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