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 "output_latex.h"
  37 #include "paragraph_funcs.h"
  38
  39 #include "rowpainter.h"
  40
  41 #include "sgml.h"
  42 #include "texrow.h"
  43 #include "vspace.h"
  44
  45 #include "frontends/FontMetrics.h"
  46
  47 #include "insets/insetbibitem.h"
  48 #include "insets/insetoptarg.h"
  49
  50 #include "support/lstrings.h"
  51 #include "support/textutils.h"
  52 #include "support/convert.h"
  53 #include "support/unicode.h"
  54
  55 #include <boost/bind.hpp>
  56
  57 #include <algorithm>
  58 #include <list>
  59 #include <stack>
  60 #include <sstream>
  61
  62 using std::distance;
  63 using std::endl;
  64 using std::list;
  65 using std::stack;
  66 using std::string;
  67 using std::ostream;
  68 using std::ostringstream;
  69
  70 namespace lyx {
  71
  72 using support::contains;
  73 using support::rsplit;
  74 using support::subst;
  75
  76 Paragraph::Paragraph()
  77         : begin_of_body_(0), pimpl_(new Paragraph::Pimpl(this))
  78 {
  79         itemdepth = 0;
  80         params().clear();
  81 }
  82
  83
  84 Paragraph::Paragraph(Paragraph const & par)
  85         : itemdepth(par.itemdepth), insetlist(par.insetlist),
  86         layout_(par.layout_),
  87         text_(par.text_), begin_of_body_(par.begin_of_body_),
  88         pimpl_(new Paragraph::Pimpl(*par.pimpl_, this))
  89 {
  90         //lyxerr << "Paragraph::Paragraph(Paragraph const&)" << endl;
  91         InsetList::iterator it = insetlist.begin();
  92         InsetList::iterator end = insetlist.end();
  93         for (; it != end; ++it)
  94                 it->inset = it->inset->clone().release();
  95 }
  96
  97
  98 Paragraph & Paragraph::operator=(Paragraph const & par)
  99 {
 100         // needed as we will destroy the pimpl_ before copying it
 101         if (&par != this) {
 102                 itemdepth = par.itemdepth;
 103
 104                 insetlist = par.insetlist;
 105                 InsetList::iterator it = insetlist.begin();
 106                 InsetList::iterator end = insetlist.end();
 107                 for (; it != end; ++it)
 108                         it->inset = it->inset->clone().release();
 109
 110                 layout_ = par.layout();
 111                 text_ = par.text_;
 112                 begin_of_body_ = par.begin_of_body_;
 113
 114                 delete pimpl_;
 115                 pimpl_ = new Pimpl(*par.pimpl_, this);
 116         }
 117         return *this;
 118 }
 119
 120
 121 Paragraph::~Paragraph()
 122 {
 123         delete pimpl_;
 124         //
 125         //lyxerr << "Paragraph::paragraph_id = "
 126         //       << Paragraph::paragraph_id << endl;
 127 }
 128
 129
 130 void Paragraph::write(Buffer const & buf, ostream & os,
 131                           BufferParams const & bparams,
 132                           depth_type & dth) const
 133 {
 134         // The beginning or end of a deeper (i.e. nested) area?
 135         if (dth != params().depth()) {
 136                 if (params().depth() > dth) {
 137                         while (params().depth() > dth) {
 138                                 os << "\n\\begin_deeper";
 139                                 ++dth;
 140                         }
 141                 } else {
 142                         while (params().depth() < dth) {
 143                                 os << "\n\\end_deeper";
 144                                 --dth;
 145                         }
 146                 }
 147         }
 148
 149         // First write the layout
 150         os << "\n\\begin_layout " << layout()->name() << '\n';
 151
 152         params().write(os);
 153
 154         LyXFont font1(LyXFont::ALL_INHERIT, bparams.language);
 155
 156         Change running_change = Change(Change::UNCHANGED);
 157
 158         int column = 0;
 159         for (pos_type i = 0; i <= size(); ++i) {
 160
 161                 Change change = pimpl_->lookupChange(i);
 162                 Changes::lyxMarkChange(os, column, running_change, change);
 163                 running_change = change;
 164
 165                 if (i == size())
 166                         break;
 167
 168                 // Write font changes
 169                 LyXFont font2 = getFontSettings(bparams, i);
 170                 if (font2 != font1) {
 171                         font2.lyxWriteChanges(font1, os);
 172                         column = 0;
 173                         font1 = font2;
 174                 }
 175
 176                 value_type const c = getChar(i);
 177                 switch (c) {
 178                 case META_INSET:
 179                 {
 180                         InsetBase const * inset = getInset(i);
 181                         if (inset)
 182                                 if (inset->directWrite()) {
 183                                         // international char, let it write
 184                                         // code directly so it's shorter in
 185                                         // the file
 186                                         inset->write(buf, os);
 187                                 } else {
 188                                         if (i)
 189                                                 os << '\n';
 190                                         os << "\\begin_inset ";
 191                                         inset->write(buf, os);
 192                                         os << "\n\\end_inset\n\n";
 193                                         column = 0;
 194                                 }
 195                 }
 196                 break;
 197                 case '\\':
 198                         os << "\n\\backslash\n";
 199                         column = 0;
 200                         break;
 201                 case '.':
 202                         if (i + 1 < size() && getChar(i + 1) == ' ') {
 203                                 os << ".\n";
 204                                 column = 0;
 205                         } else
 206                                 os << '.';
 207                         break;
 208                 default:
 209                         if ((column > 70 && c == ' ')
 210                             || column > 79) {
 211                                 os << '\n';
 212                                 column = 0;
 213                         }
 214                         // this check is to amend a bug. LyX sometimes
 215                         // inserts '\0' this could cause problems.
 216                         if (c != '\0') {
 217                                 std::vector<char> tmp = ucs4_to_utf8(c);
 218                                 tmp.push_back('\0');
 219                                 os << &tmp[0];
 220                         } else
 221                                 lyxerr << "ERROR (Paragraph::writeFile):"
 222                                         " NULL char in structure." << endl;
 223                         ++column;
 224                         break;
 225                 }
 226         }
 227
 228         os << "\n\\end_layout\n";
 229 }
 230
 231
 232 void Paragraph::validate(LaTeXFeatures & features) const
 233 {
 234         pimpl_->validate(features, *layout());
 235 }
 236
 237
 238 bool Paragraph::eraseChar(pos_type pos, bool trackChanges)
 239 {
 240         return pimpl_->eraseChar(pos, trackChanges);
 241 }
 242
 243
 244 int Paragraph::eraseChars(pos_type start, pos_type end, bool trackChanges)
 245 {
 246         return pimpl_->eraseChars(start, end, trackChanges);
 247 }
 248
 249
 250 void Paragraph::insert(pos_type start, docstring const & str,
 251                        LyXFont const & font, Change const & change)
 252 {
 253         for (size_t i = 0, n = str.size(); i != n ; ++i)
 254                 insertChar(start + i, str[i], font, change);
 255 }
 256
 257
 258 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 259                            bool trackChanges)
 260 {
 261         pimpl_->insertChar(pos, c, Change(trackChanges ?
 262                            Change::INSERTED : Change::UNCHANGED));
 263 }
 264
 265
 266 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 267                            LyXFont const & font, bool trackChanges)
 268 {
 269         pimpl_->insertChar(pos, c, Change(trackChanges ?
 270                            Change::INSERTED : Change::UNCHANGED));
 271         setFont(pos, font);
 272 }
 273
 274
 275 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 276                            LyXFont const & font, Change const & change)
 277 {
 278         pimpl_->insertChar(pos, c, change);
 279         setFont(pos, font);
 280 }
 281
 282
 283 void Paragraph::insertInset(pos_type pos, InsetBase * inset,
 284                             Change const & change)
 285 {
 286         pimpl_->insertInset(pos, inset, change);
 287 }
 288
 289
 290 void Paragraph::insertInset(pos_type pos, InsetBase * inset,
 291                             LyXFont const & font, Change const & change)
 292 {
 293         pimpl_->insertInset(pos, inset, change);
 294         setFont(pos, font);
 295 }
 296
 297
 298 bool Paragraph::insetAllowed(InsetBase_code code)
 299 {
 300         return !pimpl_->inset_owner || pimpl_->inset_owner->insetAllowed(code);
 301 }
 302
 303
 304 // Gets uninstantiated font setting at position.
 305 LyXFont const Paragraph::getFontSettings(BufferParams const & bparams,
 306                                          pos_type pos) const
 307 {
 308         if (pos > size()) {
 309                 lyxerr << " pos: " << pos << " size: " << size() << endl;
 310                 BOOST_ASSERT(pos <= size());
 311         }
 312
 313         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 314         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 315         for (; cit != end; ++cit)
 316                 if (cit->pos() >= pos)
 317                         break;
 318
 319         if (cit != end)
 320                 return cit->font();
 321
 322         if (pos == size() && !empty())
 323                 return getFontSettings(bparams, pos - 1);
 324
 325         return LyXFont(LyXFont::ALL_INHERIT, getParLanguage(bparams));
 326 }
 327
 328
 329 FontSpan Paragraph::fontSpan(pos_type pos) const
 330 {
 331         BOOST_ASSERT(pos <= size());
 332         pos_type start = 0;
 333
 334         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 335         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 336         for (; cit != end; ++cit) {
 337                 if (cit->pos() >= pos) {
 338                         if (pos >= beginOfBody())
 339                                 return FontSpan(std::max(start, beginOfBody()),
 340                                                 cit->pos());
 341                         else
 342                                 return FontSpan(start,
 343                                                 std::min(beginOfBody() - 1,
 344                                                          cit->pos()));
 345                 }
 346                 start = cit->pos() + 1;
 347         }
 348
 349         // This should not happen, but if so, we take no chances.
 350         //lyxerr << "Paragraph::getEndPosOfFontSpan: This should not happen!"
 351         //      << endl;
 352         return FontSpan(pos, pos);
 353 }
 354
 355
 356 // Gets uninstantiated font setting at position 0
 357 LyXFont const Paragraph::getFirstFontSettings(BufferParams const & bparams) const
 358 {
 359         if (!empty() && !pimpl_->fontlist.empty())
 360                 return pimpl_->fontlist[0].font();
 361
 362         return LyXFont(LyXFont::ALL_INHERIT, bparams.language);
 363 }
 364
 365
 366 // Gets the fully instantiated font at a given position in a paragraph
 367 // This is basically the same function as LyXText::GetFont() in text2.C.
 368 // The difference is that this one is used for generating the LaTeX file,
 369 // and thus cosmetic "improvements" are disallowed: This has to deliver
 370 // the true picture of the buffer. (Asger)
 371 LyXFont const Paragraph::getFont(BufferParams const & bparams, pos_type pos,
 372                                  LyXFont const & outerfont) const
 373 {
 374         BOOST_ASSERT(pos >= 0);
 375
 376         LyXLayout_ptr const & lout = layout();
 377
 378         pos_type const body_pos = beginOfBody();
 379
 380         LyXFont layoutfont;
 381         if (pos < body_pos)
 382                 layoutfont = lout->labelfont;
 383         else
 384                 layoutfont = lout->font;
 385
 386         LyXFont font = getFontSettings(bparams, pos);
 387         font.realize(layoutfont);
 388         font.realize(outerfont);
 389         font.realize(bparams.getFont());
 390
 391         return font;
 392 }
 393
 394
 395 LyXFont const Paragraph::getLabelFont
 396         (BufferParams const & bparams, LyXFont const & outerfont) const
 397 {
 398         LyXFont tmpfont = layout()->labelfont;
 399         tmpfont.setLanguage(getParLanguage(bparams));
 400         tmpfont.realize(outerfont);
 401         tmpfont.realize(bparams.getFont());
 402         return tmpfont;
 403 }
 404
 405
 406 LyXFont const Paragraph::getLayoutFont
 407         (BufferParams const & bparams, LyXFont const & outerfont) const
 408 {
 409         LyXFont tmpfont = layout()->font;
 410         tmpfont.setLanguage(getParLanguage(bparams));
 411         tmpfont.realize(outerfont);
 412         tmpfont.realize(bparams.getFont());
 413         return tmpfont;
 414 }
 415
 416
 417 /// Returns the height of the highest font in range
 418 LyXFont_size Paragraph::highestFontInRange
 419         (pos_type startpos, pos_type endpos, LyXFont_size def_size) const
 420 {
 421         if (pimpl_->fontlist.empty())
 422                 return def_size;
 423
 424         Pimpl::FontList::const_iterator end_it = pimpl_->fontlist.begin();
 425         Pimpl::FontList::const_iterator const end = pimpl_->fontlist.end();
 426         for (; end_it != end; ++end_it) {
 427                 if (end_it->pos() >= endpos)
 428                         break;
 429         }
 430
 431         if (end_it != end)
 432                 ++end_it;
 433
 434         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 435         for (; cit != end; ++cit) {
 436                 if (cit->pos() >= startpos)
 437                         break;
 438         }
 439
 440         LyXFont::FONT_SIZE maxsize = LyXFont::SIZE_TINY;
 441         for (; cit != end_it; ++cit) {
 442                 LyXFont::FONT_SIZE size = cit->font().size();
 443                 if (size == LyXFont::INHERIT_SIZE)
 444                         size = def_size;
 445                 if (size > maxsize && size <= LyXFont::SIZE_HUGER)
 446                         maxsize = size;
 447         }
 448         return maxsize;
 449 }
 450
 451
 452 Paragraph::value_type
 453 Paragraph::getUChar(BufferParams const & bparams, pos_type pos) const
 454 {
 455         value_type c = getChar(pos);
 456         if (!lyxrc.rtl_support)
 457                 return c;
 458
 459         value_type uc = c;
 460         switch (c) {
 461         case '(':
 462                 uc = ')';
 463                 break;
 464         case ')':
 465                 uc = '(';
 466                 break;
 467         case '[':
 468                 uc = ']';
 469                 break;
 470         case ']':
 471                 uc = '[';
 472                 break;
 473         case '{':
 474                 uc = '}';
 475                 break;
 476         case '}':
 477                 uc = '{';
 478                 break;
 479         case '<':
 480                 uc = '>';
 481                 break;
 482         case '>':
 483                 uc = '<';
 484                 break;
 485         }
 486         if (uc != c && getFontSettings(bparams, pos).isRightToLeft())
 487                 return uc;
 488         else
 489                 return c;
 490 }
 491
 492
 493 void Paragraph::setFont(pos_type pos, LyXFont const & font)
 494 {
 495         BOOST_ASSERT(pos <= size());
 496
 497         // First, reduce font against layout/label font
 498         // Update: The setCharFont() routine in text2.C already
 499         // reduces font, so we don't need to do that here. (Asger)
 500         // No need to simplify this because it will disappear
 501         // in a new kernel. (Asger)
 502         // Next search font table
 503
 504         Pimpl::FontList::iterator beg = pimpl_->fontlist.begin();
 505         Pimpl::FontList::iterator it = beg;
 506         Pimpl::FontList::iterator endit = pimpl_->fontlist.end();
 507         for (; it != endit; ++it) {
 508                 if (it->pos() >= pos)
 509                         break;
 510         }
 511         size_t const i = distance(beg, it);
 512         bool notfound = (it == endit);
 513
 514         if (!notfound && pimpl_->fontlist[i].font() == font)
 515                 return;
 516
 517         bool begin = pos == 0 || notfound ||
 518                 (i > 0 && pimpl_->fontlist[i - 1].pos() == pos - 1);
 519         // Is position pos is a beginning of a font block?
 520         bool end = !notfound && pimpl_->fontlist[i].pos() == pos;
 521         // Is position pos is the end of a font block?
 522         if (begin && end) { // A single char block
 523                 if (i + 1 < pimpl_->fontlist.size() &&
 524                     pimpl_->fontlist[i + 1].font() == font) {
 525                         // Merge the singleton block with the next block
 526                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 527                         if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 528                                 pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i - 1);
 529                 } else if (i > 0 && pimpl_->fontlist[i - 1].font() == font) {
 530                         // Merge the singleton block with the previous block
 531                         pimpl_->fontlist[i - 1].pos(pos);
 532                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 533                 } else
 534                         pimpl_->fontlist[i].font(font);
 535         } else if (begin) {
 536                 if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 537                         pimpl_->fontlist[i - 1].pos(pos);
 538                 else
 539                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 540                                         Pimpl::FontTable(pos, font));
 541         } else if (end) {
 542                 pimpl_->fontlist[i].pos(pos - 1);
 543                 if (!(i + 1 < pimpl_->fontlist.size() &&
 544                       pimpl_->fontlist[i + 1].font() == font))
 545                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 546                                         Pimpl::FontTable(pos, font));
 547         } else { // The general case. The block is splitted into 3 blocks
 548                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 549                                 Pimpl::FontTable(pos - 1, pimpl_->fontlist[i].font()));
 550                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 551                                 Pimpl::FontTable(pos, font));
 552         }
 553 }
 554
 555
 556 void Paragraph::makeSameLayout(Paragraph const & par)
 557 {
 558         layout(par.layout());
 559         // move to pimpl?
 560         params() = par.params();
 561 }
 562
 563
 564 bool Paragraph::stripLeadingSpaces(bool trackChanges)
 565 {
 566         if (isFreeSpacing())
 567                 return false;
 568
 569         int pos = 0;
 570         int count = 0;
 571
 572         while (pos < size() && (isNewline(pos) || isLineSeparator(pos))) {
 573                 if (eraseChar(pos, trackChanges))
 574                         ++count;
 575                 else
 576                         ++pos;
 577         }
 578
 579         return count > 0 || pos > 0;
 580 }
 581
 582
 583 bool Paragraph::hasSameLayout(Paragraph const & par) const
 584 {
 585         return par.layout() == layout() && params().sameLayout(par.params());
 586 }
 587
 588
 589 depth_type Paragraph::getDepth() const
 590 {
 591         return params().depth();
 592 }
 593
 594
 595 depth_type Paragraph::getMaxDepthAfter() const
 596 {
 597         if (layout()->isEnvironment())
 598                 return params().depth() + 1;
 599         else
 600                 return params().depth();
 601 }
 602
 603
 604 char Paragraph::getAlign() const
 605 {
 606         if (params().align() == LYX_ALIGN_LAYOUT)
 607                 return layout()->align;
 608         else
 609                 return params().align();
 610 }
 611
 612
 613 docstring const & Paragraph::getLabelstring() const
 614 {
 615         return params().labelString();
 616 }
 617
 618
 619 // the next two functions are for the manual labels
 620 docstring const Paragraph::getLabelWidthString() const
 621 {
 622         if (!params().labelWidthString().empty())
 623                 return params().labelWidthString();
 624         else
 625                 return _("Senseless with this layout!");
 626 }
 627
 628
 629 void Paragraph::setLabelWidthString(docstring const & s)
 630 {
 631         params().labelWidthString(s);
 632 }
 633
 634
 635 docstring const Paragraph::translateIfPossible(docstring const & s,
 636                 BufferParams const & bparams) const
 637 {
 638         if (!support::isAscii(s) || s.empty()) {
 639                 // This must be a user defined layout. We cannot translate
 640                 // this, since gettext accepts only ascii keys.
 641                 return s;
 642         }
 643         // Probably standard layout, try to translate
 644         Messages & m = getMessages(getParLanguage(bparams)->code());
 645         return m.get(to_ascii(s));
 646 }
 647
 648
 649 docstring Paragraph::expandLabel(LyXLayout_ptr const & layout,
 650                 BufferParams const & bparams, bool process_appendix) const
 651 {
 652         LyXTextClass const & tclass = bparams.getLyXTextClass();
 653
 654         docstring fmt;
 655         if (process_appendix && params().appendix())
 656                 fmt = translateIfPossible(layout->labelstring_appendix(),
 657                         bparams);
 658         else
 659                 fmt = translateIfPossible(layout->labelstring(), bparams);
 660
 661         // handle 'inherited level parts' in 'fmt',
 662         // i.e. the stuff between '@' in   '@Section@.\arabic{subsection}'
 663         size_t const i = fmt.find('@', 0);
 664         if (i != docstring::npos) {
 665                 size_t const j = fmt.find('@', i + 1);
 666                 if (j != docstring::npos) {
 667                         docstring parent(fmt, i + 1, j - i - 1);
 668                         // FIXME UNICODE
 669                         docstring label = expandLabel(tclass[to_utf8(parent)], bparams);
 670                         fmt = docstring(fmt, 0, i) + label + docstring(fmt, j + 1, docstring::npos);
 671                 }
 672         }
 673
 674         return tclass.counters().counterLabel(fmt);
 675 }
 676
 677
 678 void Paragraph::applyLayout(LyXLayout_ptr const & new_layout)
 679 {
 680         layout(new_layout);
 681         params().labelWidthString(docstring());
 682         params().align(LYX_ALIGN_LAYOUT);
 683         params().spacing(Spacing(Spacing::Default));
 684 }
 685
 686
 687 pos_type Paragraph::beginOfBody() const
 688 {
 689         return begin_of_body_;
 690 }
 691
 692
 693 void Paragraph::setBeginOfBody()
 694 {
 695         if (layout()->labeltype != LABEL_MANUAL) {
 696                 begin_of_body_ = 0;
 697                 return;
 698         }
 699
 700         // Unroll the first two cycles of the loop
 701         // and remember the previous character to
 702         // remove unnecessary getChar() calls
 703         pos_type i = 0;
 704         pos_type end = size();
 705         if (i < end && !isNewline(i)) {
 706                 ++i;
 707                 char_type previous_char = 0;
 708                 char_type temp = 0;
 709                 if (i < end) {
 710                         previous_char = text_[i];
 711                         if (!isNewline(i)) {
 712                                 ++i;
 713                                 while (i < end && previous_char != ' ') {
 714                                         temp = text_[i];
 715                                         if (isNewline(i))
 716                                                 break;
 717                                         ++i;
 718                                         previous_char = temp;
 719                                 }
 720                         }
 721                 }
 722         }
 723
 724         begin_of_body_ = i;
 725 }
 726
 727
 728 // returns -1 if inset not found
 729 int Paragraph::getPositionOfInset(InsetBase const * inset) const
 730 {
 731         // Find the entry.
 732         InsetList::const_iterator it = insetlist.begin();
 733         InsetList::const_iterator end = insetlist.end();
 734         for (; it != end; ++it)
 735                 if (it->inset == inset)
 736                         return it->pos;
 737         return -1;
 738 }
 739
 740
 741 InsetBibitem * Paragraph::bibitem() const
 742 {
 743         if (!insetlist.empty()) {
 744                 InsetBase * inset = insetlist.begin()->inset;
 745                 if (inset->lyxCode() == InsetBase::BIBITEM_CODE)
 746                         return static_cast<InsetBibitem *>(inset);
 747         }
 748         return 0;
 749 }
 750
 751
 752 bool Paragraph::forceDefaultParagraphs() const
 753 {
 754         return inInset() && inInset()->forceDefaultParagraphs(0);
 755 }
 756
 757
 758 namespace {
 759
 760 // paragraphs inside floats need different alignment tags to avoid
 761 // unwanted space
 762
 763 bool noTrivlistCentering(InsetBase::Code code)
 764 {
 765         return code == InsetBase::FLOAT_CODE || code == InsetBase::WRAP_CODE;
 766 }
 767
 768
 769 string correction(string const & orig)
 770 {
 771         if (orig == "flushleft")
 772                 return "raggedright";
 773         if (orig == "flushright")
 774                 return "raggedleft";
 775         if (orig == "center")
 776                 return "centering";
 777         return orig;
 778 }
 779
 780
 781 string const corrected_env(string const & suffix, string const & env,
 782         InsetBase::Code code)
 783 {
 784         string output = suffix + "{";
 785         if (noTrivlistCentering(code))
 786                 output += correction(env);
 787         else
 788                 output += env;
 789         output += "}";
 790         if (suffix == "\\begin")
 791                 output += "\n";
 792         return output;
 793 }
 794
 795
 796 void adjust_row_column(string const & str, TexRow & texrow, int & column)
 797 {
 798         if (!contains(str, "\n"))
 799                 column += str.size();
 800         else {
 801                 string tmp;
 802                 texrow.newline();
 803                 column = rsplit(str, tmp, '\n').size();
 804         }
 805 }
 806
 807 } // namespace anon
 808
 809
 810 // This could go to ParagraphParameters if we want to
 811 int Paragraph::startTeXParParams(BufferParams const & bparams,
 812                                  odocstream & os, TexRow & texrow,
 813                                  bool moving_arg) const
 814 {
 815         int column = 0;
 816
 817         if (params().noindent()) {
 818                 os << "\\noindent ";
 819                 column += 10;
 820         }
 821
 822         switch (params().align()) {
 823         case LYX_ALIGN_NONE:
 824         case LYX_ALIGN_BLOCK:
 825         case LYX_ALIGN_LAYOUT:
 826         case LYX_ALIGN_SPECIAL:
 827                 break;
 828         case LYX_ALIGN_LEFT:
 829         case LYX_ALIGN_RIGHT:
 830         case LYX_ALIGN_CENTER:
 831                 if (moving_arg) {
 832                         os << "\\protect";
 833                         column += 8;
 834                 }
 835                 break;
 836         }
 837
 838         switch (params().align()) {
 839         case LYX_ALIGN_NONE:
 840         case LYX_ALIGN_BLOCK:
 841         case LYX_ALIGN_LAYOUT:
 842         case LYX_ALIGN_SPECIAL:
 843                 break;
 844         case LYX_ALIGN_LEFT: {
 845                 string output;
 846                 if (getParLanguage(bparams)->babel() != "hebrew")
 847                         output = corrected_env("\\begin", "flushleft", ownerCode());
 848                 else
 849                         output = corrected_env("\\begin", "flushright", ownerCode());
 850                 os << from_ascii(output);
 851                 adjust_row_column(output, texrow, column);
 852                 break;
 853         } case LYX_ALIGN_RIGHT: {
 854                 string output;
 855                 if (getParLanguage(bparams)->babel() != "hebrew")
 856                         output = corrected_env("\\begin", "flushright", ownerCode());
 857                 else
 858                         output = corrected_env("\\begin", "flushleft", ownerCode());
 859                 os << from_ascii(output);
 860                 adjust_row_column(output, texrow, column);
 861                 break;
 862         } case LYX_ALIGN_CENTER: {
 863                 string output;
 864                 output = corrected_env("\\begin", "center", ownerCode());
 865                 os << from_ascii(output);
 866                 adjust_row_column(output, texrow, column);
 867                 break;
 868         }
 869         }
 870
 871         return column;
 872 }
 873
 874
 875 // This could go to ParagraphParameters if we want to
 876 int Paragraph::endTeXParParams(BufferParams const & bparams,
 877                                odocstream & os, TexRow & texrow,
 878                                bool moving_arg) const
 879 {
 880         int column = 0;
 881
 882         switch (params().align()) {
 883         case LYX_ALIGN_NONE:
 884         case LYX_ALIGN_BLOCK:
 885         case LYX_ALIGN_LAYOUT:
 886         case LYX_ALIGN_SPECIAL:
 887                 break;
 888         case LYX_ALIGN_LEFT:
 889         case LYX_ALIGN_RIGHT:
 890         case LYX_ALIGN_CENTER:
 891                 if (moving_arg) {
 892                         os << "\\protect";
 893                         column = 8;
 894                 }
 895                 break;
 896         }
 897
 898         switch (params().align()) {
 899         case LYX_ALIGN_NONE:
 900         case LYX_ALIGN_BLOCK:
 901         case LYX_ALIGN_LAYOUT:
 902         case LYX_ALIGN_SPECIAL:
 903                 break;
 904         case LYX_ALIGN_LEFT: {
 905                 string output;
 906                 if (getParLanguage(bparams)->babel() != "hebrew")
 907                         output = corrected_env("\n\\par\\end", "flushleft", ownerCode());
 908                 else
 909                         output = corrected_env("\n\\par\\end", "flushright", ownerCode());
 910                 os << from_ascii(output);
 911                 adjust_row_column(output, texrow, column);
 912                 break;
 913         } case LYX_ALIGN_RIGHT: {
 914                 string output;
 915                 if (getParLanguage(bparams)->babel() != "hebrew")
 916                         output = corrected_env("\n\\par\\end", "flushright", ownerCode());
 917                 else
 918                         output = corrected_env("\n\\par\\end", "flushleft", ownerCode());
 919                 os << from_ascii(output);
 920                 adjust_row_column(output, texrow, column);
 921                 break;
 922         } case LYX_ALIGN_CENTER: {
 923                 string output;
 924                 output = corrected_env("\n\\par\\end", "center", ownerCode());
 925                 os << from_ascii(output);
 926                 adjust_row_column(output, texrow, column);
 927                 break;
 928         }
 929         }
 930
 931         return column;
 932 }
 933
 934
 935 // This one spits out the text of the paragraph
 936 bool Paragraph::simpleTeXOnePar(Buffer const & buf,
 937                                 BufferParams const & bparams,
 938                                 LyXFont const & outerfont,
 939                                 odocstream & os, TexRow & texrow,
 940                                 OutputParams const & runparams) const
 941 {
 942         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...     " << this << endl;
 943
 944         bool return_value = false;
 945
 946         LyXLayout_ptr style;
 947
 948         // well we have to check if we are in an inset with unlimited
 949         // length (all in one row) if that is true then we don't allow
 950         // any special options in the paragraph and also we don't allow
 951         // any environment other than the default layout of the text class
 952         // to be valid!
 953         bool asdefault = forceDefaultParagraphs();
 954
 955         if (asdefault) {
 956                 style = bparams.getLyXTextClass().defaultLayout();
 957         } else {
 958                 style = layout();
 959         }
 960
 961         // Current base font for all inherited font changes, without any
 962         // change caused by an individual character, except for the language:
 963         // It is set to the language of the first character.
 964         // As long as we are in the label, this font is the base font of the
 965         // label. Before the first body character it is set to the base font
 966         // of the body.
 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
1013         for (pos_type i = 0; i < size(); ++i) {
1014                 // First char in paragraph or after label?
1015                 if (i == body_pos) {
1016                         if (body_pos > 0) {
1017                                 if (open_font) {
1018                                         column += running_font.latexWriteEndChanges(
1019                                                 os, basefont, basefont);
1020                                         open_font = false;
1021                                 }
1022                                 basefont = getLayoutFont(bparams, outerfont);
1023                                 running_font = basefont;
1024
1025                                 column += Changes::latexMarkChange(os,
1026                                                 runningChangeType, Change::UNCHANGED, output);
1027                                 runningChangeType = Change::UNCHANGED;
1028
1029                                 os << "}] ";
1030                                 column +=3;
1031                         }
1032                         if (style->isCommand()) {
1033                                 os << '{';
1034                                 ++column;
1035                         }
1036
1037                         if (!asdefault)
1038                                 column += startTeXParParams(bparams, os,
1039                                                             texrow,
1040                                                             runparams.moving_arg);
1041                 }
1042
1043                 Change::Type changeType = pimpl_->lookupChange(i).type;
1044
1045                 // do not output text which is marked deleted
1046                 // if change tracking output is disabled
1047                 if (!output && changeType == Change::DELETED) {
1048                         runningChangeType = changeType;
1049                         continue;
1050                 }
1051
1052                 ++column;
1053
1054                 column += Changes::latexMarkChange(os, runningChangeType,
1055                         changeType, output);
1056                 runningChangeType = changeType;
1057
1058                 value_type const c = getChar(i);
1059
1060                 // Fully instantiated font
1061                 LyXFont const font = getFont(bparams, i, outerfont);
1062
1063                 LyXFont const last_font = running_font;
1064
1065                 // Do we need to close the previous font?
1066                 if (open_font &&
1067                     (font != running_font ||
1068                      font.language() != running_font.language()))
1069                 {
1070                         column += running_font.latexWriteEndChanges(
1071                                         os, basefont,
1072                                         (i == body_pos-1) ? basefont : font);
1073                         running_font = basefont;
1074                         open_font = false;
1075                 }
1076
1077                 // Switch file encoding if necessary
1078                 int const count = switchEncoding(os, bparams,
1079                                 *(runparams.encoding),
1080                                 *(font.language()->encoding()));
1081                 if (count > 0) {
1082                         column += count;
1083                         runparams.encoding = font.language()->encoding();
1084                 }
1085
1086                 // Do we need to change font?
1087                 if ((font != running_font ||
1088                      font.language() != running_font.language()) &&
1089                         i != body_pos - 1)
1090                 {
1091                         column += font.latexWriteStartChanges(os, basefont,
1092                                                               last_font);
1093                         running_font = font;
1094                         open_font = true;
1095                 }
1096
1097                 if (c == ' ') {
1098                         // Do not print the separation of the optional argument
1099                         // if style->pass_thru is false. This works because
1100                         // simpleTeXSpecialChars ignores spaces if
1101                         // style->pass_thru is false.
1102                         if (i != body_pos - 1) {
1103                                 if (pimpl_->simpleTeXBlanks(bparams,
1104                                                 doc_encoding, os, texrow,
1105                                                 i, column, font, *style))
1106                                         // A surrogate pair was output. We
1107                                         // must not call simpleTeXSpecialChars
1108                                         // in this iteration, since
1109                                         // simpleTeXBlanks incremented i, and
1110                                         // simpleTeXSpecialChars would output
1111                                         // the combining character again.
1112                                         continue;
1113                         }
1114                 }
1115
1116                 OutputParams rp = runparams;
1117                 rp.free_spacing = style->free_spacing;
1118                 rp.local_font = &font;
1119                 rp.intitle = style->intitle;
1120                 pimpl_->simpleTeXSpecialChars(buf, bparams, doc_encoding, os,
1121                                         texrow, rp, running_font,
1122                                         basefont, outerfont, open_font,
1123                                         runningChangeType, *style, i, column, c);
1124         }
1125
1126         // If we have an open font definition, we have to close it
1127         if (open_font) {
1128 #ifdef FIXED_LANGUAGE_END_DETECTION
1129                 if (next_) {
1130                         running_font
1131                                 .latexWriteEndChanges(os, basefont,
1132                                         next_->getFont(bparams, 0, outerfont));
1133                 } else {
1134                         running_font.latexWriteEndChanges(os, basefont,
1135                                                           basefont);
1136                 }
1137 #else
1138 #ifdef WITH_WARNINGS
1139 //#warning For now we ALWAYS have to close the foreign font settings if they are
1140 //#warning there as we start another \selectlanguage with the next paragraph if
1141 //#warning we are in need of this. This should be fixed sometime (Jug)
1142 #endif
1143                 running_font.latexWriteEndChanges(os, basefont, basefont);
1144 #endif
1145         }
1146
1147         column += Changes::latexMarkChange(os,
1148                         runningChangeType, Change::UNCHANGED, output);
1149
1150         // Needed if there is an optional argument but no contents.
1151         if (body_pos > 0 && body_pos == size()) {
1152                 os << "}]~";
1153                 return_value = false;
1154         }
1155
1156         if (!asdefault) {
1157                 column += endTeXParParams(bparams, os, texrow,
1158                                           runparams.moving_arg);
1159         }
1160
1161         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...done " << this << endl;
1162         return return_value;
1163 }
1164
1165
1166 namespace {
1167
1168 enum PAR_TAG {
1169         PAR_NONE=0,
1170         TT = 1,
1171         SF = 2,
1172         BF = 4,
1173         IT = 8,
1174         SL = 16,
1175         EM = 32
1176 };
1177
1178
1179 string tag_name(PAR_TAG const & pt) {
1180         switch (pt) {
1181         case PAR_NONE: return "!-- --";
1182         case TT: return "tt";
1183         case SF: return "sf";
1184         case BF: return "bf";
1185         case IT: return "it";
1186         case SL: return "sl";
1187         case EM: return "em";
1188         }
1189         return "";
1190 }
1191
1192
1193 inline
1194 void operator|=(PAR_TAG & p1, PAR_TAG const & p2)
1195 {
1196         p1 = static_cast<PAR_TAG>(p1 | p2);
1197 }
1198
1199
1200 inline
1201 void reset(PAR_TAG & p1, PAR_TAG const & p2)
1202 {
1203         p1 = static_cast<PAR_TAG>(p1 & ~p2);
1204 }
1205
1206 } // anon
1207
1208
1209 bool Paragraph::emptyTag() const
1210 {
1211         for (pos_type i = 0; i < size(); ++i) {
1212                 if (isInset(i)) {
1213                         InsetBase const * inset = getInset(i);
1214                         InsetBase::Code lyx_code = inset->lyxCode();
1215                         if (lyx_code != InsetBase::TOC_CODE &&
1216                             lyx_code != InsetBase::INCLUDE_CODE &&
1217                             lyx_code != InsetBase::GRAPHICS_CODE &&
1218                             lyx_code != InsetBase::ERT_CODE &&
1219                             lyx_code != InsetBase::FLOAT_CODE &&
1220                             lyx_code != InsetBase::TABULAR_CODE) {
1221                                 return false;
1222                         }
1223                 } else {
1224                         value_type c = getChar(i);
1225                         if (c != ' ' && c != '\t')
1226                                 return false;
1227                 }
1228         }
1229         return true;
1230 }
1231
1232
1233 string Paragraph::getID(Buffer const & buf, OutputParams const & runparams) const
1234 {
1235         for (pos_type i = 0; i < size(); ++i) {
1236                 if (isInset(i)) {
1237                         InsetBase const * inset = getInset(i);
1238                         InsetBase::Code lyx_code = inset->lyxCode();
1239                         if (lyx_code == InsetBase::LABEL_CODE) {
1240                                 string const id = static_cast<InsetCommand const *>(inset)->getContents();
1241                                 return "id='" + to_utf8(sgml::cleanID(buf, runparams, from_utf8(id))) + "'";
1242                         }
1243                 }
1244
1245         }
1246         return string();
1247 }
1248
1249
1250 pos_type Paragraph::getFirstWord(Buffer const & buf, odocstream & os, OutputParams const & runparams) const
1251 {
1252         pos_type i;
1253         for (i = 0; i < size(); ++i) {
1254                 if (isInset(i)) {
1255                         InsetBase const * inset = getInset(i);
1256                         inset->docbook(buf, os, runparams);
1257                 } else {
1258                         value_type c = getChar(i);
1259                         if (c == ' ')
1260                                 break;
1261                         os << sgml::escapeChar(c);
1262                 }
1263         }
1264         return i;
1265 }
1266
1267
1268 bool Paragraph::onlyText(Buffer const & buf, LyXFont const & outerfont, pos_type initial) const
1269 {
1270         LyXFont font_old;
1271
1272         for (pos_type i = initial; i < size(); ++i) {
1273                 LyXFont font = getFont(buf.params(), i, outerfont);
1274                 if (isInset(i))
1275                         return false;
1276                 if (i != initial && font != font_old)
1277                         return false;
1278                 font_old = font;
1279         }
1280
1281         return true;
1282 }
1283
1284
1285 void Paragraph::simpleDocBookOnePar(Buffer const & buf,
1286                                     odocstream & os,
1287                                     OutputParams const & runparams,
1288                                     LyXFont const & outerfont,
1289                                     pos_type initial) const
1290 {
1291         bool emph_flag = false;
1292
1293         LyXLayout_ptr const & style = layout();
1294         LyXFont font_old =
1295                 style->labeltype == LABEL_MANUAL ? style->labelfont : style->font;
1296
1297         if (style->pass_thru && !onlyText(buf, outerfont, initial))
1298                 os << "]]>";
1299
1300         // parsing main loop
1301         for (pos_type i = initial; i < size(); ++i) {
1302                 LyXFont font = getFont(buf.params(), i, outerfont);
1303
1304                 // handle <emphasis> tag
1305                 if (font_old.emph() != font.emph()) {
1306                         if (font.emph() == LyXFont::ON) {
1307                                 os << "<emphasis>";
1308                                 emph_flag = true;
1309                         } else if (i != initial) {
1310                                 os << "</emphasis>";
1311                                 emph_flag = false;
1312                         }
1313                 }
1314
1315                 if (isInset(i)) {
1316                         InsetBase const * inset = getInset(i);
1317                         inset->docbook(buf, os, runparams);
1318                 } else {
1319                         value_type c = getChar(i);
1320
1321                         if (style->pass_thru)
1322                                 os.put(c);
1323                         else
1324                                 os << sgml::escapeChar(c);
1325                 }
1326                 font_old = font;
1327         }
1328
1329         if (emph_flag) {
1330                 os << "</emphasis>";
1331         }
1332
1333         if (style->free_spacing)
1334                 os << '\n';
1335         if (style->pass_thru && !onlyText(buf, outerfont, initial))
1336                 os << "<![CDATA[";
1337 }
1338
1339
1340 bool Paragraph::isNewline(pos_type pos) const
1341 {
1342         return isInset(pos)
1343                 && getInset(pos)->lyxCode() == InsetBase::NEWLINE_CODE;
1344 }
1345
1346
1347 bool Paragraph::isLineSeparator(pos_type pos) const
1348 {
1349         value_type const c = getChar(pos);
1350         return isLineSeparatorChar(c)
1351                 || (c == Paragraph::META_INSET && getInset(pos) &&
1352                 getInset(pos)->isLineSeparator());
1353 }
1354
1355
1356 /// Used by the spellchecker
1357 bool Paragraph::isLetter(pos_type pos) const
1358 {
1359         if (isInset(pos))
1360                 return getInset(pos)->isLetter();
1361         else {
1362                 value_type const c = getChar(pos);
1363                 return isLetterChar(c) || isDigit(c);
1364         }
1365 }
1366
1367
1368 Language const *
1369 Paragraph::getParLanguage(BufferParams const & bparams) const
1370 {
1371         if (!empty())
1372                 return getFirstFontSettings(bparams).language();
1373 #ifdef WITH_WARNINGS
1374 #warning FIXME we should check the prev par as well (Lgb)
1375 #endif
1376         return bparams.language;
1377 }
1378
1379
1380 bool Paragraph::isRightToLeftPar(BufferParams const & bparams) const
1381 {
1382         return lyxrc.rtl_support
1383                 && getParLanguage(bparams)->rightToLeft()
1384                 && ownerCode() != InsetBase::ERT_CODE;
1385 }
1386
1387
1388 void Paragraph::changeLanguage(BufferParams const & bparams,
1389                                Language const * from, Language const * to)
1390 {
1391         // change language including dummy font change at the end
1392         for (pos_type i = 0; i <= size(); ++i) {
1393                 LyXFont font = getFontSettings(bparams, i);
1394                 if (font.language() == from) {
1395                         font.setLanguage(to);
1396                         setFont(i, font);
1397                 }
1398         }
1399 }
1400
1401
1402 bool Paragraph::isMultiLingual(BufferParams const & bparams) const
1403 {
1404         Language const * doc_language = bparams.language;
1405         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
1406         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
1407
1408         for (; cit != end; ++cit)
1409                 if (cit->font().language() != ignore_language &&
1410                     cit->font().language() != latex_language &&
1411                     cit->font().language() != doc_language)
1412                         return true;
1413         return false;
1414 }
1415
1416
1417 // Convert the paragraph to a string.
1418 // Used for building the table of contents
1419 docstring const Paragraph::asString(Buffer const & buffer, bool label) const
1420 {
1421         return asString(buffer, 0, size(), label);
1422 }
1423
1424
1425 docstring const Paragraph::asString(Buffer const & buffer,
1426                                  pos_type beg, pos_type end, bool label) const
1427 {
1428
1429         odocstringstream os;
1430
1431         if (beg == 0 && label && !params().labelString().empty())
1432                 os << params().labelString() << ' ';
1433
1434         for (pos_type i = beg; i < end; ++i) {
1435                 value_type const c = getUChar(buffer.params(), i);
1436                 if (isPrintable(c))
1437                         os.put(c);
1438                 else if (c == META_INSET)
1439                         getInset(i)->textString(buffer, os);
1440         }
1441
1442         return os.str();
1443 }
1444
1445
1446 void Paragraph::setInsetOwner(InsetBase * inset)
1447 {
1448         pimpl_->inset_owner = inset;
1449 }
1450
1451
1452 Change const & Paragraph::lookupChange(pos_type pos) const
1453 {
1454         BOOST_ASSERT(pos <= size());
1455         return pimpl_->lookupChange(pos);
1456 }
1457
1458
1459 bool Paragraph::isChanged(pos_type start, pos_type end) const
1460 {
1461         return pimpl_->isChanged(start, end);
1462 }
1463
1464
1465 bool Paragraph::isMergedOnEndOfParDeletion(bool trackChanges) const
1466 {
1467         return pimpl_->isMergedOnEndOfParDeletion(trackChanges);
1468 }
1469
1470
1471 void Paragraph::setChange(Change const & change)
1472 {
1473         pimpl_->setChange(change);
1474 }
1475
1476
1477 void Paragraph::setChange(pos_type pos, Change const & change)
1478 {
1479         pimpl_->setChange(pos, change);
1480 }
1481
1482
1483 void Paragraph::acceptChanges(BufferParams const & bparams, pos_type start, pos_type end)
1484 {
1485         return pimpl_->acceptChanges(bparams, start, end);
1486 }
1487
1488
1489 void Paragraph::rejectChanges(BufferParams const & bparams, pos_type start, pos_type end)
1490 {
1491         return pimpl_->rejectChanges(bparams, start, end);
1492 }
1493
1494
1495 int Paragraph::id() const
1496 {
1497         return pimpl_->id_;
1498 }
1499
1500
1501 LyXLayout_ptr const & Paragraph::layout() const
1502 {
1503         return layout_;
1504 }
1505
1506
1507 void Paragraph::layout(LyXLayout_ptr const & new_layout)
1508 {
1509         layout_ = new_layout;
1510 }
1511
1512
1513 InsetBase * Paragraph::inInset() const
1514 {
1515         return pimpl_->inset_owner;
1516 }
1517
1518
1519 InsetBase::Code Paragraph::ownerCode() const
1520 {
1521         return pimpl_->inset_owner
1522                 ? pimpl_->inset_owner->lyxCode() : InsetBase::NO_CODE;
1523 }
1524
1525
1526 ParagraphParameters & Paragraph::params()
1527 {
1528         return pimpl_->params;
1529 }
1530
1531
1532 ParagraphParameters const & Paragraph::params() const
1533 {
1534         return pimpl_->params;
1535 }
1536
1537
1538 bool Paragraph::isFreeSpacing() const
1539 {
1540         if (layout()->free_spacing)
1541                 return true;
1542
1543         // for now we just need this, later should we need this in some
1544         // other way we can always add a function to InsetBase too.
1545         return ownerCode() == InsetBase::ERT_CODE;
1546 }
1547
1548
1549 bool Paragraph::allowEmpty() const
1550 {
1551         if (layout()->keepempty)
1552                 return true;
1553         return ownerCode() == InsetBase::ERT_CODE;
1554 }
1555
1556
1557 char_type Paragraph::transformChar(char_type c, pos_type pos) const
1558 {
1559         if (!Encodings::is_arabic(c))
1560                 if (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 && isDigit(c))
1561                         // FIXME UNICODE What does this do?
1562                         return c + (0xb0 - '0');
1563                 else
1564                         return c;
1565
1566         value_type const prev_char = pos > 0 ? getChar(pos - 1) : ' ';
1567         value_type next_char = ' ';
1568
1569         for (pos_type i = pos + 1, end = size(); i < end; ++i) {
1570                 value_type const par_char = getChar(i);
1571                 if (!Encodings::isComposeChar_arabic(par_char)) {
1572                         next_char = par_char;
1573                         break;
1574                 }
1575         }
1576
1577         if (Encodings::is_arabic(next_char)) {
1578                 if (Encodings::is_arabic(prev_char) &&
1579                         !Encodings::is_arabic_special(prev_char))
1580                         return Encodings::transformChar(c, Encodings::FORM_MEDIAL);
1581                 else
1582                         return Encodings::transformChar(c, Encodings::FORM_INITIAL);
1583         } else {
1584                 if (Encodings::is_arabic(prev_char) &&
1585                         !Encodings::is_arabic_special(prev_char))
1586                         return Encodings::transformChar(c, Encodings::FORM_FINAL);
1587                 else
1588                         return Encodings::transformChar(c, Encodings::FORM_ISOLATED);
1589         }
1590 }
1591
1592
1593 bool Paragraph::hfillExpansion(Row const & row, pos_type pos) const
1594 {
1595         if (!isHfill(pos))
1596                 return false;
1597
1598         BOOST_ASSERT(pos >= row.pos() && pos < row.endpos());
1599
1600         // expand at the end of a row only if there is another hfill on the same row
1601         if (pos == row.endpos() - 1) {
1602                 for (pos_type i = row.pos(); i < pos; i++) {
1603                         if (isHfill(i))
1604                                 return true;
1605                 }
1606                 return false;
1607         }
1608
1609         // expand at the beginning of a row only if it is the first row of a paragraph
1610         if (pos == row.pos()) {
1611                 return pos == 0;
1612         }
1613
1614         // do not expand in some labels
1615         if (layout()->margintype != MARGIN_MANUAL && pos < beginOfBody())
1616                 return false;
1617
1618         // if there is anything between the first char of the row and
1619         // the specified position that is neither a newline nor an hfill,
1620         // the hfill will be expanded, otherwise it won't
1621         for (pos_type i = row.pos(); i < pos; i++) {
1622                 if (!isNewline(i) && !isHfill(i))
1623                         return true;
1624         }
1625         return false;
1626 }
1627
1628
1629 bool Paragraph::checkBiblio(bool track_changes)
1630 {
1631         // Add bibitem insets if necessary
1632         if (layout()->labeltype != LABEL_BIBLIO)
1633                 return false;
1634
1635         bool hasbibitem = !insetlist.empty()
1636                 // Insist on it being in pos 0
1637                 && getChar(0) == Paragraph::META_INSET
1638                 && insetlist.begin()->inset->lyxCode() == InsetBase::BIBITEM_CODE;
1639
1640         if (hasbibitem)
1641                 return false;
1642
1643         InsetBibitem * inset(new InsetBibitem(InsetCommandParams("bibitem")));
1644         insertInset(0, static_cast<InsetBase *>(inset),
1645                 Change(track_changes ? Change::INSERTED : Change::UNCHANGED));
1646
1647         return true;
1648 }
1649
1650 } // namespace lyx