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 "bufferview_funcs.h"
  24 #include "coordcache.h"
  25 #include "CutAndPaste.h"
  26 #include "debug.h"
  27 #include "dispatchresult.h"
  28 #include "errorlist.h"
  29 #include "factory.h"
  30 #include "FloatList.h"
  31 #include "funcrequest.h"
  32 #include "FuncStatus.h"
  33 #include "gettext.h"
  34 #include "intl.h"
  35 #include "insetiterator.h"
  36 #include "language.h"
  37 #include "LaTeXFeatures.h"
  38 #include "lyx_cb.h" // added for Dispatch functions
  39 #include "lyx_main.h"
  40 #include "lyxfind.h"
  41 #include "lyxfunc.h"
  42 #include "lyxlayout.h"
  43 #include "lyxtext.h"
  44 #include "lyxtextclass.h"
  45 #include "lyxrc.h"
  46 #include "session.h"
  47 #include "paragraph.h"
  48 #include "paragraph_funcs.h"
  49 #include "ParagraphParameters.h"
  50 #include "pariterator.h"
  51 #include "texrow.h"
  52 #include "toc.h"
  53 #include "undo.h"
  54 #include "vspace.h"
  55 #include "WordLangTuple.h"
  56 #include "metricsinfo.h"
  57
  58 #include "insets/insetbibtex.h"
  59 #include "insets/insetcommand.h" // ChangeRefs
  60 #include "insets/insetref.h"
  61 #include "insets/insettext.h"
  62
  63 #include "frontends/Alert.h"
  64 #include "frontends/FileDialog.h"
  65 #include "frontends/FontMetrics.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 namespace lyx {
  83
  84 using support::addPath;
  85 using support::bformat;
  86 using support::FileFilterList;
  87 using support::FileName;
  88 using support::fileSearch;
  89 using support::isDirWriteable;
  90 using support::isFileReadable;
  91 using support::makeDisplayPath;
  92 using support::package;
  93
  94 using std::distance;
  95 using std::endl;
  96 using std::istringstream;
  97 using std::make_pair;
  98 using std::min;
  99 using std::max;
 100 using std::mem_fun_ref;
 101 using std::string;
 102 using std::vector;
 103
 104 namespace Alert = frontend::Alert;
 105
 106 namespace {
 107
 108 /// Return an inset of this class if it exists at the current cursor position
 109 template <class T>
 110 T * getInsetByCode(LCursor & cur, InsetBase::Code code)
 111 {
 112         T * inset = 0;
 113         DocIterator it = cur;
 114         if (it.nextInset() &&
 115             it.nextInset()->lyxCode() == code) {
 116                 inset = static_cast<T*>(it.nextInset());
 117         }
 118         return inset;
 119 }
 120
 121 } // anon namespace
 122
 123
 124 BufferView::BufferView()
 125         : width_(0), height_(0), buffer_(0), wh_(0),
 126           cursor_(*this),
 127           multiparsel_cache_(false), anchor_ref_(0), offset_ref_(0),
 128           intl_(new Intl), last_inset_(0)
 129 {
 130         xsel_cache_.set = false;
 131         intl_->initKeyMapper(lyxrc.use_kbmap);
 132 }
 133
 134
 135 BufferView::~BufferView()
 136 {
 137 }
 138
 139
 140 Buffer * BufferView::buffer() const
 141 {
 142         return buffer_;
 143 }
 144
 145
 146 void BufferView::setBuffer(Buffer * b)
 147 {
 148         lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 149                             << "[ b = " << b << "]" << endl;
 150
 151         if (buffer_) {
 152                 // Save the actual cursor position and anchor inside the
 153                 // buffer so that it can be restored in case we rechange
 154                 // to this buffer later on.
 155                 buffer_->saveCursor(cursor_.selectionBegin(),
 156                                     cursor_.selectionEnd());
 157                 // current buffer is going to be switched-off, save cursor pos
 158                 LyX::ref().session().lastFilePos().save(FileName(buffer_->fileName()),
 159                         boost::tie(cursor_.pit(), cursor_.pos()) );
 160         }
 161
 162         // If we're quitting lyx, don't bother updating stuff
 163         if (quitting) {
 164                 buffer_ = 0;
 165                 return;
 166         }
 167
 168         // If we are closing current buffer, switch to the first in
 169         // buffer list.
 170         if (!b) {
 171                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 172                                     << " No Buffer!" << endl;
 173                 // We are closing the buffer, use the first buffer as current
 174                 buffer_ = theBufferList().first();
 175         } else {
 176                 // Set current buffer
 177                 buffer_ = b;
 178         }
 179
 180         // Reset old cursor
 181         cursor_ = LCursor(*this);
 182         anchor_ref_ = 0;
 183         offset_ref_ = 0;
 184
 185         if (buffer_) {
 186                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 187                                     << "Buffer addr: " << buffer_ << endl;
 188                 cursor_.push(buffer_->inset());
 189                 cursor_.resetAnchor();
 190                 updateLabels(*buffer_);
 191                 buffer_->text().setCurrentFont(cursor_);
 192                 if (buffer_->getCursor().size() > 0 &&
 193                     buffer_->getAnchor().size() > 0)
 194                 {
 195                         cursor_.setCursor(buffer_->getAnchor().asDocIterator(&(buffer_->inset())));
 196                         cursor_.resetAnchor();
 197                         cursor_.setCursor(buffer_->getCursor().asDocIterator(&(buffer_->inset())));
 198                         cursor_.setSelection();
 199                 }
 200         }
 201
 202         if (buffer_)
 203                 updateMetrics(false);
 204
 205         if (buffer_ && graphics::Previews::status() != LyXRC::PREVIEW_OFF)
 206                 graphics::Previews::get().generateBufferPreviews(*buffer_);
 207 }
 208
 209
 210 bool BufferView::loadLyXFile(FileName const & filename, bool tolastfiles)
 211 {
 212         // File already open?
 213         if (theBufferList().exists(filename.absFilename())) {
 214                 docstring const file = makeDisplayPath(filename.absFilename(), 20);
 215                 docstring text = bformat(_("The document %1$s is already "
 216                                                      "loaded.\n\nDo you want to revert "
 217                                                      "to the saved version?"), file);
 218                 int const ret = Alert::prompt(_("Revert to saved document?"),
 219                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 220
 221                 if (ret != 0) {
 222                         setBuffer(theBufferList().getBuffer(filename.absFilename()));
 223                         return true;
 224                 }
 225                 // FIXME: should be LFUN_REVERT
 226                 if (!theBufferList().close(theBufferList().getBuffer(filename.absFilename()), false))
 227                         return false;
 228                 // Fall through to new load. (Asger)
 229                 buffer_ = 0;
 230         }
 231
 232         Buffer * b = 0;
 233
 234         if (isFileReadable(filename)) {
 235                 b = theBufferList().newBuffer(filename.absFilename());
 236                 if (!lyx::loadLyXFile(b, filename)) {
 237                         theBufferList().release(b);
 238                         return false;
 239                 }
 240         } else {
 241                 docstring text = bformat(_("The document %1$s does not yet "
 242                                                      "exist.\n\nDo you want to create "
 243                                                      "a new document?"), from_utf8(filename.absFilename()));
 244                 int const ret = Alert::prompt(_("Create new document?"),
 245                          text, 0, 1, _("&Create"), _("Cancel"));
 246
 247                 if (ret == 0) {
 248                         b = newFile(filename.absFilename(), string(), true);
 249                         if (!b)
 250                                 return false;
 251                 } else
 252                         return false;
 253         }
 254
 255         setBuffer(b);
 256         // Send the "errors" signal in case of parsing errors
 257         b->errors("Parse");
 258
 259         // scroll to the position when the file was last closed
 260         if (lyxrc.use_lastfilepos) {
 261                 pit_type pit;
 262                 pos_type pos;
 263                 boost::tie(pit, pos) = LyX::ref().session().lastFilePos().load(filename);
 264                 // I am not sure how to separate the following part to a function
 265                 // so I will leave this to Lars.
 266                 //
 267                 // check pit since the document may be externally changed.
 268                 if ( static_cast<size_t>(pit) < b->paragraphs().size() ) {
 269                         ParIterator it = b->par_iterator_begin();
 270                         ParIterator const end = b->par_iterator_end();
 271                         for (; it != end; ++it)
 272                                 if (it.pit() == pit) {
 273                                         // restored pos may be bigger than it->size
 274                                         setCursor(makeDocIterator(it, min(pos, it->size())));
 275                                         // No need to update the metrics if fitCursor returns false.
 276                                         if (fitCursor())
 277                                                 updateMetrics(false);
 278                                         break;
 279                                 }
 280                 }
 281         }
 282
 283         if (tolastfiles)
 284                 LyX::ref().session().lastFiles().add(FileName(b->fileName()));
 285
 286         return true;
 287 }
 288
 289
 290 void BufferView::reload()
 291 {
 292         if (theBufferList().close(buffer_, false))
 293                 loadLyXFile(FileName(buffer_->fileName()));
 294 }
 295
 296
 297 void BufferView::resize()
 298 {
 299         if (!buffer_)
 300                 return;
 301
 302         lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION << endl;
 303
 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         // last_inset_ points to the last visited inset. This pointer may become
 339         // invalid because of keyboard editing. Since all such operations
 340         // causes screen update(), I reset last_inset_ to avoid such a problem.
 341         last_inset_ = 0;
 342         // This is close to a hot-path.
 343         if (lyxerr.debugging(Debug::DEBUG)) {
 344                 lyxerr[Debug::DEBUG]
 345                         << BOOST_CURRENT_FUNCTION
 346                         << "[fitcursor = " << (flags & Update::FitCursor)
 347                         << ", forceupdate = " << (flags & Update::Force)
 348                         << ", singlepar = " << (flags & Update::SinglePar)
 349                         << "]  buffer: " << buffer_ << endl;
 350         }
 351
 352         // Check needed to survive LyX startup
 353         if (!buffer_)
 354                 return false;
 355
 356         if (lyxerr.debugging(Debug::WORKAREA)) {
 357                 lyxerr[Debug::WORKAREA] << "BufferView::update" << std::endl;
 358         }
 359
 360         // Update macro store
 361         buffer_->buildMacros();
 362
 363         // Now do the first drawing step if needed. This consists on updating
 364         // the CoordCache in updateMetrics().
 365         // The second drawing step is done in WorkArea::redraw() if needed.
 366
 367         // Case when no explicit update is requested.
 368         if (!flags) {
 369                 // no need to redraw anything.
 370                 return false;
 371         }
 372
 373         if (flags == Update::FitCursor) {
 374                 bool const fit_cursor = fitCursor();
 375                 if (fit_cursor)
 376                         updateMetrics(false);
 377                 // tell the frontend to update the screen if needed.
 378                 return fit_cursor;
 379         }
 380
 381         bool full_metrics = flags & Update::Force;
 382         if (flags & Update::MultiParSel)
 383                 full_metrics |= multiParSel();
 384
 385         bool const single_par = !full_metrics;
 386         updateMetrics(single_par);
 387
 388         if (flags & Update::FitCursor && fitCursor())
 389                 updateMetrics(false);
 390
 391         // tell the frontend to update the screen.
 392         return true;
 393 }
 394
 395
 396 void BufferView::updateScrollbar()
 397 {
 398         if (!buffer_) {
 399                 lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION
 400                                      << " no text in updateScrollbar" << endl;
 401                 scrollbarParameters_.reset();
 402                 return;
 403         }
 404
 405         LyXText & t = buffer_->text();
 406         TextMetrics & tm = text_metrics_[&t];
 407
 408         int const parsize = int(t.paragraphs().size() - 1);
 409         if (anchor_ref_ >  parsize)  {
 410                 anchor_ref_ = parsize;
 411                 offset_ref_ = 0;
 412         }
 413
 414         if (lyxerr.debugging(Debug::GUI)) {
 415                 lyxerr[Debug::GUI]
 416                         << BOOST_CURRENT_FUNCTION
 417                         << " Updating scrollbar: height: " << t.paragraphs().size()
 418                         << " curr par: " << cursor_.bottom().pit()
 419                         << " default height " << defaultRowHeight() << endl;
 420         }
 421
 422         // It would be better to fix the scrollbar to understand
 423         // values in [0..1] and divide everything by wh
 424
 425         // estimated average paragraph height:
 426         if (wh_ == 0)
 427                 wh_ = height_ / 4;
 428
 429         int h = tm.parMetrics(anchor_ref_).height();
 430
 431         // Normalize anchor/offset (MV):
 432         while (offset_ref_ > h && anchor_ref_ < parsize) {
 433                 anchor_ref_++;
 434                 offset_ref_ -= h;
 435                 h = tm.parMetrics(anchor_ref_).height();
 436         }
 437         // Look at paragraph heights on-screen
 438         int sumh = 0;
 439         int nh = 0;
 440         for (pit_type pit = anchor_ref_; pit <= parsize; ++pit) {
 441                 if (sumh > height_)
 442                         break;
 443                 int const h2 = tm.parMetrics(pit).height();
 444                 sumh += h2;
 445                 nh++;
 446         }
 447
 448         BOOST_ASSERT(nh);
 449         int const hav = sumh / nh;
 450         // More realistic average paragraph height
 451         if (hav > wh_)
 452                 wh_ = hav;
 453
 454         BOOST_ASSERT(h);
 455         scrollbarParameters_.height = (parsize + 1) * wh_;
 456         scrollbarParameters_.position = anchor_ref_ * wh_ + int(offset_ref_ * wh_ / float(h));
 457         scrollbarParameters_.lineScrollHeight = int(wh_ * defaultRowHeight() / float(h));
 458 }
 459
 460
 461 ScrollbarParameters const & BufferView::scrollbarParameters() const
 462 {
 463         return scrollbarParameters_;
 464 }
 465
 466
 467 void BufferView::scrollDocView(int value)
 468 {
 469         lyxerr[Debug::GUI] << BOOST_CURRENT_FUNCTION
 470                            << "[ value = " << value << "]" << endl;
 471
 472         if (!buffer_)
 473                 return;
 474
 475         LyXText & t = buffer_->text();
 476         TextMetrics & tm = text_metrics_[&t];
 477
 478         float const bar = value / float(wh_ * t.paragraphs().size());
 479
 480         anchor_ref_ = int(bar * t.paragraphs().size());
 481         if (anchor_ref_ >  int(t.paragraphs().size()) - 1)
 482                 anchor_ref_ = int(t.paragraphs().size()) - 1;
 483
 484         tm.redoParagraph(anchor_ref_);
 485         int const h = tm.parMetrics(anchor_ref_).height();
 486         offset_ref_ = int((bar * t.paragraphs().size() - anchor_ref_) * h);
 487         updateMetrics(false);
 488 }
 489
 490
 491 void BufferView::setCursorFromScrollbar()
 492 {
 493         LyXText & t = buffer_->text();
 494
 495         int const height = 2 * defaultRowHeight();
 496         int const first = height;
 497         int const last = height_ - height;
 498         LCursor & cur = cursor_;
 499
 500         bv_funcs::CurStatus st = bv_funcs::status(this, cur);
 501
 502         switch (st) {
 503         case bv_funcs::CUR_ABOVE:
 504                 t.setCursorFromCoordinates(cur, 0, first);
 505                 cur.clearSelection();
 506                 break;
 507         case bv_funcs::CUR_BELOW:
 508                 t.setCursorFromCoordinates(cur, 0, last);
 509                 cur.clearSelection();
 510                 break;
 511         case bv_funcs::CUR_INSIDE:
 512                 int const y = bv_funcs::getPos(*this, cur, cur.boundary()).y_;
 513                 int const newy = min(last, max(y, first));
 514                 if (y != newy) {
 515                         cur.reset(buffer_->inset());
 516                         t.setCursorFromCoordinates(cur, 0, newy);
 517                 }
 518         }
 519 }
 520
 521
 522 Change const BufferView::getCurrentChange() const
 523 {
 524         if (!cursor_.selection())
 525                 return Change(Change::UNCHANGED);
 526
 527         DocIterator dit = cursor_.selectionBegin();
 528         return dit.paragraph().lookupChange(dit.pos());
 529 }
 530
 531
 532 void BufferView::saveBookmark(bool persistent)
 533 {
 534         LyX::ref().session().bookmarks().save(
 535                 FileName(buffer_->fileName()),
 536                 cursor_.paragraph().id(),
 537                 cursor_.pos(),
 538                 persistent
 539         );
 540         if (persistent)
 541                 // emit message signal.
 542                 message(_("Save bookmark"));
 543 }
 544
 545
 546 void BufferView::moveToPosition(int par_id, pos_type par_pos)
 547 {
 548         cursor_.clearSelection();
 549
 550         ParIterator par = buffer_->getParFromID(par_id);
 551         if (par == buffer_->par_iterator_end())
 552                 return;
 553
 554         setCursor(makeDocIterator(par, min(par->size(), par_pos)));
 555 }
 556
 557
 558 void BufferView::switchKeyMap()
 559 {
 560         if (!lyxrc.rtl_support)
 561                 return;
 562
 563         if (getLyXText()->real_current_font.isRightToLeft()) {
 564                 if (intl_->keymap == Intl::PRIMARY)
 565                         intl_->keyMapSec();
 566         } else {
 567                 if (intl_->keymap == Intl::SECONDARY)
 568                         intl_->keyMapPrim();
 569         }
 570 }
 571
 572
 573 int BufferView::workWidth() const
 574 {
 575         return width_;
 576 }
 577
 578
 579 void BufferView::center()
 580 {
 581         CursorSlice & bot = cursor_.bottom();
 582         TextMetrics & tm = text_metrics_[bot.text()];
 583         pit_type const pit = bot.pit();
 584         tm.redoParagraph(pit);
 585         ParagraphMetrics const & pm = tm.parMetrics(pit);
 586         anchor_ref_ = pit;
 587         offset_ref_ = bv_funcs::coordOffset(*this, cursor_, cursor_.boundary()).y_
 588                 + pm.ascent() - height_ / 2;
 589 }
 590
 591
 592 FuncStatus BufferView::getStatus(FuncRequest const & cmd)
 593 {
 594         FuncStatus flag;
 595
 596         switch (cmd.action) {
 597
 598         case LFUN_UNDO:
 599                 flag.enabled(!buffer_->undostack().empty());
 600                 break;
 601         case LFUN_REDO:
 602                 flag.enabled(!buffer_->redostack().empty());
 603                 break;
 604         case LFUN_FILE_INSERT:
 605         case LFUN_FILE_INSERT_ASCII_PARA:
 606         case LFUN_FILE_INSERT_ASCII:
 607         case LFUN_BOOKMARK_SAVE:
 608                 // FIXME: Actually, these LFUNS should be moved to LyXText
 609                 flag.enabled(cursor_.inTexted());
 610                 break;
 611         case LFUN_FONT_STATE:
 612         case LFUN_LABEL_INSERT:
 613         case LFUN_PARAGRAPH_GOTO:
 614         // FIXME handle non-trivially
 615         case LFUN_OUTLINE_UP:
 616         case LFUN_OUTLINE_DOWN:
 617         case LFUN_OUTLINE_IN:
 618         case LFUN_OUTLINE_OUT:
 619         case LFUN_NOTE_NEXT:
 620         case LFUN_REFERENCE_NEXT:
 621         case LFUN_WORD_FIND:
 622         case LFUN_WORD_REPLACE:
 623         case LFUN_MARK_OFF:
 624         case LFUN_MARK_ON:
 625         case LFUN_MARK_TOGGLE:
 626         case LFUN_SCREEN_RECENTER:
 627         case LFUN_BIBTEX_DATABASE_ADD:
 628         case LFUN_BIBTEX_DATABASE_DEL:
 629         case LFUN_WORDS_COUNT:
 630         case LFUN_NEXT_INSET_TOGGLE:
 631                 flag.enabled(true);
 632                 break;
 633
 634         case LFUN_LABEL_GOTO: {
 635                 flag.enabled(!cmd.argument().empty()
 636                     || getInsetByCode<InsetRef>(cursor_, InsetBase::REF_CODE));
 637                 break;
 638         }
 639
 640         case LFUN_CHANGES_TRACK:
 641                 flag.enabled(true);
 642                 flag.setOnOff(buffer_->params().trackChanges);
 643                 break;
 644
 645         case LFUN_CHANGES_OUTPUT: {
 646                 OutputParams runparams;
 647                 LaTeXFeatures features(*buffer_, buffer_->params(), runparams);
 648                 flag.enabled(buffer_ && features.isAvailable("dvipost"));
 649                 flag.setOnOff(buffer_->params().outputChanges);
 650                 break;
 651         }
 652
 653         case LFUN_CHANGES_MERGE:
 654         case LFUN_CHANGE_NEXT:
 655         case LFUN_ALL_CHANGES_ACCEPT:
 656         case LFUN_ALL_CHANGES_REJECT:
 657                 // TODO: context-sensitive enabling of LFUNs
 658                 // In principle, these command should only be enabled if there
 659                 // is a change in the document. However, without proper
 660                 // optimizations, this will inevitably result in poor performance.
 661                 flag.enabled(buffer_);
 662                 break;
 663
 664         case LFUN_BUFFER_TOGGLE_COMPRESSION: {
 665                 flag.setOnOff(buffer_->params().compressed);
 666                 break;
 667         }
 668
 669         default:
 670                 flag.enabled(false);
 671         }
 672
 673         return flag;
 674 }
 675
 676
 677 bool BufferView::dispatch(FuncRequest const & cmd)
 678 {
 679         //lyxerr << BOOST_CURRENT_FUNCTION
 680         //       << [ cmd = " << cmd << "]" << endl;
 681
 682         // Make sure that the cached BufferView is correct.
 683         lyxerr[Debug::ACTION] << BOOST_CURRENT_FUNCTION
 684                 << " action[" << cmd.action << ']'
 685                 << " arg[" << to_utf8(cmd.argument()) << ']'
 686                 << " x[" << cmd.x << ']'
 687                 << " y[" << cmd.y << ']'
 688                 << " button[" << cmd.button() << ']'
 689                 << endl;
 690
 691         LCursor & cur = cursor_;
 692
 693         switch (cmd.action) {
 694
 695         case LFUN_UNDO:
 696                 if (buffer_) {
 697                         cur.message(_("Undo"));
 698                         cur.clearSelection();
 699                         if (!textUndo(*this))
 700                                 cur.message(_("No further undo information"));
 701                         update();
 702                         switchKeyMap();
 703                 }
 704                 break;
 705
 706         case LFUN_REDO:
 707                 if (buffer_) {
 708                         cur.message(_("Redo"));
 709                         cur.clearSelection();
 710                         if (!textRedo(*this))
 711                                 cur.message(_("No further redo information"));
 712                         update();
 713                         switchKeyMap();
 714                 }
 715                 break;
 716
 717         case LFUN_FILE_INSERT:
 718                 // FIXME UNICODE
 719                 menuInsertLyXFile(to_utf8(cmd.argument()));
 720                 break;
 721
 722         case LFUN_FILE_INSERT_ASCII_PARA:
 723                 // FIXME UNICODE
 724                 insertAsciiFile(this, to_utf8(cmd.argument()), true);
 725                 break;
 726
 727         case LFUN_FILE_INSERT_ASCII:
 728                 // FIXME UNICODE
 729                 insertAsciiFile(this, to_utf8(cmd.argument()), false);
 730                 break;
 731
 732         case LFUN_FONT_STATE:
 733                 cur.message(cur.currentState());
 734                 break;
 735
 736         case LFUN_BOOKMARK_SAVE:
 737                 saveBookmark(convert<unsigned int>(to_utf8(cmd.argument())));
 738                 break;
 739
 740         case LFUN_LABEL_GOTO: {
 741                 docstring label = cmd.argument();
 742                 if (label.empty()) {
 743                         InsetRef * inset =
 744                                 getInsetByCode<InsetRef>(cursor_,
 745                                                          InsetBase::REF_CODE);
 746                         if (inset) {
 747                                 label = inset->getParam("reference");
 748                                 // persistent=false: use temp_bookmark
 749                                 saveBookmark(false);
 750                         }
 751                 }
 752
 753                 if (!label.empty())
 754                         gotoLabel(label);
 755                 break;
 756         }
 757
 758         case LFUN_PARAGRAPH_GOTO: {
 759                 int const id = convert<int>(to_utf8(cmd.argument()));
 760                 int i = 0;
 761                 for (Buffer * b = buffer_; i == 0 || b != buffer_; b = theBufferList().next(b)) {
 762                         ParIterator par = b->getParFromID(id);
 763                         if (par == b->par_iterator_end()) {
 764                                 lyxerr[Debug::INFO]
 765                                         << "No matching paragraph found! ["
 766                                         << id << "]." << endl;
 767                         } else {
 768                                 lyxerr[Debug::INFO]
 769                                         << "Paragraph " << par->id()
 770                                         << " found in buffer `"
 771                                         << b->fileName() << "'." << endl;
 772
 773                                 if (b == buffer_) {
 774                                         // Set the cursor
 775                                         setCursor(makeDocIterator(par, 0));
 776                                         update();
 777                                         switchKeyMap();
 778                                 } else {
 779                                         // Switch to other buffer view and resend cmd
 780                                         theLyXFunc().dispatch(FuncRequest(
 781                                                 LFUN_BUFFER_SWITCH, b->fileName()));
 782                                         theLyXFunc().dispatch(cmd);
 783                                 }
 784                                 break;
 785                         }
 786                         ++i;
 787                 }
 788                 break;
 789         }
 790
 791         case LFUN_OUTLINE_UP:
 792                 toc::outline(toc::Up, cursor_);
 793                 cursor_.text()->setCursor(cursor_, cursor_.pit(), 0);
 794                 updateLabels(*buffer_);
 795                 break;
 796         case LFUN_OUTLINE_DOWN:
 797                 toc::outline(toc::Down, cursor_);
 798                 cursor_.text()->setCursor(cursor_, cursor_.pit(), 0);
 799                 updateLabels(*buffer_);
 800                 break;
 801         case LFUN_OUTLINE_IN:
 802                 toc::outline(toc::In, cursor_);
 803                 updateLabels(*buffer_);
 804                 break;
 805         case LFUN_OUTLINE_OUT:
 806                 toc::outline(toc::Out, cursor_);
 807                 updateLabels(*buffer_);
 808                 break;
 809
 810         case LFUN_NOTE_NEXT:
 811                 bv_funcs::gotoInset(this, InsetBase::NOTE_CODE, false);
 812                 break;
 813
 814         case LFUN_REFERENCE_NEXT: {
 815                 vector<InsetBase_code> tmp;
 816                 tmp.push_back(InsetBase::LABEL_CODE);
 817                 tmp.push_back(InsetBase::REF_CODE);
 818                 bv_funcs::gotoInset(this, tmp, true);
 819                 break;
 820         }
 821
 822         case LFUN_CHANGES_TRACK:
 823                 buffer_->params().trackChanges = !buffer_->params().trackChanges;
 824                 break;
 825
 826         case LFUN_CHANGES_OUTPUT: {
 827                 buffer_->params().outputChanges = !buffer_->params().outputChanges;
 828                 break;
 829         }
 830
 831         case LFUN_CHANGE_NEXT:
 832                 findNextChange(this);
 833                 break;
 834
 835         case LFUN_CHANGES_MERGE:
 836                 if (findNextChange(this))
 837                         showDialog("changes");
 838                 break;
 839
 840         case LFUN_ALL_CHANGES_ACCEPT: {
 841                 cursor_.reset(buffer_->inset());
 842 #ifdef WITH_WARNINGS
 843 #warning FIXME changes
 844 #endif
 845                 while (findNextChange(this))
 846                         getLyXText()->acceptChange(cursor_);
 847                 update();
 848                 break;
 849         }
 850
 851         case LFUN_ALL_CHANGES_REJECT: {
 852                 cursor_.reset(buffer_->inset());
 853 #ifdef WITH_WARNINGS
 854 #warning FIXME changes
 855 #endif
 856                 while (findNextChange(this))
 857                         getLyXText()->rejectChange(cursor_);
 858                 break;
 859         }
 860
 861         case LFUN_WORD_FIND:
 862                 find(this, cmd);
 863                 break;
 864
 865         case LFUN_WORD_REPLACE:
 866                 replace(this, cmd);
 867                 break;
 868
 869         case LFUN_MARK_OFF:
 870                 cur.clearSelection();
 871                 cur.resetAnchor();
 872                 cur.message(from_utf8(N_("Mark off")));
 873                 break;
 874
 875         case LFUN_MARK_ON:
 876                 cur.clearSelection();
 877                 cur.mark() = true;
 878                 cur.resetAnchor();
 879                 cur.message(from_utf8(N_("Mark on")));
 880                 break;
 881
 882         case LFUN_MARK_TOGGLE:
 883                 cur.clearSelection();
 884                 if (cur.mark()) {
 885                         cur.mark() = false;
 886                         cur.message(from_utf8(N_("Mark removed")));
 887                 } else {
 888                         cur.mark() = true;
 889                         cur.message(from_utf8(N_("Mark set")));
 890                 }
 891                 cur.resetAnchor();
 892                 break;
 893
 894         case LFUN_SCREEN_RECENTER:
 895                 center();
 896                 break;
 897
 898         case LFUN_BIBTEX_DATABASE_ADD: {
 899                 LCursor tmpcur = cursor_;
 900                 bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
 901                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
 902                                                 InsetBase::BIBTEX_CODE);
 903                 if (inset) {
 904                         if (inset->addDatabase(to_utf8(cmd.argument())))
 905                                 buffer_->updateBibfilesCache();
 906                 }
 907                 break;
 908         }
 909
 910         case LFUN_BIBTEX_DATABASE_DEL: {
 911                 LCursor tmpcur = cursor_;
 912                 bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
 913                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
 914                                                 InsetBase::BIBTEX_CODE);
 915                 if (inset) {
 916                         if (inset->delDatabase(to_utf8(cmd.argument())))
 917                                 buffer_->updateBibfilesCache();
 918                 }
 919                 break;
 920         }
 921
 922         case LFUN_WORDS_COUNT: {
 923                 DocIterator from, to;
 924                 if (cur.selection()) {
 925                         from = cur.selectionBegin();
 926                         to = cur.selectionEnd();
 927                 } else {
 928                         from = doc_iterator_begin(buffer_->inset());
 929                         to = doc_iterator_end(buffer_->inset());
 930                 }
 931                 int const count = countWords(from, to);
 932                 docstring message;
 933                 if (count != 1) {
 934                         if (cur.selection())
 935                                 message = bformat(_("%1$d words in selection."),
 936                                           count);
 937                                 else
 938                                         message = bformat(_("%1$d words in document."),
 939                                                           count);
 940                 }
 941                 else {
 942                         if (cur.selection())
 943                                 message = _("One word in selection.");
 944                         else
 945                                 message = _("One word in document.");
 946                 }
 947
 948                 Alert::information(_("Count words"), message);
 949         }
 950                 break;
 951
 952         case LFUN_BUFFER_TOGGLE_COMPRESSION:
 953                 // turn compression on/off
 954                 buffer_->params().compressed = !buffer_->params().compressed;
 955                 break;
 956
 957         case LFUN_NEXT_INSET_TOGGLE: {
 958                 // this is the real function we want to invoke
 959                 FuncRequest tmpcmd = FuncRequest(LFUN_INSET_TOGGLE, cmd.origin);
 960                 // if there is an inset at cursor, see whether it
 961                 // wants to toggle.
 962                 InsetBase * inset = cur.nextInset();
 963                 if (inset && inset->isActive()) {
 964                         LCursor tmpcur = cur;
 965                         tmpcur.pushLeft(*inset);
 966                         inset->dispatch(tmpcur, tmpcmd);
 967                         if (tmpcur.result().dispatched()) {
 968                                 cur.dispatched();
 969                         }
 970                 }
 971                 // if it did not work, try the underlying inset.
 972                 if (!cur.result().dispatched())
 973                         cur.dispatch(tmpcmd);
 974
 975                 if (cur.result().dispatched())
 976                         cur.clearSelection();
 977
 978                 break;
 979         }
 980
 981         default:
 982                 return false;
 983         }
 984
 985         return true;
 986 }
 987
 988
 989 docstring const BufferView::requestSelection()
 990 {
 991         if (!buffer_)
 992                 return docstring();
 993
 994         LCursor & cur = cursor_;
 995
 996         if (!cur.selection()) {
 997                 xsel_cache_.set = false;
 998                 return docstring();
 999         }
1000
1001         if (!xsel_cache_.set ||
1002             cur.top() != xsel_cache_.cursor ||
1003             cur.anchor_.top() != xsel_cache_.anchor)
1004         {
1005                 xsel_cache_.cursor = cur.top();
1006                 xsel_cache_.anchor = cur.anchor_.top();
1007                 xsel_cache_.set = cur.selection();
1008                 return cur.selectionAsString(false);
1009         }
1010         return docstring();
1011 }
1012
1013
1014 void BufferView::clearSelection()
1015 {
1016         if (buffer_) {
1017                 cursor_.clearSelection();
1018                 xsel_cache_.set = false;
1019                 // The buffer did not really change, but this causes the
1020                 // redraw we need because we cleared the selection above.
1021                 buffer_->changed();
1022         }
1023 }
1024
1025
1026 void BufferView::workAreaResize(int width, int height)
1027 {
1028         // Update from work area
1029         width_ = width;
1030         height_ = height;
1031
1032         // The complete text metrics will be redone.
1033         text_metrics_.clear();
1034
1035         if (buffer_)
1036                 resize();
1037 }
1038
1039
1040 bool BufferView::workAreaDispatch(FuncRequest const & cmd0)
1041 {
1042         //lyxerr << BOOST_CURRENT_FUNCTION << "[ cmd0 " << cmd0 << "]" << endl;
1043
1044         // This is only called for mouse related events including
1045         // LFUN_FILE_OPEN generated by drag-and-drop.
1046         FuncRequest cmd = cmd0;
1047
1048         // E.g. Qt mouse press when no buffer
1049         if (!buffer_)
1050                 return false;
1051
1052         LCursor cur(*this);
1053         cur.push(buffer_->inset());
1054         cur.selection() = cursor_.selection();
1055
1056         // Either the inset under the cursor or the
1057         // surrounding LyXText will handle this event.
1058
1059         // Build temporary cursor.
1060         cmd.y = min(max(cmd.y, -1), height_);
1061         InsetBase * inset = buffer_->text().editXY(cur, cmd.x, cmd.y);
1062
1063         //lyxerr << BOOST_CURRENT_FUNCTION
1064         //       << " * hit inset at tip: " << inset << endl;
1065         //lyxerr << BOOST_CURRENT_FUNCTION
1066         //       << " * created temp cursor:" << cur << endl;
1067
1068         // NOTE: editXY returns the top level inset of nested insets. If you happen
1069         // to move from a text (inset=0) to a text inside an inset (e.g. an opened
1070         // footnote inset, again inset=0), that inset will not be redrawn.
1071         if (cmd.action == LFUN_MOUSE_MOTION && cmd.button() == mouse_button::none) {
1072                 bool need_redraw = false;
1073
1074                 if (inset != last_inset_) {
1075                         if (last_inset_)
1076                                 need_redraw |= last_inset_->setMouseHover(false);
1077                         if (inset)
1078                                 need_redraw |= inset->setMouseHover(true);
1079                         last_inset_ = inset;
1080                 }
1081
1082                 // if last metrics update was in singlepar mode, WorkArea::redraw() will
1083                 // not expose the button for redraw. We adjust here the metrics dimension
1084                 // to enable a full redraw.
1085                 // FIXME: It is possible to redraw only the area around the button!
1086                 if (need_redraw && metrics_info_.singlepar) {
1087                         // FIXME: It should be possible to redraw only the area around
1088                         // the button by doing this:
1089                         //
1090                         //metrics_info_.singlepar = false;
1091                         //metrics_info_.y1 = ymin of button;
1092                         //metrics_info_.y2 = ymax of button;
1093                         //
1094                         // Unfortunately, rowpainter.C:paintText() does not distinguish
1095                         // between background updates and text updates. So we use the hammer
1096                         // solution for now. We could also avoid the updateMetrics() below
1097                         // by using the first and last pit of the CoordCache. Have a look
1098                         // at LyXText::getPitNearY() to see what I mean.
1099                         //
1100                         //metrics_info_.pit1 = first pit of CoordCache;
1101                         //metrics_info_.pit2 = last pit of CoordCache;
1102                         //metrics_info_.singlepar = false;
1103                         //metrics_info_.y1 = 0;
1104                         //metrics_info_.y2 = height_;
1105                         //
1106                         updateMetrics(false);
1107                 }
1108
1109                 // This event (moving without mouse click) is not passed further.
1110                 // This should be changed if it is further utilized.
1111                 return need_redraw;
1112         }
1113
1114         // Put anchor at the same position.
1115         cur.resetAnchor();
1116
1117         // Try to dispatch to an non-editable inset near this position
1118         // via the temp cursor. If the inset wishes to change the real
1119         // cursor it has to do so explicitly by using
1120         //  cur.bv().cursor() = cur;  (or similar)
1121         if (inset) {
1122                 inset->dispatch(cur, cmd);
1123         }
1124
1125         // Now dispatch to the temporary cursor. If the real cursor should
1126         // be modified, the inset's dispatch has to do so explicitly.
1127         if (!cur.result().dispatched())
1128                 cur.dispatch(cmd);
1129
1130         // Redraw if requested and necessary.
1131         if (cur.result().dispatched() && cur.result().update())
1132                 return update(cur.result().update());
1133
1134         return false;
1135 }
1136
1137
1138 void BufferView::scroll(int /*lines*/)
1139 {
1140 //      if (!buffer_)
1141 //              return;
1142 //
1143 //      LyXText const * t = &buffer_->text();
1144 //      int const line_height = defaultRowHeight();
1145 //
1146 //      // The new absolute coordinate
1147 //      int new_top_y = top_y() + lines * line_height;
1148 //
1149 //      // Restrict to a valid value
1150 //      new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
1151 //      new_top_y = std::max(0, new_top_y);
1152 //
1153 //      scrollDocView(new_top_y);
1154 //
1155 }
1156
1157
1158 void BufferView::setCursorFromRow(int row)
1159 {
1160         int tmpid = -1;
1161         int tmppos = -1;
1162
1163         buffer_->texrow().getIdFromRow(row, tmpid, tmppos);
1164
1165         if (tmpid == -1)
1166                 buffer_->text().setCursor(cursor_, 0, 0);
1167         else
1168                 buffer_->text().setCursor(cursor_, buffer_->getParFromID(tmpid).pit(), tmppos);
1169 }
1170
1171
1172 void BufferView::gotoLabel(docstring const & label)
1173 {
1174         for (InsetIterator it = inset_iterator_begin(buffer_->inset()); it; ++it) {
1175                 vector<docstring> labels;
1176                 it->getLabelList(*buffer_, labels);
1177                 if (std::find(labels.begin(), labels.end(), label) != labels.end()) {
1178                         setCursor(it);
1179                         update();
1180                         return;
1181                 }
1182         }
1183 }
1184
1185
1186 LyXText * BufferView::getLyXText()
1187 {
1188         LyXText * text = cursor_.innerText();
1189         BOOST_ASSERT(text);
1190         return text;
1191 }
1192
1193
1194 LyXText const * BufferView::getLyXText() const
1195 {
1196         LyXText const * text = cursor_.innerText();
1197         BOOST_ASSERT(text);
1198         return text;
1199 }
1200
1201
1202 TextMetrics const & BufferView::textMetrics(LyXText const * t) const
1203 {
1204         return const_cast<BufferView *>(this)->textMetrics(t);
1205 }
1206
1207
1208 TextMetrics & BufferView::textMetrics(LyXText const * t)
1209 {
1210         TextMetricsCache::iterator tmc_it  = text_metrics_.find(t);
1211         if (tmc_it == text_metrics_.end()) {
1212                 tmc_it = text_metrics_.insert(
1213                         make_pair(t, TextMetrics(this, const_cast<LyXText *>(t)))).first;
1214         }
1215         return tmc_it->second;
1216 }
1217
1218
1219 ParagraphMetrics const & BufferView::parMetrics(LyXText const * t,
1220                 pit_type pit) const
1221 {
1222         return textMetrics(t).parMetrics(pit);
1223 }
1224
1225
1226 int BufferView::workHeight() const
1227 {
1228         return height_;
1229 }
1230
1231
1232 void BufferView::setCursor(DocIterator const & dit)
1233 {
1234         size_t const n = dit.depth();
1235         for (size_t i = 0; i < n; ++i)
1236                 dit[i].inset().edit(cursor_, true);
1237
1238         cursor_.setCursor(dit);
1239         cursor_.selection() = false;
1240 }
1241
1242
1243 bool BufferView::checkDepm(LCursor & cur, LCursor & old)
1244 {
1245         // Would be wrong to delete anything if we have a selection.
1246         if (cur.selection())
1247                 return false;
1248
1249         bool need_anchor_change = false;
1250         bool changed = cursor_.text()->deleteEmptyParagraphMechanism(cur, old,
1251                 need_anchor_change);
1252
1253         if (need_anchor_change)
1254                 cur.resetAnchor();
1255
1256         if (!changed)
1257                 return false;
1258
1259         updateMetrics(false);
1260         buffer_->changed();
1261         return true;
1262 }
1263
1264
1265 bool BufferView::mouseSetCursor(LCursor & cur)
1266 {
1267         BOOST_ASSERT(&cur.bv() == this);
1268
1269         // Has the cursor just left the inset?
1270         bool badcursor = false;
1271         if (&cursor_.inset() != &cur.inset())
1272                 badcursor = cursor_.inset().notifyCursorLeaves(cursor_);
1273
1274         // do the dEPM magic if needed
1275         // FIXME: move this to InsetText::notifyCursorLeaves?
1276         bool update = false;
1277         if (!badcursor && cursor_.inTexted())
1278                 checkDepm(cur, cursor_);
1279
1280         cursor_ = cur;
1281         cursor_.clearSelection();
1282         cursor_.setTargetX();
1283         finishUndo();
1284         return update;
1285 }
1286
1287
1288 void BufferView::putSelectionAt(DocIterator const & cur,
1289                                 int length, bool backwards)
1290 {
1291         cursor_.clearSelection();
1292
1293         setCursor(cur);
1294
1295         if (length) {
1296                 if (backwards) {
1297                         cursor_.pos() += length;
1298                         cursor_.setSelection(cursor_, -length);
1299                 } else
1300                         cursor_.setSelection(cursor_, length);
1301         }
1302 }
1303
1304
1305 LCursor & BufferView::cursor()
1306 {
1307         return cursor_;
1308 }
1309
1310
1311 LCursor const & BufferView::cursor() const
1312 {
1313         return cursor_;
1314 }
1315
1316
1317 pit_type BufferView::anchor_ref() const
1318 {
1319         return anchor_ref_;
1320 }
1321
1322
1323 ViewMetricsInfo const & BufferView::viewMetricsInfo()
1324 {
1325         return metrics_info_;
1326 }
1327
1328
1329 // FIXME: We should split-up updateMetrics() for the singlepar case.
1330 void BufferView::updateMetrics(bool singlepar)
1331 {
1332         LyXText & buftext = buffer_->text();
1333         TextMetrics & tm = textMetrics(&buftext);
1334         pit_type size = int(buftext.paragraphs().size());
1335
1336         if (anchor_ref_ > int(buftext.paragraphs().size() - 1)) {
1337                 anchor_ref_ = int(buftext.paragraphs().size() - 1);
1338                 offset_ref_ = 0;
1339         }
1340
1341         // If the paragraph metrics has changed, we can not
1342         // use the singlepar optimisation.
1343         if (singlepar
1344                 // In Single Paragraph mode, rebreak only
1345                 // the (main text, not inset!) paragraph containing the cursor.
1346                 // (if this paragraph contains insets etc., rebreaking will
1347                 // recursively descend)
1348                 && tm.redoParagraph(cursor_.bottom().pit()))
1349                 singlepar = false;
1350
1351         pit_type const pit = anchor_ref_;
1352         int pit1 = pit;
1353         int pit2 = pit;
1354         size_t const npit = buftext.paragraphs().size();
1355
1356         // Rebreak anchor paragraph.
1357         if (!singlepar)
1358                 tm.redoParagraph(pit);
1359
1360         // Clear out the position cache in case of full screen redraw.
1361         if (!singlepar)
1362                 coord_cache_.clear();
1363
1364         int y0 = tm.parMetrics(pit).ascent() - offset_ref_;
1365
1366         // Redo paragraphs above anchor if necessary.
1367         int y1 = y0;
1368         while (y1 > 0 && pit1 > 0) {
1369                 y1 -= tm.parMetrics(pit1).ascent();
1370                 --pit1;
1371                 if (!singlepar)
1372                         tm.redoParagraph(pit1);
1373                 y1 -= tm.parMetrics(pit1).descent();
1374         }
1375
1376
1377         // Take care of ascent of first line
1378         y1 -= tm.parMetrics(pit1).ascent();
1379
1380         // Normalize anchor for next time
1381         anchor_ref_ = pit1;
1382         offset_ref_ = -y1;
1383
1384         // Grey at the beginning is ugly
1385         if (pit1 == 0 && y1 > 0) {
1386                 y0 -= y1;
1387                 y1 = 0;
1388                 anchor_ref_ = 0;
1389         }
1390
1391         // Redo paragraphs below the anchor if necessary.
1392         int y2 = y0;
1393         while (y2 < height_ && pit2 < int(npit) - 1) {
1394                 y2 += tm.parMetrics(pit2).descent();
1395                 ++pit2;
1396                 if (!singlepar)
1397                         tm.redoParagraph(pit2);
1398                 y2 += tm.parMetrics(pit2).ascent();
1399         }
1400
1401         // Take care of descent of last line
1402         y2 += tm.parMetrics(pit2).descent();
1403
1404         // The coordinates of all these paragraphs are correct, cache them
1405         int y = y1;
1406         CoordCache::InnerParPosCache & parPos = coord_cache_.parPos()[&buftext];
1407         for (pit_type pit = pit1; pit <= pit2; ++pit) {
1408                 ParagraphMetrics const & pm = tm.parMetrics(pit);
1409                 y += pm.ascent();
1410                 parPos[pit] = Point(0, y);
1411                 if (singlepar && pit == cursor_.bottom().pit()) {
1412                         // In Single Paragraph mode, collect here the
1413                         // y1 and y2 of the (one) paragraph the cursor is in
1414                         y1 = y - pm.ascent();
1415                         y2 = y + pm.descent();
1416                 }
1417                 y += pm.descent();
1418         }
1419
1420         if (singlepar) {
1421                 // collect cursor paragraph iter bounds
1422                 pit1 = cursor_.bottom().pit();
1423                 pit2 = cursor_.bottom().pit();
1424         }
1425
1426         lyxerr[Debug::DEBUG]
1427                 << BOOST_CURRENT_FUNCTION
1428                 << " y1: " << y1
1429                 << " y2: " << y2
1430                 << " pit1: " << pit1
1431                 << " pit2: " << pit2
1432                 << " npit: " << npit
1433                 << " singlepar: " << singlepar
1434                 << "size: " << size
1435                 << endl;
1436
1437         metrics_info_ = ViewMetricsInfo(pit1, pit2, y1, y2, singlepar, size);
1438
1439         if (lyxerr.debugging(Debug::WORKAREA)) {
1440                 lyxerr[Debug::WORKAREA] << "BufferView::updateMetrics" << endl;
1441                 coord_cache_.dump();
1442         }
1443 }
1444
1445
1446 void BufferView::menuInsertLyXFile(string const & filenm)
1447 {
1448         BOOST_ASSERT(cursor_.inTexted());
1449         string filename = filenm;
1450
1451         if (filename.empty()) {
1452                 // Launch a file browser
1453                 // FIXME UNICODE
1454                 string initpath = lyxrc.document_path;
1455
1456                 if (buffer_) {
1457                         string const trypath = buffer_->filePath();
1458                         // If directory is writeable, use this as default.
1459                         if (isDirWriteable(FileName(trypath)))
1460                                 initpath = trypath;
1461                 }
1462
1463                 // FIXME UNICODE
1464                 FileDialog fileDlg(_("Select LyX document to insert"),
1465                         LFUN_FILE_INSERT,
1466                         make_pair(_("Documents|#o#O"), from_utf8(lyxrc.document_path)),
1467                         make_pair(_("Examples|#E#e"), from_utf8(addPath(package().system_support(), "examples"))));
1468
1469                 FileDialog::Result result =
1470                         fileDlg.open(from_utf8(initpath),
1471                                      FileFilterList(_("LyX Documents (*.lyx)")),
1472                                      docstring());
1473
1474                 if (result.first == FileDialog::Later)
1475                         return;
1476
1477                 // FIXME UNICODE
1478                 filename = to_utf8(result.second);
1479
1480                 // check selected filename
1481                 if (filename.empty()) {
1482                         // emit message signal.
1483                         message(_("Canceled."));
1484                         return;
1485                 }
1486         }
1487
1488         // Get absolute path of file and add ".lyx"
1489         // to the filename if necessary
1490         filename = fileSearch(string(), filename, "lyx").absFilename();
1491
1492         docstring const disp_fn = makeDisplayPath(filename);
1493         // emit message signal.
1494         message(bformat(_("Inserting document %1$s..."), disp_fn));
1495
1496         docstring res;
1497         Buffer buf("", false);
1498         if (lyx::loadLyXFile(&buf, FileName(filename))) {
1499                 ErrorList & el = buffer_->errorList("Parse");
1500                 // Copy the inserted document error list into the current buffer one.
1501                 el = buf.errorList("Parse");
1502                 recordUndo(cursor_);
1503                 cap::pasteParagraphList(cursor_, buf.paragraphs(),
1504                                              buf.params().textclass, el);
1505                 res = _("Document %1$s inserted.");
1506         } else
1507                 res = _("Could not insert document %1$s");
1508
1509         // emit message signal.
1510         message(bformat(res, disp_fn));
1511         buffer_->errors("Parse");
1512         resize();
1513 }
1514
1515 } // namespace lyx