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 "lyxtext.h"
  48 #include "outputparams.h"
  49 #include "undo.h"
  50
  51 #include "support/lstrings.h"
  52
  53 #include "frontends/Painter.h"
  54 #include "frontends/Selection.h"
  55 #include "frontends/nullpainter.h"
  56
  57 #include "funcrequest.h"
  58 #include "lyxserver.h"
  59 #include "lyxsocket.h"
  60
  61 #include <sstream>
  62
  63 using lyx::CoordCache;
  64 using lyx::docstring;
  65 using lyx::Point;
  66
  67 using lyx::cap::copySelection;
  68 using lyx::cap::grabAndEraseSelection;
  69 using lyx::cap::cutSelection;
  70 using lyx::cap::replaceSelection;
  71 using lyx::cap::selClearOrDel;
  72
  73 using std::endl;
  74 using std::string;
  75 using std::istringstream;
  76
  77
  78 InsetMathNest::InsetMathNest(idx_type nargs)
  79         : cells_(nargs), lock_(false)
  80 {}
  81
  82
  83 InsetMath::idx_type InsetMathNest::nargs() const
  84 {
  85         return cells_.size();
  86 }
  87
  88
  89 MathArray & InsetMathNest::cell(idx_type i)
  90 {
  91         return cells_[i];
  92 }
  93
  94
  95 MathArray const & InsetMathNest::cell(idx_type i) const
  96 {
  97         return cells_[i];
  98 }
  99
 100
 101 void InsetMathNest::cursorPos(BufferView const & bv,
 102                 CursorSlice const & sl, bool /*boundary*/,
 103                 int & x, int & y) const
 104 {
 105 // FIXME: This is a hack. Ideally, the coord cache should not store
 106 // absolute positions, but relative ones. This would mean to call
 107 // setXY() not in MathArray::draw(), but in the parent insets' draw()
 108 // with the correctly adjusted x,y values. But this means that we'd have
 109 // to touch all (math)inset's draw() methods. Right now, we'll store
 110 // absolute value, and make them here relative, only to make them
 111 // absolute again when actually drawing the cursor. What a mess.
 112         BOOST_ASSERT(ptr_cmp(&sl.inset(), this));
 113         MathArray const & ar = sl.cell();
 114         CoordCache const & coord_cache = bv.coordCache();
 115         if (!coord_cache.getArrays().has(&ar)) {
 116                 // this can (semi-)legally happen if we just created this cell
 117                 // and it never has been drawn before. So don't ASSERT.
 118                 //lyxerr << "no cached data for array " << &ar << endl;
 119                 x = 0;
 120                 y = 0;
 121                 return;
 122         }
 123         Point const pt = coord_cache.getArrays().xy(&ar);
 124         if (!coord_cache.getInsets().has(this)) {
 125                 // same as above
 126                 //lyxerr << "no cached data for inset " << this << endl;
 127                 x = 0;
 128                 y = 0;
 129                 return;
 130         }
 131         Point const pt2 = coord_cache.getInsets().xy(this);
 132         //lyxerr << "retrieving position cache for MathArray "
 133         //      << pt.x_ << ' ' << pt.y_ << std::endl;
 134         x = pt.x_ - pt2.x_ + ar.pos2x(sl.pos());
 135         y = pt.y_ - pt2.y_;
 136 //      lyxerr << "pt.y_ : " << pt.y_ << " pt2_.y_ : " << pt2.y_
 137 //              << " asc: " << ascent() << "  des: " << descent()
 138 //              << " ar.asc: " << ar.ascent() << " ar.des: " << ar.descent() << endl;
 139         // move cursor visually into empty cells ("blue rectangles");
 140         if (ar.empty())
 141                 x += 2;
 142 }
 143
 144
 145 void InsetMathNest::metrics(MetricsInfo const & mi) const
 146 {
 147         MetricsInfo m = mi;
 148         for (idx_type i = 0, n = nargs(); i != n; ++i)
 149                 cell(i).metrics(m);
 150 }
 151
 152
 153 bool InsetMathNest::idxNext(LCursor & cur) const
 154 {
 155         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 156         if (cur.idx() == cur.lastidx())
 157                 return false;
 158         ++cur.idx();
 159         cur.pos() = 0;
 160         return true;
 161 }
 162
 163
 164 bool InsetMathNest::idxRight(LCursor & cur) const
 165 {
 166         return idxNext(cur);
 167 }
 168
 169
 170 bool InsetMathNest::idxPrev(LCursor & cur) const
 171 {
 172         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 173         if (cur.idx() == 0)
 174                 return false;
 175         --cur.idx();
 176         cur.pos() = cur.lastpos();
 177         return true;
 178 }
 179
 180
 181 bool InsetMathNest::idxLeft(LCursor & cur) const
 182 {
 183         return idxPrev(cur);
 184 }
 185
 186
 187 bool InsetMathNest::idxFirst(LCursor & cur) const
 188 {
 189         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 190         if (nargs() == 0)
 191                 return false;
 192         cur.idx() = 0;
 193         cur.pos() = 0;
 194         return true;
 195 }
 196
 197
 198 bool InsetMathNest::idxLast(LCursor & cur) const
 199 {
 200         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 201         if (nargs() == 0)
 202                 return false;
 203         cur.idx() = cur.lastidx();
 204         cur.pos() = cur.lastpos();
 205         return true;
 206 }
 207
 208
 209 void InsetMathNest::dump() const
 210 {
 211         WriteStream os(lyxerr);
 212         os << "---------------------------------------------\n";
 213         write(os);
 214         os << "\n";
 215         for (idx_type i = 0, n = nargs(); i != n; ++i)
 216                 os << cell(i) << "\n";
 217         os << "---------------------------------------------\n";
 218 }
 219
 220
 221 void InsetMathNest::draw(PainterInfo & pi, int x, int y) const
 222 {
 223 #if 0
 224         if (lock_)
 225                 pi.pain.fillRectangle(x, y - ascent(), width(), height(),
 226                                         LColor::mathlockbg);
 227 #endif
 228         setPosCache(pi, x, y);
 229 }
 230
 231
 232 void InsetMathNest::drawSelection(PainterInfo & pi, int x, int y) const
 233 {
 234         BufferView & bv = *pi.base.bv;
 235         // this should use the x/y values given, not the cached values
 236         LCursor & cur = bv.cursor();
 237         if (!cur.selection())
 238                 return;
 239         if (!ptr_cmp(&cur.inset(), this))
 240                 return;
 241
 242         // FIXME: hack to get position cache warm
 243         static lyx::frontend::NullPainter nop;
 244         PainterInfo pinop(pi);
 245         pinop.pain = nop;
 246         draw(pinop, x, y);
 247
 248         CursorSlice s1 = cur.selBegin();
 249         CursorSlice s2 = cur.selEnd();
 250
 251         //lyxerr << "InsetMathNest::drawing selection: "
 252         //      << " s1: " << s1 << " s2: " << s2 << endl;
 253         if (s1.idx() == s2.idx()) {
 254                 MathArray const & c = cell(s1.idx());
 255                 int x1 = c.xo(bv) + c.pos2x(s1.pos());
 256                 int y1 = c.yo(bv) - c.ascent();
 257                 int x2 = c.xo(bv) + c.pos2x(s2.pos());
 258                 int y2 = c.yo(bv) + c.descent();
 259                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, LColor::selection);
 260         //lyxerr << "InsetMathNest::drawing selection 3: "
 261         //      << " x1: " << x1 << " x2: " << x2
 262         //      << " y1: " << y1 << " y2: " << y2 << endl;
 263         } else {
 264                 for (idx_type i = 0; i < nargs(); ++i) {
 265                         if (idxBetween(i, s1.idx(), s2.idx())) {
 266                                 MathArray const & c = cell(i);
 267                                 int x1 = c.xo(bv);
 268                                 int y1 = c.yo(bv) - c.ascent();
 269                                 int x2 = c.xo(bv) + c.width();
 270                                 int y2 = c.yo(bv) + c.descent();
 271                                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, LColor::selection);
 272                         }
 273                 }
 274         }
 275 }
 276
 277
 278 void InsetMathNest::validate(LaTeXFeatures & features) const
 279 {
 280         for (idx_type i = 0; i < nargs(); ++i)
 281                 cell(i).validate(features);
 282 }
 283
 284
 285 void InsetMathNest::replace(ReplaceData & rep)
 286 {
 287         for (idx_type i = 0; i < nargs(); ++i)
 288                 cell(i).replace(rep);
 289 }
 290
 291
 292 bool InsetMathNest::contains(MathArray const & ar) const
 293 {
 294         for (idx_type i = 0; i < nargs(); ++i)
 295                 if (cell(i).contains(ar))
 296                         return true;
 297         return false;
 298 }
 299
 300
 301 bool InsetMathNest::lock() const
 302 {
 303         return lock_;
 304 }
 305
 306
 307 void InsetMathNest::lock(bool l)
 308 {
 309         lock_ = l;
 310 }
 311
 312
 313 bool InsetMathNest::isActive() const
 314 {
 315         return nargs() > 0;
 316 }
 317
 318
 319 MathArray InsetMathNest::glue() const
 320 {
 321         MathArray ar;
 322         for (size_t i = 0; i < nargs(); ++i)
 323                 ar.append(cell(i));
 324         return ar;
 325 }
 326
 327
 328 void InsetMathNest::write(WriteStream & os) const
 329 {
 330         os << '\\' << name().c_str();
 331         for (size_t i = 0; i < nargs(); ++i)
 332                 os << '{' << cell(i) << '}';
 333         if (nargs() == 0)
 334                 os.pendingSpace(true);
 335         if (lock_ && !os.latex()) {
 336                 os << "\\lyxlock";
 337                 os.pendingSpace(true);
 338         }
 339 }
 340
 341
 342 void InsetMathNest::normalize(NormalStream & os) const
 343 {
 344         os << '[' << name().c_str();
 345         for (size_t i = 0; i < nargs(); ++i)
 346                 os << ' ' << cell(i);
 347         os << ']';
 348 }
 349
 350
 351 int InsetMathNest::latex(Buffer const &, std::ostream & os,
 352                         OutputParams const & runparams) const
 353 {
 354         WriteStream wi(os, runparams.moving_arg, true);
 355         write(wi);
 356         return wi.line();
 357 }
 358
 359
 360 bool InsetMathNest::notifyCursorLeaves(LCursor & /*cur*/)
 361 {
 362 #ifdef WITH_WARNINGS
 363 #warning look here
 364 #endif
 365 #if 0
 366         MathArray & ar = cur.cell();
 367         // remove base-only "scripts"
 368         for (pos_type i = 0; i + 1 < ar.size(); ++i) {
 369                 InsetMathScript * p = operator[](i).nucleus()->asScriptInset();
 370                 if (p && p->nargs() == 1) {
 371                         MathArray ar = p->nuc();
 372                         erase(i);
 373                         insert(i, ar);
 374                         cur.adjust(i, ar.size() - 1);
 375                 }
 376         }
 377
 378         // glue adjacent font insets of the same kind
 379         for (pos_type i = 0; i + 1 < size(); ++i) {
 380                 InsetMathFont * p = operator[](i).nucleus()->asFontInset();
 381                 InsetMathFont const * q = operator[](i + 1)->asFontInset();
 382                 if (p && q && p->name() == q->name()) {
 383                         p->cell(0).append(q->cell(0));
 384                         erase(i + 1);
 385                         cur.adjust(i, -1);
 386                 }
 387         }
 388 #endif
 389         return false;
 390 }
 391
 392
 393 void InsetMathNest::handleFont
 394         (LCursor & cur, string const & arg, string const & font)
 395 {
 396         // this whole function is a hack and won't work for incremental font
 397         // changes...
 398         recordUndo(cur, Undo::ATOMIC);
 399
 400         if (cur.inset().asInsetMath()->name() == font)
 401                 cur.handleFont(font);
 402         else {
 403                 cur.handleNest(createInsetMath(font));
 404                 cur.insert(arg);
 405         }
 406 }
 407
 408
 409 void InsetMathNest::handleFont2(LCursor & cur, string const & arg)
 410 {
 411         recordUndo(cur, Undo::ATOMIC);
 412         LyXFont font;
 413         bool b;
 414         bv_funcs::string2font(arg, font, b);
 415         if (font.color() != LColor::inherit) {
 416                 MathAtom at = MathAtom(new InsetMathColor(true, font.color()));
 417                 cur.handleNest(at, 0);
 418         }
 419 }
 420
 421
 422 void InsetMathNest::doDispatch(LCursor & cur, FuncRequest & cmd)
 423 {
 424         //lyxerr << "InsetMathNest: request: " << cmd << std::endl;
 425         //CursorSlice sl = cur.current();
 426
 427         switch (cmd.action) {
 428
 429         case LFUN_PASTE: {
 430                 recordUndo(cur);
 431                 cur.message(_("Paste"));
 432                 replaceSelection(cur);
 433                 size_t n = 0;
 434                 istringstream is(lyx::to_utf8(cmd.argument()));
 435                 is >> n;
 436                 docstring const selection = lyx::cap::getSelection(cur.buffer(), n);
 437                 // FIXME UNICODE
 438                 cur.niceInsert(lyx::to_utf8(selection));
 439                 cur.clearSelection(); // bug 393
 440                 cur.bv().switchKeyMap();
 441                 finishUndo();
 442                 break;
 443         }
 444
 445         case LFUN_CUT:
 446                 recordUndo(cur);
 447                 cutSelection(cur, true, true);
 448                 cur.message(_("Cut"));
 449                 // Prevent stale position >= size crash
 450                 // Probably not necessary anymore, see eraseSelection (gb 2005-10-09)
 451                 cur.normalize();
 452                 break;
 453
 454         case LFUN_COPY:
 455                 copySelection(cur);
 456                 // FIXME UNICODE
 457                 cur.message(_("Copy"));
 458                 break;
 459
 460         case LFUN_MOUSE_PRESS:
 461                 lfunMousePress(cur, cmd);
 462                 break;
 463
 464         case LFUN_MOUSE_MOTION:
 465                 lfunMouseMotion(cur, cmd);
 466                 break;
 467
 468         case LFUN_MOUSE_RELEASE:
 469                 lfunMouseRelease(cur, cmd);
 470                 break;
 471
 472         case LFUN_FINISHED_LEFT:
 473                 cur.bv().cursor() = cur;
 474                 break;
 475
 476         case LFUN_FINISHED_RIGHT:
 477                 ++cur.pos();
 478                 cur.bv().cursor() = cur;
 479                 break;
 480
 481         case LFUN_FINISHED_UP:
 482                 cur.bv().cursor() = cur;
 483                 break;
 484
 485         case LFUN_FINISHED_DOWN:
 486                 ++cur.pos();
 487                 cur.bv().cursor() = cur;
 488                 break;
 489
 490         case LFUN_CHAR_FORWARD_SELECT:
 491         case LFUN_CHAR_FORWARD:
 492                 cur.selHandle(cmd.action == LFUN_CHAR_FORWARD_SELECT);
 493                 cur.autocorrect() = false;
 494                 cur.clearTargetX();
 495                 cur.macroModeClose();
 496                 if (cur.pos() != cur.lastpos() && cur.openable(cur.nextAtom())) {
 497                         cur.pushLeft(*cur.nextAtom().nucleus());
 498                         cur.inset().idxFirst(cur);
 499                 } else if (cur.posRight() || idxRight(cur)
 500                         || cur.popRight() || cur.selection())
 501                         ;
 502                 else {
 503                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 504                         cur.undispatched();
 505                 }
 506                 break;
 507
 508         case LFUN_CHAR_BACKWARD_SELECT:
 509         case LFUN_CHAR_BACKWARD:
 510                 cur.selHandle(cmd.action == LFUN_CHAR_BACKWARD_SELECT);
 511                 cur.autocorrect() = false;
 512                 cur.clearTargetX();
 513                 cur.macroModeClose();
 514                 if (cur.pos() != 0 && cur.openable(cur.prevAtom())) {
 515                         cur.posLeft();
 516                         cur.push(*cur.nextAtom().nucleus());
 517                         cur.inset().idxLast(cur);
 518                 } else if (cur.posLeft() || idxLeft(cur)
 519                         || cur.popLeft() || cur.selection())
 520                         ;
 521                 else {
 522                         cmd = FuncRequest(LFUN_FINISHED_LEFT);
 523                         cur.undispatched();
 524                 }
 525                 break;
 526
 527         case LFUN_UP_SELECT:
 528         case LFUN_UP:
 529                 // FIXME Tried to use clearTargetX and macroModeClose, crashed on cur.up()
 530                 if (cur.inMacroMode()) {
 531                         // Make Helge happy
 532                         cur.macroModeClose();
 533                         break;
 534                 }
 535                 cur.selHandle(cmd.action == LFUN_UP_SELECT);
 536                 if (!cur.up()) {
 537                         cmd = FuncRequest(LFUN_FINISHED_UP);
 538                         cur.undispatched();
 539                 }
 540                 // fixes bug 1598. Please check!
 541                 cur.normalize();
 542                 break;
 543
 544         case LFUN_DOWN_SELECT:
 545         case LFUN_DOWN:
 546                 if (cur.inMacroMode()) {
 547                         cur.macroModeClose();
 548                         break;
 549                 }
 550                 cur.selHandle(cmd.action == LFUN_DOWN_SELECT);
 551                 if (!cur.down()) {
 552                         cmd = FuncRequest(LFUN_FINISHED_DOWN);
 553                         cur.undispatched();
 554                 }
 555                 // fixes bug 1598. Please check!
 556                 cur.normalize();
 557                 break;
 558
 559         case LFUN_MOUSE_DOUBLE:
 560         case LFUN_MOUSE_TRIPLE:
 561         case LFUN_WORD_SELECT:
 562                 cur.pos() = 0;
 563                 cur.idx() = 0;
 564                 cur.resetAnchor();
 565                 cur.selection() = true;
 566                 cur.pos() = cur.lastpos();
 567                 cur.idx() = cur.lastidx();
 568                 break;
 569
 570         case LFUN_PARAGRAPH_UP_SELECT:
 571         case LFUN_PARAGRAPH_UP:
 572         case LFUN_PARAGRAPH_DOWN_SELECT:
 573         case LFUN_PARAGRAPH_DOWN:
 574                 break;
 575
 576         case LFUN_LINE_BEGIN_SELECT:
 577         case LFUN_LINE_BEGIN:
 578         case LFUN_WORD_BACKWARD_SELECT:
 579         case LFUN_WORD_BACKWARD:
 580                 cur.selHandle(cmd.action == LFUN_WORD_BACKWARD_SELECT ||
 581                                 cmd.action == LFUN_LINE_BEGIN_SELECT);
 582                 cur.macroModeClose();
 583                 if (cur.pos() != 0) {
 584                         cur.pos() = 0;
 585                 } else if (cur.col() != 0) {
 586                         cur.idx() -= cur.col();
 587                         cur.pos() = 0;
 588                 } else if (cur.idx() != 0) {
 589                         cur.idx() = 0;
 590                         cur.pos() = 0;
 591                 } else {
 592                         cmd = FuncRequest(LFUN_FINISHED_LEFT);
 593                         cur.undispatched();
 594                 }
 595                 break;
 596
 597         case LFUN_WORD_FORWARD_SELECT:
 598         case LFUN_WORD_FORWARD:
 599         case LFUN_LINE_END_SELECT:
 600         case LFUN_LINE_END:
 601                 cur.selHandle(cmd.action == LFUN_WORD_FORWARD_SELECT ||
 602                                 cmd.action == LFUN_LINE_END_SELECT);
 603                 cur.macroModeClose();
 604                 cur.clearTargetX();
 605                 if (cur.pos() != cur.lastpos()) {
 606                         cur.pos() = cur.lastpos();
 607                 } else if (ncols() && (cur.col() != cur.lastcol())) {
 608                         cur.idx() = cur.idx() - cur.col() + cur.lastcol();
 609                         cur.pos() = cur.lastpos();
 610                 } else if (cur.idx() != cur.lastidx()) {
 611                         cur.idx() = cur.lastidx();
 612                         cur.pos() = cur.lastpos();
 613                 } else {
 614                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 615                         cur.undispatched();
 616                 }
 617                 break;
 618
 619         case LFUN_SCREEN_UP_SELECT:
 620         case LFUN_SCREEN_UP:
 621                 cmd = FuncRequest(LFUN_FINISHED_LEFT);
 622                 cur.undispatched();
 623                 break;
 624
 625         case LFUN_SCREEN_DOWN_SELECT:
 626         case LFUN_SCREEN_DOWN:
 627                 cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 628                 cur.undispatched();
 629                 break;
 630
 631         case LFUN_CELL_FORWARD:
 632                 cur.inset().idxNext(cur);
 633                 break;
 634
 635         case LFUN_CELL_BACKWARD:
 636                 cur.inset().idxPrev(cur);
 637                 break;
 638
 639         case LFUN_WORD_DELETE_BACKWARD:
 640         case LFUN_CHAR_DELETE_BACKWARD:
 641                 if (cur.pos() == 0)
 642                         // May affect external cell:
 643                         recordUndoInset(cur, Undo::ATOMIC);
 644                 else
 645                         recordUndo(cur, Undo::ATOMIC);
 646                 cur.backspace();
 647                 break;
 648
 649         case LFUN_WORD_DELETE_FORWARD:
 650         case LFUN_CHAR_DELETE_FORWARD:
 651                 if (cur.pos() == cur.lastpos())
 652                         // May affect external cell:
 653                         recordUndoInset(cur, Undo::ATOMIC);
 654                 else
 655                         recordUndo(cur, Undo::ATOMIC);
 656                 cur.erase();
 657                 break;
 658
 659         case LFUN_ESCAPE:
 660                 if (cur.selection())
 661                         cur.clearSelection();
 662                 else  {
 663                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 664                         cur.undispatched();
 665                 }
 666                 break;
 667
 668         case LFUN_INSET_TOGGLE:
 669                 recordUndo(cur);
 670                 lock(!lock());
 671                 cur.popRight();
 672                 break;
 673
 674         case LFUN_SELF_INSERT:
 675                 if (cmd.argument().size() != 1) {
 676                         recordUndo(cur);
 677                         string const arg = lyx::to_utf8(cmd.argument());
 678                         if (!interpret(cur, arg))
 679                                 cur.insert(arg);
 680                         break;
 681                 }
 682                 // Don't record undo steps if we are in macro mode and
 683                 // cmd.argument is the next character of the macro name.
 684                 // Otherwise we'll get an invalid cursor if we undo after
 685                 // the macro was finished and the macro is a known command,
 686                 // e.g. sqrt. LCursor::macroModeClose replaces in this case
 687                 // the InsetMathUnknown with name "frac" by an empty
 688                 // InsetMathFrac -> a pos value > 0 is invalid.
 689                 // A side effect is that an undo before the macro is finished
 690                 // undoes the complete macro, not only the last character.
 691                 if (!cur.inMacroMode())
 692                         recordUndo(cur);
 693
 694                 // spacial handling of space. If we insert an inset
 695                 // via macro mode, we want to put the cursor inside it
 696                 // if relevant. Think typing "\frac<space>".
 697                 if (cmd.argument()[0] == ' '
 698                     && cur.inMacroMode() && cur.macroName() != "\\"
 699                     && cur.macroModeClose()) {
 700                         MathAtom const atom = cur.prevAtom();
 701                         if (atom->asNestInset() && atom->nargs() > 0) {
 702                                 cur.posLeft();
 703                                 cur.pushLeft(*cur.nextInset());
 704                         }
 705                 // FIXME: Change to
 706                 // } else if (!interpret(cur, cmd.argument()[0])) {
 707                 // when interpret accepts UCS4 characters
 708                 } else if (!interpret(cur, lyx::to_utf8(cmd.argument()))) {
 709                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 710                         cur.undispatched();
 711                 }
 712                 break;
 713
 714         //case LFUN_SERVER_GET_XY:
 715         //      sprintf(dispatch_buffer, "%d %d",);
 716         //      break;
 717
 718         case LFUN_SERVER_SET_XY: {
 719                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 720                 int x = 0;
 721                 int y = 0;
 722                 istringstream is(lyx::to_utf8(cmd.argument()));
 723                 is >> x >> y;
 724                 cur.setScreenPos(x, y);
 725                 break;
 726         }
 727
 728         // Special casing for superscript in case of LyX handling
 729         // dead-keys:
 730         case LFUN_ACCENT_CIRCUMFLEX:
 731                 if (cmd.argument().empty()) {
 732                         // do superscript if LyX handles
 733                         // deadkeys
 734                         recordUndo(cur, Undo::ATOMIC);
 735                         script(cur, true, grabAndEraseSelection(cur));
 736                 }
 737                 break;
 738
 739         case LFUN_ACCENT_UMLAUT:
 740         case LFUN_ACCENT_ACUTE:
 741         case LFUN_ACCENT_GRAVE:
 742         case LFUN_ACCENT_BREVE:
 743         case LFUN_ACCENT_DOT:
 744         case LFUN_ACCENT_MACRON:
 745         case LFUN_ACCENT_CARON:
 746         case LFUN_ACCENT_TILDE:
 747         case LFUN_ACCENT_CEDILLA:
 748         case LFUN_ACCENT_CIRCLE:
 749         case LFUN_ACCENT_UNDERDOT:
 750         case LFUN_ACCENT_TIE:
 751         case LFUN_ACCENT_OGONEK:
 752         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 753                 break;
 754
 755         //  Math fonts
 756         case LFUN_FONT_FREE_APPLY:
 757         case LFUN_FONT_FREE_UPDATE:
 758                 handleFont2(cur, lyx::to_utf8(cmd.argument()));
 759                 break;
 760
 761         case LFUN_FONT_BOLD:
 762                 if (currentMode() == TEXT_MODE)
 763                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textbf");
 764                 else
 765                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathbf");
 766                 break;
 767         case LFUN_FONT_SANS:
 768                 if (currentMode() == TEXT_MODE)
 769                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textsf");
 770                 else
 771                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathsf");
 772                 break;
 773         case LFUN_FONT_EMPH:
 774                 if (currentMode() == TEXT_MODE)
 775                         handleFont(cur, lyx::to_utf8(cmd.argument()), "emph");
 776                 else
 777                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathcal");
 778                 break;
 779         case LFUN_FONT_ROMAN:
 780                 if (currentMode() == TEXT_MODE)
 781                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textrm");
 782                 else
 783                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathrm");
 784                 break;
 785         case LFUN_FONT_CODE:
 786                 if (currentMode() == TEXT_MODE)
 787                         handleFont(cur, lyx::to_utf8(cmd.argument()), "texttt");
 788                 else
 789                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathtt");
 790                 break;
 791         case LFUN_FONT_FRAK:
 792                 handleFont(cur, lyx::to_utf8(cmd.argument()), "mathfrak");
 793                 break;
 794         case LFUN_FONT_ITAL:
 795                 if (currentMode() == TEXT_MODE)
 796                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textit");
 797                 else
 798                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathit");
 799                 break;
 800         case LFUN_FONT_NOUN:
 801                 if (currentMode() == TEXT_MODE)
 802                         // FIXME: should be "noun"
 803                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textsc");
 804                 else
 805                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathbb");
 806                 break;
 807         //case LFUN_FONT_FREE_APPLY:
 808                 handleFont(cur, lyx::to_utf8(cmd.argument()), "textrm");
 809                 break;
 810         case LFUN_FONT_DEFAULT:
 811                 handleFont(cur, lyx::to_utf8(cmd.argument()), "textnormal");
 812                 break;
 813
 814         case LFUN_MATH_MODE: {
 815 #if 1
 816                 // ignore math-mode on when already in math mode
 817                 if (currentMode() == InsetBase::MATH_MODE && cmd.argument() == "on")
 818                         break;
 819                 cur.macroModeClose();
 820                 string const save_selection = grabAndEraseSelection(cur);
 821                 selClearOrDel(cur);
 822                 //cur.plainInsert(MathAtom(new InsetMathMBox(cur.bv())));
 823                 cur.plainInsert(MathAtom(new InsetMathBox("mbox")));
 824                 cur.posLeft();
 825                 cur.pushLeft(*cur.nextInset());
 826                 cur.niceInsert(save_selection);
 827 #else
 828                 if (currentMode() == InsetBase::TEXT_MODE) {
 829                         cur.niceInsert(MathAtom(new InsetMathHull("simple")));
 830                         cur.message(_("create new math text environment ($...$)"));
 831                 } else {
 832                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textrm");
 833                         cur.message(_("entered math text mode (textrm)"));
 834                 }
 835 #endif
 836                 break;
 837         }
 838
 839         case LFUN_MATH_SIZE:
 840 #if 0
 841                 recordUndo(cur);
 842                 cur.setSize(arg);
 843 #endif
 844                 break;
 845
 846         case LFUN_MATH_MATRIX: {
 847                 recordUndo(cur, Undo::ATOMIC);
 848                 unsigned int m = 1;
 849                 unsigned int n = 1;
 850                 string v_align;
 851                 string h_align;
 852                 istringstream is(lyx::to_utf8(cmd.argument()));
 853                 is >> m >> n >> v_align >> h_align;
 854                 if (m < 1)
 855                         m = 1;
 856                 if (n < 1)
 857                         n = 1;
 858                 v_align += 'c';
 859                 cur.niceInsert(
 860                         MathAtom(new InsetMathArray("array", m, n, v_align[0], h_align)));
 861                 break;
 862         }
 863
 864         case LFUN_MATH_DELIM: {
 865                 string ls;
 866                 string rs = lyx::support::split(lyx::to_utf8(cmd.argument()), ls, ' ');
 867                 // Reasonable default values
 868                 if (ls.empty())
 869                         ls = '(';
 870                 if (rs.empty())
 871                         rs = ')';
 872                 recordUndo(cur, Undo::ATOMIC);
 873                 cur.handleNest(MathAtom(new InsetMathDelim(ls, rs)));
 874                 break;
 875         }
 876
 877         case LFUN_MATH_BIGDELIM: {
 878                 string const lname = cmd.getArg(0);
 879                 string const ldelim = cmd.getArg(1);
 880                 string const rname = cmd.getArg(2);
 881                 string const rdelim = cmd.getArg(3);
 882                 latexkeys const * l = in_word_set(lname);
 883                 bool const have_l = l && l->inset == "big" &&
 884                                     InsetMathBig::isBigInsetDelim(ldelim);
 885                 l = in_word_set(rname);
 886                 bool const have_r = l && l->inset == "big" &&
 887                                     InsetMathBig::isBigInsetDelim(rdelim);
 888                 // We mimic LFUN_MATH_DELIM in case we have an empty left
 889                 // or right delimiter.
 890                 if (have_l || have_r) {
 891                         recordUndo(cur, Undo::ATOMIC);
 892                         string const selection = grabAndEraseSelection(cur);
 893                         selClearOrDel(cur);
 894                         if (have_l)
 895                                 cur.insert(MathAtom(new InsetMathBig(lname,
 896                                                                 ldelim)));
 897                         cur.niceInsert(selection);
 898                         if (have_r)
 899                                 cur.insert(MathAtom(new InsetMathBig(rname,
 900                                                                 rdelim)));
 901                 }
 902                 // Don't call cur.undispatched() if we did nothing, this would
 903                 // lead to infinite recursion via LyXText::dispatch().
 904                 break;
 905         }
 906
 907         case LFUN_SPACE_INSERT:
 908         case LFUN_MATH_SPACE:
 909                 recordUndo(cur, Undo::ATOMIC);
 910                 cur.insert(MathAtom(new InsetMathSpace(",")));
 911                 break;
 912
 913         case LFUN_ERT_INSERT:
 914                 // interpret this as if a backslash was typed
 915                 recordUndo(cur, Undo::ATOMIC);
 916                 interpret(cur, '\\');
 917                 break;
 918
 919         case LFUN_MATH_SUBSCRIPT:
 920                 // interpret this as if a _ was typed
 921                 recordUndo(cur, Undo::ATOMIC);
 922                 interpret(cur, '_');
 923                 break;
 924
 925         case LFUN_MATH_SUPERSCRIPT:
 926                 // interpret this as if a ^ was typed
 927                 recordUndo(cur, Undo::ATOMIC);
 928                 interpret(cur, '^');
 929                 break;
 930
 931 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
 932 // handling such that "self-insert" works on "arbitrary stuff" too, and
 933 // math-insert only handles special math things like "matrix".
 934         case LFUN_MATH_INSERT: {
 935                 recordUndo(cur, Undo::ATOMIC);
 936                 if (cmd.argument() == "^" || cmd.argument() == "_")
 937                         interpret(cur, cmd.argument()[0]);
 938                 else
 939                         cur.niceInsert(lyx::to_utf8(cmd.argument()));
 940                 break;
 941                 }
 942
 943         case LFUN_DIALOG_SHOW_NEW_INSET: {
 944                 string const & name = lyx::to_utf8(cmd.argument());
 945                 string data;
 946                 if (name == "ref") {
 947                         RefInset tmp(name);
 948                         data = tmp.createDialogStr(name);
 949                 }
 950                 cur.bv().showInsetDialog(name, data, 0);
 951                 break;
 952         }
 953
 954         case LFUN_INSET_INSERT: {
 955                 MathArray ar;
 956                 if (createInsetMath_fromDialogStr(lyx::to_utf8(cmd.argument()), ar)) {
 957                         recordUndo(cur);
 958                         cur.insert(ar);
 959                 } else
 960                         cur.undispatched();
 961                 break;
 962         }
 963
 964         default:
 965                 InsetMathDim::doDispatch(cur, cmd);
 966                 break;
 967         }
 968 }
 969
 970
 971 bool InsetMathNest::getStatus(LCursor & cur, FuncRequest const & cmd,
 972                 FuncStatus & flag) const
 973 {
 974         // the font related toggles
 975         //string tc = "mathnormal";
 976         bool ret = true;
 977         string const arg = lyx::to_utf8(cmd.argument());
 978         switch (cmd.action) {
 979         case LFUN_TABULAR_FEATURE:
 980                 flag.enabled(false);
 981                 break;
 982 #if 0
 983         case LFUN_TABULAR_FEATURE:
 984                 // FIXME: check temporarily disabled
 985                 // valign code
 986                 char align = mathcursor::valign();
 987                 if (align == '\0') {
 988                         enable = false;
 989                         break;
 990                 }
 991                 if (cmd.argument().empty()) {
 992                         flag.clear();
 993                         break;
 994                 }
 995                 if (!contains("tcb", cmd.argument()[0])) {
 996                         enable = false;
 997                         break;
 998                 }
 999                 flag.setOnOff(cmd.argument()[0] == align);
1000                 break;
1001 #endif
1002         /// We have to handle them since 1.4 blocks all unhandled actions
1003         case LFUN_FONT_ITAL:
1004         case LFUN_FONT_BOLD:
1005         case LFUN_FONT_SANS:
1006         case LFUN_FONT_EMPH:
1007         case LFUN_FONT_CODE:
1008         case LFUN_FONT_NOUN:
1009         case LFUN_FONT_ROMAN:
1010         case LFUN_FONT_DEFAULT:
1011                 flag.enabled(true);
1012                 break;
1013         case LFUN_MATH_MUTATE:
1014                 //flag.setOnOff(mathcursor::formula()->hullType() == lyx::to_utf8(cmd.argument()));
1015                 flag.setOnOff(false);
1016                 break;
1017
1018         // we just need to be in math mode to enable that
1019         case LFUN_MATH_SIZE:
1020         case LFUN_MATH_SPACE:
1021         case LFUN_MATH_LIMITS:
1022         case LFUN_MATH_NONUMBER:
1023         case LFUN_MATH_NUMBER:
1024         case LFUN_MATH_EXTERN:
1025                 flag.enabled(true);
1026                 break;
1027
1028         case LFUN_FONT_FRAK:
1029                 flag.enabled(currentMode() != TEXT_MODE);
1030                 break;
1031
1032         case LFUN_MATH_INSERT: {
1033                 bool const textarg =
1034                         arg == "\\textbf"   || arg == "\\textsf" ||
1035                         arg == "\\textrm"   || arg == "\\textmd" ||
1036                         arg == "\\textit"   || arg == "\\textsc" ||
1037                         arg == "\\textsl"   || arg == "\\textup" ||
1038                         arg == "\\texttt"   || arg == "\\textbb" ||
1039                         arg == "\\textnormal";
1040                 flag.enabled(currentMode() != TEXT_MODE || textarg);
1041                 break;
1042         }
1043
1044         case LFUN_MATH_MATRIX:
1045                 flag.enabled(currentMode() == MATH_MODE);
1046                 break;
1047
1048         case LFUN_INSET_INSERT: {
1049                 // Don't test createMathInset_fromDialogStr(), since
1050                 // getStatus is not called with a valid reference and the
1051                 // dialog would not be applyable.
1052                 string const name = cmd.getArg(0);
1053                 flag.enabled(name == "ref");
1054                 break;
1055         }
1056
1057         case LFUN_MATH_DELIM:
1058         case LFUN_MATH_BIGDELIM:
1059                 // Don't do this with multi-cell selections
1060                 flag.enabled(cur.selBegin().idx() == cur.selEnd().idx());
1061                 break;
1062
1063         default:
1064                 ret = false;
1065                 break;
1066         }
1067         return ret;
1068 }
1069
1070
1071 void InsetMathNest::edit(LCursor & cur, bool left)
1072 {
1073         cur.push(*this);
1074         cur.idx() = left ? 0 : cur.lastidx();
1075         cur.pos() = left ? 0 : cur.lastpos();
1076         cur.resetAnchor();
1077         //lyxerr << "InsetMathNest::edit, cur:\n" << cur << endl;
1078 }
1079
1080
1081 InsetBase * InsetMathNest::editXY(LCursor & cur, int x, int y)
1082 {
1083         int idx_min = 0;
1084         int dist_min = 1000000;
1085         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1086                 int const d = cell(i).dist(cur.bv(), x, y);
1087                 if (d < dist_min) {
1088                         dist_min = d;
1089                         idx_min = i;
1090                 }
1091         }
1092         MathArray & ar = cell(idx_min);
1093         cur.push(*this);
1094         cur.idx() = idx_min;
1095         cur.pos() = ar.x2pos(x - ar.xo(cur.bv()));
1096
1097         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1098         if (dist_min == 0) {
1099                 // hit inside cell
1100                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1101                         if (ar[i]->covers(cur.bv(), x, y))
1102                                 return ar[i].nucleus()->editXY(cur, x, y);
1103         }
1104         return this;
1105 }
1106
1107
1108 void InsetMathNest::lfunMousePress(LCursor & cur, FuncRequest & cmd)
1109 {
1110         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1111         BufferView & bv = cur.bv();
1112         if (cmd.button() == mouse_button::button1) {
1113                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1114                 bv.mouseSetCursor(cur);
1115         } else if (cmd.button() == mouse_button::button2) {
1116                 MathArray ar;
1117                 if (cur.selection())
1118                         asArray(bv.cursor().selectionAsString(false), ar);
1119                 else
1120                         asArray(theSelection().get(), ar);
1121
1122                 cur.insert(ar);
1123                 bv.mouseSetCursor(cur);
1124         }
1125 }
1126
1127
1128 void InsetMathNest::lfunMouseMotion(LCursor & cur, FuncRequest & cmd)
1129 {
1130         // only select with button 1
1131         if (cmd.button() == mouse_button::button1) {
1132                 LCursor & bvcur = cur.bv().cursor();
1133                 if (bvcur.anchor_.hasPart(cur)) {
1134                         //lyxerr << "## lfunMouseMotion: cursor: " << cur << endl;
1135                         bvcur.setCursor(cur);
1136                         bvcur.selection() = true;
1137                         //lyxerr << "MOTION " << bvcur << endl;
1138                 }
1139                 else {
1140                         cur.undispatched();
1141                 }
1142         }
1143 }
1144
1145
1146 void InsetMathNest::lfunMouseRelease(LCursor & cur, FuncRequest & cmd)
1147 {
1148         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1149
1150         if (cmd.button() == mouse_button::button1) {
1151                 //theSelection().put(cur.grabSelection());
1152                 return;
1153         }
1154
1155         if (cmd.button() == mouse_button::button3) {
1156                 // try to dispatch to enclosed insets first
1157                 cur.bv().showDialog("mathpanel");
1158                 return;
1159         }
1160
1161         cur.undispatched();
1162 }
1163
1164
1165 bool InsetMathNest::interpret(LCursor & cur, char c)
1166 {
1167         //lyxerr << "interpret 2: '" << c << "'" << endl;
1168         string save_selection;
1169         if (c == '^' || c == '_')
1170                 save_selection = grabAndEraseSelection(cur);
1171
1172         cur.clearTargetX();
1173
1174         // handle macroMode
1175         if (cur.inMacroMode()) {
1176                 string name = cur.macroName();
1177
1178                 /// are we currently typing '#1' or '#2' or...?
1179                 if (name == "\\#") {
1180                         cur.backspace();
1181                         int n = c - '0';
1182                         if (n >= 1 && n <= 9)
1183                                 cur.insert(new MathMacroArgument(n));
1184                         return true;
1185                 }
1186
1187                 if (isalpha(c)) {
1188                         cur.activeMacro()->setName(name + c);
1189                         return true;
1190                 }
1191
1192                 // handle 'special char' macros
1193                 if (name == "\\") {
1194                         // remove the '\\'
1195                         if (c == '\\') {
1196                                 cur.backspace();
1197                                 if (currentMode() == InsetMath::TEXT_MODE)
1198                                         cur.niceInsert(createInsetMath("textbackslash"));
1199                                 else
1200                                         cur.niceInsert(createInsetMath("backslash"));
1201                         } else if (c == '{') {
1202                                 cur.backspace();
1203                                 cur.niceInsert(MathAtom(new InsetMathBrace));
1204                         } else if (c == '%') {
1205                                 cur.backspace();
1206                                 cur.niceInsert(MathAtom(new InsetMathComment));
1207                         } else if (c == '#') {
1208                                 BOOST_ASSERT(cur.activeMacro());
1209                                 cur.activeMacro()->setName(name + c);
1210                         } else {
1211                                 cur.backspace();
1212                                 cur.niceInsert(createInsetMath(string(1, c)));
1213                         }
1214                         return true;
1215                 }
1216
1217                 // One character big delimiters. The others are handled in
1218                 // the other interpret() method.
1219                 latexkeys const * l = in_word_set(name.substr(1));
1220                 if (name[0] == '\\' && l && l->inset == "big") {
1221                         string delim;
1222                         switch (c) {
1223                         case '{':
1224                                 delim = "\\{";
1225                                 break;
1226                         case '}':
1227                                 delim = "\\}";
1228                                 break;
1229                         default:
1230                                 delim = string(1, c);
1231                                 break;
1232                         }
1233                         if (InsetMathBig::isBigInsetDelim(delim)) {
1234                                 // name + delim ared a valid InsetMathBig.
1235                                 // We can't use cur.macroModeClose() because
1236                                 // it does not handle delim.
1237                                 InsetMathUnknown * p = cur.activeMacro();
1238                                 p->finalize();
1239                                 --cur.pos();
1240                                 cur.cell().erase(cur.pos());
1241                                 cur.plainInsert(MathAtom(
1242                                         new InsetMathBig(name.substr(1), delim)));
1243                                 return true;
1244                         }
1245                 }
1246
1247                 // leave macro mode and try again if necessary
1248                 cur.macroModeClose();
1249                 if (c == '{')
1250                         cur.niceInsert(MathAtom(new InsetMathBrace));
1251                 else if (c != ' ')
1252                         interpret(cur, c);
1253                 return true;
1254         }
1255
1256         // This is annoying as one has to press <space> far too often.
1257         // Disable it.
1258
1259 #if 0
1260                 // leave autocorrect mode if necessary
1261                 if (autocorrect() && c == ' ') {
1262                         autocorrect() = false;
1263                         return true;
1264                 }
1265 #endif
1266
1267         // just clear selection on pressing the space bar
1268         if (cur.selection() && c == ' ') {
1269                 cur.selection() = false;
1270                 return true;
1271         }
1272
1273         selClearOrDel(cur);
1274
1275         if (c == '\\') {
1276                 //lyxerr << "starting with macro" << endl;
1277                 cur.insert(MathAtom(new InsetMathUnknown("\\", false)));
1278                 return true;
1279         }
1280
1281         if (c == '\n') {
1282                 if (currentMode() == InsetMath::TEXT_MODE)
1283                         cur.insert(c);
1284                 return true;
1285         }
1286
1287         if (c == ' ') {
1288                 if (currentMode() == InsetMath::TEXT_MODE) {
1289                         // insert spaces in text mode,
1290                         // but suppress direct insertion of two spaces in a row
1291                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1292                         // it is better than nothing...
1293                         if (!cur.pos() != 0 || cur.prevAtom()->getChar() != ' ')
1294                                 cur.insert(c);
1295                         return true;
1296                 }
1297                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1298                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1299                         return true;
1300                 }
1301                 if (cur.popRight())
1302                         return true;
1303                 // if are at the very end, leave the formula
1304                 return cur.pos() != cur.lastpos();
1305         }
1306
1307         // These shouldn't work in text mode:
1308         if (currentMode() != InsetMath::TEXT_MODE) {
1309                 if (c == '_') {
1310                         script(cur, false, save_selection);
1311                         return true;
1312                 }
1313                 if (c == '^') {
1314                         script(cur, true, save_selection);
1315                         return true;
1316                 }
1317                 if (c == '~') {
1318                         cur.niceInsert(createInsetMath("sim"));
1319                         return true;
1320                 }
1321         }
1322
1323         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1324             c == '%' || c == '_' || c == '^') {
1325                 cur.niceInsert(createInsetMath(string(1, c)));
1326                 return true;
1327         }
1328
1329
1330         // try auto-correction
1331         //if (autocorrect() && hasPrevAtom() && math_autocorrect(prevAtom(), c))
1332         //      return true;
1333
1334         // no special circumstances, so insert the character without any fuss
1335         cur.insert(c);
1336         cur.autocorrect() = true;
1337         return true;
1338 }
1339
1340
1341 bool InsetMathNest::interpret(LCursor & cur, string const & str)
1342 {
1343         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1344         // possible
1345         if (!cur.empty() && cur.pos() > 0 &&
1346             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1347                 if (InsetMathBig::isBigInsetDelim(str)) {
1348                         string prev = asString(cur.cell()[cur.pos() - 1]);
1349                         if (prev[0] == '\\') {
1350                                 prev = prev.substr(1);
1351                                 latexkeys const * l = in_word_set(prev);
1352                                 if (l && l->inset == "big") {
1353                                         cur.cell()[cur.pos() - 1] =
1354                                                 MathAtom(new InsetMathBig(prev, str));
1355                                         return true;
1356                                 }
1357                         }
1358                 }
1359         }
1360         return false;
1361 }
1362
1363
1364 bool InsetMathNest::script(LCursor & cur, bool up, string const &
1365                 save_selection)
1366 {
1367         // Hack to get \^ and \_ working
1368         //lyxerr << "handling script: up: " << up << endl;
1369         if (cur.inMacroMode() && cur.macroName() == "\\") {
1370                 if (up)
1371                         cur.niceInsert(createInsetMath("mathcircumflex"));
1372                 else
1373                         interpret(cur, '_');
1374                 return true;
1375         }
1376
1377         cur.macroModeClose();
1378         if (asScriptInset() && cur.idx() == 0) {
1379                 // we are in a nucleus of a script inset, move to _our_ script
1380                 InsetMathScript * inset = asScriptInset();
1381                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1382                 inset->ensure(up);
1383                 cur.idx() = inset->idxOfScript(up);
1384                 cur.pos() = 0;
1385         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1386                 --cur.pos();
1387                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1388                 cur.push(*inset);
1389                 inset->ensure(up);
1390                 cur.idx() = inset->idxOfScript(up);
1391                 cur.pos() = cur.lastpos();
1392         } else {
1393                 // convert the thing to our left to a scriptinset or create a new
1394                 // one if in the very first position of the array
1395                 if (cur.pos() == 0) {
1396                         //lyxerr << "new scriptinset" << endl;
1397                         cur.insert(new InsetMathScript(up));
1398                 } else {
1399                         //lyxerr << "converting prev atom " << endl;
1400                         cur.prevAtom() = MathAtom(new InsetMathScript(cur.prevAtom(), up));
1401                 }
1402                 --cur.pos();
1403                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1404                 // special handling of {}-bases
1405                 // is this always correct?
1406                 if (inset->nuc().size() == 1
1407                     && inset->nuc().back()->asBraceInset())
1408                         inset->nuc() = inset->nuc().back()->asNestInset()->cell(0);
1409
1410                 cur.push(*inset);
1411                 cur.idx() = 1;
1412                 cur.pos() = 0;
1413         }
1414         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1415         cur.niceInsert(save_selection);
1416         cur.resetAnchor();
1417         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1418         return true;
1419 }