src/paragraph.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 #ifdef __GNUG__
  14 #pragma implementation
  15 #endif
  16
  17 #include "paragraph.h"
  18 #include "paragraph_pimpl.h"
  19 #include "lyxrc.h"
  20 #include "layout.h"
  21 #include "language.h"
  22 #include "tex-strings.h"
  23 #include "buffer.h"
  24 #include "bufferparams.h"
  25 #include "debug.h"
  26 #include "texrow.h"
  27 #include "BufferView.h"
  28 #include "encoding.h"
  29 #include "ParameterStruct.h"
  30 #include "gettext.h"
  31
  32 #include "insets/insetinclude.h"
  33 #include "insets/insetbib.h"
  34 #include "insets/insettext.h"
  35 #include "insets/insetoptarg.h"
  36
  37 #include "support/filetools.h"
  38 #include "support/lstrings.h"
  39 #include "support/lyxmanip.h"
  40 #include "support/FileInfo.h"
  41 #include "support/LAssert.h"
  42 #include "support/textutils.h"
  43
  44 #include <algorithm>
  45 #include <fstream>
  46 #include <csignal>
  47
  48 using std::ostream;
  49 using std::endl;
  50 using std::fstream;
  51 using std::ios;
  52 using std::lower_bound;
  53 using std::upper_bound;
  54 using std::reverse;
  55
  56 using lyx::pos_type;
  57
  58 // this is a bad idea, but how can Paragraph find its buffer to get
  59 // parameters? (JMarc)
  60
  61 extern string bibitemWidest(Buffer const *);
  62
  63 // this is a minibuffer
  64
  65 namespace {
  66
  67 char minibuffer_char;
  68 LyXFont minibuffer_font;
  69 Inset * minibuffer_inset;
  70
  71 } // namespace anon
  72
  73
  74 extern BufferView * current_view;
  75
  76
  77 Paragraph::Paragraph()
  78         : pimpl_(new Paragraph::Pimpl(this))
  79 {
  80 #ifndef NO_NEXT
  81         next_ = 0;
  82         previous_ = 0;
  83 #endif
  84         enumdepth = 0;
  85         itemdepth = 0;
  86         bibkey = 0; // ale970302
  87         params().clear();
  88 }
  89
  90
  91 #ifndef NO_NEXT
  92 // This constructor inserts the new paragraph in a list.
  93 Paragraph::Paragraph(Paragraph * par)
  94         : pimpl_(new Paragraph::Pimpl(this))
  95 {
  96         enumdepth = 0;
  97         itemdepth = 0;
  98
  99         // double linked list begin
 100         next_ = par->next_;
 101         if (next_)
 102                 next_->previous_ = this;
 103         previous_ = par;
 104         previous_->next_ = this;
 105         // end
 106
 107         bibkey = 0; // ale970302
 108         params().clear();
 109 }
 110 #endif
 111
 112
 113 Paragraph::Paragraph(Paragraph const & lp, bool same_ids)
 114         : pimpl_(new Paragraph::Pimpl(*lp.pimpl_, this, same_ids))
 115 {
 116         enumdepth = 0;
 117         itemdepth = 0;
 118 #ifndef NO_NEXT
 119         next_     = 0;
 120         previous_ = 0;
 121 #endif
 122         // this is because of the dummy layout of the paragraphs that
 123         // follow footnotes
 124         layout_ = lp.layout();
 125
 126         // ale970302
 127         if (lp.bibkey) {
 128                 bibkey = static_cast<InsetBibKey *>
 129                         (lp.bibkey->clone(*current_view->buffer()));
 130         } else {
 131                 bibkey = 0;
 132         }
 133
 134         // copy everything behind the break-position to the new paragraph
 135         insetlist = lp.insetlist;
 136         InsetList::iterator it = insetlist.begin();
 137         InsetList::iterator end = insetlist.end();
 138         for (; it != end; ++it) {
 139                 it.setInset(it.getInset()->clone(*current_view->buffer(),
 140                                                  same_ids));
 141                 // tell the new inset who is the boss now
 142                 it.getInset()->parOwner(this);
 143         }
 144 }
 145
 146
 147 // the destructor removes the new paragraph from the list
 148 Paragraph::~Paragraph()
 149 {
 150 #ifndef NO_NEXT
 151         if (previous_)
 152                 previous_->next_ = next_;
 153         if (next_)
 154                 next_->previous_ = previous_;
 155 #endif
 156
 157         // ale970302
 158         delete bibkey;
 159
 160         delete pimpl_;
 161         //
 162         //lyxerr << "Paragraph::paragraph_id = "
 163         //       << Paragraph::paragraph_id << endl;
 164 }
 165
 166
 167 void Paragraph::write(Buffer const * buf, ostream & os,
 168                           BufferParams const & bparams,
 169                           depth_type & dth) const
 170 {
 171         // The beginning or end of a deeper (i.e. nested) area?
 172         if (dth != params().depth()) {
 173                 if (params().depth() > dth) {
 174                         while (params().depth() > dth) {
 175                                 os << "\n\\begin_deeper ";
 176                                 ++dth;
 177                         }
 178                 } else {
 179                         while (params().depth() < dth) {
 180                                 os << "\n\\end_deeper ";
 181                                 --dth;
 182                         }
 183                 }
 184         }
 185
 186         // First write the layout
 187         os << "\n\\layout " << layout()->name() << "\n";
 188
 189         // Maybe some vertical spaces.
 190         if (params().spaceTop().kind() != VSpace::NONE)
 191                 os << "\\added_space_top "
 192                    << params().spaceTop().asLyXCommand() << " ";
 193         if (params().spaceBottom().kind() != VSpace::NONE)
 194                 os << "\\added_space_bottom "
 195                    << params().spaceBottom().asLyXCommand() << " ";
 196
 197         // Maybe the paragraph has special spacing
 198         params().spacing().writeFile(os, true);
 199
 200         // The labelwidth string used in lists.
 201         if (!params().labelWidthString().empty())
 202                 os << "\\labelwidthstring "
 203                    << params().labelWidthString() << '\n';
 204
 205         // Lines above or below?
 206         if (params().lineTop())
 207                 os << "\\line_top ";
 208         if (params().lineBottom())
 209                 os << "\\line_bottom ";
 210
 211         // Pagebreaks above or below?
 212         if (params().pagebreakTop())
 213                 os << "\\pagebreak_top ";
 214         if (params().pagebreakBottom())
 215                 os << "\\pagebreak_bottom ";
 216
 217         // Start of appendix?
 218         if (params().startOfAppendix())
 219                 os << "\\start_of_appendix ";
 220
 221         // Noindent?
 222         if (params().noindent())
 223                 os << "\\noindent ";
 224
 225         // Do we have a manual left indent?
 226         if (!params().leftIndent().zero())
 227                 os << "\\leftindent " << params().leftIndent().asString() << " ";
 228
 229         // Alignment?
 230         if (params().align() != LYX_ALIGN_LAYOUT) {
 231                 int h = 0;
 232                 switch (params().align()) {
 233                 case LYX_ALIGN_LEFT: h = 1; break;
 234                 case LYX_ALIGN_RIGHT: h = 2; break;
 235                 case LYX_ALIGN_CENTER: h = 3; break;
 236                 default: h = 0; break;
 237                 }
 238                 os << "\\align " << string_align[h] << " ";
 239         }
 240
 241         // bibitem  ale970302
 242         if (bibkey)
 243                 bibkey->write(buf, os);
 244
 245         LyXFont font1(LyXFont::ALL_INHERIT, bparams.language);
 246
 247         int column = 0;
 248         for (pos_type i = 0; i < size(); ++i) {
 249                 if (!i) {
 250                         os << "\n";
 251                         column = 0;
 252                 }
 253
 254                 // Write font changes
 255                 LyXFont font2 = getFontSettings(bparams, i);
 256                 if (font2 != font1) {
 257                         font2.lyxWriteChanges(font1, os);
 258                         column = 0;
 259                         font1 = font2;
 260                 }
 261
 262                 value_type const c = getChar(i);
 263                 switch (c) {
 264                 case META_INSET:
 265                 {
 266                         Inset const * inset = getInset(i);
 267                         if (inset)
 268                                 if (inset->directWrite()) {
 269                                         // international char, let it write
 270                                         // code directly so it's shorter in
 271                                         // the file
 272                                         inset->write(buf, os);
 273                                 } else {
 274                                         os << "\n\\begin_inset ";
 275                                         inset->write(buf, os);
 276                                         os << "\n\\end_inset \n\n";
 277                                         column = 0;
 278                                 }
 279                 }
 280                 break;
 281                 case META_NEWLINE:
 282                         os << "\n\\newline \n";
 283                         column = 0;
 284                         break;
 285                 case META_HFILL:
 286                         os << "\n\\hfill \n";
 287                         column = 0;
 288                         break;
 289                 case '\\':
 290                         os << "\n\\backslash \n";
 291                         column = 0;
 292                         break;
 293                 case '.':
 294                         if (i + 1 < size() && getChar(i + 1) == ' ') {
 295                                 os << ".\n";
 296                                 column = 0;
 297                         } else
 298                                 os << ".";
 299                         break;
 300                 default:
 301                         if ((column > 70 && c == ' ')
 302                             || column > 79) {
 303                                 os << "\n";
 304                                 column = 0;
 305                         }
 306                         // this check is to amend a bug. LyX sometimes
 307                         // inserts '\0' this could cause problems.
 308                         if (c != '\0')
 309                                 os << c;
 310                         else
 311                                 lyxerr << "ERROR (Paragraph::writeFile):"
 312                                         " NULL char in structure." << endl;
 313                         ++column;
 314                         break;
 315                 }
 316         }
 317 }
 318
 319
 320 void Paragraph::validate(LaTeXFeatures & features) const
 321 {
 322         pimpl_->validate(features, *layout());
 323 }
 324
 325
 326 // First few functions needed for cut and paste and paragraph breaking.
 327 void Paragraph::copyIntoMinibuffer(Buffer const & buffer, pos_type pos) const
 328 {
 329         BufferParams bparams = buffer.params;
 330
 331         minibuffer_char = getChar(pos);
 332         minibuffer_font = getFontSettings(bparams, pos);
 333         minibuffer_inset = 0;
 334         if (minibuffer_char == Paragraph::META_INSET) {
 335                 if (getInset(pos)) {
 336                         minibuffer_inset = getInset(pos)->clone(buffer);
 337                 } else {
 338                         minibuffer_inset = 0;
 339                         minibuffer_char = ' ';
 340                         // This reflects what GetInset() does (ARRae)
 341                 }
 342         }
 343 }
 344
 345
 346 void Paragraph::cutIntoMinibuffer(BufferParams const & bparams, pos_type pos)
 347 {
 348         minibuffer_char = getChar(pos);
 349         minibuffer_font = getFontSettings(bparams, pos);
 350         minibuffer_inset = 0;
 351         if (minibuffer_char == Paragraph::META_INSET) {
 352                 if (getInset(pos)) {
 353                         // the inset is not in a paragraph anymore
 354                         minibuffer_inset = insetlist.release(pos);
 355                         minibuffer_inset->parOwner(0);
 356                 } else {
 357                         minibuffer_inset = 0;
 358                         minibuffer_char = ' ';
 359                         // This reflects what GetInset() does (ARRae)
 360                 }
 361
 362         }
 363
 364         // Erase(pos); now the caller is responsible for that.
 365 }
 366
 367
 368 bool Paragraph::insertFromMinibuffer(pos_type pos)
 369 {
 370         if (minibuffer_char == Paragraph::META_INSET) {
 371                 if (!insetAllowed(minibuffer_inset->lyxCode())) {
 372                         return false;
 373                 }
 374                 insertInset(pos, minibuffer_inset, minibuffer_font);
 375         } else {
 376                 LyXFont f = minibuffer_font;
 377                 if (!checkInsertChar(f)) {
 378                         return false;
 379                 }
 380                 insertChar(pos, minibuffer_char, f);
 381         }
 382         return true;
 383 }
 384
 385 // end of minibuffer
 386
 387
 388 void Paragraph::erase(pos_type pos)
 389 {
 390         pimpl_->erase(pos);
 391 }
 392
 393
 394 bool Paragraph::checkInsertChar(LyXFont & font)
 395 {
 396         if (pimpl_->inset_owner)
 397                 return pimpl_->inset_owner->checkInsertChar(font);
 398         return true;
 399 }
 400
 401
 402 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c)
 403 {
 404         LyXFont const f(LyXFont::ALL_INHERIT);
 405         insertChar(pos, c, f);
 406 }
 407
 408
 409 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 410                            LyXFont const & font)
 411 {
 412         pimpl_->insertChar(pos, c, font);
 413 }
 414
 415
 416 void Paragraph::insertInset(pos_type pos, Inset * inset)
 417 {
 418         LyXFont const f(LyXFont::ALL_INHERIT);
 419         insertInset(pos, inset, f);
 420 }
 421
 422
 423 void Paragraph::insertInset(pos_type pos, Inset * inset, LyXFont const & font)
 424 {
 425         pimpl_->insertInset(pos, inset, font);
 426 }
 427
 428
 429 bool Paragraph::insetAllowed(Inset::Code code)
 430 {
 431         //lyxerr << "Paragraph::InsertInsetAllowed" << endl;
 432
 433         if (pimpl_->inset_owner)
 434                 return pimpl_->inset_owner->insetAllowed(code);
 435         return true;
 436 }
 437
 438
 439 Inset * Paragraph::getInset(pos_type pos)
 440 {
 441         lyx::Assert(pos < size());
 442
 443         return insetlist.get(pos);
 444 }
 445
 446
 447 Inset const * Paragraph::getInset(pos_type pos) const
 448 {
 449         lyx::Assert(pos < size());
 450
 451         return insetlist.get(pos);
 452 }
 453
 454
 455 // Gets uninstantiated font setting at position.
 456 LyXFont const Paragraph::getFontSettings(BufferParams const & bparams,
 457                                          pos_type pos) const
 458 {
 459         lyx::Assert(pos <= size());
 460
 461         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 462         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 463         for (; cit != end; ++cit) {
 464                 if (cit->pos() >= pos)
 465                         break;
 466         }
 467
 468         LyXFont retfont;
 469         if (cit != end) {
 470                 retfont = cit->font();
 471         } else if (pos == size() && !empty()) {
 472                 retfont = getFontSettings(bparams, pos - 1);
 473         } else
 474                 retfont = LyXFont(LyXFont::ALL_INHERIT, getParLanguage(bparams));
 475
 476         return retfont;
 477 }
 478
 479
 480 // Gets uninstantiated font setting at position 0
 481 LyXFont const Paragraph::getFirstFontSettings() const
 482 {
 483         if (!empty() && !pimpl_->fontlist.empty())
 484                 return pimpl_->fontlist[0].font();
 485
 486         return LyXFont(LyXFont::ALL_INHERIT);
 487 }
 488
 489
 490 // Gets the fully instantiated font at a given position in a paragraph
 491 // This is basically the same function as LyXText::GetFont() in text2.C.
 492 // The difference is that this one is used for generating the LaTeX file,
 493 // and thus cosmetic "improvements" are disallowed: This has to deliver
 494 // the true picture of the buffer. (Asger)
 495 // If position is -1, we get the layout font of the paragraph.
 496 // If position is -2, we get the font of the manual label of the paragraph.
 497 LyXFont const Paragraph::getFont(BufferParams const & bparams,
 498                                  pos_type pos) const
 499 {
 500         lyx::Assert(pos >= 0);
 501
 502         LyXLayout_ptr const & lout = layout();
 503
 504         pos_type main_body = 0;
 505         if (lout->labeltype == LABEL_MANUAL)
 506                 main_body = beginningOfMainBody();
 507
 508         LyXFont layoutfont;
 509         if (pos < main_body)
 510                 layoutfont = lout->labelfont;
 511         else
 512                 layoutfont = lout->font;
 513
 514         LyXFont tmpfont = getFontSettings(bparams, pos);
 515         tmpfont.realize(layoutfont);
 516
 517         return pimpl_->realizeFont(tmpfont, bparams);
 518 }
 519
 520
 521 LyXFont const Paragraph::getLabelFont(BufferParams const & bparams) const
 522 {
 523         LyXLayout_ptr const & lout = layout();
 524
 525         LyXFont tmpfont = lout->labelfont;
 526         tmpfont.setLanguage(getParLanguage(bparams));
 527
 528         return pimpl_->realizeFont(tmpfont, bparams);
 529 }
 530
 531
 532 LyXFont const Paragraph::getLayoutFont(BufferParams const & bparams) const
 533 {
 534         LyXLayout_ptr const & lout = layout();
 535
 536         LyXFont tmpfont = lout->font;
 537         tmpfont.setLanguage(getParLanguage(bparams));
 538
 539         return pimpl_->realizeFont(tmpfont, bparams);
 540 }
 541
 542
 543 /// Returns the height of the highest font in range
 544 LyXFont::FONT_SIZE
 545 Paragraph::highestFontInRange(pos_type startpos, pos_type endpos,
 546                               LyXFont::FONT_SIZE const def_size) const
 547 {
 548         if (pimpl_->fontlist.empty())
 549                 return def_size;
 550
 551         Pimpl::FontList::const_iterator end_it = pimpl_->fontlist.begin();
 552         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 553         for (; end_it != end; ++end_it) {
 554                 if (end_it->pos() >= endpos)
 555                         break;
 556         }
 557
 558         if (end_it != end)
 559                 ++end_it;
 560
 561         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 562         for (; cit != end; ++cit) {
 563                 if (cit->pos() >= startpos)
 564                         break;
 565         }
 566
 567         LyXFont::FONT_SIZE maxsize = LyXFont::SIZE_TINY;
 568         for (; cit != end_it; ++cit) {
 569                 LyXFont::FONT_SIZE size = cit->font().size();
 570                 if (size == LyXFont::INHERIT_SIZE)
 571                         size = def_size;
 572                 if (size > maxsize && size <= LyXFont::SIZE_HUGER)
 573                         maxsize = size;
 574         }
 575         return maxsize;
 576 }
 577
 578
 579 Paragraph::value_type
 580 Paragraph::getUChar(BufferParams const & bparams, pos_type pos) const
 581 {
 582         value_type c = getChar(pos);
 583         if (!lyxrc.rtl_support)
 584                 return c;
 585
 586         value_type uc = c;
 587         switch (c) {
 588         case '(':
 589                 uc = ')';
 590                 break;
 591         case ')':
 592                 uc = '(';
 593                 break;
 594         case '[':
 595                 uc = ']';
 596                 break;
 597         case ']':
 598                 uc = '[';
 599                 break;
 600         case '{':
 601                 uc = '}';
 602                 break;
 603         case '}':
 604                 uc = '{';
 605                 break;
 606         case '<':
 607                 uc = '>';
 608                 break;
 609         case '>':
 610                 uc = '<';
 611                 break;
 612         }
 613         if (uc != c && getFontSettings(bparams, pos).isRightToLeft())
 614                 return uc;
 615         else
 616                 return c;
 617 }
 618
 619
 620 void Paragraph::setFont(pos_type pos, LyXFont const & font)
 621 {
 622         lyx::Assert(pos <= size());
 623
 624         // First, reduce font against layout/label font
 625         // Update: The SetCharFont() routine in text2.C already
 626         // reduces font, so we don't need to do that here. (Asger)
 627         // No need to simplify this because it will disappear
 628         // in a new kernel. (Asger)
 629         // Next search font table
 630
 631         Pimpl::FontList::iterator beg = pimpl_->fontlist.begin();
 632         Pimpl::FontList::iterator it = beg;
 633         Pimpl::FontList::iterator endit = pimpl_->fontlist.end();
 634         for (; it != endit; ++it) {
 635                 if (it->pos() >= pos)
 636                         break;
 637         }
 638         unsigned int i = std::distance(beg, it);
 639         bool notfound = (it == endit);
 640
 641         if (!notfound && pimpl_->fontlist[i].font() == font)
 642                 return;
 643
 644         bool begin = pos == 0 || notfound ||
 645                 (i > 0 && pimpl_->fontlist[i - 1].pos() == pos - 1);
 646         // Is position pos is a beginning of a font block?
 647         bool end = !notfound && pimpl_->fontlist[i].pos() == pos;
 648         // Is position pos is the end of a font block?
 649         if (begin && end) { // A single char block
 650                 if (i + 1 < pimpl_->fontlist.size() &&
 651                     pimpl_->fontlist[i + 1].font() == font) {
 652                         // Merge the singleton block with the next block
 653                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 654                         if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 655                                 pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i - 1);
 656                 } else if (i > 0 && pimpl_->fontlist[i - 1].font() == font) {
 657                         // Merge the singleton block with the previous block
 658                         pimpl_->fontlist[i - 1].pos(pos);
 659                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 660                 } else
 661                         pimpl_->fontlist[i].font(font);
 662         } else if (begin) {
 663                 if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 664                         pimpl_->fontlist[i - 1].pos(pos);
 665                 else
 666                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 667                                         Pimpl::FontTable(pos, font));
 668         } else if (end) {
 669                 pimpl_->fontlist[i].pos(pos - 1);
 670                 if (!(i + 1 < pimpl_->fontlist.size() &&
 671                       pimpl_->fontlist[i + 1].font() == font))
 672                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 673                                         Pimpl::FontTable(pos, font));
 674         } else { // The general case. The block is splitted into 3 blocks
 675                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 676                                 Pimpl::FontTable(pos - 1, pimpl_->fontlist[i].font()));
 677                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 678                                 Pimpl::FontTable(pos, font));
 679         }
 680 }
 681
 682
 683 #ifndef NO_NEXT
 684 void Paragraph::next(Paragraph * p)
 685 {
 686         next_ = p;
 687 }
 688
 689
 690 // This function is able to hide closed footnotes.
 691 Paragraph * Paragraph::next()
 692 {
 693         return next_;
 694 }
 695
 696
 697 Paragraph const * Paragraph::next() const
 698 {
 699         return next_;
 700 }
 701
 702
 703 void Paragraph::previous(Paragraph * p)
 704 {
 705         previous_ = p;
 706 }
 707
 708
 709 // This function is able to hide closed footnotes.
 710 Paragraph * Paragraph::previous()
 711 {
 712         return previous_;
 713 }
 714
 715
 716 // This function is able to hide closed footnotes.
 717 Paragraph const * Paragraph::previous() const
 718 {
 719         return previous_;
 720 }
 721 #endif
 722
 723
 724 void Paragraph::makeSameLayout(Paragraph const * par)
 725 {
 726         layout(par->layout());
 727         // move to pimpl?
 728         params() = par->params();
 729 }
 730
 731
 732 int Paragraph::stripLeadingSpaces()
 733 {
 734         if (layout()->free_spacing ||
 735             isFreeSpacing()) {
 736                 return 0;
 737         }
 738
 739         int i = 0;
 740         while (!empty() && (isNewline(0) || isLineSeparator(0))) {
 741                 erase(0);
 742                 ++i;
 743         }
 744
 745         return i;
 746 }
 747
 748
 749 bool Paragraph::hasSameLayout(Paragraph const * par) const
 750 {
 751         return
 752                 par->layout() == layout() &&
 753                 params().sameLayout(par->params());
 754 }
 755
 756
 757 int Paragraph::getEndLabel() const
 758 {
 759         Paragraph const * par = this;
 760         depth_type par_depth = getDepth();
 761         while (par) {
 762                 LyXLayout_ptr const & layout = par->layout();
 763                 int const endlabeltype = layout->endlabeltype;
 764
 765                 if (endlabeltype != END_LABEL_NO_LABEL) {
 766                         if (!next_)
 767                                 return endlabeltype;
 768
 769                         depth_type const next_depth = next_->getDepth();
 770                         if (par_depth > next_depth ||
 771                             (par_depth == next_depth
 772                              && layout != next_->layout()))
 773                                 return endlabeltype;
 774                         break;
 775                 }
 776                 if (par_depth == 0)
 777                         break;
 778                 par = par->outerHook();
 779                 if (par)
 780                         par_depth = par->getDepth();
 781         }
 782         return END_LABEL_NO_LABEL;
 783 }
 784
 785
 786 Paragraph::depth_type Paragraph::getDepth() const
 787 {
 788         return params().depth();
 789 }
 790
 791
 792 Paragraph::depth_type Paragraph::getMaxDepthAfter() const
 793 {
 794         bool const isenv = layout()->isEnvironment();
 795
 796         if (isenv)
 797                 return params().depth() + 1;
 798         else
 799                 return params().depth();
 800
 801 }
 802
 803 char Paragraph::getAlign() const
 804 {
 805         return params().align();
 806 }
 807
 808
 809 string const & Paragraph::getLabelstring() const
 810 {
 811         return params().labelString();
 812 }
 813
 814
 815 // the next two functions are for the manual labels
 816 string const Paragraph::getLabelWidthString() const
 817 {
 818         if (!params().labelWidthString().empty())
 819                 return params().labelWidthString();
 820         else
 821                 return _("Senseless with this layout!");
 822 }
 823
 824
 825 void Paragraph::setLabelWidthString(string const & s)
 826 {
 827         params().labelWidthString(s);
 828 }
 829
 830
 831 void Paragraph::applyLayout(LyXLayout_ptr const & new_layout)
 832 {
 833         layout(new_layout);
 834         params().labelWidthString(string());
 835         params().align(LYX_ALIGN_LAYOUT);
 836         params().spaceTop(VSpace(VSpace::NONE));
 837         params().spaceBottom(VSpace(VSpace::NONE));
 838         params().spacing(Spacing(Spacing::Default));
 839 }
 840
 841
 842 // if the layout of a paragraph contains a manual label, the beginning of the
 843 // main body is the beginning of the second word. This is what the par-
 844 // function returns. If the layout does not contain a label, the main
 845 // body always starts with position 0. This differentiation is necessary,
 846 // because there cannot be a newline or a blank <= the beginning of the
 847 // main body in TeX.
 848
 849 int Paragraph::beginningOfMainBody() const
 850 {
 851         // Unroll the first two cycles of the loop
 852         // and remember the previous character to
 853         // remove unnecessary GetChar() calls
 854         pos_type i = 0;
 855         if (i < size() && getChar(i) != Paragraph::META_NEWLINE) {
 856                 ++i;
 857                 char previous_char = 0;
 858                 char temp = 0;
 859                 if (i < size()
 860                     && (previous_char = getChar(i)) != Paragraph::META_NEWLINE) {
 861                         // Yes, this  ^ is supposed to be "= " not "=="
 862                         ++i;
 863                         while (i < size()
 864                                && previous_char != ' '
 865                                && (temp = getChar(i)) != Paragraph::META_NEWLINE) {
 866                                 ++i;
 867                                 previous_char = temp;
 868                         }
 869                 }
 870         }
 871
 872         return i;
 873 }
 874
 875
 876 Paragraph * Paragraph::depthHook(depth_type depth)
 877 {
 878         Paragraph * newpar = this;
 879
 880         do {
 881                 newpar = newpar->previous();
 882         } while (newpar && newpar->getDepth() > depth);
 883
 884         if (!newpar) {
 885                 if (previous() || getDepth())
 886                         lyxerr << "ERROR (Paragraph::DepthHook): "
 887                                 "no hook." << endl;
 888                 newpar = this;
 889         }
 890
 891         return newpar;
 892 }
 893
 894
 895 Paragraph const * Paragraph::depthHook(depth_type depth) const
 896 {
 897         Paragraph const * newpar = this;
 898
 899         do {
 900                 newpar = newpar->previous();
 901         } while (newpar && newpar->getDepth() > depth);
 902
 903         if (!newpar) {
 904                 if (previous() || getDepth())
 905                         lyxerr << "ERROR (Paragraph::DepthHook): "
 906                                 "no hook." << endl;
 907                 newpar = this;
 908         }
 909
 910         return newpar;
 911 }
 912
 913
 914 Paragraph * Paragraph::outerHook()
 915 {
 916         if (!getDepth())
 917                 return 0;
 918         return depthHook(depth_type(getDepth() - 1));
 919 }
 920
 921
 922 Paragraph const * Paragraph::outerHook() const
 923 {
 924         if (!getDepth())
 925                 return 0;
 926         return depthHook(depth_type(getDepth() - 1));
 927 }
 928
 929
 930 // returns -1 if inset not found
 931 int Paragraph::getPositionOfInset(Inset const * inset) const
 932 {
 933         // Find the entry.
 934         InsetList::iterator it = insetlist.begin();
 935         InsetList::iterator end = insetlist.end();
 936         for (; it != end; ++it) {
 937                 if (it.getInset() == inset) {
 938                         return it.getPos();
 939                 }
 940         }
 941         if (inset == bibkey)
 942                 return 0;
 943
 944         return -1;
 945 }
 946
 947 namespace {
 948
 949 InsetOptArg * optArgInset(Paragraph const & par)
 950 {
 951         // Find the entry.
 952         InsetList::iterator it = par.insetlist.begin();
 953         InsetList::iterator end = par.insetlist.end();
 954         for (; it != end; ++it) {
 955                 Inset * ins = it.getInset();
 956                 if (ins->lyxCode() == Inset::OPTARG_CODE) {
 957                         return static_cast<InsetOptArg *>(ins);
 958                 }
 959         }
 960         return 0;
 961 }
 962
 963 } // end namespace
 964
 965 Paragraph * Paragraph::TeXOnePar(Buffer const * buf,
 966                                  BufferParams const & bparams,
 967                                  ostream & os, TexRow & texrow,
 968                                  bool moving_arg)
 969 {
 970         lyxerr[Debug::LATEX] << "TeXOnePar...     " << this << endl;
 971         Inset const * in = inInset();
 972         bool further_blank_line = false;
 973         LyXLayout_ptr style;
 974
 975         // well we have to check if we are in an inset with unlimited
 976         // lenght (all in one row) if that is true then we don't allow
 977         // any special options in the paragraph and also we don't allow
 978         // any environment other then "Standard" to be valid!
 979         if ((in == 0) || !in->forceDefaultParagraphs(in)) {
 980                 style = layout();
 981
 982                 if (params().startOfAppendix()) {
 983                         os << "\\appendix\n";
 984                         texrow.newline();
 985                 }
 986
 987                 if (!params().spacing().isDefault()
 988                         && (!previous() || !previous()->hasSameLayout(this))) {
 989                         os << params().spacing().writeEnvirBegin() << "\n";
 990                         texrow.newline();
 991                 }
 992
 993                 if (style->isCommand()) {
 994                         os << '\n';
 995                         texrow.newline();
 996                 }
 997
 998                 if (params().pagebreakTop()) {
 999                         os << "\\newpage";
1000                         further_blank_line = true;
1001                 }
1002                 if (params().spaceTop().kind() != VSpace::NONE) {
1003                         os << params().spaceTop().asLatexCommand(bparams);
1004                         further_blank_line = true;
1005                 }
1006
1007                 if (params().lineTop()) {
1008                         os << "\\lyxline{\\" << getFont(bparams, 0).latexSize() << '}'
1009                            << "\\vspace{-1\\parskip}";
1010                         further_blank_line = true;
1011                 }
1012
1013                 if (further_blank_line) {
1014                         os << '\n';
1015                         texrow.newline();
1016                 }
1017         } else {
1018                 style = bparams.getLyXTextClass().defaultLayout();
1019         }
1020
1021         Language const * language = getParLanguage(bparams);
1022         Language const * doc_language = bparams.language;
1023         Language const * previous_language = previous()
1024                 ? previous()->getParLanguage(bparams) : doc_language;
1025
1026         if (language->babel() != previous_language->babel()
1027             // check if we already put language command in TeXEnvironment()
1028             && !(style->isEnvironment()
1029                  && (!previous() || previous()->layout() != layout() ||
1030                          previous()->params().depth() != params().depth())))
1031         {
1032                 if (!lyxrc.language_command_end.empty() &&
1033                     previous_language->babel() != doc_language->babel())
1034                 {
1035                         os << subst(lyxrc.language_command_end, "$$lang",
1036                                     previous_language->babel())
1037                            << endl;
1038                         texrow.newline();
1039                 }
1040
1041                 if (lyxrc.language_command_end.empty() ||
1042                     language->babel() != doc_language->babel())
1043                 {
1044                         os << subst(lyxrc.language_command_begin, "$$lang",
1045                                     language->babel())
1046                            << endl;
1047                         texrow.newline();
1048                 }
1049         }
1050
1051         if (bparams.inputenc == "auto" &&
1052             language->encoding() != previous_language->encoding()) {
1053                 os << "\\inputencoding{"
1054                    << language->encoding()->LatexName()
1055                    << "}" << endl;
1056                 texrow.newline();
1057         }
1058
1059         switch (style->latextype) {
1060         case LATEX_COMMAND:
1061                 os << '\\'
1062                    << style->latexname();
1063
1064                 // Separate handling of optional argument inset.
1065                 if (style->optionalargs == 1) {
1066                         InsetOptArg * it = optArgInset(*this);
1067                         if (it != 0)
1068                                 it->latexOptional(buf, os, false, false);
1069                 }
1070                 else
1071                         os << style->latexparam();
1072                 break;
1073         case LATEX_ITEM_ENVIRONMENT:
1074                 if (bibkey) {
1075                         bibkey->latex(buf, os, false, false);
1076                 } else
1077                         os << "\\item ";
1078                 break;
1079         case LATEX_LIST_ENVIRONMENT:
1080                 os << "\\item ";
1081                 break;
1082         default:
1083                 break;
1084         }
1085
1086         bool need_par = simpleTeXOnePar(buf, bparams, os, texrow, moving_arg);
1087
1088         // Make sure that \\par is done with the font of the last
1089         // character if this has another size as the default.
1090         // This is necessary because LaTeX (and LyX on the screen)
1091         // calculates the space between the baselines according
1092         // to this font. (Matthias)
1093         //
1094         // Is this really needed ? (Dekel)
1095         // We do not need to use to change the font for the last paragraph
1096         // or for a command.
1097         LyXFont const font =
1098                 (empty()
1099                  ? getLayoutFont(bparams) : getFont(bparams, size() - 1));
1100
1101         bool is_command = style->isCommand();
1102
1103         if (style->resfont.size() != font.size() && next_ && !is_command) {
1104                 if (!need_par)
1105                         os << "{";
1106                 os << "\\" << font.latexSize() << " \\par}";
1107         } else if (need_par) {
1108                 os << "\\par}";
1109         } else if (is_command)
1110                 os << "}";
1111
1112         switch (style->latextype) {
1113         case LATEX_ITEM_ENVIRONMENT:
1114         case LATEX_LIST_ENVIRONMENT:
1115                 if (next_ && (params().depth() < next_->params().depth())) {
1116                         os << '\n';
1117                         texrow.newline();
1118                 }
1119                 break;
1120         case LATEX_ENVIRONMENT:
1121                 // if its the last paragraph of the current environment
1122                 // skip it otherwise fall through
1123                 if (next_
1124                     && (next_->layout() != layout()
1125                         || next_->params().depth() != params().depth()))
1126                         break;
1127                 // fall through possible
1128         default:
1129                 // we don't need it for the last paragraph!!!
1130                 if (next_) {
1131                         os << '\n';
1132                         texrow.newline();
1133                 }
1134         }
1135
1136         if ((in == 0) || !in->forceDefaultParagraphs(in)) {
1137                 further_blank_line = false;
1138                 if (params().lineBottom()) {
1139                         os << "\\lyxline{\\" << font.latexSize() << '}';
1140                         further_blank_line = true;
1141                 }
1142
1143                 if (params().spaceBottom().kind() != VSpace::NONE) {
1144                         os << params().spaceBottom().asLatexCommand(bparams);
1145                         further_blank_line = true;
1146                 }
1147
1148                 if (params().pagebreakBottom()) {
1149                         os << "\\newpage";
1150                         further_blank_line = true;
1151                 }
1152
1153                 if (further_blank_line) {
1154                         os << '\n';
1155                         texrow.newline();
1156                 }
1157
1158                 if (!params().spacing().isDefault()
1159                         && (!next_ || !next_->hasSameLayout(this))) {
1160                         os << params().spacing().writeEnvirEnd() << "\n";
1161                         texrow.newline();
1162                 }
1163         }
1164
1165         // we don't need it for the last paragraph!!!
1166         if (next_) {
1167                 os << '\n';
1168                 texrow.newline();
1169         } else {
1170                 // Since \selectlanguage write the language to the aux file,
1171                 // we need to reset the language at the end of footnote or
1172                 // float.
1173
1174                 if (language->babel() != doc_language->babel()) {
1175                         if (lyxrc.language_command_end.empty())
1176                                 os << subst(lyxrc.language_command_begin,
1177                                             "$$lang",
1178                                             doc_language->babel())
1179                                    << endl;
1180                         else
1181                                 os << subst(lyxrc.language_command_end,
1182                                             "$$lang",
1183                                             language->babel())
1184                                    << endl;
1185                         texrow.newline();
1186                 }
1187         }
1188
1189         lyxerr[Debug::LATEX] << "TeXOnePar...done " << next_ << endl;
1190         return next_;
1191 }
1192
1193
1194 // This could go to ParagraphParameters if we want to
1195 int Paragraph::startTeXParParams(BufferParams const & bparams,
1196                                  ostream & os, bool moving_arg) const
1197 {
1198         int column = 0;
1199
1200         if (params().noindent()) {
1201                 os << "\\noindent ";
1202                 column += 10;
1203         }
1204
1205         switch (params().align()) {
1206         case LYX_ALIGN_NONE:
1207         case LYX_ALIGN_BLOCK:
1208         case LYX_ALIGN_LAYOUT:
1209         case LYX_ALIGN_SPECIAL:
1210                 break;
1211         case LYX_ALIGN_LEFT:
1212         case LYX_ALIGN_RIGHT:
1213         case LYX_ALIGN_CENTER:
1214                 if (moving_arg) {
1215                         os << "\\protect";
1216                         column = 8;
1217                 }
1218                 break;
1219         }
1220
1221         switch (params().align()) {
1222         case LYX_ALIGN_NONE:
1223         case LYX_ALIGN_BLOCK:
1224         case LYX_ALIGN_LAYOUT:
1225         case LYX_ALIGN_SPECIAL:
1226                 break;
1227         case LYX_ALIGN_LEFT:
1228                 if (getParLanguage(bparams)->babel() != "hebrew") {
1229                         os << "\\begin{flushleft}";
1230                         column += 17;
1231                 } else {
1232                         os << "\\begin{flushright}";
1233                         column += 18;
1234                 }
1235                 break;
1236         case LYX_ALIGN_RIGHT:
1237                 if (getParLanguage(bparams)->babel() != "hebrew") {
1238                         os << "\\begin{flushright}";
1239                         column += 18;
1240                 } else {
1241                         os << "\\begin{flushleft}";
1242                         column += 17;
1243                 }
1244                 break;
1245         case LYX_ALIGN_CENTER:
1246                 os << "\\begin{center}";
1247                 column += 14;
1248                 break;
1249         }
1250
1251         return column;
1252 }
1253
1254
1255 // This could go to ParagraphParameters if we want to
1256 int Paragraph::endTeXParParams(BufferParams const & bparams,
1257                                ostream & os, bool moving_arg) const
1258 {
1259         int column = 0;
1260
1261         switch (params().align()) {
1262         case LYX_ALIGN_NONE:
1263         case LYX_ALIGN_BLOCK:
1264         case LYX_ALIGN_LAYOUT:
1265         case LYX_ALIGN_SPECIAL:
1266                 break;
1267         case LYX_ALIGN_LEFT:
1268         case LYX_ALIGN_RIGHT:
1269         case LYX_ALIGN_CENTER:
1270                 if (moving_arg) {
1271                         os << "\\protect";
1272                         column = 8;
1273                 }
1274                 break;
1275         }
1276
1277         switch (params().align()) {
1278         case LYX_ALIGN_NONE:
1279         case LYX_ALIGN_BLOCK:
1280         case LYX_ALIGN_LAYOUT:
1281         case LYX_ALIGN_SPECIAL:
1282                 break;
1283         case LYX_ALIGN_LEFT:
1284                 if (getParLanguage(bparams)->babel() != "hebrew") {
1285                         os << "\\end{flushleft}";
1286                         column = 15;
1287                 } else {
1288                         os << "\\end{flushright}";
1289                         column = 16;
1290                 }
1291                 break;
1292         case LYX_ALIGN_RIGHT:
1293                 if (getParLanguage(bparams)->babel() != "hebrew") {
1294                         os << "\\end{flushright}";
1295                         column+= 16;
1296                 } else {
1297                         os << "\\end{flushleft}";
1298                         column = 15;
1299                 }
1300                 break;
1301         case LYX_ALIGN_CENTER:
1302                 os << "\\end{center}";
1303                 column = 12;
1304                 break;
1305         }
1306         return column;
1307 }
1308
1309
1310 // This one spits out the text of the paragraph
1311 bool Paragraph::simpleTeXOnePar(Buffer const * buf,
1312                                 BufferParams const & bparams,
1313                                 ostream & os, TexRow & texrow,
1314                                 bool moving_arg)
1315 {
1316         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...     " << this << endl;
1317
1318         bool return_value = false;
1319
1320         LyXLayout_ptr style;
1321
1322         // well we have to check if we are in an inset with unlimited
1323         // lenght (all in one row) if that is true then we don't allow
1324         // any special options in the paragraph and also we don't allow
1325         // any environment other then "Standard" to be valid!
1326         bool asdefault =
1327                 (inInset() && inInset()->forceDefaultParagraphs(inInset()));
1328
1329         if (asdefault) {
1330                 style = bparams.getLyXTextClass().defaultLayout();
1331         } else {
1332                 style = layout();
1333         }
1334
1335         LyXFont basefont;
1336
1337         // Maybe we have to create a optional argument.
1338         pos_type main_body;
1339         if (style->labeltype != LABEL_MANUAL)
1340                 main_body = 0;
1341         else
1342                 main_body = beginningOfMainBody();
1343
1344         int column = 0;
1345
1346         if (main_body > 0) {
1347                 os << '[';
1348                 ++column;
1349                 basefont = getLabelFont(bparams);
1350         } else {
1351                 basefont = getLayoutFont(bparams);
1352         }
1353
1354         moving_arg |= style->needprotect;
1355
1356         // Which font is currently active?
1357         LyXFont running_font(basefont);
1358         // Do we have an open font change?
1359         bool open_font = false;
1360
1361         texrow.start(this, 0);
1362
1363         // if the paragraph is empty, the loop will not be entered at all
1364         if (empty()) {
1365                 if (style->isCommand()) {
1366                         os << '{';
1367                         ++column;
1368                 }
1369                 if (!asdefault)
1370                         column += startTeXParParams(bparams, os, moving_arg);
1371
1372         }
1373
1374         for (pos_type i = 0; i < size(); ++i) {
1375                 ++column;
1376                 // First char in paragraph or after label?
1377                 if (i == main_body) {
1378                         if (main_body > 0) {
1379                                 if (open_font) {
1380                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
1381                                         open_font = false;
1382                                 }
1383                                 basefont = getLayoutFont(bparams);
1384                                 running_font = basefont;
1385                                 os << ']';
1386                                 ++column;
1387                         }
1388                         if (style->isCommand()) {
1389                                 os << '{';
1390                                 ++column;
1391                         }
1392
1393                         if (!asdefault)
1394                                 column += startTeXParParams(bparams, os,
1395                                                             moving_arg);
1396                 }
1397
1398                 value_type c = getChar(i);
1399
1400                 // Fully instantiated font
1401                 LyXFont font = getFont(bparams, i);
1402
1403                 LyXFont const last_font = running_font;
1404
1405                 // Spaces at end of font change are simulated to be
1406                 // outside font change, i.e. we write "\textXX{text} "
1407                 // rather than "\textXX{text }". (Asger)
1408                 if (open_font && c == ' ' && i <= size() - 2) {
1409                         LyXFont const & next_font = getFont(bparams, i + 1);
1410                         if (next_font != running_font
1411                             && next_font != font) {
1412                                 font = next_font;
1413                         }
1414                 }
1415
1416                 // We end font definition before blanks
1417                 if (open_font &&
1418                     (font != running_font ||
1419                      font.language() != running_font.language()))
1420                 {
1421                         column += running_font.latexWriteEndChanges(os,
1422                                                                     basefont,
1423                                                                     (i == main_body-1) ? basefont : font);
1424                         running_font = basefont;
1425                         open_font = false;
1426                 }
1427
1428                 // Blanks are printed before start of fontswitch
1429                 if (c == ' ') {
1430                         // Do not print the separation of the optional argument
1431                         if (i != main_body - 1) {
1432                                 pimpl_->simpleTeXBlanks(os, texrow, i,
1433                                                        column, font, *style);
1434                         }
1435                 }
1436
1437                 // Do we need to change font?
1438                 if ((font != running_font ||
1439                      font.language() != running_font.language()) &&
1440                         i != main_body - 1)
1441                 {
1442                         column += font.latexWriteStartChanges(os, basefont,
1443                                                               last_font);
1444                         running_font = font;
1445                         open_font = true;
1446                 }
1447
1448                 if (c == Paragraph::META_NEWLINE) {
1449                         // newlines are handled differently here than
1450                         // the default in SimpleTeXSpecialChars().
1451                         if (!style->newline_allowed) {
1452                                 os << '\n';
1453                         } else {
1454                                 if (open_font) {
1455                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
1456                                         open_font = false;
1457                                 }
1458                                 basefont = getLayoutFont(bparams);
1459                                 running_font = basefont;
1460                                 if (font.family() ==
1461                                     LyXFont::TYPEWRITER_FAMILY) {
1462                                         os << "~";
1463                                 }
1464                                 if (moving_arg)
1465                                         os << "\\protect ";
1466
1467                                 os << "\\\\\n";
1468                         }
1469                         texrow.newline();
1470                         texrow.start(this, i + 1);
1471                         column = 0;
1472                 } else {
1473                         pimpl_->simpleTeXSpecialChars(buf, bparams,
1474                                                       os, texrow, moving_arg,
1475                                                       font, running_font,
1476                                                       basefont, open_font,
1477                                                       *style, i, column, c);
1478                 }
1479         }
1480
1481         // If we have an open font definition, we have to close it
1482         if (open_font) {
1483 #ifdef FIXED_LANGUAGE_END_DETECTION
1484                 if (next_) {
1485                         running_font
1486                                 .latexWriteEndChanges(os, basefont,
1487                                                       next_->getFont(bparams,
1488                                                       0));
1489                 } else {
1490                         running_font.latexWriteEndChanges(os, basefont,
1491                                                           basefont);
1492                 }
1493 #else
1494 #ifdef WITH_WARNINGS
1495 //#warning For now we ALWAYS have to close the foreign font settings if they are
1496 //#warning there as we start another \selectlanguage with the next paragraph if
1497 //#warning we are in need of this. This should be fixed sometime (Jug)
1498 #endif
1499                 running_font.latexWriteEndChanges(os, basefont,  basefont);
1500 #endif
1501         }
1502
1503         // Needed if there is an optional argument but no contents.
1504         if (main_body > 0 && main_body == size()) {
1505                 os << "]~";
1506                 return_value = false;
1507         }
1508
1509         if (!asdefault) {
1510                 column += endTeXParParams(bparams, os, moving_arg);
1511         }
1512
1513         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...done " << this << endl;
1514         return return_value;
1515 }
1516
1517
1518 Paragraph * Paragraph::TeXEnvironment(Buffer const * buf,
1519                                             BufferParams const & bparams,
1520                                             ostream & os, TexRow & texrow)
1521 {
1522         lyxerr[Debug::LATEX] << "TeXEnvironment...     " << this << endl;
1523
1524         LyXLayout_ptr const & style = layout();
1525
1526         Language const * language = getParLanguage(bparams);
1527         Language const * doc_language = bparams.language;
1528         Language const * previous_language = previous_
1529                 ? previous_->getParLanguage(bparams) : doc_language;
1530         if (language->babel() != previous_language->babel()) {
1531
1532                 if (!lyxrc.language_command_end.empty() &&
1533                     previous_language->babel() != doc_language->babel()) {
1534                         os << subst(lyxrc.language_command_end, "$$lang",
1535                                     previous_language->babel())
1536                            << endl;
1537                         texrow.newline();
1538                 }
1539
1540                 if (lyxrc.language_command_end.empty() ||
1541                     language->babel() != doc_language->babel()) {
1542                         os << subst(lyxrc.language_command_begin, "$$lang",
1543                                     language->babel())
1544                            << endl;
1545                         texrow.newline();
1546                 }
1547         }
1548
1549         bool leftindent_open = false;
1550         if (!params().leftIndent().zero()) {
1551                 os << "\\begin{LyXParagraphLeftIndent}{" <<
1552                         params().leftIndent().asLatexString() << "}\n";
1553                 texrow.newline();
1554                 leftindent_open = true;
1555         }
1556
1557         if (style->isEnvironment()) {
1558                 if (style->latextype == LATEX_LIST_ENVIRONMENT) {
1559                         os << "\\begin{" << style->latexname() << "}{"
1560                            << params().labelWidthString() << "}\n";
1561                 } else if (style->labeltype == LABEL_BIBLIO) {
1562                         // ale970405
1563                         os << "\\begin{" << style->latexname() << "}{"
1564                            <<  bibitemWidest(buf)
1565                            << "}\n";
1566                 } else if (style->latextype == LATEX_ITEM_ENVIRONMENT) {
1567                         os << "\\begin{" << style->latexname() << '}'
1568                            << style->latexparam() << '\n';
1569                 } else
1570                         os << "\\begin{" << style->latexname() << '}'
1571                            << style->latexparam() << '\n';
1572                 texrow.newline();
1573         }
1574         Paragraph * par = this;
1575         do {
1576                 par = par->TeXOnePar(buf, bparams, os, texrow, false);
1577
1578                 if (par && par->params().depth() > params().depth()) {
1579                             if (par->layout()->isParagraph()) {
1580
1581                             // Thinko!
1582                             // How to handle this? (Lgb)
1583                             //&& !suffixIs(os, "\n\n")
1584                                     //) {
1585                                 // There should be at least one '\n' already
1586                                 // but we need there to be two for Standard
1587                                 // paragraphs that are depth-increment'ed to be
1588                                 // output correctly.  However, tables can
1589                                 // also be paragraphs so don't adjust them.
1590                                 // ARRae
1591                                 // Thinkee:
1592                                 // Will it ever harm to have one '\n' too
1593                                 // many? i.e. that we sometimes will have
1594                                 // three in a row. (Lgb)
1595                                 os << '\n';
1596                                 texrow.newline();
1597                         }
1598                         par = par->pimpl_->TeXDeeper(buf, bparams, os, texrow);
1599                 }
1600         } while (par
1601                  && par->layout() == layout()
1602                  && par->params().depth() == params().depth()
1603                  && par->params().leftIndent() == params().leftIndent());
1604
1605         if (style->isEnvironment()) {
1606                 os << "\\end{" << style->latexname() << "}\n";
1607                 texrow.newline();
1608         }
1609
1610         if (leftindent_open) {
1611                 os << "\\end{LyXParagraphLeftIndent}\n";
1612                 texrow.newline();
1613         }
1614
1615         lyxerr[Debug::LATEX] << "TeXEnvironment...done " << par << endl;
1616         return par;  // ale970302
1617 }
1618
1619
1620 bool Paragraph::isHfill(pos_type pos) const
1621 {
1622         return IsHfillChar(getChar(pos));
1623 }
1624
1625
1626 bool Paragraph::isInset(pos_type pos) const
1627 {
1628         return IsInsetChar(getChar(pos));
1629 }
1630
1631
1632 bool Paragraph::isNewline(pos_type pos) const
1633 {
1634         return pos >= 0 && IsNewlineChar(getChar(pos));
1635 }
1636
1637
1638 bool Paragraph::isSeparator(pos_type pos) const
1639 {
1640         return IsSeparatorChar(getChar(pos));
1641 }
1642
1643
1644 bool Paragraph::isLineSeparator(pos_type pos) const
1645 {
1646         value_type const c = getChar(pos);
1647         return IsLineSeparatorChar(c)
1648                 || (IsInsetChar(c) && getInset(pos) &&
1649                 getInset(pos)->isLineSeparator());
1650 }
1651
1652
1653 bool Paragraph::isKomma(pos_type pos) const
1654 {
1655         return IsKommaChar(getChar(pos));
1656 }
1657
1658
1659 /// Used by the spellchecker
1660 bool Paragraph::isLetter(pos_type pos) const
1661 {
1662         value_type const c = getChar(pos);
1663         if (IsLetterChar(c))
1664                 return true;
1665         if (isInset(pos))
1666                 return getInset(pos)->isLetter();
1667         // We want to pass the ' and escape chars to ispell
1668         string const extra = lyxrc.isp_esc_chars + '\'';
1669         return contains(extra, c);
1670 }
1671
1672
1673 bool Paragraph::isWord(pos_type pos) const
1674 {
1675         return IsWordChar(getChar(pos)) ;
1676 }
1677
1678
1679 Language const *
1680 Paragraph::getParLanguage(BufferParams const & bparams) const
1681 {
1682         if (!empty()) {
1683                 return getFirstFontSettings().language();
1684         } else if (previous_)
1685                 return previous_->getParLanguage(bparams);
1686         else
1687                 return bparams.language;
1688 }
1689
1690
1691 bool Paragraph::isRightToLeftPar(BufferParams const & bparams) const
1692 {
1693         return lyxrc.rtl_support
1694                 && getParLanguage(bparams)->RightToLeft()
1695                 && !(inInset() && inInset()->owner() &&
1696                      inInset()->owner()->lyxCode() == Inset::ERT_CODE);
1697 }
1698
1699
1700 void Paragraph::changeLanguage(BufferParams const & bparams,
1701                                   Language const * from, Language const * to)
1702 {
1703         for (pos_type i = 0; i < size(); ++i) {
1704                 LyXFont font = getFontSettings(bparams, i);
1705                 if (font.language() == from) {
1706                         font.setLanguage(to);
1707                         setFont(i, font);
1708                 }
1709         }
1710 }
1711
1712
1713 bool Paragraph::isMultiLingual(BufferParams const & bparams)
1714 {
1715         Language const * doc_language = bparams.language;
1716         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
1717         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
1718
1719         for (; cit != end; ++cit)
1720                 if (cit->font().language() != ignore_language &&
1721                     cit->font().language() != latex_language &&
1722                         cit->font().language() != doc_language)
1723                         return true;
1724         return false;
1725 }
1726
1727
1728 // Convert the paragraph to a string.
1729 // Used for building the table of contents
1730 string const Paragraph::asString(Buffer const * buffer, bool label)
1731 {
1732         BufferParams const & bparams = buffer->params;
1733         string s;
1734         if (label && !params().labelString().empty())
1735                 s += params().labelString() + ' ';
1736         string::size_type const len = s.size();
1737
1738         for (pos_type i = 0; i < size(); ++i) {
1739                 value_type c = getChar(i);
1740                 if (IsPrintable(c))
1741                         s += c;
1742                 else if (c == META_INSET &&
1743                          getInset(i)->lyxCode() == Inset::MATH_CODE) {
1744                         ostringstream ost;
1745                         getInset(i)->ascii(buffer, ost);
1746                         s += subst(ost.str().c_str(),'\n',' ');
1747                 }
1748         }
1749
1750         if (isRightToLeftPar(bparams))
1751                 reverse(s.begin() + len,s.end());
1752
1753         return s;
1754 }
1755
1756
1757 string const Paragraph::asString(Buffer const * buffer,
1758                                  pos_type beg, pos_type end, bool label)
1759 {
1760         ostringstream ost;
1761
1762         if (beg == 0 && label && !params().labelString().empty())
1763                 ost << params().labelString() << ' ';
1764
1765         for (pos_type i = beg; i < end; ++i) {
1766                 value_type const c = getUChar(buffer->params, i);
1767                 if (IsPrintable(c))
1768                         ost << c;
1769                 else if (c == META_NEWLINE)
1770                         ost << '\n';
1771                 else if (c == META_HFILL)
1772                         ost << '\t';
1773                 else if (c == META_INSET) {
1774                         getInset(i)->ascii(buffer, ost);
1775                 }
1776         }
1777
1778         return ost.str().c_str();
1779 }
1780
1781
1782 void Paragraph::setInsetOwner(Inset * i)
1783 {
1784         pimpl_->inset_owner = i;
1785         InsetList::iterator it = insetlist.begin();
1786         InsetList::iterator end = insetlist.end();
1787         for (; it != end; ++it) {
1788                 if (it.getInset())
1789                         it.getInset()->setOwner(i);
1790         }
1791 }
1792
1793
1794 void Paragraph::deleteInsetsLyXText(BufferView * bv)
1795 {
1796         // then the insets
1797         insetlist.deleteInsetsLyXText(bv);
1798 }
1799
1800
1801 void Paragraph::resizeInsetsLyXText(BufferView * bv)
1802 {
1803         // then the insets
1804         insetlist.resizeInsetsLyXText(bv);
1805 }
1806
1807
1808 void Paragraph::setContentsFromPar(Paragraph * par)
1809 {
1810         pimpl_->setContentsFromPar(par);
1811 }
1812
1813
1814 lyx::pos_type Paragraph::size() const
1815 {
1816         return pimpl_->size();
1817 }
1818
1819
1820 bool Paragraph::empty() const
1821 {
1822         return pimpl_->empty();
1823 }
1824
1825
1826 Paragraph::value_type Paragraph::getChar(pos_type pos) const
1827 {
1828         return pimpl_->getChar(pos);
1829 }
1830
1831
1832 int Paragraph::id() const
1833 {
1834         return pimpl_->id_;
1835 }
1836
1837
1838 LyXLayout_ptr const & Paragraph::layout() const
1839 {
1840         return layout_;
1841 }
1842
1843
1844 void Paragraph::layout(LyXLayout_ptr const & new_layout)
1845 {
1846         layout_ = new_layout;
1847 }
1848
1849
1850 bool Paragraph::isFirstInSequence() const
1851 {
1852         Paragraph const * dhook = depthHook(getDepth());
1853         return (dhook == this
1854                 || dhook->layout() != layout()
1855                 || dhook->getDepth() != getDepth());
1856 }
1857
1858
1859 Inset * Paragraph::inInset() const
1860 {
1861         return pimpl_->inset_owner;
1862 }
1863
1864
1865 void Paragraph::clearContents()
1866 {
1867         pimpl_->clear();
1868 }
1869
1870 void Paragraph::setChar(pos_type pos, value_type c)
1871 {
1872         pimpl_->setChar(pos, c);
1873 }
1874
1875
1876 ParagraphParameters & Paragraph::params()
1877 {
1878         return pimpl_->params;
1879 }
1880
1881
1882 ParagraphParameters const & Paragraph::params() const
1883 {
1884         return pimpl_->params;
1885 }
1886
1887
1888 Paragraph * Paragraph::getParFromID(int id) const
1889 {
1890         return pimpl_->getParFromID(id);
1891 }
1892
1893
1894 bool Paragraph::isFreeSpacing() const
1895 {
1896         // for now we just need this, later should we need this in some
1897         // other way we can always add a function to Inset::() too.
1898         if (pimpl_->inset_owner && pimpl_->inset_owner->owner())
1899                 return (pimpl_->inset_owner->owner()->lyxCode() == Inset::ERT_CODE);
1900         return false;
1901 }