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 "bufferlist.h"
  22 #include "bufferparams.h"
  23 #include "coordcache.h"
  24 #include "CutAndPaste.h"
  25 #include "debug.h"
  26 #include "dispatchresult.h"
  27 #include "errorlist.h"
  28 #include "factory.h"
  29 #include "FloatList.h"
  30 #include "funcrequest.h"
  31 #include "FuncStatus.h"
  32 #include "gettext.h"
  33 #include "intl.h"
  34 #include "insetiterator.h"
  35 #include "language.h"
  36 #include "LaTeXFeatures.h"
  37 #include "lyx_cb.h" // added for Dispatch functions
  38 #include "lyx_main.h"
  39 #include "lyxfind.h"
  40 #include "lyxfunc.h"
  41 #include "lyxlayout.h"
  42 #include "lyxtext.h"
  43 #include "lyxtextclass.h"
  44 #include "lyxrc.h"
  45 #include "session.h"
  46 #include "paragraph.h"
  47 #include "paragraph_funcs.h"
  48 #include "ParagraphParameters.h"
  49 #include "pariterator.h"
  50 #include "texrow.h"
  51 #include "toc.h"
  52 #include "undo.h"
  53 #include "vspace.h"
  54 #include "WordLangTuple.h"
  55 #include "metricsinfo.h"
  56
  57 #include "insets/insetbibtex.h"
  58 #include "insets/insetcommand.h" // ChangeRefs
  59 #include "insets/insetref.h"
  60 #include "insets/insettext.h"
  61
  62 #include "frontends/Alert.h"
  63 #include "frontends/Clipboard.h"
  64 #include "frontends/Dialogs.h"
  65 #include "frontends/FileDialog.h"
  66 #include "frontends/font_metrics.h"
  67 #include "frontends/Gui.h"
  68 #include "frontends/LyXView.h"
  69 #include "frontends/Selection.h"
  70
  71 #include "graphics/Previews.h"
  72
  73 #include "support/convert.h"
  74 #include "support/filefilterlist.h"
  75 #include "support/filetools.h"
  76 #include "support/package.h"
  77 #include "support/types.h"
  78
  79 #include <boost/bind.hpp>
  80 #include <boost/current_function.hpp>
  81
  82 #include <functional>
  83 #include <vector>
  84
  85
  86 using lyx::frontend::Clipboard;
  87 using lyx::frontend::Gui;
  88
  89 using lyx::docstring;
  90 using lyx::pos_type;
  91
  92 using lyx::support::addPath;
  93 using lyx::support::bformat;
  94 using lyx::support::FileFilterList;
  95 using lyx::support::fileSearch;
  96 using lyx::support::isDirWriteable;
  97 using lyx::support::makeDisplayPath;
  98 using lyx::support::makeAbsPath;
  99 using lyx::support::package;
 100
 101 using std::distance;
 102 using std::endl;
 103 using std::istringstream;
 104 using std::find;
 105 using std::make_pair;
 106 using std::min;
 107 using std::max;
 108 using std::mem_fun_ref;
 109 using std::string;
 110 using std::vector;
 111
 112 extern BufferList bufferlist;
 113
 114
 115 namespace {
 116
 117 unsigned int const saved_positions_num = 20;
 118
 119
 120 /// Return an inset of this class if it exists at the current cursor position
 121 template <class T>
 122 T * getInsetByCode(LCursor & cur, InsetBase::Code code)
 123 {
 124         T * inset = 0;
 125         DocIterator it = cur;
 126         if (it.nextInset() &&
 127             it.nextInset()->lyxCode() == code) {
 128                 inset = static_cast<T*>(it.nextInset());
 129         }
 130         return inset;
 131 }
 132
 133 } // anon namespace
 134
 135
 136 BufferView::BufferView(LyXView * owner)
 137         : owner_(owner), buffer_(0), wh_(0),
 138           cursor_(*this),
 139           multiparsel_cache_(false), anchor_ref_(0), offset_ref_(0),
 140           intl_(new Intl)
 141 {
 142         xsel_cache_.set = false;
 143
 144         saved_positions.resize(saved_positions_num);
 145         // load saved bookmarks
 146         lyx::Session::BookmarkList & bmList = LyX::ref().session().loadBookmarks();
 147         for (lyx::Session::BookmarkList::iterator bm = bmList.begin();
 148                 bm != bmList.end(); ++bm)
 149                 if (bm->get<0>() < saved_positions_num)
 150                         saved_positions[bm->get<0>()] = Position( bm->get<1>(), bm->get<2>(), bm->get<3>() );
 151         // and then clear them
 152         bmList.clear();
 153
 154         intl_->initKeyMapper(lyxrc.use_kbmap);
 155 }
 156
 157
 158 BufferView::~BufferView()
 159 {
 160 }
 161
 162
 163 Buffer * BufferView::buffer() const
 164 {
 165         return buffer_;
 166 }
 167
 168
 169 LyXView * BufferView::owner() const
 170 {
 171         return owner_;
 172 }
 173
 174
 175 void BufferView::setBuffer(Buffer * b)
 176 {
 177         lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 178                             << "[ b = " << b << "]" << endl;
 179
 180         if (buffer_) {
 181                 // Save the actual cursor position and anchor inside the
 182                 // buffer so that it can be restored in case we rechange
 183                 // to this buffer later on.
 184                 buffer_->saveCursor(cursor_.selectionBegin(),
 185                                     cursor_.selectionEnd());
 186                 // current buffer is going to be switched-off, save cursor pos
 187                 LyX::ref().session().saveFilePosition(buffer_->fileName(),
 188                         boost::tie(cursor_.pit(), cursor_.pos()) );
 189         }
 190
 191         // If we're quitting lyx, don't bother updating stuff
 192         if (quitting) {
 193                 buffer_ = 0;
 194                 return;
 195         }
 196
 197         // If we are closing current buffer, switch to the first in
 198         // buffer list.
 199         if (!b) {
 200                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 201                                     << " No Buffer!" << endl;
 202                 // We are closing the buffer, use the first buffer as current
 203                 buffer_ = bufferlist.first();
 204         } else {
 205                 // Set current buffer
 206                 buffer_ = b;
 207         }
 208
 209         // Reset old cursor
 210         cursor_ = LCursor(*this);
 211         anchor_ref_ = 0;
 212         offset_ref_ = 0;
 213
 214         if (buffer_) {
 215                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 216                                     << "Buffer addr: " << buffer_ << endl;
 217                 cursor_.push(buffer_->inset());
 218                 cursor_.resetAnchor();
 219                 buffer_->text().init(this);
 220                 buffer_->text().setCurrentFont(cursor_);
 221                 if (buffer_->getCursor().size() > 0 &&
 222                     buffer_->getAnchor().size() > 0)
 223                 {
 224                         cursor_.setCursor(buffer_->getAnchor().asDocIterator(&(buffer_->inset())));
 225                         cursor_.resetAnchor();
 226                         cursor_.setCursor(buffer_->getCursor().asDocIterator(&(buffer_->inset())));
 227                         cursor_.setSelection();
 228                 }
 229         }
 230
 231         update();
 232
 233         if (buffer_ && lyx::graphics::Previews::status() != LyXRC::PREVIEW_OFF)
 234                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 235 }
 236
 237
 238 bool BufferView::loadLyXFile(string const & filename, bool tolastfiles)
 239 {
 240         // Get absolute path of file and add ".lyx"
 241         // to the filename if necessary
 242         string s = fileSearch(string(), filename, "lyx");
 243
 244         bool const found = !s.empty();
 245
 246         if (!found)
 247                 s = filename;
 248
 249         // File already open?
 250         if (bufferlist.exists(s)) {
 251                 docstring const file = makeDisplayPath(s, 20);
 252                 docstring text = bformat(_("The document %1$s is already "
 253                                                      "loaded.\n\nDo you want to revert "
 254                                                      "to the saved version?"), file);
 255                 int const ret = Alert::prompt(_("Revert to saved document?"),
 256                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 257
 258                 if (ret != 0) {
 259                         setBuffer(bufferlist.getBuffer(s));
 260                         return true;
 261                 }
 262                 // FIXME: should be LFUN_REVERT
 263                 if (!bufferlist.close(bufferlist.getBuffer(s), false))
 264                         return false;
 265                 // Fall through to new load. (Asger)
 266         }
 267
 268         Buffer * b = 0;
 269
 270         if (found) {
 271                 b = bufferlist.newBuffer(s);
 272                 if (!::loadLyXFile(b, s)) {
 273                         bufferlist.release(b);
 274                         return false;
 275                 }
 276         } else {
 277                 docstring text = bformat(_("The document %1$s does not yet "
 278                                                      "exist.\n\nDo you want to create "
 279                                                      "a new document?"), lyx::from_utf8(s));
 280                 int const ret = Alert::prompt(_("Create new document?"),
 281                          text, 0, 1, _("&Create"), _("Cancel"));
 282
 283                 if (ret == 0) {
 284                         b = newFile(s, string(), true);
 285                         if (!b)
 286                                 return false;
 287                 } else
 288                         return false;
 289         }
 290
 291         setBuffer(b);
 292         // Send the "errors" signal in case of parsing errors
 293         b->errors("Parse");
 294
 295         // scroll to the position when the file was last closed
 296         if (lyxrc.use_lastfilepos) {
 297                 lyx::pit_type pit;
 298                 lyx::pos_type pos;
 299                 boost::tie(pit, pos) = LyX::ref().session().loadFilePosition(s);
 300                 // I am not sure how to separate the following part to a function
 301                 // so I will leave this to Lars.
 302                 //
 303                 // check pit since the document may be externally changed.
 304                 if ( static_cast<size_t>(pit) < b->paragraphs().size() ) {
 305                         ParIterator it = b->par_iterator_begin();
 306                         ParIterator const end = b->par_iterator_end();
 307                         for (; it != end; ++it)
 308                                 if (it.pit() == pit) {
 309                                         // restored pos may be bigger than it->size
 310                                         setCursor(makeDocIterator(it, min(pos, it->size())));
 311                                         update(Update::FitCursor);
 312                                         break;
 313                                 }
 314                 }
 315         }
 316
 317         if (tolastfiles)
 318                 LyX::ref().session().addLastFile(b->fileName());
 319
 320         return true;
 321 }
 322
 323
 324 void BufferView::reload()
 325 {
 326         string const fn = buffer_->fileName();
 327         if (bufferlist.close(buffer_, false))
 328                 loadLyXFile(fn);
 329 }
 330
 331
 332 void BufferView::resize()
 333 {
 334         if (!buffer_)
 335                 return;
 336
 337         lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION << endl;
 338
 339         buffer_->text().init(this);
 340         update();
 341         switchKeyMap();
 342 }
 343
 344
 345 bool BufferView::fitCursor()
 346 {
 347         if (bv_funcs::status(this, cursor_) == bv_funcs::CUR_INSIDE) {
 348                 LyXFont const font = cursor_.getFont();
 349                 int const asc = font_metrics::maxAscent(font);
 350                 int const des = font_metrics::maxDescent(font);
 351                 Point const p = bv_funcs::getPos(cursor_, cursor_.boundary());
 352                 if (p.y_ - asc >= 0 && p.y_ + des < height_)
 353                         return false;
 354         }
 355         center();
 356         return true;
 357 }
 358
 359
 360 bool BufferView::multiParSel()
 361 {
 362         if (!cursor_.selection())
 363                 return false;
 364         bool ret = multiparsel_cache_;
 365         multiparsel_cache_ = cursor_.selBegin().pit() != cursor_.selEnd().pit();
 366         // Either this, or previous selection spans paragraphs
 367         return ret || multiparsel_cache_;
 368 }
 369
 370
 371 bool BufferView::update(Update::flags flags)
 372 {
 373         // This is close to a hot-path.
 374         if (lyxerr.debugging(Debug::DEBUG)) {
 375                 lyxerr[Debug::DEBUG]
 376                         << BOOST_CURRENT_FUNCTION
 377                         << "[fitcursor = " << (flags & Update::FitCursor)
 378                         << ", forceupdate = " << (flags & Update::Force)
 379                         << ", singlepar = " << (flags & Update::SinglePar)
 380                         << "]  buffer: " << buffer_ << endl;
 381         }
 382
 383         // Check needed to survive LyX startup
 384         if (!buffer_)
 385                 return false;
 386
 387         // Update macro store
 388         buffer_->buildMacros();
 389
 390         // First drawing step
 391         updateMetrics(flags & Update::SinglePar);
 392
 393         // The second drawing step is done in WorkArea::redraw() if needed.
 394         bool const need_second_step =
 395                 (flags & (Update::Force | Update::FitCursor | Update::MultiParSel))
 396                 && (fitCursor() || multiParSel());
 397
 398         return need_second_step;
 399 }
 400
 401
 402 void BufferView::updateScrollbar()
 403 {
 404         if (!buffer_) {
 405                 lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION
 406                                      << " no text in updateScrollbar" << endl;
 407                 scrollbarParameters_.reset();
 408                 return;
 409         }
 410
 411         LyXText & t = buffer_->text();
 412         int const parsize = int(t.paragraphs().size() - 1);
 413         if (anchor_ref_ >  parsize)  {
 414                 anchor_ref_ = parsize;
 415                 offset_ref_ = 0;
 416         }
 417
 418         lyxerr[Debug::GUI]
 419                 << BOOST_CURRENT_FUNCTION
 420                 << " Updating scrollbar: height: " << t.paragraphs().size()
 421                 << " curr par: " << cursor_.bottom().pit()
 422                 << " default height " << defaultRowHeight() << endl;
 423
 424         // It would be better to fix the scrollbar to understand
 425         // values in [0..1] and divide everything by wh
 426
 427         // estimated average paragraph height:
 428         if (wh_ == 0)
 429                 wh_ = height_ / 4;
 430         int h = t.getPar(anchor_ref_).height();
 431
 432         // Normalize anchor/offset (MV):
 433         while (offset_ref_ > h && anchor_ref_ < parsize) {
 434                 anchor_ref_++;
 435                 offset_ref_ -= h;
 436                 h = t.getPar(anchor_ref_).height();
 437         }
 438         // Look at paragraph heights on-screen
 439         int sumh = 0;
 440         int nh = 0;
 441         for (lyx::pit_type pit = anchor_ref_; pit <= parsize; ++pit) {
 442                 if (sumh > height_)
 443                         break;
 444                 int const h2 = t.getPar(pit).height();
 445                 sumh += h2;
 446                 nh++;
 447         }
 448         int const hav = sumh / nh;
 449         // More realistic average paragraph height
 450         if (hav > wh_)
 451                 wh_ = hav;
 452
 453         scrollbarParameters_.height = (parsize + 1) * wh_;
 454         scrollbarParameters_.position = anchor_ref_ * wh_ + int(offset_ref_ * wh_ / float(h));
 455         scrollbarParameters_.lineScrollHeight = int(wh_ * defaultRowHeight() / float(h));
 456 }
 457
 458
 459 ScrollbarParameters const & BufferView::scrollbarParameters() const
 460 {
 461         return scrollbarParameters_;
 462 }
 463
 464
 465 void BufferView::scrollDocView(int value)
 466 {
 467         lyxerr[Debug::GUI] << BOOST_CURRENT_FUNCTION
 468                            << "[ value = " << value << "]" << endl;
 469
 470         if (!buffer_)
 471                 return;
 472
 473         LyXText & t = buffer_->text();
 474
 475         float const bar = value / float(wh_ * t.paragraphs().size());
 476
 477         anchor_ref_ = int(bar * t.paragraphs().size());
 478         if (anchor_ref_ >  int(t.paragraphs().size()) - 1)
 479                 anchor_ref_ = int(t.paragraphs().size()) - 1;
 480         t.redoParagraph(anchor_ref_);
 481         int const h = t.getPar(anchor_ref_).height();
 482         offset_ref_ = int((bar * t.paragraphs().size() - anchor_ref_) * h);
 483 }
 484
 485
 486 void BufferView::setCursorFromScrollbar()
 487 {
 488         LyXText & t = buffer_->text();
 489
 490         int const height = 2 * defaultRowHeight();
 491         int const first = height;
 492         int const last = height_ - height;
 493         LCursor & cur = cursor_;
 494
 495         bv_funcs::CurStatus st = bv_funcs::status(this, cur);
 496
 497         switch (st) {
 498         case bv_funcs::CUR_ABOVE:
 499                 t.setCursorFromCoordinates(cur, 0, first);
 500                 cur.clearSelection();
 501                 break;
 502         case bv_funcs::CUR_BELOW:
 503                 t.setCursorFromCoordinates(cur, 0, last);
 504                 cur.clearSelection();
 505                 break;
 506         case bv_funcs::CUR_INSIDE:
 507                 int const y = bv_funcs::getPos(cur, cur.boundary()).y_;
 508                 int const newy = min(last, max(y, first));
 509                 if (y != newy) {
 510                         cur.reset(buffer_->inset());
 511                         t.setCursorFromCoordinates(cur, 0, newy);
 512                 }
 513         }
 514 }
 515
 516
 517 Change const BufferView::getCurrentChange()
 518 {
 519         if (!buffer_->params().tracking_changes || !cursor_.selection())
 520                 return Change(Change::UNCHANGED);
 521
 522         DocIterator dit = cursor_.selectionBegin();
 523         return dit.paragraph().lookupChange(dit.pos());
 524 }
 525
 526
 527 void BufferView::savePosition(unsigned int i)
 528 {
 529         if (i >= saved_positions_num)
 530                 return;
 531         BOOST_ASSERT(cursor_.inTexted());
 532         saved_positions[i] = Position(buffer_->fileName(),
 533                                       cursor_.paragraph().id(),
 534                                       cursor_.pos());
 535         if (i > 0)
 536                 // emit message signal.
 537                 message(bformat(_("Saved bookmark %1$d"), i));
 538 }
 539
 540
 541 void BufferView::restorePosition(unsigned int i)
 542 {
 543         if (i >= saved_positions_num)
 544                 return;
 545
 546         string const fname = saved_positions[i].filename;
 547
 548         cursor_.clearSelection();
 549
 550         if (fname != buffer_->fileName()) {
 551                 Buffer * b = 0;
 552                 if (bufferlist.exists(fname))
 553                         b = bufferlist.getBuffer(fname);
 554                 else {
 555                         b = bufferlist.newBuffer(fname);
 556                         // Don't ask, just load it
 557                         ::loadLyXFile(b, fname);
 558                 }
 559                 if (b)
 560                         setBuffer(b);
 561         }
 562
 563         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 564         if (par == buffer_->par_iterator_end())
 565                 return;
 566
 567         setCursor(makeDocIterator(par, min(par->size(), saved_positions[i].par_pos)));
 568
 569         if (i > 0)
 570                 // emit message signal.
 571                 message(bformat(_("Moved to bookmark %1$d"), i));
 572 }
 573
 574
 575 bool BufferView::isSavedPosition(unsigned int i)
 576 {
 577         return i < saved_positions_num && !saved_positions[i].filename.empty();
 578 }
 579
 580 void BufferView::saveSavedPositions()
 581 {
 582         // save bookmarks. It is better to use the pit interface
 583         // but I do not know how to effectively convert between
 584         // par_id and pit.
 585         for (unsigned int i=1; i < saved_positions_num; ++i) {
 586                 if ( isSavedPosition(i) )
 587                         LyX::ref().session().saveBookmark( boost::tie(
 588                                 i,
 589                                 saved_positions[i].filename,
 590                                 saved_positions[i].par_id,
 591                                 saved_positions[i].par_pos) );
 592         }
 593 }
 594
 595 void BufferView::switchKeyMap()
 596 {
 597         if (!lyxrc.rtl_support)
 598                 return;
 599
 600         if (getLyXText()->real_current_font.isRightToLeft()) {
 601                 if (intl_->keymap == Intl::PRIMARY)
 602                         intl_->keyMapSec();
 603         } else {
 604                 if (intl_->keymap == Intl::SECONDARY)
 605                         intl_->keyMapPrim();
 606         }
 607 }
 608
 609
 610 int BufferView::workWidth() const
 611 {
 612         return width_;
 613 }
 614
 615
 616 void BufferView::center()
 617 {
 618         CursorSlice & bot = cursor_.bottom();
 619         lyx::pit_type const pit = bot.pit();
 620         bot.text()->redoParagraph(pit);
 621         Paragraph const & par = bot.text()->paragraphs()[pit];
 622         anchor_ref_ = pit;
 623         offset_ref_ = bv_funcs::coordOffset(cursor_, cursor_.boundary()).y_
 624                 + par.ascent() - height_ / 2;
 625 }
 626
 627
 628 FuncStatus BufferView::getStatus(FuncRequest const & cmd)
 629 {
 630         FuncStatus flag;
 631
 632         switch (cmd.action) {
 633
 634         case LFUN_UNDO:
 635                 flag.enabled(!buffer_->undostack().empty());
 636                 break;
 637         case LFUN_REDO:
 638                 flag.enabled(!buffer_->redostack().empty());
 639                 break;
 640         case LFUN_FILE_INSERT:
 641         case LFUN_FILE_INSERT_ASCII_PARA:
 642         case LFUN_FILE_INSERT_ASCII:
 643         case LFUN_BOOKMARK_SAVE:
 644                 // FIXME: Actually, these LFUNS should be moved to LyXText
 645                 flag.enabled(cursor_.inTexted());
 646                 break;
 647         case LFUN_FONT_STATE:
 648         case LFUN_LABEL_INSERT:
 649         case LFUN_PARAGRAPH_GOTO:
 650         // FIXME handle non-trivially
 651         case LFUN_OUTLINE_UP:
 652         case LFUN_OUTLINE_DOWN:
 653         case LFUN_OUTLINE_IN:
 654         case LFUN_OUTLINE_OUT:
 655         case LFUN_NOTE_NEXT:
 656         case LFUN_REFERENCE_NEXT:
 657         case LFUN_WORD_FIND:
 658         case LFUN_WORD_REPLACE:
 659         case LFUN_MARK_OFF:
 660         case LFUN_MARK_ON:
 661         case LFUN_MARK_TOGGLE:
 662         case LFUN_SCREEN_RECENTER:
 663         case LFUN_BIBTEX_DATABASE_ADD:
 664         case LFUN_BIBTEX_DATABASE_DEL:
 665         case LFUN_WORDS_COUNT:
 666         case LFUN_NEXT_INSET_TOGGLE:
 667                 flag.enabled(true);
 668                 break;
 669
 670         case LFUN_LABEL_GOTO: {
 671                 flag.enabled(!cmd.argument().empty()
 672                     || getInsetByCode<InsetRef>(cursor_, InsetBase::REF_CODE));
 673                 break;
 674         }
 675
 676         case LFUN_BOOKMARK_GOTO:
 677                 flag.enabled(isSavedPosition(convert<unsigned int>(lyx::to_utf8(cmd.argument()))));
 678                 break;
 679         case LFUN_CHANGES_TRACK:
 680                 flag.enabled(true);
 681                 flag.setOnOff(buffer_->params().tracking_changes);
 682                 break;
 683
 684         case LFUN_CHANGES_OUTPUT: {
 685                 OutputParams runparams;
 686                 LaTeXFeatures features(*buffer_, buffer_->params(), runparams);
 687                 flag.enabled(buffer_ && buffer_->params().tracking_changes
 688                         && features.isAvailable("dvipost"));
 689                 flag.setOnOff(buffer_->params().output_changes);
 690                 break;
 691         }
 692
 693         case LFUN_CHANGES_MERGE:
 694         case LFUN_CHANGE_ACCEPT: // what about these two
 695         case LFUN_CHANGE_REJECT: // what about these two
 696         case LFUN_ALL_CHANGES_ACCEPT:
 697         case LFUN_ALL_CHANGES_REJECT:
 698                 flag.enabled(buffer_ && buffer_->params().tracking_changes);
 699                 break;
 700
 701         case LFUN_BUFFER_TOGGLE_COMPRESSION: {
 702                 flag.setOnOff(buffer_->params().compressed);
 703                 break;
 704         }
 705
 706         default:
 707                 flag.enabled(false);
 708         }
 709
 710         return flag;
 711 }
 712
 713
 714 bool BufferView::dispatch(FuncRequest const & cmd)
 715 {
 716         //lyxerr << BOOST_CURRENT_FUNCTION
 717         //       << [ cmd = " << cmd << "]" << endl;
 718
 719         // Make sure that the cached BufferView is correct.
 720         lyxerr[Debug::ACTION] << BOOST_CURRENT_FUNCTION
 721                 << " action[" << cmd.action << ']'
 722                 << " arg[" << lyx::to_utf8(cmd.argument()) << ']'
 723                 << " x[" << cmd.x << ']'
 724                 << " y[" << cmd.y << ']'
 725                 << " button[" << cmd.button() << ']'
 726                 << endl;
 727
 728         LCursor & cur = cursor_;
 729
 730         switch (cmd.action) {
 731
 732         case LFUN_UNDO:
 733                 if (buffer_) {
 734                         cur.message(_("Undo"));
 735                         cur.clearSelection();
 736                         if (!textUndo(*this))
 737                                 cur.message(_("No further undo information"));
 738                         update();
 739                         switchKeyMap();
 740                 }
 741                 break;
 742
 743         case LFUN_REDO:
 744                 if (buffer_) {
 745                         cur.message(_("Redo"));
 746                         cur.clearSelection();
 747                         if (!textRedo(*this))
 748                                 cur.message(_("No further redo information"));
 749                         update();
 750                         switchKeyMap();
 751                 }
 752                 break;
 753
 754         case LFUN_FILE_INSERT:
 755                 // FIXME: We don't know the encoding of filenames
 756                 menuInsertLyXFile(lyx::to_utf8(cmd.argument()));
 757                 break;
 758
 759         case LFUN_FILE_INSERT_ASCII_PARA:
 760                 // FIXME: We don't know the encoding of filenames
 761                 insertAsciiFile(this, lyx::to_utf8(cmd.argument()), true);
 762                 break;
 763
 764         case LFUN_FILE_INSERT_ASCII:
 765                 // FIXME: We don't know the encoding of filenames
 766                 insertAsciiFile(this, lyx::to_utf8(cmd.argument()), false);
 767                 break;
 768
 769         case LFUN_FONT_STATE:
 770                 cur.message(lyx::from_utf8(cur.currentState()));
 771                 break;
 772
 773         case LFUN_BOOKMARK_SAVE:
 774                 savePosition(convert<unsigned int>(lyx::to_utf8(cmd.argument())));
 775                 break;
 776
 777         case LFUN_BOOKMARK_GOTO:
 778                 restorePosition(convert<unsigned int>(lyx::to_utf8(cmd.argument())));
 779                 break;
 780
 781         case LFUN_LABEL_GOTO: {
 782                 string label = lyx::to_utf8(cmd.argument());
 783                 if (label.empty()) {
 784                         InsetRef * inset =
 785                                 getInsetByCode<InsetRef>(cursor_,
 786                                                          InsetBase::REF_CODE);
 787                         if (inset) {
 788                                 label = inset->getContents();
 789                                 savePosition(0);
 790                         }
 791                 }
 792
 793                 if (!label.empty())
 794                         gotoLabel(label);
 795                 break;
 796         }
 797
 798         case LFUN_PARAGRAPH_GOTO: {
 799                 int const id = convert<int>(lyx::to_utf8(cmd.argument()));
 800                 ParIterator par = buffer_->getParFromID(id);
 801                 if (par == buffer_->par_iterator_end()) {
 802                         lyxerr[Debug::INFO] << "No matching paragraph found! ["
 803                                             << id << ']' << endl;
 804                         break;
 805                 } else {
 806                         lyxerr[Debug::INFO] << "Paragraph " << par->id()
 807                                             << " found." << endl;
 808                 }
 809
 810                 // Set the cursor
 811                 setCursor(makeDocIterator(par, 0));
 812
 813                 update();
 814                 switchKeyMap();
 815                 break;
 816         }
 817
 818         case LFUN_OUTLINE_UP:
 819                 lyx::toc::outline(lyx::toc::Up, cursor_);
 820                 cursor_.text()->setCursor(cursor_, cursor_.pit(), 0);
 821                 updateLabels(*buffer_);
 822                 break;
 823         case LFUN_OUTLINE_DOWN:
 824                 lyx::toc::outline(lyx::toc::Down, cursor_);
 825                 cursor_.text()->setCursor(cursor_, cursor_.pit(), 0);
 826                 updateLabels(*buffer_);
 827                 break;
 828         case LFUN_OUTLINE_IN:
 829                 lyx::toc::outline(lyx::toc::In, cursor_);
 830                 updateLabels(*buffer_);
 831                 break;
 832         case LFUN_OUTLINE_OUT:
 833                 lyx::toc::outline(lyx::toc::Out, cursor_);
 834                 updateLabels(*buffer_);
 835                 break;
 836
 837         case LFUN_NOTE_NEXT:
 838                 bv_funcs::gotoInset(this, InsetBase::NOTE_CODE, false);
 839                 break;
 840
 841         case LFUN_REFERENCE_NEXT: {
 842                 vector<InsetBase_code> tmp;
 843                 tmp.push_back(InsetBase::LABEL_CODE);
 844                 tmp.push_back(InsetBase::REF_CODE);
 845                 bv_funcs::gotoInset(this, tmp, true);
 846                 break;
 847         }
 848
 849         case LFUN_CHANGES_TRACK:
 850                 trackChanges();
 851                 break;
 852
 853         case LFUN_CHANGES_OUTPUT: {
 854                 bool const state = buffer_->params().output_changes;
 855                 buffer_->params().output_changes = !state;
 856                 break;
 857         }
 858
 859         case LFUN_CHANGES_MERGE:
 860                 if (lyx::find::findNextChange(this))
 861                         owner_->getDialogs().show("changes");
 862                 break;
 863
 864         case LFUN_ALL_CHANGES_ACCEPT: {
 865                 cursor_.reset(buffer_->inset());
 866 #ifdef WITH_WARNINGS
 867 #warning FIXME changes
 868 #endif
 869                 while (lyx::find::findNextChange(this))
 870                         getLyXText()->acceptChange(cursor_);
 871                 update();
 872                 break;
 873         }
 874
 875         case LFUN_ALL_CHANGES_REJECT: {
 876                 cursor_.reset(buffer_->inset());
 877 #ifdef WITH_WARNINGS
 878 #warning FIXME changes
 879 #endif
 880                 while (lyx::find::findNextChange(this))
 881                         getLyXText()->rejectChange(cursor_);
 882                 break;
 883         }
 884
 885         case LFUN_WORD_FIND:
 886                 lyx::find::find(this, cmd);
 887                 break;
 888
 889         case LFUN_WORD_REPLACE:
 890                 lyx::find::replace(this, cmd);
 891                 break;
 892
 893         case LFUN_MARK_OFF:
 894                 cur.clearSelection();
 895                 cur.resetAnchor();
 896                 cur.message(lyx::from_utf8(N_("Mark off")));
 897                 break;
 898
 899         case LFUN_MARK_ON:
 900                 cur.clearSelection();
 901                 cur.mark() = true;
 902                 cur.resetAnchor();
 903                 cur.message(lyx::from_utf8(N_("Mark on")));
 904                 break;
 905
 906         case LFUN_MARK_TOGGLE:
 907                 cur.clearSelection();
 908                 if (cur.mark()) {
 909                         cur.mark() = false;
 910                         cur.message(lyx::from_utf8(N_("Mark removed")));
 911                 } else {
 912                         cur.mark() = true;
 913                         cur.message(lyx::from_utf8(N_("Mark set")));
 914                 }
 915                 cur.resetAnchor();
 916                 break;
 917
 918         case LFUN_SCREEN_RECENTER:
 919                 center();
 920                 break;
 921
 922         case LFUN_BIBTEX_DATABASE_ADD: {
 923                 LCursor tmpcur = cursor_;
 924                 bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
 925                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
 926                                                 InsetBase::BIBTEX_CODE);
 927                 if (inset) {
 928                         if (inset->addDatabase(lyx::to_utf8(cmd.argument())))
 929                                 buffer_->updateBibfilesCache();
 930                 }
 931                 break;
 932         }
 933
 934         case LFUN_BIBTEX_DATABASE_DEL: {
 935                 LCursor tmpcur = cursor_;
 936                 bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
 937                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
 938                                                 InsetBase::BIBTEX_CODE);
 939                 if (inset) {
 940                         if (inset->delDatabase(lyx::to_utf8(cmd.argument())))
 941                                 buffer_->updateBibfilesCache();
 942                 }
 943                 break;
 944         }
 945
 946         case LFUN_WORDS_COUNT: {
 947                 DocIterator from, to;
 948                 if (cur.selection()) {
 949                         from = cur.selectionBegin();
 950                         to = cur.selectionEnd();
 951                 } else {
 952                         from = doc_iterator_begin(buffer_->inset());
 953                         to = doc_iterator_end(buffer_->inset());
 954                 }
 955                 int const count = countWords(from, to);
 956                 docstring message;
 957                 if (count != 1) {
 958                         if (cur.selection())
 959                                 message = bformat(_("%1$d words in selection."),
 960                                           count);
 961                                 else
 962                                         message = bformat(_("%1$d words in document."),
 963                                                           count);
 964                 }
 965                 else {
 966                         if (cur.selection())
 967                                 message = _("One word in selection.");
 968                         else
 969                                 message = _("One word in document.");
 970                 }
 971
 972                 Alert::information(_("Count words"), message);
 973         }
 974                 break;
 975
 976         case LFUN_BUFFER_TOGGLE_COMPRESSION:
 977                 // turn compression on/off
 978                 buffer_->params().compressed = !buffer_->params().compressed;
 979                 break;
 980
 981         case LFUN_NEXT_INSET_TOGGLE: {
 982                 // this is the real function we want to invoke
 983                 FuncRequest tmpcmd = FuncRequest(LFUN_INSET_TOGGLE, cmd.origin);
 984                 // if there is an inset at cursor, see whether it
 985                 // wants to toggle.
 986                 InsetBase * inset = cur.nextInset();
 987                 if (inset && inset->isActive()) {
 988                         LCursor tmpcur = cur;
 989                         tmpcur.pushLeft(*inset);
 990                         inset->dispatch(tmpcur, tmpcmd);
 991                         if (tmpcur.result().dispatched()) {
 992                                 cur.dispatched();
 993                         }
 994                 }
 995                 // if it did not work, try the underlying inset.
 996                 if (!cur.result().dispatched())
 997                         cur.dispatch(tmpcmd);
 998
 999                 if (cur.result().dispatched())
1000                         cur.clearSelection();
1001
1002                 break;
1003         }
1004
1005         default:
1006                 return false;
1007         }
1008
1009         return true;
1010 }
1011
1012
1013 docstring const BufferView::requestSelection()
1014 {
1015         if (!buffer_)
1016                 return docstring();
1017
1018         LCursor & cur = cursor_;
1019
1020         if (!cur.selection()) {
1021                 xsel_cache_.set = false;
1022                 return docstring();
1023         }
1024
1025         if (!xsel_cache_.set ||
1026             cur.top() != xsel_cache_.cursor ||
1027             cur.anchor_.top() != xsel_cache_.anchor)
1028         {
1029                 xsel_cache_.cursor = cur.top();
1030                 xsel_cache_.anchor = cur.anchor_.top();
1031                 xsel_cache_.set = cur.selection();
1032                 return cur.selectionAsString(false);
1033         }
1034         return docstring();
1035 }
1036
1037
1038 void BufferView::clearSelection()
1039 {
1040         if (buffer_) {
1041                 cursor_.clearSelection();
1042                 xsel_cache_.set = false;
1043         }
1044 }
1045
1046
1047 void BufferView::workAreaResize(int width, int height)
1048 {
1049         bool const widthChange = width != width_;
1050         bool const heightChange = height != height_;
1051
1052         // Update from work area
1053         width_ = width;
1054         height_ = height;
1055
1056         if (buffer_ && widthChange) {
1057                 // The WorkArea content needs a resize
1058                 resize();
1059         }
1060
1061         if (widthChange || heightChange)
1062                 update();
1063 }
1064
1065
1066 bool BufferView::workAreaDispatch(FuncRequest const & cmd0)
1067 {
1068         //lyxerr << BOOST_CURRENT_FUNCTION << "[ cmd0 " << cmd0 << "]" << endl;
1069
1070         // This is only called for mouse related events including
1071         // LFUN_FILE_OPEN generated by drag-and-drop.
1072         FuncRequest cmd = cmd0;
1073
1074         if (!buffer_)
1075                 return false;
1076
1077         LCursor cur(*this);
1078         cur.push(buffer_->inset());
1079         cur.selection() = cursor_.selection();
1080
1081         // Doesn't go through lyxfunc, so we need to update
1082         // the layout choice etc. ourselves
1083
1084         // E.g. Qt mouse press when no buffer
1085         if (!buffer_)
1086                 return false;
1087
1088         // Either the inset under the cursor or the
1089         // surrounding LyXText will handle this event.
1090
1091         // Build temporary cursor.
1092         cmd.y = min(max(cmd.y, -1), height_);
1093         InsetBase * inset = buffer_->text().editXY(cur, cmd.x, cmd.y);
1094         //lyxerr << BOOST_CURRENT_FUNCTION
1095         //       << " * hit inset at tip: " << inset << endl;
1096         //lyxerr << BOOST_CURRENT_FUNCTION
1097         //       << " * created temp cursor:" << cur << endl;
1098
1099         // Put anchor at the same position.
1100         cur.resetAnchor();
1101
1102         // Try to dispatch to an non-editable inset near this position
1103         // via the temp cursor. If the inset wishes to change the real
1104         // cursor it has to do so explicitly by using
1105         //  cur.bv().cursor() = cur;  (or similar)
1106         if (inset)
1107                 inset->dispatch(cur, cmd);
1108
1109         // Now dispatch to the temporary cursor. If the real cursor should
1110         // be modified, the inset's dispatch has to do so explicitly.
1111         if (!cur.result().dispatched())
1112                 cur.dispatch(cmd);
1113
1114         if (cur.result().dispatched()) {
1115                 // Redraw if requested or necessary.
1116                 if (cur.result().update())
1117                         update(Update::FitCursor | Update::Force);
1118                 else
1119                         update(Update::FitCursor | Update::MultiParSel);
1120         }
1121
1122         return true;
1123 }
1124
1125
1126 void BufferView::scroll(int lines)
1127 {
1128 //      if (!buffer_)
1129 //              return;
1130 //
1131 //      LyXText const * t = &buffer_->text();
1132 //      int const line_height = defaultRowHeight();
1133 //
1134 //      // The new absolute coordinate
1135 //      int new_top_y = top_y() + lines * line_height;
1136 //
1137 //      // Restrict to a valid value
1138 //      new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
1139 //      new_top_y = std::max(0, new_top_y);
1140 //
1141 //      scrollDocView(new_top_y);
1142 //
1143 //      // Update the scrollbar.
1144 //      workArea_->setScrollbarParams(t->height(), top_y(), defaultRowHeight());}
1145 }
1146
1147
1148 void BufferView::setCursorFromRow(int row)
1149 {
1150         int tmpid = -1;
1151         int tmppos = -1;
1152
1153         buffer_->texrow().getIdFromRow(row, tmpid, tmppos);
1154
1155         if (tmpid == -1)
1156                 buffer_->text().setCursor(cursor_, 0, 0);
1157         else
1158                 buffer_->text().setCursor(cursor_, buffer_->getParFromID(tmpid).pit(), tmppos);
1159 }
1160
1161
1162 void BufferView::gotoLabel(string const & label)
1163 {
1164         for (InsetIterator it = inset_iterator_begin(buffer_->inset()); it; ++it) {
1165                 vector<string> labels;
1166                 it->getLabelList(*buffer_, labels);
1167                 if (find(labels.begin(),labels.end(),label) != labels.end()) {
1168                         setCursor(it);
1169                         update();
1170                         return;
1171                 }
1172         }
1173 }
1174
1175
1176 LyXText * BufferView::getLyXText()
1177 {
1178         LyXText * text = cursor_.innerText();
1179         BOOST_ASSERT(text);
1180         return text;
1181 }
1182
1183
1184 LyXText const * BufferView::getLyXText() const
1185 {
1186         LyXText const * text = cursor_.innerText();
1187         BOOST_ASSERT(text);
1188         return text;
1189 }
1190
1191
1192 int BufferView::workHeight() const
1193 {
1194         return height_;
1195 }
1196
1197
1198 void BufferView::setCursor(DocIterator const & dit)
1199 {
1200         size_t const n = dit.depth();
1201         for (size_t i = 0; i < n; ++i)
1202                 dit[i].inset().edit(cursor_, true);
1203
1204         cursor_.setCursor(dit);
1205         cursor_.selection() = false;
1206 }
1207
1208
1209 void BufferView::mouseSetCursor(LCursor & cur)
1210 {
1211         BOOST_ASSERT(&cur.bv() == this);
1212
1213         // Has the cursor just left the inset?
1214         bool badcursor = false;
1215         if (&cursor_.inset() != &cur.inset())
1216                 badcursor = cursor_.inset().notifyCursorLeaves(cursor_);
1217
1218         // do the dEPM magic if needed
1219         // FIXME: move this to InsetText::notifyCursorLeaves?
1220         if (!badcursor && cursor_.inTexted())
1221                 cursor_.text()->deleteEmptyParagraphMechanism(cur, cursor_);
1222
1223         cursor_ = cur;
1224         cursor_.clearSelection();
1225         cursor_.setTargetX();
1226         finishUndo();
1227
1228 }
1229
1230
1231 void BufferView::putSelectionAt(DocIterator const & cur,
1232                                 int length, bool backwards)
1233 {
1234         cursor_.clearSelection();
1235
1236         setCursor(cur);
1237
1238         if (length) {
1239                 if (backwards) {
1240                         cursor_.pos() += length;
1241                         cursor_.setSelection(cursor_, -length);
1242                 } else
1243                         cursor_.setSelection(cursor_, length);
1244         }
1245 }
1246
1247
1248 LCursor & BufferView::cursor()
1249 {
1250         return cursor_;
1251 }
1252
1253
1254 LCursor const & BufferView::cursor() const
1255 {
1256         return cursor_;
1257 }
1258
1259
1260 lyx::pit_type BufferView::anchor_ref() const
1261 {
1262         return anchor_ref_;
1263 }
1264
1265
1266 ViewMetricsInfo const & BufferView::viewMetricsInfo()
1267 {
1268         return metrics_info_;
1269 }
1270
1271
1272 void BufferView::updateMetrics(bool singlepar)
1273 {
1274         // Remove old position cache
1275         theCoords.clear();
1276         LyXText & buftext = buffer_->text();
1277         lyx::pit_type size = int(buftext.paragraphs().size());
1278
1279         if (anchor_ref_ > int(buftext.paragraphs().size() - 1)) {
1280                 anchor_ref_ = int(buftext.paragraphs().size() - 1);
1281                 offset_ref_ = 0;
1282         }
1283
1284         lyx::pit_type const pit = anchor_ref_;
1285         int pit1 = pit;
1286         int pit2 = pit;
1287         size_t const npit = buftext.paragraphs().size();
1288
1289         // Rebreak anchor paragraph. In Single Paragraph mode, rebreak only
1290         // the (main text, not inset!) paragraph containing the cursor.
1291         // (if this paragraph contains insets etc., rebreaking will
1292         // recursively descend)
1293         if (!singlepar || pit == cursor_.bottom().pit())
1294                 buftext.redoParagraph(pit);
1295         int y0 = buftext.getPar(pit).ascent() - offset_ref_;
1296
1297         // Redo paragraphs above anchor if necessary; again, in Single Par
1298         // mode, only if we encounter the (main text) one having the cursor.
1299         int y1 = y0;
1300         while (y1 > 0 && pit1 > 0) {
1301                 y1 -= buftext.getPar(pit1).ascent();
1302                 --pit1;
1303                 if (!singlepar || pit1 == cursor_.bottom().pit())
1304                         buftext.redoParagraph(pit1);
1305                 y1 -= buftext.getPar(pit1).descent();
1306         }
1307
1308
1309         // Take care of ascent of first line
1310         y1 -= buftext.getPar(pit1).ascent();
1311
1312         // Normalize anchor for next time
1313         anchor_ref_ = pit1;
1314         offset_ref_ = -y1;
1315
1316         // Grey at the beginning is ugly
1317         if (pit1 == 0 && y1 > 0) {
1318                 y0 -= y1;
1319                 y1 = 0;
1320                 anchor_ref_ = 0;
1321         }
1322
1323         // Redo paragraphs below the anchor if necessary. Single par mode:
1324         // only the one containing the cursor if encountered.
1325         int y2 = y0;
1326         while (y2 < height_ && pit2 < int(npit) - 1) {
1327                 y2 += buftext.getPar(pit2).descent();
1328                 ++pit2;
1329                 if (!singlepar || pit2 == cursor_.bottom().pit())
1330                         buftext.redoParagraph(pit2);
1331                 y2 += buftext.getPar(pit2).ascent();
1332         }
1333
1334         // Take care of descent of last line
1335         y2 += buftext.getPar(pit2).descent();
1336
1337         // The coordinates of all these paragraphs are correct, cache them
1338         int y = y1;
1339         CoordCache::InnerParPosCache & parPos = theCoords.parPos()[&buftext];
1340         for (lyx::pit_type pit = pit1; pit <= pit2; ++pit) {
1341                 Paragraph const & par = buftext.getPar(pit);
1342                 y += par.ascent();
1343                 parPos[pit] = Point(0, y);
1344                 if (singlepar && pit == cursor_.bottom().pit()) {
1345                         // In Single Paragraph mode, collect here the
1346                         // y1 and y2 of the (one) paragraph the cursor is in
1347                         y1 = y - par.ascent();
1348                         y2 = y + par.descent();
1349                 }
1350                 y += par.descent();
1351         }
1352
1353         if (singlepar) {
1354                 // collect cursor paragraph iter bounds
1355                 pit1 = cursor_.bottom().pit();
1356                 pit2 = cursor_.bottom().pit();
1357         }
1358
1359         lyxerr[Debug::DEBUG]
1360                 << BOOST_CURRENT_FUNCTION
1361                 << " y1: " << y1
1362                 << " y2: " << y2
1363                 << " pit1: " << pit1
1364                 << " pit2: " << pit2
1365                 << " npit: " << npit
1366                 << " singlepar: " << singlepar
1367                 << "size: " << size
1368                 << endl;
1369
1370         metrics_info_ = ViewMetricsInfo(pit1, pit2, y1, y2, singlepar, size);
1371 }
1372
1373
1374 void BufferView::menuInsertLyXFile(string const & filenm)
1375 {
1376         BOOST_ASSERT(cursor_.inTexted());
1377         string filename = filenm;
1378
1379         if (filename.empty()) {
1380                 // Launch a file browser
1381                 string initpath = lyxrc.document_path;
1382
1383                 if (buffer_) {
1384                         string const trypath = buffer_->filePath();
1385                         // If directory is writeable, use this as default.
1386                         if (isDirWriteable(trypath))
1387                                 initpath = trypath;
1388                 }
1389
1390                 FileDialog fileDlg(lyx::to_utf8(_("Select LyX document to insert")),
1391                         LFUN_FILE_INSERT,
1392                         make_pair(string(lyx::to_utf8(_("Documents|#o#O"))),
1393                                   string(lyxrc.document_path)),
1394                         make_pair(string(lyx::to_utf8(_("Examples|#E#e"))),
1395                                   string(addPath(package().system_support(), "examples"))));
1396
1397                 FileDialog::Result result =
1398                         fileDlg.open(initpath,
1399                                      FileFilterList(lyx::to_utf8(_("LyX Documents (*.lyx)"))),
1400                                      string());
1401
1402                 if (result.first == FileDialog::Later)
1403                         return;
1404
1405                 filename = result.second;
1406
1407                 // check selected filename
1408                 if (filename.empty()) {
1409                         // emit message signal.
1410                         message(_("Canceled."));
1411                         return;
1412                 }
1413         }
1414
1415         // Get absolute path of file and add ".lyx"
1416         // to the filename if necessary
1417         filename = fileSearch(string(), filename, "lyx");
1418
1419         docstring const disp_fn = makeDisplayPath(filename);
1420         // emit message signal.
1421         message(bformat(_("Inserting document %1$s..."), disp_fn));
1422
1423         docstring res;
1424         Buffer buf("", false);
1425         if (::loadLyXFile(&buf, makeAbsPath(filename))) {
1426                 ErrorList & el = buffer_->errorList("Parse");
1427                 // Copy the inserted document error list into the current buffer one.
1428                 el = buf.errorList("Parse");
1429                 lyx::cap::pasteParagraphList(cursor_, buf.paragraphs(),
1430                                              buf.params().textclass, el);
1431                 res = _("Document %1$s inserted.");
1432         } else
1433                 res = _("Could not insert document %1$s");
1434
1435         // emit message signal.
1436         message(bformat(res, disp_fn));
1437         buffer_->errors("Parse");
1438         resize();
1439 }
1440
1441
1442 void BufferView::trackChanges()
1443 {
1444         bool const tracking = buffer_->params().tracking_changes;
1445
1446         if (!tracking) {
1447                 for_each(buffer_->par_iterator_begin(),
1448                          buffer_->par_iterator_end(),
1449                          bind(&Paragraph::trackChanges, _1, Change::UNCHANGED));
1450                 buffer_->params().tracking_changes = true;
1451
1452                 // We cannot allow undos beyond the freeze point
1453                 buffer_->undostack().clear();
1454         } else {
1455                 cursor_.setCursor(doc_iterator_begin(buffer_->inset()));
1456                 if (lyx::find::findNextChange(this)) {
1457                         owner_->getDialogs().show("changes");
1458                         return;
1459                 }
1460
1461                 for_each(buffer_->par_iterator_begin(),
1462                          buffer_->par_iterator_end(),
1463                          mem_fun_ref(&Paragraph::untrackChanges));
1464
1465                 buffer_->params().tracking_changes = false;
1466         }
1467
1468         buffer_->redostack().clear();
1469 }