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 (!interpretString(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 {
 709                         std::string arg0 = lyx::to_utf8(docstring(1, cmd.argument()[0]));
 710                         if (!interpretChar(cur, arg0[0])) {
 711                                 cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 712                                 cur.undispatched();
 713                         }
 714                 }
 715                 break;
 716
 717         //case LFUN_SERVER_GET_XY:
 718         //      sprintf(dispatch_buffer, "%d %d",);
 719         //      break;
 720
 721         case LFUN_SERVER_SET_XY: {
 722                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 723                 int x = 0;
 724                 int y = 0;
 725                 istringstream is(lyx::to_utf8(cmd.argument()));
 726                 is >> x >> y;
 727                 cur.setScreenPos(x, y);
 728                 break;
 729         }
 730
 731         // Special casing for superscript in case of LyX handling
 732         // dead-keys:
 733         case LFUN_ACCENT_CIRCUMFLEX:
 734                 if (cmd.argument().empty()) {
 735                         // do superscript if LyX handles
 736                         // deadkeys
 737                         recordUndo(cur, Undo::ATOMIC);
 738                         script(cur, true, grabAndEraseSelection(cur));
 739                 }
 740                 break;
 741
 742         case LFUN_ACCENT_UMLAUT:
 743         case LFUN_ACCENT_ACUTE:
 744         case LFUN_ACCENT_GRAVE:
 745         case LFUN_ACCENT_BREVE:
 746         case LFUN_ACCENT_DOT:
 747         case LFUN_ACCENT_MACRON:
 748         case LFUN_ACCENT_CARON:
 749         case LFUN_ACCENT_TILDE:
 750         case LFUN_ACCENT_CEDILLA:
 751         case LFUN_ACCENT_CIRCLE:
 752         case LFUN_ACCENT_UNDERDOT:
 753         case LFUN_ACCENT_TIE:
 754         case LFUN_ACCENT_OGONEK:
 755         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 756                 break;
 757
 758         //  Math fonts
 759         case LFUN_FONT_FREE_APPLY:
 760         case LFUN_FONT_FREE_UPDATE:
 761                 handleFont2(cur, lyx::to_utf8(cmd.argument()));
 762                 break;
 763
 764         case LFUN_FONT_BOLD:
 765                 if (currentMode() == TEXT_MODE)
 766                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textbf");
 767                 else
 768                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathbf");
 769                 break;
 770         case LFUN_FONT_SANS:
 771                 if (currentMode() == TEXT_MODE)
 772                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textsf");
 773                 else
 774                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathsf");
 775                 break;
 776         case LFUN_FONT_EMPH:
 777                 if (currentMode() == TEXT_MODE)
 778                         handleFont(cur, lyx::to_utf8(cmd.argument()), "emph");
 779                 else
 780                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathcal");
 781                 break;
 782         case LFUN_FONT_ROMAN:
 783                 if (currentMode() == TEXT_MODE)
 784                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textrm");
 785                 else
 786                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathrm");
 787                 break;
 788         case LFUN_FONT_CODE:
 789                 if (currentMode() == TEXT_MODE)
 790                         handleFont(cur, lyx::to_utf8(cmd.argument()), "texttt");
 791                 else
 792                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathtt");
 793                 break;
 794         case LFUN_FONT_FRAK:
 795                 handleFont(cur, lyx::to_utf8(cmd.argument()), "mathfrak");
 796                 break;
 797         case LFUN_FONT_ITAL:
 798                 if (currentMode() == TEXT_MODE)
 799                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textit");
 800                 else
 801                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathit");
 802                 break;
 803         case LFUN_FONT_NOUN:
 804                 if (currentMode() == TEXT_MODE)
 805                         // FIXME: should be "noun"
 806                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textsc");
 807                 else
 808                         handleFont(cur, lyx::to_utf8(cmd.argument()), "mathbb");
 809                 break;
 810         //case LFUN_FONT_FREE_APPLY:
 811                 handleFont(cur, lyx::to_utf8(cmd.argument()), "textrm");
 812                 break;
 813         case LFUN_FONT_DEFAULT:
 814                 handleFont(cur, lyx::to_utf8(cmd.argument()), "textnormal");
 815                 break;
 816
 817         case LFUN_MATH_MODE: {
 818 #if 1
 819                 // ignore math-mode on when already in math mode
 820                 if (currentMode() == InsetBase::MATH_MODE && cmd.argument() == "on")
 821                         break;
 822                 cur.macroModeClose();
 823                 string const save_selection = grabAndEraseSelection(cur);
 824                 selClearOrDel(cur);
 825                 //cur.plainInsert(MathAtom(new InsetMathMBox(cur.bv())));
 826                 cur.plainInsert(MathAtom(new InsetMathBox("mbox")));
 827                 cur.posLeft();
 828                 cur.pushLeft(*cur.nextInset());
 829                 cur.niceInsert(save_selection);
 830 #else
 831                 if (currentMode() == InsetBase::TEXT_MODE) {
 832                         cur.niceInsert(MathAtom(new InsetMathHull("simple")));
 833                         cur.message(_("create new math text environment ($...$)"));
 834                 } else {
 835                         handleFont(cur, lyx::to_utf8(cmd.argument()), "textrm");
 836                         cur.message(_("entered math text mode (textrm)"));
 837                 }
 838 #endif
 839                 break;
 840         }
 841
 842         case LFUN_MATH_SIZE:
 843 #if 0
 844                 recordUndo(cur);
 845                 cur.setSize(arg);
 846 #endif
 847                 break;
 848
 849         case LFUN_MATH_MATRIX: {
 850                 recordUndo(cur, Undo::ATOMIC);
 851                 unsigned int m = 1;
 852                 unsigned int n = 1;
 853                 string v_align;
 854                 string h_align;
 855                 istringstream is(lyx::to_utf8(cmd.argument()));
 856                 is >> m >> n >> v_align >> h_align;
 857                 if (m < 1)
 858                         m = 1;
 859                 if (n < 1)
 860                         n = 1;
 861                 v_align += 'c';
 862                 cur.niceInsert(
 863                         MathAtom(new InsetMathArray("array", m, n, v_align[0], h_align)));
 864                 break;
 865         }
 866
 867         case LFUN_MATH_DELIM: {
 868                 string ls;
 869                 string rs = lyx::support::split(lyx::to_utf8(cmd.argument()), ls, ' ');
 870                 // Reasonable default values
 871                 if (ls.empty())
 872                         ls = '(';
 873                 if (rs.empty())
 874                         rs = ')';
 875                 recordUndo(cur, Undo::ATOMIC);
 876                 cur.handleNest(MathAtom(new InsetMathDelim(ls, rs)));
 877                 break;
 878         }
 879
 880         case LFUN_MATH_BIGDELIM: {
 881                 string const lname = cmd.getArg(0);
 882                 string const ldelim = cmd.getArg(1);
 883                 string const rname = cmd.getArg(2);
 884                 string const rdelim = cmd.getArg(3);
 885                 latexkeys const * l = in_word_set(lname);
 886                 bool const have_l = l && l->inset == "big" &&
 887                                     InsetMathBig::isBigInsetDelim(ldelim);
 888                 l = in_word_set(rname);
 889                 bool const have_r = l && l->inset == "big" &&
 890                                     InsetMathBig::isBigInsetDelim(rdelim);
 891                 // We mimic LFUN_MATH_DELIM in case we have an empty left
 892                 // or right delimiter.
 893                 if (have_l || have_r) {
 894                         recordUndo(cur, Undo::ATOMIC);
 895                         string const selection = grabAndEraseSelection(cur);
 896                         selClearOrDel(cur);
 897                         if (have_l)
 898                                 cur.insert(MathAtom(new InsetMathBig(lname,
 899                                                                 ldelim)));
 900                         cur.niceInsert(selection);
 901                         if (have_r)
 902                                 cur.insert(MathAtom(new InsetMathBig(rname,
 903                                                                 rdelim)));
 904                 }
 905                 // Don't call cur.undispatched() if we did nothing, this would
 906                 // lead to infinite recursion via LyXText::dispatch().
 907                 break;
 908         }
 909
 910         case LFUN_SPACE_INSERT:
 911         case LFUN_MATH_SPACE:
 912                 recordUndo(cur, Undo::ATOMIC);
 913                 cur.insert(MathAtom(new InsetMathSpace(",")));
 914                 break;
 915
 916         case LFUN_ERT_INSERT:
 917                 // interpret this as if a backslash was typed
 918                 recordUndo(cur, Undo::ATOMIC);
 919                 interpretChar(cur, '\\');
 920                 break;
 921
 922         case LFUN_MATH_SUBSCRIPT:
 923                 // interpret this as if a _ was typed
 924                 recordUndo(cur, Undo::ATOMIC);
 925                 interpretChar(cur, '_');
 926                 break;
 927
 928         case LFUN_MATH_SUPERSCRIPT:
 929                 // interpret this as if a ^ was typed
 930                 recordUndo(cur, Undo::ATOMIC);
 931                 interpretChar(cur, '^');
 932                 break;
 933
 934 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
 935 // handling such that "self-insert" works on "arbitrary stuff" too, and
 936 // math-insert only handles special math things like "matrix".
 937         case LFUN_MATH_INSERT: {
 938                 recordUndo(cur, Undo::ATOMIC);
 939                 if (cmd.argument() == "^" || cmd.argument() == "_") {
 940                         std::string arg0 = lyx::to_utf8(docstring(1, cmd.argument()[0]));
 941                         interpretChar(cur, arg0[0]);
 942                 } else
 943                         cur.niceInsert(lyx::to_utf8(cmd.argument()));
 944                 break;
 945                 }
 946
 947         case LFUN_DIALOG_SHOW_NEW_INSET: {
 948                 string const & name = lyx::to_utf8(cmd.argument());
 949                 string data;
 950                 if (name == "ref") {
 951                         RefInset tmp(name);
 952                         data = tmp.createDialogStr(name);
 953                 }
 954                 cur.bv().showInsetDialog(name, data, 0);
 955                 break;
 956         }
 957
 958         case LFUN_INSET_INSERT: {
 959                 MathArray ar;
 960                 if (createInsetMath_fromDialogStr(lyx::to_utf8(cmd.argument()), ar)) {
 961                         recordUndo(cur);
 962                         cur.insert(ar);
 963                 } else
 964                         cur.undispatched();
 965                 break;
 966         }
 967
 968         default:
 969                 InsetMathDim::doDispatch(cur, cmd);
 970                 break;
 971         }
 972 }
 973
 974
 975 bool InsetMathNest::getStatus(LCursor & cur, FuncRequest const & cmd,
 976                 FuncStatus & flag) const
 977 {
 978         // the font related toggles
 979         //string tc = "mathnormal";
 980         bool ret = true;
 981         string const arg = lyx::to_utf8(cmd.argument());
 982         switch (cmd.action) {
 983         case LFUN_TABULAR_FEATURE:
 984                 flag.enabled(false);
 985                 break;
 986 #if 0
 987         case LFUN_TABULAR_FEATURE:
 988                 // FIXME: check temporarily disabled
 989                 // valign code
 990                 char align = mathcursor::valign();
 991                 if (align == '\0') {
 992                         enable = false;
 993                         break;
 994                 }
 995                 if (cmd.argument().empty()) {
 996                         flag.clear();
 997                         break;
 998                 }
 999                 if (!contains("tcb", cmd.argument()[0])) {
1000                         enable = false;
1001                         break;
1002                 }
1003                 flag.setOnOff(cmd.argument()[0] == align);
1004                 break;
1005 #endif
1006         /// We have to handle them since 1.4 blocks all unhandled actions
1007         case LFUN_FONT_ITAL:
1008         case LFUN_FONT_BOLD:
1009         case LFUN_FONT_SANS:
1010         case LFUN_FONT_EMPH:
1011         case LFUN_FONT_CODE:
1012         case LFUN_FONT_NOUN:
1013         case LFUN_FONT_ROMAN:
1014         case LFUN_FONT_DEFAULT:
1015                 flag.enabled(true);
1016                 break;
1017         case LFUN_MATH_MUTATE:
1018                 //flag.setOnOff(mathcursor::formula()->hullType() == lyx::to_utf8(cmd.argument()));
1019                 flag.setOnOff(false);
1020                 break;
1021
1022         // we just need to be in math mode to enable that
1023         case LFUN_MATH_SIZE:
1024         case LFUN_MATH_SPACE:
1025         case LFUN_MATH_LIMITS:
1026         case LFUN_MATH_NONUMBER:
1027         case LFUN_MATH_NUMBER:
1028         case LFUN_MATH_EXTERN:
1029                 flag.enabled(true);
1030                 break;
1031
1032         case LFUN_FONT_FRAK:
1033                 flag.enabled(currentMode() != TEXT_MODE);
1034                 break;
1035
1036         case LFUN_MATH_INSERT: {
1037                 bool const textarg =
1038                         arg == "\\textbf"   || arg == "\\textsf" ||
1039                         arg == "\\textrm"   || arg == "\\textmd" ||
1040                         arg == "\\textit"   || arg == "\\textsc" ||
1041                         arg == "\\textsl"   || arg == "\\textup" ||
1042                         arg == "\\texttt"   || arg == "\\textbb" ||
1043                         arg == "\\textnormal";
1044                 flag.enabled(currentMode() != TEXT_MODE || textarg);
1045                 break;
1046         }
1047
1048         case LFUN_MATH_MATRIX:
1049                 flag.enabled(currentMode() == MATH_MODE);
1050                 break;
1051
1052         case LFUN_INSET_INSERT: {
1053                 // Don't test createMathInset_fromDialogStr(), since
1054                 // getStatus is not called with a valid reference and the
1055                 // dialog would not be applyable.
1056                 string const name = cmd.getArg(0);
1057                 flag.enabled(name == "ref");
1058                 break;
1059         }
1060
1061         case LFUN_MATH_DELIM:
1062         case LFUN_MATH_BIGDELIM:
1063                 // Don't do this with multi-cell selections
1064                 flag.enabled(cur.selBegin().idx() == cur.selEnd().idx());
1065                 break;
1066
1067         default:
1068                 ret = false;
1069                 break;
1070         }
1071         return ret;
1072 }
1073
1074
1075 void InsetMathNest::edit(LCursor & cur, bool left)
1076 {
1077         cur.push(*this);
1078         cur.idx() = left ? 0 : cur.lastidx();
1079         cur.pos() = left ? 0 : cur.lastpos();
1080         cur.resetAnchor();
1081         //lyxerr << "InsetMathNest::edit, cur:\n" << cur << endl;
1082 }
1083
1084
1085 InsetBase * InsetMathNest::editXY(LCursor & cur, int x, int y)
1086 {
1087         int idx_min = 0;
1088         int dist_min = 1000000;
1089         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1090                 int const d = cell(i).dist(cur.bv(), x, y);
1091                 if (d < dist_min) {
1092                         dist_min = d;
1093                         idx_min = i;
1094                 }
1095         }
1096         MathArray & ar = cell(idx_min);
1097         cur.push(*this);
1098         cur.idx() = idx_min;
1099         cur.pos() = ar.x2pos(x - ar.xo(cur.bv()));
1100
1101         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1102         if (dist_min == 0) {
1103                 // hit inside cell
1104                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1105                         if (ar[i]->covers(cur.bv(), x, y))
1106                                 return ar[i].nucleus()->editXY(cur, x, y);
1107         }
1108         return this;
1109 }
1110
1111
1112 void InsetMathNest::lfunMousePress(LCursor & cur, FuncRequest & cmd)
1113 {
1114         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1115         BufferView & bv = cur.bv();
1116         if (cmd.button() == mouse_button::button1) {
1117                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1118                 bv.mouseSetCursor(cur);
1119         } else if (cmd.button() == mouse_button::button2) {
1120                 MathArray ar;
1121                 if (cur.selection())
1122                         asArray(bv.cursor().selectionAsString(false), ar);
1123                 else
1124                         asArray(theSelection().get(), ar);
1125
1126                 cur.insert(ar);
1127                 bv.mouseSetCursor(cur);
1128         }
1129 }
1130
1131
1132 void InsetMathNest::lfunMouseMotion(LCursor & cur, FuncRequest & cmd)
1133 {
1134         // only select with button 1
1135         if (cmd.button() == mouse_button::button1) {
1136                 LCursor & bvcur = cur.bv().cursor();
1137                 if (bvcur.anchor_.hasPart(cur)) {
1138                         //lyxerr << "## lfunMouseMotion: cursor: " << cur << endl;
1139                         bvcur.setCursor(cur);
1140                         bvcur.selection() = true;
1141                         //lyxerr << "MOTION " << bvcur << endl;
1142                 }
1143                 else {
1144                         cur.undispatched();
1145                 }
1146         }
1147 }
1148
1149
1150 void InsetMathNest::lfunMouseRelease(LCursor & cur, FuncRequest & cmd)
1151 {
1152         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1153
1154         if (cmd.button() == mouse_button::button1) {
1155                 //theSelection().put(cur.grabSelection());
1156                 return;
1157         }
1158
1159         if (cmd.button() == mouse_button::button3) {
1160                 // try to dispatch to enclosed insets first
1161                 cur.bv().showDialog("mathpanel");
1162                 return;
1163         }
1164
1165         cur.undispatched();
1166 }
1167
1168
1169 bool InsetMathNest::interpretChar(LCursor & cur, char c)
1170 {
1171         //lyxerr << "interpret 2: '" << c << "'" << endl;
1172         string save_selection;
1173         if (c == '^' || c == '_')
1174                 save_selection = grabAndEraseSelection(cur);
1175
1176         cur.clearTargetX();
1177
1178         // handle macroMode
1179         if (cur.inMacroMode()) {
1180                 string name = cur.macroName();
1181
1182                 /// are we currently typing '#1' or '#2' or...?
1183                 if (name == "\\#") {
1184                         cur.backspace();
1185                         int n = c - '0';
1186                         if (n >= 1 && n <= 9)
1187                                 cur.insert(new MathMacroArgument(n));
1188                         return true;
1189                 }
1190
1191                 if (isalpha(c)) {
1192                         cur.activeMacro()->setName(name + c);
1193                         return true;
1194                 }
1195
1196                 // handle 'special char' macros
1197                 if (name == "\\") {
1198                         // remove the '\\'
1199                         if (c == '\\') {
1200                                 cur.backspace();
1201                                 if (currentMode() == InsetMath::TEXT_MODE)
1202                                         cur.niceInsert(createInsetMath("textbackslash"));
1203                                 else
1204                                         cur.niceInsert(createInsetMath("backslash"));
1205                         } else if (c == '{') {
1206                                 cur.backspace();
1207                                 cur.niceInsert(MathAtom(new InsetMathBrace));
1208                         } else if (c == '%') {
1209                                 cur.backspace();
1210                                 cur.niceInsert(MathAtom(new InsetMathComment));
1211                         } else if (c == '#') {
1212                                 BOOST_ASSERT(cur.activeMacro());
1213                                 cur.activeMacro()->setName(name + c);
1214                         } else {
1215                                 cur.backspace();
1216                                 cur.niceInsert(createInsetMath(string(1, c)));
1217                         }
1218                         return true;
1219                 }
1220
1221                 // One character big delimiters. The others are handled in
1222                 // the other interpret() method.
1223                 latexkeys const * l = in_word_set(name.substr(1));
1224                 if (name[0] == '\\' && l && l->inset == "big") {
1225                         string delim;
1226                         switch (c) {
1227                         case '{':
1228                                 delim = "\\{";
1229                                 break;
1230                         case '}':
1231                                 delim = "\\}";
1232                                 break;
1233                         default:
1234                                 delim = string(1, c);
1235                                 break;
1236                         }
1237                         if (InsetMathBig::isBigInsetDelim(delim)) {
1238                                 // name + delim ared a valid InsetMathBig.
1239                                 // We can't use cur.macroModeClose() because
1240                                 // it does not handle delim.
1241                                 InsetMathUnknown * p = cur.activeMacro();
1242                                 p->finalize();
1243                                 --cur.pos();
1244                                 cur.cell().erase(cur.pos());
1245                                 cur.plainInsert(MathAtom(
1246                                         new InsetMathBig(name.substr(1), delim)));
1247                                 return true;
1248                         }
1249                 }
1250
1251                 // leave macro mode and try again if necessary
1252                 cur.macroModeClose();
1253                 if (c == '{')
1254                         cur.niceInsert(MathAtom(new InsetMathBrace));
1255                 else if (c != ' ')
1256                         interpretChar(cur, c);
1257                 return true;
1258         }
1259
1260         // This is annoying as one has to press <space> far too often.
1261         // Disable it.
1262
1263 #if 0
1264                 // leave autocorrect mode if necessary
1265                 if (autocorrect() && c == ' ') {
1266                         autocorrect() = false;
1267                         return true;
1268                 }
1269 #endif
1270
1271         // just clear selection on pressing the space bar
1272         if (cur.selection() && c == ' ') {
1273                 cur.selection() = false;
1274                 return true;
1275         }
1276
1277         selClearOrDel(cur);
1278
1279         if (c == '\\') {
1280                 //lyxerr << "starting with macro" << endl;
1281                 cur.insert(MathAtom(new InsetMathUnknown("\\", false)));
1282                 return true;
1283         }
1284
1285         if (c == '\n') {
1286                 if (currentMode() == InsetMath::TEXT_MODE)
1287                         cur.insert(c);
1288                 return true;
1289         }
1290
1291         if (c == ' ') {
1292                 if (currentMode() == InsetMath::TEXT_MODE) {
1293                         // insert spaces in text mode,
1294                         // but suppress direct insertion of two spaces in a row
1295                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1296                         // it is better than nothing...
1297                         if (!cur.pos() != 0 || cur.prevAtom()->getChar() != ' ')
1298                                 cur.insert(c);
1299                         return true;
1300                 }
1301                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1302                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1303                         return true;
1304                 }
1305                 if (cur.popRight())
1306                         return true;
1307                 // if are at the very end, leave the formula
1308                 return cur.pos() != cur.lastpos();
1309         }
1310
1311         // These shouldn't work in text mode:
1312         if (currentMode() != InsetMath::TEXT_MODE) {
1313                 if (c == '_') {
1314                         script(cur, false, save_selection);
1315                         return true;
1316                 }
1317                 if (c == '^') {
1318                         script(cur, true, save_selection);
1319                         return true;
1320                 }
1321                 if (c == '~') {
1322                         cur.niceInsert(createInsetMath("sim"));
1323                         return true;
1324                 }
1325         }
1326
1327         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1328             c == '%' || c == '_' || c == '^') {
1329                 cur.niceInsert(createInsetMath(string(1, c)));
1330                 return true;
1331         }
1332
1333
1334         // try auto-correction
1335         //if (autocorrect() && hasPrevAtom() && math_autocorrect(prevAtom(), c))
1336         //      return true;
1337
1338         // no special circumstances, so insert the character without any fuss
1339         cur.insert(c);
1340         cur.autocorrect() = true;
1341         return true;
1342 }
1343
1344
1345 bool InsetMathNest::interpretString(LCursor & cur, string const & str)
1346 {
1347         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1348         // possible
1349         if (!cur.empty() && cur.pos() > 0 &&
1350             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1351                 if (InsetMathBig::isBigInsetDelim(str)) {
1352                         string prev = asString(cur.cell()[cur.pos() - 1]);
1353                         if (prev[0] == '\\') {
1354                                 prev = prev.substr(1);
1355                                 latexkeys const * l = in_word_set(prev);
1356                                 if (l && l->inset == "big") {
1357                                         cur.cell()[cur.pos() - 1] =
1358                                                 MathAtom(new InsetMathBig(prev, str));
1359                                         return true;
1360                                 }
1361                         }
1362                 }
1363         }
1364         return false;
1365 }
1366
1367
1368 bool InsetMathNest::script(LCursor & cur, bool up, string const &
1369                 save_selection)
1370 {
1371         // Hack to get \^ and \_ working
1372         //lyxerr << "handling script: up: " << up << endl;
1373         if (cur.inMacroMode() && cur.macroName() == "\\") {
1374                 if (up)
1375                         cur.niceInsert(createInsetMath("mathcircumflex"));
1376                 else
1377                         interpretChar(cur, '_');
1378                 return true;
1379         }
1380
1381         cur.macroModeClose();
1382         if (asScriptInset() && cur.idx() == 0) {
1383                 // we are in a nucleus of a script inset, move to _our_ script
1384                 InsetMathScript * inset = asScriptInset();
1385                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1386                 inset->ensure(up);
1387                 cur.idx() = inset->idxOfScript(up);
1388                 cur.pos() = 0;
1389         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1390                 --cur.pos();
1391                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1392                 cur.push(*inset);
1393                 inset->ensure(up);
1394                 cur.idx() = inset->idxOfScript(up);
1395                 cur.pos() = cur.lastpos();
1396         } else {
1397                 // convert the thing to our left to a scriptinset or create a new
1398                 // one if in the very first position of the array
1399                 if (cur.pos() == 0) {
1400                         //lyxerr << "new scriptinset" << endl;
1401                         cur.insert(new InsetMathScript(up));
1402                 } else {
1403                         //lyxerr << "converting prev atom " << endl;
1404                         cur.prevAtom() = MathAtom(new InsetMathScript(cur.prevAtom(), up));
1405                 }
1406                 --cur.pos();
1407                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1408                 // special handling of {}-bases
1409                 // is this always correct?
1410                 if (inset->nuc().size() == 1
1411                     && inset->nuc().back()->asBraceInset())
1412                         inset->nuc() = inset->nuc().back()->asNestInset()->cell(0);
1413
1414                 cur.push(*inset);
1415                 cur.idx() = 1;
1416                 cur.pos() = 0;
1417         }
1418         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1419         cur.niceInsert(save_selection);
1420         cur.resetAnchor();
1421         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1422         return true;
1423 }