src/mathed/InsetMathNest.C

   1 /**
   2  * \file InsetMathNest.C
   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 "InsetMathBig.h"
  17 #include "InsetMathBox.h"
  18 #include "InsetMathBrace.h"
  19 #include "InsetMathColor.h"
  20 #include "InsetMathComment.h"
  21 #include "MathData.h"
  22 #include "InsetMathDelim.h"
  23 #include "MathFactory.h"
  24 #include "InsetMathHull.h"
  25 #include "MathMLStream.h"
  26 #include "MathMacroArgument.h"
  27 //#include "InsetMathMBox.h"
  28 #include "MathParser.h"
  29 #include "InsetMathScript.h"
  30 #include "InsetMathSpace.h"
  31 #include "InsetMathSymbol.h"
  32 #include "MathSupport.h"
  33 #include "InsetMathUnknown.h"
  34 #include "InsetMathRef.h"
  35
  36 #include "BufferView.h"
  37 #include "CutAndPaste.h"
  38 #include "FuncStatus.h"
  39 #include "LColor.h"
  40 #include "bufferview_funcs.h"
  41 #include "coordcache.h"
  42 #include "cursor.h"
  43 #include "debug.h"
  44 #include "dispatchresult.h"
  45 #include "funcrequest.h"
  46 #include "gettext.h"
  47 #include "outputparams.h"
  48 #include "undo.h"
  49
  50 #include "support/lstrings.h"
  51
  52 #include "frontends/Dialogs.h"
  53 #include "frontends/Gui.h"
  54 #include "frontends/LyXView.h"
  55 #include "frontends/Painter.h"
  56 #include "frontends/Selection.h"
  57 #include "frontends/nullpainter.h"
  58
  59 #include <sstream>
  60
  61 using lyx::cap::copySelection;
  62 using lyx::cap::grabAndEraseSelection;
  63 using lyx::cap::cutSelection;
  64 using lyx::cap::replaceSelection;
  65 using lyx::cap::selClearOrDel;
  66
  67 using lyx::frontend::Gui;
  68 using lyx::frontend::Clipboard;
  69
  70 using std::endl;
  71 using std::string;
  72 using std::istringstream;
  73
  74
  75 InsetMathNest::InsetMathNest(idx_type nargs)
  76         : cells_(nargs), lock_(false)
  77 {}
  78
  79
  80 InsetMath::idx_type InsetMathNest::nargs() const
  81 {
  82         return cells_.size();
  83 }
  84
  85
  86 MathArray & InsetMathNest::cell(idx_type i)
  87 {
  88         return cells_[i];
  89 }
  90
  91
  92 MathArray const & InsetMathNest::cell(idx_type i) const
  93 {
  94         return cells_[i];
  95 }
  96
  97
  98 void InsetMathNest::cursorPos(CursorSlice const & sl, bool /*boundary*/,
  99         int & x, int & y) const
 100 {
 101 // FIXME: This is a hack. Ideally, the coord cache should not store
 102 // absolute positions, but relative ones. This would mean to call
 103 // setXY() not in MathArray::draw(), but in the parent insets' draw()
 104 // with the correctly adjusted x,y values. But this means that we'd have
 105 // to touch all (math)inset's draw() methods. Right now, we'll store
 106 // absolute value, and make them here relative, only to make them
 107 // absolute again when actually drawing the cursor. What a mess.
 108         BOOST_ASSERT(ptr_cmp(&sl.inset(), this));
 109         MathArray const & ar = sl.cell();
 110         if (!theCoords.getArrays().has(&ar)) {
 111                 // this can (semi-)legally happen if we just created this cell
 112                 // and it never has been drawn before. So don't ASSERT.
 113                 //lyxerr << "no cached data for array " << &ar << endl;
 114                 x = 0;
 115                 y = 0;
 116                 return;
 117         }
 118         Point const pt = theCoords.getArrays().xy(&ar);
 119         if (!theCoords.getInsets().has(this)) {
 120                 // same as above
 121                 //lyxerr << "no cached data for inset " << this << endl;
 122                 x = 0;
 123                 y = 0;
 124                 return;
 125         }
 126         Point const pt2 = theCoords.getInsets().xy(this);
 127         //lyxerr << "retrieving position cache for MathArray "
 128         //      << pt.x_ << ' ' << pt.y_ << std::endl;
 129         x = pt.x_ - pt2.x_ + ar.pos2x(sl.pos());
 130         y = pt.y_ - pt2.y_;
 131 //      lyxerr << "pt.y_ : " << pt.y_ << " pt2_.y_ : " << pt2.y_
 132 //              << " asc: " << ascent() << "  des: " << descent()
 133 //              << " ar.asc: " << ar.ascent() << " ar.des: " << ar.descent() << endl;
 134         // move cursor visually into empty cells ("blue rectangles");
 135         if (ar.empty())
 136                 x += 2;
 137 }
 138
 139
 140 void InsetMathNest::metrics(MetricsInfo const & mi) const
 141 {
 142         MetricsInfo m = mi;
 143         for (idx_type i = 0, n = nargs(); i != n; ++i)
 144                 cell(i).metrics(m);
 145 }
 146
 147
 148 bool InsetMathNest::idxNext(LCursor & cur) const
 149 {
 150         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 151         if (cur.idx() == cur.lastidx())
 152                 return false;
 153         ++cur.idx();
 154         cur.pos() = 0;
 155         return true;
 156 }
 157
 158
 159 bool InsetMathNest::idxRight(LCursor & cur) const
 160 {
 161         return idxNext(cur);
 162 }
 163
 164
 165 bool InsetMathNest::idxPrev(LCursor & cur) const
 166 {
 167         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 168         if (cur.idx() == 0)
 169                 return false;
 170         --cur.idx();
 171         cur.pos() = cur.lastpos();
 172         return true;
 173 }
 174
 175
 176 bool InsetMathNest::idxLeft(LCursor & cur) const
 177 {
 178         return idxPrev(cur);
 179 }
 180
 181
 182 bool InsetMathNest::idxFirst(LCursor & cur) const
 183 {
 184         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 185         if (nargs() == 0)
 186                 return false;
 187         cur.idx() = 0;
 188         cur.pos() = 0;
 189         return true;
 190 }
 191
 192
 193 bool InsetMathNest::idxLast(LCursor & cur) const
 194 {
 195         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 196         if (nargs() == 0)
 197                 return false;
 198         cur.idx() = cur.lastidx();
 199         cur.pos() = cur.lastpos();
 200         return true;
 201 }
 202
 203
 204 void InsetMathNest::dump() const
 205 {
 206         WriteStream os(lyxerr);
 207         os << "---------------------------------------------\n";
 208         write(os);
 209         os << "\n";
 210         for (idx_type i = 0, n = nargs(); i != n; ++i)
 211                 os << cell(i) << "\n";
 212         os << "---------------------------------------------\n";
 213 }
 214
 215
 216 void InsetMathNest::draw(PainterInfo & pi, int x, int y) const
 217 {
 218 #if 0
 219         if (lock_)
 220                 pi.pain.fillRectangle(x, y - ascent(), width(), height(),
 221                                         LColor::mathlockbg);
 222 #endif
 223         setPosCache(pi, x, y);
 224 }
 225
 226
 227 void InsetMathNest::drawSelection(PainterInfo & pi, int x, int y) const
 228 {
 229         // this should use the x/y values given, not the cached values
 230         LCursor & cur = pi.base.bv->cursor();
 231         if (!cur.selection())
 232                 return;
 233         if (!ptr_cmp(&cur.inset(), this))
 234                 return;
 235
 236         // FIXME: hack to get position cache warm
 237         static lyx::frontend::NullPainter nop;
 238         PainterInfo pinop(pi);
 239         pinop.pain = nop;
 240         draw(pinop, x, y);
 241
 242         CursorSlice s1 = cur.selBegin();
 243         CursorSlice s2 = cur.selEnd();
 244         //lyxerr << "InsetMathNest::drawing selection: "
 245         //      << " s1: " << s1 << " s2: " << s2 << endl;
 246         if (s1.idx() == s2.idx()) {
 247                 MathArray const & c = cell(s1.idx());
 248                 int x1 = c.xo() + c.pos2x(s1.pos());
 249                 int y1 = c.yo() - c.ascent();
 250                 int x2 = c.xo() + c.pos2x(s2.pos());
 251                 int y2 = c.yo() + c.descent();
 252                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, LColor::selection);
 253         //lyxerr << "InsetMathNest::drawing selection 3: "
 254         //      << " x1: " << x1 << " x2: " << x2
 255         //      << " y1: " << y1 << " y2: " << y2 << endl;
 256         } else {
 257                 for (idx_type i = 0; i < nargs(); ++i) {
 258                         if (idxBetween(i, s1.idx(), s2.idx())) {
 259                                 MathArray const & c = cell(i);
 260                                 int x1 = c.xo();
 261                                 int y1 = c.yo() - c.ascent();
 262                                 int x2 = c.xo() + c.width();
 263                                 int y2 = c.yo() + c.descent();
 264                                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, LColor::selection);
 265                         }
 266                 }
 267         }
 268 }
 269
 270
 271 void InsetMathNest::validate(LaTeXFeatures & features) const
 272 {
 273         for (idx_type i = 0; i < nargs(); ++i)
 274                 cell(i).validate(features);
 275 }
 276
 277
 278 void InsetMathNest::replace(ReplaceData & rep)
 279 {
 280         for (idx_type i = 0; i < nargs(); ++i)
 281                 cell(i).replace(rep);
 282 }
 283
 284
 285 bool InsetMathNest::contains(MathArray const & ar) const
 286 {
 287         for (idx_type i = 0; i < nargs(); ++i)
 288                 if (cell(i).contains(ar))
 289                         return true;
 290         return false;
 291 }
 292
 293
 294 bool InsetMathNest::lock() const
 295 {
 296         return lock_;
 297 }
 298
 299
 300 void InsetMathNest::lock(bool l)
 301 {
 302         lock_ = l;
 303 }
 304
 305
 306 bool InsetMathNest::isActive() const
 307 {
 308         return nargs() > 0;
 309 }
 310
 311
 312 MathArray InsetMathNest::glue() const
 313 {
 314         MathArray ar;
 315         for (size_t i = 0; i < nargs(); ++i)
 316                 ar.append(cell(i));
 317         return ar;
 318 }
 319
 320
 321 void InsetMathNest::write(WriteStream & os) const
 322 {
 323         os << '\\' << name().c_str();
 324         for (size_t i = 0; i < nargs(); ++i)
 325                 os << '{' << cell(i) << '}';
 326         if (nargs() == 0)
 327                 os.pendingSpace(true);
 328         if (lock_ && !os.latex()) {
 329                 os << "\\lyxlock";
 330                 os.pendingSpace(true);
 331         }
 332 }
 333
 334
 335 void InsetMathNest::normalize(NormalStream & os) const
 336 {
 337         os << '[' << name().c_str();
 338         for (size_t i = 0; i < nargs(); ++i)
 339                 os << ' ' << cell(i);
 340         os << ']';
 341 }
 342
 343
 344 int InsetMathNest::latex(Buffer const &, std::ostream & os,
 345                         OutputParams const & runparams) const
 346 {
 347         WriteStream wi(os, runparams.moving_arg, true);
 348         write(wi);
 349         return wi.line();
 350 }
 351
 352
 353 bool InsetMathNest::notifyCursorLeaves(LCursor & /*cur*/)
 354 {
 355 #ifdef WITH_WARNINGS
 356 #warning look here
 357 #endif
 358 #if 0
 359         MathArray & ar = cur.cell();
 360         // remove base-only "scripts"
 361         for (pos_type i = 0; i + 1 < ar.size(); ++i) {
 362                 InsetMathScript * p = operator[](i).nucleus()->asScriptInset();
 363                 if (p && p->nargs() == 1) {
 364                         MathArray ar = p->nuc();
 365                         erase(i);
 366                         insert(i, ar);
 367                         cur.adjust(i, ar.size() - 1);
 368                 }
 369         }
 370
 371         // glue adjacent font insets of the same kind
 372         for (pos_type i = 0; i + 1 < size(); ++i) {
 373                 InsetMathFont * p = operator[](i).nucleus()->asFontInset();
 374                 InsetMathFont const * q = operator[](i + 1)->asFontInset();
 375                 if (p && q && p->name() == q->name()) {
 376                         p->cell(0).append(q->cell(0));
 377                         erase(i + 1);
 378                         cur.adjust(i, -1);
 379                 }
 380         }
 381 #endif
 382         return false;
 383 }
 384
 385
 386 void InsetMathNest::handleFont
 387         (LCursor & cur, string const & arg, string const & font)
 388 {
 389         // this whole function is a hack and won't work for incremental font
 390         // changes...
 391         recordUndo(cur, Undo::ATOMIC);
 392
 393         if (cur.inset().asInsetMath()->name() == font)
 394                 cur.handleFont(font);
 395         else {
 396                 cur.handleNest(createInsetMath(font));
 397                 cur.insert(arg);
 398         }
 399 }
 400
 401
 402 void InsetMathNest::handleFont2(LCursor & cur, string const & arg)
 403 {
 404         recordUndo(cur, Undo::ATOMIC);
 405         LyXFont font;
 406         bool b;
 407         bv_funcs::string2font(arg, font, b);
 408         if (font.color() != LColor::inherit) {
 409                 MathAtom at = MathAtom(new InsetMathColor(true, font.color()));
 410                 cur.handleNest(at, 0);
 411         }
 412 }
 413
 414
 415 void InsetMathNest::doDispatch(LCursor & cur, FuncRequest & cmd)
 416 {
 417         //lyxerr << "InsetMathNest: request: " << cmd << std::endl;
 418         //CursorSlice sl = cur.current();
 419
 420         switch (cmd.action) {
 421
 422         case LFUN_PASTE: {
 423                 recordUndo(cur);
 424                 cur.message(_("Paste"));
 425                 replaceSelection(cur);
 426                 size_t n = 0;
 427                 istringstream is(lyx::to_utf8(cmd.argument()));
 428                 is >> n;
 429                 string const selection = lyx::cap::getSelection(cur.buffer(), n);
 430                 cur.niceInsert(selection);
 431                 cur.clearSelection(); // bug 393
 432                 cur.bv().switchKeyMap();
 433                 finishUndo();
 434                 break;
 435         }
 436
 437         case LFUN_CUT:
 438                 recordUndo(cur);
 439                 cutSelection(cur, true, true);
 440                 cur.message(_("Cut"));
 441                 // Prevent stale position >= size crash
 442                 // Probably not necessary anymore, see eraseSelection (gb 2005-10-09)
 443                 cur.normalize();
 444                 break;
 445
 446         case LFUN_COPY:
 447                 copySelection(cur);
 448                 // FIXME UNICODE
 449                 cur.message(_("Copy"));
 450                 break;
 451
 452         case LFUN_MOUSE_PRESS:
 453                 lfunMousePress(cur, cmd);
 454                 break;
 455
 456         case LFUN_MOUSE_MOTION:
 457                 lfunMouseMotion(cur, cmd);
 458                 break;
 459
 460         case LFUN_MOUSE_RELEASE:
 461                 lfunMouseRelease(cur, cmd);
 462                 break;
 463
 464         case LFUN_FINISHED_LEFT:
 465                 cur.bv().cursor() = cur;
 466                 break;
 467
 468         case LFUN_FINISHED_RIGHT:
 469                 ++cur.pos();
 470                 cur.bv().cursor() = cur;
 471                 break;
 472
 473         case LFUN_FINISHED_UP:
 474                 cur.bv().cursor() = cur;
 475                 break;
 476
 477         case LFUN_FINISHED_DOWN:
 478                 ++cur.pos();
 479                 cur.bv().cursor() = cur;
 480                 break;
 481
 482         case LFUN_CHAR_FORWARD_SELECT:
 483         case LFUN_CHAR_FORWARD:
 484                 cur.selHandle(cmd.action == LFUN_CHAR_FORWARD_SELECT);
 485                 cur.autocorrect() = false;
 486                 cur.clearTargetX();
 487                 cur.macroModeClose();
 488                 if (cur.pos() != cur.lastpos() && cur.openable(cur.nextAtom())) {
 489                         cur.pushLeft(*cur.nextAtom().nucleus());
 490                         cur.inset().idxFirst(cur);
 491                 } else if (cur.posRight() || idxRight(cur)
 492                         || cur.popRight() || cur.selection())
 493                         ;
 494                 else {
 495                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 496                         cur.undispatched();
 497                 }
 498                 break;
 499
 500         case LFUN_CHAR_BACKWARD_SELECT:
 501         case LFUN_CHAR_BACKWARD:
 502                 cur.selHandle(cmd.action == LFUN_CHAR_BACKWARD_SELECT);
 503                 cur.autocorrect() = false;
 504                 cur.clearTargetX();
 505                 cur.macroModeClose();
 506                 if (cur.pos() != 0 && cur.openable(cur.prevAtom())) {
 507                         cur.posLeft();
 508                         cur.push(*cur.nextAtom().nucleus());
 509                         cur.inset().idxLast(cur);
 510                 } else if (cur.posLeft() || idxLeft(cur)
 511                         || cur.popLeft() || cur.selection())
 512                         ;
 513                 else {
 514                         cmd = FuncRequest(LFUN_FINISHED_LEFT);
 515                         cur.undispatched();
 516                 }
 517                 break;
 518
 519         case LFUN_UP_SELECT:
 520         case LFUN_UP:
 521                 // FIXME Tried to use clearTargetX and macroModeClose, crashed on cur.up()
 522                 if (cur.inMacroMode()) {
 523                         // Make Helge happy
 524                         cur.macroModeClose();
 525                         break;
 526                 }
 527                 cur.selHandle(cmd.action == LFUN_UP_SELECT);
 528                 if (!cur.up()) {
 529                         cmd = FuncRequest(LFUN_FINISHED_UP);
 530                         cur.undispatched();
 531                 }
 532                 // fixes bug 1598. Please check!
 533                 cur.normalize();
 534                 break;
 535
 536         case LFUN_DOWN_SELECT:
 537         case LFUN_DOWN:
 538                 if (cur.inMacroMode()) {
 539                         cur.macroModeClose();
 540                         break;
 541                 }
 542                 cur.selHandle(cmd.action == LFUN_DOWN_SELECT);
 543                 if (!cur.down()) {
 544                         cmd = FuncRequest(LFUN_FINISHED_DOWN);
 545                         cur.undispatched();
 546                 }
 547                 // fixes bug 1598. Please check!
 548                 cur.normalize();
 549                 break;
 550
 551         case LFUN_MOUSE_DOUBLE:
 552         case LFUN_MOUSE_TRIPLE:
 553         case LFUN_WORD_SELECT:
 554                 cur.pos() = 0;
 555                 cur.idx() = 0;
 556                 cur.resetAnchor();
 557                 cur.selection() = true;
 558                 cur.pos() = cur.lastpos();
 559                 cur.idx() = cur.lastidx();
 560                 break;
 561
 562         case LFUN_PARAGRAPH_UP_SELECT:
 563         case LFUN_PARAGRAPH_UP:
 564         case LFUN_PARAGRAPH_DOWN_SELECT:
 565         case LFUN_PARAGRAPH_DOWN:
 566                 break;
 567
 568         case LFUN_LINE_BEGIN_SELECT:
 569         case LFUN_LINE_BEGIN:
 570         case LFUN_WORD_BACKWARD_SELECT:
 571         case LFUN_WORD_BACKWARD:
 572                 cur.selHandle(cmd.action == LFUN_WORD_BACKWARD_SELECT ||
 573                                 cmd.action == LFUN_LINE_BEGIN_SELECT);
 574                 cur.macroModeClose();
 575                 if (cur.pos() != 0) {
 576                         cur.pos() = 0;
 577                 } else if (cur.col() != 0) {
 578                         cur.idx() -= cur.col();
 579                         cur.pos() = 0;
 580                 } else if (cur.idx() != 0) {
 581                         cur.idx() = 0;
 582                         cur.pos() = 0;
 583                 } else {
 584                         cmd = FuncRequest(LFUN_FINISHED_LEFT);
 585                         cur.undispatched();
 586                 }
 587                 break;
 588
 589         case LFUN_WORD_FORWARD_SELECT:
 590         case LFUN_WORD_FORWARD:
 591         case LFUN_LINE_END_SELECT:
 592         case LFUN_LINE_END:
 593                 cur.selHandle(cmd.action == LFUN_WORD_FORWARD_SELECT ||
 594                                 cmd.action == LFUN_LINE_END_SELECT);
 595                 cur.macroModeClose();
 596                 cur.clearTargetX();
 597                 if (cur.pos() != cur.lastpos()) {
 598                         cur.pos() = cur.lastpos();
 599                 } else if (ncols() && (cur.col() != cur.lastcol())) {
 600                         cur.idx() = cur.idx() - cur.col() + cur.lastcol();
 601                         cur.pos() = cur.lastpos();
 602                 } else if (cur.idx() != cur.lastidx()) {
 603                         cur.idx() = cur.lastidx();
 604                         cur.pos() = cur.lastpos();
 605                 } else {
 606                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 607                         cur.undispatched();
 608                 }
 609                 break;
 610
 611         case LFUN_SCREEN_UP_SELECT:
 612         case LFUN_SCREEN_UP:
 613                 cmd = FuncRequest(LFUN_FINISHED_LEFT);
 614                 cur.undispatched();
 615                 break;
 616
 617         case LFUN_SCREEN_DOWN_SELECT:
 618         case LFUN_SCREEN_DOWN:
 619                 cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 620                 cur.undispatched();
 621                 break;
 622
 623         case LFUN_CELL_FORWARD:
 624                 cur.inset().idxNext(cur);
 625                 break;
 626
 627         case LFUN_CELL_BACKWARD:
 628                 cur.inset().idxPrev(cur);
 629                 break;
 630
 631         case LFUN_WORD_DELETE_BACKWARD:
 632         case LFUN_CHAR_DELETE_BACKWARD:
 633                 if (cur.pos() == 0)
 634                         // May affect external cell:
 635                         recordUndoInset(cur, Undo::ATOMIC);
 636                 else
 637                         recordUndo(cur, Undo::ATOMIC);
 638                 cur.backspace();
 639                 break;
 640
 641         case LFUN_WORD_DELETE_FORWARD:
 642         case LFUN_CHAR_DELETE_FORWARD:
 643                 if (cur.pos() == cur.lastpos())
 644                         // May affect external cell:
 645                         recordUndoInset(cur, Undo::ATOMIC);
 646                 else
 647                         recordUndo(cur, Undo::ATOMIC);
 648                 cur.erase();
 649                 break;
 650
 651         case LFUN_ESCAPE:
 652                 if (cur.selection())
 653                         cur.clearSelection();
 654                 else  {
 655                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 656                         cur.undispatched();
 657                 }
 658                 break;
 659
 660         case LFUN_INSET_TOGGLE:
 661                 recordUndo(cur);
 662                 lock(!lock());
 663                 cur.popRight();
 664                 break;
 665
 666         case LFUN_SELF_INSERT:
 667                 if (cmd.argument().size() != 1) {
 668                         recordUndo(cur);
 669                         string const arg = lyx::to_utf8(cmd.argument());
 670                         if (!interpret(cur, arg))
 671                                 cur.insert(arg);
 672                         break;
 673                 }
 674                 // Don't record undo steps if we are in macro mode and
 675                 // cmd.argument is the next character of the macro name.
 676                 // Otherwise we'll get an invalid cursor if we undo after
 677                 // the macro was finished and the macro is a known command,
 678                 // e.g. sqrt. LCursor::macroModeClose replaces in this case
 679                 // the InsetMathUnknown with name "frac" by an empty
 680                 // InsetMathFrac -> a pos value > 0 is invalid.
 681                 // A side effect is that an undo before the macro is finished
 682                 // undoes the complete macro, not only the last character.
 683                 if (!cur.inMacroMode())
 684                         recordUndo(cur);
 685
 686                 // spacial handling of space. If we insert an inset
 687                 // via macro mode, we want to put the cursor inside it
 688                 // if relevant. Think typing "\frac<space>".
 689                 if (cmd.argument()[0] == ' '
 690                     && cur.inMacroMode() && cur.macroName() != "\\"
 691                     && cur.macroModeClose()) {
 692                         MathAtom const atom = cur.prevAtom();
 693                         if (atom->asNestInset() && atom->nargs() > 0) {
 694                                 cur.posLeft();
 695                                 cur.pushLeft(*cur.nextInset());
 696                         }
 697                 // FIXME: Change to
 698                 // } else if (!interpret(cur, cmd.argument()[0])) {
 699                 // when interpret accepts UCS4 characters
 700                 } else if (!interpret(cur, lyx::to_utf8(cmd.argument()))) {
 701                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 702                         cur.undispatched();
 703                 }
 704                 break;
 705
 706         //case LFUN_SERVER_GET_XY:
 707         //      sprintf(dispatch_buffer, "%d %d",);
 708         //      break;
 709
 710         case LFUN_SERVER_SET_XY: {
 711                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 712                 int x = 0;
 713                 int y = 0;
 714                 istringstream is(lyx::to_utf8(cmd.argument()));
 715                 is >> x >> y;
 716                 cur.setScreenPos(x, y);
 717                 break;
 718         }
 719
 720         // Special casing for superscript in case of LyX handling
 721         // dead-keys:
 722         case LFUN_ACCENT_CIRCUMFLEX:
 723                 if (cmd.argument().empty()) {
 724                         // do superscript if LyX handles
 725                         // deadkeys
 726                         recordUndo(cur, Undo::ATOMIC);
 727                         script(cur, true, grabAndEraseSelection(cur));
 728                 }
 729                 break;
 730
 731         case LFUN_ACCENT_UMLAUT:
 732         case LFUN_ACCENT_ACUTE:
 733         case LFUN_ACCENT_GRAVE:
 734         case LFUN_ACCENT_BREVE:
 735         case LFUN_ACCENT_DOT:
 736         case LFUN_ACCENT_MACRON:
 737         case LFUN_ACCENT_CARON:
 738         case LFUN_ACCENT_TILDE:
 739         case LFUN_ACCENT_CEDILLA:
 740         case LFUN_ACCENT_CIRCLE:
 741         case LFUN_ACCENT_UNDERDOT:
 742         case LFUN_ACCENT_TIE:
 743         case LFUN_ACCENT_OGONEK:
 744         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 745                 break;
 746
 747         //  Math fonts
 748         case LFUN_FONT_FREE_APPLY:
 749         case LFUN_FONT_FREE_UPDATE:
 750                 handleFont2(cur, lyx::to_utf8(cmd.argument()));
 751                 break;
 752
 753         case LFUN_FONT_BOLD:
 754                 if (currentMode() == TEXT_MODE)
 755                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textbf");
 756                 else
 757                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathbf");
 758                 break;
 759         case LFUN_FONT_SANS:
 760                 if (currentMode() == TEXT_MODE)
 761                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textsf");
 762                 else
 763                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathsf");
 764                 break;
 765         case LFUN_FONT_EMPH:
 766                 if (currentMode() == TEXT_MODE)
 767                         handleFont(cur, lyx::to_utf8(cmd.argument()), "emph");
 768                 else
 769                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathcal");
 770                 break;
 771         case LFUN_FONT_ROMAN:
 772                 if (currentMode() == TEXT_MODE)
 773                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textrm");
 774                 else
 775                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathrm");
 776                 break;
 777         case LFUN_FONT_CODE:
 778                 if (currentMode() == TEXT_MODE)
 779                         handleFont(cur, lyx::to_utf8(cmd.argument()), "texttt");
 780                 else
 781                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathtt");
 782                 break;
 783         case LFUN_FONT_FRAK:
 784                 handleFont(cur, lyx::to_utf8(cmd.argument()), "mathfrak");
 785                 break;
 786         case LFUN_FONT_ITAL:
 787                 if (currentMode() == TEXT_MODE)
 788                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textit");
 789                 else
 790                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathit");
 791                 break;
 792         case LFUN_FONT_NOUN:
 793                 if (currentMode() == TEXT_MODE)
 794                         // FIXME: should be "noun"
 795                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textsc");
 796                 else
 797                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathbb");
 798                 break;
 799         //case LFUN_FONT_FREE_APPLY:
 800                 handleFont(cur, lyx::to_utf8(cmd.argument()), "textrm");
 801                 break;
 802         case LFUN_FONT_DEFAULT:
 803                 handleFont(cur, lyx::to_utf8(cmd.argument()), "textnormal");
 804                 break;
 805
 806         case LFUN_MATH_MODE: {
 807 #if 1
 808                 // ignore math-mode on when already in math mode
 809                 if (currentMode() == InsetBase::MATH_MODE && cmd.argument() == "on")
 810                         break;
 811                 cur.macroModeClose();
 812                 string const save_selection = grabAndEraseSelection(cur);
 813                 selClearOrDel(cur);
 814                 //cur.plainInsert(MathAtom(new InsetMathMBox(cur.bv())));
 815                 cur.plainInsert(MathAtom(new InsetMathBox("mbox")));
 816                 cur.posLeft();
 817                 cur.pushLeft(*cur.nextInset());
 818                 cur.niceInsert(save_selection);
 819 #else
 820                 if (currentMode() == InsetBase::TEXT_MODE) {
 821                         cur.niceInsert(MathAtom(new InsetMathHull("simple")));
 822                         cur.message(_("create new math text environment ($...$)"));
 823                 } else {
 824                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textrm");
 825                         cur.message(_("entered math text mode (textrm)"));
 826                 }
 827 #endif
 828                 break;
 829         }
 830
 831         case LFUN_MATH_SIZE:
 832 #if 0
 833                 recordUndo(cur);
 834                 cur.setSize(arg);
 835 #endif
 836                 break;
 837
 838         case LFUN_MATH_MATRIX: {
 839                 recordUndo(cur, Undo::ATOMIC);
 840                 unsigned int m = 1;
 841                 unsigned int n = 1;
 842                 string v_align;
 843                 string h_align;
 844                 istringstream is(lyx::to_utf8(cmd.argument()));
 845                 is >> m >> n >> v_align >> h_align;
 846                 if (m < 1)
 847                         m = 1;
 848                 if (n < 1)
 849                         n = 1;
 850                 v_align += 'c';
 851                 cur.niceInsert(
 852                         MathAtom(new InsetMathArray("array", m, n, v_align[0], h_align)));
 853                 break;
 854         }
 855
 856         case LFUN_MATH_DELIM: {
 857                 string ls;
 858                 string rs = lyx::support::split(lyx::to_utf8(cmd.argument()), ls, ' ');
 859                 // Reasonable default values
 860                 if (ls.empty())
 861                         ls = '(';
 862                 if (rs.empty())
 863                         rs = ')';
 864                 recordUndo(cur, Undo::ATOMIC);
 865                 cur.handleNest(MathAtom(new InsetMathDelim(ls, rs)));
 866                 break;
 867         }
 868
 869         case LFUN_MATH_BIGDELIM: {
 870                 string const lname = cmd.getArg(0);
 871                 string const ldelim = cmd.getArg(1);
 872                 string const rname = cmd.getArg(2);
 873                 string const rdelim = cmd.getArg(3);
 874                 latexkeys const * l = in_word_set(lname);
 875                 bool const have_l = l && l->inset == "big" &&
 876                                     InsetMathBig::isBigInsetDelim(ldelim);
 877                 l = in_word_set(rname);
 878                 bool const have_r = l && l->inset == "big" &&
 879                                     InsetMathBig::isBigInsetDelim(rdelim);
 880                 // We mimic LFUN_MATH_DELIM in case we have an empty left
 881                 // or right delimiter.
 882                 if (have_l || have_r) {
 883                         recordUndo(cur, Undo::ATOMIC);
 884                         string const selection = grabAndEraseSelection(cur);
 885                         selClearOrDel(cur);
 886                         if (have_l)
 887                                 cur.insert(MathAtom(new InsetMathBig(lname,
 888                                                                 ldelim)));
 889                         cur.niceInsert(selection);
 890                         if (have_r)
 891                                 cur.insert(MathAtom(new InsetMathBig(rname,
 892                                                                 rdelim)));
 893                 }
 894                 // Don't call cur.undispatched() if we did nothing, this would
 895                 // lead to infinite recursion via LyXText::dispatch().
 896                 break;
 897         }
 898
 899         case LFUN_SPACE_INSERT:
 900         case LFUN_MATH_SPACE:
 901                 recordUndo(cur, Undo::ATOMIC);
 902                 cur.insert(MathAtom(new InsetMathSpace(",")));
 903                 break;
 904
 905         case LFUN_ERT_INSERT:
 906                 // interpret this as if a backslash was typed
 907                 recordUndo(cur, Undo::ATOMIC);
 908                 interpret(cur, '\\');
 909                 break;
 910
 911         case LFUN_MATH_SUBSCRIPT:
 912                 // interpret this as if a _ was typed
 913                 recordUndo(cur, Undo::ATOMIC);
 914                 interpret(cur, '_');
 915                 break;
 916
 917         case LFUN_MATH_SUPERSCRIPT:
 918                 // interpret this as if a ^ was typed
 919                 recordUndo(cur, Undo::ATOMIC);
 920                 interpret(cur, '^');
 921                 break;
 922
 923 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
 924 // handling such that "self-insert" works on "arbitrary stuff" too, and
 925 // math-insert only handles special math things like "matrix".
 926         case LFUN_MATH_INSERT: {
 927                 recordUndo(cur, Undo::ATOMIC);
 928                 if (cmd.argument() == "^" || cmd.argument() == "_")
 929                         interpret(cur, cmd.argument()[0]);
 930                 else
 931                         cur.niceInsert(lyx::to_utf8(cmd.argument()));
 932                 break;
 933                 }
 934
 935         case LFUN_DIALOG_SHOW_NEW_INSET: {
 936                 string const & name = lyx::to_utf8(cmd.argument());
 937                 string data;
 938                 if (name == "ref") {
 939                         RefInset tmp(name);
 940                         data = tmp.createDialogStr(name);
 941                 }
 942                 cur.bv().owner()->getDialogs().show(name, data, 0);
 943                 break;
 944         }
 945
 946         default:
 947                 InsetMathDim::doDispatch(cur, cmd);
 948                 break;
 949         }
 950 }
 951
 952
 953 bool InsetMathNest::getStatus(LCursor & cur, FuncRequest const & cmd,
 954                 FuncStatus & flag) const
 955 {
 956         // the font related toggles
 957         //string tc = "mathnormal";
 958         bool ret = true;
 959         string const arg = lyx::to_utf8(cmd.argument());
 960         switch (cmd.action) {
 961         case LFUN_TABULAR_FEATURE:
 962                 flag.enabled(false);
 963                 break;
 964 #if 0
 965         case LFUN_TABULAR_FEATURE:
 966                 // FIXME: check temporarily disabled
 967                 // valign code
 968                 char align = mathcursor::valign();
 969                 if (align == '\0') {
 970                         enable = false;
 971                         break;
 972                 }
 973                 if (cmd.argument().empty()) {
 974                         flag.clear();
 975                         break;
 976                 }
 977                 if (!contains("tcb", cmd.argument()[0])) {
 978                         enable = false;
 979                         break;
 980                 }
 981                 flag.setOnOff(cmd.argument()[0] == align);
 982                 break;
 983 #endif
 984         /// We have to handle them since 1.4 blocks all unhandled actions
 985         case LFUN_FONT_ITAL:
 986         case LFUN_FONT_BOLD:
 987         case LFUN_FONT_SANS:
 988         case LFUN_FONT_EMPH:
 989         case LFUN_FONT_CODE:
 990         case LFUN_FONT_NOUN:
 991         case LFUN_FONT_ROMAN:
 992         case LFUN_FONT_DEFAULT:
 993                 flag.enabled(true);
 994                 break;
 995         case LFUN_MATH_MUTATE:
 996                 //flag.setOnOff(mathcursor::formula()->hullType() == lyx::to_utf8(cmd.argument()));
 997                 flag.setOnOff(false);
 998                 break;
 999
1000         // we just need to be in math mode to enable that
1001         case LFUN_MATH_SIZE:
1002         case LFUN_MATH_SPACE:
1003         case LFUN_MATH_LIMITS:
1004         case LFUN_MATH_NONUMBER:
1005         case LFUN_MATH_NUMBER:
1006         case LFUN_MATH_EXTERN:
1007                 flag.enabled(true);
1008                 break;
1009
1010         case LFUN_FONT_FRAK:
1011                 flag.enabled(currentMode() != TEXT_MODE);
1012                 break;
1013
1014         case LFUN_MATH_INSERT: {
1015                 bool const textarg =
1016                         arg == "\\textbf"   || arg == "\\textsf" ||
1017                         arg == "\\textrm"   || arg == "\\textmd" ||
1018                         arg == "\\textit"   || arg == "\\textsc" ||
1019                         arg == "\\textsl"   || arg == "\\textup" ||
1020                         arg == "\\texttt"   || arg == "\\textbb" ||
1021                         arg == "\\textnormal";
1022                 flag.enabled(currentMode() != TEXT_MODE || textarg);
1023                 break;
1024         }
1025
1026         case LFUN_MATH_MATRIX:
1027                 flag.enabled(currentMode() == MATH_MODE);
1028                 break;
1029
1030         case LFUN_MATH_DELIM:
1031         case LFUN_MATH_BIGDELIM:
1032                 // Don't do this with multi-cell selections
1033                 flag.enabled(cur.selBegin().idx() == cur.selEnd().idx());
1034                 break;
1035
1036         default:
1037                 ret = false;
1038                 break;
1039         }
1040         return ret;
1041 }
1042
1043
1044 void InsetMathNest::edit(LCursor & cur, bool left)
1045 {
1046         cur.push(*this);
1047         cur.idx() = left ? 0 : cur.lastidx();
1048         cur.pos() = left ? 0 : cur.lastpos();
1049         cur.resetAnchor();
1050         //lyxerr << "InsetMathNest::edit, cur:\n" << cur << endl;
1051 }
1052
1053
1054 InsetBase * InsetMathNest::editXY(LCursor & cur, int x, int y)
1055 {
1056         int idx_min = 0;
1057         int dist_min = 1000000;
1058         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1059                 int const d = cell(i).dist(x, y);
1060                 if (d < dist_min) {
1061                         dist_min = d;
1062                         idx_min = i;
1063                 }
1064         }
1065         MathArray & ar = cell(idx_min);
1066         cur.push(*this);
1067         cur.idx() = idx_min;
1068         cur.pos() = ar.x2pos(x - ar.xo());
1069         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1070         if (dist_min == 0) {
1071                 // hit inside cell
1072                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1073                         if (ar[i]->covers(x, y))
1074                                 return ar[i].nucleus()->editXY(cur, x, y);
1075         }
1076         return this;
1077 }
1078
1079
1080 void InsetMathNest::lfunMousePress(LCursor & cur, FuncRequest & cmd)
1081 {
1082         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1083         BufferView & bv = cur.bv();
1084         if (cmd.button() == mouse_button::button1) {
1085                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1086                 bv.mouseSetCursor(cur);
1087         } else if (cmd.button() == mouse_button::button2) {
1088                 MathArray ar;
1089                 if (cur.selection())
1090                         asArray(lyx::to_utf8(bv.cursor().selectionAsString(false)), ar);
1091                 else
1092                         asArray(lyx::to_utf8(bv.owner()->gui().selection().get()), ar);
1093
1094                 cur.insert(ar);
1095                 bv.mouseSetCursor(cur);
1096         }
1097 }
1098
1099
1100 void InsetMathNest::lfunMouseMotion(LCursor & cur, FuncRequest & cmd)
1101 {
1102         // only select with button 1
1103         if (cmd.button() == mouse_button::button1) {
1104                 LCursor & bvcur = cur.bv().cursor();
1105                 if (bvcur.anchor_.hasPart(cur)) {
1106                         //lyxerr << "## lfunMouseMotion: cursor: " << cur << endl;
1107                         bvcur.setCursor(cur);
1108                         bvcur.selection() = true;
1109                         //lyxerr << "MOTION " << bvcur << endl;
1110                 }
1111                 else {
1112                         cur.undispatched();
1113                 }
1114         }
1115 }
1116
1117
1118 void InsetMathNest::lfunMouseRelease(LCursor & cur, FuncRequest & cmd)
1119 {
1120         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1121
1122         if (cmd.button() == mouse_button::button1) {
1123                 //cur.bv().owner()->gui().selection().put(cur.grabSelection());
1124                 return;
1125         }
1126
1127         if (cmd.button() == mouse_button::button3) {
1128                 // try to dispatch to enclosed insets first
1129                 cur.bv().owner()->getDialogs().show("mathpanel");
1130                 return;
1131         }
1132
1133         cur.undispatched();
1134 }
1135
1136
1137 bool InsetMathNest::interpret(LCursor & cur, char c)
1138 {
1139         //lyxerr << "interpret 2: '" << c << "'" << endl;
1140         string save_selection;
1141         if (c == '^' || c == '_')
1142                 save_selection = grabAndEraseSelection(cur);
1143
1144         cur.clearTargetX();
1145
1146         // handle macroMode
1147         if (cur.inMacroMode()) {
1148                 string name = cur.macroName();
1149
1150                 /// are we currently typing '#1' or '#2' or...?
1151                 if (name == "\\#") {
1152                         cur.backspace();
1153                         int n = c - '0';
1154                         if (n >= 1 && n <= 9)
1155                                 cur.insert(new MathMacroArgument(n));
1156                         return true;
1157                 }
1158
1159                 if (isalpha(c)) {
1160                         cur.activeMacro()->setName(name + c);
1161                         return true;
1162                 }
1163
1164                 // handle 'special char' macros
1165                 if (name == "\\") {
1166                         // remove the '\\'
1167                         if (c == '\\') {
1168                                 cur.backspace();
1169                                 if (currentMode() == InsetMath::TEXT_MODE)
1170                                         cur.niceInsert(createInsetMath("textbackslash"));
1171                                 else
1172                                         cur.niceInsert(createInsetMath("backslash"));
1173                         } else if (c == '{') {
1174                                 cur.backspace();
1175                                 cur.niceInsert(MathAtom(new InsetMathBrace));
1176                         } else if (c == '%') {
1177                                 cur.backspace();
1178                                 cur.niceInsert(MathAtom(new InsetMathComment));
1179                         } else if (c == '#') {
1180                                 BOOST_ASSERT(cur.activeMacro());
1181                                 cur.activeMacro()->setName(name + c);
1182                         } else {
1183                                 cur.backspace();
1184                                 cur.niceInsert(createInsetMath(string(1, c)));
1185                         }
1186                         return true;
1187                 }
1188
1189                 // One character big delimiters. The others are handled in
1190                 // the other interpret() method.
1191                 latexkeys const * l = in_word_set(name.substr(1));
1192                 if (name[0] == '\\' && l && l->inset == "big") {
1193                         string delim;
1194                         switch (c) {
1195                         case '{':
1196                                 delim = "\\{";
1197                                 break;
1198                         case '}':
1199                                 delim = "\\}";
1200                                 break;
1201                         default:
1202                                 delim = string(1, c);
1203                                 break;
1204                         }
1205                         if (InsetMathBig::isBigInsetDelim(delim)) {
1206                                 // name + delim ared a valid InsetMathBig.
1207                                 // We can't use cur.macroModeClose() because
1208                                 // it does not handle delim.
1209                                 InsetMathUnknown * p = cur.activeMacro();
1210                                 p->finalize();
1211                                 --cur.pos();
1212                                 cur.cell().erase(cur.pos());
1213                                 cur.plainInsert(MathAtom(
1214                                         new InsetMathBig(name.substr(1), delim)));
1215                                 return true;
1216                         }
1217                 }
1218
1219                 // leave macro mode and try again if necessary
1220                 cur.macroModeClose();
1221                 if (c == '{')
1222                         cur.niceInsert(MathAtom(new InsetMathBrace));
1223                 else if (c != ' ')
1224                         interpret(cur, c);
1225                 return true;
1226         }
1227
1228         // This is annoying as one has to press <space> far too often.
1229         // Disable it.
1230
1231 #if 0
1232                 // leave autocorrect mode if necessary
1233                 if (autocorrect() && c == ' ') {
1234                         autocorrect() = false;
1235                         return true;
1236                 }
1237 #endif
1238
1239         // just clear selection on pressing the space bar
1240         if (cur.selection() && c == ' ') {
1241                 cur.selection() = false;
1242                 return true;
1243         }
1244
1245         selClearOrDel(cur);
1246
1247         if (c == '\\') {
1248                 //lyxerr << "starting with macro" << endl;
1249                 cur.insert(MathAtom(new InsetMathUnknown("\\", false)));
1250                 return true;
1251         }
1252
1253         if (c == '\n') {
1254                 if (currentMode() == InsetMath::TEXT_MODE)
1255                         cur.insert(c);
1256                 return true;
1257         }
1258
1259         if (c == ' ') {
1260                 if (currentMode() == InsetMath::TEXT_MODE) {
1261                         // insert spaces in text mode,
1262                         // but suppress direct insertion of two spaces in a row
1263                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1264                         // it is better than nothing...
1265                         if (!cur.pos() != 0 || cur.prevAtom()->getChar() != ' ')
1266                                 cur.insert(c);
1267                         return true;
1268                 }
1269                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1270                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1271                         return true;
1272                 }
1273                 if (cur.popRight())
1274                         return true;
1275                 // if are at the very end, leave the formula
1276                 return cur.pos() != cur.lastpos();
1277         }
1278
1279         // These shouldn't work in text mode:
1280         if (currentMode() != InsetMath::TEXT_MODE) {
1281                 if (c == '_') {
1282                         script(cur, false, save_selection);
1283                         return true;
1284                 }
1285                 if (c == '^') {
1286                         script(cur, true, save_selection);
1287                         return true;
1288                 }
1289                 if (c == '~') {
1290                         cur.niceInsert(createInsetMath("sim"));
1291                         return true;
1292                 }
1293         }
1294
1295         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1296             c == '%' || c == '_' || c == '^') {
1297                 cur.niceInsert(createInsetMath(string(1, c)));
1298                 return true;
1299         }
1300
1301
1302         // try auto-correction
1303         //if (autocorrect() && hasPrevAtom() && math_autocorrect(prevAtom(), c))
1304         //      return true;
1305
1306         // no special circumstances, so insert the character without any fuss
1307         cur.insert(c);
1308         cur.autocorrect() = true;
1309         return true;
1310 }
1311
1312
1313 bool InsetMathNest::interpret(LCursor & cur, string const & str)
1314 {
1315         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1316         // possible
1317         if (!cur.empty() && cur.pos() > 0 &&
1318             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1319                 if (InsetMathBig::isBigInsetDelim(str)) {
1320                         string prev = asString(cur.cell()[cur.pos() - 1]);
1321                         if (prev[0] == '\\') {
1322                                 prev = prev.substr(1);
1323                                 latexkeys const * l = in_word_set(prev);
1324                                 if (l && l->inset == "big") {
1325                                         cur.cell()[cur.pos() - 1] =
1326                                                 MathAtom(new InsetMathBig(prev, str));
1327                                         return true;
1328                                 }
1329                         }
1330                 }
1331         }
1332         return false;
1333 }
1334
1335
1336 bool InsetMathNest::script(LCursor & cur, bool up, string const &
1337                 save_selection)
1338 {
1339         // Hack to get \^ and \_ working
1340         //lyxerr << "handling script: up: " << up << endl;
1341         if (cur.inMacroMode() && cur.macroName() == "\\") {
1342                 if (up)
1343                         cur.niceInsert(createInsetMath("mathcircumflex"));
1344                 else
1345                         interpret(cur, '_');
1346                 return true;
1347         }
1348
1349         cur.macroModeClose();
1350         if (asScriptInset() && cur.idx() == 0) {
1351                 // we are in a nucleus of a script inset, move to _our_ script
1352                 InsetMathScript * inset = asScriptInset();
1353                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1354                 inset->ensure(up);
1355                 cur.idx() = inset->idxOfScript(up);
1356                 cur.pos() = 0;
1357         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1358                 --cur.pos();
1359                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1360                 cur.push(*inset);
1361                 inset->ensure(up);
1362                 cur.idx() = inset->idxOfScript(up);
1363                 cur.pos() = cur.lastpos();
1364         } else {
1365                 // convert the thing to our left to a scriptinset or create a new
1366                 // one if in the very first position of the array
1367                 if (cur.pos() == 0) {
1368                         //lyxerr << "new scriptinset" << endl;
1369                         cur.insert(new InsetMathScript(up));
1370                 } else {
1371                         //lyxerr << "converting prev atom " << endl;
1372                         cur.prevAtom() = MathAtom(new InsetMathScript(cur.prevAtom(), up));
1373                 }
1374                 --cur.pos();
1375                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1376                 // special handling of {}-bases
1377                 // is this always correct?
1378                 if (inset->nuc().size() == 1
1379                     && inset->nuc().back()->asBraceInset())
1380                         inset->nuc() = inset->nuc().back()->asNestInset()->cell(0);
1381
1382                 cur.push(*inset);
1383                 cur.idx() = 1;
1384                 cur.pos() = 0;
1385         }
1386         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1387         cur.niceInsert(save_selection);
1388         cur.resetAnchor();
1389         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1390         return true;
1391 }