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
  47 #include <fstream>
  48
  49 extern BufferList bufferlist;
  50
  51 using lyx::pos_type;
  52
  53 using std::pair;
  54 using std::endl;
  55 using std::ifstream;
  56 using std::vector;
  57 using std::find;
  58 using std::count_if;
  59
  60
  61 BufferView::BufferView(LyXView * owner, int xpos, int ypos,
  62                        int width, int height)
  63         : pimpl_(new Pimpl(this, owner, xpos, ypos, width, height))
  64 {
  65         text = 0;
  66 }
  67
  68
  69 BufferView::~BufferView()
  70 {
  71         delete text;
  72         delete pimpl_;
  73 }
  74
  75
  76 Buffer * BufferView::buffer() const
  77 {
  78         return pimpl_->buffer_;
  79 }
  80
  81
  82 LyXScreen & BufferView::screen() const
  83 {
  84         return pimpl_->screen();
  85 }
  86
  87
  88 LyXView * BufferView::owner() const
  89 {
  90         return pimpl_->owner_;
  91 }
  92
  93
  94 Painter & BufferView::painter() const
  95 {
  96         return pimpl_->painter();
  97 }
  98
  99
 100 void BufferView::buffer(Buffer * b)
 101 {
 102         pimpl_->buffer(b);
 103 }
 104
 105
 106 void BufferView::reload()
 107 {
 108         string const fn = buffer()->fileName();
 109         if (bufferlist.close(buffer()))
 110                 buffer(bufferlist.loadLyXFile(fn));
 111 }
 112
 113
 114 void BufferView::resize()
 115 {
 116         if (pimpl_->buffer_) {
 117                 pimpl_->resizeCurrentBuffer();
 118         }
 119 }
 120
 121
 122 void BufferView::repaint()
 123 {
 124         pimpl_->repaint();
 125 }
 126
 127
 128 bool BufferView::fitCursor()
 129 {
 130         return pimpl_->fitCursor();
 131 }
 132
 133
 134 void BufferView::update()
 135 {
 136         pimpl_->update();
 137 }
 138
 139
 140 void BufferView::updateScrollbar()
 141 {
 142         pimpl_->updateScrollbar();
 143 }
 144
 145
 146 void BufferView::scrollDocView(int value)
 147 {
 148         pimpl_->scrollDocView(value);
 149 }
 150
 151
 152 void BufferView::redoCurrentBuffer()
 153 {
 154         pimpl_->redoCurrentBuffer();
 155 }
 156
 157
 158 bool BufferView::available() const
 159 {
 160         return pimpl_->available();
 161 }
 162
 163
 164 Change const BufferView::getCurrentChange()
 165 {
 166         return pimpl_->getCurrentChange();
 167 }
 168
 169
 170 void BufferView::beforeChange(LyXText * text)
 171 {
 172         pimpl_->beforeChange(text);
 173 }
 174
 175
 176 void BufferView::savePosition(unsigned int i)
 177 {
 178         pimpl_->savePosition(i);
 179 }
 180
 181
 182 void BufferView::restorePosition(unsigned int i)
 183 {
 184         pimpl_->restorePosition(i);
 185 }
 186
 187
 188 bool BufferView::isSavedPosition(unsigned int i)
 189 {
 190         return pimpl_->isSavedPosition(i);
 191 }
 192
 193
 194 void BufferView::update(LyXText * text, UpdateCodes f)
 195 {
 196         pimpl_->update(text, f);
 197 }
 198
 199
 200 void BufferView::switchKeyMap()
 201 {
 202         pimpl_->switchKeyMap();
 203 }
 204
 205
 206 void BufferView::insetUnlock()
 207 {
 208         pimpl_->insetUnlock();
 209 }
 210
 211
 212 int BufferView::workWidth() const
 213 {
 214         return pimpl_->workarea().workWidth();
 215 }
 216
 217
 218 void BufferView::showCursor()
 219 {
 220         pimpl_->showCursor();
 221 }
 222
 223
 224 void BufferView::hideCursor()
 225 {
 226         pimpl_->hideCursor();
 227 }
 228
 229
 230 void BufferView::toggleSelection(bool b)
 231 {
 232         pimpl_->toggleSelection(b);
 233 }
 234
 235
 236 void BufferView::toggleToggle()
 237 {
 238         pimpl_->toggleToggle();
 239 }
 240
 241
 242 void BufferView::center()
 243 {
 244         pimpl_->center();
 245 }
 246
 247
 248 string const BufferView::getClipboard() const
 249 {
 250         return pimpl_->workarea().getClipboard();
 251 }
 252
 253
 254 void BufferView::stuffClipboard(string const & stuff) const
 255 {
 256         pimpl_->stuffClipboard(stuff);
 257 }
 258
 259
 260 BufferView::UpdateCodes operator|(BufferView::UpdateCodes uc1,
 261                                   BufferView::UpdateCodes uc2)
 262 {
 263         return static_cast<BufferView::UpdateCodes>
 264                 (static_cast<int>(uc1) | static_cast<int>(uc2));
 265 }
 266
 267
 268 bool BufferView::dispatch(FuncRequest const & ev)
 269 {
 270         return pimpl_->dispatch(ev);
 271 }
 272
 273
 274 void BufferView::scroll(int lines)
 275 {
 276         pimpl_->scroll(lines);
 277 }
 278
 279
 280 // Inserts a file into current document
 281 bool BufferView::insertLyXFile(string const & filen)
 282         //
 283         // Copyright CHT Software Service GmbH
 284         // Uwe C. Schroeder
 285         //
 286         // Insert a LyXformat - file into current buffer
 287         //
 288         // Moved from lyx_cb.C (Lgb)
 289 {
 290         if (filen.empty())
 291                 return false;
 292
 293         string const fname = MakeAbsPath(filen);
 294
 295         // check if file exist
 296         FileInfo const fi(fname);
 297
 298         if (!fi.readable()) {
 299                 Alert::alert(_("Error!"),
 300                            _("Specified file is unreadable: "),
 301                            MakeDisplayPath(fname, 50));
 302                 return false;
 303         }
 304
 305         beforeChange(text);
 306
 307         ifstream ifs(fname.c_str());
 308         if (!ifs) {
 309                 Alert::err_alert(_("Error! Cannot open specified file:"),
 310                            MakeDisplayPath(fname, 50));
 311                 return false;
 312         }
 313
 314         int const c = ifs.peek();
 315
 316         LyXLex lex(0, 0);
 317         lex.setStream(ifs);
 318
 319         bool res = true;
 320
 321         if (c == '#') {
 322                 // FIXME: huh ? No we won't !
 323                 lyxerr[Debug::INFO] << "Will insert file with header" << endl;
 324                 res = buffer()->readFile(lex, fname, ParagraphList::iterator(text->cursor.par()));
 325         } else {
 326                 lyxerr[Debug::INFO] << "Will insert file without header"
 327                                     << endl;
 328                 res = buffer()->readBody(lex, ParagraphList::iterator(text->cursor.par()));
 329         }
 330
 331         resize();
 332         return res;
 333 }
 334
 335
 336 bool BufferView::removeAutoInsets()
 337 {
 338         // keep track of which pos and par the cursor was on
 339         Paragraph * cursor_par = text->cursor.par();
 340         Paragraph * cursor_par_prev = cursor_par ? cursor_par->previous() : 0;
 341         Paragraph * cursor_par_next = cursor_par ? cursor_par->next() : 0;
 342         pos_type cursor_pos = text->cursor.pos();
 343
 344         bool found = false;
 345
 346         // Trap the deletion of the paragraph the cursor is in.
 347         // Iterate until we find a paragraph that won't be immediately deleted.
 348         // In reality this should mean we only execute the body of the while
 349         // loop once at most.  However for safety we iterate rather than just
 350         // make this an if () conditional.
 351         while ((cursor_par_prev || cursor_par_next)
 352                && text->setCursor(this,
 353                                   cursor_par_prev ? cursor_par_prev : cursor_par_next,
 354                                   0)) {
 355                 // We just removed cursor_par so have to fix the "cursor"
 356                 if (cursor_par_prev) {
 357                         // '.' = cursor_par
 358                         //  a -> a.
 359                         // .
 360                         cursor_par = cursor_par_prev;
 361                         cursor_pos = cursor_par->size();
 362                 } else {
 363                         // .  -> .a
 364                         //  a
 365                         cursor_par = cursor_par_next;
 366                         cursor_pos = 0;
 367                 }
 368                 cursor_par_prev = cursor_par->previous();
 369                 cursor_par_next = cursor_par->next();
 370         }
 371
 372         // Iterate through the paragraphs removing autoDelete insets as we go.
 373         // If the paragraph ends up empty after all the autoDelete insets are
 374         // removed that paragraph will be removed by the next setCursor() call.
 375         ParIterator it = buffer()->par_iterator_begin();
 376         ParIterator end = buffer()->par_iterator_end();
 377         for (; it != end; ++it) {
 378                 Paragraph * par = *it;
 379                 Paragraph * par_prev = par ? par->previous() : 0;
 380                 bool removed = false;
 381
 382                 if (text->setCursor(this, par, 0)
 383                     && cursor_par == par_prev) {
 384                         // The previous setCursor line was deleted and that
 385                         // was the cursor_par line.  This can only happen if an
 386                         // error box was the sole item on cursor_par.
 387                         // It is possible for cursor_par_prev to be stray if
 388                         // the line it pointed to only had a error box on it
 389                         // so we have to set it to a known correct value.
 390                         // This is often the same value it already had.
 391                         cursor_par_prev = par->previous();
 392                         if (cursor_par_prev) {
 393                                 // '|' = par, '.' = cursor_par, 'E' = error box
 394                                 // First step below may occur before while{}
 395                                 //  a    |a      a     a     a.
 396                                 //  E -> .E -> |.E -> .  -> |b
 397                                 // .      b      b    |b
 398                                 //  b
 399                                 cursor_par = cursor_par_prev;
 400                                 cursor_pos = cursor_par_prev->size();
 401                                 cursor_par_prev = cursor_par->previous();
 402                                 // cursor_par_next remains the same
 403                         } else if (cursor_par_next) {
 404                                 // First step below may occur before while{}
 405                                 // .
 406                                 //  E -> |.E -> |.  -> . -> .|a
 407                                 //  a      a      a    |a
 408                                 cursor_par = cursor_par_next;
 409                                 cursor_pos = 0;
 410                                 // cursor_par_prev remains unset
 411                                 cursor_par_next = cursor_par->next();
 412                         } else {
 413                                 // I can't find a way to trigger this
 414                                 // so it should be unreachable code
 415                                 // unless the buffer is corrupted.
 416                                 lyxerr << "BufferView::removeAutoInsets() is bad\n";
 417                         }
 418                 }
 419
 420                 InsetList::iterator pit = par->insetlist.begin();
 421                 InsetList::iterator pend = par->insetlist.end();
 422
 423                 while (pit != pend) {
 424                         if (pit.getInset()->autoDelete()) {
 425                                 removed = true;
 426                                 pos_type const pos = pit.getPos();
 427
 428                                 par->erase(pos);
 429                                 // We just invalidated par's inset iterators so
 430                                 // we get the next valid iterator position
 431                                 pit = par->insetlist.insetIterator(pos);
 432                                 // and ensure we have a valid end iterator.
 433                                 pend = par->insetlist.end();
 434
 435                                 if (cursor_par == par) {
 436                                         // update the saved cursor position
 437                                         if (cursor_pos > pos)
 438                                                 --cursor_pos;
 439                                 }
 440                         } else {
 441                                 ++pit;
 442                         }
 443                 }
 444                 if (removed) {
 445                         found = true;
 446                         text->redoParagraph(this);
 447                 }
 448         }
 449
 450         // It is possible that the last line is empty if it was cursor_par
 451         // and/or only had an error inset on it.  So we set the cursor to the
 452         // start of the doc to force its removal and ensure a valid saved cursor
 453         if (text->setCursor(this, text->ownerParagraph(), 0)
 454             && 0 == cursor_par_next) {
 455                 cursor_par = cursor_par_prev;
 456                 cursor_pos = cursor_par->size();
 457         } else if (cursor_pos > cursor_par->size()) {
 458                 // Some C-Enter lines were removed by the setCursor call which
 459                 // then invalidated cursor_pos. It could still be "wrong" because
 460                 // the cursor may appear to have jumped but since we collapsed
 461                 // some C-Enter lines this should be a reasonable compromise.
 462                 cursor_pos = cursor_par->size();
 463         }
 464
 465         // restore the original cursor in its corrected location.
 466         text->setCursorIntern(this, cursor_par, cursor_pos);
 467
 468         return found;
 469 }
 470
 471
 472 void BufferView::insertErrors(TeXErrors & terr)
 473 {
 474         // Save the cursor position
 475         LyXCursor cursor = text->cursor;
 476
 477         TeXErrors::Errors::const_iterator cit = terr.begin();
 478         TeXErrors::Errors::const_iterator end = terr.end();
 479         for (; cit != end; ++cit) {
 480                 string const desctext(cit->error_desc);
 481                 string const errortext(cit->error_text);
 482                 string const msgtxt = desctext + '\n' + errortext;
 483                 int const errorrow = cit->error_in_line;
 484
 485                 // Insert error string for row number
 486                 int tmpid = -1;
 487                 int tmppos = -1;
 488
 489                 if (buffer()->texrow.getIdFromRow(errorrow, tmpid, tmppos)) {
 490                         buffer()->texrow.increasePos(tmpid, tmppos);
 491                 }
 492
 493                 Paragraph * texrowpar = 0;
 494
 495                 if (tmpid == -1) {
 496                         texrowpar = text->ownerParagraph();
 497                         tmppos = 0;
 498                 } else {
 499                         texrowpar = buffer()->getParFromID(tmpid);
 500                 }
 501
 502                 if (texrowpar == 0)
 503                         continue;
 504
 505                 freezeUndo();
 506                 InsetError * new_inset = new InsetError(msgtxt);
 507                 text->setCursorIntern(this, texrowpar, tmppos);
 508                 text->insertInset(this, new_inset);
 509                 text->fullRebreak(this);
 510                 unFreezeUndo();
 511         }
 512         // Restore the cursor position
 513         text->setCursorIntern(this, cursor.par(), cursor.pos());
 514 }
 515
 516
 517 void BufferView::setCursorFromRow(int row)
 518 {
 519         int tmpid = -1;
 520         int tmppos = -1;
 521
 522         buffer()->texrow.getIdFromRow(row, tmpid, tmppos);
 523
 524         Paragraph * texrowpar;
 525
 526         if (tmpid == -1) {
 527                 texrowpar = text->ownerParagraph();
 528                 tmppos = 0;
 529         } else {
 530                 texrowpar = buffer()->getParFromID(tmpid);
 531         }
 532         text->setCursor(this, texrowpar, tmppos);
 533 }
 534
 535
 536 bool BufferView::insertInset(Inset * inset, string const & lout)
 537 {
 538         return pimpl_->insertInset(inset, lout);
 539 }
 540
 541
 542 // This is also a buffer property (ale)
 543 // Not so sure about that. a goto Label function can not be buffer local, just
 544 // think how this will work in a multiwindow/buffer environment, all the
 545 // cursors in all the views showing this buffer will move. (Lgb)
 546 // OK, then no cursor action should be allowed in buffer. (ale)
 547 bool BufferView::gotoLabel(string const & label)
 548 {
 549         for (Buffer::inset_iterator it = buffer()->inset_iterator_begin();
 550              it != buffer()->inset_iterator_end(); ++it) {
 551                 vector<string> labels = it->getLabelList();
 552                 if (find(labels.begin(),labels.end(),label)
 553                      != labels.end()) {
 554                         beforeChange(text);
 555                         text->setCursor(this, it.getPar(), it.getPos());
 556                         text->selection.cursor = text->cursor;
 557                         update(text, BufferView::SELECT|BufferView::FITCUR);
 558                         return true;
 559                 }
 560         }
 561         return false;
 562 }
 563
 564
 565 void BufferView::undo()
 566 {
 567         if (!available())
 568                 return;
 569
 570         owner()->message(_("Undo"));
 571         hideCursor();
 572         beforeChange(text);
 573         update(text, BufferView::SELECT|BufferView::FITCUR);
 574         if (!textUndo(this))
 575                 owner()->message(_("No further undo information"));
 576         else
 577                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 578         switchKeyMap();
 579 }
 580
 581
 582 void BufferView::redo()
 583 {
 584         if (!available())
 585                 return;
 586
 587         owner()->message(_("Redo"));
 588         hideCursor();
 589         beforeChange(text);
 590         update(text, BufferView::SELECT|BufferView::FITCUR);
 591         if (!textRedo(this))
 592                 owner()->message(_("No further redo information"));
 593         else
 594                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 595         switchKeyMap();
 596 }
 597
 598
 599 void BufferView::copyEnvironment()
 600 {
 601         if (available()) {
 602                 text->copyEnvironmentType();
 603                 owner()->message(_("Paragraph environment type copied"));
 604         }
 605 }
 606
 607
 608 void BufferView::pasteEnvironment()
 609 {
 610         if (available()) {
 611                 text->pasteEnvironmentType(this);
 612                 owner()->message(_("Paragraph environment type set"));
 613                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 614         }
 615 }
 616
 617
 618 // these functions are for the spellchecker
 619 WordLangTuple const BufferView::nextWord(float & value)
 620 {
 621         if (!available()) {
 622                 value = 1;
 623                 return WordLangTuple();
 624         }
 625
 626         return text->selectNextWordToSpellcheck(this, value);
 627 }
 628
 629
 630 void BufferView::selectLastWord()
 631 {
 632         if (!available())
 633                 return;
 634
 635         LyXCursor cur = text->selection.cursor;
 636         hideCursor();
 637         beforeChange(text);
 638         text->selection.cursor = cur;
 639         text->selectSelectedWord(this);
 640         toggleSelection(false);
 641         update(text, BufferView::SELECT|BufferView::FITCUR);
 642 }
 643
 644
 645 void BufferView::endOfSpellCheck()
 646 {
 647         if (!available()) return;
 648
 649         hideCursor();
 650         beforeChange(text);
 651         text->selectSelectedWord(this);
 652         text->clearSelection();
 653         update(text, BufferView::SELECT|BufferView::FITCUR);
 654 }
 655
 656
 657 void BufferView::replaceWord(string const & replacestring)
 658 {
 659         if (!available())
 660                 return;
 661
 662         LyXText * tt = getLyXText();
 663         hideCursor();
 664         update(tt, BufferView::SELECT|BufferView::FITCUR);
 665
 666         // clear the selection (if there is any)
 667         toggleSelection(false);
 668         update(tt, BufferView::SELECT|BufferView::FITCUR);
 669
 670         // clear the selection (if there is any)
 671         toggleSelection(false);
 672         tt->replaceSelectionWithString(this, replacestring);
 673
 674         tt->setSelectionRange(this, replacestring.length());
 675
 676         // Go back so that replacement string is also spellchecked
 677         for (string::size_type i = 0; i < replacestring.length() + 1; ++i) {
 678                 tt->cursorLeft(this);
 679         }
 680         update(tt, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 681 }
 682 // End of spellchecker stuff
 683
 684
 685 bool BufferView::lockInset(UpdatableInset * inset)
 686 {
 687         if (!inset)
 688                 return false;
 689         // don't relock if we're already locked
 690         if (theLockingInset() == inset)
 691                 return true;
 692         if (!theLockingInset()) {
 693                 // first check if it's the inset under the cursor we want lock
 694                 // should be most of the time
 695                 char const c = text->cursor.par()->getChar(text->cursor.pos());
 696                 if (c == Paragraph::META_INSET) {
 697                         Inset * in = text->cursor.par()->getInset(text->cursor.pos());
 698                         if (inset == in) {
 699                                 theLockingInset(inset);
 700                                 return true;
 701                         }
 702                 }
 703                 // Then do a deep look of the inset and lock the right one
 704                 int const id = inset->id();
 705                 ParagraphList::iterator pit = buffer()->paragraphs.begin();
 706                 ParagraphList::iterator pend = buffer()->paragraphs.end();
 707                 for (; pit != pend; ++pit) {
 708                         InsetList::iterator it = pit->insetlist.begin();
 709                         InsetList::iterator end = pit->insetlist.end();
 710                         for (; it != end; ++it) {
 711                                 if (it.getInset() == inset) {
 712                                         text->setCursorIntern(this, &*pit, it.getPos());
 713                                         theLockingInset(inset);
 714                                         return true;
 715                                 }
 716                                 if (it.getInset()->getInsetFromID(id)) {
 717                                         text->setCursorIntern(this, &*pit, it.getPos());
 718                                         it.getInset()->edit(this);
 719                                         return theLockingInset()->lockInsetInInset(this, inset);
 720                                 }
 721                         }
 722                 }
 723                 return false;
 724         }
 725         return theLockingInset()->lockInsetInInset(this, inset);
 726 }
 727
 728
 729 void BufferView::showLockedInsetCursor(int x, int y, int asc, int desc)
 730 {
 731         if (available() && theLockingInset() && !theLockingInset()->nodraw()) {
 732                 LyXCursor cursor = text->cursor;
 733                 Inset * locking_inset = theLockingInset()->getLockingInset();
 734
 735                 if ((cursor.pos() - 1 >= 0) &&
 736                     cursor.par()->isInset(cursor.pos() - 1) &&
 737                     (cursor.par()->getInset(cursor.pos() - 1) ==
 738                      locking_inset))
 739                         text->setCursor(this, cursor,
 740                                         cursor.par(), cursor.pos() - 1);
 741                 LyXScreen::Cursor_Shape shape = LyXScreen::BAR_SHAPE;
 742                 LyXText * txt = getLyXText();
 743                 if (locking_inset->isTextInset() &&
 744                     locking_inset->lyxCode() != Inset::ERT_CODE &&
 745                     (txt->real_current_font.language() !=
 746                      buffer()->params.language
 747                      || txt->real_current_font.isVisibleRightToLeft()
 748                      != buffer()->params.language->RightToLeft()))
 749                         shape = (txt->real_current_font.isVisibleRightToLeft())
 750                                 ? LyXScreen::REVERSED_L_SHAPE
 751                                 : LyXScreen::L_SHAPE;
 752                 y += cursor.iy() + theLockingInset()->insetInInsetY();
 753                 screen().showManualCursor(text, x, y, asc, desc,
 754                                                   shape);
 755         }
 756 }
 757
 758
 759 void BufferView::hideLockedInsetCursor()
 760 {
 761         if (theLockingInset() && available()) {
 762                 screen().hideCursor();
 763         }
 764 }
 765
 766
 767 bool BufferView::fitLockedInsetCursor(int x, int y, int asc, int desc)
 768 {
 769         if (theLockingInset() && available()) {
 770                 y += text->cursor.iy() + theLockingInset()->insetInInsetY();
 771                 if (screen().fitManualCursor(this, text, x, y, asc, desc)) {
 772                         updateScrollbar();
 773                         return true;
 774                 }
 775         }
 776         return false;
 777 }
 778
 779
 780 int BufferView::unlockInset(UpdatableInset * inset)
 781 {
 782         if (!inset)
 783                 return 0;
 784         if (inset && theLockingInset() == inset) {
 785                 inset->insetUnlock(this);
 786                 theLockingInset(0);
 787                 // make sure we update the combo !
 788                 owner()->setLayout(getLyXText()->cursor.par()->layout()->name());
 789                 // Tell the paragraph dialog that we changed paragraph
 790                 dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 791                 finishUndo();
 792                 return 0;
 793         } else if (inset && theLockingInset() &&
 794                    theLockingInset()->unlockInsetInInset(this, inset)) {
 795                 // Tell the paragraph dialog that we changed paragraph
 796                 dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 797                 // owner inset has updated the layout combo
 798                 finishUndo();
 799                 return 0;
 800         }
 801         return 1;
 802 }
 803
 804
 805 void BufferView::lockedInsetStoreUndo(Undo::undo_kind kind)
 806 {
 807         if (!theLockingInset())
 808                 return; // shouldn't happen
 809         if (kind == Undo::EDIT) // in this case insets would not be stored!
 810                 kind = Undo::FINISH;
 811         setUndo(this, kind,
 812                 text->cursor.par(),
 813                 text->cursor.par()->next());
 814 }
 815
 816
 817 void BufferView::updateInset(Inset * inset, bool mark_dirty)
 818 {
 819         pimpl_->updateInset(inset, mark_dirty);
 820 }
 821
 822
 823 bool BufferView::ChangeInsets(Inset::Code code,
 824                               string const & from, string const & to)
 825 {
 826         bool need_update = false;
 827         LyXCursor cursor = text->cursor;
 828         LyXCursor tmpcursor = cursor;
 829         cursor.par(tmpcursor.par());
 830         cursor.pos(tmpcursor.pos());
 831
 832         ParIterator end = buffer()->par_iterator_end();
 833         for (ParIterator it = buffer()->par_iterator_begin();
 834              it != end; ++it) {
 835                 Paragraph * par = *it;
 836                 bool changed_inset = false;
 837                 for (InsetList::iterator it2 = par->insetlist.begin();
 838                      it2 != par->insetlist.end(); ++it2) {
 839                         if (it2.getInset()->lyxCode() == code) {
 840                                 InsetCommand * inset = static_cast<InsetCommand *>(it2.getInset());
 841                                 if (inset->getContents() == from) {
 842                                         inset->setContents(to);
 843                                         changed_inset = true;
 844                                 }
 845                         }
 846                 }
 847                 if (changed_inset) {
 848                         need_update = true;
 849
 850                         // FIXME
 851
 852                         // The test it.size()==1 was needed to prevent crashes.
 853                         // How to set the cursor corretly when it.size()>1 ??
 854                         if (it.size() == 1) {
 855                                 text->setCursorIntern(this, par, 0);
 856                                 text->redoParagraphs(this, text->cursor,
 857                                                      text->cursor.par()->next());
 858                                 text->fullRebreak(this);
 859                         }
 860                 }
 861         }
 862         text->setCursorIntern(this, cursor.par(), cursor.pos());
 863         return need_update;
 864 }
 865
 866
 867 bool BufferView::ChangeRefsIfUnique(string const & from, string const & to)
 868 {
 869         // Check if the label 'from' appears more than once
 870         vector<string> labels = buffer()->getLabelList();
 871
 872         if (lyx::count(labels.begin(), labels.end(), from) > 1)
 873                 return false;
 874
 875         return ChangeInsets(Inset::REF_CODE, from, to);
 876 }
 877
 878
 879 bool BufferView::ChangeCitationsIfUnique(string const & from, string const & to)
 880 {
 881         typedef pair<string, string> StringPair;
 882
 883         vector<StringPair> keys;
 884         buffer()->fillWithBibKeys(keys);
 885         if (count_if(keys.begin(), keys.end(),
 886                      lyx::equal_1st_in_pair<StringPair>(from))
 887             > 1)
 888                 return false;
 889
 890         return ChangeInsets(Inset::CITE_CODE, from, to);
 891 }
 892
 893
 894 UpdatableInset * BufferView::theLockingInset() const
 895 {
 896         // If NULL is not allowed we should put an Assert here. (Lgb)
 897         if (text)
 898                 return text->the_locking_inset;
 899         return 0;
 900 }
 901
 902
 903 void BufferView::theLockingInset(UpdatableInset * inset)
 904 {
 905         text->the_locking_inset = inset;
 906 }
 907
 908
 909 LyXText * BufferView::getLyXText() const
 910 {
 911         if (theLockingInset()) {
 912                 LyXText * txt = theLockingInset()->getLyXText(this, true);
 913                 if (txt)
 914                         return txt;
 915         }
 916         return text;
 917 }
 918
 919
 920 LyXText * BufferView::getParentText(Inset * inset) const
 921 {
 922         if (inset->owner()) {
 923                 LyXText * txt = inset->getLyXText(this);
 924                 inset = inset->owner();
 925                 while (inset && inset->getLyXText(this) == txt)
 926                         inset = inset->owner();
 927                 if (inset)
 928                         return inset->getLyXText(this);
 929         }
 930         return text;
 931 }
 932
 933
 934 Language const * BufferView::getParentLanguage(Inset * inset) const
 935 {
 936         LyXText * text = getParentText(inset);
 937         return text->cursor.par()->getFontSettings(buffer()->params,
 938                                                    text->cursor.pos()).language();
 939 }
 940
 941
 942 Encoding const * BufferView::getEncoding() const
 943 {
 944         LyXText * t = getLyXText();
 945         if (!t)
 946                 return 0;
 947
 948         LyXCursor const & c= t->cursor;
 949         LyXFont const font = c.par()->getFont(buffer()->params, c.pos());
 950         return font.language()->encoding();
 951 }
 952
 953
 954 void BufferView::haveSelection(bool sel)
 955 {
 956         pimpl_->workarea().haveSelection(sel);
 957 }
 958
 959
 960 int BufferView::workHeight() const
 961 {
 962         return pimpl_->workarea().workHeight();
 963 }