src/BufferView.C

   1 /**
   2  * \file BufferView.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Alfredo Braunstein
   7  * \author Lars Gullik Bjønnes
   8  * \author John Levon
   9  * \author André Pönitz
  10  * \author Jürgen Vigna
  11  *
  12  * Full author contact details are available in file CREDITS.
  13  */
  14
  15 #include <config.h>
  16
  17 #include "BufferView.h"
  18
  19 #include "buffer.h"
  20 #include "buffer_funcs.h"
  21 #include "bufferparams.h"
  22 #include "coordcache.h"
  23 #include "CutAndPaste.h"
  24 #include "debug.h"
  25 #include "dispatchresult.h"
  26 #include "errorlist.h"
  27 #include "factory.h"
  28 #include "FloatList.h"
  29 #include "funcrequest.h"
  30 #include "FuncStatus.h"
  31 #include "gettext.h"
  32 #include "intl.h"
  33 #include "insetiterator.h"
  34 #include "language.h"
  35 #include "LaTeXFeatures.h"
  36 #include "lyx_cb.h" // added for Dispatch functions
  37 #include "lyx_main.h"
  38 #include "lyxfind.h"
  39 #include "lyxfunc.h"
  40 #include "lyxlayout.h"
  41 #include "lyxtext.h"
  42 #include "lyxtextclass.h"
  43 #include "lyxrc.h"
  44 #include "session.h"
  45 #include "paragraph.h"
  46 #include "paragraph_funcs.h"
  47 #include "ParagraphParameters.h"
  48 #include "pariterator.h"
  49 #include "texrow.h"
  50 #include "toc.h"
  51 #include "undo.h"
  52 #include "vspace.h"
  53 #include "WordLangTuple.h"
  54 #include "metricsinfo.h"
  55
  56 #include "insets/insetbibtex.h"
  57 #include "insets/insetcommand.h" // ChangeRefs
  58 #include "insets/insetref.h"
  59 #include "insets/insettext.h"
  60
  61 #include "frontends/Alert.h"
  62 #include "frontends/Application.h"
  63 #include "frontends/FileDialog.h"
  64 #include "frontends/font_metrics.h"
  65
  66 #include "graphics/Previews.h"
  67
  68 #include "support/convert.h"
  69 #include "support/filefilterlist.h"
  70 #include "support/filetools.h"
  71 #include "support/package.h"
  72 #include "support/types.h"
  73
  74 #include <boost/bind.hpp>
  75 #include <boost/current_function.hpp>
  76
  77 #include <functional>
  78 #include <vector>
  79
  80
  81 using lyx::docstring;
  82 using lyx::pos_type;
  83
  84 using lyx::support::addPath;
  85 using lyx::support::bformat;
  86 using lyx::support::FileFilterList;
  87 using lyx::support::fileSearch;
  88 using lyx::support::isDirWriteable;
  89 using lyx::support::makeDisplayPath;
  90 using lyx::support::makeAbsPath;
  91 using lyx::support::package;
  92
  93 using std::distance;
  94 using std::endl;
  95 using std::istringstream;
  96 using std::find;
  97 using std::make_pair;
  98 using std::min;
  99 using std::max;
 100 using std::mem_fun_ref;
 101 using std::string;
 102 using std::vector;
 103
 104
 105 namespace {
 106
 107 unsigned int const saved_positions_num = 20;
 108
 109
 110 /// Return an inset of this class if it exists at the current cursor position
 111 template <class T>
 112 T * getInsetByCode(LCursor & cur, InsetBase::Code code)
 113 {
 114         T * inset = 0;
 115         DocIterator it = cur;
 116         if (it.nextInset() &&
 117             it.nextInset()->lyxCode() == code) {
 118                 inset = static_cast<T*>(it.nextInset());
 119         }
 120         return inset;
 121 }
 122
 123 } // anon namespace
 124
 125
 126 BufferView::BufferView()
 127         : buffer_(0), wh_(0),
 128           cursor_(*this),
 129           multiparsel_cache_(false), anchor_ref_(0), offset_ref_(0),
 130           intl_(new Intl)
 131 {
 132         xsel_cache_.set = false;
 133
 134         saved_positions.resize(saved_positions_num);
 135         // load saved bookmarks
 136         lyx::Session::BookmarkList & bmList = LyX::ref().session().loadBookmarks();
 137         for (lyx::Session::BookmarkList::iterator bm = bmList.begin();
 138                 bm != bmList.end(); ++bm)
 139                 if (bm->get<0>() < saved_positions_num)
 140                         saved_positions[bm->get<0>()] = Position( bm->get<1>(), bm->get<2>(), bm->get<3>() );
 141         // and then clear them
 142         bmList.clear();
 143
 144         intl_->initKeyMapper(lyxrc.use_kbmap);
 145 }
 146
 147
 148 BufferView::~BufferView()
 149 {
 150 }
 151
 152
 153 Buffer * BufferView::buffer() const
 154 {
 155         return buffer_;
 156 }
 157
 158
 159 void BufferView::setBuffer(Buffer * b)
 160 {
 161         lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 162                             << "[ b = " << b << "]" << endl;
 163
 164         if (buffer_) {
 165                 // Save the actual cursor position and anchor inside the
 166                 // buffer so that it can be restored in case we rechange
 167                 // to this buffer later on.
 168                 buffer_->saveCursor(cursor_.selectionBegin(),
 169                                     cursor_.selectionEnd());
 170                 // current buffer is going to be switched-off, save cursor pos
 171                 LyX::ref().session().saveFilePosition(buffer_->fileName(),
 172                         boost::tie(cursor_.pit(), cursor_.pos()) );
 173         }
 174
 175         // If we're quitting lyx, don't bother updating stuff
 176         if (quitting) {
 177                 buffer_ = 0;
 178                 return;
 179         }
 180
 181         // If we are closing current buffer, switch to the first in
 182         // buffer list.
 183         if (!b) {
 184                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 185                                     << " No Buffer!" << endl;
 186                 // We are closing the buffer, use the first buffer as current
 187                 buffer_ = theApp->bufferList().first();
 188         } else {
 189                 // Set current buffer
 190                 buffer_ = b;
 191         }
 192
 193         // Reset old cursor
 194         cursor_ = LCursor(*this);
 195         anchor_ref_ = 0;
 196         offset_ref_ = 0;
 197
 198         if (buffer_) {
 199                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 200                                     << "Buffer addr: " << buffer_ << endl;
 201                 cursor_.push(buffer_->inset());
 202                 cursor_.resetAnchor();
 203                 buffer_->text().init(this);
 204                 buffer_->text().setCurrentFont(cursor_);
 205                 if (buffer_->getCursor().size() > 0 &&
 206                     buffer_->getAnchor().size() > 0)
 207                 {
 208                         cursor_.setCursor(buffer_->getAnchor().asDocIterator(&(buffer_->inset())));
 209                         cursor_.resetAnchor();
 210                         cursor_.setCursor(buffer_->getCursor().asDocIterator(&(buffer_->inset())));
 211                         cursor_.setSelection();
 212                 }
 213         }
 214
 215         update();
 216
 217         if (buffer_ && lyx::graphics::Previews::status() != LyXRC::PREVIEW_OFF)
 218                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 219 }
 220
 221
 222 bool BufferView::loadLyXFile(string const & filename, bool tolastfiles)
 223 {
 224         // Get absolute path of file and add ".lyx"
 225         // to the filename if necessary
 226         string s = fileSearch(string(), filename, "lyx");
 227
 228         bool const found = !s.empty();
 229
 230         if (!found)
 231                 s = filename;
 232
 233         // File already open?
 234         if (theApp->bufferList().exists(s)) {
 235                 docstring const file = makeDisplayPath(s, 20);
 236                 docstring text = bformat(_("The document %1$s is already "
 237                                                      "loaded.\n\nDo you want to revert "
 238                                                      "to the saved version?"), file);
 239                 int const ret = Alert::prompt(_("Revert to saved document?"),
 240                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 241
 242                 if (ret != 0) {
 243                         setBuffer(theApp->bufferList().getBuffer(s));
 244                         return true;
 245                 }
 246                 // FIXME: should be LFUN_REVERT
 247                 if (!theApp->bufferList().close(theApp->bufferList().getBuffer(s), false))
 248                         return false;
 249                 // Fall through to new load. (Asger)
 250         }
 251
 252         Buffer * b = 0;
 253
 254         if (found) {
 255                 b = theApp->bufferList().newBuffer(s);
 256                 if (!::loadLyXFile(b, s)) {
 257                         theApp->bufferList().release(b);
 258                         return false;
 259                 }
 260         } else {
 261                 docstring text = bformat(_("The document %1$s does not yet "
 262                                                      "exist.\n\nDo you want to create "
 263                                                      "a new document?"), lyx::from_utf8(s));
 264                 int const ret = Alert::prompt(_("Create new document?"),
 265                          text, 0, 1, _("&Create"), _("Cancel"));
 266
 267                 if (ret == 0) {
 268                         b = newFile(s, string(), true);
 269                         if (!b)
 270                                 return false;
 271                 } else
 272                         return false;
 273         }
 274
 275         setBuffer(b);
 276         // Send the "errors" signal in case of parsing errors
 277         b->errors("Parse");
 278
 279         // scroll to the position when the file was last closed
 280         if (lyxrc.use_lastfilepos) {
 281                 lyx::pit_type pit;
 282                 lyx::pos_type pos;
 283                 boost::tie(pit, pos) = LyX::ref().session().loadFilePosition(s);
 284                 // I am not sure how to separate the following part to a function
 285                 // so I will leave this to Lars.
 286                 //
 287                 // check pit since the document may be externally changed.
 288                 if ( static_cast<size_t>(pit) < b->paragraphs().size() ) {
 289                         ParIterator it = b->par_iterator_begin();
 290                         ParIterator const end = b->par_iterator_end();
 291                         for (; it != end; ++it)
 292                                 if (it.pit() == pit) {
 293                                         // restored pos may be bigger than it->size
 294                                         setCursor(makeDocIterator(it, min(pos, it->size())));
 295                                         update(Update::FitCursor);
 296                                         break;
 297                                 }
 298                 }
 299         }
 300
 301         if (tolastfiles)
 302                 LyX::ref().session().addLastFile(b->fileName());
 303
 304         return true;
 305 }
 306
 307
 308 void BufferView::reload()
 309 {
 310         string const fn = buffer_->fileName();
 311         if (theApp->bufferList().close(buffer_, false))
 312                 loadLyXFile(fn);
 313 }
 314
 315
 316 void BufferView::resize()
 317 {
 318         if (!buffer_)
 319                 return;
 320
 321         lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION << endl;
 322
 323         buffer_->text().init(this);
 324         update();
 325         switchKeyMap();
 326 }
 327
 328
 329 bool BufferView::fitCursor()
 330 {
 331         if (bv_funcs::status(this, cursor_) == bv_funcs::CUR_INSIDE) {
 332                 LyXFont const font = cursor_.getFont();
 333                 int const asc = font_metrics::maxAscent(font);
 334                 int const des = font_metrics::maxDescent(font);
 335                 Point const p = bv_funcs::getPos(cursor_, cursor_.boundary());
 336                 if (p.y_ - asc >= 0 && p.y_ + des < height_)
 337                         return false;
 338         }
 339         center();
 340         return true;
 341 }
 342
 343
 344 bool BufferView::multiParSel()
 345 {
 346         if (!cursor_.selection())
 347                 return false;
 348         bool ret = multiparsel_cache_;
 349         multiparsel_cache_ = cursor_.selBegin().pit() != cursor_.selEnd().pit();
 350         // Either this, or previous selection spans paragraphs
 351         return ret || multiparsel_cache_;
 352 }
 353
 354
 355 bool BufferView::update(Update::flags flags)
 356 {
 357         // This is close to a hot-path.
 358         if (lyxerr.debugging(Debug::DEBUG)) {
 359                 lyxerr[Debug::DEBUG]
 360                         << BOOST_CURRENT_FUNCTION
 361                         << "[fitcursor = " << (flags & Update::FitCursor)
 362                         << ", forceupdate = " << (flags & Update::Force)
 363                         << ", singlepar = " << (flags & Update::SinglePar)
 364                         << "]  buffer: " << buffer_ << endl;
 365         }
 366
 367         // Check needed to survive LyX startup
 368         if (!buffer_)
 369                 return false;
 370
 371         // Update macro store
 372         buffer_->buildMacros();
 373
 374         // First drawing step
 375         updateMetrics(flags & Update::SinglePar);
 376
 377         // The second drawing step is done in WorkArea::redraw() if needed.
 378         bool const need_second_step =
 379                 (flags & (Update::Force | Update::FitCursor | Update::MultiParSel))
 380                 && (fitCursor() || multiParSel());
 381
 382         return need_second_step;
 383 }
 384
 385
 386 void BufferView::updateScrollbar()
 387 {
 388         if (!buffer_) {
 389                 lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION
 390                                      << " no text in updateScrollbar" << endl;
 391                 scrollbarParameters_.reset();
 392                 return;
 393         }
 394
 395         LyXText & t = buffer_->text();
 396         int const parsize = int(t.paragraphs().size() - 1);
 397         if (anchor_ref_ >  parsize)  {
 398                 anchor_ref_ = parsize;
 399                 offset_ref_ = 0;
 400         }
 401
 402         lyxerr[Debug::GUI]
 403                 << BOOST_CURRENT_FUNCTION
 404                 << " Updating scrollbar: height: " << t.paragraphs().size()
 405                 << " curr par: " << cursor_.bottom().pit()
 406                 << " default height " << defaultRowHeight() << endl;
 407
 408         // It would be better to fix the scrollbar to understand
 409         // values in [0..1] and divide everything by wh
 410
 411         // estimated average paragraph height:
 412         if (wh_ == 0)
 413                 wh_ = height_ / 4;
 414         int h = t.getPar(anchor_ref_).height();
 415
 416         // Normalize anchor/offset (MV):
 417         while (offset_ref_ > h && anchor_ref_ < parsize) {
 418                 anchor_ref_++;
 419                 offset_ref_ -= h;
 420                 h = t.getPar(anchor_ref_).height();
 421         }
 422         // Look at paragraph heights on-screen
 423         int sumh = 0;
 424         int nh = 0;
 425         for (lyx::pit_type pit = anchor_ref_; pit <= parsize; ++pit) {
 426                 if (sumh > height_)
 427                         break;
 428                 int const h2 = t.getPar(pit).height();
 429                 sumh += h2;
 430                 nh++;
 431         }
 432         int const hav = sumh / nh;
 433         // More realistic average paragraph height
 434         if (hav > wh_)
 435                 wh_ = hav;
 436
 437         scrollbarParameters_.height = (parsize + 1) * wh_;
 438         scrollbarParameters_.position = anchor_ref_ * wh_ + int(offset_ref_ * wh_ / float(h));
 439         scrollbarParameters_.lineScrollHeight = int(wh_ * defaultRowHeight() / float(h));
 440 }
 441
 442
 443 ScrollbarParameters const & BufferView::scrollbarParameters() const
 444 {
 445         return scrollbarParameters_;
 446 }
 447
 448
 449 void BufferView::scrollDocView(int value)
 450 {
 451         lyxerr[Debug::GUI] << BOOST_CURRENT_FUNCTION
 452                            << "[ value = " << value << "]" << endl;
 453
 454         if (!buffer_)
 455                 return;
 456
 457         LyXText & t = buffer_->text();
 458
 459         float const bar = value / float(wh_ * t.paragraphs().size());
 460
 461         anchor_ref_ = int(bar * t.paragraphs().size());
 462         if (anchor_ref_ >  int(t.paragraphs().size()) - 1)
 463                 anchor_ref_ = int(t.paragraphs().size()) - 1;
 464         t.redoParagraph(anchor_ref_);
 465         int const h = t.getPar(anchor_ref_).height();
 466         offset_ref_ = int((bar * t.paragraphs().size() - anchor_ref_) * h);
 467 }
 468
 469
 470 void BufferView::setCursorFromScrollbar()
 471 {
 472         LyXText & t = buffer_->text();
 473
 474         int const height = 2 * defaultRowHeight();
 475         int const first = height;
 476         int const last = height_ - height;
 477         LCursor & cur = cursor_;
 478
 479         bv_funcs::CurStatus st = bv_funcs::status(this, cur);
 480
 481         switch (st) {
 482         case bv_funcs::CUR_ABOVE:
 483                 t.setCursorFromCoordinates(cur, 0, first);
 484                 cur.clearSelection();
 485                 break;
 486         case bv_funcs::CUR_BELOW:
 487                 t.setCursorFromCoordinates(cur, 0, last);
 488                 cur.clearSelection();
 489                 break;
 490         case bv_funcs::CUR_INSIDE:
 491                 int const y = bv_funcs::getPos(cur, cur.boundary()).y_;
 492                 int const newy = min(last, max(y, first));
 493                 if (y != newy) {
 494                         cur.reset(buffer_->inset());
 495                         t.setCursorFromCoordinates(cur, 0, newy);
 496                 }
 497         }
 498 }
 499
 500
 501 Change const BufferView::getCurrentChange()
 502 {
 503         if (!buffer_->params().tracking_changes || !cursor_.selection())
 504                 return Change(Change::UNCHANGED);
 505
 506         DocIterator dit = cursor_.selectionBegin();
 507         return dit.paragraph().lookupChange(dit.pos());
 508 }
 509
 510
 511 void BufferView::savePosition(unsigned int i)
 512 {
 513         if (i >= saved_positions_num)
 514                 return;
 515         BOOST_ASSERT(cursor_.inTexted());
 516         saved_positions[i] = Position(buffer_->fileName(),
 517                                       cursor_.paragraph().id(),
 518                                       cursor_.pos());
 519         if (i > 0)
 520                 // emit message signal.
 521                 message(bformat(_("Saved bookmark %1$d"), i));
 522 }
 523
 524
 525 void BufferView::restorePosition(unsigned int i)
 526 {
 527         if (i >= saved_positions_num)
 528                 return;
 529
 530         string const fname = saved_positions[i].filename;
 531
 532         cursor_.clearSelection();
 533
 534         if (fname != buffer_->fileName()) {
 535                 Buffer * b = 0;
 536                 if (theApp->bufferList().exists(fname))
 537                         b = theApp->bufferList().getBuffer(fname);
 538                 else {
 539                         b = theApp->bufferList().newBuffer(fname);
 540                         // Don't ask, just load it
 541                         ::loadLyXFile(b, fname);
 542                 }
 543                 if (b)
 544                         setBuffer(b);
 545         }
 546
 547         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 548         if (par == buffer_->par_iterator_end())
 549                 return;
 550
 551         setCursor(makeDocIterator(par, min(par->size(), saved_positions[i].par_pos)));
 552
 553         if (i > 0)
 554                 // emit message signal.
 555                 message(bformat(_("Moved to bookmark %1$d"), i));
 556 }
 557
 558
 559 bool BufferView::isSavedPosition(unsigned int i)
 560 {
 561         return i < saved_positions_num && !saved_positions[i].filename.empty();
 562 }
 563
 564 void BufferView::saveSavedPositions()
 565 {
 566         // save bookmarks. It is better to use the pit interface
 567         // but I do not know how to effectively convert between
 568         // par_id and pit.
 569         for (unsigned int i=1; i < saved_positions_num; ++i) {
 570                 if ( isSavedPosition(i) )
 571                         LyX::ref().session().saveBookmark( boost::tie(
 572                                 i,
 573                                 saved_positions[i].filename,
 574                                 saved_positions[i].par_id,
 575                                 saved_positions[i].par_pos) );
 576         }
 577 }
 578
 579 void BufferView::switchKeyMap()
 580 {
 581         if (!lyxrc.rtl_support)
 582                 return;
 583
 584         if (getLyXText()->real_current_font.isRightToLeft()) {
 585                 if (intl_->keymap == Intl::PRIMARY)
 586                         intl_->keyMapSec();
 587         } else {
 588                 if (intl_->keymap == Intl::SECONDARY)
 589                         intl_->keyMapPrim();
 590         }
 591 }
 592
 593
 594 int BufferView::workWidth() const
 595 {
 596         return width_;
 597 }
 598
 599
 600 void BufferView::center()
 601 {
 602         CursorSlice & bot = cursor_.bottom();
 603         lyx::pit_type const pit = bot.pit();
 604         bot.text()->redoParagraph(pit);
 605         Paragraph const & par = bot.text()->paragraphs()[pit];
 606         anchor_ref_ = pit;
 607         offset_ref_ = bv_funcs::coordOffset(cursor_, cursor_.boundary()).y_
 608                 + par.ascent() - height_ / 2;
 609 }
 610
 611
 612 FuncStatus BufferView::getStatus(FuncRequest const & cmd)
 613 {
 614         FuncStatus flag;
 615
 616         switch (cmd.action) {
 617
 618         case LFUN_UNDO:
 619                 flag.enabled(!buffer_->undostack().empty());
 620                 break;
 621         case LFUN_REDO:
 622                 flag.enabled(!buffer_->redostack().empty());
 623                 break;
 624         case LFUN_FILE_INSERT:
 625         case LFUN_FILE_INSERT_ASCII_PARA:
 626         case LFUN_FILE_INSERT_ASCII:
 627         case LFUN_BOOKMARK_SAVE:
 628                 // FIXME: Actually, these LFUNS should be moved to LyXText
 629                 flag.enabled(cursor_.inTexted());
 630                 break;
 631         case LFUN_FONT_STATE:
 632         case LFUN_LABEL_INSERT:
 633         case LFUN_PARAGRAPH_GOTO:
 634         // FIXME handle non-trivially
 635         case LFUN_OUTLINE_UP:
 636         case LFUN_OUTLINE_DOWN:
 637         case LFUN_OUTLINE_IN:
 638         case LFUN_OUTLINE_OUT:
 639         case LFUN_NOTE_NEXT:
 640         case LFUN_REFERENCE_NEXT:
 641         case LFUN_WORD_FIND:
 642         case LFUN_WORD_REPLACE:
 643         case LFUN_MARK_OFF:
 644         case LFUN_MARK_ON:
 645         case LFUN_MARK_TOGGLE:
 646         case LFUN_SCREEN_RECENTER:
 647         case LFUN_BIBTEX_DATABASE_ADD:
 648         case LFUN_BIBTEX_DATABASE_DEL:
 649         case LFUN_WORDS_COUNT:
 650         case LFUN_NEXT_INSET_TOGGLE:
 651                 flag.enabled(true);
 652                 break;
 653
 654         case LFUN_LABEL_GOTO: {
 655                 flag.enabled(!cmd.argument().empty()
 656                     || getInsetByCode<InsetRef>(cursor_, InsetBase::REF_CODE));
 657                 break;
 658         }
 659
 660         case LFUN_BOOKMARK_GOTO:
 661                 flag.enabled(isSavedPosition(convert<unsigned int>(lyx::to_utf8(cmd.argument()))));
 662                 break;
 663         case LFUN_CHANGES_TRACK:
 664                 flag.enabled(true);
 665                 flag.setOnOff(buffer_->params().tracking_changes);
 666                 break;
 667
 668         case LFUN_CHANGES_OUTPUT: {
 669                 OutputParams runparams;
 670                 LaTeXFeatures features(*buffer_, buffer_->params(), runparams);
 671                 flag.enabled(buffer_ && buffer_->params().tracking_changes
 672                         && features.isAvailable("dvipost"));
 673                 flag.setOnOff(buffer_->params().output_changes);
 674                 break;
 675         }
 676
 677         case LFUN_CHANGES_MERGE:
 678         case LFUN_CHANGE_ACCEPT: // what about these two
 679         case LFUN_CHANGE_REJECT: // what about these two
 680         case LFUN_ALL_CHANGES_ACCEPT:
 681         case LFUN_ALL_CHANGES_REJECT:
 682                 flag.enabled(buffer_ && buffer_->params().tracking_changes);
 683                 break;
 684
 685         case LFUN_BUFFER_TOGGLE_COMPRESSION: {
 686                 flag.setOnOff(buffer_->params().compressed);
 687                 break;
 688         }
 689
 690         default:
 691                 flag.enabled(false);
 692         }
 693
 694         return flag;
 695 }
 696
 697
 698 bool BufferView::dispatch(FuncRequest const & cmd)
 699 {
 700         //lyxerr << BOOST_CURRENT_FUNCTION
 701         //       << [ cmd = " << cmd << "]" << endl;
 702
 703         // Make sure that the cached BufferView is correct.
 704         lyxerr[Debug::ACTION] << BOOST_CURRENT_FUNCTION
 705                 << " action[" << cmd.action << ']'
 706                 << " arg[" << lyx::to_utf8(cmd.argument()) << ']'
 707                 << " x[" << cmd.x << ']'
 708                 << " y[" << cmd.y << ']'
 709                 << " button[" << cmd.button() << ']'
 710                 << endl;
 711
 712         LCursor & cur = cursor_;
 713
 714         switch (cmd.action) {
 715
 716         case LFUN_UNDO:
 717                 if (buffer_) {
 718                         cur.message(_("Undo"));
 719                         cur.clearSelection();
 720                         if (!textUndo(*this))
 721                                 cur.message(_("No further undo information"));
 722                         update();
 723                         switchKeyMap();
 724                 }
 725                 break;
 726
 727         case LFUN_REDO:
 728                 if (buffer_) {
 729                         cur.message(_("Redo"));
 730                         cur.clearSelection();
 731                         if (!textRedo(*this))
 732                                 cur.message(_("No further redo information"));
 733                         update();
 734                         switchKeyMap();
 735                 }
 736                 break;
 737
 738         case LFUN_FILE_INSERT:
 739                 // FIXME: We don't know the encoding of filenames
 740                 menuInsertLyXFile(lyx::to_utf8(cmd.argument()));
 741                 break;
 742
 743         case LFUN_FILE_INSERT_ASCII_PARA:
 744                 // FIXME: We don't know the encoding of filenames
 745                 insertAsciiFile(this, lyx::to_utf8(cmd.argument()), true);
 746                 break;
 747
 748         case LFUN_FILE_INSERT_ASCII:
 749                 // FIXME: We don't know the encoding of filenames
 750                 insertAsciiFile(this, lyx::to_utf8(cmd.argument()), false);
 751                 break;
 752
 753         case LFUN_FONT_STATE:
 754                 cur.message(lyx::from_utf8(cur.currentState()));
 755                 break;
 756
 757         case LFUN_BOOKMARK_SAVE:
 758                 savePosition(convert<unsigned int>(lyx::to_utf8(cmd.argument())));
 759                 break;
 760
 761         case LFUN_BOOKMARK_GOTO:
 762                 restorePosition(convert<unsigned int>(lyx::to_utf8(cmd.argument())));
 763                 break;
 764
 765         case LFUN_LABEL_GOTO: {
 766                 string label = lyx::to_utf8(cmd.argument());
 767                 if (label.empty()) {
 768                         InsetRef * inset =
 769                                 getInsetByCode<InsetRef>(cursor_,
 770                                                          InsetBase::REF_CODE);
 771                         if (inset) {
 772                                 label = inset->getContents();
 773                                 savePosition(0);
 774                         }
 775                 }
 776
 777                 if (!label.empty())
 778                         gotoLabel(label);
 779                 break;
 780         }
 781
 782         case LFUN_PARAGRAPH_GOTO: {
 783                 int const id = convert<int>(lyx::to_utf8(cmd.argument()));
 784                 ParIterator par = buffer_->getParFromID(id);
 785                 if (par == buffer_->par_iterator_end()) {
 786                         lyxerr[Debug::INFO] << "No matching paragraph found! ["
 787                                             << id << ']' << endl;
 788                         break;
 789                 } else {
 790                         lyxerr[Debug::INFO] << "Paragraph " << par->id()
 791                                             << " found." << endl;
 792                 }
 793
 794                 // Set the cursor
 795                 setCursor(makeDocIterator(par, 0));
 796
 797                 update();
 798                 switchKeyMap();
 799                 break;
 800         }
 801
 802         case LFUN_OUTLINE_UP:
 803                 lyx::toc::outline(lyx::toc::Up, cursor_);
 804                 cursor_.text()->setCursor(cursor_, cursor_.pit(), 0);
 805                 updateLabels(*buffer_);
 806                 break;
 807         case LFUN_OUTLINE_DOWN:
 808                 lyx::toc::outline(lyx::toc::Down, cursor_);
 809                 cursor_.text()->setCursor(cursor_, cursor_.pit(), 0);
 810                 updateLabels(*buffer_);
 811                 break;
 812         case LFUN_OUTLINE_IN:
 813                 lyx::toc::outline(lyx::toc::In, cursor_);
 814                 updateLabels(*buffer_);
 815                 break;
 816         case LFUN_OUTLINE_OUT:
 817                 lyx::toc::outline(lyx::toc::Out, cursor_);
 818                 updateLabels(*buffer_);
 819                 break;
 820
 821         case LFUN_NOTE_NEXT:
 822                 bv_funcs::gotoInset(this, InsetBase::NOTE_CODE, false);
 823                 break;
 824
 825         case LFUN_REFERENCE_NEXT: {
 826                 vector<InsetBase_code> tmp;
 827                 tmp.push_back(InsetBase::LABEL_CODE);
 828                 tmp.push_back(InsetBase::REF_CODE);
 829                 bv_funcs::gotoInset(this, tmp, true);
 830                 break;
 831         }
 832
 833         case LFUN_CHANGES_TRACK:
 834                 trackChanges();
 835                 break;
 836
 837         case LFUN_CHANGES_OUTPUT: {
 838                 bool const state = buffer_->params().output_changes;
 839                 buffer_->params().output_changes = !state;
 840                 break;
 841         }
 842
 843         case LFUN_CHANGES_MERGE:
 844                 if (lyx::find::findNextChange(this))
 845                         showDialog("changes");
 846                 break;
 847
 848         case LFUN_ALL_CHANGES_ACCEPT: {
 849                 cursor_.reset(buffer_->inset());
 850 #ifdef WITH_WARNINGS
 851 #warning FIXME changes
 852 #endif
 853                 while (lyx::find::findNextChange(this))
 854                         getLyXText()->acceptChange(cursor_);
 855                 update();
 856                 break;
 857         }
 858
 859         case LFUN_ALL_CHANGES_REJECT: {
 860                 cursor_.reset(buffer_->inset());
 861 #ifdef WITH_WARNINGS
 862 #warning FIXME changes
 863 #endif
 864                 while (lyx::find::findNextChange(this))
 865                         getLyXText()->rejectChange(cursor_);
 866                 break;
 867         }
 868
 869         case LFUN_WORD_FIND:
 870                 lyx::find::find(this, cmd);
 871                 break;
 872
 873         case LFUN_WORD_REPLACE:
 874                 lyx::find::replace(this, cmd);
 875                 break;
 876
 877         case LFUN_MARK_OFF:
 878                 cur.clearSelection();
 879                 cur.resetAnchor();
 880                 cur.message(lyx::from_utf8(N_("Mark off")));
 881                 break;
 882
 883         case LFUN_MARK_ON:
 884                 cur.clearSelection();
 885                 cur.mark() = true;
 886                 cur.resetAnchor();
 887                 cur.message(lyx::from_utf8(N_("Mark on")));
 888                 break;
 889
 890         case LFUN_MARK_TOGGLE:
 891                 cur.clearSelection();
 892                 if (cur.mark()) {
 893                         cur.mark() = false;
 894                         cur.message(lyx::from_utf8(N_("Mark removed")));
 895                 } else {
 896                         cur.mark() = true;
 897                         cur.message(lyx::from_utf8(N_("Mark set")));
 898                 }
 899                 cur.resetAnchor();
 900                 break;
 901
 902         case LFUN_SCREEN_RECENTER:
 903                 center();
 904                 break;
 905
 906         case LFUN_BIBTEX_DATABASE_ADD: {
 907                 LCursor tmpcur = cursor_;
 908                 bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
 909                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
 910                                                 InsetBase::BIBTEX_CODE);
 911                 if (inset) {
 912                         if (inset->addDatabase(lyx::to_utf8(cmd.argument())))
 913                                 buffer_->updateBibfilesCache();
 914                 }
 915                 break;
 916         }
 917
 918         case LFUN_BIBTEX_DATABASE_DEL: {
 919                 LCursor tmpcur = cursor_;
 920                 bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
 921                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
 922                                                 InsetBase::BIBTEX_CODE);
 923                 if (inset) {
 924                         if (inset->delDatabase(lyx::to_utf8(cmd.argument())))
 925                                 buffer_->updateBibfilesCache();
 926                 }
 927                 break;
 928         }
 929
 930         case LFUN_WORDS_COUNT: {
 931                 DocIterator from, to;
 932                 if (cur.selection()) {
 933                         from = cur.selectionBegin();
 934                         to = cur.selectionEnd();
 935                 } else {
 936                         from = doc_iterator_begin(buffer_->inset());
 937                         to = doc_iterator_end(buffer_->inset());
 938                 }
 939                 int const count = countWords(from, to);
 940                 docstring message;
 941                 if (count != 1) {
 942                         if (cur.selection())
 943                                 message = bformat(_("%1$d words in selection."),
 944                                           count);
 945                                 else
 946                                         message = bformat(_("%1$d words in document."),
 947                                                           count);
 948                 }
 949                 else {
 950                         if (cur.selection())
 951                                 message = _("One word in selection.");
 952                         else
 953                                 message = _("One word in document.");
 954                 }
 955
 956                 Alert::information(_("Count words"), message);
 957         }
 958                 break;
 959
 960         case LFUN_BUFFER_TOGGLE_COMPRESSION:
 961                 // turn compression on/off
 962                 buffer_->params().compressed = !buffer_->params().compressed;
 963                 break;
 964
 965         case LFUN_NEXT_INSET_TOGGLE: {
 966                 // this is the real function we want to invoke
 967                 FuncRequest tmpcmd = FuncRequest(LFUN_INSET_TOGGLE, cmd.origin);
 968                 // if there is an inset at cursor, see whether it
 969                 // wants to toggle.
 970                 InsetBase * inset = cur.nextInset();
 971                 if (inset && inset->isActive()) {
 972                         LCursor tmpcur = cur;
 973                         tmpcur.pushLeft(*inset);
 974                         inset->dispatch(tmpcur, tmpcmd);
 975                         if (tmpcur.result().dispatched()) {
 976                                 cur.dispatched();
 977                         }
 978                 }
 979                 // if it did not work, try the underlying inset.
 980                 if (!cur.result().dispatched())
 981                         cur.dispatch(tmpcmd);
 982
 983                 if (cur.result().dispatched())
 984                         cur.clearSelection();
 985
 986                 break;
 987         }
 988
 989         default:
 990                 return false;
 991         }
 992
 993         return true;
 994 }
 995
 996
 997 docstring const BufferView::requestSelection()
 998 {
 999         if (!buffer_)
1000                 return docstring();
1001
1002         LCursor & cur = cursor_;
1003
1004         if (!cur.selection()) {
1005                 xsel_cache_.set = false;
1006                 return docstring();
1007         }
1008
1009         if (!xsel_cache_.set ||
1010             cur.top() != xsel_cache_.cursor ||
1011             cur.anchor_.top() != xsel_cache_.anchor)
1012         {
1013                 xsel_cache_.cursor = cur.top();
1014                 xsel_cache_.anchor = cur.anchor_.top();
1015                 xsel_cache_.set = cur.selection();
1016                 return cur.selectionAsString(false);
1017         }
1018         return docstring();
1019 }
1020
1021
1022 void BufferView::clearSelection()
1023 {
1024         if (buffer_) {
1025                 cursor_.clearSelection();
1026                 xsel_cache_.set = false;
1027         }
1028 }
1029
1030
1031 void BufferView::workAreaResize(int width, int height)
1032 {
1033         bool const widthChange = width != width_;
1034         bool const heightChange = height != height_;
1035
1036         // Update from work area
1037         width_ = width;
1038         height_ = height;
1039
1040         if (buffer_ && widthChange) {
1041                 // The WorkArea content needs a resize
1042                 resize();
1043         }
1044
1045         if (widthChange || heightChange)
1046                 update();
1047 }
1048
1049
1050 bool BufferView::workAreaDispatch(FuncRequest const & cmd0)
1051 {
1052         //lyxerr << BOOST_CURRENT_FUNCTION << "[ cmd0 " << cmd0 << "]" << endl;
1053
1054         // This is only called for mouse related events including
1055         // LFUN_FILE_OPEN generated by drag-and-drop.
1056         FuncRequest cmd = cmd0;
1057
1058         if (!buffer_)
1059                 return false;
1060
1061         LCursor cur(*this);
1062         cur.push(buffer_->inset());
1063         cur.selection() = cursor_.selection();
1064
1065         // Doesn't go through lyxfunc, so we need to update
1066         // the layout choice etc. ourselves
1067
1068         // E.g. Qt mouse press when no buffer
1069         if (!buffer_)
1070                 return false;
1071
1072         // Either the inset under the cursor or the
1073         // surrounding LyXText will handle this event.
1074
1075         // Build temporary cursor.
1076         cmd.y = min(max(cmd.y, -1), height_);
1077         InsetBase * inset = buffer_->text().editXY(cur, cmd.x, cmd.y);
1078         //lyxerr << BOOST_CURRENT_FUNCTION
1079         //       << " * hit inset at tip: " << inset << endl;
1080         //lyxerr << BOOST_CURRENT_FUNCTION
1081         //       << " * created temp cursor:" << cur << endl;
1082
1083         // Put anchor at the same position.
1084         cur.resetAnchor();
1085
1086         // Try to dispatch to an non-editable inset near this position
1087         // via the temp cursor. If the inset wishes to change the real
1088         // cursor it has to do so explicitly by using
1089         //  cur.bv().cursor() = cur;  (or similar)
1090         if (inset)
1091                 inset->dispatch(cur, cmd);
1092
1093         // Now dispatch to the temporary cursor. If the real cursor should
1094         // be modified, the inset's dispatch has to do so explicitly.
1095         if (!cur.result().dispatched())
1096                 cur.dispatch(cmd);
1097
1098         if (cur.result().dispatched()) {
1099                 // Redraw if requested or necessary.
1100                 if (cur.result().update())
1101                         update(Update::FitCursor | Update::Force);
1102                 else
1103                         update(Update::FitCursor | Update::MultiParSel);
1104         }
1105
1106         return true;
1107 }
1108
1109
1110 void BufferView::scroll(int lines)
1111 {
1112 //      if (!buffer_)
1113 //              return;
1114 //
1115 //      LyXText const * t = &buffer_->text();
1116 //      int const line_height = defaultRowHeight();
1117 //
1118 //      // The new absolute coordinate
1119 //      int new_top_y = top_y() + lines * line_height;
1120 //
1121 //      // Restrict to a valid value
1122 //      new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
1123 //      new_top_y = std::max(0, new_top_y);
1124 //
1125 //      scrollDocView(new_top_y);
1126 //
1127 //      // Update the scrollbar.
1128 //      workArea_->setScrollbarParams(t->height(), top_y(), defaultRowHeight());}
1129 }
1130
1131
1132 void BufferView::setCursorFromRow(int row)
1133 {
1134         int tmpid = -1;
1135         int tmppos = -1;
1136
1137         buffer_->texrow().getIdFromRow(row, tmpid, tmppos);
1138
1139         if (tmpid == -1)
1140                 buffer_->text().setCursor(cursor_, 0, 0);
1141         else
1142                 buffer_->text().setCursor(cursor_, buffer_->getParFromID(tmpid).pit(), tmppos);
1143 }
1144
1145
1146 void BufferView::gotoLabel(string const & label)
1147 {
1148         for (InsetIterator it = inset_iterator_begin(buffer_->inset()); it; ++it) {
1149                 vector<string> labels;
1150                 it->getLabelList(*buffer_, labels);
1151                 if (find(labels.begin(),labels.end(),label) != labels.end()) {
1152                         setCursor(it);
1153                         update();
1154                         return;
1155                 }
1156         }
1157 }
1158
1159
1160 LyXText * BufferView::getLyXText()
1161 {
1162         LyXText * text = cursor_.innerText();
1163         BOOST_ASSERT(text);
1164         return text;
1165 }
1166
1167
1168 LyXText const * BufferView::getLyXText() const
1169 {
1170         LyXText const * text = cursor_.innerText();
1171         BOOST_ASSERT(text);
1172         return text;
1173 }
1174
1175
1176 int BufferView::workHeight() const
1177 {
1178         return height_;
1179 }
1180
1181
1182 void BufferView::setCursor(DocIterator const & dit)
1183 {
1184         size_t const n = dit.depth();
1185         for (size_t i = 0; i < n; ++i)
1186                 dit[i].inset().edit(cursor_, true);
1187
1188         cursor_.setCursor(dit);
1189         cursor_.selection() = false;
1190 }
1191
1192
1193 void BufferView::mouseSetCursor(LCursor & cur)
1194 {
1195         BOOST_ASSERT(&cur.bv() == this);
1196
1197         // Has the cursor just left the inset?
1198         bool badcursor = false;
1199         if (&cursor_.inset() != &cur.inset())
1200                 badcursor = cursor_.inset().notifyCursorLeaves(cursor_);
1201
1202         // do the dEPM magic if needed
1203         // FIXME: move this to InsetText::notifyCursorLeaves?
1204         if (!badcursor && cursor_.inTexted())
1205                 cursor_.text()->deleteEmptyParagraphMechanism(cur, cursor_);
1206
1207         cursor_ = cur;
1208         cursor_.clearSelection();
1209         cursor_.setTargetX();
1210         finishUndo();
1211
1212 }
1213
1214
1215 void BufferView::putSelectionAt(DocIterator const & cur,
1216                                 int length, bool backwards)
1217 {
1218         cursor_.clearSelection();
1219
1220         setCursor(cur);
1221
1222         if (length) {
1223                 if (backwards) {
1224                         cursor_.pos() += length;
1225                         cursor_.setSelection(cursor_, -length);
1226                 } else
1227                         cursor_.setSelection(cursor_, length);
1228         }
1229 }
1230
1231
1232 LCursor & BufferView::cursor()
1233 {
1234         return cursor_;
1235 }
1236
1237
1238 LCursor const & BufferView::cursor() const
1239 {
1240         return cursor_;
1241 }
1242
1243
1244 lyx::pit_type BufferView::anchor_ref() const
1245 {
1246         return anchor_ref_;
1247 }
1248
1249
1250 ViewMetricsInfo const & BufferView::viewMetricsInfo()
1251 {
1252         return metrics_info_;
1253 }
1254
1255
1256 void BufferView::updateMetrics(bool singlepar)
1257 {
1258         // Remove old position cache
1259         theCoords.clear();
1260         LyXText & buftext = buffer_->text();
1261         lyx::pit_type size = int(buftext.paragraphs().size());
1262
1263         if (anchor_ref_ > int(buftext.paragraphs().size() - 1)) {
1264                 anchor_ref_ = int(buftext.paragraphs().size() - 1);
1265                 offset_ref_ = 0;
1266         }
1267
1268         lyx::pit_type const pit = anchor_ref_;
1269         int pit1 = pit;
1270         int pit2 = pit;
1271         size_t const npit = buftext.paragraphs().size();
1272
1273         // Rebreak anchor paragraph. In Single Paragraph mode, rebreak only
1274         // the (main text, not inset!) paragraph containing the cursor.
1275         // (if this paragraph contains insets etc., rebreaking will
1276         // recursively descend)
1277         if (!singlepar || pit == cursor_.bottom().pit())
1278                 buftext.redoParagraph(pit);
1279         int y0 = buftext.getPar(pit).ascent() - offset_ref_;
1280
1281         // Redo paragraphs above anchor if necessary; again, in Single Par
1282         // mode, only if we encounter the (main text) one having the cursor.
1283         int y1 = y0;
1284         while (y1 > 0 && pit1 > 0) {
1285                 y1 -= buftext.getPar(pit1).ascent();
1286                 --pit1;
1287                 if (!singlepar || pit1 == cursor_.bottom().pit())
1288                         buftext.redoParagraph(pit1);
1289                 y1 -= buftext.getPar(pit1).descent();
1290         }
1291
1292
1293         // Take care of ascent of first line
1294         y1 -= buftext.getPar(pit1).ascent();
1295
1296         // Normalize anchor for next time
1297         anchor_ref_ = pit1;
1298         offset_ref_ = -y1;
1299
1300         // Grey at the beginning is ugly
1301         if (pit1 == 0 && y1 > 0) {
1302                 y0 -= y1;
1303                 y1 = 0;
1304                 anchor_ref_ = 0;
1305         }
1306
1307         // Redo paragraphs below the anchor if necessary. Single par mode:
1308         // only the one containing the cursor if encountered.
1309         int y2 = y0;
1310         while (y2 < height_ && pit2 < int(npit) - 1) {
1311                 y2 += buftext.getPar(pit2).descent();
1312                 ++pit2;
1313                 if (!singlepar || pit2 == cursor_.bottom().pit())
1314                         buftext.redoParagraph(pit2);
1315                 y2 += buftext.getPar(pit2).ascent();
1316         }
1317
1318         // Take care of descent of last line
1319         y2 += buftext.getPar(pit2).descent();
1320
1321         // The coordinates of all these paragraphs are correct, cache them
1322         int y = y1;
1323         CoordCache::InnerParPosCache & parPos = theCoords.parPos()[&buftext];
1324         for (lyx::pit_type pit = pit1; pit <= pit2; ++pit) {
1325                 Paragraph const & par = buftext.getPar(pit);
1326                 y += par.ascent();
1327                 parPos[pit] = Point(0, y);
1328                 if (singlepar && pit == cursor_.bottom().pit()) {
1329                         // In Single Paragraph mode, collect here the
1330                         // y1 and y2 of the (one) paragraph the cursor is in
1331                         y1 = y - par.ascent();
1332                         y2 = y + par.descent();
1333                 }
1334                 y += par.descent();
1335         }
1336
1337         if (singlepar) {
1338                 // collect cursor paragraph iter bounds
1339                 pit1 = cursor_.bottom().pit();
1340                 pit2 = cursor_.bottom().pit();
1341         }
1342
1343         lyxerr[Debug::DEBUG]
1344                 << BOOST_CURRENT_FUNCTION
1345                 << " y1: " << y1
1346                 << " y2: " << y2
1347                 << " pit1: " << pit1
1348                 << " pit2: " << pit2
1349                 << " npit: " << npit
1350                 << " singlepar: " << singlepar
1351                 << "size: " << size
1352                 << endl;
1353
1354         metrics_info_ = ViewMetricsInfo(pit1, pit2, y1, y2, singlepar, size);
1355 }
1356
1357
1358 void BufferView::menuInsertLyXFile(string const & filenm)
1359 {
1360         BOOST_ASSERT(cursor_.inTexted());
1361         string filename = filenm;
1362
1363         if (filename.empty()) {
1364                 // Launch a file browser
1365                 string initpath = lyxrc.document_path;
1366
1367                 if (buffer_) {
1368                         string const trypath = buffer_->filePath();
1369                         // If directory is writeable, use this as default.
1370                         if (isDirWriteable(trypath))
1371                                 initpath = trypath;
1372                 }
1373
1374                 FileDialog fileDlg(lyx::to_utf8(_("Select LyX document to insert")),
1375                         LFUN_FILE_INSERT,
1376                         make_pair(string(lyx::to_utf8(_("Documents|#o#O"))),
1377                                   string(lyxrc.document_path)),
1378                         make_pair(string(lyx::to_utf8(_("Examples|#E#e"))),
1379                                   string(addPath(package().system_support(), "examples"))));
1380
1381                 FileDialog::Result result =
1382                         fileDlg.open(initpath,
1383                                      FileFilterList(lyx::to_utf8(_("LyX Documents (*.lyx)"))),
1384                                      string());
1385
1386                 if (result.first == FileDialog::Later)
1387                         return;
1388
1389                 filename = result.second;
1390
1391                 // check selected filename
1392                 if (filename.empty()) {
1393                         // emit message signal.
1394                         message(_("Canceled."));
1395                         return;
1396                 }
1397         }
1398
1399         // Get absolute path of file and add ".lyx"
1400         // to the filename if necessary
1401         filename = fileSearch(string(), filename, "lyx");
1402
1403         docstring const disp_fn = makeDisplayPath(filename);
1404         // emit message signal.
1405         message(bformat(_("Inserting document %1$s..."), disp_fn));
1406
1407         docstring res;
1408         Buffer buf("", false);
1409         if (::loadLyXFile(&buf, makeAbsPath(filename))) {
1410                 ErrorList & el = buffer_->errorList("Parse");
1411                 // Copy the inserted document error list into the current buffer one.
1412                 el = buf.errorList("Parse");
1413                 lyx::cap::pasteParagraphList(cursor_, buf.paragraphs(),
1414                                              buf.params().textclass, el);
1415                 res = _("Document %1$s inserted.");
1416         } else
1417                 res = _("Could not insert document %1$s");
1418
1419         // emit message signal.
1420         message(bformat(res, disp_fn));
1421         buffer_->errors("Parse");
1422         resize();
1423 }
1424
1425
1426 void BufferView::trackChanges()
1427 {
1428         bool const tracking = buffer_->params().tracking_changes;
1429
1430         if (!tracking) {
1431                 for_each(buffer_->par_iterator_begin(),
1432                          buffer_->par_iterator_end(),
1433                          bind(&Paragraph::trackChanges, _1, Change::UNCHANGED));
1434                 buffer_->params().tracking_changes = true;
1435
1436                 // We cannot allow undos beyond the freeze point
1437                 buffer_->undostack().clear();
1438         } else {
1439                 cursor_.setCursor(doc_iterator_begin(buffer_->inset()));
1440                 if (lyx::find::findNextChange(this)) {
1441                         showDialog("changes");
1442                         return;
1443                 }
1444
1445                 for_each(buffer_->par_iterator_begin(),
1446                          buffer_->par_iterator_end(),
1447                          mem_fun_ref(&Paragraph::untrackChanges));
1448
1449                 buffer_->params().tracking_changes = false;
1450         }
1451
1452         buffer_->redostack().clear();
1453 }