src/factory.cpp

   1 /**
   2  * \file factory.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author André Pönitz
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "factory.h"
  14
  15 #include "Buffer.h"
  16 #include "BufferParams.h"
  17 #include "FloatList.h"
  18 #include "FuncRequest.h"
  19 #include "Lexer.h"
  20 #include "LyX.h"
  21 #include "TextClass.h"
  22
  23 #include "insets/InsetBibitem.h"
  24 #include "insets/InsetBibtex.h"
  25 #include "insets/InsetBox.h"
  26 #include "insets/InsetBranch.h"
  27 #include "insets/InsetCaption.h"
  28 #include "insets/InsetCitation.h"
  29 #include "insets/InsetFlex.h"
  30 #include "insets/InsetERT.h"
  31 #include "insets/InsetListings.h"
  32 #include "insets/InsetExternal.h"
  33 #include "insets/InsetFloat.h"
  34 #include "insets/InsetFloatList.h"
  35 #include "insets/InsetFoot.h"
  36 #include "insets/InsetGraphics.h"
  37 #include "insets/InsetHyperlink.h"
  38 #include "insets/InsetInclude.h"
  39 #include "insets/InsetIndex.h"
  40 #include "insets/InsetInfo.h"
  41 #include "insets/InsetLabel.h"
  42 #include "insets/InsetLine.h"
  43 #include "insets/InsetMarginal.h"
  44 #include "insets/InsetNewline.h"
  45 #include "insets/InsetNewpage.h"
  46 #include "insets/InsetNomencl.h"
  47 #include "insets/InsetNote.h"
  48 #include "insets/InsetArgument.h"
  49 #include "insets/InsetPhantom.h"
  50 #include "insets/InsetPreview.h"
  51 #include "insets/InsetRef.h"
  52 #include "insets/InsetScript.h"
  53 #include "insets/InsetSpace.h"
  54 #include "insets/InsetTabular.h"
  55 #include "insets/InsetTOC.h"
  56 #include "insets/InsetVSpace.h"
  57 #include "insets/InsetWrap.h"
  58
  59 #include "mathed/MathMacroTemplate.h"
  60 #include "mathed/InsetMathHull.h"
  61
  62 #include "frontends/alert.h"
  63
  64 #include "support/debug.h"
  65 #include "support/lstrings.h"
  66 #include "support/ExceptionMessage.h"
  67
  68 #include "support/lassert.h"
  69
  70 #include <sstream>
  71
  72 using namespace std;
  73 using namespace lyx::support;
  74
  75 namespace lyx {
  76
  77 namespace Alert = frontend::Alert;
  78
  79
  80 Inset * createInsetHelper(Buffer * buf, FuncRequest const & cmd)
  81 {
  82         try {
  83
  84                 switch (cmd.action()) {
  85
  86                 case LFUN_NEWPAGE_INSERT: {
  87                         string const name = cmd.getArg(0);
  88                         InsetNewpageParams inp;
  89                         if (name.empty() || name == "newpage")
  90                                 inp.kind = InsetNewpageParams::NEWPAGE;
  91                         else if (name == "pagebreak")
  92                                 inp.kind = InsetNewpageParams::PAGEBREAK;
  93                         else if (name == "clearpage")
  94                                 inp.kind = InsetNewpageParams::CLEARPAGE;
  95                         else if (name == "cleardoublepage")
  96                                 inp.kind = InsetNewpageParams::CLEARDOUBLEPAGE;
  97                         return new InsetNewpage(inp);
  98                 }
  99
 100                 case LFUN_FLEX_INSERT: {
 101                         string s = cmd.getArg(0);
 102                         return new InsetFlex(buf, s);
 103                 }
 104
 105                 case LFUN_NOTE_INSERT: {
 106                         string arg = cmd.getArg(0);
 107                         if (arg.empty())
 108                                 arg = "Note";
 109                         return new InsetNote(buf, arg);
 110                 }
 111
 112                 case LFUN_BOX_INSERT: {
 113                         string arg = cmd.getArg(0);
 114                         if (arg.empty())
 115                                 arg = "Boxed";
 116                         return new InsetBox(buf, arg);
 117                 }
 118
 119                 case LFUN_BRANCH_INSERT: {
 120                         docstring arg = cmd.argument();
 121                         if (arg.empty())
 122                                 arg = from_ascii("none");
 123                         return new InsetBranch(buf, InsetBranchParams(arg));
 124                 }
 125
 126                 case LFUN_PHANTOM_INSERT: {
 127                         string arg = cmd.getArg(0);
 128                         if (arg.empty())
 129                                 arg = "Phantom";
 130                         return new InsetPhantom(buf, arg);
 131                 }
 132
 133                 case LFUN_ERT_INSERT:
 134                         return new InsetERT(buf);
 135
 136                 case LFUN_LISTING_INSERT:
 137                         return new InsetListings(buf);
 138
 139                 case LFUN_FOOTNOTE_INSERT:
 140                         return new InsetFoot(buf);
 141
 142                 case LFUN_MARGINALNOTE_INSERT:
 143                         return new InsetMarginal(buf);
 144
 145                 case LFUN_ARGUMENT_INSERT:
 146                         return new InsetArgument(buf);
 147
 148                 case LFUN_FLOAT_INSERT: {
 149                         string argument = to_utf8(cmd.argument());
 150                         if (!argument.empty()) {
 151                                 if (!contains(argument, "sideways")) {
 152                                         if (!contains(argument, "wide"))
 153                                                 argument += "\nwide false";
 154                                         argument += "\nsideways false";
 155                                 }
 156                         }
 157                         return new InsetFloat(buf, argument);
 158                 }
 159
 160                 case LFUN_FLOAT_WIDE_INSERT: {
 161                         string argument = to_utf8(cmd.argument());
 162                         if (!argument.empty()) {
 163                                 if (!contains(argument, "sideways")) {
 164                                         if (!contains(argument, "wide"))
 165                                                 argument += "\nwide true";
 166                                         argument += "\nsideways false";
 167                                 }
 168                         }
 169                         InsetFloat * fl = new InsetFloat(buf, argument);
 170                         fl->setWide(true);
 171                         return fl;
 172                 }
 173
 174                 case LFUN_WRAP_INSERT: {
 175                         string const argument = to_utf8(cmd.argument());
 176                         if (argument == "figure" || argument == "table")
 177                                 return new InsetWrap(buf, argument);
 178                         lyxerr << "Non-existent wrapfig type: " << argument << endl;
 179                         return 0;
 180                 }
 181
 182                 case LFUN_INDEX_INSERT: {
 183                         docstring arg = cmd.argument();
 184                         return new InsetIndex(buf, InsetIndexParams(arg));
 185                 }
 186
 187                 case LFUN_NOMENCL_INSERT: {
 188                         InsetCommandParams icp(NOMENCL_CODE);
 189                         icp["symbol"] = cmd.argument();
 190                         return new InsetNomencl(buf, icp);
 191                 }
 192
 193                 case LFUN_TABULAR_INSERT: {
 194                         if (cmd.argument().empty())
 195                                 return 0;
 196                         istringstream ss(to_utf8(cmd.argument()));
 197                         int r = 0, c = 0;
 198                         ss >> r >> c;
 199                         if (r <= 0)
 200                                 r = 2;
 201                         if (c <= 0)
 202                                 c = 2;
 203                         return new InsetTabular(buf, r, c);
 204                 }
 205
 206                 case LFUN_CAPTION_INSERT:
 207                         return new InsetCaption(buf);
 208
 209                 case LFUN_INDEX_PRINT:  {
 210                         InsetCommandParams icp(INDEX_PRINT_CODE);
 211                         icp["type"] = cmd.argument();
 212                         return new InsetPrintIndex(buf, icp);
 213                 }
 214
 215                 case LFUN_NOMENCL_PRINT: {
 216                         InsetCommandParams icp(NOMENCL_PRINT_CODE);
 217                         icp["set_width"] = from_ascii("auto");
 218                         return new InsetPrintNomencl(buf, icp);
 219                 }
 220
 221                 case LFUN_INFO_INSERT: {
 222                         InsetInfo * inset = new InsetInfo(buf, to_utf8(cmd.argument()));
 223                         inset->updateInfo();
 224                         return inset;
 225                 }
 226
 227                 case LFUN_PREVIEW_INSERT:
 228                         return new InsetPreview(buf);
 229
 230                 case LFUN_SCRIPT_INSERT: {
 231                         InsetScriptParams isp;
 232                         InsetScript::string2params("script script " + to_utf8(cmd.argument()), isp);
 233                         return new InsetScript(buf, isp);
 234                 }
 235
 236                 case LFUN_INSET_INSERT: {
 237                         string const name = cmd.getArg(0);
 238                         InsetCode code = insetCode(name);
 239                         switch (code) {
 240                         case NO_CODE:
 241                                 lyxerr << "No such inset '" << name << "'.";
 242                                 return 0;
 243
 244                         case BIBITEM_CODE: {
 245                                 InsetCommandParams icp(code);
 246                                 InsetCommand::string2params(to_utf8(cmd.argument()), icp);
 247                                 return new InsetBibitem(buf, icp);
 248                         }
 249
 250                         case BIBTEX_CODE: {
 251                                 InsetCommandParams icp(code);
 252                                 InsetCommand::string2params(to_utf8(cmd.argument()), icp);
 253                                 return new InsetBibtex(buf, icp);
 254                         }
 255
 256                         case CITE_CODE: {
 257                                 InsetCommandParams icp(code);
 258                                 InsetCommand::string2params(to_utf8(cmd.argument()), icp);
 259                                 return new InsetCitation(buf, icp);
 260                         }
 261
 262                         case ERT_CODE: {
 263                                 return new InsetERT(buf,
 264                                         InsetERT::string2params(to_utf8(cmd.argument())));
 265                         }
 266
 267                         case EXTERNAL_CODE: {
 268                                 InsetExternalParams iep;
 269                                 InsetExternal::string2params(to_utf8(cmd.argument()), *buf, iep);
 270                                 auto_ptr<InsetExternal> inset(new InsetExternal(buf));
 271                                 inset->setBuffer(*buf);
 272                                 inset->setParams(iep);
 273                                 return inset.release();
 274                         }
 275
 276                         case GRAPHICS_CODE: {
 277                                 InsetGraphicsParams igp;
 278                                 InsetGraphics::string2params(to_utf8(cmd.argument()), *buf, igp);
 279                                 auto_ptr<InsetGraphics> inset(new InsetGraphics(buf));
 280                                 inset->setParams(igp);
 281                                 return inset.release();
 282                         }
 283
 284                         case HYPERLINK_CODE: {
 285                                 InsetCommandParams icp(code);
 286                                 InsetCommand::string2params(to_utf8(cmd.argument()), icp);
 287                                 return new InsetHyperlink(buf, icp);
 288                         }
 289
 290                         case INCLUDE_CODE: {
 291                                 InsetCommandParams icp(code);
 292                                 InsetCommand::string2params(to_utf8(cmd.argument()), icp);
 293                                 return new InsetInclude(buf, icp);
 294                         }
 295
 296                         case INDEX_CODE: {
 297                                 docstring arg = cmd.argument();
 298                                 return new InsetIndex(buf, InsetIndexParams(arg));
 299                         }
 300
 301                         case INDEX_PRINT_CODE:  {
 302                                 InsetCommandParams icp(code);
 303                                 InsetCommand::string2params(to_utf8(cmd.argument()), icp);
 304                                 return new InsetPrintIndex(buf, icp);
 305                         }
 306
 307                         case LABEL_CODE: {
 308                                 InsetCommandParams icp(code);
 309                                 InsetCommand::string2params(to_utf8(cmd.argument()), icp);
 310                                 return new InsetLabel(buf, icp);
 311                         }
 312
 313                         case LINE_CODE: {
 314                                 InsetCommandParams icp(code);
 315                                 InsetCommand::string2params(to_utf8(cmd.argument()), icp);
 316                                 return new InsetLine(buf, icp);
 317                         }
 318
 319                         case LISTINGS_CODE: {
 320                                 InsetListingsParams par;
 321                                 InsetListings::string2params(to_utf8(cmd.argument()), par);
 322                                 return new InsetListings(buf, par);
 323                         }
 324
 325                         case NOMENCL_CODE: {
 326                                 InsetCommandParams icp(code);
 327                                 InsetCommand::string2params(to_utf8(cmd.argument()), icp);
 328                                 return new InsetNomencl(buf, icp);
 329                         }
 330
 331                         case REF_CODE: {
 332                                 InsetCommandParams icp(code);
 333                                 InsetCommand::string2params(to_utf8(cmd.argument()), icp);
 334                                 return new InsetRef(buf, icp);
 335                         }
 336
 337                         case SCRIPT_CODE: {
 338                                 InsetScriptParams isp;
 339                                 InsetScript::string2params(to_utf8(cmd.argument()), isp);
 340                                 return new InsetScript(buf, isp);
 341                         }
 342
 343                         case SPACE_CODE: {
 344                                 InsetSpaceParams isp;
 345                                 InsetSpace::string2params(to_utf8(cmd.argument()), isp);
 346                                 return new InsetSpace(isp);
 347                         }
 348
 349                         case TOC_CODE: {
 350                                 InsetCommandParams icp(code);
 351                                 InsetCommand::string2params(to_utf8(cmd.argument()), icp);
 352                                 return new InsetTOC(buf, icp);
 353                         }
 354
 355                         case VSPACE_CODE: {
 356                                 VSpace vspace;
 357                                 InsetVSpace::string2params(to_utf8(cmd.argument()), vspace);
 358                                 return new InsetVSpace(vspace);
 359                         }
 360
 361                         case PREVIEW_CODE:
 362                                 return new InsetPreview(buf);
 363
 364                         default:
 365                                 lyxerr << "Inset '" << name << "' not permitted with LFUN_INSET_INSERT."
 366                                                 << endl;
 367                                 return 0;
 368
 369                         }
 370                 } //end LFUN_INSET_INSERT
 371
 372                 case LFUN_SPACE_INSERT: {
 373                         string const name = cmd.getArg(0);
 374                         string const len = cmd.getArg(1);
 375                         if (name.empty()) {
 376                                 lyxerr << "LyX function 'space-insert' needs an argument." << endl;
 377                                 break;
 378                         }
 379                         InsetSpaceParams isp;
 380                         // The tests for isp.math might be disabled after a file format change
 381                         if (name == "normal")
 382                                 isp.kind = InsetSpaceParams::NORMAL;
 383                         else if (name == "protected")
 384                                 isp.kind = InsetSpaceParams::PROTECTED;
 385                         else if (name == "visible")
 386                                 isp.kind = InsetSpaceParams::VISIBLE;
 387                         else if (name == "thin")
 388                                 isp.kind = InsetSpaceParams::THIN;
 389                         else if (isp.math && name == "med")
 390                                 isp.kind = InsetSpaceParams::MEDIUM;
 391                         else if (isp.math && name == "thick")
 392                                 isp.kind = InsetSpaceParams::THICK;
 393                         else if (name == "quad")
 394                                 isp.kind = InsetSpaceParams::QUAD;
 395                         else if (name == "qquad")
 396                                 isp.kind = InsetSpaceParams::QQUAD;
 397                         else if (name == "enspace")
 398                                 isp.kind = InsetSpaceParams::ENSPACE;
 399                         else if (name == "enskip")
 400                                 isp.kind = InsetSpaceParams::ENSKIP;
 401                         else if (name == "negthinspace")
 402                                 isp.kind = InsetSpaceParams::NEGTHIN;
 403                         else if (name == "negmedspace")
 404                                 isp.kind = InsetSpaceParams::NEGMEDIUM;
 405                         else if (name == "negthickspace")
 406                                 isp.kind = InsetSpaceParams::NEGTHICK;
 407                         else if (name == "hfill")
 408                                 isp.kind = InsetSpaceParams::HFILL;
 409                         else if (name == "hfill*")
 410                                 isp.kind = InsetSpaceParams::HFILL_PROTECTED;
 411                         else if (name == "dotfill")
 412                                 isp.kind = InsetSpaceParams::DOTFILL;
 413                         else if (name == "hrulefill")
 414                                 isp.kind = InsetSpaceParams::HRULEFILL;
 415                         else if (name == "hspace") {
 416                                 if (len.empty() || !isValidGlueLength(len)) {
 417                                         lyxerr << "LyX function 'space-insert hspace' "
 418                                                << "needs a valid length argument." << endl;
 419                                         break;
 420                                 }
 421                                 isp.kind = InsetSpaceParams::CUSTOM;
 422                                 isp.length = GlueLength(len);
 423                         }
 424                         else if (name == "hspace*") {
 425                                 if (len.empty() || !isValidGlueLength(len)) {
 426                                         lyxerr << "LyX function 'space-insert hspace*' "
 427                                                << "needs a valid length argument." << endl;
 428                                         break;
 429                                 }
 430                                 isp.kind = InsetSpaceParams::CUSTOM_PROTECTED;
 431                                 isp.length = GlueLength(len);
 432                         }
 433                         else {
 434                                 lyxerr << "Wrong argument for LyX function 'space-insert'." << endl;
 435                                 break;
 436                         }
 437                         return new InsetSpace(isp);
 438                 }
 439                 break;
 440
 441                 default:
 442                         break;
 443                 }
 444
 445         } catch (ExceptionMessage const & message) {
 446                 if (message.type_ == ErrorException) {
 447                         // This should never happen!
 448                         Alert::error(message.title_, message.details_);
 449                         lyx_exit(1);
 450                 } else if (message.type_ == WarningException) {
 451                         Alert::warning(message.title_, message.details_);
 452                         return 0;
 453                 }
 454         }
 455
 456         return 0;
 457 }
 458
 459
 460 Inset * createInset(Buffer * buf, FuncRequest const & cmd)
 461 {
 462         Inset * inset = createInsetHelper(buf, cmd);
 463         if (inset)
 464                 inset->setBuffer(*buf);
 465         return inset;
 466 }
 467
 468
 469 Inset * readInset(Lexer & lex, Buffer * buf)
 470 {
 471         // consistency check
 472         if (lex.getString() != "\\begin_inset")
 473                 LYXERR0("Buffer::readInset: Consistency check failed.");
 474
 475         auto_ptr<Inset> inset;
 476
 477         string tmptok;
 478         lex >> tmptok;
 479
 480         // test the different insets
 481
 482         // FIXME It would be better if we did not have this branch and could
 483         // just do one massive switch for all insets. But at present, it's
 484         // easier to do it this way, and we can't do the massive switch until
 485         // the conversion mentioned below.  Note that if we do want to do a
 486         // single switch, we need to remove this "CommandInset" line---or
 487         // replace it with a single "InsetType" line that would be used in all
 488         // insets.
 489         if (tmptok == "CommandInset") {
 490                 lex.next();
 491                 string const insetType = lex.getString();
 492                 lex.pushToken(insetType);
 493
 494                 InsetCode const code = insetCode(insetType);
 495
 496                 //FIXME If we do the one massive switch, we cannot do this here, since
 497                 //we do not know in advance that we're dealing with a command inset.
 498                 //Worst case, we could put it in each case below. Better, we could
 499                 //pass the lexer to the constructor and let the params be built there.
 500                 InsetCommandParams inscmd(code);
 501                 inscmd.read(lex);
 502
 503                 switch (code) {
 504                         case BIBITEM_CODE:
 505                                 inset.reset(new InsetBibitem(buf, inscmd));
 506                                 break;
 507                         case BIBTEX_CODE:
 508                                 inset.reset(new InsetBibtex(buf, inscmd));
 509                                 break;
 510                         case CITE_CODE:
 511                                 inset.reset(new InsetCitation(buf, inscmd));
 512                                 break;
 513                         case HYPERLINK_CODE:
 514                                 inset.reset(new InsetHyperlink(buf, inscmd));
 515                                 break;
 516                         case INCLUDE_CODE:
 517                                 inset.reset(new InsetInclude(buf, inscmd));
 518                                 break;
 519                         case INDEX_PRINT_CODE:
 520                                 inset.reset(new InsetPrintIndex(buf, inscmd));
 521                                 break;
 522                         case LABEL_CODE:
 523                                 inset.reset(new InsetLabel(buf, inscmd));
 524                                 break;
 525                         case LINE_CODE:
 526                                 inset.reset(new InsetLine(buf, inscmd));
 527                                 break;
 528                         case NOMENCL_CODE:
 529                                 inset.reset(new InsetNomencl(buf, inscmd));
 530                                 break;
 531                         case NOMENCL_PRINT_CODE:
 532                                 inset.reset(new InsetPrintNomencl(buf, inscmd));
 533                                 break;
 534                         case REF_CODE:
 535                                 if (inscmd["name"].empty() && inscmd["reference"].empty())
 536                                         return 0;
 537                                 inset.reset(new InsetRef(buf, inscmd));
 538                                 break;
 539                         case TOC_CODE:
 540                                 inset.reset(new InsetTOC(buf, inscmd));
 541                                 break;
 542                         case NO_CODE:
 543                         default:
 544                                 lyxerr << "unknown CommandInset '" << insetType
 545                                                         << "'" << endl;
 546                                 while (lex.isOK() && lex.getString() != "\\end_inset")
 547                                         lex.next();
 548                                 return 0;
 549                 }
 550                 inset->setBuffer(*buf);
 551         } else {
 552                 // FIXME This branch should be made to use inset codes as the preceding
 553                 // branch does. Unfortunately, that will take some doing. It requires
 554                 // converting the representation of the insets in LyX files so that they
 555                 // use the inset names listed in Inset.cpp. Then, as above, the inset names
 556                 // can be translated to inset codes using insetCode(). And the insets'
 557                 // write() routines should use insetName() rather than hardcoding it.
 558                 if (tmptok == "Quotes") {
 559                         inset.reset(new InsetQuotes(buf));
 560                 } else if (tmptok == "External") {
 561                         inset.reset(new InsetExternal(buf));
 562                 } else if (tmptok == "FormulaMacro") {
 563                         inset.reset(new MathMacroTemplate(buf));
 564                 } else if (tmptok == "Formula") {
 565                         inset.reset(new InsetMathHull(buf));
 566                 } else if (tmptok == "Graphics") {
 567                         inset.reset(new InsetGraphics(buf));
 568                 } else if (tmptok == "Note") {
 569                         inset.reset(new InsetNote(buf, tmptok));
 570                 } else if (tmptok == "Box") {
 571                         inset.reset(new InsetBox(buf, tmptok));
 572                 } else if (tmptok == "Flex") {
 573                         lex.eatLine();
 574                         string s = lex.getString();
 575                         inset.reset(new InsetFlex(buf, s));
 576                 } else if (tmptok == "Branch") {
 577                         inset.reset(new InsetBranch(buf, InsetBranchParams()));
 578                 } else if (tmptok == "Phantom") {
 579                         inset.reset(new InsetPhantom(buf, tmptok));
 580                 } else if (tmptok == "ERT") {
 581                         inset.reset(new InsetERT(buf));
 582                 } else if (tmptok == "listings") {
 583                         inset.reset(new InsetListings(buf));
 584                 } else if (tmptok == "script") {
 585                         inset.reset(new InsetScript(buf));
 586                 } else if (tmptok == "space") {
 587                         inset.reset(new InsetSpace);
 588                 } else if (tmptok == "Tabular") {
 589                         inset.reset(new InsetTabular(buf));
 590                 } else if (tmptok == "Text") {
 591                         inset.reset(new InsetText(buf));
 592                 } else if (tmptok == "VSpace") {
 593                         inset.reset(new InsetVSpace);
 594                 } else if (tmptok == "Foot") {
 595                         inset.reset(new InsetFoot(buf));
 596                 } else if (tmptok == "Marginal") {
 597                         inset.reset(new InsetMarginal(buf));
 598                 } else if (tmptok == "Newpage") {
 599                         inset.reset(new InsetNewpage);
 600                 } else if (tmptok == "Newline") {
 601                         inset.reset(new InsetNewline);
 602                 } else if (tmptok == "Argument") {
 603                         inset.reset(new InsetArgument(buf));
 604                 } else if (tmptok == "Float") {
 605                         inset.reset(new InsetFloat(buf, string()));
 606                 } else if (tmptok == "Wrap") {
 607                         lex.next();
 608                         string tmptok = lex.getString();
 609                         inset.reset(new InsetWrap(buf, tmptok));
 610                 } else if (tmptok == "Caption") {
 611                         inset.reset(new InsetCaption(buf));
 612                 } else if (tmptok == "Index") {
 613                         inset.reset(new InsetIndex(buf, InsetIndexParams()));
 614                 } else if (tmptok == "FloatList") {
 615                         inset.reset(new InsetFloatList(buf));
 616                 } else if (tmptok == "Info") {
 617                         inset.reset(new InsetInfo(buf));
 618                 } else if (tmptok == "Preview") {
 619                         inset.reset(new InsetPreview(buf));
 620                 } else {
 621                         lyxerr << "unknown Inset type '" << tmptok
 622                                << "'" << endl;
 623                         while (lex.isOK() && lex.getString() != "\\end_inset")
 624                                 lex.next();
 625                         return 0;
 626                 }
 627
 628                 // Set the buffer reference for proper parsing of some insets
 629                 // (InsetCollapsable for example)
 630                 inset->setBuffer(*buf);
 631                 inset->read(lex);
 632                 // Set again the buffer for insets that are created inside this inset
 633                 // (InsetMathHull for example).
 634                 inset->setBuffer(*buf);
 635         }
 636         return inset.release();
 637 }
 638
 639
 640 } // namespace lyx