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 "MathStream.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
  64 namespace lyx {
  65
  66 using cap::copySelection;
  67 using cap::grabAndEraseSelection;
  68 using cap::cutSelection;
  69 using cap::replaceSelection;
  70 using cap::selClearOrDel;
  71
  72 using std::endl;
  73 using std::string;
  74 using std::istringstream;
  75
  76
  77 InsetMathNest::InsetMathNest(idx_type nargs)
  78         : cells_(nargs), lock_(false)
  79 {}
  80
  81
  82 InsetMath::idx_type InsetMathNest::nargs() const
  83 {
  84         return cells_.size();
  85 }
  86
  87
  88 MathArray & InsetMathNest::cell(idx_type i)
  89 {
  90         return cells_[i];
  91 }
  92
  93
  94 MathArray const & InsetMathNest::cell(idx_type i) const
  95 {
  96         return cells_[i];
  97 }
  98
  99
 100 void InsetMathNest::cursorPos(BufferView const & bv,
 101                 CursorSlice const & sl, bool /*boundary*/,
 102                 int & x, int & y) const
 103 {
 104 // FIXME: This is a hack. Ideally, the coord cache should not store
 105 // absolute positions, but relative ones. This would mean to call
 106 // setXY() not in MathArray::draw(), but in the parent insets' draw()
 107 // with the correctly adjusted x,y values. But this means that we'd have
 108 // to touch all (math)inset's draw() methods. Right now, we'll store
 109 // absolute value, and make them here relative, only to make them
 110 // absolute again when actually drawing the cursor. What a mess.
 111         BOOST_ASSERT(ptr_cmp(&sl.inset(), this));
 112         MathArray const & ar = sl.cell();
 113         CoordCache const & coord_cache = bv.coordCache();
 114         if (!coord_cache.getArrays().has(&ar)) {
 115                 // this can (semi-)legally happen if we just created this cell
 116                 // and it never has been drawn before. So don't ASSERT.
 117                 //lyxerr << "no cached data for array " << &ar << endl;
 118                 x = 0;
 119                 y = 0;
 120                 return;
 121         }
 122         Point const pt = coord_cache.getArrays().xy(&ar);
 123         if (!coord_cache.getInsets().has(this)) {
 124                 // same as above
 125                 //lyxerr << "no cached data for inset " << this << endl;
 126                 x = 0;
 127                 y = 0;
 128                 return;
 129         }
 130         Point const pt2 = coord_cache.getInsets().xy(this);
 131         //lyxerr << "retrieving position cache for MathArray "
 132         //      << pt.x_ << ' ' << pt.y_ << std::endl;
 133         x = pt.x_ - pt2.x_ + ar.pos2x(sl.pos());
 134         y = pt.y_ - pt2.y_;
 135 //      lyxerr << "pt.y_ : " << pt.y_ << " pt2_.y_ : " << pt2.y_
 136 //              << " asc: " << ascent() << "  des: " << descent()
 137 //              << " ar.asc: " << ar.ascent() << " ar.des: " << ar.descent() << endl;
 138         // move cursor visually into empty cells ("blue rectangles");
 139         if (ar.empty())
 140                 x += 2;
 141 }
 142
 143
 144 void InsetMathNest::metrics(MetricsInfo const & mi) const
 145 {
 146         MetricsInfo m = mi;
 147         for (idx_type i = 0, n = nargs(); i != n; ++i)
 148                 cell(i).metrics(m);
 149 }
 150
 151
 152 bool InsetMathNest::idxNext(LCursor & cur) const
 153 {
 154         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 155         if (cur.idx() == cur.lastidx())
 156                 return false;
 157         ++cur.idx();
 158         cur.pos() = 0;
 159         return true;
 160 }
 161
 162
 163 bool InsetMathNest::idxRight(LCursor & cur) const
 164 {
 165         return idxNext(cur);
 166 }
 167
 168
 169 bool InsetMathNest::idxPrev(LCursor & cur) const
 170 {
 171         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 172         if (cur.idx() == 0)
 173                 return false;
 174         --cur.idx();
 175         cur.pos() = cur.lastpos();
 176         return true;
 177 }
 178
 179
 180 bool InsetMathNest::idxLeft(LCursor & cur) const
 181 {
 182         return idxPrev(cur);
 183 }
 184
 185
 186 bool InsetMathNest::idxFirst(LCursor & cur) const
 187 {
 188         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 189         if (nargs() == 0)
 190                 return false;
 191         cur.idx() = 0;
 192         cur.pos() = 0;
 193         return true;
 194 }
 195
 196
 197 bool InsetMathNest::idxLast(LCursor & cur) const
 198 {
 199         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 200         if (nargs() == 0)
 201                 return false;
 202         cur.idx() = cur.lastidx();
 203         cur.pos() = cur.lastpos();
 204         return true;
 205 }
 206
 207
 208 void InsetMathNest::dump() const
 209 {
 210         odocstringstream oss;
 211         WriteStream os(oss);
 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         lyxerr << to_utf8(oss.str());
 219 }
 220
 221
 222 void InsetMathNest::draw(PainterInfo & pi, int x, int y) const
 223 {
 224 #if 0
 225         if (lock_)
 226                 pi.pain.fillRectangle(x, y - ascent(), width(), height(),
 227                                         LColor::mathlockbg);
 228 #endif
 229         setPosCache(pi, x, y);
 230 }
 231
 232
 233 void InsetMathNest::drawSelection(PainterInfo & pi, int x, int y) const
 234 {
 235         BufferView & bv = *pi.base.bv;
 236         // this should use the x/y values given, not the cached values
 237         LCursor & cur = bv.cursor();
 238         if (!cur.selection())
 239                 return;
 240         if (!ptr_cmp(&cur.inset(), this))
 241                 return;
 242
 243         // FIXME: hack to get position cache warm
 244         static frontend::NullPainter nop;
 245         PainterInfo pinop(pi);
 246         pinop.pain = nop;
 247         draw(pinop, x, y);
 248
 249         CursorSlice s1 = cur.selBegin();
 250         CursorSlice s2 = cur.selEnd();
 251
 252         //lyxerr << "InsetMathNest::drawing selection: "
 253         //      << " s1: " << s1 << " s2: " << s2 << endl;
 254         if (s1.idx() == s2.idx()) {
 255                 MathArray const & c = cell(s1.idx());
 256                 int x1 = c.xo(bv) + c.pos2x(s1.pos());
 257                 int y1 = c.yo(bv) - c.ascent();
 258                 int x2 = c.xo(bv) + c.pos2x(s2.pos());
 259                 int y2 = c.yo(bv) + c.descent();
 260                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, LColor::selection);
 261         //lyxerr << "InsetMathNest::drawing selection 3: "
 262         //      << " x1: " << x1 << " x2: " << x2
 263         //      << " y1: " << y1 << " y2: " << y2 << endl;
 264         } else {
 265                 for (idx_type i = 0; i < nargs(); ++i) {
 266                         if (idxBetween(i, s1.idx(), s2.idx())) {
 267                                 MathArray const & c = cell(i);
 268                                 int x1 = c.xo(bv);
 269                                 int y1 = c.yo(bv) - c.ascent();
 270                                 int x2 = c.xo(bv) + c.width();
 271                                 int y2 = c.yo(bv) + c.descent();
 272                                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, LColor::selection);
 273                         }
 274                 }
 275         }
 276 }
 277
 278
 279 void InsetMathNest::validate(LaTeXFeatures & features) const
 280 {
 281         for (idx_type i = 0; i < nargs(); ++i)
 282                 cell(i).validate(features);
 283 }
 284
 285
 286 void InsetMathNest::replace(ReplaceData & rep)
 287 {
 288         for (idx_type i = 0; i < nargs(); ++i)
 289                 cell(i).replace(rep);
 290 }
 291
 292
 293 bool InsetMathNest::contains(MathArray const & ar) const
 294 {
 295         for (idx_type i = 0; i < nargs(); ++i)
 296                 if (cell(i).contains(ar))
 297                         return true;
 298         return false;
 299 }
 300
 301
 302 bool InsetMathNest::lock() const
 303 {
 304         return lock_;
 305 }
 306
 307
 308 void InsetMathNest::lock(bool l)
 309 {
 310         lock_ = l;
 311 }
 312
 313
 314 bool InsetMathNest::isActive() const
 315 {
 316         return nargs() > 0;
 317 }
 318
 319
 320 MathArray InsetMathNest::glue() const
 321 {
 322         MathArray ar;
 323         for (size_t i = 0; i < nargs(); ++i)
 324                 ar.append(cell(i));
 325         return ar;
 326 }
 327
 328
 329 void InsetMathNest::write(WriteStream & os) const
 330 {
 331         os << '\\' << name().c_str();
 332         for (size_t i = 0; i < nargs(); ++i)
 333                 os << '{' << cell(i) << '}';
 334         if (nargs() == 0)
 335                 os.pendingSpace(true);
 336         if (lock_ && !os.latex()) {
 337                 os << "\\lyxlock";
 338                 os.pendingSpace(true);
 339         }
 340 }
 341
 342
 343 void InsetMathNest::normalize(NormalStream & os) const
 344 {
 345         os << '[' << name().c_str();
 346         for (size_t i = 0; i < nargs(); ++i)
 347                 os << ' ' << cell(i);
 348         os << ']';
 349 }
 350
 351
 352 int InsetMathNest::latex(Buffer const &, odocstream & os,
 353                         OutputParams const & runparams) const
 354 {
 355         WriteStream wi(os, runparams.moving_arg, true);
 356         write(wi);
 357         return wi.line();
 358 }
 359
 360
 361 bool InsetMathNest::notifyCursorLeaves(LCursor & /*cur*/)
 362 {
 363 #ifdef WITH_WARNINGS
 364 #warning look here
 365 #endif
 366 #if 0
 367         MathArray & ar = cur.cell();
 368         // remove base-only "scripts"
 369         for (pos_type i = 0; i + 1 < ar.size(); ++i) {
 370                 InsetMathScript * p = operator[](i).nucleus()->asScriptInset();
 371                 if (p && p->nargs() == 1) {
 372                         MathArray ar = p->nuc();
 373                         erase(i);
 374                         insert(i, ar);
 375                         cur.adjust(i, ar.size() - 1);
 376                 }
 377         }
 378
 379         // glue adjacent font insets of the same kind
 380         for (pos_type i = 0; i + 1 < size(); ++i) {
 381                 InsetMathFont * p = operator[](i).nucleus()->asFontInset();
 382                 InsetMathFont const * q = operator[](i + 1)->asFontInset();
 383                 if (p && q && p->name() == q->name()) {
 384                         p->cell(0).append(q->cell(0));
 385                         erase(i + 1);
 386                         cur.adjust(i, -1);
 387                 }
 388         }
 389 #endif
 390         return false;
 391 }
 392
 393
 394 void InsetMathNest::handleFont
 395         (LCursor & cur, docstring const & arg, char const * const font)
 396 {
 397         handleFont(cur, arg, from_ascii(font));
 398 }
 399
 400
 401 void InsetMathNest::handleFont
 402         (LCursor & cur, docstring const & arg, docstring const & font)
 403 {
 404         // this whole function is a hack and won't work for incremental font
 405         // changes...
 406         recordUndo(cur, Undo::ATOMIC);
 407
 408         if (cur.inset().asInsetMath()->name() == font)
 409                 cur.handleFont(to_utf8(font));
 410         else {
 411                 cur.handleNest(createInsetMath(font));
 412                 cur.insert(arg);
 413         }
 414 }
 415
 416
 417 void InsetMathNest::handleFont2(LCursor & cur, docstring const & arg)
 418 {
 419         recordUndo(cur, Undo::ATOMIC);
 420         LyXFont font;
 421         bool b;
 422         bv_funcs::string2font(to_utf8(arg), font, b);
 423         if (font.color() != LColor::inherit) {
 424                 MathAtom at = MathAtom(new InsetMathColor(true, font.color()));
 425                 cur.handleNest(at, 0);
 426         }
 427 }
 428
 429
 430 void InsetMathNest::doDispatch(LCursor & cur, FuncRequest & cmd)
 431 {
 432         //lyxerr << "InsetMathNest: request: " << cmd << std::endl;
 433         //CursorSlice sl = cur.current();
 434
 435         switch (cmd.action) {
 436
 437         case LFUN_PASTE: {
 438                 recordUndo(cur);
 439                 cur.message(_("Paste"));
 440                 replaceSelection(cur);
 441                 size_t n = 0;
 442                 istringstream is(to_utf8(cmd.argument()));
 443                 is >> n;
 444                 docstring const selection = cap::getSelection(cur.buffer(), n);
 445                 cur.niceInsert(selection);
 446                 cur.clearSelection(); // bug 393
 447                 cur.bv().switchKeyMap();
 448                 finishUndo();
 449                 break;
 450         }
 451
 452         case LFUN_CUT:
 453                 recordUndo(cur);
 454                 cutSelection(cur, true, true);
 455                 cur.message(_("Cut"));
 456                 // Prevent stale position >= size crash
 457                 // Probably not necessary anymore, see eraseSelection (gb 2005-10-09)
 458                 cur.normalize();
 459                 break;
 460
 461         case LFUN_COPY:
 462                 copySelection(cur);
 463                 // FIXME UNICODE
 464                 cur.message(_("Copy"));
 465                 break;
 466
 467         case LFUN_MOUSE_PRESS:
 468                 lfunMousePress(cur, cmd);
 469                 break;
 470
 471         case LFUN_MOUSE_MOTION:
 472                 lfunMouseMotion(cur, cmd);
 473                 break;
 474
 475         case LFUN_MOUSE_RELEASE:
 476                 lfunMouseRelease(cur, cmd);
 477                 break;
 478
 479         case LFUN_FINISHED_LEFT:
 480                 cur.bv().cursor() = cur;
 481                 break;
 482
 483         case LFUN_FINISHED_RIGHT:
 484                 ++cur.pos();
 485                 cur.bv().cursor() = cur;
 486                 break;
 487
 488         case LFUN_FINISHED_UP:
 489                 cur.bv().cursor() = cur;
 490                 break;
 491
 492         case LFUN_FINISHED_DOWN:
 493                 ++cur.pos();
 494                 cur.bv().cursor() = cur;
 495                 break;
 496
 497         case LFUN_CHAR_FORWARD_SELECT:
 498         case LFUN_CHAR_FORWARD:
 499                 cur.selHandle(cmd.action == LFUN_CHAR_FORWARD_SELECT);
 500                 cur.autocorrect() = false;
 501                 cur.clearTargetX();
 502                 cur.macroModeClose();
 503                 if (cur.pos() != cur.lastpos() && cur.openable(cur.nextAtom())) {
 504                         cur.pushLeft(*cur.nextAtom().nucleus());
 505                         cur.inset().idxFirst(cur);
 506                 } else if (cur.posRight() || idxRight(cur)
 507                         || cur.popRight() || cur.selection())
 508                         ;
 509                 else {
 510                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 511                         cur.undispatched();
 512                 }
 513                 break;
 514
 515         case LFUN_CHAR_BACKWARD_SELECT:
 516         case LFUN_CHAR_BACKWARD:
 517                 cur.selHandle(cmd.action == LFUN_CHAR_BACKWARD_SELECT);
 518                 cur.autocorrect() = false;
 519                 cur.clearTargetX();
 520                 cur.macroModeClose();
 521                 if (cur.pos() != 0 && cur.openable(cur.prevAtom())) {
 522                         cur.posLeft();
 523                         cur.push(*cur.nextAtom().nucleus());
 524                         cur.inset().idxLast(cur);
 525                 } else if (cur.posLeft() || idxLeft(cur)
 526                         || cur.popLeft() || cur.selection())
 527                         ;
 528                 else {
 529                         cmd = FuncRequest(LFUN_FINISHED_LEFT);
 530                         cur.undispatched();
 531                 }
 532                 break;
 533
 534         case LFUN_UP_SELECT:
 535         case LFUN_UP:
 536                 // FIXME Tried to use clearTargetX and macroModeClose, crashed on cur.up()
 537                 if (cur.inMacroMode()) {
 538                         // Make Helge happy
 539                         cur.macroModeClose();
 540                         break;
 541                 }
 542                 cur.selHandle(cmd.action == LFUN_UP_SELECT);
 543                 if (!cur.up()) {
 544                         cmd = FuncRequest(LFUN_FINISHED_UP);
 545                         cur.undispatched();
 546                 }
 547                 // fixes bug 1598. Please check!
 548                 cur.normalize();
 549                 break;
 550
 551         case LFUN_DOWN_SELECT:
 552         case LFUN_DOWN:
 553                 if (cur.inMacroMode()) {
 554                         cur.macroModeClose();
 555                         break;
 556                 }
 557                 cur.selHandle(cmd.action == LFUN_DOWN_SELECT);
 558                 if (!cur.down()) {
 559                         cmd = FuncRequest(LFUN_FINISHED_DOWN);
 560                         cur.undispatched();
 561                 }
 562                 // fixes bug 1598. Please check!
 563                 cur.normalize();
 564                 break;
 565
 566         case LFUN_MOUSE_DOUBLE:
 567         case LFUN_MOUSE_TRIPLE:
 568         case LFUN_WORD_SELECT:
 569                 cur.pos() = 0;
 570                 cur.idx() = 0;
 571                 cur.resetAnchor();
 572                 cur.selection() = true;
 573                 cur.pos() = cur.lastpos();
 574                 cur.idx() = cur.lastidx();
 575                 break;
 576
 577         case LFUN_PARAGRAPH_UP_SELECT:
 578         case LFUN_PARAGRAPH_UP:
 579         case LFUN_PARAGRAPH_DOWN_SELECT:
 580         case LFUN_PARAGRAPH_DOWN:
 581                 break;
 582
 583         case LFUN_LINE_BEGIN_SELECT:
 584         case LFUN_LINE_BEGIN:
 585         case LFUN_WORD_BACKWARD_SELECT:
 586         case LFUN_WORD_BACKWARD:
 587                 cur.selHandle(cmd.action == LFUN_WORD_BACKWARD_SELECT ||
 588                                 cmd.action == LFUN_LINE_BEGIN_SELECT);
 589                 cur.macroModeClose();
 590                 if (cur.pos() != 0) {
 591                         cur.pos() = 0;
 592                 } else if (cur.col() != 0) {
 593                         cur.idx() -= cur.col();
 594                         cur.pos() = 0;
 595                 } else if (cur.idx() != 0) {
 596                         cur.idx() = 0;
 597                         cur.pos() = 0;
 598                 } else {
 599                         cmd = FuncRequest(LFUN_FINISHED_LEFT);
 600                         cur.undispatched();
 601                 }
 602                 break;
 603
 604         case LFUN_WORD_FORWARD_SELECT:
 605         case LFUN_WORD_FORWARD:
 606         case LFUN_LINE_END_SELECT:
 607         case LFUN_LINE_END:
 608                 cur.selHandle(cmd.action == LFUN_WORD_FORWARD_SELECT ||
 609                                 cmd.action == LFUN_LINE_END_SELECT);
 610                 cur.macroModeClose();
 611                 cur.clearTargetX();
 612                 if (cur.pos() != cur.lastpos()) {
 613                         cur.pos() = cur.lastpos();
 614                 } else if (ncols() && (cur.col() != cur.lastcol())) {
 615                         cur.idx() = cur.idx() - cur.col() + cur.lastcol();
 616                         cur.pos() = cur.lastpos();
 617                 } else if (cur.idx() != cur.lastidx()) {
 618                         cur.idx() = cur.lastidx();
 619                         cur.pos() = cur.lastpos();
 620                 } else {
 621                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 622                         cur.undispatched();
 623                 }
 624                 break;
 625
 626         case LFUN_SCREEN_UP_SELECT:
 627         case LFUN_SCREEN_UP:
 628                 cmd = FuncRequest(LFUN_FINISHED_LEFT);
 629                 cur.undispatched();
 630                 break;
 631
 632         case LFUN_SCREEN_DOWN_SELECT:
 633         case LFUN_SCREEN_DOWN:
 634                 cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 635                 cur.undispatched();
 636                 break;
 637
 638         case LFUN_CELL_FORWARD:
 639                 cur.inset().idxNext(cur);
 640                 break;
 641
 642         case LFUN_CELL_BACKWARD:
 643                 cur.inset().idxPrev(cur);
 644                 break;
 645
 646         case LFUN_WORD_DELETE_BACKWARD:
 647         case LFUN_CHAR_DELETE_BACKWARD:
 648                 if (cur.pos() == 0)
 649                         // May affect external cell:
 650                         recordUndoInset(cur, Undo::ATOMIC);
 651                 else
 652                         recordUndo(cur, Undo::ATOMIC);
 653                 cur.backspace();
 654                 break;
 655
 656         case LFUN_WORD_DELETE_FORWARD:
 657         case LFUN_CHAR_DELETE_FORWARD:
 658                 if (cur.pos() == cur.lastpos())
 659                         // May affect external cell:
 660                         recordUndoInset(cur, Undo::ATOMIC);
 661                 else
 662                         recordUndo(cur, Undo::ATOMIC);
 663                 cur.erase();
 664                 break;
 665
 666         case LFUN_ESCAPE:
 667                 if (cur.selection())
 668                         cur.clearSelection();
 669                 else  {
 670                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 671                         cur.undispatched();
 672                 }
 673                 break;
 674
 675         case LFUN_INSET_TOGGLE:
 676                 recordUndo(cur);
 677                 lock(!lock());
 678                 cur.popRight();
 679                 break;
 680
 681         case LFUN_SELF_INSERT:
 682                 if (cmd.argument().size() != 1) {
 683                         recordUndo(cur);
 684                         docstring const arg = cmd.argument();
 685                         if (!interpretString(cur, arg))
 686                                 cur.insert(arg);
 687                         break;
 688                 }
 689                 // Don't record undo steps if we are in macro mode and
 690                 // cmd.argument is the next character of the macro name.
 691                 // Otherwise we'll get an invalid cursor if we undo after
 692                 // the macro was finished and the macro is a known command,
 693                 // e.g. sqrt. LCursor::macroModeClose replaces in this case
 694                 // the InsetMathUnknown with name "frac" by an empty
 695                 // InsetMathFrac -> a pos value > 0 is invalid.
 696                 // A side effect is that an undo before the macro is finished
 697                 // undoes the complete macro, not only the last character.
 698                 if (!cur.inMacroMode())
 699                         recordUndo(cur);
 700
 701                 // spacial handling of space. If we insert an inset
 702                 // via macro mode, we want to put the cursor inside it
 703                 // if relevant. Think typing "\frac<space>".
 704                 if (cmd.argument()[0] == ' '
 705                     && cur.inMacroMode() && cur.macroName() != "\\"
 706                     && cur.macroModeClose()) {
 707                         MathAtom const atom = cur.prevAtom();
 708                         if (atom->asNestInset() && atom->nargs() > 0) {
 709                                 cur.posLeft();
 710                                 cur.pushLeft(*cur.nextInset());
 711                         }
 712                 } else if (!interpretChar(cur, cmd.argument()[0])) {
 713                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 714                         cur.undispatched();
 715                 }
 716                 break;
 717
 718         //case LFUN_SERVER_GET_XY:
 719         //      sprintf(dispatch_buffer, "%d %d",);
 720         //      break;
 721
 722         case LFUN_SERVER_SET_XY: {
 723                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 724                 int x = 0;
 725                 int y = 0;
 726                 istringstream is(to_utf8(cmd.argument()));
 727                 is >> x >> y;
 728                 cur.setScreenPos(x, y);
 729                 break;
 730         }
 731
 732         // Special casing for superscript in case of LyX handling
 733         // dead-keys:
 734         case LFUN_ACCENT_CIRCUMFLEX:
 735                 if (cmd.argument().empty()) {
 736                         // do superscript if LyX handles
 737                         // deadkeys
 738                         recordUndo(cur, Undo::ATOMIC);
 739                         script(cur, true, grabAndEraseSelection(cur));
 740                 }
 741                 break;
 742
 743         case LFUN_ACCENT_UMLAUT:
 744         case LFUN_ACCENT_ACUTE:
 745         case LFUN_ACCENT_GRAVE:
 746         case LFUN_ACCENT_BREVE:
 747         case LFUN_ACCENT_DOT:
 748         case LFUN_ACCENT_MACRON:
 749         case LFUN_ACCENT_CARON:
 750         case LFUN_ACCENT_TILDE:
 751         case LFUN_ACCENT_CEDILLA:
 752         case LFUN_ACCENT_CIRCLE:
 753         case LFUN_ACCENT_UNDERDOT:
 754         case LFUN_ACCENT_TIE:
 755         case LFUN_ACCENT_OGONEK:
 756         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 757                 break;
 758
 759         //  Math fonts
 760         case LFUN_FONT_FREE_APPLY:
 761         case LFUN_FONT_FREE_UPDATE:
 762                 handleFont2(cur, cmd.argument());
 763                 break;
 764
 765         case LFUN_FONT_BOLD:
 766                 if (currentMode() == TEXT_MODE)
 767                         handleFont(cur, cmd.argument(), "textbf");
 768                 else
 769                         handleFont(cur, cmd.argument(), "mathbf");
 770                 break;
 771         case LFUN_FONT_SANS:
 772                 if (currentMode() == TEXT_MODE)
 773                         handleFont(cur, cmd.argument(), "textsf");
 774                 else
 775                         handleFont(cur, cmd.argument(), "mathsf");
 776                 break;
 777         case LFUN_FONT_EMPH:
 778                 if (currentMode() == TEXT_MODE)
 779                         handleFont(cur, cmd.argument(), "emph");
 780                 else
 781                         handleFont(cur, cmd.argument(), "mathcal");
 782                 break;
 783         case LFUN_FONT_ROMAN:
 784                 if (currentMode() == TEXT_MODE)
 785                         handleFont(cur, cmd.argument(), "textrm");
 786                 else
 787                         handleFont(cur, cmd.argument(), "mathrm");
 788                 break;
 789         case LFUN_FONT_CODE:
 790                 if (currentMode() == TEXT_MODE)
 791                         handleFont(cur, cmd.argument(), "texttt");
 792                 else
 793                         handleFont(cur, cmd.argument(), "mathtt");
 794                 break;
 795         case LFUN_FONT_FRAK:
 796                 handleFont(cur, cmd.argument(), "mathfrak");
 797                 break;
 798         case LFUN_FONT_ITAL:
 799                 if (currentMode() == TEXT_MODE)
 800                         handleFont(cur, cmd.argument(), "textit");
 801                 else
 802                         handleFont(cur, cmd.argument(), "mathit");
 803                 break;
 804         case LFUN_FONT_NOUN:
 805                 if (currentMode() == TEXT_MODE)
 806                         // FIXME: should be "noun"
 807                         handleFont(cur, cmd.argument(), "textsc");
 808                 else
 809                         handleFont(cur, cmd.argument(), "mathbb");
 810                 break;
 811         //case LFUN_FONT_FREE_APPLY:
 812                 handleFont(cur, cmd.argument(), "textrm");
 813                 break;
 814         case LFUN_FONT_DEFAULT:
 815                 handleFont(cur, cmd.argument(), "textnormal");
 816                 break;
 817
 818         case LFUN_MATH_MODE: {
 819 #if 1
 820                 // ignore math-mode on when already in math mode
 821                 if (currentMode() == InsetBase::MATH_MODE && cmd.argument() == "on")
 822                         break;
 823                 cur.macroModeClose();
 824                 docstring const save_selection = grabAndEraseSelection(cur);
 825                 selClearOrDel(cur);
 826                 //cur.plainInsert(MathAtom(new InsetMathMBox(cur.bv())));
 827                 cur.plainInsert(MathAtom(new InsetMathBox(from_ascii("mbox"))));
 828                 cur.posLeft();
 829                 cur.pushLeft(*cur.nextInset());
 830                 cur.niceInsert(save_selection);
 831 #else
 832                 if (currentMode() == InsetBase::TEXT_MODE) {
 833                         cur.niceInsert(MathAtom(new InsetMathHull("simple")));
 834                         cur.message(_("create new math text environment ($...$)"));
 835                 } else {
 836                         handleFont(cur, cmd.argument(), "textrm");
 837                         cur.message(_("entered math text mode (textrm)"));
 838                 }
 839 #endif
 840                 break;
 841         }
 842
 843         case LFUN_MATH_SIZE:
 844 #if 0
 845                 recordUndo(cur);
 846                 cur.setSize(arg);
 847 #endif
 848                 break;
 849
 850         case LFUN_MATH_MATRIX: {
 851                 recordUndo(cur, Undo::ATOMIC);
 852                 unsigned int m = 1;
 853                 unsigned int n = 1;
 854                 docstring v_align;
 855                 docstring h_align;
 856                 idocstringstream is(cmd.argument());
 857                 is >> m >> n >> v_align >> h_align;
 858                 if (m < 1)
 859                         m = 1;
 860                 if (n < 1)
 861                         n = 1;
 862                 v_align += 'c';
 863                 cur.niceInsert(
 864                         MathAtom(new InsetMathArray(from_ascii("array"), m, n, (char)v_align[0], h_align)));
 865                 break;
 866         }
 867
 868         case LFUN_MATH_DELIM: {
 869                 docstring ls;
 870                 docstring rs = support::split(cmd.argument(), ls, ' ');
 871                 // Reasonable default values
 872                 if (ls.empty())
 873                         ls = '(';
 874                 if (rs.empty())
 875                         rs = ')';
 876                 recordUndo(cur, Undo::ATOMIC);
 877                 cur.handleNest(MathAtom(new InsetMathDelim(ls, rs)));
 878                 break;
 879         }
 880
 881         case LFUN_MATH_BIGDELIM: {
 882                 docstring const lname  = from_utf8(cmd.getArg(0));
 883                 docstring const ldelim = from_utf8(cmd.getArg(1));
 884                 docstring const rname  = from_utf8(cmd.getArg(2));
 885                 docstring const rdelim = from_utf8(cmd.getArg(3));
 886                 latexkeys const * l = in_word_set(lname);
 887                 bool const have_l = l && l->inset == "big" &&
 888                                     InsetMathBig::isBigInsetDelim(ldelim);
 889                 l = in_word_set(rname);
 890                 bool const have_r = l && l->inset == "big" &&
 891                                     InsetMathBig::isBigInsetDelim(rdelim);
 892                 // We mimic LFUN_MATH_DELIM in case we have an empty left
 893                 // or right delimiter.
 894                 if (have_l || have_r) {
 895                         recordUndo(cur, Undo::ATOMIC);
 896                         docstring const selection = grabAndEraseSelection(cur);
 897                         selClearOrDel(cur);
 898                         if (have_l)
 899                                 cur.insert(MathAtom(new InsetMathBig(lname,
 900                                                                 ldelim)));
 901                         cur.niceInsert(selection);
 902                         if (have_r)
 903                                 cur.insert(MathAtom(new InsetMathBig(rname,
 904                                                                 rdelim)));
 905                 }
 906                 // Don't call cur.undispatched() if we did nothing, this would
 907                 // lead to infinite recursion via LyXText::dispatch().
 908                 break;
 909         }
 910
 911         case LFUN_SPACE_INSERT:
 912         case LFUN_MATH_SPACE:
 913                 recordUndo(cur, Undo::ATOMIC);
 914                 cur.insert(MathAtom(new InsetMathSpace(from_ascii(","))));
 915                 break;
 916
 917         case LFUN_ERT_INSERT:
 918                 // interpret this as if a backslash was typed
 919                 recordUndo(cur, Undo::ATOMIC);
 920                 interpretChar(cur, '\\');
 921                 break;
 922
 923         case LFUN_MATH_SUBSCRIPT:
 924                 // interpret this as if a _ was typed
 925                 recordUndo(cur, Undo::ATOMIC);
 926                 interpretChar(cur, '_');
 927                 break;
 928
 929         case LFUN_MATH_SUPERSCRIPT:
 930                 // interpret this as if a ^ was typed
 931                 recordUndo(cur, Undo::ATOMIC);
 932                 interpretChar(cur, '^');
 933                 break;
 934
 935 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
 936 // handling such that "self-insert" works on "arbitrary stuff" too, and
 937 // math-insert only handles special math things like "matrix".
 938         case LFUN_MATH_INSERT: {
 939                 recordUndo(cur, Undo::ATOMIC);
 940                 if (cmd.argument() == "^" || cmd.argument() == "_") {
 941                         interpretChar(cur, cmd.argument()[0]);
 942                 } else
 943                         cur.niceInsert(cmd.argument());
 944                 break;
 945                 }
 946
 947         case LFUN_DIALOG_SHOW_NEW_INSET: {
 948                 docstring const & name = cmd.argument();
 949                 string data;
 950                 if (name == "ref") {
 951                         RefInset tmp(name);
 952                         data = tmp.createDialogStr(to_utf8(name));
 953                 }
 954                 cur.bv().showInsetDialog(to_utf8(name), data, 0);
 955                 break;
 956         }
 957
 958         case LFUN_INSET_INSERT: {
 959                 MathArray ar;
 960                 if (createInsetMath_fromDialogStr(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 = 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() == 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_type c)
1170 {
1171         //lyxerr << "interpret 2: '" << c << "'" << endl;
1172         docstring save_selection;
1173         if (c == '^' || c == '_')
1174                 save_selection = grabAndEraseSelection(cur);
1175
1176         cur.clearTargetX();
1177
1178         // handle macroMode
1179         if (cur.inMacroMode()) {
1180                 docstring 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 + docstring(1, 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 + docstring(1, c));
1214                         } else {
1215                                 cur.backspace();
1216                                 cur.niceInsert(createInsetMath(docstring(1, c)));
1217                         }
1218                         return true;
1219                 }
1220
1221                 // One character big delimiters. The others are handled in
1222                 // interpretString().
1223                 latexkeys const * l = in_word_set(name.substr(1));
1224                 if (name[0] == '\\' && l && l->inset == "big") {
1225                         docstring delim;
1226                         switch (c) {
1227                         case '{':
1228                                 delim = from_ascii("\\{");
1229                                 break;
1230                         case '}':
1231                                 delim = from_ascii("\\}");
1232                                 break;
1233                         default:
1234                                 delim = docstring(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(from_ascii("\\"), 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(docstring(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, docstring 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                         docstring 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,
1369                 docstring const & 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 }
1424
1425
1426 } // namespace lyx