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 "Bidi.h"
  37 #include "bufferview_funcs.h"
  38 #include "BufferView.h"
  39 #include "Color.h"
  40 #include "CoordCache.h"
  41 #include "Cursor.h"
  42 #include "CutAndPaste.h"
  43 #include "debug.h"
  44 #include "DispatchResult.h"
  45 #include "FuncRequest.h"
  46 #include "FuncStatus.h"
  47 #include "gettext.h"
  48 #include "Text.h"
  49 #include "OutputParams.h"
  50 #include "Undo.h"
  51
  52 #include "support/lstrings.h"
  53 #include "support/textutils.h"
  54
  55 #include "frontends/Clipboard.h"
  56 #include "frontends/Painter.h"
  57 #include "frontends/Selection.h"
  58
  59 #include "FuncRequest.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), mouse_hover_(false)
  79 {}
  80
  81
  82 InsetMathNest::InsetMathNest(InsetMathNest const & inset)
  83         : InsetMath(inset), cells_(inset.cells_), lock_(inset.lock_),
  84           mouse_hover_(false)
  85 {}
  86
  87
  88 InsetMathNest & InsetMathNest::operator=(InsetMathNest const & inset)
  89 {
  90         cells_ = inset.cells_;
  91         lock_ = inset.lock_;
  92         mouse_hover_ = false;
  93         InsetMath::operator=(inset);
  94         return *this;
  95 }
  96
  97
  98 InsetMath::idx_type InsetMathNest::nargs() const
  99 {
 100         return cells_.size();
 101 }
 102
 103
 104 void InsetMathNest::cursorPos(BufferView const & bv,
 105                 CursorSlice const & sl, bool /*boundary*/,
 106                 int & x, int & y) const
 107 {
 108 // FIXME: This is a hack. Ideally, the coord cache should not store
 109 // absolute positions, but relative ones. This would mean to call
 110 // setXY() not in MathData::draw(), but in the parent insets' draw()
 111 // with the correctly adjusted x,y values. But this means that we'd have
 112 // to touch all (math)inset's draw() methods. Right now, we'll store
 113 // absolute value, and make them here relative, only to make them
 114 // absolute again when actually drawing the cursor. What a mess.
 115         BOOST_ASSERT(ptr_cmp(&sl.inset(), this));
 116         MathData const & ar = sl.cell();
 117         CoordCache const & coord_cache = bv.coordCache();
 118         if (!coord_cache.getArrays().has(&ar)) {
 119                 // this can (semi-)legally happen if we just created this cell
 120                 // and it never has been drawn before. So don't ASSERT.
 121                 //lyxerr << "no cached data for array " << &ar << endl;
 122                 x = 0;
 123                 y = 0;
 124                 return;
 125         }
 126         Point const pt = coord_cache.getArrays().xy(&ar);
 127         if (!coord_cache.getInsets().has(this)) {
 128                 // same as above
 129                 //lyxerr << "no cached data for inset " << this << endl;
 130                 x = 0;
 131                 y = 0;
 132                 return;
 133         }
 134         Point const pt2 = coord_cache.getInsets().xy(this);
 135         //lyxerr << "retrieving position cache for MathData "
 136         //      << pt.x_ << ' ' << pt.y_ << std::endl;
 137         x = pt.x_ - pt2.x_ + ar.pos2x(sl.pos());
 138         y = pt.y_ - pt2.y_;
 139 //      lyxerr << "pt.y_ : " << pt.y_ << " pt2_.y_ : " << pt2.y_
 140 //              << " asc: " << ascent() << "  des: " << descent()
 141 //              << " ar.asc: " << ar.ascent() << " ar.des: " << ar.descent() << endl;
 142         // move cursor visually into empty cells ("blue rectangles");
 143         if (ar.empty())
 144                 x += 2;
 145 }
 146
 147
 148 void InsetMathNest::metrics(MetricsInfo const & mi) const
 149 {
 150         MetricsInfo m = mi;
 151         for (idx_type i = 0, n = nargs(); i != n; ++i) {
 152                 Dimension dim;
 153                 cell(i).metrics(m, dim);
 154         }
 155 }
 156
 157
 158 bool InsetMathNest::idxNext(Cursor & cur) const
 159 {
 160         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 161         if (cur.idx() == cur.lastidx())
 162                 return false;
 163         ++cur.idx();
 164         cur.pos() = 0;
 165         return true;
 166 }
 167
 168
 169 bool InsetMathNest::idxRight(Cursor & cur) const
 170 {
 171         return idxNext(cur);
 172 }
 173
 174
 175 bool InsetMathNest::idxPrev(Cursor & cur) const
 176 {
 177         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 178         if (cur.idx() == 0)
 179                 return false;
 180         --cur.idx();
 181         cur.pos() = cur.lastpos();
 182         return true;
 183 }
 184
 185
 186 bool InsetMathNest::idxLeft(Cursor & cur) const
 187 {
 188         return idxPrev(cur);
 189 }
 190
 191
 192 bool InsetMathNest::idxFirst(Cursor & cur) const
 193 {
 194         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 195         if (nargs() == 0)
 196                 return false;
 197         cur.idx() = 0;
 198         cur.pos() = 0;
 199         return true;
 200 }
 201
 202
 203 bool InsetMathNest::idxLast(Cursor & cur) const
 204 {
 205         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 206         if (nargs() == 0)
 207                 return false;
 208         cur.idx() = cur.lastidx();
 209         cur.pos() = cur.lastpos();
 210         return true;
 211 }
 212
 213
 214 void InsetMathNest::dump() const
 215 {
 216         odocstringstream oss;
 217         WriteStream os(oss);
 218         os << "---------------------------------------------\n";
 219         write(os);
 220         os << "\n";
 221         for (idx_type i = 0, n = nargs(); i != n; ++i)
 222                 os << cell(i) << "\n";
 223         os << "---------------------------------------------\n";
 224         lyxerr << to_utf8(oss.str());
 225 }
 226
 227
 228 void InsetMathNest::draw(PainterInfo & pi, int x, int y) const
 229 {
 230 #if 0
 231         if (lock_)
 232                 pi.pain.fillRectangle(x, y - ascent(), width(), height(),
 233                                         Color::mathlockbg);
 234 #endif
 235         setPosCache(pi, x, y);
 236 }
 237
 238
 239 void InsetMathNest::drawSelection(PainterInfo & pi, int x, int y) const
 240 {
 241         BufferView & bv = *pi.base.bv;
 242         // this should use the x/y values given, not the cached values
 243         Cursor & cur = bv.cursor();
 244         if (!cur.selection())
 245                 return;
 246         if (!ptr_cmp(&cur.inset(), this))
 247                 return;
 248
 249         // FIXME: hack to get position cache warm
 250         pi.pain.setDrawingEnabled(false);
 251         draw(pi, x, y);
 252         pi.pain.setDrawingEnabled(true);
 253
 254         CursorSlice s1 = cur.selBegin();
 255         CursorSlice s2 = cur.selEnd();
 256
 257         //lyxerr << "InsetMathNest::drawing selection: "
 258         //      << " s1: " << s1 << " s2: " << s2 << endl;
 259         if (s1.idx() == s2.idx()) {
 260                 MathData const & c = cell(s1.idx());
 261                 Geometry const & g = bv.coordCache().getArrays().geometry(&c);
 262                 int x1 = g.pos.x_ + c.pos2x(s1.pos());
 263                 int y1 = g.pos.y_ - g.dim.ascent();
 264                 int x2 = g.pos.x_ + c.pos2x(s2.pos());
 265                 int y2 = g.pos.y_ + g.dim.descent();
 266                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, Color::selection);
 267         //lyxerr << "InsetMathNest::drawing selection 3: "
 268         //      << " x1: " << x1 << " x2: " << x2
 269         //      << " y1: " << y1 << " y2: " << y2 << endl;
 270         } else {
 271                 for (idx_type i = 0; i < nargs(); ++i) {
 272                         if (idxBetween(i, s1.idx(), s2.idx())) {
 273                                 MathData const & c = cell(i);
 274                                 Geometry const & g = bv.coordCache().getArrays().geometry(&c);
 275                                 int x1 = g.pos.x_;
 276                                 int y1 = g.pos.y_ - g.dim.ascent();
 277                                 int x2 = g.pos.x_ + g.dim.width();
 278                                 int y2 = g.pos.y_ + g.dim.descent();
 279                                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, Color::selection);
 280                         }
 281                 }
 282         }
 283 }
 284
 285
 286 void InsetMathNest::validate(LaTeXFeatures & features) const
 287 {
 288         for (idx_type i = 0; i < nargs(); ++i)
 289                 cell(i).validate(features);
 290 }
 291
 292
 293 void InsetMathNest::replace(ReplaceData & rep)
 294 {
 295         for (idx_type i = 0; i < nargs(); ++i)
 296                 cell(i).replace(rep);
 297 }
 298
 299
 300 bool InsetMathNest::contains(MathData const & ar) const
 301 {
 302         for (idx_type i = 0; i < nargs(); ++i)
 303                 if (cell(i).contains(ar))
 304                         return true;
 305         return false;
 306 }
 307
 308
 309 bool InsetMathNest::lock() const
 310 {
 311         return lock_;
 312 }
 313
 314
 315 void InsetMathNest::lock(bool l)
 316 {
 317         lock_ = l;
 318 }
 319
 320
 321 bool InsetMathNest::isActive() const
 322 {
 323         return nargs() > 0;
 324 }
 325
 326
 327 MathData InsetMathNest::glue() const
 328 {
 329         MathData ar;
 330         for (size_t i = 0; i < nargs(); ++i)
 331                 ar.append(cell(i));
 332         return ar;
 333 }
 334
 335
 336 void InsetMathNest::write(WriteStream & os) const
 337 {
 338         os << '\\' << name().c_str();
 339         for (size_t i = 0; i < nargs(); ++i)
 340                 os << '{' << cell(i) << '}';
 341         if (nargs() == 0)
 342                 os.pendingSpace(true);
 343         if (lock_ && !os.latex()) {
 344                 os << "\\lyxlock";
 345                 os.pendingSpace(true);
 346         }
 347 }
 348
 349
 350 void InsetMathNest::normalize(NormalStream & os) const
 351 {
 352         os << '[' << name().c_str();
 353         for (size_t i = 0; i < nargs(); ++i)
 354                 os << ' ' << cell(i);
 355         os << ']';
 356 }
 357
 358
 359 int InsetMathNest::latex(Buffer const &, odocstream & os,
 360                         OutputParams const & runparams) const
 361 {
 362         WriteStream wi(os, runparams.moving_arg, true);
 363         write(wi);
 364         return wi.line();
 365 }
 366
 367
 368 bool InsetMathNest::setMouseHover(bool mouse_hover)
 369 {
 370         mouse_hover_ = mouse_hover;
 371         return true;
 372 }
 373
 374
 375 bool InsetMathNest::notifyCursorLeaves(Cursor & /*cur*/)
 376 {
 377         // FIXME: look here
 378 #if 0
 379         MathData & ar = cur.cell();
 380         // remove base-only "scripts"
 381         for (pos_type i = 0; i + 1 < ar.size(); ++i) {
 382                 InsetMathScript * p = operator[](i).nucleus()->asScriptInset();
 383                 if (p && p->nargs() == 1) {
 384                         MathData ar = p->nuc();
 385                         erase(i);
 386                         insert(i, ar);
 387                         cur.adjust(i, ar.size() - 1);
 388                 }
 389         }
 390
 391         // glue adjacent font insets of the same kind
 392         for (pos_type i = 0; i + 1 < size(); ++i) {
 393                 InsetMathFont * p = operator[](i).nucleus()->asFontInset();
 394                 InsetMathFont const * q = operator[](i + 1)->asFontInset();
 395                 if (p && q && p->name() == q->name()) {
 396                         p->cell(0).append(q->cell(0));
 397                         erase(i + 1);
 398                         cur.adjust(i, -1);
 399                 }
 400         }
 401 #endif
 402         return false;
 403 }
 404
 405
 406 void InsetMathNest::handleFont
 407         (Cursor & cur, docstring const & arg, char const * const font)
 408 {
 409         handleFont(cur, arg, from_ascii(font));
 410 }
 411
 412
 413 void InsetMathNest::handleFont
 414         (Cursor & cur, docstring const & arg, docstring const & font)
 415 {
 416         // this whole function is a hack and won't work for incremental font
 417         // changes...
 418
 419         if (cur.inset().asInsetMath()->name() == font) {
 420                 recordUndoInset(cur, Undo::ATOMIC);
 421                 cur.handleFont(to_utf8(font));
 422         } else {
 423                 recordUndo(cur, Undo::ATOMIC);
 424                 cur.handleNest(createInsetMath(font));
 425                 cur.insert(arg);
 426         }
 427 }
 428
 429
 430 void InsetMathNest::handleFont2(Cursor & cur, docstring const & arg)
 431 {
 432         recordUndo(cur, Undo::ATOMIC);
 433         Font font;
 434         bool b;
 435         bv_funcs::string2font(to_utf8(arg), font, b);
 436         if (font.color() != Color::inherit) {
 437                 MathAtom at = MathAtom(new InsetMathColor(true, font.color()));
 438                 cur.handleNest(at, 0);
 439         }
 440 }
 441
 442
 443 void InsetMathNest::doDispatch(Cursor & cur, FuncRequest & cmd)
 444 {
 445         //lyxerr << "InsetMathNest: request: " << cmd << std::endl;
 446         //CursorSlice sl = cur.current();
 447
 448         switch (cmd.action) {
 449
 450         case LFUN_PASTE: {
 451                 recordUndo(cur);
 452                 cur.message(_("Paste"));
 453                 replaceSelection(cur);
 454                 docstring topaste;
 455                 if (cmd.argument().empty() && !theClipboard().isInternal())
 456                         topaste = theClipboard().getAsText();
 457                 else {
 458                         size_t n = 0;
 459                         idocstringstream is(cmd.argument());
 460                         is >> n;
 461                         topaste = cap::getSelection(cur.buffer(), n);
 462                 }
 463                 cur.niceInsert(topaste);
 464                 cur.clearSelection(); // bug 393
 465                 finishUndo();
 466                 break;
 467         }
 468
 469         case LFUN_CUT:
 470                 recordUndo(cur);
 471                 cutSelection(cur, true, true);
 472                 cur.message(_("Cut"));
 473                 // Prevent stale position >= size crash
 474                 // Probably not necessary anymore, see eraseSelection (gb 2005-10-09)
 475                 cur.normalize();
 476                 break;
 477
 478         case LFUN_COPY:
 479                 copySelection(cur);
 480                 cur.message(_("Copy"));
 481                 break;
 482
 483         case LFUN_MOUSE_PRESS:
 484                 lfunMousePress(cur, cmd);
 485                 break;
 486
 487         case LFUN_MOUSE_MOTION:
 488                 lfunMouseMotion(cur, cmd);
 489                 break;
 490
 491         case LFUN_MOUSE_RELEASE:
 492                 lfunMouseRelease(cur, cmd);
 493                 break;
 494
 495         case LFUN_FINISHED_LEFT:
 496                 cur.bv().cursor() = cur;
 497                 break;
 498
 499         case LFUN_FINISHED_RIGHT:
 500                 ++cur.pos();
 501                 cur.bv().cursor() = cur;
 502                 break;
 503
 504         case LFUN_CHAR_FORWARD:
 505                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 506         case LFUN_CHAR_FORWARD_SELECT:
 507                 cur.selHandle(cmd.action == LFUN_CHAR_FORWARD_SELECT);
 508                 cur.autocorrect() = false;
 509                 cur.clearTargetX();
 510                 cur.macroModeClose();
 511                 if (reverseDirectionNeeded(cur))
 512                         goto goto_char_backwards;
 513
 514 goto_char_forwards:
 515                 if (cur.pos() != cur.lastpos() && cur.openable(cur.nextAtom())) {
 516                         cur.pushLeft(*cur.nextAtom().nucleus());
 517                         cur.inset().idxFirst(cur);
 518                 } else if (cur.posRight() || idxRight(cur)
 519                         || cur.popRight() || cur.selection())
 520                         ;
 521                 else {
 522                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 523                         cur.undispatched();
 524                 }
 525                 break;
 526
 527         case LFUN_CHAR_BACKWARD:
 528                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 529         case LFUN_CHAR_BACKWARD_SELECT:
 530                 cur.selHandle(cmd.action == LFUN_CHAR_BACKWARD_SELECT);
 531                 cur.autocorrect() = false;
 532                 cur.clearTargetX();
 533                 cur.macroModeClose();
 534                 if (reverseDirectionNeeded(cur))
 535                         goto goto_char_forwards;
 536
 537 goto_char_backwards:
 538                 if (cur.pos() != 0 && cur.openable(cur.prevAtom())) {
 539                         cur.posLeft();
 540                         cur.push(*cur.nextAtom().nucleus());
 541                         cur.inset().idxLast(cur);
 542                 } else if (cur.posLeft() || idxLeft(cur)
 543                         || cur.popLeft() || cur.selection())
 544                         ;
 545                 else {
 546                         cmd = FuncRequest(LFUN_FINISHED_LEFT);
 547                         cur.undispatched();
 548                 }
 549                 break;
 550
 551         case LFUN_DOWN:
 552         case LFUN_UP:
 553                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 554         case LFUN_DOWN_SELECT:
 555         case LFUN_UP_SELECT: {
 556                 // close active macro
 557                 if (cur.inMacroMode()) {
 558                         cur.macroModeClose();
 559                         break;
 560                 }
 561
 562                 // stop/start the selection
 563                 bool select = cmd.action == LFUN_DOWN_SELECT ||
 564                         cmd.action == LFUN_UP_SELECT;
 565                 cur.selHandle(select);
 566
 567                 // go up/down
 568                 bool up = cmd.action == LFUN_UP || cmd.action == LFUN_UP_SELECT;
 569                 bool successful = cur.upDownInMath(up);
 570                 if (successful) {
 571                         // notify left insets and give them chance to set update flags
 572                         lyx::notifyCursorLeaves(cur.beforeDispatchCursor(), cur);
 573                         cur.fixIfBroken();
 574                         break;
 575                 }
 576
 577                 if (cur.fixIfBroken())
 578                         // FIXME: Something bad happened. We pass the corrected Cursor
 579                         // instead of letting things go worse.
 580                         break;
 581
 582                 // We did not manage to move the cursor.
 583                 cur.undispatched();
 584                 break;
 585         }
 586
 587         case LFUN_MOUSE_DOUBLE:
 588         case LFUN_MOUSE_TRIPLE:
 589         case LFUN_WORD_SELECT:
 590                 cur.pos() = 0;
 591                 cur.idx() = 0;
 592                 cur.resetAnchor();
 593                 cur.selection() = true;
 594                 cur.pos() = cur.lastpos();
 595                 cur.idx() = cur.lastidx();
 596                 break;
 597
 598         case LFUN_PARAGRAPH_UP:
 599         case LFUN_PARAGRAPH_DOWN:
 600                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 601         case LFUN_PARAGRAPH_UP_SELECT:
 602         case LFUN_PARAGRAPH_DOWN_SELECT:
 603                 break;
 604
 605         case LFUN_LINE_BEGIN:
 606         case LFUN_WORD_BACKWARD:
 607                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 608         case LFUN_LINE_BEGIN_SELECT:
 609         case LFUN_WORD_BACKWARD_SELECT:
 610                 cur.selHandle(cmd.action == LFUN_WORD_BACKWARD_SELECT ||
 611                                 cmd.action == LFUN_LINE_BEGIN_SELECT);
 612                 cur.macroModeClose();
 613                 if (cur.pos() != 0) {
 614                         cur.pos() = 0;
 615                 } else if (cur.col() != 0) {
 616                         cur.idx() -= cur.col();
 617                         cur.pos() = 0;
 618                 } else if (cur.idx() != 0) {
 619                         cur.idx() = 0;
 620                         cur.pos() = 0;
 621                 } else {
 622                         cmd = FuncRequest(LFUN_FINISHED_LEFT);
 623                         cur.undispatched();
 624                 }
 625                 break;
 626
 627         case LFUN_WORD_FORWARD:
 628         case LFUN_LINE_END:
 629                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 630         case LFUN_WORD_FORWARD_SELECT:
 631         case LFUN_LINE_END_SELECT:
 632                 cur.selHandle(cmd.action == LFUN_WORD_FORWARD_SELECT ||
 633                                 cmd.action == LFUN_LINE_END_SELECT);
 634                 cur.macroModeClose();
 635                 cur.clearTargetX();
 636                 if (cur.pos() != cur.lastpos()) {
 637                         cur.pos() = cur.lastpos();
 638                 } else if (ncols() && (cur.col() != cur.lastcol())) {
 639                         cur.idx() = cur.idx() - cur.col() + cur.lastcol();
 640                         cur.pos() = cur.lastpos();
 641                 } else if (cur.idx() != cur.lastidx()) {
 642                         cur.idx() = cur.lastidx();
 643                         cur.pos() = cur.lastpos();
 644                 } else {
 645                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 646                         cur.undispatched();
 647                 }
 648                 break;
 649
 650         case LFUN_SCREEN_UP_SELECT:
 651                 cmd = FuncRequest(LFUN_FINISHED_LEFT);
 652                 cur.undispatched();
 653                 break;
 654
 655         case LFUN_SCREEN_DOWN_SELECT:
 656                 cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 657                 cur.undispatched();
 658                 break;
 659
 660         case LFUN_CELL_FORWARD:
 661                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 662                 cur.inset().idxNext(cur);
 663                 break;
 664
 665         case LFUN_CELL_BACKWARD:
 666                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 667                 cur.inset().idxPrev(cur);
 668                 break;
 669
 670         case LFUN_WORD_DELETE_BACKWARD:
 671         case LFUN_CHAR_DELETE_BACKWARD:
 672                 if (cur.pos() == 0)
 673                         // May affect external cell:
 674                         recordUndoInset(cur, Undo::ATOMIC);
 675                 else
 676                         recordUndo(cur, Undo::ATOMIC);
 677                 // if the inset can not be removed from within, delete it
 678                 if (!cur.backspace()) {
 679                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 680                         cur.innerText()->dispatch(cur, cmd);
 681                 }
 682                 break;
 683
 684         case LFUN_WORD_DELETE_FORWARD:
 685         case LFUN_CHAR_DELETE_FORWARD:
 686                 if (cur.pos() == cur.lastpos())
 687                         // May affect external cell:
 688                         recordUndoInset(cur, Undo::ATOMIC);
 689                 else
 690                         recordUndo(cur, Undo::ATOMIC);
 691                 // if the inset can not be removed from within, delete it
 692                 if (!cur.erase()) {
 693                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 694                         cur.innerText()->dispatch(cur, cmd);
 695                 }
 696                 break;
 697
 698         case LFUN_ESCAPE:
 699                 if (cur.selection())
 700                         cur.clearSelection();
 701                 else  {
 702                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 703                         cur.undispatched();
 704                 }
 705                 break;
 706
 707         case LFUN_INSET_TOGGLE:
 708                 recordUndo(cur);
 709                 lock(!lock());
 710                 cur.popRight();
 711                 break;
 712
 713         case LFUN_SELF_INSERT:
 714                 if (cmd.argument().size() != 1) {
 715                         recordUndo(cur);
 716                         docstring const arg = cmd.argument();
 717                         if (!interpretString(cur, arg))
 718                                 cur.insert(arg);
 719                         break;
 720                 }
 721                 // Don't record undo steps if we are in macro mode and
 722                 // cmd.argument is the next character of the macro name.
 723                 // Otherwise we'll get an invalid cursor if we undo after
 724                 // the macro was finished and the macro is a known command,
 725                 // e.g. sqrt. Cursor::macroModeClose replaces in this case
 726                 // the InsetMathUnknown with name "frac" by an empty
 727                 // InsetMathFrac -> a pos value > 0 is invalid.
 728                 // A side effect is that an undo before the macro is finished
 729                 // undoes the complete macro, not only the last character.
 730                 if (!cur.inMacroMode())
 731                         recordUndo(cur);
 732
 733                 // spacial handling of space. If we insert an inset
 734                 // via macro mode, we want to put the cursor inside it
 735                 // if relevant. Think typing "\frac<space>".
 736                 if (cmd.argument()[0] == ' '
 737                     && cur.inMacroMode() && cur.macroName() != "\\"
 738                     && cur.macroModeClose()) {
 739                         MathAtom const atom = cur.prevAtom();
 740                         if (atom->asNestInset() && atom->isActive()) {
 741                                 cur.posLeft();
 742                                 cur.pushLeft(*cur.nextInset());
 743                         }
 744                 } else if (!interpretChar(cur, cmd.argument()[0])) {
 745                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 746                         cur.undispatched();
 747                 }
 748                 break;
 749
 750         //case LFUN_SERVER_GET_XY:
 751         //      sprintf(dispatch_buffer, "%d %d",);
 752         //      break;
 753
 754         case LFUN_SERVER_SET_XY: {
 755                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 756                 int x = 0;
 757                 int y = 0;
 758                 istringstream is(to_utf8(cmd.argument()));
 759                 is >> x >> y;
 760                 cur.setScreenPos(x, y);
 761                 break;
 762         }
 763
 764         // Special casing for superscript in case of LyX handling
 765         // dead-keys:
 766         case LFUN_ACCENT_CIRCUMFLEX:
 767                 if (cmd.argument().empty()) {
 768                         // do superscript if LyX handles
 769                         // deadkeys
 770                         recordUndo(cur, Undo::ATOMIC);
 771                         script(cur, true, grabAndEraseSelection(cur));
 772                 }
 773                 break;
 774
 775         case LFUN_ACCENT_UMLAUT:
 776         case LFUN_ACCENT_ACUTE:
 777         case LFUN_ACCENT_GRAVE:
 778         case LFUN_ACCENT_BREVE:
 779         case LFUN_ACCENT_DOT:
 780         case LFUN_ACCENT_MACRON:
 781         case LFUN_ACCENT_CARON:
 782         case LFUN_ACCENT_TILDE:
 783         case LFUN_ACCENT_CEDILLA:
 784         case LFUN_ACCENT_CIRCLE:
 785         case LFUN_ACCENT_UNDERDOT:
 786         case LFUN_ACCENT_TIE:
 787         case LFUN_ACCENT_OGONEK:
 788         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 789                 break;
 790
 791         //  Math fonts
 792         case LFUN_FONT_FREE_APPLY:
 793         case LFUN_FONT_FREE_UPDATE:
 794                 handleFont2(cur, cmd.argument());
 795                 break;
 796
 797         case LFUN_FONT_BOLD:
 798                 if (currentMode() == TEXT_MODE)
 799                         handleFont(cur, cmd.argument(), "textbf");
 800                 else
 801                         handleFont(cur, cmd.argument(), "mathbf");
 802                 break;
 803         case LFUN_FONT_SANS:
 804                 if (currentMode() == TEXT_MODE)
 805                         handleFont(cur, cmd.argument(), "textsf");
 806                 else
 807                         handleFont(cur, cmd.argument(), "mathsf");
 808                 break;
 809         case LFUN_FONT_EMPH:
 810                 if (currentMode() == TEXT_MODE)
 811                         handleFont(cur, cmd.argument(), "emph");
 812                 else
 813                         handleFont(cur, cmd.argument(), "mathcal");
 814                 break;
 815         case LFUN_FONT_ROMAN:
 816                 if (currentMode() == TEXT_MODE)
 817                         handleFont(cur, cmd.argument(), "textrm");
 818                 else
 819                         handleFont(cur, cmd.argument(), "mathrm");
 820                 break;
 821         case LFUN_FONT_TYPEWRITER:
 822                 if (currentMode() == TEXT_MODE)
 823                         handleFont(cur, cmd.argument(), "texttt");
 824                 else
 825                         handleFont(cur, cmd.argument(), "mathtt");
 826                 break;
 827         case LFUN_FONT_FRAK:
 828                 handleFont(cur, cmd.argument(), "mathfrak");
 829                 break;
 830         case LFUN_FONT_ITAL:
 831                 if (currentMode() == TEXT_MODE)
 832                         handleFont(cur, cmd.argument(), "textit");
 833                 else
 834                         handleFont(cur, cmd.argument(), "mathit");
 835                 break;
 836         case LFUN_FONT_NOUN:
 837                 if (currentMode() == TEXT_MODE)
 838                         // FIXME: should be "noun"
 839                         handleFont(cur, cmd.argument(), "textsc");
 840                 else
 841                         handleFont(cur, cmd.argument(), "mathbb");
 842                 break;
 843         /*
 844         case LFUN_FONT_FREE_APPLY:
 845                 handleFont(cur, cmd.argument(), "textrm");
 846                 break;
 847         */
 848         case LFUN_FONT_DEFAULT:
 849                 handleFont(cur, cmd.argument(), "textnormal");
 850                 break;
 851
 852         case LFUN_MATH_MODE: {
 853 #if 1
 854                 // ignore math-mode on when already in math mode
 855                 if (currentMode() == Inset::MATH_MODE && cmd.argument() == "on")
 856                         break;
 857                 cur.macroModeClose();
 858                 docstring const save_selection = grabAndEraseSelection(cur);
 859                 selClearOrDel(cur);
 860                 //cur.plainInsert(MathAtom(new InsetMathMBox(cur.bv())));
 861                 cur.plainInsert(MathAtom(new InsetMathBox(from_ascii("mbox"))));
 862                 cur.posLeft();
 863                 cur.pushLeft(*cur.nextInset());
 864                 cur.niceInsert(save_selection);
 865 #else
 866                 if (currentMode() == Inset::TEXT_MODE) {
 867                         cur.niceInsert(MathAtom(new InsetMathHull("simple")));
 868                         cur.message(_("create new math text environment ($...$)"));
 869                 } else {
 870                         handleFont(cur, cmd.argument(), "textrm");
 871                         cur.message(_("entered math text mode (textrm)"));
 872                 }
 873 #endif
 874                 break;
 875         }
 876
 877         case LFUN_MATH_SIZE:
 878 #if 0
 879                 recordUndo(cur);
 880                 cur.setSize(arg);
 881 #endif
 882                 break;
 883
 884         case LFUN_MATH_MATRIX: {
 885                 recordUndo(cur, Undo::ATOMIC);
 886                 unsigned int m = 1;
 887                 unsigned int n = 1;
 888                 docstring v_align;
 889                 docstring h_align;
 890                 idocstringstream is(cmd.argument());
 891                 is >> m >> n >> v_align >> h_align;
 892                 if (m < 1)
 893                         m = 1;
 894                 if (n < 1)
 895                         n = 1;
 896                 v_align += 'c';
 897                 cur.niceInsert(
 898                         MathAtom(new InsetMathArray(from_ascii("array"), m, n, (char)v_align[0], h_align)));
 899                 break;
 900         }
 901
 902         case LFUN_MATH_DELIM: {
 903                 docstring ls;
 904                 docstring rs = support::split(cmd.argument(), ls, ' ');
 905                 // Reasonable default values
 906                 if (ls.empty())
 907                         ls = '(';
 908                 if (rs.empty())
 909                         rs = ')';
 910                 recordUndo(cur, Undo::ATOMIC);
 911                 cur.handleNest(MathAtom(new InsetMathDelim(ls, rs)));
 912                 break;
 913         }
 914
 915         case LFUN_MATH_BIGDELIM: {
 916                 docstring const lname  = from_utf8(cmd.getArg(0));
 917                 docstring const ldelim = from_utf8(cmd.getArg(1));
 918                 docstring const rname  = from_utf8(cmd.getArg(2));
 919                 docstring const rdelim = from_utf8(cmd.getArg(3));
 920                 latexkeys const * l = in_word_set(lname);
 921                 bool const have_l = l && l->inset == "big" &&
 922                                     InsetMathBig::isBigInsetDelim(ldelim);
 923                 l = in_word_set(rname);
 924                 bool const have_r = l && l->inset == "big" &&
 925                                     InsetMathBig::isBigInsetDelim(rdelim);
 926                 // We mimic LFUN_MATH_DELIM in case we have an empty left
 927                 // or right delimiter.
 928                 if (have_l || have_r) {
 929                         recordUndo(cur, Undo::ATOMIC);
 930                         docstring const selection = grabAndEraseSelection(cur);
 931                         selClearOrDel(cur);
 932                         if (have_l)
 933                                 cur.insert(MathAtom(new InsetMathBig(lname,
 934                                                                 ldelim)));
 935                         cur.niceInsert(selection);
 936                         if (have_r)
 937                                 cur.insert(MathAtom(new InsetMathBig(rname,
 938                                                                 rdelim)));
 939                 }
 940                 // Don't call cur.undispatched() if we did nothing, this would
 941                 // lead to infinite recursion via Text::dispatch().
 942                 break;
 943         }
 944
 945         case LFUN_SPACE_INSERT:
 946         case LFUN_MATH_SPACE:
 947                 recordUndo(cur, Undo::ATOMIC);
 948                 cur.insert(MathAtom(new InsetMathSpace(from_ascii(","))));
 949                 break;
 950
 951         case LFUN_ERT_INSERT:
 952                 // interpret this as if a backslash was typed
 953                 recordUndo(cur, Undo::ATOMIC);
 954                 interpretChar(cur, '\\');
 955                 break;
 956
 957         case LFUN_MATH_SUBSCRIPT:
 958                 // interpret this as if a _ was typed
 959                 recordUndo(cur, Undo::ATOMIC);
 960                 interpretChar(cur, '_');
 961                 break;
 962
 963         case LFUN_MATH_SUPERSCRIPT:
 964                 // interpret this as if a ^ was typed
 965                 recordUndo(cur, Undo::ATOMIC);
 966                 interpretChar(cur, '^');
 967                 break;
 968
 969         case LFUN_QUOTE_INSERT:
 970                 // interpret this as if a straight " was typed
 971                 recordUndo(cur, Undo::ATOMIC);
 972                 interpretChar(cur, '\"');
 973                 break;
 974
 975 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
 976 // handling such that "self-insert" works on "arbitrary stuff" too, and
 977 // math-insert only handles special math things like "matrix".
 978         case LFUN_MATH_INSERT: {
 979                 recordUndo(cur, Undo::ATOMIC);
 980                 if (cmd.argument() == "^" || cmd.argument() == "_") {
 981                         interpretChar(cur, cmd.argument()[0]);
 982                 } else
 983                         cur.niceInsert(cmd.argument());
 984                 break;
 985                 }
 986
 987         case LFUN_DIALOG_SHOW_NEW_INSET: {
 988                 docstring const & name = cmd.argument();
 989                 string data;
 990                 if (name == "ref") {
 991                         InsetMathRef tmp(name);
 992                         data = tmp.createDialogStr(to_utf8(name));
 993                 }
 994                 cur.bv().showInsetDialog(to_utf8(name), data, 0);
 995                 break;
 996         }
 997
 998         case LFUN_INSET_INSERT: {
 999                 MathData ar;
1000                 if (createInsetMath_fromDialogStr(cmd.argument(), ar)) {
1001                         recordUndo(cur);
1002                         cur.insert(ar);
1003                 } else
1004                         cur.undispatched();
1005                 break;
1006         }
1007
1008         default:
1009                 InsetMath::doDispatch(cur, cmd);
1010                 break;
1011         }
1012 }
1013
1014
1015 bool InsetMathNest::getStatus(Cursor & cur, FuncRequest const & cmd,
1016                 FuncStatus & flag) const
1017 {
1018         // the font related toggles
1019         //string tc = "mathnormal";
1020         bool ret = true;
1021         string const arg = to_utf8(cmd.argument());
1022         switch (cmd.action) {
1023         case LFUN_TABULAR_FEATURE:
1024                 flag.enabled(false);
1025                 break;
1026 #if 0
1027         case LFUN_TABULAR_FEATURE:
1028                 // FIXME: check temporarily disabled
1029                 // valign code
1030                 char align = mathcursor::valign();
1031                 if (align == '\0') {
1032                         enable = false;
1033                         break;
1034                 }
1035                 if (cmd.argument().empty()) {
1036                         flag.clear();
1037                         break;
1038                 }
1039                 if (!contains("tcb", cmd.argument()[0])) {
1040                         enable = false;
1041                         break;
1042                 }
1043                 flag.setOnOff(cmd.argument()[0] == align);
1044                 break;
1045 #endif
1046         /// We have to handle them since 1.4 blocks all unhandled actions
1047         case LFUN_FONT_ITAL:
1048         case LFUN_FONT_BOLD:
1049         case LFUN_FONT_SANS:
1050         case LFUN_FONT_EMPH:
1051         case LFUN_FONT_TYPEWRITER:
1052         case LFUN_FONT_NOUN:
1053         case LFUN_FONT_ROMAN:
1054         case LFUN_FONT_DEFAULT:
1055                 flag.enabled(true);
1056                 break;
1057         case LFUN_MATH_MUTATE:
1058                 //flag.setOnOff(mathcursor::formula()->hullType() == to_utf8(cmd.argument()));
1059                 flag.setOnOff(false);
1060                 break;
1061
1062         // we just need to be in math mode to enable that
1063         case LFUN_MATH_SIZE:
1064         case LFUN_MATH_SPACE:
1065         case LFUN_MATH_LIMITS:
1066         case LFUN_MATH_NONUMBER:
1067         case LFUN_MATH_NUMBER:
1068         case LFUN_MATH_EXTERN:
1069                 flag.enabled(true);
1070                 break;
1071
1072         case LFUN_FONT_FRAK:
1073                 flag.enabled(currentMode() != TEXT_MODE);
1074                 break;
1075
1076         case LFUN_MATH_INSERT: {
1077                 bool const textarg =
1078                         arg == "\\textbf"   || arg == "\\textsf" ||
1079                         arg == "\\textrm"   || arg == "\\textmd" ||
1080                         arg == "\\textit"   || arg == "\\textsc" ||
1081                         arg == "\\textsl"   || arg == "\\textup" ||
1082                         arg == "\\texttt"   || arg == "\\textbb" ||
1083                         arg == "\\textnormal";
1084                 flag.enabled(currentMode() != TEXT_MODE || textarg);
1085                 break;
1086         }
1087
1088         case LFUN_MATH_MATRIX:
1089                 flag.enabled(currentMode() == MATH_MODE);
1090                 break;
1091
1092         case LFUN_INSET_INSERT: {
1093                 // Don't test createMathInset_fromDialogStr(), since
1094                 // getStatus is not called with a valid reference and the
1095                 // dialog would not be applyable.
1096                 string const name = cmd.getArg(0);
1097                 flag.enabled(name == "ref");
1098                 break;
1099         }
1100
1101         case LFUN_MATH_DELIM:
1102         case LFUN_MATH_BIGDELIM:
1103                 // Don't do this with multi-cell selections
1104                 flag.enabled(cur.selBegin().idx() == cur.selEnd().idx());
1105                 break;
1106
1107         case LFUN_HYPHENATION_POINT_INSERT:
1108         case LFUN_LIGATURE_BREAK_INSERT:
1109         case LFUN_MENU_SEPARATOR_INSERT:
1110         case LFUN_DOTS_INSERT:
1111         case LFUN_END_OF_SENTENCE_PERIOD_INSERT:
1112                 // FIXME: These would probably make sense in math-text mode
1113                 flag.enabled(false);
1114                 break;
1115
1116         default:
1117                 ret = false;
1118                 break;
1119         }
1120         return ret;
1121 }
1122
1123
1124 void InsetMathNest::edit(Cursor & cur, bool left)
1125 {
1126         cur.push(*this);
1127         cur.idx() = left ? 0 : cur.lastidx();
1128         cur.pos() = left ? 0 : cur.lastpos();
1129         cur.resetAnchor();
1130         //lyxerr << "InsetMathNest::edit, cur:\n" << cur << endl;
1131 }
1132
1133
1134 Inset * InsetMathNest::editXY(Cursor & cur, int x, int y)
1135 {
1136         int idx_min = 0;
1137         int dist_min = 1000000;
1138         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1139                 int const d = cell(i).dist(cur.bv(), x, y);
1140                 if (d < dist_min) {
1141                         dist_min = d;
1142                         idx_min = i;
1143                 }
1144         }
1145         MathData & ar = cell(idx_min);
1146         cur.push(*this);
1147         cur.idx() = idx_min;
1148         cur.pos() = ar.x2pos(x - ar.xo(cur.bv()));
1149
1150         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1151         if (dist_min == 0) {
1152                 // hit inside cell
1153                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1154                         if (ar[i]->covers(cur.bv(), x, y))
1155                                 return ar[i].nucleus()->editXY(cur, x, y);
1156         }
1157         return this;
1158 }
1159
1160
1161 void InsetMathNest::lfunMousePress(Cursor & cur, FuncRequest & cmd)
1162 {
1163         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1164         BufferView & bv = cur.bv();
1165         bv.mouseSetCursor(cur);
1166         if (cmd.button() == mouse_button::button1) {
1167                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1168                 // Update the cursor update flags as needed:
1169                 //
1170                 // Update::Decoration: tells to update the decoration
1171                 //                     (visual box corners that define
1172                 //                     the inset)/
1173                 // Update::FitCursor: adjust the screen to the cursor
1174                 //                    position if needed
1175                 // cur.result().update(): don't overwrite previously set flags.
1176                 cur.updateFlags(Update::Decoration | Update::FitCursor
1177                                 | cur.result().update());
1178         } else if (cmd.button() == mouse_button::button2) {
1179                 if (cap::selection()) {
1180                         // See comment in Text::dispatch why we do this
1181                         cap::copySelectionToStack();
1182                         cmd = FuncRequest(LFUN_PASTE, "0");
1183                         doDispatch(bv.cursor(), cmd);
1184                 } else {
1185                         MathData ar;
1186                         asArray(theSelection().get(), ar);
1187                         bv.cursor().insert(ar);
1188                 }
1189         }
1190 }
1191
1192
1193 void InsetMathNest::lfunMouseMotion(Cursor & cur, FuncRequest & cmd)
1194 {
1195         // only select with button 1
1196         if (cmd.button() == mouse_button::button1) {
1197                 Cursor & bvcur = cur.bv().cursor();
1198                 if (bvcur.anchor_.hasPart(cur)) {
1199                         //lyxerr << "## lfunMouseMotion: cursor: " << cur << endl;
1200                         bvcur.setCursor(cur);
1201                         bvcur.selection() = true;
1202                         //lyxerr << "MOTION " << bvcur << endl;
1203                 } else
1204                         cur.undispatched();
1205         }
1206 }
1207
1208
1209 void InsetMathNest::lfunMouseRelease(Cursor & cur, FuncRequest & cmd)
1210 {
1211         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1212
1213         if (cmd.button() == mouse_button::button1) {
1214                 if (!cur.selection())
1215                         cur.noUpdate();
1216                 else {
1217                         Cursor & bvcur = cur.bv().cursor();
1218                         bvcur.selection() = true;
1219                 }
1220                 return;
1221         }
1222
1223         cur.undispatched();
1224 }
1225
1226
1227 bool InsetMathNest::interpretChar(Cursor & cur, char_type c)
1228 {
1229         //lyxerr << "interpret 2: '" << c << "'" << endl;
1230         docstring save_selection;
1231         if (c == '^' || c == '_')
1232                 save_selection = grabAndEraseSelection(cur);
1233
1234         cur.clearTargetX();
1235
1236         // handle macroMode
1237         if (cur.inMacroMode()) {
1238                 docstring name = cur.macroName();
1239
1240                 /// are we currently typing '#1' or '#2' or...?
1241                 if (name == "\\#") {
1242                         cur.backspace();
1243                         int n = c - '0';
1244                         if (n >= 1 && n <= 9)
1245                                 cur.insert(new MathMacroArgument(n));
1246                         return true;
1247                 }
1248
1249                 if (isAlphaASCII(c)) {
1250                         cur.activeMacro()->setName(name + docstring(1, c));
1251                         return true;
1252                 }
1253
1254                 // handle 'special char' macros
1255                 if (name == "\\") {
1256                         // remove the '\\'
1257                         if (c == '\\') {
1258                                 cur.backspace();
1259                                 if (currentMode() == InsetMath::TEXT_MODE)
1260                                         cur.niceInsert(createInsetMath("textbackslash"));
1261                                 else
1262                                         cur.niceInsert(createInsetMath("backslash"));
1263                         } else if (c == '{') {
1264                                 cur.backspace();
1265                                 cur.niceInsert(MathAtom(new InsetMathBrace));
1266                         } else if (c == '%') {
1267                                 cur.backspace();
1268                                 cur.niceInsert(MathAtom(new InsetMathComment));
1269                         } else if (c == '#') {
1270                                 BOOST_ASSERT(cur.activeMacro());
1271                                 cur.activeMacro()->setName(name + docstring(1, c));
1272                         } else {
1273                                 cur.backspace();
1274                                 cur.niceInsert(createInsetMath(docstring(1, c)));
1275                         }
1276                         return true;
1277                 }
1278
1279                 // One character big delimiters. The others are handled in
1280                 // interpretString().
1281                 latexkeys const * l = in_word_set(name.substr(1));
1282                 if (name[0] == '\\' && l && l->inset == "big") {
1283                         docstring delim;
1284                         switch (c) {
1285                         case '{':
1286                                 delim = from_ascii("\\{");
1287                                 break;
1288                         case '}':
1289                                 delim = from_ascii("\\}");
1290                                 break;
1291                         default:
1292                                 delim = docstring(1, c);
1293                                 break;
1294                         }
1295                         if (InsetMathBig::isBigInsetDelim(delim)) {
1296                                 // name + delim ared a valid InsetMathBig.
1297                                 // We can't use cur.macroModeClose() because
1298                                 // it does not handle delim.
1299                                 InsetMathUnknown * p = cur.activeMacro();
1300                                 p->finalize();
1301                                 --cur.pos();
1302                                 cur.cell().erase(cur.pos());
1303                                 cur.plainInsert(MathAtom(
1304                                         new InsetMathBig(name.substr(1), delim)));
1305                                 return true;
1306                         }
1307                 }
1308
1309                 // leave macro mode and try again if necessary
1310                 cur.macroModeClose();
1311                 if (c == '{')
1312                         cur.niceInsert(MathAtom(new InsetMathBrace));
1313                 else if (c != ' ')
1314                         interpretChar(cur, c);
1315                 return true;
1316         }
1317
1318         // This is annoying as one has to press <space> far too often.
1319         // Disable it.
1320
1321 #if 0
1322                 // leave autocorrect mode if necessary
1323                 if (autocorrect() && c == ' ') {
1324                         autocorrect() = false;
1325                         return true;
1326                 }
1327 #endif
1328
1329         // just clear selection on pressing the space bar
1330         if (cur.selection() && c == ' ') {
1331                 cur.selection() = false;
1332                 return true;
1333         }
1334
1335         selClearOrDel(cur);
1336
1337         if (c == '\\') {
1338                 //lyxerr << "starting with macro" << endl;
1339                 cur.insert(MathAtom(new InsetMathUnknown(from_ascii("\\"), false)));
1340                 return true;
1341         }
1342
1343         if (c == '\n') {
1344                 if (currentMode() == InsetMath::TEXT_MODE)
1345                         cur.insert(c);
1346                 return true;
1347         }
1348
1349         if (c == ' ') {
1350                 if (currentMode() == InsetMath::TEXT_MODE) {
1351                         // insert spaces in text mode,
1352                         // but suppress direct insertion of two spaces in a row
1353                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1354                         // it is better than nothing...
1355                         if (!cur.pos() != 0 || cur.prevAtom()->getChar() != ' ') {
1356                                 cur.insert(c);
1357                                 // FIXME: we have to enable full redraw here because of the
1358                                 // visual box corners that define the inset. If we know for
1359                                 // sure that we stay within the same cell we can optimize for
1360                                 // that using:
1361                                 //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1362                         }
1363                         return true;
1364                 }
1365                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1366                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1367                         // FIXME: we have to enable full redraw here because of the
1368                         // visual box corners that define the inset. If we know for
1369                         // sure that we stay within the same cell we can optimize for
1370                         // that using:
1371                         //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1372                         return true;
1373                 }
1374
1375                 if (cur.popRight()) {
1376                         // FIXME: we have to enable full redraw here because of the
1377                         // visual box corners that define the inset. If we know for
1378                         // sure that we stay within the same cell we can optimize for
1379                         // that using:
1380                         //cur.updateFlags(Update::FitCursor);
1381                         return true;
1382                 }
1383
1384                 // if we are at the very end, leave the formula
1385                 return cur.pos() != cur.lastpos();
1386         }
1387
1388         // These shouldn't work in text mode:
1389         if (currentMode() != InsetMath::TEXT_MODE) {
1390                 if (c == '_') {
1391                         script(cur, false, save_selection);
1392                         return true;
1393                 }
1394                 if (c == '^') {
1395                         script(cur, true, save_selection);
1396                         return true;
1397                 }
1398                 if (c == '~') {
1399                         cur.niceInsert(createInsetMath("sim"));
1400                         return true;
1401                 }
1402         }
1403
1404         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1405             c == '%' || c == '_' || c == '^') {
1406                 cur.niceInsert(createInsetMath(docstring(1, c)));
1407                 return true;
1408         }
1409
1410
1411         // try auto-correction
1412         //if (autocorrect() && hasPrevAtom() && math_autocorrect(prevAtom(), c))
1413         //      return true;
1414
1415         // no special circumstances, so insert the character without any fuss
1416         cur.insert(c);
1417         cur.autocorrect() = true;
1418         return true;
1419 }
1420
1421
1422 bool InsetMathNest::interpretString(Cursor & cur, docstring const & str)
1423 {
1424         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1425         // possible
1426         if (!cur.empty() && cur.pos() > 0 &&
1427             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1428                 if (InsetMathBig::isBigInsetDelim(str)) {
1429                         docstring prev = asString(cur.cell()[cur.pos() - 1]);
1430                         if (prev[0] == '\\') {
1431                                 prev = prev.substr(1);
1432                                 latexkeys const * l = in_word_set(prev);
1433                                 if (l && l->inset == "big") {
1434                                         cur.cell()[cur.pos() - 1] =
1435                                                 MathAtom(new InsetMathBig(prev, str));
1436                                         return true;
1437                                 }
1438                         }
1439                 }
1440         }
1441         return false;
1442 }
1443
1444
1445 bool InsetMathNest::script(Cursor & cur, bool up,
1446                 docstring const & save_selection)
1447 {
1448         // Hack to get \^ and \_ working
1449         //lyxerr << "handling script: up: " << up << endl;
1450         if (cur.inMacroMode() && cur.macroName() == "\\") {
1451                 if (up)
1452                         cur.niceInsert(createInsetMath("mathcircumflex"));
1453                 else
1454                         interpretChar(cur, '_');
1455                 return true;
1456         }
1457
1458         cur.macroModeClose();
1459         if (asScriptInset() && cur.idx() == 0) {
1460                 // we are in a nucleus of a script inset, move to _our_ script
1461                 InsetMathScript * inset = asScriptInset();
1462                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1463                 inset->ensure(up);
1464                 cur.idx() = inset->idxOfScript(up);
1465                 cur.pos() = 0;
1466         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1467                 --cur.pos();
1468                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1469                 cur.push(*inset);
1470                 inset->ensure(up);
1471                 cur.idx() = inset->idxOfScript(up);
1472                 cur.pos() = cur.lastpos();
1473         } else {
1474                 // convert the thing to our left to a scriptinset or create a new
1475                 // one if in the very first position of the array
1476                 if (cur.pos() == 0) {
1477                         //lyxerr << "new scriptinset" << endl;
1478                         cur.insert(new InsetMathScript(up));
1479                 } else {
1480                         //lyxerr << "converting prev atom " << endl;
1481                         cur.prevAtom() = MathAtom(new InsetMathScript(cur.prevAtom(), up));
1482                 }
1483                 --cur.pos();
1484                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1485                 // See comment in MathParser.cpp for special handling of {}-bases
1486
1487                 cur.push(*inset);
1488                 cur.idx() = 1;
1489                 cur.pos() = 0;
1490         }
1491         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1492         cur.niceInsert(save_selection);
1493         cur.resetAnchor();
1494         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1495         return true;
1496 }
1497
1498
1499 } // namespace lyx