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 "BranchList.h"
  21 #include "FloatList.h"
  22 #include "FuncStatus.h"
  23 #include "Buffer.h"
  24 #include "buffer_funcs.h"
  25 #include "BufferParams.h"
  26 #include "BufferView.h"
  27 #include "Changes.h"
  28 #include "Cursor.h"
  29 #include "CutAndPaste.h"
  30 #include "DispatchResult.h"
  31 #include "ErrorList.h"
  32 #include "factory.h"
  33 #include "FuncRequest.h"
  34 #include "InsetList.h"
  35 #include "Intl.h"
  36 #include "Language.h"
  37 #include "Layout.h"
  38 #include "LyXAction.h"
  39 #include "LyX.h"
  40 #include "Lexer.h"
  41 #include "LyXRC.h"
  42 #include "Paragraph.h"
  43 #include "ParagraphParameters.h"
  44 #include "SpellChecker.h"
  45 #include "TextClass.h"
  46 #include "TextMetrics.h"
  47 #include "Thesaurus.h"
  48 #include "WordLangTuple.h"
  49
  50 #include "frontends/alert.h"
  51 #include "frontends/Application.h"
  52 #include "frontends/Clipboard.h"
  53 #include "frontends/Selection.h"
  54
  55 #include "insets/InsetArgument.h"
  56 #include "insets/InsetCollapsible.h"
  57 #include "insets/InsetCommand.h"
  58 #include "insets/InsetExternal.h"
  59 #include "insets/InsetFloat.h"
  60 #include "insets/InsetFloatList.h"
  61 #include "insets/InsetGraphics.h"
  62 #include "insets/InsetGraphicsParams.h"
  63 #include "insets/InsetInfo.h"
  64 #include "insets/InsetIPAMacro.h"
  65 #include "insets/InsetNewline.h"
  66 #include "insets/InsetQuotes.h"
  67 #include "insets/InsetSpecialChar.h"
  68 #include "insets/InsetText.h"
  69 #include "insets/InsetWrap.h"
  70
  71 #include "support/convert.h"
  72 #include "support/debug.h"
  73 #include "support/filetools.h"
  74 #include "support/gettext.h"
  75 #include "support/lassert.h"
  76 #include "support/limited_stack.h"
  77 #include "support/lstrings.h"
  78 #include "support/lyxalgo.h"
  79 #include "support/lyxtime.h"
  80 #include "support/os.h"
  81 #include "support/regex.h"
  82
  83 #include "mathed/InsetMathHull.h"
  84 #include "mathed/InsetMathMacroTemplate.h"
  85 #include "lyxfind.h"
  86
  87 #include <clocale>
  88 #include <sstream>
  89
  90 using namespace std;
  91 using namespace lyx::support;
  92
  93 namespace lyx {
  94
  95 using cap::copySelection;
  96 using cap::copySelectionToTemp;
  97 using cap::cutSelection;
  98 using cap::cutSelectionToTemp;
  99 using cap::pasteFromStack;
 100 using cap::pasteFromTemp;
 101 using cap::pasteClipboardText;
 102 using cap::pasteClipboardGraphics;
 103 using cap::replaceSelection;
 104 using cap::grabAndEraseSelection;
 105 using cap::selClearOrDel;
 106 using cap::pasteSimpleText;
 107 using frontend::Clipboard;
 108
 109 // globals...
 110 typedef limited_stack<pair<docstring, Font>> FontStack;
 111 static FontStack freeFonts(15);
 112 static bool toggleall = false;
 113
 114 static void toggleAndShow(Cursor & cur, Text * text,
 115         Font const & font, bool togall = true)
 116 {
 117         text->toggleFree(cur, font, togall);
 118
 119         if (font.language() != ignore_language ||
 120             font.fontInfo().number() != FONT_IGNORE) {
 121                 TextMetrics const & tm = cur.bv().textMetrics(text);
 122                 if (cur.boundary() != tm.isRTLBoundary(cur.pit(), cur.pos(),
 123                                                        cur.real_current_font))
 124                         text->setCursor(cur, cur.pit(), cur.pos(),
 125                                         false, !cur.boundary());
 126         }
 127 }
 128
 129
 130 static void moveCursor(Cursor & cur, bool selecting)
 131 {
 132         if (selecting || cur.mark())
 133                 cur.setSelection();
 134 }
 135
 136
 137 static void finishChange(Cursor & cur, bool selecting)
 138 {
 139         cur.finishUndo();
 140         moveCursor(cur, selecting);
 141 }
 142
 143
 144 static void mathDispatch(Cursor & cur, FuncRequest const & cmd)
 145 {
 146         cur.recordUndo();
 147         docstring sel = cur.selectionAsString(false);
 148
 149         // It may happen that sel is empty but there is a selection
 150         replaceSelection(cur);
 151
 152         // Is this a valid formula?
 153         bool valid = true;
 154
 155         if (sel.empty()) {
 156 #ifdef ENABLE_ASSERTIONS
 157                 const int old_pos = cur.pos();
 158 #endif
 159                 cur.insert(new InsetMathHull(cur.buffer(), hullSimple));
 160 #ifdef ENABLE_ASSERTIONS
 161                 LATTEST(old_pos == cur.pos());
 162 #endif
 163                 cur.nextInset()->edit(cur, true);
 164                 if (cmd.action() != LFUN_MATH_MODE)
 165                         // LFUN_MATH_MODE has a different meaning in math mode
 166                         cur.dispatch(cmd);
 167         } else {
 168                 InsetMathHull * formula = new InsetMathHull(cur.buffer());
 169                 string const selstr = to_utf8(sel);
 170                 istringstream is(selstr);
 171                 Lexer lex;
 172                 lex.setStream(is);
 173                 if (!formula->readQuiet(lex)) {
 174                         // No valid formula, let's try with delims
 175                         is.str("$" + selstr + "$");
 176                         lex.setStream(is);
 177                         if (!formula->readQuiet(lex)) {
 178                                 // Still not valid, leave it as is
 179                                 valid = false;
 180                                 delete formula;
 181                                 cur.insert(sel);
 182                         }
 183                 }
 184                 if (valid) {
 185                         cur.insert(formula);
 186                         cur.nextInset()->edit(cur, true);
 187                         LASSERT(cur.inMathed(), return);
 188                         cur.pos() = 0;
 189                         cur.resetAnchor();
 190                         cur.selection(true);
 191                         cur.pos() = cur.lastpos();
 192                         if (cmd.action() != LFUN_MATH_MODE)
 193                                 // LFUN_MATH_MODE has a different meaning in math mode
 194                                 cur.dispatch(cmd);
 195                         cur.clearSelection();
 196                         cur.pos() = cur.lastpos();
 197                 }
 198         }
 199         if (valid)
 200                 cur.message(from_utf8(N_("Math editor mode")));
 201         else
 202                 cur.message(from_utf8(N_("No valid math formula")));
 203 }
 204
 205
 206 void regexpDispatch(Cursor & cur, FuncRequest const & cmd)
 207 {
 208         LASSERT(cmd.action() == LFUN_REGEXP_MODE, return);
 209         if (cur.inRegexped()) {
 210                 cur.message(_("Already in regular expression mode"));
 211                 return;
 212         }
 213         cur.recordUndo();
 214         docstring sel = cur.selectionAsString(false);
 215
 216         // It may happen that sel is empty but there is a selection
 217         replaceSelection(cur);
 218
 219         cur.insert(new InsetMathHull(cur.buffer(), hullRegexp));
 220         cur.nextInset()->edit(cur, true);
 221         cur.niceInsert(sel);
 222
 223         cur.message(_("Regexp editor mode"));
 224 }
 225
 226
 227 static void specialChar(Cursor & cur, InsetSpecialChar::Kind kind)
 228 {
 229         cur.recordUndo();
 230         cap::replaceSelection(cur);
 231         cur.insert(new InsetSpecialChar(kind));
 232         cur.posForward();
 233 }
 234
 235
 236 static void ipaChar(Cursor & cur, InsetIPAChar::Kind kind)
 237 {
 238         cur.recordUndo();
 239         cap::replaceSelection(cur);
 240         cur.insert(new InsetIPAChar(kind));
 241         cur.posForward();
 242 }
 243
 244
 245 static bool doInsertInset(Cursor & cur, Text * text,
 246         FuncRequest const & cmd, bool edit, bool pastesel)
 247 {
 248         Buffer & buffer = cur.bv().buffer();
 249         BufferParams const & bparams = buffer.params();
 250         Inset * inset = createInset(&buffer, cmd);
 251         if (!inset)
 252                 return false;
 253
 254         if (InsetCollapsible * ci = inset->asInsetCollapsible())
 255                 ci->setButtonLabel();
 256
 257         cur.recordUndo();
 258         if (cmd.action() == LFUN_ARGUMENT_INSERT) {
 259                 bool cotextinsert = false;
 260                 InsetArgument const * const ia = static_cast<InsetArgument const *>(inset);
 261                 Layout const & lay = cur.paragraph().layout();
 262                 Layout::LaTeXArgMap args = lay.args();
 263                 Layout::LaTeXArgMap::const_iterator const lait = args.find(ia->name());
 264                 if (lait != args.end())
 265                         cotextinsert = (*lait).second.insertcotext;
 266                 else {
 267                         InsetLayout const & il = cur.inset().getLayout();
 268                         args = il.args();
 269                         Layout::LaTeXArgMap::const_iterator const ilait = args.find(ia->name());
 270                         if (ilait != args.end())
 271                                 cotextinsert = (*ilait).second.insertcotext;
 272                 }
 273                 // The argument requests to insert a copy of the co-text to the inset
 274                 if (cotextinsert) {
 275                         docstring ds;
 276                         // If we have a selection within a paragraph, use this
 277                         if (cur.selection() && cur.selBegin().pit() == cur.selEnd().pit())
 278                                 ds = cur.selectionAsString(false);
 279                         // else use the whole paragraph
 280                         else
 281                                 ds = cur.paragraph().asString();
 282                         text->insertInset(cur, inset);
 283                         if (edit)
 284                                 inset->edit(cur, true);
 285                         // Now put co-text into inset
 286                         Font const f(inherit_font, cur.current_font.language());
 287                         if (!ds.empty()) {
 288                                 cur.text()->insertStringAsLines(cur, ds, f);
 289                                 cur.leaveInset(*inset);
 290                         }
 291                         return true;
 292                 }
 293         }
 294
 295         bool gotsel = false;
 296         if (cur.selection()) {
 297                 if (cmd.action() == LFUN_INDEX_INSERT)
 298                         copySelectionToTemp(cur);
 299                 else {
 300                         cutSelectionToTemp(cur, pastesel);
 301                         /* Move layout information inside the inset if the whole
 302                          * paragraph and the inset allows setting layout
 303                          * FIXME: this does not work as expected when change tracking is on
 304                          *   However, we do not really know what to do in this case.
 305                          */
 306                         if (cur.paragraph().empty() && !inset->forcePlainLayout())
 307                                 cur.paragraph().setPlainOrDefaultLayout(bparams.documentClass());
 308                 }
 309                 cur.clearSelection();
 310                 gotsel = true;
 311         } else if (cmd.action() == LFUN_INDEX_INSERT) {
 312                 gotsel = text->selectWordWhenUnderCursor(cur, WHOLE_WORD);
 313                 copySelectionToTemp(cur);
 314                 cur.clearSelection();
 315         }
 316         text->insertInset(cur, inset);
 317
 318         if (edit)
 319                 inset->edit(cur, true);
 320
 321         if (!gotsel || !pastesel)
 322                 return true;
 323
 324         pasteFromTemp(cur, cur.buffer()->errorList("Paste"));
 325         cur.buffer()->errors("Paste");
 326         cur.clearSelection(); // bug 393
 327         cur.finishUndo();
 328         InsetText * inset_text = inset->asInsetText();
 329         if (inset_text) {
 330                 inset_text->fixParagraphsFont();
 331                 cur.pos() = 0;
 332                 cur.pit() = 0;
 333                 // FIXME: what does this do?
 334                 if (cmd.action() == LFUN_FLEX_INSERT)
 335                         return true;
 336                 Cursor old = cur;
 337                 cur.leaveInset(*inset);
 338                 if (cmd.action() == LFUN_PREVIEW_INSERT
 339                         || cmd.action() == LFUN_IPA_INSERT)
 340                         // trigger preview
 341                         notifyCursorLeavesOrEnters(old, cur);
 342         } else {
 343                 cur.leaveInset(*inset);
 344                 // reset surrounding par to default
 345                 DocumentClass const & dc = bparams.documentClass();
 346                 docstring const layoutname = inset->usePlainLayout()
 347                         ? dc.plainLayoutName()
 348                         : dc.defaultLayoutName();
 349                 text->setLayout(cur, layoutname);
 350         }
 351         return true;
 352 }
 353
 354
 355 /// the type of outline operation
 356 enum OutlineOp {
 357         OutlineUp, // Move this header with text down
 358         OutlineDown,   // Move this header with text up
 359         OutlineIn, // Make this header deeper
 360         OutlineOut // Make this header shallower
 361 };
 362
 363
 364 static void insertSeparator(Cursor & cur, depth_type const depth)
 365 {
 366         Buffer & buf = *cur.buffer();
 367         lyx::dispatch(FuncRequest(LFUN_PARAGRAPH_BREAK));
 368         DocumentClass const & tc = buf.params().documentClass();
 369         lyx::dispatch(FuncRequest(LFUN_LAYOUT, from_ascii("\"") + tc.plainLayout().name()
 370                                   + from_ascii("\" ignoreautonests")));
 371         // FIXME: Bibitem mess!
 372         if (cur.prevInset() && cur.prevInset()->lyxCode() == BIBITEM_CODE)
 373                 lyx::dispatch(FuncRequest(LFUN_CHAR_DELETE_BACKWARD));
 374         lyx::dispatch(FuncRequest(LFUN_SEPARATOR_INSERT, "plain"));
 375         while (cur.paragraph().params().depth() > depth)
 376                 lyx::dispatch(FuncRequest(LFUN_DEPTH_DECREMENT));
 377 }
 378
 379
 380 static void outline(OutlineOp mode, Cursor & cur, Text * text)
 381 {
 382         Buffer & buf = *cur.buffer();
 383         pit_type & pit = cur.pit();
 384         ParagraphList & pars = buf.text().paragraphs();
 385         ParagraphList::iterator const bgn = pars.begin();
 386         // The first paragraph of the area to be copied:
 387         ParagraphList::iterator start = lyx::next(bgn, pit);
 388         // The final paragraph of area to be copied:
 389         ParagraphList::iterator finish = start;
 390         ParagraphList::iterator const end = pars.end();
 391         depth_type const current_depth = cur.paragraph().params().depth();
 392
 393         int const thistoclevel = buf.text().getTocLevel(distance(bgn, start));
 394         int toclevel;
 395
 396         // Move out (down) from this section header
 397         if (finish != end)
 398                 ++finish;
 399
 400         // Seek the one (on same level) below
 401         for (; finish != end; ++finish) {
 402                 toclevel = buf.text().getTocLevel(distance(bgn, finish));
 403                 if (toclevel != Layout::NOT_IN_TOC && toclevel <= thistoclevel)
 404                         break;
 405         }
 406
 407         switch (mode) {
 408                 case OutlineUp: {
 409                         if (start == pars.begin())
 410                                 // Nothing to move.
 411                                 return;
 412                         ParagraphList::iterator dest = start;
 413                         // Move out (up) from this header
 414                         if (dest == bgn)
 415                                 return;
 416                         // Search previous same-level header above
 417                         do {
 418                                 --dest;
 419                                 toclevel = buf.text().getTocLevel(distance(bgn, dest));
 420                         } while(dest != bgn
 421                                 && (toclevel == Layout::NOT_IN_TOC
 422                                     || toclevel > thistoclevel));
 423                         // Not found; do nothing
 424                         if (toclevel == Layout::NOT_IN_TOC || toclevel > thistoclevel)
 425                                 return;
 426                         pit_type newpit = distance(bgn, dest);
 427                         pit_type const len = distance(start, finish);
 428                         pit_type const deletepit = pit + len;
 429                         buf.undo().recordUndo(cur, newpit, deletepit - 1);
 430                         // If we move an environment upwards, make sure it is
 431                         // separated from its new neighbour below:
 432                         // If an environment of the same layout follows, and the moved
 433                         // paragraph sequence does not end with a separator, insert one.
 434                         ParagraphList::iterator lastmoved = finish;
 435                         --lastmoved;
 436                         if (start->layout().isEnvironment()
 437                             && dest->layout() == start->layout()
 438                             && !lastmoved->isEnvSeparator(lastmoved->beginOfBody())) {
 439                                 cur.pit() = distance(bgn, lastmoved);
 440                                 cur.pos() = cur.lastpos();
 441                                 insertSeparator(cur, current_depth);
 442                                 cur.pit() = pit;
 443                         }
 444                         // Likewise, if we moved an environment upwards, make sure it
 445                         // is separated from its new neighbour above.
 446                         // The paragraph before the target of movement
 447                         if (dest != bgn) {
 448                                 ParagraphList::iterator before = dest;
 449                                 --before;
 450                                 // Get the parent paragraph (outer in nested context)
 451                                 pit_type const parent =
 452                                         before->params().depth() > current_depth
 453                                                 ? text->depthHook(distance(bgn, before), current_depth)
 454                                                 : distance(bgn, before);
 455                                 // If a environment with same layout preceeds the moved one in the new
 456                                 // position, and there is no separator yet, insert one.
 457                                 if (start->layout().isEnvironment()
 458                                     && pars[parent].layout() == start->layout()
 459                                     && !before->isEnvSeparator(before->beginOfBody())) {
 460                                         cur.pit() = distance(bgn, before);
 461                                         cur.pos() = cur.lastpos();
 462                                         insertSeparator(cur, current_depth);
 463                                         cur.pit() = pit;
 464                                 }
 465                         }
 466                         newpit = distance(bgn, dest);
 467                         pars.splice(dest, start, finish);
 468                         cur.pit() = newpit;
 469                         break;
 470                 }
 471                 case OutlineDown: {
 472                         if (finish == end)
 473                                 // Nothing to move.
 474                                 return;
 475                         // Go one down from *this* header:
 476                         ParagraphList::iterator dest = next(finish, 1);
 477                         // Go further down to find header to insert in front of:
 478                         for (; dest != end; ++dest) {
 479                                 toclevel = buf.text().getTocLevel(distance(bgn, dest));
 480                                 if (toclevel != Layout::NOT_IN_TOC
 481                                       && toclevel <= thistoclevel)
 482                                         break;
 483                         }
 484                         // One such was found, so go on...
 485                         // If we move an environment downwards, make sure it is
 486                         // separated from its new neighbour above.
 487                         pit_type newpit = distance(bgn, dest);
 488                         buf.undo().recordUndo(cur, pit, newpit - 1);
 489                         // The paragraph before the target of movement
 490                         ParagraphList::iterator before = dest;
 491                         --before;
 492                         // Get the parent paragraph (outer in nested context)
 493                         pit_type const parent =
 494                                 before->params().depth() > current_depth
 495                                         ? text->depthHook(distance(bgn, before), current_depth)
 496                                         : distance(bgn, before);
 497                         // If a environment with same layout preceeds the moved one in the new
 498                         // position, and there is no separator yet, insert one.
 499                         if (start->layout().isEnvironment()
 500                             && pars[parent].layout() == start->layout()
 501                             && !before->isEnvSeparator(before->beginOfBody())) {
 502                                 cur.pit() = distance(bgn, before);
 503                                 cur.pos() = cur.lastpos();
 504                                 insertSeparator(cur, current_depth);
 505                                 cur.pit() = pit;
 506                         }
 507                         // Likewise, make sure moved environments are separated
 508                         // from their new neighbour below:
 509                         // If an environment of the same layout follows, and the moved
 510                         // paragraph sequence does not end with a separator, insert one.
 511                         ParagraphList::iterator lastmoved = finish;
 512                         --lastmoved;
 513                         if (dest != end
 514                             && start->layout().isEnvironment()
 515                             && dest->layout() == start->layout()
 516                             && !lastmoved->isEnvSeparator(lastmoved->beginOfBody())) {
 517                                 cur.pit() = distance(bgn, lastmoved);
 518                                 cur.pos() = cur.lastpos();
 519                                 insertSeparator(cur, current_depth);
 520                                 cur.pit() = pit;
 521                         }
 522                         newpit = distance(bgn, dest);
 523                         pit_type const len = distance(start, finish);
 524                         pars.splice(dest, start, finish);
 525                         cur.pit() = newpit - len;
 526                         break;
 527                 }
 528                 case OutlineIn:
 529                 case OutlineOut: {
 530                         pit_type const len = distance(start, finish);
 531                         buf.undo().recordUndo(cur, pit, pit + len - 1);
 532                         for (; start != finish; ++start) {
 533                                 toclevel = buf.text().getTocLevel(distance(bgn, start));
 534                                 if (toclevel == Layout::NOT_IN_TOC)
 535                                         continue;
 536
 537                                 DocumentClass const & tc = buf.params().documentClass();
 538                                 int const newtoclevel =
 539                                         (mode == OutlineIn ? toclevel + 1 : toclevel - 1);
 540                                 LabelType const oldlabeltype = start->layout().labeltype;
 541
 542                                 for (auto const & lay : tc) {
 543                                         if (lay.toclevel ==  newtoclevel &&
 544                                                  lay.labeltype == oldlabeltype) {
 545                                                 start->setLayout(lay);
 546                                                 break;
 547                                         }
 548                                 }
 549                         }
 550                         break;
 551                 }
 552         }
 553 }
 554
 555
 556 void Text::number(Cursor & cur)
 557 {
 558         FontInfo font = ignore_font;
 559         font.setNumber(FONT_TOGGLE);
 560         toggleAndShow(cur, this, Font(font, ignore_language));
 561 }
 562
 563
 564 bool Text::isRTL(pit_type const pit) const
 565 {
 566         Buffer const & buffer = owner_->buffer();
 567         return pars_[pit].isRTL(buffer.params());
 568 }
 569
 570
 571 namespace {
 572
 573 Language const * getLanguage(Cursor const & cur, string const & lang)
 574 {
 575         return lang.empty() ? cur.getFont().language() : languages.getLanguage(lang);
 576 }
 577
 578
 579 docstring resolveLayout(docstring layout, DocIterator const & dit)
 580 {
 581         Paragraph const & par = dit.paragraph();
 582         DocumentClass const & tclass = dit.buffer()->params().documentClass();
 583
 584         if (layout.empty())
 585                 layout = tclass.defaultLayoutName();
 586
 587         if (dit.inset().forcePlainLayout(dit.idx()))
 588                 // in this case only the empty layout is allowed
 589                 layout = tclass.plainLayoutName();
 590         else if (par.usePlainLayout()) {
 591                 // in this case, default layout maps to empty layout
 592                 if (layout == tclass.defaultLayoutName())
 593                         layout = tclass.plainLayoutName();
 594         } else {
 595                 // otherwise, the empty layout maps to the default
 596                 if (layout == tclass.plainLayoutName())
 597                         layout = tclass.defaultLayoutName();
 598         }
 599
 600         // If the entry is obsolete, use the new one instead.
 601         if (tclass.hasLayout(layout)) {
 602                 docstring const & obs = tclass[layout].obsoleted_by();
 603                 if (!obs.empty())
 604                         layout = obs;
 605         }
 606         if (!tclass.hasLayout(layout))
 607                 layout.clear();
 608         return layout;
 609 }
 610
 611
 612 bool isAlreadyLayout(docstring const & layout, CursorData const & cur)
 613 {
 614         ParagraphList const & pars = cur.text()->paragraphs();
 615
 616         pit_type pit = cur.selBegin().pit();
 617         pit_type const epit = cur.selEnd().pit() + 1;
 618         for ( ; pit != epit; ++pit)
 619                 if (pars[pit].layout().name() != layout)
 620                         return false;
 621
 622         return true;
 623 }
 624
 625
 626 } // namespace
 627
 628
 629 void Text::dispatch(Cursor & cur, FuncRequest & cmd)
 630 {
 631         LYXERR(Debug::ACTION, "Text::dispatch: cmd: " << cmd);
 632
 633         // Dispatch if the cursor is inside the text. It is not the
 634         // case for context menus (bug 5797).
 635         if (cur.text() != this) {
 636                 cur.undispatched();
 637                 return;
 638         }
 639
 640         BufferView * bv = &cur.bv();
 641         TextMetrics * tm = &bv->textMetrics(this);
 642         if (!tm->contains(cur.pit())) {
 643                 lyx::dispatch(FuncRequest(LFUN_SCREEN_SHOW_CURSOR));
 644                 tm = &bv->textMetrics(this);
 645         }
 646
 647         // FIXME: We use the update flag to indicates wether a singlePar or a
 648         // full screen update is needed. We reset it here but shall we restore it
 649         // at the end?
 650         cur.noScreenUpdate();
 651
 652         LBUFERR(this == cur.text());
 653
 654         // NOTE: This should NOT be a reference. See commit 94a5481a.
 655         CursorSlice const oldTopSlice = cur.top();
 656         bool const oldBoundary = cur.boundary();
 657         bool const oldSelection = cur.selection();
 658         // Signals that, even if needsUpdate == false, an update of the
 659         // cursor paragraph is required
 660         bool singleParUpdate = lyxaction.funcHasFlag(cmd.action(),
 661                 LyXAction::SingleParUpdate);
 662         // Signals that a full-screen update is required
 663         bool needsUpdate = !(lyxaction.funcHasFlag(cmd.action(),
 664                 LyXAction::NoUpdate) || singleParUpdate);
 665         bool const last_misspelled = lyxrc.spellcheck_continuously
 666                 && cur.paragraph().isMisspelled(cur.pos(), true);
 667
 668         FuncCode const act = cmd.action();
 669         switch (act) {
 670
 671         case LFUN_PARAGRAPH_MOVE_DOWN: {
 672                 pit_type const pit = cur.pit();
 673                 cur.recordUndo(pit, pit + 1);
 674                 pars_.swap(pit, pit + 1);
 675                 needsUpdate = true;
 676                 cur.forceBufferUpdate();
 677                 ++cur.pit();
 678                 break;
 679         }
 680
 681         case LFUN_PARAGRAPH_MOVE_UP: {
 682                 pit_type const pit = cur.pit();
 683                 cur.recordUndo(pit - 1, pit);
 684                 cur.finishUndo();
 685                 pars_.swap(pit, pit - 1);
 686                 --cur.pit();
 687                 needsUpdate = true;
 688                 cur.forceBufferUpdate();
 689                 break;
 690         }
 691
 692         case LFUN_APPENDIX: {
 693                 Paragraph & par = cur.paragraph();
 694                 bool start = !par.params().startOfAppendix();
 695
 696 // FIXME: The code below only makes sense at top level.
 697 // Should LFUN_APPENDIX be restricted to top-level paragraphs?
 698                 // ensure that we have only one start_of_appendix in this document
 699                 // FIXME: this don't work for multipart document!
 700                 for (pit_type tmp = 0, end = pars_.size(); tmp != end; ++tmp) {
 701                         if (pars_[tmp].params().startOfAppendix()) {
 702                                 cur.recordUndo(tmp, tmp);
 703                                 pars_[tmp].params().startOfAppendix(false);
 704                                 break;
 705                         }
 706                 }
 707
 708                 cur.recordUndo();
 709                 par.params().startOfAppendix(start);
 710
 711                 // we can set the refreshing parameters now
 712                 cur.forceBufferUpdate();
 713                 break;
 714         }
 715
 716         case LFUN_WORD_DELETE_FORWARD:
 717                 if (cur.selection())
 718                         cutSelection(cur, false);
 719                 else
 720                         deleteWordForward(cur, cmd.getArg(0) == "force");
 721                 finishChange(cur, false);
 722                 break;
 723
 724         case LFUN_WORD_DELETE_BACKWARD:
 725                 if (cur.selection())
 726                         cutSelection(cur, false);
 727                 else
 728                         deleteWordBackward(cur, cmd.getArg(0) == "force");
 729                 finishChange(cur, false);
 730                 break;
 731
 732         case LFUN_LINE_DELETE_FORWARD:
 733                 if (cur.selection())
 734                         cutSelection(cur, false);
 735                 else
 736                         tm->deleteLineForward(cur);
 737                 finishChange(cur, false);
 738                 break;
 739
 740         case LFUN_BUFFER_BEGIN:
 741         case LFUN_BUFFER_BEGIN_SELECT:
 742                 needsUpdate |= cur.selHandle(act == LFUN_BUFFER_BEGIN_SELECT);
 743                 if (cur.depth() == 1)
 744                         needsUpdate |= cursorTop(cur);
 745                 else
 746                         cur.undispatched();
 747                 cur.screenUpdateFlags(Update::FitCursor);
 748                 break;
 749
 750         case LFUN_BUFFER_END:
 751         case LFUN_BUFFER_END_SELECT:
 752                 needsUpdate |= cur.selHandle(act == LFUN_BUFFER_END_SELECT);
 753                 if (cur.depth() == 1)
 754                         needsUpdate |= cursorBottom(cur);
 755                 else
 756                         cur.undispatched();
 757                 cur.screenUpdateFlags(Update::FitCursor);
 758                 break;
 759
 760         case LFUN_INSET_BEGIN:
 761         case LFUN_INSET_BEGIN_SELECT:
 762                 needsUpdate |= cur.selHandle(act == LFUN_INSET_BEGIN_SELECT);
 763                 if (cur.depth() == 1 || !cur.top().at_begin())
 764                         needsUpdate |= cursorTop(cur);
 765                 else
 766                         cur.undispatched();
 767                 cur.screenUpdateFlags(Update::FitCursor);
 768                 break;
 769
 770         case LFUN_INSET_END:
 771         case LFUN_INSET_END_SELECT:
 772                 needsUpdate |= cur.selHandle(act == LFUN_INSET_END_SELECT);
 773                 if (cur.depth() == 1 || !cur.top().at_end())
 774                         needsUpdate |= cursorBottom(cur);
 775                 else
 776                         cur.undispatched();
 777                 cur.screenUpdateFlags(Update::FitCursor);
 778                 break;
 779
 780         case LFUN_CHAR_FORWARD:
 781         case LFUN_CHAR_FORWARD_SELECT: {
 782                 //LYXERR0(" LFUN_CHAR_FORWARD[SEL]:\n" << cur);
 783                 needsUpdate |= cur.selHandle(act == LFUN_CHAR_FORWARD_SELECT);
 784                 bool const cur_moved = cursorForward(cur);
 785                 needsUpdate |= cur_moved;
 786
 787                 if (!cur_moved && oldTopSlice == cur.top()
 788                                && cur.boundary() == oldBoundary) {
 789                         cur.undispatched();
 790                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 791
 792                         // we will probably be moving out the inset, so we should execute
 793                         // the depm-mechanism, but only when the cursor has a place to
 794                         // go outside this inset, i.e. in a slice above.
 795                         if (cur.depth() > 1 && cur.pos() == cur.lastpos()
 796                                   && cur.pit() == cur.lastpit()) {
 797                                 // The cursor hasn't changed yet. To give the
 798                                 // DEPM the possibility of doing something we must
 799                                 // provide it with two different cursors.
 800                                 Cursor dummy = cur;
 801                                 dummy.pos() = dummy.pit() = 0;
 802                                 if (cur.bv().checkDepm(dummy, cur))
 803                                         cur.forceBufferUpdate();
 804                         }
 805                 }
 806                 break;
 807         }
 808
 809         case LFUN_CHAR_BACKWARD:
 810         case LFUN_CHAR_BACKWARD_SELECT: {
 811                 //lyxerr << "handle LFUN_CHAR_BACKWARD[_SELECT]:\n" << cur << endl;
 812                 needsUpdate |= cur.selHandle(act == LFUN_CHAR_BACKWARD_SELECT);
 813                 bool const cur_moved = cursorBackward(cur);
 814                 needsUpdate |= cur_moved;
 815
 816                 if (!cur_moved && oldTopSlice == cur.top()
 817                                && cur.boundary() == oldBoundary) {
 818                         cur.undispatched();
 819                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
 820
 821                         // we will probably be moving out the inset, so we should execute
 822                         // the depm-mechanism, but only when the cursor has a place to
 823                         // go outside this inset, i.e. in a slice above.
 824                         if (cur.depth() > 1 && cur.pos() == 0 && cur.pit() == 0) {
 825                                 // The cursor hasn't changed yet. To give the
 826                                 // DEPM the possibility of doing something we must
 827                                 // provide it with two different cursors.
 828                                 Cursor dummy = cur;
 829                                 dummy.pos() = cur.lastpos();
 830                                 dummy.pit() = cur.lastpit();
 831                                 if (cur.bv().checkDepm(dummy, cur))
 832                                         cur.forceBufferUpdate();
 833                         }
 834                 }
 835                 break;
 836         }
 837
 838         case LFUN_CHAR_LEFT:
 839         case LFUN_CHAR_LEFT_SELECT:
 840                 if (lyxrc.visual_cursor) {
 841                         needsUpdate |= cur.selHandle(act == LFUN_CHAR_LEFT_SELECT);
 842                         bool const cur_moved = cursorVisLeft(cur);
 843                         needsUpdate |= cur_moved;
 844                         if (!cur_moved && oldTopSlice == cur.top()
 845                                        && cur.boundary() == oldBoundary) {
 846                                 cur.undispatched();
 847                                 cmd = FuncRequest(LFUN_FINISHED_LEFT);
 848                         }
 849                 } else {
 850                         if (cur.reverseDirectionNeeded()) {
 851                                 cmd.setAction(cmd.action() == LFUN_CHAR_LEFT_SELECT ?
 852                                         LFUN_CHAR_FORWARD_SELECT : LFUN_CHAR_FORWARD);
 853                         } else {
 854                                 cmd.setAction(cmd.action() == LFUN_CHAR_LEFT_SELECT ?
 855                                         LFUN_CHAR_BACKWARD_SELECT : LFUN_CHAR_BACKWARD);
 856                         }
 857                         dispatch(cur, cmd);
 858                         return;
 859                 }
 860                 break;
 861
 862         case LFUN_CHAR_RIGHT:
 863         case LFUN_CHAR_RIGHT_SELECT:
 864                 if (lyxrc.visual_cursor) {
 865                         needsUpdate |= cur.selHandle(cmd.action() == LFUN_CHAR_RIGHT_SELECT);
 866                         bool const cur_moved = cursorVisRight(cur);
 867                         needsUpdate |= cur_moved;
 868                         if (!cur_moved && oldTopSlice == cur.top()
 869                                        && cur.boundary() == oldBoundary) {
 870                                 cur.undispatched();
 871                                 cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 872                         }
 873                 } else {
 874                         if (cur.reverseDirectionNeeded()) {
 875                                 cmd.setAction(cmd.action() == LFUN_CHAR_RIGHT_SELECT ?
 876                                         LFUN_CHAR_BACKWARD_SELECT : LFUN_CHAR_BACKWARD);
 877                         } else {
 878                                 cmd.setAction(cmd.action() == LFUN_CHAR_RIGHT_SELECT ?
 879                                         LFUN_CHAR_FORWARD_SELECT : LFUN_CHAR_FORWARD);
 880                         }
 881                         dispatch(cur, cmd);
 882                         return;
 883                 }
 884                 break;
 885
 886
 887         case LFUN_UP_SELECT:
 888         case LFUN_DOWN_SELECT:
 889         case LFUN_UP:
 890         case LFUN_DOWN: {
 891                 // stop/start the selection
 892                 bool select = cmd.action() == LFUN_DOWN_SELECT ||
 893                         cmd.action() == LFUN_UP_SELECT;
 894
 895                 // move cursor up/down
 896                 bool up = cmd.action() == LFUN_UP_SELECT || cmd.action() == LFUN_UP;
 897                 bool const atFirstOrLastRow = cur.atFirstOrLastRow(up);
 898
 899                 if (!atFirstOrLastRow) {
 900                         needsUpdate |= cur.selHandle(select);
 901                         cur.upDownInText(up, needsUpdate);
 902                         needsUpdate |= cur.beforeDispatchCursor().inMathed();
 903                 } else {
 904                         pos_type newpos = up ? 0 : cur.lastpos();
 905                         if (lyxrc.mac_like_cursor_movement && cur.pos() != newpos) {
 906                                 needsUpdate |= cur.selHandle(select);
 907                                 // we do not reset the targetx of the cursor
 908                                 cur.pos() = newpos;
 909                                 needsUpdate |= bv->checkDepm(cur, bv->cursor());
 910                                 cur.updateTextTargetOffset();
 911                                 if (needsUpdate)
 912                                         cur.forceBufferUpdate();
 913                                 break;
 914                         }
 915
 916                         // if the cursor cannot be moved up or down do not remove
 917                         // the selection right now, but wait for the next dispatch.
 918                         if (select)
 919                                 needsUpdate |= cur.selHandle(select);
 920                         cur.upDownInText(up, needsUpdate);
 921                         cur.undispatched();
 922                 }
 923
 924                 break;
 925         }
 926
 927         case LFUN_PARAGRAPH_SELECT:
 928                 if (cur.pos() > 0)
 929                         needsUpdate |= setCursor(cur, cur.pit(), 0);
 930                 needsUpdate |= cur.selHandle(true);
 931                 if (cur.pos() < cur.lastpos())
 932                         needsUpdate |= setCursor(cur, cur.pit(), cur.lastpos());
 933                 break;
 934
 935         case LFUN_PARAGRAPH_UP:
 936         case LFUN_PARAGRAPH_UP_SELECT:
 937                 needsUpdate |= cur.selHandle(cmd.action() == LFUN_PARAGRAPH_UP_SELECT);
 938                 needsUpdate |= cursorUpParagraph(cur);
 939                 break;
 940
 941         case LFUN_PARAGRAPH_DOWN:
 942         case LFUN_PARAGRAPH_DOWN_SELECT:
 943                 needsUpdate |= cur.selHandle(cmd.action() == LFUN_PARAGRAPH_DOWN_SELECT);
 944                 needsUpdate |= cursorDownParagraph(cur);
 945                 break;
 946
 947         case LFUN_LINE_BEGIN:
 948         case LFUN_LINE_BEGIN_SELECT:
 949                 needsUpdate |= cur.selHandle(cmd.action() == LFUN_LINE_BEGIN_SELECT);
 950                 needsUpdate |= tm->cursorHome(cur);
 951                 break;
 952
 953         case LFUN_LINE_END:
 954         case LFUN_LINE_END_SELECT:
 955                 needsUpdate |= cur.selHandle(cmd.action() == LFUN_LINE_END_SELECT);
 956                 needsUpdate |= tm->cursorEnd(cur);
 957                 break;
 958
 959         case LFUN_SECTION_SELECT: {
 960                 Buffer const & buf = *cur.buffer();
 961                 pit_type const pit = cur.pit();
 962                 ParagraphList & pars = buf.text().paragraphs();
 963                 ParagraphList::iterator bgn = pars.begin();
 964                 // The first paragraph of the area to be selected:
 965                 ParagraphList::iterator start = lyx::next(bgn, pit);
 966                 // The final paragraph of area to be selected:
 967                 ParagraphList::iterator finish = start;
 968                 ParagraphList::iterator end = pars.end();
 969
 970                 int const thistoclevel = buf.text().getTocLevel(distance(bgn, start));
 971                 if (thistoclevel == Layout::NOT_IN_TOC)
 972                         break;
 973
 974                 cur.pos() = 0;
 975                 Cursor const old_cur = cur;
 976                 needsUpdate |= cur.selHandle(true);
 977
 978                 // Move out (down) from this section header
 979                 if (finish != end)
 980                         ++finish;
 981
 982                 // Seek the one (on same level) below
 983                 for (; finish != end; ++finish, ++cur.pit()) {
 984                         int const toclevel = buf.text().getTocLevel(distance(bgn, finish));
 985                         if (toclevel != Layout::NOT_IN_TOC && toclevel <= thistoclevel)
 986                                 break;
 987                 }
 988                 cur.pos() = cur.lastpos();
 989                 cur.boundary(false);
 990                 cur.setCurrentFont();
 991
 992                 needsUpdate |= cur != old_cur;
 993                 break;
 994         }
 995
 996         case LFUN_WORD_RIGHT:
 997         case LFUN_WORD_RIGHT_SELECT:
 998                 if (lyxrc.visual_cursor) {
 999                         needsUpdate |= cur.selHandle(cmd.action() == LFUN_WORD_RIGHT_SELECT);
1000                         bool const cur_moved = cursorVisRightOneWord(cur);
1001                         needsUpdate |= cur_moved;
1002                         if (!cur_moved && oldTopSlice == cur.top()
1003                                        && cur.boundary() == oldBoundary) {
1004                                 cur.undispatched();
1005                                 cmd = FuncRequest(LFUN_FINISHED_RIGHT);
1006                         }
1007                 } else {
1008                         if (cur.reverseDirectionNeeded()) {
1009                                 cmd.setAction(cmd.action() == LFUN_WORD_RIGHT_SELECT ?
1010                                                 LFUN_WORD_BACKWARD_SELECT : LFUN_WORD_BACKWARD);
1011                         } else {
1012                                 cmd.setAction(cmd.action() == LFUN_WORD_RIGHT_SELECT ?
1013                                                 LFUN_WORD_FORWARD_SELECT : LFUN_WORD_FORWARD);
1014                         }
1015                         dispatch(cur, cmd);
1016                         return;
1017                 }
1018                 break;
1019
1020         case LFUN_WORD_FORWARD:
1021         case LFUN_WORD_FORWARD_SELECT: {
1022                 needsUpdate |= cur.selHandle(cmd.action() == LFUN_WORD_FORWARD_SELECT);
1023                 bool const cur_moved = cursorForwardOneWord(cur);
1024                 needsUpdate |= cur_moved;
1025
1026                 if (!cur_moved && oldTopSlice == cur.top()
1027                                && cur.boundary() == oldBoundary) {
1028                         cur.undispatched();
1029                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1030
1031                         // we will probably be moving out the inset, so we should execute
1032                         // the depm-mechanism, but only when the cursor has a place to
1033                         // go outside this inset, i.e. in a slice above.
1034                         if (cur.depth() > 1 && cur.pos() == cur.lastpos()
1035                                   && cur.pit() == cur.lastpit()) {
1036                                 // The cursor hasn't changed yet. To give the
1037                                 // DEPM the possibility of doing something we must
1038                                 // provide it with two different cursors.
1039                                 Cursor dummy = cur;
1040                                 dummy.pos() = dummy.pit() = 0;
1041                                 if (cur.bv().checkDepm(dummy, cur))
1042                                         cur.forceBufferUpdate();
1043                         }
1044                 }
1045                 break;
1046         }
1047
1048         case LFUN_WORD_LEFT:
1049         case LFUN_WORD_LEFT_SELECT:
1050                 if (lyxrc.visual_cursor) {
1051                         needsUpdate |= cur.selHandle(cmd.action() == LFUN_WORD_LEFT_SELECT);
1052                         bool const cur_moved = cursorVisLeftOneWord(cur);
1053                         needsUpdate |= cur_moved;
1054                         if (!cur_moved && oldTopSlice == cur.top()
1055                                        && cur.boundary() == oldBoundary) {
1056                                 cur.undispatched();
1057                                 cmd = FuncRequest(LFUN_FINISHED_LEFT);
1058                         }
1059                 } else {
1060                         if (cur.reverseDirectionNeeded()) {
1061                                 cmd.setAction(cmd.action() == LFUN_WORD_LEFT_SELECT ?
1062                                                 LFUN_WORD_FORWARD_SELECT : LFUN_WORD_FORWARD);
1063                         } else {
1064                                 cmd.setAction(cmd.action() == LFUN_WORD_LEFT_SELECT ?
1065                                                 LFUN_WORD_BACKWARD_SELECT : LFUN_WORD_BACKWARD);
1066                         }
1067                         dispatch(cur, cmd);
1068                         return;
1069                 }
1070                 break;
1071
1072         case LFUN_WORD_BACKWARD:
1073         case LFUN_WORD_BACKWARD_SELECT: {
1074                 needsUpdate |= cur.selHandle(cmd.action() == LFUN_WORD_BACKWARD_SELECT);
1075                 bool const cur_moved = cursorBackwardOneWord(cur);
1076                 needsUpdate |= cur_moved;
1077
1078                 if (!cur_moved && oldTopSlice == cur.top()
1079                                && cur.boundary() == oldBoundary) {
1080                         cur.undispatched();
1081                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1082
1083                         // we will probably be moving out the inset, so we should execute
1084                         // the depm-mechanism, but only when the cursor has a place to
1085                         // go outside this inset, i.e. in a slice above.
1086                         if (cur.depth() > 1 && cur.pos() == 0
1087                                   && cur.pit() == 0) {
1088                                 // The cursor hasn't changed yet. To give the
1089                                 // DEPM the possibility of doing something we must
1090                                 // provide it with two different cursors.
1091                                 Cursor dummy = cur;
1092                                 dummy.pos() = cur.lastpos();
1093                                 dummy.pit() = cur.lastpit();
1094                                 if (cur.bv().checkDepm(dummy, cur))
1095                                         cur.forceBufferUpdate();
1096                         }
1097                 }
1098                 break;
1099         }
1100
1101         case LFUN_WORD_SELECT: {
1102                 selectWord(cur, WHOLE_WORD);
1103                 finishChange(cur, true);
1104                 break;
1105         }
1106
1107         case LFUN_NEWLINE_INSERT: {
1108                 InsetNewlineParams inp;
1109                 docstring arg = cmd.argument();
1110                 if (arg == "linebreak")
1111                         inp.kind = InsetNewlineParams::LINEBREAK;
1112                 else
1113                         inp.kind = InsetNewlineParams::NEWLINE;
1114                 cap::replaceSelection(cur);
1115                 cur.recordUndo();
1116                 cur.insert(new InsetNewline(inp));
1117                 cur.posForward();
1118                 moveCursor(cur, false);
1119                 break;
1120         }
1121
1122         case LFUN_TAB_INSERT: {
1123                 bool const multi_par_selection = cur.selection() &&
1124                         cur.selBegin().pit() != cur.selEnd().pit();
1125                 if (multi_par_selection) {
1126                         // If there is a multi-paragraph selection, a tab is inserted
1127                         // at the beginning of each paragraph.
1128                         cur.recordUndoSelection();
1129                         pit_type const pit_end = cur.selEnd().pit();
1130                         for (pit_type pit = cur.selBegin().pit(); pit <= pit_end; pit++) {
1131                                 pars_[pit].insertChar(0, '\t',
1132                                                       bv->buffer().params().track_changes);
1133                                 // Update the selection pos to make sure the selection does not
1134                                 // change as the inserted tab will increase the logical pos.
1135                                 if (cur.realAnchor().pit() == pit)
1136                                         cur.realAnchor().forwardPos();
1137                                 if (cur.pit() == pit)
1138                                         cur.forwardPos();
1139                         }
1140                         cur.finishUndo();
1141                 } else {
1142                         // Maybe we shouldn't allow tabs within a line, because they
1143                         // are not (yet) aligned as one might do expect.
1144                         FuncRequest ncmd(LFUN_SELF_INSERT, from_ascii("\t"));
1145                         dispatch(cur, ncmd);
1146                 }
1147                 break;
1148         }
1149
1150         case LFUN_TAB_DELETE: {
1151                 bool const tc = bv->buffer().params().track_changes;
1152                 if (cur.selection()) {
1153                         // If there is a selection, a tab (if present) is removed from
1154                         // the beginning of each paragraph.
1155                         cur.recordUndoSelection();
1156                         pit_type const pit_end = cur.selEnd().pit();
1157                         for (pit_type pit = cur.selBegin().pit(); pit <= pit_end; pit++) {
1158                                 Paragraph & par = paragraphs()[pit];
1159                                 if (par.empty())
1160                                         continue;
1161                                 char_type const c = par.getChar(0);
1162                                 if (c == '\t' || c == ' ') {
1163                                         // remove either 1 tab or 4 spaces.
1164                                         int const n = (c == ' ' ? 4 : 1);
1165                                         for (int i = 0; i < n
1166                                                   && !par.empty() && par.getChar(0) == c; ++i) {
1167                                                 if (cur.pit() == pit)
1168                                                         cur.posBackward();
1169                                                 if (cur.realAnchor().pit() == pit
1170                                                           && cur.realAnchor().pos() > 0 )
1171                                                         cur.realAnchor().backwardPos();
1172                                                 par.eraseChar(0, tc);
1173                                         }
1174                                 }
1175                         }
1176                         cur.finishUndo();
1177                 } else {
1178                         // If there is no selection, try to remove a tab or some spaces
1179                         // before the position of the cursor.
1180                         Paragraph & par = paragraphs()[cur.pit()];
1181                         pos_type const pos = cur.pos();
1182
1183                         if (pos == 0)
1184                                 break;
1185
1186                         char_type const c = par.getChar(pos - 1);
1187                         cur.recordUndo();
1188                         if (c == '\t') {
1189                                 cur.posBackward();
1190                                 par.eraseChar(cur.pos(), tc);
1191                         } else
1192                                 for (int n_spaces = 0;
1193                                      cur.pos() > 0
1194                                              && par.getChar(cur.pos() - 1) == ' '
1195                                              && n_spaces < 4;
1196                                      ++n_spaces) {
1197                                         cur.posBackward();
1198                                         par.eraseChar(cur.pos(), tc);
1199                                 }
1200                         cur.finishUndo();
1201                 }
1202                 break;
1203         }
1204
1205         case LFUN_CHAR_DELETE_FORWARD:
1206                 if (!cur.selection()) {
1207                         if (cur.pos() == cur.paragraph().size())
1208                                 // Par boundary, force full-screen update
1209                                 singleParUpdate = false;
1210                         else if (cmd.getArg(0) != "force" && cur.confirmDeletion()) {
1211                                 cur.resetAnchor();
1212                                 cur.selection(true);
1213                                 cur.posForward();
1214                                 cur.setSelection();
1215                                 break;
1216                         }
1217                         needsUpdate |= erase(cur);
1218                         cur.resetAnchor();
1219                 } else {
1220                         cutSelection(cur, false);
1221                         singleParUpdate = false;
1222                 }
1223                 moveCursor(cur, false);
1224                 break;
1225
1226         case LFUN_CHAR_DELETE_BACKWARD:
1227                 if (!cur.selection()) {
1228                         if (bv->getIntl().getTransManager().backspace()) {
1229                                 bool par_boundary = cur.pos() == 0;
1230                                 bool first_par = cur.pit() == 0;
1231                                 // Par boundary, full-screen update
1232                                 if (par_boundary)
1233                                         singleParUpdate = false;
1234                                 else if (cmd.getArg(0) != "force" && cur.confirmDeletion(true)) {
1235                                         cur.resetAnchor();
1236                                         cur.selection(true);
1237                                         cur.posBackward();
1238                                         cur.setSelection();
1239                                         break;
1240                                 }
1241                                 needsUpdate |= backspace(cur);
1242                                 cur.resetAnchor();
1243                                 if (par_boundary && !first_par && cur.pos() > 0
1244                                     && cur.paragraph().isEnvSeparator(cur.pos() - 1)) {
1245                                         needsUpdate |= backspace(cur);
1246                                         cur.resetAnchor();
1247                                 }
1248                         }
1249                 } else {
1250                         DocIterator const dit = cur.selectionBegin();
1251                         cutSelection(cur, false);
1252                         if (cur.buffer()->params().track_changes)
1253                                 // since we're doing backwards deletion,
1254                                 // and the selection is not really cut,
1255                                 // move cursor before selection (#11630)
1256                                 cur.setCursor(dit);
1257                         singleParUpdate = false;
1258                 }
1259                 break;
1260
1261         case LFUN_PARAGRAPH_BREAK: {
1262                 cap::replaceSelection(cur);
1263                 pit_type pit = cur.pit();
1264                 Paragraph const & par = pars_[pit];
1265                 bool lastpar = (pit == pit_type(pars_.size() - 1));
1266                 Paragraph const & nextpar = lastpar ? par : pars_[pit + 1];
1267                 pit_type prev = pit > 0 ? depthHook(pit, par.getDepth()) : pit;
1268                 if (prev < pit && cur.pos() == par.beginOfBody()
1269                     && !par.size() && !par.isEnvSeparator(cur.pos())
1270                     && !par.layout().keepempty
1271                     && !par.layout().isCommand()
1272                     && pars_[prev].layout() != par.layout()
1273                     && pars_[prev].layout().isEnvironment()
1274                     && !nextpar.isEnvSeparator(nextpar.beginOfBody())) {
1275                         if (par.layout().isEnvironment()
1276                             && pars_[prev].getDepth() == par.getDepth()) {
1277                                 docstring const layout = par.layout().name();
1278                                 DocumentClass const & tc = bv->buffer().params().documentClass();
1279                                 lyx::dispatch(FuncRequest(LFUN_LAYOUT, tc.plainLayout().name()));
1280                                 lyx::dispatch(FuncRequest(LFUN_SEPARATOR_INSERT, "plain"));
1281                                 lyx::dispatch(FuncRequest(LFUN_PARAGRAPH_BREAK, "inverse"));
1282                                 lyx::dispatch(FuncRequest(LFUN_LAYOUT, layout));
1283                         } else {
1284                                 lyx::dispatch(FuncRequest(LFUN_SEPARATOR_INSERT, "plain"));
1285                                 breakParagraph(cur);
1286                         }
1287                         Font const f(inherit_font, cur.current_font.language());
1288                         pars_[cur.pit() - 1].resetFonts(f);
1289                 } else {
1290                         if (par.isEnvSeparator(cur.pos()) && cmd.getArg(1) != "ignoresep")
1291                                 cur.posForward();
1292                         breakParagraph(cur, cmd.getArg(0) == "inverse");
1293                 }
1294                 cur.resetAnchor();
1295                 // If we have a list and autoinsert item insets,
1296                 // insert them now.
1297                 Layout::LaTeXArgMap args = par.layout().args();
1298                 for (auto const & thearg : args) {
1299                         Layout::latexarg arg = thearg.second;
1300                         if (arg.autoinsert && prefixIs(thearg.first, "item:")) {
1301                                 FuncRequest cmd2(LFUN_ARGUMENT_INSERT, thearg.first);
1302                                 lyx::dispatch(cmd2);
1303                         }
1304                 }
1305                 break;
1306         }
1307
1308         case LFUN_INSET_INSERT: {
1309                 cur.recordUndo();
1310
1311                 // We have to avoid triggering InstantPreview loading
1312                 // before inserting into the document. See bug #5626.
1313                 bool loaded = bv->buffer().isFullyLoaded();
1314                 bv->buffer().setFullyLoaded(false);
1315                 Inset * inset = createInset(&bv->buffer(), cmd);
1316                 bv->buffer().setFullyLoaded(loaded);
1317
1318                 if (inset) {
1319                         // FIXME (Abdel 01/02/2006):
1320                         // What follows would be a partial fix for bug 2154:
1321                         //   http://www.lyx.org/trac/ticket/2154
1322                         // This automatically put the label inset _after_ a
1323                         // numbered section. It should be possible to extend the mechanism
1324                         // to any kind of LateX environement.
1325                         // The correct way to fix that bug would be at LateX generation.
1326                         // I'll let the code here for reference as it could be used for some
1327                         // other feature like "automatic labelling".
1328                         /*
1329                         Paragraph & par = pars_[cur.pit()];
1330                         if (inset->lyxCode() == LABEL_CODE
1331                                 && !par.layout().counter.empty()) {
1332                                 // Go to the end of the paragraph
1333                                 // Warning: Because of Change-Tracking, the last
1334                                 // position is 'size()' and not 'size()-1':
1335                                 cur.pos() = par.size();
1336                                 // Insert a new paragraph
1337                                 FuncRequest fr(LFUN_PARAGRAPH_BREAK);
1338                                 dispatch(cur, fr);
1339                         }
1340                         */
1341                         if (cur.selection())
1342                                 cutSelection(cur, false);
1343                         cur.insert(inset);
1344                         cur.forceBufferUpdate();
1345                         if (inset->editable() && inset->asInsetText())
1346                                 inset->edit(cur, true);
1347                         else
1348                                 cur.posForward();
1349
1350                         // trigger InstantPreview now
1351                         if (inset->lyxCode() == EXTERNAL_CODE) {
1352                                 InsetExternal & ins =
1353                                         static_cast<InsetExternal &>(*inset);
1354                                 ins.updatePreview();
1355                         }
1356                 }
1357
1358                 break;
1359         }
1360
1361         case LFUN_INSET_DISSOLVE: {
1362                 if (dissolveInset(cur)) {
1363                         needsUpdate = true;
1364                         cur.forceBufferUpdate();
1365                 }
1366                 break;
1367         }
1368
1369         case LFUN_GRAPHICS_SET_GROUP: {
1370                 InsetGraphics * ins = graphics::getCurrentGraphicsInset(cur);
1371                 if (!ins)
1372                         break;
1373
1374                 cur.recordUndo();
1375
1376                 string id = to_utf8(cmd.argument());
1377                 string grp = graphics::getGroupParams(bv->buffer(), id);
1378                 InsetGraphicsParams tmp, inspar = ins->getParams();
1379
1380                 if (id.empty())
1381                         inspar.groupId = to_utf8(cmd.argument());
1382                 else {
1383                         InsetGraphics::string2params(grp, bv->buffer(), tmp);
1384                         tmp.filename = inspar.filename;
1385                         inspar = tmp;
1386                 }
1387
1388                 ins->setParams(inspar);
1389                 break;
1390         }
1391
1392         case LFUN_SPACE_INSERT:
1393                 if (cur.paragraph().layout().free_spacing)
1394                         insertChar(cur, ' ');
1395                 else {
1396                         doInsertInset(cur, this, cmd, false, false);
1397                         cur.posForward();
1398                 }
1399                 moveCursor(cur, false);
1400                 break;
1401
1402         case LFUN_SPECIALCHAR_INSERT: {
1403                 string const name = to_utf8(cmd.argument());
1404                 if (name == "hyphenation")
1405                         specialChar(cur, InsetSpecialChar::HYPHENATION);
1406                 else if (name == "allowbreak")
1407                         specialChar(cur, InsetSpecialChar::ALLOWBREAK);
1408                 else if (name == "ligature-break")
1409                         specialChar(cur, InsetSpecialChar::LIGATURE_BREAK);
1410                 else if (name == "slash")
1411                         specialChar(cur, InsetSpecialChar::SLASH);
1412                 else if (name == "nobreakdash")
1413                         specialChar(cur, InsetSpecialChar::NOBREAKDASH);
1414                 else if (name == "dots")
1415                         specialChar(cur, InsetSpecialChar::LDOTS);
1416                 else if (name == "end-of-sentence")
1417                         specialChar(cur, InsetSpecialChar::END_OF_SENTENCE);
1418                 else if (name == "menu-separator")
1419                         specialChar(cur, InsetSpecialChar::MENU_SEPARATOR);
1420                 else if (name == "lyx")
1421                         specialChar(cur, InsetSpecialChar::PHRASE_LYX);
1422                 else if (name == "tex")
1423                         specialChar(cur, InsetSpecialChar::PHRASE_TEX);
1424                 else if (name == "latex")
1425                         specialChar(cur, InsetSpecialChar::PHRASE_LATEX);
1426                 else if (name == "latex2e")
1427                         specialChar(cur, InsetSpecialChar::PHRASE_LATEX2E);
1428                 else if (name.empty())
1429                         lyxerr << "LyX function 'specialchar-insert' needs an argument." << endl;
1430                 else
1431                         lyxerr << "Wrong argument for LyX function 'specialchar-insert'." << endl;
1432                 break;
1433         }
1434
1435         case LFUN_IPAMACRO_INSERT: {
1436                 string const arg = cmd.getArg(0);
1437                 if (arg == "deco") {
1438                         // Open the inset, and move the current selection
1439                         // inside it.
1440                         doInsertInset(cur, this, cmd, true, true);
1441                         cur.posForward();
1442                         // Some insets are numbered, others are shown in the outline pane so
1443                         // let's update the labels and the toc backend.
1444                         cur.forceBufferUpdate();
1445                         break;
1446                 }
1447                 if (arg == "tone-falling")
1448                         ipaChar(cur, InsetIPAChar::TONE_FALLING);
1449                 else if (arg == "tone-rising")
1450                         ipaChar(cur, InsetIPAChar::TONE_RISING);
1451                 else if (arg == "tone-high-rising")
1452                         ipaChar(cur, InsetIPAChar::TONE_HIGH_RISING);
1453                 else if (arg == "tone-low-rising")
1454                         ipaChar(cur, InsetIPAChar::TONE_LOW_RISING);
1455                 else if (arg == "tone-high-rising-falling")
1456                         ipaChar(cur, InsetIPAChar::TONE_HIGH_RISING_FALLING);
1457                 else if (arg.empty())
1458                         lyxerr << "LyX function 'ipamacro-insert' needs an argument." << endl;
1459                 else
1460                         lyxerr << "Wrong argument for LyX function 'ipamacro-insert'." << endl;
1461                 break;
1462         }
1463
1464         case LFUN_WORD_UPCASE:
1465                 changeCase(cur, text_uppercase, cmd.getArg(0) == "partial");
1466                 break;
1467
1468         case LFUN_WORD_LOWCASE:
1469                 changeCase(cur, text_lowercase, cmd.getArg(0) == "partial");
1470                 break;
1471
1472         case LFUN_WORD_CAPITALIZE:
1473                 changeCase(cur, text_capitalization, cmd.getArg(0) == "partial");
1474                 break;
1475
1476         case LFUN_CHARS_TRANSPOSE:
1477                 charsTranspose(cur);
1478                 break;
1479
1480         case LFUN_PASTE: {
1481                 cur.message(_("Paste"));
1482                 LASSERT(cur.selBegin().idx() == cur.selEnd().idx(), break);
1483                 cap::replaceSelection(cur);
1484
1485                 // without argument?
1486                 string const arg = to_utf8(cmd.argument());
1487                 if (arg.empty()) {
1488                         bool tryGraphics = true;
1489                         if (theClipboard().isInternal())
1490                                 pasteFromStack(cur, bv->buffer().errorList("Paste"), 0);
1491                         else if (theClipboard().hasTextContents()) {
1492                                 if (pasteClipboardText(cur, bv->buffer().errorList("Paste"),
1493                                                        true, Clipboard::AnyTextType))
1494                                         tryGraphics = false;
1495                         }
1496                         if (tryGraphics && theClipboard().hasGraphicsContents())
1497                                 pasteClipboardGraphics(cur, bv->buffer().errorList("Paste"));
1498                 } else if (isStrUnsignedInt(arg)) {
1499                         // we have a numerical argument
1500                         pasteFromStack(cur, bv->buffer().errorList("Paste"),
1501                                        convert<unsigned int>(arg));
1502                 } else if (arg == "html" || arg == "latex") {
1503                         Clipboard::TextType type = (arg == "html") ?
1504                                 Clipboard::HtmlTextType : Clipboard::LaTeXTextType;
1505                         pasteClipboardText(cur, bv->buffer().errorList("Paste"), true, type);
1506                 } else {
1507                         Clipboard::GraphicsType type = Clipboard::AnyGraphicsType;
1508                         if (arg == "pdf")
1509                                 type = Clipboard::PdfGraphicsType;
1510                         else if (arg == "png")
1511                                 type = Clipboard::PngGraphicsType;
1512                         else if (arg == "jpeg")
1513                                 type = Clipboard::JpegGraphicsType;
1514                         else if (arg == "linkback")
1515                                 type = Clipboard::LinkBackGraphicsType;
1516                         else if (arg == "emf")
1517                                 type = Clipboard::EmfGraphicsType;
1518                         else if (arg == "wmf")
1519                                 type = Clipboard::WmfGraphicsType;
1520                         else
1521                                 // we also check in getStatus()
1522                                 LYXERR0("Unrecognized graphics type: " << arg);
1523
1524                         pasteClipboardGraphics(cur, bv->buffer().errorList("Paste"), type);
1525                 }
1526
1527                 bv->buffer().errors("Paste");
1528                 bv->buffer().updatePreviews(); // bug 11619
1529                 cur.clearSelection(); // bug 393
1530                 cur.finishUndo();
1531                 break;
1532         }
1533
1534         case LFUN_CUT:
1535                 cutSelection(cur, true);
1536                 cur.message(_("Cut"));
1537                 break;
1538
1539         case LFUN_COPY:
1540                 copySelection(cur);
1541                 cur.message(_("Copy"));
1542                 break;
1543
1544         case LFUN_SERVER_GET_XY:
1545                 cur.message(from_utf8(
1546                         convert<string>(tm->cursorX(cur.top(), cur.boundary()))
1547                         + ' ' + convert<string>(tm->cursorY(cur.top(), cur.boundary()))));
1548                 break;
1549
1550         case LFUN_SERVER_SET_XY: {
1551                 int x = 0;
1552                 int y = 0;
1553                 istringstream is(to_utf8(cmd.argument()));
1554                 is >> x >> y;
1555                 if (!is)
1556                         lyxerr << "SETXY: Could not parse coordinates in '"
1557                                << to_utf8(cmd.argument()) << endl;
1558                 else
1559                         tm->setCursorFromCoordinates(cur, x, y);
1560                 break;
1561         }
1562
1563         case LFUN_SERVER_GET_LAYOUT:
1564                 cur.message(cur.paragraph().layout().name());
1565                 break;
1566
1567         case LFUN_LAYOUT:
1568         case LFUN_LAYOUT_TOGGLE: {
1569                 bool const ignoreautonests = cmd.getArg(1) == "ignoreautonests";
1570                 docstring req_layout = ignoreautonests ? from_utf8(cmd.getArg(0)) : cmd.argument();
1571                 LYXERR(Debug::INFO, "LFUN_LAYOUT: (arg) " << to_utf8(req_layout));
1572
1573                 docstring layout = resolveLayout(req_layout, cur);
1574                 if (layout.empty()) {
1575                         cur.errorMessage(from_utf8(N_("Layout ")) + req_layout +
1576                                 from_utf8(N_(" not known")));
1577                         break;
1578                 }
1579
1580                 docstring const old_layout = cur.paragraph().layout().name();
1581                 bool change_layout = !isAlreadyLayout(layout, cur);
1582
1583                 if (cmd.action() == LFUN_LAYOUT_TOGGLE && !change_layout) {
1584                         change_layout = true;
1585                         layout = resolveLayout(docstring(), cur);
1586                 }
1587
1588                 if (change_layout) {
1589                         setLayout(cur, layout);
1590                         if (cur.pit() > 0 && !ignoreautonests) {
1591                                 set<docstring> const & autonests =
1592                                                 pars_[cur.pit() - 1].layout().autonests();
1593                                 set<docstring> const & autonested =
1594                                                 pars_[cur.pit()].layout().isAutonestedBy();
1595                                 if (autonests.find(layout) != autonests.end()
1596                                                 || autonested.find(old_layout) != autonested.end())
1597                                         lyx::dispatch(FuncRequest(LFUN_DEPTH_INCREMENT));
1598                         }
1599                 }
1600
1601                 DocumentClass const & tclass = bv->buffer().params().documentClass();
1602                 bool inautoarg = false;
1603                 for (auto const & la_pair : tclass[layout].args()) {
1604                         Layout::latexarg const & arg = la_pair.second;
1605                         if (arg.autoinsert) {
1606                                 // If we had already inserted an arg automatically,
1607                                 // leave this now in order to insert the next one.
1608                                 if (inautoarg) {
1609                                         cur.leaveInset(cur.inset());
1610                                         cur.posForward();
1611                                 }
1612                                 FuncRequest const cmd2(LFUN_ARGUMENT_INSERT, la_pair.first);
1613                                 lyx::dispatch(cmd2);
1614                                 inautoarg = true;
1615                         }
1616                 }
1617
1618                 break;
1619         }
1620
1621         case LFUN_ENVIRONMENT_SPLIT: {
1622                 bool const outer = cmd.argument() == "outer";
1623                 bool const previous = cmd.argument() == "previous";
1624                 bool const before = cmd.argument() == "before";
1625                 bool const normal = cmd.argument().empty();
1626                 Paragraph const & para = cur.paragraph();
1627                 docstring layout;
1628                 if (para.layout().isEnvironment())
1629                         layout = para.layout().name();
1630                 depth_type split_depth = cur.paragraph().params().depth();
1631                 depth_type nextpar_depth = 0;
1632                 if (outer || previous) {
1633                         // check if we have an environment in our scope
1634                         pit_type pit = cur.pit();
1635                         Paragraph cpar = pars_[pit];
1636                         while (true) {
1637                                 if (pit == 0)
1638                                         break;
1639                                 --pit;
1640                                 cpar = pars_[pit];
1641                                 if (layout.empty() && previous
1642                                     && cpar.layout().isEnvironment()
1643                                     && cpar.params().depth() <= split_depth)
1644                                         layout = cpar.layout().name();
1645                                 if (cpar.params().depth() < split_depth
1646                                     && cpar.layout().isEnvironment()) {
1647                                                 if (!previous)
1648                                                         layout = cpar.layout().name();
1649                                                 split_depth = cpar.params().depth();
1650                                 }
1651                                 if (cpar.params().depth() == 0)
1652                                         break;
1653                         }
1654                 }
1655                 if ((outer || normal) && cur.pit() < cur.lastpit()) {
1656                         // save nesting of following paragraph
1657                         Paragraph cpar = pars_[cur.pit() + 1];
1658                         nextpar_depth = cpar.params().depth();
1659                 }
1660                 if (before)
1661                         cur.top().setPitPos(cur.pit(), 0);
1662                 if (before || cur.pos() > 0)
1663                         lyx::dispatch(FuncRequest(LFUN_PARAGRAPH_BREAK));
1664                 else if (previous && cur.nextInset() && cur.nextInset()->lyxCode() == SEPARATOR_CODE)
1665                         lyx::dispatch(FuncRequest(LFUN_PARAGRAPH_BREAK, "inverse ignoresep"));
1666                 if (outer) {
1667                         while (cur.paragraph().params().depth() > split_depth)
1668                                 lyx::dispatch(FuncRequest(LFUN_DEPTH_DECREMENT));
1669                 }
1670                 DocumentClass const & tc = bv->buffer().params().documentClass();
1671                 lyx::dispatch(FuncRequest(LFUN_LAYOUT, from_ascii("\"") + tc.plainLayout().name()
1672                                           + from_ascii("\" ignoreautonests")));
1673                 // FIXME: Bibitem mess!
1674                 if (cur.prevInset() && cur.prevInset()->lyxCode() == BIBITEM_CODE)
1675                         lyx::dispatch(FuncRequest(LFUN_CHAR_DELETE_BACKWARD));
1676                 lyx::dispatch(FuncRequest(LFUN_SEPARATOR_INSERT, "plain"));
1677                 if (before) {
1678                         cur.backwardPos();
1679                         lyx::dispatch(FuncRequest(LFUN_PARAGRAPH_BREAK, "inverse ignoresep"));
1680                         while (cur.paragraph().params().depth() < split_depth)
1681                                 lyx::dispatch(FuncRequest(LFUN_DEPTH_INCREMENT));
1682                 }
1683                 else
1684                         lyx::dispatch(FuncRequest(LFUN_PARAGRAPH_BREAK, "inverse"));
1685                 lyx::dispatch(FuncRequest(LFUN_LAYOUT, layout));
1686                 if ((outer || normal) && nextpar_depth > 0) {
1687                         // restore nesting of following paragraph
1688                         DocIterator scur = cur;
1689                         depth_type const max_depth = cur.paragraph().params().depth() + 1;
1690                         cur.forwardPar();
1691                         while (cur.paragraph().params().depth() < min(nextpar_depth, max_depth)) {
1692                                 depth_type const olddepth = cur.paragraph().params().depth();
1693                                 lyx::dispatch(FuncRequest(LFUN_DEPTH_INCREMENT));
1694                                 if (olddepth == cur.paragraph().params().depth())
1695                                         // leave loop if no incrementation happens
1696                                         break;
1697                         }
1698                         cur.setCursor(scur);
1699                 }
1700
1701                 break;
1702         }
1703
1704         case LFUN_CLIPBOARD_PASTE:
1705                 cap::replaceSelection(cur);
1706                 pasteClipboardText(cur, bv->buffer().errorList("Paste"),
1707                                cmd.argument() == "paragraph");
1708                 bv->buffer().errors("Paste");
1709                 break;
1710
1711         case LFUN_CLIPBOARD_PASTE_SIMPLE:
1712                 cap::replaceSelection(cur);
1713                 pasteSimpleText(cur, cmd.argument() == "paragraph");
1714                 break;
1715
1716         case LFUN_PRIMARY_SELECTION_PASTE:
1717                 cap::replaceSelection(cur);
1718                 pasteString(cur, theSelection().get(),
1719                             cmd.argument() == "paragraph");
1720                 break;
1721
1722         case LFUN_SELECTION_PASTE:
1723                 // Copy the selection buffer to the clipboard stack,
1724                 // because we want it to appear in the "Edit->Paste
1725                 // recent" menu.
1726                 cap::replaceSelection(cur);
1727                 cap::copySelectionToStack();
1728                 cap::pasteSelection(bv->cursor(), bv->buffer().errorList("Paste"));
1729                 bv->buffer().errors("Paste");
1730                 break;
1731
1732         case LFUN_QUOTE_INSERT: {
1733                 cap::replaceSelection(cur);
1734                 cur.recordUndo();
1735
1736                 Paragraph const & par = cur.paragraph();
1737                 pos_type pos = cur.pos();
1738                 // Ignore deleted text before cursor
1739                 while (pos > 0 && par.isDeleted(pos - 1))
1740                         --pos;
1741
1742                 bool const inner = (cmd.getArg(0) == "single" || cmd.getArg(0) == "inner");
1743
1744                 // Guess quote side.
1745                 // A space triggers an opening quote. This is passed if the preceding
1746                 // char/inset is a space or at paragraph start.
1747                 char_type c = ' ';
1748                 if (pos > 0 && !par.isSpace(pos - 1)) {
1749                         if (cur.prevInset() && cur.prevInset()->lyxCode() == QUOTE_CODE) {
1750                                 // If an opening double quotation mark precedes, and this
1751                                 // is a single quote, make it opening as well
1752                                 InsetQuotes & ins =
1753                                         static_cast<InsetQuotes &>(*cur.prevInset());
1754                                 string const type = ins.getType();
1755                                 if (!suffixIs(type, "ld") || !inner)
1756                                         c = par.getChar(pos - 1);
1757                         }
1758                         else if (!cur.prevInset()
1759                             || (cur.prevInset() && cur.prevInset()->isChar()))
1760                                 // If a char precedes, pass that and let InsetQuote decide
1761                                 c = par.getChar(pos - 1);
1762                         else {
1763                                 while (pos > 0) {
1764                                         if (par.getInset(pos - 1)
1765                                             && !par.getInset(pos - 1)->isPartOfTextSequence()) {
1766                                                 // skip "invisible" insets
1767                                                 --pos;
1768                                                 continue;
1769                                         }
1770                                         c = par.getChar(pos - 1);
1771                                         break;
1772                                 }
1773                         }
1774                 }
1775                 InsetQuotesParams::QuoteLevel const quote_level = inner
1776                                 ? InsetQuotesParams::SecondaryQuotes : InsetQuotesParams::PrimaryQuotes;
1777                 cur.insert(new InsetQuotes(cur.buffer(), c, quote_level, cmd.getArg(1), cmd.getArg(2)));
1778                 cur.buffer()->updateBuffer();
1779                 cur.posForward();
1780                 break;
1781         }
1782
1783         case LFUN_MOUSE_TRIPLE:
1784                 if (cmd.button() == mouse_button::button1) {
1785                         if (cur.pos() > 0)
1786                                 setCursor(cur, cur.pit(), 0);
1787                         bv->cursor() = cur;
1788                         cur.resetAnchor();
1789                         if (cur.pos() < cur.lastpos())
1790                                 setCursor(cur, cur.pit(), cur.lastpos());
1791                         cur.setSelection();
1792                         bv->cursor() = cur;
1793                 }
1794                 break;
1795
1796         case LFUN_MOUSE_DOUBLE:
1797                 if (cmd.button() == mouse_button::button1) {
1798                         selectWord(cur, WHOLE_WORD);
1799                         bv->cursor() = cur;
1800                 }
1801                 break;
1802
1803         // Single-click on work area
1804         case LFUN_MOUSE_PRESS: {
1805                 // We are not marking a selection with the keyboard in any case.
1806                 Cursor & bvcur = cur.bv().cursor();
1807                 bvcur.setMark(false);
1808                 switch (cmd.button()) {
1809                 case mouse_button::button1:
1810                         if (!bvcur.selection())
1811                                 // Set the cursor
1812                                 bvcur.resetAnchor();
1813                         if (!bv->mouseSetCursor(cur, cmd.modifier() == ShiftModifier))
1814                                 cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1815                         if (bvcur.wordSelection())
1816                                 selectWord(bvcur, WHOLE_WORD);
1817                         break;
1818
1819                 case mouse_button::button2:
1820                         if (lyxrc.mouse_middlebutton_paste) {
1821                                 // Middle mouse pasting.
1822                                 bv->mouseSetCursor(cur);
1823                                 lyx::dispatch(
1824                                         FuncRequest(LFUN_COMMAND_ALTERNATIVES,
1825                                                     "selection-paste ; primary-selection-paste paragraph"));
1826                         }
1827                         cur.noScreenUpdate();
1828                         break;
1829
1830                 case mouse_button::button3: {
1831                         // Don't do anything if we right-click a
1832                         // selection, a context menu will popup.
1833                         if (bvcur.selection() && cur >= bvcur.selectionBegin()
1834                             && cur < bvcur.selectionEnd()) {
1835                                 cur.noScreenUpdate();
1836                                 return;
1837                         }
1838                         if (!bv->mouseSetCursor(cur, false))
1839                                 cur.screenUpdateFlags(Update::FitCursor);
1840                         break;
1841                 }
1842
1843                 default:
1844                         break;
1845                 } // switch (cmd.button())
1846                 break;
1847         }
1848         case LFUN_MOUSE_MOTION: {
1849                 // Mouse motion with right or middle mouse do nothing for now.
1850                 if (cmd.button() != mouse_button::button1) {
1851                         cur.noScreenUpdate();
1852                         return;
1853                 }
1854                 // ignore motions deeper nested than the real anchor
1855                 Cursor & bvcur = cur.bv().cursor();
1856                 if (!bvcur.realAnchor().hasPart(cur)) {
1857                         cur.undispatched();
1858                         break;
1859                 }
1860                 CursorSlice old = bvcur.top();
1861
1862                 int const wh = bv->workHeight();
1863                 int const y = max(0, min(wh - 1, cmd.y()));
1864
1865                 tm->setCursorFromCoordinates(cur, cmd.x(), y);
1866                 cur.setTargetX(cmd.x());
1867                 // Don't allow selecting a separator inset
1868                 if (cur.pos() && cur.paragraph().isEnvSeparator(cur.pos() - 1))
1869                         cur.posBackward();
1870                 if (cmd.y() >= wh)
1871                         lyx::dispatch(FuncRequest(LFUN_DOWN_SELECT));
1872                 else if (cmd.y() < 0)
1873                         lyx::dispatch(FuncRequest(LFUN_UP_SELECT));
1874                 // This is to allow jumping over large insets
1875                 if (cur.top() == old) {
1876                         if (cmd.y() >= wh)
1877                                 lyx::dispatch(FuncRequest(LFUN_DOWN_SELECT));
1878                         else if (cmd.y() < 0)
1879                                 lyx::dispatch(FuncRequest(LFUN_UP_SELECT));
1880                 }
1881                 // We continue with our existing selection or start a new one, so don't
1882                 // reset the anchor.
1883                 bvcur.setCursor(cur);
1884                 bvcur.selection(true);
1885                 bvcur.setCurrentFont();
1886                 if (cur.top() == old) {
1887                         // We didn't move one iota, so no need to update the screen.
1888                         cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1889                         //cur.noScreenUpdate();
1890                         return;
1891                 }
1892                 break;
1893         }
1894
1895         case LFUN_MOUSE_RELEASE:
1896                 switch (cmd.button()) {
1897                 case mouse_button::button1:
1898                         // Cursor was set at LFUN_MOUSE_PRESS or LFUN_MOUSE_MOTION time.
1899                         // If there is a new selection, update persistent selection;
1900                         // otherwise, single click does not clear persistent selection
1901                         // buffer.
1902                         if (cur.selection()) {
1903                                 // Finish selection. If double click,
1904                                 // cur is moved to the end of word by
1905                                 // selectWord but bvcur is current
1906                                 // mouse position.
1907                                 cur.bv().cursor().setSelection();
1908                                 // We might have removed an empty but drawn selection
1909                                 // (probably a margin)
1910                                 cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1911                         } else
1912                                 cur.noScreenUpdate();
1913                         // FIXME: We could try to handle drag and drop of selection here.
1914                         return;
1915
1916                 case mouse_button::button2:
1917                         // Middle mouse pasting is handled at mouse press time,
1918                         // see LFUN_MOUSE_PRESS.
1919                         cur.noScreenUpdate();
1920                         return;
1921
1922                 case mouse_button::button3:
1923                         // Cursor was set at LFUN_MOUSE_PRESS time.
1924                         // FIXME: If there is a selection we could try to handle a special
1925                         // drag & drop context menu.
1926                         cur.noScreenUpdate();
1927                         return;
1928
1929                 case mouse_button::none:
1930                 case mouse_button::button4:
1931                 case mouse_button::button5:
1932                         break;
1933                 } // switch (cmd.button())
1934
1935                 break;
1936
1937         case LFUN_SELF_INSERT: {
1938                 if (cmd.argument().empty())
1939                         break;
1940
1941                 // Automatically delete the currently selected
1942                 // text and replace it with what is being
1943                 // typed in now. Depends on lyxrc settings
1944                 // "auto_region_delete", which defaults to
1945                 // true (on).
1946
1947                 if (lyxrc.auto_region_delete && cur.selection())
1948                         cutSelection(cur, false);
1949                 cur.clearSelection();
1950
1951                 for (char_type c : cmd.argument())
1952                         bv->translateAndInsert(c, this, cur);
1953
1954                 cur.resetAnchor();
1955                 moveCursor(cur, false);
1956                 cur.markNewWordPosition();
1957                 bv->bookmarkEditPosition();
1958                 break;
1959         }
1960
1961         case LFUN_HREF_INSERT: {
1962                 docstring content = cmd.argument();
1963                 if (content.empty() && cur.selection())
1964                         content = cur.selectionAsString(false);
1965
1966                 InsetCommandParams p(HYPERLINK_CODE);
1967                 if (!content.empty()){
1968                         // if it looks like a link, we'll put it as target,
1969                         // otherwise as name (bug #8792).
1970
1971                         // We can't do:
1972                         //   regex_match(to_utf8(content), matches, link_re)
1973                         // because smatch stores pointers to the substrings rather
1974                         // than making copies of them. And those pointers become
1975                         // invalid after regex_match returns, since it is then
1976                         // being given a temporary object. (Thanks to Georg for
1977                         // figuring that out.)
1978                         regex const link_re("^([a-z]+):.*");
1979                         smatch matches;
1980                         string const c = to_utf8(lowercase(content));
1981
1982                         if (c.substr(0,7) == "mailto:") {
1983                                 p["target"] = content;
1984                                 p["type"] = from_ascii("mailto:");
1985                         } else if (regex_match(c, matches, link_re)) {
1986                                 p["target"] = content;
1987                                 string protocol = matches.str(1);
1988                                 if (protocol == "file")
1989                                         p["type"] = from_ascii("file:");
1990                         } else
1991                                 p["name"] = content;
1992                 }
1993                 string const data = InsetCommand::params2string(p);
1994
1995                 // we need to have a target. if we already have one, then
1996                 // that gets used at the default for the name, too, which
1997                 // is probably what is wanted.
1998                 if (p["target"].empty()) {
1999                         bv->showDialog("href", data);
2000                 } else {
2001                         FuncRequest fr(LFUN_INSET_INSERT, data);
2002                         dispatch(cur, fr);
2003                 }
2004                 break;
2005         }
2006
2007         case LFUN_LABEL_INSERT: {
2008                 InsetCommandParams p(LABEL_CODE);
2009                 // Try to generate a valid label
2010                 p["name"] = (cmd.argument().empty()) ?
2011                         cur.getPossibleLabel() :
2012                         cmd.argument();
2013                 string const data = InsetCommand::params2string(p);
2014
2015                 if (cmd.argument().empty()) {
2016                         bv->showDialog("label", data);
2017                 } else {
2018                         FuncRequest fr(LFUN_INSET_INSERT, data);
2019                         dispatch(cur, fr);
2020                 }
2021                 break;
2022         }
2023
2024         case LFUN_INFO_INSERT: {
2025                 if (cmd.argument().empty()) {
2026                         bv->showDialog("info", cur.current_font.language()->lang());
2027                 } else {
2028                         Inset * inset;
2029                         inset = createInset(cur.buffer(), cmd);
2030                         if (!inset)
2031                                 break;
2032                         cur.recordUndo();
2033                         insertInset(cur, inset);
2034                         cur.forceBufferUpdate();
2035                         cur.posForward();
2036                 }
2037                 break;
2038         }
2039         case LFUN_CAPTION_INSERT:
2040         case LFUN_FOOTNOTE_INSERT:
2041         case LFUN_NOTE_INSERT:
2042         case LFUN_BOX_INSERT:
2043         case LFUN_BRANCH_INSERT:
2044         case LFUN_PHANTOM_INSERT:
2045         case LFUN_ERT_INSERT:
2046         case LFUN_LISTING_INSERT:
2047         case LFUN_MARGINALNOTE_INSERT:
2048         case LFUN_ARGUMENT_INSERT:
2049         case LFUN_INDEX_INSERT:
2050         case LFUN_PREVIEW_INSERT:
2051         case LFUN_SCRIPT_INSERT:
2052         case LFUN_IPA_INSERT:
2053                 // Open the inset, and move the current selection
2054                 // inside it.
2055                 doInsertInset(cur, this, cmd, true, true);
2056                 cur.posForward();
2057                 if (act == LFUN_SCRIPT_INSERT) {
2058                         /* Script insets change the font style in metrics(), and
2059                          * this is used to compute the height of the caret
2060                          * (because the font is stored in TextMetrics::font_).
2061                          * When we insert, we have to make sure that metrics are
2062                          * computed so that the caret height is wrong. Arguably,
2063                          * this is hackish.*/
2064                         bv->processUpdateFlags(Update::SinglePar);
2065                 }
2066                 cur.setCurrentFont();
2067                 // Some insets are numbered, others are shown in the outline pane so
2068                 // let's update the labels and the toc backend.
2069                 cur.forceBufferUpdate();
2070                 break;
2071
2072         case LFUN_FLEX_INSERT: {
2073                 // Open the inset, and move the current selection
2074                 // inside it.
2075                 bool const sel = cur.selection();
2076                 doInsertInset(cur, this, cmd, true, true);
2077                 // Insert auto-insert arguments
2078                 bool autoargs = false, inautoarg = false;
2079                 Layout::LaTeXArgMap args = cur.inset().getLayout().args();
2080                 for (auto const & argt : args) {
2081                         Layout::latexarg arg = argt.second;
2082                         if (!inautoarg && arg.insertonnewline && cur.pos() > 0) {
2083                                 FuncRequest cmd2(LFUN_PARAGRAPH_BREAK);
2084                                 lyx::dispatch(cmd2);
2085                         }
2086                         if (arg.autoinsert) {
2087                                 // The cursor might have been invalidated by the replaceSelection.
2088                                 cur.buffer()->changed(true);
2089                                 // If we had already inserted an arg automatically,
2090                                 // leave this now in order to insert the next one.
2091                                 if (inautoarg) {
2092                                         cur.leaveInset(cur.inset());
2093                                         cur.posForward();
2094                                         if (arg.insertonnewline && cur.pos() > 0) {
2095                                                 FuncRequest cmd2(LFUN_PARAGRAPH_BREAK);
2096                                                 lyx::dispatch(cmd2);
2097                                         }
2098                                 }
2099                                 FuncRequest cmd2(LFUN_ARGUMENT_INSERT, argt.first);
2100                                 lyx::dispatch(cmd2);
2101                                 autoargs = true;
2102                                 inautoarg = true;
2103                         }
2104                 }
2105                 if (!autoargs) {
2106                         if (sel)
2107                                 cur.leaveInset(cur.inset());
2108                         cur.posForward();
2109                 }
2110                 // Some insets are numbered, others are shown in the outline pane so
2111                 // let's update the labels and the toc backend.
2112                 cur.forceBufferUpdate();
2113                 break;
2114         }
2115
2116         case LFUN_TABULAR_INSERT: {
2117                 // if there were no arguments, just open the dialog
2118                 if (cmd.argument().empty()) {
2119                         bv->showDialog("tabularcreate");
2120                         break;
2121                 } else if (cur.buffer()->masterParams().tablestyle != "default"
2122                            || bv->buffer().params().documentClass().tablestyle() != "default") {
2123                         string tabstyle = cur.buffer()->masterParams().tablestyle;
2124                         if (tabstyle == "default")
2125                                 tabstyle = bv->buffer().params().documentClass().tablestyle();
2126                         if (!libFileSearch("tabletemplates", tabstyle + ".lyx").empty()) {
2127                                 FuncRequest fr(LFUN_TABULAR_STYLE_INSERT,
2128                                                tabstyle + " " + to_ascii(cmd.argument()));
2129                                 lyx::dispatch(fr);
2130                                 break;
2131                         } else
2132                                 // Unknown style. Report and fall back to default.
2133                                 cur.errorMessage(from_utf8(N_("Table Style ")) + from_utf8(tabstyle) +
2134                                                      from_utf8(N_(" not known")));
2135
2136                 }
2137                 if (doInsertInset(cur, this, cmd, false, true))
2138                         cur.posForward();
2139                 break;
2140         }
2141
2142         case LFUN_TABULAR_STYLE_INSERT: {
2143                 string const style = cmd.getArg(0);
2144                 string const rows = cmd.getArg(1);
2145                 string const cols = cmd.getArg(2);
2146                 if (cols.empty() || !isStrInt(cols)
2147                     || rows.empty() || !isStrInt(rows))
2148                         break;
2149                 int const r = convert<int>(rows);
2150                 int const c = convert<int>(cols);
2151
2152                 string suffix;
2153                 if (r == 1)
2154                         suffix = "_1x1";
2155                 else if (r == 2)
2156                         suffix = "_1x2";
2157                 FileName const tabstyle = libFileSearch("tabletemplates",
2158                                                         style + suffix + ".lyx", "lyx");
2159                 if (tabstyle.empty())
2160                             break;
2161                 UndoGroupHelper ugh(cur.buffer());
2162                 cur.recordUndo();
2163                 FuncRequest cmd2(LFUN_FILE_INSERT, tabstyle.absFileName() + " ignorelang");
2164                 lyx::dispatch(cmd2);
2165                 // go into table
2166                 cur.backwardPos();
2167                 if (r > 2) {
2168                         // move one cell up to middle cell
2169                         cur.up();
2170                         // add the missing rows
2171                         int const addrows = r - 3;
2172                         for (int i = 0 ; i < addrows ; ++i) {
2173                                 FuncRequest fr(LFUN_TABULAR_FEATURE, "append-row");
2174                                 lyx::dispatch(fr);
2175                         }
2176                 }
2177                 // add the missing columns
2178                 int const addcols = c - 1;
2179                 for (int i = 0 ; i < addcols ; ++i) {
2180                         FuncRequest fr(LFUN_TABULAR_FEATURE, "append-column");
2181                         lyx::dispatch(fr);
2182                 }
2183                 if (r > 1)
2184                         // go to first cell
2185                         cur.up();
2186                 break;
2187         }
2188
2189         case LFUN_FLOAT_INSERT:
2190         case LFUN_FLOAT_WIDE_INSERT:
2191         case LFUN_WRAP_INSERT: {
2192                 // will some content be moved into the inset?
2193                 bool const content = cur.selection();
2194                 // does the content consist of multiple paragraphs?
2195                 bool const singlepar = (cur.selBegin().pit() == cur.selEnd().pit());
2196
2197                 doInsertInset(cur, this, cmd, true, true);
2198                 cur.posForward();
2199
2200                 // If some single-par content is moved into the inset,
2201                 // doInsertInset puts the cursor outside the inset.
2202                 // To insert the caption we put it back into the inset.
2203                 // FIXME cleanup doInsertInset to avoid such dances!
2204                 if (content && singlepar)
2205                         cur.backwardPos();
2206
2207                 ParagraphList & pars = cur.text()->paragraphs();
2208
2209                 DocumentClass const & tclass = bv->buffer().params().documentClass();
2210
2211                 // add a separate paragraph for the caption inset
2212                 pars.push_back(Paragraph());
2213                 pars.back().setInsetOwner(&cur.text()->inset());
2214                 pars.back().setPlainOrDefaultLayout(tclass);
2215                 int cap_pit = pars.size() - 1;
2216
2217                 // if an empty inset was created, we create an additional empty
2218                 // paragraph at the bottom so that the user can choose where to put
2219                 // the graphics (or table).
2220                 if (!content) {
2221                         pars.push_back(Paragraph());
2222                         pars.back().setInsetOwner(&cur.text()->inset());
2223                         pars.back().setPlainOrDefaultLayout(tclass);
2224                 }
2225
2226                 // reposition the cursor to the caption
2227                 cur.pit() = cap_pit;
2228                 cur.pos() = 0;
2229                 // FIXME: This Text/Cursor dispatch handling is a mess!
2230                 // We cannot use Cursor::dispatch here it needs access to up to
2231                 // date metrics.
2232                 FuncRequest cmd_caption(LFUN_CAPTION_INSERT);
2233                 doInsertInset(cur, cur.text(), cmd_caption, true, false);
2234                 cur.forceBufferUpdate();
2235                 cur.screenUpdateFlags(Update::Force);
2236                 // FIXME: When leaving the Float (or Wrap) inset we should
2237                 // delete any empty paragraph left above or below the
2238                 // caption.
2239                 break;
2240         }
2241
2242         case LFUN_NOMENCL_INSERT: {
2243                 InsetCommandParams p(NOMENCL_CODE);
2244                 if (cmd.argument().empty()) {
2245                         p["symbol"] =
2246                                 bv->cursor().innerText()->getStringForDialog(bv->cursor());
2247                         cur.clearSelection();
2248                 } else
2249                         p["symbol"] = cmd.argument();
2250                 string const data = InsetCommand::params2string(p);
2251                 bv->showDialog("nomenclature", data);
2252                 break;
2253         }
2254
2255         case LFUN_INDEX_PRINT: {
2256                 InsetCommandParams p(INDEX_PRINT_CODE);
2257                 if (cmd.argument().empty())
2258                         p["type"] = from_ascii("idx");
2259                 else
2260                         p["type"] = cmd.argument();
2261                 string const data = InsetCommand::params2string(p);
2262                 FuncRequest fr(LFUN_INSET_INSERT, data);
2263                 dispatch(cur, fr);
2264                 break;
2265         }
2266
2267         case LFUN_NOMENCL_PRINT:
2268         case LFUN_NEWPAGE_INSERT:
2269                 // do nothing fancy
2270                 doInsertInset(cur, this, cmd, false, false);
2271                 cur.posForward();
2272                 break;
2273
2274         case LFUN_SEPARATOR_INSERT: {
2275                 doInsertInset(cur, this, cmd, false, false);
2276                 cur.posForward();
2277                 // remove a following space
2278                 Paragraph & par = cur.paragraph();
2279                 if (cur.pos() != cur.lastpos() && par.isLineSeparator(cur.pos()))
2280                     par.eraseChar(cur.pos(), cur.buffer()->params().track_changes);
2281                 break;
2282         }
2283
2284         case LFUN_DEPTH_DECREMENT:
2285                 changeDepth(cur, DEC_DEPTH);
2286                 break;
2287
2288         case LFUN_DEPTH_INCREMENT:
2289                 changeDepth(cur, INC_DEPTH);
2290                 break;
2291
2292         case LFUN_REGEXP_MODE:
2293                 regexpDispatch(cur, cmd);
2294                 break;
2295
2296         case LFUN_MATH_MODE: {
2297                 if (cmd.argument() == "on" || cmd.argument() == "") {
2298                         // don't pass "on" as argument
2299                         // (it would appear literally in the first cell)
2300                         docstring sel = cur.selectionAsString(false);
2301                         InsetMathMacroTemplate * macro = new InsetMathMacroTemplate(cur.buffer());
2302                         // create a macro template if we see "\\newcommand" somewhere, and
2303                         // an ordinary formula otherwise
2304                         if (!sel.empty()
2305                                 && (sel.find(from_ascii("\\newcommand")) != string::npos
2306                                         || sel.find(from_ascii("\\newlyxcommand")) != string::npos
2307                                         || sel.find(from_ascii("\\def")) != string::npos)
2308                                 && macro->fromString(sel)) {
2309                                 cur.recordUndo();
2310                                 replaceSelection(cur);
2311                                 cur.insert(macro);
2312                         } else {
2313                                 // no meaningful macro template was found
2314                                 delete macro;
2315                                 mathDispatch(cur,FuncRequest(LFUN_MATH_MODE));
2316                         }
2317                 } else
2318                         // The argument is meaningful
2319                         // We replace cmd with LFUN_MATH_INSERT because LFUN_MATH_MODE
2320                         // has a different meaning in math mode
2321                         mathDispatch(cur, FuncRequest(LFUN_MATH_INSERT,cmd.argument()));
2322                 break;
2323         }
2324
2325         case LFUN_MATH_MACRO:
2326                 if (cmd.argument().empty())
2327                         cur.errorMessage(from_utf8(N_("Missing argument")));
2328                 else {
2329                         cur.recordUndo();
2330                         string s = to_utf8(cmd.argument());
2331                         string const s1 = token(s, ' ', 1);
2332                         int const nargs = s1.empty() ? 0 : convert<int>(s1);
2333                         string const s2 = token(s, ' ', 2);
2334                         MacroType type = MacroTypeNewcommand;
2335                         if (s2 == "def")
2336                                 type = MacroTypeDef;
2337                         InsetMathMacroTemplate * inset = new InsetMathMacroTemplate(cur.buffer(),
2338                                 from_utf8(token(s, ' ', 0)), nargs, false, type);
2339                         inset->setBuffer(bv->buffer());
2340                         insertInset(cur, inset);
2341
2342                         // enter macro inset and select the name
2343                         cur.push(*inset);
2344                         cur.top().pos() = cur.top().lastpos();
2345                         cur.resetAnchor();
2346                         cur.selection(true);
2347                         cur.top().pos() = 0;
2348                 }
2349                 break;
2350
2351         case LFUN_MATH_DISPLAY:
2352         case LFUN_MATH_SUBSCRIPT:
2353         case LFUN_MATH_SUPERSCRIPT:
2354         case LFUN_MATH_INSERT:
2355         case LFUN_MATH_AMS_MATRIX:
2356         case LFUN_MATH_MATRIX:
2357         case LFUN_MATH_DELIM:
2358         case LFUN_MATH_BIGDELIM:
2359                 mathDispatch(cur, cmd);
2360                 break;
2361
2362         case LFUN_FONT_EMPH: {
2363                 Font font(ignore_font, ignore_language);
2364                 font.fontInfo().setEmph(FONT_TOGGLE);
2365                 toggleAndShow(cur, this, font);
2366                 break;
2367         }
2368
2369         case LFUN_FONT_ITAL: {
2370                 Font font(ignore_font, ignore_language);
2371                 font.fontInfo().setShape(ITALIC_SHAPE);
2372                 toggleAndShow(cur, this, font);
2373                 break;
2374         }
2375
2376         case LFUN_FONT_BOLD:
2377         case LFUN_FONT_BOLDSYMBOL: {
2378                 Font font(ignore_font, ignore_language);
2379                 font.fontInfo().setSeries(BOLD_SERIES);
2380                 toggleAndShow(cur, this, font);
2381                 break;
2382         }
2383
2384         case LFUN_FONT_NOUN: {
2385                 Font font(ignore_font, ignore_language);
2386                 font.fontInfo().setNoun(FONT_TOGGLE);
2387                 toggleAndShow(cur, this, font);
2388                 break;
2389         }
2390
2391         case LFUN_FONT_TYPEWRITER: {
2392                 Font font(ignore_font, ignore_language);
2393                 font.fontInfo().setFamily(TYPEWRITER_FAMILY); // no good
2394                 toggleAndShow(cur, this, font);
2395                 break;
2396         }
2397
2398         case LFUN_FONT_SANS: {
2399                 Font font(ignore_font, ignore_language);
2400                 font.fontInfo().setFamily(SANS_FAMILY);
2401                 toggleAndShow(cur, this, font);
2402                 break;
2403         }
2404
2405         case LFUN_FONT_ROMAN: {
2406                 Font font(ignore_font, ignore_language);
2407                 font.fontInfo().setFamily(ROMAN_FAMILY);
2408                 toggleAndShow(cur, this, font);
2409                 break;
2410         }
2411
2412         case LFUN_FONT_DEFAULT: {
2413                 Font font(inherit_font, ignore_language);
2414                 toggleAndShow(cur, this, font);
2415                 break;
2416         }
2417
2418         case LFUN_FONT_STRIKEOUT: {
2419                 Font font(ignore_font, ignore_language);
2420                 font.fontInfo().setStrikeout(FONT_TOGGLE);
2421                 toggleAndShow(cur, this, font);
2422                 break;
2423         }
2424
2425         case LFUN_FONT_CROSSOUT: {
2426                 Font font(ignore_font, ignore_language);
2427                 font.fontInfo().setXout(FONT_TOGGLE);
2428                 toggleAndShow(cur, this, font);
2429                 break;
2430         }
2431
2432         case LFUN_FONT_UNDERUNDERLINE: {
2433                 Font font(ignore_font, ignore_language);
2434                 font.fontInfo().setUuline(FONT_TOGGLE);
2435                 toggleAndShow(cur, this, font);
2436                 break;
2437         }
2438
2439         case LFUN_FONT_UNDERWAVE: {
2440                 Font font(ignore_font, ignore_language);
2441                 font.fontInfo().setUwave(FONT_TOGGLE);
2442                 toggleAndShow(cur, this, font);
2443                 break;
2444         }
2445
2446         case LFUN_FONT_UNDERLINE: {
2447                 Font font(ignore_font, ignore_language);
2448                 font.fontInfo().setUnderbar(FONT_TOGGLE);
2449                 toggleAndShow(cur, this, font);
2450                 break;
2451         }
2452
2453         case LFUN_FONT_SIZE: {
2454                 Font font(ignore_font, ignore_language);
2455                 setLyXSize(to_utf8(cmd.argument()), font.fontInfo());
2456                 toggleAndShow(cur, this, font);
2457                 break;
2458         }
2459
2460         case LFUN_LANGUAGE: {
2461                 string const lang_arg = cmd.getArg(0);
2462                 bool const reset = (lang_arg.empty() || lang_arg == "reset");
2463                 Language const * lang =
2464                         reset ? reset_language
2465                               : languages.getLanguage(lang_arg);
2466                 // we allow reset_language, which is 0, but only if it
2467                 // was requested via empty or "reset" arg.
2468                 if (!lang && !reset)
2469                         break;
2470                 bool const toggle = (cmd.getArg(1) != "set");
2471                 selectWordWhenUnderCursor(cur, WHOLE_WORD_STRICT);
2472                 Font font(ignore_font, lang);
2473                 toggleAndShow(cur, this, font, toggle);
2474                 // We need a buffer update if we change the language
2475                 // of an info inset
2476                 if (cur.insetInSelection(INFO_CODE))
2477                         cur.forceBufferUpdate();
2478                 break;
2479         }
2480
2481         case LFUN_TEXTSTYLE_APPLY: {
2482                 unsigned int num = 0;
2483                 string const arg = to_utf8(cmd.argument());
2484                 // Argument?
2485                 if (!arg.empty()) {
2486                         if (isStrUnsignedInt(arg)) {
2487                                 num = convert<uint>(arg);
2488                                 if (num >= freeFonts.size()) {
2489                                         cur.message(_("Invalid argument (number exceeds stack size)!"));
2490                                         break;
2491                                 }
2492                         } else {
2493                                 cur.message(_("Invalid argument (must be a non-negative number)!"));
2494                                 break;
2495                         }
2496                 }
2497                 toggleAndShow(cur, this, freeFonts[num].second, toggleall);
2498                 cur.message(bformat(_("Text properties applied: %1$s"), freeFonts[num].first));
2499                 break;
2500         }
2501
2502         // Set the freefont using the contents of \param data dispatched from
2503         // the frontends and apply it at the current cursor location.
2504         case LFUN_TEXTSTYLE_UPDATE: {
2505                 Font font(ignore_font, ignore_language);
2506                 bool toggle;
2507                 if (font.fromString(to_utf8(cmd.argument()), toggle)) {
2508                         docstring const props = font.stateText(&bv->buffer().params(), true);
2509                         freeFonts.push(make_pair(props, font));
2510                         toggleall = toggle;
2511                         toggleAndShow(cur, this, font, toggleall);
2512                         // We need a buffer update if we change the language
2513                         // of an info inset
2514                         if (cur.insetInSelection(INFO_CODE))
2515                                 cur.forceBufferUpdate();
2516                         cur.message(bformat(_("Text properties applied: %1$s"), props));
2517                 } else
2518                         LYXERR0("Invalid argument of textstyle-update");
2519                 break;
2520         }
2521
2522         case LFUN_FINISHED_LEFT:
2523                 LYXERR(Debug::DEBUG, "handle LFUN_FINISHED_LEFT:\n" << cur);
2524                 // We're leaving an inset, going left. If the inset is LTR, we're
2525                 // leaving from the front, so we should not move (remain at --- but
2526                 // not in --- the inset). If the inset is RTL, move left, without
2527                 // entering the inset itself; i.e., move to after the inset.
2528                 if (cur.paragraph().getFontSettings(
2529                                 cur.bv().buffer().params(), cur.pos()).isRightToLeft())
2530                         cursorVisLeft(cur, true);
2531                 break;
2532
2533         case LFUN_FINISHED_RIGHT:
2534                 LYXERR(Debug::DEBUG, "handle LFUN_FINISHED_RIGHT:\n" << cur);
2535                 // We're leaving an inset, going right. If the inset is RTL, we're
2536                 // leaving from the front, so we should not move (remain at --- but
2537                 // not in --- the inset). If the inset is LTR, move right, without
2538                 // entering the inset itself; i.e., move to after the inset.
2539                 if (!cur.paragraph().getFontSettings(
2540                                 cur.bv().buffer().params(), cur.pos()).isRightToLeft())
2541                         cursorVisRight(cur, true);
2542                 break;
2543
2544         case LFUN_FINISHED_BACKWARD:
2545                 LYXERR(Debug::DEBUG, "handle LFUN_FINISHED_BACKWARD:\n" << cur);
2546                 cur.setCurrentFont();
2547                 break;
2548
2549         case LFUN_FINISHED_FORWARD:
2550                 LYXERR(Debug::DEBUG, "handle LFUN_FINISHED_FORWARD:\n" << cur);
2551                 ++cur.pos();
2552                 cur.setCurrentFont();
2553                 break;
2554
2555         case LFUN_LAYOUT_PARAGRAPH: {
2556                 string data;
2557                 params2string(cur.paragraph(), data);
2558                 data = "show\n" + data;
2559                 bv->showDialog("paragraph", data);
2560                 break;
2561         }
2562
2563         case LFUN_PARAGRAPH_UPDATE: {
2564                 string data;
2565                 params2string(cur.paragraph(), data);
2566
2567                 // Will the paragraph accept changes from the dialog?
2568                 bool const accept =
2569                         cur.inset().allowParagraphCustomization(cur.idx());
2570
2571                 data = "update " + convert<string>(accept) + '\n' + data;
2572                 bv->updateDialog("paragraph", data);
2573                 break;
2574         }
2575
2576         case LFUN_ACCENT_UMLAUT:
2577         case LFUN_ACCENT_CIRCUMFLEX:
2578         case LFUN_ACCENT_GRAVE:
2579         case LFUN_ACCENT_ACUTE:
2580         case LFUN_ACCENT_TILDE:
2581         case LFUN_ACCENT_PERISPOMENI:
2582         case LFUN_ACCENT_CEDILLA:
2583         case LFUN_ACCENT_MACRON:
2584         case LFUN_ACCENT_DOT:
2585         case LFUN_ACCENT_UNDERDOT:
2586         case LFUN_ACCENT_UNDERBAR:
2587         case LFUN_ACCENT_CARON:
2588         case LFUN_ACCENT_BREVE:
2589         case LFUN_ACCENT_TIE:
2590         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
2591         case LFUN_ACCENT_CIRCLE:
2592         case LFUN_ACCENT_OGONEK:
2593                 theApp()->handleKeyFunc(cmd.action());
2594                 if (!cmd.argument().empty())
2595                         // FIXME: Are all these characters encoded in one byte in utf8?
2596                         bv->translateAndInsert(cmd.argument()[0], this, cur);
2597                 cur.screenUpdateFlags(Update::FitCursor);
2598                 break;
2599
2600         case LFUN_FLOAT_LIST_INSERT: {
2601                 DocumentClass const & tclass = bv->buffer().params().documentClass();
2602                 if (tclass.floats().typeExist(to_utf8(cmd.argument()))) {
2603                         cur.recordUndo();
2604                         if (cur.selection())
2605                                 cutSelection(cur, false);
2606                         breakParagraph(cur);
2607
2608                         if (cur.lastpos() != 0) {
2609                                 cursorBackward(cur);
2610                                 breakParagraph(cur);
2611                         }
2612
2613                         docstring const laystr = cur.inset().usePlainLayout() ?
2614                                 tclass.plainLayoutName() :
2615                                 tclass.defaultLayoutName();
2616                         setLayout(cur, laystr);
2617                         ParagraphParameters p;
2618                         // FIXME If this call were replaced with one to clearParagraphParams(),
2619                         // then we could get rid of this method altogether.
2620                         setParagraphs(cur, p);
2621                         // FIXME This should be simplified when InsetFloatList takes a
2622                         // Buffer in its constructor.
2623                         InsetFloatList * ifl = new InsetFloatList(cur.buffer(), to_utf8(cmd.argument()));
2624                         ifl->setBuffer(bv->buffer());
2625                         insertInset(cur, ifl);
2626                         cur.posForward();
2627                 } else {
2628                         lyxerr << "Non-existent float type: "
2629                                << to_utf8(cmd.argument()) << endl;
2630                 }
2631                 break;
2632         }
2633
2634         case LFUN_CHANGE_ACCEPT: {
2635                 acceptOrRejectChanges(cur, ACCEPT);
2636                 break;
2637         }
2638
2639         case LFUN_CHANGE_REJECT: {
2640                 acceptOrRejectChanges(cur, REJECT);
2641                 break;
2642         }
2643
2644         case LFUN_THESAURUS_ENTRY: {
2645                 Language const * language = cur.getFont().language();
2646                 docstring arg = cmd.argument();
2647                 if (arg.empty()) {
2648                         arg = cur.selectionAsString(false);
2649                         // FIXME
2650                         if (arg.size() > 100 || arg.empty()) {
2651                                 // Get word or selection
2652                                 selectWordWhenUnderCursor(cur, WHOLE_WORD);
2653                                 arg = cur.selectionAsString(false);
2654                                 arg += " lang=" + from_ascii(language->lang());
2655                         }
2656                 } else {
2657                         string lang = cmd.getArg(1);
2658                         // This duplicates the code in GuiThesaurus::initialiseParams
2659                         if (prefixIs(lang, "lang=")) {
2660                                 language = languages.getLanguage(lang.substr(5));
2661                                 if (!language)
2662                                         language = cur.getFont().language();
2663                         }
2664                 }
2665                 string lang = language->code();
2666                 if (lyxrc.thesaurusdir_path.empty() && !thesaurus.thesaurusInstalled(from_ascii(lang))) {
2667                         LYXERR(Debug::ACTION, "Command " << cmd << ". Thesaurus not found for language " << lang);
2668                         frontend::Alert::warning(_("Path to thesaurus directory not set!"),
2669                                         _("The path to the thesaurus directory has not been specified.\n"
2670                                           "The thesaurus is not functional.\n"
2671                                           "Please refer to sec. 6.15.1 of the User's Guide for setup\n"
2672                                           "instructions."));
2673                 }
2674                 bv->showDialog("thesaurus", to_utf8(arg));
2675                 break;
2676         }
2677
2678         case LFUN_SPELLING_ADD: {
2679                 Language const * language = getLanguage(cur, cmd.getArg(1));
2680                 docstring word = from_utf8(cmd.getArg(0));
2681                 if (word.empty()) {
2682                         word = cur.selectionAsString(false);
2683                         // FIXME
2684                         if (word.size() > 100 || word.empty()) {
2685                                 // Get word or selection
2686                                 selectWordWhenUnderCursor(cur, WHOLE_WORD);
2687                                 word = cur.selectionAsString(false);
2688                         }
2689                 }
2690                 WordLangTuple wl(word, language);
2691                 theSpellChecker()->insert(wl);
2692                 break;
2693         }
2694
2695         case LFUN_SPELLING_IGNORE: {
2696                 Language const * language = getLanguage(cur, cmd.getArg(1));
2697                 docstring word = from_utf8(cmd.getArg(0));
2698                 if (word.empty()) {
2699                         word = cur.selectionAsString(false);
2700                         // FIXME
2701                         if (word.size() > 100 || word.empty()) {
2702                                 // Get word or selection
2703                                 selectWordWhenUnderCursor(cur, WHOLE_WORD);
2704                                 word = cur.selectionAsString(false);
2705                         }
2706                 }
2707                 WordLangTuple wl(word, language);
2708                 theSpellChecker()->accept(wl);
2709                 break;
2710         }
2711
2712         case LFUN_SPELLING_REMOVE: {
2713                 Language const * language = getLanguage(cur, cmd.getArg(1));
2714                 docstring word = from_utf8(cmd.getArg(0));
2715                 if (word.empty()) {
2716                         word = cur.selectionAsString(false);
2717                         // FIXME
2718                         if (word.size() > 100 || word.empty()) {
2719                                 // Get word or selection
2720                                 selectWordWhenUnderCursor(cur, WHOLE_WORD);
2721                                 word = cur.selectionAsString(false);
2722                         }
2723                 }
2724                 WordLangTuple wl(word, language);
2725                 theSpellChecker()->remove(wl);
2726                 break;
2727         }
2728
2729         case LFUN_PARAGRAPH_PARAMS_APPLY: {
2730                 // Given data, an encoding of the ParagraphParameters
2731                 // generated in the Paragraph dialog, this function sets
2732                 // the current paragraph, or currently selected paragraphs,
2733                 // appropriately.
2734                 // NOTE: This function overrides all existing settings.
2735                 setParagraphs(cur, cmd.argument());
2736                 cur.message(_("Paragraph layout set"));
2737                 break;
2738         }
2739
2740         case LFUN_PARAGRAPH_PARAMS: {
2741                 // Given data, an encoding of the ParagraphParameters as we'd
2742                 // find them in a LyX file, this function modifies the current paragraph,
2743                 // or currently selected paragraphs.
2744                 // NOTE: This function only modifies, and does not override, existing
2745                 // settings.
2746                 setParagraphs(cur, cmd.argument(), true);
2747                 cur.message(_("Paragraph layout set"));
2748                 break;
2749         }
2750
2751         case LFUN_ESCAPE:
2752                 if (cur.selection()) {
2753                         cur.selection(false);
2754                 } else {
2755                         cur.undispatched();
2756                         // This used to be LFUN_FINISHED_RIGHT, I think FORWARD is more
2757                         // correct, but I'm not 100% sure -- dov, 071019
2758                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
2759                 }
2760                 break;
2761
2762         case LFUN_OUTLINE_UP:
2763                 outline(OutlineUp, cur, this);
2764                 setCursor(cur, cur.pit(), cur.pos());
2765                 cur.forceBufferUpdate();
2766                 needsUpdate = true;
2767                 break;
2768
2769         case LFUN_OUTLINE_DOWN:
2770                 outline(OutlineDown, cur, this);
2771                 setCursor(cur, cur.pit(), cur.pos());
2772                 cur.forceBufferUpdate();
2773                 needsUpdate = true;
2774                 break;
2775
2776         case LFUN_OUTLINE_IN:
2777                 outline(OutlineIn, cur, this);
2778                 cur.forceBufferUpdate();
2779                 needsUpdate = true;
2780                 break;
2781
2782         case LFUN_OUTLINE_OUT:
2783                 outline(OutlineOut, cur, this);
2784                 cur.forceBufferUpdate();
2785                 needsUpdate = true;
2786                 break;
2787
2788         case LFUN_SERVER_GET_STATISTICS:
2789                 {
2790                         DocIterator from, to;
2791                         if (cur.selection()) {
2792                                 from = cur.selectionBegin();
2793                                 to = cur.selectionEnd();
2794                         } else {
2795                                 from = doc_iterator_begin(cur.buffer());
2796                                 to = doc_iterator_end(cur.buffer());
2797                         }
2798
2799                         cur.buffer()->updateStatistics(from, to);
2800                         string const arg0 = cmd.getArg(0);
2801                         if (arg0 == "words") {
2802                                 cur.message(convert<docstring>(cur.buffer()->wordCount()));
2803                         } else if (arg0 == "chars") {
2804                                 cur.message(convert<docstring>(cur.buffer()->charCount(false)));
2805                         } else if (arg0 == "chars-space") {
2806                                 cur.message(convert<docstring>(cur.buffer()->charCount(true)));
2807                         } else {
2808                                 cur.message(convert<docstring>(cur.buffer()->wordCount()) + " "
2809                                 + convert<docstring>(cur.buffer()->charCount(false)) + " "
2810                                 + convert<docstring>(cur.buffer()->charCount(true)));
2811                         }
2812                 }
2813                 break;
2814
2815         default:
2816                 LYXERR(Debug::ACTION, "Command " << cmd << " not DISPATCHED by Text");
2817                 cur.undispatched();
2818                 break;
2819         }
2820
2821         needsUpdate |= (cur.pos() != cur.lastpos()) && cur.selection();
2822
2823         if (lyxrc.spellcheck_continuously && !needsUpdate) {
2824                 // Check for misspelled text
2825                 // The redraw is useful because of the painting of
2826                 // misspelled markers depends on the cursor position.
2827                 // Trigger a redraw for cursor moves inside misspelled text.
2828                 if (!cur.inTexted()) {
2829                         // move from regular text to math
2830                         needsUpdate = last_misspelled;
2831                 } else if (oldTopSlice != cur.top() || oldBoundary != cur.boundary()) {
2832                         // move inside regular text
2833                         needsUpdate = last_misspelled
2834                                 || cur.paragraph().isMisspelled(cur.pos(), true);
2835                 }
2836         }
2837
2838         // FIXME: The cursor flag is reset two lines below
2839         // so we need to check here if some of the LFUN did touch that.
2840         // for now only Text::erase() and Text::backspace() do that.
2841         // The plan is to verify all the LFUNs and then to remove this
2842         // singleParUpdate boolean altogether.
2843         if (cur.result().screenUpdate() & Update::Force) {
2844                 singleParUpdate = false;
2845                 needsUpdate = true;
2846         }
2847
2848         // FIXME: the following code should go in favor of fine grained
2849         // update flag treatment.
2850         if (singleParUpdate) {
2851                 // Inserting characters does not change par height in general. So, try
2852                 // to update _only_ this paragraph. BufferView will detect if a full
2853                 // metrics update is needed anyway.
2854                 cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
2855                 return;
2856         }
2857         if (!needsUpdate
2858             && &oldTopSlice.inset() == &cur.inset()
2859             && oldTopSlice.idx() == cur.idx()
2860             && !oldSelection // oldSelection is a backup of cur.selection() at the beginning of the function.
2861             && !cur.selection())
2862                 // FIXME: it would be better if we could just do this
2863                 //
2864                 //if (cur.result().update() != Update::FitCursor)
2865                 //      cur.noScreenUpdate();
2866                 //
2867                 // But some LFUNs do not set Update::FitCursor when needed, so we
2868                 // do it for all. This is not very harmfull as FitCursor will provoke
2869                 // a full redraw only if needed but still, a proper review of all LFUN
2870                 // should be done and this needsUpdate boolean can then be removed.
2871                 cur.screenUpdateFlags(Update::FitCursor);
2872         else
2873                 cur.screenUpdateFlags(Update::Force | Update::FitCursor);
2874 }
2875
2876
2877 bool Text::getStatus(Cursor & cur, FuncRequest const & cmd,
2878                         FuncStatus & flag) const
2879 {
2880         LBUFERR(this == cur.text());
2881
2882         FontInfo const & fontinfo = cur.real_current_font.fontInfo();
2883         bool enable = true;
2884         bool allow_in_passthru = false;
2885         InsetCode code = NO_CODE;
2886
2887         switch (cmd.action()) {
2888
2889         case LFUN_DEPTH_DECREMENT:
2890                 enable = changeDepthAllowed(cur, DEC_DEPTH);
2891                 break;
2892
2893         case LFUN_DEPTH_INCREMENT:
2894                 enable = changeDepthAllowed(cur, INC_DEPTH);
2895                 break;
2896
2897         case LFUN_APPENDIX:
2898                 // FIXME We really should not allow this to be put, e.g.,
2899                 // in a footnote, or in ERT. But it would make sense in a
2900                 // branch, so I'm not sure what to do.
2901                 flag.setOnOff(cur.paragraph().params().startOfAppendix());
2902                 break;
2903
2904         case LFUN_DIALOG_SHOW_NEW_INSET:
2905                 if (cmd.argument() == "bibitem")
2906                         code = BIBITEM_CODE;
2907                 else if (cmd.argument() == "bibtex") {
2908                         code = BIBTEX_CODE;
2909                         // not allowed in description items
2910                         enable = !inDescriptionItem(cur);
2911                 }
2912                 else if (cmd.argument() == "box")
2913                         code = BOX_CODE;
2914                 else if (cmd.argument() == "branch")
2915                         code = BRANCH_CODE;
2916                 else if (cmd.argument() == "citation")
2917                         code = CITE_CODE;
2918                 else if (cmd.argument() == "ert")
2919                         code = ERT_CODE;
2920                 else if (cmd.argument() == "external")
2921                         code = EXTERNAL_CODE;
2922                 else if (cmd.argument() == "float")
2923                         code = FLOAT_CODE;
2924                 else if (cmd.argument() == "graphics")
2925                         code = GRAPHICS_CODE;
2926                 else if (cmd.argument() == "href")
2927                         code = HYPERLINK_CODE;
2928                 else if (cmd.argument() == "include")
2929                         code = INCLUDE_CODE;
2930                 else if (cmd.argument() == "index")
2931                         code = INDEX_CODE;
2932                 else if (cmd.argument() == "index_print")
2933                         code = INDEX_PRINT_CODE;
2934                 else if (cmd.argument() == "listings")
2935                         code = LISTINGS_CODE;
2936                 else if (cmd.argument() == "mathspace")
2937                         code = MATH_HULL_CODE;
2938                 else if (cmd.argument() == "nomenclature")
2939                         code = NOMENCL_CODE;
2940                 else if (cmd.argument() == "nomencl_print")
2941                         code = NOMENCL_PRINT_CODE;
2942                 else if (cmd.argument() == "label")
2943                         code = LABEL_CODE;
2944                 else if (cmd.argument() == "line")
2945                         code = LINE_CODE;
2946                 else if (cmd.argument() == "note")
2947                         code = NOTE_CODE;
2948                 else if (cmd.argument() == "phantom")
2949                         code = PHANTOM_CODE;
2950                 else if (cmd.argument() == "ref")
2951                         code = REF_CODE;
2952                 else if (cmd.argument() == "space")
2953                         code = SPACE_CODE;
2954                 else if (cmd.argument() == "toc")
2955                         code = TOC_CODE;
2956                 else if (cmd.argument() == "vspace")
2957                         code = VSPACE_CODE;
2958                 else if (cmd.argument() == "wrap")
2959                         code = WRAP_CODE;
2960                 break;
2961
2962         case LFUN_ERT_INSERT:
2963                 code = ERT_CODE;
2964                 break;
2965         case LFUN_LISTING_INSERT:
2966                 code = LISTINGS_CODE;
2967                 // not allowed in description items
2968                 enable = !inDescriptionItem(cur);
2969                 break;
2970         case LFUN_FOOTNOTE_INSERT:
2971                 code = FOOT_CODE;
2972                 break;
2973         case LFUN_TABULAR_INSERT:
2974                 code = TABULAR_CODE;
2975                 break;
2976         case LFUN_TABULAR_STYLE_INSERT:
2977                 code = TABULAR_CODE;
2978                 break;
2979         case LFUN_MARGINALNOTE_INSERT:
2980                 code = MARGIN_CODE;
2981                 break;
2982         case LFUN_FLOAT_INSERT:
2983         case LFUN_FLOAT_WIDE_INSERT:
2984                 // FIXME: If there is a selection, we should check whether there
2985                 // are floats in the selection, but this has performance issues, see
2986                 // LFUN_CHANGE_ACCEPT/REJECT.
2987                 code = FLOAT_CODE;
2988                 if (inDescriptionItem(cur))
2989                         // not allowed in description items
2990                         enable = false;
2991                 else {
2992                         InsetCode const inset_code = cur.inset().lyxCode();
2993
2994                         // algorithm floats cannot be put in another float
2995                         if (to_utf8(cmd.argument()) == "algorithm") {
2996                                 enable = inset_code != WRAP_CODE && inset_code != FLOAT_CODE;
2997                                 break;
2998                         }
2999
3000                         // for figures and tables: only allow in another
3001                         // float or wrap if it is of the same type and
3002                         // not a subfloat already
3003                         if(cur.inset().lyxCode() == code) {
3004                                 InsetFloat const & ins =
3005                                         static_cast<InsetFloat const &>(cur.inset());
3006                                 enable = ins.params().type == to_utf8(cmd.argument())
3007                                         && !ins.params().subfloat;
3008                         } else if(cur.inset().lyxCode() == WRAP_CODE) {
3009                                 InsetWrap const & ins =
3010                                         static_cast<InsetWrap const &>(cur.inset());
3011                                 enable = ins.params().type == to_utf8(cmd.argument());
3012                         }
3013                 }
3014                 break;
3015         case LFUN_WRAP_INSERT:
3016                 code = WRAP_CODE;
3017                 // not allowed in description items
3018                 enable = !inDescriptionItem(cur);
3019                 break;
3020         case LFUN_FLOAT_LIST_INSERT: {
3021                 code = FLOAT_LIST_CODE;
3022                 // not allowed in description items
3023                 enable = !inDescriptionItem(cur);
3024                 if (enable) {
3025                         FloatList const & floats = cur.buffer()->params().documentClass().floats();
3026                         FloatList::const_iterator cit = floats[to_ascii(cmd.argument())];
3027                         // make sure we know about such floats
3028                         if (cit == floats.end() ||
3029                                         // and that we know how to generate a list of them
3030                             (!cit->second.usesFloatPkg() && cit->second.listCommand().empty())) {
3031                                 flag.setUnknown(true);
3032                                 // probably not necessary, but...
3033                                 enable = false;
3034                         }
3035                 }
3036                 break;
3037         }
3038         case LFUN_CAPTION_INSERT: {
3039                 code = CAPTION_CODE;
3040                 string arg = cmd.getArg(0);
3041                 bool varia = arg != "Unnumbered"
3042                         && cur.inset().allowsCaptionVariation(arg);
3043                 // not allowed in description items,
3044                 // and in specific insets
3045                 enable = !inDescriptionItem(cur)
3046                         && (varia || arg.empty() || arg == "Standard");
3047                 break;
3048         }
3049         case LFUN_NOTE_INSERT:
3050                 code = NOTE_CODE;
3051                 break;
3052         case LFUN_FLEX_INSERT: {
3053                 code = FLEX_CODE;
3054                 string s = cmd.getArg(0);
3055                 InsetLayout il =
3056                         cur.buffer()->params().documentClass().insetLayout(from_utf8(s));
3057                 if (il.lyxtype() != InsetLayout::CHARSTYLE &&
3058                     il.lyxtype() != InsetLayout::CUSTOM &&
3059                     il.lyxtype() != InsetLayout::ELEMENT &&
3060                     il.lyxtype ()!= InsetLayout::STANDARD)
3061                         enable = false;
3062                 break;
3063                 }
3064         case LFUN_BOX_INSERT:
3065                 code = BOX_CODE;
3066                 break;
3067         case LFUN_BRANCH_INSERT:
3068                 code = BRANCH_CODE;
3069                 if (cur.buffer()->masterBuffer()->params().branchlist().empty()
3070                     && cur.buffer()->params().branchlist().empty())
3071                         enable = false;
3072                 break;
3073         case LFUN_IPA_INSERT:
3074                 code = IPA_CODE;
3075                 break;
3076         case LFUN_PHANTOM_INSERT:
3077                 code = PHANTOM_CODE;
3078                 break;
3079         case LFUN_LABEL_INSERT:
3080                 code = LABEL_CODE;
3081                 break;
3082         case LFUN_INFO_INSERT:
3083                 code = INFO_CODE;
3084                 enable = cmd.argument().empty()
3085                         || infoparams.validateArgument(cur.buffer(), cmd.argument(), true);
3086                 break;
3087         case LFUN_ARGUMENT_INSERT: {
3088                 code = ARG_CODE;
3089                 allow_in_passthru = true;
3090                 string const arg = cmd.getArg(0);
3091                 if (arg.empty()) {
3092                         enable = false;
3093                         break;
3094                 }
3095                 Layout const & lay = cur.paragraph().layout();
3096                 Layout::LaTeXArgMap args = lay.args();
3097                 Layout::LaTeXArgMap::const_iterator const lait =
3098                                 args.find(arg);
3099                 if (lait != args.end()) {
3100                         enable = true;
3101                         pit_type pit = cur.pit();
3102                         pit_type lastpit = cur.pit();
3103                         if (lay.isEnvironment() && !prefixIs(arg, "item:")) {
3104                                 // In a sequence of "merged" environment layouts, we only allow
3105                                 // non-item arguments once.
3106                                 lastpit = cur.lastpit();
3107                                 // get the first paragraph in sequence with this layout
3108                                 depth_type const current_depth = cur.paragraph().params().depth();
3109                                 while (true) {
3110                                         if (pit == 0)
3111                                                 break;
3112                                         Paragraph cpar = pars_[pit - 1];
3113                                         if (cpar.layout() == lay && cpar.params().depth() == current_depth)
3114                                                 --pit;
3115                                         else
3116                                                 break;
3117                                 }
3118                         }
3119                         for (; pit <= lastpit; ++pit) {
3120                                 if (pars_[pit].layout() != lay)
3121                                         break;
3122                                 for (auto const & table : pars_[pit].insetList())
3123                                         if (InsetArgument const * ins = table.inset->asInsetArgument())
3124                                                 if (ins->name() == arg) {
3125                                                         // we have this already
3126                                                         enable = false;
3127                                                         break;
3128                                                 }
3129                         }
3130                 } else
3131                         enable = false;
3132                 break;
3133         }
3134         case LFUN_INDEX_INSERT:
3135                 code = INDEX_CODE;
3136                 break;
3137         case LFUN_INDEX_PRINT:
3138                 code = INDEX_PRINT_CODE;
3139                 // not allowed in description items
3140                 enable = !inDescriptionItem(cur);
3141                 break;
3142         case LFUN_NOMENCL_INSERT:
3143                 if (cur.selIsMultiCell() || cur.selIsMultiLine()) {
3144                         enable = false;
3145                         break;
3146                 }
3147                 code = NOMENCL_CODE;
3148                 break;
3149         case LFUN_NOMENCL_PRINT:
3150                 code = NOMENCL_PRINT_CODE;
3151                 // not allowed in description items
3152                 enable = !inDescriptionItem(cur);
3153                 break;
3154         case LFUN_HREF_INSERT:
3155                 if (cur.selIsMultiCell() || cur.selIsMultiLine()) {
3156                         enable = false;
3157                         break;
3158                 }
3159                 code = HYPERLINK_CODE;
3160                 break;
3161         case LFUN_IPAMACRO_INSERT: {
3162                 string const arg = cmd.getArg(0);
3163                 if (arg == "deco")
3164                         code = IPADECO_CODE;
3165                 else
3166                         code = IPACHAR_CODE;
3167                 break;
3168         }
3169         case LFUN_QUOTE_INSERT:
3170                 // always allow this, since we will inset a raw quote
3171                 // if an inset is not allowed.
3172                 allow_in_passthru = true;
3173                 break;
3174         case LFUN_SPECIALCHAR_INSERT:
3175                 code = SPECIALCHAR_CODE;
3176                 break;
3177         case LFUN_SPACE_INSERT:
3178                 // slight hack: we know this is allowed in math mode
3179                 if (cur.inTexted())
3180                         code = SPACE_CODE;
3181                 break;
3182         case LFUN_PREVIEW_INSERT:
3183                 code = PREVIEW_CODE;
3184                 break;
3185         case LFUN_SCRIPT_INSERT:
3186                 code = SCRIPT_CODE;
3187                 break;
3188
3189         case LFUN_MATH_INSERT:
3190         case LFUN_MATH_AMS_MATRIX:
3191         case LFUN_MATH_MATRIX:
3192         case LFUN_MATH_DELIM:
3193         case LFUN_MATH_BIGDELIM:
3194         case LFUN_MATH_DISPLAY:
3195         case LFUN_MATH_MODE:
3196         case LFUN_MATH_MACRO:
3197         case LFUN_MATH_SUBSCRIPT:
3198         case LFUN_MATH_SUPERSCRIPT:
3199                 code = MATH_HULL_CODE;
3200                 break;
3201
3202         case LFUN_REGEXP_MODE:
3203                 code = MATH_HULL_CODE;
3204                 enable = cur.buffer()->isInternal() && !cur.inRegexped();
3205                 break;
3206
3207         case LFUN_INSET_MODIFY:
3208                 // We need to disable this, because we may get called for a
3209                 // tabular cell via
3210                 // InsetTabular::getStatus() -> InsetText::getStatus()
3211                 // and we don't handle LFUN_INSET_MODIFY.
3212                 enable = false;
3213                 break;
3214
3215         case LFUN_FONT_EMPH:
3216                 flag.setOnOff(fontinfo.emph() == FONT_ON);
3217                 enable = !cur.paragraph().isPassThru();
3218                 break;
3219
3220         case LFUN_FONT_ITAL:
3221                 flag.setOnOff(fontinfo.shape() == ITALIC_SHAPE);
3222                 enable = !cur.paragraph().isPassThru();
3223                 break;
3224
3225         case LFUN_FONT_NOUN:
3226                 flag.setOnOff(fontinfo.noun() == FONT_ON);
3227                 enable = !cur.paragraph().isPassThru();
3228                 break;
3229
3230         case LFUN_FONT_BOLD:
3231         case LFUN_FONT_BOLDSYMBOL:
3232                 flag.setOnOff(fontinfo.series() == BOLD_SERIES);
3233                 enable = !cur.paragraph().isPassThru();
3234                 break;
3235
3236         case LFUN_FONT_SANS:
3237                 flag.setOnOff(fontinfo.family() == SANS_FAMILY);
3238                 enable = !cur.paragraph().isPassThru();
3239                 break;
3240
3241         case LFUN_FONT_ROMAN:
3242                 flag.setOnOff(fontinfo.family() == ROMAN_FAMILY);
3243                 enable = !cur.paragraph().isPassThru();
3244                 break;
3245
3246         case LFUN_FONT_TYPEWRITER:
3247                 flag.setOnOff(fontinfo.family() == TYPEWRITER_FAMILY);
3248                 enable = !cur.paragraph().isPassThru();
3249                 break;
3250
3251         case LFUN_CUT:
3252         case LFUN_COPY:
3253                 enable = cur.selection();
3254                 break;
3255
3256         case LFUN_PASTE: {
3257                 if (cmd.argument().empty()) {
3258                         if (theClipboard().isInternal())
3259                                 enable = cap::numberOfSelections() > 0;
3260                         else
3261                                 enable = !theClipboard().empty();
3262                         break;
3263                 }
3264
3265                 // we have an argument
3266                 string const arg = to_utf8(cmd.argument());
3267                 if (isStrUnsignedInt(arg)) {
3268                         // it's a number and therefore means the internal stack
3269                         unsigned int n = convert<unsigned int>(arg);
3270                         enable = cap::numberOfSelections() > n;
3271                         break;
3272                 }
3273
3274                 // explicit text type?
3275                 if (arg == "html") {
3276                         // Do not enable for PlainTextType, since some tidying in the
3277                         // frontend is needed for HTML, which is too unsafe for plain text.
3278                         enable = theClipboard().hasTextContents(Clipboard::HtmlTextType);
3279                         break;
3280                 } else if (arg == "latex") {
3281                         // LaTeX is usually not available on the clipboard with
3282                         // the correct MIME type, but in plain text.
3283                         enable = theClipboard().hasTextContents(Clipboard::PlainTextType) ||
3284                                  theClipboard().hasTextContents(Clipboard::LaTeXTextType);
3285                         break;
3286                 }
3287
3288                 Clipboard::GraphicsType type = Clipboard::AnyGraphicsType;
3289                 if (arg == "pdf")
3290                         type = Clipboard::PdfGraphicsType;
3291                 else if (arg == "png")
3292                         type = Clipboard::PngGraphicsType;
3293                 else if (arg == "jpeg")
3294                         type = Clipboard::JpegGraphicsType;
3295                 else if (arg == "linkback")
3296                         type = Clipboard::LinkBackGraphicsType;
3297                 else if (arg == "emf")
3298                         type = Clipboard::EmfGraphicsType;
3299                 else if (arg == "wmf")
3300                         type = Clipboard::WmfGraphicsType;
3301                 else {
3302                         // unknown argument
3303                         LYXERR0("Unrecognized graphics type: " << arg);
3304                         // we don't want to assert if the user just mistyped the LFUN
3305                         LATTEST(cmd.origin() != FuncRequest::INTERNAL);
3306                         enable = false;
3307                         break;
3308                 }
3309                 enable = theClipboard().hasGraphicsContents(type);
3310                 break;
3311         }
3312
3313         case LFUN_CLIPBOARD_PASTE:
3314         case LFUN_CLIPBOARD_PASTE_SIMPLE:
3315                 enable = !theClipboard().empty();
3316                 break;
3317
3318         case LFUN_PRIMARY_SELECTION_PASTE:
3319                 enable = cur.selection() || !theSelection().empty();
3320                 break;
3321
3322         case LFUN_SELECTION_PASTE:
3323                 enable = cap::selection();
3324                 break;
3325
3326         case LFUN_PARAGRAPH_MOVE_UP:
3327                 enable = cur.pit() > 0 && !cur.selection();
3328                 break;
3329
3330         case LFUN_PARAGRAPH_MOVE_DOWN:
3331                 enable = cur.pit() < cur.lastpit() && !cur.selection();
3332                 break;
3333
3334         case LFUN_CHANGE_ACCEPT:
3335         case LFUN_CHANGE_REJECT:
3336                 if (!cur.selection())
3337                         enable = cur.paragraph().isChanged(cur.pos());
3338                 else {
3339                         // will enable if there is a change in the selection
3340                         enable = false;
3341
3342                         // cheap improvement for efficiency: using cached
3343                         // buffer variable, if there is no change in the
3344                         // document, no need to check further.
3345                         if (!cur.buffer()->areChangesPresent())
3346                                 break;
3347
3348                         for (DocIterator it = cur.selectionBegin(); ; it.forwardPar()) {
3349                                 pos_type const beg = it.pos();
3350                                 pos_type end;
3351                                 bool const in_last_par = (it.pit() == cur.selectionEnd().pit() &&
3352                                                           it.idx() == cur.selectionEnd().idx());
3353                                 if (in_last_par)
3354                                         end = cur.selectionEnd().pos();
3355                                 else
3356                                         // the +1 is needed for cases, e.g., where there is a
3357                                         // paragraph break. See #11629.
3358                                         end = it.lastpos() + 1;
3359                                 if (beg != end && it.paragraph().isChanged(beg, end)) {
3360                                         enable = true;
3361                                         break;
3362                                 }
3363                                 if (beg != end && it.paragraph().hasChangedInsets(beg, end)) {
3364                                         enable = true;
3365                                         break;
3366                                 }
3367                                 if (in_last_par)
3368                                         break;
3369                         }
3370                 }
3371                 break;
3372
3373         case LFUN_OUTLINE_UP:
3374         case LFUN_OUTLINE_DOWN:
3375         case LFUN_OUTLINE_IN:
3376         case LFUN_OUTLINE_OUT:
3377                 // FIXME: LyX is not ready for outlining within inset.
3378                 enable = isMainText()
3379                         && cur.buffer()->text().getTocLevel(cur.pit()) != Layout::NOT_IN_TOC;
3380                 break;
3381
3382         case LFUN_NEWLINE_INSERT:
3383                 // LaTeX restrictions (labels or empty par)
3384                 enable = !cur.paragraph().isPassThru()
3385                         && cur.pos() > cur.paragraph().beginOfBody();
3386                 break;
3387
3388         case LFUN_SEPARATOR_INSERT:
3389                 // Always enabled for now
3390                 enable = true;
3391                 break;
3392
3393         case LFUN_TAB_INSERT:
3394         case LFUN_TAB_DELETE:
3395                 enable = cur.paragraph().isPassThru();
3396                 break;
3397
3398         case LFUN_GRAPHICS_SET_GROUP: {
3399                 InsetGraphics * ins = graphics::getCurrentGraphicsInset(cur);
3400                 if (!ins)
3401                         enable = false;
3402                 else
3403                         flag.setOnOff(to_utf8(cmd.argument()) == ins->getParams().groupId);
3404                 break;
3405         }
3406
3407         case LFUN_NEWPAGE_INSERT:
3408                 // not allowed in description items
3409                 code = NEWPAGE_CODE;
3410                 enable = !inDescriptionItem(cur);
3411                 break;
3412
3413         case LFUN_LANGUAGE:
3414                 enable = !cur.paragraph().isPassThru();
3415                 flag.setOnOff(cmd.getArg(0) == cur.real_current_font.language()->lang());
3416                 break;
3417
3418         case LFUN_PARAGRAPH_BREAK:
3419                 enable = inset().allowMultiPar();
3420                 break;
3421
3422         case LFUN_SPELLING_ADD:
3423         case LFUN_SPELLING_IGNORE:
3424         case LFUN_SPELLING_REMOVE:
3425                 enable = theSpellChecker() != nullptr;
3426                 if (enable && !cmd.getArg(1).empty()) {
3427                         // validate explicitly given language
3428                         Language const * const lang = const_cast<Language *>(languages.getLanguage(cmd.getArg(1)));
3429                         enable &= lang != nullptr;
3430                 }
3431                 break;
3432
3433         case LFUN_LAYOUT:
3434         case LFUN_LAYOUT_TOGGLE: {
3435                 bool const ignoreautonests = cmd.getArg(1) == "ignoreautonests";
3436                 docstring const req_layout = ignoreautonests ? from_utf8(cmd.getArg(0)) : cmd.argument();
3437                 docstring const layout = resolveLayout(req_layout, cur);
3438
3439                 enable = !owner_->forcePlainLayout() && !layout.empty();
3440                 flag.setOnOff(isAlreadyLayout(layout, cur));
3441                 break;
3442         }
3443
3444         case LFUN_ENVIRONMENT_SPLIT: {
3445                 if (cmd.argument() == "outer") {
3446                         // check if we have an environment in our nesting hierarchy
3447                         bool res = false;
3448                         depth_type const current_depth = cur.paragraph().params().depth();
3449                         pit_type pit = cur.pit();
3450                         Paragraph cpar = pars_[pit];
3451                         while (true) {
3452                                 if (pit == 0 || cpar.params().depth() == 0)
3453                                         break;
3454                                 --pit;
3455                                 cpar = pars_[pit];
3456                                 if (cpar.params().depth() < current_depth)
3457                                         res = cpar.layout().isEnvironment();
3458                         }
3459                         enable = res;
3460                         break;
3461                 }
3462                 else if (cmd.argument() == "previous") {
3463                         // look if we have an environment in the previous par
3464                         pit_type pit = cur.pit();
3465                         Paragraph cpar = pars_[pit];
3466                         if (pit > 0) {
3467                                 --pit;
3468                                 cpar = pars_[pit];
3469                                 enable = cpar.layout().isEnvironment();
3470                                 break;
3471                         }
3472                         enable = false;
3473                         break;
3474                 }
3475                 else if (cur.paragraph().layout().isEnvironment()) {
3476                         enable = cmd.argument() == "before"
3477                                 || cur.pos() > 0 || !isFirstInSequence(cur.pit());
3478                         break;
3479                 }
3480                 enable = false;
3481                 break;
3482         }
3483
3484         case LFUN_LAYOUT_PARAGRAPH:
3485         case LFUN_PARAGRAPH_PARAMS:
3486         case LFUN_PARAGRAPH_PARAMS_APPLY:
3487         case LFUN_PARAGRAPH_UPDATE:
3488                 enable = owner_->allowParagraphCustomization();
3489                 break;
3490
3491         // FIXME: why are accent lfuns forbidden with pass_thru layouts?
3492         //  Because they insert COMBINING DIACRITICAL Unicode characters,
3493         //  that cannot be handled by LaTeX but must be converted according
3494         //  to the definition in lib/unicodesymbols?
3495         case LFUN_ACCENT_ACUTE:
3496         case LFUN_ACCENT_BREVE:
3497         case LFUN_ACCENT_CARON:
3498         case LFUN_ACCENT_CEDILLA:
3499         case LFUN_ACCENT_CIRCLE:
3500         case LFUN_ACCENT_CIRCUMFLEX:
3501         case LFUN_ACCENT_DOT:
3502         case LFUN_ACCENT_GRAVE:
3503         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
3504         case LFUN_ACCENT_MACRON:
3505         case LFUN_ACCENT_OGONEK:
3506         case LFUN_ACCENT_TIE:
3507         case LFUN_ACCENT_TILDE:
3508         case LFUN_ACCENT_PERISPOMENI:
3509         case LFUN_ACCENT_UMLAUT:
3510         case LFUN_ACCENT_UNDERBAR:
3511         case LFUN_ACCENT_UNDERDOT:
3512         case LFUN_FONT_FRAK:
3513         case LFUN_FONT_SIZE:
3514         case LFUN_FONT_STATE:
3515         case LFUN_FONT_UNDERLINE:
3516         case LFUN_FONT_STRIKEOUT:
3517         case LFUN_FONT_CROSSOUT:
3518         case LFUN_FONT_UNDERUNDERLINE:
3519         case LFUN_FONT_UNDERWAVE:
3520         case LFUN_TEXTSTYLE_UPDATE:
3521                 enable = !cur.paragraph().isPassThru();
3522                 break;
3523
3524         case LFUN_FONT_DEFAULT: {
3525                 Font font(inherit_font, ignore_language);
3526                 BufferParams const & bp = cur.buffer()->masterParams();
3527                 if (cur.selection()) {
3528                         enable = false;
3529                         // Check if we have a non-default font attribute
3530                         // in the selection range.
3531                         DocIterator const from = cur.selectionBegin();
3532                         DocIterator const to = cur.selectionEnd();
3533                         for (DocIterator dit = from ; dit != to && !dit.atEnd(); ) {
3534                                 if (!dit.inTexted()) {
3535                                         dit.forwardPos();
3536                                         continue;
3537                                 }
3538                                 Paragraph const & par = dit.paragraph();
3539                                 pos_type const pos = dit.pos();
3540                                 Font tmp = par.getFontSettings(bp, pos);
3541                                 if (tmp.fontInfo() != font.fontInfo()
3542                                     || tmp.language() != bp.language) {
3543                                         enable = true;
3544                                         break;
3545                                 }
3546                                 dit.forwardPos();
3547                         }
3548                         break;
3549                 }
3550                 // Disable if all is default already.
3551                 enable = (cur.current_font.fontInfo() != font.fontInfo()
3552                           || cur.current_font.language() != bp.language);
3553                 break;
3554         }
3555
3556         case LFUN_TEXTSTYLE_APPLY:
3557                 enable = !freeFonts.empty();
3558                 break;
3559
3560         case LFUN_WORD_DELETE_FORWARD:
3561         case LFUN_WORD_DELETE_BACKWARD:
3562         case LFUN_LINE_DELETE_FORWARD:
3563         case LFUN_WORD_FORWARD:
3564         case LFUN_WORD_BACKWARD:
3565         case LFUN_WORD_RIGHT:
3566         case LFUN_WORD_LEFT:
3567         case LFUN_CHAR_FORWARD:
3568         case LFUN_CHAR_FORWARD_SELECT:
3569         case LFUN_CHAR_BACKWARD:
3570         case LFUN_CHAR_BACKWARD_SELECT:
3571         case LFUN_CHAR_LEFT:
3572         case LFUN_CHAR_LEFT_SELECT:
3573         case LFUN_CHAR_RIGHT:
3574         case LFUN_CHAR_RIGHT_SELECT:
3575         case LFUN_UP:
3576         case LFUN_UP_SELECT:
3577         case LFUN_DOWN:
3578         case LFUN_DOWN_SELECT:
3579         case LFUN_PARAGRAPH_SELECT:
3580         case LFUN_PARAGRAPH_UP_SELECT:
3581         case LFUN_PARAGRAPH_DOWN_SELECT:
3582         case LFUN_LINE_BEGIN_SELECT:
3583         case LFUN_LINE_END_SELECT:
3584         case LFUN_WORD_FORWARD_SELECT:
3585         case LFUN_WORD_BACKWARD_SELECT:
3586         case LFUN_WORD_RIGHT_SELECT:
3587         case LFUN_WORD_LEFT_SELECT:
3588         case LFUN_WORD_SELECT:
3589         case LFUN_SECTION_SELECT:
3590         case LFUN_BUFFER_BEGIN:
3591         case LFUN_BUFFER_END:
3592         case LFUN_BUFFER_BEGIN_SELECT:
3593         case LFUN_BUFFER_END_SELECT:
3594         case LFUN_INSET_BEGIN:
3595         case LFUN_INSET_END:
3596         case LFUN_INSET_BEGIN_SELECT:
3597         case LFUN_INSET_END_SELECT:
3598         case LFUN_PARAGRAPH_UP:
3599         case LFUN_PARAGRAPH_DOWN:
3600         case LFUN_LINE_BEGIN:
3601         case LFUN_LINE_END:
3602         case LFUN_CHAR_DELETE_FORWARD:
3603         case LFUN_CHAR_DELETE_BACKWARD:
3604         case LFUN_WORD_UPCASE:
3605         case LFUN_WORD_LOWCASE:
3606         case LFUN_WORD_CAPITALIZE:
3607         case LFUN_CHARS_TRANSPOSE:
3608         case LFUN_SERVER_GET_XY:
3609         case LFUN_SERVER_SET_XY:
3610         case LFUN_SERVER_GET_LAYOUT:
3611         case LFUN_SELF_INSERT:
3612         case LFUN_UNICODE_INSERT:
3613         case LFUN_THESAURUS_ENTRY:
3614         case LFUN_ESCAPE:
3615         case LFUN_SERVER_GET_STATISTICS:
3616                 // these are handled in our dispatch()
3617                 enable = true;
3618                 break;
3619
3620         case LFUN_INSET_INSERT: {
3621                 string const type = cmd.getArg(0);
3622                 if (type == "toc") {
3623                         code = TOC_CODE;
3624                         // not allowed in description items
3625                         //FIXME: couldn't this be merged in Inset::insetAllowed()?
3626                         enable = !inDescriptionItem(cur);
3627                 } else {
3628                         enable = true;
3629                 }
3630                 break;
3631         }
3632
3633         case LFUN_SEARCH_IGNORE: {
3634                 bool const value = cmd.getArg(1) == "true";
3635                 setIgnoreFormat(cmd.getArg(0), value);
3636                 break;
3637         }
3638
3639         default:
3640                 return false;
3641         }
3642
3643         if (code != NO_CODE
3644             && (cur.empty()
3645                 || !cur.inset().insetAllowed(code)
3646                 || (cur.paragraph().layout().pass_thru && !allow_in_passthru)))
3647                 enable = false;
3648
3649         flag.setEnabled(enable);
3650         return true;
3651 }
3652
3653
3654 void Text::pasteString(Cursor & cur, docstring const & clip,
3655                 bool asParagraphs)
3656 {
3657         if (!clip.empty()) {
3658                 cur.recordUndo();
3659                 if (asParagraphs)
3660                         insertStringAsParagraphs(cur, clip, cur.current_font);
3661                 else
3662                         insertStringAsLines(cur, clip, cur.current_font);
3663         }
3664 }
3665
3666
3667 // FIXME: an item inset would make things much easier.
3668 bool Text::inDescriptionItem(Cursor & cur) const
3669 {
3670         Paragraph & par = cur.paragraph();
3671         pos_type const pos = cur.pos();
3672         pos_type const body_pos = par.beginOfBody();
3673
3674         if (par.layout().latextype != LATEX_LIST_ENVIRONMENT
3675             && (par.layout().latextype != LATEX_ITEM_ENVIRONMENT
3676                 || par.layout().margintype != MARGIN_FIRST_DYNAMIC))
3677                 return false;
3678
3679         return (pos < body_pos
3680                 || (pos == body_pos
3681                     && (pos == 0 || par.getChar(pos - 1) != ' ')));
3682 }
3683
3684
3685 std::vector<docstring> Text::getFreeFonts() const
3686 {
3687         vector<docstring> ffList;
3688
3689         for (auto const & f : freeFonts)
3690                 ffList.push_back(f.first);
3691
3692         return ffList;
3693 }
3694
3695 } // namespace lyx