src/BufferView.C

   1 /**
   2  * \file BufferView.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Alfredo Braunstein
   7  * \author Lars Gullik Bjønnes
   8  * \author John Levon
   9  * \author André Pönitz
  10  * \author Jürgen Vigna
  11  *
  12  * Full author contact details are available in file CREDITS.
  13  */
  14
  15 #include <config.h>
  16
  17 #include "BufferView.h"
  18
  19 #include "buffer.h"
  20 #include "buffer_funcs.h"
  21 #include "bufferlist.h"
  22 #include "bufferparams.h"
  23 #include "coordcache.h"
  24 #include "CutAndPaste.h"
  25 #include "debug.h"
  26 #include "dispatchresult.h"
  27 #include "errorlist.h"
  28 #include "factory.h"
  29 #include "FloatList.h"
  30 #include "funcrequest.h"
  31 #include "FuncStatus.h"
  32 #include "gettext.h"
  33 #include "intl.h"
  34 #include "insetiterator.h"
  35 #include "language.h"
  36 #include "LaTeXFeatures.h"
  37 #include "lyx_cb.h" // added for Dispatch functions
  38 #include "lyx_main.h"
  39 #include "lyxfind.h"
  40 #include "lyxfunc.h"
  41 #include "lyxlayout.h"
  42 #include "lyxtext.h"
  43 #include "lyxtextclass.h"
  44 #include "lyxrc.h"
  45 #include "session.h"
  46 #include "paragraph.h"
  47 #include "paragraph_funcs.h"
  48 #include "ParagraphParameters.h"
  49 #include "pariterator.h"
  50 #include "texrow.h"
  51 #include "toc.h"
  52 #include "undo.h"
  53 #include "vspace.h"
  54 #include "WordLangTuple.h"
  55 #include "metricsinfo.h"
  56
  57 #include "insets/insetbibtex.h"
  58 #include "insets/insetcommand.h" // ChangeRefs
  59 #include "insets/insetref.h"
  60 #include "insets/insettext.h"
  61
  62 #include "frontends/Alert.h"
  63 #include "frontends/FileDialog.h"
  64 #include "frontends/FontMetrics.h"
  65
  66 #include "graphics/Previews.h"
  67
  68 #include "support/convert.h"
  69 #include "support/filefilterlist.h"
  70 #include "support/filetools.h"
  71 #include "support/package.h"
  72 #include "support/types.h"
  73
  74 #include <boost/bind.hpp>
  75 #include <boost/current_function.hpp>
  76
  77 #include <functional>
  78 #include <vector>
  79
  80
  81 namespace lyx {
  82
  83 using support::addPath;
  84 using support::bformat;
  85 using support::FileFilterList;
  86 using support::FileName;
  87 using support::fileSearch;
  88 using support::isDirWriteable;
  89 using support::isFileReadable;
  90 using support::makeDisplayPath;
  91 using support::package;
  92
  93 using std::distance;
  94 using std::endl;
  95 using std::istringstream;
  96 using std::make_pair;
  97 using std::min;
  98 using std::max;
  99 using std::mem_fun_ref;
 100 using std::string;
 101 using std::vector;
 102
 103 namespace Alert = frontend::Alert;
 104
 105 namespace {
 106
 107 /// Return an inset of this class if it exists at the current cursor position
 108 template <class T>
 109 T * getInsetByCode(LCursor & cur, InsetBase::Code code)
 110 {
 111         T * inset = 0;
 112         DocIterator it = cur;
 113         if (it.nextInset() &&
 114             it.nextInset()->lyxCode() == code) {
 115                 inset = static_cast<T*>(it.nextInset());
 116         }
 117         return inset;
 118 }
 119
 120 } // anon namespace
 121
 122
 123 BufferView::BufferView()
 124         : width_(0), height_(0), buffer_(0), wh_(0),
 125           cursor_(*this),
 126           multiparsel_cache_(false), anchor_ref_(0), offset_ref_(0),
 127           intl_(new Intl), last_inset_(0)
 128 {
 129         xsel_cache_.set = false;
 130         intl_->initKeyMapper(lyxrc.use_kbmap);
 131 }
 132
 133
 134 BufferView::~BufferView()
 135 {
 136 }
 137
 138
 139 Buffer * BufferView::buffer() const
 140 {
 141         return buffer_;
 142 }
 143
 144
 145 void BufferView::setBuffer(Buffer * b)
 146 {
 147         lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 148                             << "[ b = " << b << "]" << endl;
 149
 150         if (buffer_) {
 151                 // Save the actual cursor position and anchor inside the
 152                 // buffer so that it can be restored in case we rechange
 153                 // to this buffer later on.
 154                 buffer_->saveCursor(cursor_.selectionBegin(),
 155                                     cursor_.selectionEnd());
 156                 // current buffer is going to be switched-off, save cursor pos
 157                 LyX::ref().session().lastFilePos().save(FileName(buffer_->fileName()),
 158                         boost::tie(cursor_.pit(), cursor_.pos()) );
 159         }
 160
 161         // If we're quitting lyx, don't bother updating stuff
 162         if (quitting) {
 163                 buffer_ = 0;
 164                 return;
 165         }
 166
 167         // If we are closing current buffer, switch to the first in
 168         // buffer list.
 169         if (!b) {
 170                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 171                                     << " No Buffer!" << endl;
 172                 // We are closing the buffer, use the first buffer as current
 173                 buffer_ = theBufferList().first();
 174         } else {
 175                 // Set current buffer
 176                 buffer_ = b;
 177         }
 178
 179         // Reset old cursor
 180         cursor_ = LCursor(*this);
 181         anchor_ref_ = 0;
 182         offset_ref_ = 0;
 183
 184         if (buffer_) {
 185                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 186                                     << "Buffer addr: " << buffer_ << endl;
 187                 cursor_.push(buffer_->inset());
 188                 cursor_.resetAnchor();
 189                 buffer_->text().init(this);
 190                 buffer_->text().setCurrentFont(cursor_);
 191                 if (buffer_->getCursor().size() > 0 &&
 192                     buffer_->getAnchor().size() > 0)
 193                 {
 194                         cursor_.setCursor(buffer_->getAnchor().asDocIterator(&(buffer_->inset())));
 195                         cursor_.resetAnchor();
 196                         cursor_.setCursor(buffer_->getCursor().asDocIterator(&(buffer_->inset())));
 197                         cursor_.setSelection();
 198                 }
 199         }
 200
 201         if (buffer_)
 202                 updateMetrics(false);
 203
 204         if (buffer_ && graphics::Previews::status() != LyXRC::PREVIEW_OFF)
 205                 graphics::Previews::get().generateBufferPreviews(*buffer_);
 206 }
 207
 208
 209 bool BufferView::loadLyXFile(FileName const & filename, bool tolastfiles)
 210 {
 211         // File already open?
 212         if (theBufferList().exists(filename.absFilename())) {
 213                 docstring const file = makeDisplayPath(filename.absFilename(), 20);
 214                 docstring text = bformat(_("The document %1$s is already "
 215                                                      "loaded.\n\nDo you want to revert "
 216                                                      "to the saved version?"), file);
 217                 int const ret = Alert::prompt(_("Revert to saved document?"),
 218                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 219
 220                 if (ret != 0) {
 221                         setBuffer(theBufferList().getBuffer(filename.absFilename()));
 222                         return true;
 223                 }
 224                 // FIXME: should be LFUN_REVERT
 225                 if (!theBufferList().close(theBufferList().getBuffer(filename.absFilename()), false))
 226                         return false;
 227                 // Fall through to new load. (Asger)
 228                 buffer_ = 0;
 229         }
 230
 231         Buffer * b = 0;
 232
 233         if (isFileReadable(filename)) {
 234                 b = theBufferList().newBuffer(filename.absFilename());
 235                 if (!lyx::loadLyXFile(b, filename)) {
 236                         theBufferList().release(b);
 237                         return false;
 238                 }
 239         } else {
 240                 docstring text = bformat(_("The document %1$s does not yet "
 241                                                      "exist.\n\nDo you want to create "
 242                                                      "a new document?"), from_utf8(filename.absFilename()));
 243                 int const ret = Alert::prompt(_("Create new document?"),
 244                          text, 0, 1, _("&Create"), _("Cancel"));
 245
 246                 if (ret == 0) {
 247                         b = newFile(filename.absFilename(), string(), true);
 248                         if (!b)
 249                                 return false;
 250                 } else
 251                         return false;
 252         }
 253
 254         setBuffer(b);
 255         // Send the "errors" signal in case of parsing errors
 256         b->errors("Parse");
 257
 258         // scroll to the position when the file was last closed
 259         if (lyxrc.use_lastfilepos) {
 260                 pit_type pit;
 261                 pos_type pos;
 262                 boost::tie(pit, pos) = LyX::ref().session().lastFilePos().load(filename);
 263                 // I am not sure how to separate the following part to a function
 264                 // so I will leave this to Lars.
 265                 //
 266                 // check pit since the document may be externally changed.
 267                 if ( static_cast<size_t>(pit) < b->paragraphs().size() ) {
 268                         ParIterator it = b->par_iterator_begin();
 269                         ParIterator const end = b->par_iterator_end();
 270                         for (; it != end; ++it)
 271                                 if (it.pit() == pit) {
 272                                         // restored pos may be bigger than it->size
 273                                         setCursor(makeDocIterator(it, min(pos, it->size())));
 274                                         // No need to update the metrics if fitCursor returns false.
 275                                         if (fitCursor())
 276                                                 updateMetrics(false);
 277                                         break;
 278                                 }
 279                 }
 280         }
 281
 282         if (tolastfiles)
 283                 LyX::ref().session().lastFiles().add(FileName(b->fileName()));
 284
 285         return true;
 286 }
 287
 288
 289 void BufferView::reload()
 290 {
 291         if (theBufferList().close(buffer_, false))
 292                 loadLyXFile(FileName(buffer_->fileName()));
 293 }
 294
 295
 296 void BufferView::resize()
 297 {
 298         if (!buffer_)
 299                 return;
 300
 301         lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION << endl;
 302
 303         buffer_->text().init(this);
 304         updateMetrics(false);
 305         switchKeyMap();
 306 }
 307
 308
 309 bool BufferView::fitCursor()
 310 {
 311         if (bv_funcs::status(this, cursor_) == bv_funcs::CUR_INSIDE) {
 312                 frontend::FontMetrics const & fm =
 313                         theFontMetrics(cursor_.getFont());
 314                 int const asc = fm.maxAscent();
 315                 int const des = fm.maxDescent();
 316                 Point const p = bv_funcs::getPos(*this, cursor_, cursor_.boundary());
 317                 if (p.y_ - asc >= 0 && p.y_ + des < height_)
 318                         return false;
 319         }
 320         center();
 321         return true;
 322 }
 323
 324
 325 bool BufferView::multiParSel()
 326 {
 327         if (!cursor_.selection())
 328                 return false;
 329         bool ret = multiparsel_cache_;
 330         multiparsel_cache_ = cursor_.selBegin().pit() != cursor_.selEnd().pit();
 331         // Either this, or previous selection spans paragraphs
 332         return ret || multiparsel_cache_;
 333 }
 334
 335
 336 bool BufferView::update(Update::flags flags)
 337 {
 338         // This is close to a hot-path.
 339         if (lyxerr.debugging(Debug::DEBUG)) {
 340                 lyxerr[Debug::DEBUG]
 341                         << BOOST_CURRENT_FUNCTION
 342                         << "[fitcursor = " << (flags & Update::FitCursor)
 343                         << ", forceupdate = " << (flags & Update::Force)
 344                         << ", singlepar = " << (flags & Update::SinglePar)
 345                         << "]  buffer: " << buffer_ << endl;
 346         }
 347
 348         // Check needed to survive LyX startup
 349         if (!buffer_)
 350                 return false;
 351
 352         if (lyxerr.debugging(Debug::WORKAREA)) {
 353                 lyxerr[Debug::WORKAREA] << "BufferView::update" << std::endl;
 354         }
 355
 356         // Update macro store
 357         buffer_->buildMacros();
 358
 359         // Now do the first drawing step if needed. This consists on updating
 360         // the CoordCache in updateMetrics().
 361         // The second drawing step is done in WorkArea::redraw() if needed.
 362
 363         // Case when no explicit update is requested.
 364         if (!flags) {
 365                 // no need to redraw anything.
 366                 return false;
 367         }
 368
 369         if (flags == Update::FitCursor) {
 370                 bool const fit_cursor = fitCursor();
 371                 if (fit_cursor)
 372                         updateMetrics(false);
 373                 // tell the frontend to update the screen if needed.
 374                 return fit_cursor;
 375         }
 376
 377         bool full_metrics = flags & Update::Force;
 378         if (flags & Update::MultiParSel)
 379                 full_metrics |= multiParSel();
 380
 381         bool const single_par = !full_metrics;
 382         updateMetrics(single_par);
 383
 384         if (flags & Update::FitCursor && fitCursor())
 385                 updateMetrics(false);
 386
 387         // tell the frontend to update the screen.
 388         return true;
 389 }
 390
 391
 392 void BufferView::updateScrollbar()
 393 {
 394         if (!buffer_) {
 395                 lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION
 396                                      << " no text in updateScrollbar" << endl;
 397                 scrollbarParameters_.reset();
 398                 return;
 399         }
 400
 401         LyXText & t = buffer_->text();
 402         int const parsize = int(t.paragraphs().size() - 1);
 403         if (anchor_ref_ >  parsize)  {
 404                 anchor_ref_ = parsize;
 405                 offset_ref_ = 0;
 406         }
 407
 408         if (lyxerr.debugging(Debug::GUI)) {
 409                 lyxerr[Debug::GUI]
 410                         << BOOST_CURRENT_FUNCTION
 411                         << " Updating scrollbar: height: " << t.paragraphs().size()
 412                         << " curr par: " << cursor_.bottom().pit()
 413                         << " default height " << defaultRowHeight() << endl;
 414         }
 415
 416         // It would be better to fix the scrollbar to understand
 417         // values in [0..1] and divide everything by wh
 418
 419         // estimated average paragraph height:
 420         if (wh_ == 0)
 421                 wh_ = height_ / 4;
 422         int h = t.getPar(anchor_ref_).height();
 423
 424         // Normalize anchor/offset (MV):
 425         while (offset_ref_ > h && anchor_ref_ < parsize) {
 426                 anchor_ref_++;
 427                 offset_ref_ -= h;
 428                 h = t.getPar(anchor_ref_).height();
 429         }
 430         // Look at paragraph heights on-screen
 431         int sumh = 0;
 432         int nh = 0;
 433         for (pit_type pit = anchor_ref_; pit <= parsize; ++pit) {
 434                 if (sumh > height_)
 435                         break;
 436                 int const h2 = t.getPar(pit).height();
 437                 sumh += h2;
 438                 nh++;
 439         }
 440
 441         BOOST_ASSERT(nh);
 442         int const hav = sumh / nh;
 443         // More realistic average paragraph height
 444         if (hav > wh_)
 445                 wh_ = hav;
 446
 447         BOOST_ASSERT(h);
 448         scrollbarParameters_.height = (parsize + 1) * wh_;
 449         scrollbarParameters_.position = anchor_ref_ * wh_ + int(offset_ref_ * wh_ / float(h));
 450         scrollbarParameters_.lineScrollHeight = int(wh_ * defaultRowHeight() / float(h));
 451 }
 452
 453
 454 ScrollbarParameters const & BufferView::scrollbarParameters() const
 455 {
 456         return scrollbarParameters_;
 457 }
 458
 459
 460 void BufferView::scrollDocView(int value)
 461 {
 462         lyxerr[Debug::GUI] << BOOST_CURRENT_FUNCTION
 463                            << "[ value = " << value << "]" << endl;
 464
 465         if (!buffer_)
 466                 return;
 467
 468         LyXText & t = buffer_->text();
 469
 470         float const bar = value / float(wh_ * t.paragraphs().size());
 471
 472         anchor_ref_ = int(bar * t.paragraphs().size());
 473         if (anchor_ref_ >  int(t.paragraphs().size()) - 1)
 474                 anchor_ref_ = int(t.paragraphs().size()) - 1;
 475         t.redoParagraph(*this, anchor_ref_);
 476         int const h = t.getPar(anchor_ref_).height();
 477         offset_ref_ = int((bar * t.paragraphs().size() - anchor_ref_) * h);
 478         updateMetrics(false);
 479 }
 480
 481
 482 void BufferView::setCursorFromScrollbar()
 483 {
 484         LyXText & t = buffer_->text();
 485
 486         int const height = 2 * defaultRowHeight();
 487         int const first = height;
 488         int const last = height_ - height;
 489         LCursor & cur = cursor_;
 490
 491         bv_funcs::CurStatus st = bv_funcs::status(this, cur);
 492
 493         switch (st) {
 494         case bv_funcs::CUR_ABOVE:
 495                 t.setCursorFromCoordinates(cur, 0, first);
 496                 cur.clearSelection();
 497                 break;
 498         case bv_funcs::CUR_BELOW:
 499                 t.setCursorFromCoordinates(cur, 0, last);
 500                 cur.clearSelection();
 501                 break;
 502         case bv_funcs::CUR_INSIDE:
 503                 int const y = bv_funcs::getPos(*this, cur, cur.boundary()).y_;
 504                 int const newy = min(last, max(y, first));
 505                 if (y != newy) {
 506                         cur.reset(buffer_->inset());
 507                         t.setCursorFromCoordinates(cur, 0, newy);
 508                 }
 509         }
 510 }
 511
 512
 513 Change const BufferView::getCurrentChange() const
 514 {
 515         if (!cursor_.selection())
 516                 return Change(Change::UNCHANGED);
 517
 518         DocIterator dit = cursor_.selectionBegin();
 519         return dit.paragraph().lookupChange(dit.pos());
 520 }
 521
 522
 523 void BufferView::saveBookmark(bool persistent)
 524 {
 525         LyX::ref().session().bookmarks().save(
 526                 FileName(buffer_->fileName()),
 527                 cursor_.paragraph().id(),
 528                 cursor_.pos(),
 529                 persistent
 530         );
 531         if (persistent)
 532                 // emit message signal.
 533                 message(_("Save bookmark"));
 534 }
 535
 536
 537 void BufferView::moveToPosition(int par_id, pos_type par_pos)
 538 {
 539         cursor_.clearSelection();
 540
 541         ParIterator par = buffer_->getParFromID(par_id);
 542         if (par == buffer_->par_iterator_end())
 543                 return;
 544
 545         setCursor(makeDocIterator(par, min(par->size(), par_pos)));
 546 }
 547
 548
 549 void BufferView::switchKeyMap()
 550 {
 551         if (!lyxrc.rtl_support)
 552                 return;
 553
 554         if (getLyXText()->real_current_font.isRightToLeft()) {
 555                 if (intl_->keymap == Intl::PRIMARY)
 556                         intl_->keyMapSec();
 557         } else {
 558                 if (intl_->keymap == Intl::SECONDARY)
 559                         intl_->keyMapPrim();
 560         }
 561 }
 562
 563
 564 int BufferView::workWidth() const
 565 {
 566         return width_;
 567 }
 568
 569
 570 void BufferView::center()
 571 {
 572         CursorSlice & bot = cursor_.bottom();
 573         pit_type const pit = bot.pit();
 574         bot.text()->redoParagraph(*this, pit);
 575         Paragraph const & par = bot.text()->paragraphs()[pit];
 576         anchor_ref_ = pit;
 577         offset_ref_ = bv_funcs::coordOffset(*this, cursor_, cursor_.boundary()).y_
 578                 + par.ascent() - height_ / 2;
 579 }
 580
 581
 582 FuncStatus BufferView::getStatus(FuncRequest const & cmd)
 583 {
 584         FuncStatus flag;
 585
 586         switch (cmd.action) {
 587
 588         case LFUN_UNDO:
 589                 flag.enabled(!buffer_->undostack().empty());
 590                 break;
 591         case LFUN_REDO:
 592                 flag.enabled(!buffer_->redostack().empty());
 593                 break;
 594         case LFUN_FILE_INSERT:
 595         case LFUN_FILE_INSERT_ASCII_PARA:
 596         case LFUN_FILE_INSERT_ASCII:
 597         case LFUN_BOOKMARK_SAVE:
 598                 // FIXME: Actually, these LFUNS should be moved to LyXText
 599                 flag.enabled(cursor_.inTexted());
 600                 break;
 601         case LFUN_FONT_STATE:
 602         case LFUN_LABEL_INSERT:
 603         case LFUN_PARAGRAPH_GOTO:
 604         // FIXME handle non-trivially
 605         case LFUN_OUTLINE_UP:
 606         case LFUN_OUTLINE_DOWN:
 607         case LFUN_OUTLINE_IN:
 608         case LFUN_OUTLINE_OUT:
 609         case LFUN_NOTE_NEXT:
 610         case LFUN_REFERENCE_NEXT:
 611         case LFUN_WORD_FIND:
 612         case LFUN_WORD_REPLACE:
 613         case LFUN_MARK_OFF:
 614         case LFUN_MARK_ON:
 615         case LFUN_MARK_TOGGLE:
 616         case LFUN_SCREEN_RECENTER:
 617         case LFUN_BIBTEX_DATABASE_ADD:
 618         case LFUN_BIBTEX_DATABASE_DEL:
 619         case LFUN_WORDS_COUNT:
 620         case LFUN_NEXT_INSET_TOGGLE:
 621                 flag.enabled(true);
 622                 break;
 623
 624         case LFUN_LABEL_GOTO: {
 625                 flag.enabled(!cmd.argument().empty()
 626                     || getInsetByCode<InsetRef>(cursor_, InsetBase::REF_CODE));
 627                 break;
 628         }
 629
 630         case LFUN_CHANGES_TRACK:
 631                 flag.enabled(true);
 632                 flag.setOnOff(buffer_->params().trackChanges);
 633                 break;
 634
 635         case LFUN_CHANGES_OUTPUT: {
 636                 OutputParams runparams;
 637                 LaTeXFeatures features(*buffer_, buffer_->params(), runparams);
 638                 flag.enabled(buffer_ && features.isAvailable("dvipost"));
 639                 flag.setOnOff(buffer_->params().outputChanges);
 640                 break;
 641         }
 642
 643         case LFUN_CHANGES_MERGE:
 644         case LFUN_CHANGE_NEXT:
 645         case LFUN_ALL_CHANGES_ACCEPT:
 646         case LFUN_ALL_CHANGES_REJECT:
 647                 // TODO: context-sensitive enabling of LFUNs
 648                 // In principle, these command should only be enabled if there
 649                 // is a change in the document. However, without proper
 650                 // optimizations, this will inevitably result in poor performance.
 651                 flag.enabled(buffer_);
 652                 break;
 653
 654         case LFUN_BUFFER_TOGGLE_COMPRESSION: {
 655                 flag.setOnOff(buffer_->params().compressed);
 656                 break;
 657         }
 658
 659         default:
 660                 flag.enabled(false);
 661         }
 662
 663         return flag;
 664 }
 665
 666
 667 bool BufferView::dispatch(FuncRequest const & cmd)
 668 {
 669         //lyxerr << BOOST_CURRENT_FUNCTION
 670         //       << [ cmd = " << cmd << "]" << endl;
 671
 672         // Make sure that the cached BufferView is correct.
 673         lyxerr[Debug::ACTION] << BOOST_CURRENT_FUNCTION
 674                 << " action[" << cmd.action << ']'
 675                 << " arg[" << to_utf8(cmd.argument()) << ']'
 676                 << " x[" << cmd.x << ']'
 677                 << " y[" << cmd.y << ']'
 678                 << " button[" << cmd.button() << ']'
 679                 << endl;
 680
 681         LCursor & cur = cursor_;
 682
 683         switch (cmd.action) {
 684
 685         case LFUN_UNDO:
 686                 if (buffer_) {
 687                         cur.message(_("Undo"));
 688                         cur.clearSelection();
 689                         if (!textUndo(*this))
 690                                 cur.message(_("No further undo information"));
 691                         update();
 692                         switchKeyMap();
 693                 }
 694                 break;
 695
 696         case LFUN_REDO:
 697                 if (buffer_) {
 698                         cur.message(_("Redo"));
 699                         cur.clearSelection();
 700                         if (!textRedo(*this))
 701                                 cur.message(_("No further redo information"));
 702                         update();
 703                         switchKeyMap();
 704                 }
 705                 break;
 706
 707         case LFUN_FILE_INSERT:
 708                 // FIXME UNICODE
 709                 menuInsertLyXFile(to_utf8(cmd.argument()));
 710                 break;
 711
 712         case LFUN_FILE_INSERT_ASCII_PARA:
 713                 // FIXME UNICODE
 714                 insertAsciiFile(this, to_utf8(cmd.argument()), true);
 715                 break;
 716
 717         case LFUN_FILE_INSERT_ASCII:
 718                 // FIXME UNICODE
 719                 insertAsciiFile(this, to_utf8(cmd.argument()), false);
 720                 break;
 721
 722         case LFUN_FONT_STATE:
 723                 cur.message(cur.currentState());
 724                 break;
 725
 726         case LFUN_BOOKMARK_SAVE:
 727                 saveBookmark(convert<unsigned int>(to_utf8(cmd.argument())));
 728                 break;
 729
 730         case LFUN_LABEL_GOTO: {
 731                 docstring label = cmd.argument();
 732                 if (label.empty()) {
 733                         InsetRef * inset =
 734                                 getInsetByCode<InsetRef>(cursor_,
 735                                                          InsetBase::REF_CODE);
 736                         if (inset) {
 737                                 label = inset->getParam("reference");
 738                                 // persistent=false: use temp_bookmark
 739                                 saveBookmark(false);
 740                         }
 741                 }
 742
 743                 if (!label.empty())
 744                         gotoLabel(label);
 745                 break;
 746         }
 747
 748         case LFUN_PARAGRAPH_GOTO: {
 749                 int const id = convert<int>(to_utf8(cmd.argument()));
 750                 int i = 0;
 751                 for (Buffer * b = buffer_; i == 0 || b != buffer_; b = theBufferList().next(b)) {
 752                         ParIterator par = b->getParFromID(id);
 753                         if (par == b->par_iterator_end()) {
 754                                 lyxerr[Debug::INFO]
 755                                         << "No matching paragraph found! ["
 756                                         << id << "]." << endl;
 757                         } else {
 758                                 lyxerr[Debug::INFO]
 759                                         << "Paragraph " << par->id()
 760                                         << " found in buffer `"
 761                                         << b->fileName() << "'." << endl;
 762
 763                                 if (b == buffer_) {
 764                                         // Set the cursor
 765                                         setCursor(makeDocIterator(par, 0));
 766                                         update();
 767                                         switchKeyMap();
 768                                 } else {
 769                                         // Switch to other buffer view and resend cmd
 770                                         theLyXFunc().dispatch(FuncRequest(
 771                                                 LFUN_BUFFER_SWITCH, b->fileName()));
 772                                         theLyXFunc().dispatch(cmd);
 773                                 }
 774                                 break;
 775                         }
 776                         ++i;
 777                 }
 778                 break;
 779         }
 780
 781         case LFUN_OUTLINE_UP:
 782                 toc::outline(toc::Up, cursor_);
 783                 cursor_.text()->setCursor(cursor_, cursor_.pit(), 0);
 784                 updateLabels(*buffer_);
 785                 break;
 786         case LFUN_OUTLINE_DOWN:
 787                 toc::outline(toc::Down, cursor_);
 788                 cursor_.text()->setCursor(cursor_, cursor_.pit(), 0);
 789                 updateLabels(*buffer_);
 790                 break;
 791         case LFUN_OUTLINE_IN:
 792                 toc::outline(toc::In, cursor_);
 793                 updateLabels(*buffer_);
 794                 break;
 795         case LFUN_OUTLINE_OUT:
 796                 toc::outline(toc::Out, cursor_);
 797                 updateLabels(*buffer_);
 798                 break;
 799
 800         case LFUN_NOTE_NEXT:
 801                 bv_funcs::gotoInset(this, InsetBase::NOTE_CODE, false);
 802                 break;
 803
 804         case LFUN_REFERENCE_NEXT: {
 805                 vector<InsetBase_code> tmp;
 806                 tmp.push_back(InsetBase::LABEL_CODE);
 807                 tmp.push_back(InsetBase::REF_CODE);
 808                 bv_funcs::gotoInset(this, tmp, true);
 809                 break;
 810         }
 811
 812         case LFUN_CHANGES_TRACK:
 813                 buffer_->params().trackChanges = !buffer_->params().trackChanges;
 814                 break;
 815
 816         case LFUN_CHANGES_OUTPUT: {
 817                 buffer_->params().outputChanges = !buffer_->params().outputChanges;
 818                 break;
 819         }
 820
 821         case LFUN_CHANGE_NEXT:
 822                 findNextChange(this);
 823                 break;
 824
 825         case LFUN_CHANGES_MERGE:
 826                 if (findNextChange(this))
 827                         showDialog("changes");
 828                 break;
 829
 830         case LFUN_ALL_CHANGES_ACCEPT: {
 831                 cursor_.reset(buffer_->inset());
 832 #ifdef WITH_WARNINGS
 833 #warning FIXME changes
 834 #endif
 835                 while (findNextChange(this))
 836                         getLyXText()->acceptChange(cursor_);
 837                 update();
 838                 break;
 839         }
 840
 841         case LFUN_ALL_CHANGES_REJECT: {
 842                 cursor_.reset(buffer_->inset());
 843 #ifdef WITH_WARNINGS
 844 #warning FIXME changes
 845 #endif
 846                 while (findNextChange(this))
 847                         getLyXText()->rejectChange(cursor_);
 848                 break;
 849         }
 850
 851         case LFUN_WORD_FIND:
 852                 find(this, cmd);
 853                 break;
 854
 855         case LFUN_WORD_REPLACE:
 856                 replace(this, cmd);
 857                 break;
 858
 859         case LFUN_MARK_OFF:
 860                 cur.clearSelection();
 861                 cur.resetAnchor();
 862                 cur.message(from_utf8(N_("Mark off")));
 863                 break;
 864
 865         case LFUN_MARK_ON:
 866                 cur.clearSelection();
 867                 cur.mark() = true;
 868                 cur.resetAnchor();
 869                 cur.message(from_utf8(N_("Mark on")));
 870                 break;
 871
 872         case LFUN_MARK_TOGGLE:
 873                 cur.clearSelection();
 874                 if (cur.mark()) {
 875                         cur.mark() = false;
 876                         cur.message(from_utf8(N_("Mark removed")));
 877                 } else {
 878                         cur.mark() = true;
 879                         cur.message(from_utf8(N_("Mark set")));
 880                 }
 881                 cur.resetAnchor();
 882                 break;
 883
 884         case LFUN_SCREEN_RECENTER:
 885                 center();
 886                 break;
 887
 888         case LFUN_BIBTEX_DATABASE_ADD: {
 889                 LCursor tmpcur = cursor_;
 890                 bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
 891                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
 892                                                 InsetBase::BIBTEX_CODE);
 893                 if (inset) {
 894                         if (inset->addDatabase(to_utf8(cmd.argument())))
 895                                 buffer_->updateBibfilesCache();
 896                 }
 897                 break;
 898         }
 899
 900         case LFUN_BIBTEX_DATABASE_DEL: {
 901                 LCursor tmpcur = cursor_;
 902                 bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
 903                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
 904                                                 InsetBase::BIBTEX_CODE);
 905                 if (inset) {
 906                         if (inset->delDatabase(to_utf8(cmd.argument())))
 907                                 buffer_->updateBibfilesCache();
 908                 }
 909                 break;
 910         }
 911
 912         case LFUN_WORDS_COUNT: {
 913                 DocIterator from, to;
 914                 if (cur.selection()) {
 915                         from = cur.selectionBegin();
 916                         to = cur.selectionEnd();
 917                 } else {
 918                         from = doc_iterator_begin(buffer_->inset());
 919                         to = doc_iterator_end(buffer_->inset());
 920                 }
 921                 int const count = countWords(from, to);
 922                 docstring message;
 923                 if (count != 1) {
 924                         if (cur.selection())
 925                                 message = bformat(_("%1$d words in selection."),
 926                                           count);
 927                                 else
 928                                         message = bformat(_("%1$d words in document."),
 929                                                           count);
 930                 }
 931                 else {
 932                         if (cur.selection())
 933                                 message = _("One word in selection.");
 934                         else
 935                                 message = _("One word in document.");
 936                 }
 937
 938                 Alert::information(_("Count words"), message);
 939         }
 940                 break;
 941
 942         case LFUN_BUFFER_TOGGLE_COMPRESSION:
 943                 // turn compression on/off
 944                 buffer_->params().compressed = !buffer_->params().compressed;
 945                 break;
 946
 947         case LFUN_NEXT_INSET_TOGGLE: {
 948                 // this is the real function we want to invoke
 949                 FuncRequest tmpcmd = FuncRequest(LFUN_INSET_TOGGLE, cmd.origin);
 950                 // if there is an inset at cursor, see whether it
 951                 // wants to toggle.
 952                 InsetBase * inset = cur.nextInset();
 953                 if (inset && inset->isActive()) {
 954                         LCursor tmpcur = cur;
 955                         tmpcur.pushLeft(*inset);
 956                         inset->dispatch(tmpcur, tmpcmd);
 957                         if (tmpcur.result().dispatched()) {
 958                                 cur.dispatched();
 959                         }
 960                 }
 961                 // if it did not work, try the underlying inset.
 962                 if (!cur.result().dispatched())
 963                         cur.dispatch(tmpcmd);
 964
 965                 if (cur.result().dispatched())
 966                         cur.clearSelection();
 967
 968                 break;
 969         }
 970
 971         default:
 972                 return false;
 973         }
 974
 975         return true;
 976 }
 977
 978
 979 docstring const BufferView::requestSelection()
 980 {
 981         if (!buffer_)
 982                 return docstring();
 983
 984         LCursor & cur = cursor_;
 985
 986         if (!cur.selection()) {
 987                 xsel_cache_.set = false;
 988                 return docstring();
 989         }
 990
 991         if (!xsel_cache_.set ||
 992             cur.top() != xsel_cache_.cursor ||
 993             cur.anchor_.top() != xsel_cache_.anchor)
 994         {
 995                 xsel_cache_.cursor = cur.top();
 996                 xsel_cache_.anchor = cur.anchor_.top();
 997                 xsel_cache_.set = cur.selection();
 998                 return cur.selectionAsString(false);
 999         }
1000         return docstring();
1001 }
1002
1003
1004 void BufferView::clearSelection()
1005 {
1006         if (buffer_) {
1007                 cursor_.clearSelection();
1008                 xsel_cache_.set = false;
1009         }
1010 }
1011
1012
1013 void BufferView::workAreaResize(int width, int height)
1014 {
1015         // A resize is triggered whenever a window gets focus,
1016         // because of the shared rows() of a buffer in multiple
1017         // buffer views.
1018
1019         // Update from work area
1020         width_ = width;
1021         height_ = height;
1022
1023         if (buffer_)
1024                 resize();
1025 }
1026
1027
1028 bool BufferView::workAreaDispatch(FuncRequest const & cmd0)
1029 {
1030         //lyxerr << BOOST_CURRENT_FUNCTION << "[ cmd0 " << cmd0 << "]" << endl;
1031
1032         // This is only called for mouse related events including
1033         // LFUN_FILE_OPEN generated by drag-and-drop.
1034         FuncRequest cmd = cmd0;
1035
1036         // E.g. Qt mouse press when no buffer
1037         if (!buffer_)
1038                 return false;
1039
1040         LCursor cur(*this);
1041         cur.push(buffer_->inset());
1042         cur.selection() = cursor_.selection();
1043
1044         // Either the inset under the cursor or the
1045         // surrounding LyXText will handle this event.
1046
1047         // Build temporary cursor.
1048         cmd.y = min(max(cmd.y, -1), height_);
1049         InsetBase * inset = buffer_->text().editXY(cur, cmd.x, cmd.y);
1050
1051         //lyxerr << BOOST_CURRENT_FUNCTION
1052         //       << " * hit inset at tip: " << inset << endl;
1053         //lyxerr << BOOST_CURRENT_FUNCTION
1054         //       << " * created temp cursor:" << cur << endl;
1055
1056         // NOTE: editXY returns the top level inset of nested insets. If you happen
1057         // to move from a text (inset=0) to a text inside an inset (e.g. an opened
1058         // footnote inset, again inset=0), that inset will not be redrawn.
1059         if (cmd.action == LFUN_MOUSE_MOTION && cmd.button() == mouse_button::none) {
1060                 bool need_redraw = false;
1061
1062                 if (inset != last_inset_) {
1063                         if (last_inset_)
1064                                 need_redraw |= last_inset_->setMouseHover(false);
1065                         if (inset)
1066                                 need_redraw |= inset->setMouseHover(true);
1067                         last_inset_ = inset;
1068                 }
1069
1070                 // if last metrics update was in singlepar mode, WorkArea::redraw() will
1071                 // not expose the button for redraw. We adjust here the metrics dimension
1072                 // to enable a full redraw.
1073                 // FIXME: It is possible to redraw only the area around the button!
1074                 if (need_redraw && metrics_info_.singlepar) {
1075                         // FIXME: It should be possible to redraw only the area around
1076                         // the button by doing this:
1077                         //
1078                         //metrics_info_.singlepar = false;
1079                         //metrics_info_.y1 = ymin of button;
1080                         //metrics_info_.y2 = ymax of button;
1081                         //
1082                         // Unfortunately, rowpainter.C:paintText() does not distinguish
1083                         // between background updates and text updates. So we use the hammer
1084                         // solution for now. We could also avoid the updateMetrics() below
1085                         // by using the first and last pit of the CoordCache. Have a look
1086                         // at LyXText::getPitNearY() to see what I mean.
1087                         //
1088                         //metrics_info_.pit1 = first pit of CoordCache;
1089                         //metrics_info_.pit2 = last pit of CoordCache;
1090                         //metrics_info_.singlepar = false;
1091                         //metrics_info_.y1 = 0;
1092                         //metrics_info_.y2 = height_;
1093                         //
1094                         updateMetrics(false);
1095                 }
1096
1097                 // This event (moving without mouse click) is not passed further.
1098                 // This should be changed if it is further utilized.
1099                 return need_redraw;
1100         }
1101
1102         // Put anchor at the same position.
1103         cur.resetAnchor();
1104
1105         // Try to dispatch to an non-editable inset near this position
1106         // via the temp cursor. If the inset wishes to change the real
1107         // cursor it has to do so explicitly by using
1108         //  cur.bv().cursor() = cur;  (or similar)
1109         if (inset) {
1110                 inset->dispatch(cur, cmd);
1111         }
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         // Redraw if requested and necessary.
1119         if (cur.result().dispatched() && cur.result().update())
1120                 return update(cur.result().update());
1121
1122         return false;
1123 }
1124
1125
1126 void BufferView::scroll(int /*lines*/)
1127 {
1128 //      if (!buffer_)
1129 //              return;
1130 //
1131 //      LyXText const * t = &buffer_->text();
1132 //      int const line_height = defaultRowHeight();
1133 //
1134 //      // The new absolute coordinate
1135 //      int new_top_y = top_y() + lines * line_height;
1136 //
1137 //      // Restrict to a valid value
1138 //      new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
1139 //      new_top_y = std::max(0, new_top_y);
1140 //
1141 //      scrollDocView(new_top_y);
1142 //
1143 //      // Update the scrollbar.
1144 //      workArea_->setScrollbarParams(t->height(), top_y(), defaultRowHeight());}
1145 }
1146
1147
1148 void BufferView::setCursorFromRow(int row)
1149 {
1150         int tmpid = -1;
1151         int tmppos = -1;
1152
1153         buffer_->texrow().getIdFromRow(row, tmpid, tmppos);
1154
1155         if (tmpid == -1)
1156                 buffer_->text().setCursor(cursor_, 0, 0);
1157         else
1158                 buffer_->text().setCursor(cursor_, buffer_->getParFromID(tmpid).pit(), tmppos);
1159 }
1160
1161
1162 void BufferView::gotoLabel(docstring const & label)
1163 {
1164         for (InsetIterator it = inset_iterator_begin(buffer_->inset()); it; ++it) {
1165                 vector<docstring> labels;
1166                 it->getLabelList(*buffer_, labels);
1167                 if (std::find(labels.begin(), labels.end(), label) != labels.end()) {
1168                         setCursor(it);
1169                         update();
1170                         return;
1171                 }
1172         }
1173 }
1174
1175
1176 LyXText * BufferView::getLyXText()
1177 {
1178         LyXText * text = cursor_.innerText();
1179         BOOST_ASSERT(text);
1180         return text;
1181 }
1182
1183
1184 LyXText const * BufferView::getLyXText() const
1185 {
1186         LyXText const * text = cursor_.innerText();
1187         BOOST_ASSERT(text);
1188         return text;
1189 }
1190
1191
1192 int BufferView::workHeight() const
1193 {
1194         return height_;
1195 }
1196
1197
1198 void BufferView::setCursor(DocIterator const & dit)
1199 {
1200         size_t const n = dit.depth();
1201         for (size_t i = 0; i < n; ++i)
1202                 dit[i].inset().edit(cursor_, true);
1203
1204         cursor_.setCursor(dit);
1205         cursor_.selection() = false;
1206 }
1207
1208
1209 bool BufferView::mouseSetCursor(LCursor & cur)
1210 {
1211         BOOST_ASSERT(&cur.bv() == this);
1212
1213         // Has the cursor just left the inset?
1214         bool badcursor = false;
1215         if (&cursor_.inset() != &cur.inset())
1216                 badcursor = cursor_.inset().notifyCursorLeaves(cursor_);
1217
1218         // do the dEPM magic if needed
1219         // FIXME: move this to InsetText::notifyCursorLeaves?
1220         bool update = false;
1221         if (!badcursor && cursor_.inTexted())
1222                 update = cursor_.text()->deleteEmptyParagraphMechanism(cur, cursor_);
1223
1224         cursor_ = cur;
1225         cursor_.clearSelection();
1226         cursor_.setTargetX();
1227         finishUndo();
1228         return update;
1229 }
1230
1231
1232 void BufferView::putSelectionAt(DocIterator const & cur,
1233                                 int length, bool backwards)
1234 {
1235         cursor_.clearSelection();
1236
1237         setCursor(cur);
1238
1239         if (length) {
1240                 if (backwards) {
1241                         cursor_.pos() += length;
1242                         cursor_.setSelection(cursor_, -length);
1243                 } else
1244                         cursor_.setSelection(cursor_, length);
1245         }
1246 }
1247
1248
1249 LCursor & BufferView::cursor()
1250 {
1251         return cursor_;
1252 }
1253
1254
1255 LCursor const & BufferView::cursor() const
1256 {
1257         return cursor_;
1258 }
1259
1260
1261 pit_type BufferView::anchor_ref() const
1262 {
1263         return anchor_ref_;
1264 }
1265
1266
1267 ViewMetricsInfo const & BufferView::viewMetricsInfo()
1268 {
1269         return metrics_info_;
1270 }
1271
1272
1273 void BufferView::updateMetrics(bool singlepar)
1274 {
1275         // Clear out the position cache in case of full screen redraw.
1276         if (!singlepar)
1277                 coord_cache_.clear();
1278
1279         LyXText & buftext = buffer_->text();
1280         pit_type size = int(buftext.paragraphs().size());
1281
1282         if (anchor_ref_ > int(buftext.paragraphs().size() - 1)) {
1283                 anchor_ref_ = int(buftext.paragraphs().size() - 1);
1284                 offset_ref_ = 0;
1285         }
1286
1287         pit_type const pit = anchor_ref_;
1288         int pit1 = pit;
1289         int pit2 = pit;
1290         size_t const npit = buftext.paragraphs().size();
1291
1292         // Rebreak anchor paragraph. In Single Paragraph mode, rebreak only
1293         // the (main text, not inset!) paragraph containing the cursor.
1294         // (if this paragraph contains insets etc., rebreaking will
1295         // recursively descend)
1296         if (!singlepar || pit == cursor_.bottom().pit())
1297                 buftext.redoParagraph(*this, pit);
1298         int y0 = buftext.getPar(pit).ascent() - offset_ref_;
1299
1300         // Redo paragraphs above anchor if necessary; again, in Single Par
1301         // mode, only if we encounter the (main text) one having the cursor.
1302         int y1 = y0;
1303         while (y1 > 0 && pit1 > 0) {
1304                 y1 -= buftext.getPar(pit1).ascent();
1305                 --pit1;
1306                 if (!singlepar || pit1 == cursor_.bottom().pit())
1307                         buftext.redoParagraph(*this, pit1);
1308                 y1 -= buftext.getPar(pit1).descent();
1309         }
1310
1311
1312         // Take care of ascent of first line
1313         y1 -= buftext.getPar(pit1).ascent();
1314
1315         // Normalize anchor for next time
1316         anchor_ref_ = pit1;
1317         offset_ref_ = -y1;
1318
1319         // Grey at the beginning is ugly
1320         if (pit1 == 0 && y1 > 0) {
1321                 y0 -= y1;
1322                 y1 = 0;
1323                 anchor_ref_ = 0;
1324         }
1325
1326         // Redo paragraphs below the anchor if necessary. Single par mode:
1327         // only the one containing the cursor if encountered.
1328         int y2 = y0;
1329         while (y2 < height_ && pit2 < int(npit) - 1) {
1330                 y2 += buftext.getPar(pit2).descent();
1331                 ++pit2;
1332                 if (!singlepar || pit2 == cursor_.bottom().pit())
1333                         buftext.redoParagraph(*this, pit2);
1334                 y2 += buftext.getPar(pit2).ascent();
1335         }
1336
1337         // Take care of descent of last line
1338         y2 += buftext.getPar(pit2).descent();
1339
1340         // The coordinates of all these paragraphs are correct, cache them
1341         int y = y1;
1342         CoordCache::InnerParPosCache & parPos = coord_cache_.parPos()[&buftext];
1343         for (pit_type pit = pit1; pit <= pit2; ++pit) {
1344                 Paragraph const & par = buftext.getPar(pit);
1345                 y += par.ascent();
1346                 parPos[pit] = Point(0, y);
1347                 if (singlepar && pit == cursor_.bottom().pit()) {
1348                         // In Single Paragraph mode, collect here the
1349                         // y1 and y2 of the (one) paragraph the cursor is in
1350                         y1 = y - par.ascent();
1351                         y2 = y + par.descent();
1352                 }
1353                 y += par.descent();
1354         }
1355
1356         if (singlepar) {
1357                 // collect cursor paragraph iter bounds
1358                 pit1 = cursor_.bottom().pit();
1359                 pit2 = cursor_.bottom().pit();
1360         }
1361
1362         lyxerr[Debug::DEBUG]
1363                 << BOOST_CURRENT_FUNCTION
1364                 << " y1: " << y1
1365                 << " y2: " << y2
1366                 << " pit1: " << pit1
1367                 << " pit2: " << pit2
1368                 << " npit: " << npit
1369                 << " singlepar: " << singlepar
1370                 << "size: " << size
1371                 << endl;
1372
1373         metrics_info_ = ViewMetricsInfo(pit1, pit2, y1, y2, singlepar, size);
1374
1375         if (lyxerr.debugging(Debug::WORKAREA)) {
1376                 lyxerr[Debug::WORKAREA] << "BufferView::updateMetrics" << endl;
1377                 coord_cache_.dump();
1378         }
1379 }
1380
1381
1382 void BufferView::menuInsertLyXFile(string const & filenm)
1383 {
1384         BOOST_ASSERT(cursor_.inTexted());
1385         string filename = filenm;
1386
1387         if (filename.empty()) {
1388                 // Launch a file browser
1389                 // FIXME UNICODE
1390                 string initpath = lyxrc.document_path;
1391
1392                 if (buffer_) {
1393                         string const trypath = buffer_->filePath();
1394                         // If directory is writeable, use this as default.
1395                         if (isDirWriteable(FileName(trypath)))
1396                                 initpath = trypath;
1397                 }
1398
1399                 // FIXME UNICODE
1400                 FileDialog fileDlg(_("Select LyX document to insert"),
1401                         LFUN_FILE_INSERT,
1402                         make_pair(_("Documents|#o#O"), from_utf8(lyxrc.document_path)),
1403                         make_pair(_("Examples|#E#e"), from_utf8(addPath(package().system_support(), "examples"))));
1404
1405                 FileDialog::Result result =
1406                         fileDlg.open(from_utf8(initpath),
1407                                      FileFilterList(_("LyX Documents (*.lyx)")),
1408                                      docstring());
1409
1410                 if (result.first == FileDialog::Later)
1411                         return;
1412
1413                 // FIXME UNICODE
1414                 filename = to_utf8(result.second);
1415
1416                 // check selected filename
1417                 if (filename.empty()) {
1418                         // emit message signal.
1419                         message(_("Canceled."));
1420                         return;
1421                 }
1422         }
1423
1424         // Get absolute path of file and add ".lyx"
1425         // to the filename if necessary
1426         filename = fileSearch(string(), filename, "lyx").absFilename();
1427
1428         docstring const disp_fn = makeDisplayPath(filename);
1429         // emit message signal.
1430         message(bformat(_("Inserting document %1$s..."), disp_fn));
1431
1432         docstring res;
1433         Buffer buf("", false);
1434         if (lyx::loadLyXFile(&buf, FileName(filename))) {
1435                 ErrorList & el = buffer_->errorList("Parse");
1436                 // Copy the inserted document error list into the current buffer one.
1437                 el = buf.errorList("Parse");
1438                 recordUndo(cursor_);
1439                 cap::pasteParagraphList(cursor_, buf.paragraphs(),
1440                                              buf.params().textclass, el);
1441                 res = _("Document %1$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 } // namespace lyx