189
 190 bool BufferView::isSavedPosition(unsigned int i)
 191 {
 192         return pimpl_->isSavedPosition(i);
 193 }
 194
 195
 196 void BufferView::update(LyXText * text, UpdateCodes f)
 197 {
 198         pimpl_->update(text, f);
 199 }
 200
 201
 202 void BufferView::update(UpdateCodes f)
 203 {
 204         pimpl_->update(f);
 205 }
 206
 207
 208 void BufferView::switchKeyMap()
 209 {
 210         pimpl_->switchKeyMap();
 211 }
 212
 213
 214 void BufferView::insetUnlock()
 215 {
 216         pimpl_->insetUnlock();
 217 }
 218
 219
 220 int BufferView::workWidth() const
 221 {
 222         return pimpl_->workarea().workWidth();
 223 }
 224
 225
 226 void BufferView::showCursor()
 227 {
 228         pimpl_->showCursor();
 229 }
 230
 231
 232 void BufferView::hideCursor()
 233 {
 234         pimpl_->hideCursor();
 235 }
 236
 237
 238 void BufferView::toggleSelection(bool b)
 239 {
 240         pimpl_->toggleSelection(b);
 241 }
 242
 243
 244 void BufferView::toggleToggle()
 245 {
 246         pimpl_->toggleToggle();
 247 }
 248
 249
 250 void BufferView::center()
 251 {
 252         pimpl_->center();
 253 }
 254
 255
 256 string const BufferView::getClipboard() const
 257 {
 258         return pimpl_->workarea().getClipboard();
 259 }
 260
 261
 262 void BufferView::stuffClipboard(string const & stuff) const
 263 {
 264         pimpl_->stuffClipboard(stuff);
 265 }
 266
 267
 268 BufferView::UpdateCodes operator|(BufferView::UpdateCodes uc1,
 269                                   BufferView::UpdateCodes uc2)
 270 {
 271         return static_cast<BufferView::UpdateCodes>
 272                 (static_cast<int>(uc1) | static_cast<int>(uc2));
 273 }
 274
 275
 276 bool BufferView::dispatch(FuncRequest const & ev)
 277 {
 278         return pimpl_->dispatch(ev);
 279 }
 280
 281
 282 void BufferView::scroll(int lines)
 283 {
 284         pimpl_->scroll(lines);
 285 }
 286
 287
 288 // Inserts a file into current document
 289 bool BufferView::insertLyXFile(string const & filen)
 290         //
 291         // Copyright CHT Software Service GmbH
 292         // Uwe C. Schroeder
 293         //
 294         // Insert a LyXformat - file into current buffer
 295         //
 296         // Moved from lyx_cb.C (Lgb)
 297 {
 298         if (filen.empty())
 299                 return false;
 300
 301         string const fname = MakeAbsPath(filen);
 302
 303         // check if file exist
 304         FileInfo const fi(fname);
 305
 306         if (!fi.readable()) {
 307                 string const file = MakeDisplayPath(fname, 50);
 308 #if USE_BOOST_FORMAT
 309                 boost::format fmt(_("The specified document\n%1$s\ncould not be read."));
 310                 fmt % file;
 311                 string text = fmt.str();
 312 #else
 313                 string text = _("The specified document\n");
 314                 text += file + _(" could not be read.");
 315 #endif
 316                 Alert::error(_("Could not read document"), text);
 317                 return false;
 318         }
 319
 320         beforeChange(text);
 321
 322         ifstream ifs(fname.c_str());
 323         if (!ifs) {
 324                 string const error = strerror(errno);
 325                 string const file = MakeDisplayPath(fname, 50);
 326 #if USE_BOOST_FORMAT
 327                 boost::format fmt(_("Could not open the specified document\n%1$s\ndue to the error: %2$s"));
 328                 fmt % file;
 329                 fmt % error;
 330                 string text = fmt.str();
 331 #else
 332                 string text = _("Could not open the specified document\n");
 333                 text += file + _(" due to the error: ");
 334                 text += error;
 335 #endif
 336                 Alert::error(_("Could not open file"), text);
 337                 return false;
 338         }
 339
 340         int const c = ifs.peek();
 341
 342         LyXLex lex(0, 0);
 343         lex.setStream(ifs);
 344
 345         bool res = true;
 346
 347         if (c == '#') {
 348                 // FIXME: huh ? No we won't !
 349                 lyxerr[Debug::INFO] << "Will insert file with header" << endl;
 350                 res = buffer()->readFile(lex, fname, ParagraphList::iterator(text->cursor.par()));
 351         } else {
 352                 lyxerr[Debug::INFO] << "Will insert file without header"
 353                                     << endl;
 354                 res = buffer()->readBody(lex, ParagraphList::iterator(text->cursor.par()));
 355         }
 356
 357         resize();
 358         return res;
 359 }
 360
 361
 362 bool BufferView::removeAutoInsets()
 363 {
 364         // keep track of which pos and par the cursor was on
 365         Paragraph * cursor_par = text->cursor.par();
 366         Paragraph * cursor_par_prev = cursor_par ? cursor_par->previous() : 0;
 367         Paragraph * cursor_par_next = cursor_par ? cursor_par->next() : 0;
 368         pos_type cursor_pos = text->cursor.pos();
 369
 370         bool found = false;
 371
 372         // Trap the deletion of the paragraph the cursor is in.
 373         // Iterate until we find a paragraph that won't be immediately deleted.
 374         // In reality this should mean we only execute the body of the while
 375         // loop once at most.  However for safety we iterate rather than just
 376         // make this an if () conditional.
 377         while ((cursor_par_prev || cursor_par_next)
 378                && text->setCursor(
 379                                   cursor_par_prev ? cursor_par_prev : cursor_par_next,
 380                                   0)) {
 381                 // We just removed cursor_par so have to fix the "cursor"
 382                 if (cursor_par_prev) {
 383                         // '.' = cursor_par
 384                         //  a -> a.
 385                         // .
 386                         cursor_par = cursor_par_prev;
 387                         cursor_pos = cursor_par->size();
 388                 } else {
 389                         // .  -> .a
 390                         //  a
 391                         cursor_par = cursor_par_next;
 392                         cursor_pos = 0;
 393                 }
 394                 cursor_par_prev = cursor_par->previous();
 395                 cursor_par_next = cursor_par->next();
 396         }
 397
 398         // Iterate through the paragraphs removing autoDelete insets as we go.
 399         // If the paragraph ends up empty after all the autoDelete insets are
 400         // removed that paragraph will be removed by the next setCursor() call.
 401         ParIterator it = buffer()->par_iterator_begin();
 402         ParIterator end = buffer()->par_iterator_end();
 403         for (; it != end; ++it) {
 404                 Paragraph * par = *it;
 405                 Paragraph * par_prev = par ? par->previous() : 0;
 406                 bool removed = false;
 407
 408                 if (text->setCursor(par, 0)
 409                     && cursor_par == par_prev) {
 410                         // The previous setCursor line was deleted and that
 411                         // was the cursor_par line.  This can only happen if an
 412                         // error box was the sole item on cursor_par.
 413                         // It is possible for cursor_par_prev to be stray if
 414                         // the line it pointed to only had a error box on it
 415                         // so we have to set it to a known correct value.
 416                         // This is often the same value it already had.
 417                         cursor_par_prev = par->previous();
 418                         if (cursor_par_prev) {
 419                                 // '|' = par, '.' = cursor_par, 'E' = error box
 420                                 // First step below may occur before while{}
 421                                 //  a    |a      a     a     a.
 422                                 //  E -> .E -> |.E -> .  -> |b
 423                                 // .      b      b    |b
 424                                 //  b
 425                                 cursor_par = cursor_par_prev;
 426                                 cursor_pos = cursor_par_prev->size();
 427                                 cursor_par_prev = cursor_par->previous();
 428                                 // cursor_par_next remains the same
 429                         } else if (cursor_par_next) {
 430                                 // First step below may occur before while{}
 431                                 // .
 432                                 //  E -> |.E -> |.  -> . -> .|a
 433                                 //  a      a      a    |a
 434                                 cursor_par = cursor_par_next;
 435                                 cursor_pos = 0;
 436                                 // cursor_par_prev remains unset
 437                                 cursor_par_next = cursor_par->next();
 438                         } else {
 439                                 // I can't find a way to trigger this
 440                                 // so it should be unreachable code
 441                                 // unless the buffer is corrupted.
 442                                 lyxerr << "BufferView::removeAutoInsets() is bad\n";
 443                         }
 444                 }
 445
 446                 InsetList::iterator pit = par->insetlist.begin();
 447                 InsetList::iterator pend = par->insetlist.end();
 448
 449                 while (pit != pend) {
 450                         if (pit.getInset()->autoDelete()) {
 451                                 removed = true;
 452                                 pos_type const pos = pit.getPos();
 453
 454                                 par->erase(pos);
 455                                 // We just invalidated par's inset iterators so
 456                                 // we get the next valid iterator position
 457                                 pit = par->insetlist.insetIterator(pos);
 458                                 // and ensure we have a valid end iterator.
 459                                 pend = par->insetlist.end();
 460
 461                                 if (cursor_par == par) {
 462                                         // update the saved cursor position
 463                                         if (cursor_pos > pos)
 464                                                 --cursor_pos;
 465                                 }
 466                         } else {
 467                                 ++pit;
 468                         }
 469                 }
 470                 if (removed) {
 471                         found = true;
 472                         text->redoParagraph();
 473                 }
 474         }
 475
 476         // It is possible that the last line is empty if it was cursor_par
 477         // and/or only had an error inset on it.  So we set the cursor to the
 478         // start of the doc to force its removal and ensure a valid saved cursor
 479         if (text->setCursor(text->ownerParagraph(), 0)
 480             && 0 == cursor_par_next) {
 481                 cursor_par = cursor_par_prev;
 482                 cursor_pos = cursor_par->size();
 483         } else if (cursor_pos > cursor_par->size()) {
 484                 // Some C-Enter lines were removed by the setCursor call which
 485                 // then invalidated cursor_pos. It could still be "wrong" because
 486                 // the cursor may appear to have jumped but since we collapsed
 487                 // some C-Enter lines this should be a reasonable compromise.
 488                 cursor_pos = cursor_par->size();
 489         }
 490
 491         // restore the original cursor in its corrected location.
 492         text->setCursorIntern(cursor_par, cursor_pos);
 493
 494         return found;
 495 }
 496
 497
 498 void BufferView::insertErrors(TeXErrors & terr)
 499 {
 500         // Save the cursor position
 501         LyXCursor cursor = text->cursor;
 502
 503         TeXErrors::Errors::const_iterator cit = terr.begin();
 504         TeXErrors::Errors::const_iterator end = terr.end();
 505         for (; cit != end; ++cit) {
 506                 string const desctext(cit->error_desc);
 507                 string const errortext(cit->error_text);
 508                 string const msgtxt = desctext + '\n' + errortext;
 509                 int const errorrow = cit->error_in_line;
 510
 511                 // Insert error string for row number
 512                 int tmpid = -1;
 513                 int tmppos = -1;
 514
 515                 if (buffer()->texrow.getIdFromRow(errorrow, tmpid, tmppos)) {
 516                         buffer()->texrow.increasePos(tmpid, tmppos);
 517                 }
 518
 519                 Paragraph * texrowpar = 0;
 520
 521                 if (tmpid == -1) {
 522                         texrowpar = text->ownerParagraph();
 523                         tmppos = 0;
 524                 } else {
 525                         texrowpar = buffer()->getParFromID(tmpid);
 526                 }
 527
 528                 if (texrowpar == 0)
 529                         continue;
 530
 531                 freezeUndo();
 532                 InsetError * new_inset = new InsetError(msgtxt);
 533                 text->setCursorIntern(texrowpar, tmppos);
 534                 text->insertInset(new_inset);
 535                 text->fullRebreak();
 536                 unFreezeUndo();
 537         }
 538         // Restore the cursor position
 539         text->setCursorIntern(cursor.par(), cursor.pos());
 540 }
 541
 542
 543 void BufferView::setCursorFromRow(int row)
 544 {
 545         int tmpid = -1;
 546         int tmppos = -1;
 547
 548         buffer()->texrow.getIdFromRow(row, tmpid, tmppos);
 549
 550         Paragraph * texrowpar;
 551
 552         if (tmpid == -1) {
 553                 texrowpar = text->ownerParagraph();
 554                 tmppos = 0;
 555         } else {
 556                 texrowpar = buffer()->getParFromID(tmpid);
 557         }
 558         text->setCursor(texrowpar, tmppos);
 559 }
 560
 561
 562 bool BufferView::insertInset(Inset * inset, string const & lout)
 563 {
 564         return pimpl_->insertInset(inset, lout);
 565 }
 566
 567
 568 void BufferView::gotoLabel(string const & label)
 569 {
 570         for (Buffer::inset_iterator it = buffer()->inset_iterator_begin();
 571              it != buffer()->inset_iterator_end(); ++it) {
 572                 vector<string> labels = it->getLabelList();
 573                 if (find(labels.begin(),labels.end(),label)
 574                      != labels.end()) {
 575                         beforeChange(text);
 576                         text->setCursor(it.getPar(), it.getPos());
 577                         text->selection.cursor = text->cursor;
 578                         update(text, BufferView::SELECT);
 579                         return;
 580                 }
 581         }
 582 }
 583
 584
 585 void BufferView::undo()
 586 {
 587         if (!available())
 588                 return;
 589
 590         owner()->message(_("Undo"));
 591         hideCursor();
 592         beforeChange(text);
 593         update(text, BufferView::SELECT);
 594         if (!textUndo(this))
 595                 owner()->message(_("No further undo information"));
 596         else
 597                 update(text, BufferView::SELECT);
 598         switchKeyMap();
 599 }
 600
 601
 602 void BufferView::redo()
 603 {
 604         if (!available())
 605                 return;
 606
 607         owner()->message(_("Redo"));
 608         hideCursor();
 609         beforeChange(text);
 610         update(text, BufferView::SELECT);
 611         if (!textRedo(this))
 612                 owner()->message(_("No further redo information"));
 613         else
 614                 update(text, BufferView::SELECT);
 615         switchKeyMap();
 616 }
 617
 618
 619 void BufferView::copyEnvironment()
 620 {
 621         if (available()) {
 622                 text->copyEnvironmentType();
 623                 owner()->message(_("Paragraph environment type copied"));
 624         }
 625 }
 626
 627
 628 void BufferView::pasteEnvironment()
 629 {
 630         if (available()) {
 631                 text->pasteEnvironmentType();
 632                 owner()->message(_("Paragraph environment type set"));
 633                 update(text, BufferView::SELECT);
 634         }
 635 }
 636
 637
 638 // these functions are for the spellchecker
 639 WordLangTuple const BufferView::nextWord(float & value)
 640 {
 641         if (!available()) {
 642                 value = 1;
 643                 return WordLangTuple();
 644         }
 645
 646         return text->selectNextWordToSpellcheck(value);
 647 }
 648
 649
 650 void BufferView::selectLastWord()
 651 {
 652         if (!available())
 653                 return;
 654
 655         LyXCursor cur = text->selection.cursor;
 656         hideCursor();
 657         beforeChange(text);
 658         text->selection.cursor = cur;
 659         text->selectSelectedWord();
 660         toggleSelection(false);
 661         update(text, BufferView::SELECT);
 662 }
 663
 664
 665 void BufferView::endOfSpellCheck()
 666 {
 667         if (!available()) return;
 668
 669         hideCursor();
 670         beforeChange(text);
 671         text->selectSelectedWord();
 672         text->clearSelection();
 673         update(text, BufferView::SELECT);
 674 }
 675
 676
 677 void BufferView::replaceWord(string const & replacestring)
 678 {
 679         if (!available())
 680                 return;
 681
 682         LyXText * tt = getLyXText();
 683         hideCursor();
 684         update(tt, BufferView::SELECT);
 685
 686         // clear the selection (if there is any)
 687         toggleSelection(false);
 688         update(tt, BufferView::SELECT);
 689
 690         // clear the selection (if there is any)
 691         toggleSelection(false);
 692         tt->replaceSelectionWithString(replacestring);
 693
 694         tt->setSelectionRange(replacestring.length());
 695
 696         // Go back so that replacement string is also spellchecked
 697         for (string::size_type i = 0; i < replacestring.length() + 1; ++i) {
 698                 tt->cursorLeft(this);
 699         }
 700         update(tt, BufferView::SELECT);
 701
 702         // FIXME: should be done through LFUN
 703         buffer()->markDirty();
 704         fitCursor();
 705 }
 706 // End of spellchecker stuff
 707
 708
 709 bool BufferView::lockInset(UpdatableInset * inset)
 710 {
 711         if (!inset)
 712                 return false;
 713         // don't relock if we're already locked
 714         if (theLockingInset() == inset)
 715                 return true;
 716         if (!theLockingInset()) {
 717                 // first check if it's the inset under the cursor we want lock
 718                 // should be most of the time
 719                 char const c = text->cursor.par()->getChar(text->cursor.pos());
 720                 if (c == Paragraph::META_INSET) {
 721                         Inset * in = text->cursor.par()->getInset(text->cursor.pos());
 722                         if (inset == in) {
 723                                 theLockingInset(inset);
 724                                 return true;
 725                         }
 726                 }
 727                 // Then do a deep look of the inset and lock the right one
 728                 int const id = inset->id();
 729                 ParagraphList::iterator pit = buffer()->paragraphs.begin();
 730                 ParagraphList::iterator pend = buffer()->paragraphs.end();
 731                 for (; pit != pend; ++pit) {
 732                         InsetList::iterator it = pit->insetlist.begin();
 733                         InsetList::iterator end = pit->insetlist.end();
 734                         for (; it != end; ++it) {
 735                                 if (it.getInset() == inset) {
 736                                         text->setCursorIntern(&*pit, it.getPos());
 737                                         theLockingInset(inset);
 738                                         return true;
 739                                 }
 740                                 if (it.getInset()->getInsetFromID(id)) {
 741                                         text->setCursorIntern(&*pit, it.getPos());
 742                                         it.getInset()->edit(this);
 743                                         return theLockingInset()->lockInsetInInset(this, inset);
 744                                 }
 745                         }
 746                 }
 747                 return false;
 748         }
 749         return theLockingInset()->lockInsetInInset(this, inset);
 750 }
 751
 752
 753 void BufferView::showLockedInsetCursor(int x, int y, int asc, int desc)
 754 {
 755         if (available() && theLockingInset() && !theLockingInset()->nodraw()) {
 756                 LyXCursor cursor = text->cursor;
 757                 Inset * locking_inset = theLockingInset()->getLockingInset();
 758
 759                 if ((cursor.pos() - 1 >= 0) &&
 760                     cursor.par()->isInset(cursor.pos() - 1) &&
 761                     (cursor.par()->getInset(cursor.pos() - 1) ==
 762                      locking_inset))
 763                         text->setCursor(cursor,
 764                                         cursor.par(), cursor.pos() - 1);
 765                 LyXScreen::Cursor_Shape shape = LyXScreen::BAR_SHAPE;
 766                 LyXText * txt = getLyXText();
 767                 if (locking_inset->isTextInset() &&
 768                     locking_inset->lyxCode() != Inset::ERT_CODE &&
 769                     (txt->real_current_font.language() !=
 770                      buffer()->params.language
 771                      || txt->real_current_font.isVisibleRightToLeft()
 772                      != buffer()->params.language->RightToLeft()))
 773                         shape = (txt->real_current_font.isVisibleRightToLeft())
 774                                 ? LyXScreen::REVERSED_L_SHAPE
 775                                 : LyXScreen::L_SHAPE;
 776                 y += cursor.iy() + theLockingInset()->insetInInsetY();
 777                 screen().showManualCursor(text, x, y, asc, desc,
 778                                                   shape);
 779         }
 780 }
 781
 782
 783 void BufferView::hideLockedInsetCursor()
 784 {
 785         if (theLockingInset() && available()) {
 786                 screen().hideCursor();
 787         }
 788 }
 789
 790
 791 bool BufferView::fitLockedInsetCursor(int x, int y, int asc, int desc)
 792 {
 793         if (theLockingInset() && available()) {
 794                 y += text->cursor.iy() + theLockingInset()->insetInInsetY();
 795                 if (screen().fitManualCursor(this, text, x, y, asc, desc)) {
 796                         updateScrollbar();
 797                         return true;
 798                 }
 799         }
 800         return false;
 801 }
 802
 803
 804 int BufferView::unlockInset(UpdatableInset * inset)
 805 {
 806         if (!inset)
 807                 return 0;
 808         if (inset && theLockingInset() == inset) {
 809                 inset->insetUnlock(this);
 810                 theLockingInset(0);
 811                 // make sure we update the combo !
 812                 owner()->setLayout(getLyXText()->cursor.par()->layout()->name());
 813                 // Tell the paragraph dialog that we changed paragraph
 814                 dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 815                 finishUndo();
 816                 return 0;
 817         } else if (inset && theLockingInset() &&
 818                    theLockingInset()->unlockInsetInInset(this, inset)) {
 819                 // Tell the paragraph dialog that we changed paragraph
 820                 dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 821                 // owner inset has updated the layout combo
 822                 finishUndo();
 823                 return 0;
 824         }
 825         return 1;
 826 }
 827
 828
 829 void BufferView::lockedInsetStoreUndo(Undo::undo_kind kind)
 830 {
 831         if (!theLockingInset())
 832                 return; // shouldn't happen
 833         if (kind == Undo::EDIT) // in this case insets would not be stored!
 834                 kind = Undo::FINISH;
 835         setUndo(this, kind,
 836                 text->cursor.par(),
 837                 text->cursor.par()->next());
 838 }
 839
 840
 841 void BufferView::updateInset(Inset * inset)
 842 {
 843         pimpl_->updateInset(inset);
 844 }
 845
 846
 847 bool BufferView::ChangeInsets(Inset::Code code,
 848                               string const & from, string const & to)
 849 {
 850         bool need_update = false;
 851         LyXCursor cursor = text->cursor;
 852         LyXCursor tmpcursor = cursor;
 853         cursor.par(tmpcursor.par());
 854         cursor.pos(tmpcursor.pos());
 855
 856         ParIterator end = buffer()->par_iterator_end();
 857         for (ParIterator it = buffer()->par_iterator_begin();
 858              it != end; ++it) {
 859                 Paragraph * par = *it;
 860                 bool changed_inset = false;
 861                 for (InsetList::iterator it2 = par->insetlist.begin();
 862                      it2 != par->insetlist.end(); ++it2) {
 863                         if (it2.getInset()->lyxCode() == code) {
 864                                 InsetCommand * inset = static_cast<InsetCommand *>(it2.getInset());
 865                                 if (inset->getContents() == from) {
 866                                         inset->setContents(to);
 867                                         changed_inset = true;
 868                                 }
 869                         }
 870                 }
 871                 if (changed_inset) {
 872                         need_update = true;
 873
 874                         // FIXME
 875
 876                         // The test it.size()==1 was needed to prevent crashes.
 877                         // How to set the cursor corretly when it.size()>1 ??
 878                         if (it.size() == 1) {
 879                                 text->setCursorIntern(par, 0);
 880                                 text->redoParagraphs(text->cursor,
 881                                                      text->cursor.par()->next());
 882                                 text->fullRebreak();
 883                         }
 884                 }
 885         }
 886         text->setCursorIntern(cursor.par(), cursor.pos());
 887         return need_update;
 888 }
 889
 890
 891 bool BufferView::ChangeRefsIfUnique(string const & from, string const & to)
 892 {
 893         // Check if the label 'from' appears more than once
 894         vector<string> labels = buffer()->getLabelList();
 895
 896         if (lyx::count(labels.begin(), labels.end(), from) > 1)
 897                 return false;
 898
 899         return ChangeInsets(Inset::REF_CODE, from, to);
 900 }
 901
 902
 903 bool BufferView::ChangeCitationsIfUnique(string const & from, string const & to)
 904 {
 905         typedef pair<string, string> StringPair;
 906
 907         vector<StringPair> keys;
 908         buffer()->fillWithBibKeys(keys);
 909         if (count_if(keys.begin(), keys.end(),
 910                      lyx::equal_1st_in_pair<StringPair>(from))
 911             > 1)
 912                 return false;
 913
 914         return ChangeInsets(Inset::CITE_CODE, from, to);
 915 }
 916
 917
 918 UpdatableInset * BufferView::theLockingInset() const
 919 {
 920         // If NULL is not allowed we should put an Assert here. (Lgb)
 921         if (text)
 922                 return text->the_locking_inset;
 923         return 0;
 924 }
 925
 926
 927 void BufferView::theLockingInset(UpdatableInset * inset)
 928 {
 929         text->the_locking_inset = inset;
 930 }
 931
 932
 933 LyXText * BufferView::getLyXText() const
 934 {
 935         if (theLockingInset()) {
 936                 LyXText * txt = theLockingInset()->getLyXText(this, true);
 937                 if (txt)
 938                         return txt;
 939         }
 940         return text;
 941 }
 942
 943
 944 LyXText * BufferView::getParentText(Inset * inset) const
 945 {
 946         if (inset->owner()) {
 947                 LyXText * txt = inset->getLyXText(this);
 948                 inset = inset->owner();
 949                 while (inset && inset->getLyXText(this) == txt)
 950                         inset = inset->owner();
 951                 if (inset)
 952                         return inset->getLyXText(this);
 953         }
 954         return text;
 955 }
 956
 957
 958 Language const * BufferView::getParentLanguage(Inset * inset) const
 959 {
 960         LyXText * text = getParentText(inset);
 961         return text->cursor.par()->getFontSettings(buffer()->params,
 962                                                    text->cursor.pos()).language();
 963 }
 964
 965
 966 Encoding const * BufferView::getEncoding() const
 967 {
 968         LyXText * t = getLyXText();
 969         if (!t)
 970                 return 0;
 971
 972         LyXCursor const & c= t->cursor;
 973         LyXFont const font = c.par()->getFont(buffer()->params, c.pos());
 974         return font.language()->encoding();
 975 }
 976
 977
 978 void BufferView::haveSelection(bool sel)
 979 {
 980         pimpl_->workarea().haveSelection(sel);
 981 }
 982
 983
 984 int BufferView::workHeight() const
 985 {
 986         return pimpl_->workarea().workHeight();
 987 }