src/mathed/InsetMathNest.cpp

   1 /**
   2  * \file InsetMathNest.cpp
   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 "InsetMathDelim.h"
  22 #include "InsetMathHull.h"
  23 //#include "InsetMathMBox.h"
  24 #include "InsetMathRef.h"
  25 #include "InsetMathScript.h"
  26 #include "InsetMathSpace.h"
  27 #include "InsetMathSymbol.h"
  28 #include "InsetMathUnknown.h"
  29 #include "MathData.h"
  30 #include "MathFactory.h"
  31 #include "MathMacroArgument.h"
  32 #include "MathParser.h"
  33 #include "MathStream.h"
  34 #include "MathSupport.h"
  35
  36 #include "bufferview_funcs.h"
  37 #include "BufferView.h"
  38 #include "Color.h"
  39 #include "CoordCache.h"
  40 #include "Cursor.h"
  41 #include "CutAndPaste.h"
  42 #include "debug.h"
  43 #include "DispatchResult.h"
  44 #include "FuncRequest.h"
  45 #include "FuncStatus.h"
  46 #include "gettext.h"
  47 #include "Text.h"
  48 #include "OutputParams.h"
  49 #include "Undo.h"
  50
  51 #include "support/lstrings.h"
  52 #include "support/textutils.h"
  53
  54 #include "frontends/Clipboard.h"
  55 #include "frontends/Painter.h"
  56 #include "frontends/Selection.h"
  57
  58 #include "FuncRequest.h"
  59
  60 #include <sstream>
  61
  62
  63 namespace lyx {
  64
  65 using cap::copySelection;
  66 using cap::grabAndEraseSelection;
  67 using cap::cutSelection;
  68 using cap::replaceSelection;
  69 using cap::selClearOrDel;
  70
  71 using std::endl;
  72 using std::string;
  73 using std::istringstream;
  74
  75
  76 InsetMathNest::InsetMathNest(idx_type nargs)
  77         : cells_(nargs), lock_(false)
  78 {}
  79
  80
  81 InsetMath::idx_type InsetMathNest::nargs() const
  82 {
  83         return cells_.size();
  84 }
  85
  86
  87 void InsetMathNest::cursorPos(BufferView const & bv,
  88                 CursorSlice const & sl, bool /*boundary*/,
  89                 int & x, int & y) const
  90 {
  91 // FIXME: This is a hack. Ideally, the coord cache should not store
  92 // absolute positions, but relative ones. This would mean to call
  93 // setXY() not in MathData::draw(), but in the parent insets' draw()
  94 // with the correctly adjusted x,y values. But this means that we'd have
  95 // to touch all (math)inset's draw() methods. Right now, we'll store
  96 // absolute value, and make them here relative, only to make them
  97 // absolute again when actually drawing the cursor. What a mess.
  98         BOOST_ASSERT(ptr_cmp(&sl.inset(), this));
  99         MathData const & ar = sl.cell();
 100         CoordCache const & coord_cache = bv.coordCache();
 101         if (!coord_cache.getArrays().has(&ar)) {
 102                 // this can (semi-)legally happen if we just created this cell
 103                 // and it never has been drawn before. So don't ASSERT.
 104                 //lyxerr << "no cached data for array " << &ar << endl;
 105                 x = 0;
 106                 y = 0;
 107                 return;
 108         }
 109         Point const pt = coord_cache.getArrays().xy(&ar);
 110         if (!coord_cache.getInsets().has(this)) {
 111                 // same as above
 112                 //lyxerr << "no cached data for inset " << this << endl;
 113                 x = 0;
 114                 y = 0;
 115                 return;
 116         }
 117         Point const pt2 = coord_cache.getInsets().xy(this);
 118         //lyxerr << "retrieving position cache for MathData "
 119         //      << pt.x_ << ' ' << pt.y_ << std::endl;
 120         x = pt.x_ - pt2.x_ + ar.pos2x(sl.pos());
 121         y = pt.y_ - pt2.y_;
 122 //      lyxerr << "pt.y_ : " << pt.y_ << " pt2_.y_ : " << pt2.y_
 123 //              << " asc: " << ascent() << "  des: " << descent()
 124 //              << " ar.asc: " << ar.ascent() << " ar.des: " << ar.descent() << endl;
 125         // move cursor visually into empty cells ("blue rectangles");
 126         if (ar.empty())
 127                 x += 2;
 128 }
 129
 130
 131 void InsetMathNest::metrics(MetricsInfo const & mi) const
 132 {
 133         MetricsInfo m = mi;
 134         for (idx_type i = 0, n = nargs(); i != n; ++i)
 135                 cell(i).metrics(m);
 136 }
 137
 138
 139 bool InsetMathNest::idxNext(Cursor & cur) const
 140 {
 141         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 142         if (cur.idx() == cur.lastidx())
 143                 return false;
 144         ++cur.idx();
 145         cur.pos() = 0;
 146         return true;
 147 }
 148
 149
 150 bool InsetMathNest::idxRight(Cursor & cur) const
 151 {
 152         return idxNext(cur);
 153 }
 154
 155
 156 bool InsetMathNest::idxPrev(Cursor & cur) const
 157 {
 158         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 159         if (cur.idx() == 0)
 160                 return false;
 161         --cur.idx();
 162         cur.pos() = cur.lastpos();
 163         return true;
 164 }
 165
 166
 167 bool InsetMathNest::idxLeft(Cursor & cur) const
 168 {
 169         return idxPrev(cur);
 170 }
 171
 172
 173 bool InsetMathNest::idxFirst(Cursor & cur) const
 174 {
 175         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 176         if (nargs() == 0)
 177                 return false;
 178         cur.idx() = 0;
 179         cur.pos() = 0;
 180         return true;
 181 }
 182
 183
 184 bool InsetMathNest::idxLast(Cursor & cur) const
 185 {
 186         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 187         if (nargs() == 0)
 188                 return false;
 189         cur.idx() = cur.lastidx();
 190         cur.pos() = cur.lastpos();
 191         return true;
 192 }
 193
 194
 195 void InsetMathNest::dump() const
 196 {
 197         odocstringstream oss;
 198         WriteStream os(oss);
 199         os << "---------------------------------------------\n";
 200         write(os);
 201         os << "\n";
 202         for (idx_type i = 0, n = nargs(); i != n; ++i)
 203                 os << cell(i) << "\n";
 204         os << "---------------------------------------------\n";
 205         lyxerr << to_utf8(oss.str());
 206 }
 207
 208
 209 void InsetMathNest::draw(PainterInfo & pi, int x, int y) const
 210 {
 211 #if 0
 212         if (lock_)
 213                 pi.pain.fillRectangle(x, y - ascent(), width(), height(),
 214                                         Color::mathlockbg);
 215 #endif
 216         setPosCache(pi, x, y);
 217 }
 218
 219
 220 void InsetMathNest::drawSelection(PainterInfo & pi, int x, int y) const
 221 {
 222         BufferView & bv = *pi.base.bv;
 223         // this should use the x/y values given, not the cached values
 224         Cursor & cur = bv.cursor();
 225         if (!cur.selection())
 226                 return;
 227         if (!ptr_cmp(&cur.inset(), this))
 228                 return;
 229
 230         // FIXME: hack to get position cache warm
 231         pi.pain.setDrawingEnabled(false);
 232         draw(pi, x, y);
 233         pi.pain.setDrawingEnabled(true);
 234
 235         CursorSlice s1 = cur.selBegin();
 236         CursorSlice s2 = cur.selEnd();
 237
 238         //lyxerr << "InsetMathNest::drawing selection: "
 239         //      << " s1: " << s1 << " s2: " << s2 << endl;
 240         if (s1.idx() == s2.idx()) {
 241                 MathData const & c = cell(s1.idx());
 242                 int x1 = c.xo(bv) + c.pos2x(s1.pos());
 243                 int y1 = c.yo(bv) - c.ascent();
 244                 int x2 = c.xo(bv) + c.pos2x(s2.pos());
 245                 int y2 = c.yo(bv) + c.descent();
 246                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, Color::selection);
 247         //lyxerr << "InsetMathNest::drawing selection 3: "
 248         //      << " x1: " << x1 << " x2: " << x2
 249         //      << " y1: " << y1 << " y2: " << y2 << endl;
 250         } else {
 251                 for (idx_type i = 0; i < nargs(); ++i) {
 252                         if (idxBetween(i, s1.idx(), s2.idx())) {
 253                                 MathData const & c = cell(i);
 254                                 int x1 = c.xo(bv);
 255                                 int y1 = c.yo(bv) - c.ascent();
 256                                 int x2 = c.xo(bv) + c.width();
 257                                 int y2 = c.yo(bv) + c.descent();
 258                                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, Color::selection);
 259                         }
 260                 }
 261         }
 262 }
 263
 264
 265 void InsetMathNest::validate(LaTeXFeatures & features) const
 266 {
 267         for (idx_type i = 0; i < nargs(); ++i)
 268                 cell(i).validate(features);
 269 }
 270
 271
 272 void InsetMathNest::replace(ReplaceData & rep)
 273 {
 274         for (idx_type i = 0; i < nargs(); ++i)
 275                 cell(i).replace(rep);
 276 }
 277
 278
 279 bool InsetMathNest::contains(MathData const & ar) const
 280 {
 281         for (idx_type i = 0; i < nargs(); ++i)
 282                 if (cell(i).contains(ar))
 283                         return true;
 284         return false;
 285 }
 286
 287
 288 bool InsetMathNest::lock() const
 289 {
 290         return lock_;
 291 }
 292
 293
 294 void InsetMathNest::lock(bool l)
 295 {
 296         lock_ = l;
 297 }
 298
 299
 300 bool InsetMathNest::isActive() const
 301 {
 302         return nargs() > 0;
 303 }
 304
 305
 306 MathData InsetMathNest::glue() const
 307 {
 308         MathData ar;
 309         for (size_t i = 0; i < nargs(); ++i)
 310                 ar.append(cell(i));
 311         return ar;
 312 }
 313
 314
 315 void InsetMathNest::write(WriteStream & os) const
 316 {
 317         os << '\\' << name().c_str();
 318         for (size_t i = 0; i < nargs(); ++i)
 319                 os << '{' << cell(i) << '}';
 320         if (nargs() == 0)
 321                 os.pendingSpace(true);
 322         if (lock_ && !os.latex()) {
 323                 os << "\\lyxlock";
 324                 os.pendingSpace(true);
 325         }
 326 }
 327
 328
 329 void InsetMathNest::normalize(NormalStream & os) const
 330 {
 331         os << '[' << name().c_str();
 332         for (size_t i = 0; i < nargs(); ++i)
 333                 os << ' ' << cell(i);
 334         os << ']';
 335 }
 336
 337
 338 int InsetMathNest::latex(Buffer const &, odocstream & os,
 339                         OutputParams const & runparams) const
 340 {
 341         WriteStream wi(os, runparams.moving_arg, true);
 342         write(wi);
 343         return wi.line();
 344 }
 345
 346
 347 bool InsetMathNest::notifyCursorLeaves(Cursor & /*cur*/)
 348 {
 349 #ifdef WITH_WARNINGS
 350 #warning look here
 351 #endif
 352 #if 0
 353         MathData & ar = cur.cell();
 354         // remove base-only "scripts"
 355         for (pos_type i = 0; i + 1 < ar.size(); ++i) {
 356                 InsetMathScript * p = operator[](i).nucleus()->asScriptInset();
 357                 if (p && p->nargs() == 1) {
 358                         MathData ar = p->nuc();
 359                         erase(i);
 360                         insert(i, ar);
 361                         cur.adjust(i, ar.size() - 1);
 362                 }
 363         }
 364
 365         // glue adjacent font insets of the same kind
 366         for (pos_type i = 0; i + 1 < size(); ++i) {
 367                 InsetMathFont * p = operator[](i).nucleus()->asFontInset();
 368                 InsetMathFont const * q = operator[](i + 1)->asFontInset();
 369                 if (p && q && p->name() == q->name()) {
 370                         p->cell(0).append(q->cell(0));
 371                         erase(i + 1);
 372                         cur.adjust(i, -1);
 373                 }
 374         }
 375 #endif
 376         return false;
 377 }
 378
 379
 380 void InsetMathNest::handleFont
 381         (Cursor & cur, docstring const & arg, char const * const font)
 382 {
 383         handleFont(cur, arg, from_ascii(font));
 384 }
 385
 386
 387 void InsetMathNest::handleFont
 388         (Cursor & cur, docstring const & arg, docstring const & font)
 389 {
 390         // this whole function is a hack and won't work for incremental font
 391         // changes...
 392
 393         if (cur.inset().asInsetMath()->name() == font) {
 394                 recordUndoInset(cur, Undo::ATOMIC);
 395                 cur.handleFont(to_utf8(font));
 396         } else {
 397                 recordUndo(cur, Undo::ATOMIC);
 398                 cur.handleNest(createInsetMath(font));
 399                 cur.insert(arg);
 400         }
 401 }
 402
 403
 404 void InsetMathNest::handleFont2(Cursor & cur, docstring const & arg)
 405 {
 406         recordUndo(cur, Undo::ATOMIC);
 407         Font font;
 408         bool b;
 409         bv_funcs::string2font(to_utf8(arg), font, b);
 410         if (font.color() != Color::inherit) {
 411                 MathAtom at = MathAtom(new InsetMathColor(true, font.color()));
 412                 cur.handleNest(at, 0);
 413         }
 414 }
 415
 416
 417 void InsetMathNest::doDispatch(Cursor & cur, FuncRequest & cmd)
 418 {
 419         //lyxerr << "InsetMathNest: request: " << cmd << std::endl;
 420         //CursorSlice sl = cur.current();
 421
 422         switch (cmd.action) {
 423
 424         case LFUN_PASTE: {
 425                 recordUndo(cur);
 426                 cur.message(_("Paste"));
 427                 replaceSelection(cur);
 428                 docstring topaste;
 429                 if (cmd.argument().empty() && !theClipboard().isInternal())
 430                         topaste = theClipboard().getAsText();
 431                 else {
 432                         size_t n = 0;
 433                         idocstringstream is(cmd.argument());
 434                         is >> n;
 435                         topaste = cap::getSelection(cur.buffer(), n);
 436                 }
 437                 cur.niceInsert(topaste);
 438                 cur.clearSelection(); // bug 393
 439                 cur.bv().switchKeyMap();
 440                 finishUndo();
 441                 break;
 442         }
 443
 444         case LFUN_CUT:
 445                 recordUndo(cur);
 446                 cutSelection(cur, true, true);
 447                 cur.message(_("Cut"));
 448                 // Prevent stale position >= size crash
 449                 // Probably not necessary anymore, see eraseSelection (gb 2005-10-09)
 450                 cur.normalize();
 451                 break;
 452
 453         case LFUN_COPY:
 454                 copySelection(cur);
 455                 cur.message(_("Copy"));
 456                 break;
 457
 458         case LFUN_MOUSE_PRESS:
 459                 lfunMousePress(cur, cmd);
 460                 break;
 461
 462         case LFUN_MOUSE_MOTION:
 463                 lfunMouseMotion(cur, cmd);
 464                 break;
 465
 466         case LFUN_MOUSE_RELEASE:
 467                 lfunMouseRelease(cur, cmd);
 468                 break;
 469
 470         case LFUN_FINISHED_LEFT:
 471                 cur.bv().cursor() = cur;
 472                 break;
 473
 474         case LFUN_FINISHED_RIGHT:
 475                 ++cur.pos();
 476                 cur.bv().cursor() = cur;
 477                 break;
 478
 479         case LFUN_FINISHED_UP:
 480                 cur.bv().cursor() = cur;
 481                 break;
 482
 483         case LFUN_FINISHED_DOWN:
 484                 ++cur.pos();
 485                 cur.bv().cursor() = cur;
 486                 break;
 487
 488         case LFUN_CHAR_FORWARD:
 489                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 490         case LFUN_CHAR_FORWARD_SELECT:
 491                 cur.selHandle(cmd.action == LFUN_CHAR_FORWARD_SELECT);
 492                 cur.autocorrect() = false;
 493                 cur.clearTargetX();
 494                 cur.macroModeClose();
 495                 if (reverseDirectionNeeded(cur))
 496                         goto goto_char_backwards;
 497
 498 goto_char_forwards:
 499                 if (cur.pos() != cur.lastpos() && cur.openable(cur.nextAtom())) {
 500                         cur.pushLeft(*cur.nextAtom().nucleus());
 501                         cur.inset().idxFirst(cur);
 502                 } else if (cur.posRight() || idxRight(cur)
 503                         || cur.popRight() || cur.selection())
 504                         ;
 505                 else {
 506                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 507                         cur.undispatched();
 508                 }
 509                 break;
 510
 511         case LFUN_CHAR_BACKWARD:
 512                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 513         case LFUN_CHAR_BACKWARD_SELECT:
 514                 cur.selHandle(cmd.action == LFUN_CHAR_BACKWARD_SELECT);
 515                 cur.autocorrect() = false;
 516                 cur.clearTargetX();
 517                 cur.macroModeClose();
 518                 if (reverseDirectionNeeded(cur))
 519                         goto goto_char_forwards;
 520
 521 goto_char_backwards:
 522                 if (cur.pos() != 0 && cur.openable(cur.prevAtom())) {
 523                         cur.posLeft();
 524                         cur.push(*cur.nextAtom().nucleus());
 525                         cur.inset().idxLast(cur);
 526                 } else if (cur.posLeft() || idxLeft(cur)
 527                         || cur.popLeft() || cur.selection())
 528                         ;
 529                 else {
 530                         cmd = FuncRequest(LFUN_FINISHED_LEFT);
 531                         cur.undispatched();
 532                 }
 533                 break;
 534
 535         case LFUN_UP:
 536                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 537         case LFUN_UP_SELECT:
 538                 // FIXME Tried to use clearTargetX and macroModeClose, crashed on cur.up()
 539                 if (cur.inMacroMode()) {
 540                         // Make Helge happy
 541                         cur.macroModeClose();
 542                         break;
 543                 }
 544                 cur.selHandle(cmd.action == LFUN_UP_SELECT);
 545                 if (!cur.up()) {
 546                         cmd = FuncRequest(LFUN_FINISHED_UP);
 547                         cur.undispatched();
 548                 }
 549                 // fixes bug 1598. Please check!
 550                 cur.normalize();
 551                 break;
 552
 553         case LFUN_DOWN:
 554                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 555         case LFUN_DOWN_SELECT:
 556                 if (cur.inMacroMode()) {
 557                         cur.macroModeClose();
 558                         break;
 559                 }
 560                 cur.selHandle(cmd.action == LFUN_DOWN_SELECT);
 561                 if (!cur.down()) {
 562                         cmd = FuncRequest(LFUN_FINISHED_DOWN);
 563                         cur.undispatched();
 564                 }
 565                 // fixes bug 1598. Please check!
 566                 cur.normalize();
 567                 break;
 568
 569         case LFUN_MOUSE_DOUBLE:
 570         case LFUN_MOUSE_TRIPLE:
 571         case LFUN_WORD_SELECT:
 572                 cur.pos() = 0;
 573                 cur.idx() = 0;
 574                 cur.resetAnchor();
 575                 cur.selection() = true;
 576                 cur.pos() = cur.lastpos();
 577                 cur.idx() = cur.lastidx();
 578                 cap::saveSelection(cur);
 579                 break;
 580
 581         case LFUN_PARAGRAPH_UP:
 582         case LFUN_PARAGRAPH_DOWN:
 583                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 584         case LFUN_PARAGRAPH_UP_SELECT:
 585         case LFUN_PARAGRAPH_DOWN_SELECT:
 586                 break;
 587
 588         case LFUN_LINE_BEGIN:
 589         case LFUN_WORD_BACKWARD:
 590                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 591         case LFUN_LINE_BEGIN_SELECT:
 592         case LFUN_WORD_BACKWARD_SELECT:
 593                 cur.selHandle(cmd.action == LFUN_WORD_BACKWARD_SELECT ||
 594                                 cmd.action == LFUN_LINE_BEGIN_SELECT);
 595                 cur.macroModeClose();
 596                 if (cur.pos() != 0) {
 597                         cur.pos() = 0;
 598                 } else if (cur.col() != 0) {
 599                         cur.idx() -= cur.col();
 600                         cur.pos() = 0;
 601                 } else if (cur.idx() != 0) {
 602                         cur.idx() = 0;
 603                         cur.pos() = 0;
 604                 } else {
 605                         cmd = FuncRequest(LFUN_FINISHED_LEFT);
 606                         cur.undispatched();
 607                 }
 608                 break;
 609
 610         case LFUN_WORD_FORWARD:
 611         case LFUN_LINE_END:
 612                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 613         case LFUN_WORD_FORWARD_SELECT:
 614         case LFUN_LINE_END_SELECT:
 615                 cur.selHandle(cmd.action == LFUN_WORD_FORWARD_SELECT ||
 616                                 cmd.action == LFUN_LINE_END_SELECT);
 617                 cur.macroModeClose();
 618                 cur.clearTargetX();
 619                 if (cur.pos() != cur.lastpos()) {
 620                         cur.pos() = cur.lastpos();
 621                 } else if (ncols() && (cur.col() != cur.lastcol())) {
 622                         cur.idx() = cur.idx() - cur.col() + cur.lastcol();
 623                         cur.pos() = cur.lastpos();
 624                 } else if (cur.idx() != cur.lastidx()) {
 625                         cur.idx() = cur.lastidx();
 626                         cur.pos() = cur.lastpos();
 627                 } else {
 628                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 629                         cur.undispatched();
 630                 }
 631                 break;
 632
 633         case LFUN_SCREEN_UP_SELECT:
 634         case LFUN_SCREEN_UP:
 635                 cmd = FuncRequest(LFUN_FINISHED_LEFT);
 636                 cur.undispatched();
 637                 break;
 638
 639         case LFUN_SCREEN_DOWN_SELECT:
 640         case LFUN_SCREEN_DOWN:
 641                 cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 642                 cur.undispatched();
 643                 break;
 644
 645         case LFUN_CELL_FORWARD:
 646                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 647                 cur.inset().idxNext(cur);
 648                 break;
 649
 650         case LFUN_CELL_BACKWARD:
 651                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 652                 cur.inset().idxPrev(cur);
 653                 break;
 654
 655         case LFUN_WORD_DELETE_BACKWARD:
 656         case LFUN_CHAR_DELETE_BACKWARD:
 657                 if (cur.pos() == 0)
 658                         // May affect external cell:
 659                         recordUndoInset(cur, Undo::ATOMIC);
 660                 else
 661                         recordUndo(cur, Undo::ATOMIC);
 662                 // if the inset can not be removed from within, delete it
 663                 if (!cur.backspace()) {
 664                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 665                         cur.innerText()->dispatch(cur, cmd);
 666                 }
 667                 break;
 668
 669         case LFUN_WORD_DELETE_FORWARD:
 670         case LFUN_CHAR_DELETE_FORWARD:
 671                 if (cur.pos() == cur.lastpos())
 672                         // May affect external cell:
 673                         recordUndoInset(cur, Undo::ATOMIC);
 674                 else
 675                         recordUndo(cur, Undo::ATOMIC);
 676                 // if the inset can not be removed from within, delete it
 677                 if (!cur.erase()) {
 678                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 679                         cur.innerText()->dispatch(cur, cmd);
 680                 }
 681                 break;
 682
 683         case LFUN_ESCAPE:
 684                 if (cur.selection())
 685                         cur.clearSelection();
 686                 else  {
 687                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 688                         cur.undispatched();
 689                 }
 690                 break;
 691
 692         case LFUN_INSET_TOGGLE:
 693                 recordUndo(cur);
 694                 lock(!lock());
 695                 cur.popRight();
 696                 break;
 697
 698         case LFUN_SELF_INSERT:
 699                 if (cmd.argument().size() != 1) {
 700                         recordUndo(cur);
 701                         docstring const arg = cmd.argument();
 702                         if (!interpretString(cur, arg))
 703                                 cur.insert(arg);
 704                         break;
 705                 }
 706                 // Don't record undo steps if we are in macro mode and
 707                 // cmd.argument is the next character of the macro name.
 708                 // Otherwise we'll get an invalid cursor if we undo after
 709                 // the macro was finished and the macro is a known command,
 710                 // e.g. sqrt. Cursor::macroModeClose replaces in this case
 711                 // the InsetMathUnknown with name "frac" by an empty
 712                 // InsetMathFrac -> a pos value > 0 is invalid.
 713                 // A side effect is that an undo before the macro is finished
 714                 // undoes the complete macro, not only the last character.
 715                 if (!cur.inMacroMode())
 716                         recordUndo(cur);
 717
 718                 // spacial handling of space. If we insert an inset
 719                 // via macro mode, we want to put the cursor inside it
 720                 // if relevant. Think typing "\frac<space>".
 721                 if (cmd.argument()[0] == ' '
 722                     && cur.inMacroMode() && cur.macroName() != "\\"
 723                     && cur.macroModeClose()) {
 724                         MathAtom const atom = cur.prevAtom();
 725                         if (atom->asNestInset() && atom->nargs() > 0) {
 726                                 cur.posLeft();
 727                                 cur.pushLeft(*cur.nextInset());
 728                         }
 729                 } else if (!interpretChar(cur, cmd.argument()[0])) {
 730                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 731                         cur.undispatched();
 732                 }
 733                 break;
 734
 735         //case LFUN_SERVER_GET_XY:
 736         //      sprintf(dispatch_buffer, "%d %d",);
 737         //      break;
 738
 739         case LFUN_SERVER_SET_XY: {
 740                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 741                 int x = 0;
 742                 int y = 0;
 743                 istringstream is(to_utf8(cmd.argument()));
 744                 is >> x >> y;
 745                 cur.setScreenPos(x, y);
 746                 break;
 747         }
 748
 749         // Special casing for superscript in case of LyX handling
 750         // dead-keys:
 751         case LFUN_ACCENT_CIRCUMFLEX:
 752                 if (cmd.argument().empty()) {
 753                         // do superscript if LyX handles
 754                         // deadkeys
 755                         recordUndo(cur, Undo::ATOMIC);
 756                         script(cur, true, grabAndEraseSelection(cur));
 757                 }
 758                 break;
 759
 760         case LFUN_ACCENT_UMLAUT:
 761         case LFUN_ACCENT_ACUTE:
 762         case LFUN_ACCENT_GRAVE:
 763         case LFUN_ACCENT_BREVE:
 764         case LFUN_ACCENT_DOT:
 765         case LFUN_ACCENT_MACRON:
 766         case LFUN_ACCENT_CARON:
 767         case LFUN_ACCENT_TILDE:
 768         case LFUN_ACCENT_CEDILLA:
 769         case LFUN_ACCENT_CIRCLE:
 770         case LFUN_ACCENT_UNDERDOT:
 771         case LFUN_ACCENT_TIE:
 772         case LFUN_ACCENT_OGONEK:
 773         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 774                 break;
 775
 776         //  Math fonts
 777         case LFUN_FONT_FREE_APPLY:
 778         case LFUN_FONT_FREE_UPDATE:
 779                 handleFont2(cur, cmd.argument());
 780                 break;
 781
 782         case LFUN_FONT_BOLD:
 783                 if (currentMode() == TEXT_MODE)
 784                         handleFont(cur, cmd.argument(), "textbf");
 785                 else
 786                         handleFont(cur, cmd.argument(), "mathbf");
 787                 break;
 788         case LFUN_FONT_SANS:
 789                 if (currentMode() == TEXT_MODE)
 790                         handleFont(cur, cmd.argument(), "textsf");
 791                 else
 792                         handleFont(cur, cmd.argument(), "mathsf");
 793                 break;
 794         case LFUN_FONT_EMPH:
 795                 if (currentMode() == TEXT_MODE)
 796                         handleFont(cur, cmd.argument(), "emph");
 797                 else
 798                         handleFont(cur, cmd.argument(), "mathcal");
 799                 break;
 800         case LFUN_FONT_ROMAN:
 801                 if (currentMode() == TEXT_MODE)
 802                         handleFont(cur, cmd.argument(), "textrm");
 803                 else
 804                         handleFont(cur, cmd.argument(), "mathrm");
 805                 break;
 806         case LFUN_FONT_CODE:
 807                 if (currentMode() == TEXT_MODE)
 808                         handleFont(cur, cmd.argument(), "texttt");
 809                 else
 810                         handleFont(cur, cmd.argument(), "mathtt");
 811                 break;
 812         case LFUN_FONT_FRAK:
 813                 handleFont(cur, cmd.argument(), "mathfrak");
 814                 break;
 815         case LFUN_FONT_ITAL:
 816                 if (currentMode() == TEXT_MODE)
 817                         handleFont(cur, cmd.argument(), "textit");
 818                 else
 819                         handleFont(cur, cmd.argument(), "mathit");
 820                 break;
 821         case LFUN_FONT_NOUN:
 822                 if (currentMode() == TEXT_MODE)
 823                         // FIXME: should be "noun"
 824                         handleFont(cur, cmd.argument(), "textsc");
 825                 else
 826                         handleFont(cur, cmd.argument(), "mathbb");
 827                 break;
 828         /*
 829         case LFUN_FONT_FREE_APPLY:
 830                 handleFont(cur, cmd.argument(), "textrm");
 831                 break;
 832         */
 833         case LFUN_FONT_DEFAULT:
 834                 handleFont(cur, cmd.argument(), "textnormal");
 835                 break;
 836
 837         case LFUN_MATH_MODE: {
 838 #if 1
 839                 // ignore math-mode on when already in math mode
 840                 if (currentMode() == Inset::MATH_MODE && cmd.argument() == "on")
 841                         break;
 842                 cur.macroModeClose();
 843                 docstring const save_selection = grabAndEraseSelection(cur);
 844                 selClearOrDel(cur);
 845                 //cur.plainInsert(MathAtom(new InsetMathMBox(cur.bv())));
 846                 cur.plainInsert(MathAtom(new InsetMathBox(from_ascii("mbox"))));
 847                 cur.posLeft();
 848                 cur.pushLeft(*cur.nextInset());
 849                 cur.niceInsert(save_selection);
 850 #else
 851                 if (currentMode() == Inset::TEXT_MODE) {
 852                         cur.niceInsert(MathAtom(new InsetMathHull("simple")));
 853                         cur.message(_("create new math text environment ($...$)"));
 854                 } else {
 855                         handleFont(cur, cmd.argument(), "textrm");
 856                         cur.message(_("entered math text mode (textrm)"));
 857                 }
 858 #endif
 859                 break;
 860         }
 861
 862         case LFUN_MATH_SIZE:
 863 #if 0
 864                 recordUndo(cur);
 865                 cur.setSize(arg);
 866 #endif
 867                 break;
 868
 869         case LFUN_MATH_MATRIX: {
 870                 recordUndo(cur, Undo::ATOMIC);
 871                 unsigned int m = 1;
 872                 unsigned int n = 1;
 873                 docstring v_align;
 874                 docstring h_align;
 875                 idocstringstream is(cmd.argument());
 876                 is >> m >> n >> v_align >> h_align;
 877                 if (m < 1)
 878                         m = 1;
 879                 if (n < 1)
 880                         n = 1;
 881                 v_align += 'c';
 882                 cur.niceInsert(
 883                         MathAtom(new InsetMathArray(from_ascii("array"), m, n, (char)v_align[0], h_align)));
 884                 break;
 885         }
 886
 887         case LFUN_MATH_DELIM: {
 888                 docstring ls;
 889                 docstring rs = support::split(cmd.argument(), ls, ' ');
 890                 // Reasonable default values
 891                 if (ls.empty())
 892                         ls = '(';
 893                 if (rs.empty())
 894                         rs = ')';
 895                 recordUndo(cur, Undo::ATOMIC);
 896                 cur.handleNest(MathAtom(new InsetMathDelim(ls, rs)));
 897                 break;
 898         }
 899
 900         case LFUN_MATH_BIGDELIM: {
 901                 docstring const lname  = from_utf8(cmd.getArg(0));
 902                 docstring const ldelim = from_utf8(cmd.getArg(1));
 903                 docstring const rname  = from_utf8(cmd.getArg(2));
 904                 docstring const rdelim = from_utf8(cmd.getArg(3));
 905                 latexkeys const * l = in_word_set(lname);
 906                 bool const have_l = l && l->inset == "big" &&
 907                                     InsetMathBig::isBigInsetDelim(ldelim);
 908                 l = in_word_set(rname);
 909                 bool const have_r = l && l->inset == "big" &&
 910                                     InsetMathBig::isBigInsetDelim(rdelim);
 911                 // We mimic LFUN_MATH_DELIM in case we have an empty left
 912                 // or right delimiter.
 913                 if (have_l || have_r) {
 914                         recordUndo(cur, Undo::ATOMIC);
 915                         docstring const selection = grabAndEraseSelection(cur);
 916                         selClearOrDel(cur);
 917                         if (have_l)
 918                                 cur.insert(MathAtom(new InsetMathBig(lname,
 919                                                                 ldelim)));
 920                         cur.niceInsert(selection);
 921                         if (have_r)
 922                                 cur.insert(MathAtom(new InsetMathBig(rname,
 923                                                                 rdelim)));
 924                 }
 925                 // Don't call cur.undispatched() if we did nothing, this would
 926                 // lead to infinite recursion via Text::dispatch().
 927                 break;
 928         }
 929
 930         case LFUN_SPACE_INSERT:
 931         case LFUN_MATH_SPACE:
 932                 recordUndo(cur, Undo::ATOMIC);
 933                 cur.insert(MathAtom(new InsetMathSpace(from_ascii(","))));
 934                 break;
 935
 936         case LFUN_ERT_INSERT:
 937                 // interpret this as if a backslash was typed
 938                 recordUndo(cur, Undo::ATOMIC);
 939                 interpretChar(cur, '\\');
 940                 break;
 941
 942         case LFUN_MATH_SUBSCRIPT:
 943                 // interpret this as if a _ was typed
 944                 recordUndo(cur, Undo::ATOMIC);
 945                 interpretChar(cur, '_');
 946                 break;
 947
 948         case LFUN_MATH_SUPERSCRIPT:
 949                 // interpret this as if a ^ was typed
 950                 recordUndo(cur, Undo::ATOMIC);
 951                 interpretChar(cur, '^');
 952                 break;
 953
 954         case LFUN_QUOTE_INSERT:
 955                 // interpret this as if a straight " was typed
 956                 recordUndo(cur, Undo::ATOMIC);
 957                 interpretChar(cur, '\"');
 958                 break;
 959
 960 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
 961 // handling such that "self-insert" works on "arbitrary stuff" too, and
 962 // math-insert only handles special math things like "matrix".
 963         case LFUN_MATH_INSERT: {
 964                 recordUndo(cur, Undo::ATOMIC);
 965                 if (cmd.argument() == "^" || cmd.argument() == "_") {
 966                         interpretChar(cur, cmd.argument()[0]);
 967                 } else
 968                         cur.niceInsert(cmd.argument());
 969                 break;
 970                 }
 971
 972         case LFUN_DIALOG_SHOW_NEW_INSET: {
 973                 docstring const & name = cmd.argument();
 974                 string data;
 975                 if (name == "ref") {
 976                         InsetMathRef tmp(name);
 977                         data = tmp.createDialogStr(to_utf8(name));
 978                 }
 979                 cur.bv().showInsetDialog(to_utf8(name), data, 0);
 980                 break;
 981         }
 982
 983         case LFUN_INSET_INSERT: {
 984                 MathData ar;
 985                 if (createInsetMath_fromDialogStr(cmd.argument(), ar)) {
 986                         recordUndo(cur);
 987                         cur.insert(ar);
 988                 } else
 989                         cur.undispatched();
 990                 break;
 991         }
 992
 993         default:
 994                 InsetMath::doDispatch(cur, cmd);
 995                 break;
 996         }
 997 }
 998
 999
1000 bool InsetMathNest::getStatus(Cursor & cur, FuncRequest const & cmd,
1001                 FuncStatus & flag) const
1002 {
1003         // the font related toggles
1004         //string tc = "mathnormal";
1005         bool ret = true;
1006         string const arg = to_utf8(cmd.argument());
1007         switch (cmd.action) {
1008         case LFUN_TABULAR_FEATURE:
1009                 flag.enabled(false);
1010                 break;
1011 #if 0
1012         case LFUN_TABULAR_FEATURE:
1013                 // FIXME: check temporarily disabled
1014                 // valign code
1015                 char align = mathcursor::valign();
1016                 if (align == '\0') {
1017                         enable = false;
1018                         break;
1019                 }
1020                 if (cmd.argument().empty()) {
1021                         flag.clear();
1022                         break;
1023                 }
1024                 if (!contains("tcb", cmd.argument()[0])) {
1025                         enable = false;
1026                         break;
1027                 }
1028                 flag.setOnOff(cmd.argument()[0] == align);
1029                 break;
1030 #endif
1031         /// We have to handle them since 1.4 blocks all unhandled actions
1032         case LFUN_FONT_ITAL:
1033         case LFUN_FONT_BOLD:
1034         case LFUN_FONT_SANS:
1035         case LFUN_FONT_EMPH:
1036         case LFUN_FONT_CODE:
1037         case LFUN_FONT_NOUN:
1038         case LFUN_FONT_ROMAN:
1039         case LFUN_FONT_DEFAULT:
1040                 flag.enabled(true);
1041                 break;
1042         case LFUN_MATH_MUTATE:
1043                 //flag.setOnOff(mathcursor::formula()->hullType() == to_utf8(cmd.argument()));
1044                 flag.setOnOff(false);
1045                 break;
1046
1047         // we just need to be in math mode to enable that
1048         case LFUN_MATH_SIZE:
1049         case LFUN_MATH_SPACE:
1050         case LFUN_MATH_LIMITS:
1051         case LFUN_MATH_NONUMBER:
1052         case LFUN_MATH_NUMBER:
1053         case LFUN_MATH_EXTERN:
1054                 flag.enabled(true);
1055                 break;
1056
1057         case LFUN_FONT_FRAK:
1058                 flag.enabled(currentMode() != TEXT_MODE);
1059                 break;
1060
1061         case LFUN_MATH_INSERT: {
1062                 bool const textarg =
1063                         arg == "\\textbf"   || arg == "\\textsf" ||
1064                         arg == "\\textrm"   || arg == "\\textmd" ||
1065                         arg == "\\textit"   || arg == "\\textsc" ||
1066                         arg == "\\textsl"   || arg == "\\textup" ||
1067                         arg == "\\texttt"   || arg == "\\textbb" ||
1068                         arg == "\\textnormal";
1069                 flag.enabled(currentMode() != TEXT_MODE || textarg);
1070                 break;
1071         }
1072
1073         case LFUN_MATH_MATRIX:
1074                 flag.enabled(currentMode() == MATH_MODE);
1075                 break;
1076
1077         case LFUN_INSET_INSERT: {
1078                 // Don't test createMathInset_fromDialogStr(), since
1079                 // getStatus is not called with a valid reference and the
1080                 // dialog would not be applyable.
1081                 string const name = cmd.getArg(0);
1082                 flag.enabled(name == "ref");
1083                 break;
1084         }
1085
1086         case LFUN_MATH_DELIM:
1087         case LFUN_MATH_BIGDELIM:
1088                 // Don't do this with multi-cell selections
1089                 flag.enabled(cur.selBegin().idx() == cur.selEnd().idx());
1090                 break;
1091
1092         case LFUN_HYPHENATION_POINT_INSERT:
1093         case LFUN_LIGATURE_BREAK_INSERT:
1094         case LFUN_MENU_SEPARATOR_INSERT:
1095         case LFUN_DOTS_INSERT:
1096         case LFUN_END_OF_SENTENCE_PERIOD_INSERT:
1097                 // FIXME: These would probably make sense in math-text mode
1098                 flag.enabled(false);
1099                 break;
1100
1101         default:
1102                 ret = false;
1103                 break;
1104         }
1105         return ret;
1106 }
1107
1108
1109 void InsetMathNest::edit(Cursor & cur, bool left)
1110 {
1111         cur.push(*this);
1112         cur.idx() = left ? 0 : cur.lastidx();
1113         cur.pos() = left ? 0 : cur.lastpos();
1114         cur.resetAnchor();
1115         //lyxerr << "InsetMathNest::edit, cur:\n" << cur << endl;
1116 }
1117
1118
1119 Inset * InsetMathNest::editXY(Cursor & cur, int x, int y)
1120 {
1121         int idx_min = 0;
1122         int dist_min = 1000000;
1123         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1124                 int const d = cell(i).dist(cur.bv(), x, y);
1125                 if (d < dist_min) {
1126                         dist_min = d;
1127                         idx_min = i;
1128                 }
1129         }
1130         MathData & ar = cell(idx_min);
1131         cur.push(*this);
1132         cur.idx() = idx_min;
1133         cur.pos() = ar.x2pos(x - ar.xo(cur.bv()));
1134
1135         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1136         if (dist_min == 0) {
1137                 // hit inside cell
1138                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1139                         if (ar[i]->covers(cur.bv(), x, y))
1140                                 return ar[i].nucleus()->editXY(cur, x, y);
1141         }
1142         return this;
1143 }
1144
1145
1146 void InsetMathNest::lfunMousePress(Cursor & cur, FuncRequest & cmd)
1147 {
1148         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1149         BufferView & bv = cur.bv();
1150         if (cmd.button() == mouse_button::button1) {
1151                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1152                 bv.mouseSetCursor(cur);
1153                 // Update the cursor update flags as needed:
1154                 //
1155                 // Update::Decoration: tells to update the decoration (visual box
1156                 //                     corners that define the inset)/
1157                 // Update::FitCursor: adjust the screen to the cursor position if
1158                 //                    needed
1159                 // cur.result().update(): don't overwrite previously set flags.
1160                 cur.updateFlags(Update::Decoration | Update::FitCursor | cur.result().update());
1161         } else if (cmd.button() == mouse_button::button2) {
1162                 MathData ar;
1163                 if (cap::selection()) {
1164                         // See comment in Text::dispatch why we do this
1165                         cap::copySelectionToStack();
1166                         cmd = FuncRequest(LFUN_PASTE, "0");
1167                         doDispatch(cur, cmd);
1168                 } else
1169                         asArray(theSelection().get(), ar);
1170
1171                 cur.insert(ar);
1172                 bv.mouseSetCursor(cur);
1173         }
1174 }
1175
1176
1177 void InsetMathNest::lfunMouseMotion(Cursor & cur, FuncRequest & cmd)
1178 {
1179         // only select with button 1
1180         if (cmd.button() == mouse_button::button1) {
1181                 Cursor & bvcur = cur.bv().cursor();
1182                 if (bvcur.anchor_.hasPart(cur)) {
1183                         //lyxerr << "## lfunMouseMotion: cursor: " << cur << endl;
1184                         bvcur.setCursor(cur);
1185                         bvcur.selection() = true;
1186                         //lyxerr << "MOTION " << bvcur << endl;
1187                 } else
1188                         cur.undispatched();
1189         }
1190 }
1191
1192
1193 void InsetMathNest::lfunMouseRelease(Cursor & cur, FuncRequest & cmd)
1194 {
1195         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1196
1197         if (cmd.button() == mouse_button::button1) {
1198                 if (!cur.selection())
1199                         cur.noUpdate();
1200                 else {
1201                         Cursor & bvcur = cur.bv().cursor();
1202                         bvcur.selection() = true;
1203                         cap::saveSelection(bvcur);
1204                 }
1205                 return;
1206         }
1207
1208         cur.undispatched();
1209 }
1210
1211
1212 bool InsetMathNest::interpretChar(Cursor & cur, char_type c)
1213 {
1214         //lyxerr << "interpret 2: '" << c << "'" << endl;
1215         docstring save_selection;
1216         if (c == '^' || c == '_')
1217                 save_selection = grabAndEraseSelection(cur);
1218
1219         cur.clearTargetX();
1220
1221         // handle macroMode
1222         if (cur.inMacroMode()) {
1223                 docstring name = cur.macroName();
1224
1225                 /// are we currently typing '#1' or '#2' or...?
1226                 if (name == "\\#") {
1227                         cur.backspace();
1228                         int n = c - '0';
1229                         if (n >= 1 && n <= 9)
1230                                 cur.insert(new MathMacroArgument(n));
1231                         return true;
1232                 }
1233
1234                 if (isAlphaASCII(c)) {
1235                         cur.activeMacro()->setName(name + docstring(1, c));
1236                         return true;
1237                 }
1238
1239                 // handle 'special char' macros
1240                 if (name == "\\") {
1241                         // remove the '\\'
1242                         if (c == '\\') {
1243                                 cur.backspace();
1244                                 if (currentMode() == InsetMath::TEXT_MODE)
1245                                         cur.niceInsert(createInsetMath("textbackslash"));
1246                                 else
1247                                         cur.niceInsert(createInsetMath("backslash"));
1248                         } else if (c == '{') {
1249                                 cur.backspace();
1250                                 cur.niceInsert(MathAtom(new InsetMathBrace));
1251                         } else if (c == '%') {
1252                                 cur.backspace();
1253                                 cur.niceInsert(MathAtom(new InsetMathComment));
1254                         } else if (c == '#') {
1255                                 BOOST_ASSERT(cur.activeMacro());
1256                                 cur.activeMacro()->setName(name + docstring(1, c));
1257                         } else {
1258                                 cur.backspace();
1259                                 cur.niceInsert(createInsetMath(docstring(1, c)));
1260                         }
1261                         return true;
1262                 }
1263
1264                 // One character big delimiters. The others are handled in
1265                 // interpretString().
1266                 latexkeys const * l = in_word_set(name.substr(1));
1267                 if (name[0] == '\\' && l && l->inset == "big") {
1268                         docstring delim;
1269                         switch (c) {
1270                         case '{':
1271                                 delim = from_ascii("\\{");
1272                                 break;
1273                         case '}':
1274                                 delim = from_ascii("\\}");
1275                                 break;
1276                         default:
1277                                 delim = docstring(1, c);
1278                                 break;
1279                         }
1280                         if (InsetMathBig::isBigInsetDelim(delim)) {
1281                                 // name + delim ared a valid InsetMathBig.
1282                                 // We can't use cur.macroModeClose() because
1283                                 // it does not handle delim.
1284                                 InsetMathUnknown * p = cur.activeMacro();
1285                                 p->finalize();
1286                                 --cur.pos();
1287                                 cur.cell().erase(cur.pos());
1288                                 cur.plainInsert(MathAtom(
1289                                         new InsetMathBig(name.substr(1), delim)));
1290                                 return true;
1291                         }
1292                 }
1293
1294                 // leave macro mode and try again if necessary
1295                 cur.macroModeClose();
1296                 if (c == '{')
1297                         cur.niceInsert(MathAtom(new InsetMathBrace));
1298                 else if (c != ' ')
1299                         interpretChar(cur, c);
1300                 return true;
1301         }
1302
1303         // This is annoying as one has to press <space> far too often.
1304         // Disable it.
1305
1306 #if 0
1307                 // leave autocorrect mode if necessary
1308                 if (autocorrect() && c == ' ') {
1309                         autocorrect() = false;
1310                         return true;
1311                 }
1312 #endif
1313
1314         // just clear selection on pressing the space bar
1315         if (cur.selection() && c == ' ') {
1316                 cur.selection() = false;
1317                 return true;
1318         }
1319
1320         selClearOrDel(cur);
1321
1322         if (c == '\\') {
1323                 //lyxerr << "starting with macro" << endl;
1324                 cur.insert(MathAtom(new InsetMathUnknown(from_ascii("\\"), false)));
1325                 return true;
1326         }
1327
1328         if (c == '\n') {
1329                 if (currentMode() == InsetMath::TEXT_MODE)
1330                         cur.insert(c);
1331                 return true;
1332         }
1333
1334         if (c == ' ') {
1335                 if (currentMode() == InsetMath::TEXT_MODE) {
1336                         // insert spaces in text mode,
1337                         // but suppress direct insertion of two spaces in a row
1338                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1339                         // it is better than nothing...
1340                         if (!cur.pos() != 0 || cur.prevAtom()->getChar() != ' ') {
1341                                 cur.insert(c);
1342                                 // FIXME: we have to enable full redraw here because of the
1343                                 // visual box corners that define the inset. If we know for
1344                                 // sure that we stay within the same cell we can optimize for
1345                                 // that using:
1346                                 //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1347                         }
1348                         return true;
1349                 }
1350                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1351                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1352                         // FIXME: we have to enable full redraw here because of the
1353                         // visual box corners that define the inset. If we know for
1354                         // sure that we stay within the same cell we can optimize for
1355                         // that using:
1356                         //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1357                         return true;
1358                 }
1359
1360                 if (cur.popRight()) {
1361                         // FIXME: we have to enable full redraw here because of the
1362                         // visual box corners that define the inset. If we know for
1363                         // sure that we stay within the same cell we can optimize for
1364                         // that using:
1365                         //cur.updateFlags(Update::FitCursor);
1366                         return true;
1367                 }
1368
1369                 // if we are at the very end, leave the formula
1370                 return cur.pos() != cur.lastpos();
1371         }
1372
1373         // These shouldn't work in text mode:
1374         if (currentMode() != InsetMath::TEXT_MODE) {
1375                 if (c == '_') {
1376                         script(cur, false, save_selection);
1377                         return true;
1378                 }
1379                 if (c == '^') {
1380                         script(cur, true, save_selection);
1381                         return true;
1382                 }
1383                 if (c == '~') {
1384                         cur.niceInsert(createInsetMath("sim"));
1385                         return true;
1386                 }
1387         }
1388
1389         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1390             c == '%' || c == '_' || c == '^') {
1391                 cur.niceInsert(createInsetMath(docstring(1, c)));
1392                 return true;
1393         }
1394
1395
1396         // try auto-correction
1397         //if (autocorrect() && hasPrevAtom() && math_autocorrect(prevAtom(), c))
1398         //      return true;
1399
1400         // no special circumstances, so insert the character without any fuss
1401         cur.insert(c);
1402         cur.autocorrect() = true;
1403         return true;
1404 }
1405
1406
1407 bool InsetMathNest::interpretString(Cursor & cur, docstring const & str)
1408 {
1409         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1410         // possible
1411         if (!cur.empty() && cur.pos() > 0 &&
1412             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1413                 if (InsetMathBig::isBigInsetDelim(str)) {
1414                         docstring prev = asString(cur.cell()[cur.pos() - 1]);
1415                         if (prev[0] == '\\') {
1416                                 prev = prev.substr(1);
1417                                 latexkeys const * l = in_word_set(prev);
1418                                 if (l && l->inset == "big") {
1419                                         cur.cell()[cur.pos() - 1] =
1420                                                 MathAtom(new InsetMathBig(prev, str));
1421                                         return true;
1422                                 }
1423                         }
1424                 }
1425         }
1426         return false;
1427 }
1428
1429
1430 bool InsetMathNest::script(Cursor & cur, bool up,
1431                 docstring const & save_selection)
1432 {
1433         // Hack to get \^ and \_ working
1434         //lyxerr << "handling script: up: " << up << endl;
1435         if (cur.inMacroMode() && cur.macroName() == "\\") {
1436                 if (up)
1437                         cur.niceInsert(createInsetMath("mathcircumflex"));
1438                 else
1439                         interpretChar(cur, '_');
1440                 return true;
1441         }
1442
1443         cur.macroModeClose();
1444         if (asScriptInset() && cur.idx() == 0) {
1445                 // we are in a nucleus of a script inset, move to _our_ script
1446                 InsetMathScript * inset = asScriptInset();
1447                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1448                 inset->ensure(up);
1449                 cur.idx() = inset->idxOfScript(up);
1450                 cur.pos() = 0;
1451         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1452                 --cur.pos();
1453                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1454                 cur.push(*inset);
1455                 inset->ensure(up);
1456                 cur.idx() = inset->idxOfScript(up);
1457                 cur.pos() = cur.lastpos();
1458         } else {
1459                 // convert the thing to our left to a scriptinset or create a new
1460                 // one if in the very first position of the array
1461                 if (cur.pos() == 0) {
1462                         //lyxerr << "new scriptinset" << endl;
1463                         cur.insert(new InsetMathScript(up));
1464                 } else {
1465                         //lyxerr << "converting prev atom " << endl;
1466                         cur.prevAtom() = MathAtom(new InsetMathScript(cur.prevAtom(), up));
1467                 }
1468                 --cur.pos();
1469                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1470                 // See comment in MathParser.cpp for special handling of {}-bases
1471
1472                 cur.push(*inset);
1473                 cur.idx() = 1;
1474                 cur.pos() = 0;
1475         }
1476         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1477         cur.niceInsert(save_selection);
1478         cur.resetAnchor();
1479         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1480         return true;
1481 }
1482
1483
1484 } // namespace lyx