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