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 "Buffer.h"
  22 #include "BufferParams.h"
  23 #include "BufferView.h"
  24 #include "Cursor.h"
  25 #include "CutAndPaste.h"
  26 #include "DispatchResult.h"
  27 #include "factory.h"
  28 #include "FloatList.h"
  29 #include "FuncStatus.h"
  30 #include "FuncRequest.h"
  31 #include "InsetList.h"
  32 #include "Intl.h"
  33 #include "Language.h"
  34 #include "Layout.h"
  35 #include "LyXAction.h"
  36 #include "LyX.h"
  37 #include "Lexer.h"
  38 #include "LyXRC.h"
  39 #include "Paragraph.h"
  40 #include "ParagraphParameters.h"
  41 #include "SpellChecker.h"
  42 #include "TextClass.h"
  43 #include "TextMetrics.h"
  44 #include "Thesaurus.h"
  45 #include "WordLangTuple.h"
  46
  47 #include "frontends/alert.h"
  48 #include "frontends/Application.h"
  49 #include "frontends/Clipboard.h"
  50 #include "frontends/Selection.h"
  51
  52 #include "insets/InsetArgument.h"
  53 #include "insets/InsetCollapsible.h"
  54 #include "insets/InsetCommand.h"
  55 #include "insets/InsetExternal.h"
  56 #include "insets/InsetFloat.h"
  57 #include "insets/InsetFloatList.h"
  58 #include "insets/InsetGraphics.h"
  59 #include "insets/InsetGraphicsParams.h"
  60 #include "insets/InsetInfo.h"
  61 #include "insets/InsetIPAMacro.h"
  62 #include "insets/InsetNewline.h"
  63 #include "insets/InsetQuotes.h"
  64 #include "insets/InsetSpecialChar.h"
  65 #include "insets/InsetText.h"
  66 #include "insets/InsetWrap.h"
  67
  68 #include "support/convert.h"
  69 #include "support/debug.h"
  70 #include "support/filetools.h"
  71 #include "support/gettext.h"
  72 #include "support/lassert.h"
  73 #include "support/limited_stack.h"
  74 #include "support/lstrings.h"
  75
  76 #include "mathed/InsetMathHull.h"
  77 #include "mathed/InsetMathMacroTemplate.h"
  78 #include "lyxfind.h"
  79
  80 #include <clocale>
  81 #include <regex>
  82 #include <sstream>
  83
  84 using namespace std;
  85 using namespace lyx::support;
  86
  87 namespace lyx {
  88
  89 using cap::copySelection;
  90 using cap::copySelectionToTemp;
  91 using cap::cutSelection;
  92 using cap::cutSelectionToTemp;
  93 using cap::pasteFromStack;
  94 using cap::pasteFromTemp;
  95 using cap::pasteClipboardText;
  96 using cap::pasteClipboardGraphics;
  97 using cap::replaceSelection;
  98 using cap::grabAndEraseSelection;
  99 using cap::selClearOrDel;
 100 using cap::pasteSimpleText;
 101 using frontend::Clipboard;
 102
 103 // globals...
 104 typedef limited_stack<pair<docstring, Font>> FontStack;
 105 static FontStack freeFonts(15);
 106 static bool toggleall = false;
 107
 108 static void toggleAndShow(Cursor & cur, Text * text,
 109         Font const & font, bool togall = true)
 110 {
 111         text->toggleFree(cur, font, togall);
 112
 113         if (font.language() != ignore_language ||
 114             font.fontInfo().number() != FONT_IGNORE) {
 115                 TextMetrics const & tm = cur.bv().textMetrics(text);
 116                 if (cur.boundary() != tm.isRTLBoundary(cur.pit(), cur.pos(),
 117                                                        cur.real_current_font))
 118                         text->setCursor(cur, cur.pit(), cur.pos(),
 119                                         false, !cur.boundary());
 120         }
 121 }
 122
 123
 124 static void moveCursor(Cursor & cur, bool selecting)
 125 {
 126         if (selecting || cur.mark())
 127                 cur.setSelection();
 128 }
 129
 130
 131 static void finishChange(Cursor & cur, bool selecting)
 132 {
 133         cur.finishUndo();
 134         moveCursor(cur, selecting);
 135 }
 136
 137
 138 static void mathDispatch(Cursor & cur, FuncRequest const & cmd)
 139 {
 140         cur.recordUndo();
 141         docstring sel = cur.selectionAsString(false);
 142
 143         // It may happen that sel is empty but there is a selection
 144         replaceSelection(cur);
 145
 146         // Is this a valid formula?
 147         bool valid = true;
 148
 149         if (sel.empty()) {
 150 #ifdef ENABLE_ASSERTIONS
 151                 const int old_pos = cur.pos();
 152 #endif
 153                 cur.insert(new InsetMathHull(cur.buffer(), hullSimple));
 154 #ifdef ENABLE_ASSERTIONS
 155                 LATTEST(old_pos == cur.pos());
 156 #endif
 157                 cur.nextInset()->edit(cur, true);
 158                 if (cmd.action() != LFUN_MATH_MODE)
 159                         // LFUN_MATH_MODE has a different meaning in math mode
 160                         cur.dispatch(cmd);
 161         } else {
 162                 InsetMathHull * formula = new InsetMathHull(cur.buffer());
 163                 string const selstr = to_utf8(sel);
 164                 istringstream is(selstr);
 165                 Lexer lex;
 166                 lex.setStream(is);
 167                 if (!formula->readQuiet(lex)) {
 168                         // No valid formula, let's try with delims
 169                         is.str("$" + selstr + "$");
 170                         lex.setStream(is);
 171                         if (!formula->readQuiet(lex)) {
 172                                 // Still not valid, leave it as is
 173                                 valid = false;
 174                                 delete formula;
 175                                 cur.insert(sel);
 176                         }
 177                 }
 178                 if (valid) {
 179                         cur.insert(formula);
 180                         cur.nextInset()->edit(cur, true);
 181                         LASSERT(cur.inMathed(), return);
 182                         cur.pos() = 0;
 183                         cur.resetAnchor();
 184                         cur.selection(true);
 185                         cur.pos() = cur.lastpos();
 186                         if (cmd.action() != LFUN_MATH_MODE)
 187                                 // LFUN_MATH_MODE has a different meaning in math mode
 188                                 cur.dispatch(cmd);
 189                         cur.clearSelection();
 190                         cur.pos() = cur.lastpos();
 191                 }
 192         }
 193         if (valid)
 194                 cur.message(from_utf8(N_("Math editor mode")));
 195         else
 196                 cur.message(from_utf8(N_("No valid math formula")));
 197 }
 198
 199
 200 void regexpDispatch(Cursor & cur, FuncRequest const & cmd)
 201 {
 202         LASSERT(cmd.action() == LFUN_REGEXP_MODE, return);
 203         if (cur.inRegexped()) {
 204                 cur.message(_("Already in regular expression mode"));
 205                 return;
 206         }
 207         cur.recordUndo();
 208         docstring sel = cur.selectionAsString(false);
 209
 210         // It may happen that sel is empty but there is a selection
 211         replaceSelection(cur);
 212
 213         cur.insert(new InsetMathHull(cur.buffer(), hullRegexp));
 214         cur.nextInset()->edit(cur, true);
 215         cur.niceInsert(sel);
 216
 217         cur.message(_("Regexp editor mode"));
 218 }
 219
 220
 221 static void specialChar(Cursor & cur, InsetSpecialChar::Kind kind)
 222 {
 223         cur.recordUndo();
 224         cap::replaceSelection(cur);
 225         cur.insert(new InsetSpecialChar(kind));
 226         cur.posForward();
 227 }
 228
 229
 230 static void ipaChar(Cursor & cur, InsetIPAChar::Kind kind)
 231 {
 232         cur.recordUndo();
 233         cap::replaceSelection(cur);
 234         cur.insert(new InsetIPAChar(kind));
 235         cur.posForward();
 236 }
 237
 238
 239 static bool doInsertInset(Cursor & cur, Text * text,
 240         FuncRequest const & cmd, bool edit, bool pastesel)
 241 {
 242         Buffer & buffer = cur.bv().buffer();
 243         BufferParams const & bparams = buffer.params();
 244         Inset * inset = createInset(&buffer, cmd);
 245         if (!inset)
 246                 return false;
 247
 248         if (InsetCollapsible * ci = inset->asInsetCollapsible())
 249                 ci->setButtonLabel();
 250
 251         cur.recordUndo();
 252         if (cmd.action() == LFUN_ARGUMENT_INSERT) {
 253                 bool cotextinsert = false;
 254                 InsetArgument const * const ia = static_cast<InsetArgument const *>(inset);
 255                 Layout const & lay = cur.paragraph().layout();
 256                 Layout::LaTeXArgMap args = lay.args();
 257                 Layout::LaTeXArgMap::const_iterator const lait = args.find(ia->name());
 258                 if (lait != args.end())
 259                         cotextinsert = (*lait).second.insertcotext;
 260                 else {
 261                         InsetLayout const & il = cur.inset().getLayout();
 262                         args = il.args();
 263                         Layout::LaTeXArgMap::const_iterator const ilait = args.find(ia->name());
 264                         if (ilait != args.end())
 265                                 cotextinsert = (*ilait).second.insertcotext;
 266                 }
 267                 // The argument requests to insert a copy of the co-text to the inset
 268                 if (cotextinsert) {
 269                         docstring ds;
 270                         // If we have a selection within a paragraph, use this
 271                         if (cur.selection() && cur.selBegin().pit() == cur.selEnd().pit())
 272                                 ds = cur.selectionAsString(false);
 273                         // else use the whole paragraph
 274                         else
 275                                 ds = cur.paragraph().asString();
 276                         text->insertInset(cur, inset);
 277                         if (edit)
 278                                 inset->edit(cur, true);
 279                         // Now put co-text into inset
 280                         Font const f(inherit_font, cur.current_font.language());
 281                         if (!ds.empty()) {
 282                                 cur.text()->insertStringAsLines(cur, ds, f);
 283                                 cur.leaveInset(*inset);
 284                         }
 285                         return true;
 286                 }
 287         }
 288
 289         bool gotsel = false;
 290         bool move_layout = false;
 291         if (cur.selection()) {
 292                 if (cmd.action() == LFUN_INDEX_INSERT)
 293                         copySelectionToTemp(cur);
 294                 else {
 295                         cutSelectionToTemp(cur, pastesel);
 296                         /* Move layout information inside the inset if the whole
 297                          * paragraph and the inset allows setting layout
 298                          * FIXME: this does not work as expected when change tracking is on
 299                          *   However, we do not really know what to do in this case.
 300                          */
 301                         if (cur.paragraph().empty() && !inset->forcePlainLayout()) {
 302                                 cur.paragraph().setPlainOrDefaultLayout(bparams.documentClass());
 303                                 move_layout = true;
 304                         }
 305                 }
 306                 cur.clearSelection();
 307                 gotsel = true;
 308         } else if (cmd.action() == LFUN_INDEX_INSERT) {
 309                 gotsel = text->selectWordWhenUnderCursor(cur, WHOLE_WORD);
 310                 copySelectionToTemp(cur);
 311                 cur.clearSelection();
 312         }
 313         text->insertInset(cur, inset);
 314
 315         if (edit)
 316                 inset->edit(cur, true);
 317
 318         if (!gotsel || !pastesel)
 319                 return true;
 320
 321         pasteFromTemp(cur, cur.buffer()->errorList("Paste"));
 322         cur.buffer()->errors("Paste");
 323         cur.clearSelection(); // bug 393
 324         cur.finishUndo();
 325         InsetText * inset_text = inset->asInsetText();
 326         if (inset_text) {
 327                 inset_text->fixParagraphsFont();
 328                 cur.pos() = 0;
 329                 cur.pit() = 0;
 330                 /* If the containing paragraph has kept its layout, reset the
 331                  * layout of the first paragraph of the inset.
 332                  */
 333                 if (!move_layout)
 334                         cur.paragraph().setPlainOrDefaultLayout(bparams.documentClass());
 335                 // FIXME: what does this do?
 336                 if (cmd.action() == LFUN_FLEX_INSERT)
 337                         return true;
 338                 Cursor old = cur;
 339                 cur.leaveInset(*inset);
 340                 if (cmd.action() == LFUN_PREVIEW_INSERT
 341                         || cmd.action() == LFUN_IPA_INSERT)
 342                         // trigger preview
 343                         notifyCursorLeavesOrEnters(old, cur);
 344         } else {
 345                 cur.leaveInset(*inset);
 346                 // reset surrounding par to default
 347                 DocumentClass const & dc = bparams.documentClass();
 348                 docstring const layoutname = inset->usePlainLayout()
 349                         ? dc.plainLayoutName()
 350                         : dc.defaultLayoutName();
 351                 text->setLayout(cur, layoutname);
 352         }
 353         return true;
 354 }
 355
 356
 357 /// the type of outline operation
 358 enum OutlineOp {
 359         OutlineUp, // Move this header with text down
 360         OutlineDown,   // Move this header with text up
 361         OutlineIn, // Make this header deeper
 362         OutlineOut // Make this header shallower
 363 };
 364
 365
 366 static void insertSeparator(Cursor const & cur, depth_type const depth)
 367 {
 368         Buffer & buf = *cur.buffer();
 369         lyx::dispatch(FuncRequest(LFUN_PARAGRAPH_BREAK));
 370         DocumentClass const & tc = buf.params().documentClass();
 371         lyx::dispatch(FuncRequest(LFUN_LAYOUT, from_ascii("\"") + tc.plainLayout().name()
 372                                   + from_ascii("\" ignoreautonests")));
 373         // FIXME: Bibitem mess!
 374         if (cur.prevInset() && cur.prevInset()->lyxCode() == BIBITEM_CODE)
 375                 lyx::dispatch(FuncRequest(LFUN_CHAR_DELETE_BACKWARD));
 376         lyx::dispatch(FuncRequest(LFUN_SEPARATOR_INSERT, "plain"));
 377         while (cur.paragraph().params().depth() > depth)
 378                 lyx::dispatch(FuncRequest(LFUN_DEPTH_DECREMENT));
 379 }
 380
 381
 382 static void outline(OutlineOp mode, Cursor & cur, Text * text)
 383 {
 384         Buffer & buf = *cur.buffer();
 385         pit_type & pit = cur.pit();
 386         ParagraphList & pars = buf.text().paragraphs();
 387         ParagraphList::iterator const bgn = pars.begin();
 388         // The first paragraph of the area to be copied:
 389         ParagraphList::iterator start = pars.iterator_at(pit);
 390         // The final paragraph of area to be copied:
 391         ParagraphList::iterator finish = start;
 392         ParagraphList::iterator const end = pars.end();
 393         depth_type const current_depth = cur.paragraph().params().depth();
 394
 395         int const thistoclevel = buf.text().getTocLevel(distance(bgn, start));
 396         int toclevel;
 397
 398         // Move out (down) from this section header
 399         if (finish != end)
 400                 ++finish;
 401
 402         // Seek the one (on same level) below
 403         for (; finish != end; ++finish) {
 404                 toclevel = buf.text().getTocLevel(distance(bgn, finish));
 405                 if (toclevel != Layout::NOT_IN_TOC && toclevel <= thistoclevel)
 406                         break;
 407         }
 408
 409         switch (mode) {
 410                 case OutlineUp: {
 411                         if (start == pars.begin())
 412                                 // Nothing to move.
 413                                 return;
 414                         ParagraphList::iterator dest = start;
 415                         // Move out (up) from this header
 416                         if (dest == bgn)
 417                                 return;
 418                         // Search previous same-level header above
 419                         do {
 420                                 --dest;
 421                                 toclevel = buf.text().getTocLevel(distance(bgn, dest));
 422                         } while(dest != bgn
 423                                 && (toclevel == Layout::NOT_IN_TOC
 424                                     || toclevel > thistoclevel));
 425                         // Not found; do nothing
 426                         if (toclevel == Layout::NOT_IN_TOC || toclevel > thistoclevel)
 427                                 return;
 428                         pit_type newpit = distance(bgn, dest);
 429                         pit_type const len = distance(start, finish);
 430                         pit_type const deletepit = pit + len;
 431                         buf.undo().recordUndo(cur, newpit, deletepit - 1);
 432                         // If we move an environment upwards, make sure it is
 433                         // separated from its new neighbour below:
 434                         // If an environment of the same layout follows, and the moved
 435                         // paragraph sequence does not end with a separator, insert one.
 436                         ParagraphList::iterator lastmoved = finish;
 437                         --lastmoved;
 438                         if (start->layout().isEnvironment()
 439                             && dest->layout() == start->layout()
 440                             && !lastmoved->isEnvSeparator(lastmoved->beginOfBody())) {
 441                                 cur.pit() = distance(bgn, lastmoved);
 442                                 cur.pos() = cur.lastpos();
 443                                 insertSeparator(cur, current_depth);
 444                                 cur.pit() = pit;
 445                         }
 446                         // Likewise, if we moved an environment upwards, make sure it
 447                         // is separated from its new neighbour above.
 448                         // The paragraph before the target of movement
 449                         if (dest != bgn) {
 450                                 ParagraphList::iterator before = dest;
 451                                 --before;
 452                                 // Get the parent paragraph (outer in nested context)
 453                                 pit_type const parent =
 454                                         before->params().depth() > current_depth
 455                                                 ? text->depthHook(distance(bgn, before), current_depth)
 456                                                 : distance(bgn, before);
 457                                 // If a environment with same layout preceeds the moved one in the new
 458                                 // position, and there is no separator yet, insert one.
 459                                 if (start->layout().isEnvironment()
 460                                     && pars[parent].layout() == start->layout()
 461                                     && !before->isEnvSeparator(before->beginOfBody())) {
 462                                         cur.pit() = distance(bgn, before);
 463                                         cur.pos() = cur.lastpos();
 464                                         insertSeparator(cur, current_depth);
 465                                         cur.pit() = pit;
 466                                 }
 467                         }
 468                         newpit = distance(bgn, dest);
 469                         pars.splice(dest, start, finish);
 470                         cur.pit() = newpit;
 471                         break;
 472                 }
 473                 case OutlineDown: {
 474                         if (finish == end)
 475                                 // Nothing to move.
 476                                 return;
 477                         // Go one down from *this* header:
 478                         ParagraphList::iterator dest = next(finish, 1);
 479                         // Go further down to find header to insert in front of:
 480                         for (; dest != end; ++dest) {
 481                                 toclevel = buf.text().getTocLevel(distance(bgn, dest));
 482                                 if (toclevel != Layout::NOT_IN_TOC
 483                                       && toclevel <= thistoclevel)
 484                                         break;
 485                         }
 486                         // One such was found, so go on...
 487                         // If we move an environment downwards, make sure it is
 488                         // separated from its new neighbour above.
 489                         pit_type newpit = distance(bgn, dest);
 490                         buf.undo().recordUndo(cur, pit, newpit - 1);
 491                         // The paragraph before the target of movement
 492                         ParagraphList::iterator before = dest;
 493                         --before;
 494                         // Get the parent paragraph (outer in nested context)
 495                         pit_type const parent =
 496                                 before->params().depth() > current_depth
 497                                         ? text->depthHook(distance(bgn, before), current_depth)
 498                                         : distance(bgn, before);
 499                         // If a environment with same layout preceeds the moved one in the new
 500                         // position, and there is no separator yet, insert one.
 501                         if (start->layout().isEnvironment()
 502                             && pars[parent].layout() == start->layout()
 503                             && !before->isEnvSeparator(before->beginOfBody())) {
 504                                 cur.pit() = distance(bgn, before);
 505                                 cur.pos() = cur.lastpos();
 506                                 insertSeparator(cur, current_depth);
 507                                 cur.pit() = pit;
 508                         }
 509                         // Likewise, make sure moved environments are separated
 510                         // from their new neighbour below:
 511                         // If an environment of the same layout follows, and the moved
 512                         // paragraph sequence does not end with a separator, insert one.
 513                         ParagraphList::iterator lastmoved = finish;
 514                         --lastmoved;
 515                         if (dest != end
 516                             && start->layout().isEnvironment()
 517                             && dest->layout() == start->layout()
 518                             && !lastmoved->isEnvSeparator(lastmoved->beginOfBody())) {
 519                                 cur.pit() = distance(bgn, lastmoved);
 520                                 cur.pos() = cur.lastpos();
 521                                 insertSeparator(cur, current_depth);
 522                                 cur.pit() = pit;
 523                         }
 524                         newpit = distance(bgn, dest);
 525                         pit_type const len = distance(start, finish);
 526                         pars.splice(dest, start, finish);
 527                         cur.pit() = newpit - len;
 528                         break;
 529                 }
 530                 case OutlineIn:
 531                 case OutlineOut: {
 532                         pit_type const len = distance(start, finish);
 533                         buf.undo().recordUndo(cur, pit, pit + len - 1);
 534                         for (; start != finish; ++start) {
 535                                 toclevel = buf.text().getTocLevel(distance(bgn, start));
 536                                 if (toclevel == Layout::NOT_IN_TOC)
 537                                         continue;
 538
 539                                 DocumentClass const & tc = buf.params().documentClass();
 540                                 int const newtoclevel =
 541                                         (mode == OutlineIn ? toclevel + 1 : toclevel - 1);
 542                                 LabelType const oldlabeltype = start->layout().labeltype;
 543
 544                                 for (auto const & lay : tc) {
 545                                         if (lay.toclevel ==  newtoclevel &&
 546                                                  lay.labeltype == oldlabeltype) {
 547                                                 start->setLayout(lay);
 548                                                 break;
 549                                         }
 550                                 }
 551                         }
 552                         break;
 553                 }
 554         }
 555 }
 556
 557
 558 void Text::number(Cursor & cur)
 559 {
 560         FontInfo font = ignore_font;
 561         font.setNumber(FONT_TOGGLE);
 562         toggleAndShow(cur, this, Font(font, ignore_language));
 563 }
 564
 565
 566 bool Text::isRTL(pit_type const pit) const
 567 {
 568         Buffer const & buffer = owner_->buffer();
 569         return pars_[pit].isRTL(buffer.params());
 570 }
 571
 572
 573 namespace {
 574
 575 Language const * getLanguage(Cursor const & cur, string const & lang)
 576 {
 577         return lang.empty() ? cur.getFont().language() : languages.getLanguage(lang);
 578 }
 579
 580
 581 docstring resolveLayout(docstring layout, DocIterator const & dit)
 582 {
 583         Paragraph const & par = dit.paragraph();
 584         DocumentClass const & tclass = dit.buffer()->params().documentClass();
 585
 586         if (layout.empty())
 587                 layout = tclass.defaultLayoutName();
 588
 589         if (dit.inset().forcePlainLayout(dit.idx()))
 590                 // in this case only the empty layout is allowed
 591                 layout = tclass.plainLayoutName();
 592         else if (par.usePlainLayout()) {
 593                 // in this case, default layout maps to empty layout
 594                 if (layout == tclass.defaultLayoutName())
 595                         layout = tclass.plainLayoutName();
 596         } else {
 597                 // otherwise, the empty layout maps to the default
 598                 if (layout == tclass.plainLayoutName())
 599                         layout = tclass.defaultLayoutName();
 600         }
 601
 602         // If the entry is obsolete, use the new one instead.
 603         if (tclass.hasLayout(layout)) {
 604                 docstring const & obs = tclass[layout].obsoleted_by();
 605                 if (!obs.empty())
 606                         layout = obs;
 607         }
 608         if (!tclass.hasLayout(layout))
 609                 layout.clear();
 610         return layout;
 611 }
 612
 613
 614 bool isAlreadyLayout(docstring const & layout, CursorData const & cur)
 615 {
 616         ParagraphList const & pars = cur.text()->paragraphs();
 617
 618         pit_type pit = cur.selBegin().pit();
 619         pit_type const epit = cur.selEnd().pit() + 1;
 620         for ( ; pit != epit; ++pit)
 621                 if (pars[pit].layout().name() != layout)
 622                         return false;
 623
 624         return true;
 625 }
 626
 627
 628 } // namespace
 629
 630
 631 void Text::dispatch(Cursor & cur, FuncRequest & cmd)
 632 {
 633         LYXERR(Debug::ACTION, "Text::dispatch: cmd: " << cmd);
 634
 635         // Dispatch if the cursor is inside the text. It is not the
 636         // case for context menus (bug 5797).
 637         if (cur.text() != this) {
 638                 cur.undispatched();
 639                 return;
 640         }
 641
 642         BufferView * bv = &cur.bv();
 643         TextMetrics * tm = &bv->textMetrics(this);
 644         if (!tm->contains(cur.pit())) {
 645                 lyx::dispatch(FuncRequest(LFUN_SCREEN_SHOW_CURSOR));
 646                 tm = &bv->textMetrics(this);
 647         }
 648
 649         // FIXME: We use the update flag to indicates wether a singlePar or a
 650         // full screen update is needed. We reset it here but shall we restore it
 651         // at the end?
 652         cur.noScreenUpdate();
 653
 654         LBUFERR(this == cur.text());
 655
 656         // NOTE: This should NOT be a reference. See commit 94a5481a.
 657         CursorSlice const oldTopSlice = cur.top();
 658         bool const oldBoundary = cur.boundary();
 659         bool const oldSelection = cur.selection();
 660         // Signals that, even if needsUpdate == false, an update of the
 661         // cursor paragraph is required
 662         bool singleParUpdate = lyxaction.funcHasFlag(cmd.action(),
 663                 LyXAction::SingleParUpdate);
 664         // Signals that a full-screen update is required
 665         bool needsUpdate = !(lyxaction.funcHasFlag(cmd.action(),
 666                 LyXAction::NoUpdate) || singleParUpdate);
 667         bool const last_misspelled = lyxrc.spellcheck_continuously
 668                 && cur.paragraph().isMisspelled(cur.pos(), true);
 669
 670         FuncCode const act = cmd.action();
 671         switch (act) {
 672
 673         case LFUN_PARAGRAPH_MOVE_DOWN: {
 674                 pit_type const pit = cur.pit();
 675                 cur.recordUndo(pit, pit + 1);
 676                 pars_.swap(pit, pit + 1);
 677                 needsUpdate = true;
 678                 cur.forceBufferUpdate();
 679                 ++cur.pit();
 680                 break;
 681         }
 682
 683         case LFUN_PARAGRAPH_MOVE_UP: {
 684                 pit_type const pit = cur.pit();
 685                 cur.recordUndo(pit - 1, pit);
 686                 cur.finishUndo();
 687                 pars_.swap(pit, pit - 1);
 688                 --cur.pit();
 689                 needsUpdate = true;
 690                 cur.forceBufferUpdate();
 691                 break;
 692         }
 693
 694         case LFUN_APPENDIX: {
 695                 Paragraph & par = cur.paragraph();
 696                 bool start = !par.params().startOfAppendix();
 697
 698 // FIXME: The code below only makes sense at top level.
 699 // Should LFUN_APPENDIX be restricted to top-level paragraphs?
 700                 // ensure that we have only one start_of_appendix in this document
 701                 // FIXME: this don't work for multipart document!
 702                 for (pit_type tmp = 0, end = pars_.size(); tmp != end; ++tmp) {
 703                         if (pars_[tmp].params().startOfAppendix()) {
 704                                 cur.recordUndo(tmp, tmp);
 705                                 pars_[tmp].params().startOfAppendix(false);
 706                                 break;
 707                         }
 708                 }
 709
 710                 cur.recordUndo();
 711                 par.params().startOfAppendix(start);
 712
 713                 // we can set the refreshing parameters now
 714                 cur.forceBufferUpdate();
 715                 break;
 716         }
 717
 718         case LFUN_WORD_DELETE_FORWARD:
 719                 if (cur.selection())
 720                         cutSelection(cur, false);
 721                 else
 722                         deleteWordForward(cur, cmd.getArg(0) == "force");
 723                 finishChange(cur, false);
 724                 break;
 725
 726         case LFUN_WORD_DELETE_BACKWARD:
 727                 if (cur.selection())
 728                         cutSelection(cur, false);
 729                 else
 730                         deleteWordBackward(cur, cmd.getArg(0) == "force");
 731                 finishChange(cur, false);
 732                 break;
 733
 734         case LFUN_LINE_DELETE_FORWARD:
 735                 if (cur.selection())
 736                         cutSelection(cur, false);
 737                 else
 738                         tm->deleteLineForward(cur);
 739                 finishChange(cur, false);
 740                 break;
 741
 742         case LFUN_BUFFER_BEGIN:
 743         case LFUN_BUFFER_BEGIN_SELECT:
 744                 needsUpdate |= cur.selHandle(act == LFUN_BUFFER_BEGIN_SELECT);
 745                 if (cur.depth() == 1)
 746                         needsUpdate |= cursorTop(cur);
 747                 else
 748                         cur.undispatched();
 749                 cur.screenUpdateFlags(Update::FitCursor);
 750                 break;
 751
 752         case LFUN_BUFFER_END:
 753         case LFUN_BUFFER_END_SELECT:
 754                 needsUpdate |= cur.selHandle(act == LFUN_BUFFER_END_SELECT);
 755                 if (cur.depth() == 1)
 756                         needsUpdate |= cursorBottom(cur);
 757                 else
 758                         cur.undispatched();
 759                 cur.screenUpdateFlags(Update::FitCursor);
 760                 break;
 761
 762         case LFUN_INSET_BEGIN:
 763         case LFUN_INSET_BEGIN_SELECT:
 764                 needsUpdate |= cur.selHandle(act == LFUN_INSET_BEGIN_SELECT);
 765                 if (cur.depth() == 1 || !cur.top().at_begin())
 766                         needsUpdate |= cursorTop(cur);
 767                 else
 768                         cur.undispatched();
 769                 cur.screenUpdateFlags(Update::FitCursor);
 770                 break;
 771
 772         case LFUN_INSET_END:
 773         case LFUN_INSET_END_SELECT:
 774                 needsUpdate |= cur.selHandle(act == LFUN_INSET_END_SELECT);
 775                 if (cur.depth() == 1 || !cur.top().at_end())
 776                         needsUpdate |= cursorBottom(cur);
 777                 else
 778                         cur.undispatched();
 779                 cur.screenUpdateFlags(Update::FitCursor);
 780                 break;
 781
 782         case LFUN_CHAR_FORWARD:
 783         case LFUN_CHAR_FORWARD_SELECT: {
 784                 //LYXERR0(" LFUN_CHAR_FORWARD[SEL]:\n" << cur);
 785                 needsUpdate |= cur.selHandle(act == LFUN_CHAR_FORWARD_SELECT);
 786                 bool const cur_moved = cursorForward(cur);
 787                 needsUpdate |= cur_moved;
 788
 789                 if (!cur_moved && oldTopSlice == cur.top()
 790                                && cur.boundary() == oldBoundary) {
 791                         cur.undispatched();
 792                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 793
 794                         // we will probably be moving out the inset, so we should execute
 795                         // the depm-mechanism, but only when the cursor has a place to
 796                         // go outside this inset, i.e. in a slice above.
 797                         if (cur.depth() > 1 && cur.pos() == cur.lastpos()
 798                                   && cur.pit() == cur.lastpit()) {
 799                                 // The cursor hasn't changed yet. To give the
 800                                 // DEPM the possibility of doing something we must
 801                                 // provide it with two different cursors.
 802                                 Cursor dummy = cur;
 803                                 dummy.pos() = dummy.pit() = 0;
 804                                 if (cur.bv().checkDepm(dummy, cur))
 805                                         cur.forceBufferUpdate();
 806                         }
 807                 }
 808                 break;
 809         }
 810
 811         case LFUN_CHAR_BACKWARD:
 812         case LFUN_CHAR_BACKWARD_SELECT: {
 813                 //lyxerr << "handle LFUN_CHAR_BACKWARD[_SELECT]:\n" << cur << endl;
 814                 needsUpdate |= cur.selHandle(act == LFUN_CHAR_BACKWARD_SELECT);
 815                 bool const cur_moved = cursorBackward(cur);
 816                 needsUpdate |= cur_moved;
 817
 818                 if (!cur_moved && oldTopSlice == cur.top()
 819                                && cur.boundary() == oldBoundary) {
 820                         cur.undispatched();
 821                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
 822
 823                         // we will probably be moving out the inset, so we should execute
 824                         // the depm-mechanism, but only when the cursor has a place to
 825                         // go outside this inset, i.e. in a slice above.
 826                         if (cur.depth() > 1 && cur.pos() == 0 && cur.pit() == 0) {
 827                                 // The cursor hasn't changed yet. To give the
 828                                 // DEPM the possibility of doing something we must
 829                                 // provide it with two different cursors.
 830                                 Cursor dummy = cur;
 831                                 dummy.pos() = cur.lastpos();
 832                                 dummy.pit() = cur.lastpit();
 833                                 if (cur.bv().checkDepm(dummy, cur))
 834                                         cur.forceBufferUpdate();
 835                         }
 836                 }
 837                 break;
 838         }
 839
 840         case LFUN_CHAR_LEFT:
 841         case LFUN_CHAR_LEFT_SELECT:
 842                 if (lyxrc.visual_cursor) {
 843                         needsUpdate |= cur.selHandle(act == LFUN_CHAR_LEFT_SELECT);
 844                         bool const cur_moved = cursorVisLeft(cur);
 845                         needsUpdate |= cur_moved;
 846                         if (!cur_moved && oldTopSlice == cur.top()
 847                                        && cur.boundary() == oldBoundary) {
 848                                 cur.undispatched();
 849                                 cmd = FuncRequest(LFUN_FINISHED_LEFT);
 850                         }
 851                 } else {
 852                         if (cur.reverseDirectionNeeded()) {
 853                                 cmd.setAction(cmd.action() == LFUN_CHAR_LEFT_SELECT ?
 854                                         LFUN_CHAR_FORWARD_SELECT : LFUN_CHAR_FORWARD);
 855                         } else {
 856                                 cmd.setAction(cmd.action() == LFUN_CHAR_LEFT_SELECT ?
 857                                         LFUN_CHAR_BACKWARD_SELECT : LFUN_CHAR_BACKWARD);
 858                         }
 859                         dispatch(cur, cmd);
 860                         return;
 861                 }
 862                 break;
 863
 864         case LFUN_CHAR_RIGHT:
 865         case LFUN_CHAR_RIGHT_SELECT:
 866                 if (lyxrc.visual_cursor) {
 867                         needsUpdate |= cur.selHandle(cmd.action() == LFUN_CHAR_RIGHT_SELECT);
 868                         bool const cur_moved = cursorVisRight(cur);
 869                         needsUpdate |= cur_moved;
 870                         if (!cur_moved && oldTopSlice == cur.top()
 871                                        && cur.boundary() == oldBoundary) {
 872                                 cur.undispatched();
 873                                 cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 874                         }
 875                 } else {
 876                         if (cur.reverseDirectionNeeded()) {
 877                                 cmd.setAction(cmd.action() == LFUN_CHAR_RIGHT_SELECT ?
 878                                         LFUN_CHAR_BACKWARD_SELECT : LFUN_CHAR_BACKWARD);
 879                         } else {
 880                                 cmd.setAction(cmd.action() == LFUN_CHAR_RIGHT_SELECT ?
 881                                         LFUN_CHAR_FORWARD_SELECT : LFUN_CHAR_FORWARD);
 882                         }
 883                         dispatch(cur, cmd);
 884                         return;
 885                 }
 886                 break;
 887
 888
 889         case LFUN_UP_SELECT:
 890         case LFUN_DOWN_SELECT:
 891         case LFUN_UP:
 892         case LFUN_DOWN: {
 893                 // stop/start the selection
 894                 bool select = cmd.action() == LFUN_DOWN_SELECT ||
 895                         cmd.action() == LFUN_UP_SELECT;
 896
 897                 // move cursor up/down
 898                 bool up = cmd.action() == LFUN_UP_SELECT || cmd.action() == LFUN_UP;
 899                 bool const atFirstOrLastRow = cur.atFirstOrLastRow(up);
 900
 901                 if (!atFirstOrLastRow) {
 902                         needsUpdate |= cur.selHandle(select);
 903                         cur.upDownInText(up, needsUpdate);
 904                         needsUpdate |= cur.beforeDispatchCursor().inMathed();
 905                 } else {
 906                         pos_type newpos = up ? 0 : cur.lastpos();
 907                         if (lyxrc.mac_like_cursor_movement && cur.pos() != newpos) {
 908                                 needsUpdate |= cur.selHandle(select);
 909                                 // we do not reset the targetx of the cursor
 910                                 cur.pos() = newpos;
 911                                 needsUpdate |= bv->checkDepm(cur, bv->cursor());
 912                                 cur.updateTextTargetOffset();
 913                                 if (needsUpdate)
 914                                         cur.forceBufferUpdate();
 915                                 break;
 916                         }
 917
 918                         // if the cursor cannot be moved up or down do not remove
 919                         // the selection right now, but wait for the next dispatch.
 920                         if (select)
 921                                 needsUpdate |= cur.selHandle(select);
 922                         cur.upDownInText(up, needsUpdate);
 923                         cur.undispatched();
 924                 }
 925
 926                 break;
 927         }
 928
 929         case LFUN_PARAGRAPH_SELECT:
 930                 if (cur.pos() > 0)
 931                         needsUpdate |= setCursor(cur, cur.pit(), 0);
 932                 needsUpdate |= cur.selHandle(true);
 933                 if (cur.pos() < cur.lastpos())
 934                         needsUpdate |= setCursor(cur, cur.pit(), cur.lastpos());
 935                 break;
 936
 937         case LFUN_PARAGRAPH_UP:
 938         case LFUN_PARAGRAPH_UP_SELECT:
 939                 needsUpdate |= cur.selHandle(cmd.action() == LFUN_PARAGRAPH_UP_SELECT);
 940                 needsUpdate |= cursorUpParagraph(cur);
 941                 break;
 942
 943         case LFUN_PARAGRAPH_DOWN:
 944         case LFUN_PARAGRAPH_DOWN_SELECT:
 945                 needsUpdate |= cur.selHandle(cmd.action() == LFUN_PARAGRAPH_DOWN_SELECT);
 946                 needsUpdate |= cursorDownParagraph(cur);
 947                 break;
 948
 949         case LFUN_LINE_BEGIN:
 950         case LFUN_LINE_BEGIN_SELECT:
 951                 needsUpdate |= cur.selHandle(cmd.action() == LFUN_LINE_BEGIN_SELECT);
 952                 needsUpdate |= tm->cursorHome(cur);
 953                 break;
 954
 955         case LFUN_LINE_END:
 956         case LFUN_LINE_END_SELECT:
 957                 needsUpdate |= cur.selHandle(cmd.action() == LFUN_LINE_END_SELECT);
 958                 needsUpdate |= tm->cursorEnd(cur);
 959                 break;
 960
 961         case LFUN_SECTION_SELECT: {
 962                 Buffer const & buf = *cur.buffer();
 963                 pit_type const pit = cur.pit();
 964                 ParagraphList & pars = buf.text().paragraphs();
 965                 ParagraphList::iterator bgn = pars.begin();
 966                 // The first paragraph of the area to be selected:
 967                 ParagraphList::iterator start = pars.iterator_at(pit);
 968                 // The final paragraph of area to be selected:
 969                 ParagraphList::iterator finish = start;
 970                 ParagraphList::iterator end = pars.end();
 971
 972                 int const thistoclevel = buf.text().getTocLevel(distance(bgn, start));
 973                 if (thistoclevel == Layout::NOT_IN_TOC)
 974                         break;
 975
 976                 cur.pos() = 0;
 977                 Cursor const old_cur = cur;
 978                 needsUpdate |= cur.selHandle(true);
 979
 980                 // Move out (down) from this section header
 981                 if (finish != end)
 982                         ++finish;
 983
 984                 // Seek the one (on same level) below
 985                 for (; finish != end; ++finish, ++cur.pit()) {
 986                         int const toclevel = buf.text().getTocLevel(distance(bgn, finish));
 987                         if (toclevel != Layout::NOT_IN_TOC && toclevel <= thistoclevel)
 988                                 break;
 989                 }
 990                 cur.pos() = cur.lastpos();
 991                 cur.boundary(false);
 992                 cur.setCurrentFont();
 993
 994                 needsUpdate |= cur != old_cur;
 995                 break;
 996         }
 997
 998         case LFUN_WORD_RIGHT:
 999         case LFUN_WORD_RIGHT_SELECT:
1000                 if (lyxrc.visual_cursor) {
1001                         needsUpdate |= cur.selHandle(cmd.action() == LFUN_WORD_RIGHT_SELECT);
1002                         bool const cur_moved = cursorVisRightOneWord(cur);
1003                         needsUpdate |= cur_moved;
1004                         if (!cur_moved && oldTopSlice == cur.top()
1005                                        && cur.boundary() == oldBoundary) {
1006                                 cur.undispatched();
1007                                 cmd = FuncRequest(LFUN_FINISHED_RIGHT);
1008                         }
1009                 } else {
1010                         if (cur.reverseDirectionNeeded()) {
1011                                 cmd.setAction(cmd.action() == LFUN_WORD_RIGHT_SELECT ?
1012                                                 LFUN_WORD_BACKWARD_SELECT : LFUN_WORD_BACKWARD);
1013                         } else {
1014                                 cmd.setAction(cmd.action() == LFUN_WORD_RIGHT_SELECT ?
1015                                                 LFUN_WORD_FORWARD_SELECT : LFUN_WORD_FORWARD);
1016                         }
1017                         dispatch(cur, cmd);
1018                         return;
1019                 }
1020                 break;
1021
1022         case LFUN_WORD_FORWARD:
1023         case LFUN_WORD_FORWARD_SELECT: {
1024                 needsUpdate |= cur.selHandle(cmd.action() == LFUN_WORD_FORWARD_SELECT);
1025                 bool const cur_moved = cursorForwardOneWord(cur);
1026                 needsUpdate |= cur_moved;
1027
1028                 if (!cur_moved && oldTopSlice == cur.top()
1029                                && cur.boundary() == oldBoundary) {
1030                         cur.undispatched();
1031                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1032
1033                         // we will probably be moving out the inset, so we should execute
1034                         // the depm-mechanism, but only when the cursor has a place to
1035                         // go outside this inset, i.e. in a slice above.
1036                         if (cur.depth() > 1 && cur.pos() == cur.lastpos()
1037                                   && cur.pit() == cur.lastpit()) {
1038                                 // The cursor hasn't changed yet. To give the
1039                                 // DEPM the possibility of doing something we must
1040                                 // provide it with two different cursors.
1041                                 Cursor dummy = cur;
1042                                 dummy.pos() = dummy.pit() = 0;
1043                                 if (cur.bv().checkDepm(dummy, cur))
1044                                         cur.forceBufferUpdate();
1045                         }
1046                 }
1047                 break;
1048         }
1049
1050         case LFUN_WORD_LEFT:
1051         case LFUN_WORD_LEFT_SELECT:
1052                 if (lyxrc.visual_cursor) {
1053                         needsUpdate |= cur.selHandle(cmd.action() == LFUN_WORD_LEFT_SELECT);
1054                         bool const cur_moved = cursorVisLeftOneWord(cur);
1055                         needsUpdate |= cur_moved;
1056                         if (!cur_moved && oldTopSlice == cur.top()
1057                                        && cur.boundary() == oldBoundary) {
1058                                 cur.undispatched();
1059                                 cmd = FuncRequest(LFUN_FINISHED_LEFT);
1060                         }
1061                 } else {
1062                         if (cur.reverseDirectionNeeded()) {
1063                                 cmd.setAction(cmd.action() == LFUN_WORD_LEFT_SELECT ?
1064                                                 LFUN_WORD_FORWARD_SELECT : LFUN_WORD_FORWARD);
1065                         } else {
1066                                 cmd.setAction(cmd.action() == LFUN_WORD_LEFT_SELECT ?
1067                                                 LFUN_WORD_BACKWARD_SELECT : LFUN_WORD_BACKWARD);
1068                         }
1069                         dispatch(cur, cmd);
1070                         return;
1071                 }
1072                 break;
1073
1074         case LFUN_WORD_BACKWARD:
1075         case LFUN_WORD_BACKWARD_SELECT: {
1076                 needsUpdate |= cur.selHandle(cmd.action() == LFUN_WORD_BACKWARD_SELECT);
1077                 bool const cur_moved = cursorBackwardOneWord(cur);
1078                 needsUpdate |= cur_moved;
1079
1080                 if (!cur_moved && oldTopSlice == cur.top()
1081                                && cur.boundary() == oldBoundary) {
1082                         cur.undispatched();
1083                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1084
1085                         // we will probably be moving out the inset, so we should execute
1086                         // the depm-mechanism, but only when the cursor has a place to
1087                         // go outside this inset, i.e. in a slice above.
1088                         if (cur.depth() > 1 && cur.pos() == 0
1089                                   && cur.pit() == 0) {
1090                                 // The cursor hasn't changed yet. To give the
1091                                 // DEPM the possibility of doing something we must
1092                                 // provide it with two different cursors.
1093                                 Cursor dummy = cur;
1094                                 dummy.pos() = cur.lastpos();
1095                                 dummy.pit() = cur.lastpit();
1096                                 if (cur.bv().checkDepm(dummy, cur))
1097                                         cur.forceBufferUpdate();
1098                         }
1099                 }
1100                 break;
1101         }
1102
1103         case LFUN_WORD_SELECT: {
1104                 selectWord(cur, WHOLE_WORD);
1105                 finishChange(cur, true);
1106                 break;
1107         }
1108
1109         case LFUN_NEWLINE_INSERT: {
1110                 InsetNewlineParams inp;
1111                 docstring const & arg = cmd.argument();
1112                 if (arg == "linebreak")
1113                         inp.kind = InsetNewlineParams::LINEBREAK;
1114                 else
1115                         inp.kind = InsetNewlineParams::NEWLINE;
1116                 cap::replaceSelection(cur);
1117                 cur.recordUndo();
1118                 cur.insert(new InsetNewline(inp));
1119                 cur.posForward();
1120                 moveCursor(cur, false);
1121                 break;
1122         }
1123
1124         case LFUN_TAB_INSERT: {
1125                 bool const multi_par_selection = cur.selection() &&
1126                         cur.selBegin().pit() != cur.selEnd().pit();
1127                 if (multi_par_selection) {
1128                         // If there is a multi-paragraph selection, a tab is inserted
1129                         // at the beginning of each paragraph.
1130                         cur.recordUndoSelection();
1131                         pit_type const pit_end = cur.selEnd().pit();
1132                         for (pit_type pit = cur.selBegin().pit(); pit <= pit_end; pit++) {
1133                                 pars_[pit].insertChar(0, '\t',
1134                                                       bv->buffer().params().track_changes);
1135                                 // Update the selection pos to make sure the selection does not
1136                                 // change as the inserted tab will increase the logical pos.
1137                                 if (cur.realAnchor().pit() == pit)
1138                                         cur.realAnchor().forwardPos();
1139                                 if (cur.pit() == pit)
1140                                         cur.forwardPos();
1141                         }
1142                         cur.finishUndo();
1143                 } else {
1144                         // Maybe we shouldn't allow tabs within a line, because they
1145                         // are not (yet) aligned as one might do expect.
1146                         FuncRequest ncmd(LFUN_SELF_INSERT, from_ascii("\t"));
1147                         dispatch(cur, ncmd);
1148                 }
1149                 break;
1150         }
1151
1152         case LFUN_TAB_DELETE: {
1153                 bool const tc = bv->buffer().params().track_changes;
1154                 if (cur.selection()) {
1155                         // If there is a selection, a tab (if present) is removed from
1156                         // the beginning of each paragraph.
1157                         cur.recordUndoSelection();
1158                         pit_type const pit_end = cur.selEnd().pit();
1159                         for (pit_type pit = cur.selBegin().pit(); pit <= pit_end; pit++) {
1160                                 Paragraph & par = paragraphs()[pit];
1161                                 if (par.empty())
1162                                         continue;
1163                                 char_type const c = par.getChar(0);
1164                                 if (c == '\t' || c == ' ') {
1165                                         // remove either 1 tab or 4 spaces.
1166                                         int const n = (c == ' ' ? 4 : 1);
1167                                         for (int i = 0; i < n
1168                                                   && !par.empty() && par.getChar(0) == c; ++i) {
1169                                                 if (cur.pit() == pit)
1170                                                         cur.posBackward();
1171                                                 if (cur.realAnchor().pit() == pit
1172                                                           && cur.realAnchor().pos() > 0 )
1173                                                         cur.realAnchor().backwardPos();
1174                                                 par.eraseChar(0, tc);
1175                                         }
1176                                 }
1177                         }
1178                         cur.finishUndo();
1179                 } else {
1180                         // If there is no selection, try to remove a tab or some spaces
1181                         // before the position of the cursor.
1182                         Paragraph & par = paragraphs()[cur.pit()];
1183                         pos_type const pos = cur.pos();
1184
1185                         if (pos == 0)
1186                                 break;
1187
1188                         char_type const c = par.getChar(pos - 1);
1189                         cur.recordUndo();
1190                         if (c == '\t') {
1191                                 cur.posBackward();
1192                                 par.eraseChar(cur.pos(), tc);
1193                         } else
1194                                 for (int n_spaces = 0;
1195                                      cur.pos() > 0
1196                                              && par.getChar(cur.pos() - 1) == ' '
1197                                              && n_spaces < 4;
1198                                      ++n_spaces) {
1199                                         cur.posBackward();
1200                                         par.eraseChar(cur.pos(), tc);
1201                                 }
1202                         cur.finishUndo();
1203                 }
1204                 break;
1205         }
1206
1207         case LFUN_CHAR_DELETE_FORWARD:
1208                 if (!cur.selection()) {
1209                         if (cur.pos() == cur.paragraph().size())
1210                                 // Par boundary, force full-screen update
1211                                 singleParUpdate = false;
1212                         else if (cmd.getArg(0) != "force" && cur.confirmDeletion()) {
1213                                 cur.resetAnchor();
1214                                 cur.selection(true);
1215                                 cur.posForward();
1216                                 cur.setSelection();
1217                                 break;
1218                         }
1219                         needsUpdate |= erase(cur);
1220                         cur.resetAnchor();
1221                 } else {
1222                         cutSelection(cur, false);
1223                         cur.setCurrentFont();
1224                         singleParUpdate = false;
1225                 }
1226                 moveCursor(cur, false);
1227                 break;
1228
1229         case LFUN_CHAR_DELETE_BACKWARD:
1230                 if (!cur.selection()) {
1231                         if (bv->getIntl().getTransManager().backspace()) {
1232                                 bool par_boundary = cur.pos() == 0;
1233                                 bool first_par = cur.pit() == 0;
1234                                 // Par boundary, full-screen update
1235                                 if (par_boundary)
1236                                         singleParUpdate = false;
1237                                 else if (cmd.getArg(0) != "force" && cur.confirmDeletion(true)) {
1238                                         cur.resetAnchor();
1239                                         cur.selection(true);
1240                                         cur.posBackward();
1241                                         cur.setSelection();
1242                                         break;
1243                                 }
1244                                 needsUpdate |= backspace(cur);
1245                                 cur.resetAnchor();
1246                                 if (par_boundary && !first_par && cur.pos() > 0
1247                                     && cur.paragraph().isEnvSeparator(cur.pos() - 1)) {
1248                                         needsUpdate |= backspace(cur);
1249                                         cur.resetAnchor();
1250                                 }
1251                         }
1252                 } else {
1253                         DocIterator const dit = cur.selectionBegin();
1254                         cutSelection(cur, false);
1255                         if (cur.buffer()->params().track_changes)
1256                                 // since we're doing backwards deletion,
1257                                 // and the selection is not really cut,
1258                                 // move cursor before selection (#11630)
1259                                 cur.setCursor(dit);
1260                         cur.setCurrentFont();
1261                         singleParUpdate = false;
1262                 }
1263                 break;
1264
1265         case LFUN_PARAGRAPH_BREAK: {
1266                 cap::replaceSelection(cur);
1267                 pit_type pit = cur.pit();
1268                 Paragraph const & par = pars_[pit];
1269                 bool lastpar = (pit == pit_type(pars_.size() - 1));
1270                 Paragraph const & nextpar = lastpar ? par : pars_[pit + 1];
1271                 pit_type prev = pit > 0 ? depthHook(pit, par.getDepth()) : pit;
1272                 if (prev < pit && cur.pos() == par.beginOfBody()
1273                     && par.empty() && !par.isEnvSeparator(cur.pos())
1274                     && !par.layout().keepempty
1275                     && !par.layout().isCommand()
1276                     && pars_[prev].layout() != par.layout()
1277                     && pars_[prev].layout().isEnvironment()
1278                     && !nextpar.isEnvSeparator(nextpar.beginOfBody())) {
1279                         if (par.layout().isEnvironment()
1280                             && pars_[prev].getDepth() == par.getDepth()) {
1281                                 docstring const layout = par.layout().name();
1282                                 DocumentClass const & tc = bv->buffer().params().documentClass();
1283                                 lyx::dispatch(FuncRequest(LFUN_LAYOUT, tc.plainLayout().name()));
1284                                 lyx::dispatch(FuncRequest(LFUN_SEPARATOR_INSERT, "plain"));
1285                                 lyx::dispatch(FuncRequest(LFUN_PARAGRAPH_BREAK, "inverse"));
1286                                 lyx::dispatch(FuncRequest(LFUN_LAYOUT, layout));
1287                         } else {
1288                                 lyx::dispatch(FuncRequest(LFUN_SEPARATOR_INSERT, "plain"));
1289                                 breakParagraph(cur);
1290                         }
1291                         Font const f(inherit_font, cur.current_font.language());
1292                         pars_[cur.pit() - 1].resetFonts(f);
1293                 } else {
1294                         if (par.isEnvSeparator(cur.pos()) && cmd.getArg(1) != "ignoresep")
1295                                 cur.posForward();
1296                         breakParagraph(cur, cmd.getArg(0) == "inverse");
1297                 }
1298                 cur.resetAnchor();
1299                 // If we have a list and autoinsert item insets,
1300                 // insert them now.
1301                 Layout::LaTeXArgMap args = par.layout().args();
1302                 for (auto const & thearg : args) {
1303                         Layout::latexarg arg = thearg.second;
1304                         if (arg.autoinsert && prefixIs(thearg.first, "item:")) {
1305                                 FuncRequest cmd2(LFUN_ARGUMENT_INSERT, thearg.first);
1306                                 lyx::dispatch(cmd2);
1307                         }
1308                 }
1309                 break;
1310         }
1311
1312         case LFUN_INSET_INSERT: {
1313                 cur.recordUndo();
1314
1315                 // We have to avoid triggering InstantPreview loading
1316                 // before inserting into the document. See bug #5626.
1317                 bool loaded = bv->buffer().isFullyLoaded();
1318                 bv->buffer().setFullyLoaded(false);
1319                 Inset * inset = createInset(&bv->buffer(), cmd);
1320                 bv->buffer().setFullyLoaded(loaded);
1321
1322                 if (inset) {
1323                         // FIXME (Abdel 01/02/2006):
1324                         // What follows would be a partial fix for bug 2154:
1325                         //   http://www.lyx.org/trac/ticket/2154
1326                         // This automatically put the label inset _after_ a
1327                         // numbered section. It should be possible to extend the mechanism
1328                         // to any kind of LateX environement.
1329                         // The correct way to fix that bug would be at LateX generation.
1330                         // I'll let the code here for reference as it could be used for some
1331                         // other feature like "automatic labelling".
1332                         /*
1333                         Paragraph & par = pars_[cur.pit()];
1334                         if (inset->lyxCode() == LABEL_CODE
1335                                 && !par.layout().counter.empty()) {
1336                                 // Go to the end of the paragraph
1337                                 // Warning: Because of Change-Tracking, the last
1338                                 // position is 'size()' and not 'size()-1':
1339                                 cur.pos() = par.size();
1340                                 // Insert a new paragraph
1341                                 FuncRequest fr(LFUN_PARAGRAPH_BREAK);
1342                                 dispatch(cur, fr);
1343                         }
1344                         */
1345                         if (cur.selection())
1346                                 cutSelection(cur, false);
1347                         cur.insert(inset);
1348                         cur.forceBufferUpdate();
1349                         if (inset->editable() && inset->asInsetText())
1350                                 inset->edit(cur, true);
1351                         else
1352                                 cur.posForward();
1353
1354                         // trigger InstantPreview now
1355                         if (inset->lyxCode() == EXTERNAL_CODE) {
1356                                 InsetExternal & ins =
1357                                         static_cast<InsetExternal &>(*inset);
1358                                 ins.updatePreview();
1359                         }
1360                 }
1361
1362                 break;
1363         }
1364
1365         case LFUN_INSET_DISSOLVE: {
1366                 if (dissolveInset(cur)) {
1367                         needsUpdate = true;
1368                         cur.forceBufferUpdate();
1369                 }
1370                 break;
1371         }
1372
1373         case LFUN_INSET_SPLIT: {
1374                 if (splitInset(cur)) {
1375                         needsUpdate = true;
1376                         cur.forceBufferUpdate();
1377                 }
1378                 break;
1379         }
1380
1381         case LFUN_GRAPHICS_SET_GROUP: {
1382                 InsetGraphics * ins = graphics::getCurrentGraphicsInset(cur);
1383                 if (!ins)
1384                         break;
1385
1386                 cur.recordUndo();
1387
1388                 string id = to_utf8(cmd.argument());
1389                 string grp = graphics::getGroupParams(bv->buffer(), id);
1390                 InsetGraphicsParams tmp, inspar = ins->getParams();
1391
1392                 if (id.empty())
1393                         inspar.groupId = to_utf8(cmd.argument());
1394                 else {
1395                         InsetGraphics::string2params(grp, bv->buffer(), tmp);
1396                         tmp.filename = inspar.filename;
1397                         inspar = tmp;
1398                 }
1399
1400                 ins->setParams(inspar);
1401                 break;
1402         }
1403
1404         case LFUN_SPACE_INSERT:
1405                 if (cur.paragraph().layout().free_spacing)
1406                         insertChar(cur, ' ');
1407                 else {
1408                         doInsertInset(cur, this, cmd, false, false);
1409                         cur.posForward();
1410                 }
1411                 moveCursor(cur, false);
1412                 break;
1413
1414         case LFUN_SPECIALCHAR_INSERT: {
1415                 string const name = to_utf8(cmd.argument());
1416                 if (name == "hyphenation")
1417                         specialChar(cur, InsetSpecialChar::HYPHENATION);
1418                 else if (name == "allowbreak")
1419                         specialChar(cur, InsetSpecialChar::ALLOWBREAK);
1420                 else if (name == "ligature-break")
1421                         specialChar(cur, InsetSpecialChar::LIGATURE_BREAK);
1422                 else if (name == "slash")
1423                         specialChar(cur, InsetSpecialChar::SLASH);
1424                 else if (name == "nobreakdash")
1425                         specialChar(cur, InsetSpecialChar::NOBREAKDASH);
1426                 else if (name == "dots")
1427                         specialChar(cur, InsetSpecialChar::LDOTS);
1428                 else if (name == "end-of-sentence")
1429                         specialChar(cur, InsetSpecialChar::END_OF_SENTENCE);
1430                 else if (name == "menu-separator")
1431                         specialChar(cur, InsetSpecialChar::MENU_SEPARATOR);
1432                 else if (name == "lyx")
1433                         specialChar(cur, InsetSpecialChar::PHRASE_LYX);
1434                 else if (name == "tex")
1435                         specialChar(cur, InsetSpecialChar::PHRASE_TEX);
1436                 else if (name == "latex")
1437                         specialChar(cur, InsetSpecialChar::PHRASE_LATEX);
1438                 else if (name == "latex2e")
1439                         specialChar(cur, InsetSpecialChar::PHRASE_LATEX2E);
1440                 else if (name.empty())
1441                         lyxerr << "LyX function 'specialchar-insert' needs an argument." << endl;
1442                 else
1443                         lyxerr << "Wrong argument for LyX function 'specialchar-insert'." << endl;
1444                 break;
1445         }
1446
1447         case LFUN_IPAMACRO_INSERT: {
1448                 string const arg = cmd.getArg(0);
1449                 if (arg == "deco") {
1450                         // Open the inset, and move the current selection
1451                         // inside it.
1452                         doInsertInset(cur, this, cmd, true, true);
1453                         cur.posForward();
1454                         // Some insets are numbered, others are shown in the outline pane so
1455                         // let's update the labels and the toc backend.
1456                         cur.forceBufferUpdate();
1457                         break;
1458                 }
1459                 if (arg == "tone-falling")
1460                         ipaChar(cur, InsetIPAChar::TONE_FALLING);
1461                 else if (arg == "tone-rising")
1462                         ipaChar(cur, InsetIPAChar::TONE_RISING);
1463                 else if (arg == "tone-high-rising")
1464                         ipaChar(cur, InsetIPAChar::TONE_HIGH_RISING);
1465                 else if (arg == "tone-low-rising")
1466                         ipaChar(cur, InsetIPAChar::TONE_LOW_RISING);
1467                 else if (arg == "tone-high-rising-falling")
1468                         ipaChar(cur, InsetIPAChar::TONE_HIGH_RISING_FALLING);
1469                 else if (arg.empty())
1470                         lyxerr << "LyX function 'ipamacro-insert' needs an argument." << endl;
1471                 else
1472                         lyxerr << "Wrong argument for LyX function 'ipamacro-insert'." << endl;
1473                 break;
1474         }
1475
1476         case LFUN_WORD_UPCASE:
1477                 changeCase(cur, text_uppercase, cmd.getArg(0) == "partial");
1478                 break;
1479
1480         case LFUN_WORD_LOWCASE:
1481                 changeCase(cur, text_lowercase, cmd.getArg(0) == "partial");
1482                 break;
1483
1484         case LFUN_WORD_CAPITALIZE:
1485                 changeCase(cur, text_capitalization, cmd.getArg(0) == "partial");
1486                 break;
1487
1488         case LFUN_CHARS_TRANSPOSE:
1489                 charsTranspose(cur);
1490                 break;
1491
1492         case LFUN_PASTE: {
1493                 cur.message(_("Paste"));
1494                 LASSERT(cur.selBegin().idx() == cur.selEnd().idx(), break);
1495                 cap::replaceSelection(cur);
1496
1497                 // without argument?
1498                 string const arg = to_utf8(cmd.argument());
1499                 if (arg.empty()) {
1500                         bool tryGraphics = true;
1501                         if (theClipboard().isInternal())
1502                                 pasteFromStack(cur, bv->buffer().errorList("Paste"), 0);
1503                         else if (theClipboard().hasTextContents()) {
1504                                 if (pasteClipboardText(cur, bv->buffer().errorList("Paste"),
1505                                                        true, Clipboard::AnyTextType))
1506                                         tryGraphics = false;
1507                         }
1508                         if (tryGraphics && theClipboard().hasGraphicsContents())
1509                                 pasteClipboardGraphics(cur, bv->buffer().errorList("Paste"));
1510                 } else if (isStrUnsignedInt(arg)) {
1511                         // we have a numerical argument
1512                         pasteFromStack(cur, bv->buffer().errorList("Paste"),
1513                                        convert<unsigned int>(arg));
1514                 } else if (arg == "html" || arg == "latex") {
1515                         Clipboard::TextType type = (arg == "html") ?
1516                                 Clipboard::HtmlTextType : Clipboard::LaTeXTextType;
1517                         pasteClipboardText(cur, bv->buffer().errorList("Paste"), true, type);
1518                 } else {
1519                         Clipboard::GraphicsType type = Clipboard::AnyGraphicsType;
1520                         if (arg == "pdf")
1521                                 type = Clipboard::PdfGraphicsType;
1522                         else if (arg == "png")
1523                                 type = Clipboard::PngGraphicsType;
1524                         else if (arg == "jpeg")
1525                                 type = Clipboard::JpegGraphicsType;
1526                         else if (arg == "linkback")
1527                                 type = Clipboard::LinkBackGraphicsType;
1528                         else if (arg == "emf")
1529                                 type = Clipboard::EmfGraphicsType;
1530                         else if (arg == "wmf")
1531                                 type = Clipboard::WmfGraphicsType;
1532                         else
1533                                 // we also check in getStatus()
1534                                 LYXERR0("Unrecognized graphics type: " << arg);
1535
1536                         pasteClipboardGraphics(cur, bv->buffer().errorList("Paste"), type);
1537                 }
1538
1539                 bv->buffer().errors("Paste");
1540                 bv->buffer().updatePreviews(); // bug 11619
1541                 cur.clearSelection(); // bug 393
1542                 cur.finishUndo();
1543                 break;
1544         }
1545
1546         case LFUN_CUT:
1547                 cutSelection(cur, true);
1548                 cur.message(_("Cut"));
1549                 break;
1550
1551         case LFUN_COPY:
1552                 copySelection(cur);
1553                 cur.message(_("Copy"));
1554                 break;
1555
1556         case LFUN_SERVER_GET_XY:
1557                 cur.message(from_utf8(
1558                         convert<string>(tm->cursorX(cur.top(), cur.boundary()))
1559                         + ' ' + convert<string>(tm->cursorY(cur.top(), cur.boundary()))));
1560                 break;
1561
1562         case LFUN_SERVER_SET_XY: {
1563                 int x = 0;
1564                 int y = 0;
1565                 istringstream is(to_utf8(cmd.argument()));
1566                 is >> x >> y;
1567                 if (!is)
1568                         lyxerr << "SETXY: Could not parse coordinates in '"
1569                                << to_utf8(cmd.argument()) << endl;
1570                 else
1571                         tm->setCursorFromCoordinates(cur, x, y);
1572                 break;
1573         }
1574
1575         case LFUN_SERVER_GET_LAYOUT:
1576                 cur.message(cur.paragraph().layout().name());
1577                 break;
1578
1579         case LFUN_LAYOUT:
1580         case LFUN_LAYOUT_TOGGLE: {
1581                 bool const ignoreautonests = cmd.getArg(1) == "ignoreautonests";
1582                 docstring req_layout = ignoreautonests ? from_utf8(cmd.getArg(0)) : cmd.argument();
1583                 LYXERR(Debug::INFO, "LFUN_LAYOUT: (arg) " << to_utf8(req_layout));
1584
1585                 docstring layout = resolveLayout(req_layout, cur);
1586                 if (layout.empty()) {
1587                         cur.errorMessage(from_utf8(N_("Layout ")) + req_layout +
1588                                 from_utf8(N_(" not known")));
1589                         break;
1590                 }
1591
1592                 docstring const old_layout = cur.paragraph().layout().name();
1593                 bool change_layout = !isAlreadyLayout(layout, cur);
1594
1595                 if (cmd.action() == LFUN_LAYOUT_TOGGLE && !change_layout) {
1596                         change_layout = true;
1597                         layout = resolveLayout(docstring(), cur);
1598                 }
1599
1600                 if (change_layout) {
1601                         setLayout(cur, layout);
1602                         if (cur.pit() > 0 && !ignoreautonests) {
1603                                 pit_type prev_pit = cur.pit() - 1;
1604                                 depth_type const cur_depth = pars_[cur.pit()].getDepth();
1605                                 // Scan for the previous par on same nesting level
1606                                 while (prev_pit > 0 && pars_[prev_pit].getDepth() > cur_depth)
1607                                         --prev_pit;
1608                                 set<docstring> const & autonests =
1609                                                 pars_[prev_pit].layout().autonests();
1610                                 set<docstring> const & autonested =
1611                                                 pars_[cur.pit()].layout().isAutonestedBy();
1612                                 if (autonests.find(layout) != autonests.end()
1613                                                 || autonested.find(old_layout) != autonested.end())
1614                                         lyx::dispatch(FuncRequest(LFUN_DEPTH_INCREMENT));
1615                         }
1616                 }
1617
1618                 DocumentClass const & tclass = bv->buffer().params().documentClass();
1619                 bool inautoarg = false;
1620                 for (auto const & la_pair : tclass[layout].args()) {
1621                         Layout::latexarg const & arg = la_pair.second;
1622                         if (arg.autoinsert) {
1623                                 // If we had already inserted an arg automatically,
1624                                 // leave this now in order to insert the next one.
1625                                 if (inautoarg) {
1626                                         cur.leaveInset(cur.inset());
1627                                         cur.posForward();
1628                                 }
1629                                 FuncRequest const cmd2(LFUN_ARGUMENT_INSERT, la_pair.first);
1630                                 lyx::dispatch(cmd2);
1631                                 inautoarg = true;
1632                         }
1633                 }
1634
1635                 break;
1636         }
1637
1638         case LFUN_ENVIRONMENT_SPLIT: {
1639                 bool const outer = cmd.argument() == "outer";
1640                 bool const previous = cmd.argument() == "previous";
1641                 bool const before = cmd.argument() == "before";
1642                 bool const normal = cmd.argument().empty();
1643                 Paragraph const & para = cur.paragraph();
1644                 docstring layout;
1645                 if (para.layout().isEnvironment())
1646                         layout = para.layout().name();
1647                 depth_type split_depth = cur.paragraph().params().depth();
1648                 vector<depth_type> nextpars_depth;
1649                 if (outer || previous) {
1650                         // check if we have an environment in our scope
1651                         pit_type pit = cur.pit();
1652                         Paragraph cpar = pars_[pit];
1653                         while (true) {
1654                                 if (pit == 0)
1655                                         break;
1656                                 --pit;
1657                                 cpar = pars_[pit];
1658                                 if (layout.empty() && previous
1659                                     && cpar.layout().isEnvironment()
1660                                     && cpar.params().depth() <= split_depth)
1661                                         layout = cpar.layout().name();
1662                                 if (cpar.params().depth() < split_depth
1663                                     && cpar.layout().isEnvironment()) {
1664                                                 if (!previous)
1665                                                         layout = cpar.layout().name();
1666                                                 split_depth = cpar.params().depth();
1667                                 }
1668                                 if (cpar.params().depth() == 0)
1669                                         break;
1670                         }
1671                 }
1672                 if ((outer || normal) && cur.pit() < cur.lastpit()) {
1673                         // save nesting of following paragraphs if they are deeper
1674                         // or same depth
1675                         pit_type offset = 1;
1676                         depth_type cur_depth = pars_[cur.pit()].params().depth();
1677                         while (cur.pit() + offset <= cur.lastpit()) {
1678                                 Paragraph cpar = pars_[cur.pit() + offset];
1679                                 depth_type nextpar_depth = cpar.params().depth();
1680                                 if (cur_depth <= nextpar_depth) {
1681                                         nextpars_depth.push_back(nextpar_depth);
1682                                         cur_depth = nextpar_depth;
1683                                         ++offset;
1684                                 } else
1685                                         break;
1686                         }
1687                 }
1688                 if (before)
1689                         cur.top().setPitPos(cur.pit(), 0);
1690                 if (before || cur.pos() > 0)
1691                         lyx::dispatch(FuncRequest(LFUN_PARAGRAPH_BREAK));
1692                 else if (previous && cur.nextInset() && cur.nextInset()->lyxCode() == SEPARATOR_CODE)
1693                         lyx::dispatch(FuncRequest(LFUN_PARAGRAPH_BREAK, "inverse ignoresep"));
1694                 if (outer) {
1695                         while (cur.paragraph().params().depth() > split_depth)
1696                                 lyx::dispatch(FuncRequest(LFUN_DEPTH_DECREMENT));
1697                 }
1698                 DocumentClass const & tc = bv->buffer().params().documentClass();
1699                 lyx::dispatch(FuncRequest(LFUN_LAYOUT, from_ascii("\"") + tc.plainLayout().name()
1700                                           + from_ascii("\" ignoreautonests")));
1701                 // FIXME: Bibitem mess!
1702                 if (cur.prevInset() && cur.prevInset()->lyxCode() == BIBITEM_CODE)
1703                         lyx::dispatch(FuncRequest(LFUN_CHAR_DELETE_BACKWARD));
1704                 lyx::dispatch(FuncRequest(LFUN_SEPARATOR_INSERT, "plain"));
1705                 if (before) {
1706                         cur.backwardPos();
1707                         lyx::dispatch(FuncRequest(LFUN_PARAGRAPH_BREAK, "inverse ignoresep"));
1708                         while (cur.paragraph().params().depth() < split_depth)
1709                                 lyx::dispatch(FuncRequest(LFUN_DEPTH_INCREMENT));
1710                 }
1711                 else
1712                         lyx::dispatch(FuncRequest(LFUN_PARAGRAPH_BREAK, "inverse"));
1713                 lyx::dispatch(FuncRequest(LFUN_LAYOUT, layout));
1714                 if ((outer || normal) && !nextpars_depth.empty()) {
1715                         // restore nesting of following paragraphs
1716                         DocIterator scur = cur;
1717                         depth_type max_depth = cur.paragraph().params().depth() + 1;
1718                         for (auto nextpar_depth : nextpars_depth) {
1719                                 cur.forwardPar();
1720                                 while (cur.paragraph().params().depth() < min(nextpar_depth, max_depth)) {
1721                                         depth_type const olddepth = cur.paragraph().params().depth();
1722                                         lyx::dispatch(FuncRequest(LFUN_DEPTH_INCREMENT));
1723                                         if (olddepth == cur.paragraph().params().depth())
1724                                                 // leave loop if no incrementation happens
1725                                                 break;
1726                                 }
1727                                 max_depth = cur.paragraph().params().depth() + 1;
1728                         }
1729                         cur.setCursor(scur);
1730                 }
1731
1732                 break;
1733         }
1734
1735         case LFUN_CLIPBOARD_PASTE:
1736                 cap::replaceSelection(cur);
1737                 pasteClipboardText(cur, bv->buffer().errorList("Paste"),
1738                                cmd.argument() == "paragraph");
1739                 bv->buffer().errors("Paste");
1740                 break;
1741
1742         case LFUN_CLIPBOARD_PASTE_SIMPLE:
1743                 cap::replaceSelection(cur);
1744                 pasteSimpleText(cur, cmd.argument() == "paragraph");
1745                 break;
1746
1747         case LFUN_PRIMARY_SELECTION_PASTE:
1748                 cap::replaceSelection(cur);
1749                 pasteString(cur, theSelection().get(),
1750                             cmd.argument() == "paragraph");
1751                 break;
1752
1753         case LFUN_SELECTION_PASTE:
1754                 // Copy the selection buffer to the clipboard stack,
1755                 // because we want it to appear in the "Edit->Paste
1756                 // recent" menu.
1757                 cap::replaceSelection(cur);
1758                 cap::copySelectionToStack();
1759                 cap::pasteSelection(bv->cursor(), bv->buffer().errorList("Paste"));
1760                 bv->buffer().errors("Paste");
1761                 break;
1762
1763         case LFUN_QUOTE_INSERT: {
1764                 cap::replaceSelection(cur);
1765                 cur.recordUndo();
1766
1767                 Paragraph const & par = cur.paragraph();
1768                 pos_type pos = cur.pos();
1769                 // Ignore deleted text before cursor
1770                 while (pos > 0 && par.isDeleted(pos - 1))
1771                         --pos;
1772
1773                 bool const inner = (cmd.getArg(0) == "single" || cmd.getArg(0) == "inner");
1774
1775                 // Guess quote side.
1776                 // A space triggers an opening quote. This is passed if the preceding
1777                 // char/inset is a space or at paragraph start.
1778                 char_type c = ' ';
1779                 if (pos > 0 && !par.isSpace(pos - 1)) {
1780                         if (cur.prevInset() && cur.prevInset()->lyxCode() == QUOTE_CODE) {
1781                                 // If an opening double quotation mark precedes, and this
1782                                 // is a single quote, make it opening as well
1783                                 InsetQuotes & ins =
1784                                         static_cast<InsetQuotes &>(*cur.prevInset());
1785                                 string const type = ins.getType();
1786                                 if (!suffixIs(type, "ld") || !inner)
1787                                         c = par.getChar(pos - 1);
1788                         }
1789                         else if (!cur.prevInset()
1790                             || (cur.prevInset() && cur.prevInset()->isChar()))
1791                                 // If a char precedes, pass that and let InsetQuote decide
1792                                 c = par.getChar(pos - 1);
1793                         else {
1794                                 while (pos > 0) {
1795                                         if (par.getInset(pos - 1)
1796                                             && !par.getInset(pos - 1)->isPartOfTextSequence()) {
1797                                                 // skip "invisible" insets
1798                                                 --pos;
1799                                                 continue;
1800                                         }
1801                                         c = par.getChar(pos - 1);
1802                                         break;
1803                                 }
1804                         }
1805                 }
1806                 QuoteLevel const quote_level = inner
1807                                 ? QuoteLevel::Secondary : QuoteLevel::Primary;
1808                 cur.insert(new InsetQuotes(cur.buffer(), c, quote_level, cmd.getArg(1), cmd.getArg(2)));
1809                 cur.buffer()->updateBuffer();
1810                 cur.posForward();
1811                 break;
1812         }
1813
1814         case LFUN_MOUSE_TRIPLE:
1815                 if (cmd.button() == mouse_button::button1) {
1816                         if (cur.pos() > 0)
1817                                 setCursor(cur, cur.pit(), 0);
1818                         bv->cursor() = cur;
1819                         cur.resetAnchor();
1820                         if (cur.pos() < cur.lastpos())
1821                                 setCursor(cur, cur.pit(), cur.lastpos());
1822                         cur.setSelection();
1823                         bv->cursor() = cur;
1824                 }
1825                 break;
1826
1827         case LFUN_MOUSE_DOUBLE:
1828                 if (cmd.button() == mouse_button::button1) {
1829                         selectWord(cur, WHOLE_WORD);
1830                         bv->cursor() = cur;
1831                 }
1832                 break;
1833
1834         // Single-click on work area
1835         case LFUN_MOUSE_PRESS: {
1836                 // We are not marking a selection with the keyboard in any case.
1837                 Cursor & bvcur = cur.bv().cursor();
1838                 bvcur.setMark(false);
1839                 switch (cmd.button()) {
1840                 case mouse_button::button1:
1841                         if (!bvcur.selection())
1842                                 // Set the cursor
1843                                 bvcur.resetAnchor();
1844                         if (!bv->mouseSetCursor(cur, cmd.modifier() == ShiftModifier))
1845                                 cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1846                         if (bvcur.wordSelection())
1847                                 selectWord(bvcur, WHOLE_WORD);
1848                         break;
1849
1850                 case mouse_button::button2:
1851                         if (lyxrc.mouse_middlebutton_paste) {
1852                                 // Middle mouse pasting.
1853                                 bv->mouseSetCursor(cur);
1854                                 lyx::dispatch(
1855                                         FuncRequest(LFUN_COMMAND_ALTERNATIVES,
1856                                                     "selection-paste ; primary-selection-paste paragraph"));
1857                         }
1858                         cur.noScreenUpdate();
1859                         break;
1860
1861                 case mouse_button::button3: {
1862                         // Don't do anything if we right-click a
1863                         // selection, a context menu will popup.
1864                         if (bvcur.selection() && cur >= bvcur.selectionBegin()
1865                             && cur < bvcur.selectionEnd()) {
1866                                 cur.noScreenUpdate();
1867                                 return;
1868                         }
1869                         if (!bv->mouseSetCursor(cur, false))
1870                                 cur.screenUpdateFlags(Update::FitCursor);
1871                         break;
1872                 }
1873
1874                 default:
1875                         break;
1876                 } // switch (cmd.button())
1877                 break;
1878         }
1879         case LFUN_MOUSE_MOTION: {
1880                 // Mouse motion with right or middle mouse do nothing for now.
1881                 if (cmd.button() != mouse_button::button1) {
1882                         cur.noScreenUpdate();
1883                         return;
1884                 }
1885                 // ignore motions deeper nested than the real anchor
1886                 Cursor & bvcur = cur.bv().cursor();
1887                 if (!bvcur.realAnchor().hasPart(cur)) {
1888                         cur.undispatched();
1889                         break;
1890                 }
1891                 CursorSlice old = bvcur.top();
1892
1893                 int const wh = bv->workHeight();
1894                 int const y = max(0, min(wh - 1, cmd.y()));
1895
1896                 tm->setCursorFromCoordinates(cur, cmd.x(), y);
1897                 cur.setTargetX(cmd.x());
1898                 // Don't allow selecting a separator inset
1899                 if (cur.pos() && cur.paragraph().isEnvSeparator(cur.pos() - 1))
1900                         cur.posBackward();
1901                 if (cmd.y() >= wh)
1902                         lyx::dispatch(FuncRequest(LFUN_DOWN_SELECT));
1903                 else if (cmd.y() < 0)
1904                         lyx::dispatch(FuncRequest(LFUN_UP_SELECT));
1905                 // This is to allow jumping over large insets
1906                 if (cur.top() == old) {
1907                         if (cmd.y() >= wh)
1908                                 lyx::dispatch(FuncRequest(LFUN_DOWN_SELECT));
1909                         else if (cmd.y() < 0)
1910                                 lyx::dispatch(FuncRequest(LFUN_UP_SELECT));
1911                 }
1912                 // We continue with our existing selection or start a new one, so don't
1913                 // reset the anchor.
1914                 bvcur.setCursor(cur);
1915                 bvcur.selection(true);
1916                 bvcur.setCurrentFont();
1917                 if (cur.top() == old) {
1918                         // We didn't move one iota, so no need to update the screen.
1919                         cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1920                         //cur.noScreenUpdate();
1921                         return;
1922                 }
1923                 break;
1924         }
1925
1926         case LFUN_MOUSE_RELEASE:
1927                 switch (cmd.button()) {
1928                 case mouse_button::button1:
1929                         // Cursor was set at LFUN_MOUSE_PRESS or LFUN_MOUSE_MOTION time.
1930                         // If there is a new selection, update persistent selection;
1931                         // otherwise, single click does not clear persistent selection
1932                         // buffer.
1933                         if (cur.selection()) {
1934                                 // Finish selection. If double click,
1935                                 // cur is moved to the end of word by
1936                                 // selectWord but bvcur is current
1937                                 // mouse position.
1938                                 cur.bv().cursor().setSelection();
1939                                 // We might have removed an empty but drawn selection
1940                                 // (probably a margin)
1941                                 cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1942                         } else
1943                                 cur.noScreenUpdate();
1944                         // FIXME: We could try to handle drag and drop of selection here.
1945                         return;
1946
1947                 case mouse_button::button2:
1948                         // Middle mouse pasting is handled at mouse press time,
1949                         // see LFUN_MOUSE_PRESS.
1950                         cur.noScreenUpdate();
1951                         return;
1952
1953                 case mouse_button::button3:
1954                         // Cursor was set at LFUN_MOUSE_PRESS time.
1955                         // FIXME: If there is a selection we could try to handle a special
1956                         // drag & drop context menu.
1957                         cur.noScreenUpdate();
1958                         return;
1959
1960                 case mouse_button::none:
1961                 case mouse_button::button4:
1962                 case mouse_button::button5:
1963                         break;
1964                 } // switch (cmd.button())
1965
1966                 break;
1967
1968         case LFUN_SELF_INSERT: {
1969                 if (cmd.argument().empty())
1970                         break;
1971
1972                 // Automatically delete the currently selected
1973                 // text and replace it with what is being
1974                 // typed in now. Depends on lyxrc settings
1975                 // "auto_region_delete", which defaults to
1976                 // true (on).
1977
1978                 if (lyxrc.auto_region_delete && cur.selection()) {
1979                         cutSelection(cur, false);
1980                         cur.setCurrentFont();
1981                 }
1982                 cur.clearSelection();
1983
1984                 for (char_type c : cmd.argument())
1985                         bv->translateAndInsert(c, this, cur);
1986
1987                 cur.resetAnchor();
1988                 moveCursor(cur, false);
1989                 cur.markNewWordPosition();
1990                 bv->bookmarkEditPosition();
1991                 break;
1992         }
1993
1994         case LFUN_HREF_INSERT: {
1995                 docstring content = cmd.argument();
1996                 if (content.empty() && cur.selection())
1997                         content = cur.selectionAsString(false);
1998
1999                 InsetCommandParams p(HYPERLINK_CODE);
2000                 if (!content.empty()){
2001                         // if it looks like a link, we'll put it as target,
2002                         // otherwise as name (bug #8792).
2003
2004                         // We can't do:
2005                         //   regex_match(to_utf8(content), matches, link_re)
2006                         // because smatch stores pointers to the substrings rather
2007                         // than making copies of them. And those pointers become
2008                         // invalid after regex_match returns, since it is then
2009                         // being given a temporary object. (Thanks to Georg for
2010                         // figuring that out.)
2011                         regex const link_re("^([a-z]+):.*");
2012                         smatch matches;
2013                         string const c = to_utf8(lowercase(content));
2014
2015                         if (c.substr(0,7) == "mailto:") {
2016                                 p["target"] = content;
2017                                 p["type"] = from_ascii("mailto:");
2018                         } else if (regex_match(c, matches, link_re)) {
2019                                 p["target"] = content;
2020                                 string protocol = matches.str(1);
2021                                 if (protocol == "file")
2022                                         p["type"] = from_ascii("file:");
2023                         } else
2024                                 p["name"] = content;
2025                 }
2026                 string const data = InsetCommand::params2string(p);
2027
2028                 // we need to have a target. if we already have one, then
2029                 // that gets used at the default for the name, too, which
2030                 // is probably what is wanted.
2031                 if (p["target"].empty()) {
2032                         bv->showDialog("href", data);
2033                 } else {
2034                         FuncRequest fr(LFUN_INSET_INSERT, data);
2035                         dispatch(cur, fr);
2036                 }
2037                 break;
2038         }
2039
2040         case LFUN_LABEL_INSERT: {
2041                 InsetCommandParams p(LABEL_CODE);
2042                 // Try to generate a valid label
2043                 p["name"] = (cmd.argument().empty()) ?
2044                         cur.getPossibleLabel() :
2045                         cmd.argument();
2046                 string const data = InsetCommand::params2string(p);
2047
2048                 if (cmd.argument().empty()) {
2049                         bv->showDialog("label", data);
2050                 } else {
2051                         FuncRequest fr(LFUN_INSET_INSERT, data);
2052                         dispatch(cur, fr);
2053                 }
2054                 break;
2055         }
2056
2057         case LFUN_INFO_INSERT: {
2058                 if (cmd.argument().empty()) {
2059                         bv->showDialog("info", cur.current_font.language()->lang());
2060                 } else {
2061                         Inset * inset;
2062                         inset = createInset(cur.buffer(), cmd);
2063                         if (!inset)
2064                                 break;
2065                         cur.recordUndo();
2066                         insertInset(cur, inset);
2067                         cur.forceBufferUpdate();
2068                         cur.posForward();
2069                 }
2070                 break;
2071         }
2072         case LFUN_CAPTION_INSERT:
2073         case LFUN_FOOTNOTE_INSERT:
2074         case LFUN_NOTE_INSERT:
2075         case LFUN_BOX_INSERT:
2076         case LFUN_BRANCH_INSERT:
2077         case LFUN_PHANTOM_INSERT:
2078         case LFUN_ERT_INSERT:
2079         case LFUN_LISTING_INSERT:
2080         case LFUN_MARGINALNOTE_INSERT:
2081         case LFUN_ARGUMENT_INSERT:
2082         case LFUN_INDEX_INSERT:
2083         case LFUN_PREVIEW_INSERT:
2084         case LFUN_SCRIPT_INSERT:
2085         case LFUN_IPA_INSERT:
2086                 // Open the inset, and move the current selection
2087                 // inside it.
2088                 doInsertInset(cur, this, cmd, true, true);
2089                 cur.posForward();
2090                 if (act == LFUN_SCRIPT_INSERT) {
2091                         /* Script insets change the font style in metrics(), and
2092                          * this is used to compute the height of the caret
2093                          * (because the font is stored in TextMetrics::font_).
2094                          * When we insert, we have to make sure that metrics are
2095                          * computed so that the caret height is wrong. Arguably,
2096                          * this is hackish.*/
2097                         bv->processUpdateFlags(Update::SinglePar);
2098                 }
2099                 cur.setCurrentFont();
2100                 // Some insets are numbered, others are shown in the outline pane so
2101                 // let's update the labels and the toc backend.
2102                 cur.forceBufferUpdate();
2103                 break;
2104
2105         case LFUN_FLEX_INSERT: {
2106                 // Open the inset, and move the current selection
2107                 // inside it.
2108                 bool const sel = cur.selection();
2109                 doInsertInset(cur, this, cmd, true, true);
2110                 // Insert auto-insert arguments
2111                 bool autoargs = false, inautoarg = false;
2112                 Layout::LaTeXArgMap args = cur.inset().getLayout().args();
2113                 for (auto const & argt : args) {
2114                         Layout::latexarg arg = argt.second;
2115                         if (!inautoarg && arg.insertonnewline && cur.pos() > 0) {
2116                                 FuncRequest cmd2(LFUN_PARAGRAPH_BREAK);
2117                                 lyx::dispatch(cmd2);
2118                         }
2119                         if (arg.autoinsert) {
2120                                 // The cursor might have been invalidated by the replaceSelection.
2121                                 cur.buffer()->changed(true);
2122                                 // If we had already inserted an arg automatically,
2123                                 // leave this now in order to insert the next one.
2124                                 if (inautoarg) {
2125                                         cur.leaveInset(cur.inset());
2126                                         cur.posForward();
2127                                         if (arg.insertonnewline && cur.pos() > 0) {
2128                                                 FuncRequest cmd2(LFUN_PARAGRAPH_BREAK);
2129                                                 lyx::dispatch(cmd2);
2130                                         }
2131                                 }
2132                                 FuncRequest cmd2(LFUN_ARGUMENT_INSERT, argt.first);
2133                                 lyx::dispatch(cmd2);
2134                                 autoargs = true;
2135                                 inautoarg = true;
2136                         }
2137                 }
2138                 if (!autoargs) {
2139                         if (sel)
2140                                 cur.leaveInset(cur.inset());
2141                         cur.posForward();
2142                 }
2143                 // Some insets are numbered, others are shown in the outline pane so
2144                 // let's update the labels and the toc backend.
2145                 cur.forceBufferUpdate();
2146                 break;
2147         }
2148
2149         case LFUN_TABULAR_INSERT: {
2150                 // if there were no arguments, just open the dialog
2151                 if (cmd.argument().empty()) {
2152                         bv->showDialog("tabularcreate");
2153                         break;
2154                 } else if (cur.buffer()->masterParams().tablestyle != "default"
2155                            || bv->buffer().params().documentClass().tablestyle() != "default") {
2156                         string tabstyle = cur.buffer()->masterParams().tablestyle;
2157                         if (tabstyle == "default")
2158                                 tabstyle = bv->buffer().params().documentClass().tablestyle();
2159                         if (!libFileSearch("tabletemplates", tabstyle + ".lyx").empty()) {
2160                                 FuncRequest fr(LFUN_TABULAR_STYLE_INSERT,
2161                                                tabstyle + " " + to_ascii(cmd.argument()));
2162                                 lyx::dispatch(fr);
2163                                 break;
2164                         } else
2165                                 // Unknown style. Report and fall back to default.
2166                                 cur.errorMessage(from_utf8(N_("Table Style ")) + from_utf8(tabstyle) +
2167                                                      from_utf8(N_(" not known")));
2168                 }
2169                 if (doInsertInset(cur, this, cmd, false, true))
2170                         cur.posForward();
2171                 break;
2172         }
2173
2174         case LFUN_TABULAR_STYLE_INSERT: {
2175                 string const style = cmd.getArg(0);
2176                 string const rows = cmd.getArg(1);
2177                 string const cols = cmd.getArg(2);
2178                 if (cols.empty() || !isStrInt(cols)
2179                     || rows.empty() || !isStrInt(rows))
2180                         break;
2181                 int const r = convert<int>(rows);
2182                 int const c = convert<int>(cols);
2183
2184                 string suffix;
2185                 if (r == 1)
2186                         suffix = "_1x1";
2187                 else if (r == 2)
2188                         suffix = "_1x2";
2189                 FileName const tabstyle = libFileSearch("tabletemplates",
2190                                                         style + suffix + ".lyx", "lyx");
2191                 if (tabstyle.empty())
2192                             break;
2193                 UndoGroupHelper ugh(cur.buffer());
2194                 cur.recordUndo();
2195                 FuncRequest cmd2(LFUN_FILE_INSERT, tabstyle.absFileName() + " ignorelang");
2196                 lyx::dispatch(cmd2);
2197                 // go into table
2198                 cur.backwardPos();
2199                 if (r > 2) {
2200                         // move one cell up to middle cell
2201                         cur.up();
2202                         // add the missing rows
2203                         int const addrows = r - 3;
2204                         for (int i = 0 ; i < addrows ; ++i) {
2205                                 FuncRequest fr(LFUN_TABULAR_FEATURE, "append-row");
2206                                 lyx::dispatch(fr);
2207                         }
2208                 }
2209                 // add the missing columns
2210                 int const addcols = c - 1;
2211                 for (int i = 0 ; i < addcols ; ++i) {
2212                         FuncRequest fr(LFUN_TABULAR_FEATURE, "append-column");
2213                         lyx::dispatch(fr);
2214                 }
2215                 if (r > 1)
2216                         // go to first cell
2217                         cur.up();
2218                 break;
2219         }
2220
2221         case LFUN_FLOAT_INSERT:
2222         case LFUN_FLOAT_WIDE_INSERT:
2223         case LFUN_WRAP_INSERT: {
2224                 // will some content be moved into the inset?
2225                 bool const content = cur.selection();
2226                 // does the content consist of multiple paragraphs?
2227                 bool const singlepar = (cur.selBegin().pit() == cur.selEnd().pit());
2228
2229                 doInsertInset(cur, this, cmd, true, true);
2230                 cur.posForward();
2231
2232                 // If some single-par content is moved into the inset,
2233                 // doInsertInset puts the cursor outside the inset.
2234                 // To insert the caption we put it back into the inset.
2235                 // FIXME cleanup doInsertInset to avoid such dances!
2236                 if (content && singlepar)
2237                         cur.backwardPos();
2238
2239                 ParagraphList & pars = cur.text()->paragraphs();
2240
2241                 DocumentClass const & tclass = bv->buffer().params().documentClass();
2242
2243                 // add a separate paragraph for the caption inset
2244                 pars.push_back(Paragraph());
2245                 pars.back().setInsetOwner(&cur.text()->inset());
2246                 pars.back().setPlainOrDefaultLayout(tclass);
2247                 int cap_pit = pars.size() - 1;
2248
2249                 // if an empty inset was created, we create an additional empty
2250                 // paragraph at the bottom so that the user can choose where to put
2251                 // the graphics (or table).
2252                 if (!content) {
2253                         pars.push_back(Paragraph());
2254                         pars.back().setInsetOwner(&cur.text()->inset());
2255                         pars.back().setPlainOrDefaultLayout(tclass);
2256                 }
2257
2258                 // reposition the cursor to the caption
2259                 cur.pit() = cap_pit;
2260                 cur.pos() = 0;
2261                 // FIXME: This Text/Cursor dispatch handling is a mess!
2262                 // We cannot use Cursor::dispatch here it needs access to up to
2263                 // date metrics.
2264                 FuncRequest cmd_caption(LFUN_CAPTION_INSERT);
2265                 doInsertInset(cur, cur.text(), cmd_caption, true, false);
2266                 cur.forceBufferUpdate();
2267                 cur.screenUpdateFlags(Update::Force);
2268                 // FIXME: When leaving the Float (or Wrap) inset we should
2269                 // delete any empty paragraph left above or below the
2270                 // caption.
2271                 break;
2272         }
2273
2274         case LFUN_NOMENCL_INSERT: {
2275                 InsetCommandParams p(NOMENCL_CODE);
2276                 if (cmd.argument().empty()) {
2277                         p["symbol"] =
2278                                 bv->cursor().innerText()->getStringForDialog(bv->cursor());
2279                         cur.clearSelection();
2280                 } else
2281                         p["symbol"] = cmd.argument();
2282                 string const data = InsetCommand::params2string(p);
2283                 bv->showDialog("nomenclature", data);
2284                 break;
2285         }
2286
2287         case LFUN_INDEX_PRINT: {
2288                 InsetCommandParams p(INDEX_PRINT_CODE);
2289                 if (cmd.argument().empty())
2290                         p["type"] = from_ascii("idx");
2291                 else
2292                         p["type"] = cmd.argument();
2293                 string const data = InsetCommand::params2string(p);
2294                 FuncRequest fr(LFUN_INSET_INSERT, data);
2295                 dispatch(cur, fr);
2296                 break;
2297         }
2298
2299         case LFUN_NOMENCL_PRINT:
2300         case LFUN_NEWPAGE_INSERT:
2301                 // do nothing fancy
2302                 doInsertInset(cur, this, cmd, false, false);
2303                 cur.posForward();
2304                 break;
2305
2306         case LFUN_SEPARATOR_INSERT: {
2307                 doInsertInset(cur, this, cmd, false, false);
2308                 cur.posForward();
2309                 // remove a following space
2310                 Paragraph & par = cur.paragraph();
2311                 if (cur.pos() != cur.lastpos() && par.isLineSeparator(cur.pos()))
2312                     par.eraseChar(cur.pos(), cur.buffer()->params().track_changes);
2313                 break;
2314         }
2315
2316         case LFUN_DEPTH_DECREMENT:
2317                 changeDepth(cur, DEC_DEPTH);
2318                 break;
2319
2320         case LFUN_DEPTH_INCREMENT:
2321                 changeDepth(cur, INC_DEPTH);
2322                 break;
2323
2324         case LFUN_REGEXP_MODE:
2325                 regexpDispatch(cur, cmd);
2326                 break;
2327
2328         case LFUN_MATH_MODE: {
2329                 if (cmd.argument() == "on" || cmd.argument() == "") {
2330                         // don't pass "on" as argument
2331                         // (it would appear literally in the first cell)
2332                         docstring sel = cur.selectionAsString(false);
2333                         InsetMathMacroTemplate * macro = new InsetMathMacroTemplate(cur.buffer());
2334                         // create a macro template if we see "\\newcommand" somewhere, and
2335                         // an ordinary formula otherwise
2336                         if (!sel.empty()
2337                                 && (sel.find(from_ascii("\\newcommand")) != string::npos
2338                                         || sel.find(from_ascii("\\newlyxcommand")) != string::npos
2339                                         || sel.find(from_ascii("\\def")) != string::npos)
2340                                 && macro->fromString(sel)) {
2341                                 cur.recordUndo();
2342                                 replaceSelection(cur);
2343                                 cur.insert(macro);
2344                         } else {
2345                                 // no meaningful macro template was found
2346                                 delete macro;
2347                                 mathDispatch(cur,FuncRequest(LFUN_MATH_MODE));
2348                         }
2349                 } else
2350                         // The argument is meaningful
2351                         // We replace cmd with LFUN_MATH_INSERT because LFUN_MATH_MODE
2352                         // has a different meaning in math mode
2353                         mathDispatch(cur, FuncRequest(LFUN_MATH_INSERT,cmd.argument()));
2354                 break;
2355         }
2356
2357         case LFUN_MATH_MACRO:
2358                 if (cmd.argument().empty())
2359                         cur.errorMessage(from_utf8(N_("Missing argument")));
2360                 else {
2361                         cur.recordUndo();
2362                         string s = to_utf8(cmd.argument());
2363                         string const s1 = token(s, ' ', 1);
2364                         int const nargs = s1.empty() ? 0 : convert<int>(s1);
2365                         string const s2 = token(s, ' ', 2);
2366                         MacroType type = MacroTypeNewcommand;
2367                         if (s2 == "def")
2368                                 type = MacroTypeDef;
2369                         InsetMathMacroTemplate * inset = new InsetMathMacroTemplate(cur.buffer(),
2370                                 from_utf8(token(s, ' ', 0)), nargs, false, type);
2371                         inset->setBuffer(bv->buffer());
2372                         insertInset(cur, inset);
2373
2374                         // enter macro inset and select the name
2375                         cur.push(*inset);
2376                         cur.top().pos() = cur.top().lastpos();
2377                         cur.resetAnchor();
2378                         cur.selection(true);
2379                         cur.top().pos() = 0;
2380                 }
2381                 break;
2382
2383         case LFUN_MATH_DISPLAY:
2384         case LFUN_MATH_SUBSCRIPT:
2385         case LFUN_MATH_SUPERSCRIPT:
2386         case LFUN_MATH_INSERT:
2387         case LFUN_MATH_AMS_MATRIX:
2388         case LFUN_MATH_MATRIX:
2389         case LFUN_MATH_DELIM:
2390         case LFUN_MATH_BIGDELIM:
2391                 mathDispatch(cur, cmd);
2392                 break;
2393
2394         case LFUN_FONT_EMPH: {
2395                 Font font(ignore_font, ignore_language);
2396                 font.fontInfo().setEmph(FONT_TOGGLE);
2397                 toggleAndShow(cur, this, font);
2398                 break;
2399         }
2400
2401         case LFUN_FONT_ITAL: {
2402                 Font font(ignore_font, ignore_language);
2403                 font.fontInfo().setShape(ITALIC_SHAPE);
2404                 toggleAndShow(cur, this, font);
2405                 break;
2406         }
2407
2408         case LFUN_FONT_BOLD:
2409         case LFUN_FONT_BOLDSYMBOL: {
2410                 Font font(ignore_font, ignore_language);
2411                 font.fontInfo().setSeries(BOLD_SERIES);
2412                 toggleAndShow(cur, this, font);
2413                 break;
2414         }
2415
2416         case LFUN_FONT_NOUN: {
2417                 Font font(ignore_font, ignore_language);
2418                 font.fontInfo().setNoun(FONT_TOGGLE);
2419                 toggleAndShow(cur, this, font);
2420                 break;
2421         }
2422
2423         case LFUN_FONT_TYPEWRITER: {
2424                 Font font(ignore_font, ignore_language);
2425                 font.fontInfo().setFamily(TYPEWRITER_FAMILY); // no good
2426                 toggleAndShow(cur, this, font);
2427                 break;
2428         }
2429
2430         case LFUN_FONT_SANS: {
2431                 Font font(ignore_font, ignore_language);
2432                 font.fontInfo().setFamily(SANS_FAMILY);
2433                 toggleAndShow(cur, this, font);
2434                 break;
2435         }
2436
2437         case LFUN_FONT_ROMAN: {
2438                 Font font(ignore_font, ignore_language);
2439                 font.fontInfo().setFamily(ROMAN_FAMILY);
2440                 toggleAndShow(cur, this, font);
2441                 break;
2442         }
2443
2444         case LFUN_FONT_DEFAULT: {
2445                 Font font(inherit_font, ignore_language);
2446                 toggleAndShow(cur, this, font);
2447                 break;
2448         }
2449
2450         case LFUN_FONT_STRIKEOUT: {
2451                 Font font(ignore_font, ignore_language);
2452                 font.fontInfo().setStrikeout(FONT_TOGGLE);
2453                 toggleAndShow(cur, this, font);
2454                 break;
2455         }
2456
2457         case LFUN_FONT_CROSSOUT: {
2458                 Font font(ignore_font, ignore_language);
2459                 font.fontInfo().setXout(FONT_TOGGLE);
2460                 toggleAndShow(cur, this, font);
2461                 break;
2462         }
2463
2464         case LFUN_FONT_UNDERUNDERLINE: {
2465                 Font font(ignore_font, ignore_language);
2466                 font.fontInfo().setUuline(FONT_TOGGLE);
2467                 toggleAndShow(cur, this, font);
2468                 break;
2469         }
2470
2471         case LFUN_FONT_UNDERWAVE: {
2472                 Font font(ignore_font, ignore_language);
2473                 font.fontInfo().setUwave(FONT_TOGGLE);
2474                 toggleAndShow(cur, this, font);
2475                 break;
2476         }
2477
2478         case LFUN_FONT_UNDERLINE: {
2479                 Font font(ignore_font, ignore_language);
2480                 font.fontInfo().setUnderbar(FONT_TOGGLE);
2481                 toggleAndShow(cur, this, font);
2482                 break;
2483         }
2484
2485         case LFUN_FONT_SIZE: {
2486                 Font font(ignore_font, ignore_language);
2487                 setLyXSize(to_utf8(cmd.argument()), font.fontInfo());
2488                 toggleAndShow(cur, this, font);
2489                 break;
2490         }
2491
2492         case LFUN_LANGUAGE: {
2493                 string const lang_arg = cmd.getArg(0);
2494                 bool const reset = (lang_arg.empty() || lang_arg == "reset");
2495                 Language const * lang =
2496                         reset ? reset_language
2497                               : languages.getLanguage(lang_arg);
2498                 // we allow reset_language, which is 0, but only if it
2499                 // was requested via empty or "reset" arg.
2500                 if (!lang && !reset)
2501                         break;
2502                 bool const toggle = (cmd.getArg(1) != "set");
2503                 selectWordWhenUnderCursor(cur, WHOLE_WORD_STRICT);
2504                 Font font(ignore_font, lang);
2505                 toggleAndShow(cur, this, font, toggle);
2506                 // We need a buffer update if we change the language
2507                 // of an info inset
2508                 if (cur.insetInSelection(INFO_CODE))
2509                         cur.forceBufferUpdate();
2510                 break;
2511         }
2512
2513         case LFUN_TEXTSTYLE_APPLY: {
2514                 unsigned int num = 0;
2515                 string const arg = to_utf8(cmd.argument());
2516                 // Argument?
2517                 if (!arg.empty()) {
2518                         if (isStrUnsignedInt(arg)) {
2519                                 num = convert<uint>(arg);
2520                                 if (num >= freeFonts.size()) {
2521                                         cur.message(_("Invalid argument (number exceeds stack size)!"));
2522                                         break;
2523                                 }
2524                         } else {
2525                                 cur.message(_("Invalid argument (must be a non-negative number)!"));
2526                                 break;
2527                         }
2528                 }
2529                 toggleAndShow(cur, this, freeFonts[num].second, toggleall);
2530                 cur.message(bformat(_("Text properties applied: %1$s"), freeFonts[num].first));
2531                 break;
2532         }
2533
2534         // Set the freefont using the contents of \param data dispatched from
2535         // the frontends and apply it at the current cursor location.
2536         case LFUN_TEXTSTYLE_UPDATE: {
2537                 Font font(ignore_font, ignore_language);
2538                 bool toggle;
2539                 if (font.fromString(to_utf8(cmd.argument()), toggle)) {
2540                         docstring const props = font.stateText(&bv->buffer().params(), true);
2541                         freeFonts.push(make_pair(props, font));
2542                         toggleall = toggle;
2543                         toggleAndShow(cur, this, font, toggleall);
2544                         // We need a buffer update if we change the language
2545                         // of an info inset
2546                         if (cur.insetInSelection(INFO_CODE))
2547                                 cur.forceBufferUpdate();
2548                         cur.message(bformat(_("Text properties applied: %1$s"), props));
2549                 } else
2550                         LYXERR0("Invalid argument of textstyle-update");
2551                 break;
2552         }
2553
2554         case LFUN_FINISHED_LEFT:
2555                 LYXERR(Debug::DEBUG, "handle LFUN_FINISHED_LEFT:\n" << cur);
2556                 // We're leaving an inset, going left. If the inset is LTR, we're
2557                 // leaving from the front, so we should not move (remain at --- but
2558                 // not in --- the inset). If the inset is RTL, move left, without
2559                 // entering the inset itself; i.e., move to after the inset.
2560                 if (cur.paragraph().getFontSettings(
2561                                 cur.bv().buffer().params(), cur.pos()).isRightToLeft())
2562                         cursorVisLeft(cur, true);
2563                 break;
2564
2565         case LFUN_FINISHED_RIGHT:
2566                 LYXERR(Debug::DEBUG, "handle LFUN_FINISHED_RIGHT:\n" << cur);
2567                 // We're leaving an inset, going right. If the inset is RTL, we're
2568                 // leaving from the front, so we should not move (remain at --- but
2569                 // not in --- the inset). If the inset is LTR, move right, without
2570                 // entering the inset itself; i.e., move to after the inset.
2571                 if (!cur.paragraph().getFontSettings(
2572                                 cur.bv().buffer().params(), cur.pos()).isRightToLeft())
2573                         cursorVisRight(cur, true);
2574                 break;
2575
2576         case LFUN_FINISHED_BACKWARD:
2577                 LYXERR(Debug::DEBUG, "handle LFUN_FINISHED_BACKWARD:\n" << cur);
2578                 cur.setCurrentFont();
2579                 break;
2580
2581         case LFUN_FINISHED_FORWARD:
2582                 LYXERR(Debug::DEBUG, "handle LFUN_FINISHED_FORWARD:\n" << cur);
2583                 ++cur.pos();
2584                 cur.setCurrentFont();
2585                 break;
2586
2587         case LFUN_LAYOUT_PARAGRAPH: {
2588                 string data;
2589                 params2string(cur.paragraph(), data);
2590                 data = "show\n" + data;
2591                 bv->showDialog("paragraph", data);
2592                 break;
2593         }
2594
2595         case LFUN_PARAGRAPH_UPDATE: {
2596                 string data;
2597                 params2string(cur.paragraph(), data);
2598
2599                 // Will the paragraph accept changes from the dialog?
2600                 bool const accept =
2601                         cur.inset().allowParagraphCustomization(cur.idx());
2602
2603                 data = "update " + convert<string>(accept) + '\n' + data;
2604                 bv->updateDialog("paragraph", data);
2605                 break;
2606         }
2607
2608         case LFUN_ACCENT_UMLAUT:
2609         case LFUN_ACCENT_CIRCUMFLEX:
2610         case LFUN_ACCENT_GRAVE:
2611         case LFUN_ACCENT_ACUTE:
2612         case LFUN_ACCENT_TILDE:
2613         case LFUN_ACCENT_PERISPOMENI:
2614         case LFUN_ACCENT_CEDILLA:
2615         case LFUN_ACCENT_MACRON:
2616         case LFUN_ACCENT_DOT:
2617         case LFUN_ACCENT_UNDERDOT:
2618         case LFUN_ACCENT_UNDERBAR:
2619         case LFUN_ACCENT_CARON:
2620         case LFUN_ACCENT_BREVE:
2621         case LFUN_ACCENT_TIE:
2622         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
2623         case LFUN_ACCENT_CIRCLE:
2624         case LFUN_ACCENT_OGONEK:
2625                 theApp()->handleKeyFunc(cmd.action());
2626                 if (!cmd.argument().empty())
2627                         // FIXME: Are all these characters encoded in one byte in utf8?
2628                         bv->translateAndInsert(cmd.argument()[0], this, cur);
2629                 cur.screenUpdateFlags(Update::FitCursor);
2630                 break;
2631
2632         case LFUN_FLOAT_LIST_INSERT: {
2633                 DocumentClass const & tclass = bv->buffer().params().documentClass();
2634                 if (tclass.floats().typeExist(to_utf8(cmd.argument()))) {
2635                         cur.recordUndo();
2636                         if (cur.selection())
2637                                 cutSelection(cur, false);
2638                         breakParagraph(cur);
2639
2640                         if (cur.lastpos() != 0) {
2641                                 cursorBackward(cur);
2642                                 breakParagraph(cur);
2643                         }
2644
2645                         docstring const laystr = cur.inset().usePlainLayout() ?
2646                                 tclass.plainLayoutName() :
2647                                 tclass.defaultLayoutName();
2648                         setLayout(cur, laystr);
2649                         ParagraphParameters p;
2650                         // FIXME If this call were replaced with one to clearParagraphParams(),
2651                         // then we could get rid of this method altogether.
2652                         setParagraphs(cur, p);
2653                         // FIXME This should be simplified when InsetFloatList takes a
2654                         // Buffer in its constructor.
2655                         InsetFloatList * ifl = new InsetFloatList(cur.buffer(), to_utf8(cmd.argument()));
2656                         ifl->setBuffer(bv->buffer());
2657                         insertInset(cur, ifl);
2658                         cur.posForward();
2659                 } else {
2660                         lyxerr << "Non-existent float type: "
2661                                << to_utf8(cmd.argument()) << endl;
2662                 }
2663                 break;
2664         }
2665
2666         case LFUN_CHANGE_ACCEPT: {
2667                 acceptOrRejectChanges(cur, ACCEPT);
2668                 break;
2669         }
2670
2671         case LFUN_CHANGE_REJECT: {
2672                 acceptOrRejectChanges(cur, REJECT);
2673                 break;
2674         }
2675
2676         case LFUN_THESAURUS_ENTRY: {
2677                 Language const * language = cur.getFont().language();
2678                 docstring arg = cmd.argument();
2679                 if (arg.empty()) {
2680                         arg = cur.selectionAsString(false);
2681                         // FIXME
2682                         if (arg.size() > 100 || arg.empty()) {
2683                                 // Get word or selection
2684                                 selectWordWhenUnderCursor(cur, WHOLE_WORD);
2685                                 arg = cur.selectionAsString(false);
2686                                 arg += " lang=" + from_ascii(language->lang());
2687                         }
2688                 } else {
2689                         string lang = cmd.getArg(1);
2690                         // This duplicates the code in GuiThesaurus::initialiseParams
2691                         if (prefixIs(lang, "lang=")) {
2692                                 language = languages.getLanguage(lang.substr(5));
2693                                 if (!language)
2694                                         language = cur.getFont().language();
2695                         }
2696                 }
2697                 string lang = language->code();
2698                 if (lyxrc.thesaurusdir_path.empty() && !thesaurus.thesaurusInstalled(from_ascii(lang))) {
2699                         LYXERR(Debug::ACTION, "Command " << cmd << ". Thesaurus not found for language " << lang);
2700                         frontend::Alert::warning(_("Path to thesaurus directory not set!"),
2701                                         _("The path to the thesaurus directory has not been specified.\n"
2702                                           "The thesaurus is not functional.\n"
2703                                           "Please refer to sec. 6.15.1 of the User's Guide for setup\n"
2704                                           "instructions."));
2705                 }
2706                 bv->showDialog("thesaurus", to_utf8(arg));
2707                 break;
2708         }
2709
2710         case LFUN_SPELLING_ADD: {
2711                 Language const * language = getLanguage(cur, cmd.getArg(1));
2712                 docstring word = from_utf8(cmd.getArg(0));
2713                 if (word.empty()) {
2714                         word = cur.selectionAsString(false);
2715                         // FIXME
2716                         if (word.size() > 100 || word.empty()) {
2717                                 // Get word or selection
2718                                 selectWordWhenUnderCursor(cur, WHOLE_WORD);
2719                                 word = cur.selectionAsString(false);
2720                         }
2721                 }
2722                 WordLangTuple wl(word, language);
2723                 theSpellChecker()->insert(wl);
2724                 break;
2725         }
2726
2727         case LFUN_SPELLING_IGNORE: {
2728                 Language const * language = getLanguage(cur, cmd.getArg(1));
2729                 docstring word = from_utf8(cmd.getArg(0));
2730                 if (word.empty()) {
2731                         word = cur.selectionAsString(false);
2732                         // FIXME
2733                         if (word.size() > 100 || word.empty()) {
2734                                 // Get word or selection
2735                                 selectWordWhenUnderCursor(cur, WHOLE_WORD);
2736                                 word = cur.selectionAsString(false);
2737                         }
2738                 }
2739                 WordLangTuple wl(word, language);
2740                 theSpellChecker()->accept(wl);
2741                 break;
2742         }
2743
2744         case LFUN_SPELLING_REMOVE: {
2745                 Language const * language = getLanguage(cur, cmd.getArg(1));
2746                 docstring word = from_utf8(cmd.getArg(0));
2747                 if (word.empty()) {
2748                         word = cur.selectionAsString(false);
2749                         // FIXME
2750                         if (word.size() > 100 || word.empty()) {
2751                                 // Get word or selection
2752                                 selectWordWhenUnderCursor(cur, WHOLE_WORD);
2753                                 word = cur.selectionAsString(false);
2754                         }
2755                 }
2756                 WordLangTuple wl(word, language);
2757                 theSpellChecker()->remove(wl);
2758                 break;
2759         }
2760
2761         case LFUN_PARAGRAPH_PARAMS_APPLY: {
2762                 // Given data, an encoding of the ParagraphParameters
2763                 // generated in the Paragraph dialog, this function sets
2764                 // the current paragraph, or currently selected paragraphs,
2765                 // appropriately.
2766                 // NOTE: This function overrides all existing settings.
2767                 setParagraphs(cur, cmd.argument());
2768                 cur.message(_("Paragraph layout set"));
2769                 break;
2770         }
2771
2772         case LFUN_PARAGRAPH_PARAMS: {
2773                 // Given data, an encoding of the ParagraphParameters as we'd
2774                 // find them in a LyX file, this function modifies the current paragraph,
2775                 // or currently selected paragraphs.
2776                 // NOTE: This function only modifies, and does not override, existing
2777                 // settings.
2778                 setParagraphs(cur, cmd.argument(), true);
2779                 cur.message(_("Paragraph layout set"));
2780                 break;
2781         }
2782
2783         case LFUN_ESCAPE:
2784                 if (cur.selection()) {
2785                         cur.selection(false);
2786                 } else {
2787                         cur.undispatched();
2788                         // This used to be LFUN_FINISHED_RIGHT, I think FORWARD is more
2789                         // correct, but I'm not 100% sure -- dov, 071019
2790                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
2791                 }
2792                 break;
2793
2794         case LFUN_OUTLINE_UP: {
2795                 pos_type const opos = cur.pos();
2796                 outline(OutlineUp, cur, this);
2797                 setCursor(cur, cur.pit(), opos);
2798                 cur.forceBufferUpdate();
2799                 needsUpdate = true;
2800                 break;
2801         }
2802
2803         case LFUN_OUTLINE_DOWN: {
2804                 pos_type const opos = cur.pos();
2805                 outline(OutlineDown, cur, this);
2806                 setCursor(cur, cur.pit(), opos);
2807                 cur.forceBufferUpdate();
2808                 needsUpdate = true;
2809                 break;
2810         }
2811
2812         case LFUN_OUTLINE_IN:
2813                 outline(OutlineIn, cur, this);
2814                 cur.forceBufferUpdate();
2815                 needsUpdate = true;
2816                 break;
2817
2818         case LFUN_OUTLINE_OUT:
2819                 outline(OutlineOut, cur, this);
2820                 cur.forceBufferUpdate();
2821                 needsUpdate = true;
2822                 break;
2823
2824         case LFUN_SERVER_GET_STATISTICS:
2825                 {
2826                         DocIterator from, to;
2827                         if (cur.selection()) {
2828                                 from = cur.selectionBegin();
2829                                 to = cur.selectionEnd();
2830                         } else {
2831                                 from = doc_iterator_begin(cur.buffer());
2832                                 to = doc_iterator_end(cur.buffer());
2833                         }
2834
2835                         cur.buffer()->updateStatistics(from, to);
2836                         string const arg0 = cmd.getArg(0);
2837                         if (arg0 == "words") {
2838                                 cur.message(convert<docstring>(cur.buffer()->wordCount()));
2839                         } else if (arg0 == "chars") {
2840                                 cur.message(convert<docstring>(cur.buffer()->charCount(false)));
2841                         } else if (arg0 == "chars-space") {
2842                                 cur.message(convert<docstring>(cur.buffer()->charCount(true)));
2843                         } else {
2844                                 cur.message(convert<docstring>(cur.buffer()->wordCount()) + " "
2845                                 + convert<docstring>(cur.buffer()->charCount(false)) + " "
2846                                 + convert<docstring>(cur.buffer()->charCount(true)));
2847                         }
2848                 }
2849                 break;
2850
2851         default:
2852                 LYXERR(Debug::ACTION, "Command " << cmd << " not DISPATCHED by Text");
2853                 cur.undispatched();
2854                 break;
2855         }
2856
2857         needsUpdate |= (cur.pos() != cur.lastpos()) && cur.selection();
2858
2859         if (lyxrc.spellcheck_continuously && !needsUpdate) {
2860                 // Check for misspelled text
2861                 // The redraw is useful because of the painting of
2862                 // misspelled markers depends on the cursor position.
2863                 // Trigger a redraw for cursor moves inside misspelled text.
2864                 if (!cur.inTexted()) {
2865                         // move from regular text to math
2866                         needsUpdate = last_misspelled;
2867                 } else if (oldTopSlice != cur.top() || oldBoundary != cur.boundary()) {
2868                         // move inside regular text
2869                         needsUpdate = last_misspelled
2870                                 || cur.paragraph().isMisspelled(cur.pos(), true);
2871                 }
2872         }
2873
2874         // FIXME: The cursor flag is reset two lines below
2875         // so we need to check here if some of the LFUN did touch that.
2876         // for now only Text::erase() and Text::backspace() do that.
2877         // The plan is to verify all the LFUNs and then to remove this
2878         // singleParUpdate boolean altogether.
2879         if (cur.result().screenUpdate() & Update::Force) {
2880                 singleParUpdate = false;
2881                 needsUpdate = true;
2882         }
2883
2884         // FIXME: the following code should go in favor of fine grained
2885         // update flag treatment.
2886         if (singleParUpdate) {
2887                 // Inserting characters does not change par height in general. So, try
2888                 // to update _only_ this paragraph. BufferView will detect if a full
2889                 // metrics update is needed anyway.
2890                 cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
2891                 return;
2892         }
2893         if (!needsUpdate
2894             && &oldTopSlice.inset() == &cur.inset()
2895             && oldTopSlice.idx() == cur.idx()
2896             && !oldSelection // oldSelection is a backup of cur.selection() at the beginning of the function.
2897             && !cur.selection())
2898                 // FIXME: it would be better if we could just do this
2899                 //
2900                 //if (cur.result().update() != Update::FitCursor)
2901                 //      cur.noScreenUpdate();
2902                 //
2903                 // But some LFUNs do not set Update::FitCursor when needed, so we
2904                 // do it for all. This is not very harmfull as FitCursor will provoke
2905                 // a full redraw only if needed but still, a proper review of all LFUN
2906                 // should be done and this needsUpdate boolean can then be removed.
2907                 cur.screenUpdateFlags(Update::FitCursor);
2908         else
2909                 cur.screenUpdateFlags(Update::Force | Update::FitCursor);
2910 }
2911
2912
2913 bool Text::getStatus(Cursor & cur, FuncRequest const & cmd,
2914                         FuncStatus & status) const
2915 {
2916         LBUFERR(this == cur.text());
2917
2918         FontInfo const & fontinfo = cur.real_current_font.fontInfo();
2919         bool enable = true;
2920         bool allow_in_passthru = false;
2921         InsetCode code = NO_CODE;
2922
2923         switch (cmd.action()) {
2924
2925         case LFUN_DEPTH_DECREMENT:
2926                 enable = changeDepthAllowed(cur, DEC_DEPTH);
2927                 break;
2928
2929         case LFUN_DEPTH_INCREMENT:
2930                 enable = changeDepthAllowed(cur, INC_DEPTH);
2931                 break;
2932
2933         case LFUN_APPENDIX:
2934                 // FIXME We really should not allow this to be put, e.g.,
2935                 // in a footnote, or in ERT. But it would make sense in a
2936                 // branch, so I'm not sure what to do.
2937                 status.setOnOff(cur.paragraph().params().startOfAppendix());
2938                 break;
2939
2940         case LFUN_DIALOG_SHOW_NEW_INSET:
2941                 if (cmd.argument() == "bibitem")
2942                         code = BIBITEM_CODE;
2943                 else if (cmd.argument() == "bibtex") {
2944                         code = BIBTEX_CODE;
2945                         // not allowed in description items
2946                         enable = !inDescriptionItem(cur);
2947                 }
2948                 else if (cmd.argument() == "box")
2949                         code = BOX_CODE;
2950                 else if (cmd.argument() == "branch")
2951                         code = BRANCH_CODE;
2952                 else if (cmd.argument() == "citation")
2953                         code = CITE_CODE;
2954                 else if (cmd.argument() == "ert")
2955                         code = ERT_CODE;
2956                 else if (cmd.argument() == "external")
2957                         code = EXTERNAL_CODE;
2958                 else if (cmd.argument() == "float")
2959                         code = FLOAT_CODE;
2960                 else if (cmd.argument() == "graphics")
2961                         code = GRAPHICS_CODE;
2962                 else if (cmd.argument() == "href")
2963                         code = HYPERLINK_CODE;
2964                 else if (cmd.argument() == "include")
2965                         code = INCLUDE_CODE;
2966                 else if (cmd.argument() == "index")
2967                         code = INDEX_CODE;
2968                 else if (cmd.argument() == "index_print")
2969                         code = INDEX_PRINT_CODE;
2970                 else if (cmd.argument() == "listings")
2971                         code = LISTINGS_CODE;
2972                 else if (cmd.argument() == "mathspace")
2973                         code = MATH_HULL_CODE;
2974                 else if (cmd.argument() == "nomenclature")
2975                         code = NOMENCL_CODE;
2976                 else if (cmd.argument() == "nomencl_print")
2977                         code = NOMENCL_PRINT_CODE;
2978                 else if (cmd.argument() == "label")
2979                         code = LABEL_CODE;
2980                 else if (cmd.argument() == "line")
2981                         code = LINE_CODE;
2982                 else if (cmd.argument() == "note")
2983                         code = NOTE_CODE;
2984                 else if (cmd.argument() == "phantom")
2985                         code = PHANTOM_CODE;
2986                 else if (cmd.argument() == "ref")
2987                         code = REF_CODE;
2988                 else if (cmd.argument() == "space")
2989                         code = SPACE_CODE;
2990                 else if (cmd.argument() == "toc")
2991                         code = TOC_CODE;
2992                 else if (cmd.argument() == "vspace")
2993                         code = VSPACE_CODE;
2994                 else if (cmd.argument() == "wrap")
2995                         code = WRAP_CODE;
2996                 break;
2997
2998         case LFUN_ERT_INSERT:
2999                 code = ERT_CODE;
3000                 break;
3001         case LFUN_LISTING_INSERT:
3002                 code = LISTINGS_CODE;
3003                 // not allowed in description items
3004                 enable = !inDescriptionItem(cur);
3005                 break;
3006         case LFUN_FOOTNOTE_INSERT:
3007                 code = FOOT_CODE;
3008                 break;
3009         case LFUN_TABULAR_INSERT:
3010                 code = TABULAR_CODE;
3011                 break;
3012         case LFUN_TABULAR_STYLE_INSERT:
3013                 code = TABULAR_CODE;
3014                 break;
3015         case LFUN_MARGINALNOTE_INSERT:
3016                 code = MARGIN_CODE;
3017                 break;
3018         case LFUN_FLOAT_INSERT:
3019         case LFUN_FLOAT_WIDE_INSERT:
3020                 // FIXME: If there is a selection, we should check whether there
3021                 // are floats in the selection, but this has performance issues, see
3022                 // LFUN_CHANGE_ACCEPT/REJECT.
3023                 code = FLOAT_CODE;
3024                 if (inDescriptionItem(cur))
3025                         // not allowed in description items
3026                         enable = false;
3027                 else {
3028                         InsetCode const inset_code = cur.inset().lyxCode();
3029
3030                         // algorithm floats cannot be put in another float
3031                         if (to_utf8(cmd.argument()) == "algorithm") {
3032                                 enable = inset_code != WRAP_CODE && inset_code != FLOAT_CODE;
3033                                 break;
3034                         }
3035
3036                         // for figures and tables: only allow in another
3037                         // float or wrap if it is of the same type and
3038                         // not a subfloat already
3039                         if(cur.inset().lyxCode() == code) {
3040                                 InsetFloat const & ins =
3041                                         static_cast<InsetFloat const &>(cur.inset());
3042                                 enable = ins.params().type == to_utf8(cmd.argument())
3043                                         && !ins.params().subfloat;
3044                         } else if(cur.inset().lyxCode() == WRAP_CODE) {
3045                                 InsetWrap const & ins =
3046                                         static_cast<InsetWrap const &>(cur.inset());
3047                                 enable = ins.params().type == to_utf8(cmd.argument());
3048                         }
3049                 }
3050                 break;
3051         case LFUN_WRAP_INSERT:
3052                 code = WRAP_CODE;
3053                 // not allowed in description items
3054                 enable = !inDescriptionItem(cur);
3055                 break;
3056         case LFUN_FLOAT_LIST_INSERT: {
3057                 code = FLOAT_LIST_CODE;
3058                 // not allowed in description items
3059                 enable = !inDescriptionItem(cur);
3060                 if (enable) {
3061                         FloatList const & floats = cur.buffer()->params().documentClass().floats();
3062                         FloatList::const_iterator cit = floats[to_ascii(cmd.argument())];
3063                         // make sure we know about such floats
3064                         if (cit == floats.end() ||
3065                                         // and that we know how to generate a list of them
3066                             (!cit->second.usesFloatPkg() && cit->second.listCommand().empty())) {
3067                                 status.setUnknown(true);
3068                                 // probably not necessary, but...
3069                                 enable = false;
3070                         }
3071                 }
3072                 break;
3073         }
3074         case LFUN_CAPTION_INSERT: {
3075                 code = CAPTION_CODE;
3076                 string arg = cmd.getArg(0);
3077                 bool varia = arg != "Unnumbered"
3078                         && cur.inset().allowsCaptionVariation(arg);
3079                 // not allowed in description items,
3080                 // and in specific insets
3081                 enable = !inDescriptionItem(cur)
3082                         && (varia || arg.empty() || arg == "Standard");
3083                 break;
3084         }
3085         case LFUN_NOTE_INSERT:
3086                 code = NOTE_CODE;
3087                 break;
3088         case LFUN_FLEX_INSERT: {
3089                 code = FLEX_CODE;
3090                 string s = cmd.getArg(0);
3091                 InsetLayout il =
3092                         cur.buffer()->params().documentClass().insetLayout(from_utf8(s));
3093                 if (il.lyxtype() != InsetLyXType::CHARSTYLE &&
3094                     il.lyxtype() != InsetLyXType::CUSTOM &&
3095                     il.lyxtype ()!= InsetLyXType::STANDARD)
3096                         enable = false;
3097                 break;
3098                 }
3099         case LFUN_BOX_INSERT:
3100                 code = BOX_CODE;
3101                 break;
3102         case LFUN_BRANCH_INSERT:
3103                 code = BRANCH_CODE;
3104                 if (cur.buffer()->masterBuffer()->params().branchlist().empty()
3105                     && cur.buffer()->params().branchlist().empty())
3106                         enable = false;
3107                 break;
3108         case LFUN_IPA_INSERT:
3109                 code = IPA_CODE;
3110                 break;
3111         case LFUN_PHANTOM_INSERT:
3112                 code = PHANTOM_CODE;
3113                 break;
3114         case LFUN_LABEL_INSERT:
3115                 code = LABEL_CODE;
3116                 break;
3117         case LFUN_INFO_INSERT:
3118                 code = INFO_CODE;
3119                 enable = cmd.argument().empty()
3120                         || infoparams.validateArgument(cur.buffer(), cmd.argument(), true);
3121                 break;
3122         case LFUN_ARGUMENT_INSERT: {
3123                 code = ARG_CODE;
3124                 allow_in_passthru = true;
3125                 string const arg = cmd.getArg(0);
3126                 if (arg.empty()) {
3127                         enable = false;
3128                         break;
3129                 }
3130                 Layout const & lay = cur.paragraph().layout();
3131                 Layout::LaTeXArgMap args = lay.args();
3132                 Layout::LaTeXArgMap::const_iterator const lait =
3133                                 args.find(arg);
3134                 if (lait != args.end()) {
3135                         enable = true;
3136                         pit_type pit = cur.pit();
3137                         pit_type lastpit = cur.pit();
3138                         if (lay.isEnvironment() && !prefixIs(arg, "item:")) {
3139                                 // In a sequence of "merged" environment layouts, we only allow
3140                                 // non-item arguments once.
3141                                 lastpit = cur.lastpit();
3142                                 // get the first paragraph in sequence with this layout
3143                                 depth_type const current_depth = cur.paragraph().params().depth();
3144                                 while (true) {
3145                                         if (pit == 0)
3146                                                 break;
3147                                         Paragraph cpar = pars_[pit - 1];
3148                                         if (cpar.layout() == lay && cpar.params().depth() == current_depth)
3149                                                 --pit;
3150                                         else
3151                                                 break;
3152                                 }
3153                         }
3154                         for (; pit <= lastpit; ++pit) {
3155                                 if (pars_[pit].layout() != lay)
3156                                         break;
3157                                 for (auto const & table : pars_[pit].insetList())
3158                                         if (InsetArgument const * ins = table.inset->asInsetArgument())
3159                                                 if (ins->name() == arg) {
3160                                                         // we have this already
3161                                                         enable = false;
3162                                                         break;
3163                                                 }
3164                         }
3165                 } else
3166                         enable = false;
3167                 break;
3168         }
3169         case LFUN_INDEX_INSERT:
3170                 code = INDEX_CODE;
3171                 break;
3172         case LFUN_INDEX_PRINT:
3173                 code = INDEX_PRINT_CODE;
3174                 // not allowed in description items
3175                 enable = !inDescriptionItem(cur);
3176                 break;
3177         case LFUN_NOMENCL_INSERT:
3178                 if (cur.selIsMultiCell() || cur.selIsMultiLine()) {
3179                         enable = false;
3180                         break;
3181                 }
3182                 code = NOMENCL_CODE;
3183                 break;
3184         case LFUN_NOMENCL_PRINT:
3185                 code = NOMENCL_PRINT_CODE;
3186                 // not allowed in description items
3187                 enable = !inDescriptionItem(cur);
3188                 break;
3189         case LFUN_HREF_INSERT:
3190                 if (cur.selIsMultiCell() || cur.selIsMultiLine()) {
3191                         enable = false;
3192                         break;
3193                 }
3194                 code = HYPERLINK_CODE;
3195                 break;
3196         case LFUN_IPAMACRO_INSERT: {
3197                 string const arg = cmd.getArg(0);
3198                 if (arg == "deco")
3199                         code = IPADECO_CODE;
3200                 else
3201                         code = IPACHAR_CODE;
3202                 break;
3203         }
3204         case LFUN_QUOTE_INSERT:
3205                 // always allow this, since we will inset a raw quote
3206                 // if an inset is not allowed.
3207                 allow_in_passthru = true;
3208                 break;
3209         case LFUN_SPECIALCHAR_INSERT:
3210                 code = SPECIALCHAR_CODE;
3211                 break;
3212         case LFUN_SPACE_INSERT:
3213                 // slight hack: we know this is allowed in math mode
3214                 if (cur.inTexted())
3215                         code = SPACE_CODE;
3216                 break;
3217         case LFUN_PREVIEW_INSERT:
3218                 code = PREVIEW_CODE;
3219                 break;
3220         case LFUN_SCRIPT_INSERT:
3221                 code = SCRIPT_CODE;
3222                 break;
3223
3224         case LFUN_MATH_INSERT:
3225         case LFUN_MATH_AMS_MATRIX:
3226         case LFUN_MATH_MATRIX:
3227         case LFUN_MATH_DELIM:
3228         case LFUN_MATH_BIGDELIM:
3229         case LFUN_MATH_DISPLAY:
3230         case LFUN_MATH_MODE:
3231         case LFUN_MATH_MACRO:
3232         case LFUN_MATH_SUBSCRIPT:
3233         case LFUN_MATH_SUPERSCRIPT:
3234                 code = MATH_HULL_CODE;
3235                 break;
3236
3237         case LFUN_REGEXP_MODE:
3238                 code = MATH_HULL_CODE;
3239                 enable = cur.buffer()->isInternal() && !cur.inRegexped();
3240                 break;
3241
3242         case LFUN_INSET_MODIFY:
3243                 // We need to disable this, because we may get called for a
3244                 // tabular cell via
3245                 // InsetTabular::getStatus() -> InsetText::getStatus()
3246                 // and we don't handle LFUN_INSET_MODIFY.
3247                 enable = false;
3248                 break;
3249
3250         case LFUN_FONT_EMPH:
3251                 status.setOnOff(fontinfo.emph() == FONT_ON);
3252                 enable = !cur.paragraph().isPassThru();
3253                 break;
3254
3255         case LFUN_FONT_ITAL:
3256                 status.setOnOff(fontinfo.shape() == ITALIC_SHAPE);
3257                 enable = !cur.paragraph().isPassThru();
3258                 break;
3259
3260         case LFUN_FONT_NOUN:
3261                 status.setOnOff(fontinfo.noun() == FONT_ON);
3262                 enable = !cur.paragraph().isPassThru();
3263                 break;
3264
3265         case LFUN_FONT_BOLD:
3266         case LFUN_FONT_BOLDSYMBOL:
3267                 status.setOnOff(fontinfo.series() == BOLD_SERIES);
3268                 enable = !cur.paragraph().isPassThru();
3269                 break;
3270
3271         case LFUN_FONT_SANS:
3272                 status.setOnOff(fontinfo.family() == SANS_FAMILY);
3273                 enable = !cur.paragraph().isPassThru();
3274                 break;
3275
3276         case LFUN_FONT_ROMAN:
3277                 status.setOnOff(fontinfo.family() == ROMAN_FAMILY);
3278                 enable = !cur.paragraph().isPassThru();
3279                 break;
3280
3281         case LFUN_FONT_TYPEWRITER:
3282                 status.setOnOff(fontinfo.family() == TYPEWRITER_FAMILY);
3283                 enable = !cur.paragraph().isPassThru();
3284                 break;
3285
3286         case LFUN_CUT:
3287         case LFUN_COPY:
3288                 enable = cur.selection();
3289                 break;
3290
3291         case LFUN_PASTE: {
3292                 if (cmd.argument().empty()) {
3293                         if (theClipboard().isInternal())
3294                                 enable = cap::numberOfSelections() > 0;
3295                         else
3296                                 enable = !theClipboard().empty();
3297                         break;
3298                 }
3299
3300                 // we have an argument
3301                 string const arg = to_utf8(cmd.argument());
3302                 if (isStrUnsignedInt(arg)) {
3303                         // it's a number and therefore means the internal stack
3304                         unsigned int n = convert<unsigned int>(arg);
3305                         enable = cap::numberOfSelections() > n;
3306                         break;
3307                 }
3308
3309                 // explicit text type?
3310                 if (arg == "html") {
3311                         // Do not enable for PlainTextType, since some tidying in the
3312                         // frontend is needed for HTML, which is too unsafe for plain text.
3313                         enable = theClipboard().hasTextContents(Clipboard::HtmlTextType);
3314                         break;
3315                 } else if (arg == "latex") {
3316                         // LaTeX is usually not available on the clipboard with
3317                         // the correct MIME type, but in plain text.
3318                         enable = theClipboard().hasTextContents(Clipboard::PlainTextType) ||
3319                                  theClipboard().hasTextContents(Clipboard::LaTeXTextType);
3320                         break;
3321                 }
3322
3323                 Clipboard::GraphicsType type = Clipboard::AnyGraphicsType;
3324                 if (arg == "pdf")
3325                         type = Clipboard::PdfGraphicsType;
3326                 else if (arg == "png")
3327                         type = Clipboard::PngGraphicsType;
3328                 else if (arg == "jpeg")
3329                         type = Clipboard::JpegGraphicsType;
3330                 else if (arg == "linkback")
3331                         type = Clipboard::LinkBackGraphicsType;
3332                 else if (arg == "emf")
3333                         type = Clipboard::EmfGraphicsType;
3334                 else if (arg == "wmf")
3335                         type = Clipboard::WmfGraphicsType;
3336                 else {
3337                         // unknown argument
3338                         LYXERR0("Unrecognized graphics type: " << arg);
3339                         // we don't want to assert if the user just mistyped the LFUN
3340                         LATTEST(cmd.origin() != FuncRequest::INTERNAL);
3341                         enable = false;
3342                         break;
3343                 }
3344                 enable = theClipboard().hasGraphicsContents(type);
3345                 break;
3346         }
3347
3348         case LFUN_CLIPBOARD_PASTE:
3349         case LFUN_CLIPBOARD_PASTE_SIMPLE:
3350                 enable = !theClipboard().empty();
3351                 break;
3352
3353         case LFUN_PRIMARY_SELECTION_PASTE:
3354                 enable = cur.selection() || !theSelection().empty();
3355                 break;
3356
3357         case LFUN_SELECTION_PASTE:
3358                 enable = cap::selection();
3359                 break;
3360
3361         case LFUN_PARAGRAPH_MOVE_UP:
3362                 enable = cur.pit() > 0 && !cur.selection();
3363                 break;
3364
3365         case LFUN_PARAGRAPH_MOVE_DOWN:
3366                 enable = cur.pit() < cur.lastpit() && !cur.selection();
3367                 break;
3368
3369         case LFUN_CHANGE_ACCEPT:
3370         case LFUN_CHANGE_REJECT:
3371                 if (!cur.selection())
3372                         enable = cur.paragraph().isChanged(cur.pos());
3373                 else {
3374                         // will enable if there is a change in the selection
3375                         enable = false;
3376
3377                         // cheap improvement for efficiency: using cached
3378                         // buffer variable, if there is no change in the
3379                         // document, no need to check further.
3380                         if (!cur.buffer()->areChangesPresent())
3381                                 break;
3382
3383                         for (DocIterator it = cur.selectionBegin(); ; it.forwardPar()) {
3384                                 pos_type const beg = it.pos();
3385                                 pos_type end;
3386                                 bool const in_last_par = (it.pit() == cur.selectionEnd().pit() &&
3387                                                           it.idx() == cur.selectionEnd().idx());
3388                                 if (in_last_par)
3389                                         end = cur.selectionEnd().pos();
3390                                 else
3391                                         // the +1 is needed for cases, e.g., where there is a
3392                                         // paragraph break. See #11629.
3393                                         end = it.lastpos() + 1;
3394                                 if (beg != end && it.paragraph().isChanged(beg, end)) {
3395                                         enable = true;
3396                                         break;
3397                                 }
3398                                 if (beg != end && it.paragraph().hasChangedInsets(beg, end)) {
3399                                         enable = true;
3400                                         break;
3401                                 }
3402                                 if (in_last_par)
3403                                         break;
3404                         }
3405                 }
3406                 break;
3407
3408         case LFUN_OUTLINE_UP:
3409         case LFUN_OUTLINE_DOWN:
3410         case LFUN_OUTLINE_IN:
3411         case LFUN_OUTLINE_OUT:
3412                 // FIXME: LyX is not ready for outlining within inset.
3413                 enable = isMainText()
3414                         && cur.buffer()->text().getTocLevel(cur.pit()) != Layout::NOT_IN_TOC;
3415                 break;
3416
3417         case LFUN_NEWLINE_INSERT:
3418                 // LaTeX restrictions (labels or empty par)
3419                 enable = !cur.paragraph().isPassThru()
3420                         && cur.pos() > cur.paragraph().beginOfBody();
3421                 break;
3422
3423         case LFUN_SEPARATOR_INSERT:
3424                 // Always enabled for now
3425                 enable = true;
3426                 break;
3427
3428         case LFUN_TAB_INSERT:
3429         case LFUN_TAB_DELETE:
3430                 enable = cur.paragraph().isPassThru();
3431                 break;
3432
3433         case LFUN_GRAPHICS_SET_GROUP: {
3434                 InsetGraphics * ins = graphics::getCurrentGraphicsInset(cur);
3435                 if (!ins)
3436                         enable = false;
3437                 else
3438                         status.setOnOff(to_utf8(cmd.argument()) == ins->getParams().groupId);
3439                 break;
3440         }
3441
3442         case LFUN_NEWPAGE_INSERT:
3443                 // not allowed in description items
3444                 code = NEWPAGE_CODE;
3445                 enable = !inDescriptionItem(cur);
3446                 break;
3447
3448         case LFUN_LANGUAGE:
3449                 enable = !cur.paragraph().isPassThru();
3450                 status.setOnOff(cmd.getArg(0) == cur.real_current_font.language()->lang());
3451                 break;
3452
3453         case LFUN_PARAGRAPH_BREAK:
3454                 enable = inset().allowMultiPar();
3455                 break;
3456
3457         case LFUN_SPELLING_ADD:
3458         case LFUN_SPELLING_IGNORE:
3459         case LFUN_SPELLING_REMOVE:
3460                 enable = theSpellChecker() != nullptr;
3461                 if (enable && !cmd.getArg(1).empty()) {
3462                         // validate explicitly given language
3463                         Language const * const lang = const_cast<Language *>(languages.getLanguage(cmd.getArg(1)));
3464                         enable &= lang != nullptr;
3465                 }
3466                 break;
3467
3468         case LFUN_LAYOUT:
3469         case LFUN_LAYOUT_TOGGLE: {
3470                 bool const ignoreautonests = cmd.getArg(1) == "ignoreautonests";
3471                 docstring const req_layout = ignoreautonests ? from_utf8(cmd.getArg(0)) : cmd.argument();
3472                 docstring const layout = resolveLayout(req_layout, cur);
3473
3474                 enable = !owner_->forcePlainLayout() && !layout.empty();
3475                 status.setOnOff(isAlreadyLayout(layout, cur));
3476                 break;
3477         }
3478
3479         case LFUN_ENVIRONMENT_SPLIT: {
3480                 if (cmd.argument() == "outer") {
3481                         // check if we have an environment in our nesting hierarchy
3482                         bool res = false;
3483                         depth_type const current_depth = cur.paragraph().params().depth();
3484                         pit_type pit = cur.pit();
3485                         Paragraph cpar = pars_[pit];
3486                         while (true) {
3487                                 if (pit == 0 || cpar.params().depth() == 0)
3488                                         break;
3489                                 --pit;
3490                                 cpar = pars_[pit];
3491                                 if (cpar.params().depth() < current_depth)
3492                                         res = cpar.layout().isEnvironment();
3493                         }
3494                         enable = res;
3495                         break;
3496                 }
3497                 else if (cmd.argument() == "previous") {
3498                         // look if we have an environment in the previous par
3499                         pit_type pit = cur.pit();
3500                         Paragraph cpar = pars_[pit];
3501                         if (pit > 0) {
3502                                 --pit;
3503                                 cpar = pars_[pit];
3504                                 enable = cpar.layout().isEnvironment();
3505                                 break;
3506                         }
3507                         enable = false;
3508                         break;
3509                 }
3510                 else if (cur.paragraph().layout().isEnvironment()) {
3511                         enable = cmd.argument() == "before"
3512                                 || cur.pos() > 0 || !isFirstInSequence(cur.pit());
3513                         break;
3514                 }
3515                 enable = false;
3516                 break;
3517         }
3518
3519         case LFUN_LAYOUT_PARAGRAPH:
3520         case LFUN_PARAGRAPH_PARAMS:
3521         case LFUN_PARAGRAPH_PARAMS_APPLY:
3522         case LFUN_PARAGRAPH_UPDATE:
3523                 enable = owner_->allowParagraphCustomization();
3524                 break;
3525
3526         // FIXME: why are accent lfuns forbidden with pass_thru layouts?
3527         //  Because they insert COMBINING DIACRITICAL Unicode characters,
3528         //  that cannot be handled by LaTeX but must be converted according
3529         //  to the definition in lib/unicodesymbols?
3530         case LFUN_ACCENT_ACUTE:
3531         case LFUN_ACCENT_BREVE:
3532         case LFUN_ACCENT_CARON:
3533         case LFUN_ACCENT_CEDILLA:
3534         case LFUN_ACCENT_CIRCLE:
3535         case LFUN_ACCENT_CIRCUMFLEX:
3536         case LFUN_ACCENT_DOT:
3537         case LFUN_ACCENT_GRAVE:
3538         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
3539         case LFUN_ACCENT_MACRON:
3540         case LFUN_ACCENT_OGONEK:
3541         case LFUN_ACCENT_TIE:
3542         case LFUN_ACCENT_TILDE:
3543         case LFUN_ACCENT_PERISPOMENI:
3544         case LFUN_ACCENT_UMLAUT:
3545         case LFUN_ACCENT_UNDERBAR:
3546         case LFUN_ACCENT_UNDERDOT:
3547         case LFUN_FONT_FRAK:
3548         case LFUN_FONT_SIZE:
3549         case LFUN_FONT_STATE:
3550         case LFUN_FONT_UNDERLINE:
3551         case LFUN_FONT_STRIKEOUT:
3552         case LFUN_FONT_CROSSOUT:
3553         case LFUN_FONT_UNDERUNDERLINE:
3554         case LFUN_FONT_UNDERWAVE:
3555         case LFUN_TEXTSTYLE_UPDATE:
3556                 enable = !cur.paragraph().isPassThru();
3557                 break;
3558
3559         case LFUN_FONT_DEFAULT: {
3560                 Font font(inherit_font, ignore_language);
3561                 BufferParams const & bp = cur.buffer()->masterParams();
3562                 if (cur.selection()) {
3563                         enable = false;
3564                         // Check if we have a non-default font attribute
3565                         // in the selection range.
3566                         DocIterator const from = cur.selectionBegin();
3567                         DocIterator const to = cur.selectionEnd();
3568                         for (DocIterator dit = from ; dit != to && !dit.atEnd(); ) {
3569                                 if (!dit.inTexted()) {
3570                                         dit.forwardPos();
3571                                         continue;
3572                                 }
3573                                 Paragraph const & par = dit.paragraph();
3574                                 pos_type const pos = dit.pos();
3575                                 Font tmp = par.getFontSettings(bp, pos);
3576                                 if (tmp.fontInfo() != font.fontInfo()
3577                                     || tmp.language() != bp.language) {
3578                                         enable = true;
3579                                         break;
3580                                 }
3581                                 dit.forwardPos();
3582                         }
3583                         break;
3584                 }
3585                 // Disable if all is default already.
3586                 enable = (cur.current_font.fontInfo() != font.fontInfo()
3587                           || cur.current_font.language() != bp.language);
3588                 break;
3589         }
3590
3591         case LFUN_TEXTSTYLE_APPLY:
3592                 enable = !freeFonts.empty();
3593                 break;
3594
3595         case LFUN_WORD_DELETE_FORWARD:
3596         case LFUN_WORD_DELETE_BACKWARD:
3597         case LFUN_LINE_DELETE_FORWARD:
3598         case LFUN_WORD_FORWARD:
3599         case LFUN_WORD_BACKWARD:
3600         case LFUN_WORD_RIGHT:
3601         case LFUN_WORD_LEFT:
3602         case LFUN_CHAR_FORWARD:
3603         case LFUN_CHAR_FORWARD_SELECT:
3604         case LFUN_CHAR_BACKWARD:
3605         case LFUN_CHAR_BACKWARD_SELECT:
3606         case LFUN_CHAR_LEFT:
3607         case LFUN_CHAR_LEFT_SELECT:
3608         case LFUN_CHAR_RIGHT:
3609         case LFUN_CHAR_RIGHT_SELECT:
3610         case LFUN_UP:
3611         case LFUN_UP_SELECT:
3612         case LFUN_DOWN:
3613         case LFUN_DOWN_SELECT:
3614         case LFUN_PARAGRAPH_SELECT:
3615         case LFUN_PARAGRAPH_UP_SELECT:
3616         case LFUN_PARAGRAPH_DOWN_SELECT:
3617         case LFUN_LINE_BEGIN_SELECT:
3618         case LFUN_LINE_END_SELECT:
3619         case LFUN_WORD_FORWARD_SELECT:
3620         case LFUN_WORD_BACKWARD_SELECT:
3621         case LFUN_WORD_RIGHT_SELECT:
3622         case LFUN_WORD_LEFT_SELECT:
3623         case LFUN_WORD_SELECT:
3624         case LFUN_SECTION_SELECT:
3625         case LFUN_BUFFER_BEGIN:
3626         case LFUN_BUFFER_END:
3627         case LFUN_BUFFER_BEGIN_SELECT:
3628         case LFUN_BUFFER_END_SELECT:
3629         case LFUN_INSET_BEGIN:
3630         case LFUN_INSET_END:
3631         case LFUN_INSET_BEGIN_SELECT:
3632         case LFUN_INSET_END_SELECT:
3633         case LFUN_PARAGRAPH_UP:
3634         case LFUN_PARAGRAPH_DOWN:
3635         case LFUN_LINE_BEGIN:
3636         case LFUN_LINE_END:
3637         case LFUN_CHAR_DELETE_FORWARD:
3638         case LFUN_CHAR_DELETE_BACKWARD:
3639         case LFUN_WORD_UPCASE:
3640         case LFUN_WORD_LOWCASE:
3641         case LFUN_WORD_CAPITALIZE:
3642         case LFUN_CHARS_TRANSPOSE:
3643         case LFUN_SERVER_GET_XY:
3644         case LFUN_SERVER_SET_XY:
3645         case LFUN_SERVER_GET_LAYOUT:
3646         case LFUN_SELF_INSERT:
3647         case LFUN_UNICODE_INSERT:
3648         case LFUN_THESAURUS_ENTRY:
3649         case LFUN_ESCAPE:
3650         case LFUN_SERVER_GET_STATISTICS:
3651                 // these are handled in our dispatch()
3652                 enable = true;
3653                 break;
3654
3655         case LFUN_INSET_INSERT: {
3656                 string const type = cmd.getArg(0);
3657                 if (type == "toc") {
3658                         code = TOC_CODE;
3659                         // not allowed in description items
3660                         //FIXME: couldn't this be merged in Inset::insetAllowed()?
3661                         enable = !inDescriptionItem(cur);
3662                 } else {
3663                         enable = true;
3664                 }
3665                 break;
3666         }
3667
3668         case LFUN_SEARCH_IGNORE: {
3669                 bool const value = cmd.getArg(1) == "true";
3670                 setIgnoreFormat(cmd.getArg(0), value);
3671                 break;
3672         }
3673
3674         default:
3675                 return false;
3676         }
3677
3678         if (code != NO_CODE
3679             && (cur.empty()
3680                 || !cur.inset().insetAllowed(code)
3681                 || (cur.paragraph().layout().pass_thru && !allow_in_passthru)))
3682                 enable = false;
3683
3684         status.setEnabled(enable);
3685         return true;
3686 }
3687
3688
3689 void Text::pasteString(Cursor & cur, docstring const & clip,
3690                 bool asParagraphs)
3691 {
3692         if (!clip.empty()) {
3693                 cur.recordUndo();
3694                 if (asParagraphs)
3695                         insertStringAsParagraphs(cur, clip, cur.current_font);
3696                 else
3697                         insertStringAsLines(cur, clip, cur.current_font);
3698         }
3699 }
3700
3701
3702 // FIXME: an item inset would make things much easier.
3703 bool Text::inDescriptionItem(Cursor const & cur) const
3704 {
3705         Paragraph const & par = cur.paragraph();
3706         pos_type const pos = cur.pos();
3707         pos_type const body_pos = par.beginOfBody();
3708
3709         if (par.layout().latextype != LATEX_LIST_ENVIRONMENT
3710             && (par.layout().latextype != LATEX_ITEM_ENVIRONMENT
3711                 || par.layout().margintype != MARGIN_FIRST_DYNAMIC))
3712                 return false;
3713
3714         return (pos < body_pos
3715                 || (pos == body_pos
3716                     && (pos == 0 || par.getChar(pos - 1) != ' ')));
3717 }
3718
3719
3720 std::vector<docstring> Text::getFreeFonts() const
3721 {
3722         vector<docstring> ffList;
3723
3724         for (auto const & f : freeFonts)
3725                 ffList.push_back(f.first);
3726
3727         return ffList;
3728 }
3729
3730 } // namespace lyx