src/BufferView.C

   1 /**
   2  * \file BufferView.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Alfredo Braunstein
   7  * \author Lars Gullik Bjønnes
   8  * \author John Levon
   9  * \author André Pönitz
  10  * \author Jürgen Vigna
  11  *
  12  * Full author contact details are available in file CREDITS.
  13  */
  14
  15 #include <config.h>
  16
  17 #include "BufferView.h"
  18
  19 #include "buffer.h"
  20 #include "buffer_funcs.h"
  21 #include "bufferlist.h"
  22 #include "bufferparams.h"
  23 #include "coordcache.h"
  24 #include "CutAndPaste.h"
  25 #include "debug.h"
  26 #include "dispatchresult.h"
  27 #include "errorlist.h"
  28 #include "factory.h"
  29 #include "FloatList.h"
  30 #include "funcrequest.h"
  31 #include "FuncStatus.h"
  32 #include "gettext.h"
  33 #include "intl.h"
  34 #include "insetiterator.h"
  35 #include "language.h"
  36 #include "LaTeXFeatures.h"
  37 #include "lyx_cb.h" // added for Dispatch functions
  38 #include "lyx_main.h"
  39 #include "lyxfind.h"
  40 #include "lyxfunc.h"
  41 #include "lyxlayout.h"
  42 #include "lyxtext.h"
  43 #include "lyxtextclass.h"
  44 #include "lyxrc.h"
  45 #include "session.h"
  46 #include "paragraph.h"
  47 #include "paragraph_funcs.h"
  48 #include "ParagraphParameters.h"
  49 #include "pariterator.h"
  50 #include "texrow.h"
  51 #include "toc.h"
  52 #include "undo.h"
  53 #include "vspace.h"
  54 #include "WordLangTuple.h"
  55 #include "metricsinfo.h"
  56
  57 #include "insets/insetbibtex.h"
  58 #include "insets/insetcommand.h" // ChangeRefs
  59 #include "insets/insetref.h"
  60 #include "insets/insettext.h"
  61
  62 #include "frontends/Alert.h"
  63 #include "frontends/Clipboard.h"
  64 #include "frontends/Dialogs.h"
  65 #include "frontends/FileDialog.h"
  66 #include "frontends/font_metrics.h"
  67 #include "frontends/Gui.h"
  68 #include "frontends/LyXView.h"
  69 #include "frontends/Selection.h"
  70
  71 #include "graphics/Previews.h"
  72
  73 #include "support/convert.h"
  74 #include "support/filefilterlist.h"
  75 #include "support/filetools.h"
  76 #include "support/package.h"
  77 #include "support/types.h"
  78
  79 #include <boost/bind.hpp>
  80 #include <boost/current_function.hpp>
  81
  82 #include <functional>
  83 #include <vector>
  84
  85
  86 using lyx::frontend::Clipboard;
  87 using lyx::frontend::Gui;
  88
  89 using lyx::docstring;
  90 using lyx::pos_type;
  91
  92 using lyx::support::addPath;
  93 using lyx::support::bformat;
  94 using lyx::support::FileFilterList;
  95 using lyx::support::fileSearch;
  96 using lyx::support::isDirWriteable;
  97 using lyx::support::makeDisplayPath;
  98 using lyx::support::makeAbsPath;
  99 using lyx::support::package;
 100
 101 using std::distance;
 102 using std::endl;
 103 using std::istringstream;
 104 using std::find;
 105 using std::make_pair;
 106 using std::min;
 107 using std::max;
 108 using std::mem_fun_ref;
 109 using std::string;
 110 using std::vector;
 111
 112 extern BufferList bufferlist;
 113
 114
 115 namespace {
 116
 117 unsigned int const saved_positions_num = 20;
 118
 119
 120 /// Return an inset of this class if it exists at the current cursor position
 121 template <class T>
 122 T * getInsetByCode(LCursor & cur, InsetBase::Code code)
 123 {
 124         T * inset = 0;
 125         DocIterator it = cur;
 126         if (it.nextInset() &&
 127             it.nextInset()->lyxCode() == code) {
 128                 inset = static_cast<T*>(it.nextInset());
 129         }
 130         return inset;
 131 }
 132
 133 } // anon namespace
 134
 135
 136 BufferView::BufferView(LyXView * owner)
 137         : owner_(owner), buffer_(0), wh_(0),
 138           cursor_(*this),
 139           multiparsel_cache_(false), anchor_ref_(0), offset_ref_(0)
 140 {
 141         xsel_cache_.set = false;
 142
 143         saved_positions.resize(saved_positions_num);
 144         // load saved bookmarks
 145         lyx::Session::BookmarkList & bmList = LyX::ref().session().loadBookmarks();
 146         for (lyx::Session::BookmarkList::iterator bm = bmList.begin();
 147                 bm != bmList.end(); ++bm)
 148                 if (bm->get<0>() < saved_positions_num)
 149                         saved_positions[bm->get<0>()] = Position( bm->get<1>(), bm->get<2>(), bm->get<3>() );
 150         // and then clear them
 151         bmList.clear();
 152 }
 153
 154
 155 BufferView::~BufferView()
 156 {
 157 }
 158
 159
 160 void BufferView::unsetXSel()
 161 {
 162         xsel_cache_.set = false;
 163 }
 164
 165
 166 Buffer * BufferView::buffer() const
 167 {
 168         return buffer_;
 169 }
 170
 171
 172 LyXView * BufferView::owner() const
 173 {
 174         return owner_;
 175 }
 176
 177
 178 void BufferView::setBuffer(Buffer * b)
 179 {
 180         lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 181                             << "[ b = " << b << "]" << endl;
 182
 183         if (buffer_) {
 184                 // Save the actual cursor position and anchor inside the
 185                 // buffer so that it can be restored in case we rechange
 186                 // to this buffer later on.
 187                 buffer_->saveCursor(cursor_.selectionBegin(),
 188                                     cursor_.selectionEnd());
 189                 // current buffer is going to be switched-off, save cursor pos
 190                 LyX::ref().session().saveFilePosition(buffer_->fileName(),
 191                         boost::tie(cursor_.pit(), cursor_.pos()) );
 192         }
 193
 194         // If we're quitting lyx, don't bother updating stuff
 195         if (quitting) {
 196                 buffer_ = 0;
 197                 return;
 198         }
 199
 200         // If we are closing current buffer, switch to the first in
 201         // buffer list.
 202         if (!b) {
 203                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 204                                     << " No Buffer!" << endl;
 205                 // We are closing the buffer, use the first buffer as current
 206                 buffer_ = bufferlist.first();
 207         } else {
 208                 // Set current buffer
 209                 buffer_ = b;
 210         }
 211
 212         // Reset old cursor
 213         cursor_ = LCursor(*this);
 214         anchor_ref_ = 0;
 215         offset_ref_ = 0;
 216
 217         if (buffer_) {
 218                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 219                                     << "Buffer addr: " << buffer_ << endl;
 220                 cursor_.push(buffer_->inset());
 221                 cursor_.resetAnchor();
 222                 buffer_->text().init(this);
 223                 buffer_->text().setCurrentFont(cursor_);
 224                 if (buffer_->getCursor().size() > 0 &&
 225                     buffer_->getAnchor().size() > 0)
 226                 {
 227                         cursor_.setCursor(buffer_->getAnchor().asDocIterator(&(buffer_->inset())));
 228                         cursor_.resetAnchor();
 229                         cursor_.setCursor(buffer_->getCursor().asDocIterator(&(buffer_->inset())));
 230                         cursor_.setSelection();
 231                 }
 232         }
 233
 234         update();
 235
 236         if (buffer_ && lyx::graphics::Previews::status() != LyXRC::PREVIEW_OFF)
 237                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 238 }
 239
 240
 241 bool BufferView::loadLyXFile(string const & filename, bool tolastfiles)
 242 {
 243         // Get absolute path of file and add ".lyx"
 244         // to the filename if necessary
 245         string s = fileSearch(string(), filename, "lyx");
 246
 247         bool const found = !s.empty();
 248
 249         if (!found)
 250                 s = filename;
 251
 252         // File already open?
 253         if (bufferlist.exists(s)) {
 254                 docstring const file = makeDisplayPath(s, 20);
 255                 docstring text = bformat(_("The document %1$s is already "
 256                                                      "loaded.\n\nDo you want to revert "
 257                                                      "to the saved version?"), file);
 258                 int const ret = Alert::prompt(_("Revert to saved document?"),
 259                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 260
 261                 if (ret != 0) {
 262                         setBuffer(bufferlist.getBuffer(s));
 263                         return true;
 264                 }
 265                 // FIXME: should be LFUN_REVERT
 266                 if (!bufferlist.close(bufferlist.getBuffer(s), false))
 267                         return false;
 268                 // Fall through to new load. (Asger)
 269         }
 270
 271         Buffer * b = 0;
 272
 273         if (found) {
 274                 b = bufferlist.newBuffer(s);
 275                 if (!::loadLyXFile(b, s)) {
 276                         bufferlist.release(b);
 277                         return false;
 278                 }
 279         } else {
 280                 docstring text = bformat(_("The document %1$s does not yet "
 281                                                      "exist.\n\nDo you want to create "
 282                                                      "a new document?"), lyx::from_utf8(s));
 283                 int const ret = Alert::prompt(_("Create new document?"),
 284                          text, 0, 1, _("&Create"), _("Cancel"));
 285
 286                 if (ret == 0) {
 287                         b = newFile(s, string(), true);
 288                         if (!b)
 289                                 return false;
 290                 } else
 291                         return false;
 292         }
 293
 294         setBuffer(b);
 295         // Send the "errors" signal in case of parsing errors
 296         b->errors("Parse");
 297
 298         // scroll to the position when the file was last closed
 299         if (lyxrc.use_lastfilepos) {
 300                 lyx::pit_type pit;
 301                 lyx::pos_type pos;
 302                 boost::tie(pit, pos) = LyX::ref().session().loadFilePosition(s);
 303                 // I am not sure how to separate the following part to a function
 304                 // so I will leave this to Lars.
 305                 //
 306                 // check pit since the document may be externally changed.
 307                 if ( static_cast<size_t>(pit) < b->paragraphs().size() ) {
 308                         ParIterator it = b->par_iterator_begin();
 309                         ParIterator const end = b->par_iterator_end();
 310                         for (; it != end; ++it)
 311                                 if (it.pit() == pit) {
 312                                         // restored pos may be bigger than it->size
 313                                         setCursor(makeDocIterator(it, min(pos, it->size())));
 314                                         update(Update::FitCursor);
 315                                         break;
 316                                 }
 317                 }
 318         }
 319
 320         if (tolastfiles)
 321                 LyX::ref().session().addLastFile(b->fileName());
 322
 323         return true;
 324 }
 325
 326
 327 void BufferView::reload()
 328 {
 329         string const fn = buffer_->fileName();
 330         if (bufferlist.close(buffer_, false))
 331                 loadLyXFile(fn);
 332 }
 333
 334
 335 void BufferView::resize()
 336 {
 337         if (!buffer_)
 338                 return;
 339
 340         lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION << endl;
 341
 342         buffer_->text().init(this);
 343         update();
 344         switchKeyMap();
 345 }
 346
 347
 348 bool BufferView::fitCursor()
 349 {
 350         if (bv_funcs::status(this, cursor_) == bv_funcs::CUR_INSIDE) {
 351                 LyXFont const font = cursor_.getFont();
 352                 int const asc = font_metrics::maxAscent(font);
 353                 int const des = font_metrics::maxDescent(font);
 354                 Point const p = bv_funcs::getPos(cursor_, cursor_.boundary());
 355                 if (p.y_ - asc >= 0 && p.y_ + des < height_)
 356                         return false;
 357         }
 358         center();
 359         return true;
 360 }
 361
 362
 363 bool BufferView::multiParSel()
 364 {
 365         if (!cursor_.selection())
 366                 return false;
 367         bool ret = multiparsel_cache_;
 368         multiparsel_cache_ = cursor_.selBegin().pit() != cursor_.selEnd().pit();
 369         // Either this, or previous selection spans paragraphs
 370         return ret || multiparsel_cache_;
 371 }
 372
 373
 374 bool BufferView::update(Update::flags flags)
 375 {
 376         // This is close to a hot-path.
 377         if (lyxerr.debugging(Debug::DEBUG)) {
 378                 lyxerr[Debug::DEBUG]
 379                         << BOOST_CURRENT_FUNCTION
 380                         << "[fitcursor = " << (flags & Update::FitCursor)
 381                         << ", forceupdate = " << (flags & Update::Force)
 382                         << ", singlepar = " << (flags & Update::SinglePar)
 383                         << "]  buffer: " << buffer_ << endl;
 384         }
 385
 386         // Check needed to survive LyX startup
 387         if (!buffer_)
 388                 return false;
 389
 390         // Update macro store
 391         buffer_->buildMacros();
 392
 393         // First drawing step
 394         updateMetrics(flags & Update::SinglePar);
 395
 396         // The second drawing step is done in WorkArea::redraw() if needed.
 397         bool const need_second_step =
 398                 (flags & (Update::Force | Update::FitCursor | Update::MultiParSel))
 399                 && (fitCursor() || multiParSel());
 400
 401         return need_second_step;
 402 }
 403
 404
 405 void BufferView::updateScrollbar()
 406 {
 407         if (!buffer_) {
 408                 lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION
 409                                      << " no text in updateScrollbar" << endl;
 410                 scrollbarParameters_.reset();
 411                 return;
 412         }
 413
 414         LyXText & t = buffer_->text();
 415         int const parsize = int(t.paragraphs().size() - 1);
 416         if (anchor_ref_ >  parsize)  {
 417                 anchor_ref_ = parsize;
 418                 offset_ref_ = 0;
 419         }
 420
 421         lyxerr[Debug::GUI]
 422                 << BOOST_CURRENT_FUNCTION
 423                 << " Updating scrollbar: height: " << t.paragraphs().size()
 424                 << " curr par: " << cursor_.bottom().pit()
 425                 << " default height " << defaultRowHeight() << endl;
 426
 427         // It would be better to fix the scrollbar to understand
 428         // values in [0..1] and divide everything by wh
 429
 430         // estimated average paragraph height:
 431         if (wh_ == 0)
 432                 wh_ = height_ / 4;
 433         int h = t.getPar(anchor_ref_).height();
 434
 435         // Normalize anchor/offset (MV):
 436         while (offset_ref_ > h && anchor_ref_ < parsize) {
 437                 anchor_ref_++;
 438                 offset_ref_ -= h;
 439                 h = t.getPar(anchor_ref_).height();
 440         }
 441         // Look at paragraph heights on-screen
 442         int sumh = 0;
 443         int nh = 0;
 444         for (lyx::pit_type pit = anchor_ref_; pit <= parsize; ++pit) {
 445                 if (sumh > height_)
 446                         break;
 447                 int const h2 = t.getPar(pit).height();
 448                 sumh += h2;
 449                 nh++;
 450         }
 451         int const hav = sumh / nh;
 452         // More realistic average paragraph height
 453         if (hav > wh_)
 454                 wh_ = hav;
 455
 456         scrollbarParameters_.height = (parsize + 1) * wh_;
 457         scrollbarParameters_.position = anchor_ref_ * wh_ + int(offset_ref_ * wh_ / float(h));
 458         scrollbarParameters_.lineScrollHeight = int(wh_ * defaultRowHeight() / float(h));
 459 }
 460
 461
 462 ScrollbarParameters const & BufferView::scrollbarParameters() const
 463 {
 464         return scrollbarParameters_;
 465 }
 466
 467
 468 void BufferView::scrollDocView(int value)
 469 {
 470         lyxerr[Debug::GUI] << BOOST_CURRENT_FUNCTION
 471                            << "[ value = " << value << "]" << endl;
 472
 473         if (!buffer_)
 474                 return;
 475
 476         LyXText & t = buffer_->text();
 477
 478         float const bar = value / float(wh_ * t.paragraphs().size());
 479
 480         anchor_ref_ = int(bar * t.paragraphs().size());
 481         if (anchor_ref_ >  int(t.paragraphs().size()) - 1)
 482                 anchor_ref_ = int(t.paragraphs().size()) - 1;
 483         t.redoParagraph(anchor_ref_);
 484         int const h = t.getPar(anchor_ref_).height();
 485         offset_ref_ = int((bar * t.paragraphs().size() - anchor_ref_) * h);
 486 }
 487
 488
 489 void BufferView::setCursorFromScrollbar()
 490 {
 491         LyXText & t = buffer_->text();
 492
 493         int const height = 2 * defaultRowHeight();
 494         int const first = height;
 495         int const last = height_ - height;
 496         LCursor & cur = cursor_;
 497
 498         bv_funcs::CurStatus st = bv_funcs::status(this, cur);
 499
 500         switch (st) {
 501         case bv_funcs::CUR_ABOVE:
 502                 t.setCursorFromCoordinates(cur, 0, first);
 503                 cur.clearSelection();
 504                 break;
 505         case bv_funcs::CUR_BELOW:
 506                 t.setCursorFromCoordinates(cur, 0, last);
 507                 cur.clearSelection();
 508                 break;
 509         case bv_funcs::CUR_INSIDE:
 510                 int const y = bv_funcs::getPos(cur, cur.boundary()).y_;
 511                 int const newy = min(last, max(y, first));
 512                 if (y != newy) {
 513                         cur.reset(buffer_->inset());
 514                         t.setCursorFromCoordinates(cur, 0, newy);
 515                 }
 516         }
 517 }
 518
 519
 520 bool BufferView::available() const
 521 {
 522         return buffer_;
 523 }
 524
 525
 526 Change const BufferView::getCurrentChange()
 527 {
 528         if (!buffer_->params().tracking_changes || !cursor_.selection())
 529                 return Change(Change::UNCHANGED);
 530
 531         DocIterator dit = cursor_.selectionBegin();
 532         return dit.paragraph().lookupChange(dit.pos());
 533 }
 534
 535
 536 void BufferView::savePosition(unsigned int i)
 537 {
 538         if (i >= saved_positions_num)
 539                 return;
 540         BOOST_ASSERT(cursor_.inTexted());
 541         saved_positions[i] = Position(buffer_->fileName(),
 542                                       cursor_.paragraph().id(),
 543                                       cursor_.pos());
 544         if (i > 0)
 545                 // emit message signal.
 546                 message(bformat(_("Saved bookmark %1$d"), i));
 547 }
 548
 549
 550 void BufferView::restorePosition(unsigned int i)
 551 {
 552         if (i >= saved_positions_num)
 553                 return;
 554
 555         string const fname = saved_positions[i].filename;
 556
 557         cursor_.clearSelection();
 558
 559         if (fname != buffer_->fileName()) {
 560                 Buffer * b = 0;
 561                 if (bufferlist.exists(fname))
 562                         b = bufferlist.getBuffer(fname);
 563                 else {
 564                         b = bufferlist.newBuffer(fname);
 565                         // Don't ask, just load it
 566                         ::loadLyXFile(b, fname);
 567                 }
 568                 if (b)
 569                         setBuffer(b);
 570         }
 571
 572         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 573         if (par == buffer_->par_iterator_end())
 574                 return;
 575
 576         setCursor(makeDocIterator(par, min(par->size(), saved_positions[i].par_pos)));
 577
 578         if (i > 0)
 579                 // emit message signal.
 580                 message(bformat(_("Moved to bookmark %1$d"), i));
 581 }
 582
 583
 584 bool BufferView::isSavedPosition(unsigned int i)
 585 {
 586         return i < saved_positions_num && !saved_positions[i].filename.empty();
 587 }
 588
 589 void BufferView::saveSavedPositions()
 590 {
 591         // save bookmarks. It is better to use the pit interface
 592         // but I do not know how to effectively convert between
 593         // par_id and pit.
 594         for (unsigned int i=1; i < saved_positions_num; ++i) {
 595                 if ( isSavedPosition(i) )
 596                         LyX::ref().session().saveBookmark( boost::tie(
 597                                 i,
 598                                 saved_positions[i].filename,
 599                                 saved_positions[i].par_id,
 600                                 saved_positions[i].par_pos) );
 601         }
 602 }
 603
 604 void BufferView::switchKeyMap()
 605 {
 606         if (!lyxrc.rtl_support)
 607                 return;
 608
 609         Intl & intl = owner_->getIntl();
 610         if (getLyXText()->real_current_font.isRightToLeft()) {
 611                 if (intl.keymap == Intl::PRIMARY)
 612                         intl.keyMapSec();
 613         } else {
 614                 if (intl.keymap == Intl::SECONDARY)
 615                         intl.keyMapPrim();
 616         }
 617 }
 618
 619
 620 int BufferView::workWidth() const
 621 {
 622         return width_;
 623 }
 624
 625
 626 void BufferView::center()
 627 {
 628         CursorSlice & bot = cursor_.bottom();
 629         lyx::pit_type const pit = bot.pit();
 630         bot.text()->redoParagraph(pit);
 631         Paragraph const & par = bot.text()->paragraphs()[pit];
 632         anchor_ref_ = pit;
 633         offset_ref_ = bv_funcs::coordOffset(cursor_, cursor_.boundary()).y_
 634                 + par.ascent() - height_ / 2;
 635 }
 636
 637
 638 FuncStatus BufferView::getStatus(FuncRequest const & cmd)
 639 {
 640         FuncStatus flag;
 641
 642         switch (cmd.action) {
 643
 644         case LFUN_UNDO:
 645                 flag.enabled(!buffer_->undostack().empty());
 646                 break;
 647         case LFUN_REDO:
 648                 flag.enabled(!buffer_->redostack().empty());
 649                 break;
 650         case LFUN_FILE_INSERT:
 651         case LFUN_FILE_INSERT_ASCII_PARA:
 652         case LFUN_FILE_INSERT_ASCII:
 653         case LFUN_BOOKMARK_SAVE:
 654                 // FIXME: Actually, these LFUNS should be moved to LyXText
 655                 flag.enabled(cursor_.inTexted());
 656                 break;
 657         case LFUN_FONT_STATE:
 658         case LFUN_LABEL_INSERT:
 659         case LFUN_PARAGRAPH_GOTO:
 660         // FIXME handle non-trivially
 661         case LFUN_OUTLINE_UP:
 662         case LFUN_OUTLINE_DOWN:
 663         case LFUN_OUTLINE_IN:
 664         case LFUN_OUTLINE_OUT:
 665         case LFUN_NOTE_NEXT:
 666         case LFUN_REFERENCE_NEXT:
 667         case LFUN_WORD_FIND:
 668         case LFUN_WORD_REPLACE:
 669         case LFUN_MARK_OFF:
 670         case LFUN_MARK_ON:
 671         case LFUN_MARK_TOGGLE:
 672         case LFUN_SCREEN_RECENTER:
 673         case LFUN_BIBTEX_DATABASE_ADD:
 674         case LFUN_BIBTEX_DATABASE_DEL:
 675         case LFUN_WORDS_COUNT:
 676         case LFUN_NEXT_INSET_TOGGLE:
 677                 flag.enabled(true);
 678                 break;
 679
 680         case LFUN_LABEL_GOTO: {
 681                 flag.enabled(!cmd.argument().empty()
 682                     || getInsetByCode<InsetRef>(cursor_, InsetBase::REF_CODE));
 683                 break;
 684         }
 685
 686         case LFUN_BOOKMARK_GOTO:
 687                 flag.enabled(isSavedPosition(convert<unsigned int>(lyx::to_utf8(cmd.argument()))));
 688                 break;
 689         case LFUN_CHANGES_TRACK:
 690                 flag.enabled(true);
 691                 flag.setOnOff(buffer_->params().tracking_changes);
 692                 break;
 693
 694         case LFUN_CHANGES_OUTPUT: {
 695                 OutputParams runparams;
 696                 LaTeXFeatures features(*buffer_, buffer_->params(), runparams);
 697                 flag.enabled(buffer_ && buffer_->params().tracking_changes
 698                         && features.isAvailable("dvipost"));
 699                 flag.setOnOff(buffer_->params().output_changes);
 700                 break;
 701         }
 702
 703         case LFUN_CHANGES_MERGE:
 704         case LFUN_CHANGE_ACCEPT: // what about these two
 705         case LFUN_CHANGE_REJECT: // what about these two
 706         case LFUN_ALL_CHANGES_ACCEPT:
 707         case LFUN_ALL_CHANGES_REJECT:
 708                 flag.enabled(buffer_ && buffer_->params().tracking_changes);
 709                 break;
 710
 711         case LFUN_BUFFER_TOGGLE_COMPRESSION: {
 712                 flag.setOnOff(buffer_->params().compressed);
 713                 break;
 714         }
 715
 716         default:
 717                 flag.enabled(false);
 718         }
 719
 720         return flag;
 721 }
 722
 723
 724 bool BufferView::dispatch(FuncRequest const & cmd)
 725 {
 726         //lyxerr << BOOST_CURRENT_FUNCTION
 727         //       << [ cmd = " << cmd << "]" << endl;
 728
 729         // Make sure that the cached BufferView is correct.
 730         lyxerr[Debug::ACTION] << BOOST_CURRENT_FUNCTION
 731                 << " action[" << cmd.action << ']'
 732                 << " arg[" << lyx::to_utf8(cmd.argument()) << ']'
 733                 << " x[" << cmd.x << ']'
 734                 << " y[" << cmd.y << ']'
 735                 << " button[" << cmd.button() << ']'
 736                 << endl;
 737
 738         LCursor & cur = cursor_;
 739
 740         switch (cmd.action) {
 741
 742         case LFUN_UNDO:
 743                 if (buffer_) {
 744                         cur.message(_("Undo"));
 745                         cur.clearSelection();
 746                         if (!textUndo(*this))
 747                                 cur.message(_("No further undo information"));
 748                         update();
 749                         switchKeyMap();
 750                 }
 751                 break;
 752
 753         case LFUN_REDO:
 754                 if (buffer_) {
 755                         cur.message(_("Redo"));
 756                         cur.clearSelection();
 757                         if (!textRedo(*this))
 758                                 cur.message(_("No further redo information"));
 759                         update();
 760                         switchKeyMap();
 761                 }
 762                 break;
 763
 764         case LFUN_FILE_INSERT:
 765                 // FIXME: We don't know the encoding of filenames
 766                 menuInsertLyXFile(lyx::to_utf8(cmd.argument()));
 767                 break;
 768
 769         case LFUN_FILE_INSERT_ASCII_PARA:
 770                 // FIXME: We don't know the encoding of filenames
 771                 insertAsciiFile(this, lyx::to_utf8(cmd.argument()), true);
 772                 break;
 773
 774         case LFUN_FILE_INSERT_ASCII:
 775                 // FIXME: We don't know the encoding of filenames
 776                 insertAsciiFile(this, lyx::to_utf8(cmd.argument()), false);
 777                 break;
 778
 779         case LFUN_FONT_STATE:
 780                 cur.message(lyx::from_utf8(cur.currentState()));
 781                 break;
 782
 783         case LFUN_BOOKMARK_SAVE:
 784                 savePosition(convert<unsigned int>(lyx::to_utf8(cmd.argument())));
 785                 break;
 786
 787         case LFUN_BOOKMARK_GOTO:
 788                 restorePosition(convert<unsigned int>(lyx::to_utf8(cmd.argument())));
 789                 break;
 790
 791         case LFUN_LABEL_GOTO: {
 792                 string label = lyx::to_utf8(cmd.argument());
 793                 if (label.empty()) {
 794                         InsetRef * inset =
 795                                 getInsetByCode<InsetRef>(cursor_,
 796                                                          InsetBase::REF_CODE);
 797                         if (inset) {
 798                                 label = inset->getContents();
 799                                 savePosition(0);
 800                         }
 801                 }
 802
 803                 if (!label.empty())
 804                         gotoLabel(label);
 805                 break;
 806         }
 807
 808         case LFUN_PARAGRAPH_GOTO: {
 809                 int const id = convert<int>(lyx::to_utf8(cmd.argument()));
 810                 ParIterator par = buffer_->getParFromID(id);
 811                 if (par == buffer_->par_iterator_end()) {
 812                         lyxerr[Debug::INFO] << "No matching paragraph found! ["
 813                                             << id << ']' << endl;
 814                         break;
 815                 } else {
 816                         lyxerr[Debug::INFO] << "Paragraph " << par->id()
 817                                             << " found." << endl;
 818                 }
 819
 820                 // Set the cursor
 821                 setCursor(makeDocIterator(par, 0));
 822
 823                 update();
 824                 switchKeyMap();
 825                 break;
 826         }
 827
 828         case LFUN_OUTLINE_UP:
 829                 lyx::toc::outline(lyx::toc::Up, cursor_);
 830                 cursor_.text()->setCursor(cursor_, cursor_.pit(), 0);
 831                 updateLabels(*buffer_);
 832                 break;
 833         case LFUN_OUTLINE_DOWN:
 834                 lyx::toc::outline(lyx::toc::Down, cursor_);
 835                 cursor_.text()->setCursor(cursor_, cursor_.pit(), 0);
 836                 updateLabels(*buffer_);
 837                 break;
 838         case LFUN_OUTLINE_IN:
 839                 lyx::toc::outline(lyx::toc::In, cursor_);
 840                 updateLabels(*buffer_);
 841                 break;
 842         case LFUN_OUTLINE_OUT:
 843                 lyx::toc::outline(lyx::toc::Out, cursor_);
 844                 updateLabels(*buffer_);
 845                 break;
 846
 847         case LFUN_NOTE_NEXT:
 848                 bv_funcs::gotoInset(this, InsetBase::NOTE_CODE, false);
 849                 break;
 850
 851         case LFUN_REFERENCE_NEXT: {
 852                 vector<InsetBase_code> tmp;
 853                 tmp.push_back(InsetBase::LABEL_CODE);
 854                 tmp.push_back(InsetBase::REF_CODE);
 855                 bv_funcs::gotoInset(this, tmp, true);
 856                 break;
 857         }
 858
 859         case LFUN_CHANGES_TRACK:
 860                 trackChanges();
 861                 break;
 862
 863         case LFUN_CHANGES_OUTPUT: {
 864                 bool const state = buffer_->params().output_changes;
 865                 buffer_->params().output_changes = !state;
 866                 break;
 867         }
 868
 869         case LFUN_CHANGES_MERGE:
 870                 if (lyx::find::findNextChange(this))
 871                         owner_->getDialogs().show("changes");
 872                 break;
 873
 874         case LFUN_ALL_CHANGES_ACCEPT: {
 875                 cursor_.reset(buffer_->inset());
 876 #ifdef WITH_WARNINGS
 877 #warning FIXME changes
 878 #endif
 879                 while (lyx::find::findNextChange(this))
 880                         getLyXText()->acceptChange(cursor_);
 881                 update();
 882                 break;
 883         }
 884
 885         case LFUN_ALL_CHANGES_REJECT: {
 886                 cursor_.reset(buffer_->inset());
 887 #ifdef WITH_WARNINGS
 888 #warning FIXME changes
 889 #endif
 890                 while (lyx::find::findNextChange(this))
 891                         getLyXText()->rejectChange(cursor_);
 892                 break;
 893         }
 894
 895         case LFUN_WORD_FIND:
 896                 lyx::find::find(this, cmd);
 897                 break;
 898
 899         case LFUN_WORD_REPLACE:
 900                 lyx::find::replace(this, cmd);
 901                 break;
 902
 903         case LFUN_MARK_OFF:
 904                 cur.clearSelection();
 905                 cur.resetAnchor();
 906                 cur.message(lyx::from_utf8(N_("Mark off")));
 907                 break;
 908
 909         case LFUN_MARK_ON:
 910                 cur.clearSelection();
 911                 cur.mark() = true;
 912                 cur.resetAnchor();
 913                 cur.message(lyx::from_utf8(N_("Mark on")));
 914                 break;
 915
 916         case LFUN_MARK_TOGGLE:
 917                 cur.clearSelection();
 918                 if (cur.mark()) {
 919                         cur.mark() = false;
 920                         cur.message(lyx::from_utf8(N_("Mark removed")));
 921                 } else {
 922                         cur.mark() = true;
 923                         cur.message(lyx::from_utf8(N_("Mark set")));
 924                 }
 925                 cur.resetAnchor();
 926                 break;
 927
 928         case LFUN_SCREEN_RECENTER:
 929                 center();
 930                 break;
 931
 932         case LFUN_BIBTEX_DATABASE_ADD: {
 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->addDatabase(lyx::to_utf8(cmd.argument())))
 939                                 buffer_->updateBibfilesCache();
 940                 }
 941                 break;
 942         }
 943
 944         case LFUN_BIBTEX_DATABASE_DEL: {
 945                 LCursor tmpcur = cursor_;
 946                 bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
 947                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
 948                                                 InsetBase::BIBTEX_CODE);
 949                 if (inset) {
 950                         if (inset->delDatabase(lyx::to_utf8(cmd.argument())))
 951                                 buffer_->updateBibfilesCache();
 952                 }
 953                 break;
 954         }
 955
 956         case LFUN_WORDS_COUNT: {
 957                 DocIterator from, to;
 958                 if (cur.selection()) {
 959                         from = cur.selectionBegin();
 960                         to = cur.selectionEnd();
 961                 } else {
 962                         from = doc_iterator_begin(buffer_->inset());
 963                         to = doc_iterator_end(buffer_->inset());
 964                 }
 965                 int const count = countWords(from, to);
 966                 docstring message;
 967                 if (count != 1) {
 968                         if (cur.selection())
 969                                 message = bformat(_("%1$d words in selection."),
 970                                           count);
 971                                 else
 972                                         message = bformat(_("%1$d words in document."),
 973                                                           count);
 974                 }
 975                 else {
 976                         if (cur.selection())
 977                                 message = _("One word in selection.");
 978                         else
 979                                 message = _("One word in document.");
 980                 }
 981
 982                 Alert::information(_("Count words"), message);
 983         }
 984                 break;
 985
 986         case LFUN_BUFFER_TOGGLE_COMPRESSION:
 987                 // turn compression on/off
 988                 buffer_->params().compressed = !buffer_->params().compressed;
 989                 break;
 990
 991         case LFUN_NEXT_INSET_TOGGLE: {
 992                 // this is the real function we want to invoke
 993                 FuncRequest tmpcmd = FuncRequest(LFUN_INSET_TOGGLE, cmd.origin);
 994                 // if there is an inset at cursor, see whether it
 995                 // wants to toggle.
 996                 InsetBase * inset = cur.nextInset();
 997                 if (inset && inset->isActive()) {
 998                         LCursor tmpcur = cur;
 999                         tmpcur.pushLeft(*inset);
1000                         inset->dispatch(tmpcur, tmpcmd);
1001                         if (tmpcur.result().dispatched()) {
1002                                 cur.dispatched();
1003                         }
1004                 }
1005                 // if it did not work, try the underlying inset.
1006                 if (!cur.result().dispatched())
1007                         cur.dispatch(tmpcmd);
1008
1009                 if (cur.result().dispatched())
1010                         cur.clearSelection();
1011
1012                 break;
1013         }
1014
1015         default:
1016                 return false;
1017         }
1018
1019         return true;
1020 }
1021
1022
1023 void BufferView::selectionRequested()
1024 {
1025         static docstring sel;
1026
1027         if (!buffer_)
1028                 return;
1029
1030         LCursor & cur = cursor_;
1031
1032         if (!cur.selection()) {
1033                 xsel_cache_.set = false;
1034                 return;
1035         }
1036
1037         if (!xsel_cache_.set ||
1038             cur.top() != xsel_cache_.cursor ||
1039             cur.anchor_.top() != xsel_cache_.anchor)
1040         {
1041                 xsel_cache_.cursor = cur.top();
1042                 xsel_cache_.anchor = cur.anchor_.top();
1043                 xsel_cache_.set = cur.selection();
1044                 sel = cur.selectionAsString(false);
1045                 if (!sel.empty())
1046                         owner_->gui().selection().put(sel);
1047         }
1048 }
1049
1050
1051 void BufferView::selectionLost()
1052 {
1053         if (buffer_) {
1054                 cursor_.clearSelection();
1055                 xsel_cache_.set = false;
1056         }
1057 }
1058
1059
1060 void BufferView::workAreaResize(int width, int height)
1061 {
1062         bool const widthChange = width != width_;
1063         bool const heightChange = height != height_;
1064
1065         // Update from work area
1066         width_ = width;
1067         height_ = height;
1068
1069         if (buffer_ && widthChange) {
1070                 // The WorkArea content needs a resize
1071                 resize();
1072         }
1073
1074         if (widthChange || heightChange)
1075                 update();
1076 }
1077
1078
1079 bool BufferView::workAreaDispatch(FuncRequest const & cmd0)
1080 {
1081         //lyxerr << BOOST_CURRENT_FUNCTION << "[ cmd0 " << cmd0 << "]" << endl;
1082
1083         // This is only called for mouse related events including
1084         // LFUN_FILE_OPEN generated by drag-and-drop.
1085         FuncRequest cmd = cmd0;
1086
1087         if (!buffer_)
1088                 return false;
1089
1090         LCursor cur(*this);
1091         cur.push(buffer_->inset());
1092         cur.selection() = cursor_.selection();
1093
1094         // Doesn't go through lyxfunc, so we need to update
1095         // the layout choice etc. ourselves
1096
1097         // E.g. Qt mouse press when no buffer
1098         if (!buffer_)
1099                 return false;
1100
1101         // Either the inset under the cursor or the
1102         // surrounding LyXText will handle this event.
1103
1104         // Build temporary cursor.
1105         cmd.y = min(max(cmd.y, -1), height_);
1106         InsetBase * inset = buffer_->text().editXY(cur, cmd.x, cmd.y);
1107         //lyxerr << BOOST_CURRENT_FUNCTION
1108         //       << " * hit inset at tip: " << inset << endl;
1109         //lyxerr << BOOST_CURRENT_FUNCTION
1110         //       << " * created temp cursor:" << cur << endl;
1111
1112         // Put anchor at the same position.
1113         cur.resetAnchor();
1114
1115         // Try to dispatch to an non-editable inset near this position
1116         // via the temp cursor. If the inset wishes to change the real
1117         // cursor it has to do so explicitly by using
1118         //  cur.bv().cursor() = cur;  (or similar)
1119         if (inset)
1120                 inset->dispatch(cur, cmd);
1121
1122         // Now dispatch to the temporary cursor. If the real cursor should
1123         // be modified, the inset's dispatch has to do so explicitly.
1124         if (!cur.result().dispatched())
1125                 cur.dispatch(cmd);
1126
1127         if (cur.result().dispatched()) {
1128                 // Redraw if requested or necessary.
1129                 if (cur.result().update())
1130                         update(Update::FitCursor | Update::Force);
1131                 else
1132                         update(Update::FitCursor | Update::MultiParSel);
1133         }
1134
1135         return true;
1136 }
1137
1138
1139 void BufferView::scroll(int lines)
1140 {
1141 //      if (!buffer_)
1142 //              return;
1143 //
1144 //      LyXText const * t = &buffer_->text();
1145 //      int const line_height = defaultRowHeight();
1146 //
1147 //      // The new absolute coordinate
1148 //      int new_top_y = top_y() + lines * line_height;
1149 //
1150 //      // Restrict to a valid value
1151 //      new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
1152 //      new_top_y = std::max(0, new_top_y);
1153 //
1154 //      scrollDocView(new_top_y);
1155 //
1156 //      // Update the scrollbar.
1157 //      workArea_->setScrollbarParams(t->height(), top_y(), defaultRowHeight());}
1158 }
1159
1160
1161 void BufferView::setCursorFromRow(int row)
1162 {
1163         int tmpid = -1;
1164         int tmppos = -1;
1165
1166         buffer_->texrow().getIdFromRow(row, tmpid, tmppos);
1167
1168         if (tmpid == -1)
1169                 buffer_->text().setCursor(cursor_, 0, 0);
1170         else
1171                 buffer_->text().setCursor(cursor_, buffer_->getParFromID(tmpid).pit(), tmppos);
1172 }
1173
1174
1175 void BufferView::gotoLabel(string const & label)
1176 {
1177         for (InsetIterator it = inset_iterator_begin(buffer_->inset()); it; ++it) {
1178                 vector<string> labels;
1179                 it->getLabelList(*buffer_, labels);
1180                 if (find(labels.begin(),labels.end(),label) != labels.end()) {
1181                         setCursor(it);
1182                         update();
1183                         return;
1184                 }
1185         }
1186 }
1187
1188
1189 LyXText * BufferView::getLyXText()
1190 {
1191         LyXText * text = cursor_.innerText();
1192         BOOST_ASSERT(text);
1193         return text;
1194 }
1195
1196
1197 LyXText const * BufferView::getLyXText() const
1198 {
1199         LyXText const * text = cursor_.innerText();
1200         BOOST_ASSERT(text);
1201         return text;
1202 }
1203
1204
1205 int BufferView::workHeight() const
1206 {
1207         return height_;
1208 }
1209
1210
1211 LyXText * BufferView::text() const
1212 {
1213         return buffer_ ? &buffer_->text() : 0;
1214 }
1215
1216
1217 void BufferView::setCursor(DocIterator const & dit)
1218 {
1219         size_t const n = dit.depth();
1220         for (size_t i = 0; i < n; ++i)
1221                 dit[i].inset().edit(cursor_, true);
1222
1223         cursor_.setCursor(dit);
1224         cursor_.selection() = false;
1225 }
1226
1227
1228 void BufferView::mouseSetCursor(LCursor & cur)
1229 {
1230         BOOST_ASSERT(&cur.bv() == this);
1231
1232         // Has the cursor just left the inset?
1233         bool badcursor = false;
1234         if (&cursor_.inset() != &cur.inset())
1235                 badcursor = cursor_.inset().notifyCursorLeaves(cursor_);
1236
1237         // do the dEPM magic if needed
1238         // FIXME: move this to InsetText::notifyCursorLeaves?
1239         if (!badcursor && cursor_.inTexted())
1240                 cursor_.text()->deleteEmptyParagraphMechanism(cur, cursor_);
1241
1242         cursor_ = cur;
1243         cursor_.clearSelection();
1244         cursor_.setTargetX();
1245         finishUndo();
1246
1247 }
1248
1249
1250 void BufferView::putSelectionAt(DocIterator const & cur,
1251                                 int length, bool backwards)
1252 {
1253         cursor_.clearSelection();
1254
1255         setCursor(cur);
1256
1257         if (length) {
1258                 if (backwards) {
1259                         cursor_.pos() += length;
1260                         cursor_.setSelection(cursor_, -length);
1261                 } else
1262                         cursor_.setSelection(cursor_, length);
1263         }
1264 }
1265
1266
1267 LCursor & BufferView::cursor()
1268 {
1269         return cursor_;
1270 }
1271
1272
1273 LCursor const & BufferView::cursor() const
1274 {
1275         return cursor_;
1276 }
1277
1278
1279 lyx::pit_type BufferView::anchor_ref() const
1280 {
1281         return anchor_ref_;
1282 }
1283
1284
1285 int BufferView::offset_ref() const
1286 {
1287         return offset_ref_;
1288 }
1289
1290
1291 ViewMetricsInfo const & BufferView::viewMetricsInfo()
1292 {
1293         return metrics_info_;
1294 }
1295
1296
1297 void BufferView::updateMetrics(bool singlepar)
1298 {
1299         // Remove old position cache
1300         theCoords.clear();
1301         LyXText & buftext = buffer_->text();
1302         lyx::pit_type size = int(buftext.paragraphs().size());
1303
1304         if (anchor_ref_ > int(buftext.paragraphs().size() - 1)) {
1305                 anchor_ref_ = int(buftext.paragraphs().size() - 1);
1306                 offset_ref_ = 0;
1307         }
1308
1309         lyx::pit_type const pit = anchor_ref_;
1310         int pit1 = pit;
1311         int pit2 = pit;
1312         size_t const npit = buftext.paragraphs().size();
1313
1314         // Rebreak anchor paragraph. In Single Paragraph mode, rebreak only
1315         // the (main text, not inset!) paragraph containing the cursor.
1316         // (if this paragraph contains insets etc., rebreaking will
1317         // recursively descend)
1318         if (!singlepar || pit == cursor_.bottom().pit())
1319                 buftext.redoParagraph(pit);
1320         int y0 = buftext.getPar(pit).ascent() - offset_ref_;
1321
1322         // Redo paragraphs above anchor if necessary; again, in Single Par
1323         // mode, only if we encounter the (main text) one having the cursor.
1324         int y1 = y0;
1325         while (y1 > 0 && pit1 > 0) {
1326                 y1 -= buftext.getPar(pit1).ascent();
1327                 --pit1;
1328                 if (!singlepar || pit1 == cursor_.bottom().pit())
1329                         buftext.redoParagraph(pit1);
1330                 y1 -= buftext.getPar(pit1).descent();
1331         }
1332
1333
1334         // Take care of ascent of first line
1335         y1 -= buftext.getPar(pit1).ascent();
1336
1337         // Normalize anchor for next time
1338         anchor_ref_ = pit1;
1339         offset_ref_ = -y1;
1340
1341         // Grey at the beginning is ugly
1342         if (pit1 == 0 && y1 > 0) {
1343                 y0 -= y1;
1344                 y1 = 0;
1345                 anchor_ref_ = 0;
1346         }
1347
1348         // Redo paragraphs below the anchor if necessary. Single par mode:
1349         // only the one containing the cursor if encountered.
1350         int y2 = y0;
1351         while (y2 < height_ && pit2 < int(npit) - 1) {
1352                 y2 += buftext.getPar(pit2).descent();
1353                 ++pit2;
1354                 if (!singlepar || pit2 == cursor_.bottom().pit())
1355                         buftext.redoParagraph(pit2);
1356                 y2 += buftext.getPar(pit2).ascent();
1357         }
1358
1359         // Take care of descent of last line
1360         y2 += buftext.getPar(pit2).descent();
1361
1362         // The coordinates of all these paragraphs are correct, cache them
1363         int y = y1;
1364         CoordCache::InnerParPosCache & parPos = theCoords.parPos()[&buftext];
1365         for (lyx::pit_type pit = pit1; pit <= pit2; ++pit) {
1366                 Paragraph const & par = buftext.getPar(pit);
1367                 y += par.ascent();
1368                 parPos[pit] = Point(0, y);
1369                 if (singlepar && pit == cursor_.bottom().pit()) {
1370                         // In Single Paragraph mode, collect here the
1371                         // y1 and y2 of the (one) paragraph the cursor is in
1372                         y1 = y - par.ascent();
1373                         y2 = y + par.descent();
1374                 }
1375                 y += par.descent();
1376         }
1377
1378         if (singlepar) {
1379                 // collect cursor paragraph iter bounds
1380                 pit1 = cursor_.bottom().pit();
1381                 pit2 = cursor_.bottom().pit();
1382         }
1383
1384         lyxerr[Debug::DEBUG]
1385                 << BOOST_CURRENT_FUNCTION
1386                 << " y1: " << y1
1387                 << " y2: " << y2
1388                 << " pit1: " << pit1
1389                 << " pit2: " << pit2
1390                 << " npit: " << npit
1391                 << " singlepar: " << singlepar
1392                 << "size: " << size
1393                 << endl;
1394
1395         metrics_info_ = ViewMetricsInfo(pit1, pit2, y1, y2, singlepar, size);
1396 }
1397
1398
1399 void BufferView::menuInsertLyXFile(string const & filenm)
1400 {
1401         BOOST_ASSERT(cursor_.inTexted());
1402         string filename = filenm;
1403
1404         if (filename.empty()) {
1405                 // Launch a file browser
1406                 string initpath = lyxrc.document_path;
1407
1408                 if (available()) {
1409                         string const trypath = buffer_->filePath();
1410                         // If directory is writeable, use this as default.
1411                         if (isDirWriteable(trypath))
1412                                 initpath = trypath;
1413                 }
1414
1415                 FileDialog fileDlg(lyx::to_utf8(_("Select LyX document to insert")),
1416                         LFUN_FILE_INSERT,
1417                         make_pair(string(lyx::to_utf8(_("Documents|#o#O"))),
1418                                   string(lyxrc.document_path)),
1419                         make_pair(string(lyx::to_utf8(_("Examples|#E#e"))),
1420                                   string(addPath(package().system_support(), "examples"))));
1421
1422                 FileDialog::Result result =
1423                         fileDlg.open(initpath,
1424                                      FileFilterList(lyx::to_utf8(_("LyX Documents (*.lyx)"))),
1425                                      string());
1426
1427                 if (result.first == FileDialog::Later)
1428                         return;
1429
1430                 filename = result.second;
1431
1432                 // check selected filename
1433                 if (filename.empty()) {
1434                         // emit message signal.
1435                         message(_("Canceled."));
1436                         return;
1437                 }
1438         }
1439
1440         // Get absolute path of file and add ".lyx"
1441         // to the filename if necessary
1442         filename = fileSearch(string(), filename, "lyx");
1443
1444         docstring const disp_fn = makeDisplayPath(filename);
1445         // emit message signal.
1446         message(bformat(_("Inserting document %1$s..."), disp_fn));
1447
1448         docstring res;
1449         Buffer buf("", false);
1450         if (::loadLyXFile(&buf, makeAbsPath(filename))) {
1451                 ErrorList & el = buffer_->errorList("Parse");
1452                 // Copy the inserted document error list into the current buffer one.
1453                 el = buf.errorList("Parse");
1454                 lyx::cap::pasteParagraphList(cursor_, buf.paragraphs(),
1455                                              buf.params().textclass, el);
1456                 res = _("Document %1$s inserted.");
1457         } else
1458                 res = _("Could not insert document %1$s");
1459
1460         // emit message signal.
1461         message(bformat(res, disp_fn));
1462         buffer_->errors("Parse");
1463         resize();
1464 }
1465
1466
1467 void BufferView::trackChanges()
1468 {
1469         bool const tracking = buffer_->params().tracking_changes;
1470
1471         if (!tracking) {
1472                 for_each(buffer_->par_iterator_begin(),
1473                          buffer_->par_iterator_end(),
1474                          bind(&Paragraph::trackChanges, _1, Change::UNCHANGED));
1475                 buffer_->params().tracking_changes = true;
1476
1477                 // We cannot allow undos beyond the freeze point
1478                 buffer_->undostack().clear();
1479         } else {
1480                 cursor_.setCursor(doc_iterator_begin(buffer_->inset()));
1481                 if (lyx::find::findNextChange(this)) {
1482                         owner_->getDialogs().show("changes");
1483                         return;
1484                 }
1485
1486                 for_each(buffer_->par_iterator_begin(),
1487                          buffer_->par_iterator_end(),
1488                          mem_fun_ref(&Paragraph::untrackChanges));
1489
1490                 buffer_->params().tracking_changes = false;
1491         }
1492
1493         buffer_->redostack().clear();
1494 }