src/BufferView.C

   1 /**
   2  * \file BufferView.C
   3  * Copyright 1995-2002 the LyX Team
   4  * Read the file COPYING
   5  *
   6  * \author unknown
   7  * \author John Levon <moz@compsoc.man.ac.uk>
   8  */
   9
  10 #include <config.h>
  11
  12 #ifdef __GNUG__
  13 #pragma implementation
  14 #endif
  15
  16 #include "BufferView.h"
  17 #include "BufferView_pimpl.h"
  18
  19 #include "BufferView_pimpl.h"
  20 #include "LaTeX.h"
  21 #include "WordLangTuple.h"
  22 #include "buffer.h"
  23 #include "bufferlist.h"
  24 #include "debug.h"
  25 #include "gettext.h"
  26 #include "iterators.h"
  27 #include "language.h"
  28 #include "lyxcursor.h"
  29 #include "lyxlex.h"
  30 #include "lyxtext.h"
  31 #include "undo_funcs.h"
  32
  33 #include "frontends/Alert.h"
  34 #include "frontends/Dialogs.h"
  35 #include "frontends/LyXView.h"
  36 #include "frontends/WorkArea.h"
  37 #include "frontends/screen.h"
  38
  39 #include "insets/insetcommand.h" // ChangeRefs
  40 #include "insets/inseterror.h"
  41
  42 #include "support/FileInfo.h"
  43 #include "support/filetools.h"
  44 #include "support/lyxfunctional.h" // equal_1st_in_pair
  45 #include "support/types.h"
  46 #include "support/lyxalgo.h" // lyx_count
  47
  48 #include <fstream>
  49
  50 extern BufferList bufferlist;
  51
  52 using lyx::pos_type;
  53
  54 using std::pair;
  55 using std::endl;
  56 using std::ifstream;
  57 using std::vector;
  58 using std::find;
  59 using std::count_if;
  60
  61
  62 BufferView::BufferView(LyXView * owner, int xpos, int ypos,
  63                        int width, int height)
  64         : pimpl_(new Pimpl(this, owner, xpos, ypos, width, height))
  65 {
  66         text = 0;
  67 }
  68
  69
  70 BufferView::~BufferView()
  71 {
  72         delete text;
  73         delete pimpl_;
  74 }
  75
  76
  77 Buffer * BufferView::buffer() const
  78 {
  79         return pimpl_->buffer_;
  80 }
  81
  82
  83 LyXScreen & BufferView::screen() const
  84 {
  85         return pimpl_->screen();
  86 }
  87
  88
  89 LyXView * BufferView::owner() const
  90 {
  91         return pimpl_->owner_;
  92 }
  93
  94
  95 Painter & BufferView::painter() const
  96 {
  97         return pimpl_->painter();
  98 }
  99
 100
 101 void BufferView::buffer(Buffer * b)
 102 {
 103         pimpl_->buffer(b);
 104 }
 105
 106
 107 void BufferView::resize()
 108 {
 109         if (pimpl_->buffer_) {
 110                 pimpl_->resizeCurrentBuffer();
 111         }
 112 }
 113
 114
 115 void BufferView::repaint()
 116 {
 117         pimpl_->repaint();
 118 }
 119
 120
 121 bool BufferView::fitCursor()
 122 {
 123         return pimpl_->fitCursor();
 124 }
 125
 126
 127 void BufferView::update()
 128 {
 129         pimpl_->update();
 130 }
 131
 132
 133 void BufferView::updateScrollbar()
 134 {
 135         pimpl_->updateScrollbar();
 136 }
 137
 138
 139 void BufferView::scrollDocView(int value)
 140 {
 141         pimpl_->scrollDocView(value);
 142 }
 143
 144
 145 void BufferView::redoCurrentBuffer()
 146 {
 147         pimpl_->redoCurrentBuffer();
 148 }
 149
 150
 151 bool BufferView::available() const
 152 {
 153         return pimpl_->available();
 154 }
 155
 156
 157 void BufferView::beforeChange(LyXText * text)
 158 {
 159         pimpl_->beforeChange(text);
 160 }
 161
 162
 163 void BufferView::savePosition(unsigned int i)
 164 {
 165         pimpl_->savePosition(i);
 166 }
 167
 168
 169 void BufferView::restorePosition(unsigned int i)
 170 {
 171         pimpl_->restorePosition(i);
 172 }
 173
 174
 175 bool BufferView::isSavedPosition(unsigned int i)
 176 {
 177         return pimpl_->isSavedPosition(i);
 178 }
 179
 180
 181 void BufferView::update(LyXText * text, UpdateCodes f)
 182 {
 183         pimpl_->update(text, f);
 184 }
 185
 186
 187 void BufferView::switchKeyMap()
 188 {
 189         pimpl_->switchKeyMap();
 190 }
 191
 192
 193 void BufferView::insetUnlock()
 194 {
 195         pimpl_->insetUnlock();
 196 }
 197
 198
 199 int BufferView::workWidth() const
 200 {
 201         return pimpl_->workarea().workWidth();
 202 }
 203
 204
 205 void BufferView::showCursor()
 206 {
 207         pimpl_->showCursor();
 208 }
 209
 210
 211 void BufferView::hideCursor()
 212 {
 213         pimpl_->hideCursor();
 214 }
 215
 216
 217 void BufferView::toggleSelection(bool b)
 218 {
 219         pimpl_->toggleSelection(b);
 220 }
 221
 222
 223 void BufferView::toggleToggle()
 224 {
 225         pimpl_->toggleToggle();
 226 }
 227
 228
 229 void BufferView::center()
 230 {
 231         pimpl_->center();
 232 }
 233
 234
 235 string const BufferView::getClipboard() const
 236 {
 237         return pimpl_->workarea().getClipboard();
 238 }
 239
 240
 241 void BufferView::stuffClipboard(string const & stuff) const
 242 {
 243         pimpl_->stuffClipboard(stuff);
 244 }
 245
 246
 247 BufferView::UpdateCodes operator|(BufferView::UpdateCodes uc1,
 248                                   BufferView::UpdateCodes uc2)
 249 {
 250         return static_cast<BufferView::UpdateCodes>
 251                 (static_cast<int>(uc1) | static_cast<int>(uc2));
 252 }
 253
 254
 255 bool BufferView::dispatch(FuncRequest const & ev)
 256 {
 257         return pimpl_->dispatch(ev);
 258 }
 259
 260
 261 void BufferView::scroll(int lines)
 262 {
 263         pimpl_->scroll(lines);
 264 }
 265
 266
 267 int BufferView::defaultHeight() const
 268 {
 269         return text->defaultHeight();
 270 }
 271
 272
 273
 274 // Inserts a file into current document
 275 bool BufferView::insertLyXFile(string const & filen)
 276         //
 277         // Copyright CHT Software Service GmbH
 278         // Uwe C. Schroeder
 279         //
 280         // Insert a LyXformat - file into current buffer
 281         //
 282         // Moved from lyx_cb.C (Lgb)
 283 {
 284         if (filen.empty())
 285                 return false;
 286
 287         string const fname = MakeAbsPath(filen);
 288
 289         // check if file exist
 290         FileInfo const fi(fname);
 291
 292         if (!fi.readable()) {
 293                 Alert::alert(_("Error!"),
 294                            _("Specified file is unreadable: "),
 295                            MakeDisplayPath(fname, 50));
 296                 return false;
 297         }
 298
 299         beforeChange(text);
 300
 301         ifstream ifs(fname.c_str());
 302         if (!ifs) {
 303                 Alert::err_alert(_("Error! Cannot open specified file:"),
 304                            MakeDisplayPath(fname, 50));
 305                 return false;
 306         }
 307
 308         int const c = ifs.peek();
 309
 310         LyXLex lex(0, 0);
 311         lex.setStream(ifs);
 312
 313         bool res = true;
 314
 315         if (c == '#') {
 316                 lyxerr[Debug::INFO] << "Will insert file with header" << endl;
 317                 res = buffer()->readFile(lex, fname, text->cursor.par());
 318         } else {
 319                 lyxerr[Debug::INFO] << "Will insert file without header"
 320                                     << endl;
 321                 res = buffer()->readLyXformat2(lex, text->cursor.par());
 322         }
 323
 324         resize();
 325         return res;
 326 }
 327
 328
 329 bool BufferView::removeAutoInsets()
 330 {
 331         // keep track of which pos and par the cursor was on
 332         Paragraph * cursor_par = text->cursor.par();
 333         Paragraph * cursor_par_prev = cursor_par ? cursor_par->previous() : 0;
 334         Paragraph * cursor_par_next = cursor_par ? cursor_par->next() : 0;
 335         pos_type cursor_pos = text->cursor.pos();
 336
 337         bool found = false;
 338
 339         // Trap the deletion of the paragraph the cursor is in.
 340         // Iterate until we find a paragraph that won't be immediately deleted.
 341         // In reality this should mean we only execute the body of the while
 342         // loop once at most.  However for safety we iterate rather than just
 343         // make this an if () conditional.
 344         while ((cursor_par_prev || cursor_par_next)
 345                && text->setCursor(this,
 346                                   cursor_par_prev ? cursor_par_prev : cursor_par_next,
 347                                   0)) {
 348                 // We just removed cursor_par so have to fix the "cursor"
 349                 if (cursor_par_prev) {
 350                         // '.' = cursor_par
 351                         //  a -> a.
 352                         // .
 353                         cursor_par = cursor_par_prev;
 354                         cursor_pos = cursor_par->size();
 355                 } else {
 356                         // .  -> .a
 357                         //  a
 358                         cursor_par = cursor_par_next;
 359                         cursor_pos = 0;
 360                 }
 361                 cursor_par_prev = cursor_par->previous();
 362                 cursor_par_next = cursor_par->next();
 363         }
 364
 365         // Iterate through the paragraphs removing autoDelete insets as we go.
 366         // If the paragraph ends up empty after all the autoDelete insets are
 367         // removed that paragraph will be removed by the next setCursor() call.
 368         ParIterator it = buffer()->par_iterator_begin();
 369         ParIterator end = buffer()->par_iterator_end();
 370         for (; it != end; ++it) {
 371                 Paragraph * par = *it;
 372                 Paragraph * par_prev = par ? par->previous() : 0;
 373                 bool removed = false;
 374
 375                 if (text->setCursor(this, par, 0)
 376                     && cursor_par == par_prev) {
 377                         // The previous setCursor line was deleted and that
 378                         // was the cursor_par line.  This can only happen if an
 379                         // error box was the sole item on cursor_par.
 380                         // It is possible for cursor_par_prev to be stray if
 381                         // the line it pointed to only had a error box on it
 382                         // so we have to set it to a known correct value.
 383                         // This is often the same value it already had.
 384                         cursor_par_prev = par->previous();
 385                         if (cursor_par_prev) {
 386                                 // '|' = par, '.' = cursor_par, 'E' = error box
 387                                 // First step below may occur before while{}
 388                                 //  a    |a      a     a     a.
 389                                 //  E -> .E -> |.E -> .  -> |b
 390                                 // .      b      b    |b
 391                                 //  b
 392                                 cursor_par = cursor_par_prev;
 393                                 cursor_pos = cursor_par_prev->size();
 394                                 cursor_par_prev = cursor_par->previous();
 395                                 // cursor_par_next remains the same
 396                         } else if (cursor_par_next) {
 397                                 // First step below may occur before while{}
 398                                 // .
 399                                 //  E -> |.E -> |.  -> . -> .|a
 400                                 //  a      a      a    |a
 401                                 cursor_par = cursor_par_next;
 402                                 cursor_pos = 0;
 403                                 // cursor_par_prev remains unset
 404                                 cursor_par_next = cursor_par->next();
 405                         } else {
 406                                 // I can't find a way to trigger this
 407                                 // so it should be unreachable code
 408                                 // unless the buffer is corrupted.
 409                                 lyxerr << "BufferView::removeAutoInsets() is bad\n";
 410                         }
 411                 }
 412
 413                 InsetList::iterator pit = par->insetlist.begin();
 414                 InsetList::iterator pend = par->insetlist.end();
 415
 416                 while (pit != pend) {
 417                         if (pit.getInset()->autoDelete()) {
 418                                 removed = true;
 419                                 pos_type const pos = pit.getPos();
 420
 421                                 par->erase(pos);
 422                                 // We just invalidated par's inset iterators so
 423                                 // we get the next valid iterator position
 424                                 pit = par->insetlist.insetIterator(pos);
 425                                 // and ensure we have a valid end iterator.
 426                                 pend = par->insetlist.end();
 427
 428                                 if (cursor_par == par) {
 429                                         // update the saved cursor position
 430                                         if (cursor_pos > pos)
 431                                                 --cursor_pos;
 432                                 }
 433                         } else {
 434                                 ++pit;
 435                         }
 436                 }
 437                 if (removed) {
 438                         found = true;
 439                         text->redoParagraph(this);
 440                 }
 441         }
 442
 443         // It is possible that the last line is empty if it was cursor_par
 444         // and/or only had an error inset on it.  So we set the cursor to the
 445         // start of the doc to force its removal and ensure a valid saved cursor
 446         if (text->setCursor(this, text->ownerParagraph(), 0)
 447             && 0 == cursor_par_next) {
 448                 cursor_par = cursor_par_prev;
 449                 cursor_pos = cursor_par->size();
 450         } else if (cursor_pos > cursor_par->size()) {
 451                 // Some C-Enter lines were removed by the setCursor call which
 452                 // then invalidated cursor_pos. It could still be "wrong" because
 453                 // the cursor may appear to have jumped but since we collapsed
 454                 // some C-Enter lines this should be a reasonable compromise.
 455                 cursor_pos = cursor_par->size();
 456         }
 457
 458         // restore the original cursor in its corrected location.
 459         text->setCursorIntern(this, cursor_par, cursor_pos);
 460
 461         return found;
 462 }
 463
 464
 465 void BufferView::insertErrors(TeXErrors & terr)
 466 {
 467         // Save the cursor position
 468         LyXCursor cursor = text->cursor;
 469
 470         TeXErrors::Errors::const_iterator cit = terr.begin();
 471         TeXErrors::Errors::const_iterator end = terr.end();
 472         for (; cit != end; ++cit) {
 473                 string const desctext(cit->error_desc);
 474                 string const errortext(cit->error_text);
 475                 string const msgtxt = desctext + '\n' + errortext;
 476                 int const errorrow = cit->error_in_line;
 477
 478                 // Insert error string for row number
 479                 int tmpid = -1;
 480                 int tmppos = -1;
 481
 482                 if (buffer()->texrow.getIdFromRow(errorrow, tmpid, tmppos)) {
 483                         buffer()->texrow.increasePos(tmpid, tmppos);
 484                 }
 485
 486                 Paragraph * texrowpar = 0;
 487
 488                 if (tmpid == -1) {
 489                         texrowpar = text->ownerParagraph();
 490                         tmppos = 0;
 491                 } else {
 492                         texrowpar = buffer()->getParFromID(tmpid);
 493                 }
 494
 495                 if (texrowpar == 0)
 496                         continue;
 497
 498                 freezeUndo();
 499                 InsetError * new_inset = new InsetError(msgtxt);
 500                 text->setCursorIntern(this, texrowpar, tmppos);
 501                 text->insertInset(this, new_inset);
 502                 text->fullRebreak(this);
 503                 unFreezeUndo();
 504         }
 505         // Restore the cursor position
 506         text->setCursorIntern(this, cursor.par(), cursor.pos());
 507 }
 508
 509
 510 void BufferView::setCursorFromRow(int row)
 511 {
 512         int tmpid = -1;
 513         int tmppos = -1;
 514
 515         buffer()->texrow.getIdFromRow(row, tmpid, tmppos);
 516
 517         Paragraph * texrowpar;
 518
 519         if (tmpid == -1) {
 520                 texrowpar = text->ownerParagraph();
 521                 tmppos = 0;
 522         } else {
 523                 texrowpar = buffer()->getParFromID(tmpid);
 524         }
 525         text->setCursor(this, texrowpar, tmppos);
 526 }
 527
 528
 529 bool BufferView::insertInset(Inset * inset, string const & lout)
 530 {
 531         return pimpl_->insertInset(inset, lout);
 532 }
 533
 534
 535 // This is also a buffer property (ale)
 536 // Not so sure about that. a goto Label function can not be buffer local, just
 537 // think how this will work in a multiwindow/buffer environment, all the
 538 // cursors in all the views showing this buffer will move. (Lgb)
 539 // OK, then no cursor action should be allowed in buffer. (ale)
 540 bool BufferView::gotoLabel(string const & label)
 541 {
 542         for (Buffer::inset_iterator it = buffer()->inset_iterator_begin();
 543              it != buffer()->inset_iterator_end(); ++it) {
 544                 vector<string> labels = it->getLabelList();
 545                 if (find(labels.begin(),labels.end(),label)
 546                      != labels.end()) {
 547                         beforeChange(text);
 548                         text->setCursor(this, it.getPar(), it.getPos());
 549                         text->selection.cursor = text->cursor;
 550                         update(text, BufferView::SELECT|BufferView::FITCUR);
 551                         return true;
 552                 }
 553         }
 554         return false;
 555 }
 556
 557
 558 void BufferView::undo()
 559 {
 560         if (!available())
 561                 return;
 562
 563         owner()->message(_("Undo"));
 564         hideCursor();
 565         beforeChange(text);
 566         update(text, BufferView::SELECT|BufferView::FITCUR);
 567         if (!textUndo(this))
 568                 owner()->message(_("No further undo information"));
 569         else
 570                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 571         switchKeyMap();
 572 }
 573
 574
 575 void BufferView::redo()
 576 {
 577         if (!available())
 578                 return;
 579
 580         owner()->message(_("Redo"));
 581         hideCursor();
 582         beforeChange(text);
 583         update(text, BufferView::SELECT|BufferView::FITCUR);
 584         if (!textRedo(this))
 585                 owner()->message(_("No further redo information"));
 586         else
 587                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 588         switchKeyMap();
 589 }
 590
 591
 592 void BufferView::copyEnvironment()
 593 {
 594         if (available()) {
 595                 text->copyEnvironmentType();
 596                 owner()->message(_("Paragraph environment type copied"));
 597         }
 598 }
 599
 600
 601 void BufferView::pasteEnvironment()
 602 {
 603         if (available()) {
 604                 text->pasteEnvironmentType(this);
 605                 owner()->message(_("Paragraph environment type set"));
 606                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 607         }
 608 }
 609
 610
 611 // these functions are for the spellchecker
 612 WordLangTuple const BufferView::nextWord(float & value)
 613 {
 614         if (!available()) {
 615                 value = 1;
 616                 return WordLangTuple();
 617         }
 618
 619         return text->selectNextWordToSpellcheck(this, value);
 620 }
 621
 622
 623 void BufferView::selectLastWord()
 624 {
 625         if (!available())
 626                 return;
 627
 628         LyXCursor cur = text->selection.cursor;
 629         hideCursor();
 630         beforeChange(text);
 631         text->selection.cursor = cur;
 632         text->selectSelectedWord(this);
 633         toggleSelection(false);
 634         update(text, BufferView::SELECT|BufferView::FITCUR);
 635 }
 636
 637
 638 void BufferView::endOfSpellCheck()
 639 {
 640         if (!available()) return;
 641
 642         hideCursor();
 643         beforeChange(text);
 644         text->selectSelectedWord(this);
 645         text->clearSelection();
 646         update(text, BufferView::SELECT|BufferView::FITCUR);
 647 }
 648
 649
 650 void BufferView::replaceWord(string const & replacestring)
 651 {
 652         if (!available())
 653                 return;
 654
 655         LyXText * tt = getLyXText();
 656         hideCursor();
 657         update(tt, BufferView::SELECT|BufferView::FITCUR);
 658
 659         // clear the selection (if there is any)
 660         toggleSelection(false);
 661         update(tt, BufferView::SELECT|BufferView::FITCUR);
 662
 663         // clear the selection (if there is any)
 664         toggleSelection(false);
 665         tt->replaceSelectionWithString(this, replacestring);
 666
 667         tt->setSelectionOverString(this, replacestring);
 668
 669         // Go back so that replacement string is also spellchecked
 670         for (string::size_type i = 0; i < replacestring.length() + 1; ++i) {
 671                 tt->cursorLeft(this);
 672         }
 673         update(tt, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 674 }
 675 // End of spellchecker stuff
 676
 677
 678 bool BufferView::lockInset(UpdatableInset * inset)
 679 {
 680         if (!inset)
 681                 return false;
 682         // don't relock if we're already locked
 683         if (theLockingInset() == inset)
 684                 return true;
 685         if (!theLockingInset()) {
 686                 // first check if it's the inset under the cursor we want lock
 687                 // should be most of the time
 688                 char const c = text->cursor.par()->getChar(text->cursor.pos());
 689                 if (c == Paragraph::META_INSET) {
 690                         Inset * in = text->cursor.par()->getInset(text->cursor.pos());
 691                         if (inset == in) {
 692                                 theLockingInset(inset);
 693                                 return true;
 694                         }
 695                 }
 696                 // Then do a deep look of the inset and lock the right one
 697                 int const id = inset->id();
 698                 ParagraphList::iterator pit = buffer()->paragraphs.begin();
 699                 ParagraphList::iterator pend = buffer()->paragraphs.end();
 700                 for (; pit != pend; ++pit) {
 701                         InsetList::iterator it = pit->insetlist.begin();
 702                         InsetList::iterator end = pit->insetlist.end();
 703                         for (; it != end; ++it) {
 704                                 if (it.getInset() == inset) {
 705                                         text->setCursorIntern(this, &*pit, it.getPos());
 706                                         theLockingInset(inset);
 707                                         return true;
 708                                 }
 709                                 if (it.getInset()->getInsetFromID(id)) {
 710                                         text->setCursorIntern(this, &*pit, it.getPos());
 711                                         it.getInset()->edit(this);
 712                                         return theLockingInset()->lockInsetInInset(this, inset);
 713                                 }
 714                         }
 715                 }
 716                 return false;
 717         }
 718         return theLockingInset()->lockInsetInInset(this, inset);
 719 }
 720
 721
 722 void BufferView::showLockedInsetCursor(int x, int y, int asc, int desc)
 723 {
 724         if (available() && theLockingInset() && !theLockingInset()->nodraw()) {
 725                 LyXCursor cursor = text->cursor;
 726                 Inset * locking_inset = theLockingInset()->getLockingInset();
 727
 728                 if ((cursor.pos() - 1 >= 0) &&
 729                     cursor.par()->isInset(cursor.pos() - 1) &&
 730                     (cursor.par()->getInset(cursor.pos() - 1) ==
 731                      locking_inset))
 732                         text->setCursor(this, cursor,
 733                                         cursor.par(), cursor.pos() - 1);
 734                 LyXScreen::Cursor_Shape shape = LyXScreen::BAR_SHAPE;
 735                 LyXText * txt = getLyXText();
 736                 if (locking_inset->isTextInset() &&
 737                     locking_inset->lyxCode() != Inset::ERT_CODE &&
 738                     (txt->real_current_font.language() !=
 739                      buffer()->params.language
 740                      || txt->real_current_font.isVisibleRightToLeft()
 741                      != buffer()->params.language->RightToLeft()))
 742                         shape = (txt->real_current_font.isVisibleRightToLeft())
 743                                 ? LyXScreen::REVERSED_L_SHAPE
 744                                 : LyXScreen::L_SHAPE;
 745                 y += cursor.iy() + theLockingInset()->insetInInsetY();
 746                 screen().showManualCursor(text, x, y, asc, desc,
 747                                                   shape);
 748         }
 749 }
 750
 751
 752 void BufferView::hideLockedInsetCursor()
 753 {
 754         if (theLockingInset() && available()) {
 755                 screen().hideCursor();
 756         }
 757 }
 758
 759
 760 bool BufferView::fitLockedInsetCursor(int x, int y, int asc, int desc)
 761 {
 762         if (theLockingInset() && available()) {
 763                 y += text->cursor.iy() + theLockingInset()->insetInInsetY();
 764                 if (screen().fitManualCursor(this, text, x, y, asc, desc)) {
 765                         updateScrollbar();
 766                         return true;
 767                 }
 768         }
 769         return false;
 770 }
 771
 772
 773 int BufferView::unlockInset(UpdatableInset * inset)
 774 {
 775         if (!inset)
 776                 return 0;
 777         if (inset && theLockingInset() == inset) {
 778                 inset->insetUnlock(this);
 779                 theLockingInset(0);
 780                 // make sure we update the combo !
 781                 owner()->setLayout(getLyXText()->cursor.par()->layout()->name());
 782                 // Tell the paragraph dialog that we changed paragraph
 783                 owner()->getDialogs().updateParagraph();
 784                 finishUndo();
 785                 return 0;
 786         } else if (inset && theLockingInset() &&
 787                    theLockingInset()->unlockInsetInInset(this, inset)) {
 788                 // Tell the paragraph dialog that we changed paragraph
 789                 owner()->getDialogs().updateParagraph();
 790                 // owner inset has updated the layout combo
 791                 finishUndo();
 792                 return 0;
 793         }
 794         return bufferlist.unlockInset(inset);
 795 }
 796
 797
 798 void BufferView::lockedInsetStoreUndo(Undo::undo_kind kind)
 799 {
 800         if (!theLockingInset())
 801                 return; // shouldn't happen
 802         if (kind == Undo::EDIT) // in this case insets would not be stored!
 803                 kind = Undo::FINISH;
 804         setUndo(this, kind,
 805                 text->cursor.par(),
 806                 text->cursor.par()->next());
 807 }
 808
 809
 810 void BufferView::updateInset(Inset * inset, bool mark_dirty)
 811 {
 812         pimpl_->updateInset(inset, mark_dirty);
 813 }
 814
 815
 816 bool BufferView::ChangeInsets(Inset::Code code,
 817                               string const & from, string const & to)
 818 {
 819         bool need_update = false;
 820         LyXCursor cursor = text->cursor;
 821         LyXCursor tmpcursor = cursor;
 822         cursor.par(tmpcursor.par());
 823         cursor.pos(tmpcursor.pos());
 824
 825         ParIterator end = buffer()->par_iterator_end();
 826         for (ParIterator it = buffer()->par_iterator_begin();
 827              it != end; ++it) {
 828                 Paragraph * par = *it;
 829                 bool changed_inset = false;
 830                 for (InsetList::iterator it2 = par->insetlist.begin();
 831                      it2 != par->insetlist.end(); ++it2) {
 832                         if (it2.getInset()->lyxCode() == code) {
 833                                 InsetCommand * inset = static_cast<InsetCommand *>(it2.getInset());
 834                                 if (inset->getContents() == from) {
 835                                         inset->setContents(to);
 836                                         changed_inset = true;
 837                                 }
 838                         }
 839                 }
 840                 if (changed_inset) {
 841                         need_update = true;
 842
 843                         // FIXME
 844
 845                         // The test it.size()==1 was needed to prevent crashes.
 846                         // How to set the cursor corretly when it.size()>1 ??
 847                         if (it.size() == 1) {
 848                                 text->setCursorIntern(this, par, 0);
 849                                 text->redoParagraphs(this, text->cursor,
 850                                                      text->cursor.par()->next());
 851                                 text->fullRebreak(this);
 852                         }
 853                 }
 854         }
 855         text->setCursorIntern(this, cursor.par(), cursor.pos());
 856         return need_update;
 857 }
 858
 859
 860 bool BufferView::ChangeRefsIfUnique(string const & from, string const & to)
 861 {
 862         // Check if the label 'from' appears more than once
 863         vector<string> labels = buffer()->getLabelList();
 864
 865         if (lyx::count(labels.begin(), labels.end(), from) > 1)
 866                 return false;
 867
 868         return ChangeInsets(Inset::REF_CODE, from, to);
 869 }
 870
 871
 872 bool BufferView::ChangeCitationsIfUnique(string const & from,
 873                                          string const & to)
 874 {
 875         typedef pair<string, string> StringPair;
 876
 877         vector<StringPair> keys = buffer()->getBibkeyList();
 878         if (count_if(keys.begin(), keys.end(),
 879                      lyx::equal_1st_in_pair<StringPair>(from))
 880             > 1)
 881                 return false;
 882
 883         return ChangeInsets(Inset::CITE_CODE, from, to);
 884 }
 885
 886
 887 UpdatableInset * BufferView::theLockingInset() const
 888 {
 889         // If NULL is not allowed we should put an Assert here. (Lgb)
 890         if (text)
 891                 return text->the_locking_inset;
 892         return 0;
 893 }
 894
 895
 896 void BufferView::theLockingInset(UpdatableInset * inset)
 897 {
 898         text->the_locking_inset = inset;
 899 }
 900
 901
 902 LyXText * BufferView::getLyXText() const
 903 {
 904         if (theLockingInset()) {
 905                 LyXText * txt = theLockingInset()->getLyXText(this, true);
 906                 if (txt)
 907                         return txt;
 908         }
 909         return text;
 910 }
 911
 912
 913 LyXText * BufferView::getParentText(Inset * inset) const
 914 {
 915         if (inset->owner()) {
 916                 LyXText * txt = inset->getLyXText(this);
 917                 inset = inset->owner();
 918                 while (inset && inset->getLyXText(this) == txt)
 919                         inset = inset->owner();
 920                 if (inset)
 921                         return inset->getLyXText(this);
 922         }
 923         return text;
 924 }
 925
 926
 927 Language const * BufferView::getParentLanguage(Inset * inset) const
 928 {
 929         LyXText * text = getParentText(inset);
 930         return text->cursor.par()->getFontSettings(buffer()->params,
 931                                                    text->cursor.pos()).language();
 932 }
 933
 934
 935 Encoding const * BufferView::getEncoding() const
 936 {
 937         LyXText * t = getLyXText();
 938         if (!t)
 939                 return 0;
 940
 941         LyXCursor const & c= t->cursor;
 942         LyXFont const font = c.par()->getFont(buffer()->params, c.pos());
 943         return font.language()->encoding();
 944 }
 945
 946
 947 void BufferView::haveSelection(bool sel)
 948 {
 949         pimpl_->workarea().haveSelection(sel);
 950 }
 951
 952
 953 int BufferView::workHeight() const
 954 {
 955         return pimpl_->workarea().workHeight();
 956 }