src/paragraph_pimpl.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *
   6  *           Copyright 1995 Matthias Ettrich
   7  *           Copyright 1995-2001 The LyX Team.
   8  *
   9  * ====================================================== */
  10
  11 #include <config.h>
  12
  13 #include "paragraph_pimpl.h"
  14
  15 #include "bufferparams.h"
  16 #include "debug.h"
  17 #include "encoding.h"
  18 #include "language.h"
  19 #include "LaTeXFeatures.h"
  20 #include "latexrunparams.h"
  21 #include "lyxrc.h"
  22 #include "paragraph_funcs.h"
  23 #include "texrow.h"
  24
  25 #include "support/LAssert.h"
  26
  27 using lyx::pos_type;
  28 using std::endl;
  29 using std::ostream;
  30 using std::upper_bound;
  31 using std::lower_bound;
  32
  33 // Initialize static member.
  34 ShareContainer<LyXFont> Paragraph::Pimpl::FontTable::container;
  35 // Initialization of the counter for the paragraph id's,
  36 unsigned int Paragraph::Pimpl::paragraph_id = 0;
  37
  38 namespace {
  39
  40 struct special_phrase {
  41         string phrase;
  42         string macro;
  43         bool builtin;
  44 };
  45
  46 special_phrase special_phrases[] = {
  47         { "LyX", "\\LyX{}", false },
  48         { "TeX", "\\TeX{}", true },
  49         { "LaTeX2e", "\\LaTeXe{}", true },
  50         { "LaTeX", "\\LaTeX{}", true },
  51 };
  52
  53 size_t const phrases_nr = sizeof(special_phrases)/sizeof(special_phrase);
  54
  55 } // namespace anon
  56
  57
  58 Paragraph::Pimpl::Pimpl(Paragraph * owner)
  59         : owner_(owner)
  60 {
  61         inset_owner = 0;
  62         id_ = paragraph_id++;
  63 }
  64
  65
  66 Paragraph::Pimpl::Pimpl(Pimpl const & p, Paragraph * owner, bool same_ids)
  67         : params(p.params), owner_(owner)
  68 {
  69         inset_owner = p.inset_owner;
  70         text = p.text;
  71         fontlist = p.fontlist;
  72         if (same_ids)
  73                 id_ = p.id_;
  74         else
  75                 id_ = paragraph_id++;
  76
  77         if (p.tracking())
  78                 changes_.reset(new Changes(*p.changes_.get()));
  79 }
  80
  81
  82 void Paragraph::Pimpl::clear()
  83 {
  84         text.clear();
  85 #warning changes ?
  86 }
  87
  88
  89 void Paragraph::Pimpl::setContentsFromPar(Paragraph const & par)
  90 {
  91         text = par.pimpl_->text;
  92         if (par.pimpl_->tracking()) {
  93                 changes_.reset(new Changes(*(par.pimpl_->changes_.get())));
  94         }
  95 }
  96
  97
  98 void Paragraph::Pimpl::trackChanges(Change::Type type)
  99 {
 100         if (tracking()) {
 101                 lyxerr[Debug::CHANGES] << "already tracking for par " << id_ << endl;
 102                 return;
 103         }
 104
 105         lyxerr[Debug::CHANGES] << "track changes for par "
 106                 << id_ << " type " << type << endl;
 107         changes_.reset(new Changes(type));
 108         changes_->set(type, 0, size());
 109 }
 110
 111
 112 void Paragraph::Pimpl::untrackChanges()
 113 {
 114         changes_.reset(0);
 115 }
 116
 117
 118 void Paragraph::Pimpl::cleanChanges()
 119 {
 120         // if we're not tracking, we don't want to reset...
 121         if (!tracking())
 122                 return;
 123
 124         changes_.reset(new Changes(Change::INSERTED));
 125         changes_->set(Change::INSERTED, 0, size());
 126 }
 127
 128
 129 bool Paragraph::Pimpl::isChanged(pos_type start, pos_type end) const
 130 {
 131         if (!tracking())
 132                 return false;
 133
 134         return changes_->isChange(start, end);
 135 }
 136
 137
 138 bool Paragraph::Pimpl::isChangeEdited(pos_type start, pos_type end) const
 139 {
 140         if (!tracking())
 141                 return false;
 142
 143         return changes_->isChangeEdited(start, end);
 144 }
 145
 146
 147 void Paragraph::Pimpl::setChange(pos_type pos, Change::Type type)
 148 {
 149         if (!tracking())
 150                 return;
 151
 152         changes_->set(type, pos);
 153 }
 154
 155
 156 Change::Type Paragraph::Pimpl::lookupChange(pos_type pos) const
 157 {
 158         if (!tracking())
 159                 return Change::UNCHANGED;
 160
 161         return changes_->lookup(pos);
 162 }
 163
 164
 165 Change const Paragraph::Pimpl::lookupChangeFull(pos_type pos) const
 166 {
 167         if (!tracking())
 168                 return Change(Change::UNCHANGED);
 169
 170         return changes_->lookupFull(pos);
 171 }
 172
 173
 174 void Paragraph::Pimpl::markErased()
 175 {
 176         lyx::Assert(tracking());
 177
 178         // FIXME: we should actually remove INSERTED chars.
 179         // difficult because owning insettexts/tabulars need
 180         // to update themselves when rows etc. change
 181         changes_->set(Change::DELETED, 0, size());
 182         changes_->reset(Change::DELETED);
 183 }
 184
 185
 186 void Paragraph::Pimpl::acceptChange(pos_type start, pos_type end)
 187 {
 188         if (!tracking())
 189                 return;
 190
 191         if (!size()) {
 192                 changes_.reset(new Changes(Change::UNCHANGED));
 193                 return;
 194         }
 195
 196         lyxerr << "acceptchange" << endl;
 197         pos_type i = start;
 198
 199         for (; i < end; ++i) {
 200                 switch (lookupChange(i)) {
 201                         case Change::UNCHANGED:
 202                                 break;
 203
 204                         case Change::INSERTED:
 205                                 changes_->set(Change::UNCHANGED, i);
 206                                 break;
 207
 208                         case Change::DELETED:
 209                                 eraseIntern(i);
 210                                 changes_->erase(i);
 211                                 --end;
 212                                 --i;
 213                                 break;
 214                 }
 215         }
 216
 217         lyxerr << "endacceptchange" << endl;
 218         changes_->reset(Change::UNCHANGED);
 219 }
 220
 221
 222 void Paragraph::Pimpl::rejectChange(pos_type start, pos_type end)
 223 {
 224         if (!tracking())
 225                 return;
 226
 227         if (!size()) {
 228                 changes_.reset(new Changes(Change::UNCHANGED));
 229                 return;
 230         }
 231
 232         pos_type i = start;
 233
 234         for (; i < end; ++i) {
 235                 switch (lookupChange(i)) {
 236                         case Change::UNCHANGED:
 237                                 break;
 238
 239                         case Change::INSERTED:
 240                                 eraseIntern(i);
 241                                 changes_->erase(i);
 242                                 --end;
 243                                 --i;
 244                                 break;
 245
 246                         case Change::DELETED:
 247                                 changes_->set(Change::UNCHANGED, i);
 248                                 break;
 249                 }
 250         }
 251         changes_->reset(Change::UNCHANGED);
 252 }
 253
 254
 255 Paragraph::value_type Paragraph::Pimpl::getChar(pos_type pos) const
 256 {
 257 #if 1
 258         // This is in the critical path for loading!
 259         pos_type const siz = size();
 260
 261         lyx::Assert(pos <= siz);
 262
 263         if (pos == siz) {
 264                 lyxerr << "getChar() on pos " << pos << " in par id "
 265                        << owner_->id() << " of size " << siz
 266                        << "  is a bit silly !" << endl;
 267                 return '\0';
 268         }
 269
 270         return text[pos];
 271 #else
 272         lyx::Assert(pos < size());
 273         return text[pos];
 274 #endif
 275 }
 276
 277
 278 void Paragraph::Pimpl::setChar(pos_type pos, value_type c)
 279 {
 280 #warning changes
 281         text[pos] = c;
 282 }
 283
 284
 285 void Paragraph::Pimpl::insertChar(pos_type pos, value_type c,
 286                                   LyXFont const & font, Change change)
 287 {
 288         lyx::Assert(pos <= size());
 289
 290         if (tracking()) {
 291                 changes_->record(change, pos);
 292         }
 293
 294         // This is actually very common when parsing buffers (and
 295         // maybe inserting ascii text)
 296         if (pos == size()) {
 297                 // when appending characters, no need to update tables
 298                 text.push_back(c);
 299                 owner_->setFont(pos, font);
 300                 return;
 301         }
 302
 303         text.insert(text.begin() + pos, c);
 304
 305         // Update the font table.
 306         FontTable search_font(pos, LyXFont());
 307         for (FontList::iterator it = lower_bound(fontlist.begin(),
 308                                                       fontlist.end(),
 309                                                       search_font, matchFT());
 310              it != fontlist.end(); ++it)
 311         {
 312                 it->pos(it->pos() + 1);
 313         }
 314
 315         // Update the insets
 316         owner_->insetlist.increasePosAfterPos(pos);
 317
 318         owner_->setFont(pos, font);
 319 }
 320
 321
 322 void Paragraph::Pimpl::insertInset(pos_type pos,
 323                                    Inset * inset, LyXFont const & font, Change change)
 324 {
 325         lyx::Assert(inset);
 326         lyx::Assert(pos <= size());
 327
 328         insertChar(pos, META_INSET, font, change);
 329         lyx::Assert(text[pos] == META_INSET);
 330
 331         // Add a new entry in the insetlist.
 332         owner_->insetlist.insert(inset, pos);
 333         inset->parOwner(owner_);
 334
 335         if (inset_owner)
 336                 inset->setOwner(inset_owner);
 337 }
 338
 339
 340 void Paragraph::Pimpl::eraseIntern(pos_type pos)
 341 {
 342         // if it is an inset, delete the inset entry
 343         if (text[pos] == Paragraph::META_INSET) {
 344                 owner_->insetlist.erase(pos);
 345         }
 346
 347         text.erase(text.begin() + pos);
 348
 349         // Erase entries in the tables.
 350         FontTable search_font(pos, LyXFont());
 351
 352         FontList::iterator it =
 353                 lower_bound(fontlist.begin(),
 354                             fontlist.end(),
 355                             search_font, matchFT());
 356         if (it != fontlist.end() && it->pos() == pos &&
 357             (pos == 0 ||
 358              (it != fontlist.begin()
 359               && boost::prior(it)->pos() == pos - 1))) {
 360                 // If it is a multi-character font
 361                 // entry, we just make it smaller
 362                 // (see update below), otherwise we
 363                 // should delete it.
 364                 unsigned int const i = it - fontlist.begin();
 365                 fontlist.erase(fontlist.begin() + i);
 366                 it = fontlist.begin() + i;
 367                 if (i > 0 && i < fontlist.size() &&
 368                     fontlist[i - 1].font() == fontlist[i].font()) {
 369                         fontlist.erase(fontlist.begin() + i - 1);
 370                         it = fontlist.begin() + i - 1;
 371                 }
 372         }
 373
 374         // Update all other entries.
 375         FontList::iterator fend = fontlist.end();
 376         for (; it != fend; ++it)
 377                 it->pos(it->pos() - 1);
 378
 379         // Update the insetlist.
 380         owner_->insetlist.decreasePosAfterPos(pos);
 381 }
 382
 383
 384 bool Paragraph::Pimpl::erase(pos_type pos)
 385 {
 386         lyx::Assert(pos < size());
 387
 388         if (tracking()) {
 389                 Change::Type changetype(changes_->lookup(pos));
 390                 changes_->record(Change(Change::DELETED), pos);
 391
 392                 // only allow the actual removal if it was /new/ text
 393                 if (changetype != Change::INSERTED) {
 394                         if (text[pos] == Paragraph::META_INSET) {
 395                                 Inset * i(owner_->getInset(pos));
 396                                 i->markErased();
 397                         }
 398                         return false;
 399                 }
 400         }
 401
 402         eraseIntern(pos);
 403         return true;
 404 }
 405
 406
 407 int Paragraph::Pimpl::erase(pos_type start, pos_type end)
 408 {
 409         pos_type i = start;
 410         pos_type count = end - start;
 411         while (count) {
 412                 if (!erase(i)) {
 413                         ++i;
 414                 }
 415                 --count;
 416         }
 417         return end - i;
 418 }
 419
 420
 421 void Paragraph::Pimpl::simpleTeXBlanks(ostream & os, TexRow & texrow,
 422                                        pos_type const i,
 423                                        unsigned int & column,
 424                                        LyXFont const & font,
 425                                        LyXLayout const & style)
 426 {
 427         if (style.pass_thru)
 428                 return;
 429
 430         if (column > lyxrc.ascii_linelen
 431             && i
 432             && getChar(i - 1) != ' '
 433             && (i < size() - 1)
 434             // same in FreeSpacing mode
 435             && !style.free_spacing
 436                 && !owner_->isFreeSpacing()
 437             // In typewriter mode, we want to avoid
 438             // ! . ? : at the end of a line
 439             && !(font.family() == LyXFont::TYPEWRITER_FAMILY
 440                  && (getChar(i - 1) == '.'
 441                      || getChar(i - 1) == '?'
 442                      || getChar(i - 1) == ':'
 443                      || getChar(i - 1) == '!'))) {
 444                 os << '\n';
 445                 texrow.newline();
 446                 texrow.start(owner_->id(), i + 1);
 447                 column = 0;
 448         } else if (style.free_spacing) {
 449                 os << '~';
 450         } else {
 451                 os << ' ';
 452         }
 453 }
 454
 455
 456 bool Paragraph::Pimpl::isTextAt(string const & str, pos_type pos) const
 457 {
 458         pos_type const len = str.length();
 459
 460         // is the paragraph large enough?
 461         if (pos + len > size())
 462                 return false;
 463
 464         // does the wanted text start at point?
 465         for (string::size_type i = 0; i < str.length(); ++i) {
 466                 if (str[i] != text[pos + i])
 467                         return false;
 468         }
 469
 470         // is there a font change in middle of the word?
 471         FontList::const_iterator cit = fontlist.begin();
 472         FontList::const_iterator end = fontlist.end();
 473         for (; cit != end; ++cit) {
 474                 if (cit->pos() >= pos)
 475                         break;
 476         }
 477         if (cit != end && pos + len - 1 > cit->pos())
 478                 return false;
 479
 480         return true;
 481 }
 482
 483
 484 void Paragraph::Pimpl::simpleTeXSpecialChars(Buffer const * buf,
 485                                              BufferParams const & bparams,
 486                                              ostream & os,
 487                                              TexRow & texrow,
 488                                              LatexRunParams const & runparams,
 489                                              LyXFont & font,
 490                                              LyXFont & running_font,
 491                                              LyXFont & basefont,
 492                                              LyXFont const & outerfont,
 493                                              bool & open_font,
 494                                              Change::Type & running_change,
 495                                              LyXLayout const & style,
 496                                              pos_type & i,
 497                                              unsigned int & column,
 498                                              value_type const c)
 499 {
 500         if (style.pass_thru) {
 501                 if (c != Paragraph::META_INSET) {
 502                         if (c != '\0')
 503                                 os << c;
 504                 } else {
 505                         Inset const * inset = owner_->getInset(i);
 506                         inset->ascii(buf, os, 0);
 507                 }
 508                 return;
 509         }
 510
 511         // Two major modes:  LaTeX or plain
 512         // Handle here those cases common to both modes
 513         // and then split to handle the two modes separately.
 514         switch (c) {
 515         case Paragraph::META_INSET: {
 516                 Inset * inset = owner_->getInset(i);
 517
 518                 // FIXME: remove this check
 519                 if (!inset)
 520                         break;
 521
 522                 // FIXME: move this to InsetNewline::latex
 523                 if (inset->lyxCode() == Inset::NEWLINE_CODE) {
 524                         // newlines are handled differently here than
 525                         // the default in simpleTeXSpecialChars().
 526                         if (!style.newline_allowed) {
 527                                 os << '\n';
 528                         } else {
 529                                 if (open_font) {
 530                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
 531                                         open_font = false;
 532                                 }
 533                                 basefont = owner_->getLayoutFont(bparams, outerfont);
 534                                 running_font = basefont;
 535
 536                                 if (font.family() == LyXFont::TYPEWRITER_FAMILY)
 537                                         os << '~';
 538
 539                                 if (runparams.fragile)
 540                                         os << "\\protect ";
 541
 542                                 os << "\\\\\n";
 543                         }
 544                         texrow.newline();
 545                         texrow.start(owner_->id(), i + 1);
 546                         column = 0;
 547                         break;
 548                 }
 549
 550                 if (inset->isTextInset()) {
 551                         column += Changes::latexMarkChange(os, running_change,
 552                                 Change::UNCHANGED);
 553                         running_change = Change::UNCHANGED;
 554                 }
 555
 556                 bool close = false;
 557                 int const len = os.tellp();
 558                 //ostream::pos_type const len = os.tellp();
 559                 if ((inset->lyxCode() == Inset::GRAPHICS_CODE
 560                      || inset->lyxCode() == Inset::MATH_CODE
 561                      || inset->lyxCode() == Inset::URL_CODE)
 562                     && running_font.isRightToLeft()) {
 563                         os << "\\L{";
 564                         close = true;
 565                 }
 566
 567 #ifdef WITH_WARNINGS
 568 #warning Bug: we can have an empty font change here!
 569 // if there has just been a font change, we are going to close it
 570 // right now, which means stupid latex code like \textsf{}. AFAIK,
 571 // this does not harm dvi output. A minor bug, thus (JMarc)
 572 #endif
 573                 // some insets cannot be inside a font change command
 574                 if (open_font && inset->noFontChange()) {
 575                         column +=running_font.
 576                                 latexWriteEndChanges(os,
 577                                                      basefont,
 578                                                      basefont);
 579                         open_font = false;
 580                         basefont = owner_->getLayoutFont(bparams, outerfont);
 581                         running_font = basefont;
 582                 }
 583
 584                 int tmp = inset->latex(buf, os, runparams,
 585                                        style.free_spacing);
 586
 587                 if (close)
 588                         os << '}';
 589
 590                 if (tmp) {
 591                         for (int j = 0; j < tmp; ++j) {
 592                                 texrow.newline();
 593                         }
 594                         texrow.start(owner_->id(), i + 1);
 595                         column = 0;
 596                 } else {
 597                         column += int(os.tellp()) - len;
 598                 }
 599         }
 600         break;
 601
 602         default:
 603                 // And now for the special cases within each mode
 604
 605                 switch (c) {
 606                 case '\\':
 607                         os << "\\textbackslash{}";
 608                         column += 15;
 609                         break;
 610
 611                 case '±': case '²': case '³':
 612                 case '×': case '÷': case '¹':
 613                 case '¬': case 'µ':
 614                         if ((bparams.inputenc == "latin1" ||
 615                              bparams.inputenc == "latin9") ||
 616                             (bparams.inputenc == "auto" &&
 617                              (font.language()->encoding()->LatexName()
 618                               == "latin1" ||
 619                               font.language()->encoding()->LatexName()
 620                               == "latin9"))) {
 621                                 os << "\\ensuremath{"
 622                                    << c
 623                                    << '}';
 624                                 column += 13;
 625                         } else {
 626                                 os << c;
 627                         }
 628                         break;
 629
 630                 case '|': case '<': case '>':
 631                         // In T1 encoding, these characters exist
 632                         if (lyxrc.fontenc == "T1") {
 633                                 os << c;
 634                                 //... but we should avoid ligatures
 635                                 if ((c == '>' || c == '<')
 636                                     && i <= size() - 2
 637                                     && getChar(i + 1) == c) {
 638                                         //os << "\\textcompwordmark{}";
 639                                         // Jean-Marc, have a look at
 640                                         // this. I think this works
 641                                         // equally well:
 642                                         os << "\\,{}";
 643                                         // Lgb
 644                                         column += 19;
 645                                 }
 646                                 break;
 647                         }
 648                         // Typewriter font also has them
 649                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 650                                 os << c;
 651                                 break;
 652                         }
 653                         // Otherwise, we use what LaTeX
 654                         // provides us.
 655                         switch (c) {
 656                         case '<':
 657                                 os << "\\textless{}";
 658                                 column += 10;
 659                                 break;
 660                         case '>':
 661                                 os << "\\textgreater{}";
 662                                 column += 13;
 663                                 break;
 664                         case '|':
 665                                 os << "\\textbar{}";
 666                                 column += 9;
 667                                 break;
 668                         }
 669                         break;
 670
 671                 case '-': // "--" in Typewriter mode -> "-{}-"
 672                         if (i <= size() - 2
 673                             && getChar(i + 1) == '-'
 674                             && font.family() == LyXFont::TYPEWRITER_FAMILY) {
 675                                 os << "-{}";
 676                                 column += 2;
 677                         } else {
 678                                 os << '-';
 679                         }
 680                         break;
 681
 682                 case '\"':
 683                         os << "\\char`\\\"{}";
 684                         column += 9;
 685                         break;
 686
 687                 case '£':
 688                         if (bparams.inputenc == "default") {
 689                                 os << "\\pounds{}";
 690                                 column += 8;
 691                         } else {
 692                                 os << c;
 693                         }
 694                         break;
 695
 696                 case '$': case '&':
 697                 case '%': case '#': case '{':
 698                 case '}': case '_':
 699                         os << '\\' << c;
 700                         column += 1;
 701                         break;
 702
 703                 case '~':
 704                         os << "\\textasciitilde{}";
 705                         column += 16;
 706                         break;
 707
 708                 case '^':
 709                         os << "\\textasciicircum{}";
 710                         column += 17;
 711                         break;
 712
 713                 case '*': case '[': case ']':
 714                         // avoid being mistaken for optional arguments
 715                         os << '{' << c << '}';
 716                         column += 2;
 717                         break;
 718
 719                 case ' ':
 720                         // Blanks are printed before font switching.
 721                         // Sure? I am not! (try nice-latex)
 722                         // I am sure it's correct. LyX might be smarter
 723                         // in the future, but for now, nothing wrong is
 724                         // written. (Asger)
 725                         break;
 726
 727                 default:
 728
 729                         // I assume this is hack treating typewriter as verbatim
 730                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 731                                 if (c != '\0') {
 732                                         os << c;
 733                                 }
 734                                 break;
 735                         }
 736
 737                         // LyX, LaTeX etc.
 738
 739                         // FIXME: if we have "LaTeX" with a font
 740                         // change in the middle (before the 'T', then
 741                         // the "TeX" part is still special cased.
 742                         // Really we should only operate this on
 743                         // "words" for some definition of word
 744
 745                         size_t pnr = 0;
 746
 747                         for (; pnr < phrases_nr; ++pnr) {
 748                                 if (isTextAt(special_phrases[pnr].phrase, i)) {
 749                                         os << special_phrases[pnr].macro;
 750                                         i += special_phrases[pnr].phrase.length() - 1;
 751                                         column += special_phrases[pnr].macro.length() - 1;
 752                                         break;
 753                                 }
 754                         }
 755
 756                         if (pnr == phrases_nr && c != '\0') {
 757                                 os << c;
 758                         }
 759                         break;
 760                 }
 761         }
 762 }
 763
 764
 765 void Paragraph::Pimpl::validate(LaTeXFeatures & features,
 766                                 LyXLayout const & layout) const
 767 {
 768         BufferParams const & bparams = features.bufferParams();
 769
 770         // check the params.
 771         if (params.lineTop() || params.lineBottom())
 772                 features.require("lyxline");
 773         if (!params.spacing().isDefault())
 774                 features.require("setspace");
 775
 776         // then the layouts
 777         features.useLayout(layout.name());
 778
 779         // then the fonts
 780         Language const * doc_language = bparams.language;
 781
 782         FontList::const_iterator fcit = fontlist.begin();
 783         FontList::const_iterator fend = fontlist.end();
 784         for (; fcit != fend; ++fcit) {
 785                 if (fcit->font().noun() == LyXFont::ON) {
 786                         lyxerr[Debug::LATEX] << "font.noun: "
 787                                              << fcit->font().noun()
 788                                              << endl;
 789                         features.require("noun");
 790                         lyxerr[Debug::LATEX] << "Noun enabled. Font: "
 791                                              << fcit->font().stateText(0)
 792                                              << endl;
 793                 }
 794                 switch (fcit->font().color()) {
 795                 case LColor::none:
 796                 case LColor::inherit:
 797                 case LColor::ignore:
 798                         // probably we should put here all interface colors used for
 799                         // font displaying! For now I just add this ones I know of (Jug)
 800                 case LColor::latex:
 801                 case LColor::note:
 802                         break;
 803                 default:
 804                         features.require("color");
 805                         lyxerr[Debug::LATEX] << "Color enabled. Font: "
 806                                              << fcit->font().stateText(0)
 807                                              << endl;
 808                 }
 809
 810                 Language const * language = fcit->font().language();
 811                 if (language->babel() != doc_language->babel() &&
 812                     language != ignore_language &&
 813                     language != latex_language)
 814                 {
 815                         features.useLanguage(language);
 816                         lyxerr[Debug::LATEX] << "Found language "
 817                                              << language->babel() << endl;
 818                 }
 819         }
 820
 821         if (!params.leftIndent().zero())
 822                 features.require("ParagraphLeftIndent");
 823
 824         // then the insets
 825         InsetList::iterator icit = owner_->insetlist.begin();
 826         InsetList::iterator iend = owner_->insetlist.end();
 827         for (; icit != iend; ++icit) {
 828                 if (icit.getInset()) {
 829                         icit.getInset()->validate(features);
 830                         if (layout.needprotect &&
 831                             icit.getInset()->lyxCode() == Inset::FOOT_CODE)
 832                                 features.require("NeedLyXFootnoteCode");
 833                 }
 834         }
 835
 836         // then the contents
 837         for (pos_type i = 0; i < size() ; ++i) {
 838                 for (size_t pnr = 0; pnr < phrases_nr; ++pnr) {
 839                         if (!special_phrases[pnr].builtin
 840                             && isTextAt(special_phrases[pnr].phrase, i)) {
 841                                 features.require(special_phrases[pnr].phrase);
 842                                 break;
 843                         }
 844                 }
 845         }
 846 }