src/mathed/math_nestinset.C

   1 /**
   2  * \file math_nestinset.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 "math_nestinset.h"
  14
  15 #include "math_arrayinset.h"
  16 #include "math_biginset.h"
  17 #include "math_boxinset.h"
  18 #include "math_braceinset.h"
  19 #include "math_colorinset.h"
  20 #include "math_commentinset.h"
  21 #include "math_data.h"
  22 #include "math_deliminset.h"
  23 #include "math_factory.h"
  24 #include "math_hullinset.h"
  25 #include "math_mathmlstream.h"
  26 #include "math_macroarg.h"
  27 //#include "math_mboxinset.h"
  28 #include "math_parser.h"
  29 #include "math_scriptinset.h"
  30 #include "math_spaceinset.h"
  31 #include "math_symbolinset.h"
  32 #include "math_support.h"
  33 #include "math_unknowninset.h"
  34 #include "ref_inset.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 MathNestInset::MathNestInset(idx_type nargs)
  76         : cells_(nargs), lock_(false)
  77 {}
  78
  79
  80 MathInset::idx_type MathNestInset::nargs() const
  81 {
  82         return cells_.size();
  83 }
  84
  85
  86 MathArray & MathNestInset::cell(idx_type i)
  87 {
  88         return cells_[i];
  89 }
  90
  91
  92 MathArray const & MathNestInset::cell(idx_type i) const
  93 {
  94         return cells_[i];
  95 }
  96
  97
  98 void MathNestInset::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 MathNestInset::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 MathNestInset::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 MathNestInset::idxRight(LCursor & cur) const
 160 {
 161         return idxNext(cur);
 162 }
 163
 164
 165 bool MathNestInset::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 MathNestInset::idxLeft(LCursor & cur) const
 177 {
 178         return idxPrev(cur);
 179 }
 180
 181
 182 bool MathNestInset::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 MathNestInset::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 MathNestInset::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 MathNestInset::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 MathNestInset::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 << "MathNestInset::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 << "MathNestInset::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 MathNestInset::validate(LaTeXFeatures & features) const
 272 {
 273         for (idx_type i = 0; i < nargs(); ++i)
 274                 cell(i).validate(features);
 275 }
 276
 277
 278 void MathNestInset::replace(ReplaceData & rep)
 279 {
 280         for (idx_type i = 0; i < nargs(); ++i)
 281                 cell(i).replace(rep);
 282 }
 283
 284
 285 bool MathNestInset::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 MathNestInset::lock() const
 295 {
 296         return lock_;
 297 }
 298
 299
 300 void MathNestInset::lock(bool l)
 301 {
 302         lock_ = l;
 303 }
 304
 305
 306 bool MathNestInset::isActive() const
 307 {
 308         return nargs() > 0;
 309 }
 310
 311
 312 MathArray MathNestInset::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 MathNestInset::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 MathNestInset::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 MathNestInset::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 MathNestInset::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                 MathScriptInset * 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                 MathFontInset * p = operator[](i).nucleus()->asFontInset();
 374                 MathFontInset 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 MathNestInset::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().asMathInset()->name() == font)
 394                 cur.handleFont(font);
 395         else {
 396                 cur.handleNest(createMathInset(font));
 397                 cur.insert(arg);
 398         }
 399 }
 400
 401
 402 void MathNestInset::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 MathColorInset(true, font.color()));
 410                 cur.handleNest(at, 0);
 411         }
 412 }
 413
 414
 415 void MathNestInset::doDispatch(LCursor & cur, FuncRequest & cmd)
 416 {
 417         //lyxerr << "MathNestInset: 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                 cur.message(_("Copy"));
 449                 break;
 450
 451         case LFUN_MOUSE_PRESS:
 452                 lfunMousePress(cur, cmd);
 453                 break;
 454
 455         case LFUN_MOUSE_MOTION:
 456                 lfunMouseMotion(cur, cmd);
 457                 break;
 458
 459         case LFUN_MOUSE_RELEASE:
 460                 lfunMouseRelease(cur, cmd);
 461                 break;
 462
 463         case LFUN_FINISHED_LEFT:
 464                 cur.bv().cursor() = cur;
 465                 break;
 466
 467         case LFUN_FINISHED_RIGHT:
 468                 ++cur.pos();
 469                 cur.bv().cursor() = cur;
 470                 break;
 471
 472         case LFUN_FINISHED_UP:
 473                 cur.bv().cursor() = cur;
 474                 break;
 475
 476         case LFUN_FINISHED_DOWN:
 477                 ++cur.pos();
 478                 cur.bv().cursor() = cur;
 479                 break;
 480
 481         case LFUN_CHAR_FORWARD_SELECT:
 482         case LFUN_CHAR_FORWARD:
 483                 cur.selHandle(cmd.action == LFUN_CHAR_FORWARD_SELECT);
 484                 cur.autocorrect() = false;
 485                 cur.clearTargetX();
 486                 cur.macroModeClose();
 487                 if (cur.pos() != cur.lastpos() && cur.openable(cur.nextAtom())) {
 488                         cur.pushLeft(*cur.nextAtom().nucleus());
 489                         cur.inset().idxFirst(cur);
 490                 } else if (cur.posRight() || idxRight(cur)
 491                         || cur.popRight() || cur.selection())
 492                         ;
 493                 else {
 494                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 495                         cur.undispatched();
 496                 }
 497                 break;
 498
 499         case LFUN_CHAR_BACKWARD_SELECT:
 500         case LFUN_CHAR_BACKWARD:
 501                 cur.selHandle(cmd.action == LFUN_CHAR_BACKWARD_SELECT);
 502                 cur.autocorrect() = false;
 503                 cur.clearTargetX();
 504                 cur.macroModeClose();
 505                 if (cur.pos() != 0 && cur.openable(cur.prevAtom())) {
 506                         cur.posLeft();
 507                         cur.push(*cur.nextAtom().nucleus());
 508                         cur.inset().idxLast(cur);
 509                 } else if (cur.posLeft() || idxLeft(cur)
 510                         || cur.popLeft() || cur.selection())
 511                         ;
 512                 else {
 513                         cmd = FuncRequest(LFUN_FINISHED_LEFT);
 514                         cur.undispatched();
 515                 }
 516                 break;
 517
 518         case LFUN_UP_SELECT:
 519         case LFUN_UP:
 520                 // FIXME Tried to use clearTargetX and macroModeClose, crashed on cur.up()
 521                 if (cur.inMacroMode()) {
 522                         // Make Helge happy
 523                         cur.macroModeClose();
 524                         break;
 525                 }
 526                 cur.selHandle(cmd.action == LFUN_UP_SELECT);
 527                 if (!cur.up()) {
 528                         cmd = FuncRequest(LFUN_FINISHED_UP);
 529                         cur.undispatched();
 530                 }
 531                 // fixes bug 1598. Please check!
 532                 cur.normalize();
 533                 break;
 534
 535         case LFUN_DOWN_SELECT:
 536         case LFUN_DOWN:
 537                 if (cur.inMacroMode()) {
 538                         cur.macroModeClose();
 539                         break;
 540                 }
 541                 cur.selHandle(cmd.action == LFUN_DOWN_SELECT);
 542                 if (!cur.down()) {
 543                         cmd = FuncRequest(LFUN_FINISHED_DOWN);
 544                         cur.undispatched();
 545                 }
 546                 // fixes bug 1598. Please check!
 547                 cur.normalize();
 548                 break;
 549
 550         case LFUN_MOUSE_DOUBLE:
 551         case LFUN_MOUSE_TRIPLE:
 552         case LFUN_WORD_SELECT:
 553                 cur.pos() = 0;
 554                 cur.idx() = 0;
 555                 cur.resetAnchor();
 556                 cur.selection() = true;
 557                 cur.pos() = cur.lastpos();
 558                 cur.idx() = cur.lastidx();
 559                 break;
 560
 561         case LFUN_PARAGRAPH_UP_SELECT:
 562         case LFUN_PARAGRAPH_UP:
 563         case LFUN_PARAGRAPH_DOWN_SELECT:
 564         case LFUN_PARAGRAPH_DOWN:
 565                 break;
 566
 567         case LFUN_LINE_BEGIN_SELECT:
 568         case LFUN_LINE_BEGIN:
 569         case LFUN_WORD_BACKWARD_SELECT:
 570         case LFUN_WORD_BACKWARD:
 571                 cur.selHandle(cmd.action == LFUN_WORD_BACKWARD_SELECT ||
 572                                 cmd.action == LFUN_LINE_BEGIN_SELECT);
 573                 cur.macroModeClose();
 574                 if (cur.pos() != 0) {
 575                         cur.pos() = 0;
 576                 } else if (cur.col() != 0) {
 577                         cur.idx() -= cur.col();
 578                         cur.pos() = 0;
 579                 } else if (cur.idx() != 0) {
 580                         cur.idx() = 0;
 581                         cur.pos() = 0;
 582                 } else {
 583                         cmd = FuncRequest(LFUN_FINISHED_LEFT);
 584                         cur.undispatched();
 585                 }
 586                 break;
 587
 588         case LFUN_WORD_FORWARD_SELECT:
 589         case LFUN_WORD_FORWARD:
 590         case LFUN_LINE_END_SELECT:
 591         case LFUN_LINE_END:
 592                 cur.selHandle(cmd.action == LFUN_WORD_FORWARD_SELECT ||
 593                                 cmd.action == LFUN_LINE_END_SELECT);
 594                 cur.macroModeClose();
 595                 cur.clearTargetX();
 596                 if (cur.pos() != cur.lastpos()) {
 597                         cur.pos() = cur.lastpos();
 598                 } else if (ncols() && (cur.col() != cur.lastcol())) {
 599                         cur.idx() = cur.idx() - cur.col() + cur.lastcol();
 600                         cur.pos() = cur.lastpos();
 601                 } else if (cur.idx() != cur.lastidx()) {
 602                         cur.idx() = cur.lastidx();
 603                         cur.pos() = cur.lastpos();
 604                 } else {
 605                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 606                         cur.undispatched();
 607                 }
 608                 break;
 609
 610         case LFUN_SCREEN_UP_SELECT:
 611         case LFUN_SCREEN_UP:
 612                 cmd = FuncRequest(LFUN_FINISHED_LEFT);
 613                 cur.undispatched();
 614                 break;
 615
 616         case LFUN_SCREEN_DOWN_SELECT:
 617         case LFUN_SCREEN_DOWN:
 618                 cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 619                 cur.undispatched();
 620                 break;
 621
 622         case LFUN_CELL_FORWARD:
 623                 cur.inset().idxNext(cur);
 624                 break;
 625
 626         case LFUN_CELL_BACKWARD:
 627                 cur.inset().idxPrev(cur);
 628                 break;
 629
 630         case LFUN_WORD_DELETE_BACKWARD:
 631         case LFUN_CHAR_DELETE_BACKWARD:
 632                 if (cur.pos() == 0)
 633                         // May affect external cell:
 634                         recordUndoInset(cur, Undo::ATOMIC);
 635                 else
 636                         recordUndo(cur, Undo::ATOMIC);
 637                 cur.backspace();
 638                 break;
 639
 640         case LFUN_WORD_DELETE_FORWARD:
 641         case LFUN_CHAR_DELETE_FORWARD:
 642                 if (cur.pos() == cur.lastpos())
 643                         // May affect external cell:
 644                         recordUndoInset(cur, Undo::ATOMIC);
 645                 else
 646                         recordUndo(cur, Undo::ATOMIC);
 647                 cur.erase();
 648                 break;
 649
 650         case LFUN_ESCAPE:
 651                 if (cur.selection())
 652                         cur.clearSelection();
 653                 else  {
 654                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 655                         cur.undispatched();
 656                 }
 657                 break;
 658
 659         case LFUN_INSET_TOGGLE:
 660                 recordUndo(cur);
 661                 lock(!lock());
 662                 cur.popRight();
 663                 break;
 664
 665         case LFUN_SELF_INSERT:
 666                 if (cmd.argument().size() != 1) {
 667                         recordUndo(cur);
 668                         string const arg = lyx::to_utf8(cmd.argument());
 669                         if (!interpret(cur, arg))
 670                                 cur.insert(arg);
 671                         break;
 672                 }
 673                 // Don't record undo steps if we are in macro mode and
 674                 // cmd.argument is the next character of the macro name.
 675                 // Otherwise we'll get an invalid cursor if we undo after
 676                 // the macro was finished and the macro is a known command,
 677                 // e.g. sqrt. LCursor::macroModeClose replaces in this case
 678                 // the MathUnknownInset with name "frac" by an empty
 679                 // MathFracInset -> a pos value > 0 is invalid.
 680                 // A side effect is that an undo before the macro is finished
 681                 // undoes the complete macro, not only the last character.
 682                 if (!cur.inMacroMode())
 683                         recordUndo(cur);
 684
 685                 // spacial handling of space. If we insert an inset
 686                 // via macro mode, we want to put the cursor inside it
 687                 // if relevant. Think typing "\frac<space>".
 688                 if (cmd.argument()[0] == ' '
 689                     && cur.inMacroMode() && cur.macroName() != "\\"
 690                     && cur.macroModeClose()) {
 691                         MathAtom const atom = cur.prevAtom();
 692                         if (atom->asNestInset() && atom->nargs() > 0) {
 693                                 cur.posLeft();
 694                                 cur.pushLeft(*cur.nextInset());
 695                         }
 696                 // FIXME: Change to
 697                 // } else if (!interpret(cur, cmd.argument()[0])) {
 698                 // when interpret accepts UCS4 characters
 699                 } else if (!interpret(cur, lyx::to_utf8(cmd.argument()))) {
 700                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 701                         cur.undispatched();
 702                 }
 703                 break;
 704
 705         //case LFUN_SERVER_GET_XY:
 706         //      sprintf(dispatch_buffer, "%d %d",);
 707         //      break;
 708
 709         case LFUN_SERVER_SET_XY: {
 710                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 711                 int x = 0;
 712                 int y = 0;
 713                 istringstream is(lyx::to_utf8(cmd.argument()));
 714                 is >> x >> y;
 715                 cur.setScreenPos(x, y);
 716                 break;
 717         }
 718
 719         // Special casing for superscript in case of LyX handling
 720         // dead-keys:
 721         case LFUN_ACCENT_CIRCUMFLEX:
 722                 if (cmd.argument().empty()) {
 723                         // do superscript if LyX handles
 724                         // deadkeys
 725                         recordUndo(cur, Undo::ATOMIC);
 726                         script(cur, true, grabAndEraseSelection(cur));
 727                 }
 728                 break;
 729
 730         case LFUN_ACCENT_UMLAUT:
 731         case LFUN_ACCENT_ACUTE:
 732         case LFUN_ACCENT_GRAVE:
 733         case LFUN_ACCENT_BREVE:
 734         case LFUN_ACCENT_DOT:
 735         case LFUN_ACCENT_MACRON:
 736         case LFUN_ACCENT_CARON:
 737         case LFUN_ACCENT_TILDE:
 738         case LFUN_ACCENT_CEDILLA:
 739         case LFUN_ACCENT_CIRCLE:
 740         case LFUN_ACCENT_UNDERDOT:
 741         case LFUN_ACCENT_TIE:
 742         case LFUN_ACCENT_OGONEK:
 743         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 744                 break;
 745
 746         //  Math fonts
 747         case LFUN_FONT_FREE_APPLY:
 748         case LFUN_FONT_FREE_UPDATE:
 749                 handleFont2(cur, lyx::to_utf8(cmd.argument()));
 750                 break;
 751
 752         case LFUN_FONT_BOLD:
 753                 if (currentMode() == TEXT_MODE)
 754                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textbf");
 755                 else
 756                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathbf");
 757                 break;
 758         case LFUN_FONT_SANS:
 759                 if (currentMode() == TEXT_MODE)
 760                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textsf");
 761                 else
 762                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathsf");
 763                 break;
 764         case LFUN_FONT_EMPH:
 765                 if (currentMode() == TEXT_MODE)
 766                         handleFont(cur, lyx::to_utf8(cmd.argument()), "emph");
 767                 else
 768                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathcal");
 769                 break;
 770         case LFUN_FONT_ROMAN:
 771                 if (currentMode() == TEXT_MODE)
 772                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textrm");
 773                 else
 774                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathrm");
 775                 break;
 776         case LFUN_FONT_CODE:
 777                 if (currentMode() == TEXT_MODE)
 778                         handleFont(cur, lyx::to_utf8(cmd.argument()), "texttt");
 779                 else
 780                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathtt");
 781                 break;
 782         case LFUN_FONT_FRAK:
 783                 handleFont(cur, lyx::to_utf8(cmd.argument()), "mathfrak");
 784                 break;
 785         case LFUN_FONT_ITAL:
 786                 if (currentMode() == TEXT_MODE)
 787                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textit");
 788                 else
 789                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathit");
 790                 break;
 791         case LFUN_FONT_NOUN:
 792                 if (currentMode() == TEXT_MODE)
 793                         // FIXME: should be "noun"
 794                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textsc");
 795                 else
 796                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathbb");
 797                 break;
 798         //case LFUN_FONT_FREE_APPLY:
 799                 handleFont(cur, lyx::to_utf8(cmd.argument()), "textrm");
 800                 break;
 801         case LFUN_FONT_DEFAULT:
 802                 handleFont(cur, lyx::to_utf8(cmd.argument()), "textnormal");
 803                 break;
 804
 805         case LFUN_MATH_MODE: {
 806 #if 1
 807                 // ignore math-mode on when already in math mode
 808                 if (currentMode() == InsetBase::MATH_MODE && cmd.argument() == "on")
 809                         break;
 810                 cur.macroModeClose();
 811                 string const save_selection = grabAndEraseSelection(cur);
 812                 selClearOrDel(cur);
 813                 //cur.plainInsert(MathAtom(new MathMBoxInset(cur.bv())));
 814                 cur.plainInsert(MathAtom(new MathBoxInset("mbox")));
 815                 cur.posLeft();
 816                 cur.pushLeft(*cur.nextInset());
 817                 cur.niceInsert(save_selection);
 818 #else
 819                 if (currentMode() == InsetBase::TEXT_MODE) {
 820                         cur.niceInsert(MathAtom(new MathHullInset("simple")));
 821                         cur.message(_("create new math text environment ($...$)"));
 822                 } else {
 823                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textrm");
 824                         cur.message(_("entered math text mode (textrm)"));
 825                 }
 826 #endif
 827                 break;
 828         }
 829
 830         case LFUN_MATH_SIZE:
 831 #if 0
 832                 recordUndo(cur);
 833                 cur.setSize(arg);
 834 #endif
 835                 break;
 836
 837         case LFUN_MATH_MATRIX: {
 838                 recordUndo(cur, Undo::ATOMIC);
 839                 unsigned int m = 1;
 840                 unsigned int n = 1;
 841                 string v_align;
 842                 string h_align;
 843                 istringstream is(lyx::to_utf8(cmd.argument()));
 844                 is >> m >> n >> v_align >> h_align;
 845                 if (m < 1)
 846                         m = 1;
 847                 if (n < 1)
 848                         n = 1;
 849                 v_align += 'c';
 850                 cur.niceInsert(
 851                         MathAtom(new MathArrayInset("array", m, n, v_align[0], h_align)));
 852                 break;
 853         }
 854
 855         case LFUN_MATH_DELIM: {
 856                 string ls;
 857                 string rs = lyx::support::split(lyx::to_utf8(cmd.argument()), ls, ' ');
 858                 // Reasonable default values
 859                 if (ls.empty())
 860                         ls = '(';
 861                 if (rs.empty())
 862                         rs = ')';
 863                 recordUndo(cur, Undo::ATOMIC);
 864                 cur.handleNest(MathAtom(new MathDelimInset(ls, rs)));
 865                 break;
 866         }
 867
 868         case LFUN_MATH_BIGDELIM: {
 869                 string const lname = cmd.getArg(0);
 870                 string const ldelim = cmd.getArg(1);
 871                 string const rname = cmd.getArg(2);
 872                 string const rdelim = cmd.getArg(3);
 873                 latexkeys const * l = in_word_set(lname);
 874                 bool const have_l = l && l->inset == "big" &&
 875                                     MathBigInset::isBigInsetDelim(ldelim);
 876                 l = in_word_set(rname);
 877                 bool const have_r = l && l->inset == "big" &&
 878                                     MathBigInset::isBigInsetDelim(rdelim);
 879                 // We mimic LFUN_MATH_DELIM in case we have an empty left
 880                 // or right delimiter.
 881                 if (have_l || have_r) {
 882                         recordUndo(cur, Undo::ATOMIC);
 883                         string const selection = grabAndEraseSelection(cur);
 884                         selClearOrDel(cur);
 885                         if (have_l)
 886                                 cur.insert(MathAtom(new MathBigInset(lname,
 887                                                                 ldelim)));
 888                         cur.niceInsert(selection);
 889                         if (have_r)
 890                                 cur.insert(MathAtom(new MathBigInset(rname,
 891                                                                 rdelim)));
 892                 }
 893                 // Don't call cur.undispatched() if we did nothing, this would
 894                 // lead to infinite recursion via LyXText::dispatch().
 895                 break;
 896         }
 897
 898         case LFUN_SPACE_INSERT:
 899         case LFUN_MATH_SPACE:
 900                 recordUndo(cur, Undo::ATOMIC);
 901                 cur.insert(MathAtom(new MathSpaceInset(",")));
 902                 break;
 903
 904         case LFUN_ERT_INSERT:
 905                 // interpret this as if a backslash was typed
 906                 recordUndo(cur, Undo::ATOMIC);
 907                 interpret(cur, '\\');
 908                 break;
 909
 910         case LFUN_MATH_SUBSCRIPT:
 911                 // interpret this as if a _ was typed
 912                 recordUndo(cur, Undo::ATOMIC);
 913                 interpret(cur, '_');
 914                 break;
 915
 916         case LFUN_MATH_SUPERSCRIPT:
 917                 // interpret this as if a ^ was typed
 918                 recordUndo(cur, Undo::ATOMIC);
 919                 interpret(cur, '^');
 920                 break;
 921
 922 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
 923 // handling such that "self-insert" works on "arbitrary stuff" too, and
 924 // math-insert only handles special math things like "matrix".
 925         case LFUN_MATH_INSERT: {
 926                 recordUndo(cur, Undo::ATOMIC);
 927                 if (cmd.argument() == "^" || cmd.argument() == "_")
 928                         interpret(cur, cmd.argument()[0]);
 929                 else
 930                         cur.niceInsert(lyx::to_utf8(cmd.argument()));
 931                 break;
 932                 }
 933
 934         case LFUN_DIALOG_SHOW_NEW_INSET: {
 935                 string const & name = lyx::to_utf8(cmd.argument());
 936                 string data;
 937                 if (name == "ref") {
 938                         RefInset tmp(name);
 939                         data = tmp.createDialogStr(name);
 940                 }
 941                 cur.bv().owner()->getDialogs().show(name, data, 0);
 942                 break;
 943         }
 944
 945         default:
 946                 MathDimInset::doDispatch(cur, cmd);
 947                 break;
 948         }
 949 }
 950
 951
 952 bool MathNestInset::getStatus(LCursor & cur, FuncRequest const & cmd,
 953                 FuncStatus & flag) const
 954 {
 955         // the font related toggles
 956         //string tc = "mathnormal";
 957         bool ret = true;
 958         string const arg = lyx::to_utf8(cmd.argument());
 959         switch (cmd.action) {
 960         case LFUN_TABULAR_FEATURE:
 961                 flag.enabled(false);
 962                 break;
 963 #if 0
 964         case LFUN_TABULAR_FEATURE:
 965                 // FIXME: check temporarily disabled
 966                 // valign code
 967                 char align = mathcursor::valign();
 968                 if (align == '\0') {
 969                         enable = false;
 970                         break;
 971                 }
 972                 if (cmd.argument().empty()) {
 973                         flag.clear();
 974                         break;
 975                 }
 976                 if (!contains("tcb", cmd.argument()[0])) {
 977                         enable = false;
 978                         break;
 979                 }
 980                 flag.setOnOff(cmd.argument()[0] == align);
 981                 break;
 982 #endif
 983         /// We have to handle them since 1.4 blocks all unhandled actions
 984         case LFUN_FONT_ITAL:
 985         case LFUN_FONT_BOLD:
 986         case LFUN_FONT_SANS:
 987         case LFUN_FONT_EMPH:
 988         case LFUN_FONT_CODE:
 989         case LFUN_FONT_NOUN:
 990         case LFUN_FONT_ROMAN:
 991         case LFUN_FONT_DEFAULT:
 992                 flag.enabled(true);
 993                 break;
 994         case LFUN_MATH_MUTATE:
 995                 //flag.setOnOff(mathcursor::formula()->hullType() == lyx::to_utf8(cmd.argument()));
 996                 flag.setOnOff(false);
 997                 break;
 998
 999         // we just need to be in math mode to enable that
1000         case LFUN_MATH_SIZE:
1001         case LFUN_MATH_SPACE:
1002         case LFUN_MATH_LIMITS:
1003         case LFUN_MATH_NONUMBER:
1004         case LFUN_MATH_NUMBER:
1005         case LFUN_MATH_EXTERN:
1006                 flag.enabled(true);
1007                 break;
1008
1009         case LFUN_FONT_FRAK:
1010                 flag.enabled(currentMode() != TEXT_MODE);
1011                 break;
1012
1013         case LFUN_MATH_INSERT: {
1014                 bool const textarg =
1015                         arg == "\\textbf"   || arg == "\\textsf" ||
1016                         arg == "\\textrm"   || arg == "\\textmd" ||
1017                         arg == "\\textit"   || arg == "\\textsc" ||
1018                         arg == "\\textsl"   || arg == "\\textup" ||
1019                         arg == "\\texttt"   || arg == "\\textbb" ||
1020                         arg == "\\textnormal";
1021                 flag.enabled(currentMode() != TEXT_MODE || textarg);
1022                 break;
1023         }
1024
1025         case LFUN_MATH_MATRIX:
1026                 flag.enabled(currentMode() == MATH_MODE);
1027                 break;
1028
1029         case LFUN_MATH_DELIM:
1030         case LFUN_MATH_BIGDELIM:
1031                 // Don't do this with multi-cell selections
1032                 flag.enabled(cur.selBegin().idx() == cur.selEnd().idx());
1033                 break;
1034
1035         default:
1036                 ret = false;
1037                 break;
1038         }
1039         return ret;
1040 }
1041
1042
1043 void MathNestInset::edit(LCursor & cur, bool left)
1044 {
1045         cur.push(*this);
1046         cur.idx() = left ? 0 : cur.lastidx();
1047         cur.pos() = left ? 0 : cur.lastpos();
1048         cur.resetAnchor();
1049         //lyxerr << "MathNestInset::edit, cur:\n" << cur << endl;
1050 }
1051
1052
1053 InsetBase * MathNestInset::editXY(LCursor & cur, int x, int y)
1054 {
1055         int idx_min = 0;
1056         int dist_min = 1000000;
1057         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1058                 int const d = cell(i).dist(x, y);
1059                 if (d < dist_min) {
1060                         dist_min = d;
1061                         idx_min = i;
1062                 }
1063         }
1064         MathArray & ar = cell(idx_min);
1065         cur.push(*this);
1066         cur.idx() = idx_min;
1067         cur.pos() = ar.x2pos(x - ar.xo());
1068         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1069         if (dist_min == 0) {
1070                 // hit inside cell
1071                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1072                         if (ar[i]->covers(x, y))
1073                                 return ar[i].nucleus()->editXY(cur, x, y);
1074         }
1075         return this;
1076 }
1077
1078
1079 void MathNestInset::lfunMousePress(LCursor & cur, FuncRequest & cmd)
1080 {
1081         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1082         BufferView & bv = cur.bv();
1083         if (cmd.button() == mouse_button::button1) {
1084                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1085                 bv.mouseSetCursor(cur);
1086         } else if (cmd.button() == mouse_button::button2) {
1087                 MathArray ar;
1088                 if (cur.selection())
1089                         asArray(lyx::to_utf8(bv.cursor().selectionAsString(false)), ar);
1090                 else
1091                         asArray(lyx::to_utf8(bv.owner()->gui().selection().get()), ar);
1092
1093                 cur.insert(ar);
1094                 bv.mouseSetCursor(cur);
1095         }
1096 }
1097
1098
1099 void MathNestInset::lfunMouseMotion(LCursor & cur, FuncRequest & cmd)
1100 {
1101         // only select with button 1
1102         if (cmd.button() == mouse_button::button1) {
1103                 LCursor & bvcur = cur.bv().cursor();
1104                 if (bvcur.anchor_.hasPart(cur)) {
1105                         //lyxerr << "## lfunMouseMotion: cursor: " << cur << endl;
1106                         bvcur.setCursor(cur);
1107                         bvcur.selection() = true;
1108                         //lyxerr << "MOTION " << bvcur << endl;
1109                 }
1110                 else {
1111                         cur.undispatched();
1112                 }
1113         }
1114 }
1115
1116
1117 void MathNestInset::lfunMouseRelease(LCursor & cur, FuncRequest & cmd)
1118 {
1119         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1120
1121         if (cmd.button() == mouse_button::button1) {
1122                 //cur.bv().owner()->gui().selection().put(cur.grabSelection());
1123                 return;
1124         }
1125
1126         if (cmd.button() == mouse_button::button3) {
1127                 // try to dispatch to enclosed insets first
1128                 cur.bv().owner()->getDialogs().show("mathpanel");
1129                 return;
1130         }
1131
1132         cur.undispatched();
1133 }
1134
1135
1136 bool MathNestInset::interpret(LCursor & cur, char c)
1137 {
1138         //lyxerr << "interpret 2: '" << c << "'" << endl;
1139         string save_selection;
1140         if (c == '^' || c == '_')
1141                 save_selection = grabAndEraseSelection(cur);
1142
1143         cur.clearTargetX();
1144
1145         // handle macroMode
1146         if (cur.inMacroMode()) {
1147                 string name = cur.macroName();
1148
1149                 /// are we currently typing '#1' or '#2' or...?
1150                 if (name == "\\#") {
1151                         cur.backspace();
1152                         int n = c - '0';
1153                         if (n >= 1 && n <= 9)
1154                                 cur.insert(new MathMacroArgument(n));
1155                         return true;
1156                 }
1157
1158                 if (isalpha(c)) {
1159                         cur.activeMacro()->setName(name + c);
1160                         return true;
1161                 }
1162
1163                 // handle 'special char' macros
1164                 if (name == "\\") {
1165                         // remove the '\\'
1166                         if (c == '\\') {
1167                                 cur.backspace();
1168                                 if (currentMode() == MathInset::TEXT_MODE)
1169                                         cur.niceInsert(createMathInset("textbackslash"));
1170                                 else
1171                                         cur.niceInsert(createMathInset("backslash"));
1172                         } else if (c == '{') {
1173                                 cur.backspace();
1174                                 cur.niceInsert(MathAtom(new MathBraceInset));
1175                         } else if (c == '%') {
1176                                 cur.backspace();
1177                                 cur.niceInsert(MathAtom(new MathCommentInset));
1178                         } else if (c == '#') {
1179                                 BOOST_ASSERT(cur.activeMacro());
1180                                 cur.activeMacro()->setName(name + c);
1181                         } else {
1182                                 cur.backspace();
1183                                 cur.niceInsert(createMathInset(string(1, c)));
1184                         }
1185                         return true;
1186                 }
1187
1188                 // One character big delimiters. The others are handled in
1189                 // the other interpret() method.
1190                 latexkeys const * l = in_word_set(name.substr(1));
1191                 if (name[0] == '\\' && l && l->inset == "big") {
1192                         string delim;
1193                         switch (c) {
1194                         case '{':
1195                                 delim = "\\{";
1196                                 break;
1197                         case '}':
1198                                 delim = "\\}";
1199                                 break;
1200                         default:
1201                                 delim = string(1, c);
1202                                 break;
1203                         }
1204                         if (MathBigInset::isBigInsetDelim(delim)) {
1205                                 // name + delim ared a valid MathBigInset.
1206                                 // We can't use cur.macroModeClose() because
1207                                 // it does not handle delim.
1208                                 MathUnknownInset * p = cur.activeMacro();
1209                                 p->finalize();
1210                                 --cur.pos();
1211                                 cur.cell().erase(cur.pos());
1212                                 cur.plainInsert(MathAtom(
1213                                         new MathBigInset(name.substr(1), delim)));
1214                                 return true;
1215                         }
1216                 }
1217
1218                 // leave macro mode and try again if necessary
1219                 cur.macroModeClose();
1220                 if (c == '{')
1221                         cur.niceInsert(MathAtom(new MathBraceInset));
1222                 else if (c != ' ')
1223                         interpret(cur, c);
1224                 return true;
1225         }
1226
1227         // This is annoying as one has to press <space> far too often.
1228         // Disable it.
1229
1230 #if 0
1231                 // leave autocorrect mode if necessary
1232                 if (autocorrect() && c == ' ') {
1233                         autocorrect() = false;
1234                         return true;
1235                 }
1236 #endif
1237
1238         // just clear selection on pressing the space bar
1239         if (cur.selection() && c == ' ') {
1240                 cur.selection() = false;
1241                 return true;
1242         }
1243
1244         selClearOrDel(cur);
1245
1246         if (c == '\\') {
1247                 //lyxerr << "starting with macro" << endl;
1248                 cur.insert(MathAtom(new MathUnknownInset("\\", false)));
1249                 return true;
1250         }
1251
1252         if (c == '\n') {
1253                 if (currentMode() == MathInset::TEXT_MODE)
1254                         cur.insert(c);
1255                 return true;
1256         }
1257
1258         if (c == ' ') {
1259                 if (currentMode() == MathInset::TEXT_MODE) {
1260                         // insert spaces in text mode,
1261                         // but suppress direct insertion of two spaces in a row
1262                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1263                         // it is better than nothing...
1264                         if (!cur.pos() != 0 || cur.prevAtom()->getChar() != ' ')
1265                                 cur.insert(c);
1266                         return true;
1267                 }
1268                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1269                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1270                         return true;
1271                 }
1272                 if (cur.popRight())
1273                         return true;
1274                 // if are at the very end, leave the formula
1275                 return cur.pos() != cur.lastpos();
1276         }
1277
1278         // These shouldn't work in text mode:
1279         if (currentMode() != MathInset::TEXT_MODE) {
1280                 if (c == '_') {
1281                         script(cur, false, save_selection);
1282                         return true;
1283                 }
1284                 if (c == '^') {
1285                         script(cur, true, save_selection);
1286                         return true;
1287                 }
1288                 if (c == '~') {
1289                         cur.niceInsert(createMathInset("sim"));
1290                         return true;
1291                 }
1292         }
1293
1294         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1295             c == '%' || c == '_' || c == '^') {
1296                 cur.niceInsert(createMathInset(string(1, c)));
1297                 return true;
1298         }
1299
1300
1301         // try auto-correction
1302         //if (autocorrect() && hasPrevAtom() && math_autocorrect(prevAtom(), c))
1303         //      return true;
1304
1305         // no special circumstances, so insert the character without any fuss
1306         cur.insert(c);
1307         cur.autocorrect() = true;
1308         return true;
1309 }
1310
1311
1312 bool MathNestInset::interpret(LCursor & cur, string const & str)
1313 {
1314         // Create a MathBigInset from cur.cell()[cur.pos() - 1] and t if
1315         // possible
1316         if (!cur.empty() && cur.pos() > 0 &&
1317             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1318                 if (MathBigInset::isBigInsetDelim(str)) {
1319                         string prev = asString(cur.cell()[cur.pos() - 1]);
1320                         if (prev[0] == '\\') {
1321                                 prev = prev.substr(1);
1322                                 latexkeys const * l = in_word_set(prev);
1323                                 if (l && l->inset == "big") {
1324                                         cur.cell()[cur.pos() - 1] =
1325                                                 MathAtom(new MathBigInset(prev, str));
1326                                         return true;
1327                                 }
1328                         }
1329                 }
1330         }
1331         return false;
1332 }
1333
1334
1335 bool MathNestInset::script(LCursor & cur, bool up, string const &
1336                 save_selection)
1337 {
1338         // Hack to get \^ and \_ working
1339         //lyxerr << "handling script: up: " << up << endl;
1340         if (cur.inMacroMode() && cur.macroName() == "\\") {
1341                 if (up)
1342                         cur.niceInsert(createMathInset("mathcircumflex"));
1343                 else
1344                         interpret(cur, '_');
1345                 return true;
1346         }
1347
1348         cur.macroModeClose();
1349         if (asScriptInset() && cur.idx() == 0) {
1350                 // we are in a nucleus of a script inset, move to _our_ script
1351                 MathScriptInset * inset = asScriptInset();
1352                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1353                 inset->ensure(up);
1354                 cur.idx() = inset->idxOfScript(up);
1355                 cur.pos() = 0;
1356         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1357                 --cur.pos();
1358                 MathScriptInset * inset = cur.nextAtom().nucleus()->asScriptInset();
1359                 cur.push(*inset);
1360                 inset->ensure(up);
1361                 cur.idx() = inset->idxOfScript(up);
1362                 cur.pos() = cur.lastpos();
1363         } else {
1364                 // convert the thing to our left to a scriptinset or create a new
1365                 // one if in the very first position of the array
1366                 if (cur.pos() == 0) {
1367                         //lyxerr << "new scriptinset" << endl;
1368                         cur.insert(new MathScriptInset(up));
1369                 } else {
1370                         //lyxerr << "converting prev atom " << endl;
1371                         cur.prevAtom() = MathAtom(new MathScriptInset(cur.prevAtom(), up));
1372                 }
1373                 --cur.pos();
1374                 MathScriptInset * inset = cur.nextAtom().nucleus()->asScriptInset();
1375                 // special handling of {}-bases
1376                 // is this always correct?
1377                 if (inset->nuc().size() == 1
1378                     && inset->nuc().back()->asBraceInset())
1379                         inset->nuc() = inset->nuc().back()->asNestInset()->cell(0);
1380
1381                 cur.push(*inset);
1382                 cur.idx() = 1;
1383                 cur.pos() = 0;
1384         }
1385         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1386         cur.niceInsert(save_selection);
1387         cur.resetAnchor();
1388         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1389         return true;
1390 }