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