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/Painter.h"
  53 #include "frontends/Selection.h"
  54 #include "frontends/nullpainter.h"
  55
  56 #include "funcrequest.h"
  57 #include "lyxserver.h"
  58 #include "lyxsocket.h"
  59
  60 #include <sstream>
  61
  62 using lyx::docstring;
  63 using lyx::cap::copySelection;
  64 using lyx::cap::grabAndEraseSelection;
  65 using lyx::cap::cutSelection;
  66 using lyx::cap::replaceSelection;
  67 using lyx::cap::selClearOrDel;
  68
  69 using std::endl;
  70 using std::string;
  71 using std::istringstream;
  72
  73
  74 InsetMathNest::InsetMathNest(idx_type nargs)
  75         : cells_(nargs), lock_(false)
  76 {}
  77
  78
  79 InsetMath::idx_type InsetMathNest::nargs() const
  80 {
  81         return cells_.size();
  82 }
  83
  84
  85 MathArray & InsetMathNest::cell(idx_type i)
  86 {
  87         return cells_[i];
  88 }
  89
  90
  91 MathArray const & InsetMathNest::cell(idx_type i) const
  92 {
  93         return cells_[i];
  94 }
  95
  96
  97 void InsetMathNest::cursorPos(CursorSlice const & sl, bool /*boundary*/,
  98         int & x, int & y) const
  99 {
 100 // FIXME: This is a hack. Ideally, the coord cache should not store
 101 // absolute positions, but relative ones. This would mean to call
 102 // setXY() not in MathArray::draw(), but in the parent insets' draw()
 103 // with the correctly adjusted x,y values. But this means that we'd have
 104 // to touch all (math)inset's draw() methods. Right now, we'll store
 105 // absolute value, and make them here relative, only to make them
 106 // absolute again when actually drawing the cursor. What a mess.
 107         BOOST_ASSERT(ptr_cmp(&sl.inset(), this));
 108         MathArray const & ar = sl.cell();
 109         if (!theCoords.getArrays().has(&ar)) {
 110                 // this can (semi-)legally happen if we just created this cell
 111                 // and it never has been drawn before. So don't ASSERT.
 112                 //lyxerr << "no cached data for array " << &ar << endl;
 113                 x = 0;
 114                 y = 0;
 115                 return;
 116         }
 117         Point const pt = theCoords.getArrays().xy(&ar);
 118         if (!theCoords.getInsets().has(this)) {
 119                 // same as above
 120                 //lyxerr << "no cached data for inset " << this << endl;
 121                 x = 0;
 122                 y = 0;
 123                 return;
 124         }
 125         Point const pt2 = theCoords.getInsets().xy(this);
 126         //lyxerr << "retrieving position cache for MathArray "
 127         //      << pt.x_ << ' ' << pt.y_ << std::endl;
 128         x = pt.x_ - pt2.x_ + ar.pos2x(sl.pos());
 129         y = pt.y_ - pt2.y_;
 130 //      lyxerr << "pt.y_ : " << pt.y_ << " pt2_.y_ : " << pt2.y_
 131 //              << " asc: " << ascent() << "  des: " << descent()
 132 //              << " ar.asc: " << ar.ascent() << " ar.des: " << ar.descent() << endl;
 133         // move cursor visually into empty cells ("blue rectangles");
 134         if (ar.empty())
 135                 x += 2;
 136 }
 137
 138
 139 void InsetMathNest::metrics(MetricsInfo const & mi) const
 140 {
 141         MetricsInfo m = mi;
 142         for (idx_type i = 0, n = nargs(); i != n; ++i)
 143                 cell(i).metrics(m);
 144 }
 145
 146
 147 bool InsetMathNest::idxNext(LCursor & cur) const
 148 {
 149         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 150         if (cur.idx() == cur.lastidx())
 151                 return false;
 152         ++cur.idx();
 153         cur.pos() = 0;
 154         return true;
 155 }
 156
 157
 158 bool InsetMathNest::idxRight(LCursor & cur) const
 159 {
 160         return idxNext(cur);
 161 }
 162
 163
 164 bool InsetMathNest::idxPrev(LCursor & cur) const
 165 {
 166         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 167         if (cur.idx() == 0)
 168                 return false;
 169         --cur.idx();
 170         cur.pos() = cur.lastpos();
 171         return true;
 172 }
 173
 174
 175 bool InsetMathNest::idxLeft(LCursor & cur) const
 176 {
 177         return idxPrev(cur);
 178 }
 179
 180
 181 bool InsetMathNest::idxFirst(LCursor & cur) const
 182 {
 183         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 184         if (nargs() == 0)
 185                 return false;
 186         cur.idx() = 0;
 187         cur.pos() = 0;
 188         return true;
 189 }
 190
 191
 192 bool InsetMathNest::idxLast(LCursor & cur) const
 193 {
 194         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 195         if (nargs() == 0)
 196                 return false;
 197         cur.idx() = cur.lastidx();
 198         cur.pos() = cur.lastpos();
 199         return true;
 200 }
 201
 202
 203 void InsetMathNest::dump() const
 204 {
 205         WriteStream os(lyxerr);
 206         os << "---------------------------------------------\n";
 207         write(os);
 208         os << "\n";
 209         for (idx_type i = 0, n = nargs(); i != n; ++i)
 210                 os << cell(i) << "\n";
 211         os << "---------------------------------------------\n";
 212 }
 213
 214
 215 void InsetMathNest::draw(PainterInfo & pi, int x, int y) const
 216 {
 217 #if 0
 218         if (lock_)
 219                 pi.pain.fillRectangle(x, y - ascent(), width(), height(),
 220                                         LColor::mathlockbg);
 221 #endif
 222         setPosCache(pi, x, y);
 223 }
 224
 225
 226 void InsetMathNest::drawSelection(PainterInfo & pi, int x, int y) const
 227 {
 228         // this should use the x/y values given, not the cached values
 229         LCursor & cur = pi.base.bv->cursor();
 230         if (!cur.selection())
 231                 return;
 232         if (!ptr_cmp(&cur.inset(), this))
 233                 return;
 234
 235         // FIXME: hack to get position cache warm
 236         static lyx::frontend::NullPainter nop;
 237         PainterInfo pinop(pi);
 238         pinop.pain = nop;
 239         draw(pinop, x, y);
 240
 241         CursorSlice s1 = cur.selBegin();
 242         CursorSlice s2 = cur.selEnd();
 243         //lyxerr << "InsetMathNest::drawing selection: "
 244         //      << " s1: " << s1 << " s2: " << s2 << endl;
 245         if (s1.idx() == s2.idx()) {
 246                 MathArray const & c = cell(s1.idx());
 247                 int x1 = c.xo() + c.pos2x(s1.pos());
 248                 int y1 = c.yo() - c.ascent();
 249                 int x2 = c.xo() + c.pos2x(s2.pos());
 250                 int y2 = c.yo() + c.descent();
 251                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, LColor::selection);
 252         //lyxerr << "InsetMathNest::drawing selection 3: "
 253         //      << " x1: " << x1 << " x2: " << x2
 254         //      << " y1: " << y1 << " y2: " << y2 << endl;
 255         } else {
 256                 for (idx_type i = 0; i < nargs(); ++i) {
 257                         if (idxBetween(i, s1.idx(), s2.idx())) {
 258                                 MathArray const & c = cell(i);
 259                                 int x1 = c.xo();
 260                                 int y1 = c.yo() - c.ascent();
 261                                 int x2 = c.xo() + c.width();
 262                                 int y2 = c.yo() + c.descent();
 263                                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, LColor::selection);
 264                         }
 265                 }
 266         }
 267 }
 268
 269
 270 void InsetMathNest::validate(LaTeXFeatures & features) const
 271 {
 272         for (idx_type i = 0; i < nargs(); ++i)
 273                 cell(i).validate(features);
 274 }
 275
 276
 277 void InsetMathNest::replace(ReplaceData & rep)
 278 {
 279         for (idx_type i = 0; i < nargs(); ++i)
 280                 cell(i).replace(rep);
 281 }
 282
 283
 284 bool InsetMathNest::contains(MathArray const & ar) const
 285 {
 286         for (idx_type i = 0; i < nargs(); ++i)
 287                 if (cell(i).contains(ar))
 288                         return true;
 289         return false;
 290 }
 291
 292
 293 bool InsetMathNest::lock() const
 294 {
 295         return lock_;
 296 }
 297
 298
 299 void InsetMathNest::lock(bool l)
 300 {
 301         lock_ = l;
 302 }
 303
 304
 305 bool InsetMathNest::isActive() const
 306 {
 307         return nargs() > 0;
 308 }
 309
 310
 311 MathArray InsetMathNest::glue() const
 312 {
 313         MathArray ar;
 314         for (size_t i = 0; i < nargs(); ++i)
 315                 ar.append(cell(i));
 316         return ar;
 317 }
 318
 319
 320 void InsetMathNest::write(WriteStream & os) const
 321 {
 322         os << '\\' << name().c_str();
 323         for (size_t i = 0; i < nargs(); ++i)
 324                 os << '{' << cell(i) << '}';
 325         if (nargs() == 0)
 326                 os.pendingSpace(true);
 327         if (lock_ && !os.latex()) {
 328                 os << "\\lyxlock";
 329                 os.pendingSpace(true);
 330         }
 331 }
 332
 333
 334 void InsetMathNest::normalize(NormalStream & os) const
 335 {
 336         os << '[' << name().c_str();
 337         for (size_t i = 0; i < nargs(); ++i)
 338                 os << ' ' << cell(i);
 339         os << ']';
 340 }
 341
 342
 343 int InsetMathNest::latex(Buffer const &, std::ostream & os,
 344                         OutputParams const & runparams) const
 345 {
 346         WriteStream wi(os, runparams.moving_arg, true);
 347         write(wi);
 348         return wi.line();
 349 }
 350
 351
 352 bool InsetMathNest::notifyCursorLeaves(LCursor & /*cur*/)
 353 {
 354 #ifdef WITH_WARNINGS
 355 #warning look here
 356 #endif
 357 #if 0
 358         MathArray & ar = cur.cell();
 359         // remove base-only "scripts"
 360         for (pos_type i = 0; i + 1 < ar.size(); ++i) {
 361                 InsetMathScript * p = operator[](i).nucleus()->asScriptInset();
 362                 if (p && p->nargs() == 1) {
 363                         MathArray ar = p->nuc();
 364                         erase(i);
 365                         insert(i, ar);
 366                         cur.adjust(i, ar.size() - 1);
 367                 }
 368         }
 369
 370         // glue adjacent font insets of the same kind
 371         for (pos_type i = 0; i + 1 < size(); ++i) {
 372                 InsetMathFont * p = operator[](i).nucleus()->asFontInset();
 373                 InsetMathFont const * q = operator[](i + 1)->asFontInset();
 374                 if (p && q && p->name() == q->name()) {
 375                         p->cell(0).append(q->cell(0));
 376                         erase(i + 1);
 377                         cur.adjust(i, -1);
 378                 }
 379         }
 380 #endif
 381         return false;
 382 }
 383
 384
 385 void InsetMathNest::handleFont
 386         (LCursor & cur, string const & arg, string const & font)
 387 {
 388         // this whole function is a hack and won't work for incremental font
 389         // changes...
 390         recordUndo(cur, Undo::ATOMIC);
 391
 392         if (cur.inset().asInsetMath()->name() == font)
 393                 cur.handleFont(font);
 394         else {
 395                 cur.handleNest(createInsetMath(font));
 396                 cur.insert(arg);
 397         }
 398 }
 399
 400
 401 void InsetMathNest::handleFont2(LCursor & cur, string const & arg)
 402 {
 403         recordUndo(cur, Undo::ATOMIC);
 404         LyXFont font;
 405         bool b;
 406         bv_funcs::string2font(arg, font, b);
 407         if (font.color() != LColor::inherit) {
 408                 MathAtom at = MathAtom(new InsetMathColor(true, font.color()));
 409                 cur.handleNest(at, 0);
 410         }
 411 }
 412
 413
 414 void InsetMathNest::doDispatch(LCursor & cur, FuncRequest & cmd)
 415 {
 416         //lyxerr << "InsetMathNest: request: " << cmd << std::endl;
 417         //CursorSlice sl = cur.current();
 418
 419         switch (cmd.action) {
 420
 421         case LFUN_PASTE: {
 422                 recordUndo(cur);
 423                 cur.message(_("Paste"));
 424                 replaceSelection(cur);
 425                 size_t n = 0;
 426                 istringstream is(lyx::to_utf8(cmd.argument()));
 427                 is >> n;
 428                 docstring const selection = lyx::cap::getSelection(cur.buffer(), n);
 429                 // FIXME UNICODE
 430                 cur.niceInsert(lyx::to_utf8(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().showInsetDialog(name, data, 0);
 943                 break;
 944         }
 945
 946         case LFUN_INSET_INSERT: {
 947                 MathArray ar;
 948                 if (createInsetMath_fromDialogStr(lyx::to_utf8(cmd.argument()), ar)) {
 949                         recordUndo(cur);
 950                         cur.insert(ar);
 951                 } else
 952                         cur.undispatched();
 953                 break;
 954         }
 955
 956         default:
 957                 InsetMathDim::doDispatch(cur, cmd);
 958                 break;
 959         }
 960 }
 961
 962
 963 bool InsetMathNest::getStatus(LCursor & cur, FuncRequest const & cmd,
 964                 FuncStatus & flag) const
 965 {
 966         // the font related toggles
 967         //string tc = "mathnormal";
 968         bool ret = true;
 969         string const arg = lyx::to_utf8(cmd.argument());
 970         switch (cmd.action) {
 971         case LFUN_TABULAR_FEATURE:
 972                 flag.enabled(false);
 973                 break;
 974 #if 0
 975         case LFUN_TABULAR_FEATURE:
 976                 // FIXME: check temporarily disabled
 977                 // valign code
 978                 char align = mathcursor::valign();
 979                 if (align == '\0') {
 980                         enable = false;
 981                         break;
 982                 }
 983                 if (cmd.argument().empty()) {
 984                         flag.clear();
 985                         break;
 986                 }
 987                 if (!contains("tcb", cmd.argument()[0])) {
 988                         enable = false;
 989                         break;
 990                 }
 991                 flag.setOnOff(cmd.argument()[0] == align);
 992                 break;
 993 #endif
 994         /// We have to handle them since 1.4 blocks all unhandled actions
 995         case LFUN_FONT_ITAL:
 996         case LFUN_FONT_BOLD:
 997         case LFUN_FONT_SANS:
 998         case LFUN_FONT_EMPH:
 999         case LFUN_FONT_CODE:
1000         case LFUN_FONT_NOUN:
1001         case LFUN_FONT_ROMAN:
1002         case LFUN_FONT_DEFAULT:
1003                 flag.enabled(true);
1004                 break;
1005         case LFUN_MATH_MUTATE:
1006                 //flag.setOnOff(mathcursor::formula()->hullType() == lyx::to_utf8(cmd.argument()));
1007                 flag.setOnOff(false);
1008                 break;
1009
1010         // we just need to be in math mode to enable that
1011         case LFUN_MATH_SIZE:
1012         case LFUN_MATH_SPACE:
1013         case LFUN_MATH_LIMITS:
1014         case LFUN_MATH_NONUMBER:
1015         case LFUN_MATH_NUMBER:
1016         case LFUN_MATH_EXTERN:
1017                 flag.enabled(true);
1018                 break;
1019
1020         case LFUN_FONT_FRAK:
1021                 flag.enabled(currentMode() != TEXT_MODE);
1022                 break;
1023
1024         case LFUN_MATH_INSERT: {
1025                 bool const textarg =
1026                         arg == "\\textbf"   || arg == "\\textsf" ||
1027                         arg == "\\textrm"   || arg == "\\textmd" ||
1028                         arg == "\\textit"   || arg == "\\textsc" ||
1029                         arg == "\\textsl"   || arg == "\\textup" ||
1030                         arg == "\\texttt"   || arg == "\\textbb" ||
1031                         arg == "\\textnormal";
1032                 flag.enabled(currentMode() != TEXT_MODE || textarg);
1033                 break;
1034         }
1035
1036         case LFUN_MATH_MATRIX:
1037                 flag.enabled(currentMode() == MATH_MODE);
1038                 break;
1039
1040         case LFUN_INSET_INSERT: {
1041                 // Don't test createMathInset_fromDialogStr(), since
1042                 // getStatus is not called with a valid reference and the
1043                 // dialog would not be applyable.
1044                 string const name = cmd.getArg(0);
1045                 flag.enabled(name == "ref");
1046                 break;
1047         }
1048
1049         case LFUN_MATH_DELIM:
1050         case LFUN_MATH_BIGDELIM:
1051                 // Don't do this with multi-cell selections
1052                 flag.enabled(cur.selBegin().idx() == cur.selEnd().idx());
1053                 break;
1054
1055         default:
1056                 ret = false;
1057                 break;
1058         }
1059         return ret;
1060 }
1061
1062
1063 void InsetMathNest::edit(LCursor & cur, bool left)
1064 {
1065         cur.push(*this);
1066         cur.idx() = left ? 0 : cur.lastidx();
1067         cur.pos() = left ? 0 : cur.lastpos();
1068         cur.resetAnchor();
1069         //lyxerr << "InsetMathNest::edit, cur:\n" << cur << endl;
1070 }
1071
1072
1073 InsetBase * InsetMathNest::editXY(LCursor & cur, int x, int y)
1074 {
1075         int idx_min = 0;
1076         int dist_min = 1000000;
1077         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1078                 int const d = cell(i).dist(x, y);
1079                 if (d < dist_min) {
1080                         dist_min = d;
1081                         idx_min = i;
1082                 }
1083         }
1084         MathArray & ar = cell(idx_min);
1085         cur.push(*this);
1086         cur.idx() = idx_min;
1087         cur.pos() = ar.x2pos(x - ar.xo());
1088         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1089         if (dist_min == 0) {
1090                 // hit inside cell
1091                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1092                         if (ar[i]->covers(x, y))
1093                                 return ar[i].nucleus()->editXY(cur, x, y);
1094         }
1095         return this;
1096 }
1097
1098
1099 void InsetMathNest::lfunMousePress(LCursor & cur, FuncRequest & cmd)
1100 {
1101         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1102         BufferView & bv = cur.bv();
1103         if (cmd.button() == mouse_button::button1) {
1104                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1105                 bv.mouseSetCursor(cur);
1106         } else if (cmd.button() == mouse_button::button2) {
1107                 MathArray ar;
1108                 if (cur.selection())
1109                         asArray(lyx::to_utf8(bv.cursor().selectionAsString(false)), ar);
1110                 else
1111                         asArray(lyx::to_utf8(theSelection().get()), ar);
1112
1113                 cur.insert(ar);
1114                 bv.mouseSetCursor(cur);
1115         }
1116 }
1117
1118
1119 void InsetMathNest::lfunMouseMotion(LCursor & cur, FuncRequest & cmd)
1120 {
1121         // only select with button 1
1122         if (cmd.button() == mouse_button::button1) {
1123                 LCursor & bvcur = cur.bv().cursor();
1124                 if (bvcur.anchor_.hasPart(cur)) {
1125                         //lyxerr << "## lfunMouseMotion: cursor: " << cur << endl;
1126                         bvcur.setCursor(cur);
1127                         bvcur.selection() = true;
1128                         //lyxerr << "MOTION " << bvcur << endl;
1129                 }
1130                 else {
1131                         cur.undispatched();
1132                 }
1133         }
1134 }
1135
1136
1137 void InsetMathNest::lfunMouseRelease(LCursor & cur, FuncRequest & cmd)
1138 {
1139         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1140
1141         if (cmd.button() == mouse_button::button1) {
1142                 //theSelection().put(cur.grabSelection());
1143                 return;
1144         }
1145
1146         if (cmd.button() == mouse_button::button3) {
1147                 // try to dispatch to enclosed insets first
1148                 cur.bv().showDialog("mathpanel");
1149                 return;
1150         }
1151
1152         cur.undispatched();
1153 }
1154
1155
1156 bool InsetMathNest::interpret(LCursor & cur, char c)
1157 {
1158         //lyxerr << "interpret 2: '" << c << "'" << endl;
1159         string save_selection;
1160         if (c == '^' || c == '_')
1161                 save_selection = grabAndEraseSelection(cur);
1162
1163         cur.clearTargetX();
1164
1165         // handle macroMode
1166         if (cur.inMacroMode()) {
1167                 string name = cur.macroName();
1168
1169                 /// are we currently typing '#1' or '#2' or...?
1170                 if (name == "\\#") {
1171                         cur.backspace();
1172                         int n = c - '0';
1173                         if (n >= 1 && n <= 9)
1174                                 cur.insert(new MathMacroArgument(n));
1175                         return true;
1176                 }
1177
1178                 if (isalpha(c)) {
1179                         cur.activeMacro()->setName(name + c);
1180                         return true;
1181                 }
1182
1183                 // handle 'special char' macros
1184                 if (name == "\\") {
1185                         // remove the '\\'
1186                         if (c == '\\') {
1187                                 cur.backspace();
1188                                 if (currentMode() == InsetMath::TEXT_MODE)
1189                                         cur.niceInsert(createInsetMath("textbackslash"));
1190                                 else
1191                                         cur.niceInsert(createInsetMath("backslash"));
1192                         } else if (c == '{') {
1193                                 cur.backspace();
1194                                 cur.niceInsert(MathAtom(new InsetMathBrace));
1195                         } else if (c == '%') {
1196                                 cur.backspace();
1197                                 cur.niceInsert(MathAtom(new InsetMathComment));
1198                         } else if (c == '#') {
1199                                 BOOST_ASSERT(cur.activeMacro());
1200                                 cur.activeMacro()->setName(name + c);
1201                         } else {
1202                                 cur.backspace();
1203                                 cur.niceInsert(createInsetMath(string(1, c)));
1204                         }
1205                         return true;
1206                 }
1207
1208                 // One character big delimiters. The others are handled in
1209                 // the other interpret() method.
1210                 latexkeys const * l = in_word_set(name.substr(1));
1211                 if (name[0] == '\\' && l && l->inset == "big") {
1212                         string delim;
1213                         switch (c) {
1214                         case '{':
1215                                 delim = "\\{";
1216                                 break;
1217                         case '}':
1218                                 delim = "\\}";
1219                                 break;
1220                         default:
1221                                 delim = string(1, c);
1222                                 break;
1223                         }
1224                         if (InsetMathBig::isBigInsetDelim(delim)) {
1225                                 // name + delim ared a valid InsetMathBig.
1226                                 // We can't use cur.macroModeClose() because
1227                                 // it does not handle delim.
1228                                 InsetMathUnknown * p = cur.activeMacro();
1229                                 p->finalize();
1230                                 --cur.pos();
1231                                 cur.cell().erase(cur.pos());
1232                                 cur.plainInsert(MathAtom(
1233                                         new InsetMathBig(name.substr(1), delim)));
1234                                 return true;
1235                         }
1236                 }
1237
1238                 // leave macro mode and try again if necessary
1239                 cur.macroModeClose();
1240                 if (c == '{')
1241                         cur.niceInsert(MathAtom(new InsetMathBrace));
1242                 else if (c != ' ')
1243                         interpret(cur, c);
1244                 return true;
1245         }
1246
1247         // This is annoying as one has to press <space> far too often.
1248         // Disable it.
1249
1250 #if 0
1251                 // leave autocorrect mode if necessary
1252                 if (autocorrect() && c == ' ') {
1253                         autocorrect() = false;
1254                         return true;
1255                 }
1256 #endif
1257
1258         // just clear selection on pressing the space bar
1259         if (cur.selection() && c == ' ') {
1260                 cur.selection() = false;
1261                 return true;
1262         }
1263
1264         selClearOrDel(cur);
1265
1266         if (c == '\\') {
1267                 //lyxerr << "starting with macro" << endl;
1268                 cur.insert(MathAtom(new InsetMathUnknown("\\", false)));
1269                 return true;
1270         }
1271
1272         if (c == '\n') {
1273                 if (currentMode() == InsetMath::TEXT_MODE)
1274                         cur.insert(c);
1275                 return true;
1276         }
1277
1278         if (c == ' ') {
1279                 if (currentMode() == InsetMath::TEXT_MODE) {
1280                         // insert spaces in text mode,
1281                         // but suppress direct insertion of two spaces in a row
1282                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1283                         // it is better than nothing...
1284                         if (!cur.pos() != 0 || cur.prevAtom()->getChar() != ' ')
1285                                 cur.insert(c);
1286                         return true;
1287                 }
1288                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1289                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1290                         return true;
1291                 }
1292                 if (cur.popRight())
1293                         return true;
1294                 // if are at the very end, leave the formula
1295                 return cur.pos() != cur.lastpos();
1296         }
1297
1298         // These shouldn't work in text mode:
1299         if (currentMode() != InsetMath::TEXT_MODE) {
1300                 if (c == '_') {
1301                         script(cur, false, save_selection);
1302                         return true;
1303                 }
1304                 if (c == '^') {
1305                         script(cur, true, save_selection);
1306                         return true;
1307                 }
1308                 if (c == '~') {
1309                         cur.niceInsert(createInsetMath("sim"));
1310                         return true;
1311                 }
1312         }
1313
1314         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1315             c == '%' || c == '_' || c == '^') {
1316                 cur.niceInsert(createInsetMath(string(1, c)));
1317                 return true;
1318         }
1319
1320
1321         // try auto-correction
1322         //if (autocorrect() && hasPrevAtom() && math_autocorrect(prevAtom(), c))
1323         //      return true;
1324
1325         // no special circumstances, so insert the character without any fuss
1326         cur.insert(c);
1327         cur.autocorrect() = true;
1328         return true;
1329 }
1330
1331
1332 bool InsetMathNest::interpret(LCursor & cur, string const & str)
1333 {
1334         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1335         // possible
1336         if (!cur.empty() && cur.pos() > 0 &&
1337             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1338                 if (InsetMathBig::isBigInsetDelim(str)) {
1339                         string prev = asString(cur.cell()[cur.pos() - 1]);
1340                         if (prev[0] == '\\') {
1341                                 prev = prev.substr(1);
1342                                 latexkeys const * l = in_word_set(prev);
1343                                 if (l && l->inset == "big") {
1344                                         cur.cell()[cur.pos() - 1] =
1345                                                 MathAtom(new InsetMathBig(prev, str));
1346                                         return true;
1347                                 }
1348                         }
1349                 }
1350         }
1351         return false;
1352 }
1353
1354
1355 bool InsetMathNest::script(LCursor & cur, bool up, string const &
1356                 save_selection)
1357 {
1358         // Hack to get \^ and \_ working
1359         //lyxerr << "handling script: up: " << up << endl;
1360         if (cur.inMacroMode() && cur.macroName() == "\\") {
1361                 if (up)
1362                         cur.niceInsert(createInsetMath("mathcircumflex"));
1363                 else
1364                         interpret(cur, '_');
1365                 return true;
1366         }
1367
1368         cur.macroModeClose();
1369         if (asScriptInset() && cur.idx() == 0) {
1370                 // we are in a nucleus of a script inset, move to _our_ script
1371                 InsetMathScript * inset = asScriptInset();
1372                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1373                 inset->ensure(up);
1374                 cur.idx() = inset->idxOfScript(up);
1375                 cur.pos() = 0;
1376         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1377                 --cur.pos();
1378                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1379                 cur.push(*inset);
1380                 inset->ensure(up);
1381                 cur.idx() = inset->idxOfScript(up);
1382                 cur.pos() = cur.lastpos();
1383         } else {
1384                 // convert the thing to our left to a scriptinset or create a new
1385                 // one if in the very first position of the array
1386                 if (cur.pos() == 0) {
1387                         //lyxerr << "new scriptinset" << endl;
1388                         cur.insert(new InsetMathScript(up));
1389                 } else {
1390                         //lyxerr << "converting prev atom " << endl;
1391                         cur.prevAtom() = MathAtom(new InsetMathScript(cur.prevAtom(), up));
1392                 }
1393                 --cur.pos();
1394                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1395                 // special handling of {}-bases
1396                 // is this always correct?
1397                 if (inset->nuc().size() == 1
1398                     && inset->nuc().back()->asBraceInset())
1399                         inset->nuc() = inset->nuc().back()->asNestInset()->cell(0);
1400
1401                 cur.push(*inset);
1402                 cur.idx() = 1;
1403                 cur.pos() = 0;
1404         }
1405         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1406         cur.niceInsert(save_selection);
1407         cur.resetAnchor();
1408         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1409         return true;
1410 }