src/lyxfunc.C

   1 /**
   2  * \file lyxfunc.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Alfredo Braunstein
   7  * \author Lars Gullik Bjønnes
   8  * \author Jean-Marc Lasgouttes
   9  * \author Angus Leeming
  10  * \author John Levon
  11  * \author André Pönitz
  12  * \author Allan Rae
  13  * \author Dekel Tsur
  14  * \author Martin Vermeer
  15  * \author Jürgen Vigna
  16  *
  17  * Full author contact details are available in file CREDITS.
  18  */
  19
  20 #include <config.h>
  21
  22 #include "lyxfunc.h"
  23
  24 #include "BranchList.h"
  25 #include "buffer.h"
  26 #include "buffer_funcs.h"
  27 #include "bufferlist.h"
  28 #include "bufferparams.h"
  29 #include "BufferView.h"
  30 #include "cursor.h"
  31 #include "CutAndPaste.h"
  32 #include "debug.h"
  33 #include "dispatchresult.h"
  34 #include "encoding.h"
  35 #include "errorlist.h"
  36 #include "exporter.h"
  37 #include "format.h"
  38 #include "funcrequest.h"
  39 #include "FuncStatus.h"
  40 #include "gettext.h"
  41 #include "importer.h"
  42 #include "insetiterator.h"
  43 #include "intl.h"
  44 #include "kbmap.h"
  45 #include "language.h"
  46 #include "LColor.h"
  47 #include "session.h"
  48 #include "lyx_main.h"
  49 #include "lyx_cb.h"
  50 #include "LyXAction.h"
  51 #include "lyxfind.h"
  52 #include "lyxlex.h"
  53 #include "lyxrc.h"
  54 #include "lyxrow.h"
  55 #include "lyxserver.h"
  56 #include "lyxtextclasslist.h"
  57 #include "lyxvc.h"
  58 #include "paragraph.h"
  59 #include "pariterator.h"
  60 #include "ParagraphParameters.h"
  61 #include "undo.h"
  62
  63 #include "insets/insetbox.h"
  64 #include "insets/insetbranch.h"
  65 #include "insets/insetcommand.h"
  66 #include "insets/insetert.h"
  67 #include "insets/insetexternal.h"
  68 #include "insets/insetfloat.h"
  69 #include "insets/insetgraphics.h"
  70 #include "insets/insetinclude.h"
  71 #include "insets/insetnote.h"
  72 #include "insets/insettabular.h"
  73 #include "insets/insetvspace.h"
  74 #include "insets/insetwrap.h"
  75
  76 #include "frontends/Application.h"
  77 #include "frontends/Alert.h"
  78 #include "frontends/Dialogs.h"
  79 #include "frontends/FileDialog.h"
  80 #include "frontends/FontLoader.h"
  81 #include "frontends/LyXKeySym.h"
  82 #include "frontends/LyXView.h"
  83 #include "frontends/Menubar.h"
  84 #include "frontends/Toolbars.h"
  85
  86 #include "support/environment.h"
  87 #include "support/filefilterlist.h"
  88 #include "support/filetools.h"
  89 #include "support/forkedcontr.h"
  90 #include "support/fs_extras.h"
  91 #include "support/lstrings.h"
  92 #include "support/path.h"
  93 #include "support/package.h"
  94 #include "support/systemcall.h"
  95 #include "support/convert.h"
  96 #include "support/os.h"
  97
  98 #include <boost/current_function.hpp>
  99 #include <boost/filesystem/operations.hpp>
 100
 101 #include <sstream>
 102
 103 using bv_funcs::freefont2string;
 104
 105 using lyx::docstring;
 106
 107 using lyx::support::absolutePath;
 108 using lyx::support::addName;
 109 using lyx::support::addPath;
 110 using lyx::support::bformat;
 111 using lyx::support::changeExtension;
 112 using lyx::support::contains;
 113 using lyx::support::FileFilterList;
 114 using lyx::support::fileSearch;
 115 using lyx::support::ForkedcallsController;
 116 using lyx::support::i18nLibFileSearch;
 117 using lyx::support::isDirWriteable;
 118 using lyx::support::isFileReadable;
 119 using lyx::support::isStrInt;
 120 using lyx::support::makeAbsPath;
 121 using lyx::support::makeDisplayPath;
 122 using lyx::support::package;
 123 using lyx::support::quoteName;
 124 using lyx::support::rtrim;
 125 using lyx::support::split;
 126 using lyx::support::subst;
 127 using lyx::support::Systemcall;
 128 using lyx::support::token;
 129 using lyx::support::trim;
 130 using lyx::support::prefixIs;
 131
 132 using std::endl;
 133 using std::make_pair;
 134 using std::pair;
 135 using std::string;
 136 using std::istringstream;
 137 using std::ostringstream;
 138
 139 namespace Alert = lyx::frontend::Alert;
 140 namespace biblio = lyx::biblio;
 141 namespace fs = boost::filesystem;
 142
 143
 144 // (alkis)
 145 extern tex_accent_struct get_accent(kb_action action);
 146
 147
 148 namespace {
 149
 150 bool getStatus(LCursor cursor,
 151                FuncRequest const & cmd, FuncStatus & status)
 152 {
 153         // Try to fix cursor in case it is broken.
 154         cursor.fixIfBroken();
 155
 156         // This is, of course, a mess. Better create a new doc iterator and use
 157         // this in Inset::getStatus. This might require an additional
 158         // BufferView * arg, though (which should be avoided)
 159         //LCursor safe = *this;
 160         bool res = false;
 161         for ( ; cursor.depth(); cursor.pop()) {
 162                 //lyxerr << "\nLCursor::getStatus: cmd: " << cmd << endl << *this << endl;
 163                 BOOST_ASSERT(cursor.idx() <= cursor.lastidx());
 164                 BOOST_ASSERT(cursor.pit() <= cursor.lastpit());
 165                 BOOST_ASSERT(cursor.pos() <= cursor.lastpos());
 166
 167                 // The inset's getStatus() will return 'true' if it made
 168                 // a definitive decision on whether it want to handle the
 169                 // request or not. The result of this decision is put into
 170                 // the 'status' parameter.
 171                 if (cursor.inset().getStatus(cursor, cmd, status)) {
 172                         res = true;
 173                         break;
 174                 }
 175         }
 176         return res;
 177 }
 178
 179
 180 /** Return the change status at cursor position, taking in account the
 181  * status at each level of the document iterator (a table in a deleted
 182  * footnote is deleted).
 183  * When \param outer is true, the top slice is not looked at.
 184  */
 185 Change::Type lookupChangeType(DocIterator const & dit, bool outer = false)
 186 {
 187         size_t const depth = dit.depth() - (outer ? 1 : 0);
 188
 189         for (size_t i = 0 ; i < depth ; ++i) {
 190                 CursorSlice const & slice = dit[i];
 191                 if (!slice.inset().inMathed()
 192                     && slice.pos() < slice.paragraph().size()) {
 193                         Change::Type const ch = slice.paragraph().lookupChange(slice.pos()).type;
 194                         if (ch != Change::UNCHANGED)
 195                                 return ch;
 196                 }
 197         }
 198         return Change::UNCHANGED;
 199 }
 200
 201 }
 202
 203 LyXFunc::LyXFunc()
 204         : lyx_view_(0),
 205         encoded_last_key(0),
 206         meta_fake_bit(key_modifier::none)
 207 {
 208 }
 209
 210
 211 void LyXFunc::initKeySequences(kb_keymap * kb)
 212 {
 213         keyseq.reset(new kb_sequence(kb, kb));
 214         cancel_meta_seq.reset(new kb_sequence(kb, kb));
 215 }
 216
 217
 218 void LyXFunc::setLyXView(LyXView * lv)
 219 {
 220         lyx_view_ = lv;
 221 }
 222
 223
 224 void LyXFunc::handleKeyFunc(kb_action action)
 225 {
 226         char c = encoded_last_key;
 227
 228         if (keyseq->length()) {
 229                 c = 0;
 230         }
 231
 232         lyx_view_->view()->getIntl().getTransManager()
 233                 .deadkey(c, get_accent(action).accent, view()->getLyXText());
 234         // Need to clear, in case the minibuffer calls these
 235         // actions
 236         keyseq->clear();
 237         // copied verbatim from do_accent_char
 238         view()->cursor().resetAnchor();
 239         view()->update();
 240 }
 241
 242
 243 void LyXFunc::processKeySym(LyXKeySymPtr keysym, key_modifier::state state)
 244 {
 245         lyxerr[Debug::KEY] << "KeySym is " << keysym->getSymbolName() << endl;
 246
 247         // Do nothing if we have nothing (JMarc)
 248         if (!keysym->isOK()) {
 249                 lyxerr[Debug::KEY] << "Empty kbd action (probably composing)"
 250                                    << endl;
 251                 return;
 252         }
 253
 254         if (keysym->isModifier()) {
 255                 lyxerr[Debug::KEY] << "isModifier true" << endl;
 256                 return;
 257         }
 258
 259         //Encoding const * encoding = view()->cursor().getEncoding();
 260         //encoded_last_key = keysym->getISOEncoded(encoding ? encoding->name() : "");
 261         size_t encoded_last_key = keysym->getUCSEncoded();
 262
 263         // Do a one-deep top-level lookup for
 264         // cancel and meta-fake keys. RVDK_PATCH_5
 265         cancel_meta_seq->reset();
 266
 267         FuncRequest func = cancel_meta_seq->addkey(keysym, state);
 268         lyxerr[Debug::KEY] << BOOST_CURRENT_FUNCTION
 269                            << " action first set to [" << func.action << ']'
 270                            << endl;
 271
 272         // When not cancel or meta-fake, do the normal lookup.
 273         // Note how the meta_fake Mod1 bit is OR-ed in and reset afterwards.
 274         // Mostly, meta_fake_bit = key_modifier::none. RVDK_PATCH_5.
 275         if ((func.action != LFUN_CANCEL) && (func.action != LFUN_META_PREFIX)) {
 276                 // remove Caps Lock and Mod2 as a modifiers
 277                 func = keyseq->addkey(keysym, (state | meta_fake_bit));
 278                 lyxerr[Debug::KEY] << BOOST_CURRENT_FUNCTION
 279                                    << "action now set to ["
 280                                    << func.action << ']' << endl;
 281         }
 282
 283         // Dont remove this unless you know what you are doing.
 284         meta_fake_bit = key_modifier::none;
 285
 286         // Can this happen now ?
 287         if (func.action == LFUN_NOACTION) {
 288                 func = FuncRequest(LFUN_COMMAND_PREFIX);
 289         }
 290
 291         if (lyxerr.debugging(Debug::KEY)) {
 292                 lyxerr << BOOST_CURRENT_FUNCTION
 293                        << " Key [action="
 294                        << func.action << "]["
 295                        << keyseq->print() << ']'
 296                        << endl;
 297         }
 298
 299         // already here we know if it any point in going further
 300         // why not return already here if action == -1 and
 301         // num_bytes == 0? (Lgb)
 302
 303         if (keyseq->length() > 1) {
 304                 lyx_view_->message(lyx::from_utf8(keyseq->print()));
 305         }
 306
 307
 308         // Maybe user can only reach the key via holding down shift.
 309         // Let's see. But only if shift is the only modifier
 310         if (func.action == LFUN_UNKNOWN_ACTION &&
 311             state == key_modifier::shift) {
 312                 lyxerr[Debug::KEY] << "Trying without shift" << endl;
 313                 func = keyseq->addkey(keysym, key_modifier::none);
 314                 lyxerr[Debug::KEY] << "Action now " << func.action << endl;
 315         }
 316
 317         if (func.action == LFUN_UNKNOWN_ACTION) {
 318                 // Hmm, we didn't match any of the keysequences. See
 319                 // if it's normal insertable text not already covered
 320                 // by a binding
 321                 if (keysym->isText() && keyseq->length() == 1) {
 322                         lyxerr[Debug::KEY] << "isText() is true, inserting." << endl;
 323                         func = FuncRequest(LFUN_SELF_INSERT,
 324                                            FuncRequest::KEYBOARD);
 325                 } else {
 326                         lyxerr[Debug::KEY] << "Unknown, !isText() - giving up" << endl;
 327                         lyx_view_->message(_("Unknown function."));
 328                         return;
 329                 }
 330         }
 331
 332         if (func.action == LFUN_SELF_INSERT) {
 333                 if (encoded_last_key != 0) {
 334                         docstring const arg(1, encoded_last_key);
 335                         dispatch(FuncRequest(LFUN_SELF_INSERT, arg,
 336                                              FuncRequest::KEYBOARD));
 337                         lyxerr[Debug::KEY]
 338                                 << "SelfInsert arg[`" << lyx::to_utf8(arg) << "']" << endl;
 339                 }
 340         } else {
 341                 dispatch(func);
 342         }
 343 }
 344
 345
 346 FuncStatus LyXFunc::getStatus(FuncRequest const & cmd) const
 347 {
 348         //lyxerr << "LyXFunc::getStatus: cmd: " << cmd << endl;
 349         FuncStatus flag;
 350         LCursor & cur = view()->cursor();
 351
 352         /* In LyX/Mac, when a dialog is open, the menus of the
 353            application can still be accessed without giving focus to
 354            the main window. In this case, we want to disable the menu
 355            entries that are buffer-related.
 356
 357            Note that this code is not perfect, as bug 1941 attests:
 358            http://bugzilla.lyx.org/show_bug.cgi?id=1941#c4
 359         */
 360         Buffer * buf;
 361         if (cmd.origin == FuncRequest::UI && !lyx_view_->hasFocus())
 362                 buf = 0;
 363         else
 364                 buf = lyx_view_->buffer();
 365
 366         if (cmd.action == LFUN_NOACTION) {
 367                 flag.message(lyx::from_utf8(N_("Nothing to do")));
 368                 flag.enabled(false);
 369                 return flag;
 370         }
 371
 372         switch (cmd.action) {
 373         case LFUN_UNKNOWN_ACTION:
 374 #ifndef HAVE_LIBAIKSAURUS
 375         case LFUN_THESAURUS_ENTRY:
 376 #endif
 377                 flag.unknown(true);
 378                 flag.enabled(false);
 379                 break;
 380
 381         default:
 382                 break;
 383         }
 384
 385         if (flag.unknown()) {
 386                 flag.message(lyx::from_utf8(N_("Unknown action")));
 387                 return flag;
 388         }
 389
 390         if (!flag.enabled()) {
 391                 if (flag.message().empty())
 392                         flag.message(lyx::from_utf8(N_("Command disabled")));
 393                 return flag;
 394         }
 395
 396         // Check whether we need a buffer
 397         if (!lyxaction.funcHasFlag(cmd.action, LyXAction::NoBuffer) && !buf) {
 398                 // no, exit directly
 399                 flag.message(lyx::from_utf8(N_("Command not allowed with"
 400                                     "out any document open")));
 401                 flag.enabled(false);
 402                 return flag;
 403         }
 404
 405         // I would really like to avoid having this switch and rather try to
 406         // encode this in the function itself.
 407         // -- And I'd rather let an inset decide which LFUNs it is willing
 408         // to handle (Andre')
 409         bool enable = true;
 410         switch (cmd.action) {
 411         case LFUN_BUFFER_TOGGLE_READ_ONLY:
 412                 flag.setOnOff(buf->isReadonly());
 413                 break;
 414
 415         case LFUN_BUFFER_SWITCH:
 416                 // toggle on the current buffer, but do not toggle off
 417                 // the other ones (is that a good idea?)
 418                 if (lyx::to_utf8(cmd.argument()) == buf->fileName())
 419                         flag.setOnOff(true);
 420                 break;
 421
 422         case LFUN_BUFFER_EXPORT:
 423                 enable = cmd.argument() == "custom"
 424                         || Exporter::isExportable(*buf, lyx::to_utf8(cmd.argument()));
 425                 break;
 426
 427         case LFUN_BUFFER_CHKTEX:
 428                 enable = buf->isLatex() && !lyxrc.chktex_command.empty();
 429                 break;
 430
 431         case LFUN_BUILD_PROGRAM:
 432                 enable = Exporter::isExportable(*buf, "program");
 433                 break;
 434
 435         case LFUN_LAYOUT_TABULAR:
 436                 enable = cur.innerInsetOfType(InsetBase::TABULAR_CODE);
 437                 break;
 438
 439         case LFUN_LAYOUT:
 440         case LFUN_LAYOUT_PARAGRAPH:
 441                 enable = !cur.inset().forceDefaultParagraphs(cur.idx());
 442                 break;
 443
 444         case LFUN_VC_REGISTER:
 445                 enable = !buf->lyxvc().inUse();
 446                 break;
 447         case LFUN_VC_CHECK_IN:
 448                 enable = buf->lyxvc().inUse() && !buf->isReadonly();
 449                 break;
 450         case LFUN_VC_CHECK_OUT:
 451                 enable = buf->lyxvc().inUse() && buf->isReadonly();
 452                 break;
 453         case LFUN_VC_REVERT:
 454         case LFUN_VC_UNDO_LAST:
 455                 enable = buf->lyxvc().inUse();
 456                 break;
 457         case LFUN_BUFFER_RELOAD:
 458                 enable = !buf->isUnnamed() && !buf->isClean();
 459                 break;
 460
 461         case LFUN_INSET_SETTINGS: {
 462                 enable = false;
 463                 if (!cur)
 464                         break;
 465                 InsetBase::Code code = cur.inset().lyxCode();
 466                 switch (code) {
 467                         case InsetBase::TABULAR_CODE:
 468                                 enable = cmd.argument() == "tabular";
 469                                 break;
 470                         case InsetBase::ERT_CODE:
 471                                 enable = cmd.argument() == "ert";
 472                                 break;
 473                         case InsetBase::FLOAT_CODE:
 474                                 enable = cmd.argument() == "float";
 475                                 break;
 476                         case InsetBase::WRAP_CODE:
 477                                 enable = cmd.argument() == "wrap";
 478                                 break;
 479                         case InsetBase::NOTE_CODE:
 480                                 enable = cmd.argument() == "note";
 481                                 break;
 482                         case InsetBase::BRANCH_CODE:
 483                                 enable = cmd.argument() == "branch";
 484                                 break;
 485                         case InsetBase::BOX_CODE:
 486                                 enable = cmd.argument() == "box";
 487                                 break;
 488                         default:
 489                                 break;
 490                 }
 491                 break;
 492         }
 493
 494         case LFUN_INSET_APPLY: {
 495                 string const name = cmd.getArg(0);
 496                 InsetBase * inset = lyx_view_->getDialogs().getOpenInset(name);
 497                 if (inset) {
 498                         FuncRequest fr(LFUN_INSET_MODIFY, cmd.argument());
 499                         FuncStatus fs;
 500                         bool const success = inset->getStatus(cur, fr, fs);
 501                         // Every inset is supposed to handle this
 502                         BOOST_ASSERT(success);
 503                         flag |= fs;
 504                 } else {
 505                         FuncRequest fr(LFUN_INSET_INSERT, cmd.argument());
 506                         flag |= getStatus(fr);
 507                 }
 508                 enable = flag.enabled();
 509                 break;
 510         }
 511
 512         case LFUN_DIALOG_SHOW: {
 513                 string const name = cmd.getArg(0);
 514                 if (!buf)
 515                         enable = name == "aboutlyx"
 516                                 || name == "file"
 517                                 || name == "forks"
 518                                 || name == "prefs"
 519                                 || name == "texinfo";
 520                 else if (name == "print")
 521                         enable = Exporter::isExportable(*buf, "dvi")
 522                                 && lyxrc.print_command != "none";
 523                 else if (name == "character" || name == "mathpanel")
 524                         enable = cur.inset().lyxCode() != InsetBase::ERT_CODE;
 525                 else if (name == "latexlog")
 526                         enable = isFileReadable(buf->getLogName().second);
 527 #if !defined (USE_ASPELL) && !defined (USE_ISPELL) && !defined (USE_PSPELL)
 528                 else if (name == "spellchecker")
 529                         enable = false;
 530 #endif
 531                 else if (name == "vclog")
 532                         enable = buf->lyxvc().inUse();
 533                 else if (name == "view-source")
 534                         enable = buf;
 535                 break;
 536         }
 537
 538         case LFUN_DIALOG_SHOW_NEW_INSET:
 539                 enable = cur.inset().lyxCode() != InsetBase::ERT_CODE;
 540                 break;
 541
 542         case LFUN_DIALOG_UPDATE: {
 543                 string const name = cmd.getArg(0);
 544                 if (!buf)
 545                         enable = name == "prefs";
 546                 break;
 547         }
 548
 549         case LFUN_CITATION_INSERT: {
 550                 FuncRequest fr(LFUN_INSET_INSERT, "citation");
 551                 enable = getStatus(fr).enabled();
 552                 break;
 553         }
 554
 555         case LFUN_BUFFER_WRITE: {
 556                 enable = view()->buffer()->isUnnamed()
 557                         || !view()->buffer()->isClean();
 558                 break;
 559         }
 560
 561         // this one is difficult to get right. As a half-baked
 562         // solution, we consider only the first action of the sequence
 563         case LFUN_COMMAND_SEQUENCE: {
 564                 // argument contains ';'-terminated commands
 565                 string const firstcmd = token(lyx::to_utf8(cmd.argument()), ';', 0);
 566                 FuncRequest func(lyxaction.lookupFunc(firstcmd));
 567                 func.origin = cmd.origin;
 568                 flag = getStatus(func);
 569         }
 570
 571         case LFUN_BUFFER_NEW:
 572         case LFUN_BUFFER_NEW_TEMPLATE:
 573         case LFUN_WORD_FIND_FORWARD:
 574         case LFUN_WORD_FIND_BACKWARD:
 575         case LFUN_COMMAND_PREFIX:
 576         case LFUN_COMMAND_EXECUTE:
 577         case LFUN_CANCEL:
 578         case LFUN_META_PREFIX:
 579         case LFUN_BUFFER_CLOSE:
 580         case LFUN_BUFFER_WRITE_AS:
 581         case LFUN_BUFFER_UPDATE:
 582         case LFUN_BUFFER_VIEW:
 583         case LFUN_BUFFER_IMPORT:
 584         case LFUN_LYX_QUIT:
 585         case LFUN_TOC_VIEW:
 586         case LFUN_BUFFER_AUTO_SAVE:
 587         case LFUN_RECONFIGURE:
 588         case LFUN_HELP_OPEN:
 589         case LFUN_FILE_NEW:
 590         case LFUN_FILE_OPEN:
 591         case LFUN_DROP_LAYOUTS_CHOICE:
 592         case LFUN_MENU_OPEN:
 593         case LFUN_SERVER_GET_NAME:
 594         case LFUN_SERVER_NOTIFY:
 595         case LFUN_SERVER_GOTO_FILE_ROW:
 596         case LFUN_DIALOG_HIDE:
 597         case LFUN_DIALOG_DISCONNECT_INSET:
 598         case LFUN_BUFFER_CHILD_OPEN:
 599         case LFUN_TOGGLE_CURSOR_FOLLOWS_SCROLLBAR:
 600         case LFUN_KEYMAP_OFF:
 601         case LFUN_KEYMAP_PRIMARY:
 602         case LFUN_KEYMAP_SECONDARY:
 603         case LFUN_KEYMAP_TOGGLE:
 604         case LFUN_REPEAT:
 605         case LFUN_BUFFER_EXPORT_CUSTOM:
 606         case LFUN_BUFFER_PRINT:
 607         case LFUN_PREFERENCES_SAVE:
 608         case LFUN_SCREEN_FONT_UPDATE:
 609         case LFUN_SET_COLOR:
 610         case LFUN_MESSAGE:
 611         case LFUN_EXTERNAL_EDIT:
 612         case LFUN_GRAPHICS_EDIT:
 613         case LFUN_ALL_INSETS_TOGGLE:
 614         case LFUN_BUFFER_LANGUAGE:
 615         case LFUN_TEXTCLASS_APPLY:
 616         case LFUN_TEXTCLASS_LOAD:
 617         case LFUN_BUFFER_SAVE_AS_DEFAULT:
 618         case LFUN_BUFFER_PARAMS_APPLY:
 619         case LFUN_LYXRC_APPLY:
 620         case LFUN_BUFFER_NEXT:
 621         case LFUN_BUFFER_PREVIOUS:
 622                 // these are handled in our dispatch()
 623                 break;
 624
 625         default:
 626
 627                 if (!::getStatus(cur, cmd, flag))
 628                         flag = view()->getStatus(cmd);
 629         }
 630
 631         if (!enable)
 632                 flag.enabled(false);
 633
 634         // Can we use a readonly buffer?
 635         if (buf && buf->isReadonly()
 636             && !lyxaction.funcHasFlag(cmd.action, LyXAction::ReadOnly)
 637             && !lyxaction.funcHasFlag(cmd.action, LyXAction::NoBuffer)) {
 638                 flag.message(lyx::from_utf8(N_("Document is read-only")));
 639                 flag.enabled(false);
 640         }
 641
 642         // Are we in a DELETED change-tracking region?
 643         if (buf && lookupChangeType(cur, true) == Change::DELETED
 644             && !lyxaction.funcHasFlag(cmd.action, LyXAction::ReadOnly)
 645             && !lyxaction.funcHasFlag(cmd.action, LyXAction::NoBuffer)) {
 646                 flag.message(lyx::from_utf8(N_("This portion of the document is deleted.")));
 647                 flag.enabled(false);
 648         }
 649
 650         // the default error message if we disable the command
 651         if (!flag.enabled() && flag.message().empty())
 652                 flag.message(lyx::from_utf8(N_("Command disabled")));
 653
 654         return flag;
 655 }
 656
 657
 658 bool LyXFunc::ensureBufferClean(BufferView * bv)
 659 {
 660         Buffer & buf = *bv->buffer();
 661         if (buf.isClean())
 662                 return true;
 663
 664         docstring const file = makeDisplayPath(buf.fileName(), 30);
 665         docstring text = bformat(_("The document %1$s has unsaved "
 666                                              "changes.\n\nDo you want to save "
 667                                              "the document?"), file);
 668         int const ret = Alert::prompt(_("Save changed document?"),
 669                                       text, 0, 1, _("&Save"),
 670                                       _("&Cancel"));
 671
 672         if (ret == 0)
 673                 dispatch(FuncRequest(LFUN_BUFFER_WRITE));
 674
 675         return buf.isClean();
 676 }
 677
 678
 679 namespace {
 680
 681 void showPrintError(string const & name)
 682 {
 683         docstring str = bformat(_("Could not print the document %1$s.\n"
 684                                             "Check that your printer is set up correctly."),
 685                              makeDisplayPath(name, 50));
 686         Alert::error(_("Print document failed"), str);
 687 }
 688
 689
 690 void loadTextclass(string const & name)
 691 {
 692         std::pair<bool, lyx::textclass_type> const tc_pair =
 693                 textclasslist.numberOfClass(name);
 694
 695         if (!tc_pair.first) {
 696                 lyxerr << "Document class \"" << name
 697                        << "\" does not exist."
 698                        << std::endl;
 699                 return;
 700         }
 701
 702         lyx::textclass_type const tc = tc_pair.second;
 703
 704         if (!textclasslist[tc].load()) {
 705                 docstring s = bformat(_("The document could not be converted\n"
 706                                                   "into the document class %1$s."),
 707                                    lyx::from_utf8(textclasslist[tc].name()));
 708                 Alert::error(_("Could not change class"), s);
 709         }
 710 }
 711
 712
 713 void actOnUpdatedPrefs(LyXRC const & lyxrc_orig, LyXRC const & lyxrc_new);
 714
 715 } //namespace anon
 716
 717
 718 void LyXFunc::dispatch(FuncRequest const & cmd)
 719 {
 720         BOOST_ASSERT(view());
 721         string const argument = lyx::to_utf8(cmd.argument());
 722         kb_action const action = cmd.action;
 723
 724         lyxerr[Debug::ACTION] << "LyXFunc::dispatch: cmd: " << cmd << endl;
 725         //lyxerr << "LyXFunc::dispatch: cmd: " << cmd << endl;
 726
 727         // we have not done anything wrong yet.
 728         errorstat = false;
 729         dispatch_buffer.erase();
 730
 731         // redraw the screen at the end (first of the two drawing steps).
 732         //This is done unless explicitely requested otherwise
 733         bool update = true;
 734         // also do the second redrawing step. Only done if requested.
 735         bool updateforce = false;
 736
 737         FuncStatus const flag = getStatus(cmd);
 738         if (!flag.enabled()) {
 739                 // We cannot use this function here
 740                 lyxerr[Debug::ACTION] << "LyXFunc::dispatch: "
 741                        << lyxaction.getActionName(action)
 742                        << " [" << action << "] is disabled at this location"
 743                        << endl;
 744                 setErrorMessage(flag.message());
 745         } else {
 746                 switch (action) {
 747
 748                 case LFUN_WORD_FIND_FORWARD:
 749                 case LFUN_WORD_FIND_BACKWARD: {
 750                         static string last_search;
 751                         string searched_string;
 752
 753                         if (!argument.empty()) {
 754                                 last_search = argument;
 755                                 searched_string = argument;
 756                         } else {
 757                                 searched_string = last_search;
 758                         }
 759
 760                         if (searched_string.empty())
 761                                 break;
 762
 763                         bool const fw = action == LFUN_WORD_FIND_FORWARD;
 764                         string const data =
 765                                 lyx::find::find2string(searched_string, true, false, fw);
 766                         lyx::find::find(view(), FuncRequest(LFUN_WORD_FIND, data));
 767                         break;
 768                 }
 769
 770                 case LFUN_COMMAND_PREFIX:
 771                         lyx_view_->message(lyx::from_utf8(keyseq->printOptions()));
 772                         break;
 773
 774                 case LFUN_COMMAND_EXECUTE:
 775                         lyx_view_->getToolbars().display("minibuffer", true);
 776                         lyx_view_->focus_command_buffer();
 777                         break;
 778
 779                 case LFUN_CANCEL:
 780                         keyseq->reset();
 781                         meta_fake_bit = key_modifier::none;
 782                         if (view()->buffer())
 783                                 // cancel any selection
 784                                 dispatch(FuncRequest(LFUN_MARK_OFF));
 785                         setMessage(_("Cancel"));
 786                         break;
 787
 788                 case LFUN_META_PREFIX:
 789                         meta_fake_bit = key_modifier::alt;
 790                         setMessage(lyx::from_utf8(keyseq->print()));
 791                         break;
 792
 793                 case LFUN_BUFFER_TOGGLE_READ_ONLY:
 794                         if (lyx_view_->buffer()->lyxvc().inUse())
 795                                 lyx_view_->buffer()->lyxvc().toggleReadOnly();
 796                         else
 797                                 lyx_view_->buffer()->setReadonly(
 798                                         !lyx_view_->buffer()->isReadonly());
 799                         break;
 800
 801                 // --- Menus -----------------------------------------------
 802                 case LFUN_BUFFER_NEW:
 803                         menuNew(argument, false);
 804                         break;
 805
 806                 case LFUN_BUFFER_NEW_TEMPLATE:
 807                         menuNew(argument, true);
 808                         break;
 809
 810                 case LFUN_BUFFER_CLOSE:
 811                         closeBuffer();
 812                         break;
 813
 814                 case LFUN_BUFFER_WRITE:
 815                         if (!lyx_view_->buffer()->isUnnamed()) {
 816                                 docstring const str = bformat(_("Saving document %1$s..."),
 817                                          makeDisplayPath(lyx_view_->buffer()->fileName()));
 818                                 lyx_view_->message(str);
 819                                 menuWrite(lyx_view_->buffer());
 820                                 lyx_view_->message(str + _(" done."));
 821                         } else
 822                                 writeAs(lyx_view_->buffer());
 823                         update = false;
 824                         break;
 825
 826                 case LFUN_BUFFER_WRITE_AS:
 827                         writeAs(lyx_view_->buffer(), argument);
 828                         update = false;
 829                         break;
 830
 831                 case LFUN_BUFFER_RELOAD: {
 832                         docstring const file = makeDisplayPath(view()->buffer()->fileName(), 20);
 833                         docstring text = bformat(_("Any changes will be lost. Are you sure "
 834                                                              "you want to revert to the saved version of the document %1$s?"), file);
 835                         int const ret = Alert::prompt(_("Revert to saved document?"),
 836                                 text, 0, 1, _("&Revert"), _("&Cancel"));
 837
 838                         if (ret == 0)
 839                                 view()->reload();
 840                         break;
 841                 }
 842
 843                 case LFUN_BUFFER_UPDATE:
 844                         Exporter::Export(lyx_view_->buffer(), argument, true);
 845                         break;
 846
 847                 case LFUN_BUFFER_VIEW:
 848                         Exporter::preview(lyx_view_->buffer(), argument);
 849                         break;
 850
 851                 case LFUN_BUILD_PROGRAM:
 852                         Exporter::Export(lyx_view_->buffer(), "program", true);
 853                         break;
 854
 855                 case LFUN_BUFFER_CHKTEX:
 856                         lyx_view_->buffer()->runChktex();
 857                         break;
 858
 859                 case LFUN_BUFFER_EXPORT:
 860                         if (argument == "custom")
 861                                 lyx_view_->getDialogs().show("sendto");
 862                         else {
 863                                 Exporter::Export(lyx_view_->buffer(), argument, false);
 864                         }
 865                         break;
 866
 867                 case LFUN_BUFFER_EXPORT_CUSTOM: {
 868                         string format_name;
 869                         string command = split(argument, format_name, ' ');
 870                         Format const * format = formats.getFormat(format_name);
 871                         if (!format) {
 872                                 lyxerr << "Format \"" << format_name
 873                                        << "\" not recognized!"
 874                                        << std::endl;
 875                                 break;
 876                         }
 877
 878                         Buffer * buffer = lyx_view_->buffer();
 879
 880                         // The name of the file created by the conversion process
 881                         string filename;
 882
 883                         // Output to filename
 884                         if (format->name() == "lyx") {
 885                                 string const latexname =
 886                                         buffer->getLatexName(false);
 887                                 filename = changeExtension(latexname,
 888                                                            format->extension());
 889                                 filename = addName(buffer->temppath(), filename);
 890
 891                                 if (!buffer->writeFile(filename))
 892                                         break;
 893
 894                         } else {
 895                                 Exporter::Export(buffer, format_name, true, filename);
 896                         }
 897
 898                         // Substitute $$FName for filename
 899                         if (!contains(command, "$$FName"))
 900                                 command = "( " + command + " ) < $$FName";
 901                         command = subst(command, "$$FName", filename);
 902
 903                         // Execute the command in the background
 904                         Systemcall call;
 905                         call.startscript(Systemcall::DontWait, command);
 906                         break;
 907                 }
 908
 909                 case LFUN_BUFFER_PRINT: {
 910                         string target;
 911                         string target_name;
 912                         string command = split(split(argument, target, ' '),
 913                                                target_name, ' ');
 914
 915                         if (target.empty()
 916                             || target_name.empty()
 917                             || command.empty()) {
 918                                 lyxerr << "Unable to parse \""
 919                                        << argument << '"' << std::endl;
 920                                 break;
 921                         }
 922                         if (target != "printer" && target != "file") {
 923                                 lyxerr << "Unrecognized target \""
 924                                        << target << '"' << std::endl;
 925                                 break;
 926                         }
 927
 928                         Buffer * buffer = lyx_view_->buffer();
 929
 930                         if (!Exporter::Export(buffer, "dvi", true)) {
 931                                 showPrintError(buffer->fileName());
 932                                 break;
 933                         }
 934
 935                         // Push directory path.
 936                         string const path = buffer->temppath();
 937                         lyx::support::Path p(path);
 938
 939                         // there are three cases here:
 940                         // 1. we print to a file
 941                         // 2. we print directly to a printer
 942                         // 3. we print using a spool command (print to file first)
 943                         Systemcall one;
 944                         int res = 0;
 945                         string const dviname =
 946                                 changeExtension(buffer->getLatexName(true),
 947                                                 "dvi");
 948
 949                         if (target == "printer") {
 950                                 if (!lyxrc.print_spool_command.empty()) {
 951                                         // case 3: print using a spool
 952                                         string const psname =
 953                                                 changeExtension(dviname,".ps");
 954                                         command += lyxrc.print_to_file
 955                                                 + quoteName(psname)
 956                                                 + ' '
 957                                                 + quoteName(dviname);
 958
 959                                         string command2 =
 960                                                 lyxrc.print_spool_command +' ';
 961                                         if (target_name != "default") {
 962                                                 command2 += lyxrc.print_spool_printerprefix
 963                                                         + target_name
 964                                                         + ' ';
 965                                         }
 966                                         command2 += quoteName(psname);
 967                                         // First run dvips.
 968                                         // If successful, then spool command
 969                                         res = one.startscript(
 970                                                 Systemcall::Wait,
 971                                                 command);
 972
 973                                         if (res == 0)
 974                                                 res = one.startscript(
 975                                                         Systemcall::DontWait,
 976                                                         command2);
 977                                 } else {
 978                                         // case 2: print directly to a printer
 979                                         res = one.startscript(
 980                                                 Systemcall::DontWait,
 981                                                 command + quoteName(dviname));
 982                                 }
 983
 984                         } else {
 985                                 // case 1: print to a file
 986                                 command += lyxrc.print_to_file
 987                                         + quoteName(makeAbsPath(target_name,
 988                                                                 path))
 989                                         + ' '
 990                                         + quoteName(dviname);
 991                                 res = one.startscript(Systemcall::DontWait,
 992                                                       command);
 993                         }
 994
 995                         if (res != 0)
 996                                 showPrintError(buffer->fileName());
 997                         break;
 998                 }
 999
1000                 case LFUN_BUFFER_IMPORT:
1001                         doImport(argument);
1002                         break;
1003
1004                 case LFUN_LYX_QUIT:
1005                         if (view()->buffer()) {
1006                                 // save cursor Position for opened files to .lyx/session
1007                                 LyX::ref().session().saveFilePosition(lyx_view_->buffer()->fileName(),
1008                                         boost::tie(view()->cursor().pit(), view()->cursor().pos()) );
1009                                 // save bookmarks to .lyx/session
1010                                 view()->saveSavedPositions();
1011                         }
1012                         LyX::ref().quit(argument == "force");
1013                         break;
1014
1015                 case LFUN_TOC_VIEW: {
1016                         InsetCommandParams p("tableofcontents");
1017                         string const data = InsetCommandMailer::params2string("toc", p);
1018                         lyx_view_->getDialogs().show("toc", data, 0);
1019                         break;
1020                 }
1021
1022                 case LFUN_BUFFER_AUTO_SAVE:
1023                         autoSave(view());
1024                         break;
1025
1026                 case LFUN_RECONFIGURE:
1027                         reconfigure(view());
1028                         break;
1029
1030                 case LFUN_HELP_OPEN: {
1031                         string const arg = argument;
1032                         if (arg.empty()) {
1033                                 setErrorMessage(_("Missing argument"));
1034                                 break;
1035                         }
1036                         string const fname = i18nLibFileSearch("doc", arg, "lyx");
1037                         if (fname.empty()) {
1038                                 lyxerr << "LyX: unable to find documentation file `"
1039                                                          << arg << "'. Bad installation?" << endl;
1040                                 break;
1041                         }
1042                         lyx_view_->message(bformat(_("Opening help file %1$s..."),
1043                                 makeDisplayPath(fname)));
1044                         lyx_view_->loadLyXFile(fname, false);
1045                         break;
1046                 }
1047
1048                 // --- version control -------------------------------
1049                 case LFUN_VC_REGISTER:
1050                         if (!ensureBufferClean(view()))
1051                                 break;
1052                         if (!lyx_view_->buffer()->lyxvc().inUse()) {
1053                                 lyx_view_->buffer()->lyxvc().registrer();
1054                                 view()->reload();
1055                         }
1056                         break;
1057
1058                 case LFUN_VC_CHECK_IN:
1059                         if (!ensureBufferClean(view()))
1060                                 break;
1061                         if (lyx_view_->buffer()->lyxvc().inUse()
1062                                         && !lyx_view_->buffer()->isReadonly()) {
1063                                 lyx_view_->buffer()->lyxvc().checkIn();
1064                                 view()->reload();
1065                         }
1066                         break;
1067
1068                 case LFUN_VC_CHECK_OUT:
1069                         if (!ensureBufferClean(view()))
1070                                 break;
1071                         if (lyx_view_->buffer()->lyxvc().inUse()
1072                                         && lyx_view_->buffer()->isReadonly()) {
1073                                 lyx_view_->buffer()->lyxvc().checkOut();
1074                                 view()->reload();
1075                         }
1076                         break;
1077
1078                 case LFUN_VC_REVERT:
1079                         lyx_view_->buffer()->lyxvc().revert();
1080                         view()->reload();
1081                         break;
1082
1083                 case LFUN_VC_UNDO_LAST:
1084                         lyx_view_->buffer()->lyxvc().undoLast();
1085                         view()->reload();
1086                         break;
1087
1088                 // --- buffers ----------------------------------------
1089                 case LFUN_BUFFER_SWITCH:
1090                         lyx_view_->setBuffer(theBufferList().getBuffer(argument));
1091                         break;
1092
1093                 case LFUN_BUFFER_NEXT:
1094                         lyx_view_->setBuffer(theBufferList().next(view()->buffer()));
1095                         break;
1096
1097                 case LFUN_BUFFER_PREVIOUS:
1098                         lyx_view_->setBuffer(theBufferList().previous(view()->buffer()));
1099                         break;
1100
1101                 case LFUN_FILE_NEW:
1102                         newFile(view(), argument);
1103                         break;
1104
1105                 case LFUN_FILE_OPEN:
1106                         open(argument);
1107                         break;
1108
1109                 case LFUN_DROP_LAYOUTS_CHOICE:
1110                         lyx_view_->getToolbars().openLayoutList();
1111                         break;
1112
1113                 case LFUN_MENU_OPEN:
1114                         lyx_view_->getMenubar().openByName(lyx::from_utf8(argument));
1115                         break;
1116
1117                 // --- lyxserver commands ----------------------------
1118                 case LFUN_SERVER_GET_NAME:
1119                         setMessage(lyx::from_utf8(lyx_view_->buffer()->fileName()));
1120                         lyxerr[Debug::INFO] << "FNAME["
1121                                                          << lyx_view_->buffer()->fileName()
1122                                                          << "] " << endl;
1123                         break;
1124
1125                 case LFUN_SERVER_NOTIFY:
1126                         dispatch_buffer = lyx::from_utf8(keyseq->print());
1127                         theLyXServer().notifyClient(lyx::to_utf8(dispatch_buffer));
1128                         break;
1129
1130                 case LFUN_SERVER_GOTO_FILE_ROW: {
1131                         string file_name;
1132                         int row;
1133                         istringstream is(argument);
1134                         is >> file_name >> row;
1135                         if (prefixIs(file_name, package().temp_dir())) {
1136                                 // Needed by inverse dvi search. If it is a file
1137                                 // in tmpdir, call the apropriated function
1138                                 lyx_view_->setBuffer(theBufferList().getBufferFromTmp(file_name));
1139                         } else {
1140                                 // Must replace extension of the file to be .lyx
1141                                 // and get full path
1142                                 string const s = changeExtension(file_name, ".lyx");
1143                                 // Either change buffer or load the file
1144                                 if (theBufferList().exists(s)) {
1145                                         lyx_view_->setBuffer(theBufferList().getBuffer(s));
1146                                 } else {
1147                                         lyx_view_->loadLyXFile(s);
1148                                 }
1149                         }
1150
1151                         view()->setCursorFromRow(row);
1152
1153                         view()->center();
1154                         // see BufferView::center()
1155                         break;
1156                 }
1157
1158                 case LFUN_DIALOG_SHOW: {
1159                         string const name = cmd.getArg(0);
1160                         string data = trim(lyx::to_utf8(cmd.argument()).substr(name.size()));
1161
1162                         if (name == "character") {
1163                                 data = freefont2string();
1164                                 if (!data.empty())
1165                                         lyx_view_->getDialogs().show("character", data);
1166                         } else if (name == "latexlog") {
1167                                 pair<Buffer::LogType, string> const logfile =
1168                                         lyx_view_->buffer()->getLogName();
1169                                 switch (logfile.first) {
1170                                 case Buffer::latexlog:
1171                                         data = "latex ";
1172                                         break;
1173                                 case Buffer::buildlog:
1174                                         data = "literate ";
1175                                         break;
1176                                 }
1177                                 data += LyXLex::quoteString(logfile.second);
1178                                 lyx_view_->getDialogs().show("log", data);
1179                         } else if (name == "vclog") {
1180                                 string const data = "vc " +
1181                                         LyXLex::quoteString(lyx_view_->buffer()->lyxvc().getLogFile());
1182                                 lyx_view_->getDialogs().show("log", data);
1183                         } else
1184                                 lyx_view_->getDialogs().show(name, data);
1185                         break;
1186                 }
1187
1188                 case LFUN_DIALOG_SHOW_NEW_INSET: {
1189                         string const name = cmd.getArg(0);
1190                         string data = trim(lyx::to_utf8(cmd.argument()).substr(name.size()));
1191                         if (name == "bibitem" ||
1192                             name == "bibtex" ||
1193                             name == "index" ||
1194                             name == "label" ||
1195                             name == "ref" ||
1196                             name == "toc" ||
1197                             name == "url") {
1198                                 InsetCommandParams p(name);
1199                                 data = InsetCommandMailer::params2string(name, p);
1200                         } else if (name == "include") {
1201                                 InsetCommandParams p(data);
1202                                 data = InsetIncludeMailer::params2string(p);
1203                         } else if (name == "box") {
1204                                 // \c data == "Boxed" || "Frameless" etc
1205                                 InsetBoxParams p(data);
1206                                 data = InsetBoxMailer::params2string(p);
1207                         } else if (name == "branch") {
1208                                 InsetBranchParams p;
1209                                 data = InsetBranchMailer::params2string(p);
1210                         } else if (name == "citation") {
1211                                 InsetCommandParams p("cite");
1212                                 data = InsetCommandMailer::params2string(name, p);
1213                         } else if (name == "ert") {
1214                                 data = InsetERTMailer::params2string(InsetCollapsable::Open);
1215                         } else if (name == "external") {
1216                                 InsetExternalParams p;
1217                                 Buffer const & buffer = *lyx_view_->buffer();
1218                                 data = InsetExternalMailer::params2string(p, buffer);
1219                         } else if (name == "float") {
1220                                 InsetFloatParams p;
1221                                 data = InsetFloatMailer::params2string(p);
1222                         } else if (name == "graphics") {
1223                                 InsetGraphicsParams p;
1224                                 Buffer const & buffer = *lyx_view_->buffer();
1225                                 data = InsetGraphicsMailer::params2string(p, buffer);
1226                         } else if (name == "note") {
1227                                 InsetNoteParams p;
1228                                 data = InsetNoteMailer::params2string(p);
1229                         } else if (name == "vspace") {
1230                                 VSpace space;
1231                                 data = InsetVSpaceMailer::params2string(space);
1232                         } else if (name == "wrap") {
1233                                 InsetWrapParams p;
1234                                 data = InsetWrapMailer::params2string(p);
1235                         }
1236                         lyx_view_->getDialogs().show(name, data, 0);
1237                         break;
1238                 }
1239
1240                 case LFUN_DIALOG_UPDATE: {
1241                         string const & name = argument;
1242                         // Can only update a dialog connected to an existing inset
1243                         InsetBase * inset = lyx_view_->getDialogs().getOpenInset(name);
1244                         if (inset) {
1245                                 FuncRequest fr(LFUN_INSET_DIALOG_UPDATE, cmd.argument());
1246                                 inset->dispatch(view()->cursor(), fr);
1247                         } else if (name == "paragraph") {
1248                                 dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
1249                         } else if (name == "prefs") {
1250                                 lyx_view_->getDialogs().update(name, string());
1251                         }
1252                         break;
1253                 }
1254
1255                 case LFUN_DIALOG_HIDE:
1256                         Dialogs::hide(argument, 0);
1257                         break;
1258
1259                 case LFUN_DIALOG_DISCONNECT_INSET:
1260                         lyx_view_->getDialogs().disconnect(argument);
1261                         break;
1262
1263
1264                 case LFUN_CITATION_INSERT: {
1265                         if (!argument.empty()) {
1266                                 // we can have one optional argument, delimited by '|'
1267                                 // citation-insert <key>|<text_before>
1268                                 // this should be enhanced to also support text_after
1269                                 // and citation style
1270                                 string arg = argument;
1271                                 string opt1;
1272                                 if (contains(argument, "|")) {
1273                                         arg = token(argument, '|', 0);
1274                                         opt1 = '[' + token(argument, '|', 1) + ']';
1275                                 }
1276                                 std::ostringstream os;
1277                                 os << "citation LatexCommand\n"
1278                                    << "\\cite" << opt1 << "{" << arg << "}\n"
1279                                    << "\\end_inset";
1280                                 FuncRequest fr(LFUN_INSET_INSERT, os.str());
1281                                 dispatch(fr);
1282                         } else
1283                                 dispatch(FuncRequest(LFUN_DIALOG_SHOW, "citation"));
1284                         break;
1285                 }
1286
1287                 case LFUN_BUFFER_CHILD_OPEN: {
1288                         string const filename =
1289                                 makeAbsPath(argument, lyx_view_->buffer()->filePath());
1290                         // FIXME Should use bformat
1291                         setMessage(_("Opening child document ") +
1292                                          makeDisplayPath(filename) + "...");
1293                         view()->savePosition(0);
1294                         string const parentfilename = lyx_view_->buffer()->fileName();
1295                         if (theBufferList().exists(filename))
1296                                 lyx_view_->setBuffer(theBufferList().getBuffer(filename));
1297                         else
1298                                 lyx_view_->loadLyXFile(filename);
1299                         // Set the parent name of the child document.
1300                         // This makes insertion of citations and references in the child work,
1301                         // when the target is in the parent or another child document.
1302                         lyx_view_->buffer()->setParentName(parentfilename);
1303                         break;
1304                 }
1305
1306                 case LFUN_TOGGLE_CURSOR_FOLLOWS_SCROLLBAR:
1307                         lyxrc.cursor_follows_scrollbar = !lyxrc.cursor_follows_scrollbar;
1308                         break;
1309
1310                 case LFUN_KEYMAP_OFF:
1311                         lyx_view_->view()->getIntl().keyMapOn(false);
1312                         break;
1313
1314                 case LFUN_KEYMAP_PRIMARY:
1315                         lyx_view_->view()->getIntl().keyMapPrim();
1316                         break;
1317
1318                 case LFUN_KEYMAP_SECONDARY:
1319                         lyx_view_->view()->getIntl().keyMapSec();
1320                         break;
1321
1322                 case LFUN_KEYMAP_TOGGLE:
1323                         lyx_view_->view()->getIntl().toggleKeyMap();
1324                         break;
1325
1326                 case LFUN_REPEAT: {
1327                         // repeat command
1328                         string countstr;
1329                         string rest = split(argument, countstr, ' ');
1330                         istringstream is(countstr);
1331                         int count = 0;
1332                         is >> count;
1333                         lyxerr << "repeat: count: " << count << " cmd: " << rest << endl;
1334                         for (int i = 0; i < count; ++i)
1335                                 dispatch(lyxaction.lookupFunc(rest));
1336                         break;
1337                 }
1338
1339                 case LFUN_COMMAND_SEQUENCE: {
1340                         // argument contains ';'-terminated commands
1341                         string arg = argument;
1342                         while (!arg.empty()) {
1343                                 string first;
1344                                 arg = split(arg, first, ';');
1345                                 FuncRequest func(lyxaction.lookupFunc(first));
1346                                 func.origin = cmd.origin;
1347                                 dispatch(func);
1348                         }
1349                         break;
1350                 }
1351
1352                 case LFUN_PREFERENCES_SAVE: {
1353                         lyx::support::Path p(package().user_support());
1354                         lyxrc.write("preferences", false);
1355                         break;
1356                 }
1357
1358                 case LFUN_SCREEN_FONT_UPDATE:
1359                         // handle the screen font changes.
1360                         lyxrc.set_font_norm_type();
1361                         theFontLoader().update();
1362                         // All visible buffers will need resize
1363                         view()->resize();
1364                         break;
1365
1366                 case LFUN_SET_COLOR: {
1367                         string lyx_name;
1368                         string const x11_name = split(argument, lyx_name, ' ');
1369                         if (lyx_name.empty() || x11_name.empty()) {
1370                                 setErrorMessage(_("Syntax: set-color <lyx_name>"
1371                                                         " <x11_name>"));
1372                                 break;
1373                         }
1374
1375                         bool const graphicsbg_changed =
1376                                 (lyx_name == lcolor.getLyXName(LColor::graphicsbg) &&
1377                                  x11_name != lcolor.getX11Name(LColor::graphicsbg));
1378
1379                         if (!lcolor.setColor(lyx_name, x11_name)) {
1380                                 setErrorMessage(
1381                                                 bformat(_("Set-color \"%1$s\" failed "
1382                                                                        "- color is undefined or "
1383                                                                        "may not be redefined"),
1384                                                                            lyx::from_utf8(lyx_name)));
1385                                 break;
1386                         }
1387
1388                         theApp->updateColor(lcolor.getFromLyXName(lyx_name));
1389
1390                         if (graphicsbg_changed) {
1391 #ifdef WITH_WARNINGS
1392 #warning FIXME!! The graphics cache no longer has a changeDisplay method.
1393 #endif
1394 #if 0
1395                                 lyx::graphics::GCache::get().changeDisplay(true);
1396 #endif
1397                         }
1398                         break;
1399                 }
1400
1401                 case LFUN_MESSAGE:
1402                         lyx_view_->message(lyx::from_utf8(argument));
1403                         break;
1404
1405                 case LFUN_EXTERNAL_EDIT: {
1406                         FuncRequest fr(action, argument);
1407                         InsetExternal().dispatch(view()->cursor(), fr);
1408                         break;
1409                 }
1410
1411                 case LFUN_GRAPHICS_EDIT: {
1412                         FuncRequest fr(action, argument);
1413                         InsetGraphics().dispatch(view()->cursor(), fr);
1414                         break;
1415                 }
1416
1417                 case LFUN_INSET_APPLY: {
1418                         string const name = cmd.getArg(0);
1419                         InsetBase * inset = lyx_view_->getDialogs().getOpenInset(name);
1420                         if (inset) {
1421                                 FuncRequest fr(LFUN_INSET_MODIFY, argument);
1422                                 inset->dispatch(view()->cursor(), fr);
1423                         } else {
1424                                 FuncRequest fr(LFUN_INSET_INSERT, argument);
1425                                 dispatch(fr);
1426                         }
1427                         // ideally, the update flag should be set by the insets,
1428                         // but this is not possible currently
1429                         updateforce = true;
1430                         break;
1431                 }
1432
1433                 case LFUN_ALL_INSETS_TOGGLE: {
1434                         string action;
1435                         string const name = split(argument, action, ' ');
1436                         InsetBase::Code const inset_code =
1437                                 InsetBase::translate(name);
1438
1439                         LCursor & cur = view()->cursor();
1440                         FuncRequest fr(LFUN_INSET_TOGGLE, action);
1441
1442                         InsetBase & inset = lyx_view_->buffer()->inset();
1443                         InsetIterator it  = inset_iterator_begin(inset);
1444                         InsetIterator const end = inset_iterator_end(inset);
1445                         for (; it != end; ++it) {
1446                                 if (inset_code == InsetBase::NO_CODE
1447                                     || inset_code == it->lyxCode()) {
1448                                         LCursor tmpcur = cur;
1449                                         tmpcur.pushLeft(*it);
1450                                         it->dispatch(tmpcur, fr);
1451                                 }
1452                         }
1453                         updateforce = true;
1454                         break;
1455                 }
1456
1457                 case LFUN_BUFFER_LANGUAGE: {
1458                         Buffer & buffer = *lyx_view_->buffer();
1459                         Language const * oldL = buffer.params().language;
1460                         Language const * newL = languages.getLanguage(argument);
1461                         if (!newL || oldL == newL)
1462                                 break;
1463
1464                         if (oldL->rightToLeft() == newL->rightToLeft()
1465                             && !buffer.isMultiLingual())
1466                                 buffer.changeLanguage(oldL, newL);
1467                         else
1468                                 buffer.updateDocLang(newL);
1469                         break;
1470                 }
1471
1472                 case LFUN_BUFFER_SAVE_AS_DEFAULT: {
1473                         string const fname =
1474                                 addName(addPath(package().user_support(), "templates/"),
1475                                         "defaults.lyx");
1476                         Buffer defaults(fname);
1477
1478                         istringstream ss(argument);
1479                         LyXLex lex(0,0);
1480                         lex.setStream(ss);
1481                         int const unknown_tokens = defaults.readHeader(lex);
1482
1483                         if (unknown_tokens != 0) {
1484                                 lyxerr << "Warning in LFUN_BUFFER_SAVE_AS_DEFAULT!\n"
1485                                        << unknown_tokens << " unknown token"
1486                                        << (unknown_tokens == 1 ? "" : "s")
1487                                        << endl;
1488                         }
1489
1490                         if (defaults.writeFile(defaults.fileName()))
1491                                 // FIXME Should use bformat
1492                                 setMessage(_("Document defaults saved in ")
1493                                            + makeDisplayPath(fname));
1494                         else
1495                                 setErrorMessage(_("Unable to save document defaults"));
1496                         break;
1497                 }
1498
1499                 case LFUN_BUFFER_PARAMS_APPLY: {
1500                         biblio::CiteEngine const engine =
1501                                 lyx_view_->buffer()->params().cite_engine;
1502
1503                         istringstream ss(argument);
1504                         LyXLex lex(0,0);
1505                         lex.setStream(ss);
1506                         int const unknown_tokens =
1507                                 lyx_view_->buffer()->readHeader(lex);
1508
1509                         if (unknown_tokens != 0) {
1510                                 lyxerr << "Warning in LFUN_BUFFER_PARAMS_APPLY!\n"
1511                                        << unknown_tokens << " unknown token"
1512                                        << (unknown_tokens == 1 ? "" : "s")
1513                                        << endl;
1514                         }
1515                         if (engine == lyx_view_->buffer()->params().cite_engine)
1516                                 break;
1517
1518                         LCursor & cur = view()->cursor();
1519                         FuncRequest fr(LFUN_INSET_REFRESH);
1520
1521                         InsetBase & inset = lyx_view_->buffer()->inset();
1522                         InsetIterator it  = inset_iterator_begin(inset);
1523                         InsetIterator const end = inset_iterator_end(inset);
1524                         for (; it != end; ++it)
1525                                 if (it->lyxCode() == InsetBase::CITE_CODE)
1526                                         it->dispatch(cur, fr);
1527                         break;
1528                 }
1529
1530                 case LFUN_TEXTCLASS_APPLY: {
1531                         Buffer * buffer = lyx_view_->buffer();
1532
1533                         lyx::textclass_type const old_class =
1534                                 buffer->params().textclass;
1535
1536                         loadTextclass(argument);
1537
1538                         std::pair<bool, lyx::textclass_type> const tc_pair =
1539                                 textclasslist.numberOfClass(argument);
1540
1541                         if (!tc_pair.first)
1542                                 break;
1543
1544                         lyx::textclass_type const new_class = tc_pair.second;
1545                         if (old_class == new_class)
1546                                 // nothing to do
1547                                 break;
1548
1549                         lyx_view_->message(_("Converting document to new document class..."));
1550                         recordUndoFullDocument(view());
1551                         buffer->params().textclass = new_class;
1552                         StableDocIterator backcur(view()->cursor());
1553                         ErrorList & el = buffer->errorList("Class Switch");
1554                         lyx::cap::switchBetweenClasses(
1555                                 old_class, new_class,
1556                                 static_cast<InsetText &>(buffer->inset()), el);
1557
1558                         view()->setCursor(backcur.asDocIterator(&(buffer->inset())));
1559
1560                         buffer->errors("Class Switch");
1561                         updateLabels(*buffer);
1562                         updateforce = true;
1563                         break;
1564                 }
1565
1566                 case LFUN_TEXTCLASS_LOAD:
1567                         loadTextclass(argument);
1568                         break;
1569
1570                 case LFUN_LYXRC_APPLY: {
1571                         LyXRC const lyxrc_orig = lyxrc;
1572
1573                         istringstream ss(argument);
1574                         bool const success = lyxrc.read(ss) == 0;
1575
1576                         if (!success) {
1577                                 lyxerr << "Warning in LFUN_LYXRC_APPLY!\n"
1578                                        << "Unable to read lyxrc data"
1579                                        << endl;
1580                                 break;
1581                         }
1582
1583                         actOnUpdatedPrefs(lyxrc_orig, lyxrc);
1584                         break;
1585                 }
1586
1587                 default: {
1588                         view()->cursor().dispatch(cmd);
1589                         updateforce |= view()->cursor().result().update();
1590                         if (!view()->cursor().result().dispatched())
1591                                 updateforce |= view()->dispatch(cmd);
1592                         break;
1593                 }
1594                 }
1595
1596                 if (view()->buffer()) {
1597                         // Redraw screen unless explicitly told otherwise.
1598                         // This also initializes the position cache for all insets
1599                         // in (at least partially) visible top-level paragraphs.
1600                         if (updateforce)
1601                                 view()->update(Update::FitCursor | Update::Force);
1602                         else if (update)
1603                                 view()->update(Update::FitCursor);
1604
1605                         lyx_view_->redrawWorkArea();
1606
1607                         // if we executed a mutating lfun, mark the buffer as dirty
1608                         if (flag.enabled()
1609                             && !lyxaction.funcHasFlag(cmd.action, LyXAction::NoBuffer)
1610                             && !lyxaction.funcHasFlag(cmd.action, LyXAction::ReadOnly))
1611                                 view()->buffer()->markDirty();
1612
1613                         if (view()->cursor().inTexted()) {
1614                                 lyx_view_->updateLayoutChoice();
1615                         }
1616                 }
1617         }
1618         if (!quitting)
1619                 // FIXME UNICODE: _() does not support anything but ascii.
1620                 // Do we need a lyx::to_ascii() method?
1621                 sendDispatchMessage(getMessage(), cmd);
1622 }
1623
1624
1625 void LyXFunc::sendDispatchMessage(docstring const & msg, FuncRequest const & cmd)
1626 {
1627         /* When an action did not originate from the UI/kbd, it makes
1628          * sense to avoid updating the GUI. It turns out that this
1629          * fixes bug 1941, for reasons that are described here:
1630          * http://bugzilla.lyx.org/show_bug.cgi?id=1941#c4
1631          */
1632         if (cmd.origin != FuncRequest::INTERNAL) {
1633                 lyx_view_->updateMenubar();
1634                 lyx_view_->updateToolbars();
1635         }
1636
1637         const bool verbose = (cmd.origin == FuncRequest::UI
1638                               || cmd.origin == FuncRequest::COMMANDBUFFER);
1639
1640         if (cmd.action == LFUN_SELF_INSERT || !verbose) {
1641                 lyxerr[Debug::ACTION] << "dispatch msg is " << lyx::to_utf8(msg) << endl;
1642                 if (!msg.empty())
1643                         lyx_view_->message(msg);
1644                 return;
1645         }
1646
1647         docstring dispatch_msg = msg;
1648         if (!dispatch_msg.empty())
1649                 dispatch_msg += ' ';
1650
1651         string comname = lyxaction.getActionName(cmd.action);
1652
1653         bool argsadded = false;
1654
1655         if (!cmd.argument().empty()) {
1656                 if (cmd.action != LFUN_UNKNOWN_ACTION) {
1657                         comname += ' ' + lyx::to_utf8(cmd.argument());
1658                         argsadded = true;
1659                 }
1660         }
1661
1662         string const shortcuts = theTopLevelKeymap().printbindings(cmd);
1663
1664         if (!shortcuts.empty())
1665                 comname += ": " + shortcuts;
1666         else if (!argsadded && !cmd.argument().empty())
1667                 comname += ' ' + lyx::to_utf8(cmd.argument());
1668
1669         if (!comname.empty()) {
1670                 comname = rtrim(comname);
1671                 dispatch_msg += lyx::from_utf8('(' + rtrim(comname) + ')');
1672         }
1673
1674         lyxerr[Debug::ACTION] << "verbose dispatch msg "
1675                 << lyx::to_utf8(dispatch_msg) << endl;
1676         if (!dispatch_msg.empty())
1677                 lyx_view_->message(dispatch_msg);
1678 }
1679
1680
1681 void LyXFunc::menuNew(string const & name, bool fromTemplate)
1682 {
1683         string initpath = lyxrc.document_path;
1684         string filename(name);
1685
1686         if (view()->buffer()) {
1687                 string const trypath = lyx_view_->buffer()->filePath();
1688                 // If directory is writeable, use this as default.
1689                 if (isDirWriteable(trypath))
1690                         initpath = trypath;
1691         }
1692
1693         static int newfile_number;
1694
1695         if (filename.empty()) {
1696                 filename = addName(lyxrc.document_path,
1697                             "newfile" + convert<string>(++newfile_number) + ".lyx");
1698                 while (theBufferList().exists(filename) || fs::is_readable(filename)) {
1699                         ++newfile_number;
1700                         filename = addName(lyxrc.document_path,
1701                                            "newfile" +  convert<string>(newfile_number) +
1702                                     ".lyx");
1703                 }
1704         }
1705
1706         // The template stuff
1707         string templname;
1708         if (fromTemplate) {
1709                 FileDialog fileDlg(_("Select template file"),
1710                         LFUN_SELECT_FILE_SYNC,
1711                         make_pair(_("Documents|#o#O"), lyx::from_utf8(lyxrc.document_path)),
1712                         make_pair(_("Templates|#T#t"), lyx::from_utf8(lyxrc.template_path)));
1713
1714                 FileDialog::Result result =
1715                         fileDlg.open(lyx::from_utf8(lyxrc.template_path),
1716                                      FileFilterList(_("LyX Documents (*.lyx)")),
1717                                      docstring());
1718
1719                 if (result.first == FileDialog::Later)
1720                         return;
1721                 if (result.second.empty())
1722                         return;
1723                 templname = lyx::to_utf8(result.second);
1724         }
1725
1726         Buffer * const b = newFile(filename, templname, !name.empty());
1727         if (b)
1728                 lyx_view_->setBuffer(b);
1729 }
1730
1731
1732 void LyXFunc::open(string const & fname)
1733 {
1734         string initpath = lyxrc.document_path;
1735
1736         if (view()->buffer()) {
1737                 string const trypath = lyx_view_->buffer()->filePath();
1738                 // If directory is writeable, use this as default.
1739                 if (isDirWriteable(trypath))
1740                         initpath = trypath;
1741         }
1742
1743         string filename;
1744
1745         if (fname.empty()) {
1746                 FileDialog fileDlg(_("Select document to open"),
1747                         LFUN_FILE_OPEN,
1748                         make_pair(_("Documents|#o#O"), lyx::from_utf8(lyxrc.document_path)),
1749                         make_pair(_("Examples|#E#e"), lyx::from_utf8(addPath(package().system_support(), "examples"))));
1750
1751                 FileDialog::Result result =
1752                         fileDlg.open(lyx::from_utf8(initpath),
1753                                      FileFilterList(_("LyX Documents (*.lyx)")),
1754                                      docstring());
1755
1756                 if (result.first == FileDialog::Later)
1757                         return;
1758
1759                 filename = lyx::to_utf8(result.second);
1760
1761                 // check selected filename
1762                 if (filename.empty()) {
1763                         lyx_view_->message(_("Canceled."));
1764                         return;
1765                 }
1766         } else
1767                 filename = fname;
1768
1769         // get absolute path of file and add ".lyx" to the filename if
1770         // necessary
1771         string const fullpath = fileSearch(string(), filename, "lyx");
1772         if (!fullpath.empty()) {
1773                 filename = fullpath;
1774         }
1775
1776         docstring const disp_fn = makeDisplayPath(filename);
1777
1778         // if the file doesn't exist, let the user create one
1779         if (!fs::exists(filename)) {
1780                 // the user specifically chose this name. Believe him.
1781                 Buffer * const b = newFile(filename, string(), true);
1782                 if (b)
1783                         lyx_view_->setBuffer(b);
1784                 return;
1785         }
1786
1787         lyx_view_->message(bformat(_("Opening document %1$s..."), disp_fn));
1788
1789         docstring str2;
1790         if (lyx_view_->loadLyXFile(filename)) {
1791                 str2 = bformat(_("Document %1$s opened."), disp_fn);
1792         } else {
1793                 str2 = bformat(_("Could not open document %1$s"), disp_fn);
1794         }
1795         lyx_view_->message(str2);
1796 }
1797
1798
1799 void LyXFunc::doImport(string const & argument)
1800 {
1801         string format;
1802         string filename = split(argument, format, ' ');
1803
1804         lyxerr[Debug::INFO] << "LyXFunc::doImport: " << format
1805                             << " file: " << filename << endl;
1806
1807         // need user interaction
1808         if (filename.empty()) {
1809                 string initpath = lyxrc.document_path;
1810
1811                 if (view()->buffer()) {
1812                         string const trypath = lyx_view_->buffer()->filePath();
1813                         // If directory is writeable, use this as default.
1814                         if (isDirWriteable(trypath))
1815                                 initpath = trypath;
1816                 }
1817
1818                 docstring const text = bformat(_("Select %1$s file to import"),
1819                         formats.prettyName(format));
1820
1821                 FileDialog fileDlg(text,
1822                         LFUN_BUFFER_IMPORT,
1823                         make_pair(_("Documents|#o#O"), lyx::from_utf8(lyxrc.document_path)),
1824                         make_pair(_("Examples|#E#e"),
1825                                   lyx::from_utf8(addPath(package().system_support(), "examples"))));
1826
1827                 docstring filter = formats.prettyName(format);
1828                 filter += " (*.";
1829                 // FIXME UNICODE
1830                 filter += lyx::from_utf8(formats.extension(format));
1831                 filter += ')';
1832
1833                 FileDialog::Result result =
1834                         fileDlg.open(lyx::from_utf8(initpath),
1835                                      FileFilterList(filter),
1836                                      docstring());
1837
1838                 if (result.first == FileDialog::Later)
1839                         return;
1840
1841                 filename = lyx::to_utf8(result.second);
1842
1843                 // check selected filename
1844                 if (filename.empty())
1845                         lyx_view_->message(_("Canceled."));
1846         }
1847
1848         if (filename.empty())
1849                 return;
1850
1851         // get absolute path of file
1852         filename = makeAbsPath(filename);
1853
1854         string const lyxfile = changeExtension(filename, ".lyx");
1855
1856         // Check if the document already is open
1857         if (lyx::use_gui && theBufferList().exists(lyxfile)) {
1858                 if (!theBufferList().close(theBufferList().getBuffer(lyxfile), true)) {
1859                         lyx_view_->message(_("Canceled."));
1860                         return;
1861                 }
1862         }
1863
1864         // if the file exists already, and we didn't do
1865         // -i lyx thefile.lyx, warn
1866         if (fs::exists(lyxfile) && filename != lyxfile) {
1867                 docstring const file = makeDisplayPath(lyxfile, 30);
1868
1869                 docstring text = bformat(_("The document %1$s already exists.\n\n"
1870                                                      "Do you want to over-write that document?"), file);
1871                 int const ret = Alert::prompt(_("Over-write document?"),
1872                         text, 0, 1, _("&Over-write"), _("&Cancel"));
1873
1874                 if (ret == 1) {
1875                         lyx_view_->message(_("Canceled."));
1876                         return;
1877                 }
1878         }
1879
1880         ErrorList errorList;
1881         Importer::Import(lyx_view_, filename, format, errorList);
1882         // FIXME (Abdel 12/08/06): Is there a need to display the error list here?
1883 }
1884
1885
1886 void LyXFunc::closeBuffer()
1887 {
1888         // save current cursor position
1889         LyX::ref().session().saveFilePosition(lyx_view_->buffer()->fileName(),
1890                 boost::tie(view()->cursor().pit(), view()->cursor().pos()) );
1891         if (theBufferList().close(lyx_view_->buffer(), true) && !quitting) {
1892                 if (theBufferList().empty()) {
1893                         // need this otherwise SEGV may occur while
1894                         // trying to set variables that don't exist
1895                         // since there's no current buffer
1896                         lyx_view_->getDialogs().hideBufferDependent();
1897                 } else {
1898                         lyx_view_->setBuffer(theBufferList().first());
1899                 }
1900         }
1901 }
1902
1903
1904 // Each "lyx_view_" should have it's own message method. lyxview and
1905 // the minibuffer would use the minibuffer, but lyxserver would
1906 // send an ERROR signal to its client.  Alejandro 970603
1907 // This function is bit problematic when it comes to NLS, to make the
1908 // lyx servers client be language indepenent we must not translate
1909 // strings sent to this func.
1910 void LyXFunc::setErrorMessage(docstring const & m) const
1911 {
1912         dispatch_buffer = m;
1913         errorstat = true;
1914 }
1915
1916
1917 void LyXFunc::setMessage(docstring const & m) const
1918 {
1919         dispatch_buffer = m;
1920 }
1921
1922
1923 string const LyXFunc::viewStatusMessage()
1924 {
1925         // When meta-fake key is pressed, show the key sequence so far + "M-".
1926         if (wasMetaKey())
1927                 return keyseq->print() + "M-";
1928
1929         // Else, when a non-complete key sequence is pressed,
1930         // show the available options.
1931         if (keyseq->length() > 0 && !keyseq->deleted())
1932                 return keyseq->printOptions();
1933
1934         if (!view()->buffer())
1935                 return lyx::to_utf8(_("Welcome to LyX!"));
1936
1937         return view()->cursor().currentState();
1938 }
1939
1940
1941 BufferView * LyXFunc::view() const
1942 {
1943         BOOST_ASSERT(lyx_view_);
1944         return lyx_view_->view();
1945 }
1946
1947
1948 bool LyXFunc::wasMetaKey() const
1949 {
1950         return (meta_fake_bit != key_modifier::none);
1951 }
1952
1953
1954 namespace {
1955
1956 void actOnUpdatedPrefs(LyXRC const & lyxrc_orig, LyXRC const & lyxrc_new)
1957 {
1958         // Why the switch you might ask. It is a trick to ensure that all
1959         // the elements in the LyXRCTags enum is handled. As you can see
1960         // there are no breaks at all. So it is just a huge fall-through.
1961         // The nice thing is that we will get a warning from the compiler
1962         // if we forget an element.
1963         LyXRC::LyXRCTags tag = LyXRC::RC_LAST;
1964         switch (tag) {
1965         case LyXRC::RC_ACCEPT_COMPOUND:
1966         case LyXRC::RC_ALT_LANG:
1967         case LyXRC::RC_ASCIIROFF_COMMAND:
1968         case LyXRC::RC_ASCII_LINELEN:
1969         case LyXRC::RC_AUTOREGIONDELETE:
1970         case LyXRC::RC_AUTORESET_OPTIONS:
1971         case LyXRC::RC_AUTOSAVE:
1972         case LyXRC::RC_AUTO_NUMBER:
1973         case LyXRC::RC_BACKUPDIR_PATH:
1974         case LyXRC::RC_BIBTEX_COMMAND:
1975         case LyXRC::RC_BINDFILE:
1976         case LyXRC::RC_CHECKLASTFILES:
1977         case LyXRC::RC_USELASTFILEPOS:
1978         case LyXRC::RC_LOADSESSION:
1979         case LyXRC::RC_CHKTEX_COMMAND:
1980         case LyXRC::RC_CONVERTER:
1981         case LyXRC::RC_COPIER:
1982         case LyXRC::RC_CURSOR_FOLLOWS_SCROLLBAR:
1983         case LyXRC::RC_CUSTOM_EXPORT_COMMAND:
1984         case LyXRC::RC_CUSTOM_EXPORT_FORMAT:
1985         case LyXRC::RC_DATE_INSERT_FORMAT:
1986         case LyXRC::RC_DEFAULT_LANGUAGE:
1987         case LyXRC::RC_DEFAULT_PAPERSIZE:
1988         case LyXRC::RC_DIALOGS_ICONIFY_WITH_MAIN:
1989         case LyXRC::RC_DISPLAY_GRAPHICS:
1990         case LyXRC::RC_DOCUMENTPATH:
1991                 if (lyxrc_orig.document_path != lyxrc_new.document_path) {
1992                         if (fs::exists(lyxrc_new.document_path) &&
1993                             fs::is_directory(lyxrc_new.document_path)) {
1994                                 using lyx::support::package;
1995                                 package().document_dir() = lyxrc.document_path;
1996                         }
1997                 }
1998         case LyXRC::RC_ESC_CHARS:
1999         case LyXRC::RC_FONT_ENCODING:
2000         case LyXRC::RC_FORMAT:
2001         case LyXRC::RC_INDEX_COMMAND:
2002         case LyXRC::RC_INPUT:
2003         case LyXRC::RC_KBMAP:
2004         case LyXRC::RC_KBMAP_PRIMARY:
2005         case LyXRC::RC_KBMAP_SECONDARY:
2006         case LyXRC::RC_LABEL_INIT_LENGTH:
2007         case LyXRC::RC_LANGUAGE_AUTO_BEGIN:
2008         case LyXRC::RC_LANGUAGE_AUTO_END:
2009         case LyXRC::RC_LANGUAGE_COMMAND_BEGIN:
2010         case LyXRC::RC_LANGUAGE_COMMAND_END:
2011         case LyXRC::RC_LANGUAGE_COMMAND_LOCAL:
2012         case LyXRC::RC_LANGUAGE_GLOBAL_OPTIONS:
2013         case LyXRC::RC_LANGUAGE_PACKAGE:
2014         case LyXRC::RC_LANGUAGE_USE_BABEL:
2015         case LyXRC::RC_MAKE_BACKUP:
2016         case LyXRC::RC_MARK_FOREIGN_LANGUAGE:
2017         case LyXRC::RC_NUMLASTFILES:
2018         case LyXRC::RC_PATH_PREFIX:
2019                 if (lyxrc_orig.path_prefix != lyxrc_new.path_prefix) {
2020                         using lyx::support::prependEnvPath;
2021                         prependEnvPath("PATH", lyxrc.path_prefix);
2022                 }
2023         case LyXRC::RC_PERS_DICT:
2024         case LyXRC::RC_POPUP_BOLD_FONT:
2025         case LyXRC::RC_POPUP_FONT_ENCODING:
2026         case LyXRC::RC_POPUP_NORMAL_FONT:
2027         case LyXRC::RC_PREVIEW:
2028         case LyXRC::RC_PREVIEW_HASHED_LABELS:
2029         case LyXRC::RC_PREVIEW_SCALE_FACTOR:
2030         case LyXRC::RC_PRINTCOLLCOPIESFLAG:
2031         case LyXRC::RC_PRINTCOPIESFLAG:
2032         case LyXRC::RC_PRINTER:
2033         case LyXRC::RC_PRINTEVENPAGEFLAG:
2034         case LyXRC::RC_PRINTEXSTRAOPTIONS:
2035         case LyXRC::RC_PRINTFILEEXTENSION:
2036         case LyXRC::RC_PRINTLANDSCAPEFLAG:
2037         case LyXRC::RC_PRINTODDPAGEFLAG:
2038         case LyXRC::RC_PRINTPAGERANGEFLAG:
2039         case LyXRC::RC_PRINTPAPERDIMENSIONFLAG:
2040         case LyXRC::RC_PRINTPAPERFLAG:
2041         case LyXRC::RC_PRINTREVERSEFLAG:
2042         case LyXRC::RC_PRINTSPOOL_COMMAND:
2043         case LyXRC::RC_PRINTSPOOL_PRINTERPREFIX:
2044         case LyXRC::RC_PRINTTOFILE:
2045         case LyXRC::RC_PRINTTOPRINTER:
2046         case LyXRC::RC_PRINT_ADAPTOUTPUT:
2047         case LyXRC::RC_PRINT_COMMAND:
2048         case LyXRC::RC_RTL_SUPPORT:
2049         case LyXRC::RC_SCREEN_DPI:
2050         case LyXRC::RC_SCREEN_FONT_ENCODING:
2051         case LyXRC::RC_SCREEN_FONT_ROMAN:
2052         case LyXRC::RC_SCREEN_FONT_ROMAN_FOUNDRY:
2053         case LyXRC::RC_SCREEN_FONT_SANS:
2054         case LyXRC::RC_SCREEN_FONT_SANS_FOUNDRY:
2055         case LyXRC::RC_SCREEN_FONT_SCALABLE:
2056         case LyXRC::RC_SCREEN_FONT_SIZES:
2057         case LyXRC::RC_SCREEN_FONT_TYPEWRITER:
2058         case LyXRC::RC_SCREEN_FONT_TYPEWRITER_FOUNDRY:
2059         case LyXRC::RC_SCREEN_GEOMETRY_HEIGHT:
2060         case LyXRC::RC_SCREEN_GEOMETRY_WIDTH:
2061         case LyXRC::RC_SCREEN_GEOMETRY_XYSAVED:
2062         case LyXRC::RC_SCREEN_ZOOM:
2063         case LyXRC::RC_SERVERPIPE:
2064         case LyXRC::RC_SET_COLOR:
2065         case LyXRC::RC_SHOW_BANNER:
2066         case LyXRC::RC_SPELL_COMMAND:
2067         case LyXRC::RC_TEMPDIRPATH:
2068         case LyXRC::RC_TEMPLATEPATH:
2069         case LyXRC::RC_TEX_ALLOWS_SPACES:
2070         case LyXRC::RC_TEX_EXPECTS_WINDOWS_PATHS:
2071                 if (lyxrc_orig.windows_style_tex_paths != lyxrc_new.windows_style_tex_paths) {
2072                         namespace os = lyx::support::os;
2073                         os::windows_style_tex_paths(lyxrc_new.windows_style_tex_paths);
2074                 }
2075         case LyXRC::RC_UIFILE:
2076         case LyXRC::RC_USER_EMAIL:
2077         case LyXRC::RC_USER_NAME:
2078         case LyXRC::RC_USETEMPDIR:
2079         case LyXRC::RC_USE_ALT_LANG:
2080         case LyXRC::RC_USE_ESC_CHARS:
2081         case LyXRC::RC_USE_INP_ENC:
2082         case LyXRC::RC_USE_PERS_DICT:
2083         case LyXRC::RC_USE_SPELL_LIB:
2084         case LyXRC::RC_VIEWDVI_PAPEROPTION:
2085         case LyXRC::RC_VIEWER:
2086         case LyXRC::RC_LAST:
2087                 break;
2088         }
2089 }
2090
2091 } // namespace anon