src/paragraph_pimpl.C

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