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