src/paragraph.C

   1 /**
   2  * \file paragraph.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Asger Alstrup
   7  * \author Lars Gullik Bjønnes
   8  * \author Jean-Marc Lasgouttes
   9  * \author Angus Leeming
  10  * \author John Levon
  11  * \author André Pönitz
  12  * \author Dekel Tsur
  13  * \author Jürgen Vigna
  14  *
  15  * Full author contact details are available in file CREDITS.
  16  */
  17
  18 #include <config.h>
  19
  20 #include "paragraph.h"
  21 #include "paragraph_pimpl.h"
  22
  23 #include "buffer.h"
  24 #include "bufferparams.h"
  25 #include "counters.h"
  26 #include "encoding.h"
  27 #include "debug.h"
  28 #include "gettext.h"
  29 #include "language.h"
  30 #include "LaTeXFeatures.h"
  31 #include "lyxfont.h"
  32 #include "lyxrc.h"
  33 #include "lyxrow.h"
  34 #include "messages.h"
  35 #include "outputparams.h"
  36 #include "paragraph_funcs.h"
  37
  38 #include "rowpainter.h"
  39
  40 #include "sgml.h"
  41 #include "texrow.h"
  42 #include "vspace.h"
  43
  44 #include "frontends/FontMetrics.h"
  45
  46 #include "insets/insetbibitem.h"
  47 #include "insets/insetoptarg.h"
  48
  49 #include "support/lstrings.h"
  50 #include "support/textutils.h"
  51 #include "support/convert.h"
  52 #include "support/unicode.h"
  53
  54 #include <boost/bind.hpp>
  55
  56 #include <algorithm>
  57 #include <list>
  58 #include <stack>
  59 #include <sstream>
  60
  61 using std::distance;
  62 using std::endl;
  63 using std::list;
  64 using std::stack;
  65 using std::string;
  66 using std::ostream;
  67 using std::ostringstream;
  68
  69 namespace lyx {
  70
  71 using support::contains;
  72 using support::rsplit;
  73 using support::subst;
  74
  75 Paragraph::Paragraph()
  76         : begin_of_body_(0), pimpl_(new Paragraph::Pimpl(this))
  77 {
  78         itemdepth = 0;
  79         params().clear();
  80 }
  81
  82
  83 Paragraph::Paragraph(Paragraph const & par)
  84         : itemdepth(par.itemdepth), insetlist(par.insetlist),
  85         layout_(par.layout_),
  86         text_(par.text_), begin_of_body_(par.begin_of_body_),
  87         pimpl_(new Paragraph::Pimpl(*par.pimpl_, this))
  88 {
  89         //lyxerr << "Paragraph::Paragraph(Paragraph const&)" << endl;
  90         InsetList::iterator it = insetlist.begin();
  91         InsetList::iterator end = insetlist.end();
  92         for (; it != end; ++it)
  93                 it->inset = it->inset->clone().release();
  94 }
  95
  96
  97 Paragraph & Paragraph::operator=(Paragraph const & par)
  98 {
  99         // needed as we will destroy the pimpl_ before copying it
 100         if (&par != this) {
 101                 itemdepth = par.itemdepth;
 102
 103                 insetlist = par.insetlist;
 104                 InsetList::iterator it = insetlist.begin();
 105                 InsetList::iterator end = insetlist.end();
 106                 for (; it != end; ++it)
 107                         it->inset = it->inset->clone().release();
 108
 109                 layout_ = par.layout();
 110                 text_ = par.text_;
 111                 begin_of_body_ = par.begin_of_body_;
 112
 113                 delete pimpl_;
 114                 pimpl_ = new Pimpl(*par.pimpl_, this);
 115         }
 116         return *this;
 117 }
 118
 119
 120 Paragraph::~Paragraph()
 121 {
 122         delete pimpl_;
 123         //
 124         //lyxerr << "Paragraph::paragraph_id = "
 125         //       << Paragraph::paragraph_id << endl;
 126 }
 127
 128
 129 void Paragraph::write(Buffer const & buf, ostream & os,
 130                           BufferParams const & bparams,
 131                           depth_type & dth) const
 132 {
 133         // The beginning or end of a deeper (i.e. nested) area?
 134         if (dth != params().depth()) {
 135                 if (params().depth() > dth) {
 136                         while (params().depth() > dth) {
 137                                 os << "\n\\begin_deeper";
 138                                 ++dth;
 139                         }
 140                 } else {
 141                         while (params().depth() < dth) {
 142                                 os << "\n\\end_deeper";
 143                                 --dth;
 144                         }
 145                 }
 146         }
 147
 148         // First write the layout
 149         os << "\n\\begin_layout " << layout()->name() << '\n';
 150
 151         params().write(os);
 152
 153         LyXFont font1(LyXFont::ALL_INHERIT, bparams.language);
 154
 155         Change running_change = Change(Change::UNCHANGED);
 156
 157         int column = 0;
 158         for (pos_type i = 0; i <= size(); ++i) {
 159
 160                 Change change = pimpl_->lookupChange(i);
 161                 Changes::lyxMarkChange(os, column, running_change, change);
 162                 running_change = change;
 163
 164                 if (i == size())
 165                         break;
 166
 167                 // Write font changes
 168                 LyXFont font2 = getFontSettings(bparams, i);
 169                 if (font2 != font1) {
 170                         font2.lyxWriteChanges(font1, os);
 171                         column = 0;
 172                         font1 = font2;
 173                 }
 174
 175                 value_type const c = getChar(i);
 176                 switch (c) {
 177                 case META_INSET:
 178                 {
 179                         InsetBase const * inset = getInset(i);
 180                         if (inset)
 181                                 if (inset->directWrite()) {
 182                                         // international char, let it write
 183                                         // code directly so it's shorter in
 184                                         // the file
 185                                         inset->write(buf, os);
 186                                 } else {
 187                                         if (i)
 188                                                 os << '\n';
 189                                         os << "\\begin_inset ";
 190                                         inset->write(buf, os);
 191                                         os << "\n\\end_inset\n\n";
 192                                         column = 0;
 193                                 }
 194                 }
 195                 break;
 196                 case '\\':
 197                         os << "\n\\backslash\n";
 198                         column = 0;
 199                         break;
 200                 case '.':
 201                         if (i + 1 < size() && getChar(i + 1) == ' ') {
 202                                 os << ".\n";
 203                                 column = 0;
 204                         } else
 205                                 os << '.';
 206                         break;
 207                 default:
 208                         if ((column > 70 && c == ' ')
 209                             || column > 79) {
 210                                 os << '\n';
 211                                 column = 0;
 212                         }
 213                         // this check is to amend a bug. LyX sometimes
 214                         // inserts '\0' this could cause problems.
 215                         if (c != '\0') {
 216                                 std::vector<char> tmp = ucs4_to_utf8(c);
 217                                 tmp.push_back('\0');
 218                                 os << &tmp[0];
 219                         } else
 220                                 lyxerr << "ERROR (Paragraph::writeFile):"
 221                                         " NULL char in structure." << endl;
 222                         ++column;
 223                         break;
 224                 }
 225         }
 226
 227         os << "\n\\end_layout\n";
 228 }
 229
 230
 231 void Paragraph::validate(LaTeXFeatures & features) const
 232 {
 233         pimpl_->validate(features, *layout());
 234 }
 235
 236
 237 bool Paragraph::eraseChar(pos_type pos, bool trackChanges)
 238 {
 239         return pimpl_->eraseChar(pos, trackChanges);
 240 }
 241
 242
 243 int Paragraph::eraseChars(pos_type start, pos_type end, bool trackChanges)
 244 {
 245         return pimpl_->eraseChars(start, end, trackChanges);
 246 }
 247
 248
 249 void Paragraph::insert(pos_type start, docstring const & str,
 250                        LyXFont const & font, Change const & change)
 251 {
 252         for (size_t i = 0, n = str.size(); i != n ; ++i)
 253                 insertChar(start + i, str[i], font, change);
 254 }
 255
 256
 257 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 258                            bool trackChanges)
 259 {
 260         pimpl_->insertChar(pos, c, Change(trackChanges ?
 261                            Change::INSERTED : Change::UNCHANGED));
 262 }
 263
 264
 265 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 266                            LyXFont const & font, bool trackChanges)
 267 {
 268         pimpl_->insertChar(pos, c, Change(trackChanges ?
 269                            Change::INSERTED : Change::UNCHANGED));
 270         setFont(pos, font);
 271 }
 272
 273
 274 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 275                            LyXFont const & font, Change const & change)
 276 {
 277         pimpl_->insertChar(pos, c, change);
 278         setFont(pos, font);
 279 }
 280
 281
 282 void Paragraph::insertInset(pos_type pos, InsetBase * inset,
 283                             Change const & change)
 284 {
 285         pimpl_->insertInset(pos, inset, change);
 286 }
 287
 288
 289 void Paragraph::insertInset(pos_type pos, InsetBase * inset,
 290                             LyXFont const & font, Change const & change)
 291 {
 292         pimpl_->insertInset(pos, inset, change);
 293         setFont(pos, font);
 294 }
 295
 296
 297 bool Paragraph::insetAllowed(InsetBase_code code)
 298 {
 299         return !pimpl_->inset_owner || pimpl_->inset_owner->insetAllowed(code);
 300 }
 301
 302
 303 // Gets uninstantiated font setting at position.
 304 LyXFont const Paragraph::getFontSettings(BufferParams const & bparams,
 305                                          pos_type pos) const
 306 {
 307         if (pos > size()) {
 308                 lyxerr << " pos: " << pos << " size: " << size() << endl;
 309                 BOOST_ASSERT(pos <= size());
 310         }
 311
 312         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 313         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 314         for (; cit != end; ++cit)
 315                 if (cit->pos() >= pos)
 316                         break;
 317
 318         if (cit != end)
 319                 return cit->font();
 320
 321         if (pos == size() && !empty())
 322                 return getFontSettings(bparams, pos - 1);
 323
 324         return LyXFont(LyXFont::ALL_INHERIT, getParLanguage(bparams));
 325 }
 326
 327
 328 FontSpan Paragraph::fontSpan(pos_type pos) const
 329 {
 330         BOOST_ASSERT(pos <= size());
 331         pos_type start = 0;
 332
 333         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 334         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 335         for (; cit != end; ++cit) {
 336                 if (cit->pos() >= pos) {
 337                         if (pos >= beginOfBody())
 338                                 return FontSpan(std::max(start, beginOfBody()),
 339                                                 cit->pos());
 340                         else
 341                                 return FontSpan(start,
 342                                                 std::min(beginOfBody() - 1,
 343                                                          cit->pos()));
 344                 }
 345                 start = cit->pos() + 1;
 346         }
 347
 348         // This should not happen, but if so, we take no chances.
 349         //lyxerr << "Paragraph::getEndPosOfFontSpan: This should not happen!"
 350         //      << endl;
 351         return FontSpan(pos, pos);
 352 }
 353
 354
 355 // Gets uninstantiated font setting at position 0
 356 LyXFont const Paragraph::getFirstFontSettings(BufferParams const & bparams) const
 357 {
 358         if (!empty() && !pimpl_->fontlist.empty())
 359                 return pimpl_->fontlist[0].font();
 360
 361         return LyXFont(LyXFont::ALL_INHERIT, bparams.language);
 362 }
 363
 364
 365 // Gets the fully instantiated font at a given position in a paragraph
 366 // This is basically the same function as LyXText::GetFont() in text2.C.
 367 // The difference is that this one is used for generating the LaTeX file,
 368 // and thus cosmetic "improvements" are disallowed: This has to deliver
 369 // the true picture of the buffer. (Asger)
 370 LyXFont const Paragraph::getFont(BufferParams const & bparams, pos_type pos,
 371                                  LyXFont const & outerfont) const
 372 {
 373         BOOST_ASSERT(pos >= 0);
 374
 375         LyXLayout_ptr const & lout = layout();
 376
 377         pos_type const body_pos = beginOfBody();
 378
 379         LyXFont layoutfont;
 380         if (pos < body_pos)
 381                 layoutfont = lout->labelfont;
 382         else
 383                 layoutfont = lout->font;
 384
 385         LyXFont font = getFontSettings(bparams, pos);
 386         font.realize(layoutfont);
 387         font.realize(outerfont);
 388         font.realize(bparams.getFont());
 389
 390         return font;
 391 }
 392
 393
 394 LyXFont const Paragraph::getLabelFont
 395         (BufferParams const & bparams, LyXFont const & outerfont) const
 396 {
 397         LyXFont tmpfont = layout()->labelfont;
 398         tmpfont.setLanguage(getParLanguage(bparams));
 399         tmpfont.realize(outerfont);
 400         tmpfont.realize(bparams.getFont());
 401         return tmpfont;
 402 }
 403
 404
 405 LyXFont const Paragraph::getLayoutFont
 406         (BufferParams const & bparams, LyXFont const & outerfont) const
 407 {
 408         LyXFont tmpfont = layout()->font;
 409         tmpfont.setLanguage(getParLanguage(bparams));
 410         tmpfont.realize(outerfont);
 411         tmpfont.realize(bparams.getFont());
 412         return tmpfont;
 413 }
 414
 415
 416 /// Returns the height of the highest font in range
 417 LyXFont_size Paragraph::highestFontInRange
 418         (pos_type startpos, pos_type endpos, LyXFont_size def_size) const
 419 {
 420         if (pimpl_->fontlist.empty())
 421                 return def_size;
 422
 423         Pimpl::FontList::const_iterator end_it = pimpl_->fontlist.begin();
 424         Pimpl::FontList::const_iterator const end = pimpl_->fontlist.end();
 425         for (; end_it != end; ++end_it) {
 426                 if (end_it->pos() >= endpos)
 427                         break;
 428         }
 429
 430         if (end_it != end)
 431                 ++end_it;
 432
 433         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 434         for (; cit != end; ++cit) {
 435                 if (cit->pos() >= startpos)
 436                         break;
 437         }
 438
 439         LyXFont::FONT_SIZE maxsize = LyXFont::SIZE_TINY;
 440         for (; cit != end_it; ++cit) {
 441                 LyXFont::FONT_SIZE size = cit->font().size();
 442                 if (size == LyXFont::INHERIT_SIZE)
 443                         size = def_size;
 444                 if (size > maxsize && size <= LyXFont::SIZE_HUGER)
 445                         maxsize = size;
 446         }
 447         return maxsize;
 448 }
 449
 450
 451 Paragraph::value_type
 452 Paragraph::getUChar(BufferParams const & bparams, pos_type pos) const
 453 {
 454         value_type c = getChar(pos);
 455         if (!lyxrc.rtl_support)
 456                 return c;
 457
 458         value_type uc = c;
 459         switch (c) {
 460         case '(':
 461                 uc = ')';
 462                 break;
 463         case ')':
 464                 uc = '(';
 465                 break;
 466         case '[':
 467                 uc = ']';
 468                 break;
 469         case ']':
 470                 uc = '[';
 471                 break;
 472         case '{':
 473                 uc = '}';
 474                 break;
 475         case '}':
 476                 uc = '{';
 477                 break;
 478         case '<':
 479                 uc = '>';
 480                 break;
 481         case '>':
 482                 uc = '<';
 483                 break;
 484         }
 485         if (uc != c && getFontSettings(bparams, pos).isRightToLeft())
 486                 return uc;
 487         else
 488                 return c;
 489 }
 490
 491
 492 void Paragraph::setFont(pos_type pos, LyXFont const & font)
 493 {
 494         BOOST_ASSERT(pos <= size());
 495
 496         // First, reduce font against layout/label font
 497         // Update: The setCharFont() routine in text2.C already
 498         // reduces font, so we don't need to do that here. (Asger)
 499         // No need to simplify this because it will disappear
 500         // in a new kernel. (Asger)
 501         // Next search font table
 502
 503         Pimpl::FontList::iterator beg = pimpl_->fontlist.begin();
 504         Pimpl::FontList::iterator it = beg;
 505         Pimpl::FontList::iterator endit = pimpl_->fontlist.end();
 506         for (; it != endit; ++it) {
 507                 if (it->pos() >= pos)
 508                         break;
 509         }
 510         size_t const i = distance(beg, it);
 511         bool notfound = (it == endit);
 512
 513         if (!notfound && pimpl_->fontlist[i].font() == font)
 514                 return;
 515
 516         bool begin = pos == 0 || notfound ||
 517                 (i > 0 && pimpl_->fontlist[i - 1].pos() == pos - 1);
 518         // Is position pos is a beginning of a font block?
 519         bool end = !notfound && pimpl_->fontlist[i].pos() == pos;
 520         // Is position pos is the end of a font block?
 521         if (begin && end) { // A single char block
 522                 if (i + 1 < pimpl_->fontlist.size() &&
 523                     pimpl_->fontlist[i + 1].font() == font) {
 524                         // Merge the singleton block with the next block
 525                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 526                         if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 527                                 pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i - 1);
 528                 } else if (i > 0 && pimpl_->fontlist[i - 1].font() == font) {
 529                         // Merge the singleton block with the previous block
 530                         pimpl_->fontlist[i - 1].pos(pos);
 531                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 532                 } else
 533                         pimpl_->fontlist[i].font(font);
 534         } else if (begin) {
 535                 if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 536                         pimpl_->fontlist[i - 1].pos(pos);
 537                 else
 538                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 539                                         Pimpl::FontTable(pos, font));
 540         } else if (end) {
 541                 pimpl_->fontlist[i].pos(pos - 1);
 542                 if (!(i + 1 < pimpl_->fontlist.size() &&
 543                       pimpl_->fontlist[i + 1].font() == font))
 544                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 545                                         Pimpl::FontTable(pos, font));
 546         } else { // The general case. The block is splitted into 3 blocks
 547                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 548                                 Pimpl::FontTable(pos - 1, pimpl_->fontlist[i].font()));
 549                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 550                                 Pimpl::FontTable(pos, font));
 551         }
 552 }
 553
 554
 555 void Paragraph::makeSameLayout(Paragraph const & par)
 556 {
 557         layout(par.layout());
 558         // move to pimpl?
 559         params() = par.params();
 560 }
 561
 562
 563 bool Paragraph::stripLeadingSpaces(bool trackChanges)
 564 {
 565         if (isFreeSpacing())
 566                 return false;
 567
 568         int pos = 0;
 569         int count = 0;
 570
 571         while (pos < size() && (isNewline(pos) || isLineSeparator(pos))) {
 572                 if (eraseChar(pos, trackChanges))
 573                         ++count;
 574                 else
 575                         ++pos;
 576         }
 577
 578         return count > 0 || pos > 0;
 579 }
 580
 581
 582 bool Paragraph::hasSameLayout(Paragraph const & par) const
 583 {
 584         return par.layout() == layout() && params().sameLayout(par.params());
 585 }
 586
 587
 588 depth_type Paragraph::getDepth() const
 589 {
 590         return params().depth();
 591 }
 592
 593
 594 depth_type Paragraph::getMaxDepthAfter() const
 595 {
 596         if (layout()->isEnvironment())
 597                 return params().depth() + 1;
 598         else
 599                 return params().depth();
 600 }
 601
 602
 603 char Paragraph::getAlign() const
 604 {
 605         if (params().align() == LYX_ALIGN_LAYOUT)
 606                 return layout()->align;
 607         else
 608                 return params().align();
 609 }
 610
 611
 612 docstring const & Paragraph::getLabelstring() const
 613 {
 614         return params().labelString();
 615 }
 616
 617
 618 // the next two functions are for the manual labels
 619 docstring const Paragraph::getLabelWidthString() const
 620 {
 621         if (!params().labelWidthString().empty())
 622                 return params().labelWidthString();
 623         else
 624                 return _("Senseless with this layout!");
 625 }
 626
 627
 628 void Paragraph::setLabelWidthString(docstring const & s)
 629 {
 630         params().labelWidthString(s);
 631 }
 632
 633
 634 docstring const Paragraph::translateIfPossible(docstring const & s,
 635                 BufferParams const & bparams) const
 636 {
 637         if (!support::isAscii(s) || s.empty()) {
 638                 // This must be a user defined layout. We cannot translate
 639                 // this, since gettext accepts only ascii keys.
 640                 return s;
 641         }
 642         // Probably standard layout, try to translate
 643         Messages & m = getMessages(getParLanguage(bparams)->code());
 644         return m.get(to_ascii(s));
 645 }
 646
 647
 648 docstring Paragraph::expandLabel(LyXLayout_ptr const & layout,
 649                 BufferParams const & bparams, bool process_appendix) const
 650 {
 651         LyXTextClass const & tclass = bparams.getLyXTextClass();
 652
 653         docstring fmt;
 654         if (process_appendix && params().appendix())
 655                 fmt = translateIfPossible(layout->labelstring_appendix(),
 656                         bparams);
 657         else
 658                 fmt = translateIfPossible(layout->labelstring(), bparams);
 659
 660         // handle 'inherited level parts' in 'fmt',
 661         // i.e. the stuff between '@' in   '@Section@.\arabic{subsection}'
 662         size_t const i = fmt.find('@', 0);
 663         if (i != docstring::npos) {
 664                 size_t const j = fmt.find('@', i + 1);
 665                 if (j != docstring::npos) {
 666                         docstring parent(fmt, i + 1, j - i - 1);
 667                         // FIXME UNICODE
 668                         docstring label = expandLabel(tclass[to_utf8(parent)], bparams);
 669                         fmt = docstring(fmt, 0, i) + label + docstring(fmt, j + 1, docstring::npos);
 670                 }
 671         }
 672
 673         return tclass.counters().counterLabel(fmt);
 674 }
 675
 676
 677 void Paragraph::applyLayout(LyXLayout_ptr const & new_layout)
 678 {
 679         layout(new_layout);
 680         params().labelWidthString(docstring());
 681         params().align(LYX_ALIGN_LAYOUT);
 682         params().spacing(Spacing(Spacing::Default));
 683 }
 684
 685
 686 pos_type Paragraph::beginOfBody() const
 687 {
 688         return begin_of_body_;
 689 }
 690
 691
 692 void Paragraph::setBeginOfBody()
 693 {
 694         if (layout()->labeltype != LABEL_MANUAL) {
 695                 begin_of_body_ = 0;
 696                 return;
 697         }
 698
 699         // Unroll the first two cycles of the loop
 700         // and remember the previous character to
 701         // remove unnecessary getChar() calls
 702         pos_type i = 0;
 703         pos_type end = size();
 704         if (i < end && !isNewline(i)) {
 705                 ++i;
 706                 char_type previous_char = 0;
 707                 char_type temp = 0;
 708                 if (i < end) {
 709                         previous_char = text_[i];
 710                         if (!isNewline(i)) {
 711                                 ++i;
 712                                 while (i < end && previous_char != ' ') {
 713                                         temp = text_[i];
 714                                         if (isNewline(i))
 715                                                 break;
 716                                         ++i;
 717                                         previous_char = temp;
 718                                 }
 719                         }
 720                 }
 721         }
 722
 723         begin_of_body_ = i;
 724 }
 725
 726
 727 // returns -1 if inset not found
 728 int Paragraph::getPositionOfInset(InsetBase const * inset) const
 729 {
 730         // Find the entry.
 731         InsetList::const_iterator it = insetlist.begin();
 732         InsetList::const_iterator end = insetlist.end();
 733         for (; it != end; ++it)
 734                 if (it->inset == inset)
 735                         return it->pos;
 736         return -1;
 737 }
 738
 739
 740 InsetBibitem * Paragraph::bibitem() const
 741 {
 742         if (!insetlist.empty()) {
 743                 InsetBase * inset = insetlist.begin()->inset;
 744                 if (inset->lyxCode() == InsetBase::BIBITEM_CODE)
 745                         return static_cast<InsetBibitem *>(inset);
 746         }
 747         return 0;
 748 }
 749
 750
 751 bool Paragraph::forceDefaultParagraphs() const
 752 {
 753         return inInset() && inInset()->forceDefaultParagraphs(0);
 754 }
 755
 756
 757 namespace {
 758
 759 // paragraphs inside floats need different alignment tags to avoid
 760 // unwanted space
 761
 762 bool noTrivlistCentering(InsetBase::Code code)
 763 {
 764         return code == InsetBase::FLOAT_CODE || code == InsetBase::WRAP_CODE;
 765 }
 766
 767
 768 string correction(string const & orig)
 769 {
 770         if (orig == "flushleft")
 771                 return "raggedright";
 772         if (orig == "flushright")
 773                 return "raggedleft";
 774         if (orig == "center")
 775                 return "centering";
 776         return orig;
 777 }
 778
 779
 780 string const corrected_env(string const & suffix, string const & env,
 781         InsetBase::Code code)
 782 {
 783         string output = suffix + "{";
 784         if (noTrivlistCentering(code))
 785                 output += correction(env);
 786         else
 787                 output += env;
 788         output += "}";
 789         if (suffix == "\\begin")
 790                 output += "\n";
 791         return output;
 792 }
 793
 794
 795 void adjust_row_column(string const & str, TexRow & texrow, int & column)
 796 {
 797         if (!contains(str, "\n"))
 798                 column += str.size();
 799         else {
 800                 string tmp;
 801                 texrow.newline();
 802                 column = rsplit(str, tmp, '\n').size();
 803         }
 804 }
 805
 806 } // namespace anon
 807
 808
 809 // This could go to ParagraphParameters if we want to
 810 int Paragraph::startTeXParParams(BufferParams const & bparams,
 811                                  odocstream & os, TexRow & texrow,
 812                                  bool moving_arg) const
 813 {
 814         int column = 0;
 815
 816         if (params().noindent()) {
 817                 os << "\\noindent ";
 818                 column += 10;
 819         }
 820
 821         switch (params().align()) {
 822         case LYX_ALIGN_NONE:
 823         case LYX_ALIGN_BLOCK:
 824         case LYX_ALIGN_LAYOUT:
 825         case LYX_ALIGN_SPECIAL:
 826                 break;
 827         case LYX_ALIGN_LEFT:
 828         case LYX_ALIGN_RIGHT:
 829         case LYX_ALIGN_CENTER:
 830                 if (moving_arg) {
 831                         os << "\\protect";
 832                         column += 8;
 833                 }
 834                 break;
 835         }
 836
 837         switch (params().align()) {
 838         case LYX_ALIGN_NONE:
 839         case LYX_ALIGN_BLOCK:
 840         case LYX_ALIGN_LAYOUT:
 841         case LYX_ALIGN_SPECIAL:
 842                 break;
 843         case LYX_ALIGN_LEFT: {
 844                 string output;
 845                 if (getParLanguage(bparams)->babel() != "hebrew")
 846                         output = corrected_env("\\begin", "flushleft", ownerCode());
 847                 else
 848                         output = corrected_env("\\begin", "flushright", ownerCode());
 849                 os << from_ascii(output);
 850                 adjust_row_column(output, texrow, column);
 851                 break;
 852         } case LYX_ALIGN_RIGHT: {
 853                 string output;
 854                 if (getParLanguage(bparams)->babel() != "hebrew")
 855                         output = corrected_env("\\begin", "flushright", ownerCode());
 856                 else
 857                         output = corrected_env("\\begin", "flushleft", ownerCode());
 858                 os << from_ascii(output);
 859                 adjust_row_column(output, texrow, column);
 860                 break;
 861         } case LYX_ALIGN_CENTER: {
 862                 string output;
 863                 output = corrected_env("\\begin", "center", ownerCode());
 864                 os << from_ascii(output);
 865                 adjust_row_column(output, texrow, column);
 866                 break;
 867         }
 868         }
 869
 870         return column;
 871 }
 872
 873
 874 // This could go to ParagraphParameters if we want to
 875 int Paragraph::endTeXParParams(BufferParams const & bparams,
 876                                odocstream & os, TexRow & texrow,
 877                                bool moving_arg) const
 878 {
 879         int column = 0;
 880
 881         switch (params().align()) {
 882         case LYX_ALIGN_NONE:
 883         case LYX_ALIGN_BLOCK:
 884         case LYX_ALIGN_LAYOUT:
 885         case LYX_ALIGN_SPECIAL:
 886                 break;
 887         case LYX_ALIGN_LEFT:
 888         case LYX_ALIGN_RIGHT:
 889         case LYX_ALIGN_CENTER:
 890                 if (moving_arg) {
 891                         os << "\\protect";
 892                         column = 8;
 893                 }
 894                 break;
 895         }
 896
 897         switch (params().align()) {
 898         case LYX_ALIGN_NONE:
 899         case LYX_ALIGN_BLOCK:
 900         case LYX_ALIGN_LAYOUT:
 901         case LYX_ALIGN_SPECIAL:
 902                 break;
 903         case LYX_ALIGN_LEFT: {
 904                 string output;
 905                 if (getParLanguage(bparams)->babel() != "hebrew")
 906                         output = corrected_env("\n\\par\\end", "flushleft", ownerCode());
 907                 else
 908                         output = corrected_env("\n\\par\\end", "flushright", ownerCode());
 909                 os << from_ascii(output);
 910                 adjust_row_column(output, texrow, column);
 911                 break;
 912         } case LYX_ALIGN_RIGHT: {
 913                 string output;
 914                 if (getParLanguage(bparams)->babel() != "hebrew")
 915                         output = corrected_env("\n\\par\\end", "flushright", ownerCode());
 916                 else
 917                         output = corrected_env("\n\\par\\end", "flushleft", ownerCode());
 918                 os << from_ascii(output);
 919                 adjust_row_column(output, texrow, column);
 920                 break;
 921         } case LYX_ALIGN_CENTER: {
 922                 string output;
 923                 output = corrected_env("\n\\par\\end", "center", ownerCode());
 924                 os << from_ascii(output);
 925                 adjust_row_column(output, texrow, column);
 926                 break;
 927         }
 928         }
 929
 930         return column;
 931 }
 932
 933
 934 // This one spits out the text of the paragraph
 935 bool Paragraph::simpleTeXOnePar(Buffer const & buf,
 936                                 BufferParams const & bparams,
 937                                 LyXFont const & outerfont,
 938                                 odocstream & os, TexRow & texrow,
 939                                 OutputParams const & runparams) const
 940 {
 941         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...     " << this << endl;
 942
 943         bool return_value = false;
 944
 945         LyXLayout_ptr style;
 946
 947         // well we have to check if we are in an inset with unlimited
 948         // length (all in one row) if that is true then we don't allow
 949         // any special options in the paragraph and also we don't allow
 950         // any environment other than the default layout of the text class
 951         // to be valid!
 952         bool asdefault = forceDefaultParagraphs();
 953
 954         if (asdefault) {
 955                 style = bparams.getLyXTextClass().defaultLayout();
 956         } else {
 957                 style = layout();
 958         }
 959
 960         // Current base font for all inherited font changes, without any
 961         // change caused by an individual character, except for the language:
 962         // It is set to the language of the first character.
 963         // As long as we are in the label, this font is the base font of the
 964         // label. Before the first body character it is set to the base font
 965         // of the body.
 966         // This must be identical to basefont in TeXOnePar().
 967         LyXFont basefont;
 968
 969         // output change tracking marks only if desired,
 970         // if dvipost is installed,
 971         // and with dvi/ps (other formats don't work)
 972         bool const output = bparams.outputChanges
 973                 && runparams.flavor == OutputParams::LATEX
 974                 && LaTeXFeatures::isAvailable("dvipost");
 975
 976         // Maybe we have to create a optional argument.
 977         pos_type body_pos = beginOfBody();
 978         unsigned int column = 0;
 979
 980         if (body_pos > 0) {
 981                 // the optional argument is kept in curly brackets in
 982                 // case it contains a ']'
 983                 os << "[{";
 984                 column += 2;
 985                 basefont = getLabelFont(bparams, outerfont);
 986         } else {
 987                 basefont = getLayoutFont(bparams, outerfont);
 988         }
 989
 990         // Which font is currently active?
 991         LyXFont running_font(basefont);
 992         // Do we have an open font change?
 993         bool open_font = false;
 994
 995         Change::Type runningChangeType = Change::UNCHANGED;
 996
 997         texrow.start(id(), 0);
 998
 999         // if the paragraph is empty, the loop will not be entered at all
1000         if (empty()) {
1001                 if (style->isCommand()) {
1002                         os << '{';
1003                         ++column;
1004                 }
1005                 if (!asdefault)
1006                         column += startTeXParParams(bparams, os, texrow,
1007                                                     runparams.moving_arg);
1008         }
1009
1010         // Computed only once per paragraph since bparams.encoding() is expensive
1011         Encoding const & doc_encoding = bparams.encoding();
1012         for (pos_type i = 0; i < size(); ++i) {
1013                 // First char in paragraph or after label?
1014                 if (i == body_pos) {
1015                         if (body_pos > 0) {
1016                                 if (open_font) {
1017                                         column += running_font.latexWriteEndChanges(
1018                                                 os, basefont, basefont, bparams);
1019                                         open_font = false;
1020                                 }
1021                                 basefont = getLayoutFont(bparams, outerfont);
1022                                 running_font = basefont;
1023
1024                                 column += Changes::latexMarkChange(os,
1025                                                 runningChangeType, Change::UNCHANGED, output);
1026                                 runningChangeType = Change::UNCHANGED;
1027
1028                                 os << "}] ";
1029                                 column +=3;
1030                         }
1031                         if (style->isCommand()) {
1032                                 os << '{';
1033                                 ++column;
1034                         }
1035
1036                         if (!asdefault)
1037                                 column += startTeXParParams(bparams, os,
1038                                                             texrow,
1039                                                             runparams.moving_arg);
1040                 }
1041
1042                 Change::Type changeType = pimpl_->lookupChange(i).type;
1043
1044                 // do not output text which is marked deleted
1045                 // if change tracking output is disabled
1046                 if (!output && changeType == Change::DELETED) {
1047                         runningChangeType = changeType;
1048                         continue;
1049                 }
1050
1051                 ++column;
1052
1053                 column += Changes::latexMarkChange(os, runningChangeType,
1054                         changeType, output);
1055                 runningChangeType = changeType;
1056
1057                 value_type c = getChar(i);
1058
1059                 // Fully instantiated font
1060                 LyXFont font = getFont(bparams, i, outerfont);
1061
1062                 LyXFont const last_font = running_font;
1063
1064                 // Do we need to close the previous font?
1065                 if (open_font &&
1066                     (font != running_font ||
1067                      font.language() != running_font.language()))
1068                 {
1069                         column += running_font.latexWriteEndChanges(
1070                                         os, basefont,
1071                                         (i == body_pos-1) ? basefont : font,
1072                                         bparams);
1073                         running_font = basefont;
1074                         open_font = false;
1075                 }
1076
1077                 // Do we need to change font?
1078                 if ((font != running_font ||
1079                      font.language() != running_font.language()) &&
1080                         i != body_pos - 1)
1081                 {
1082                         column += font.latexWriteStartChanges(
1083                                         os, basefont, last_font, bparams);
1084                         running_font = font;
1085                         open_font = true;
1086                 }
1087
1088                 if (c == ' ') {
1089                         // Do not print the separation of the optional argument
1090                         if (i != body_pos - 1) {
1091                                 if (pimpl_->simpleTeXBlanks(bparams,
1092                                                 doc_encoding, os, texrow,
1093                                                 i, column, font, *style))
1094                                         // A surrogate pair was output. We
1095                                         // must not call simpleTeXSpecialChars
1096                                         // in this iteration, since
1097                                         // simpleTeXBlanks incremented i, and
1098                                         // simpleTeXSpecialChars would output
1099                                         // the combining character again.
1100                                         continue;
1101                         }
1102                 }
1103
1104                 OutputParams rp = runparams;
1105                 rp.free_spacing = style->free_spacing;
1106                 rp.local_font = &font;
1107                 rp.intitle = style->intitle;
1108                 pimpl_->simpleTeXSpecialChars(buf, bparams, doc_encoding, os,
1109                                         texrow, rp, font, running_font,
1110                                         basefont, outerfont, open_font,
1111                                         runningChangeType, *style, i, column, c);
1112         }
1113
1114         // If we have an open font definition, we have to close it
1115         if (open_font) {
1116 #ifdef FIXED_LANGUAGE_END_DETECTION
1117                 if (next_) {
1118                         running_font
1119                                 .latexWriteEndChanges(os, basefont,
1120                                         next_->getFont(bparams, 0, outerfont),
1121                                         bparams);
1122                 } else {
1123                         running_font.latexWriteEndChanges(os, basefont,
1124                                                           basefont, bparams);
1125                 }
1126 #else
1127 #ifdef WITH_WARNINGS
1128 //#warning For now we ALWAYS have to close the foreign font settings if they are
1129 //#warning there as we start another \selectlanguage with the next paragraph if
1130 //#warning we are in need of this. This should be fixed sometime (Jug)
1131 #endif
1132                 running_font.latexWriteEndChanges(os, basefont, basefont,
1133                                                   bparams);
1134 #endif
1135         }
1136
1137         column += Changes::latexMarkChange(os,
1138                         runningChangeType, Change::UNCHANGED, output);
1139
1140         // Needed if there is an optional argument but no contents.
1141         if (body_pos > 0 && body_pos == size()) {
1142                 os << "}]~";
1143                 return_value = false;
1144         }
1145
1146         if (!asdefault) {
1147                 column += endTeXParParams(bparams, os, texrow,
1148                                           runparams.moving_arg);
1149         }
1150
1151         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...done " << this << endl;
1152         return return_value;
1153 }
1154
1155
1156 namespace {
1157
1158 enum PAR_TAG {
1159         PAR_NONE=0,
1160         TT = 1,
1161         SF = 2,
1162         BF = 4,
1163         IT = 8,
1164         SL = 16,
1165         EM = 32
1166 };
1167
1168
1169 string tag_name(PAR_TAG const & pt) {
1170         switch (pt) {
1171         case PAR_NONE: return "!-- --";
1172         case TT: return "tt";
1173         case SF: return "sf";
1174         case BF: return "bf";
1175         case IT: return "it";
1176         case SL: return "sl";
1177         case EM: return "em";
1178         }
1179         return "";
1180 }
1181
1182
1183 inline
1184 void operator|=(PAR_TAG & p1, PAR_TAG const & p2)
1185 {
1186         p1 = static_cast<PAR_TAG>(p1 | p2);
1187 }
1188
1189
1190 inline
1191 void reset(PAR_TAG & p1, PAR_TAG const & p2)
1192 {
1193         p1 = static_cast<PAR_TAG>(p1 & ~p2);
1194 }
1195
1196 } // anon
1197
1198
1199 bool Paragraph::emptyTag() const
1200 {
1201         for (pos_type i = 0; i < size(); ++i) {
1202                 if (isInset(i)) {
1203                         InsetBase const * inset = getInset(i);
1204                         InsetBase::Code lyx_code = inset->lyxCode();
1205                         if (lyx_code != InsetBase::TOC_CODE &&
1206                             lyx_code != InsetBase::INCLUDE_CODE &&
1207                             lyx_code != InsetBase::GRAPHICS_CODE &&
1208                             lyx_code != InsetBase::ERT_CODE &&
1209                             lyx_code != InsetBase::FLOAT_CODE &&
1210                             lyx_code != InsetBase::TABULAR_CODE) {
1211                                 return false;
1212                         }
1213                 } else {
1214                         value_type c = getChar(i);
1215                         if (c != ' ' && c != '\t')
1216                                 return false;
1217                 }
1218         }
1219         return true;
1220 }
1221
1222
1223 string Paragraph::getID(Buffer const & buf, OutputParams const & runparams) const
1224 {
1225         for (pos_type i = 0; i < size(); ++i) {
1226                 if (isInset(i)) {
1227                         InsetBase const * inset = getInset(i);
1228                         InsetBase::Code lyx_code = inset->lyxCode();
1229                         if (lyx_code == InsetBase::LABEL_CODE) {
1230                                 string const id = static_cast<InsetCommand const *>(inset)->getContents();
1231                                 return "id='" + to_utf8(sgml::cleanID(buf, runparams, from_utf8(id))) + "'";
1232                         }
1233                 }
1234
1235         }
1236         return string();
1237 }
1238
1239
1240 pos_type Paragraph::getFirstWord(Buffer const & buf, odocstream & os, OutputParams const & runparams) const
1241 {
1242         pos_type i;
1243         for (i = 0; i < size(); ++i) {
1244                 if (isInset(i)) {
1245                         InsetBase const * inset = getInset(i);
1246                         inset->docbook(buf, os, runparams);
1247                 } else {
1248                         value_type c = getChar(i);
1249                         if (c == ' ')
1250                                 break;
1251                         os << sgml::escapeChar(c);
1252                 }
1253         }
1254         return i;
1255 }
1256
1257
1258 bool Paragraph::onlyText(Buffer const & buf, LyXFont const & outerfont, pos_type initial) const
1259 {
1260         LyXFont font_old;
1261
1262         for (pos_type i = initial; i < size(); ++i) {
1263                 LyXFont font = getFont(buf.params(), i, outerfont);
1264                 if (isInset(i))
1265                         return false;
1266                 if (i != initial && font != font_old)
1267                         return false;
1268                 font_old = font;
1269         }
1270
1271         return true;
1272 }
1273
1274
1275 void Paragraph::simpleDocBookOnePar(Buffer const & buf,
1276                                     odocstream & os,
1277                                     OutputParams const & runparams,
1278                                     LyXFont const & outerfont,
1279                                     pos_type initial) const
1280 {
1281         bool emph_flag = false;
1282
1283         LyXLayout_ptr const & style = layout();
1284         LyXFont font_old =
1285                 style->labeltype == LABEL_MANUAL ? style->labelfont : style->font;
1286
1287         if (style->pass_thru && !onlyText(buf, outerfont, initial))
1288                 os << "]]>";
1289
1290         // parsing main loop
1291         for (pos_type i = initial; i < size(); ++i) {
1292                 LyXFont font = getFont(buf.params(), i, outerfont);
1293
1294                 // handle <emphasis> tag
1295                 if (font_old.emph() != font.emph()) {
1296                         if (font.emph() == LyXFont::ON) {
1297                                 os << "<emphasis>";
1298                                 emph_flag = true;
1299                         } else if (i != initial) {
1300                                 os << "</emphasis>";
1301                                 emph_flag = false;
1302                         }
1303                 }
1304
1305                 if (isInset(i)) {
1306                         InsetBase const * inset = getInset(i);
1307                         inset->docbook(buf, os, runparams);
1308                 } else {
1309                         value_type c = getChar(i);
1310
1311                         if (style->pass_thru)
1312                                 os.put(c);
1313                         else
1314                                 os << sgml::escapeChar(c);
1315                 }
1316                 font_old = font;
1317         }
1318
1319         if (emph_flag) {
1320                 os << "</emphasis>";
1321         }
1322
1323         if (style->free_spacing)
1324                 os << '\n';
1325         if (style->pass_thru && !onlyText(buf, outerfont, initial))
1326                 os << "<![CDATA[";
1327 }
1328
1329
1330 bool Paragraph::isNewline(pos_type pos) const
1331 {
1332         return isInset(pos)
1333                 && getInset(pos)->lyxCode() == InsetBase::NEWLINE_CODE;
1334 }
1335
1336
1337 bool Paragraph::isLineSeparator(pos_type pos) const
1338 {
1339         value_type const c = getChar(pos);
1340         return isLineSeparatorChar(c)
1341                 || (c == Paragraph::META_INSET && getInset(pos) &&
1342                 getInset(pos)->isLineSeparator());
1343 }
1344
1345
1346 /// Used by the spellchecker
1347 bool Paragraph::isLetter(pos_type pos) const
1348 {
1349         if (isInset(pos))
1350                 return getInset(pos)->isLetter();
1351         else {
1352                 value_type const c = getChar(pos);
1353                 return isLetterChar(c) || isDigit(c);
1354         }
1355 }
1356
1357
1358 Language const *
1359 Paragraph::getParLanguage(BufferParams const & bparams) const
1360 {
1361         if (!empty())
1362                 return getFirstFontSettings(bparams).language();
1363 #ifdef WITH_WARNINGS
1364 #warning FIXME we should check the prev par as well (Lgb)
1365 #endif
1366         return bparams.language;
1367 }
1368
1369
1370 bool Paragraph::isRightToLeftPar(BufferParams const & bparams) const
1371 {
1372         return lyxrc.rtl_support
1373                 && getParLanguage(bparams)->rightToLeft()
1374                 && ownerCode() != InsetBase::ERT_CODE;
1375 }
1376
1377
1378 void Paragraph::changeLanguage(BufferParams const & bparams,
1379                                Language const * from, Language const * to)
1380 {
1381         // change language including dummy font change at the end
1382         for (pos_type i = 0; i <= size(); ++i) {
1383                 LyXFont font = getFontSettings(bparams, i);
1384                 if (font.language() == from) {
1385                         font.setLanguage(to);
1386                         setFont(i, font);
1387                 }
1388         }
1389 }
1390
1391
1392 bool Paragraph::isMultiLingual(BufferParams const & bparams) const
1393 {
1394         Language const * doc_language = bparams.language;
1395         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
1396         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
1397
1398         for (; cit != end; ++cit)
1399                 if (cit->font().language() != ignore_language &&
1400                     cit->font().language() != latex_language &&
1401                     cit->font().language() != doc_language)
1402                         return true;
1403         return false;
1404 }
1405
1406
1407 // Convert the paragraph to a string.
1408 // Used for building the table of contents
1409 docstring const Paragraph::asString(Buffer const & buffer, bool label) const
1410 {
1411         return asString(buffer, 0, size(), label);
1412 }
1413
1414
1415 docstring const Paragraph::asString(Buffer const & buffer,
1416                                  pos_type beg, pos_type end, bool label) const
1417 {
1418
1419         odocstringstream os;
1420
1421         if (beg == 0 && label && !params().labelString().empty())
1422                 os << params().labelString() << ' ';
1423
1424         for (pos_type i = beg; i < end; ++i) {
1425                 value_type const c = getUChar(buffer.params(), i);
1426                 if (isPrintable(c))
1427                         os.put(c);
1428                 else if (c == META_INSET)
1429                         getInset(i)->textString(buffer, os);
1430         }
1431
1432         return os.str();
1433 }
1434
1435
1436 void Paragraph::setInsetOwner(InsetBase * inset)
1437 {
1438         pimpl_->inset_owner = inset;
1439 }
1440
1441
1442 Change const & Paragraph::lookupChange(pos_type pos) const
1443 {
1444         BOOST_ASSERT(pos <= size());
1445         return pimpl_->lookupChange(pos);
1446 }
1447
1448
1449 bool Paragraph::isChanged(pos_type start, pos_type end) const
1450 {
1451         return pimpl_->isChanged(start, end);
1452 }
1453
1454
1455 bool Paragraph::isMergedOnEndOfParDeletion(bool trackChanges) const
1456 {
1457         return pimpl_->isMergedOnEndOfParDeletion(trackChanges);
1458 }
1459
1460
1461 void Paragraph::setChange(Change const & change)
1462 {
1463         pimpl_->setChange(change);
1464 }
1465
1466
1467 void Paragraph::setChange(pos_type pos, Change const & change)
1468 {
1469         pimpl_->setChange(pos, change);
1470 }
1471
1472
1473 void Paragraph::acceptChanges(BufferParams const & bparams, pos_type start, pos_type end)
1474 {
1475         return pimpl_->acceptChanges(bparams, start, end);
1476 }
1477
1478
1479 void Paragraph::rejectChanges(BufferParams const & bparams, pos_type start, pos_type end)
1480 {
1481         return pimpl_->rejectChanges(bparams, start, end);
1482 }
1483
1484
1485 int Paragraph::id() const
1486 {
1487         return pimpl_->id_;
1488 }
1489
1490
1491 LyXLayout_ptr const & Paragraph::layout() const
1492 {
1493         return layout_;
1494 }
1495
1496
1497 void Paragraph::layout(LyXLayout_ptr const & new_layout)
1498 {
1499         layout_ = new_layout;
1500 }
1501
1502
1503 InsetBase * Paragraph::inInset() const
1504 {
1505         return pimpl_->inset_owner;
1506 }
1507
1508
1509 InsetBase::Code Paragraph::ownerCode() const
1510 {
1511         return pimpl_->inset_owner
1512                 ? pimpl_->inset_owner->lyxCode() : InsetBase::NO_CODE;
1513 }
1514
1515
1516 ParagraphParameters & Paragraph::params()
1517 {
1518         return pimpl_->params;
1519 }
1520
1521
1522 ParagraphParameters const & Paragraph::params() const
1523 {
1524         return pimpl_->params;
1525 }
1526
1527
1528 bool Paragraph::isFreeSpacing() const
1529 {
1530         if (layout()->free_spacing)
1531                 return true;
1532
1533         // for now we just need this, later should we need this in some
1534         // other way we can always add a function to InsetBase too.
1535         return ownerCode() == InsetBase::ERT_CODE;
1536 }
1537
1538
1539 bool Paragraph::allowEmpty() const
1540 {
1541         if (layout()->keepempty)
1542                 return true;
1543         return ownerCode() == InsetBase::ERT_CODE;
1544 }
1545
1546
1547 char_type Paragraph::transformChar(char_type c, pos_type pos) const
1548 {
1549         if (!Encodings::is_arabic(c))
1550                 if (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 && isDigit(c))
1551                         // FIXME UNICODE What does this do?
1552                         return c + (0xb0 - '0');
1553                 else
1554                         return c;
1555
1556         value_type const prev_char = pos > 0 ? getChar(pos - 1) : ' ';
1557         value_type next_char = ' ';
1558
1559         for (pos_type i = pos + 1, end = size(); i < end; ++i) {
1560                 value_type const par_char = getChar(i);
1561                 if (!Encodings::isComposeChar_arabic(par_char)) {
1562                         next_char = par_char;
1563                         break;
1564                 }
1565         }
1566
1567         if (Encodings::is_arabic(next_char)) {
1568                 if (Encodings::is_arabic(prev_char) &&
1569                         !Encodings::is_arabic_special(prev_char))
1570                         return Encodings::transformChar(c, Encodings::FORM_MEDIAL);
1571                 else
1572                         return Encodings::transformChar(c, Encodings::FORM_INITIAL);
1573         } else {
1574                 if (Encodings::is_arabic(prev_char) &&
1575                         !Encodings::is_arabic_special(prev_char))
1576                         return Encodings::transformChar(c, Encodings::FORM_FINAL);
1577                 else
1578                         return Encodings::transformChar(c, Encodings::FORM_ISOLATED);
1579         }
1580 }
1581
1582
1583 bool Paragraph::hfillExpansion(Row const & row, pos_type pos) const
1584 {
1585         if (!isHfill(pos))
1586                 return false;
1587
1588         BOOST_ASSERT(pos >= row.pos() && pos < row.endpos());
1589
1590         // expand at the end of a row only if there is another hfill on the same row
1591         if (pos == row.endpos() - 1) {
1592                 for (pos_type i = row.pos(); i < pos; i++) {
1593                         if (isHfill(i))
1594                                 return true;
1595                 }
1596                 return false;
1597         }
1598
1599         // expand at the beginning of a row only if it is the first row of a paragraph
1600         if (pos == row.pos()) {
1601                 return pos == 0;
1602         }
1603
1604         // do not expand in some labels
1605         if (layout()->margintype != MARGIN_MANUAL && pos < beginOfBody())
1606                 return false;
1607
1608         // if there is anything between the first char of the row and
1609         // the specified position that is neither a newline nor an hfill,
1610         // the hfill will be expanded, otherwise it won't
1611         for (pos_type i = row.pos(); i < pos; i++) {
1612                 if (!isNewline(i) && !isHfill(i))
1613                         return true;
1614         }
1615         return false;
1616 }
1617
1618
1619 bool Paragraph::checkBiblio(bool track_changes)
1620 {
1621         // Add bibitem insets if necessary
1622         if (layout()->labeltype != LABEL_BIBLIO)
1623                 return false;
1624
1625         bool hasbibitem = !insetlist.empty()
1626                 // Insist on it being in pos 0
1627                 && getChar(0) == Paragraph::META_INSET
1628                 && insetlist.begin()->inset->lyxCode() == InsetBase::BIBITEM_CODE;
1629
1630         if (hasbibitem)
1631                 return false;
1632
1633         InsetBibitem * inset(new InsetBibitem(InsetCommandParams("bibitem")));
1634         insertInset(0, static_cast<InsetBase *>(inset),
1635                 Change(track_changes ? Change::INSERTED : Change::UNCHANGED));
1636
1637         return true;
1638 }
1639
1640 } // namespace lyx