src/Text3.cpp

   1 /**
   2  * \file Text3.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Asger Alstrup
   7  * \author Lars Gullik Bjønnes
   8  * \author Alfredo Braunstein
   9  * \author Angus Leeming
  10  * \author John Levon
  11  * \author André Pönitz
  12  *
  13  * Full author contact details are available in file CREDITS.
  14  */
  15
  16 #include <config.h>
  17
  18 #include "Text.h"
  19
  20 #include "Bidi.h"
  21 #include "BranchList.h"
  22 #include "FloatList.h"
  23 #include "FuncStatus.h"
  24 #include "Buffer.h"
  25 #include "buffer_funcs.h"
  26 #include "BufferParams.h"
  27 #include "BufferView.h"
  28 #include "Changes.h"
  29 #include "Cursor.h"
  30 #include "CutAndPaste.h"
  31 #include "DispatchResult.h"
  32 #include "ErrorList.h"
  33 #include "factory.h"
  34 #include "FuncRequest.h"
  35 #include "InsetList.h"
  36 #include "Intl.h"
  37 #include "Language.h"
  38 #include "Layout.h"
  39 #include "LyXAction.h"
  40 #include "LyX.h"
  41 #include "Lexer.h"
  42 #include "LyXRC.h"
  43 #include "Paragraph.h"
  44 #include "ParagraphParameters.h"
  45 #include "SpellChecker.h"
  46 #include "TextClass.h"
  47 #include "TextMetrics.h"
  48 #include "VSpace.h"
  49 #include "WordLangTuple.h"
  50
  51 #include "frontends/Application.h"
  52 #include "frontends/Clipboard.h"
  53 #include "frontends/Selection.h"
  54
  55 #include "insets/InsetCollapsable.h"
  56 #include "insets/InsetCommand.h"
  57 #include "insets/InsetExternal.h"
  58 #include "insets/InsetFloat.h"
  59 #include "insets/InsetFloatList.h"
  60 #include "insets/InsetGraphics.h"
  61 #include "insets/InsetGraphicsParams.h"
  62 #include "insets/InsetNewline.h"
  63 #include "insets/InsetQuotes.h"
  64 #include "insets/InsetSpecialChar.h"
  65 #include "insets/InsetText.h"
  66 #include "insets/InsetWrap.h"
  67
  68 #include "support/convert.h"
  69 #include "support/debug.h"
  70 #include "support/gettext.h"
  71 #include "support/lstrings.h"
  72 #include "support/lyxtime.h"
  73 #include "support/os.h"
  74
  75 #include "mathed/InsetMathHull.h"
  76 #include "mathed/MathMacroTemplate.h"
  77
  78 #include <boost/next_prior.hpp>
  79
  80 #include <clocale>
  81 #include <sstream>
  82
  83 using namespace std;
  84 using namespace lyx::support;
  85
  86 namespace lyx {
  87
  88 using cap::copySelection;
  89 using cap::cutSelection;
  90 using cap::pasteFromStack;
  91 using cap::pasteClipboardText;
  92 using cap::pasteClipboardGraphics;
  93 using cap::replaceSelection;
  94 using cap::grabAndEraseSelection;
  95 using cap::selClearOrDel;
  96
  97 // globals...
  98 static Font freefont(ignore_font, ignore_language);
  99 static bool toggleall = false;
 100
 101 static void toggleAndShow(Cursor & cur, Text * text,
 102         Font const & font, bool toggleall = true)
 103 {
 104         text->toggleFree(cur, font, toggleall);
 105
 106         if (font.language() != ignore_language ||
 107             font.fontInfo().number() != FONT_IGNORE) {
 108                 TextMetrics const & tm = cur.bv().textMetrics(text);
 109                 if (cur.boundary() != tm.isRTLBoundary(cur.pit(), cur.pos(),
 110                                                        cur.real_current_font))
 111                         text->setCursor(cur, cur.pit(), cur.pos(),
 112                                         false, !cur.boundary());
 113         }
 114 }
 115
 116
 117 static void moveCursor(Cursor & cur, bool selecting)
 118 {
 119         if (selecting || cur.mark())
 120                 cur.setSelection();
 121 }
 122
 123
 124 static void finishChange(Cursor & cur, bool selecting)
 125 {
 126         cur.finishUndo();
 127         moveCursor(cur, selecting);
 128 }
 129
 130
 131 static void mathDispatch(Cursor & cur, FuncRequest const & cmd, bool display)
 132 {
 133         cur.recordUndo();
 134         docstring sel = cur.selectionAsString(false);
 135
 136         // It may happen that sel is empty but there is a selection
 137         replaceSelection(cur);
 138
 139         // Is this a valid formula?
 140         bool valid = true;
 141
 142         if (sel.empty()) {
 143 #ifdef ENABLE_ASSERTIONS
 144                 const int old_pos = cur.pos();
 145 #endif
 146                 cur.insert(new InsetMathHull(cur.buffer(), hullSimple));
 147 #ifdef ENABLE_ASSERTIONS
 148                 LASSERT(old_pos == cur.pos(), /**/);
 149 #endif
 150                 cur.nextInset()->edit(cur, true);
 151                 // don't do that also for LFUN_MATH_MODE
 152                 // unless you want end up with always changing
 153                 // to mathrm when opening an inlined inset --
 154                 // I really hate "LyXfunc overloading"...
 155                 if (display)
 156                         cur.dispatch(FuncRequest(LFUN_MATH_DISPLAY));
 157                 // Avoid an unnecessary undo step if cmd.argument
 158                 // is empty
 159                 if (!cmd.argument().empty())
 160                         cur.dispatch(FuncRequest(LFUN_MATH_INSERT,
 161                                                  cmd.argument()));
 162         } else {
 163                 // create a macro if we see "\\newcommand"
 164                 // somewhere, and an ordinary formula
 165                 // otherwise
 166                 if (sel.find(from_ascii("\\newcommand")) == string::npos
 167                                 && sel.find(from_ascii("\\newlyxcommand")) == string::npos
 168                                 && sel.find(from_ascii("\\def")) == string::npos)
 169                 {
 170                         InsetMathHull * formula = new InsetMathHull(cur.buffer());
 171                         string const selstr = to_utf8(sel);
 172                         istringstream is(selstr);
 173                         Lexer lex;
 174                         lex.setStream(is);
 175                         if (!formula->readQuiet(lex)) {
 176                                 // No valid formula, let's try with delims
 177                                 is.str("$" + selstr + "$");
 178                                 lex.setStream(is);
 179                                 if (!formula->readQuiet(lex)) {
 180                                         // Still not valid, leave it as is
 181                                         valid = false;
 182                                         delete formula;
 183                                         cur.insert(sel);
 184                                 } else
 185                                         cur.insert(formula);
 186                         } else
 187                                 cur.insert(formula);
 188                 } else {
 189                         cur.insert(new MathMacroTemplate(cur.buffer(), sel));
 190                 }
 191         }
 192         if (valid)
 193                 cur.message(from_utf8(N_("Math editor mode")));
 194         else
 195                 cur.message(from_utf8(N_("No valid math formula")));
 196 }
 197
 198
 199 void regexpDispatch(Cursor & cur, FuncRequest const & cmd)
 200 {
 201         LASSERT(cmd.action() == LFUN_REGEXP_MODE, return);
 202         if (cur.inRegexped()) {
 203                 cur.message(_("Already in regular expression mode"));
 204                 return;
 205         }
 206         cur.recordUndo();
 207         docstring sel = cur.selectionAsString(false);
 208
 209         // It may happen that sel is empty but there is a selection
 210         replaceSelection(cur);
 211
 212         cur.insert(new InsetMathHull(cur.buffer(), hullRegexp));
 213         cur.nextInset()->edit(cur, true);
 214         cur.niceInsert(sel);
 215
 216         cur.message(_("Regexp editor mode"));
 217 }
 218
 219
 220 static void specialChar(Cursor & cur, InsetSpecialChar::Kind kind)
 221 {
 222         cur.recordUndo();
 223         cap::replaceSelection(cur);
 224         cur.insert(new InsetSpecialChar(kind));
 225         cur.posForward();
 226 }
 227
 228
 229 static bool doInsertInset(Cursor & cur, Text * text,
 230         FuncRequest const & cmd, bool edit, bool pastesel)
 231 {
 232         Buffer & buffer = cur.bv().buffer();
 233         BufferParams const & bparams = buffer.params();
 234         Inset * inset = createInset(&buffer, cmd);
 235         if (!inset)
 236                 return false;
 237
 238         if (InsetCollapsable * ci = inset->asInsetCollapsable())
 239                 ci->setButtonLabel();
 240
 241         cur.recordUndo();
 242         if (cmd.action() == LFUN_INDEX_INSERT) {
 243                 docstring ds = subst(text->getStringToIndex(cur), '\n', ' ');
 244                 text->insertInset(cur, inset);
 245                 if (edit)
 246                         inset->edit(cur, true);
 247                 // Now put this into inset
 248                 cur.text()->insertStringAsLines(cur, ds, cur.current_font);
 249                 cur.leaveInset(*inset);
 250                 return true;
 251         }
 252
 253         bool gotsel = false;
 254         if (cur.selection()) {
 255                 cutSelection(cur, false, pastesel);
 256                 cur.clearSelection();
 257                 gotsel = true;
 258         }
 259         text->insertInset(cur, inset);
 260
 261         if (edit)
 262                 inset->edit(cur, true);
 263
 264         if (!gotsel || !pastesel)
 265                 return true;
 266
 267         pasteFromStack(cur, cur.buffer()->errorList("Paste"), 0);
 268         cur.buffer()->errors("Paste");
 269         cur.clearSelection(); // bug 393
 270         cur.finishUndo();
 271         InsetText * insetText = dynamic_cast<InsetText *>(inset);
 272         if (insetText) {
 273                 insetText->fixParagraphsFont();
 274                 if (!insetText->allowMultiPar() || cur.lastpit() == 0) {
 275                         // reset first par to default
 276                         cur.text()->paragraphs().begin()
 277                                 ->setPlainOrDefaultLayout(bparams.documentClass());
 278                         cur.pos() = 0;
 279                         cur.pit() = 0;
 280                         // Merge multiple paragraphs -- hack
 281                         while (cur.lastpit() > 0)
 282                                 mergeParagraph(bparams, cur.text()->paragraphs(), 0);
 283                         cur.leaveInset(*inset);
 284                 }
 285         } else {
 286                 cur.leaveInset(*inset);
 287                 // reset surrounding par to default
 288                 DocumentClass const & dc = bparams.documentClass();
 289                 docstring const layoutname = inset->usePlainLayout()
 290                         ? dc.plainLayoutName()
 291                         : dc.defaultLayoutName();
 292                 text->setLayout(cur, layoutname);
 293         }
 294         return true;
 295 }
 296
 297
 298 string const freefont2string()
 299 {
 300         return freefont.toString(toggleall);
 301 }
 302
 303
 304 /// the type of outline operation
 305 enum OutlineOp {
 306         OutlineUp, // Move this header with text down
 307         OutlineDown,   // Move this header with text up
 308         OutlineIn, // Make this header deeper
 309         OutlineOut // Make this header shallower
 310 };
 311
 312
 313 static void outline(OutlineOp mode, Cursor & cur)
 314 {
 315         Buffer & buf = *cur.buffer();
 316         pit_type & pit = cur.pit();
 317         ParagraphList & pars = buf.text().paragraphs();
 318         ParagraphList::iterator const bgn = pars.begin();
 319         // The first paragraph of the area to be copied:
 320         ParagraphList::iterator start = boost::next(bgn, pit);
 321         // The final paragraph of area to be copied:
 322         ParagraphList::iterator finish = start;
 323         ParagraphList::iterator const end = pars.end();
 324
 325         DocumentClass const & tc = buf.params().documentClass();
 326
 327         int const thistoclevel = start->layout().toclevel;
 328         int toclevel;
 329
 330         // Move out (down) from this section header
 331         if (finish != end)
 332                 ++finish;
 333
 334         // Seek the one (on same level) below
 335         for (; finish != end; ++finish) {
 336                 toclevel = finish->layout().toclevel;
 337                 if (toclevel != Layout::NOT_IN_TOC && toclevel <= thistoclevel)
 338                         break;
 339         }
 340
 341         switch (mode) {
 342                 case OutlineUp: {
 343                         if (start == pars.begin())
 344                                 // Nothing to move.
 345                                 return;
 346                         ParagraphList::iterator dest = start;
 347                         // Move out (up) from this header
 348                         if (dest == bgn)
 349                                 return;
 350                         // Search previous same-level header above
 351                         do {
 352                                 --dest;
 353                                 toclevel = dest->layout().toclevel;
 354                         } while(dest != bgn
 355                                 && (toclevel == Layout::NOT_IN_TOC
 356                                     || toclevel > thistoclevel));
 357                         // Not found; do nothing
 358                         if (toclevel == Layout::NOT_IN_TOC || toclevel > thistoclevel)
 359                                 return;
 360                         pit_type const newpit = distance(bgn, dest);
 361                         pit_type const len = distance(start, finish);
 362                         pit_type const deletepit = pit + len;
 363                         buf.undo().recordUndo(cur, ATOMIC_UNDO, newpit, deletepit - 1);
 364                         pars.splice(dest, start, finish);
 365                         cur.pit() = newpit;
 366                         break;
 367                 }
 368                 case OutlineDown: {
 369                         if (finish == end)
 370                                 // Nothing to move.
 371                                 return;
 372                         // Go one down from *this* header:
 373                         ParagraphList::iterator dest = boost::next(finish, 1);
 374                         // Go further down to find header to insert in front of:
 375                         for (; dest != end; ++dest) {
 376                                 toclevel = dest->layout().toclevel;
 377                                 if (toclevel != Layout::NOT_IN_TOC
 378                                       && toclevel <= thistoclevel)
 379                                         break;
 380                         }
 381                         // One such was found:
 382                         pit_type newpit = distance(bgn, dest);
 383                         buf.undo().recordUndo(cur, ATOMIC_UNDO, pit, newpit - 1);
 384                         pit_type const len = distance(start, finish);
 385                         pars.splice(dest, start, finish);
 386                         cur.pit() = newpit - len;
 387                         break;
 388                 }
 389                 case OutlineIn: {
 390                         pit_type const len = distance(start, finish);
 391                         buf.undo().recordUndo(cur, ATOMIC_UNDO, pit, pit + len - 1);
 392                         for (; start != finish; ++start) {
 393                                 toclevel = start->layout().toclevel;
 394                                 if (toclevel == Layout::NOT_IN_TOC)
 395                                         continue;
 396                                 DocumentClass::const_iterator lit = tc.begin();
 397                                 DocumentClass::const_iterator len = tc.end();
 398                                 for (; lit != len; ++lit) {
 399                                         if (lit->toclevel == toclevel + 1 &&
 400                                             start->layout().labeltype == lit->labeltype) {
 401                                                 start->setLayout(*lit);
 402                                                 break;
 403                                         }
 404                                 }
 405                         }
 406                         break;
 407                 }
 408                 case OutlineOut: {
 409                         pit_type const len = distance(start, finish);
 410                         buf.undo().recordUndo(cur, ATOMIC_UNDO, pit, pit + len - 1);
 411                         for (; start != finish; ++start) {
 412                                 toclevel = start->layout().toclevel;
 413                                 if (toclevel == Layout::NOT_IN_TOC)
 414                                         continue;
 415                                 DocumentClass::const_iterator lit = tc.begin();
 416                                 DocumentClass::const_iterator len = tc.end();
 417                                 for (; lit != len; ++lit) {
 418                                         if (lit->toclevel == toclevel - 1 &&
 419                                                 start->layout().labeltype == lit->labeltype) {
 420                                                         start->setLayout(*lit);
 421                                                         break;
 422                                         }
 423                                 }
 424                         }
 425                         break;
 426                 }
 427         }
 428 }
 429
 430
 431 void Text::number(Cursor & cur)
 432 {
 433         FontInfo font = ignore_font;
 434         font.setNumber(FONT_TOGGLE);
 435         toggleAndShow(cur, this, Font(font, ignore_language));
 436 }
 437
 438
 439 bool Text::isRTL(Paragraph const & par) const
 440 {
 441         Buffer const & buffer = owner_->buffer();
 442         return par.isRTL(buffer.params());
 443 }
 444
 445
 446 void Text::dispatch(Cursor & cur, FuncRequest & cmd)
 447 {
 448         LYXERR(Debug::ACTION, "Text::dispatch: cmd: " << cmd);
 449
 450         // Dispatch if the cursor is inside the text. It is not the
 451         // case for context menus (bug 5797).
 452         if (cur.text() != this) {
 453                 cur.undispatched();
 454                 return;
 455         }
 456
 457         BufferView * bv = &cur.bv();
 458         TextMetrics * tm = &bv->textMetrics(this);
 459         if (!tm->contains(cur.pit())) {
 460                 lyx::dispatch(FuncRequest(LFUN_SCREEN_SHOW_CURSOR));
 461                 tm = &bv->textMetrics(this);
 462         }
 463
 464         // FIXME: We use the update flag to indicates wether a singlePar or a
 465         // full screen update is needed. We reset it here but shall we restore it
 466         // at the end?
 467         cur.noScreenUpdate();
 468
 469         LASSERT(cur.text() == this, /**/);
 470         CursorSlice oldTopSlice = cur.top();
 471         bool oldBoundary = cur.boundary();
 472         bool sel = cur.selection();
 473         // Signals that, even if needsUpdate == false, an update of the
 474         // cursor paragraph is required
 475         bool singleParUpdate = lyxaction.funcHasFlag(cmd.action(),
 476                 LyXAction::SingleParUpdate);
 477         // Signals that a full-screen update is required
 478         bool needsUpdate = !(lyxaction.funcHasFlag(cmd.action(),
 479                 LyXAction::NoUpdate) || singleParUpdate);
 480
 481         FuncCode const act = cmd.action();
 482         switch (act) {
 483
 484         case LFUN_PARAGRAPH_MOVE_DOWN: {
 485                 pit_type const pit = cur.pit();
 486                 recUndo(cur, pit, pit + 1);
 487                 cur.finishUndo();
 488                 pars_.swap(pit, pit + 1);
 489                 needsUpdate = true;
 490                 cur.forceBufferUpdate();
 491                 ++cur.pit();
 492                 break;
 493         }
 494
 495         case LFUN_PARAGRAPH_MOVE_UP: {
 496                 pit_type const pit = cur.pit();
 497                 recUndo(cur, pit - 1, pit);
 498                 cur.finishUndo();
 499                 pars_.swap(pit, pit - 1);
 500                 --cur.pit();
 501                 needsUpdate = true;
 502                 cur.forceBufferUpdate();
 503                 break;
 504         }
 505
 506         case LFUN_APPENDIX: {
 507                 Paragraph & par = cur.paragraph();
 508                 bool start = !par.params().startOfAppendix();
 509
 510 // FIXME: The code below only makes sense at top level.
 511 // Should LFUN_APPENDIX be restricted to top-level paragraphs?
 512                 // ensure that we have only one start_of_appendix in this document
 513                 // FIXME: this don't work for multipart document!
 514                 for (pit_type tmp = 0, end = pars_.size(); tmp != end; ++tmp) {
 515                         if (pars_[tmp].params().startOfAppendix()) {
 516                                 recUndo(cur, tmp);
 517                                 pars_[tmp].params().startOfAppendix(false);
 518                                 break;
 519                         }
 520                 }
 521
 522                 cur.recordUndo();
 523                 par.params().startOfAppendix(start);
 524
 525                 // we can set the refreshing parameters now
 526                 cur.forceBufferUpdate();
 527                 break;
 528         }
 529
 530         case LFUN_WORD_DELETE_FORWARD:
 531                 if (cur.selection())
 532                         cutSelection(cur, true, false);
 533                 else
 534                         deleteWordForward(cur);
 535                 finishChange(cur, false);
 536                 break;
 537
 538         case LFUN_WORD_DELETE_BACKWARD:
 539                 if (cur.selection())
 540                         cutSelection(cur, true, false);
 541                 else
 542                         deleteWordBackward(cur);
 543                 finishChange(cur, false);
 544                 break;
 545
 546         case LFUN_LINE_DELETE:
 547                 if (cur.selection())
 548                         cutSelection(cur, true, false);
 549                 else
 550                         tm->deleteLineForward(cur);
 551                 finishChange(cur, false);
 552                 break;
 553
 554         case LFUN_BUFFER_BEGIN:
 555         case LFUN_BUFFER_BEGIN_SELECT:
 556                 needsUpdate |= cur.selHandle(act == LFUN_BUFFER_BEGIN_SELECT);
 557                 if (cur.depth() == 1)
 558                         needsUpdate |= cursorTop(cur);
 559                 else
 560                         cur.undispatched();
 561                 cur.screenUpdateFlags(Update::FitCursor);
 562                 break;
 563
 564         case LFUN_BUFFER_END:
 565         case LFUN_BUFFER_END_SELECT:
 566                 needsUpdate |= cur.selHandle(act == LFUN_BUFFER_END_SELECT);
 567                 if (cur.depth() == 1)
 568                         needsUpdate |= cursorBottom(cur);
 569                 else
 570                         cur.undispatched();
 571                 cur.screenUpdateFlags(Update::FitCursor);
 572                 break;
 573
 574         case LFUN_INSET_BEGIN:
 575         case LFUN_INSET_BEGIN_SELECT:
 576                 needsUpdate |= cur.selHandle(act == LFUN_INSET_BEGIN_SELECT);
 577                 if (cur.depth() == 1 || !cur.top().at_begin())
 578                         needsUpdate |= cursorTop(cur);
 579                 else
 580                         cur.undispatched();
 581                 cur.screenUpdateFlags(Update::FitCursor);
 582                 break;
 583
 584         case LFUN_INSET_END:
 585         case LFUN_INSET_END_SELECT:
 586                 needsUpdate |= cur.selHandle(act == LFUN_INSET_END_SELECT);
 587                 if (cur.depth() == 1 || !cur.top().at_end())
 588                         needsUpdate |= cursorBottom(cur);
 589                 else
 590                         cur.undispatched();
 591                 cur.screenUpdateFlags(Update::FitCursor);
 592                 break;
 593
 594         case LFUN_INSET_SELECT_ALL:
 595                 if (cur.depth() == 1 || !cur.selection() || !cur.selBegin().at_begin()
 596                           || !cur.selEnd().at_end()) {
 597                         needsUpdate |= cur.selHandle(false);
 598                         needsUpdate |= cursorTop(cur);
 599                         needsUpdate |= cur.selHandle(true);
 600                         needsUpdate |= cursorBottom(cur);
 601                 } else
 602                         cur.undispatched();
 603                 cur.screenUpdateFlags(Update::FitCursor);
 604                 break;
 605
 606         case LFUN_CHAR_FORWARD:
 607         case LFUN_CHAR_FORWARD_SELECT:
 608                 //LYXERR0(" LFUN_CHAR_FORWARD[SEL]:\n" << cur);
 609                 needsUpdate |= cur.selHandle(act == LFUN_CHAR_FORWARD_SELECT);
 610                 needsUpdate |= cursorForward(cur);
 611
 612                 if (!needsUpdate && oldTopSlice == cur.top()
 613                                 && cur.boundary() == oldBoundary) {
 614                         cur.undispatched();
 615                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 616
 617                         // we will probably be moving out the inset, so we should execute
 618                         // the depm-mechanism, but only when the cursor has a place to
 619                         // go outside this inset, i.e. in a slice above.
 620                         if (cur.depth() > 1 && cur.pos() == cur.lastpos()
 621                                   && cur.pit() == cur.lastpit()) {
 622                                 // The cursor hasn't changed yet. To give the
 623                                 // DEPM the possibility of doing something we must
 624                                 // provide it with two different cursors.
 625                                 Cursor dummy = cur;
 626                                 dummy.pos() = dummy.pit() = 0;
 627                                 if (cur.bv().checkDepm(dummy, cur))
 628                                         cur.forceBufferUpdate();;
 629                         }
 630                 }
 631                 break;
 632
 633         case LFUN_CHAR_BACKWARD:
 634         case LFUN_CHAR_BACKWARD_SELECT:
 635                 //lyxerr << "handle LFUN_CHAR_BACKWARD[_SELECT]:\n" << cur << endl;
 636                 needsUpdate |= cur.selHandle(act == LFUN_CHAR_BACKWARD_SELECT);
 637                 needsUpdate |= cursorBackward(cur);
 638
 639                 if (!needsUpdate && oldTopSlice == cur.top()
 640                         && cur.boundary() == oldBoundary) {
 641                         cur.undispatched();
 642                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
 643
 644                         // we will probably be moving out the inset, so we should execute
 645                         // the depm-mechanism, but only when the cursor has a place to
 646                         // go outside this inset, i.e. in a slice above.
 647                         if (cur.depth() > 1 && cur.pos() == 0 && cur.pit() == 0) {
 648                                 // The cursor hasn't changed yet. To give the
 649                                 // DEPM the possibility of doing something we must
 650                                 // provide it with two different cursors.
 651                                 Cursor dummy = cur;
 652                                 dummy.pos() = cur.lastpos();
 653                                 dummy.pit() = cur.lastpit();
 654                                 if (cur.bv().checkDepm(dummy, cur))
 655                                         cur.forceBufferUpdate();
 656                         }
 657                 }
 658                 break;
 659
 660         case LFUN_CHAR_LEFT:
 661         case LFUN_CHAR_LEFT_SELECT:
 662                 if (lyxrc.visual_cursor) {
 663                         needsUpdate |= cur.selHandle(act == LFUN_CHAR_LEFT_SELECT);
 664                         needsUpdate |= cursorVisLeft(cur);
 665                         if (!needsUpdate && oldTopSlice == cur.top()
 666                                         && cur.boundary() == oldBoundary) {
 667                                 cur.undispatched();
 668                                 cmd = FuncRequest(LFUN_FINISHED_LEFT);
 669                         }
 670                 } else {
 671                         if (reverseDirectionNeeded(cur)) {
 672                                 cmd.setAction(cmd.action() == LFUN_CHAR_LEFT_SELECT ?
 673                                         LFUN_CHAR_FORWARD_SELECT : LFUN_CHAR_FORWARD);
 674                         } else {
 675                                 cmd.setAction(cmd.action() == LFUN_CHAR_LEFT_SELECT ?
 676                                         LFUN_CHAR_BACKWARD_SELECT : LFUN_CHAR_BACKWARD);
 677                         }
 678                         dispatch(cur, cmd);
 679                         return;
 680                 }
 681                 break;
 682
 683         case LFUN_CHAR_RIGHT:
 684         case LFUN_CHAR_RIGHT_SELECT:
 685                 if (lyxrc.visual_cursor) {
 686                         needsUpdate |= cur.selHandle(cmd.action() == LFUN_CHAR_RIGHT_SELECT);
 687                         needsUpdate |= cursorVisRight(cur);
 688                         if (!needsUpdate && oldTopSlice == cur.top()
 689                                         && cur.boundary() == oldBoundary) {
 690                                 cur.undispatched();
 691                                 cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 692                         }
 693                 } else {
 694                         if (reverseDirectionNeeded(cur)) {
 695                                 cmd.setAction(cmd.action() == LFUN_CHAR_RIGHT_SELECT ?
 696                                         LFUN_CHAR_BACKWARD_SELECT : LFUN_CHAR_BACKWARD);
 697                         } else {
 698                                 cmd.setAction(cmd.action() == LFUN_CHAR_RIGHT_SELECT ?
 699                                         LFUN_CHAR_FORWARD_SELECT : LFUN_CHAR_FORWARD);
 700                         }
 701                         dispatch(cur, cmd);
 702                         return;
 703                 }
 704                 break;
 705
 706
 707         case LFUN_UP_SELECT:
 708         case LFUN_DOWN_SELECT:
 709         case LFUN_UP:
 710         case LFUN_DOWN: {
 711                 // stop/start the selection
 712                 bool select = cmd.action() == LFUN_DOWN_SELECT ||
 713                         cmd.action() == LFUN_UP_SELECT;
 714
 715                 // move cursor up/down
 716                 bool up = cmd.action() == LFUN_UP_SELECT || cmd.action() == LFUN_UP;
 717                 bool const atFirstOrLastRow = cur.atFirstOrLastRow(up);
 718
 719                 if (!atFirstOrLastRow) {
 720                         needsUpdate |= cur.selHandle(select);
 721                         cur.selHandle(select);
 722                         cur.upDownInText(up, needsUpdate);
 723                         needsUpdate |= cur.beforeDispatchCursor().inMathed();
 724                 } else {
 725                         // if the cursor cannot be moved up or down do not remove
 726                         // the selection right now, but wait for the next dispatch.
 727                         if (select)
 728                                 needsUpdate |= cur.selHandle(select);
 729                         cur.upDownInText(up, needsUpdate);
 730                         cur.undispatched();
 731                 }
 732
 733                 break;
 734         }
 735
 736         case LFUN_PARAGRAPH_UP:
 737         case LFUN_PARAGRAPH_UP_SELECT:
 738                 needsUpdate |= cur.selHandle(cmd.action() == LFUN_PARAGRAPH_UP_SELECT);
 739                 needsUpdate |= cursorUpParagraph(cur);
 740                 break;
 741
 742         case LFUN_PARAGRAPH_DOWN:
 743         case LFUN_PARAGRAPH_DOWN_SELECT:
 744                 needsUpdate |= cur.selHandle(cmd.action() == LFUN_PARAGRAPH_DOWN_SELECT);
 745                 needsUpdate |= cursorDownParagraph(cur);
 746                 break;
 747
 748         case LFUN_LINE_BEGIN:
 749         case LFUN_LINE_BEGIN_SELECT:
 750                 needsUpdate |= cur.selHandle(cmd.action() == LFUN_LINE_BEGIN_SELECT);
 751                 needsUpdate |= tm->cursorHome(cur);
 752                 break;
 753
 754         case LFUN_LINE_END:
 755         case LFUN_LINE_END_SELECT:
 756                 needsUpdate |= cur.selHandle(cmd.action() == LFUN_LINE_END_SELECT);
 757                 needsUpdate |= tm->cursorEnd(cur);
 758                 break;
 759
 760         case LFUN_SECTION_SELECT: {
 761                 Buffer const & buf = *cur.buffer();
 762                 pit_type const pit = cur.pit();
 763                 ParagraphList & pars = buf.text().paragraphs();
 764                 ParagraphList::iterator bgn = pars.begin();
 765                 // The first paragraph of the area to be selected:
 766                 ParagraphList::iterator start = boost::next(bgn, pit);
 767                 // The final paragraph of area to be selected:
 768                 ParagraphList::iterator finish = start;
 769                 ParagraphList::iterator end = pars.end();
 770
 771                 int const thistoclevel = start->layout().toclevel;
 772                 if (thistoclevel == Layout::NOT_IN_TOC)
 773                         break;
 774
 775                 cur.pos() = 0;
 776                 Cursor const old_cur = cur;
 777                 needsUpdate |= cur.selHandle(true);
 778
 779                 // Move out (down) from this section header
 780                 if (finish != end)
 781                         ++finish;
 782
 783                 // Seek the one (on same level) below
 784                 for (; finish != end; ++finish, ++cur.pit()) {
 785                         int const toclevel = finish->layout().toclevel;
 786                         if (toclevel != Layout::NOT_IN_TOC && toclevel <= thistoclevel)
 787                                 break;
 788                 }
 789                 cur.pos() = cur.lastpos();
 790
 791                 needsUpdate |= cur != old_cur;
 792                 break;
 793         }
 794
 795         case LFUN_WORD_RIGHT:
 796         case LFUN_WORD_RIGHT_SELECT:
 797                 if (lyxrc.visual_cursor) {
 798                         needsUpdate |= cur.selHandle(cmd.action() == LFUN_WORD_RIGHT_SELECT);
 799                         needsUpdate |= cursorVisRightOneWord(cur);
 800                         if (!needsUpdate && oldTopSlice == cur.top()
 801                                         && cur.boundary() == oldBoundary) {
 802                                 cur.undispatched();
 803                                 cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 804                         }
 805                 } else {
 806                         if (reverseDirectionNeeded(cur)) {
 807                                 cmd.setAction(cmd.action() == LFUN_WORD_RIGHT_SELECT ?
 808                                                 LFUN_WORD_BACKWARD_SELECT : LFUN_WORD_BACKWARD);
 809                         } else {
 810                                 cmd.setAction(cmd.action() == LFUN_WORD_RIGHT_SELECT ?
 811                                                 LFUN_WORD_FORWARD_SELECT : LFUN_WORD_FORWARD);
 812                         }
 813                         dispatch(cur, cmd);
 814                         return;
 815                 }
 816                 break;
 817
 818         case LFUN_WORD_FORWARD:
 819         case LFUN_WORD_FORWARD_SELECT:
 820                 needsUpdate |= cur.selHandle(cmd.action() == LFUN_WORD_FORWARD_SELECT);
 821                 needsUpdate |= cursorForwardOneWord(cur);
 822                 break;
 823
 824         case LFUN_WORD_LEFT:
 825         case LFUN_WORD_LEFT_SELECT:
 826                 if (lyxrc.visual_cursor) {
 827                         needsUpdate |= cur.selHandle(cmd.action() == LFUN_WORD_LEFT_SELECT);
 828                         needsUpdate |= cursorVisLeftOneWord(cur);
 829                         if (!needsUpdate && oldTopSlice == cur.top()
 830                                         && cur.boundary() == oldBoundary) {
 831                                 cur.undispatched();
 832                                 cmd = FuncRequest(LFUN_FINISHED_LEFT);
 833                         }
 834                 } else {
 835                         if (reverseDirectionNeeded(cur)) {
 836                                 cmd.setAction(cmd.action() == LFUN_WORD_LEFT_SELECT ?
 837                                                 LFUN_WORD_FORWARD_SELECT : LFUN_WORD_FORWARD);
 838                         } else {
 839                                 cmd.setAction(cmd.action() == LFUN_WORD_LEFT_SELECT ?
 840                                                 LFUN_WORD_BACKWARD_SELECT : LFUN_WORD_BACKWARD);
 841                         }
 842                         dispatch(cur, cmd);
 843                         return;
 844                 }
 845                 break;
 846
 847         case LFUN_WORD_BACKWARD:
 848         case LFUN_WORD_BACKWARD_SELECT:
 849                 needsUpdate |= cur.selHandle(cmd.action() == LFUN_WORD_BACKWARD_SELECT);
 850                 needsUpdate |= cursorBackwardOneWord(cur);
 851                 break;
 852
 853         case LFUN_WORD_SELECT: {
 854                 selectWord(cur, WHOLE_WORD);
 855                 finishChange(cur, true);
 856                 break;
 857         }
 858
 859         case LFUN_NEWLINE_INSERT: {
 860                 InsetNewlineParams inp;
 861                 docstring arg = cmd.argument();
 862                 // this avoids a double undo
 863                 // FIXME: should not be needed, ideally
 864                 if (!cur.selection())
 865                         cur.recordUndo();
 866                 cap::replaceSelection(cur);
 867                 if (arg == "linebreak")
 868                         inp.kind = InsetNewlineParams::LINEBREAK;
 869                 else
 870                         inp.kind = InsetNewlineParams::NEWLINE;
 871                 cur.insert(new InsetNewline(inp));
 872                 cur.posForward();
 873                 moveCursor(cur, false);
 874                 break;
 875         }
 876
 877         case LFUN_TAB_INSERT: {
 878                 bool const multi_par_selection = cur.selection() &&
 879                         cur.selBegin().pit() != cur.selEnd().pit();
 880                 if (multi_par_selection) {
 881                         // If there is a multi-paragraph selection, a tab is inserted
 882                         // at the beginning of each paragraph.
 883                         cur.recordUndoSelection();
 884                         pit_type const pit_end = cur.selEnd().pit();
 885                         for (pit_type pit = cur.selBegin().pit(); pit <= pit_end; pit++) {
 886                                 pars_[pit].insertChar(0, '\t',
 887                                                       bv->buffer().params().trackChanges);
 888                                 // Update the selection pos to make sure the selection does not
 889                                 // change as the inserted tab will increase the logical pos.
 890                                 if (cur.realAnchor().pit() == pit)
 891                                         cur.realAnchor().forwardPos();
 892                                 if (cur.pit() == pit)
 893                                         cur.forwardPos();
 894                         }
 895                         cur.finishUndo();
 896                 } else {
 897                         // Maybe we shouldn't allow tabs within a line, because they
 898                         // are not (yet) aligned as one might do expect.
 899                         FuncRequest cmd(LFUN_SELF_INSERT, from_ascii("\t"));
 900                         dispatch(cur, cmd);
 901                 }
 902                 break;
 903         }
 904
 905         case LFUN_TAB_DELETE: {
 906                 bool const tc = bv->buffer().params().trackChanges;
 907                 if (cur.selection()) {
 908                         // If there is a selection, a tab (if present) is removed from
 909                         // the beginning of each paragraph.
 910                         cur.recordUndoSelection();
 911                         pit_type const pit_end = cur.selEnd().pit();
 912                         for (pit_type pit = cur.selBegin().pit(); pit <= pit_end; pit++) {
 913                                 Paragraph & par = paragraphs()[pit];
 914                                 if (par.getChar(0) == '\t') {
 915                                         if (cur.pit() == pit)
 916                                                 cur.posBackward();
 917                                         if (cur.realAnchor().pit() == pit && cur.realAnchor().pos() > 0 )
 918                                                 cur.realAnchor().backwardPos();
 919
 920                                         par.eraseChar(0, tc);
 921                                 } else
 922                                         // If no tab was present, try to remove up to four spaces.
 923                                         for (int n_spaces = 0;
 924                                              par.getChar(0) == ' ' && n_spaces < 4; ++n_spaces) {
 925                                                 if (cur.pit() == pit)
 926                                                         cur.posBackward();
 927                                                 if (cur.realAnchor().pit() == pit && cur.realAnchor().pos() > 0 )
 928                                                         cur.realAnchor().backwardPos();
 929
 930                                                 par.eraseChar(0, tc);
 931                                         }
 932                         }
 933                         cur.finishUndo();
 934                 } else {
 935                         // If there is no selection, try to remove a tab or some spaces
 936                         // before the position of the cursor.
 937                         Paragraph & par = paragraphs()[cur.pit()];
 938                         pos_type const pos = cur.pos();
 939
 940                         if (pos == 0)
 941                                 break;
 942
 943                         char_type const c = par.getChar(pos - 1);
 944                         cur.recordUndo();
 945                         if (c == '\t') {
 946                                 cur.posBackward();
 947                                 par.eraseChar(cur.pos(), tc);
 948                         } else
 949                                 for (int n_spaces = 0;
 950                                      cur.pos() > 0
 951                                              && par.getChar(cur.pos() - 1) == ' '
 952                                              && n_spaces < 4;
 953                                      ++n_spaces) {
 954                                         cur.posBackward();
 955                                         par.eraseChar(cur.pos(), tc);
 956                                 }
 957                         cur.finishUndo();
 958                 }
 959                 break;
 960         }
 961
 962         case LFUN_CHAR_DELETE_FORWARD:
 963                 if (!cur.selection()) {
 964                         if (cur.pos() == cur.paragraph().size())
 965                                 // Par boundary, force full-screen update
 966                                 singleParUpdate = false;
 967                         needsUpdate |= erase(cur);
 968                         cur.resetAnchor();
 969                         // It is possible to make it a lot faster still
 970                         // just comment out the line below...
 971                 } else {
 972                         cutSelection(cur, true, false);
 973                         singleParUpdate = false;
 974                 }
 975                 moveCursor(cur, false);
 976                 cur.forceBufferUpdate();
 977                 break;
 978
 979         case LFUN_CHAR_DELETE_BACKWARD:
 980                 if (!cur.selection()) {
 981                         if (bv->getIntl().getTransManager().backspace()) {
 982                                 // Par boundary, full-screen update
 983                                 if (cur.pos() == 0)
 984                                         singleParUpdate = false;
 985                                 needsUpdate |= backspace(cur);
 986                                 cur.resetAnchor();
 987                                 // It is possible to make it a lot faster still
 988                                 // just comment out the line below...
 989                         }
 990                 } else {
 991                         cutSelection(cur, true, false);
 992                         singleParUpdate = false;
 993                 }
 994                 cur.forceBufferUpdate();
 995                 break;
 996
 997         case LFUN_BREAK_PARAGRAPH:
 998                 cap::replaceSelection(cur);
 999                 breakParagraph(cur, cmd.argument() == "inverse");
1000                 cur.resetAnchor();
1001                 break;
1002
1003         case LFUN_INSET_INSERT: {
1004                 cur.recordUndo();
1005
1006                 // We have to avoid triggering InstantPreview loading
1007                 // before inserting into the document. See bug #5626.
1008                 bool loaded = bv->buffer().isFullyLoaded();
1009                 bv->buffer().setFullyLoaded(false);
1010                 Inset * inset = createInset(&bv->buffer(), cmd);
1011                 bv->buffer().setFullyLoaded(loaded);
1012
1013                 if (inset) {
1014                         // FIXME (Abdel 01/02/2006):
1015                         // What follows would be a partial fix for bug 2154:
1016                         //   http://www.lyx.org/trac/ticket/2154
1017                         // This automatically put the label inset _after_ a
1018                         // numbered section. It should be possible to extend the mechanism
1019                         // to any kind of LateX environement.
1020                         // The correct way to fix that bug would be at LateX generation.
1021                         // I'll let the code here for reference as it could be used for some
1022                         // other feature like "automatic labelling".
1023                         /*
1024                         Paragraph & par = pars_[cur.pit()];
1025                         if (inset->lyxCode() == LABEL_CODE
1026                                 && par.layout().labeltype == LABEL_COUNTER) {
1027                                 // Go to the end of the paragraph
1028                                 // Warning: Because of Change-Tracking, the last
1029                                 // position is 'size()' and not 'size()-1':
1030                                 cur.pos() = par.size();
1031                                 // Insert a new paragraph
1032                                 FuncRequest fr(LFUN_BREAK_PARAGRAPH);
1033                                 dispatch(cur, fr);
1034                         }
1035                         */
1036                         if (cur.selection())
1037                                 cutSelection(cur, true, false);
1038                         cur.insert(inset);
1039                         cur.posForward();
1040
1041                         // trigger InstantPreview now
1042                         if (inset->lyxCode() == EXTERNAL_CODE) {
1043                                 InsetExternal & ins =
1044                                         static_cast<InsetExternal &>(*inset);
1045                                 ins.updatePreview();
1046                         }
1047                 }
1048
1049                 break;
1050         }
1051
1052         case LFUN_INSET_DISSOLVE: {
1053                 if (dissolveInset(cur)) {
1054                         needsUpdate = true;
1055                         cur.forceBufferUpdate();
1056                 }
1057                 break;
1058         }
1059
1060         case LFUN_SET_GRAPHICS_GROUP: {
1061                 InsetGraphics * ins = graphics::getCurrentGraphicsInset(cur);
1062                 if (!ins)
1063                         break;
1064
1065                 cur.recordUndo();
1066
1067                 string id = to_utf8(cmd.argument());
1068                 string grp = graphics::getGroupParams(bv->buffer(), id);
1069                 InsetGraphicsParams tmp, inspar = ins->getParams();
1070
1071                 if (id.empty())
1072                         inspar.groupId = to_utf8(cmd.argument());
1073                 else {
1074                         InsetGraphics::string2params(grp, bv->buffer(), tmp);
1075                         tmp.filename = inspar.filename;
1076                         inspar = tmp;
1077                 }
1078
1079                 ins->setParams(inspar);
1080         }
1081
1082         case LFUN_SPACE_INSERT:
1083                 if (cur.paragraph().layout().free_spacing)
1084                         insertChar(cur, ' ');
1085                 else {
1086                         doInsertInset(cur, this, cmd, false, false);
1087                         cur.posForward();
1088                 }
1089                 moveCursor(cur, false);
1090                 break;
1091
1092         case LFUN_SPECIALCHAR_INSERT: {
1093                 string const name = to_utf8(cmd.argument());
1094                 if (name == "hyphenation")
1095                         specialChar(cur, InsetSpecialChar::HYPHENATION);
1096                 else if (name == "ligature-break")
1097                         specialChar(cur, InsetSpecialChar::LIGATURE_BREAK);
1098                 else if (name == "slash")
1099                         specialChar(cur, InsetSpecialChar::SLASH);
1100                 else if (name == "nobreakdash")
1101                         specialChar(cur, InsetSpecialChar::NOBREAKDASH);
1102                 else if (name == "dots")
1103                         specialChar(cur, InsetSpecialChar::LDOTS);
1104                 else if (name == "end-of-sentence")
1105                         specialChar(cur, InsetSpecialChar::END_OF_SENTENCE);
1106                 else if (name == "menu-separator")
1107                         specialChar(cur, InsetSpecialChar::MENU_SEPARATOR);
1108                 else if (name.empty())
1109                         lyxerr << "LyX function 'specialchar-insert' needs an argument." << endl;
1110                 else
1111                         lyxerr << "Wrong argument for LyX function 'specialchar-insert'." << endl;
1112                 break;
1113         }
1114
1115         case LFUN_WORD_UPCASE:
1116                 changeCase(cur, text_uppercase);
1117                 break;
1118
1119         case LFUN_WORD_LOWCASE:
1120                 changeCase(cur, text_lowercase);
1121                 break;
1122
1123         case LFUN_WORD_CAPITALIZE:
1124                 changeCase(cur, text_capitalization);
1125                 break;
1126
1127         case LFUN_CHARS_TRANSPOSE:
1128                 charsTranspose(cur);
1129                 break;
1130
1131         case LFUN_PASTE: {
1132                 cur.message(_("Paste"));
1133                 LASSERT(cur.selBegin().idx() == cur.selEnd().idx(), /**/);
1134                 cap::replaceSelection(cur);
1135
1136                 // without argument?
1137                 string const arg = to_utf8(cmd.argument());
1138                 if (arg.empty()) {
1139                         if (theClipboard().isInternal())
1140                                 pasteFromStack(cur, bv->buffer().errorList("Paste"), 0);
1141                         else if (theClipboard().hasGraphicsContents()
1142                                      && !theClipboard().hasTextContents())
1143                                 pasteClipboardGraphics(cur, bv->buffer().errorList("Paste"));
1144                         else
1145                                 pasteClipboardText(cur, bv->buffer().errorList("Paste"));
1146                 } else if (isStrUnsignedInt(arg)) {
1147                         // we have a numerical argument
1148                         pasteFromStack(cur, bv->buffer().errorList("Paste"),
1149                                        convert<unsigned int>(arg));
1150                 } else {
1151                         Clipboard::GraphicsType type = Clipboard::AnyGraphicsType;
1152                         if (arg == "pdf")
1153                                 type = Clipboard::PdfGraphicsType;
1154                         else if (arg == "png")
1155                                 type = Clipboard::PngGraphicsType;
1156                         else if (arg == "jpeg")
1157                                 type = Clipboard::JpegGraphicsType;
1158                         else if (arg == "linkback")
1159                                 type = Clipboard::LinkBackGraphicsType;
1160                         else if (arg == "emf")
1161                                 type = Clipboard::EmfGraphicsType;
1162                         else if (arg == "wmf")
1163                                 type = Clipboard::WmfGraphicsType;
1164
1165                         else
1166                                 LASSERT(false, /**/);
1167
1168                         pasteClipboardGraphics(cur, bv->buffer().errorList("Paste"), type);
1169                 }
1170
1171                 bv->buffer().errors("Paste");
1172                 cur.clearSelection(); // bug 393
1173                 cur.finishUndo();
1174                 break;
1175         }
1176
1177         case LFUN_CUT:
1178                 cutSelection(cur, true, true);
1179                 cur.message(_("Cut"));
1180                 break;
1181
1182         case LFUN_COPY:
1183                 copySelection(cur);
1184                 cur.message(_("Copy"));
1185                 break;
1186
1187         case LFUN_SERVER_GET_XY:
1188                 cur.message(from_utf8(
1189                         convert<string>(tm->cursorX(cur.top(), cur.boundary()))
1190                         + ' ' + convert<string>(tm->cursorY(cur.top(), cur.boundary()))));
1191                 break;
1192
1193         case LFUN_SERVER_SET_XY: {
1194                 int x = 0;
1195                 int y = 0;
1196                 istringstream is(to_utf8(cmd.argument()));
1197                 is >> x >> y;
1198                 if (!is)
1199                         lyxerr << "SETXY: Could not parse coordinates in '"
1200                                << to_utf8(cmd.argument()) << endl;
1201                 else
1202                         tm->setCursorFromCoordinates(cur, x, y);
1203                 break;
1204         }
1205
1206         case LFUN_SERVER_GET_LAYOUT:
1207                 cur.message(cur.paragraph().layout().name());
1208                 break;
1209
1210         case LFUN_LAYOUT: {
1211                 docstring layout = cmd.argument();
1212                 LYXERR(Debug::INFO, "LFUN_LAYOUT: (arg) " << to_utf8(layout));
1213
1214                 Paragraph const & para = cur.paragraph();
1215                 docstring const old_layout = para.layout().name();
1216                 DocumentClass const & tclass = bv->buffer().params().documentClass();
1217
1218                 if (layout.empty())
1219                         layout = tclass.defaultLayoutName();
1220
1221                 if (owner_->forcePlainLayout())
1222                         // in this case only the empty layout is allowed
1223                         layout = tclass.plainLayoutName();
1224                 else if (para.usePlainLayout()) {
1225                         // in this case, default layout maps to empty layout
1226                         if (layout == tclass.defaultLayoutName())
1227                                 layout = tclass.plainLayoutName();
1228                 } else {
1229                         // otherwise, the empty layout maps to the default
1230                         if (layout == tclass.plainLayoutName())
1231                                 layout = tclass.defaultLayoutName();
1232                 }
1233
1234                 bool hasLayout = tclass.hasLayout(layout);
1235
1236                 // If the entry is obsolete, use the new one instead.
1237                 if (hasLayout) {
1238                         docstring const & obs = tclass[layout].obsoleted_by();
1239                         if (!obs.empty())
1240                                 layout = obs;
1241                 }
1242
1243                 if (!hasLayout) {
1244                         cur.errorMessage(from_utf8(N_("Layout ")) + cmd.argument() +
1245                                 from_utf8(N_(" not known")));
1246                         break;
1247                 }
1248
1249                 bool change_layout = (old_layout != layout);
1250
1251                 if (!change_layout && cur.selection() &&
1252                         cur.selBegin().pit() != cur.selEnd().pit())
1253                 {
1254                         pit_type spit = cur.selBegin().pit();
1255                         pit_type epit = cur.selEnd().pit() + 1;
1256                         while (spit != epit) {
1257                                 if (pars_[spit].layout().name() != old_layout) {
1258                                         change_layout = true;
1259                                         break;
1260                                 }
1261                                 ++spit;
1262                         }
1263                 }
1264
1265                 if (change_layout)
1266                         setLayout(cur, layout);
1267
1268                 break;
1269         }
1270
1271         case LFUN_CLIPBOARD_PASTE:
1272                 cur.clearSelection();
1273                 pasteClipboardText(cur, bv->buffer().errorList("Paste"),
1274                                cmd.argument() == "paragraph");
1275                 bv->buffer().errors("Paste");
1276                 break;
1277
1278         case LFUN_PRIMARY_SELECTION_PASTE:
1279                 pasteString(cur, theSelection().get(),
1280                             cmd.argument() == "paragraph");
1281                 break;
1282
1283         case LFUN_SELECTION_PASTE:
1284                 // Copy the selection buffer to the clipboard stack,
1285                 // because we want it to appear in the "Edit->Paste
1286                 // recent" menu.
1287                 cap::copySelectionToStack();
1288                 cap::pasteSelection(bv->cursor(), bv->buffer().errorList("Paste"));
1289                 bv->buffer().errors("Paste");
1290                 break;
1291
1292         case LFUN_UNICODE_INSERT: {
1293                 if (cmd.argument().empty())
1294                         break;
1295                 docstring hexstring = cmd.argument();
1296                 if (isHex(hexstring)) {
1297                         char_type c = hexToInt(hexstring);
1298                         if (c >= 32 && c < 0x10ffff) {
1299                                 lyxerr << "Inserting c: " << c << endl;
1300                                 docstring s = docstring(1, c);
1301                                 lyx::dispatch(FuncRequest(LFUN_SELF_INSERT, s));
1302                         }
1303                 }
1304                 break;
1305         }
1306
1307         case LFUN_QUOTE_INSERT: {
1308                 Paragraph & par = cur.paragraph();
1309                 pos_type pos = cur.pos();
1310                 BufferParams const & bufparams = bv->buffer().params();
1311                 Layout const & style = par.layout();
1312                 InsetLayout const & ilayout = cur.inset().getLayout();
1313                 if (!style.pass_thru && !ilayout.isPassThru()
1314                     && par.getFontSettings(bufparams, pos).language()->lang() != "hebrew") {
1315                         // this avoids a double undo
1316                         // FIXME: should not be needed, ideally
1317                         if (!cur.selection())
1318                                 cur.recordUndo();
1319                         cap::replaceSelection(cur);
1320                         pos = cur.pos();
1321                         char_type c;
1322                         if (pos == 0)
1323                                 c = ' ';
1324                         else if (cur.prevInset() && cur.prevInset()->isSpace())
1325                                 c = ' ';
1326                         else
1327                                 c = par.getChar(pos - 1);
1328                         string arg = to_utf8(cmd.argument());
1329                         cur.insert(new InsetQuotes(cur.buffer(), c, (arg == "single")
1330                                 ? InsetQuotes::SingleQuotes : InsetQuotes::DoubleQuotes));
1331                         cur.posForward();
1332                 }
1333                 else
1334                         lyx::dispatch(FuncRequest(LFUN_SELF_INSERT, "\""));
1335                 break;
1336         }
1337
1338         case LFUN_DATE_INSERT: {
1339                 string const format = cmd.argument().empty()
1340                         ? lyxrc.date_insert_format : to_utf8(cmd.argument());
1341                 string const time = formatted_time(current_time(), format);
1342                 lyx::dispatch(FuncRequest(LFUN_SELF_INSERT, time));
1343                 break;
1344         }
1345
1346         case LFUN_MOUSE_TRIPLE:
1347                 if (cmd.button() == mouse_button::button1) {
1348                         tm->cursorHome(cur);
1349                         cur.resetAnchor();
1350                         tm->cursorEnd(cur);
1351                         cur.setSelection();
1352                         bv->cursor() = cur;
1353                 }
1354                 break;
1355
1356         case LFUN_MOUSE_DOUBLE:
1357                 if (cmd.button() == mouse_button::button1) {
1358                         selectWord(cur, WHOLE_WORD_STRICT);
1359                         bv->cursor() = cur;
1360                 }
1361                 break;
1362
1363         // Single-click on work area
1364         case LFUN_MOUSE_PRESS: {
1365                 // We are not marking a selection with the keyboard in any case.
1366                 Cursor & bvcur = cur.bv().cursor();
1367                 bvcur.setMark(false);
1368                 switch (cmd.button()) {
1369                 case mouse_button::button1:
1370                         // Set the cursor
1371                         if (!bv->mouseSetCursor(cur, cmd.argument() == "region-select"))
1372                                 cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1373                         if (bvcur.wordSelection())
1374                                 selectWord(bvcur, WHOLE_WORD);
1375                         break;
1376
1377                 case mouse_button::button2:
1378                         // Middle mouse pasting.
1379                         bv->mouseSetCursor(cur);
1380                         lyx::dispatch(
1381                                 FuncRequest(LFUN_COMMAND_ALTERNATIVES,
1382                                             "selection-paste ; primary-selection-paste paragraph"));
1383                         cur.noScreenUpdate();
1384                         break;
1385
1386                 case mouse_button::button3: {
1387                         // Don't do anything if we right-click a
1388                         // selection, a context menu will popup.
1389                         if (bvcur.selection() && cur >= bvcur.selectionBegin()
1390                             && cur < bvcur.selectionEnd()) {
1391                                 cur.noScreenUpdate();
1392                                 return;
1393                         }
1394                         if (!bv->mouseSetCursor(cur, false))
1395                                 cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1396                         break;
1397                 }
1398
1399                 default:
1400                         break;
1401                 } // switch (cmd.button())
1402                 break;
1403         }
1404         case LFUN_MOUSE_MOTION: {
1405                 // Mouse motion with right or middle mouse do nothing for now.
1406                 if (cmd.button() != mouse_button::button1) {
1407                         cur.noScreenUpdate();
1408                         return;
1409                 }
1410                 // ignore motions deeper nested than the real anchor
1411                 Cursor & bvcur = cur.bv().cursor();
1412                 if (!bvcur.realAnchor().hasPart(cur)) {
1413                         cur.undispatched();
1414                         break;
1415                 }
1416                 CursorSlice old = bvcur.top();
1417
1418                 int const wh = bv->workHeight();
1419                 int const y = max(0, min(wh - 1, cmd.y()));
1420
1421                 tm->setCursorFromCoordinates(cur, cmd.x(), y);
1422                 cur.setTargetX(cmd.x());
1423                 if (cmd.y() >= wh)
1424                         lyx::dispatch(FuncRequest(LFUN_DOWN_SELECT));
1425                 else if (cmd.y() < 0)
1426                         lyx::dispatch(FuncRequest(LFUN_UP_SELECT));
1427                 // This is to allow jumping over large insets
1428                 if (cur.top() == old) {
1429                         if (cmd.y() >= wh)
1430                                 lyx::dispatch(FuncRequest(LFUN_DOWN_SELECT));
1431                         else if (cmd.y() < 0)
1432                                 lyx::dispatch(FuncRequest(LFUN_UP_SELECT));
1433                 }
1434                 // We continue with our existing selection or start a new one, so don't
1435                 // reset the anchor.
1436                 bvcur.setCursor(cur);
1437                 bvcur.setSelection(true);
1438                 if (cur.top() == old) {
1439                         // We didn't move one iota, so no need to update the screen.
1440                         cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1441                         //cur.noScreenUpdate();
1442                         return;
1443                 }
1444                 break;
1445         }
1446
1447         case LFUN_MOUSE_RELEASE:
1448                 switch (cmd.button()) {
1449                 case mouse_button::button1:
1450                         // Cursor was set at LFUN_MOUSE_PRESS or LFUN_MOUSE_MOTION time.
1451                         // If there is a new selection, update persistent selection;
1452                         // otherwise, single click does not clear persistent selection
1453                         // buffer.
1454                         if (cur.selection()) {
1455                                 // Finish selection. If double click,
1456                                 // cur is moved to the end of word by
1457                                 // selectWord but bvcur is current
1458                                 // mouse position.
1459                                 cur.bv().cursor().setSelection();
1460                                 // We might have removed an empty but drawn selection
1461                                 // (probably a margin)
1462                                 cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1463                         } else
1464                                 cur.noScreenUpdate();
1465                         // FIXME: We could try to handle drag and drop of selection here.
1466                         return;
1467
1468                 case mouse_button::button2:
1469                         // Middle mouse pasting is handled at mouse press time,
1470                         // see LFUN_MOUSE_PRESS.
1471                         cur.noScreenUpdate();
1472                         return;
1473
1474                 case mouse_button::button3:
1475                         // Cursor was set at LFUN_MOUSE_PRESS time.
1476                         // FIXME: If there is a selection we could try to handle a special
1477                         // drag & drop context menu.
1478                         cur.noScreenUpdate();
1479                         return;
1480
1481                 case mouse_button::none:
1482                 case mouse_button::button4:
1483                 case mouse_button::button5:
1484                         break;
1485                 } // switch (cmd.button())
1486
1487                 break;
1488
1489         case LFUN_SELF_INSERT: {
1490                 if (cmd.argument().empty())
1491                         break;
1492
1493                 // Automatically delete the currently selected
1494                 // text and replace it with what is being
1495                 // typed in now. Depends on lyxrc settings
1496                 // "auto_region_delete", which defaults to
1497                 // true (on).
1498
1499                 if (lyxrc.auto_region_delete && cur.selection())
1500                         cutSelection(cur, false, false);
1501
1502                 cur.clearSelection();
1503
1504                 docstring::const_iterator cit = cmd.argument().begin();
1505                 docstring::const_iterator const end = cmd.argument().end();
1506                 for (; cit != end; ++cit)
1507                         bv->translateAndInsert(*cit, this, cur);
1508
1509                 cur.resetAnchor();
1510                 moveCursor(cur, false);
1511                 bv->bookmarkEditPosition();
1512                 break;
1513         }
1514
1515         case LFUN_HYPERLINK_INSERT: {
1516                 InsetCommandParams p(HYPERLINK_CODE);
1517                 docstring content;
1518                 if (cur.selection()) {
1519                         content = cur.selectionAsString(false);
1520                         cutSelection(cur, true, false);
1521                 }
1522                 p["target"] = (cmd.argument().empty()) ?
1523                         content : cmd.argument();
1524                 string const data = InsetCommand::params2string("href", p);
1525                 if (p["target"].empty()) {
1526                         bv->showDialog("href", data);
1527                 } else {
1528                         FuncRequest fr(LFUN_INSET_INSERT, data);
1529                         dispatch(cur, fr);
1530                 }
1531                 break;
1532         }
1533
1534         case LFUN_LABEL_INSERT: {
1535                 InsetCommandParams p(LABEL_CODE);
1536                 // Try to generate a valid label
1537                 p["name"] = (cmd.argument().empty()) ?
1538                         cur.getPossibleLabel() :
1539                         cmd.argument();
1540                 string const data = InsetCommand::params2string("label", p);
1541
1542                 if (cmd.argument().empty()) {
1543                         bv->showDialog("label", data);
1544                 } else {
1545                         FuncRequest fr(LFUN_INSET_INSERT, data);
1546                         dispatch(cur, fr);
1547                 }
1548                 break;
1549         }
1550
1551         case LFUN_INFO_INSERT: {
1552                 Inset * inset;
1553                 if (cmd.argument().empty() && cur.selection()) {
1554                         // if command argument is empty use current selection as parameter.
1555                         docstring ds = cur.selectionAsString(false);
1556                         cutSelection(cur, true, false);
1557                         FuncRequest cmd0(cmd, ds);
1558                         inset = createInset(cur.buffer(), cmd0);
1559                 } else {
1560                         inset = createInset(cur.buffer(), cmd);
1561                 }
1562                 if (!inset)
1563                         break;
1564                 cur.recordUndo();
1565                 insertInset(cur, inset);
1566                 cur.posForward();
1567                 break;
1568         }
1569         case LFUN_CAPTION_INSERT:
1570         case LFUN_FOOTNOTE_INSERT:
1571         case LFUN_NOTE_INSERT:
1572         case LFUN_FLEX_INSERT:
1573         case LFUN_BOX_INSERT:
1574         case LFUN_BRANCH_INSERT:
1575         case LFUN_PHANTOM_INSERT:
1576         case LFUN_ERT_INSERT:
1577         case LFUN_LISTING_INSERT:
1578         case LFUN_MARGINALNOTE_INSERT:
1579         case LFUN_ARGUMENT_INSERT:
1580         case LFUN_INDEX_INSERT:
1581         case LFUN_PREVIEW_INSERT:
1582                 // Open the inset, and move the current selection
1583                 // inside it.
1584                 doInsertInset(cur, this, cmd, true, true);
1585                 cur.posForward();
1586                 // Some insets are numbered, others are shown in the outline pane so
1587                 // let's update the labels and the toc backend.
1588                 cur.forceBufferUpdate();
1589                 break;
1590
1591         case LFUN_TABULAR_INSERT:
1592                 // if there were no arguments, just open the dialog
1593                 if (doInsertInset(cur, this, cmd, false, true))
1594                         cur.posForward();
1595                 else
1596                         bv->showDialog("tabularcreate");
1597
1598                 break;
1599
1600         case LFUN_FLOAT_INSERT:
1601         case LFUN_FLOAT_WIDE_INSERT:
1602         case LFUN_WRAP_INSERT: {
1603                 // will some text be moved into the inset?
1604                 bool content = cur.selection();
1605
1606                 doInsertInset(cur, this, cmd, true, true);
1607                 cur.posForward();
1608
1609                 // If some text is moved into the inset, doInsertInset
1610                 // puts the cursor outside the inset. To insert the
1611                 // caption we put it back into the inset.
1612                 if (content)
1613                         cur.backwardPos();
1614
1615                 ParagraphList & pars = cur.text()->paragraphs();
1616
1617                 DocumentClass const & tclass = bv->buffer().params().documentClass();
1618
1619                 // add a separate paragraph for the caption inset
1620                 pars.push_back(Paragraph());
1621                 pars.back().setInsetOwner(&cur.text()->inset());
1622                 pars.back().setPlainOrDefaultLayout(tclass);
1623                 int cap_pit = pars.size() - 1;
1624
1625                 // if an empty inset was created, we create an additional empty
1626                 // paragraph at the bottom so that the user can choose where to put
1627                 // the graphics (or table).
1628                 if (!content) {
1629                         pars.push_back(Paragraph());
1630                         pars.back().setInsetOwner(&cur.text()->inset());
1631                         pars.back().setPlainOrDefaultLayout(tclass);
1632                 }
1633
1634                 // reposition the cursor to the caption
1635                 cur.pit() = cap_pit;
1636                 cur.pos() = 0;
1637                 // FIXME: This Text/Cursor dispatch handling is a mess!
1638                 // We cannot use Cursor::dispatch here it needs access to up to
1639                 // date metrics.
1640                 FuncRequest cmd_caption(LFUN_CAPTION_INSERT);
1641                 doInsertInset(cur, cur.text(), cmd_caption, true, false);
1642                 cur.forceBufferUpdate();
1643                 cur.screenUpdateFlags(Update::Force);
1644                 // FIXME: When leaving the Float (or Wrap) inset we should
1645                 // delete any empty paragraph left above or below the
1646                 // caption.
1647                 break;
1648         }
1649
1650         case LFUN_NOMENCL_INSERT: {
1651                 InsetCommandParams p(NOMENCL_CODE);
1652                 if (cmd.argument().empty())
1653                         p["symbol"] = bv->cursor().innerText()->getStringToIndex(bv->cursor());
1654                 else
1655                         p["symbol"] = cmd.argument();
1656                 string const data = InsetCommand::params2string("nomenclature", p);
1657                 bv->showDialog("nomenclature", data);
1658                 break;
1659         }
1660
1661         case LFUN_INDEX_PRINT: {
1662                 InsetCommandParams p(INDEX_PRINT_CODE);
1663                 if (cmd.argument().empty())
1664                         p["type"] = from_ascii("idx");
1665                 else
1666                         p["type"] = cmd.argument();
1667                 string const data = InsetCommand::params2string("index_print", p);
1668                 FuncRequest fr(LFUN_INSET_INSERT, data);
1669                 dispatch(cur, fr);
1670                 break;
1671         }
1672
1673         case LFUN_NOMENCL_PRINT:
1674         case LFUN_TOC_INSERT:
1675         case LFUN_LINE_INSERT:
1676         case LFUN_NEWPAGE_INSERT:
1677                 // do nothing fancy
1678                 doInsertInset(cur, this, cmd, false, false);
1679                 cur.posForward();
1680                 break;
1681
1682         case LFUN_DEPTH_DECREMENT:
1683                 changeDepth(cur, DEC_DEPTH);
1684                 break;
1685
1686         case LFUN_DEPTH_INCREMENT:
1687                 changeDepth(cur, INC_DEPTH);
1688                 break;
1689
1690         case LFUN_MATH_DISPLAY:
1691                 mathDispatch(cur, cmd, true);
1692                 break;
1693
1694         case LFUN_REGEXP_MODE:
1695                 regexpDispatch(cur, cmd);
1696                 break;
1697
1698         case LFUN_MATH_MODE:
1699                 if (cmd.argument() == "on")
1700                         // don't pass "on" as argument
1701                         mathDispatch(cur, FuncRequest(LFUN_MATH_MODE), false);
1702                 else
1703                         mathDispatch(cur, cmd, false);
1704                 break;
1705
1706         case LFUN_MATH_MACRO:
1707                 if (cmd.argument().empty())
1708                         cur.errorMessage(from_utf8(N_("Missing argument")));
1709                 else {
1710                         string s = to_utf8(cmd.argument());
1711                         string const s1 = token(s, ' ', 1);
1712                         int const nargs = s1.empty() ? 0 : convert<int>(s1);
1713                         string const s2 = token(s, ' ', 2);
1714                         MacroType type = MacroTypeNewcommand;
1715                         if (s2 == "def")
1716                                 type = MacroTypeDef;
1717                         MathMacroTemplate * inset = new MathMacroTemplate(cur.buffer(),
1718                                 from_utf8(token(s, ' ', 0)), nargs, false, type);
1719                         inset->setBuffer(bv->buffer());
1720                         insertInset(cur, inset);
1721
1722                         // enter macro inset and select the name
1723                         cur.push(*inset);
1724                         cur.top().pos() = cur.top().lastpos();
1725                         cur.resetAnchor();
1726                         cur.setSelection(true);
1727                         cur.top().pos() = 0;
1728                 }
1729                 break;
1730
1731         // passthrough hat and underscore outside mathed:
1732         case LFUN_MATH_SUBSCRIPT:
1733                 mathDispatch(cur, FuncRequest(LFUN_SELF_INSERT, "_"), false);
1734                 break;
1735         case LFUN_MATH_SUPERSCRIPT:
1736                 mathDispatch(cur, FuncRequest(LFUN_SELF_INSERT, "^"), false);
1737                 break;
1738
1739         case LFUN_MATH_INSERT:
1740         case LFUN_MATH_AMS_MATRIX:
1741         case LFUN_MATH_MATRIX:
1742         case LFUN_MATH_DELIM:
1743         case LFUN_MATH_BIGDELIM: {
1744                 cur.recordUndo();
1745                 cap::replaceSelection(cur);
1746                 cur.insert(new InsetMathHull(cur.buffer(), hullSimple));
1747                 checkAndActivateInset(cur, true);
1748                 LASSERT(cur.inMathed(), /**/);
1749                 cur.dispatch(cmd);
1750                 break;
1751         }
1752
1753         case LFUN_FONT_EMPH: {
1754                 Font font(ignore_font, ignore_language);
1755                 font.fontInfo().setEmph(FONT_TOGGLE);
1756                 toggleAndShow(cur, this, font);
1757                 break;
1758         }
1759
1760         case LFUN_FONT_ITAL: {
1761                 Font font(ignore_font, ignore_language);
1762                 font.fontInfo().setShape(ITALIC_SHAPE);
1763                 toggleAndShow(cur, this, font);
1764                 break;
1765         }
1766
1767         case LFUN_FONT_BOLD:
1768         case LFUN_FONT_BOLDSYMBOL: {
1769                 Font font(ignore_font, ignore_language);
1770                 font.fontInfo().setSeries(BOLD_SERIES);
1771                 toggleAndShow(cur, this, font);
1772                 break;
1773         }
1774
1775         case LFUN_FONT_NOUN: {
1776                 Font font(ignore_font, ignore_language);
1777                 font.fontInfo().setNoun(FONT_TOGGLE);
1778                 toggleAndShow(cur, this, font);
1779                 break;
1780         }
1781
1782         case LFUN_FONT_TYPEWRITER: {
1783                 Font font(ignore_font, ignore_language);
1784                 font.fontInfo().setFamily(TYPEWRITER_FAMILY); // no good
1785                 toggleAndShow(cur, this, font);
1786                 break;
1787         }
1788
1789         case LFUN_FONT_SANS: {
1790                 Font font(ignore_font, ignore_language);
1791                 font.fontInfo().setFamily(SANS_FAMILY);
1792                 toggleAndShow(cur, this, font);
1793                 break;
1794         }
1795
1796         case LFUN_FONT_ROMAN: {
1797                 Font font(ignore_font, ignore_language);
1798                 font.fontInfo().setFamily(ROMAN_FAMILY);
1799                 toggleAndShow(cur, this, font);
1800                 break;
1801         }
1802
1803         case LFUN_FONT_DEFAULT: {
1804                 Font font(inherit_font, ignore_language);
1805                 toggleAndShow(cur, this, font);
1806                 break;
1807         }
1808
1809         case LFUN_FONT_STRIKEOUT: {
1810                 Font font(ignore_font, ignore_language);
1811                 font.fontInfo().setStrikeout(FONT_TOGGLE);
1812                 toggleAndShow(cur, this, font);
1813                 break;
1814         }
1815
1816         case LFUN_FONT_UULINE: {
1817                 Font font(ignore_font, ignore_language);
1818                 font.fontInfo().setUuline(FONT_TOGGLE);
1819                 toggleAndShow(cur, this, font);
1820                 break;
1821         }
1822
1823         case LFUN_FONT_UWAVE: {
1824                 Font font(ignore_font, ignore_language);
1825                 font.fontInfo().setUwave(FONT_TOGGLE);
1826                 toggleAndShow(cur, this, font);
1827                 break;
1828         }
1829
1830         case LFUN_FONT_UNDERLINE: {
1831                 Font font(ignore_font, ignore_language);
1832                 font.fontInfo().setUnderbar(FONT_TOGGLE);
1833                 toggleAndShow(cur, this, font);
1834                 break;
1835         }
1836
1837         case LFUN_FONT_SIZE: {
1838                 Font font(ignore_font, ignore_language);
1839                 setLyXSize(to_utf8(cmd.argument()), font.fontInfo());
1840                 toggleAndShow(cur, this, font);
1841                 break;
1842         }
1843
1844         case LFUN_LANGUAGE: {
1845                 Language const * lang = languages.getLanguage(to_utf8(cmd.argument()));
1846                 if (!lang)
1847                         break;
1848                 Font font(ignore_font, lang);
1849                 toggleAndShow(cur, this, font);
1850                 break;
1851         }
1852
1853         case LFUN_TEXTSTYLE_APPLY:
1854                 toggleAndShow(cur, this, freefont, toggleall);
1855                 cur.message(_("Character set"));
1856                 break;
1857
1858         // Set the freefont using the contents of \param data dispatched from
1859         // the frontends and apply it at the current cursor location.
1860         case LFUN_TEXTSTYLE_UPDATE: {
1861                 Font font;
1862                 bool toggle;
1863                 if (font.fromString(to_utf8(cmd.argument()), toggle)) {
1864                         freefont = font;
1865                         toggleall = toggle;
1866                         toggleAndShow(cur, this, freefont, toggleall);
1867                         cur.message(_("Character set"));
1868                 } else {
1869                         lyxerr << "Argument not ok";
1870                 }
1871                 break;
1872         }
1873
1874         case LFUN_FINISHED_LEFT:
1875                 LYXERR(Debug::DEBUG, "handle LFUN_FINISHED_LEFT:\n" << cur);
1876                 // We're leaving an inset, going left. If the inset is LTR, we're
1877                 // leaving from the front, so we should not move (remain at --- but
1878                 // not in --- the inset). If the inset is RTL, move left, without
1879                 // entering the inset itself; i.e., move to after the inset.
1880                 if (cur.paragraph().getFontSettings(
1881                                 cur.bv().buffer().params(), cur.pos()).isRightToLeft())
1882                         cursorVisLeft(cur, true);
1883                 break;
1884
1885         case LFUN_FINISHED_RIGHT:
1886                 LYXERR(Debug::DEBUG, "handle LFUN_FINISHED_RIGHT:\n" << cur);
1887                 // We're leaving an inset, going right. If the inset is RTL, we're
1888                 // leaving from the front, so we should not move (remain at --- but
1889                 // not in --- the inset). If the inset is LTR, move right, without
1890                 // entering the inset itself; i.e., move to after the inset.
1891                 if (!cur.paragraph().getFontSettings(
1892                                 cur.bv().buffer().params(), cur.pos()).isRightToLeft())
1893                         cursorVisRight(cur, true);
1894                 break;
1895
1896         case LFUN_FINISHED_BACKWARD:
1897                 LYXERR(Debug::DEBUG, "handle LFUN_FINISHED_BACKWARD:\n" << cur);
1898                 break;
1899
1900         case LFUN_FINISHED_FORWARD:
1901                 LYXERR(Debug::DEBUG, "handle LFUN_FINISHED_FORWARD:\n" << cur);
1902                 ++cur.pos();
1903                 cur.setCurrentFont();
1904                 break;
1905
1906         case LFUN_LAYOUT_PARAGRAPH: {
1907                 string data;
1908                 params2string(cur.paragraph(), data);
1909                 data = "show\n" + data;
1910                 bv->showDialog("paragraph", data);
1911                 break;
1912         }
1913
1914         case LFUN_PARAGRAPH_UPDATE: {
1915                 string data;
1916                 params2string(cur.paragraph(), data);
1917
1918                 // Will the paragraph accept changes from the dialog?
1919                 bool const accept =
1920                         cur.inset().allowParagraphCustomization(cur.idx());
1921
1922                 data = "update " + convert<string>(accept) + '\n' + data;
1923                 bv->updateDialog("paragraph", data);
1924                 break;
1925         }
1926
1927         case LFUN_ACCENT_UMLAUT:
1928         case LFUN_ACCENT_CIRCUMFLEX:
1929         case LFUN_ACCENT_GRAVE:
1930         case LFUN_ACCENT_ACUTE:
1931         case LFUN_ACCENT_TILDE:
1932         case LFUN_ACCENT_CEDILLA:
1933         case LFUN_ACCENT_MACRON:
1934         case LFUN_ACCENT_DOT:
1935         case LFUN_ACCENT_UNDERDOT:
1936         case LFUN_ACCENT_UNDERBAR:
1937         case LFUN_ACCENT_CARON:
1938         case LFUN_ACCENT_BREVE:
1939         case LFUN_ACCENT_TIE:
1940         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
1941         case LFUN_ACCENT_CIRCLE:
1942         case LFUN_ACCENT_OGONEK:
1943                 theApp()->handleKeyFunc(cmd.action());
1944                 if (!cmd.argument().empty())
1945                         // FIXME: Are all these characters encoded in one byte in utf8?
1946                         bv->translateAndInsert(cmd.argument()[0], this, cur);
1947                 break;
1948
1949         case LFUN_FLOAT_LIST_INSERT: {
1950                 DocumentClass const & tclass = bv->buffer().params().documentClass();
1951                 if (tclass.floats().typeExist(to_utf8(cmd.argument()))) {
1952                         cur.recordUndo();
1953                         if (cur.selection())
1954                                 cutSelection(cur, true, false);
1955                         breakParagraph(cur);
1956
1957                         if (cur.lastpos() != 0) {
1958                                 cursorBackward(cur);
1959                                 breakParagraph(cur);
1960                         }
1961
1962                         docstring const laystr = cur.inset().usePlainLayout() ?
1963                                 tclass.plainLayoutName() :
1964                                 tclass.defaultLayoutName();
1965                         setLayout(cur, laystr);
1966                         ParagraphParameters p;
1967                         // FIXME If this call were replaced with one to clearParagraphParams(),
1968                         // then we could get rid of this method altogether.
1969                         setParagraphs(cur, p);
1970                         // FIXME This should be simplified when InsetFloatList takes a
1971                         // Buffer in its constructor.
1972                         InsetFloatList * ifl = new InsetFloatList(cur.buffer(), to_utf8(cmd.argument()));
1973                         ifl->setBuffer(bv->buffer());
1974                         insertInset(cur, ifl);
1975                         cur.posForward();
1976                 } else {
1977                         lyxerr << "Non-existent float type: "
1978                                << to_utf8(cmd.argument()) << endl;
1979                 }
1980                 break;
1981         }
1982
1983         case LFUN_CHANGE_ACCEPT: {
1984                 acceptOrRejectChanges(cur, ACCEPT);
1985                 break;
1986         }
1987
1988         case LFUN_CHANGE_REJECT: {
1989                 acceptOrRejectChanges(cur, REJECT);
1990                 break;
1991         }
1992
1993         case LFUN_THESAURUS_ENTRY: {
1994                 docstring arg = cmd.argument();
1995                 if (arg.empty()) {
1996                         arg = cur.selectionAsString(false);
1997                         // FIXME
1998                         if (arg.size() > 100 || arg.empty()) {
1999                                 // Get word or selection
2000                                 selectWordWhenUnderCursor(cur, WHOLE_WORD);
2001                                 arg = cur.selectionAsString(false);
2002                                 arg += " lang=" + from_ascii(cur.getFont().language()->lang());
2003                         }
2004                 }
2005                 bv->showDialog("thesaurus", to_utf8(arg));
2006                 break;
2007         }
2008
2009         case LFUN_SPELLING_ADD: {
2010                 docstring word = from_utf8(cmd.getArg(0));
2011                 Language * lang;
2012                 if (word.empty()) {
2013                         word = cur.selectionAsString(false);
2014                         // FIXME
2015                         if (word.size() > 100 || word.empty()) {
2016                                 // Get word or selection
2017                                 selectWordWhenUnderCursor(cur, WHOLE_WORD);
2018                                 word = cur.selectionAsString(false);
2019                         }
2020                         lang = const_cast<Language *>(cur.getFont().language());
2021                 } else
2022                         lang = const_cast<Language *>(languages.getLanguage(cmd.getArg(1)));
2023                 WordLangTuple wl(word, lang);
2024                 theSpellChecker()->insert(wl);
2025                 break;
2026         }
2027
2028         case LFUN_SPELLING_IGNORE: {
2029                 docstring word = from_utf8(cmd.getArg(0));
2030                 Language * lang;
2031                 if (word.empty()) {
2032                         word = cur.selectionAsString(false);
2033                         // FIXME
2034                         if (word.size() > 100 || word.empty()) {
2035                                 // Get word or selection
2036                                 selectWordWhenUnderCursor(cur, WHOLE_WORD);
2037                                 word = cur.selectionAsString(false);
2038                         }
2039                         lang = const_cast<Language *>(cur.getFont().language());
2040                 } else
2041                         lang = const_cast<Language *>(languages.getLanguage(cmd.getArg(1)));
2042                 WordLangTuple wl(word, lang);
2043                 theSpellChecker()->accept(wl);
2044                 break;
2045         }
2046
2047         case LFUN_SPELLING_REMOVE: {
2048                 docstring word = from_utf8(cmd.getArg(0));
2049                 Language * lang;
2050                 if (word.empty()) {
2051                         word = cur.selectionAsString(false);
2052                         // FIXME
2053                         if (word.size() > 100 || word.empty()) {
2054                                 // Get word or selection
2055                                 selectWordWhenUnderCursor(cur, WHOLE_WORD);
2056                                 word = cur.selectionAsString(false);
2057                         }
2058                         lang = const_cast<Language *>(cur.getFont().language());
2059                 } else
2060                         lang = const_cast<Language *>(languages.getLanguage(cmd.getArg(1)));
2061                 WordLangTuple wl(word, lang);
2062                 theSpellChecker()->remove(wl);
2063                 break;
2064         }
2065
2066         case LFUN_PARAGRAPH_PARAMS_APPLY: {
2067                 // Given data, an encoding of the ParagraphParameters
2068                 // generated in the Paragraph dialog, this function sets
2069                 // the current paragraph, or currently selected paragraphs,
2070                 // appropriately.
2071                 // NOTE: This function overrides all existing settings.
2072                 setParagraphs(cur, cmd.argument());
2073                 cur.message(_("Paragraph layout set"));
2074                 break;
2075         }
2076
2077         case LFUN_PARAGRAPH_PARAMS: {
2078                 // Given data, an encoding of the ParagraphParameters as we'd
2079                 // find them in a LyX file, this function modifies the current paragraph,
2080                 // or currently selected paragraphs.
2081                 // NOTE: This function only modifies, and does not override, existing
2082                 // settings.
2083                 setParagraphs(cur, cmd.argument(), true);
2084                 cur.message(_("Paragraph layout set"));
2085                 break;
2086         }
2087
2088         case LFUN_ESCAPE:
2089                 if (cur.selection()) {
2090                         cur.setSelection(false);
2091                 } else {
2092                         cur.undispatched();
2093                         // This used to be LFUN_FINISHED_RIGHT, I think FORWARD is more
2094                         // correct, but I'm not 100% sure -- dov, 071019
2095                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
2096                 }
2097                 break;
2098
2099         case LFUN_OUTLINE_UP:
2100                 outline(OutlineUp, cur);
2101                 setCursor(cur, cur.pit(), 0);
2102                 cur.forceBufferUpdate();
2103                 needsUpdate = true;
2104                 break;
2105
2106         case LFUN_OUTLINE_DOWN:
2107                 outline(OutlineDown, cur);
2108                 setCursor(cur, cur.pit(), 0);
2109                 cur.forceBufferUpdate();
2110                 needsUpdate = true;
2111                 break;
2112
2113         case LFUN_OUTLINE_IN:
2114                 outline(OutlineIn, cur);
2115                 cur.forceBufferUpdate();
2116                 needsUpdate = true;
2117                 break;
2118
2119         case LFUN_OUTLINE_OUT:
2120                 outline(OutlineOut, cur);
2121                 cur.forceBufferUpdate();
2122                 needsUpdate = true;
2123                 break;
2124
2125         default:
2126                 LYXERR(Debug::ACTION, "Command " << cmd << " not DISPATCHED by Text");
2127                 cur.undispatched();
2128                 break;
2129         }
2130
2131         needsUpdate |= (cur.pos() != cur.lastpos()) && cur.selection();
2132
2133         // FIXME: The cursor flag is reset two lines below
2134         // so we need to check here if some of the LFUN did touch that.
2135         // for now only Text::erase() and Text::backspace() do that.
2136         // The plan is to verify all the LFUNs and then to remove this
2137         // singleParUpdate boolean altogether.
2138         if (cur.result().update() & Update::Force) {
2139                 singleParUpdate = false;
2140                 needsUpdate = true;
2141         }
2142
2143         // FIXME: the following code should go in favor of fine grained
2144         // update flag treatment.
2145         if (singleParUpdate) {
2146                 // Inserting characters does not change par height in general. So, try
2147                 // to update _only_ this paragraph. BufferView will detect if a full
2148                 // metrics update is needed anyway.
2149                 cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
2150                 return;
2151         }
2152
2153         if (!needsUpdate
2154             && &oldTopSlice.inset() == &cur.inset()
2155             && oldTopSlice.idx() == cur.idx()
2156             && !sel // sel is a backup of cur.selection() at the beginning of the function.
2157             && !cur.selection())
2158                 // FIXME: it would be better if we could just do this
2159                 //
2160                 //if (cur.result().update() != Update::FitCursor)
2161                 //      cur.noScreenUpdate();
2162                 //
2163                 // But some LFUNs do not set Update::FitCursor when needed, so we
2164                 // do it for all. This is not very harmfull as FitCursor will provoke
2165                 // a full redraw only if needed but still, a proper review of all LFUN
2166                 // should be done and this needsUpdate boolean can then be removed.
2167                 cur.screenUpdateFlags(Update::FitCursor);
2168         else
2169                 cur.screenUpdateFlags(Update::Force | Update::FitCursor);
2170 }
2171
2172
2173 bool Text::getStatus(Cursor & cur, FuncRequest const & cmd,
2174                         FuncStatus & flag) const
2175 {
2176         LASSERT(cur.text() == this, /**/);
2177
2178         FontInfo const & fontinfo = cur.real_current_font.fontInfo();
2179         bool enable = true;
2180         InsetCode code = NO_CODE;
2181
2182         switch (cmd.action()) {
2183
2184         case LFUN_DEPTH_DECREMENT:
2185                 enable = changeDepthAllowed(cur, DEC_DEPTH);
2186                 break;
2187
2188         case LFUN_DEPTH_INCREMENT:
2189                 enable = changeDepthAllowed(cur, INC_DEPTH);
2190                 break;
2191
2192         case LFUN_APPENDIX:
2193                 flag.setOnOff(cur.paragraph().params().startOfAppendix());
2194                 break;
2195
2196         case LFUN_DIALOG_SHOW_NEW_INSET:
2197                 if (cmd.argument() == "bibitem")
2198                         code = BIBITEM_CODE;
2199                 else if (cmd.argument() == "bibtex") {
2200                         code = BIBTEX_CODE;
2201                         // not allowed in description items
2202                         enable = !inDescriptionItem(cur);
2203                 }
2204                 else if (cmd.argument() == "box")
2205                         code = BOX_CODE;
2206                 else if (cmd.argument() == "branch")
2207                         code = BRANCH_CODE;
2208                 else if (cmd.argument() == "citation")
2209                         code = CITE_CODE;
2210                 else if (cmd.argument() == "ert")
2211                         code = ERT_CODE;
2212                 else if (cmd.argument() == "external")
2213                         code = EXTERNAL_CODE;
2214                 else if (cmd.argument() == "float")
2215                         code = FLOAT_CODE;
2216                 else if (cmd.argument() == "graphics")
2217                         code = GRAPHICS_CODE;
2218                 else if (cmd.argument() == "href")
2219                         code = HYPERLINK_CODE;
2220                 else if (cmd.argument() == "include")
2221                         code = INCLUDE_CODE;
2222                 else if (cmd.argument() == "index")
2223                         code = INDEX_CODE;
2224                 else if (cmd.argument() == "index_print")
2225                         code = INDEX_PRINT_CODE;
2226                 else if (cmd.argument() == "nomenclature")
2227                         code = NOMENCL_CODE;
2228                 else if (cmd.argument() == "nomencl_print")
2229                         code = NOMENCL_PRINT_CODE;
2230                 else if (cmd.argument() == "label")
2231                         code = LABEL_CODE;
2232                 else if (cmd.argument() == "note")
2233                         code = NOTE_CODE;
2234                 else if (cmd.argument() == "phantom")
2235                         code = PHANTOM_CODE;
2236                 else if (cmd.argument() == "ref")
2237                         code = REF_CODE;
2238                 else if (cmd.argument() == "space")
2239                         code = SPACE_CODE;
2240                 else if (cmd.argument() == "toc")
2241                         code = TOC_CODE;
2242                 else if (cmd.argument() == "vspace")
2243                         code = VSPACE_CODE;
2244                 else if (cmd.argument() == "wrap")
2245                         code = WRAP_CODE;
2246                 else if (cmd.argument() == "listings")
2247                         code = LISTINGS_CODE;
2248                 break;
2249
2250         case LFUN_ERT_INSERT:
2251                 code = ERT_CODE;
2252                 break;
2253         case LFUN_LISTING_INSERT:
2254                 code = LISTINGS_CODE;
2255                 // not allowed in description items
2256                 enable = !inDescriptionItem(cur);
2257                 break;
2258         case LFUN_FOOTNOTE_INSERT:
2259                 code = FOOT_CODE;
2260                 break;
2261         case LFUN_TABULAR_INSERT:
2262                 code = TABULAR_CODE;
2263                 break;
2264         case LFUN_MARGINALNOTE_INSERT:
2265                 code = MARGIN_CODE;
2266                 break;
2267         case LFUN_FLOAT_INSERT:
2268         case LFUN_FLOAT_WIDE_INSERT:
2269                 // FIXME: If there is a selection, we should check whether there
2270                 // are floats in the selection, but this has performance issues, see
2271                 // LFUN_CHANGE_ACCEPT/REJECT.
2272                 code = FLOAT_CODE;
2273                 if (inDescriptionItem(cur))
2274                         // not allowed in description items
2275                         enable = false;
2276                 else {
2277                         InsetCode const inset_code = cur.inset().lyxCode();
2278
2279                         // algorithm floats cannot be put in another float
2280                         if (to_utf8(cmd.argument()) == "algorithm") {
2281                                 enable = inset_code != WRAP_CODE && inset_code != FLOAT_CODE;
2282                                 break;
2283                         }
2284
2285                         // for figures and tables: only allow in another
2286                         // float or wrap if it is of the same type and
2287                         // not a subfloat already
2288                         if(cur.inset().lyxCode() == code) {
2289                                 InsetFloat const & ins =
2290                                         static_cast<InsetFloat const &>(cur.inset());
2291                                 enable = ins.params().type == to_utf8(cmd.argument())
2292                                         && !ins.params().subfloat;
2293                         } else if(cur.inset().lyxCode() == WRAP_CODE) {
2294                                 InsetWrap const & ins =
2295                                         static_cast<InsetWrap const &>(cur.inset());
2296                                 enable = ins.params().type == to_utf8(cmd.argument());
2297                         }
2298                 }
2299                 break;
2300         case LFUN_WRAP_INSERT:
2301                 code = WRAP_CODE;
2302                 // not allowed in description items
2303                 enable = !inDescriptionItem(cur);
2304                 break;
2305         case LFUN_FLOAT_LIST_INSERT: {
2306                 code = FLOAT_LIST_CODE;
2307                 // not allowed in description items
2308                 enable = !inDescriptionItem(cur);
2309                 if (enable) {
2310                         FloatList const & floats = cur.buffer()->params().documentClass().floats();
2311                         FloatList::const_iterator cit = floats[to_ascii(cmd.argument())];
2312                         // make sure we know about such floats
2313                         if (cit == floats.end() ||
2314                                         // and that we know how to generate a list of them
2315                             (!cit->second.needsFloatPkg() && cit->second.listCommand().empty())) {
2316                                 flag.setUnknown(true);
2317                                 // probably not necessary, but...
2318                                 enable = false;
2319                         }
2320                 }
2321                 break;
2322         }
2323         case LFUN_CAPTION_INSERT:
2324                 code = CAPTION_CODE;
2325                 // not allowed in description items
2326                 enable = !inDescriptionItem(cur);
2327                 break;
2328         case LFUN_NOTE_INSERT:
2329                 code = NOTE_CODE;
2330                 // in commands (sections etc.) and description items,
2331                 // only Notes are allowed
2332                 enable = (cmd.argument().empty() || cmd.getArg(0) == "Note" ||
2333                           (!cur.paragraph().layout().isCommand()
2334                            && !inDescriptionItem(cur)));
2335                 break;
2336         case LFUN_FLEX_INSERT: {
2337                 code = FLEX_CODE;
2338                 string s = cmd.getArg(0);
2339                 InsetLayout il =
2340                         cur.buffer()->params().documentClass().insetLayout(from_utf8(s));
2341                 if (il.lyxtype() != InsetLayout::CHARSTYLE &&
2342                     il.lyxtype() != InsetLayout::CUSTOM &&
2343                     il.lyxtype() != InsetLayout::ELEMENT &&
2344                     il.lyxtype ()!= InsetLayout::STANDARD)
2345                         enable = false;
2346                 break;
2347                 }
2348         case LFUN_BOX_INSERT:
2349                 code = BOX_CODE;
2350                 break;
2351         case LFUN_BRANCH_INSERT:
2352                 code = BRANCH_CODE;
2353                 if (cur.buffer()->masterBuffer()->params().branchlist().empty()
2354                     && cur.buffer()->params().branchlist().empty())
2355                         enable = false;
2356                 break;
2357         case LFUN_PHANTOM_INSERT:
2358                 code = PHANTOM_CODE;
2359                 break;
2360         case LFUN_LABEL_INSERT:
2361                 code = LABEL_CODE;
2362                 break;
2363         case LFUN_LINE_INSERT:
2364                 code = LINE_CODE;
2365                 break;
2366         case LFUN_INFO_INSERT:
2367                 code = INFO_CODE;
2368                 break;
2369         case LFUN_ARGUMENT_INSERT: {
2370                 code = ARG_CODE;
2371                 Layout const & lay = cur.paragraph().layout();
2372                 int const numargs = lay.reqargs + lay.optargs;
2373                 enable = cur.paragraph().insetList().count(ARG_CODE) < numargs;
2374                 break;
2375         }
2376         case LFUN_INDEX_INSERT:
2377                 code = INDEX_CODE;
2378                 break;
2379         case LFUN_INDEX_PRINT:
2380                 code = INDEX_PRINT_CODE;
2381                 // not allowed in description items
2382                 enable = !inDescriptionItem(cur);
2383                 break;
2384         case LFUN_NOMENCL_INSERT:
2385                 if (cur.selIsMultiCell() || cur.selIsMultiLine()) {
2386                         enable = false;
2387                         break;
2388                 }
2389                 code = NOMENCL_CODE;
2390                 break;
2391         case LFUN_NOMENCL_PRINT:
2392                 code = NOMENCL_PRINT_CODE;
2393                 // not allowed in description items
2394                 enable = !inDescriptionItem(cur);
2395                 break;
2396         case LFUN_TOC_INSERT:
2397                 code = TOC_CODE;
2398                 // not allowed in description items
2399                 enable = !inDescriptionItem(cur);
2400                 break;
2401         case LFUN_HYPERLINK_INSERT:
2402                 if (cur.selIsMultiCell() || cur.selIsMultiLine()) {
2403                         enable = false;
2404                         break;
2405                 }
2406                 code = HYPERLINK_CODE;
2407                 break;
2408         case LFUN_QUOTE_INSERT:
2409                 // always allow this, since we will inset a raw quote
2410                 // if an inset is not allowed.
2411                 break;
2412         case LFUN_SPECIALCHAR_INSERT:
2413                 code = SPECIALCHAR_CODE;
2414                 break;
2415         case LFUN_SPACE_INSERT:
2416                 // slight hack: we know this is allowed in math mode
2417                 if (cur.inTexted())
2418                         code = SPACE_CODE;
2419                 break;
2420         case LFUN_PREVIEW_INSERT:
2421                 code = PREVIEW_CODE;
2422                 break;
2423
2424         case LFUN_MATH_INSERT:
2425         case LFUN_MATH_AMS_MATRIX:
2426         case LFUN_MATH_MATRIX:
2427         case LFUN_MATH_DELIM:
2428         case LFUN_MATH_BIGDELIM:
2429         case LFUN_MATH_DISPLAY:
2430         case LFUN_MATH_MODE:
2431         case LFUN_MATH_MACRO:
2432         case LFUN_MATH_SUBSCRIPT:
2433         case LFUN_MATH_SUPERSCRIPT:
2434                 code = MATH_HULL_CODE;
2435                 break;
2436
2437         case LFUN_REGEXP_MODE:
2438                 code = MATH_HULL_CODE;
2439                 enable = cur.buffer()->isInternal() && !cur.inRegexped();
2440                 break;
2441
2442         case LFUN_INSET_MODIFY:
2443                 // We need to disable this, because we may get called for a
2444                 // tabular cell via
2445                 // InsetTabular::getStatus() -> InsetText::getStatus()
2446                 // and we don't handle LFUN_INSET_MODIFY.
2447                 enable = false;
2448                 break;
2449
2450         case LFUN_FONT_EMPH:
2451                 flag.setOnOff(fontinfo.emph() == FONT_ON);
2452                 enable = !cur.inset().getLayout().isPassThru();
2453                 break;
2454
2455         case LFUN_FONT_ITAL:
2456                 flag.setOnOff(fontinfo.shape() == ITALIC_SHAPE);
2457                 enable = !cur.inset().getLayout().isPassThru();
2458                 break;
2459
2460         case LFUN_FONT_NOUN:
2461                 flag.setOnOff(fontinfo.noun() == FONT_ON);
2462                 enable = !cur.inset().getLayout().isPassThru();
2463                 break;
2464
2465         case LFUN_FONT_BOLD:
2466         case LFUN_FONT_BOLDSYMBOL:
2467                 flag.setOnOff(fontinfo.series() == BOLD_SERIES);
2468                 enable = !cur.inset().getLayout().isPassThru();
2469                 break;
2470
2471         case LFUN_FONT_SANS:
2472                 flag.setOnOff(fontinfo.family() == SANS_FAMILY);
2473                 enable = !cur.inset().getLayout().isPassThru();
2474                 break;
2475
2476         case LFUN_FONT_ROMAN:
2477                 flag.setOnOff(fontinfo.family() == ROMAN_FAMILY);
2478                 enable = !cur.inset().getLayout().isPassThru();
2479                 break;
2480
2481         case LFUN_FONT_TYPEWRITER:
2482                 flag.setOnOff(fontinfo.family() == TYPEWRITER_FAMILY);
2483                 enable = !cur.inset().getLayout().isPassThru();
2484                 break;
2485
2486         case LFUN_CUT:
2487         case LFUN_COPY:
2488                 enable = cur.selection();
2489                 break;
2490
2491         case LFUN_PASTE: {
2492                 if (cmd.argument().empty()) {
2493                         if (theClipboard().isInternal())
2494                                 enable = cap::numberOfSelections() > 0;
2495                         else
2496                                 enable = !theClipboard().empty();
2497                         break;
2498                 }
2499
2500                 // we have an argument
2501                 string const arg = to_utf8(cmd.argument());
2502                 if (isStrUnsignedInt(arg)) {
2503                         // it's a number and therefore means the internal stack
2504                         unsigned int n = convert<unsigned int>(arg);
2505                         enable = cap::numberOfSelections() > n;
2506                         break;
2507                 }
2508
2509                 // explicit graphics type?
2510                 Clipboard::GraphicsType type = Clipboard::AnyGraphicsType;
2511                 if ((arg == "pdf" && (type = Clipboard::PdfGraphicsType))
2512                           || (arg == "png" && (type = Clipboard::PngGraphicsType))
2513                           || (arg == "jpeg" && (type = Clipboard::JpegGraphicsType))
2514                           || (arg == "linkback" &&  (type = Clipboard::LinkBackGraphicsType))
2515                           || (arg == "emf" &&  (type = Clipboard::EmfGraphicsType))
2516                           || (arg == "wmf" &&  (type = Clipboard::WmfGraphicsType))) {
2517                         enable = theClipboard().hasGraphicsContents(type);
2518                         break;
2519                 }
2520
2521                 // unknown argument
2522                 enable = false;
2523                 break;
2524          }
2525
2526         case LFUN_CLIPBOARD_PASTE:
2527                 enable = !theClipboard().empty();
2528                 break;
2529
2530         case LFUN_PRIMARY_SELECTION_PASTE:
2531                 enable = cur.selection() || !theSelection().empty();
2532                 break;
2533
2534         case LFUN_SELECTION_PASTE:
2535                 enable = cap::selection();
2536                 break;
2537
2538         case LFUN_PARAGRAPH_MOVE_UP:
2539                 enable = cur.pit() > 0 && !cur.selection();
2540                 break;
2541
2542         case LFUN_PARAGRAPH_MOVE_DOWN:
2543                 enable = cur.pit() < cur.lastpit() && !cur.selection();
2544                 break;
2545
2546         case LFUN_CHANGE_ACCEPT:
2547         case LFUN_CHANGE_REJECT:
2548                 // In principle, these LFUNs should only be enabled if there
2549                 // is a change at the current position/in the current selection.
2550                 // However, without proper optimizations, this will inevitably
2551                 // result in unacceptable performance - just imagine a user who
2552                 // wants to select the complete content of a long document.
2553                 if (!cur.selection())
2554                         enable = cur.paragraph().isChanged(cur.pos());
2555                 else
2556                         // TODO: context-sensitive enabling of LFUN_CHANGE_ACCEPT/REJECT
2557                         // for selections.
2558                         enable = true;
2559                 break;
2560
2561         case LFUN_OUTLINE_UP:
2562         case LFUN_OUTLINE_DOWN:
2563         case LFUN_OUTLINE_IN:
2564         case LFUN_OUTLINE_OUT:
2565                 // FIXME: LyX is not ready for outlining within inset.
2566                 enable = isMainText()
2567                         && cur.paragraph().layout().toclevel != Layout::NOT_IN_TOC;
2568                 break;
2569
2570         case LFUN_NEWLINE_INSERT:
2571                 // LaTeX restrictions (labels or empty par)
2572                 enable = (cur.pos() > cur.paragraph().beginOfBody());
2573                 break;
2574
2575         case LFUN_TAB_INSERT:
2576         case LFUN_TAB_DELETE:
2577                 enable = cur.inset().getLayout().isPassThru();
2578                 break;
2579
2580         case LFUN_SET_GRAPHICS_GROUP: {
2581                 InsetGraphics * ins = graphics::getCurrentGraphicsInset(cur);
2582                 if (!ins)
2583                         enable = false;
2584                 else
2585                         flag.setOnOff(to_utf8(cmd.argument()) == ins->getParams().groupId);
2586                 break;
2587         }
2588
2589         case LFUN_NEWPAGE_INSERT:
2590                 // not allowed in description items
2591                 code = NEWPAGE_CODE;
2592                 enable = !inDescriptionItem(cur);
2593                 break;
2594
2595         case LFUN_DATE_INSERT: {
2596                 string const format = cmd.argument().empty()
2597                         ? lyxrc.date_insert_format : to_utf8(cmd.argument());
2598                 enable = support::os::is_valid_strftime(format);
2599                 break;
2600         }
2601
2602         case LFUN_LANGUAGE:
2603                 enable = !cur.inset().getLayout().isPassThru();
2604                 flag.setOnOff(to_utf8(cmd.argument()) == cur.real_current_font.language()->lang());
2605                 break;
2606
2607         case LFUN_BREAK_PARAGRAPH:
2608                 enable = cur.inset().getLayout().isMultiPar();
2609                 break;
2610
2611         case LFUN_SPELLING_ADD:
2612         case LFUN_SPELLING_IGNORE:
2613         case LFUN_SPELLING_REMOVE:
2614                 enable = theSpellChecker();
2615                 break;
2616
2617         case LFUN_LAYOUT:
2618                 enable = !cur.inset().forcePlainLayout();
2619                 break;
2620
2621         case LFUN_LAYOUT_PARAGRAPH:
2622         case LFUN_PARAGRAPH_PARAMS:
2623         case LFUN_PARAGRAPH_PARAMS_APPLY:
2624         case LFUN_PARAGRAPH_UPDATE:
2625                 enable = cur.inset().allowParagraphCustomization();
2626                 break;
2627
2628         // FIXME: why are accent lfuns forbidden with pass_thru layouts?
2629         case LFUN_ACCENT_ACUTE:
2630         case LFUN_ACCENT_BREVE:
2631         case LFUN_ACCENT_CARON:
2632         case LFUN_ACCENT_CEDILLA:
2633         case LFUN_ACCENT_CIRCLE:
2634         case LFUN_ACCENT_CIRCUMFLEX:
2635         case LFUN_ACCENT_DOT:
2636         case LFUN_ACCENT_GRAVE:
2637         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
2638         case LFUN_ACCENT_MACRON:
2639         case LFUN_ACCENT_OGONEK:
2640         case LFUN_ACCENT_TIE:
2641         case LFUN_ACCENT_TILDE:
2642         case LFUN_ACCENT_UMLAUT:
2643         case LFUN_ACCENT_UNDERBAR:
2644         case LFUN_ACCENT_UNDERDOT:
2645         case LFUN_FONT_DEFAULT:
2646         case LFUN_FONT_FRAK:
2647         case LFUN_FONT_SIZE:
2648         case LFUN_FONT_STATE:
2649         case LFUN_FONT_UNDERLINE:
2650         case LFUN_FONT_STRIKEOUT:
2651         case LFUN_FONT_UULINE:
2652         case LFUN_FONT_UWAVE:
2653         case LFUN_TEXTSTYLE_APPLY:
2654         case LFUN_TEXTSTYLE_UPDATE:
2655                 enable = !cur.inset().getLayout().isPassThru();
2656                 break;
2657
2658         case LFUN_WORD_DELETE_FORWARD:
2659         case LFUN_WORD_DELETE_BACKWARD:
2660         case LFUN_LINE_DELETE:
2661         case LFUN_WORD_FORWARD:
2662         case LFUN_WORD_BACKWARD:
2663         case LFUN_WORD_RIGHT:
2664         case LFUN_WORD_LEFT:
2665         case LFUN_CHAR_FORWARD:
2666         case LFUN_CHAR_FORWARD_SELECT:
2667         case LFUN_CHAR_BACKWARD:
2668         case LFUN_CHAR_BACKWARD_SELECT:
2669         case LFUN_CHAR_LEFT:
2670         case LFUN_CHAR_LEFT_SELECT:
2671         case LFUN_CHAR_RIGHT:
2672         case LFUN_CHAR_RIGHT_SELECT:
2673         case LFUN_UP:
2674         case LFUN_UP_SELECT:
2675         case LFUN_DOWN:
2676         case LFUN_DOWN_SELECT:
2677         case LFUN_PARAGRAPH_UP_SELECT:
2678         case LFUN_PARAGRAPH_DOWN_SELECT:
2679         case LFUN_LINE_BEGIN_SELECT:
2680         case LFUN_LINE_END_SELECT:
2681         case LFUN_WORD_FORWARD_SELECT:
2682         case LFUN_WORD_BACKWARD_SELECT:
2683         case LFUN_WORD_RIGHT_SELECT:
2684         case LFUN_WORD_LEFT_SELECT:
2685         case LFUN_WORD_SELECT:
2686         case LFUN_SECTION_SELECT:
2687         case LFUN_BUFFER_BEGIN:
2688         case LFUN_BUFFER_END:
2689         case LFUN_BUFFER_BEGIN_SELECT:
2690         case LFUN_BUFFER_END_SELECT:
2691         case LFUN_INSET_BEGIN:
2692         case LFUN_INSET_END:
2693         case LFUN_INSET_BEGIN_SELECT:
2694         case LFUN_INSET_END_SELECT:
2695         case LFUN_INSET_SELECT_ALL:
2696         case LFUN_PARAGRAPH_UP:
2697         case LFUN_PARAGRAPH_DOWN:
2698         case LFUN_LINE_BEGIN:
2699         case LFUN_LINE_END:
2700         case LFUN_CHAR_DELETE_FORWARD:
2701         case LFUN_CHAR_DELETE_BACKWARD:
2702         case LFUN_INSET_INSERT:
2703         case LFUN_WORD_UPCASE:
2704         case LFUN_WORD_LOWCASE:
2705         case LFUN_WORD_CAPITALIZE:
2706         case LFUN_CHARS_TRANSPOSE:
2707         case LFUN_SERVER_GET_XY:
2708         case LFUN_SERVER_SET_XY:
2709         case LFUN_SERVER_GET_LAYOUT:
2710         case LFUN_SELF_INSERT:
2711         case LFUN_UNICODE_INSERT:
2712         case LFUN_THESAURUS_ENTRY:
2713         case LFUN_ESCAPE:
2714                 // these are handled in our dispatch()
2715                 enable = true;
2716                 break;
2717
2718         default:
2719                 return false;
2720         }
2721
2722         if (code != NO_CODE
2723             && (cur.empty()
2724                 || !cur.inset().insetAllowed(code)
2725                 || cur.paragraph().layout().pass_thru))
2726                 enable = false;
2727
2728         flag.setEnabled(enable);
2729         return true;
2730 }
2731
2732
2733 void Text::pasteString(Cursor & cur, docstring const & clip,
2734                 bool asParagraphs)
2735 {
2736         cur.clearSelection();
2737         if (!clip.empty()) {
2738                 cur.recordUndo();
2739                 if (asParagraphs)
2740                         insertStringAsParagraphs(cur, clip, cur.current_font);
2741                 else
2742                         insertStringAsLines(cur, clip, cur.current_font);
2743         }
2744 }
2745
2746
2747 // FIXME: an item inset would make things much easier.
2748 bool Text::inDescriptionItem(Cursor & cur) const
2749 {
2750         Paragraph & par = cur.paragraph();
2751         pos_type const pos = cur.pos();
2752         pos_type const body_pos = par.beginOfBody();
2753
2754         if (par.layout().latextype != LATEX_LIST_ENVIRONMENT
2755             && (par.layout().latextype != LATEX_ITEM_ENVIRONMENT
2756                 || par.layout().margintype != MARGIN_FIRST_DYNAMIC))
2757                 return false;
2758
2759         return (pos < body_pos
2760                 || (pos == body_pos
2761                     && (pos == 0 || par.getChar(pos - 1) != ' ')));
2762 }
2763
2764 } // namespace lyx