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