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), mouse_hover_(false)
  78 {}
  79
  80
  81 InsetMathNest::InsetMathNest(InsetMathNest const & inset)
  82         : InsetMath(inset), cells_(inset.cells_), lock_(inset.lock_),
  83           mouse_hover_(false)
  84 {}
  85
  86
  87 InsetMathNest & InsetMathNest::operator=(InsetMathNest const & inset)
  88 {
  89         cells_ = inset.cells_;
  90         lock_ = inset.lock_;
  91         mouse_hover_ = false;
  92         InsetMath::operator=(inset);
  93         return *this;
  94 }
  95
  96
  97 InsetMath::idx_type InsetMathNest::nargs() const
  98 {
  99         return cells_.size();
 100 }
 101
 102
 103 void InsetMathNest::cursorPos(BufferView const & bv,
 104                 CursorSlice const & sl, bool /*boundary*/,
 105                 int & x, int & y) const
 106 {
 107 // FIXME: This is a hack. Ideally, the coord cache should not store
 108 // absolute positions, but relative ones. This would mean to call
 109 // setXY() not in MathData::draw(), but in the parent insets' draw()
 110 // with the correctly adjusted x,y values. But this means that we'd have
 111 // to touch all (math)inset's draw() methods. Right now, we'll store
 112 // absolute value, and make them here relative, only to make them
 113 // absolute again when actually drawing the cursor. What a mess.
 114         BOOST_ASSERT(ptr_cmp(&sl.inset(), this));
 115         MathData const & ar = sl.cell();
 116         CoordCache const & coord_cache = bv.coordCache();
 117         if (!coord_cache.getArrays().has(&ar)) {
 118                 // this can (semi-)legally happen if we just created this cell
 119                 // and it never has been drawn before. So don't ASSERT.
 120                 //lyxerr << "no cached data for array " << &ar << endl;
 121                 x = 0;
 122                 y = 0;
 123                 return;
 124         }
 125         Point const pt = coord_cache.getArrays().xy(&ar);
 126         if (!coord_cache.getInsets().has(this)) {
 127                 // same as above
 128                 //lyxerr << "no cached data for inset " << this << endl;
 129                 x = 0;
 130                 y = 0;
 131                 return;
 132         }
 133         Point const pt2 = coord_cache.getInsets().xy(this);
 134         //lyxerr << "retrieving position cache for MathData "
 135         //      << pt.x_ << ' ' << pt.y_ << std::endl;
 136         x = pt.x_ - pt2.x_ + ar.pos2x(sl.pos());
 137         y = pt.y_ - pt2.y_;
 138 //      lyxerr << "pt.y_ : " << pt.y_ << " pt2_.y_ : " << pt2.y_
 139 //              << " asc: " << ascent() << "  des: " << descent()
 140 //              << " ar.asc: " << ar.ascent() << " ar.des: " << ar.descent() << endl;
 141         // move cursor visually into empty cells ("blue rectangles");
 142         if (ar.empty())
 143                 x += 2;
 144 }
 145
 146
 147 void InsetMathNest::metrics(MetricsInfo const & mi) const
 148 {
 149         MetricsInfo m = mi;
 150         for (idx_type i = 0, n = nargs(); i != n; ++i)
 151                 cell(i).metrics(m);
 152 }
 153
 154
 155 bool InsetMathNest::idxNext(Cursor & cur) const
 156 {
 157         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 158         if (cur.idx() == cur.lastidx())
 159                 return false;
 160         ++cur.idx();
 161         cur.pos() = 0;
 162         return true;
 163 }
 164
 165
 166 bool InsetMathNest::idxRight(Cursor & cur) const
 167 {
 168         return idxNext(cur);
 169 }
 170
 171
 172 bool InsetMathNest::idxPrev(Cursor & cur) const
 173 {
 174         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 175         if (cur.idx() == 0)
 176                 return false;
 177         --cur.idx();
 178         cur.pos() = cur.lastpos();
 179         return true;
 180 }
 181
 182
 183 bool InsetMathNest::idxLeft(Cursor & cur) const
 184 {
 185         return idxPrev(cur);
 186 }
 187
 188
 189 bool InsetMathNest::idxFirst(Cursor & cur) const
 190 {
 191         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 192         if (nargs() == 0)
 193                 return false;
 194         cur.idx() = 0;
 195         cur.pos() = 0;
 196         return true;
 197 }
 198
 199
 200 bool InsetMathNest::idxLast(Cursor & cur) const
 201 {
 202         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 203         if (nargs() == 0)
 204                 return false;
 205         cur.idx() = cur.lastidx();
 206         cur.pos() = cur.lastpos();
 207         return true;
 208 }
 209
 210
 211 void InsetMathNest::dump() const
 212 {
 213         odocstringstream oss;
 214         WriteStream os(oss);
 215         os << "---------------------------------------------\n";
 216         write(os);
 217         os << "\n";
 218         for (idx_type i = 0, n = nargs(); i != n; ++i)
 219                 os << cell(i) << "\n";
 220         os << "---------------------------------------------\n";
 221         lyxerr << to_utf8(oss.str());
 222 }
 223
 224
 225 void InsetMathNest::draw(PainterInfo & pi, int x, int y) const
 226 {
 227 #if 0
 228         if (lock_)
 229                 pi.pain.fillRectangle(x, y - ascent(), width(), height(),
 230                                         Color::mathlockbg);
 231 #endif
 232         setPosCache(pi, x, y);
 233 }
 234
 235
 236 void InsetMathNest::drawSelection(PainterInfo & pi, int x, int y) const
 237 {
 238         BufferView & bv = *pi.base.bv;
 239         // this should use the x/y values given, not the cached values
 240         Cursor & cur = bv.cursor();
 241         if (!cur.selection())
 242                 return;
 243         if (!ptr_cmp(&cur.inset(), this))
 244                 return;
 245
 246         // FIXME: hack to get position cache warm
 247         pi.pain.setDrawingEnabled(false);
 248         draw(pi, x, y);
 249         pi.pain.setDrawingEnabled(true);
 250
 251         CursorSlice s1 = cur.selBegin();
 252         CursorSlice s2 = cur.selEnd();
 253
 254         //lyxerr << "InsetMathNest::drawing selection: "
 255         //      << " s1: " << s1 << " s2: " << s2 << endl;
 256         if (s1.idx() == s2.idx()) {
 257                 MathData const & c = cell(s1.idx());
 258                 int x1 = c.xo(bv) + c.pos2x(s1.pos());
 259                 int y1 = c.yo(bv) - c.ascent();
 260                 int x2 = c.xo(bv) + c.pos2x(s2.pos());
 261                 int y2 = c.yo(bv) + c.descent();
 262                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, Color::selection);
 263         //lyxerr << "InsetMathNest::drawing selection 3: "
 264         //      << " x1: " << x1 << " x2: " << x2
 265         //      << " y1: " << y1 << " y2: " << y2 << endl;
 266         } else {
 267                 for (idx_type i = 0; i < nargs(); ++i) {
 268                         if (idxBetween(i, s1.idx(), s2.idx())) {
 269                                 MathData const & c = cell(i);
 270                                 int x1 = c.xo(bv);
 271                                 int y1 = c.yo(bv) - c.ascent();
 272                                 int x2 = c.xo(bv) + c.width();
 273                                 int y2 = c.yo(bv) + c.descent();
 274                                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, Color::selection);
 275                         }
 276                 }
 277         }
 278 }
 279
 280
 281 void InsetMathNest::validate(LaTeXFeatures & features) const
 282 {
 283         for (idx_type i = 0; i < nargs(); ++i)
 284                 cell(i).validate(features);
 285 }
 286
 287
 288 void InsetMathNest::replace(ReplaceData & rep)
 289 {
 290         for (idx_type i = 0; i < nargs(); ++i)
 291                 cell(i).replace(rep);
 292 }
 293
 294
 295 bool InsetMathNest::contains(MathData const & ar) const
 296 {
 297         for (idx_type i = 0; i < nargs(); ++i)
 298                 if (cell(i).contains(ar))
 299                         return true;
 300         return false;
 301 }
 302
 303
 304 bool InsetMathNest::lock() const
 305 {
 306         return lock_;
 307 }
 308
 309
 310 void InsetMathNest::lock(bool l)
 311 {
 312         lock_ = l;
 313 }
 314
 315
 316 bool InsetMathNest::isActive() const
 317 {
 318         return nargs() > 0;
 319 }
 320
 321
 322 MathData InsetMathNest::glue() const
 323 {
 324         MathData ar;
 325         for (size_t i = 0; i < nargs(); ++i)
 326                 ar.append(cell(i));
 327         return ar;
 328 }
 329
 330
 331 void InsetMathNest::write(WriteStream & os) const
 332 {
 333         os << '\\' << name().c_str();
 334         for (size_t i = 0; i < nargs(); ++i)
 335                 os << '{' << cell(i) << '}';
 336         if (nargs() == 0)
 337                 os.pendingSpace(true);
 338         if (lock_ && !os.latex()) {
 339                 os << "\\lyxlock";
 340                 os.pendingSpace(true);
 341         }
 342 }
 343
 344
 345 void InsetMathNest::normalize(NormalStream & os) const
 346 {
 347         os << '[' << name().c_str();
 348         for (size_t i = 0; i < nargs(); ++i)
 349                 os << ' ' << cell(i);
 350         os << ']';
 351 }
 352
 353
 354 int InsetMathNest::latex(Buffer const &, odocstream & os,
 355                         OutputParams const & runparams) const
 356 {
 357         WriteStream wi(os, runparams.moving_arg, true);
 358         write(wi);
 359         return wi.line();
 360 }
 361
 362
 363 bool InsetMathNest::setMouseHover(bool mouse_hover)
 364 {
 365         mouse_hover_ = mouse_hover;
 366         return true;
 367 }
 368
 369
 370 bool InsetMathNest::notifyCursorLeaves(Cursor & /*cur*/)
 371 {
 372 #ifdef WITH_WARNINGS
 373 #warning look here
 374 #endif
 375 #if 0
 376         MathData & ar = cur.cell();
 377         // remove base-only "scripts"
 378         for (pos_type i = 0; i + 1 < ar.size(); ++i) {
 379                 InsetMathScript * p = operator[](i).nucleus()->asScriptInset();
 380                 if (p && p->nargs() == 1) {
 381                         MathData ar = p->nuc();
 382                         erase(i);
 383                         insert(i, ar);
 384                         cur.adjust(i, ar.size() - 1);
 385                 }
 386         }
 387
 388         // glue adjacent font insets of the same kind
 389         for (pos_type i = 0; i + 1 < size(); ++i) {
 390                 InsetMathFont * p = operator[](i).nucleus()->asFontInset();
 391                 InsetMathFont const * q = operator[](i + 1)->asFontInset();
 392                 if (p && q && p->name() == q->name()) {
 393                         p->cell(0).append(q->cell(0));
 394                         erase(i + 1);
 395                         cur.adjust(i, -1);
 396                 }
 397         }
 398 #endif
 399         return false;
 400 }
 401
 402
 403 void InsetMathNest::handleFont
 404         (Cursor & cur, docstring const & arg, char const * const font)
 405 {
 406         handleFont(cur, arg, from_ascii(font));
 407 }
 408
 409
 410 void InsetMathNest::handleFont
 411         (Cursor & cur, docstring const & arg, docstring const & font)
 412 {
 413         // this whole function is a hack and won't work for incremental font
 414         // changes...
 415
 416         if (cur.inset().asInsetMath()->name() == font) {
 417                 recordUndoInset(cur, Undo::ATOMIC);
 418                 cur.handleFont(to_utf8(font));
 419         } else {
 420                 recordUndo(cur, Undo::ATOMIC);
 421                 cur.handleNest(createInsetMath(font));
 422                 cur.insert(arg);
 423         }
 424 }
 425
 426
 427 void InsetMathNest::handleFont2(Cursor & cur, docstring const & arg)
 428 {
 429         recordUndo(cur, Undo::ATOMIC);
 430         Font font;
 431         bool b;
 432         bv_funcs::string2font(to_utf8(arg), font, b);
 433         if (font.color() != Color::inherit) {
 434                 MathAtom at = MathAtom(new InsetMathColor(true, font.color()));
 435                 cur.handleNest(at, 0);
 436         }
 437 }
 438
 439
 440 void InsetMathNest::doDispatch(Cursor & cur, FuncRequest & cmd)
 441 {
 442         //lyxerr << "InsetMathNest: request: " << cmd << std::endl;
 443         //CursorSlice sl = cur.current();
 444
 445         switch (cmd.action) {
 446
 447         case LFUN_PASTE: {
 448                 recordUndo(cur);
 449                 cur.message(_("Paste"));
 450                 replaceSelection(cur);
 451                 docstring topaste;
 452                 if (cmd.argument().empty() && !theClipboard().isInternal())
 453                         topaste = theClipboard().getAsText();
 454                 else {
 455                         size_t n = 0;
 456                         idocstringstream is(cmd.argument());
 457                         is >> n;
 458                         topaste = cap::getSelection(cur.buffer(), n);
 459                 }
 460                 cur.niceInsert(topaste);
 461                 cur.clearSelection(); // bug 393
 462                 cur.bv().switchKeyMap();
 463                 finishUndo();
 464                 break;
 465         }
 466
 467         case LFUN_CUT:
 468                 recordUndo(cur);
 469                 cutSelection(cur, true, true);
 470                 cur.message(_("Cut"));
 471                 // Prevent stale position >= size crash
 472                 // Probably not necessary anymore, see eraseSelection (gb 2005-10-09)
 473                 cur.normalize();
 474                 break;
 475
 476         case LFUN_COPY:
 477                 copySelection(cur);
 478                 cur.message(_("Copy"));
 479                 break;
 480
 481         case LFUN_MOUSE_PRESS:
 482                 lfunMousePress(cur, cmd);
 483                 break;
 484
 485         case LFUN_MOUSE_MOTION:
 486                 lfunMouseMotion(cur, cmd);
 487                 break;
 488
 489         case LFUN_MOUSE_RELEASE:
 490                 lfunMouseRelease(cur, cmd);
 491                 break;
 492
 493         case LFUN_FINISHED_LEFT:
 494                 cur.bv().cursor() = cur;
 495                 break;
 496
 497         case LFUN_FINISHED_RIGHT:
 498                 ++cur.pos();
 499                 cur.bv().cursor() = cur;
 500                 break;
 501
 502         case LFUN_CHAR_FORWARD:
 503                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 504         case LFUN_CHAR_FORWARD_SELECT:
 505                 cur.selHandle(cmd.action == LFUN_CHAR_FORWARD_SELECT);
 506                 cur.autocorrect() = false;
 507                 cur.clearTargetX();
 508                 cur.macroModeClose();
 509                 if (reverseDirectionNeeded(cur))
 510                         goto goto_char_backwards;
 511
 512 goto_char_forwards:
 513                 if (cur.pos() != cur.lastpos() && cur.openable(cur.nextAtom())) {
 514                         cur.pushLeft(*cur.nextAtom().nucleus());
 515                         cur.inset().idxFirst(cur);
 516                 } else if (cur.posRight() || idxRight(cur)
 517                         || cur.popRight() || cur.selection())
 518                         ;
 519                 else {
 520                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 521                         cur.undispatched();
 522                 }
 523                 break;
 524
 525         case LFUN_CHAR_BACKWARD:
 526                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 527         case LFUN_CHAR_BACKWARD_SELECT:
 528                 cur.selHandle(cmd.action == LFUN_CHAR_BACKWARD_SELECT);
 529                 cur.autocorrect() = false;
 530                 cur.clearTargetX();
 531                 cur.macroModeClose();
 532                 if (reverseDirectionNeeded(cur))
 533                         goto goto_char_forwards;
 534
 535 goto_char_backwards:
 536                 if (cur.pos() != 0 && cur.openable(cur.prevAtom())) {
 537                         cur.posLeft();
 538                         cur.push(*cur.nextAtom().nucleus());
 539                         cur.inset().idxLast(cur);
 540                 } else if (cur.posLeft() || idxLeft(cur)
 541                         || cur.popLeft() || cur.selection())
 542                         ;
 543                 else {
 544                         cmd = FuncRequest(LFUN_FINISHED_LEFT);
 545                         cur.undispatched();
 546                 }
 547                 break;
 548
 549         case LFUN_UP:
 550                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 551         case LFUN_UP_SELECT:
 552                 // FIXME Tried to use clearTargetX and macroModeClose, crashed on cur.up()
 553                 if (cur.inMacroMode()) {
 554                         // Make Helge happy
 555                         cur.macroModeClose();
 556                         break;
 557                 }
 558                 cur.selHandle(cmd.action == LFUN_UP_SELECT);
 559                 if (!cur.upDownInMath(true))
 560                         cur.undispatched();
 561                 // fixes bug 1598. Please check!
 562                 cur.normalize();
 563                 break;
 564
 565         case LFUN_DOWN:
 566                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 567         case LFUN_DOWN_SELECT:
 568                 if (cur.inMacroMode()) {
 569                         cur.macroModeClose();
 570                         break;
 571                 }
 572                 cur.selHandle(cmd.action == LFUN_DOWN_SELECT);
 573                 if (!cur.upDownInMath(false))
 574                         cur.undispatched();
 575                 // fixes bug 1598. Please check!
 576                 cur.normalize();
 577                 break;
 578
 579         case LFUN_MOUSE_DOUBLE:
 580         case LFUN_MOUSE_TRIPLE:
 581         case LFUN_WORD_SELECT:
 582                 cur.pos() = 0;
 583                 cur.idx() = 0;
 584                 cur.resetAnchor();
 585                 cur.selection() = true;
 586                 cur.pos() = cur.lastpos();
 587                 cur.idx() = cur.lastidx();
 588                 cap::saveSelection(cur);
 589                 break;
 590
 591         case LFUN_PARAGRAPH_UP:
 592         case LFUN_PARAGRAPH_DOWN:
 593                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 594         case LFUN_PARAGRAPH_UP_SELECT:
 595         case LFUN_PARAGRAPH_DOWN_SELECT:
 596                 break;
 597
 598         case LFUN_LINE_BEGIN:
 599         case LFUN_WORD_BACKWARD:
 600                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 601         case LFUN_LINE_BEGIN_SELECT:
 602         case LFUN_WORD_BACKWARD_SELECT:
 603                 cur.selHandle(cmd.action == LFUN_WORD_BACKWARD_SELECT ||
 604                                 cmd.action == LFUN_LINE_BEGIN_SELECT);
 605                 cur.macroModeClose();
 606                 if (cur.pos() != 0) {
 607                         cur.pos() = 0;
 608                 } else if (cur.col() != 0) {
 609                         cur.idx() -= cur.col();
 610                         cur.pos() = 0;
 611                 } else if (cur.idx() != 0) {
 612                         cur.idx() = 0;
 613                         cur.pos() = 0;
 614                 } else {
 615                         cmd = FuncRequest(LFUN_FINISHED_LEFT);
 616                         cur.undispatched();
 617                 }
 618                 break;
 619
 620         case LFUN_WORD_FORWARD:
 621         case LFUN_LINE_END:
 622                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 623         case LFUN_WORD_FORWARD_SELECT:
 624         case LFUN_LINE_END_SELECT:
 625                 cur.selHandle(cmd.action == LFUN_WORD_FORWARD_SELECT ||
 626                                 cmd.action == LFUN_LINE_END_SELECT);
 627                 cur.macroModeClose();
 628                 cur.clearTargetX();
 629                 if (cur.pos() != cur.lastpos()) {
 630                         cur.pos() = cur.lastpos();
 631                 } else if (ncols() && (cur.col() != cur.lastcol())) {
 632                         cur.idx() = cur.idx() - cur.col() + cur.lastcol();
 633                         cur.pos() = cur.lastpos();
 634                 } else if (cur.idx() != cur.lastidx()) {
 635                         cur.idx() = cur.lastidx();
 636                         cur.pos() = cur.lastpos();
 637                 } else {
 638                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 639                         cur.undispatched();
 640                 }
 641                 break;
 642
 643         case LFUN_SCREEN_UP_SELECT:
 644         case LFUN_SCREEN_UP:
 645                 cmd = FuncRequest(LFUN_FINISHED_LEFT);
 646                 cur.undispatched();
 647                 break;
 648
 649         case LFUN_SCREEN_DOWN_SELECT:
 650         case LFUN_SCREEN_DOWN:
 651                 cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 652                 cur.undispatched();
 653                 break;
 654
 655         case LFUN_CELL_FORWARD:
 656                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 657                 cur.inset().idxNext(cur);
 658                 break;
 659
 660         case LFUN_CELL_BACKWARD:
 661                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 662                 cur.inset().idxPrev(cur);
 663                 break;
 664
 665         case LFUN_WORD_DELETE_BACKWARD:
 666         case LFUN_CHAR_DELETE_BACKWARD:
 667                 if (cur.pos() == 0)
 668                         // May affect external cell:
 669                         recordUndoInset(cur, Undo::ATOMIC);
 670                 else
 671                         recordUndo(cur, Undo::ATOMIC);
 672                 // if the inset can not be removed from within, delete it
 673                 if (!cur.backspace()) {
 674                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 675                         cur.innerText()->dispatch(cur, cmd);
 676                 }
 677                 break;
 678
 679         case LFUN_WORD_DELETE_FORWARD:
 680         case LFUN_CHAR_DELETE_FORWARD:
 681                 if (cur.pos() == cur.lastpos())
 682                         // May affect external cell:
 683                         recordUndoInset(cur, Undo::ATOMIC);
 684                 else
 685                         recordUndo(cur, Undo::ATOMIC);
 686                 // if the inset can not be removed from within, delete it
 687                 if (!cur.erase()) {
 688                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 689                         cur.innerText()->dispatch(cur, cmd);
 690                 }
 691                 break;
 692
 693         case LFUN_ESCAPE:
 694                 if (cur.selection())
 695                         cur.clearSelection();
 696                 else  {
 697                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 698                         cur.undispatched();
 699                 }
 700                 break;
 701
 702         case LFUN_INSET_TOGGLE:
 703                 recordUndo(cur);
 704                 lock(!lock());
 705                 cur.popRight();
 706                 break;
 707
 708         case LFUN_SELF_INSERT:
 709                 if (cmd.argument().size() != 1) {
 710                         recordUndo(cur);
 711                         docstring const arg = cmd.argument();
 712                         if (!interpretString(cur, arg))
 713                                 cur.insert(arg);
 714                         break;
 715                 }
 716                 // Don't record undo steps if we are in macro mode and
 717                 // cmd.argument is the next character of the macro name.
 718                 // Otherwise we'll get an invalid cursor if we undo after
 719                 // the macro was finished and the macro is a known command,
 720                 // e.g. sqrt. Cursor::macroModeClose replaces in this case
 721                 // the InsetMathUnknown with name "frac" by an empty
 722                 // InsetMathFrac -> a pos value > 0 is invalid.
 723                 // A side effect is that an undo before the macro is finished
 724                 // undoes the complete macro, not only the last character.
 725                 if (!cur.inMacroMode())
 726                         recordUndo(cur);
 727
 728                 // spacial handling of space. If we insert an inset
 729                 // via macro mode, we want to put the cursor inside it
 730                 // if relevant. Think typing "\frac<space>".
 731                 if (cmd.argument()[0] == ' '
 732                     && cur.inMacroMode() && cur.macroName() != "\\"
 733                     && cur.macroModeClose()) {
 734                         MathAtom const atom = cur.prevAtom();
 735                         if (atom->asNestInset() && atom->nargs() > 0) {
 736                                 cur.posLeft();
 737                                 cur.pushLeft(*cur.nextInset());
 738                         }
 739                 } else if (!interpretChar(cur, cmd.argument()[0])) {
 740                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 741                         cur.undispatched();
 742                 }
 743                 break;
 744
 745         //case LFUN_SERVER_GET_XY:
 746         //      sprintf(dispatch_buffer, "%d %d",);
 747         //      break;
 748
 749         case LFUN_SERVER_SET_XY: {
 750                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 751                 int x = 0;
 752                 int y = 0;
 753                 istringstream is(to_utf8(cmd.argument()));
 754                 is >> x >> y;
 755                 cur.setScreenPos(x, y);
 756                 break;
 757         }
 758
 759         // Special casing for superscript in case of LyX handling
 760         // dead-keys:
 761         case LFUN_ACCENT_CIRCUMFLEX:
 762                 if (cmd.argument().empty()) {
 763                         // do superscript if LyX handles
 764                         // deadkeys
 765                         recordUndo(cur, Undo::ATOMIC);
 766                         script(cur, true, grabAndEraseSelection(cur));
 767                 }
 768                 break;
 769
 770         case LFUN_ACCENT_UMLAUT:
 771         case LFUN_ACCENT_ACUTE:
 772         case LFUN_ACCENT_GRAVE:
 773         case LFUN_ACCENT_BREVE:
 774         case LFUN_ACCENT_DOT:
 775         case LFUN_ACCENT_MACRON:
 776         case LFUN_ACCENT_CARON:
 777         case LFUN_ACCENT_TILDE:
 778         case LFUN_ACCENT_CEDILLA:
 779         case LFUN_ACCENT_CIRCLE:
 780         case LFUN_ACCENT_UNDERDOT:
 781         case LFUN_ACCENT_TIE:
 782         case LFUN_ACCENT_OGONEK:
 783         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 784                 break;
 785
 786         //  Math fonts
 787         case LFUN_FONT_FREE_APPLY:
 788         case LFUN_FONT_FREE_UPDATE:
 789                 handleFont2(cur, cmd.argument());
 790                 break;
 791
 792         case LFUN_FONT_BOLD:
 793                 if (currentMode() == TEXT_MODE)
 794                         handleFont(cur, cmd.argument(), "textbf");
 795                 else
 796                         handleFont(cur, cmd.argument(), "mathbf");
 797                 break;
 798         case LFUN_FONT_SANS:
 799                 if (currentMode() == TEXT_MODE)
 800                         handleFont(cur, cmd.argument(), "textsf");
 801                 else
 802                         handleFont(cur, cmd.argument(), "mathsf");
 803                 break;
 804         case LFUN_FONT_EMPH:
 805                 if (currentMode() == TEXT_MODE)
 806                         handleFont(cur, cmd.argument(), "emph");
 807                 else
 808                         handleFont(cur, cmd.argument(), "mathcal");
 809                 break;
 810         case LFUN_FONT_ROMAN:
 811                 if (currentMode() == TEXT_MODE)
 812                         handleFont(cur, cmd.argument(), "textrm");
 813                 else
 814                         handleFont(cur, cmd.argument(), "mathrm");
 815                 break;
 816         case LFUN_FONT_CODE:
 817                 if (currentMode() == TEXT_MODE)
 818                         handleFont(cur, cmd.argument(), "texttt");
 819                 else
 820                         handleFont(cur, cmd.argument(), "mathtt");
 821                 break;
 822         case LFUN_FONT_FRAK:
 823                 handleFont(cur, cmd.argument(), "mathfrak");
 824                 break;
 825         case LFUN_FONT_ITAL:
 826                 if (currentMode() == TEXT_MODE)
 827                         handleFont(cur, cmd.argument(), "textit");
 828                 else
 829                         handleFont(cur, cmd.argument(), "mathit");
 830                 break;
 831         case LFUN_FONT_NOUN:
 832                 if (currentMode() == TEXT_MODE)
 833                         // FIXME: should be "noun"
 834                         handleFont(cur, cmd.argument(), "textsc");
 835                 else
 836                         handleFont(cur, cmd.argument(), "mathbb");
 837                 break;
 838         /*
 839         case LFUN_FONT_FREE_APPLY:
 840                 handleFont(cur, cmd.argument(), "textrm");
 841                 break;
 842         */
 843         case LFUN_FONT_DEFAULT:
 844                 handleFont(cur, cmd.argument(), "textnormal");
 845                 break;
 846
 847         case LFUN_MATH_MODE: {
 848 #if 1
 849                 // ignore math-mode on when already in math mode
 850                 if (currentMode() == Inset::MATH_MODE && cmd.argument() == "on")
 851                         break;
 852                 cur.macroModeClose();
 853                 docstring const save_selection = grabAndEraseSelection(cur);
 854                 selClearOrDel(cur);
 855                 //cur.plainInsert(MathAtom(new InsetMathMBox(cur.bv())));
 856                 cur.plainInsert(MathAtom(new InsetMathBox(from_ascii("mbox"))));
 857                 cur.posLeft();
 858                 cur.pushLeft(*cur.nextInset());
 859                 cur.niceInsert(save_selection);
 860 #else
 861                 if (currentMode() == Inset::TEXT_MODE) {
 862                         cur.niceInsert(MathAtom(new InsetMathHull("simple")));
 863                         cur.message(_("create new math text environment ($...$)"));
 864                 } else {
 865                         handleFont(cur, cmd.argument(), "textrm");
 866                         cur.message(_("entered math text mode (textrm)"));
 867                 }
 868 #endif
 869                 break;
 870         }
 871
 872         case LFUN_MATH_SIZE:
 873 #if 0
 874                 recordUndo(cur);
 875                 cur.setSize(arg);
 876 #endif
 877                 break;
 878
 879         case LFUN_MATH_MATRIX: {
 880                 recordUndo(cur, Undo::ATOMIC);
 881                 unsigned int m = 1;
 882                 unsigned int n = 1;
 883                 docstring v_align;
 884                 docstring h_align;
 885                 idocstringstream is(cmd.argument());
 886                 is >> m >> n >> v_align >> h_align;
 887                 if (m < 1)
 888                         m = 1;
 889                 if (n < 1)
 890                         n = 1;
 891                 v_align += 'c';
 892                 cur.niceInsert(
 893                         MathAtom(new InsetMathArray(from_ascii("array"), m, n, (char)v_align[0], h_align)));
 894                 break;
 895         }
 896
 897         case LFUN_MATH_DELIM: {
 898                 docstring ls;
 899                 docstring rs = support::split(cmd.argument(), ls, ' ');
 900                 // Reasonable default values
 901                 if (ls.empty())
 902                         ls = '(';
 903                 if (rs.empty())
 904                         rs = ')';
 905                 recordUndo(cur, Undo::ATOMIC);
 906                 cur.handleNest(MathAtom(new InsetMathDelim(ls, rs)));
 907                 break;
 908         }
 909
 910         case LFUN_MATH_BIGDELIM: {
 911                 docstring const lname  = from_utf8(cmd.getArg(0));
 912                 docstring const ldelim = from_utf8(cmd.getArg(1));
 913                 docstring const rname  = from_utf8(cmd.getArg(2));
 914                 docstring const rdelim = from_utf8(cmd.getArg(3));
 915                 latexkeys const * l = in_word_set(lname);
 916                 bool const have_l = l && l->inset == "big" &&
 917                                     InsetMathBig::isBigInsetDelim(ldelim);
 918                 l = in_word_set(rname);
 919                 bool const have_r = l && l->inset == "big" &&
 920                                     InsetMathBig::isBigInsetDelim(rdelim);
 921                 // We mimic LFUN_MATH_DELIM in case we have an empty left
 922                 // or right delimiter.
 923                 if (have_l || have_r) {
 924                         recordUndo(cur, Undo::ATOMIC);
 925                         docstring const selection = grabAndEraseSelection(cur);
 926                         selClearOrDel(cur);
 927                         if (have_l)
 928                                 cur.insert(MathAtom(new InsetMathBig(lname,
 929                                                                 ldelim)));
 930                         cur.niceInsert(selection);
 931                         if (have_r)
 932                                 cur.insert(MathAtom(new InsetMathBig(rname,
 933                                                                 rdelim)));
 934                 }
 935                 // Don't call cur.undispatched() if we did nothing, this would
 936                 // lead to infinite recursion via Text::dispatch().
 937                 break;
 938         }
 939
 940         case LFUN_SPACE_INSERT:
 941         case LFUN_MATH_SPACE:
 942                 recordUndo(cur, Undo::ATOMIC);
 943                 cur.insert(MathAtom(new InsetMathSpace(from_ascii(","))));
 944                 break;
 945
 946         case LFUN_ERT_INSERT:
 947                 // interpret this as if a backslash was typed
 948                 recordUndo(cur, Undo::ATOMIC);
 949                 interpretChar(cur, '\\');
 950                 break;
 951
 952         case LFUN_MATH_SUBSCRIPT:
 953                 // interpret this as if a _ was typed
 954                 recordUndo(cur, Undo::ATOMIC);
 955                 interpretChar(cur, '_');
 956                 break;
 957
 958         case LFUN_MATH_SUPERSCRIPT:
 959                 // interpret this as if a ^ was typed
 960                 recordUndo(cur, Undo::ATOMIC);
 961                 interpretChar(cur, '^');
 962                 break;
 963
 964         case LFUN_QUOTE_INSERT:
 965                 // interpret this as if a straight " was typed
 966                 recordUndo(cur, Undo::ATOMIC);
 967                 interpretChar(cur, '\"');
 968                 break;
 969
 970 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
 971 // handling such that "self-insert" works on "arbitrary stuff" too, and
 972 // math-insert only handles special math things like "matrix".
 973         case LFUN_MATH_INSERT: {
 974                 recordUndo(cur, Undo::ATOMIC);
 975                 if (cmd.argument() == "^" || cmd.argument() == "_") {
 976                         interpretChar(cur, cmd.argument()[0]);
 977                 } else
 978                         cur.niceInsert(cmd.argument());
 979                 break;
 980                 }
 981
 982         case LFUN_DIALOG_SHOW_NEW_INSET: {
 983                 docstring const & name = cmd.argument();
 984                 string data;
 985                 if (name == "ref") {
 986                         InsetMathRef tmp(name);
 987                         data = tmp.createDialogStr(to_utf8(name));
 988                 }
 989                 cur.bv().showInsetDialog(to_utf8(name), data, 0);
 990                 break;
 991         }
 992
 993         case LFUN_INSET_INSERT: {
 994                 MathData ar;
 995                 if (createInsetMath_fromDialogStr(cmd.argument(), ar)) {
 996                         recordUndo(cur);
 997                         cur.insert(ar);
 998                 } else
 999                         cur.undispatched();
1000                 break;
1001         }
1002
1003         default:
1004                 InsetMath::doDispatch(cur, cmd);
1005                 break;
1006         }
1007 }
1008
1009
1010 bool InsetMathNest::getStatus(Cursor & cur, FuncRequest const & cmd,
1011                 FuncStatus & flag) const
1012 {
1013         // the font related toggles
1014         //string tc = "mathnormal";
1015         bool ret = true;
1016         string const arg = to_utf8(cmd.argument());
1017         switch (cmd.action) {
1018         case LFUN_TABULAR_FEATURE:
1019                 flag.enabled(false);
1020                 break;
1021 #if 0
1022         case LFUN_TABULAR_FEATURE:
1023                 // FIXME: check temporarily disabled
1024                 // valign code
1025                 char align = mathcursor::valign();
1026                 if (align == '\0') {
1027                         enable = false;
1028                         break;
1029                 }
1030                 if (cmd.argument().empty()) {
1031                         flag.clear();
1032                         break;
1033                 }
1034                 if (!contains("tcb", cmd.argument()[0])) {
1035                         enable = false;
1036                         break;
1037                 }
1038                 flag.setOnOff(cmd.argument()[0] == align);
1039                 break;
1040 #endif
1041         /// We have to handle them since 1.4 blocks all unhandled actions
1042         case LFUN_FONT_ITAL:
1043         case LFUN_FONT_BOLD:
1044         case LFUN_FONT_SANS:
1045         case LFUN_FONT_EMPH:
1046         case LFUN_FONT_CODE:
1047         case LFUN_FONT_NOUN:
1048         case LFUN_FONT_ROMAN:
1049         case LFUN_FONT_DEFAULT:
1050                 flag.enabled(true);
1051                 break;
1052         case LFUN_MATH_MUTATE:
1053                 //flag.setOnOff(mathcursor::formula()->hullType() == to_utf8(cmd.argument()));
1054                 flag.setOnOff(false);
1055                 break;
1056
1057         // we just need to be in math mode to enable that
1058         case LFUN_MATH_SIZE:
1059         case LFUN_MATH_SPACE:
1060         case LFUN_MATH_LIMITS:
1061         case LFUN_MATH_NONUMBER:
1062         case LFUN_MATH_NUMBER:
1063         case LFUN_MATH_EXTERN:
1064                 flag.enabled(true);
1065                 break;
1066
1067         case LFUN_FONT_FRAK:
1068                 flag.enabled(currentMode() != TEXT_MODE);
1069                 break;
1070
1071         case LFUN_MATH_INSERT: {
1072                 bool const textarg =
1073                         arg == "\\textbf"   || arg == "\\textsf" ||
1074                         arg == "\\textrm"   || arg == "\\textmd" ||
1075                         arg == "\\textit"   || arg == "\\textsc" ||
1076                         arg == "\\textsl"   || arg == "\\textup" ||
1077                         arg == "\\texttt"   || arg == "\\textbb" ||
1078                         arg == "\\textnormal";
1079                 flag.enabled(currentMode() != TEXT_MODE || textarg);
1080                 break;
1081         }
1082
1083         case LFUN_MATH_MATRIX:
1084                 flag.enabled(currentMode() == MATH_MODE);
1085                 break;
1086
1087         case LFUN_INSET_INSERT: {
1088                 // Don't test createMathInset_fromDialogStr(), since
1089                 // getStatus is not called with a valid reference and the
1090                 // dialog would not be applyable.
1091                 string const name = cmd.getArg(0);
1092                 flag.enabled(name == "ref");
1093                 break;
1094         }
1095
1096         case LFUN_MATH_DELIM:
1097         case LFUN_MATH_BIGDELIM:
1098                 // Don't do this with multi-cell selections
1099                 flag.enabled(cur.selBegin().idx() == cur.selEnd().idx());
1100                 break;
1101
1102         case LFUN_HYPHENATION_POINT_INSERT:
1103         case LFUN_LIGATURE_BREAK_INSERT:
1104         case LFUN_MENU_SEPARATOR_INSERT:
1105         case LFUN_DOTS_INSERT:
1106         case LFUN_END_OF_SENTENCE_PERIOD_INSERT:
1107                 // FIXME: These would probably make sense in math-text mode
1108                 flag.enabled(false);
1109                 break;
1110
1111         default:
1112                 ret = false;
1113                 break;
1114         }
1115         return ret;
1116 }
1117
1118
1119 void InsetMathNest::edit(Cursor & cur, bool left)
1120 {
1121         cur.push(*this);
1122         cur.idx() = left ? 0 : cur.lastidx();
1123         cur.pos() = left ? 0 : cur.lastpos();
1124         cur.resetAnchor();
1125         //lyxerr << "InsetMathNest::edit, cur:\n" << cur << endl;
1126 }
1127
1128
1129 Inset * InsetMathNest::editXY(Cursor & cur, int x, int y)
1130 {
1131         int idx_min = 0;
1132         int dist_min = 1000000;
1133         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1134                 int const d = cell(i).dist(cur.bv(), x, y);
1135                 if (d < dist_min) {
1136                         dist_min = d;
1137                         idx_min = i;
1138                 }
1139         }
1140         MathData & ar = cell(idx_min);
1141         cur.push(*this);
1142         cur.idx() = idx_min;
1143         cur.pos() = ar.x2pos(x - ar.xo(cur.bv()));
1144
1145         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1146         if (dist_min == 0) {
1147                 // hit inside cell
1148                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1149                         if (ar[i]->covers(cur.bv(), x, y))
1150                                 return ar[i].nucleus()->editXY(cur, x, y);
1151         }
1152         return this;
1153 }
1154
1155
1156 void InsetMathNest::lfunMousePress(Cursor & cur, FuncRequest & cmd)
1157 {
1158         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1159         BufferView & bv = cur.bv();
1160         if (cmd.button() == mouse_button::button1) {
1161                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1162                 bv.mouseSetCursor(cur);
1163                 // Update the cursor update flags as needed:
1164                 //
1165                 // Update::Decoration: tells to update the decoration (visual box
1166                 //                     corners that define the inset)/
1167                 // Update::FitCursor: adjust the screen to the cursor position if
1168                 //                    needed
1169                 // cur.result().update(): don't overwrite previously set flags.
1170                 cur.updateFlags(Update::Decoration | Update::FitCursor | cur.result().update());
1171         } else if (cmd.button() == mouse_button::button2) {
1172                 MathData ar;
1173                 if (cap::selection()) {
1174                         // See comment in Text::dispatch why we do this
1175                         cap::copySelectionToStack();
1176                         cmd = FuncRequest(LFUN_PASTE, "0");
1177                         doDispatch(cur, cmd);
1178                 } else
1179                         asArray(theSelection().get(), ar);
1180
1181                 cur.insert(ar);
1182                 bv.mouseSetCursor(cur);
1183         }
1184 }
1185
1186
1187 void InsetMathNest::lfunMouseMotion(Cursor & cur, FuncRequest & cmd)
1188 {
1189         // only select with button 1
1190         if (cmd.button() == mouse_button::button1) {
1191                 Cursor & bvcur = cur.bv().cursor();
1192                 if (bvcur.anchor_.hasPart(cur)) {
1193                         //lyxerr << "## lfunMouseMotion: cursor: " << cur << endl;
1194                         bvcur.setCursor(cur);
1195                         bvcur.selection() = true;
1196                         //lyxerr << "MOTION " << bvcur << endl;
1197                 } else
1198                         cur.undispatched();
1199         }
1200 }
1201
1202
1203 void InsetMathNest::lfunMouseRelease(Cursor & cur, FuncRequest & cmd)
1204 {
1205         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1206
1207         if (cmd.button() == mouse_button::button1) {
1208                 if (!cur.selection())
1209                         cur.noUpdate();
1210                 else {
1211                         Cursor & bvcur = cur.bv().cursor();
1212                         bvcur.selection() = true;
1213                         cap::saveSelection(bvcur);
1214                 }
1215                 return;
1216         }
1217
1218         cur.undispatched();
1219 }
1220
1221
1222 bool InsetMathNest::interpretChar(Cursor & cur, char_type c)
1223 {
1224         //lyxerr << "interpret 2: '" << c << "'" << endl;
1225         docstring save_selection;
1226         if (c == '^' || c == '_')
1227                 save_selection = grabAndEraseSelection(cur);
1228
1229         cur.clearTargetX();
1230
1231         // handle macroMode
1232         if (cur.inMacroMode()) {
1233                 docstring name = cur.macroName();
1234
1235                 /// are we currently typing '#1' or '#2' or...?
1236                 if (name == "\\#") {
1237                         cur.backspace();
1238                         int n = c - '0';
1239                         if (n >= 1 && n <= 9)
1240                                 cur.insert(new MathMacroArgument(n));
1241                         return true;
1242                 }
1243
1244                 if (isAlphaASCII(c)) {
1245                         cur.activeMacro()->setName(name + docstring(1, c));
1246                         return true;
1247                 }
1248
1249                 // handle 'special char' macros
1250                 if (name == "\\") {
1251                         // remove the '\\'
1252                         if (c == '\\') {
1253                                 cur.backspace();
1254                                 if (currentMode() == InsetMath::TEXT_MODE)
1255                                         cur.niceInsert(createInsetMath("textbackslash"));
1256                                 else
1257                                         cur.niceInsert(createInsetMath("backslash"));
1258                         } else if (c == '{') {
1259                                 cur.backspace();
1260                                 cur.niceInsert(MathAtom(new InsetMathBrace));
1261                         } else if (c == '%') {
1262                                 cur.backspace();
1263                                 cur.niceInsert(MathAtom(new InsetMathComment));
1264                         } else if (c == '#') {
1265                                 BOOST_ASSERT(cur.activeMacro());
1266                                 cur.activeMacro()->setName(name + docstring(1, c));
1267                         } else {
1268                                 cur.backspace();
1269                                 cur.niceInsert(createInsetMath(docstring(1, c)));
1270                         }
1271                         return true;
1272                 }
1273
1274                 // One character big delimiters. The others are handled in
1275                 // interpretString().
1276                 latexkeys const * l = in_word_set(name.substr(1));
1277                 if (name[0] == '\\' && l && l->inset == "big") {
1278                         docstring delim;
1279                         switch (c) {
1280                         case '{':
1281                                 delim = from_ascii("\\{");
1282                                 break;
1283                         case '}':
1284                                 delim = from_ascii("\\}");
1285                                 break;
1286                         default:
1287                                 delim = docstring(1, c);
1288                                 break;
1289                         }
1290                         if (InsetMathBig::isBigInsetDelim(delim)) {
1291                                 // name + delim ared a valid InsetMathBig.
1292                                 // We can't use cur.macroModeClose() because
1293                                 // it does not handle delim.
1294                                 InsetMathUnknown * p = cur.activeMacro();
1295                                 p->finalize();
1296                                 --cur.pos();
1297                                 cur.cell().erase(cur.pos());
1298                                 cur.plainInsert(MathAtom(
1299                                         new InsetMathBig(name.substr(1), delim)));
1300                                 return true;
1301                         }
1302                 }
1303
1304                 // leave macro mode and try again if necessary
1305                 cur.macroModeClose();
1306                 if (c == '{')
1307                         cur.niceInsert(MathAtom(new InsetMathBrace));
1308                 else if (c != ' ')
1309                         interpretChar(cur, c);
1310                 return true;
1311         }
1312
1313         // This is annoying as one has to press <space> far too often.
1314         // Disable it.
1315
1316 #if 0
1317                 // leave autocorrect mode if necessary
1318                 if (autocorrect() && c == ' ') {
1319                         autocorrect() = false;
1320                         return true;
1321                 }
1322 #endif
1323
1324         // just clear selection on pressing the space bar
1325         if (cur.selection() && c == ' ') {
1326                 cur.selection() = false;
1327                 return true;
1328         }
1329
1330         selClearOrDel(cur);
1331
1332         if (c == '\\') {
1333                 //lyxerr << "starting with macro" << endl;
1334                 cur.insert(MathAtom(new InsetMathUnknown(from_ascii("\\"), false)));
1335                 return true;
1336         }
1337
1338         if (c == '\n') {
1339                 if (currentMode() == InsetMath::TEXT_MODE)
1340                         cur.insert(c);
1341                 return true;
1342         }
1343
1344         if (c == ' ') {
1345                 if (currentMode() == InsetMath::TEXT_MODE) {
1346                         // insert spaces in text mode,
1347                         // but suppress direct insertion of two spaces in a row
1348                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1349                         // it is better than nothing...
1350                         if (!cur.pos() != 0 || cur.prevAtom()->getChar() != ' ') {
1351                                 cur.insert(c);
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                         }
1358                         return true;
1359                 }
1360                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1361                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1362                         // FIXME: we have to enable full redraw here because of the
1363                         // visual box corners that define the inset. If we know for
1364                         // sure that we stay within the same cell we can optimize for
1365                         // that using:
1366                         //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1367                         return true;
1368                 }
1369
1370                 if (cur.popRight()) {
1371                         // FIXME: we have to enable full redraw here because of the
1372                         // visual box corners that define the inset. If we know for
1373                         // sure that we stay within the same cell we can optimize for
1374                         // that using:
1375                         //cur.updateFlags(Update::FitCursor);
1376                         return true;
1377                 }
1378
1379                 // if we are at the very end, leave the formula
1380                 return cur.pos() != cur.lastpos();
1381         }
1382
1383         // These shouldn't work in text mode:
1384         if (currentMode() != InsetMath::TEXT_MODE) {
1385                 if (c == '_') {
1386                         script(cur, false, save_selection);
1387                         return true;
1388                 }
1389                 if (c == '^') {
1390                         script(cur, true, save_selection);
1391                         return true;
1392                 }
1393                 if (c == '~') {
1394                         cur.niceInsert(createInsetMath("sim"));
1395                         return true;
1396                 }
1397         }
1398
1399         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1400             c == '%' || c == '_' || c == '^') {
1401                 cur.niceInsert(createInsetMath(docstring(1, c)));
1402                 return true;
1403         }
1404
1405
1406         // try auto-correction
1407         //if (autocorrect() && hasPrevAtom() && math_autocorrect(prevAtom(), c))
1408         //      return true;
1409
1410         // no special circumstances, so insert the character without any fuss
1411         cur.insert(c);
1412         cur.autocorrect() = true;
1413         return true;
1414 }
1415
1416
1417 bool InsetMathNest::interpretString(Cursor & cur, docstring const & str)
1418 {
1419         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1420         // possible
1421         if (!cur.empty() && cur.pos() > 0 &&
1422             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1423                 if (InsetMathBig::isBigInsetDelim(str)) {
1424                         docstring prev = asString(cur.cell()[cur.pos() - 1]);
1425                         if (prev[0] == '\\') {
1426                                 prev = prev.substr(1);
1427                                 latexkeys const * l = in_word_set(prev);
1428                                 if (l && l->inset == "big") {
1429                                         cur.cell()[cur.pos() - 1] =
1430                                                 MathAtom(new InsetMathBig(prev, str));
1431                                         return true;
1432                                 }
1433                         }
1434                 }
1435         }
1436         return false;
1437 }
1438
1439
1440 bool InsetMathNest::script(Cursor & cur, bool up,
1441                 docstring const & save_selection)
1442 {
1443         // Hack to get \^ and \_ working
1444         //lyxerr << "handling script: up: " << up << endl;
1445         if (cur.inMacroMode() && cur.macroName() == "\\") {
1446                 if (up)
1447                         cur.niceInsert(createInsetMath("mathcircumflex"));
1448                 else
1449                         interpretChar(cur, '_');
1450                 return true;
1451         }
1452
1453         cur.macroModeClose();
1454         if (asScriptInset() && cur.idx() == 0) {
1455                 // we are in a nucleus of a script inset, move to _our_ script
1456                 InsetMathScript * inset = asScriptInset();
1457                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1458                 inset->ensure(up);
1459                 cur.idx() = inset->idxOfScript(up);
1460                 cur.pos() = 0;
1461         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1462                 --cur.pos();
1463                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1464                 cur.push(*inset);
1465                 inset->ensure(up);
1466                 cur.idx() = inset->idxOfScript(up);
1467                 cur.pos() = cur.lastpos();
1468         } else {
1469                 // convert the thing to our left to a scriptinset or create a new
1470                 // one if in the very first position of the array
1471                 if (cur.pos() == 0) {
1472                         //lyxerr << "new scriptinset" << endl;
1473                         cur.insert(new InsetMathScript(up));
1474                 } else {
1475                         //lyxerr << "converting prev atom " << endl;
1476                         cur.prevAtom() = MathAtom(new InsetMathScript(cur.prevAtom(), up));
1477                 }
1478                 --cur.pos();
1479                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1480                 // See comment in MathParser.cpp for special handling of {}-bases
1481
1482                 cur.push(*inset);
1483                 cur.idx() = 1;
1484                 cur.pos() = 0;
1485         }
1486         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1487         cur.niceInsert(save_selection);
1488         cur.resetAnchor();
1489         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1490         return true;
1491 }
1492
1493
1494 } // namespace lyx