src/BufferView.C

   1 /**
   2  * \file BufferView.C
   3  * Copyright 1995-2002 the LyX Team
   4  * Read the file COPYING
   5  *
   6  * \author unknown
   7  * \author John Levon <moz@compsoc.man.ac.uk>
   8  */
   9
  10 #include <config.h>
  11
  12 #include "BufferView.h"
  13 #include "BufferView_pimpl.h"
  14
  15 #include "BufferView_pimpl.h"
  16 #include "LaTeX.h"
  17 #include "ParagraphParameters.h"
  18 #include "WordLangTuple.h"
  19 #include "buffer.h"
  20 #include "bufferlist.h"
  21 #include "debug.h"
  22 #include "gettext.h"
  23 #include "iterators.h"
  24 #include "language.h"
  25 #include "lyxcursor.h"
  26 #include "lyxlex.h"
  27 #include "lyxtext.h"
  28 #include "undo_funcs.h"
  29 #include "changes.h"
  30 #include "paragraph_funcs.h"
  31
  32 #include "frontends/Alert.h"
  33 #include "frontends/Dialogs.h"
  34 #include "frontends/LyXView.h"
  35 #include "frontends/WorkArea.h"
  36 #include "frontends/screen.h"
  37
  38 #include "insets/insetcommand.h" // ChangeRefs
  39 #include "insets/inseterror.h"
  40 #include "insets/updatableinset.h"
  41
  42 #include "support/FileInfo.h"
  43 #include "support/filetools.h"
  44 #include "support/lyxfunctional.h" // equal_1st_in_pair
  45 #include "support/types.h"
  46 #include "support/lyxalgo.h" // lyx_count
  47 #include "support/BoostFormat.h"
  48
  49 #include <fstream>
  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$s\ncould not be read."));
 310                 fmt % file;
 311                 string text = fmt.str();
 312 #else
 313                 string text = _("The specified document\n");
 314                 text += file + _(" could not be read.");
 315 #endif
 316                 Alert::error(_("Could not read document"), text);
 317                 return false;
 318         }
 319
 320         beforeChange(text);
 321
 322         ifstream ifs(fname.c_str());
 323         if (!ifs) {
 324                 string const file = MakeDisplayPath(fname, 50);
 325 #if USE_BOOST_FORMAT
 326                 boost::format fmt(_("Could not open the specified document\n%1$s."));
 327                 fmt % file;
 328                 string text = fmt.str();
 329 #else
 330                 string text = _("Could not open the specified document\n");
 331                 text += file + ".";
 332 #endif
 333                 Alert::error(_("Could not open file"), text);
 334                 return false;
 335         }
 336
 337         int const c = ifs.peek();
 338
 339         LyXLex lex(0, 0);
 340         lex.setStream(ifs);
 341
 342         bool res = true;
 343
 344         if (c == '#') {
 345                 // FIXME: huh ? No we won't !
 346                 lyxerr[Debug::INFO] << "Will insert file with header" << endl;
 347                 res = buffer()->readFile(lex, fname, ParagraphList::iterator(text->cursor.par()));
 348         } else {
 349                 lyxerr[Debug::INFO] << "Will insert file without header"
 350                                     << endl;
 351                 res = buffer()->readBody(lex, ParagraphList::iterator(text->cursor.par()));
 352         }
 353
 354         resize();
 355         return res;
 356 }
 357
 358
 359 bool BufferView::removeAutoInsets()
 360 {
 361         // keep track of which pos and par the cursor was on
 362         Paragraph * cursor_par = &*text->cursor.par();
 363         Paragraph * cursor_par_prev = cursor_par ? cursor_par->previous() : 0;
 364         Paragraph * cursor_par_next = cursor_par ? cursor_par->next() : 0;
 365         pos_type cursor_pos = text->cursor.pos();
 366
 367         bool found = false;
 368
 369         // Trap the deletion of the paragraph the cursor is in.
 370         // Iterate until we find a paragraph that won't be immediately deleted.
 371         // In reality this should mean we only execute the body of the while
 372         // loop once at most.  However for safety we iterate rather than just
 373         // make this an if () conditional.
 374         while ((cursor_par_prev || cursor_par_next)
 375                && text->setCursor(
 376                                   cursor_par_prev ? cursor_par_prev : cursor_par_next,
 377                                   0)) {
 378                 // We just removed cursor_par so have to fix the "cursor"
 379                 if (cursor_par_prev) {
 380                         // '.' = cursor_par
 381                         //  a -> a.
 382                         // .
 383                         cursor_par = cursor_par_prev;
 384                         cursor_pos = cursor_par->size();
 385                 } else {
 386                         // .  -> .a
 387                         //  a
 388                         cursor_par = cursor_par_next;
 389                         cursor_pos = 0;
 390                 }
 391                 cursor_par_prev = cursor_par->previous();
 392                 cursor_par_next = cursor_par->next();
 393         }
 394
 395         // Iterate through the paragraphs removing autoDelete insets as we go.
 396         // If the paragraph ends up empty after all the autoDelete insets are
 397         // removed that paragraph will be removed by the next setCursor() call.
 398         ParIterator it = buffer()->par_iterator_begin();
 399         ParIterator end = buffer()->par_iterator_end();
 400         for (; it != end; ++it) {
 401                 Paragraph * par = *it;
 402                 Paragraph * par_prev = par ? par->previous() : 0;
 403                 bool removed = false;
 404
 405                 if (text->setCursor(par, 0)
 406                     && cursor_par == par_prev) {
 407                         // The previous setCursor line was deleted and that
 408                         // was the cursor_par line.  This can only happen if an
 409                         // error box was the sole item on cursor_par.
 410                         // It is possible for cursor_par_prev to be stray if
 411                         // the line it pointed to only had a error box on it
 412                         // so we have to set it to a known correct value.
 413                         // This is often the same value it already had.
 414                         cursor_par_prev = par->previous();
 415                         if (cursor_par_prev) {
 416                                 // '|' = par, '.' = cursor_par, 'E' = error box
 417                                 // First step below may occur before while{}
 418                                 //  a    |a      a     a     a.
 419                                 //  E -> .E -> |.E -> .  -> |b
 420                                 // .      b      b    |b
 421                                 //  b
 422                                 cursor_par = cursor_par_prev;
 423                                 cursor_pos = cursor_par_prev->size();
 424                                 cursor_par_prev = cursor_par->previous();
 425                                 // cursor_par_next remains the same
 426                         } else if (cursor_par_next) {
 427                                 // First step below may occur before while{}
 428                                 // .
 429                                 //  E -> |.E -> |.  -> . -> .|a
 430                                 //  a      a      a    |a
 431                                 cursor_par = cursor_par_next;
 432                                 cursor_pos = 0;
 433                                 // cursor_par_prev remains unset
 434                                 cursor_par_next = cursor_par->next();
 435                         } else {
 436                                 // I can't find a way to trigger this
 437                                 // so it should be unreachable code
 438                                 // unless the buffer is corrupted.
 439                                 lyxerr << "BufferView::removeAutoInsets() is bad\n";
 440                         }
 441                 }
 442
 443                 InsetList::iterator pit = par->insetlist.begin();
 444                 InsetList::iterator pend = par->insetlist.end();
 445
 446                 while (pit != pend) {
 447                         if (pit.getInset()->autoDelete()) {
 448                                 removed = true;
 449                                 pos_type const pos = pit.getPos();
 450
 451                                 par->erase(pos);
 452                                 // We just invalidated par's inset iterators so
 453                                 // we get the next valid iterator position
 454                                 pit = par->insetlist.insetIterator(pos);
 455                                 // and ensure we have a valid end iterator.
 456                                 pend = par->insetlist.end();
 457
 458                                 if (cursor_par == par) {
 459                                         // update the saved cursor position
 460                                         if (cursor_pos > pos)
 461                                                 --cursor_pos;
 462                                 }
 463                         } else {
 464                                 ++pit;
 465                         }
 466                 }
 467                 if (removed) {
 468                         found = true;
 469                         text->redoParagraph();
 470                 }
 471         }
 472
 473         // It is possible that the last line is empty if it was cursor_par
 474         // and/or only had an error inset on it.  So we set the cursor to the
 475         // start of the doc to force its removal and ensure a valid saved cursor
 476         if (text->setCursor(&*text->ownerParagraphs().begin(), 0)
 477             && 0 == cursor_par_next) {
 478                 cursor_par = cursor_par_prev;
 479                 cursor_pos = cursor_par->size();
 480         } else if (cursor_pos > cursor_par->size()) {
 481                 // Some C-Enter lines were removed by the setCursor call which
 482                 // then invalidated cursor_pos. It could still be "wrong" because
 483                 // the cursor may appear to have jumped but since we collapsed
 484                 // some C-Enter lines this should be a reasonable compromise.
 485                 cursor_pos = cursor_par->size();
 486         }
 487
 488         // restore the original cursor in its corrected location.
 489         text->setCursorIntern(cursor_par, cursor_pos);
 490
 491         return found;
 492 }
 493
 494
 495 void BufferView::insertErrors(TeXErrors & terr)
 496 {
 497         // Save the cursor position
 498         LyXCursor cursor = text->cursor;
 499
 500         TeXErrors::Errors::const_iterator cit = terr.begin();
 501         TeXErrors::Errors::const_iterator end = terr.end();
 502         for (; cit != end; ++cit) {
 503                 string const desctext(cit->error_desc);
 504                 string const errortext(cit->error_text);
 505                 string const msgtxt = desctext + '\n' + errortext;
 506                 int const errorrow = cit->error_in_line;
 507
 508                 // Insert error string for row number
 509                 int tmpid = -1;
 510                 int tmppos = -1;
 511
 512                 if (buffer()->texrow.getIdFromRow(errorrow, tmpid, tmppos)) {
 513                         buffer()->texrow.increasePos(tmpid, tmppos);
 514                 }
 515
 516                 Paragraph * texrowpar = 0;
 517
 518                 if (tmpid == -1) {
 519                         texrowpar = &*text->ownerParagraphs().begin();
 520                         tmppos = 0;
 521                 } else {
 522                         texrowpar = buffer()->getParFromID(tmpid);
 523                 }
 524
 525                 if (texrowpar == 0)
 526                         continue;
 527
 528                 freezeUndo();
 529                 InsetError * new_inset = new InsetError(msgtxt);
 530                 text->setCursorIntern(texrowpar, tmppos);
 531                 text->insertInset(new_inset);
 532                 text->fullRebreak();
 533                 unFreezeUndo();
 534         }
 535         // Restore the cursor position
 536         text->setCursorIntern(cursor.par(), cursor.pos());
 537 }
 538
 539
 540 void BufferView::setCursorFromRow(int row)
 541 {
 542         int tmpid = -1;
 543         int tmppos = -1;
 544
 545         buffer()->texrow.getIdFromRow(row, tmpid, tmppos);
 546
 547         Paragraph * texrowpar;
 548
 549         if (tmpid == -1) {
 550                 texrowpar = &*text->ownerParagraphs().begin();
 551                 tmppos = 0;
 552         } else {
 553                 texrowpar = buffer()->getParFromID(tmpid);
 554         }
 555         text->setCursor(texrowpar, tmppos);
 556 }
 557
 558
 559 bool BufferView::insertInset(Inset * inset, string const & lout)
 560 {
 561         return pimpl_->insertInset(inset, lout);
 562 }
 563
 564
 565 void BufferView::gotoLabel(string const & label)
 566 {
 567         for (Buffer::inset_iterator it = buffer()->inset_iterator_begin();
 568              it != buffer()->inset_iterator_end(); ++it) {
 569                 vector<string> labels = it->getLabelList();
 570                 if (find(labels.begin(),labels.end(),label)
 571                      != labels.end()) {
 572                         beforeChange(text);
 573                         text->setCursor(it.getPar(), it.getPos());
 574                         text->selection.cursor = text->cursor;
 575                         update(text, BufferView::SELECT);
 576                         return;
 577                 }
 578         }
 579 }
 580
 581
 582 void BufferView::undo()
 583 {
 584         if (!available())
 585                 return;
 586
 587         owner()->message(_("Undo"));
 588         hideCursor();
 589         beforeChange(text);
 590         update(text, BufferView::SELECT);
 591         if (!textUndo(this))
 592                 owner()->message(_("No further undo information"));
 593         else
 594                 update(text, BufferView::SELECT);
 595         switchKeyMap();
 596 }
 597
 598
 599 void BufferView::redo()
 600 {
 601         if (!available())
 602                 return;
 603
 604         owner()->message(_("Redo"));
 605         hideCursor();
 606         beforeChange(text);
 607         update(text, BufferView::SELECT);
 608         if (!textRedo(this))
 609                 owner()->message(_("No further redo information"));
 610         else
 611                 update(text, BufferView::SELECT);
 612         switchKeyMap();
 613 }
 614
 615
 616 void BufferView::copyEnvironment()
 617 {
 618         if (available()) {
 619                 text->copyEnvironmentType();
 620                 owner()->message(_("Paragraph environment type copied"));
 621         }
 622 }
 623
 624
 625 void BufferView::pasteEnvironment()
 626 {
 627         if (available()) {
 628                 text->pasteEnvironmentType();
 629                 owner()->message(_("Paragraph environment type set"));
 630                 update(text, BufferView::SELECT);
 631         }
 632 }
 633
 634
 635 // these functions are for the spellchecker
 636 WordLangTuple const BufferView::nextWord(float & value)
 637 {
 638         if (!available()) {
 639                 value = 1;
 640                 return WordLangTuple();
 641         }
 642
 643         return text->selectNextWordToSpellcheck(value);
 644 }
 645
 646
 647 void BufferView::selectLastWord()
 648 {
 649         if (!available())
 650                 return;
 651
 652         LyXCursor cur = text->selection.cursor;
 653         hideCursor();
 654         beforeChange(text);
 655         text->selection.cursor = cur;
 656         text->selectSelectedWord();
 657         toggleSelection(false);
 658         update(text, BufferView::SELECT);
 659 }
 660
 661
 662 void BufferView::endOfSpellCheck()
 663 {
 664         if (!available()) return;
 665
 666         hideCursor();
 667         beforeChange(text);
 668         text->selectSelectedWord();
 669         text->clearSelection();
 670         update(text, BufferView::SELECT);
 671 }
 672
 673
 674 void BufferView::replaceWord(string const & replacestring)
 675 {
 676         if (!available())
 677                 return;
 678
 679         LyXText * tt = getLyXText();
 680         hideCursor();
 681         update(tt, BufferView::SELECT);
 682
 683         // clear the selection (if there is any)
 684         toggleSelection(false);
 685         update(tt, BufferView::SELECT);
 686
 687         // clear the selection (if there is any)
 688         toggleSelection(false);
 689         tt->replaceSelectionWithString(replacestring);
 690
 691         tt->setSelectionRange(replacestring.length());
 692
 693         // Go back so that replacement string is also spellchecked
 694         for (string::size_type i = 0; i < replacestring.length() + 1; ++i) {
 695                 tt->cursorLeft(this);
 696         }
 697         update(tt, BufferView::SELECT);
 698
 699         // FIXME: should be done through LFUN
 700         buffer()->markDirty();
 701         fitCursor();
 702 }
 703 // End of spellchecker stuff
 704
 705
 706 bool BufferView::lockInset(UpdatableInset * inset)
 707 {
 708         if (!inset)
 709                 return false;
 710         // don't relock if we're already locked
 711         if (theLockingInset() == inset)
 712                 return true;
 713         if (!theLockingInset()) {
 714                 // first check if it's the inset under the cursor we want lock
 715                 // should be most of the time
 716                 if (text->cursor.pos() < text->cursor.par()->size()
 717                     && text->cursor.par()->getChar(text->cursor.pos()) ==
 718                     Paragraph::META_INSET) {
 719                         Inset * in = text->cursor.par()->getInset(text->cursor.pos());
 720                         if (inset == in) {
 721                                 theLockingInset(inset);
 722                                 return true;
 723                         }
 724                 }
 725                 // Then do a deep look of the inset and lock the right one
 726                 int const id = inset->id();
 727                 ParagraphList::iterator pit = buffer()->paragraphs.begin();
 728                 ParagraphList::iterator pend = buffer()->paragraphs.end();
 729                 for (; pit != pend; ++pit) {
 730                         InsetList::iterator it = pit->insetlist.begin();
 731                         InsetList::iterator end = pit->insetlist.end();
 732                         for (; it != end; ++it) {
 733                                 if (it.getInset() == inset) {
 734                                         text->setCursorIntern(&*pit, it.getPos());
 735                                         theLockingInset(inset);
 736                                         return true;
 737                                 }
 738                                 if (it.getInset()->getInsetFromID(id)) {
 739                                         text->setCursorIntern(&*pit, it.getPos());
 740                                         it.getInset()->edit(this);
 741                                         return theLockingInset()->lockInsetInInset(this, inset);
 742                                 }
 743                         }
 744                 }
 745                 return false;
 746         }
 747         return theLockingInset()->lockInsetInInset(this, inset);
 748 }
 749
 750
 751 void BufferView::showLockedInsetCursor(int x, int y, int asc, int desc)
 752 {
 753         if (available() && theLockingInset() && !theLockingInset()->nodraw()) {
 754                 LyXCursor cursor = text->cursor;
 755                 Inset * locking_inset = theLockingInset()->getLockingInset();
 756
 757                 if ((cursor.pos() - 1 >= 0) &&
 758                     cursor.par()->isInset(cursor.pos() - 1) &&
 759                     (cursor.par()->getInset(cursor.pos() - 1) ==
 760                      locking_inset))
 761                         text->setCursor(cursor,
 762                                         cursor.par(), cursor.pos() - 1);
 763                 LyXScreen::Cursor_Shape shape = LyXScreen::BAR_SHAPE;
 764                 LyXText * txt = getLyXText();
 765                 if (locking_inset->isTextInset() &&
 766                     locking_inset->lyxCode() != Inset::ERT_CODE &&
 767                     (txt->real_current_font.language() !=
 768                      buffer()->params.language
 769                      || txt->real_current_font.isVisibleRightToLeft()
 770                      != buffer()->params.language->RightToLeft()))
 771                         shape = (txt->real_current_font.isVisibleRightToLeft())
 772                                 ? LyXScreen::REVERSED_L_SHAPE
 773                                 : LyXScreen::L_SHAPE;
 774                 y += cursor.iy() + theLockingInset()->insetInInsetY();
 775                 screen().showManualCursor(text, x, y, asc, desc,
 776                                                   shape);
 777         }
 778 }
 779
 780
 781 void BufferView::hideLockedInsetCursor()
 782 {
 783         if (theLockingInset() && available()) {
 784                 screen().hideCursor();
 785         }
 786 }
 787
 788
 789 bool BufferView::fitLockedInsetCursor(int x, int y, int asc, int desc)
 790 {
 791         if (theLockingInset() && available()) {
 792                 y += text->cursor.iy() + theLockingInset()->insetInInsetY();
 793                 if (screen().fitManualCursor(this, text, x, y, asc, desc)) {
 794                         updateScrollbar();
 795                         return true;
 796                 }
 797         }
 798         return false;
 799 }
 800
 801
 802 int BufferView::unlockInset(UpdatableInset * inset)
 803 {
 804         if (!inset)
 805                 return 0;
 806         if (inset && theLockingInset() == inset) {
 807                 inset->insetUnlock(this);
 808                 theLockingInset(0);
 809                 // make sure we update the combo !
 810                 owner()->setLayout(getLyXText()->cursor.par()->layout()->name());
 811                 // Tell the paragraph dialog that we changed paragraph
 812                 dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 813                 finishUndo();
 814                 return 0;
 815         } else if (inset && theLockingInset() &&
 816                    theLockingInset()->unlockInsetInInset(this, inset)) {
 817                 // Tell the paragraph dialog that we changed paragraph
 818                 dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 819                 // owner inset has updated the layout combo
 820                 finishUndo();
 821                 return 0;
 822         }
 823         return 1;
 824 }
 825
 826
 827 void BufferView::lockedInsetStoreUndo(Undo::undo_kind kind)
 828 {
 829         if (!theLockingInset())
 830                 return; // shouldn't happen
 831         if (kind == Undo::EDIT) // in this case insets would not be stored!
 832                 kind = Undo::FINISH;
 833         setUndo(this, kind,
 834                 &*text->cursor.par(),
 835                 text->cursor.par()->next());
 836 }
 837
 838
 839 void BufferView::updateInset(Inset * inset)
 840 {
 841         pimpl_->updateInset(inset);
 842 }
 843
 844
 845 bool BufferView::ChangeInsets(Inset::Code code,
 846                               string const & from, string const & to)
 847 {
 848         bool need_update = false;
 849         LyXCursor cursor = text->cursor;
 850         LyXCursor tmpcursor = cursor;
 851         cursor.par(tmpcursor.par());
 852         cursor.pos(tmpcursor.pos());
 853
 854         ParIterator end = buffer()->par_iterator_end();
 855         for (ParIterator it = buffer()->par_iterator_begin();
 856              it != end; ++it) {
 857                 Paragraph * par = *it;
 858                 bool changed_inset = false;
 859                 for (InsetList::iterator it2 = par->insetlist.begin();
 860                      it2 != par->insetlist.end(); ++it2) {
 861                         if (it2.getInset()->lyxCode() == code) {
 862                                 InsetCommand * inset = static_cast<InsetCommand *>(it2.getInset());
 863                                 if (inset->getContents() == from) {
 864                                         inset->setContents(to);
 865                                         changed_inset = true;
 866                                 }
 867                         }
 868                 }
 869                 if (changed_inset) {
 870                         need_update = true;
 871
 872                         // FIXME
 873
 874                         // The test it.size()==1 was needed to prevent crashes.
 875                         // How to set the cursor corretly when it.size()>1 ??
 876                         if (it.size() == 1) {
 877                                 text->setCursorIntern(par, 0);
 878                                 text->redoParagraphs(text->cursor,
 879                                                      text->cursor.par()->next());
 880                                 text->fullRebreak();
 881                         }
 882                 }
 883         }
 884         text->setCursorIntern(cursor.par(), cursor.pos());
 885         return need_update;
 886 }
 887
 888
 889 bool BufferView::ChangeRefsIfUnique(string const & from, string const & to)
 890 {
 891         // Check if the label 'from' appears more than once
 892         vector<string> labels = buffer()->getLabelList();
 893
 894         if (lyx::count(labels.begin(), labels.end(), from) > 1)
 895                 return false;
 896
 897         return ChangeInsets(Inset::REF_CODE, from, to);
 898 }
 899
 900
 901 bool BufferView::ChangeCitationsIfUnique(string const & from, string const & to)
 902 {
 903         typedef pair<string, string> StringPair;
 904
 905         vector<StringPair> keys;
 906         buffer()->fillWithBibKeys(keys);
 907         if (count_if(keys.begin(), keys.end(),
 908                      lyx::equal_1st_in_pair<StringPair>(from))
 909             > 1)
 910                 return false;
 911
 912         return ChangeInsets(Inset::CITE_CODE, from, to);
 913 }
 914
 915
 916 UpdatableInset * BufferView::theLockingInset() const
 917 {
 918         // If NULL is not allowed we should put an Assert here. (Lgb)
 919         if (text)
 920                 return text->the_locking_inset;
 921         return 0;
 922 }
 923
 924
 925 void BufferView::theLockingInset(UpdatableInset * inset)
 926 {
 927         text->the_locking_inset = inset;
 928 }
 929
 930
 931 LyXText * BufferView::getLyXText() const
 932 {
 933         if (theLockingInset()) {
 934                 LyXText * txt = theLockingInset()->getLyXText(this, true);
 935                 if (txt)
 936                         return txt;
 937         }
 938         return text;
 939 }
 940
 941
 942 LyXText * BufferView::getParentText(Inset * inset) const
 943 {
 944         if (inset->owner()) {
 945                 LyXText * txt = inset->getLyXText(this);
 946                 inset = inset->owner();
 947                 while (inset && inset->getLyXText(this) == txt)
 948                         inset = inset->owner();
 949                 if (inset)
 950                         return inset->getLyXText(this);
 951         }
 952         return text;
 953 }
 954
 955
 956 Language const * BufferView::getParentLanguage(Inset * inset) const
 957 {
 958         LyXText * text = getParentText(inset);
 959         return text->cursor.par()->getFontSettings(buffer()->params,
 960                                                    text->cursor.pos()).language();
 961 }
 962
 963
 964 Encoding const * BufferView::getEncoding() const
 965 {
 966         LyXText * t = getLyXText();
 967         if (!t)
 968                 return 0;
 969
 970         LyXCursor const & c = t->cursor;
 971         LyXFont const font = c.par()->getFont(buffer()->params, c.pos(),
 972                                               outerFont(c.par()));
 973         return font.language()->encoding();
 974 }
 975
 976
 977 void BufferView::haveSelection(bool sel)
 978 {
 979         pimpl_->workarea().haveSelection(sel);
 980 }
 981
 982
 983 int BufferView::workHeight() const
 984 {
 985         return pimpl_->workarea().workHeight();
 986 }