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/insetbib.h"
  33 #include "insets/insetoptarg.h"
  34
  35 #include "support/filetools.h"
  36 #include "support/lstrings.h"
  37 #include "support/lyxmanip.h"
  38 #include "support/FileInfo.h"
  39 #include "support/LAssert.h"
  40 #include "support/textutils.h"
  41
  42 #include <algorithm>
  43 #include <fstream>
  44 #include <csignal>
  45
  46 using std::ostream;
  47 using std::endl;
  48 using std::fstream;
  49 using std::ios;
  50 using std::lower_bound;
  51 using std::upper_bound;
  52 using std::reverse;
  53
  54 using lyx::pos_type;
  55
  56 // this is a bad idea, but how can Paragraph find its buffer to get
  57 // parameters? (JMarc)
  58
  59 extern string bibitemWidest(Buffer const *);
  60
  61 // this is a minibuffer
  62
  63 namespace {
  64
  65 char minibuffer_char;
  66 LyXFont minibuffer_font;
  67 Inset * minibuffer_inset;
  68
  69 } // namespace anon
  70
  71
  72 extern BufferView * current_view;
  73
  74
  75 Paragraph::Paragraph()
  76         : pimpl_(new Paragraph::Pimpl(this))
  77 {
  78 #ifndef NO_NEXT
  79         next_ = 0;
  80         previous_ = 0;
  81 #endif
  82         enumdepth = 0;
  83         itemdepth = 0;
  84         bibkey = 0; // ale970302
  85         params().clear();
  86 }
  87
  88
  89 #ifndef NO_NEXT
  90 // This constructor inserts the new paragraph in a list.
  91 Paragraph::Paragraph(Paragraph * par)
  92         : pimpl_(new Paragraph::Pimpl(this))
  93 {
  94         enumdepth = 0;
  95         itemdepth = 0;
  96
  97         // double linked list begin
  98         next_ = par->next_;
  99         if (next_)
 100                 next_->previous_ = this;
 101         previous_ = par;
 102         previous_->next_ = this;
 103         // end
 104
 105         bibkey = 0; // ale970302
 106         params().clear();
 107 }
 108 #endif
 109
 110
 111 Paragraph::Paragraph(Paragraph const & lp, bool same_ids)
 112         : pimpl_(new Paragraph::Pimpl(*lp.pimpl_, this, same_ids))
 113 {
 114         enumdepth = 0;
 115         itemdepth = 0;
 116 #ifndef NO_NEXT
 117         next_     = 0;
 118         previous_ = 0;
 119 #endif
 120         // this is because of the dummy layout of the paragraphs that
 121         // follow footnotes
 122         layout_ = lp.layout();
 123
 124         // ale970302
 125         if (lp.bibkey) {
 126                 bibkey = static_cast<InsetBibKey *>
 127                         (lp.bibkey->clone(*current_view->buffer()));
 128         } else {
 129                 bibkey = 0;
 130         }
 131
 132         // copy everything behind the break-position to the new paragraph
 133         insetlist = lp.insetlist;
 134         InsetList::iterator it = insetlist.begin();
 135         InsetList::iterator end = insetlist.end();
 136         for (; it != end; ++it) {
 137                 it.setInset(it.getInset()->clone(*current_view->buffer(),
 138                                                  same_ids));
 139                 // tell the new inset who is the boss now
 140                 it.getInset()->parOwner(this);
 141         }
 142 }
 143
 144
 145 // the destructor removes the new paragraph from the list
 146 Paragraph::~Paragraph()
 147 {
 148 #ifndef NO_NEXT
 149         if (previous_)
 150                 previous_->next_ = next_;
 151         if (next_)
 152                 next_->previous_ = previous_;
 153 #endif
 154
 155         // ale970302
 156         delete bibkey;
 157
 158         delete pimpl_;
 159         //
 160         //lyxerr << "Paragraph::paragraph_id = "
 161         //       << Paragraph::paragraph_id << endl;
 162 }
 163
 164
 165 void Paragraph::write(Buffer const * buf, ostream & os,
 166                           BufferParams const & bparams,
 167                           depth_type & dth) const
 168 {
 169         // The beginning or end of a deeper (i.e. nested) area?
 170         if (dth != params().depth()) {
 171                 if (params().depth() > dth) {
 172                         while (params().depth() > dth) {
 173                                 os << "\n\\begin_deeper ";
 174                                 ++dth;
 175                         }
 176                 } else {
 177                         while (params().depth() < dth) {
 178                                 os << "\n\\end_deeper ";
 179                                 --dth;
 180                         }
 181                 }
 182         }
 183
 184         // First write the layout
 185         os << "\n\\layout " << layout()->name() << '\n';
 186
 187         // Maybe some vertical spaces.
 188         if (params().spaceTop().kind() != VSpace::NONE)
 189                 os << "\\added_space_top "
 190                    << params().spaceTop().asLyXCommand() << ' ';
 191         if (params().spaceBottom().kind() != VSpace::NONE)
 192                 os << "\\added_space_bottom "
 193                    << params().spaceBottom().asLyXCommand() << ' ';
 194
 195         // Maybe the paragraph has special spacing
 196         params().spacing().writeFile(os, true);
 197
 198         // The labelwidth string used in lists.
 199         if (!params().labelWidthString().empty())
 200                 os << "\\labelwidthstring "
 201                    << params().labelWidthString() << '\n';
 202
 203         // Lines above or below?
 204         if (params().lineTop())
 205                 os << "\\line_top ";
 206         if (params().lineBottom())
 207                 os << "\\line_bottom ";
 208
 209         // Pagebreaks above or below?
 210         if (params().pagebreakTop())
 211                 os << "\\pagebreak_top ";
 212         if (params().pagebreakBottom())
 213                 os << "\\pagebreak_bottom ";
 214
 215         // Start of appendix?
 216         if (params().startOfAppendix())
 217                 os << "\\start_of_appendix ";
 218
 219         // Noindent?
 220         if (params().noindent())
 221                 os << "\\noindent ";
 222
 223         // Do we have a manual left indent?
 224         if (!params().leftIndent().zero())
 225                 os << "\\leftindent " << params().leftIndent().asString()
 226                    << ' ';
 227
 228         // Alignment?
 229         if (params().align() != LYX_ALIGN_LAYOUT) {
 230                 int h = 0;
 231                 switch (params().align()) {
 232                 case LYX_ALIGN_LEFT: h = 1; break;
 233                 case LYX_ALIGN_RIGHT: h = 2; break;
 234                 case LYX_ALIGN_CENTER: h = 3; break;
 235                 default: h = 0; break;
 236                 }
 237                 os << "\\align " << string_align[h] << ' ';
 238         }
 239
 240         // bibitem  ale970302
 241         if (bibkey)
 242                 bibkey->write(buf, os);
 243
 244         LyXFont font1(LyXFont::ALL_INHERIT, bparams.language);
 245
 246         int column = 0;
 247         for (pos_type i = 0; i < size(); ++i) {
 248                 if (!i) {
 249                         os << '\n';
 250                         column = 0;
 251                 }
 252
 253                 // Write font changes
 254                 LyXFont font2 = getFontSettings(bparams, i);
 255                 if (font2 != font1) {
 256                         font2.lyxWriteChanges(font1, os);
 257                         column = 0;
 258                         font1 = font2;
 259                 }
 260
 261                 value_type const c = getChar(i);
 262                 switch (c) {
 263                 case META_INSET:
 264                 {
 265                         Inset const * inset = getInset(i);
 266                         if (inset)
 267                                 if (inset->directWrite()) {
 268                                         // international char, let it write
 269                                         // code directly so it's shorter in
 270                                         // the file
 271                                         inset->write(buf, os);
 272                                 } else {
 273                                         os << "\n\\begin_inset ";
 274                                         inset->write(buf, os);
 275                                         os << "\n\\end_inset \n\n";
 276                                         column = 0;
 277                                 }
 278                 }
 279                 break;
 280                 case META_NEWLINE:
 281                         os << "\n\\newline \n";
 282                         column = 0;
 283                         break;
 284                 case META_HFILL:
 285                         os << "\n\\hfill \n";
 286                         column = 0;
 287                         break;
 288                 case '\\':
 289                         os << "\n\\backslash \n";
 290                         column = 0;
 291                         break;
 292                 case '.':
 293                         if (i + 1 < size() && getChar(i + 1) == ' ') {
 294                                 os << ".\n";
 295                                 column = 0;
 296                         } else
 297                                 os << '.';
 298                         break;
 299                 default:
 300                         if ((column > 70 && c == ' ')
 301                             || column > 79) {
 302                                 os << '\n';
 303                                 column = 0;
 304                         }
 305                         // this check is to amend a bug. LyX sometimes
 306                         // inserts '\0' this could cause problems.
 307                         if (c != '\0')
 308                                 os << c;
 309                         else
 310                                 lyxerr << "ERROR (Paragraph::writeFile):"
 311                                         " NULL char in structure." << endl;
 312                         ++column;
 313                         break;
 314                 }
 315         }
 316 }
 317
 318
 319 void Paragraph::validate(LaTeXFeatures & features) const
 320 {
 321         pimpl_->validate(features, *layout());
 322 }
 323
 324
 325 // First few functions needed for cut and paste and paragraph breaking.
 326 void Paragraph::copyIntoMinibuffer(Buffer const & buffer, pos_type pos) const
 327 {
 328         BufferParams bparams = buffer.params;
 329
 330         minibuffer_char = getChar(pos);
 331         minibuffer_font = getFontSettings(bparams, pos);
 332         minibuffer_inset = 0;
 333         if (minibuffer_char == Paragraph::META_INSET) {
 334                 if (getInset(pos)) {
 335                         minibuffer_inset = getInset(pos)->clone(buffer);
 336                 } else {
 337                         minibuffer_inset = 0;
 338                         minibuffer_char = ' ';
 339                         // This reflects what GetInset() does (ARRae)
 340                 }
 341         }
 342 }
 343
 344
 345 void Paragraph::cutIntoMinibuffer(BufferParams const & bparams, pos_type pos)
 346 {
 347         minibuffer_char = getChar(pos);
 348         minibuffer_font = getFontSettings(bparams, pos);
 349         minibuffer_inset = 0;
 350         if (minibuffer_char == Paragraph::META_INSET) {
 351                 if (getInset(pos)) {
 352                         // the inset is not in a paragraph anymore
 353                         minibuffer_inset = insetlist.release(pos);
 354                         minibuffer_inset->parOwner(0);
 355                 } else {
 356                         minibuffer_inset = 0;
 357                         minibuffer_char = ' ';
 358                         // This reflects what GetInset() does (ARRae)
 359                 }
 360
 361         }
 362
 363         // Erase(pos); now the caller is responsible for that.
 364 }
 365
 366
 367 bool Paragraph::insertFromMinibuffer(pos_type pos)
 368 {
 369         if (minibuffer_char == Paragraph::META_INSET) {
 370                 if (!insetAllowed(minibuffer_inset->lyxCode())) {
 371                         return false;
 372                 }
 373                 insertInset(pos, minibuffer_inset, minibuffer_font);
 374         } else {
 375                 LyXFont f = minibuffer_font;
 376                 if (!checkInsertChar(f)) {
 377                         return false;
 378                 }
 379                 insertChar(pos, minibuffer_char, f);
 380         }
 381         return true;
 382 }
 383
 384 // end of minibuffer
 385
 386
 387 void Paragraph::erase(pos_type pos)
 388 {
 389         pimpl_->erase(pos);
 390 }
 391
 392
 393 bool Paragraph::checkInsertChar(LyXFont & font)
 394 {
 395         if (pimpl_->inset_owner)
 396                 return pimpl_->inset_owner->checkInsertChar(font);
 397         return true;
 398 }
 399
 400
 401 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c)
 402 {
 403         LyXFont const f(LyXFont::ALL_INHERIT);
 404         insertChar(pos, c, f);
 405 }
 406
 407
 408 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 409                            LyXFont const & font)
 410 {
 411         pimpl_->insertChar(pos, c, font);
 412 }
 413
 414
 415 void Paragraph::insertInset(pos_type pos, Inset * inset)
 416 {
 417         LyXFont const f(LyXFont::ALL_INHERIT);
 418         insertInset(pos, inset, f);
 419 }
 420
 421
 422 void Paragraph::insertInset(pos_type pos, Inset * inset, LyXFont const & font)
 423 {
 424         pimpl_->insertInset(pos, inset, font);
 425 }
 426
 427
 428 bool Paragraph::insetAllowed(Inset::Code code)
 429 {
 430         //lyxerr << "Paragraph::InsertInsetAllowed" << endl;
 431
 432         if (pimpl_->inset_owner)
 433                 return pimpl_->inset_owner->insetAllowed(code);
 434         return true;
 435 }
 436
 437
 438 Inset * Paragraph::getInset(pos_type pos)
 439 {
 440         lyx::Assert(pos < size());
 441
 442         return insetlist.get(pos);
 443 }
 444
 445
 446 Inset const * Paragraph::getInset(pos_type pos) const
 447 {
 448         lyx::Assert(pos < size());
 449
 450         return insetlist.get(pos);
 451 }
 452
 453
 454 // Gets uninstantiated font setting at position.
 455 LyXFont const Paragraph::getFontSettings(BufferParams const & bparams,
 456                                          pos_type pos) const
 457 {
 458         lyx::Assert(pos <= size());
 459
 460         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 461         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 462         for (; cit != end; ++cit) {
 463                 if (cit->pos() >= pos)
 464                         break;
 465         }
 466
 467         LyXFont retfont;
 468         if (cit != end) {
 469                 retfont = cit->font();
 470         } else if (pos == size() && !empty()) {
 471                 retfont = getFontSettings(bparams, pos - 1);
 472         } else
 473                 retfont = LyXFont(LyXFont::ALL_INHERIT, getParLanguage(bparams));
 474
 475         return retfont;
 476 }
 477
 478
 479 // Gets uninstantiated font setting at position 0
 480 LyXFont const Paragraph::getFirstFontSettings() const
 481 {
 482         if (!empty() && !pimpl_->fontlist.empty())
 483                 return pimpl_->fontlist[0].font();
 484
 485         return LyXFont(LyXFont::ALL_INHERIT);
 486 }
 487
 488
 489 // Gets the fully instantiated font at a given position in a paragraph
 490 // This is basically the same function as LyXText::GetFont() in text2.C.
 491 // The difference is that this one is used for generating the LaTeX file,
 492 // and thus cosmetic "improvements" are disallowed: This has to deliver
 493 // the true picture of the buffer. (Asger)
 494 // If position is -1, we get the layout font of the paragraph.
 495 // If position is -2, we get the font of the manual label of the paragraph.
 496 LyXFont const Paragraph::getFont(BufferParams const & bparams,
 497                                  pos_type pos) const
 498 {
 499         lyx::Assert(pos >= 0);
 500
 501         LyXLayout_ptr const & lout = layout();
 502
 503         pos_type main_body = 0;
 504         if (lout->labeltype == LABEL_MANUAL)
 505                 main_body = beginningOfMainBody();
 506
 507         LyXFont layoutfont;
 508         if (pos < main_body)
 509                 layoutfont = lout->labelfont;
 510         else
 511                 layoutfont = lout->font;
 512
 513         LyXFont tmpfont = getFontSettings(bparams, pos);
 514         tmpfont.realize(layoutfont);
 515
 516         return pimpl_->realizeFont(tmpfont, bparams);
 517 }
 518
 519
 520 LyXFont const Paragraph::getLabelFont(BufferParams const & bparams) const
 521 {
 522         LyXLayout_ptr const & lout = layout();
 523
 524         LyXFont tmpfont = lout->labelfont;
 525         tmpfont.setLanguage(getParLanguage(bparams));
 526
 527         return pimpl_->realizeFont(tmpfont, bparams);
 528 }
 529
 530
 531 LyXFont const Paragraph::getLayoutFont(BufferParams const & bparams) const
 532 {
 533         LyXLayout_ptr const & lout = layout();
 534
 535         LyXFont tmpfont = lout->font;
 536         tmpfont.setLanguage(getParLanguage(bparams));
 537
 538         return pimpl_->realizeFont(tmpfont, bparams);
 539 }
 540
 541
 542 /// Returns the height of the highest font in range
 543 LyXFont::FONT_SIZE
 544 Paragraph::highestFontInRange(pos_type startpos, pos_type endpos,
 545                               LyXFont::FONT_SIZE const def_size) const
 546 {
 547         if (pimpl_->fontlist.empty())
 548                 return def_size;
 549
 550         Pimpl::FontList::const_iterator end_it = pimpl_->fontlist.begin();
 551         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 552         for (; end_it != end; ++end_it) {
 553                 if (end_it->pos() >= endpos)
 554                         break;
 555         }
 556
 557         if (end_it != end)
 558                 ++end_it;
 559
 560         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 561         for (; cit != end; ++cit) {
 562                 if (cit->pos() >= startpos)
 563                         break;
 564         }
 565
 566         LyXFont::FONT_SIZE maxsize = LyXFont::SIZE_TINY;
 567         for (; cit != end_it; ++cit) {
 568                 LyXFont::FONT_SIZE size = cit->font().size();
 569                 if (size == LyXFont::INHERIT_SIZE)
 570                         size = def_size;
 571                 if (size > maxsize && size <= LyXFont::SIZE_HUGER)
 572                         maxsize = size;
 573         }
 574         return maxsize;
 575 }
 576
 577
 578 Paragraph::value_type
 579 Paragraph::getUChar(BufferParams const & bparams, pos_type pos) const
 580 {
 581         value_type c = getChar(pos);
 582         if (!lyxrc.rtl_support)
 583                 return c;
 584
 585         value_type uc = c;
 586         switch (c) {
 587         case '(':
 588                 uc = ')';
 589                 break;
 590         case ')':
 591                 uc = '(';
 592                 break;
 593         case '[':
 594                 uc = ']';
 595                 break;
 596         case ']':
 597                 uc = '[';
 598                 break;
 599         case '{':
 600                 uc = '}';
 601                 break;
 602         case '}':
 603                 uc = '{';
 604                 break;
 605         case '<':
 606                 uc = '>';
 607                 break;
 608         case '>':
 609                 uc = '<';
 610                 break;
 611         }
 612         if (uc != c && getFontSettings(bparams, pos).isRightToLeft())
 613                 return uc;
 614         else
 615                 return c;
 616 }
 617
 618
 619 void Paragraph::setFont(pos_type pos, LyXFont const & font)
 620 {
 621         lyx::Assert(pos <= size());
 622
 623         // First, reduce font against layout/label font
 624         // Update: The SetCharFont() routine in text2.C already
 625         // reduces font, so we don't need to do that here. (Asger)
 626         // No need to simplify this because it will disappear
 627         // in a new kernel. (Asger)
 628         // Next search font table
 629
 630         Pimpl::FontList::iterator beg = pimpl_->fontlist.begin();
 631         Pimpl::FontList::iterator it = beg;
 632         Pimpl::FontList::iterator endit = pimpl_->fontlist.end();
 633         for (; it != endit; ++it) {
 634                 if (it->pos() >= pos)
 635                         break;
 636         }
 637         unsigned int i = std::distance(beg, it);
 638         bool notfound = (it == endit);
 639
 640         if (!notfound && pimpl_->fontlist[i].font() == font)
 641                 return;
 642
 643         bool begin = pos == 0 || notfound ||
 644                 (i > 0 && pimpl_->fontlist[i - 1].pos() == pos - 1);
 645         // Is position pos is a beginning of a font block?
 646         bool end = !notfound && pimpl_->fontlist[i].pos() == pos;
 647         // Is position pos is the end of a font block?
 648         if (begin && end) { // A single char block
 649                 if (i + 1 < pimpl_->fontlist.size() &&
 650                     pimpl_->fontlist[i + 1].font() == font) {
 651                         // Merge the singleton block with the next block
 652                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 653                         if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 654                                 pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i - 1);
 655                 } else if (i > 0 && pimpl_->fontlist[i - 1].font() == font) {
 656                         // Merge the singleton block with the previous block
 657                         pimpl_->fontlist[i - 1].pos(pos);
 658                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 659                 } else
 660                         pimpl_->fontlist[i].font(font);
 661         } else if (begin) {
 662                 if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 663                         pimpl_->fontlist[i - 1].pos(pos);
 664                 else
 665                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 666                                         Pimpl::FontTable(pos, font));
 667         } else if (end) {
 668                 pimpl_->fontlist[i].pos(pos - 1);
 669                 if (!(i + 1 < pimpl_->fontlist.size() &&
 670                       pimpl_->fontlist[i + 1].font() == font))
 671                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 672                                         Pimpl::FontTable(pos, font));
 673         } else { // The general case. The block is splitted into 3 blocks
 674                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 675                                 Pimpl::FontTable(pos - 1, pimpl_->fontlist[i].font()));
 676                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 677                                 Pimpl::FontTable(pos, font));
 678         }
 679 }
 680
 681
 682 #ifndef NO_NEXT
 683 void Paragraph::next(Paragraph * p)
 684 {
 685         next_ = p;
 686 }
 687
 688
 689 // This function is able to hide closed footnotes.
 690 Paragraph * Paragraph::next()
 691 {
 692         return next_;
 693 }
 694
 695
 696 Paragraph const * Paragraph::next() const
 697 {
 698         return next_;
 699 }
 700
 701
 702 void Paragraph::previous(Paragraph * p)
 703 {
 704         previous_ = p;
 705 }
 706
 707
 708 // This function is able to hide closed footnotes.
 709 Paragraph * Paragraph::previous()
 710 {
 711         return previous_;
 712 }
 713
 714
 715 // This function is able to hide closed footnotes.
 716 Paragraph const * Paragraph::previous() const
 717 {
 718         return previous_;
 719 }
 720 #endif
 721
 722
 723 void Paragraph::makeSameLayout(Paragraph const * par)
 724 {
 725         layout(par->layout());
 726         // move to pimpl?
 727         params() = par->params();
 728 }
 729
 730
 731 int Paragraph::stripLeadingSpaces()
 732 {
 733         if (layout()->free_spacing ||
 734             isFreeSpacing()) {
 735                 return 0;
 736         }
 737
 738         int i = 0;
 739         while (!empty() && (isNewline(0) || isLineSeparator(0))) {
 740                 erase(0);
 741                 ++i;
 742         }
 743
 744         return i;
 745 }
 746
 747
 748 bool Paragraph::hasSameLayout(Paragraph const * par) const
 749 {
 750         return
 751                 par->layout() == layout() &&
 752                 params().sameLayout(par->params());
 753 }
 754
 755
 756 int Paragraph::getEndLabel() const
 757 {
 758         Paragraph const * par = this;
 759         depth_type par_depth = getDepth();
 760         while (par) {
 761                 LyXLayout_ptr const & layout = par->layout();
 762                 int const endlabeltype = layout->endlabeltype;
 763
 764                 if (endlabeltype != END_LABEL_NO_LABEL) {
 765                         if (!next_)
 766                                 return endlabeltype;
 767
 768                         depth_type const next_depth = next_->getDepth();
 769                         if (par_depth > next_depth ||
 770                             (par_depth == next_depth
 771                              && layout != next_->layout()))
 772                                 return endlabeltype;
 773                         break;
 774                 }
 775                 if (par_depth == 0)
 776                         break;
 777                 par = par->outerHook();
 778                 if (par)
 779                         par_depth = par->getDepth();
 780         }
 781         return END_LABEL_NO_LABEL;
 782 }
 783
 784
 785 Paragraph::depth_type Paragraph::getDepth() const
 786 {
 787         return params().depth();
 788 }
 789
 790
 791 Paragraph::depth_type Paragraph::getMaxDepthAfter() const
 792 {
 793         bool const isenv = layout()->isEnvironment();
 794
 795         if (isenv)
 796                 return params().depth() + 1;
 797         else
 798                 return params().depth();
 799
 800 }
 801
 802 char Paragraph::getAlign() const
 803 {
 804         return params().align();
 805 }
 806
 807
 808 string const & Paragraph::getLabelstring() const
 809 {
 810         return params().labelString();
 811 }
 812
 813
 814 // the next two functions are for the manual labels
 815 string const Paragraph::getLabelWidthString() const
 816 {
 817         if (!params().labelWidthString().empty())
 818                 return params().labelWidthString();
 819         else
 820                 return _("Senseless with this layout!");
 821 }
 822
 823
 824 void Paragraph::setLabelWidthString(string const & s)
 825 {
 826         params().labelWidthString(s);
 827 }
 828
 829
 830 void Paragraph::applyLayout(LyXLayout_ptr const & new_layout)
 831 {
 832         layout(new_layout);
 833         params().labelWidthString(string());
 834         params().align(LYX_ALIGN_LAYOUT);
 835         params().spaceTop(VSpace(VSpace::NONE));
 836         params().spaceBottom(VSpace(VSpace::NONE));
 837         params().spacing(Spacing(Spacing::Default));
 838 }
 839
 840
 841 // if the layout of a paragraph contains a manual label, the beginning of the
 842 // main body is the beginning of the second word. This is what the par-
 843 // function returns. If the layout does not contain a label, the main
 844 // body always starts with position 0. This differentiation is necessary,
 845 // because there cannot be a newline or a blank <= the beginning of the
 846 // main body in TeX.
 847
 848 int Paragraph::beginningOfMainBody() const
 849 {
 850         // Unroll the first two cycles of the loop
 851         // and remember the previous character to
 852         // remove unnecessary GetChar() calls
 853         pos_type i = 0;
 854         if (i < size() && getChar(i) != Paragraph::META_NEWLINE) {
 855                 ++i;
 856                 char previous_char = 0;
 857                 char temp = 0;
 858                 if (i < size()
 859                     && (previous_char = getChar(i)) != Paragraph::META_NEWLINE) {
 860                         // Yes, this  ^ is supposed to be "= " not "=="
 861                         ++i;
 862                         while (i < size()
 863                                && previous_char != ' '
 864                                && (temp = getChar(i)) != Paragraph::META_NEWLINE) {
 865                                 ++i;
 866                                 previous_char = temp;
 867                         }
 868                 }
 869         }
 870
 871         return i;
 872 }
 873
 874
 875 Paragraph * Paragraph::depthHook(depth_type depth)
 876 {
 877         Paragraph * newpar = this;
 878
 879         do {
 880                 newpar = newpar->previous();
 881         } while (newpar && newpar->getDepth() > depth);
 882
 883         if (!newpar) {
 884                 if (previous() || getDepth())
 885                         lyxerr << "ERROR (Paragraph::DepthHook): "
 886                                 "no hook." << endl;
 887                 newpar = this;
 888         }
 889
 890         return newpar;
 891 }
 892
 893
 894 Paragraph const * Paragraph::depthHook(depth_type depth) const
 895 {
 896         Paragraph const * newpar = this;
 897
 898         do {
 899                 newpar = newpar->previous();
 900         } while (newpar && newpar->getDepth() > depth);
 901
 902         if (!newpar) {
 903                 if (previous() || getDepth())
 904                         lyxerr << "ERROR (Paragraph::DepthHook): "
 905                                 "no hook." << endl;
 906                 newpar = this;
 907         }
 908
 909         return newpar;
 910 }
 911
 912
 913 Paragraph * Paragraph::outerHook()
 914 {
 915         if (!getDepth())
 916                 return 0;
 917         return depthHook(depth_type(getDepth() - 1));
 918 }
 919
 920
 921 Paragraph const * Paragraph::outerHook() const
 922 {
 923         if (!getDepth())
 924                 return 0;
 925         return depthHook(depth_type(getDepth() - 1));
 926 }
 927
 928
 929 // returns -1 if inset not found
 930 int Paragraph::getPositionOfInset(Inset const * inset) const
 931 {
 932         // Find the entry.
 933         InsetList::iterator it = insetlist.begin();
 934         InsetList::iterator end = insetlist.end();
 935         for (; it != end; ++it) {
 936                 if (it.getInset() == inset) {
 937                         return it.getPos();
 938                 }
 939         }
 940         if (inset == bibkey)
 941                 return 0;
 942
 943         return -1;
 944 }
 945
 946 namespace {
 947
 948 InsetOptArg * optArgInset(Paragraph const & par)
 949 {
 950         // Find the entry.
 951         InsetList::iterator it = par.insetlist.begin();
 952         InsetList::iterator end = par.insetlist.end();
 953         for (; it != end; ++it) {
 954                 Inset * ins = it.getInset();
 955                 if (ins->lyxCode() == Inset::OPTARG_CODE) {
 956                         return static_cast<InsetOptArg *>(ins);
 957                 }
 958         }
 959         return 0;
 960 }
 961
 962 } // end namespace
 963
 964 Paragraph * Paragraph::TeXOnePar(Buffer const * buf,
 965                                  BufferParams const & bparams,
 966                                  ostream & os, TexRow & texrow,
 967                                  bool moving_arg)
 968 {
 969         lyxerr[Debug::LATEX] << "TeXOnePar...     " << this << endl;
 970         Inset const * in = inInset();
 971         bool further_blank_line = false;
 972         LyXLayout_ptr style;
 973
 974         // well we have to check if we are in an inset with unlimited
 975         // lenght (all in one row) if that is true then we don't allow
 976         // any special options in the paragraph and also we don't allow
 977         // any environment other then "Standard" to be valid!
 978         if ((in == 0) || !in->forceDefaultParagraphs(in)) {
 979                 style = layout();
 980
 981                 if (params().startOfAppendix()) {
 982                         os << "\\appendix\n";
 983                         texrow.newline();
 984                 }
 985
 986                 if (!params().spacing().isDefault()
 987                         && (!previous() || !previous()->hasSameLayout(this))) {
 988                         os << params().spacing().writeEnvirBegin() << '\n';
 989                         texrow.newline();
 990                 }
 991
 992                 if (style->isCommand()) {
 993                         os << '\n';
 994                         texrow.newline();
 995                 }
 996
 997                 if (params().pagebreakTop()) {
 998                         os << "\\newpage";
 999                         further_blank_line = true;
1000                 }
1001                 if (params().spaceTop().kind() != VSpace::NONE) {
1002                         os << params().spaceTop().asLatexCommand(bparams);
1003                         further_blank_line = true;
1004                 }
1005
1006                 if (params().lineTop()) {
1007                         os << "\\lyxline{\\" << getFont(bparams, 0).latexSize() << '}'
1008                            << "\\vspace{-1\\parskip}";
1009                         further_blank_line = true;
1010                 }
1011
1012                 if (further_blank_line) {
1013                         os << '\n';
1014                         texrow.newline();
1015                 }
1016         } else {
1017                 style = bparams.getLyXTextClass().defaultLayout();
1018         }
1019
1020         Language const * language = getParLanguage(bparams);
1021         Language const * doc_language = bparams.language;
1022         Language const * previous_language = previous()
1023                 ? previous()->getParLanguage(bparams) : doc_language;
1024
1025         if (language->babel() != previous_language->babel()
1026             // check if we already put language command in TeXEnvironment()
1027             && !(style->isEnvironment()
1028                  && (!previous() ||
1029                      (previous()->layout() != layout() &&
1030                       previous()->getDepth() <= getDepth())
1031                      || previous()->getDepth() < getDepth())))
1032         {
1033                 if (!lyxrc.language_command_end.empty() &&
1034                     previous_language->babel() != doc_language->babel())
1035                 {
1036                         os << subst(lyxrc.language_command_end, "$$lang",
1037                                     previous_language->babel())
1038                            << endl;
1039                         texrow.newline();
1040                 }
1041
1042                 if (lyxrc.language_command_end.empty() ||
1043                     language->babel() != doc_language->babel())
1044                 {
1045                         os << subst(lyxrc.language_command_begin, "$$lang",
1046                                     language->babel())
1047                            << endl;
1048                         texrow.newline();
1049                 }
1050         }
1051
1052         if (bparams.inputenc == "auto" &&
1053             language->encoding() != previous_language->encoding()) {
1054                 os << "\\inputencoding{"
1055                    << language->encoding()->LatexName()
1056                    << "}\n";
1057                 texrow.newline();
1058         }
1059
1060         switch (style->latextype) {
1061         case LATEX_COMMAND:
1062                 os << '\\'
1063                    << style->latexname();
1064
1065                 // Separate handling of optional argument inset.
1066                 if (style->optionalargs == 1) {
1067                         InsetOptArg * it = optArgInset(*this);
1068                         if (it != 0)
1069                                 it->latexOptional(buf, os, false, false);
1070                 }
1071                 else
1072                         os << style->latexparam();
1073                 break;
1074         case LATEX_ITEM_ENVIRONMENT:
1075                 if (bibkey) {
1076                         bibkey->latex(buf, os, false, false);
1077                 } else
1078                         os << "\\item ";
1079                 break;
1080         case LATEX_LIST_ENVIRONMENT:
1081                 os << "\\item ";
1082                 break;
1083         default:
1084                 break;
1085         }
1086
1087         bool need_par = simpleTeXOnePar(buf, bparams, os, texrow, moving_arg);
1088
1089         // Make sure that \\par is done with the font of the last
1090         // character if this has another size as the default.
1091         // This is necessary because LaTeX (and LyX on the screen)
1092         // calculates the space between the baselines according
1093         // to this font. (Matthias)
1094         //
1095         // Is this really needed ? (Dekel)
1096         // We do not need to use to change the font for the last paragraph
1097         // or for a command.
1098         LyXFont const font =
1099                 (empty()
1100                  ? getLayoutFont(bparams) : getFont(bparams, size() - 1));
1101
1102         bool is_command = style->isCommand();
1103
1104         if (style->resfont.size() != font.size() && next_ && !is_command) {
1105                 if (!need_par)
1106                         os << '{';
1107                 os << "\\" << font.latexSize() << " \\par}";
1108         } else if (need_par) {
1109                 os << "\\par}";
1110         } else if (is_command)
1111                 os << '}';
1112
1113         switch (style->latextype) {
1114         case LATEX_ITEM_ENVIRONMENT:
1115         case LATEX_LIST_ENVIRONMENT:
1116                 if (next_ && (params().depth() < next_->params().depth())) {
1117                         os << '\n';
1118                         texrow.newline();
1119                 }
1120                 break;
1121         case LATEX_ENVIRONMENT:
1122                 // if its the last paragraph of the current environment
1123                 // skip it otherwise fall through
1124                 if (next_
1125                     && (next_->layout() != layout()
1126                         || next_->params().depth() != params().depth()))
1127                         break;
1128                 // fall through possible
1129         default:
1130                 // we don't need it for the last paragraph!!!
1131                 if (next_) {
1132                         os << '\n';
1133                         texrow.newline();
1134                 }
1135         }
1136
1137         if ((in == 0) || !in->forceDefaultParagraphs(in)) {
1138                 further_blank_line = false;
1139                 if (params().lineBottom()) {
1140                         os << "\\lyxline{\\" << font.latexSize() << '}';
1141                         further_blank_line = true;
1142                 }
1143
1144                 if (params().spaceBottom().kind() != VSpace::NONE) {
1145                         os << params().spaceBottom().asLatexCommand(bparams);
1146                         further_blank_line = true;
1147                 }
1148
1149                 if (params().pagebreakBottom()) {
1150                         os << "\\newpage";
1151                         further_blank_line = true;
1152                 }
1153
1154                 if (further_blank_line) {
1155                         os << '\n';
1156                         texrow.newline();
1157                 }
1158
1159                 if (!params().spacing().isDefault()
1160                         && (!next_ || !next_->hasSameLayout(this))) {
1161                         os << params().spacing().writeEnvirEnd() << '\n';
1162                         texrow.newline();
1163                 }
1164         }
1165
1166         // we don't need it for the last paragraph!!!
1167         if (next_) {
1168                 os << '\n';
1169                 texrow.newline();
1170         } else {
1171                 // Since \selectlanguage write the language to the aux file,
1172                 // we need to reset the language at the end of footnote or
1173                 // float.
1174
1175                 if (language->babel() != doc_language->babel()) {
1176                         if (lyxrc.language_command_end.empty())
1177                                 os << subst(lyxrc.language_command_begin,
1178                                             "$$lang",
1179                                             doc_language->babel())
1180                                    << endl;
1181                         else
1182                                 os << subst(lyxrc.language_command_end,
1183                                             "$$lang",
1184                                             language->babel())
1185                                    << endl;
1186                         texrow.newline();
1187                 }
1188         }
1189
1190         lyxerr[Debug::LATEX] << "TeXOnePar...done " << next_ << endl;
1191         return next_;
1192 }
1193
1194
1195 // This could go to ParagraphParameters if we want to
1196 int Paragraph::startTeXParParams(BufferParams const & bparams,
1197                                  ostream & os, bool moving_arg) const
1198 {
1199         int column = 0;
1200
1201         if (params().noindent()) {
1202                 os << "\\noindent ";
1203                 column += 10;
1204         }
1205
1206         switch (params().align()) {
1207         case LYX_ALIGN_NONE:
1208         case LYX_ALIGN_BLOCK:
1209         case LYX_ALIGN_LAYOUT:
1210         case LYX_ALIGN_SPECIAL:
1211                 break;
1212         case LYX_ALIGN_LEFT:
1213         case LYX_ALIGN_RIGHT:
1214         case LYX_ALIGN_CENTER:
1215                 if (moving_arg) {
1216                         os << "\\protect";
1217                         column = 8;
1218                 }
1219                 break;
1220         }
1221
1222         switch (params().align()) {
1223         case LYX_ALIGN_NONE:
1224         case LYX_ALIGN_BLOCK:
1225         case LYX_ALIGN_LAYOUT:
1226         case LYX_ALIGN_SPECIAL:
1227                 break;
1228         case LYX_ALIGN_LEFT:
1229                 if (getParLanguage(bparams)->babel() != "hebrew") {
1230                         os << "\\begin{flushleft}";
1231                         column += 17;
1232                 } else {
1233                         os << "\\begin{flushright}";
1234                         column += 18;
1235                 }
1236                 break;
1237         case LYX_ALIGN_RIGHT:
1238                 if (getParLanguage(bparams)->babel() != "hebrew") {
1239                         os << "\\begin{flushright}";
1240                         column += 18;
1241                 } else {
1242                         os << "\\begin{flushleft}";
1243                         column += 17;
1244                 }
1245                 break;
1246         case LYX_ALIGN_CENTER:
1247                 os << "\\begin{center}";
1248                 column += 14;
1249                 break;
1250         }
1251
1252         return column;
1253 }
1254
1255
1256 // This could go to ParagraphParameters if we want to
1257 int Paragraph::endTeXParParams(BufferParams const & bparams,
1258                                ostream & os, bool moving_arg) const
1259 {
1260         int column = 0;
1261
1262         switch (params().align()) {
1263         case LYX_ALIGN_NONE:
1264         case LYX_ALIGN_BLOCK:
1265         case LYX_ALIGN_LAYOUT:
1266         case LYX_ALIGN_SPECIAL:
1267                 break;
1268         case LYX_ALIGN_LEFT:
1269         case LYX_ALIGN_RIGHT:
1270         case LYX_ALIGN_CENTER:
1271                 if (moving_arg) {
1272                         os << "\\protect";
1273                         column = 8;
1274                 }
1275                 break;
1276         }
1277
1278         switch (params().align()) {
1279         case LYX_ALIGN_NONE:
1280         case LYX_ALIGN_BLOCK:
1281         case LYX_ALIGN_LAYOUT:
1282         case LYX_ALIGN_SPECIAL:
1283                 break;
1284         case LYX_ALIGN_LEFT:
1285                 if (getParLanguage(bparams)->babel() != "hebrew") {
1286                         os << "\\end{flushleft}";
1287                         column = 15;
1288                 } else {
1289                         os << "\\end{flushright}";
1290                         column = 16;
1291                 }
1292                 break;
1293         case LYX_ALIGN_RIGHT:
1294                 if (getParLanguage(bparams)->babel() != "hebrew") {
1295                         os << "\\end{flushright}";
1296                         column+= 16;
1297                 } else {
1298                         os << "\\end{flushleft}";
1299                         column = 15;
1300                 }
1301                 break;
1302         case LYX_ALIGN_CENTER:
1303                 os << "\\end{center}";
1304                 column = 12;
1305                 break;
1306         }
1307         return column;
1308 }
1309
1310
1311 // This one spits out the text of the paragraph
1312 bool Paragraph::simpleTeXOnePar(Buffer const * buf,
1313                                 BufferParams const & bparams,
1314                                 ostream & os, TexRow & texrow,
1315                                 bool moving_arg)
1316 {
1317         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...     " << this << endl;
1318
1319         bool return_value = false;
1320
1321         LyXLayout_ptr style;
1322
1323         // well we have to check if we are in an inset with unlimited
1324         // lenght (all in one row) if that is true then we don't allow
1325         // any special options in the paragraph and also we don't allow
1326         // any environment other then "Standard" to be valid!
1327         bool asdefault =
1328                 (inInset() && inInset()->forceDefaultParagraphs(inInset()));
1329
1330         if (asdefault) {
1331                 style = bparams.getLyXTextClass().defaultLayout();
1332         } else {
1333                 style = layout();
1334         }
1335
1336         LyXFont basefont;
1337
1338         // Maybe we have to create a optional argument.
1339         pos_type main_body;
1340         if (style->labeltype != LABEL_MANUAL)
1341                 main_body = 0;
1342         else
1343                 main_body = beginningOfMainBody();
1344
1345         int column = 0;
1346
1347         if (main_body > 0) {
1348                 os << '[';
1349                 ++column;
1350                 basefont = getLabelFont(bparams);
1351         } else {
1352                 basefont = getLayoutFont(bparams);
1353         }
1354
1355         moving_arg |= style->needprotect;
1356
1357         // Which font is currently active?
1358         LyXFont running_font(basefont);
1359         // Do we have an open font change?
1360         bool open_font = false;
1361
1362         texrow.start(this, 0);
1363
1364         // if the paragraph is empty, the loop will not be entered at all
1365         if (empty()) {
1366                 if (style->isCommand()) {
1367                         os << '{';
1368                         ++column;
1369                 }
1370                 if (!asdefault)
1371                         column += startTeXParParams(bparams, os, moving_arg);
1372
1373         }
1374
1375         for (pos_type i = 0; i < size(); ++i) {
1376                 ++column;
1377                 // First char in paragraph or after label?
1378                 if (i == main_body) {
1379                         if (main_body > 0) {
1380                                 if (open_font) {
1381                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
1382                                         open_font = false;
1383                                 }
1384                                 basefont = getLayoutFont(bparams);
1385                                 running_font = basefont;
1386                                 os << ']';
1387                                 ++column;
1388                         }
1389                         if (style->isCommand()) {
1390                                 os << '{';
1391                                 ++column;
1392                         }
1393
1394                         if (!asdefault)
1395                                 column += startTeXParParams(bparams, os,
1396                                                             moving_arg);
1397                 }
1398
1399                 value_type c = getChar(i);
1400
1401                 // Fully instantiated font
1402                 LyXFont font = getFont(bparams, i);
1403
1404                 LyXFont const last_font = running_font;
1405
1406                 // Spaces at end of font change are simulated to be
1407                 // outside font change, i.e. we write "\textXX{text} "
1408                 // rather than "\textXX{text }". (Asger)
1409                 if (open_font && c == ' ' && i <= size() - 2) {
1410                         LyXFont const & next_font = getFont(bparams, i + 1);
1411                         if (next_font != running_font
1412                             && next_font != font) {
1413                                 font = next_font;
1414                         }
1415                 }
1416
1417                 // We end font definition before blanks
1418                 if (open_font &&
1419                     (font != running_font ||
1420                      font.language() != running_font.language()))
1421                 {
1422                         column += running_font.latexWriteEndChanges(os,
1423                                                                     basefont,
1424                                                                     (i == main_body-1) ? basefont : font);
1425                         running_font = basefont;
1426                         open_font = false;
1427                 }
1428
1429                 // Blanks are printed before start of fontswitch
1430                 if (c == ' ') {
1431                         // Do not print the separation of the optional argument
1432                         if (i != main_body - 1) {
1433                                 pimpl_->simpleTeXBlanks(os, texrow, i,
1434                                                        column, font, *style);
1435                         }
1436                 }
1437
1438                 // Do we need to change font?
1439                 if ((font != running_font ||
1440                      font.language() != running_font.language()) &&
1441                         i != main_body - 1)
1442                 {
1443                         column += font.latexWriteStartChanges(os, basefont,
1444                                                               last_font);
1445                         running_font = font;
1446                         open_font = true;
1447                 }
1448
1449                 if (c == Paragraph::META_NEWLINE) {
1450                         // newlines are handled differently here than
1451                         // the default in SimpleTeXSpecialChars().
1452                         if (!style->newline_allowed) {
1453                                 os << '\n';
1454                         } else {
1455                                 if (open_font) {
1456                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
1457                                         open_font = false;
1458                                 }
1459                                 basefont = getLayoutFont(bparams);
1460                                 running_font = basefont;
1461                                 if (font.family() ==
1462                                     LyXFont::TYPEWRITER_FAMILY) {
1463                                         os << '~';
1464                                 }
1465                                 if (moving_arg)
1466                                         os << "\\protect ";
1467
1468                                 os << "\\\\\n";
1469                         }
1470                         texrow.newline();
1471                         texrow.start(this, i + 1);
1472                         column = 0;
1473                 } else {
1474                         pimpl_->simpleTeXSpecialChars(buf, bparams,
1475                                                       os, texrow, moving_arg,
1476                                                       font, running_font,
1477                                                       basefont, open_font,
1478                                                       *style, i, column, c);
1479                 }
1480         }
1481
1482         // If we have an open font definition, we have to close it
1483         if (open_font) {
1484 #ifdef FIXED_LANGUAGE_END_DETECTION
1485                 if (next_) {
1486                         running_font
1487                                 .latexWriteEndChanges(os, basefont,
1488                                                       next_->getFont(bparams,
1489                                                       0));
1490                 } else {
1491                         running_font.latexWriteEndChanges(os, basefont,
1492                                                           basefont);
1493                 }
1494 #else
1495 #ifdef WITH_WARNINGS
1496 //#warning For now we ALWAYS have to close the foreign font settings if they are
1497 //#warning there as we start another \selectlanguage with the next paragraph if
1498 //#warning we are in need of this. This should be fixed sometime (Jug)
1499 #endif
1500                 running_font.latexWriteEndChanges(os, basefont,  basefont);
1501 #endif
1502         }
1503
1504         // Needed if there is an optional argument but no contents.
1505         if (main_body > 0 && main_body == size()) {
1506                 os << "]~";
1507                 return_value = false;
1508         }
1509
1510         if (!asdefault) {
1511                 column += endTeXParParams(bparams, os, moving_arg);
1512         }
1513
1514         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...done " << this << endl;
1515         return return_value;
1516 }
1517
1518
1519 Paragraph * Paragraph::TeXEnvironment(Buffer const * buf,
1520                                             BufferParams const & bparams,
1521                                             ostream & os, TexRow & texrow)
1522 {
1523         lyxerr[Debug::LATEX] << "TeXEnvironment...     " << this << endl;
1524
1525         LyXLayout_ptr const & style = layout();
1526
1527         Language const * language = getParLanguage(bparams);
1528         Language const * doc_language = bparams.language;
1529         Language const * previous_language = previous_
1530                 ? previous_->getParLanguage(bparams) : doc_language;
1531         if (language->babel() != previous_language->babel()) {
1532
1533                 if (!lyxrc.language_command_end.empty() &&
1534                     previous_language->babel() != doc_language->babel()) {
1535                         os << subst(lyxrc.language_command_end, "$$lang",
1536                                     previous_language->babel())
1537                            << endl;
1538                         texrow.newline();
1539                 }
1540
1541                 if (lyxrc.language_command_end.empty() ||
1542                     language->babel() != doc_language->babel()) {
1543                         os << subst(lyxrc.language_command_begin, "$$lang",
1544                                     language->babel())
1545                            << endl;
1546                         texrow.newline();
1547                 }
1548         }
1549
1550         bool leftindent_open = false;
1551         if (!params().leftIndent().zero()) {
1552                 os << "\\begin{LyXParagraphLeftIndent}{" <<
1553                         params().leftIndent().asLatexString() << "}\n";
1554                 texrow.newline();
1555                 leftindent_open = true;
1556         }
1557
1558         if (style->isEnvironment()) {
1559                 if (style->latextype == LATEX_LIST_ENVIRONMENT) {
1560                         os << "\\begin{" << style->latexname() << "}{"
1561                            << params().labelWidthString() << "}\n";
1562                 } else if (style->labeltype == LABEL_BIBLIO) {
1563                         // ale970405
1564                         os << "\\begin{" << style->latexname() << "}{"
1565                            <<  bibitemWidest(buf)
1566                            << "}\n";
1567                 } else if (style->latextype == LATEX_ITEM_ENVIRONMENT) {
1568                         os << "\\begin{" << style->latexname() << '}'
1569                            << style->latexparam() << '\n';
1570                 } else
1571                         os << "\\begin{" << style->latexname() << '}'
1572                            << style->latexparam() << '\n';
1573                 texrow.newline();
1574         }
1575         Paragraph * par = this;
1576         do {
1577                 par = par->TeXOnePar(buf, bparams, os, texrow, false);
1578
1579                 if (par && par->params().depth() > params().depth()) {
1580                             if (par->layout()->isParagraph()) {
1581
1582                             // Thinko!
1583                             // How to handle this? (Lgb)
1584                             //&& !suffixIs(os, "\n\n")
1585                                     //) {
1586                                 // There should be at least one '\n' already
1587                                 // but we need there to be two for Standard
1588                                 // paragraphs that are depth-increment'ed to be
1589                                 // output correctly.  However, tables can
1590                                 // also be paragraphs so don't adjust them.
1591                                 // ARRae
1592                                 // Thinkee:
1593                                 // Will it ever harm to have one '\n' too
1594                                 // many? i.e. that we sometimes will have
1595                                 // three in a row. (Lgb)
1596                                 os << '\n';
1597                                 texrow.newline();
1598                         }
1599                         par = par->pimpl_->TeXDeeper(buf, bparams, os, texrow);
1600                 }
1601         } while (par
1602                  && par->layout() == layout()
1603                  && par->params().depth() == params().depth()
1604                  && par->params().leftIndent() == params().leftIndent());
1605
1606         if (style->isEnvironment()) {
1607                 os << "\\end{" << style->latexname() << "}\n";
1608                 texrow.newline();
1609         }
1610
1611         if (leftindent_open) {
1612                 os << "\\end{LyXParagraphLeftIndent}\n";
1613                 texrow.newline();
1614         }
1615
1616         lyxerr[Debug::LATEX] << "TeXEnvironment...done " << par << endl;
1617         return par;  // ale970302
1618 }
1619
1620
1621 bool Paragraph::isHfill(pos_type pos) const
1622 {
1623         return IsHfillChar(getChar(pos));
1624 }
1625
1626
1627 bool Paragraph::isInset(pos_type pos) const
1628 {
1629         return IsInsetChar(getChar(pos));
1630 }
1631
1632
1633 bool Paragraph::isNewline(pos_type pos) const
1634 {
1635         return pos >= 0 && IsNewlineChar(getChar(pos));
1636 }
1637
1638
1639 bool Paragraph::isSeparator(pos_type pos) const
1640 {
1641         return IsSeparatorChar(getChar(pos));
1642 }
1643
1644
1645 bool Paragraph::isLineSeparator(pos_type pos) const
1646 {
1647         value_type const c = getChar(pos);
1648         return IsLineSeparatorChar(c)
1649                 || (IsInsetChar(c) && getInset(pos) &&
1650                 getInset(pos)->isLineSeparator());
1651 }
1652
1653
1654 bool Paragraph::isKomma(pos_type pos) const
1655 {
1656         return IsKommaChar(getChar(pos));
1657 }
1658
1659
1660 /// Used by the spellchecker
1661 bool Paragraph::isLetter(pos_type pos) const
1662 {
1663         value_type const c = getChar(pos);
1664         if (IsLetterChar(c))
1665                 return true;
1666         if (isInset(pos))
1667                 return getInset(pos)->isLetter();
1668         // We want to pass the ' and escape chars to ispell
1669         string const extra = lyxrc.isp_esc_chars + '\'';
1670         return contains(extra, c);
1671 }
1672
1673
1674 bool Paragraph::isWord(pos_type pos) const
1675 {
1676         return IsWordChar(getChar(pos)) ;
1677 }
1678
1679
1680 Language const *
1681 Paragraph::getParLanguage(BufferParams const & bparams) const
1682 {
1683         if (!empty()) {
1684                 return getFirstFontSettings().language();
1685         } else if (previous_)
1686                 return previous_->getParLanguage(bparams);
1687         else
1688                 return bparams.language;
1689 }
1690
1691
1692 bool Paragraph::isRightToLeftPar(BufferParams const & bparams) const
1693 {
1694         return lyxrc.rtl_support
1695                 && getParLanguage(bparams)->RightToLeft()
1696                 && !(inInset() && inInset()->owner() &&
1697                      inInset()->owner()->lyxCode() == Inset::ERT_CODE);
1698 }
1699
1700
1701 void Paragraph::changeLanguage(BufferParams const & bparams,
1702                                   Language const * from, Language const * to)
1703 {
1704         for (pos_type i = 0; i < size(); ++i) {
1705                 LyXFont font = getFontSettings(bparams, i);
1706                 if (font.language() == from) {
1707                         font.setLanguage(to);
1708                         setFont(i, font);
1709                 }
1710         }
1711 }
1712
1713
1714 bool Paragraph::isMultiLingual(BufferParams const & bparams)
1715 {
1716         Language const * doc_language = bparams.language;
1717         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
1718         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
1719
1720         for (; cit != end; ++cit)
1721                 if (cit->font().language() != ignore_language &&
1722                     cit->font().language() != latex_language &&
1723                         cit->font().language() != doc_language)
1724                         return true;
1725         return false;
1726 }
1727
1728
1729 // Convert the paragraph to a string.
1730 // Used for building the table of contents
1731 string const Paragraph::asString(Buffer const * buffer, bool label) const
1732 {
1733         BufferParams const & bparams = buffer->params;
1734         string s;
1735         if (label && !params().labelString().empty())
1736                 s += params().labelString() + ' ';
1737         string::size_type const len = s.size();
1738
1739         for (pos_type i = 0; i < size(); ++i) {
1740                 value_type c = getChar(i);
1741                 if (IsPrintable(c))
1742                         s += c;
1743                 else if (c == META_INSET &&
1744                          getInset(i)->lyxCode() == Inset::MATH_CODE) {
1745                         ostringstream ost;
1746                         getInset(i)->ascii(buffer, ost);
1747                         s += subst(STRCONV(ost.str()),'\n',' ');
1748                 }
1749         }
1750
1751         if (isRightToLeftPar(bparams))
1752                 reverse(s.begin() + len,s.end());
1753
1754         return s;
1755 }
1756
1757
1758 string const Paragraph::asString(Buffer const * buffer,
1759                                  pos_type beg, pos_type end, bool label) const
1760 {
1761         ostringstream ost;
1762
1763         if (beg == 0 && label && !params().labelString().empty())
1764                 ost << params().labelString() << ' ';
1765
1766         for (pos_type i = beg; i < end; ++i) {
1767                 value_type const c = getUChar(buffer->params, i);
1768                 if (IsPrintable(c))
1769                         ost << c;
1770                 else if (c == META_NEWLINE)
1771                         ost << '\n';
1772                 else if (c == META_HFILL)
1773                         ost << '\t';
1774                 else if (c == META_INSET) {
1775                         getInset(i)->ascii(buffer, ost);
1776                 }
1777         }
1778
1779         return STRCONV(ost.str());
1780 }
1781
1782
1783 void Paragraph::setInsetOwner(Inset * i)
1784 {
1785         pimpl_->inset_owner = i;
1786         InsetList::iterator it = insetlist.begin();
1787         InsetList::iterator end = insetlist.end();
1788         for (; it != end; ++it) {
1789                 if (it.getInset())
1790                         it.getInset()->setOwner(i);
1791         }
1792 }
1793
1794
1795 void Paragraph::deleteInsetsLyXText(BufferView * bv)
1796 {
1797         // then the insets
1798         insetlist.deleteInsetsLyXText(bv);
1799 }
1800
1801
1802 void Paragraph::resizeInsetsLyXText(BufferView * bv)
1803 {
1804         // then the insets
1805         insetlist.resizeInsetsLyXText(bv);
1806 }
1807
1808
1809 void Paragraph::setContentsFromPar(Paragraph * par)
1810 {
1811         pimpl_->setContentsFromPar(par);
1812 }
1813
1814
1815 lyx::pos_type Paragraph::size() const
1816 {
1817         return pimpl_->size();
1818 }
1819
1820
1821 bool Paragraph::empty() const
1822 {
1823         return pimpl_->empty();
1824 }
1825
1826
1827 Paragraph::value_type Paragraph::getChar(pos_type pos) const
1828 {
1829         return pimpl_->getChar(pos);
1830 }
1831
1832
1833 int Paragraph::id() const
1834 {
1835         return pimpl_->id_;
1836 }
1837
1838
1839 LyXLayout_ptr const & Paragraph::layout() const
1840 {
1841         return layout_;
1842 }
1843
1844
1845 void Paragraph::layout(LyXLayout_ptr const & new_layout)
1846 {
1847         layout_ = new_layout;
1848 }
1849
1850
1851 bool Paragraph::isFirstInSequence() const
1852 {
1853         Paragraph const * dhook = depthHook(getDepth());
1854         return (dhook == this
1855                 || dhook->layout() != layout()
1856                 || dhook->getDepth() != getDepth());
1857 }
1858
1859
1860 Inset * Paragraph::inInset() const
1861 {
1862         return pimpl_->inset_owner;
1863 }
1864
1865
1866 void Paragraph::clearContents()
1867 {
1868         pimpl_->clear();
1869 }
1870
1871 void Paragraph::setChar(pos_type pos, value_type c)
1872 {
1873         pimpl_->setChar(pos, c);
1874 }
1875
1876
1877 ParagraphParameters & Paragraph::params()
1878 {
1879         return pimpl_->params;
1880 }
1881
1882
1883 ParagraphParameters const & Paragraph::params() const
1884 {
1885         return pimpl_->params;
1886 }
1887
1888
1889 Paragraph * Paragraph::getParFromID(int id) const
1890 {
1891         return pimpl_->getParFromID(id);
1892 }
1893
1894
1895 bool Paragraph::isFreeSpacing() const
1896 {
1897         // for now we just need this, later should we need this in some
1898         // other way we can always add a function to Inset::() too.
1899         if (pimpl_->inset_owner && pimpl_->inset_owner->owner())
1900                 return (pimpl_->inset_owner->owner()->lyxCode() == Inset::ERT_CODE);
1901         return false;
1902 }