src/mathed/InsetMathNest.cpp

   1 /**
   2  * \file InsetMathNest.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author André Pönitz
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "InsetMathNest.h"
  14
  15 #include "InsetMathArray.h"
  16 #include "InsetMathAMSArray.h"
  17 #include "InsetMathBig.h"
  18 #include "InsetMathBox.h"
  19 #include "InsetMathBrace.h"
  20 #include "InsetMathChar.h"
  21 #include "InsetMathColor.h"
  22 #include "InsetMathComment.h"
  23 #include "InsetMathDelim.h"
  24 #include "InsetMathEnsureMath.h"
  25 #include "InsetMathHull.h"
  26 #include "InsetMathRef.h"
  27 #include "InsetMathScript.h"
  28 #include "InsetMathSpace.h"
  29 #include "InsetMathSymbol.h"
  30 #include "InsetMathUnknown.h"
  31 #include "MathAutoCorrect.h"
  32 #include "MathCompletionList.h"
  33 #include "MathFactory.h"
  34 #include "InsetMathMacro.h"
  35 #include "InsetMathMacroArgument.h"
  36 #include "MathParser.h"
  37 #include "MathStream.h"
  38 #include "MathSupport.h"
  39
  40 #include "Buffer.h"
  41 #include "BufferParams.h"
  42 #include "BufferView.h"
  43 #include "CoordCache.h"
  44 #include "Cursor.h"
  45 #include "CutAndPaste.h"
  46 #include "DispatchResult.h"
  47 #include "Encoding.h"
  48 #include "FuncRequest.h"
  49 #include "FuncStatus.h"
  50 #include "LaTeXFeatures.h"
  51 #include "LyX.h"
  52 #include "LyXRC.h"
  53 #include "MetricsInfo.h"
  54 #include "OutputParams.h"
  55 #include "TexRow.h"
  56 #include "Text.h"
  57
  58 #include "frontends/Application.h"
  59 #include "frontends/Clipboard.h"
  60 #include "frontends/Painter.h"
  61 #include "frontends/Selection.h"
  62
  63 #include "support/debug.h"
  64 #include "support/docstream.h"
  65 #include "support/gettext.h"
  66 #include "support/lassert.h"
  67 #include "support/lstrings.h"
  68 #include "support/textutils.h"
  69
  70 #include <algorithm>
  71 #include <sstream>
  72
  73 using namespace std;
  74 using namespace lyx::support;
  75
  76 namespace lyx {
  77
  78 using cap::copySelection;
  79 using cap::grabAndEraseSelection;
  80 using cap::cutSelection;
  81 using cap::replaceSelection;
  82 using cap::selClearOrDel;
  83
  84
  85 InsetMathNest::InsetMathNest(Buffer * buf, idx_type nargs)
  86         : InsetMath(buf), cells_(nargs), lock_(false)
  87 {
  88         setBuffer(*buf);
  89 }
  90
  91
  92 InsetMathNest::InsetMathNest(InsetMathNest const & inset)
  93         : InsetMath(inset), cells_(inset.cells_), lock_(inset.lock_)
  94 {}
  95
  96
  97 InsetMathNest::~InsetMathNest()
  98 {
  99         map<BufferView const *, bool>::iterator it = mouse_hover_.begin();
 100         map<BufferView const *, bool>::iterator end = mouse_hover_.end();
 101         for (; it != end; ++it)
 102                 if (it->second)
 103                         it->first->clearLastInset(this);
 104 }
 105
 106
 107 InsetMathNest & InsetMathNest::operator=(InsetMathNest const & inset)
 108 {
 109         cells_ = inset.cells_;
 110         lock_ = inset.lock_;
 111         mouse_hover_.clear();
 112         InsetMath::operator=(inset);
 113         return *this;
 114 }
 115
 116
 117 void InsetMathNest::setBuffer(Buffer & buffer)
 118 {
 119         InsetMath::setBuffer(buffer);
 120         for (MathData & data : cells_)
 121                 data.setBuffer(buffer);
 122 }
 123
 124
 125 InsetMath::idx_type InsetMathNest::nargs() const
 126 {
 127         return cells_.size();
 128 }
 129
 130
 131 void InsetMathNest::cursorPos(BufferView const & bv,
 132                 CursorSlice const & sl, bool /*boundary*/,
 133                 int & x, int & y) const
 134 {
 135 // FIXME: This is a hack. Ideally, the coord cache should not store
 136 // absolute positions, but relative ones. This would mean to call
 137 // setXY() not in MathData::draw(), but in the parent insets' draw()
 138 // with the correctly adjusted x,y values. But this means that we'd have
 139 // to touch all (math)inset's draw() methods. Right now, we'll store
 140 // absolute value, and make them here relative, only to make them
 141 // absolute again when actually drawing the cursor. What a mess.
 142         LASSERT(&sl.inset() == this, return);
 143         MathData const & ar = sl.cell();
 144         CoordCache const & coord_cache = bv.coordCache();
 145         if (!coord_cache.getArrays().has(&ar)) {
 146                 // this can (semi-)legally happen if we just created this cell
 147                 // and it never has been drawn before. So don't ASSERT.
 148                 //lyxerr << "no cached data for array " << &ar << endl;
 149                 x = 0;
 150                 y = 0;
 151                 return;
 152         }
 153         Point const pt = coord_cache.getArrays().xy(&ar);
 154         if (!coord_cache.getInsets().has(this)) {
 155                 // same as above
 156                 //lyxerr << "no cached data for inset " << this << endl;
 157                 x = 0;
 158                 y = 0;
 159                 return;
 160         }
 161         Point const pt2 = coord_cache.getInsets().xy(this);
 162         //lyxerr << "retrieving position cache for MathData "
 163         //      << pt.x_ << ' ' << pt.y_ << endl;
 164         x = pt.x_ - pt2.x_ + ar.pos2x(&bv, sl.pos());
 165         y = pt.y_ - pt2.y_;
 166 //      lyxerr << "pt.y_ : " << pt.y_ << " pt2_.y_ : " << pt2.y_
 167 //              << " asc: " << ascent() << "  des: " << descent()
 168 //              << " ar.asc: " << ar.ascent() << " ar.des: " << ar.descent() << endl;
 169         // move cursor visually into empty cells ("blue rectangles");
 170         if (ar.empty()) {
 171                 Dimension const dim = coord_cache.getArrays().dim(&ar);
 172                 x += dim.wid / 3;
 173         }
 174 }
 175
 176
 177 void InsetMathNest::cellsMetrics(MetricsInfo const & mi) const
 178 {
 179         MetricsInfo m = mi;
 180         for (auto const & cell : cells_) {
 181                 Dimension dim;
 182                 cell.metrics(m, dim);
 183         }
 184 }
 185
 186
 187 void InsetMathNest::updateBuffer(ParIterator const & it, UpdateType utype, bool const deleted)
 188 {
 189         for (idx_type i = 0, n = nargs(); i != n; ++i)
 190                 cell(i).updateBuffer(it, utype, deleted);
 191 }
 192
 193
 194
 195 bool InsetMathNest::idxNext(Cursor & cur) const
 196 {
 197         LASSERT(&cur.inset() == this, return false);
 198         if (cur.idx() == cur.lastidx())
 199                 return false;
 200         ++cur.idx();
 201         cur.pos() = 0;
 202         return true;
 203 }
 204
 205
 206 bool InsetMathNest::idxForward(Cursor & cur) const
 207 {
 208         return idxNext(cur);
 209 }
 210
 211
 212 bool InsetMathNest::idxPrev(Cursor & cur) const
 213 {
 214         LASSERT(&cur.inset() == this, return false);
 215         if (cur.idx() == 0)
 216                 return false;
 217         --cur.idx();
 218         cur.pos() = lyxrc.mac_like_cursor_movement ? cur.lastpos() : 0;
 219         return true;
 220 }
 221
 222
 223 bool InsetMathNest::idxBackward(Cursor & cur) const
 224 {
 225         return idxPrev(cur);
 226 }
 227
 228
 229 bool InsetMathNest::idxFirst(Cursor & cur) const
 230 {
 231         LASSERT(&cur.inset() == this, return false);
 232         if (nargs() == 0)
 233                 return false;
 234         cur.idx() = firstIdx();
 235         cur.pos() = 0;
 236         return true;
 237 }
 238
 239
 240 bool InsetMathNest::idxLast(Cursor & cur) const
 241 {
 242         LASSERT(&cur.inset() == this, return false);
 243         if (nargs() == 0)
 244                 return false;
 245         cur.idx() = lastIdx();
 246         cur.pos() = cur.lastpos();
 247         return true;
 248 }
 249
 250
 251 void InsetMathNest::dump() const
 252 {
 253         odocstringstream oss;
 254         otexrowstream ots(oss);
 255         WriteStream os(ots);
 256         os << "---------------------------------------------\n";
 257         write(os);
 258         os << "\n";
 259         for (idx_type i = 0, n = nargs(); i != n; ++i)
 260                 os << cell(i) << "\n";
 261         os << "---------------------------------------------\n";
 262         lyxerr << to_utf8(oss.str());
 263 }
 264
 265
 266 void InsetMathNest::draw(PainterInfo &, int, int) const
 267 {
 268 #if 0
 269         if (lock_)
 270                 pi.pain.fillRectangle(x, y - ascent(), width(), height(),
 271                                         Color_mathlockbg);
 272 #endif
 273 }
 274
 275
 276 void InsetMathNest::validate(LaTeXFeatures & features) const
 277 {
 278         for (idx_type i = 0; i < nargs(); ++i)
 279                 cell(i).validate(features);
 280 }
 281
 282
 283 void InsetMathNest::replace(ReplaceData & rep)
 284 {
 285         for (idx_type i = 0; i < nargs(); ++i)
 286                 cell(i).replace(rep);
 287 }
 288
 289
 290 bool InsetMathNest::contains(MathData const & ar) const
 291 {
 292         for (idx_type i = 0; i < nargs(); ++i)
 293                 if (cell(i).contains(ar))
 294                         return true;
 295         return false;
 296 }
 297
 298
 299 bool InsetMathNest::lock() const
 300 {
 301         return lock_;
 302 }
 303
 304
 305 void InsetMathNest::lock(bool l)
 306 {
 307         lock_ = l;
 308 }
 309
 310
 311 bool InsetMathNest::isActive() const
 312 {
 313         return nargs() > 0;
 314 }
 315
 316
 317 MathData InsetMathNest::glue() const
 318 {
 319         MathData ar;
 320         for (size_t i = 0; i < nargs(); ++i)
 321                 ar.append(cell(i));
 322         return ar;
 323 }
 324
 325
 326 void InsetMathNest::write(WriteStream & os) const
 327 {
 328         MathEnsurer ensurer(os, currentMode() == MATH_MODE);
 329         ModeSpecifier specifier(os, currentMode(), lockedMode());
 330         docstring const latex_name = name();
 331         os << '\\' << latex_name;
 332         os.inMathClass(asClassInset());
 333         for (size_t i = 0; i < nargs(); ++i) {
 334                 Changer dummy = os.changeRowEntry(TexRow::mathEntry(id(),i));
 335                 os << '{' << cell(i) << '}';
 336         }
 337         if (nargs() == 0)
 338                 os.pendingSpace(true);
 339         if (lock_ && !os.latex()) {
 340                 os << "\\lyxlock";
 341                 os.pendingSpace(true);
 342         }
 343         os.inMathClass(false);
 344 }
 345
 346
 347 void InsetMathNest::normalize(NormalStream & os) const
 348 {
 349         os << '[' << name();
 350         for (size_t i = 0; i < nargs(); ++i)
 351                 os << ' ' << cell(i);
 352         os << ']';
 353 }
 354
 355
 356 void InsetMathNest::latex(otexstream & os, OutputParams const & runparams) const
 357 {
 358         WriteStream wi(os, runparams.moving_arg, true,
 359                         runparams.dryrun ? WriteStream::wsDryrun : WriteStream::wsDefault,
 360                         runparams.encoding);
 361         wi.strikeoutMath(runparams.inDeletedInset);
 362         if (runparams.inulemcmd) {
 363                 wi.ulemCmd(WriteStream::UNDERLINE);
 364                 if (runparams.local_font) {
 365                         FontInfo f = runparams.local_font->fontInfo();
 366                         if (f.strikeout() == FONT_ON)
 367                                 wi.ulemCmd(WriteStream::STRIKEOUT);
 368                 }
 369         }
 370         wi.canBreakLine(os.canBreakLine());
 371         Changer dummy = wi.changeRowEntry(TexRow::textEntry(runparams.lastid,
 372                                                             runparams.lastpos));
 373         write(wi);
 374         // Reset parbreak and command termination status after a math inset.
 375         os.lastChar(0);
 376         os.canBreakLine(wi.canBreakLine());
 377         os.terminateCommand(false);
 378 }
 379
 380
 381 bool InsetMathNest::setMouseHover(BufferView const * bv, bool mouse_hover)
 382         const
 383 {
 384         mouse_hover_[bv] = mouse_hover;
 385         return true;
 386 }
 387
 388
 389 bool InsetMathNest::notifyCursorLeaves(Cursor const & /*old*/, Cursor & /*cur*/)
 390 {
 391         // FIXME: look here
 392 #if 0
 393         MathData & ar = cur.cell();
 394         // remove base-only "scripts"
 395         for (pos_type i = 0; i + 1 < ar.size(); ++i) {
 396                 InsetMathScript * p = operator[](i).nucleus()->asScriptInset();
 397                 if (p && p->nargs() == 1) {
 398                         MathData ar = p->nuc();
 399                         erase(i);
 400                         insert(i, ar);
 401                         cur.adjust(i, ar.size() - 1);
 402                 }
 403         }
 404
 405         // glue adjacent font insets of the same kind
 406         for (pos_type i = 0; i + 1 < size(); ++i) {
 407                 InsetMathFont * p = operator[](i).nucleus()->asFontInset();
 408                 InsetMathFont const * q = operator[](i + 1)->asFontInset();
 409                 if (p && q && p->name() == q->name()) {
 410                         p->cell(0).append(q->cell(0));
 411                         erase(i + 1);
 412                         cur.adjust(i, -1);
 413                 }
 414         }
 415 #endif
 416         return false;
 417 }
 418
 419
 420 void InsetMathNest::handleFont
 421         (Cursor & cur, docstring const & arg, char const * const font)
 422 {
 423         handleFont(cur, arg, from_ascii(font));
 424 }
 425
 426
 427 void InsetMathNest::handleFont(Cursor & cur, docstring const & arg,
 428         docstring const & font)
 429 {
 430         cur.recordUndoSelection();
 431
 432         // this whole function is a hack and won't work for incremental font
 433         // changes...
 434         if (cur.inset().asInsetMath()->name() == font)
 435                 cur.handleFont(to_utf8(font));
 436         else
 437                 handleNest(cur, createInsetMath(font, cur.buffer()), arg);
 438 }
 439
 440
 441 void InsetMathNest::handleNest(Cursor & cur, MathAtom const & nest)
 442 {
 443         handleNest(cur, nest, docstring());
 444 }
 445
 446
 447 void InsetMathNest::handleNest(Cursor & cur, MathAtom const & nest,
 448         docstring const & arg)
 449 {
 450         CursorSlice i1 = cur.selBegin();
 451         CursorSlice i2 = cur.selEnd();
 452         if (!i1.inset().asInsetMath())
 453                 return;
 454         if (i1.idx() == i2.idx()) {
 455                 // the easy case where only one cell is selected
 456                 cur.handleNest(nest);
 457                 cur.insert(arg);
 458                 return;
 459         }
 460
 461         // multiple selected cells in a simple non-grid inset
 462         if (i1.asInsetMath()->nrows() == 0 || i1.asInsetMath()->ncols() == 0) {
 463                 for (idx_type i = i1.idx(); i <= i2.idx(); ++i) {
 464                         // select cell
 465                         cur.idx() = i;
 466                         cur.pos() = 0;
 467                         cur.resetAnchor();
 468                         cur.pos() = cur.lastpos();
 469                         cur.setSelection();
 470
 471                         // change font of cell
 472                         cur.handleNest(nest);
 473                         cur.insert(arg);
 474
 475                         // cur is in the font inset now. If the loop continues,
 476                         // we need to get outside again for the next cell
 477                         if (i + 1 <= i2.idx())
 478                                 cur.pop_back();
 479                 }
 480                 return;
 481         }
 482
 483         // the complicated case with multiple selected cells in a grid
 484         row_type r1, r2;
 485         col_type c1, c2;
 486         cap::region(i1, i2, r1, r2, c1, c2);
 487         for (row_type row = r1; row <= r2; ++row) {
 488                 for (col_type col = c1; col <= c2; ++col) {
 489                         // select cell
 490                         cur.idx() = i1.asInsetMath()->index(row, col);
 491                         cur.pos() = 0;
 492                         cur.resetAnchor();
 493                         cur.pos() = cur.lastpos();
 494                         cur.setSelection();
 495
 496                         //
 497                         cur.handleNest(nest);
 498                         cur.insert(arg);
 499
 500                         // cur is in the font inset now. If the loop continues,
 501                         // we need to get outside again for the next cell
 502                         if (col + 1 <= c2 || row + 1 <= r2)
 503                                 cur.pop_back();
 504                 }
 505         }
 506 }
 507
 508
 509 void InsetMathNest::handleFont2(Cursor & cur, docstring const & arg)
 510 {
 511         cur.recordUndoSelection();
 512         Font font;
 513         bool b;
 514         font.fromString(to_utf8(arg), b);
 515         if (font.fontInfo().color() != Color_inherit &&
 516             font.fontInfo().color() != Color_ignore)
 517                 handleNest(cur, MathAtom(new InsetMathColor(buffer_, true, font.fontInfo().color())));
 518
 519         // FIXME: support other font changes here as well?
 520 }
 521
 522 void InsetMathNest::doDispatch(Cursor & cur, FuncRequest & cmd)
 523 {
 524         //LYXERR0("InsetMathNest: request: " << cmd);
 525
 526         Parse::flags parseflg = Parse::QUIET | Parse::USETEXT;
 527
 528         FuncCode const act = cmd.action();
 529         switch (act) {
 530
 531         case LFUN_CLIPBOARD_PASTE:
 532                 parseflg |= Parse::VERBATIM;
 533                 // fall through
 534         case LFUN_PASTE: {
 535                 if (cur.currentMode() != MATH_MODE)
 536                         parseflg |= Parse::TEXTMODE;
 537                 cur.recordUndoSelection();
 538                 cur.message(_("Paste"));
 539                 replaceSelection(cur);
 540                 docstring topaste;
 541                 if (cmd.argument().empty() && !theClipboard().isInternal())
 542                         topaste = theClipboard().getAsText(frontend::Clipboard::PlainTextType);
 543                 else {
 544                         size_t n = 0;
 545                         idocstringstream is(cmd.argument());
 546                         is >> n;
 547                         topaste = cap::selection(n, buffer().params().documentClassPtr());
 548                 }
 549                 cur.niceInsert(topaste, parseflg, false);
 550                 cur.clearSelection(); // bug 393
 551                 cur.forceBufferUpdate();
 552                 cur.finishUndo();
 553                 break;
 554         }
 555
 556         case LFUN_CUT:
 557                 cur.recordUndo();
 558                 cutSelection(cur, true);
 559                 cur.message(_("Cut"));
 560                 // Prevent stale position >= size crash
 561                 // Probably not necessary anymore, see eraseSelection (gb 2005-10-09)
 562                 cur.normalize();
 563                 cur.forceBufferUpdate();
 564                 break;
 565
 566         case LFUN_COPY:
 567                 copySelection(cur);
 568                 cur.message(_("Copy"));
 569                 break;
 570
 571         case LFUN_MOUSE_PRESS:
 572                 lfunMousePress(cur, cmd);
 573                 break;
 574
 575         case LFUN_MOUSE_MOTION:
 576                 lfunMouseMotion(cur, cmd);
 577                 break;
 578
 579         case LFUN_MOUSE_RELEASE:
 580                 lfunMouseRelease(cur, cmd);
 581                 break;
 582
 583         case LFUN_FINISHED_LEFT: // in math, left is backwards
 584         case LFUN_FINISHED_BACKWARD:
 585                 cur.bv().cursor() = cur;
 586                 break;
 587
 588         case LFUN_FINISHED_RIGHT: // in math, right is forward
 589         case LFUN_FINISHED_FORWARD:
 590                 ++cur.pos();
 591                 cur.bv().cursor() = cur;
 592                 break;
 593
 594         case LFUN_WORD_RIGHT:
 595         case LFUN_WORD_LEFT:
 596         case LFUN_WORD_BACKWARD:
 597         case LFUN_WORD_FORWARD:
 598         case LFUN_CHAR_RIGHT:
 599         case LFUN_CHAR_LEFT:
 600         case LFUN_CHAR_BACKWARD:
 601         case LFUN_CHAR_FORWARD:
 602                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 603                 // fall through
 604         case LFUN_WORD_RIGHT_SELECT:
 605         case LFUN_WORD_LEFT_SELECT:
 606         case LFUN_WORD_BACKWARD_SELECT:
 607         case LFUN_WORD_FORWARD_SELECT:
 608         case LFUN_CHAR_RIGHT_SELECT:
 609         case LFUN_CHAR_LEFT_SELECT:
 610         case LFUN_CHAR_BACKWARD_SELECT:
 611         case LFUN_CHAR_FORWARD_SELECT: {
 612                 // are we in a selection?
 613                 bool select = (act == LFUN_WORD_RIGHT_SELECT
 614                                            || act == LFUN_WORD_LEFT_SELECT
 615                                            || act == LFUN_WORD_BACKWARD_SELECT
 616                                            || act == LFUN_WORD_FORWARD_SELECT
 617                                || act == LFUN_CHAR_RIGHT_SELECT
 618                                            || act == LFUN_CHAR_LEFT_SELECT
 619                                            || act == LFUN_CHAR_BACKWARD_SELECT
 620                                            || act == LFUN_CHAR_FORWARD_SELECT);
 621                 // select words
 622                 bool word = (act == LFUN_WORD_RIGHT_SELECT
 623                              || act == LFUN_WORD_LEFT_SELECT
 624                              || act == LFUN_WORD_BACKWARD_SELECT
 625                              || act == LFUN_WORD_FORWARD_SELECT
 626                              || act == LFUN_WORD_RIGHT
 627                              || act == LFUN_WORD_LEFT
 628                              || act == LFUN_WORD_BACKWARD
 629                              || act == LFUN_WORD_FORWARD);
 630                 // are we moving forward or backwards?
 631                 // If the command was RIGHT or LEFT, then whether we're moving forward
 632                 // or backwards depends on the cursor movement mode (logical or visual):
 633                 //  * in visual mode, since math is always LTR, right -> forward,
 634                 //    left -> backwards
 635                 //  * in logical mode, the mapping is determined by the
 636                 //    reverseDirectionNeeded() function
 637
 638                 bool forward;
 639                 FuncCode finish_lfun;
 640
 641                 if (act == LFUN_CHAR_FORWARD
 642                     || act == LFUN_CHAR_FORWARD_SELECT
 643                     || act == LFUN_WORD_FORWARD
 644                     || act == LFUN_WORD_FORWARD_SELECT) {
 645                         forward = true;
 646                         finish_lfun = LFUN_FINISHED_FORWARD;
 647                 }
 648                 else if (act == LFUN_CHAR_BACKWARD
 649                          || act == LFUN_CHAR_BACKWARD_SELECT
 650                          || act == LFUN_WORD_BACKWARD
 651                          || act == LFUN_WORD_BACKWARD_SELECT) {
 652                         forward = false;
 653                         finish_lfun = LFUN_FINISHED_BACKWARD;
 654                 }
 655                 else {
 656                         bool right = (act == LFUN_CHAR_RIGHT_SELECT
 657                                                   || act == LFUN_CHAR_RIGHT
 658                                       || act == LFUN_WORD_RIGHT_SELECT
 659                                       || act == LFUN_WORD_RIGHT);
 660                         if (lyxrc.visual_cursor || !cur.reverseDirectionNeeded())
 661                                 forward = right;
 662                         else
 663                                 forward = !right;
 664
 665                         if (right)
 666                                 finish_lfun = LFUN_FINISHED_RIGHT;
 667                         else
 668                                 finish_lfun = LFUN_FINISHED_LEFT;
 669                 }
 670                 // Now that we know exactly what we want to do, let's do it!
 671                 cur.selHandle(select);
 672                 cur.clearTargetX();
 673                 cur.macroModeClose();
 674                 // try moving forward or backwards as necessary...
 675                 if (!(forward ? cur.mathForward(word) : cur.mathBackward(word))) {
 676                         // ... and if movement failed, then finish forward or backwards
 677                         // as necessary
 678                         cmd = FuncRequest(finish_lfun);
 679                         cur.undispatched();
 680                 }
 681                 break;
 682         }
 683
 684         case LFUN_DOWN:
 685         case LFUN_UP:
 686         case LFUN_PARAGRAPH_UP:
 687         case LFUN_PARAGRAPH_DOWN:
 688                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 689                 // fall through
 690         case LFUN_DOWN_SELECT:
 691         case LFUN_UP_SELECT:
 692         case LFUN_PARAGRAPH_UP_SELECT:
 693         case LFUN_PARAGRAPH_DOWN_SELECT: {
 694                 // close active macro
 695                 if (cur.inMacroMode()) {
 696                         cur.macroModeClose();
 697                         break;
 698                 }
 699
 700                 // stop/start the selection
 701                 bool select = act == LFUN_DOWN_SELECT
 702                         || act == LFUN_UP_SELECT
 703                         || act == LFUN_PARAGRAPH_DOWN_SELECT
 704                         || act == LFUN_PARAGRAPH_UP_SELECT;
 705                 cur.selHandle(select);
 706
 707                 // go up/down
 708                 bool up = act == LFUN_UP || act == LFUN_UP_SELECT
 709                         || act == LFUN_PARAGRAPH_UP || act == LFUN_PARAGRAPH_UP_SELECT;
 710                 bool successful = cur.upDownInMath(up);
 711                 if (successful)
 712                         break;
 713
 714                 if (cur.fixIfBroken())
 715                         // FIXME: Something bad happened. We pass the corrected Cursor
 716                         // instead of letting things go worse.
 717                         break;
 718
 719                 // We did not manage to move the cursor.
 720                 cur.undispatched();
 721                 break;
 722         }
 723
 724         case LFUN_MOUSE_DOUBLE:
 725         case LFUN_WORD_SELECT:
 726                 cur.pos() = 0;
 727                 cur.bv().mouseSetCursor(cur);
 728                 cur.pos() = cur.lastpos();
 729                 cur.bv().mouseSetCursor(cur, true);
 730                 break;
 731
 732         case LFUN_MOUSE_TRIPLE:
 733                 cur.idx() = 0;
 734                 cur.pos() = 0;
 735                 cur.bv().mouseSetCursor(cur);
 736                 cur.idx() = cur.lastidx();
 737                 cur.pos() = cur.lastpos();
 738                 cur.bv().mouseSetCursor(cur, true);
 739                 break;
 740
 741         case LFUN_LINE_BEGIN:
 742                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 743                 // fall through
 744         case LFUN_LINE_BEGIN_SELECT:
 745                 cur.selHandle(act == LFUN_WORD_BACKWARD_SELECT ||
 746                                 act == LFUN_WORD_LEFT_SELECT ||
 747                                 act == LFUN_LINE_BEGIN_SELECT);
 748                 cur.macroModeClose();
 749                 if (cur.pos() != 0) {
 750                         cur.pos() = 0;
 751                 } else if (cur.col() != 0) {
 752                         cur.idx() -= cur.col();
 753                         cur.pos() = 0;
 754                 } else if (cur.idx() != 0) {
 755                         cur.idx() = 0;
 756                         cur.pos() = 0;
 757                 } else {
 758                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
 759                         cur.undispatched();
 760                 }
 761                 break;
 762
 763         case LFUN_LINE_END:
 764                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 765                 // fall through
 766         case LFUN_LINE_END_SELECT:
 767                 cur.selHandle(act == LFUN_WORD_FORWARD_SELECT ||
 768                                 act == LFUN_WORD_RIGHT_SELECT ||
 769                                 act == LFUN_LINE_END_SELECT);
 770                 cur.macroModeClose();
 771                 cur.clearTargetX();
 772                 if (cur.pos() != cur.lastpos()) {
 773                         cur.pos() = cur.lastpos();
 774                 } else if (ncols() && (cur.col() != cur.lastcol())) {
 775                         cur.idx() = cur.idx() - cur.col() + cur.lastcol();
 776                         cur.pos() = cur.lastpos();
 777                 } else if (cur.idx() != cur.lastidx()) {
 778                         cur.idx() = cur.lastidx();
 779                         cur.pos() = cur.lastpos();
 780                 } else {
 781                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 782                         cur.undispatched();
 783                 }
 784                 break;
 785
 786         case LFUN_CELL_FORWARD:
 787                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 788                 cur.selHandle(false);
 789                 cur.clearTargetX();
 790                 cur.macroModeClose();
 791                 if (!cur.inset().idxNext(cur)) {
 792                         cur.idx() = firstIdx();
 793                         cur.pos() = 0;
 794                 }
 795                 break;
 796
 797         case LFUN_CELL_BACKWARD:
 798                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 799                 cur.selHandle(false);
 800                 cur.clearTargetX();
 801                 cur.macroModeClose();
 802                 if (!cur.inset().idxPrev(cur)) {
 803                         cur.idx() = lastIdx();
 804                         cur.pos() = lyxrc.mac_like_cursor_movement ? cur.lastpos() : 0;
 805                 }
 806                 break;
 807
 808         case LFUN_WORD_DELETE_BACKWARD:
 809         case LFUN_CHAR_DELETE_BACKWARD:
 810                 if (cur.pos() == 0)
 811                         // May affect external cell:
 812                         cur.recordUndoInset();
 813                 else if (!cur.inMacroMode())
 814                         cur.recordUndoSelection();
 815                 // if the inset can not be removed from within, delete it
 816                 if (!cur.backspace(cmd.getArg(0) == "force")) {
 817                         FuncRequest newcmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD, "force");
 818                         cur.innerText()->dispatch(cur, newcmd);
 819                 }
 820                 break;
 821
 822         case LFUN_WORD_DELETE_FORWARD:
 823         case LFUN_CHAR_DELETE_FORWARD:
 824                 if (cur.pos() == cur.lastpos())
 825                         // May affect external cell:
 826                         cur.recordUndoInset();
 827                 else
 828                         cur.recordUndoSelection();
 829                 // if the inset can not be removed from within, delete it
 830                 if (!cur.erase(cmd.getArg(0) == "force")) {
 831                         FuncRequest newcmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD, "force");
 832                         cur.innerText()->dispatch(cur, newcmd);
 833                 }
 834                 break;
 835
 836         case LFUN_ESCAPE:
 837                 if (cur.selection())
 838                         cur.clearSelection();
 839                 else  {
 840                         if (cur.inMacroMode())
 841                                 cur.macroModeClose(true);
 842                         else {
 843                                 cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 844                                 cur.undispatched();
 845                         }
 846                 }
 847                 break;
 848
 849         // 'Locks' the math inset. A 'locked' math inset behaves as a unit
 850         // that is traversed by a single <CursorLeft>/<CursorRight>.
 851         case LFUN_INSET_TOGGLE:
 852                 cur.recordUndo();
 853                 lock(!lock());
 854                 cur.popForward();
 855                 break;
 856
 857         case LFUN_SELF_INSERT:
 858                 // special case first for big delimiters
 859                 if (cmd.argument().size() != 1 && interpretString(cur, cmd.argument()))
 860                         break;
 861
 862                 for (char_type c : cmd.argument()) {
 863                         // Don't record undo steps if we are in macro mode and thus
 864                         // cmd.argument is the next character of the macro name.
 865                         // Otherwise we'll get an invalid cursor if we undo after
 866                         // the macro was finished and the macro is a known command,
 867                         // e.g. sqrt. Cursor::macroModeClose replaces in this case
 868                         // the InsetMathUnknown with name "frac" by an empty
 869                         // InsetMathFrac -> a pos value > 0 is invalid.
 870                         // A side effect is that an undo before the macro is finished
 871                         // undoes the complete macro, not only the last character.
 872                         // At the time we hit '\' we are not in macro mode, still.
 873                         if (!cur.inMacroMode())
 874                                 cur.recordUndoSelection();
 875
 876                         // special handling of space. If we insert an inset
 877                         // via macro mode, we want to put the cursor inside it
 878                         // if relevant. Think typing "\frac<space>".
 879                         if (c == ' '
 880                             && cur.inMacroMode() && cur.macroName() != "\\"
 881                             && cur.macroModeClose() && cur.pos() > 0)
 882                                 cur.editInsertedInset();
 883                         else if (!interpretChar(cur, c)) {
 884                                 cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 885                                 cur.undispatched();
 886                                 // FIXME: can we avoid skipping the end of the string?
 887                                 break;
 888                         }
 889                 }
 890                 break;
 891
 892         //case LFUN_SERVER_GET_XY:
 893         //      break;
 894
 895         case LFUN_SERVER_SET_XY: {
 896                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 897                 int x = 0;
 898                 int y = 0;
 899                 istringstream is(to_utf8(cmd.argument()));
 900                 is >> x >> y;
 901                 cur.setTargetX(x);
 902                 break;
 903         }
 904
 905         // Special casing for superscript in case of LyX handling
 906         // dead-keys:
 907         case LFUN_ACCENT_CIRCUMFLEX:
 908                 if (cmd.argument().empty()) {
 909                         // do superscript if LyX handles
 910                         // deadkeys
 911                         cur.recordUndoSelection();
 912                         script(cur, true, grabAndEraseSelection(cur));
 913                 }
 914                 break;
 915
 916         case LFUN_ACCENT_UMLAUT:
 917         case LFUN_ACCENT_ACUTE:
 918         case LFUN_ACCENT_GRAVE:
 919         case LFUN_ACCENT_BREVE:
 920         case LFUN_ACCENT_DOT:
 921         case LFUN_ACCENT_MACRON:
 922         case LFUN_ACCENT_CARON:
 923         case LFUN_ACCENT_TILDE:
 924         case LFUN_ACCENT_CEDILLA:
 925         case LFUN_ACCENT_CIRCLE:
 926         case LFUN_ACCENT_UNDERDOT:
 927         case LFUN_ACCENT_TIE:
 928         case LFUN_ACCENT_OGONEK:
 929         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 930                 break;
 931
 932         //  Math fonts
 933         case LFUN_TEXTSTYLE_APPLY:
 934         case LFUN_TEXTSTYLE_UPDATE:
 935                 handleFont2(cur, cmd.argument());
 936                 break;
 937
 938         case LFUN_FONT_BOLD:
 939                 if (currentMode() != MATH_MODE)
 940                         handleFont(cur, cmd.argument(), "textbf");
 941                 else
 942                         handleFont(cur, cmd.argument(), "mathbf");
 943                 break;
 944         case LFUN_FONT_BOLDSYMBOL:
 945                 if (currentMode() != MATH_MODE)
 946                         handleFont(cur, cmd.argument(), "textbf");
 947                 else
 948                         handleFont(cur, cmd.argument(), "boldsymbol");
 949                 break;
 950         case LFUN_FONT_SANS:
 951                 if (currentMode() != MATH_MODE)
 952                         handleFont(cur, cmd.argument(), "textsf");
 953                 else
 954                         handleFont(cur, cmd.argument(), "mathsf");
 955                 break;
 956         case LFUN_FONT_EMPH:
 957                 if (currentMode() != MATH_MODE)
 958                         handleFont(cur, cmd.argument(), "emph");
 959                 else
 960                         handleFont(cur, cmd.argument(), "mathcal");
 961                 break;
 962         case LFUN_FONT_ROMAN:
 963                 if (currentMode() != MATH_MODE)
 964                         handleFont(cur, cmd.argument(), "textrm");
 965                 else
 966                         handleFont(cur, cmd.argument(), "mathrm");
 967                 break;
 968         case LFUN_FONT_TYPEWRITER:
 969                 if (currentMode() != MATH_MODE)
 970                         handleFont(cur, cmd.argument(), "texttt");
 971                 else
 972                         handleFont(cur, cmd.argument(), "mathtt");
 973                 break;
 974         case LFUN_FONT_FRAK:
 975                 handleFont(cur, cmd.argument(), "mathfrak");
 976                 break;
 977         case LFUN_FONT_ITAL:
 978                 if (currentMode() != MATH_MODE)
 979                         handleFont(cur, cmd.argument(), "textit");
 980                 else
 981                         handleFont(cur, cmd.argument(), "mathit");
 982                 break;
 983         case LFUN_FONT_NOUN:
 984                 if (currentMode() != MATH_MODE)
 985                         // FIXME: should be "noun"
 986                         handleFont(cur, cmd.argument(), "textsc");
 987                 else
 988                         handleFont(cur, cmd.argument(), "mathbb");
 989                 break;
 990         case LFUN_FONT_DEFAULT:
 991                 handleFont(cur, cmd.argument(), "textnormal");
 992                 break;
 993         case LFUN_FONT_UNDERLINE:
 994                 cur.recordUndo();
 995                 cur.handleNest(createInsetMath("underline", cur.buffer()));
 996                 break;
 997
 998         case LFUN_MATH_MODE: {
 999 #if 1
1000                 // ignore math-mode on when already in math mode
1001                 if (currentMode() == Inset::MATH_MODE && cmd.argument() == "on")
1002                         break;
1003                 cur.recordUndoSelection();
1004                 cur.macroModeClose();
1005                 docstring const save_selection = grabAndEraseSelection(cur);
1006                 selClearOrDel(cur);
1007                 if (currentMode() != Inset::MATH_MODE)
1008                         cur.plainInsert(MathAtom(new InsetMathEnsureMath(buffer_)));
1009                 else
1010                         cur.plainInsert(createInsetMath("text", buffer_));
1011                 cur.posBackward();
1012                 cur.pushBackward(*cur.nextInset());
1013                 cur.niceInsert(save_selection);
1014                 cur.forceBufferUpdate();
1015 #else
1016                 if (currentMode() == Inset::TEXT_MODE) {
1017                         cur.recordUndoSelection();
1018                         cur.niceInsert(MathAtom(new InsetMathHull("simple", cur.buffer())));
1019                         cur.message(_("create new math text environment ($...$)"));
1020                 } else {
1021                         handleFont(cur, cmd.argument(), "textrm");
1022                         cur.message(_("entered math text mode (textrm)"));
1023                 }
1024 #endif
1025                 break;
1026         }
1027
1028         case LFUN_REGEXP_MODE: {
1029                 InsetMath * im = cur.inset().asInsetMath();
1030                 if (im) {
1031                         InsetMathHull * i = im->asHullInset();
1032                         if (i && i->getType() == hullRegexp) {
1033                                 cur.message(_("Already in regular expression mode"));
1034                                 break;
1035                         }
1036                 }
1037                 cur.macroModeClose();
1038                 docstring const save_selection = grabAndEraseSelection(cur);
1039                 selClearOrDel(cur);
1040                 cur.plainInsert(MathAtom(new InsetMathHull(buffer_, hullRegexp)));
1041                 cur.posBackward();
1042                 cur.pushBackward(*cur.nextInset());
1043                 cur.niceInsert(save_selection);
1044                 cur.message(_("Regular expression editor mode"));
1045                 break;
1046         }
1047
1048         case LFUN_MATH_FONT_STYLE: {
1049                 FuncRequest fr = FuncRequest(LFUN_MATH_INSERT, '\\' + cmd.argument());
1050                 doDispatch(cur, fr);
1051                 break;
1052         }
1053
1054         case LFUN_MATH_SIZE: {
1055                 FuncRequest fr = FuncRequest(LFUN_MATH_INSERT, cmd.argument());
1056                 doDispatch(cur, fr);
1057                 break;
1058         }
1059
1060         case LFUN_MATH_MATRIX: {
1061                 cur.recordUndo();
1062                 unsigned int m = 1;
1063                 unsigned int n = 1;
1064                 docstring v_align;
1065                 docstring h_align;
1066                 idocstringstream is(cmd.argument());
1067                 is >> m >> n >> v_align >> h_align;
1068                 if (m < 1)
1069                         m = 1;
1070                 if (n < 1)
1071                         n = 1;
1072                 v_align += 'c';
1073                 cur.niceInsert(MathAtom(new InsetMathArray(buffer_,
1074                         from_ascii("array"), m, n, (char)v_align[0], h_align)));
1075                 break;
1076         }
1077
1078         case LFUN_MATH_AMS_MATRIX: {
1079                 cur.recordUndo();
1080                 unsigned int m = 1;
1081                 unsigned int n = 1;
1082                 docstring name = from_ascii("matrix");
1083                 idocstringstream is(cmd.argument());
1084                 is >> m >> n >> name;
1085                 if (m < 1)
1086                         m = 1;
1087                 if (n < 1)
1088                         n = 1;
1089                 // check if we have a valid decoration
1090                 if (name != "pmatrix" && name != "bmatrix"
1091                         && name != "Bmatrix" && name != "vmatrix"
1092                         && name != "Vmatrix" && name != "matrix"
1093                         && name != "smallmatrix")
1094                         name = from_ascii("matrix");
1095
1096                 cur.niceInsert(
1097                         MathAtom(new InsetMathAMSArray(buffer_, name, m, n)));
1098                 break;
1099         }
1100
1101         case LFUN_MATH_DELIM: {
1102                 docstring ls;
1103                 docstring rs = split(cmd.argument(), ls, ' ');
1104                 // Reasonable default values
1105                 if (ls.empty())
1106                         ls = '(';
1107                 if (rs.empty())
1108                         rs = ')';
1109                 cur.recordUndo();
1110                 cur.handleNest(MathAtom(new InsetMathDelim(buffer_, ls, rs)));
1111                 break;
1112         }
1113
1114         case LFUN_MATH_BIGDELIM: {
1115                 docstring const lname  = from_utf8(cmd.getArg(0));
1116                 docstring const ldelim = from_utf8(cmd.getArg(1));
1117                 docstring const rname  = from_utf8(cmd.getArg(2));
1118                 docstring const rdelim = from_utf8(cmd.getArg(3));
1119                 latexkeys const * l = in_word_set(lname);
1120                 bool const have_l = l && l->inset == "big" &&
1121                                     InsetMathBig::isBigInsetDelim(ldelim);
1122                 l = in_word_set(rname);
1123                 bool const have_r = l && l->inset == "big" &&
1124                                     InsetMathBig::isBigInsetDelim(rdelim);
1125                 // We mimic LFUN_MATH_DELIM in case we have an empty left
1126                 // or right delimiter.
1127                 if (have_l || have_r) {
1128                         cur.recordUndo();
1129                         docstring const selection = grabAndEraseSelection(cur);
1130                         selClearOrDel(cur);
1131                         if (have_l)
1132                                 cur.insert(MathAtom(new InsetMathBig(lname,
1133                                                                 ldelim)));
1134                         // first insert the right delimiter and then go back
1135                         // and re-insert the selection (bug 7088)
1136                         if (have_r) {
1137                                 cur.insert(MathAtom(new InsetMathBig(rname,
1138                                                                 rdelim)));
1139                                 cur.posBackward();
1140                         }
1141                         cur.niceInsert(selection);
1142                 }
1143                 // Don't call cur.undispatched() if we did nothing, this would
1144                 // lead to infinite recursion via Text::dispatch().
1145                 break;
1146         }
1147
1148         case LFUN_SPACE_INSERT: {
1149                 cur.recordUndoSelection();
1150                 string const name = cmd.getArg(0);
1151                 if (name == "normal")
1152                         cur.insert(MathAtom(new InsetMathSpace(" ", "")));
1153                 else if (name == "protected")
1154                         cur.insert(MathAtom(new InsetMathSpace("~", "")));
1155                 else if (name == "thin" || name == "med" || name == "thick")
1156                         cur.insert(MathAtom(new InsetMathSpace(name + "space", "")));
1157                 else if (name == "hfill*")
1158                         cur.insert(MathAtom(new InsetMathSpace("hspace*{\\fill}", "")));
1159                 else if (name == "quad" || name == "qquad" ||
1160                          name == "enspace" || name == "enskip" ||
1161                          name == "negthinspace" || name == "negmedspace" ||
1162                          name == "negthickspace" || name == "hfill")
1163                         cur.insert(MathAtom(new InsetMathSpace(name, "")));
1164                 else if (name == "hspace" || name == "hspace*") {
1165                         string const len = cmd.getArg(1);
1166                         if (len.empty() || !isValidLength(len)) {
1167                                 lyxerr << "LyX function 'space-insert " << name << "' "
1168                                           "needs a valid length argument." << endl;
1169                                 break;
1170                         }
1171                         cur.insert(MathAtom(new InsetMathSpace(name, len)));
1172                 } else
1173                         cur.insert(MathAtom(new InsetMathSpace));
1174                 break;
1175         }
1176
1177         case LFUN_MATH_SPACE:
1178                 cur.recordUndoSelection();
1179                 if (cmd.argument().empty())
1180                         cur.insert(MathAtom(new InsetMathSpace));
1181                 else {
1182                         string const name = cmd.getArg(0);
1183                         string const len = cmd.getArg(1);
1184                         cur.insert(MathAtom(new InsetMathSpace(name, len)));
1185                 }
1186                 break;
1187
1188         case LFUN_ERT_INSERT:
1189                 // interpret this as if a backslash was typed
1190                 cur.recordUndo();
1191                 interpretChar(cur, '\\');
1192                 break;
1193
1194         case LFUN_MATH_SUBSCRIPT:
1195                 // interpret this as if a _ was typed
1196                 cur.recordUndoSelection();
1197                 interpretChar(cur, '_');
1198                 break;
1199
1200         case LFUN_MATH_SUPERSCRIPT:
1201                 // interpret this as if a ^ was typed
1202                 cur.recordUndoSelection();
1203                 interpretChar(cur, '^');
1204                 break;
1205
1206         case LFUN_MATH_MACRO_FOLD:
1207         case LFUN_MATH_MACRO_UNFOLD: {
1208                 Cursor it = cur;
1209                 bool fold = act == LFUN_MATH_MACRO_FOLD;
1210                 bool found = findMacroToFoldUnfold(it, fold);
1211                 if (found) {
1212                         InsetMathMacro * macro = it.nextInset()->asInsetMath()->asMacro();
1213                         cur.recordUndoInset();
1214                         if (fold)
1215                                 macro->fold(cur);
1216                         else
1217                                 macro->unfold(cur);
1218                 }
1219                 break;
1220         }
1221
1222         case LFUN_QUOTE_INSERT:
1223                 // interpret this as if a straight " was typed
1224                 cur.recordUndoSelection();
1225                 interpretChar(cur, '\"');
1226                 break;
1227
1228 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
1229 // handling such that "self-insert" works on "arbitrary stuff" too, and
1230 // math-insert only handles special math things like "matrix".
1231         case LFUN_MATH_INSERT: {
1232                 cur.recordUndoSelection();
1233                 if (cmd.argument() == "^" || cmd.argument() == "_")
1234                         interpretChar(cur, cmd.argument()[0]);
1235                 else if (!cur.selection())
1236                         cur.niceInsert(cmd.argument());
1237                 else {
1238                         MathData ar(cur.buffer());
1239                         asArray(cmd.argument(), ar);
1240                         if (ar.size() == 1
1241                             && ar[0]->asNestInset()
1242                             && ar[0]->asNestInset()->nargs() > 1)
1243                                 handleNest(cur, ar[0]);
1244                         else
1245                                 cur.niceInsert(cmd.argument());
1246                 }
1247                 break;
1248         }
1249
1250         case LFUN_DIALOG_SHOW_NEW_INSET: {
1251                 docstring const & name = cmd.argument();
1252                 string data;
1253                 if (name == "ref") {
1254                         InsetMathRef tmp(buffer_, name);
1255                         data = tmp.createDialogStr();
1256                         cur.bv().showDialog(to_utf8(name), data);
1257                 } else if (name == "mathspace") {
1258                         cur.bv().showDialog(to_utf8(name));
1259                 }
1260                 break;
1261         }
1262
1263         case LFUN_INSET_INSERT: {
1264                 MathData ar;
1265                 if (createInsetMath_fromDialogStr(cmd.argument(), ar)) {
1266                         cur.recordUndoSelection();
1267                         cur.insert(ar);
1268                         cur.forceBufferUpdate();
1269                 } else
1270                         cur.undispatched();
1271                 break;
1272         }
1273         case LFUN_INSET_DISSOLVE:
1274                 if (!asHullInset()) {
1275                         cur.recordUndoInset();
1276                         cur.pullArg();
1277                 }
1278                 break;
1279
1280         case LFUN_MATH_LIMITS: {
1281                 InsetMath * in = 0;
1282                 if (cur.pos() < cur.lastpos() && cur.nextMath().allowsLimitsChange())
1283                         in = &cur.nextMath();
1284                 else if (cur.pos() > 0 && cur.prevMath().allowsLimitsChange())
1285                         in = &cur.prevMath();
1286                 else if (cur.lastpos() > 0 && cur.cell().back()->allowsLimitsChange())
1287                         in = cur.cell().back().nucleus();
1288                 // only when nucleus allows this
1289                 if (!in)
1290                         return;
1291                 cur.recordUndoInset();
1292                 if (!cmd.argument().empty()) {
1293                         if (cmd.argument() == "limits")
1294                                 in->limits(LIMITS);
1295                         else if (cmd.argument() == "nolimits")
1296                                 in->limits(NO_LIMITS);
1297                         else
1298                                 in->limits(AUTO_LIMITS);
1299                 } else if (in->limits() == AUTO_LIMITS)
1300                         in->limits(in->defaultLimits() == LIMITS ? NO_LIMITS : LIMITS);
1301                 else
1302                         in->limits(AUTO_LIMITS);
1303                 return;
1304         }
1305
1306         default:
1307                 InsetMath::doDispatch(cur, cmd);
1308                 break;
1309         }
1310 }
1311
1312
1313 bool InsetMathNest::findMacroToFoldUnfold(Cursor & it, bool fold) const {
1314         // look for macro to open/close, but stay in mathed
1315         for (; !it.empty(); it.pop_back()) {
1316
1317                 // go backward through the current cell
1318                 Inset * inset = it.nextInset();
1319                 while (inset && inset->asInsetMath()) {
1320                         InsetMathMacro * macro = inset->asInsetMath()->asMacro();
1321                         if (macro) {
1322                                 // found the an macro to open/close?
1323                                 if (macro->folded() != fold)
1324                                         return true;
1325
1326                                 // Wrong folding state.
1327                                 // If this was the first we see in this slice, look further left,
1328                                 // otherwise go up.
1329                                 if (inset != it.nextInset())
1330                                         break;
1331                         }
1332
1333                         // go up if this was the left most position
1334                         if (it.pos() == 0)
1335                                 break;
1336
1337                         // go left
1338                         it.pos()--;
1339                         inset = it.nextInset();
1340                 }
1341         }
1342
1343         return false;
1344 }
1345
1346
1347 bool InsetMathNest::getStatus(Cursor & cur, FuncRequest const & cmd,
1348                 FuncStatus & flag) const
1349 {
1350         // the font related toggles
1351         //string tc = "mathnormal";
1352         bool ret = true;
1353         string const arg = to_utf8(cmd.argument());
1354         switch (cmd.action()) {
1355 #if 0
1356         case LFUN_INSET_MODIFY:
1357                 // FIXME: check temporarily disabled
1358                 // valign code
1359                 char align = mathcursor::valign();
1360                 if (align == '\0') {
1361                         enable = false;
1362                         break;
1363                 }
1364                 if (cmd.argument().empty()) {
1365                         flag.clear();
1366                         break;
1367                 }
1368                 if (!contains("tcb", cmd.argument()[0])) {
1369                         enable = false;
1370                         break;
1371                 }
1372                 flag.setOnOff(cmd.argument()[0] == align);
1373                 break;
1374 #endif
1375         /// We have to handle them since 1.4 blocks all unhandled actions
1376         case LFUN_FONT_ITAL:
1377         case LFUN_FONT_BOLD:
1378         case LFUN_FONT_BOLDSYMBOL:
1379         case LFUN_FONT_SANS:
1380         case LFUN_FONT_EMPH:
1381         case LFUN_FONT_TYPEWRITER:
1382         case LFUN_FONT_NOUN:
1383         case LFUN_FONT_ROMAN:
1384         case LFUN_FONT_DEFAULT:
1385                 flag.setEnabled(true);
1386                 break;
1387
1388         // we just need to be in math mode to enable that
1389         case LFUN_MATH_SIZE:
1390         case LFUN_MATH_SPACE:
1391         case LFUN_MATH_EXTERN:
1392                 flag.setEnabled(true);
1393                 break;
1394
1395         case LFUN_FONT_UNDERLINE:
1396         case LFUN_FONT_FRAK:
1397                 flag.setEnabled(currentMode() != TEXT_MODE);
1398                 break;
1399
1400         case LFUN_MATH_FONT_STYLE: {
1401                 bool const textarg =
1402                         arg == "textbf"   || arg == "textsf" ||
1403                         arg == "textrm"   || arg == "textmd" ||
1404                         arg == "textit"   || arg == "textsc" ||
1405                         arg == "textsl"   || arg == "textup" ||
1406                         arg == "texttt"   || arg == "textbb" ||
1407                         arg == "textnormal";
1408                 flag.setEnabled(currentMode() != TEXT_MODE || textarg);
1409                 break;
1410         }
1411
1412         case LFUN_MATH_MODE:
1413                 // forbid "math-mode on" in math mode to prevent irritating
1414                 // behaviour of menu entries (bug 6709)
1415                 flag.setEnabled(currentMode() == TEXT_MODE || arg != "on");
1416                 break;
1417
1418         case LFUN_MATH_INSERT:
1419                 flag.setEnabled(currentMode() != TEXT_MODE);
1420                 break;
1421
1422         case LFUN_MATH_AMS_MATRIX:
1423         case LFUN_MATH_MATRIX:
1424                 flag.setEnabled(currentMode() == MATH_MODE);
1425                 break;
1426
1427         case LFUN_INSET_INSERT: {
1428                 // Don't test createMathInset_fromDialogStr(), since
1429                 // getStatus is not called with a valid reference and the
1430                 // dialog would not be applicable.
1431                 string const name = cmd.getArg(0);
1432                 flag.setEnabled(name == "ref" || name == "mathspace");
1433                 break;
1434         }
1435
1436         case LFUN_DIALOG_SHOW_NEW_INSET: {
1437                 docstring const & name = cmd.argument();
1438                 if (name == "space")
1439                         flag.setEnabled(false);
1440                 break;
1441         }
1442
1443
1444         case LFUN_MATH_DELIM:
1445         case LFUN_MATH_BIGDELIM:
1446                 // Don't do this with multi-cell selections
1447                 flag.setEnabled(cur.selBegin().idx() == cur.selEnd().idx());
1448                 break;
1449
1450         case LFUN_MATH_MACRO_FOLD:
1451         case LFUN_MATH_MACRO_UNFOLD: {
1452                 Cursor it = cur;
1453                 bool found = findMacroToFoldUnfold(it, cmd.action() == LFUN_MATH_MACRO_FOLD);
1454                 flag.setEnabled(found);
1455                 break;
1456         }
1457
1458         case LFUN_SPECIALCHAR_INSERT:
1459         case LFUN_SCRIPT_INSERT:
1460                 // FIXME: These would probably make sense in math-text mode
1461                 flag.setEnabled(false);
1462                 break;
1463
1464         case LFUN_CAPTION_INSERT:
1465                 flag.setEnabled(false);
1466                 break;
1467
1468         case LFUN_SPACE_INSERT: {
1469                 docstring const & name = cmd.argument();
1470                 if (name == "visible")
1471                         flag.setEnabled(false);
1472                 break;
1473         }
1474
1475         case LFUN_INSET_DISSOLVE:
1476                 flag.setEnabled(!asHullInset());
1477                 break;
1478
1479         case LFUN_PASTE: {
1480                 docstring const & name = cmd.argument();
1481                 if (name == "html" || name == "latex")
1482                         flag.setEnabled(false);
1483                 break;
1484         }
1485
1486         case LFUN_MATH_LIMITS: {
1487                 InsetMath * in = 0;
1488                 if (cur.pos() < cur.lastpos() && cur.nextMath().allowsLimitsChange())
1489                         in = &cur.nextMath();
1490                 else if (cur.pos() > 0 && cur.prevMath().allowsLimitsChange())
1491                         in = &cur.prevMath();
1492                 else if (cur.lastpos() > 0 && cur.cell().back()->allowsLimitsChange())
1493                         in = cur.cell().back().nucleus();
1494                 if (in) {
1495                         if (!cmd.argument().empty()) {
1496                                 if (cmd.argument() == "limits")
1497                                         flag.setOnOff(in->limits() == LIMITS);
1498                                 else if (cmd.argument() == "nolimits")
1499                                         flag.setOnOff(in->limits() == NO_LIMITS);
1500                                 else
1501                                         flag.setOnOff(in->limits() == AUTO_LIMITS);
1502                         }
1503                         flag.setEnabled(true);
1504                 } else
1505                         flag.setEnabled(false);
1506                 return true;
1507         }
1508
1509         default:
1510                 ret = false;
1511                 break;
1512         }
1513         return ret;
1514 }
1515
1516
1517 void InsetMathNest::edit(Cursor & cur, bool front, EntryDirection entry_from)
1518 {
1519         cur.push(*this);
1520         bool enter_front = (entry_from == Inset::ENTRY_DIRECTION_LEFT ||
1521                 (entry_from == Inset::ENTRY_DIRECTION_IGNORE && front));
1522         enter_front ? idxFirst(cur) : idxLast(cur);
1523         cur.resetAnchor();
1524         //lyxerr << "InsetMathNest::edit, cur:\n" << cur << endl;
1525 }
1526
1527
1528 Inset * InsetMathNest::editXY(Cursor & cur, int x, int y)
1529 {
1530         int idx_min = -1;
1531         int dist_min = 1000000;
1532         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1533                 int const d = cell(i).dist(cur.bv(), x, y);
1534                 if (d < dist_min) {
1535                         dist_min = d;
1536                         idx_min = i;
1537                 }
1538         }
1539         if (idx_min == -1)
1540                 return this;
1541
1542         MathData & ar = cell(idx_min);
1543         cur.push(*this);
1544         cur.idx() = idx_min;
1545         cur.pos() = ar.x2pos(&cur.bv(), x - ar.xo(cur.bv()));
1546
1547         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1548         if (dist_min == 0) {
1549                 // hit inside cell
1550                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1551                         if (ar[i]->covers(cur.bv(), x, y))
1552                                 return ar[i].nucleus()->editXY(cur, x, y);
1553         }
1554         return this;
1555 }
1556
1557
1558 void InsetMathNest::lfunMousePress(Cursor & cur, FuncRequest & cmd)
1559 {
1560         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1561         BufferView & bv = cur.bv();
1562         if (cmd.button() == mouse_button::button3) {
1563                 // Don't do anything if we right-click a
1564                 // selection, a context menu will popup.
1565                 if (bv.cursor().selection() && cur >= bv.cursor().selectionBegin()
1566                       && cur < bv.cursor().selectionEnd()) {
1567                         cur.noScreenUpdate();
1568                         return;
1569                 }
1570         }
1571
1572         // set cursor after the inset if x is nearer to that position (bug 9748)
1573         cur.moveToClosestEdge(cmd.x(), true);
1574
1575         bool do_selection = cmd.button() == mouse_button::button1
1576                 && cmd.modifier() == ShiftModifier;
1577         bv.mouseSetCursor(cur, do_selection);
1578         if (cmd.button() == mouse_button::button1) {
1579                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1580                 // Update the cursor update flags as needed:
1581                 //
1582                 // Update::Decoration: tells to update the decoration
1583                 //                     (visual box corners that define
1584                 //                     the inset)/
1585                 // Update::FitCursor: adjust the screen to the cursor
1586                 //                    position if needed
1587                 // cur.result().update(): don't overwrite previously set flags.
1588                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor
1589                                 | cur.result().screenUpdate());
1590         } else if (cmd.button() == mouse_button::button2 && lyxrc.mouse_middlebutton_paste) {
1591                 if (cap::selection()) {
1592                         // See comment in Text::dispatch why we do this
1593                         cap::copySelectionToStack();
1594                         cmd = FuncRequest(LFUN_PASTE, "0");
1595                         doDispatch(bv.cursor(), cmd);
1596                 } else {
1597                         MathData ar;
1598                         asArray(theSelection().get(), ar);
1599                         bv.cursor().insert(ar);
1600                 }
1601         }
1602 }
1603
1604
1605 void InsetMathNest::lfunMouseMotion(Cursor & cur, FuncRequest & cmd)
1606 {
1607         // only select with button 1
1608         if (cmd.button() != mouse_button::button1)
1609                 return;
1610
1611         Cursor & bvcur = cur.bv().cursor();
1612
1613         // ignore motions deeper nested than the real anchor
1614         if (!bvcur.realAnchor().hasPart(cur)) {
1615                 cur.undispatched();
1616                 return;
1617         }
1618
1619         // set cursor after the inset if x is nearer to that position (bug 9748)
1620         cur.moveToClosestEdge(cmd.x());
1621
1622         CursorSlice old = bvcur.top();
1623
1624         // We continue with our existing selection or start a new one, so don't
1625         // reset the anchor.
1626         bvcur.setCursor(cur);
1627         // Did we actually move?
1628         if (cur.top() == old)
1629                 // We didn't move one iota, so no need to change selection status
1630                 // or update the screen.
1631                 cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1632         else
1633                 bvcur.setSelection();
1634 }
1635
1636
1637 void InsetMathNest::lfunMouseRelease(Cursor & cur, FuncRequest & cmd)
1638 {
1639         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1640
1641         if (cmd.button() == mouse_button::button1) {
1642                 if (!cur.selection())
1643                         cur.noScreenUpdate();
1644                 else {
1645                         Cursor & bvcur = cur.bv().cursor();
1646                         bvcur.selection(true);
1647                 }
1648                 return;
1649         }
1650
1651         cur.undispatched();
1652 }
1653
1654
1655 bool InsetMathNest::interpretChar(Cursor & cur, char_type const c)
1656 {
1657         // try auto-correction
1658         if (lyxrc.autocorrection_math && cur.pos() != 0
1659                   && math_autocorrect(cur, c))
1660                 return true;
1661
1662         //lyxerr << "interpret 2: '" << c << "'" << endl;
1663         docstring save_selection;
1664         if (c == '^' || c == '_')
1665                 save_selection = grabAndEraseSelection(cur);
1666
1667         cur.clearTargetX();
1668         Buffer * buf = cur.buffer();
1669
1670         // handle macroMode
1671         if (cur.inMacroMode()) {
1672                 docstring name = cur.macroName();
1673
1674                 /// are we currently typing '#1' or '#2' or...?
1675                 if (name == "\\#") {
1676                         cur.backspace();
1677                         int n = c - '0';
1678                         if (n >= 1 && n <= 9)
1679                                 cur.insert(new InsetMathMacroArgument(n));
1680                         return true;
1681                 }
1682
1683                 // do not finish macro for known * commands
1684                 bool star_macro = c == '*'
1685                         && (in_word_set(name.substr(1) + '*')
1686                             || cur.buffer()->getMacro(name.substr(1) + "*", cur, true));
1687                 if (isAlphaASCII(c) || star_macro) {
1688                         cur.activeMacro()->setName(name + docstring(1, c));
1689                         return true;
1690                 }
1691
1692                 // handle 'special char' macros
1693                 if (name == "\\") {
1694                         // remove the '\\'
1695                         if (c == '\\') {
1696                                 cur.backspace();
1697                                 if (currentMode() != InsetMath::MATH_MODE)
1698                                         cur.niceInsert(createInsetMath("textbackslash", buf));
1699                                 else
1700                                         cur.niceInsert(createInsetMath("backslash", buf));
1701                         } else if (c == '^' && currentMode() == InsetMath::MATH_MODE) {
1702                                 cur.backspace();
1703                                 cur.niceInsert(createInsetMath("mathcircumflex", buf));
1704                         } else if (c == '{' || c == '%') {
1705                                 //using the saved selection as argument
1706                                 InsetMathUnknown * p = cur.activeMacro();
1707                                 p->finalize();
1708                                 MathData sel(cur.buffer());
1709                                 asArray(p->selection(), sel);
1710                                 cur.backspace();
1711                                 if (c == '{')
1712                                         cur.niceInsert(MathAtom(new InsetMathBrace(sel)));
1713                                 else
1714                                         cur.niceInsert(MathAtom(new InsetMathComment(sel)));
1715                         } else if (c == '#') {
1716                                 LASSERT(cur.activeMacro(), return false);
1717                                 cur.activeMacro()->setName(name + docstring(1, c));
1718                         } else {
1719                                 cur.backspace();
1720                                 cur.niceInsert(createInsetMath(docstring(1, c), buf));
1721                         }
1722                         return true;
1723                 }
1724
1725                 // One character big delimiters. The others are handled in
1726                 // interpretString().
1727                 latexkeys const * l = in_word_set(name.substr(1));
1728                 if (name[0] == '\\' && l && l->inset == "big") {
1729                         docstring delim;
1730                         switch (c) {
1731                         case '{':
1732                                 delim = from_ascii("\\{");
1733                                 break;
1734                         case '}':
1735                                 delim = from_ascii("\\}");
1736                                 break;
1737                         default:
1738                                 delim = docstring(1, c);
1739                                 break;
1740                         }
1741                         if (InsetMathBig::isBigInsetDelim(delim)) {
1742                                 // name + delim ared a valid InsetMathBig.
1743                                 // We can't use cur.macroModeClose() because
1744                                 // it does not handle delim.
1745                                 InsetMathUnknown * p = cur.activeMacro();
1746                                 p->finalize();
1747                                 --cur.pos();
1748                                 cur.cell().erase(cur.pos());
1749                                 cur.plainInsert(MathAtom(
1750                                         new InsetMathBig(name.substr(1), delim)));
1751                                 return true;
1752                         }
1753                 } else if (name == "\\smash" && c == '[') {
1754                         // We can't use cur.macroModeClose() because
1755                         // it would create an InsetMathPhantom
1756                         InsetMathUnknown * p = cur.activeMacro();
1757                         p->finalize();
1758                         interpretChar(cur, c);
1759                         return true;
1760                 }
1761
1762                 // leave macro mode and try again if necessary
1763                 if (cur.macroModeClose()) {
1764                         MathAtom const atom = cur.prevAtom();
1765                         if (atom->asNestInset() && atom->isActive()) {
1766                                 cur.posBackward();
1767                                 cur.nextInset()->edit(cur, true);
1768                         }
1769                 }
1770                 if (c == '{')
1771                         cur.niceInsert(MathAtom(new InsetMathBrace(buf)));
1772                 else if (c != ' ')
1773                         interpretChar(cur, c);
1774                 return true;
1775         }
1776
1777
1778         // just clear selection on pressing the space bar
1779         if (cur.selection() && c == ' ') {
1780                 cur.selection(false);
1781                 return true;
1782         }
1783
1784         if (c == '\\') {
1785                 //lyxerr << "starting with macro" << endl;
1786                 bool reduced = cap::reduceSelectionToOneCell(cur);
1787                 if (reduced || !cur.selection()) {
1788                         cur.recordUndoInset();
1789                         docstring const safe = cap::grabAndEraseSelection(cur);
1790                         if (!cur.inRegexped())
1791                                 cur.insert(MathAtom(new InsetMathUnknown(from_ascii("\\"), safe, false)));
1792                         else
1793                                 cur.niceInsert(createInsetMath("backslash", buf));
1794                 }
1795                 return true;
1796         }
1797
1798         selClearOrDel(cur);
1799
1800         if (c == '\n') {
1801                 if (currentMode() != InsetMath::MATH_MODE)
1802                         cur.insert(c);
1803                 return true;
1804         }
1805
1806         if (c == ' ') {
1807                 if (currentMode() != InsetMath::MATH_MODE) {
1808                         // insert spaces in text or undecided mode,
1809                         // but suppress direct insertion of two spaces in a row
1810                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1811                         // it is better than nothing...
1812                         if (cur.pos() == 0 || cur.prevAtom()->getChar() != ' ') {
1813                                 cur.insert(c);
1814                                 // FIXME: we have to enable full redraw here because of the
1815                                 // visual box corners that define the inset. If we know for
1816                                 // sure that we stay within the same cell we can optimize for
1817                                 // that using:
1818                                 //cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1819                         }
1820                         return true;
1821                 }
1822                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1823                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1824                         // FIXME: we have to enable full redraw here because of the
1825                         // visual box corners that define the inset. If we know for
1826                         // sure that we stay within the same cell we can optimize for
1827                         // that using:
1828                         //cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1829                         return true;
1830                 }
1831
1832                 if (cur.popForward()) {
1833                         // FIXME: we have to enable full redraw here because of the
1834                         // visual box corners that define the inset. If we know for
1835                         // sure that we stay within the same cell we can optimize for
1836                         // that using:
1837                         //cur.screenUpdateFlags(Update::FitCursor);
1838                         return true;
1839                 }
1840
1841                 // if we are at the very end, leave the formula
1842                 return cur.pos() != cur.lastpos();
1843         }
1844
1845         // These should be treated differently when not in text mode:
1846         if (cur.inRegexped()) {
1847                 switch (c) {
1848                 case '^':
1849                         cur.niceInsert(createInsetMath("mathcircumflex", buf));
1850                         break;
1851                 case '{':
1852                 case '}':
1853                 case '#':
1854                 case '%':
1855                 case '_':
1856                         cur.niceInsert(createInsetMath(docstring(1, c), buf));
1857                         break;
1858                 case '~':
1859                         cur.niceInsert(createInsetMath("sim", buf));
1860                         break;
1861                 default:
1862                         cur.insert(c);
1863                 }
1864                 return true;
1865         } else if (currentMode() != InsetMath::TEXT_MODE) {
1866                 if (c == '_') {
1867                         script(cur, false, save_selection);
1868                         return true;
1869                 }
1870                 if (c == '^') {
1871                         script(cur, true, save_selection);
1872                         return true;
1873                 }
1874                 if (c == '~') {
1875                         cur.niceInsert(createInsetMath("sim", buf));
1876                         return true;
1877                 }
1878                 if (currentMode() == InsetMath::MATH_MODE && Encodings::isUnicodeTextOnly(c)) {
1879                         MathAtom at = createInsetMath("text", buf);
1880                         at.nucleus()->cell(0).push_back(MathAtom(new InsetMathChar(c)));
1881                         cur.insert(at);
1882                         cur.posForward();
1883                         return true;
1884                 }
1885         } else {
1886                 if (c == '^') {
1887                         cur.niceInsert(createInsetMath("textasciicircum", buf));
1888                         return true;
1889                 }
1890                 if (c == '~') {
1891                         cur.niceInsert(createInsetMath("textasciitilde", buf));
1892                         return true;
1893                 }
1894         }
1895
1896         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1897             c == '%' || c == '_') {
1898                 cur.niceInsert(createInsetMath(docstring(1, c), buf));
1899                 return true;
1900         }
1901
1902         // no special circumstances, so insert the character without any fuss
1903         cur.insert(c);
1904         return true;
1905 }
1906
1907
1908 bool InsetMathNest::interpretString(Cursor & cur, docstring const & str)
1909 {
1910         if (str == "\\limits" || str == "\\nolimits") {
1911                 if (cur.pos() > 0 && cur.prevMath().allowsLimitsChange()) {
1912                         cur.prevMath().limits(str == "\\limits" ? LIMITS : NO_LIMITS);
1913                         return true;
1914                 } else {
1915                         cur.message(bformat(_("Cannot apply %1$s here."), str));
1916                         return false;
1917                 }
1918         }
1919         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1920         // possible
1921         if (!cur.empty() && cur.pos() > 0 &&
1922             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1923                 if (InsetMathBig::isBigInsetDelim(str)) {
1924                         docstring prev = asString(cur.cell()[cur.pos() - 1]);
1925                         if (prev[0] == '\\') {
1926                                 prev = prev.substr(1);
1927                                 latexkeys const * l = in_word_set(prev);
1928                                 if (l && l->inset == "big") {
1929                                         cur.recordUndoSelection();
1930                                         cur.cell()[cur.pos() - 1] =
1931                                                 MathAtom(new InsetMathBig(prev, str));
1932                                         return true;
1933                                 }
1934                         }
1935                 }
1936         }
1937         return false;
1938 }
1939
1940
1941 bool InsetMathNest::script(Cursor & cur, bool up)
1942 {
1943         return script(cur, up, docstring());
1944 }
1945
1946
1947 bool InsetMathNest::script(Cursor & cur, bool up,
1948                 docstring const & save_selection)
1949 {
1950         // Hack to get \^ and \_ working
1951         //lyxerr << "handling script: up: " << up << endl;
1952         if (cur.inMacroMode() && cur.macroName() == "\\") {
1953                 if (up)
1954                         cur.niceInsert(createInsetMath("mathcircumflex", cur.buffer()));
1955                 else
1956                         interpretChar(cur, '_');
1957                 return true;
1958         }
1959
1960         cur.macroModeClose();
1961         if (asScriptInset() && cur.idx() == 0) {
1962                 // we are in a nucleus of a script inset, move to _our_ script
1963                 InsetMathScript * inset = asScriptInset();
1964                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1965                 inset->ensure(up);
1966                 cur.idx() = inset->idxOfScript(up);
1967                 cur.pos() = 0;
1968         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1969                 --cur.pos();
1970                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1971                 cur.push(*inset);
1972                 inset->ensure(up);
1973                 cur.idx() = inset->idxOfScript(up);
1974                 cur.pos() = cur.lastpos();
1975         } else {
1976                 // convert the thing to our left to a scriptinset or create a new
1977                 // one if in the very first position of the array
1978                 if (cur.pos() == 0) {
1979                         //lyxerr << "new scriptinset" << endl;
1980                         cur.insert(new InsetMathScript(buffer_, up));
1981                 } else {
1982                         //lyxerr << "converting prev atom " << endl;
1983                         cur.prevAtom() = MathAtom(new InsetMathScript(buffer_, cur.prevAtom(), up));
1984                 }
1985                 --cur.pos();
1986                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1987                 // See comment in MathParser.cpp for special handling of {}-bases
1988
1989                 cur.push(*inset);
1990                 cur.idx() = 1;
1991                 cur.pos() = 0;
1992         }
1993         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1994         cur.niceInsert(save_selection);
1995         cur.resetAnchor();
1996         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1997         return true;
1998 }
1999
2000
2001 bool InsetMathNest::completionSupported(Cursor const & cur) const
2002 {
2003         return cur.inMacroMode();
2004 }
2005
2006
2007 bool InsetMathNest::inlineCompletionSupported(Cursor const & cur) const
2008 {
2009         return cur.inMacroMode();
2010 }
2011
2012
2013 bool InsetMathNest::automaticInlineCompletion() const
2014 {
2015         return lyxrc.completion_inline_math;
2016 }
2017
2018
2019 bool InsetMathNest::automaticPopupCompletion() const
2020 {
2021         return lyxrc.completion_popup_math;
2022 }
2023
2024
2025 CompletionList const *
2026 InsetMathNest::createCompletionList(Cursor const & cur) const
2027 {
2028         if (!cur.inMacroMode())
2029                 return nullptr;
2030
2031         return new MathCompletionList(cur);
2032 }
2033
2034
2035 docstring InsetMathNest::completionPrefix(Cursor const & cur) const
2036 {
2037         if (!cur.inMacroMode())
2038                 return docstring();
2039
2040         return cur.activeMacro()->name();
2041 }
2042
2043
2044 bool InsetMathNest::insertCompletion(Cursor & cur, docstring const & s,
2045                                      bool finished)
2046 {
2047         if (!cur.inMacroMode())
2048                 return false;
2049
2050         // append completion to active macro
2051         InsetMathUnknown * inset = cur.activeMacro();
2052         inset->setName(inset->name() + s);
2053
2054         // finish macro
2055         if (finished) {
2056 #if 0
2057                 // FIXME: this creates duplicates in the completion popup
2058                 // which looks ugly. Moreover the changes the list lengths
2059                 // which seems to confuse the popup as well.
2060                 MathCompletionList::addToFavorites(inset->name());
2061 #endif
2062                 lyx::dispatch(FuncRequest(LFUN_SELF_INSERT, " "));
2063         }
2064
2065         return true;
2066 }
2067
2068
2069 void InsetMathNest::completionPosAndDim(Cursor const & cur, int & x, int & y,
2070                                         Dimension & dim) const
2071 {
2072         Inset const * inset = cur.activeMacro();
2073         if (!inset)
2074                 return;
2075
2076         // get inset dimensions
2077         dim = cur.bv().coordCache().insets().dim(inset);
2078         // FIXME: these 3 are no accurate, but should depend on the font.
2079         // Now the popup jumps down if you enter a char with descent > 0.
2080         dim.des += 3;
2081         dim.asc += 3;
2082
2083         // and position
2084         Point xy = cur.bv().coordCache().insets().xy(inset);
2085         x = xy.x_;
2086         y = xy.y_;
2087 }
2088
2089
2090 ////////////////////////////////////////////////////////////////////
2091
2092 MathCompletionList::MathCompletionList(Cursor const & cur)
2093 {
2094         // fill it with macros from the buffer
2095         MacroNameSet macros;
2096         cur.buffer()->listMacroNames(macros);
2097         MacroNameSet::const_iterator it;
2098         for (it = macros.begin(); it != macros.end(); ++it) {
2099                 if (cur.buffer()->getMacro(*it, cur, false))
2100                         locals.push_back("\\" + *it);
2101         }
2102         sort(locals.begin(), locals.end());
2103
2104         if (!globals.empty())
2105                 return;
2106
2107         // fill in global macros
2108         macros.clear();
2109         MacroTable::globalMacros().getMacroNames(macros, false);
2110         //lyxerr << "Globals completion macros: ";
2111         for (it = macros.begin(); it != macros.end(); ++it) {
2112                 //lyxerr << "\\" + *it << " ";
2113                 globals.push_back("\\" + *it);
2114         }
2115         //lyxerr << std::endl;
2116
2117         // fill in global commands
2118         globals.push_back(from_ascii("\\boxed"));
2119         globals.push_back(from_ascii("\\fbox"));
2120         globals.push_back(from_ascii("\\framebox"));
2121         globals.push_back(from_ascii("\\makebox"));
2122         globals.push_back(from_ascii("\\kern"));
2123         globals.push_back(from_ascii("\\xhookrightarrow"));
2124         globals.push_back(from_ascii("\\xhookleftarrow"));
2125         globals.push_back(from_ascii("\\xrightarrow"));
2126         globals.push_back(from_ascii("\\xRightarrow"));
2127         globals.push_back(from_ascii("\\xrightharpoondown"));
2128         globals.push_back(from_ascii("\\xrightharpoonup"));
2129         globals.push_back(from_ascii("\\xrightleftharpoons"));
2130         globals.push_back(from_ascii("\\xleftarrow"));
2131         globals.push_back(from_ascii("\\xLeftarrow"));
2132         globals.push_back(from_ascii("\\xleftharpoondown"));
2133         globals.push_back(from_ascii("\\xleftharpoonup"));
2134         globals.push_back(from_ascii("\\xleftrightarrow"));
2135         globals.push_back(from_ascii("\\xLeftrightarrow"));
2136         globals.push_back(from_ascii("\\xleftrightharpoons"));
2137         globals.push_back(from_ascii("\\xmapsto"));
2138         globals.push_back(from_ascii("\\split"));
2139         globals.push_back(from_ascii("\\gathered"));
2140         globals.push_back(from_ascii("\\aligned"));
2141         globals.push_back(from_ascii("\\alignedat"));
2142         globals.push_back(from_ascii("\\cases"));
2143         globals.push_back(from_ascii("\\substack"));
2144         globals.push_back(from_ascii("\\xymatrix"));
2145         globals.push_back(from_ascii("\\Diagram"));
2146         globals.push_back(from_ascii("\\subarray"));
2147         globals.push_back(from_ascii("\\array"));
2148         globals.push_back(from_ascii("\\sqrt"));
2149         globals.push_back(from_ascii("\\root"));
2150         globals.push_back(from_ascii("\\tabular"));
2151         globals.push_back(from_ascii("\\sideset"));
2152         globals.push_back(from_ascii("\\stackrel"));
2153         globals.push_back(from_ascii("\\stackrelthree"));
2154         globals.push_back(from_ascii("\\binom"));
2155         globals.push_back(from_ascii("\\choose"));
2156         globals.push_back(from_ascii("\\brace"));
2157         globals.push_back(from_ascii("\\brack"));
2158         globals.push_back(from_ascii("\\frac"));
2159         globals.push_back(from_ascii("\\over"));
2160         globals.push_back(from_ascii("\\nicefrac"));
2161         globals.push_back(from_ascii("\\unitfrac"));
2162         globals.push_back(from_ascii("\\unitfracthree"));
2163         globals.push_back(from_ascii("\\unitone"));
2164         globals.push_back(from_ascii("\\unittwo"));
2165         globals.push_back(from_ascii("\\infer"));
2166         globals.push_back(from_ascii("\\atop"));
2167         globals.push_back(from_ascii("\\lefteqn"));
2168         globals.push_back(from_ascii("\\boldsymbol"));
2169         globals.push_back(from_ascii("\\bm"));
2170         globals.push_back(from_ascii("\\color"));
2171         globals.push_back(from_ascii("\\normalcolor"));
2172         globals.push_back(from_ascii("\\textcolor"));
2173         globals.push_back(from_ascii("\\cfrac"));
2174         globals.push_back(from_ascii("\\cfracleft"));
2175         globals.push_back(from_ascii("\\cfracright"));
2176         globals.push_back(from_ascii("\\dfrac"));
2177         globals.push_back(from_ascii("\\tfrac"));
2178         globals.push_back(from_ascii("\\dbinom"));
2179         globals.push_back(from_ascii("\\tbinom"));
2180         globals.push_back(from_ascii("\\hphantom"));
2181         globals.push_back(from_ascii("\\phantom"));
2182         globals.push_back(from_ascii("\\vphantom"));
2183         globals.push_back(from_ascii("\\cancel"));
2184         globals.push_back(from_ascii("\\bcancel"));
2185         globals.push_back(from_ascii("\\xcancel"));
2186         globals.push_back(from_ascii("\\cancelto"));
2187         globals.push_back(from_ascii("\\smash"));
2188         globals.push_back(from_ascii("\\mathclap"));
2189         globals.push_back(from_ascii("\\mathllap"));
2190         globals.push_back(from_ascii("\\mathrlap"));
2191         globals.push_back(from_ascii("\\ensuremath"));
2192         MathWordList const & words = mathedWordList();
2193         MathWordList::const_iterator it2;
2194         //lyxerr << "Globals completion commands: ";
2195         for (it2 = words.begin(); it2 != words.end(); ++it2) {
2196                 if (it2->second.inset != "macro" && !it2->second.hidden) {
2197                         // macros are already read from MacroTable::globalMacros()
2198                         globals.push_back('\\' + it2->first);
2199                         //lyxerr << '\\' + it2->first << ' ';
2200                 }
2201         }
2202         //lyxerr << std::endl;
2203         sort(globals.begin(), globals.end());
2204 }
2205
2206
2207 MathCompletionList::~MathCompletionList()
2208 {
2209 }
2210
2211
2212 size_type MathCompletionList::size() const
2213 {
2214         return locals.size() + globals.size();
2215 }
2216
2217
2218 docstring const & MathCompletionList::data(size_t idx) const
2219 {
2220         size_t lsize = locals.size();
2221         if (idx >= lsize)
2222                 return globals[idx - lsize];
2223         else
2224                 return locals[idx];
2225 }
2226
2227
2228 std::string MathCompletionList::icon(size_t idx) const
2229 {
2230         // get the latex command
2231         docstring cmd;
2232         size_t lsize = locals.size();
2233         if (idx >= lsize)
2234                 cmd = globals[idx - lsize];
2235         else
2236                 cmd = locals[idx];
2237
2238         // get the icon name by stripping the backslash
2239         docstring icon_name = frontend::Application::mathIcon(cmd.substr(1));
2240         if (icon_name.empty())
2241                 return std::string();
2242         return "math/" + to_utf8(icon_name);
2243 }
2244
2245 std::vector<docstring> MathCompletionList::globals;
2246
2247 } // namespace lyx