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/Clipboard.h"
  54 #include "frontends/Painter.h"
  55 #include "frontends/Selection.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         pi.pain.setDrawingEnabled(false);
 245         draw(pi, x, y);
 246         pi.pain.setDrawingEnabled(true);
 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 &, odocstream & 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, docstring const & arg, char const * const font)
 395 {
 396         handleFont(cur, arg, from_ascii(font));
 397 }
 398
 399
 400 void InsetMathNest::handleFont
 401         (LCursor & cur, docstring const & arg, docstring const & font)
 402 {
 403         // this whole function is a hack and won't work for incremental font
 404         // changes...
 405
 406         if (cur.inset().asInsetMath()->name() == font) {
 407                 recordUndoInset(cur, Undo::ATOMIC);
 408                 cur.handleFont(to_utf8(font));
 409         } else {
 410                 recordUndo(cur, Undo::ATOMIC);
 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                 docstring topaste;
 442                 if (cmd.argument().empty() && !theClipboard().isInternal())
 443                         topaste = theClipboard().getAsText();
 444                 else {
 445                         size_t n = 0;
 446                         idocstringstream is(cmd.argument());
 447                         is >> n;
 448                         topaste = cap::getSelection(cur.buffer(), n);
 449                 }
 450                 cur.niceInsert(topaste);
 451                 cur.clearSelection(); // bug 393
 452                 cur.bv().switchKeyMap();
 453                 finishUndo();
 454                 break;
 455         }
 456
 457         case LFUN_CUT:
 458                 recordUndo(cur);
 459                 cutSelection(cur, true, true);
 460                 cur.message(_("Cut"));
 461                 // Prevent stale position >= size crash
 462                 // Probably not necessary anymore, see eraseSelection (gb 2005-10-09)
 463                 cur.normalize();
 464                 break;
 465
 466         case LFUN_COPY:
 467                 copySelection(cur);
 468                 cur.message(_("Copy"));
 469                 break;
 470
 471         case LFUN_MOUSE_PRESS:
 472                 lfunMousePress(cur, cmd);
 473                 break;
 474
 475         case LFUN_MOUSE_MOTION:
 476                 lfunMouseMotion(cur, cmd);
 477                 break;
 478
 479         case LFUN_MOUSE_RELEASE:
 480                 lfunMouseRelease(cur, cmd);
 481                 break;
 482
 483         case LFUN_FINISHED_LEFT:
 484                 cur.bv().cursor() = cur;
 485                 break;
 486
 487         case LFUN_FINISHED_RIGHT:
 488                 ++cur.pos();
 489                 cur.bv().cursor() = cur;
 490                 break;
 491
 492         case LFUN_FINISHED_UP:
 493                 cur.bv().cursor() = cur;
 494                 break;
 495
 496         case LFUN_FINISHED_DOWN:
 497                 ++cur.pos();
 498                 cur.bv().cursor() = cur;
 499                 break;
 500
 501         case LFUN_CHAR_FORWARD:
 502                 // FIXME: we have to enable full redraw here because of the
 503                 // visual box corners that define the inset. If we know for
 504                 // sure that we stay within the same cell we can optimize for
 505                 // that using:
 506                 //cur.updateFlags(Update::FitCursor);
 507         case LFUN_CHAR_FORWARD_SELECT:
 508                 cur.selHandle(cmd.action == LFUN_CHAR_FORWARD_SELECT);
 509                 cur.autocorrect() = false;
 510                 cur.clearTargetX();
 511                 cur.macroModeClose();
 512                 if (cur.pos() != cur.lastpos() && cur.openable(cur.nextAtom())) {
 513                         cur.pushLeft(*cur.nextAtom().nucleus());
 514                         cur.inset().idxFirst(cur);
 515                 } else if (cur.posRight() || idxRight(cur)
 516                         || cur.popRight() || cur.selection())
 517                         ;
 518                 else {
 519                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 520                         cur.undispatched();
 521                 }
 522                 break;
 523
 524         case LFUN_CHAR_BACKWARD:
 525                 // FIXME: we have to enable full redraw here because of the
 526                 // visual box corners that define the inset. If we know for
 527                 // sure that we stay within the same cell we can optimize for
 528                 // that using:
 529                 //cur.updateFlags(Update::FitCursor);
 530         case LFUN_CHAR_BACKWARD_SELECT:
 531                 cur.selHandle(cmd.action == LFUN_CHAR_BACKWARD_SELECT);
 532                 cur.autocorrect() = false;
 533                 cur.clearTargetX();
 534                 cur.macroModeClose();
 535                 if (cur.pos() != 0 && cur.openable(cur.prevAtom())) {
 536                         cur.posLeft();
 537                         cur.push(*cur.nextAtom().nucleus());
 538                         cur.inset().idxLast(cur);
 539                 } else if (cur.posLeft() || idxLeft(cur)
 540                         || cur.popLeft() || cur.selection())
 541                         ;
 542                 else {
 543                         cmd = FuncRequest(LFUN_FINISHED_LEFT);
 544                         cur.undispatched();
 545                 }
 546                 break;
 547
 548         case LFUN_UP:
 549                 // FIXME: we have to enable full redraw here because of the
 550                 // visual box corners that define the inset. If we know for
 551                 // sure that we stay within the same cell we can optimize for
 552                 // that using:
 553                 //cur.updateFlags(Update::FitCursor);
 554         case LFUN_UP_SELECT:
 555                 // FIXME Tried to use clearTargetX and macroModeClose, crashed on cur.up()
 556                 if (cur.inMacroMode()) {
 557                         // Make Helge happy
 558                         cur.macroModeClose();
 559                         break;
 560                 }
 561                 cur.selHandle(cmd.action == LFUN_UP_SELECT);
 562                 if (!cur.up()) {
 563                         cmd = FuncRequest(LFUN_FINISHED_UP);
 564                         cur.undispatched();
 565                 }
 566                 // fixes bug 1598. Please check!
 567                 cur.normalize();
 568                 break;
 569
 570         case LFUN_DOWN:
 571                 // FIXME: we have to enable full redraw here because of the
 572                 // visual box corners that define the inset. If we know for
 573                 // sure that we stay within the same cell we can optimize for
 574                 // that using:
 575                 //cur.updateFlags(Update::FitCursor);
 576         case LFUN_DOWN_SELECT:
 577                 if (cur.inMacroMode()) {
 578                         cur.macroModeClose();
 579                         break;
 580                 }
 581                 cur.selHandle(cmd.action == LFUN_DOWN_SELECT);
 582                 if (!cur.down()) {
 583                         cmd = FuncRequest(LFUN_FINISHED_DOWN);
 584                         cur.undispatched();
 585                 }
 586                 // fixes bug 1598. Please check!
 587                 cur.normalize();
 588                 break;
 589
 590         case LFUN_MOUSE_DOUBLE:
 591         case LFUN_MOUSE_TRIPLE:
 592         case LFUN_WORD_SELECT:
 593                 cur.pos() = 0;
 594                 cur.idx() = 0;
 595                 cur.resetAnchor();
 596                 cur.selection() = true;
 597                 cur.pos() = cur.lastpos();
 598                 cur.idx() = cur.lastidx();
 599                 theSelection().haveSelection(true);
 600                 break;
 601
 602         case LFUN_PARAGRAPH_UP:
 603         case LFUN_PARAGRAPH_DOWN:
 604                 // FIXME: we have to enable full redraw here because of the
 605                 // visual box corners that define the inset. If we know for
 606                 // sure that we stay within the same cell we can optimize for
 607                 // that using:
 608                 //cur.updateFlags(Update::FitCursor);
 609         case LFUN_PARAGRAPH_UP_SELECT:
 610         case LFUN_PARAGRAPH_DOWN_SELECT:
 611                 break;
 612
 613         case LFUN_LINE_BEGIN:
 614         case LFUN_WORD_BACKWARD:
 615                 // FIXME: we have to enable full redraw here because of the
 616                 // visual box corners that define the inset. If we know for
 617                 // sure that we stay within the same cell we can optimize for
 618                 // that using:
 619                 //cur.updateFlags(Update::FitCursor);
 620         case LFUN_LINE_BEGIN_SELECT:
 621         case LFUN_WORD_BACKWARD_SELECT:
 622                 cur.selHandle(cmd.action == LFUN_WORD_BACKWARD_SELECT ||
 623                                 cmd.action == LFUN_LINE_BEGIN_SELECT);
 624                 cur.macroModeClose();
 625                 if (cur.pos() != 0) {
 626                         cur.pos() = 0;
 627                 } else if (cur.col() != 0) {
 628                         cur.idx() -= cur.col();
 629                         cur.pos() = 0;
 630                 } else if (cur.idx() != 0) {
 631                         cur.idx() = 0;
 632                         cur.pos() = 0;
 633                 } else {
 634                         cmd = FuncRequest(LFUN_FINISHED_LEFT);
 635                         cur.undispatched();
 636                 }
 637                 break;
 638
 639         case LFUN_WORD_FORWARD:
 640         case LFUN_LINE_END:
 641                 // FIXME: we have to enable full redraw here because of the
 642                 // visual box corners that define the inset. If we know for
 643                 // sure that we stay within the same cell we can optimize for
 644                 // that using:
 645                 //cur.updateFlags(Update::FitCursor);
 646         case LFUN_WORD_FORWARD_SELECT:
 647         case LFUN_LINE_END_SELECT:
 648                 cur.selHandle(cmd.action == LFUN_WORD_FORWARD_SELECT ||
 649                                 cmd.action == LFUN_LINE_END_SELECT);
 650                 cur.macroModeClose();
 651                 cur.clearTargetX();
 652                 if (cur.pos() != cur.lastpos()) {
 653                         cur.pos() = cur.lastpos();
 654                 } else if (ncols() && (cur.col() != cur.lastcol())) {
 655                         cur.idx() = cur.idx() - cur.col() + cur.lastcol();
 656                         cur.pos() = cur.lastpos();
 657                 } else if (cur.idx() != cur.lastidx()) {
 658                         cur.idx() = cur.lastidx();
 659                         cur.pos() = cur.lastpos();
 660                 } else {
 661                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 662                         cur.undispatched();
 663                 }
 664                 break;
 665
 666         case LFUN_SCREEN_UP_SELECT:
 667         case LFUN_SCREEN_UP:
 668                 cmd = FuncRequest(LFUN_FINISHED_LEFT);
 669                 cur.undispatched();
 670                 break;
 671
 672         case LFUN_SCREEN_DOWN_SELECT:
 673         case LFUN_SCREEN_DOWN:
 674                 cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 675                 cur.undispatched();
 676                 break;
 677
 678         case LFUN_CELL_FORWARD:
 679                 // FIXME: we have to enable full redraw here because of the
 680                 // visual box corners that define the inset. If we know for
 681                 // sure that we stay within the same cell we can optimize for
 682                 // that using:
 683                 //cur.updateFlags(Update::FitCursor);
 684                 cur.inset().idxNext(cur);
 685                 break;
 686
 687         case LFUN_CELL_BACKWARD:
 688                 // FIXME: we have to enable full redraw here because of the
 689                 // visual box corners that define the inset. If we know for
 690                 // sure that we stay within the same cell we can optimize for
 691                 // that using:
 692                 //cur.updateFlags(Update::FitCursor);
 693                 cur.inset().idxPrev(cur);
 694                 break;
 695
 696         case LFUN_WORD_DELETE_BACKWARD:
 697         case LFUN_CHAR_DELETE_BACKWARD:
 698                 if (cur.pos() == 0)
 699                         // May affect external cell:
 700                         recordUndoInset(cur, Undo::ATOMIC);
 701                 else
 702                         recordUndo(cur, Undo::ATOMIC);
 703                 // if the inset can not be removed from within, delete it
 704                 if (!cur.backspace()) {
 705                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 706                         cur.bv().getLyXText()->dispatch(cur, cmd);
 707                 }
 708                 break;
 709
 710         case LFUN_WORD_DELETE_FORWARD:
 711         case LFUN_CHAR_DELETE_FORWARD:
 712                 if (cur.pos() == cur.lastpos())
 713                         // May affect external cell:
 714                         recordUndoInset(cur, Undo::ATOMIC);
 715                 else
 716                         recordUndo(cur, Undo::ATOMIC);
 717                 // if the inset can not be removed from within, delete it
 718                 if (!cur.erase()) {
 719                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 720                         cur.bv().getLyXText()->dispatch(cur, cmd);
 721                 }
 722                 break;
 723
 724         case LFUN_ESCAPE:
 725                 if (cur.selection())
 726                         cur.clearSelection();
 727                 else  {
 728                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 729                         cur.undispatched();
 730                 }
 731                 break;
 732
 733         case LFUN_INSET_TOGGLE:
 734                 recordUndo(cur);
 735                 lock(!lock());
 736                 cur.popRight();
 737                 break;
 738
 739         case LFUN_SELF_INSERT:
 740                 if (cmd.argument().size() != 1) {
 741                         recordUndo(cur);
 742                         docstring const arg = cmd.argument();
 743                         if (!interpretString(cur, arg))
 744                                 cur.insert(arg);
 745                         break;
 746                 }
 747                 // Don't record undo steps if we are in macro mode and
 748                 // cmd.argument is the next character of the macro name.
 749                 // Otherwise we'll get an invalid cursor if we undo after
 750                 // the macro was finished and the macro is a known command,
 751                 // e.g. sqrt. LCursor::macroModeClose replaces in this case
 752                 // the InsetMathUnknown with name "frac" by an empty
 753                 // InsetMathFrac -> a pos value > 0 is invalid.
 754                 // A side effect is that an undo before the macro is finished
 755                 // undoes the complete macro, not only the last character.
 756                 if (!cur.inMacroMode())
 757                         recordUndo(cur);
 758
 759                 // spacial handling of space. If we insert an inset
 760                 // via macro mode, we want to put the cursor inside it
 761                 // if relevant. Think typing "\frac<space>".
 762                 if (cmd.argument()[0] == ' '
 763                     && cur.inMacroMode() && cur.macroName() != "\\"
 764                     && cur.macroModeClose()) {
 765                         MathAtom const atom = cur.prevAtom();
 766                         if (atom->asNestInset() && atom->nargs() > 0) {
 767                                 cur.posLeft();
 768                                 cur.pushLeft(*cur.nextInset());
 769                         }
 770                 } else if (!interpretChar(cur, cmd.argument()[0])) {
 771                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 772                         cur.undispatched();
 773                 }
 774                 break;
 775
 776         //case LFUN_SERVER_GET_XY:
 777         //      sprintf(dispatch_buffer, "%d %d",);
 778         //      break;
 779
 780         case LFUN_SERVER_SET_XY: {
 781                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 782                 int x = 0;
 783                 int y = 0;
 784                 istringstream is(to_utf8(cmd.argument()));
 785                 is >> x >> y;
 786                 cur.setScreenPos(x, y);
 787                 break;
 788         }
 789
 790         // Special casing for superscript in case of LyX handling
 791         // dead-keys:
 792         case LFUN_ACCENT_CIRCUMFLEX:
 793                 if (cmd.argument().empty()) {
 794                         // do superscript if LyX handles
 795                         // deadkeys
 796                         recordUndo(cur, Undo::ATOMIC);
 797                         script(cur, true, grabAndEraseSelection(cur));
 798                 }
 799                 break;
 800
 801         case LFUN_ACCENT_UMLAUT:
 802         case LFUN_ACCENT_ACUTE:
 803         case LFUN_ACCENT_GRAVE:
 804         case LFUN_ACCENT_BREVE:
 805         case LFUN_ACCENT_DOT:
 806         case LFUN_ACCENT_MACRON:
 807         case LFUN_ACCENT_CARON:
 808         case LFUN_ACCENT_TILDE:
 809         case LFUN_ACCENT_CEDILLA:
 810         case LFUN_ACCENT_CIRCLE:
 811         case LFUN_ACCENT_UNDERDOT:
 812         case LFUN_ACCENT_TIE:
 813         case LFUN_ACCENT_OGONEK:
 814         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 815                 break;
 816
 817         //  Math fonts
 818         case LFUN_FONT_FREE_APPLY:
 819         case LFUN_FONT_FREE_UPDATE:
 820                 handleFont2(cur, cmd.argument());
 821                 break;
 822
 823         case LFUN_FONT_BOLD:
 824                 if (currentMode() == TEXT_MODE)
 825                         handleFont(cur, cmd.argument(), "textbf");
 826                 else
 827                         handleFont(cur, cmd.argument(), "mathbf");
 828                 break;
 829         case LFUN_FONT_SANS:
 830                 if (currentMode() == TEXT_MODE)
 831                         handleFont(cur, cmd.argument(), "textsf");
 832                 else
 833                         handleFont(cur, cmd.argument(), "mathsf");
 834                 break;
 835         case LFUN_FONT_EMPH:
 836                 if (currentMode() == TEXT_MODE)
 837                         handleFont(cur, cmd.argument(), "emph");
 838                 else
 839                         handleFont(cur, cmd.argument(), "mathcal");
 840                 break;
 841         case LFUN_FONT_ROMAN:
 842                 if (currentMode() == TEXT_MODE)
 843                         handleFont(cur, cmd.argument(), "textrm");
 844                 else
 845                         handleFont(cur, cmd.argument(), "mathrm");
 846                 break;
 847         case LFUN_FONT_CODE:
 848                 if (currentMode() == TEXT_MODE)
 849                         handleFont(cur, cmd.argument(), "texttt");
 850                 else
 851                         handleFont(cur, cmd.argument(), "mathtt");
 852                 break;
 853         case LFUN_FONT_FRAK:
 854                 handleFont(cur, cmd.argument(), "mathfrak");
 855                 break;
 856         case LFUN_FONT_ITAL:
 857                 if (currentMode() == TEXT_MODE)
 858                         handleFont(cur, cmd.argument(), "textit");
 859                 else
 860                         handleFont(cur, cmd.argument(), "mathit");
 861                 break;
 862         case LFUN_FONT_NOUN:
 863                 if (currentMode() == TEXT_MODE)
 864                         // FIXME: should be "noun"
 865                         handleFont(cur, cmd.argument(), "textsc");
 866                 else
 867                         handleFont(cur, cmd.argument(), "mathbb");
 868                 break;
 869         /*
 870         case LFUN_FONT_FREE_APPLY:
 871                 handleFont(cur, cmd.argument(), "textrm");
 872                 break;
 873         */
 874         case LFUN_FONT_DEFAULT:
 875                 handleFont(cur, cmd.argument(), "textnormal");
 876                 break;
 877
 878         case LFUN_MATH_MODE: {
 879 #if 1
 880                 // ignore math-mode on when already in math mode
 881                 if (currentMode() == InsetBase::MATH_MODE && cmd.argument() == "on")
 882                         break;
 883                 cur.macroModeClose();
 884                 docstring const save_selection = grabAndEraseSelection(cur);
 885                 selClearOrDel(cur);
 886                 //cur.plainInsert(MathAtom(new InsetMathMBox(cur.bv())));
 887                 cur.plainInsert(MathAtom(new InsetMathBox(from_ascii("mbox"))));
 888                 cur.posLeft();
 889                 cur.pushLeft(*cur.nextInset());
 890                 cur.niceInsert(save_selection);
 891 #else
 892                 if (currentMode() == InsetBase::TEXT_MODE) {
 893                         cur.niceInsert(MathAtom(new InsetMathHull("simple")));
 894                         cur.message(_("create new math text environment ($...$)"));
 895                 } else {
 896                         handleFont(cur, cmd.argument(), "textrm");
 897                         cur.message(_("entered math text mode (textrm)"));
 898                 }
 899 #endif
 900                 break;
 901         }
 902
 903         case LFUN_MATH_SIZE:
 904 #if 0
 905                 recordUndo(cur);
 906                 cur.setSize(arg);
 907 #endif
 908                 break;
 909
 910         case LFUN_MATH_MATRIX: {
 911                 recordUndo(cur, Undo::ATOMIC);
 912                 unsigned int m = 1;
 913                 unsigned int n = 1;
 914                 docstring v_align;
 915                 docstring h_align;
 916                 idocstringstream is(cmd.argument());
 917                 is >> m >> n >> v_align >> h_align;
 918                 if (m < 1)
 919                         m = 1;
 920                 if (n < 1)
 921                         n = 1;
 922                 v_align += 'c';
 923                 cur.niceInsert(
 924                         MathAtom(new InsetMathArray(from_ascii("array"), m, n, (char)v_align[0], h_align)));
 925                 break;
 926         }
 927
 928         case LFUN_MATH_DELIM: {
 929                 docstring ls;
 930                 docstring rs = support::split(cmd.argument(), ls, ' ');
 931                 // Reasonable default values
 932                 if (ls.empty())
 933                         ls = '(';
 934                 if (rs.empty())
 935                         rs = ')';
 936                 recordUndo(cur, Undo::ATOMIC);
 937                 cur.handleNest(MathAtom(new InsetMathDelim(ls, rs)));
 938                 break;
 939         }
 940
 941         case LFUN_MATH_BIGDELIM: {
 942                 docstring const lname  = from_utf8(cmd.getArg(0));
 943                 docstring const ldelim = from_utf8(cmd.getArg(1));
 944                 docstring const rname  = from_utf8(cmd.getArg(2));
 945                 docstring const rdelim = from_utf8(cmd.getArg(3));
 946                 latexkeys const * l = in_word_set(lname);
 947                 bool const have_l = l && l->inset == "big" &&
 948                                     InsetMathBig::isBigInsetDelim(ldelim);
 949                 l = in_word_set(rname);
 950                 bool const have_r = l && l->inset == "big" &&
 951                                     InsetMathBig::isBigInsetDelim(rdelim);
 952                 // We mimic LFUN_MATH_DELIM in case we have an empty left
 953                 // or right delimiter.
 954                 if (have_l || have_r) {
 955                         recordUndo(cur, Undo::ATOMIC);
 956                         docstring const selection = grabAndEraseSelection(cur);
 957                         selClearOrDel(cur);
 958                         if (have_l)
 959                                 cur.insert(MathAtom(new InsetMathBig(lname,
 960                                                                 ldelim)));
 961                         cur.niceInsert(selection);
 962                         if (have_r)
 963                                 cur.insert(MathAtom(new InsetMathBig(rname,
 964                                                                 rdelim)));
 965                 }
 966                 // Don't call cur.undispatched() if we did nothing, this would
 967                 // lead to infinite recursion via LyXText::dispatch().
 968                 break;
 969         }
 970
 971         case LFUN_SPACE_INSERT:
 972         case LFUN_MATH_SPACE:
 973                 recordUndo(cur, Undo::ATOMIC);
 974                 cur.insert(MathAtom(new InsetMathSpace(from_ascii(","))));
 975                 break;
 976
 977         case LFUN_ERT_INSERT:
 978                 // interpret this as if a backslash was typed
 979                 recordUndo(cur, Undo::ATOMIC);
 980                 interpretChar(cur, '\\');
 981                 break;
 982
 983         case LFUN_MATH_SUBSCRIPT:
 984                 // interpret this as if a _ was typed
 985                 recordUndo(cur, Undo::ATOMIC);
 986                 interpretChar(cur, '_');
 987                 break;
 988
 989         case LFUN_MATH_SUPERSCRIPT:
 990                 // interpret this as if a ^ was typed
 991                 recordUndo(cur, Undo::ATOMIC);
 992                 interpretChar(cur, '^');
 993                 break;
 994
 995         case LFUN_QUOTE_INSERT:
 996                 // interpret this as if a straight " was typed
 997                 recordUndo(cur, Undo::ATOMIC);
 998                 interpretChar(cur, '\"');
 999                 break;
1000
1001 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
1002 // handling such that "self-insert" works on "arbitrary stuff" too, and
1003 // math-insert only handles special math things like "matrix".
1004         case LFUN_MATH_INSERT: {
1005                 recordUndo(cur, Undo::ATOMIC);
1006                 if (cmd.argument() == "^" || cmd.argument() == "_") {
1007                         interpretChar(cur, cmd.argument()[0]);
1008                 } else
1009                         cur.niceInsert(cmd.argument());
1010                 break;
1011                 }
1012
1013         case LFUN_DIALOG_SHOW_NEW_INSET: {
1014                 docstring const & name = cmd.argument();
1015                 string data;
1016                 if (name == "ref") {
1017                         RefInset tmp(name);
1018                         data = tmp.createDialogStr(to_utf8(name));
1019                 }
1020                 cur.bv().showInsetDialog(to_utf8(name), data, 0);
1021                 break;
1022         }
1023
1024         case LFUN_INSET_INSERT: {
1025                 MathArray ar;
1026                 if (createInsetMath_fromDialogStr(cmd.argument(), ar)) {
1027                         recordUndo(cur);
1028                         cur.insert(ar);
1029                 } else
1030                         cur.undispatched();
1031                 break;
1032         }
1033
1034         default:
1035                 InsetMathDim::doDispatch(cur, cmd);
1036                 break;
1037         }
1038 }
1039
1040
1041 bool InsetMathNest::getStatus(LCursor & cur, FuncRequest const & cmd,
1042                 FuncStatus & flag) const
1043 {
1044         // the font related toggles
1045         //string tc = "mathnormal";
1046         bool ret = true;
1047         string const arg = to_utf8(cmd.argument());
1048         switch (cmd.action) {
1049         case LFUN_TABULAR_FEATURE:
1050                 flag.enabled(false);
1051                 break;
1052 #if 0
1053         case LFUN_TABULAR_FEATURE:
1054                 // FIXME: check temporarily disabled
1055                 // valign code
1056                 char align = mathcursor::valign();
1057                 if (align == '\0') {
1058                         enable = false;
1059                         break;
1060                 }
1061                 if (cmd.argument().empty()) {
1062                         flag.clear();
1063                         break;
1064                 }
1065                 if (!contains("tcb", cmd.argument()[0])) {
1066                         enable = false;
1067                         break;
1068                 }
1069                 flag.setOnOff(cmd.argument()[0] == align);
1070                 break;
1071 #endif
1072         /// We have to handle them since 1.4 blocks all unhandled actions
1073         case LFUN_FONT_ITAL:
1074         case LFUN_FONT_BOLD:
1075         case LFUN_FONT_SANS:
1076         case LFUN_FONT_EMPH:
1077         case LFUN_FONT_CODE:
1078         case LFUN_FONT_NOUN:
1079         case LFUN_FONT_ROMAN:
1080         case LFUN_FONT_DEFAULT:
1081                 flag.enabled(true);
1082                 break;
1083         case LFUN_MATH_MUTATE:
1084                 //flag.setOnOff(mathcursor::formula()->hullType() == to_utf8(cmd.argument()));
1085                 flag.setOnOff(false);
1086                 break;
1087
1088         // we just need to be in math mode to enable that
1089         case LFUN_MATH_SIZE:
1090         case LFUN_MATH_SPACE:
1091         case LFUN_MATH_LIMITS:
1092         case LFUN_MATH_NONUMBER:
1093         case LFUN_MATH_NUMBER:
1094         case LFUN_MATH_EXTERN:
1095                 flag.enabled(true);
1096                 break;
1097
1098         case LFUN_FONT_FRAK:
1099                 flag.enabled(currentMode() != TEXT_MODE);
1100                 break;
1101
1102         case LFUN_MATH_INSERT: {
1103                 bool const textarg =
1104                         arg == "\\textbf"   || arg == "\\textsf" ||
1105                         arg == "\\textrm"   || arg == "\\textmd" ||
1106                         arg == "\\textit"   || arg == "\\textsc" ||
1107                         arg == "\\textsl"   || arg == "\\textup" ||
1108                         arg == "\\texttt"   || arg == "\\textbb" ||
1109                         arg == "\\textnormal";
1110                 flag.enabled(currentMode() != TEXT_MODE || textarg);
1111                 break;
1112         }
1113
1114         case LFUN_MATH_MATRIX:
1115                 flag.enabled(currentMode() == MATH_MODE);
1116                 break;
1117
1118         case LFUN_INSET_INSERT: {
1119                 // Don't test createMathInset_fromDialogStr(), since
1120                 // getStatus is not called with a valid reference and the
1121                 // dialog would not be applyable.
1122                 string const name = cmd.getArg(0);
1123                 flag.enabled(name == "ref");
1124                 break;
1125         }
1126
1127         case LFUN_MATH_DELIM:
1128         case LFUN_MATH_BIGDELIM:
1129                 // Don't do this with multi-cell selections
1130                 flag.enabled(cur.selBegin().idx() == cur.selEnd().idx());
1131                 break;
1132
1133         default:
1134                 ret = false;
1135                 break;
1136         }
1137         return ret;
1138 }
1139
1140
1141 void InsetMathNest::edit(LCursor & cur, bool left)
1142 {
1143         cur.push(*this);
1144         cur.idx() = left ? 0 : cur.lastidx();
1145         cur.pos() = left ? 0 : cur.lastpos();
1146         cur.resetAnchor();
1147         //lyxerr << "InsetMathNest::edit, cur:\n" << cur << endl;
1148 }
1149
1150
1151 InsetBase * InsetMathNest::editXY(LCursor & cur, int x, int y)
1152 {
1153         int idx_min = 0;
1154         int dist_min = 1000000;
1155         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1156                 int const d = cell(i).dist(cur.bv(), x, y);
1157                 if (d < dist_min) {
1158                         dist_min = d;
1159                         idx_min = i;
1160                 }
1161         }
1162         MathArray & ar = cell(idx_min);
1163         cur.push(*this);
1164         cur.idx() = idx_min;
1165         cur.pos() = ar.x2pos(x - ar.xo(cur.bv()));
1166
1167         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1168         if (dist_min == 0) {
1169                 // hit inside cell
1170                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1171                         if (ar[i]->covers(cur.bv(), x, y))
1172                                 return ar[i].nucleus()->editXY(cur, x, y);
1173         }
1174         return this;
1175 }
1176
1177
1178 void InsetMathNest::lfunMousePress(LCursor & cur, FuncRequest & cmd)
1179 {
1180         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1181         BufferView & bv = cur.bv();
1182         if (cmd.button() == mouse_button::button1) {
1183                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1184                 bv.mouseSetCursor(cur);
1185                 // FIXME: we have to enable full redraw here because of the
1186                 // visual box corners that define the inset.
1187                 //cur.noUpdate();
1188         } else if (cmd.button() == mouse_button::button2) {
1189                 MathArray ar;
1190                 if (cur.selection()) {
1191                         // See comment in LyXText::dispatch why we do this
1192                         cap::copySelectionToStack(bv.cursor());
1193                         asArray(bv.cursor().selectionAsString(false), ar);
1194                 } else
1195                         asArray(theSelection().get(), ar);
1196
1197                 cur.insert(ar);
1198                 bv.mouseSetCursor(cur);
1199         }
1200 }
1201
1202
1203 void InsetMathNest::lfunMouseMotion(LCursor & cur, FuncRequest & cmd)
1204 {
1205         // only select with button 1
1206         if (cmd.button() == mouse_button::button1) {
1207                 LCursor & bvcur = cur.bv().cursor();
1208                 if (bvcur.anchor_.hasPart(cur)) {
1209                         //lyxerr << "## lfunMouseMotion: cursor: " << cur << endl;
1210                         bvcur.setCursor(cur);
1211                         bvcur.selection() = true;
1212                         //lyxerr << "MOTION " << bvcur << endl;
1213                 } else
1214                         cur.undispatched();
1215         }
1216 }
1217
1218
1219 void InsetMathNest::lfunMouseRelease(LCursor & cur, FuncRequest & cmd)
1220 {
1221         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1222
1223         if (cmd.button() == mouse_button::button1) {
1224                 if (cur.bv().cursor().selection())
1225                         theSelection().haveSelection(true);
1226                 if (!cur.selection())
1227                         cur.noUpdate();
1228                 return;
1229         }
1230
1231         if (cmd.button() == mouse_button::button3) {
1232                 // try to dispatch to enclosed insets first
1233                 cur.bv().showDialog("mathpanel");
1234                 return;
1235         }
1236
1237         cur.undispatched();
1238 }
1239
1240
1241 bool InsetMathNest::interpretChar(LCursor & cur, char_type c)
1242 {
1243         //lyxerr << "interpret 2: '" << c << "'" << endl;
1244         docstring save_selection;
1245         if (c == '^' || c == '_')
1246                 save_selection = grabAndEraseSelection(cur);
1247
1248         cur.clearTargetX();
1249
1250         // handle macroMode
1251         if (cur.inMacroMode()) {
1252                 docstring name = cur.macroName();
1253
1254                 /// are we currently typing '#1' or '#2' or...?
1255                 if (name == "\\#") {
1256                         cur.backspace();
1257                         int n = c - '0';
1258                         if (n >= 1 && n <= 9)
1259                                 cur.insert(new MathMacroArgument(n));
1260                         return true;
1261                 }
1262
1263                 if (isalpha(c)) {
1264                         cur.activeMacro()->setName(name + docstring(1, c));
1265                         return true;
1266                 }
1267
1268                 // handle 'special char' macros
1269                 if (name == "\\") {
1270                         // remove the '\\'
1271                         if (c == '\\') {
1272                                 cur.backspace();
1273                                 if (currentMode() == InsetMath::TEXT_MODE)
1274                                         cur.niceInsert(createInsetMath("textbackslash"));
1275                                 else
1276                                         cur.niceInsert(createInsetMath("backslash"));
1277                         } else if (c == '{') {
1278                                 cur.backspace();
1279                                 cur.niceInsert(MathAtom(new InsetMathBrace));
1280                         } else if (c == '%') {
1281                                 cur.backspace();
1282                                 cur.niceInsert(MathAtom(new InsetMathComment));
1283                         } else if (c == '#') {
1284                                 BOOST_ASSERT(cur.activeMacro());
1285                                 cur.activeMacro()->setName(name + docstring(1, c));
1286                         } else {
1287                                 cur.backspace();
1288                                 cur.niceInsert(createInsetMath(docstring(1, c)));
1289                         }
1290                         return true;
1291                 }
1292
1293                 // One character big delimiters. The others are handled in
1294                 // interpretString().
1295                 latexkeys const * l = in_word_set(name.substr(1));
1296                 if (name[0] == '\\' && l && l->inset == "big") {
1297                         docstring delim;
1298                         switch (c) {
1299                         case '{':
1300                                 delim = from_ascii("\\{");
1301                                 break;
1302                         case '}':
1303                                 delim = from_ascii("\\}");
1304                                 break;
1305                         default:
1306                                 delim = docstring(1, c);
1307                                 break;
1308                         }
1309                         if (InsetMathBig::isBigInsetDelim(delim)) {
1310                                 // name + delim ared a valid InsetMathBig.
1311                                 // We can't use cur.macroModeClose() because
1312                                 // it does not handle delim.
1313                                 InsetMathUnknown * p = cur.activeMacro();
1314                                 p->finalize();
1315                                 --cur.pos();
1316                                 cur.cell().erase(cur.pos());
1317                                 cur.plainInsert(MathAtom(
1318                                         new InsetMathBig(name.substr(1), delim)));
1319                                 return true;
1320                         }
1321                 }
1322
1323                 // leave macro mode and try again if necessary
1324                 cur.macroModeClose();
1325                 if (c == '{')
1326                         cur.niceInsert(MathAtom(new InsetMathBrace));
1327                 else if (c != ' ')
1328                         interpretChar(cur, c);
1329                 return true;
1330         }
1331
1332         // This is annoying as one has to press <space> far too often.
1333         // Disable it.
1334
1335 #if 0
1336                 // leave autocorrect mode if necessary
1337                 if (autocorrect() && c == ' ') {
1338                         autocorrect() = false;
1339                         return true;
1340                 }
1341 #endif
1342
1343         // just clear selection on pressing the space bar
1344         if (cur.selection() && c == ' ') {
1345                 cur.selection() = false;
1346                 return true;
1347         }
1348
1349         selClearOrDel(cur);
1350
1351         if (c == '\\') {
1352                 //lyxerr << "starting with macro" << endl;
1353                 cur.insert(MathAtom(new InsetMathUnknown(from_ascii("\\"), false)));
1354                 return true;
1355         }
1356
1357         if (c == '\n') {
1358                 if (currentMode() == InsetMath::TEXT_MODE)
1359                         cur.insert(c);
1360                 return true;
1361         }
1362
1363         if (c == ' ') {
1364                 if (currentMode() == InsetMath::TEXT_MODE) {
1365                         // insert spaces in text mode,
1366                         // but suppress direct insertion of two spaces in a row
1367                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1368                         // it is better than nothing...
1369                         if (!cur.pos() != 0 || cur.prevAtom()->getChar() != ' ') {
1370                                 cur.insert(c);
1371                                 // FIXME: we have to enable full redraw here because of the
1372                                 // visual box corners that define the inset. If we know for
1373                                 // sure that we stay within the same cell we can optimize for
1374                                 // that using:
1375                                 //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1376                         }
1377                         return true;
1378                 }
1379                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1380                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1381                         // FIXME: we have to enable full redraw here because of the
1382                         // visual box corners that define the inset. If we know for
1383                         // sure that we stay within the same cell we can optimize for
1384                         // that using:
1385                         //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1386                         return true;
1387                 }
1388
1389                 if (cur.popRight()) {
1390                         // FIXME: we have to enable full redraw here because of the
1391                         // visual box corners that define the inset. If we know for
1392                         // sure that we stay within the same cell we can optimize for
1393                         // that using:
1394                         //cur.updateFlags(Update::FitCursor);
1395                         return true;
1396                 }
1397
1398                 // if we are at the very end, leave the formula
1399                 return cur.pos() != cur.lastpos();
1400         }
1401
1402         // These shouldn't work in text mode:
1403         if (currentMode() != InsetMath::TEXT_MODE) {
1404                 if (c == '_') {
1405                         script(cur, false, save_selection);
1406                         return true;
1407                 }
1408                 if (c == '^') {
1409                         script(cur, true, save_selection);
1410                         return true;
1411                 }
1412                 if (c == '~') {
1413                         cur.niceInsert(createInsetMath("sim"));
1414                         return true;
1415                 }
1416         }
1417
1418         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1419             c == '%' || c == '_' || c == '^') {
1420                 cur.niceInsert(createInsetMath(docstring(1, c)));
1421                 return true;
1422         }
1423
1424
1425         // try auto-correction
1426         //if (autocorrect() && hasPrevAtom() && math_autocorrect(prevAtom(), c))
1427         //      return true;
1428
1429         // no special circumstances, so insert the character without any fuss
1430         cur.insert(c);
1431         cur.autocorrect() = true;
1432         return true;
1433 }
1434
1435
1436 bool InsetMathNest::interpretString(LCursor & cur, docstring const & str)
1437 {
1438         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1439         // possible
1440         if (!cur.empty() && cur.pos() > 0 &&
1441             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1442                 if (InsetMathBig::isBigInsetDelim(str)) {
1443                         docstring prev = asString(cur.cell()[cur.pos() - 1]);
1444                         if (prev[0] == '\\') {
1445                                 prev = prev.substr(1);
1446                                 latexkeys const * l = in_word_set(prev);
1447                                 if (l && l->inset == "big") {
1448                                         cur.cell()[cur.pos() - 1] =
1449                                                 MathAtom(new InsetMathBig(prev, str));
1450                                         return true;
1451                                 }
1452                         }
1453                 }
1454         }
1455         return false;
1456 }
1457
1458
1459 bool InsetMathNest::script(LCursor & cur, bool up,
1460                 docstring const & save_selection)
1461 {
1462         // Hack to get \^ and \_ working
1463         //lyxerr << "handling script: up: " << up << endl;
1464         if (cur.inMacroMode() && cur.macroName() == "\\") {
1465                 if (up)
1466                         cur.niceInsert(createInsetMath("mathcircumflex"));
1467                 else
1468                         interpretChar(cur, '_');
1469                 return true;
1470         }
1471
1472         cur.macroModeClose();
1473         if (asScriptInset() && cur.idx() == 0) {
1474                 // we are in a nucleus of a script inset, move to _our_ script
1475                 InsetMathScript * inset = asScriptInset();
1476                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1477                 inset->ensure(up);
1478                 cur.idx() = inset->idxOfScript(up);
1479                 cur.pos() = 0;
1480         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1481                 --cur.pos();
1482                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1483                 cur.push(*inset);
1484                 inset->ensure(up);
1485                 cur.idx() = inset->idxOfScript(up);
1486                 cur.pos() = cur.lastpos();
1487         } else {
1488                 // convert the thing to our left to a scriptinset or create a new
1489                 // one if in the very first position of the array
1490                 if (cur.pos() == 0) {
1491                         //lyxerr << "new scriptinset" << endl;
1492                         cur.insert(new InsetMathScript(up));
1493                 } else {
1494                         //lyxerr << "converting prev atom " << endl;
1495                         cur.prevAtom() = MathAtom(new InsetMathScript(cur.prevAtom(), up));
1496                 }
1497                 --cur.pos();
1498                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1499                 // See comment in MathParser.C for special handling of {}-bases
1500
1501                 cur.push(*inset);
1502                 cur.idx() = 1;
1503                 cur.pos() = 0;
1504         }
1505         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1506         cur.niceInsert(save_selection);
1507         cur.resetAnchor();
1508         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1509         return true;
1510 }
1511
1512
1513 } // namespace lyx