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 Change const BufferView::getCurrentChange()
 521 {
 522         if (!buffer_->params().tracking_changes || !cursor_.selection())
 523                 return Change(Change::UNCHANGED);
 524
 525         DocIterator dit = cursor_.selectionBegin();
 526         return dit.paragraph().lookupChange(dit.pos());
 527 }
 528
 529
 530 void BufferView::savePosition(unsigned int i)
 531 {
 532         if (i >= saved_positions_num)
 533                 return;
 534         BOOST_ASSERT(cursor_.inTexted());
 535         saved_positions[i] = Position(buffer_->fileName(),
 536                                       cursor_.paragraph().id(),
 537                                       cursor_.pos());
 538         if (i > 0)
 539                 // emit message signal.
 540                 message(bformat(_("Saved bookmark %1$d"), i));
 541 }
 542
 543
 544 void BufferView::restorePosition(unsigned int i)
 545 {
 546         if (i >= saved_positions_num)
 547                 return;
 548
 549         string const fname = saved_positions[i].filename;
 550
 551         cursor_.clearSelection();
 552
 553         if (fname != buffer_->fileName()) {
 554                 Buffer * b = 0;
 555                 if (bufferlist.exists(fname))
 556                         b = bufferlist.getBuffer(fname);
 557                 else {
 558                         b = bufferlist.newBuffer(fname);
 559                         // Don't ask, just load it
 560                         ::loadLyXFile(b, fname);
 561                 }
 562                 if (b)
 563                         setBuffer(b);
 564         }
 565
 566         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 567         if (par == buffer_->par_iterator_end())
 568                 return;
 569
 570         setCursor(makeDocIterator(par, min(par->size(), saved_positions[i].par_pos)));
 571
 572         if (i > 0)
 573                 // emit message signal.
 574                 message(bformat(_("Moved to bookmark %1$d"), i));
 575 }
 576
 577
 578 bool BufferView::isSavedPosition(unsigned int i)
 579 {
 580         return i < saved_positions_num && !saved_positions[i].filename.empty();
 581 }
 582
 583 void BufferView::saveSavedPositions()
 584 {
 585         // save bookmarks. It is better to use the pit interface
 586         // but I do not know how to effectively convert between
 587         // par_id and pit.
 588         for (unsigned int i=1; i < saved_positions_num; ++i) {
 589                 if ( isSavedPosition(i) )
 590                         LyX::ref().session().saveBookmark( boost::tie(
 591                                 i,
 592                                 saved_positions[i].filename,
 593                                 saved_positions[i].par_id,
 594                                 saved_positions[i].par_pos) );
 595         }
 596 }
 597
 598 void BufferView::switchKeyMap()
 599 {
 600         if (!lyxrc.rtl_support)
 601                 return;
 602
 603         Intl & intl = owner_->getIntl();
 604         if (getLyXText()->real_current_font.isRightToLeft()) {
 605                 if (intl.keymap == Intl::PRIMARY)
 606                         intl.keyMapSec();
 607         } else {
 608                 if (intl.keymap == Intl::SECONDARY)
 609                         intl.keyMapPrim();
 610         }
 611 }
 612
 613
 614 int BufferView::workWidth() const
 615 {
 616         return width_;
 617 }
 618
 619
 620 void BufferView::center()
 621 {
 622         CursorSlice & bot = cursor_.bottom();
 623         lyx::pit_type const pit = bot.pit();
 624         bot.text()->redoParagraph(pit);
 625         Paragraph const & par = bot.text()->paragraphs()[pit];
 626         anchor_ref_ = pit;
 627         offset_ref_ = bv_funcs::coordOffset(cursor_, cursor_.boundary()).y_
 628                 + par.ascent() - height_ / 2;
 629 }
 630
 631
 632 FuncStatus BufferView::getStatus(FuncRequest const & cmd)
 633 {
 634         FuncStatus flag;
 635
 636         switch (cmd.action) {
 637
 638         case LFUN_UNDO:
 639                 flag.enabled(!buffer_->undostack().empty());
 640                 break;
 641         case LFUN_REDO:
 642                 flag.enabled(!buffer_->redostack().empty());
 643                 break;
 644         case LFUN_FILE_INSERT:
 645         case LFUN_FILE_INSERT_ASCII_PARA:
 646         case LFUN_FILE_INSERT_ASCII:
 647         case LFUN_BOOKMARK_SAVE:
 648                 // FIXME: Actually, these LFUNS should be moved to LyXText
 649                 flag.enabled(cursor_.inTexted());
 650                 break;
 651         case LFUN_FONT_STATE:
 652         case LFUN_LABEL_INSERT:
 653         case LFUN_PARAGRAPH_GOTO:
 654         // FIXME handle non-trivially
 655         case LFUN_OUTLINE_UP:
 656         case LFUN_OUTLINE_DOWN:
 657         case LFUN_OUTLINE_IN:
 658         case LFUN_OUTLINE_OUT:
 659         case LFUN_NOTE_NEXT:
 660         case LFUN_REFERENCE_NEXT:
 661         case LFUN_WORD_FIND:
 662         case LFUN_WORD_REPLACE:
 663         case LFUN_MARK_OFF:
 664         case LFUN_MARK_ON:
 665         case LFUN_MARK_TOGGLE:
 666         case LFUN_SCREEN_RECENTER:
 667         case LFUN_BIBTEX_DATABASE_ADD:
 668         case LFUN_BIBTEX_DATABASE_DEL:
 669         case LFUN_WORDS_COUNT:
 670         case LFUN_NEXT_INSET_TOGGLE:
 671                 flag.enabled(true);
 672                 break;
 673
 674         case LFUN_LABEL_GOTO: {
 675                 flag.enabled(!cmd.argument().empty()
 676                     || getInsetByCode<InsetRef>(cursor_, InsetBase::REF_CODE));
 677                 break;
 678         }
 679
 680         case LFUN_BOOKMARK_GOTO:
 681                 flag.enabled(isSavedPosition(convert<unsigned int>(lyx::to_utf8(cmd.argument()))));
 682                 break;
 683         case LFUN_CHANGES_TRACK:
 684                 flag.enabled(true);
 685                 flag.setOnOff(buffer_->params().tracking_changes);
 686                 break;
 687
 688         case LFUN_CHANGES_OUTPUT: {
 689                 OutputParams runparams;
 690                 LaTeXFeatures features(*buffer_, buffer_->params(), runparams);
 691                 flag.enabled(buffer_ && buffer_->params().tracking_changes
 692                         && features.isAvailable("dvipost"));
 693                 flag.setOnOff(buffer_->params().output_changes);
 694                 break;
 695         }
 696
 697         case LFUN_CHANGES_MERGE:
 698         case LFUN_CHANGE_ACCEPT: // what about these two
 699         case LFUN_CHANGE_REJECT: // what about these two
 700         case LFUN_ALL_CHANGES_ACCEPT:
 701         case LFUN_ALL_CHANGES_REJECT:
 702                 flag.enabled(buffer_ && buffer_->params().tracking_changes);
 703                 break;
 704
 705         case LFUN_BUFFER_TOGGLE_COMPRESSION: {
 706                 flag.setOnOff(buffer_->params().compressed);
 707                 break;
 708         }
 709
 710         default:
 711                 flag.enabled(false);
 712         }
 713
 714         return flag;
 715 }
 716
 717
 718 bool BufferView::dispatch(FuncRequest const & cmd)
 719 {
 720         //lyxerr << BOOST_CURRENT_FUNCTION
 721         //       << [ cmd = " << cmd << "]" << endl;
 722
 723         // Make sure that the cached BufferView is correct.
 724         lyxerr[Debug::ACTION] << BOOST_CURRENT_FUNCTION
 725                 << " action[" << cmd.action << ']'
 726                 << " arg[" << lyx::to_utf8(cmd.argument()) << ']'
 727                 << " x[" << cmd.x << ']'
 728                 << " y[" << cmd.y << ']'
 729                 << " button[" << cmd.button() << ']'
 730                 << endl;
 731
 732         LCursor & cur = cursor_;
 733
 734         switch (cmd.action) {
 735
 736         case LFUN_UNDO:
 737                 if (buffer_) {
 738                         cur.message(_("Undo"));
 739                         cur.clearSelection();
 740                         if (!textUndo(*this))
 741                                 cur.message(_("No further undo information"));
 742                         update();
 743                         switchKeyMap();
 744                 }
 745                 break;
 746
 747         case LFUN_REDO:
 748                 if (buffer_) {
 749                         cur.message(_("Redo"));
 750                         cur.clearSelection();
 751                         if (!textRedo(*this))
 752                                 cur.message(_("No further redo information"));
 753                         update();
 754                         switchKeyMap();
 755                 }
 756                 break;
 757
 758         case LFUN_FILE_INSERT:
 759                 // FIXME: We don't know the encoding of filenames
 760                 menuInsertLyXFile(lyx::to_utf8(cmd.argument()));
 761                 break;
 762
 763         case LFUN_FILE_INSERT_ASCII_PARA:
 764                 // FIXME: We don't know the encoding of filenames
 765                 insertAsciiFile(this, lyx::to_utf8(cmd.argument()), true);
 766                 break;
 767
 768         case LFUN_FILE_INSERT_ASCII:
 769                 // FIXME: We don't know the encoding of filenames
 770                 insertAsciiFile(this, lyx::to_utf8(cmd.argument()), false);
 771                 break;
 772
 773         case LFUN_FONT_STATE:
 774                 cur.message(lyx::from_utf8(cur.currentState()));
 775                 break;
 776
 777         case LFUN_BOOKMARK_SAVE:
 778                 savePosition(convert<unsigned int>(lyx::to_utf8(cmd.argument())));
 779                 break;
 780
 781         case LFUN_BOOKMARK_GOTO:
 782                 restorePosition(convert<unsigned int>(lyx::to_utf8(cmd.argument())));
 783                 break;
 784
 785         case LFUN_LABEL_GOTO: {
 786                 string label = lyx::to_utf8(cmd.argument());
 787                 if (label.empty()) {
 788                         InsetRef * inset =
 789                                 getInsetByCode<InsetRef>(cursor_,
 790                                                          InsetBase::REF_CODE);
 791                         if (inset) {
 792                                 label = inset->getContents();
 793                                 savePosition(0);
 794                         }
 795                 }
 796
 797                 if (!label.empty())
 798                         gotoLabel(label);
 799                 break;
 800         }
 801
 802         case LFUN_PARAGRAPH_GOTO: {
 803                 int const id = convert<int>(lyx::to_utf8(cmd.argument()));
 804                 ParIterator par = buffer_->getParFromID(id);
 805                 if (par == buffer_->par_iterator_end()) {
 806                         lyxerr[Debug::INFO] << "No matching paragraph found! ["
 807                                             << id << ']' << endl;
 808                         break;
 809                 } else {
 810                         lyxerr[Debug::INFO] << "Paragraph " << par->id()
 811                                             << " found." << endl;
 812                 }
 813
 814                 // Set the cursor
 815                 setCursor(makeDocIterator(par, 0));
 816
 817                 update();
 818                 switchKeyMap();
 819                 break;
 820         }
 821
 822         case LFUN_OUTLINE_UP:
 823                 lyx::toc::outline(lyx::toc::Up, cursor_);
 824                 cursor_.text()->setCursor(cursor_, cursor_.pit(), 0);
 825                 updateLabels(*buffer_);
 826                 break;
 827         case LFUN_OUTLINE_DOWN:
 828                 lyx::toc::outline(lyx::toc::Down, cursor_);
 829                 cursor_.text()->setCursor(cursor_, cursor_.pit(), 0);
 830                 updateLabels(*buffer_);
 831                 break;
 832         case LFUN_OUTLINE_IN:
 833                 lyx::toc::outline(lyx::toc::In, cursor_);
 834                 updateLabels(*buffer_);
 835                 break;
 836         case LFUN_OUTLINE_OUT:
 837                 lyx::toc::outline(lyx::toc::Out, cursor_);
 838                 updateLabels(*buffer_);
 839                 break;
 840
 841         case LFUN_NOTE_NEXT:
 842                 bv_funcs::gotoInset(this, InsetBase::NOTE_CODE, false);
 843                 break;
 844
 845         case LFUN_REFERENCE_NEXT: {
 846                 vector<InsetBase_code> tmp;
 847                 tmp.push_back(InsetBase::LABEL_CODE);
 848                 tmp.push_back(InsetBase::REF_CODE);
 849                 bv_funcs::gotoInset(this, tmp, true);
 850                 break;
 851         }
 852
 853         case LFUN_CHANGES_TRACK:
 854                 trackChanges();
 855                 break;
 856
 857         case LFUN_CHANGES_OUTPUT: {
 858                 bool const state = buffer_->params().output_changes;
 859                 buffer_->params().output_changes = !state;
 860                 break;
 861         }
 862
 863         case LFUN_CHANGES_MERGE:
 864                 if (lyx::find::findNextChange(this))
 865                         owner_->getDialogs().show("changes");
 866                 break;
 867
 868         case LFUN_ALL_CHANGES_ACCEPT: {
 869                 cursor_.reset(buffer_->inset());
 870 #ifdef WITH_WARNINGS
 871 #warning FIXME changes
 872 #endif
 873                 while (lyx::find::findNextChange(this))
 874                         getLyXText()->acceptChange(cursor_);
 875                 update();
 876                 break;
 877         }
 878
 879         case LFUN_ALL_CHANGES_REJECT: {
 880                 cursor_.reset(buffer_->inset());
 881 #ifdef WITH_WARNINGS
 882 #warning FIXME changes
 883 #endif
 884                 while (lyx::find::findNextChange(this))
 885                         getLyXText()->rejectChange(cursor_);
 886                 break;
 887         }
 888
 889         case LFUN_WORD_FIND:
 890                 lyx::find::find(this, cmd);
 891                 break;
 892
 893         case LFUN_WORD_REPLACE:
 894                 lyx::find::replace(this, cmd);
 895                 break;
 896
 897         case LFUN_MARK_OFF:
 898                 cur.clearSelection();
 899                 cur.resetAnchor();
 900                 cur.message(lyx::from_utf8(N_("Mark off")));
 901                 break;
 902
 903         case LFUN_MARK_ON:
 904                 cur.clearSelection();
 905                 cur.mark() = true;
 906                 cur.resetAnchor();
 907                 cur.message(lyx::from_utf8(N_("Mark on")));
 908                 break;
 909
 910         case LFUN_MARK_TOGGLE:
 911                 cur.clearSelection();
 912                 if (cur.mark()) {
 913                         cur.mark() = false;
 914                         cur.message(lyx::from_utf8(N_("Mark removed")));
 915                 } else {
 916                         cur.mark() = true;
 917                         cur.message(lyx::from_utf8(N_("Mark set")));
 918                 }
 919                 cur.resetAnchor();
 920                 break;
 921
 922         case LFUN_SCREEN_RECENTER:
 923                 center();
 924                 break;
 925
 926         case LFUN_BIBTEX_DATABASE_ADD: {
 927                 LCursor tmpcur = cursor_;
 928                 bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
 929                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
 930                                                 InsetBase::BIBTEX_CODE);
 931                 if (inset) {
 932                         if (inset->addDatabase(lyx::to_utf8(cmd.argument())))
 933                                 buffer_->updateBibfilesCache();
 934                 }
 935                 break;
 936         }
 937
 938         case LFUN_BIBTEX_DATABASE_DEL: {
 939                 LCursor tmpcur = cursor_;
 940                 bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
 941                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
 942                                                 InsetBase::BIBTEX_CODE);
 943                 if (inset) {
 944                         if (inset->delDatabase(lyx::to_utf8(cmd.argument())))
 945                                 buffer_->updateBibfilesCache();
 946                 }
 947                 break;
 948         }
 949
 950         case LFUN_WORDS_COUNT: {
 951                 DocIterator from, to;
 952                 if (cur.selection()) {
 953                         from = cur.selectionBegin();
 954                         to = cur.selectionEnd();
 955                 } else {
 956                         from = doc_iterator_begin(buffer_->inset());
 957                         to = doc_iterator_end(buffer_->inset());
 958                 }
 959                 int const count = countWords(from, to);
 960                 docstring message;
 961                 if (count != 1) {
 962                         if (cur.selection())
 963                                 message = bformat(_("%1$d words in selection."),
 964                                           count);
 965                                 else
 966                                         message = bformat(_("%1$d words in document."),
 967                                                           count);
 968                 }
 969                 else {
 970                         if (cur.selection())
 971                                 message = _("One word in selection.");
 972                         else
 973                                 message = _("One word in document.");
 974                 }
 975
 976                 Alert::information(_("Count words"), message);
 977         }
 978                 break;
 979
 980         case LFUN_BUFFER_TOGGLE_COMPRESSION:
 981                 // turn compression on/off
 982                 buffer_->params().compressed = !buffer_->params().compressed;
 983                 break;
 984
 985         case LFUN_NEXT_INSET_TOGGLE: {
 986                 // this is the real function we want to invoke
 987                 FuncRequest tmpcmd = FuncRequest(LFUN_INSET_TOGGLE, cmd.origin);
 988                 // if there is an inset at cursor, see whether it
 989                 // wants to toggle.
 990                 InsetBase * inset = cur.nextInset();
 991                 if (inset && inset->isActive()) {
 992                         LCursor tmpcur = cur;
 993                         tmpcur.pushLeft(*inset);
 994                         inset->dispatch(tmpcur, tmpcmd);
 995                         if (tmpcur.result().dispatched()) {
 996                                 cur.dispatched();
 997                         }
 998                 }
 999                 // if it did not work, try the underlying inset.
1000                 if (!cur.result().dispatched())
1001                         cur.dispatch(tmpcmd);
1002
1003                 if (cur.result().dispatched())
1004                         cur.clearSelection();
1005
1006                 break;
1007         }
1008
1009         default:
1010                 return false;
1011         }
1012
1013         return true;
1014 }
1015
1016
1017 docstring const BufferView::requestSelection()
1018 {
1019         if (!buffer_)
1020                 return docstring();
1021
1022         LCursor & cur = cursor_;
1023
1024         if (!cur.selection()) {
1025                 xsel_cache_.set = false;
1026                 return docstring();
1027         }
1028
1029         if (!xsel_cache_.set ||
1030             cur.top() != xsel_cache_.cursor ||
1031             cur.anchor_.top() != xsel_cache_.anchor)
1032         {
1033                 xsel_cache_.cursor = cur.top();
1034                 xsel_cache_.anchor = cur.anchor_.top();
1035                 xsel_cache_.set = cur.selection();
1036                 return cur.selectionAsString(false);
1037         }
1038         return docstring();
1039 }
1040
1041
1042 void BufferView::clearSelection()
1043 {
1044         if (buffer_) {
1045                 cursor_.clearSelection();
1046                 xsel_cache_.set = false;
1047         }
1048 }
1049
1050
1051 void BufferView::workAreaResize(int width, int height)
1052 {
1053         bool const widthChange = width != width_;
1054         bool const heightChange = height != height_;
1055
1056         // Update from work area
1057         width_ = width;
1058         height_ = height;
1059
1060         if (buffer_ && widthChange) {
1061                 // The WorkArea content needs a resize
1062                 resize();
1063         }
1064
1065         if (widthChange || heightChange)
1066                 update();
1067 }
1068
1069
1070 bool BufferView::workAreaDispatch(FuncRequest const & cmd0)
1071 {
1072         //lyxerr << BOOST_CURRENT_FUNCTION << "[ cmd0 " << cmd0 << "]" << endl;
1073
1074         // This is only called for mouse related events including
1075         // LFUN_FILE_OPEN generated by drag-and-drop.
1076         FuncRequest cmd = cmd0;
1077
1078         if (!buffer_)
1079                 return false;
1080
1081         LCursor cur(*this);
1082         cur.push(buffer_->inset());
1083         cur.selection() = cursor_.selection();
1084
1085         // Doesn't go through lyxfunc, so we need to update
1086         // the layout choice etc. ourselves
1087
1088         // E.g. Qt mouse press when no buffer
1089         if (!buffer_)
1090                 return false;
1091
1092         // Either the inset under the cursor or the
1093         // surrounding LyXText will handle this event.
1094
1095         // Build temporary cursor.
1096         cmd.y = min(max(cmd.y, -1), height_);
1097         InsetBase * inset = buffer_->text().editXY(cur, cmd.x, cmd.y);
1098         //lyxerr << BOOST_CURRENT_FUNCTION
1099         //       << " * hit inset at tip: " << inset << endl;
1100         //lyxerr << BOOST_CURRENT_FUNCTION
1101         //       << " * created temp cursor:" << cur << endl;
1102
1103         // Put anchor at the same position.
1104         cur.resetAnchor();
1105
1106         // Try to dispatch to an non-editable inset near this position
1107         // via the temp cursor. If the inset wishes to change the real
1108         // cursor it has to do so explicitly by using
1109         //  cur.bv().cursor() = cur;  (or similar)
1110         if (inset)
1111                 inset->dispatch(cur, cmd);
1112
1113         // Now dispatch to the temporary cursor. If the real cursor should
1114         // be modified, the inset's dispatch has to do so explicitly.
1115         if (!cur.result().dispatched())
1116                 cur.dispatch(cmd);
1117
1118         if (cur.result().dispatched()) {
1119                 // Redraw if requested or necessary.
1120                 if (cur.result().update())
1121                         update(Update::FitCursor | Update::Force);
1122                 else
1123                         update(Update::FitCursor | Update::MultiParSel);
1124         }
1125
1126         return true;
1127 }
1128
1129
1130 void BufferView::scroll(int lines)
1131 {
1132 //      if (!buffer_)
1133 //              return;
1134 //
1135 //      LyXText const * t = &buffer_->text();
1136 //      int const line_height = defaultRowHeight();
1137 //
1138 //      // The new absolute coordinate
1139 //      int new_top_y = top_y() + lines * line_height;
1140 //
1141 //      // Restrict to a valid value
1142 //      new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
1143 //      new_top_y = std::max(0, new_top_y);
1144 //
1145 //      scrollDocView(new_top_y);
1146 //
1147 //      // Update the scrollbar.
1148 //      workArea_->setScrollbarParams(t->height(), top_y(), defaultRowHeight());}
1149 }
1150
1151
1152 void BufferView::setCursorFromRow(int row)
1153 {
1154         int tmpid = -1;
1155         int tmppos = -1;
1156
1157         buffer_->texrow().getIdFromRow(row, tmpid, tmppos);
1158
1159         if (tmpid == -1)
1160                 buffer_->text().setCursor(cursor_, 0, 0);
1161         else
1162                 buffer_->text().setCursor(cursor_, buffer_->getParFromID(tmpid).pit(), tmppos);
1163 }
1164
1165
1166 void BufferView::gotoLabel(string const & label)
1167 {
1168         for (InsetIterator it = inset_iterator_begin(buffer_->inset()); it; ++it) {
1169                 vector<string> labels;
1170                 it->getLabelList(*buffer_, labels);
1171                 if (find(labels.begin(),labels.end(),label) != labels.end()) {
1172                         setCursor(it);
1173                         update();
1174                         return;
1175                 }
1176         }
1177 }
1178
1179
1180 LyXText * BufferView::getLyXText()
1181 {
1182         LyXText * text = cursor_.innerText();
1183         BOOST_ASSERT(text);
1184         return text;
1185 }
1186
1187
1188 LyXText const * BufferView::getLyXText() const
1189 {
1190         LyXText const * text = cursor_.innerText();
1191         BOOST_ASSERT(text);
1192         return text;
1193 }
1194
1195
1196 int BufferView::workHeight() const
1197 {
1198         return height_;
1199 }
1200
1201
1202 void BufferView::setCursor(DocIterator const & dit)
1203 {
1204         size_t const n = dit.depth();
1205         for (size_t i = 0; i < n; ++i)
1206                 dit[i].inset().edit(cursor_, true);
1207
1208         cursor_.setCursor(dit);
1209         cursor_.selection() = false;
1210 }
1211
1212
1213 void BufferView::mouseSetCursor(LCursor & cur)
1214 {
1215         BOOST_ASSERT(&cur.bv() == this);
1216
1217         // Has the cursor just left the inset?
1218         bool badcursor = false;
1219         if (&cursor_.inset() != &cur.inset())
1220                 badcursor = cursor_.inset().notifyCursorLeaves(cursor_);
1221
1222         // do the dEPM magic if needed
1223         // FIXME: move this to InsetText::notifyCursorLeaves?
1224         if (!badcursor && cursor_.inTexted())
1225                 cursor_.text()->deleteEmptyParagraphMechanism(cur, cursor_);
1226
1227         cursor_ = cur;
1228         cursor_.clearSelection();
1229         cursor_.setTargetX();
1230         finishUndo();
1231
1232 }
1233
1234
1235 void BufferView::putSelectionAt(DocIterator const & cur,
1236                                 int length, bool backwards)
1237 {
1238         cursor_.clearSelection();
1239
1240         setCursor(cur);
1241
1242         if (length) {
1243                 if (backwards) {
1244                         cursor_.pos() += length;
1245                         cursor_.setSelection(cursor_, -length);
1246                 } else
1247                         cursor_.setSelection(cursor_, length);
1248         }
1249 }
1250
1251
1252 LCursor & BufferView::cursor()
1253 {
1254         return cursor_;
1255 }
1256
1257
1258 LCursor const & BufferView::cursor() const
1259 {
1260         return cursor_;
1261 }
1262
1263
1264 lyx::pit_type BufferView::anchor_ref() const
1265 {
1266         return anchor_ref_;
1267 }
1268
1269
1270 int BufferView::offset_ref() const
1271 {
1272         return offset_ref_;
1273 }
1274
1275
1276 ViewMetricsInfo const & BufferView::viewMetricsInfo()
1277 {
1278         return metrics_info_;
1279 }
1280
1281
1282 void BufferView::updateMetrics(bool singlepar)
1283 {
1284         // Remove old position cache
1285         theCoords.clear();
1286         LyXText & buftext = buffer_->text();
1287         lyx::pit_type size = int(buftext.paragraphs().size());
1288
1289         if (anchor_ref_ > int(buftext.paragraphs().size() - 1)) {
1290                 anchor_ref_ = int(buftext.paragraphs().size() - 1);
1291                 offset_ref_ = 0;
1292         }
1293
1294         lyx::pit_type const pit = anchor_ref_;
1295         int pit1 = pit;
1296         int pit2 = pit;
1297         size_t const npit = buftext.paragraphs().size();
1298
1299         // Rebreak anchor paragraph. In Single Paragraph mode, rebreak only
1300         // the (main text, not inset!) paragraph containing the cursor.
1301         // (if this paragraph contains insets etc., rebreaking will
1302         // recursively descend)
1303         if (!singlepar || pit == cursor_.bottom().pit())
1304                 buftext.redoParagraph(pit);
1305         int y0 = buftext.getPar(pit).ascent() - offset_ref_;
1306
1307         // Redo paragraphs above anchor if necessary; again, in Single Par
1308         // mode, only if we encounter the (main text) one having the cursor.
1309         int y1 = y0;
1310         while (y1 > 0 && pit1 > 0) {
1311                 y1 -= buftext.getPar(pit1).ascent();
1312                 --pit1;
1313                 if (!singlepar || pit1 == cursor_.bottom().pit())
1314                         buftext.redoParagraph(pit1);
1315                 y1 -= buftext.getPar(pit1).descent();
1316         }
1317
1318
1319         // Take care of ascent of first line
1320         y1 -= buftext.getPar(pit1).ascent();
1321
1322         // Normalize anchor for next time
1323         anchor_ref_ = pit1;
1324         offset_ref_ = -y1;
1325
1326         // Grey at the beginning is ugly
1327         if (pit1 == 0 && y1 > 0) {
1328                 y0 -= y1;
1329                 y1 = 0;
1330                 anchor_ref_ = 0;
1331         }
1332
1333         // Redo paragraphs below the anchor if necessary. Single par mode:
1334         // only the one containing the cursor if encountered.
1335         int y2 = y0;
1336         while (y2 < height_ && pit2 < int(npit) - 1) {
1337                 y2 += buftext.getPar(pit2).descent();
1338                 ++pit2;
1339                 if (!singlepar || pit2 == cursor_.bottom().pit())
1340                         buftext.redoParagraph(pit2);
1341                 y2 += buftext.getPar(pit2).ascent();
1342         }
1343
1344         // Take care of descent of last line
1345         y2 += buftext.getPar(pit2).descent();
1346
1347         // The coordinates of all these paragraphs are correct, cache them
1348         int y = y1;
1349         CoordCache::InnerParPosCache & parPos = theCoords.parPos()[&buftext];
1350         for (lyx::pit_type pit = pit1; pit <= pit2; ++pit) {
1351                 Paragraph const & par = buftext.getPar(pit);
1352                 y += par.ascent();
1353                 parPos[pit] = Point(0, y);
1354                 if (singlepar && pit == cursor_.bottom().pit()) {
1355                         // In Single Paragraph mode, collect here the
1356                         // y1 and y2 of the (one) paragraph the cursor is in
1357                         y1 = y - par.ascent();
1358                         y2 = y + par.descent();
1359                 }
1360                 y += par.descent();
1361         }
1362
1363         if (singlepar) {
1364                 // collect cursor paragraph iter bounds
1365                 pit1 = cursor_.bottom().pit();
1366                 pit2 = cursor_.bottom().pit();
1367         }
1368
1369         lyxerr[Debug::DEBUG]
1370                 << BOOST_CURRENT_FUNCTION
1371                 << " y1: " << y1
1372                 << " y2: " << y2
1373                 << " pit1: " << pit1
1374                 << " pit2: " << pit2
1375                 << " npit: " << npit
1376                 << " singlepar: " << singlepar
1377                 << "size: " << size
1378                 << endl;
1379
1380         metrics_info_ = ViewMetricsInfo(pit1, pit2, y1, y2, singlepar, size);
1381 }
1382
1383
1384 void BufferView::menuInsertLyXFile(string const & filenm)
1385 {
1386         BOOST_ASSERT(cursor_.inTexted());
1387         string filename = filenm;
1388
1389         if (filename.empty()) {
1390                 // Launch a file browser
1391                 string initpath = lyxrc.document_path;
1392
1393                 if (buffer_) {
1394                         string const trypath = buffer_->filePath();
1395                         // If directory is writeable, use this as default.
1396                         if (isDirWriteable(trypath))
1397                                 initpath = trypath;
1398                 }
1399
1400                 FileDialog fileDlg(lyx::to_utf8(_("Select LyX document to insert")),
1401                         LFUN_FILE_INSERT,
1402                         make_pair(string(lyx::to_utf8(_("Documents|#o#O"))),
1403                                   string(lyxrc.document_path)),
1404                         make_pair(string(lyx::to_utf8(_("Examples|#E#e"))),
1405                                   string(addPath(package().system_support(), "examples"))));
1406
1407                 FileDialog::Result result =
1408                         fileDlg.open(initpath,
1409                                      FileFilterList(lyx::to_utf8(_("LyX Documents (*.lyx)"))),
1410                                      string());
1411
1412                 if (result.first == FileDialog::Later)
1413                         return;
1414
1415                 filename = result.second;
1416
1417                 // check selected filename
1418                 if (filename.empty()) {
1419                         // emit message signal.
1420                         message(_("Canceled."));
1421                         return;
1422                 }
1423         }
1424
1425         // Get absolute path of file and add ".lyx"
1426         // to the filename if necessary
1427         filename = fileSearch(string(), filename, "lyx");
1428
1429         docstring const disp_fn = makeDisplayPath(filename);
1430         // emit message signal.
1431         message(bformat(_("Inserting document %1$s..."), disp_fn));
1432
1433         docstring res;
1434         Buffer buf("", false);
1435         if (::loadLyXFile(&buf, makeAbsPath(filename))) {
1436                 ErrorList & el = buffer_->errorList("Parse");
1437                 // Copy the inserted document error list into the current buffer one.
1438                 el = buf.errorList("Parse");
1439                 lyx::cap::pasteParagraphList(cursor_, buf.paragraphs(),
1440                                              buf.params().textclass, el);
1441                 res = _("Document %1$s inserted.");
1442         } else
1443                 res = _("Could not insert document %1$s");
1444
1445         // emit message signal.
1446         message(bformat(res, disp_fn));
1447         buffer_->errors("Parse");
1448         resize();
1449 }
1450
1451
1452 void BufferView::trackChanges()
1453 {
1454         bool const tracking = buffer_->params().tracking_changes;
1455
1456         if (!tracking) {
1457                 for_each(buffer_->par_iterator_begin(),
1458                          buffer_->par_iterator_end(),
1459                          bind(&Paragraph::trackChanges, _1, Change::UNCHANGED));
1460                 buffer_->params().tracking_changes = true;
1461
1462                 // We cannot allow undos beyond the freeze point
1463                 buffer_->undostack().clear();
1464         } else {
1465                 cursor_.setCursor(doc_iterator_begin(buffer_->inset()));
1466                 if (lyx::find::findNextChange(this)) {
1467                         owner_->getDialogs().show("changes");
1468                         return;
1469                 }
1470
1471                 for_each(buffer_->par_iterator_begin(),
1472                          buffer_->par_iterator_end(),
1473                          mem_fun_ref(&Paragraph::untrackChanges));
1474
1475                 buffer_->params().tracking_changes = false;
1476         }
1477
1478         buffer_->redostack().clear();
1479 }