src/BufferView.cpp

   1 /**
   2  * \file BufferView.cpp
   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 "Cursor.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.h"
  39 #include "lyxfind.h"
  40 #include "LyXFunc.h"
  41 #include "Layout.h"
  42 #include "LyXRC.h"
  43 #include "MetricsInfo.h"
  44 #include "Paragraph.h"
  45 #include "paragraph_funcs.h"
  46 #include "ParagraphParameters.h"
  47 #include "ParIterator.h"
  48 #include "Session.h"
  49 #include "Text.h"
  50 #include "TextClass.h"
  51 #include "TextMetrics.h"
  52 #include "TexRow.h"
  53 #include "VSpace.h"
  54 #include "WordLangTuple.h"
  55
  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/Delegates.h"
  64 #include "frontends/FileDialog.h"
  65 #include "frontends/FontMetrics.h"
  66 #include "frontends/Painter.h"
  67 #include "frontends/Selection.h"
  68
  69 #include "graphics/Previews.h"
  70
  71 #include "support/convert.h"
  72 #include "support/FileFilterList.h"
  73 #include "support/filetools.h"
  74 #include "support/Package.h"
  75 #include "support/types.h"
  76 #include "support/fs_extras.h"
  77
  78 #include <boost/bind.hpp>
  79 #include <boost/current_function.hpp>
  80 #include <boost/next_prior.hpp>
  81 #include <boost/filesystem/operations.hpp>
  82
  83 #include <cerrno>
  84 #include <fstream>
  85 #include <functional>
  86 #include <vector>
  87
  88 using std::distance;
  89 using std::endl;
  90 using std::ifstream;
  91 using std::istringstream;
  92 using std::istream_iterator;
  93 using std::make_pair;
  94 using std::min;
  95 using std::max;
  96 using std::mem_fun_ref;
  97 using std::string;
  98 using std::vector;
  99
 100 namespace fs = boost::filesystem;
 101
 102 namespace lyx {
 103
 104 using support::addPath;
 105 using support::bformat;
 106 using support::FileFilterList;
 107 using support::FileName;
 108 using support::fileSearch;
 109 using support::makeDisplayPath;
 110 using support::makeAbsPath;
 111 using support::package;
 112
 113 namespace Alert = frontend::Alert;
 114
 115 namespace {
 116
 117 /// Return an inset of this class if it exists at the current cursor position
 118 template <class T>
 119 T * getInsetByCode(Cursor const & cur, InsetCode code)
 120 {
 121         DocIterator it = cur;
 122         Inset * inset = it.nextInset();
 123         if (inset && inset->lyxCode() == code)
 124                 return static_cast<T*>(inset);
 125         return 0;
 126 }
 127
 128
 129 bool findInset(DocIterator & dit, vector<InsetCode> const & codes,
 130         bool same_content);
 131
 132 bool findNextInset(DocIterator & dit, vector<InsetCode> const & codes,
 133         string const & contents)
 134 {
 135         DocIterator tmpdit = dit;
 136
 137         while (tmpdit) {
 138                 Inset const * inset = tmpdit.nextInset();
 139                 if (inset
 140                     && find(codes.begin(), codes.end(), inset->lyxCode()) != codes.end()
 141                     && (contents.empty() ||
 142                     static_cast<InsetCommand const *>(inset)->getContents() == contents)) {
 143                         dit = tmpdit;
 144                         return true;
 145                 }
 146                 tmpdit.forwardInset();
 147         }
 148
 149         return false;
 150 }
 151
 152
 153 /// Looks for next inset with one of the the given code
 154 bool findInset(DocIterator & dit, vector<InsetCode> const & codes,
 155         bool same_content)
 156 {
 157         string contents;
 158         DocIterator tmpdit = dit;
 159         tmpdit.forwardInset();
 160         if (!tmpdit)
 161                 return false;
 162
 163         if (same_content) {
 164                 Inset const * inset = tmpdit.nextInset();
 165                 if (inset
 166                     && find(codes.begin(), codes.end(), inset->lyxCode()) != codes.end()) {
 167                         contents = static_cast<InsetCommand const *>(inset)->getContents();
 168                 }
 169         }
 170
 171         if (!findNextInset(tmpdit, codes, contents)) {
 172                 if (dit.depth() != 1 || dit.pit() != 0 || dit.pos() != 0) {
 173                         tmpdit  = doc_iterator_begin(tmpdit.bottom().inset());
 174                         if (!findNextInset(tmpdit, codes, contents))
 175                                 return false;
 176                 } else
 177                         return false;
 178         }
 179
 180         dit = tmpdit;
 181         return true;
 182 }
 183
 184
 185 /// Looks for next inset with the given code
 186 void findInset(DocIterator & dit, InsetCode code, bool same_content)
 187 {
 188         findInset(dit, vector<InsetCode>(1, code), same_content);
 189 }
 190
 191
 192 /// Moves cursor to the next inset with one of the given codes.
 193 void gotoInset(BufferView * bv, vector<InsetCode> const & codes,
 194                bool same_content)
 195 {
 196         Cursor tmpcur = bv->cursor();
 197         if (!findInset(tmpcur, codes, same_content)) {
 198                 bv->cursor().message(_("No more insets"));
 199                 return;
 200         }
 201
 202         tmpcur.clearSelection();
 203         bv->setCursor(tmpcur);
 204 }
 205
 206
 207 /// Moves cursor to the next inset with given code.
 208 void gotoInset(BufferView * bv, InsetCode code, bool same_content)
 209 {
 210         gotoInset(bv, vector<InsetCode>(1, code), same_content);
 211 }
 212
 213
 214
 215 /// the type of outline operation
 216 enum OutlineOp {
 217         OutlineUp, // Move this header with text down
 218         OutlineDown,   // Move this header with text up
 219         OutlineIn, // Make this header deeper
 220         OutlineOut // Make this header shallower
 221 };
 222
 223
 224 void outline(OutlineOp mode, Cursor & cur)
 225 {
 226         Buffer & buf = cur.buffer();
 227         pit_type & pit = cur.pit();
 228         ParagraphList & pars = buf.text().paragraphs();
 229         ParagraphList::iterator bgn = pars.begin();
 230         // The first paragraph of the area to be copied:
 231         ParagraphList::iterator start = boost::next(bgn, pit);
 232         // The final paragraph of area to be copied:
 233         ParagraphList::iterator finish = start;
 234         ParagraphList::iterator end = pars.end();
 235
 236         TextClass::const_iterator lit =
 237                 buf.params().getTextClass().begin();
 238         TextClass::const_iterator const lend =
 239                 buf.params().getTextClass().end();
 240
 241         int const thistoclevel = start->layout()->toclevel;
 242         int toclevel;
 243         switch (mode) {
 244                 case OutlineUp: {
 245                         // Move out (down) from this section header
 246                         if (finish != end)
 247                                 ++finish;
 248                         // Seek the one (on same level) below
 249                         for (; finish != end; ++finish) {
 250                                 toclevel = finish->layout()->toclevel;
 251                                 if (toclevel != Layout::NOT_IN_TOC
 252                                     && toclevel <= thistoclevel) {
 253                                         break;
 254                                 }
 255                         }
 256                         ParagraphList::iterator dest = start;
 257                         // Move out (up) from this header
 258                         if (dest == bgn)
 259                                 break;
 260                         // Search previous same-level header above
 261                         do {
 262                                 --dest;
 263                                 toclevel = dest->layout()->toclevel;
 264                         } while(dest != bgn
 265                                 && (toclevel == Layout::NOT_IN_TOC
 266                                     || toclevel > thistoclevel));
 267                         // Not found; do nothing
 268                         if (toclevel == Layout::NOT_IN_TOC || toclevel > thistoclevel)
 269                                 break;
 270                         pit_type const newpit = std::distance(bgn, dest);
 271                         pit_type const len = std::distance(start, finish);
 272                         pit_type const deletepit = pit + len;
 273                         buf.undo().recordUndo(cur, ATOMIC_UNDO, newpit, deletepit - 1);
 274                         pars.insert(dest, start, finish);
 275                         start = boost::next(pars.begin(), deletepit);
 276                         pit = newpit;
 277                         pars.erase(start, finish);
 278                         break;
 279                 }
 280                 case OutlineDown: {
 281                         // Go down out of current header:
 282                         if (finish != end)
 283                                 ++finish;
 284                         // Find next same-level header:
 285                         for (; finish != end; ++finish) {
 286                                 toclevel = finish->layout()->toclevel;
 287                                 if (toclevel != Layout::NOT_IN_TOC && toclevel <= thistoclevel)
 288                                         break;
 289                         }
 290                         ParagraphList::iterator dest = finish;
 291                         // Go one down from *this* header:
 292                         if (dest != end)
 293                                 ++dest;
 294                         else
 295                                 break;
 296                         // Go further down to find header to insert in front of:
 297                         for (; dest != end; ++dest) {
 298                                 toclevel = dest->layout()->toclevel;
 299                                 if (toclevel != Layout::NOT_IN_TOC && toclevel <= thistoclevel)
 300                                         break;
 301                         }
 302                         // One such was found:
 303                         pit_type newpit = std::distance(bgn, dest);
 304                         pit_type const len = std::distance(start, finish);
 305                         buf.undo().recordUndo(cur, ATOMIC_UNDO, pit, newpit - 1);
 306                         pars.insert(dest, start, finish);
 307                         start = boost::next(bgn, pit);
 308                         pit = newpit - len;
 309                         pars.erase(start, finish);
 310                         break;
 311                 }
 312                 case OutlineIn:
 313                         buf.undo().recordUndo(cur);
 314                         for (; lit != lend; ++lit) {
 315                                 if ((*lit)->toclevel == thistoclevel + 1 &&
 316                                     start->layout()->labeltype == (*lit)->labeltype) {
 317                                         start->layout((*lit));
 318                                         break;
 319                                 }
 320                         }
 321                         break;
 322                 case OutlineOut:
 323                         buf.undo().recordUndo(cur);
 324                         for (; lit != lend; ++lit) {
 325                                 if ((*lit)->toclevel == thistoclevel - 1 &&
 326                                     start->layout()->labeltype == (*lit)->labeltype) {
 327                                         start->layout((*lit));
 328                                         break;
 329                                 }
 330                         }
 331                         break;
 332                 default:
 333                         break;
 334         }
 335 }
 336
 337 /// A map from a Text to the associated text metrics
 338 typedef std::map<Text const *, TextMetrics> TextMetricsCache;
 339
 340 } // anon namespace
 341
 342
 343 /////////////////////////////////////////////////////////////////////
 344 //
 345 // BufferView
 346 //
 347 /////////////////////////////////////////////////////////////////////
 348
 349 struct BufferView::Private
 350 {
 351         Private(BufferView & bv): wh_(0), cursor_(bv),
 352                 multiparsel_cache_(false), anchor_ref_(0), offset_ref_(0),
 353                 need_centering_(false), last_inset_(0), gui_(0)
 354         {}
 355
 356         ///
 357         ScrollbarParameters scrollbarParameters_;
 358         ///
 359         ViewMetricsInfo metrics_info_;
 360         ///
 361         CoordCache coord_cache_;
 362
 363         /// Estimated average par height for scrollbar.
 364         int wh_;
 365         /// this is used to handle XSelection events in the right manner.
 366         struct {
 367                 CursorSlice cursor;
 368                 CursorSlice anchor;
 369                 bool set;
 370         } xsel_cache_;
 371         ///
 372         Cursor cursor_;
 373         ///
 374         bool multiparsel_cache_;
 375         ///
 376         pit_type anchor_ref_;
 377         ///
 378         int offset_ref_;
 379         ///
 380         bool need_centering_;
 381
 382         /// keyboard mapping object.
 383         Intl intl_;
 384
 385         /// last visited inset.
 386         /** kept to send setMouseHover(false).
 387           * Not owned, so don't delete.
 388           */
 389         Inset * last_inset_;
 390
 391         mutable TextMetricsCache text_metrics_;
 392
 393         /// Whom to notify.
 394         /** Not owned, so don't delete.
 395           */
 396         frontend::GuiBufferViewDelegate * gui_;
 397 };
 398
 399
 400 BufferView::BufferView(Buffer & buf)
 401         : width_(0), height_(0), buffer_(buf), d(new Private(*this))
 402 {
 403         d->xsel_cache_.set = false;
 404         d->intl_.initKeyMapper(lyxrc.use_kbmap);
 405
 406         d->cursor_.push(buffer_.inset());
 407         d->cursor_.resetAnchor();
 408         d->cursor_.setCurrentFont();
 409
 410         if (graphics::Previews::status() != LyXRC::PREVIEW_OFF)
 411                 graphics::Previews::get().generateBufferPreviews(buffer_);
 412 }
 413
 414
 415 BufferView::~BufferView()
 416 {
 417         // current buffer is going to be switched-off, save cursor pos
 418         // Ideally, the whole cursor stack should be saved, but session
 419         // currently can only handle bottom (whole document) level pit and pos.
 420         // That is to say, if a cursor is in a nested inset, it will be
 421         // restore to the left of the top level inset.
 422         LyX::ref().session().lastFilePos().save(
 423                 support::FileName(buffer_.absFileName()),
 424                 boost::tie(d->cursor_.bottom().pit(), d->cursor_.bottom().pos()) );
 425
 426         delete d;
 427 }
 428
 429
 430 Intl & BufferView::getIntl()
 431 {
 432         return d->intl_;
 433 }
 434
 435
 436 Intl const & BufferView::getIntl() const
 437 {
 438         return d->intl_;
 439 }
 440
 441
 442 CoordCache & BufferView::coordCache()
 443 {
 444         return d->coord_cache_;
 445 }
 446
 447
 448 CoordCache const & BufferView::coordCache() const
 449 {
 450         return d->coord_cache_;
 451 }
 452
 453
 454 Buffer & BufferView::buffer()
 455 {
 456         return buffer_;
 457 }
 458
 459
 460 Buffer const & BufferView::buffer() const
 461 {
 462         return buffer_;
 463 }
 464
 465
 466 bool BufferView::fitCursor()
 467 {
 468         if (cursorStatus(d->cursor_) == CUR_INSIDE) {
 469                 frontend::FontMetrics const & fm =
 470                         theFontMetrics(d->cursor_.getFont());
 471                 int const asc = fm.maxAscent();
 472                 int const des = fm.maxDescent();
 473                 Point const p = getPos(d->cursor_, d->cursor_.boundary());
 474                 if (p.y_ - asc >= 0 && p.y_ + des < height_)
 475                         return false;
 476         }
 477         center();
 478         return true;
 479 }
 480
 481
 482 bool BufferView::multiParSel()
 483 {
 484         if (!d->cursor_.selection())
 485                 return false;
 486         bool ret = d->multiparsel_cache_;
 487         d->multiparsel_cache_ = d->cursor_.selBegin().pit() != d->cursor_.selEnd().pit();
 488         // Either this, or previous selection spans paragraphs
 489         return ret || d->multiparsel_cache_;
 490 }
 491
 492
 493 void BufferView::processUpdateFlags(Update::flags flags)
 494 {
 495         // last_inset_ points to the last visited inset. This pointer may become
 496         // invalid because of keyboard editing. Since all such operations
 497         // causes screen update(), I reset last_inset_ to avoid such a problem.
 498         d->last_inset_ = 0;
 499         // This is close to a hot-path.
 500         LYXERR(Debug::DEBUG)
 501                 << BOOST_CURRENT_FUNCTION
 502                 << "[fitcursor = " << (flags & Update::FitCursor)
 503                 << ", forceupdate = " << (flags & Update::Force)
 504                 << ", singlepar = " << (flags & Update::SinglePar)
 505                 << "]  buffer: " << &buffer_ << endl;
 506
 507         // Update macro store
 508         if (!(cursor().inMathed() && cursor().inMacroMode()))
 509                 buffer_.buildMacros();
 510
 511         // Now do the first drawing step if needed. This consists on updating
 512         // the CoordCache in updateMetrics().
 513         // The second drawing step is done in WorkArea::redraw() if needed.
 514
 515         // Case when no explicit update is requested.
 516         if (!flags) {
 517                 // no need to redraw anything.
 518                 d->metrics_info_.update_strategy = NoScreenUpdate;
 519                 return;
 520         }
 521
 522         if (flags == Update::Decoration) {
 523                 d->metrics_info_.update_strategy = DecorationUpdate;
 524                 buffer_.changed();
 525                 return;
 526         }
 527
 528         if (flags == Update::FitCursor
 529                 || flags == (Update::Decoration | Update::FitCursor)) {
 530                 bool const fit_cursor = fitCursor();
 531                 // tell the frontend to update the screen if needed.
 532                 if (fit_cursor) {
 533                         updateMetrics(false);
 534                         buffer_.changed();
 535                         return;
 536                 }
 537                 if (flags & Update::Decoration) {
 538                         d->metrics_info_.update_strategy = DecorationUpdate;
 539                         buffer_.changed();
 540                         return;
 541                 }
 542                 // no screen update is needed.
 543                 d->metrics_info_.update_strategy = NoScreenUpdate;
 544                 return;
 545         }
 546
 547         bool full_metrics = flags & Update::Force;
 548         if (flags & Update::MultiParSel)
 549                 full_metrics |= multiParSel();
 550
 551         bool const single_par = !full_metrics;
 552         updateMetrics(single_par);
 553
 554         if (!(flags & Update::FitCursor)) {
 555                 buffer_.changed();
 556                 return;
 557         }
 558
 559         //FIXME: updateMetrics() does not update paragraph position
 560         // This is done at draw() time. So we need a redraw!
 561         buffer_.changed();
 562         if (!fitCursor())
 563                 // The screen has already been updated thanks to the
 564                 // 'buffer_.changed()' call three line above. So no need
 565                 // to redraw again.
 566                 return;
 567
 568         // The screen has been recentered around the cursor position so
 569         // refresh it:
 570         updateMetrics(false);
 571         buffer_.changed();
 572 }
 573
 574
 575 void BufferView::updateScrollbar()
 576 {
 577         Text & t = buffer_.text();
 578         TextMetrics & tm = d->text_metrics_[&t];
 579
 580         int const parsize = int(t.paragraphs().size() - 1);
 581         if (d->anchor_ref_ >  parsize)  {
 582                 d->anchor_ref_ = parsize;
 583                 d->offset_ref_ = 0;
 584         }
 585
 586         LYXERR(Debug::GUI)
 587                 << BOOST_CURRENT_FUNCTION
 588                 << " Updating scrollbar: height: " << t.paragraphs().size()
 589                 << " curr par: " << d->cursor_.bottom().pit()
 590                 << " default height " << defaultRowHeight() << endl;
 591
 592         // It would be better to fix the scrollbar to understand
 593         // values in [0..1] and divide everything by wh
 594
 595         // estimated average paragraph height:
 596         if (d->wh_ == 0)
 597                 d->wh_ = height_ / 4;
 598
 599         int h = tm.parMetrics(d->anchor_ref_).height();
 600
 601         // Normalize anchor/offset (MV):
 602         while (d->offset_ref_ > h && d->anchor_ref_ < parsize) {
 603                 d->anchor_ref_++;
 604                 d->offset_ref_ -= h;
 605                 h = tm.parMetrics(d->anchor_ref_).height();
 606         }
 607         // Look at paragraph heights on-screen
 608         int sumh = 0;
 609         int nh = 0;
 610         for (pit_type pit = d->anchor_ref_; pit <= parsize; ++pit) {
 611                 if (sumh > height_)
 612                         break;
 613                 int const h2 = tm.parMetrics(pit).height();
 614                 sumh += h2;
 615                 nh++;
 616         }
 617
 618         BOOST_ASSERT(nh);
 619         int const hav = sumh / nh;
 620         // More realistic average paragraph height
 621         if (hav > d->wh_)
 622                 d->wh_ = hav;
 623
 624         BOOST_ASSERT(h);
 625         d->scrollbarParameters_.height = (parsize + 1) * d->wh_;
 626         d->scrollbarParameters_.position = d->anchor_ref_ * d->wh_ + int(d->offset_ref_ * d->wh_ / float(h));
 627         d->scrollbarParameters_.lineScrollHeight = int(d->wh_ * defaultRowHeight() / float(h));
 628 }
 629
 630
 631 ScrollbarParameters const & BufferView::scrollbarParameters() const
 632 {
 633         return d->scrollbarParameters_;
 634 }
 635
 636
 637 void BufferView::scrollDocView(int value)
 638 {
 639         LYXERR(Debug::GUI) << BOOST_CURRENT_FUNCTION
 640                            << "[ value = " << value << "]" << endl;
 641
 642         Text & t = buffer_.text();
 643         TextMetrics & tm = d->text_metrics_[&t];
 644
 645         float const bar = value / float(d->wh_ * t.paragraphs().size());
 646
 647         d->anchor_ref_ = int(bar * t.paragraphs().size());
 648         if (d->anchor_ref_ >  int(t.paragraphs().size()) - 1)
 649                 d->anchor_ref_ = int(t.paragraphs().size()) - 1;
 650
 651         tm.redoParagraph(d->anchor_ref_);
 652         int const h = tm.parMetrics(d->anchor_ref_).height();
 653         d->offset_ref_ = int((bar * t.paragraphs().size() - d->anchor_ref_) * h);
 654         updateMetrics(false);
 655         buffer_.changed();
 656 }
 657
 658
 659 void BufferView::setCursorFromScrollbar()
 660 {
 661         TextMetrics & tm = d->text_metrics_[&buffer_.text()];
 662
 663         int const height = 2 * defaultRowHeight();
 664         int const first = height;
 665         int const last = height_ - height;
 666         Cursor & cur = d->cursor_;
 667
 668         switch (cursorStatus(cur)) {
 669         case CUR_ABOVE:
 670                 // We reset the cursor because cursorStatus() does not
 671                 // work when the cursor is within mathed.
 672                 cur.reset(buffer_.inset());
 673                 tm.setCursorFromCoordinates(cur, 0, first);
 674                 cur.clearSelection();
 675                 break;
 676         case CUR_BELOW:
 677                 // We reset the cursor because cursorStatus() does not
 678                 // work when the cursor is within mathed.
 679                 cur.reset(buffer_.inset());
 680                 tm.setCursorFromCoordinates(cur, 0, last);
 681                 cur.clearSelection();
 682                 break;
 683         case CUR_INSIDE:
 684                 int const y = getPos(cur, cur.boundary()).y_;
 685                 int const newy = min(last, max(y, first));
 686                 if (y != newy) {
 687                         cur.reset(buffer_.inset());
 688                         tm.setCursorFromCoordinates(cur, 0, newy);
 689                 }
 690         }
 691 }
 692
 693
 694 Change const BufferView::getCurrentChange() const
 695 {
 696         if (!d->cursor_.selection())
 697                 return Change(Change::UNCHANGED);
 698
 699         DocIterator dit = d->cursor_.selectionBegin();
 700         return dit.paragraph().lookupChange(dit.pos());
 701 }
 702
 703
 704 // this could be used elsewhere as well?
 705 // FIXME: This does not work within mathed!
 706 CursorStatus BufferView::cursorStatus(DocIterator const & dit) const
 707 {
 708         Point const p = getPos(dit, dit.boundary());
 709         if (p.y_ < 0)
 710                 return CUR_ABOVE;
 711         if (p.y_ > workHeight())
 712                 return CUR_BELOW;
 713         return CUR_INSIDE;
 714 }
 715
 716
 717 void BufferView::saveBookmark(unsigned int idx)
 718 {
 719         // tenatively save bookmark, id and pos will be used to
 720         // acturately locate a bookmark in a 'live' lyx session.
 721         // pit and pos will be updated with bottom level pit/pos
 722         // when lyx exits.
 723         LyX::ref().session().bookmarks().save(
 724                 FileName(buffer_.absFileName()),
 725                 d->cursor_.bottom().pit(),
 726                 d->cursor_.bottom().pos(),
 727                 d->cursor_.paragraph().id(),
 728                 d->cursor_.pos(),
 729                 idx
 730         );
 731         if (idx)
 732                 // emit message signal.
 733                 message(_("Save bookmark"));
 734 }
 735
 736
 737 bool BufferView::moveToPosition(pit_type bottom_pit, pos_type bottom_pos,
 738         int top_id, pos_type top_pos)
 739 {
 740         bool success = false;
 741         DocIterator doc_it;
 742
 743         d->cursor_.clearSelection();
 744
 745         // if a valid par_id is given, try it first
 746         // This is the case for a 'live' bookmark when unique paragraph ID
 747         // is used to track bookmarks.
 748         if (top_id > 0) {
 749                 ParIterator par = buffer_.getParFromID(top_id);
 750                 if (par != buffer_.par_iterator_end()) {
 751                         doc_it = makeDocIterator(par, min(par->size(), top_pos));
 752                         // Some slices of the iterator may not be
 753                         // reachable (e.g. closed collapsable inset)
 754                         // so the dociterator may need to be
 755                         // shortened. Otherwise, setCursor may crash
 756                         // lyx when the cursor can not be set to these
 757                         // insets.
 758                         size_t const n = doc_it.depth();
 759                         for (size_t i = 0; i < n; ++i)
 760                                 if (doc_it[i].inset().editable() != Inset::HIGHLY_EDITABLE) {
 761                                         doc_it.resize(i);
 762                                         break;
 763                                 }
 764                         success = true;
 765                 }
 766         }
 767
 768         // if top_id == 0, or searching through top_id failed
 769         // This is the case for a 'restored' bookmark when only bottom
 770         // (document level) pit was saved. Because of this, bookmark
 771         // restoration is inaccurate. If a bookmark was within an inset,
 772         // it will be restored to the left of the outmost inset that contains
 773         // the bookmark.
 774         if (static_cast<size_t>(bottom_pit) < buffer_.paragraphs().size()) {
 775                 doc_it = doc_iterator_begin(buffer_.inset());
 776                 doc_it.pit() = bottom_pit;
 777                 doc_it.pos() = min(bottom_pos, doc_it.paragraph().size());
 778                 success = true;
 779         }
 780
 781         if (success) {
 782                 // Note: only bottom (document) level pit is set.
 783                 setCursor(doc_it);
 784                 // set the current font.
 785                 d->cursor_.setCurrentFont();
 786                 // center the screen on this new position.
 787                 center();
 788         }
 789
 790         return success;
 791 }
 792
 793
 794 void BufferView::translateAndInsert(char_type c, Text * t, Cursor & cur)
 795 {
 796         if (lyxrc.rtl_support) {
 797                 if (d->cursor_.real_current_font.isRightToLeft()) {
 798                         if (d->intl_.keymap == Intl::PRIMARY)
 799                                 d->intl_.keyMapSec();
 800                 } else {
 801                         if (d->intl_.keymap == Intl::SECONDARY)
 802                                 d->intl_.keyMapPrim();
 803                 }
 804         }
 805
 806         d->intl_.getTransManager().translateAndInsert(c, t, cur);
 807 }
 808
 809
 810 int BufferView::workWidth() const
 811 {
 812         return width_;
 813 }
 814
 815
 816 void BufferView::updateOffsetRef()
 817 {
 818         // No need to update d->offset_ref_ in this case.
 819         if (!d->need_centering_)
 820                 return;
 821
 822         // We are not properly started yet, delay until resizing is
 823         // done.
 824         if (height_ == 0)
 825                 return;
 826
 827         CursorSlice & bot = d->cursor_.bottom();
 828         TextMetrics & tm = d->text_metrics_[bot.text()];
 829         ParagraphMetrics const & pm = tm.parMetrics(bot.pit());
 830         int y = coordOffset(d->cursor_, d->cursor_.boundary()).y_;
 831         d->offset_ref_ = y + pm.ascent() - height_ / 2;
 832
 833         d->need_centering_ = false;
 834 }
 835
 836
 837 void BufferView::center()
 838 {
 839         d->anchor_ref_ = d->cursor_.bottom().pit();
 840         d->need_centering_ = true;
 841 }
 842
 843
 844 FuncStatus BufferView::getStatus(FuncRequest const & cmd)
 845 {
 846         FuncStatus flag;
 847
 848         Cursor & cur = d->cursor_;
 849
 850         switch (cmd.action) {
 851
 852         case LFUN_UNDO:
 853                 flag.enabled(buffer_.undo().hasUndoStack());
 854                 break;
 855         case LFUN_REDO:
 856                 flag.enabled(buffer_.undo().hasRedoStack());
 857                 break;
 858         case LFUN_FILE_INSERT:
 859         case LFUN_FILE_INSERT_PLAINTEXT_PARA:
 860         case LFUN_FILE_INSERT_PLAINTEXT:
 861         case LFUN_BOOKMARK_SAVE:
 862                 // FIXME: Actually, these LFUNS should be moved to Text
 863                 flag.enabled(cur.inTexted());
 864                 break;
 865         case LFUN_FONT_STATE:
 866         case LFUN_LABEL_INSERT:
 867         case LFUN_INFO_INSERT:
 868         case LFUN_PARAGRAPH_GOTO:
 869         // FIXME handle non-trivially
 870         case LFUN_OUTLINE_UP:
 871         case LFUN_OUTLINE_DOWN:
 872         case LFUN_OUTLINE_IN:
 873         case LFUN_OUTLINE_OUT:
 874         case LFUN_NOTE_NEXT:
 875         case LFUN_REFERENCE_NEXT:
 876         case LFUN_WORD_FIND:
 877         case LFUN_WORD_REPLACE:
 878         case LFUN_MARK_OFF:
 879         case LFUN_MARK_ON:
 880         case LFUN_MARK_TOGGLE:
 881         case LFUN_SCREEN_RECENTER:
 882         case LFUN_BIBTEX_DATABASE_ADD:
 883         case LFUN_BIBTEX_DATABASE_DEL:
 884         case LFUN_WORDS_COUNT:
 885         case LFUN_NEXT_INSET_TOGGLE:
 886                 flag.enabled(true);
 887                 break;
 888
 889         case LFUN_LABEL_GOTO: {
 890                 flag.enabled(!cmd.argument().empty()
 891                     || getInsetByCode<InsetRef>(cur, REF_CODE));
 892                 break;
 893         }
 894
 895         case LFUN_CHANGES_TRACK:
 896                 flag.enabled(true);
 897                 flag.setOnOff(buffer_.params().trackChanges);
 898                 break;
 899
 900         case LFUN_CHANGES_OUTPUT:
 901                 flag.enabled(true);
 902                 flag.setOnOff(buffer_.params().outputChanges);
 903                 break;
 904
 905         case LFUN_CHANGES_MERGE:
 906         case LFUN_CHANGE_NEXT:
 907         case LFUN_ALL_CHANGES_ACCEPT:
 908         case LFUN_ALL_CHANGES_REJECT:
 909                 // TODO: context-sensitive enabling of LFUNs
 910                 // In principle, these command should only be enabled if there
 911                 // is a change in the document. However, without proper
 912                 // optimizations, this will inevitably result in poor performance.
 913                 flag.enabled(true);
 914                 break;
 915
 916         case LFUN_BUFFER_TOGGLE_COMPRESSION: {
 917                 flag.setOnOff(buffer_.params().compressed);
 918                 break;
 919         }
 920
 921         case LFUN_SCREEN_UP:
 922         case LFUN_SCREEN_DOWN:
 923                 flag.enabled(true);
 924                 break;
 925
 926         // FIXME: LFUN_SCREEN_DOWN_SELECT should be removed from
 927         // everywhere else before this can enabled:
 928         case LFUN_SCREEN_UP_SELECT:
 929         case LFUN_SCREEN_DOWN_SELECT:
 930                 flag.enabled(false);
 931                 break;
 932
 933         case LFUN_LAYOUT_TABULAR:
 934                 flag.enabled(cur.innerInsetOfType(TABULAR_CODE));
 935                 break;
 936
 937         case LFUN_LAYOUT:
 938         case LFUN_LAYOUT_PARAGRAPH:
 939                 flag.enabled(cur.inset().forceDefaultParagraphs(cur.idx()));
 940                 break;
 941
 942         case LFUN_INSET_SETTINGS: {
 943                 InsetCode code = cur.inset().lyxCode();
 944                 bool enable = false;
 945                 switch (code) {
 946                         case TABULAR_CODE:
 947                                 enable = cmd.argument() == "tabular";
 948                                 break;
 949                         case ERT_CODE:
 950                                 enable = cmd.argument() == "ert";
 951                                 break;
 952                         case FLOAT_CODE:
 953                                 enable = cmd.argument() == "float";
 954                                 break;
 955                         case WRAP_CODE:
 956                                 enable = cmd.argument() == "wrap";
 957                                 break;
 958                         case NOTE_CODE:
 959                                 enable = cmd.argument() == "note";
 960                                 break;
 961                         case BRANCH_CODE:
 962                                 enable = cmd.argument() == "branch";
 963                                 break;
 964                         case BOX_CODE:
 965                                 enable = cmd.argument() == "box";
 966                                 break;
 967                         case LISTINGS_CODE:
 968                                 enable = cmd.argument() == "listings";
 969                                 break;
 970                         default:
 971                                 break;
 972                 }
 973                 flag.enabled(enable);
 974                 break;
 975         }
 976
 977         case LFUN_DIALOG_SHOW_NEW_INSET:
 978                 flag.enabled(cur.inset().lyxCode() != ERT_CODE &&
 979                         cur.inset().lyxCode() != LISTINGS_CODE);
 980                 if (cur.inset().lyxCode() == CAPTION_CODE) {
 981                         FuncStatus flag;
 982                         if (cur.inset().getStatus(cur, cmd, flag))
 983                                 return flag;
 984                 }
 985                 break;
 986
 987         default:
 988                 flag.enabled(false);
 989         }
 990
 991         return flag;
 992 }
 993
 994
 995 Update::flags BufferView::dispatch(FuncRequest const & cmd)
 996 {
 997         //lyxerr << BOOST_CURRENT_FUNCTION
 998         //       << [ cmd = " << cmd << "]" << endl;
 999
1000         // Make sure that the cached BufferView is correct.
1001         LYXERR(Debug::ACTION) << BOOST_CURRENT_FUNCTION
1002                 << " action[" << cmd.action << ']'
1003                 << " arg[" << to_utf8(cmd.argument()) << ']'
1004                 << " x[" << cmd.x << ']'
1005                 << " y[" << cmd.y << ']'
1006                 << " button[" << cmd.button() << ']'
1007                 << endl;
1008
1009         Cursor & cur = d->cursor_;
1010         // Default Update flags.
1011         Update::flags updateFlags = Update::Force | Update::FitCursor;
1012
1013         switch (cmd.action) {
1014
1015         case LFUN_UNDO:
1016                 cur.message(_("Undo"));
1017                 cur.clearSelection();
1018                 if (!cur.textUndo()) {
1019                         cur.message(_("No further undo information"));
1020                         updateFlags = Update::None;
1021                 }
1022                 break;
1023
1024         case LFUN_REDO:
1025                 cur.message(_("Redo"));
1026                 cur.clearSelection();
1027                 if (!cur.textRedo()) {
1028                         cur.message(_("No further redo information"));
1029                         updateFlags = Update::None;
1030                 }
1031                 break;
1032
1033         case LFUN_FILE_INSERT:
1034                 // FIXME UNICODE
1035                 menuInsertLyXFile(to_utf8(cmd.argument()));
1036                 break;
1037
1038         case LFUN_FILE_INSERT_PLAINTEXT_PARA:
1039                 // FIXME UNICODE
1040                 insertPlaintextFile(to_utf8(cmd.argument()), true);
1041                 break;
1042
1043         case LFUN_FILE_INSERT_PLAINTEXT:
1044                 // FIXME UNICODE
1045                 insertPlaintextFile(to_utf8(cmd.argument()), false);
1046                 break;
1047
1048         case LFUN_FONT_STATE:
1049                 cur.message(cur.currentState());
1050                 break;
1051
1052         case LFUN_BOOKMARK_SAVE:
1053                 saveBookmark(convert<unsigned int>(to_utf8(cmd.argument())));
1054                 break;
1055
1056         case LFUN_LABEL_GOTO: {
1057                 docstring label = cmd.argument();
1058                 if (label.empty()) {
1059                         InsetRef * inset =
1060                                 getInsetByCode<InsetRef>(d->cursor_,
1061                                                          REF_CODE);
1062                         if (inset) {
1063                                 label = inset->getParam("reference");
1064                                 // persistent=false: use temp_bookmark
1065                                 saveBookmark(0);
1066                         }
1067                 }
1068
1069                 if (!label.empty())
1070                         gotoLabel(label);
1071                 break;
1072         }
1073
1074         case LFUN_PARAGRAPH_GOTO: {
1075                 int const id = convert<int>(to_utf8(cmd.argument()));
1076                 int i = 0;
1077                 for (Buffer * b = &buffer_; i == 0 || b != &buffer_;
1078                         b = theBufferList().next(b)) {
1079
1080                         ParIterator par = b->getParFromID(id);
1081                         if (par == b->par_iterator_end()) {
1082                                 LYXERR(Debug::INFO)
1083                                         << "No matching paragraph found! ["
1084                                         << id << "]." << endl;
1085                         } else {
1086                                 LYXERR(Debug::INFO)
1087                                         << "Paragraph " << par->id()
1088                                         << " found in buffer `"
1089                                         << b->absFileName() << "'." << endl;
1090
1091                                 if (b == &buffer_) {
1092                                         // Set the cursor
1093                                         setCursor(makeDocIterator(par, 0));
1094                                 } else {
1095                                         // Switch to other buffer view and resend cmd
1096                                         theLyXFunc().dispatch(FuncRequest(
1097                                                 LFUN_BUFFER_SWITCH, b->absFileName()));
1098                                         theLyXFunc().dispatch(cmd);
1099                                         updateFlags = Update::None;
1100                                 }
1101                                 break;
1102                         }
1103                         ++i;
1104                 }
1105                 break;
1106         }
1107
1108         case LFUN_OUTLINE_UP:
1109                 outline(OutlineUp, d->cursor_);
1110                 d->cursor_.text()->setCursor(d->cursor_, d->cursor_.pit(), 0);
1111                 updateLabels(buffer_);
1112                 break;
1113         case LFUN_OUTLINE_DOWN:
1114                 outline(OutlineDown, d->cursor_);
1115                 d->cursor_.text()->setCursor(d->cursor_, d->cursor_.pit(), 0);
1116                 updateLabels(buffer_);
1117                 break;
1118         case LFUN_OUTLINE_IN:
1119                 outline(OutlineIn, d->cursor_);
1120                 updateLabels(buffer_);
1121                 break;
1122         case LFUN_OUTLINE_OUT:
1123                 outline(OutlineOut, d->cursor_);
1124                 updateLabels(buffer_);
1125                 break;
1126
1127         case LFUN_NOTE_NEXT:
1128                 gotoInset(this, NOTE_CODE, false);
1129                 break;
1130
1131         case LFUN_REFERENCE_NEXT: {
1132                 vector<InsetCode> tmp;
1133                 tmp.push_back(LABEL_CODE);
1134                 tmp.push_back(REF_CODE);
1135                 gotoInset(this, tmp, true);
1136                 break;
1137         }
1138
1139         case LFUN_CHANGES_TRACK:
1140                 buffer_.params().trackChanges = !buffer_.params().trackChanges;
1141                 break;
1142
1143         case LFUN_CHANGES_OUTPUT:
1144                 buffer_.params().outputChanges = !buffer_.params().outputChanges;
1145                 if (buffer_.params().outputChanges) {
1146                         bool dvipost    = LaTeXFeatures::isAvailable("dvipost");
1147                         bool xcolorsoul = LaTeXFeatures::isAvailable("soul") &&
1148                                           LaTeXFeatures::isAvailable("xcolor");
1149
1150                         if (!dvipost && !xcolorsoul) {
1151                                 Alert::warning(_("Changes not shown in LaTeX output"),
1152                                                _("Changes will not be highlighted in LaTeX output, "
1153                                                  "because neither dvipost nor xcolor/soul are installed.\n"
1154                                                  "Please install these packages or redefine "
1155                                                  "\\lyxadded and \\lyxdeleted in the LaTeX preamble."));
1156                         } else if (!xcolorsoul) {
1157                                 Alert::warning(_("Changes not shown in LaTeX output"),
1158                                                _("Changes will not be highlighted in LaTeX output "
1159                                                  "when using pdflatex, because xcolor and soul are not installed.\n"
1160                                                  "Please install both packages or redefine "
1161                                                  "\\lyxadded and \\lyxdeleted in the LaTeX preamble."));
1162                         }
1163                 }
1164                 break;
1165
1166         case LFUN_CHANGE_NEXT:
1167                 findNextChange(this);
1168                 break;
1169
1170         case LFUN_CHANGES_MERGE:
1171                 if (findNextChange(this))
1172                         showDialog("changes");
1173                 break;
1174
1175         case LFUN_ALL_CHANGES_ACCEPT:
1176                 // select complete document
1177                 d->cursor_.reset(buffer_.inset());
1178                 d->cursor_.selHandle(true);
1179                 buffer_.text().cursorBottom(d->cursor_);
1180                 // accept everything in a single step to support atomic undo
1181                 buffer_.text().acceptOrRejectChanges(d->cursor_, Text::ACCEPT);
1182                 break;
1183
1184         case LFUN_ALL_CHANGES_REJECT:
1185                 // select complete document
1186                 d->cursor_.reset(buffer_.inset());
1187                 d->cursor_.selHandle(true);
1188                 buffer_.text().cursorBottom(d->cursor_);
1189                 // reject everything in a single step to support atomic undo
1190                 // Note: reject does not work recursively; the user may have to repeat the operation
1191                 buffer_.text().acceptOrRejectChanges(d->cursor_, Text::REJECT);
1192                 break;
1193
1194         case LFUN_WORD_FIND:
1195                 find(this, cmd);
1196                 break;
1197
1198         case LFUN_WORD_REPLACE: {
1199                 bool has_deleted = false;
1200                 if (cur.selection()) {
1201                         DocIterator beg = cur.selectionBegin();
1202                         DocIterator end = cur.selectionEnd();
1203                         if (beg.pit() == end.pit()) {
1204                                 for (pos_type p = beg.pos() ; p < end.pos() ; ++p) {
1205                                         if (cur.paragraph().isDeleted(p))
1206                                                 has_deleted = true;
1207                                 }
1208                         }
1209                 }
1210                 replace(this, cmd, has_deleted);
1211                 break;
1212         }
1213
1214         case LFUN_MARK_OFF:
1215                 cur.clearSelection();
1216                 cur.resetAnchor();
1217                 cur.message(from_utf8(N_("Mark off")));
1218                 break;
1219
1220         case LFUN_MARK_ON:
1221                 cur.clearSelection();
1222                 cur.mark() = true;
1223                 cur.resetAnchor();
1224                 cur.message(from_utf8(N_("Mark on")));
1225                 break;
1226
1227         case LFUN_MARK_TOGGLE:
1228                 cur.clearSelection();
1229                 if (cur.mark()) {
1230                         cur.mark() = false;
1231                         cur.message(from_utf8(N_("Mark removed")));
1232                 } else {
1233                         cur.mark() = true;
1234                         cur.message(from_utf8(N_("Mark set")));
1235                 }
1236                 cur.resetAnchor();
1237                 break;
1238
1239         case LFUN_SCREEN_RECENTER:
1240                 center();
1241                 break;
1242
1243         case LFUN_BIBTEX_DATABASE_ADD: {
1244                 Cursor tmpcur = d->cursor_;
1245                 findInset(tmpcur, BIBTEX_CODE, false);
1246                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
1247                                                 BIBTEX_CODE);
1248                 if (inset) {
1249                         if (inset->addDatabase(to_utf8(cmd.argument())))
1250                                 buffer_.updateBibfilesCache();
1251                 }
1252                 break;
1253         }
1254
1255         case LFUN_BIBTEX_DATABASE_DEL: {
1256                 Cursor tmpcur = d->cursor_;
1257                 findInset(tmpcur, BIBTEX_CODE, false);
1258                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
1259                                                 BIBTEX_CODE);
1260                 if (inset) {
1261                         if (inset->delDatabase(to_utf8(cmd.argument())))
1262                                 buffer_.updateBibfilesCache();
1263                 }
1264                 break;
1265         }
1266
1267         case LFUN_WORDS_COUNT: {
1268                 DocIterator from, to;
1269                 if (cur.selection()) {
1270                         from = cur.selectionBegin();
1271                         to = cur.selectionEnd();
1272                 } else {
1273                         from = doc_iterator_begin(buffer_.inset());
1274                         to = doc_iterator_end(buffer_.inset());
1275                 }
1276                 int const count = countWords(from, to);
1277                 docstring message;
1278                 if (count != 1) {
1279                         if (cur.selection())
1280                                 message = bformat(_("%1$d words in selection."),
1281                                           count);
1282                                 else
1283                                         message = bformat(_("%1$d words in document."),
1284                                                           count);
1285                 }
1286                 else {
1287                         if (cur.selection())
1288                                 message = _("One word in selection.");
1289                         else
1290                                 message = _("One word in document.");
1291                 }
1292
1293                 Alert::information(_("Count words"), message);
1294         }
1295                 break;
1296
1297         case LFUN_BUFFER_TOGGLE_COMPRESSION:
1298                 // turn compression on/off
1299                 buffer_.params().compressed = !buffer_.params().compressed;
1300                 break;
1301
1302         case LFUN_NEXT_INSET_TOGGLE: {
1303                 // this is the real function we want to invoke
1304                 FuncRequest tmpcmd = FuncRequest(LFUN_INSET_TOGGLE, cmd.origin);
1305                 // if there is an inset at cursor, see whether it
1306                 // wants to toggle.
1307                 Inset * inset = cur.nextInset();
1308                 if (inset) {
1309                         if (inset->isActive()) {
1310                                 Cursor tmpcur = cur;
1311                                 tmpcur.pushLeft(*inset);
1312                                 inset->dispatch(tmpcur, tmpcmd);
1313                                 if (tmpcur.result().dispatched()) {
1314                                         cur.dispatched();
1315                                 }
1316                         } else if (inset->editable() == Inset::IS_EDITABLE) {
1317                                 inset->edit(cur, true);
1318                         }
1319                 }
1320                 // if it did not work, try the underlying inset.
1321                 if (!cur.result().dispatched())
1322                         cur.dispatch(tmpcmd);
1323
1324                 if (cur.result().dispatched())
1325                         cur.clearSelection();
1326
1327                 break;
1328         }
1329
1330         case LFUN_SCREEN_UP:
1331         case LFUN_SCREEN_DOWN: {
1332                 Point p = getPos(cur, cur.boundary());
1333                 if (p.y_ < 0 || p.y_ > height_) {
1334                         // The cursor is off-screen so recenter before proceeding.
1335                         center();
1336                         updateMetrics(false);
1337                         //FIXME: updateMetrics() does not update paragraph position
1338                         // This is done at draw() time. So we need a redraw!
1339                         buffer_.changed();
1340                         p = getPos(cur, cur.boundary());
1341                 }
1342                 scroll(cmd.action == LFUN_SCREEN_UP? - height_ : height_);
1343                 cur.reset(buffer_.inset());
1344                 d->text_metrics_[&buffer_.text()].editXY(cur, p.x_, p.y_);
1345                 //FIXME: what to do with cur.x_target()?
1346                 cur.finishUndo();
1347                 // The metrics are already up to date. see scroll()
1348                 updateFlags = Update::None;
1349                 break;
1350         }
1351
1352         case LFUN_SCREEN_UP_SELECT:
1353         case LFUN_SCREEN_DOWN_SELECT: {
1354                 cur.selHandle(true);
1355                 size_t initial_depth = cur.depth();
1356                 Point const p = getPos(cur, cur.boundary());
1357                 scroll(cmd.action == LFUN_SCREEN_UP_SELECT? - height_ : height_);
1358                 // FIXME: We need to verify if the cursor stayed within an inset...
1359                 //cur.reset(buffer_.inset());
1360                 d->text_metrics_[&buffer_.text()].editXY(cur, p.x_, p.y_);
1361                 cur.finishUndo();
1362                 while (cur.depth() > initial_depth) {
1363                         cur.forwardInset();
1364                 }
1365                 // FIXME: we need to do a redraw again because of the selection
1366                 buffer_.changed();
1367                 updateFlags = Update::Force | Update::FitCursor;
1368                 break;
1369         }
1370
1371         default:
1372                 updateFlags = Update::None;
1373         }
1374
1375         return updateFlags;
1376 }
1377
1378
1379 docstring const BufferView::requestSelection()
1380 {
1381         Cursor & cur = d->cursor_;
1382
1383         if (!cur.selection()) {
1384                 d->xsel_cache_.set = false;
1385                 return docstring();
1386         }
1387
1388         if (!d->xsel_cache_.set ||
1389             cur.top() != d->xsel_cache_.cursor ||
1390             cur.anchor_.top() != d->xsel_cache_.anchor)
1391         {
1392                 d->xsel_cache_.cursor = cur.top();
1393                 d->xsel_cache_.anchor = cur.anchor_.top();
1394                 d->xsel_cache_.set = cur.selection();
1395                 return cur.selectionAsString(false);
1396         }
1397         return docstring();
1398 }
1399
1400
1401 void BufferView::clearSelection()
1402 {
1403         d->cursor_.clearSelection();
1404         // Clear the selection buffer. Otherwise a subsequent
1405         // middle-mouse-button paste would use the selection buffer,
1406         // not the more current external selection.
1407         cap::clearSelection();
1408         d->xsel_cache_.set = false;
1409         // The buffer did not really change, but this causes the
1410         // redraw we need because we cleared the selection above.
1411         buffer_.changed();
1412 }
1413
1414
1415 void BufferView::resize(int width, int height)
1416 {
1417         // Update from work area
1418         width_ = width;
1419         height_ = height;
1420
1421         updateMetrics(false);
1422 }
1423
1424
1425 Inset const * BufferView::getCoveringInset(Text const & text, int x, int y)
1426 {
1427         TextMetrics & tm = d->text_metrics_[&text];
1428         Inset * inset = tm.checkInsetHit(x, y);
1429         if (!inset)
1430                 return 0;
1431
1432         if (!inset->descendable())
1433                 // No need to go further down if the inset is not
1434                 // descendable.
1435                 return inset;
1436
1437         size_t cell_number = inset->nargs();
1438         // Check all the inner cell.
1439         for (size_t i = 0; i != cell_number; ++i) {
1440                 Text const * inner_text = inset->getText(i);
1441                 if (inner_text) {
1442                         // Try deeper.
1443                         Inset const * inset_deeper =
1444                                 getCoveringInset(*inner_text, x, y);
1445                         if (inset_deeper)
1446                                 return inset_deeper;
1447                 }
1448         }
1449
1450         return inset;
1451 }
1452
1453
1454 void BufferView::mouseEventDispatch(FuncRequest const & cmd0)
1455 {
1456         //lyxerr << BOOST_CURRENT_FUNCTION << "[ cmd0 " << cmd0 << "]" << endl;
1457
1458         // This is only called for mouse related events including
1459         // LFUN_FILE_OPEN generated by drag-and-drop.
1460         FuncRequest cmd = cmd0;
1461
1462         Cursor cur(*this);
1463         cur.push(buffer_.inset());
1464         cur.selection() = d->cursor_.selection();
1465
1466         // Either the inset under the cursor or the
1467         // surrounding Text will handle this event.
1468
1469         // make sure we stay within the screen...
1470         cmd.y = min(max(cmd.y, -1), height_);
1471
1472         if (cmd.action == LFUN_MOUSE_MOTION && cmd.button() == mouse_button::none) {
1473
1474                 // Get inset under mouse, if there is one.
1475                 Inset const * covering_inset =
1476                         getCoveringInset(buffer_.text(), cmd.x, cmd.y);
1477                 if (covering_inset == d->last_inset_)
1478                         // Same inset, no need to do anything...
1479                         return;
1480
1481                 bool need_redraw = false;
1482                 // const_cast because of setMouseHover().
1483                 Inset * inset = const_cast<Inset *>(covering_inset);
1484                 if (d->last_inset_)
1485                         // Remove the hint on the last hovered inset (if any).
1486                         need_redraw |= d->last_inset_->setMouseHover(false);
1487                 if (inset)
1488                         // Highlighted the newly hovered inset (if any).
1489                         need_redraw |= inset->setMouseHover(true);
1490                 d->last_inset_ = inset;
1491                 if (!need_redraw)
1492                         return;
1493
1494                 // if last metrics update was in singlepar mode, WorkArea::redraw() will
1495                 // not expose the button for redraw. We adjust here the metrics dimension
1496                 // to enable a full redraw in any case as this is not costly.
1497                 TextMetrics & tm = d->text_metrics_[&buffer_.text()];
1498                 std::pair<pit_type, ParagraphMetrics const *> firstpm = tm.first();
1499                 std::pair<pit_type, ParagraphMetrics const *> lastpm = tm.last();
1500                 int y1 = firstpm.second->position() - firstpm.second->ascent();
1501                 int y2 = lastpm.second->position() + lastpm.second->descent();
1502                 d->metrics_info_ = ViewMetricsInfo(firstpm.first, lastpm.first, y1, y2,
1503                         FullScreenUpdate, buffer_.text().paragraphs().size());
1504                 // Reinitialize anchor to first pit.
1505                 d->anchor_ref_ = firstpm.first;
1506                 d->offset_ref_ = -y1;
1507                 LYXERR(Debug::PAINTING)
1508                         << "Mouse hover detected at: (" << cmd.x << ", " << cmd.y << ")"
1509                         << "\nTriggering redraw: y1: " << y1 << " y2: " << y2
1510                         << " pit1: " << firstpm.first << " pit2: " << lastpm.first << endl;
1511
1512                 // This event (moving without mouse click) is not passed further.
1513                 // This should be changed if it is further utilized.
1514                 buffer_.changed();
1515                 return;
1516         }
1517
1518         // Build temporary cursor.
1519         Inset * inset = d->text_metrics_[&buffer_.text()].editXY(cur, cmd.x, cmd.y);
1520
1521         // Put anchor at the same position.
1522         cur.resetAnchor();
1523
1524         // Try to dispatch to an non-editable inset near this position
1525         // via the temp cursor. If the inset wishes to change the real
1526         // cursor it has to do so explicitly by using
1527         //  cur.bv().cursor() = cur;  (or similar)
1528         if (inset)
1529                 inset->dispatch(cur, cmd);
1530
1531         // Now dispatch to the temporary cursor. If the real cursor should
1532         // be modified, the inset's dispatch has to do so explicitly.
1533         if (!cur.result().dispatched())
1534                 cur.dispatch(cmd);
1535
1536         //Do we have a selection?
1537         theSelection().haveSelection(cursor().selection());
1538
1539         // If the command has been dispatched,
1540         if (cur.result().dispatched()
1541                 // an update is asked,
1542                 && cur.result().update())
1543                 processUpdateFlags(cur.result().update());
1544 }
1545
1546
1547 void BufferView::scroll(int y)
1548 {
1549         if (y > 0)
1550                 scrollDown(y);
1551         else if (y < 0)
1552                 scrollUp(-y);
1553 }
1554
1555
1556 void BufferView::scrollDown(int offset)
1557 {
1558         Text * text = &buffer_.text();
1559         TextMetrics & tm = d->text_metrics_[text];
1560         int ymax = height_ + offset;
1561         while (true) {
1562                 std::pair<pit_type, ParagraphMetrics const *> last = tm.last();
1563                 int bottom_pos = last.second->position() + last.second->descent();
1564                 if (last.first + 1 == int(text->paragraphs().size())) {
1565                         if (bottom_pos <= height_)
1566                                 return;
1567                         offset = min(offset, bottom_pos - height_);
1568                         break;
1569                 }
1570                 if (bottom_pos > ymax)
1571                         break;
1572                 tm.newParMetricsDown();
1573         }
1574         d->offset_ref_ += offset;
1575         updateMetrics(false);
1576         buffer_.changed();
1577 }
1578
1579
1580 void BufferView::scrollUp(int offset)
1581 {
1582         Text * text = &buffer_.text();
1583         TextMetrics & tm = d->text_metrics_[text];
1584         int ymin = - offset;
1585         while (true) {
1586                 std::pair<pit_type, ParagraphMetrics const *> first = tm.first();
1587                 int top_pos = first.second->position() - first.second->ascent();
1588                 if (first.first == 0) {
1589                         if (top_pos >= 0)
1590                                 return;
1591                         offset = min(offset, - top_pos);
1592                         break;
1593                 }
1594                 if (top_pos < ymin)
1595                         break;
1596                 tm.newParMetricsUp();
1597         }
1598         d->offset_ref_ -= offset;
1599         updateMetrics(false);
1600         buffer_.changed();
1601 }
1602
1603
1604 void BufferView::setCursorFromRow(int row)
1605 {
1606         int tmpid = -1;
1607         int tmppos = -1;
1608
1609         buffer_.texrow().getIdFromRow(row, tmpid, tmppos);
1610
1611         d->cursor_.reset(buffer_.inset());
1612         if (tmpid == -1)
1613                 buffer_.text().setCursor(d->cursor_, 0, 0);
1614         else
1615                 buffer_.text().setCursor(d->cursor_, buffer_.getParFromID(tmpid).pit(), tmppos);
1616 }
1617
1618
1619 void BufferView::gotoLabel(docstring const & label)
1620 {
1621         for (InsetIterator it = inset_iterator_begin(buffer_.inset()); it; ++it) {
1622                 vector<docstring> labels;
1623                 it->getLabelList(buffer_, labels);
1624                 if (std::find(labels.begin(), labels.end(), label) != labels.end()) {
1625                         setCursor(it);
1626                         processUpdateFlags(Update::FitCursor);
1627                         return;
1628                 }
1629         }
1630 }
1631
1632
1633 TextMetrics const & BufferView::textMetrics(Text const * t) const
1634 {
1635         return const_cast<BufferView *>(this)->textMetrics(t);
1636 }
1637
1638
1639 TextMetrics & BufferView::textMetrics(Text const * t)
1640 {
1641         TextMetricsCache::iterator tmc_it  = d->text_metrics_.find(t);
1642         if (tmc_it == d->text_metrics_.end()) {
1643                 tmc_it = d->text_metrics_.insert(
1644                         make_pair(t, TextMetrics(this, const_cast<Text *>(t)))).first;
1645         }
1646         return tmc_it->second;
1647 }
1648
1649
1650 ParagraphMetrics const & BufferView::parMetrics(Text const * t,
1651                 pit_type pit) const
1652 {
1653         return textMetrics(t).parMetrics(pit);
1654 }
1655
1656
1657 int BufferView::workHeight() const
1658 {
1659         return height_;
1660 }
1661
1662
1663 void BufferView::setCursor(DocIterator const & dit)
1664 {
1665         size_t const n = dit.depth();
1666         for (size_t i = 0; i < n; ++i)
1667                 dit[i].inset().edit(d->cursor_, true);
1668
1669         d->cursor_.setCursor(dit);
1670         d->cursor_.selection() = false;
1671 }
1672
1673
1674 bool BufferView::checkDepm(Cursor & cur, Cursor & old)
1675 {
1676         // Would be wrong to delete anything if we have a selection.
1677         if (cur.selection())
1678                 return false;
1679
1680         bool need_anchor_change = false;
1681         bool changed = d->cursor_.text()->deleteEmptyParagraphMechanism(cur, old,
1682                 need_anchor_change);
1683
1684         if (need_anchor_change)
1685                 cur.resetAnchor();
1686
1687         if (!changed)
1688                 return false;
1689
1690         updateLabels(buffer_);
1691
1692         updateMetrics(false);
1693         buffer_.changed();
1694         return true;
1695 }
1696
1697
1698 bool BufferView::mouseSetCursor(Cursor & cur, bool select)
1699 {
1700         BOOST_ASSERT(&cur.bv() == this);
1701
1702         if (!select)
1703                 // this event will clear selection so we save selection for
1704                 // persistent selection
1705                 cap::saveSelection(cursor());
1706
1707         // Has the cursor just left the inset?
1708         bool badcursor = false;
1709         bool leftinset = (&d->cursor_.inset() != &cur.inset());
1710         if (leftinset)
1711                 badcursor = notifyCursorLeaves(d->cursor_, cur);
1712
1713         // FIXME: shift-mouse selection doesn't work well across insets.
1714         bool do_selection = select && &d->cursor_.anchor().inset() == &cur.inset();
1715
1716         // do the dEPM magic if needed
1717         // FIXME: (1) move this to InsetText::notifyCursorLeaves?
1718         // FIXME: (2) if we had a working InsetText::notifyCursorLeaves,
1719         // the leftinset bool would not be necessary (badcursor instead).
1720         bool update = leftinset;
1721         if (!do_selection && !badcursor && d->cursor_.inTexted())
1722                 update |= checkDepm(cur, d->cursor_);
1723
1724         // if the cursor was in an empty script inset and the new
1725         // position is in the nucleus of the inset, notifyCursorLeaves
1726         // will kill the script inset itself. So we check all the
1727         // elements of the cursor to make sure that they are correct.
1728         // For an example, see bug 2933:
1729         // http://bugzilla.lyx.org/show_bug.cgi?id=2933
1730         // The code below could maybe be moved to a DocIterator method.
1731         //lyxerr << "cur before " << cur <<std::endl;
1732         DocIterator dit(cur.inset());
1733         dit.push_back(cur.bottom());
1734         size_t i = 1;
1735         while (i < cur.depth() && dit.nextInset() == &cur[i].inset()) {
1736                 dit.push_back(cur[i]);
1737                 ++i;
1738         }
1739         //lyxerr << "5 cur after" << dit <<std::endl;
1740
1741         d->cursor_.setCursor(dit);
1742         d->cursor_.boundary(cur.boundary());
1743         if (do_selection)
1744                 d->cursor_.setSelection();
1745         else
1746                 d->cursor_.clearSelection();
1747
1748         d->cursor_.finishUndo();
1749         return update;
1750 }
1751
1752
1753 void BufferView::putSelectionAt(DocIterator const & cur,
1754                                 int length, bool backwards)
1755 {
1756         d->cursor_.clearSelection();
1757
1758         setCursor(cur);
1759
1760         if (length) {
1761                 if (backwards) {
1762                         d->cursor_.pos() += length;
1763                         d->cursor_.setSelection(d->cursor_, -length);
1764                 } else
1765                         d->cursor_.setSelection(d->cursor_, length);
1766         }
1767 }
1768
1769
1770 Cursor & BufferView::cursor()
1771 {
1772         return d->cursor_;
1773 }
1774
1775
1776 Cursor const & BufferView::cursor() const
1777 {
1778         return d->cursor_;
1779 }
1780
1781
1782 pit_type BufferView::anchor_ref() const
1783 {
1784         return d->anchor_ref_;
1785 }
1786
1787
1788 ViewMetricsInfo const & BufferView::viewMetricsInfo()
1789 {
1790         return d->metrics_info_;
1791 }
1792
1793
1794 bool BufferView::singleParUpdate()
1795 {
1796         Text & buftext = buffer_.text();
1797         pit_type const bottom_pit = d->cursor_.bottom().pit();
1798         TextMetrics & tm = textMetrics(&buftext);
1799         int old_height = tm.parMetrics(bottom_pit).height();
1800
1801         // In Single Paragraph mode, rebreak only
1802         // the (main text, not inset!) paragraph containing the cursor.
1803         // (if this paragraph contains insets etc., rebreaking will
1804         // recursively descend)
1805         tm.redoParagraph(bottom_pit);
1806         ParagraphMetrics const & pm = tm.parMetrics(bottom_pit);
1807         if (pm.height() != old_height)
1808                 // Paragraph height has changed so we cannot proceed to
1809                 // the singlePar optimisation.
1810                 return false;
1811
1812         int y1 = pm.position() - pm.ascent();
1813         int y2 = pm.position() + pm.descent();
1814         d->metrics_info_ = ViewMetricsInfo(bottom_pit, bottom_pit, y1, y2,
1815                 SingleParUpdate, buftext.paragraphs().size());
1816         LYXERR(Debug::PAINTING)
1817                 << BOOST_CURRENT_FUNCTION
1818                 << "\ny1: " << y1
1819                 << " y2: " << y2
1820                 << " pit: " << bottom_pit
1821                 << " singlepar: 1"
1822                 << endl;
1823         return true;
1824 }
1825
1826
1827 void BufferView::updateMetrics(bool singlepar)
1828 {
1829         if (singlepar && singleParUpdate())
1830                 // No need to update the full screen metrics.
1831                 return;
1832
1833         Text & buftext = buffer_.text();
1834         pit_type const npit = int(buftext.paragraphs().size());
1835
1836         if (d->anchor_ref_ > int(npit - 1)) {
1837                 d->anchor_ref_ = int(npit - 1);
1838                 d->offset_ref_ = 0;
1839         }
1840
1841         // Clear out the position cache in case of full screen redraw,
1842         d->coord_cache_.clear();
1843
1844         // Clear out paragraph metrics to avoid having invalid metrics
1845         // in the cache from paragraphs not relayouted below
1846         // The complete text metrics will be redone.
1847         d->text_metrics_.clear();
1848
1849         TextMetrics & tm = textMetrics(&buftext);
1850
1851         pit_type const pit = d->anchor_ref_;
1852         int pit1 = pit;
1853         int pit2 = pit;
1854
1855         // Rebreak anchor paragraph.
1856         tm.redoParagraph(pit);
1857
1858         // Take care of anchor offset if case a recentering is needed.
1859         updateOffsetRef();
1860
1861         int y0 = tm.parMetrics(pit).ascent() - d->offset_ref_;
1862
1863         // Redo paragraphs above anchor if necessary.
1864         int y1 = y0;
1865         while (y1 > 0 && pit1 > 0) {
1866                 y1 -= tm.parMetrics(pit1).ascent();
1867                 --pit1;
1868                 tm.redoParagraph(pit1);
1869                 y1 -= tm.parMetrics(pit1).descent();
1870         }
1871
1872         // Take care of ascent of first line
1873         y1 -= tm.parMetrics(pit1).ascent();
1874
1875         // Normalize anchor for next time
1876         d->anchor_ref_ = pit1;
1877         d->offset_ref_ = -y1;
1878
1879         // Grey at the beginning is ugly
1880         if (pit1 == 0 && y1 > 0) {
1881                 y0 -= y1;
1882                 y1 = 0;
1883                 d->anchor_ref_ = 0;
1884         }
1885
1886         // Redo paragraphs below the anchor if necessary.
1887         int y2 = y0;
1888         while (y2 < height_ && pit2 < int(npit) - 1) {
1889                 y2 += tm.parMetrics(pit2).descent();
1890                 ++pit2;
1891                 tm.redoParagraph(pit2);
1892                 y2 += tm.parMetrics(pit2).ascent();
1893         }
1894
1895         // Take care of descent of last line
1896         y2 += tm.parMetrics(pit2).descent();
1897
1898         LYXERR(Debug::PAINTING)
1899                 << BOOST_CURRENT_FUNCTION
1900                 << "\n y1: " << y1
1901                 << " y2: " << y2
1902                 << " pit1: " << pit1
1903                 << " pit2: " << pit2
1904                 << " npit: " << npit
1905                 << " singlepar: 0"
1906                 << endl;
1907
1908         d->metrics_info_ = ViewMetricsInfo(pit1, pit2, y1, y2,
1909                 FullScreenUpdate, npit);
1910
1911         if (lyxerr.debugging(Debug::WORKAREA)) {
1912                 LYXERR(Debug::WORKAREA) << "BufferView::updateMetrics" << endl;
1913                 d->coord_cache_.dump();
1914         }
1915 }
1916
1917
1918 void BufferView::menuInsertLyXFile(string const & filenm)
1919 {
1920         BOOST_ASSERT(d->cursor_.inTexted());
1921         string filename = filenm;
1922
1923         if (filename.empty()) {
1924                 // Launch a file browser
1925                 // FIXME UNICODE
1926                 string initpath = lyxrc.document_path;
1927                 string const trypath = buffer_.filePath();
1928                 // If directory is writeable, use this as default.
1929                 if (FileName(trypath).isDirWritable())
1930                         initpath = trypath;
1931
1932                 // FIXME UNICODE
1933                 FileDialog fileDlg(_("Select LyX document to insert"),
1934                         LFUN_FILE_INSERT,
1935                         make_pair(_("Documents|#o#O"), from_utf8(lyxrc.document_path)),
1936                         make_pair(_("Examples|#E#e"),
1937                                     from_utf8(addPath(package().system_support().absFilename(),
1938                                     "examples"))));
1939
1940                 FileDialog::Result result =
1941                         fileDlg.open(from_utf8(initpath),
1942                                      FileFilterList(_("LyX Documents (*.lyx)")),
1943                                      docstring());
1944
1945                 if (result.first == FileDialog::Later)
1946                         return;
1947
1948                 // FIXME UNICODE
1949                 filename = to_utf8(result.second);
1950
1951                 // check selected filename
1952                 if (filename.empty()) {
1953                         // emit message signal.
1954                         message(_("Canceled."));
1955                         return;
1956                 }
1957         }
1958
1959         // Get absolute path of file and add ".lyx"
1960         // to the filename if necessary
1961         filename = fileSearch(string(), filename, "lyx").absFilename();
1962
1963         docstring const disp_fn = makeDisplayPath(filename);
1964         // emit message signal.
1965         message(bformat(_("Inserting document %1$s..."), disp_fn));
1966
1967         docstring res;
1968         Buffer buf("", false);
1969         if (lyx::loadLyXFile(&buf, FileName(filename))) {
1970                 ErrorList & el = buffer_.errorList("Parse");
1971                 // Copy the inserted document error list into the current buffer one.
1972                 el = buf.errorList("Parse");
1973                 buffer_.undo().recordUndo(d->cursor_);
1974                 cap::pasteParagraphList(d->cursor_, buf.paragraphs(),
1975                                              buf.params().getTextClassPtr(), el);
1976                 res = _("Document %1$s inserted.");
1977         } else
1978                 res = _("Could not insert document %1$s");
1979
1980         // emit message signal.
1981         message(bformat(res, disp_fn));
1982         buffer_.errors("Parse");
1983         updateMetrics(false);
1984 }
1985
1986
1987 Point BufferView::coordOffset(DocIterator const & dit, bool boundary) const
1988 {
1989         int x = 0;
1990         int y = 0;
1991         int lastw = 0;
1992
1993         // Addup contribution of nested insets, from inside to outside,
1994         // keeping the outer paragraph for a special handling below
1995         for (size_t i = dit.depth() - 1; i >= 1; --i) {
1996                 CursorSlice const & sl = dit[i];
1997                 int xx = 0;
1998                 int yy = 0;
1999
2000                 // get relative position inside sl.inset()
2001                 sl.inset().cursorPos(*this, sl, boundary && (i + 1 == dit.depth()), xx, yy);
2002
2003                 // Make relative position inside of the edited inset relative to sl.inset()
2004                 x += xx;
2005                 y += yy;
2006
2007                 // In case of an RTL inset, the edited inset will be positioned to the left
2008                 // of xx:yy
2009                 if (sl.text()) {
2010                         bool boundary_i = boundary && i + 1 == dit.depth();
2011                         bool rtl = textMetrics(sl.text()).isRTL(sl, boundary_i);
2012                         if (rtl)
2013                                 x -= lastw;
2014                 }
2015
2016                 // remember width for the case that sl.inset() is positioned in an RTL inset
2017                 if (i && dit[i - 1].text()) {
2018                         // If this Inset is inside a Text Inset, retrieve the Dimension
2019                         // from the containing text instead of using Inset::dimension() which
2020                         // might not be implemented.
2021                         // FIXME (Abdel 23/09/2007): this is a bit messy because of the
2022                         // elimination of Inset::dim_ cache. This coordOffset() method needs
2023                         // to be rewritten in light of the new design.
2024                         Dimension const & dim = parMetrics(dit[i - 1].text(),
2025                                 dit[i - 1].pit()).insetDimension(&sl.inset());
2026                         lastw = dim.wid;
2027                 } else {
2028                         Dimension const dim = sl.inset().dimension(*this);
2029                         lastw = dim.wid;
2030                 }
2031
2032                 //lyxerr << "Cursor::getPos, i: "
2033                 // << i << " x: " << xx << " y: " << y << endl;
2034         }
2035
2036         // Add contribution of initial rows of outermost paragraph
2037         CursorSlice const & sl = dit[0];
2038         TextMetrics const & tm = textMetrics(sl.text());
2039         ParagraphMetrics const & pm = tm.parMetrics(sl.pit());
2040         BOOST_ASSERT(!pm.rows().empty());
2041         y -= pm.rows()[0].ascent();
2042 #if 1
2043         // FIXME: document this mess
2044         size_t rend;
2045         if (sl.pos() > 0 && dit.depth() == 1) {
2046                 int pos = sl.pos();
2047                 if (pos && boundary)
2048                         --pos;
2049 //              lyxerr << "coordOffset: boundary:" << boundary << " depth:" << dit.depth() << " pos:" << pos << " sl.pos:" << sl.pos() << std::endl;
2050                 rend = pm.pos2row(pos);
2051         } else
2052                 rend = pm.pos2row(sl.pos());
2053 #else
2054         size_t rend = pm.pos2row(sl.pos());
2055 #endif
2056         for (size_t rit = 0; rit != rend; ++rit)
2057                 y += pm.rows()[rit].height();
2058         y += pm.rows()[rend].ascent();
2059
2060         TextMetrics const & bottom_tm = textMetrics(dit.bottom().text());
2061
2062         // Make relative position from the nested inset now bufferview absolute.
2063         int xx = bottom_tm.cursorX(dit.bottom(), boundary && dit.depth() == 1);
2064         x += xx;
2065
2066         // In the RTL case place the nested inset at the left of the cursor in
2067         // the outer paragraph
2068         bool boundary_1 = boundary && 1 == dit.depth();
2069         bool rtl = bottom_tm.isRTL(dit.bottom(), boundary_1);
2070         if (rtl)
2071                 x -= lastw;
2072
2073         return Point(x, y);
2074 }
2075
2076
2077 Point BufferView::getPos(DocIterator const & dit, bool boundary) const
2078 {
2079         CursorSlice const & bot = dit.bottom();
2080         TextMetrics const & tm = textMetrics(bot.text());
2081         if (!tm.has(bot.pit()))
2082                 return Point(-1, -1);
2083
2084         Point p = coordOffset(dit, boundary); // offset from outer paragraph
2085         p.y_ += tm.parMetrics(bot.pit()).position();
2086         return p;
2087 }
2088
2089
2090 void BufferView::draw(frontend::Painter & pain)
2091 {
2092         PainterInfo pi(this, pain);
2093         // Should the whole screen, including insets, be refreshed?
2094         // FIXME: We should also distinguish DecorationUpdate to avoid text
2095         // drawing if possible. This is not possible to do easily right now
2096         // because of the single backing pixmap.
2097         pi.full_repaint = d->metrics_info_.update_strategy != SingleParUpdate;
2098
2099         if (pi.full_repaint)
2100                 // Clear background (if not delegated to rows)
2101                 pain.fillRectangle(0, d->metrics_info_.y1, width_,
2102                         d->metrics_info_.y2 - d->metrics_info_.y1,
2103                         buffer_.inset().backgroundColor());
2104
2105         LYXERR(Debug::PAINTING) << "\t\t*** START DRAWING ***" << endl;
2106         Text & text = buffer_.text();
2107         TextMetrics const & tm = d->text_metrics_[&text];
2108         int y = d->metrics_info_.y1 + tm.parMetrics(d->metrics_info_.p1).ascent();
2109         if (!pi.full_repaint)
2110                 tm.drawParagraph(pi, d->metrics_info_.p1, 0, y);
2111         else
2112                 tm.draw(pi, 0, y);
2113         LYXERR(Debug::PAINTING) << "\n\t\t*** END DRAWING  ***" << endl;
2114
2115         // and grey out above (should not happen later)
2116 //      lyxerr << "par ascent: " << text.getPar(d->metrics_info_.p1).ascent() << endl;
2117         if (d->metrics_info_.y1 > 0
2118                 && d->metrics_info_.update_strategy == FullScreenUpdate)
2119                 pain.fillRectangle(0, 0, width_, d->metrics_info_.y1, Color::bottomarea);
2120
2121         // and possibly grey out below
2122 //      lyxerr << "par descent: " << text.getPar(d->metrics_info_.p1).ascent() << endl;
2123         if (d->metrics_info_.y2 < height_
2124                 && d->metrics_info_.update_strategy == FullScreenUpdate)
2125                 pain.fillRectangle(0, d->metrics_info_.y2, width_,
2126                         height_ - d->metrics_info_.y2, Color::bottomarea);
2127 }
2128
2129
2130 void BufferView::message(docstring const & msg)
2131 {
2132         if (d->gui_)
2133                 d->gui_->message(msg);
2134 }
2135
2136
2137 void BufferView::showDialog(std::string const & name)
2138 {
2139         if (d->gui_)
2140                 d->gui_->showDialog(name);
2141 }
2142
2143
2144 void BufferView::showDialogWithData(std::string const & name,
2145         std::string const & data)
2146 {
2147         if (d->gui_)
2148                 d->gui_->showDialogWithData(name, data);
2149 }
2150
2151
2152 void BufferView::showInsetDialog(std::string const & name,
2153         std::string const & data, Inset * inset)
2154 {
2155         if (d->gui_)
2156                 d->gui_->showInsetDialog(name, data, inset);
2157 }
2158
2159
2160 void BufferView::updateDialog(std::string const & name, std::string const & data)
2161 {
2162         if (d->gui_)
2163                 d->gui_->updateDialog(name, data);
2164 }
2165
2166
2167 void BufferView::setGuiDelegate(frontend::GuiBufferViewDelegate * gui)
2168 {
2169         d->gui_ = gui;
2170 }
2171
2172
2173 // FIXME: Move this out of BufferView again
2174 docstring BufferView::contentsOfPlaintextFile(string const & f,
2175         bool asParagraph)
2176 {
2177         FileName fname(f);
2178
2179         if (fname.empty()) {
2180                 FileDialog fileDlg(_("Select file to insert"),
2181                                    ( asParagraph
2182                                      ? LFUN_FILE_INSERT_PLAINTEXT_PARA
2183                                      : LFUN_FILE_INSERT_PLAINTEXT) );
2184
2185                 FileDialog::Result result =
2186                         fileDlg.open(from_utf8(buffer().filePath()),
2187                                      FileFilterList(), docstring());
2188
2189                 if (result.first == FileDialog::Later)
2190                         return docstring();
2191
2192                 fname = makeAbsPath(to_utf8(result.second));
2193
2194                 if (fname.empty())
2195                         return docstring();
2196         }
2197
2198         if (!fs::is_readable(fname.toFilesystemEncoding())) {
2199                 docstring const error = from_ascii(strerror(errno));
2200                 docstring const file = makeDisplayPath(fname.absFilename(), 50);
2201                 docstring const text =
2202                   bformat(_("Could not read the specified document\n"
2203                             "%1$s\ndue to the error: %2$s"), file, error);
2204                 Alert::error(_("Could not read file"), text);
2205                 return docstring();
2206         }
2207
2208         ifstream ifs(fname.toFilesystemEncoding().c_str());
2209         if (!ifs) {
2210                 docstring const error = from_ascii(strerror(errno));
2211                 docstring const file = makeDisplayPath(fname.absFilename(), 50);
2212                 docstring const text =
2213                   bformat(_("Could not open the specified document\n"
2214                             "%1$s\ndue to the error: %2$s"), file, error);
2215                 Alert::error(_("Could not open file"), text);
2216                 return docstring();
2217         }
2218
2219         ifs.unsetf(std::ios::skipws);
2220         istream_iterator<char> ii(ifs);
2221         istream_iterator<char> end;
2222 #if !defined(USE_INCLUDED_STRING) && !defined(STD_STRING_IS_GOOD)
2223         // We use this until the compilers get better...
2224         std::vector<char> tmp;
2225         copy(ii, end, back_inserter(tmp));
2226         string const tmpstr(tmp.begin(), tmp.end());
2227 #else
2228         // This is what we want to use and what we will use once the
2229         // compilers get good enough.
2230         //string tmpstr(ii, end); // yet a reason for using std::string
2231         // alternate approach to get the file into a string:
2232         string tmpstr;
2233         copy(ii, end, back_inserter(tmpstr));
2234 #endif
2235
2236         // FIXME UNICODE: We don't know the encoding of the file
2237         docstring file_content = from_utf8(tmpstr);
2238         if (file_content.empty()) {
2239                 Alert::error(_("Reading not UTF-8 encoded file"),
2240                              _("The file is not UTF-8 encoded.\n"
2241                                "It will be read as local 8Bit-encoded.\n"
2242                                "If this does not give the correct result\n"
2243                                "then please change the encoding of the file\n"
2244                                "to UTF-8 with a program other than LyX.\n"));
2245                 file_content = from_local8bit(tmpstr);
2246         }
2247
2248         return normalize_c(file_content);
2249 }
2250
2251
2252 void BufferView::insertPlaintextFile(string const & f, bool asParagraph)
2253 {
2254         docstring const tmpstr = contentsOfPlaintextFile(f, asParagraph);
2255
2256         if (tmpstr.empty())
2257                 return;
2258
2259         Cursor & cur = cursor();
2260         cap::replaceSelection(cur);
2261         buffer_.undo().recordUndo(cur);
2262         if (asParagraph)
2263                 cur.innerText()->insertStringAsParagraphs(cur, tmpstr);
2264         else
2265                 cur.innerText()->insertStringAsLines(cur, tmpstr);
2266 }
2267
2268 } // namespace lyx